select SYS_SUPPORTS_LITTLE_ENDIAN
select SYS_HAS_EARLY_PRINTK
select MIPS_MACHINE
+ select USB_ARCH_HAS_HCD
config RALINK_DEV_GPIO_BUTTONS
def_bool n
--- /dev/null
+config DWC_OTG
+ tristate "Ralink RT305X DWC_OTG support"
+ depends on SOC_RT305X
+ ---help---
+ This driver supports Ralink DWC_OTG
+
+choice
+ prompt "USB Operation Mode"
+ depends on DWC_OTG
+ default DWC_OTG_HOST_ONLY
+
+config DWC_OTG_HOST_ONLY
+ bool "HOST ONLY MODE"
+ depends on DWC_OTG
+
+config DWC_OTG_DEVICE_ONLY
+ bool "DEVICE ONLY MODE"
+ depends on DWC_OTG
+
+endchoice
+
+config DWC_OTG_DEBUG
+ bool "Enable debug mode"
+ depends on DWC_OTG
--- /dev/null
+#
+# Makefile for DWC_otg Highspeed USB controller driver
+#
+
+ifeq ($(CONFIG_DWC_OTG_DEBUG),y)
+EXTRA_CFLAGS += -DDEBUG
+endif
+
+# Use one of the following flags to compile the software in host-only or
+# device-only mode.
+ifeq ($(CONFIG_DWC_OTG_HOST_ONLY),y)
+EXTRA_CFLAGS += -DDWC_HOST_ONLY
+EXTRA_CFLAGS += -DDWC_EN_ISOC
+endif
+
+ifeq ($(CONFIG_DWC_OTG_DEVICE_ONLY),y)
+EXTRA_CFLAGS += -DDWC_DEVICE_ONLY
+endif
+
+obj-$(CONFIG_DWC_OTG) := dwc_otg.o
+
+dwc_otg-objs := dwc_otg_driver.o dwc_otg_attr.o
+dwc_otg-objs += dwc_otg_cil.o dwc_otg_cil_intr.o
+dwc_otg-objs += dwc_otg_pcd.o dwc_otg_pcd_intr.o
+dwc_otg-objs += dwc_otg_hcd.o dwc_otg_hcd_intr.o dwc_otg_hcd_queue.o
--- /dev/null
+/*
+ * zero.c -- Gadget Zero, for USB development
+ *
+ * Copyright (C) 2003-2004 David Brownell
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ * to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+/*
+ * Gadget Zero only needs two bulk endpoints, and is an example of how you
+ * can write a hardware-agnostic gadget driver running inside a USB device.
+ *
+ * Hardware details are visible (see CONFIG_USB_ZERO_* below) but don't
+ * affect most of the driver.
+ *
+ * Use it with the Linux host/master side "usbtest" driver to get a basic
+ * functional test of your device-side usb stack, or with "usb-skeleton".
+ *
+ * It supports two similar configurations. One sinks whatever the usb host
+ * writes, and in return sources zeroes. The other loops whatever the host
+ * writes back, so the host can read it. Module options include:
+ *
+ * buflen=N default N=4096, buffer size used
+ * qlen=N default N=32, how many buffers in the loopback queue
+ * loopdefault default false, list loopback config first
+ *
+ * Many drivers will only have one configuration, letting them be much
+ * simpler if they also don't support high speed operation (like this
+ * driver does).
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/uts.h>
+#include <linux/version.h>
+#include <linux/device.h>
+#include <linux/moduleparam.h>
+#include <linux/proc_fs.h>
+
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/unaligned.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
+# include <linux/usb/ch9.h>
+#else
+# include <linux/usb_ch9.h>
+#endif
+
+#include <linux/usb_gadget.h>
+
+
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*/
+
+
+static int utf8_to_utf16le(const char *s, u16 *cp, unsigned len)
+{
+ int count = 0;
+ u8 c;
+ u16 uchar;
+
+ /* this insists on correct encodings, though not minimal ones.
+ * BUT it currently rejects legit 4-byte UTF-8 code points,
+ * which need surrogate pairs. (Unicode 3.1 can use them.)
+ */
+ while (len != 0 && (c = (u8) *s++) != 0) {
+ if (unlikely(c & 0x80)) {
+ // 2-byte sequence:
+ // 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
+ if ((c & 0xe0) == 0xc0) {
+ uchar = (c & 0x1f) << 6;
+
+ c = (u8) *s++;
+ if ((c & 0xc0) != 0xc0)
+ goto fail;
+ c &= 0x3f;
+ uchar |= c;
+
+ // 3-byte sequence (most CJKV characters):
+ // zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
+ } else if ((c & 0xf0) == 0xe0) {
+ uchar = (c & 0x0f) << 12;
+
+ c = (u8) *s++;
+ if ((c & 0xc0) != 0xc0)
+ goto fail;
+ c &= 0x3f;
+ uchar |= c << 6;
+
+ c = (u8) *s++;
+ if ((c & 0xc0) != 0xc0)
+ goto fail;
+ c &= 0x3f;
+ uchar |= c;
+
+ /* no bogus surrogates */
+ if (0xd800 <= uchar && uchar <= 0xdfff)
+ goto fail;
+
+ // 4-byte sequence (surrogate pairs, currently rare):
+ // 11101110wwwwzzzzyy + 110111yyyyxxxxxx
+ // = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
+ // (uuuuu = wwww + 1)
+ // FIXME accept the surrogate code points (only)
+
+ } else
+ goto fail;
+ } else
+ uchar = c;
+ put_unaligned (cpu_to_le16 (uchar), cp++);
+ count++;
+ len--;
+ }
+ return count;
+fail:
+ return -1;
+}
+
+
+/**
+ * usb_gadget_get_string - fill out a string descriptor
+ * @table: of c strings encoded using UTF-8
+ * @id: string id, from low byte of wValue in get string descriptor
+ * @buf: at least 256 bytes
+ *
+ * Finds the UTF-8 string matching the ID, and converts it into a
+ * string descriptor in utf16-le.
+ * Returns length of descriptor (always even) or negative errno
+ *
+ * If your driver needs stings in multiple languages, you'll probably
+ * "switch (wIndex) { ... }" in your ep0 string descriptor logic,
+ * using this routine after choosing which set of UTF-8 strings to use.
+ * Note that US-ASCII is a strict subset of UTF-8; any string bytes with
+ * the eighth bit set will be multibyte UTF-8 characters, not ISO-8859/1
+ * characters (which are also widely used in C strings).
+ */
+int
+usb_gadget_get_string (struct usb_gadget_strings *table, int id, u8 *buf)
+{
+ struct usb_string *s;
+ int len;
+
+ /* descriptor 0 has the language id */
+ if (id == 0) {
+ buf [0] = 4;
+ buf [1] = USB_DT_STRING;
+ buf [2] = (u8) table->language;
+ buf [3] = (u8) (table->language >> 8);
+ return 4;
+ }
+ for (s = table->strings; s && s->s; s++)
+ if (s->id == id)
+ break;
+
+ /* unrecognized: stall. */
+ if (!s || !s->s)
+ return -EINVAL;
+
+ /* string descriptors have length, tag, then UTF16-LE text */
+ len = min ((size_t) 126, strlen (s->s));
+ memset (buf + 2, 0, 2 * len); /* zero all the bytes */
+ len = utf8_to_utf16le(s->s, (u16 *)&buf[2], len);
+ if (len < 0)
+ return -EINVAL;
+ buf [0] = (len + 1) * 2;
+ buf [1] = USB_DT_STRING;
+ return buf [0];
+}
+
+
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*/
+
+
+/**
+ * usb_descriptor_fillbuf - fill buffer with descriptors
+ * @buf: Buffer to be filled
+ * @buflen: Size of buf
+ * @src: Array of descriptor pointers, terminated by null pointer.
+ *
+ * Copies descriptors into the buffer, returning the length or a
+ * negative error code if they can't all be copied. Useful when
+ * assembling descriptors for an associated set of interfaces used
+ * as part of configuring a composite device; or in other cases where
+ * sets of descriptors need to be marshaled.
+ */
+int
+usb_descriptor_fillbuf(void *buf, unsigned buflen,
+ const struct usb_descriptor_header **src)
+{
+ u8 *dest = buf;
+
+ if (!src)
+ return -EINVAL;
+
+ /* fill buffer from src[] until null descriptor ptr */
+ for (; 0 != *src; src++) {
+ unsigned len = (*src)->bLength;
+
+ if (len > buflen)
+ return -EINVAL;
+ memcpy(dest, *src, len);
+ buflen -= len;
+ dest += len;
+ }
+ return dest - (u8 *)buf;
+}
+
+
+/**
+ * usb_gadget_config_buf - builts a complete configuration descriptor
+ * @config: Header for the descriptor, including characteristics such
+ * as power requirements and number of interfaces.
+ * @desc: Null-terminated vector of pointers to the descriptors (interface,
+ * endpoint, etc) defining all functions in this device configuration.
+ * @buf: Buffer for the resulting configuration descriptor.
+ * @length: Length of buffer. If this is not big enough to hold the
+ * entire configuration descriptor, an error code will be returned.
+ *
+ * This copies descriptors into the response buffer, building a descriptor
+ * for that configuration. It returns the buffer length or a negative
+ * status code. The config.wTotalLength field is set to match the length
+ * of the result, but other descriptor fields (including power usage and
+ * interface count) must be set by the caller.
+ *
+ * Gadget drivers could use this when constructing a config descriptor
+ * in response to USB_REQ_GET_DESCRIPTOR. They will need to patch the
+ * resulting bDescriptorType value if USB_DT_OTHER_SPEED_CONFIG is needed.
+ */
+int usb_gadget_config_buf(
+ const struct usb_config_descriptor *config,
+ void *buf,
+ unsigned length,
+ const struct usb_descriptor_header **desc
+)
+{
+ struct usb_config_descriptor *cp = buf;
+ int len;
+
+ /* config descriptor first */
+ if (length < USB_DT_CONFIG_SIZE || !desc)
+ return -EINVAL;
+ *cp = *config;
+
+ /* then interface/endpoint/class/vendor/... */
+ len = usb_descriptor_fillbuf(USB_DT_CONFIG_SIZE + (u8*)buf,
+ length - USB_DT_CONFIG_SIZE, desc);
+ if (len < 0)
+ return len;
+ len += USB_DT_CONFIG_SIZE;
+ if (len > 0xffff)
+ return -EINVAL;
+
+ /* patch up the config descriptor */
+ cp->bLength = USB_DT_CONFIG_SIZE;
+ cp->bDescriptorType = USB_DT_CONFIG;
+ cp->wTotalLength = cpu_to_le16(len);
+ cp->bmAttributes |= USB_CONFIG_ATT_ONE;
+ return len;
+}
+
+/*-------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------*/
+
+
+#define RBUF_LEN (1024*1024)
+static int rbuf_start;
+static int rbuf_len;
+static __u8 rbuf[RBUF_LEN];
+
+/*-------------------------------------------------------------------------*/
+
+#define DRIVER_VERSION "St Patrick's Day 2004"
+
+static const char shortname [] = "zero";
+static const char longname [] = "YAMAHA YST-MS35D USB Speaker ";
+
+static const char source_sink [] = "source and sink data";
+static const char loopback [] = "loop input to output";
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * driver assumes self-powered hardware, and
+ * has no way for users to trigger remote wakeup.
+ *
+ * this version autoconfigures as much as possible,
+ * which is reasonable for most "bulk-only" drivers.
+ */
+static const char *EP_IN_NAME; /* source */
+static const char *EP_OUT_NAME; /* sink */
+
+/*-------------------------------------------------------------------------*/
+
+/* big enough to hold our biggest descriptor */
+#define USB_BUFSIZ 512
+
+struct zero_dev {
+ spinlock_t lock;
+ struct usb_gadget *gadget;
+ struct usb_request *req; /* for control responses */
+
+ /* when configured, we have one of two configs:
+ * - source data (in to host) and sink it (out from host)
+ * - or loop it back (out from host back in to host)
+ */
+ u8 config;
+ struct usb_ep *in_ep, *out_ep;
+
+ /* autoresume timer */
+ struct timer_list resume;
+};
+
+#define xprintk(d,level,fmt,args...) \
+ dev_printk(level , &(d)->gadget->dev , fmt , ## args)
+
+#ifdef DEBUG
+#define DBG(dev,fmt,args...) \
+ xprintk(dev , KERN_DEBUG , fmt , ## args)
+#else
+#define DBG(dev,fmt,args...) \
+ do { } while (0)
+#endif /* DEBUG */
+
+#ifdef VERBOSE
+#define VDBG DBG
+#else
+#define VDBG(dev,fmt,args...) \
+ do { } while (0)
+#endif /* VERBOSE */
+
+#define ERROR(dev,fmt,args...) \
+ xprintk(dev , KERN_ERR , fmt , ## args)
+#define WARN(dev,fmt,args...) \
+ xprintk(dev , KERN_WARNING , fmt , ## args)
+#define INFO(dev,fmt,args...) \
+ xprintk(dev , KERN_INFO , fmt , ## args)
+
+/*-------------------------------------------------------------------------*/
+
+static unsigned buflen = 4096;
+static unsigned qlen = 32;
+static unsigned pattern = 0;
+
+module_param (buflen, uint, S_IRUGO|S_IWUSR);
+module_param (qlen, uint, S_IRUGO|S_IWUSR);
+module_param (pattern, uint, S_IRUGO|S_IWUSR);
+
+/*
+ * if it's nonzero, autoresume says how many seconds to wait
+ * before trying to wake up the host after suspend.
+ */
+static unsigned autoresume = 0;
+module_param (autoresume, uint, 0);
+
+/*
+ * Normally the "loopback" configuration is second (index 1) so
+ * it's not the default. Here's where to change that order, to
+ * work better with hosts where config changes are problematic.
+ * Or controllers (like superh) that only support one config.
+ */
+static int loopdefault = 0;
+
+module_param (loopdefault, bool, S_IRUGO|S_IWUSR);
+
+/*-------------------------------------------------------------------------*/
+
+/* Thanks to NetChip Technologies for donating this product ID.
+ *
+ * DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!!
+ * Instead: allocate your own, using normal USB-IF procedures.
+ */
+#ifndef CONFIG_USB_ZERO_HNPTEST
+#define DRIVER_VENDOR_NUM 0x0525 /* NetChip */
+#define DRIVER_PRODUCT_NUM 0xa4a0 /* Linux-USB "Gadget Zero" */
+#else
+#define DRIVER_VENDOR_NUM 0x1a0a /* OTG test device IDs */
+#define DRIVER_PRODUCT_NUM 0xbadd
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * DESCRIPTORS ... most are static, but strings and (full)
+ * configuration descriptors are built on demand.
+ */
+
+/*
+#define STRING_MANUFACTURER 25
+#define STRING_PRODUCT 42
+#define STRING_SERIAL 101
+*/
+#define STRING_MANUFACTURER 1
+#define STRING_PRODUCT 2
+#define STRING_SERIAL 3
+
+#define STRING_SOURCE_SINK 250
+#define STRING_LOOPBACK 251
+
+/*
+ * This device advertises two configurations; these numbers work
+ * on a pxa250 as well as more flexible hardware.
+ */
+#define CONFIG_SOURCE_SINK 3
+#define CONFIG_LOOPBACK 2
+
+/*
+static struct usb_device_descriptor
+device_desc = {
+ .bLength = sizeof device_desc,
+ .bDescriptorType = USB_DT_DEVICE,
+
+ .bcdUSB = __constant_cpu_to_le16 (0x0200),
+ .bDeviceClass = USB_CLASS_VENDOR_SPEC,
+
+ .idVendor = __constant_cpu_to_le16 (DRIVER_VENDOR_NUM),
+ .idProduct = __constant_cpu_to_le16 (DRIVER_PRODUCT_NUM),
+ .iManufacturer = STRING_MANUFACTURER,
+ .iProduct = STRING_PRODUCT,
+ .iSerialNumber = STRING_SERIAL,
+ .bNumConfigurations = 2,
+};
+*/
+static struct usb_device_descriptor
+device_desc = {
+ .bLength = sizeof device_desc,
+ .bDescriptorType = USB_DT_DEVICE,
+ .bcdUSB = __constant_cpu_to_le16 (0x0100),
+ .bDeviceClass = USB_CLASS_PER_INTERFACE,
+ .bDeviceSubClass = 0,
+ .bDeviceProtocol = 0,
+ .bMaxPacketSize0 = 64,
+ .bcdDevice = __constant_cpu_to_le16 (0x0100),
+ .idVendor = __constant_cpu_to_le16 (0x0499),
+ .idProduct = __constant_cpu_to_le16 (0x3002),
+ .iManufacturer = STRING_MANUFACTURER,
+ .iProduct = STRING_PRODUCT,
+ .iSerialNumber = STRING_SERIAL,
+ .bNumConfigurations = 1,
+};
+
+static struct usb_config_descriptor
+z_config = {
+ .bLength = sizeof z_config,
+ .bDescriptorType = USB_DT_CONFIG,
+
+ /* compute wTotalLength on the fly */
+ .bNumInterfaces = 2,
+ .bConfigurationValue = 1,
+ .iConfiguration = 0,
+ .bmAttributes = 0x40,
+ .bMaxPower = 0, /* self-powered */
+};
+
+
+static struct usb_otg_descriptor
+otg_descriptor = {
+ .bLength = sizeof otg_descriptor,
+ .bDescriptorType = USB_DT_OTG,
+
+ .bmAttributes = USB_OTG_SRP,
+};
+
+/* one interface in each configuration */
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+
+/*
+ * usb 2.0 devices need to expose both high speed and full speed
+ * descriptors, unless they only run at full speed.
+ *
+ * that means alternate endpoint descriptors (bigger packets)
+ * and a "device qualifier" ... plus more construction options
+ * for the config descriptor.
+ */
+
+static struct usb_qualifier_descriptor
+dev_qualifier = {
+ .bLength = sizeof dev_qualifier,
+ .bDescriptorType = USB_DT_DEVICE_QUALIFIER,
+
+ .bcdUSB = __constant_cpu_to_le16 (0x0200),
+ .bDeviceClass = USB_CLASS_VENDOR_SPEC,
+
+ .bNumConfigurations = 2,
+};
+
+
+struct usb_cs_as_general_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __u8 bDescriptorSubType;
+ __u8 bTerminalLink;
+ __u8 bDelay;
+ __u16 wFormatTag;
+} __attribute__ ((packed));
+
+struct usb_cs_as_format_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __u8 bDescriptorSubType;
+ __u8 bFormatType;
+ __u8 bNrChannels;
+ __u8 bSubframeSize;
+ __u8 bBitResolution;
+ __u8 bSamfreqType;
+ __u8 tLowerSamFreq[3];
+ __u8 tUpperSamFreq[3];
+} __attribute__ ((packed));
+
+static const struct usb_interface_descriptor
+z_audio_control_if_desc = {
+ .bLength = sizeof z_audio_control_if_desc,
+ .bDescriptorType = USB_DT_INTERFACE,
+ .bInterfaceNumber = 0,
+ .bAlternateSetting = 0,
+ .bNumEndpoints = 0,
+ .bInterfaceClass = USB_CLASS_AUDIO,
+ .bInterfaceSubClass = 0x1,
+ .bInterfaceProtocol = 0,
+ .iInterface = 0,
+};
+
+static const struct usb_interface_descriptor
+z_audio_if_desc = {
+ .bLength = sizeof z_audio_if_desc,
+ .bDescriptorType = USB_DT_INTERFACE,
+ .bInterfaceNumber = 1,
+ .bAlternateSetting = 0,
+ .bNumEndpoints = 0,
+ .bInterfaceClass = USB_CLASS_AUDIO,
+ .bInterfaceSubClass = 0x2,
+ .bInterfaceProtocol = 0,
+ .iInterface = 0,
+};
+
+static const struct usb_interface_descriptor
+z_audio_if_desc2 = {
+ .bLength = sizeof z_audio_if_desc,
+ .bDescriptorType = USB_DT_INTERFACE,
+ .bInterfaceNumber = 1,
+ .bAlternateSetting = 1,
+ .bNumEndpoints = 1,
+ .bInterfaceClass = USB_CLASS_AUDIO,
+ .bInterfaceSubClass = 0x2,
+ .bInterfaceProtocol = 0,
+ .iInterface = 0,
+};
+
+static const struct usb_cs_as_general_descriptor
+z_audio_cs_as_if_desc = {
+ .bLength = 7,
+ .bDescriptorType = 0x24,
+
+ .bDescriptorSubType = 0x01,
+ .bTerminalLink = 0x01,
+ .bDelay = 0x0,
+ .wFormatTag = __constant_cpu_to_le16 (0x0001)
+};
+
+
+static const struct usb_cs_as_format_descriptor
+z_audio_cs_as_format_desc = {
+ .bLength = 0xe,
+ .bDescriptorType = 0x24,
+
+ .bDescriptorSubType = 2,
+ .bFormatType = 1,
+ .bNrChannels = 1,
+ .bSubframeSize = 1,
+ .bBitResolution = 8,
+ .bSamfreqType = 0,
+ .tLowerSamFreq = {0x7e, 0x13, 0x00},
+ .tUpperSamFreq = {0xe2, 0xd6, 0x00},
+};
+
+static const struct usb_endpoint_descriptor
+z_iso_ep = {
+ .bLength = 0x09,
+ .bDescriptorType = 0x05,
+ .bEndpointAddress = 0x04,
+ .bmAttributes = 0x09,
+ .wMaxPacketSize = 0x0038,
+ .bInterval = 0x01,
+ .bRefresh = 0x00,
+ .bSynchAddress = 0x00,
+};
+
+static char z_iso_ep2[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+// 9 bytes
+static char z_ac_interface_header_desc[] =
+{ 0x09, 0x24, 0x01, 0x00, 0x01, 0x2b, 0x00, 0x01, 0x01 };
+
+// 12 bytes
+static char z_0[] = {0x0c, 0x24, 0x02, 0x01, 0x01, 0x01, 0x00, 0x02,
+ 0x03, 0x00, 0x00, 0x00};
+// 13 bytes
+static char z_1[] = {0x0d, 0x24, 0x06, 0x02, 0x01, 0x02, 0x15, 0x00,
+ 0x02, 0x00, 0x02, 0x00, 0x00};
+// 9 bytes
+static char z_2[] = {0x09, 0x24, 0x03, 0x03, 0x01, 0x03, 0x00, 0x02,
+ 0x00};
+
+static char za_0[] = {0x09, 0x04, 0x01, 0x02, 0x01, 0x01, 0x02, 0x00,
+ 0x00};
+
+static char za_1[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_2[] = {0x0e, 0x24, 0x02, 0x01, 0x02, 0x01, 0x08, 0x00,
+ 0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_3[] = {0x09, 0x05, 0x04, 0x09, 0x70, 0x00, 0x01, 0x00,
+ 0x00};
+
+static char za_4[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+static char za_5[] = {0x09, 0x04, 0x01, 0x03, 0x01, 0x01, 0x02, 0x00,
+ 0x00};
+
+static char za_6[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_7[] = {0x0e, 0x24, 0x02, 0x01, 0x01, 0x02, 0x10, 0x00,
+ 0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_8[] = {0x09, 0x05, 0x04, 0x09, 0x70, 0x00, 0x01, 0x00,
+ 0x00};
+
+static char za_9[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+static char za_10[] = {0x09, 0x04, 0x01, 0x04, 0x01, 0x01, 0x02, 0x00,
+ 0x00};
+
+static char za_11[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_12[] = {0x0e, 0x24, 0x02, 0x01, 0x02, 0x02, 0x10, 0x00,
+ 0x73, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_13[] = {0x09, 0x05, 0x04, 0x09, 0xe0, 0x00, 0x01, 0x00,
+ 0x00};
+
+static char za_14[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+static char za_15[] = {0x09, 0x04, 0x01, 0x05, 0x01, 0x01, 0x02, 0x00,
+ 0x00};
+
+static char za_16[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_17[] = {0x0e, 0x24, 0x02, 0x01, 0x01, 0x03, 0x14, 0x00,
+ 0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_18[] = {0x09, 0x05, 0x04, 0x09, 0xa8, 0x00, 0x01, 0x00,
+ 0x00};
+
+static char za_19[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+static char za_20[] = {0x09, 0x04, 0x01, 0x06, 0x01, 0x01, 0x02, 0x00,
+ 0x00};
+
+static char za_21[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
+
+static char za_22[] = {0x0e, 0x24, 0x02, 0x01, 0x02, 0x03, 0x14, 0x00,
+ 0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
+
+static char za_23[] = {0x09, 0x05, 0x04, 0x09, 0x50, 0x01, 0x01, 0x00,
+ 0x00};
+
+static char za_24[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
+
+
+
+static const struct usb_descriptor_header *z_function [] = {
+ (struct usb_descriptor_header *) &z_audio_control_if_desc,
+ (struct usb_descriptor_header *) &z_ac_interface_header_desc,
+ (struct usb_descriptor_header *) &z_0,
+ (struct usb_descriptor_header *) &z_1,
+ (struct usb_descriptor_header *) &z_2,
+ (struct usb_descriptor_header *) &z_audio_if_desc,
+ (struct usb_descriptor_header *) &z_audio_if_desc2,
+ (struct usb_descriptor_header *) &z_audio_cs_as_if_desc,
+ (struct usb_descriptor_header *) &z_audio_cs_as_format_desc,
+ (struct usb_descriptor_header *) &z_iso_ep,
+ (struct usb_descriptor_header *) &z_iso_ep2,
+ (struct usb_descriptor_header *) &za_0,
+ (struct usb_descriptor_header *) &za_1,
+ (struct usb_descriptor_header *) &za_2,
+ (struct usb_descriptor_header *) &za_3,
+ (struct usb_descriptor_header *) &za_4,
+ (struct usb_descriptor_header *) &za_5,
+ (struct usb_descriptor_header *) &za_6,
+ (struct usb_descriptor_header *) &za_7,
+ (struct usb_descriptor_header *) &za_8,
+ (struct usb_descriptor_header *) &za_9,
+ (struct usb_descriptor_header *) &za_10,
+ (struct usb_descriptor_header *) &za_11,
+ (struct usb_descriptor_header *) &za_12,
+ (struct usb_descriptor_header *) &za_13,
+ (struct usb_descriptor_header *) &za_14,
+ (struct usb_descriptor_header *) &za_15,
+ (struct usb_descriptor_header *) &za_16,
+ (struct usb_descriptor_header *) &za_17,
+ (struct usb_descriptor_header *) &za_18,
+ (struct usb_descriptor_header *) &za_19,
+ (struct usb_descriptor_header *) &za_20,
+ (struct usb_descriptor_header *) &za_21,
+ (struct usb_descriptor_header *) &za_22,
+ (struct usb_descriptor_header *) &za_23,
+ (struct usb_descriptor_header *) &za_24,
+ NULL,
+};
+
+/* maxpacket and other transfer characteristics vary by speed. */
+#define ep_desc(g,hs,fs) (((g)->speed==USB_SPEED_HIGH)?(hs):(fs))
+
+#else
+
+/* if there's no high speed support, maxpacket doesn't change. */
+#define ep_desc(g,hs,fs) fs
+
+#endif /* !CONFIG_USB_GADGET_DUALSPEED */
+
+static char manufacturer [40];
+//static char serial [40];
+static char serial [] = "Ser 00 em";
+
+/* static strings, in UTF-8 */
+static struct usb_string strings [] = {
+ { STRING_MANUFACTURER, manufacturer, },
+ { STRING_PRODUCT, longname, },
+ { STRING_SERIAL, serial, },
+ { STRING_LOOPBACK, loopback, },
+ { STRING_SOURCE_SINK, source_sink, },
+ { } /* end of list */
+};
+
+static struct usb_gadget_strings stringtab = {
+ .language = 0x0409, /* en-us */
+ .strings = strings,
+};
+
+/*
+ * config descriptors are also handcrafted. these must agree with code
+ * that sets configurations, and with code managing interfaces and their
+ * altsettings. other complexity may come from:
+ *
+ * - high speed support, including "other speed config" rules
+ * - multiple configurations
+ * - interfaces with alternate settings
+ * - embedded class or vendor-specific descriptors
+ *
+ * this handles high speed, and has a second config that could as easily
+ * have been an alternate interface setting (on most hardware).
+ *
+ * NOTE: to demonstrate (and test) more USB capabilities, this driver
+ * should include an altsetting to test interrupt transfers, including
+ * high bandwidth modes at high speed. (Maybe work like Intel's test
+ * device?)
+ */
+static int
+config_buf (struct usb_gadget *gadget, u8 *buf, u8 type, unsigned index)
+{
+ int len;
+ const struct usb_descriptor_header **function;
+
+ function = z_function;
+ len = usb_gadget_config_buf (&z_config, buf, USB_BUFSIZ, function);
+ if (len < 0)
+ return len;
+ ((struct usb_config_descriptor *) buf)->bDescriptorType = type;
+ return len;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static struct usb_request *
+alloc_ep_req (struct usb_ep *ep, unsigned length)
+{
+ struct usb_request *req;
+
+ req = usb_ep_alloc_request (ep, GFP_ATOMIC);
+ if (req) {
+ req->length = length;
+ req->buf = usb_ep_alloc_buffer (ep, length,
+ &req->dma, GFP_ATOMIC);
+ if (!req->buf) {
+ usb_ep_free_request (ep, req);
+ req = NULL;
+ }
+ }
+ return req;
+}
+
+static void free_ep_req (struct usb_ep *ep, struct usb_request *req)
+{
+ if (req->buf)
+ usb_ep_free_buffer (ep, req->buf, req->dma, req->length);
+ usb_ep_free_request (ep, req);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* optionally require specific source/sink data patterns */
+
+static int
+check_read_data (
+ struct zero_dev *dev,
+ struct usb_ep *ep,
+ struct usb_request *req
+)
+{
+ unsigned i;
+ u8 *buf = req->buf;
+
+ for (i = 0; i < req->actual; i++, buf++) {
+ switch (pattern) {
+ /* all-zeroes has no synchronization issues */
+ case 0:
+ if (*buf == 0)
+ continue;
+ break;
+ /* mod63 stays in sync with short-terminated transfers,
+ * or otherwise when host and gadget agree on how large
+ * each usb transfer request should be. resync is done
+ * with set_interface or set_config.
+ */
+ case 1:
+ if (*buf == (u8)(i % 63))
+ continue;
+ break;
+ }
+ ERROR (dev, "bad OUT byte, buf [%d] = %d\n", i, *buf);
+ usb_ep_set_halt (ep);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void zero_reset_config (struct zero_dev *dev)
+{
+ if (dev->config == 0)
+ return;
+
+ DBG (dev, "reset config\n");
+
+ /* just disable endpoints, forcing completion of pending i/o.
+ * all our completion handlers free their requests in this case.
+ */
+ if (dev->in_ep) {
+ usb_ep_disable (dev->in_ep);
+ dev->in_ep = NULL;
+ }
+ if (dev->out_ep) {
+ usb_ep_disable (dev->out_ep);
+ dev->out_ep = NULL;
+ }
+ dev->config = 0;
+ del_timer (&dev->resume);
+}
+
+#define _write(f, buf, sz) (f->f_op->write(f, buf, sz, &f->f_pos))
+
+static void
+zero_isoc_complete (struct usb_ep *ep, struct usb_request *req)
+{
+ struct zero_dev *dev = ep->driver_data;
+ int status = req->status;
+ int i, j;
+
+ switch (status) {
+
+ case 0: /* normal completion? */
+ //printk ("\nzero ---------------> isoc normal completion %d bytes\n", req->actual);
+ for (i=0, j=rbuf_start; i<req->actual; i++) {
+ //printk ("%02x ", ((__u8*)req->buf)[i]);
+ rbuf[j] = ((__u8*)req->buf)[i];
+ j++;
+ if (j >= RBUF_LEN) j=0;
+ }
+ rbuf_start = j;
+ //printk ("\n\n");
+
+ if (rbuf_len < RBUF_LEN) {
+ rbuf_len += req->actual;
+ if (rbuf_len > RBUF_LEN) {
+ rbuf_len = RBUF_LEN;
+ }
+ }
+
+ break;
+
+ /* this endpoint is normally active while we're configured */
+ case -ECONNABORTED: /* hardware forced ep reset */
+ case -ECONNRESET: /* request dequeued */
+ case -ESHUTDOWN: /* disconnect from host */
+ VDBG (dev, "%s gone (%d), %d/%d\n", ep->name, status,
+ req->actual, req->length);
+ if (ep == dev->out_ep)
+ check_read_data (dev, ep, req);
+ free_ep_req (ep, req);
+ return;
+
+ case -EOVERFLOW: /* buffer overrun on read means that
+ * we didn't provide a big enough
+ * buffer.
+ */
+ default:
+#if 1
+ DBG (dev, "%s complete --> %d, %d/%d\n", ep->name,
+ status, req->actual, req->length);
+#endif
+ case -EREMOTEIO: /* short read */
+ break;
+ }
+
+ status = usb_ep_queue (ep, req, GFP_ATOMIC);
+ if (status) {
+ ERROR (dev, "kill %s: resubmit %d bytes --> %d\n",
+ ep->name, req->length, status);
+ usb_ep_set_halt (ep);
+ /* FIXME recover later ... somehow */
+ }
+}
+
+static struct usb_request *
+zero_start_isoc_ep (struct usb_ep *ep, int gfp_flags)
+{
+ struct usb_request *req;
+ int status;
+
+ req = alloc_ep_req (ep, 512);
+ if (!req)
+ return NULL;
+
+ req->complete = zero_isoc_complete;
+
+ status = usb_ep_queue (ep, req, gfp_flags);
+ if (status) {
+ struct zero_dev *dev = ep->driver_data;
+
+ ERROR (dev, "start %s --> %d\n", ep->name, status);
+ free_ep_req (ep, req);
+ req = NULL;
+ }
+
+ return req;
+}
+
+/* change our operational config. this code must agree with the code
+ * that returns config descriptors, and altsetting code.
+ *
+ * it's also responsible for power management interactions. some
+ * configurations might not work with our current power sources.
+ *
+ * note that some device controller hardware will constrain what this
+ * code can do, perhaps by disallowing more than one configuration or
+ * by limiting configuration choices (like the pxa2xx).
+ */
+static int
+zero_set_config (struct zero_dev *dev, unsigned number, int gfp_flags)
+{
+ int result = 0;
+ struct usb_gadget *gadget = dev->gadget;
+ const struct usb_endpoint_descriptor *d;
+ struct usb_ep *ep;
+
+ if (number == dev->config)
+ return 0;
+
+ zero_reset_config (dev);
+
+ gadget_for_each_ep (ep, gadget) {
+
+ if (strcmp (ep->name, "ep4") == 0) {
+
+ d = (struct usb_endpoint_descripter *)&za_23; // isoc ep desc for audio i/f alt setting 6
+ result = usb_ep_enable (ep, d);
+
+ if (result == 0) {
+ ep->driver_data = dev;
+ dev->in_ep = ep;
+
+ if (zero_start_isoc_ep (ep, gfp_flags) != 0) {
+
+ dev->in_ep = ep;
+ continue;
+ }
+
+ usb_ep_disable (ep);
+ result = -EIO;
+ }
+ }
+
+ }
+
+ dev->config = number;
+ return result;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void zero_setup_complete (struct usb_ep *ep, struct usb_request *req)
+{
+ if (req->status || req->actual != req->length)
+ DBG ((struct zero_dev *) ep->driver_data,
+ "setup complete --> %d, %d/%d\n",
+ req->status, req->actual, req->length);
+}
+
+/*
+ * The setup() callback implements all the ep0 functionality that's
+ * not handled lower down, in hardware or the hardware driver (like
+ * device and endpoint feature flags, and their status). It's all
+ * housekeeping for the gadget function we're implementing. Most of
+ * the work is in config-specific setup.
+ */
+static int
+zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
+{
+ struct zero_dev *dev = get_gadget_data (gadget);
+ struct usb_request *req = dev->req;
+ int value = -EOPNOTSUPP;
+
+ /* usually this stores reply data in the pre-allocated ep0 buffer,
+ * but config change events will reconfigure hardware.
+ */
+ req->zero = 0;
+ switch (ctrl->bRequest) {
+
+ case USB_REQ_GET_DESCRIPTOR:
+
+ switch (ctrl->wValue >> 8) {
+
+ case USB_DT_DEVICE:
+ value = min (ctrl->wLength, (u16) sizeof device_desc);
+ memcpy (req->buf, &device_desc, value);
+ break;
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+ case USB_DT_DEVICE_QUALIFIER:
+ if (!gadget->is_dualspeed)
+ break;
+ value = min (ctrl->wLength, (u16) sizeof dev_qualifier);
+ memcpy (req->buf, &dev_qualifier, value);
+ break;
+
+ case USB_DT_OTHER_SPEED_CONFIG:
+ if (!gadget->is_dualspeed)
+ break;
+ // FALLTHROUGH
+#endif /* CONFIG_USB_GADGET_DUALSPEED */
+ case USB_DT_CONFIG:
+ value = config_buf (gadget, req->buf,
+ ctrl->wValue >> 8,
+ ctrl->wValue & 0xff);
+ if (value >= 0)
+ value = min (ctrl->wLength, (u16) value);
+ break;
+
+ case USB_DT_STRING:
+ /* wIndex == language code.
+ * this driver only handles one language, you can
+ * add string tables for other languages, using
+ * any UTF-8 characters
+ */
+ value = usb_gadget_get_string (&stringtab,
+ ctrl->wValue & 0xff, req->buf);
+ if (value >= 0) {
+ value = min (ctrl->wLength, (u16) value);
+ }
+ break;
+ }
+ break;
+
+ /* currently two configs, two speeds */
+ case USB_REQ_SET_CONFIGURATION:
+ if (ctrl->bRequestType != 0)
+ goto unknown;
+
+ spin_lock (&dev->lock);
+ value = zero_set_config (dev, ctrl->wValue, GFP_ATOMIC);
+ spin_unlock (&dev->lock);
+ break;
+ case USB_REQ_GET_CONFIGURATION:
+ if (ctrl->bRequestType != USB_DIR_IN)
+ goto unknown;
+ *(u8 *)req->buf = dev->config;
+ value = min (ctrl->wLength, (u16) 1);
+ break;
+
+ /* until we add altsetting support, or other interfaces,
+ * only 0/0 are possible. pxa2xx only supports 0/0 (poorly)
+ * and already killed pending endpoint I/O.
+ */
+ case USB_REQ_SET_INTERFACE:
+
+ if (ctrl->bRequestType != USB_RECIP_INTERFACE)
+ goto unknown;
+ spin_lock (&dev->lock);
+ if (dev->config) {
+ u8 config = dev->config;
+
+ /* resets interface configuration, forgets about
+ * previous transaction state (queued bufs, etc)
+ * and re-inits endpoint state (toggle etc)
+ * no response queued, just zero status == success.
+ * if we had more than one interface we couldn't
+ * use this "reset the config" shortcut.
+ */
+ zero_reset_config (dev);
+ zero_set_config (dev, config, GFP_ATOMIC);
+ value = 0;
+ }
+ spin_unlock (&dev->lock);
+ break;
+ case USB_REQ_GET_INTERFACE:
+ if ((ctrl->bRequestType == 0x21) && (ctrl->wIndex == 0x02)) {
+ value = ctrl->wLength;
+ break;
+ }
+ else {
+ if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE))
+ goto unknown;
+ if (!dev->config)
+ break;
+ if (ctrl->wIndex != 0) {
+ value = -EDOM;
+ break;
+ }
+ *(u8 *)req->buf = 0;
+ value = min (ctrl->wLength, (u16) 1);
+ }
+ break;
+
+ /*
+ * These are the same vendor-specific requests supported by
+ * Intel's USB 2.0 compliance test devices. We exceed that
+ * device spec by allowing multiple-packet requests.
+ */
+ case 0x5b: /* control WRITE test -- fill the buffer */
+ if (ctrl->bRequestType != (USB_DIR_OUT|USB_TYPE_VENDOR))
+ goto unknown;
+ if (ctrl->wValue || ctrl->wIndex)
+ break;
+ /* just read that many bytes into the buffer */
+ if (ctrl->wLength > USB_BUFSIZ)
+ break;
+ value = ctrl->wLength;
+ break;
+ case 0x5c: /* control READ test -- return the buffer */
+ if (ctrl->bRequestType != (USB_DIR_IN|USB_TYPE_VENDOR))
+ goto unknown;
+ if (ctrl->wValue || ctrl->wIndex)
+ break;
+ /* expect those bytes are still in the buffer; send back */
+ if (ctrl->wLength > USB_BUFSIZ
+ || ctrl->wLength != req->length)
+ break;
+ value = ctrl->wLength;
+ break;
+
+ case 0x01: // SET_CUR
+ case 0x02:
+ case 0x03:
+ case 0x04:
+ case 0x05:
+ value = ctrl->wLength;
+ break;
+ case 0x81:
+ switch (ctrl->wValue) {
+ case 0x0201:
+ case 0x0202:
+ ((u8*)req->buf)[0] = 0x00;
+ ((u8*)req->buf)[1] = 0xe3;
+ break;
+ case 0x0300:
+ case 0x0500:
+ ((u8*)req->buf)[0] = 0x00;
+ break;
+ }
+ //((u8*)req->buf)[0] = 0x81;
+ //((u8*)req->buf)[1] = 0x81;
+ value = ctrl->wLength;
+ break;
+ case 0x82:
+ switch (ctrl->wValue) {
+ case 0x0201:
+ case 0x0202:
+ ((u8*)req->buf)[0] = 0x00;
+ ((u8*)req->buf)[1] = 0xc3;
+ break;
+ case 0x0300:
+ case 0x0500:
+ ((u8*)req->buf)[0] = 0x00;
+ break;
+ }
+ //((u8*)req->buf)[0] = 0x82;
+ //((u8*)req->buf)[1] = 0x82;
+ value = ctrl->wLength;
+ break;
+ case 0x83:
+ switch (ctrl->wValue) {
+ case 0x0201:
+ case 0x0202:
+ ((u8*)req->buf)[0] = 0x00;
+ ((u8*)req->buf)[1] = 0x00;
+ break;
+ case 0x0300:
+ ((u8*)req->buf)[0] = 0x60;
+ break;
+ case 0x0500:
+ ((u8*)req->buf)[0] = 0x18;
+ break;
+ }
+ //((u8*)req->buf)[0] = 0x83;
+ //((u8*)req->buf)[1] = 0x83;
+ value = ctrl->wLength;
+ break;
+ case 0x84:
+ switch (ctrl->wValue) {
+ case 0x0201:
+ case 0x0202:
+ ((u8*)req->buf)[0] = 0x00;
+ ((u8*)req->buf)[1] = 0x01;
+ break;
+ case 0x0300:
+ case 0x0500:
+ ((u8*)req->buf)[0] = 0x08;
+ break;
+ }
+ //((u8*)req->buf)[0] = 0x84;
+ //((u8*)req->buf)[1] = 0x84;
+ value = ctrl->wLength;
+ break;
+ case 0x85:
+ ((u8*)req->buf)[0] = 0x85;
+ ((u8*)req->buf)[1] = 0x85;
+ value = ctrl->wLength;
+ break;
+
+
+ default:
+unknown:
+ printk("unknown control req%02x.%02x v%04x i%04x l%d\n",
+ ctrl->bRequestType, ctrl->bRequest,
+ ctrl->wValue, ctrl->wIndex, ctrl->wLength);
+ }
+
+ /* respond with data transfer before status phase? */
+ if (value >= 0) {
+ req->length = value;
+ req->zero = value < ctrl->wLength
+ && (value % gadget->ep0->maxpacket) == 0;
+ value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC);
+ if (value < 0) {
+ DBG (dev, "ep_queue < 0 --> %d\n", value);
+ req->status = 0;
+ zero_setup_complete (gadget->ep0, req);
+ }
+ }
+
+ /* device either stalls (value < 0) or reports success */
+ return value;
+}
+
+static void
+zero_disconnect (struct usb_gadget *gadget)
+{
+ struct zero_dev *dev = get_gadget_data (gadget);
+ unsigned long flags;
+
+ spin_lock_irqsave (&dev->lock, flags);
+ zero_reset_config (dev);
+
+ /* a more significant application might have some non-usb
+ * activities to quiesce here, saving resources like power
+ * or pushing the notification up a network stack.
+ */
+ spin_unlock_irqrestore (&dev->lock, flags);
+
+ /* next we may get setup() calls to enumerate new connections;
+ * or an unbind() during shutdown (including removing module).
+ */
+}
+
+static void
+zero_autoresume (unsigned long _dev)
+{
+ struct zero_dev *dev = (struct zero_dev *) _dev;
+ int status;
+
+ /* normally the host would be woken up for something
+ * more significant than just a timer firing...
+ */
+ if (dev->gadget->speed != USB_SPEED_UNKNOWN) {
+ status = usb_gadget_wakeup (dev->gadget);
+ DBG (dev, "wakeup --> %d\n", status);
+ }
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void
+zero_unbind (struct usb_gadget *gadget)
+{
+ struct zero_dev *dev = get_gadget_data (gadget);
+
+ DBG (dev, "unbind\n");
+
+ /* we've already been disconnected ... no i/o is active */
+ if (dev->req)
+ free_ep_req (gadget->ep0, dev->req);
+ del_timer_sync (&dev->resume);
+ kfree (dev);
+ set_gadget_data (gadget, NULL);
+}
+
+static int
+zero_bind (struct usb_gadget *gadget)
+{
+ struct zero_dev *dev;
+ //struct usb_ep *ep;
+
+ printk("binding\n");
+ /*
+ * DRIVER POLICY CHOICE: you may want to do this differently.
+ * One thing to avoid is reusing a bcdDevice revision code
+ * with different host-visible configurations or behavior
+ * restrictions -- using ep1in/ep2out vs ep1out/ep3in, etc
+ */
+ //device_desc.bcdDevice = __constant_cpu_to_le16 (0x0201);
+
+
+ /* ok, we made sense of the hardware ... */
+ dev = kmalloc (sizeof *dev, SLAB_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+ memset (dev, 0, sizeof *dev);
+ spin_lock_init (&dev->lock);
+ dev->gadget = gadget;
+ set_gadget_data (gadget, dev);
+
+ /* preallocate control response and buffer */
+ dev->req = usb_ep_alloc_request (gadget->ep0, GFP_KERNEL);
+ if (!dev->req)
+ goto enomem;
+ dev->req->buf = usb_ep_alloc_buffer (gadget->ep0, USB_BUFSIZ,
+ &dev->req->dma, GFP_KERNEL);
+ if (!dev->req->buf)
+ goto enomem;
+
+ dev->req->complete = zero_setup_complete;
+
+ device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
+
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+ /* assume ep0 uses the same value for both speeds ... */
+ dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0;
+
+ /* and that all endpoints are dual-speed */
+ //hs_source_desc.bEndpointAddress = fs_source_desc.bEndpointAddress;
+ //hs_sink_desc.bEndpointAddress = fs_sink_desc.bEndpointAddress;
+#endif
+
+ usb_gadget_set_selfpowered (gadget);
+
+ init_timer (&dev->resume);
+ dev->resume.function = zero_autoresume;
+ dev->resume.data = (unsigned long) dev;
+
+ gadget->ep0->driver_data = dev;
+
+ INFO (dev, "%s, version: " DRIVER_VERSION "\n", longname);
+ INFO (dev, "using %s, OUT %s IN %s\n", gadget->name,
+ EP_OUT_NAME, EP_IN_NAME);
+
+ snprintf (manufacturer, sizeof manufacturer,
+ UTS_SYSNAME " " UTS_RELEASE " with %s",
+ gadget->name);
+
+ return 0;
+
+enomem:
+ zero_unbind (gadget);
+ return -ENOMEM;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void
+zero_suspend (struct usb_gadget *gadget)
+{
+ struct zero_dev *dev = get_gadget_data (gadget);
+
+ if (gadget->speed == USB_SPEED_UNKNOWN)
+ return;
+
+ if (autoresume) {
+ mod_timer (&dev->resume, jiffies + (HZ * autoresume));
+ DBG (dev, "suspend, wakeup in %d seconds\n", autoresume);
+ } else
+ DBG (dev, "suspend\n");
+}
+
+static void
+zero_resume (struct usb_gadget *gadget)
+{
+ struct zero_dev *dev = get_gadget_data (gadget);
+
+ DBG (dev, "resume\n");
+ del_timer (&dev->resume);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static struct usb_gadget_driver zero_driver = {
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+ .speed = USB_SPEED_HIGH,
+#else
+ .speed = USB_SPEED_FULL,
+#endif
+ .function = (char *) longname,
+ .bind = zero_bind,
+ .unbind = zero_unbind,
+
+ .setup = zero_setup,
+ .disconnect = zero_disconnect,
+
+ .suspend = zero_suspend,
+ .resume = zero_resume,
+
+ .driver = {
+ .name = (char *) shortname,
+ // .shutdown = ...
+ // .suspend = ...
+ // .resume = ...
+ },
+};
+
+MODULE_AUTHOR ("David Brownell");
+MODULE_LICENSE ("Dual BSD/GPL");
+
+static struct proc_dir_entry *pdir, *pfile;
+
+static int isoc_read_data (char *page, char **start,
+ off_t off, int count,
+ int *eof, void *data)
+{
+ int i;
+ static int c = 0;
+ static int done = 0;
+ static int s = 0;
+
+/*
+ printk ("\ncount: %d\n", count);
+ printk ("rbuf_start: %d\n", rbuf_start);
+ printk ("rbuf_len: %d\n", rbuf_len);
+ printk ("off: %d\n", off);
+ printk ("start: %p\n\n", *start);
+*/
+ if (done) {
+ c = 0;
+ done = 0;
+ *eof = 1;
+ return 0;
+ }
+
+ if (c == 0) {
+ if (rbuf_len == RBUF_LEN)
+ s = rbuf_start;
+ else s = 0;
+ }
+
+ for (i=0; i<count && c<rbuf_len; i++, c++) {
+ page[i] = rbuf[(c+s) % RBUF_LEN];
+ }
+ *start = page;
+
+ if (c >= rbuf_len) {
+ *eof = 1;
+ done = 1;
+ }
+
+
+ return i;
+}
+
+static int __init init (void)
+{
+
+ int retval = 0;
+
+ pdir = proc_mkdir("isoc_test", NULL);
+ if(pdir == NULL) {
+ retval = -ENOMEM;
+ printk("Error creating dir\n");
+ goto done;
+ }
+ pdir->owner = THIS_MODULE;
+
+ pfile = create_proc_read_entry("isoc_data",
+ 0444, pdir,
+ isoc_read_data,
+ NULL);
+ if (pfile == NULL) {
+ retval = -ENOMEM;
+ printk("Error creating file\n");
+ goto no_file;
+ }
+ pfile->owner = THIS_MODULE;
+
+ return usb_gadget_register_driver (&zero_driver);
+
+ no_file:
+ remove_proc_entry("isoc_data", NULL);
+ done:
+ return retval;
+}
+module_init (init);
+
+static void __exit cleanup (void)
+{
+
+ usb_gadget_unregister_driver (&zero_driver);
+
+ remove_proc_entry("isoc_data", pdir);
+ remove_proc_entry("isoc_test", NULL);
+}
+module_exit (cleanup);
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_attr.c $
+ * $Revision: 1.2 $
+ * $Date: 2008-11-21 05:39:15 $
+ * $Change: 1064918 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ *
+ * The diagnostic interface will provide access to the controller for
+ * bringing up the hardware and testing. The Linux driver attributes
+ * feature will be used to provide the Linux Diagnostic
+ * Interface. These attributes are accessed through sysfs.
+ */
+
+/** @page "Linux Module Attributes"
+ *
+ * The Linux module attributes feature is used to provide the Linux
+ * Diagnostic Interface. These attributes are accessed through sysfs.
+ * The diagnostic interface will provide access to the controller for
+ * bringing up the hardware and testing.
+
+
+ The following table shows the attributes.
+ <table>
+ <tr>
+ <td><b> Name</b></td>
+ <td><b> Description</b></td>
+ <td><b> Access</b></td>
+ </tr>
+
+ <tr>
+ <td> mode </td>
+ <td> Returns the current mode: 0 for device mode, 1 for host mode</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hnpcapable </td>
+ <td> Gets or sets the "HNP-capable" bit in the Core USB Configuraton Register.
+ Read returns the current value.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> srpcapable </td>
+ <td> Gets or sets the "SRP-capable" bit in the Core USB Configuraton Register.
+ Read returns the current value.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> hnp </td>
+ <td> Initiates the Host Negotiation Protocol. Read returns the status.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> srp </td>
+ <td> Initiates the Session Request Protocol. Read returns the status.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> buspower </td>
+ <td> Gets or sets the Power State of the bus (0 - Off or 1 - On)</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> bussuspend </td>
+ <td> Suspends the USB bus.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> busconnected </td>
+ <td> Gets the connection status of the bus</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> gotgctl </td>
+ <td> Gets or sets the Core Control Status Register.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> gusbcfg </td>
+ <td> Gets or sets the Core USB Configuration Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> grxfsiz </td>
+ <td> Gets or sets the Receive FIFO Size Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> gnptxfsiz </td>
+ <td> Gets or sets the non-periodic Transmit Size Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> gpvndctl </td>
+ <td> Gets or sets the PHY Vendor Control Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> ggpio </td>
+ <td> Gets the value in the lower 16-bits of the General Purpose IO Register
+ or sets the upper 16 bits.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> guid </td>
+ <td> Gets or sets the value of the User ID Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> gsnpsid </td>
+ <td> Gets the value of the Synopsys ID Regester</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> devspeed </td>
+ <td> Gets or sets the device speed setting in the DCFG register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> enumspeed </td>
+ <td> Gets the device enumeration Speed.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hptxfsiz </td>
+ <td> Gets the value of the Host Periodic Transmit FIFO</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hprt0 </td>
+ <td> Gets or sets the value in the Host Port Control and Status Register</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> regoffset </td>
+ <td> Sets the register offset for the next Register Access</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> regvalue </td>
+ <td> Gets or sets the value of the register at the offset in the regoffset attribute.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> remote_wakeup </td>
+ <td> On read, shows the status of Remote Wakeup. On write, initiates a remote
+ wakeup of the host. When bit 0 is 1 and Remote Wakeup is enabled, the Remote
+ Wakeup signalling bit in the Device Control Register is set for 1
+ milli-second.</td>
+ <td> Read/Write</td>
+ </tr>
+
+ <tr>
+ <td> regdump </td>
+ <td> Dumps the contents of core registers.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> spramdump </td>
+ <td> Dumps the contents of core registers.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hcddump </td>
+ <td> Dumps the current HCD state.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> hcd_frrem </td>
+ <td> Shows the average value of the Frame Remaining
+ field in the Host Frame Number/Frame Remaining register when an SOF interrupt
+ occurs. This can be used to determine the average interrupt latency. Also
+ shows the average Frame Remaining value for start_transfer and the "a" and
+ "b" sample points. The "a" and "b" sample points may be used during debugging
+ bto determine how long it takes to execute a section of the HCD code.</td>
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> rd_reg_test </td>
+ <td> Displays the time required to read the GNPTXFSIZ register many times
+ (the output shows the number of times the register is read).
+ <td> Read</td>
+ </tr>
+
+ <tr>
+ <td> wr_reg_test </td>
+ <td> Displays the time required to write the GNPTXFSIZ register many times
+ (the output shows the number of times the register is written).
+ <td> Read</td>
+ </tr>
+
+ </table>
+
+ Example usage:
+ To get the current mode:
+ cat /sys/devices/lm0/mode
+
+ To power down the USB:
+ echo 0 > /sys/devices/lm0/buspower
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/stat.h> /* permission constants */
+#include <linux/version.h>
+
+#include <asm/io.h>
+
+#include "linux/dwc_otg_plat.h"
+#include "dwc_otg_attr.h"
+#include "dwc_otg_driver.h"
+#include "dwc_otg_pcd.h"
+#include "dwc_otg_hcd.h"
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+/*
+ * MACROs for defining sysfs attribute
+ */
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); \
+ uint32_t val; \
+ val = dwc_read_reg32 (_addr_); \
+ val = (val & (_mask_)) >> _shift_; \
+ return sprintf (buf, "%s = 0x%x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); \
+ uint32_t set = simple_strtoul(buf, NULL, 16); \
+ uint32_t clear = set; \
+ clear = ((~clear) << _shift_) & _mask_; \
+ set = (set << _shift_) & _mask_; \
+ dev_dbg(_dev, "Storing Address=0x%08x Set=0x%08x Clear=0x%08x\n", (uint32_t)_addr_, set, clear); \
+ dwc_modify_reg32(_addr_, clear, set); \
+ return count; \
+}
+
+/*
+ * MACROs for defining sysfs attribute for 32-bit registers
+ */
+#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_addr_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
+{ \
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); \
+ uint32_t val; \
+ val = dwc_read_reg32 (_addr_); \
+ return sprintf (buf, "%s = 0x%08x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_addr_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev); \
+ uint32_t val = simple_strtoul(buf, NULL, 16); \
+ dev_dbg(_dev, "Storing Address=0x%08x Val=0x%08x\n", (uint32_t)_addr_, val); \
+ dwc_write_reg32(_addr_, val); \
+ return count; \
+}
+
+#else
+
+/*
+ * MACROs for defining sysfs attribute
+ */
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, char *buf) \
+{ \
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);\
+ uint32_t val; \
+ val = dwc_read_reg32 (_addr_); \
+ val = (val & (_mask_)) >> _shift_; \
+ return sprintf (buf, "%s = 0x%x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, const char *buf, size_t count) \
+{ \
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);\
+ uint32_t set = simple_strtoul(buf, NULL, 16); \
+ uint32_t clear = set; \
+ clear = ((~clear) << _shift_) & _mask_; \
+ set = (set << _shift_) & _mask_; \
+ dev_dbg(_dev, "Storing Address=0x%08x Set=0x%08x Clear=0x%08x\n", (uint32_t)_addr_, set, clear); \
+ dwc_modify_reg32(_addr_, clear, set); \
+ return count; \
+}
+
+/*
+ * MACROs for defining sysfs attribute for 32-bit registers
+ */
+#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_addr_,_string_) \
+static ssize_t _otg_attr_name_##_show (struct device *_dev, char *buf) \
+{ \
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);\
+ uint32_t val; \
+ val = dwc_read_reg32 (_addr_); \
+ return sprintf (buf, "%s = 0x%08x\n", _string_, val); \
+}
+#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_addr_,_string_) \
+static ssize_t _otg_attr_name_##_store (struct device *_dev, const char *buf, size_t count) \
+{ \
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);\
+ uint32_t val = simple_strtoul(buf, NULL, 16); \
+ dev_dbg(_dev, "Storing Address=0x%08x Val=0x%08x\n", (uint32_t)_addr_, val); \
+ dwc_write_reg32(_addr_, val); \
+ return count; \
+}
+
+#endif
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_RW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store);
+
+#define DWC_OTG_DEVICE_ATTR_BITFIELD_RO(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_addr_,_mask_,_shift_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL);
+
+#define DWC_OTG_DEVICE_ATTR_REG32_RW(_otg_attr_name_,_addr_,_string_) \
+DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_addr_,_string_) \
+DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_addr_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store);
+
+#define DWC_OTG_DEVICE_ATTR_REG32_RO(_otg_attr_name_,_addr_,_string_) \
+DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_addr_,_string_) \
+DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL);
+
+
+/** @name Functions for Show/Store of Attributes */
+/**@{*/
+
+/**
+ * Show the register offset of the Register Access.
+ */
+static ssize_t regoffset_show( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ char *buf)
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+ return snprintf(buf, sizeof("0xFFFFFFFF\n")+1,"0x%08x\n", otg_dev->reg_offset);
+}
+
+/**
+ * Set the register offset for the next Register Access Read/Write
+ */
+static ssize_t regoffset_store( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ const char *buf,
+ size_t count )
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ uint32_t offset = simple_strtoul(buf, NULL, 16);
+ //dev_dbg(_dev, "Offset=0x%08x\n", offset);
+ if (offset < 0x00040000 ) {
+ otg_dev->reg_offset = offset;
+ }
+ else {
+ dev_err( _dev, "invalid offset\n" );
+ }
+
+ return count;
+}
+DEVICE_ATTR(regoffset, S_IRUGO|S_IWUSR, (void *)regoffset_show, regoffset_store);
+
+
+/**
+ * Show the value of the register at the offset in the reg_offset
+ * attribute.
+ */
+static ssize_t regvalue_show( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ char *buf)
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ uint32_t val;
+ volatile uint32_t *addr;
+
+ if (otg_dev->reg_offset != 0xFFFFFFFF &&
+ 0 != otg_dev->base) {
+ /* Calculate the address */
+ addr = (uint32_t*)(otg_dev->reg_offset +
+ (uint8_t*)otg_dev->base);
+ //dev_dbg(_dev, "@0x%08x\n", (unsigned)addr);
+ val = dwc_read_reg32( addr );
+ return snprintf(buf, sizeof("Reg@0xFFFFFFFF = 0xFFFFFFFF\n")+1,
+ "Reg@0x%06x = 0x%08x\n",
+ otg_dev->reg_offset, val);
+ }
+ else {
+ dev_err(_dev, "Invalid offset (0x%0x)\n",
+ otg_dev->reg_offset);
+ return sprintf(buf, "invalid offset\n" );
+ }
+}
+
+/**
+ * Store the value in the register at the offset in the reg_offset
+ * attribute.
+ *
+ */
+static ssize_t regvalue_store( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ const char *buf,
+ size_t count )
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ volatile uint32_t * addr;
+ uint32_t val = simple_strtoul(buf, NULL, 16);
+ //dev_dbg(_dev, "Offset=0x%08x Val=0x%08x\n", otg_dev->reg_offset, val);
+ if (otg_dev->reg_offset != 0xFFFFFFFF && 0 != otg_dev->base) {
+ /* Calculate the address */
+ addr = (uint32_t*)(otg_dev->reg_offset +
+ (uint8_t*)otg_dev->base);
+ //dev_dbg(_dev, "@0x%08x\n", (unsigned)addr);
+ dwc_write_reg32( addr, val );
+ }
+ else {
+ dev_err(_dev, "Invalid Register Offset (0x%08x)\n",
+ otg_dev->reg_offset);
+ }
+ return count;
+}
+DEVICE_ATTR(regvalue, S_IRUGO|S_IWUSR, regvalue_show, regvalue_store);
+
+/*
+ * Attributes
+ */
+DWC_OTG_DEVICE_ATTR_BITFIELD_RO(mode,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<20),20,"Mode");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(hnpcapable,&(otg_dev->core_if->core_global_regs->gusbcfg),(1<<9),9,"Mode");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(srpcapable,&(otg_dev->core_if->core_global_regs->gusbcfg),(1<<8),8,"Mode");
+
+//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(buspower,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode");
+//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(bussuspend,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RO(busconnected,otg_dev->core_if->host_if->hprt0,0x01,0,"Bus Connected");
+
+DWC_OTG_DEVICE_ATTR_REG32_RW(gotgctl,&(otg_dev->core_if->core_global_regs->gotgctl),"GOTGCTL");
+DWC_OTG_DEVICE_ATTR_REG32_RW(gusbcfg,&(otg_dev->core_if->core_global_regs->gusbcfg),"GUSBCFG");
+DWC_OTG_DEVICE_ATTR_REG32_RW(grxfsiz,&(otg_dev->core_if->core_global_regs->grxfsiz),"GRXFSIZ");
+DWC_OTG_DEVICE_ATTR_REG32_RW(gnptxfsiz,&(otg_dev->core_if->core_global_regs->gnptxfsiz),"GNPTXFSIZ");
+DWC_OTG_DEVICE_ATTR_REG32_RW(gpvndctl,&(otg_dev->core_if->core_global_regs->gpvndctl),"GPVNDCTL");
+DWC_OTG_DEVICE_ATTR_REG32_RW(ggpio,&(otg_dev->core_if->core_global_regs->ggpio),"GGPIO");
+DWC_OTG_DEVICE_ATTR_REG32_RW(guid,&(otg_dev->core_if->core_global_regs->guid),"GUID");
+DWC_OTG_DEVICE_ATTR_REG32_RO(gsnpsid,&(otg_dev->core_if->core_global_regs->gsnpsid),"GSNPSID");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RW(devspeed,&(otg_dev->core_if->dev_if->dev_global_regs->dcfg),0x3,0,"Device Speed");
+DWC_OTG_DEVICE_ATTR_BITFIELD_RO(enumspeed,&(otg_dev->core_if->dev_if->dev_global_regs->dsts),0x6,1,"Device Enumeration Speed");
+
+DWC_OTG_DEVICE_ATTR_REG32_RO(hptxfsiz,&(otg_dev->core_if->core_global_regs->hptxfsiz),"HPTXFSIZ");
+DWC_OTG_DEVICE_ATTR_REG32_RW(hprt0,otg_dev->core_if->host_if->hprt0,"HPRT0");
+
+
+/**
+ * @todo Add code to initiate the HNP.
+ */
+/**
+ * Show the HNP status bit
+ */
+static ssize_t hnp_show( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ char *buf)
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ gotgctl_data_t val;
+ val.d32 = dwc_read_reg32 (&(otg_dev->core_if->core_global_regs->gotgctl));
+ return sprintf (buf, "HstNegScs = 0x%x\n", val.b.hstnegscs);
+}
+
+/**
+ * Set the HNP Request bit
+ */
+static ssize_t hnp_store( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ const char *buf,
+ size_t count )
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ uint32_t in = simple_strtoul(buf, NULL, 16);
+ uint32_t *addr = (uint32_t *)&(otg_dev->core_if->core_global_regs->gotgctl);
+ gotgctl_data_t mem;
+ mem.d32 = dwc_read_reg32(addr);
+ mem.b.hnpreq = in;
+ dev_dbg(_dev, "Storing Address=0x%08x Data=0x%08x\n", (uint32_t)addr, mem.d32);
+ dwc_write_reg32(addr, mem.d32);
+ return count;
+}
+DEVICE_ATTR(hnp, 0644, hnp_show, hnp_store);
+
+/**
+ * @todo Add code to initiate the SRP.
+ */
+/**
+ * Show the SRP status bit
+ */
+static ssize_t srp_show( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ char *buf)
+{
+#ifndef DWC_HOST_ONLY
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ gotgctl_data_t val;
+ val.d32 = dwc_read_reg32 (&(otg_dev->core_if->core_global_regs->gotgctl));
+ return sprintf (buf, "SesReqScs = 0x%x\n", val.b.sesreqscs);
+#else
+ return sprintf(buf, "Host Only Mode!\n");
+#endif
+}
+
+
+
+/**
+ * Set the SRP Request bit
+ */
+static ssize_t srp_store( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ const char *buf,
+ size_t count )
+{
+#ifndef DWC_HOST_ONLY
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ dwc_otg_pcd_initiate_srp(otg_dev->pcd);
+#endif
+ return count;
+}
+DEVICE_ATTR(srp, 0644, srp_show, srp_store);
+
+/**
+ * @todo Need to do more for power on/off?
+ */
+/**
+ * Show the Bus Power status
+ */
+static ssize_t buspower_show( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ char *buf)
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ hprt0_data_t val;
+ val.d32 = dwc_read_reg32 (otg_dev->core_if->host_if->hprt0);
+ return sprintf (buf, "Bus Power = 0x%x\n", val.b.prtpwr);
+}
+
+
+/**
+ * Set the Bus Power status
+ */
+static ssize_t buspower_store( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ const char *buf,
+ size_t count )
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ uint32_t on = simple_strtoul(buf, NULL, 16);
+ uint32_t *addr = (uint32_t *)otg_dev->core_if->host_if->hprt0;
+ hprt0_data_t mem;
+
+ mem.d32 = dwc_read_reg32(addr);
+ mem.b.prtpwr = on;
+
+ //dev_dbg(_dev, "Storing Address=0x%08x Data=0x%08x\n", (uint32_t)addr, mem.d32);
+ dwc_write_reg32(addr, mem.d32);
+
+ return count;
+}
+DEVICE_ATTR(buspower, 0644, buspower_show, buspower_store);
+
+/**
+ * @todo Need to do more for suspend?
+ */
+/**
+ * Show the Bus Suspend status
+ */
+static ssize_t bussuspend_show( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ char *buf)
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ hprt0_data_t val;
+ val.d32 = dwc_read_reg32 (otg_dev->core_if->host_if->hprt0);
+ return sprintf (buf, "Bus Suspend = 0x%x\n", val.b.prtsusp);
+}
+
+/**
+ * Set the Bus Suspend status
+ */
+static ssize_t bussuspend_store( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ const char *buf,
+ size_t count )
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ uint32_t in = simple_strtoul(buf, NULL, 16);
+ uint32_t *addr = (uint32_t *)otg_dev->core_if->host_if->hprt0;
+ hprt0_data_t mem;
+ mem.d32 = dwc_read_reg32(addr);
+ mem.b.prtsusp = in;
+ dev_dbg(_dev, "Storing Address=0x%08x Data=0x%08x\n", (uint32_t)addr, mem.d32);
+ dwc_write_reg32(addr, mem.d32);
+ return count;
+}
+DEVICE_ATTR(bussuspend, 0644, bussuspend_show, bussuspend_store);
+
+/**
+ * Show the status of Remote Wakeup.
+ */
+static ssize_t remote_wakeup_show( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ char *buf)
+{
+#ifndef DWC_HOST_ONLY
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ dctl_data_t val;
+ val.d32 =
+ dwc_read_reg32( &otg_dev->core_if->dev_if->dev_global_regs->dctl);
+ return sprintf( buf, "Remote Wakeup = %d Enabled = %d\n",
+ val.b.rmtwkupsig, otg_dev->pcd->remote_wakeup_enable);
+#else
+ return sprintf(buf, "Host Only Mode!\n");
+#endif
+}
+/**
+ * Initiate a remote wakeup of the host. The Device control register
+ * Remote Wakeup Signal bit is written if the PCD Remote wakeup enable
+ * flag is set.
+ *
+ */
+static ssize_t remote_wakeup_store( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ const char *buf,
+ size_t count )
+{
+#ifndef DWC_HOST_ONLY
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ uint32_t val = simple_strtoul(buf, NULL, 16);
+ if (val&1) {
+ dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 1);
+ }
+ else {
+ dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 0);
+ }
+#endif
+ return count;
+}
+DEVICE_ATTR(remote_wakeup, S_IRUGO|S_IWUSR, remote_wakeup_show,
+ remote_wakeup_store);
+
+/**
+ * Dump global registers and either host or device registers (depending on the
+ * current mode of the core).
+ */
+static ssize_t regdump_show( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ char *buf)
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ dwc_otg_dump_global_registers( otg_dev->core_if);
+ if (dwc_otg_is_host_mode(otg_dev->core_if)) {
+ dwc_otg_dump_host_registers( otg_dev->core_if);
+ } else {
+ dwc_otg_dump_dev_registers( otg_dev->core_if);
+
+ }
+ return sprintf( buf, "Register Dump\n" );
+}
+
+DEVICE_ATTR(regdump, S_IRUGO|S_IWUSR, regdump_show, 0);
+
+/**
+ * Dump global registers and either host or device registers (depending on the
+ * current mode of the core).
+ */
+static ssize_t spramdump_show( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ char *buf)
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ dwc_otg_dump_spram( otg_dev->core_if);
+
+ return sprintf( buf, "SPRAM Dump\n" );
+}
+
+DEVICE_ATTR(spramdump, S_IRUGO|S_IWUSR, spramdump_show, 0);
+
+/**
+ * Dump the current hcd state.
+ */
+static ssize_t hcddump_show( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ char *buf)
+{
+#ifndef DWC_DEVICE_ONLY
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ dwc_otg_hcd_dump_state(otg_dev->hcd);
+#endif
+ return sprintf( buf, "HCD Dump\n" );
+}
+
+DEVICE_ATTR(hcddump, S_IRUGO|S_IWUSR, hcddump_show, 0);
+
+/**
+ * Dump the average frame remaining at SOF. This can be used to
+ * determine average interrupt latency. Frame remaining is also shown for
+ * start transfer and two additional sample points.
+ */
+static ssize_t hcd_frrem_show( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ char *buf)
+{
+#ifndef DWC_DEVICE_ONLY
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ dwc_otg_hcd_dump_frrem(otg_dev->hcd);
+#endif
+ return sprintf( buf, "HCD Dump Frame Remaining\n" );
+}
+
+DEVICE_ATTR(hcd_frrem, S_IRUGO|S_IWUSR, hcd_frrem_show, 0);
+
+/**
+ * Displays the time required to read the GNPTXFSIZ register many times (the
+ * output shows the number of times the register is read).
+ */
+#define RW_REG_COUNT 10000000
+#define MSEC_PER_JIFFIE 1000/HZ
+static ssize_t rd_reg_test_show( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ char *buf)
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ int i;
+ int time;
+ int start_jiffies;
+
+ printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
+ HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
+ start_jiffies = jiffies;
+ for (i = 0; i < RW_REG_COUNT; i++) {
+ dwc_read_reg32(&otg_dev->core_if->core_global_regs->gnptxfsiz);
+ }
+ time = jiffies - start_jiffies;
+ return sprintf( buf, "Time to read GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
+ RW_REG_COUNT, time * MSEC_PER_JIFFIE, time );
+}
+
+DEVICE_ATTR(rd_reg_test, S_IRUGO|S_IWUSR, rd_reg_test_show, 0);
+
+/**
+ * Displays the time required to write the GNPTXFSIZ register many times (the
+ * output shows the number of times the register is written).
+ */
+static ssize_t wr_reg_test_show( struct device *_dev,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct device_attribute *attr,
+#endif
+ char *buf)
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);
+
+ uint32_t reg_val;
+ int i;
+ int time;
+ int start_jiffies;
+
+ printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
+ HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
+ reg_val = dwc_read_reg32(&otg_dev->core_if->core_global_regs->gnptxfsiz);
+ start_jiffies = jiffies;
+ for (i = 0; i < RW_REG_COUNT; i++) {
+ dwc_write_reg32(&otg_dev->core_if->core_global_regs->gnptxfsiz, reg_val);
+ }
+ time = jiffies - start_jiffies;
+ return sprintf( buf, "Time to write GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
+ RW_REG_COUNT, time * MSEC_PER_JIFFIE, time);
+}
+
+DEVICE_ATTR(wr_reg_test, S_IRUGO|S_IWUSR, wr_reg_test_show, 0);
+/**@}*/
+
+/**
+ * Create the device files
+ */
+void dwc_otg_attr_create (struct device *dev)
+{
+ int error;
+
+ error = device_create_file(dev, &dev_attr_regoffset);
+ error = device_create_file(dev, &dev_attr_regvalue);
+ error = device_create_file(dev, &dev_attr_mode);
+ error = device_create_file(dev, &dev_attr_hnpcapable);
+ error = device_create_file(dev, &dev_attr_srpcapable);
+ error = device_create_file(dev, &dev_attr_hnp);
+ error = device_create_file(dev, &dev_attr_srp);
+ error = device_create_file(dev, &dev_attr_buspower);
+ error = device_create_file(dev, &dev_attr_bussuspend);
+ error = device_create_file(dev, &dev_attr_busconnected);
+ error = device_create_file(dev, &dev_attr_gotgctl);
+ error = device_create_file(dev, &dev_attr_gusbcfg);
+ error = device_create_file(dev, &dev_attr_grxfsiz);
+ error = device_create_file(dev, &dev_attr_gnptxfsiz);
+ error = device_create_file(dev, &dev_attr_gpvndctl);
+ error = device_create_file(dev, &dev_attr_ggpio);
+ error = device_create_file(dev, &dev_attr_guid);
+ error = device_create_file(dev, &dev_attr_gsnpsid);
+ error = device_create_file(dev, &dev_attr_devspeed);
+ error = device_create_file(dev, &dev_attr_enumspeed);
+ error = device_create_file(dev, &dev_attr_hptxfsiz);
+ error = device_create_file(dev, &dev_attr_hprt0);
+ error = device_create_file(dev, &dev_attr_remote_wakeup);
+ error = device_create_file(dev, &dev_attr_regdump);
+ error = device_create_file(dev, &dev_attr_spramdump);
+ error = device_create_file(dev, &dev_attr_hcddump);
+ error = device_create_file(dev, &dev_attr_hcd_frrem);
+ error = device_create_file(dev, &dev_attr_rd_reg_test);
+ error = device_create_file(dev, &dev_attr_wr_reg_test);
+}
+
+/**
+ * Remove the device files
+ */
+void dwc_otg_attr_remove (struct device *dev)
+{
+ device_remove_file(dev, &dev_attr_regoffset);
+ device_remove_file(dev, &dev_attr_regvalue);
+ device_remove_file(dev, &dev_attr_mode);
+ device_remove_file(dev, &dev_attr_hnpcapable);
+ device_remove_file(dev, &dev_attr_srpcapable);
+ device_remove_file(dev, &dev_attr_hnp);
+ device_remove_file(dev, &dev_attr_srp);
+ device_remove_file(dev, &dev_attr_buspower);
+ device_remove_file(dev, &dev_attr_bussuspend);
+ device_remove_file(dev, &dev_attr_busconnected);
+ device_remove_file(dev, &dev_attr_gotgctl);
+ device_remove_file(dev, &dev_attr_gusbcfg);
+ device_remove_file(dev, &dev_attr_grxfsiz);
+ device_remove_file(dev, &dev_attr_gnptxfsiz);
+ device_remove_file(dev, &dev_attr_gpvndctl);
+ device_remove_file(dev, &dev_attr_ggpio);
+ device_remove_file(dev, &dev_attr_guid);
+ device_remove_file(dev, &dev_attr_gsnpsid);
+ device_remove_file(dev, &dev_attr_devspeed);
+ device_remove_file(dev, &dev_attr_enumspeed);
+ device_remove_file(dev, &dev_attr_hptxfsiz);
+ device_remove_file(dev, &dev_attr_hprt0);
+ device_remove_file(dev, &dev_attr_remote_wakeup);
+ device_remove_file(dev, &dev_attr_regdump);
+ device_remove_file(dev, &dev_attr_spramdump);
+ device_remove_file(dev, &dev_attr_hcddump);
+ device_remove_file(dev, &dev_attr_hcd_frrem);
+ device_remove_file(dev, &dev_attr_rd_reg_test);
+ device_remove_file(dev, &dev_attr_wr_reg_test);
+}
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_attr.h $
+ * $Revision: 1.2 $
+ * $Date: 2008-11-21 05:39:15 $
+ * $Change: 477051 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_OTG_ATTR_H__)
+#define __DWC_OTG_ATTR_H__
+
+/** @file
+ * This file contains the interface to the Linux device attributes.
+ */
+extern struct device_attribute dev_attr_regoffset;
+extern struct device_attribute dev_attr_regvalue;
+
+extern struct device_attribute dev_attr_mode;
+extern struct device_attribute dev_attr_hnpcapable;
+extern struct device_attribute dev_attr_srpcapable;
+extern struct device_attribute dev_attr_hnp;
+extern struct device_attribute dev_attr_srp;
+extern struct device_attribute dev_attr_buspower;
+extern struct device_attribute dev_attr_bussuspend;
+extern struct device_attribute dev_attr_busconnected;
+extern struct device_attribute dev_attr_gotgctl;
+extern struct device_attribute dev_attr_gusbcfg;
+extern struct device_attribute dev_attr_grxfsiz;
+extern struct device_attribute dev_attr_gnptxfsiz;
+extern struct device_attribute dev_attr_gpvndctl;
+extern struct device_attribute dev_attr_ggpio;
+extern struct device_attribute dev_attr_guid;
+extern struct device_attribute dev_attr_gsnpsid;
+extern struct device_attribute dev_attr_devspeed;
+extern struct device_attribute dev_attr_enumspeed;
+extern struct device_attribute dev_attr_hptxfsiz;
+extern struct device_attribute dev_attr_hprt0;
+
+void dwc_otg_attr_create (struct device *dev);
+void dwc_otg_attr_remove (struct device *dev);
+
+#endif
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil.c $
+ * $Revision: 1.7 $
+ * $Date: 2008-12-22 11:43:05 $
+ * $Change: 1117667 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ *
+ * The Core Interface Layer provides basic services for accessing and
+ * managing the DWC_otg hardware. These services are used by both the
+ * Host Controller Driver and the Peripheral Controller Driver.
+ *
+ * The CIL manages the memory map for the core so that the HCD and PCD
+ * don't have to do this separately. It also handles basic tasks like
+ * reading/writing the registers and data FIFOs in the controller.
+ * Some of the data access functions provide encapsulation of several
+ * operations required to perform a task, such as writing multiple
+ * registers to start a transfer. Finally, the CIL performs basic
+ * services that are not specific to either the host or device modes
+ * of operation. These services include management of the OTG Host
+ * Negotiation Protocol (HNP) and Session Request Protocol (SRP). A
+ * Diagnostic API is also provided to allow testing of the controller
+ * hardware.
+ *
+ * The Core Interface Layer has the following requirements:
+ * - Provides basic controller operations.
+ * - Minimal use of OS services.
+ * - The OS services used will be abstracted by using inline functions
+ * or macros.
+ *
+ */
+#include <asm/unaligned.h>
+#include <linux/dma-mapping.h>
+#ifdef DEBUG
+#include <linux/jiffies.h>
+#endif
+
+#include "linux/dwc_otg_plat.h"
+#include "dwc_otg_regs.h"
+#include "dwc_otg_cil.h"
+
+/* Included only to access hc->qh for non-dword buffer handling
+ * TODO: account it
+ */
+#include "dwc_otg_hcd.h"
+
+/**
+ * This function is called to initialize the DWC_otg CSR data
+ * structures. The register addresses in the device and host
+ * structures are initialized from the base address supplied by the
+ * caller. The calling function must make the OS calls to get the
+ * base address of the DWC_otg controller registers. The core_params
+ * argument holds the parameters that specify how the core should be
+ * configured.
+ *
+ * @param[in] reg_base_addr Base address of DWC_otg core registers
+ * @param[in] core_params Pointer to the core configuration parameters
+ *
+ */
+dwc_otg_core_if_t *dwc_otg_cil_init(const uint32_t *reg_base_addr,
+ dwc_otg_core_params_t *core_params)
+{
+ dwc_otg_core_if_t *core_if = 0;
+ dwc_otg_dev_if_t *dev_if = 0;
+ dwc_otg_host_if_t *host_if = 0;
+ uint8_t *reg_base = (uint8_t *)reg_base_addr;
+ int i = 0;
+
+ DWC_DEBUGPL(DBG_CILV, "%s(%p,%p)\n", __func__, reg_base_addr, core_params);
+
+ core_if = kmalloc(sizeof(dwc_otg_core_if_t), GFP_KERNEL);
+
+ if (core_if == 0) {
+ DWC_DEBUGPL(DBG_CIL, "Allocation of dwc_otg_core_if_t failed\n");
+ return 0;
+ }
+
+ memset(core_if, 0, sizeof(dwc_otg_core_if_t));
+
+ core_if->core_params = core_params;
+ core_if->core_global_regs = (dwc_otg_core_global_regs_t *)reg_base;
+
+ /*
+ * Allocate the Device Mode structures.
+ */
+ dev_if = kmalloc(sizeof(dwc_otg_dev_if_t), GFP_KERNEL);
+
+ if (dev_if == 0) {
+ DWC_DEBUGPL(DBG_CIL, "Allocation of dwc_otg_dev_if_t failed\n");
+ kfree(core_if);
+ return 0;
+ }
+
+ dev_if->dev_global_regs =
+ (dwc_otg_device_global_regs_t *)(reg_base + DWC_DEV_GLOBAL_REG_OFFSET);
+
+ for (i=0; i<MAX_EPS_CHANNELS; i++)
+ {
+ dev_if->in_ep_regs[i] = (dwc_otg_dev_in_ep_regs_t *)
+ (reg_base + DWC_DEV_IN_EP_REG_OFFSET +
+ (i * DWC_EP_REG_OFFSET));
+
+ dev_if->out_ep_regs[i] = (dwc_otg_dev_out_ep_regs_t *)
+ (reg_base + DWC_DEV_OUT_EP_REG_OFFSET +
+ (i * DWC_EP_REG_OFFSET));
+ DWC_DEBUGPL(DBG_CILV, "in_ep_regs[%d]->diepctl=%p\n",
+ i, &dev_if->in_ep_regs[i]->diepctl);
+ DWC_DEBUGPL(DBG_CILV, "out_ep_regs[%d]->doepctl=%p\n",
+ i, &dev_if->out_ep_regs[i]->doepctl);
+ }
+
+ dev_if->speed = 0; // unknown
+
+ core_if->dev_if = dev_if;
+
+ /*
+ * Allocate the Host Mode structures.
+ */
+ host_if = kmalloc(sizeof(dwc_otg_host_if_t), GFP_KERNEL);
+
+ if (host_if == 0) {
+ DWC_DEBUGPL(DBG_CIL, "Allocation of dwc_otg_host_if_t failed\n");
+ kfree(dev_if);
+ kfree(core_if);
+ return 0;
+ }
+
+ host_if->host_global_regs = (dwc_otg_host_global_regs_t *)
+ (reg_base + DWC_OTG_HOST_GLOBAL_REG_OFFSET);
+
+ host_if->hprt0 = (uint32_t*)(reg_base + DWC_OTG_HOST_PORT_REGS_OFFSET);
+
+ for (i=0; i<MAX_EPS_CHANNELS; i++)
+ {
+ host_if->hc_regs[i] = (dwc_otg_hc_regs_t *)
+ (reg_base + DWC_OTG_HOST_CHAN_REGS_OFFSET +
+ (i * DWC_OTG_CHAN_REGS_OFFSET));
+ DWC_DEBUGPL(DBG_CILV, "hc_reg[%d]->hcchar=%p\n",
+ i, &host_if->hc_regs[i]->hcchar);
+ }
+
+ host_if->num_host_channels = MAX_EPS_CHANNELS;
+ core_if->host_if = host_if;
+
+ for (i=0; i<MAX_EPS_CHANNELS; i++)
+ {
+ core_if->data_fifo[i] =
+ (uint32_t *)(reg_base + DWC_OTG_DATA_FIFO_OFFSET +
+ (i * DWC_OTG_DATA_FIFO_SIZE));
+ DWC_DEBUGPL(DBG_CILV, "data_fifo[%d]=0x%08x\n",
+ i, (unsigned)core_if->data_fifo[i]);
+ }
+
+ core_if->pcgcctl = (uint32_t*)(reg_base + DWC_OTG_PCGCCTL_OFFSET);
+
+ /*
+ * Store the contents of the hardware configuration registers here for
+ * easy access later.
+ */
+ core_if->hwcfg1.d32 = dwc_read_reg32(&core_if->core_global_regs->ghwcfg1);
+ core_if->hwcfg2.d32 = dwc_read_reg32(&core_if->core_global_regs->ghwcfg2);
+ core_if->hwcfg3.d32 = dwc_read_reg32(&core_if->core_global_regs->ghwcfg3);
+ core_if->hwcfg4.d32 = dwc_read_reg32(&core_if->core_global_regs->ghwcfg4);
+
+ DWC_DEBUGPL(DBG_CILV,"hwcfg1=%08x\n",core_if->hwcfg1.d32);
+ DWC_DEBUGPL(DBG_CILV,"hwcfg2=%08x\n",core_if->hwcfg2.d32);
+ DWC_DEBUGPL(DBG_CILV,"hwcfg3=%08x\n",core_if->hwcfg3.d32);
+ DWC_DEBUGPL(DBG_CILV,"hwcfg4=%08x\n",core_if->hwcfg4.d32);
+
+ core_if->hcfg.d32 = dwc_read_reg32(&core_if->host_if->host_global_regs->hcfg);
+ core_if->dcfg.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dcfg);
+
+ DWC_DEBUGPL(DBG_CILV,"hcfg=%08x\n",core_if->hcfg.d32);
+ DWC_DEBUGPL(DBG_CILV,"dcfg=%08x\n",core_if->dcfg.d32);
+
+ DWC_DEBUGPL(DBG_CILV,"op_mode=%0x\n",core_if->hwcfg2.b.op_mode);
+ DWC_DEBUGPL(DBG_CILV,"arch=%0x\n",core_if->hwcfg2.b.architecture);
+ DWC_DEBUGPL(DBG_CILV,"num_dev_ep=%d\n",core_if->hwcfg2.b.num_dev_ep);
+ DWC_DEBUGPL(DBG_CILV,"num_host_chan=%d\n",core_if->hwcfg2.b.num_host_chan);
+ DWC_DEBUGPL(DBG_CILV,"nonperio_tx_q_depth=0x%0x\n",core_if->hwcfg2.b.nonperio_tx_q_depth);
+ DWC_DEBUGPL(DBG_CILV,"host_perio_tx_q_depth=0x%0x\n",core_if->hwcfg2.b.host_perio_tx_q_depth);
+ DWC_DEBUGPL(DBG_CILV,"dev_token_q_depth=0x%0x\n",core_if->hwcfg2.b.dev_token_q_depth);
+
+ DWC_DEBUGPL(DBG_CILV,"Total FIFO SZ=%d\n", core_if->hwcfg3.b.dfifo_depth);
+ DWC_DEBUGPL(DBG_CILV,"xfer_size_cntr_width=%0x\n", core_if->hwcfg3.b.xfer_size_cntr_width);
+
+ /*
+ * Set the SRP sucess bit for FS-I2c
+ */
+ core_if->srp_success = 0;
+ core_if->srp_timer_started = 0;
+
+
+ /*
+ * Create new workqueue and init works
+ */
+ core_if->wq_otg = create_singlethread_workqueue("dwc_otg");
+ if(core_if->wq_otg == 0) {
+ DWC_DEBUGPL(DBG_CIL, "Creation of wq_otg failed\n");
+ kfree(host_if);
+ kfree(dev_if);
+ kfree(core_if);
+ return 0 * HZ;
+ }
+
+
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+
+ INIT_WORK(&core_if->w_conn_id, w_conn_id_status_change, core_if);
+ INIT_WORK(&core_if->w_wkp, w_wakeup_detected, core_if);
+
+#else
+
+ INIT_WORK(&core_if->w_conn_id, w_conn_id_status_change);
+ INIT_DELAYED_WORK(&core_if->w_wkp, w_wakeup_detected);
+
+#endif
+ return core_if;
+}
+
+/**
+ * This function frees the structures allocated by dwc_otg_cil_init().
+ *
+ * @param[in] core_if The core interface pointer returned from
+ * dwc_otg_cil_init().
+ *
+ */
+void dwc_otg_cil_remove(dwc_otg_core_if_t *core_if)
+{
+ /* Disable all interrupts */
+ dwc_modify_reg32(&core_if->core_global_regs->gahbcfg, 1, 0);
+ dwc_write_reg32(&core_if->core_global_regs->gintmsk, 0);
+
+ if (core_if->wq_otg) {
+ destroy_workqueue(core_if->wq_otg);
+ }
+ if (core_if->dev_if) {
+ kfree(core_if->dev_if);
+ }
+ if (core_if->host_if) {
+ kfree(core_if->host_if);
+ }
+ kfree(core_if);
+}
+
+/**
+ * This function enables the controller's Global Interrupt in the AHB Config
+ * register.
+ *
+ * @param[in] core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_enable_global_interrupts(dwc_otg_core_if_t *core_if)
+{
+ gahbcfg_data_t ahbcfg = { .d32 = 0};
+ ahbcfg.b.glblintrmsk = 1; /* Enable interrupts */
+ dwc_modify_reg32(&core_if->core_global_regs->gahbcfg, 0, ahbcfg.d32);
+}
+
+/**
+ * This function disables the controller's Global Interrupt in the AHB Config
+ * register.
+ *
+ * @param[in] core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_disable_global_interrupts(dwc_otg_core_if_t *core_if)
+{
+ gahbcfg_data_t ahbcfg = { .d32 = 0};
+ ahbcfg.b.glblintrmsk = 1; /* Enable interrupts */
+ dwc_modify_reg32(&core_if->core_global_regs->gahbcfg, ahbcfg.d32, 0);
+}
+
+/**
+ * This function initializes the commmon interrupts, used in both
+ * device and host modes.
+ *
+ * @param[in] core_if Programming view of the DWC_otg controller
+ *
+ */
+static void dwc_otg_enable_common_interrupts(dwc_otg_core_if_t *core_if)
+{
+ dwc_otg_core_global_regs_t *global_regs =
+ core_if->core_global_regs;
+ gintmsk_data_t intr_mask = { .d32 = 0};
+
+ /* Clear any pending OTG Interrupts */
+ dwc_write_reg32(&global_regs->gotgint, 0xFFFFFFFF);
+
+ /* Clear any pending interrupts */
+ dwc_write_reg32(&global_regs->gintsts, 0xFFFFFFFF);
+
+ /*
+ * Enable the interrupts in the GINTMSK.
+ */
+ intr_mask.b.modemismatch = 1;
+ intr_mask.b.otgintr = 1;
+
+ if (!core_if->dma_enable) {
+ intr_mask.b.rxstsqlvl = 1;
+ }
+
+ intr_mask.b.conidstschng = 1;
+ intr_mask.b.wkupintr = 1;
+ intr_mask.b.disconnect = 1;
+ intr_mask.b.usbsuspend = 1;
+ intr_mask.b.sessreqintr = 1;
+ dwc_write_reg32(&global_regs->gintmsk, intr_mask.d32);
+}
+
+/**
+ * Initializes the FSLSPClkSel field of the HCFG register depending on the PHY
+ * type.
+ */
+static void init_fslspclksel(dwc_otg_core_if_t *core_if)
+{
+ uint32_t val;
+ hcfg_data_t hcfg;
+
+ if (((core_if->hwcfg2.b.hs_phy_type == 2) &&
+ (core_if->hwcfg2.b.fs_phy_type == 1) &&
+ (core_if->core_params->ulpi_fs_ls)) ||
+ (core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) {
+ /* Full speed PHY */
+ val = DWC_HCFG_48_MHZ;
+ }
+ else {
+ /* High speed PHY running at full speed or high speed */
+ val = DWC_HCFG_30_60_MHZ;
+ }
+
+ DWC_DEBUGPL(DBG_CIL, "Initializing HCFG.FSLSPClkSel to 0x%1x\n", val);
+ hcfg.d32 = dwc_read_reg32(&core_if->host_if->host_global_regs->hcfg);
+ hcfg.b.fslspclksel = val;
+ dwc_write_reg32(&core_if->host_if->host_global_regs->hcfg, hcfg.d32);
+}
+
+/**
+ * Initializes the DevSpd field of the DCFG register depending on the PHY type
+ * and the enumeration speed of the device.
+ */
+static void init_devspd(dwc_otg_core_if_t *core_if)
+{
+ uint32_t val;
+ dcfg_data_t dcfg;
+
+ if (((core_if->hwcfg2.b.hs_phy_type == 2) &&
+ (core_if->hwcfg2.b.fs_phy_type == 1) &&
+ (core_if->core_params->ulpi_fs_ls)) ||
+ (core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) {
+ /* Full speed PHY */
+ val = 0x3;
+ }
+ else if (core_if->core_params->speed == DWC_SPEED_PARAM_FULL) {
+ /* High speed PHY running at full speed */
+ val = 0x1;
+ }
+ else {
+ /* High speed PHY running at high speed */
+ val = 0x0;
+ }
+
+ DWC_DEBUGPL(DBG_CIL, "Initializing DCFG.DevSpd to 0x%1x\n", val);
+
+ dcfg.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dcfg);
+ dcfg.b.devspd = val;
+ dwc_write_reg32(&core_if->dev_if->dev_global_regs->dcfg, dcfg.d32);
+}
+
+/**
+ * This function calculates the number of IN EPS
+ * using GHWCFG1 and GHWCFG2 registers values
+ *
+ * @param core_if Programming view of the DWC_otg controller
+ */
+static uint32_t calc_num_in_eps(dwc_otg_core_if_t *core_if)
+{
+ uint32_t num_in_eps = 0;
+ uint32_t num_eps = core_if->hwcfg2.b.num_dev_ep;
+ uint32_t hwcfg1 = core_if->hwcfg1.d32 >> 3;
+ uint32_t num_tx_fifos = core_if->hwcfg4.b.num_in_eps;
+ int i;
+
+
+ for(i = 0; i < num_eps; ++i)
+ {
+ if(!(hwcfg1 & 0x1))
+ num_in_eps++;
+
+ hwcfg1 >>= 2;
+ }
+
+ if(core_if->hwcfg4.b.ded_fifo_en) {
+ num_in_eps = (num_in_eps > num_tx_fifos) ? num_tx_fifos : num_in_eps;
+ }
+
+ return num_in_eps;
+}
+
+
+/**
+ * This function calculates the number of OUT EPS
+ * using GHWCFG1 and GHWCFG2 registers values
+ *
+ * @param core_if Programming view of the DWC_otg controller
+ */
+static uint32_t calc_num_out_eps(dwc_otg_core_if_t *core_if)
+{
+ uint32_t num_out_eps = 0;
+ uint32_t num_eps = core_if->hwcfg2.b.num_dev_ep;
+ uint32_t hwcfg1 = core_if->hwcfg1.d32 >> 2;
+ int i;
+
+ for(i = 0; i < num_eps; ++i)
+ {
+ if(!(hwcfg1 & 0x2))
+ num_out_eps++;
+
+ hwcfg1 >>= 2;
+ }
+ return num_out_eps;
+}
+/**
+ * This function initializes the DWC_otg controller registers and
+ * prepares the core for device mode or host mode operation.
+ *
+ * @param core_if Programming view of the DWC_otg controller
+ *
+ */
+void dwc_otg_core_init(dwc_otg_core_if_t *core_if)
+{
+ int i = 0;
+ dwc_otg_core_global_regs_t *global_regs =
+ core_if->core_global_regs;
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+ gahbcfg_data_t ahbcfg = { .d32 = 0 };
+ gusbcfg_data_t usbcfg = { .d32 = 0 };
+ gi2cctl_data_t i2cctl = { .d32 = 0 };
+
+ DWC_DEBUGPL(DBG_CILV, "dwc_otg_core_init(%p)\n", core_if);
+
+ /* Common Initialization */
+
+ usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg);
+
+// usbcfg.b.tx_end_delay = 1;
+ /* Program the ULPI External VBUS bit if needed */
+ usbcfg.b.ulpi_ext_vbus_drv =
+ (core_if->core_params->phy_ulpi_ext_vbus == DWC_PHY_ULPI_EXTERNAL_VBUS) ? 1 : 0;
+
+ /* Set external TS Dline pulsing */
+ usbcfg.b.term_sel_dl_pulse = (core_if->core_params->ts_dline == 1) ? 1 : 0;
+ dwc_write_reg32 (&global_regs->gusbcfg, usbcfg.d32);
+
+
+ /* Reset the Controller */
+ dwc_otg_core_reset(core_if);
+
+ /* Initialize parameters from Hardware configuration registers. */
+ dev_if->num_in_eps = calc_num_in_eps(core_if);
+ dev_if->num_out_eps = calc_num_out_eps(core_if);
+
+
+ DWC_DEBUGPL(DBG_CIL, "num_dev_perio_in_ep=%d\n", core_if->hwcfg4.b.num_dev_perio_in_ep);
+
+ for (i=0; i < core_if->hwcfg4.b.num_dev_perio_in_ep; i++)
+ {
+ dev_if->perio_tx_fifo_size[i] =
+ dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i]) >> 16;
+ DWC_DEBUGPL(DBG_CIL, "Periodic Tx FIFO SZ #%d=0x%0x\n",
+ i, dev_if->perio_tx_fifo_size[i]);
+ }
+
+ for (i=0; i < core_if->hwcfg4.b.num_in_eps; i++)
+ {
+ dev_if->tx_fifo_size[i] =
+ dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i]) >> 16;
+ DWC_DEBUGPL(DBG_CIL, "Tx FIFO SZ #%d=0x%0x\n",
+ i, dev_if->perio_tx_fifo_size[i]);
+ }
+
+ core_if->total_fifo_size = core_if->hwcfg3.b.dfifo_depth;
+ core_if->rx_fifo_size =
+ dwc_read_reg32(&global_regs->grxfsiz);
+ core_if->nperio_tx_fifo_size =
+ dwc_read_reg32(&global_regs->gnptxfsiz) >> 16;
+
+ DWC_DEBUGPL(DBG_CIL, "Total FIFO SZ=%d\n", core_if->total_fifo_size);
+ DWC_DEBUGPL(DBG_CIL, "Rx FIFO SZ=%d\n", core_if->rx_fifo_size);
+ DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO SZ=%d\n", core_if->nperio_tx_fifo_size);
+
+ /* This programming sequence needs to happen in FS mode before any other
+ * programming occurs */
+ if ((core_if->core_params->speed == DWC_SPEED_PARAM_FULL) &&
+ (core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) {
+ /* If FS mode with FS PHY */
+
+ /* core_init() is now called on every switch so only call the
+ * following for the first time through. */
+ if (!core_if->phy_init_done) {
+ core_if->phy_init_done = 1;
+ DWC_DEBUGPL(DBG_CIL, "FS_PHY detected\n");
+ usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg);
+ usbcfg.b.physel = 1;
+ dwc_write_reg32 (&global_regs->gusbcfg, usbcfg.d32);
+
+ /* Reset after a PHY select */
+ dwc_otg_core_reset(core_if);
+ }
+
+ /* Program DCFG.DevSpd or HCFG.FSLSPclkSel to 48Mhz in FS. Also
+ * do this on HNP Dev/Host mode switches (done in dev_init and
+ * host_init). */
+ if (dwc_otg_is_host_mode(core_if)) {
+ init_fslspclksel(core_if);
+ }
+ else {
+ init_devspd(core_if);
+ }
+
+ if (core_if->core_params->i2c_enable) {
+ DWC_DEBUGPL(DBG_CIL, "FS_PHY Enabling I2c\n");
+ /* Program GUSBCFG.OtgUtmifsSel to I2C */
+ usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg);
+ usbcfg.b.otgutmifssel = 1;
+ dwc_write_reg32 (&global_regs->gusbcfg, usbcfg.d32);
+
+ /* Program GI2CCTL.I2CEn */
+ i2cctl.d32 = dwc_read_reg32(&global_regs->gi2cctl);
+ i2cctl.b.i2cdevaddr = 1;
+ i2cctl.b.i2cen = 0;
+ dwc_write_reg32 (&global_regs->gi2cctl, i2cctl.d32);
+ i2cctl.b.i2cen = 1;
+ dwc_write_reg32 (&global_regs->gi2cctl, i2cctl.d32);
+ }
+
+ } /* endif speed == DWC_SPEED_PARAM_FULL */
+
+ else {
+ /* High speed PHY. */
+ if (!core_if->phy_init_done) {
+ core_if->phy_init_done = 1;
+ /* HS PHY parameters. These parameters are preserved
+ * during soft reset so only program the first time. Do
+ * a soft reset immediately after setting phyif. */
+ usbcfg.b.ulpi_utmi_sel = core_if->core_params->phy_type;
+ if (usbcfg.b.ulpi_utmi_sel == 1) {
+ /* ULPI interface */
+ usbcfg.b.phyif = 0;
+ usbcfg.b.ddrsel = core_if->core_params->phy_ulpi_ddr;
+ }
+ else {
+ /* UTMI+ interface */
+ if (core_if->core_params->phy_utmi_width == 16) {
+ usbcfg.b.phyif = 1;
+ }
+ else {
+ usbcfg.b.phyif = 0;
+ }
+ }
+
+ dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32);
+
+ /* Reset after setting the PHY parameters */
+ dwc_otg_core_reset(core_if);
+ }
+ }
+
+ if ((core_if->hwcfg2.b.hs_phy_type == 2) &&
+ (core_if->hwcfg2.b.fs_phy_type == 1) &&
+ (core_if->core_params->ulpi_fs_ls)) {
+ DWC_DEBUGPL(DBG_CIL, "Setting ULPI FSLS\n");
+ usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg);
+ usbcfg.b.ulpi_fsls = 1;
+ usbcfg.b.ulpi_clk_sus_m = 1;
+ dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32);
+ }
+ else {
+ usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg);
+ usbcfg.b.ulpi_fsls = 0;
+ usbcfg.b.ulpi_clk_sus_m = 0;
+ dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32);
+ }
+
+ /* Program the GAHBCFG Register.*/
+ switch (core_if->hwcfg2.b.architecture) {
+
+ case DWC_SLAVE_ONLY_ARCH:
+ DWC_DEBUGPL(DBG_CIL, "Slave Only Mode\n");
+ ahbcfg.b.nptxfemplvl_txfemplvl = DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY;
+ ahbcfg.b.ptxfemplvl = DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY;
+ core_if->dma_enable = 0;
+ core_if->dma_desc_enable = 0;
+ break;
+
+ case DWC_EXT_DMA_ARCH:
+ DWC_DEBUGPL(DBG_CIL, "External DMA Mode\n");
+ ahbcfg.b.hburstlen = core_if->core_params->dma_burst_size;
+ core_if->dma_enable = (core_if->core_params->dma_enable != 0);
+ core_if->dma_desc_enable = (core_if->core_params->dma_desc_enable != 0);
+ break;
+
+ case DWC_INT_DMA_ARCH:
+ DWC_DEBUGPL(DBG_CIL, "Internal DMA Mode\n");
+ ahbcfg.b.hburstlen = DWC_GAHBCFG_INT_DMA_BURST_INCR;
+ core_if->dma_enable = (core_if->core_params->dma_enable != 0);
+ core_if->dma_desc_enable = (core_if->core_params->dma_desc_enable != 0);
+ break;
+
+ }
+ ahbcfg.b.dmaenable = core_if->dma_enable;
+ dwc_write_reg32(&global_regs->gahbcfg, ahbcfg.d32);
+
+ core_if->en_multiple_tx_fifo = core_if->hwcfg4.b.ded_fifo_en;
+
+ core_if->pti_enh_enable = core_if->core_params->pti_enable != 0;
+ core_if->multiproc_int_enable = core_if->core_params->mpi_enable;
+ DWC_PRINT("Periodic Transfer Interrupt Enhancement - %s\n", ((core_if->pti_enh_enable) ? "enabled": "disabled"));
+ DWC_PRINT("Multiprocessor Interrupt Enhancement - %s\n", ((core_if->multiproc_int_enable) ? "enabled": "disabled"));
+
+ /*
+ * Program the GUSBCFG register.
+ */
+ usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg);
+
+ switch (core_if->hwcfg2.b.op_mode) {
+ case DWC_MODE_HNP_SRP_CAPABLE:
+ usbcfg.b.hnpcap = (core_if->core_params->otg_cap ==
+ DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE);
+ usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
+ DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+ break;
+
+ case DWC_MODE_SRP_ONLY_CAPABLE:
+ usbcfg.b.hnpcap = 0;
+ usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
+ DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+ break;
+
+ case DWC_MODE_NO_HNP_SRP_CAPABLE:
+ usbcfg.b.hnpcap = 0;
+ usbcfg.b.srpcap = 0;
+ break;
+
+ case DWC_MODE_SRP_CAPABLE_DEVICE:
+ usbcfg.b.hnpcap = 0;
+ usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
+ DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+ break;
+
+ case DWC_MODE_NO_SRP_CAPABLE_DEVICE:
+ usbcfg.b.hnpcap = 0;
+ usbcfg.b.srpcap = 0;
+ break;
+
+ case DWC_MODE_SRP_CAPABLE_HOST:
+ usbcfg.b.hnpcap = 0;
+ usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
+ DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
+ break;
+
+ case DWC_MODE_NO_SRP_CAPABLE_HOST:
+ usbcfg.b.hnpcap = 0;
+ usbcfg.b.srpcap = 0;
+ break;
+ }
+
+ dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32);
+
+ /* Enable common interrupts */
+ dwc_otg_enable_common_interrupts(core_if);
+
+ /* Do device or host intialization based on mode during PCD
+ * and HCD initialization */
+ if (dwc_otg_is_host_mode(core_if)) {
+ DWC_DEBUGPL(DBG_ANY, "Host Mode\n");
+ core_if->op_state = A_HOST;
+ }
+ else {
+ DWC_DEBUGPL(DBG_ANY, "Device Mode\n");
+ core_if->op_state = B_PERIPHERAL;
+#ifdef DWC_DEVICE_ONLY
+ dwc_otg_core_dev_init(core_if);
+#endif
+ }
+}
+
+
+/**
+ * This function enables the Device mode interrupts.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ */
+void dwc_otg_enable_device_interrupts(dwc_otg_core_if_t *core_if)
+{
+ gintmsk_data_t intr_mask = { .d32 = 0};
+ dwc_otg_core_global_regs_t *global_regs =
+ core_if->core_global_regs;
+
+ DWC_DEBUGPL(DBG_CIL, "%s()\n", __func__);
+
+ /* Disable all interrupts. */
+ dwc_write_reg32(&global_regs->gintmsk, 0);
+
+ /* Clear any pending interrupts */
+ dwc_write_reg32(&global_regs->gintsts, 0xFFFFFFFF);
+
+ /* Enable the common interrupts */
+ dwc_otg_enable_common_interrupts(core_if);
+
+ /* Enable interrupts */
+ intr_mask.b.usbreset = 1;
+ intr_mask.b.enumdone = 1;
+
+ if(!core_if->multiproc_int_enable) {
+ intr_mask.b.inepintr = 1;
+ intr_mask.b.outepintr = 1;
+ }
+
+ intr_mask.b.erlysuspend = 1;
+
+ if(core_if->en_multiple_tx_fifo == 0) {
+ intr_mask.b.epmismatch = 1;
+ }
+
+
+#ifdef DWC_EN_ISOC
+ if(core_if->dma_enable) {
+ if(core_if->dma_desc_enable == 0) {
+ if(core_if->pti_enh_enable) {
+ dctl_data_t dctl = { .d32 = 0 };
+ dctl.b.ifrmnum = 1;
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
+ } else {
+ intr_mask.b.incomplisoin = 1;
+ intr_mask.b.incomplisoout = 1;
+ }
+ }
+ } else {
+ intr_mask.b.incomplisoin = 1;
+ intr_mask.b.incomplisoout = 1;
+ }
+#endif // DWC_EN_ISOC
+
+/** @todo NGS: Should this be a module parameter? */
+#ifdef USE_PERIODIC_EP
+ intr_mask.b.isooutdrop = 1;
+ intr_mask.b.eopframe = 1;
+ intr_mask.b.incomplisoin = 1;
+ intr_mask.b.incomplisoout = 1;
+#endif
+
+ dwc_modify_reg32(&global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
+
+ DWC_DEBUGPL(DBG_CIL, "%s() gintmsk=%0x\n", __func__,
+ dwc_read_reg32(&global_regs->gintmsk));
+}
+
+/**
+ * This function initializes the DWC_otg controller registers for
+ * device mode.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ *
+ */
+void dwc_otg_core_dev_init(dwc_otg_core_if_t *core_if)
+{
+ int i;
+ dwc_otg_core_global_regs_t *global_regs =
+ core_if->core_global_regs;
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+ dwc_otg_core_params_t *params = core_if->core_params;
+ dcfg_data_t dcfg = { .d32 = 0};
+ grstctl_t resetctl = { .d32 = 0 };
+ uint32_t rx_fifo_size;
+ fifosize_data_t nptxfifosize;
+ fifosize_data_t txfifosize;
+ dthrctl_data_t dthrctl;
+ fifosize_data_t ptxfifosize;
+
+ /* Restart the Phy Clock */
+ dwc_write_reg32(core_if->pcgcctl, 0);
+
+ /* Device configuration register */
+ init_devspd(core_if);
+ dcfg.d32 = dwc_read_reg32(&dev_if->dev_global_regs->dcfg);
+ dcfg.b.descdma = (core_if->dma_desc_enable) ? 1 : 0;
+ dcfg.b.perfrint = DWC_DCFG_FRAME_INTERVAL_80;
+
+ dwc_write_reg32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+ /* Configure data FIFO sizes */
+ if (core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) {
+ DWC_DEBUGPL(DBG_CIL, "Total FIFO Size=%d\n", core_if->total_fifo_size);
+ DWC_DEBUGPL(DBG_CIL, "Rx FIFO Size=%d\n", params->dev_rx_fifo_size);
+ DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO Size=%d\n", params->dev_nperio_tx_fifo_size);
+
+ /* Rx FIFO */
+ DWC_DEBUGPL(DBG_CIL, "initial grxfsiz=%08x\n",
+ dwc_read_reg32(&global_regs->grxfsiz));
+
+ rx_fifo_size = params->dev_rx_fifo_size;
+ dwc_write_reg32(&global_regs->grxfsiz, rx_fifo_size);
+
+ DWC_DEBUGPL(DBG_CIL, "new grxfsiz=%08x\n",
+ dwc_read_reg32(&global_regs->grxfsiz));
+
+ /** Set Periodic Tx FIFO Mask all bits 0 */
+ core_if->p_tx_msk = 0;
+
+ /** Set Tx FIFO Mask all bits 0 */
+ core_if->tx_msk = 0;
+
+ if(core_if->en_multiple_tx_fifo == 0) {
+ /* Non-periodic Tx FIFO */
+ DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n",
+ dwc_read_reg32(&global_regs->gnptxfsiz));
+
+ nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size;
+ nptxfifosize.b.startaddr = params->dev_rx_fifo_size;
+
+ dwc_write_reg32(&global_regs->gnptxfsiz, nptxfifosize.d32);
+
+ DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n",
+ dwc_read_reg32(&global_regs->gnptxfsiz));
+
+ /**@todo NGS: Fix Periodic FIFO Sizing! */
+ /*
+ * Periodic Tx FIFOs These FIFOs are numbered from 1 to 15.
+ * Indexes of the FIFO size module parameters in the
+ * dev_perio_tx_fifo_size array and the FIFO size registers in
+ * the dptxfsiz array run from 0 to 14.
+ */
+ /** @todo Finish debug of this */
+ ptxfifosize.b.startaddr = nptxfifosize.b.startaddr + nptxfifosize.b.depth;
+ for (i=0; i < core_if->hwcfg4.b.num_dev_perio_in_ep; i++)
+ {
+ ptxfifosize.b.depth = params->dev_perio_tx_fifo_size[i];
+ DWC_DEBUGPL(DBG_CIL, "initial dptxfsiz_dieptxf[%d]=%08x\n", i,
+ dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i]));
+ dwc_write_reg32(&global_regs->dptxfsiz_dieptxf[i],
+ ptxfifosize.d32);
+ DWC_DEBUGPL(DBG_CIL, "new dptxfsiz_dieptxf[%d]=%08x\n", i,
+ dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i]));
+ ptxfifosize.b.startaddr += ptxfifosize.b.depth;
+ }
+ }
+ else {
+ /*
+ * Tx FIFOs These FIFOs are numbered from 1 to 15.
+ * Indexes of the FIFO size module parameters in the
+ * dev_tx_fifo_size array and the FIFO size registers in
+ * the dptxfsiz_dieptxf array run from 0 to 14.
+ */
+
+
+ /* Non-periodic Tx FIFO */
+ DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n",
+ dwc_read_reg32(&global_regs->gnptxfsiz));
+
+ nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size;
+ nptxfifosize.b.startaddr = params->dev_rx_fifo_size;
+
+ dwc_write_reg32(&global_regs->gnptxfsiz, nptxfifosize.d32);
+
+ DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n",
+ dwc_read_reg32(&global_regs->gnptxfsiz));
+
+ txfifosize.b.startaddr = nptxfifosize.b.startaddr + nptxfifosize.b.depth;
+ /*
+ Modify by kaiker ,for RT3052 device mode config
+
+ In RT3052,Since the _core_if->hwcfg4.b.num_dev_perio_in_ep is
+ configed to 0 so these TX_FIF0 not config.IN EP will can't
+ more than 1 if not modify it.
+
+ */
+#if 1
+ for (i=1 ; i <= dev_if->num_in_eps; i++)
+#else
+ for (i=1; i < _core_if->hwcfg4.b.num_dev_perio_in_ep; i++)
+#endif
+ {
+
+ txfifosize.b.depth = params->dev_tx_fifo_size[i];
+
+ DWC_DEBUGPL(DBG_CIL, "initial dptxfsiz_dieptxf[%d]=%08x\n", i,
+ dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i]));
+
+ dwc_write_reg32(&global_regs->dptxfsiz_dieptxf[i-1],
+ txfifosize.d32);
+
+ DWC_DEBUGPL(DBG_CIL, "new dptxfsiz_dieptxf[%d]=%08x\n", i,
+ dwc_read_reg32(&global_regs->dptxfsiz_dieptxf[i-1]));
+
+ txfifosize.b.startaddr += txfifosize.b.depth;
+ }
+ }
+ }
+ /* Flush the FIFOs */
+ dwc_otg_flush_tx_fifo(core_if, 0x10); /* all Tx FIFOs */
+ dwc_otg_flush_rx_fifo(core_if);
+
+ /* Flush the Learning Queue. */
+ resetctl.b.intknqflsh = 1;
+ dwc_write_reg32(&core_if->core_global_regs->grstctl, resetctl.d32);
+
+ /* Clear all pending Device Interrupts */
+
+ if(core_if->multiproc_int_enable) {
+ }
+
+ /** @todo - if the condition needed to be checked
+ * or in any case all pending interrutps should be cleared?
+ */
+ if(core_if->multiproc_int_enable) {
+ for(i = 0; i < core_if->dev_if->num_in_eps; ++i) {
+ dwc_write_reg32(&dev_if->dev_global_regs->diepeachintmsk[i], 0);
+ }
+
+ for(i = 0; i < core_if->dev_if->num_out_eps; ++i) {
+ dwc_write_reg32(&dev_if->dev_global_regs->doepeachintmsk[i], 0);
+ }
+
+ dwc_write_reg32(&dev_if->dev_global_regs->deachint, 0xFFFFFFFF);
+ dwc_write_reg32(&dev_if->dev_global_regs->deachintmsk, 0);
+ } else {
+ dwc_write_reg32(&dev_if->dev_global_regs->diepmsk, 0);
+ dwc_write_reg32(&dev_if->dev_global_regs->doepmsk, 0);
+ dwc_write_reg32(&dev_if->dev_global_regs->daint, 0xFFFFFFFF);
+ dwc_write_reg32(&dev_if->dev_global_regs->daintmsk, 0);
+ }
+
+ for (i=0; i <= dev_if->num_in_eps; i++)
+ {
+ depctl_data_t depctl;
+ depctl.d32 = dwc_read_reg32(&dev_if->in_ep_regs[i]->diepctl);
+ if (depctl.b.epena) {
+ depctl.d32 = 0;
+ depctl.b.epdis = 1;
+ depctl.b.snak = 1;
+ }
+ else {
+ depctl.d32 = 0;
+ }
+
+ dwc_write_reg32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32);
+
+
+ dwc_write_reg32(&dev_if->in_ep_regs[i]->dieptsiz, 0);
+ dwc_write_reg32(&dev_if->in_ep_regs[i]->diepdma, 0);
+ dwc_write_reg32(&dev_if->in_ep_regs[i]->diepint, 0xFF);
+ }
+
+ for (i=0; i <= dev_if->num_out_eps; i++)
+ {
+ depctl_data_t depctl;
+ depctl.d32 = dwc_read_reg32(&dev_if->out_ep_regs[i]->doepctl);
+ if (depctl.b.epena) {
+ depctl.d32 = 0;
+ depctl.b.epdis = 1;
+ depctl.b.snak = 1;
+ }
+ else {
+ depctl.d32 = 0;
+ }
+
+ dwc_write_reg32(&dev_if->out_ep_regs[i]->doepctl, depctl.d32);
+
+ dwc_write_reg32(&dev_if->out_ep_regs[i]->doeptsiz, 0);
+ dwc_write_reg32(&dev_if->out_ep_regs[i]->doepdma, 0);
+ dwc_write_reg32(&dev_if->out_ep_regs[i]->doepint, 0xFF);
+ }
+
+ if(core_if->en_multiple_tx_fifo && core_if->dma_enable) {
+ dev_if->non_iso_tx_thr_en = params->thr_ctl & 0x1;
+ dev_if->iso_tx_thr_en = (params->thr_ctl >> 1) & 0x1;
+ dev_if->rx_thr_en = (params->thr_ctl >> 2) & 0x1;
+
+ dev_if->rx_thr_length = params->rx_thr_length;
+ dev_if->tx_thr_length = params->tx_thr_length;
+
+ dev_if->setup_desc_index = 0;
+
+ dthrctl.d32 = 0;
+ dthrctl.b.non_iso_thr_en = dev_if->non_iso_tx_thr_en;
+ dthrctl.b.iso_thr_en = dev_if->iso_tx_thr_en;
+ dthrctl.b.tx_thr_len = dev_if->tx_thr_length;
+ dthrctl.b.rx_thr_en = dev_if->rx_thr_en;
+ dthrctl.b.rx_thr_len = dev_if->rx_thr_length;
+
+ dwc_write_reg32(&dev_if->dev_global_regs->dtknqr3_dthrctl, dthrctl.d32);
+
+ DWC_DEBUGPL(DBG_CIL, "Non ISO Tx Thr - %d\nISO Tx Thr - %d\nRx Thr - %d\nTx Thr Len - %d\nRx Thr Len - %d\n",
+ dthrctl.b.non_iso_thr_en, dthrctl.b.iso_thr_en, dthrctl.b.rx_thr_en, dthrctl.b.tx_thr_len, dthrctl.b.rx_thr_len);
+
+ }
+
+ dwc_otg_enable_device_interrupts(core_if);
+
+ {
+ diepmsk_data_t msk = { .d32 = 0 };
+ msk.b.txfifoundrn = 1;
+ if(core_if->multiproc_int_enable) {
+ dwc_modify_reg32(&dev_if->dev_global_regs->diepeachintmsk[0], msk.d32, msk.d32);
+ } else {
+ dwc_modify_reg32(&dev_if->dev_global_regs->diepmsk, msk.d32, msk.d32);
+ }
+ }
+
+
+ if(core_if->multiproc_int_enable) {
+ /* Set NAK on Babble */
+ dctl_data_t dctl = { .d32 = 0};
+ dctl.b.nakonbble = 1;
+ dwc_modify_reg32(&dev_if->dev_global_regs->dctl, 0, dctl.d32);
+ }
+}
+
+/**
+ * This function enables the Host mode interrupts.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ */
+void dwc_otg_enable_host_interrupts(dwc_otg_core_if_t *core_if)
+{
+ dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+ gintmsk_data_t intr_mask = { .d32 = 0 };
+
+ DWC_DEBUGPL(DBG_CIL, "%s()\n", __func__);
+
+ /* Disable all interrupts. */
+ dwc_write_reg32(&global_regs->gintmsk, 0);
+
+ /* Clear any pending interrupts. */
+ dwc_write_reg32(&global_regs->gintsts, 0xFFFFFFFF);
+
+ /* Enable the common interrupts */
+ dwc_otg_enable_common_interrupts(core_if);
+
+ /*
+ * Enable host mode interrupts without disturbing common
+ * interrupts.
+ */
+ intr_mask.b.sofintr = 1;
+ intr_mask.b.portintr = 1;
+ intr_mask.b.hcintr = 1;
+
+ dwc_modify_reg32(&global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
+}
+
+/**
+ * This function disables the Host Mode interrupts.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ */
+void dwc_otg_disable_host_interrupts(dwc_otg_core_if_t *core_if)
+{
+ dwc_otg_core_global_regs_t *global_regs =
+ core_if->core_global_regs;
+ gintmsk_data_t intr_mask = { .d32 = 0 };
+
+ DWC_DEBUGPL(DBG_CILV, "%s()\n", __func__);
+
+ /*
+ * Disable host mode interrupts without disturbing common
+ * interrupts.
+ */
+ intr_mask.b.sofintr = 1;
+ intr_mask.b.portintr = 1;
+ intr_mask.b.hcintr = 1;
+ intr_mask.b.ptxfempty = 1;
+ intr_mask.b.nptxfempty = 1;
+
+ dwc_modify_reg32(&global_regs->gintmsk, intr_mask.d32, 0);
+}
+
+/**
+ * This function initializes the DWC_otg controller registers for
+ * host mode.
+ *
+ * This function flushes the Tx and Rx FIFOs and it flushes any entries in the
+ * request queues. Host channels are reset to ensure that they are ready for
+ * performing transfers.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ *
+ */
+void dwc_otg_core_host_init(dwc_otg_core_if_t *core_if)
+{
+ dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+ dwc_otg_host_if_t *host_if = core_if->host_if;
+ dwc_otg_core_params_t *params = core_if->core_params;
+ hprt0_data_t hprt0 = { .d32 = 0 };
+ fifosize_data_t nptxfifosize;
+ fifosize_data_t ptxfifosize;
+ int i;
+ hcchar_data_t hcchar;
+ hcfg_data_t hcfg;
+ dwc_otg_hc_regs_t *hc_regs;
+ int num_channels;
+ gotgctl_data_t gotgctl = { .d32 = 0 };
+
+ DWC_DEBUGPL(DBG_CILV,"%s(%p)\n", __func__, core_if);
+
+ /* Restart the Phy Clock */
+ dwc_write_reg32(core_if->pcgcctl, 0);
+
+ /* Initialize Host Configuration Register */
+ init_fslspclksel(core_if);
+ if (core_if->core_params->speed == DWC_SPEED_PARAM_FULL)
+ {
+ hcfg.d32 = dwc_read_reg32(&host_if->host_global_regs->hcfg);
+ hcfg.b.fslssupp = 1;
+ dwc_write_reg32(&host_if->host_global_regs->hcfg, hcfg.d32);
+ }
+
+ /* Configure data FIFO sizes */
+ if (core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) {
+ DWC_DEBUGPL(DBG_CIL,"Total FIFO Size=%d\n", core_if->total_fifo_size);
+ DWC_DEBUGPL(DBG_CIL,"Rx FIFO Size=%d\n", params->host_rx_fifo_size);
+ DWC_DEBUGPL(DBG_CIL,"NP Tx FIFO Size=%d\n", params->host_nperio_tx_fifo_size);
+ DWC_DEBUGPL(DBG_CIL,"P Tx FIFO Size=%d\n", params->host_perio_tx_fifo_size);
+
+ /* Rx FIFO */
+ DWC_DEBUGPL(DBG_CIL,"initial grxfsiz=%08x\n", dwc_read_reg32(&global_regs->grxfsiz));
+ dwc_write_reg32(&global_regs->grxfsiz, params->host_rx_fifo_size);
+ DWC_DEBUGPL(DBG_CIL,"new grxfsiz=%08x\n", dwc_read_reg32(&global_regs->grxfsiz));
+
+ /* Non-periodic Tx FIFO */
+ DWC_DEBUGPL(DBG_CIL,"initial gnptxfsiz=%08x\n", dwc_read_reg32(&global_regs->gnptxfsiz));
+ nptxfifosize.b.depth = params->host_nperio_tx_fifo_size;
+ nptxfifosize.b.startaddr = params->host_rx_fifo_size;
+ dwc_write_reg32(&global_regs->gnptxfsiz, nptxfifosize.d32);
+ DWC_DEBUGPL(DBG_CIL,"new gnptxfsiz=%08x\n", dwc_read_reg32(&global_regs->gnptxfsiz));
+
+ /* Periodic Tx FIFO */
+ DWC_DEBUGPL(DBG_CIL,"initial hptxfsiz=%08x\n", dwc_read_reg32(&global_regs->hptxfsiz));
+ ptxfifosize.b.depth = params->host_perio_tx_fifo_size;
+ ptxfifosize.b.startaddr = nptxfifosize.b.startaddr + nptxfifosize.b.depth;
+ dwc_write_reg32(&global_regs->hptxfsiz, ptxfifosize.d32);
+ DWC_DEBUGPL(DBG_CIL,"new hptxfsiz=%08x\n", dwc_read_reg32(&global_regs->hptxfsiz));
+ }
+
+ /* Clear Host Set HNP Enable in the OTG Control Register */
+ gotgctl.b.hstsethnpen = 1;
+ dwc_modify_reg32(&global_regs->gotgctl, gotgctl.d32, 0);
+
+ /* Make sure the FIFOs are flushed. */
+ dwc_otg_flush_tx_fifo(core_if, 0x10 /* all Tx FIFOs */);
+ dwc_otg_flush_rx_fifo(core_if);
+
+ /* Flush out any leftover queued requests. */
+ num_channels = core_if->core_params->host_channels;
+ for (i = 0; i < num_channels; i++)
+ {
+ hc_regs = core_if->host_if->hc_regs[i];
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ hcchar.b.chen = 0;
+ hcchar.b.chdis = 1;
+ hcchar.b.epdir = 0;
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+ }
+
+ /* Halt all channels to put them into a known state. */
+ for (i = 0; i < num_channels; i++)
+ {
+ int count = 0;
+ hc_regs = core_if->host_if->hc_regs[i];
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ hcchar.b.chen = 1;
+ hcchar.b.chdis = 1;
+ hcchar.b.epdir = 0;
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+ DWC_DEBUGPL(DBG_HCDV, "%s: Halt channel %d\n", __func__, i);
+ do {
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ if (++count > 1000)
+ {
+ DWC_ERROR("%s: Unable to clear halt on channel %d\n",
+ __func__, i);
+ break;
+ }
+ }
+ while (hcchar.b.chen);
+ }
+
+ /* Turn on the vbus power. */
+ DWC_PRINT("Init: Port Power? op_state=%d\n", core_if->op_state);
+ if (core_if->op_state == A_HOST) {
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ DWC_PRINT("Init: Power Port (%d)\n", hprt0.b.prtpwr);
+ if (hprt0.b.prtpwr == 0) {
+ hprt0.b.prtpwr = 1;
+ dwc_write_reg32(host_if->hprt0, hprt0.d32);
+ }
+ }
+
+ dwc_otg_enable_host_interrupts(core_if);
+}
+
+/**
+ * Prepares a host channel for transferring packets to/from a specific
+ * endpoint. The HCCHARn register is set up with the characteristics specified
+ * in _hc. Host channel interrupts that may need to be serviced while this
+ * transfer is in progress are enabled.
+ *
+ * @param core_if Programming view of DWC_otg controller
+ * @param hc Information needed to initialize the host channel
+ */
+void dwc_otg_hc_init(dwc_otg_core_if_t *core_if, dwc_hc_t *hc)
+{
+ uint32_t intr_enable;
+ hcintmsk_data_t hc_intr_mask;
+ gintmsk_data_t gintmsk = { .d32 = 0 };
+ hcchar_data_t hcchar;
+ hcsplt_data_t hcsplt;
+
+ uint8_t hc_num = hc->hc_num;
+ dwc_otg_host_if_t *host_if = core_if->host_if;
+ dwc_otg_hc_regs_t *hc_regs = host_if->hc_regs[hc_num];
+
+ /* Clear old interrupt conditions for this host channel. */
+ hc_intr_mask.d32 = 0xFFFFFFFF;
+ hc_intr_mask.b.reserved = 0;
+ dwc_write_reg32(&hc_regs->hcint, hc_intr_mask.d32);
+
+ /* Enable channel interrupts required for this transfer. */
+ hc_intr_mask.d32 = 0;
+ hc_intr_mask.b.chhltd = 1;
+ if (core_if->dma_enable) {
+ hc_intr_mask.b.ahberr = 1;
+ if (hc->error_state && !hc->do_split &&
+ hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
+ hc_intr_mask.b.ack = 1;
+ if (hc->ep_is_in) {
+ hc_intr_mask.b.datatglerr = 1;
+ if (hc->ep_type != DWC_OTG_EP_TYPE_INTR) {
+ hc_intr_mask.b.nak = 1;
+ }
+ }
+ }
+ }
+ else {
+ switch (hc->ep_type) {
+ case DWC_OTG_EP_TYPE_CONTROL:
+ case DWC_OTG_EP_TYPE_BULK:
+ hc_intr_mask.b.xfercompl = 1;
+ hc_intr_mask.b.stall = 1;
+ hc_intr_mask.b.xacterr = 1;
+ hc_intr_mask.b.datatglerr = 1;
+ if (hc->ep_is_in) {
+ hc_intr_mask.b.bblerr = 1;
+ }
+ else {
+ hc_intr_mask.b.nak = 1;
+ hc_intr_mask.b.nyet = 1;
+ if (hc->do_ping) {
+ hc_intr_mask.b.ack = 1;
+ }
+ }
+
+ if (hc->do_split) {
+ hc_intr_mask.b.nak = 1;
+ if (hc->complete_split) {
+ hc_intr_mask.b.nyet = 1;
+ }
+ else {
+ hc_intr_mask.b.ack = 1;
+ }
+ }
+
+ if (hc->error_state) {
+ hc_intr_mask.b.ack = 1;
+ }
+ break;
+ case DWC_OTG_EP_TYPE_INTR:
+ hc_intr_mask.b.xfercompl = 1;
+ hc_intr_mask.b.nak = 1;
+ hc_intr_mask.b.stall = 1;
+ hc_intr_mask.b.xacterr = 1;
+ hc_intr_mask.b.datatglerr = 1;
+ hc_intr_mask.b.frmovrun = 1;
+
+ if (hc->ep_is_in) {
+ hc_intr_mask.b.bblerr = 1;
+ }
+ if (hc->error_state) {
+ hc_intr_mask.b.ack = 1;
+ }
+ if (hc->do_split) {
+ if (hc->complete_split) {
+ hc_intr_mask.b.nyet = 1;
+ }
+ else {
+ hc_intr_mask.b.ack = 1;
+ }
+ }
+ break;
+ case DWC_OTG_EP_TYPE_ISOC:
+ hc_intr_mask.b.xfercompl = 1;
+ hc_intr_mask.b.frmovrun = 1;
+ hc_intr_mask.b.ack = 1;
+
+ if (hc->ep_is_in) {
+ hc_intr_mask.b.xacterr = 1;
+ hc_intr_mask.b.bblerr = 1;
+ }
+ break;
+ }
+ }
+ dwc_write_reg32(&hc_regs->hcintmsk, hc_intr_mask.d32);
+
+// if(hc->ep_type == DWC_OTG_EP_TYPE_BULK && !hc->ep_is_in)
+// hc->max_packet = 512;
+ /* Enable the top level host channel interrupt. */
+ intr_enable = (1 << hc_num);
+ dwc_modify_reg32(&host_if->host_global_regs->haintmsk, 0, intr_enable);
+
+ /* Make sure host channel interrupts are enabled. */
+ gintmsk.b.hcintr = 1;
+ dwc_modify_reg32(&core_if->core_global_regs->gintmsk, 0, gintmsk.d32);
+
+ /*
+ * Program the HCCHARn register with the endpoint characteristics for
+ * the current transfer.
+ */
+ hcchar.d32 = 0;
+ hcchar.b.devaddr = hc->dev_addr;
+ hcchar.b.epnum = hc->ep_num;
+ hcchar.b.epdir = hc->ep_is_in;
+ hcchar.b.lspddev = (hc->speed == DWC_OTG_EP_SPEED_LOW);
+ hcchar.b.eptype = hc->ep_type;
+ hcchar.b.mps = hc->max_packet;
+
+ dwc_write_reg32(&host_if->hc_regs[hc_num]->hcchar, hcchar.d32);
+
+ DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+ DWC_DEBUGPL(DBG_HCDV, " Dev Addr: %d\n", hcchar.b.devaddr);
+ DWC_DEBUGPL(DBG_HCDV, " Ep Num: %d\n", hcchar.b.epnum);
+ DWC_DEBUGPL(DBG_HCDV, " Is In: %d\n", hcchar.b.epdir);
+ DWC_DEBUGPL(DBG_HCDV, " Is Low Speed: %d\n", hcchar.b.lspddev);
+ DWC_DEBUGPL(DBG_HCDV, " Ep Type: %d\n", hcchar.b.eptype);
+ DWC_DEBUGPL(DBG_HCDV, " Max Pkt: %d\n", hcchar.b.mps);
+ DWC_DEBUGPL(DBG_HCDV, " Multi Cnt: %d\n", hcchar.b.multicnt);
+
+ /*
+ * Program the HCSPLIT register for SPLITs
+ */
+ hcsplt.d32 = 0;
+ if (hc->do_split) {
+ DWC_DEBUGPL(DBG_HCDV, "Programming HC %d with split --> %s\n", hc->hc_num,
+ hc->complete_split ? "CSPLIT" : "SSPLIT");
+ hcsplt.b.compsplt = hc->complete_split;
+ hcsplt.b.xactpos = hc->xact_pos;
+ hcsplt.b.hubaddr = hc->hub_addr;
+ hcsplt.b.prtaddr = hc->port_addr;
+ DWC_DEBUGPL(DBG_HCDV, " comp split %d\n", hc->complete_split);
+ DWC_DEBUGPL(DBG_HCDV, " xact pos %d\n", hc->xact_pos);
+ DWC_DEBUGPL(DBG_HCDV, " hub addr %d\n", hc->hub_addr);
+ DWC_DEBUGPL(DBG_HCDV, " port addr %d\n", hc->port_addr);
+ DWC_DEBUGPL(DBG_HCDV, " is_in %d\n", hc->ep_is_in);
+ DWC_DEBUGPL(DBG_HCDV, " Max Pkt: %d\n", hcchar.b.mps);
+ DWC_DEBUGPL(DBG_HCDV, " xferlen: %d\n", hc->xfer_len);
+ }
+ dwc_write_reg32(&host_if->hc_regs[hc_num]->hcsplt, hcsplt.d32);
+
+}
+
+/**
+ * Attempts to halt a host channel. This function should only be called in
+ * Slave mode or to abort a transfer in either Slave mode or DMA mode. Under
+ * normal circumstances in DMA mode, the controller halts the channel when the
+ * transfer is complete or a condition occurs that requires application
+ * intervention.
+ *
+ * In slave mode, checks for a free request queue entry, then sets the Channel
+ * Enable and Channel Disable bits of the Host Channel Characteristics
+ * register of the specified channel to intiate the halt. If there is no free
+ * request queue entry, sets only the Channel Disable bit of the HCCHARn
+ * register to flush requests for this channel. In the latter case, sets a
+ * flag to indicate that the host channel needs to be halted when a request
+ * queue slot is open.
+ *
+ * In DMA mode, always sets the Channel Enable and Channel Disable bits of the
+ * HCCHARn register. The controller ensures there is space in the request
+ * queue before submitting the halt request.
+ *
+ * Some time may elapse before the core flushes any posted requests for this
+ * host channel and halts. The Channel Halted interrupt handler completes the
+ * deactivation of the host channel.
+ *
+ * @param core_if Controller register interface.
+ * @param hc Host channel to halt.
+ * @param halt_status Reason for halting the channel.
+ */
+void dwc_otg_hc_halt(dwc_otg_core_if_t *core_if,
+ dwc_hc_t *hc,
+ dwc_otg_halt_status_e halt_status)
+{
+ gnptxsts_data_t nptxsts;
+ hptxsts_data_t hptxsts;
+ hcchar_data_t hcchar;
+ dwc_otg_hc_regs_t *hc_regs;
+ dwc_otg_core_global_regs_t *global_regs;
+ dwc_otg_host_global_regs_t *host_global_regs;
+
+ hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+ global_regs = core_if->core_global_regs;
+ host_global_regs = core_if->host_if->host_global_regs;
+
+ WARN_ON(halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS);
+
+ if (halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE ||
+ halt_status == DWC_OTG_HC_XFER_AHB_ERR) {
+ /*
+ * Disable all channel interrupts except Ch Halted. The QTD
+ * and QH state associated with this transfer has been cleared
+ * (in the case of URB_DEQUEUE), so the channel needs to be
+ * shut down carefully to prevent crashes.
+ */
+ hcintmsk_data_t hcintmsk;
+ hcintmsk.d32 = 0;
+ hcintmsk.b.chhltd = 1;
+ dwc_write_reg32(&hc_regs->hcintmsk, hcintmsk.d32);
+
+ /*
+ * Make sure no other interrupts besides halt are currently
+ * pending. Handling another interrupt could cause a crash due
+ * to the QTD and QH state.
+ */
+ dwc_write_reg32(&hc_regs->hcint, ~hcintmsk.d32);
+
+ /*
+ * Make sure the halt status is set to URB_DEQUEUE or AHB_ERR
+ * even if the channel was already halted for some other
+ * reason.
+ */
+ hc->halt_status = halt_status;
+
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ if (hcchar.b.chen == 0) {
+ /*
+ * The channel is either already halted or it hasn't
+ * started yet. In DMA mode, the transfer may halt if
+ * it finishes normally or a condition occurs that
+ * requires driver intervention. Don't want to halt
+ * the channel again. In either Slave or DMA mode,
+ * it's possible that the transfer has been assigned
+ * to a channel, but not started yet when an URB is
+ * dequeued. Don't want to halt a channel that hasn't
+ * started yet.
+ */
+ return;
+ }
+ }
+
+ if (hc->halt_pending) {
+ /*
+ * A halt has already been issued for this channel. This might
+ * happen when a transfer is aborted by a higher level in
+ * the stack.
+ */
+#ifdef DEBUG
+ DWC_PRINT("*** %s: Channel %d, _hc->halt_pending already set ***\n",
+ __func__, hc->hc_num);
+
+/* dwc_otg_dump_global_registers(core_if); */
+/* dwc_otg_dump_host_registers(core_if); */
+#endif
+ return;
+ }
+
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ hcchar.b.chen = 1;
+ hcchar.b.chdis = 1;
+
+ if (!core_if->dma_enable) {
+ /* Check for space in the request queue to issue the halt. */
+ if (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
+ hc->ep_type == DWC_OTG_EP_TYPE_BULK) {
+ nptxsts.d32 = dwc_read_reg32(&global_regs->gnptxsts);
+ if (nptxsts.b.nptxqspcavail == 0) {
+ hcchar.b.chen = 0;
+ }
+ }
+ else {
+ hptxsts.d32 = dwc_read_reg32(&host_global_regs->hptxsts);
+ if ((hptxsts.b.ptxqspcavail == 0) || (core_if->queuing_high_bandwidth)) {
+ hcchar.b.chen = 0;
+ }
+ }
+ }
+
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+
+ hc->halt_status = halt_status;
+
+ if (hcchar.b.chen) {
+ hc->halt_pending = 1;
+ hc->halt_on_queue = 0;
+ }
+ else {
+ hc->halt_on_queue = 1;
+ }
+
+ DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+ DWC_DEBUGPL(DBG_HCDV, " hcchar: 0x%08x\n", hcchar.d32);
+ DWC_DEBUGPL(DBG_HCDV, " halt_pending: %d\n", hc->halt_pending);
+ DWC_DEBUGPL(DBG_HCDV, " halt_on_queue: %d\n", hc->halt_on_queue);
+ DWC_DEBUGPL(DBG_HCDV, " halt_status: %d\n", hc->halt_status);
+
+ return;
+}
+
+/**
+ * Clears the transfer state for a host channel. This function is normally
+ * called after a transfer is done and the host channel is being released.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param hc Identifies the host channel to clean up.
+ */
+void dwc_otg_hc_cleanup(dwc_otg_core_if_t *core_if, dwc_hc_t *hc)
+{
+ dwc_otg_hc_regs_t *hc_regs;
+
+ hc->xfer_started = 0;
+
+ /*
+ * Clear channel interrupt enables and any unhandled channel interrupt
+ * conditions.
+ */
+ hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+ dwc_write_reg32(&hc_regs->hcintmsk, 0);
+ dwc_write_reg32(&hc_regs->hcint, 0xFFFFFFFF);
+
+#ifdef DEBUG
+ del_timer(&core_if->hc_xfer_timer[hc->hc_num]);
+ {
+ hcchar_data_t hcchar;
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ if (hcchar.b.chdis) {
+ DWC_WARN("%s: chdis set, channel %d, hcchar 0x%08x\n",
+ __func__, hc->hc_num, hcchar.d32);
+ }
+ }
+#endif
+}
+
+/**
+ * Sets the channel property that indicates in which frame a periodic transfer
+ * should occur. This is always set to the _next_ frame. This function has no
+ * effect on non-periodic transfers.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param hc Identifies the host channel to set up and its properties.
+ * @param hcchar Current value of the HCCHAR register for the specified host
+ * channel.
+ */
+static inline void hc_set_even_odd_frame(dwc_otg_core_if_t *core_if,
+ dwc_hc_t *hc,
+ hcchar_data_t *hcchar)
+{
+ if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+ hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+ hfnum_data_t hfnum;
+ hfnum.d32 = dwc_read_reg32(&core_if->host_if->host_global_regs->hfnum);
+
+ /* 1 if _next_ frame is odd, 0 if it's even */
+ hcchar->b.oddfrm = (hfnum.b.frnum & 0x1) ? 0 : 1;
+#ifdef DEBUG
+ if (hc->ep_type == DWC_OTG_EP_TYPE_INTR && hc->do_split && !hc->complete_split) {
+ switch (hfnum.b.frnum & 0x7) {
+ case 7:
+ core_if->hfnum_7_samples++;
+ core_if->hfnum_7_frrem_accum += hfnum.b.frrem;
+ break;
+ case 0:
+ core_if->hfnum_0_samples++;
+ core_if->hfnum_0_frrem_accum += hfnum.b.frrem;
+ break;
+ default:
+ core_if->hfnum_other_samples++;
+ core_if->hfnum_other_frrem_accum += hfnum.b.frrem;
+ break;
+ }
+ }
+#endif
+ }
+}
+
+#ifdef DEBUG
+static void hc_xfer_timeout(unsigned long ptr)
+{
+ hc_xfer_info_t *xfer_info = (hc_xfer_info_t *)ptr;
+ int hc_num = xfer_info->hc->hc_num;
+ DWC_WARN("%s: timeout on channel %d\n", __func__, hc_num);
+ DWC_WARN(" start_hcchar_val 0x%08x\n", xfer_info->core_if->start_hcchar_val[hc_num]);
+}
+#endif
+
+/*
+ * This function does the setup for a data transfer for a host channel and
+ * starts the transfer. May be called in either Slave mode or DMA mode. In
+ * Slave mode, the caller must ensure that there is sufficient space in the
+ * request queue and Tx Data FIFO.
+ *
+ * For an OUT transfer in Slave mode, it loads a data packet into the
+ * appropriate FIFO. If necessary, additional data packets will be loaded in
+ * the Host ISR.
+ *
+ * For an IN transfer in Slave mode, a data packet is requested. The data
+ * packets are unloaded from the Rx FIFO in the Host ISR. If necessary,
+ * additional data packets are requested in the Host ISR.
+ *
+ * For a PING transfer in Slave mode, the Do Ping bit is set in the egards,
+ *
+ * Steven
+ *
+ * register along with a packet count of 1 and the channel is enabled. This
+ * causes a single PING transaction to occur. Other fields in HCTSIZ are
+ * simply set to 0 since no data transfer occurs in this case.
+ *
+ * For a PING transfer in DMA mode, the HCTSIZ register is initialized with
+ * all the information required to perform the subsequent data transfer. In
+ * addition, the Do Ping bit is set in the HCTSIZ register. In this case, the
+ * controller performs the entire PING protocol, then starts the data
+ * transfer.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param hc Information needed to initialize the host channel. The xfer_len
+ * value may be reduced to accommodate the max widths of the XferSize and
+ * PktCnt fields in the HCTSIZn register. The multi_count value may be changed
+ * to reflect the final xfer_len value.
+ */
+void dwc_otg_hc_start_transfer(dwc_otg_core_if_t *core_if, dwc_hc_t *hc)
+{
+ hcchar_data_t hcchar;
+ hctsiz_data_t hctsiz;
+ uint16_t num_packets;
+ uint32_t max_hc_xfer_size = core_if->core_params->max_transfer_size;
+ uint16_t max_hc_pkt_count = core_if->core_params->max_packet_count;
+ dwc_otg_hc_regs_t *hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+
+ hctsiz.d32 = 0;
+
+ if (hc->do_ping) {
+ if (!core_if->dma_enable) {
+ dwc_otg_hc_do_ping(core_if, hc);
+ hc->xfer_started = 1;
+ return;
+ }
+ else {
+ hctsiz.b.dopng = 1;
+ }
+ }
+
+ if (hc->do_split) {
+ num_packets = 1;
+
+ if (hc->complete_split && !hc->ep_is_in) {
+ /* For CSPLIT OUT Transfer, set the size to 0 so the
+ * core doesn't expect any data written to the FIFO */
+ hc->xfer_len = 0;
+ }
+ else if (hc->ep_is_in || (hc->xfer_len > hc->max_packet)) {
+ hc->xfer_len = hc->max_packet;
+ }
+ else if (!hc->ep_is_in && (hc->xfer_len > 188)) {
+ hc->xfer_len = 188;
+ }
+
+ hctsiz.b.xfersize = hc->xfer_len;
+ }
+ else {
+ /*
+ * Ensure that the transfer length and packet count will fit
+ * in the widths allocated for them in the HCTSIZn register.
+ */
+ if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+ hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+ /*
+ * Make sure the transfer size is no larger than one
+ * (micro)frame's worth of data. (A check was done
+ * when the periodic transfer was accepted to ensure
+ * that a (micro)frame's worth of data can be
+ * programmed into a channel.)
+ */
+ uint32_t max_periodic_len = hc->multi_count * hc->max_packet;
+ if (hc->xfer_len > max_periodic_len) {
+ hc->xfer_len = max_periodic_len;
+ }
+ else {
+ }
+
+ }
+ else if (hc->xfer_len > max_hc_xfer_size) {
+ /* Make sure that xfer_len is a multiple of max packet size. */
+ hc->xfer_len = max_hc_xfer_size - hc->max_packet + 1;
+ }
+
+ if (hc->xfer_len > 0) {
+ num_packets = (hc->xfer_len + hc->max_packet - 1) / hc->max_packet;
+ if (num_packets > max_hc_pkt_count) {
+ num_packets = max_hc_pkt_count;
+ hc->xfer_len = num_packets * hc->max_packet;
+ }
+ }
+ else {
+ /* Need 1 packet for transfer length of 0. */
+ num_packets = 1;
+ }
+
+ if (hc->ep_is_in) {
+ /* Always program an integral # of max packets for IN transfers. */
+ hc->xfer_len = num_packets * hc->max_packet;
+ }
+
+ if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+ hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+ /*
+ * Make sure that the multi_count field matches the
+ * actual transfer length.
+ */
+ hc->multi_count = num_packets;
+ }
+
+ if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+ /* Set up the initial PID for the transfer. */
+ if (hc->speed == DWC_OTG_EP_SPEED_HIGH) {
+ if (hc->ep_is_in) {
+ if (hc->multi_count == 1) {
+ hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
+ }
+ else if (hc->multi_count == 2) {
+ hc->data_pid_start = DWC_OTG_HC_PID_DATA1;
+ }
+ else {
+ hc->data_pid_start = DWC_OTG_HC_PID_DATA2;
+ }
+ }
+ else {
+ if (hc->multi_count == 1) {
+ hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
+ }
+ else {
+ hc->data_pid_start = DWC_OTG_HC_PID_MDATA;
+ }
+ }
+ }
+ else {
+ hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
+ }
+ }
+
+ hctsiz.b.xfersize = hc->xfer_len;
+ }
+
+ hc->start_pkt_count = num_packets;
+ hctsiz.b.pktcnt = num_packets;
+ hctsiz.b.pid = hc->data_pid_start;
+ dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32);
+
+ DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+ DWC_DEBUGPL(DBG_HCDV, " Xfer Size: %d\n", hctsiz.b.xfersize);
+ DWC_DEBUGPL(DBG_HCDV, " Num Pkts: %d\n", hctsiz.b.pktcnt);
+ DWC_DEBUGPL(DBG_HCDV, " Start PID: %d\n", hctsiz.b.pid);
+
+ if (core_if->dma_enable) {
+#if defined (CONFIG_DWC_OTG_HOST_ONLY)
+ if ((uint32_t)hc->xfer_buff & 0x3) {
+ /* non DWORD-aligned buffer case*/
+ if(!hc->qh->dw_align_buf) {
+ hc->qh->dw_align_buf =
+ dma_alloc_coherent(NULL,
+ core_if->core_params->max_transfer_size,
+ &hc->qh->dw_align_buf_dma,
+ GFP_ATOMIC | GFP_DMA);
+ if (!hc->qh->dw_align_buf) {
+
+ DWC_ERROR("%s: Failed to allocate memory to handle "
+ "non-dword aligned buffer case\n", __func__);
+ return;
+ }
+
+ }
+ if (!hc->ep_is_in) {
+ memcpy(hc->qh->dw_align_buf, phys_to_virt((uint32_t)hc->xfer_buff), hc->xfer_len);
+ }
+
+ dwc_write_reg32(&hc_regs->hcdma, hc->qh->dw_align_buf_dma);
+ }
+ else
+#endif
+ dwc_write_reg32(&hc_regs->hcdma, (uint32_t)hc->xfer_buff);
+ }
+
+ /* Start the split */
+ if (hc->do_split) {
+ hcsplt_data_t hcsplt;
+ hcsplt.d32 = dwc_read_reg32 (&hc_regs->hcsplt);
+ hcsplt.b.spltena = 1;
+ dwc_write_reg32(&hc_regs->hcsplt, hcsplt.d32);
+ }
+
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ hcchar.b.multicnt = hc->multi_count;
+ hc_set_even_odd_frame(core_if, hc, &hcchar);
+#ifdef DEBUG
+ core_if->start_hcchar_val[hc->hc_num] = hcchar.d32;
+ if (hcchar.b.chdis) {
+ DWC_WARN("%s: chdis set, channel %d, hcchar 0x%08x\n",
+ __func__, hc->hc_num, hcchar.d32);
+ }
+#endif
+
+ /* Set host channel enable after all other setup is complete. */
+ hcchar.b.chen = 1;
+ hcchar.b.chdis = 0;
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+
+ hc->xfer_started = 1;
+ hc->requests++;
+
+ if (!core_if->dma_enable &&
+ !hc->ep_is_in && hc->xfer_len > 0) {
+ /* Load OUT packet into the appropriate Tx FIFO. */
+ dwc_otg_hc_write_packet(core_if, hc);
+ }
+
+#ifdef DEBUG
+ /* Start a timer for this transfer. */
+ core_if->hc_xfer_timer[hc->hc_num].function = hc_xfer_timeout;
+ core_if->hc_xfer_info[hc->hc_num].core_if = core_if;
+ core_if->hc_xfer_info[hc->hc_num].hc = hc;
+ core_if->hc_xfer_timer[hc->hc_num].data = (unsigned long)(&core_if->hc_xfer_info[hc->hc_num]);
+ core_if->hc_xfer_timer[hc->hc_num].expires = jiffies + (HZ*10);
+ add_timer(&core_if->hc_xfer_timer[hc->hc_num]);
+#endif
+}
+
+/**
+ * This function continues a data transfer that was started by previous call
+ * to <code>dwc_otg_hc_start_transfer</code>. The caller must ensure there is
+ * sufficient space in the request queue and Tx Data FIFO. This function
+ * should only be called in Slave mode. In DMA mode, the controller acts
+ * autonomously to complete transfers programmed to a host channel.
+ *
+ * For an OUT transfer, a new data packet is loaded into the appropriate FIFO
+ * if there is any data remaining to be queued. For an IN transfer, another
+ * data packet is always requested. For the SETUP phase of a control transfer,
+ * this function does nothing.
+ *
+ * @return 1 if a new request is queued, 0 if no more requests are required
+ * for this transfer.
+ */
+int dwc_otg_hc_continue_transfer(dwc_otg_core_if_t *core_if, dwc_hc_t *hc)
+{
+ DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+
+ if (hc->do_split) {
+ /* SPLITs always queue just once per channel */
+ return 0;
+ }
+ else if (hc->data_pid_start == DWC_OTG_HC_PID_SETUP) {
+ /* SETUPs are queued only once since they can't be NAKed. */
+ return 0;
+ }
+ else if (hc->ep_is_in) {
+ /*
+ * Always queue another request for other IN transfers. If
+ * back-to-back INs are issued and NAKs are received for both,
+ * the driver may still be processing the first NAK when the
+ * second NAK is received. When the interrupt handler clears
+ * the NAK interrupt for the first NAK, the second NAK will
+ * not be seen. So we can't depend on the NAK interrupt
+ * handler to requeue a NAKed request. Instead, IN requests
+ * are issued each time this function is called. When the
+ * transfer completes, the extra requests for the channel will
+ * be flushed.
+ */
+ hcchar_data_t hcchar;
+ dwc_otg_hc_regs_t *hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ hc_set_even_odd_frame(core_if, hc, &hcchar);
+ hcchar.b.chen = 1;
+ hcchar.b.chdis = 0;
+ DWC_DEBUGPL(DBG_HCDV, " IN xfer: hcchar = 0x%08x\n", hcchar.d32);
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+ hc->requests++;
+ return 1;
+ }
+ else {
+ /* OUT transfers. */
+ if (hc->xfer_count < hc->xfer_len) {
+ if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+ hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+ hcchar_data_t hcchar;
+ dwc_otg_hc_regs_t *hc_regs;
+ hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ hc_set_even_odd_frame(core_if, hc, &hcchar);
+ }
+
+ /* Load OUT packet into the appropriate Tx FIFO. */
+ dwc_otg_hc_write_packet(core_if, hc);
+ hc->requests++;
+ return 1;
+ }
+ else {
+ return 0;
+ }
+ }
+}
+
+/**
+ * Starts a PING transfer. This function should only be called in Slave mode.
+ * The Do Ping bit is set in the HCTSIZ register, then the channel is enabled.
+ */
+void dwc_otg_hc_do_ping(dwc_otg_core_if_t *core_if, dwc_hc_t *hc)
+{
+ hcchar_data_t hcchar;
+ hctsiz_data_t hctsiz;
+ dwc_otg_hc_regs_t *hc_regs = core_if->host_if->hc_regs[hc->hc_num];
+
+ DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
+
+ hctsiz.d32 = 0;
+ hctsiz.b.dopng = 1;
+ hctsiz.b.pktcnt = 1;
+ dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32);
+
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ hcchar.b.chen = 1;
+ hcchar.b.chdis = 0;
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+}
+
+/*
+ * This function writes a packet into the Tx FIFO associated with the Host
+ * Channel. For a channel associated with a non-periodic EP, the non-periodic
+ * Tx FIFO is written. For a channel associated with a periodic EP, the
+ * periodic Tx FIFO is written. This function should only be called in Slave
+ * mode.
+ *
+ * Upon return the xfer_buff and xfer_count fields in _hc are incremented by
+ * then number of bytes written to the Tx FIFO.
+ */
+void dwc_otg_hc_write_packet(dwc_otg_core_if_t *core_if, dwc_hc_t *hc)
+{
+ uint32_t i;
+ uint32_t remaining_count;
+ uint32_t byte_count;
+ uint32_t dword_count;
+
+ uint32_t *data_buff = (uint32_t *)(hc->xfer_buff);
+ uint32_t *data_fifo = core_if->data_fifo[hc->hc_num];
+
+ remaining_count = hc->xfer_len - hc->xfer_count;
+ if (remaining_count > hc->max_packet) {
+ byte_count = hc->max_packet;
+ }
+ else {
+ byte_count = remaining_count;
+ }
+
+ dword_count = (byte_count + 3) / 4;
+
+ if ((((unsigned long)data_buff) & 0x3) == 0) {
+ /* xfer_buff is DWORD aligned. */
+ for (i = 0; i < dword_count; i++, data_buff++)
+ {
+ dwc_write_reg32(data_fifo, *data_buff);
+ }
+ }
+ else {
+ /* xfer_buff is not DWORD aligned. */
+ for (i = 0; i < dword_count; i++, data_buff++)
+ {
+ dwc_write_reg32(data_fifo, get_unaligned(data_buff));
+ }
+ }
+
+ hc->xfer_count += byte_count;
+ hc->xfer_buff += byte_count;
+}
+
+/**
+ * Gets the current USB frame number. This is the frame number from the last
+ * SOF packet.
+ */
+uint32_t dwc_otg_get_frame_number(dwc_otg_core_if_t *core_if)
+{
+ dsts_data_t dsts;
+ dsts.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dsts);
+
+ /* read current frame/microframe number from DSTS register */
+ return dsts.b.soffn;
+}
+
+/**
+ * This function reads a setup packet from the Rx FIFO into the destination
+ * buffer. This function is called from the Rx Status Queue Level (RxStsQLvl)
+ * Interrupt routine when a SETUP packet has been received in Slave mode.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dest Destination buffer for packet data.
+ */
+void dwc_otg_read_setup_packet(dwc_otg_core_if_t *core_if, uint32_t *dest)
+{
+ /* Get the 8 bytes of a setup transaction data */
+
+ /* Pop 2 DWORDS off the receive data FIFO into memory */
+ dest[0] = dwc_read_reg32(core_if->data_fifo[0]);
+ dest[1] = dwc_read_reg32(core_if->data_fifo[0]);
+}
+
+
+/**
+ * This function enables EP0 OUT to receive SETUP packets and configures EP0
+ * IN for transmitting packets. It is normally called when the
+ * "Enumeration Done" interrupt occurs.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP0 data.
+ */
+void dwc_otg_ep0_activate(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+ dsts_data_t dsts;
+ depctl_data_t diepctl;
+ depctl_data_t doepctl;
+ dctl_data_t dctl = { .d32 = 0 };
+
+ /* Read the Device Status and Endpoint 0 Control registers */
+ dsts.d32 = dwc_read_reg32(&dev_if->dev_global_regs->dsts);
+ diepctl.d32 = dwc_read_reg32(&dev_if->in_ep_regs[0]->diepctl);
+ doepctl.d32 = dwc_read_reg32(&dev_if->out_ep_regs[0]->doepctl);
+
+ /* Set the MPS of the IN EP based on the enumeration speed */
+ switch (dsts.b.enumspd) {
+ case DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ:
+ case DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ:
+ case DWC_DSTS_ENUMSPD_FS_PHY_48MHZ:
+ diepctl.b.mps = DWC_DEP0CTL_MPS_64;
+ break;
+ case DWC_DSTS_ENUMSPD_LS_PHY_6MHZ:
+ diepctl.b.mps = DWC_DEP0CTL_MPS_8;
+ break;
+ }
+
+ dwc_write_reg32(&dev_if->in_ep_regs[0]->diepctl, diepctl.d32);
+
+ /* Enable OUT EP for receive */
+ doepctl.b.epena = 1;
+ dwc_write_reg32(&dev_if->out_ep_regs[0]->doepctl, doepctl.d32);
+
+#ifdef VERBOSE
+ DWC_DEBUGPL(DBG_PCDV,"doepctl0=%0x\n",
+ dwc_read_reg32(&dev_if->out_ep_regs[0]->doepctl));
+ DWC_DEBUGPL(DBG_PCDV,"diepctl0=%0x\n",
+ dwc_read_reg32(&dev_if->in_ep_regs[0]->diepctl));
+#endif
+ dctl.b.cgnpinnak = 1;
+
+ dwc_modify_reg32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
+ DWC_DEBUGPL(DBG_PCDV,"dctl=%0x\n",
+ dwc_read_reg32(&dev_if->dev_global_regs->dctl));
+}
+
+/**
+ * This function activates an EP. The Device EP control register for
+ * the EP is configured as defined in the ep structure. Note: This
+ * function is not used for EP0.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to activate.
+ */
+void dwc_otg_ep_activate(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+ depctl_data_t depctl;
+ volatile uint32_t *addr;
+ daint_data_t daintmsk = { .d32 = 0 };
+
+ DWC_DEBUGPL(DBG_PCDV, "%s() EP%d-%s\n", __func__, ep->num,
+ (ep->is_in?"IN":"OUT"));
+
+ /* Read DEPCTLn register */
+ if (ep->is_in == 1) {
+ addr = &dev_if->in_ep_regs[ep->num]->diepctl;
+ daintmsk.ep.in = 1<<ep->num;
+ }
+ else {
+ addr = &dev_if->out_ep_regs[ep->num]->doepctl;
+ daintmsk.ep.out = 1<<ep->num;
+ }
+
+ /* If the EP is already active don't change the EP Control
+ * register. */
+ depctl.d32 = dwc_read_reg32(addr);
+ if (!depctl.b.usbactep) {
+ depctl.b.mps = ep->maxpacket;
+ depctl.b.eptype = ep->type;
+ depctl.b.txfnum = ep->tx_fifo_num;
+
+ if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
+ depctl.b.setd0pid = 1; // ???
+ }
+ else {
+ depctl.b.setd0pid = 1;
+ }
+ depctl.b.usbactep = 1;
+
+ dwc_write_reg32(addr, depctl.d32);
+ DWC_DEBUGPL(DBG_PCDV,"DEPCTL=%08x\n", dwc_read_reg32(addr));
+ }
+
+ /* Enable the Interrupt for this EP */
+ if(core_if->multiproc_int_enable) {
+ if (ep->is_in == 1) {
+ diepmsk_data_t diepmsk = { .d32 = 0};
+ diepmsk.b.xfercompl = 1;
+ diepmsk.b.timeout = 1;
+ diepmsk.b.epdisabled = 1;
+ diepmsk.b.ahberr = 1;
+ diepmsk.b.intknepmis = 1;
+ diepmsk.b.txfifoundrn = 1; //?????
+
+
+ if(core_if->dma_desc_enable) {
+ diepmsk.b.bna = 1;
+ }
+/*
+ if(core_if->dma_enable) {
+ doepmsk.b.nak = 1;
+ }
+*/
+ dwc_write_reg32(&dev_if->dev_global_regs->diepeachintmsk[ep->num], diepmsk.d32);
+
+ } else {
+ doepmsk_data_t doepmsk = { .d32 = 0};
+ doepmsk.b.xfercompl = 1;
+ doepmsk.b.ahberr = 1;
+ doepmsk.b.epdisabled = 1;
+
+
+ if(core_if->dma_desc_enable) {
+ doepmsk.b.bna = 1;
+ }
+/*
+ doepmsk.b.babble = 1;
+ doepmsk.b.nyet = 1;
+ doepmsk.b.nak = 1;
+*/
+ dwc_write_reg32(&dev_if->dev_global_regs->doepeachintmsk[ep->num], doepmsk.d32);
+ }
+ dwc_modify_reg32(&dev_if->dev_global_regs->deachintmsk,
+ 0, daintmsk.d32);
+ } else {
+ dwc_modify_reg32(&dev_if->dev_global_regs->daintmsk,
+ 0, daintmsk.d32);
+ }
+
+ DWC_DEBUGPL(DBG_PCDV,"DAINTMSK=%0x\n",
+ dwc_read_reg32(&dev_if->dev_global_regs->daintmsk));
+
+ ep->stall_clear_flag = 0;
+ return;
+}
+
+/**
+ * This function deactivates an EP. This is done by clearing the USB Active
+ * EP bit in the Device EP control register. Note: This function is not used
+ * for EP0. EP0 cannot be deactivated.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to deactivate.
+ */
+void dwc_otg_ep_deactivate(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ depctl_data_t depctl = { .d32 = 0 };
+ volatile uint32_t *addr;
+ daint_data_t daintmsk = { .d32 = 0};
+
+ /* Read DEPCTLn register */
+ if (ep->is_in == 1) {
+ addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
+ daintmsk.ep.in = 1<<ep->num;
+ }
+ else {
+ addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
+ daintmsk.ep.out = 1<<ep->num;
+ }
+
+ depctl.b.usbactep = 0;
+
+ if(core_if->dma_desc_enable)
+ depctl.b.epdis = 1;
+
+ dwc_write_reg32(addr, depctl.d32);
+
+ /* Disable the Interrupt for this EP */
+ if(core_if->multiproc_int_enable) {
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->deachintmsk,
+ daintmsk.d32, 0);
+
+ if (ep->is_in == 1) {
+ dwc_write_reg32(&core_if->dev_if->dev_global_regs->diepeachintmsk[ep->num], 0);
+ } else {
+ dwc_write_reg32(&core_if->dev_if->dev_global_regs->doepeachintmsk[ep->num], 0);
+ }
+ } else {
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->daintmsk,
+ daintmsk.d32, 0);
+ }
+}
+
+/**
+ * This function does the setup for a data transfer for an EP and
+ * starts the transfer. For an IN transfer, the packets will be
+ * loaded into the appropriate Tx FIFO in the ISR. For OUT transfers,
+ * the packets are unloaded from the Rx FIFO in the ISR. the ISR.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ */
+static void init_dma_desc_chain(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ dwc_otg_dma_desc_t* dma_desc;
+ uint32_t offset;
+ uint32_t xfer_est;
+ int i;
+
+ ep->desc_cnt = ( ep->total_len / ep->maxxfer) +
+ ((ep->total_len % ep->maxxfer) ? 1 : 0);
+ if(!ep->desc_cnt)
+ ep->desc_cnt = 1;
+
+ dma_desc = ep->desc_addr;
+ xfer_est = ep->total_len;
+ offset = 0;
+ for( i = 0; i < ep->desc_cnt; ++i) {
+ /** DMA Descriptor Setup */
+ if(xfer_est > ep->maxxfer) {
+ dma_desc->status.b.bs = BS_HOST_BUSY;
+ dma_desc->status.b.l = 0;
+ dma_desc->status.b.ioc = 0;
+ dma_desc->status.b.sp = 0;
+ dma_desc->status.b.bytes = ep->maxxfer;
+ dma_desc->buf = ep->dma_addr + offset;
+ dma_desc->status.b.bs = BS_HOST_READY;
+
+ xfer_est -= ep->maxxfer;
+ offset += ep->maxxfer;
+ } else {
+ dma_desc->status.b.bs = BS_HOST_BUSY;
+ dma_desc->status.b.l = 1;
+ dma_desc->status.b.ioc = 1;
+ if(ep->is_in) {
+ dma_desc->status.b.sp = (xfer_est % ep->maxpacket) ?
+ 1 : ((ep->sent_zlp) ? 1 : 0);
+ dma_desc->status.b.bytes = xfer_est;
+ } else {
+ dma_desc->status.b.bytes = xfer_est + ((4 - (xfer_est & 0x3)) & 0x3) ;
+ }
+
+ dma_desc->buf = ep->dma_addr + offset;
+ dma_desc->status.b.bs = BS_HOST_READY;
+ }
+ dma_desc ++;
+ }
+}
+
+/**
+ * This function does the setup for a data transfer for an EP and
+ * starts the transfer. For an IN transfer, the packets will be
+ * loaded into the appropriate Tx FIFO in the ISR. For OUT transfers,
+ * the packets are unloaded from the Rx FIFO in the ISR. the ISR.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ */
+
+void dwc_otg_ep_start_transfer(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ depctl_data_t depctl;
+ deptsiz_data_t deptsiz;
+ gintmsk_data_t intr_mask = { .d32 = 0};
+
+ DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s()\n", __func__);
+
+ DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d "
+ "xfer_buff=%p start_xfer_buff=%p\n",
+ ep->num, (ep->is_in?"IN":"OUT"), ep->xfer_len,
+ ep->xfer_count, ep->xfer_buff, ep->start_xfer_buff);
+
+ /* IN endpoint */
+ if (ep->is_in == 1) {
+ dwc_otg_dev_in_ep_regs_t *in_regs =
+ core_if->dev_if->in_ep_regs[ep->num];
+
+ gnptxsts_data_t gtxstatus;
+
+ gtxstatus.d32 =
+ dwc_read_reg32(&core_if->core_global_regs->gnptxsts);
+
+ if(core_if->en_multiple_tx_fifo == 0 && gtxstatus.b.nptxqspcavail == 0) {
+#ifdef DEBUG
+ DWC_PRINT("TX Queue Full (0x%0x)\n", gtxstatus.d32);
+#endif
+ return;
+ }
+
+ depctl.d32 = dwc_read_reg32(&(in_regs->diepctl));
+ deptsiz.d32 = dwc_read_reg32(&(in_regs->dieptsiz));
+
+ ep->xfer_len += (ep->maxxfer < (ep->total_len - ep->xfer_len)) ?
+ ep->maxxfer : (ep->total_len - ep->xfer_len);
+
+ /* Zero Length Packet? */
+ if ((ep->xfer_len - ep->xfer_count) == 0) {
+ deptsiz.b.xfersize = 0;
+ deptsiz.b.pktcnt = 1;
+ }
+ else {
+ /* Program the transfer size and packet count
+ * as follows: xfersize = N * maxpacket +
+ * short_packet pktcnt = N + (short_packet
+ * exist ? 1 : 0)
+ */
+ deptsiz.b.xfersize = ep->xfer_len - ep->xfer_count;
+ deptsiz.b.pktcnt =
+ (ep->xfer_len - ep->xfer_count - 1 + ep->maxpacket) /
+ ep->maxpacket;
+ }
+
+
+ /* Write the DMA register */
+ if (core_if->dma_enable) {
+ if (core_if->dma_desc_enable == 0) {
+ dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32);
+ dwc_write_reg32 (&(in_regs->diepdma),
+ (uint32_t)ep->dma_addr);
+ }
+ else {
+ init_dma_desc_chain(core_if, ep);
+ /** DIEPDMAn Register write */
+ dwc_write_reg32(&in_regs->diepdma, ep->dma_desc_addr);
+ }
+ }
+ else {
+ dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32);
+ if(ep->type != DWC_OTG_EP_TYPE_ISOC) {
+ /**
+ * Enable the Non-Periodic Tx FIFO empty interrupt,
+ * or the Tx FIFO epmty interrupt in dedicated Tx FIFO mode,
+ * the data will be written into the fifo by the ISR.
+ */
+ if(core_if->en_multiple_tx_fifo == 0) {
+ intr_mask.b.nptxfempty = 1;
+ dwc_modify_reg32(&core_if->core_global_regs->gintmsk,
+ intr_mask.d32, intr_mask.d32);
+ }
+ else {
+ /* Enable the Tx FIFO Empty Interrupt for this EP */
+ if(ep->xfer_len > 0) {
+ uint32_t fifoemptymsk = 0;
+ fifoemptymsk = 1 << ep->num;
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+ 0, fifoemptymsk);
+
+ }
+ }
+ }
+ }
+
+ /* EP enable, IN data in FIFO */
+ depctl.b.cnak = 1;
+ depctl.b.epena = 1;
+ dwc_write_reg32(&in_regs->diepctl, depctl.d32);
+
+ depctl.d32 = dwc_read_reg32 (&core_if->dev_if->in_ep_regs[0]->diepctl);
+ depctl.b.nextep = ep->num;
+ dwc_write_reg32 (&core_if->dev_if->in_ep_regs[0]->diepctl, depctl.d32);
+
+ }
+ else {
+ /* OUT endpoint */
+ dwc_otg_dev_out_ep_regs_t *out_regs =
+ core_if->dev_if->out_ep_regs[ep->num];
+
+ depctl.d32 = dwc_read_reg32(&(out_regs->doepctl));
+ deptsiz.d32 = dwc_read_reg32(&(out_regs->doeptsiz));
+
+ ep->xfer_len += (ep->maxxfer < (ep->total_len - ep->xfer_len)) ?
+ ep->maxxfer : (ep->total_len - ep->xfer_len);
+
+ /* Program the transfer size and packet count as follows:
+ *
+ * pktcnt = N
+ * xfersize = N * maxpacket
+ */
+ if ((ep->xfer_len - ep->xfer_count) == 0) {
+ /* Zero Length Packet */
+ deptsiz.b.xfersize = ep->maxpacket;
+ deptsiz.b.pktcnt = 1;
+ }
+ else {
+ deptsiz.b.pktcnt =
+ (ep->xfer_len - ep->xfer_count + (ep->maxpacket - 1)) /
+ ep->maxpacket;
+ ep->xfer_len = deptsiz.b.pktcnt * ep->maxpacket + ep->xfer_count;
+ deptsiz.b.xfersize = ep->xfer_len - ep->xfer_count;
+ }
+
+ DWC_DEBUGPL(DBG_PCDV, "ep%d xfersize=%d pktcnt=%d\n",
+ ep->num,
+ deptsiz.b.xfersize, deptsiz.b.pktcnt);
+
+ if (core_if->dma_enable) {
+ if (!core_if->dma_desc_enable) {
+ dwc_write_reg32(&out_regs->doeptsiz, deptsiz.d32);
+
+ dwc_write_reg32 (&(out_regs->doepdma),
+ (uint32_t)ep->dma_addr);
+ }
+ else {
+ init_dma_desc_chain(core_if, ep);
+
+ /** DOEPDMAn Register write */
+ dwc_write_reg32(&out_regs->doepdma, ep->dma_desc_addr);
+ }
+ }
+ else {
+ dwc_write_reg32(&out_regs->doeptsiz, deptsiz.d32);
+ }
+
+ /* EP enable */
+ depctl.b.cnak = 1;
+ depctl.b.epena = 1;
+
+ dwc_write_reg32(&out_regs->doepctl, depctl.d32);
+
+ DWC_DEBUGPL(DBG_PCD, "DOEPCTL=%08x DOEPTSIZ=%08x\n",
+ dwc_read_reg32(&out_regs->doepctl),
+ dwc_read_reg32(&out_regs->doeptsiz));
+ DWC_DEBUGPL(DBG_PCD, "DAINTMSK=%08x GINTMSK=%08x\n",
+ dwc_read_reg32(&core_if->dev_if->dev_global_regs->daintmsk),
+ dwc_read_reg32(&core_if->core_global_regs->gintmsk));
+ }
+}
+
+/**
+ * This function setup a zero length transfer in Buffer DMA and
+ * Slave modes for usb requests with zero field set
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void dwc_otg_ep_start_zl_transfer(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+
+ depctl_data_t depctl;
+ deptsiz_data_t deptsiz;
+ gintmsk_data_t intr_mask = { .d32 = 0};
+
+ DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s()\n", __func__);
+
+ /* IN endpoint */
+ if (ep->is_in == 1) {
+ dwc_otg_dev_in_ep_regs_t *in_regs =
+ core_if->dev_if->in_ep_regs[ep->num];
+
+ depctl.d32 = dwc_read_reg32(&(in_regs->diepctl));
+ deptsiz.d32 = dwc_read_reg32(&(in_regs->dieptsiz));
+
+ deptsiz.b.xfersize = 0;
+ deptsiz.b.pktcnt = 1;
+
+
+ /* Write the DMA register */
+ if (core_if->dma_enable) {
+ if (core_if->dma_desc_enable == 0) {
+ dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32);
+ dwc_write_reg32 (&(in_regs->diepdma),
+ (uint32_t)ep->dma_addr);
+ }
+ }
+ else {
+ dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32);
+ /**
+ * Enable the Non-Periodic Tx FIFO empty interrupt,
+ * or the Tx FIFO epmty interrupt in dedicated Tx FIFO mode,
+ * the data will be written into the fifo by the ISR.
+ */
+ if(core_if->en_multiple_tx_fifo == 0) {
+ intr_mask.b.nptxfempty = 1;
+ dwc_modify_reg32(&core_if->core_global_regs->gintmsk,
+ intr_mask.d32, intr_mask.d32);
+ }
+ else {
+ /* Enable the Tx FIFO Empty Interrupt for this EP */
+ if(ep->xfer_len > 0) {
+ uint32_t fifoemptymsk = 0;
+ fifoemptymsk = 1 << ep->num;
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+ 0, fifoemptymsk);
+ }
+ }
+ }
+
+ /* EP enable, IN data in FIFO */
+ depctl.b.cnak = 1;
+ depctl.b.epena = 1;
+ dwc_write_reg32(&in_regs->diepctl, depctl.d32);
+
+ depctl.d32 = dwc_read_reg32 (&core_if->dev_if->in_ep_regs[0]->diepctl);
+ depctl.b.nextep = ep->num;
+ dwc_write_reg32 (&core_if->dev_if->in_ep_regs[0]->diepctl, depctl.d32);
+
+ }
+ else {
+ /* OUT endpoint */
+ dwc_otg_dev_out_ep_regs_t *out_regs =
+ core_if->dev_if->out_ep_regs[ep->num];
+
+ depctl.d32 = dwc_read_reg32(&(out_regs->doepctl));
+ deptsiz.d32 = dwc_read_reg32(&(out_regs->doeptsiz));
+
+ /* Zero Length Packet */
+ deptsiz.b.xfersize = ep->maxpacket;
+ deptsiz.b.pktcnt = 1;
+
+ if (core_if->dma_enable) {
+ if (!core_if->dma_desc_enable) {
+ dwc_write_reg32(&out_regs->doeptsiz, deptsiz.d32);
+
+ dwc_write_reg32 (&(out_regs->doepdma),
+ (uint32_t)ep->dma_addr);
+ }
+ }
+ else {
+ dwc_write_reg32(&out_regs->doeptsiz, deptsiz.d32);
+ }
+
+ /* EP enable */
+ depctl.b.cnak = 1;
+ depctl.b.epena = 1;
+
+ dwc_write_reg32(&out_regs->doepctl, depctl.d32);
+
+ }
+}
+
+/**
+ * This function does the setup for a data transfer for EP0 and starts
+ * the transfer. For an IN transfer, the packets will be loaded into
+ * the appropriate Tx FIFO in the ISR. For OUT transfers, the packets are
+ * unloaded from the Rx FIFO in the ISR.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP0 data.
+ */
+void dwc_otg_ep0_start_transfer(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ depctl_data_t depctl;
+ deptsiz0_data_t deptsiz;
+ gintmsk_data_t intr_mask = { .d32 = 0};
+ dwc_otg_dma_desc_t* dma_desc;
+
+ DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d "
+ "xfer_buff=%p start_xfer_buff=%p \n",
+ ep->num, (ep->is_in?"IN":"OUT"), ep->xfer_len,
+ ep->xfer_count, ep->xfer_buff, ep->start_xfer_buff);
+
+ ep->total_len = ep->xfer_len;
+
+ /* IN endpoint */
+ if (ep->is_in == 1) {
+ dwc_otg_dev_in_ep_regs_t *in_regs =
+ core_if->dev_if->in_ep_regs[0];
+
+ gnptxsts_data_t gtxstatus;
+
+ gtxstatus.d32 =
+ dwc_read_reg32(&core_if->core_global_regs->gnptxsts);
+
+ if(core_if->en_multiple_tx_fifo == 0 && gtxstatus.b.nptxqspcavail == 0) {
+#ifdef DEBUG
+ deptsiz.d32 = dwc_read_reg32(&in_regs->dieptsiz);
+ DWC_DEBUGPL(DBG_PCD,"DIEPCTL0=%0x\n",
+ dwc_read_reg32(&in_regs->diepctl));
+ DWC_DEBUGPL(DBG_PCD, "DIEPTSIZ0=%0x (sz=%d, pcnt=%d)\n",
+ deptsiz.d32,
+ deptsiz.b.xfersize, deptsiz.b.pktcnt);
+ DWC_PRINT("TX Queue or FIFO Full (0x%0x)\n",
+ gtxstatus.d32);
+#endif
+ return;
+ }
+
+
+ depctl.d32 = dwc_read_reg32(&in_regs->diepctl);
+ deptsiz.d32 = dwc_read_reg32(&in_regs->dieptsiz);
+
+ /* Zero Length Packet? */
+ if (ep->xfer_len == 0) {
+ deptsiz.b.xfersize = 0;
+ deptsiz.b.pktcnt = 1;
+ }
+ else {
+ /* Program the transfer size and packet count
+ * as follows: xfersize = N * maxpacket +
+ * short_packet pktcnt = N + (short_packet
+ * exist ? 1 : 0)
+ */
+ if (ep->xfer_len > ep->maxpacket) {
+ ep->xfer_len = ep->maxpacket;
+ deptsiz.b.xfersize = ep->maxpacket;
+ }
+ else {
+ deptsiz.b.xfersize = ep->xfer_len;
+ }
+ deptsiz.b.pktcnt = 1;
+
+ }
+ DWC_DEBUGPL(DBG_PCDV, "IN len=%d xfersize=%d pktcnt=%d [%08x]\n",
+ ep->xfer_len,
+ deptsiz.b.xfersize, deptsiz.b.pktcnt, deptsiz.d32);
+
+ /* Write the DMA register */
+ if (core_if->dma_enable) {
+ if(core_if->dma_desc_enable == 0) {
+ dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32);
+
+ dwc_write_reg32 (&(in_regs->diepdma),
+ (uint32_t)ep->dma_addr);
+ }
+ else {
+ dma_desc = core_if->dev_if->in_desc_addr;
+
+ /** DMA Descriptor Setup */
+ dma_desc->status.b.bs = BS_HOST_BUSY;
+ dma_desc->status.b.l = 1;
+ dma_desc->status.b.ioc = 1;
+ dma_desc->status.b.sp = (ep->xfer_len == ep->maxpacket) ? 0 : 1;
+ dma_desc->status.b.bytes = ep->xfer_len;
+ dma_desc->buf = ep->dma_addr;
+ dma_desc->status.b.bs = BS_HOST_READY;
+
+ /** DIEPDMA0 Register write */
+ dwc_write_reg32(&in_regs->diepdma, core_if->dev_if->dma_in_desc_addr);
+ }
+ }
+ else {
+ dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32);
+ }
+
+ /* EP enable, IN data in FIFO */
+ depctl.b.cnak = 1;
+ depctl.b.epena = 1;
+ dwc_write_reg32(&in_regs->diepctl, depctl.d32);
+
+ /**
+ * Enable the Non-Periodic Tx FIFO empty interrupt, the
+ * data will be written into the fifo by the ISR.
+ */
+ if (!core_if->dma_enable) {
+ if(core_if->en_multiple_tx_fifo == 0) {
+ intr_mask.b.nptxfempty = 1;
+ dwc_modify_reg32(&core_if->core_global_regs->gintmsk,
+ intr_mask.d32, intr_mask.d32);
+ }
+ else {
+ /* Enable the Tx FIFO Empty Interrupt for this EP */
+ if(ep->xfer_len > 0) {
+ uint32_t fifoemptymsk = 0;
+ fifoemptymsk |= 1 << ep->num;
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+ 0, fifoemptymsk);
+ }
+ }
+ }
+ }
+ else {
+ /* OUT endpoint */
+ dwc_otg_dev_out_ep_regs_t *out_regs =
+ core_if->dev_if->out_ep_regs[0];
+
+ depctl.d32 = dwc_read_reg32(&out_regs->doepctl);
+ deptsiz.d32 = dwc_read_reg32(&out_regs->doeptsiz);
+
+ /* Program the transfer size and packet count as follows:
+ * xfersize = N * (maxpacket + 4 - (maxpacket % 4))
+ * pktcnt = N */
+ /* Zero Length Packet */
+ deptsiz.b.xfersize = ep->maxpacket;
+ deptsiz.b.pktcnt = 1;
+
+ DWC_DEBUGPL(DBG_PCDV, "len=%d xfersize=%d pktcnt=%d\n",
+ ep->xfer_len,
+ deptsiz.b.xfersize, deptsiz.b.pktcnt);
+
+ if (core_if->dma_enable) {
+ if(!core_if->dma_desc_enable) {
+ dwc_write_reg32(&out_regs->doeptsiz, deptsiz.d32);
+
+ dwc_write_reg32 (&(out_regs->doepdma),
+ (uint32_t)ep->dma_addr);
+ }
+ else {
+ dma_desc = core_if->dev_if->out_desc_addr;
+
+ /** DMA Descriptor Setup */
+ dma_desc->status.b.bs = BS_HOST_BUSY;
+ dma_desc->status.b.l = 1;
+ dma_desc->status.b.ioc = 1;
+ dma_desc->status.b.bytes = ep->maxpacket;
+ dma_desc->buf = ep->dma_addr;
+ dma_desc->status.b.bs = BS_HOST_READY;
+
+ /** DOEPDMA0 Register write */
+ dwc_write_reg32(&out_regs->doepdma, core_if->dev_if->dma_out_desc_addr);
+ }
+ }
+ else {
+ dwc_write_reg32(&out_regs->doeptsiz, deptsiz.d32);
+ }
+
+ /* EP enable */
+ depctl.b.cnak = 1;
+ depctl.b.epena = 1;
+ dwc_write_reg32 (&(out_regs->doepctl), depctl.d32);
+ }
+}
+
+/**
+ * This function continues control IN transfers started by
+ * dwc_otg_ep0_start_transfer, when the transfer does not fit in a
+ * single packet. NOTE: The DIEPCTL0/DOEPCTL0 registers only have one
+ * bit for the packet count.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP0 data.
+ */
+void dwc_otg_ep0_continue_transfer(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ depctl_data_t depctl;
+ deptsiz0_data_t deptsiz;
+ gintmsk_data_t intr_mask = { .d32 = 0};
+ dwc_otg_dma_desc_t* dma_desc;
+
+ if (ep->is_in == 1) {
+ dwc_otg_dev_in_ep_regs_t *in_regs =
+ core_if->dev_if->in_ep_regs[0];
+ gnptxsts_data_t tx_status = { .d32 = 0 };
+
+ tx_status.d32 = dwc_read_reg32(&core_if->core_global_regs->gnptxsts);
+ /** @todo Should there be check for room in the Tx
+ * Status Queue. If not remove the code above this comment. */
+
+ depctl.d32 = dwc_read_reg32(&in_regs->diepctl);
+ deptsiz.d32 = dwc_read_reg32(&in_regs->dieptsiz);
+
+ /* Program the transfer size and packet count
+ * as follows: xfersize = N * maxpacket +
+ * short_packet pktcnt = N + (short_packet
+ * exist ? 1 : 0)
+ */
+
+
+ if(core_if->dma_desc_enable == 0) {
+ deptsiz.b.xfersize = (ep->total_len - ep->xfer_count) > ep->maxpacket ? ep->maxpacket :
+ (ep->total_len - ep->xfer_count);
+ deptsiz.b.pktcnt = 1;
+ if(core_if->dma_enable == 0) {
+ ep->xfer_len += deptsiz.b.xfersize;
+ } else {
+ ep->xfer_len = deptsiz.b.xfersize;
+ }
+ dwc_write_reg32(&in_regs->dieptsiz, deptsiz.d32);
+ }
+ else {
+ ep->xfer_len = (ep->total_len - ep->xfer_count) > ep->maxpacket ? ep->maxpacket :
+ (ep->total_len - ep->xfer_count);
+
+ dma_desc = core_if->dev_if->in_desc_addr;
+
+ /** DMA Descriptor Setup */
+ dma_desc->status.b.bs = BS_HOST_BUSY;
+ dma_desc->status.b.l = 1;
+ dma_desc->status.b.ioc = 1;
+ dma_desc->status.b.sp = (ep->xfer_len == ep->maxpacket) ? 0 : 1;
+ dma_desc->status.b.bytes = ep->xfer_len;
+ dma_desc->buf = ep->dma_addr;
+ dma_desc->status.b.bs = BS_HOST_READY;
+
+ /** DIEPDMA0 Register write */
+ dwc_write_reg32(&in_regs->diepdma, core_if->dev_if->dma_in_desc_addr);
+ }
+
+
+ DWC_DEBUGPL(DBG_PCDV, "IN len=%d xfersize=%d pktcnt=%d [%08x]\n",
+ ep->xfer_len,
+ deptsiz.b.xfersize, deptsiz.b.pktcnt, deptsiz.d32);
+
+ /* Write the DMA register */
+ if (core_if->hwcfg2.b.architecture == DWC_INT_DMA_ARCH) {
+ if(core_if->dma_desc_enable == 0)
+ dwc_write_reg32 (&(in_regs->diepdma), (uint32_t)ep->dma_addr);
+ }
+
+ /* EP enable, IN data in FIFO */
+ depctl.b.cnak = 1;
+ depctl.b.epena = 1;
+ dwc_write_reg32(&in_regs->diepctl, depctl.d32);
+
+ /**
+ * Enable the Non-Periodic Tx FIFO empty interrupt, the
+ * data will be written into the fifo by the ISR.
+ */
+ if (!core_if->dma_enable) {
+ if(core_if->en_multiple_tx_fifo == 0) {
+ /* First clear it from GINTSTS */
+ intr_mask.b.nptxfempty = 1;
+ dwc_modify_reg32(&core_if->core_global_regs->gintmsk,
+ intr_mask.d32, intr_mask.d32);
+
+ }
+ else {
+ /* Enable the Tx FIFO Empty Interrupt for this EP */
+ if(ep->xfer_len > 0) {
+ uint32_t fifoemptymsk = 0;
+ fifoemptymsk |= 1 << ep->num;
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+ 0, fifoemptymsk);
+ }
+ }
+ }
+ }
+ else {
+ dwc_otg_dev_out_ep_regs_t *out_regs =
+ core_if->dev_if->out_ep_regs[0];
+
+
+ depctl.d32 = dwc_read_reg32(&out_regs->doepctl);
+ deptsiz.d32 = dwc_read_reg32(&out_regs->doeptsiz);
+
+ /* Program the transfer size and packet count
+ * as follows: xfersize = N * maxpacket +
+ * short_packet pktcnt = N + (short_packet
+ * exist ? 1 : 0)
+ */
+ deptsiz.b.xfersize = ep->maxpacket;
+ deptsiz.b.pktcnt = 1;
+
+
+ if(core_if->dma_desc_enable == 0) {
+ dwc_write_reg32(&out_regs->doeptsiz, deptsiz.d32);
+ }
+ else {
+ dma_desc = core_if->dev_if->out_desc_addr;
+
+ /** DMA Descriptor Setup */
+ dma_desc->status.b.bs = BS_HOST_BUSY;
+ dma_desc->status.b.l = 1;
+ dma_desc->status.b.ioc = 1;
+ dma_desc->status.b.bytes = ep->maxpacket;
+ dma_desc->buf = ep->dma_addr;
+ dma_desc->status.b.bs = BS_HOST_READY;
+
+ /** DOEPDMA0 Register write */
+ dwc_write_reg32(&out_regs->doepdma, core_if->dev_if->dma_out_desc_addr);
+ }
+
+
+ DWC_DEBUGPL(DBG_PCDV, "IN len=%d xfersize=%d pktcnt=%d [%08x]\n",
+ ep->xfer_len,
+ deptsiz.b.xfersize, deptsiz.b.pktcnt, deptsiz.d32);
+
+ /* Write the DMA register */
+ if (core_if->hwcfg2.b.architecture == DWC_INT_DMA_ARCH) {
+ if(core_if->dma_desc_enable == 0)
+ dwc_write_reg32 (&(out_regs->doepdma), (uint32_t)ep->dma_addr);
+ }
+
+ /* EP enable, IN data in FIFO */
+ depctl.b.cnak = 1;
+ depctl.b.epena = 1;
+ dwc_write_reg32(&out_regs->doepctl, depctl.d32);
+
+ }
+}
+
+#ifdef DEBUG
+void dump_msg(const u8 *buf, unsigned int length)
+{
+ unsigned int start, num, i;
+ char line[52], *p;
+
+ if (length >= 512)
+ return;
+ start = 0;
+ while (length > 0) {
+ num = min(length, 16u);
+ p = line;
+ for (i = 0; i < num; ++i)
+ {
+ if (i == 8)
+ *p++ = ' ';
+ sprintf(p, " %02x", buf[i]);
+ p += 3;
+ }
+ *p = 0;
+ DWC_PRINT("%6x: %s\n", start, line);
+ buf += num;
+ start += num;
+ length -= num;
+ }
+}
+#else
+static inline void dump_msg(const u8 *buf, unsigned int length)
+{
+}
+#endif
+
+/**
+ * This function writes a packet into the Tx FIFO associated with the
+ * EP. For non-periodic EPs the non-periodic Tx FIFO is written. For
+ * periodic EPs the periodic Tx FIFO associated with the EP is written
+ * with all packets for the next micro-frame.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to write packet for.
+ * @param dma Indicates if DMA is being used.
+ */
+void dwc_otg_ep_write_packet(dwc_otg_core_if_t *core_if, dwc_ep_t *ep, int dma)
+{
+ /**
+ * The buffer is padded to DWORD on a per packet basis in
+ * slave/dma mode if the MPS is not DWORD aligned. The last
+ * packet, if short, is also padded to a multiple of DWORD.
+ *
+ * ep->xfer_buff always starts DWORD aligned in memory and is a
+ * multiple of DWORD in length
+ *
+ * ep->xfer_len can be any number of bytes
+ *
+ * ep->xfer_count is a multiple of ep->maxpacket until the last
+ * packet
+ *
+ * FIFO access is DWORD */
+
+ uint32_t i;
+ uint32_t byte_count;
+ uint32_t dword_count;
+ uint32_t *fifo;
+ uint32_t *data_buff = (uint32_t *)ep->xfer_buff;
+
+ DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s(%p,%p)\n", __func__, core_if, ep);
+ if (ep->xfer_count >= ep->xfer_len) {
+ DWC_WARN("%s() No data for EP%d!!!\n", __func__, ep->num);
+ return;
+ }
+
+ /* Find the byte length of the packet either short packet or MPS */
+ if ((ep->xfer_len - ep->xfer_count) < ep->maxpacket) {
+ byte_count = ep->xfer_len - ep->xfer_count;
+ }
+ else {
+ byte_count = ep->maxpacket;
+ }
+
+ /* Find the DWORD length, padded by extra bytes as neccessary if MPS
+ * is not a multiple of DWORD */
+ dword_count = (byte_count + 3) / 4;
+
+#ifdef VERBOSE
+ dump_msg(ep->xfer_buff, byte_count);
+#endif
+
+ /**@todo NGS Where are the Periodic Tx FIFO addresses
+ * intialized? What should this be? */
+
+ fifo = core_if->data_fifo[ep->num];
+
+
+ DWC_DEBUGPL((DBG_PCDV|DBG_CILV), "fifo=%p buff=%p *p=%08x bc=%d\n", fifo, data_buff, *data_buff, byte_count);
+
+ if (!dma) {
+ for (i=0; i<dword_count; i++, data_buff++) {
+ dwc_write_reg32(fifo, *data_buff);
+ }
+ }
+
+ ep->xfer_count += byte_count;
+ ep->xfer_buff += byte_count;
+ ep->dma_addr += byte_count;
+}
+
+/**
+ * Set the EP STALL.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to set the stall on.
+ */
+void dwc_otg_ep_set_stall(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ depctl_data_t depctl;
+ volatile uint32_t *depctl_addr;
+
+ DWC_DEBUGPL(DBG_PCD, "%s ep%d-%s\n", __func__, ep->num,
+ (ep->is_in?"IN":"OUT"));
+
+ DWC_PRINT("%s ep%d-%s\n", __func__, ep->num,
+ (ep->is_in?"in":"out"));
+
+ if (ep->is_in == 1) {
+ depctl_addr = &(core_if->dev_if->in_ep_regs[ep->num]->diepctl);
+ depctl.d32 = dwc_read_reg32(depctl_addr);
+
+ /* set the disable and stall bits */
+ if (depctl.b.epena) {
+ depctl.b.epdis = 1;
+ }
+ depctl.b.stall = 1;
+ dwc_write_reg32(depctl_addr, depctl.d32);
+ }
+ else {
+ depctl_addr = &(core_if->dev_if->out_ep_regs[ep->num]->doepctl);
+ depctl.d32 = dwc_read_reg32(depctl_addr);
+
+ /* set the stall bit */
+ depctl.b.stall = 1;
+ dwc_write_reg32(depctl_addr, depctl.d32);
+ }
+
+ DWC_DEBUGPL(DBG_PCD,"DEPCTL=%0x\n",dwc_read_reg32(depctl_addr));
+
+ return;
+}
+
+/**
+ * Clear the EP STALL.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to clear stall from.
+ */
+void dwc_otg_ep_clear_stall(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ depctl_data_t depctl;
+ volatile uint32_t *depctl_addr;
+
+ DWC_DEBUGPL(DBG_PCD, "%s ep%d-%s\n", __func__, ep->num,
+ (ep->is_in?"IN":"OUT"));
+
+ if (ep->is_in == 1) {
+ depctl_addr = &(core_if->dev_if->in_ep_regs[ep->num]->diepctl);
+ }
+ else {
+ depctl_addr = &(core_if->dev_if->out_ep_regs[ep->num]->doepctl);
+ }
+
+ depctl.d32 = dwc_read_reg32(depctl_addr);
+
+ /* clear the stall bits */
+ depctl.b.stall = 0;
+
+ /*
+ * USB Spec 9.4.5: For endpoints using data toggle, regardless
+ * of whether an endpoint has the Halt feature set, a
+ * ClearFeature(ENDPOINT_HALT) request always results in the
+ * data toggle being reinitialized to DATA0.
+ */
+ if (ep->type == DWC_OTG_EP_TYPE_INTR ||
+ ep->type == DWC_OTG_EP_TYPE_BULK) {
+ depctl.b.setd0pid = 1; /* DATA0 */
+ }
+
+ dwc_write_reg32(depctl_addr, depctl.d32);
+ DWC_DEBUGPL(DBG_PCD,"DEPCTL=%0x\n",dwc_read_reg32(depctl_addr));
+ return;
+}
+
+/**
+ * This function reads a packet from the Rx FIFO into the destination
+ * buffer. To read SETUP data use dwc_otg_read_setup_packet.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dest Destination buffer for the packet.
+ * @param bytes Number of bytes to copy to the destination.
+ */
+void dwc_otg_read_packet(dwc_otg_core_if_t *core_if,
+ uint8_t *dest,
+ uint16_t bytes)
+{
+ int i;
+ int word_count = (bytes + 3) / 4;
+
+ volatile uint32_t *fifo = core_if->data_fifo[0];
+ uint32_t *data_buff = (uint32_t *)dest;
+
+ /**
+ * @todo Account for the case where _dest is not dword aligned. This
+ * requires reading data from the FIFO into a uint32_t temp buffer,
+ * then moving it into the data buffer.
+ */
+
+ DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s(%p,%p,%d)\n", __func__,
+ core_if, dest, bytes);
+
+ for (i=0; i<word_count; i++, data_buff++)
+ {
+ *data_buff = dwc_read_reg32(fifo);
+ }
+
+ return;
+}
+
+
+
+/**
+ * This functions reads the device registers and prints them
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_dev_registers(dwc_otg_core_if_t *core_if)
+{
+ int i;
+ volatile uint32_t *addr;
+
+ DWC_PRINT("Device Global Registers\n");
+ addr=&core_if->dev_if->dev_global_regs->dcfg;
+ DWC_PRINT("DCFG @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->dev_global_regs->dctl;
+ DWC_PRINT("DCTL @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->dev_global_regs->dsts;
+ DWC_PRINT("DSTS @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->dev_global_regs->diepmsk;
+ DWC_PRINT("DIEPMSK @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->dev_global_regs->doepmsk;
+ DWC_PRINT("DOEPMSK @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->dev_global_regs->daint;
+ DWC_PRINT("DAINT @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->dev_global_regs->daintmsk;
+ DWC_PRINT("DAINTMSK @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->dev_global_regs->dtknqr1;
+ DWC_PRINT("DTKNQR1 @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ if (core_if->hwcfg2.b.dev_token_q_depth > 6) {
+ addr=&core_if->dev_if->dev_global_regs->dtknqr2;
+ DWC_PRINT("DTKNQR2 @0x%08X : 0x%08X\n",
+ (uint32_t)addr,dwc_read_reg32(addr));
+ }
+
+ addr=&core_if->dev_if->dev_global_regs->dvbusdis;
+ DWC_PRINT("DVBUSID @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+
+ addr=&core_if->dev_if->dev_global_regs->dvbuspulse;
+ DWC_PRINT("DVBUSPULSE @0x%08X : 0x%08X\n",
+ (uint32_t)addr,dwc_read_reg32(addr));
+
+ if (core_if->hwcfg2.b.dev_token_q_depth > 14) {
+ addr=&core_if->dev_if->dev_global_regs->dtknqr3_dthrctl;
+ DWC_PRINT("DTKNQR3_DTHRCTL @0x%08X : 0x%08X\n",
+ (uint32_t)addr, dwc_read_reg32(addr));
+ }
+/*
+ if (core_if->hwcfg2.b.dev_token_q_depth > 22) {
+ addr=&core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk;
+ DWC_PRINT("DTKNQR4 @0x%08X : 0x%08X\n",
+ (uint32_t)addr, dwc_read_reg32(addr));
+ }
+*/
+ addr=&core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk;
+ DWC_PRINT("FIFOEMPMSK @0x%08X : 0x%08X\n", (uint32_t)addr, dwc_read_reg32(addr));
+
+ addr=&core_if->dev_if->dev_global_regs->deachint;
+ DWC_PRINT("DEACHINT @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->dev_global_regs->deachintmsk;
+ DWC_PRINT("DEACHINTMSK @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+
+ for (i=0; i<= core_if->dev_if->num_in_eps; i++) {
+ addr=&core_if->dev_if->dev_global_regs->diepeachintmsk[i];
+ DWC_PRINT("DIEPEACHINTMSK[%d] @0x%08X : 0x%08X\n", i, (uint32_t)addr, dwc_read_reg32(addr));
+ }
+
+
+ for (i=0; i<= core_if->dev_if->num_out_eps; i++) {
+ addr=&core_if->dev_if->dev_global_regs->doepeachintmsk[i];
+ DWC_PRINT("DOEPEACHINTMSK[%d] @0x%08X : 0x%08X\n", i, (uint32_t)addr, dwc_read_reg32(addr));
+ }
+
+ for (i=0; i<= core_if->dev_if->num_in_eps; i++) {
+ DWC_PRINT("Device IN EP %d Registers\n", i);
+ addr=&core_if->dev_if->in_ep_regs[i]->diepctl;
+ DWC_PRINT("DIEPCTL @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->in_ep_regs[i]->diepint;
+ DWC_PRINT("DIEPINT @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->in_ep_regs[i]->dieptsiz;
+ DWC_PRINT("DIETSIZ @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->in_ep_regs[i]->diepdma;
+ DWC_PRINT("DIEPDMA @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->in_ep_regs[i]->dtxfsts;
+ DWC_PRINT("DTXFSTS @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->in_ep_regs[i]->diepdmab;
+ DWC_PRINT("DIEPDMAB @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ }
+
+
+ for (i=0; i<= core_if->dev_if->num_out_eps; i++) {
+ DWC_PRINT("Device OUT EP %d Registers\n", i);
+ addr=&core_if->dev_if->out_ep_regs[i]->doepctl;
+ DWC_PRINT("DOEPCTL @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->out_ep_regs[i]->doepfn;
+ DWC_PRINT("DOEPFN @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->out_ep_regs[i]->doepint;
+ DWC_PRINT("DOEPINT @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->out_ep_regs[i]->doeptsiz;
+ DWC_PRINT("DOETSIZ @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->out_ep_regs[i]->doepdma;
+ DWC_PRINT("DOEPDMA @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->dev_if->out_ep_regs[i]->doepdmab;
+ DWC_PRINT("DOEPDMAB @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+
+ }
+
+
+
+ return;
+}
+
+/**
+ * This functions reads the SPRAM and prints its content
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_spram(dwc_otg_core_if_t *core_if)
+{
+ volatile uint8_t *addr, *start_addr, *end_addr;
+
+ DWC_PRINT("SPRAM Data:\n");
+ start_addr = (void*)core_if->core_global_regs;
+ DWC_PRINT("Base Address: 0x%8X\n", (uint32_t)start_addr);
+ start_addr += 0x00028000;
+ end_addr=(void*)core_if->core_global_regs;
+ end_addr += 0x000280e0;
+
+ for(addr = start_addr; addr < end_addr; addr+=16)
+ {
+ DWC_PRINT("0x%8X:\t%2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X\n", (uint32_t)addr,
+ addr[0],
+ addr[1],
+ addr[2],
+ addr[3],
+ addr[4],
+ addr[5],
+ addr[6],
+ addr[7],
+ addr[8],
+ addr[9],
+ addr[10],
+ addr[11],
+ addr[12],
+ addr[13],
+ addr[14],
+ addr[15]
+ );
+ }
+
+ return;
+}
+/**
+ * This function reads the host registers and prints them
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_host_registers(dwc_otg_core_if_t *core_if)
+{
+ int i;
+ volatile uint32_t *addr;
+
+ DWC_PRINT("Host Global Registers\n");
+ addr=&core_if->host_if->host_global_regs->hcfg;
+ DWC_PRINT("HCFG @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->host_if->host_global_regs->hfir;
+ DWC_PRINT("HFIR @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->host_if->host_global_regs->hfnum;
+ DWC_PRINT("HFNUM @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->host_if->host_global_regs->hptxsts;
+ DWC_PRINT("HPTXSTS @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->host_if->host_global_regs->haint;
+ DWC_PRINT("HAINT @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->host_if->host_global_regs->haintmsk;
+ DWC_PRINT("HAINTMSK @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=core_if->host_if->hprt0;
+ DWC_PRINT("HPRT0 @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+
+ for (i=0; i<core_if->core_params->host_channels; i++)
+ {
+ DWC_PRINT("Host Channel %d Specific Registers\n", i);
+ addr=&core_if->host_if->hc_regs[i]->hcchar;
+ DWC_PRINT("HCCHAR @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->host_if->hc_regs[i]->hcsplt;
+ DWC_PRINT("HCSPLT @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->host_if->hc_regs[i]->hcint;
+ DWC_PRINT("HCINT @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->host_if->hc_regs[i]->hcintmsk;
+ DWC_PRINT("HCINTMSK @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->host_if->hc_regs[i]->hctsiz;
+ DWC_PRINT("HCTSIZ @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->host_if->hc_regs[i]->hcdma;
+ DWC_PRINT("HCDMA @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ }
+ return;
+}
+
+/**
+ * This function reads the core global registers and prints them
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_dump_global_registers(dwc_otg_core_if_t *core_if)
+{
+ int i;
+ volatile uint32_t *addr;
+
+ DWC_PRINT("Core Global Registers\n");
+ addr=&core_if->core_global_regs->gotgctl;
+ DWC_PRINT("GOTGCTL @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->gotgint;
+ DWC_PRINT("GOTGINT @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->gahbcfg;
+ DWC_PRINT("GAHBCFG @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->gusbcfg;
+ DWC_PRINT("GUSBCFG @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->grstctl;
+ DWC_PRINT("GRSTCTL @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->gintsts;
+ DWC_PRINT("GINTSTS @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->gintmsk;
+ DWC_PRINT("GINTMSK @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->grxstsr;
+ DWC_PRINT("GRXSTSR @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ //addr=&core_if->core_global_regs->grxstsp;
+ //DWC_PRINT("GRXSTSP @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->grxfsiz;
+ DWC_PRINT("GRXFSIZ @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->gnptxfsiz;
+ DWC_PRINT("GNPTXFSIZ @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->gnptxsts;
+ DWC_PRINT("GNPTXSTS @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->gi2cctl;
+ DWC_PRINT("GI2CCTL @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->gpvndctl;
+ DWC_PRINT("GPVNDCTL @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->ggpio;
+ DWC_PRINT("GGPIO @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->guid;
+ DWC_PRINT("GUID @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->gsnpsid;
+ DWC_PRINT("GSNPSID @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->ghwcfg1;
+ DWC_PRINT("GHWCFG1 @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->ghwcfg2;
+ DWC_PRINT("GHWCFG2 @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->ghwcfg3;
+ DWC_PRINT("GHWCFG3 @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->ghwcfg4;
+ DWC_PRINT("GHWCFG4 @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+ addr=&core_if->core_global_regs->hptxfsiz;
+ DWC_PRINT("HPTXFSIZ @0x%08X : 0x%08X\n",(uint32_t)addr,dwc_read_reg32(addr));
+
+ for (i=0; i<core_if->hwcfg4.b.num_dev_perio_in_ep; i++)
+ {
+ addr=&core_if->core_global_regs->dptxfsiz_dieptxf[i];
+ DWC_PRINT("DPTXFSIZ[%d] @0x%08X : 0x%08X\n",i,(uint32_t)addr,dwc_read_reg32(addr));
+ }
+}
+
+/**
+ * Flush a Tx FIFO.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param num Tx FIFO to flush.
+ */
+void dwc_otg_flush_tx_fifo(dwc_otg_core_if_t *core_if,
+ const int num)
+{
+ dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+ volatile grstctl_t greset = { .d32 = 0};
+ int count = 0;
+
+ DWC_DEBUGPL((DBG_CIL|DBG_PCDV), "Flush Tx FIFO %d\n", num);
+
+ greset.b.txfflsh = 1;
+ greset.b.txfnum = num;
+ dwc_write_reg32(&global_regs->grstctl, greset.d32);
+
+ do {
+ greset.d32 = dwc_read_reg32(&global_regs->grstctl);
+ if (++count > 10000) {
+ DWC_WARN("%s() HANG! GRSTCTL=%0x GNPTXSTS=0x%08x\n",
+ __func__, greset.d32,
+ dwc_read_reg32(&global_regs->gnptxsts));
+ break;
+ }
+ }
+ while (greset.b.txfflsh == 1);
+
+ /* Wait for 3 PHY Clocks*/
+ UDELAY(1);
+}
+
+/**
+ * Flush Rx FIFO.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+void dwc_otg_flush_rx_fifo(dwc_otg_core_if_t *core_if)
+{
+ dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+ volatile grstctl_t greset = { .d32 = 0};
+ int count = 0;
+
+ DWC_DEBUGPL((DBG_CIL|DBG_PCDV), "%s\n", __func__);
+ /*
+ *
+ */
+ greset.b.rxfflsh = 1;
+ dwc_write_reg32(&global_regs->grstctl, greset.d32);
+
+ do {
+ greset.d32 = dwc_read_reg32(&global_regs->grstctl);
+ if (++count > 10000) {
+ DWC_WARN("%s() HANG! GRSTCTL=%0x\n", __func__,
+ greset.d32);
+ break;
+ }
+ }
+ while (greset.b.rxfflsh == 1);
+
+ /* Wait for 3 PHY Clocks*/
+ UDELAY(1);
+}
+
+/**
+ * Do core a soft reset of the core. Be careful with this because it
+ * resets all the internal state machines of the core.
+ */
+void dwc_otg_core_reset(dwc_otg_core_if_t *core_if)
+{
+ dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+ volatile grstctl_t greset = { .d32 = 0};
+ int count = 0;
+
+ DWC_DEBUGPL(DBG_CILV, "%s\n", __func__);
+ /* Wait for AHB master IDLE state. */
+ do {
+ UDELAY(10);
+ greset.d32 = dwc_read_reg32(&global_regs->grstctl);
+ if (++count > 100000) {
+ DWC_WARN("%s() HANG! AHB Idle GRSTCTL=%0x\n", __func__,
+ greset.d32);
+ return;
+ }
+ }
+ while (greset.b.ahbidle == 0);
+
+ /* Core Soft Reset */
+ count = 0;
+ greset.b.csftrst = 1;
+ dwc_write_reg32(&global_regs->grstctl, greset.d32);
+ do {
+ greset.d32 = dwc_read_reg32(&global_regs->grstctl);
+ if (++count > 10000) {
+ DWC_WARN("%s() HANG! Soft Reset GRSTCTL=%0x\n", __func__,
+ greset.d32);
+ break;
+ }
+ }
+ while (greset.b.csftrst == 1);
+
+ /* Wait for 3 PHY Clocks*/
+ MDELAY(100);
+}
+
+
+
+/**
+ * Register HCD callbacks. The callbacks are used to start and stop
+ * the HCD for interrupt processing.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param cb the HCD callback structure.
+ * @param p pointer to be passed to callback function (usb_hcd*).
+ */
+void dwc_otg_cil_register_hcd_callbacks(dwc_otg_core_if_t *core_if,
+ dwc_otg_cil_callbacks_t *cb,
+ void *p)
+{
+ core_if->hcd_cb = cb;
+ cb->p = p;
+}
+
+/**
+ * Register PCD callbacks. The callbacks are used to start and stop
+ * the PCD for interrupt processing.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param cb the PCD callback structure.
+ * @param p pointer to be passed to callback function (pcd*).
+ */
+void dwc_otg_cil_register_pcd_callbacks(dwc_otg_core_if_t *core_if,
+ dwc_otg_cil_callbacks_t *cb,
+ void *p)
+{
+ core_if->pcd_cb = cb;
+ cb->p = p;
+}
+
+#ifdef DWC_EN_ISOC
+
+/**
+ * This function writes isoc data per 1 (micro)frame into tx fifo
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void write_isoc_frame_data(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ dwc_otg_dev_in_ep_regs_t *ep_regs;
+ dtxfsts_data_t txstatus = {.d32 = 0};
+ uint32_t len = 0;
+ uint32_t dwords;
+
+ ep->xfer_len = ep->data_per_frame;
+ ep->xfer_count = 0;
+
+ ep_regs = core_if->dev_if->in_ep_regs[ep->num];
+
+ len = ep->xfer_len - ep->xfer_count;
+
+ if (len > ep->maxpacket) {
+ len = ep->maxpacket;
+ }
+
+ dwords = (len + 3)/4;
+
+ /* While there is space in the queue and space in the FIFO and
+ * More data to tranfer, Write packets to the Tx FIFO */
+ txstatus.d32 = dwc_read_reg32(&core_if->dev_if->in_ep_regs[ep->num]->dtxfsts);
+ DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n",ep->num,txstatus.d32);
+
+ while (txstatus.b.txfspcavail > dwords &&
+ ep->xfer_count < ep->xfer_len &&
+ ep->xfer_len != 0) {
+ /* Write the FIFO */
+ dwc_otg_ep_write_packet(core_if, ep, 0);
+
+ len = ep->xfer_len - ep->xfer_count;
+ if (len > ep->maxpacket) {
+ len = ep->maxpacket;
+ }
+
+ dwords = (len + 3)/4;
+ txstatus.d32 = dwc_read_reg32(&core_if->dev_if->in_ep_regs[ep->num]->dtxfsts);
+ DWC_DEBUGPL(DBG_PCDV,"dtxfsts[%d]=0x%08x\n", ep->num, txstatus.d32);
+ }
+}
+
+
+/**
+ * This function initializes a descriptor chain for Isochronous transfer
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void dwc_otg_iso_ep_start_frm_transfer(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ deptsiz_data_t deptsiz = { .d32 = 0 };
+ depctl_data_t depctl = { .d32 = 0 };
+ dsts_data_t dsts = { .d32 = 0 };
+ volatile uint32_t *addr;
+
+ if(ep->is_in) {
+ addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
+ } else {
+ addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
+ }
+
+ ep->xfer_len = ep->data_per_frame;
+ ep->xfer_count = 0;
+ ep->xfer_buff = ep->cur_pkt_addr;
+ ep->dma_addr = ep->cur_pkt_dma_addr;
+
+ if(ep->is_in) {
+ /* Program the transfer size and packet count
+ * as follows: xfersize = N * maxpacket +
+ * short_packet pktcnt = N + (short_packet
+ * exist ? 1 : 0)
+ */
+ deptsiz.b.xfersize = ep->xfer_len;
+ deptsiz.b.pktcnt =
+ (ep->xfer_len - 1 + ep->maxpacket) /
+ ep->maxpacket;
+ deptsiz.b.mc = deptsiz.b.pktcnt;
+ dwc_write_reg32(&core_if->dev_if->in_ep_regs[ep->num]->dieptsiz, deptsiz.d32);
+
+ /* Write the DMA register */
+ if (core_if->dma_enable) {
+ dwc_write_reg32 (&(core_if->dev_if->in_ep_regs[ep->num]->diepdma), (uint32_t)ep->dma_addr);
+ }
+ } else {
+ deptsiz.b.pktcnt =
+ (ep->xfer_len + (ep->maxpacket - 1)) /
+ ep->maxpacket;
+ deptsiz.b.xfersize = deptsiz.b.pktcnt * ep->maxpacket;
+
+ dwc_write_reg32(&core_if->dev_if->out_ep_regs[ep->num]->doeptsiz, deptsiz.d32);
+
+ if (core_if->dma_enable) {
+ dwc_write_reg32 (&(core_if->dev_if->out_ep_regs[ep->num]->doepdma),
+ (uint32_t)ep->dma_addr);
+ }
+ }
+
+
+ /** Enable endpoint, clear nak */
+
+ depctl.d32 = 0;
+ if(ep->bInterval == 1) {
+ dsts.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dsts);
+ ep->next_frame = dsts.b.soffn + ep->bInterval;
+
+ if(ep->next_frame & 0x1) {
+ depctl.b.setd1pid = 1;
+ } else {
+ depctl.b.setd0pid = 1;
+ }
+ } else {
+ ep->next_frame += ep->bInterval;
+
+ if(ep->next_frame & 0x1) {
+ depctl.b.setd1pid = 1;
+ } else {
+ depctl.b.setd0pid = 1;
+ }
+ }
+ depctl.b.epena = 1;
+ depctl.b.cnak = 1;
+
+ dwc_modify_reg32(addr, 0, depctl.d32);
+ depctl.d32 = dwc_read_reg32(addr);
+
+ if(ep->is_in && core_if->dma_enable == 0) {
+ write_isoc_frame_data(core_if, ep);
+ }
+
+}
+
+#endif //DWC_EN_ISOC
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil.h $
+ * $Revision: 1.2 $
+ * $Date: 2008-11-21 05:39:15 $
+ * $Change: 1099526 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_CIL_H__)
+#define __DWC_CIL_H__
+
+#include <linux/workqueue.h>
+#include <linux/version.h>
+#include <asm/param.h>
+
+#include "linux/dwc_otg_plat.h"
+#include "dwc_otg_regs.h"
+#ifdef DEBUG
+#include "linux/timer.h"
+#endif
+
+/**
+ * @file
+ * This file contains the interface to the Core Interface Layer.
+ */
+
+
+/** Macros defined for DWC OTG HW Release verison */
+#define OTG_CORE_REV_2_00 0x4F542000
+#define OTG_CORE_REV_2_60a 0x4F54260A
+#define OTG_CORE_REV_2_71a 0x4F54271A
+#define OTG_CORE_REV_2_72a 0x4F54272A
+
+/**
+*/
+typedef struct iso_pkt_info
+{
+ uint32_t offset;
+ uint32_t length;
+ int32_t status;
+} iso_pkt_info_t;
+/**
+ * The <code>dwc_ep</code> structure represents the state of a single
+ * endpoint when acting in device mode. It contains the data items
+ * needed for an endpoint to be activated and transfer packets.
+ */
+typedef struct dwc_ep
+{
+ /** EP number used for register address lookup */
+ uint8_t num;
+ /** EP direction 0 = OUT */
+ unsigned is_in : 1;
+ /** EP active. */
+ unsigned active : 1;
+
+ /** Periodic Tx FIFO # for IN EPs For INTR EP set to 0 to use non-periodic Tx FIFO
+ If dedicated Tx FIFOs are enabled for all IN Eps - Tx FIFO # FOR IN EPs*/
+ unsigned tx_fifo_num : 4;
+ /** EP type: 0 - Control, 1 - ISOC, 2 - BULK, 3 - INTR */
+ unsigned type : 2;
+#define DWC_OTG_EP_TYPE_CONTROL 0
+#define DWC_OTG_EP_TYPE_ISOC 1
+#define DWC_OTG_EP_TYPE_BULK 2
+#define DWC_OTG_EP_TYPE_INTR 3
+
+ /** DATA start PID for INTR and BULK EP */
+ unsigned data_pid_start : 1;
+ /** Frame (even/odd) for ISOC EP */
+ unsigned even_odd_frame : 1;
+ /** Max Packet bytes */
+ unsigned maxpacket : 11;
+
+ /** Max Transfer size */
+ unsigned maxxfer : 16;
+
+ /** @name Transfer state */
+ /** @{ */
+
+ /**
+ * Pointer to the beginning of the transfer buffer -- do not modify
+ * during transfer.
+ */
+
+ uint32_t dma_addr;
+
+ uint32_t dma_desc_addr;
+ dwc_otg_dma_desc_t* desc_addr;
+
+
+ uint8_t *start_xfer_buff;
+ /** pointer to the transfer buffer */
+ uint8_t *xfer_buff;
+ /** Number of bytes to transfer */
+ unsigned xfer_len : 19;
+ /** Number of bytes transferred. */
+ unsigned xfer_count : 19;
+ /** Sent ZLP */
+ unsigned sent_zlp : 1;
+ /** Total len for control transfer */
+ unsigned total_len : 19;
+
+ /** stall clear flag */
+ unsigned stall_clear_flag : 1;
+
+ /** Allocated DMA Desc count */
+ uint32_t desc_cnt;
+
+#ifdef DWC_EN_ISOC
+ /**
+ * Variables specific for ISOC EPs
+ *
+ */
+ /** DMA addresses of ISOC buffers */
+ uint32_t dma_addr0;
+ uint32_t dma_addr1;
+
+ uint32_t iso_dma_desc_addr;
+ dwc_otg_dma_desc_t* iso_desc_addr;
+
+ /** pointer to the transfer buffers */
+ uint8_t *xfer_buff0;
+ uint8_t *xfer_buff1;
+
+ /** number of ISOC Buffer is processing */
+ uint32_t proc_buf_num;
+ /** Interval of ISOC Buffer processing */
+ uint32_t buf_proc_intrvl;
+ /** Data size for regular frame */
+ uint32_t data_per_frame;
+
+ /* todo - pattern data support is to be implemented in the future */
+ /** Data size for pattern frame */
+ uint32_t data_pattern_frame;
+ /** Frame number of pattern data */
+ uint32_t sync_frame;
+
+ /** bInterval */
+ uint32_t bInterval;
+ /** ISO Packet number per frame */
+ uint32_t pkt_per_frm;
+ /** Next frame num for which will be setup DMA Desc */
+ uint32_t next_frame;
+ /** Number of packets per buffer processing */
+ uint32_t pkt_cnt;
+ /** Info for all isoc packets */
+ iso_pkt_info_t *pkt_info;
+ /** current pkt number */
+ uint32_t cur_pkt;
+ /** current pkt number */
+ uint8_t *cur_pkt_addr;
+ /** current pkt number */
+ uint32_t cur_pkt_dma_addr;
+#endif //DWC_EN_ISOC
+/** @} */
+} dwc_ep_t;
+
+/*
+ * Reasons for halting a host channel.
+ */
+typedef enum dwc_otg_halt_status
+{
+ DWC_OTG_HC_XFER_NO_HALT_STATUS,
+ DWC_OTG_HC_XFER_COMPLETE,
+ DWC_OTG_HC_XFER_URB_COMPLETE,
+ DWC_OTG_HC_XFER_ACK,
+ DWC_OTG_HC_XFER_NAK,
+ DWC_OTG_HC_XFER_NYET,
+ DWC_OTG_HC_XFER_STALL,
+ DWC_OTG_HC_XFER_XACT_ERR,
+ DWC_OTG_HC_XFER_FRAME_OVERRUN,
+ DWC_OTG_HC_XFER_BABBLE_ERR,
+ DWC_OTG_HC_XFER_DATA_TOGGLE_ERR,
+ DWC_OTG_HC_XFER_AHB_ERR,
+ DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE,
+ DWC_OTG_HC_XFER_URB_DEQUEUE
+} dwc_otg_halt_status_e;
+
+/**
+ * Host channel descriptor. This structure represents the state of a single
+ * host channel when acting in host mode. It contains the data items needed to
+ * transfer packets to an endpoint via a host channel.
+ */
+typedef struct dwc_hc
+{
+ /** Host channel number used for register address lookup */
+ uint8_t hc_num;
+
+ /** Device to access */
+ unsigned dev_addr : 7;
+
+ /** EP to access */
+ unsigned ep_num : 4;
+
+ /** EP direction. 0: OUT, 1: IN */
+ unsigned ep_is_in : 1;
+
+ /**
+ * EP speed.
+ * One of the following values:
+ * - DWC_OTG_EP_SPEED_LOW
+ * - DWC_OTG_EP_SPEED_FULL
+ * - DWC_OTG_EP_SPEED_HIGH
+ */
+ unsigned speed : 2;
+#define DWC_OTG_EP_SPEED_LOW 0
+#define DWC_OTG_EP_SPEED_FULL 1
+#define DWC_OTG_EP_SPEED_HIGH 2
+
+ /**
+ * Endpoint type.
+ * One of the following values:
+ * - DWC_OTG_EP_TYPE_CONTROL: 0
+ * - DWC_OTG_EP_TYPE_ISOC: 1
+ * - DWC_OTG_EP_TYPE_BULK: 2
+ * - DWC_OTG_EP_TYPE_INTR: 3
+ */
+ unsigned ep_type : 2;
+
+ /** Max packet size in bytes */
+ unsigned max_packet : 11;
+
+ /**
+ * PID for initial transaction.
+ * 0: DATA0,<br>
+ * 1: DATA2,<br>
+ * 2: DATA1,<br>
+ * 3: MDATA (non-Control EP),
+ * SETUP (Control EP)
+ */
+ unsigned data_pid_start : 2;
+#define DWC_OTG_HC_PID_DATA0 0
+#define DWC_OTG_HC_PID_DATA2 1
+#define DWC_OTG_HC_PID_DATA1 2
+#define DWC_OTG_HC_PID_MDATA 3
+#define DWC_OTG_HC_PID_SETUP 3
+
+ /** Number of periodic transactions per (micro)frame */
+ unsigned multi_count: 2;
+
+ /** @name Transfer State */
+ /** @{ */
+
+ /** Pointer to the current transfer buffer position. */
+ uint8_t *xfer_buff;
+ /** Total number of bytes to transfer. */
+ uint32_t xfer_len;
+ /** Number of bytes transferred so far. */
+ uint32_t xfer_count;
+ /** Packet count at start of transfer.*/
+ uint16_t start_pkt_count;
+
+ /**
+ * Flag to indicate whether the transfer has been started. Set to 1 if
+ * it has been started, 0 otherwise.
+ */
+ uint8_t xfer_started;
+
+ /**
+ * Set to 1 to indicate that a PING request should be issued on this
+ * channel. If 0, process normally.
+ */
+ uint8_t do_ping;
+
+ /**
+ * Set to 1 to indicate that the error count for this transaction is
+ * non-zero. Set to 0 if the error count is 0.
+ */
+ uint8_t error_state;
+
+ /**
+ * Set to 1 to indicate that this channel should be halted the next
+ * time a request is queued for the channel. This is necessary in
+ * slave mode if no request queue space is available when an attempt
+ * is made to halt the channel.
+ */
+ uint8_t halt_on_queue;
+
+ /**
+ * Set to 1 if the host channel has been halted, but the core is not
+ * finished flushing queued requests. Otherwise 0.
+ */
+ uint8_t halt_pending;
+
+ /**
+ * Reason for halting the host channel.
+ */
+ dwc_otg_halt_status_e halt_status;
+
+ /*
+ * Split settings for the host channel
+ */
+ uint8_t do_split; /**< Enable split for the channel */
+ uint8_t complete_split; /**< Enable complete split */
+ uint8_t hub_addr; /**< Address of high speed hub */
+
+ uint8_t port_addr; /**< Port of the low/full speed device */
+ /** Split transaction position
+ * One of the following values:
+ * - DWC_HCSPLIT_XACTPOS_MID
+ * - DWC_HCSPLIT_XACTPOS_BEGIN
+ * - DWC_HCSPLIT_XACTPOS_END
+ * - DWC_HCSPLIT_XACTPOS_ALL */
+ uint8_t xact_pos;
+
+ /** Set when the host channel does a short read. */
+ uint8_t short_read;
+
+ /**
+ * Number of requests issued for this channel since it was assigned to
+ * the current transfer (not counting PINGs).
+ */
+ uint8_t requests;
+
+ /**
+ * Queue Head for the transfer being processed by this channel.
+ */
+ struct dwc_otg_qh *qh;
+
+ /** @} */
+
+ /** Entry in list of host channels. */
+ struct list_head hc_list_entry;
+} dwc_hc_t;
+
+/**
+ * The following parameters may be specified when starting the module. These
+ * parameters define how the DWC_otg controller should be configured.
+ * Parameter values are passed to the CIL initialization function
+ * dwc_otg_cil_init.
+ */
+typedef struct dwc_otg_core_params
+{
+ int32_t opt;
+#define dwc_param_opt_default 1
+
+ /**
+ * Specifies the OTG capabilities. The driver will automatically
+ * detect the value for this parameter if none is specified.
+ * 0 - HNP and SRP capable (default)
+ * 1 - SRP Only capable
+ * 2 - No HNP/SRP capable
+ */
+ int32_t otg_cap;
+#define DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE 0
+#define DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE 1
+#define DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE 2
+#define dwc_param_otg_cap_default DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE
+
+ /**
+ * Specifies whether to use slave or DMA mode for accessing the data
+ * FIFOs. The driver will automatically detect the value for this
+ * parameter if none is specified.
+ * 0 - Slave
+ * 1 - DMA (default, if available)
+ */
+ int32_t dma_enable;
+#define dwc_param_dma_enable_default 1
+
+ /**
+ * When DMA mode is enabled specifies whether to use address DMA or DMA Descritor mode for accessing the data
+ * FIFOs in device mode. The driver will automatically detect the value for this
+ * parameter if none is specified.
+ * 0 - address DMA
+ * 1 - DMA Descriptor(default, if available)
+ */
+ int32_t dma_desc_enable;
+#define dwc_param_dma_desc_enable_default 0
+ /** The DMA Burst size (applicable only for External DMA
+ * Mode). 1, 4, 8 16, 32, 64, 128, 256 (default 32)
+ */
+ int32_t dma_burst_size; /* Translate this to GAHBCFG values */
+#define dwc_param_dma_burst_size_default 32
+
+ /**
+ * Specifies the maximum speed of operation in host and device mode.
+ * The actual speed depends on the speed of the attached device and
+ * the value of phy_type. The actual speed depends on the speed of the
+ * attached device.
+ * 0 - High Speed (default)
+ * 1 - Full Speed
+ */
+ int32_t speed;
+#define dwc_param_speed_default 0
+#define DWC_SPEED_PARAM_HIGH 0
+#define DWC_SPEED_PARAM_FULL 1
+
+ /** Specifies whether low power mode is supported when attached
+ * to a Full Speed or Low Speed device in host mode.
+ * 0 - Don't support low power mode (default)
+ * 1 - Support low power mode
+ */
+ int32_t host_support_fs_ls_low_power;
+#define dwc_param_host_support_fs_ls_low_power_default 0
+
+ /** Specifies the PHY clock rate in low power mode when connected to a
+ * Low Speed device in host mode. This parameter is applicable only if
+ * HOST_SUPPORT_FS_LS_LOW_POWER is enabled. If PHY_TYPE is set to FS
+ * then defaults to 6 MHZ otherwise 48 MHZ.
+ *
+ * 0 - 48 MHz
+ * 1 - 6 MHz
+ */
+ int32_t host_ls_low_power_phy_clk;
+#define dwc_param_host_ls_low_power_phy_clk_default 0
+#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ 0
+#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ 1
+
+ /**
+ * 0 - Use cC FIFO size parameters
+ * 1 - Allow dynamic FIFO sizing (default)
+ */
+ int32_t enable_dynamic_fifo;
+#define dwc_param_enable_dynamic_fifo_default 1
+
+ /** Total number of 4-byte words in the data FIFO memory. This
+ * memory includes the Rx FIFO, non-periodic Tx FIFO, and periodic
+ * Tx FIFOs.
+ * 32 to 32768 (default 8192)
+ * Note: The total FIFO memory depth in the FPGA configuration is 8192.
+ */
+ int32_t data_fifo_size;
+#define dwc_param_data_fifo_size_default 8192
+
+ /** Number of 4-byte words in the Rx FIFO in device mode when dynamic
+ * FIFO sizing is enabled.
+ * 16 to 32768 (default 1064)
+ */
+ int32_t dev_rx_fifo_size;
+#define dwc_param_dev_rx_fifo_size_default 1064
+
+ /** Number of 4-byte words in the non-periodic Tx FIFO in device mode
+ * when dynamic FIFO sizing is enabled.
+ * 16 to 32768 (default 1024)
+ */
+ int32_t dev_nperio_tx_fifo_size;
+#define dwc_param_dev_nperio_tx_fifo_size_default 1024
+
+ /** Number of 4-byte words in each of the periodic Tx FIFOs in device
+ * mode when dynamic FIFO sizing is enabled.
+ * 4 to 768 (default 256)
+ */
+ uint32_t dev_perio_tx_fifo_size[MAX_PERIO_FIFOS];
+#define dwc_param_dev_perio_tx_fifo_size_default 256
+
+ /** Number of 4-byte words in the Rx FIFO in host mode when dynamic
+ * FIFO sizing is enabled.
+ * 16 to 32768 (default 1024)
+ */
+ int32_t host_rx_fifo_size;
+#define dwc_param_host_rx_fifo_size_default 1024
+
+ /** Number of 4-byte words in the non-periodic Tx FIFO in host mode
+ * when Dynamic FIFO sizing is enabled in the core.
+ * 16 to 32768 (default 1024)
+ */
+ int32_t host_nperio_tx_fifo_size;
+#define dwc_param_host_nperio_tx_fifo_size_default 1024
+
+ /** Number of 4-byte words in the host periodic Tx FIFO when dynamic
+ * FIFO sizing is enabled.
+ * 16 to 32768 (default 1024)
+ */
+ int32_t host_perio_tx_fifo_size;
+#define dwc_param_host_perio_tx_fifo_size_default 1024
+
+ /** The maximum transfer size supported in bytes.
+ * 2047 to 65,535 (default 65,535)
+ */
+ int32_t max_transfer_size;
+#define dwc_param_max_transfer_size_default 65535
+
+ /** The maximum number of packets in a transfer.
+ * 15 to 511 (default 511)
+ */
+ int32_t max_packet_count;
+#define dwc_param_max_packet_count_default 511
+
+ /** The number of host channel registers to use.
+ * 1 to 16 (default 12)
+ * Note: The FPGA configuration supports a maximum of 12 host channels.
+ */
+ int32_t host_channels;
+#define dwc_param_host_channels_default 12
+
+ /** The number of endpoints in addition to EP0 available for device
+ * mode operations.
+ * 1 to 15 (default 6 IN and OUT)
+ * Note: The FPGA configuration supports a maximum of 6 IN and OUT
+ * endpoints in addition to EP0.
+ */
+ int32_t dev_endpoints;
+#define dwc_param_dev_endpoints_default 6
+
+ /**
+ * Specifies the type of PHY interface to use. By default, the driver
+ * will automatically detect the phy_type.
+ *
+ * 0 - Full Speed PHY
+ * 1 - UTMI+ (default)
+ * 2 - ULPI
+ */
+ int32_t phy_type;
+#define DWC_PHY_TYPE_PARAM_FS 0
+#define DWC_PHY_TYPE_PARAM_UTMI 1
+#define DWC_PHY_TYPE_PARAM_ULPI 2
+#define dwc_param_phy_type_default DWC_PHY_TYPE_PARAM_UTMI
+
+ /**
+ * Specifies the UTMI+ Data Width. This parameter is
+ * applicable for a PHY_TYPE of UTMI+ or ULPI. (For a ULPI
+ * PHY_TYPE, this parameter indicates the data width between
+ * the MAC and the ULPI Wrapper.) Also, this parameter is
+ * applicable only if the OTG_HSPHY_WIDTH cC parameter was set
+ * to "8 and 16 bits", meaning that the core has been
+ * configured to work at either data path width.
+ *
+ * 8 or 16 bits (default 16)
+ */
+ int32_t phy_utmi_width;
+#define dwc_param_phy_utmi_width_default 16
+
+ /**
+ * Specifies whether the ULPI operates at double or single
+ * data rate. This parameter is only applicable if PHY_TYPE is
+ * ULPI.
+ *
+ * 0 - single data rate ULPI interface with 8 bit wide data
+ * bus (default)
+ * 1 - double data rate ULPI interface with 4 bit wide data
+ * bus
+ */
+ int32_t phy_ulpi_ddr;
+#define dwc_param_phy_ulpi_ddr_default 0
+
+ /**
+ * Specifies whether to use the internal or external supply to
+ * drive the vbus with a ULPI phy.
+ */
+ int32_t phy_ulpi_ext_vbus;
+#define DWC_PHY_ULPI_INTERNAL_VBUS 0
+#define DWC_PHY_ULPI_EXTERNAL_VBUS 1
+#define dwc_param_phy_ulpi_ext_vbus_default DWC_PHY_ULPI_INTERNAL_VBUS
+
+ /**
+ * Specifies whether to use the I2Cinterface for full speed PHY. This
+ * parameter is only applicable if PHY_TYPE is FS.
+ * 0 - No (default)
+ * 1 - Yes
+ */
+ int32_t i2c_enable;
+#define dwc_param_i2c_enable_default 0
+
+ int32_t ulpi_fs_ls;
+#define dwc_param_ulpi_fs_ls_default 0
+
+ int32_t ts_dline;
+#define dwc_param_ts_dline_default 0
+
+ /**
+ * Specifies whether dedicated transmit FIFOs are
+ * enabled for non periodic IN endpoints in device mode
+ * 0 - No
+ * 1 - Yes
+ */
+ int32_t en_multiple_tx_fifo;
+#define dwc_param_en_multiple_tx_fifo_default 1
+
+ /** Number of 4-byte words in each of the Tx FIFOs in device
+ * mode when dynamic FIFO sizing is enabled.
+ * 4 to 768 (default 256)
+ */
+ uint32_t dev_tx_fifo_size[MAX_TX_FIFOS];
+#define dwc_param_dev_tx_fifo_size_default 256
+
+ /** Thresholding enable flag-
+ * bit 0 - enable non-ISO Tx thresholding
+ * bit 1 - enable ISO Tx thresholding
+ * bit 2 - enable Rx thresholding
+ */
+ uint32_t thr_ctl;
+#define dwc_param_thr_ctl_default 0
+
+ /** Thresholding length for Tx
+ * FIFOs in 32 bit DWORDs
+ */
+ uint32_t tx_thr_length;
+#define dwc_param_tx_thr_length_default 64
+
+ /** Thresholding length for Rx
+ * FIFOs in 32 bit DWORDs
+ */
+ uint32_t rx_thr_length;
+#define dwc_param_rx_thr_length_default 64
+
+ /** Per Transfer Interrupt
+ * mode enable flag
+ * 1 - Enabled
+ * 0 - Disabled
+ */
+ uint32_t pti_enable;
+#define dwc_param_pti_enable_default 0
+
+ /** Molti Processor Interrupt
+ * mode enable flag
+ * 1 - Enabled
+ * 0 - Disabled
+ */
+ uint32_t mpi_enable;
+#define dwc_param_mpi_enable_default 0
+
+} dwc_otg_core_params_t;
+
+#ifdef DEBUG
+struct dwc_otg_core_if;
+typedef struct hc_xfer_info
+{
+ struct dwc_otg_core_if *core_if;
+ dwc_hc_t *hc;
+} hc_xfer_info_t;
+#endif
+
+/**
+ * The <code>dwc_otg_core_if</code> structure contains information needed to manage
+ * the DWC_otg controller acting in either host or device mode. It
+ * represents the programming view of the controller as a whole.
+ */
+typedef struct dwc_otg_core_if
+{
+ /** Parameters that define how the core should be configured.*/
+ dwc_otg_core_params_t *core_params;
+
+ /** Core Global registers starting at offset 000h. */
+ dwc_otg_core_global_regs_t *core_global_regs;
+
+ /** Device-specific information */
+ dwc_otg_dev_if_t *dev_if;
+ /** Host-specific information */
+ dwc_otg_host_if_t *host_if;
+
+ /** Value from SNPSID register */
+ uint32_t snpsid;
+
+ /*
+ * Set to 1 if the core PHY interface bits in USBCFG have been
+ * initialized.
+ */
+ uint8_t phy_init_done;
+
+ /*
+ * SRP Success flag, set by srp success interrupt in FS I2C mode
+ */
+ uint8_t srp_success;
+ uint8_t srp_timer_started;
+
+ /* Common configuration information */
+ /** Power and Clock Gating Control Register */
+ volatile uint32_t *pcgcctl;
+#define DWC_OTG_PCGCCTL_OFFSET 0xE00
+
+ /** Push/pop addresses for endpoints or host channels.*/
+ uint32_t *data_fifo[MAX_EPS_CHANNELS];
+#define DWC_OTG_DATA_FIFO_OFFSET 0x1000
+#define DWC_OTG_DATA_FIFO_SIZE 0x1000
+
+ /** Total RAM for FIFOs (Bytes) */
+ uint16_t total_fifo_size;
+ /** Size of Rx FIFO (Bytes) */
+ uint16_t rx_fifo_size;
+ /** Size of Non-periodic Tx FIFO (Bytes) */
+ uint16_t nperio_tx_fifo_size;
+
+
+ /** 1 if DMA is enabled, 0 otherwise. */
+ uint8_t dma_enable;
+
+ /** 1 if Descriptor DMA mode is enabled, 0 otherwise. */
+ uint8_t dma_desc_enable;
+
+ /** 1 if PTI Enhancement mode is enabled, 0 otherwise. */
+ uint8_t pti_enh_enable;
+
+ /** 1 if MPI Enhancement mode is enabled, 0 otherwise. */
+ uint8_t multiproc_int_enable;
+
+ /** 1 if dedicated Tx FIFOs are enabled, 0 otherwise. */
+ uint8_t en_multiple_tx_fifo;
+
+ /** Set to 1 if multiple packets of a high-bandwidth transfer is in
+ * process of being queued */
+ uint8_t queuing_high_bandwidth;
+
+ /** Hardware Configuration -- stored here for convenience.*/
+ hwcfg1_data_t hwcfg1;
+ hwcfg2_data_t hwcfg2;
+ hwcfg3_data_t hwcfg3;
+ hwcfg4_data_t hwcfg4;
+
+ /** Host and Device Configuration -- stored here for convenience.*/
+ hcfg_data_t hcfg;
+ dcfg_data_t dcfg;
+
+ /** The operational State, during transations
+ * (a_host>>a_peripherial and b_device=>b_host) this may not
+ * match the core but allows the software to determine
+ * transitions.
+ */
+ uint8_t op_state;
+
+ /**
+ * Set to 1 if the HCD needs to be restarted on a session request
+ * interrupt. This is required if no connector ID status change has
+ * occurred since the HCD was last disconnected.
+ */
+ uint8_t restart_hcd_on_session_req;
+
+ /** HCD callbacks */
+ /** A-Device is a_host */
+#define A_HOST (1)
+ /** A-Device is a_suspend */
+#define A_SUSPEND (2)
+ /** A-Device is a_peripherial */
+#define A_PERIPHERAL (3)
+ /** B-Device is operating as a Peripheral. */
+#define B_PERIPHERAL (4)
+ /** B-Device is operating as a Host. */
+#define B_HOST (5)
+
+ /** HCD callbacks */
+ struct dwc_otg_cil_callbacks *hcd_cb;
+ /** PCD callbacks */
+ struct dwc_otg_cil_callbacks *pcd_cb;
+
+ /** Device mode Periodic Tx FIFO Mask */
+ uint32_t p_tx_msk;
+ /** Device mode Periodic Tx FIFO Mask */
+ uint32_t tx_msk;
+
+ /** Workqueue object used for handling several interrupts */
+ struct workqueue_struct *wq_otg;
+
+ /** Work object used for handling "Connector ID Status Change" Interrupt */
+ struct work_struct w_conn_id;
+
+ /** Work object used for handling "Wakeup Detected" Interrupt */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ struct work_struct w_wkp;
+#else
+ struct delayed_work w_wkp;
+#endif
+
+#ifdef DEBUG
+ uint32_t start_hcchar_val[MAX_EPS_CHANNELS];
+
+ hc_xfer_info_t hc_xfer_info[MAX_EPS_CHANNELS];
+ struct timer_list hc_xfer_timer[MAX_EPS_CHANNELS];
+
+ uint32_t hfnum_7_samples;
+ uint64_t hfnum_7_frrem_accum;
+ uint32_t hfnum_0_samples;
+ uint64_t hfnum_0_frrem_accum;
+ uint32_t hfnum_other_samples;
+ uint64_t hfnum_other_frrem_accum;
+#endif
+
+
+} dwc_otg_core_if_t;
+
+/*We must clear S3C24XX_EINTPEND external interrupt register
+ * because after clearing in this register trigerred IRQ from
+ * H/W core in kernel interrupt can be occured again before OTG
+ * handlers clear all IRQ sources of Core registers because of
+ * timing latencies and Low Level IRQ Type.
+ */
+
+#ifdef CONFIG_MACH_IPMATE
+#define S3C2410X_CLEAR_EINTPEND() \
+do { \
+ if (!dwc_otg_read_core_intr(core_if)) { \
+ __raw_writel(1UL << 11,S3C24XX_EINTPEND); \
+ } \
+} while (0)
+#else
+#define S3C2410X_CLEAR_EINTPEND() do { } while (0)
+#endif
+
+/*
+ * The following functions are functions for works
+ * using during handling some interrupts
+ */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+
+extern void w_conn_id_status_change(void *p);
+extern void w_wakeup_detected(void *p);
+
+#else
+
+extern void w_conn_id_status_change(struct work_struct *p);
+extern void w_wakeup_detected(struct work_struct *p);
+
+#endif
+
+
+/*
+ * The following functions support initialization of the CIL driver component
+ * and the DWC_otg controller.
+ */
+extern dwc_otg_core_if_t *dwc_otg_cil_init(const uint32_t *_reg_base_addr,
+ dwc_otg_core_params_t *_core_params);
+extern void dwc_otg_cil_remove(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_core_init(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_core_host_init(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_core_dev_init(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_enable_global_interrupts( dwc_otg_core_if_t *_core_if );
+extern void dwc_otg_disable_global_interrupts( dwc_otg_core_if_t *_core_if );
+
+/** @name Device CIL Functions
+ * The following functions support managing the DWC_otg controller in device
+ * mode.
+ */
+/**@{*/
+extern void dwc_otg_wakeup(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_read_setup_packet (dwc_otg_core_if_t *_core_if, uint32_t *_dest);
+extern uint32_t dwc_otg_get_frame_number(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_ep0_activate(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep_activate(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep_deactivate(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep_start_transfer(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep_start_zl_transfer(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep0_start_transfer(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep0_continue_transfer(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep_write_packet(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep, int _dma);
+extern void dwc_otg_ep_set_stall(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_ep_clear_stall(dwc_otg_core_if_t *_core_if, dwc_ep_t *_ep);
+extern void dwc_otg_enable_device_interrupts(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_dump_dev_registers(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_dump_spram(dwc_otg_core_if_t *_core_if);
+#ifdef DWC_EN_ISOC
+extern void dwc_otg_iso_ep_start_frm_transfer(dwc_otg_core_if_t *core_if, dwc_ep_t *ep);
+extern void dwc_otg_iso_ep_start_buf_transfer(dwc_otg_core_if_t *core_if, dwc_ep_t *ep);
+#endif //DWC_EN_ISOC
+/**@}*/
+
+/** @name Host CIL Functions
+ * The following functions support managing the DWC_otg controller in host
+ * mode.
+ */
+/**@{*/
+extern void dwc_otg_hc_init(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc);
+extern void dwc_otg_hc_halt(dwc_otg_core_if_t *_core_if,
+ dwc_hc_t *_hc,
+ dwc_otg_halt_status_e _halt_status);
+extern void dwc_otg_hc_cleanup(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc);
+extern void dwc_otg_hc_start_transfer(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc);
+extern int dwc_otg_hc_continue_transfer(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc);
+extern void dwc_otg_hc_do_ping(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc);
+extern void dwc_otg_hc_write_packet(dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc);
+extern void dwc_otg_enable_host_interrupts(dwc_otg_core_if_t *_core_if);
+extern void dwc_otg_disable_host_interrupts(dwc_otg_core_if_t *_core_if);
+
+/**
+ * This function Reads HPRT0 in preparation to modify. It keeps the
+ * WC bits 0 so that if they are read as 1, they won't clear when you
+ * write it back
+ */
+static inline uint32_t dwc_otg_read_hprt0(dwc_otg_core_if_t *_core_if)
+{
+ hprt0_data_t hprt0;
+ hprt0.d32 = dwc_read_reg32(_core_if->host_if->hprt0);
+ hprt0.b.prtena = 0;
+ hprt0.b.prtconndet = 0;
+ hprt0.b.prtenchng = 0;
+ hprt0.b.prtovrcurrchng = 0;
+ return hprt0.d32;
+}
+
+extern void dwc_otg_dump_host_registers(dwc_otg_core_if_t *_core_if);
+/**@}*/
+
+/** @name Common CIL Functions
+ * The following functions support managing the DWC_otg controller in either
+ * device or host mode.
+ */
+/**@{*/
+
+extern void dwc_otg_read_packet(dwc_otg_core_if_t *core_if,
+ uint8_t *dest,
+ uint16_t bytes);
+
+extern void dwc_otg_dump_global_registers(dwc_otg_core_if_t *_core_if);
+
+extern void dwc_otg_flush_tx_fifo( dwc_otg_core_if_t *_core_if,
+ const int _num );
+extern void dwc_otg_flush_rx_fifo( dwc_otg_core_if_t *_core_if );
+extern void dwc_otg_core_reset( dwc_otg_core_if_t *_core_if );
+
+extern dwc_otg_dma_desc_t* dwc_otg_ep_alloc_desc_chain(uint32_t * dma_desc_addr, uint32_t count);
+extern void dwc_otg_ep_free_desc_chain(dwc_otg_dma_desc_t* desc_addr, uint32_t dma_desc_addr, uint32_t count);
+
+/**
+ * This function returns the Core Interrupt register.
+ */
+static inline uint32_t dwc_otg_read_core_intr(dwc_otg_core_if_t *_core_if)
+{
+ return (dwc_read_reg32(&_core_if->core_global_regs->gintsts) &
+ dwc_read_reg32(&_core_if->core_global_regs->gintmsk));
+}
+
+/**
+ * This function returns the OTG Interrupt register.
+ */
+static inline uint32_t dwc_otg_read_otg_intr (dwc_otg_core_if_t *_core_if)
+{
+ return (dwc_read_reg32 (&_core_if->core_global_regs->gotgint));
+}
+
+/**
+ * This function reads the Device All Endpoints Interrupt register and
+ * returns the IN endpoint interrupt bits.
+ */
+static inline uint32_t dwc_otg_read_dev_all_in_ep_intr(dwc_otg_core_if_t *core_if)
+{
+ uint32_t v;
+
+ if(core_if->multiproc_int_enable) {
+ v = dwc_read_reg32(&core_if->dev_if->dev_global_regs->deachint) &
+ dwc_read_reg32(&core_if->dev_if->dev_global_regs->deachintmsk);
+ } else {
+ v = dwc_read_reg32(&core_if->dev_if->dev_global_regs->daint) &
+ dwc_read_reg32(&core_if->dev_if->dev_global_regs->daintmsk);
+ }
+ return (v & 0xffff);
+
+}
+
+/**
+ * This function reads the Device All Endpoints Interrupt register and
+ * returns the OUT endpoint interrupt bits.
+ */
+static inline uint32_t dwc_otg_read_dev_all_out_ep_intr(dwc_otg_core_if_t *core_if)
+{
+ uint32_t v;
+
+ if(core_if->multiproc_int_enable) {
+ v = dwc_read_reg32(&core_if->dev_if->dev_global_regs->deachint) &
+ dwc_read_reg32(&core_if->dev_if->dev_global_regs->deachintmsk);
+ } else {
+ v = dwc_read_reg32(&core_if->dev_if->dev_global_regs->daint) &
+ dwc_read_reg32(&core_if->dev_if->dev_global_regs->daintmsk);
+ }
+
+ return ((v & 0xffff0000) >> 16);
+}
+
+/**
+ * This function returns the Device IN EP Interrupt register
+ */
+static inline uint32_t dwc_otg_read_dev_in_ep_intr(dwc_otg_core_if_t *core_if,
+ dwc_ep_t *ep)
+{
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+ uint32_t v, msk, emp;
+
+ if(core_if->multiproc_int_enable) {
+ msk = dwc_read_reg32(&dev_if->dev_global_regs->diepeachintmsk[ep->num]);
+ emp = dwc_read_reg32(&dev_if->dev_global_regs->dtknqr4_fifoemptymsk);
+ msk |= ((emp >> ep->num) & 0x1) << 7;
+ v = dwc_read_reg32(&dev_if->in_ep_regs[ep->num]->diepint) & msk;
+ } else {
+ msk = dwc_read_reg32(&dev_if->dev_global_regs->diepmsk);
+ emp = dwc_read_reg32(&dev_if->dev_global_regs->dtknqr4_fifoemptymsk);
+ msk |= ((emp >> ep->num) & 0x1) << 7;
+ v = dwc_read_reg32(&dev_if->in_ep_regs[ep->num]->diepint) & msk;
+ }
+
+
+ return v;
+}
+/**
+ * This function returns the Device OUT EP Interrupt register
+ */
+static inline uint32_t dwc_otg_read_dev_out_ep_intr(dwc_otg_core_if_t *_core_if,
+ dwc_ep_t *_ep)
+{
+ dwc_otg_dev_if_t *dev_if = _core_if->dev_if;
+ uint32_t v;
+ doepmsk_data_t msk = { .d32 = 0 };
+
+ if(_core_if->multiproc_int_enable) {
+ msk.d32 = dwc_read_reg32(&dev_if->dev_global_regs->doepeachintmsk[_ep->num]);
+ if(_core_if->pti_enh_enable) {
+ msk.b.pktdrpsts = 1;
+ }
+ v = dwc_read_reg32( &dev_if->out_ep_regs[_ep->num]->doepint) & msk.d32;
+ } else {
+ msk.d32 = dwc_read_reg32(&dev_if->dev_global_regs->doepmsk);
+ if(_core_if->pti_enh_enable) {
+ msk.b.pktdrpsts = 1;
+ }
+ v = dwc_read_reg32( &dev_if->out_ep_regs[_ep->num]->doepint) & msk.d32;
+ }
+ return v;
+}
+
+/**
+ * This function returns the Host All Channel Interrupt register
+ */
+static inline uint32_t dwc_otg_read_host_all_channels_intr (dwc_otg_core_if_t *_core_if)
+{
+ return (dwc_read_reg32 (&_core_if->host_if->host_global_regs->haint));
+}
+
+static inline uint32_t dwc_otg_read_host_channel_intr (dwc_otg_core_if_t *_core_if, dwc_hc_t *_hc)
+{
+ return (dwc_read_reg32 (&_core_if->host_if->hc_regs[_hc->hc_num]->hcint));
+}
+
+
+/**
+ * This function returns the mode of the operation, host or device.
+ *
+ * @return 0 - Device Mode, 1 - Host Mode
+ */
+static inline uint32_t dwc_otg_mode(dwc_otg_core_if_t *_core_if)
+{
+ return (dwc_read_reg32( &_core_if->core_global_regs->gintsts ) & 0x1);
+}
+
+static inline uint8_t dwc_otg_is_device_mode(dwc_otg_core_if_t *_core_if)
+{
+ return (dwc_otg_mode(_core_if) != DWC_HOST_MODE);
+}
+static inline uint8_t dwc_otg_is_host_mode(dwc_otg_core_if_t *_core_if)
+{
+ return (dwc_otg_mode(_core_if) == DWC_HOST_MODE);
+}
+
+extern int32_t dwc_otg_handle_common_intr( dwc_otg_core_if_t *_core_if );
+
+
+/**@}*/
+
+/**
+ * DWC_otg CIL callback structure. This structure allows the HCD and
+ * PCD to register functions used for starting and stopping the PCD
+ * and HCD for role change on for a DRD.
+ */
+typedef struct dwc_otg_cil_callbacks
+{
+ /** Start function for role change */
+ int (*start) (void *_p);
+ /** Stop Function for role change */
+ int (*stop) (void *_p);
+ /** Disconnect Function for role change */
+ int (*disconnect) (void *_p);
+ /** Resume/Remote wakeup Function */
+ int (*resume_wakeup) (void *_p);
+ /** Suspend function */
+ int (*suspend) (void *_p);
+ /** Session Start (SRP) */
+ int (*session_start) (void *_p);
+ /** Pointer passed to start() and stop() */
+ void *p;
+} dwc_otg_cil_callbacks_t;
+
+extern void dwc_otg_cil_register_pcd_callbacks( dwc_otg_core_if_t *_core_if,
+ dwc_otg_cil_callbacks_t *_cb,
+ void *_p);
+extern void dwc_otg_cil_register_hcd_callbacks( dwc_otg_core_if_t *_core_if,
+ dwc_otg_cil_callbacks_t *_cb,
+ void *_p);
+
+#endif
+
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil_intr.c $
+ * $Revision: 1.2 $
+ * $Date: 2008-11-21 05:39:15 $
+ * $Change: 1065567 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ *
+ * The Core Interface Layer provides basic services for accessing and
+ * managing the DWC_otg hardware. These services are used by both the
+ * Host Controller Driver and the Peripheral Controller Driver.
+ *
+ * This file contains the Common Interrupt handlers.
+ */
+#include "linux/dwc_otg_plat.h"
+#include "dwc_otg_regs.h"
+#include "dwc_otg_cil.h"
+
+#ifdef DEBUG
+inline const char *op_state_str(dwc_otg_core_if_t *core_if)
+{
+ return (core_if->op_state==A_HOST?"a_host":
+ (core_if->op_state==A_SUSPEND?"a_suspend":
+ (core_if->op_state==A_PERIPHERAL?"a_peripheral":
+ (core_if->op_state==B_PERIPHERAL?"b_peripheral":
+ (core_if->op_state==B_HOST?"b_host":
+ "unknown")))));
+}
+#endif
+
+/** This function will log a debug message
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_mode_mismatch_intr (dwc_otg_core_if_t *core_if)
+{
+ gintsts_data_t gintsts;
+ DWC_WARN("Mode Mismatch Interrupt: currently in %s mode\n",
+ dwc_otg_mode(core_if) ? "Host" : "Device");
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.modemismatch = 1;
+ dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32);
+ return 1;
+}
+
+/** Start the HCD. Helper function for using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void hcd_start(dwc_otg_core_if_t *core_if)
+{
+ if (core_if->hcd_cb && core_if->hcd_cb->start) {
+ core_if->hcd_cb->start(core_if->hcd_cb->p);
+ }
+}
+/** Stop the HCD. Helper function for using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void hcd_stop(dwc_otg_core_if_t *core_if)
+{
+ if (core_if->hcd_cb && core_if->hcd_cb->stop) {
+ core_if->hcd_cb->stop(core_if->hcd_cb->p);
+ }
+}
+/** Disconnect the HCD. Helper function for using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void hcd_disconnect(dwc_otg_core_if_t *core_if)
+{
+ if (core_if->hcd_cb && core_if->hcd_cb->disconnect) {
+ core_if->hcd_cb->disconnect(core_if->hcd_cb->p);
+ }
+}
+/** Inform the HCD the a New Session has begun. Helper function for
+ * using the HCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void hcd_session_start(dwc_otg_core_if_t *core_if)
+{
+ if (core_if->hcd_cb && core_if->hcd_cb->session_start) {
+ core_if->hcd_cb->session_start(core_if->hcd_cb->p);
+ }
+}
+
+/** Start the PCD. Helper function for using the PCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void pcd_start(dwc_otg_core_if_t *core_if)
+{
+ if (core_if->pcd_cb && core_if->pcd_cb->start) {
+ core_if->pcd_cb->start(core_if->pcd_cb->p);
+ }
+}
+/** Stop the PCD. Helper function for using the PCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void pcd_stop(dwc_otg_core_if_t *core_if)
+{
+ if (core_if->pcd_cb && core_if->pcd_cb->stop) {
+ core_if->pcd_cb->stop(core_if->pcd_cb->p);
+ }
+}
+/** Suspend the PCD. Helper function for using the PCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void pcd_suspend(dwc_otg_core_if_t *core_if)
+{
+ if (core_if->pcd_cb && core_if->pcd_cb->suspend) {
+ core_if->pcd_cb->suspend(core_if->pcd_cb->p);
+ }
+}
+/** Resume the PCD. Helper function for using the PCD callbacks.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static inline void pcd_resume(dwc_otg_core_if_t *core_if)
+{
+ if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
+ core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
+ }
+}
+
+/**
+ * This function handles the OTG Interrupts. It reads the OTG
+ * Interrupt Register (GOTGINT) to determine what interrupt has
+ * occurred.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_otg_intr(dwc_otg_core_if_t *core_if)
+{
+ dwc_otg_core_global_regs_t *global_regs =
+ core_if->core_global_regs;
+ gotgint_data_t gotgint;
+ gotgctl_data_t gotgctl;
+ gintmsk_data_t gintmsk;
+
+ gotgint.d32 = dwc_read_reg32(&global_regs->gotgint);
+ gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl);
+ DWC_DEBUGPL(DBG_CIL, "gotgctl=%08x\n", gotgctl.d32);
+
+ if (gotgint.b.sesenddet) {
+ DWC_DEBUGPL(DBG_ANY, "OTG Interrupt: "
+ "Session End Detected++ (%s)\n",
+ op_state_str(core_if));
+ gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl);
+
+ if (core_if->op_state == B_HOST) {
+ pcd_start(core_if);
+ core_if->op_state = B_PERIPHERAL;
+ } else {
+ /* If not B_HOST and Device HNP still set. HNP
+ * Did not succeed!*/
+ if (gotgctl.b.devhnpen) {
+ DWC_DEBUGPL(DBG_ANY, "Session End Detected\n");
+ DWC_ERROR("Device Not Connected/Responding!\n");
+ }
+
+ /* If Session End Detected the B-Cable has
+ * been disconnected. */
+ /* Reset PCD and Gadget driver to a
+ * clean state. */
+ pcd_stop(core_if);
+ }
+ gotgctl.d32 = 0;
+ gotgctl.b.devhnpen = 1;
+ dwc_modify_reg32(&global_regs->gotgctl,
+ gotgctl.d32, 0);
+ }
+ if (gotgint.b.sesreqsucstschng) {
+ DWC_DEBUGPL(DBG_ANY, " OTG Interrupt: "
+ "Session Reqeust Success Status Change++\n");
+ gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl);
+ if (gotgctl.b.sesreqscs) {
+ if ((core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS) &&
+ (core_if->core_params->i2c_enable)) {
+ core_if->srp_success = 1;
+ }
+ else {
+ pcd_resume(core_if);
+ /* Clear Session Request */
+ gotgctl.d32 = 0;
+ gotgctl.b.sesreq = 1;
+ dwc_modify_reg32(&global_regs->gotgctl,
+ gotgctl.d32, 0);
+ }
+ }
+ }
+ if (gotgint.b.hstnegsucstschng) {
+ /* Print statements during the HNP interrupt handling
+ * can cause it to fail.*/
+ gotgctl.d32 = dwc_read_reg32(&global_regs->gotgctl);
+ if (gotgctl.b.hstnegscs) {
+ if (dwc_otg_is_host_mode(core_if)) {
+ core_if->op_state = B_HOST;
+ /*
+ * Need to disable SOF interrupt immediately.
+ * When switching from device to host, the PCD
+ * interrupt handler won't handle the
+ * interrupt if host mode is already set. The
+ * HCD interrupt handler won't get called if
+ * the HCD state is HALT. This means that the
+ * interrupt does not get handled and Linux
+ * complains loudly.
+ */
+ gintmsk.d32 = 0;
+ gintmsk.b.sofintr = 1;
+ dwc_modify_reg32(&global_regs->gintmsk,
+ gintmsk.d32, 0);
+ pcd_stop(core_if);
+ /*
+ * Initialize the Core for Host mode.
+ */
+ hcd_start(core_if);
+ core_if->op_state = B_HOST;
+ }
+ } else {
+ gotgctl.d32 = 0;
+ gotgctl.b.hnpreq = 1;
+ gotgctl.b.devhnpen = 1;
+ dwc_modify_reg32(&global_regs->gotgctl,
+ gotgctl.d32, 0);
+ DWC_DEBUGPL(DBG_ANY, "HNP Failed\n");
+ DWC_ERROR("Device Not Connected/Responding\n");
+ }
+ }
+ if (gotgint.b.hstnegdet) {
+ /* The disconnect interrupt is set at the same time as
+ * Host Negotiation Detected. During the mode
+ * switch all interrupts are cleared so the disconnect
+ * interrupt handler will not get executed.
+ */
+ DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+ "Host Negotiation Detected++ (%s)\n",
+ (dwc_otg_is_host_mode(core_if)?"Host":"Device"));
+ if (dwc_otg_is_device_mode(core_if)){
+ DWC_DEBUGPL(DBG_ANY, "a_suspend->a_peripheral (%d)\n", core_if->op_state);
+ hcd_disconnect(core_if);
+ pcd_start(core_if);
+ core_if->op_state = A_PERIPHERAL;
+ } else {
+ /*
+ * Need to disable SOF interrupt immediately. When
+ * switching from device to host, the PCD interrupt
+ * handler won't handle the interrupt if host mode is
+ * already set. The HCD interrupt handler won't get
+ * called if the HCD state is HALT. This means that
+ * the interrupt does not get handled and Linux
+ * complains loudly.
+ */
+ gintmsk.d32 = 0;
+ gintmsk.b.sofintr = 1;
+ dwc_modify_reg32(&global_regs->gintmsk,
+ gintmsk.d32, 0);
+ pcd_stop(core_if);
+ hcd_start(core_if);
+ core_if->op_state = A_HOST;
+ }
+ }
+ if (gotgint.b.adevtoutchng) {
+ DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+ "A-Device Timeout Change++\n");
+ }
+ if (gotgint.b.debdone) {
+ DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
+ "Debounce Done++\n");
+ }
+
+ /* Clear GOTGINT */
+ dwc_write_reg32 (&core_if->core_global_regs->gotgint, gotgint.d32);
+
+ return 1;
+}
+
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+
+void w_conn_id_status_change(void *p)
+{
+ dwc_otg_core_if_t *core_if = p;
+
+#else
+
+void w_conn_id_status_change(struct work_struct *p)
+{
+ dwc_otg_core_if_t *core_if = container_of(p, dwc_otg_core_if_t, w_conn_id);
+
+#endif
+
+
+ uint32_t count = 0;
+ gotgctl_data_t gotgctl = { .d32 = 0 };
+
+ gotgctl.d32 = dwc_read_reg32(&core_if->core_global_regs->gotgctl);
+ DWC_DEBUGPL(DBG_CIL, "gotgctl=%0x\n", gotgctl.d32);
+ DWC_DEBUGPL(DBG_CIL, "gotgctl.b.conidsts=%d\n", gotgctl.b.conidsts);
+
+ /* B-Device connector (Device Mode) */
+ if (gotgctl.b.conidsts) {
+ /* Wait for switch to device mode. */
+ while (!dwc_otg_is_device_mode(core_if)){
+ DWC_PRINT("Waiting for Peripheral Mode, Mode=%s\n",
+ (dwc_otg_is_host_mode(core_if)?"Host":"Peripheral"));
+ MDELAY(100);
+ if (++count > 10000) *(uint32_t*)NULL=0;
+ }
+ core_if->op_state = B_PERIPHERAL;
+ dwc_otg_core_init(core_if);
+ dwc_otg_enable_global_interrupts(core_if);
+ pcd_start(core_if);
+ } else {
+ /* A-Device connector (Host Mode) */
+ while (!dwc_otg_is_host_mode(core_if)) {
+ DWC_PRINT("Waiting for Host Mode, Mode=%s\n",
+ (dwc_otg_is_host_mode(core_if)?"Host":"Peripheral"));
+ MDELAY(100);
+ if (++count > 10000) *(uint32_t*)NULL=0;
+ }
+ core_if->op_state = A_HOST;
+ /*
+ * Initialize the Core for Host mode.
+ */
+ dwc_otg_core_init(core_if);
+ dwc_otg_enable_global_interrupts(core_if);
+ hcd_start(core_if);
+ }
+}
+
+
+/**
+ * This function handles the Connector ID Status Change Interrupt. It
+ * reads the OTG Interrupt Register (GOTCTL) to determine whether this
+ * is a Device to Host Mode transition or a Host Mode to Device
+ * Transition.
+ *
+ * This only occurs when the cable is connected/removed from the PHY
+ * connector.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_conn_id_status_change_intr(dwc_otg_core_if_t *core_if)
+{
+
+ /*
+ * Need to disable SOF interrupt immediately. If switching from device
+ * to host, the PCD interrupt handler won't handle the interrupt if
+ * host mode is already set. The HCD interrupt handler won't get
+ * called if the HCD state is HALT. This means that the interrupt does
+ * not get handled and Linux complains loudly.
+ */
+ gintmsk_data_t gintmsk = { .d32 = 0 };
+ gintsts_data_t gintsts = { .d32 = 0 };
+
+ gintmsk.b.sofintr = 1;
+ dwc_modify_reg32(&core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
+
+ DWC_DEBUGPL(DBG_CIL, " ++Connector ID Status Change Interrupt++ (%s)\n",
+ (dwc_otg_is_host_mode(core_if)?"Host":"Device"));
+
+ /*
+ * Need to schedule a work, as there are possible DELAY function calls
+ */
+ queue_work(core_if->wq_otg, &core_if->w_conn_id);
+
+ /* Set flag and clear interrupt */
+ gintsts.b.conidstschng = 1;
+ dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32);
+
+ return 1;
+}
+
+/**
+ * This interrupt indicates that a device is initiating the Session
+ * Request Protocol to request the host to turn on bus power so a new
+ * session can begin. The handler responds by turning on bus power. If
+ * the DWC_otg controller is in low power mode, the handler brings the
+ * controller out of low power mode before turning on bus power.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+int32_t dwc_otg_handle_session_req_intr(dwc_otg_core_if_t *core_if)
+{
+ gintsts_data_t gintsts;
+
+#ifndef DWC_HOST_ONLY
+ hprt0_data_t hprt0;
+ DWC_DEBUGPL(DBG_ANY, "++Session Request Interrupt++\n");
+
+ if (dwc_otg_is_device_mode(core_if)) {
+ DWC_PRINT("SRP: Device mode\n");
+ } else {
+ DWC_PRINT("SRP: Host mode\n");
+
+ /* Turn on the port power bit. */
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ hprt0.b.prtpwr = 1;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+
+ /* Start the Connection timer. So a message can be displayed
+ * if connect does not occur within 10 seconds. */
+ hcd_session_start(core_if);
+ }
+#endif
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.sessreqintr = 1;
+ dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32);
+
+ return 1;
+}
+
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+void w_wakeup_detected(void *p)
+{
+ dwc_otg_core_if_t* core_if = p;
+
+#else
+
+void w_wakeup_detected(struct work_struct *p)
+{
+ struct delayed_work *dw = container_of(p, struct delayed_work, work);
+ dwc_otg_core_if_t *core_if = container_of(dw, dwc_otg_core_if_t, w_wkp);
+
+#endif
+ /*
+ * Clear the Resume after 70ms. (Need 20 ms minimum. Use 70 ms
+ * so that OPT tests pass with all PHYs).
+ */
+ hprt0_data_t hprt0 = {.d32=0};
+#if 0
+ pcgcctl_data_t pcgcctl = {.d32=0};
+ /* Restart the Phy Clock */
+ pcgcctl.b.stoppclk = 1;
+ dwc_modify_reg32(core_if->pcgcctl, pcgcctl.d32, 0);
+ UDELAY(10);
+#endif //0
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ DWC_DEBUGPL(DBG_ANY,"Resume: HPRT0=%0x\n", hprt0.d32);
+// MDELAY(70);
+ hprt0.b.prtres = 0; /* Resume */
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ DWC_DEBUGPL(DBG_ANY,"Clear Resume: HPRT0=%0x\n", dwc_read_reg32(core_if->host_if->hprt0));
+}
+/**
+ * This interrupt indicates that the DWC_otg controller has detected a
+ * resume or remote wakeup sequence. If the DWC_otg controller is in
+ * low power mode, the handler must brings the controller out of low
+ * power mode. The controller automatically begins resume
+ * signaling. The handler schedules a time to stop resume signaling.
+ */
+int32_t dwc_otg_handle_wakeup_detected_intr(dwc_otg_core_if_t *core_if)
+{
+ gintsts_data_t gintsts;
+
+ DWC_DEBUGPL(DBG_ANY, "++Resume and Remote Wakeup Detected Interrupt++\n");
+
+ if (dwc_otg_is_device_mode(core_if)) {
+ dctl_data_t dctl = {.d32=0};
+ DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n",
+ dwc_read_reg32(&core_if->dev_if->dev_global_regs->dsts));
+#ifdef PARTIAL_POWER_DOWN
+ if (core_if->hwcfg4.b.power_optimiz) {
+ pcgcctl_data_t power = {.d32=0};
+
+ power.d32 = dwc_read_reg32(core_if->pcgcctl);
+ DWC_DEBUGPL(DBG_CIL, "PCGCCTL=%0x\n", power.d32);
+
+ power.b.stoppclk = 0;
+ dwc_write_reg32(core_if->pcgcctl, power.d32);
+
+ power.b.pwrclmp = 0;
+ dwc_write_reg32(core_if->pcgcctl, power.d32);
+
+ power.b.rstpdwnmodule = 0;
+ dwc_write_reg32(core_if->pcgcctl, power.d32);
+ }
+#endif
+ /* Clear the Remote Wakeup Signalling */
+ dctl.b.rmtwkupsig = 1;
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->dctl,
+ dctl.d32, 0);
+
+ if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
+ core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
+ }
+
+ } else {
+ pcgcctl_data_t pcgcctl = {.d32=0};
+
+ /* Restart the Phy Clock */
+ pcgcctl.b.stoppclk = 1;
+ dwc_modify_reg32(core_if->pcgcctl, pcgcctl.d32, 0);
+
+ queue_delayed_work(core_if->wq_otg, &core_if->w_wkp, ((70 * HZ / 1000) + 1));
+ }
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.wkupintr = 1;
+ dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32);
+
+ return 1;
+}
+
+/**
+ * This interrupt indicates that a device has been disconnected from
+ * the root port.
+ */
+int32_t dwc_otg_handle_disconnect_intr(dwc_otg_core_if_t *core_if)
+{
+ gintsts_data_t gintsts;
+
+ DWC_DEBUGPL(DBG_ANY, "++Disconnect Detected Interrupt++ (%s) %s\n",
+ (dwc_otg_is_host_mode(core_if)?"Host":"Device"),
+ op_state_str(core_if));
+
+/** @todo Consolidate this if statement. */
+#ifndef DWC_HOST_ONLY
+ if (core_if->op_state == B_HOST) {
+ /* If in device mode Disconnect and stop the HCD, then
+ * start the PCD. */
+ hcd_disconnect(core_if);
+ pcd_start(core_if);
+ core_if->op_state = B_PERIPHERAL;
+ } else if (dwc_otg_is_device_mode(core_if)) {
+ gotgctl_data_t gotgctl = { .d32 = 0 };
+ gotgctl.d32 = dwc_read_reg32(&core_if->core_global_regs->gotgctl);
+ if (gotgctl.b.hstsethnpen==1) {
+ /* Do nothing, if HNP in process the OTG
+ * interrupt "Host Negotiation Detected"
+ * interrupt will do the mode switch.
+ */
+ } else if (gotgctl.b.devhnpen == 0) {
+ /* If in device mode Disconnect and stop the HCD, then
+ * start the PCD. */
+ hcd_disconnect(core_if);
+ pcd_start(core_if);
+ core_if->op_state = B_PERIPHERAL;
+ } else {
+ DWC_DEBUGPL(DBG_ANY,"!a_peripheral && !devhnpen\n");
+ }
+ } else {
+ if (core_if->op_state == A_HOST) {
+ /* A-Cable still connected but device disconnected. */
+ hcd_disconnect(core_if);
+ }
+ }
+#endif
+
+ gintsts.d32 = 0;
+ gintsts.b.disconnect = 1;
+ dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32);
+ return 1;
+}
+/**
+ * This interrupt indicates that SUSPEND state has been detected on
+ * the USB.
+ *
+ * For HNP the USB Suspend interrupt signals the change from
+ * "a_peripheral" to "a_host".
+ *
+ * When power management is enabled the core will be put in low power
+ * mode.
+ */
+int32_t dwc_otg_handle_usb_suspend_intr(dwc_otg_core_if_t *core_if)
+{
+ dsts_data_t dsts;
+ gintsts_data_t gintsts;
+
+ DWC_DEBUGPL(DBG_ANY,"USB SUSPEND\n");
+
+ if (dwc_otg_is_device_mode(core_if)) {
+ /* Check the Device status register to determine if the Suspend
+ * state is active. */
+ dsts.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dsts);
+ DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n", dsts.d32);
+ DWC_DEBUGPL(DBG_PCD, "DSTS.Suspend Status=%d "
+ "HWCFG4.power Optimize=%d\n",
+ dsts.b.suspsts, core_if->hwcfg4.b.power_optimiz);
+
+
+#ifdef PARTIAL_POWER_DOWN
+/** @todo Add a module parameter for power management. */
+
+ if (dsts.b.suspsts && core_if->hwcfg4.b.power_optimiz) {
+ pcgcctl_data_t power = {.d32=0};
+ DWC_DEBUGPL(DBG_CIL, "suspend\n");
+
+ power.b.pwrclmp = 1;
+ dwc_write_reg32(core_if->pcgcctl, power.d32);
+
+ power.b.rstpdwnmodule = 1;
+ dwc_modify_reg32(core_if->pcgcctl, 0, power.d32);
+
+ power.b.stoppclk = 1;
+ dwc_modify_reg32(core_if->pcgcctl, 0, power.d32);
+
+ } else {
+ DWC_DEBUGPL(DBG_ANY,"disconnect?\n");
+ }
+#endif
+ /* PCD callback for suspend. */
+ pcd_suspend(core_if);
+ } else {
+ if (core_if->op_state == A_PERIPHERAL) {
+ DWC_DEBUGPL(DBG_ANY,"a_peripheral->a_host\n");
+ /* Clear the a_peripheral flag, back to a_host. */
+ pcd_stop(core_if);
+ hcd_start(core_if);
+ core_if->op_state = A_HOST;
+ }
+ }
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.usbsuspend = 1;
+ dwc_write_reg32(&core_if->core_global_regs->gintsts, gintsts.d32);
+
+ return 1;
+}
+
+
+/**
+ * This function returns the Core Interrupt register.
+ */
+static inline uint32_t dwc_otg_read_common_intr(dwc_otg_core_if_t *core_if)
+{
+ gintsts_data_t gintsts;
+ gintmsk_data_t gintmsk;
+ gintmsk_data_t gintmsk_common = {.d32=0};
+ gintmsk_common.b.wkupintr = 1;
+ gintmsk_common.b.sessreqintr = 1;
+ gintmsk_common.b.conidstschng = 1;
+ gintmsk_common.b.otgintr = 1;
+ gintmsk_common.b.modemismatch = 1;
+ gintmsk_common.b.disconnect = 1;
+ gintmsk_common.b.usbsuspend = 1;
+ /** @todo: The port interrupt occurs while in device
+ * mode. Added code to CIL to clear the interrupt for now!
+ */
+ gintmsk_common.b.portintr = 1;
+
+ gintsts.d32 = dwc_read_reg32(&core_if->core_global_regs->gintsts);
+ gintmsk.d32 = dwc_read_reg32(&core_if->core_global_regs->gintmsk);
+#ifdef DEBUG
+ /* if any common interrupts set */
+ if (gintsts.d32 & gintmsk_common.d32) {
+ DWC_DEBUGPL(DBG_ANY, "gintsts=%08x gintmsk=%08x\n",
+ gintsts.d32, gintmsk.d32);
+ }
+#endif
+
+ return ((gintsts.d32 & gintmsk.d32) & gintmsk_common.d32);
+
+}
+
+/**
+ * Common interrupt handler.
+ *
+ * The common interrupts are those that occur in both Host and Device mode.
+ * This handler handles the following interrupts:
+ * - Mode Mismatch Interrupt
+ * - Disconnect Interrupt
+ * - OTG Interrupt
+ * - Connector ID Status Change Interrupt
+ * - Session Request Interrupt.
+ * - Resume / Remote Wakeup Detected Interrupt.
+ *
+ */
+int32_t dwc_otg_handle_common_intr(dwc_otg_core_if_t *core_if)
+{
+ int retval = 0;
+ gintsts_data_t gintsts;
+
+ gintsts.d32 = dwc_otg_read_common_intr(core_if);
+
+ if (gintsts.b.modemismatch) {
+ retval |= dwc_otg_handle_mode_mismatch_intr(core_if);
+ }
+ if (gintsts.b.otgintr) {
+ retval |= dwc_otg_handle_otg_intr(core_if);
+ }
+ if (gintsts.b.conidstschng) {
+ retval |= dwc_otg_handle_conn_id_status_change_intr(core_if);
+ }
+ if (gintsts.b.disconnect) {
+ retval |= dwc_otg_handle_disconnect_intr(core_if);
+ }
+ if (gintsts.b.sessreqintr) {
+ retval |= dwc_otg_handle_session_req_intr(core_if);
+ }
+ if (gintsts.b.wkupintr) {
+ retval |= dwc_otg_handle_wakeup_detected_intr(core_if);
+ }
+ if (gintsts.b.usbsuspend) {
+ retval |= dwc_otg_handle_usb_suspend_intr(core_if);
+ }
+ if (gintsts.b.portintr && dwc_otg_is_device_mode(core_if)) {
+ /* The port interrupt occurs while in device mode with HPRT0
+ * Port Enable/Disable.
+ */
+ gintsts.d32 = 0;
+ gintsts.b.portintr = 1;
+ dwc_write_reg32(&core_if->core_global_regs->gintsts,
+ gintsts.d32);
+ retval |= 1;
+
+ }
+
+ S3C2410X_CLEAR_EINTPEND();
+
+ return retval;
+}
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_driver.c $
+ * $Revision: 1.7 $
+ * $Date: 2008-11-21 05:39:15 $
+ * $Change: 791271 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+/** @file
+ * The dwc_otg_driver module provides the initialization and cleanup entry
+ * points for the DWC_otg driver. This module will be dynamically installed
+ * after Linux is booted using the insmod command. When the module is
+ * installed, the dwc_otg_driver_init function is called. When the module is
+ * removed (using rmmod), the dwc_otg_driver_cleanup function is called.
+ *
+ * This module also defines a data structure for the dwc_otg_driver, which is
+ * used in conjunction with the standard ARM platform_device structure. These
+ * structures allow the OTG driver to comply with the standard Linux driver
+ * model in which devices and drivers are registered with a bus driver. This
+ * has the benefit that Linux can expose attributes of the driver and device
+ * in its special sysfs file system. Users can then read or write files in
+ * this file system to perform diagnostics on the driver components or the
+ * device.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/stat.h> /* permission constants */
+#include <linux/version.h>
+#include <linux/platform_device.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+# include <linux/irq.h>
+#endif
+
+#include <asm/io.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+# include <asm/irq.h>
+#endif
+
+#include "linux/dwc_otg_plat.h"
+#include "dwc_otg_attr.h"
+#include "dwc_otg_driver.h"
+#include "dwc_otg_cil.h"
+#include "dwc_otg_pcd.h"
+#include "dwc_otg_hcd.h"
+
+#define DWC_DRIVER_VERSION "2.72a 24-JUN-2008"
+#define DWC_DRIVER_DESC "HS OTG USB Controller driver"
+
+static const char dwc_driver_name[] = "dwc_otg";
+
+/*-------------------------------------------------------------------------*/
+/* Encapsulate the module parameter settings */
+
+static dwc_otg_core_params_t dwc_otg_module_params = {
+ .opt = -1,
+ .otg_cap = -1,
+ .dma_enable = -1,
+ .dma_desc_enable = -1,
+ .dma_burst_size = -1,
+ .speed = -1,
+ .host_support_fs_ls_low_power = -1,
+ .host_ls_low_power_phy_clk = -1,
+ .enable_dynamic_fifo = -1,
+ .data_fifo_size = -1,
+ .dev_rx_fifo_size = -1,
+ .dev_nperio_tx_fifo_size = -1,
+ .dev_perio_tx_fifo_size = {
+ /* dev_perio_tx_fifo_size_1 */
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1
+ /* 15 */
+ },
+ .host_rx_fifo_size = -1,
+ .host_nperio_tx_fifo_size = -1,
+ .host_perio_tx_fifo_size = -1,
+ .max_transfer_size = -1,
+ .max_packet_count = -1,
+ .host_channels = -1,
+ .dev_endpoints = -1,
+ .phy_type = -1,
+ .phy_utmi_width = -1,
+ .phy_ulpi_ddr = -1,
+ .phy_ulpi_ext_vbus = -1,
+ .i2c_enable = -1,
+ .ulpi_fs_ls = -1,
+ .ts_dline = -1,
+ .en_multiple_tx_fifo = -1,
+ .dev_tx_fifo_size = {
+ /* dev_tx_fifo_size */
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1,
+ -1
+ /* 15 */
+ },
+ .thr_ctl = -1,
+ .tx_thr_length = -1,
+ .rx_thr_length = -1,
+ .pti_enable = -1,
+ .mpi_enable = -1,
+};
+
+/**
+ * This function shows the Driver Version.
+ */
+static ssize_t version_show(struct device_driver *dev, char *buf)
+{
+ return snprintf(buf, sizeof(DWC_DRIVER_VERSION)+2, "%s\n",
+ DWC_DRIVER_VERSION);
+}
+static DRIVER_ATTR(version, S_IRUGO, version_show, NULL);
+
+/**
+ * Global Debug Level Mask.
+ */
+uint32_t g_dbg_lvl = 0; /* OFF */
+
+/**
+ * This function shows the driver Debug Level.
+ */
+static ssize_t dbg_level_show(struct device_driver *drv, char *buf)
+{
+ return sprintf(buf, "0x%0x\n", g_dbg_lvl);
+}
+
+/**
+ * This function stores the driver Debug Level.
+ */
+static ssize_t dbg_level_store(struct device_driver *drv, const char *buf,
+ size_t count)
+{
+ g_dbg_lvl = simple_strtoul(buf, NULL, 16);
+ return count;
+}
+static DRIVER_ATTR(debuglevel, S_IRUGO|S_IWUSR, dbg_level_show, dbg_level_store);
+
+/**
+ * This function is called during module intialization to verify that
+ * the module parameters are in a valid state.
+ */
+static int check_parameters(dwc_otg_core_if_t *core_if)
+{
+ int i;
+ int retval = 0;
+
+/* Checks if the parameter is outside of its valid range of values */
+#define DWC_OTG_PARAM_TEST(_param_, _low_, _high_) \
+ ((dwc_otg_module_params._param_ < (_low_)) || \
+ (dwc_otg_module_params._param_ > (_high_)))
+
+/* If the parameter has been set by the user, check that the parameter value is
+ * within the value range of values. If not, report a module error. */
+#define DWC_OTG_PARAM_ERR(_param_, _low_, _high_, _string_) \
+ do { \
+ if (dwc_otg_module_params._param_ != -1) { \
+ if (DWC_OTG_PARAM_TEST(_param_, (_low_), (_high_))) { \
+ DWC_ERROR("`%d' invalid for parameter `%s'\n", \
+ dwc_otg_module_params._param_, _string_); \
+ dwc_otg_module_params._param_ = dwc_param_##_param_##_default; \
+ retval++; \
+ } \
+ } \
+ } while (0)
+
+ DWC_OTG_PARAM_ERR(opt,0,1,"opt");
+ DWC_OTG_PARAM_ERR(otg_cap,0,2,"otg_cap");
+ DWC_OTG_PARAM_ERR(dma_enable,0,1,"dma_enable");
+ DWC_OTG_PARAM_ERR(dma_desc_enable,0,1,"dma_desc_enable");
+ DWC_OTG_PARAM_ERR(speed,0,1,"speed");
+ DWC_OTG_PARAM_ERR(host_support_fs_ls_low_power,0,1,"host_support_fs_ls_low_power");
+ DWC_OTG_PARAM_ERR(host_ls_low_power_phy_clk,0,1,"host_ls_low_power_phy_clk");
+ DWC_OTG_PARAM_ERR(enable_dynamic_fifo,0,1,"enable_dynamic_fifo");
+ DWC_OTG_PARAM_ERR(data_fifo_size,32,32768,"data_fifo_size");
+ DWC_OTG_PARAM_ERR(dev_rx_fifo_size,16,32768,"dev_rx_fifo_size");
+ DWC_OTG_PARAM_ERR(dev_nperio_tx_fifo_size,16,32768,"dev_nperio_tx_fifo_size");
+ DWC_OTG_PARAM_ERR(host_rx_fifo_size,16,32768,"host_rx_fifo_size");
+ DWC_OTG_PARAM_ERR(host_nperio_tx_fifo_size,16,32768,"host_nperio_tx_fifo_size");
+ DWC_OTG_PARAM_ERR(host_perio_tx_fifo_size,16,32768,"host_perio_tx_fifo_size");
+ DWC_OTG_PARAM_ERR(max_transfer_size,2047,524288,"max_transfer_size");
+ DWC_OTG_PARAM_ERR(max_packet_count,15,511,"max_packet_count");
+ DWC_OTG_PARAM_ERR(host_channels,1,16,"host_channels");
+ DWC_OTG_PARAM_ERR(dev_endpoints,1,15,"dev_endpoints");
+ DWC_OTG_PARAM_ERR(phy_type,0,2,"phy_type");
+ DWC_OTG_PARAM_ERR(phy_ulpi_ddr,0,1,"phy_ulpi_ddr");
+ DWC_OTG_PARAM_ERR(phy_ulpi_ext_vbus,0,1,"phy_ulpi_ext_vbus");
+ DWC_OTG_PARAM_ERR(i2c_enable,0,1,"i2c_enable");
+ DWC_OTG_PARAM_ERR(ulpi_fs_ls,0,1,"ulpi_fs_ls");
+ DWC_OTG_PARAM_ERR(ts_dline,0,1,"ts_dline");
+
+ if (dwc_otg_module_params.dma_burst_size != -1) {
+ if (DWC_OTG_PARAM_TEST(dma_burst_size,1,1) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size,4,4) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size,8,8) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size,16,16) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size,32,32) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size,64,64) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size,128,128) &&
+ DWC_OTG_PARAM_TEST(dma_burst_size,256,256)) {
+ DWC_ERROR("`%d' invalid for parameter `dma_burst_size'\n",
+ dwc_otg_module_params.dma_burst_size);
+ dwc_otg_module_params.dma_burst_size = 32;
+ retval++;
+ }
+
+ {
+ uint8_t brst_sz = 0;
+ while(dwc_otg_module_params.dma_burst_size > 1) {
+ brst_sz ++;
+ dwc_otg_module_params.dma_burst_size >>= 1;
+ }
+ dwc_otg_module_params.dma_burst_size = brst_sz;
+ }
+ }
+
+ if (dwc_otg_module_params.phy_utmi_width != -1) {
+ if (DWC_OTG_PARAM_TEST(phy_utmi_width, 8, 8) &&
+ DWC_OTG_PARAM_TEST(phy_utmi_width, 16, 16)) {
+ DWC_ERROR("`%d' invalid for parameter `phy_utmi_width'\n",
+ dwc_otg_module_params.phy_utmi_width);
+ dwc_otg_module_params.phy_utmi_width = 16;
+ retval++;
+ }
+ }
+
+ for (i = 0; i < 15; i++) {
+ /** @todo should be like above */
+ //DWC_OTG_PARAM_ERR(dev_perio_tx_fifo_size[i], 4, 768, "dev_perio_tx_fifo_size");
+ if (dwc_otg_module_params.dev_perio_tx_fifo_size[i] != -1) {
+ if (DWC_OTG_PARAM_TEST(dev_perio_tx_fifo_size[i], 4, 768)) {
+ DWC_ERROR("`%d' invalid for parameter `%s_%d'\n",
+ dwc_otg_module_params.dev_perio_tx_fifo_size[i], "dev_perio_tx_fifo_size", i);
+ dwc_otg_module_params.dev_perio_tx_fifo_size[i] = dwc_param_dev_perio_tx_fifo_size_default;
+ retval++;
+ }
+ }
+ }
+
+ DWC_OTG_PARAM_ERR(en_multiple_tx_fifo, 0, 1, "en_multiple_tx_fifo");
+
+ for (i = 0; i < 15; i++) {
+ /** @todo should be like above */
+ //DWC_OTG_PARAM_ERR(dev_tx_fifo_size[i], 4, 768, "dev_tx_fifo_size");
+ if (dwc_otg_module_params.dev_tx_fifo_size[i] != -1) {
+ if (DWC_OTG_PARAM_TEST(dev_tx_fifo_size[i], 4, 768)) {
+ DWC_ERROR("`%d' invalid for parameter `%s_%d'\n",
+ dwc_otg_module_params.dev_tx_fifo_size[i], "dev_tx_fifo_size", i);
+ dwc_otg_module_params.dev_tx_fifo_size[i] = dwc_param_dev_tx_fifo_size_default;
+ retval++;
+ }
+ }
+ }
+
+ DWC_OTG_PARAM_ERR(thr_ctl, 0, 7, "thr_ctl");
+ DWC_OTG_PARAM_ERR(tx_thr_length, 8, 128, "tx_thr_length");
+ DWC_OTG_PARAM_ERR(rx_thr_length, 8, 128, "rx_thr_length");
+
+ DWC_OTG_PARAM_ERR(pti_enable,0,1,"pti_enable");
+ DWC_OTG_PARAM_ERR(mpi_enable,0,1,"mpi_enable");
+
+ /* At this point, all module parameters that have been set by the user
+ * are valid, and those that have not are left unset. Now set their
+ * default values and/or check the parameters against the hardware
+ * configurations of the OTG core. */
+
+/* This sets the parameter to the default value if it has not been set by the
+ * user */
+#define DWC_OTG_PARAM_SET_DEFAULT(_param_) \
+ ({ \
+ int changed = 1; \
+ if (dwc_otg_module_params._param_ == -1) { \
+ changed = 0; \
+ dwc_otg_module_params._param_ = dwc_param_##_param_##_default; \
+ } \
+ changed; \
+ })
+
+/* This checks the macro agains the hardware configuration to see if it is
+ * valid. It is possible that the default value could be invalid. In this
+ * case, it will report a module error if the user touched the parameter.
+ * Otherwise it will adjust the value without any error. */
+#define DWC_OTG_PARAM_CHECK_VALID(_param_, _str_, _is_valid_, _set_valid_) \
+ ({ \
+ int changed = DWC_OTG_PARAM_SET_DEFAULT(_param_); \
+ int error = 0; \
+ if (!(_is_valid_)) { \
+ if (changed) { \
+ DWC_ERROR("`%d' invalid for parameter `%s'. Check HW configuration.\n", dwc_otg_module_params._param_, _str_); \
+ error = 1; \
+ } \
+ dwc_otg_module_params._param_ = (_set_valid_); \
+ } \
+ error; \
+ })
+
+ /* OTG Cap */
+ retval += DWC_OTG_PARAM_CHECK_VALID(otg_cap, "otg_cap",
+ ({
+ int valid;
+ valid = 1;
+ switch (dwc_otg_module_params.otg_cap) {
+ case DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE:
+ if (core_if->hwcfg2.b.op_mode != DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
+ valid = 0;
+ break;
+ case DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE:
+ if ((core_if->hwcfg2.b.op_mode != DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG) &&
+ (core_if->hwcfg2.b.op_mode != DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG) &&
+ (core_if->hwcfg2.b.op_mode != DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE) &&
+ (core_if->hwcfg2.b.op_mode != DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)) {
+ valid = 0;
+ }
+ break;
+ case DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE:
+ /* always valid */
+ break;
+ }
+ valid;
+ }),
+ (((core_if->hwcfg2.b.op_mode == DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG) ||
+ (core_if->hwcfg2.b.op_mode == DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG) ||
+ (core_if->hwcfg2.b.op_mode == DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE) ||
+ (core_if->hwcfg2.b.op_mode == DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)) ?
+ DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE :
+ DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE));
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(dma_enable, "dma_enable",
+ ((dwc_otg_module_params.dma_enable == 1) && (core_if->hwcfg2.b.architecture == 0)) ? 0 : 1,
+ 0);
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(dma_desc_enable, "dma_desc_enable",
+ ((dwc_otg_module_params.dma_desc_enable == 1) &&
+ ((dwc_otg_module_params.dma_enable == 0) || (core_if->hwcfg4.b.desc_dma == 0))) ? 0 : 1,
+ 0);
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(opt, "opt", 1, 0);
+
+ DWC_OTG_PARAM_SET_DEFAULT(dma_burst_size);
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(host_support_fs_ls_low_power,
+ "host_support_fs_ls_low_power",
+ 1, 0);
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(enable_dynamic_fifo,
+ "enable_dynamic_fifo",
+ ((dwc_otg_module_params.enable_dynamic_fifo == 0) ||
+ (core_if->hwcfg2.b.dynamic_fifo == 1)), 0);
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(data_fifo_size,
+ "data_fifo_size",
+ (dwc_otg_module_params.data_fifo_size <= core_if->hwcfg3.b.dfifo_depth),
+ core_if->hwcfg3.b.dfifo_depth);
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(dev_rx_fifo_size,
+ "dev_rx_fifo_size",
+ (dwc_otg_module_params.dev_rx_fifo_size <= dwc_read_reg32(&core_if->core_global_regs->grxfsiz)),
+ dwc_read_reg32(&core_if->core_global_regs->grxfsiz));
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(dev_nperio_tx_fifo_size,
+ "dev_nperio_tx_fifo_size",
+ (dwc_otg_module_params.dev_nperio_tx_fifo_size <= (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz) >> 16)),
+ (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz) >> 16));
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(host_rx_fifo_size,
+ "host_rx_fifo_size",
+ (dwc_otg_module_params.host_rx_fifo_size <= dwc_read_reg32(&core_if->core_global_regs->grxfsiz)),
+ dwc_read_reg32(&core_if->core_global_regs->grxfsiz));
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(host_nperio_tx_fifo_size,
+ "host_nperio_tx_fifo_size",
+ (dwc_otg_module_params.host_nperio_tx_fifo_size <= (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz) >> 16)),
+ (dwc_read_reg32(&core_if->core_global_regs->gnptxfsiz) >> 16));
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(host_perio_tx_fifo_size,
+ "host_perio_tx_fifo_size",
+ (dwc_otg_module_params.host_perio_tx_fifo_size <= ((dwc_read_reg32(&core_if->core_global_regs->hptxfsiz) >> 16))),
+ ((dwc_read_reg32(&core_if->core_global_regs->hptxfsiz) >> 16)));
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(max_transfer_size,
+ "max_transfer_size",
+ (dwc_otg_module_params.max_transfer_size < (1 << (core_if->hwcfg3.b.xfer_size_cntr_width + 11))),
+ ((1 << (core_if->hwcfg3.b.xfer_size_cntr_width + 11)) - 1));
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(max_packet_count,
+ "max_packet_count",
+ (dwc_otg_module_params.max_packet_count < (1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4))),
+ ((1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4)) - 1));
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(host_channels,
+ "host_channels",
+ (dwc_otg_module_params.host_channels <= (core_if->hwcfg2.b.num_host_chan + 1)),
+ (core_if->hwcfg2.b.num_host_chan + 1));
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(dev_endpoints,
+ "dev_endpoints",
+ (dwc_otg_module_params.dev_endpoints <= (core_if->hwcfg2.b.num_dev_ep)),
+ core_if->hwcfg2.b.num_dev_ep);
+
+/*
+ * Define the following to disable the FS PHY Hardware checking. This is for
+ * internal testing only.
+ *
+ * #define NO_FS_PHY_HW_CHECKS
+ */
+
+#ifdef NO_FS_PHY_HW_CHECKS
+ retval += DWC_OTG_PARAM_CHECK_VALID(phy_type,
+ "phy_type", 1, 0);
+#else
+ retval += DWC_OTG_PARAM_CHECK_VALID(phy_type,
+ "phy_type",
+ ({
+ int valid = 0;
+ if ((dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_UTMI) &&
+ ((core_if->hwcfg2.b.hs_phy_type == 1) ||
+ (core_if->hwcfg2.b.hs_phy_type == 3))) {
+ valid = 1;
+ }
+ else if ((dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_ULPI) &&
+ ((core_if->hwcfg2.b.hs_phy_type == 2) ||
+ (core_if->hwcfg2.b.hs_phy_type == 3))) {
+ valid = 1;
+ }
+ else if ((dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_FS) &&
+ (core_if->hwcfg2.b.fs_phy_type == 1)) {
+ valid = 1;
+ }
+ valid;
+ }),
+ ({
+ int set = DWC_PHY_TYPE_PARAM_FS;
+ if (core_if->hwcfg2.b.hs_phy_type) {
+ if ((core_if->hwcfg2.b.hs_phy_type == 3) ||
+ (core_if->hwcfg2.b.hs_phy_type == 1)) {
+ set = DWC_PHY_TYPE_PARAM_UTMI;
+ }
+ else {
+ set = DWC_PHY_TYPE_PARAM_ULPI;
+ }
+ }
+ set;
+ }));
+#endif
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(speed, "speed",
+ (dwc_otg_module_params.speed == 0) && (dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_FS) ? 0 : 1,
+ dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_FS ? 1 : 0);
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(host_ls_low_power_phy_clk,
+ "host_ls_low_power_phy_clk",
+ ((dwc_otg_module_params.host_ls_low_power_phy_clk == DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ) && (dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_FS) ? 0 : 1),
+ ((dwc_otg_module_params.phy_type == DWC_PHY_TYPE_PARAM_FS) ? DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ : DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ));
+
+ DWC_OTG_PARAM_SET_DEFAULT(phy_ulpi_ddr);
+ DWC_OTG_PARAM_SET_DEFAULT(phy_ulpi_ext_vbus);
+ DWC_OTG_PARAM_SET_DEFAULT(phy_utmi_width);
+ DWC_OTG_PARAM_SET_DEFAULT(ulpi_fs_ls);
+ DWC_OTG_PARAM_SET_DEFAULT(ts_dline);
+
+#ifdef NO_FS_PHY_HW_CHECKS
+ retval += DWC_OTG_PARAM_CHECK_VALID(i2c_enable, "i2c_enable", 1, 0);
+#else
+ retval += DWC_OTG_PARAM_CHECK_VALID(i2c_enable,
+ "i2c_enable",
+ (dwc_otg_module_params.i2c_enable == 1) && (core_if->hwcfg3.b.i2c == 0) ? 0 : 1,
+ 0);
+#endif
+
+ for (i = 0; i < 15; i++) {
+ int changed = 1;
+ int error = 0;
+
+ if (dwc_otg_module_params.dev_perio_tx_fifo_size[i] == -1) {
+ changed = 0;
+ dwc_otg_module_params.dev_perio_tx_fifo_size[i] = dwc_param_dev_perio_tx_fifo_size_default;
+ }
+ if (!(dwc_otg_module_params.dev_perio_tx_fifo_size[i] <= (dwc_read_reg32(&core_if->core_global_regs->dptxfsiz_dieptxf[i])))) {
+ if (changed) {
+ DWC_ERROR("`%d' invalid for parameter `dev_perio_fifo_size_%d'. Check HW configuration.\n", dwc_otg_module_params.dev_perio_tx_fifo_size[i], i);
+ error = 1;
+ }
+ dwc_otg_module_params.dev_perio_tx_fifo_size[i] = dwc_read_reg32(&core_if->core_global_regs->dptxfsiz_dieptxf[i]);
+ }
+ retval += error;
+ }
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(en_multiple_tx_fifo, "en_multiple_tx_fifo",
+ ((dwc_otg_module_params.en_multiple_tx_fifo == 1) && (core_if->hwcfg4.b.ded_fifo_en == 0)) ? 0 : 1,
+ 0);
+
+ for (i = 0; i < 15; i++) {
+ int changed = 1;
+ int error = 0;
+
+ if (dwc_otg_module_params.dev_tx_fifo_size[i] == -1) {
+ changed = 0;
+ dwc_otg_module_params.dev_tx_fifo_size[i] = dwc_param_dev_tx_fifo_size_default;
+ }
+ if (!(dwc_otg_module_params.dev_tx_fifo_size[i] <= (dwc_read_reg32(&core_if->core_global_regs->dptxfsiz_dieptxf[i])))) {
+ if (changed) {
+ DWC_ERROR("%d' invalid for parameter `dev_perio_fifo_size_%d'. Check HW configuration.\n", dwc_otg_module_params.dev_tx_fifo_size[i], i);
+ error = 1;
+ }
+ dwc_otg_module_params.dev_tx_fifo_size[i] = dwc_read_reg32(&core_if->core_global_regs->dptxfsiz_dieptxf[i]);
+ }
+ retval += error;
+ }
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(thr_ctl, "thr_ctl",
+ ((dwc_otg_module_params.thr_ctl != 0) && ((dwc_otg_module_params.dma_enable == 0) || (core_if->hwcfg4.b.ded_fifo_en == 0))) ? 0 : 1,
+ 0);
+
+ DWC_OTG_PARAM_SET_DEFAULT(tx_thr_length);
+ DWC_OTG_PARAM_SET_DEFAULT(rx_thr_length);
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(pti_enable, "pti_enable",
+ ((dwc_otg_module_params.pti_enable == 0) || ((dwc_otg_module_params.pti_enable == 1) && (core_if->snpsid >= 0x4F54272A))) ? 1 : 0,
+ 0);
+
+ retval += DWC_OTG_PARAM_CHECK_VALID(mpi_enable, "mpi_enable",
+ ((dwc_otg_module_params.mpi_enable == 0) || ((dwc_otg_module_params.mpi_enable == 1) && (core_if->hwcfg2.b.multi_proc_int == 1))) ? 1 : 0,
+ 0);
+ return retval;
+}
+
+/**
+ * This function is the top level interrupt handler for the Common
+ * (Device and host modes) interrupts.
+ */
+static irqreturn_t dwc_otg_common_irq(int irq, void *dev
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+ , struct pt_regs *r
+#endif
+ )
+{
+ dwc_otg_device_t *otg_dev = dev;
+ int32_t retval = IRQ_NONE;
+
+ retval = dwc_otg_handle_common_intr(otg_dev->core_if);
+ return IRQ_RETVAL(retval);
+}
+
+/**
+ * This function is called when a platform_device is unregistered with the
+ * dwc_otg_driver. This happens, for example, when the rmmod command is
+ * executed. The device may or may not be electrically present. If it is
+ * present, the driver stops device processing. Any resources used on behalf
+ * of this device are freed.
+ *
+ * @param[in] pdev
+ */
+static int dwc_otg_driver_remove(struct platform_device *pdev)
+{
+ dwc_otg_device_t *otg_dev = platform_get_drvdata(pdev);
+ DWC_DEBUGPL(DBG_ANY, "%s(%p)\n", __func__, pdev);
+
+ if (!otg_dev) {
+ /* Memory allocation for the dwc_otg_device failed. */
+ DWC_DEBUGPL(DBG_ANY, "%s: otg_dev NULL!\n", __func__);
+ return 0;
+ }
+
+ /*
+ * Free the IRQ
+ */
+ if (otg_dev->common_irq_installed) {
+ free_irq(otg_dev->irq, otg_dev);
+ }
+
+#ifndef DWC_DEVICE_ONLY
+ if (otg_dev->hcd) {
+ dwc_otg_hcd_remove(&pdev->dev);
+ } else {
+ DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->hcd NULL!\n", __func__);
+ return 0;
+ }
+#endif
+
+#ifndef DWC_HOST_ONLY
+ if (otg_dev->pcd) {
+ dwc_otg_pcd_remove(pdev);
+ }
+#endif
+ if (otg_dev->core_if) {
+ dwc_otg_cil_remove(otg_dev->core_if);
+ }
+
+ /*
+ * Remove the device attributes
+ */
+ dwc_otg_attr_remove(otg_dev->parent);
+
+ /* Disable USB port */
+ dwc_write_reg32((uint32_t *)((uint8_t *)otg_dev->base + 0xe00), 0xf);
+
+ /*
+ * Return the memory.
+ */
+ if (otg_dev->base) {
+ iounmap(otg_dev->base);
+ }
+
+ if (otg_dev->phys_addr != 0) {
+ release_mem_region(otg_dev->phys_addr, otg_dev->base_len);
+ }
+
+ kfree(otg_dev);
+
+ /*
+ * Clear the drvdata pointer.
+ */
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+/**
+ * This function is called when an platform_device is bound to a
+ * dwc_otg_driver. It creates the driver components required to
+ * control the device (CIL, HCD, and PCD) and it initializes the
+ * device. The driver components are stored in a dwc_otg_device
+ * structure. A reference to the dwc_otg_device is saved in the
+ * platform_device. This allows the driver to access the dwc_otg_device
+ * structure on subsequent calls to driver methods for this device.
+ *
+ * @param[in] pdev platform_device definition
+ */
+static int dwc_otg_driver_probe(struct platform_device *pdev)
+{
+ int retval = 0;
+ uint32_t snpsid;
+ dwc_otg_device_t *otg_dev;
+ struct resource *res;
+
+ dev_dbg(&pdev->dev, "dwc_otg_driver_probe(%p)\n", pdev);
+
+ otg_dev= kzalloc(sizeof(dwc_otg_device_t), GFP_KERNEL);
+ if (!otg_dev) {
+ dev_err(&pdev->dev, "kmalloc of dwc_otg_device failed\n");
+ retval = -ENOMEM;
+ goto fail;
+ }
+
+ otg_dev->reg_offset = 0xFFFFFFFF;
+
+ /*
+ * Retrieve the memory and IRQ resources.
+ */
+ otg_dev->irq = platform_get_irq(pdev, 0);
+ if (otg_dev->irq <= 0) {
+ dev_err(&pdev->dev, "no device irq\n");
+ retval = -EINVAL;
+ goto fail;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "no CSR address\n");
+ retval = -EINVAL;
+ goto fail;
+ }
+
+ otg_dev->parent = &pdev->dev;
+ otg_dev->phys_addr = res->start;
+ otg_dev->base_len = res->end - res->start + 1;
+ if (request_mem_region(otg_dev->phys_addr,
+ otg_dev->base_len,
+ dwc_driver_name) == NULL) {
+ dev_err(&pdev->dev, "request_mem_region failed\n");
+ retval = -EBUSY;
+ goto fail;
+ }
+
+ /*
+ * Map the DWC_otg Core memory into virtual address space.
+ */
+ otg_dev->base = ioremap(otg_dev->phys_addr, otg_dev->base_len);
+ if (!otg_dev->base) {
+ dev_err(&pdev->dev, "ioremap() failed\n");
+ retval = -ENOMEM;
+ goto fail;
+ }
+ dev_dbg(&pdev->dev, "mapped base=0x%08x\n", (unsigned) otg_dev->base);
+
+ /* Enable USB Port */
+ dwc_write_reg32((uint32_t *)((uint8_t *)otg_dev->base + 0xe00), 0);
+
+ /*
+ * Attempt to ensure this device is really a DWC_otg Controller.
+ * Read and verify the SNPSID register contents. The value should be
+ * 0x45F42XXX, which corresponds to "OT2", as in "OTG version 2.XX".
+ */
+ snpsid = dwc_read_reg32((uint32_t *)((uint8_t *)otg_dev->base + 0x40));
+
+ if ((snpsid & 0xFFFFF000) != OTG_CORE_REV_2_00) {
+ dev_err(&pdev->dev, "Bad value for SNPSID: 0x%08x\n", snpsid);
+ retval = -EINVAL;
+ goto fail;
+ }
+
+ DWC_PRINT("Core Release: %x.%x%x%x\n",
+ (snpsid >> 12 & 0xF),
+ (snpsid >> 8 & 0xF),
+ (snpsid >> 4 & 0xF),
+ (snpsid & 0xF));
+
+ /*
+ * Initialize driver data to point to the global DWC_otg
+ * Device structure.
+ */
+ platform_set_drvdata(pdev, otg_dev);
+ dev_dbg(&pdev->dev, "dwc_otg_device=0x%p\n", otg_dev);
+
+
+ otg_dev->core_if = dwc_otg_cil_init(otg_dev->base,
+ &dwc_otg_module_params);
+
+ otg_dev->core_if->snpsid = snpsid;
+
+ if (!otg_dev->core_if) {
+ dev_err(&pdev->dev, "CIL initialization failed!\n");
+ retval = -ENOMEM;
+ goto fail;
+ }
+
+ /*
+ * Validate parameter values.
+ */
+ if (check_parameters(otg_dev->core_if)) {
+ retval = -EINVAL;
+ goto fail;
+ }
+
+ /*
+ * Create Device Attributes in sysfs
+ */
+ dwc_otg_attr_create(&pdev->dev);
+
+ /*
+ * Disable the global interrupt until all the interrupt
+ * handlers are installed.
+ */
+ dwc_otg_disable_global_interrupts(otg_dev->core_if);
+
+ /*
+ * Install the interrupt handler for the common interrupts before
+ * enabling common interrupts in core_init below.
+ */
+ DWC_DEBUGPL(DBG_CIL, "registering (common) handler for irq%d\n",
+ otg_dev->irq);
+ retval = request_irq(otg_dev->irq, dwc_otg_common_irq,
+ IRQF_SHARED, "dwc_otg", otg_dev);
+ if (retval) {
+ DWC_ERROR("request of irq%d failed\n", otg_dev->irq);
+ retval = -EBUSY;
+ goto fail;
+ } else {
+ otg_dev->common_irq_installed = 1;
+ }
+
+ /*
+ * Initialize the DWC_otg core.
+ */
+ dwc_otg_core_init(otg_dev->core_if);
+
+#ifndef DWC_HOST_ONLY
+ /*
+ * Initialize the PCD
+ */
+ retval = dwc_otg_pcd_init(pdev);
+ if (retval != 0) {
+ DWC_ERROR("dwc_otg_pcd_init failed\n");
+ otg_dev->pcd = NULL;
+ goto fail;
+ }
+#endif
+#ifndef DWC_DEVICE_ONLY
+ /*
+ * Initialize the HCD
+ */
+ retval = dwc_otg_hcd_init(&pdev->dev);
+ if (retval != 0) {
+ DWC_ERROR("dwc_otg_hcd_init failed\n");
+ otg_dev->hcd = NULL;
+ goto fail;
+ }
+#endif
+
+ /*
+ * Enable the global interrupt after all the interrupt
+ * handlers are installed.
+ */
+ dwc_otg_enable_global_interrupts(otg_dev->core_if);
+
+ return 0;
+
+ fail:
+ dwc_otg_driver_remove(pdev);
+ return retval;
+}
+
+/**
+ * This structure defines the methods to be called by a bus driver
+ * during the lifecycle of a device on that bus. Both drivers and
+ * devices are registered with a bus driver. The bus driver matches
+ * devices to drivers based on information in the device and driver
+ * structures.
+ *
+ * The probe function is called when the bus driver matches a device
+ * to this driver. The remove function is called when a device is
+ * unregistered with the bus driver.
+ */
+static struct platform_driver dwc_otg_driver = {
+ .driver = {
+ .name = (char *)dwc_driver_name,
+ },
+ .probe = dwc_otg_driver_probe,
+ .remove = dwc_otg_driver_remove,
+};
+
+/**
+ * This function is called when the dwc_otg_driver is installed with the
+ * insmod command. It registers the dwc_otg_driver structure with the
+ * appropriate bus driver. This will cause the dwc_otg_driver_probe function
+ * to be called. In addition, the bus driver will automatically expose
+ * attributes defined for the device and driver in the special sysfs file
+ * system.
+ *
+ * @return
+ */
+static int __init dwc_otg_driver_init(void)
+{
+ int retval = 0;
+ int error;
+
+ printk(KERN_INFO "%s: version %s\n", dwc_driver_name, DWC_DRIVER_VERSION);
+
+ retval = platform_driver_register(&dwc_otg_driver);
+ if (retval) {
+ printk(KERN_ERR "%s retval=%d\n", __func__, retval);
+ return retval;
+ }
+
+ error = driver_create_file(&dwc_otg_driver.driver, &driver_attr_version);
+ error = driver_create_file(&dwc_otg_driver.driver, &driver_attr_debuglevel);
+
+ return retval;
+}
+module_init(dwc_otg_driver_init);
+
+/**
+ * This function is called when the driver is removed from the kernel
+ * with the rmmod command. The driver unregisters itself with its bus
+ * driver.
+ *
+ */
+static void __exit dwc_otg_driver_cleanup(void)
+{
+ printk(KERN_DEBUG "dwc_otg_driver_cleanup()\n");
+
+ driver_remove_file(&dwc_otg_driver.driver, &driver_attr_debuglevel);
+ driver_remove_file(&dwc_otg_driver.driver, &driver_attr_version);
+
+ platform_driver_unregister(&dwc_otg_driver);
+
+ printk(KERN_INFO "%s module removed\n", dwc_driver_name);
+}
+module_exit(dwc_otg_driver_cleanup);
+
+MODULE_DESCRIPTION(DWC_DRIVER_DESC);
+MODULE_AUTHOR("Synopsys Inc.");
+MODULE_LICENSE("GPL");
+
+module_param_named(otg_cap, dwc_otg_module_params.otg_cap, int, 0444);
+MODULE_PARM_DESC(otg_cap, "OTG Capabilities 0=HNP&SRP 1=SRP Only 2=None");
+module_param_named(opt, dwc_otg_module_params.opt, int, 0444);
+MODULE_PARM_DESC(opt, "OPT Mode");
+module_param_named(dma_enable, dwc_otg_module_params.dma_enable, int, 0444);
+MODULE_PARM_DESC(dma_enable, "DMA Mode 0=Slave 1=DMA enabled");
+
+module_param_named(dma_desc_enable, dwc_otg_module_params.dma_desc_enable, int, 0444);
+MODULE_PARM_DESC(dma_desc_enable, "DMA Desc Mode 0=Address DMA 1=DMA Descriptor enabled");
+
+module_param_named(dma_burst_size, dwc_otg_module_params.dma_burst_size, int, 0444);
+MODULE_PARM_DESC(dma_burst_size, "DMA Burst Size 1, 4, 8, 16, 32, 64, 128, 256");
+module_param_named(speed, dwc_otg_module_params.speed, int, 0444);
+MODULE_PARM_DESC(speed, "Speed 0=High Speed 1=Full Speed");
+module_param_named(host_support_fs_ls_low_power, dwc_otg_module_params.host_support_fs_ls_low_power, int, 0444);
+MODULE_PARM_DESC(host_support_fs_ls_low_power, "Support Low Power w/FS or LS 0=Support 1=Don't Support");
+module_param_named(host_ls_low_power_phy_clk, dwc_otg_module_params.host_ls_low_power_phy_clk, int, 0444);
+MODULE_PARM_DESC(host_ls_low_power_phy_clk, "Low Speed Low Power Clock 0=48Mhz 1=6Mhz");
+module_param_named(enable_dynamic_fifo, dwc_otg_module_params.enable_dynamic_fifo, int, 0444);
+MODULE_PARM_DESC(enable_dynamic_fifo, "0=cC Setting 1=Allow Dynamic Sizing");
+module_param_named(data_fifo_size, dwc_otg_module_params.data_fifo_size, int, 0444);
+MODULE_PARM_DESC(data_fifo_size, "Total number of words in the data FIFO memory 32-32768");
+module_param_named(dev_rx_fifo_size, dwc_otg_module_params.dev_rx_fifo_size, int, 0444);
+MODULE_PARM_DESC(dev_rx_fifo_size, "Number of words in the Rx FIFO 16-32768");
+module_param_named(dev_nperio_tx_fifo_size, dwc_otg_module_params.dev_nperio_tx_fifo_size, int, 0444);
+MODULE_PARM_DESC(dev_nperio_tx_fifo_size, "Number of words in the non-periodic Tx FIFO 16-32768");
+module_param_named(dev_perio_tx_fifo_size_1, dwc_otg_module_params.dev_perio_tx_fifo_size[0], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_1, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_2, dwc_otg_module_params.dev_perio_tx_fifo_size[1], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_2, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_3, dwc_otg_module_params.dev_perio_tx_fifo_size[2], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_3, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_4, dwc_otg_module_params.dev_perio_tx_fifo_size[3], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_4, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_5, dwc_otg_module_params.dev_perio_tx_fifo_size[4], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_5, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_6, dwc_otg_module_params.dev_perio_tx_fifo_size[5], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_6, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_7, dwc_otg_module_params.dev_perio_tx_fifo_size[6], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_7, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_8, dwc_otg_module_params.dev_perio_tx_fifo_size[7], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_8, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_9, dwc_otg_module_params.dev_perio_tx_fifo_size[8], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_9, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_10, dwc_otg_module_params.dev_perio_tx_fifo_size[9], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_10, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_11, dwc_otg_module_params.dev_perio_tx_fifo_size[10], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_11, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_12, dwc_otg_module_params.dev_perio_tx_fifo_size[11], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_12, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_13, dwc_otg_module_params.dev_perio_tx_fifo_size[12], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_13, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_14, dwc_otg_module_params.dev_perio_tx_fifo_size[13], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_14, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(dev_perio_tx_fifo_size_15, dwc_otg_module_params.dev_perio_tx_fifo_size[14], int, 0444);
+MODULE_PARM_DESC(dev_perio_tx_fifo_size_15, "Number of words in the periodic Tx FIFO 4-768");
+module_param_named(host_rx_fifo_size, dwc_otg_module_params.host_rx_fifo_size, int, 0444);
+MODULE_PARM_DESC(host_rx_fifo_size, "Number of words in the Rx FIFO 16-32768");
+module_param_named(host_nperio_tx_fifo_size, dwc_otg_module_params.host_nperio_tx_fifo_size, int, 0444);
+MODULE_PARM_DESC(host_nperio_tx_fifo_size, "Number of words in the non-periodic Tx FIFO 16-32768");
+module_param_named(host_perio_tx_fifo_size, dwc_otg_module_params.host_perio_tx_fifo_size, int, 0444);
+MODULE_PARM_DESC(host_perio_tx_fifo_size, "Number of words in the host periodic Tx FIFO 16-32768");
+module_param_named(max_transfer_size, dwc_otg_module_params.max_transfer_size, int, 0444);
+/** @todo Set the max to 512K, modify checks */
+MODULE_PARM_DESC(max_transfer_size, "The maximum transfer size supported in bytes 2047-65535");
+module_param_named(max_packet_count, dwc_otg_module_params.max_packet_count, int, 0444);
+MODULE_PARM_DESC(max_packet_count, "The maximum number of packets in a transfer 15-511");
+module_param_named(host_channels, dwc_otg_module_params.host_channels, int, 0444);
+MODULE_PARM_DESC(host_channels, "The number of host channel registers to use 1-16");
+module_param_named(dev_endpoints, dwc_otg_module_params.dev_endpoints, int, 0444);
+MODULE_PARM_DESC(dev_endpoints, "The number of endpoints in addition to EP0 available for device mode 1-15");
+module_param_named(phy_type, dwc_otg_module_params.phy_type, int, 0444);
+MODULE_PARM_DESC(phy_type, "0=Reserved 1=UTMI+ 2=ULPI");
+module_param_named(phy_utmi_width, dwc_otg_module_params.phy_utmi_width, int, 0444);
+MODULE_PARM_DESC(phy_utmi_width, "Specifies the UTMI+ Data Width 8 or 16 bits");
+module_param_named(phy_ulpi_ddr, dwc_otg_module_params.phy_ulpi_ddr, int, 0444);
+MODULE_PARM_DESC(phy_ulpi_ddr, "ULPI at double or single data rate 0=Single 1=Double");
+module_param_named(phy_ulpi_ext_vbus, dwc_otg_module_params.phy_ulpi_ext_vbus, int, 0444);
+MODULE_PARM_DESC(phy_ulpi_ext_vbus, "ULPI PHY using internal or external vbus 0=Internal");
+module_param_named(i2c_enable, dwc_otg_module_params.i2c_enable, int, 0444);
+MODULE_PARM_DESC(i2c_enable, "FS PHY Interface");
+module_param_named(ulpi_fs_ls, dwc_otg_module_params.ulpi_fs_ls, int, 0444);
+MODULE_PARM_DESC(ulpi_fs_ls, "ULPI PHY FS/LS mode only");
+module_param_named(ts_dline, dwc_otg_module_params.ts_dline, int, 0444);
+MODULE_PARM_DESC(ts_dline, "Term select Dline pulsing for all PHYs");
+module_param_named(debug, g_dbg_lvl, int, 0444);
+MODULE_PARM_DESC(debug, "");
+
+module_param_named(en_multiple_tx_fifo, dwc_otg_module_params.en_multiple_tx_fifo, int, 0444);
+MODULE_PARM_DESC(en_multiple_tx_fifo, "Dedicated Non Periodic Tx FIFOs 0=disabled 1=enabled");
+module_param_named(dev_tx_fifo_size_1, dwc_otg_module_params.dev_tx_fifo_size[0], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_1, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_2, dwc_otg_module_params.dev_tx_fifo_size[1], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_2, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_3, dwc_otg_module_params.dev_tx_fifo_size[2], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_3, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_4, dwc_otg_module_params.dev_tx_fifo_size[3], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_4, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_5, dwc_otg_module_params.dev_tx_fifo_size[4], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_5, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_6, dwc_otg_module_params.dev_tx_fifo_size[5], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_6, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_7, dwc_otg_module_params.dev_tx_fifo_size[6], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_7, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_8, dwc_otg_module_params.dev_tx_fifo_size[7], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_8, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_9, dwc_otg_module_params.dev_tx_fifo_size[8], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_9, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_10, dwc_otg_module_params.dev_tx_fifo_size[9], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_10, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_11, dwc_otg_module_params.dev_tx_fifo_size[10], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_11, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_12, dwc_otg_module_params.dev_tx_fifo_size[11], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_12, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_13, dwc_otg_module_params.dev_tx_fifo_size[12], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_13, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_14, dwc_otg_module_params.dev_tx_fifo_size[13], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_14, "Number of words in the Tx FIFO 4-768");
+module_param_named(dev_tx_fifo_size_15, dwc_otg_module_params.dev_tx_fifo_size[14], int, 0444);
+MODULE_PARM_DESC(dev_tx_fifo_size_15, "Number of words in the Tx FIFO 4-768");
+
+module_param_named(thr_ctl, dwc_otg_module_params.thr_ctl, int, 0444);
+MODULE_PARM_DESC(thr_ctl, "Thresholding enable flag bit 0 - non ISO Tx thr., 1 - ISO Tx thr., 2 - Rx thr.- bit 0=disabled 1=enabled");
+module_param_named(tx_thr_length, dwc_otg_module_params.tx_thr_length, int, 0444);
+MODULE_PARM_DESC(tx_thr_length, "Tx Threshold length in 32 bit DWORDs");
+module_param_named(rx_thr_length, dwc_otg_module_params.rx_thr_length, int, 0444);
+MODULE_PARM_DESC(rx_thr_length, "Rx Threshold length in 32 bit DWORDs");
+
+module_param_named(pti_enable, dwc_otg_module_params.pti_enable, int, 0444);
+MODULE_PARM_DESC(pti_enable, "Per Transfer Interrupt mode 0=disabled 1=enabled");
+
+module_param_named(mpi_enable, dwc_otg_module_params.mpi_enable, int, 0444);
+MODULE_PARM_DESC(mpi_enable, "Multiprocessor Interrupt mode 0=disabled 1=enabled");
+
+/** @page "Module Parameters"
+ *
+ * The following parameters may be specified when starting the module.
+ * These parameters define how the DWC_otg controller should be
+ * configured. Parameter values are passed to the CIL initialization
+ * function dwc_otg_cil_init
+ *
+ * Example: <code>modprobe dwc_otg speed=1 otg_cap=1</code>
+ *
+
+ <table>
+ <tr><td>Parameter Name</td><td>Meaning</td></tr>
+
+ <tr>
+ <td>otg_cap</td>
+ <td>Specifies the OTG capabilities. The driver will automatically detect the
+ value for this parameter if none is specified.
+ - 0: HNP and SRP capable (default, if available)
+ - 1: SRP Only capable
+ - 2: No HNP/SRP capable
+ </td></tr>
+
+ <tr>
+ <td>dma_enable</td>
+ <td>Specifies whether to use slave or DMA mode for accessing the data FIFOs.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: Slave
+ - 1: DMA (default, if available)
+ </td></tr>
+
+ <tr>
+ <td>dma_burst_size</td>
+ <td>The DMA Burst size (applicable only for External DMA Mode).
+ - Values: 1, 4, 8 16, 32, 64, 128, 256 (default 32)
+ </td></tr>
+
+ <tr>
+ <td>speed</td>
+ <td>Specifies the maximum speed of operation in host and device mode. The
+ actual speed depends on the speed of the attached device and the value of
+ phy_type.
+ - 0: High Speed (default)
+ - 1: Full Speed
+ </td></tr>
+
+ <tr>
+ <td>host_support_fs_ls_low_power</td>
+ <td>Specifies whether low power mode is supported when attached to a Full
+ Speed or Low Speed device in host mode.
+ - 0: Don't support low power mode (default)
+ - 1: Support low power mode
+ </td></tr>
+
+ <tr>
+ <td>host_ls_low_power_phy_clk</td>
+ <td>Specifies the PHY clock rate in low power mode when connected to a Low
+ Speed device in host mode. This parameter is applicable only if
+ HOST_SUPPORT_FS_LS_LOW_POWER is enabled.
+ - 0: 48 MHz (default)
+ - 1: 6 MHz
+ </td></tr>
+
+ <tr>
+ <td>enable_dynamic_fifo</td>
+ <td> Specifies whether FIFOs may be resized by the driver software.
+ - 0: Use cC FIFO size parameters
+ - 1: Allow dynamic FIFO sizing (default)
+ </td></tr>
+
+ <tr>
+ <td>data_fifo_size</td>
+ <td>Total number of 4-byte words in the data FIFO memory. This memory
+ includes the Rx FIFO, non-periodic Tx FIFO, and periodic Tx FIFOs.
+ - Values: 32 to 32768 (default 8192)
+
+ Note: The total FIFO memory depth in the FPGA configuration is 8192.
+ </td></tr>
+
+ <tr>
+ <td>dev_rx_fifo_size</td>
+ <td>Number of 4-byte words in the Rx FIFO in device mode when dynamic
+ FIFO sizing is enabled.
+ - Values: 16 to 32768 (default 1064)
+ </td></tr>
+
+ <tr>
+ <td>dev_nperio_tx_fifo_size</td>
+ <td>Number of 4-byte words in the non-periodic Tx FIFO in device mode when
+ dynamic FIFO sizing is enabled.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+
+ <tr>
+ <td>dev_perio_tx_fifo_size_n (n = 1 to 15)</td>
+ <td>Number of 4-byte words in each of the periodic Tx FIFOs in device mode
+ when dynamic FIFO sizing is enabled.
+ - Values: 4 to 768 (default 256)
+ </td></tr>
+
+ <tr>
+ <td>host_rx_fifo_size</td>
+ <td>Number of 4-byte words in the Rx FIFO in host mode when dynamic FIFO
+ sizing is enabled.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+
+ <tr>
+ <td>host_nperio_tx_fifo_size</td>
+ <td>Number of 4-byte words in the non-periodic Tx FIFO in host mode when
+ dynamic FIFO sizing is enabled in the core.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+
+ <tr>
+ <td>host_perio_tx_fifo_size</td>
+ <td>Number of 4-byte words in the host periodic Tx FIFO when dynamic FIFO
+ sizing is enabled.
+ - Values: 16 to 32768 (default 1024)
+ </td></tr>
+
+ <tr>
+ <td>max_transfer_size</td>
+ <td>The maximum transfer size supported in bytes.
+ - Values: 2047 to 65,535 (default 65,535)
+ </td></tr>
+
+ <tr>
+ <td>max_packet_count</td>
+ <td>The maximum number of packets in a transfer.
+ - Values: 15 to 511 (default 511)
+ </td></tr>
+
+ <tr>
+ <td>host_channels</td>
+ <td>The number of host channel registers to use.
+ - Values: 1 to 16 (default 12)
+
+ Note: The FPGA configuration supports a maximum of 12 host channels.
+ </td></tr>
+
+ <tr>
+ <td>dev_endpoints</td>
+ <td>The number of endpoints in addition to EP0 available for device mode
+ operations.
+ - Values: 1 to 15 (default 6 IN and OUT)
+
+ Note: The FPGA configuration supports a maximum of 6 IN and OUT endpoints in
+ addition to EP0.
+ </td></tr>
+
+ <tr>
+ <td>phy_type</td>
+ <td>Specifies the type of PHY interface to use. By default, the driver will
+ automatically detect the phy_type.
+ - 0: Full Speed
+ - 1: UTMI+ (default, if available)
+ - 2: ULPI
+ </td></tr>
+
+ <tr>
+ <td>phy_utmi_width</td>
+ <td>Specifies the UTMI+ Data Width. This parameter is applicable for a
+ phy_type of UTMI+. Also, this parameter is applicable only if the
+ OTG_HSPHY_WIDTH cC parameter was set to "8 and 16 bits", meaning that the
+ core has been configured to work at either data path width.
+ - Values: 8 or 16 bits (default 16)
+ </td></tr>
+
+ <tr>
+ <td>phy_ulpi_ddr</td>
+ <td>Specifies whether the ULPI operates at double or single data rate. This
+ parameter is only applicable if phy_type is ULPI.
+ - 0: single data rate ULPI interface with 8 bit wide data bus (default)
+ - 1: double data rate ULPI interface with 4 bit wide data bus
+ </td></tr>
+
+ <tr>
+ <td>i2c_enable</td>
+ <td>Specifies whether to use the I2C interface for full speed PHY. This
+ parameter is only applicable if PHY_TYPE is FS.
+ - 0: Disabled (default)
+ - 1: Enabled
+ </td></tr>
+
+ <tr>
+ <td>otg_en_multiple_tx_fifo</td>
+ <td>Specifies whether dedicatedto tx fifos are enabled for non periodic IN EPs.
+ The driver will automatically detect the value for this parameter if none is
+ specified.
+ - 0: Disabled
+ - 1: Enabled (default, if available)
+ </td></tr>
+
+ <tr>
+ <td>dev_tx_fifo_size_n (n = 1 to 15)</td>
+ <td>Number of 4-byte words in each of the Tx FIFOs in device mode
+ when dynamic FIFO sizing is enabled.
+ - Values: 4 to 768 (default 256)
+ </td></tr>
+
+*/
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_driver.h $
+ * $Revision: 1.2 $
+ * $Date: 2008-11-21 05:39:15 $
+ * $Change: 1064918 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#ifndef __DWC_OTG_DRIVER_H__
+#define __DWC_OTG_DRIVER_H__
+
+/** @file
+ * This file contains the interface to the Linux driver.
+ */
+#include "dwc_otg_cil.h"
+
+/* Type declarations */
+struct dwc_otg_pcd;
+struct dwc_otg_hcd;
+
+/**
+ * This structure is a wrapper that encapsulates the driver components used to
+ * manage a single DWC_otg controller.
+ */
+typedef struct dwc_otg_device {
+ /** Base address returned from ioremap() */
+ void *base;
+
+ struct device *parent;
+
+ /** Pointer to the core interface structure. */
+ dwc_otg_core_if_t *core_if;
+
+ /** Register offset for Diagnostic API. */
+ uint32_t reg_offset;
+
+ /** Pointer to the PCD structure. */
+ struct dwc_otg_pcd *pcd;
+
+ /** Pointer to the HCD structure. */
+ struct dwc_otg_hcd *hcd;
+
+ /** Flag to indicate whether the common IRQ handler is installed. */
+ uint8_t common_irq_installed;
+
+ /* Interrupt request number. */
+ unsigned int irq;
+
+ /* Physical address of Control and Status registers, used by
+ * release_mem_region().
+ */
+ resource_size_t phys_addr;
+
+ /* Length of memory region, used by release_mem_region(). */
+ unsigned long base_len;
+} dwc_otg_device_t;
+
+#endif
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd.c $
+ * $Revision: 1.4 $
+ * $Date: 2008-11-21 05:39:15 $
+ * $Change: 1064940 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+/**
+ * @file
+ *
+ * This file contains the implementation of the HCD. In Linux, the HCD
+ * implements the hc_driver API.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/dma-mapping.h>
+#include <linux/version.h>
+
+#include "dwc_otg_driver.h"
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+
+static const char dwc_otg_hcd_name[] = "dwc_otg";
+
+static const struct hc_driver dwc_otg_hc_driver = {
+
+ .description = dwc_otg_hcd_name,
+ .product_desc = "DWC OTG Controller",
+ .hcd_priv_size = sizeof(dwc_otg_hcd_t),
+
+ .irq = dwc_otg_hcd_irq,
+
+ .flags = HCD_MEMORY | HCD_USB2,
+
+ //.reset =
+ .start = dwc_otg_hcd_start,
+ //.suspend =
+ //.resume =
+ .stop = dwc_otg_hcd_stop,
+
+ .urb_enqueue = dwc_otg_hcd_urb_enqueue,
+ .urb_dequeue = dwc_otg_hcd_urb_dequeue,
+ .endpoint_disable = dwc_otg_hcd_endpoint_disable,
+
+ .get_frame_number = dwc_otg_hcd_get_frame_number,
+
+ .hub_status_data = dwc_otg_hcd_hub_status_data,
+ .hub_control = dwc_otg_hcd_hub_control,
+ //.hub_suspend =
+ //.hub_resume =
+};
+
+/**
+ * Work queue function for starting the HCD when A-Cable is connected.
+ * The dwc_otg_hcd_start() must be called in a process context.
+ */
+static void hcd_start_func(
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ void *_vp
+#else
+ struct work_struct *_work
+#endif
+ )
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ struct usb_hcd *usb_hcd = (struct usb_hcd *)_vp;
+#else
+ struct delayed_work *dw = container_of(_work, struct delayed_work, work);
+ struct dwc_otg_hcd *otg_hcd = container_of(dw, struct dwc_otg_hcd, start_work);
+ struct usb_hcd *usb_hcd = container_of((void *)otg_hcd, struct usb_hcd, hcd_priv);
+#endif
+ DWC_DEBUGPL(DBG_HCDV, "%s() %p\n", __func__, usb_hcd);
+ if (usb_hcd) {
+ dwc_otg_hcd_start(usb_hcd);
+ }
+}
+
+/**
+ * HCD Callback function for starting the HCD when A-Cable is
+ * connected.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_start_cb(void *p)
+{
+ dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(p);
+ dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
+ hprt0_data_t hprt0;
+
+ if (core_if->op_state == B_HOST) {
+ /*
+ * Reset the port. During a HNP mode switch the reset
+ * needs to occur within 1ms and have a duration of at
+ * least 50ms.
+ */
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ hprt0.b.prtrst = 1;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ ((struct usb_hcd *)p)->self.is_b_host = 1;
+ } else {
+ ((struct usb_hcd *)p)->self.is_b_host = 0;
+ }
+
+ /* Need to start the HCD in a non-interrupt context. */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ INIT_WORK(&dwc_otg_hcd->start_work, hcd_start_func, p);
+// INIT_DELAYED_WORK(&dwc_otg_hcd->start_work, hcd_start_func, p);
+#else
+// INIT_WORK(&dwc_otg_hcd->start_work, hcd_start_func);
+ INIT_DELAYED_WORK(&dwc_otg_hcd->start_work, hcd_start_func);
+#endif
+// schedule_work(&dwc_otg_hcd->start_work);
+ queue_delayed_work(core_if->wq_otg, &dwc_otg_hcd->start_work, 50 * HZ / 1000);
+
+ return 1;
+}
+
+/**
+ * HCD Callback function for stopping the HCD.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_stop_cb(void *p)
+{
+ struct usb_hcd *usb_hcd = (struct usb_hcd *)p;
+ DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, p);
+ dwc_otg_hcd_stop(usb_hcd);
+ return 1;
+}
+
+static void del_xfer_timers(dwc_otg_hcd_t *hcd)
+{
+#ifdef DEBUG
+ int i;
+ int num_channels = hcd->core_if->core_params->host_channels;
+ for (i = 0; i < num_channels; i++) {
+ del_timer(&hcd->core_if->hc_xfer_timer[i]);
+ }
+#endif
+}
+
+static void del_timers(dwc_otg_hcd_t *hcd)
+{
+ del_xfer_timers(hcd);
+ del_timer(&hcd->conn_timer);
+}
+
+/**
+ * Processes all the URBs in a single list of QHs. Completes them with
+ * -ETIMEDOUT and frees the QTD.
+ */
+static void kill_urbs_in_qh_list(dwc_otg_hcd_t *hcd, struct list_head *qh_list)
+{
+ struct list_head *qh_item;
+ dwc_otg_qh_t *qh;
+ struct list_head *qtd_item;
+ dwc_otg_qtd_t *qtd;
+
+ list_for_each(qh_item, qh_list) {
+ qh = list_entry(qh_item, dwc_otg_qh_t, qh_list_entry);
+ for (qtd_item = qh->qtd_list.next;
+ qtd_item != &qh->qtd_list;
+ qtd_item = qh->qtd_list.next) {
+ qtd = list_entry(qtd_item, dwc_otg_qtd_t, qtd_list_entry);
+ if (qtd->urb != NULL) {
+ dwc_otg_hcd_complete_urb(hcd, qtd->urb,
+ -ETIMEDOUT);
+ }
+ dwc_otg_hcd_qtd_remove_and_free(hcd, qtd);
+ }
+ }
+}
+
+/**
+ * Responds with an error status of ETIMEDOUT to all URBs in the non-periodic
+ * and periodic schedules. The QTD associated with each URB is removed from
+ * the schedule and freed. This function may be called when a disconnect is
+ * detected or when the HCD is being stopped.
+ */
+static void kill_all_urbs(dwc_otg_hcd_t *hcd)
+{
+ kill_urbs_in_qh_list(hcd, &hcd->non_periodic_sched_inactive);
+ kill_urbs_in_qh_list(hcd, &hcd->non_periodic_sched_active);
+ kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_inactive);
+ kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_ready);
+ kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_assigned);
+ kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_queued);
+}
+
+/**
+ * HCD Callback function for disconnect of the HCD.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_disconnect_cb(void *p)
+{
+ gintsts_data_t intr;
+ dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(p);
+
+ //DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, p);
+
+ /*
+ * Set status flags for the hub driver.
+ */
+ dwc_otg_hcd->flags.b.port_connect_status_change = 1;
+ dwc_otg_hcd->flags.b.port_connect_status = 0;
+
+ /*
+ * Shutdown any transfers in process by clearing the Tx FIFO Empty
+ * interrupt mask and status bits and disabling subsequent host
+ * channel interrupts.
+ */
+ intr.d32 = 0;
+ intr.b.nptxfempty = 1;
+ intr.b.ptxfempty = 1;
+ intr.b.hcintr = 1;
+ dwc_modify_reg32(&dwc_otg_hcd->core_if->core_global_regs->gintmsk, intr.d32, 0);
+ dwc_modify_reg32(&dwc_otg_hcd->core_if->core_global_regs->gintsts, intr.d32, 0);
+
+ del_timers(dwc_otg_hcd);
+
+ /*
+ * Turn off the vbus power only if the core has transitioned to device
+ * mode. If still in host mode, need to keep power on to detect a
+ * reconnection.
+ */
+ if (dwc_otg_is_device_mode(dwc_otg_hcd->core_if)) {
+ if (dwc_otg_hcd->core_if->op_state != A_SUSPEND) {
+ hprt0_data_t hprt0 = { .d32=0 };
+ DWC_PRINT("Disconnect: PortPower off\n");
+ hprt0.b.prtpwr = 0;
+ dwc_write_reg32(dwc_otg_hcd->core_if->host_if->hprt0, hprt0.d32);
+ }
+
+ dwc_otg_disable_host_interrupts(dwc_otg_hcd->core_if);
+ }
+
+ /* Respond with an error status to all URBs in the schedule. */
+ kill_all_urbs(dwc_otg_hcd);
+
+ if (dwc_otg_is_host_mode(dwc_otg_hcd->core_if)) {
+ /* Clean up any host channels that were in use. */
+ int num_channels;
+ int i;
+ dwc_hc_t *channel;
+ dwc_otg_hc_regs_t *hc_regs;
+ hcchar_data_t hcchar;
+
+ num_channels = dwc_otg_hcd->core_if->core_params->host_channels;
+
+ if (!dwc_otg_hcd->core_if->dma_enable) {
+ /* Flush out any channel requests in slave mode. */
+ for (i = 0; i < num_channels; i++) {
+ channel = dwc_otg_hcd->hc_ptr_array[i];
+ if (list_empty(&channel->hc_list_entry)) {
+ hc_regs = dwc_otg_hcd->core_if->host_if->hc_regs[i];
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ if (hcchar.b.chen) {
+ hcchar.b.chen = 0;
+ hcchar.b.chdis = 1;
+ hcchar.b.epdir = 0;
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+ }
+ }
+ }
+ }
+
+ for (i = 0; i < num_channels; i++) {
+ channel = dwc_otg_hcd->hc_ptr_array[i];
+ if (list_empty(&channel->hc_list_entry)) {
+ hc_regs = dwc_otg_hcd->core_if->host_if->hc_regs[i];
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ if (hcchar.b.chen) {
+ /* Halt the channel. */
+ hcchar.b.chdis = 1;
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+ }
+
+ dwc_otg_hc_cleanup(dwc_otg_hcd->core_if, channel);
+ list_add_tail(&channel->hc_list_entry,
+ &dwc_otg_hcd->free_hc_list);
+ }
+ }
+ }
+
+ /* A disconnect will end the session so the B-Device is no
+ * longer a B-host. */
+ ((struct usb_hcd *)p)->self.is_b_host = 0;
+ return 1;
+}
+
+/**
+ * Connection timeout function. An OTG host is required to display a
+ * message if the device does not connect within 10 seconds.
+ */
+void dwc_otg_hcd_connect_timeout(unsigned long ptr)
+{
+ DWC_DEBUGPL(DBG_HCDV, "%s(%x)\n", __func__, (int)ptr);
+ DWC_PRINT("Connect Timeout\n");
+ DWC_ERROR("Device Not Connected/Responding\n");
+}
+
+/**
+ * Start the connection timer. An OTG host is required to display a
+ * message if the device does not connect within 10 seconds. The
+ * timer is deleted if a port connect interrupt occurs before the
+ * timer expires.
+ */
+static void dwc_otg_hcd_start_connect_timer(dwc_otg_hcd_t *hcd)
+{
+ init_timer(&hcd->conn_timer);
+ hcd->conn_timer.function = dwc_otg_hcd_connect_timeout;
+ hcd->conn_timer.data = 0;
+ hcd->conn_timer.expires = jiffies + (HZ * 10);
+ add_timer(&hcd->conn_timer);
+}
+
+/**
+ * HCD Callback function for disconnect of the HCD.
+ *
+ * @param p void pointer to the <code>struct usb_hcd</code>
+ */
+static int32_t dwc_otg_hcd_session_start_cb(void *p)
+{
+ dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(p);
+ DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, p);
+ dwc_otg_hcd_start_connect_timer(dwc_otg_hcd);
+ return 1;
+}
+
+/**
+ * HCD Callback structure for handling mode switching.
+ */
+static dwc_otg_cil_callbacks_t hcd_cil_callbacks = {
+ .start = dwc_otg_hcd_start_cb,
+ .stop = dwc_otg_hcd_stop_cb,
+ .disconnect = dwc_otg_hcd_disconnect_cb,
+ .session_start = dwc_otg_hcd_session_start_cb,
+ .p = 0,
+};
+
+/**
+ * Reset tasklet function
+ */
+static void reset_tasklet_func(unsigned long data)
+{
+ dwc_otg_hcd_t *dwc_otg_hcd = (dwc_otg_hcd_t *)data;
+ dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
+ hprt0_data_t hprt0;
+
+ DWC_DEBUGPL(DBG_HCDV, "USB RESET tasklet called\n");
+
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ hprt0.b.prtrst = 1;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ mdelay(60);
+
+ hprt0.b.prtrst = 0;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ dwc_otg_hcd->flags.b.port_reset_change = 1;
+}
+
+static struct tasklet_struct reset_tasklet = {
+ .next = NULL,
+ .state = 0,
+ .count = ATOMIC_INIT(0),
+ .func = reset_tasklet_func,
+ .data = 0,
+};
+
+/**
+ * Initializes the HCD. This function allocates memory for and initializes the
+ * static parts of the usb_hcd and dwc_otg_hcd structures. It also registers the
+ * USB bus with the core and calls the hc_driver->start() function. It returns
+ * a negative error on failure.
+ */
+int dwc_otg_hcd_init(struct device *dev)
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(dev);
+ struct usb_hcd *hcd = NULL;
+ dwc_otg_hcd_t *dwc_otg_hcd = NULL;
+
+ int num_channels;
+ int i;
+ dwc_hc_t *channel;
+
+ int retval = 0;
+
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD INIT\n");
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ /* 2.6.20+ requires dev.dma_mask to be set prior to calling usb_create_hcd() */
+
+ /* Set device flags indicating whether the HCD supports DMA. */
+ if (otg_dev->core_if->dma_enable) {
+ DWC_PRINT("Using DMA mode\n");
+ dev->dma_mask = (void *)~0;
+ dev->coherent_dma_mask = ~0;
+
+ if (otg_dev->core_if->dma_desc_enable) {
+ DWC_PRINT("Device using Descriptor DMA mode\n");
+ } else {
+ DWC_PRINT("Device using Buffer DMA mode\n");
+ }
+ } else {
+ DWC_PRINT("Using Slave mode\n");
+ dev->dma_mask = (void *)0;
+ dev->coherent_dma_mask = 0;
+ }
+#endif
+ /*
+ * Allocate memory for the base HCD plus the DWC OTG HCD.
+ * Initialize the base HCD.
+ */
+ hcd = usb_create_hcd(&dwc_otg_hc_driver, dev, dev_name(dev));
+ if (!hcd) {
+ retval = -ENOMEM;
+ goto error1;
+ }
+
+ dev_set_drvdata(dev, otg_dev);
+ hcd->regs = otg_dev->base;
+ hcd->rsrc_start = otg_dev->phys_addr;
+ hcd->rsrc_len = otg_dev->base_len;
+ hcd->self.otg_port = 1;
+ hcd->has_tt = 1;
+
+ /* Initialize the DWC OTG HCD. */
+ dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+ dwc_otg_hcd->core_if = otg_dev->core_if;
+ otg_dev->hcd = dwc_otg_hcd;
+
+ /* */
+ spin_lock_init(&dwc_otg_hcd->lock);
+
+ /* Register the HCD CIL Callbacks */
+ dwc_otg_cil_register_hcd_callbacks(otg_dev->core_if,
+ &hcd_cil_callbacks, hcd);
+
+ /* Initialize the non-periodic schedule. */
+ INIT_LIST_HEAD(&dwc_otg_hcd->non_periodic_sched_inactive);
+ INIT_LIST_HEAD(&dwc_otg_hcd->non_periodic_sched_active);
+
+ /* Initialize the periodic schedule. */
+ INIT_LIST_HEAD(&dwc_otg_hcd->periodic_sched_inactive);
+ INIT_LIST_HEAD(&dwc_otg_hcd->periodic_sched_ready);
+ INIT_LIST_HEAD(&dwc_otg_hcd->periodic_sched_assigned);
+ INIT_LIST_HEAD(&dwc_otg_hcd->periodic_sched_queued);
+
+ /*
+ * Create a host channel descriptor for each host channel implemented
+ * in the controller. Initialize the channel descriptor array.
+ */
+ INIT_LIST_HEAD(&dwc_otg_hcd->free_hc_list);
+ num_channels = dwc_otg_hcd->core_if->core_params->host_channels;
+ memset(dwc_otg_hcd->hc_ptr_array, 0, sizeof(dwc_otg_hcd->hc_ptr_array));
+ for (i = 0; i < num_channels; i++) {
+ channel = kmalloc(sizeof(dwc_hc_t), GFP_KERNEL);
+ if (channel == NULL) {
+ retval = -ENOMEM;
+ DWC_ERROR("%s: host channel allocation failed\n", __func__);
+ goto error2;
+ }
+ memset(channel, 0, sizeof(dwc_hc_t));
+ channel->hc_num = i;
+ dwc_otg_hcd->hc_ptr_array[i] = channel;
+#ifdef DEBUG
+ init_timer(&dwc_otg_hcd->core_if->hc_xfer_timer[i]);
+#endif
+ DWC_DEBUGPL(DBG_HCDV, "HCD Added channel #%d, hc=%p\n", i, channel);
+ }
+
+ /* Initialize the Connection timeout timer. */
+ init_timer(&dwc_otg_hcd->conn_timer);
+
+ /* Initialize reset tasklet. */
+ reset_tasklet.data = (unsigned long) dwc_otg_hcd;
+ dwc_otg_hcd->reset_tasklet = &reset_tasklet;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ /* Set device flags indicating whether the HCD supports DMA. */
+ if (otg_dev->core_if->dma_enable) {
+ DWC_PRINT("Using DMA mode\n");
+ dev->dma_mask = (void *)~0;
+ dev->coherent_dma_mask = ~0;
+
+ if (otg_dev->core_if->dma_desc_enable){
+ DWC_PRINT("Device using Descriptor DMA mode\n");
+ } else {
+ DWC_PRINT("Device using Buffer DMA mode\n");
+ }
+ } else {
+ DWC_PRINT("Using Slave mode\n");
+ dev->dma_mask = (void *)0;
+ dev->dev.coherent_dma_mask = 0;
+ }
+#endif
+ /*
+ * Finish generic HCD initialization and start the HCD. This function
+ * allocates the DMA buffer pool, registers the USB bus, requests the
+ * IRQ line, and calls dwc_otg_hcd_start method.
+ */
+ retval = usb_add_hcd(hcd, otg_dev->irq, IRQF_SHARED);
+ if (retval < 0) {
+ goto error2;
+ }
+
+ /*
+ * Allocate space for storing data on status transactions. Normally no
+ * data is sent, but this space acts as a bit bucket. This must be
+ * done after usb_add_hcd since that function allocates the DMA buffer
+ * pool.
+ */
+ if (otg_dev->core_if->dma_enable) {
+ dwc_otg_hcd->status_buf =
+ dma_alloc_coherent(dev,
+ DWC_OTG_HCD_STATUS_BUF_SIZE,
+ &dwc_otg_hcd->status_buf_dma,
+ GFP_KERNEL | GFP_DMA);
+ } else {
+ dwc_otg_hcd->status_buf = kmalloc(DWC_OTG_HCD_STATUS_BUF_SIZE,
+ GFP_KERNEL);
+ }
+ if (!dwc_otg_hcd->status_buf) {
+ retval = -ENOMEM;
+ DWC_ERROR("%s: status_buf allocation failed\n", __func__);
+ goto error3;
+ }
+
+ dwc_otg_hcd->otg_dev = otg_dev;
+
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Initialized HCD, bus=%s, usbbus=%d\n",
+ dev_name(dev), hcd->self.busnum);
+
+ return 0;
+
+ /* Error conditions */
+ error3:
+ usb_remove_hcd(hcd);
+ error2:
+ dwc_otg_hcd_free(hcd);
+ usb_put_hcd(hcd);
+
+ /* FIXME: 2008/05/03 by Steven
+ * write back to device:
+ * dwc_otg_hcd has already been released by dwc_otg_hcd_free()
+ */
+ dev_set_drvdata(dev, otg_dev);
+
+ error1:
+ return retval;
+}
+
+/**
+ * Removes the HCD.
+ * Frees memory and resources associated with the HCD and deregisters the bus.
+ */
+void dwc_otg_hcd_remove(struct device *dev)
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(dev);
+ dwc_otg_hcd_t *dwc_otg_hcd;
+ struct usb_hcd *hcd;
+
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD REMOVE\n");
+
+ if (!otg_dev) {
+ DWC_DEBUGPL(DBG_ANY, "%s: otg_dev NULL!\n", __func__);
+ return;
+ }
+
+ dwc_otg_hcd = otg_dev->hcd;
+
+ if (!dwc_otg_hcd) {
+ DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->hcd NULL!\n", __func__);
+ return;
+ }
+
+ hcd = dwc_otg_hcd_to_hcd(dwc_otg_hcd);
+
+ if (!hcd) {
+ DWC_DEBUGPL(DBG_ANY, "%s: dwc_otg_hcd_to_hcd(dwc_otg_hcd) NULL!\n", __func__);
+ return;
+ }
+
+ /* Turn off all interrupts */
+ dwc_write_reg32(&dwc_otg_hcd->core_if->core_global_regs->gintmsk, 0);
+ dwc_modify_reg32(&dwc_otg_hcd->core_if->core_global_regs->gahbcfg, 1, 0);
+
+ usb_remove_hcd(hcd);
+ dwc_otg_hcd_free(hcd);
+ usb_put_hcd(hcd);
+}
+
+/* =========================================================================
+ * Linux HC Driver Functions
+ * ========================================================================= */
+
+/**
+ * Initializes dynamic portions of the DWC_otg HCD state.
+ */
+static void hcd_reinit(dwc_otg_hcd_t *hcd)
+{
+ struct list_head *item;
+ int num_channels;
+ int i;
+ dwc_hc_t *channel;
+
+ hcd->flags.d32 = 0;
+
+ hcd->non_periodic_qh_ptr = &hcd->non_periodic_sched_active;
+ hcd->non_periodic_channels = 0;
+ hcd->periodic_channels = 0;
+
+ /*
+ * Put all channels in the free channel list and clean up channel
+ * states.
+ */
+ item = hcd->free_hc_list.next;
+ while (item != &hcd->free_hc_list) {
+ list_del(item);
+ item = hcd->free_hc_list.next;
+ }
+ num_channels = hcd->core_if->core_params->host_channels;
+ for (i = 0; i < num_channels; i++) {
+ channel = hcd->hc_ptr_array[i];
+ list_add_tail(&channel->hc_list_entry, &hcd->free_hc_list);
+ dwc_otg_hc_cleanup(hcd->core_if, channel);
+ }
+
+ /* Initialize the DWC core for host mode operation. */
+ dwc_otg_core_host_init(hcd->core_if);
+}
+
+/** Initializes the DWC_otg controller and its root hub and prepares it for host
+ * mode operation. Activates the root port. Returns 0 on success and a negative
+ * error code on failure. */
+int dwc_otg_hcd_start(struct usb_hcd *hcd)
+{
+ dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+ dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
+ struct usb_bus *bus;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ struct usb_device *udev;
+ int retval;
+#endif
+
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD START\n");
+
+ bus = hcd_to_bus(hcd);
+
+ /* Initialize the bus state. If the core is in Device Mode
+ * HALT the USB bus and return. */
+ if (dwc_otg_is_device_mode(core_if)) {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ hcd->state = HC_STATE_HALT;
+#else
+ hcd->state = HC_STATE_RUNNING;
+#endif
+ return 0;
+ }
+ hcd->state = HC_STATE_RUNNING;
+
+ /* Initialize and connect root hub if one is not already attached */
+ if (bus->root_hub) {
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Has Root Hub\n");
+ /* Inform the HUB driver to resume. */
+ usb_hcd_resume_root_hub(hcd);
+ }
+ else {
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Does Not Have Root Hub\n");
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ udev = usb_alloc_dev(NULL, bus, 0);
+ udev->speed = USB_SPEED_HIGH;
+ if (!udev) {
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Error udev alloc\n");
+ return -ENODEV;
+ }
+ if ((retval = usb_hcd_register_root_hub(udev, hcd)) != 0) {
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Error registering %d\n", retval);
+ return -ENODEV;
+ }
+#endif
+ }
+
+ hcd_reinit(dwc_otg_hcd);
+
+ return 0;
+}
+
+static void qh_list_free(dwc_otg_hcd_t *hcd, struct list_head *qh_list)
+{
+ struct list_head *item;
+ dwc_otg_qh_t *qh;
+
+ if (!qh_list->next) {
+ /* The list hasn't been initialized yet. */
+ return;
+ }
+
+ /* Ensure there are no QTDs or URBs left. */
+ kill_urbs_in_qh_list(hcd, qh_list);
+
+ for (item = qh_list->next; item != qh_list; item = qh_list->next) {
+ qh = list_entry(item, dwc_otg_qh_t, qh_list_entry);
+ dwc_otg_hcd_qh_remove_and_free(hcd, qh);
+ }
+}
+
+/**
+ * Halts the DWC_otg host mode operations in a clean manner. USB transfers are
+ * stopped.
+ */
+void dwc_otg_hcd_stop(struct usb_hcd *hcd)
+{
+ dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+ hprt0_data_t hprt0 = { .d32=0 };
+
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD STOP\n");
+
+ /* Turn off all host-specific interrupts. */
+ dwc_otg_disable_host_interrupts(dwc_otg_hcd->core_if);
+
+ /*
+ * The root hub should be disconnected before this function is called.
+ * The disconnect will clear the QTD lists (via ..._hcd_urb_dequeue)
+ * and the QH lists (via ..._hcd_endpoint_disable).
+ */
+
+ /* Turn off the vbus power */
+ DWC_PRINT("PortPower off\n");
+ hprt0.b.prtpwr = 0;
+ dwc_write_reg32(dwc_otg_hcd->core_if->host_if->hprt0, hprt0.d32);
+}
+
+/** Returns the current frame number. */
+int dwc_otg_hcd_get_frame_number(struct usb_hcd *hcd)
+{
+ dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+ hfnum_data_t hfnum;
+
+ hfnum.d32 = dwc_read_reg32(&dwc_otg_hcd->core_if->
+ host_if->host_global_regs->hfnum);
+
+#ifdef DEBUG_SOF
+ DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD GET FRAME NUMBER %d\n", hfnum.b.frnum);
+#endif
+ return hfnum.b.frnum;
+}
+
+/**
+ * Frees secondary storage associated with the dwc_otg_hcd structure contained
+ * in the struct usb_hcd field.
+ */
+void dwc_otg_hcd_free(struct usb_hcd *hcd)
+{
+ dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+ int i;
+
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD FREE\n");
+
+ del_timers(dwc_otg_hcd);
+
+ /* Free memory for QH/QTD lists */
+ qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_inactive);
+ qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_active);
+ qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_inactive);
+ qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_ready);
+ qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_assigned);
+ qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_queued);
+
+ /* Free memory for the host channels. */
+ for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+ dwc_hc_t *hc = dwc_otg_hcd->hc_ptr_array[i];
+ if (hc != NULL) {
+ DWC_DEBUGPL(DBG_HCDV, "HCD Free channel #%i, hc=%p\n", i, hc);
+ kfree(hc);
+ }
+ }
+
+ if (dwc_otg_hcd->core_if->dma_enable) {
+ if (dwc_otg_hcd->status_buf_dma) {
+ dma_free_coherent(hcd->self.controller,
+ DWC_OTG_HCD_STATUS_BUF_SIZE,
+ dwc_otg_hcd->status_buf,
+ dwc_otg_hcd->status_buf_dma);
+ }
+ } else if (dwc_otg_hcd->status_buf != NULL) {
+ kfree(dwc_otg_hcd->status_buf);
+ }
+}
+
+#ifdef DEBUG
+static void dump_urb_info(struct urb *urb, char* fn_name)
+{
+ DWC_PRINT("%s, urb %p\n", fn_name, urb);
+ DWC_PRINT(" Device address: %d\n", usb_pipedevice(urb->pipe));
+ DWC_PRINT(" Endpoint: %d, %s\n", usb_pipeendpoint(urb->pipe),
+ (usb_pipein(urb->pipe) ? "IN" : "OUT"));
+ DWC_PRINT(" Endpoint type: %s\n",
+ ({char *pipetype;
+ switch (usb_pipetype(urb->pipe)) {
+ case PIPE_CONTROL: pipetype = "CONTROL"; break;
+ case PIPE_BULK: pipetype = "BULK"; break;
+ case PIPE_INTERRUPT: pipetype = "INTERRUPT"; break;
+ case PIPE_ISOCHRONOUS: pipetype = "ISOCHRONOUS"; break;
+ default: pipetype = "UNKNOWN"; break;
+ }; pipetype;}));
+ DWC_PRINT(" Speed: %s\n",
+ ({char *speed;
+ switch (urb->dev->speed) {
+ case USB_SPEED_HIGH: speed = "HIGH"; break;
+ case USB_SPEED_FULL: speed = "FULL"; break;
+ case USB_SPEED_LOW: speed = "LOW"; break;
+ default: speed = "UNKNOWN"; break;
+ }; speed;}));
+ DWC_PRINT(" Max packet size: %d\n",
+ usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)));
+ DWC_PRINT(" Data buffer length: %d\n", urb->transfer_buffer_length);
+ DWC_PRINT(" Transfer buffer: %p, Transfer DMA: %p\n",
+ urb->transfer_buffer, (void *)urb->transfer_dma);
+ DWC_PRINT(" Setup buffer: %p, Setup DMA: %p\n",
+ urb->setup_packet, (void *)urb->setup_dma);
+ DWC_PRINT(" Interval: %d\n", urb->interval);
+ if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+ int i;
+ for (i = 0; i < urb->number_of_packets; i++) {
+ DWC_PRINT(" ISO Desc %d:\n", i);
+ DWC_PRINT(" offset: %d, length %d\n",
+ urb->iso_frame_desc[i].offset,
+ urb->iso_frame_desc[i].length);
+ }
+ }
+}
+
+static void dump_channel_info(dwc_otg_hcd_t *hcd,
+ dwc_otg_qh_t *qh)
+{
+ if (qh->channel != NULL) {
+ dwc_hc_t *hc = qh->channel;
+ struct list_head *item;
+ dwc_otg_qh_t *qh_item;
+ int num_channels = hcd->core_if->core_params->host_channels;
+ int i;
+
+ dwc_otg_hc_regs_t *hc_regs;
+ hcchar_data_t hcchar;
+ hcsplt_data_t hcsplt;
+ hctsiz_data_t hctsiz;
+ uint32_t hcdma;
+
+ hc_regs = hcd->core_if->host_if->hc_regs[hc->hc_num];
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ hcsplt.d32 = dwc_read_reg32(&hc_regs->hcsplt);
+ hctsiz.d32 = dwc_read_reg32(&hc_regs->hctsiz);
+ hcdma = dwc_read_reg32(&hc_regs->hcdma);
+
+ DWC_PRINT(" Assigned to channel %p:\n", hc);
+ DWC_PRINT(" hcchar 0x%08x, hcsplt 0x%08x\n", hcchar.d32, hcsplt.d32);
+ DWC_PRINT(" hctsiz 0x%08x, hcdma 0x%08x\n", hctsiz.d32, hcdma);
+ DWC_PRINT(" dev_addr: %d, ep_num: %d, ep_is_in: %d\n",
+ hc->dev_addr, hc->ep_num, hc->ep_is_in);
+ DWC_PRINT(" ep_type: %d\n", hc->ep_type);
+ DWC_PRINT(" max_packet: %d\n", hc->max_packet);
+ DWC_PRINT(" data_pid_start: %d\n", hc->data_pid_start);
+ DWC_PRINT(" xfer_started: %d\n", hc->xfer_started);
+ DWC_PRINT(" halt_status: %d\n", hc->halt_status);
+ DWC_PRINT(" xfer_buff: %p\n", hc->xfer_buff);
+ DWC_PRINT(" xfer_len: %d\n", hc->xfer_len);
+ DWC_PRINT(" qh: %p\n", hc->qh);
+ DWC_PRINT(" NP inactive sched:\n");
+ list_for_each(item, &hcd->non_periodic_sched_inactive) {
+ qh_item = list_entry(item, dwc_otg_qh_t, qh_list_entry);
+ DWC_PRINT(" %p\n", qh_item);
+ }
+ DWC_PRINT(" NP active sched:\n");
+ list_for_each(item, &hcd->non_periodic_sched_active) {
+ qh_item = list_entry(item, dwc_otg_qh_t, qh_list_entry);
+ DWC_PRINT(" %p\n", qh_item);
+ }
+ DWC_PRINT(" Channels: \n");
+ for (i = 0; i < num_channels; i++) {
+ dwc_hc_t *hc = hcd->hc_ptr_array[i];
+ DWC_PRINT(" %2d: %p\n", i, hc);
+ }
+ }
+}
+#endif
+
+/** Starts processing a USB transfer request specified by a USB Request Block
+ * (URB). mem_flags indicates the type of memory allocation to use while
+ * processing this URB. */
+int dwc_otg_hcd_urb_enqueue(struct usb_hcd *hcd,
+ struct urb *urb,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ int mem_flags
+#else
+ gfp_t mem_flags
+#endif
+ )
+{
+ int retval = 0;
+ dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+ dwc_otg_qtd_t *qtd;
+
+#ifdef DEBUG
+ if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+ dump_urb_info(urb, "dwc_otg_hcd_urb_enqueue");
+ }
+#endif
+ if (!dwc_otg_hcd->flags.b.port_connect_status) {
+ /* No longer connected. */
+ return -ENODEV;
+ }
+
+ qtd = dwc_otg_hcd_qtd_create(urb);
+ if (qtd == NULL) {
+ DWC_ERROR("DWC OTG HCD URB Enqueue failed creating QTD\n");
+ return -ENOMEM;
+ }
+
+ retval = dwc_otg_hcd_qtd_add(qtd, dwc_otg_hcd);
+ if (retval < 0) {
+ DWC_ERROR("DWC OTG HCD URB Enqueue failed adding QTD. "
+ "Error status %d\n", retval);
+ dwc_otg_hcd_qtd_free(qtd);
+ }
+
+ return retval;
+}
+
+/** Aborts/cancels a USB transfer request. Always returns 0 to indicate
+ * success. */
+int dwc_otg_hcd_urb_dequeue(struct usb_hcd *hcd,
+ struct urb *urb,
+ int status)
+{
+ unsigned long flags;
+ dwc_otg_hcd_t *dwc_otg_hcd;
+ dwc_otg_qtd_t *urb_qtd;
+ dwc_otg_qh_t *qh;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ struct usb_host_endpoint *ep = dwc_urb_to_endpoint(urb);
+#endif
+
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue\n");
+
+ dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+
+ SPIN_LOCK_IRQSAVE(&dwc_otg_hcd->lock, flags);
+
+ urb_qtd = (dwc_otg_qtd_t *)urb->hcpriv;
+ qh = (dwc_otg_qh_t *)ep->hcpriv;
+
+#ifdef DEBUG
+ if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+ dump_urb_info(urb, "dwc_otg_hcd_urb_dequeue");
+ if (urb_qtd == qh->qtd_in_process) {
+ dump_channel_info(dwc_otg_hcd, qh);
+ }
+ }
+#endif
+
+ if (urb_qtd == qh->qtd_in_process) {
+ /* The QTD is in process (it has been assigned to a channel). */
+
+ if (dwc_otg_hcd->flags.b.port_connect_status) {
+ /*
+ * If still connected (i.e. in host mode), halt the
+ * channel so it can be used for other transfers. If
+ * no longer connected, the host registers can't be
+ * written to halt the channel since the core is in
+ * device mode.
+ */
+ dwc_otg_hc_halt(dwc_otg_hcd->core_if, qh->channel,
+ DWC_OTG_HC_XFER_URB_DEQUEUE);
+ }
+ }
+
+ /*
+ * Free the QTD and clean up the associated QH. Leave the QH in the
+ * schedule if it has any remaining QTDs.
+ */
+ dwc_otg_hcd_qtd_remove_and_free(dwc_otg_hcd, urb_qtd);
+ if (urb_qtd == qh->qtd_in_process) {
+ dwc_otg_hcd_qh_deactivate(dwc_otg_hcd, qh, 0);
+ qh->channel = NULL;
+ qh->qtd_in_process = NULL;
+ } else if (list_empty(&qh->qtd_list)) {
+ dwc_otg_hcd_qh_remove(dwc_otg_hcd, qh);
+ }
+
+ SPIN_UNLOCK_IRQRESTORE(&dwc_otg_hcd->lock, flags);
+
+ urb->hcpriv = NULL;
+
+ /* Higher layer software sets URB status. */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ usb_hcd_giveback_urb(hcd, urb, status);
+#else
+ usb_hcd_giveback_urb(hcd, urb, NULL);
+#endif
+ if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+ DWC_PRINT("Called usb_hcd_giveback_urb()\n");
+ DWC_PRINT(" urb->status = %d\n", urb->status);
+ }
+
+ return 0;
+}
+
+/** Frees resources in the DWC_otg controller related to a given endpoint. Also
+ * clears state in the HCD related to the endpoint. Any URBs for the endpoint
+ * must already be dequeued. */
+void dwc_otg_hcd_endpoint_disable(struct usb_hcd *hcd,
+ struct usb_host_endpoint *ep)
+{
+ dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+ dwc_otg_qh_t *qh;
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ unsigned long flags;
+ int retry = 0;
+#endif
+
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD EP DISABLE: _bEndpointAddress=0x%02x, "
+ "endpoint=%d\n", ep->desc.bEndpointAddress,
+ dwc_ep_addr_to_endpoint(ep->desc.bEndpointAddress));
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+rescan:
+ SPIN_LOCK_IRQSAVE(&dwc_otg_hcd->lock, flags);
+ qh = (dwc_otg_qh_t *)(ep->hcpriv);
+ if (!qh)
+ goto done;
+
+ /** Check that the QTD list is really empty */
+ if (!list_empty(&qh->qtd_list)) {
+ if (retry++ < 250) {
+ SPIN_UNLOCK_IRQRESTORE(&dwc_otg_hcd->lock, flags);
+ schedule_timeout_uninterruptible(1);
+ goto rescan;
+ }
+
+ DWC_WARN("DWC OTG HCD EP DISABLE:"
+ " QTD List for this endpoint is not empty\n");
+ }
+
+ dwc_otg_hcd_qh_remove_and_free(dwc_otg_hcd, qh);
+ ep->hcpriv = NULL;
+done:
+ SPIN_UNLOCK_IRQRESTORE(&dwc_otg_hcd->lock, flags);
+
+#else // LINUX_VERSION_CODE
+
+ qh = (dwc_otg_qh_t *)(ep->hcpriv);
+ if (qh != NULL) {
+#ifdef DEBUG
+ /** Check that the QTD list is really empty */
+ if (!list_empty(&qh->qtd_list)) {
+ DWC_WARN("DWC OTG HCD EP DISABLE:"
+ " QTD List for this endpoint is not empty\n");
+ }
+#endif
+ dwc_otg_hcd_qh_remove_and_free(dwc_otg_hcd, qh);
+ ep->hcpriv = NULL;
+ }
+#endif // LINUX_VERSION_CODE
+}
+
+/** Handles host mode interrupts for the DWC_otg controller. Returns IRQ_NONE if
+ * there was no interrupt to handle. Returns IRQ_HANDLED if there was a valid
+ * interrupt.
+ *
+ * This function is called by the USB core when an interrupt occurs */
+irqreturn_t dwc_otg_hcd_irq(struct usb_hcd *hcd
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+ , struct pt_regs *regs
+#endif
+ )
+{
+ dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+ return IRQ_RETVAL(dwc_otg_hcd_handle_intr(dwc_otg_hcd));
+}
+
+/** Creates Status Change bitmap for the root hub and root port. The bitmap is
+ * returned in buf. Bit 0 is the status change indicator for the root hub. Bit 1
+ * is the status change indicator for the single root port. Returns 1 if either
+ * change indicator is 1, otherwise returns 0. */
+int dwc_otg_hcd_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+ dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+
+ buf[0] = 0;
+ buf[0] |= (dwc_otg_hcd->flags.b.port_connect_status_change ||
+ dwc_otg_hcd->flags.b.port_reset_change ||
+ dwc_otg_hcd->flags.b.port_enable_change ||
+ dwc_otg_hcd->flags.b.port_suspend_change ||
+ dwc_otg_hcd->flags.b.port_over_current_change) << 1;
+
+#ifdef DEBUG
+ if (buf[0]) {
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB STATUS DATA:"
+ " Root port status changed\n");
+ DWC_DEBUGPL(DBG_HCDV, " port_connect_status_change: %d\n",
+ dwc_otg_hcd->flags.b.port_connect_status_change);
+ DWC_DEBUGPL(DBG_HCDV, " port_reset_change: %d\n",
+ dwc_otg_hcd->flags.b.port_reset_change);
+ DWC_DEBUGPL(DBG_HCDV, " port_enable_change: %d\n",
+ dwc_otg_hcd->flags.b.port_enable_change);
+ DWC_DEBUGPL(DBG_HCDV, " port_suspend_change: %d\n",
+ dwc_otg_hcd->flags.b.port_suspend_change);
+ DWC_DEBUGPL(DBG_HCDV, " port_over_current_change: %d\n",
+ dwc_otg_hcd->flags.b.port_over_current_change);
+ }
+#endif
+ return (buf[0] != 0);
+}
+
+#ifdef DWC_HS_ELECT_TST
+/*
+ * Quick and dirty hack to implement the HS Electrical Test
+ * SINGLE_STEP_GET_DEVICE_DESCRIPTOR feature.
+ *
+ * This code was copied from our userspace app "hset". It sends a
+ * Get Device Descriptor control sequence in two parts, first the
+ * Setup packet by itself, followed some time later by the In and
+ * Ack packets. Rather than trying to figure out how to add this
+ * functionality to the normal driver code, we just hijack the
+ * hardware, using these two function to drive the hardware
+ * directly.
+ */
+
+dwc_otg_core_global_regs_t *global_regs;
+dwc_otg_host_global_regs_t *hc_global_regs;
+dwc_otg_hc_regs_t *hc_regs;
+uint32_t *data_fifo;
+
+static void do_setup(void)
+{
+ gintsts_data_t gintsts;
+ hctsiz_data_t hctsiz;
+ hcchar_data_t hcchar;
+ haint_data_t haint;
+ hcint_data_t hcint;
+
+ /* Enable HAINTs */
+ dwc_write_reg32(&hc_global_regs->haintmsk, 0x0001);
+
+ /* Enable HCINTs */
+ dwc_write_reg32(&hc_regs->hcintmsk, 0x04a3);
+
+ /* Read GINTSTS */
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+ /* Read HAINT */
+ haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+ //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+ /* Read HCINT */
+ hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+ //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+ /* Read HCCHAR */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+ /* Clear HCINT */
+ dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+ /* Clear HAINT */
+ dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+ /* Clear GINTSTS */
+ dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+ /* Read GINTSTS */
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+ /*
+ * Send Setup packet (Get Device Descriptor)
+ */
+
+ /* Make sure channel is disabled */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ if (hcchar.b.chen) {
+ //fprintf(stderr, "Channel already enabled 1, HCCHAR = %08x\n", hcchar.d32);
+ hcchar.b.chdis = 1;
+// hcchar.b.chen = 1;
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+ //sleep(1);
+ mdelay(1000);
+
+ /* Read GINTSTS */
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+ /* Read HAINT */
+ haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+ //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+ /* Read HCINT */
+ hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+ //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+ /* Read HCCHAR */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+ /* Clear HCINT */
+ dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+ /* Clear HAINT */
+ dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+ /* Clear GINTSTS */
+ dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ //if (hcchar.b.chen) {
+ // fprintf(stderr, "** Channel _still_ enabled 1, HCCHAR = %08x **\n", hcchar.d32);
+ //}
+ }
+
+ /* Set HCTSIZ */
+ hctsiz.d32 = 0;
+ hctsiz.b.xfersize = 8;
+ hctsiz.b.pktcnt = 1;
+ hctsiz.b.pid = DWC_OTG_HC_PID_SETUP;
+ dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32);
+
+ /* Set HCCHAR */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+ hcchar.b.epdir = 0;
+ hcchar.b.epnum = 0;
+ hcchar.b.mps = 8;
+ hcchar.b.chen = 1;
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+
+ /* Fill FIFO with Setup data for Get Device Descriptor */
+ data_fifo = (uint32_t *)((char *)global_regs + 0x1000);
+ dwc_write_reg32(data_fifo++, 0x01000680);
+ dwc_write_reg32(data_fifo++, 0x00080000);
+
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "Waiting for HCINTR intr 1, GINTSTS = %08x\n", gintsts.d32);
+
+ /* Wait for host channel interrupt */
+ do {
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ } while (gintsts.b.hcintr == 0);
+
+ //fprintf(stderr, "Got HCINTR intr 1, GINTSTS = %08x\n", gintsts.d32);
+
+ /* Disable HCINTs */
+ dwc_write_reg32(&hc_regs->hcintmsk, 0x0000);
+
+ /* Disable HAINTs */
+ dwc_write_reg32(&hc_global_regs->haintmsk, 0x0000);
+
+ /* Read HAINT */
+ haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+ //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+ /* Read HCINT */
+ hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+ //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+ /* Read HCCHAR */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+ /* Clear HCINT */
+ dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+ /* Clear HAINT */
+ dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+ /* Clear GINTSTS */
+ dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+ /* Read GINTSTS */
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+}
+
+static void do_in_ack(void)
+{
+ gintsts_data_t gintsts;
+ hctsiz_data_t hctsiz;
+ hcchar_data_t hcchar;
+ haint_data_t haint;
+ hcint_data_t hcint;
+ host_grxsts_data_t grxsts;
+
+ /* Enable HAINTs */
+ dwc_write_reg32(&hc_global_regs->haintmsk, 0x0001);
+
+ /* Enable HCINTs */
+ dwc_write_reg32(&hc_regs->hcintmsk, 0x04a3);
+
+ /* Read GINTSTS */
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+ /* Read HAINT */
+ haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+ //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+ /* Read HCINT */
+ hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+ //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+ /* Read HCCHAR */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+ /* Clear HCINT */
+ dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+ /* Clear HAINT */
+ dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+ /* Clear GINTSTS */
+ dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+ /* Read GINTSTS */
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+ /*
+ * Receive Control In packet
+ */
+
+ /* Make sure channel is disabled */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ if (hcchar.b.chen) {
+ //fprintf(stderr, "Channel already enabled 2, HCCHAR = %08x\n", hcchar.d32);
+ hcchar.b.chdis = 1;
+ hcchar.b.chen = 1;
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+ //sleep(1);
+ mdelay(1000);
+
+ /* Read GINTSTS */
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+ /* Read HAINT */
+ haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+ //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+ /* Read HCINT */
+ hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+ //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+ /* Read HCCHAR */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+ /* Clear HCINT */
+ dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+ /* Clear HAINT */
+ dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+ /* Clear GINTSTS */
+ dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ //if (hcchar.b.chen) {
+ // fprintf(stderr, "** Channel _still_ enabled 2, HCCHAR = %08x **\n", hcchar.d32);
+ //}
+ }
+
+ /* Set HCTSIZ */
+ hctsiz.d32 = 0;
+ hctsiz.b.xfersize = 8;
+ hctsiz.b.pktcnt = 1;
+ hctsiz.b.pid = DWC_OTG_HC_PID_DATA1;
+ dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32);
+
+ /* Set HCCHAR */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+ hcchar.b.epdir = 1;
+ hcchar.b.epnum = 0;
+ hcchar.b.mps = 8;
+ hcchar.b.chen = 1;
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "Waiting for RXSTSQLVL intr 1, GINTSTS = %08x\n", gintsts.d32);
+
+ /* Wait for receive status queue interrupt */
+ do {
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ } while (gintsts.b.rxstsqlvl == 0);
+
+ //fprintf(stderr, "Got RXSTSQLVL intr 1, GINTSTS = %08x\n", gintsts.d32);
+
+ /* Read RXSTS */
+ grxsts.d32 = dwc_read_reg32(&global_regs->grxstsp);
+ //fprintf(stderr, "GRXSTS: %08x\n", grxsts.d32);
+
+ /* Clear RXSTSQLVL in GINTSTS */
+ gintsts.d32 = 0;
+ gintsts.b.rxstsqlvl = 1;
+ dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+ switch (grxsts.b.pktsts) {
+ case DWC_GRXSTS_PKTSTS_IN:
+ /* Read the data into the host buffer */
+ if (grxsts.b.bcnt > 0) {
+ int i;
+ int word_count = (grxsts.b.bcnt + 3) / 4;
+
+ data_fifo = (uint32_t *)((char *)global_regs + 0x1000);
+
+ for (i = 0; i < word_count; i++) {
+ (void)dwc_read_reg32(data_fifo++);
+ }
+ }
+
+ //fprintf(stderr, "Received %u bytes\n", (unsigned)grxsts.b.bcnt);
+ break;
+
+ default:
+ //fprintf(stderr, "** Unexpected GRXSTS packet status 1 **\n");
+ break;
+ }
+
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "Waiting for RXSTSQLVL intr 2, GINTSTS = %08x\n", gintsts.d32);
+
+ /* Wait for receive status queue interrupt */
+ do {
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ } while (gintsts.b.rxstsqlvl == 0);
+
+ //fprintf(stderr, "Got RXSTSQLVL intr 2, GINTSTS = %08x\n", gintsts.d32);
+
+ /* Read RXSTS */
+ grxsts.d32 = dwc_read_reg32(&global_regs->grxstsp);
+ //fprintf(stderr, "GRXSTS: %08x\n", grxsts.d32);
+
+ /* Clear RXSTSQLVL in GINTSTS */
+ gintsts.d32 = 0;
+ gintsts.b.rxstsqlvl = 1;
+ dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+ switch (grxsts.b.pktsts) {
+ case DWC_GRXSTS_PKTSTS_IN_XFER_COMP:
+ break;
+
+ default:
+ //fprintf(stderr, "** Unexpected GRXSTS packet status 2 **\n");
+ break;
+ }
+
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "Waiting for HCINTR intr 2, GINTSTS = %08x\n", gintsts.d32);
+
+ /* Wait for host channel interrupt */
+ do {
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ } while (gintsts.b.hcintr == 0);
+
+ //fprintf(stderr, "Got HCINTR intr 2, GINTSTS = %08x\n", gintsts.d32);
+
+ /* Read HAINT */
+ haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+ //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+ /* Read HCINT */
+ hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+ //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+ /* Read HCCHAR */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+ /* Clear HCINT */
+ dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+ /* Clear HAINT */
+ dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+ /* Clear GINTSTS */
+ dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+ /* Read GINTSTS */
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+// usleep(100000);
+// mdelay(100);
+ mdelay(1);
+
+ /*
+ * Send handshake packet
+ */
+
+ /* Read HAINT */
+ haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+ //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+ /* Read HCINT */
+ hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+ //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+ /* Read HCCHAR */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+ /* Clear HCINT */
+ dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+ /* Clear HAINT */
+ dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+ /* Clear GINTSTS */
+ dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+ /* Read GINTSTS */
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+ /* Make sure channel is disabled */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ if (hcchar.b.chen) {
+ //fprintf(stderr, "Channel already enabled 3, HCCHAR = %08x\n", hcchar.d32);
+ hcchar.b.chdis = 1;
+ hcchar.b.chen = 1;
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+ //sleep(1);
+ mdelay(1000);
+
+ /* Read GINTSTS */
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+
+ /* Read HAINT */
+ haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+ //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+ /* Read HCINT */
+ hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+ //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+ /* Read HCCHAR */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+ /* Clear HCINT */
+ dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+ /* Clear HAINT */
+ dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+ /* Clear GINTSTS */
+ dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ //if (hcchar.b.chen) {
+ // fprintf(stderr, "** Channel _still_ enabled 3, HCCHAR = %08x **\n", hcchar.d32);
+ //}
+ }
+
+ /* Set HCTSIZ */
+ hctsiz.d32 = 0;
+ hctsiz.b.xfersize = 0;
+ hctsiz.b.pktcnt = 1;
+ hctsiz.b.pid = DWC_OTG_HC_PID_DATA1;
+ dwc_write_reg32(&hc_regs->hctsiz, hctsiz.d32);
+
+ /* Set HCCHAR */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
+ hcchar.b.epdir = 0;
+ hcchar.b.epnum = 0;
+ hcchar.b.mps = 8;
+ hcchar.b.chen = 1;
+ dwc_write_reg32(&hc_regs->hcchar, hcchar.d32);
+
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "Waiting for HCINTR intr 3, GINTSTS = %08x\n", gintsts.d32);
+
+ /* Wait for host channel interrupt */
+ do {
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ } while (gintsts.b.hcintr == 0);
+
+ //fprintf(stderr, "Got HCINTR intr 3, GINTSTS = %08x\n", gintsts.d32);
+
+ /* Disable HCINTs */
+ dwc_write_reg32(&hc_regs->hcintmsk, 0x0000);
+
+ /* Disable HAINTs */
+ dwc_write_reg32(&hc_global_regs->haintmsk, 0x0000);
+
+ /* Read HAINT */
+ haint.d32 = dwc_read_reg32(&hc_global_regs->haint);
+ //fprintf(stderr, "HAINT: %08x\n", haint.d32);
+
+ /* Read HCINT */
+ hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+ //fprintf(stderr, "HCINT: %08x\n", hcint.d32);
+
+ /* Read HCCHAR */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ //fprintf(stderr, "HCCHAR: %08x\n", hcchar.d32);
+
+ /* Clear HCINT */
+ dwc_write_reg32(&hc_regs->hcint, hcint.d32);
+
+ /* Clear HAINT */
+ dwc_write_reg32(&hc_global_regs->haint, haint.d32);
+
+ /* Clear GINTSTS */
+ dwc_write_reg32(&global_regs->gintsts, gintsts.d32);
+
+ /* Read GINTSTS */
+ gintsts.d32 = dwc_read_reg32(&global_regs->gintsts);
+ //fprintf(stderr, "GINTSTS: %08x\n", gintsts.d32);
+}
+#endif /* DWC_HS_ELECT_TST */
+
+/** Handles hub class-specific requests. */
+int dwc_otg_hcd_hub_control(struct usb_hcd *hcd,
+ u16 typeReq,
+ u16 wValue,
+ u16 wIndex,
+ char *buf,
+ u16 wLength)
+{
+ int retval = 0;
+
+ dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+ dwc_otg_core_if_t *core_if = hcd_to_dwc_otg_hcd(hcd)->core_if;
+ struct usb_hub_descriptor *desc;
+ hprt0_data_t hprt0 = {.d32 = 0};
+
+ uint32_t port_status;
+
+ switch (typeReq) {
+ case ClearHubFeature:
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "ClearHubFeature 0x%x\n", wValue);
+ switch (wValue) {
+ case C_HUB_LOCAL_POWER:
+ case C_HUB_OVER_CURRENT:
+ /* Nothing required here */
+ break;
+ default:
+ retval = -EINVAL;
+ DWC_ERROR("DWC OTG HCD - "
+ "ClearHubFeature request %xh unknown\n", wValue);
+ }
+ break;
+ case ClearPortFeature:
+ if (!wIndex || wIndex > 1)
+ goto error;
+
+ switch (wValue) {
+ case USB_PORT_FEAT_ENABLE:
+ DWC_DEBUGPL(DBG_ANY, "DWC OTG HCD HUB CONTROL - "
+ "ClearPortFeature USB_PORT_FEAT_ENABLE\n");
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ hprt0.b.prtena = 1;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ break;
+ case USB_PORT_FEAT_SUSPEND:
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "ClearPortFeature USB_PORT_FEAT_SUSPEND\n");
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ hprt0.b.prtres = 1;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ /* Clear Resume bit */
+ mdelay(100);
+ hprt0.b.prtres = 0;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ break;
+ case USB_PORT_FEAT_POWER:
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "ClearPortFeature USB_PORT_FEAT_POWER\n");
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ hprt0.b.prtpwr = 0;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ break;
+ case USB_PORT_FEAT_INDICATOR:
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "ClearPortFeature USB_PORT_FEAT_INDICATOR\n");
+ /* Port inidicator not supported */
+ break;
+ case USB_PORT_FEAT_C_CONNECTION:
+ /* Clears drivers internal connect status change
+ * flag */
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "ClearPortFeature USB_PORT_FEAT_C_CONNECTION\n");
+ dwc_otg_hcd->flags.b.port_connect_status_change = 0;
+ break;
+ case USB_PORT_FEAT_C_RESET:
+ /* Clears the driver's internal Port Reset Change
+ * flag */
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "ClearPortFeature USB_PORT_FEAT_C_RESET\n");
+ dwc_otg_hcd->flags.b.port_reset_change = 0;
+ break;
+ case USB_PORT_FEAT_C_ENABLE:
+ /* Clears the driver's internal Port
+ * Enable/Disable Change flag */
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "ClearPortFeature USB_PORT_FEAT_C_ENABLE\n");
+ dwc_otg_hcd->flags.b.port_enable_change = 0;
+ break;
+ case USB_PORT_FEAT_C_SUSPEND:
+ /* Clears the driver's internal Port Suspend
+ * Change flag, which is set when resume signaling on
+ * the host port is complete */
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "ClearPortFeature USB_PORT_FEAT_C_SUSPEND\n");
+ dwc_otg_hcd->flags.b.port_suspend_change = 0;
+ break;
+ case USB_PORT_FEAT_C_OVER_CURRENT:
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "ClearPortFeature USB_PORT_FEAT_C_OVER_CURRENT\n");
+ dwc_otg_hcd->flags.b.port_over_current_change = 0;
+ break;
+ default:
+ retval = -EINVAL;
+ DWC_ERROR("DWC OTG HCD - "
+ "ClearPortFeature request %xh "
+ "unknown or unsupported\n", wValue);
+ }
+ break;
+ case GetHubDescriptor:
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "GetHubDescriptor\n");
+ desc = (struct usb_hub_descriptor *)buf;
+ desc->bDescLength = 9;
+ desc->bDescriptorType = 0x29;
+ desc->bNbrPorts = 1;
+ desc->wHubCharacteristics = 0x08;
+ desc->bPwrOn2PwrGood = 1;
+ desc->bHubContrCurrent = 0;
+ desc->u.hs.DeviceRemovable[0] = 0;
+ desc->u.hs.DeviceRemovable[1] = 0xff;
+ break;
+ case GetHubStatus:
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "GetHubStatus\n");
+ memset(buf, 0, 4);
+ break;
+ case GetPortStatus:
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "GetPortStatus\n");
+
+ if (!wIndex || wIndex > 1)
+ goto error;
+
+ port_status = 0;
+
+ if (dwc_otg_hcd->flags.b.port_connect_status_change)
+ port_status |= (1 << USB_PORT_FEAT_C_CONNECTION);
+
+ if (dwc_otg_hcd->flags.b.port_enable_change)
+ port_status |= (1 << USB_PORT_FEAT_C_ENABLE);
+
+ if (dwc_otg_hcd->flags.b.port_suspend_change)
+ port_status |= (1 << USB_PORT_FEAT_C_SUSPEND);
+
+ if (dwc_otg_hcd->flags.b.port_reset_change)
+ port_status |= (1 << USB_PORT_FEAT_C_RESET);
+
+ if (dwc_otg_hcd->flags.b.port_over_current_change) {
+ DWC_ERROR("Device Not Supported\n");
+ port_status |= (1 << USB_PORT_FEAT_C_OVER_CURRENT);
+ }
+
+ if (!dwc_otg_hcd->flags.b.port_connect_status) {
+ /*
+ * The port is disconnected, which means the core is
+ * either in device mode or it soon will be. Just
+ * return 0's for the remainder of the port status
+ * since the port register can't be read if the core
+ * is in device mode.
+ */
+ *((__le32 *) buf) = cpu_to_le32(port_status);
+ break;
+ }
+
+ hprt0.d32 = dwc_read_reg32(core_if->host_if->hprt0);
+ DWC_DEBUGPL(DBG_HCDV, " HPRT0: 0x%08x\n", hprt0.d32);
+
+ if (hprt0.b.prtconnsts)
+ port_status |= (1 << USB_PORT_FEAT_CONNECTION);
+
+ if (hprt0.b.prtena)
+ port_status |= (1 << USB_PORT_FEAT_ENABLE);
+
+ if (hprt0.b.prtsusp)
+ port_status |= (1 << USB_PORT_FEAT_SUSPEND);
+
+ if (hprt0.b.prtovrcurract)
+ port_status |= (1 << USB_PORT_FEAT_OVER_CURRENT);
+
+ if (hprt0.b.prtrst)
+ port_status |= (1 << USB_PORT_FEAT_RESET);
+
+ if (hprt0.b.prtpwr)
+ port_status |= (1 << USB_PORT_FEAT_POWER);
+
+ if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED)
+ port_status |= USB_PORT_STAT_HIGH_SPEED;
+ else if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED)
+ port_status |= USB_PORT_STAT_LOW_SPEED;
+
+ if (hprt0.b.prttstctl)
+ port_status |= (1 << USB_PORT_FEAT_TEST);
+
+ /* USB_PORT_FEAT_INDICATOR unsupported always 0 */
+
+ *((__le32 *) buf) = cpu_to_le32(port_status);
+
+ break;
+ case SetHubFeature:
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "SetHubFeature\n");
+ /* No HUB features supported */
+ break;
+ case SetPortFeature:
+ if (wValue != USB_PORT_FEAT_TEST && (!wIndex || wIndex > 1))
+ goto error;
+
+ if (!dwc_otg_hcd->flags.b.port_connect_status) {
+ /*
+ * The port is disconnected, which means the core is
+ * either in device mode or it soon will be. Just
+ * return without doing anything since the port
+ * register can't be written if the core is in device
+ * mode.
+ */
+ break;
+ }
+
+ switch (wValue) {
+ case USB_PORT_FEAT_SUSPEND:
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "SetPortFeature - USB_PORT_FEAT_SUSPEND\n");
+ if (hcd->self.otg_port == wIndex &&
+ hcd->self.b_hnp_enable) {
+ gotgctl_data_t gotgctl = {.d32=0};
+ gotgctl.b.hstsethnpen = 1;
+ dwc_modify_reg32(&core_if->core_global_regs->gotgctl,
+ 0, gotgctl.d32);
+ core_if->op_state = A_SUSPEND;
+ }
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ hprt0.b.prtsusp = 1;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ //DWC_PRINT("SUSPEND: HPRT0=%0x\n", hprt0.d32);
+ /* Suspend the Phy Clock */
+ {
+ pcgcctl_data_t pcgcctl = {.d32=0};
+ pcgcctl.b.stoppclk = 1;
+ dwc_write_reg32(core_if->pcgcctl, pcgcctl.d32);
+ }
+
+ /* For HNP the bus must be suspended for at least 200ms. */
+ if (hcd->self.b_hnp_enable) {
+ mdelay(200);
+ //DWC_PRINT("SUSPEND: wait complete! (%d)\n", _hcd->state);
+ }
+ break;
+ case USB_PORT_FEAT_POWER:
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "SetPortFeature - USB_PORT_FEAT_POWER\n");
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ hprt0.b.prtpwr = 1;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ break;
+ case USB_PORT_FEAT_RESET:
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "SetPortFeature - USB_PORT_FEAT_RESET\n");
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ /* When B-Host the Port reset bit is set in
+ * the Start HCD Callback function, so that
+ * the reset is started within 1ms of the HNP
+ * success interrupt. */
+ if (!hcd->self.is_b_host) {
+ hprt0.b.prtrst = 1;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ }
+ /* Clear reset bit in 10ms (FS/LS) or 50ms (HS) */
+ MDELAY(60);
+ hprt0.b.prtrst = 0;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ break;
+
+#ifdef DWC_HS_ELECT_TST
+ case USB_PORT_FEAT_TEST:
+ {
+ uint32_t t;
+ gintmsk_data_t gintmsk;
+
+ t = (wIndex >> 8); /* MSB wIndex USB */
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "SetPortFeature - USB_PORT_FEAT_TEST %d\n", t);
+ warn("USB_PORT_FEAT_TEST %d\n", t);
+ if (t < 6) {
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ hprt0.b.prttstctl = t;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ } else {
+ /* Setup global vars with reg addresses (quick and
+ * dirty hack, should be cleaned up)
+ */
+ global_regs = core_if->core_global_regs;
+ hc_global_regs = core_if->host_if->host_global_regs;
+ hc_regs = (dwc_otg_hc_regs_t *)((char *)global_regs + 0x500);
+ data_fifo = (uint32_t *)((char *)global_regs + 0x1000);
+
+ if (t == 6) { /* HS_HOST_PORT_SUSPEND_RESUME */
+ /* Save current interrupt mask */
+ gintmsk.d32 = dwc_read_reg32(&global_regs->gintmsk);
+
+ /* Disable all interrupts while we muck with
+ * the hardware directly
+ */
+ dwc_write_reg32(&global_regs->gintmsk, 0);
+
+ /* 15 second delay per the test spec */
+ mdelay(15000);
+
+ /* Drive suspend on the root port */
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ hprt0.b.prtsusp = 1;
+ hprt0.b.prtres = 0;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+
+ /* 15 second delay per the test spec */
+ mdelay(15000);
+
+ /* Drive resume on the root port */
+ hprt0.d32 = dwc_otg_read_hprt0(core_if);
+ hprt0.b.prtsusp = 0;
+ hprt0.b.prtres = 1;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+ mdelay(100);
+
+ /* Clear the resume bit */
+ hprt0.b.prtres = 0;
+ dwc_write_reg32(core_if->host_if->hprt0, hprt0.d32);
+
+ /* Restore interrupts */
+ dwc_write_reg32(&global_regs->gintmsk, gintmsk.d32);
+ } else if (t == 7) { /* SINGLE_STEP_GET_DEVICE_DESCRIPTOR setup */
+ /* Save current interrupt mask */
+ gintmsk.d32 = dwc_read_reg32(&global_regs->gintmsk);
+
+ /* Disable all interrupts while we muck with
+ * the hardware directly
+ */
+ dwc_write_reg32(&global_regs->gintmsk, 0);
+
+ /* 15 second delay per the test spec */
+ mdelay(15000);
+
+ /* Send the Setup packet */
+ do_setup();
+
+ /* 15 second delay so nothing else happens for awhile */
+ mdelay(15000);
+
+ /* Restore interrupts */
+ dwc_write_reg32(&global_regs->gintmsk, gintmsk.d32);
+ } else if (t == 8) { /* SINGLE_STEP_GET_DEVICE_DESCRIPTOR execute */
+ /* Save current interrupt mask */
+ gintmsk.d32 = dwc_read_reg32(&global_regs->gintmsk);
+
+ /* Disable all interrupts while we muck with
+ * the hardware directly
+ */
+ dwc_write_reg32(&global_regs->gintmsk, 0);
+
+ /* Send the Setup packet */
+ do_setup();
+
+ /* 15 second delay so nothing else happens for awhile */
+ mdelay(15000);
+
+ /* Send the In and Ack packets */
+ do_in_ack();
+
+ /* 15 second delay so nothing else happens for awhile */
+ mdelay(15000);
+
+ /* Restore interrupts */
+ dwc_write_reg32(&global_regs->gintmsk, gintmsk.d32);
+ }
+ }
+ break;
+ }
+#endif /* DWC_HS_ELECT_TST */
+
+ case USB_PORT_FEAT_INDICATOR:
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
+ "SetPortFeature - USB_PORT_FEAT_INDICATOR\n");
+ /* Not supported */
+ break;
+ default:
+ retval = -EINVAL;
+ DWC_ERROR("DWC OTG HCD - "
+ "SetPortFeature request %xh "
+ "unknown or unsupported\n", wValue);
+ break;
+ }
+ break;
+ default:
+ error:
+ retval = -EINVAL;
+ DWC_WARN("DWC OTG HCD - "
+ "Unknown hub control request type or invalid typeReq: %xh wIndex: %xh wValue: %xh\n",
+ typeReq, wIndex, wValue);
+ break;
+ }
+
+ return retval;
+}
+
+/**
+ * Assigns transactions from a QTD to a free host channel and initializes the
+ * host channel to perform the transactions. The host channel is removed from
+ * the free list.
+ *
+ * @param hcd The HCD state structure.
+ * @param qh Transactions from the first QTD for this QH are selected and
+ * assigned to a free host channel.
+ */
+static void assign_and_init_hc(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
+{
+ dwc_hc_t *hc;
+ dwc_otg_qtd_t *qtd;
+ struct urb *urb;
+
+ DWC_DEBUGPL(DBG_HCDV, "%s(%p,%p)\n", __func__, hcd, qh);
+
+ hc = list_entry(hcd->free_hc_list.next, dwc_hc_t, hc_list_entry);
+
+ /* Remove the host channel from the free list. */
+ list_del_init(&hc->hc_list_entry);
+
+ qtd = list_entry(qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry);
+ urb = qtd->urb;
+ qh->channel = hc;
+ qh->qtd_in_process = qtd;
+
+ /*
+ * Use usb_pipedevice to determine device address. This address is
+ * 0 before the SET_ADDRESS command and the correct address afterward.
+ */
+ hc->dev_addr = usb_pipedevice(urb->pipe);
+ hc->ep_num = usb_pipeendpoint(urb->pipe);
+
+ if (urb->dev->speed == USB_SPEED_LOW) {
+ hc->speed = DWC_OTG_EP_SPEED_LOW;
+ } else if (urb->dev->speed == USB_SPEED_FULL) {
+ hc->speed = DWC_OTG_EP_SPEED_FULL;
+ } else {
+ hc->speed = DWC_OTG_EP_SPEED_HIGH;
+ }
+
+ hc->max_packet = dwc_max_packet(qh->maxp);
+
+ hc->xfer_started = 0;
+ hc->halt_status = DWC_OTG_HC_XFER_NO_HALT_STATUS;
+ hc->error_state = (qtd->error_count > 0);
+ hc->halt_on_queue = 0;
+ hc->halt_pending = 0;
+ hc->requests = 0;
+
+ /*
+ * The following values may be modified in the transfer type section
+ * below. The xfer_len value may be reduced when the transfer is
+ * started to accommodate the max widths of the XferSize and PktCnt
+ * fields in the HCTSIZn register.
+ */
+ hc->do_ping = qh->ping_state;
+ hc->ep_is_in = (usb_pipein(urb->pipe) != 0);
+ hc->data_pid_start = qh->data_toggle;
+ hc->multi_count = 1;
+
+ if (hcd->core_if->dma_enable) {
+ hc->xfer_buff = (uint8_t *)urb->transfer_dma + urb->actual_length;
+ } else {
+ hc->xfer_buff = (uint8_t *)urb->transfer_buffer + urb->actual_length;
+ }
+ hc->xfer_len = urb->transfer_buffer_length - urb->actual_length;
+ hc->xfer_count = 0;
+
+ /*
+ * Set the split attributes
+ */
+ hc->do_split = 0;
+ if (qh->do_split) {
+ hc->do_split = 1;
+ hc->xact_pos = qtd->isoc_split_pos;
+ hc->complete_split = qtd->complete_split;
+ hc->hub_addr = urb->dev->tt->hub->devnum;
+ hc->port_addr = urb->dev->ttport;
+ }
+
+ switch (usb_pipetype(urb->pipe)) {
+ case PIPE_CONTROL:
+ hc->ep_type = DWC_OTG_EP_TYPE_CONTROL;
+ switch (qtd->control_phase) {
+ case DWC_OTG_CONTROL_SETUP:
+ DWC_DEBUGPL(DBG_HCDV, " Control setup transaction\n");
+ hc->do_ping = 0;
+ hc->ep_is_in = 0;
+ hc->data_pid_start = DWC_OTG_HC_PID_SETUP;
+ if (hcd->core_if->dma_enable) {
+ hc->xfer_buff = (uint8_t *)urb->setup_dma;
+ } else {
+ hc->xfer_buff = (uint8_t *)urb->setup_packet;
+ }
+ hc->xfer_len = 8;
+ break;
+ case DWC_OTG_CONTROL_DATA:
+ DWC_DEBUGPL(DBG_HCDV, " Control data transaction\n");
+ hc->data_pid_start = qtd->data_toggle;
+ break;
+ case DWC_OTG_CONTROL_STATUS:
+ /*
+ * Direction is opposite of data direction or IN if no
+ * data.
+ */
+ DWC_DEBUGPL(DBG_HCDV, " Control status transaction\n");
+ if (urb->transfer_buffer_length == 0) {
+ hc->ep_is_in = 1;
+ } else {
+ hc->ep_is_in = (usb_pipein(urb->pipe) != USB_DIR_IN);
+ }
+ if (hc->ep_is_in) {
+ hc->do_ping = 0;
+ }
+ hc->data_pid_start = DWC_OTG_HC_PID_DATA1;
+ hc->xfer_len = 0;
+ if (hcd->core_if->dma_enable) {
+ hc->xfer_buff = (uint8_t *)hcd->status_buf_dma;
+ } else {
+ hc->xfer_buff = (uint8_t *)hcd->status_buf;
+ }
+ break;
+ }
+ break;
+ case PIPE_BULK:
+ hc->ep_type = DWC_OTG_EP_TYPE_BULK;
+ break;
+ case PIPE_INTERRUPT:
+ hc->ep_type = DWC_OTG_EP_TYPE_INTR;
+ break;
+ case PIPE_ISOCHRONOUS:
+ {
+ struct usb_iso_packet_descriptor *frame_desc;
+ frame_desc = &urb->iso_frame_desc[qtd->isoc_frame_index];
+ hc->ep_type = DWC_OTG_EP_TYPE_ISOC;
+ if (hcd->core_if->dma_enable) {
+ hc->xfer_buff = (uint8_t *)urb->transfer_dma;
+ } else {
+ hc->xfer_buff = (uint8_t *)urb->transfer_buffer;
+ }
+ hc->xfer_buff += frame_desc->offset + qtd->isoc_split_offset;
+ hc->xfer_len = frame_desc->length - qtd->isoc_split_offset;
+
+ if (hc->xact_pos == DWC_HCSPLIT_XACTPOS_ALL) {
+ if (hc->xfer_len <= 188) {
+ hc->xact_pos = DWC_HCSPLIT_XACTPOS_ALL;
+ }
+ else {
+ hc->xact_pos = DWC_HCSPLIT_XACTPOS_BEGIN;
+ }
+ }
+ }
+ break;
+ }
+
+ if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+ hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+ /*
+ * This value may be modified when the transfer is started to
+ * reflect the actual transfer length.
+ */
+ hc->multi_count = dwc_hb_mult(qh->maxp);
+ }
+
+ dwc_otg_hc_init(hcd->core_if, hc);
+ hc->qh = qh;
+}
+
+/**
+ * This function selects transactions from the HCD transfer schedule and
+ * assigns them to available host channels. It is called from HCD interrupt
+ * handler functions.
+ *
+ * @param hcd The HCD state structure.
+ *
+ * @return The types of new transactions that were assigned to host channels.
+ */
+dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t *hcd)
+{
+ struct list_head *qh_ptr;
+ dwc_otg_qh_t *qh;
+ int num_channels;
+ dwc_otg_transaction_type_e ret_val = DWC_OTG_TRANSACTION_NONE;
+
+#ifdef DEBUG_SOF
+ DWC_DEBUGPL(DBG_HCD, " Select Transactions\n");
+#endif
+
+ /* Process entries in the periodic ready list. */
+ qh_ptr = hcd->periodic_sched_ready.next;
+ while (qh_ptr != &hcd->periodic_sched_ready &&
+ !list_empty(&hcd->free_hc_list)) {
+
+ qh = list_entry(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+ assign_and_init_hc(hcd, qh);
+
+ /*
+ * Move the QH from the periodic ready schedule to the
+ * periodic assigned schedule.
+ */
+ qh_ptr = qh_ptr->next;
+ list_move(&qh->qh_list_entry, &hcd->periodic_sched_assigned);
+
+ ret_val = DWC_OTG_TRANSACTION_PERIODIC;
+ }
+
+ /*
+ * Process entries in the inactive portion of the non-periodic
+ * schedule. Some free host channels may not be used if they are
+ * reserved for periodic transfers.
+ */
+ qh_ptr = hcd->non_periodic_sched_inactive.next;
+ num_channels = hcd->core_if->core_params->host_channels;
+ while (qh_ptr != &hcd->non_periodic_sched_inactive &&
+ (hcd->non_periodic_channels <
+ num_channels - hcd->periodic_channels) &&
+ !list_empty(&hcd->free_hc_list)) {
+
+ qh = list_entry(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+ assign_and_init_hc(hcd, qh);
+
+ /*
+ * Move the QH from the non-periodic inactive schedule to the
+ * non-periodic active schedule.
+ */
+ qh_ptr = qh_ptr->next;
+ list_move(&qh->qh_list_entry, &hcd->non_periodic_sched_active);
+
+ if (ret_val == DWC_OTG_TRANSACTION_NONE) {
+ ret_val = DWC_OTG_TRANSACTION_NON_PERIODIC;
+ } else {
+ ret_val = DWC_OTG_TRANSACTION_ALL;
+ }
+
+ hcd->non_periodic_channels++;
+ }
+
+ return ret_val;
+}
+
+/**
+ * Attempts to queue a single transaction request for a host channel
+ * associated with either a periodic or non-periodic transfer. This function
+ * assumes that there is space available in the appropriate request queue. For
+ * an OUT transfer or SETUP transaction in Slave mode, it checks whether space
+ * is available in the appropriate Tx FIFO.
+ *
+ * @param hcd The HCD state structure.
+ * @param hc Host channel descriptor associated with either a periodic or
+ * non-periodic transfer.
+ * @param fifo_dwords_avail Number of DWORDs available in the periodic Tx
+ * FIFO for periodic transfers or the non-periodic Tx FIFO for non-periodic
+ * transfers.
+ *
+ * @return 1 if a request is queued and more requests may be needed to
+ * complete the transfer, 0 if no more requests are required for this
+ * transfer, -1 if there is insufficient space in the Tx FIFO.
+ */
+static int queue_transaction(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ uint16_t fifo_dwords_avail)
+{
+ int retval;
+
+ if (hcd->core_if->dma_enable) {
+ if (!hc->xfer_started) {
+ dwc_otg_hc_start_transfer(hcd->core_if, hc);
+ hc->qh->ping_state = 0;
+ }
+ retval = 0;
+ } else if (hc->halt_pending) {
+ /* Don't queue a request if the channel has been halted. */
+ retval = 0;
+ } else if (hc->halt_on_queue) {
+ dwc_otg_hc_halt(hcd->core_if, hc, hc->halt_status);
+ retval = 0;
+ } else if (hc->do_ping) {
+ if (!hc->xfer_started) {
+ dwc_otg_hc_start_transfer(hcd->core_if, hc);
+ }
+ retval = 0;
+ } else if (!hc->ep_is_in ||
+ hc->data_pid_start == DWC_OTG_HC_PID_SETUP) {
+ if ((fifo_dwords_avail * 4) >= hc->max_packet) {
+ if (!hc->xfer_started) {
+ dwc_otg_hc_start_transfer(hcd->core_if, hc);
+ retval = 1;
+ } else {
+ retval = dwc_otg_hc_continue_transfer(hcd->core_if, hc);
+ }
+ } else {
+ retval = -1;
+ }
+ } else {
+ if (!hc->xfer_started) {
+ dwc_otg_hc_start_transfer(hcd->core_if, hc);
+ retval = 1;
+ } else {
+ retval = dwc_otg_hc_continue_transfer(hcd->core_if, hc);
+ }
+ }
+
+ return retval;
+}
+
+/**
+ * Processes active non-periodic channels and queues transactions for these
+ * channels to the DWC_otg controller. After queueing transactions, the NP Tx
+ * FIFO Empty interrupt is enabled if there are more transactions to queue as
+ * NP Tx FIFO or request queue space becomes available. Otherwise, the NP Tx
+ * FIFO Empty interrupt is disabled.
+ */
+static void process_non_periodic_channels(dwc_otg_hcd_t *hcd)
+{
+ gnptxsts_data_t tx_status;
+ struct list_head *orig_qh_ptr;
+ dwc_otg_qh_t *qh;
+ int status;
+ int no_queue_space = 0;
+ int no_fifo_space = 0;
+ int more_to_do = 0;
+
+ dwc_otg_core_global_regs_t *global_regs = hcd->core_if->core_global_regs;
+
+ DWC_DEBUGPL(DBG_HCDV, "Queue non-periodic transactions\n");
+#ifdef DEBUG
+ tx_status.d32 = dwc_read_reg32(&global_regs->gnptxsts);
+ DWC_DEBUGPL(DBG_HCDV, " NP Tx Req Queue Space Avail (before queue): %d\n",
+ tx_status.b.nptxqspcavail);
+ DWC_DEBUGPL(DBG_HCDV, " NP Tx FIFO Space Avail (before queue): %d\n",
+ tx_status.b.nptxfspcavail);
+#endif
+ /*
+ * Keep track of the starting point. Skip over the start-of-list
+ * entry.
+ */
+ if (hcd->non_periodic_qh_ptr == &hcd->non_periodic_sched_active) {
+ hcd->non_periodic_qh_ptr = hcd->non_periodic_qh_ptr->next;
+ }
+ orig_qh_ptr = hcd->non_periodic_qh_ptr;
+
+ /*
+ * Process once through the active list or until no more space is
+ * available in the request queue or the Tx FIFO.
+ */
+ do {
+ tx_status.d32 = dwc_read_reg32(&global_regs->gnptxsts);
+ if (!hcd->core_if->dma_enable && tx_status.b.nptxqspcavail == 0) {
+ no_queue_space = 1;
+ break;
+ }
+
+ qh = list_entry(hcd->non_periodic_qh_ptr, dwc_otg_qh_t, qh_list_entry);
+ status = queue_transaction(hcd, qh->channel, tx_status.b.nptxfspcavail);
+
+ if (status > 0) {
+ more_to_do = 1;
+ } else if (status < 0) {
+ no_fifo_space = 1;
+ break;
+ }
+
+ /* Advance to next QH, skipping start-of-list entry. */
+ hcd->non_periodic_qh_ptr = hcd->non_periodic_qh_ptr->next;
+ if (hcd->non_periodic_qh_ptr == &hcd->non_periodic_sched_active) {
+ hcd->non_periodic_qh_ptr = hcd->non_periodic_qh_ptr->next;
+ }
+
+ } while (hcd->non_periodic_qh_ptr != orig_qh_ptr);
+
+ if (!hcd->core_if->dma_enable) {
+ gintmsk_data_t intr_mask = {.d32 = 0};
+ intr_mask.b.nptxfempty = 1;
+
+#ifdef DEBUG
+ tx_status.d32 = dwc_read_reg32(&global_regs->gnptxsts);
+ DWC_DEBUGPL(DBG_HCDV, " NP Tx Req Queue Space Avail (after queue): %d\n",
+ tx_status.b.nptxqspcavail);
+ DWC_DEBUGPL(DBG_HCDV, " NP Tx FIFO Space Avail (after queue): %d\n",
+ tx_status.b.nptxfspcavail);
+#endif
+ if (more_to_do || no_queue_space || no_fifo_space) {
+ /*
+ * May need to queue more transactions as the request
+ * queue or Tx FIFO empties. Enable the non-periodic
+ * Tx FIFO empty interrupt. (Always use the half-empty
+ * level to ensure that new requests are loaded as
+ * soon as possible.)
+ */
+ dwc_modify_reg32(&global_regs->gintmsk, 0, intr_mask.d32);
+ } else {
+ /*
+ * Disable the Tx FIFO empty interrupt since there are
+ * no more transactions that need to be queued right
+ * now. This function is called from interrupt
+ * handlers to queue more transactions as transfer
+ * states change.
+ */
+ dwc_modify_reg32(&global_regs->gintmsk, intr_mask.d32, 0);
+ }
+ }
+}
+
+/**
+ * Processes periodic channels for the next frame and queues transactions for
+ * these channels to the DWC_otg controller. After queueing transactions, the
+ * Periodic Tx FIFO Empty interrupt is enabled if there are more transactions
+ * to queue as Periodic Tx FIFO or request queue space becomes available.
+ * Otherwise, the Periodic Tx FIFO Empty interrupt is disabled.
+ */
+static void process_periodic_channels(dwc_otg_hcd_t *hcd)
+{
+ hptxsts_data_t tx_status;
+ struct list_head *qh_ptr;
+ dwc_otg_qh_t *qh;
+ int status;
+ int no_queue_space = 0;
+ int no_fifo_space = 0;
+
+ dwc_otg_host_global_regs_t *host_regs;
+ host_regs = hcd->core_if->host_if->host_global_regs;
+
+ DWC_DEBUGPL(DBG_HCDV, "Queue periodic transactions\n");
+#ifdef DEBUG
+ tx_status.d32 = dwc_read_reg32(&host_regs->hptxsts);
+ DWC_DEBUGPL(DBG_HCDV, " P Tx Req Queue Space Avail (before queue): %d\n",
+ tx_status.b.ptxqspcavail);
+ DWC_DEBUGPL(DBG_HCDV, " P Tx FIFO Space Avail (before queue): %d\n",
+ tx_status.b.ptxfspcavail);
+#endif
+
+ qh_ptr = hcd->periodic_sched_assigned.next;
+ while (qh_ptr != &hcd->periodic_sched_assigned) {
+ tx_status.d32 = dwc_read_reg32(&host_regs->hptxsts);
+ if (tx_status.b.ptxqspcavail == 0) {
+ no_queue_space = 1;
+ break;
+ }
+
+ qh = list_entry(qh_ptr, dwc_otg_qh_t, qh_list_entry);
+
+ /*
+ * Set a flag if we're queuing high-bandwidth in slave mode.
+ * The flag prevents any halts to get into the request queue in
+ * the middle of multiple high-bandwidth packets getting queued.
+ */
+ if (!hcd->core_if->dma_enable &&
+ qh->channel->multi_count > 1)
+ {
+ hcd->core_if->queuing_high_bandwidth = 1;
+ }
+
+ status = queue_transaction(hcd, qh->channel, tx_status.b.ptxfspcavail);
+ if (status < 0) {
+ no_fifo_space = 1;
+ break;
+ }
+
+ /*
+ * In Slave mode, stay on the current transfer until there is
+ * nothing more to do or the high-bandwidth request count is
+ * reached. In DMA mode, only need to queue one request. The
+ * controller automatically handles multiple packets for
+ * high-bandwidth transfers.
+ */
+ if (hcd->core_if->dma_enable || status == 0 ||
+ qh->channel->requests == qh->channel->multi_count) {
+ qh_ptr = qh_ptr->next;
+ /*
+ * Move the QH from the periodic assigned schedule to
+ * the periodic queued schedule.
+ */
+ list_move(&qh->qh_list_entry, &hcd->periodic_sched_queued);
+
+ /* done queuing high bandwidth */
+ hcd->core_if->queuing_high_bandwidth = 0;
+ }
+ }
+
+ if (!hcd->core_if->dma_enable) {
+ dwc_otg_core_global_regs_t *global_regs;
+ gintmsk_data_t intr_mask = {.d32 = 0};
+
+ global_regs = hcd->core_if->core_global_regs;
+ intr_mask.b.ptxfempty = 1;
+#ifdef DEBUG
+ tx_status.d32 = dwc_read_reg32(&host_regs->hptxsts);
+ DWC_DEBUGPL(DBG_HCDV, " P Tx Req Queue Space Avail (after queue): %d\n",
+ tx_status.b.ptxqspcavail);
+ DWC_DEBUGPL(DBG_HCDV, " P Tx FIFO Space Avail (after queue): %d\n",
+ tx_status.b.ptxfspcavail);
+#endif
+ if (!list_empty(&hcd->periodic_sched_assigned) ||
+ no_queue_space || no_fifo_space) {
+ /*
+ * May need to queue more transactions as the request
+ * queue or Tx FIFO empties. Enable the periodic Tx
+ * FIFO empty interrupt. (Always use the half-empty
+ * level to ensure that new requests are loaded as
+ * soon as possible.)
+ */
+ dwc_modify_reg32(&global_regs->gintmsk, 0, intr_mask.d32);
+ } else {
+ /*
+ * Disable the Tx FIFO empty interrupt since there are
+ * no more transactions that need to be queued right
+ * now. This function is called from interrupt
+ * handlers to queue more transactions as transfer
+ * states change.
+ */
+ dwc_modify_reg32(&global_regs->gintmsk, intr_mask.d32, 0);
+ }
+ }
+}
+
+/**
+ * This function processes the currently active host channels and queues
+ * transactions for these channels to the DWC_otg controller. It is called
+ * from HCD interrupt handler functions.
+ *
+ * @param hcd The HCD state structure.
+ * @param tr_type The type(s) of transactions to queue (non-periodic,
+ * periodic, or both).
+ */
+void dwc_otg_hcd_queue_transactions(dwc_otg_hcd_t *hcd,
+ dwc_otg_transaction_type_e tr_type)
+{
+#ifdef DEBUG_SOF
+ DWC_DEBUGPL(DBG_HCD, "Queue Transactions\n");
+#endif
+ /* Process host channels associated with periodic transfers. */
+ if ((tr_type == DWC_OTG_TRANSACTION_PERIODIC ||
+ tr_type == DWC_OTG_TRANSACTION_ALL) &&
+ !list_empty(&hcd->periodic_sched_assigned)) {
+
+ process_periodic_channels(hcd);
+ }
+
+ /* Process host channels associated with non-periodic transfers. */
+ if (tr_type == DWC_OTG_TRANSACTION_NON_PERIODIC ||
+ tr_type == DWC_OTG_TRANSACTION_ALL) {
+ if (!list_empty(&hcd->non_periodic_sched_active)) {
+ process_non_periodic_channels(hcd);
+ } else {
+ /*
+ * Ensure NP Tx FIFO empty interrupt is disabled when
+ * there are no non-periodic transfers to process.
+ */
+ gintmsk_data_t gintmsk = {.d32 = 0};
+ gintmsk.b.nptxfempty = 1;
+ dwc_modify_reg32(&hcd->core_if->core_global_regs->gintmsk,
+ gintmsk.d32, 0);
+ }
+ }
+}
+
+/**
+ * Sets the final status of an URB and returns it to the device driver. Any
+ * required cleanup of the URB is performed.
+ */
+void dwc_otg_hcd_complete_urb(dwc_otg_hcd_t *hcd, struct urb *urb, int status)
+{
+#ifdef DEBUG
+ if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
+ DWC_PRINT("%s: urb %p, device %d, ep %d %s, status=%d\n",
+ __func__, urb, usb_pipedevice(urb->pipe),
+ usb_pipeendpoint(urb->pipe),
+ usb_pipein(urb->pipe) ? "IN" : "OUT", status);
+ if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+ int i;
+ for (i = 0; i < urb->number_of_packets; i++) {
+ DWC_PRINT(" ISO Desc %d status: %d\n",
+ i, urb->iso_frame_desc[i].status);
+ }
+ }
+ }
+#endif
+
+ urb->status = status;
+ urb->hcpriv = NULL;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ usb_hcd_giveback_urb(dwc_otg_hcd_to_hcd(hcd), urb, status);
+#else
+ usb_hcd_giveback_urb(dwc_otg_hcd_to_hcd(hcd), urb, NULL);
+#endif
+}
+
+/*
+ * Returns the Queue Head for an URB.
+ */
+dwc_otg_qh_t *dwc_urb_to_qh(struct urb *urb)
+{
+ struct usb_host_endpoint *ep = dwc_urb_to_endpoint(urb);
+ return (dwc_otg_qh_t *)ep->hcpriv;
+}
+
+#ifdef DEBUG
+void dwc_print_setup_data(uint8_t *setup)
+{
+ int i;
+ if (CHK_DEBUG_LEVEL(DBG_HCD)){
+ DWC_PRINT("Setup Data = MSB ");
+ for (i = 7; i >= 0; i--) DWC_PRINT("%02x ", setup[i]);
+ DWC_PRINT("\n");
+ DWC_PRINT(" bmRequestType Tranfer = %s\n", (setup[0] & 0x80) ? "Device-to-Host" : "Host-to-Device");
+ DWC_PRINT(" bmRequestType Type = ");
+ switch ((setup[0] & 0x60) >> 5) {
+ case 0: DWC_PRINT("Standard\n"); break;
+ case 1: DWC_PRINT("Class\n"); break;
+ case 2: DWC_PRINT("Vendor\n"); break;
+ case 3: DWC_PRINT("Reserved\n"); break;
+ }
+ DWC_PRINT(" bmRequestType Recipient = ");
+ switch (setup[0] & 0x1f) {
+ case 0: DWC_PRINT("Device\n"); break;
+ case 1: DWC_PRINT("Interface\n"); break;
+ case 2: DWC_PRINT("Endpoint\n"); break;
+ case 3: DWC_PRINT("Other\n"); break;
+ default: DWC_PRINT("Reserved\n"); break;
+ }
+ DWC_PRINT(" bRequest = 0x%0x\n", setup[1]);
+ DWC_PRINT(" wValue = 0x%0x\n", *((uint16_t *)&setup[2]));
+ DWC_PRINT(" wIndex = 0x%0x\n", *((uint16_t *)&setup[4]));
+ DWC_PRINT(" wLength = 0x%0x\n\n", *((uint16_t *)&setup[6]));
+ }
+}
+#endif
+
+void dwc_otg_hcd_dump_frrem(dwc_otg_hcd_t *hcd) {
+#if defined(DEBUG) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ DWC_PRINT("Frame remaining at SOF:\n");
+ DWC_PRINT(" samples %u, accum %llu, avg %llu\n",
+ hcd->frrem_samples, hcd->frrem_accum,
+ (hcd->frrem_samples > 0) ?
+ hcd->frrem_accum/hcd->frrem_samples : 0);
+
+ DWC_PRINT("\n");
+ DWC_PRINT("Frame remaining at start_transfer (uframe 7):\n");
+ DWC_PRINT(" samples %u, accum %llu, avg %llu\n",
+ hcd->core_if->hfnum_7_samples, hcd->core_if->hfnum_7_frrem_accum,
+ (hcd->core_if->hfnum_7_samples > 0) ?
+ hcd->core_if->hfnum_7_frrem_accum/hcd->core_if->hfnum_7_samples : 0);
+ DWC_PRINT("Frame remaining at start_transfer (uframe 0):\n");
+ DWC_PRINT(" samples %u, accum %llu, avg %llu\n",
+ hcd->core_if->hfnum_0_samples, hcd->core_if->hfnum_0_frrem_accum,
+ (hcd->core_if->hfnum_0_samples > 0) ?
+ hcd->core_if->hfnum_0_frrem_accum/hcd->core_if->hfnum_0_samples : 0);
+ DWC_PRINT("Frame remaining at start_transfer (uframe 1-6):\n");
+ DWC_PRINT(" samples %u, accum %llu, avg %llu\n",
+ hcd->core_if->hfnum_other_samples, hcd->core_if->hfnum_other_frrem_accum,
+ (hcd->core_if->hfnum_other_samples > 0) ?
+ hcd->core_if->hfnum_other_frrem_accum/hcd->core_if->hfnum_other_samples : 0);
+
+ DWC_PRINT("\n");
+ DWC_PRINT("Frame remaining at sample point A (uframe 7):\n");
+ DWC_PRINT(" samples %u, accum %llu, avg %llu\n",
+ hcd->hfnum_7_samples_a, hcd->hfnum_7_frrem_accum_a,
+ (hcd->hfnum_7_samples_a > 0) ?
+ hcd->hfnum_7_frrem_accum_a/hcd->hfnum_7_samples_a : 0);
+ DWC_PRINT("Frame remaining at sample point A (uframe 0):\n");
+ DWC_PRINT(" samples %u, accum %llu, avg %llu\n",
+ hcd->hfnum_0_samples_a, hcd->hfnum_0_frrem_accum_a,
+ (hcd->hfnum_0_samples_a > 0) ?
+ hcd->hfnum_0_frrem_accum_a/hcd->hfnum_0_samples_a : 0);
+ DWC_PRINT("Frame remaining at sample point A (uframe 1-6):\n");
+ DWC_PRINT(" samples %u, accum %llu, avg %llu\n",
+ hcd->hfnum_other_samples_a, hcd->hfnum_other_frrem_accum_a,
+ (hcd->hfnum_other_samples_a > 0) ?
+ hcd->hfnum_other_frrem_accum_a/hcd->hfnum_other_samples_a : 0);
+
+ DWC_PRINT("\n");
+ DWC_PRINT("Frame remaining at sample point B (uframe 7):\n");
+ DWC_PRINT(" samples %u, accum %llu, avg %llu\n",
+ hcd->hfnum_7_samples_b, hcd->hfnum_7_frrem_accum_b,
+ (hcd->hfnum_7_samples_b > 0) ?
+ hcd->hfnum_7_frrem_accum_b/hcd->hfnum_7_samples_b : 0);
+ DWC_PRINT("Frame remaining at sample point B (uframe 0):\n");
+ DWC_PRINT(" samples %u, accum %llu, avg %llu\n",
+ hcd->hfnum_0_samples_b, hcd->hfnum_0_frrem_accum_b,
+ (hcd->hfnum_0_samples_b > 0) ?
+ hcd->hfnum_0_frrem_accum_b/hcd->hfnum_0_samples_b : 0);
+ DWC_PRINT("Frame remaining at sample point B (uframe 1-6):\n");
+ DWC_PRINT(" samples %u, accum %llu, avg %llu\n",
+ hcd->hfnum_other_samples_b, hcd->hfnum_other_frrem_accum_b,
+ (hcd->hfnum_other_samples_b > 0) ?
+ hcd->hfnum_other_frrem_accum_b/hcd->hfnum_other_samples_b : 0);
+#endif
+}
+
+void dwc_otg_hcd_dump_state(dwc_otg_hcd_t *hcd)
+{
+#ifdef DEBUG
+ int num_channels;
+ int i;
+ gnptxsts_data_t np_tx_status;
+ hptxsts_data_t p_tx_status;
+
+ num_channels = hcd->core_if->core_params->host_channels;
+ DWC_PRINT("\n");
+ DWC_PRINT("************************************************************\n");
+ DWC_PRINT("HCD State:\n");
+ DWC_PRINT(" Num channels: %d\n", num_channels);
+ for (i = 0; i < num_channels; i++) {
+ dwc_hc_t *hc = hcd->hc_ptr_array[i];
+ DWC_PRINT(" Channel %d:\n", i);
+ DWC_PRINT(" dev_addr: %d, ep_num: %d, ep_is_in: %d\n",
+ hc->dev_addr, hc->ep_num, hc->ep_is_in);
+ DWC_PRINT(" speed: %d\n", hc->speed);
+ DWC_PRINT(" ep_type: %d\n", hc->ep_type);
+ DWC_PRINT(" max_packet: %d\n", hc->max_packet);
+ DWC_PRINT(" data_pid_start: %d\n", hc->data_pid_start);
+ DWC_PRINT(" multi_count: %d\n", hc->multi_count);
+ DWC_PRINT(" xfer_started: %d\n", hc->xfer_started);
+ DWC_PRINT(" xfer_buff: %p\n", hc->xfer_buff);
+ DWC_PRINT(" xfer_len: %d\n", hc->xfer_len);
+ DWC_PRINT(" xfer_count: %d\n", hc->xfer_count);
+ DWC_PRINT(" halt_on_queue: %d\n", hc->halt_on_queue);
+ DWC_PRINT(" halt_pending: %d\n", hc->halt_pending);
+ DWC_PRINT(" halt_status: %d\n", hc->halt_status);
+ DWC_PRINT(" do_split: %d\n", hc->do_split);
+ DWC_PRINT(" complete_split: %d\n", hc->complete_split);
+ DWC_PRINT(" hub_addr: %d\n", hc->hub_addr);
+ DWC_PRINT(" port_addr: %d\n", hc->port_addr);
+ DWC_PRINT(" xact_pos: %d\n", hc->xact_pos);
+ DWC_PRINT(" requests: %d\n", hc->requests);
+ DWC_PRINT(" qh: %p\n", hc->qh);
+ if (hc->xfer_started) {
+ hfnum_data_t hfnum;
+ hcchar_data_t hcchar;
+ hctsiz_data_t hctsiz;
+ hcint_data_t hcint;
+ hcintmsk_data_t hcintmsk;
+ hfnum.d32 = dwc_read_reg32(&hcd->core_if->host_if->host_global_regs->hfnum);
+ hcchar.d32 = dwc_read_reg32(&hcd->core_if->host_if->hc_regs[i]->hcchar);
+ hctsiz.d32 = dwc_read_reg32(&hcd->core_if->host_if->hc_regs[i]->hctsiz);
+ hcint.d32 = dwc_read_reg32(&hcd->core_if->host_if->hc_regs[i]->hcint);
+ hcintmsk.d32 = dwc_read_reg32(&hcd->core_if->host_if->hc_regs[i]->hcintmsk);
+ DWC_PRINT(" hfnum: 0x%08x\n", hfnum.d32);
+ DWC_PRINT(" hcchar: 0x%08x\n", hcchar.d32);
+ DWC_PRINT(" hctsiz: 0x%08x\n", hctsiz.d32);
+ DWC_PRINT(" hcint: 0x%08x\n", hcint.d32);
+ DWC_PRINT(" hcintmsk: 0x%08x\n", hcintmsk.d32);
+ }
+ if (hc->xfer_started && hc->qh && hc->qh->qtd_in_process) {
+ dwc_otg_qtd_t *qtd;
+ struct urb *urb;
+ qtd = hc->qh->qtd_in_process;
+ urb = qtd->urb;
+ DWC_PRINT(" URB Info:\n");
+ DWC_PRINT(" qtd: %p, urb: %p\n", qtd, urb);
+ if (urb) {
+ DWC_PRINT(" Dev: %d, EP: %d %s\n",
+ usb_pipedevice(urb->pipe), usb_pipeendpoint(urb->pipe),
+ usb_pipein(urb->pipe) ? "IN" : "OUT");
+ DWC_PRINT(" Max packet size: %d\n",
+ usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)));
+ DWC_PRINT(" transfer_buffer: %p\n", urb->transfer_buffer);
+ DWC_PRINT(" transfer_dma: %p\n", (void *)urb->transfer_dma);
+ DWC_PRINT(" transfer_buffer_length: %d\n", urb->transfer_buffer_length);
+ DWC_PRINT(" actual_length: %d\n", urb->actual_length);
+ }
+ }
+ }
+ DWC_PRINT(" non_periodic_channels: %d\n", hcd->non_periodic_channels);
+ DWC_PRINT(" periodic_channels: %d\n", hcd->periodic_channels);
+ DWC_PRINT(" periodic_usecs: %d\n", hcd->periodic_usecs);
+ np_tx_status.d32 = dwc_read_reg32(&hcd->core_if->core_global_regs->gnptxsts);
+ DWC_PRINT(" NP Tx Req Queue Space Avail: %d\n", np_tx_status.b.nptxqspcavail);
+ DWC_PRINT(" NP Tx FIFO Space Avail: %d\n", np_tx_status.b.nptxfspcavail);
+ p_tx_status.d32 = dwc_read_reg32(&hcd->core_if->host_if->host_global_regs->hptxsts);
+ DWC_PRINT(" P Tx Req Queue Space Avail: %d\n", p_tx_status.b.ptxqspcavail);
+ DWC_PRINT(" P Tx FIFO Space Avail: %d\n", p_tx_status.b.ptxfspcavail);
+ dwc_otg_hcd_dump_frrem(hcd);
+ dwc_otg_dump_global_registers(hcd->core_if);
+ dwc_otg_dump_host_registers(hcd->core_if);
+ DWC_PRINT("************************************************************\n");
+ DWC_PRINT("\n");
+#endif
+}
+#endif /* DWC_DEVICE_ONLY */
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd.h $
+ * $Revision: 1.3 $
+ * $Date: 2008-12-15 06:51:32 $
+ * $Change: 1064918 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+#ifndef __DWC_HCD_H__
+#define __DWC_HCD_H__
+
+#include <linux/list.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+struct dwc_otg_device;
+
+#include "dwc_otg_cil.h"
+
+/**
+ * @file
+ *
+ * This file contains the structures, constants, and interfaces for
+ * the Host Contoller Driver (HCD).
+ *
+ * The Host Controller Driver (HCD) is responsible for translating requests
+ * from the USB Driver into the appropriate actions on the DWC_otg controller.
+ * It isolates the USBD from the specifics of the controller by providing an
+ * API to the USBD.
+ */
+
+/**
+ * Phases for control transfers.
+ */
+typedef enum dwc_otg_control_phase {
+ DWC_OTG_CONTROL_SETUP,
+ DWC_OTG_CONTROL_DATA,
+ DWC_OTG_CONTROL_STATUS
+} dwc_otg_control_phase_e;
+
+/** Transaction types. */
+typedef enum dwc_otg_transaction_type {
+ DWC_OTG_TRANSACTION_NONE,
+ DWC_OTG_TRANSACTION_PERIODIC,
+ DWC_OTG_TRANSACTION_NON_PERIODIC,
+ DWC_OTG_TRANSACTION_ALL
+} dwc_otg_transaction_type_e;
+
+/**
+ * A Queue Transfer Descriptor (QTD) holds the state of a bulk, control,
+ * interrupt, or isochronous transfer. A single QTD is created for each URB
+ * (of one of these types) submitted to the HCD. The transfer associated with
+ * a QTD may require one or multiple transactions.
+ *
+ * A QTD is linked to a Queue Head, which is entered in either the
+ * non-periodic or periodic schedule for execution. When a QTD is chosen for
+ * execution, some or all of its transactions may be executed. After
+ * execution, the state of the QTD is updated. The QTD may be retired if all
+ * its transactions are complete or if an error occurred. Otherwise, it
+ * remains in the schedule so more transactions can be executed later.
+ */
+typedef struct dwc_otg_qtd {
+ /**
+ * Determines the PID of the next data packet for the data phase of
+ * control transfers. Ignored for other transfer types.<br>
+ * One of the following values:
+ * - DWC_OTG_HC_PID_DATA0
+ * - DWC_OTG_HC_PID_DATA1
+ */
+ uint8_t data_toggle;
+
+ /** Current phase for control transfers (Setup, Data, or Status). */
+ dwc_otg_control_phase_e control_phase;
+
+ /** Keep track of the current split type
+ * for FS/LS endpoints on a HS Hub */
+ uint8_t complete_split;
+
+ /** How many bytes transferred during SSPLIT OUT */
+ uint32_t ssplit_out_xfer_count;
+
+ /**
+ * Holds the number of bus errors that have occurred for a transaction
+ * within this transfer.
+ */
+ uint8_t error_count;
+
+ /**
+ * Index of the next frame descriptor for an isochronous transfer. A
+ * frame descriptor describes the buffer position and length of the
+ * data to be transferred in the next scheduled (micro)frame of an
+ * isochronous transfer. It also holds status for that transaction.
+ * The frame index starts at 0.
+ */
+ int isoc_frame_index;
+
+ /** Position of the ISOC split on full/low speed */
+ uint8_t isoc_split_pos;
+
+ /** Position of the ISOC split in the buffer for the current frame */
+ uint16_t isoc_split_offset;
+
+ /** URB for this transfer */
+ struct urb *urb;
+
+ /** This list of QTDs */
+ struct list_head qtd_list_entry;
+
+} dwc_otg_qtd_t;
+
+/**
+ * A Queue Head (QH) holds the static characteristics of an endpoint and
+ * maintains a list of transfers (QTDs) for that endpoint. A QH structure may
+ * be entered in either the non-periodic or periodic schedule.
+ */
+typedef struct dwc_otg_qh {
+ /**
+ * Endpoint type.
+ * One of the following values:
+ * - USB_ENDPOINT_XFER_CONTROL
+ * - USB_ENDPOINT_XFER_ISOC
+ * - USB_ENDPOINT_XFER_BULK
+ * - USB_ENDPOINT_XFER_INT
+ */
+ uint8_t ep_type;
+ uint8_t ep_is_in;
+
+ /** wMaxPacketSize Field of Endpoint Descriptor. */
+ uint16_t maxp;
+
+ /**
+ * Determines the PID of the next data packet for non-control
+ * transfers. Ignored for control transfers.<br>
+ * One of the following values:
+ * - DWC_OTG_HC_PID_DATA0
+ * - DWC_OTG_HC_PID_DATA1
+ */
+ uint8_t data_toggle;
+
+ /** Ping state if 1. */
+ uint8_t ping_state;
+
+ /**
+ * List of QTDs for this QH.
+ */
+ struct list_head qtd_list;
+
+ /** Host channel currently processing transfers for this QH. */
+ dwc_hc_t *channel;
+
+ /** QTD currently assigned to a host channel for this QH. */
+ dwc_otg_qtd_t *qtd_in_process;
+
+ /** Full/low speed endpoint on high-speed hub requires split. */
+ uint8_t do_split;
+
+ /** @name Periodic schedule information */
+ /** @{ */
+
+ /** Bandwidth in microseconds per (micro)frame. */
+ uint8_t usecs;
+
+ /** Interval between transfers in (micro)frames. */
+ uint16_t interval;
+
+ /**
+ * (micro)frame to initialize a periodic transfer. The transfer
+ * executes in the following (micro)frame.
+ */
+ uint16_t sched_frame;
+
+ /** (micro)frame at which last start split was initialized. */
+ uint16_t start_split_frame;
+
+ /** @} */
+
+ /** Entry for QH in either the periodic or non-periodic schedule. */
+ struct list_head qh_list_entry;
+
+ /* For non-dword aligned buffer support */
+ uint8_t *dw_align_buf;
+ dma_addr_t dw_align_buf_dma;
+} dwc_otg_qh_t;
+
+/**
+ * This structure holds the state of the HCD, including the non-periodic and
+ * periodic schedules.
+ */
+typedef struct dwc_otg_hcd {
+ /** The DWC otg device pointer */
+ struct dwc_otg_device *otg_dev;
+
+ /** DWC OTG Core Interface Layer */
+ dwc_otg_core_if_t *core_if;
+
+ /** Internal DWC HCD Flags */
+ volatile union dwc_otg_hcd_internal_flags {
+ uint32_t d32;
+ struct {
+ unsigned port_connect_status_change : 1;
+ unsigned port_connect_status : 1;
+ unsigned port_reset_change : 1;
+ unsigned port_enable_change : 1;
+ unsigned port_suspend_change : 1;
+ unsigned port_over_current_change : 1;
+ unsigned reserved : 27;
+ } b;
+ } flags;
+
+ /**
+ * Inactive items in the non-periodic schedule. This is a list of
+ * Queue Heads. Transfers associated with these Queue Heads are not
+ * currently assigned to a host channel.
+ */
+ struct list_head non_periodic_sched_inactive;
+
+ /**
+ * Active items in the non-periodic schedule. This is a list of
+ * Queue Heads. Transfers associated with these Queue Heads are
+ * currently assigned to a host channel.
+ */
+ struct list_head non_periodic_sched_active;
+
+ /**
+ * Pointer to the next Queue Head to process in the active
+ * non-periodic schedule.
+ */
+ struct list_head *non_periodic_qh_ptr;
+
+ /**
+ * Inactive items in the periodic schedule. This is a list of QHs for
+ * periodic transfers that are _not_ scheduled for the next frame.
+ * Each QH in the list has an interval counter that determines when it
+ * needs to be scheduled for execution. This scheduling mechanism
+ * allows only a simple calculation for periodic bandwidth used (i.e.
+ * must assume that all periodic transfers may need to execute in the
+ * same frame). However, it greatly simplifies scheduling and should
+ * be sufficient for the vast majority of OTG hosts, which need to
+ * connect to a small number of peripherals at one time.
+ *
+ * Items move from this list to periodic_sched_ready when the QH
+ * interval counter is 0 at SOF.
+ */
+ struct list_head periodic_sched_inactive;
+
+ /**
+ * List of periodic QHs that are ready for execution in the next
+ * frame, but have not yet been assigned to host channels.
+ *
+ * Items move from this list to periodic_sched_assigned as host
+ * channels become available during the current frame.
+ */
+ struct list_head periodic_sched_ready;
+
+ /**
+ * List of periodic QHs to be executed in the next frame that are
+ * assigned to host channels.
+ *
+ * Items move from this list to periodic_sched_queued as the
+ * transactions for the QH are queued to the DWC_otg controller.
+ */
+ struct list_head periodic_sched_assigned;
+
+ /**
+ * List of periodic QHs that have been queued for execution.
+ *
+ * Items move from this list to either periodic_sched_inactive or
+ * periodic_sched_ready when the channel associated with the transfer
+ * is released. If the interval for the QH is 1, the item moves to
+ * periodic_sched_ready because it must be rescheduled for the next
+ * frame. Otherwise, the item moves to periodic_sched_inactive.
+ */
+ struct list_head periodic_sched_queued;
+
+ /**
+ * Total bandwidth claimed so far for periodic transfers. This value
+ * is in microseconds per (micro)frame. The assumption is that all
+ * periodic transfers may occur in the same (micro)frame.
+ */
+ uint16_t periodic_usecs;
+
+ /**
+ * Frame number read from the core at SOF. The value ranges from 0 to
+ * DWC_HFNUM_MAX_FRNUM.
+ */
+ uint16_t frame_number;
+
+ /**
+ * Free host channels in the controller. This is a list of
+ * dwc_hc_t items.
+ */
+ struct list_head free_hc_list;
+
+ /**
+ * Number of host channels assigned to periodic transfers. Currently
+ * assuming that there is a dedicated host channel for each periodic
+ * transaction and at least one host channel available for
+ * non-periodic transactions.
+ */
+ int periodic_channels;
+
+ /**
+ * Number of host channels assigned to non-periodic transfers.
+ */
+ int non_periodic_channels;
+
+ /**
+ * Array of pointers to the host channel descriptors. Allows accessing
+ * a host channel descriptor given the host channel number. This is
+ * useful in interrupt handlers.
+ */
+ dwc_hc_t *hc_ptr_array[MAX_EPS_CHANNELS];
+
+ /**
+ * Buffer to use for any data received during the status phase of a
+ * control transfer. Normally no data is transferred during the status
+ * phase. This buffer is used as a bit bucket.
+ */
+ uint8_t *status_buf;
+
+ /**
+ * DMA address for status_buf.
+ */
+ dma_addr_t status_buf_dma;
+#define DWC_OTG_HCD_STATUS_BUF_SIZE 64
+
+ /**
+ * Structure to allow starting the HCD in a non-interrupt context
+ * during an OTG role change.
+ */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ struct work_struct start_work;
+#else
+ struct delayed_work start_work;
+#endif
+
+ /**
+ * Connection timer. An OTG host must display a message if the device
+ * does not connect. Started when the VBus power is turned on via
+ * sysfs attribute "buspower".
+ */
+ struct timer_list conn_timer;
+
+ /* Tasket to do a reset */
+ struct tasklet_struct *reset_tasklet;
+
+ /* */
+ spinlock_t lock;
+
+#ifdef DEBUG
+ uint32_t frrem_samples;
+ uint64_t frrem_accum;
+
+ uint32_t hfnum_7_samples_a;
+ uint64_t hfnum_7_frrem_accum_a;
+ uint32_t hfnum_0_samples_a;
+ uint64_t hfnum_0_frrem_accum_a;
+ uint32_t hfnum_other_samples_a;
+ uint64_t hfnum_other_frrem_accum_a;
+
+ uint32_t hfnum_7_samples_b;
+ uint64_t hfnum_7_frrem_accum_b;
+ uint32_t hfnum_0_samples_b;
+ uint64_t hfnum_0_frrem_accum_b;
+ uint32_t hfnum_other_samples_b;
+ uint64_t hfnum_other_frrem_accum_b;
+#endif
+} dwc_otg_hcd_t;
+
+/** Gets the dwc_otg_hcd from a struct usb_hcd */
+static inline dwc_otg_hcd_t *hcd_to_dwc_otg_hcd(struct usb_hcd *hcd)
+{
+ return (dwc_otg_hcd_t *)(hcd->hcd_priv);
+}
+
+/** Gets the struct usb_hcd that contains a dwc_otg_hcd_t. */
+static inline struct usb_hcd *dwc_otg_hcd_to_hcd(dwc_otg_hcd_t *dwc_otg_hcd)
+{
+ return container_of((void *)dwc_otg_hcd, struct usb_hcd, hcd_priv);
+}
+
+/** @name HCD Create/Destroy Functions */
+/** @{ */
+extern int dwc_otg_hcd_init(struct device *dev);
+extern void dwc_otg_hcd_remove(struct device *dev);
+/** @} */
+
+/** @name Linux HC Driver API Functions */
+/** @{ */
+
+extern int dwc_otg_hcd_start(struct usb_hcd *hcd);
+extern void dwc_otg_hcd_stop(struct usb_hcd *hcd);
+extern int dwc_otg_hcd_get_frame_number(struct usb_hcd *hcd);
+extern void dwc_otg_hcd_free(struct usb_hcd *hcd);
+extern int dwc_otg_hcd_urb_enqueue(struct usb_hcd *hcd,
+ struct urb *urb,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ int mem_flags
+#else
+ gfp_t mem_flags
+#endif
+ );
+extern int dwc_otg_hcd_urb_dequeue(struct usb_hcd *hcd,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+#endif
+ struct urb *urb, int status);
+extern void dwc_otg_hcd_endpoint_disable(struct usb_hcd *hcd,
+ struct usb_host_endpoint *ep);
+extern irqreturn_t dwc_otg_hcd_irq(struct usb_hcd *hcd
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ , struct pt_regs *regs
+#endif
+ );
+extern int dwc_otg_hcd_hub_status_data(struct usb_hcd *hcd,
+ char *buf);
+extern int dwc_otg_hcd_hub_control(struct usb_hcd *hcd,
+ u16 typeReq,
+ u16 wValue,
+ u16 wIndex,
+ char *buf,
+ u16 wLength);
+
+/** @} */
+
+/** @name Transaction Execution Functions */
+/** @{ */
+extern dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t *hcd);
+extern void dwc_otg_hcd_queue_transactions(dwc_otg_hcd_t *hcd,
+ dwc_otg_transaction_type_e tr_type);
+extern void dwc_otg_hcd_complete_urb(dwc_otg_hcd_t *_hcd, struct urb *urb,
+ int status);
+/** @} */
+
+/** @name Interrupt Handler Functions */
+/** @{ */
+extern int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t *dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd_t *dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_rx_status_q_level_intr(dwc_otg_hcd_t *dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_np_tx_fifo_empty_intr(dwc_otg_hcd_t *dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_perio_tx_fifo_empty_intr(dwc_otg_hcd_t *dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_incomplete_periodic_intr(dwc_otg_hcd_t *dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_port_intr(dwc_otg_hcd_t *dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_conn_id_status_change_intr(dwc_otg_hcd_t *dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_disconnect_intr(dwc_otg_hcd_t *dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_hc_intr(dwc_otg_hcd_t *dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_hc_n_intr(dwc_otg_hcd_t *dwc_otg_hcd, uint32_t num);
+extern int32_t dwc_otg_hcd_handle_session_req_intr(dwc_otg_hcd_t *dwc_otg_hcd);
+extern int32_t dwc_otg_hcd_handle_wakeup_detected_intr(dwc_otg_hcd_t *dwc_otg_hcd);
+/** @} */
+
+
+/** @name Schedule Queue Functions */
+/** @{ */
+
+/* Implemented in dwc_otg_hcd_queue.c */
+extern dwc_otg_qh_t *dwc_otg_hcd_qh_create(dwc_otg_hcd_t *hcd, struct urb *urb);
+extern void dwc_otg_hcd_qh_init(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh, struct urb *urb);
+extern void dwc_otg_hcd_qh_free(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh);
+extern int dwc_otg_hcd_qh_add(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh);
+extern void dwc_otg_hcd_qh_remove(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh);
+extern void dwc_otg_hcd_qh_deactivate(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh, int sched_csplit);
+
+/** Remove and free a QH */
+static inline void dwc_otg_hcd_qh_remove_and_free(dwc_otg_hcd_t *hcd,
+ dwc_otg_qh_t *qh)
+{
+ dwc_otg_hcd_qh_remove(hcd, qh);
+ dwc_otg_hcd_qh_free(hcd, qh);
+}
+
+/** Allocates memory for a QH structure.
+ * @return Returns the memory allocate or NULL on error. */
+static inline dwc_otg_qh_t *dwc_otg_hcd_qh_alloc(void)
+{
+ return (dwc_otg_qh_t *) kmalloc(sizeof(dwc_otg_qh_t), GFP_KERNEL);
+}
+
+extern dwc_otg_qtd_t *dwc_otg_hcd_qtd_create(struct urb *urb);
+extern void dwc_otg_hcd_qtd_init(dwc_otg_qtd_t *qtd, struct urb *urb);
+extern int dwc_otg_hcd_qtd_add(dwc_otg_qtd_t *qtd, dwc_otg_hcd_t *dwc_otg_hcd);
+
+/** Allocates memory for a QTD structure.
+ * @return Returns the memory allocate or NULL on error. */
+static inline dwc_otg_qtd_t *dwc_otg_hcd_qtd_alloc(void)
+{
+ return (dwc_otg_qtd_t *) kmalloc(sizeof(dwc_otg_qtd_t), GFP_KERNEL);
+}
+
+/** Frees the memory for a QTD structure. QTD should already be removed from
+ * list.
+ * @param[in] qtd QTD to free.*/
+static inline void dwc_otg_hcd_qtd_free(dwc_otg_qtd_t *qtd)
+{
+ kfree(qtd);
+}
+
+/** Removes a QTD from list.
+ * @param[in] hcd HCD instance.
+ * @param[in] qtd QTD to remove from list. */
+static inline void dwc_otg_hcd_qtd_remove(dwc_otg_hcd_t *hcd, dwc_otg_qtd_t *qtd)
+{
+ unsigned long flags;
+ SPIN_LOCK_IRQSAVE(&hcd->lock, flags);
+ list_del(&qtd->qtd_list_entry);
+ SPIN_UNLOCK_IRQRESTORE(&hcd->lock, flags);
+}
+
+/** Remove and free a QTD */
+static inline void dwc_otg_hcd_qtd_remove_and_free(dwc_otg_hcd_t *hcd, dwc_otg_qtd_t *qtd)
+{
+ dwc_otg_hcd_qtd_remove(hcd, qtd);
+ dwc_otg_hcd_qtd_free(qtd);
+}
+
+/** @} */
+
+
+/** @name Internal Functions */
+/** @{ */
+dwc_otg_qh_t *dwc_urb_to_qh(struct urb *urb);
+void dwc_otg_hcd_dump_frrem(dwc_otg_hcd_t *hcd);
+void dwc_otg_hcd_dump_state(dwc_otg_hcd_t *hcd);
+/** @} */
+
+/** Gets the usb_host_endpoint associated with an URB. */
+static inline struct usb_host_endpoint *dwc_urb_to_endpoint(struct urb *urb)
+{
+ struct usb_device *dev = urb->dev;
+ int ep_num = usb_pipeendpoint(urb->pipe);
+
+ if (usb_pipein(urb->pipe))
+ return dev->ep_in[ep_num];
+ else
+ return dev->ep_out[ep_num];
+}
+
+/**
+ * Gets the endpoint number from a _bEndpointAddress argument. The endpoint is
+ * qualified with its direction (possible 32 endpoints per device).
+ */
+#define dwc_ep_addr_to_endpoint(_bEndpointAddress_) ((_bEndpointAddress_ & USB_ENDPOINT_NUMBER_MASK) | \
+ ((_bEndpointAddress_ & USB_DIR_IN) != 0) << 4)
+
+/** Gets the QH that contains the list_head */
+#define dwc_list_to_qh(_list_head_ptr_) container_of(_list_head_ptr_, dwc_otg_qh_t, qh_list_entry)
+
+/** Gets the QTD that contains the list_head */
+#define dwc_list_to_qtd(_list_head_ptr_) container_of(_list_head_ptr_, dwc_otg_qtd_t, qtd_list_entry)
+
+/** Check if QH is non-periodic */
+#define dwc_qh_is_non_per(_qh_ptr_) ((_qh_ptr_->ep_type == USB_ENDPOINT_XFER_BULK) || \
+ (_qh_ptr_->ep_type == USB_ENDPOINT_XFER_CONTROL))
+
+/** High bandwidth multiplier as encoded in highspeed endpoint descriptors */
+#define dwc_hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03))
+
+/** Packet size for any kind of endpoint descriptor */
+#define dwc_max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
+
+/**
+ * Returns true if _frame1 is less than or equal to _frame2. The comparison is
+ * done modulo DWC_HFNUM_MAX_FRNUM. This accounts for the rollover of the
+ * frame number when the max frame number is reached.
+ */
+static inline int dwc_frame_num_le(uint16_t frame1, uint16_t frame2)
+{
+ return ((frame2 - frame1) & DWC_HFNUM_MAX_FRNUM) <=
+ (DWC_HFNUM_MAX_FRNUM >> 1);
+}
+
+/**
+ * Returns true if _frame1 is greater than _frame2. The comparison is done
+ * modulo DWC_HFNUM_MAX_FRNUM. This accounts for the rollover of the frame
+ * number when the max frame number is reached.
+ */
+static inline int dwc_frame_num_gt(uint16_t frame1, uint16_t frame2)
+{
+ return (frame1 != frame2) &&
+ (((frame1 - frame2) & DWC_HFNUM_MAX_FRNUM) <
+ (DWC_HFNUM_MAX_FRNUM >> 1));
+}
+
+/**
+ * Increments _frame by the amount specified by _inc. The addition is done
+ * modulo DWC_HFNUM_MAX_FRNUM. Returns the incremented value.
+ */
+static inline uint16_t dwc_frame_num_inc(uint16_t frame, uint16_t inc)
+{
+ return (frame + inc) & DWC_HFNUM_MAX_FRNUM;
+}
+
+static inline uint16_t dwc_full_frame_num(uint16_t frame)
+{
+ return (frame & DWC_HFNUM_MAX_FRNUM) >> 3;
+}
+
+static inline uint16_t dwc_micro_frame_num(uint16_t frame)
+{
+ return frame & 0x7;
+}
+
+#ifdef DEBUG
+/**
+ * Macro to sample the remaining PHY clocks left in the current frame. This
+ * may be used during debugging to determine the average time it takes to
+ * execute sections of code. There are two possible sample points, "a" and
+ * "b", so the _letter argument must be one of these values.
+ *
+ * To dump the average sample times, read the "hcd_frrem" sysfs attribute. For
+ * example, "cat /sys/devices/lm0/hcd_frrem".
+ */
+#define dwc_sample_frrem(_hcd, _qh, _letter) \
+{ \
+ hfnum_data_t hfnum; \
+ dwc_otg_qtd_t *qtd; \
+ qtd = list_entry(_qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry); \
+ if (usb_pipeint(qtd->urb->pipe) && _qh->start_split_frame != 0 && !qtd->complete_split) { \
+ hfnum.d32 = dwc_read_reg32(&_hcd->core_if->host_if->host_global_regs->hfnum); \
+ switch (hfnum.b.frnum & 0x7) { \
+ case 7: \
+ _hcd->hfnum_7_samples_##_letter++; \
+ _hcd->hfnum_7_frrem_accum_##_letter += hfnum.b.frrem; \
+ break; \
+ case 0: \
+ _hcd->hfnum_0_samples_##_letter++; \
+ _hcd->hfnum_0_frrem_accum_##_letter += hfnum.b.frrem; \
+ break; \
+ default: \
+ _hcd->hfnum_other_samples_##_letter++; \
+ _hcd->hfnum_other_frrem_accum_##_letter += hfnum.b.frrem; \
+ break; \
+ } \
+ } \
+}
+#else
+#define dwc_sample_frrem(_hcd, _qh, _letter)
+#endif
+#endif
+#endif /* DWC_DEVICE_ONLY */
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_intr.c $
+ * $Revision: 1.6.2.1 $
+ * $Date: 2009-04-22 03:48:22 $
+ * $Change: 1117667 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+#include <linux/version.h>
+
+#include "dwc_otg_driver.h"
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+
+/** @file
+ * This file contains the implementation of the HCD Interrupt handlers.
+ */
+
+/** This function handles interrupts for the HCD. */
+int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t *dwc_otg_hcd)
+{
+ int retval = 0;
+
+ dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
+ gintsts_data_t gintsts;
+#ifdef DEBUG
+ dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+#endif
+
+ /* Check if HOST Mode */
+ if (dwc_otg_is_host_mode(core_if)) {
+ gintsts.d32 = dwc_otg_read_core_intr(core_if);
+ if (!gintsts.d32) {
+ return 0;
+ }
+
+#ifdef DEBUG
+ /* Don't print debug message in the interrupt handler on SOF */
+# ifndef DEBUG_SOF
+ if (gintsts.d32 != DWC_SOF_INTR_MASK)
+# endif
+ DWC_DEBUGPL(DBG_HCD, "\n");
+#endif
+
+#ifdef DEBUG
+# ifndef DEBUG_SOF
+ if (gintsts.d32 != DWC_SOF_INTR_MASK)
+# endif
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Interrupt Detected gintsts&gintmsk=0x%08x\n", gintsts.d32);
+#endif
+ if (gintsts.b.usbreset) {
+ DWC_PRINT("Usb Reset In Host Mode\n");
+ }
+
+
+ if (gintsts.b.sofintr) {
+ retval |= dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd);
+ }
+ if (gintsts.b.rxstsqlvl) {
+ retval |= dwc_otg_hcd_handle_rx_status_q_level_intr(dwc_otg_hcd);
+ }
+ if (gintsts.b.nptxfempty) {
+ retval |= dwc_otg_hcd_handle_np_tx_fifo_empty_intr(dwc_otg_hcd);
+ }
+ if (gintsts.b.i2cintr) {
+ /** @todo Implement i2cintr handler. */
+ }
+ if (gintsts.b.portintr) {
+ retval |= dwc_otg_hcd_handle_port_intr(dwc_otg_hcd);
+ }
+ if (gintsts.b.hcintr) {
+ retval |= dwc_otg_hcd_handle_hc_intr(dwc_otg_hcd);
+ }
+ if (gintsts.b.ptxfempty) {
+ retval |= dwc_otg_hcd_handle_perio_tx_fifo_empty_intr(dwc_otg_hcd);
+ }
+#ifdef DEBUG
+# ifndef DEBUG_SOF
+ if (gintsts.d32 != DWC_SOF_INTR_MASK)
+# endif
+ {
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Finished Servicing Interrupts\n");
+ DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD gintsts=0x%08x\n",
+ dwc_read_reg32(&global_regs->gintsts));
+ DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD gintmsk=0x%08x\n",
+ dwc_read_reg32(&global_regs->gintmsk));
+ }
+#endif
+
+#ifdef DEBUG
+# ifndef DEBUG_SOF
+ if (gintsts.d32 != DWC_SOF_INTR_MASK)
+# endif
+ DWC_DEBUGPL(DBG_HCD, "\n");
+#endif
+
+ }
+
+ S3C2410X_CLEAR_EINTPEND();
+
+ return retval;
+}
+
+#ifdef DWC_TRACK_MISSED_SOFS
+#warning Compiling code to track missed SOFs
+#define FRAME_NUM_ARRAY_SIZE 1000
+/**
+ * This function is for debug only.
+ */
+static inline void track_missed_sofs(uint16_t curr_frame_number)
+{
+ static uint16_t frame_num_array[FRAME_NUM_ARRAY_SIZE];
+ static uint16_t last_frame_num_array[FRAME_NUM_ARRAY_SIZE];
+ static int frame_num_idx = 0;
+ static uint16_t last_frame_num = DWC_HFNUM_MAX_FRNUM;
+ static int dumped_frame_num_array = 0;
+
+ if (frame_num_idx < FRAME_NUM_ARRAY_SIZE) {
+ if (((last_frame_num + 1) & DWC_HFNUM_MAX_FRNUM) != curr_frame_number) {
+ frame_num_array[frame_num_idx] = curr_frame_number;
+ last_frame_num_array[frame_num_idx++] = last_frame_num;
+ }
+ } else if (!dumped_frame_num_array) {
+ int i;
+ printk(KERN_EMERG USB_DWC "Frame Last Frame\n");
+ printk(KERN_EMERG USB_DWC "----- ----------\n");
+ for (i = 0; i < FRAME_NUM_ARRAY_SIZE; i++) {
+ printk(KERN_EMERG USB_DWC "0x%04x 0x%04x\n",
+ frame_num_array[i], last_frame_num_array[i]);
+ }
+ dumped_frame_num_array = 1;
+ }
+ last_frame_num = curr_frame_number;
+}
+#endif
+
+/**
+ * Handles the start-of-frame interrupt in host mode. Non-periodic
+ * transactions may be queued to the DWC_otg controller for the current
+ * (micro)frame. Periodic transactions may be queued to the controller for the
+ * next (micro)frame.
+ */
+int32_t dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd_t *hcd)
+{
+ hfnum_data_t hfnum;
+ struct list_head *qh_entry;
+ dwc_otg_qh_t *qh;
+ dwc_otg_transaction_type_e tr_type;
+ gintsts_data_t gintsts = {.d32 = 0};
+
+ hfnum.d32 = dwc_read_reg32(&hcd->core_if->host_if->host_global_regs->hfnum);
+
+#ifdef DEBUG_SOF
+ DWC_DEBUGPL(DBG_HCD, "--Start of Frame Interrupt--\n");
+#endif
+ hcd->frame_number = hfnum.b.frnum;
+
+#ifdef DEBUG
+ hcd->frrem_accum += hfnum.b.frrem;
+ hcd->frrem_samples++;
+#endif
+
+#ifdef DWC_TRACK_MISSED_SOFS
+ track_missed_sofs(hcd->frame_number);
+#endif
+
+ /* Determine whether any periodic QHs should be executed. */
+ qh_entry = hcd->periodic_sched_inactive.next;
+ while (qh_entry != &hcd->periodic_sched_inactive) {
+ qh = list_entry(qh_entry, dwc_otg_qh_t, qh_list_entry);
+ qh_entry = qh_entry->next;
+ if (dwc_frame_num_le(qh->sched_frame, hcd->frame_number)) {
+ /*
+ * Move QH to the ready list to be executed next
+ * (micro)frame.
+ */
+ list_move(&qh->qh_list_entry, &hcd->periodic_sched_ready);
+ }
+ }
+
+ tr_type = dwc_otg_hcd_select_transactions(hcd);
+ if (tr_type != DWC_OTG_TRANSACTION_NONE) {
+ dwc_otg_hcd_queue_transactions(hcd, tr_type);
+ }
+
+ /* Clear interrupt */
+ gintsts.b.sofintr = 1;
+ dwc_write_reg32(&hcd->core_if->core_global_regs->gintsts, gintsts.d32);
+
+ return 1;
+}
+
+/** Handles the Rx Status Queue Level Interrupt, which indicates that there is at
+ * least one packet in the Rx FIFO. The packets are moved from the FIFO to
+ * memory if the DWC_otg controller is operating in Slave mode. */
+int32_t dwc_otg_hcd_handle_rx_status_q_level_intr(dwc_otg_hcd_t *dwc_otg_hcd)
+{
+ host_grxsts_data_t grxsts;
+ dwc_hc_t *hc = NULL;
+
+ DWC_DEBUGPL(DBG_HCD, "--RxStsQ Level Interrupt--\n");
+
+ grxsts.d32 = dwc_read_reg32(&dwc_otg_hcd->core_if->core_global_regs->grxstsp);
+
+ hc = dwc_otg_hcd->hc_ptr_array[grxsts.b.chnum];
+
+ /* Packet Status */
+ DWC_DEBUGPL(DBG_HCDV, " Ch num = %d\n", grxsts.b.chnum);
+ DWC_DEBUGPL(DBG_HCDV, " Count = %d\n", grxsts.b.bcnt);
+ DWC_DEBUGPL(DBG_HCDV, " DPID = %d, hc.dpid = %d\n", grxsts.b.dpid, hc->data_pid_start);
+ DWC_DEBUGPL(DBG_HCDV, " PStatus = %d\n", grxsts.b.pktsts);
+
+ switch (grxsts.b.pktsts) {
+ case DWC_GRXSTS_PKTSTS_IN:
+ /* Read the data into the host buffer. */
+ if (grxsts.b.bcnt > 0) {
+ dwc_otg_read_packet(dwc_otg_hcd->core_if,
+ hc->xfer_buff,
+ grxsts.b.bcnt);
+
+ /* Update the HC fields for the next packet received. */
+ hc->xfer_count += grxsts.b.bcnt;
+ hc->xfer_buff += grxsts.b.bcnt;
+ }
+
+ case DWC_GRXSTS_PKTSTS_IN_XFER_COMP:
+ case DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR:
+ case DWC_GRXSTS_PKTSTS_CH_HALTED:
+ /* Handled in interrupt, just ignore data */
+ break;
+ default:
+ DWC_ERROR("RX_STS_Q Interrupt: Unknown status %d\n", grxsts.b.pktsts);
+ break;
+ }
+
+ return 1;
+}
+
+/** This interrupt occurs when the non-periodic Tx FIFO is half-empty. More
+ * data packets may be written to the FIFO for OUT transfers. More requests
+ * may be written to the non-periodic request queue for IN transfers. This
+ * interrupt is enabled only in Slave mode. */
+int32_t dwc_otg_hcd_handle_np_tx_fifo_empty_intr(dwc_otg_hcd_t *dwc_otg_hcd)
+{
+ DWC_DEBUGPL(DBG_HCD, "--Non-Periodic TxFIFO Empty Interrupt--\n");
+ dwc_otg_hcd_queue_transactions(dwc_otg_hcd,
+ DWC_OTG_TRANSACTION_NON_PERIODIC);
+ return 1;
+}
+
+/** This interrupt occurs when the periodic Tx FIFO is half-empty. More data
+ * packets may be written to the FIFO for OUT transfers. More requests may be
+ * written to the periodic request queue for IN transfers. This interrupt is
+ * enabled only in Slave mode. */
+int32_t dwc_otg_hcd_handle_perio_tx_fifo_empty_intr(dwc_otg_hcd_t *dwc_otg_hcd)
+{
+ DWC_DEBUGPL(DBG_HCD, "--Periodic TxFIFO Empty Interrupt--\n");
+ dwc_otg_hcd_queue_transactions(dwc_otg_hcd,
+ DWC_OTG_TRANSACTION_PERIODIC);
+ return 1;
+}
+
+/** There are multiple conditions that can cause a port interrupt. This function
+ * determines which interrupt conditions have occurred and handles them
+ * appropriately. */
+int32_t dwc_otg_hcd_handle_port_intr(dwc_otg_hcd_t *dwc_otg_hcd)
+{
+ int retval = 0;
+ hprt0_data_t hprt0;
+ hprt0_data_t hprt0_modify;
+
+ hprt0.d32 = dwc_read_reg32(dwc_otg_hcd->core_if->host_if->hprt0);
+ hprt0_modify.d32 = dwc_read_reg32(dwc_otg_hcd->core_if->host_if->hprt0);
+
+ /* Clear appropriate bits in HPRT0 to clear the interrupt bit in
+ * GINTSTS */
+
+ hprt0_modify.b.prtena = 0;
+ hprt0_modify.b.prtconndet = 0;
+ hprt0_modify.b.prtenchng = 0;
+ hprt0_modify.b.prtovrcurrchng = 0;
+
+ /* Port Connect Detected
+ * Set flag and clear if detected */
+ if (hprt0.b.prtconndet) {
+ DWC_DEBUGPL(DBG_HCD, "--Port Interrupt HPRT0=0x%08x "
+ "Port Connect Detected--\n", hprt0.d32);
+ dwc_otg_hcd->flags.b.port_connect_status_change = 1;
+ dwc_otg_hcd->flags.b.port_connect_status = 1;
+ hprt0_modify.b.prtconndet = 1;
+
+ /* B-Device has connected, Delete the connection timer. */
+ del_timer( &dwc_otg_hcd->conn_timer );
+
+ /* The Hub driver asserts a reset when it sees port connect
+ * status change flag */
+ retval |= 1;
+ }
+
+ /* Port Enable Changed
+ * Clear if detected - Set internal flag if disabled */
+ if (hprt0.b.prtenchng) {
+ DWC_DEBUGPL(DBG_HCD, " --Port Interrupt HPRT0=0x%08x "
+ "Port Enable Changed--\n", hprt0.d32);
+ hprt0_modify.b.prtenchng = 1;
+ if (hprt0.b.prtena == 1) {
+ int do_reset = 0;
+ dwc_otg_core_params_t *params = dwc_otg_hcd->core_if->core_params;
+ dwc_otg_core_global_regs_t *global_regs = dwc_otg_hcd->core_if->core_global_regs;
+ dwc_otg_host_if_t *host_if = dwc_otg_hcd->core_if->host_if;
+
+ /* Check if we need to adjust the PHY clock speed for
+ * low power and adjust it */
+ if (params->host_support_fs_ls_low_power) {
+ gusbcfg_data_t usbcfg;
+
+ usbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg);
+
+ if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED ||
+ hprt0.b.prtspd == DWC_HPRT0_PRTSPD_FULL_SPEED) {
+ /*
+ * Low power
+ */
+ hcfg_data_t hcfg;
+ if (usbcfg.b.phylpwrclksel == 0) {
+ /* Set PHY low power clock select for FS/LS devices */
+ usbcfg.b.phylpwrclksel = 1;
+ dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32);
+ do_reset = 1;
+ }
+
+ hcfg.d32 = dwc_read_reg32(&host_if->host_global_regs->hcfg);
+
+ if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED &&
+ params->host_ls_low_power_phy_clk ==
+ DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ) {
+ /* 6 MHZ */
+ DWC_DEBUGPL(DBG_CIL, "FS_PHY programming HCFG to 6 MHz (Low Power)\n");
+ if (hcfg.b.fslspclksel != DWC_HCFG_6_MHZ) {
+ hcfg.b.fslspclksel = DWC_HCFG_6_MHZ;
+ dwc_write_reg32(&host_if->host_global_regs->hcfg,
+ hcfg.d32);
+ do_reset = 1;
+ }
+ } else {
+ /* 48 MHZ */
+ DWC_DEBUGPL(DBG_CIL, "FS_PHY programming HCFG to 48 MHz ()\n");
+ if (hcfg.b.fslspclksel != DWC_HCFG_48_MHZ) {
+ hcfg.b.fslspclksel = DWC_HCFG_48_MHZ;
+ dwc_write_reg32(&host_if->host_global_regs->hcfg,
+ hcfg.d32);
+ do_reset = 1;
+ }
+ }
+ } else {
+ /*
+ * Not low power
+ */
+ if (usbcfg.b.phylpwrclksel == 1) {
+ usbcfg.b.phylpwrclksel = 0;
+ dwc_write_reg32(&global_regs->gusbcfg, usbcfg.d32);
+ do_reset = 1;
+ }
+ }
+
+ if (do_reset) {
+ tasklet_schedule(dwc_otg_hcd->reset_tasklet);
+ }
+ }
+
+ if (!do_reset) {
+ /* Port has been enabled set the reset change flag */
+ dwc_otg_hcd->flags.b.port_reset_change = 1;
+ }
+ } else {
+ dwc_otg_hcd->flags.b.port_enable_change = 1;
+ }
+ retval |= 1;
+ }
+
+ /** Overcurrent Change Interrupt */
+ if (hprt0.b.prtovrcurrchng) {
+ DWC_DEBUGPL(DBG_HCD, " --Port Interrupt HPRT0=0x%08x "
+ "Port Overcurrent Changed--\n", hprt0.d32);
+ dwc_otg_hcd->flags.b.port_over_current_change = 1;
+ hprt0_modify.b.prtovrcurrchng = 1;
+ retval |= 1;
+ }
+
+ /* Clear Port Interrupts */
+ dwc_write_reg32(dwc_otg_hcd->core_if->host_if->hprt0, hprt0_modify.d32);
+
+ return retval;
+}
+
+/** This interrupt indicates that one or more host channels has a pending
+ * interrupt. There are multiple conditions that can cause each host channel
+ * interrupt. This function determines which conditions have occurred for each
+ * host channel interrupt and handles them appropriately. */
+int32_t dwc_otg_hcd_handle_hc_intr(dwc_otg_hcd_t *dwc_otg_hcd)
+{
+ int i;
+ int retval = 0;
+ haint_data_t haint;
+
+ /* Clear appropriate bits in HCINTn to clear the interrupt bit in
+ * GINTSTS */
+
+ haint.d32 = dwc_otg_read_host_all_channels_intr(dwc_otg_hcd->core_if);
+
+ for (i = 0; i < dwc_otg_hcd->core_if->core_params->host_channels; i++) {
+ if (haint.b2.chint & (1 << i)) {
+ retval |= dwc_otg_hcd_handle_hc_n_intr(dwc_otg_hcd, i);
+ }
+ }
+
+ return retval;
+}
+
+/* Macro used to clear one channel interrupt */
+#define clear_hc_int(_hc_regs_, _intr_) \
+do { \
+ hcint_data_t hcint_clear = {.d32 = 0}; \
+ hcint_clear.b._intr_ = 1; \
+ dwc_write_reg32(&(_hc_regs_)->hcint, hcint_clear.d32); \
+} while (0)
+
+/*
+ * Macro used to disable one channel interrupt. Channel interrupts are
+ * disabled when the channel is halted or released by the interrupt handler.
+ * There is no need to handle further interrupts of that type until the
+ * channel is re-assigned. In fact, subsequent handling may cause crashes
+ * because the channel structures are cleaned up when the channel is released.
+ */
+#define disable_hc_int(_hc_regs_, _intr_) \
+do { \
+ hcintmsk_data_t hcintmsk = {.d32 = 0}; \
+ hcintmsk.b._intr_ = 1; \
+ dwc_modify_reg32(&(_hc_regs_)->hcintmsk, hcintmsk.d32, 0); \
+} while (0)
+
+/**
+ * Gets the actual length of a transfer after the transfer halts. _halt_status
+ * holds the reason for the halt.
+ *
+ * For IN transfers where halt_status is DWC_OTG_HC_XFER_COMPLETE,
+ * *short_read is set to 1 upon return if less than the requested
+ * number of bytes were transferred. Otherwise, *short_read is set to 0 upon
+ * return. short_read may also be NULL on entry, in which case it remains
+ * unchanged.
+ */
+static uint32_t get_actual_xfer_length(dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd,
+ dwc_otg_halt_status_e halt_status,
+ int *short_read)
+{
+ hctsiz_data_t hctsiz;
+ uint32_t length;
+
+ if (short_read != NULL) {
+ *short_read = 0;
+ }
+ hctsiz.d32 = dwc_read_reg32(&hc_regs->hctsiz);
+
+ if (halt_status == DWC_OTG_HC_XFER_COMPLETE) {
+ if (hc->ep_is_in) {
+ length = hc->xfer_len - hctsiz.b.xfersize;
+ if (short_read != NULL) {
+ *short_read = (hctsiz.b.xfersize != 0);
+ }
+ } else if (hc->qh->do_split) {
+ length = qtd->ssplit_out_xfer_count;
+ } else {
+ length = hc->xfer_len;
+ }
+ } else {
+ /*
+ * Must use the hctsiz.pktcnt field to determine how much data
+ * has been transferred. This field reflects the number of
+ * packets that have been transferred via the USB. This is
+ * always an integral number of packets if the transfer was
+ * halted before its normal completion. (Can't use the
+ * hctsiz.xfersize field because that reflects the number of
+ * bytes transferred via the AHB, not the USB).
+ */
+ length = (hc->start_pkt_count - hctsiz.b.pktcnt) * hc->max_packet;
+ }
+
+ return length;
+}
+
+/**
+ * Updates the state of the URB after a Transfer Complete interrupt on the
+ * host channel. Updates the actual_length field of the URB based on the
+ * number of bytes transferred via the host channel. Sets the URB status
+ * if the data transfer is finished.
+ *
+ * @return 1 if the data transfer specified by the URB is completely finished,
+ * 0 otherwise.
+ */
+static int update_urb_state_xfer_comp(dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ struct urb *urb,
+ dwc_otg_qtd_t *qtd)
+{
+ int xfer_done = 0;
+ int short_read = 0;
+ int overflow_read=0;
+ uint32_t len = 0;
+ int max_packet;
+
+ len = get_actual_xfer_length(hc, hc_regs, qtd,
+ DWC_OTG_HC_XFER_COMPLETE,
+ &short_read);
+
+ /* Data overflow case: by Steven */
+ if (len > urb->transfer_buffer_length) {
+ len = urb->transfer_buffer_length;
+ overflow_read = 1;
+ }
+
+ /* non DWORD-aligned buffer case handling. */
+ if (((uint32_t)hc->xfer_buff & 0x3) && len && hc->qh->dw_align_buf && hc->ep_is_in) {
+ memcpy(urb->transfer_buffer + urb->actual_length, hc->qh->dw_align_buf, len);
+ }
+ urb->actual_length +=len;
+
+ max_packet = usb_maxpacket(urb->dev, urb->pipe, !usb_pipein(urb->pipe));
+ if((len) && usb_pipebulk(urb->pipe) &&
+ (urb->transfer_flags & URB_ZERO_PACKET) &&
+ (urb->actual_length == urb->transfer_buffer_length) &&
+ (!(urb->transfer_buffer_length % max_packet))) {
+ } else if (short_read || urb->actual_length == urb->transfer_buffer_length) {
+ xfer_done = 1;
+ if (short_read && (urb->transfer_flags & URB_SHORT_NOT_OK)) {
+ urb->status = -EREMOTEIO;
+ } else if (overflow_read) {
+ urb->status = -EOVERFLOW;
+ } else {
+ urb->status = 0;
+ }
+ }
+
+#ifdef DEBUG
+ {
+ hctsiz_data_t hctsiz;
+ hctsiz.d32 = dwc_read_reg32(&hc_regs->hctsiz);
+ DWC_DEBUGPL(DBG_HCDV, "DWC_otg: %s: %s, channel %d\n",
+ __func__, (hc->ep_is_in ? "IN" : "OUT"), hc->hc_num);
+ DWC_DEBUGPL(DBG_HCDV, " hc->xfer_len %d\n", hc->xfer_len);
+ DWC_DEBUGPL(DBG_HCDV, " hctsiz.xfersize %d\n", hctsiz.b.xfersize);
+ DWC_DEBUGPL(DBG_HCDV, " urb->transfer_buffer_length %d\n",
+ urb->transfer_buffer_length);
+ DWC_DEBUGPL(DBG_HCDV, " urb->actual_length %d\n", urb->actual_length);
+ DWC_DEBUGPL(DBG_HCDV, " short_read %d, xfer_done %d\n",
+ short_read, xfer_done);
+ }
+#endif
+
+ return xfer_done;
+}
+
+/*
+ * Save the starting data toggle for the next transfer. The data toggle is
+ * saved in the QH for non-control transfers and it's saved in the QTD for
+ * control transfers.
+ */
+static void save_data_toggle(dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ hctsiz_data_t hctsiz;
+ hctsiz.d32 = dwc_read_reg32(&hc_regs->hctsiz);
+
+ if (hc->ep_type != DWC_OTG_EP_TYPE_CONTROL) {
+ dwc_otg_qh_t *qh = hc->qh;
+ if (hctsiz.b.pid == DWC_HCTSIZ_DATA0) {
+ qh->data_toggle = DWC_OTG_HC_PID_DATA0;
+ } else {
+ qh->data_toggle = DWC_OTG_HC_PID_DATA1;
+ }
+ } else {
+ if (hctsiz.b.pid == DWC_HCTSIZ_DATA0) {
+ qtd->data_toggle = DWC_OTG_HC_PID_DATA0;
+ } else {
+ qtd->data_toggle = DWC_OTG_HC_PID_DATA1;
+ }
+ }
+}
+
+/**
+ * Frees the first QTD in the QH's list if free_qtd is 1. For non-periodic
+ * QHs, removes the QH from the active non-periodic schedule. If any QTDs are
+ * still linked to the QH, the QH is added to the end of the inactive
+ * non-periodic schedule. For periodic QHs, removes the QH from the periodic
+ * schedule if no more QTDs are linked to the QH.
+ */
+static void deactivate_qh(dwc_otg_hcd_t *hcd,
+ dwc_otg_qh_t *qh,
+ int free_qtd)
+{
+ int continue_split = 0;
+ dwc_otg_qtd_t *qtd;
+
+ DWC_DEBUGPL(DBG_HCDV, " %s(%p,%p,%d)\n", __func__, hcd, qh, free_qtd);
+
+ qtd = list_entry(qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry);
+
+ if (qtd->complete_split) {
+ continue_split = 1;
+ } else if (qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_MID ||
+ qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_END) {
+ continue_split = 1;
+ }
+
+ if (free_qtd) {
+ dwc_otg_hcd_qtd_remove_and_free(hcd, qtd);
+ continue_split = 0;
+ }
+
+ qh->channel = NULL;
+ qh->qtd_in_process = NULL;
+ dwc_otg_hcd_qh_deactivate(hcd, qh, continue_split);
+}
+
+/**
+ * Updates the state of an Isochronous URB when the transfer is stopped for
+ * any reason. The fields of the current entry in the frame descriptor array
+ * are set based on the transfer state and the input _halt_status. Completes
+ * the Isochronous URB if all the URB frames have been completed.
+ *
+ * @return DWC_OTG_HC_XFER_COMPLETE if there are more frames remaining to be
+ * transferred in the URB. Otherwise return DWC_OTG_HC_XFER_URB_COMPLETE.
+ */
+static dwc_otg_halt_status_e
+update_isoc_urb_state(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd,
+ dwc_otg_halt_status_e halt_status)
+{
+ struct urb *urb = qtd->urb;
+ dwc_otg_halt_status_e ret_val = halt_status;
+ struct usb_iso_packet_descriptor *frame_desc;
+
+ frame_desc = &urb->iso_frame_desc[qtd->isoc_frame_index];
+ switch (halt_status) {
+ case DWC_OTG_HC_XFER_COMPLETE:
+ frame_desc->status = 0;
+ frame_desc->actual_length =
+ get_actual_xfer_length(hc, hc_regs, qtd,
+ halt_status, NULL);
+
+ /* non DWORD-aligned buffer case handling. */
+ if (frame_desc->actual_length && ((uint32_t)hc->xfer_buff & 0x3) &&
+ hc->qh->dw_align_buf && hc->ep_is_in) {
+ memcpy(urb->transfer_buffer + frame_desc->offset + qtd->isoc_split_offset,
+ hc->qh->dw_align_buf, frame_desc->actual_length);
+
+ }
+
+ break;
+ case DWC_OTG_HC_XFER_FRAME_OVERRUN:
+ printk("DWC_OTG_HC_XFER_FRAME_OVERRUN: %d\n", halt_status);
+ urb->error_count++;
+ if (hc->ep_is_in) {
+ frame_desc->status = -ENOSR;
+ } else {
+ frame_desc->status = -ECOMM;
+ }
+ frame_desc->actual_length = 0;
+ break;
+ case DWC_OTG_HC_XFER_BABBLE_ERR:
+ printk("DWC_OTG_HC_XFER_BABBLE_ERR: %d\n", halt_status);
+ urb->error_count++;
+ frame_desc->status = -EOVERFLOW;
+ /* Don't need to update actual_length in this case. */
+ break;
+ case DWC_OTG_HC_XFER_XACT_ERR:
+ printk("DWC_OTG_HC_XFER_XACT_ERR: %d\n", halt_status);
+ urb->error_count++;
+ frame_desc->status = -EPROTO;
+ frame_desc->actual_length =
+ get_actual_xfer_length(hc, hc_regs, qtd,
+ halt_status, NULL);
+
+ /* non DWORD-aligned buffer case handling. */
+ if (frame_desc->actual_length && ((uint32_t)hc->xfer_buff & 0x3) &&
+ hc->qh->dw_align_buf && hc->ep_is_in) {
+ memcpy(urb->transfer_buffer + frame_desc->offset + qtd->isoc_split_offset,
+ hc->qh->dw_align_buf, frame_desc->actual_length);
+
+ }
+ break;
+ default:
+
+ DWC_ERROR("%s: Unhandled _halt_status (%d)\n", __func__,
+ halt_status);
+ BUG();
+ break;
+ }
+
+ if (++qtd->isoc_frame_index == urb->number_of_packets) {
+ /*
+ * urb->status is not used for isoc transfers.
+ * The individual frame_desc statuses are used instead.
+ */
+ dwc_otg_hcd_complete_urb(hcd, urb, 0);
+ ret_val = DWC_OTG_HC_XFER_URB_COMPLETE;
+ } else {
+ ret_val = DWC_OTG_HC_XFER_COMPLETE;
+ }
+
+ return ret_val;
+}
+
+/**
+ * Releases a host channel for use by other transfers. Attempts to select and
+ * queue more transactions since at least one host channel is available.
+ *
+ * @param hcd The HCD state structure.
+ * @param hc The host channel to release.
+ * @param qtd The QTD associated with the host channel. This QTD may be freed
+ * if the transfer is complete or an error has occurred.
+ * @param halt_status Reason the channel is being released. This status
+ * determines the actions taken by this function.
+ */
+static void release_channel(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_qtd_t *qtd,
+ dwc_otg_halt_status_e halt_status)
+{
+ dwc_otg_transaction_type_e tr_type;
+ int free_qtd;
+
+ DWC_DEBUGPL(DBG_HCDV, " %s: channel %d, halt_status %d\n",
+ __func__, hc->hc_num, halt_status);
+
+ switch (halt_status) {
+ case DWC_OTG_HC_XFER_URB_COMPLETE:
+ free_qtd = 1;
+ break;
+ case DWC_OTG_HC_XFER_AHB_ERR:
+ case DWC_OTG_HC_XFER_STALL:
+ case DWC_OTG_HC_XFER_BABBLE_ERR:
+ free_qtd = 1;
+ break;
+ case DWC_OTG_HC_XFER_XACT_ERR:
+ if (qtd->error_count >= 3) {
+ DWC_DEBUGPL(DBG_HCDV, " Complete URB with transaction error\n");
+ free_qtd = 1;
+ qtd->urb->status = -EPROTO;
+ dwc_otg_hcd_complete_urb(hcd, qtd->urb, -EPROTO);
+ } else {
+ free_qtd = 0;
+ }
+ break;
+ case DWC_OTG_HC_XFER_URB_DEQUEUE:
+ /*
+ * The QTD has already been removed and the QH has been
+ * deactivated. Don't want to do anything except release the
+ * host channel and try to queue more transfers.
+ */
+ goto cleanup;
+ case DWC_OTG_HC_XFER_NO_HALT_STATUS:
+ DWC_ERROR("%s: No halt_status, channel %d\n", __func__, hc->hc_num);
+ free_qtd = 0;
+ break;
+ default:
+ free_qtd = 0;
+ break;
+ }
+
+ deactivate_qh(hcd, hc->qh, free_qtd);
+
+ cleanup:
+ /*
+ * Release the host channel for use by other transfers. The cleanup
+ * function clears the channel interrupt enables and conditions, so
+ * there's no need to clear the Channel Halted interrupt separately.
+ */
+ dwc_otg_hc_cleanup(hcd->core_if, hc);
+ list_add_tail(&hc->hc_list_entry, &hcd->free_hc_list);
+
+ switch (hc->ep_type) {
+ case DWC_OTG_EP_TYPE_CONTROL:
+ case DWC_OTG_EP_TYPE_BULK:
+ hcd->non_periodic_channels--;
+ break;
+
+ default:
+ /*
+ * Don't release reservations for periodic channels here.
+ * That's done when a periodic transfer is descheduled (i.e.
+ * when the QH is removed from the periodic schedule).
+ */
+ break;
+ }
+
+ /* Try to queue more transfers now that there's a free channel. */
+ tr_type = dwc_otg_hcd_select_transactions(hcd);
+ if (tr_type != DWC_OTG_TRANSACTION_NONE) {
+ dwc_otg_hcd_queue_transactions(hcd, tr_type);
+ }
+}
+
+/**
+ * Halts a host channel. If the channel cannot be halted immediately because
+ * the request queue is full, this function ensures that the FIFO empty
+ * interrupt for the appropriate queue is enabled so that the halt request can
+ * be queued when there is space in the request queue.
+ *
+ * This function may also be called in DMA mode. In that case, the channel is
+ * simply released since the core always halts the channel automatically in
+ * DMA mode.
+ */
+static void halt_channel(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_qtd_t *qtd,
+ dwc_otg_halt_status_e halt_status)
+{
+ if (hcd->core_if->dma_enable) {
+ release_channel(hcd, hc, qtd, halt_status);
+ return;
+ }
+
+ /* Slave mode processing... */
+ dwc_otg_hc_halt(hcd->core_if, hc, halt_status);
+
+ if (hc->halt_on_queue) {
+ gintmsk_data_t gintmsk = {.d32 = 0};
+ dwc_otg_core_global_regs_t *global_regs;
+ global_regs = hcd->core_if->core_global_regs;
+
+ if (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
+ hc->ep_type == DWC_OTG_EP_TYPE_BULK) {
+ /*
+ * Make sure the Non-periodic Tx FIFO empty interrupt
+ * is enabled so that the non-periodic schedule will
+ * be processed.
+ */
+ gintmsk.b.nptxfempty = 1;
+ dwc_modify_reg32(&global_regs->gintmsk, 0, gintmsk.d32);
+ } else {
+ /*
+ * Move the QH from the periodic queued schedule to
+ * the periodic assigned schedule. This allows the
+ * halt to be queued when the periodic schedule is
+ * processed.
+ */
+ list_move(&hc->qh->qh_list_entry,
+ &hcd->periodic_sched_assigned);
+
+ /*
+ * Make sure the Periodic Tx FIFO Empty interrupt is
+ * enabled so that the periodic schedule will be
+ * processed.
+ */
+ gintmsk.b.ptxfempty = 1;
+ dwc_modify_reg32(&global_regs->gintmsk, 0, gintmsk.d32);
+ }
+ }
+}
+
+/**
+ * Performs common cleanup for non-periodic transfers after a Transfer
+ * Complete interrupt. This function should be called after any endpoint type
+ * specific handling is finished to release the host channel.
+ */
+static void complete_non_periodic_xfer(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd,
+ dwc_otg_halt_status_e halt_status)
+{
+ hcint_data_t hcint;
+
+ qtd->error_count = 0;
+
+ hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+ if (hcint.b.nyet) {
+ /*
+ * Got a NYET on the last transaction of the transfer. This
+ * means that the endpoint should be in the PING state at the
+ * beginning of the next transfer.
+ */
+ hc->qh->ping_state = 1;
+ clear_hc_int(hc_regs, nyet);
+ }
+
+ /*
+ * Always halt and release the host channel to make it available for
+ * more transfers. There may still be more phases for a control
+ * transfer or more data packets for a bulk transfer at this point,
+ * but the host channel is still halted. A channel will be reassigned
+ * to the transfer when the non-periodic schedule is processed after
+ * the channel is released. This allows transactions to be queued
+ * properly via dwc_otg_hcd_queue_transactions, which also enables the
+ * Tx FIFO Empty interrupt if necessary.
+ */
+ if (hc->ep_is_in) {
+ /*
+ * IN transfers in Slave mode require an explicit disable to
+ * halt the channel. (In DMA mode, this call simply releases
+ * the channel.)
+ */
+ halt_channel(hcd, hc, qtd, halt_status);
+ } else {
+ /*
+ * The channel is automatically disabled by the core for OUT
+ * transfers in Slave mode.
+ */
+ release_channel(hcd, hc, qtd, halt_status);
+ }
+}
+
+/**
+ * Performs common cleanup for periodic transfers after a Transfer Complete
+ * interrupt. This function should be called after any endpoint type specific
+ * handling is finished to release the host channel.
+ */
+static void complete_periodic_xfer(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd,
+ dwc_otg_halt_status_e halt_status)
+{
+ hctsiz_data_t hctsiz;
+ qtd->error_count = 0;
+
+ hctsiz.d32 = dwc_read_reg32(&hc_regs->hctsiz);
+ if (!hc->ep_is_in || hctsiz.b.pktcnt == 0) {
+ /* Core halts channel in these cases. */
+ release_channel(hcd, hc, qtd, halt_status);
+ } else {
+ /* Flush any outstanding requests from the Tx queue. */
+ halt_channel(hcd, hc, qtd, halt_status);
+ }
+}
+
+/**
+ * Handles a host channel Transfer Complete interrupt. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_xfercomp_intr(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ int urb_xfer_done;
+ dwc_otg_halt_status_e halt_status = DWC_OTG_HC_XFER_COMPLETE;
+ struct urb *urb = qtd->urb;
+ int pipe_type = usb_pipetype(urb->pipe);
+
+ DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+ "Transfer Complete--\n", hc->hc_num);
+
+ /*
+ * Handle xfer complete on CSPLIT.
+ */
+ if (hc->qh->do_split) {
+ qtd->complete_split = 0;
+ }
+
+ /* Update the QTD and URB states. */
+ switch (pipe_type) {
+ case PIPE_CONTROL:
+ switch (qtd->control_phase) {
+ case DWC_OTG_CONTROL_SETUP:
+ if (urb->transfer_buffer_length > 0) {
+ qtd->control_phase = DWC_OTG_CONTROL_DATA;
+ } else {
+ qtd->control_phase = DWC_OTG_CONTROL_STATUS;
+ }
+ DWC_DEBUGPL(DBG_HCDV, " Control setup transaction done\n");
+ halt_status = DWC_OTG_HC_XFER_COMPLETE;
+ break;
+ case DWC_OTG_CONTROL_DATA: {
+ urb_xfer_done = update_urb_state_xfer_comp(hc, hc_regs, urb, qtd);
+ if (urb_xfer_done) {
+ qtd->control_phase = DWC_OTG_CONTROL_STATUS;
+ DWC_DEBUGPL(DBG_HCDV, " Control data transfer done\n");
+ } else {
+ save_data_toggle(hc, hc_regs, qtd);
+ }
+ halt_status = DWC_OTG_HC_XFER_COMPLETE;
+ break;
+ }
+ case DWC_OTG_CONTROL_STATUS:
+ DWC_DEBUGPL(DBG_HCDV, " Control transfer complete\n");
+ if (urb->status == -EINPROGRESS) {
+ urb->status = 0;
+ }
+ dwc_otg_hcd_complete_urb(hcd, urb, urb->status);
+ halt_status = DWC_OTG_HC_XFER_URB_COMPLETE;
+ break;
+ }
+
+ complete_non_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
+ break;
+ case PIPE_BULK:
+ DWC_DEBUGPL(DBG_HCDV, " Bulk transfer complete\n");
+ urb_xfer_done = update_urb_state_xfer_comp(hc, hc_regs, urb, qtd);
+ if (urb_xfer_done) {
+ dwc_otg_hcd_complete_urb(hcd, urb, urb->status);
+ halt_status = DWC_OTG_HC_XFER_URB_COMPLETE;
+ } else {
+ halt_status = DWC_OTG_HC_XFER_COMPLETE;
+ }
+
+ save_data_toggle(hc, hc_regs, qtd);
+ complete_non_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
+ break;
+ case PIPE_INTERRUPT:
+ DWC_DEBUGPL(DBG_HCDV, " Interrupt transfer complete\n");
+ update_urb_state_xfer_comp(hc, hc_regs, urb, qtd);
+
+ /*
+ * Interrupt URB is done on the first transfer complete
+ * interrupt.
+ */
+ dwc_otg_hcd_complete_urb(hcd, urb, urb->status);
+ save_data_toggle(hc, hc_regs, qtd);
+ complete_periodic_xfer(hcd, hc, hc_regs, qtd,
+ DWC_OTG_HC_XFER_URB_COMPLETE);
+ break;
+ case PIPE_ISOCHRONOUS:
+ DWC_DEBUGPL(DBG_HCDV, " Isochronous transfer complete\n");
+ if (qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_ALL) {
+ halt_status = update_isoc_urb_state(hcd, hc, hc_regs, qtd,
+ DWC_OTG_HC_XFER_COMPLETE);
+ }
+ complete_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
+ break;
+ }
+
+ disable_hc_int(hc_regs, xfercompl);
+
+ return 1;
+}
+
+/**
+ * Handles a host channel STALL interrupt. This handler may be called in
+ * either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_stall_intr(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ struct urb *urb = qtd->urb;
+ int pipe_type = usb_pipetype(urb->pipe);
+
+ DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+ "STALL Received--\n", hc->hc_num);
+
+ if (pipe_type == PIPE_CONTROL) {
+ dwc_otg_hcd_complete_urb(hcd, urb, -EPIPE);
+ }
+
+ if (pipe_type == PIPE_BULK || pipe_type == PIPE_INTERRUPT) {
+ dwc_otg_hcd_complete_urb(hcd, urb, -EPIPE);
+ /*
+ * USB protocol requires resetting the data toggle for bulk
+ * and interrupt endpoints when a CLEAR_FEATURE(ENDPOINT_HALT)
+ * setup command is issued to the endpoint. Anticipate the
+ * CLEAR_FEATURE command since a STALL has occurred and reset
+ * the data toggle now.
+ */
+ hc->qh->data_toggle = 0;
+ }
+
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_STALL);
+
+ disable_hc_int(hc_regs, stall);
+
+ return 1;
+}
+
+/*
+ * Updates the state of the URB when a transfer has been stopped due to an
+ * abnormal condition before the transfer completes. Modifies the
+ * actual_length field of the URB to reflect the number of bytes that have
+ * actually been transferred via the host channel.
+ */
+static void update_urb_state_xfer_intr(dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ struct urb *urb,
+ dwc_otg_qtd_t *qtd,
+ dwc_otg_halt_status_e halt_status)
+{
+ uint32_t bytes_transferred = get_actual_xfer_length(hc, hc_regs, qtd,
+ halt_status, NULL);
+ urb->actual_length += bytes_transferred;
+
+#ifdef DEBUG
+ {
+ hctsiz_data_t hctsiz;
+ hctsiz.d32 = dwc_read_reg32(&hc_regs->hctsiz);
+ DWC_DEBUGPL(DBG_HCDV, "DWC_otg: %s: %s, channel %d\n",
+ __func__, (hc->ep_is_in ? "IN" : "OUT"), hc->hc_num);
+ DWC_DEBUGPL(DBG_HCDV, " hc->start_pkt_count %d\n", hc->start_pkt_count);
+ DWC_DEBUGPL(DBG_HCDV, " hctsiz.pktcnt %d\n", hctsiz.b.pktcnt);
+ DWC_DEBUGPL(DBG_HCDV, " hc->max_packet %d\n", hc->max_packet);
+ DWC_DEBUGPL(DBG_HCDV, " bytes_transferred %d\n", bytes_transferred);
+ DWC_DEBUGPL(DBG_HCDV, " urb->actual_length %d\n", urb->actual_length);
+ DWC_DEBUGPL(DBG_HCDV, " urb->transfer_buffer_length %d\n",
+ urb->transfer_buffer_length);
+ }
+#endif
+}
+
+/**
+ * Handles a host channel NAK interrupt. This handler may be called in either
+ * DMA mode or Slave mode.
+ */
+static int32_t handle_hc_nak_intr(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+ "NAK Received--\n", hc->hc_num);
+
+ /*
+ * Handle NAK for IN/OUT SSPLIT/CSPLIT transfers, bulk, control, and
+ * interrupt. Re-start the SSPLIT transfer.
+ */
+ if (hc->do_split) {
+ if (hc->complete_split) {
+ qtd->error_count = 0;
+ }
+ qtd->complete_split = 0;
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NAK);
+ goto handle_nak_done;
+ }
+
+ switch (usb_pipetype(qtd->urb->pipe)) {
+ case PIPE_CONTROL:
+ case PIPE_BULK:
+ if (hcd->core_if->dma_enable && hc->ep_is_in) {
+ /*
+ * NAK interrupts are enabled on bulk/control IN
+ * transfers in DMA mode for the sole purpose of
+ * resetting the error count after a transaction error
+ * occurs. The core will continue transferring data.
+ */
+ qtd->error_count = 0;
+ goto handle_nak_done;
+ }
+
+ /*
+ * NAK interrupts normally occur during OUT transfers in DMA
+ * or Slave mode. For IN transfers, more requests will be
+ * queued as request queue space is available.
+ */
+ qtd->error_count = 0;
+
+ if (!hc->qh->ping_state) {
+ update_urb_state_xfer_intr(hc, hc_regs, qtd->urb,
+ qtd, DWC_OTG_HC_XFER_NAK);
+ save_data_toggle(hc, hc_regs, qtd);
+ if (qtd->urb->dev->speed == USB_SPEED_HIGH) {
+ hc->qh->ping_state = 1;
+ }
+ }
+
+ /*
+ * Halt the channel so the transfer can be re-started from
+ * the appropriate point or the PING protocol will
+ * start/continue.
+ */
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NAK);
+ break;
+ case PIPE_INTERRUPT:
+ qtd->error_count = 0;
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NAK);
+ break;
+ case PIPE_ISOCHRONOUS:
+ /* Should never get called for isochronous transfers. */
+ BUG();
+ break;
+ }
+
+ handle_nak_done:
+ disable_hc_int(hc_regs, nak);
+
+ return 1;
+}
+
+/**
+ * Handles a host channel ACK interrupt. This interrupt is enabled when
+ * performing the PING protocol in Slave mode, when errors occur during
+ * either Slave mode or DMA mode, and during Start Split transactions.
+ */
+static int32_t handle_hc_ack_intr(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+ "ACK Received--\n", hc->hc_num);
+
+ if (hc->do_split) {
+ /*
+ * Handle ACK on SSPLIT.
+ * ACK should not occur in CSPLIT.
+ */
+ if (!hc->ep_is_in && hc->data_pid_start != DWC_OTG_HC_PID_SETUP) {
+ qtd->ssplit_out_xfer_count = hc->xfer_len;
+ }
+ if (!(hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !hc->ep_is_in)) {
+ /* Don't need complete for isochronous out transfers. */
+ qtd->complete_split = 1;
+ }
+
+ /* ISOC OUT */
+ if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !hc->ep_is_in) {
+ switch (hc->xact_pos) {
+ case DWC_HCSPLIT_XACTPOS_ALL:
+ break;
+ case DWC_HCSPLIT_XACTPOS_END:
+ qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_ALL;
+ qtd->isoc_split_offset = 0;
+ break;
+ case DWC_HCSPLIT_XACTPOS_BEGIN:
+ case DWC_HCSPLIT_XACTPOS_MID:
+ /*
+ * For BEGIN or MID, calculate the length for
+ * the next microframe to determine the correct
+ * SSPLIT token, either MID or END.
+ */
+ {
+ struct usb_iso_packet_descriptor *frame_desc;
+
+ frame_desc = &qtd->urb->iso_frame_desc[qtd->isoc_frame_index];
+ qtd->isoc_split_offset += 188;
+
+ if ((frame_desc->length - qtd->isoc_split_offset) <= 188) {
+ qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_END;
+ } else {
+ qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_MID;
+ }
+
+ }
+ break;
+ }
+ } else {
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_ACK);
+ }
+ } else {
+ qtd->error_count = 0;
+
+ if (hc->qh->ping_state) {
+ hc->qh->ping_state = 0;
+ /*
+ * Halt the channel so the transfer can be re-started
+ * from the appropriate point. This only happens in
+ * Slave mode. In DMA mode, the ping_state is cleared
+ * when the transfer is started because the core
+ * automatically executes the PING, then the transfer.
+ */
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_ACK);
+ }
+ }
+
+ /*
+ * If the ACK occurred when _not_ in the PING state, let the channel
+ * continue transferring data after clearing the error count.
+ */
+
+ disable_hc_int(hc_regs, ack);
+
+ return 1;
+}
+
+/**
+ * Handles a host channel NYET interrupt. This interrupt should only occur on
+ * Bulk and Control OUT endpoints and for complete split transactions. If a
+ * NYET occurs at the same time as a Transfer Complete interrupt, it is
+ * handled in the xfercomp interrupt handler, not here. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_nyet_intr(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+ "NYET Received--\n", hc->hc_num);
+
+ /*
+ * NYET on CSPLIT
+ * re-do the CSPLIT immediately on non-periodic
+ */
+ if (hc->do_split && hc->complete_split) {
+ if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+ hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+ int frnum = dwc_otg_hcd_get_frame_number(dwc_otg_hcd_to_hcd(hcd));
+
+ if (dwc_full_frame_num(frnum) !=
+ dwc_full_frame_num(hc->qh->sched_frame)) {
+ /*
+ * No longer in the same full speed frame.
+ * Treat this as a transaction error.
+ */
+#if 0
+ /** @todo Fix system performance so this can
+ * be treated as an error. Right now complete
+ * splits cannot be scheduled precisely enough
+ * due to other system activity, so this error
+ * occurs regularly in Slave mode.
+ */
+ qtd->error_count++;
+#endif
+ qtd->complete_split = 0;
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
+ /** @todo add support for isoc release */
+ goto handle_nyet_done;
+ }
+ }
+
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NYET);
+ goto handle_nyet_done;
+ }
+
+ hc->qh->ping_state = 1;
+ qtd->error_count = 0;
+
+ update_urb_state_xfer_intr(hc, hc_regs, qtd->urb, qtd,
+ DWC_OTG_HC_XFER_NYET);
+ save_data_toggle(hc, hc_regs, qtd);
+
+ /*
+ * Halt the channel and re-start the transfer so the PING
+ * protocol will start.
+ */
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NYET);
+
+handle_nyet_done:
+ disable_hc_int(hc_regs, nyet);
+ return 1;
+}
+
+/**
+ * Handles a host channel babble interrupt. This handler may be called in
+ * either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_babble_intr(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+ "Babble Error--\n", hc->hc_num);
+ if (hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
+ dwc_otg_hcd_complete_urb(hcd, qtd->urb, -EOVERFLOW);
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_BABBLE_ERR);
+ } else {
+ dwc_otg_halt_status_e halt_status;
+ halt_status = update_isoc_urb_state(hcd, hc, hc_regs, qtd,
+ DWC_OTG_HC_XFER_BABBLE_ERR);
+ halt_channel(hcd, hc, qtd, halt_status);
+ }
+ disable_hc_int(hc_regs, bblerr);
+ return 1;
+}
+
+/**
+ * Handles a host channel AHB error interrupt. This handler is only called in
+ * DMA mode.
+ */
+static int32_t handle_hc_ahberr_intr(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ hcchar_data_t hcchar;
+ hcsplt_data_t hcsplt;
+ hctsiz_data_t hctsiz;
+ uint32_t hcdma;
+ struct urb *urb = qtd->urb;
+
+ DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+ "AHB Error--\n", hc->hc_num);
+
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ hcsplt.d32 = dwc_read_reg32(&hc_regs->hcsplt);
+ hctsiz.d32 = dwc_read_reg32(&hc_regs->hctsiz);
+ hcdma = dwc_read_reg32(&hc_regs->hcdma);
+
+ DWC_ERROR("AHB ERROR, Channel %d\n", hc->hc_num);
+ DWC_ERROR(" hcchar 0x%08x, hcsplt 0x%08x\n", hcchar.d32, hcsplt.d32);
+ DWC_ERROR(" hctsiz 0x%08x, hcdma 0x%08x\n", hctsiz.d32, hcdma);
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Enqueue\n");
+ DWC_ERROR(" Device address: %d\n", usb_pipedevice(urb->pipe));
+ DWC_ERROR(" Endpoint: %d, %s\n", usb_pipeendpoint(urb->pipe),
+ (usb_pipein(urb->pipe) ? "IN" : "OUT"));
+ DWC_ERROR(" Endpoint type: %s\n",
+ ({char *pipetype;
+ switch (usb_pipetype(urb->pipe)) {
+ case PIPE_CONTROL: pipetype = "CONTROL"; break;
+ case PIPE_BULK: pipetype = "BULK"; break;
+ case PIPE_INTERRUPT: pipetype = "INTERRUPT"; break;
+ case PIPE_ISOCHRONOUS: pipetype = "ISOCHRONOUS"; break;
+ default: pipetype = "UNKNOWN"; break;
+ }; pipetype;}));
+ DWC_ERROR(" Speed: %s\n",
+ ({char *speed;
+ switch (urb->dev->speed) {
+ case USB_SPEED_HIGH: speed = "HIGH"; break;
+ case USB_SPEED_FULL: speed = "FULL"; break;
+ case USB_SPEED_LOW: speed = "LOW"; break;
+ default: speed = "UNKNOWN"; break;
+ }; speed;}));
+ DWC_ERROR(" Max packet size: %d\n",
+ usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)));
+ DWC_ERROR(" Data buffer length: %d\n", urb->transfer_buffer_length);
+ DWC_ERROR(" Transfer buffer: %p, Transfer DMA: %p\n",
+ urb->transfer_buffer, (void *)urb->transfer_dma);
+ DWC_ERROR(" Setup buffer: %p, Setup DMA: %p\n",
+ urb->setup_packet, (void *)urb->setup_dma);
+ DWC_ERROR(" Interval: %d\n", urb->interval);
+
+ dwc_otg_hcd_complete_urb(hcd, urb, -EIO);
+
+ /*
+ * Force a channel halt. Don't call halt_channel because that won't
+ * write to the HCCHARn register in DMA mode to force the halt.
+ */
+ dwc_otg_hc_halt(hcd->core_if, hc, DWC_OTG_HC_XFER_AHB_ERR);
+
+ disable_hc_int(hc_regs, ahberr);
+ return 1;
+}
+
+/**
+ * Handles a host channel transaction error interrupt. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_xacterr_intr(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+ "Transaction Error--\n", hc->hc_num);
+
+ switch (usb_pipetype(qtd->urb->pipe)) {
+ case PIPE_CONTROL:
+ case PIPE_BULK:
+ qtd->error_count++;
+ if (!hc->qh->ping_state) {
+ update_urb_state_xfer_intr(hc, hc_regs, qtd->urb,
+ qtd, DWC_OTG_HC_XFER_XACT_ERR);
+ save_data_toggle(hc, hc_regs, qtd);
+ if (!hc->ep_is_in && qtd->urb->dev->speed == USB_SPEED_HIGH) {
+ hc->qh->ping_state = 1;
+ }
+ }
+
+ /*
+ * Halt the channel so the transfer can be re-started from
+ * the appropriate point or the PING protocol will start.
+ */
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
+ break;
+ case PIPE_INTERRUPT:
+ qtd->error_count++;
+ if (hc->do_split && hc->complete_split) {
+ qtd->complete_split = 0;
+ }
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
+ break;
+ case PIPE_ISOCHRONOUS:
+ {
+ dwc_otg_halt_status_e halt_status;
+ halt_status = update_isoc_urb_state(hcd, hc, hc_regs, qtd,
+ DWC_OTG_HC_XFER_XACT_ERR);
+
+ halt_channel(hcd, hc, qtd, halt_status);
+ }
+ break;
+ }
+
+ disable_hc_int(hc_regs, xacterr);
+
+ return 1;
+}
+
+/**
+ * Handles a host channel frame overrun interrupt. This handler may be called
+ * in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_frmovrun_intr(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+ "Frame Overrun--\n", hc->hc_num);
+
+ switch (usb_pipetype(qtd->urb->pipe)) {
+ case PIPE_CONTROL:
+ case PIPE_BULK:
+ break;
+ case PIPE_INTERRUPT:
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_FRAME_OVERRUN);
+ break;
+ case PIPE_ISOCHRONOUS:
+ {
+ dwc_otg_halt_status_e halt_status;
+ halt_status = update_isoc_urb_state(hcd, hc, hc_regs, qtd,
+ DWC_OTG_HC_XFER_FRAME_OVERRUN);
+
+ halt_channel(hcd, hc, qtd, halt_status);
+ }
+ break;
+ }
+
+ disable_hc_int(hc_regs, frmovrun);
+
+ return 1;
+}
+
+/**
+ * Handles a host channel data toggle error interrupt. This handler may be
+ * called in either DMA mode or Slave mode.
+ */
+static int32_t handle_hc_datatglerr_intr(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+ "Data Toggle Error--\n", hc->hc_num);
+
+ if (hc->ep_is_in) {
+ qtd->error_count = 0;
+ } else {
+ DWC_ERROR("Data Toggle Error on OUT transfer,"
+ "channel %d\n", hc->hc_num);
+ }
+
+ disable_hc_int(hc_regs, datatglerr);
+
+ return 1;
+}
+
+#ifdef DEBUG
+/**
+ * This function is for debug only. It checks that a valid halt status is set
+ * and that HCCHARn.chdis is clear. If there's a problem, corrective action is
+ * taken and a warning is issued.
+ * @return 1 if halt status is ok, 0 otherwise.
+ */
+static inline int halt_status_ok(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ hcchar_data_t hcchar;
+ hctsiz_data_t hctsiz;
+ hcint_data_t hcint;
+ hcintmsk_data_t hcintmsk;
+ hcsplt_data_t hcsplt;
+
+ if (hc->halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS) {
+ /*
+ * This code is here only as a check. This condition should
+ * never happen. Ignore the halt if it does occur.
+ */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ hctsiz.d32 = dwc_read_reg32(&hc_regs->hctsiz);
+ hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+ hcintmsk.d32 = dwc_read_reg32(&hc_regs->hcintmsk);
+ hcsplt.d32 = dwc_read_reg32(&hc_regs->hcsplt);
+ DWC_WARN("%s: hc->halt_status == DWC_OTG"
+ "channel %d, hcchar 0x%08x, hctsiz 0x%08x, "
+ "hcint 0x%08x, hcintmsk 0x%08x, "
+ "hcsplt 0x%08x, qtd->complete_split %d\n",
+ __func__, hc->hc_num, hcchar.d32, hctsiz.d32,
+ hcint.d32, hcintmsk.d32,
+ hcsplt.d32, qtd->complete_split);
+
+ DWC_WARN("%s: no halt status, channel %d, ignoring interrupt\n",
+ __func__, hc->hc_num);
+ DWC_WARN("\n");
+ clear_hc_int(hc_regs, chhltd);
+ return 0;
+ }
+
+ /*
+ * This code is here only as a check. hcchar.chdis should
+ * never be set when the halt interrupt occurs. Halt the
+ * channel again if it does occur.
+ */
+ hcchar.d32 = dwc_read_reg32(&hc_regs->hcchar);
+ if (hcchar.b.chdis) {
+ DWC_WARN("%s: hcchar.chdis set unexpectedly, "
+ "hcchar 0x%08x, trying to halt again\n",
+ __func__, hcchar.d32);
+ clear_hc_int(hc_regs, chhltd);
+ hc->halt_pending = 0;
+ halt_channel(hcd, hc, qtd, hc->halt_status);
+ return 0;
+ }
+
+ return 1;
+}
+#endif
+
+/**
+ * Handles a host Channel Halted interrupt in DMA mode. This handler
+ * determines the reason the channel halted and proceeds accordingly.
+ */
+static void handle_hc_chhltd_intr_dma(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ hcint_data_t hcint;
+ hcintmsk_data_t hcintmsk;
+ int out_nak_enh = 0;
+
+ /* For core with OUT NAK enhancement, the flow for high-
+ * speed CONTROL/BULK OUT is handled a little differently.
+ */
+ if (hcd->core_if->snpsid >= 0x4F54271A) {
+ if (hc->speed == DWC_OTG_EP_SPEED_HIGH && !hc->ep_is_in &&
+ (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
+ hc->ep_type == DWC_OTG_EP_TYPE_BULK)) {
+ printk(KERN_DEBUG "OUT NAK enhancement enabled\n");
+ out_nak_enh = 1;
+ } else {
+ printk(KERN_DEBUG "OUT NAK enhancement disabled, not HS Ctrl/Bulk OUT EP\n");
+ }
+ } else {
+// printk(KERN_DEBUG "OUT NAK enhancement disabled, no core support\n");
+ }
+
+ if (hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE ||
+ hc->halt_status == DWC_OTG_HC_XFER_AHB_ERR) {
+ /*
+ * Just release the channel. A dequeue can happen on a
+ * transfer timeout. In the case of an AHB Error, the channel
+ * was forced to halt because there's no way to gracefully
+ * recover.
+ */
+ release_channel(hcd, hc, qtd, hc->halt_status);
+ return;
+ }
+
+ /* Read the HCINTn register to determine the cause for the halt. */
+ hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+ hcintmsk.d32 = dwc_read_reg32(&hc_regs->hcintmsk);
+
+ if (hcint.b.xfercomp) {
+ /** @todo This is here because of a possible hardware bug. Spec
+ * says that on SPLIT-ISOC OUT transfers in DMA mode that a HALT
+ * interrupt w/ACK bit set should occur, but I only see the
+ * XFERCOMP bit, even with it masked out. This is a workaround
+ * for that behavior. Should fix this when hardware is fixed.
+ */
+ if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !hc->ep_is_in) {
+ handle_hc_ack_intr(hcd, hc, hc_regs, qtd);
+ }
+ handle_hc_xfercomp_intr(hcd, hc, hc_regs, qtd);
+ } else if (hcint.b.stall) {
+ handle_hc_stall_intr(hcd, hc, hc_regs, qtd);
+ } else if (hcint.b.xacterr) {
+ if (out_nak_enh) {
+ if (hcint.b.nyet || hcint.b.nak || hcint.b.ack) {
+ printk(KERN_DEBUG "XactErr with NYET/NAK/ACK\n");
+ qtd->error_count = 0;
+ } else {
+ printk(KERN_DEBUG "XactErr without NYET/NAK/ACK\n");
+ }
+ }
+
+ /*
+ * Must handle xacterr before nak or ack. Could get a xacterr
+ * at the same time as either of these on a BULK/CONTROL OUT
+ * that started with a PING. The xacterr takes precedence.
+ */
+ handle_hc_xacterr_intr(hcd, hc, hc_regs, qtd);
+ } else if (!out_nak_enh) {
+ if (hcint.b.nyet) {
+ /*
+ * Must handle nyet before nak or ack. Could get a nyet at the
+ * same time as either of those on a BULK/CONTROL OUT that
+ * started with a PING. The nyet takes precedence.
+ */
+ handle_hc_nyet_intr(hcd, hc, hc_regs, qtd);
+ } else if (hcint.b.bblerr) {
+ handle_hc_babble_intr(hcd, hc, hc_regs, qtd);
+ } else if (hcint.b.frmovrun) {
+ handle_hc_frmovrun_intr(hcd, hc, hc_regs, qtd);
+ } else if (hcint.b.nak && !hcintmsk.b.nak) {
+ /*
+ * If nak is not masked, it's because a non-split IN transfer
+ * is in an error state. In that case, the nak is handled by
+ * the nak interrupt handler, not here. Handle nak here for
+ * BULK/CONTROL OUT transfers, which halt on a NAK to allow
+ * rewinding the buffer pointer.
+ */
+ handle_hc_nak_intr(hcd, hc, hc_regs, qtd);
+ } else if (hcint.b.ack && !hcintmsk.b.ack) {
+ /*
+ * If ack is not masked, it's because a non-split IN transfer
+ * is in an error state. In that case, the ack is handled by
+ * the ack interrupt handler, not here. Handle ack here for
+ * split transfers. Start splits halt on ACK.
+ */
+ handle_hc_ack_intr(hcd, hc, hc_regs, qtd);
+ } else {
+ if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
+ hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
+ /*
+ * A periodic transfer halted with no other channel
+ * interrupts set. Assume it was halted by the core
+ * because it could not be completed in its scheduled
+ * (micro)frame.
+ */
+#ifdef DEBUG
+ DWC_PRINT("%s: Halt channel %d (assume incomplete periodic transfer)\n",
+ __func__, hc->hc_num);
+#endif
+ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE);
+ } else {
+ DWC_ERROR("%s: Channel %d, DMA Mode -- ChHltd set, but reason "
+ "for halting is unknown, hcint 0x%08x, intsts 0x%08x\n",
+ __func__, hc->hc_num, hcint.d32,
+ dwc_read_reg32(&hcd->core_if->core_global_regs->gintsts));
+ }
+ }
+ } else {
+ printk(KERN_DEBUG "NYET/NAK/ACK/other in non-error case, 0x%08x\n", hcint.d32);
+ }
+}
+
+/**
+ * Handles a host channel Channel Halted interrupt.
+ *
+ * In slave mode, this handler is called only when the driver specifically
+ * requests a halt. This occurs during handling other host channel interrupts
+ * (e.g. nak, xacterr, stall, nyet, etc.).
+ *
+ * In DMA mode, this is the interrupt that occurs when the core has finished
+ * processing a transfer on a channel. Other host channel interrupts (except
+ * ahberr) are disabled in DMA mode.
+ */
+static int32_t handle_hc_chhltd_intr(dwc_otg_hcd_t *hcd,
+ dwc_hc_t *hc,
+ dwc_otg_hc_regs_t *hc_regs,
+ dwc_otg_qtd_t *qtd)
+{
+ DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
+ "Channel Halted--\n", hc->hc_num);
+
+ if (hcd->core_if->dma_enable) {
+ handle_hc_chhltd_intr_dma(hcd, hc, hc_regs, qtd);
+ } else {
+#ifdef DEBUG
+ if (!halt_status_ok(hcd, hc, hc_regs, qtd)) {
+ return 1;
+ }
+#endif
+ release_channel(hcd, hc, qtd, hc->halt_status);
+ }
+
+ return 1;
+}
+
+/** Handles interrupt for a specific Host Channel */
+int32_t dwc_otg_hcd_handle_hc_n_intr(dwc_otg_hcd_t *dwc_otg_hcd, uint32_t num)
+{
+ int retval = 0;
+ hcint_data_t hcint;
+ hcintmsk_data_t hcintmsk;
+ dwc_hc_t *hc;
+ dwc_otg_hc_regs_t *hc_regs;
+ dwc_otg_qtd_t *qtd;
+
+ DWC_DEBUGPL(DBG_HCDV, "--Host Channel Interrupt--, Channel %d\n", num);
+
+ hc = dwc_otg_hcd->hc_ptr_array[num];
+ hc_regs = dwc_otg_hcd->core_if->host_if->hc_regs[num];
+ qtd = list_entry(hc->qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry);
+
+ hcint.d32 = dwc_read_reg32(&hc_regs->hcint);
+ hcintmsk.d32 = dwc_read_reg32(&hc_regs->hcintmsk);
+ DWC_DEBUGPL(DBG_HCDV, " hcint 0x%08x, hcintmsk 0x%08x, hcint&hcintmsk 0x%08x\n",
+ hcint.d32, hcintmsk.d32, (hcint.d32 & hcintmsk.d32));
+ hcint.d32 = hcint.d32 & hcintmsk.d32;
+
+ if (!dwc_otg_hcd->core_if->dma_enable) {
+ if (hcint.b.chhltd && hcint.d32 != 0x2) {
+ hcint.b.chhltd = 0;
+ }
+ }
+
+ if (hcint.b.xfercomp) {
+ retval |= handle_hc_xfercomp_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+ /*
+ * If NYET occurred at same time as Xfer Complete, the NYET is
+ * handled by the Xfer Complete interrupt handler. Don't want
+ * to call the NYET interrupt handler in this case.
+ */
+ hcint.b.nyet = 0;
+ }
+ if (hcint.b.chhltd) {
+ retval |= handle_hc_chhltd_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+ }
+ if (hcint.b.ahberr) {
+ retval |= handle_hc_ahberr_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+ }
+ if (hcint.b.stall) {
+ retval |= handle_hc_stall_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+ }
+ if (hcint.b.nak) {
+ retval |= handle_hc_nak_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+ }
+ if (hcint.b.ack) {
+ retval |= handle_hc_ack_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+ }
+ if (hcint.b.nyet) {
+ retval |= handle_hc_nyet_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+ }
+ if (hcint.b.xacterr) {
+ retval |= handle_hc_xacterr_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+ }
+ if (hcint.b.bblerr) {
+ retval |= handle_hc_babble_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+ }
+ if (hcint.b.frmovrun) {
+ retval |= handle_hc_frmovrun_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+ }
+ if (hcint.b.datatglerr) {
+ retval |= handle_hc_datatglerr_intr(dwc_otg_hcd, hc, hc_regs, qtd);
+ }
+
+ return retval;
+}
+
+#endif /* DWC_DEVICE_ONLY */
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg_ipmate/linux/drivers/dwc_otg_hcd_queue.c $
+ * $Revision: 1.5 $
+ * $Date: 2008-12-15 06:51:32 $
+ * $Change: 537387 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_DEVICE_ONLY
+
+/**
+ * @file
+ *
+ * This file contains the functions to manage Queue Heads and Queue
+ * Transfer Descriptors.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/dma-mapping.h>
+
+#include "dwc_otg_driver.h"
+#include "dwc_otg_hcd.h"
+#include "dwc_otg_regs.h"
+
+/**
+ * This function allocates and initializes a QH.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param[in] urb Holds the information about the device/endpoint that we need
+ * to initialize the QH.
+ *
+ * @return Returns pointer to the newly allocated QH, or NULL on error. */
+dwc_otg_qh_t *dwc_otg_hcd_qh_create (dwc_otg_hcd_t *hcd, struct urb *urb)
+{
+ dwc_otg_qh_t *qh;
+
+ /* Allocate memory */
+ /** @todo add memflags argument */
+ qh = dwc_otg_hcd_qh_alloc ();
+ if (qh == NULL) {
+ return NULL;
+ }
+
+ dwc_otg_hcd_qh_init (hcd, qh, urb);
+ return qh;
+}
+
+/** Free each QTD in the QH's QTD-list then free the QH. QH should already be
+ * removed from a list. QTD list should already be empty if called from URB
+ * Dequeue.
+ *
+ * @param[in] hcd HCD instance.
+ * @param[in] qh The QH to free.
+ */
+void dwc_otg_hcd_qh_free (dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
+{
+ dwc_otg_qtd_t *qtd;
+ struct list_head *pos;
+ unsigned long flags;
+
+ /* Free each QTD in the QTD list */
+ SPIN_LOCK_IRQSAVE(&hcd->lock, flags)
+ for (pos = qh->qtd_list.next;
+ pos != &qh->qtd_list;
+ pos = qh->qtd_list.next)
+ {
+ list_del (pos);
+ qtd = dwc_list_to_qtd (pos);
+ dwc_otg_hcd_qtd_free (qtd);
+ }
+ SPIN_UNLOCK_IRQRESTORE(&hcd->lock, flags)
+
+ if (qh->dw_align_buf) {
+ dma_free_coherent((dwc_otg_hcd_to_hcd(hcd))->self.controller,
+ hcd->core_if->core_params->max_transfer_size,
+ qh->dw_align_buf,
+ qh->dw_align_buf_dma);
+ }
+
+ kfree (qh);
+ return;
+}
+
+/** Initializes a QH structure.
+ *
+ * @param[in] hcd The HCD state structure for the DWC OTG controller.
+ * @param[in] qh The QH to init.
+ * @param[in] urb Holds the information about the device/endpoint that we need
+ * to initialize the QH. */
+#define SCHEDULE_SLOP 10
+void dwc_otg_hcd_qh_init(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh, struct urb *urb)
+{
+ char *speed, *type;
+ memset (qh, 0, sizeof (dwc_otg_qh_t));
+
+ /* Initialize QH */
+ switch (usb_pipetype(urb->pipe)) {
+ case PIPE_CONTROL:
+ qh->ep_type = USB_ENDPOINT_XFER_CONTROL;
+ break;
+ case PIPE_BULK:
+ qh->ep_type = USB_ENDPOINT_XFER_BULK;
+ break;
+ case PIPE_ISOCHRONOUS:
+ qh->ep_type = USB_ENDPOINT_XFER_ISOC;
+ break;
+ case PIPE_INTERRUPT:
+ qh->ep_type = USB_ENDPOINT_XFER_INT;
+ break;
+ }
+
+ qh->ep_is_in = usb_pipein(urb->pipe) ? 1 : 0;
+
+ qh->data_toggle = DWC_OTG_HC_PID_DATA0;
+ qh->maxp = usb_maxpacket(urb->dev, urb->pipe, !(usb_pipein(urb->pipe)));
+ INIT_LIST_HEAD(&qh->qtd_list);
+ INIT_LIST_HEAD(&qh->qh_list_entry);
+ qh->channel = NULL;
+
+ /* FS/LS Enpoint on HS Hub
+ * NOT virtual root hub */
+ qh->do_split = 0;
+ if (((urb->dev->speed == USB_SPEED_LOW) ||
+ (urb->dev->speed == USB_SPEED_FULL)) &&
+ (urb->dev->tt) && (urb->dev->tt->hub) && (urb->dev->tt->hub->devnum != 1))
+ {
+ DWC_DEBUGPL(DBG_HCD, "QH init: EP %d: TT found at hub addr %d, for port %d\n",
+ usb_pipeendpoint(urb->pipe), urb->dev->tt->hub->devnum,
+ urb->dev->ttport);
+ qh->do_split = 1;
+ }
+
+ if (qh->ep_type == USB_ENDPOINT_XFER_INT ||
+ qh->ep_type == USB_ENDPOINT_XFER_ISOC) {
+ /* Compute scheduling parameters once and save them. */
+ hprt0_data_t hprt;
+
+ /** @todo Account for split transfers in the bus time. */
+ int bytecount = dwc_hb_mult(qh->maxp) * dwc_max_packet(qh->maxp);
+
+ /* FIXME: work-around patch by Steven */
+ qh->usecs = NS_TO_US(usb_calc_bus_time(urb->dev->speed,
+ usb_pipein(urb->pipe),
+ (qh->ep_type == USB_ENDPOINT_XFER_ISOC),
+ bytecount));
+
+ /* Start in a slightly future (micro)frame. */
+ qh->sched_frame = dwc_frame_num_inc(hcd->frame_number,
+ SCHEDULE_SLOP);
+ qh->interval = urb->interval;
+#if 0
+ /* Increase interrupt polling rate for debugging. */
+ if (qh->ep_type == USB_ENDPOINT_XFER_INT) {
+ qh->interval = 8;
+ }
+#endif
+ hprt.d32 = dwc_read_reg32(hcd->core_if->host_if->hprt0);
+ if ((hprt.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED) &&
+ ((urb->dev->speed == USB_SPEED_LOW) ||
+ (urb->dev->speed == USB_SPEED_FULL))) {
+ qh->interval *= 8;
+ qh->sched_frame |= 0x7;
+ qh->start_split_frame = qh->sched_frame;
+ }
+
+ }
+
+ DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD QH Initialized\n");
+ DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - qh = %p\n", qh);
+ DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - Device Address = %d\n",
+ urb->dev->devnum);
+ DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - Endpoint %d, %s\n",
+ usb_pipeendpoint(urb->pipe),
+ usb_pipein(urb->pipe) == USB_DIR_IN ? "IN" : "OUT");
+
+ switch(urb->dev->speed) {
+ case USB_SPEED_LOW:
+ speed = "low";
+ break;
+ case USB_SPEED_FULL:
+ speed = "full";
+ break;
+ case USB_SPEED_HIGH:
+ speed = "high";
+ break;
+ default:
+ speed = "?";
+ break;
+ }
+ DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - Speed = %s\n", speed);
+
+ switch (qh->ep_type) {
+ case USB_ENDPOINT_XFER_ISOC:
+ type = "isochronous";
+ break;
+ case USB_ENDPOINT_XFER_INT:
+ type = "interrupt";
+ break;
+ case USB_ENDPOINT_XFER_CONTROL:
+ type = "control";
+ break;
+ case USB_ENDPOINT_XFER_BULK:
+ type = "bulk";
+ break;
+ default:
+ type = "?";
+ break;
+ }
+ DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - Type = %s\n",type);
+
+#ifdef DEBUG
+ if (qh->ep_type == USB_ENDPOINT_XFER_INT) {
+ DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - usecs = %d\n",
+ qh->usecs);
+ DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - interval = %d\n",
+ qh->interval);
+ }
+#endif
+ qh->dw_align_buf = NULL;
+ return;
+}
+
+/**
+ * Checks that a channel is available for a periodic transfer.
+ *
+ * @return 0 if successful, negative error code otherise.
+ */
+static int periodic_channel_available(dwc_otg_hcd_t *hcd)
+{
+ /*
+ * Currently assuming that there is a dedicated host channnel for each
+ * periodic transaction plus at least one host channel for
+ * non-periodic transactions.
+ */
+ int status;
+ int num_channels;
+
+ num_channels = hcd->core_if->core_params->host_channels;
+ if ((hcd->periodic_channels + hcd->non_periodic_channels < num_channels) &&
+ (hcd->periodic_channels < num_channels - 1)) {
+ status = 0;
+ }
+ else {
+ DWC_NOTICE("%s: Total channels: %d, Periodic: %d, Non-periodic: %d\n",
+ __func__, num_channels, hcd->periodic_channels,
+ hcd->non_periodic_channels);
+ status = -ENOSPC;
+ }
+
+ return status;
+}
+
+/**
+ * Checks that there is sufficient bandwidth for the specified QH in the
+ * periodic schedule. For simplicity, this calculation assumes that all the
+ * transfers in the periodic schedule may occur in the same (micro)frame.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh QH containing periodic bandwidth required.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+static int check_periodic_bandwidth(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
+{
+ int status;
+ uint16_t max_claimed_usecs;
+
+ status = 0;
+
+ if (hcd->core_if->core_params->speed == DWC_SPEED_PARAM_HIGH) {
+ /*
+ * High speed mode.
+ * Max periodic usecs is 80% x 125 usec = 100 usec.
+ */
+ max_claimed_usecs = 100 - qh->usecs;
+ } else {
+ /*
+ * Full speed mode.
+ * Max periodic usecs is 90% x 1000 usec = 900 usec.
+ */
+ max_claimed_usecs = 900 - qh->usecs;
+ }
+
+ if (hcd->periodic_usecs > max_claimed_usecs) {
+ DWC_NOTICE("%s: already claimed usecs %d, required usecs %d\n",
+ __func__, hcd->periodic_usecs, qh->usecs);
+ status = -ENOSPC;
+ }
+
+ return status;
+}
+
+/**
+ * Checks that the max transfer size allowed in a host channel is large enough
+ * to handle the maximum data transfer in a single (micro)frame for a periodic
+ * transfer.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh QH for a periodic endpoint.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+static int check_max_xfer_size(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
+{
+ int status;
+ uint32_t max_xfer_size;
+ uint32_t max_channel_xfer_size;
+
+ status = 0;
+
+ max_xfer_size = dwc_max_packet(qh->maxp) * dwc_hb_mult(qh->maxp);
+ max_channel_xfer_size = hcd->core_if->core_params->max_transfer_size;
+
+ if (max_xfer_size > max_channel_xfer_size) {
+ DWC_NOTICE("%s: Periodic xfer length %d > "
+ "max xfer length for channel %d\n",
+ __func__, max_xfer_size, max_channel_xfer_size);
+ status = -ENOSPC;
+ }
+
+ return status;
+}
+
+/**
+ * Schedules an interrupt or isochronous transfer in the periodic schedule.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh QH for the periodic transfer. The QH should already contain the
+ * scheduling information.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+static int schedule_periodic(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
+{
+ int status = 0;
+
+ status = periodic_channel_available(hcd);
+ if (status) {
+ DWC_NOTICE("%s: No host channel available for periodic "
+ "transfer.\n", __func__);
+ return status;
+ }
+
+ status = check_periodic_bandwidth(hcd, qh);
+ if (status) {
+ DWC_NOTICE("%s: Insufficient periodic bandwidth for "
+ "periodic transfer.\n", __func__);
+ return status;
+ }
+
+ status = check_max_xfer_size(hcd, qh);
+ if (status) {
+ DWC_NOTICE("%s: Channel max transfer size too small "
+ "for periodic transfer.\n", __func__);
+ return status;
+ }
+
+ /* Always start in the inactive schedule. */
+ list_add_tail(&qh->qh_list_entry, &hcd->periodic_sched_inactive);
+
+ /* Reserve the periodic channel. */
+ hcd->periodic_channels++;
+
+ /* Update claimed usecs per (micro)frame. */
+ hcd->periodic_usecs += qh->usecs;
+
+ /* Update average periodic bandwidth claimed and # periodic reqs for usbfs. */
+ hcd_to_bus(dwc_otg_hcd_to_hcd(hcd))->bandwidth_allocated += qh->usecs / qh->interval;
+ if (qh->ep_type == USB_ENDPOINT_XFER_INT) {
+ hcd_to_bus(dwc_otg_hcd_to_hcd(hcd))->bandwidth_int_reqs++;
+ DWC_DEBUGPL(DBG_HCD, "Scheduled intr: qh %p, usecs %d, period %d\n",
+ qh, qh->usecs, qh->interval);
+ } else {
+ hcd_to_bus(dwc_otg_hcd_to_hcd(hcd))->bandwidth_isoc_reqs++;
+ DWC_DEBUGPL(DBG_HCD, "Scheduled isoc: qh %p, usecs %d, period %d\n",
+ qh, qh->usecs, qh->interval);
+ }
+
+ return status;
+}
+
+/**
+ * This function adds a QH to either the non periodic or periodic schedule if
+ * it is not already in the schedule. If the QH is already in the schedule, no
+ * action is taken.
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+int dwc_otg_hcd_qh_add (dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
+{
+ unsigned long flags;
+ int status = 0;
+
+ SPIN_LOCK_IRQSAVE(&hcd->lock, flags)
+
+ if (!list_empty(&qh->qh_list_entry)) {
+ /* QH already in a schedule. */
+ goto done;
+ }
+
+ /* Add the new QH to the appropriate schedule */
+ if (dwc_qh_is_non_per(qh)) {
+ /* Always start in the inactive schedule. */
+ list_add_tail(&qh->qh_list_entry, &hcd->non_periodic_sched_inactive);
+ } else {
+ status = schedule_periodic(hcd, qh);
+ }
+
+ done:
+ SPIN_UNLOCK_IRQRESTORE(&hcd->lock, flags)
+
+ return status;
+}
+
+/**
+ * Removes an interrupt or isochronous transfer from the periodic schedule.
+ *
+ * @param hcd The HCD state structure for the DWC OTG controller.
+ * @param qh QH for the periodic transfer.
+ */
+static void deschedule_periodic(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
+{
+ list_del_init(&qh->qh_list_entry);
+
+ /* Release the periodic channel reservation. */
+ hcd->periodic_channels--;
+
+ /* Update claimed usecs per (micro)frame. */
+ hcd->periodic_usecs -= qh->usecs;
+
+ /* Update average periodic bandwidth claimed and # periodic reqs for usbfs. */
+ hcd_to_bus(dwc_otg_hcd_to_hcd(hcd))->bandwidth_allocated -= qh->usecs / qh->interval;
+
+ if (qh->ep_type == USB_ENDPOINT_XFER_INT) {
+ hcd_to_bus(dwc_otg_hcd_to_hcd(hcd))->bandwidth_int_reqs--;
+ DWC_DEBUGPL(DBG_HCD, "Descheduled intr: qh %p, usecs %d, period %d\n",
+ qh, qh->usecs, qh->interval);
+ } else {
+ hcd_to_bus(dwc_otg_hcd_to_hcd(hcd))->bandwidth_isoc_reqs--;
+ DWC_DEBUGPL(DBG_HCD, "Descheduled isoc: qh %p, usecs %d, period %d\n",
+ qh, qh->usecs, qh->interval);
+ }
+}
+
+/**
+ * Removes a QH from either the non-periodic or periodic schedule. Memory is
+ * not freed.
+ *
+ * @param[in] hcd The HCD state structure.
+ * @param[in] qh QH to remove from schedule. */
+void dwc_otg_hcd_qh_remove (dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
+{
+ unsigned long flags;
+
+ SPIN_LOCK_IRQSAVE(&hcd->lock, flags);
+
+ if (list_empty(&qh->qh_list_entry)) {
+ /* QH is not in a schedule. */
+ goto done;
+ }
+
+ if (dwc_qh_is_non_per(qh)) {
+ if (hcd->non_periodic_qh_ptr == &qh->qh_list_entry) {
+ hcd->non_periodic_qh_ptr = hcd->non_periodic_qh_ptr->next;
+ }
+ list_del_init(&qh->qh_list_entry);
+ } else {
+ deschedule_periodic(hcd, qh);
+ }
+
+ done:
+ SPIN_UNLOCK_IRQRESTORE(&hcd->lock, flags)
+}
+
+/**
+ * Deactivates a QH. For non-periodic QHs, removes the QH from the active
+ * non-periodic schedule. The QH is added to the inactive non-periodic
+ * schedule if any QTDs are still attached to the QH.
+ *
+ * For periodic QHs, the QH is removed from the periodic queued schedule. If
+ * there are any QTDs still attached to the QH, the QH is added to either the
+ * periodic inactive schedule or the periodic ready schedule and its next
+ * scheduled frame is calculated. The QH is placed in the ready schedule if
+ * the scheduled frame has been reached already. Otherwise it's placed in the
+ * inactive schedule. If there are no QTDs attached to the QH, the QH is
+ * completely removed from the periodic schedule.
+ */
+void dwc_otg_hcd_qh_deactivate(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh, int sched_next_periodic_split)
+{
+ unsigned long flags;
+ SPIN_LOCK_IRQSAVE(&hcd->lock, flags);
+
+ if (dwc_qh_is_non_per(qh)) {
+ dwc_otg_hcd_qh_remove(hcd, qh);
+ if (!list_empty(&qh->qtd_list)) {
+ /* Add back to inactive non-periodic schedule. */
+ dwc_otg_hcd_qh_add(hcd, qh);
+ }
+ } else {
+ uint16_t frame_number = dwc_otg_hcd_get_frame_number(dwc_otg_hcd_to_hcd(hcd));
+
+ if (qh->do_split) {
+ /* Schedule the next continuing periodic split transfer */
+ if (sched_next_periodic_split) {
+
+ qh->sched_frame = frame_number;
+ if (dwc_frame_num_le(frame_number,
+ dwc_frame_num_inc(qh->start_split_frame, 1))) {
+ /*
+ * Allow one frame to elapse after start
+ * split microframe before scheduling
+ * complete split, but DONT if we are
+ * doing the next start split in the
+ * same frame for an ISOC out.
+ */
+ if ((qh->ep_type != USB_ENDPOINT_XFER_ISOC) || (qh->ep_is_in != 0)) {
+ qh->sched_frame = dwc_frame_num_inc(qh->sched_frame, 1);
+ }
+ }
+ } else {
+ qh->sched_frame = dwc_frame_num_inc(qh->start_split_frame,
+ qh->interval);
+ if (dwc_frame_num_le(qh->sched_frame, frame_number)) {
+ qh->sched_frame = frame_number;
+ }
+ qh->sched_frame |= 0x7;
+ qh->start_split_frame = qh->sched_frame;
+ }
+ } else {
+ qh->sched_frame = dwc_frame_num_inc(qh->sched_frame, qh->interval);
+ if (dwc_frame_num_le(qh->sched_frame, frame_number)) {
+ qh->sched_frame = frame_number;
+ }
+ }
+
+ if (list_empty(&qh->qtd_list)) {
+ dwc_otg_hcd_qh_remove(hcd, qh);
+ } else {
+ /*
+ * Remove from periodic_sched_queued and move to
+ * appropriate queue.
+ */
+ if (qh->sched_frame == frame_number) {
+ list_move(&qh->qh_list_entry,
+ &hcd->periodic_sched_ready);
+ } else {
+ list_move(&qh->qh_list_entry,
+ &hcd->periodic_sched_inactive);
+ }
+ }
+ }
+
+ SPIN_UNLOCK_IRQRESTORE(&hcd->lock, flags);
+}
+
+/**
+ * This function allocates and initializes a QTD.
+ *
+ * @param[in] urb The URB to create a QTD from. Each URB-QTD pair will end up
+ * pointing to each other so each pair should have a unique correlation.
+ *
+ * @return Returns pointer to the newly allocated QTD, or NULL on error. */
+dwc_otg_qtd_t *dwc_otg_hcd_qtd_create (struct urb *urb)
+{
+ dwc_otg_qtd_t *qtd;
+
+ qtd = dwc_otg_hcd_qtd_alloc ();
+ if (qtd == NULL) {
+ return NULL;
+ }
+
+ dwc_otg_hcd_qtd_init (qtd, urb);
+ return qtd;
+}
+
+/**
+ * Initializes a QTD structure.
+ *
+ * @param[in] qtd The QTD to initialize.
+ * @param[in] urb The URB to use for initialization. */
+void dwc_otg_hcd_qtd_init (dwc_otg_qtd_t *qtd, struct urb *urb)
+{
+ memset (qtd, 0, sizeof (dwc_otg_qtd_t));
+ qtd->urb = urb;
+ if (usb_pipecontrol(urb->pipe)) {
+ /*
+ * The only time the QTD data toggle is used is on the data
+ * phase of control transfers. This phase always starts with
+ * DATA1.
+ */
+ qtd->data_toggle = DWC_OTG_HC_PID_DATA1;
+ qtd->control_phase = DWC_OTG_CONTROL_SETUP;
+ }
+
+ /* start split */
+ qtd->complete_split = 0;
+ qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_ALL;
+ qtd->isoc_split_offset = 0;
+
+ /* Store the qtd ptr in the urb to reference what QTD. */
+ urb->hcpriv = qtd;
+ return;
+}
+
+/**
+ * This function adds a QTD to the QTD-list of a QH. It will find the correct
+ * QH to place the QTD into. If it does not find a QH, then it will create a
+ * new QH. If the QH to which the QTD is added is not currently scheduled, it
+ * is placed into the proper schedule based on its EP type.
+ *
+ * @param[in] qtd The QTD to add
+ * @param[in] dwc_otg_hcd The DWC HCD structure
+ *
+ * @return 0 if successful, negative error code otherwise.
+ */
+int dwc_otg_hcd_qtd_add (dwc_otg_qtd_t *qtd,
+ dwc_otg_hcd_t *dwc_otg_hcd)
+{
+ struct usb_host_endpoint *ep;
+ dwc_otg_qh_t *qh;
+ unsigned long flags;
+ int retval = 0;
+
+ struct urb *urb = qtd->urb;
+
+ SPIN_LOCK_IRQSAVE(&dwc_otg_hcd->lock, flags);
+
+ /*
+ * Get the QH which holds the QTD-list to insert to. Create QH if it
+ * doesn't exist.
+ */
+ ep = dwc_urb_to_endpoint(urb);
+ qh = (dwc_otg_qh_t *)ep->hcpriv;
+ if (qh == NULL) {
+ qh = dwc_otg_hcd_qh_create (dwc_otg_hcd, urb);
+ if (qh == NULL) {
+ goto done;
+ }
+ ep->hcpriv = qh;
+ }
+
+ retval = dwc_otg_hcd_qh_add(dwc_otg_hcd, qh);
+ if (retval == 0) {
+ list_add_tail(&qtd->qtd_list_entry, &qh->qtd_list);
+ }
+
+ done:
+ SPIN_UNLOCK_IRQRESTORE(&dwc_otg_hcd->lock, flags);
+
+ return retval;
+}
+
+#endif /* DWC_DEVICE_ONLY */
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd.c $
+ * $Revision: 1.5 $
+ * $Date: 2008-11-27 09:21:25 $
+ * $Change: 1115682 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_HOST_ONLY
+
+/** @file
+ * This file implements the Peripheral Controller Driver.
+ *
+ * The Peripheral Controller Driver (PCD) is responsible for
+ * translating requests from the Function Driver into the appropriate
+ * actions on the DWC_otg controller. It isolates the Function Driver
+ * from the specifics of the controller by providing an API to the
+ * Function Driver.
+ *
+ * The Peripheral Controller Driver for Linux will implement the
+ * Gadget API, so that the existing Gadget drivers can be used.
+ * (Gadget Driver is the Linux terminology for a Function Driver.)
+ *
+ * The Linux Gadget API is defined in the header file
+ * <code><linux/usb_gadget.h></code>. The USB EP operations API is
+ * defined in the structure <code>usb_ep_ops</code> and the USB
+ * Controller API is defined in the structure
+ * <code>usb_gadget_ops</code>.
+ *
+ * An important function of the PCD is managing interrupts generated
+ * by the DWC_otg controller. The implementation of the DWC_otg device
+ * mode interrupt service routines is in dwc_otg_pcd_intr.c.
+ *
+ * @todo Add Device Mode test modes (Test J mode, Test K mode, etc).
+ * @todo Does it work when the request size is greater than DEPTSIZ
+ * transfer size
+ *
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/dma-mapping.h>
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
+# include <linux/usb/ch9.h>
+#else
+# include <linux/usb_ch9.h>
+#endif
+
+#include <linux/usb_gadget.h>
+
+#include "dwc_otg_driver.h"
+#include "dwc_otg_pcd.h"
+
+
+/**
+ * Static PCD pointer for use in usb_gadget_register_driver and
+ * usb_gadget_unregister_driver. Initialized in dwc_otg_pcd_init.
+ */
+static dwc_otg_pcd_t *s_pcd = 0;
+
+
+/* Display the contents of the buffer */
+extern void dump_msg(const u8 *buf, unsigned int length);
+
+
+/**
+ * This function completes a request. It call's the request call back.
+ */
+void dwc_otg_request_done(dwc_otg_pcd_ep_t *ep, dwc_otg_pcd_request_t *req,
+ int status)
+{
+ unsigned stopped = ep->stopped;
+
+ DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, ep);
+ list_del_init(&req->queue);
+
+ if (req->req.status == -EINPROGRESS) {
+ req->req.status = status;
+ } else {
+ status = req->req.status;
+ }
+
+ /* don't modify queue heads during completion callback */
+ ep->stopped = 1;
+ SPIN_UNLOCK(&ep->pcd->lock);
+ req->req.complete(&ep->ep, &req->req);
+ SPIN_LOCK(&ep->pcd->lock);
+
+ if (ep->pcd->request_pending > 0) {
+ --ep->pcd->request_pending;
+ }
+
+ ep->stopped = stopped;
+}
+
+/**
+ * This function terminates all the requsts in the EP request queue.
+ */
+void dwc_otg_request_nuke(dwc_otg_pcd_ep_t *ep)
+{
+ dwc_otg_pcd_request_t *req;
+
+ ep->stopped = 1;
+
+ /* called with irqs blocked?? */
+ while (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next, dwc_otg_pcd_request_t,
+ queue);
+ dwc_otg_request_done(ep, req, -ESHUTDOWN);
+ }
+}
+
+/* USB Endpoint Operations */
+/*
+ * The following sections briefly describe the behavior of the Gadget
+ * API endpoint operations implemented in the DWC_otg driver
+ * software. Detailed descriptions of the generic behavior of each of
+ * these functions can be found in the Linux header file
+ * include/linux/usb_gadget.h.
+ *
+ * The Gadget API provides wrapper functions for each of the function
+ * pointers defined in usb_ep_ops. The Gadget Driver calls the wrapper
+ * function, which then calls the underlying PCD function. The
+ * following sections are named according to the wrapper
+ * functions. Within each section, the corresponding DWC_otg PCD
+ * function name is specified.
+ *
+ */
+
+/**
+ * This function assigns periodic Tx FIFO to an periodic EP
+ * in shared Tx FIFO mode
+ */
+static uint32_t assign_perio_tx_fifo(dwc_otg_core_if_t *core_if)
+{
+ uint32_t PerTxMsk = 1;
+ int i;
+ for(i = 0; i < core_if->hwcfg4.b.num_dev_perio_in_ep; ++i)
+ {
+ if((PerTxMsk & core_if->p_tx_msk) == 0) {
+ core_if->p_tx_msk |= PerTxMsk;
+ return i + 1;
+ }
+ PerTxMsk <<= 1;
+ }
+ return 0;
+}
+/**
+ * This function releases periodic Tx FIFO
+ * in shared Tx FIFO mode
+ */
+static void release_perio_tx_fifo(dwc_otg_core_if_t *core_if, uint32_t fifo_num)
+{
+ core_if->p_tx_msk = (core_if->p_tx_msk & (1 << (fifo_num - 1))) ^ core_if->p_tx_msk;
+}
+/**
+ * This function assigns periodic Tx FIFO to an periodic EP
+ * in shared Tx FIFO mode
+ */
+static uint32_t assign_tx_fifo(dwc_otg_core_if_t *core_if)
+{
+ uint32_t TxMsk = 1;
+ int i;
+
+ for(i = 0; i < core_if->hwcfg4.b.num_in_eps; ++i)
+ {
+ if((TxMsk & core_if->tx_msk) == 0) {
+ core_if->tx_msk |= TxMsk;
+ return i + 1;
+ }
+ TxMsk <<= 1;
+ }
+ return 0;
+}
+/**
+ * This function releases periodic Tx FIFO
+ * in shared Tx FIFO mode
+ */
+static void release_tx_fifo(dwc_otg_core_if_t *core_if, uint32_t fifo_num)
+{
+ core_if->tx_msk = (core_if->tx_msk & (1 << (fifo_num - 1))) ^ core_if->tx_msk;
+}
+
+/**
+ * This function is called by the Gadget Driver for each EP to be
+ * configured for the current configuration (SET_CONFIGURATION).
+ *
+ * This function initializes the dwc_otg_ep_t data structure, and then
+ * calls dwc_otg_ep_activate.
+ */
+static int dwc_otg_pcd_ep_enable(struct usb_ep *usb_ep,
+ const struct usb_endpoint_descriptor *ep_desc)
+{
+ dwc_otg_pcd_ep_t *ep = 0;
+ dwc_otg_pcd_t *pcd = 0;
+ unsigned long flags;
+
+ DWC_DEBUGPL(DBG_PCDV,"%s(%p,%p)\n", __func__, usb_ep, ep_desc);
+
+ ep = container_of(usb_ep, dwc_otg_pcd_ep_t, ep);
+ if (!usb_ep || !ep_desc || ep->desc ||
+ ep_desc->bDescriptorType != USB_DT_ENDPOINT) {
+ DWC_WARN("%s, bad ep or descriptor\n", __func__);
+ return -EINVAL;
+ }
+ if (ep == &ep->pcd->ep0) {
+ DWC_WARN("%s, bad ep(0)\n", __func__);
+ return -EINVAL;
+ }
+
+ /* Check FIFO size? */
+ if (!ep_desc->wMaxPacketSize) {
+ DWC_WARN("%s, bad %s maxpacket\n", __func__, usb_ep->name);
+ return -ERANGE;
+ }
+
+ pcd = ep->pcd;
+ if (!pcd->driver || pcd->gadget.speed == USB_SPEED_UNKNOWN) {
+ DWC_WARN("%s, bogus device state\n", __func__);
+ return -ESHUTDOWN;
+ }
+
+ SPIN_LOCK_IRQSAVE(&pcd->lock, flags);
+
+ ep->desc = ep_desc;
+ ep->ep.maxpacket = le16_to_cpu (ep_desc->wMaxPacketSize);
+
+ /*
+ * Activate the EP
+ */
+ ep->stopped = 0;
+
+ ep->dwc_ep.is_in = (USB_DIR_IN & ep_desc->bEndpointAddress) != 0;
+ ep->dwc_ep.maxpacket = ep->ep.maxpacket;
+
+ ep->dwc_ep.type = ep_desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
+
+ if(ep->dwc_ep.is_in) {
+ if(!pcd->otg_dev->core_if->en_multiple_tx_fifo) {
+ ep->dwc_ep.tx_fifo_num = 0;
+
+ if (ep->dwc_ep.type == USB_ENDPOINT_XFER_ISOC) {
+ /*
+ * if ISOC EP then assign a Periodic Tx FIFO.
+ */
+ ep->dwc_ep.tx_fifo_num = assign_perio_tx_fifo(pcd->otg_dev->core_if);
+ }
+ } else {
+ /*
+ * if Dedicated FIFOs mode is on then assign a Tx FIFO.
+ */
+ ep->dwc_ep.tx_fifo_num = assign_tx_fifo(pcd->otg_dev->core_if);
+
+ }
+ }
+ /* Set initial data PID. */
+ if (ep->dwc_ep.type == USB_ENDPOINT_XFER_BULK) {
+ ep->dwc_ep.data_pid_start = 0;
+ }
+
+ DWC_DEBUGPL(DBG_PCD, "Activate %s-%s: type=%d, mps=%d desc=%p\n",
+ ep->ep.name, (ep->dwc_ep.is_in ?"IN":"OUT"),
+ ep->dwc_ep.type, ep->dwc_ep.maxpacket, ep->desc);
+
+ if(ep->dwc_ep.type != USB_ENDPOINT_XFER_ISOC) {
+ ep->dwc_ep.desc_addr = dwc_otg_ep_alloc_desc_chain(&ep->dwc_ep.dma_desc_addr, MAX_DMA_DESC_CNT);
+ }
+
+ dwc_otg_ep_activate(GET_CORE_IF(pcd), &ep->dwc_ep);
+ SPIN_UNLOCK_IRQRESTORE(&pcd->lock, flags);
+
+ return 0;
+}
+
+/**
+ * This function is called when an EP is disabled due to disconnect or
+ * change in configuration. Any pending requests will terminate with a
+ * status of -ESHUTDOWN.
+ *
+ * This function modifies the dwc_otg_ep_t data structure for this EP,
+ * and then calls dwc_otg_ep_deactivate.
+ */
+static int dwc_otg_pcd_ep_disable(struct usb_ep *usb_ep)
+{
+ dwc_otg_pcd_ep_t *ep;
+ dwc_otg_pcd_t *pcd = 0;
+ unsigned long flags;
+
+ DWC_DEBUGPL(DBG_PCDV,"%s(%p)\n", __func__, usb_ep);
+ ep = container_of(usb_ep, dwc_otg_pcd_ep_t, ep);
+ if (!usb_ep || !ep->desc) {
+ DWC_DEBUGPL(DBG_PCD, "%s, %s not enabled\n", __func__,
+ usb_ep ? ep->ep.name : NULL);
+ return -EINVAL;
+ }
+
+ SPIN_LOCK_IRQSAVE(&ep->pcd->lock, flags);
+
+ dwc_otg_request_nuke(ep);
+
+ dwc_otg_ep_deactivate(GET_CORE_IF(ep->pcd), &ep->dwc_ep);
+ ep->desc = 0;
+ ep->stopped = 1;
+
+ if(ep->dwc_ep.is_in) {
+ dwc_otg_flush_tx_fifo(GET_CORE_IF(ep->pcd), ep->dwc_ep.tx_fifo_num);
+ release_perio_tx_fifo(GET_CORE_IF(ep->pcd), ep->dwc_ep.tx_fifo_num);
+ release_tx_fifo(GET_CORE_IF(ep->pcd), ep->dwc_ep.tx_fifo_num);
+ }
+
+ /* Free DMA Descriptors */
+ pcd = ep->pcd;
+
+ SPIN_UNLOCK_IRQRESTORE(&ep->pcd->lock, flags);
+
+ if(ep->dwc_ep.type != USB_ENDPOINT_XFER_ISOC && ep->dwc_ep.desc_addr) {
+ dwc_otg_ep_free_desc_chain(ep->dwc_ep.desc_addr, ep->dwc_ep.dma_desc_addr, MAX_DMA_DESC_CNT);
+ }
+
+ DWC_DEBUGPL(DBG_PCD, "%s disabled\n", usb_ep->name);
+ return 0;
+}
+
+
+/**
+ * This function allocates a request object to use with the specified
+ * endpoint.
+ *
+ * @param ep The endpoint to be used with with the request
+ * @param gfp_flags the GFP_* flags to use.
+ */
+static struct usb_request *dwc_otg_pcd_alloc_request(struct usb_ep *ep,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ int gfp_flags
+#else
+ gfp_t gfp_flags
+#endif
+ )
+{
+ dwc_otg_pcd_request_t *req;
+
+ DWC_DEBUGPL(DBG_PCDV,"%s(%p,%d)\n", __func__, ep, gfp_flags);
+ if (0 == ep) {
+ DWC_WARN("%s() %s\n", __func__, "Invalid EP!\n");
+ return 0;
+ }
+ req = kmalloc(sizeof(dwc_otg_pcd_request_t), gfp_flags);
+ if (0 == req) {
+ DWC_WARN("%s() %s\n", __func__,
+ "request allocation failed!\n");
+ return 0;
+ }
+ memset(req, 0, sizeof(dwc_otg_pcd_request_t));
+ req->req.dma = DMA_ADDR_INVALID;
+ INIT_LIST_HEAD(&req->queue);
+ return &req->req;
+}
+
+/**
+ * This function frees a request object.
+ *
+ * @param ep The endpoint associated with the request
+ * @param req The request being freed
+ */
+static void dwc_otg_pcd_free_request(struct usb_ep *ep,
+ struct usb_request *req)
+{
+ dwc_otg_pcd_request_t *request;
+ DWC_DEBUGPL(DBG_PCDV,"%s(%p,%p)\n", __func__, ep, req);
+
+ if (0 == ep || 0 == req) {
+ DWC_WARN("%s() %s\n", __func__,
+ "Invalid ep or req argument!\n");
+ return;
+ }
+
+ request = container_of(req, dwc_otg_pcd_request_t, req);
+ kfree(request);
+}
+
+/**
+ * This function allocates an I/O buffer to be used for a transfer
+ * to/from the specified endpoint.
+ *
+ * @param usb_ep The endpoint to be used with with the request
+ * @param bytes The desired number of bytes for the buffer
+ * @param dma Pointer to the buffer's DMA address; must be valid
+ * @param gfp_flags the GFP_* flags to use.
+ * @return address of a new buffer or null is buffer could not be allocated.
+ */
+static void *dwc_otg_pcd_alloc_buffer(struct usb_ep *usb_ep, unsigned bytes,
+ dma_addr_t *dma,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ int gfp_flags
+#else
+ gfp_t gfp_flags
+#endif
+ )
+{
+ void *buf;
+ dwc_otg_pcd_ep_t *ep;
+ dwc_otg_pcd_t *pcd = 0;
+
+ ep = container_of(usb_ep, dwc_otg_pcd_ep_t, ep);
+ pcd = ep->pcd;
+
+ DWC_DEBUGPL(DBG_PCDV,"%s(%p,%d,%p,%0x)\n", __func__, usb_ep, bytes,
+ dma, gfp_flags);
+
+ /* Check dword alignment */
+ if ((bytes & 0x3UL) != 0) {
+ DWC_WARN("%s() Buffer size is not a multiple of"
+ "DWORD size (%d)",__func__, bytes);
+ }
+
+ if (GET_CORE_IF(pcd)->dma_enable) {
+ buf = dma_alloc_coherent (NULL, bytes, dma, gfp_flags);
+ }
+ else {
+ buf = kmalloc(bytes, gfp_flags);
+ }
+
+ /* Check dword alignment */
+ if (((int)buf & 0x3UL) != 0) {
+ DWC_WARN("%s() Buffer is not DWORD aligned (%p)",
+ __func__, buf);
+ }
+
+ return buf;
+}
+
+/**
+ * This function frees an I/O buffer that was allocated by alloc_buffer.
+ *
+ * @param usb_ep the endpoint associated with the buffer
+ * @param buf address of the buffer
+ * @param dma The buffer's DMA address
+ * @param bytes The number of bytes of the buffer
+ */
+static void dwc_otg_pcd_free_buffer(struct usb_ep *usb_ep, void *buf,
+ dma_addr_t dma, unsigned bytes)
+{
+ dwc_otg_pcd_ep_t *ep;
+ dwc_otg_pcd_t *pcd = 0;
+
+ ep = container_of(usb_ep, dwc_otg_pcd_ep_t, ep);
+ pcd = ep->pcd;
+
+ DWC_DEBUGPL(DBG_PCDV,"%s(%p,%p,%0x,%d)\n", __func__, ep, buf, dma, bytes);
+
+ if (GET_CORE_IF(pcd)->dma_enable) {
+ dma_free_coherent (NULL, bytes, buf, dma);
+ }
+ else {
+ kfree(buf);
+ }
+}
+
+
+/**
+ * This function is used to submit an I/O Request to an EP.
+ *
+ * - When the request completes the request's completion callback
+ * is called to return the request to the driver.
+ * - An EP, except control EPs, may have multiple requests
+ * pending.
+ * - Once submitted the request cannot be examined or modified.
+ * - Each request is turned into one or more packets.
+ * - A BULK EP can queue any amount of data; the transfer is
+ * packetized.
+ * - Zero length Packets are specified with the request 'zero'
+ * flag.
+ */
+static int dwc_otg_pcd_ep_queue(struct usb_ep *usb_ep,
+ struct usb_request *usb_req,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ int gfp_flags
+#else
+ gfp_t gfp_flags
+#endif
+ )
+{
+ int prevented = 0;
+ dwc_otg_pcd_request_t *req;
+ dwc_otg_pcd_ep_t *ep;
+ dwc_otg_pcd_t *pcd;
+ unsigned long flags = 0;
+ dwc_otg_core_if_t *_core_if;
+
+ DWC_DEBUGPL(DBG_PCDV,"%s(%p,%p,%d)\n",
+ __func__, usb_ep, usb_req, gfp_flags);
+
+ req = container_of(usb_req, dwc_otg_pcd_request_t, req);
+ if (!usb_req || !usb_req->complete || !usb_req->buf ||
+ !list_empty(&req->queue)) {
+ DWC_WARN("%s, bad params\n", __func__);
+ return -EINVAL;
+ }
+
+ ep = container_of(usb_ep, dwc_otg_pcd_ep_t, ep);
+ if (!usb_ep || (!ep->desc && ep->dwc_ep.num != 0)/* || ep->stopped != 0*/) {
+ DWC_WARN("%s, bad ep\n", __func__);
+ return -EINVAL;
+ }
+
+ pcd = ep->pcd;
+ if (!pcd->driver || pcd->gadget.speed == USB_SPEED_UNKNOWN) {
+ DWC_DEBUGPL(DBG_PCDV, "gadget.speed=%d\n", pcd->gadget.speed);
+ DWC_WARN("%s, bogus device state\n", __func__);
+ return -ESHUTDOWN;
+ }
+
+
+ DWC_DEBUGPL(DBG_PCD, "%s queue req %p, len %d buf %p\n",
+ usb_ep->name, usb_req, usb_req->length, usb_req->buf);
+
+ if (!GET_CORE_IF(pcd)->core_params->opt) {
+ if (ep->dwc_ep.num != 0) {
+ DWC_ERROR("%s queue req %p, len %d buf %p\n",
+ usb_ep->name, usb_req, usb_req->length, usb_req->buf);
+ }
+ }
+
+ SPIN_LOCK_IRQSAVE(&ep->pcd->lock, flags);
+
+
+ /**************************************************
+ New add by kaiker ,for DMA mode bug
+ ************************************************/
+ //by kaiker ,for RT3052 USB OTG device mode
+
+ _core_if = GET_CORE_IF(pcd);
+
+ if (_core_if->dma_enable)
+ {
+ usb_req->dma = virt_to_phys((void *)usb_req->buf);
+
+ if(ep->dwc_ep.is_in)
+ {
+ if(usb_req->length)
+ dma_cache_wback_inv((unsigned long)usb_req->buf, usb_req->length + 2);
+ }
+ }
+
+
+
+#if defined(DEBUG) & defined(VERBOSE)
+ dump_msg(usb_req->buf, usb_req->length);
+#endif
+
+ usb_req->status = -EINPROGRESS;
+ usb_req->actual = 0;
+
+ /*
+ * For EP0 IN without premature status, zlp is required?
+ */
+ if (ep->dwc_ep.num == 0 && ep->dwc_ep.is_in) {
+ DWC_DEBUGPL(DBG_PCDV, "%s-OUT ZLP\n", usb_ep->name);
+ //_req->zero = 1;
+ }
+
+ /* Start the transfer */
+ if (list_empty(&ep->queue) && !ep->stopped) {
+ /* EP0 Transfer? */
+ if (ep->dwc_ep.num == 0) {
+ switch (pcd->ep0state) {
+ case EP0_IN_DATA_PHASE:
+ DWC_DEBUGPL(DBG_PCD,
+ "%s ep0: EP0_IN_DATA_PHASE\n",
+ __func__);
+ break;
+
+ case EP0_OUT_DATA_PHASE:
+ DWC_DEBUGPL(DBG_PCD,
+ "%s ep0: EP0_OUT_DATA_PHASE\n",
+ __func__);
+ if (pcd->request_config) {
+ /* Complete STATUS PHASE */
+ ep->dwc_ep.is_in = 1;
+ pcd->ep0state = EP0_IN_STATUS_PHASE;
+ }
+ break;
+
+ case EP0_IN_STATUS_PHASE:
+ DWC_DEBUGPL(DBG_PCD,
+ "%s ep0: EP0_IN_STATUS_PHASE\n",
+ __func__);
+ break;
+
+ default:
+ DWC_DEBUGPL(DBG_ANY, "ep0: odd state %d\n",
+ pcd->ep0state);
+ SPIN_UNLOCK_IRQRESTORE(&pcd->lock, flags);
+ return -EL2HLT;
+ }
+ ep->dwc_ep.dma_addr = usb_req->dma;
+ ep->dwc_ep.start_xfer_buff = usb_req->buf;
+ ep->dwc_ep.xfer_buff = usb_req->buf;
+ ep->dwc_ep.xfer_len = usb_req->length;
+ ep->dwc_ep.xfer_count = 0;
+ ep->dwc_ep.sent_zlp = 0;
+ ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
+
+ if(usb_req->zero) {
+ if((ep->dwc_ep.xfer_len % ep->dwc_ep.maxpacket == 0)
+ && (ep->dwc_ep.xfer_len != 0)) {
+ ep->dwc_ep.sent_zlp = 1;
+ }
+
+ }
+
+ dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), &ep->dwc_ep);
+ }
+ else {
+
+ uint32_t max_transfer = GET_CORE_IF(ep->pcd)->core_params->max_transfer_size;
+
+ /* Setup and start the Transfer */
+ ep->dwc_ep.dma_addr = usb_req->dma;
+ ep->dwc_ep.start_xfer_buff = usb_req->buf;
+ ep->dwc_ep.xfer_buff = usb_req->buf;
+ ep->dwc_ep.sent_zlp = 0;
+ ep->dwc_ep.total_len = usb_req->length;
+ ep->dwc_ep.xfer_len = 0;
+ ep->dwc_ep.xfer_count = 0;
+
+ if(max_transfer > MAX_TRANSFER_SIZE) {
+ ep->dwc_ep.maxxfer = max_transfer - (max_transfer % ep->dwc_ep.maxpacket);
+ } else {
+ ep->dwc_ep.maxxfer = max_transfer;
+ }
+
+ if(usb_req->zero) {
+ if((ep->dwc_ep.total_len % ep->dwc_ep.maxpacket == 0)
+ && (ep->dwc_ep.total_len != 0)) {
+ ep->dwc_ep.sent_zlp = 1;
+ }
+
+ }
+ dwc_otg_ep_start_transfer(GET_CORE_IF(pcd), &ep->dwc_ep);
+ }
+ }
+
+ if ((req != 0) || prevented) {
+ ++pcd->request_pending;
+ list_add_tail(&req->queue, &ep->queue);
+ if (ep->dwc_ep.is_in && ep->stopped && !(GET_CORE_IF(pcd)->dma_enable)) {
+ /** @todo NGS Create a function for this. */
+ diepmsk_data_t diepmsk = { .d32 = 0};
+ diepmsk.b.intktxfemp = 1;
+ if(&GET_CORE_IF(pcd)->multiproc_int_enable) {
+ dwc_modify_reg32(&GET_CORE_IF(pcd)->dev_if->dev_global_regs->diepeachintmsk[ep->dwc_ep.num],
+ 0, diepmsk.d32);
+ } else {
+ dwc_modify_reg32(&GET_CORE_IF(pcd)->dev_if->dev_global_regs->diepmsk, 0, diepmsk.d32);
+ }
+ }
+ }
+
+ SPIN_UNLOCK_IRQRESTORE(&pcd->lock, flags);
+ return 0;
+}
+
+/**
+ * This function cancels an I/O request from an EP.
+ */
+static int dwc_otg_pcd_ep_dequeue(struct usb_ep *usb_ep,
+ struct usb_request *usb_req)
+{
+ dwc_otg_pcd_request_t *req;
+ dwc_otg_pcd_ep_t *ep;
+ dwc_otg_pcd_t *pcd;
+ unsigned long flags;
+
+ DWC_DEBUGPL(DBG_PCDV,"%s(%p,%p)\n", __func__, usb_ep, usb_req);
+
+ ep = container_of(usb_ep, dwc_otg_pcd_ep_t, ep);
+ if (!usb_ep || !usb_req || (!ep->desc && ep->dwc_ep.num != 0)) {
+ DWC_WARN("%s, bad argument\n", __func__);
+ return -EINVAL;
+ }
+ pcd = ep->pcd;
+ if (!pcd->driver || pcd->gadget.speed == USB_SPEED_UNKNOWN) {
+ DWC_WARN("%s, bogus device state\n", __func__);
+ return -ESHUTDOWN;
+ }
+
+ SPIN_LOCK_IRQSAVE(&pcd->lock, flags);
+ DWC_DEBUGPL(DBG_PCDV, "%s %s %s %p\n", __func__, usb_ep->name,
+ ep->dwc_ep.is_in ? "IN" : "OUT",
+ usb_req);
+
+ /* make sure it's actually queued on this endpoint */
+ list_for_each_entry(req, &ep->queue, queue)
+ {
+ if (&req->req == usb_req) {
+ break;
+ }
+ }
+
+ if (&req->req != usb_req) {
+ SPIN_UNLOCK_IRQRESTORE(&pcd->lock, flags);
+ return -EINVAL;
+ }
+
+ if (!list_empty(&req->queue)) {
+ dwc_otg_request_done(ep, req, -ECONNRESET);
+ }
+ else {
+ req = 0;
+ }
+
+ SPIN_UNLOCK_IRQRESTORE(&pcd->lock, flags);
+
+ return req ? 0 : -EOPNOTSUPP;
+}
+
+/**
+ * usb_ep_set_halt stalls an endpoint.
+ *
+ * usb_ep_clear_halt clears an endpoint halt and resets its data
+ * toggle.
+ *
+ * Both of these functions are implemented with the same underlying
+ * function. The behavior depends on the value argument.
+ *
+ * @param[in] usb_ep the Endpoint to halt or clear halt.
+ * @param[in] value
+ * - 0 means clear_halt.
+ * - 1 means set_halt,
+ * - 2 means clear stall lock flag.
+ * - 3 means set stall lock flag.
+ */
+static int dwc_otg_pcd_ep_set_halt(struct usb_ep *usb_ep, int value)
+{
+ int retval = 0;
+ unsigned long flags;
+ dwc_otg_pcd_ep_t *ep = 0;
+
+
+ DWC_DEBUGPL(DBG_PCD,"HALT %s %d\n", usb_ep->name, value);
+
+ ep = container_of(usb_ep, dwc_otg_pcd_ep_t, ep);
+
+ if (!usb_ep || (!ep->desc && ep != &ep->pcd->ep0) ||
+ ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
+ DWC_WARN("%s, bad ep\n", __func__);
+ return -EINVAL;
+ }
+
+ SPIN_LOCK_IRQSAVE(&ep->pcd->lock, flags);
+ if (!list_empty(&ep->queue)) {
+ DWC_WARN("%s() %s XFer In process\n", __func__, usb_ep->name);
+ retval = -EAGAIN;
+ }
+ else if (value == 0) {
+ dwc_otg_ep_clear_stall(ep->pcd->otg_dev->core_if,
+ &ep->dwc_ep);
+ }
+ else if(value == 1) {
+ if (ep->dwc_ep.is_in == 1 && ep->pcd->otg_dev->core_if->dma_desc_enable) {
+ dtxfsts_data_t txstatus;
+ fifosize_data_t txfifosize;
+
+ txfifosize.d32 = dwc_read_reg32(&ep->pcd->otg_dev->core_if->core_global_regs->dptxfsiz_dieptxf[ep->dwc_ep.tx_fifo_num]);
+ txstatus.d32 = dwc_read_reg32(&ep->pcd->otg_dev->core_if->dev_if->in_ep_regs[ep->dwc_ep.num]->dtxfsts);
+
+ if(txstatus.b.txfspcavail < txfifosize.b.depth) {
+ DWC_WARN("%s() %s Data In Tx Fifo\n", __func__, usb_ep->name);
+ retval = -EAGAIN;
+ }
+ else {
+ if (ep->dwc_ep.num == 0) {
+ ep->pcd->ep0state = EP0_STALL;
+ }
+
+ ep->stopped = 1;
+ dwc_otg_ep_set_stall(ep->pcd->otg_dev->core_if,
+ &ep->dwc_ep);
+ }
+ }
+ else {
+ if (ep->dwc_ep.num == 0) {
+ ep->pcd->ep0state = EP0_STALL;
+ }
+
+ ep->stopped = 1;
+ dwc_otg_ep_set_stall(ep->pcd->otg_dev->core_if,
+ &ep->dwc_ep);
+ }
+ }
+ else if (value == 2) {
+ ep->dwc_ep.stall_clear_flag = 0;
+ }
+ else if (value == 3) {
+ ep->dwc_ep.stall_clear_flag = 1;
+ }
+
+ SPIN_UNLOCK_IRQRESTORE(&ep->pcd->lock, flags);
+ return retval;
+}
+
+/**
+ * This function allocates a DMA Descriptor chain for the Endpoint
+ * buffer to be used for a transfer to/from the specified endpoint.
+ */
+dwc_otg_dma_desc_t* dwc_otg_ep_alloc_desc_chain(uint32_t * dma_desc_addr, uint32_t count)
+{
+
+ return dma_alloc_coherent(NULL, count * sizeof(dwc_otg_dma_desc_t), dma_desc_addr, GFP_KERNEL);
+}
+
+/**
+ * This function frees a DMA Descriptor chain that was allocated by ep_alloc_desc.
+ */
+void dwc_otg_ep_free_desc_chain(dwc_otg_dma_desc_t* desc_addr, uint32_t dma_desc_addr, uint32_t count)
+{
+ dma_free_coherent(NULL, count * sizeof(dwc_otg_dma_desc_t), desc_addr, dma_desc_addr);
+}
+
+#ifdef DWC_EN_ISOC
+
+/**
+ * This function initializes a descriptor chain for Isochronous transfer
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dwc_ep The EP to start the transfer on.
+ *
+ */
+void dwc_otg_iso_ep_start_ddma_transfer(dwc_otg_core_if_t *core_if, dwc_ep_t *dwc_ep)
+{
+
+ dsts_data_t dsts = { .d32 = 0};
+ depctl_data_t depctl = { .d32 = 0 };
+ volatile uint32_t *addr;
+ int i, j;
+
+ if(dwc_ep->is_in)
+ dwc_ep->desc_cnt = dwc_ep->buf_proc_intrvl / dwc_ep->bInterval;
+ else
+ dwc_ep->desc_cnt = dwc_ep->buf_proc_intrvl * dwc_ep->pkt_per_frm / dwc_ep->bInterval;
+
+
+ /** Allocate descriptors for double buffering */
+ dwc_ep->iso_desc_addr = dwc_otg_ep_alloc_desc_chain(&dwc_ep->iso_dma_desc_addr,dwc_ep->desc_cnt*2);
+ if(dwc_ep->desc_addr) {
+ DWC_WARN("%s, can't allocate DMA descriptor chain\n", __func__);
+ return;
+ }
+
+ dsts.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dsts);
+
+ /** ISO OUT EP */
+ if(dwc_ep->is_in == 0) {
+ desc_sts_data_t sts = { .d32 =0 };
+ dwc_otg_dma_desc_t* dma_desc = dwc_ep->iso_desc_addr;
+ dma_addr_t dma_ad;
+ uint32_t data_per_desc;
+ dwc_otg_dev_out_ep_regs_t *out_regs =
+ core_if->dev_if->out_ep_regs[dwc_ep->num];
+ int offset;
+
+ addr = &core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl;
+ dma_ad = (dma_addr_t)dwc_read_reg32(&(out_regs->doepdma));
+
+ /** Buffer 0 descriptors setup */
+ dma_ad = dwc_ep->dma_addr0;
+
+ sts.b_iso_out.bs = BS_HOST_READY;
+ sts.b_iso_out.rxsts = 0;
+ sts.b_iso_out.l = 0;
+ sts.b_iso_out.sp = 0;
+ sts.b_iso_out.ioc = 0;
+ sts.b_iso_out.pid = 0;
+ sts.b_iso_out.framenum = 0;
+
+ offset = 0;
+ for(i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm; i+= dwc_ep->pkt_per_frm)
+ {
+
+ for(j = 0; j < dwc_ep->pkt_per_frm; ++j)
+ {
+ data_per_desc = ((j + 1) * dwc_ep->maxpacket > dwc_ep->data_per_frame) ?
+ dwc_ep->data_per_frame - j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+
+ data_per_desc += (data_per_desc % 4) ? (4 - data_per_desc % 4):0;
+ sts.b_iso_out.rxbytes = data_per_desc;
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+
+ offset += data_per_desc;
+ dma_desc ++;
+ (uint32_t)dma_ad += data_per_desc;
+ }
+ }
+
+ for(j = 0; j < dwc_ep->pkt_per_frm - 1; ++j)
+ {
+ data_per_desc = ((j + 1) * dwc_ep->maxpacket > dwc_ep->data_per_frame) ?
+ dwc_ep->data_per_frame - j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+ data_per_desc += (data_per_desc % 4) ? (4 - data_per_desc % 4):0;
+ sts.b_iso_out.rxbytes = data_per_desc;
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+
+ offset += data_per_desc;
+ dma_desc ++;
+ (uint32_t)dma_ad += data_per_desc;
+ }
+
+ sts.b_iso_out.ioc = 1;
+ data_per_desc = ((j + 1) * dwc_ep->maxpacket > dwc_ep->data_per_frame) ?
+ dwc_ep->data_per_frame - j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+ data_per_desc += (data_per_desc % 4) ? (4 - data_per_desc % 4):0;
+ sts.b_iso_out.rxbytes = data_per_desc;
+
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+ dma_desc ++;
+
+ /** Buffer 1 descriptors setup */
+ sts.b_iso_out.ioc = 0;
+ dma_ad = dwc_ep->dma_addr1;
+
+ offset = 0;
+ for(i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm; i+= dwc_ep->pkt_per_frm)
+ {
+ for(j = 0; j < dwc_ep->pkt_per_frm; ++j)
+ {
+ data_per_desc = ((j + 1) * dwc_ep->maxpacket > dwc_ep->data_per_frame) ?
+ dwc_ep->data_per_frame - j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+ data_per_desc += (data_per_desc % 4) ? (4 - data_per_desc % 4):0;
+ sts.b_iso_out.rxbytes = data_per_desc;
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+
+ offset += data_per_desc;
+ dma_desc ++;
+ (uint32_t)dma_ad += data_per_desc;
+ }
+ }
+ for(j = 0; j < dwc_ep->pkt_per_frm - 1; ++j)
+ {
+ data_per_desc = ((j + 1) * dwc_ep->maxpacket > dwc_ep->data_per_frame) ?
+ dwc_ep->data_per_frame - j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+ data_per_desc += (data_per_desc % 4) ? (4 - data_per_desc % 4):0;
+ sts.b_iso_out.rxbytes = data_per_desc;
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+
+ offset += data_per_desc;
+ dma_desc ++;
+ (uint32_t)dma_ad += data_per_desc;
+ }
+
+ sts.b_iso_out.ioc = 1;
+ sts.b_iso_out.l = 1;
+ data_per_desc = ((j + 1) * dwc_ep->maxpacket > dwc_ep->data_per_frame) ?
+ dwc_ep->data_per_frame - j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+ data_per_desc += (data_per_desc % 4) ? (4 - data_per_desc % 4):0;
+ sts.b_iso_out.rxbytes = data_per_desc;
+
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+
+ dwc_ep->next_frame = 0;
+
+ /** Write dma_ad into DOEPDMA register */
+ dwc_write_reg32(&(out_regs->doepdma),(uint32_t)dwc_ep->iso_dma_desc_addr);
+
+ }
+ /** ISO IN EP */
+ else {
+ desc_sts_data_t sts = { .d32 =0 };
+ dwc_otg_dma_desc_t* dma_desc = dwc_ep->iso_desc_addr;
+ dma_addr_t dma_ad;
+ dwc_otg_dev_in_ep_regs_t *in_regs =
+ core_if->dev_if->in_ep_regs[dwc_ep->num];
+ unsigned int frmnumber;
+ fifosize_data_t txfifosize,rxfifosize;
+
+ txfifosize.d32 = dwc_read_reg32(&core_if->dev_if->in_ep_regs[dwc_ep->num]->dtxfsts);
+ rxfifosize.d32 = dwc_read_reg32(&core_if->core_global_regs->grxfsiz);
+
+
+ addr = &core_if->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
+
+ dma_ad = dwc_ep->dma_addr0;
+
+ dsts.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dsts);
+
+ sts.b_iso_in.bs = BS_HOST_READY;
+ sts.b_iso_in.txsts = 0;
+ sts.b_iso_in.sp = (dwc_ep->data_per_frame % dwc_ep->maxpacket)? 1 : 0;
+ sts.b_iso_in.ioc = 0;
+ sts.b_iso_in.pid = dwc_ep->pkt_per_frm;
+
+
+ frmnumber = dwc_ep->next_frame;
+
+ sts.b_iso_in.framenum = frmnumber;
+ sts.b_iso_in.txbytes = dwc_ep->data_per_frame;
+ sts.b_iso_in.l = 0;
+
+ /** Buffer 0 descriptors setup */
+ for(i = 0; i < dwc_ep->desc_cnt - 1; i++)
+ {
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+ dma_desc ++;
+
+ (uint32_t)dma_ad += dwc_ep->data_per_frame;
+ sts.b_iso_in.framenum += dwc_ep->bInterval;
+ }
+
+ sts.b_iso_in.ioc = 1;
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+ ++dma_desc;
+
+ /** Buffer 1 descriptors setup */
+ sts.b_iso_in.ioc = 0;
+ dma_ad = dwc_ep->dma_addr1;
+
+ for(i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm; i+= dwc_ep->pkt_per_frm)
+ {
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+ dma_desc ++;
+
+ (uint32_t)dma_ad += dwc_ep->data_per_frame;
+ sts.b_iso_in.framenum += dwc_ep->bInterval;
+
+ sts.b_iso_in.ioc = 0;
+ }
+ sts.b_iso_in.ioc = 1;
+ sts.b_iso_in.l = 1;
+
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+
+ dwc_ep->next_frame = sts.b_iso_in.framenum + dwc_ep->bInterval;
+
+ /** Write dma_ad into diepdma register */
+ dwc_write_reg32(&(in_regs->diepdma),(uint32_t)dwc_ep->iso_dma_desc_addr);
+ }
+ /** Enable endpoint, clear nak */
+ depctl.d32 = 0;
+ depctl.b.epena = 1;
+ depctl.b.usbactep = 1;
+ depctl.b.cnak = 1;
+
+ dwc_modify_reg32(addr, depctl.d32,depctl.d32);
+ depctl.d32 = dwc_read_reg32(addr);
+}
+
+/**
+ * This function initializes a descriptor chain for Isochronous transfer
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+
+void dwc_otg_iso_ep_start_buf_transfer(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ depctl_data_t depctl = { .d32 = 0 };
+ volatile uint32_t *addr;
+
+
+ if(ep->is_in) {
+ addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
+ } else {
+ addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
+ }
+
+
+ if(core_if->dma_enable == 0 || core_if->dma_desc_enable!= 0) {
+ return;
+ } else {
+ deptsiz_data_t deptsiz = { .d32 = 0 };
+
+ ep->xfer_len = ep->data_per_frame * ep->buf_proc_intrvl / ep->bInterval;
+ ep->pkt_cnt = (ep->xfer_len - 1 + ep->maxpacket) /
+ ep->maxpacket;
+ ep->xfer_count = 0;
+ ep->xfer_buff = (ep->proc_buf_num) ? ep->xfer_buff1 : ep->xfer_buff0;
+ ep->dma_addr = (ep->proc_buf_num) ? ep->dma_addr1 : ep->dma_addr0;
+
+ if(ep->is_in) {
+ /* Program the transfer size and packet count
+ * as follows: xfersize = N * maxpacket +
+ * short_packet pktcnt = N + (short_packet
+ * exist ? 1 : 0)
+ */
+ deptsiz.b.mc = ep->pkt_per_frm;
+ deptsiz.b.xfersize = ep->xfer_len;
+ deptsiz.b.pktcnt =
+ (ep->xfer_len - 1 + ep->maxpacket) /
+ ep->maxpacket;
+ dwc_write_reg32(&core_if->dev_if->in_ep_regs[ep->num]->dieptsiz, deptsiz.d32);
+
+ /* Write the DMA register */
+ dwc_write_reg32 (&(core_if->dev_if->in_ep_regs[ep->num]->diepdma), (uint32_t)ep->dma_addr);
+
+ } else {
+ deptsiz.b.pktcnt =
+ (ep->xfer_len + (ep->maxpacket - 1)) /
+ ep->maxpacket;
+ deptsiz.b.xfersize = deptsiz.b.pktcnt * ep->maxpacket;
+
+ dwc_write_reg32(&core_if->dev_if->out_ep_regs[ep->num]->doeptsiz, deptsiz.d32);
+
+ /* Write the DMA register */
+ dwc_write_reg32 (&(core_if->dev_if->out_ep_regs[ep->num]->doepdma), (uint32_t)ep->dma_addr);
+
+ }
+ /** Enable endpoint, clear nak */
+ depctl.d32 = 0;
+ dwc_modify_reg32(addr, depctl.d32,depctl.d32);
+
+ depctl.b.epena = 1;
+ depctl.b.cnak = 1;
+
+ dwc_modify_reg32(addr, depctl.d32,depctl.d32);
+ }
+}
+
+
+/**
+ * This function does the setup for a data transfer for an EP and
+ * starts the transfer. For an IN transfer, the packets will be
+ * loaded into the appropriate Tx FIFO in the ISR. For OUT transfers,
+ * the packets are unloaded from the Rx FIFO in the ISR. the ISR.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ */
+
+void dwc_otg_iso_ep_start_transfer(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ if(core_if->dma_enable) {
+ if(core_if->dma_desc_enable) {
+ if(ep->is_in) {
+ ep->desc_cnt = ep->pkt_cnt / ep->pkt_per_frm;
+ } else {
+ ep->desc_cnt = ep->pkt_cnt;
+ }
+ dwc_otg_iso_ep_start_ddma_transfer(core_if, ep);
+ } else {
+ if(core_if->pti_enh_enable) {
+ dwc_otg_iso_ep_start_buf_transfer(core_if, ep);
+ } else {
+ ep->cur_pkt_addr = (ep->proc_buf_num) ? ep->xfer_buff1 : ep->xfer_buff0;
+ ep->cur_pkt_dma_addr = (ep->proc_buf_num) ? ep->dma_addr1 : ep->dma_addr0;
+ dwc_otg_iso_ep_start_frm_transfer(core_if, ep);
+ }
+ }
+ } else {
+ ep->cur_pkt_addr = (ep->proc_buf_num) ? ep->xfer_buff1 : ep->xfer_buff0;
+ ep->cur_pkt_dma_addr = (ep->proc_buf_num) ? ep->dma_addr1 : ep->dma_addr0;
+ dwc_otg_iso_ep_start_frm_transfer(core_if, ep);
+ }
+}
+
+/**
+ * This function does the setup for a data transfer for an EP and
+ * starts the transfer. For an IN transfer, the packets will be
+ * loaded into the appropriate Tx FIFO in the ISR. For OUT transfers,
+ * the packets are unloaded from the Rx FIFO in the ISR. the ISR.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ */
+
+void dwc_otg_iso_ep_stop_transfer(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ depctl_data_t depctl = { .d32 = 0 };
+ volatile uint32_t *addr;
+
+ if(ep->is_in == 1) {
+ addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
+ }
+ else {
+ addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
+ }
+
+ /* disable the ep */
+ depctl.d32 = dwc_read_reg32(addr);
+
+ depctl.b.epdis = 1;
+ depctl.b.snak = 1;
+
+ dwc_write_reg32(addr, depctl.d32);
+
+ if(core_if->dma_desc_enable &&
+ ep->iso_desc_addr && ep->iso_dma_desc_addr) {
+ dwc_otg_ep_free_desc_chain(ep->iso_desc_addr,ep->iso_dma_desc_addr,ep->desc_cnt * 2);
+ }
+
+ /* reset varibales */
+ ep->dma_addr0 = 0;
+ ep->dma_addr1 = 0;
+ ep->xfer_buff0 = 0;
+ ep->xfer_buff1 = 0;
+ ep->data_per_frame = 0;
+ ep->data_pattern_frame = 0;
+ ep->sync_frame = 0;
+ ep->buf_proc_intrvl = 0;
+ ep->bInterval = 0;
+ ep->proc_buf_num = 0;
+ ep->pkt_per_frm = 0;
+ ep->pkt_per_frm = 0;
+ ep->desc_cnt = 0;
+ ep->iso_desc_addr = 0;
+ ep->iso_dma_desc_addr = 0;
+}
+
+
+/**
+ * This function is used to submit an ISOC Transfer Request to an EP.
+ *
+ * - Every time a sync period completes the request's completion callback
+ * is called to provide data to the gadget driver.
+ * - Once submitted the request cannot be modified.
+ * - Each request is turned into periodic data packets untill ISO
+ * Transfer is stopped..
+ */
+static int dwc_otg_pcd_iso_ep_start(struct usb_ep *usb_ep, struct usb_iso_request *req,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ int gfp_flags
+#else
+ gfp_t gfp_flags
+#endif
+)
+{
+ dwc_otg_pcd_ep_t *ep;
+ dwc_otg_pcd_t *pcd;
+ dwc_ep_t *dwc_ep;
+ unsigned long flags = 0;
+ int32_t frm_data;
+ dwc_otg_core_if_t *core_if;
+ dcfg_data_t dcfg;
+ dsts_data_t dsts;
+
+
+ if (!req || !req->process_buffer || !req->buf0 || !req->buf1) {
+ DWC_WARN("%s, bad params\n", __func__);
+ return -EINVAL;
+ }
+
+ ep = container_of(usb_ep, dwc_otg_pcd_ep_t, ep);
+
+ if (!usb_ep || !ep->desc || ep->dwc_ep.num == 0) {
+ DWC_WARN("%s, bad ep\n", __func__);
+ return -EINVAL;
+ }
+
+ pcd = ep->pcd;
+ core_if = GET_CORE_IF(pcd);
+
+ dcfg.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dcfg);
+
+ if (!pcd->driver || pcd->gadget.speed == USB_SPEED_UNKNOWN) {
+ DWC_DEBUGPL(DBG_PCDV, "gadget.speed=%d\n", pcd->gadget.speed);
+ DWC_WARN("%s, bogus device state\n", __func__);
+ return -ESHUTDOWN;
+ }
+
+ SPIN_LOCK_IRQSAVE(&ep->pcd->lock, flags);
+
+ dwc_ep = &ep->dwc_ep;
+
+ if(ep->iso_req) {
+ DWC_WARN("%s, iso request in progress\n", __func__);
+ }
+ req->status = -EINPROGRESS;
+
+ dwc_ep->dma_addr0 = req->dma0;
+ dwc_ep->dma_addr1 = req->dma1;
+
+ dwc_ep->xfer_buff0 = req->buf0;
+ dwc_ep->xfer_buff1 = req->buf1;
+
+ ep->iso_req = req;
+
+ dwc_ep->data_per_frame = req->data_per_frame;
+
+ /** @todo - pattern data support is to be implemented in the future */
+ dwc_ep->data_pattern_frame = req->data_pattern_frame;
+ dwc_ep->sync_frame = req->sync_frame;
+
+ dwc_ep->buf_proc_intrvl = req->buf_proc_intrvl;
+
+ dwc_ep->bInterval = 1 << (ep->desc->bInterval - 1);
+
+ dwc_ep->proc_buf_num = 0;
+
+ dwc_ep->pkt_per_frm = 0;
+ frm_data = ep->dwc_ep.data_per_frame;
+ while(frm_data > 0) {
+ dwc_ep->pkt_per_frm++;
+ frm_data -= ep->dwc_ep.maxpacket;
+ }
+
+ dsts.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dsts);
+
+ if(req->flags & USB_REQ_ISO_ASAP) {
+ dwc_ep->next_frame = dsts.b.soffn + 1;
+ if(dwc_ep->bInterval != 1){
+ dwc_ep->next_frame = dwc_ep->next_frame + (dwc_ep->bInterval - 1 - dwc_ep->next_frame % dwc_ep->bInterval);
+ }
+ } else {
+ dwc_ep->next_frame = req->start_frame;
+ }
+
+
+ if(!core_if->pti_enh_enable) {
+ dwc_ep->pkt_cnt = dwc_ep->buf_proc_intrvl * dwc_ep->pkt_per_frm / dwc_ep->bInterval;
+ } else {
+ dwc_ep->pkt_cnt =
+ (dwc_ep->data_per_frame * (dwc_ep->buf_proc_intrvl / dwc_ep->bInterval)
+ - 1 + dwc_ep->maxpacket) / dwc_ep->maxpacket;
+ }
+
+ if(core_if->dma_desc_enable) {
+ dwc_ep->desc_cnt =
+ dwc_ep->buf_proc_intrvl * dwc_ep->pkt_per_frm / dwc_ep->bInterval;
+ }
+
+ dwc_ep->pkt_info = kmalloc(sizeof(iso_pkt_info_t) * dwc_ep->pkt_cnt, GFP_KERNEL);
+ if(!dwc_ep->pkt_info) {
+ return -ENOMEM;
+ }
+ if(core_if->pti_enh_enable) {
+ memset(dwc_ep->pkt_info, 0, sizeof(iso_pkt_info_t) * dwc_ep->pkt_cnt);
+ }
+
+ dwc_ep->cur_pkt = 0;
+
+ SPIN_UNLOCK_IRQRESTORE(&pcd->lock, flags);
+
+ dwc_otg_iso_ep_start_transfer(core_if, dwc_ep);
+
+ return 0;
+}
+
+/**
+ * This function stops ISO EP Periodic Data Transfer.
+ */
+static int dwc_otg_pcd_iso_ep_stop(struct usb_ep *usb_ep, struct usb_iso_request *req)
+{
+ dwc_otg_pcd_ep_t *ep;
+ dwc_otg_pcd_t *pcd;
+ dwc_ep_t *dwc_ep;
+ unsigned long flags;
+
+ ep = container_of(usb_ep, dwc_otg_pcd_ep_t, ep);
+
+ if (!usb_ep || !ep->desc || ep->dwc_ep.num == 0) {
+ DWC_WARN("%s, bad ep\n", __func__);
+ return -EINVAL;
+ }
+
+ pcd = ep->pcd;
+
+ if (!pcd->driver || pcd->gadget.speed == USB_SPEED_UNKNOWN) {
+ DWC_DEBUGPL(DBG_PCDV, "gadget.speed=%d\n", pcd->gadget.speed);
+ DWC_WARN("%s, bogus device state\n", __func__);
+ return -ESHUTDOWN;
+ }
+
+ dwc_ep = &ep->dwc_ep;
+
+ dwc_otg_iso_ep_stop_transfer(GET_CORE_IF(pcd), dwc_ep);
+
+ kfree(dwc_ep->pkt_info);
+
+ SPIN_LOCK_IRQSAVE(&pcd->lock, flags);
+
+ if(ep->iso_req != req) {
+ return -EINVAL;
+ }
+
+ req->status = -ECONNRESET;
+
+ SPIN_UNLOCK_IRQRESTORE(&pcd->lock, flags);
+
+
+ ep->iso_req = 0;
+
+ return 0;
+}
+
+/**
+ * This function is used for perodical data exchnage between PCD and gadget drivers.
+ * for Isochronous EPs
+ *
+ * - Every time a sync period completes this function is called to
+ * perform data exchange between PCD and gadget
+ */
+void dwc_otg_iso_buffer_done(dwc_otg_pcd_ep_t *ep, dwc_otg_pcd_iso_request_t *req)
+{
+ int i;
+ struct usb_gadget_iso_packet_descriptor *iso_packet;
+ dwc_ep_t *dwc_ep;
+
+ dwc_ep = &ep->dwc_ep;
+
+ if(ep->iso_req->status == -ECONNRESET) {
+ DWC_PRINT("Device has already disconnected\n");
+ /*Device has been disconnected*/
+ return;
+ }
+
+ if(dwc_ep->proc_buf_num != 0) {
+ iso_packet = ep->iso_req->iso_packet_desc0;
+ }
+
+ else {
+ iso_packet = ep->iso_req->iso_packet_desc1;
+ }
+
+ /* Fill in ISOC packets descriptors & pass to gadget driver*/
+
+ for(i = 0; i < dwc_ep->pkt_cnt; ++i) {
+ iso_packet[i].status = dwc_ep->pkt_info[i].status;
+ iso_packet[i].offset = dwc_ep->pkt_info[i].offset;
+ iso_packet[i].actual_length = dwc_ep->pkt_info[i].length;
+ dwc_ep->pkt_info[i].status = 0;
+ dwc_ep->pkt_info[i].offset = 0;
+ dwc_ep->pkt_info[i].length = 0;
+ }
+
+ /* Call callback function to process data buffer */
+ ep->iso_req->status = 0;/* success */
+
+ SPIN_UNLOCK(&ep->pcd->lock);
+ ep->iso_req->process_buffer(&ep->ep, ep->iso_req);
+ SPIN_LOCK(&ep->pcd->lock);
+}
+
+
+static struct usb_iso_request *dwc_otg_pcd_alloc_iso_request(struct usb_ep *ep,int packets,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ int gfp_flags
+#else
+ gfp_t gfp_flags
+#endif
+)
+{
+ struct usb_iso_request *pReq = NULL;
+ uint32_t req_size;
+
+
+ req_size = sizeof(struct usb_iso_request);
+ req_size += (2 * packets * (sizeof(struct usb_gadget_iso_packet_descriptor)));
+
+
+ pReq = kmalloc(req_size, gfp_flags);
+ if (!pReq) {
+ DWC_WARN("%s, can't allocate Iso Request\n", __func__);
+ return 0;
+ }
+ pReq->iso_packet_desc0 = (void*) (pReq + 1);
+
+ pReq->iso_packet_desc1 = pReq->iso_packet_desc0 + packets;
+
+ return pReq;
+}
+
+static void dwc_otg_pcd_free_iso_request(struct usb_ep *ep, struct usb_iso_request *req)
+{
+ kfree(req);
+}
+
+static struct usb_isoc_ep_ops dwc_otg_pcd_ep_ops =
+{
+ .ep_ops =
+ {
+ .enable = dwc_otg_pcd_ep_enable,
+ .disable = dwc_otg_pcd_ep_disable,
+
+ .alloc_request = dwc_otg_pcd_alloc_request,
+ .free_request = dwc_otg_pcd_free_request,
+
+ .alloc_buffer = dwc_otg_pcd_alloc_buffer,
+ .free_buffer = dwc_otg_pcd_free_buffer,
+
+ .queue = dwc_otg_pcd_ep_queue,
+ .dequeue = dwc_otg_pcd_ep_dequeue,
+
+ .set_halt = dwc_otg_pcd_ep_set_halt,
+ .fifo_status = 0,
+ .fifo_flush = 0,
+ },
+ .iso_ep_start = dwc_otg_pcd_iso_ep_start,
+ .iso_ep_stop = dwc_otg_pcd_iso_ep_stop,
+ .alloc_iso_request = dwc_otg_pcd_alloc_iso_request,
+ .free_iso_request = dwc_otg_pcd_free_iso_request,
+};
+
+#else
+
+
+static struct usb_ep_ops dwc_otg_pcd_ep_ops =
+{
+ .enable = dwc_otg_pcd_ep_enable,
+ .disable = dwc_otg_pcd_ep_disable,
+
+ .alloc_request = dwc_otg_pcd_alloc_request,
+ .free_request = dwc_otg_pcd_free_request,
+
+ .alloc_buffer = dwc_otg_pcd_alloc_buffer,
+ .free_buffer = dwc_otg_pcd_free_buffer,
+
+ .queue = dwc_otg_pcd_ep_queue,
+ .dequeue = dwc_otg_pcd_ep_dequeue,
+
+ .set_halt = dwc_otg_pcd_ep_set_halt,
+ .fifo_status = 0,
+ .fifo_flush = 0,
+
+
+};
+
+#endif /* DWC_EN_ISOC */
+/* Gadget Operations */
+/**
+ * The following gadget operations will be implemented in the DWC_otg
+ * PCD. Functions in the API that are not described below are not
+ * implemented.
+ *
+ * The Gadget API provides wrapper functions for each of the function
+ * pointers defined in usb_gadget_ops. The Gadget Driver calls the
+ * wrapper function, which then calls the underlying PCD function. The
+ * following sections are named according to the wrapper functions
+ * (except for ioctl, which doesn't have a wrapper function). Within
+ * each section, the corresponding DWC_otg PCD function name is
+ * specified.
+ *
+ */
+
+/**
+ *Gets the USB Frame number of the last SOF.
+ */
+static int dwc_otg_pcd_get_frame(struct usb_gadget *gadget)
+{
+ dwc_otg_pcd_t *pcd;
+
+ DWC_DEBUGPL(DBG_PCDV,"%s(%p)\n", __func__, gadget);
+
+ if (gadget == 0) {
+ return -ENODEV;
+ }
+ else {
+ pcd = container_of(gadget, dwc_otg_pcd_t, gadget);
+ dwc_otg_get_frame_number(GET_CORE_IF(pcd));
+ }
+
+ return 0;
+}
+
+void dwc_otg_pcd_initiate_srp(dwc_otg_pcd_t *pcd)
+{
+ uint32_t *addr = (uint32_t *)&(GET_CORE_IF(pcd)->core_global_regs->gotgctl);
+ gotgctl_data_t mem;
+ gotgctl_data_t val;
+
+ val.d32 = dwc_read_reg32(addr);
+ if (val.b.sesreq) {
+ DWC_ERROR("Session Request Already active!\n");
+ return;
+ }
+
+ DWC_NOTICE("Session Request Initated\n");
+ mem.d32 = dwc_read_reg32(addr);
+ mem.b.sesreq = 1;
+ dwc_write_reg32(addr, mem.d32);
+
+ /* Start the SRP timer */
+ dwc_otg_pcd_start_srp_timer(pcd);
+ return;
+}
+
+void dwc_otg_pcd_remote_wakeup(dwc_otg_pcd_t *pcd, int set)
+{
+ dctl_data_t dctl = {.d32=0};
+ volatile uint32_t *addr = &(GET_CORE_IF(pcd)->dev_if->dev_global_regs->dctl);
+
+ if (dwc_otg_is_device_mode(GET_CORE_IF(pcd))) {
+ if (pcd->remote_wakeup_enable) {
+ if (set) {
+ dctl.b.rmtwkupsig = 1;
+ dwc_modify_reg32(addr, 0, dctl.d32);
+ DWC_DEBUGPL(DBG_PCD, "Set Remote Wakeup\n");
+ mdelay(1);
+ dwc_modify_reg32(addr, dctl.d32, 0);
+ DWC_DEBUGPL(DBG_PCD, "Clear Remote Wakeup\n");
+ }
+ else {
+ }
+ }
+ else {
+ DWC_DEBUGPL(DBG_PCD, "Remote Wakeup is disabled\n");
+ }
+ }
+ return;
+}
+
+/**
+ * Initiates Session Request Protocol (SRP) to wakeup the host if no
+ * session is in progress. If a session is already in progress, but
+ * the device is suspended, remote wakeup signaling is started.
+ *
+ */
+static int dwc_otg_pcd_wakeup(struct usb_gadget *gadget)
+{
+ unsigned long flags;
+ dwc_otg_pcd_t *pcd;
+ dsts_data_t dsts;
+ gotgctl_data_t gotgctl;
+
+ DWC_DEBUGPL(DBG_PCDV,"%s(%p)\n", __func__, gadget);
+
+ if (gadget == 0) {
+ return -ENODEV;
+ }
+ else {
+ pcd = container_of(gadget, dwc_otg_pcd_t, gadget);
+ }
+ SPIN_LOCK_IRQSAVE(&pcd->lock, flags);
+
+ /*
+ * This function starts the Protocol if no session is in progress. If
+ * a session is already in progress, but the device is suspended,
+ * remote wakeup signaling is started.
+ */
+
+ /* Check if valid session */
+ gotgctl.d32 = dwc_read_reg32(&(GET_CORE_IF(pcd)->core_global_regs->gotgctl));
+ if (gotgctl.b.bsesvld) {
+ /* Check if suspend state */
+ dsts.d32 = dwc_read_reg32(&(GET_CORE_IF(pcd)->dev_if->dev_global_regs->dsts));
+ if (dsts.b.suspsts) {
+ dwc_otg_pcd_remote_wakeup(pcd, 1);
+ }
+ }
+ else {
+ dwc_otg_pcd_initiate_srp(pcd);
+ }
+
+ SPIN_UNLOCK_IRQRESTORE(&pcd->lock, flags);
+ return 0;
+}
+
+static const struct usb_gadget_ops dwc_otg_pcd_ops =
+{
+ .get_frame = dwc_otg_pcd_get_frame,
+ .wakeup = dwc_otg_pcd_wakeup,
+ // current versions must always be self-powered
+};
+
+/**
+ * This function updates the otg values in the gadget structure.
+ */
+void dwc_otg_pcd_update_otg(dwc_otg_pcd_t *pcd, const unsigned reset)
+{
+
+ if (!pcd->gadget.is_otg)
+ return;
+
+ if (reset) {
+ pcd->b_hnp_enable = 0;
+ pcd->a_hnp_support = 0;
+ pcd->a_alt_hnp_support = 0;
+ }
+
+ pcd->gadget.b_hnp_enable = pcd->b_hnp_enable;
+ pcd->gadget.a_hnp_support = pcd->a_hnp_support;
+ pcd->gadget.a_alt_hnp_support = pcd->a_alt_hnp_support;
+}
+
+/**
+ * This function is the top level PCD interrupt handler.
+ */
+static irqreturn_t dwc_otg_pcd_irq(int irq, void *dev
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+ , struct pt_regs *r
+#endif
+ )
+{
+ dwc_otg_pcd_t *pcd = dev;
+ int32_t retval = IRQ_NONE;
+
+ retval = dwc_otg_pcd_handle_intr(pcd);
+ return IRQ_RETVAL(retval);
+}
+
+/**
+ * PCD Callback function for initializing the PCD when switching to
+ * device mode.
+ *
+ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
+ */
+static int32_t dwc_otg_pcd_start_cb(void *p)
+{
+ dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *)p;
+
+ /*
+ * Initialized the Core for Device mode.
+ */
+ if (dwc_otg_is_device_mode(GET_CORE_IF(pcd))) {
+ dwc_otg_core_dev_init(GET_CORE_IF(pcd));
+ }
+ return 1;
+}
+
+/**
+ * PCD Callback function for stopping the PCD when switching to Host
+ * mode.
+ *
+ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
+ */
+static int32_t dwc_otg_pcd_stop_cb(void *p)
+{
+ dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *)p;
+ extern void dwc_otg_pcd_stop(dwc_otg_pcd_t *_pcd);
+
+ dwc_otg_pcd_stop(pcd);
+ return 1;
+}
+
+
+/**
+ * PCD Callback function for notifying the PCD when resuming from
+ * suspend.
+ *
+ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
+ */
+static int32_t dwc_otg_pcd_suspend_cb(void *p)
+{
+ dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *)p;
+
+ if (pcd->driver && pcd->driver->resume) {
+ SPIN_UNLOCK(&pcd->lock);
+ pcd->driver->suspend(&pcd->gadget);
+ SPIN_LOCK(&pcd->lock);
+ }
+
+ return 1;
+}
+
+
+/**
+ * PCD Callback function for notifying the PCD when resuming from
+ * suspend.
+ *
+ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
+ */
+static int32_t dwc_otg_pcd_resume_cb(void *p)
+{
+ dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *)p;
+
+ if (pcd->driver && pcd->driver->resume) {
+ SPIN_UNLOCK(&pcd->lock);
+ pcd->driver->resume(&pcd->gadget);
+ SPIN_LOCK(&pcd->lock);
+ }
+
+ /* Stop the SRP timeout timer. */
+ if ((GET_CORE_IF(pcd)->core_params->phy_type != DWC_PHY_TYPE_PARAM_FS) ||
+ (!GET_CORE_IF(pcd)->core_params->i2c_enable)) {
+ if (GET_CORE_IF(pcd)->srp_timer_started) {
+ GET_CORE_IF(pcd)->srp_timer_started = 0;
+ del_timer(&pcd->srp_timer);
+ }
+ }
+ return 1;
+}
+
+
+/**
+ * PCD Callback structure for handling mode switching.
+ */
+static dwc_otg_cil_callbacks_t pcd_callbacks =
+{
+ .start = dwc_otg_pcd_start_cb,
+ .stop = dwc_otg_pcd_stop_cb,
+ .suspend = dwc_otg_pcd_suspend_cb,
+ .resume_wakeup = dwc_otg_pcd_resume_cb,
+ .p = 0, /* Set at registration */
+};
+
+/**
+ * This function is called when the SRP timer expires. The SRP should
+ * complete within 6 seconds.
+ */
+static void srp_timeout(unsigned long ptr)
+{
+ gotgctl_data_t gotgctl;
+ dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *)ptr;
+ volatile uint32_t *addr = &core_if->core_global_regs->gotgctl;
+
+ gotgctl.d32 = dwc_read_reg32(addr);
+
+ core_if->srp_timer_started = 0;
+
+ if ((core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS) &&
+ (core_if->core_params->i2c_enable)) {
+ DWC_PRINT("SRP Timeout\n");
+
+ if ((core_if->srp_success) &&
+ (gotgctl.b.bsesvld)) {
+ if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
+ core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
+ }
+
+ /* Clear Session Request */
+ gotgctl.d32 = 0;
+ gotgctl.b.sesreq = 1;
+ dwc_modify_reg32(&core_if->core_global_regs->gotgctl,
+ gotgctl.d32, 0);
+
+ core_if->srp_success = 0;
+ }
+ else {
+ DWC_ERROR("Device not connected/responding\n");
+ gotgctl.b.sesreq = 0;
+ dwc_write_reg32(addr, gotgctl.d32);
+ }
+ }
+ else if (gotgctl.b.sesreq) {
+ DWC_PRINT("SRP Timeout\n");
+
+ DWC_ERROR("Device not connected/responding\n");
+ gotgctl.b.sesreq = 0;
+ dwc_write_reg32(addr, gotgctl.d32);
+ }
+ else {
+ DWC_PRINT(" SRP GOTGCTL=%0x\n", gotgctl.d32);
+ }
+}
+
+/**
+ * Start the SRP timer to detect when the SRP does not complete within
+ * 6 seconds.
+ *
+ * @param pcd the pcd structure.
+ */
+void dwc_otg_pcd_start_srp_timer(dwc_otg_pcd_t *pcd)
+{
+ struct timer_list *srp_timer = &pcd->srp_timer;
+ GET_CORE_IF(pcd)->srp_timer_started = 1;
+ init_timer(srp_timer);
+ srp_timer->function = srp_timeout;
+ srp_timer->data = (unsigned long)GET_CORE_IF(pcd);
+ srp_timer->expires = jiffies + (HZ*6);
+ add_timer(srp_timer);
+}
+
+/**
+ * Tasklet
+ *
+ */
+extern void start_next_request(dwc_otg_pcd_ep_t *ep);
+
+static void start_xfer_tasklet_func (unsigned long data)
+{
+ dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t*)data;
+ dwc_otg_core_if_t *core_if = pcd->otg_dev->core_if;
+
+ int i;
+ depctl_data_t diepctl;
+
+ DWC_DEBUGPL(DBG_PCDV, "Start xfer tasklet\n");
+
+ diepctl.d32 = dwc_read_reg32(&core_if->dev_if->in_ep_regs[0]->diepctl);
+
+ if (pcd->ep0.queue_sof) {
+ pcd->ep0.queue_sof = 0;
+ start_next_request (&pcd->ep0);
+ // break;
+ }
+
+ for (i=0; i<core_if->dev_if->num_in_eps; i++)
+ {
+ depctl_data_t diepctl;
+ diepctl.d32 = dwc_read_reg32(&core_if->dev_if->in_ep_regs[i]->diepctl);
+
+ if (pcd->in_ep[i].queue_sof) {
+ pcd->in_ep[i].queue_sof = 0;
+ start_next_request (&pcd->in_ep[i]);
+ // break;
+ }
+ }
+
+ return;
+}
+
+
+
+
+
+
+
+static struct tasklet_struct start_xfer_tasklet = {
+ .next = NULL,
+ .state = 0,
+ .count = ATOMIC_INIT(0),
+ .func = start_xfer_tasklet_func,
+ .data = 0,
+};
+/**
+ * This function initialized the pcd Dp structures to there default
+ * state.
+ *
+ * @param pcd the pcd structure.
+ */
+void dwc_otg_pcd_reinit(dwc_otg_pcd_t *pcd)
+{
+ static const char * names[] =
+ {
+
+ "ep0",
+ "ep1in",
+ "ep2in",
+ "ep3in",
+ "ep4in",
+ "ep5in",
+ "ep6in",
+ "ep7in",
+ "ep8in",
+ "ep9in",
+ "ep10in",
+ "ep11in",
+ "ep12in",
+ "ep13in",
+ "ep14in",
+ "ep15in",
+ "ep1out",
+ "ep2out",
+ "ep3out",
+ "ep4out",
+ "ep5out",
+ "ep6out",
+ "ep7out",
+ "ep8out",
+ "ep9out",
+ "ep10out",
+ "ep11out",
+ "ep12out",
+ "ep13out",
+ "ep14out",
+ "ep15out"
+
+ };
+
+ int i;
+ int in_ep_cntr, out_ep_cntr;
+ uint32_t hwcfg1;
+ uint32_t num_in_eps = (GET_CORE_IF(pcd))->dev_if->num_in_eps;
+ uint32_t num_out_eps = (GET_CORE_IF(pcd))->dev_if->num_out_eps;
+ dwc_otg_pcd_ep_t *ep;
+
+ DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, pcd);
+
+ INIT_LIST_HEAD (&pcd->gadget.ep_list);
+ pcd->gadget.ep0 = &pcd->ep0.ep;
+ pcd->gadget.speed = USB_SPEED_UNKNOWN;
+
+ INIT_LIST_HEAD (&pcd->gadget.ep0->ep_list);
+
+ /**
+ * Initialize the EP0 structure.
+ */
+ ep = &pcd->ep0;
+
+ /* Init EP structure */
+ ep->desc = 0;
+ ep->pcd = pcd;
+ ep->stopped = 1;
+
+ /* Init DWC ep structure */
+ ep->dwc_ep.num = 0;
+ ep->dwc_ep.active = 0;
+ ep->dwc_ep.tx_fifo_num = 0;
+ /* Control until ep is actvated */
+ ep->dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL;
+ ep->dwc_ep.maxpacket = MAX_PACKET_SIZE;
+ ep->dwc_ep.dma_addr = 0;
+ ep->dwc_ep.start_xfer_buff = 0;
+ ep->dwc_ep.xfer_buff = 0;
+ ep->dwc_ep.xfer_len = 0;
+ ep->dwc_ep.xfer_count = 0;
+ ep->dwc_ep.sent_zlp = 0;
+ ep->dwc_ep.total_len = 0;
+ ep->queue_sof = 0;
+ ep->dwc_ep.desc_addr = 0;
+ ep->dwc_ep.dma_desc_addr = 0;
+
+
+ /* Init the usb_ep structure. */
+ ep->ep.name = names[0];
+ ep->ep.ops = (struct usb_ep_ops*)&dwc_otg_pcd_ep_ops;
+
+ /**
+ * @todo NGS: What should the max packet size be set to
+ * here? Before EP type is set?
+ */
+ ep->ep.maxpacket = MAX_PACKET_SIZE;
+
+ list_add_tail (&ep->ep.ep_list, &pcd->gadget.ep_list);
+
+ INIT_LIST_HEAD (&ep->queue);
+ /**
+ * Initialize the EP structures.
+ */
+ in_ep_cntr = 0;
+ hwcfg1 = (GET_CORE_IF(pcd))->hwcfg1.d32 >> 3;
+
+ for (i = 1; in_ep_cntr < num_in_eps; i++)
+ {
+ if((hwcfg1 & 0x1) == 0) {
+ dwc_otg_pcd_ep_t *ep = &pcd->in_ep[in_ep_cntr];
+ in_ep_cntr ++;
+
+ /* Init EP structure */
+ ep->desc = 0;
+ ep->pcd = pcd;
+ ep->stopped = 1;
+
+ /* Init DWC ep structure */
+ ep->dwc_ep.is_in = 1;
+ ep->dwc_ep.num = i;
+ ep->dwc_ep.active = 0;
+ ep->dwc_ep.tx_fifo_num = 0;
+
+ /* Control until ep is actvated */
+ ep->dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL;
+ ep->dwc_ep.maxpacket = MAX_PACKET_SIZE;
+ ep->dwc_ep.dma_addr = 0;
+ ep->dwc_ep.start_xfer_buff = 0;
+ ep->dwc_ep.xfer_buff = 0;
+ ep->dwc_ep.xfer_len = 0;
+ ep->dwc_ep.xfer_count = 0;
+ ep->dwc_ep.sent_zlp = 0;
+ ep->dwc_ep.total_len = 0;
+ ep->queue_sof = 0;
+ ep->dwc_ep.desc_addr = 0;
+ ep->dwc_ep.dma_desc_addr = 0;
+
+ /* Init the usb_ep structure. */
+ ep->ep.name = names[i];
+ ep->ep.ops = (struct usb_ep_ops*)&dwc_otg_pcd_ep_ops;
+
+ /**
+ * @todo NGS: What should the max packet size be set to
+ * here? Before EP type is set?
+ */
+ ep->ep.maxpacket = MAX_PACKET_SIZE;
+
+ list_add_tail (&ep->ep.ep_list, &pcd->gadget.ep_list);
+
+ INIT_LIST_HEAD (&ep->queue);
+ }
+ hwcfg1 >>= 2;
+ }
+
+ out_ep_cntr = 0;
+ hwcfg1 = (GET_CORE_IF(pcd))->hwcfg1.d32 >> 2;
+
+ for (i = 1; out_ep_cntr < num_out_eps; i++)
+ {
+ if((hwcfg1 & 0x1) == 0) {
+ dwc_otg_pcd_ep_t *ep = &pcd->out_ep[out_ep_cntr];
+ out_ep_cntr++;
+
+ /* Init EP structure */
+ ep->desc = 0;
+ ep->pcd = pcd;
+ ep->stopped = 1;
+
+ /* Init DWC ep structure */
+ ep->dwc_ep.is_in = 0;
+ ep->dwc_ep.num = i;
+ ep->dwc_ep.active = 0;
+ ep->dwc_ep.tx_fifo_num = 0;
+ /* Control until ep is actvated */
+ ep->dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL;
+ ep->dwc_ep.maxpacket = MAX_PACKET_SIZE;
+ ep->dwc_ep.dma_addr = 0;
+ ep->dwc_ep.start_xfer_buff = 0;
+ ep->dwc_ep.xfer_buff = 0;
+ ep->dwc_ep.xfer_len = 0;
+ ep->dwc_ep.xfer_count = 0;
+ ep->dwc_ep.sent_zlp = 0;
+ ep->dwc_ep.total_len = 0;
+ ep->queue_sof = 0;
+
+ /* Init the usb_ep structure. */
+ ep->ep.name = names[15 + i];
+ ep->ep.ops = (struct usb_ep_ops*)&dwc_otg_pcd_ep_ops;
+ /**
+ * @todo NGS: What should the max packet size be set to
+ * here? Before EP type is set?
+ */
+ ep->ep.maxpacket = MAX_PACKET_SIZE;
+
+ list_add_tail (&ep->ep.ep_list, &pcd->gadget.ep_list);
+
+ INIT_LIST_HEAD (&ep->queue);
+ }
+ hwcfg1 >>= 2;
+ }
+
+ /* remove ep0 from the list. There is a ep0 pointer.*/
+ list_del_init (&pcd->ep0.ep.ep_list);
+
+ pcd->ep0state = EP0_DISCONNECT;
+ pcd->ep0.ep.maxpacket = MAX_EP0_SIZE;
+ pcd->ep0.dwc_ep.maxpacket = MAX_EP0_SIZE;
+ pcd->ep0.dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL;
+}
+
+/**
+ * This function releases the Gadget device.
+ * required by device_unregister().
+ *
+ * @todo Should this do something? Should it free the PCD?
+ */
+static void dwc_otg_pcd_gadget_release(struct device *dev)
+{
+ DWC_DEBUGPL(DBG_PCDV,"%s(%p)\n", __func__, dev);
+}
+
+
+
+/**
+ * This function initialized the PCD portion of the driver.
+ *
+ */
+
+int dwc_otg_pcd_init(struct device *dev)
+{
+ static char pcd_name[] = "dwc_otg_pcd";
+ dwc_otg_pcd_t *pcd;
+ dwc_otg_core_if_t* core_if;
+ dwc_otg_dev_if_t* dev_if;
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(dev);
+ int retval = 0;
+
+
+ DWC_DEBUGPL(DBG_PCDV,"%s(%p)\n",__func__, dev);
+ /*
+ * Allocate PCD structure
+ */
+ pcd = kmalloc(sizeof(dwc_otg_pcd_t), GFP_KERNEL);
+
+ if (pcd == 0) {
+ return -ENOMEM;
+ }
+
+ memset(pcd, 0, sizeof(dwc_otg_pcd_t));
+ spin_lock_init(&pcd->lock);
+
+ otg_dev->pcd = pcd;
+ s_pcd = pcd;
+ pcd->gadget.name = pcd_name;
+ strcpy(pcd->gadget.dev.bus_id, "gadget");
+
+ pcd->otg_dev = dev_get_drvdata(dev);
+
+ pcd->gadget.dev.parent = dev;
+ pcd->gadget.dev.release = dwc_otg_pcd_gadget_release;
+ pcd->gadget.ops = &dwc_otg_pcd_ops;
+
+ core_if = GET_CORE_IF(pcd);
+ dev_if = core_if->dev_if;
+
+ if(core_if->hwcfg4.b.ded_fifo_en) {
+ DWC_PRINT("Dedicated Tx FIFOs mode\n");
+ }
+ else {
+ DWC_PRINT("Shared Tx FIFO mode\n");
+ }
+
+ /* If the module is set to FS or if the PHY_TYPE is FS then the gadget
+ * should not report as dual-speed capable. replace the following line
+ * with the block of code below it once the software is debugged for
+ * this. If is_dualspeed = 0 then the gadget driver should not report
+ * a device qualifier descriptor when queried. */
+ if ((GET_CORE_IF(pcd)->core_params->speed == DWC_SPEED_PARAM_FULL) ||
+ ((GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type == 2) &&
+ (GET_CORE_IF(pcd)->hwcfg2.b.fs_phy_type == 1) &&
+ (GET_CORE_IF(pcd)->core_params->ulpi_fs_ls))) {
+ pcd->gadget.is_dualspeed = 0;
+ }
+ else {
+ pcd->gadget.is_dualspeed = 1;
+ }
+
+ if ((otg_dev->core_if->hwcfg2.b.op_mode == DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE) ||
+ (otg_dev->core_if->hwcfg2.b.op_mode == DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST) ||
+ (otg_dev->core_if->hwcfg2.b.op_mode == DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE) ||
+ (otg_dev->core_if->hwcfg2.b.op_mode == DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)) {
+ pcd->gadget.is_otg = 0;
+ }
+ else {
+ pcd->gadget.is_otg = 1;
+ }
+
+
+ pcd->driver = 0;
+ /* Register the gadget device */
+ retval = device_register(&pcd->gadget.dev);
+ if (retval != 0) {
+ kfree (pcd);
+ return retval;
+ }
+
+
+ /*
+ * Initialized the Core for Device mode.
+ */
+ if (dwc_otg_is_device_mode(core_if)) {
+ dwc_otg_core_dev_init(core_if);
+ }
+
+ /*
+ * Initialize EP structures
+ */
+ dwc_otg_pcd_reinit(pcd);
+
+ /*
+ * Register the PCD Callbacks.
+ */
+ dwc_otg_cil_register_pcd_callbacks(otg_dev->core_if, &pcd_callbacks,
+ pcd);
+ /*
+ * Setup interupt handler
+ */
+ DWC_DEBUGPL(DBG_ANY, "registering handler for irq%d\n", otg_dev->irq);
+ retval = request_irq(otg_dev->irq, dwc_otg_pcd_irq,
+ SA_SHIRQ, pcd->gadget.name, pcd);
+ if (retval != 0) {
+ DWC_ERROR("request of irq%d failed\n", otg_dev->irq);
+ device_unregister(&pcd->gadget.dev);
+ kfree (pcd);
+ return -EBUSY;
+ }
+
+ /*
+ * Initialize the DMA buffer for SETUP packets
+ */
+ if (GET_CORE_IF(pcd)->dma_enable) {
+ pcd->setup_pkt = dma_alloc_coherent (NULL, sizeof (*pcd->setup_pkt) * 5, &pcd->setup_pkt_dma_handle, 0);
+ if (pcd->setup_pkt == 0) {
+ free_irq(otg_dev->irq, pcd);
+ device_unregister(&pcd->gadget.dev);
+ kfree (pcd);
+ return -ENOMEM;
+ }
+
+ pcd->status_buf = dma_alloc_coherent (NULL, sizeof (uint16_t), &pcd->status_buf_dma_handle, 0);
+ if (pcd->status_buf == 0) {
+ dma_free_coherent(NULL, sizeof(*pcd->setup_pkt), pcd->setup_pkt, pcd->setup_pkt_dma_handle);
+ free_irq(otg_dev->irq, pcd);
+ device_unregister(&pcd->gadget.dev);
+ kfree (pcd);
+ return -ENOMEM;
+ }
+
+ if (GET_CORE_IF(pcd)->dma_desc_enable) {
+ dev_if->setup_desc_addr[0] = dwc_otg_ep_alloc_desc_chain(&dev_if->dma_setup_desc_addr[0], 1);
+ dev_if->setup_desc_addr[1] = dwc_otg_ep_alloc_desc_chain(&dev_if->dma_setup_desc_addr[1], 1);
+ dev_if->in_desc_addr = dwc_otg_ep_alloc_desc_chain(&dev_if->dma_in_desc_addr, 1);
+ dev_if->out_desc_addr = dwc_otg_ep_alloc_desc_chain(&dev_if->dma_out_desc_addr, 1);
+
+ if(dev_if->setup_desc_addr[0] == 0
+ || dev_if->setup_desc_addr[1] == 0
+ || dev_if->in_desc_addr == 0
+ || dev_if->out_desc_addr == 0 ) {
+
+ if(dev_if->out_desc_addr)
+ dwc_otg_ep_free_desc_chain(dev_if->out_desc_addr, dev_if->dma_out_desc_addr, 1);
+ if(dev_if->in_desc_addr)
+ dwc_otg_ep_free_desc_chain(dev_if->in_desc_addr, dev_if->dma_in_desc_addr, 1);
+ if(dev_if->setup_desc_addr[1])
+ dwc_otg_ep_free_desc_chain(dev_if->setup_desc_addr[1], dev_if->dma_setup_desc_addr[1], 1);
+ if(dev_if->setup_desc_addr[0])
+ dwc_otg_ep_free_desc_chain(dev_if->setup_desc_addr[0], dev_if->dma_setup_desc_addr[0], 1);
+
+
+ dma_free_coherent(NULL, sizeof(*pcd->status_buf), pcd->status_buf, pcd->setup_pkt_dma_handle);
+ dma_free_coherent(NULL, sizeof(*pcd->setup_pkt), pcd->setup_pkt, pcd->setup_pkt_dma_handle);
+
+ free_irq(otg_dev->irq, pcd);
+ device_unregister(&pcd->gadget.dev);
+ kfree (pcd);
+
+ return -ENOMEM;
+ }
+ }
+ }
+ else {
+ pcd->setup_pkt = kmalloc (sizeof (*pcd->setup_pkt) * 5, GFP_KERNEL);
+ if (pcd->setup_pkt == 0) {
+ free_irq(otg_dev->irq, pcd);
+ device_unregister(&pcd->gadget.dev);
+ kfree (pcd);
+ return -ENOMEM;
+ }
+
+ pcd->status_buf = kmalloc (sizeof (uint16_t), GFP_KERNEL);
+ if (pcd->status_buf == 0) {
+ kfree(pcd->setup_pkt);
+ free_irq(otg_dev->irq, pcd);
+ device_unregister(&pcd->gadget.dev);
+ kfree (pcd);
+ return -ENOMEM;
+ }
+ }
+
+
+ /* Initialize tasklet */
+ start_xfer_tasklet.data = (unsigned long)pcd;
+ pcd->start_xfer_tasklet = &start_xfer_tasklet;
+
+ return 0;
+}
+
+/**
+ * Cleanup the PCD.
+ */
+void dwc_otg_pcd_remove(struct device *dev)
+{
+ dwc_otg_device_t *otg_dev = dev_get_drvdata(dev);
+ dwc_otg_pcd_t *pcd = otg_dev->pcd;
+ dwc_otg_dev_if_t* dev_if = GET_CORE_IF(pcd)->dev_if;
+
+ DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, dev);
+
+ /*
+ * Free the IRQ
+ */
+ free_irq(otg_dev->irq, pcd);
+
+ /* start with the driver above us */
+ if (pcd->driver) {
+ /* should have been done already by driver model core */
+ DWC_WARN("driver '%s' is still registered\n",
+ pcd->driver->driver.name);
+ usb_gadget_unregister_driver(pcd->driver);
+ }
+ device_unregister(&pcd->gadget.dev);
+
+ if (GET_CORE_IF(pcd)->dma_enable) {
+ dma_free_coherent (NULL, sizeof (*pcd->setup_pkt) * 5, pcd->setup_pkt, pcd->setup_pkt_dma_handle);
+ dma_free_coherent (NULL, sizeof (uint16_t), pcd->status_buf, pcd->status_buf_dma_handle);
+ if (GET_CORE_IF(pcd)->dma_desc_enable) {
+ dwc_otg_ep_free_desc_chain(dev_if->setup_desc_addr[0], dev_if->dma_setup_desc_addr[0], 1);
+ dwc_otg_ep_free_desc_chain(dev_if->setup_desc_addr[1], dev_if->dma_setup_desc_addr[1], 1);
+ dwc_otg_ep_free_desc_chain(dev_if->in_desc_addr, dev_if->dma_in_desc_addr, 1);
+ dwc_otg_ep_free_desc_chain(dev_if->out_desc_addr, dev_if->dma_out_desc_addr, 1);
+ }
+ }
+ else {
+ kfree (pcd->setup_pkt);
+ kfree (pcd->status_buf);
+ }
+
+ kfree(pcd);
+ otg_dev->pcd = 0;
+}
+
+/**
+ * This function registers a gadget driver with the PCD.
+ *
+ * When a driver is successfully registered, it will receive control
+ * requests including set_configuration(), which enables non-control
+ * requests. then usb traffic follows until a disconnect is reported.
+ * then a host may connect again, or the driver might get unbound.
+ *
+ * @param driver The driver being registered
+ */
+int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+{
+ int retval;
+
+ DWC_DEBUGPL(DBG_PCD, "registering gadget driver '%s'\n", driver->driver.name);
+
+ if (!driver || driver->speed == USB_SPEED_UNKNOWN ||
+ !driver->bind ||
+ !driver->unbind ||
+ !driver->disconnect ||
+ !driver->setup) {
+ DWC_DEBUGPL(DBG_PCDV,"EINVAL\n");
+ return -EINVAL;
+ }
+ if (s_pcd == 0) {
+ DWC_DEBUGPL(DBG_PCDV,"ENODEV\n");
+ return -ENODEV;
+ }
+ if (s_pcd->driver != 0) {
+ DWC_DEBUGPL(DBG_PCDV,"EBUSY (%p)\n", s_pcd->driver);
+ return -EBUSY;
+ }
+
+ /* hook up the driver */
+ s_pcd->driver = driver;
+ s_pcd->gadget.dev.driver = &driver->driver;
+
+ DWC_DEBUGPL(DBG_PCD, "bind to driver %s\n", driver->driver.name);
+ retval = driver->bind(&s_pcd->gadget);
+ if (retval) {
+ DWC_ERROR("bind to driver %s --> error %d\n",
+ driver->driver.name, retval);
+ s_pcd->driver = 0;
+ s_pcd->gadget.dev.driver = 0;
+ return retval;
+ }
+ DWC_DEBUGPL(DBG_ANY, "registered gadget driver '%s'\n",
+ driver->driver.name);
+ return 0;
+}
+
+EXPORT_SYMBOL(usb_gadget_register_driver);
+
+/**
+ * This function unregisters a gadget driver
+ *
+ * @param driver The driver being unregistered
+ */
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+ //DWC_DEBUGPL(DBG_PCDV,"%s(%p)\n", __func__, _driver);
+
+ if (s_pcd == 0) {
+ DWC_DEBUGPL(DBG_ANY, "%s Return(%d): s_pcd==0\n", __func__,
+ -ENODEV);
+ return -ENODEV;
+ }
+ if (driver == 0 || driver != s_pcd->driver) {
+ DWC_DEBUGPL(DBG_ANY, "%s Return(%d): driver?\n", __func__,
+ -EINVAL);
+ return -EINVAL;
+ }
+
+ driver->unbind(&s_pcd->gadget);
+ s_pcd->driver = 0;
+
+ DWC_DEBUGPL(DBG_ANY, "unregistered driver '%s'\n",
+ driver->driver.name);
+ return 0;
+}
+EXPORT_SYMBOL(usb_gadget_unregister_driver);
+
+#endif /* DWC_HOST_ONLY */
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd.h $
+ * $Revision: 1.2 $
+ * $Date: 2008-11-21 05:39:15 $
+ * $Change: 1103515 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_HOST_ONLY
+#if !defined(__DWC_PCD_H__)
+#define __DWC_PCD_H__
+
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
+# include <linux/usb/ch9.h>
+#else
+# include <linux/usb_ch9.h>
+#endif
+
+#include <linux/usb_gadget.h>
+#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+
+struct dwc_otg_device;
+
+#include "dwc_otg_cil.h"
+
+/**
+ * @file
+ *
+ * This file contains the structures, constants, and interfaces for
+ * the Perpherial Contoller Driver (PCD).
+ *
+ * The Peripheral Controller Driver (PCD) for Linux will implement the
+ * Gadget API, so that the existing Gadget drivers can be used. For
+ * the Mass Storage Function driver the File-backed USB Storage Gadget
+ * (FBS) driver will be used. The FBS driver supports the
+ * Control-Bulk (CB), Control-Bulk-Interrupt (CBI), and Bulk-Only
+ * transports.
+ *
+ */
+
+/** Invalid DMA Address */
+#define DMA_ADDR_INVALID (~(dma_addr_t)0)
+/** Maxpacket size for EP0 */
+#define MAX_EP0_SIZE 64
+/** Maxpacket size for any EP */
+#define MAX_PACKET_SIZE 1024
+
+/** Max Transfer size for any EP */
+#define MAX_TRANSFER_SIZE 65535
+
+/** Max DMA Descriptor count for any EP */
+#define MAX_DMA_DESC_CNT 64
+
+/**
+ * Get the pointer to the core_if from the pcd pointer.
+ */
+#define GET_CORE_IF( _pcd ) (_pcd->otg_dev->core_if)
+
+/**
+ * States of EP0.
+ */
+typedef enum ep0_state
+{
+ EP0_DISCONNECT, /* no host */
+ EP0_IDLE,
+ EP0_IN_DATA_PHASE,
+ EP0_OUT_DATA_PHASE,
+ EP0_IN_STATUS_PHASE,
+ EP0_OUT_STATUS_PHASE,
+ EP0_STALL,
+} ep0state_e;
+
+/** Fordward declaration.*/
+struct dwc_otg_pcd;
+
+/** DWC_otg iso request structure.
+ *
+ */
+typedef struct usb_iso_request dwc_otg_pcd_iso_request_t;
+
+/** PCD EP structure.
+ * This structure describes an EP, there is an array of EPs in the PCD
+ * structure.
+ */
+typedef struct dwc_otg_pcd_ep
+{
+ /** USB EP data */
+ struct usb_ep ep;
+ /** USB EP Descriptor */
+ const struct usb_endpoint_descriptor *desc;
+
+ /** queue of dwc_otg_pcd_requests. */
+ struct list_head queue;
+ unsigned stopped : 1;
+ unsigned disabling : 1;
+ unsigned dma : 1;
+ unsigned queue_sof : 1;
+
+#ifdef DWC_EN_ISOC
+ /** DWC_otg Isochronous Transfer */
+ struct usb_iso_request* iso_req;
+#endif //DWC_EN_ISOC
+
+ /** DWC_otg ep data. */
+ dwc_ep_t dwc_ep;
+
+ /** Pointer to PCD */
+ struct dwc_otg_pcd *pcd;
+}dwc_otg_pcd_ep_t;
+
+
+
+/** DWC_otg PCD Structure.
+ * This structure encapsulates the data for the dwc_otg PCD.
+ */
+typedef struct dwc_otg_pcd
+{
+ /** USB gadget */
+ struct usb_gadget gadget;
+ /** USB gadget driver pointer*/
+ struct usb_gadget_driver *driver;
+ /** The DWC otg device pointer. */
+ struct dwc_otg_device *otg_dev;
+
+ /** State of EP0 */
+ ep0state_e ep0state;
+ /** EP0 Request is pending */
+ unsigned ep0_pending : 1;
+ /** Indicates when SET CONFIGURATION Request is in process */
+ unsigned request_config : 1;
+ /** The state of the Remote Wakeup Enable. */
+ unsigned remote_wakeup_enable : 1;
+ /** The state of the B-Device HNP Enable. */
+ unsigned b_hnp_enable : 1;
+ /** The state of A-Device HNP Support. */
+ unsigned a_hnp_support : 1;
+ /** The state of the A-Device Alt HNP support. */
+ unsigned a_alt_hnp_support : 1;
+ /** Count of pending Requests */
+ unsigned request_pending;
+
+ /** SETUP packet for EP0
+ * This structure is allocated as a DMA buffer on PCD initialization
+ * with enough space for up to 3 setup packets.
+ */
+ union
+ {
+ struct usb_ctrlrequest req;
+ uint32_t d32[2];
+ } *setup_pkt;
+
+ dma_addr_t setup_pkt_dma_handle;
+
+ /** 2-byte dma buffer used to return status from GET_STATUS */
+ uint16_t *status_buf;
+ dma_addr_t status_buf_dma_handle;
+
+ /** EP0 */
+ dwc_otg_pcd_ep_t ep0;
+
+ /** Array of IN EPs. */
+ dwc_otg_pcd_ep_t in_ep[ MAX_EPS_CHANNELS - 1];
+ /** Array of OUT EPs. */
+ dwc_otg_pcd_ep_t out_ep[ MAX_EPS_CHANNELS - 1];
+ /** number of valid EPs in the above array. */
+// unsigned num_eps : 4;
+ spinlock_t lock;
+ /** Timer for SRP. If it expires before SRP is successful
+ * clear the SRP. */
+ struct timer_list srp_timer;
+
+ /** Tasklet to defer starting of TEST mode transmissions until
+ * Status Phase has been completed.
+ */
+ struct tasklet_struct test_mode_tasklet;
+
+ /** Tasklet to delay starting of xfer in DMA mode */
+ struct tasklet_struct *start_xfer_tasklet;
+
+ /** The test mode to enter when the tasklet is executed. */
+ unsigned test_mode;
+
+} dwc_otg_pcd_t;
+
+
+/** DWC_otg request structure.
+ * This structure is a list of requests.
+ */
+typedef struct
+{
+ struct usb_request req; /**< USB Request. */
+ struct list_head queue; /**< queue of these requests. */
+} dwc_otg_pcd_request_t;
+
+
+extern int dwc_otg_pcd_init(struct device *dev);
+
+//extern void dwc_otg_pcd_remove( struct dwc_otg_device *_otg_dev );
+extern void dwc_otg_pcd_remove( struct device *dev);
+extern int32_t dwc_otg_pcd_handle_intr( dwc_otg_pcd_t *pcd );
+extern void dwc_otg_pcd_start_srp_timer(dwc_otg_pcd_t *pcd );
+
+extern void dwc_otg_pcd_initiate_srp(dwc_otg_pcd_t *pcd);
+extern void dwc_otg_pcd_remote_wakeup(dwc_otg_pcd_t *pcd, int set);
+
+extern void dwc_otg_iso_buffer_done(dwc_otg_pcd_ep_t *ep, dwc_otg_pcd_iso_request_t *req);
+extern void dwc_otg_request_done(dwc_otg_pcd_ep_t *_ep, dwc_otg_pcd_request_t *req,
+ int status);
+extern void dwc_otg_request_nuke(dwc_otg_pcd_ep_t *_ep);
+extern void dwc_otg_pcd_update_otg(dwc_otg_pcd_t *_pcd,
+ const unsigned reset);
+
+#endif
+#endif /* DWC_HOST_ONLY */
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd_intr.c $
+ * $Revision: 1.2 $
+ * $Date: 2008-11-21 05:39:15 $
+ * $Change: 1115682 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+#ifndef DWC_HOST_ONLY
+#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+#include <linux/version.h>
+
+#include "dwc_otg_driver.h"
+#include "dwc_otg_pcd.h"
+
+
+#define DEBUG_EP0
+
+/* request functions defined in "dwc_otg_pcd.c" */
+
+/** @file
+ * This file contains the implementation of the PCD Interrupt handlers.
+ *
+ * The PCD handles the device interrupts. Many conditions can cause a
+ * device interrupt. When an interrupt occurs, the device interrupt
+ * service routine determines the cause of the interrupt and
+ * dispatches handling to the appropriate function. These interrupt
+ * handling functions are described below.
+ * All interrupt registers are processed from LSB to MSB.
+ */
+
+
+/**
+ * This function prints the ep0 state for debug purposes.
+ */
+static inline void print_ep0_state(dwc_otg_pcd_t *pcd)
+{
+#ifdef DEBUG
+ char str[40];
+
+ switch (pcd->ep0state) {
+ case EP0_DISCONNECT:
+ strcpy(str, "EP0_DISCONNECT");
+ break;
+ case EP0_IDLE:
+ strcpy(str, "EP0_IDLE");
+ break;
+ case EP0_IN_DATA_PHASE:
+ strcpy(str, "EP0_IN_DATA_PHASE");
+ break;
+ case EP0_OUT_DATA_PHASE:
+ strcpy(str, "EP0_OUT_DATA_PHASE");
+ break;
+ case EP0_IN_STATUS_PHASE:
+ strcpy(str,"EP0_IN_STATUS_PHASE");
+ break;
+ case EP0_OUT_STATUS_PHASE:
+ strcpy(str,"EP0_OUT_STATUS_PHASE");
+ break;
+ case EP0_STALL:
+ strcpy(str,"EP0_STALL");
+ break;
+ default:
+ strcpy(str,"EP0_INVALID");
+ }
+
+ DWC_DEBUGPL(DBG_ANY, "%s(%d)\n", str, pcd->ep0state);
+#endif
+}
+
+/**
+ * This function returns pointer to in ep struct with number ep_num
+ */
+static inline dwc_otg_pcd_ep_t* get_in_ep(dwc_otg_pcd_t *pcd, uint32_t ep_num)
+{
+ int i;
+ int num_in_eps = GET_CORE_IF(pcd)->dev_if->num_in_eps;
+ if(ep_num == 0) {
+ return &pcd->ep0;
+ }
+ else {
+ for(i = 0; i < num_in_eps; ++i)
+ {
+ if(pcd->in_ep[i].dwc_ep.num == ep_num)
+ return &pcd->in_ep[i];
+ }
+ return 0;
+ }
+}
+/**
+ * This function returns pointer to out ep struct with number ep_num
+ */
+static inline dwc_otg_pcd_ep_t* get_out_ep(dwc_otg_pcd_t *pcd, uint32_t ep_num)
+{
+ int i;
+ int num_out_eps = GET_CORE_IF(pcd)->dev_if->num_out_eps;
+ if(ep_num == 0) {
+ return &pcd->ep0;
+ }
+ else {
+ for(i = 0; i < num_out_eps; ++i)
+ {
+ if(pcd->out_ep[i].dwc_ep.num == ep_num)
+ return &pcd->out_ep[i];
+ }
+ return 0;
+ }
+}
+/**
+ * This functions gets a pointer to an EP from the wIndex address
+ * value of the control request.
+ */
+static dwc_otg_pcd_ep_t *get_ep_by_addr (dwc_otg_pcd_t *pcd, u16 wIndex)
+{
+ dwc_otg_pcd_ep_t *ep;
+
+ if ((wIndex & USB_ENDPOINT_NUMBER_MASK) == 0)
+ return &pcd->ep0;
+ list_for_each_entry(ep, &pcd->gadget.ep_list, ep.ep_list)
+ {
+ u8 bEndpointAddress;
+
+ if (!ep->desc)
+ continue;
+
+ bEndpointAddress = ep->desc->bEndpointAddress;
+ if((wIndex & (USB_DIR_IN | USB_ENDPOINT_NUMBER_MASK))
+ == (bEndpointAddress & (USB_DIR_IN | USB_ENDPOINT_NUMBER_MASK)))
+ return ep;
+ }
+ return NULL;
+}
+
+/**
+ * This function checks the EP request queue, if the queue is not
+ * empty the next request is started.
+ */
+void start_next_request(dwc_otg_pcd_ep_t *ep)
+{
+ dwc_otg_pcd_request_t *req = 0;
+ uint32_t max_transfer = GET_CORE_IF(ep->pcd)->core_params->max_transfer_size;
+
+ if (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next,
+ dwc_otg_pcd_request_t, queue);
+
+ /* Setup and start the Transfer */
+ ep->dwc_ep.dma_addr = req->req.dma;
+ ep->dwc_ep.start_xfer_buff = req->req.buf;
+ ep->dwc_ep.xfer_buff = req->req.buf;
+ ep->dwc_ep.sent_zlp = 0;
+ ep->dwc_ep.total_len = req->req.length;
+ ep->dwc_ep.xfer_len = 0;
+ ep->dwc_ep.xfer_count = 0;
+
+ if(max_transfer > MAX_TRANSFER_SIZE) {
+ ep->dwc_ep.maxxfer = max_transfer - (max_transfer % ep->dwc_ep.maxpacket);
+ } else {
+ ep->dwc_ep.maxxfer = max_transfer;
+ }
+
+ if(req->req.zero) {
+ if((ep->dwc_ep.total_len % ep->dwc_ep.maxpacket == 0)
+ && (ep->dwc_ep.total_len != 0)) {
+ ep->dwc_ep.sent_zlp = 1;
+ }
+
+ }
+
+ dwc_otg_ep_start_transfer(GET_CORE_IF(ep->pcd), &ep->dwc_ep);
+ }
+}
+
+/**
+ * This function handles the SOF Interrupts. At this time the SOF
+ * Interrupt is disabled.
+ */
+int32_t dwc_otg_pcd_handle_sof_intr(dwc_otg_pcd_t *pcd)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+
+ gintsts_data_t gintsts;
+
+ DWC_DEBUGPL(DBG_PCD, "SOF\n");
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.sofintr = 1;
+ dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32);
+
+ return 1;
+}
+
+
+/**
+ * This function handles the Rx Status Queue Level Interrupt, which
+ * indicates that there is a least one packet in the Rx FIFO. The
+ * packets are moved from the FIFO to memory, where they will be
+ * processed when the Endpoint Interrupt Register indicates Transfer
+ * Complete or SETUP Phase Done.
+ *
+ * Repeat the following until the Rx Status Queue is empty:
+ * -# Read the Receive Status Pop Register (GRXSTSP) to get Packet
+ * info
+ * -# If Receive FIFO is empty then skip to step Clear the interrupt
+ * and exit
+ * -# If SETUP Packet call dwc_otg_read_setup_packet to copy the
+ * SETUP data to the buffer
+ * -# If OUT Data Packet call dwc_otg_read_packet to copy the data
+ * to the destination buffer
+ */
+int32_t dwc_otg_pcd_handle_rx_status_q_level_intr(dwc_otg_pcd_t *pcd)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+ dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
+ gintmsk_data_t gintmask = {.d32=0};
+ device_grxsts_data_t status;
+ dwc_otg_pcd_ep_t *ep;
+ gintsts_data_t gintsts;
+#ifdef DEBUG
+ static char *dpid_str[] ={ "D0", "D2", "D1", "MDATA" };
+#endif
+
+ //DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _pcd);
+ /* Disable the Rx Status Queue Level interrupt */
+ gintmask.b.rxstsqlvl= 1;
+ dwc_modify_reg32(&global_regs->gintmsk, gintmask.d32, 0);
+
+ /* Get the Status from the top of the FIFO */
+ status.d32 = dwc_read_reg32(&global_regs->grxstsp);
+
+ DWC_DEBUGPL(DBG_PCD, "EP:%d BCnt:%d DPID:%s "
+ "pktsts:%x Frame:%d(0x%0x)\n",
+ status.b.epnum, status.b.bcnt,
+ dpid_str[status.b.dpid],
+ status.b.pktsts, status.b.fn, status.b.fn);
+ /* Get pointer to EP structure */
+ ep = get_out_ep(pcd, status.b.epnum);
+
+ switch (status.b.pktsts) {
+ case DWC_DSTS_GOUT_NAK:
+ DWC_DEBUGPL(DBG_PCDV, "Global OUT NAK\n");
+ break;
+ case DWC_STS_DATA_UPDT:
+ DWC_DEBUGPL(DBG_PCDV, "OUT Data Packet\n");
+ if (status.b.bcnt && ep->dwc_ep.xfer_buff) {
+ /** @todo NGS Check for buffer overflow? */
+ dwc_otg_read_packet(core_if,
+ ep->dwc_ep.xfer_buff,
+ status.b.bcnt);
+ ep->dwc_ep.xfer_count += status.b.bcnt;
+ ep->dwc_ep.xfer_buff += status.b.bcnt;
+ }
+ break;
+ case DWC_STS_XFER_COMP:
+ DWC_DEBUGPL(DBG_PCDV, "OUT Complete\n");
+ break;
+ case DWC_DSTS_SETUP_COMP:
+#ifdef DEBUG_EP0
+ DWC_DEBUGPL(DBG_PCDV, "Setup Complete\n");
+#endif
+ break;
+case DWC_DSTS_SETUP_UPDT:
+ dwc_otg_read_setup_packet(core_if, pcd->setup_pkt->d32);
+#ifdef DEBUG_EP0
+ DWC_DEBUGPL(DBG_PCD,
+ "SETUP PKT: %02x.%02x v%04x i%04x l%04x\n",
+ pcd->setup_pkt->req.bRequestType,
+ pcd->setup_pkt->req.bRequest,
+ pcd->setup_pkt->req.wValue,
+ pcd->setup_pkt->req.wIndex,
+ pcd->setup_pkt->req.wLength);
+#endif
+ ep->dwc_ep.xfer_count += status.b.bcnt;
+ break;
+ default:
+ DWC_DEBUGPL(DBG_PCDV, "Invalid Packet Status (0x%0x)\n",
+ status.b.pktsts);
+ break;
+ }
+
+ /* Enable the Rx Status Queue Level interrupt */
+ dwc_modify_reg32(&global_regs->gintmsk, 0, gintmask.d32);
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.rxstsqlvl = 1;
+ dwc_write_reg32 (&global_regs->gintsts, gintsts.d32);
+
+ //DWC_DEBUGPL(DBG_PCDV, "EXIT: %s\n", __func__);
+ return 1;
+}
+/**
+ * This function examines the Device IN Token Learning Queue to
+ * determine the EP number of the last IN token received. This
+ * implementation is for the Mass Storage device where there are only
+ * 2 IN EPs (Control-IN and BULK-IN).
+ *
+ * The EP numbers for the first six IN Tokens are in DTKNQR1 and there
+ * are 8 EP Numbers in each of the other possible DTKNQ Registers.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ *
+ */
+static inline int get_ep_of_last_in_token(dwc_otg_core_if_t *core_if)
+{
+ dwc_otg_device_global_regs_t *dev_global_regs =
+ core_if->dev_if->dev_global_regs;
+ const uint32_t TOKEN_Q_DEPTH = core_if->hwcfg2.b.dev_token_q_depth;
+ /* Number of Token Queue Registers */
+ const int DTKNQ_REG_CNT = (TOKEN_Q_DEPTH + 7) / 8;
+ dtknq1_data_t dtknqr1;
+ uint32_t in_tkn_epnums[4];
+ int ndx = 0;
+ int i = 0;
+ volatile uint32_t *addr = &dev_global_regs->dtknqr1;
+ int epnum = 0;
+
+ //DWC_DEBUGPL(DBG_PCD,"dev_token_q_depth=%d\n",TOKEN_Q_DEPTH);
+
+
+ /* Read the DTKNQ Registers */
+ for (i = 0; i < DTKNQ_REG_CNT; i++)
+ {
+ in_tkn_epnums[ i ] = dwc_read_reg32(addr);
+ DWC_DEBUGPL(DBG_PCDV, "DTKNQR%d=0x%08x\n", i+1,
+ in_tkn_epnums[i]);
+ if (addr == &dev_global_regs->dvbusdis) {
+ addr = &dev_global_regs->dtknqr3_dthrctl;
+ }
+ else {
+ ++addr;
+ }
+
+ }
+
+ /* Copy the DTKNQR1 data to the bit field. */
+ dtknqr1.d32 = in_tkn_epnums[0];
+ /* Get the EP numbers */
+ in_tkn_epnums[0] = dtknqr1.b.epnums0_5;
+ ndx = dtknqr1.b.intknwptr - 1;
+
+ //DWC_DEBUGPL(DBG_PCDV,"ndx=%d\n",ndx);
+ if (ndx == -1) {
+ /** @todo Find a simpler way to calculate the max
+ * queue position.*/
+ int cnt = TOKEN_Q_DEPTH;
+ if (TOKEN_Q_DEPTH <= 6) {
+ cnt = TOKEN_Q_DEPTH - 1;
+ }
+ else if (TOKEN_Q_DEPTH <= 14) {
+ cnt = TOKEN_Q_DEPTH - 7;
+ }
+ else if (TOKEN_Q_DEPTH <= 22) {
+ cnt = TOKEN_Q_DEPTH - 15;
+ }
+ else {
+ cnt = TOKEN_Q_DEPTH - 23;
+ }
+ epnum = (in_tkn_epnums[ DTKNQ_REG_CNT - 1 ] >> (cnt * 4)) & 0xF;
+ }
+ else {
+ if (ndx <= 5) {
+ epnum = (in_tkn_epnums[0] >> (ndx * 4)) & 0xF;
+ }
+ else if (ndx <= 13) {
+ ndx -= 6;
+ epnum = (in_tkn_epnums[1] >> (ndx * 4)) & 0xF;
+ }
+ else if (ndx <= 21) {
+ ndx -= 14;
+ epnum = (in_tkn_epnums[2] >> (ndx * 4)) & 0xF;
+ }
+ else if (ndx <= 29) {
+ ndx -= 22;
+ epnum = (in_tkn_epnums[3] >> (ndx * 4)) & 0xF;
+ }
+ }
+ //DWC_DEBUGPL(DBG_PCD,"epnum=%d\n",epnum);
+ return epnum;
+}
+
+/**
+ * This interrupt occurs when the non-periodic Tx FIFO is half-empty.
+ * The active request is checked for the next packet to be loaded into
+ * the non-periodic Tx FIFO.
+ */
+int32_t dwc_otg_pcd_handle_np_tx_fifo_empty_intr(dwc_otg_pcd_t *pcd)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+ dwc_otg_core_global_regs_t *global_regs =
+ core_if->core_global_regs;
+ dwc_otg_dev_in_ep_regs_t *ep_regs;
+ gnptxsts_data_t txstatus = {.d32 = 0};
+ gintsts_data_t gintsts;
+
+ int epnum = 0;
+ dwc_otg_pcd_ep_t *ep = 0;
+ uint32_t len = 0;
+ int dwords;
+
+ /* Get the epnum from the IN Token Learning Queue. */
+ epnum = get_ep_of_last_in_token(core_if);
+ ep = get_in_ep(pcd, epnum);
+
+ DWC_DEBUGPL(DBG_PCD, "NP TxFifo Empty: %s(%d) \n", ep->ep.name, epnum);
+ ep_regs = core_if->dev_if->in_ep_regs[epnum];
+
+ len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
+ if (len > ep->dwc_ep.maxpacket) {
+ len = ep->dwc_ep.maxpacket;
+ }
+ dwords = (len + 3)/4;
+
+
+ /* While there is space in the queue and space in the FIFO and
+ * More data to tranfer, Write packets to the Tx FIFO */
+ txstatus.d32 = dwc_read_reg32(&global_regs->gnptxsts);
+ DWC_DEBUGPL(DBG_PCDV, "b4 GNPTXSTS=0x%08x\n",txstatus.d32);
+
+ while (txstatus.b.nptxqspcavail > 0 &&
+ txstatus.b.nptxfspcavail > dwords &&
+ ep->dwc_ep.xfer_count < ep->dwc_ep.xfer_len) {
+ /* Write the FIFO */
+ dwc_otg_ep_write_packet(core_if, &ep->dwc_ep, 0);
+ len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
+
+ if (len > ep->dwc_ep.maxpacket) {
+ len = ep->dwc_ep.maxpacket;
+ }
+
+ dwords = (len + 3)/4;
+ txstatus.d32 = dwc_read_reg32(&global_regs->gnptxsts);
+ DWC_DEBUGPL(DBG_PCDV,"GNPTXSTS=0x%08x\n",txstatus.d32);
+ }
+
+ DWC_DEBUGPL(DBG_PCDV, "GNPTXSTS=0x%08x\n",
+ dwc_read_reg32(&global_regs->gnptxsts));
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.nptxfempty = 1;
+ dwc_write_reg32 (&global_regs->gintsts, gintsts.d32);
+
+ return 1;
+}
+
+/**
+ * This function is called when dedicated Tx FIFO Empty interrupt occurs.
+ * The active request is checked for the next packet to be loaded into
+ * apropriate Tx FIFO.
+ */
+static int32_t write_empty_tx_fifo(dwc_otg_pcd_t *pcd, uint32_t epnum)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+ dwc_otg_dev_if_t* dev_if = core_if->dev_if;
+ dwc_otg_dev_in_ep_regs_t *ep_regs;
+ dtxfsts_data_t txstatus = {.d32 = 0};
+ dwc_otg_pcd_ep_t *ep = 0;
+ uint32_t len = 0;
+ int dwords;
+
+ ep = get_in_ep(pcd, epnum);
+
+ DWC_DEBUGPL(DBG_PCD, "Dedicated TxFifo Empty: %s(%d) \n", ep->ep.name, epnum);
+
+ ep_regs = core_if->dev_if->in_ep_regs[epnum];
+
+ len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
+
+ if (len > ep->dwc_ep.maxpacket) {
+ len = ep->dwc_ep.maxpacket;
+ }
+
+ dwords = (len + 3)/4;
+
+ /* While there is space in the queue and space in the FIFO and
+ * More data to tranfer, Write packets to the Tx FIFO */
+ txstatus.d32 = dwc_read_reg32(&dev_if->in_ep_regs[epnum]->dtxfsts);
+ DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n",epnum,txstatus.d32);
+
+ while (txstatus.b.txfspcavail > dwords &&
+ ep->dwc_ep.xfer_count < ep->dwc_ep.xfer_len &&
+ ep->dwc_ep.xfer_len != 0) {
+ /* Write the FIFO */
+ dwc_otg_ep_write_packet(core_if, &ep->dwc_ep, 0);
+
+ len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
+ if (len > ep->dwc_ep.maxpacket) {
+ len = ep->dwc_ep.maxpacket;
+ }
+
+ dwords = (len + 3)/4;
+ txstatus.d32 = dwc_read_reg32(&dev_if->in_ep_regs[epnum]->dtxfsts);
+ DWC_DEBUGPL(DBG_PCDV,"dtxfsts[%d]=0x%08x\n", epnum, txstatus.d32);
+ }
+
+ DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n",epnum,dwc_read_reg32(&dev_if->in_ep_regs[epnum]->dtxfsts));
+
+ return 1;
+}
+
+
+/**
+ * This function is called when the Device is disconnected. It stops
+ * any active requests and informs the Gadget driver of the
+ * disconnect.
+ */
+void dwc_otg_pcd_stop(dwc_otg_pcd_t *pcd)
+{
+ int i, num_in_eps, num_out_eps;
+ dwc_otg_pcd_ep_t *ep;
+
+ gintmsk_data_t intr_mask = {.d32 = 0};
+
+ num_in_eps = GET_CORE_IF(pcd)->dev_if->num_in_eps;
+ num_out_eps = GET_CORE_IF(pcd)->dev_if->num_out_eps;
+
+ DWC_DEBUGPL(DBG_PCDV, "%s() \n", __func__);
+ /* don't disconnect drivers more than once */
+ if (pcd->ep0state == EP0_DISCONNECT) {
+ DWC_DEBUGPL(DBG_ANY, "%s() Already Disconnected\n", __func__);
+ return;
+ }
+ pcd->ep0state = EP0_DISCONNECT;
+
+ /* Reset the OTG state. */
+ dwc_otg_pcd_update_otg(pcd, 1);
+
+ /* Disable the NP Tx Fifo Empty Interrupt. */
+ intr_mask.b.nptxfempty = 1;
+ dwc_modify_reg32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+ intr_mask.d32, 0);
+
+ /* Flush the FIFOs */
+ /**@todo NGS Flush Periodic FIFOs */
+ dwc_otg_flush_tx_fifo(GET_CORE_IF(pcd), 0x10);
+ dwc_otg_flush_rx_fifo(GET_CORE_IF(pcd));
+
+ /* prevent new request submissions, kill any outstanding requests */
+ ep = &pcd->ep0;
+ dwc_otg_request_nuke(ep);
+ /* prevent new request submissions, kill any outstanding requests */
+ for (i = 0; i < num_in_eps; i++)
+ {
+ dwc_otg_pcd_ep_t *ep = &pcd->in_ep[i];
+ dwc_otg_request_nuke(ep);
+ }
+ /* prevent new request submissions, kill any outstanding requests */
+ for (i = 0; i < num_out_eps; i++)
+ {
+ dwc_otg_pcd_ep_t *ep = &pcd->out_ep[i];
+ dwc_otg_request_nuke(ep);
+ }
+
+ /* report disconnect; the driver is already quiesced */
+ if (pcd->driver && pcd->driver->disconnect) {
+ SPIN_UNLOCK(&pcd->lock);
+ pcd->driver->disconnect(&pcd->gadget);
+ SPIN_LOCK(&pcd->lock);
+ }
+}
+
+/**
+ * This interrupt indicates that ...
+ */
+int32_t dwc_otg_pcd_handle_i2c_intr(dwc_otg_pcd_t *pcd)
+{
+ gintmsk_data_t intr_mask = { .d32 = 0};
+ gintsts_data_t gintsts;
+
+ DWC_PRINT("INTERRUPT Handler not implemented for %s\n", "i2cintr");
+ intr_mask.b.i2cintr = 1;
+ dwc_modify_reg32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+ intr_mask.d32, 0);
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.i2cintr = 1;
+ dwc_write_reg32 (&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+ gintsts.d32);
+ return 1;
+}
+
+
+/**
+ * This interrupt indicates that ...
+ */
+int32_t dwc_otg_pcd_handle_early_suspend_intr(dwc_otg_pcd_t *pcd)
+{
+ gintsts_data_t gintsts;
+#if defined(VERBOSE)
+ DWC_PRINT("Early Suspend Detected\n");
+#endif
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.erlysuspend = 1;
+ dwc_write_reg32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+ gintsts.d32);
+ return 1;
+}
+
+/**
+ * This function configures EPO to receive SETUP packets.
+ *
+ * @todo NGS: Update the comments from the HW FS.
+ *
+ * -# Program the following fields in the endpoint specific registers
+ * for Control OUT EP 0, in order to receive a setup packet
+ * - DOEPTSIZ0.Packet Count = 3 (To receive up to 3 back to back
+ * setup packets)
+ * - DOEPTSIZE0.Transfer Size = 24 Bytes (To receive up to 3 back
+ * to back setup packets)
+ * - In DMA mode, DOEPDMA0 Register with a memory address to
+ * store any setup packets received
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param pcd Programming view of the PCD.
+ */
+static inline void ep0_out_start(dwc_otg_core_if_t *core_if, dwc_otg_pcd_t *pcd)
+{
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+ deptsiz0_data_t doeptsize0 = { .d32 = 0};
+ dwc_otg_dma_desc_t* dma_desc;
+ depctl_data_t doepctl = { .d32 = 0 };
+
+#ifdef VERBOSE
+ DWC_DEBUGPL(DBG_PCDV,"%s() doepctl0=%0x\n", __func__,
+ dwc_read_reg32(&dev_if->out_ep_regs[0]->doepctl));
+#endif
+
+ doeptsize0.b.supcnt = 3;
+ doeptsize0.b.pktcnt = 1;
+ doeptsize0.b.xfersize = 8*3;
+
+
+ if (core_if->dma_enable) {
+ if (!core_if->dma_desc_enable) {
+ /** put here as for Hermes mode deptisz register should not be written */
+ dwc_write_reg32(&dev_if->out_ep_regs[0]->doeptsiz,
+ doeptsize0.d32);
+
+ /** @todo dma needs to handle multiple setup packets (up to 3) */
+ dwc_write_reg32(&dev_if->out_ep_regs[0]->doepdma,
+ pcd->setup_pkt_dma_handle);
+ } else {
+ dev_if->setup_desc_index = (dev_if->setup_desc_index + 1) & 1;
+ dma_desc = dev_if->setup_desc_addr[dev_if->setup_desc_index];
+
+ /** DMA Descriptor Setup */
+ dma_desc->status.b.bs = BS_HOST_BUSY;
+ dma_desc->status.b.l = 1;
+ dma_desc->status.b.ioc = 1;
+ dma_desc->status.b.bytes = pcd->ep0.dwc_ep.maxpacket;
+ dma_desc->buf = pcd->setup_pkt_dma_handle;
+ dma_desc->status.b.bs = BS_HOST_READY;
+
+ /** DOEPDMA0 Register write */
+ dwc_write_reg32(&dev_if->out_ep_regs[0]->doepdma, dev_if->dma_setup_desc_addr[dev_if->setup_desc_index]);
+ }
+
+ } else {
+ /** put here as for Hermes mode deptisz register should not be written */
+ dwc_write_reg32(&dev_if->out_ep_regs[0]->doeptsiz,
+ doeptsize0.d32);
+ }
+
+ /** DOEPCTL0 Register write */
+ doepctl.b.epena = 1;
+ doepctl.b.cnak = 1;
+ dwc_write_reg32(&dev_if->out_ep_regs[0]->doepctl, doepctl.d32);
+
+#ifdef VERBOSE
+ DWC_DEBUGPL(DBG_PCDV,"doepctl0=%0x\n",
+ dwc_read_reg32(&dev_if->out_ep_regs[0]->doepctl));
+ DWC_DEBUGPL(DBG_PCDV,"diepctl0=%0x\n",
+ dwc_read_reg32(&dev_if->in_ep_regs[0]->diepctl));
+#endif
+}
+
+
+/**
+ * This interrupt occurs when a USB Reset is detected. When the USB
+ * Reset Interrupt occurs the device state is set to DEFAULT and the
+ * EP0 state is set to IDLE.
+ * -# Set the NAK bit for all OUT endpoints (DOEPCTLn.SNAK = 1)
+ * -# Unmask the following interrupt bits
+ * - DAINTMSK.INEP0 = 1 (Control 0 IN endpoint)
+ * - DAINTMSK.OUTEP0 = 1 (Control 0 OUT endpoint)
+ * - DOEPMSK.SETUP = 1
+ * - DOEPMSK.XferCompl = 1
+ * - DIEPMSK.XferCompl = 1
+ * - DIEPMSK.TimeOut = 1
+ * -# Program the following fields in the endpoint specific registers
+ * for Control OUT EP 0, in order to receive a setup packet
+ * - DOEPTSIZ0.Packet Count = 3 (To receive up to 3 back to back
+ * setup packets)
+ * - DOEPTSIZE0.Transfer Size = 24 Bytes (To receive up to 3 back
+ * to back setup packets)
+ * - In DMA mode, DOEPDMA0 Register with a memory address to
+ * store any setup packets received
+ * At this point, all the required initialization, except for enabling
+ * the control 0 OUT endpoint is done, for receiving SETUP packets.
+ */
+int32_t dwc_otg_pcd_handle_usb_reset_intr(dwc_otg_pcd_t * pcd)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+ depctl_data_t doepctl = { .d32 = 0};
+
+ daint_data_t daintmsk = { .d32 = 0};
+ doepmsk_data_t doepmsk = { .d32 = 0};
+ diepmsk_data_t diepmsk = { .d32 = 0};
+
+ dcfg_data_t dcfg = { .d32=0 };
+ grstctl_t resetctl = { .d32=0 };
+ dctl_data_t dctl = {.d32=0};
+ int i = 0;
+ gintsts_data_t gintsts;
+
+ DWC_PRINT("USB RESET\n");
+#ifdef DWC_EN_ISOC
+ for(i = 1;i < 16; ++i)
+ {
+ dwc_otg_pcd_ep_t *ep;
+ dwc_ep_t *dwc_ep;
+ ep = get_in_ep(pcd,i);
+ if(ep != 0){
+ dwc_ep = &ep->dwc_ep;
+ dwc_ep->next_frame = 0xffffffff;
+ }
+ }
+#endif /* DWC_EN_ISOC */
+
+ /* reset the HNP settings */
+ dwc_otg_pcd_update_otg(pcd, 1);
+
+ /* Clear the Remote Wakeup Signalling */
+ dctl.b.rmtwkupsig = 1;
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->dctl,
+ dctl.d32, 0);
+
+ /* Set NAK for all OUT EPs */
+ doepctl.b.snak = 1;
+ for (i=0; i <= dev_if->num_out_eps; i++)
+ {
+ dwc_write_reg32(&dev_if->out_ep_regs[i]->doepctl,
+ doepctl.d32);
+ }
+
+ /* Flush the NP Tx FIFO */
+ dwc_otg_flush_tx_fifo(core_if, 0x10);
+ /* Flush the Learning Queue */
+ resetctl.b.intknqflsh = 1;
+ dwc_write_reg32(&core_if->core_global_regs->grstctl, resetctl.d32);
+
+ if(core_if->multiproc_int_enable) {
+ daintmsk.b.inep0 = 1;
+ daintmsk.b.outep0 = 1;
+ dwc_write_reg32(&dev_if->dev_global_regs->deachintmsk, daintmsk.d32);
+
+ doepmsk.b.setup = 1;
+ doepmsk.b.xfercompl = 1;
+ doepmsk.b.ahberr = 1;
+ doepmsk.b.epdisabled = 1;
+
+ if(core_if->dma_desc_enable) {
+ doepmsk.b.stsphsercvd = 1;
+ doepmsk.b.bna = 1;
+ }
+/*
+ doepmsk.b.babble = 1;
+ doepmsk.b.nyet = 1;
+
+ if(core_if->dma_enable) {
+ doepmsk.b.nak = 1;
+ }
+*/
+ dwc_write_reg32(&dev_if->dev_global_regs->doepeachintmsk[0], doepmsk.d32);
+
+ diepmsk.b.xfercompl = 1;
+ diepmsk.b.timeout = 1;
+ diepmsk.b.epdisabled = 1;
+ diepmsk.b.ahberr = 1;
+ diepmsk.b.intknepmis = 1;
+
+ if(core_if->dma_desc_enable) {
+ diepmsk.b.bna = 1;
+ }
+/*
+ if(core_if->dma_enable) {
+ diepmsk.b.nak = 1;
+ }
+*/
+ dwc_write_reg32(&dev_if->dev_global_regs->diepeachintmsk[0], diepmsk.d32);
+ } else{
+ daintmsk.b.inep0 = 1;
+ daintmsk.b.outep0 = 1;
+ dwc_write_reg32(&dev_if->dev_global_regs->daintmsk, daintmsk.d32);
+
+ doepmsk.b.setup = 1;
+ doepmsk.b.xfercompl = 1;
+ doepmsk.b.ahberr = 1;
+ doepmsk.b.epdisabled = 1;
+
+ if(core_if->dma_desc_enable) {
+ doepmsk.b.stsphsercvd = 1;
+ doepmsk.b.bna = 1;
+ }
+/*
+ doepmsk.b.babble = 1;
+ doepmsk.b.nyet = 1;
+ doepmsk.b.nak = 1;
+*/
+ dwc_write_reg32(&dev_if->dev_global_regs->doepmsk, doepmsk.d32);
+
+ diepmsk.b.xfercompl = 1;
+ diepmsk.b.timeout = 1;
+ diepmsk.b.epdisabled = 1;
+ diepmsk.b.ahberr = 1;
+ diepmsk.b.intknepmis = 1;
+
+ if(core_if->dma_desc_enable) {
+ diepmsk.b.bna = 1;
+ }
+
+// diepmsk.b.nak = 1;
+
+ dwc_write_reg32(&dev_if->dev_global_regs->diepmsk, diepmsk.d32);
+ }
+
+ /* Reset Device Address */
+ dcfg.d32 = dwc_read_reg32(&dev_if->dev_global_regs->dcfg);
+ dcfg.b.devaddr = 0;
+ dwc_write_reg32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
+
+ /* setup EP0 to receive SETUP packets */
+ ep0_out_start(core_if, pcd);
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.usbreset = 1;
+ dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32);
+
+ return 1;
+}
+
+/**
+ * Get the device speed from the device status register and convert it
+ * to USB speed constant.
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ */
+static int get_device_speed(dwc_otg_core_if_t *core_if)
+{
+ dsts_data_t dsts;
+ enum usb_device_speed speed = USB_SPEED_UNKNOWN;
+ dsts.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dsts);
+
+ switch (dsts.b.enumspd) {
+ case DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ:
+ speed = USB_SPEED_HIGH;
+ break;
+ case DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ:
+ case DWC_DSTS_ENUMSPD_FS_PHY_48MHZ:
+ speed = USB_SPEED_FULL;
+ break;
+
+ case DWC_DSTS_ENUMSPD_LS_PHY_6MHZ:
+ speed = USB_SPEED_LOW;
+ break;
+ }
+
+ return speed;
+}
+
+/**
+ * Read the device status register and set the device speed in the
+ * data structure.
+ * Set up EP0 to receive SETUP packets by calling dwc_ep0_activate.
+ */
+int32_t dwc_otg_pcd_handle_enum_done_intr(dwc_otg_pcd_t *pcd)
+{
+ dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+ gintsts_data_t gintsts;
+ gusbcfg_data_t gusbcfg;
+ dwc_otg_core_global_regs_t *global_regs =
+ GET_CORE_IF(pcd)->core_global_regs;
+ uint8_t utmi16b, utmi8b;
+ DWC_DEBUGPL(DBG_PCD, "SPEED ENUM\n");
+
+ if (GET_CORE_IF(pcd)->snpsid >= 0x4F54260A) {
+ utmi16b = 6;
+ utmi8b = 9;
+ } else {
+ utmi16b = 4;
+ utmi8b = 8;
+ }
+ dwc_otg_ep0_activate(GET_CORE_IF(pcd), &ep0->dwc_ep);
+
+#ifdef DEBUG_EP0
+ print_ep0_state(pcd);
+#endif
+
+ if (pcd->ep0state == EP0_DISCONNECT) {
+ pcd->ep0state = EP0_IDLE;
+ }
+ else if (pcd->ep0state == EP0_STALL) {
+ pcd->ep0state = EP0_IDLE;
+ }
+
+ pcd->ep0state = EP0_IDLE;
+
+ ep0->stopped = 0;
+
+ pcd->gadget.speed = get_device_speed(GET_CORE_IF(pcd));
+
+ /* Set USB turnaround time based on device speed and PHY interface. */
+ gusbcfg.d32 = dwc_read_reg32(&global_regs->gusbcfg);
+ if (pcd->gadget.speed == USB_SPEED_HIGH) {
+ if (GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type == DWC_HWCFG2_HS_PHY_TYPE_ULPI) {
+ /* ULPI interface */
+ gusbcfg.b.usbtrdtim = 9;
+ }
+ if (GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type == DWC_HWCFG2_HS_PHY_TYPE_UTMI) {
+ /* UTMI+ interface */
+ if (GET_CORE_IF(pcd)->hwcfg4.b.utmi_phy_data_width == 0) {
+ gusbcfg.b.usbtrdtim = utmi8b;
+ }
+ else if (GET_CORE_IF(pcd)->hwcfg4.b.utmi_phy_data_width == 1) {
+ gusbcfg.b.usbtrdtim = utmi16b;
+ }
+ else if (GET_CORE_IF(pcd)->core_params->phy_utmi_width == 8) {
+ gusbcfg.b.usbtrdtim = utmi8b;
+ }
+ else {
+ gusbcfg.b.usbtrdtim = utmi16b;
+ }
+ }
+ if (GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type == DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI) {
+ /* UTMI+ OR ULPI interface */
+ if (gusbcfg.b.ulpi_utmi_sel == 1) {
+ /* ULPI interface */
+ gusbcfg.b.usbtrdtim = 9;
+ }
+ else {
+ /* UTMI+ interface */
+ if (GET_CORE_IF(pcd)->core_params->phy_utmi_width == 16) {
+ gusbcfg.b.usbtrdtim = utmi16b;
+ }
+ else {
+ gusbcfg.b.usbtrdtim = utmi8b;
+ }
+ }
+ }
+ }
+ else {
+ /* Full or low speed */
+ gusbcfg.b.usbtrdtim = 9;
+ }
+ dwc_write_reg32(&global_regs->gusbcfg, gusbcfg.d32);
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.enumdone = 1;
+ dwc_write_reg32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+ gintsts.d32);
+ return 1;
+}
+
+/**
+ * This interrupt indicates that the ISO OUT Packet was dropped due to
+ * Rx FIFO full or Rx Status Queue Full. If this interrupt occurs
+ * read all the data from the Rx FIFO.
+ */
+int32_t dwc_otg_pcd_handle_isoc_out_packet_dropped_intr(dwc_otg_pcd_t *pcd)
+{
+ gintmsk_data_t intr_mask = { .d32 = 0};
+ gintsts_data_t gintsts;
+
+ DWC_PRINT("INTERRUPT Handler not implemented for %s\n",
+ "ISOC Out Dropped");
+
+ intr_mask.b.isooutdrop = 1;
+ dwc_modify_reg32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+ intr_mask.d32, 0);
+
+ /* Clear interrupt */
+
+ gintsts.d32 = 0;
+ gintsts.b.isooutdrop = 1;
+ dwc_write_reg32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+ gintsts.d32);
+
+ return 1;
+}
+
+/**
+ * This interrupt indicates the end of the portion of the micro-frame
+ * for periodic transactions. If there is a periodic transaction for
+ * the next frame, load the packets into the EP periodic Tx FIFO.
+ */
+int32_t dwc_otg_pcd_handle_end_periodic_frame_intr(dwc_otg_pcd_t *pcd)
+{
+ gintmsk_data_t intr_mask = { .d32 = 0};
+ gintsts_data_t gintsts;
+ DWC_PRINT("INTERRUPT Handler not implemented for %s\n", "EOP");
+
+ intr_mask.b.eopframe = 1;
+ dwc_modify_reg32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+ intr_mask.d32, 0);
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.eopframe = 1;
+ dwc_write_reg32(&GET_CORE_IF(pcd)->core_global_regs->gintsts, gintsts.d32);
+
+ return 1;
+}
+
+/**
+ * This interrupt indicates that EP of the packet on the top of the
+ * non-periodic Tx FIFO does not match EP of the IN Token received.
+ *
+ * The "Device IN Token Queue" Registers are read to determine the
+ * order the IN Tokens have been received. The non-periodic Tx FIFO
+ * is flushed, so it can be reloaded in the order seen in the IN Token
+ * Queue.
+ */
+int32_t dwc_otg_pcd_handle_ep_mismatch_intr(dwc_otg_core_if_t *core_if)
+{
+ gintsts_data_t gintsts;
+ DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, core_if);
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.epmismatch = 1;
+ dwc_write_reg32 (&core_if->core_global_regs->gintsts, gintsts.d32);
+
+ return 1;
+}
+
+/**
+ * This funcion stalls EP0.
+ */
+static inline void ep0_do_stall(dwc_otg_pcd_t *pcd, const int err_val)
+{
+ dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+ struct usb_ctrlrequest *ctrl = &pcd->setup_pkt->req;
+ DWC_WARN("req %02x.%02x protocol STALL; err %d\n",
+ ctrl->bRequestType, ctrl->bRequest, err_val);
+
+ ep0->dwc_ep.is_in = 1;
+ dwc_otg_ep_set_stall(pcd->otg_dev->core_if, &ep0->dwc_ep);
+ pcd->ep0.stopped = 1;
+ pcd->ep0state = EP0_IDLE;
+ ep0_out_start(GET_CORE_IF(pcd), pcd);
+}
+
+/**
+ * This functions delegates the setup command to the gadget driver.
+ */
+static inline void do_gadget_setup(dwc_otg_pcd_t *pcd,
+ struct usb_ctrlrequest * ctrl)
+{
+ int ret = 0;
+ if (pcd->driver && pcd->driver->setup) {
+ SPIN_UNLOCK(&pcd->lock);
+ ret = pcd->driver->setup(&pcd->gadget, ctrl);
+ SPIN_LOCK(&pcd->lock);
+ if (ret < 0) {
+ ep0_do_stall(pcd, ret);
+ }
+
+ /** @todo This is a g_file_storage gadget driver specific
+ * workaround: a DELAYED_STATUS result from the fsg_setup
+ * routine will result in the gadget queueing a EP0 IN status
+ * phase for a two-stage control transfer. Exactly the same as
+ * a SET_CONFIGURATION/SET_INTERFACE except that this is a class
+ * specific request. Need a generic way to know when the gadget
+ * driver will queue the status phase. Can we assume when we
+ * call the gadget driver setup() function that it will always
+ * queue and require the following flag? Need to look into
+ * this.
+ */
+
+ if (ret == 256 + 999) {
+ pcd->request_config = 1;
+ }
+ }
+}
+
+/**
+ * This function starts the Zero-Length Packet for the IN status phase
+ * of a 2 stage control transfer.
+ */
+static inline void do_setup_in_status_phase(dwc_otg_pcd_t *pcd)
+{
+ dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+ if (pcd->ep0state == EP0_STALL) {
+ return;
+ }
+
+ pcd->ep0state = EP0_IN_STATUS_PHASE;
+
+ /* Prepare for more SETUP Packets */
+ DWC_DEBUGPL(DBG_PCD, "EP0 IN ZLP\n");
+ ep0->dwc_ep.xfer_len = 0;
+ ep0->dwc_ep.xfer_count = 0;
+ ep0->dwc_ep.is_in = 1;
+ ep0->dwc_ep.dma_addr = pcd->setup_pkt_dma_handle;
+ dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), &ep0->dwc_ep);
+
+ /* Prepare for more SETUP Packets */
+// if(GET_CORE_IF(pcd)->dma_enable == 0) ep0_out_start(GET_CORE_IF(pcd), pcd);
+}
+
+/**
+ * This function starts the Zero-Length Packet for the OUT status phase
+ * of a 2 stage control transfer.
+ */
+static inline void do_setup_out_status_phase(dwc_otg_pcd_t *pcd)
+{
+ dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+ if (pcd->ep0state == EP0_STALL) {
+ DWC_DEBUGPL(DBG_PCD, "EP0 STALLED\n");
+ return;
+ }
+ pcd->ep0state = EP0_OUT_STATUS_PHASE;
+
+ DWC_DEBUGPL(DBG_PCD, "EP0 OUT ZLP\n");
+ ep0->dwc_ep.xfer_len = 0;
+ ep0->dwc_ep.xfer_count = 0;
+ ep0->dwc_ep.is_in = 0;
+ ep0->dwc_ep.dma_addr = pcd->setup_pkt_dma_handle;
+ dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), &ep0->dwc_ep);
+
+ /* Prepare for more SETUP Packets */
+ if(GET_CORE_IF(pcd)->dma_enable == 0) {
+ ep0_out_start(GET_CORE_IF(pcd), pcd);
+ }
+}
+
+/**
+ * Clear the EP halt (STALL) and if pending requests start the
+ * transfer.
+ */
+static inline void pcd_clear_halt(dwc_otg_pcd_t *pcd, dwc_otg_pcd_ep_t *ep)
+{
+ if(ep->dwc_ep.stall_clear_flag == 0)
+ dwc_otg_ep_clear_stall(GET_CORE_IF(pcd), &ep->dwc_ep);
+
+ /* Reactive the EP */
+ dwc_otg_ep_activate(GET_CORE_IF(pcd), &ep->dwc_ep);
+ if (ep->stopped) {
+ ep->stopped = 0;
+ /* If there is a request in the EP queue start it */
+
+ /** @todo FIXME: this causes an EP mismatch in DMA mode.
+ * epmismatch not yet implemented. */
+
+ /*
+ * Above fixme is solved by implmenting a tasklet to call the
+ * start_next_request(), outside of interrupt context at some
+ * time after the current time, after a clear-halt setup packet.
+ * Still need to implement ep mismatch in the future if a gadget
+ * ever uses more than one endpoint at once
+ */
+ ep->queue_sof = 1;
+ tasklet_schedule (pcd->start_xfer_tasklet);
+ }
+ /* Start Control Status Phase */
+ do_setup_in_status_phase(pcd);
+}
+
+/**
+ * This function is called when the SET_FEATURE TEST_MODE Setup packet
+ * is sent from the host. The Device Control register is written with
+ * the Test Mode bits set to the specified Test Mode. This is done as
+ * a tasklet so that the "Status" phase of the control transfer
+ * completes before transmitting the TEST packets.
+ *
+ * @todo This has not been tested since the tasklet struct was put
+ * into the PCD struct!
+ *
+ */
+static void do_test_mode(unsigned long data)
+{
+ dctl_data_t dctl;
+ dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *)data;
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+ int test_mode = pcd->test_mode;
+
+
+// DWC_WARN("%s() has not been tested since being rewritten!\n", __func__);
+
+ dctl.d32 = dwc_read_reg32(&core_if->dev_if->dev_global_regs->dctl);
+ switch (test_mode) {
+ case 1: // TEST_J
+ dctl.b.tstctl = 1;
+ break;
+
+ case 2: // TEST_K
+ dctl.b.tstctl = 2;
+ break;
+
+ case 3: // TEST_SE0_NAK
+ dctl.b.tstctl = 3;
+ break;
+
+ case 4: // TEST_PACKET
+ dctl.b.tstctl = 4;
+ break;
+
+ case 5: // TEST_FORCE_ENABLE
+ dctl.b.tstctl = 5;
+ break;
+ }
+ dwc_write_reg32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32);
+}
+
+/**
+ * This function process the GET_STATUS Setup Commands.
+ */
+static inline void do_get_status(dwc_otg_pcd_t *pcd)
+{
+ struct usb_ctrlrequest ctrl = pcd->setup_pkt->req;
+ dwc_otg_pcd_ep_t *ep;
+ dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+ uint16_t *status = pcd->status_buf;
+
+#ifdef DEBUG_EP0
+ DWC_DEBUGPL(DBG_PCD,
+ "GET_STATUS %02x.%02x v%04x i%04x l%04x\n",
+ ctrl.bRequestType, ctrl.bRequest,
+ ctrl.wValue, ctrl.wIndex, ctrl.wLength);
+#endif
+
+ switch (ctrl.bRequestType & USB_RECIP_MASK) {
+ case USB_RECIP_DEVICE:
+ *status = 0x1; /* Self powered */
+ *status |= pcd->remote_wakeup_enable << 1;
+ break;
+
+ case USB_RECIP_INTERFACE:
+ *status = 0;
+ break;
+
+ case USB_RECIP_ENDPOINT:
+ ep = get_ep_by_addr(pcd, ctrl.wIndex);
+ if (ep == 0 || ctrl.wLength > 2) {
+ ep0_do_stall(pcd, -EOPNOTSUPP);
+ return;
+ }
+ /** @todo check for EP stall */
+ *status = ep->stopped;
+ break;
+ }
+ pcd->ep0_pending = 1;
+ ep0->dwc_ep.start_xfer_buff = (uint8_t *)status;
+ ep0->dwc_ep.xfer_buff = (uint8_t *)status;
+ ep0->dwc_ep.dma_addr = pcd->status_buf_dma_handle;
+ ep0->dwc_ep.xfer_len = 2;
+ ep0->dwc_ep.xfer_count = 0;
+ ep0->dwc_ep.total_len = ep0->dwc_ep.xfer_len;
+ dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), &ep0->dwc_ep);
+}
+/**
+ * This function process the SET_FEATURE Setup Commands.
+ */
+static inline void do_set_feature(dwc_otg_pcd_t *pcd)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+ dwc_otg_core_global_regs_t *global_regs =
+ core_if->core_global_regs;
+ struct usb_ctrlrequest ctrl = pcd->setup_pkt->req;
+ dwc_otg_pcd_ep_t *ep = 0;
+ int32_t otg_cap_param = core_if->core_params->otg_cap;
+ gotgctl_data_t gotgctl = { .d32 = 0 };
+
+ DWC_DEBUGPL(DBG_PCD, "SET_FEATURE:%02x.%02x v%04x i%04x l%04x\n",
+ ctrl.bRequestType, ctrl.bRequest,
+ ctrl.wValue, ctrl.wIndex, ctrl.wLength);
+ DWC_DEBUGPL(DBG_PCD,"otg_cap=%d\n", otg_cap_param);
+
+
+ switch (ctrl.bRequestType & USB_RECIP_MASK) {
+ case USB_RECIP_DEVICE:
+ switch (ctrl.wValue) {
+ case USB_DEVICE_REMOTE_WAKEUP:
+ pcd->remote_wakeup_enable = 1;
+ break;
+
+ case USB_DEVICE_TEST_MODE:
+ /* Setup the Test Mode tasklet to do the Test
+ * Packet generation after the SETUP Status
+ * phase has completed. */
+
+ /** @todo This has not been tested since the
+ * tasklet struct was put into the PCD
+ * struct! */
+ pcd->test_mode_tasklet.next = 0;
+ pcd->test_mode_tasklet.state = 0;
+ atomic_set(&pcd->test_mode_tasklet.count, 0);
+ pcd->test_mode_tasklet.func = do_test_mode;
+ pcd->test_mode_tasklet.data = (unsigned long)pcd;
+ pcd->test_mode = ctrl.wIndex >> 8;
+ tasklet_schedule(&pcd->test_mode_tasklet);
+ break;
+
+ case USB_DEVICE_B_HNP_ENABLE:
+ DWC_DEBUGPL(DBG_PCDV, "SET_FEATURE: USB_DEVICE_B_HNP_ENABLE\n");
+
+ /* dev may initiate HNP */
+ if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
+ pcd->b_hnp_enable = 1;
+ dwc_otg_pcd_update_otg(pcd, 0);
+ DWC_DEBUGPL(DBG_PCD, "Request B HNP\n");
+ /**@todo Is the gotgctl.devhnpen cleared
+ * by a USB Reset? */
+ gotgctl.b.devhnpen = 1;
+ gotgctl.b.hnpreq = 1;
+ dwc_write_reg32(&global_regs->gotgctl, gotgctl.d32);
+ }
+ else {
+ ep0_do_stall(pcd, -EOPNOTSUPP);
+ }
+ break;
+
+ case USB_DEVICE_A_HNP_SUPPORT:
+ /* RH port supports HNP */
+ DWC_DEBUGPL(DBG_PCDV, "SET_FEATURE: USB_DEVICE_A_HNP_SUPPORT\n");
+ if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
+ pcd->a_hnp_support = 1;
+ dwc_otg_pcd_update_otg(pcd, 0);
+ }
+ else {
+ ep0_do_stall(pcd, -EOPNOTSUPP);
+ }
+ break;
+
+ case USB_DEVICE_A_ALT_HNP_SUPPORT:
+ /* other RH port does */
+ DWC_DEBUGPL(DBG_PCDV, "SET_FEATURE: USB_DEVICE_A_ALT_HNP_SUPPORT\n");
+ if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
+ pcd->a_alt_hnp_support = 1;
+ dwc_otg_pcd_update_otg(pcd, 0);
+ }
+ else {
+ ep0_do_stall(pcd, -EOPNOTSUPP);
+ }
+ break;
+ }
+ do_setup_in_status_phase(pcd);
+ break;
+
+ case USB_RECIP_INTERFACE:
+ do_gadget_setup(pcd, &ctrl);
+ break;
+
+ case USB_RECIP_ENDPOINT:
+ if (ctrl.wValue == USB_ENDPOINT_HALT) {
+ ep = get_ep_by_addr(pcd, ctrl.wIndex);
+ if (ep == 0) {
+ ep0_do_stall(pcd, -EOPNOTSUPP);
+ return;
+ }
+ ep->stopped = 1;
+ dwc_otg_ep_set_stall(core_if, &ep->dwc_ep);
+ }
+ do_setup_in_status_phase(pcd);
+ break;
+ }
+}
+
+/**
+ * This function process the CLEAR_FEATURE Setup Commands.
+ */
+static inline void do_clear_feature(dwc_otg_pcd_t *pcd)
+{
+ struct usb_ctrlrequest ctrl = pcd->setup_pkt->req;
+ dwc_otg_pcd_ep_t *ep = 0;
+
+ DWC_DEBUGPL(DBG_PCD,
+ "CLEAR_FEATURE:%02x.%02x v%04x i%04x l%04x\n",
+ ctrl.bRequestType, ctrl.bRequest,
+ ctrl.wValue, ctrl.wIndex, ctrl.wLength);
+
+ switch (ctrl.bRequestType & USB_RECIP_MASK) {
+ case USB_RECIP_DEVICE:
+ switch (ctrl.wValue) {
+ case USB_DEVICE_REMOTE_WAKEUP:
+ pcd->remote_wakeup_enable = 0;
+ break;
+
+ case USB_DEVICE_TEST_MODE:
+ /** @todo Add CLEAR_FEATURE for TEST modes. */
+ break;
+ }
+ do_setup_in_status_phase(pcd);
+ break;
+
+ case USB_RECIP_ENDPOINT:
+ ep = get_ep_by_addr(pcd, ctrl.wIndex);
+ if (ep == 0) {
+ ep0_do_stall(pcd, -EOPNOTSUPP);
+ return;
+ }
+
+ pcd_clear_halt(pcd, ep);
+
+ break;
+ }
+}
+
+/**
+ * This function process the SET_ADDRESS Setup Commands.
+ */
+static inline void do_set_address(dwc_otg_pcd_t *pcd)
+{
+ dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
+ struct usb_ctrlrequest ctrl = pcd->setup_pkt->req;
+
+ if (ctrl.bRequestType == USB_RECIP_DEVICE) {
+ dcfg_data_t dcfg = {.d32=0};
+
+#ifdef DEBUG_EP0
+// DWC_DEBUGPL(DBG_PCDV, "SET_ADDRESS:%d\n", ctrl.wValue);
+#endif
+ dcfg.b.devaddr = ctrl.wValue;
+ dwc_modify_reg32(&dev_if->dev_global_regs->dcfg, 0, dcfg.d32);
+ do_setup_in_status_phase(pcd);
+ }
+}
+
+/**
+ * This function processes SETUP commands. In Linux, the USB Command
+ * processing is done in two places - the first being the PCD and the
+ * second in the Gadget Driver (for example, the File-Backed Storage
+ * Gadget Driver).
+ *
+ * <table>
+ * <tr><td>Command </td><td>Driver </td><td>Description</td></tr>
+ *
+ * <tr><td>GET_STATUS </td><td>PCD </td><td>Command is processed as
+ * defined in chapter 9 of the USB 2.0 Specification chapter 9
+ * </td></tr>
+ *
+ * <tr><td>CLEAR_FEATURE </td><td>PCD </td><td>The Device and Endpoint
+ * requests are the ENDPOINT_HALT feature is procesed, all others the
+ * interface requests are ignored.</td></tr>
+ *
+ * <tr><td>SET_FEATURE </td><td>PCD </td><td>The Device and Endpoint
+ * requests are processed by the PCD. Interface requests are passed
+ * to the Gadget Driver.</td></tr>
+ *
+ * <tr><td>SET_ADDRESS </td><td>PCD </td><td>Program the DCFG reg,
+ * with device address received </td></tr>
+ *
+ * <tr><td>GET_DESCRIPTOR </td><td>Gadget Driver </td><td>Return the
+ * requested descriptor</td></tr>
+ *
+ * <tr><td>SET_DESCRIPTOR </td><td>Gadget Driver </td><td>Optional -
+ * not implemented by any of the existing Gadget Drivers.</td></tr>
+ *
+ * <tr><td>SET_CONFIGURATION </td><td>Gadget Driver </td><td>Disable
+ * all EPs and enable EPs for new configuration.</td></tr>
+ *
+ * <tr><td>GET_CONFIGURATION </td><td>Gadget Driver </td><td>Return
+ * the current configuration</td></tr>
+ *
+ * <tr><td>SET_INTERFACE </td><td>Gadget Driver </td><td>Disable all
+ * EPs and enable EPs for new configuration.</td></tr>
+ *
+ * <tr><td>GET_INTERFACE </td><td>Gadget Driver </td><td>Return the
+ * current interface.</td></tr>
+ *
+ * <tr><td>SYNC_FRAME </td><td>PCD </td><td>Display debug
+ * message.</td></tr>
+ * </table>
+ *
+ * When the SETUP Phase Done interrupt occurs, the PCD SETUP commands are
+ * processed by pcd_setup. Calling the Function Driver's setup function from
+ * pcd_setup processes the gadget SETUP commands.
+ */
+static inline void pcd_setup(dwc_otg_pcd_t *pcd)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+ struct usb_ctrlrequest ctrl = pcd->setup_pkt->req;
+ dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+
+ deptsiz0_data_t doeptsize0 = { .d32 = 0};
+
+#ifdef DEBUG_EP0
+ DWC_DEBUGPL(DBG_PCD, "SETUP %02x.%02x v%04x i%04x l%04x\n",
+ ctrl.bRequestType, ctrl.bRequest,
+ ctrl.wValue, ctrl.wIndex, ctrl.wLength);
+#endif
+
+ doeptsize0.d32 = dwc_read_reg32(&dev_if->out_ep_regs[0]->doeptsiz);
+
+ /** @todo handle > 1 setup packet , assert error for now */
+
+ if (core_if->dma_enable && core_if->dma_desc_enable == 0 && (doeptsize0.b.supcnt < 2)) {
+ DWC_ERROR ("\n\n----------- CANNOT handle > 1 setup packet in DMA mode\n\n");
+ }
+
+ /* Clean up the request queue */
+ dwc_otg_request_nuke(ep0);
+ ep0->stopped = 0;
+
+ if (ctrl.bRequestType & USB_DIR_IN) {
+ ep0->dwc_ep.is_in = 1;
+ pcd->ep0state = EP0_IN_DATA_PHASE;
+ }
+ else {
+ ep0->dwc_ep.is_in = 0;
+ pcd->ep0state = EP0_OUT_DATA_PHASE;
+ }
+
+ if(ctrl.wLength == 0) {
+ ep0->dwc_ep.is_in = 1;
+ pcd->ep0state = EP0_IN_STATUS_PHASE;
+ }
+
+ if ((ctrl.bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD) {
+ /* handle non-standard (class/vendor) requests in the gadget driver */
+ do_gadget_setup(pcd, &ctrl);
+ return;
+ }
+
+ /** @todo NGS: Handle bad setup packet? */
+
+///////////////////////////////////////////
+//// --- Standard Request handling --- ////
+
+ switch (ctrl.bRequest) {
+ case USB_REQ_GET_STATUS:
+ do_get_status(pcd);
+ break;
+
+ case USB_REQ_CLEAR_FEATURE:
+ do_clear_feature(pcd);
+ break;
+
+ case USB_REQ_SET_FEATURE:
+ do_set_feature(pcd);
+ break;
+
+ case USB_REQ_SET_ADDRESS:
+ do_set_address(pcd);
+ break;
+
+ case USB_REQ_SET_INTERFACE:
+ case USB_REQ_SET_CONFIGURATION:
+// _pcd->request_config = 1; /* Configuration changed */
+ do_gadget_setup(pcd, &ctrl);
+ break;
+
+ case USB_REQ_SYNCH_FRAME:
+ do_gadget_setup(pcd, &ctrl);
+ break;
+
+ default:
+ /* Call the Gadget Driver's setup functions */
+ do_gadget_setup(pcd, &ctrl);
+ break;
+ }
+}
+
+/**
+ * This function completes the ep0 control transfer.
+ */
+static int32_t ep0_complete_request(dwc_otg_pcd_ep_t *ep)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(ep->pcd);
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+ dwc_otg_dev_in_ep_regs_t *in_ep_regs =
+ dev_if->in_ep_regs[ep->dwc_ep.num];
+#ifdef DEBUG_EP0
+ dwc_otg_dev_out_ep_regs_t *out_ep_regs =
+ dev_if->out_ep_regs[ep->dwc_ep.num];
+#endif
+ deptsiz0_data_t deptsiz;
+ desc_sts_data_t desc_sts;
+ dwc_otg_pcd_request_t *req;
+ int is_last = 0;
+ dwc_otg_pcd_t *pcd = ep->pcd;
+
+ //DWC_DEBUGPL(DBG_PCDV, "%s() %s\n", __func__, _ep->ep.name);
+
+ if (pcd->ep0_pending && list_empty(&ep->queue)) {
+ if (ep->dwc_ep.is_in) {
+#ifdef DEBUG_EP0
+ DWC_DEBUGPL(DBG_PCDV, "Do setup OUT status phase\n");
+#endif
+ do_setup_out_status_phase(pcd);
+ }
+ else {
+#ifdef DEBUG_EP0
+ DWC_DEBUGPL(DBG_PCDV, "Do setup IN status phase\n");
+#endif
+ do_setup_in_status_phase(pcd);
+ }
+ pcd->ep0_pending = 0;
+ return 1;
+ }
+
+ if (list_empty(&ep->queue)) {
+ return 0;
+ }
+ req = list_entry(ep->queue.next, dwc_otg_pcd_request_t, queue);
+
+
+ if (pcd->ep0state == EP0_OUT_STATUS_PHASE || pcd->ep0state == EP0_IN_STATUS_PHASE) {
+ is_last = 1;
+ }
+ else if (ep->dwc_ep.is_in) {
+ deptsiz.d32 = dwc_read_reg32(&in_ep_regs->dieptsiz);
+ if(core_if->dma_desc_enable != 0)
+ desc_sts.d32 = readl(dev_if->in_desc_addr);
+#ifdef DEBUG_EP0
+ DWC_DEBUGPL(DBG_PCDV, "%s len=%d xfersize=%d pktcnt=%d\n",
+ ep->ep.name, ep->dwc_ep.xfer_len,
+ deptsiz.b.xfersize, deptsiz.b.pktcnt);
+#endif
+
+ if (((core_if->dma_desc_enable == 0) && (deptsiz.b.xfersize == 0)) ||
+ ((core_if->dma_desc_enable != 0) && (desc_sts.b.bytes == 0))) {
+ req->req.actual = ep->dwc_ep.xfer_count;
+ /* Is a Zero Len Packet needed? */
+ if (req->req.zero) {
+#ifdef DEBUG_EP0
+ DWC_DEBUGPL(DBG_PCD, "Setup Rx ZLP\n");
+#endif
+ req->req.zero = 0;
+ }
+ do_setup_out_status_phase(pcd);
+ }
+ }
+ else {
+ /* ep0-OUT */
+#ifdef DEBUG_EP0
+ deptsiz.d32 = dwc_read_reg32(&out_ep_regs->doeptsiz);
+ DWC_DEBUGPL(DBG_PCDV, "%s len=%d xsize=%d pktcnt=%d\n",
+ ep->ep.name, ep->dwc_ep.xfer_len,
+ deptsiz.b.xfersize,
+ deptsiz.b.pktcnt);
+#endif
+ req->req.actual = ep->dwc_ep.xfer_count;
+ /* Is a Zero Len Packet needed? */
+ if (req->req.zero) {
+#ifdef DEBUG_EP0
+ DWC_DEBUGPL(DBG_PCDV, "Setup Tx ZLP\n");
+#endif
+ req->req.zero = 0;
+ }
+ if(core_if->dma_desc_enable == 0)
+ do_setup_in_status_phase(pcd);
+ }
+
+ /* Complete the request */
+ if (is_last) {
+ dwc_otg_request_done(ep, req, 0);
+ ep->dwc_ep.start_xfer_buff = 0;
+ ep->dwc_ep.xfer_buff = 0;
+ ep->dwc_ep.xfer_len = 0;
+ return 1;
+ }
+ return 0;
+}
+
+/**
+ * This function completes the request for the EP. If there are
+ * additional requests for the EP in the queue they will be started.
+ */
+static void complete_ep(dwc_otg_pcd_ep_t *ep)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(ep->pcd);
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+ dwc_otg_dev_in_ep_regs_t *in_ep_regs =
+ dev_if->in_ep_regs[ep->dwc_ep.num];
+ deptsiz_data_t deptsiz;
+ desc_sts_data_t desc_sts;
+ dwc_otg_pcd_request_t *req = 0;
+ dwc_otg_dma_desc_t* dma_desc;
+ uint32_t byte_count = 0;
+ int is_last = 0;
+ int i;
+
+ DWC_DEBUGPL(DBG_PCDV,"%s() %s-%s\n", __func__, ep->ep.name,
+ (ep->dwc_ep.is_in?"IN":"OUT"));
+
+ /* Get any pending requests */
+ if (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next, dwc_otg_pcd_request_t,
+ queue);
+ if (!req) {
+ printk("complete_ep 0x%p, req = NULL!\n", ep);
+ return;
+ }
+ }
+ else {
+ printk("complete_ep 0x%p, ep->queue empty!\n", ep);
+ return;
+ }
+ DWC_DEBUGPL(DBG_PCD, "Requests %d\n", ep->pcd->request_pending);
+
+ if (ep->dwc_ep.is_in) {
+ deptsiz.d32 = dwc_read_reg32(&in_ep_regs->dieptsiz);
+
+ if (core_if->dma_enable) {
+ if(core_if->dma_desc_enable == 0) {
+ if (deptsiz.b.xfersize == 0 && deptsiz.b.pktcnt == 0) {
+ byte_count = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
+
+ ep->dwc_ep.xfer_buff += byte_count;
+ ep->dwc_ep.dma_addr += byte_count;
+ ep->dwc_ep.xfer_count += byte_count;
+
+ DWC_DEBUGPL(DBG_PCDV, "%s len=%d xfersize=%d pktcnt=%d\n",
+ ep->ep.name, ep->dwc_ep.xfer_len,
+ deptsiz.b.xfersize, deptsiz.b.pktcnt);
+
+
+ if(ep->dwc_ep.xfer_len < ep->dwc_ep.total_len) {
+ dwc_otg_ep_start_transfer(core_if, &ep->dwc_ep);
+ } else if(ep->dwc_ep.sent_zlp) {
+ /*
+ * This fragment of code should initiate 0
+ * length trasfer in case if it is queued
+ * a trasfer with size divisible to EPs max
+ * packet size and with usb_request zero field
+ * is set, which means that after data is transfered,
+ * it is also should be transfered
+ * a 0 length packet at the end. For Slave and
+ * Buffer DMA modes in this case SW has
+ * to initiate 2 transfers one with transfer size,
+ * and the second with 0 size. For Desriptor
+ * DMA mode SW is able to initiate a transfer,
+ * which will handle all the packets including
+ * the last 0 legth.
+ */
+ ep->dwc_ep.sent_zlp = 0;
+ dwc_otg_ep_start_zl_transfer(core_if, &ep->dwc_ep);
+ } else {
+ is_last = 1;
+ }
+ } else {
+ DWC_WARN("Incomplete transfer (%s-%s [siz=%d pkt=%d])\n",
+ ep->ep.name, (ep->dwc_ep.is_in?"IN":"OUT"),
+ deptsiz.b.xfersize, deptsiz.b.pktcnt);
+ }
+ } else {
+ dma_desc = ep->dwc_ep.desc_addr;
+ byte_count = 0;
+ ep->dwc_ep.sent_zlp = 0;
+
+ for(i = 0; i < ep->dwc_ep.desc_cnt; ++i) {
+ desc_sts.d32 = readl(dma_desc);
+ byte_count += desc_sts.b.bytes;
+ dma_desc++;
+ }
+
+ if(byte_count == 0) {
+ ep->dwc_ep.xfer_count = ep->dwc_ep.total_len;
+ is_last = 1;
+ } else {
+ DWC_WARN("Incomplete transfer\n");
+ }
+ }
+ } else {
+ if (deptsiz.b.xfersize == 0 && deptsiz.b.pktcnt == 0) {
+ /* Check if the whole transfer was completed,
+ * if no, setup transfer for next portion of data
+ */
+ DWC_DEBUGPL(DBG_PCDV, "%s len=%d xfersize=%d pktcnt=%d\n",
+ ep->ep.name, ep->dwc_ep.xfer_len,
+ deptsiz.b.xfersize, deptsiz.b.pktcnt);
+ if(ep->dwc_ep.xfer_len < ep->dwc_ep.total_len) {
+ dwc_otg_ep_start_transfer(core_if, &ep->dwc_ep);
+ } else if(ep->dwc_ep.sent_zlp) {
+ /*
+ * This fragment of code should initiate 0
+ * length trasfer in case if it is queued
+ * a trasfer with size divisible to EPs max
+ * packet size and with usb_request zero field
+ * is set, which means that after data is transfered,
+ * it is also should be transfered
+ * a 0 length packet at the end. For Slave and
+ * Buffer DMA modes in this case SW has
+ * to initiate 2 transfers one with transfer size,
+ * and the second with 0 size. For Desriptor
+ * DMA mode SW is able to initiate a transfer,
+ * which will handle all the packets including
+ * the last 0 legth.
+ */
+ ep->dwc_ep.sent_zlp = 0;
+ dwc_otg_ep_start_zl_transfer(core_if, &ep->dwc_ep);
+ } else {
+ is_last = 1;
+ }
+ }
+ else {
+ DWC_WARN("Incomplete transfer (%s-%s [siz=%d pkt=%d])\n",
+ ep->ep.name, (ep->dwc_ep.is_in?"IN":"OUT"),
+ deptsiz.b.xfersize, deptsiz.b.pktcnt);
+ }
+ }
+ } else {
+ dwc_otg_dev_out_ep_regs_t *out_ep_regs =
+ dev_if->out_ep_regs[ep->dwc_ep.num];
+ desc_sts.d32 = 0;
+ if(core_if->dma_enable) {
+ if(core_if->dma_desc_enable) {
+ dma_desc = ep->dwc_ep.desc_addr;
+ byte_count = 0;
+ ep->dwc_ep.sent_zlp = 0;
+ for(i = 0; i < ep->dwc_ep.desc_cnt; ++i) {
+ desc_sts.d32 = readl(dma_desc);
+ byte_count += desc_sts.b.bytes;
+ dma_desc++;
+ }
+
+ ep->dwc_ep.xfer_count = ep->dwc_ep.total_len
+ - byte_count + ((4 - (ep->dwc_ep.total_len & 0x3)) & 0x3);
+ is_last = 1;
+ } else {
+ deptsiz.d32 = 0;
+ deptsiz.d32 = dwc_read_reg32(&out_ep_regs->doeptsiz);
+
+ byte_count = (ep->dwc_ep.xfer_len -
+ ep->dwc_ep.xfer_count - deptsiz.b.xfersize);
+ ep->dwc_ep.xfer_buff += byte_count;
+ ep->dwc_ep.dma_addr += byte_count;
+ ep->dwc_ep.xfer_count += byte_count;
+
+ /* Check if the whole transfer was completed,
+ * if no, setup transfer for next portion of data
+ */
+ if(ep->dwc_ep.xfer_len < ep->dwc_ep.total_len) {
+ dwc_otg_ep_start_transfer(core_if, &ep->dwc_ep);
+ }
+ else if(ep->dwc_ep.sent_zlp) {
+ /*
+ * This fragment of code should initiate 0
+ * length trasfer in case if it is queued
+ * a trasfer with size divisible to EPs max
+ * packet size and with usb_request zero field
+ * is set, which means that after data is transfered,
+ * it is also should be transfered
+ * a 0 length packet at the end. For Slave and
+ * Buffer DMA modes in this case SW has
+ * to initiate 2 transfers one with transfer size,
+ * and the second with 0 size. For Desriptor
+ * DMA mode SW is able to initiate a transfer,
+ * which will handle all the packets including
+ * the last 0 legth.
+ */
+ ep->dwc_ep.sent_zlp = 0;
+ dwc_otg_ep_start_zl_transfer(core_if, &ep->dwc_ep);
+ } else {
+ is_last = 1;
+ }
+ }
+ } else {
+ /* Check if the whole transfer was completed,
+ * if no, setup transfer for next portion of data
+ */
+ if(ep->dwc_ep.xfer_len < ep->dwc_ep.total_len) {
+ dwc_otg_ep_start_transfer(core_if, &ep->dwc_ep);
+ }
+ else if(ep->dwc_ep.sent_zlp) {
+ /*
+ * This fragment of code should initiate 0
+ * length trasfer in case if it is queued
+ * a trasfer with size divisible to EPs max
+ * packet size and with usb_request zero field
+ * is set, which means that after data is transfered,
+ * it is also should be transfered
+ * a 0 length packet at the end. For Slave and
+ * Buffer DMA modes in this case SW has
+ * to initiate 2 transfers one with transfer size,
+ * and the second with 0 size. For Desriptor
+ * DMA mode SW is able to initiate a transfer,
+ * which will handle all the packets including
+ * the last 0 legth.
+ */
+ ep->dwc_ep.sent_zlp = 0;
+ dwc_otg_ep_start_zl_transfer(core_if, &ep->dwc_ep);
+ } else {
+ is_last = 1;
+ }
+ }
+
+#ifdef DEBUG
+
+ DWC_DEBUGPL(DBG_PCDV, "addr %p, %s len=%d cnt=%d xsize=%d pktcnt=%d\n",
+ &out_ep_regs->doeptsiz, ep->ep.name, ep->dwc_ep.xfer_len,
+ ep->dwc_ep.xfer_count,
+ deptsiz.b.xfersize,
+ deptsiz.b.pktcnt);
+#endif
+ }
+
+ /* Complete the request */
+ if (is_last) {
+ req->req.actual = ep->dwc_ep.xfer_count;
+
+ dwc_otg_request_done(ep, req, 0);
+
+ ep->dwc_ep.start_xfer_buff = 0;
+ ep->dwc_ep.xfer_buff = 0;
+ ep->dwc_ep.xfer_len = 0;
+
+ /* If there is a request in the queue start it.*/
+ start_next_request(ep);
+ }
+}
+
+
+#ifdef DWC_EN_ISOC
+
+/**
+ * This function BNA interrupt for Isochronous EPs
+ *
+ */
+static void dwc_otg_pcd_handle_iso_bna(dwc_otg_pcd_ep_t *ep)
+{
+ dwc_ep_t *dwc_ep = &ep->dwc_ep;
+ volatile uint32_t *addr;
+ depctl_data_t depctl = {.d32 = 0};
+ dwc_otg_pcd_t *pcd = ep->pcd;
+ dwc_otg_dma_desc_t *dma_desc;
+ int i;
+
+ dma_desc = dwc_ep->iso_desc_addr + dwc_ep->desc_cnt * (dwc_ep->proc_buf_num);
+
+ if(dwc_ep->is_in) {
+ desc_sts_data_t sts = {.d32 = 0};
+ for(i = 0;i < dwc_ep->desc_cnt; ++i, ++dma_desc)
+ {
+ sts.d32 = readl(&dma_desc->status);
+ sts.b_iso_in.bs = BS_HOST_READY;
+ writel(sts.d32,&dma_desc->status);
+ }
+ }
+ else {
+ desc_sts_data_t sts = {.d32 = 0};
+ for(i = 0;i < dwc_ep->desc_cnt; ++i, ++dma_desc)
+ {
+ sts.d32 = readl(&dma_desc->status);
+ sts.b_iso_out.bs = BS_HOST_READY;
+ writel(sts.d32,&dma_desc->status);
+ }
+ }
+
+ if(dwc_ep->is_in == 0){
+ addr = &GET_CORE_IF(pcd)->dev_if->out_ep_regs[dwc_ep->num]->doepctl;
+ }
+ else{
+ addr = &GET_CORE_IF(pcd)->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
+ }
+ depctl.b.epena = 1;
+ dwc_modify_reg32(addr,depctl.d32,depctl.d32);
+}
+
+/**
+ * This function sets latest iso packet information(non-PTI mode)
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+void set_current_pkt_info(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ deptsiz_data_t deptsiz = { .d32 = 0 };
+ dma_addr_t dma_addr;
+ uint32_t offset;
+
+ if(ep->proc_buf_num)
+ dma_addr = ep->dma_addr1;
+ else
+ dma_addr = ep->dma_addr0;
+
+
+ if(ep->is_in) {
+ deptsiz.d32 = dwc_read_reg32(&core_if->dev_if->in_ep_regs[ep->num]->dieptsiz);
+ offset = ep->data_per_frame;
+ } else {
+ deptsiz.d32 = dwc_read_reg32(&core_if->dev_if->out_ep_regs[ep->num]->doeptsiz);
+ offset = ep->data_per_frame + (0x4 & (0x4 - (ep->data_per_frame & 0x3)));
+ }
+
+ if(!deptsiz.b.xfersize) {
+ ep->pkt_info[ep->cur_pkt].length = ep->data_per_frame;
+ ep->pkt_info[ep->cur_pkt].offset = ep->cur_pkt_dma_addr - dma_addr;
+ ep->pkt_info[ep->cur_pkt].status = 0;
+ } else {
+ ep->pkt_info[ep->cur_pkt].length = ep->data_per_frame;
+ ep->pkt_info[ep->cur_pkt].offset = ep->cur_pkt_dma_addr - dma_addr;
+ ep->pkt_info[ep->cur_pkt].status = -ENODATA;
+ }
+ ep->cur_pkt_addr += offset;
+ ep->cur_pkt_dma_addr += offset;
+ ep->cur_pkt++;
+}
+
+/**
+ * This function sets latest iso packet information(DDMA mode)
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dwc_ep The EP to start the transfer on.
+ *
+ */
+static void set_ddma_iso_pkts_info(dwc_otg_core_if_t *core_if, dwc_ep_t *dwc_ep)
+{
+ dwc_otg_dma_desc_t* dma_desc;
+ desc_sts_data_t sts = {.d32 = 0};
+ iso_pkt_info_t *iso_packet;
+ uint32_t data_per_desc;
+ uint32_t offset;
+ int i, j;
+
+ iso_packet = dwc_ep->pkt_info;
+
+ /** Reinit closed DMA Descriptors*/
+ /** ISO OUT EP */
+ if(dwc_ep->is_in == 0) {
+ dma_desc = dwc_ep->iso_desc_addr + dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
+ offset = 0;
+
+ for(i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm; i+= dwc_ep->pkt_per_frm)
+ {
+ for(j = 0; j < dwc_ep->pkt_per_frm; ++j)
+ {
+ data_per_desc = ((j + 1) * dwc_ep->maxpacket > dwc_ep->data_per_frame) ?
+ dwc_ep->data_per_frame - j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+ data_per_desc += (data_per_desc % 4) ? (4 - data_per_desc % 4):0;
+
+ sts.d32 = readl(&dma_desc->status);
+
+ /* Write status in iso_packet_decsriptor */
+ iso_packet->status = sts.b_iso_out.rxsts + (sts.b_iso_out.bs^BS_DMA_DONE);
+ if(iso_packet->status) {
+ iso_packet->status = -ENODATA;
+ }
+
+ /* Received data length */
+ if(!sts.b_iso_out.rxbytes){
+ iso_packet->length = data_per_desc - sts.b_iso_out.rxbytes;
+ } else {
+ iso_packet->length = data_per_desc - sts.b_iso_out.rxbytes +
+ (4 - dwc_ep->data_per_frame % 4);
+ }
+
+ iso_packet->offset = offset;
+
+ offset += data_per_desc;
+ dma_desc ++;
+ iso_packet ++;
+ }
+ }
+
+ for(j = 0; j < dwc_ep->pkt_per_frm - 1; ++j)
+ {
+ data_per_desc = ((j + 1) * dwc_ep->maxpacket > dwc_ep->data_per_frame) ?
+ dwc_ep->data_per_frame - j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+ data_per_desc += (data_per_desc % 4) ? (4 - data_per_desc % 4):0;
+
+ sts.d32 = readl(&dma_desc->status);
+
+ /* Write status in iso_packet_decsriptor */
+ iso_packet->status = sts.b_iso_out.rxsts + (sts.b_iso_out.bs^BS_DMA_DONE);
+ if(iso_packet->status) {
+ iso_packet->status = -ENODATA;
+ }
+
+ /* Received data length */
+ iso_packet->length = dwc_ep->data_per_frame - sts.b_iso_out.rxbytes;
+
+ iso_packet->offset = offset;
+
+ offset += data_per_desc;
+ iso_packet++;
+ dma_desc++;
+ }
+
+ sts.d32 = readl(&dma_desc->status);
+
+ /* Write status in iso_packet_decsriptor */
+ iso_packet->status = sts.b_iso_out.rxsts + (sts.b_iso_out.bs^BS_DMA_DONE);
+ if(iso_packet->status) {
+ iso_packet->status = -ENODATA;
+ }
+ /* Received data length */
+ if(!sts.b_iso_out.rxbytes){
+ iso_packet->length = dwc_ep->data_per_frame - sts.b_iso_out.rxbytes;
+ } else {
+ iso_packet->length = dwc_ep->data_per_frame - sts.b_iso_out.rxbytes +
+ (4 - dwc_ep->data_per_frame % 4);
+ }
+
+ iso_packet->offset = offset;
+ }
+ else /** ISO IN EP */
+ {
+ dma_desc = dwc_ep->iso_desc_addr + dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
+
+ for(i = 0; i < dwc_ep->desc_cnt - 1; i++)
+ {
+ sts.d32 = readl(&dma_desc->status);
+
+ /* Write status in iso packet descriptor */
+ iso_packet->status = sts.b_iso_in.txsts + (sts.b_iso_in.bs^BS_DMA_DONE);
+ if(iso_packet->status != 0) {
+ iso_packet->status = -ENODATA;
+
+ }
+ /* Bytes has been transfered */
+ iso_packet->length = dwc_ep->data_per_frame - sts.b_iso_in.txbytes;
+
+ dma_desc ++;
+ iso_packet++;
+ }
+
+ sts.d32 = readl(&dma_desc->status);
+ while(sts.b_iso_in.bs == BS_DMA_BUSY) {
+ sts.d32 = readl(&dma_desc->status);
+ }
+
+ /* Write status in iso packet descriptor ??? do be done with ERROR codes*/
+ iso_packet->status = sts.b_iso_in.txsts + (sts.b_iso_in.bs^BS_DMA_DONE);
+ if(iso_packet->status != 0) {
+ iso_packet->status = -ENODATA;
+ }
+
+ /* Bytes has been transfered */
+ iso_packet->length = dwc_ep->data_per_frame - sts.b_iso_in.txbytes;
+ }
+}
+
+/**
+ * This function reinitialize DMA Descriptors for Isochronous transfer
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dwc_ep The EP to start the transfer on.
+ *
+ */
+static void reinit_ddma_iso_xfer(dwc_otg_core_if_t *core_if, dwc_ep_t *dwc_ep)
+{
+ int i, j;
+ dwc_otg_dma_desc_t* dma_desc;
+ dma_addr_t dma_ad;
+ volatile uint32_t *addr;
+ desc_sts_data_t sts = { .d32 =0 };
+ uint32_t data_per_desc;
+
+ if(dwc_ep->is_in == 0) {
+ addr = &core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl;
+ }
+ else {
+ addr = &core_if->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
+ }
+
+
+ if(dwc_ep->proc_buf_num == 0) {
+ /** Buffer 0 descriptors setup */
+ dma_ad = dwc_ep->dma_addr0;
+ }
+ else {
+ /** Buffer 1 descriptors setup */
+ dma_ad = dwc_ep->dma_addr1;
+ }
+
+
+ /** Reinit closed DMA Descriptors*/
+ /** ISO OUT EP */
+ if(dwc_ep->is_in == 0) {
+ dma_desc = dwc_ep->iso_desc_addr + dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
+
+ sts.b_iso_out.bs = BS_HOST_READY;
+ sts.b_iso_out.rxsts = 0;
+ sts.b_iso_out.l = 0;
+ sts.b_iso_out.sp = 0;
+ sts.b_iso_out.ioc = 0;
+ sts.b_iso_out.pid = 0;
+ sts.b_iso_out.framenum = 0;
+
+ for(i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm; i+= dwc_ep->pkt_per_frm)
+ {
+ for(j = 0; j < dwc_ep->pkt_per_frm; ++j)
+ {
+ data_per_desc = ((j + 1) * dwc_ep->maxpacket > dwc_ep->data_per_frame) ?
+ dwc_ep->data_per_frame - j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+ data_per_desc += (data_per_desc % 4) ? (4 - data_per_desc % 4):0;
+ sts.b_iso_out.rxbytes = data_per_desc;
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+
+ (uint32_t)dma_ad += data_per_desc;
+ dma_desc ++;
+ }
+ }
+
+ for(j = 0; j < dwc_ep->pkt_per_frm - 1; ++j)
+ {
+
+ data_per_desc = ((j + 1) * dwc_ep->maxpacket > dwc_ep->data_per_frame) ?
+ dwc_ep->data_per_frame - j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+ data_per_desc += (data_per_desc % 4) ? (4 - data_per_desc % 4):0;
+ sts.b_iso_out.rxbytes = data_per_desc;
+
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+
+ dma_desc++;
+ (uint32_t)dma_ad += data_per_desc;
+ }
+
+ sts.b_iso_out.ioc = 1;
+ sts.b_iso_out.l = dwc_ep->proc_buf_num;
+
+ data_per_desc = ((j + 1) * dwc_ep->maxpacket > dwc_ep->data_per_frame) ?
+ dwc_ep->data_per_frame - j * dwc_ep->maxpacket : dwc_ep->maxpacket;
+ data_per_desc += (data_per_desc % 4) ? (4 - data_per_desc % 4):0;
+ sts.b_iso_out.rxbytes = data_per_desc;
+
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+ }
+ else /** ISO IN EP */
+ {
+ dma_desc = dwc_ep->iso_desc_addr + dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
+
+ sts.b_iso_in.bs = BS_HOST_READY;
+ sts.b_iso_in.txsts = 0;
+ sts.b_iso_in.sp = 0;
+ sts.b_iso_in.ioc = 0;
+ sts.b_iso_in.pid = dwc_ep->pkt_per_frm;
+ sts.b_iso_in.framenum = dwc_ep->next_frame;
+ sts.b_iso_in.txbytes = dwc_ep->data_per_frame;
+ sts.b_iso_in.l = 0;
+
+ for(i = 0; i < dwc_ep->desc_cnt - 1; i++)
+ {
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+
+ sts.b_iso_in.framenum += dwc_ep->bInterval;
+ (uint32_t)dma_ad += dwc_ep->data_per_frame;
+ dma_desc ++;
+ }
+
+ sts.b_iso_in.ioc = 1;
+ sts.b_iso_in.l = dwc_ep->proc_buf_num;
+
+ writel((uint32_t)dma_ad, &dma_desc->buf);
+ writel(sts.d32, &dma_desc->status);
+
+ dwc_ep->next_frame = sts.b_iso_in.framenum + dwc_ep->bInterval * 1;
+ }
+ dwc_ep->proc_buf_num = (dwc_ep->proc_buf_num ^ 1) & 0x1;
+}
+
+
+/**
+ * This function is to handle Iso EP transfer complete interrupt
+ * in case Iso out packet was dropped
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param dwc_ep The EP for wihich transfer complete was asserted
+ *
+ */
+static uint32_t handle_iso_out_pkt_dropped(dwc_otg_core_if_t *core_if, dwc_ep_t *dwc_ep)
+{
+ uint32_t dma_addr;
+ uint32_t drp_pkt;
+ uint32_t drp_pkt_cnt;
+ deptsiz_data_t deptsiz = { .d32 = 0 };
+ depctl_data_t depctl = { .d32 = 0 };
+ int i;
+
+ deptsiz.d32 = dwc_read_reg32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doeptsiz);
+
+ drp_pkt = dwc_ep->pkt_cnt - deptsiz.b.pktcnt;
+ drp_pkt_cnt = dwc_ep->pkt_per_frm - (drp_pkt % dwc_ep->pkt_per_frm);
+
+ /* Setting dropped packets status */
+ for(i = 0; i < drp_pkt_cnt; ++i) {
+ dwc_ep->pkt_info[drp_pkt].status = -ENODATA;
+ drp_pkt ++;
+ deptsiz.b.pktcnt--;
+ }
+
+
+ if(deptsiz.b.pktcnt > 0) {
+ deptsiz.b.xfersize = dwc_ep->xfer_len - (dwc_ep->pkt_cnt - deptsiz.b.pktcnt) * dwc_ep->maxpacket;
+ } else {
+ deptsiz.b.xfersize = 0;
+ deptsiz.b.pktcnt = 0;
+ }
+
+ dwc_write_reg32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doeptsiz, deptsiz.d32);
+
+ if(deptsiz.b.pktcnt > 0) {
+ if(dwc_ep->proc_buf_num) {
+ dma_addr = dwc_ep->dma_addr1 + dwc_ep->xfer_len - deptsiz.b.xfersize;
+ } else {
+ dma_addr = dwc_ep->dma_addr0 + dwc_ep->xfer_len - deptsiz.b.xfersize;;
+ }
+
+ dwc_write_reg32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doepdma, dma_addr);
+
+ /** Re-enable endpoint, clear nak */
+ depctl.d32 = 0;
+ depctl.b.epena = 1;
+ depctl.b.cnak = 1;
+
+ dwc_modify_reg32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl,
+ depctl.d32,depctl.d32);
+ return 0;
+ } else {
+ return 1;
+ }
+}
+
+/**
+ * This function sets iso packets information(PTI mode)
+ *
+ * @param core_if Programming view of DWC_otg controller.
+ * @param ep The EP to start the transfer on.
+ *
+ */
+static uint32_t set_iso_pkts_info(dwc_otg_core_if_t *core_if, dwc_ep_t *ep)
+{
+ int i, j;
+ dma_addr_t dma_ad;
+ iso_pkt_info_t *packet_info = ep->pkt_info;
+ uint32_t offset;
+ uint32_t frame_data;
+ deptsiz_data_t deptsiz;
+
+ if(ep->proc_buf_num == 0) {
+ /** Buffer 0 descriptors setup */
+ dma_ad = ep->dma_addr0;
+ }
+ else {
+ /** Buffer 1 descriptors setup */
+ dma_ad = ep->dma_addr1;
+ }
+
+
+ if(ep->is_in) {
+ deptsiz.d32 = dwc_read_reg32(&core_if->dev_if->in_ep_regs[ep->num]->dieptsiz);
+ } else {
+ deptsiz.d32 = dwc_read_reg32(&core_if->dev_if->out_ep_regs[ep->num]->doeptsiz);
+ }
+
+ if(!deptsiz.b.xfersize) {
+ offset = 0;
+ for(i = 0; i < ep->pkt_cnt; i += ep->pkt_per_frm)
+ {
+ frame_data = ep->data_per_frame;
+ for(j = 0; j < ep->pkt_per_frm; ++j) {
+
+ /* Packet status - is not set as initially
+ * it is set to 0 and if packet was sent
+ successfully, status field will remain 0*/
+
+
+ /* Bytes has been transfered */
+ packet_info->length = (ep->maxpacket < frame_data) ?
+ ep->maxpacket : frame_data;
+
+ /* Received packet offset */
+ packet_info->offset = offset;
+ offset += packet_info->length;
+ frame_data -= packet_info->length;
+
+ packet_info ++;
+ }
+ }
+ return 1;
+ } else {
+ /* This is a workaround for in case of Transfer Complete with
+ * PktDrpSts interrupts merging - in this case Transfer complete
+ * interrupt for Isoc Out Endpoint is asserted without PktDrpSts
+ * set and with DOEPTSIZ register non zero. Investigations showed,
+ * that this happens when Out packet is dropped, but because of
+ * interrupts merging during first interrupt handling PktDrpSts
+ * bit is cleared and for next merged interrupts it is not reset.
+ * In this case SW hadles the interrupt as if PktDrpSts bit is set.
+ */
+ if(ep->is_in) {
+ return 1;
+ } else {
+ return handle_iso_out_pkt_dropped(core_if, ep);
+ }
+ }
+}
+
+/**
+ * This function is to handle Iso EP transfer complete interrupt
+ *
+ * @param ep The EP for which transfer complete was asserted
+ *
+ */
+static void complete_iso_ep(dwc_otg_pcd_ep_t *ep)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(ep->pcd);
+ dwc_ep_t *dwc_ep = &ep->dwc_ep;
+ uint8_t is_last = 0;
+
+ if(core_if->dma_enable) {
+ if(core_if->dma_desc_enable) {
+ set_ddma_iso_pkts_info(core_if, dwc_ep);
+ reinit_ddma_iso_xfer(core_if, dwc_ep);
+ is_last = 1;
+ } else {
+ if(core_if->pti_enh_enable) {
+ if(set_iso_pkts_info(core_if, dwc_ep)) {
+ dwc_ep->proc_buf_num = (dwc_ep->proc_buf_num ^ 1) & 0x1;
+ dwc_otg_iso_ep_start_buf_transfer(core_if, dwc_ep);
+ is_last = 1;
+ }
+ } else {
+ set_current_pkt_info(core_if, dwc_ep);
+ if(dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
+ is_last = 1;
+ dwc_ep->cur_pkt = 0;
+ dwc_ep->proc_buf_num = (dwc_ep->proc_buf_num ^ 1) & 0x1;
+ if(dwc_ep->proc_buf_num) {
+ dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff1;
+ dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr1;
+ } else {
+ dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff0;
+ dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr0;
+ }
+
+ }
+ dwc_otg_iso_ep_start_frm_transfer(core_if, dwc_ep);
+ }
+ }
+ } else {
+ set_current_pkt_info(core_if, dwc_ep);
+ if(dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
+ is_last = 1;
+ dwc_ep->cur_pkt = 0;
+ dwc_ep->proc_buf_num = (dwc_ep->proc_buf_num ^ 1) & 0x1;
+ if(dwc_ep->proc_buf_num) {
+ dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff1;
+ dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr1;
+ } else {
+ dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff0;
+ dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr0;
+ }
+
+ }
+ dwc_otg_iso_ep_start_frm_transfer(core_if, dwc_ep);
+ }
+ if(is_last)
+ dwc_otg_iso_buffer_done(ep, ep->iso_req);
+}
+
+#endif //DWC_EN_ISOC
+
+
+/**
+ * This function handles EP0 Control transfers.
+ *
+ * The state of the control tranfers are tracked in
+ * <code>ep0state</code>.
+ */
+static void handle_ep0(dwc_otg_pcd_t *pcd)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+ dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
+ desc_sts_data_t desc_sts;
+ deptsiz0_data_t deptsiz;
+ uint32_t byte_count;
+
+#ifdef DEBUG_EP0
+ DWC_DEBUGPL(DBG_PCDV, "%s()\n", __func__);
+ print_ep0_state(pcd);
+#endif
+
+ switch (pcd->ep0state) {
+ case EP0_DISCONNECT:
+ break;
+
+ case EP0_IDLE:
+ pcd->request_config = 0;
+
+ pcd_setup(pcd);
+ break;
+
+ case EP0_IN_DATA_PHASE:
+#ifdef DEBUG_EP0
+ DWC_DEBUGPL(DBG_PCD, "DATA_IN EP%d-%s: type=%d, mps=%d\n",
+ ep0->dwc_ep.num, (ep0->dwc_ep.is_in ?"IN":"OUT"),
+ ep0->dwc_ep.type, ep0->dwc_ep.maxpacket);
+#endif
+
+ if (core_if->dma_enable != 0) {
+ /*
+ * For EP0 we can only program 1 packet at a time so we
+ * need to do the make calculations after each complete.
+ * Call write_packet to make the calculations, as in
+ * slave mode, and use those values to determine if we
+ * can complete.
+ */
+ if(core_if->dma_desc_enable == 0) {
+ deptsiz.d32 = dwc_read_reg32(&core_if->dev_if->in_ep_regs[0]->dieptsiz);
+ byte_count = ep0->dwc_ep.xfer_len - deptsiz.b.xfersize;
+ }
+ else {
+ desc_sts.d32 = readl(core_if->dev_if->in_desc_addr);
+ byte_count = ep0->dwc_ep.xfer_len - desc_sts.b.bytes;
+ }
+ ep0->dwc_ep.xfer_count += byte_count;
+ ep0->dwc_ep.xfer_buff += byte_count;
+ ep0->dwc_ep.dma_addr += byte_count;
+ }
+ if (ep0->dwc_ep.xfer_count < ep0->dwc_ep.total_len) {
+ dwc_otg_ep0_continue_transfer (GET_CORE_IF(pcd), &ep0->dwc_ep);
+ DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER\n");
+ }
+ else if(ep0->dwc_ep.sent_zlp) {
+ dwc_otg_ep0_continue_transfer (GET_CORE_IF(pcd), &ep0->dwc_ep);
+ ep0->dwc_ep.sent_zlp = 0;
+ DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER\n");
+ }
+ else {
+ ep0_complete_request(ep0);
+ DWC_DEBUGPL(DBG_PCD, "COMPLETE TRANSFER\n");
+ }
+ break;
+ case EP0_OUT_DATA_PHASE:
+#ifdef DEBUG_EP0
+ DWC_DEBUGPL(DBG_PCD, "DATA_OUT EP%d-%s: type=%d, mps=%d\n",
+ ep0->dwc_ep.num, (ep0->dwc_ep.is_in ?"IN":"OUT"),
+ ep0->dwc_ep.type, ep0->dwc_ep.maxpacket);
+#endif
+ if (core_if->dma_enable != 0) {
+ if(core_if->dma_desc_enable == 0) {
+ deptsiz.d32 = dwc_read_reg32(&core_if->dev_if->out_ep_regs[0]->doeptsiz);
+ byte_count = ep0->dwc_ep.maxpacket - deptsiz.b.xfersize;
+ }
+ else {
+ desc_sts.d32 = readl(core_if->dev_if->out_desc_addr);
+ byte_count = ep0->dwc_ep.maxpacket - desc_sts.b.bytes;
+ }
+ ep0->dwc_ep.xfer_count += byte_count;
+ ep0->dwc_ep.xfer_buff += byte_count;
+ ep0->dwc_ep.dma_addr += byte_count;
+ }
+ if (ep0->dwc_ep.xfer_count < ep0->dwc_ep.total_len) {
+ dwc_otg_ep0_continue_transfer (GET_CORE_IF(pcd), &ep0->dwc_ep);
+ DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER\n");
+ }
+ else if(ep0->dwc_ep.sent_zlp) {
+ dwc_otg_ep0_continue_transfer (GET_CORE_IF(pcd), &ep0->dwc_ep);
+ ep0->dwc_ep.sent_zlp = 0;
+ DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER\n");
+ }
+ else {
+ ep0_complete_request(ep0);
+ DWC_DEBUGPL(DBG_PCD, "COMPLETE TRANSFER\n");
+ }
+ break;
+
+
+ case EP0_IN_STATUS_PHASE:
+ case EP0_OUT_STATUS_PHASE:
+ DWC_DEBUGPL(DBG_PCD, "CASE: EP0_STATUS\n");
+ ep0_complete_request(ep0);
+ pcd->ep0state = EP0_IDLE;
+ ep0->stopped = 1;
+ ep0->dwc_ep.is_in = 0; /* OUT for next SETUP */
+
+ /* Prepare for more SETUP Packets */
+ if(core_if->dma_enable) {
+ ep0_out_start(core_if, pcd);
+ }
+ break;
+
+ case EP0_STALL:
+ DWC_ERROR("EP0 STALLed, should not get here pcd_setup()\n");
+ break;
+ }
+#ifdef DEBUG_EP0
+ print_ep0_state(pcd);
+#endif
+}
+
+
+/**
+ * Restart transfer
+ */
+static void restart_transfer(dwc_otg_pcd_t *pcd, const uint32_t epnum)
+{
+ dwc_otg_core_if_t *core_if;
+ dwc_otg_dev_if_t *dev_if;
+ deptsiz_data_t dieptsiz = {.d32=0};
+ dwc_otg_pcd_ep_t *ep;
+
+ ep = get_in_ep(pcd, epnum);
+
+#ifdef DWC_EN_ISOC
+ if(ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
+ return;
+ }
+#endif /* DWC_EN_ISOC */
+
+ core_if = GET_CORE_IF(pcd);
+ dev_if = core_if->dev_if;
+
+ dieptsiz.d32 = dwc_read_reg32(&dev_if->in_ep_regs[epnum]->dieptsiz);
+
+ DWC_DEBUGPL(DBG_PCD,"xfer_buff=%p xfer_count=%0x xfer_len=%0x"
+ " stopped=%d\n", ep->dwc_ep.xfer_buff,
+ ep->dwc_ep.xfer_count, ep->dwc_ep.xfer_len ,
+ ep->stopped);
+ /*
+ * If xfersize is 0 and pktcnt in not 0, resend the last packet.
+ */
+ if (dieptsiz.b.pktcnt && dieptsiz.b.xfersize == 0 &&
+ ep->dwc_ep.start_xfer_buff != 0) {
+ if (ep->dwc_ep.total_len <= ep->dwc_ep.maxpacket) {
+ ep->dwc_ep.xfer_count = 0;
+ ep->dwc_ep.xfer_buff = ep->dwc_ep.start_xfer_buff;
+ ep->dwc_ep.xfer_len = ep->dwc_ep.xfer_count;
+ }
+ else {
+ ep->dwc_ep.xfer_count -= ep->dwc_ep.maxpacket;
+ /* convert packet size to dwords. */
+ ep->dwc_ep.xfer_buff -= ep->dwc_ep.maxpacket;
+ ep->dwc_ep.xfer_len = ep->dwc_ep.xfer_count;
+ }
+ ep->stopped = 0;
+ DWC_DEBUGPL(DBG_PCD,"xfer_buff=%p xfer_count=%0x "
+ "xfer_len=%0x stopped=%d\n",
+ ep->dwc_ep.xfer_buff,
+ ep->dwc_ep.xfer_count, ep->dwc_ep.xfer_len ,
+ ep->stopped
+ );
+ if (epnum == 0) {
+ dwc_otg_ep0_start_transfer(core_if, &ep->dwc_ep);
+ }
+ else {
+ dwc_otg_ep_start_transfer(core_if, &ep->dwc_ep);
+ }
+ }
+}
+
+
+/**
+ * handle the IN EP disable interrupt.
+ */
+static inline void handle_in_ep_disable_intr(dwc_otg_pcd_t *pcd,
+ const uint32_t epnum)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+ deptsiz_data_t dieptsiz = {.d32=0};
+ dctl_data_t dctl = {.d32=0};
+ dwc_otg_pcd_ep_t *ep;
+ dwc_ep_t *dwc_ep;
+
+ ep = get_in_ep(pcd, epnum);
+ dwc_ep = &ep->dwc_ep;
+
+ if(dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+ dwc_otg_flush_tx_fifo(core_if, dwc_ep->tx_fifo_num);
+ return;
+ }
+
+ DWC_DEBUGPL(DBG_PCD,"diepctl%d=%0x\n", epnum,
+ dwc_read_reg32(&dev_if->in_ep_regs[epnum]->diepctl));
+ dieptsiz.d32 = dwc_read_reg32(&dev_if->in_ep_regs[epnum]->dieptsiz);
+
+ DWC_DEBUGPL(DBG_ANY, "pktcnt=%d size=%d\n",
+ dieptsiz.b.pktcnt,
+ dieptsiz.b.xfersize);
+
+ if (ep->stopped) {
+ /* Flush the Tx FIFO */
+ dwc_otg_flush_tx_fifo(core_if, dwc_ep->tx_fifo_num);
+ /* Clear the Global IN NP NAK */
+ dctl.d32 = 0;
+ dctl.b.cgnpinnak = 1;
+ dwc_modify_reg32(&dev_if->dev_global_regs->dctl,
+ dctl.d32, 0);
+ /* Restart the transaction */
+ if (dieptsiz.b.pktcnt != 0 ||
+ dieptsiz.b.xfersize != 0) {
+ restart_transfer(pcd, epnum);
+ }
+ }
+ else {
+ /* Restart the transaction */
+ if (dieptsiz.b.pktcnt != 0 ||
+ dieptsiz.b.xfersize != 0) {
+ restart_transfer(pcd, epnum);
+ }
+ DWC_DEBUGPL(DBG_ANY, "STOPPED!!!\n");
+ }
+}
+
+/**
+ * Handler for the IN EP timeout handshake interrupt.
+ */
+static inline void handle_in_ep_timeout_intr(dwc_otg_pcd_t *pcd,
+ const uint32_t epnum)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+
+#ifdef DEBUG
+ deptsiz_data_t dieptsiz = {.d32=0};
+ uint32_t num = 0;
+#endif
+ dctl_data_t dctl = {.d32=0};
+ dwc_otg_pcd_ep_t *ep;
+
+ gintmsk_data_t intr_mask = {.d32 = 0};
+
+ ep = get_in_ep(pcd, epnum);
+
+ /* Disable the NP Tx Fifo Empty Interrrupt */
+ if (!core_if->dma_enable) {
+ intr_mask.b.nptxfempty = 1;
+ dwc_modify_reg32(&core_if->core_global_regs->gintmsk, intr_mask.d32, 0);
+ }
+ /** @todo NGS Check EP type.
+ * Implement for Periodic EPs */
+ /*
+ * Non-periodic EP
+ */
+ /* Enable the Global IN NAK Effective Interrupt */
+ intr_mask.b.ginnakeff = 1;
+ dwc_modify_reg32(&core_if->core_global_regs->gintmsk,
+ 0, intr_mask.d32);
+
+ /* Set Global IN NAK */
+ dctl.b.sgnpinnak = 1;
+ dwc_modify_reg32(&dev_if->dev_global_regs->dctl,
+ dctl.d32, dctl.d32);
+
+ ep->stopped = 1;
+
+#ifdef DEBUG
+ dieptsiz.d32 = dwc_read_reg32(&dev_if->in_ep_regs[num]->dieptsiz);
+ DWC_DEBUGPL(DBG_ANY, "pktcnt=%d size=%d\n",
+ dieptsiz.b.pktcnt,
+ dieptsiz.b.xfersize);
+#endif
+
+#ifdef DISABLE_PERIODIC_EP
+ /*
+ * Set the NAK bit for this EP to
+ * start the disable process.
+ */
+ diepctl.d32 = 0;
+ diepctl.b.snak = 1;
+ dwc_modify_reg32(&dev_if->in_ep_regs[num]->diepctl, diepctl.d32, diepctl.d32);
+ ep->disabling = 1;
+ ep->stopped = 1;
+#endif
+}
+
+/**
+ * Handler for the IN EP NAK interrupt.
+ */
+static inline int32_t handle_in_ep_nak_intr(dwc_otg_pcd_t *pcd,
+ const uint32_t epnum)
+{
+ /** @todo implement ISR */
+ dwc_otg_core_if_t* core_if;
+ diepmsk_data_t intr_mask = { .d32 = 0};
+
+ DWC_PRINT("INTERRUPT Handler not implemented for %s\n", "IN EP NAK");
+ core_if = GET_CORE_IF(pcd);
+ intr_mask.b.nak = 1;
+
+ if(core_if->multiproc_int_enable) {
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->diepeachintmsk[epnum],
+ intr_mask.d32, 0);
+ } else {
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->diepmsk,
+ intr_mask.d32, 0);
+ }
+
+ return 1;
+}
+
+/**
+ * Handler for the OUT EP Babble interrupt.
+ */
+static inline int32_t handle_out_ep_babble_intr(dwc_otg_pcd_t *pcd,
+ const uint32_t epnum)
+{
+ /** @todo implement ISR */
+ dwc_otg_core_if_t* core_if;
+ doepmsk_data_t intr_mask = { .d32 = 0};
+
+ DWC_PRINT("INTERRUPT Handler not implemented for %s\n", "OUT EP Babble");
+ core_if = GET_CORE_IF(pcd);
+ intr_mask.b.babble = 1;
+
+ if(core_if->multiproc_int_enable) {
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->doepeachintmsk[epnum],
+ intr_mask.d32, 0);
+ } else {
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->doepmsk,
+ intr_mask.d32, 0);
+ }
+
+ return 1;
+}
+
+/**
+ * Handler for the OUT EP NAK interrupt.
+ */
+static inline int32_t handle_out_ep_nak_intr(dwc_otg_pcd_t *pcd,
+ const uint32_t epnum)
+{
+ /** @todo implement ISR */
+ dwc_otg_core_if_t* core_if;
+ doepmsk_data_t intr_mask = { .d32 = 0};
+
+ DWC_PRINT("INTERRUPT Handler not implemented for %s\n", "OUT EP NAK");
+ core_if = GET_CORE_IF(pcd);
+ intr_mask.b.nak = 1;
+
+ if(core_if->multiproc_int_enable) {
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->doepeachintmsk[epnum],
+ intr_mask.d32, 0);
+ } else {
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->doepmsk,
+ intr_mask.d32, 0);
+ }
+
+ return 1;
+}
+
+/**
+ * Handler for the OUT EP NYET interrupt.
+ */
+static inline int32_t handle_out_ep_nyet_intr(dwc_otg_pcd_t *pcd,
+ const uint32_t epnum)
+{
+ /** @todo implement ISR */
+ dwc_otg_core_if_t* core_if;
+ doepmsk_data_t intr_mask = { .d32 = 0};
+
+ DWC_PRINT("INTERRUPT Handler not implemented for %s\n", "OUT EP NYET");
+ core_if = GET_CORE_IF(pcd);
+ intr_mask.b.nyet = 1;
+
+ if(core_if->multiproc_int_enable) {
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->doepeachintmsk[epnum],
+ intr_mask.d32, 0);
+ } else {
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->doepmsk,
+ intr_mask.d32, 0);
+ }
+
+ return 1;
+}
+
+/**
+ * This interrupt indicates that an IN EP has a pending Interrupt.
+ * The sequence for handling the IN EP interrupt is shown below:
+ * -# Read the Device All Endpoint Interrupt register
+ * -# Repeat the following for each IN EP interrupt bit set (from
+ * LSB to MSB).
+ * -# Read the Device Endpoint Interrupt (DIEPINTn) register
+ * -# If "Transfer Complete" call the request complete function
+ * -# If "Endpoint Disabled" complete the EP disable procedure.
+ * -# If "AHB Error Interrupt" log error
+ * -# If "Time-out Handshake" log error
+ * -# If "IN Token Received when TxFIFO Empty" write packet to Tx
+ * FIFO.
+ * -# If "IN Token EP Mismatch" (disable, this is handled by EP
+ * Mismatch Interrupt)
+ */
+static int32_t dwc_otg_pcd_handle_in_ep_intr(dwc_otg_pcd_t *pcd)
+{
+#define CLEAR_IN_EP_INTR(__core_if,__epnum,__intr) \
+do { \
+ diepint_data_t diepint = {.d32=0}; \
+ diepint.b.__intr = 1; \
+ dwc_write_reg32(&__core_if->dev_if->in_ep_regs[__epnum]->diepint, \
+ diepint.d32); \
+} while (0)
+
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+ diepint_data_t diepint = {.d32=0};
+ dctl_data_t dctl = {.d32=0};
+ depctl_data_t depctl = {.d32=0};
+ uint32_t ep_intr;
+ uint32_t epnum = 0;
+ dwc_otg_pcd_ep_t *ep;
+ dwc_ep_t *dwc_ep;
+ gintmsk_data_t intr_mask = {.d32 = 0};
+
+
+
+ DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, pcd);
+
+ /* Read in the device interrupt bits */
+ ep_intr = dwc_otg_read_dev_all_in_ep_intr(core_if);
+
+ /* Service the Device IN interrupts for each endpoint */
+ while(ep_intr) {
+ if (ep_intr&0x1) {
+ uint32_t empty_msk;
+ /* Get EP pointer */
+ ep = get_in_ep(pcd, epnum);
+ dwc_ep = &ep->dwc_ep;
+
+ depctl.d32 = dwc_read_reg32(&dev_if->in_ep_regs[epnum]->diepctl);
+ empty_msk = dwc_read_reg32(&dev_if->dev_global_regs->dtknqr4_fifoemptymsk);
+
+ DWC_DEBUGPL(DBG_PCDV,
+ "IN EP INTERRUPT - %d\nepmty_msk - %8x diepctl - %8x\n",
+ epnum,
+ empty_msk,
+ depctl.d32);
+
+ DWC_DEBUGPL(DBG_PCD,
+ "EP%d-%s: type=%d, mps=%d\n",
+ dwc_ep->num, (dwc_ep->is_in ?"IN":"OUT"),
+ dwc_ep->type, dwc_ep->maxpacket);
+
+ diepint.d32 = dwc_otg_read_dev_in_ep_intr(core_if, dwc_ep);
+
+ DWC_DEBUGPL(DBG_PCDV, "EP %d Interrupt Register - 0x%x\n", epnum, diepint.d32);
+ /* Transfer complete */
+ if (diepint.b.xfercompl) {
+ /* Disable the NP Tx FIFO Empty
+ * Interrrupt */
+ if(core_if->en_multiple_tx_fifo == 0) {
+ intr_mask.b.nptxfempty = 1;
+ dwc_modify_reg32(&core_if->core_global_regs->gintmsk, intr_mask.d32, 0);
+ }
+ else {
+ /* Disable the Tx FIFO Empty Interrupt for this EP */
+ uint32_t fifoemptymsk = 0x1 << dwc_ep->num;
+ dwc_modify_reg32(&core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
+ fifoemptymsk, 0);
+ }
+ /* Clear the bit in DIEPINTn for this interrupt */
+ CLEAR_IN_EP_INTR(core_if,epnum,xfercompl);
+
+ /* Complete the transfer */
+ if (epnum == 0) {
+ handle_ep0(pcd);
+ }
+#ifdef DWC_EN_ISOC
+ else if(dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+ if(!ep->stopped)
+ complete_iso_ep(ep);
+ }
+#endif //DWC_EN_ISOC
+ else {
+
+ complete_ep(ep);
+ }
+ }
+ /* Endpoint disable */
+ if (diepint.b.epdisabled) {
+ DWC_DEBUGPL(DBG_ANY,"EP%d IN disabled\n", epnum);
+ handle_in_ep_disable_intr(pcd, epnum);
+
+ /* Clear the bit in DIEPINTn for this interrupt */
+ CLEAR_IN_EP_INTR(core_if,epnum,epdisabled);
+ }
+ /* AHB Error */
+ if (diepint.b.ahberr) {
+ DWC_DEBUGPL(DBG_ANY,"EP%d IN AHB Error\n", epnum);
+ /* Clear the bit in DIEPINTn for this interrupt */
+ CLEAR_IN_EP_INTR(core_if,epnum,ahberr);
+ }
+ /* TimeOUT Handshake (non-ISOC IN EPs) */
+ if (diepint.b.timeout) {
+ DWC_DEBUGPL(DBG_ANY,"EP%d IN Time-out\n", epnum);
+ handle_in_ep_timeout_intr(pcd, epnum);
+
+ CLEAR_IN_EP_INTR(core_if,epnum,timeout);
+ }
+ /** IN Token received with TxF Empty */
+ if (diepint.b.intktxfemp) {
+ DWC_DEBUGPL(DBG_ANY,"EP%d IN TKN TxFifo Empty\n",
+ epnum);
+ if (!ep->stopped && epnum != 0) {
+
+ diepmsk_data_t diepmsk = { .d32 = 0};
+ diepmsk.b.intktxfemp = 1;
+
+ if(core_if->multiproc_int_enable) {
+ dwc_modify_reg32(&dev_if->dev_global_regs->diepeachintmsk[epnum],
+ diepmsk.d32, 0);
+ } else {
+ dwc_modify_reg32(&dev_if->dev_global_regs->diepmsk, diepmsk.d32, 0);
+ }
+ start_next_request(ep);
+ }
+ else if(core_if->dma_desc_enable && epnum == 0 &&
+ pcd->ep0state == EP0_OUT_STATUS_PHASE) {
+ // EP0 IN set STALL
+ depctl.d32 = dwc_read_reg32(&dev_if->in_ep_regs[epnum]->diepctl);
+
+ /* set the disable and stall bits */
+ if (depctl.b.epena) {
+ depctl.b.epdis = 1;
+ }
+ depctl.b.stall = 1;
+ dwc_write_reg32(&dev_if->in_ep_regs[epnum]->diepctl, depctl.d32);
+ }
+ CLEAR_IN_EP_INTR(core_if,epnum,intktxfemp);
+ }
+ /** IN Token Received with EP mismatch */
+ if (diepint.b.intknepmis) {
+ DWC_DEBUGPL(DBG_ANY,"EP%d IN TKN EP Mismatch\n", epnum);
+ CLEAR_IN_EP_INTR(core_if,epnum,intknepmis);
+ }
+ /** IN Endpoint NAK Effective */
+ if (diepint.b.inepnakeff) {
+ DWC_DEBUGPL(DBG_ANY,"EP%d IN EP NAK Effective\n", epnum);
+ /* Periodic EP */
+ if (ep->disabling) {
+ depctl.d32 = 0;
+ depctl.b.snak = 1;
+ depctl.b.epdis = 1;
+ dwc_modify_reg32(&dev_if->in_ep_regs[epnum]->diepctl, depctl.d32, depctl.d32);
+ }
+ CLEAR_IN_EP_INTR(core_if,epnum,inepnakeff);
+
+ }
+
+ /** IN EP Tx FIFO Empty Intr */
+ if (diepint.b.emptyintr) {
+ DWC_DEBUGPL(DBG_ANY,"EP%d Tx FIFO Empty Intr \n", epnum);
+ write_empty_tx_fifo(pcd, epnum);
+
+ CLEAR_IN_EP_INTR(core_if,epnum,emptyintr);
+
+ }
+
+ /** IN EP BNA Intr */
+ if (diepint.b.bna) {
+ CLEAR_IN_EP_INTR(core_if,epnum,bna);
+ if(core_if->dma_desc_enable) {
+#ifdef DWC_EN_ISOC
+ if(dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+ /*
+ * This checking is performed to prevent first "false" BNA
+ * handling occuring right after reconnect
+ */
+ if(dwc_ep->next_frame != 0xffffffff)
+ dwc_otg_pcd_handle_iso_bna(ep);
+ }
+ else
+#endif //DWC_EN_ISOC
+ {
+ dctl.d32 = dwc_read_reg32(&dev_if->dev_global_regs->dctl);
+
+ /* If Global Continue on BNA is disabled - disable EP */
+ if(!dctl.b.gcontbna) {
+ depctl.d32 = 0;
+ depctl.b.snak = 1;
+ depctl.b.epdis = 1;
+ dwc_modify_reg32(&dev_if->in_ep_regs[epnum]->diepctl, depctl.d32, depctl.d32);
+ } else {
+ start_next_request(ep);
+ }
+ }
+ }
+ }
+ /* NAK Interrutp */
+ if (diepint.b.nak) {
+ DWC_DEBUGPL(DBG_ANY,"EP%d IN NAK Interrupt\n", epnum);
+ handle_in_ep_nak_intr(pcd, epnum);
+
+ CLEAR_IN_EP_INTR(core_if,epnum,nak);
+ }
+ }
+ epnum++;
+ ep_intr >>=1;
+ }
+
+ return 1;
+#undef CLEAR_IN_EP_INTR
+}
+
+/**
+ * This interrupt indicates that an OUT EP has a pending Interrupt.
+ * The sequence for handling the OUT EP interrupt is shown below:
+ * -# Read the Device All Endpoint Interrupt register
+ * -# Repeat the following for each OUT EP interrupt bit set (from
+ * LSB to MSB).
+ * -# Read the Device Endpoint Interrupt (DOEPINTn) register
+ * -# If "Transfer Complete" call the request complete function
+ * -# If "Endpoint Disabled" complete the EP disable procedure.
+ * -# If "AHB Error Interrupt" log error
+ * -# If "Setup Phase Done" process Setup Packet (See Standard USB
+ * Command Processing)
+ */
+static int32_t dwc_otg_pcd_handle_out_ep_intr(dwc_otg_pcd_t *pcd)
+{
+#define CLEAR_OUT_EP_INTR(__core_if,__epnum,__intr) \
+do { \
+ doepint_data_t doepint = {.d32=0}; \
+ doepint.b.__intr = 1; \
+ dwc_write_reg32(&__core_if->dev_if->out_ep_regs[__epnum]->doepint, \
+ doepint.d32); \
+} while (0)
+
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+ dwc_otg_dev_if_t *dev_if = core_if->dev_if;
+ uint32_t ep_intr;
+ doepint_data_t doepint = {.d32=0};
+ dctl_data_t dctl = {.d32=0};
+ depctl_data_t doepctl = {.d32=0};
+ uint32_t epnum = 0;
+ dwc_otg_pcd_ep_t *ep;
+ dwc_ep_t *dwc_ep;
+
+ DWC_DEBUGPL(DBG_PCDV, "%s()\n", __func__);
+
+ /* Read in the device interrupt bits */
+ ep_intr = dwc_otg_read_dev_all_out_ep_intr(core_if);
+
+ while(ep_intr) {
+ if (ep_intr&0x1) {
+ /* Get EP pointer */
+ ep = get_out_ep(pcd, epnum);
+ dwc_ep = &ep->dwc_ep;
+
+#ifdef VERBOSE
+ DWC_DEBUGPL(DBG_PCDV,
+ "EP%d-%s: type=%d, mps=%d\n",
+ dwc_ep->num, (dwc_ep->is_in ?"IN":"OUT"),
+ dwc_ep->type, dwc_ep->maxpacket);
+#endif
+ doepint.d32 = dwc_otg_read_dev_out_ep_intr(core_if, dwc_ep);
+
+ /* Transfer complete */
+ if (doepint.b.xfercompl) {
+
+ if (epnum == 0) {
+ /* Clear the bit in DOEPINTn for this interrupt */
+ CLEAR_OUT_EP_INTR(core_if,epnum,xfercompl);
+ if(core_if->dma_desc_enable == 0 || pcd->ep0state != EP0_IDLE)
+ handle_ep0(pcd);
+#ifdef DWC_EN_ISOC
+ } else if(dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+ if (doepint.b.pktdrpsts == 0) {
+ /* Clear the bit in DOEPINTn for this interrupt */
+ CLEAR_OUT_EP_INTR(core_if,epnum,xfercompl);
+ complete_iso_ep(ep);
+ } else {
+
+ doepint_data_t doepint = {.d32=0};
+ doepint.b.xfercompl = 1;
+ doepint.b.pktdrpsts = 1;
+ dwc_write_reg32(&core_if->dev_if->out_ep_regs[epnum]->doepint,
+ doepint.d32);
+ if(handle_iso_out_pkt_dropped(core_if,dwc_ep)) {
+ complete_iso_ep(ep);
+ }
+ }
+#endif //DWC_EN_ISOC
+ } else {
+ /* Clear the bit in DOEPINTn for this interrupt */
+ CLEAR_OUT_EP_INTR(core_if,epnum,xfercompl);
+ complete_ep(ep);
+ }
+
+ }
+
+ /* Endpoint disable */
+ if (doepint.b.epdisabled) {
+
+ /* Clear the bit in DOEPINTn for this interrupt */
+ CLEAR_OUT_EP_INTR(core_if,epnum,epdisabled);
+ }
+ /* AHB Error */
+ if (doepint.b.ahberr) {
+ DWC_DEBUGPL(DBG_PCD,"EP%d OUT AHB Error\n", epnum);
+ DWC_DEBUGPL(DBG_PCD,"EP DMA REG %d \n", core_if->dev_if->out_ep_regs[epnum]->doepdma);
+ CLEAR_OUT_EP_INTR(core_if,epnum,ahberr);
+ }
+ /* Setup Phase Done (contorl EPs) */
+ if (doepint.b.setup) {
+#ifdef DEBUG_EP0
+ DWC_DEBUGPL(DBG_PCD,"EP%d SETUP Done\n",
+ epnum);
+#endif
+ CLEAR_OUT_EP_INTR(core_if,epnum,setup);
+
+ handle_ep0(pcd);
+ }
+
+ /** OUT EP BNA Intr */
+ if (doepint.b.bna) {
+ CLEAR_OUT_EP_INTR(core_if,epnum,bna);
+ if(core_if->dma_desc_enable) {
+#ifdef DWC_EN_ISOC
+ if(dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
+ /*
+ * This checking is performed to prevent first "false" BNA
+ * handling occuring right after reconnect
+ */
+ if(dwc_ep->next_frame != 0xffffffff)
+ dwc_otg_pcd_handle_iso_bna(ep);
+ }
+ else
+#endif //DWC_EN_ISOC
+ {
+ dctl.d32 = dwc_read_reg32(&dev_if->dev_global_regs->dctl);
+
+ /* If Global Continue on BNA is disabled - disable EP*/
+ if(!dctl.b.gcontbna) {
+ doepctl.d32 = 0;
+ doepctl.b.snak = 1;
+ doepctl.b.epdis = 1;
+ dwc_modify_reg32(&dev_if->out_ep_regs[epnum]->doepctl, doepctl.d32, doepctl.d32);
+ } else {
+ start_next_request(ep);
+ }
+ }
+ }
+ }
+ if (doepint.b.stsphsercvd) {
+ CLEAR_OUT_EP_INTR(core_if,epnum,stsphsercvd);
+ if(core_if->dma_desc_enable) {
+ do_setup_in_status_phase(pcd);
+ }
+ }
+ /* Babble Interrutp */
+ if (doepint.b.babble) {
+ DWC_DEBUGPL(DBG_ANY,"EP%d OUT Babble\n", epnum);
+ handle_out_ep_babble_intr(pcd, epnum);
+
+ CLEAR_OUT_EP_INTR(core_if,epnum,babble);
+ }
+ /* NAK Interrutp */
+ if (doepint.b.nak) {
+ DWC_DEBUGPL(DBG_ANY,"EP%d OUT NAK\n", epnum);
+ handle_out_ep_nak_intr(pcd, epnum);
+
+ CLEAR_OUT_EP_INTR(core_if,epnum,nak);
+ }
+ /* NYET Interrutp */
+ if (doepint.b.nyet) {
+ DWC_DEBUGPL(DBG_ANY,"EP%d OUT NYET\n", epnum);
+ handle_out_ep_nyet_intr(pcd, epnum);
+
+ CLEAR_OUT_EP_INTR(core_if,epnum,nyet);
+ }
+ }
+
+ epnum++;
+ ep_intr >>=1;
+ }
+
+ return 1;
+
+#undef CLEAR_OUT_EP_INTR
+}
+
+
+/**
+ * Incomplete ISO IN Transfer Interrupt.
+ * This interrupt indicates one of the following conditions occurred
+ * while transmitting an ISOC transaction.
+ * - Corrupted IN Token for ISOC EP.
+ * - Packet not complete in FIFO.
+ * The follow actions will be taken:
+ * -# Determine the EP
+ * -# Set incomplete flag in dwc_ep structure
+ * -# Disable EP; when "Endpoint Disabled" interrupt is received
+ * Flush FIFO
+ */
+int32_t dwc_otg_pcd_handle_incomplete_isoc_in_intr(dwc_otg_pcd_t *pcd)
+{
+ gintsts_data_t gintsts;
+
+
+#ifdef DWC_EN_ISOC
+ dwc_otg_dev_if_t *dev_if;
+ deptsiz_data_t deptsiz = { .d32 = 0};
+ depctl_data_t depctl = { .d32 = 0};
+ dsts_data_t dsts = { .d32 = 0};
+ dwc_ep_t *dwc_ep;
+ int i;
+
+ dev_if = GET_CORE_IF(pcd)->dev_if;
+
+ for(i = 1; i <= dev_if->num_in_eps; ++i) {
+ dwc_ep = &pcd->in_ep[i].dwc_ep;
+ if(dwc_ep->active &&
+ dwc_ep->type == USB_ENDPOINT_XFER_ISOC)
+ {
+ deptsiz.d32 = dwc_read_reg32(&dev_if->in_ep_regs[i]->dieptsiz);
+ depctl.d32 = dwc_read_reg32(&dev_if->in_ep_regs[i]->diepctl);
+
+ if(depctl.b.epdis && deptsiz.d32) {
+ set_current_pkt_info(GET_CORE_IF(pcd), dwc_ep);
+ if(dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
+ dwc_ep->cur_pkt = 0;
+ dwc_ep->proc_buf_num = (dwc_ep->proc_buf_num ^ 1) & 0x1;
+
+ if(dwc_ep->proc_buf_num) {
+ dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff1;
+ dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr1;
+ } else {
+ dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff0;
+ dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr0;
+ }
+
+ }
+
+ dsts.d32 = dwc_read_reg32(&GET_CORE_IF(pcd)->dev_if->dev_global_regs->dsts);
+ dwc_ep->next_frame = dsts.b.soffn;
+
+ dwc_otg_iso_ep_start_frm_transfer(GET_CORE_IF(pcd), dwc_ep);
+ }
+ }
+ }
+
+#else
+ gintmsk_data_t intr_mask = { .d32 = 0};
+ DWC_PRINT("INTERRUPT Handler not implemented for %s\n",
+ "IN ISOC Incomplete");
+
+ intr_mask.b.incomplisoin = 1;
+ dwc_modify_reg32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+ intr_mask.d32, 0);
+#endif //DWC_EN_ISOC
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.incomplisoin = 1;
+ dwc_write_reg32 (&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+ gintsts.d32);
+
+ return 1;
+}
+
+/**
+ * Incomplete ISO OUT Transfer Interrupt.
+ *
+ * This interrupt indicates that the core has dropped an ISO OUT
+ * packet. The following conditions can be the cause:
+ * - FIFO Full, the entire packet would not fit in the FIFO.
+ * - CRC Error
+ * - Corrupted Token
+ * The follow actions will be taken:
+ * -# Determine the EP
+ * -# Set incomplete flag in dwc_ep structure
+ * -# Read any data from the FIFO
+ * -# Disable EP. when "Endpoint Disabled" interrupt is received
+ * re-enable EP.
+ */
+int32_t dwc_otg_pcd_handle_incomplete_isoc_out_intr(dwc_otg_pcd_t *pcd)
+{
+ /* @todo implement ISR */
+ gintsts_data_t gintsts;
+
+#ifdef DWC_EN_ISOC
+ dwc_otg_dev_if_t *dev_if;
+ deptsiz_data_t deptsiz = { .d32 = 0};
+ depctl_data_t depctl = { .d32 = 0};
+ dsts_data_t dsts = { .d32 = 0};
+ dwc_ep_t *dwc_ep;
+ int i;
+
+ dev_if = GET_CORE_IF(pcd)->dev_if;
+
+ for(i = 1; i <= dev_if->num_out_eps; ++i) {
+ dwc_ep = &pcd->in_ep[i].dwc_ep;
+ if(pcd->out_ep[i].dwc_ep.active &&
+ pcd->out_ep[i].dwc_ep.type == USB_ENDPOINT_XFER_ISOC)
+ {
+ deptsiz.d32 = dwc_read_reg32(&dev_if->out_ep_regs[i]->doeptsiz);
+ depctl.d32 = dwc_read_reg32(&dev_if->out_ep_regs[i]->doepctl);
+
+ if(depctl.b.epdis && deptsiz.d32) {
+ set_current_pkt_info(GET_CORE_IF(pcd), &pcd->out_ep[i].dwc_ep);
+ if(dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
+ dwc_ep->cur_pkt = 0;
+ dwc_ep->proc_buf_num = (dwc_ep->proc_buf_num ^ 1) & 0x1;
+
+ if(dwc_ep->proc_buf_num) {
+ dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff1;
+ dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr1;
+ } else {
+ dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff0;
+ dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr0;
+ }
+
+ }
+
+ dsts.d32 = dwc_read_reg32(&GET_CORE_IF(pcd)->dev_if->dev_global_regs->dsts);
+ dwc_ep->next_frame = dsts.b.soffn;
+
+ dwc_otg_iso_ep_start_frm_transfer(GET_CORE_IF(pcd), dwc_ep);
+ }
+ }
+ }
+#else
+ /** @todo implement ISR */
+ gintmsk_data_t intr_mask = { .d32 = 0};
+
+ DWC_PRINT("INTERRUPT Handler not implemented for %s\n",
+ "OUT ISOC Incomplete");
+
+ intr_mask.b.incomplisoout = 1;
+ dwc_modify_reg32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+ intr_mask.d32, 0);
+
+#endif // DWC_EN_ISOC
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.incomplisoout = 1;
+ dwc_write_reg32 (&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+ gintsts.d32);
+
+ return 1;
+}
+
+/**
+ * This function handles the Global IN NAK Effective interrupt.
+ *
+ */
+int32_t dwc_otg_pcd_handle_in_nak_effective(dwc_otg_pcd_t *pcd)
+{
+ dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
+ depctl_data_t diepctl = { .d32 = 0};
+ depctl_data_t diepctl_rd = { .d32 = 0};
+ gintmsk_data_t intr_mask = { .d32 = 0};
+ gintsts_data_t gintsts;
+ int i;
+
+ DWC_DEBUGPL(DBG_PCD, "Global IN NAK Effective\n");
+
+ /* Disable all active IN EPs */
+ diepctl.b.epdis = 1;
+ diepctl.b.snak = 1;
+
+ for (i=0; i <= dev_if->num_in_eps; i++)
+ {
+ diepctl_rd.d32 = dwc_read_reg32(&dev_if->in_ep_regs[i]->diepctl);
+ if (diepctl_rd.b.epena) {
+ dwc_write_reg32(&dev_if->in_ep_regs[i]->diepctl,
+ diepctl.d32);
+ }
+ }
+ /* Disable the Global IN NAK Effective Interrupt */
+ intr_mask.b.ginnakeff = 1;
+ dwc_modify_reg32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+ intr_mask.d32, 0);
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.ginnakeff = 1;
+ dwc_write_reg32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+ gintsts.d32);
+
+ return 1;
+}
+
+/**
+ * OUT NAK Effective.
+ *
+ */
+int32_t dwc_otg_pcd_handle_out_nak_effective(dwc_otg_pcd_t *pcd)
+{
+ gintmsk_data_t intr_mask = { .d32 = 0};
+ gintsts_data_t gintsts;
+
+ DWC_PRINT("INTERRUPT Handler not implemented for %s\n",
+ "Global IN NAK Effective\n");
+ /* Disable the Global IN NAK Effective Interrupt */
+ intr_mask.b.goutnakeff = 1;
+ dwc_modify_reg32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
+ intr_mask.d32, 0);
+
+ /* Clear interrupt */
+ gintsts.d32 = 0;
+ gintsts.b.goutnakeff = 1;
+ dwc_write_reg32 (&GET_CORE_IF(pcd)->core_global_regs->gintsts,
+ gintsts.d32);
+
+ return 1;
+}
+
+
+/**
+ * PCD interrupt handler.
+ *
+ * The PCD handles the device interrupts. Many conditions can cause a
+ * device interrupt. When an interrupt occurs, the device interrupt
+ * service routine determines the cause of the interrupt and
+ * dispatches handling to the appropriate function. These interrupt
+ * handling functions are described below.
+ *
+ * All interrupt registers are processed from LSB to MSB.
+ *
+ */
+int32_t dwc_otg_pcd_handle_intr(dwc_otg_pcd_t *pcd)
+{
+ dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
+#ifdef VERBOSE
+ dwc_otg_core_global_regs_t *global_regs =
+ core_if->core_global_regs;
+#endif
+ gintsts_data_t gintr_status;
+ int32_t retval = 0;
+
+
+#ifdef VERBOSE
+ DWC_DEBUGPL(DBG_ANY, "%s() gintsts=%08x gintmsk=%08x\n",
+ __func__,
+ dwc_read_reg32(&global_regs->gintsts),
+ dwc_read_reg32(&global_regs->gintmsk));
+#endif
+
+ if (dwc_otg_is_device_mode(core_if)) {
+ SPIN_LOCK(&pcd->lock);
+#ifdef VERBOSE
+ DWC_DEBUGPL(DBG_PCDV, "%s() gintsts=%08x gintmsk=%08x\n",
+ __func__,
+ dwc_read_reg32(&global_regs->gintsts),
+ dwc_read_reg32(&global_regs->gintmsk));
+#endif
+
+ gintr_status.d32 = dwc_otg_read_core_intr(core_if);
+
+/*
+ if (!gintr_status.d32) {
+ SPIN_UNLOCK(&pcd->lock);
+ return 0;
+ }
+*/
+ DWC_DEBUGPL(DBG_PCDV, "%s: gintsts&gintmsk=%08x\n",
+ __func__, gintr_status.d32);
+
+ if (gintr_status.b.sofintr) {
+ retval |= dwc_otg_pcd_handle_sof_intr(pcd);
+ }
+ if (gintr_status.b.rxstsqlvl) {
+ retval |= dwc_otg_pcd_handle_rx_status_q_level_intr(pcd);
+ }
+ if (gintr_status.b.nptxfempty) {
+ retval |= dwc_otg_pcd_handle_np_tx_fifo_empty_intr(pcd);
+ }
+ if (gintr_status.b.ginnakeff) {
+ retval |= dwc_otg_pcd_handle_in_nak_effective(pcd);
+ }
+ if (gintr_status.b.goutnakeff) {
+ retval |= dwc_otg_pcd_handle_out_nak_effective(pcd);
+ }
+ if (gintr_status.b.i2cintr) {
+ retval |= dwc_otg_pcd_handle_i2c_intr(pcd);
+ }
+ if (gintr_status.b.erlysuspend) {
+ retval |= dwc_otg_pcd_handle_early_suspend_intr(pcd);
+ }
+ if (gintr_status.b.usbreset) {
+ retval |= dwc_otg_pcd_handle_usb_reset_intr(pcd);
+ }
+ if (gintr_status.b.enumdone) {
+ retval |= dwc_otg_pcd_handle_enum_done_intr(pcd);
+ }
+ if (gintr_status.b.isooutdrop) {
+ retval |= dwc_otg_pcd_handle_isoc_out_packet_dropped_intr(pcd);
+ }
+ if (gintr_status.b.eopframe) {
+ retval |= dwc_otg_pcd_handle_end_periodic_frame_intr(pcd);
+ }
+ if (gintr_status.b.epmismatch) {
+ retval |= dwc_otg_pcd_handle_ep_mismatch_intr(core_if);
+ }
+ if (gintr_status.b.inepint) {
+ if(!core_if->multiproc_int_enable) {
+ retval |= dwc_otg_pcd_handle_in_ep_intr(pcd);
+ }
+ }
+ if (gintr_status.b.outepintr) {
+ if(!core_if->multiproc_int_enable) {
+ retval |= dwc_otg_pcd_handle_out_ep_intr(pcd);
+ }
+ }
+ if (gintr_status.b.incomplisoin) {
+ retval |= dwc_otg_pcd_handle_incomplete_isoc_in_intr(pcd);
+ }
+ if (gintr_status.b.incomplisoout) {
+ retval |= dwc_otg_pcd_handle_incomplete_isoc_out_intr(pcd);
+ }
+
+ /* In MPI mode De vice Endpoints intterrupts are asserted
+ * without setting outepintr and inepint bits set, so these
+ * Interrupt handlers are called without checking these bit-fields
+ */
+ if(core_if->multiproc_int_enable) {
+ retval |= dwc_otg_pcd_handle_in_ep_intr(pcd);
+ retval |= dwc_otg_pcd_handle_out_ep_intr(pcd);
+ }
+#ifdef VERBOSE
+ DWC_DEBUGPL(DBG_PCDV, "%s() gintsts=%0x\n", __func__,
+ dwc_read_reg32(&global_regs->gintsts));
+#endif
+ SPIN_UNLOCK(&pcd->lock);
+ }
+
+ S3C2410X_CLEAR_EINTPEND();
+
+ return retval;
+}
+
+#endif /* DWC_HOST_ONLY */
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_regs.h $
+ * $Revision: 1.2 $
+ * $Date: 2008-11-21 05:39:15 $
+ * $Change: 1099526 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#ifndef __DWC_OTG_REGS_H__
+#define __DWC_OTG_REGS_H__
+
+/**
+ * @file
+ *
+ * This file contains the data structures for accessing the DWC_otg core registers.
+ *
+ * The application interfaces with the HS OTG core by reading from and
+ * writing to the Control and Status Register (CSR) space through the
+ * AHB Slave interface. These registers are 32 bits wide, and the
+ * addresses are 32-bit-block aligned.
+ * CSRs are classified as follows:
+ * - Core Global Registers
+ * - Device Mode Registers
+ * - Device Global Registers
+ * - Device Endpoint Specific Registers
+ * - Host Mode Registers
+ * - Host Global Registers
+ * - Host Port CSRs
+ * - Host Channel Specific Registers
+ *
+ * Only the Core Global registers can be accessed in both Device and
+ * Host modes. When the HS OTG core is operating in one mode, either
+ * Device or Host, the application must not access registers from the
+ * other mode. When the core switches from one mode to another, the
+ * registers in the new mode of operation must be reprogrammed as they
+ * would be after a power-on reset.
+ */
+
+/** Maximum number of Periodic FIFOs */
+#define MAX_PERIO_FIFOS 15
+/** Maximum number of Transmit FIFOs */
+#define MAX_TX_FIFOS 15
+
+/** Maximum number of Endpoints/HostChannels */
+#define MAX_EPS_CHANNELS 16
+
+/****************************************************************************/
+/** DWC_otg Core registers .
+ * The dwc_otg_core_global_regs structure defines the size
+ * and relative field offsets for the Core Global registers.
+ */
+typedef struct dwc_otg_core_global_regs
+{
+ /** OTG Control and Status Register. <i>Offset: 000h</i> */
+ volatile uint32_t gotgctl;
+ /** OTG Interrupt Register. <i>Offset: 004h</i> */
+ volatile uint32_t gotgint;
+ /**Core AHB Configuration Register. <i>Offset: 008h</i> */
+ volatile uint32_t gahbcfg;
+
+#define DWC_GLBINTRMASK 0x0001
+#define DWC_DMAENABLE 0x0020
+#define DWC_NPTXEMPTYLVL_EMPTY 0x0080
+#define DWC_NPTXEMPTYLVL_HALFEMPTY 0x0000
+#define DWC_PTXEMPTYLVL_EMPTY 0x0100
+#define DWC_PTXEMPTYLVL_HALFEMPTY 0x0000
+
+ /**Core USB Configuration Register. <i>Offset: 00Ch</i> */
+ volatile uint32_t gusbcfg;
+ /**Core Reset Register. <i>Offset: 010h</i> */
+ volatile uint32_t grstctl;
+ /**Core Interrupt Register. <i>Offset: 014h</i> */
+ volatile uint32_t gintsts;
+ /**Core Interrupt Mask Register. <i>Offset: 018h</i> */
+ volatile uint32_t gintmsk;
+ /**Receive Status Queue Read Register (Read Only). <i>Offset: 01Ch</i> */
+ volatile uint32_t grxstsr;
+ /**Receive Status Queue Read & POP Register (Read Only). <i>Offset: 020h</i>*/
+ volatile uint32_t grxstsp;
+ /**Receive FIFO Size Register. <i>Offset: 024h</i> */
+ volatile uint32_t grxfsiz;
+ /**Non Periodic Transmit FIFO Size Register. <i>Offset: 028h</i> */
+ volatile uint32_t gnptxfsiz;
+ /**Non Periodic Transmit FIFO/Queue Status Register (Read
+ * Only). <i>Offset: 02Ch</i> */
+ volatile uint32_t gnptxsts;
+ /**I2C Access Register. <i>Offset: 030h</i> */
+ volatile uint32_t gi2cctl;
+ /**PHY Vendor Control Register. <i>Offset: 034h</i> */
+ volatile uint32_t gpvndctl;
+ /**General Purpose Input/Output Register. <i>Offset: 038h</i> */
+ volatile uint32_t ggpio;
+ /**User ID Register. <i>Offset: 03Ch</i> */
+ volatile uint32_t guid;
+ /**Synopsys ID Register (Read Only). <i>Offset: 040h</i> */
+ volatile uint32_t gsnpsid;
+ /**User HW Config1 Register (Read Only). <i>Offset: 044h</i> */
+ volatile uint32_t ghwcfg1;
+ /**User HW Config2 Register (Read Only). <i>Offset: 048h</i> */
+ volatile uint32_t ghwcfg2;
+#define DWC_SLAVE_ONLY_ARCH 0
+#define DWC_EXT_DMA_ARCH 1
+#define DWC_INT_DMA_ARCH 2
+
+#define DWC_MODE_HNP_SRP_CAPABLE 0
+#define DWC_MODE_SRP_ONLY_CAPABLE 1
+#define DWC_MODE_NO_HNP_SRP_CAPABLE 2
+#define DWC_MODE_SRP_CAPABLE_DEVICE 3
+#define DWC_MODE_NO_SRP_CAPABLE_DEVICE 4
+#define DWC_MODE_SRP_CAPABLE_HOST 5
+#define DWC_MODE_NO_SRP_CAPABLE_HOST 6
+
+ /**User HW Config3 Register (Read Only). <i>Offset: 04Ch</i> */
+ volatile uint32_t ghwcfg3;
+ /**User HW Config4 Register (Read Only). <i>Offset: 050h</i>*/
+ volatile uint32_t ghwcfg4;
+ /** Reserved <i>Offset: 054h-0FFh</i> */
+ volatile uint32_t reserved[43];
+ /** Host Periodic Transmit FIFO Size Register. <i>Offset: 100h</i> */
+ volatile uint32_t hptxfsiz;
+ /** Device Periodic Transmit FIFO#n Register if dedicated fifos are disabled,
+ otherwise Device Transmit FIFO#n Register.
+ * <i>Offset: 104h + (FIFO_Number-1)*04h, 1 <= FIFO Number <= 15 (1<=n<=15).</i> */
+ volatile uint32_t dptxfsiz_dieptxf[15];
+} dwc_otg_core_global_regs_t;
+
+/**
+ * This union represents the bit fields of the Core OTG Control
+ * and Status Register (GOTGCTL). Set the bits using the bit
+ * fields then write the <i>d32</i> value to the register.
+ */
+typedef union gotgctl_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned sesreqscs : 1;
+ unsigned sesreq : 1;
+ unsigned reserved2_7 : 6;
+ unsigned hstnegscs : 1;
+ unsigned hnpreq : 1;
+ unsigned hstsethnpen : 1;
+ unsigned devhnpen : 1;
+ unsigned reserved12_15 : 4;
+ unsigned conidsts : 1;
+ unsigned reserved17 : 1;
+ unsigned asesvld : 1;
+ unsigned bsesvld : 1;
+ unsigned currmod : 1;
+ unsigned reserved21_31 : 11;
+ } b;
+} gotgctl_data_t;
+
+/**
+ * This union represents the bit fields of the Core OTG Interrupt Register
+ * (GOTGINT). Set/clear the bits using the bit fields then write the <i>d32</i>
+ * value to the register.
+ */
+typedef union gotgint_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /** Current Mode */
+ unsigned reserved0_1 : 2;
+
+ /** Session End Detected */
+ unsigned sesenddet : 1;
+
+ unsigned reserved3_7 : 5;
+
+ /** Session Request Success Status Change */
+ unsigned sesreqsucstschng : 1;
+ /** Host Negotiation Success Status Change */
+ unsigned hstnegsucstschng : 1;
+
+ unsigned reserver10_16 : 7;
+
+ /** Host Negotiation Detected */
+ unsigned hstnegdet : 1;
+ /** A-Device Timeout Change */
+ unsigned adevtoutchng : 1;
+ /** Debounce Done */
+ unsigned debdone : 1;
+
+ unsigned reserved31_20 : 12;
+
+ } b;
+} gotgint_data_t;
+
+
+/**
+ * This union represents the bit fields of the Core AHB Configuration
+ * Register (GAHBCFG). Set/clear the bits using the bit fields then
+ * write the <i>d32</i> value to the register.
+ */
+typedef union gahbcfg_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned glblintrmsk : 1;
+#define DWC_GAHBCFG_GLBINT_ENABLE 1
+
+ unsigned hburstlen : 4;
+#define DWC_GAHBCFG_INT_DMA_BURST_SINGLE 0
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR 1
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR4 3
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR8 5
+#define DWC_GAHBCFG_INT_DMA_BURST_INCR16 7
+
+ unsigned dmaenable : 1;
+#define DWC_GAHBCFG_DMAENABLE 1
+ unsigned reserved : 1;
+ unsigned nptxfemplvl_txfemplvl : 1;
+ unsigned ptxfemplvl : 1;
+#define DWC_GAHBCFG_TXFEMPTYLVL_EMPTY 1
+#define DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY 0
+ unsigned reserved9_31 : 23;
+ } b;
+} gahbcfg_data_t;
+
+/**
+ * This union represents the bit fields of the Core USB Configuration
+ * Register (GUSBCFG). Set the bits using the bit fields then write
+ * the <i>d32</i> value to the register.
+ */
+typedef union gusbcfg_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned toutcal : 3;
+ unsigned phyif : 1;
+ unsigned ulpi_utmi_sel : 1;
+ unsigned fsintf : 1;
+ unsigned physel : 1;
+ unsigned ddrsel : 1;
+ unsigned srpcap : 1;
+ unsigned hnpcap : 1;
+ unsigned usbtrdtim : 4;
+ unsigned nptxfrwnden : 1;
+ unsigned phylpwrclksel : 1;
+ unsigned otgutmifssel : 1;
+ unsigned ulpi_fsls : 1;
+ unsigned ulpi_auto_res : 1;
+ unsigned ulpi_clk_sus_m : 1;
+ unsigned ulpi_ext_vbus_drv : 1;
+ unsigned ulpi_int_vbus_indicator : 1;
+ unsigned term_sel_dl_pulse : 1;
+ unsigned reserved23_27 : 5;
+ unsigned tx_end_delay : 1;
+ unsigned reserved29_31 : 3;
+ } b;
+} gusbcfg_data_t;
+
+/**
+ * This union represents the bit fields of the Core Reset Register
+ * (GRSTCTL). Set/clear the bits using the bit fields then write the
+ * <i>d32</i> value to the register.
+ */
+typedef union grstctl_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /** Core Soft Reset (CSftRst) (Device and Host)
+ *
+ * The application can flush the control logic in the
+ * entire core using this bit. This bit resets the
+ * pipelines in the AHB Clock domain as well as the
+ * PHY Clock domain.
+ *
+ * The state machines are reset to an IDLE state, the
+ * control bits in the CSRs are cleared, all the
+ * transmit FIFOs and the receive FIFO are flushed.
+ *
+ * The status mask bits that control the generation of
+ * the interrupt, are cleared, to clear the
+ * interrupt. The interrupt status bits are not
+ * cleared, so the application can get the status of
+ * any events that occurred in the core after it has
+ * set this bit.
+ *
+ * Any transactions on the AHB are terminated as soon
+ * as possible following the protocol. Any
+ * transactions on the USB are terminated immediately.
+ *
+ * The configuration settings in the CSRs are
+ * unchanged, so the software doesn't have to
+ * reprogram these registers (Device
+ * Configuration/Host Configuration/Core System
+ * Configuration/Core PHY Configuration).
+ *
+ * The application can write to this bit, any time it
+ * wants to reset the core. This is a self clearing
+ * bit and the core clears this bit after all the
+ * necessary logic is reset in the core, which may
+ * take several clocks, depending on the current state
+ * of the core.
+ */
+ unsigned csftrst : 1;
+ /** Hclk Soft Reset
+ *
+ * The application uses this bit to reset the control logic in
+ * the AHB clock domain. Only AHB clock domain pipelines are
+ * reset.
+ */
+ unsigned hsftrst : 1;
+ /** Host Frame Counter Reset (Host Only)<br>
+ *
+ * The application can reset the (micro)frame number
+ * counter inside the core, using this bit. When the
+ * (micro)frame counter is reset, the subsequent SOF
+ * sent out by the core, will have a (micro)frame
+ * number of 0.
+ */
+ unsigned hstfrm : 1;
+ /** In Token Sequence Learning Queue Flush
+ * (INTknQFlsh) (Device Only)
+ */
+ unsigned intknqflsh : 1;
+ /** RxFIFO Flush (RxFFlsh) (Device and Host)
+ *
+ * The application can flush the entire Receive FIFO
+ * using this bit. <p>The application must first
+ * ensure that the core is not in the middle of a
+ * transaction. <p>The application should write into
+ * this bit, only after making sure that neither the
+ * DMA engine is reading from the RxFIFO nor the MAC
+ * is writing the data in to the FIFO. <p>The
+ * application should wait until the bit is cleared
+ * before performing any other operations. This bit
+ * will takes 8 clocks (slowest of PHY or AHB clock)
+ * to clear.
+ */
+ unsigned rxfflsh : 1;
+ /** TxFIFO Flush (TxFFlsh) (Device and Host).
+ *
+ * This bit is used to selectively flush a single or
+ * all transmit FIFOs. The application must first
+ * ensure that the core is not in the middle of a
+ * transaction. <p>The application should write into
+ * this bit, only after making sure that neither the
+ * DMA engine is writing into the TxFIFO nor the MAC
+ * is reading the data out of the FIFO. <p>The
+ * application should wait until the core clears this
+ * bit, before performing any operations. This bit
+ * will takes 8 clocks (slowest of PHY or AHB clock)
+ * to clear.
+ */
+ unsigned txfflsh : 1;
+
+ /** TxFIFO Number (TxFNum) (Device and Host).
+ *
+ * This is the FIFO number which needs to be flushed,
+ * using the TxFIFO Flush bit. This field should not
+ * be changed until the TxFIFO Flush bit is cleared by
+ * the core.
+ * - 0x0 : Non Periodic TxFIFO Flush
+ * - 0x1 : Periodic TxFIFO #1 Flush in device mode
+ * or Periodic TxFIFO in host mode
+ * - 0x2 : Periodic TxFIFO #2 Flush in device mode.
+ * - ...
+ * - 0xF : Periodic TxFIFO #15 Flush in device mode
+ * - 0x10: Flush all the Transmit NonPeriodic and
+ * Transmit Periodic FIFOs in the core
+ */
+ unsigned txfnum : 5;
+ /** Reserved */
+ unsigned reserved11_29 : 19;
+ /** DMA Request Signal. Indicated DMA request is in
+ * probress. Used for debug purpose. */
+ unsigned dmareq : 1;
+ /** AHB Master Idle. Indicates the AHB Master State
+ * Machine is in IDLE condition. */
+ unsigned ahbidle : 1;
+ } b;
+} grstctl_t;
+
+
+/**
+ * This union represents the bit fields of the Core Interrupt Mask
+ * Register (GINTMSK). Set/clear the bits using the bit fields then
+ * write the <i>d32</i> value to the register.
+ */
+typedef union gintmsk_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned reserved0 : 1;
+ unsigned modemismatch : 1;
+ unsigned otgintr : 1;
+ unsigned sofintr : 1;
+ unsigned rxstsqlvl : 1;
+ unsigned nptxfempty : 1;
+ unsigned ginnakeff : 1;
+ unsigned goutnakeff : 1;
+ unsigned reserved8 : 1;
+ unsigned i2cintr : 1;
+ unsigned erlysuspend : 1;
+ unsigned usbsuspend : 1;
+ unsigned usbreset : 1;
+ unsigned enumdone : 1;
+ unsigned isooutdrop : 1;
+ unsigned eopframe : 1;
+ unsigned reserved16 : 1;
+ unsigned epmismatch : 1;
+ unsigned inepintr : 1;
+ unsigned outepintr : 1;
+ unsigned incomplisoin : 1;
+ unsigned incomplisoout : 1;
+ unsigned reserved22_23 : 2;
+ unsigned portintr : 1;
+ unsigned hcintr : 1;
+ unsigned ptxfempty : 1;
+ unsigned reserved27 : 1;
+ unsigned conidstschng : 1;
+ unsigned disconnect : 1;
+ unsigned sessreqintr : 1;
+ unsigned wkupintr : 1;
+ } b;
+} gintmsk_data_t;
+/**
+ * This union represents the bit fields of the Core Interrupt Register
+ * (GINTSTS). Set/clear the bits using the bit fields then write the
+ * <i>d32</i> value to the register.
+ */
+typedef union gintsts_data
+{
+ /** raw register data */
+ uint32_t d32;
+#define DWC_SOF_INTR_MASK 0x0008
+ /** register bits */
+ struct
+ {
+#define DWC_HOST_MODE 1
+ unsigned curmode : 1;
+ unsigned modemismatch : 1;
+ unsigned otgintr : 1;
+ unsigned sofintr : 1;
+ unsigned rxstsqlvl : 1;
+ unsigned nptxfempty : 1;
+ unsigned ginnakeff : 1;
+ unsigned goutnakeff : 1;
+ unsigned reserved8 : 1;
+ unsigned i2cintr : 1;
+ unsigned erlysuspend : 1;
+ unsigned usbsuspend : 1;
+ unsigned usbreset : 1;
+ unsigned enumdone : 1;
+ unsigned isooutdrop : 1;
+ unsigned eopframe : 1;
+ unsigned intokenrx : 1;
+ unsigned epmismatch : 1;
+ unsigned inepint: 1;
+ unsigned outepintr : 1;
+ unsigned incomplisoin : 1;
+ unsigned incomplisoout : 1;
+ unsigned reserved22_23 : 2;
+ unsigned portintr : 1;
+ unsigned hcintr : 1;
+ unsigned ptxfempty : 1;
+ unsigned reserved27 : 1;
+ unsigned conidstschng : 1;
+ unsigned disconnect : 1;
+ unsigned sessreqintr : 1;
+ unsigned wkupintr : 1;
+ } b;
+} gintsts_data_t;
+
+
+/**
+ * This union represents the bit fields in the Device Receive Status Read and
+ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i>
+ * element then read out the bits using the <i>b</i>it elements.
+ */
+typedef union device_grxsts_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned epnum : 4;
+ unsigned bcnt : 11;
+ unsigned dpid : 2;
+
+#define DWC_STS_DATA_UPDT 0x2 // OUT Data Packet
+#define DWC_STS_XFER_COMP 0x3 // OUT Data Transfer Complete
+
+#define DWC_DSTS_GOUT_NAK 0x1 // Global OUT NAK
+#define DWC_DSTS_SETUP_COMP 0x4 // Setup Phase Complete
+#define DWC_DSTS_SETUP_UPDT 0x6 // SETUP Packet
+ unsigned pktsts : 4;
+ unsigned fn : 4;
+ unsigned reserved : 7;
+ } b;
+} device_grxsts_data_t;
+
+/**
+ * This union represents the bit fields in the Host Receive Status Read and
+ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i>
+ * element then read out the bits using the <i>b</i>it elements.
+ */
+typedef union host_grxsts_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned chnum : 4;
+ unsigned bcnt : 11;
+ unsigned dpid : 2;
+
+ unsigned pktsts : 4;
+#define DWC_GRXSTS_PKTSTS_IN 0x2
+#define DWC_GRXSTS_PKTSTS_IN_XFER_COMP 0x3
+#define DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR 0x5
+#define DWC_GRXSTS_PKTSTS_CH_HALTED 0x7
+
+ unsigned reserved : 11;
+ } b;
+} host_grxsts_data_t;
+
+/**
+ * This union represents the bit fields in the FIFO Size Registers (HPTXFSIZ,
+ * GNPTXFSIZ, DPTXFSIZn, DIEPTXFn). Read the register into the <i>d32</i> element then
+ * read out the bits using the <i>b</i>it elements.
+ */
+typedef union fifosize_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned startaddr : 16;
+ unsigned depth : 16;
+ } b;
+} fifosize_data_t;
+
+/**
+ * This union represents the bit fields in the Non-Periodic Transmit
+ * FIFO/Queue Status Register (GNPTXSTS). Read the register into the
+ * <i>d32</i> element then read out the bits using the <i>b</i>it
+ * elements.
+ */
+typedef union gnptxsts_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned nptxfspcavail : 16;
+ unsigned nptxqspcavail : 8;
+ /** Top of the Non-Periodic Transmit Request Queue
+ * - bit 24 - Terminate (Last entry for the selected
+ * channel/EP)
+ * - bits 26:25 - Token Type
+ * - 2'b00 - IN/OUT
+ * - 2'b01 - Zero Length OUT
+ * - 2'b10 - PING/Complete Split
+ * - 2'b11 - Channel Halt
+ * - bits 30:27 - Channel/EP Number
+ */
+ unsigned nptxqtop_terminate : 1;
+ unsigned nptxqtop_token : 2;
+ unsigned nptxqtop_chnep : 4;
+ unsigned reserved : 1;
+ } b;
+} gnptxsts_data_t;
+
+/**
+ * This union represents the bit fields in the Transmit
+ * FIFO Status Register (DTXFSTS). Read the register into the
+ * <i>d32</i> element then read out the bits using the <i>b</i>it
+ * elements.
+ */
+typedef union dtxfsts_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned txfspcavail : 16;
+ unsigned reserved : 16;
+ } b;
+} dtxfsts_data_t;
+
+/**
+ * This union represents the bit fields in the I2C Control Register
+ * (I2CCTL). Read the register into the <i>d32</i> element then read out the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union gi2cctl_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned rwdata : 8;
+ unsigned regaddr : 8;
+ unsigned addr : 7;
+ unsigned i2cen : 1;
+ unsigned ack : 1;
+ unsigned i2csuspctl : 1;
+ unsigned i2cdevaddr : 2;
+ unsigned reserved : 2;
+ unsigned rw : 1;
+ unsigned bsydne : 1;
+ } b;
+} gi2cctl_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config1
+ * Register. Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg1_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned ep_dir0 : 2;
+ unsigned ep_dir1 : 2;
+ unsigned ep_dir2 : 2;
+ unsigned ep_dir3 : 2;
+ unsigned ep_dir4 : 2;
+ unsigned ep_dir5 : 2;
+ unsigned ep_dir6 : 2;
+ unsigned ep_dir7 : 2;
+ unsigned ep_dir8 : 2;
+ unsigned ep_dir9 : 2;
+ unsigned ep_dir10 : 2;
+ unsigned ep_dir11 : 2;
+ unsigned ep_dir12 : 2;
+ unsigned ep_dir13 : 2;
+ unsigned ep_dir14 : 2;
+ unsigned ep_dir15 : 2;
+ } b;
+} hwcfg1_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config2
+ * Register. Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg2_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /* GHWCFG2 */
+ unsigned op_mode : 3;
+#define DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG 0
+#define DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG 1
+#define DWC_HWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE_OTG 2
+#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE 3
+#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE 4
+#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST 5
+#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST 6
+
+ unsigned architecture : 2;
+ unsigned point2point : 1;
+ unsigned hs_phy_type : 2;
+#define DWC_HWCFG2_HS_PHY_TYPE_NOT_SUPPORTED 0
+#define DWC_HWCFG2_HS_PHY_TYPE_UTMI 1
+#define DWC_HWCFG2_HS_PHY_TYPE_ULPI 2
+#define DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI 3
+
+ unsigned fs_phy_type : 2;
+ unsigned num_dev_ep : 4;
+ unsigned num_host_chan : 4;
+ unsigned perio_ep_supported : 1;
+ unsigned dynamic_fifo : 1;
+ unsigned multi_proc_int : 1;
+ unsigned reserved21 : 1;
+ unsigned nonperio_tx_q_depth : 2;
+ unsigned host_perio_tx_q_depth : 2;
+ unsigned dev_token_q_depth : 5;
+ unsigned reserved31 : 1;
+ } b;
+} hwcfg2_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config3
+ * Register. Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg3_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /* GHWCFG3 */
+ unsigned xfer_size_cntr_width : 4;
+ unsigned packet_size_cntr_width : 3;
+ unsigned otg_func : 1;
+ unsigned i2c : 1;
+ unsigned vendor_ctrl_if : 1;
+ unsigned optional_features : 1;
+ unsigned synch_reset_type : 1;
+ unsigned ahb_phy_clock_synch : 1;
+ unsigned reserved15_13 : 3;
+ unsigned dfifo_depth : 16;
+ } b;
+} hwcfg3_data_t;
+
+/**
+ * This union represents the bit fields in the User HW Config4
+ * Register. Read the register into the <i>d32</i> element then read
+ * out the bits using the <i>b</i>it elements.
+ */
+typedef union hwcfg4_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned num_dev_perio_in_ep : 4;
+ unsigned power_optimiz : 1;
+ unsigned min_ahb_freq : 9;
+ unsigned utmi_phy_data_width : 2;
+ unsigned num_dev_mode_ctrl_ep : 4;
+ unsigned iddig_filt_en : 1;
+ unsigned vbus_valid_filt_en : 1;
+ unsigned a_valid_filt_en : 1;
+ unsigned b_valid_filt_en : 1;
+ unsigned session_end_filt_en : 1;
+ unsigned ded_fifo_en : 1;
+ unsigned num_in_eps : 4;
+ unsigned desc_dma : 1;
+ unsigned desc_dma_dyn : 1;
+ } b;
+} hwcfg4_data_t;
+
+////////////////////////////////////////////
+// Device Registers
+/**
+ * Device Global Registers. <i>Offsets 800h-BFFh</i>
+ *
+ * The following structures define the size and relative field offsets
+ * for the Device Mode Registers.
+ *
+ * <i>These registers are visible only in Device mode and must not be
+ * accessed in Host mode, as the results are unknown.</i>
+ */
+typedef struct dwc_otg_dev_global_regs
+{
+ /** Device Configuration Register. <i>Offset 800h</i> */
+ volatile uint32_t dcfg;
+ /** Device Control Register. <i>Offset: 804h</i> */
+ volatile uint32_t dctl;
+ /** Device Status Register (Read Only). <i>Offset: 808h</i> */
+ volatile uint32_t dsts;
+ /** Reserved. <i>Offset: 80Ch</i> */
+ uint32_t unused;
+ /** Device IN Endpoint Common Interrupt Mask
+ * Register. <i>Offset: 810h</i> */
+ volatile uint32_t diepmsk;
+ /** Device OUT Endpoint Common Interrupt Mask
+ * Register. <i>Offset: 814h</i> */
+ volatile uint32_t doepmsk;
+ /** Device All Endpoints Interrupt Register. <i>Offset: 818h</i> */
+ volatile uint32_t daint;
+ /** Device All Endpoints Interrupt Mask Register. <i>Offset:
+ * 81Ch</i> */
+ volatile uint32_t daintmsk;
+ /** Device IN Token Queue Read Register-1 (Read Only).
+ * <i>Offset: 820h</i> */
+ volatile uint32_t dtknqr1;
+ /** Device IN Token Queue Read Register-2 (Read Only).
+ * <i>Offset: 824h</i> */
+ volatile uint32_t dtknqr2;
+ /** Device VBUS discharge Register. <i>Offset: 828h</i> */
+ volatile uint32_t dvbusdis;
+ /** Device VBUS Pulse Register. <i>Offset: 82Ch</i> */
+ volatile uint32_t dvbuspulse;
+ /** Device IN Token Queue Read Register-3 (Read Only). /
+ * Device Thresholding control register (Read/Write)
+ * <i>Offset: 830h</i> */
+ volatile uint32_t dtknqr3_dthrctl;
+ /** Device IN Token Queue Read Register-4 (Read Only). /
+ * Device IN EPs empty Inr. Mask Register (Read/Write)
+ * <i>Offset: 834h</i> */
+ volatile uint32_t dtknqr4_fifoemptymsk;
+ /** Device Each Endpoint Interrupt Register (Read Only). /
+ * <i>Offset: 838h</i> */
+ volatile uint32_t deachint;
+ /** Device Each Endpoint Interrupt mask Register (Read/Write). /
+ * <i>Offset: 83Ch</i> */
+ volatile uint32_t deachintmsk;
+ /** Device Each In Endpoint Interrupt mask Register (Read/Write). /
+ * <i>Offset: 840h</i> */
+ volatile uint32_t diepeachintmsk[MAX_EPS_CHANNELS];
+ /** Device Each Out Endpoint Interrupt mask Register (Read/Write). /
+ * <i>Offset: 880h</i> */
+ volatile uint32_t doepeachintmsk[MAX_EPS_CHANNELS];
+} dwc_otg_device_global_regs_t;
+
+/**
+ * This union represents the bit fields in the Device Configuration
+ * Register. Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements. Write the
+ * <i>d32</i> member to the dcfg register.
+ */
+typedef union dcfg_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /** Device Speed */
+ unsigned devspd : 2;
+ /** Non Zero Length Status OUT Handshake */
+ unsigned nzstsouthshk : 1;
+#define DWC_DCFG_SEND_STALL 1
+
+ unsigned reserved3 : 1;
+ /** Device Addresses */
+ unsigned devaddr : 7;
+ /** Periodic Frame Interval */
+ unsigned perfrint : 2;
+#define DWC_DCFG_FRAME_INTERVAL_80 0
+#define DWC_DCFG_FRAME_INTERVAL_85 1
+#define DWC_DCFG_FRAME_INTERVAL_90 2
+#define DWC_DCFG_FRAME_INTERVAL_95 3
+
+ unsigned reserved13_17 : 5;
+ /** In Endpoint Mis-match count */
+ unsigned epmscnt : 5;
+ /** Enable Descriptor DMA in Device mode */
+ unsigned descdma : 1;
+ } b;
+} dcfg_data_t;
+
+/**
+ * This union represents the bit fields in the Device Control
+ * Register. Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union dctl_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /** Remote Wakeup */
+ unsigned rmtwkupsig : 1;
+ /** Soft Disconnect */
+ unsigned sftdiscon : 1;
+ /** Global Non-Periodic IN NAK Status */
+ unsigned gnpinnaksts : 1;
+ /** Global OUT NAK Status */
+ unsigned goutnaksts : 1;
+ /** Test Control */
+ unsigned tstctl : 3;
+ /** Set Global Non-Periodic IN NAK */
+ unsigned sgnpinnak : 1;
+ /** Clear Global Non-Periodic IN NAK */
+ unsigned cgnpinnak : 1;
+ /** Set Global OUT NAK */
+ unsigned sgoutnak : 1;
+ /** Clear Global OUT NAK */
+ unsigned cgoutnak : 1;
+
+ /** Power-On Programming Done */
+ unsigned pwronprgdone : 1;
+ /** Global Continue on BNA */
+ unsigned gcontbna : 1;
+ /** Global Multi Count */
+ unsigned gmc : 2;
+ /** Ignore Frame Number for ISOC EPs */
+ unsigned ifrmnum : 1;
+ /** NAK on Babble */
+ unsigned nakonbble : 1;
+
+ unsigned reserved16_31 : 16;
+ } b;
+} dctl_data_t;
+
+/**
+ * This union represents the bit fields in the Device Status
+ * Register. Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union dsts_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /** Suspend Status */
+ unsigned suspsts : 1;
+ /** Enumerated Speed */
+ unsigned enumspd : 2;
+#define DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ 0
+#define DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ 1
+#define DWC_DSTS_ENUMSPD_LS_PHY_6MHZ 2
+#define DWC_DSTS_ENUMSPD_FS_PHY_48MHZ 3
+ /** Erratic Error */
+ unsigned errticerr : 1;
+ unsigned reserved4_7: 4;
+ /** Frame or Microframe Number of the received SOF */
+ unsigned soffn : 14;
+ unsigned reserved22_31 : 10;
+ } b;
+} dsts_data_t;
+
+
+/**
+ * This union represents the bit fields in the Device IN EP Interrupt
+ * Register and the Device IN EP Common Mask Register.
+ *
+ * - Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union diepint_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /** Transfer complete mask */
+ unsigned xfercompl : 1;
+ /** Endpoint disable mask */
+ unsigned epdisabled : 1;
+ /** AHB Error mask */
+ unsigned ahberr : 1;
+ /** TimeOUT Handshake mask (non-ISOC EPs) */
+ unsigned timeout : 1;
+ /** IN Token received with TxF Empty mask */
+ unsigned intktxfemp : 1;
+ /** IN Token Received with EP mismatch mask */
+ unsigned intknepmis : 1;
+ /** IN Endpoint HAK Effective mask */
+ unsigned inepnakeff : 1;
+ /** IN Endpoint HAK Effective mask */
+ unsigned emptyintr : 1;
+
+ unsigned txfifoundrn : 1;
+
+ /** BNA Interrupt mask */
+ unsigned bna : 1;
+
+ unsigned reserved10_12 : 3;
+ /** BNA Interrupt mask */
+ unsigned nak : 1;
+
+ unsigned reserved14_31 : 18;
+ } b;
+} diepint_data_t;
+
+/**
+ * This union represents the bit fields in the Device IN EP
+ * Common/Dedicated Interrupt Mask Register.
+ */
+typedef union diepint_data diepmsk_data_t;
+
+/**
+ * This union represents the bit fields in the Device OUT EP Interrupt
+ * Registerand Device OUT EP Common Interrupt Mask Register.
+ *
+ * - Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union doepint_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /** Transfer complete */
+ unsigned xfercompl : 1;
+ /** Endpoint disable */
+ unsigned epdisabled : 1;
+ /** AHB Error */
+ unsigned ahberr : 1;
+ /** Setup Phase Done (contorl EPs) */
+ unsigned setup : 1;
+ /** OUT Token Received when Endpoint Disabled */
+ unsigned outtknepdis : 1;
+
+ unsigned stsphsercvd : 1;
+ /** Back-to-Back SETUP Packets Received */
+ unsigned back2backsetup : 1;
+
+ unsigned reserved7 : 1;
+ /** OUT packet Error */
+ unsigned outpkterr : 1;
+ /** BNA Interrupt */
+ unsigned bna : 1;
+
+ unsigned reserved10 : 1;
+ /** Packet Drop Status */
+ unsigned pktdrpsts : 1;
+ /** Babble Interrupt */
+ unsigned babble : 1;
+ /** NAK Interrupt */
+ unsigned nak : 1;
+ /** NYET Interrupt */
+ unsigned nyet : 1;
+
+ unsigned reserved15_31 : 17;
+ } b;
+} doepint_data_t;
+
+/**
+ * This union represents the bit fields in the Device OUT EP
+ * Common/Dedicated Interrupt Mask Register.
+ */
+typedef union doepint_data doepmsk_data_t;
+
+/**
+ * This union represents the bit fields in the Device All EP Interrupt
+ * and Mask Registers.
+ * - Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union daint_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /** IN Endpoint bits */
+ unsigned in : 16;
+ /** OUT Endpoint bits */
+ unsigned out : 16;
+ } ep;
+ struct
+ {
+ /** IN Endpoint bits */
+ unsigned inep0 : 1;
+ unsigned inep1 : 1;
+ unsigned inep2 : 1;
+ unsigned inep3 : 1;
+ unsigned inep4 : 1;
+ unsigned inep5 : 1;
+ unsigned inep6 : 1;
+ unsigned inep7 : 1;
+ unsigned inep8 : 1;
+ unsigned inep9 : 1;
+ unsigned inep10 : 1;
+ unsigned inep11 : 1;
+ unsigned inep12 : 1;
+ unsigned inep13 : 1;
+ unsigned inep14 : 1;
+ unsigned inep15 : 1;
+ /** OUT Endpoint bits */
+ unsigned outep0 : 1;
+ unsigned outep1 : 1;
+ unsigned outep2 : 1;
+ unsigned outep3 : 1;
+ unsigned outep4 : 1;
+ unsigned outep5 : 1;
+ unsigned outep6 : 1;
+ unsigned outep7 : 1;
+ unsigned outep8 : 1;
+ unsigned outep9 : 1;
+ unsigned outep10 : 1;
+ unsigned outep11 : 1;
+ unsigned outep12 : 1;
+ unsigned outep13 : 1;
+ unsigned outep14 : 1;
+ unsigned outep15 : 1;
+ } b;
+} daint_data_t;
+
+/**
+ * This union represents the bit fields in the Device IN Token Queue
+ * Read Registers.
+ * - Read the register into the <i>d32</i> member.
+ * - READ-ONLY Register
+ */
+typedef union dtknq1_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /** In Token Queue Write Pointer */
+ unsigned intknwptr : 5;
+ /** Reserved */
+ unsigned reserved05_06 : 2;
+ /** write pointer has wrapped. */
+ unsigned wrap_bit : 1;
+ /** EP Numbers of IN Tokens 0 ... 4 */
+ unsigned epnums0_5 : 24;
+ }b;
+} dtknq1_data_t;
+
+/**
+ * This union represents Threshold control Register
+ * - Read and write the register into the <i>d32</i> member.
+ * - READ-WRITABLE Register
+ */
+typedef union dthrctl_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /** non ISO Tx Thr. Enable */
+ unsigned non_iso_thr_en : 1;
+ /** ISO Tx Thr. Enable */
+ unsigned iso_thr_en : 1;
+ /** Tx Thr. Length */
+ unsigned tx_thr_len : 9;
+ /** Reserved */
+ unsigned reserved11_15 : 5;
+ /** Rx Thr. Enable */
+ unsigned rx_thr_en : 1;
+ /** Rx Thr. Length */
+ unsigned rx_thr_len : 9;
+ /** Reserved */
+ unsigned reserved26_31 : 6;
+ }b;
+} dthrctl_data_t;
+
+
+/**
+ * Device Logical IN Endpoint-Specific Registers. <i>Offsets
+ * 900h-AFCh</i>
+ *
+ * There will be one set of endpoint registers per logical endpoint
+ * implemented.
+ *
+ * <i>These registers are visible only in Device mode and must not be
+ * accessed in Host mode, as the results are unknown.</i>
+ */
+typedef struct dwc_otg_dev_in_ep_regs
+{
+ /** Device IN Endpoint Control Register. <i>Offset:900h +
+ * (ep_num * 20h) + 00h</i> */
+ volatile uint32_t diepctl;
+ /** Reserved. <i>Offset:900h + (ep_num * 20h) + 04h</i> */
+ uint32_t reserved04;
+ /** Device IN Endpoint Interrupt Register. <i>Offset:900h +
+ * (ep_num * 20h) + 08h</i> */
+ volatile uint32_t diepint;
+ /** Reserved. <i>Offset:900h + (ep_num * 20h) + 0Ch</i> */
+ uint32_t reserved0C;
+ /** Device IN Endpoint Transfer Size
+ * Register. <i>Offset:900h + (ep_num * 20h) + 10h</i> */
+ volatile uint32_t dieptsiz;
+ /** Device IN Endpoint DMA Address Register. <i>Offset:900h +
+ * (ep_num * 20h) + 14h</i> */
+ volatile uint32_t diepdma;
+ /** Device IN Endpoint Transmit FIFO Status Register. <i>Offset:900h +
+ * (ep_num * 20h) + 18h</i> */
+ volatile uint32_t dtxfsts;
+ /** Device IN Endpoint DMA Buffer Register. <i>Offset:900h +
+ * (ep_num * 20h) + 1Ch</i> */
+ volatile uint32_t diepdmab;
+} dwc_otg_dev_in_ep_regs_t;
+
+/**
+ * Device Logical OUT Endpoint-Specific Registers. <i>Offsets:
+ * B00h-CFCh</i>
+ *
+ * There will be one set of endpoint registers per logical endpoint
+ * implemented.
+ *
+ * <i>These registers are visible only in Device mode and must not be
+ * accessed in Host mode, as the results are unknown.</i>
+ */
+typedef struct dwc_otg_dev_out_ep_regs
+{
+ /** Device OUT Endpoint Control Register. <i>Offset:B00h +
+ * (ep_num * 20h) + 00h</i> */
+ volatile uint32_t doepctl;
+ /** Device OUT Endpoint Frame number Register. <i>Offset:
+ * B00h + (ep_num * 20h) + 04h</i> */
+ volatile uint32_t doepfn;
+ /** Device OUT Endpoint Interrupt Register. <i>Offset:B00h +
+ * (ep_num * 20h) + 08h</i> */
+ volatile uint32_t doepint;
+ /** Reserved. <i>Offset:B00h + (ep_num * 20h) + 0Ch</i> */
+ uint32_t reserved0C;
+ /** Device OUT Endpoint Transfer Size Register. <i>Offset:
+ * B00h + (ep_num * 20h) + 10h</i> */
+ volatile uint32_t doeptsiz;
+ /** Device OUT Endpoint DMA Address Register. <i>Offset:B00h
+ * + (ep_num * 20h) + 14h</i> */
+ volatile uint32_t doepdma;
+ /** Reserved. <i>Offset:B00h + * (ep_num * 20h) + 1Ch</i> */
+ uint32_t unused;
+ /** Device OUT Endpoint DMA Buffer Register. <i>Offset:B00h
+ * + (ep_num * 20h) + 1Ch</i> */
+ uint32_t doepdmab;
+} dwc_otg_dev_out_ep_regs_t;
+
+/**
+ * This union represents the bit fields in the Device EP Control
+ * Register. Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union depctl_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /** Maximum Packet Size
+ * IN/OUT EPn
+ * IN/OUT EP0 - 2 bits
+ * 2'b00: 64 Bytes
+ * 2'b01: 32
+ * 2'b10: 16
+ * 2'b11: 8 */
+ unsigned mps : 11;
+#define DWC_DEP0CTL_MPS_64 0
+#define DWC_DEP0CTL_MPS_32 1
+#define DWC_DEP0CTL_MPS_16 2
+#define DWC_DEP0CTL_MPS_8 3
+
+ /** Next Endpoint
+ * IN EPn/IN EP0
+ * OUT EPn/OUT EP0 - reserved */
+ unsigned nextep : 4;
+
+ /** USB Active Endpoint */
+ unsigned usbactep : 1;
+
+ /** Endpoint DPID (INTR/Bulk IN and OUT endpoints)
+ * This field contains the PID of the packet going to
+ * be received or transmitted on this endpoint. The
+ * application should program the PID of the first
+ * packet going to be received or transmitted on this
+ * endpoint , after the endpoint is
+ * activated. Application use the SetD1PID and
+ * SetD0PID fields of this register to program either
+ * D0 or D1 PID.
+ *
+ * The encoding for this field is
+ * - 0: D0
+ * - 1: D1
+ */
+ unsigned dpid : 1;
+
+ /** NAK Status */
+ unsigned naksts : 1;
+
+ /** Endpoint Type
+ * 2'b00: Control
+ * 2'b01: Isochronous
+ * 2'b10: Bulk
+ * 2'b11: Interrupt */
+ unsigned eptype : 2;
+
+ /** Snoop Mode
+ * OUT EPn/OUT EP0
+ * IN EPn/IN EP0 - reserved */
+ unsigned snp : 1;
+
+ /** Stall Handshake */
+ unsigned stall : 1;
+
+ /** Tx Fifo Number
+ * IN EPn/IN EP0
+ * OUT EPn/OUT EP0 - reserved */
+ unsigned txfnum : 4;
+
+ /** Clear NAK */
+ unsigned cnak : 1;
+ /** Set NAK */
+ unsigned snak : 1;
+ /** Set DATA0 PID (INTR/Bulk IN and OUT endpoints)
+ * Writing to this field sets the Endpoint DPID (DPID)
+ * field in this register to DATA0. Set Even
+ * (micro)frame (SetEvenFr) (ISO IN and OUT Endpoints)
+ * Writing to this field sets the Even/Odd
+ * (micro)frame (EO_FrNum) field to even (micro)
+ * frame.
+ */
+ unsigned setd0pid : 1;
+ /** Set DATA1 PID (INTR/Bulk IN and OUT endpoints)
+ * Writing to this field sets the Endpoint DPID (DPID)
+ * field in this register to DATA1 Set Odd
+ * (micro)frame (SetOddFr) (ISO IN and OUT Endpoints)
+ * Writing to this field sets the Even/Odd
+ * (micro)frame (EO_FrNum) field to odd (micro) frame.
+ */
+ unsigned setd1pid : 1;
+
+ /** Endpoint Disable */
+ unsigned epdis : 1;
+ /** Endpoint Enable */
+ unsigned epena : 1;
+ } b;
+} depctl_data_t;
+
+/**
+ * This union represents the bit fields in the Device EP Transfer
+ * Size Register. Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union deptsiz_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct {
+ /** Transfer size */
+ unsigned xfersize : 19;
+ /** Packet Count */
+ unsigned pktcnt : 10;
+ /** Multi Count - Periodic IN endpoints */
+ unsigned mc : 2;
+ unsigned reserved : 1;
+ } b;
+} deptsiz_data_t;
+
+/**
+ * This union represents the bit fields in the Device EP 0 Transfer
+ * Size Register. Read the register into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it elements.
+ */
+typedef union deptsiz0_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct {
+ /** Transfer size */
+ unsigned xfersize : 7;
+ /** Reserved */
+ unsigned reserved7_18 : 12;
+ /** Packet Count */
+ unsigned pktcnt : 1;
+ /** Reserved */
+ unsigned reserved20_28 : 9;
+ /**Setup Packet Count (DOEPTSIZ0 Only) */
+ unsigned supcnt : 2;
+ unsigned reserved31;
+ } b;
+} deptsiz0_data_t;
+
+
+/////////////////////////////////////////////////
+// DMA Descriptor Specific Structures
+//
+
+/** Buffer status definitions */
+
+#define BS_HOST_READY 0x0
+#define BS_DMA_BUSY 0x1
+#define BS_DMA_DONE 0x2
+#define BS_HOST_BUSY 0x3
+
+/** Receive/Transmit status definitions */
+
+#define RTS_SUCCESS 0x0
+#define RTS_BUFFLUSH 0x1
+#define RTS_RESERVED 0x2
+#define RTS_BUFERR 0x3
+
+
+/**
+ * This union represents the bit fields in the DMA Descriptor
+ * status quadlet. Read the quadlet into the <i>d32</i> member then
+ * set/clear the bits using the <i>b</i>it, <i>b_iso_out</i> and
+ * <i>b_iso_in</i> elements.
+ */
+typedef union desc_sts_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** quadlet bits */
+ struct {
+ /** Received number of bytes */
+ unsigned bytes : 16;
+
+ unsigned reserved16_22 : 7;
+ /** Multiple Transfer - only for OUT EPs */
+ unsigned mtrf : 1;
+ /** Setup Packet received - only for OUT EPs */
+ unsigned sr : 1;
+ /** Interrupt On Complete */
+ unsigned ioc : 1;
+ /** Short Packet */
+ unsigned sp : 1;
+ /** Last */
+ unsigned l : 1;
+ /** Receive Status */
+ unsigned sts : 2;
+ /** Buffer Status */
+ unsigned bs : 2;
+ } b;
+
+#ifdef DWC_EN_ISOC
+ /** iso out quadlet bits */
+ struct {
+ /** Received number of bytes */
+ unsigned rxbytes : 11;
+
+ unsigned reserved11 : 1;
+ /** Frame Number */
+ unsigned framenum : 11;
+ /** Received ISO Data PID */
+ unsigned pid : 2;
+ /** Interrupt On Complete */
+ unsigned ioc : 1;
+ /** Short Packet */
+ unsigned sp : 1;
+ /** Last */
+ unsigned l : 1;
+ /** Receive Status */
+ unsigned rxsts : 2;
+ /** Buffer Status */
+ unsigned bs : 2;
+ } b_iso_out;
+
+ /** iso in quadlet bits */
+ struct {
+ /** Transmited number of bytes */
+ unsigned txbytes : 12;
+ /** Frame Number */
+ unsigned framenum : 11;
+ /** Transmited ISO Data PID */
+ unsigned pid : 2;
+ /** Interrupt On Complete */
+ unsigned ioc : 1;
+ /** Short Packet */
+ unsigned sp : 1;
+ /** Last */
+ unsigned l : 1;
+ /** Transmit Status */
+ unsigned txsts : 2;
+ /** Buffer Status */
+ unsigned bs : 2;
+ } b_iso_in;
+#endif //DWC_EN_ISOC
+} desc_sts_data_t;
+
+/**
+ * DMA Descriptor structure
+ *
+ * DMA Descriptor structure contains two quadlets:
+ * Status quadlet and Data buffer pointer.
+ */
+typedef struct dwc_otg_dma_desc
+{
+ /** DMA Descriptor status quadlet */
+ desc_sts_data_t status;
+ /** DMA Descriptor data buffer pointer */
+ dma_addr_t buf;
+} dwc_otg_dma_desc_t;
+
+/**
+ * The dwc_otg_dev_if structure contains information needed to manage
+ * the DWC_otg controller acting in device mode. It represents the
+ * programming view of the device-specific aspects of the controller.
+ */
+typedef struct dwc_otg_dev_if
+{
+ /** Pointer to device Global registers.
+ * Device Global Registers starting at offset 800h
+ */
+ dwc_otg_device_global_regs_t *dev_global_regs;
+#define DWC_DEV_GLOBAL_REG_OFFSET 0x800
+
+ /**
+ * Device Logical IN Endpoint-Specific Registers 900h-AFCh
+ */
+ dwc_otg_dev_in_ep_regs_t *in_ep_regs[MAX_EPS_CHANNELS];
+#define DWC_DEV_IN_EP_REG_OFFSET 0x900
+#define DWC_EP_REG_OFFSET 0x20
+
+ /** Device Logical OUT Endpoint-Specific Registers B00h-CFCh */
+ dwc_otg_dev_out_ep_regs_t *out_ep_regs[MAX_EPS_CHANNELS];
+#define DWC_DEV_OUT_EP_REG_OFFSET 0xB00
+
+ /* Device configuration information*/
+ uint8_t speed; /**< Device Speed 0: Unknown, 1: LS, 2:FS, 3: HS */
+ uint8_t num_in_eps; /**< Number # of Tx EP range: 0-15 exept ep0 */
+ uint8_t num_out_eps; /**< Number # of Rx EP range: 0-15 exept ep 0*/
+
+ /** Size of periodic FIFOs (Bytes) */
+ uint16_t perio_tx_fifo_size[MAX_PERIO_FIFOS];
+
+ /** Size of Tx FIFOs (Bytes) */
+ uint16_t tx_fifo_size[MAX_TX_FIFOS];
+
+ /** Thresholding enable flags and length varaiables **/
+ uint16_t rx_thr_en;
+ uint16_t iso_tx_thr_en;
+ uint16_t non_iso_tx_thr_en;
+
+ uint16_t rx_thr_length;
+ uint16_t tx_thr_length;
+
+ /**
+ * Pointers to the DMA Descriptors for EP0 Control
+ * transfers (virtual and physical)
+ */
+
+ /** 2 descriptors for SETUP packets */
+ uint32_t dma_setup_desc_addr[2];
+ dwc_otg_dma_desc_t* setup_desc_addr[2];
+
+ /** Pointer to Descriptor with latest SETUP packet */
+ dwc_otg_dma_desc_t* psetup;
+
+ /** Index of current SETUP handler descriptor */
+ uint32_t setup_desc_index;
+
+ /** Descriptor for Data In or Status In phases */
+ uint32_t dma_in_desc_addr;
+ dwc_otg_dma_desc_t* in_desc_addr;;
+
+ /** Descriptor for Data Out or Status Out phases */
+ uint32_t dma_out_desc_addr;
+ dwc_otg_dma_desc_t* out_desc_addr;
+
+} dwc_otg_dev_if_t;
+
+
+
+
+/////////////////////////////////////////////////
+// Host Mode Register Structures
+//
+/**
+ * The Host Global Registers structure defines the size and relative
+ * field offsets for the Host Mode Global Registers. Host Global
+ * Registers offsets 400h-7FFh.
+*/
+typedef struct dwc_otg_host_global_regs
+{
+ /** Host Configuration Register. <i>Offset: 400h</i> */
+ volatile uint32_t hcfg;
+ /** Host Frame Interval Register. <i>Offset: 404h</i> */
+ volatile uint32_t hfir;
+ /** Host Frame Number / Frame Remaining Register. <i>Offset: 408h</i> */
+ volatile uint32_t hfnum;
+ /** Reserved. <i>Offset: 40Ch</i> */
+ uint32_t reserved40C;
+ /** Host Periodic Transmit FIFO/ Queue Status Register. <i>Offset: 410h</i> */
+ volatile uint32_t hptxsts;
+ /** Host All Channels Interrupt Register. <i>Offset: 414h</i> */
+ volatile uint32_t haint;
+ /** Host All Channels Interrupt Mask Register. <i>Offset: 418h</i> */
+ volatile uint32_t haintmsk;
+} dwc_otg_host_global_regs_t;
+
+/**
+ * This union represents the bit fields in the Host Configuration Register.
+ * Read the register into the <i>d32</i> member then set/clear the bits using
+ * the <i>b</i>it elements. Write the <i>d32</i> member to the hcfg register.
+ */
+typedef union hcfg_data
+{
+ /** raw register data */
+ uint32_t d32;
+
+ /** register bits */
+ struct
+ {
+ /** FS/LS Phy Clock Select */
+ unsigned fslspclksel : 2;
+#define DWC_HCFG_30_60_MHZ 0
+#define DWC_HCFG_48_MHZ 1
+#define DWC_HCFG_6_MHZ 2
+
+ /** FS/LS Only Support */
+ unsigned fslssupp : 1;
+ } b;
+} hcfg_data_t;
+
+/**
+ * This union represents the bit fields in the Host Frame Remaing/Number
+ * Register.
+ */
+typedef union hfir_data
+{
+ /** raw register data */
+ uint32_t d32;
+
+ /** register bits */
+ struct
+ {
+ unsigned frint : 16;
+ unsigned reserved : 16;
+ } b;
+} hfir_data_t;
+
+/**
+ * This union represents the bit fields in the Host Frame Remaing/Number
+ * Register.
+ */
+typedef union hfnum_data
+{
+ /** raw register data */
+ uint32_t d32;
+
+ /** register bits */
+ struct
+ {
+ unsigned frnum : 16;
+#define DWC_HFNUM_MAX_FRNUM 0x3FFF
+ unsigned frrem : 16;
+ } b;
+} hfnum_data_t;
+
+typedef union hptxsts_data
+{
+ /** raw register data */
+ uint32_t d32;
+
+ /** register bits */
+ struct
+ {
+ unsigned ptxfspcavail : 16;
+ unsigned ptxqspcavail : 8;
+ /** Top of the Periodic Transmit Request Queue
+ * - bit 24 - Terminate (last entry for the selected channel)
+ * - bits 26:25 - Token Type
+ * - 2'b00 - Zero length
+ * - 2'b01 - Ping
+ * - 2'b10 - Disable
+ * - bits 30:27 - Channel Number
+ * - bit 31 - Odd/even microframe
+ */
+ unsigned ptxqtop_terminate : 1;
+ unsigned ptxqtop_token : 2;
+ unsigned ptxqtop_chnum : 4;
+ unsigned ptxqtop_odd : 1;
+ } b;
+} hptxsts_data_t;
+
+/**
+ * This union represents the bit fields in the Host Port Control and Status
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hprt0 register.
+ */
+typedef union hprt0_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned prtconnsts : 1;
+ unsigned prtconndet : 1;
+ unsigned prtena : 1;
+ unsigned prtenchng : 1;
+ unsigned prtovrcurract : 1;
+ unsigned prtovrcurrchng : 1;
+ unsigned prtres : 1;
+ unsigned prtsusp : 1;
+ unsigned prtrst : 1;
+ unsigned reserved9 : 1;
+ unsigned prtlnsts : 2;
+ unsigned prtpwr : 1;
+ unsigned prttstctl : 4;
+ unsigned prtspd : 2;
+#define DWC_HPRT0_PRTSPD_HIGH_SPEED 0
+#define DWC_HPRT0_PRTSPD_FULL_SPEED 1
+#define DWC_HPRT0_PRTSPD_LOW_SPEED 2
+ unsigned reserved19_31 : 13;
+ } b;
+} hprt0_data_t;
+
+/**
+ * This union represents the bit fields in the Host All Interrupt
+ * Register.
+ */
+typedef union haint_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned ch0 : 1;
+ unsigned ch1 : 1;
+ unsigned ch2 : 1;
+ unsigned ch3 : 1;
+ unsigned ch4 : 1;
+ unsigned ch5 : 1;
+ unsigned ch6 : 1;
+ unsigned ch7 : 1;
+ unsigned ch8 : 1;
+ unsigned ch9 : 1;
+ unsigned ch10 : 1;
+ unsigned ch11 : 1;
+ unsigned ch12 : 1;
+ unsigned ch13 : 1;
+ unsigned ch14 : 1;
+ unsigned ch15 : 1;
+ unsigned reserved : 16;
+ } b;
+
+ struct
+ {
+ unsigned chint : 16;
+ unsigned reserved : 16;
+ } b2;
+} haint_data_t;
+
+/**
+ * This union represents the bit fields in the Host All Interrupt
+ * Register.
+ */
+typedef union haintmsk_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ unsigned ch0 : 1;
+ unsigned ch1 : 1;
+ unsigned ch2 : 1;
+ unsigned ch3 : 1;
+ unsigned ch4 : 1;
+ unsigned ch5 : 1;
+ unsigned ch6 : 1;
+ unsigned ch7 : 1;
+ unsigned ch8 : 1;
+ unsigned ch9 : 1;
+ unsigned ch10 : 1;
+ unsigned ch11 : 1;
+ unsigned ch12 : 1;
+ unsigned ch13 : 1;
+ unsigned ch14 : 1;
+ unsigned ch15 : 1;
+ unsigned reserved : 16;
+ } b;
+
+ struct
+ {
+ unsigned chint : 16;
+ unsigned reserved : 16;
+ } b2;
+} haintmsk_data_t;
+
+/**
+ * Host Channel Specific Registers. <i>500h-5FCh</i>
+ */
+typedef struct dwc_otg_hc_regs
+{
+ /** Host Channel 0 Characteristic Register. <i>Offset: 500h + (chan_num * 20h) + 00h</i> */
+ volatile uint32_t hcchar;
+ /** Host Channel 0 Split Control Register. <i>Offset: 500h + (chan_num * 20h) + 04h</i> */
+ volatile uint32_t hcsplt;
+ /** Host Channel 0 Interrupt Register. <i>Offset: 500h + (chan_num * 20h) + 08h</i> */
+ volatile uint32_t hcint;
+ /** Host Channel 0 Interrupt Mask Register. <i>Offset: 500h + (chan_num * 20h) + 0Ch</i> */
+ volatile uint32_t hcintmsk;
+ /** Host Channel 0 Transfer Size Register. <i>Offset: 500h + (chan_num * 20h) + 10h</i> */
+ volatile uint32_t hctsiz;
+ /** Host Channel 0 DMA Address Register. <i>Offset: 500h + (chan_num * 20h) + 14h</i> */
+ volatile uint32_t hcdma;
+ /** Reserved. <i>Offset: 500h + (chan_num * 20h) + 18h - 500h + (chan_num * 20h) + 1Ch</i> */
+ uint32_t reserved[2];
+} dwc_otg_hc_regs_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Characteristics
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hcchar register.
+ */
+typedef union hcchar_data
+{
+ /** raw register data */
+ uint32_t d32;
+
+ /** register bits */
+ struct
+ {
+ /** Maximum packet size in bytes */
+ unsigned mps : 11;
+
+ /** Endpoint number */
+ unsigned epnum : 4;
+
+ /** 0: OUT, 1: IN */
+ unsigned epdir : 1;
+
+ unsigned reserved : 1;
+
+ /** 0: Full/high speed device, 1: Low speed device */
+ unsigned lspddev : 1;
+
+ /** 0: Control, 1: Isoc, 2: Bulk, 3: Intr */
+ unsigned eptype : 2;
+
+ /** Packets per frame for periodic transfers. 0 is reserved. */
+ unsigned multicnt : 2;
+
+ /** Device address */
+ unsigned devaddr : 7;
+
+ /**
+ * Frame to transmit periodic transaction.
+ * 0: even, 1: odd
+ */
+ unsigned oddfrm : 1;
+
+ /** Channel disable */
+ unsigned chdis : 1;
+
+ /** Channel enable */
+ unsigned chen : 1;
+ } b;
+} hcchar_data_t;
+
+typedef union hcsplt_data
+{
+ /** raw register data */
+ uint32_t d32;
+
+ /** register bits */
+ struct
+ {
+ /** Port Address */
+ unsigned prtaddr : 7;
+
+ /** Hub Address */
+ unsigned hubaddr : 7;
+
+ /** Transaction Position */
+ unsigned xactpos : 2;
+#define DWC_HCSPLIT_XACTPOS_MID 0
+#define DWC_HCSPLIT_XACTPOS_END 1
+#define DWC_HCSPLIT_XACTPOS_BEGIN 2
+#define DWC_HCSPLIT_XACTPOS_ALL 3
+
+ /** Do Complete Split */
+ unsigned compsplt : 1;
+
+ /** Reserved */
+ unsigned reserved : 14;
+
+ /** Split Enble */
+ unsigned spltena : 1;
+ } b;
+} hcsplt_data_t;
+
+
+/**
+ * This union represents the bit fields in the Host All Interrupt
+ * Register.
+ */
+typedef union hcint_data
+{
+ /** raw register data */
+ uint32_t d32;
+ /** register bits */
+ struct
+ {
+ /** Transfer Complete */
+ unsigned xfercomp : 1;
+ /** Channel Halted */
+ unsigned chhltd : 1;
+ /** AHB Error */
+ unsigned ahberr : 1;
+ /** STALL Response Received */
+ unsigned stall : 1;
+ /** NAK Response Received */
+ unsigned nak : 1;
+ /** ACK Response Received */
+ unsigned ack : 1;
+ /** NYET Response Received */
+ unsigned nyet : 1;
+ /** Transaction Err */
+ unsigned xacterr : 1;
+ /** Babble Error */
+ unsigned bblerr : 1;
+ /** Frame Overrun */
+ unsigned frmovrun : 1;
+ /** Data Toggle Error */
+ unsigned datatglerr : 1;
+ /** Reserved */
+ unsigned reserved : 21;
+ } b;
+} hcint_data_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Transfer Size
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hcchar register.
+ */
+typedef union hctsiz_data
+{
+ /** raw register data */
+ uint32_t d32;
+
+ /** register bits */
+ struct
+ {
+ /** Total transfer size in bytes */
+ unsigned xfersize : 19;
+
+ /** Data packets to transfer */
+ unsigned pktcnt : 10;
+
+ /**
+ * Packet ID for next data packet
+ * 0: DATA0
+ * 1: DATA2
+ * 2: DATA1
+ * 3: MDATA (non-Control), SETUP (Control)
+ */
+ unsigned pid : 2;
+#define DWC_HCTSIZ_DATA0 0
+#define DWC_HCTSIZ_DATA1 2
+#define DWC_HCTSIZ_DATA2 1
+#define DWC_HCTSIZ_MDATA 3
+#define DWC_HCTSIZ_SETUP 3
+
+ /** Do PING protocol when 1 */
+ unsigned dopng : 1;
+ } b;
+} hctsiz_data_t;
+
+/**
+ * This union represents the bit fields in the Host Channel Interrupt Mask
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
+ * hcintmsk register.
+ */
+typedef union hcintmsk_data
+{
+ /** raw register data */
+ uint32_t d32;
+
+ /** register bits */
+ struct
+ {
+ unsigned xfercompl : 1;
+ unsigned chhltd : 1;
+ unsigned ahberr : 1;
+ unsigned stall : 1;
+ unsigned nak : 1;
+ unsigned ack : 1;
+ unsigned nyet : 1;
+ unsigned xacterr : 1;
+ unsigned bblerr : 1;
+ unsigned frmovrun : 1;
+ unsigned datatglerr : 1;
+ unsigned reserved : 21;
+ } b;
+} hcintmsk_data_t;
+
+/** OTG Host Interface Structure.
+ *
+ * The OTG Host Interface Structure structure contains information
+ * needed to manage the DWC_otg controller acting in host mode. It
+ * represents the programming view of the host-specific aspects of the
+ * controller.
+ */
+typedef struct dwc_otg_host_if
+{
+ /** Host Global Registers starting at offset 400h.*/
+ dwc_otg_host_global_regs_t *host_global_regs;
+#define DWC_OTG_HOST_GLOBAL_REG_OFFSET 0x400
+
+ /** Host Port 0 Control and Status Register */
+ volatile uint32_t *hprt0;
+#define DWC_OTG_HOST_PORT_REGS_OFFSET 0x440
+
+
+ /** Host Channel Specific Registers at offsets 500h-5FCh. */
+ dwc_otg_hc_regs_t *hc_regs[MAX_EPS_CHANNELS];
+#define DWC_OTG_HOST_CHAN_REGS_OFFSET 0x500
+#define DWC_OTG_CHAN_REGS_OFFSET 0x20
+
+
+ /* Host configuration information */
+ /** Number of Host Channels (range: 1-16) */
+ uint8_t num_host_channels;
+ /** Periodic EPs supported (0: no, 1: yes) */
+ uint8_t perio_eps_supported;
+ /** Periodic Tx FIFO Size (Only 1 host periodic Tx FIFO) */
+ uint16_t perio_tx_fifo_size;
+
+} dwc_otg_host_if_t;
+
+
+/**
+ * This union represents the bit fields in the Power and Clock Gating Control
+ * Register. Read the register into the <i>d32</i> member then set/clear the
+ * bits using the <i>b</i>it elements.
+ */
+typedef union pcgcctl_data
+{
+ /** raw register data */
+ uint32_t d32;
+
+ /** register bits */
+ struct
+ {
+ /** Stop Pclk */
+ unsigned stoppclk : 1;
+ /** Gate Hclk */
+ unsigned gatehclk : 1;
+ /** Power Clamp */
+ unsigned pwrclmp : 1;
+ /** Reset Power Down Modules */
+ unsigned rstpdwnmodule : 1;
+ /** PHY Suspended */
+ unsigned physuspended : 1;
+
+ unsigned reserved : 27;
+ } b;
+} pcgcctl_data_t;
+
+
+#endif
--- /dev/null
+/* ==========================================================================
+ * $File: //dwh/usb_iip/dev/software/otg/linux/platform/dwc_otg_plat.h $
+ * $Revision: 1.2 $
+ * $Date: 2008-11-21 05:39:16 $
+ * $Change: 1064915 $
+ *
+ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
+ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
+ * otherwise expressly agreed to in writing between Synopsys and you.
+ *
+ * The Software IS NOT an item of Licensed Software or Licensed Product under
+ * any End User Software License Agreement or Agreement for Licensed Product
+ * with Synopsys or any supplement thereto. You are permitted to use and
+ * redistribute this Software in source and binary forms, with or without
+ * modification, provided that redistributions of source code must retain this
+ * notice. You may not view, use, disclose, copy or distribute this file or
+ * any information contained herein except pursuant to this license grant from
+ * Synopsys. If you do not agree with this notice, including the disclaimer
+ * below, then you are not authorized to use the Software.
+ *
+ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * ========================================================================== */
+
+#if !defined(__DWC_OTG_PLAT_H__)
+#define __DWC_OTG_PLAT_H__
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+
+/**
+ * @file
+ *
+ * This file contains the Platform Specific constants, interfaces
+ * (functions and macros) for Linux.
+ *
+ */
+//#if !defined(__LINUX_ARM_ARCH__)
+//#error "The contents of this file is Linux specific!!!"
+//#endif
+
+/**
+ * Reads the content of a register.
+ *
+ * @param reg address of register to read.
+ * @return contents of the register.
+ *
+
+ * Usage:<br>
+ * <code>uint32_t dev_ctl = dwc_read_reg32(&dev_regs->dctl);</code>
+ */
+static __inline__ uint32_t dwc_read_reg32( volatile uint32_t *reg)
+{
+ return readl(reg);
+};
+
+/**
+ * Writes a register with a 32 bit value.
+ *
+ * @param reg address of register to read.
+ * @param value to write to _reg.
+ *
+ * Usage:<br>
+ * <code>dwc_write_reg32(&dev_regs->dctl, 0); </code>
+ */
+static __inline__ void dwc_write_reg32( volatile uint32_t *reg, const uint32_t value)
+{
+ writel( value, reg );
+};
+
+/**
+ * This function modifies bit values in a register. Using the
+ * algorithm: (reg_contents & ~clear_mask) | set_mask.
+ *
+ * @param reg address of register to read.
+ * @param clear_mask bit mask to be cleared.
+ * @param set_mask bit mask to be set.
+ *
+ * Usage:<br>
+ * <code> // Clear the SOF Interrupt Mask bit and <br>
+ * // set the OTG Interrupt mask bit, leaving all others as they were.
+ * dwc_modify_reg32(&dev_regs->gintmsk, DWC_SOF_INT, DWC_OTG_INT);</code>
+ */
+static __inline__
+ void dwc_modify_reg32( volatile uint32_t *reg, const uint32_t clear_mask, const uint32_t set_mask)
+{
+ writel( (readl(reg) & ~clear_mask) | set_mask, reg );
+};
+
+
+/**
+ * Wrapper for the OS micro-second delay function.
+ * @param[in] usecs Microseconds of delay
+ */
+static __inline__ void UDELAY( const uint32_t usecs )
+{
+ udelay( usecs );
+}
+
+/**
+ * Wrapper for the OS milli-second delay function.
+ * @param[in] msecs milliseconds of delay
+ */
+static __inline__ void MDELAY( const uint32_t msecs )
+{
+ mdelay( msecs );
+}
+
+/**
+ * Wrapper for the Linux spin_lock. On the ARM (Integrator)
+ * spin_lock() is a nop.
+ *
+ * @param lock Pointer to the spinlock.
+ */
+static __inline__ void SPIN_LOCK( spinlock_t *lock )
+{
+ spin_lock(lock);
+}
+
+/**
+ * Wrapper for the Linux spin_unlock. On the ARM (Integrator)
+ * spin_lock() is a nop.
+ *
+ * @param lock Pointer to the spinlock.
+ */
+static __inline__ void SPIN_UNLOCK( spinlock_t *lock )
+{
+ spin_unlock(lock);
+}
+
+/**
+ * Wrapper (macro) for the Linux spin_lock_irqsave. On the ARM
+ * (Integrator) spin_lock() is a nop.
+ *
+ * @param l Pointer to the spinlock.
+ * @param f unsigned long for irq flags storage.
+ */
+#define SPIN_LOCK_IRQSAVE( l, f ) spin_lock_irqsave(l,f);
+
+/**
+ * Wrapper (macro) for the Linux spin_unlock_irqrestore. On the ARM
+ * (Integrator) spin_lock() is a nop.
+ *
+ * @param l Pointer to the spinlock.
+ * @param f unsigned long for irq flags storage.
+ */
+#define SPIN_UNLOCK_IRQRESTORE( l,f ) spin_unlock_irqrestore(l,f);
+
+/*
+ * Debugging support vanishes in non-debug builds.
+ */
+
+
+/**
+ * The Debug Level bit-mask variable.
+ */
+extern uint32_t g_dbg_lvl;
+/**
+ * Set the Debug Level variable.
+ */
+static inline uint32_t SET_DEBUG_LEVEL( const uint32_t new )
+{
+ uint32_t old = g_dbg_lvl;
+ g_dbg_lvl = new;
+ return old;
+}
+
+/** When debug level has the DBG_CIL bit set, display CIL Debug messages. */
+#define DBG_CIL (0x2)
+/** When debug level has the DBG_CILV bit set, display CIL Verbose debug
+ * messages */
+#define DBG_CILV (0x20)
+/** When debug level has the DBG_PCD bit set, display PCD (Device) debug
+ * messages */
+#define DBG_PCD (0x4)
+/** When debug level has the DBG_PCDV set, display PCD (Device) Verbose debug
+ * messages */
+#define DBG_PCDV (0x40)
+/** When debug level has the DBG_HCD bit set, display Host debug messages */
+#define DBG_HCD (0x8)
+/** When debug level has the DBG_HCDV bit set, display Verbose Host debug
+ * messages */
+#define DBG_HCDV (0x80)
+/** When debug level has the DBG_HCD_URB bit set, display enqueued URBs in host
+ * mode. */
+#define DBG_HCD_URB (0x800)
+
+/** When debug level has any bit set, display debug messages */
+#define DBG_ANY (0xFF)
+
+/** All debug messages off */
+#define DBG_OFF 0
+
+/** Prefix string for DWC_DEBUG print macros. */
+#define USB_DWC "dwc_otg: "
+
+/**
+ * Print a debug message when the Global debug level variable contains
+ * the bit defined in <code>lvl</code>.
+ *
+ * @param[in] lvl - Debug level, use one of the DBG_ constants above.
+ * @param[in] x - like printf
+ *
+ * Example:<p>
+ * <code>
+ * DWC_DEBUGPL( DBG_ANY, "%s(%p)\n", __func__, _reg_base_addr);
+ * </code>
+ * <br>
+ * results in:<br>
+ * <code>
+ * usb-DWC_otg: dwc_otg_cil_init(ca867000)
+ * </code>
+ */
+#ifdef DEBUG
+
+# define DWC_DEBUGPL(lvl, x...) do{ if ((lvl)&g_dbg_lvl)printk( KERN_DEBUG USB_DWC x ); }while(0)
+# define DWC_DEBUGP(x...) DWC_DEBUGPL(DBG_ANY, x )
+
+# define CHK_DEBUG_LEVEL(level) ((level) & g_dbg_lvl)
+
+#else
+
+# define DWC_DEBUGPL(lvl, x...) do{}while(0)
+# define DWC_DEBUGP(x...)
+
+# define CHK_DEBUG_LEVEL(level) (0)
+
+#endif /*DEBUG*/
+
+/**
+ * Print an Error message.
+ */
+#define DWC_ERROR(x...) printk( KERN_ERR USB_DWC x )
+/**
+ * Print a Warning message.
+ */
+#define DWC_WARN(x...) printk( KERN_WARNING USB_DWC x )
+/**
+ * Print a notice (normal but significant message).
+ */
+#define DWC_NOTICE(x...) printk( KERN_NOTICE USB_DWC x )
+/**
+ * Basic message printing.
+ */
+#define DWC_PRINT(x...) printk( KERN_INFO USB_DWC x )
+
+#endif
+
--- /dev/null
+--- a/drivers/usb/Kconfig
++++ b/drivers/usb/Kconfig
+@@ -163,4 +163,6 @@
+
+ source "drivers/usb/otg/Kconfig"
+
++source "drivers/usb/dwc_otg/Kconfig"
++
+ endif # USB_SUPPORT
+--- a/drivers/usb/Makefile
++++ b/drivers/usb/Makefile
+@@ -45,3 +45,4 @@
+
+ obj-$(CONFIG_USB_ATM) += atm/
+ obj-$(CONFIG_USB_SPEEDTOUCH) += atm/
++obj-$(CONFIG_DWC_OTG) += dwc_otg/
CONFIG_CSRC_R4K_LIB=y
CONFIG_DECOMPRESS_LZMA=y
CONFIG_DMA_NONCOHERENT=y
+# CONFIG_DWC_OTG is not set
CONFIG_EARLY_PRINTK=y
CONFIG_GENERIC_ATOMIC64=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
# CONFIG_USB_ARCH_HAS_EHCI is not set
-# CONFIG_USB_ARCH_HAS_HCD is not set
# CONFIG_USB_ARCH_HAS_OHCI is not set
CONFIG_USB_SUPPORT=y
CONFIG_XZ_DEC=y
projects / openwrt / staging / thess.git / commitdiff