+++ /dev/null
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- *
- * This driver was originally based on the INCA-IP driver, but due to
- * fundamental conceptual drawbacks there has been changed a lot.
- *
- * Based on INCA-IP driver Copyright (c) 2003 Gary Jennejohn <gj@denx.de>
- * Based on the VxWorks drivers Copyright (c) 2002, Infineon Technologies.
- *
- * Copyright (C) 2006 infineon
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
- *
- */
-
-#define IFAP_EEPROM_DRV_VERSION "0.0.1"
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/major.h>
-#include <linux/string.h>
-#include <linux/fs.h>
-#include <linux/fcntl.h>
-#include <linux/ptrace.h>
-#include <linux/mm.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
-#include <linux/slab.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm/bitops.h>
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/version.h>
-
-#include <asm/ifxmips/ifxmips.h>
-#include <asm/ifxmips/ifxmips_irq.h>
-#include <asm/ifxmips/ifx_ssc_defines.h>
-#include <asm/ifxmips/ifx_ssc.h>
-
-/* allow the user to set the major device number */
-static int ifxmips_eeprom_maj = 0;
-
-extern int ifx_ssc_init (void);
-extern int ifx_ssc_open (struct inode *inode, struct file *filp);
-extern int ifx_ssc_close (struct inode *inode, struct file *filp);
-extern void ifx_ssc_cleanup_module (void);
-extern int ifx_ssc_ioctl (struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long data);
-extern ssize_t ifx_ssc_kwrite (int port, const char *kbuf, size_t len);
-extern ssize_t ifx_ssc_kread (int port, char *kbuf, size_t len);
-
-extern int ifx_ssc_cs_low (unsigned int pin);
-extern int ifx_ssc_cs_high (unsigned int pin);
-extern int ifx_ssc_txrx (char *tx_buf, unsigned int tx_len, char *rx_buf, unsigned int rx_len);
-extern int ifx_ssc_tx (char *tx_buf, unsigned int tx_len);
-extern int ifx_ssc_rx (char *rx_buf, unsigned int rx_len);
-
-#define EEPROM_CS IFX_SSC_WHBGPOSTAT_OUT0_POS
-
-/* commands for EEPROM, x25160, x25140 */
-#define EEPROM_WREN ((unsigned char)0x06)
-#define EEPROM_WRDI ((unsigned char)0x04)
-#define EEPROM_RDSR ((unsigned char)0x05)
-#define EEPROM_WRSR ((unsigned char)0x01)
-#define EEPROM_READ ((unsigned char)0x03)
-#define EEPROM_WRITE ((unsigned char)0x02)
-#define EEPROM_PAGE_SIZE 4
-#define EEPROM_SIZE 512
-
-static int
-eeprom_rdsr (void)
-{
- int ret = 0;
- unsigned char cmd = EEPROM_RDSR;
- unsigned long flag;
- char status;
-
- local_irq_save(flag);
-
- if ((ret = ifx_ssc_cs_low(EEPROM_CS)) == 0)
- if ((ret = ifx_ssc_txrx(&cmd, 1, &status, 1)) >= 0)
- ret = status & 1;
-
- ifx_ssc_cs_high(EEPROM_CS);
- local_irq_restore(flag);
-
- return ret;
-}
-
-void
-eeprom_wip_over (void)
-{
- while (eeprom_rdsr())
- printk("waiting for eeprom\n");
-}
-
-static int
-eeprom_wren (void)
-{
- unsigned char cmd = EEPROM_WREN;
- int ret = 0;
- unsigned long flag;
-
- local_irq_save(flag);
- if ((ret = ifx_ssc_cs_low(EEPROM_CS)) == 0)
- if ((ret = ifx_ssc_tx(&cmd, 1)) >= 0)
- ret = 0;
-
- ifx_ssc_cs_high(EEPROM_CS);
- local_irq_restore(flag);
-
- if (!ret)
- eeprom_wip_over();
-
- return ret;
-}
-
-static int
-eeprom_wrsr (void)
-{
- int ret = 0;
- unsigned char cmd[2];
- unsigned long flag;
-
- cmd[0] = EEPROM_WRSR;
- cmd[1] = 0;
-
- if ((ret = eeprom_wren()))
- {
- printk ("eeprom_wren fails\n");
- goto out1;
- }
-
- local_irq_save(flag);
-
- if ((ret = ifx_ssc_cs_low(EEPROM_CS)))
- goto out;
-
- if ((ret = ifx_ssc_tx(cmd, 2)) < 0) {
- ifx_ssc_cs_high(EEPROM_CS);
- goto out;
- }
-
- if ((ret = ifx_ssc_cs_low(EEPROM_CS)))
- goto out;
-
- local_irq_restore(flag);
- eeprom_wip_over();
-
- return ret;
-
-out:
- local_irq_restore (flag);
- eeprom_wip_over ();
-
-out1:
- return ret;
-}
-
-static int
-eeprom_read (unsigned int addr, unsigned char *buf, unsigned int len)
-{
- int ret = 0;
- unsigned char write_buf[2];
- unsigned int eff = 0;
- unsigned long flag;
-
- while (1)
- {
- eeprom_wip_over();
- eff = EEPROM_PAGE_SIZE - (addr % EEPROM_PAGE_SIZE);
- eff = (eff < len) ? eff : len;
- local_irq_save(flag);
-
- if ((ret = ifx_ssc_cs_low(EEPROM_CS)) < 0)
- goto out;
-
- write_buf[0] = EEPROM_READ | ((unsigned char) ((addr & 0x100) >> 5));
- write_buf[1] = (addr & 0xff);
-
- if ((ret = ifx_ssc_txrx (write_buf, 2, buf, eff)) != eff)
- {
- printk("ssc_txrx fails %d\n", ret);
- ifx_ssc_cs_high (EEPROM_CS);
- goto out;
- }
-
- buf += ret;
- len -= ret;
- addr += ret;
-
- if ((ret = ifx_ssc_cs_high(EEPROM_CS)))
- goto out;
-
- local_irq_restore(flag);
-
- if (len <= 0)
- goto out2;
- }
-
-out:
- local_irq_restore (flag);
-out2:
- return ret;
-}
-
-static int
-eeprom_write (unsigned int addr, unsigned char *buf, unsigned int len)
-{
- int ret = 0;
- unsigned int eff = 0;
- unsigned char write_buf[2];
- int i;
- unsigned char rx_buf[EEPROM_PAGE_SIZE];
-
- while (1)
- {
- eeprom_wip_over();
-
- if ((ret = eeprom_wren()))
- {
- printk("eeprom_wren fails\n");
- goto out;
- }
-
- write_buf[0] = EEPROM_WRITE | ((unsigned char) ((addr & 0x100) >> 5));
- write_buf[1] = (addr & 0xff);
-
- eff = EEPROM_PAGE_SIZE - (addr % EEPROM_PAGE_SIZE);
- eff = (eff < len) ? eff : len;
-
- printk("EEPROM Write:\n");
- for (i = 0; i < eff; i++) {
- printk("%2x ", buf[i]);
- if ((i % 16) == 15)
- printk("\n");
- }
- printk("\n");
-
- if ((ret = ifx_ssc_cs_low(EEPROM_CS)))
- goto out;
-
- if ((ret = ifx_ssc_tx (write_buf, 2)) < 0)
- {
- printk("ssc_tx fails %d\n", ret);
- ifx_ssc_cs_high(EEPROM_CS);
- goto out;
- }
-
- if ((ret = ifx_ssc_tx (buf, eff)) != eff)
- {
- printk("ssc_tx fails %d\n", ret);
- ifx_ssc_cs_high(EEPROM_CS);
- goto out;
- }
-
- buf += ret;
- len -= ret;
- addr += ret;
-
- if ((ret = ifx_ssc_cs_high (EEPROM_CS)))
- goto out;
-
- printk ("<==");
- eeprom_read((addr - eff), rx_buf, eff);
- for (i = 0; i < eff; i++)
- {
- printk ("[%x]", rx_buf[i]);
- }
- printk ("\n");
-
- if (len <= 0)
- break;
- }
-
-out:
- return ret;
-}
-
-int
-ifxmips_eeprom_open (struct inode *inode, struct file *filp)
-{
- filp->f_pos = 0;
- return 0;
-}
-
-int
-ifxmips_eeprom_close (struct inode *inode, struct file *filp)
-{
- return 0;
-}
-
-int
-ifxmips_eeprom_ioctl (struct inode *inode, struct file *filp, unsigned int cmd, unsigned long data)
-{
- return 0;
-}
-
-ssize_t
-ifxmips_eeprom_read (char *buf, size_t len, unsigned int addr)
-{
- int ret = 0;
- unsigned int data;
-
- printk("addr:=%d\n", addr);
- printk("len:=%d\n", len);
-
- if ((addr + len) > EEPROM_SIZE)
- {
- printk("invalid len\n");
- addr = 0;
- len = EEPROM_SIZE / 2;
- }
-
- if ((ret = ifx_ssc_open((struct inode *) 0, NULL)))
- {
- printk("ifxmips_eeprom_open fails\n");
- goto out;
- }
-
- data = (unsigned int)IFX_SSC_MODE_RXTX;
-
- if ((ret = ifx_ssc_ioctl((struct inode *) 0, NULL, IFX_SSC_RXTX_MODE_SET, (unsigned long) &data)))
- {
- printk("set RXTX mode fails\n");
- goto out;
- }
-
- if ((ret = eeprom_wrsr()))
- {
- printk("EEPROM reset fails\n");
- goto out;
- }
-
- if ((ret = eeprom_read(addr, buf, len)))
- {
- printk("eeprom read fails\n");
- goto out;
- }
-
-out:
- if (ifx_ssc_close((struct inode *) 0, NULL))
- printk("ifxmips_eeprom_close fails\n");
-
- return len;
-}
-EXPORT_SYMBOL(ifxmips_eeprom_read);
-
-static ssize_t
-ifxmips_eeprom_fops_read (struct file *filp, char *ubuf, size_t len, loff_t * off)
-{
- int ret = 0;
- unsigned char ssc_rx_buf[EEPROM_SIZE];
- long flag;
-
- if (*off >= EEPROM_SIZE)
- return 0;
-
- if (*off + len > EEPROM_SIZE)
- len = EEPROM_SIZE - *off;
-
- if (len == 0)
- return 0;
-
- local_irq_save(flag);
-
- if ((ret = ifxmips_eeprom_read(ssc_rx_buf, len, *off)) < 0)
- {
- printk("read fails, err=%x\n", ret);
- local_irq_restore(flag);
- return ret;
- }
-
- if (copy_to_user((void*)ubuf, ssc_rx_buf, ret) != 0)
- {
- local_irq_restore(flag);
- ret = -EFAULT;
- }
-
- local_irq_restore(flag);
- *off += len;
-
- return len;
-}
-
-ssize_t
-ifxmips_eeprom_write (char *buf, size_t len, unsigned int addr)
-{
- int ret = 0;
- unsigned int data;
-
- if ((ret = ifx_ssc_open ((struct inode *) 0, NULL)))
- {
- printk ("ifxmips_eeprom_open fails\n");
- goto out;
- }
-
- data = (unsigned int) IFX_SSC_MODE_RXTX;
-
- if ((ret = ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_RXTX_MODE_SET, (unsigned long) &data)))
- {
- printk ("set RXTX mode fails\n");
- goto out;
- }
-
- if ((ret = eeprom_wrsr ())) {
- printk ("EEPROM reset fails\n");
- goto out;
- }
-
- if ((ret = eeprom_write (addr, buf, len))) {
- printk ("eeprom write fails\n");
- goto out;
- }
-
-out:
- if (ifx_ssc_close ((struct inode *) 0, NULL))
- printk ("ifxmips_eeprom_close fails\n");
-
- return ret;
-}
-EXPORT_SYMBOL(ifxmips_eeprom_write);
-
-static ssize_t
-ifxmips_eeprom_fops_write (struct file *filp, const char *ubuf, size_t len, loff_t * off)
-{
- int ret = 0;
- unsigned char ssc_tx_buf[EEPROM_SIZE];
-
- if (*off >= EEPROM_SIZE)
- return 0;
-
- if (len + *off > EEPROM_SIZE)
- len = EEPROM_SIZE - *off;
-
- if ((ret = copy_from_user (ssc_tx_buf, ubuf, len)))
- return EFAULT;
-
- ret = ifxmips_eeprom_write (ssc_tx_buf, len, *off);
-
- if (ret > 0)
- *off = ret;
-
- return ret;
-}
-
-loff_t
-ifxmips_eeprom_llseek (struct file * filp, loff_t off, int whence)
-{
- loff_t newpos;
- switch (whence) {
- case SEEK_SET:
- newpos = off;
- break;
-
- case SEEK_CUR:
- newpos = filp->f_pos + off;
- break;
-
- default:
- return -EINVAL;
- }
-
- if (newpos < 0)
- return -EINVAL;
-
- filp->f_pos = newpos;
-
- return newpos;
-}
-
-static struct file_operations ifxmips_eeprom_fops = {
- owner:THIS_MODULE,
- llseek:ifxmips_eeprom_llseek,
- read:ifxmips_eeprom_fops_read,
- write:ifxmips_eeprom_fops_write,
- ioctl:ifxmips_eeprom_ioctl,
- open:ifxmips_eeprom_open,
- release:ifxmips_eeprom_close,
-};
-
-int __init
-ifxmips_eeprom_init (void)
-{
- int ret = 0;
-
- ifxmips_eeprom_maj = register_chrdev(0, "eeprom", &ifxmips_eeprom_fops);
-
- if (ifxmips_eeprom_maj < 0)
- {
- printk("failed to register eeprom device\n");
- ret = -EINVAL;
-
- goto out;
- }
-
- printk("ifxmips_eeprom : /dev/eeprom mayor %d\n", ifxmips_eeprom_maj);
-
-out:
- return ret;
-}
-
-void __exit
-ifxmips_eeprom_cleanup_module (void)
-{
- /*if (unregister_chrdev (ifxmips_eeprom_maj, "eeprom")) {
- printk ("Unable to unregister major %d for the EEPROM\n",
- maj);
- }*/
-}
-
-module_exit (ifxmips_eeprom_cleanup_module);
-module_init (ifxmips_eeprom_init);
-
-MODULE_LICENSE ("GPL");
-MODULE_AUTHOR ("Peng Liu");
-MODULE_DESCRIPTION ("IFAP EEPROM driver");
-MODULE_SUPPORTED_DEVICE ("ifxmips_eeprom");
-
-
+++ /dev/null
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- *
- * Copyright (C) 2005 infineon
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
- *
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/proc_fs.h>
-#include <linux/init.h>
-#include <linux/ioctl.h>
-#include <asm/semaphore.h>
-#include <asm/uaccess.h>
-#include <asm/ifxmips/ifxmips.h>
-#include <asm/ifxmips/ifxmips_ioctl.h>
-
-#define MAX_PORTS 2
-#define PINS_PER_PORT 16
-
-static unsigned int ifxmips_gpio_major = 0;
-
-/* TODO do we need this ? */
-static struct semaphore port_sem;
-
-/* TODO do we really need this ? return in a define is forbidden by coding style */
-#define IFXMIPS_GPIO_SANITY {if (port > MAX_PORTS || pin > PINS_PER_PORT) return -EINVAL; }
-
-int
-ifxmips_port_reserve_pin (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- printk("%s : call to obseleted function\n", __func__);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_reserve_pin);
-
-int
-ifxmips_port_free_pin (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- printk("%s : call to obseleted function\n", __func__);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_free_pin);
-
-int
-ifxmips_port_set_open_drain (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_OD + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_OD);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_open_drain);
-
-int
-ifxmips_port_clear_open_drain (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_OD + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_OD);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_open_drain);
-
-int
-ifxmips_port_set_pudsel (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_PUDSEL + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_PUDSEL);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_pudsel);
-
-int
-ifxmips_port_clear_pudsel (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_PUDSEL + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDSEL);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_pudsel);
-
-int
-ifxmips_port_set_puden (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_PUDEN + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_PUDEN);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_puden);
-
-int
-ifxmips_port_clear_puden (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_PUDEN + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDEN);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_puden);
-
-int
-ifxmips_port_set_stoff (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_STOFF + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_STOFF);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_stoff);
-
-int
-ifxmips_port_clear_stoff (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_STOFF + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_STOFF);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_stoff);
-
-int
-ifxmips_port_set_dir_out (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_DIR + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_DIR);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_dir_out);
-
-int
-ifxmips_port_set_dir_in (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_DIR + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_DIR);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_dir_in);
-
-int
-ifxmips_port_set_output (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_OUT + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_OUT);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_output);
-
-int
-ifxmips_port_clear_output (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_OUT + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_OUT);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_output);
-
-int
-ifxmips_port_get_input (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
-
- if (readl(IFXMIPS_GPIO_P0_IN + (port * 0x30)) & (1 << pin))
- return 0;
- else
- return 1;
-}
-EXPORT_SYMBOL(ifxmips_port_get_input);
-
-int
-ifxmips_port_set_altsel0 (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL0);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_altsel0);
-
-int
-ifxmips_port_clear_altsel0 (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL0);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_altsel0);
-
-int
-ifxmips_port_set_altsel1 (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL1);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_set_altsel1);
-
-int
-ifxmips_port_clear_altsel1 (unsigned int port, unsigned int pin)
-{
- IFXMIPS_GPIO_SANITY;
- writel(readl(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL1);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_port_clear_altsel1);
-
-long ifxmips_port_read_procmem_helper(char* tag, u32* in_reg, char *buf)
-{
- u32 reg, bit = 0;
- unsigned int len, t;
-
- len = sprintf(buf, "\n%s: ", tag);
- reg = readl(in_reg);
- bit = 0x80000000;
- for (t = 0; t < 32; t++) {
- if ((reg & bit) > 0)
- len = len + sprintf(buf + len, "X");
- else
- len = len + sprintf(buf + len, " ");
- bit = bit >> 1;
- }
-
- return len;
-}
-
-int
-ifxmips_port_read_procmem (char *buf, char **start, off_t offset, int count,
- int *eof, void *data)
-{
- long len = sprintf (buf, "\nIFXMips Port Settings\n");
-
- len += sprintf (buf + len,
- " 3 2 1 0\n");
- len += sprintf (buf + len,
- " 10987654321098765432109876543210\n");
- len += sprintf (buf + len,
- "----------------------------------------\n");
-
- len += ifxmips_port_read_procmem_helper("P0-OUT", IFXMIPS_GPIO_P0_OUT, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-OUT", IFXMIPS_GPIO_P1_OUT, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-IN ", IFXMIPS_GPIO_P0_IN, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-IN ", IFXMIPS_GPIO_P1_IN, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-DIR", IFXMIPS_GPIO_P0_DIR, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-DIR", IFXMIPS_GPIO_P1_DIR, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-STO ", IFXMIPS_GPIO_P0_STOFF, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-STO ", IFXMIPS_GPIO_P1_STOFF, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-PUDE", IFXMIPS_GPIO_P0_PUDEN, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-PUDE", IFXMIPS_GPIO_P1_PUDEN, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-OD ", IFXMIPS_GPIO_P0_OD, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-OD ", IFXMIPS_GPIO_P1_OD, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-PUDS", IFXMIPS_GPIO_P0_PUDSEL, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-PUDS", IFXMIPS_GPIO_P1_PUDSEL, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-ALT0", IFXMIPS_GPIO_P0_ALTSEL0, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-ALT0", IFXMIPS_GPIO_P1_ALTSEL0, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P0-ALT1", IFXMIPS_GPIO_P0_ALTSEL1, &buf[len]);
- len += ifxmips_port_read_procmem_helper("P1-ALT1", IFXMIPS_GPIO_P1_ALTSEL1, &buf[len]);
- len = len + sprintf (buf + len, "\n\n");
-
- *eof = 1;
-
- return len;
-}
-
-static int
-ifxmips_port_open (struct inode *inode, struct file *filep)
-{
- return 0;
-}
-
-static int
-ifxmips_port_release (struct inode *inode, struct file *filelp)
-{
- return 0;
-}
-
-static int
-ifxmips_port_ioctl (struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
-{
- int ret = 0;
- volatile struct ifxmips_port_ioctl_parm parm;
-
- if (_IOC_TYPE (cmd) != IFXMIPS_PORT_IOC_MAGIC)
- return -EINVAL;
-
- if (_IOC_DIR (cmd) & _IOC_WRITE) {
- if (!access_ok
- (VERIFY_READ, arg,
- sizeof (struct ifxmips_port_ioctl_parm)))
- return -EFAULT;
- ret = copy_from_user ((void *) &parm, (void *) arg,
- sizeof (struct ifxmips_port_ioctl_parm));
- }
- if (_IOC_DIR (cmd) & _IOC_READ) {
- if (!access_ok
- (VERIFY_WRITE, arg,
- sizeof (struct ifxmips_port_ioctl_parm)))
- return -EFAULT;
- }
-
- if (down_trylock (&port_sem) != 0)
- return -EBUSY;
-
- switch (cmd) {
- case IFXMIPS_PORT_IOCOD:
- if (parm.value == 0x00)
- ifxmips_port_clear_open_drain(parm.port, parm.pin);
- else
- ifxmips_port_set_open_drain(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCPUDSEL:
- if (parm.value == 0x00)
- ifxmips_port_clear_pudsel(parm.port, parm.pin);
- else
- ifxmips_port_set_pudsel(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCPUDEN:
- if (parm.value == 0x00)
- ifxmips_port_clear_puden(parm.port, parm.pin);
- else
- ifxmips_port_set_puden(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCSTOFF:
- if (parm.value == 0x00)
- ifxmips_port_clear_stoff(parm.port, parm.pin);
- else
- ifxmips_port_set_stoff(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCDIR:
- if (parm.value == 0x00)
- ifxmips_port_set_dir_in(parm.port, parm.pin);
- else
- ifxmips_port_set_dir_out(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCOUTPUT:
- if (parm.value == 0x00)
- ifxmips_port_clear_output(parm.port, parm.pin);
- else
- ifxmips_port_set_output(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCALTSEL0:
- if (parm.value == 0x00)
- ifxmips_port_clear_altsel0(parm.port, parm.pin);
- else
- ifxmips_port_set_altsel0(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCALTSEL1:
- if (parm.value == 0x00)
- ifxmips_port_clear_altsel1(parm.port, parm.pin);
- else
- ifxmips_port_set_altsel1(parm.port, parm.pin);
- break;
-
- case IFXMIPS_PORT_IOCINPUT:
- parm.value = ifxmips_port_get_input(parm.port, parm.pin);
- copy_to_user((void*)arg, (void*)&parm,
- sizeof(struct ifxmips_port_ioctl_parm));
- break;
-
- default:
- ret = -EINVAL;
- }
-
- up (&port_sem);
-
- return ret;
-}
-
-static struct file_operations port_fops = {
- .open = ifxmips_port_open,
- .release = ifxmips_port_release,
- .ioctl = ifxmips_port_ioctl
-};
-
-int __init
-ifxmips_gpio_init (void)
-{
- int retval = 0;
-
- sema_init (&port_sem, 1);
-
- ifxmips_gpio_major = register_chrdev(0, "ifxmips_gpio", &port_fops);
- if (!ifxmips_gpio_major)
- {
- printk("ifxmips-port: Error! Could not register port device. #%d\n", ifxmips_gpio_major);
- retval = -EINVAL;
- goto out;
- }
-
- create_proc_read_entry("ifxmips_gpio", 0, NULL,
- ifxmips_port_read_procmem, NULL);
-
- printk("registered ifxmips gpio driver\n");
-
-out:
- return retval;
-}
-
-void __exit
-ifxmips_gpio_exit (void)
-{
- unregister_chrdev(ifxmips_gpio_major, "ifxmips_gpio");
- remove_proc_entry("ifxmips_gpio", NULL);
-}
-
-module_init(ifxmips_gpio_init);
-module_exit(ifxmips_gpio_exit);
+++ /dev/null
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- *
- * Copyright (C) 2006 infineon
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/types.h>
-#include <linux/fs.h>
-#include <linux/init.h>
-#include <asm/uaccess.h>
-#include <asm/unistd.h>
-#include <linux/errno.h>
-#include <asm/ifxmips/ifxmips.h>
-#include <asm/ifxmips/ifxmips_gpio.h>
-#include <asm/ifxmips/ifxmips_pmu.h>
-
-#define IFXMIPS_LED_CLK_EDGE IFXMIPS_LED_FALLING
-//#define IFXMIPS_LED_CLK_EDGE IFXMIPS_LED_RISING
-
-#define IFXMIPS_LED_SPEED IFXMIPS_LED_8HZ
-
-#define IFXMIPS_LED_GPIO_PORT 0
-
-static int ifxmips_led_major;
-
-void
-ifxmips_led_set (unsigned int led)
-{
- led &= 0xffffff;
- writel(readl(IFXMIPS_LED_CPU0) | led, IFXMIPS_LED_CPU0);
-}
-EXPORT_SYMBOL(ifxmips_led_set);
-
-void
-ifxmips_led_clear (unsigned int led)
-{
- led = ~(led & 0xffffff);
- writel(readl(IFXMIPS_LED_CPU0) & led, IFXMIPS_LED_CPU0);
-}
-EXPORT_SYMBOL(ifxmips_led_clear);
-
-void
-ifxmips_led_blink_set (unsigned int led)
-{
- led &= 0xffffff;
- writel(readl(IFXMIPS_LED_CON0) | led, IFXMIPS_LED_CON0);
-}
-EXPORT_SYMBOL(ifxmips_led_blink_set);
-
-void
-ifxmips_led_blink_clear (unsigned int led)
-{
- led = ~(led & 0xffffff);
- writel(readl(IFXMIPS_LED_CON0) & led, IFXMIPS_LED_CON0);
-}
-EXPORT_SYMBOL(ifxmips_led_blink_clear);
-
-void
-ifxmips_led_setup_gpio (void)
-{
- int i = 0;
-
- /* we need to setup pins SH,D,ST (4,5,6) */
- for (i = 4; i < 7; i++)
- {
- ifxmips_port_set_altsel0(IFXMIPS_LED_GPIO_PORT, i);
- ifxmips_port_clear_altsel1(IFXMIPS_LED_GPIO_PORT, i);
- ifxmips_port_set_dir_out(IFXMIPS_LED_GPIO_PORT, i);
- ifxmips_port_set_open_drain(IFXMIPS_LED_GPIO_PORT, i);
- }
-}
-
-static int
-led_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
-{
- int ret = -EINVAL;
-
- switch ( cmd )
- {
- }
-
- return ret;
-}
-
-static int
-led_open (struct inode *inode, struct file *file)
-{
- return 0;
-}
-
-static int
-led_release (struct inode *inode, struct file *file)
-{
- return 0;
-}
-
-static struct file_operations ifxmips_led_fops = {
- .owner = THIS_MODULE,
- .ioctl = led_ioctl,
- .open = led_open,
- .release = led_release
-};
-
-
-/*
-Map for LED on reference board
- WLAN_READ LED11 OUT1 15
- WARNING LED12 OUT2 14
- FXS1_LINK LED13 OUT3 13
- FXS2_LINK LED14 OUT4 12
- FXO_ACT LED15 OUT5 11
- USB_LINK LED16 OUT6 10
- ADSL2_LINK LED19 OUT7 9
- BT_LINK LED17 OUT8 8
- SD_LINK LED20 OUT9 7
- ADSL2_TRAFFIC LED31 OUT16 0
-Map for hardware relay on reference board
- USB Power On OUT11 5
- RELAY OUT12 4
-*/
-
-
-int __init
-ifxmips_led_init (void)
-{
- int ret = 0;
-
- ifxmips_led_setup_gpio();
-
- writel(0, IFXMIPS_LED_AR);
- writel(0, IFXMIPS_LED_CPU0);
- writel(0, IFXMIPS_LED_CPU1);
- writel(LED_CON0_SWU, IFXMIPS_LED_CON0);
- writel(0, IFXMIPS_LED_CON1);
-
- /* setup the clock edge that the shift register is triggered on */
- writel(readl(IFXMIPS_LED_CON0) & ~IFXMIPS_LED_EDGE_MASK, IFXMIPS_LED_CON0);
- writel(readl(IFXMIPS_LED_CON0) | IFXMIPS_LED_CLK_EDGE, IFXMIPS_LED_CON0);
-
- /* per default leds 15-0 are set */
- writel(IFXMIPS_LED_GROUP1 | IFXMIPS_LED_GROUP0, IFXMIPS_LED_CON1);
-
- /* leds are update periodically by the FPID */
- writel(readl(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_UPD_MASK, IFXMIPS_LED_CON1);
- writel(readl(IFXMIPS_LED_CON1) | IFXMIPS_LED_UPD_SRC_FPI, IFXMIPS_LED_CON1);
-
- /* set led update speed */
- writel(readl(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_MASK, IFXMIPS_LED_CON1);
- writel(readl(IFXMIPS_LED_CON1) | IFXMIPS_LED_SPEED, IFXMIPS_LED_CON1);
-
- /* adsl 0 and 1 leds are updated by the arc */
- writel(readl(IFXMIPS_LED_CON0) | IFXMIPS_LED_ADSL_SRC, IFXMIPS_LED_CON0);
-
- /* per default, the leds are turned on */
- ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_LED);
-
- ifxmips_led_major = register_chrdev(0, "ifxmips_led", &ifxmips_led_fops);
-
- if (!ifxmips_led_major)
- {
- printk("ifxmips_led: Error! Could not register device. %d\n", ifxmips_led_major);
- ret = -EINVAL;
-
- goto out;
- }
-
- printk(KERN_INFO "ifxmips_led : device registered on major %d\n", ifxmips_led_major);
-
-out:
- return ret;
-}
-
-void __exit
-ifxmips_led_exit (void)
-{
- unregister_chrdev(ifxmips_led_major, "ifxmips_led");
-}
-
-module_init(ifxmips_led_init);
-module_exit(ifxmips_led_exit);
+++ /dev/null
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- *
- * Copyright (C) 2006 infineon
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
- *
- */
-
-// ### TO DO: general issues:
-// - power management
-// - interrupt handling (direct/indirect)
-// - pin/mux-handling (just overall concept due to project dependency)
-// - multiple instances capability
-// - slave functionality
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/major.h>
-#include <linux/string.h>
-#include <linux/fs.h>
-#include <linux/proc_fs.h>
-#include <linux/fcntl.h>
-#include <linux/ptrace.h>
-#include <linux/mm.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
-#include <linux/slab.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm/bitops.h>
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/version.h>
-
-#include <asm/ifxmips/ifxmips.h>
-#include <asm/ifxmips/ifxmips_irq.h>
-#include <asm/ifxmips/ifx_ssc_defines.h>
-#include <asm/ifxmips/ifx_ssc.h>
-
-#ifdef SSC_FRAME_INT_ENABLE
-#undef SSC_FRAME_INT_ENABLE
-#endif
-
-#define not_yet
-
-#define SPI_VINETIC
-
-
-
-/* allow the user to set the major device number */
-static int maj = 0;
-
-/*
- * This is the per-channel data structure containing pointers, flags
- * and variables for the port. This driver supports a maximum of PORT_CNT.
- * isp is allocated in ifx_ssc_init() based on the chip version.
- */
-static struct ifx_ssc_port *isp;
-
-/* prototypes for fops */
-static ssize_t ifx_ssc_read (struct file *, char *, size_t, loff_t *);
-static ssize_t ifx_ssc_write (struct file *, const char *, size_t, loff_t *);
-//static unsigned int ifx_ssc_poll(struct file *, struct poll_table_struct *);
-int ifx_ssc_ioctl (struct inode *, struct file *, unsigned int,
- unsigned long);
-int ifx_ssc_open (struct inode *, struct file *);
-int ifx_ssc_close (struct inode *, struct file *);
-
-/* other forward declarations */
-static unsigned int ifx_ssc_get_kernel_clk (struct ifx_ssc_port *info);
-static void tx_int (struct ifx_ssc_port *);
-static int ifx_ssc1_read_proc (char *, char **, off_t, int, int *, void *);
-
-extern unsigned int ifxmips_get_fpi_hz (void);
-extern void mask_and_ack_ifxmips_irq (unsigned int irq_nr);
-
-static struct file_operations ifx_ssc_fops = {
- .owner = THIS_MODULE,
- .read = ifx_ssc_read,
- .write = ifx_ssc_write,
- .ioctl = ifx_ssc_ioctl,
- .open = ifx_ssc_open,
- .release = ifx_ssc_close,
-};
-
-static inline unsigned int
-ifx_ssc_get_kernel_clk (struct ifx_ssc_port *info)
-{
- unsigned int rmc;
-
- rmc = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_CLC) & IFX_CLC_RUN_DIVIDER_MASK) >> IFX_CLC_RUN_DIVIDER_OFFSET;
- if (rmc == 0)
- {
- printk ("ifx_ssc_get_kernel_clk rmc==0 \n");
- return 0;
- }
- return ifxmips_get_fpi_hz () / rmc;
-}
-
-#ifndef not_yet
-#ifdef IFX_SSC_INT_USE_BH
-/*
- * This routine is used by the interrupt handler to schedule
- * processing in the software interrupt portion of the driver
- * (also known as the "bottom half"). This can be called any
- * number of times for any channel without harm.
- */
-static inline void
-ifx_ssc_sched_event (struct ifx_ssc_port *info, int event)
-{
- info->event |= 1 << event; /* remember what kind of event and who */
- queue_task (&info->tqueue, &tq_cyclades); /* it belongs to */
- mark_bh (CYCLADES_BH); /* then trigger event */
-}
-
-static void
-do_softint (void *private_)
-{
- struct ifx_ssc_port *info = (struct ifx_ssc_port *) private_;
-
- if (test_and_clear_bit (Cy_EVENT_HANGUP, &info->event))
- {
- wake_up_interruptible (&info->open_wait);
- info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE);
- }
-
- if (test_and_clear_bit (Cy_EVENT_OPEN_WAKEUP, &info->event))
- wake_up_interruptible (&info->open_wait);
-
- if (test_and_clear_bit (Cy_EVENT_DELTA_WAKEUP, &info->event))
- wake_up_interruptible (&info->delta_msr_wait);
-
- if (test_and_clear_bit (Cy_EVENT_WRITE_WAKEUP, &info->event))
- wake_up_interruptible (&tty->write_wait);
-#ifdef Z_WAKE
- if (test_and_clear_bit (Cy_EVENT_SHUTDOWN_WAKEUP, &info->event))
- wake_up_interruptible (&info->shutdown_wait);
-#endif
-}
-#endif
-#endif
-
-inline static void
-rx_int (struct ifx_ssc_port *info)
-{
- int fifo_fill_lev, bytes_in_buf, i;
- unsigned long tmp_val;
- unsigned long *tmp_ptr;
- unsigned int rx_valid_cnt;
- /* number of words waiting in the RX FIFO */
- fifo_fill_lev = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_FSTAT) & IFX_SSC_FSTAT_RECEIVED_WORDS_MASK) >> IFX_SSC_FSTAT_RECEIVED_WORDS_OFFSET;
- // Note: There are always 32 bits in a fifo-entry except for the last
- // word of a contigous transfer block and except for not in rx-only
- // mode and CON.ENBV set. But for this case it should be a convention
- // in software which helps:
- // In tx or rx/tx mode all transfers from the buffer to the FIFO are
- // 32-bit wide, except for the last three bytes, which could be a
- // combination of 16- and 8-bit access.
- // => The whole block is received as 32-bit words as a contigous stream,
- // even if there was a gap in tx which has the fifo run out of data!
- // Just the last fifo entry *may* be partially filled (0, 1, 2 or 3 bytes)!
-
- /* free space in the RX buffer */
- bytes_in_buf = info->rxbuf_end - info->rxbuf_ptr;
- // transfer with 32 bits per entry
- while ((bytes_in_buf >= 4) && (fifo_fill_lev > 0)) {
- tmp_ptr = (unsigned long *) info->rxbuf_ptr;
- *tmp_ptr = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RB);
- info->rxbuf_ptr += 4;
- info->stats.rxBytes += 4;
- fifo_fill_lev--;
- bytes_in_buf -= 4;
- }
-
- // now do the rest as mentioned in STATE.RXBV
- while ((bytes_in_buf > 0) && (fifo_fill_lev > 0)) {
- rx_valid_cnt = (READ_PERIPHERAL_REGISTER(info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_RX_BYTE_VALID_MASK) >> IFX_SSC_STATE_RX_BYTE_VALID_OFFSET;
- if (rx_valid_cnt == 0)
- break;
-
- if (rx_valid_cnt > bytes_in_buf)
- rx_valid_cnt = bytes_in_buf;
-
- tmp_val = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RB);
-
- for (i = 0; i < rx_valid_cnt; i++)
- {
- *info->rxbuf_ptr = (tmp_val >> (8 * (rx_valid_cnt - i - 1))) & 0xff;
- bytes_in_buf--;
- info->rxbuf_ptr++;
- }
- info->stats.rxBytes += rx_valid_cnt;
- }
-
- // check if transfer is complete
- if (info->rxbuf_ptr >= info->rxbuf_end)
- {
- disable_irq(info->rxirq);
- wake_up_interruptible (&info->rwait);
- } else if ((info->opts.modeRxTx == IFX_SSC_MODE_RX) && (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RXCNT) == 0))
- {
- if (info->rxbuf_end - info->rxbuf_ptr < IFX_SSC_RXREQ_BLOCK_SIZE)
- WRITE_PERIPHERAL_REGISTER ((info->rxbuf_end - info->rxbuf_ptr) << IFX_SSC_RXREQ_RXCOUNT_OFFSET, info->mapbase + IFX_SSC_RXREQ);
- else
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_RXREQ_BLOCK_SIZE << IFX_SSC_RXREQ_RXCOUNT_OFFSET, info->mapbase + IFX_SSC_RXREQ);
- }
-}
-
-inline static void
-tx_int (struct ifx_ssc_port *info)
-{
-
- int fifo_space, fill, i;
- fifo_space = ((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_ID) & IFX_SSC_PERID_TXFS_MASK) >> IFX_SSC_PERID_TXFS_OFFSET)
- - ((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_FSTAT) & IFX_SSC_FSTAT_TRANSMIT_WORDS_MASK) >> IFX_SSC_FSTAT_TRANSMIT_WORDS_OFFSET);
-
- if (fifo_space == 0)
- return;
-
- fill = info->txbuf_end - info->txbuf_ptr;
-
- if (fill > fifo_space * 4)
- fill = fifo_space * 4;
-
- for (i = 0; i < fill / 4; i++)
- {
- // at first 32 bit access
- WRITE_PERIPHERAL_REGISTER (*(UINT32 *) info->txbuf_ptr, info->mapbase + IFX_SSC_TB);
- info->txbuf_ptr += 4;
- }
-
- fifo_space -= fill / 4;
- info->stats.txBytes += fill & ~0x3;
- fill &= 0x3;
- if ((fifo_space > 0) & (fill > 1))
- {
- // trailing 16 bit access
- WRITE_PERIPHERAL_REGISTER_16 (*(UINT16 *) info->txbuf_ptr, info->mapbase + IFX_SSC_TB);
- info->txbuf_ptr += 2;
- info->stats.txBytes += 2;
- fifo_space--;
- fill -= 2;
- }
-
- if ((fifo_space > 0) & (fill > 0))
- {
- // trailing 8 bit access
- WRITE_PERIPHERAL_REGISTER_8 (*(UINT8 *) info->txbuf_ptr, info->mapbase + IFX_SSC_TB);
- info->txbuf_ptr++;
- info->stats.txBytes++;
- }
-
- // check if transmission complete
- if (info->txbuf_ptr >= info->txbuf_end)
- {
- disable_irq(info->txirq);
- kfree (info->txbuf);
- info->txbuf = NULL;
- }
-
-}
-
-irqreturn_t
-ifx_ssc_rx_int (int irq, void *dev_id)
-{
- struct ifx_ssc_port *info = (struct ifx_ssc_port *) dev_id;
- rx_int (info);
-
- return IRQ_HANDLED;
-}
-
-irqreturn_t
-ifx_ssc_tx_int (int irq, void *dev_id)
-{
- struct ifx_ssc_port *info = (struct ifx_ssc_port *) dev_id;
- tx_int (info);
-
- return IRQ_HANDLED;
-}
-
-irqreturn_t
-ifx_ssc_err_int (int irq, void *dev_id)
-{
- struct ifx_ssc_port *info = (struct ifx_ssc_port *) dev_id;
- unsigned int state;
- unsigned int write_back = 0;
- unsigned long flags;
-
- local_irq_save (flags);
- state = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE);
-
- if ((state & IFX_SSC_STATE_RX_UFL) != 0) {
- info->stats.rxUnErr++;
- write_back |= IFX_SSC_WHBSTATE_CLR_RX_UFL_ERROR;
- }
-
- if ((state & IFX_SSC_STATE_RX_OFL) != 0) {
- info->stats.rxOvErr++;
- write_back |= IFX_SSC_WHBSTATE_CLR_RX_OFL_ERROR;
- }
-
- if ((state & IFX_SSC_STATE_TX_OFL) != 0) {
- info->stats.txOvErr++;
- write_back |= IFX_SSC_WHBSTATE_CLR_TX_OFL_ERROR;
- }
-
- if ((state & IFX_SSC_STATE_TX_UFL) != 0) {
- info->stats.txUnErr++;
- write_back |= IFX_SSC_WHBSTATE_CLR_TX_UFL_ERROR;
- }
-
- if ((state & IFX_SSC_STATE_MODE_ERR) != 0) {
- info->stats.modeErr++;
- write_back |= IFX_SSC_WHBSTATE_CLR_MODE_ERROR;
- }
-
- if (write_back)
- WRITE_PERIPHERAL_REGISTER (write_back, info->mapbase + IFX_SSC_WHBSTATE);
-
- local_irq_restore (flags);
-
- return IRQ_HANDLED;
-}
-
-static void
-ifx_ssc_abort (struct ifx_ssc_port *info)
-{
- unsigned long flags;
- bool enabled;
-
- local_irq_save (flags);
-
- disable_irq(info->rxirq);
- disable_irq(info->txirq);
- disable_irq(info->errirq);
-
- local_irq_restore (flags);
-
- // disable SSC (also aborts a receive request!)
- // ### TO DO: Perhaps it's better to abort after the receiption of a
- // complete word. The disable cuts the transmission immediatly and
- // releases the chip selects. This could result in unpredictable
- // behavior of connected external devices!
- enabled = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_IS_ENABLED) != 0;
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
-
- // flush fifos
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_XFCON_FIFO_FLUSH, info->mapbase + IFX_SSC_TXFCON);
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_XFCON_FIFO_FLUSH, info->mapbase + IFX_SSC_RXFCON);
-
- // free txbuf
- if (info->txbuf != NULL)
- {
- kfree (info->txbuf);
- info->txbuf = NULL;
- }
-
- // wakeup read process
- if (info->rxbuf != NULL)
- wake_up_interruptible (&info->rwait);
-
- // clear pending int's
- mask_and_ack_ifxmips_irq(info->rxirq);
- mask_and_ack_ifxmips_irq(info->txirq);
- mask_and_ack_ifxmips_irq(info->errirq);
-
- // clear error flags
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ALL_ERROR, info->mapbase + IFX_SSC_WHBSTATE);
-
- if (enabled)
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
-
-}
-
-/*
- * This routine is called whenever a port is opened. It enforces
- * exclusive opening of a port and enables interrupts, etc.
- */
-int
-ifx_ssc_open (struct inode *inode, struct file *filp)
-{
- struct ifx_ssc_port *info;
- int line;
- int from_kernel = 0;
-
- if ((inode == (struct inode *) 0) || (inode == (struct inode *) 1)) {
- from_kernel = 1;
- line = (int) inode;
- } else {
- line = MINOR (filp->f_dentry->d_inode->i_rdev);
- filp->f_op = &ifx_ssc_fops;
- }
-
- /* don't open more minor devices than we can support */
- if (line < 0 || line >= PORT_CNT)
- return -ENXIO;
-
- info = &isp[line];
-
- /* exclusive open */
- if (info->port_is_open != 0)
- return -EBUSY;
- info->port_is_open++;
-
- disable_irq(info->rxirq);
- disable_irq(info->txirq);
- disable_irq(info->errirq);
-
- /* Flush and enable TX/RX FIFO */
- WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_TXFIFO_FL << IFX_SSC_XFCON_ITL_OFFSET) | IFX_SSC_XFCON_FIFO_FLUSH | IFX_SSC_XFCON_FIFO_ENABLE, info->mapbase + IFX_SSC_TXFCON);
- WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_RXFIFO_FL << IFX_SSC_XFCON_ITL_OFFSET) | IFX_SSC_XFCON_FIFO_FLUSH | IFX_SSC_XFCON_FIFO_ENABLE, info->mapbase + IFX_SSC_RXFCON);
-
- /* logically flush the software FIFOs */
- info->rxbuf_ptr = 0;
- info->txbuf_ptr = 0;
-
- /* clear all error bits */
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ALL_ERROR, info->mapbase + IFX_SSC_WHBSTATE);
-
- // clear pending interrupts
- mask_and_ack_ifxmips_irq(info->rxirq);
- mask_and_ack_ifxmips_irq(info->txirq);
- mask_and_ack_ifxmips_irq(info->errirq);
-
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
-
- return 0;
-}
-EXPORT_SYMBOL(ifx_ssc_open);
-
-int
-ifx_ssc_close (struct inode *inode, struct file *filp)
-{
- struct ifx_ssc_port *info;
- int idx;
-
- if ((inode == (struct inode *) 0) || (inode == (struct inode *) 1))
- idx = (int) inode;
- else
- idx = MINOR (filp->f_dentry->d_inode->i_rdev);
-
- if (idx < 0 || idx >= PORT_CNT)
- return -ENXIO;
-
- info = &isp[idx];
- if (!info)
- return -ENXIO;
-
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
-
- ifx_ssc_abort(info);
-
- info->port_is_open--;
-
- return 0;
-}
-EXPORT_SYMBOL(ifx_ssc_close);
-
-static ssize_t
-ifx_ssc_read_helper_poll (struct ifx_ssc_port *info, char *buf, size_t len, int from_kernel)
-{
- ssize_t ret_val;
- unsigned long flags;
-
- if (info->opts.modeRxTx == IFX_SSC_MODE_TX)
- return -EFAULT;
- local_irq_save (flags);
- info->rxbuf_ptr = info->rxbuf;
- info->rxbuf_end = info->rxbuf + len;
- local_irq_restore (flags);
- /* Vinetic driver always works in IFX_SSC_MODE_RXTX */
- /* TXRX in poll mode */
- while (info->rxbuf_ptr < info->rxbuf_end)
- {
- if (info->txbuf_ptr < info->txbuf_end)
- tx_int (info);
-
- rx_int (info);
- };
-
- ret_val = info->rxbuf_ptr - info->rxbuf;
-
- return ret_val;
-}
-
-static ssize_t
-ifx_ssc_read_helper (struct ifx_ssc_port *info, char *buf, size_t len, int from_kernel)
-{
- ssize_t ret_val;
- unsigned long flags;
- DECLARE_WAITQUEUE (wait, current);
-
- if (info->opts.modeRxTx == IFX_SSC_MODE_TX)
- return -EFAULT;
-
- local_irq_save (flags);
- info->rxbuf_ptr = info->rxbuf;
- info->rxbuf_end = info->rxbuf + len;
-
- if (info->opts.modeRxTx == IFX_SSC_MODE_RXTX)
- {
- if ((info->txbuf == NULL) || (info->txbuf != info->txbuf_ptr) || (info->txbuf_end != len + info->txbuf))
- {
- local_irq_restore (flags);
- printk ("IFX SSC - %s: write must be called before calling " "read in combined RX/TX!\n", __func__);
- return -EFAULT;
- }
-
- local_irq_restore(flags);
- tx_int (info);
-
- if (info->txbuf_ptr < info->txbuf_end)
- enable_irq(info->txirq);
-
- enable_irq(info->rxirq);
- } else {
- local_irq_restore(flags);
- if (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RXCNT) & IFX_SSC_RXCNT_TODO_MASK)
- return -EBUSY;
- enable_irq(info->rxirq);
- if (len < IFX_SSC_RXREQ_BLOCK_SIZE)
- WRITE_PERIPHERAL_REGISTER (len << IFX_SSC_RXREQ_RXCOUNT_OFFSET, info->mapbase + IFX_SSC_RXREQ);
- else
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_RXREQ_BLOCK_SIZE << IFX_SSC_RXREQ_RXCOUNT_OFFSET, info->mapbase + IFX_SSC_RXREQ);
- }
-
- __add_wait_queue (&info->rwait, &wait);
- set_current_state (TASK_INTERRUPTIBLE);
-
- do {
- local_irq_save (flags);
- if (info->rxbuf_ptr >= info->rxbuf_end)
- break;
-
- local_irq_restore (flags);
-
- if (signal_pending (current))
- {
- ret_val = -ERESTARTSYS;
- goto out;
- }
- schedule();
- } while (1);
-
- ret_val = info->rxbuf_ptr - info->rxbuf;
- local_irq_restore (flags);
-
-out:
- current->state = TASK_RUNNING;
- __remove_wait_queue (&info->rwait, &wait);
-
- return (ret_val);
-}
-
-static ssize_t
-ifx_ssc_write_helper (struct ifx_ssc_port *info, const char *buf,
- size_t len, int from_kernel)
-{
- if (info->opts.modeRxTx == IFX_SSC_MODE_RX)
- return -EFAULT;
-
- info->txbuf_ptr = info->txbuf;
- info->txbuf_end = len + info->txbuf;
- if (info->opts.modeRxTx == IFX_SSC_MODE_TX)
- {
- tx_int (info);
- if (info->txbuf_ptr < info->txbuf_end)
- {
- enable_irq(info->txirq);
- }
- }
-
- return len;
-}
-
-ssize_t
-ifx_ssc_kread (int port, char *kbuf, size_t len)
-{
- struct ifx_ssc_port *info;
- ssize_t ret_val;
-
- if (port < 0 || port >= PORT_CNT)
- return -ENXIO;
-
- if (len == 0)
- return 0;
-
- info = &isp[port];
-
- if (info->rxbuf != NULL)
- {
- printk ("SSC device busy\n");
- return -EBUSY;
- }
-
- info->rxbuf = kbuf;
- if (info->rxbuf == NULL)
- {
- printk ("SSC device error\n");
- return -EINVAL;
- }
-
- ret_val = ifx_ssc_read_helper_poll (info, kbuf, len, 1);
- info->rxbuf = NULL;
-
- disable_irq(info->rxirq);
-
- return ret_val;
-}
-EXPORT_SYMBOL(ifx_ssc_kread);
-
-ssize_t
-ifx_ssc_kwrite (int port, const char *kbuf, size_t len)
-{
- struct ifx_ssc_port *info;
- ssize_t ret_val;
-
- if (port < 0 || port >= PORT_CNT)
- return -ENXIO;
-
- if (len == 0)
- return 0;
-
- info = &isp[port];
-
- // check if transmission in progress
- if (info->txbuf != NULL)
- return -EBUSY;
-
- info->txbuf = (char *) kbuf;
-
- ret_val = ifx_ssc_write_helper (info, info->txbuf, len, 1);
-
- if (ret_val < 0)
- info->txbuf = NULL;
-
- return ret_val;
-}
-EXPORT_SYMBOL(ifx_ssc_kwrite);
-
-static ssize_t
-ifx_ssc_read (struct file *filp, char *ubuf, size_t len, loff_t * off)
-{
- ssize_t ret_val;
- int idx;
- struct ifx_ssc_port *info;
-
- idx = MINOR (filp->f_dentry->d_inode->i_rdev);
- info = &isp[idx];
-
- if (info->rxbuf != NULL)
- return -EBUSY;
-
- info->rxbuf = kmalloc (len + 3, GFP_KERNEL);
- if (info->rxbuf == NULL)
- return -ENOMEM;
-
- ret_val = ifx_ssc_read_helper (info, info->rxbuf, len, 0);
- if (copy_to_user ((void *) ubuf, info->rxbuf, ret_val) != 0)
- ret_val = -EFAULT;
-
- disable_irq(info->rxirq);
-
- kfree (info->rxbuf);
- info->rxbuf = NULL;
-
- return (ret_val);
-}
-
-static ssize_t
-ifx_ssc_write (struct file *filp, const char *ubuf, size_t len, loff_t * off)
-{
- int idx;
- struct ifx_ssc_port *info;
- int ret_val;
-
- if (len == 0)
- return (0);
-
- idx = MINOR (filp->f_dentry->d_inode->i_rdev);
- info = &isp[idx];
-
- if (info->txbuf != NULL)
- return -EBUSY;
-
- info->txbuf = kmalloc (len + 3, GFP_KERNEL);
- if (info->txbuf == NULL)
- return -ENOMEM;
-
- ret_val = copy_from_user (info->txbuf, ubuf, len);
- if (ret_val == 0)
- ret_val = ifx_ssc_write_helper (info, info->txbuf, len, 0);
- else
- ret_val = -EFAULT;
-
- if (ret_val < 0)
- {
- kfree (info->txbuf);
- info->txbuf = NULL;
- }
-
- return (ret_val);
-}
-
-static struct ifx_ssc_frm_status *
-ifx_ssc_frm_status_get (struct ifx_ssc_port *info)
-{
- unsigned long tmp;
-
- tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_SFSTAT);
- info->frm_status.DataBusy = (tmp & IFX_SSC_SFSTAT_IN_DATA) > 0;
- info->frm_status.PauseBusy = (tmp & IFX_SSC_SFSTAT_IN_PAUSE) > 0;
- info->frm_status.DataCount = (tmp & IFX_SSC_SFSTAT_DATA_COUNT_MASK) >> IFX_SSC_SFSTAT_DATA_COUNT_OFFSET;
- info->frm_status.PauseCount = (tmp & IFX_SSC_SFSTAT_PAUSE_COUNT_MASK) >> IFX_SSC_SFSTAT_PAUSE_COUNT_OFFSET;
- tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_SFCON);
- info->frm_status.EnIntAfterData = (tmp & IFX_SSC_SFCON_FIR_ENABLE_BEFORE_PAUSE) > 0;
- info->frm_status.EnIntAfterPause = (tmp & IFX_SSC_SFCON_FIR_ENABLE_AFTER_PAUSE) > 0;
-
- return &info->frm_status;
-}
-
-
-static struct ifx_ssc_frm_opts *
-ifx_ssc_frm_control_get (struct ifx_ssc_port *info)
-{
- unsigned long tmp;
-
- tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_SFCON);
- info->frm_opts.FrameEnable = (tmp & IFX_SSC_SFCON_SF_ENABLE) > 0;
- info->frm_opts.DataLength = (tmp & IFX_SSC_SFCON_DATA_LENGTH_MASK) >> IFX_SSC_SFCON_DATA_LENGTH_OFFSET;
- info->frm_opts.PauseLength = (tmp & IFX_SSC_SFCON_PAUSE_LENGTH_MASK) >> IFX_SSC_SFCON_PAUSE_LENGTH_OFFSET;
- info->frm_opts.IdleData = (tmp & IFX_SSC_SFCON_PAUSE_DATA_MASK) >> IFX_SSC_SFCON_PAUSE_DATA_OFFSET;
- info->frm_opts.IdleClock = (tmp & IFX_SSC_SFCON_PAUSE_CLOCK_MASK) >> IFX_SSC_SFCON_PAUSE_CLOCK_OFFSET;
- info->frm_opts.StopAfterPause = (tmp & IFX_SSC_SFCON_STOP_AFTER_PAUSE) > 0;
-
- return &info->frm_opts;
-}
-
-static int
-ifx_ssc_frm_control_set (struct ifx_ssc_port *info)
-{
- unsigned long tmp;
-
- // check parameters
- if ((info->frm_opts.DataLength > IFX_SSC_SFCON_DATA_LENGTH_MAX)
- || (info->frm_opts.DataLength < 1)
- || (info->frm_opts.PauseLength > IFX_SSC_SFCON_PAUSE_LENGTH_MAX)
- || (info->frm_opts.PauseLength < 1)
- || (info->frm_opts.IdleData & ~(IFX_SSC_SFCON_PAUSE_DATA_MASK >> IFX_SSC_SFCON_PAUSE_DATA_OFFSET))
- || (info->frm_opts.IdleClock & ~(IFX_SSC_SFCON_PAUSE_CLOCK_MASK >> IFX_SSC_SFCON_PAUSE_CLOCK_OFFSET)))
- return -EINVAL;
-
- // read interrupt bits (they're not changed here)
- tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_SFCON) &
- (IFX_SSC_SFCON_FIR_ENABLE_BEFORE_PAUSE | IFX_SSC_SFCON_FIR_ENABLE_AFTER_PAUSE);
-
- // set all values with respect to it's bit position (for data and pause
- // length set N-1)
- tmp = (info->frm_opts.DataLength - 1) << IFX_SSC_SFCON_DATA_LENGTH_OFFSET;
- tmp |= (info->frm_opts.PauseLength - 1) << IFX_SSC_SFCON_PAUSE_LENGTH_OFFSET;
- tmp |= info->frm_opts.IdleData << IFX_SSC_SFCON_PAUSE_DATA_OFFSET;
- tmp |= info->frm_opts.IdleClock << IFX_SSC_SFCON_PAUSE_CLOCK_OFFSET;
- tmp |= info->frm_opts.FrameEnable * IFX_SSC_SFCON_SF_ENABLE;
- tmp |= info->frm_opts.StopAfterPause * IFX_SSC_SFCON_STOP_AFTER_PAUSE;
-
- WRITE_PERIPHERAL_REGISTER(tmp, info->mapbase + IFX_SSC_SFCON);
-
- return 0;
-}
-
-static int
-ifx_ssc_rxtx_mode_set (struct ifx_ssc_port *info, unsigned int val)
-{
- unsigned long tmp;
-
- if (!(info) || (val & ~(IFX_SSC_MODE_MASK)))
- return -EINVAL;
-
- if ((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_BUSY)
- || (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RXCNT) & IFX_SSC_RXCNT_TODO_MASK))
- return -EBUSY;
-
- tmp = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_CON) & ~(IFX_SSC_CON_RX_OFF | IFX_SSC_CON_TX_OFF)) | (val);
- WRITE_PERIPHERAL_REGISTER (tmp, info->mapbase + IFX_SSC_CON);
- info->opts.modeRxTx = val;
-
- return 0;
-}
-
-static int
-ifx_ssc_sethwopts (struct ifx_ssc_port *info)
-{
- unsigned long flags, bits;
- struct ifx_ssc_hwopts *opts = &info->opts;
-
- if ((opts->dataWidth < IFX_SSC_MIN_DATA_WIDTH)
- || (opts->dataWidth > IFX_SSC_MAX_DATA_WIDTH))
- return -EINVAL;
-
- bits = (opts->dataWidth - 1) << IFX_SSC_CON_DATA_WIDTH_OFFSET;
- bits |= IFX_SSC_CON_ENABLE_BYTE_VALID;
-
- if (opts->rxOvErrDetect)
- bits |= IFX_SSC_CON_RX_OFL_CHECK;
- if (opts->rxUndErrDetect)
- bits |= IFX_SSC_CON_RX_UFL_CHECK;
- if (opts->txOvErrDetect)
- bits |= IFX_SSC_CON_TX_OFL_CHECK;
- if (opts->txUndErrDetect)
- bits |= IFX_SSC_CON_TX_UFL_CHECK;
- if (opts->loopBack)
- bits |= IFX_SSC_CON_LOOPBACK_MODE;
- if (opts->echoMode)
- bits |= IFX_SSC_CON_ECHO_MODE_ON;
- if (opts->headingControl)
- bits |= IFX_SSC_CON_MSB_FIRST;
- if (opts->clockPhase)
- bits |= IFX_SSC_CON_LATCH_THEN_SHIFT;
- if (opts->clockPolarity)
- bits |= IFX_SSC_CON_CLOCK_FALL;
-
- switch (opts->modeRxTx)
- {
- case IFX_SSC_MODE_TX:
- bits |= IFX_SSC_CON_RX_OFF;
- break;
- case IFX_SSC_MODE_RX:
- bits |= IFX_SSC_CON_TX_OFF;
- break;
- }
-
- local_irq_save (flags);
-
- WRITE_PERIPHERAL_REGISTER (bits, info->mapbase + IFX_SSC_CON);
- WRITE_PERIPHERAL_REGISTER ((info->opts.gpoCs << IFX_SSC_GPOCON_ISCSB0_POS) |
- (info->opts.gpoInv << IFX_SSC_GPOCON_INVOUT0_POS), info->mapbase + IFX_SSC_GPOCON);
-
- WRITE_PERIPHERAL_REGISTER (info->opts.gpoCs << IFX_SSC_WHBGPOSTAT_SETOUT0_POS, info->mapbase + IFX_SSC_WHBGPOSTAT);
-
- //master mode
- if (opts->masterSelect)
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_MASTER_SELECT, info->mapbase + IFX_SSC_WHBSTATE);
- else
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_MASTER_SELECT, info->mapbase + IFX_SSC_WHBSTATE);
-
- // init serial framing
- WRITE_PERIPHERAL_REGISTER (0, info->mapbase + IFX_SSC_SFCON);
- /* set up the port pins */
- //check for general requirements to switch (external) pad/pin characteristics
- /* TODO: P0.9 SPI_CS4, P0.10 SPI_CS5, P 0.11 SPI_CS6, because of ASC0 */
- /* p0.15 SPI_CS1(EEPROM), P0.13 SPI_CS3, */
- /* Set p0.15 to alternative 01, others to 00 (In/OUT) */
- *(IFXMIPS_GPIO_P0_DIR) = (*IFXMIPS_GPIO_P0_DIR) | (0xA000);
- *(IFXMIPS_GPIO_P0_ALTSEL0) = (((*IFXMIPS_GPIO_P0_ALTSEL0) | (0x8000)) & (~(0x2000)));
- *(IFXMIPS_GPIO_P0_ALTSEL1) = (((*IFXMIPS_GPIO_P0_ALTSEL1) & (~0x8000)) & (~(0x2000)));
- *(IFXMIPS_GPIO_P0_OD) = (*IFXMIPS_GPIO_P0_OD) | 0xA000;
-
- /* p1.6 SPI_CS2(SFLASH), p1.0 SPI_DIN, p1.1 SPI_DOUT, p1.2 SPI_CLK */
- *(IFXMIPS_GPIO_P1_DIR) = ((*IFXMIPS_GPIO_P1_DIR) | (0x46)) & (~1);
- *(IFXMIPS_GPIO_P1_ALTSEL0) = ((*IFXMIPS_GPIO_P1_ALTSEL0) | (0x47));
- *(IFXMIPS_GPIO_P1_ALTSEL1) = (*IFXMIPS_GPIO_P1_ALTSEL1) & (~0x47);
- *(IFXMIPS_GPIO_P1_OD) = (*IFXMIPS_GPIO_P1_OD) | 0x0046;
-
- /*CS3 */
- /*TODO: CS4 CS5 CS6 */
- *IFXMIPS_GPIO_P0_OUT = ((*IFXMIPS_GPIO_P0_OUT) | 0x2000);
-
- local_irq_restore (flags);
-
- return 0;
-}
-
-static int
-ifx_ssc_set_baud (struct ifx_ssc_port *info, unsigned int baud)
-{
- unsigned int ifx_ssc_clock;
- unsigned int br;
- unsigned long flags;
- bool enabled;
- int retval = 0;
-
- ifx_ssc_clock = ifx_ssc_get_kernel_clk(info);
- if (ifx_ssc_clock == 0)
- {
- retval = -EINVAL;
- goto out;
- }
-
- local_irq_save (flags);
-
- enabled = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_IS_ENABLED);
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
-
- br = (((ifx_ssc_clock >> 1) + baud / 2) / baud) - 1;
- wmb();
-
- if (br > 0xffff || ((br == 0) &&
- ((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_IS_MASTER) == 0))) {
- local_irq_restore (flags);
- printk ("%s: invalid baudrate %u\n", __func__, baud);
- return -EINVAL;
- }
-
- WRITE_PERIPHERAL_REGISTER (br, info->mapbase + IFX_SSC_BR);
-
- if (enabled)
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
-
- local_irq_restore(flags);
-
-out:
- return retval;
-}
-
-static int
-ifx_ssc_hwinit (struct ifx_ssc_port *info)
-{
- unsigned long flags;
- bool enabled;
-
- enabled = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_IS_ENABLED);
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
-
- if (ifx_ssc_sethwopts (info) < 0)
- {
- printk ("%s: setting the hardware options failed\n", __func__);
- return -EINVAL;
- }
-
- if (ifx_ssc_set_baud (info, info->baud) < 0)
- {
- printk ("%s: setting the baud rate failed\n", __func__);
- return -EINVAL;
- }
-
- local_irq_save (flags);
-
- /* TX FIFO */
- WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_TXFIFO_FL << IFX_SSC_XFCON_ITL_OFFSET) | IFX_SSC_XFCON_FIFO_ENABLE,
- info->mapbase + IFX_SSC_TXFCON);
- /* RX FIFO */
- WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_RXFIFO_FL << IFX_SSC_XFCON_ITL_OFFSET) | IFX_SSC_XFCON_FIFO_ENABLE,
- info->mapbase + IFX_SSC_RXFCON);
-
- local_irq_restore (flags);
-
- if (enabled)
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
-
- return 0;
-}
-
-int
-ifx_ssc_ioctl (struct inode *inode, struct file *filp, unsigned int cmd, unsigned long data)
-{
- struct ifx_ssc_port *info;
- int line, ret_val = 0;
- unsigned long flags;
- unsigned long tmp;
- int from_kernel = 0;
-
- if ((inode == (struct inode *) 0) || (inode == (struct inode *) 1))
- {
- from_kernel = 1;
- line = (int) inode;
- } else {
- line = MINOR (filp->f_dentry->d_inode->i_rdev);
- }
-
- if (line < 0 || line >= PORT_CNT)
- return -ENXIO;
-
- info = &isp[line];
-
- switch (cmd)
- {
- case IFX_SSC_STATS_READ:
- /* data must be a pointer to a struct ifx_ssc_statistics */
- if (from_kernel)
- memcpy ((void *) data, (void *) &info->stats,
- sizeof (struct ifx_ssc_statistics));
- else if (copy_to_user ((void *) data,
- (void *) &info->stats,
- sizeof (struct ifx_ssc_statistics)))
- ret_val = -EFAULT;
- break;
- case IFX_SSC_STATS_RESET:
- /* just resets the statistics counters */
- memset ((void *) &info->stats, 0,
- sizeof (struct ifx_ssc_statistics));
- break;
- case IFX_SSC_BAUD_SET:
- /* if the buffers are not empty then the port is */
- /* busy and we shouldn't change things on-the-fly! */
- if (!info->txbuf || !info->rxbuf ||
- (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE)
- & IFX_SSC_STATE_BUSY)) {
- ret_val = -EBUSY;
- break;
- }
- /* misuse flags */
- if (from_kernel)
- flags = *((unsigned long *) data);
- else if (copy_from_user ((void *) &flags,
- (void *) data, sizeof (flags))) {
- ret_val = -EFAULT;
- break;
- }
- if (flags == 0) {
- ret_val = -EINVAL;
- break;
- }
- if (ifx_ssc_set_baud (info, flags) < 0) {
- ret_val = -EINVAL;
- break;
- }
- info->baud = flags;
- break;
- case IFX_SSC_BAUD_GET:
- if (from_kernel)
- *((unsigned int *) data) = info->baud;
- else if (copy_to_user ((void *) data,
- (void *) &info->baud,
- sizeof (unsigned long)))
- ret_val = -EFAULT;
- break;
- case IFX_SSC_RXTX_MODE_SET:
- if (from_kernel)
- tmp = *((unsigned long *) data);
- else if (copy_from_user ((void *) &tmp,
- (void *) data, sizeof (tmp))) {
- ret_val = -EFAULT;
- break;
- }
- ret_val = ifx_ssc_rxtx_mode_set (info, tmp);
- break;
- case IFX_SSC_RXTX_MODE_GET:
- tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_CON) &
- (~(IFX_SSC_CON_RX_OFF | IFX_SSC_CON_TX_OFF));
- if (from_kernel)
- *((unsigned int *) data) = tmp;
- else if (copy_to_user ((void *) data,
- (void *) &tmp, sizeof (tmp)))
- ret_val = -EFAULT;
- break;
-
- case IFX_SSC_ABORT:
- ifx_ssc_abort (info);
- break;
-
- case IFX_SSC_GPO_OUT_SET:
- if (from_kernel)
- tmp = *((unsigned long *) data);
- else if (copy_from_user ((void *) &tmp,
- (void *) data, sizeof (tmp))) {
- ret_val = -EFAULT;
- break;
- }
- if (tmp > IFX_SSC_MAX_GPO_OUT)
- ret_val = -EINVAL;
- else
- WRITE_PERIPHERAL_REGISTER
- (1 << (tmp + IFX_SSC_WHBGPOSTAT_SETOUT0_POS),
- info->mapbase + IFX_SSC_WHBGPOSTAT);
- break;
- case IFX_SSC_GPO_OUT_CLR:
- if (from_kernel)
- tmp = *((unsigned long *) data);
- else if (copy_from_user ((void *) &tmp,
- (void *) data, sizeof (tmp))) {
- ret_val = -EFAULT;
- break;
- }
- if (tmp > IFX_SSC_MAX_GPO_OUT)
- ret_val = -EINVAL;
- else {
- WRITE_PERIPHERAL_REGISTER
- (1 << (tmp + IFX_SSC_WHBGPOSTAT_CLROUT0_POS),
- info->mapbase + IFX_SSC_WHBGPOSTAT);
- }
- break;
- case IFX_SSC_GPO_OUT_GET:
- tmp = READ_PERIPHERAL_REGISTER
- (info->mapbase + IFX_SSC_GPOSTAT);
- if (from_kernel)
- *((unsigned int *) data) = tmp;
- else if (copy_to_user ((void *) data,
- (void *) &tmp, sizeof (tmp)))
- ret_val = -EFAULT;
- break;
- case IFX_SSC_FRM_STATUS_GET:
- ifx_ssc_frm_status_get (info);
- if (from_kernel)
- memcpy ((void *) data, (void *) &info->frm_status,
- sizeof (struct ifx_ssc_frm_status));
- else if (copy_to_user ((void *) data,
- (void *) &info->frm_status,
- sizeof (struct ifx_ssc_frm_status)))
- ret_val = -EFAULT;
- break;
- case IFX_SSC_FRM_CONTROL_GET:
- ifx_ssc_frm_control_get (info);
- if (from_kernel)
- memcpy ((void *) data, (void *) &info->frm_opts,
- sizeof (struct ifx_ssc_frm_opts));
- else if (copy_to_user ((void *) data,
- (void *) &info->frm_opts,
- sizeof (struct ifx_ssc_frm_opts)))
- ret_val = -EFAULT;
- break;
- case IFX_SSC_FRM_CONTROL_SET:
- if (from_kernel)
- memcpy ((void *) &info->frm_opts, (void *) data,
- sizeof (struct ifx_ssc_frm_opts));
- else if (copy_to_user ((void *) &info->frm_opts,
- (void *) data,
- sizeof (struct ifx_ssc_frm_opts))) {
- ret_val = -EFAULT;
- break;
- }
- ret_val = ifx_ssc_frm_control_set (info);
- break;
- case IFX_SSC_HWOPTS_SET:
- /* data must be a pointer to a struct ifx_ssc_hwopts */
- /* if the buffers are not empty then the port is */
- /* busy and we shouldn't change things on-the-fly! */
- if (!info->txbuf || !info->rxbuf ||
- (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE)
- & IFX_SSC_STATE_BUSY)) {
- ret_val = -EBUSY;
- break;
- }
- if (from_kernel)
- memcpy ((void *) &info->opts, (void *) data,
- sizeof (struct ifx_ssc_hwopts));
- else if (copy_from_user ((void *) &info->opts,
- (void *) data,
- sizeof (struct ifx_ssc_hwopts))) {
- ret_val = -EFAULT;
- break;
- }
- if (ifx_ssc_hwinit (info) < 0) {
- ret_val = -EIO;
- }
- break;
- case IFX_SSC_HWOPTS_GET:
- /* data must be a pointer to a struct ifx_ssc_hwopts */
- if (from_kernel)
- memcpy ((void *) data, (void *) &info->opts,
- sizeof (struct ifx_ssc_hwopts));
- else if (copy_to_user ((void *) data,
- (void *) &info->opts,
- sizeof (struct ifx_ssc_hwopts)))
- ret_val = -EFAULT;
- break;
- default:
- ret_val = -ENOIOCTLCMD;
- }
-
- return ret_val;
-}
-EXPORT_SYMBOL(ifx_ssc_ioctl);
-
-static int
-ifx_ssc1_read_proc (char *page, char **start, off_t offset, int count, int *eof, void *data)
-{
- int off = 0;
- unsigned long flags;
-
- local_save_flags(flags);
- local_irq_disable();
-
- off += sprintf (page + off, "Statistics for Infineon Synchronous Serial Controller SSC1\n");
- off += sprintf (page + off, "RX overflow errors %d\n", isp[0].stats.rxOvErr);
- off += sprintf (page + off, "RX underflow errors %d\n", isp[0].stats.rxUnErr);
- off += sprintf (page + off, "TX overflow errors %d\n", isp[0].stats.txOvErr);
- off += sprintf (page + off, "TX underflow errors %d\n", isp[0].stats.txUnErr);
- off += sprintf (page + off, "Abort errors %d\n", isp[0].stats.abortErr);
- off += sprintf (page + off, "Mode errors %d\n", isp[0].stats.modeErr);
- off += sprintf (page + off, "RX Bytes %d\n", isp[0].stats.rxBytes);
- off += sprintf (page + off, "TX Bytes %d\n", isp[0].stats.txBytes);
-
- local_irq_restore(flags);
- *eof = 1;
-
- return off;
-}
-
-int __init
-ifx_ssc_init (void)
-{
- struct ifx_ssc_port *info;
- int i, nbytes;
- unsigned long flags;
- int ret_val;
-
- ret_val = -ENOMEM;
- nbytes = PORT_CNT * sizeof(struct ifx_ssc_port);
- isp = (struct ifx_ssc_port*)kmalloc(nbytes, GFP_KERNEL);
-
- if (isp == NULL)
- {
- printk("%s: no memory for isp\n", __func__);
- return (ret_val);
- }
- memset(isp, 0, nbytes);
-
- ret_val = -ENXIO;
- if ((i = register_chrdev (maj, "ssc", &ifx_ssc_fops)) < 0)
- {
- printk ("Unable to register major %d for the Infineon SSC\n", maj);
- if (maj == 0)
- {
- goto errout;
- } else {
- maj = 0;
- if ((i = register_chrdev (maj, "ssc", &ifx_ssc_fops)) < 0)
- {
- printk ("Unable to register major %d for the Infineon SSC\n", maj);
- goto errout;
- }
- }
- }
-
- if (maj == 0)
- maj = i;
-
- /* set default values in ifx_ssc_port */
- for (i = 0; i < PORT_CNT; i++) {
- info = &isp[i];
- info->port_nr = i;
- /* default values for the HwOpts */
- info->opts.AbortErrDetect = IFX_SSC_DEF_ABRT_ERR_DETECT;
- info->opts.rxOvErrDetect = IFX_SSC_DEF_RO_ERR_DETECT;
- info->opts.rxUndErrDetect = IFX_SSC_DEF_RU_ERR_DETECT;
- info->opts.txOvErrDetect = IFX_SSC_DEF_TO_ERR_DETECT;
- info->opts.txUndErrDetect = IFX_SSC_DEF_TU_ERR_DETECT;
- info->opts.loopBack = IFX_SSC_DEF_LOOP_BACK;
- info->opts.echoMode = IFX_SSC_DEF_ECHO_MODE;
- info->opts.idleValue = IFX_SSC_DEF_IDLE_DATA;
- info->opts.clockPolarity = IFX_SSC_DEF_CLOCK_POLARITY;
- info->opts.clockPhase = IFX_SSC_DEF_CLOCK_PHASE;
- info->opts.headingControl = IFX_SSC_DEF_HEADING_CONTROL;
- info->opts.dataWidth = IFX_SSC_DEF_DATA_WIDTH;
- info->opts.modeRxTx = IFX_SSC_DEF_MODE_RXTX;
- info->opts.gpoCs = IFX_SSC_DEF_GPO_CS;
- info->opts.gpoInv = IFX_SSC_DEF_GPO_INV;
- info->opts.masterSelect = IFX_SSC_DEF_MASTERSLAVE;
- info->baud = IFX_SSC_DEF_BAUDRATE;
- info->rxbuf = NULL;
- info->txbuf = NULL;
- /* values specific to SSC1 */
- if (i == 0) {
- info->mapbase = IFXMIPS_SSC1_BASE_ADDR;
- info->txirq = IFXMIPS_SSC_TIR;
- info->rxirq = IFXMIPS_SSC_RIR;
- info->errirq = IFXMIPS_SSC_EIR;
- }
-
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_DEF_RMC << IFX_CLC_RUN_DIVIDER_OFFSET, info->mapbase + IFX_SSC_CLC);
-
- init_waitqueue_head (&info->rwait);
-
- local_irq_save (flags);
-
- // init serial framing register
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_DEF_SFCON, info->mapbase + IFX_SSC_SFCON);
-
- ret_val = request_irq(info->txirq, ifx_ssc_tx_int, SA_INTERRUPT, "ifx_ssc_tx", info);
- if (ret_val)
- {
- printk("%s: unable to get irq %d\n", __func__, info->txirq);
- local_irq_restore(flags);
- goto errout;
- }
-
- ret_val = request_irq(info->rxirq, ifx_ssc_rx_int, SA_INTERRUPT, "ifx_ssc_rx", info);
- if (ret_val)
- {
- printk ("%s: unable to get irq %d\n", __func__, info->rxirq);
- local_irq_restore (flags);
- goto irqerr;
- }
-
- ret_val = request_irq(info->errirq, ifx_ssc_err_int, SA_INTERRUPT,"ifx_ssc_err", info);
- if (ret_val)
- {
- printk ("%s: unable to get irq %d\n", __func__, info->errirq);
- local_irq_restore (flags);
- goto irqerr;
- }
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_DEF_IRNEN, info->mapbase + IFX_SSC_IRN_EN);
-
- enable_irq(info->txirq);
- enable_irq(info->rxirq);
- enable_irq(info->errirq);
-
- local_irq_restore (flags);
- }
-
- for (i = 0; i < PORT_CNT; i++) {
- info = &isp[i];
- if (ifx_ssc_hwinit (info) < 0)
- {
- printk ("%s: hardware init failed for port %d\n", __func__, i);
- goto irqerr;
- }
- }
-
- create_proc_read_entry ("driver/ssc1", 0, NULL, ifx_ssc1_read_proc, NULL);
-
- return 0;
-
-irqerr:
- free_irq(isp[0].txirq, &isp[0]);
- free_irq(isp[0].rxirq, &isp[0]);
- free_irq(isp[0].errirq, &isp[0]);
-errout:
- kfree (isp);
- return (ret_val);
-}
-
-void
-ifx_ssc_cleanup_module (void)
-{
- int i;
-
- for (i = 0; i < PORT_CNT; i++) {
- WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, isp[i].mapbase + IFX_SSC_WHBSTATE);
- free_irq(isp[i].txirq, &isp[i]);
- free_irq(isp[i].rxirq, &isp[i]);
- free_irq(isp[i].errirq, &isp[i]);
- }
- kfree (isp);
- remove_proc_entry ("driver/ssc1", NULL);
-}
-
-module_init(ifx_ssc_init);
-module_exit(ifx_ssc_cleanup_module);
-
-
-inline int
-ifx_ssc_cs_low (u32 pin)
-{
- int ret = 0;
- if ((ret = ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_GPO_OUT_CLR, (unsigned long) &pin)))
- printk ("clear CS %d fails\n", pin);
- wmb ();
-
- return ret;
-}
-EXPORT_SYMBOL(ifx_ssc_cs_low);
-
-inline int
-ifx_ssc_cs_high (u32 pin)
-{
- int ret = 0;
- if ((ret = ifx_ssc_ioctl((struct inode *) 0, NULL, IFX_SSC_GPO_OUT_SET, (unsigned long) &pin)))
- printk ("set CS %d fails\n", pin);
- wmb ();
-
- return ret;
-}
-EXPORT_SYMBOL(ifx_ssc_cs_high);
-
-static int
-ssc_session (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len)
-{
- int ret = 0;
-
- char *ssc_tx_buf = NULL;
- char *ssc_rx_buf = NULL;
- int eff_size = 0;
- u8 mode = 0;
-
- if (tx_buf == NULL && tx_len == 0 && rx_buf == NULL && rx_len == 0) {
- printk ("invalid parameters\n");
- ret = -EINVAL;
- goto ssc_session_exit;
- }
- else if (tx_buf == NULL || tx_len == 0) {
- if (rx_buf != NULL && rx_len != 0) {
- mode = IFX_SSC_MODE_RX;
- }
- else {
- printk ("invalid parameters\n");
- ret = -EINVAL;
- goto ssc_session_exit;
- }
- }
- else if (rx_buf == NULL || rx_len == 0) {
- if (tx_buf != NULL && tx_len != 0) {
- mode = IFX_SSC_MODE_TX;
- }
- else {
- printk ("invalid parameters\n");
- ret = -EINVAL;
- goto ssc_session_exit;
- }
- }
- else {
- mode = IFX_SSC_MODE_RXTX;
- }
-
- if (mode == IFX_SSC_MODE_RXTX) {
- eff_size = tx_len + rx_len;
- }
- else if (mode == IFX_SSC_MODE_RX) {
- eff_size = rx_len;
- }
- else {
- eff_size = tx_len;
- }
-
- //4 bytes alignment, required by driver
- /* change by TaiCheng */
- //if (in_irq()){
- if (1) {
- ssc_tx_buf =
- (char *) kmalloc (sizeof (char) *
- ((eff_size + 3) & (~3)),
- GFP_ATOMIC);
- ssc_rx_buf =
- (char *) kmalloc (sizeof (char) *
- ((eff_size + 3) & (~3)),
- GFP_ATOMIC);
- }
- else {
- ssc_tx_buf =
- (char *) kmalloc (sizeof (char) *
- ((eff_size + 3) & (~3)),
- GFP_KERNEL);
- ssc_rx_buf =
- (char *) kmalloc (sizeof (char) *
- ((eff_size + 3) & (~3)),
- GFP_KERNEL);
- }
- if (ssc_tx_buf == NULL || ssc_rx_buf == NULL) {
- printk ("no memory for size of %d\n", eff_size);
- ret = -ENOMEM;
- goto ssc_session_exit;
- }
- memset ((void *) ssc_tx_buf, 0, eff_size);
- memset ((void *) ssc_rx_buf, 0, eff_size);
-
- if (tx_len > 0) {
- memcpy (ssc_tx_buf, tx_buf, tx_len);
- }
-
- ret = ifx_ssc_kwrite (0, ssc_tx_buf, eff_size);
-
- if (ret > 0) {
- ssc_tx_buf = NULL; //should be freed by ifx_ssc_kwrite
- }
-
- if (ret != eff_size) {
- printk ("ifx_ssc_write return %d\n", ret);
- goto ssc_session_exit;
- }
- ret = ifx_ssc_kread (0, ssc_rx_buf, eff_size);
- if (ret != eff_size) {
- printk ("ifx_ssc_read return %d\n", ret);
- goto ssc_session_exit;
- }
-
- memcpy (rx_buf, ssc_rx_buf + tx_len, rx_len);
-
- if (mode == IFX_SSC_MODE_TX) {
- ret = tx_len;
- }
- else {
- ret = rx_len;
- }
- ssc_session_exit:
-
- if (ssc_tx_buf != NULL)
- kfree (ssc_tx_buf);
- if (ssc_rx_buf != NULL)
- kfree (ssc_rx_buf);
-
- if (ret < 0) {
- printk ("ssc session fails\n");
- }
- return ret;
-}
-
-int
-ifx_ssc_txrx (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len)
-{
- return ssc_session(tx_buf, tx_len, rx_buf, rx_len);
-}
-EXPORT_SYMBOL(ifx_ssc_txrx);
-
-int
-ifx_ssc_tx (char *tx_buf, u32 tx_len)
-{
- return ssc_session(tx_buf, tx_len, NULL, 0);
-}
-EXPORT_SYMBOL(ifx_ssc_tx);
-
-int
-ifx_ssc_rx (char *rx_buf, u32 rx_len)
-{
- return ssc_session(NULL, 0, rx_buf, rx_len);
-}
-EXPORT_SYMBOL(ifx_ssc_rx);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
-MODULE_DESCRIPTION("ifxmips ssc driver");
-
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * This driver was originally based on the INCA-IP driver, but due to
+ * fundamental conceptual drawbacks there has been changed a lot.
+ *
+ * Based on INCA-IP driver Copyright (c) 2003 Gary Jennejohn <gj@denx.de>
+ * Based on the VxWorks drivers Copyright (c) 2002, Infineon Technologies.
+ *
+ * Copyright (C) 2006 infineon
+ * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
+ *
+ */
+
+#define IFAP_EEPROM_DRV_VERSION "0.0.1"
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fs.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/mm.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+
+#include <asm/ifxmips/ifxmips.h>
+#include <asm/ifxmips/ifxmips_irq.h>
+#include <asm/ifxmips/ifx_ssc_defines.h>
+#include <asm/ifxmips/ifx_ssc.h>
+
+/* allow the user to set the major device number */
+static int ifxmips_eeprom_maj = 0;
+
+extern int ifx_ssc_init (void);
+extern int ifx_ssc_open (struct inode *inode, struct file *filp);
+extern int ifx_ssc_close (struct inode *inode, struct file *filp);
+extern void ifx_ssc_cleanup_module (void);
+extern int ifx_ssc_ioctl (struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long data);
+extern ssize_t ifx_ssc_kwrite (int port, const char *kbuf, size_t len);
+extern ssize_t ifx_ssc_kread (int port, char *kbuf, size_t len);
+
+extern int ifx_ssc_cs_low (unsigned int pin);
+extern int ifx_ssc_cs_high (unsigned int pin);
+extern int ifx_ssc_txrx (char *tx_buf, unsigned int tx_len, char *rx_buf, unsigned int rx_len);
+extern int ifx_ssc_tx (char *tx_buf, unsigned int tx_len);
+extern int ifx_ssc_rx (char *rx_buf, unsigned int rx_len);
+
+#define EEPROM_CS IFX_SSC_WHBGPOSTAT_OUT0_POS
+
+/* commands for EEPROM, x25160, x25140 */
+#define EEPROM_WREN ((unsigned char)0x06)
+#define EEPROM_WRDI ((unsigned char)0x04)
+#define EEPROM_RDSR ((unsigned char)0x05)
+#define EEPROM_WRSR ((unsigned char)0x01)
+#define EEPROM_READ ((unsigned char)0x03)
+#define EEPROM_WRITE ((unsigned char)0x02)
+#define EEPROM_PAGE_SIZE 4
+#define EEPROM_SIZE 512
+
+static int
+eeprom_rdsr (void)
+{
+ int ret = 0;
+ unsigned char cmd = EEPROM_RDSR;
+ unsigned long flag;
+ char status;
+
+ local_irq_save(flag);
+
+ if ((ret = ifx_ssc_cs_low(EEPROM_CS)) == 0)
+ if ((ret = ifx_ssc_txrx(&cmd, 1, &status, 1)) >= 0)
+ ret = status & 1;
+
+ ifx_ssc_cs_high(EEPROM_CS);
+ local_irq_restore(flag);
+
+ return ret;
+}
+
+void
+eeprom_wip_over (void)
+{
+ while (eeprom_rdsr())
+ printk("waiting for eeprom\n");
+}
+
+static int
+eeprom_wren (void)
+{
+ unsigned char cmd = EEPROM_WREN;
+ int ret = 0;
+ unsigned long flag;
+
+ local_irq_save(flag);
+ if ((ret = ifx_ssc_cs_low(EEPROM_CS)) == 0)
+ if ((ret = ifx_ssc_tx(&cmd, 1)) >= 0)
+ ret = 0;
+
+ ifx_ssc_cs_high(EEPROM_CS);
+ local_irq_restore(flag);
+
+ if (!ret)
+ eeprom_wip_over();
+
+ return ret;
+}
+
+static int
+eeprom_wrsr (void)
+{
+ int ret = 0;
+ unsigned char cmd[2];
+ unsigned long flag;
+
+ cmd[0] = EEPROM_WRSR;
+ cmd[1] = 0;
+
+ if ((ret = eeprom_wren()))
+ {
+ printk ("eeprom_wren fails\n");
+ goto out1;
+ }
+
+ local_irq_save(flag);
+
+ if ((ret = ifx_ssc_cs_low(EEPROM_CS)))
+ goto out;
+
+ if ((ret = ifx_ssc_tx(cmd, 2)) < 0) {
+ ifx_ssc_cs_high(EEPROM_CS);
+ goto out;
+ }
+
+ if ((ret = ifx_ssc_cs_low(EEPROM_CS)))
+ goto out;
+
+ local_irq_restore(flag);
+ eeprom_wip_over();
+
+ return ret;
+
+out:
+ local_irq_restore (flag);
+ eeprom_wip_over ();
+
+out1:
+ return ret;
+}
+
+static int
+eeprom_read (unsigned int addr, unsigned char *buf, unsigned int len)
+{
+ int ret = 0;
+ unsigned char write_buf[2];
+ unsigned int eff = 0;
+ unsigned long flag;
+
+ while (1)
+ {
+ eeprom_wip_over();
+ eff = EEPROM_PAGE_SIZE - (addr % EEPROM_PAGE_SIZE);
+ eff = (eff < len) ? eff : len;
+ local_irq_save(flag);
+
+ if ((ret = ifx_ssc_cs_low(EEPROM_CS)) < 0)
+ goto out;
+
+ write_buf[0] = EEPROM_READ | ((unsigned char) ((addr & 0x100) >> 5));
+ write_buf[1] = (addr & 0xff);
+
+ if ((ret = ifx_ssc_txrx (write_buf, 2, buf, eff)) != eff)
+ {
+ printk("ssc_txrx fails %d\n", ret);
+ ifx_ssc_cs_high (EEPROM_CS);
+ goto out;
+ }
+
+ buf += ret;
+ len -= ret;
+ addr += ret;
+
+ if ((ret = ifx_ssc_cs_high(EEPROM_CS)))
+ goto out;
+
+ local_irq_restore(flag);
+
+ if (len <= 0)
+ goto out2;
+ }
+
+out:
+ local_irq_restore (flag);
+out2:
+ return ret;
+}
+
+static int
+eeprom_write (unsigned int addr, unsigned char *buf, unsigned int len)
+{
+ int ret = 0;
+ unsigned int eff = 0;
+ unsigned char write_buf[2];
+ int i;
+ unsigned char rx_buf[EEPROM_PAGE_SIZE];
+
+ while (1)
+ {
+ eeprom_wip_over();
+
+ if ((ret = eeprom_wren()))
+ {
+ printk("eeprom_wren fails\n");
+ goto out;
+ }
+
+ write_buf[0] = EEPROM_WRITE | ((unsigned char) ((addr & 0x100) >> 5));
+ write_buf[1] = (addr & 0xff);
+
+ eff = EEPROM_PAGE_SIZE - (addr % EEPROM_PAGE_SIZE);
+ eff = (eff < len) ? eff : len;
+
+ printk("EEPROM Write:\n");
+ for (i = 0; i < eff; i++) {
+ printk("%2x ", buf[i]);
+ if ((i % 16) == 15)
+ printk("\n");
+ }
+ printk("\n");
+
+ if ((ret = ifx_ssc_cs_low(EEPROM_CS)))
+ goto out;
+
+ if ((ret = ifx_ssc_tx (write_buf, 2)) < 0)
+ {
+ printk("ssc_tx fails %d\n", ret);
+ ifx_ssc_cs_high(EEPROM_CS);
+ goto out;
+ }
+
+ if ((ret = ifx_ssc_tx (buf, eff)) != eff)
+ {
+ printk("ssc_tx fails %d\n", ret);
+ ifx_ssc_cs_high(EEPROM_CS);
+ goto out;
+ }
+
+ buf += ret;
+ len -= ret;
+ addr += ret;
+
+ if ((ret = ifx_ssc_cs_high (EEPROM_CS)))
+ goto out;
+
+ printk ("<==");
+ eeprom_read((addr - eff), rx_buf, eff);
+ for (i = 0; i < eff; i++)
+ {
+ printk ("[%x]", rx_buf[i]);
+ }
+ printk ("\n");
+
+ if (len <= 0)
+ break;
+ }
+
+out:
+ return ret;
+}
+
+int
+ifxmips_eeprom_open (struct inode *inode, struct file *filp)
+{
+ filp->f_pos = 0;
+ return 0;
+}
+
+int
+ifxmips_eeprom_close (struct inode *inode, struct file *filp)
+{
+ return 0;
+}
+
+int
+ifxmips_eeprom_ioctl (struct inode *inode, struct file *filp, unsigned int cmd, unsigned long data)
+{
+ return 0;
+}
+
+ssize_t
+ifxmips_eeprom_read (char *buf, size_t len, unsigned int addr)
+{
+ int ret = 0;
+ unsigned int data;
+
+ printk("addr:=%d\n", addr);
+ printk("len:=%d\n", len);
+
+ if ((addr + len) > EEPROM_SIZE)
+ {
+ printk("invalid len\n");
+ addr = 0;
+ len = EEPROM_SIZE / 2;
+ }
+
+ if ((ret = ifx_ssc_open((struct inode *) 0, NULL)))
+ {
+ printk("ifxmips_eeprom_open fails\n");
+ goto out;
+ }
+
+ data = (unsigned int)IFX_SSC_MODE_RXTX;
+
+ if ((ret = ifx_ssc_ioctl((struct inode *) 0, NULL, IFX_SSC_RXTX_MODE_SET, (unsigned long) &data)))
+ {
+ printk("set RXTX mode fails\n");
+ goto out;
+ }
+
+ if ((ret = eeprom_wrsr()))
+ {
+ printk("EEPROM reset fails\n");
+ goto out;
+ }
+
+ if ((ret = eeprom_read(addr, buf, len)))
+ {
+ printk("eeprom read fails\n");
+ goto out;
+ }
+
+out:
+ if (ifx_ssc_close((struct inode *) 0, NULL))
+ printk("ifxmips_eeprom_close fails\n");
+
+ return len;
+}
+EXPORT_SYMBOL(ifxmips_eeprom_read);
+
+static ssize_t
+ifxmips_eeprom_fops_read (struct file *filp, char *ubuf, size_t len, loff_t * off)
+{
+ int ret = 0;
+ unsigned char ssc_rx_buf[EEPROM_SIZE];
+ long flag;
+
+ if (*off >= EEPROM_SIZE)
+ return 0;
+
+ if (*off + len > EEPROM_SIZE)
+ len = EEPROM_SIZE - *off;
+
+ if (len == 0)
+ return 0;
+
+ local_irq_save(flag);
+
+ if ((ret = ifxmips_eeprom_read(ssc_rx_buf, len, *off)) < 0)
+ {
+ printk("read fails, err=%x\n", ret);
+ local_irq_restore(flag);
+ return ret;
+ }
+
+ if (copy_to_user((void*)ubuf, ssc_rx_buf, ret) != 0)
+ {
+ local_irq_restore(flag);
+ ret = -EFAULT;
+ }
+
+ local_irq_restore(flag);
+ *off += len;
+
+ return len;
+}
+
+ssize_t
+ifxmips_eeprom_write (char *buf, size_t len, unsigned int addr)
+{
+ int ret = 0;
+ unsigned int data;
+
+ if ((ret = ifx_ssc_open ((struct inode *) 0, NULL)))
+ {
+ printk ("ifxmips_eeprom_open fails\n");
+ goto out;
+ }
+
+ data = (unsigned int) IFX_SSC_MODE_RXTX;
+
+ if ((ret = ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_RXTX_MODE_SET, (unsigned long) &data)))
+ {
+ printk ("set RXTX mode fails\n");
+ goto out;
+ }
+
+ if ((ret = eeprom_wrsr ())) {
+ printk ("EEPROM reset fails\n");
+ goto out;
+ }
+
+ if ((ret = eeprom_write (addr, buf, len))) {
+ printk ("eeprom write fails\n");
+ goto out;
+ }
+
+out:
+ if (ifx_ssc_close ((struct inode *) 0, NULL))
+ printk ("ifxmips_eeprom_close fails\n");
+
+ return ret;
+}
+EXPORT_SYMBOL(ifxmips_eeprom_write);
+
+static ssize_t
+ifxmips_eeprom_fops_write (struct file *filp, const char *ubuf, size_t len, loff_t * off)
+{
+ int ret = 0;
+ unsigned char ssc_tx_buf[EEPROM_SIZE];
+
+ if (*off >= EEPROM_SIZE)
+ return 0;
+
+ if (len + *off > EEPROM_SIZE)
+ len = EEPROM_SIZE - *off;
+
+ if ((ret = copy_from_user (ssc_tx_buf, ubuf, len)))
+ return EFAULT;
+
+ ret = ifxmips_eeprom_write (ssc_tx_buf, len, *off);
+
+ if (ret > 0)
+ *off = ret;
+
+ return ret;
+}
+
+loff_t
+ifxmips_eeprom_llseek (struct file * filp, loff_t off, int whence)
+{
+ loff_t newpos;
+ switch (whence) {
+ case SEEK_SET:
+ newpos = off;
+ break;
+
+ case SEEK_CUR:
+ newpos = filp->f_pos + off;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ if (newpos < 0)
+ return -EINVAL;
+
+ filp->f_pos = newpos;
+
+ return newpos;
+}
+
+static struct file_operations ifxmips_eeprom_fops = {
+ owner:THIS_MODULE,
+ llseek:ifxmips_eeprom_llseek,
+ read:ifxmips_eeprom_fops_read,
+ write:ifxmips_eeprom_fops_write,
+ ioctl:ifxmips_eeprom_ioctl,
+ open:ifxmips_eeprom_open,
+ release:ifxmips_eeprom_close,
+};
+
+int __init
+ifxmips_eeprom_init (void)
+{
+ int ret = 0;
+
+ ifxmips_eeprom_maj = register_chrdev(0, "eeprom", &ifxmips_eeprom_fops);
+
+ if (ifxmips_eeprom_maj < 0)
+ {
+ printk("failed to register eeprom device\n");
+ ret = -EINVAL;
+
+ goto out;
+ }
+
+ printk("ifxmips_eeprom : /dev/eeprom mayor %d\n", ifxmips_eeprom_maj);
+
+out:
+ return ret;
+}
+
+void __exit
+ifxmips_eeprom_cleanup_module (void)
+{
+ /*if (unregister_chrdev (ifxmips_eeprom_maj, "eeprom")) {
+ printk ("Unable to unregister major %d for the EEPROM\n",
+ maj);
+ }*/
+}
+
+module_exit (ifxmips_eeprom_cleanup_module);
+module_init (ifxmips_eeprom_init);
+
+MODULE_LICENSE ("GPL");
+MODULE_AUTHOR ("Peng Liu");
+MODULE_DESCRIPTION ("IFAP EEPROM driver");
+MODULE_SUPPORTED_DEVICE ("ifxmips_eeprom");
+
+
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) 2005 infineon
+ * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <linux/ioctl.h>
+#include <asm/semaphore.h>
+#include <asm/uaccess.h>
+#include <asm/ifxmips/ifxmips.h>
+#include <asm/ifxmips/ifxmips_ioctl.h>
+
+#define MAX_PORTS 2
+#define PINS_PER_PORT 16
+
+static unsigned int ifxmips_gpio_major = 0;
+
+/* TODO do we need this ? */
+static struct semaphore port_sem;
+
+/* TODO do we really need this ? return in a define is forbidden by coding style */
+#define IFXMIPS_GPIO_SANITY {if (port > MAX_PORTS || pin > PINS_PER_PORT) return -EINVAL; }
+
+int
+ifxmips_port_reserve_pin (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ printk("%s : call to obseleted function\n", __func__);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_reserve_pin);
+
+int
+ifxmips_port_free_pin (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ printk("%s : call to obseleted function\n", __func__);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_free_pin);
+
+int
+ifxmips_port_set_open_drain (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_OD + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_OD);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_open_drain);
+
+int
+ifxmips_port_clear_open_drain (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_OD + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_OD);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_open_drain);
+
+int
+ifxmips_port_set_pudsel (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_PUDSEL + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_PUDSEL);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_pudsel);
+
+int
+ifxmips_port_clear_pudsel (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_PUDSEL + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDSEL);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_pudsel);
+
+int
+ifxmips_port_set_puden (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_PUDEN + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_PUDEN);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_puden);
+
+int
+ifxmips_port_clear_puden (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_PUDEN + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_PUDEN);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_puden);
+
+int
+ifxmips_port_set_stoff (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_STOFF + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_STOFF);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_stoff);
+
+int
+ifxmips_port_clear_stoff (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_STOFF + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_STOFF);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_stoff);
+
+int
+ifxmips_port_set_dir_out (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_DIR + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_DIR);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_dir_out);
+
+int
+ifxmips_port_set_dir_in (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_DIR + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_DIR);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_dir_in);
+
+int
+ifxmips_port_set_output (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_OUT + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_OUT);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_output);
+
+int
+ifxmips_port_clear_output (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_OUT + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_OUT);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_output);
+
+int
+ifxmips_port_get_input (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+
+ if (readl(IFXMIPS_GPIO_P0_IN + (port * 0x30)) & (1 << pin))
+ return 0;
+ else
+ return 1;
+}
+EXPORT_SYMBOL(ifxmips_port_get_input);
+
+int
+ifxmips_port_set_altsel0 (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL0);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_altsel0);
+
+int
+ifxmips_port_clear_altsel0 (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_ALTSEL0 + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL0);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_altsel0);
+
+int
+ifxmips_port_set_altsel1 (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0x30)) | (1 << pin), IFXMIPS_GPIO_P0_ALTSEL1);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_set_altsel1);
+
+int
+ifxmips_port_clear_altsel1 (unsigned int port, unsigned int pin)
+{
+ IFXMIPS_GPIO_SANITY;
+ writel(readl(IFXMIPS_GPIO_P0_ALTSEL1 + (port * 0x30)) & ~(1 << pin), IFXMIPS_GPIO_P0_ALTSEL1);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifxmips_port_clear_altsel1);
+
+long ifxmips_port_read_procmem_helper(char* tag, u32* in_reg, char *buf)
+{
+ u32 reg, bit = 0;
+ unsigned int len, t;
+
+ len = sprintf(buf, "\n%s: ", tag);
+ reg = readl(in_reg);
+ bit = 0x80000000;
+ for (t = 0; t < 32; t++) {
+ if ((reg & bit) > 0)
+ len = len + sprintf(buf + len, "X");
+ else
+ len = len + sprintf(buf + len, " ");
+ bit = bit >> 1;
+ }
+
+ return len;
+}
+
+int
+ifxmips_port_read_procmem (char *buf, char **start, off_t offset, int count,
+ int *eof, void *data)
+{
+ long len = sprintf (buf, "\nIFXMips Port Settings\n");
+
+ len += sprintf (buf + len,
+ " 3 2 1 0\n");
+ len += sprintf (buf + len,
+ " 10987654321098765432109876543210\n");
+ len += sprintf (buf + len,
+ "----------------------------------------\n");
+
+ len += ifxmips_port_read_procmem_helper("P0-OUT", IFXMIPS_GPIO_P0_OUT, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P1-OUT", IFXMIPS_GPIO_P1_OUT, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P0-IN ", IFXMIPS_GPIO_P0_IN, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P1-IN ", IFXMIPS_GPIO_P1_IN, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P0-DIR", IFXMIPS_GPIO_P0_DIR, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P1-DIR", IFXMIPS_GPIO_P1_DIR, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P0-STO ", IFXMIPS_GPIO_P0_STOFF, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P1-STO ", IFXMIPS_GPIO_P1_STOFF, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P0-PUDE", IFXMIPS_GPIO_P0_PUDEN, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P1-PUDE", IFXMIPS_GPIO_P1_PUDEN, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P0-OD ", IFXMIPS_GPIO_P0_OD, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P1-OD ", IFXMIPS_GPIO_P1_OD, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P0-PUDS", IFXMIPS_GPIO_P0_PUDSEL, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P1-PUDS", IFXMIPS_GPIO_P1_PUDSEL, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P0-ALT0", IFXMIPS_GPIO_P0_ALTSEL0, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P1-ALT0", IFXMIPS_GPIO_P1_ALTSEL0, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P0-ALT1", IFXMIPS_GPIO_P0_ALTSEL1, &buf[len]);
+ len += ifxmips_port_read_procmem_helper("P1-ALT1", IFXMIPS_GPIO_P1_ALTSEL1, &buf[len]);
+ len = len + sprintf (buf + len, "\n\n");
+
+ *eof = 1;
+
+ return len;
+}
+
+static int
+ifxmips_port_open (struct inode *inode, struct file *filep)
+{
+ return 0;
+}
+
+static int
+ifxmips_port_release (struct inode *inode, struct file *filelp)
+{
+ return 0;
+}
+
+static int
+ifxmips_port_ioctl (struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg)
+{
+ int ret = 0;
+ volatile struct ifxmips_port_ioctl_parm parm;
+
+ if (_IOC_TYPE (cmd) != IFXMIPS_PORT_IOC_MAGIC)
+ return -EINVAL;
+
+ if (_IOC_DIR (cmd) & _IOC_WRITE) {
+ if (!access_ok
+ (VERIFY_READ, arg,
+ sizeof (struct ifxmips_port_ioctl_parm)))
+ return -EFAULT;
+ ret = copy_from_user ((void *) &parm, (void *) arg,
+ sizeof (struct ifxmips_port_ioctl_parm));
+ }
+ if (_IOC_DIR (cmd) & _IOC_READ) {
+ if (!access_ok
+ (VERIFY_WRITE, arg,
+ sizeof (struct ifxmips_port_ioctl_parm)))
+ return -EFAULT;
+ }
+
+ if (down_trylock (&port_sem) != 0)
+ return -EBUSY;
+
+ switch (cmd) {
+ case IFXMIPS_PORT_IOCOD:
+ if (parm.value == 0x00)
+ ifxmips_port_clear_open_drain(parm.port, parm.pin);
+ else
+ ifxmips_port_set_open_drain(parm.port, parm.pin);
+ break;
+
+ case IFXMIPS_PORT_IOCPUDSEL:
+ if (parm.value == 0x00)
+ ifxmips_port_clear_pudsel(parm.port, parm.pin);
+ else
+ ifxmips_port_set_pudsel(parm.port, parm.pin);
+ break;
+
+ case IFXMIPS_PORT_IOCPUDEN:
+ if (parm.value == 0x00)
+ ifxmips_port_clear_puden(parm.port, parm.pin);
+ else
+ ifxmips_port_set_puden(parm.port, parm.pin);
+ break;
+
+ case IFXMIPS_PORT_IOCSTOFF:
+ if (parm.value == 0x00)
+ ifxmips_port_clear_stoff(parm.port, parm.pin);
+ else
+ ifxmips_port_set_stoff(parm.port, parm.pin);
+ break;
+
+ case IFXMIPS_PORT_IOCDIR:
+ if (parm.value == 0x00)
+ ifxmips_port_set_dir_in(parm.port, parm.pin);
+ else
+ ifxmips_port_set_dir_out(parm.port, parm.pin);
+ break;
+
+ case IFXMIPS_PORT_IOCOUTPUT:
+ if (parm.value == 0x00)
+ ifxmips_port_clear_output(parm.port, parm.pin);
+ else
+ ifxmips_port_set_output(parm.port, parm.pin);
+ break;
+
+ case IFXMIPS_PORT_IOCALTSEL0:
+ if (parm.value == 0x00)
+ ifxmips_port_clear_altsel0(parm.port, parm.pin);
+ else
+ ifxmips_port_set_altsel0(parm.port, parm.pin);
+ break;
+
+ case IFXMIPS_PORT_IOCALTSEL1:
+ if (parm.value == 0x00)
+ ifxmips_port_clear_altsel1(parm.port, parm.pin);
+ else
+ ifxmips_port_set_altsel1(parm.port, parm.pin);
+ break;
+
+ case IFXMIPS_PORT_IOCINPUT:
+ parm.value = ifxmips_port_get_input(parm.port, parm.pin);
+ copy_to_user((void*)arg, (void*)&parm,
+ sizeof(struct ifxmips_port_ioctl_parm));
+ break;
+
+ default:
+ ret = -EINVAL;
+ }
+
+ up (&port_sem);
+
+ return ret;
+}
+
+static struct file_operations port_fops = {
+ .open = ifxmips_port_open,
+ .release = ifxmips_port_release,
+ .ioctl = ifxmips_port_ioctl
+};
+
+int __init
+ifxmips_gpio_init (void)
+{
+ int retval = 0;
+
+ sema_init (&port_sem, 1);
+
+ ifxmips_gpio_major = register_chrdev(0, "ifxmips_gpio", &port_fops);
+ if (!ifxmips_gpio_major)
+ {
+ printk("ifxmips-port: Error! Could not register port device. #%d\n", ifxmips_gpio_major);
+ retval = -EINVAL;
+ goto out;
+ }
+
+ create_proc_read_entry("ifxmips_gpio", 0, NULL,
+ ifxmips_port_read_procmem, NULL);
+
+ printk("registered ifxmips gpio driver\n");
+
+out:
+ return retval;
+}
+
+void __exit
+ifxmips_gpio_exit (void)
+{
+ unregister_chrdev(ifxmips_gpio_major, "ifxmips_gpio");
+ remove_proc_entry("ifxmips_gpio", NULL);
+}
+
+module_init(ifxmips_gpio_init);
+module_exit(ifxmips_gpio_exit);
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) 2006 infineon
+ * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <asm/uaccess.h>
+#include <asm/unistd.h>
+#include <linux/errno.h>
+#include <asm/ifxmips/ifxmips.h>
+#include <asm/ifxmips/ifxmips_gpio.h>
+#include <asm/ifxmips/ifxmips_pmu.h>
+
+#define IFXMIPS_LED_CLK_EDGE IFXMIPS_LED_FALLING
+//#define IFXMIPS_LED_CLK_EDGE IFXMIPS_LED_RISING
+
+#define IFXMIPS_LED_SPEED IFXMIPS_LED_8HZ
+
+#define IFXMIPS_LED_GPIO_PORT 0
+
+static int ifxmips_led_major;
+
+void
+ifxmips_led_set (unsigned int led)
+{
+ led &= 0xffffff;
+ writel(readl(IFXMIPS_LED_CPU0) | led, IFXMIPS_LED_CPU0);
+}
+EXPORT_SYMBOL(ifxmips_led_set);
+
+void
+ifxmips_led_clear (unsigned int led)
+{
+ led = ~(led & 0xffffff);
+ writel(readl(IFXMIPS_LED_CPU0) & led, IFXMIPS_LED_CPU0);
+}
+EXPORT_SYMBOL(ifxmips_led_clear);
+
+void
+ifxmips_led_blink_set (unsigned int led)
+{
+ led &= 0xffffff;
+ writel(readl(IFXMIPS_LED_CON0) | led, IFXMIPS_LED_CON0);
+}
+EXPORT_SYMBOL(ifxmips_led_blink_set);
+
+void
+ifxmips_led_blink_clear (unsigned int led)
+{
+ led = ~(led & 0xffffff);
+ writel(readl(IFXMIPS_LED_CON0) & led, IFXMIPS_LED_CON0);
+}
+EXPORT_SYMBOL(ifxmips_led_blink_clear);
+
+void
+ifxmips_led_setup_gpio (void)
+{
+ int i = 0;
+
+ /* we need to setup pins SH,D,ST (4,5,6) */
+ for (i = 4; i < 7; i++)
+ {
+ ifxmips_port_set_altsel0(IFXMIPS_LED_GPIO_PORT, i);
+ ifxmips_port_clear_altsel1(IFXMIPS_LED_GPIO_PORT, i);
+ ifxmips_port_set_dir_out(IFXMIPS_LED_GPIO_PORT, i);
+ ifxmips_port_set_open_drain(IFXMIPS_LED_GPIO_PORT, i);
+ }
+}
+
+static int
+led_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ int ret = -EINVAL;
+
+ switch ( cmd )
+ {
+ }
+
+ return ret;
+}
+
+static int
+led_open (struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+static int
+led_release (struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+static struct file_operations ifxmips_led_fops = {
+ .owner = THIS_MODULE,
+ .ioctl = led_ioctl,
+ .open = led_open,
+ .release = led_release
+};
+
+
+/*
+Map for LED on reference board
+ WLAN_READ LED11 OUT1 15
+ WARNING LED12 OUT2 14
+ FXS1_LINK LED13 OUT3 13
+ FXS2_LINK LED14 OUT4 12
+ FXO_ACT LED15 OUT5 11
+ USB_LINK LED16 OUT6 10
+ ADSL2_LINK LED19 OUT7 9
+ BT_LINK LED17 OUT8 8
+ SD_LINK LED20 OUT9 7
+ ADSL2_TRAFFIC LED31 OUT16 0
+Map for hardware relay on reference board
+ USB Power On OUT11 5
+ RELAY OUT12 4
+*/
+
+
+int __init
+ifxmips_led_init (void)
+{
+ int ret = 0;
+
+ ifxmips_led_setup_gpio();
+
+ writel(0, IFXMIPS_LED_AR);
+ writel(0, IFXMIPS_LED_CPU0);
+ writel(0, IFXMIPS_LED_CPU1);
+ writel(LED_CON0_SWU, IFXMIPS_LED_CON0);
+ writel(0, IFXMIPS_LED_CON1);
+
+ /* setup the clock edge that the shift register is triggered on */
+ writel(readl(IFXMIPS_LED_CON0) & ~IFXMIPS_LED_EDGE_MASK, IFXMIPS_LED_CON0);
+ writel(readl(IFXMIPS_LED_CON0) | IFXMIPS_LED_CLK_EDGE, IFXMIPS_LED_CON0);
+
+ /* per default leds 15-0 are set */
+ writel(IFXMIPS_LED_GROUP1 | IFXMIPS_LED_GROUP0, IFXMIPS_LED_CON1);
+
+ /* leds are update periodically by the FPID */
+ writel(readl(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_UPD_MASK, IFXMIPS_LED_CON1);
+ writel(readl(IFXMIPS_LED_CON1) | IFXMIPS_LED_UPD_SRC_FPI, IFXMIPS_LED_CON1);
+
+ /* set led update speed */
+ writel(readl(IFXMIPS_LED_CON1) & ~IFXMIPS_LED_MASK, IFXMIPS_LED_CON1);
+ writel(readl(IFXMIPS_LED_CON1) | IFXMIPS_LED_SPEED, IFXMIPS_LED_CON1);
+
+ /* adsl 0 and 1 leds are updated by the arc */
+ writel(readl(IFXMIPS_LED_CON0) | IFXMIPS_LED_ADSL_SRC, IFXMIPS_LED_CON0);
+
+ /* per default, the leds are turned on */
+ ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_LED);
+
+ ifxmips_led_major = register_chrdev(0, "ifxmips_led", &ifxmips_led_fops);
+
+ if (!ifxmips_led_major)
+ {
+ printk("ifxmips_led: Error! Could not register device. %d\n", ifxmips_led_major);
+ ret = -EINVAL;
+
+ goto out;
+ }
+
+ printk(KERN_INFO "ifxmips_led : device registered on major %d\n", ifxmips_led_major);
+
+out:
+ return ret;
+}
+
+void __exit
+ifxmips_led_exit (void)
+{
+ unregister_chrdev(ifxmips_led_major, "ifxmips_led");
+}
+
+module_init(ifxmips_led_init);
+module_exit(ifxmips_led_exit);
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) 2006 infineon
+ * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
+ *
+ */
+
+// ### TO DO: general issues:
+// - power management
+// - interrupt handling (direct/indirect)
+// - pin/mux-handling (just overall concept due to project dependency)
+// - multiple instances capability
+// - slave functionality
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fs.h>
+#include <linux/proc_fs.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/mm.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+
+#include <asm/ifxmips/ifxmips.h>
+#include <asm/ifxmips/ifxmips_irq.h>
+#include <asm/ifxmips/ifx_ssc_defines.h>
+#include <asm/ifxmips/ifx_ssc.h>
+
+#ifdef SSC_FRAME_INT_ENABLE
+#undef SSC_FRAME_INT_ENABLE
+#endif
+
+#define not_yet
+
+#define SPI_VINETIC
+
+
+
+/* allow the user to set the major device number */
+static int maj = 0;
+
+/*
+ * This is the per-channel data structure containing pointers, flags
+ * and variables for the port. This driver supports a maximum of PORT_CNT.
+ * isp is allocated in ifx_ssc_init() based on the chip version.
+ */
+static struct ifx_ssc_port *isp;
+
+/* prototypes for fops */
+static ssize_t ifx_ssc_read (struct file *, char *, size_t, loff_t *);
+static ssize_t ifx_ssc_write (struct file *, const char *, size_t, loff_t *);
+//static unsigned int ifx_ssc_poll(struct file *, struct poll_table_struct *);
+int ifx_ssc_ioctl (struct inode *, struct file *, unsigned int,
+ unsigned long);
+int ifx_ssc_open (struct inode *, struct file *);
+int ifx_ssc_close (struct inode *, struct file *);
+
+/* other forward declarations */
+static unsigned int ifx_ssc_get_kernel_clk (struct ifx_ssc_port *info);
+static void tx_int (struct ifx_ssc_port *);
+static int ifx_ssc1_read_proc (char *, char **, off_t, int, int *, void *);
+
+extern unsigned int ifxmips_get_fpi_hz (void);
+extern void mask_and_ack_ifxmips_irq (unsigned int irq_nr);
+
+static struct file_operations ifx_ssc_fops = {
+ .owner = THIS_MODULE,
+ .read = ifx_ssc_read,
+ .write = ifx_ssc_write,
+ .ioctl = ifx_ssc_ioctl,
+ .open = ifx_ssc_open,
+ .release = ifx_ssc_close,
+};
+
+static inline unsigned int
+ifx_ssc_get_kernel_clk (struct ifx_ssc_port *info)
+{
+ unsigned int rmc;
+
+ rmc = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_CLC) & IFX_CLC_RUN_DIVIDER_MASK) >> IFX_CLC_RUN_DIVIDER_OFFSET;
+ if (rmc == 0)
+ {
+ printk ("ifx_ssc_get_kernel_clk rmc==0 \n");
+ return 0;
+ }
+ return ifxmips_get_fpi_hz () / rmc;
+}
+
+#ifndef not_yet
+#ifdef IFX_SSC_INT_USE_BH
+/*
+ * This routine is used by the interrupt handler to schedule
+ * processing in the software interrupt portion of the driver
+ * (also known as the "bottom half"). This can be called any
+ * number of times for any channel without harm.
+ */
+static inline void
+ifx_ssc_sched_event (struct ifx_ssc_port *info, int event)
+{
+ info->event |= 1 << event; /* remember what kind of event and who */
+ queue_task (&info->tqueue, &tq_cyclades); /* it belongs to */
+ mark_bh (CYCLADES_BH); /* then trigger event */
+}
+
+static void
+do_softint (void *private_)
+{
+ struct ifx_ssc_port *info = (struct ifx_ssc_port *) private_;
+
+ if (test_and_clear_bit (Cy_EVENT_HANGUP, &info->event))
+ {
+ wake_up_interruptible (&info->open_wait);
+ info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE);
+ }
+
+ if (test_and_clear_bit (Cy_EVENT_OPEN_WAKEUP, &info->event))
+ wake_up_interruptible (&info->open_wait);
+
+ if (test_and_clear_bit (Cy_EVENT_DELTA_WAKEUP, &info->event))
+ wake_up_interruptible (&info->delta_msr_wait);
+
+ if (test_and_clear_bit (Cy_EVENT_WRITE_WAKEUP, &info->event))
+ wake_up_interruptible (&tty->write_wait);
+#ifdef Z_WAKE
+ if (test_and_clear_bit (Cy_EVENT_SHUTDOWN_WAKEUP, &info->event))
+ wake_up_interruptible (&info->shutdown_wait);
+#endif
+}
+#endif
+#endif
+
+inline static void
+rx_int (struct ifx_ssc_port *info)
+{
+ int fifo_fill_lev, bytes_in_buf, i;
+ unsigned long tmp_val;
+ unsigned long *tmp_ptr;
+ unsigned int rx_valid_cnt;
+ /* number of words waiting in the RX FIFO */
+ fifo_fill_lev = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_FSTAT) & IFX_SSC_FSTAT_RECEIVED_WORDS_MASK) >> IFX_SSC_FSTAT_RECEIVED_WORDS_OFFSET;
+ // Note: There are always 32 bits in a fifo-entry except for the last
+ // word of a contigous transfer block and except for not in rx-only
+ // mode and CON.ENBV set. But for this case it should be a convention
+ // in software which helps:
+ // In tx or rx/tx mode all transfers from the buffer to the FIFO are
+ // 32-bit wide, except for the last three bytes, which could be a
+ // combination of 16- and 8-bit access.
+ // => The whole block is received as 32-bit words as a contigous stream,
+ // even if there was a gap in tx which has the fifo run out of data!
+ // Just the last fifo entry *may* be partially filled (0, 1, 2 or 3 bytes)!
+
+ /* free space in the RX buffer */
+ bytes_in_buf = info->rxbuf_end - info->rxbuf_ptr;
+ // transfer with 32 bits per entry
+ while ((bytes_in_buf >= 4) && (fifo_fill_lev > 0)) {
+ tmp_ptr = (unsigned long *) info->rxbuf_ptr;
+ *tmp_ptr = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RB);
+ info->rxbuf_ptr += 4;
+ info->stats.rxBytes += 4;
+ fifo_fill_lev--;
+ bytes_in_buf -= 4;
+ }
+
+ // now do the rest as mentioned in STATE.RXBV
+ while ((bytes_in_buf > 0) && (fifo_fill_lev > 0)) {
+ rx_valid_cnt = (READ_PERIPHERAL_REGISTER(info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_RX_BYTE_VALID_MASK) >> IFX_SSC_STATE_RX_BYTE_VALID_OFFSET;
+ if (rx_valid_cnt == 0)
+ break;
+
+ if (rx_valid_cnt > bytes_in_buf)
+ rx_valid_cnt = bytes_in_buf;
+
+ tmp_val = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RB);
+
+ for (i = 0; i < rx_valid_cnt; i++)
+ {
+ *info->rxbuf_ptr = (tmp_val >> (8 * (rx_valid_cnt - i - 1))) & 0xff;
+ bytes_in_buf--;
+ info->rxbuf_ptr++;
+ }
+ info->stats.rxBytes += rx_valid_cnt;
+ }
+
+ // check if transfer is complete
+ if (info->rxbuf_ptr >= info->rxbuf_end)
+ {
+ disable_irq(info->rxirq);
+ wake_up_interruptible (&info->rwait);
+ } else if ((info->opts.modeRxTx == IFX_SSC_MODE_RX) && (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RXCNT) == 0))
+ {
+ if (info->rxbuf_end - info->rxbuf_ptr < IFX_SSC_RXREQ_BLOCK_SIZE)
+ WRITE_PERIPHERAL_REGISTER ((info->rxbuf_end - info->rxbuf_ptr) << IFX_SSC_RXREQ_RXCOUNT_OFFSET, info->mapbase + IFX_SSC_RXREQ);
+ else
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_RXREQ_BLOCK_SIZE << IFX_SSC_RXREQ_RXCOUNT_OFFSET, info->mapbase + IFX_SSC_RXREQ);
+ }
+}
+
+inline static void
+tx_int (struct ifx_ssc_port *info)
+{
+
+ int fifo_space, fill, i;
+ fifo_space = ((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_ID) & IFX_SSC_PERID_TXFS_MASK) >> IFX_SSC_PERID_TXFS_OFFSET)
+ - ((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_FSTAT) & IFX_SSC_FSTAT_TRANSMIT_WORDS_MASK) >> IFX_SSC_FSTAT_TRANSMIT_WORDS_OFFSET);
+
+ if (fifo_space == 0)
+ return;
+
+ fill = info->txbuf_end - info->txbuf_ptr;
+
+ if (fill > fifo_space * 4)
+ fill = fifo_space * 4;
+
+ for (i = 0; i < fill / 4; i++)
+ {
+ // at first 32 bit access
+ WRITE_PERIPHERAL_REGISTER (*(UINT32 *) info->txbuf_ptr, info->mapbase + IFX_SSC_TB);
+ info->txbuf_ptr += 4;
+ }
+
+ fifo_space -= fill / 4;
+ info->stats.txBytes += fill & ~0x3;
+ fill &= 0x3;
+ if ((fifo_space > 0) & (fill > 1))
+ {
+ // trailing 16 bit access
+ WRITE_PERIPHERAL_REGISTER_16 (*(UINT16 *) info->txbuf_ptr, info->mapbase + IFX_SSC_TB);
+ info->txbuf_ptr += 2;
+ info->stats.txBytes += 2;
+ fifo_space--;
+ fill -= 2;
+ }
+
+ if ((fifo_space > 0) & (fill > 0))
+ {
+ // trailing 8 bit access
+ WRITE_PERIPHERAL_REGISTER_8 (*(UINT8 *) info->txbuf_ptr, info->mapbase + IFX_SSC_TB);
+ info->txbuf_ptr++;
+ info->stats.txBytes++;
+ }
+
+ // check if transmission complete
+ if (info->txbuf_ptr >= info->txbuf_end)
+ {
+ disable_irq(info->txirq);
+ kfree (info->txbuf);
+ info->txbuf = NULL;
+ }
+
+}
+
+irqreturn_t
+ifx_ssc_rx_int (int irq, void *dev_id)
+{
+ struct ifx_ssc_port *info = (struct ifx_ssc_port *) dev_id;
+ rx_int (info);
+
+ return IRQ_HANDLED;
+}
+
+irqreturn_t
+ifx_ssc_tx_int (int irq, void *dev_id)
+{
+ struct ifx_ssc_port *info = (struct ifx_ssc_port *) dev_id;
+ tx_int (info);
+
+ return IRQ_HANDLED;
+}
+
+irqreturn_t
+ifx_ssc_err_int (int irq, void *dev_id)
+{
+ struct ifx_ssc_port *info = (struct ifx_ssc_port *) dev_id;
+ unsigned int state;
+ unsigned int write_back = 0;
+ unsigned long flags;
+
+ local_irq_save (flags);
+ state = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE);
+
+ if ((state & IFX_SSC_STATE_RX_UFL) != 0) {
+ info->stats.rxUnErr++;
+ write_back |= IFX_SSC_WHBSTATE_CLR_RX_UFL_ERROR;
+ }
+
+ if ((state & IFX_SSC_STATE_RX_OFL) != 0) {
+ info->stats.rxOvErr++;
+ write_back |= IFX_SSC_WHBSTATE_CLR_RX_OFL_ERROR;
+ }
+
+ if ((state & IFX_SSC_STATE_TX_OFL) != 0) {
+ info->stats.txOvErr++;
+ write_back |= IFX_SSC_WHBSTATE_CLR_TX_OFL_ERROR;
+ }
+
+ if ((state & IFX_SSC_STATE_TX_UFL) != 0) {
+ info->stats.txUnErr++;
+ write_back |= IFX_SSC_WHBSTATE_CLR_TX_UFL_ERROR;
+ }
+
+ if ((state & IFX_SSC_STATE_MODE_ERR) != 0) {
+ info->stats.modeErr++;
+ write_back |= IFX_SSC_WHBSTATE_CLR_MODE_ERROR;
+ }
+
+ if (write_back)
+ WRITE_PERIPHERAL_REGISTER (write_back, info->mapbase + IFX_SSC_WHBSTATE);
+
+ local_irq_restore (flags);
+
+ return IRQ_HANDLED;
+}
+
+static void
+ifx_ssc_abort (struct ifx_ssc_port *info)
+{
+ unsigned long flags;
+ bool enabled;
+
+ local_irq_save (flags);
+
+ disable_irq(info->rxirq);
+ disable_irq(info->txirq);
+ disable_irq(info->errirq);
+
+ local_irq_restore (flags);
+
+ // disable SSC (also aborts a receive request!)
+ // ### TO DO: Perhaps it's better to abort after the receiption of a
+ // complete word. The disable cuts the transmission immediatly and
+ // releases the chip selects. This could result in unpredictable
+ // behavior of connected external devices!
+ enabled = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_IS_ENABLED) != 0;
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
+
+ // flush fifos
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_XFCON_FIFO_FLUSH, info->mapbase + IFX_SSC_TXFCON);
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_XFCON_FIFO_FLUSH, info->mapbase + IFX_SSC_RXFCON);
+
+ // free txbuf
+ if (info->txbuf != NULL)
+ {
+ kfree (info->txbuf);
+ info->txbuf = NULL;
+ }
+
+ // wakeup read process
+ if (info->rxbuf != NULL)
+ wake_up_interruptible (&info->rwait);
+
+ // clear pending int's
+ mask_and_ack_ifxmips_irq(info->rxirq);
+ mask_and_ack_ifxmips_irq(info->txirq);
+ mask_and_ack_ifxmips_irq(info->errirq);
+
+ // clear error flags
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ALL_ERROR, info->mapbase + IFX_SSC_WHBSTATE);
+
+ if (enabled)
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
+
+}
+
+/*
+ * This routine is called whenever a port is opened. It enforces
+ * exclusive opening of a port and enables interrupts, etc.
+ */
+int
+ifx_ssc_open (struct inode *inode, struct file *filp)
+{
+ struct ifx_ssc_port *info;
+ int line;
+ int from_kernel = 0;
+
+ if ((inode == (struct inode *) 0) || (inode == (struct inode *) 1)) {
+ from_kernel = 1;
+ line = (int) inode;
+ } else {
+ line = MINOR (filp->f_dentry->d_inode->i_rdev);
+ filp->f_op = &ifx_ssc_fops;
+ }
+
+ /* don't open more minor devices than we can support */
+ if (line < 0 || line >= PORT_CNT)
+ return -ENXIO;
+
+ info = &isp[line];
+
+ /* exclusive open */
+ if (info->port_is_open != 0)
+ return -EBUSY;
+ info->port_is_open++;
+
+ disable_irq(info->rxirq);
+ disable_irq(info->txirq);
+ disable_irq(info->errirq);
+
+ /* Flush and enable TX/RX FIFO */
+ WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_TXFIFO_FL << IFX_SSC_XFCON_ITL_OFFSET) | IFX_SSC_XFCON_FIFO_FLUSH | IFX_SSC_XFCON_FIFO_ENABLE, info->mapbase + IFX_SSC_TXFCON);
+ WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_RXFIFO_FL << IFX_SSC_XFCON_ITL_OFFSET) | IFX_SSC_XFCON_FIFO_FLUSH | IFX_SSC_XFCON_FIFO_ENABLE, info->mapbase + IFX_SSC_RXFCON);
+
+ /* logically flush the software FIFOs */
+ info->rxbuf_ptr = 0;
+ info->txbuf_ptr = 0;
+
+ /* clear all error bits */
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ALL_ERROR, info->mapbase + IFX_SSC_WHBSTATE);
+
+ // clear pending interrupts
+ mask_and_ack_ifxmips_irq(info->rxirq);
+ mask_and_ack_ifxmips_irq(info->txirq);
+ mask_and_ack_ifxmips_irq(info->errirq);
+
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
+
+ return 0;
+}
+EXPORT_SYMBOL(ifx_ssc_open);
+
+int
+ifx_ssc_close (struct inode *inode, struct file *filp)
+{
+ struct ifx_ssc_port *info;
+ int idx;
+
+ if ((inode == (struct inode *) 0) || (inode == (struct inode *) 1))
+ idx = (int) inode;
+ else
+ idx = MINOR (filp->f_dentry->d_inode->i_rdev);
+
+ if (idx < 0 || idx >= PORT_CNT)
+ return -ENXIO;
+
+ info = &isp[idx];
+ if (!info)
+ return -ENXIO;
+
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
+
+ ifx_ssc_abort(info);
+
+ info->port_is_open--;
+
+ return 0;
+}
+EXPORT_SYMBOL(ifx_ssc_close);
+
+static ssize_t
+ifx_ssc_read_helper_poll (struct ifx_ssc_port *info, char *buf, size_t len, int from_kernel)
+{
+ ssize_t ret_val;
+ unsigned long flags;
+
+ if (info->opts.modeRxTx == IFX_SSC_MODE_TX)
+ return -EFAULT;
+ local_irq_save (flags);
+ info->rxbuf_ptr = info->rxbuf;
+ info->rxbuf_end = info->rxbuf + len;
+ local_irq_restore (flags);
+ /* Vinetic driver always works in IFX_SSC_MODE_RXTX */
+ /* TXRX in poll mode */
+ while (info->rxbuf_ptr < info->rxbuf_end)
+ {
+ if (info->txbuf_ptr < info->txbuf_end)
+ tx_int (info);
+
+ rx_int (info);
+ };
+
+ ret_val = info->rxbuf_ptr - info->rxbuf;
+
+ return ret_val;
+}
+
+static ssize_t
+ifx_ssc_read_helper (struct ifx_ssc_port *info, char *buf, size_t len, int from_kernel)
+{
+ ssize_t ret_val;
+ unsigned long flags;
+ DECLARE_WAITQUEUE (wait, current);
+
+ if (info->opts.modeRxTx == IFX_SSC_MODE_TX)
+ return -EFAULT;
+
+ local_irq_save (flags);
+ info->rxbuf_ptr = info->rxbuf;
+ info->rxbuf_end = info->rxbuf + len;
+
+ if (info->opts.modeRxTx == IFX_SSC_MODE_RXTX)
+ {
+ if ((info->txbuf == NULL) || (info->txbuf != info->txbuf_ptr) || (info->txbuf_end != len + info->txbuf))
+ {
+ local_irq_restore (flags);
+ printk ("IFX SSC - %s: write must be called before calling " "read in combined RX/TX!\n", __func__);
+ return -EFAULT;
+ }
+
+ local_irq_restore(flags);
+ tx_int (info);
+
+ if (info->txbuf_ptr < info->txbuf_end)
+ enable_irq(info->txirq);
+
+ enable_irq(info->rxirq);
+ } else {
+ local_irq_restore(flags);
+ if (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RXCNT) & IFX_SSC_RXCNT_TODO_MASK)
+ return -EBUSY;
+ enable_irq(info->rxirq);
+ if (len < IFX_SSC_RXREQ_BLOCK_SIZE)
+ WRITE_PERIPHERAL_REGISTER (len << IFX_SSC_RXREQ_RXCOUNT_OFFSET, info->mapbase + IFX_SSC_RXREQ);
+ else
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_RXREQ_BLOCK_SIZE << IFX_SSC_RXREQ_RXCOUNT_OFFSET, info->mapbase + IFX_SSC_RXREQ);
+ }
+
+ __add_wait_queue (&info->rwait, &wait);
+ set_current_state (TASK_INTERRUPTIBLE);
+
+ do {
+ local_irq_save (flags);
+ if (info->rxbuf_ptr >= info->rxbuf_end)
+ break;
+
+ local_irq_restore (flags);
+
+ if (signal_pending (current))
+ {
+ ret_val = -ERESTARTSYS;
+ goto out;
+ }
+ schedule();
+ } while (1);
+
+ ret_val = info->rxbuf_ptr - info->rxbuf;
+ local_irq_restore (flags);
+
+out:
+ current->state = TASK_RUNNING;
+ __remove_wait_queue (&info->rwait, &wait);
+
+ return (ret_val);
+}
+
+static ssize_t
+ifx_ssc_write_helper (struct ifx_ssc_port *info, const char *buf,
+ size_t len, int from_kernel)
+{
+ if (info->opts.modeRxTx == IFX_SSC_MODE_RX)
+ return -EFAULT;
+
+ info->txbuf_ptr = info->txbuf;
+ info->txbuf_end = len + info->txbuf;
+ if (info->opts.modeRxTx == IFX_SSC_MODE_TX)
+ {
+ tx_int (info);
+ if (info->txbuf_ptr < info->txbuf_end)
+ {
+ enable_irq(info->txirq);
+ }
+ }
+
+ return len;
+}
+
+ssize_t
+ifx_ssc_kread (int port, char *kbuf, size_t len)
+{
+ struct ifx_ssc_port *info;
+ ssize_t ret_val;
+
+ if (port < 0 || port >= PORT_CNT)
+ return -ENXIO;
+
+ if (len == 0)
+ return 0;
+
+ info = &isp[port];
+
+ if (info->rxbuf != NULL)
+ {
+ printk ("SSC device busy\n");
+ return -EBUSY;
+ }
+
+ info->rxbuf = kbuf;
+ if (info->rxbuf == NULL)
+ {
+ printk ("SSC device error\n");
+ return -EINVAL;
+ }
+
+ ret_val = ifx_ssc_read_helper_poll (info, kbuf, len, 1);
+ info->rxbuf = NULL;
+
+ disable_irq(info->rxirq);
+
+ return ret_val;
+}
+EXPORT_SYMBOL(ifx_ssc_kread);
+
+ssize_t
+ifx_ssc_kwrite (int port, const char *kbuf, size_t len)
+{
+ struct ifx_ssc_port *info;
+ ssize_t ret_val;
+
+ if (port < 0 || port >= PORT_CNT)
+ return -ENXIO;
+
+ if (len == 0)
+ return 0;
+
+ info = &isp[port];
+
+ // check if transmission in progress
+ if (info->txbuf != NULL)
+ return -EBUSY;
+
+ info->txbuf = (char *) kbuf;
+
+ ret_val = ifx_ssc_write_helper (info, info->txbuf, len, 1);
+
+ if (ret_val < 0)
+ info->txbuf = NULL;
+
+ return ret_val;
+}
+EXPORT_SYMBOL(ifx_ssc_kwrite);
+
+static ssize_t
+ifx_ssc_read (struct file *filp, char *ubuf, size_t len, loff_t * off)
+{
+ ssize_t ret_val;
+ int idx;
+ struct ifx_ssc_port *info;
+
+ idx = MINOR (filp->f_dentry->d_inode->i_rdev);
+ info = &isp[idx];
+
+ if (info->rxbuf != NULL)
+ return -EBUSY;
+
+ info->rxbuf = kmalloc (len + 3, GFP_KERNEL);
+ if (info->rxbuf == NULL)
+ return -ENOMEM;
+
+ ret_val = ifx_ssc_read_helper (info, info->rxbuf, len, 0);
+ if (copy_to_user ((void *) ubuf, info->rxbuf, ret_val) != 0)
+ ret_val = -EFAULT;
+
+ disable_irq(info->rxirq);
+
+ kfree (info->rxbuf);
+ info->rxbuf = NULL;
+
+ return (ret_val);
+}
+
+static ssize_t
+ifx_ssc_write (struct file *filp, const char *ubuf, size_t len, loff_t * off)
+{
+ int idx;
+ struct ifx_ssc_port *info;
+ int ret_val;
+
+ if (len == 0)
+ return (0);
+
+ idx = MINOR (filp->f_dentry->d_inode->i_rdev);
+ info = &isp[idx];
+
+ if (info->txbuf != NULL)
+ return -EBUSY;
+
+ info->txbuf = kmalloc (len + 3, GFP_KERNEL);
+ if (info->txbuf == NULL)
+ return -ENOMEM;
+
+ ret_val = copy_from_user (info->txbuf, ubuf, len);
+ if (ret_val == 0)
+ ret_val = ifx_ssc_write_helper (info, info->txbuf, len, 0);
+ else
+ ret_val = -EFAULT;
+
+ if (ret_val < 0)
+ {
+ kfree (info->txbuf);
+ info->txbuf = NULL;
+ }
+
+ return (ret_val);
+}
+
+static struct ifx_ssc_frm_status *
+ifx_ssc_frm_status_get (struct ifx_ssc_port *info)
+{
+ unsigned long tmp;
+
+ tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_SFSTAT);
+ info->frm_status.DataBusy = (tmp & IFX_SSC_SFSTAT_IN_DATA) > 0;
+ info->frm_status.PauseBusy = (tmp & IFX_SSC_SFSTAT_IN_PAUSE) > 0;
+ info->frm_status.DataCount = (tmp & IFX_SSC_SFSTAT_DATA_COUNT_MASK) >> IFX_SSC_SFSTAT_DATA_COUNT_OFFSET;
+ info->frm_status.PauseCount = (tmp & IFX_SSC_SFSTAT_PAUSE_COUNT_MASK) >> IFX_SSC_SFSTAT_PAUSE_COUNT_OFFSET;
+ tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_SFCON);
+ info->frm_status.EnIntAfterData = (tmp & IFX_SSC_SFCON_FIR_ENABLE_BEFORE_PAUSE) > 0;
+ info->frm_status.EnIntAfterPause = (tmp & IFX_SSC_SFCON_FIR_ENABLE_AFTER_PAUSE) > 0;
+
+ return &info->frm_status;
+}
+
+
+static struct ifx_ssc_frm_opts *
+ifx_ssc_frm_control_get (struct ifx_ssc_port *info)
+{
+ unsigned long tmp;
+
+ tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_SFCON);
+ info->frm_opts.FrameEnable = (tmp & IFX_SSC_SFCON_SF_ENABLE) > 0;
+ info->frm_opts.DataLength = (tmp & IFX_SSC_SFCON_DATA_LENGTH_MASK) >> IFX_SSC_SFCON_DATA_LENGTH_OFFSET;
+ info->frm_opts.PauseLength = (tmp & IFX_SSC_SFCON_PAUSE_LENGTH_MASK) >> IFX_SSC_SFCON_PAUSE_LENGTH_OFFSET;
+ info->frm_opts.IdleData = (tmp & IFX_SSC_SFCON_PAUSE_DATA_MASK) >> IFX_SSC_SFCON_PAUSE_DATA_OFFSET;
+ info->frm_opts.IdleClock = (tmp & IFX_SSC_SFCON_PAUSE_CLOCK_MASK) >> IFX_SSC_SFCON_PAUSE_CLOCK_OFFSET;
+ info->frm_opts.StopAfterPause = (tmp & IFX_SSC_SFCON_STOP_AFTER_PAUSE) > 0;
+
+ return &info->frm_opts;
+}
+
+static int
+ifx_ssc_frm_control_set (struct ifx_ssc_port *info)
+{
+ unsigned long tmp;
+
+ // check parameters
+ if ((info->frm_opts.DataLength > IFX_SSC_SFCON_DATA_LENGTH_MAX)
+ || (info->frm_opts.DataLength < 1)
+ || (info->frm_opts.PauseLength > IFX_SSC_SFCON_PAUSE_LENGTH_MAX)
+ || (info->frm_opts.PauseLength < 1)
+ || (info->frm_opts.IdleData & ~(IFX_SSC_SFCON_PAUSE_DATA_MASK >> IFX_SSC_SFCON_PAUSE_DATA_OFFSET))
+ || (info->frm_opts.IdleClock & ~(IFX_SSC_SFCON_PAUSE_CLOCK_MASK >> IFX_SSC_SFCON_PAUSE_CLOCK_OFFSET)))
+ return -EINVAL;
+
+ // read interrupt bits (they're not changed here)
+ tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_SFCON) &
+ (IFX_SSC_SFCON_FIR_ENABLE_BEFORE_PAUSE | IFX_SSC_SFCON_FIR_ENABLE_AFTER_PAUSE);
+
+ // set all values with respect to it's bit position (for data and pause
+ // length set N-1)
+ tmp = (info->frm_opts.DataLength - 1) << IFX_SSC_SFCON_DATA_LENGTH_OFFSET;
+ tmp |= (info->frm_opts.PauseLength - 1) << IFX_SSC_SFCON_PAUSE_LENGTH_OFFSET;
+ tmp |= info->frm_opts.IdleData << IFX_SSC_SFCON_PAUSE_DATA_OFFSET;
+ tmp |= info->frm_opts.IdleClock << IFX_SSC_SFCON_PAUSE_CLOCK_OFFSET;
+ tmp |= info->frm_opts.FrameEnable * IFX_SSC_SFCON_SF_ENABLE;
+ tmp |= info->frm_opts.StopAfterPause * IFX_SSC_SFCON_STOP_AFTER_PAUSE;
+
+ WRITE_PERIPHERAL_REGISTER(tmp, info->mapbase + IFX_SSC_SFCON);
+
+ return 0;
+}
+
+static int
+ifx_ssc_rxtx_mode_set (struct ifx_ssc_port *info, unsigned int val)
+{
+ unsigned long tmp;
+
+ if (!(info) || (val & ~(IFX_SSC_MODE_MASK)))
+ return -EINVAL;
+
+ if ((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_BUSY)
+ || (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_RXCNT) & IFX_SSC_RXCNT_TODO_MASK))
+ return -EBUSY;
+
+ tmp = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_CON) & ~(IFX_SSC_CON_RX_OFF | IFX_SSC_CON_TX_OFF)) | (val);
+ WRITE_PERIPHERAL_REGISTER (tmp, info->mapbase + IFX_SSC_CON);
+ info->opts.modeRxTx = val;
+
+ return 0;
+}
+
+static int
+ifx_ssc_sethwopts (struct ifx_ssc_port *info)
+{
+ unsigned long flags, bits;
+ struct ifx_ssc_hwopts *opts = &info->opts;
+
+ if ((opts->dataWidth < IFX_SSC_MIN_DATA_WIDTH)
+ || (opts->dataWidth > IFX_SSC_MAX_DATA_WIDTH))
+ return -EINVAL;
+
+ bits = (opts->dataWidth - 1) << IFX_SSC_CON_DATA_WIDTH_OFFSET;
+ bits |= IFX_SSC_CON_ENABLE_BYTE_VALID;
+
+ if (opts->rxOvErrDetect)
+ bits |= IFX_SSC_CON_RX_OFL_CHECK;
+ if (opts->rxUndErrDetect)
+ bits |= IFX_SSC_CON_RX_UFL_CHECK;
+ if (opts->txOvErrDetect)
+ bits |= IFX_SSC_CON_TX_OFL_CHECK;
+ if (opts->txUndErrDetect)
+ bits |= IFX_SSC_CON_TX_UFL_CHECK;
+ if (opts->loopBack)
+ bits |= IFX_SSC_CON_LOOPBACK_MODE;
+ if (opts->echoMode)
+ bits |= IFX_SSC_CON_ECHO_MODE_ON;
+ if (opts->headingControl)
+ bits |= IFX_SSC_CON_MSB_FIRST;
+ if (opts->clockPhase)
+ bits |= IFX_SSC_CON_LATCH_THEN_SHIFT;
+ if (opts->clockPolarity)
+ bits |= IFX_SSC_CON_CLOCK_FALL;
+
+ switch (opts->modeRxTx)
+ {
+ case IFX_SSC_MODE_TX:
+ bits |= IFX_SSC_CON_RX_OFF;
+ break;
+ case IFX_SSC_MODE_RX:
+ bits |= IFX_SSC_CON_TX_OFF;
+ break;
+ }
+
+ local_irq_save (flags);
+
+ WRITE_PERIPHERAL_REGISTER (bits, info->mapbase + IFX_SSC_CON);
+ WRITE_PERIPHERAL_REGISTER ((info->opts.gpoCs << IFX_SSC_GPOCON_ISCSB0_POS) |
+ (info->opts.gpoInv << IFX_SSC_GPOCON_INVOUT0_POS), info->mapbase + IFX_SSC_GPOCON);
+
+ WRITE_PERIPHERAL_REGISTER (info->opts.gpoCs << IFX_SSC_WHBGPOSTAT_SETOUT0_POS, info->mapbase + IFX_SSC_WHBGPOSTAT);
+
+ //master mode
+ if (opts->masterSelect)
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_MASTER_SELECT, info->mapbase + IFX_SSC_WHBSTATE);
+ else
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_MASTER_SELECT, info->mapbase + IFX_SSC_WHBSTATE);
+
+ // init serial framing
+ WRITE_PERIPHERAL_REGISTER (0, info->mapbase + IFX_SSC_SFCON);
+ /* set up the port pins */
+ //check for general requirements to switch (external) pad/pin characteristics
+ /* TODO: P0.9 SPI_CS4, P0.10 SPI_CS5, P 0.11 SPI_CS6, because of ASC0 */
+ /* p0.15 SPI_CS1(EEPROM), P0.13 SPI_CS3, */
+ /* Set p0.15 to alternative 01, others to 00 (In/OUT) */
+ *(IFXMIPS_GPIO_P0_DIR) = (*IFXMIPS_GPIO_P0_DIR) | (0xA000);
+ *(IFXMIPS_GPIO_P0_ALTSEL0) = (((*IFXMIPS_GPIO_P0_ALTSEL0) | (0x8000)) & (~(0x2000)));
+ *(IFXMIPS_GPIO_P0_ALTSEL1) = (((*IFXMIPS_GPIO_P0_ALTSEL1) & (~0x8000)) & (~(0x2000)));
+ *(IFXMIPS_GPIO_P0_OD) = (*IFXMIPS_GPIO_P0_OD) | 0xA000;
+
+ /* p1.6 SPI_CS2(SFLASH), p1.0 SPI_DIN, p1.1 SPI_DOUT, p1.2 SPI_CLK */
+ *(IFXMIPS_GPIO_P1_DIR) = ((*IFXMIPS_GPIO_P1_DIR) | (0x46)) & (~1);
+ *(IFXMIPS_GPIO_P1_ALTSEL0) = ((*IFXMIPS_GPIO_P1_ALTSEL0) | (0x47));
+ *(IFXMIPS_GPIO_P1_ALTSEL1) = (*IFXMIPS_GPIO_P1_ALTSEL1) & (~0x47);
+ *(IFXMIPS_GPIO_P1_OD) = (*IFXMIPS_GPIO_P1_OD) | 0x0046;
+
+ /*CS3 */
+ /*TODO: CS4 CS5 CS6 */
+ *IFXMIPS_GPIO_P0_OUT = ((*IFXMIPS_GPIO_P0_OUT) | 0x2000);
+
+ local_irq_restore (flags);
+
+ return 0;
+}
+
+static int
+ifx_ssc_set_baud (struct ifx_ssc_port *info, unsigned int baud)
+{
+ unsigned int ifx_ssc_clock;
+ unsigned int br;
+ unsigned long flags;
+ bool enabled;
+ int retval = 0;
+
+ ifx_ssc_clock = ifx_ssc_get_kernel_clk(info);
+ if (ifx_ssc_clock == 0)
+ {
+ retval = -EINVAL;
+ goto out;
+ }
+
+ local_irq_save (flags);
+
+ enabled = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_IS_ENABLED);
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
+
+ br = (((ifx_ssc_clock >> 1) + baud / 2) / baud) - 1;
+ wmb();
+
+ if (br > 0xffff || ((br == 0) &&
+ ((READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_IS_MASTER) == 0))) {
+ local_irq_restore (flags);
+ printk ("%s: invalid baudrate %u\n", __func__, baud);
+ return -EINVAL;
+ }
+
+ WRITE_PERIPHERAL_REGISTER (br, info->mapbase + IFX_SSC_BR);
+
+ if (enabled)
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
+
+ local_irq_restore(flags);
+
+out:
+ return retval;
+}
+
+static int
+ifx_ssc_hwinit (struct ifx_ssc_port *info)
+{
+ unsigned long flags;
+ bool enabled;
+
+ enabled = (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE) & IFX_SSC_STATE_IS_ENABLED);
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
+
+ if (ifx_ssc_sethwopts (info) < 0)
+ {
+ printk ("%s: setting the hardware options failed\n", __func__);
+ return -EINVAL;
+ }
+
+ if (ifx_ssc_set_baud (info, info->baud) < 0)
+ {
+ printk ("%s: setting the baud rate failed\n", __func__);
+ return -EINVAL;
+ }
+
+ local_irq_save (flags);
+
+ /* TX FIFO */
+ WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_TXFIFO_FL << IFX_SSC_XFCON_ITL_OFFSET) | IFX_SSC_XFCON_FIFO_ENABLE,
+ info->mapbase + IFX_SSC_TXFCON);
+ /* RX FIFO */
+ WRITE_PERIPHERAL_REGISTER ((IFX_SSC_DEF_RXFIFO_FL << IFX_SSC_XFCON_ITL_OFFSET) | IFX_SSC_XFCON_FIFO_ENABLE,
+ info->mapbase + IFX_SSC_RXFCON);
+
+ local_irq_restore (flags);
+
+ if (enabled)
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_SET_ENABLE, info->mapbase + IFX_SSC_WHBSTATE);
+
+ return 0;
+}
+
+int
+ifx_ssc_ioctl (struct inode *inode, struct file *filp, unsigned int cmd, unsigned long data)
+{
+ struct ifx_ssc_port *info;
+ int line, ret_val = 0;
+ unsigned long flags;
+ unsigned long tmp;
+ int from_kernel = 0;
+
+ if ((inode == (struct inode *) 0) || (inode == (struct inode *) 1))
+ {
+ from_kernel = 1;
+ line = (int) inode;
+ } else {
+ line = MINOR (filp->f_dentry->d_inode->i_rdev);
+ }
+
+ if (line < 0 || line >= PORT_CNT)
+ return -ENXIO;
+
+ info = &isp[line];
+
+ switch (cmd)
+ {
+ case IFX_SSC_STATS_READ:
+ /* data must be a pointer to a struct ifx_ssc_statistics */
+ if (from_kernel)
+ memcpy ((void *) data, (void *) &info->stats,
+ sizeof (struct ifx_ssc_statistics));
+ else if (copy_to_user ((void *) data,
+ (void *) &info->stats,
+ sizeof (struct ifx_ssc_statistics)))
+ ret_val = -EFAULT;
+ break;
+ case IFX_SSC_STATS_RESET:
+ /* just resets the statistics counters */
+ memset ((void *) &info->stats, 0,
+ sizeof (struct ifx_ssc_statistics));
+ break;
+ case IFX_SSC_BAUD_SET:
+ /* if the buffers are not empty then the port is */
+ /* busy and we shouldn't change things on-the-fly! */
+ if (!info->txbuf || !info->rxbuf ||
+ (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE)
+ & IFX_SSC_STATE_BUSY)) {
+ ret_val = -EBUSY;
+ break;
+ }
+ /* misuse flags */
+ if (from_kernel)
+ flags = *((unsigned long *) data);
+ else if (copy_from_user ((void *) &flags,
+ (void *) data, sizeof (flags))) {
+ ret_val = -EFAULT;
+ break;
+ }
+ if (flags == 0) {
+ ret_val = -EINVAL;
+ break;
+ }
+ if (ifx_ssc_set_baud (info, flags) < 0) {
+ ret_val = -EINVAL;
+ break;
+ }
+ info->baud = flags;
+ break;
+ case IFX_SSC_BAUD_GET:
+ if (from_kernel)
+ *((unsigned int *) data) = info->baud;
+ else if (copy_to_user ((void *) data,
+ (void *) &info->baud,
+ sizeof (unsigned long)))
+ ret_val = -EFAULT;
+ break;
+ case IFX_SSC_RXTX_MODE_SET:
+ if (from_kernel)
+ tmp = *((unsigned long *) data);
+ else if (copy_from_user ((void *) &tmp,
+ (void *) data, sizeof (tmp))) {
+ ret_val = -EFAULT;
+ break;
+ }
+ ret_val = ifx_ssc_rxtx_mode_set (info, tmp);
+ break;
+ case IFX_SSC_RXTX_MODE_GET:
+ tmp = READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_CON) &
+ (~(IFX_SSC_CON_RX_OFF | IFX_SSC_CON_TX_OFF));
+ if (from_kernel)
+ *((unsigned int *) data) = tmp;
+ else if (copy_to_user ((void *) data,
+ (void *) &tmp, sizeof (tmp)))
+ ret_val = -EFAULT;
+ break;
+
+ case IFX_SSC_ABORT:
+ ifx_ssc_abort (info);
+ break;
+
+ case IFX_SSC_GPO_OUT_SET:
+ if (from_kernel)
+ tmp = *((unsigned long *) data);
+ else if (copy_from_user ((void *) &tmp,
+ (void *) data, sizeof (tmp))) {
+ ret_val = -EFAULT;
+ break;
+ }
+ if (tmp > IFX_SSC_MAX_GPO_OUT)
+ ret_val = -EINVAL;
+ else
+ WRITE_PERIPHERAL_REGISTER
+ (1 << (tmp + IFX_SSC_WHBGPOSTAT_SETOUT0_POS),
+ info->mapbase + IFX_SSC_WHBGPOSTAT);
+ break;
+ case IFX_SSC_GPO_OUT_CLR:
+ if (from_kernel)
+ tmp = *((unsigned long *) data);
+ else if (copy_from_user ((void *) &tmp,
+ (void *) data, sizeof (tmp))) {
+ ret_val = -EFAULT;
+ break;
+ }
+ if (tmp > IFX_SSC_MAX_GPO_OUT)
+ ret_val = -EINVAL;
+ else {
+ WRITE_PERIPHERAL_REGISTER
+ (1 << (tmp + IFX_SSC_WHBGPOSTAT_CLROUT0_POS),
+ info->mapbase + IFX_SSC_WHBGPOSTAT);
+ }
+ break;
+ case IFX_SSC_GPO_OUT_GET:
+ tmp = READ_PERIPHERAL_REGISTER
+ (info->mapbase + IFX_SSC_GPOSTAT);
+ if (from_kernel)
+ *((unsigned int *) data) = tmp;
+ else if (copy_to_user ((void *) data,
+ (void *) &tmp, sizeof (tmp)))
+ ret_val = -EFAULT;
+ break;
+ case IFX_SSC_FRM_STATUS_GET:
+ ifx_ssc_frm_status_get (info);
+ if (from_kernel)
+ memcpy ((void *) data, (void *) &info->frm_status,
+ sizeof (struct ifx_ssc_frm_status));
+ else if (copy_to_user ((void *) data,
+ (void *) &info->frm_status,
+ sizeof (struct ifx_ssc_frm_status)))
+ ret_val = -EFAULT;
+ break;
+ case IFX_SSC_FRM_CONTROL_GET:
+ ifx_ssc_frm_control_get (info);
+ if (from_kernel)
+ memcpy ((void *) data, (void *) &info->frm_opts,
+ sizeof (struct ifx_ssc_frm_opts));
+ else if (copy_to_user ((void *) data,
+ (void *) &info->frm_opts,
+ sizeof (struct ifx_ssc_frm_opts)))
+ ret_val = -EFAULT;
+ break;
+ case IFX_SSC_FRM_CONTROL_SET:
+ if (from_kernel)
+ memcpy ((void *) &info->frm_opts, (void *) data,
+ sizeof (struct ifx_ssc_frm_opts));
+ else if (copy_to_user ((void *) &info->frm_opts,
+ (void *) data,
+ sizeof (struct ifx_ssc_frm_opts))) {
+ ret_val = -EFAULT;
+ break;
+ }
+ ret_val = ifx_ssc_frm_control_set (info);
+ break;
+ case IFX_SSC_HWOPTS_SET:
+ /* data must be a pointer to a struct ifx_ssc_hwopts */
+ /* if the buffers are not empty then the port is */
+ /* busy and we shouldn't change things on-the-fly! */
+ if (!info->txbuf || !info->rxbuf ||
+ (READ_PERIPHERAL_REGISTER (info->mapbase + IFX_SSC_STATE)
+ & IFX_SSC_STATE_BUSY)) {
+ ret_val = -EBUSY;
+ break;
+ }
+ if (from_kernel)
+ memcpy ((void *) &info->opts, (void *) data,
+ sizeof (struct ifx_ssc_hwopts));
+ else if (copy_from_user ((void *) &info->opts,
+ (void *) data,
+ sizeof (struct ifx_ssc_hwopts))) {
+ ret_val = -EFAULT;
+ break;
+ }
+ if (ifx_ssc_hwinit (info) < 0) {
+ ret_val = -EIO;
+ }
+ break;
+ case IFX_SSC_HWOPTS_GET:
+ /* data must be a pointer to a struct ifx_ssc_hwopts */
+ if (from_kernel)
+ memcpy ((void *) data, (void *) &info->opts,
+ sizeof (struct ifx_ssc_hwopts));
+ else if (copy_to_user ((void *) data,
+ (void *) &info->opts,
+ sizeof (struct ifx_ssc_hwopts)))
+ ret_val = -EFAULT;
+ break;
+ default:
+ ret_val = -ENOIOCTLCMD;
+ }
+
+ return ret_val;
+}
+EXPORT_SYMBOL(ifx_ssc_ioctl);
+
+static int
+ifx_ssc1_read_proc (char *page, char **start, off_t offset, int count, int *eof, void *data)
+{
+ int off = 0;
+ unsigned long flags;
+
+ local_save_flags(flags);
+ local_irq_disable();
+
+ off += sprintf (page + off, "Statistics for Infineon Synchronous Serial Controller SSC1\n");
+ off += sprintf (page + off, "RX overflow errors %d\n", isp[0].stats.rxOvErr);
+ off += sprintf (page + off, "RX underflow errors %d\n", isp[0].stats.rxUnErr);
+ off += sprintf (page + off, "TX overflow errors %d\n", isp[0].stats.txOvErr);
+ off += sprintf (page + off, "TX underflow errors %d\n", isp[0].stats.txUnErr);
+ off += sprintf (page + off, "Abort errors %d\n", isp[0].stats.abortErr);
+ off += sprintf (page + off, "Mode errors %d\n", isp[0].stats.modeErr);
+ off += sprintf (page + off, "RX Bytes %d\n", isp[0].stats.rxBytes);
+ off += sprintf (page + off, "TX Bytes %d\n", isp[0].stats.txBytes);
+
+ local_irq_restore(flags);
+ *eof = 1;
+
+ return off;
+}
+
+int __init
+ifx_ssc_init (void)
+{
+ struct ifx_ssc_port *info;
+ int i, nbytes;
+ unsigned long flags;
+ int ret_val;
+
+ ret_val = -ENOMEM;
+ nbytes = PORT_CNT * sizeof(struct ifx_ssc_port);
+ isp = (struct ifx_ssc_port*)kmalloc(nbytes, GFP_KERNEL);
+
+ if (isp == NULL)
+ {
+ printk("%s: no memory for isp\n", __func__);
+ return (ret_val);
+ }
+ memset(isp, 0, nbytes);
+
+ ret_val = -ENXIO;
+ if ((i = register_chrdev (maj, "ssc", &ifx_ssc_fops)) < 0)
+ {
+ printk ("Unable to register major %d for the Infineon SSC\n", maj);
+ if (maj == 0)
+ {
+ goto errout;
+ } else {
+ maj = 0;
+ if ((i = register_chrdev (maj, "ssc", &ifx_ssc_fops)) < 0)
+ {
+ printk ("Unable to register major %d for the Infineon SSC\n", maj);
+ goto errout;
+ }
+ }
+ }
+
+ if (maj == 0)
+ maj = i;
+
+ /* set default values in ifx_ssc_port */
+ for (i = 0; i < PORT_CNT; i++) {
+ info = &isp[i];
+ info->port_nr = i;
+ /* default values for the HwOpts */
+ info->opts.AbortErrDetect = IFX_SSC_DEF_ABRT_ERR_DETECT;
+ info->opts.rxOvErrDetect = IFX_SSC_DEF_RO_ERR_DETECT;
+ info->opts.rxUndErrDetect = IFX_SSC_DEF_RU_ERR_DETECT;
+ info->opts.txOvErrDetect = IFX_SSC_DEF_TO_ERR_DETECT;
+ info->opts.txUndErrDetect = IFX_SSC_DEF_TU_ERR_DETECT;
+ info->opts.loopBack = IFX_SSC_DEF_LOOP_BACK;
+ info->opts.echoMode = IFX_SSC_DEF_ECHO_MODE;
+ info->opts.idleValue = IFX_SSC_DEF_IDLE_DATA;
+ info->opts.clockPolarity = IFX_SSC_DEF_CLOCK_POLARITY;
+ info->opts.clockPhase = IFX_SSC_DEF_CLOCK_PHASE;
+ info->opts.headingControl = IFX_SSC_DEF_HEADING_CONTROL;
+ info->opts.dataWidth = IFX_SSC_DEF_DATA_WIDTH;
+ info->opts.modeRxTx = IFX_SSC_DEF_MODE_RXTX;
+ info->opts.gpoCs = IFX_SSC_DEF_GPO_CS;
+ info->opts.gpoInv = IFX_SSC_DEF_GPO_INV;
+ info->opts.masterSelect = IFX_SSC_DEF_MASTERSLAVE;
+ info->baud = IFX_SSC_DEF_BAUDRATE;
+ info->rxbuf = NULL;
+ info->txbuf = NULL;
+ /* values specific to SSC1 */
+ if (i == 0) {
+ info->mapbase = IFXMIPS_SSC1_BASE_ADDR;
+ info->txirq = IFXMIPS_SSC_TIR;
+ info->rxirq = IFXMIPS_SSC_RIR;
+ info->errirq = IFXMIPS_SSC_EIR;
+ }
+
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_DEF_RMC << IFX_CLC_RUN_DIVIDER_OFFSET, info->mapbase + IFX_SSC_CLC);
+
+ init_waitqueue_head (&info->rwait);
+
+ local_irq_save (flags);
+
+ // init serial framing register
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_DEF_SFCON, info->mapbase + IFX_SSC_SFCON);
+
+ ret_val = request_irq(info->txirq, ifx_ssc_tx_int, SA_INTERRUPT, "ifx_ssc_tx", info);
+ if (ret_val)
+ {
+ printk("%s: unable to get irq %d\n", __func__, info->txirq);
+ local_irq_restore(flags);
+ goto errout;
+ }
+
+ ret_val = request_irq(info->rxirq, ifx_ssc_rx_int, SA_INTERRUPT, "ifx_ssc_rx", info);
+ if (ret_val)
+ {
+ printk ("%s: unable to get irq %d\n", __func__, info->rxirq);
+ local_irq_restore (flags);
+ goto irqerr;
+ }
+
+ ret_val = request_irq(info->errirq, ifx_ssc_err_int, SA_INTERRUPT,"ifx_ssc_err", info);
+ if (ret_val)
+ {
+ printk ("%s: unable to get irq %d\n", __func__, info->errirq);
+ local_irq_restore (flags);
+ goto irqerr;
+ }
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_DEF_IRNEN, info->mapbase + IFX_SSC_IRN_EN);
+
+ enable_irq(info->txirq);
+ enable_irq(info->rxirq);
+ enable_irq(info->errirq);
+
+ local_irq_restore (flags);
+ }
+
+ for (i = 0; i < PORT_CNT; i++) {
+ info = &isp[i];
+ if (ifx_ssc_hwinit (info) < 0)
+ {
+ printk ("%s: hardware init failed for port %d\n", __func__, i);
+ goto irqerr;
+ }
+ }
+
+ create_proc_read_entry ("driver/ssc1", 0, NULL, ifx_ssc1_read_proc, NULL);
+
+ return 0;
+
+irqerr:
+ free_irq(isp[0].txirq, &isp[0]);
+ free_irq(isp[0].rxirq, &isp[0]);
+ free_irq(isp[0].errirq, &isp[0]);
+errout:
+ kfree (isp);
+ return (ret_val);
+}
+
+void
+ifx_ssc_cleanup_module (void)
+{
+ int i;
+
+ for (i = 0; i < PORT_CNT; i++) {
+ WRITE_PERIPHERAL_REGISTER (IFX_SSC_WHBSTATE_CLR_ENABLE, isp[i].mapbase + IFX_SSC_WHBSTATE);
+ free_irq(isp[i].txirq, &isp[i]);
+ free_irq(isp[i].rxirq, &isp[i]);
+ free_irq(isp[i].errirq, &isp[i]);
+ }
+ kfree (isp);
+ remove_proc_entry ("driver/ssc1", NULL);
+}
+
+module_init(ifx_ssc_init);
+module_exit(ifx_ssc_cleanup_module);
+
+
+inline int
+ifx_ssc_cs_low (u32 pin)
+{
+ int ret = 0;
+ if ((ret = ifx_ssc_ioctl ((struct inode *) 0, NULL, IFX_SSC_GPO_OUT_CLR, (unsigned long) &pin)))
+ printk ("clear CS %d fails\n", pin);
+ wmb ();
+
+ return ret;
+}
+EXPORT_SYMBOL(ifx_ssc_cs_low);
+
+inline int
+ifx_ssc_cs_high (u32 pin)
+{
+ int ret = 0;
+ if ((ret = ifx_ssc_ioctl((struct inode *) 0, NULL, IFX_SSC_GPO_OUT_SET, (unsigned long) &pin)))
+ printk ("set CS %d fails\n", pin);
+ wmb ();
+
+ return ret;
+}
+EXPORT_SYMBOL(ifx_ssc_cs_high);
+
+static int
+ssc_session (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len)
+{
+ int ret = 0;
+
+ char *ssc_tx_buf = NULL;
+ char *ssc_rx_buf = NULL;
+ int eff_size = 0;
+ u8 mode = 0;
+
+ if (tx_buf == NULL && tx_len == 0 && rx_buf == NULL && rx_len == 0) {
+ printk ("invalid parameters\n");
+ ret = -EINVAL;
+ goto ssc_session_exit;
+ }
+ else if (tx_buf == NULL || tx_len == 0) {
+ if (rx_buf != NULL && rx_len != 0) {
+ mode = IFX_SSC_MODE_RX;
+ }
+ else {
+ printk ("invalid parameters\n");
+ ret = -EINVAL;
+ goto ssc_session_exit;
+ }
+ }
+ else if (rx_buf == NULL || rx_len == 0) {
+ if (tx_buf != NULL && tx_len != 0) {
+ mode = IFX_SSC_MODE_TX;
+ }
+ else {
+ printk ("invalid parameters\n");
+ ret = -EINVAL;
+ goto ssc_session_exit;
+ }
+ }
+ else {
+ mode = IFX_SSC_MODE_RXTX;
+ }
+
+ if (mode == IFX_SSC_MODE_RXTX) {
+ eff_size = tx_len + rx_len;
+ }
+ else if (mode == IFX_SSC_MODE_RX) {
+ eff_size = rx_len;
+ }
+ else {
+ eff_size = tx_len;
+ }
+
+ //4 bytes alignment, required by driver
+ /* change by TaiCheng */
+ //if (in_irq()){
+ if (1) {
+ ssc_tx_buf =
+ (char *) kmalloc (sizeof (char) *
+ ((eff_size + 3) & (~3)),
+ GFP_ATOMIC);
+ ssc_rx_buf =
+ (char *) kmalloc (sizeof (char) *
+ ((eff_size + 3) & (~3)),
+ GFP_ATOMIC);
+ }
+ else {
+ ssc_tx_buf =
+ (char *) kmalloc (sizeof (char) *
+ ((eff_size + 3) & (~3)),
+ GFP_KERNEL);
+ ssc_rx_buf =
+ (char *) kmalloc (sizeof (char) *
+ ((eff_size + 3) & (~3)),
+ GFP_KERNEL);
+ }
+ if (ssc_tx_buf == NULL || ssc_rx_buf == NULL) {
+ printk ("no memory for size of %d\n", eff_size);
+ ret = -ENOMEM;
+ goto ssc_session_exit;
+ }
+ memset ((void *) ssc_tx_buf, 0, eff_size);
+ memset ((void *) ssc_rx_buf, 0, eff_size);
+
+ if (tx_len > 0) {
+ memcpy (ssc_tx_buf, tx_buf, tx_len);
+ }
+
+ ret = ifx_ssc_kwrite (0, ssc_tx_buf, eff_size);
+
+ if (ret > 0) {
+ ssc_tx_buf = NULL; //should be freed by ifx_ssc_kwrite
+ }
+
+ if (ret != eff_size) {
+ printk ("ifx_ssc_write return %d\n", ret);
+ goto ssc_session_exit;
+ }
+ ret = ifx_ssc_kread (0, ssc_rx_buf, eff_size);
+ if (ret != eff_size) {
+ printk ("ifx_ssc_read return %d\n", ret);
+ goto ssc_session_exit;
+ }
+
+ memcpy (rx_buf, ssc_rx_buf + tx_len, rx_len);
+
+ if (mode == IFX_SSC_MODE_TX) {
+ ret = tx_len;
+ }
+ else {
+ ret = rx_len;
+ }
+ ssc_session_exit:
+
+ if (ssc_tx_buf != NULL)
+ kfree (ssc_tx_buf);
+ if (ssc_rx_buf != NULL)
+ kfree (ssc_rx_buf);
+
+ if (ret < 0) {
+ printk ("ssc session fails\n");
+ }
+ return ret;
+}
+
+int
+ifx_ssc_txrx (char *tx_buf, u32 tx_len, char *rx_buf, u32 rx_len)
+{
+ return ssc_session(tx_buf, tx_len, rx_buf, rx_len);
+}
+EXPORT_SYMBOL(ifx_ssc_txrx);
+
+int
+ifx_ssc_tx (char *tx_buf, u32 tx_len)
+{
+ return ssc_session(tx_buf, tx_len, NULL, 0);
+}
+EXPORT_SYMBOL(ifx_ssc_tx);
+
+int
+ifx_ssc_rx (char *rx_buf, u32 rx_len)
+{
+ return ssc_session(NULL, 0, rx_buf, rx_len);
+}
+EXPORT_SYMBOL(ifx_ssc_rx);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
+MODULE_DESCRIPTION("ifxmips ssc driver");
+
+++ /dev/null
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- *
- * Copyright (C) 2006 infineon
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
- *
- */
-
-#include <asm/uaccess.h>
-#include <linux/errno.h>
-#include <linux/proc_fs.h>
-#include <linux/ioctl.h>
-#include <linux/module.h>
-#include <asm-mips/ifxmips/ifxmips_wdt.h>
-#include <asm-mips/ifxmips/ifxmips.h>
-
-
-// TODO remove magic numbers and weirdo macros
-
-extern unsigned int ifxmips_get_fpi_hz (void);
-
-static int ifxmips_wdt_inuse = 0;
-static int ifxmips_wdt_major = 0;
-
-int
-ifxmips_wdt_enable (unsigned int timeout)
-{
- unsigned int wdt_cr = 0;
- unsigned int wdt_reload = 0;
- unsigned int wdt_clkdiv, wdt_pwl, ffpi;
- int retval = 0;
-
- /* clock divider & prewarning limit */
- wdt_clkdiv = 1 << (7 * IFXMIPS_BIU_WDT_CR_CLKDIV_GET(readl(IFXMIPS_BIU_WDT_CR)));
- wdt_pwl = 0x8000 >> IFXMIPS_BIU_WDT_CR_PWL_GET(readl(IFXMIPS_BIU_WDT_CR));
-
- //TODO
- printk("WARNING FUNCTION CALL MISSING!!!");
- //ffpi = cgu_get_io_region_clock();
- printk("cpu clock = %d\n", ffpi);
-
- /* caculate reload value */
- wdt_reload = (timeout * (ffpi / wdt_clkdiv)) + wdt_pwl;
-
- printk("wdt_pwl=0x%x, wdt_clkdiv=%d, ffpi=%d, wdt_reload = 0x%x\n",
- wdt_pwl, wdt_clkdiv, ffpi, wdt_reload);
-
- if (wdt_reload > 0xFFFF)
- {
- printk ("timeout too large %d\n", timeout);
- retval = -EINVAL;
- goto out;
- }
-
- /* Write first part of password access */
- writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
-
- wdt_cr = readl(IFXMIPS_BIU_WDT_CR);
- wdt_cr &= (!IFXMIPS_BIU_WDT_CR_PW_SET(0xff) &
- !IFXMIPS_BIU_WDT_CR_PWL_SET(0x3) &
- !IFXMIPS_BIU_WDT_CR_CLKDIV_SET(0x3) &
- !IFXMIPS_BIU_WDT_CR_RELOAD_SET(0xffff));
-
- wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) |
- IFXMIPS_BIU_WDT_CR_PWL_SET(IFXMIPS_BIU_WDT_CR_PWL_GET(readl(IFXMIPS_BIU_WDT_CR))) |
- IFXMIPS_BIU_WDT_CR_CLKDIV_SET(IFXMIPS_BIU_WDT_CR_CLKDIV_GET(readl(IFXMIPS_BIU_WDT_CR))) |
- IFXMIPS_BIU_WDT_CR_RELOAD_SET(wdt_reload) |
- IFXMIPS_BIU_WDT_CR_GEN);
-
- writel(wdt_cr, IFXMIPS_BIU_WDT_CR);
-
- printk("watchdog enabled\n");
-
-out:
- return retval;
-}
-
-void
-ifxmips_wdt_disable (void)
-{
- writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
- writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2), IFXMIPS_BIU_WDT_CR);
-
- printk("watchdog disabled\n");
-}
-
-/* passed LPEN or DSEN */
-void
-ifxmips_wdt_enable_feature (int en, int type)
-{
- unsigned int wdt_cr = 0;
-
- writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
-
- wdt_cr = readl(IFXMIPS_BIU_WDT_CR);
-
- if (en)
- {
- wdt_cr &= (~IFXMIPS_BIU_WDT_CR_PW_SET(0xff));
- wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | type);
- } else {
- wdt_cr &= (~IFXMIPS_BIU_WDT_CR_PW_SET(0xff) & ~type);
- wdt_cr |= IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2);
- }
-
- writel(wdt_cr, IFXMIPS_BIU_WDT_CR);
-}
-
-void
-ifxmips_wdt_prewarning_limit (int pwl)
-{
- unsigned int wdt_cr = 0;
-
- wdt_cr = readl(IFXMIPS_BIU_WDT_CR);
- writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
-
- wdt_cr &= 0xf300ffff;
- wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | IFXMIPS_BIU_WDT_CR_PWL_SET(pwl));
-
- /* Set reload value in second password access */
- writel(wdt_cr, IFXMIPS_BIU_WDT_CR);
-}
-
-void
-ifxmips_wdt_set_clkdiv (int clkdiv)
-{
- unsigned int wdt_cr = 0;
-
- wdt_cr = readl(IFXMIPS_BIU_WDT_CR);
- writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
-
- wdt_cr &= 0xfc00ffff;
- wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | IFXMIPS_BIU_WDT_CR_CLKDIV_SET(clkdiv));
-
- /* Set reload value in second password access */
- writel(wdt_cr, IFXMIPS_BIU_WDT_CR);
-}
-
-static int
-ifxmips_wdt_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- int result = 0;
- static int timeout = -1;
- unsigned int user_arg;
-
- if ((cmd != IFXMIPS_WDT_IOC_STOP) && (cmd != IFXMIPS_WDT_IOC_PING) && (cmd != IFXMIPS_WDT_IOC_GET_STATUS))
- {
- if (copy_from_user((void *) &user_arg, (void *) arg, sizeof (int))){
- result = -EINVAL;
- goto out;
- }
- }
-
- switch (cmd)
- {
- case IFXMIPS_WDT_IOC_START:
- if ((result = ifxmips_wdt_enable(user_arg)) < 0)
- timeout = -1;
- else
- timeout = user_arg;
- break;
-
- case IFXMIPS_WDT_IOC_STOP:
- printk("disable watch dog timer\n");
- ifxmips_wdt_disable();
- break;
-
- case IFXMIPS_WDT_IOC_PING:
- if (timeout < 0)
- result = -EIO;
- else
- result = ifxmips_wdt_enable(timeout);
- break;
-
- case IFXMIPS_WDT_IOC_GET_STATUS:
- user_arg = readl(IFXMIPS_BIU_WDT_SR);
- copy_to_user((int*)arg, (int*)&user_arg, sizeof(int));
- break;
-
- case IFXMIPS_WDT_IOC_SET_PWL:
- ifxmips_wdt_prewarning_limit(user_arg);
- break;
-
- case IFXMIPS_WDT_IOC_SET_DSEN:
- ifxmips_wdt_enable_feature(user_arg, IFXMIPS_BIU_WDT_CR_DSEN);
- break;
-
- case IFXMIPS_WDT_IOC_SET_LPEN:
- ifxmips_wdt_enable_feature(user_arg, IFXMIPS_BIU_WDT_CR_LPEN);
- break;
-
- case IFXMIPS_WDT_IOC_SET_CLKDIV:
- ifxmips_wdt_set_clkdiv(user_arg);
- break;
-
- default:
- printk("unknown watchdog iotcl\n");
- }
-
-out:
- return result;
-}
-
-static int
-ifxmips_wdt_open (struct inode *inode, struct file *file)
-{
- if (ifxmips_wdt_inuse)
- return -EBUSY;
-
- ifxmips_wdt_inuse = 1;
-
- return 0;
-}
-
-static int
-ifxmips_wdt_release (struct inode *inode, struct file *file)
-{
- ifxmips_wdt_inuse = 0;
-
- return 0;
-}
-
-int
-ifxmips_wdt_register_proc_read (char *buf, char **start, off_t offset, int count,
- int *eof, void *data)
-{
- int len = 0;
-
- len += sprintf (buf + len, "IFXMIPS_BIU_WDT_PROC_READ\n");
- len += sprintf (buf + len, "IFXMIPS_BIU_WDT_CR(0x%08x) : 0x%08x\n",
- (unsigned int)IFXMIPS_BIU_WDT_CR, readl(IFXMIPS_BIU_WDT_CR));
- len += sprintf (buf + len, "IFXMIPS_BIU_WDT_SR(0x%08x) : 0x%08x\n",
- (unsigned int)IFXMIPS_BIU_WDT_SR, readl(IFXMIPS_BIU_WDT_SR));
-
- *eof = 1;
-
- return len;
-}
-
-static struct file_operations wdt_fops = {
- .owner = THIS_MODULE,
- .ioctl = ifxmips_wdt_ioctl,
- .open = ifxmips_wdt_open,
- .release = ifxmips_wdt_release,
-};
-
-int __init
-ifxmips_wdt_init_module (void)
-{
- ifxmips_wdt_major = register_chrdev(0, "wdt", &wdt_fops);
-
- if (ifxmips_wdt_major < 0)
- {
- printk("cannot register watchdog device\n");
-
- return -EINVAL;
- }
-
- create_proc_read_entry("ifxmips_wdt", 0, NULL, ifxmips_wdt_register_proc_read, NULL);
-
- printk("ifxmips watchdog loaded\n");
-
- return 0;
-}
-
-void
-ifxmips_wdt_cleanup_module (void)
-{
- unregister_chrdev(ifxmips_wdt_major, "wdt");
- remove_proc_entry("ifxmips_wdt", NULL);
-}
-
-module_init(ifxmips_wdt_init_module);
-module_exit(ifxmips_wdt_cleanup_module);
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) 2006 infineon
+ * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
+ *
+ */
+
+#include <asm/uaccess.h>
+#include <linux/errno.h>
+#include <linux/proc_fs.h>
+#include <linux/ioctl.h>
+#include <linux/module.h>
+#include <asm-mips/ifxmips/ifxmips_wdt.h>
+#include <asm-mips/ifxmips/ifxmips.h>
+
+
+// TODO remove magic numbers and weirdo macros
+
+extern unsigned int ifxmips_get_fpi_hz (void);
+
+static int ifxmips_wdt_inuse = 0;
+static int ifxmips_wdt_major = 0;
+
+int
+ifxmips_wdt_enable (unsigned int timeout)
+{
+ unsigned int wdt_cr = 0;
+ unsigned int wdt_reload = 0;
+ unsigned int wdt_clkdiv, wdt_pwl, ffpi;
+ int retval = 0;
+
+ /* clock divider & prewarning limit */
+ wdt_clkdiv = 1 << (7 * IFXMIPS_BIU_WDT_CR_CLKDIV_GET(readl(IFXMIPS_BIU_WDT_CR)));
+ wdt_pwl = 0x8000 >> IFXMIPS_BIU_WDT_CR_PWL_GET(readl(IFXMIPS_BIU_WDT_CR));
+
+ //TODO
+ printk("WARNING FUNCTION CALL MISSING!!!");
+ //ffpi = cgu_get_io_region_clock();
+ printk("cpu clock = %d\n", ffpi);
+
+ /* caculate reload value */
+ wdt_reload = (timeout * (ffpi / wdt_clkdiv)) + wdt_pwl;
+
+ printk("wdt_pwl=0x%x, wdt_clkdiv=%d, ffpi=%d, wdt_reload = 0x%x\n",
+ wdt_pwl, wdt_clkdiv, ffpi, wdt_reload);
+
+ if (wdt_reload > 0xFFFF)
+ {
+ printk ("timeout too large %d\n", timeout);
+ retval = -EINVAL;
+ goto out;
+ }
+
+ /* Write first part of password access */
+ writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
+
+ wdt_cr = readl(IFXMIPS_BIU_WDT_CR);
+ wdt_cr &= (!IFXMIPS_BIU_WDT_CR_PW_SET(0xff) &
+ !IFXMIPS_BIU_WDT_CR_PWL_SET(0x3) &
+ !IFXMIPS_BIU_WDT_CR_CLKDIV_SET(0x3) &
+ !IFXMIPS_BIU_WDT_CR_RELOAD_SET(0xffff));
+
+ wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) |
+ IFXMIPS_BIU_WDT_CR_PWL_SET(IFXMIPS_BIU_WDT_CR_PWL_GET(readl(IFXMIPS_BIU_WDT_CR))) |
+ IFXMIPS_BIU_WDT_CR_CLKDIV_SET(IFXMIPS_BIU_WDT_CR_CLKDIV_GET(readl(IFXMIPS_BIU_WDT_CR))) |
+ IFXMIPS_BIU_WDT_CR_RELOAD_SET(wdt_reload) |
+ IFXMIPS_BIU_WDT_CR_GEN);
+
+ writel(wdt_cr, IFXMIPS_BIU_WDT_CR);
+
+ printk("watchdog enabled\n");
+
+out:
+ return retval;
+}
+
+void
+ifxmips_wdt_disable (void)
+{
+ writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
+ writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2), IFXMIPS_BIU_WDT_CR);
+
+ printk("watchdog disabled\n");
+}
+
+/* passed LPEN or DSEN */
+void
+ifxmips_wdt_enable_feature (int en, int type)
+{
+ unsigned int wdt_cr = 0;
+
+ writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
+
+ wdt_cr = readl(IFXMIPS_BIU_WDT_CR);
+
+ if (en)
+ {
+ wdt_cr &= (~IFXMIPS_BIU_WDT_CR_PW_SET(0xff));
+ wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | type);
+ } else {
+ wdt_cr &= (~IFXMIPS_BIU_WDT_CR_PW_SET(0xff) & ~type);
+ wdt_cr |= IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2);
+ }
+
+ writel(wdt_cr, IFXMIPS_BIU_WDT_CR);
+}
+
+void
+ifxmips_wdt_prewarning_limit (int pwl)
+{
+ unsigned int wdt_cr = 0;
+
+ wdt_cr = readl(IFXMIPS_BIU_WDT_CR);
+ writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
+
+ wdt_cr &= 0xf300ffff;
+ wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | IFXMIPS_BIU_WDT_CR_PWL_SET(pwl));
+
+ /* Set reload value in second password access */
+ writel(wdt_cr, IFXMIPS_BIU_WDT_CR);
+}
+
+void
+ifxmips_wdt_set_clkdiv (int clkdiv)
+{
+ unsigned int wdt_cr = 0;
+
+ wdt_cr = readl(IFXMIPS_BIU_WDT_CR);
+ writel(IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW1), IFXMIPS_BIU_WDT_CR);
+
+ wdt_cr &= 0xfc00ffff;
+ wdt_cr |= (IFXMIPS_BIU_WDT_CR_PW_SET(IFXMIPS_WDT_PW2) | IFXMIPS_BIU_WDT_CR_CLKDIV_SET(clkdiv));
+
+ /* Set reload value in second password access */
+ writel(wdt_cr, IFXMIPS_BIU_WDT_CR);
+}
+
+static int
+ifxmips_wdt_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ int result = 0;
+ static int timeout = -1;
+ unsigned int user_arg;
+
+ if ((cmd != IFXMIPS_WDT_IOC_STOP) && (cmd != IFXMIPS_WDT_IOC_PING) && (cmd != IFXMIPS_WDT_IOC_GET_STATUS))
+ {
+ if (copy_from_user((void *) &user_arg, (void *) arg, sizeof (int))){
+ result = -EINVAL;
+ goto out;
+ }
+ }
+
+ switch (cmd)
+ {
+ case IFXMIPS_WDT_IOC_START:
+ if ((result = ifxmips_wdt_enable(user_arg)) < 0)
+ timeout = -1;
+ else
+ timeout = user_arg;
+ break;
+
+ case IFXMIPS_WDT_IOC_STOP:
+ printk("disable watch dog timer\n");
+ ifxmips_wdt_disable();
+ break;
+
+ case IFXMIPS_WDT_IOC_PING:
+ if (timeout < 0)
+ result = -EIO;
+ else
+ result = ifxmips_wdt_enable(timeout);
+ break;
+
+ case IFXMIPS_WDT_IOC_GET_STATUS:
+ user_arg = readl(IFXMIPS_BIU_WDT_SR);
+ copy_to_user((int*)arg, (int*)&user_arg, sizeof(int));
+ break;
+
+ case IFXMIPS_WDT_IOC_SET_PWL:
+ ifxmips_wdt_prewarning_limit(user_arg);
+ break;
+
+ case IFXMIPS_WDT_IOC_SET_DSEN:
+ ifxmips_wdt_enable_feature(user_arg, IFXMIPS_BIU_WDT_CR_DSEN);
+ break;
+
+ case IFXMIPS_WDT_IOC_SET_LPEN:
+ ifxmips_wdt_enable_feature(user_arg, IFXMIPS_BIU_WDT_CR_LPEN);
+ break;
+
+ case IFXMIPS_WDT_IOC_SET_CLKDIV:
+ ifxmips_wdt_set_clkdiv(user_arg);
+ break;
+
+ default:
+ printk("unknown watchdog iotcl\n");
+ }
+
+out:
+ return result;
+}
+
+static int
+ifxmips_wdt_open (struct inode *inode, struct file *file)
+{
+ if (ifxmips_wdt_inuse)
+ return -EBUSY;
+
+ ifxmips_wdt_inuse = 1;
+
+ return 0;
+}
+
+static int
+ifxmips_wdt_release (struct inode *inode, struct file *file)
+{
+ ifxmips_wdt_inuse = 0;
+
+ return 0;
+}
+
+int
+ifxmips_wdt_register_proc_read (char *buf, char **start, off_t offset, int count,
+ int *eof, void *data)
+{
+ int len = 0;
+
+ len += sprintf (buf + len, "IFXMIPS_BIU_WDT_PROC_READ\n");
+ len += sprintf (buf + len, "IFXMIPS_BIU_WDT_CR(0x%08x) : 0x%08x\n",
+ (unsigned int)IFXMIPS_BIU_WDT_CR, readl(IFXMIPS_BIU_WDT_CR));
+ len += sprintf (buf + len, "IFXMIPS_BIU_WDT_SR(0x%08x) : 0x%08x\n",
+ (unsigned int)IFXMIPS_BIU_WDT_SR, readl(IFXMIPS_BIU_WDT_SR));
+
+ *eof = 1;
+
+ return len;
+}
+
+static struct file_operations wdt_fops = {
+ .owner = THIS_MODULE,
+ .ioctl = ifxmips_wdt_ioctl,
+ .open = ifxmips_wdt_open,
+ .release = ifxmips_wdt_release,
+};
+
+int __init
+ifxmips_wdt_init_module (void)
+{
+ ifxmips_wdt_major = register_chrdev(0, "wdt", &wdt_fops);
+
+ if (ifxmips_wdt_major < 0)
+ {
+ printk("cannot register watchdog device\n");
+
+ return -EINVAL;
+ }
+
+ create_proc_read_entry("ifxmips_wdt", 0, NULL, ifxmips_wdt_register_proc_read, NULL);
+
+ printk("ifxmips watchdog loaded\n");
+
+ return 0;
+}
+
+void
+ifxmips_wdt_cleanup_module (void)
+{
+ unregister_chrdev(ifxmips_wdt_major, "wdt");
+ remove_proc_entry("ifxmips_wdt", NULL);
+}
+
+module_init(ifxmips_wdt_init_module);
+module_exit(ifxmips_wdt_cleanup_module);
+++ /dev/null
-/*
- * Driver for IFXMIPS flashmap
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Copyright (C) 2004 Liu Peng Infineon IFAP DC COM CPE
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <asm/io.h>
-
-#include <linux/init.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/partitions.h>
-#include <linux/mtd/cfi.h>
-#include <asm/danube/danube.h>
-#include <linux/magic.h>
-
-static struct map_info
-danube_map = {
- .name = "IFXMIPS_FLASH",
- .bankwidth = 2,
- .size = 0x400000,
-};
-
-static map_word
-danube_read16 (struct map_info * map, unsigned long adr)
-{
- map_word temp;
-
- adr ^= 2;
- temp.x[0] = *((__u16 *) (map->virt + adr));
-
- return temp;
-}
-
-static void
-danube_write16 (struct map_info *map, map_word d, unsigned long adr)
-{
- adr ^= 2;
- *((__u16 *) (map->virt + adr)) = d.x[0];
-}
-
-void
-danube_copy_from (struct map_info *map, void *to, unsigned long from, ssize_t len)
-{
- u8 *p;
- u8 *to_8;
-
- from = (unsigned long) (from + map->virt);
- p = (u8 *) from;
- to_8 = (u8 *) to;
- while(len--){
- *to_8++ = *p++;
- }
-}
-
-void
-danube_copy_to (struct map_info *map, unsigned long to, const void *from, ssize_t len)
-{
- u8 *p = (u8*) from;
- u8 *to_8;
-
- to += (unsigned long) map->virt;
- to_8 = (u8*)to;
- while(len--){
- *p++ = *to_8++;
- }
-}
-
-static struct mtd_partition
-danube_partitions[4] = {
- {
- name:"U-Boot",
- offset:0x00000000,
- size:0x00020000,
- },
- {
- name:"U-Boot-Env",
- offset:0x00020000,
- size:0x00010000,
- },
- {
- name:"kernel",
- offset:0x00030000,
- size:0x0,
- },
- {
- name:"rootfs",
- offset:0x0,
- size:0x0,
- },
-};
-
-#define IFXMIPS_FLASH_START 0x10000000
-#define IFXMIPS_FLASH_MAX 0x2000000
-
-int
-find_uImage_size (unsigned long start_offset){
- unsigned long temp;
-
- danube_copy_from(&danube_map, &temp, start_offset + 12, 4);
- printk("kernel size is %ld \n", temp + 0x40);
- return temp + 0x40;
-}
-
-int
-detect_squashfs_partition (unsigned long start_offset){
- unsigned long temp;
-
- danube_copy_from(&danube_map, &temp, start_offset, 4);
-
- return (temp == SQUASHFS_MAGIC);
-}
-
-int __init
-init_danube_mtd (void)
-{
- struct mtd_info *danube_mtd = NULL;
- struct mtd_partition *parts = NULL;
- unsigned long uimage_size;
-
- writel(0x1d7ff, IFXMIPS_EBU_BUSCON0);
-
- danube_map.read = danube_read16;
- danube_map.write = danube_write16;
- danube_map.copy_from = danube_copy_from;
- danube_map.copy_to = danube_copy_to;
-
- danube_map.phys = IFXMIPS_FLASH_START;
- danube_map.virt = ioremap_nocache(IFXMIPS_FLASH_START, IFXMIPS_FLASH_MAX);
- danube_map.size = IFXMIPS_FLASH_MAX;
- if (!danube_map.virt) {
- printk(KERN_WARNING "Failed to ioremap!\n");
- return -EIO;
- }
-
- danube_mtd = (struct mtd_info *) do_map_probe("cfi_probe", &danube_map);
- if (!danube_mtd) {
- iounmap(danube_map.virt);
- printk("probing failed\n");
- return -ENXIO;
- }
-
- danube_mtd->owner = THIS_MODULE;
-
- uimage_size = find_uImage_size(danube_partitions[2].offset);
-
- if(detect_squashfs_partition(danube_partitions[2].offset + uimage_size)){
- printk("Found a squashfs following the uImage\n");
- } else {
- uimage_size &= ~0xffff;
- uimage_size += 0x10000;
- }
-
- danube_partitions[2].size = uimage_size;
- danube_partitions[3].offset = danube_partitions[2].offset + danube_partitions[2].size;
- danube_partitions[3].size = ((danube_mtd->size >> 20) * 1024 * 1024) - danube_partitions[3].offset;
-
- parts = &danube_partitions[0];
- add_mtd_partitions(danube_mtd, parts, 4);
-
- printk("Added danube flash with %dMB\n", danube_mtd->size >> 20);
- return 0;
-}
-
-static void
-__exit
-cleanup_danube_mtd (void)
-{
-}
-
-module_init (init_danube_mtd);
-module_exit (cleanup_danube_mtd);
-
-MODULE_LICENSE ("GPL");
-MODULE_AUTHOR ("John Crispin <blogic@openwrt.org>");
-MODULE_DESCRIPTION ("MTD map driver for IFXMIPS boards");
--- /dev/null
+/*
+ * Driver for IFXMIPS flashmap
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Copyright (C) 2004 Liu Peng Infineon IFAP DC COM CPE
+ * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <asm/io.h>
+
+#include <linux/init.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/cfi.h>
+#include <asm/danube/danube.h>
+#include <linux/magic.h>
+
+static struct map_info
+danube_map = {
+ .name = "IFXMIPS_FLASH",
+ .bankwidth = 2,
+ .size = 0x400000,
+};
+
+static map_word
+danube_read16 (struct map_info * map, unsigned long adr)
+{
+ map_word temp;
+
+ adr ^= 2;
+ temp.x[0] = *((__u16 *) (map->virt + adr));
+
+ return temp;
+}
+
+static void
+danube_write16 (struct map_info *map, map_word d, unsigned long adr)
+{
+ adr ^= 2;
+ *((__u16 *) (map->virt + adr)) = d.x[0];
+}
+
+void
+danube_copy_from (struct map_info *map, void *to, unsigned long from, ssize_t len)
+{
+ u8 *p;
+ u8 *to_8;
+
+ from = (unsigned long) (from + map->virt);
+ p = (u8 *) from;
+ to_8 = (u8 *) to;
+ while(len--){
+ *to_8++ = *p++;
+ }
+}
+
+void
+danube_copy_to (struct map_info *map, unsigned long to, const void *from, ssize_t len)
+{
+ u8 *p = (u8*) from;
+ u8 *to_8;
+
+ to += (unsigned long) map->virt;
+ to_8 = (u8*)to;
+ while(len--){
+ *p++ = *to_8++;
+ }
+}
+
+static struct mtd_partition
+danube_partitions[4] = {
+ {
+ name:"U-Boot",
+ offset:0x00000000,
+ size:0x00020000,
+ },
+ {
+ name:"U-Boot-Env",
+ offset:0x00020000,
+ size:0x00010000,
+ },
+ {
+ name:"kernel",
+ offset:0x00030000,
+ size:0x0,
+ },
+ {
+ name:"rootfs",
+ offset:0x0,
+ size:0x0,
+ },
+};
+
+#define IFXMIPS_FLASH_START 0x10000000
+#define IFXMIPS_FLASH_MAX 0x2000000
+
+int
+find_uImage_size (unsigned long start_offset){
+ unsigned long temp;
+
+ danube_copy_from(&danube_map, &temp, start_offset + 12, 4);
+ printk("kernel size is %ld \n", temp + 0x40);
+ return temp + 0x40;
+}
+
+int
+detect_squashfs_partition (unsigned long start_offset){
+ unsigned long temp;
+
+ danube_copy_from(&danube_map, &temp, start_offset, 4);
+
+ return (temp == SQUASHFS_MAGIC);
+}
+
+int __init
+init_danube_mtd (void)
+{
+ struct mtd_info *danube_mtd = NULL;
+ struct mtd_partition *parts = NULL;
+ unsigned long uimage_size;
+
+ writel(0x1d7ff, IFXMIPS_EBU_BUSCON0);
+
+ danube_map.read = danube_read16;
+ danube_map.write = danube_write16;
+ danube_map.copy_from = danube_copy_from;
+ danube_map.copy_to = danube_copy_to;
+
+ danube_map.phys = IFXMIPS_FLASH_START;
+ danube_map.virt = ioremap_nocache(IFXMIPS_FLASH_START, IFXMIPS_FLASH_MAX);
+ danube_map.size = IFXMIPS_FLASH_MAX;
+ if (!danube_map.virt) {
+ printk(KERN_WARNING "Failed to ioremap!\n");
+ return -EIO;
+ }
+
+ danube_mtd = (struct mtd_info *) do_map_probe("cfi_probe", &danube_map);
+ if (!danube_mtd) {
+ iounmap(danube_map.virt);
+ printk("probing failed\n");
+ return -ENXIO;
+ }
+
+ danube_mtd->owner = THIS_MODULE;
+
+ uimage_size = find_uImage_size(danube_partitions[2].offset);
+
+ if(detect_squashfs_partition(danube_partitions[2].offset + uimage_size)){
+ printk("Found a squashfs following the uImage\n");
+ } else {
+ uimage_size &= ~0xffff;
+ uimage_size += 0x10000;
+ }
+
+ danube_partitions[2].size = uimage_size;
+ danube_partitions[3].offset = danube_partitions[2].offset + danube_partitions[2].size;
+ danube_partitions[3].size = ((danube_mtd->size >> 20) * 1024 * 1024) - danube_partitions[3].offset;
+
+ parts = &danube_partitions[0];
+ add_mtd_partitions(danube_mtd, parts, 4);
+
+ printk("Added danube flash with %dMB\n", danube_mtd->size >> 20);
+ return 0;
+}
+
+static void
+__exit
+cleanup_danube_mtd (void)
+{
+}
+
+module_init (init_danube_mtd);
+module_exit (cleanup_danube_mtd);
+
+MODULE_LICENSE ("GPL");
+MODULE_AUTHOR ("John Crispin <blogic@openwrt.org>");
+MODULE_DESCRIPTION ("MTD map driver for IFXMIPS boards");
+++ /dev/null
-/*
- * drivers/net/ifxmips_mii0.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- *
- * Copyright (C) 2005 Infineon
- *
- * Rewrite of Infineon IFXMips code, thanks to infineon for the support,
- * software and hardware
- *
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/interrupt.h>
-#include <asm/uaccess.h>
-#include <linux/in.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/ip.h>
-#include <linux/tcp.h>
-#include <linux/skbuff.h>
-#include <linux/mm.h>
-#include <linux/ethtool.h>
-#include <asm/checksum.h>
-#include <linux/init.h>
-#include <asm/delay.h>
-#include <asm/ifxmips/ifxmips.h>
-#include <asm/ifxmips/ifxmips_mii0.h>
-#include <asm/ifxmips/ifxmips_dma.h>
-#include <asm/ifxmips/ifxmips_pmu.h>
-
-static struct net_device ifxmips_mii0_dev;
-static unsigned char u_boot_ethaddr[MAX_ADDR_LEN];
-
-void
-ifxmips_write_mdio (u32 phy_addr, u32 phy_reg, u16 phy_data)
-{
- u32 val = MDIO_ACC_REQUEST |
- ((phy_addr & MDIO_ACC_ADDR_MASK) << MDIO_ACC_ADDR_OFFSET) |
- ((phy_reg & MDIO_ACC_REG_MASK) << MDIO_ACC_REG_OFFSET) |
- phy_data;
-
- while (readl(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_REQUEST);
- writel(val, IFXMIPS_PPE32_MDIO_ACC);
-}
-
-unsigned short
-ifxmips_read_mdio (u32 phy_addr, u32 phy_reg)
-{
- u32 val = MDIO_ACC_REQUEST | MDIO_ACC_READ |
- ((phy_addr & MDIO_ACC_ADDR_MASK) << MDIO_ACC_ADDR_OFFSET) |
- ((phy_reg & MDIO_ACC_REG_MASK) << MDIO_ACC_REG_OFFSET);
-
- writel(val, IFXMIPS_PPE32_MDIO_ACC);
- while (readl(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_REQUEST){};
- val = readl(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_VAL_MASK;
-
- return val;
-}
-
-int
-ifxmips_switch_open (struct net_device *dev)
-{
- struct switch_priv* priv = (struct switch_priv*)dev->priv;
- struct dma_device_info* dma_dev = priv->dma_device;
- int i;
-
- for (i = 0; i < dma_dev->max_rx_chan_num; i++)
- {
- if ((dma_dev->rx_chan[i])->control == IFXMIPS_DMA_CH_ON)
- (dma_dev->rx_chan[i])->open(dma_dev->rx_chan[i]);
- }
-
- netif_start_queue(dev);
-
- return 0;
-}
-
-int
-switch_release (struct net_device *dev){
- struct switch_priv* priv = (struct switch_priv*)dev->priv;
- struct dma_device_info* dma_dev = priv->dma_device;
- int i;
-
- for (i = 0; i < dma_dev->max_rx_chan_num; i++)
- dma_dev->rx_chan[i]->close(dma_dev->rx_chan[i]);
-
- netif_stop_queue(dev);
-
- return 0;
-}
-
-int
-switch_hw_receive (struct net_device* dev,struct dma_device_info* dma_dev)
-{
- struct switch_priv *priv = (struct switch_priv*)dev->priv;
- unsigned char* buf = NULL;
- struct sk_buff *skb = NULL;
- int len = 0;
-
- len = dma_device_read(dma_dev, &buf, (void**)&skb);
-
- if (len >= ETHERNET_PACKET_DMA_BUFFER_SIZE)
- {
- printk("packet too large %d\n",len);
- goto switch_hw_receive_err_exit;
- }
-
- /* remove CRC */
- len -= 4;
- if (skb == NULL )
- {
- printk("cannot restore pointer\n");
- goto switch_hw_receive_err_exit;
- }
-
- if (len > (skb->end - skb->tail))
- {
- printk("BUG, len:%d end:%p tail:%p\n", (len+4), skb->end, skb->tail);
- goto switch_hw_receive_err_exit;
- }
-
- skb_put(skb, len);
- skb->dev = dev;
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
-
- priv->stats.rx_packets++;
- priv->stats.rx_bytes += len;
-
- return 0;
-
-switch_hw_receive_err_exit:
- if (len == 0)
- {
- if(skb)
- dev_kfree_skb_any(skb);
- priv->stats.rx_errors++;
- priv->stats.rx_dropped++;
-
- return -EIO;
- } else {
- return len;
- }
-}
-
-int
-switch_hw_tx (char *buf, int len, struct net_device *dev)
-{
- int ret = 0;
- struct switch_priv *priv = dev->priv;
- struct dma_device_info* dma_dev = priv->dma_device;
-
- ret = dma_device_write(dma_dev, buf, len, priv->skb);
-
- return ret;
-}
-
-int
-switch_tx (struct sk_buff *skb, struct net_device *dev)
-{
- int len;
- char *data;
- struct switch_priv *priv = dev->priv;
- struct dma_device_info* dma_dev = priv->dma_device;
-
- len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
- data = skb->data;
- priv->skb = skb;
- dev->trans_start = jiffies;
- // TODO we got more than 1 dma channel, so we should do something intelligent
- // here to select one
- dma_dev->current_tx_chan = 0;
-
- wmb();
-
- if (switch_hw_tx(data, len, dev) != len)
- {
- dev_kfree_skb_any(skb);
- priv->stats.tx_errors++;
- priv->stats.tx_dropped++;
- } else {
- priv->stats.tx_packets++;
- priv->stats.tx_bytes+=len;
- }
-
- return 0;
-}
-
-void
-switch_tx_timeout (struct net_device *dev)
-{
- int i;
- struct switch_priv* priv = (struct switch_priv*)dev->priv;
-
- priv->stats.tx_errors++;
-
- for (i = 0; i < priv->dma_device->max_tx_chan_num; i++)
- {
- priv->dma_device->tx_chan[i]->disable_irq(priv->dma_device->tx_chan[i]);
- }
-
- netif_wake_queue(dev);
-
- return;
-}
-
-int
-dma_intr_handler (struct dma_device_info* dma_dev, int status)
-{
- int i;
-
- switch (status)
- {
- case RCV_INT:
- switch_hw_receive(&ifxmips_mii0_dev, dma_dev);
- break;
-
- case TX_BUF_FULL_INT:
- printk("tx buffer full\n");
- netif_stop_queue(&ifxmips_mii0_dev);
- for (i = 0; i < dma_dev->max_tx_chan_num; i++)
- {
- if ((dma_dev->tx_chan[i])->control==IFXMIPS_DMA_CH_ON)
- dma_dev->tx_chan[i]->enable_irq(dma_dev->tx_chan[i]);
- }
- break;
-
- case TRANSMIT_CPT_INT:
- for (i = 0; i < dma_dev->max_tx_chan_num; i++)
- dma_dev->tx_chan[i]->disable_irq(dma_dev->tx_chan[i]);
-
- netif_wake_queue(&ifxmips_mii0_dev);
- break;
- }
-
- return 0;
-}
-
-unsigned char*
-ifxmips_etop_dma_buffer_alloc (int len, int *byte_offset, void **opt)
-{
- unsigned char *buffer = NULL;
- struct sk_buff *skb = NULL;
-
- skb = dev_alloc_skb(ETHERNET_PACKET_DMA_BUFFER_SIZE);
- if (skb == NULL)
- return NULL;
-
- buffer = (unsigned char*)(skb->data);
- skb_reserve(skb, 2);
- *(int*)opt = (int)skb;
- *byte_offset = 2;
-
- return buffer;
-}
-
-void
-ifxmips_etop_dma_buffer_free (unsigned char *dataptr, void *opt)
-{
- struct sk_buff *skb = NULL;
-
- if(opt == NULL)
- {
- kfree(dataptr);
- } else {
- skb = (struct sk_buff*)opt;
- dev_kfree_skb_any(skb);
- }
-}
-
-static struct net_device_stats*
-ifxmips_get_stats (struct net_device *dev)
-{
- return (struct net_device_stats *)dev->priv;
-}
-
-static int
-switch_init (struct net_device *dev)
-{
- u64 retval = 0;
- int i;
- struct switch_priv *priv;
-
- ether_setup(dev);
-
- printk("%s up\n", dev->name);
-
- dev->open = ifxmips_switch_open;
- dev->stop = switch_release;
- dev->hard_start_xmit = switch_tx;
- dev->get_stats = ifxmips_get_stats;
- dev->tx_timeout = switch_tx_timeout;
- dev->watchdog_timeo = 10 * HZ;
- dev->priv = kmalloc(sizeof(struct switch_priv), GFP_KERNEL);
-
- if (dev->priv == NULL)
- return -ENOMEM;
-
- memset(dev->priv, 0, sizeof(struct switch_priv));
- priv = dev->priv;
-
- priv->dma_device = dma_device_reserve("PPE");
-
- if (!priv->dma_device){
- BUG();
- return -ENODEV;
- }
-
- priv->dma_device->buffer_alloc = &ifxmips_etop_dma_buffer_alloc;
- priv->dma_device->buffer_free = &ifxmips_etop_dma_buffer_free;
- priv->dma_device->intr_handler = &dma_intr_handler;
- priv->dma_device->max_rx_chan_num = 4;
-
- for (i = 0; i < priv->dma_device->max_rx_chan_num; i++)
- {
- priv->dma_device->rx_chan[i]->packet_size = ETHERNET_PACKET_DMA_BUFFER_SIZE;
- priv->dma_device->rx_chan[i]->control = IFXMIPS_DMA_CH_ON;
- }
-
- for (i = 0; i < priv->dma_device->max_tx_chan_num; i++)
- {
- if(i == 0)
- priv->dma_device->tx_chan[i]->control = IFXMIPS_DMA_CH_ON;
- else
- priv->dma_device->tx_chan[i]->control = IFXMIPS_DMA_CH_OFF;
- }
-
- dma_device_register(priv->dma_device);
-
- /*read the mac address from the mac table and put them into the mac table.*/
- for (i = 0; i < 6; i++)
- {
- retval += u_boot_ethaddr[i];
- }
-
- //TODO
- /* ethaddr not set in u-boot ? */
- if (retval == 0)
- {
- printk("use default MAC address\n");
- dev->dev_addr[0] = 0x00;
- dev->dev_addr[1] = 0x11;
- dev->dev_addr[2] = 0x22;
- dev->dev_addr[3] = 0x33;
- dev->dev_addr[4] = 0x44;
- dev->dev_addr[5] = 0x55;
- } else {
- for (i = 0; i < 6; i++)
- dev->dev_addr[i] = u_boot_ethaddr[i];
- }
-
- return 0;
-}
-
-static void
-ifxmips_sw_chip_init (int mode)
-{
- ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_DMA);
- ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_PPE);
-
- if(mode == REV_MII_MODE)
- writel((readl(IFXMIPS_PPE32_CFG) & PPE32_MII_MASK) | PPE32_MII_REVERSE, IFXMIPS_PPE32_CFG);
- else if(mode == MII_MODE)
- writel((readl(IFXMIPS_PPE32_CFG) & PPE32_MII_MASK) | PPE32_MII_NORMAL, IFXMIPS_PPE32_CFG);
-
- writel(PPE32_PLEN_UNDER | PPE32_PLEN_OVER, IFXMIPS_PPE32_IG_PLEN_CTRL);
-
- writel(PPE32_CGEN, IFXMIPS_PPE32_ENET_MAC_CFG);
-
- wmb();
-}
-
-int __init
-switch_init_module(void)
-{
- int result = 0;
-
- ifxmips_mii0_dev.init = switch_init;
-
- strcpy(ifxmips_mii0_dev.name, "eth%d");
- SET_MODULE_OWNER(dev);
-
- result = register_netdev(&ifxmips_mii0_dev);
- if (result)
- {
- printk("error %i registering device \"%s\"\n", result, ifxmips_mii0_dev.name);
- goto out;
- }
-
- /* ifxmips eval kit connects the phy/switch in REV mode */
- ifxmips_sw_chip_init(REV_MII_MODE);
- printk("ifxmips MAC driver loaded!\n");
-
-out:
- return result;
-}
-
-static void __exit
-switch_cleanup(void)
-{
- struct switch_priv *priv = (struct switch_priv*)ifxmips_mii0_dev.priv;
-
- printk("ifxmips_mii0 cleanup\n");
-
- dma_device_unregister(priv->dma_device);
- dma_device_release(priv->dma_device);
- kfree(priv->dma_device);
- kfree(ifxmips_mii0_dev.priv);
- unregister_netdev(&ifxmips_mii0_dev);
-
- return;
-}
-
-module_init(switch_init_module);
-module_exit(switch_cleanup);
--- /dev/null
+/*
+ * drivers/net/ifxmips_mii0.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) 2005 Infineon
+ *
+ * Rewrite of Infineon IFXMips code, thanks to infineon for the support,
+ * software and hardware
+ *
+ * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <asm/uaccess.h>
+#include <linux/in.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/skbuff.h>
+#include <linux/mm.h>
+#include <linux/ethtool.h>
+#include <asm/checksum.h>
+#include <linux/init.h>
+#include <asm/delay.h>
+#include <asm/ifxmips/ifxmips.h>
+#include <asm/ifxmips/ifxmips_mii0.h>
+#include <asm/ifxmips/ifxmips_dma.h>
+#include <asm/ifxmips/ifxmips_pmu.h>
+
+static struct net_device ifxmips_mii0_dev;
+static unsigned char u_boot_ethaddr[MAX_ADDR_LEN];
+
+void
+ifxmips_write_mdio (u32 phy_addr, u32 phy_reg, u16 phy_data)
+{
+ u32 val = MDIO_ACC_REQUEST |
+ ((phy_addr & MDIO_ACC_ADDR_MASK) << MDIO_ACC_ADDR_OFFSET) |
+ ((phy_reg & MDIO_ACC_REG_MASK) << MDIO_ACC_REG_OFFSET) |
+ phy_data;
+
+ while (readl(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_REQUEST);
+ writel(val, IFXMIPS_PPE32_MDIO_ACC);
+}
+
+unsigned short
+ifxmips_read_mdio (u32 phy_addr, u32 phy_reg)
+{
+ u32 val = MDIO_ACC_REQUEST | MDIO_ACC_READ |
+ ((phy_addr & MDIO_ACC_ADDR_MASK) << MDIO_ACC_ADDR_OFFSET) |
+ ((phy_reg & MDIO_ACC_REG_MASK) << MDIO_ACC_REG_OFFSET);
+
+ writel(val, IFXMIPS_PPE32_MDIO_ACC);
+ while (readl(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_REQUEST){};
+ val = readl(IFXMIPS_PPE32_MDIO_ACC) & MDIO_ACC_VAL_MASK;
+
+ return val;
+}
+
+int
+ifxmips_switch_open (struct net_device *dev)
+{
+ struct switch_priv* priv = (struct switch_priv*)dev->priv;
+ struct dma_device_info* dma_dev = priv->dma_device;
+ int i;
+
+ for (i = 0; i < dma_dev->max_rx_chan_num; i++)
+ {
+ if ((dma_dev->rx_chan[i])->control == IFXMIPS_DMA_CH_ON)
+ (dma_dev->rx_chan[i])->open(dma_dev->rx_chan[i]);
+ }
+
+ netif_start_queue(dev);
+
+ return 0;
+}
+
+int
+switch_release (struct net_device *dev){
+ struct switch_priv* priv = (struct switch_priv*)dev->priv;
+ struct dma_device_info* dma_dev = priv->dma_device;
+ int i;
+
+ for (i = 0; i < dma_dev->max_rx_chan_num; i++)
+ dma_dev->rx_chan[i]->close(dma_dev->rx_chan[i]);
+
+ netif_stop_queue(dev);
+
+ return 0;
+}
+
+int
+switch_hw_receive (struct net_device* dev,struct dma_device_info* dma_dev)
+{
+ struct switch_priv *priv = (struct switch_priv*)dev->priv;
+ unsigned char* buf = NULL;
+ struct sk_buff *skb = NULL;
+ int len = 0;
+
+ len = dma_device_read(dma_dev, &buf, (void**)&skb);
+
+ if (len >= ETHERNET_PACKET_DMA_BUFFER_SIZE)
+ {
+ printk("packet too large %d\n",len);
+ goto switch_hw_receive_err_exit;
+ }
+
+ /* remove CRC */
+ len -= 4;
+ if (skb == NULL )
+ {
+ printk("cannot restore pointer\n");
+ goto switch_hw_receive_err_exit;
+ }
+
+ if (len > (skb->end - skb->tail))
+ {
+ printk("BUG, len:%d end:%p tail:%p\n", (len+4), skb->end, skb->tail);
+ goto switch_hw_receive_err_exit;
+ }
+
+ skb_put(skb, len);
+ skb->dev = dev;
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb);
+
+ priv->stats.rx_packets++;
+ priv->stats.rx_bytes += len;
+
+ return 0;
+
+switch_hw_receive_err_exit:
+ if (len == 0)
+ {
+ if(skb)
+ dev_kfree_skb_any(skb);
+ priv->stats.rx_errors++;
+ priv->stats.rx_dropped++;
+
+ return -EIO;
+ } else {
+ return len;
+ }
+}
+
+int
+switch_hw_tx (char *buf, int len, struct net_device *dev)
+{
+ int ret = 0;
+ struct switch_priv *priv = dev->priv;
+ struct dma_device_info* dma_dev = priv->dma_device;
+
+ ret = dma_device_write(dma_dev, buf, len, priv->skb);
+
+ return ret;
+}
+
+int
+switch_tx (struct sk_buff *skb, struct net_device *dev)
+{
+ int len;
+ char *data;
+ struct switch_priv *priv = dev->priv;
+ struct dma_device_info* dma_dev = priv->dma_device;
+
+ len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
+ data = skb->data;
+ priv->skb = skb;
+ dev->trans_start = jiffies;
+ // TODO we got more than 1 dma channel, so we should do something intelligent
+ // here to select one
+ dma_dev->current_tx_chan = 0;
+
+ wmb();
+
+ if (switch_hw_tx(data, len, dev) != len)
+ {
+ dev_kfree_skb_any(skb);
+ priv->stats.tx_errors++;
+ priv->stats.tx_dropped++;
+ } else {
+ priv->stats.tx_packets++;
+ priv->stats.tx_bytes+=len;
+ }
+
+ return 0;
+}
+
+void
+switch_tx_timeout (struct net_device *dev)
+{
+ int i;
+ struct switch_priv* priv = (struct switch_priv*)dev->priv;
+
+ priv->stats.tx_errors++;
+
+ for (i = 0; i < priv->dma_device->max_tx_chan_num; i++)
+ {
+ priv->dma_device->tx_chan[i]->disable_irq(priv->dma_device->tx_chan[i]);
+ }
+
+ netif_wake_queue(dev);
+
+ return;
+}
+
+int
+dma_intr_handler (struct dma_device_info* dma_dev, int status)
+{
+ int i;
+
+ switch (status)
+ {
+ case RCV_INT:
+ switch_hw_receive(&ifxmips_mii0_dev, dma_dev);
+ break;
+
+ case TX_BUF_FULL_INT:
+ printk("tx buffer full\n");
+ netif_stop_queue(&ifxmips_mii0_dev);
+ for (i = 0; i < dma_dev->max_tx_chan_num; i++)
+ {
+ if ((dma_dev->tx_chan[i])->control==IFXMIPS_DMA_CH_ON)
+ dma_dev->tx_chan[i]->enable_irq(dma_dev->tx_chan[i]);
+ }
+ break;
+
+ case TRANSMIT_CPT_INT:
+ for (i = 0; i < dma_dev->max_tx_chan_num; i++)
+ dma_dev->tx_chan[i]->disable_irq(dma_dev->tx_chan[i]);
+
+ netif_wake_queue(&ifxmips_mii0_dev);
+ break;
+ }
+
+ return 0;
+}
+
+unsigned char*
+ifxmips_etop_dma_buffer_alloc (int len, int *byte_offset, void **opt)
+{
+ unsigned char *buffer = NULL;
+ struct sk_buff *skb = NULL;
+
+ skb = dev_alloc_skb(ETHERNET_PACKET_DMA_BUFFER_SIZE);
+ if (skb == NULL)
+ return NULL;
+
+ buffer = (unsigned char*)(skb->data);
+ skb_reserve(skb, 2);
+ *(int*)opt = (int)skb;
+ *byte_offset = 2;
+
+ return buffer;
+}
+
+void
+ifxmips_etop_dma_buffer_free (unsigned char *dataptr, void *opt)
+{
+ struct sk_buff *skb = NULL;
+
+ if(opt == NULL)
+ {
+ kfree(dataptr);
+ } else {
+ skb = (struct sk_buff*)opt;
+ dev_kfree_skb_any(skb);
+ }
+}
+
+static struct net_device_stats*
+ifxmips_get_stats (struct net_device *dev)
+{
+ return (struct net_device_stats *)dev->priv;
+}
+
+static int
+switch_init (struct net_device *dev)
+{
+ u64 retval = 0;
+ int i;
+ struct switch_priv *priv;
+
+ ether_setup(dev);
+
+ printk("%s up\n", dev->name);
+
+ dev->open = ifxmips_switch_open;
+ dev->stop = switch_release;
+ dev->hard_start_xmit = switch_tx;
+ dev->get_stats = ifxmips_get_stats;
+ dev->tx_timeout = switch_tx_timeout;
+ dev->watchdog_timeo = 10 * HZ;
+ dev->priv = kmalloc(sizeof(struct switch_priv), GFP_KERNEL);
+
+ if (dev->priv == NULL)
+ return -ENOMEM;
+
+ memset(dev->priv, 0, sizeof(struct switch_priv));
+ priv = dev->priv;
+
+ priv->dma_device = dma_device_reserve("PPE");
+
+ if (!priv->dma_device){
+ BUG();
+ return -ENODEV;
+ }
+
+ priv->dma_device->buffer_alloc = &ifxmips_etop_dma_buffer_alloc;
+ priv->dma_device->buffer_free = &ifxmips_etop_dma_buffer_free;
+ priv->dma_device->intr_handler = &dma_intr_handler;
+ priv->dma_device->max_rx_chan_num = 4;
+
+ for (i = 0; i < priv->dma_device->max_rx_chan_num; i++)
+ {
+ priv->dma_device->rx_chan[i]->packet_size = ETHERNET_PACKET_DMA_BUFFER_SIZE;
+ priv->dma_device->rx_chan[i]->control = IFXMIPS_DMA_CH_ON;
+ }
+
+ for (i = 0; i < priv->dma_device->max_tx_chan_num; i++)
+ {
+ if(i == 0)
+ priv->dma_device->tx_chan[i]->control = IFXMIPS_DMA_CH_ON;
+ else
+ priv->dma_device->tx_chan[i]->control = IFXMIPS_DMA_CH_OFF;
+ }
+
+ dma_device_register(priv->dma_device);
+
+ /*read the mac address from the mac table and put them into the mac table.*/
+ for (i = 0; i < 6; i++)
+ {
+ retval += u_boot_ethaddr[i];
+ }
+
+ //TODO
+ /* ethaddr not set in u-boot ? */
+ if (retval == 0)
+ {
+ printk("use default MAC address\n");
+ dev->dev_addr[0] = 0x00;
+ dev->dev_addr[1] = 0x11;
+ dev->dev_addr[2] = 0x22;
+ dev->dev_addr[3] = 0x33;
+ dev->dev_addr[4] = 0x44;
+ dev->dev_addr[5] = 0x55;
+ } else {
+ for (i = 0; i < 6; i++)
+ dev->dev_addr[i] = u_boot_ethaddr[i];
+ }
+
+ return 0;
+}
+
+static void
+ifxmips_sw_chip_init (int mode)
+{
+ ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_DMA);
+ ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_PPE);
+
+ if(mode == REV_MII_MODE)
+ writel((readl(IFXMIPS_PPE32_CFG) & PPE32_MII_MASK) | PPE32_MII_REVERSE, IFXMIPS_PPE32_CFG);
+ else if(mode == MII_MODE)
+ writel((readl(IFXMIPS_PPE32_CFG) & PPE32_MII_MASK) | PPE32_MII_NORMAL, IFXMIPS_PPE32_CFG);
+
+ writel(PPE32_PLEN_UNDER | PPE32_PLEN_OVER, IFXMIPS_PPE32_IG_PLEN_CTRL);
+
+ writel(PPE32_CGEN, IFXMIPS_PPE32_ENET_MAC_CFG);
+
+ wmb();
+}
+
+int __init
+switch_init_module(void)
+{
+ int result = 0;
+
+ ifxmips_mii0_dev.init = switch_init;
+
+ strcpy(ifxmips_mii0_dev.name, "eth%d");
+ SET_MODULE_OWNER(dev);
+
+ result = register_netdev(&ifxmips_mii0_dev);
+ if (result)
+ {
+ printk("error %i registering device \"%s\"\n", result, ifxmips_mii0_dev.name);
+ goto out;
+ }
+
+ /* ifxmips eval kit connects the phy/switch in REV mode */
+ ifxmips_sw_chip_init(REV_MII_MODE);
+ printk("ifxmips MAC driver loaded!\n");
+
+out:
+ return result;
+}
+
+static void __exit
+switch_cleanup(void)
+{
+ struct switch_priv *priv = (struct switch_priv*)ifxmips_mii0_dev.priv;
+
+ printk("ifxmips_mii0 cleanup\n");
+
+ dma_device_unregister(priv->dma_device);
+ dma_device_release(priv->dma_device);
+ kfree(priv->dma_device);
+ kfree(ifxmips_mii0_dev.priv);
+ unregister_netdev(&ifxmips_mii0_dev);
+
+ return;
+}
+
+module_init(switch_init_module);
+module_exit(switch_cleanup);
+++ /dev/null
-/*
- * Driver for IFXMIPSASC serial ports
- *
- * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Copyright (C) 2004 Infineon IFAP DC COM CPE
- * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org>
- * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
- */
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/major.h>
-#include <linux/string.h>
-#include <linux/fcntl.h>
-#include <linux/ptrace.h>
-#include <linux/ioport.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/circ_buf.h>
-#include <linux/serial.h>
-#include <linux/serial_core.h>
-#include <linux/console.h>
-#include <linux/sysrq.h>
-#include <linux/irq.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/bitops.h>
-#include <asm/ifxmips/ifxmips.h>
-#include <asm/ifxmips/ifxmips_irq.h>
-#include <asm/ifxmips/ifxmips_serial.h>
-
-#define PORT_IFXMIPSASC 111
-
-#include <linux/serial_core.h>
-
-#define UART_DUMMY_UER_RX 1
-
-static void ifxmipsasc_tx_chars(struct uart_port *port);
-extern void prom_printf(const char * fmt, ...);
-static struct uart_port ifxmipsasc_port;
-static struct uart_driver ifxmipsasc_reg;
-static unsigned int uartclk = 0;
-extern unsigned int ifxmips_get_fpi_hz(void);
-
-static void
-ifxmipsasc_stop_tx (struct uart_port *port)
-{
- /* fifo underrun shuts up after firing once */
- return;
-}
-
-static void
-ifxmipsasc_start_tx (struct uart_port *port)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- ifxmipsasc_tx_chars(port);
- local_irq_restore(flags);
-
- return;
-}
-
-static void
-ifxmipsasc_stop_rx (struct uart_port *port)
-{
- /* clear the RX enable bit */
- writel(ASCWHBSTATE_CLRREN, IFXMIPS_ASC1_WHBSTATE);
-}
-
-static void
-ifxmipsasc_enable_ms (struct uart_port *port)
-{
- /* no modem signals */
- return;
-}
-
-static void
-ifxmipsasc_rx_chars (struct uart_port *port)
-{
- struct tty_struct *tty = port->info->tty;
- unsigned int ch = 0, rsr = 0, fifocnt;
-
- fifocnt = readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_RXFFLMASK;
- while (fifocnt--)
- {
- u8 flag = TTY_NORMAL;
- ch = readl(IFXMIPS_ASC1_RBUF);
- rsr = (readl(IFXMIPS_ASC1_STATE) & ASCSTATE_ANY) | UART_DUMMY_UER_RX;
- tty_flip_buffer_push(tty);
- port->icount.rx++;
-
- /*
- * Note that the error handling code is
- * out of the main execution path
- */
- if (rsr & ASCSTATE_ANY) {
- if (rsr & ASCSTATE_PE) {
- port->icount.parity++;
- writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRPE, IFXMIPS_ASC1_WHBSTATE);
- } else if (rsr & ASCSTATE_FE) {
- port->icount.frame++;
- writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRFE, IFXMIPS_ASC1_WHBSTATE);
- }
- if (rsr & ASCSTATE_ROE) {
- port->icount.overrun++;
- writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRROE, IFXMIPS_ASC1_WHBSTATE);
- }
-
- rsr &= port->read_status_mask;
-
- if (rsr & ASCSTATE_PE)
- flag = TTY_PARITY;
- else if (rsr & ASCSTATE_FE)
- flag = TTY_FRAME;
- }
-
- if ((rsr & port->ignore_status_mask) == 0)
- tty_insert_flip_char(tty, ch, flag);
-
- if (rsr & ASCSTATE_ROE)
- /*
- * Overrun is special, since it's reported
- * immediately, and doesn't affect the current
- * character
- */
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
- }
- if (ch != 0)
- tty_flip_buffer_push(tty);
-
- return;
-}
-
-
-static void
-ifxmipsasc_tx_chars (struct uart_port *port)
-{
- struct circ_buf *xmit = &port->info->xmit;
-
- if (uart_tx_stopped(port)) {
- ifxmipsasc_stop_tx(port);
- return;
- }
-
- while(((readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
- >> ASCFSTAT_TXFFLOFF) != IFXMIPSASC_TXFIFO_FULL)
- {
- if (port->x_char) {
- writel(port->x_char, IFXMIPS_ASC1_TBUF);
- port->icount.tx++;
- port->x_char = 0;
- continue;
- }
-
- if (uart_circ_empty(xmit))
- break;
-
- writel(port->info->xmit.buf[port->info->xmit.tail], IFXMIPS_ASC1_TBUF);
- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
- port->icount.tx++;
- }
-
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(port);
-}
-
-static irqreturn_t
-ifxmipsasc_tx_int (int irq, void *port)
-{
- writel(ASC_IRNCR_TIR, IFXMIPS_ASC1_IRNCR);
- ifxmipsasc_start_tx(port);
- mask_and_ack_ifxmips_irq(irq);
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t
-ifxmipsasc_er_int (int irq, void *port)
-{
- /* clear any pending interrupts */
- writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRPE |
- ASCWHBSTATE_CLRFE | ASCWHBSTATE_CLRROE, IFXMIPS_ASC1_WHBSTATE);
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t
-ifxmipsasc_rx_int (int irq, void *port)
-{
- writel(ASC_IRNCR_RIR, IFXMIPS_ASC1_IRNCR);
- ifxmipsasc_rx_chars((struct uart_port *) port);
- mask_and_ack_ifxmips_irq(irq);
-
- return IRQ_HANDLED;
-}
-
-static unsigned int
-ifxmipsasc_tx_empty (struct uart_port *port)
-{
- int status;
-
- status = readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK;
-
- return status ? 0 : TIOCSER_TEMT;
-}
-
-static unsigned int
-ifxmipsasc_get_mctrl (struct uart_port *port)
-{
- return TIOCM_CTS | TIOCM_CAR | TIOCM_DSR;
-}
-
-static void
-ifxmipsasc_set_mctrl (struct uart_port *port, u_int mctrl)
-{
- return;
-}
-
-static void
-ifxmipsasc_break_ctl (struct uart_port *port, int break_state)
-{
- return;
-}
-
-static void
-ifxmipsasc1_hw_init (void)
-{
- /* this setup was probably already done in ROM/u-boot but we do it again*/
- /* TODO: GPIO pins are multifunction */
- writel(readl(IFXMIPS_ASC1_CLC) & ~IFXMIPS_ASC1_CLC_DISS, IFXMIPS_ASC1_CLC);
- writel((readl(IFXMIPS_ASC1_CLC) & ~ASCCLC_RMCMASK) | (1 << ASCCLC_RMCOFFSET), IFXMIPS_ASC1_CLC);
- writel(0, IFXMIPS_ASC1_PISEL);
- writel(((IFXMIPSASC_TXFIFO_FL << ASCTXFCON_TXFITLOFF) &
- ASCTXFCON_TXFITLMASK) | ASCTXFCON_TXFEN | ASCTXFCON_TXFFLU, IFXMIPS_ASC1_TXFCON);
- writel(((IFXMIPSASC_RXFIFO_FL << ASCRXFCON_RXFITLOFF) &
- ASCRXFCON_RXFITLMASK) | ASCRXFCON_RXFEN | ASCRXFCON_RXFFLU, IFXMIPS_ASC1_RXFCON);
- wmb ();
-
- /*framing, overrun, enable */
- writel(readl(IFXMIPS_ASC1_CON) | ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_TOEN | ASCCON_ROEN,
- IFXMIPS_ASC1_CON);
-}
-
-static int
-ifxmipsasc_startup (struct uart_port *port)
-{
- unsigned long flags;
- int retval;
-
- /* this assumes: CON.BRS = CON.FDE = 0 */
- if (uartclk == 0)
- uartclk = ifxmips_get_fpi_hz();
-
- ifxmipsasc_port.uartclk = uartclk;
-
- ifxmipsasc1_hw_init();
-
- local_irq_save(flags);
-
- retval = request_irq(IFXMIPSASC1_RIR, ifxmipsasc_rx_int, IRQF_DISABLED, "asc_rx", port);
- if (retval){
- printk("failed to request ifxmipsasc_rx_int\n");
- return retval;
- }
-
- retval = request_irq(IFXMIPSASC1_TIR, ifxmipsasc_tx_int, IRQF_DISABLED, "asc_tx", port);
- if (retval){
- printk("failed to request ifxmipsasc_tx_int\n");
- goto err1;
- }
-
- retval = request_irq(IFXMIPSASC1_EIR, ifxmipsasc_er_int, IRQF_DISABLED, "asc_er", port);
- if (retval){
- printk("failed to request ifxmipsasc_er_int\n");
- goto err2;
- }
-
- writel(ASC_IRNREN_RX_BUF | ASC_IRNREN_TX_BUF | ASC_IRNREN_ERR | ASC_IRNREN_TX,
- IFXMIPS_ASC1_IRNREN);
-
- local_irq_restore(flags);
-
- return 0;
-
-err2:
- free_irq(IFXMIPSASC1_TIR, port);
-
-err1:
- free_irq(IFXMIPSASC1_RIR, port);
- local_irq_restore(flags);
-
- return retval;
-}
-
-static void
-ifxmipsasc_shutdown (struct uart_port *port)
-{
- free_irq(IFXMIPSASC1_RIR, port);
- free_irq(IFXMIPSASC1_TIR, port);
- free_irq(IFXMIPSASC1_EIR, port);
- /*
- * disable the baudrate generator to disable the ASC
- */
- writel(0, IFXMIPS_ASC1_CON);
-
- /* flush and then disable the fifos */
- writel(readl(IFXMIPS_ASC1_RXFCON) | ASCRXFCON_RXFFLU, IFXMIPS_ASC1_RXFCON);
- writel(readl(IFXMIPS_ASC1_RXFCON) & ~ASCRXFCON_RXFEN, IFXMIPS_ASC1_RXFCON);
- writel(readl(IFXMIPS_ASC1_TXFCON) | ASCTXFCON_TXFFLU, IFXMIPS_ASC1_TXFCON);
- writel(readl(IFXMIPS_ASC1_TXFCON) & ~ASCTXFCON_TXFEN, IFXMIPS_ASC1_TXFCON);
-}
-
-static void ifxmipsasc_set_termios(struct uart_port *port, struct ktermios *new, struct ktermios *old)
-{
- unsigned int cflag;
- unsigned int iflag;
- unsigned int quot;
- unsigned int baud;
- unsigned int con = 0;
- unsigned long flags;
-
- cflag = new->c_cflag;
- iflag = new->c_iflag;
-
- /* byte size and parity */
- switch (cflag & CSIZE) {
- case CS7:
- con = ASCCON_M_7ASYNC;
- break;
-
- case CS5:
- case CS6:
- default:
- con = ASCCON_M_8ASYNC;
- break;
- }
-
- if (cflag & CSTOPB)
- con |= ASCCON_STP;
-
- if (cflag & PARENB) {
- if (!(cflag & PARODD))
- con &= ~ASCCON_ODD;
- else
- con |= ASCCON_ODD;
- }
-
- port->read_status_mask = ASCSTATE_ROE;
- if (iflag & INPCK)
- port->read_status_mask |= ASCSTATE_FE | ASCSTATE_PE;
-
- port->ignore_status_mask = 0;
- if (iflag & IGNPAR)
- port->ignore_status_mask |= ASCSTATE_FE | ASCSTATE_PE;
-
- if (iflag & IGNBRK) {
- /*
- * If we're ignoring parity and break indicators,
- * ignore overruns too (for real raw support).
- */
- if (iflag & IGNPAR)
- port->ignore_status_mask |= ASCSTATE_ROE;
- }
-
- if ((cflag & CREAD) == 0)
- port->ignore_status_mask |= UART_DUMMY_UER_RX;
-
- /* set error signals - framing, parity and overrun, enable receiver */
- con |= ASCCON_FEN | ASCCON_TOEN | ASCCON_ROEN;
-
- local_irq_save(flags);
-
- /* set up CON */
- writel(readl(IFXMIPS_ASC1_CON) | con, IFXMIPS_ASC1_CON);
-
- /* Set baud rate - take a divider of 2 into account */
- baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);
- quot = uart_get_divisor(port, baud);
- quot = quot / 2 - 1;
-
- /* disable the baudrate generator */
- writel(readl(IFXMIPS_ASC1_CON) & ~ASCCON_R, IFXMIPS_ASC1_CON);
-
- /* make sure the fractional divider is off */
- writel(readl(IFXMIPS_ASC1_CON) & ~ASCCON_FDE, IFXMIPS_ASC1_CON);
-
- /* set up to use divisor of 2 */
- writel(readl(IFXMIPS_ASC1_CON) & ~ASCCON_BRS, IFXMIPS_ASC1_CON);
-
- /* now we can write the new baudrate into the register */
- writel(quot, IFXMIPS_ASC1_BG);
-
- /* turn the baudrate generator back on */
- writel(readl(IFXMIPS_ASC1_CON) | ASCCON_R, IFXMIPS_ASC1_CON);
-
- /* enable rx */
- writel(ASCWHBSTATE_SETREN, IFXMIPS_ASC1_WHBSTATE);
-
- local_irq_restore(flags);
-}
-
-static const char*
-ifxmipsasc_type (struct uart_port *port)
-{
- return port->type == PORT_IFXMIPSASC ? "IFXMIPSASC" : NULL;
-}
-
-static void
-ifxmipsasc_release_port (struct uart_port *port)
-{
- return;
-}
-
-static int
-ifxmipsasc_request_port (struct uart_port *port)
-{
- return 0;
-}
-
-static void
-ifxmipsasc_config_port (struct uart_port *port, int flags)
-{
- if (flags & UART_CONFIG_TYPE) {
- port->type = PORT_IFXMIPSASC;
- ifxmipsasc_request_port(port);
- }
-}
-
-static int
-ifxmipsasc_verify_port (struct uart_port *port, struct serial_struct *ser)
-{
- int ret = 0;
- if (ser->type != PORT_UNKNOWN && ser->type != PORT_IFXMIPSASC)
- ret = -EINVAL;
- if (ser->irq < 0 || ser->irq >= NR_IRQS)
- ret = -EINVAL;
- if (ser->baud_base < 9600)
- ret = -EINVAL;
- return ret;
-}
-
-static struct uart_ops ifxmipsasc_pops = {
- .tx_empty = ifxmipsasc_tx_empty,
- .set_mctrl = ifxmipsasc_set_mctrl,
- .get_mctrl = ifxmipsasc_get_mctrl,
- .stop_tx = ifxmipsasc_stop_tx,
- .start_tx = ifxmipsasc_start_tx,
- .stop_rx = ifxmipsasc_stop_rx,
- .enable_ms = ifxmipsasc_enable_ms,
- .break_ctl = ifxmipsasc_break_ctl,
- .startup = ifxmipsasc_startup,
- .shutdown = ifxmipsasc_shutdown,
- .set_termios = ifxmipsasc_set_termios,
- .type = ifxmipsasc_type,
- .release_port = ifxmipsasc_release_port,
- .request_port = ifxmipsasc_request_port,
- .config_port = ifxmipsasc_config_port,
- .verify_port = ifxmipsasc_verify_port,
-};
-
-static struct uart_port ifxmipsasc_port = {
- membase: (void *)IFXMIPS_ASC1_BASE_ADDR,
- mapbase: IFXMIPS_ASC1_BASE_ADDR,
- iotype: SERIAL_IO_MEM,
- irq: IFXMIPSASC1_RIR,
- uartclk: 0,
- fifosize: 16,
- unused: {IFXMIPSASC1_TIR, IFXMIPSASC1_EIR},
- type: PORT_IFXMIPSASC,
- ops: &ifxmipsasc_pops,
- flags: ASYNC_BOOT_AUTOCONF,
-};
-
-static void
-ifxmipsasc_console_write (struct console *co, const char *s, u_int count)
-{
- int i, fifocnt;
- unsigned long flags;
-
- local_irq_save(flags);
- for (i = 0; i < count; i++)
- {
- /* wait until the FIFO is not full */
- do
- {
- fifocnt = (readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
- >> ASCFSTAT_TXFFLOFF;
- } while (fifocnt == IFXMIPSASC_TXFIFO_FULL);
-
- if (s[i] == '\0')
- {
- break;
- }
-
- if (s[i] == '\n')
- {
- writel('\r', IFXMIPS_ASC1_TBUF);
- do
- {
- fifocnt = (readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
- >> ASCFSTAT_TXFFLOFF;
- } while (fifocnt == IFXMIPSASC_TXFIFO_FULL);
- }
- writel(s[i], IFXMIPS_ASC1_TBUF);
- }
-
- local_irq_restore(flags);
-}
-
-static int __init
-ifxmipsasc_console_setup (struct console *co, char *options)
-{
- struct uart_port *port;
- int baud = 115200;
- int bits = 8;
- int parity = 'n';
- int flow = 'n';
-
- if (uartclk == 0)
- uartclk = ifxmips_get_fpi_hz();
- co->index = 0;
- port = &ifxmipsasc_port;
- ifxmipsasc_port.uartclk = uartclk;
- ifxmipsasc_port.type = PORT_IFXMIPSASC;
-
- if (options){
- uart_parse_options(options, &baud, &parity, &bits, &flow);
- }
-
- return uart_set_options(port, co, baud, parity, bits, flow);
-}
-
-static struct uart_driver ifxmipsasc_reg;
-static struct console ifxmipsasc_console = {
- name: "ttyS",
- write: ifxmipsasc_console_write,
- device: uart_console_device,
- setup: ifxmipsasc_console_setup,
- flags: CON_PRINTBUFFER,
- index: -1,
- data: &ifxmipsasc_reg,
-};
-
-static int __init
-ifxmipsasc_console_init (void)
-{
- register_console(&ifxmipsasc_console);
- return 0;
-}
-console_initcall(ifxmipsasc_console_init);
-
-static struct uart_driver ifxmipsasc_reg = {
- .owner = THIS_MODULE,
- .driver_name = "serial",
- .dev_name = "ttyS",
- .major = TTY_MAJOR,
- .minor = 64,
- .nr = 1,
- .cons = &ifxmipsasc_console,
-};
-
-static int __init
-ifxmipsasc_init (void)
-{
- unsigned char res;
-
- uart_register_driver(&ifxmipsasc_reg);
- res = uart_add_one_port(&ifxmipsasc_reg, &ifxmipsasc_port);
-
- return res;
-}
-
-static void __exit
-ifxmipsasc_exit (void)
-{
- uart_unregister_driver(&ifxmipsasc_reg);
-}
-
-module_init(ifxmipsasc_init);
-module_exit(ifxmipsasc_exit);
-
-MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
-MODULE_DESCRIPTION("MIPS IFXMips serial port driver");
-MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Driver for IFXMIPSASC serial ports
+ *
+ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Copyright (C) 2004 Infineon IFAP DC COM CPE
+ * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/circ_buf.h>
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+#include <linux/irq.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <asm/ifxmips/ifxmips.h>
+#include <asm/ifxmips/ifxmips_irq.h>
+#include <asm/ifxmips/ifxmips_serial.h>
+
+#define PORT_IFXMIPSASC 111
+
+#include <linux/serial_core.h>
+
+#define UART_DUMMY_UER_RX 1
+
+static void ifxmipsasc_tx_chars(struct uart_port *port);
+extern void prom_printf(const char * fmt, ...);
+static struct uart_port ifxmipsasc_port;
+static struct uart_driver ifxmipsasc_reg;
+static unsigned int uartclk = 0;
+extern unsigned int ifxmips_get_fpi_hz(void);
+
+static void
+ifxmipsasc_stop_tx (struct uart_port *port)
+{
+ /* fifo underrun shuts up after firing once */
+ return;
+}
+
+static void
+ifxmipsasc_start_tx (struct uart_port *port)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ ifxmipsasc_tx_chars(port);
+ local_irq_restore(flags);
+
+ return;
+}
+
+static void
+ifxmipsasc_stop_rx (struct uart_port *port)
+{
+ /* clear the RX enable bit */
+ writel(ASCWHBSTATE_CLRREN, IFXMIPS_ASC1_WHBSTATE);
+}
+
+static void
+ifxmipsasc_enable_ms (struct uart_port *port)
+{
+ /* no modem signals */
+ return;
+}
+
+static void
+ifxmipsasc_rx_chars (struct uart_port *port)
+{
+ struct tty_struct *tty = port->info->tty;
+ unsigned int ch = 0, rsr = 0, fifocnt;
+
+ fifocnt = readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_RXFFLMASK;
+ while (fifocnt--)
+ {
+ u8 flag = TTY_NORMAL;
+ ch = readl(IFXMIPS_ASC1_RBUF);
+ rsr = (readl(IFXMIPS_ASC1_STATE) & ASCSTATE_ANY) | UART_DUMMY_UER_RX;
+ tty_flip_buffer_push(tty);
+ port->icount.rx++;
+
+ /*
+ * Note that the error handling code is
+ * out of the main execution path
+ */
+ if (rsr & ASCSTATE_ANY) {
+ if (rsr & ASCSTATE_PE) {
+ port->icount.parity++;
+ writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRPE, IFXMIPS_ASC1_WHBSTATE);
+ } else if (rsr & ASCSTATE_FE) {
+ port->icount.frame++;
+ writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRFE, IFXMIPS_ASC1_WHBSTATE);
+ }
+ if (rsr & ASCSTATE_ROE) {
+ port->icount.overrun++;
+ writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRROE, IFXMIPS_ASC1_WHBSTATE);
+ }
+
+ rsr &= port->read_status_mask;
+
+ if (rsr & ASCSTATE_PE)
+ flag = TTY_PARITY;
+ else if (rsr & ASCSTATE_FE)
+ flag = TTY_FRAME;
+ }
+
+ if ((rsr & port->ignore_status_mask) == 0)
+ tty_insert_flip_char(tty, ch, flag);
+
+ if (rsr & ASCSTATE_ROE)
+ /*
+ * Overrun is special, since it's reported
+ * immediately, and doesn't affect the current
+ * character
+ */
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ }
+ if (ch != 0)
+ tty_flip_buffer_push(tty);
+
+ return;
+}
+
+
+static void
+ifxmipsasc_tx_chars (struct uart_port *port)
+{
+ struct circ_buf *xmit = &port->info->xmit;
+
+ if (uart_tx_stopped(port)) {
+ ifxmipsasc_stop_tx(port);
+ return;
+ }
+
+ while(((readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
+ >> ASCFSTAT_TXFFLOFF) != IFXMIPSASC_TXFIFO_FULL)
+ {
+ if (port->x_char) {
+ writel(port->x_char, IFXMIPS_ASC1_TBUF);
+ port->icount.tx++;
+ port->x_char = 0;
+ continue;
+ }
+
+ if (uart_circ_empty(xmit))
+ break;
+
+ writel(port->info->xmit.buf[port->info->xmit.tail], IFXMIPS_ASC1_TBUF);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ port->icount.tx++;
+ }
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(port);
+}
+
+static irqreturn_t
+ifxmipsasc_tx_int (int irq, void *port)
+{
+ writel(ASC_IRNCR_TIR, IFXMIPS_ASC1_IRNCR);
+ ifxmipsasc_start_tx(port);
+ mask_and_ack_ifxmips_irq(irq);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t
+ifxmipsasc_er_int (int irq, void *port)
+{
+ /* clear any pending interrupts */
+ writel(readl(IFXMIPS_ASC1_WHBSTATE) | ASCWHBSTATE_CLRPE |
+ ASCWHBSTATE_CLRFE | ASCWHBSTATE_CLRROE, IFXMIPS_ASC1_WHBSTATE);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t
+ifxmipsasc_rx_int (int irq, void *port)
+{
+ writel(ASC_IRNCR_RIR, IFXMIPS_ASC1_IRNCR);
+ ifxmipsasc_rx_chars((struct uart_port *) port);
+ mask_and_ack_ifxmips_irq(irq);
+
+ return IRQ_HANDLED;
+}
+
+static unsigned int
+ifxmipsasc_tx_empty (struct uart_port *port)
+{
+ int status;
+
+ status = readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK;
+
+ return status ? 0 : TIOCSER_TEMT;
+}
+
+static unsigned int
+ifxmipsasc_get_mctrl (struct uart_port *port)
+{
+ return TIOCM_CTS | TIOCM_CAR | TIOCM_DSR;
+}
+
+static void
+ifxmipsasc_set_mctrl (struct uart_port *port, u_int mctrl)
+{
+ return;
+}
+
+static void
+ifxmipsasc_break_ctl (struct uart_port *port, int break_state)
+{
+ return;
+}
+
+static void
+ifxmipsasc1_hw_init (void)
+{
+ /* this setup was probably already done in ROM/u-boot but we do it again*/
+ /* TODO: GPIO pins are multifunction */
+ writel(readl(IFXMIPS_ASC1_CLC) & ~IFXMIPS_ASC1_CLC_DISS, IFXMIPS_ASC1_CLC);
+ writel((readl(IFXMIPS_ASC1_CLC) & ~ASCCLC_RMCMASK) | (1 << ASCCLC_RMCOFFSET), IFXMIPS_ASC1_CLC);
+ writel(0, IFXMIPS_ASC1_PISEL);
+ writel(((IFXMIPSASC_TXFIFO_FL << ASCTXFCON_TXFITLOFF) &
+ ASCTXFCON_TXFITLMASK) | ASCTXFCON_TXFEN | ASCTXFCON_TXFFLU, IFXMIPS_ASC1_TXFCON);
+ writel(((IFXMIPSASC_RXFIFO_FL << ASCRXFCON_RXFITLOFF) &
+ ASCRXFCON_RXFITLMASK) | ASCRXFCON_RXFEN | ASCRXFCON_RXFFLU, IFXMIPS_ASC1_RXFCON);
+ wmb ();
+
+ /*framing, overrun, enable */
+ writel(readl(IFXMIPS_ASC1_CON) | ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_TOEN | ASCCON_ROEN,
+ IFXMIPS_ASC1_CON);
+}
+
+static int
+ifxmipsasc_startup (struct uart_port *port)
+{
+ unsigned long flags;
+ int retval;
+
+ /* this assumes: CON.BRS = CON.FDE = 0 */
+ if (uartclk == 0)
+ uartclk = ifxmips_get_fpi_hz();
+
+ ifxmipsasc_port.uartclk = uartclk;
+
+ ifxmipsasc1_hw_init();
+
+ local_irq_save(flags);
+
+ retval = request_irq(IFXMIPSASC1_RIR, ifxmipsasc_rx_int, IRQF_DISABLED, "asc_rx", port);
+ if (retval){
+ printk("failed to request ifxmipsasc_rx_int\n");
+ return retval;
+ }
+
+ retval = request_irq(IFXMIPSASC1_TIR, ifxmipsasc_tx_int, IRQF_DISABLED, "asc_tx", port);
+ if (retval){
+ printk("failed to request ifxmipsasc_tx_int\n");
+ goto err1;
+ }
+
+ retval = request_irq(IFXMIPSASC1_EIR, ifxmipsasc_er_int, IRQF_DISABLED, "asc_er", port);
+ if (retval){
+ printk("failed to request ifxmipsasc_er_int\n");
+ goto err2;
+ }
+
+ writel(ASC_IRNREN_RX_BUF | ASC_IRNREN_TX_BUF | ASC_IRNREN_ERR | ASC_IRNREN_TX,
+ IFXMIPS_ASC1_IRNREN);
+
+ local_irq_restore(flags);
+
+ return 0;
+
+err2:
+ free_irq(IFXMIPSASC1_TIR, port);
+
+err1:
+ free_irq(IFXMIPSASC1_RIR, port);
+ local_irq_restore(flags);
+
+ return retval;
+}
+
+static void
+ifxmipsasc_shutdown (struct uart_port *port)
+{
+ free_irq(IFXMIPSASC1_RIR, port);
+ free_irq(IFXMIPSASC1_TIR, port);
+ free_irq(IFXMIPSASC1_EIR, port);
+ /*
+ * disable the baudrate generator to disable the ASC
+ */
+ writel(0, IFXMIPS_ASC1_CON);
+
+ /* flush and then disable the fifos */
+ writel(readl(IFXMIPS_ASC1_RXFCON) | ASCRXFCON_RXFFLU, IFXMIPS_ASC1_RXFCON);
+ writel(readl(IFXMIPS_ASC1_RXFCON) & ~ASCRXFCON_RXFEN, IFXMIPS_ASC1_RXFCON);
+ writel(readl(IFXMIPS_ASC1_TXFCON) | ASCTXFCON_TXFFLU, IFXMIPS_ASC1_TXFCON);
+ writel(readl(IFXMIPS_ASC1_TXFCON) & ~ASCTXFCON_TXFEN, IFXMIPS_ASC1_TXFCON);
+}
+
+static void ifxmipsasc_set_termios(struct uart_port *port, struct ktermios *new, struct ktermios *old)
+{
+ unsigned int cflag;
+ unsigned int iflag;
+ unsigned int quot;
+ unsigned int baud;
+ unsigned int con = 0;
+ unsigned long flags;
+
+ cflag = new->c_cflag;
+ iflag = new->c_iflag;
+
+ /* byte size and parity */
+ switch (cflag & CSIZE) {
+ case CS7:
+ con = ASCCON_M_7ASYNC;
+ break;
+
+ case CS5:
+ case CS6:
+ default:
+ con = ASCCON_M_8ASYNC;
+ break;
+ }
+
+ if (cflag & CSTOPB)
+ con |= ASCCON_STP;
+
+ if (cflag & PARENB) {
+ if (!(cflag & PARODD))
+ con &= ~ASCCON_ODD;
+ else
+ con |= ASCCON_ODD;
+ }
+
+ port->read_status_mask = ASCSTATE_ROE;
+ if (iflag & INPCK)
+ port->read_status_mask |= ASCSTATE_FE | ASCSTATE_PE;
+
+ port->ignore_status_mask = 0;
+ if (iflag & IGNPAR)
+ port->ignore_status_mask |= ASCSTATE_FE | ASCSTATE_PE;
+
+ if (iflag & IGNBRK) {
+ /*
+ * If we're ignoring parity and break indicators,
+ * ignore overruns too (for real raw support).
+ */
+ if (iflag & IGNPAR)
+ port->ignore_status_mask |= ASCSTATE_ROE;
+ }
+
+ if ((cflag & CREAD) == 0)
+ port->ignore_status_mask |= UART_DUMMY_UER_RX;
+
+ /* set error signals - framing, parity and overrun, enable receiver */
+ con |= ASCCON_FEN | ASCCON_TOEN | ASCCON_ROEN;
+
+ local_irq_save(flags);
+
+ /* set up CON */
+ writel(readl(IFXMIPS_ASC1_CON) | con, IFXMIPS_ASC1_CON);
+
+ /* Set baud rate - take a divider of 2 into account */
+ baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);
+ quot = uart_get_divisor(port, baud);
+ quot = quot / 2 - 1;
+
+ /* disable the baudrate generator */
+ writel(readl(IFXMIPS_ASC1_CON) & ~ASCCON_R, IFXMIPS_ASC1_CON);
+
+ /* make sure the fractional divider is off */
+ writel(readl(IFXMIPS_ASC1_CON) & ~ASCCON_FDE, IFXMIPS_ASC1_CON);
+
+ /* set up to use divisor of 2 */
+ writel(readl(IFXMIPS_ASC1_CON) & ~ASCCON_BRS, IFXMIPS_ASC1_CON);
+
+ /* now we can write the new baudrate into the register */
+ writel(quot, IFXMIPS_ASC1_BG);
+
+ /* turn the baudrate generator back on */
+ writel(readl(IFXMIPS_ASC1_CON) | ASCCON_R, IFXMIPS_ASC1_CON);
+
+ /* enable rx */
+ writel(ASCWHBSTATE_SETREN, IFXMIPS_ASC1_WHBSTATE);
+
+ local_irq_restore(flags);
+}
+
+static const char*
+ifxmipsasc_type (struct uart_port *port)
+{
+ return port->type == PORT_IFXMIPSASC ? "IFXMIPSASC" : NULL;
+}
+
+static void
+ifxmipsasc_release_port (struct uart_port *port)
+{
+ return;
+}
+
+static int
+ifxmipsasc_request_port (struct uart_port *port)
+{
+ return 0;
+}
+
+static void
+ifxmipsasc_config_port (struct uart_port *port, int flags)
+{
+ if (flags & UART_CONFIG_TYPE) {
+ port->type = PORT_IFXMIPSASC;
+ ifxmipsasc_request_port(port);
+ }
+}
+
+static int
+ifxmipsasc_verify_port (struct uart_port *port, struct serial_struct *ser)
+{
+ int ret = 0;
+ if (ser->type != PORT_UNKNOWN && ser->type != PORT_IFXMIPSASC)
+ ret = -EINVAL;
+ if (ser->irq < 0 || ser->irq >= NR_IRQS)
+ ret = -EINVAL;
+ if (ser->baud_base < 9600)
+ ret = -EINVAL;
+ return ret;
+}
+
+static struct uart_ops ifxmipsasc_pops = {
+ .tx_empty = ifxmipsasc_tx_empty,
+ .set_mctrl = ifxmipsasc_set_mctrl,
+ .get_mctrl = ifxmipsasc_get_mctrl,
+ .stop_tx = ifxmipsasc_stop_tx,
+ .start_tx = ifxmipsasc_start_tx,
+ .stop_rx = ifxmipsasc_stop_rx,
+ .enable_ms = ifxmipsasc_enable_ms,
+ .break_ctl = ifxmipsasc_break_ctl,
+ .startup = ifxmipsasc_startup,
+ .shutdown = ifxmipsasc_shutdown,
+ .set_termios = ifxmipsasc_set_termios,
+ .type = ifxmipsasc_type,
+ .release_port = ifxmipsasc_release_port,
+ .request_port = ifxmipsasc_request_port,
+ .config_port = ifxmipsasc_config_port,
+ .verify_port = ifxmipsasc_verify_port,
+};
+
+static struct uart_port ifxmipsasc_port = {
+ membase: (void *)IFXMIPS_ASC1_BASE_ADDR,
+ mapbase: IFXMIPS_ASC1_BASE_ADDR,
+ iotype: SERIAL_IO_MEM,
+ irq: IFXMIPSASC1_RIR,
+ uartclk: 0,
+ fifosize: 16,
+ unused: {IFXMIPSASC1_TIR, IFXMIPSASC1_EIR},
+ type: PORT_IFXMIPSASC,
+ ops: &ifxmipsasc_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+};
+
+static void
+ifxmipsasc_console_write (struct console *co, const char *s, u_int count)
+{
+ int i, fifocnt;
+ unsigned long flags;
+
+ local_irq_save(flags);
+ for (i = 0; i < count; i++)
+ {
+ /* wait until the FIFO is not full */
+ do
+ {
+ fifocnt = (readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
+ >> ASCFSTAT_TXFFLOFF;
+ } while (fifocnt == IFXMIPSASC_TXFIFO_FULL);
+
+ if (s[i] == '\0')
+ {
+ break;
+ }
+
+ if (s[i] == '\n')
+ {
+ writel('\r', IFXMIPS_ASC1_TBUF);
+ do
+ {
+ fifocnt = (readl(IFXMIPS_ASC1_FSTAT) & ASCFSTAT_TXFFLMASK)
+ >> ASCFSTAT_TXFFLOFF;
+ } while (fifocnt == IFXMIPSASC_TXFIFO_FULL);
+ }
+ writel(s[i], IFXMIPS_ASC1_TBUF);
+ }
+
+ local_irq_restore(flags);
+}
+
+static int __init
+ifxmipsasc_console_setup (struct console *co, char *options)
+{
+ struct uart_port *port;
+ int baud = 115200;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+
+ if (uartclk == 0)
+ uartclk = ifxmips_get_fpi_hz();
+ co->index = 0;
+ port = &ifxmipsasc_port;
+ ifxmipsasc_port.uartclk = uartclk;
+ ifxmipsasc_port.type = PORT_IFXMIPSASC;
+
+ if (options){
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ }
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+static struct uart_driver ifxmipsasc_reg;
+static struct console ifxmipsasc_console = {
+ name: "ttyS",
+ write: ifxmipsasc_console_write,
+ device: uart_console_device,
+ setup: ifxmipsasc_console_setup,
+ flags: CON_PRINTBUFFER,
+ index: -1,
+ data: &ifxmipsasc_reg,
+};
+
+static int __init
+ifxmipsasc_console_init (void)
+{
+ register_console(&ifxmipsasc_console);
+ return 0;
+}
+console_initcall(ifxmipsasc_console_init);
+
+static struct uart_driver ifxmipsasc_reg = {
+ .owner = THIS_MODULE,
+ .driver_name = "serial",
+ .dev_name = "ttyS",
+ .major = TTY_MAJOR,
+ .minor = 64,
+ .nr = 1,
+ .cons = &ifxmipsasc_console,
+};
+
+static int __init
+ifxmipsasc_init (void)
+{
+ unsigned char res;
+
+ uart_register_driver(&ifxmipsasc_reg);
+ res = uart_add_one_port(&ifxmipsasc_reg, &ifxmipsasc_port);
+
+ return res;
+}
+
+static void __exit
+ifxmipsasc_exit (void)
+{
+ uart_unregister_driver(&ifxmipsasc_reg);
+}
+
+module_init(ifxmipsasc_init);
+module_exit(ifxmipsasc_exit);
+
+MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
+MODULE_DESCRIPTION("MIPS IFXMips serial port driver");
+MODULE_LICENSE("GPL");
projects / openwrt / svn-archive / openwrt.git / commitdiff