#include <asm/bootinfo.h>
-#include <asm/mach-adm5120/adm5120_info.h>
-#include <asm/mach-adm5120/adm5120_defs.h>
-#include <asm/mach-adm5120/adm5120_irq.h>
-#include <asm/mach-adm5120/adm5120_board.h>
-#include <asm/mach-adm5120/adm5120_platform.h>
+#include <adm5120_info.h>
+#include <adm5120_defs.h>
+#include <adm5120_irq.h>
+#include <adm5120_board.h>
+#include <adm5120_platform.h>
static LIST_HEAD(adm5120_boards);
static char adm5120_board_name[ADM5120_BOARD_NAMELEN];
memcpy(adm5120_eth_vlans, board->eth_vlans,
sizeof(adm5120_eth_vlans));
-
if (board->board_setup)
board->board_setup();
static struct platform_device *np2xg_devices[] __initdata = {
&adm5120_flash0_device,
- &adm5120_usbc_device,
+ &adm5120_hcd_device,
};
static struct platform_device *wp54_devices[] __initdata = {
static struct platform_device *br6104k_devices[] __initdata = {
&adm5120_flash0_device,
+ &adm5120_hcd_device,
};
static void __init br6104k_setup(void) {
static struct platform_device *generic_devices[] __initdata = {
&adm5120_flash0_device,
+ &adm5120_hcd_device,
};
static struct adm5120_board generic_board __initdata = {
static struct platform_device *easy5120rt_devices[] __initdata = {
&adm5120_flash0_device,
- &adm5120_usbc_device
};
static struct platform_device *easy5120wvoip_devices[] __initdata = {
static struct platform_device *p335_devices[] __initdata = {
&adm5120_flash0_device,
- &adm5120_usbc_device,
+ &adm5120_hcd_device,
};
static void __init p33x_setup(void)
};
/* USB Host Controller */
-struct resource adm5120_usbc_resources[] = {
+struct resource adm5120_hcd_resources[] = {
[0] = {
.start = ADM5120_USBC_BASE,
.end = ADM5120_USBC_BASE+ADM5120_USBC_SIZE-1,
},
};
-struct platform_device adm5120_usbc_device = {
+static u64 adm5120_hcd_dma_mask = ~(u32)0;
+
+struct platform_device adm5120_hcd_device = {
.name = "adm5120-hcd",
- .id = -1,
- .num_resources = ARRAY_SIZE(adm5120_usbc_resources),
- .resource = adm5120_usbc_resources,
+ .id = 0,
+ .num_resources = ARRAY_SIZE(adm5120_hcd_resources),
+ .resource = adm5120_hcd_resources,
+ .dev = {
+ .dma_mask = &adm5120_hcd_dma_mask,
+ .coherent_dma_mask = 0xFFFFFFFF,
+ }
};
/* NOR flash 0 */
--- /dev/null
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
+ *
+ * This file is licenced under the GPL.
+ */
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef DEBUG
+
+#define edstring(ed_type) ({ char *temp; \
+ switch (ed_type) { \
+ case PIPE_CONTROL: temp = "ctrl"; break; \
+ case PIPE_BULK: temp = "bulk"; break; \
+ case PIPE_INTERRUPT: temp = "intr"; break; \
+ default: temp = "isoc"; break; \
+ }; temp;})
+#define pipestring(pipe) edstring(usb_pipetype(pipe))
+
+/* debug| print the main components of an URB
+ * small: 0) header + data packets 1) just header
+ */
+static void __attribute__((unused))
+urb_print(struct urb * urb, char * str, int small)
+{
+ unsigned int pipe= urb->pipe;
+
+ if (!urb->dev || !urb->dev->bus) {
+ dbg("%s URB: no dev", str);
+ return;
+ }
+
+#ifndef ADMHC_VERBOSE_DEBUG
+ if (urb->status != 0)
+#endif
+ dbg("%s %p dev=%d ep=%d%s-%s flags=%x len=%d/%d stat=%d",
+ str,
+ urb,
+ usb_pipedevice (pipe),
+ usb_pipeendpoint (pipe),
+ usb_pipeout(pipe)? "out" : "in",
+ pipestring(pipe),
+ urb->transfer_flags,
+ urb->actual_length,
+ urb->transfer_buffer_length,
+ urb->status);
+
+#ifdef ADMHC_VERBOSE_DEBUG
+ if (!small) {
+ int i, len;
+
+ if (usb_pipecontrol(pipe)) {
+ printk(KERN_DEBUG __FILE__ ": setup(8):");
+ for (i = 0; i < 8 ; i++)
+ printk (" %02x", ((__u8 *) urb->setup_packet) [i]);
+ printk ("\n");
+ }
+ if (urb->transfer_buffer_length > 0 && urb->transfer_buffer) {
+ printk(KERN_DEBUG __FILE__ ": data(%d/%d):",
+ urb->actual_length,
+ urb->transfer_buffer_length);
+ len = usb_pipeout(pipe)?
+ urb->transfer_buffer_length: urb->actual_length;
+ for (i = 0; i < 16 && i < len; i++)
+ printk (" %02x", ((__u8 *) urb->transfer_buffer) [i]);
+ printk ("%s stat:%d\n", i < len? "...": "", urb->status);
+ }
+ }
+#endif /* ADMHC_VERBOSE_DEBUG */
+}
+
+#define admhc_dbg_sw(ahcd, next, size, format, arg...) \
+ do { \
+ if (next) { \
+ unsigned s_len; \
+ s_len = scnprintf(*next, *size, format, ## arg ); \
+ *size -= s_len; *next += s_len; \
+ } else \
+ admhc_dbg(ahcd,format, ## arg ); \
+ } while (0);
+
+
+static void admhc_dump_intr_mask (
+ struct admhcd *ahcd,
+ char *label,
+ u32 mask,
+ char **next,
+ unsigned *size)
+{
+ admhc_dbg_sw(ahcd, next, size, "%s 0x%08x%s%s%s%s%s%s%s%s%s%s\n",
+ label,
+ mask,
+ (mask & ADMHC_INTR_INTA) ? " INTA" : "",
+ (mask & ADMHC_INTR_FATI) ? " FATI" : "",
+ (mask & ADMHC_INTR_SWI) ? " SWI" : "",
+ (mask & ADMHC_INTR_TDC) ? " TDC" : "",
+ (mask & ADMHC_INTR_FNO) ? " FNO" : "",
+ (mask & ADMHC_INTR_SO) ? " SO" : "",
+ (mask & ADMHC_INTR_INSM) ? " INSM" : "",
+ (mask & ADMHC_INTR_BABI) ? " BABI" : "",
+ (mask & ADMHC_INTR_RESI) ? " RESI" : "",
+ (mask & ADMHC_INTR_SOFI) ? " SOFI" : ""
+ );
+}
+
+static void maybe_print_eds (
+ struct admhcd *ahcd,
+ char *label,
+ u32 value,
+ char **next,
+ unsigned *size)
+{
+ if (value)
+ admhc_dbg_sw(ahcd, next, size, "%s %08x\n", label, value);
+}
+
+static char *buss2string (int state)
+{
+ switch (state) {
+ case ADMHC_BUSS_RESET:
+ return "reset";
+ case ADMHC_BUSS_RESUME:
+ return "resume";
+ case ADMHC_BUSS_OPER:
+ return "operational";
+ case ADMHC_BUSS_SUSPEND:
+ return "suspend";
+ }
+ return "(bad state)";
+}
+
+static void
+admhc_dump_status(struct admhcd *ahcd, char **next, unsigned *size)
+{
+ struct admhcd_regs __iomem *regs = ahcd->regs;
+ u32 temp;
+
+ temp = admhc_readl(ahcd, ®s->gencontrol);
+ admhc_dbg_sw(ahcd, next, size,
+ "gencontrol 0x%08x%s%s%s%s\n",
+ temp,
+ (temp & ADMHC_CTRL_UHFE) ? " UHFE" : "",
+ (temp & ADMHC_CTRL_SIR) ? " SIR" : "",
+ (temp & ADMHC_CTRL_DMAA) ? " DMAA" : "",
+ (temp & ADMHC_CTRL_SR) ? " SR" : ""
+ );
+
+ temp = admhc_readl(ahcd, ®s->host_control);
+ admhc_dbg_sw(ahcd, next, size,
+ "host_control 0x%08x BUSS=%s%s\n",
+ temp,
+ buss2string (temp & ADMHC_HC_BUSS),
+ (temp & ADMHC_HC_DMAE) ? " DMAE" : ""
+ );
+
+ admhc_dump_intr_mask(ahcd, "int_status",
+ admhc_readl(ahcd, ®s->int_status),
+ next, size);
+ admhc_dump_intr_mask(ahcd, "int_enable",
+ admhc_readl(ahcd, ®s->int_enable),
+ next, size);
+
+ maybe_print_eds(ahcd, "hosthead",
+ admhc_readl(ahcd, ®s->hosthead), next, size);
+}
+
+#define dbg_port_sw(hc,num,value,next,size) \
+ admhc_dbg_sw(hc, next, size, \
+ "portstatus [%d] " \
+ "0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \
+ num, temp, \
+ (temp & ADMHC_PS_PRSC) ? " PRSC" : "", \
+ (temp & ADMHC_PS_OCIC) ? " OCIC" : "", \
+ (temp & ADMHC_PS_PSSC) ? " PSSC" : "", \
+ (temp & ADMHC_PS_PESC) ? " PESC" : "", \
+ (temp & ADMHC_PS_CSC) ? " CSC" : "", \
+ \
+ (temp & ADMHC_PS_LSDA) ? " LSDA" : "", \
+ (temp & ADMHC_PS_PPS) ? " PPS" : "", \
+ (temp & ADMHC_PS_PRS) ? " PRS" : "", \
+ (temp & ADMHC_PS_POCI) ? " POCI" : "", \
+ (temp & ADMHC_PS_PSS) ? " PSS" : "", \
+ \
+ (temp & ADMHC_PS_PES) ? " PES" : "", \
+ (temp & ADMHC_PS_CCS) ? " CCS" : "" \
+ );
+
+
+static void
+admhc_dump_roothub(
+ struct admhcd *ahcd,
+ int verbose,
+ char **next,
+ unsigned *size)
+{
+ u32 temp, i;
+
+ temp = admhc_get_rhdesc(ahcd);
+ if (temp == ~(u32)0)
+ return;
+
+ if (verbose) {
+ admhc_dbg_sw(ahcd, next, size,
+ "rhdesc %08x%s%s%s%s%s%s PPCM=%02x%s%s%s%s NUMP=%d(%d)\n",
+ temp,
+ (temp & ADMHC_RH_CRWE) ? " CRWE" : "",
+ (temp & ADMHC_RH_OCIC) ? " OCIC" : "",
+ (temp & ADMHC_RH_LPSC) ? " LPSC" : "",
+ (temp & ADMHC_RH_LPSC) ? " DRWE" : "",
+ (temp & ADMHC_RH_LPSC) ? " OCI" : "",
+ (temp & ADMHC_RH_LPSC) ? " LPS" : "",
+ ((temp & ADMHC_RH_PPCM) >> 16),
+ (temp & ADMHC_RH_NOCP) ? " NOCP" : "",
+ (temp & ADMHC_RH_OCPM) ? " OCPM" : "",
+ (temp & ADMHC_RH_NPS) ? " NPS" : "",
+ (temp & ADMHC_RH_PSM) ? " PSM" : "",
+ (temp & ADMHC_RH_NUMP), ahcd->num_ports
+ );
+ }
+
+ for (i = 0; i < ahcd->num_ports; i++) {
+ temp = admhc_get_portstatus(ahcd, i);
+ dbg_port_sw(ahcd, i, temp, next, size);
+ }
+}
+
+static void admhc_dump(struct admhcd *ahcd, int verbose)
+{
+ admhc_dbg(ahcd, "ADMHC ahcd state\n");
+
+ /* dumps some of the state we know about */
+ admhc_dump_status(ahcd, NULL, NULL);
+ admhc_dbg(ahcd,"current frame #%04x\n",
+ admhc_frame_no(ahcd));
+
+ admhc_dump_roothub(ahcd, verbose, NULL, NULL);
+}
+
+static const char data0[] = "DATA0";
+static const char data1[] = "DATA1";
+
+static void admhc_dump_td(const struct admhcd *ahcd, const char *label,
+ const struct td *td)
+{
+ u32 tmp = hc32_to_cpup(ahcd, &td->hwINFO);
+
+ admhc_dbg(ahcd, "%s td %p; urb %p index %d; hwNextTD %08x\n",
+ label, td,
+ td->urb, td->index,
+ hc32_to_cpup(ahcd, &td->hwNextTD));
+
+ if ((td->flags & TD_FLAG_ISO) == 0) {
+ const char *toggle, *pid;
+
+ switch (tmp & TD_T) {
+ case TD_T_DATA0: toggle = data0; break;
+ case TD_T_DATA1: toggle = data1; break;
+ case TD_T_CARRY: toggle = "CARRY"; break;
+ default: toggle = "(bad toggle)"; break;
+ }
+ switch (tmp & TD_DP) {
+ case TD_DP_SETUP: pid = "SETUP"; break;
+ case TD_DP_IN: pid = "IN"; break;
+ case TD_DP_OUT: pid = "OUT"; break;
+ default: pid = "(bad pid)"; break;
+ }
+ admhc_dbg(ahcd,
+ " status %08x%s CC=%x EC=%d %s %s ISI=%x FN=%x\n",
+ tmp,
+ (tmp & TD_OWN) ? " OWN" : "",
+ TD_CC_GET(tmp),
+ TD_EC_GET(tmp),
+ toggle,
+ pid,
+ TD_ISI_GET(tmp),
+ TD_FN_GET(tmp));
+ } else {
+#if 0 /* TODO: remove */
+ unsigned i;
+ admhc_dbg(ahcd, " info %08x CC=%x FC=%d DI=%d SF=%04x\n", tmp,
+ TD_CC_GET(tmp),
+ (tmp >> 24) & 0x07,
+ (tmp & TD_DI) >> 21,
+ tmp & 0x0000ffff);
+ admhc_dbg(ahcd, " bp0 %08x be %08x\n",
+ hc32_to_cpup (ahcd, &td->hwCBP) & ~0x0fff,
+ hc32_to_cpup (ahcd, &td->hwBE));
+#endif
+ }
+
+ tmp = hc32_to_cpup(ahcd, &td->hwCBL);
+ admhc_dbg(ahcd, " dbp %08x; cbl %08x; LEN=%d%s\n",
+ hc32_to_cpup (ahcd, &td->hwDBP),
+ tmp,
+ TD_BL_GET(tmp),
+ (tmp & TD_IE) ? " IE" : ""
+ );
+}
+
+/* caller MUST own hcd spinlock if verbose is set! */
+static void __attribute__((unused))
+admhc_dump_ed(const struct admhcd *ahcd, const char *label,
+ const struct ed *ed, int verbose)
+{
+ u32 tmp = hc32_to_cpu(ahcd, ed->hwINFO);
+
+ admhc_dbg(ahcd, "%s ed %p state 0x%x type %s; next ed %08x\n",
+ label,
+ ed, ed->state, edstring (ed->type),
+ hc32_to_cpup (ahcd, &ed->hwNextED));
+
+ admhc_dbg(ahcd, " info %08x MAX=%d%s%s%s%s EP=%d DEV=%d\n", tmp,
+ ED_MPS_GET(tmp),
+ (tmp & ED_ISO) ? " ISO" : "",
+ (tmp & ED_SKIP) ? " SKIP" : "",
+ (tmp & ED_SPEED_FULL) ? " FULL" : " LOW",
+ (tmp & ED_INT) ? " INT" : "",
+ ED_EN_GET(tmp),
+ ED_FA_GET(tmp));
+
+ tmp = hc32_to_cpup(ahcd, &ed->hwHeadP);
+ admhc_dbg(ahcd, " tds: head %08x tail %08x %s%s%s\n",
+ tmp & TD_MASK,
+ hc32_to_cpup (ahcd, &ed->hwTailP),
+ (tmp & ED_C) ? data1 : data0,
+ (tmp & ED_H) ? " HALT" : "",
+ verbose ? " td list follows" : " (not listing)");
+
+ if (verbose) {
+ struct list_head *tmp;
+
+ /* use ed->td_list because HC concurrently modifies
+ * hwNextTD as it accumulates ed_donelist.
+ */
+ list_for_each(tmp, &ed->td_list) {
+ struct td *td;
+ td = list_entry(tmp, struct td, td_list);
+ admhc_dump_td (ahcd, " ->", td);
+ }
+ }
+}
+
+#else /* ifdef DEBUG */
+
+static inline void urb_print(struct urb * urb, char * str, int small) {}
+static inline void admhc_dump_ed(const struct admhcd *ahcd, const char *label,
+ const struct ed *ed, int verbose) {}
+static inline void admhc_dump(struct admhcd *ahcd, int verbose) {}
+
+#undef ADMHC_VERBOSE_DEBUG
+
+#endif /* DEBUG */
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef STUB_DEBUG_FILES
+
+static inline void create_debug_files(struct admhcd *bus) { }
+static inline void remove_debug_files(struct admhcd *bus) { }
+
+#else
+
+static ssize_t
+show_list(struct admhcd *ahcd, char *buf, size_t count, struct ed *ed)
+{
+ unsigned temp, size = count;
+
+ if (!ed)
+ return 0;
+
+#if 0
+ /* print first --> last */
+ while (ed->ed_prev)
+ ed = ed->ed_prev;
+#endif
+
+ /* dump a snapshot of the bulk or control schedule */
+ while (ed) {
+ u32 info = hc32_to_cpu(ahcd, ed->hwINFO);
+ u32 headp = hc32_to_cpu(ahcd, ed->hwHeadP);
+ struct list_head *entry;
+ struct td *td;
+
+ temp = scnprintf(buf, size,
+ "ed/%p %s %cs dev%d ep%d %s%smax %d %08x%s%s %s",
+ ed,
+ edstring (ed->type),
+ (info & ED_SPEED_FULL) ? 'f' : 'l',
+ info & ED_FA_MASK,
+ (info >> ED_EN_SHIFT) & ED_EN_MASK,
+ (info & ED_INT) ? "INT " : "",
+ (info & ED_ISO) ? "ISO " : "",
+ (info >> ED_MPS_SHIFT) & ED_MPS_MASK ,
+ info,
+ (info & ED_SKIP) ? " S" : "",
+ (headp & ED_H) ? " H" : "",
+ (headp & ED_C) ? data1 : data0);
+ size -= temp;
+ buf += temp;
+
+ list_for_each(entry, &ed->td_list) {
+ u32 dbp, cbl;
+
+ td = list_entry(entry, struct td, td_list);
+ info = hc32_to_cpup (ahcd, &td->hwINFO);
+ dbp = hc32_to_cpup (ahcd, &td->hwDBP);
+ cbl = hc32_to_cpup (ahcd, &td->hwCBL);
+
+ temp = scnprintf(buf, size,
+ "\n\ttd %p %s %d %s%scc=%x urb %p (%08x,%08x)",
+ td,
+ ({ char *pid;
+ switch (info & TD_DP) {
+ case TD_DP_SETUP: pid = "setup"; break;
+ case TD_DP_IN: pid = "in"; break;
+ case TD_DP_OUT: pid = "out"; break;
+ default: pid = "(bad pid)"; break;
+ } pid;}),
+ TD_BL_GET(cbl),
+ (info & TD_OWN) ? "" : "DONE ",
+ (cbl & TD_IE) ? "IE " : "",
+ TD_CC_GET (info), td->urb, info, cbl);
+ size -= temp;
+ buf += temp;
+ }
+
+ temp = scnprintf(buf, size, "\n");
+ size -= temp;
+ buf += temp;
+
+ ed = ed->ed_next;
+ }
+ return count - size;
+}
+
+static ssize_t
+show_async(struct class_device *class_dev, char *buf)
+{
+ struct usb_bus *bus;
+ struct usb_hcd *hcd;
+ struct admhcd *ahcd;
+ size_t temp;
+ unsigned long flags;
+
+ bus = class_get_devdata(class_dev);
+ hcd = bus_to_hcd(bus);
+ ahcd = hcd_to_admhcd(hcd);
+
+ /* display control and bulk lists together, for simplicity */
+ spin_lock_irqsave(&ahcd->lock, flags);
+#if 0
+ temp = show_list (ahcd, buf, PAGE_SIZE, ahcd->ed_tails[ED_TAIL_CONTROL]);
+ temp += show_list (ahcd, buf + temp, PAGE_SIZE - temp,
+ ahcd->ed_tails[ED_TAIL_BULK]);
+#else
+#ifdef ED_TAIL_ARRAY
+ temp = show_list(ahcd, buf, PAGE_SIZE, ahcd->ed_head);
+#else
+ temp = show_list(ahcd, buf, PAGE_SIZE, ahcd->ed_head);
+#endif
+#endif
+ spin_unlock_irqrestore(&ahcd->lock, flags);
+
+ return temp;
+}
+static CLASS_DEVICE_ATTR(async, S_IRUGO, show_async, NULL);
+
+
+#define DBG_SCHED_LIMIT 64
+
+static ssize_t
+show_periodic(struct class_device *class_dev, char *buf)
+{
+ struct usb_bus *bus;
+ struct usb_hcd *hcd;
+ struct admhcd *ahcd;
+ struct ed **seen, *ed;
+ unsigned long flags;
+ unsigned temp, size, seen_count;
+ char *next;
+ unsigned i;
+
+ if (!(seen = kmalloc(DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC)))
+ return 0;
+ seen_count = 0;
+
+ bus = class_get_devdata(class_dev);
+ hcd = bus_to_hcd(bus);
+ ahcd = hcd_to_admhcd(hcd);
+ next = buf;
+ size = PAGE_SIZE;
+
+ temp = scnprintf(next, size, "size = %d\n", NUM_INTS);
+ size -= temp;
+ next += temp;
+
+ /* dump a snapshot of the periodic schedule (and load) */
+ spin_lock_irqsave(&ahcd->lock, flags);
+ for (i = 0; i < NUM_INTS; i++) {
+ if (!(ed = ahcd->periodic [i]))
+ continue;
+
+ temp = scnprintf(next, size, "%2d [%3d]:", i, ahcd->load [i]);
+ size -= temp;
+ next += temp;
+
+ do {
+ temp = scnprintf(next, size, " ed%d/%p",
+ ed->interval, ed);
+ size -= temp;
+ next += temp;
+ for (temp = 0; temp < seen_count; temp++) {
+ if (seen [temp] == ed)
+ break;
+ }
+
+ /* show more info the first time around */
+ if (temp == seen_count) {
+ u32 info = hc32_to_cpu (ahcd, ed->hwINFO);
+ struct list_head *entry;
+ unsigned qlen = 0;
+
+ /* qlen measured here in TDs, not urbs */
+ list_for_each (entry, &ed->td_list)
+ qlen++;
+ temp = scnprintf(next, size,
+ " (%cs dev%d ep%d%s qlen %u"
+ " max %d %08x%s%s)",
+ (info & ED_SPEED_FULL) ? 'f' : 'l',
+ ED_FA_GET(info),
+ ED_EN_GET(info),
+ (info & ED_ISO) ? "iso" : "int",
+ qlen,
+ ED_MPS_GET(info),
+ info,
+ (info & ED_SKIP) ? " K" : "",
+ (ed->hwHeadP &
+ cpu_to_hc32(ahcd, ED_H)) ?
+ " H" : "");
+ size -= temp;
+ next += temp;
+
+ if (seen_count < DBG_SCHED_LIMIT)
+ seen [seen_count++] = ed;
+
+ ed = ed->ed_next;
+
+ } else {
+ /* we've seen it and what's after */
+ temp = 0;
+ ed = NULL;
+ }
+
+ } while (ed);
+
+ temp = scnprintf(next, size, "\n");
+ size -= temp;
+ next += temp;
+ }
+ spin_unlock_irqrestore(&ahcd->lock, flags);
+ kfree (seen);
+
+ return PAGE_SIZE - size;
+}
+static CLASS_DEVICE_ATTR(periodic, S_IRUGO, show_periodic, NULL);
+
+
+#undef DBG_SCHED_LIMIT
+
+static ssize_t
+show_registers(struct class_device *class_dev, char *buf)
+{
+ struct usb_bus *bus;
+ struct usb_hcd *hcd;
+ struct admhcd *ahcd;
+ struct admhcd_regs __iomem *regs;
+ unsigned long flags;
+ unsigned temp, size;
+ char *next;
+ u32 rdata;
+
+ bus = class_get_devdata(class_dev);
+ hcd = bus_to_hcd(bus);
+ ahcd = hcd_to_admhcd(hcd);
+ regs = ahcd->regs;
+ next = buf;
+ size = PAGE_SIZE;
+
+ spin_lock_irqsave(&ahcd->lock, flags);
+
+ /* dump driver info, then registers in spec order */
+
+ admhc_dbg_sw(ahcd, &next, &size,
+ "bus %s, device %s\n"
+ "%s\n"
+ "%s version " DRIVER_VERSION "\n",
+ hcd->self.controller->bus->name,
+ hcd->self.controller->bus_id,
+ hcd->product_desc,
+ hcd_name);
+
+ if (bus->controller->power.power_state.event) {
+ size -= scnprintf(next, size,
+ "SUSPENDED (no register access)\n");
+ goto done;
+ }
+
+ admhc_dump_status(ahcd, &next, &size);
+
+ /* other registers mostly affect frame timings */
+ rdata = admhc_readl(ahcd, ®s->fminterval);
+ temp = scnprintf(next, size,
+ "fmintvl 0x%08x %sFSLDP=0x%04x FI=0x%04x\n",
+ rdata, (rdata & ADMHC_SFI_FIT) ? "FIT " : "",
+ (rdata >> ADMHC_SFI_FSLDP_SHIFT) & ADMHC_SFI_FSLDP_MASK,
+ rdata & ADMHC_SFI_FI_MASK);
+ size -= temp;
+ next += temp;
+
+ rdata = admhc_readl(ahcd, ®s->fmnumber);
+ temp = scnprintf(next, size, "fmnumber 0x%08x %sFR=0x%04x FN=%04x\n",
+ rdata, (rdata & ADMHC_SFN_FRT) ? "FRT " : "",
+ (rdata >> ADMHC_SFN_FR_SHIFT) & ADMHC_SFN_FR_MASK,
+ rdata & ADMHC_SFN_FN_MASK);
+ size -= temp;
+ next += temp;
+
+ /* TODO: use predefined bitmask */
+ rdata = admhc_readl(ahcd, ®s->lsthresh);
+ temp = scnprintf(next, size, "lsthresh 0x%04x\n",
+ rdata & 0x3fff);
+ size -= temp;
+ next += temp;
+
+ temp = scnprintf(next, size, "hub poll timer: %s\n",
+ admhcd_to_hcd(ahcd)->poll_rh ? "ON" : "OFF");
+ size -= temp;
+ next += temp;
+
+ /* roothub */
+ admhc_dump_roothub(ahcd, 1, &next, &size);
+
+done:
+ spin_unlock_irqrestore(&ahcd->lock, flags);
+ return PAGE_SIZE - size;
+}
+static CLASS_DEVICE_ATTR(registers, S_IRUGO, show_registers, NULL);
+
+
+static inline void create_debug_files (struct admhcd *ahcd)
+{
+ struct class_device *cldev = admhcd_to_hcd(ahcd)->self.class_dev;
+ int retval;
+
+ retval = class_device_create_file(cldev, &class_device_attr_async);
+ retval = class_device_create_file(cldev, &class_device_attr_periodic);
+ retval = class_device_create_file(cldev, &class_device_attr_registers);
+ admhc_dbg(ahcd, "created debug files\n");
+}
+
+static inline void remove_debug_files (struct admhcd *ahcd)
+{
+ struct class_device *cldev = admhcd_to_hcd(ahcd)->self.class_dev;
+
+ class_device_remove_file(cldev, &class_device_attr_async);
+ class_device_remove_file(cldev, &class_device_attr_periodic);
+ class_device_remove_file(cldev, &class_device_attr_registers);
+}
+
+#endif
+
+/*-------------------------------------------------------------------------*/
+
--- /dev/null
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
+ * (C) Copyright 2002 Hewlett-Packard Company
+ *
+ * Bus Glue for AMD Alchemy Au1xxx
+ *
+ * Written by Christopher Hoover <ch@hpl.hp.com>
+ * Based on fragments of previous driver by Rusell King et al.
+ *
+ * Modified for LH7A404 from ahcd-sa1111.c
+ * by Durgesh Pattamatta <pattamattad@sharpsec.com>
+ * Modified for AMD Alchemy Au1xxx
+ * by Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/signal.h>
+
+#include <asm/bootinfo.h>
+#include <asm/mach-adm5120/adm5120_defs.h>
+
+#ifdef DEBUG
+#define HCD_DBG(f, a...) printk(KERN_DEBUG "%s: " f, hcd_name, ## a)
+#else
+#define HCD_DBG(f, a...) do {} while (0)
+#endif
+#define HCD_ERR(f, a...) printk(KERN_ERR "%s: " f, hcd_name, ## a)
+#define HCD_INFO(f, a...) printk(KERN_INFO "%s: " f, hcd_name, ## a)
+
+/*-------------------------------------------------------------------------*/
+
+static int admhc_adm5120_probe(const struct hc_driver *driver,
+ struct platform_device *dev)
+{
+ int retval;
+ struct usb_hcd *hcd;
+ int irq;
+ struct resource *regs;
+
+ /* sanity checks */
+ regs = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!regs) {
+ HCD_DBG("no IOMEM resource found\n");
+ return -ENODEV;
+ }
+
+ irq = platform_get_irq(dev, 0);
+ if (irq < 0) {
+ HCD_DBG("no IRQ resource found\n");
+ return -ENODEV;
+ }
+
+ hcd = usb_create_hcd(driver, &dev->dev, "ADM5120");
+ if (!hcd)
+ return -ENOMEM;
+
+ hcd->rsrc_start = regs->start;
+ hcd->rsrc_len = regs->end - regs->start + 1;
+
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ HCD_DBG("request_mem_region failed\n");
+ retval = -EBUSY;
+ goto err_dev;
+ }
+
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ HCD_DBG("ioremap failed\n");
+ retval = -ENOMEM;
+ goto err_mem;
+ }
+
+ admhc_hcd_init(hcd_to_admhcd(hcd));
+
+ retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+ if (retval)
+ goto err_io;
+
+ return 0;
+
+err_io:
+ iounmap(hcd->regs);
+err_mem:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err_dev:
+ usb_put_hcd(hcd);
+ return retval;
+}
+
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+static void admhc_adm5120_remove(struct usb_hcd *hcd,
+ struct platform_device *dev)
+{
+ usb_remove_hcd(hcd);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int __devinit
+admhc_adm5120_start(struct usb_hcd *hcd)
+{
+ struct admhcd *ahcd = hcd_to_admhcd (hcd);
+ int ret;
+
+ ret = admhc_init(ahcd);
+ if (ret < 0) {
+ HCD_ERR("unable to init %s\n", hcd->self.bus_name);
+ goto err;
+ }
+
+ ret = admhc_run(ahcd);
+ if (ret < 0) {
+ HCD_ERR("unable to run %s\n", hcd->self.bus_name);
+ goto err_stop;
+ }
+
+ return 0;
+
+err_stop:
+ admhc_stop(hcd);
+err:
+ return ret;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static const struct hc_driver adm5120_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "ADM5120 built-in USB 1.1 Host Controller",
+ .hcd_priv_size = sizeof(struct admhcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = admhc_irq,
+ .flags = HCD_USB11 | HCD_MEMORY,
+
+ /*
+ * basic lifecycle operations
+ */
+ .start = admhc_adm5120_start,
+ .stop = admhc_stop,
+ .shutdown = admhc_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = admhc_urb_enqueue,
+ .urb_dequeue = admhc_urb_dequeue,
+ .endpoint_disable = admhc_endpoint_disable,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = admhc_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = admhc_hub_status_data,
+ .hub_control = admhc_hub_control,
+ .hub_irq_enable = admhc_rhsc_enable,
+#ifdef CONFIG_PM
+ .bus_suspend = admhc_bus_suspend,
+ .bus_resume = admhc_bus_resume,
+#endif
+ .start_port_reset = admhc_start_port_reset,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int usb_hcd_adm5120_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ if (mips_machgroup != MACH_GROUP_ADM5120)
+ return -ENODEV;
+
+ ret = admhc_adm5120_probe(&adm5120_hc_driver, pdev);
+
+ return ret;
+}
+
+static int usb_hcd_adm5120_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ admhc_adm5120_remove(hcd, pdev);
+
+ return 0;
+}
+
+#if 0
+/* TODO */
+static int usb_hcd_adm5120_suspend(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+
+ return 0;
+}
+
+static int usb_hcd_adm5120_resume(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+
+ return 0;
+}
+#endif
+
+static struct platform_driver usb_hcd_adm5120_driver = {
+ .probe = usb_hcd_adm5120_probe,
+ .remove = usb_hcd_adm5120_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+#if 0
+ /* TODO */
+ .suspend = usb_hcd_adm5120_suspend,
+ .resume = usb_hcd_adm5120_resume,
+#endif
+ .driver = {
+ .name = "adm5120-hcd",
+ .owner = THIS_MODULE,
+ },
+};
+
/*
- * HCD driver for ADM5120 SoC
+ * OHCI HCD (Host Controller Driver) for USB.
*
- * Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2004 David Brownell <dbrownell@users.sourceforge.net>
*
- * Based on the ADMtek 2.4 driver
- * (C) Copyright 2003 Junius Chen <juniusc@admtek.com.tw>
- * Which again was based on the ohci and uhci drivers.
+ * [ Initialisation is based on Linus' ]
+ * [ uhci code and gregs ahcd fragments ]
+ * [ (C) Copyright 1999 Linus Torvalds ]
+ * [ (C) Copyright 1999 Gregory P. Smith]
+ *
+ *
+ * OHCI is the main "non-Intel/VIA" standard for USB 1.1 host controller
+ * interfaces (though some non-x86 Intel chips use it). It supports
+ * smarter hardware than UHCI. A download link for the spec available
+ * through the http://www.usb.org website.
+ *
+ * This file is licenced under the GPL.
*/
#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
#include <linux/delay.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/init.h>
+#include <linux/timer.h>
#include <linux/list.h>
#include <linux/usb.h>
-#include <linux/platform_device.h>
+#include <linux/usb/otg.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmapool.h>
+#include <linux/reboot.h>
-#include <asm/bootinfo.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/system.h>
+#include <asm/unaligned.h>
#include <asm/byteorder.h>
-#include <asm/mach-adm5120/adm5120_info.h>
#include "../core/hcd.h"
+#include "../core/hub.h"
-MODULE_DESCRIPTION("ADM5120 USB Host Controller Driver");
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Jeroen Vreeken (pe1rxq@amsat.org)");
-
-#define PFX "adm5120-hcd: "
-
-#define ADMHCD_REG_CONTROL 0x00
-#define ADMHCD_SW_RESET 0x00000008 /* Reset */
-#define ADMHCD_DMAA 0x00000004 /* DMA arbitration control */
-#define ADMHCD_SW_INTREQ 0x00000002 /* request software int */
-#define ADMHCD_HOST_EN 0x00000001 /* Host enable */
-#define ADMHCD_REG_INTSTATUS 0x04
-#define ADMHCD_INT_ACT 0x80000000 /* Interrupt active */
-#define ADMHCD_INT_FATAL 0x40000000 /* Fatal interrupt */
-#define ADMHCD_INT_SW 0x20000000 /* software interrupt */
-#define ADMHCD_INT_TD 0x00100000 /* TD completed */
-#define ADMHCD_FNO 0x00000800 /* Frame number overaflow */
-#define ADMHCD_SO 0x00000400 /* Scheduling overrun */
-#define ADMHCD_INSMI 0x00000200 /* Root hub status change */
-#define ADMHCD_BABI 0x00000100 /* Babble detected, host mode */
-#define ADMHCD_RESI 0x00000020 /* Resume detected */
-#define ADMHCD_SOFI 0x00000010 /* SOF transmitted/received, host mode */
-#define ADMHCD_REG_INTENABLE 0x08
-#define ADMHCD_INT_EN 0x80000000 /* Interrupt enable */
-#define ADMHCD_INTMASK 0x00000001 /* Interrupt mask */
-#define ADMHCD_REG_HOSTCONTROL 0x10
-#define ADMHCD_DMA_EN 0x00000004 /* USB host DMA enable */
-#define ADMHCD_STATE_MASK 0x00000003
-#define ADMHCD_STATE_RST 0x00000000 /* bus state reset */
-#define ADMHCD_STATE_RES 0x00000001 /* bus state resume */
-#define ADMHCD_STATE_OP 0x00000002 /* bus state operational */
-#define ADMHCD_STATE_SUS 0x00000003 /* bus state suspended */
-#define ADMHCD_REG_FMINTERVAL 0x18
-#define ADMHCD_REG_FMNUMBER 0x1c
-#define ADMHCD_REG_LSTHRESH 0x70
-#define ADMHCD_REG_RHDESCR 0x74
-#define ADMHCD_CRWE 0x20000000 /* Clear wakeup enable */
-#define ADMHCD_DRWE 0x10000000 /* Device remote wakeup enable */
-#define ADMHCD_HW_OCIC 0x08000000 /* Over current indication change */
-#define ADMHCD_LPSC 0x04000000 /* Local power switch change */
-#define ADMHCD_OCI 0x02000000 /* Over current indication */
-#define ADMHCD_LPS 0x01000000 /* Local power switch/global power switch */
-#define ADMHCD_NOCP 0x00000800 /* No over current protect mode */
-#define ADMHCD_OPCM 0x00000400 /* Over current protect mode */
-#define ADMHCD_NPS 0x00000200 /* No Power Switch */
-#define ADMHCD_PSM 0x00000100 /* Power switch mode */
-#define ADMHCD_REG_PORTSTATUS0 0x78
-#define ADMHCD_CCS 0x00000001 /* current connect status */
-#define ADMHCD_PES 0x00000002 /* port enable status */
-#define ADMHCD_PSS 0x00000004 /* port suspend status */
-#define ADMHCD_POCI 0x00000008 /* port overcurrent indicator */
-#define ADMHCD_PRS 0x00000010 /* port reset status */
-#define ADMHCD_PPS 0x00000100 /* port power status */
-#define ADMHCD_LSDA 0x00000200 /* low speed device attached */
-#define ADMHCD_CSC 0x00010000 /* connect status change */
-#define ADMHCD_PESC 0x00020000 /* enable status change */
-#define ADMHCD_PSSC 0x00040000 /* suspend status change */
-#define ADMHCD_OCIC 0x00080000 /* overcurrent change*/
-#define ADMHCD_PRSC 0x00100000 /* reset status change */
-#define ADMHCD_REG_PORTSTATUS1 0x7c
-#define ADMHCD_REG_HOSTHEAD 0x80
-
-#define ADMHCD_NUMPORTS 1
-#define ADMHCD_DESC_ALIGN 16
-
-struct admhcd_ed {
- /* Don't change first four, they used for DMA */
- u32 control;
- struct admhcd_td *tail;
- struct admhcd_td *head;
- struct admhcd_ed *next;
- /* the rest is for the driver only: */
- struct admhcd_td *cur;
- struct usb_host_endpoint *ep;
- struct urb *urb;
- struct admhcd_ed *real;
-} __attribute__ ((packed));
-
-#define ADMHCD_ED_EPSHIFT 7 /* Shift for endpoint number */
-#define ADMHCD_ED_INT 0x00000800 /* Is this an int endpoint */
-#define ADMHCD_ED_SPEED 0x00002000 /* Is it a high speed dev? */
-#define ADMHCD_ED_SKIP 0x00004000 /* Skip this ED */
-#define ADMHCD_ED_FORMAT 0x00008000 /* Is this an isoc endpoint */
-#define ADMHCD_ED_MAXSHIFT 16 /* Shift for max packet size */
-
-struct admhcd_td {
- /* Don't change first four, they are used for DMA */
- u32 control;
- u32 buffer;
- u32 buflen;
- struct admhcd_td *next;
- /* the rest is for the driver only: */
- struct urb *urb;
- struct admhcd_td *real;
-} __attribute__ ((packed));
-
-#define ADMHCD_TD_OWN 0x80000000
-#define ADMHCD_TD_TOGGLE 0x00000000
-#define ADMHCD_TD_DATA0 0x01000000
-#define ADMHCD_TD_DATA1 0x01800000
-#define ADMHCD_TD_OUT 0x00200000
-#define ADMHCD_TD_IN 0x00400000
-#define ADMHCD_TD_SETUP 0x00000000
-#define ADMHCD_TD_ISO 0x00010000
-#define ADMHCD_TD_R 0x00040000
-#define ADMHCD_TD_INTEN 0x00010000
-
-static int admhcd_td_err[16] = {
- 0, /* No */
- -EREMOTEIO, /* CRC */
- -EREMOTEIO, /* bit stuff */
- -EREMOTEIO, /* data toggle */
- -EPIPE, /* stall */
- -ETIMEDOUT, /* timeout */
- -EPROTO, /* pid err */
- -EPROTO, /* unexpected pid */
- -EREMOTEIO, /* data overrun */
- -EREMOTEIO, /* data underrun */
- -ETIMEDOUT, /* 1010 */
- -ETIMEDOUT, /* 1011 */
- -EREMOTEIO, /* buffer overrun */
- -EREMOTEIO, /* buffer underrun */
- -ETIMEDOUT, /* 1110 */
- -ETIMEDOUT, /* 1111 */
-};
-
-#define ADMHCD_TD_ERRMASK 0x38000000
-#define ADMHCD_TD_ERRSHIFT 27
-
-#define TD(td) ((struct admhcd_td *)(((u32)(td)) & ~(ADMHCD_DESC_ALIGN-1)))
-#define ED(ed) ((struct admhcd_ed *)(((u32)(ed)) & ~(ADMHCD_DESC_ALIGN-1)))
-
-struct admhcd {
- spinlock_t lock;
-
- /* Root hub registers */
- u32 rhdesca;
- u32 rhdescb;
- u32 rhstatus;
- u32 rhport[2];
-
- /* async schedule: control, bulk */
- struct list_head async;
- u32 base;
- u32 dma_en;
- unsigned long flags;
-};
+#define DRIVER_VERSION "v0.01"
+#define DRIVER_AUTHOR "Gabor Juhos <juhosg at openwrt.org>"
+#define DRIVER_DESC "ADMtek USB 1.1 Host Controller Driver"
-static inline struct admhcd *hcd_to_admhcd(struct usb_hcd *hcd)
-{
- return (struct admhcd *)(hcd->hcd_priv);
-}
+/*-------------------------------------------------------------------------*/
-static inline struct usb_hcd *admhcd_to_hcd(struct admhcd *admhcd)
-{
- return container_of((void *)admhcd, struct usb_hcd, hcd_priv);
-}
+#define ADMHC_VERBOSE_DEBUG /* not always helpful */
+#undef LATE_ED_SCHEDULE
-static char hcd_name[] = "adm5120-hcd";
+/* For initializing controller (mask in an HCFS mode too) */
+#define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
-static u32 admhcd_reg_get(struct admhcd *ahcd, int reg)
-{
- return *(volatile u32 *)KSEG1ADDR(ahcd->base+reg);
-}
+#define ADMHC_INTR_INIT \
+ ( ADMHC_INTR_MIE | ADMHC_INTR_INSM | ADMHC_INTR_FATI \
+ | ADMHC_INTR_RESI | ADMHC_INTR_TDC | ADMHC_INTR_BABI )
-static void admhcd_reg_set(struct admhcd *ahcd, int reg, u32 val)
-{
- *(volatile u32 *)KSEG1ADDR(ahcd->base+reg) = val;
-}
+/*-------------------------------------------------------------------------*/
-static void admhcd_lock(struct admhcd *ahcd)
-{
- spin_lock_irqsave(&ahcd->lock, ahcd->flags);
- ahcd->dma_en = admhcd_reg_get(ahcd, ADMHCD_REG_HOSTCONTROL) &
- ADMHCD_DMA_EN;
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP);
-}
+static const char hcd_name [] = "admhc-hcd";
-static void admhcd_unlock(struct admhcd *ahcd)
-{
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL,
- ADMHCD_STATE_OP | ahcd->dma_en);
- spin_unlock_irqrestore(&ahcd->lock, ahcd->flags);
-}
+#define STATECHANGE_DELAY msecs_to_jiffies(300)
-static struct admhcd_td *admhcd_td_alloc(struct admhcd_ed *ed, struct urb *urb)
-{
- struct admhcd_td *tdn, *td;
-
- tdn = kzalloc(sizeof(*tdn)+ADMHCD_DESC_ALIGN, GFP_ATOMIC);
- if (!tdn)
- return NULL;
-
- tdn->real = tdn;
- tdn = TD(KSEG1ADDR(tdn));
- if (ed->cur == NULL) {
- ed->cur = tdn;
- ed->head = tdn;
- ed->tail = tdn;
- td = tdn;
- } else {
- /* Supply back the old tail and link in new td as tail */
- td = TD(ed->tail);
- TD(ed->tail)->next = tdn;
- ed->tail = tdn;
- }
- td->urb = urb;
-
- return td;
-}
+#include "adm5120.h"
-static void admhcd_td_free(struct admhcd_ed *ed, struct urb *urb)
-{
- struct admhcd_td *td, **tdp;
-
- if (urb == NULL)
- ed->control |= ADMHCD_ED_SKIP;
- tdp = &ed->cur;
- td = ed->cur;
- do {
- if (td->urb == urb)
- break;
- tdp = &td->next;
- td = TD(td->next);
- } while (td);
- while (td && td->urb == urb) {
- *tdp = TD(td->next);
- kfree(td->real);
- td = *tdp;
- }
-}
-
-/* Find an endpoint's descriptor, if needed allocate a new one and link it
- in the DMA chain
- */
-static struct admhcd_ed *admhcd_get_ed(struct admhcd *ahcd,
- struct usb_host_endpoint *ep, struct urb *urb)
-{
- struct admhcd_ed *hosthead;
- struct admhcd_ed *found = NULL, *ed = NULL;
- unsigned int pipe = urb->pipe;
-
- admhcd_lock(ahcd);
- hosthead = (struct admhcd_ed *)admhcd_reg_get(ahcd, ADMHCD_REG_HOSTHEAD);
- if (hosthead) {
- for (ed = hosthead;; ed = ED(ed->next)) {
- if (ed->ep == ep) {
- found = ed;
- break;
- }
- if (ED(ed->next) == hosthead)
- break;
- }
- }
- if (!found) {
- found = kzalloc(sizeof(*found)+ADMHCD_DESC_ALIGN, GFP_ATOMIC);
- if (!found)
- goto out;
- found->real = found;
- found->ep = ep;
- found = ED(KSEG1ADDR(found));
- found->control = usb_pipedevice(pipe) |
- (usb_pipeendpoint(pipe) << ADMHCD_ED_EPSHIFT) |
- (usb_pipeint(pipe) ? ADMHCD_ED_INT : 0) |
- (urb->dev->speed == USB_SPEED_FULL ? ADMHCD_ED_SPEED : 0) |
- (usb_pipeisoc(pipe) ? ADMHCD_ED_FORMAT : 0) |
- (usb_maxpacket(urb->dev, pipe, usb_pipeout(pipe)) << ADMHCD_ED_MAXSHIFT);
- /* Alloc first dummy td */
- admhcd_td_alloc(found, NULL);
- if (hosthead) {
- found->next = hosthead;
- ed->next = found;
- } else {
- found->next = found;
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, (u32)found);
- }
- }
-out:
- admhcd_unlock(ahcd);
- return found;
-}
+static void admhc_dump(struct admhcd *ahcd, int verbose);
+static int admhc_init(struct admhcd *ahcd);
+static void admhc_stop(struct usb_hcd *hcd);
-static struct admhcd_td *admhcd_td_fill(u32 control, struct admhcd_td *td,
- dma_addr_t data, int len)
-{
- td->buffer = data;
- td->buflen = len;
- td->control = control;
- return TD(td->next);
-}
+#include "adm5120-hub.c"
+#include "adm5120-dbg.c"
+#include "adm5120-mem.c"
+#include "adm5120-q.c"
-static void admhcd_ed_start(struct admhcd *ahcd, struct admhcd_ed *ed)
-{
- struct admhcd_td *td = ed->cur;
+/*-------------------------------------------------------------------------*/
- if (ed->urb)
- return;
- if (td->urb) {
- ed->urb = td->urb;
- while (1) {
- td->control |= ADMHCD_TD_OWN;
- if (TD(td->next)->urb != td->urb) {
- td->buflen |= ADMHCD_TD_INTEN;
- break;
- }
- td = TD(td->next);
- }
- }
- ed->head = TD(ed->head);
- ahcd->dma_en |= ADMHCD_DMA_EN;
-}
-
-static irqreturn_t admhcd_irq(struct usb_hcd *hcd)
+/*
+ * queue up an urb for anything except the root hub
+ */
+static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
+ struct urb *urb, gfp_t mem_flags)
{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- u32 intstatus;
-
- intstatus = admhcd_reg_get(ahcd, ADMHCD_REG_INTSTATUS);
- if (intstatus & ADMHCD_INT_FATAL) {
- admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_FATAL);
- /* FIXME: handle fatal interrupts */
- }
-
- if (intstatus & ADMHCD_INT_SW) {
- admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_SW);
- /* FIXME: handle software interrupts */
- }
-
- if (intstatus & ADMHCD_INT_TD) {
- struct admhcd_ed *ed, *head;
-
- admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_TD);
-
- head = (struct admhcd_ed *)admhcd_reg_get(ahcd, ADMHCD_REG_HOSTHEAD);
- ed = head;
- if (ed) do {
- /* Is it a finished TD? */
- if (ed->urb && !(ed->cur->control & ADMHCD_TD_OWN)) {
- struct admhcd_td *td;
- int error;
-
- td = ed->cur;
- error = (td->control & ADMHCD_TD_ERRMASK) >>
- ADMHCD_TD_ERRSHIFT;
- ed->urb->status = admhcd_td_err[error];
- admhcd_td_free(ed, ed->urb);
- // Calculate real length!!!
- ed->urb->actual_length = ed->urb->transfer_buffer_length;
- ed->urb->hcpriv = NULL;
- usb_hcd_giveback_urb(hcd, ed->urb);
- ed->urb = NULL;
- }
- admhcd_ed_start(ahcd, ed);
- ed = ED(ed->next);
- } while (ed != head);
- }
+ struct admhcd *ahcd = hcd_to_admhcd(hcd);
+ struct ed *ed;
+ struct urb_priv *urb_priv;
+ unsigned int pipe = urb->pipe;
+ int i, td_cnt = 0;
+ unsigned long flags;
+ int retval = 0;
- return IRQ_HANDLED;
-}
+#ifdef ADMHC_VERBOSE_DEBUG
+ urb_print(urb, "ENQ", usb_pipein(pipe));
+#endif
-static int admhcd_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
- struct urb *urb, gfp_t mem_flags)
-{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- struct admhcd_ed *ed;
- struct admhcd_td *td;
- int size = 0, i, zero = 0, ret = 0;
- unsigned int pipe = urb->pipe, toggle = 0;
- dma_addr_t data = (dma_addr_t)urb->transfer_buffer;
- int data_len = urb->transfer_buffer_length;
-
- ed = admhcd_get_ed(ahcd, ep, urb);
+ /* every endpoint has an ed, locate and maybe (re)initialize it */
+ ed = ed_get(ahcd, ep, urb->dev, pipe, urb->interval);
if (!ed)
return -ENOMEM;
- switch(usb_pipetype(pipe)) {
+ /* for the private part of the URB we need the number of TDs */
+ switch (ed->type) {
case PIPE_CONTROL:
- size = 2;
- case PIPE_INTERRUPT:
+ if (urb->transfer_buffer_length > TD_DATALEN_MAX)
+ /* td_submit_urb() doesn't yet handle these */
+ return -EMSGSIZE;
+
+ /* 1 TD for setup, 1 for ACK, plus ... */
+ td_cnt = 2;
+ /* FALLTHROUGH */
case PIPE_BULK:
- default:
- size += urb->transfer_buffer_length / 4096;
- if (urb->transfer_buffer_length % 4096)
- size++;
- if (size == 0)
- size++;
- else if (urb->transfer_flags & URB_ZERO_PACKET &&
- !(urb->transfer_buffer_length %
- usb_maxpacket(urb->dev, pipe, usb_pipeout(pipe)))) {
- size++;
- zero = 1;
- }
+ /* one TD for every 4096 Bytes (can be upto 8K) */
+ td_cnt += urb->transfer_buffer_length / TD_DATALEN_MAX;
+ /* ... and for any remaining bytes ... */
+ if ((urb->transfer_buffer_length % TD_DATALEN_MAX) != 0)
+ td_cnt++;
+ /* ... and maybe a zero length packet to wrap it up */
+ if (td_cnt == 0)
+ td_cnt++;
+ else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
+ && (urb->transfer_buffer_length
+ % usb_maxpacket(urb->dev, pipe,
+ usb_pipeout (pipe))) == 0)
+ td_cnt++;
+ break;
+ case PIPE_INTERRUPT:
+ /*
+ * for Interrupt IN/OUT transactions, each ED contains
+ * only 1 TD.
+ * TODO: check transfer_buffer_length?
+ */
+ td_cnt = 1;
break;
case PIPE_ISOCHRONOUS:
- size = urb->number_of_packets;
+ /* number of packets from URB */
+ td_cnt = urb->number_of_packets;
break;
+ default:
+ /* paranoia */
+ admhc_err(ahcd, "bad EP type %d", ed->type);
+ return -EINVAL;
}
- admhcd_lock(ahcd);
- /* Remember the first td */
- td = admhcd_td_alloc(ed, urb);
- if (!td) {
- ret = -ENOMEM;
- goto out;
+ urb_priv = urb_priv_alloc(ahcd, td_cnt, mem_flags);
+ if (!urb_priv)
+ return -ENOMEM;
+
+ urb_priv->ed = ed;
+
+ spin_lock_irqsave(&ahcd->lock, flags);
+ /* don't submit to a dead HC */
+ if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {
+ retval = -ENODEV;
+ goto fail;
}
- /* Allocate additionall tds first */
- for (i = 1; i < size; i++) {
- if (admhcd_td_alloc(ed, urb) == NULL) {
- admhcd_td_free(ed, urb);
- ret = -ENOMEM;
- goto out;
- }
+ if (!HC_IS_RUNNING(hcd->state)) {
+ retval = -ENODEV;
+ goto fail;
}
- if (usb_gettoggle(urb->dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)))
- toggle = ADMHCD_TD_TOGGLE;
- else {
- toggle = ADMHCD_TD_DATA0;
- usb_settoggle(urb->dev, usb_pipeendpoint(pipe),
- usb_pipeout(pipe), 1);
+ /* in case of unlink-during-submit */
+ spin_lock(&urb->lock);
+ if (urb->status != -EINPROGRESS) {
+ spin_unlock(&urb->lock);
+ urb->hcpriv = urb_priv;
+ finish_urb(ahcd, urb);
+ retval = 0;
+ goto fail;
}
- switch(usb_pipetype(pipe)) {
- case PIPE_CONTROL:
- td = admhcd_td_fill(ADMHCD_TD_SETUP | ADMHCD_TD_DATA0,
- td, (dma_addr_t)urb->setup_packet, 8);
- while (data_len > 0) {
- td = admhcd_td_fill(ADMHCD_TD_DATA1
- | ADMHCD_TD_R |
- (usb_pipeout(pipe) ?
- ADMHCD_TD_OUT : ADMHCD_TD_IN), td,
- data, data_len % 4097);
- data_len -= 4096;
- }
- admhcd_td_fill(ADMHCD_TD_DATA1 | (usb_pipeout(pipe) ?
- ADMHCD_TD_IN : ADMHCD_TD_OUT), td,
- data, 0);
- break;
- case PIPE_INTERRUPT:
- case PIPE_BULK:
- //info ok for interrupt?
- i = 0;
- while(data_len > 4096) {
- td = admhcd_td_fill((usb_pipeout(pipe) ?
- ADMHCD_TD_OUT :
- ADMHCD_TD_IN | ADMHCD_TD_R) |
- (i ? ADMHCD_TD_TOGGLE : toggle), td,
- data, 4096);
- data += 4096;
- data_len -= 4096;
- i++;
- }
- td = admhcd_td_fill((usb_pipeout(pipe) ?
- ADMHCD_TD_OUT : ADMHCD_TD_IN) |
- (i ? ADMHCD_TD_TOGGLE : toggle), td, data, data_len);
- i++;
- if (zero)
- admhcd_td_fill((usb_pipeout(pipe) ?
- ADMHCD_TD_OUT : ADMHCD_TD_IN) |
- (i ? ADMHCD_TD_TOGGLE : toggle), td, 0, 0);
- break;
- case PIPE_ISOCHRONOUS:
- for (i = 0; i < urb->number_of_packets; i++) {
- td = admhcd_td_fill(ADMHCD_TD_ISO |
- ((urb->start_frame + i) & 0xffff), td,
- data + urb->iso_frame_desc[i].offset,
- urb->iso_frame_desc[i].length);
+ /* schedule the ed if needed */
+ if (ed->state == ED_IDLE) {
+#ifndef LATE_ED_SCHEDULE
+ retval = ed_schedule(ahcd, ed);
+ if (retval < 0)
+ goto fail0;
+#endif
+ if (ed->type == PIPE_ISOCHRONOUS) {
+ u16 frame = admhc_frame_no(ahcd);
+
+ /* delay a few frames before the first TD */
+ frame += max_t (u16, 8, ed->interval);
+ frame &= ~(ed->interval - 1);
+ frame |= ed->branch;
+ urb->start_frame = frame;
+
+ /* yes, only URB_ISO_ASAP is supported, and
+ * urb->start_frame is never used as input.
+ */
}
- break;
- }
- urb->hcpriv = ed;
- admhcd_ed_start(ahcd, ed);
-out:
- admhcd_unlock(ahcd);
- return ret;
+ } else if (ed->type == PIPE_ISOCHRONOUS)
+ urb->start_frame = ed->last_iso + ed->interval;
+
+ /* fill the TDs and link them to the ed; and
+ * enable that part of the schedule, if needed
+ * and update count of queued periodic urbs
+ */
+ urb->hcpriv = urb_priv;
+ td_submit_urb(ahcd, urb);
+
+#ifdef LATE_ED_SCHEDULE
+ if (ed->state == ED_IDLE)
+ retval = ed_schedule(ahcd, ed);
+#endif
+
+ admhc_dump_ed(ahcd, "admhc_urb_enqueue", urb_priv->ed, 1);
+
+fail0:
+ spin_unlock(&urb->lock);
+fail:
+ if (retval)
+ urb_priv_free(ahcd, urb_priv);
+
+ spin_unlock_irqrestore(&ahcd->lock, flags);
+ return retval;
}
-static int admhcd_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
+/*
+ * decouple the URB from the HC queues (TDs, urb_priv); it's
+ * already marked using urb->status. reporting is always done
+ * asynchronously, and we might be dealing with an urb that's
+ * partially transferred, or an ED with other urbs being unlinked.
+ */
+static int admhc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- struct admhcd_ed *ed;
+ struct admhcd *ahcd = hcd_to_admhcd(hcd);
+ unsigned long flags;
- admhcd_lock(ahcd);
+#ifdef ADMHC_VERBOSE_DEBUG
+ urb_print(urb, "DEQ", 1);
+#endif
- ed = urb->hcpriv;
- if (ed && ed->urb != urb)
- admhcd_td_free(ed, urb);
+ spin_lock_irqsave(&ahcd->lock, flags);
+ if (HC_IS_RUNNING(hcd->state)) {
+ struct urb_priv *urb_priv;
+
+ /* Unless an IRQ completed the unlink while it was being
+ * handed to us, flag it for unlink and giveback, and force
+ * some upcoming INTR_SF to call finish_unlinks()
+ */
+ urb_priv = urb->hcpriv;
+ if (urb_priv) {
+ if (urb_priv->ed->state == ED_OPER)
+ start_ed_unlink(ahcd, urb_priv->ed);
+ }
+ } else {
+ /*
+ * with HC dead, we won't respect hc queue pointers
+ * any more ... just clean up every urb's memory.
+ */
+ if (urb->hcpriv)
+ finish_urb(ahcd, urb);
+ }
+ spin_unlock_irqrestore(&ahcd->lock, flags);
- admhcd_unlock(ahcd);
return 0;
}
-static void admhcd_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
+/*-------------------------------------------------------------------------*/
+
+/* frees config/altsetting state for endpoints,
+ * including ED memory, dummy TD, and bulk/intr data toggle
+ */
+
+static void
+admhc_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- struct admhcd_ed *ed, *edt, *head;
+ struct admhcd *ahcd = hcd_to_admhcd(hcd);
+ unsigned long flags;
+ struct ed *ed = ep->hcpriv;
+ unsigned limit = 1000;
+
+ /* ASSERT: any requests/urbs are being unlinked */
+ /* ASSERT: nobody can be submitting urbs for this any more */
+
+ if (!ed)
+ return;
+
+#ifdef ADMHC_VERBOSE_DEBUG
+ spin_lock_irqsave(&ahcd->lock, flags);
+ admhc_dump_ed(ahcd, "ep_disable", ed, 1);
+ spin_unlock_irqrestore(&ahcd->lock, flags);
+#endif
- admhcd_lock(ahcd);
+rescan:
+ spin_lock_irqsave(&ahcd->lock, flags);
+
+ if (!HC_IS_RUNNING(hcd->state)) {
+sanitize:
+ ed->state = ED_IDLE;
+ finish_unlinks(ahcd, 0);
+ }
- head = (struct admhcd_ed *)admhcd_reg_get(ahcd, ADMHCD_REG_HOSTHEAD);
- if (!head)
- goto out;
- for (ed = head; ED(ed->next) != head; ed = ED(ed->next))
- if (ed->ep == ep)
+ switch (ed->state) {
+ case ED_UNLINK: /* wait for hw to finish? */
+ /* major IRQ delivery trouble loses INTR_SOFI too... */
+ if (limit-- == 0) {
+ admhc_warn(ahcd, "IRQ INTR_SOFI lossage\n");
+ goto sanitize;
+ }
+ spin_unlock_irqrestore(&ahcd->lock, flags);
+ schedule_timeout_uninterruptible(1);
+ goto rescan;
+ case ED_IDLE: /* fully unlinked */
+ if (list_empty(&ed->td_list)) {
+ td_free (ahcd, ed->dummy);
+ ed_free (ahcd, ed);
break;
- if (ed->ep != ep)
- goto out;
- while (ed->cur)
- admhcd_td_free(ed, ed->cur->urb);
- if (head == ed) {
- if (ED(ed->next) == ed) {
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, 0);
- ahcd->dma_en = 0;
- goto out_free;
}
- head = ED(ed->next);
- for (edt = head; ED(edt->next) != head; edt = ED(edt->next));
- edt->next = ED(ed->next);
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, (u32)ed->next);
- goto out_free;
+ /* else FALL THROUGH */
+ default:
+ /* caller was supposed to have unlinked any requests;
+ * that's not our job. can't recover; must leak ed.
+ */
+ admhc_err(ahcd, "leak ed %p (#%02x) state %d%s\n",
+ ed, ep->desc.bEndpointAddress, ed->state,
+ list_empty(&ed->td_list) ? "" : " (has tds)");
+ td_free(ahcd, ed->dummy);
+ break;
}
- for (edt = head; edt->next != ed; edt = edt->next);
- edt->next = ed->next;
-
-out_free:
- kfree(ed->real);
-out:
- admhcd_unlock(ahcd);
+ ep->hcpriv = NULL;
+ spin_unlock_irqrestore(&ahcd->lock, flags);
+ return;
}
-static int admhcd_get_frame_number(struct usb_hcd *hcd)
+static int admhc_get_frame(struct usb_hcd *hcd)
{
struct admhcd *ahcd = hcd_to_admhcd(hcd);
- return admhcd_reg_get(ahcd, ADMHCD_REG_FMNUMBER) & 0x0000ffff;
+ return admhc_frame_no(ahcd);
}
-static int admhcd_hub_status_data(struct usb_hcd *hcd, char *buf)
+static void admhc_usb_reset(struct admhcd *ahcd)
{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- int port;
-
- *buf = 0;
- for (port = 0; port < ADMHCD_NUMPORTS; port++) {
- if (admhcd_reg_get(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4) &
- (ADMHCD_CSC | ADMHCD_PESC | ADMHCD_PSSC | ADMHCD_OCIC |
- ADMHCD_PRSC))
- *buf |= (1 << (port + 1));
- }
- return !!*buf;
+#if 0
+ ahcd->hc_control = admhc_readl(ahcd, &ahcd->regs->control);
+ ahcd->hc_control &= OHCI_CTRL_RWC;
+ admhc_writel(ahcd, ahcd->hc_control, &ahcd->regs->control);
+#else
+ /* FIXME */
+ ahcd->host_control = ADMHC_BUSS_RESET;
+ admhc_writel(ahcd, ahcd->host_control ,&ahcd->regs->host_control);
+#endif
}
-static __u8 root_hub_hub_des[] = {
- 0x09, /* __u8 bLength; */
- 0x29, /* __u8 bDescriptorType; Hub-descriptor */
- 0x02, /* __u8 bNbrPorts; */
- 0x0a, 0x00, /* __u16 wHubCharacteristics; */
- 0x01, /* __u8 bPwrOn2pwrGood; 2ms */
- 0x00, /* __u8 bHubContrCurrent; 0mA */
- 0x00, /* __u8 DeviceRemovable; */
- 0xff, /* __u8 PortPwrCtrlMask; */
-};
-
-static int admhcd_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
- u16 wIndex, char *buf, u16 wLength)
+/* admhc_shutdown forcibly disables IRQs and DMA, helping kexec and
+ * other cases where the next software may expect clean state from the
+ * "firmware". this is bus-neutral, unlike shutdown() methods.
+ */
+static void
+admhc_shutdown(struct usb_hcd *hcd)
{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- int retval = 0, len;
- unsigned int port = wIndex -1;
+ struct admhcd *ahcd;
- switch (typeReq) {
+ ahcd = hcd_to_admhcd(hcd);
+ admhc_intr_disable(ahcd, ADMHC_INTR_MIE);
+ admhc_dma_disable(ahcd);
+ admhc_usb_reset(ahcd);
+ /* flush the writes */
+ admhc_writel_flush(ahcd);
+}
- case GetHubStatus:
- *(__le32 *)buf = cpu_to_le32(0);
- break;
- case GetPortStatus:
- if (port >= ADMHCD_NUMPORTS)
- goto err;
- *(__le32 *)buf = cpu_to_le32(
- admhcd_reg_get(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4));
- break;
- case SetHubFeature: /* We don't implement these */
- case ClearHubFeature:
- switch (wValue) {
- case C_HUB_OVER_CURRENT:
- case C_HUB_LOCAL_POWER:
- break;
- default:
- goto err;
- }
- case SetPortFeature:
- if (port >= ADMHCD_NUMPORTS)
- goto err;
-
- switch (wValue) {
- case USB_PORT_FEAT_SUSPEND:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PSS);
- break;
- case USB_PORT_FEAT_RESET:
- if (admhcd_reg_get(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4)
- & ADMHCD_CCS) {
- admhcd_reg_set(ahcd,
- ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PRS | ADMHCD_CSC);
- mdelay(50);
- admhcd_reg_set(ahcd,
- ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PES | ADMHCD_CSC);
- }
- break;
- case USB_PORT_FEAT_POWER:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PPS);
- break;
- default:
- goto err;
- }
- break;
- case ClearPortFeature:
- if (port >= ADMHCD_NUMPORTS)
- goto err;
-
- switch (wValue) {
- case USB_PORT_FEAT_ENABLE:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_CCS);
- break;
- case USB_PORT_FEAT_C_ENABLE:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PESC);
- break;
- case USB_PORT_FEAT_SUSPEND:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_POCI);
- break;
- case USB_PORT_FEAT_C_SUSPEND:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PSSC);
- case USB_PORT_FEAT_POWER:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_LSDA);
- break;
- case USB_PORT_FEAT_C_CONNECTION:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_CSC);
- break;
- case USB_PORT_FEAT_C_OVER_CURRENT:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_OCIC);
- break;
- case USB_PORT_FEAT_C_RESET:
- admhcd_reg_set(ahcd, ADMHCD_REG_PORTSTATUS0 + port*4,
- ADMHCD_PRSC);
- break;
- default:
- goto err;
- }
- break;
- case GetHubDescriptor:
- len = min_t(unsigned int, sizeof(root_hub_hub_des), wLength);
- memcpy(buf, root_hub_hub_des, len);
- break;
- default:
-err:
- retval = -EPIPE;
+/*-------------------------------------------------------------------------*
+ * HC functions
+ *-------------------------------------------------------------------------*/
+
+static void admhc_eds_cleanup(struct admhcd *ahcd)
+{
+ if (ahcd->ed_tails[PIPE_INTERRUPT]) {
+ ed_free(ahcd, ahcd->ed_tails[PIPE_INTERRUPT]);
+ ahcd->ed_tails[PIPE_INTERRUPT] = NULL;
}
- return retval;
-}
+ if (ahcd->ed_tails[PIPE_ISOCHRONOUS]) {
+ ed_free(ahcd, ahcd->ed_tails[PIPE_ISOCHRONOUS]);
+ ahcd->ed_tails[PIPE_ISOCHRONOUS] = NULL;
+ }
-static int admhcd_start(struct usb_hcd *hcd)
-{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- unsigned long flags;
+ if (ahcd->ed_tails[PIPE_CONTROL]) {
+ ed_free(ahcd, ahcd->ed_tails[PIPE_CONTROL]);
+ ahcd->ed_tails[PIPE_CONTROL] = NULL;
+ }
- spin_lock_irqsave(&ahcd->lock, flags);
+ if (ahcd->ed_tails[PIPE_BULK]) {
+ ed_free(ahcd, ahcd->ed_tails[PIPE_BULK]);
+ ahcd->ed_tails[PIPE_BULK] = NULL;
+ }
- /* Initialise the HCD registers */
- admhcd_reg_set(ahcd, ADMHCD_REG_INTENABLE, 0);
- mdelay(10);
+ ahcd->ed_head = NULL;
+}
- admhcd_reg_set(ahcd, ADMHCD_REG_CONTROL, ADMHCD_SW_RESET);
+#define ED_DUMMY_INFO (ED_SPEED_FULL | ED_SKIP)
- while (admhcd_reg_get(ahcd, ADMHCD_REG_CONTROL) & ADMHCD_SW_RESET) {
- printk(KERN_WARNING PFX "waiting for reset to complete\n");
- mdelay(1);
- }
+static int admhc_eds_init(struct admhcd *ahcd)
+{
+ struct ed *ed;
- //hcd->uses_new_polling = 1;
+ ed = ed_create(ahcd, PIPE_INTERRUPT, ED_DUMMY_INFO);
+ if (!ed)
+ goto err;
- /* Enable USB host mode */
- admhcd_reg_set(ahcd, ADMHCD_REG_CONTROL, ADMHCD_HOST_EN);
+ ahcd->ed_tails[PIPE_INTERRUPT] = ed;
- /* Set host specific settings */
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTHEAD, 0x00000000);
- admhcd_reg_set(ahcd, ADMHCD_REG_FMINTERVAL, 0x20002edf);
- admhcd_reg_set(ahcd, ADMHCD_REG_LSTHRESH, 0x628);
+ ed = ed_create(ahcd, PIPE_ISOCHRONOUS, ED_DUMMY_INFO);
+ if (!ed)
+ goto err;
- /* Set interrupts */
- admhcd_reg_set(ahcd, ADMHCD_REG_INTENABLE, ADMHCD_INT_ACT |
- ADMHCD_INT_FATAL | ADMHCD_INT_SW | ADMHCD_INT_TD);
- admhcd_reg_set(ahcd, ADMHCD_REG_INTSTATUS, ADMHCD_INT_ACT |
- ADMHCD_INT_FATAL | ADMHCD_INT_SW | ADMHCD_INT_TD);
+ ahcd->ed_tails[PIPE_ISOCHRONOUS] = ed;
+ ed->ed_prev = ahcd->ed_tails[PIPE_INTERRUPT];
+ ahcd->ed_tails[PIPE_INTERRUPT]->ed_next = ed;
+ ahcd->ed_tails[PIPE_INTERRUPT]->hwNextED = cpu_to_hc32(ahcd, ed->dma);
- /* Power on all ports */
- admhcd_reg_set(ahcd, ADMHCD_REG_RHDESCR, ADMHCD_NPS | ADMHCD_LPSC);
+ ed = ed_create(ahcd, PIPE_CONTROL, ED_DUMMY_INFO);
+ if (!ed)
+ goto err;
- /* HCD is now operationnal */
- admhcd_reg_set(ahcd, ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP);
+ ahcd->ed_tails[PIPE_CONTROL] = ed;
+ ed->ed_prev = ahcd->ed_tails[PIPE_ISOCHRONOUS];
+ ahcd->ed_tails[PIPE_ISOCHRONOUS]->ed_next = ed;
+ ahcd->ed_tails[PIPE_ISOCHRONOUS]->hwNextED = cpu_to_hc32(ahcd, ed->dma);
- hcd->state = HC_STATE_RUNNING;
+ ed = ed_create(ahcd, PIPE_BULK, ED_DUMMY_INFO);
+ if (!ed)
+ goto err;
- spin_unlock_irqrestore(&ahcd->lock, flags);
+ ahcd->ed_tails[PIPE_BULK] = ed;
+ ed->ed_prev = ahcd->ed_tails[PIPE_CONTROL];
+ ahcd->ed_tails[PIPE_CONTROL]->ed_next = ed;
+ ahcd->ed_tails[PIPE_CONTROL]->hwNextED = cpu_to_hc32(ahcd, ed->dma);
+
+ ahcd->ed_head = ahcd->ed_tails[PIPE_INTERRUPT];
+
+#ifdef ADMHC_VERBOSE_DEBUG
+ admhc_dump_ed(ahcd, "ed intr", ahcd->ed_tails[PIPE_INTERRUPT], 1);
+ admhc_dump_ed(ahcd, "ed isoc", ahcd->ed_tails[PIPE_ISOCHRONOUS], 1);
+ admhc_dump_ed(ahcd, "ed ctrl", ahcd->ed_tails[PIPE_CONTROL], 1);
+ admhc_dump_ed(ahcd, "ed bulk", ahcd->ed_tails[PIPE_BULK], 1);
+#endif
return 0;
+
+err:
+ admhc_eds_cleanup(ahcd);
+ return -ENOMEM;
}
-static int admhcd_sw_reset(struct admhcd *ahcd)
+/* init memory, and kick BIOS/SMM off */
+
+static int admhc_init(struct admhcd *ahcd)
{
- int retries = 15;
- unsigned long flags;
- int ret = 0;
+ struct usb_hcd *hcd = admhcd_to_hcd(ahcd);
+ int ret;
- spin_lock_irqsave(&ahcd->lock, flags);
+ admhc_disable(ahcd);
+ ahcd->regs = hcd->regs;
- admhcd_reg_set(ahcd, ADMHCD_REG_INTENABLE, 0);
- mdelay(10);
+ /* Disable HC interrupts */
+ admhc_intr_disable(ahcd, ADMHC_INTR_MIE);
- admhcd_reg_set(ahcd, ADMHCD_REG_CONTROL, ADMHCD_SW_RESET);
+ /* Read the number of ports unless overridden */
+ if (ahcd->num_ports == 0)
+ ahcd->num_ports = admhc_get_rhdesc(ahcd) & ADMHC_RH_NUMP;
- while (--retries) {
- mdelay(1);
- if (!(admhcd_reg_get(ahcd, ADMHCD_REG_CONTROL) & ADMHCD_SW_RESET))
- break;
- }
- if (!retries) {
- printk(KERN_WARNING "%s: software reset timeout\n", hcd_name);
- ret = -ETIME;
- }
- spin_unlock_irqrestore(&ahcd->lock, flags);
+ ret = admhc_mem_init(ahcd);
+ if (ret)
+ goto err;
+
+ /* init dummy endpoints */
+ ret = admhc_eds_init(ahcd);
+ if (ret)
+ goto err;
+
+ create_debug_files(ahcd);
+
+ return 0;
+
+err:
+ admhc_stop(hcd);
return ret;
}
-static int admhcd_reset(struct usb_hcd *hcd)
+/*-------------------------------------------------------------------------*/
+
+/* Start an OHCI controller, set the BUS operational
+ * resets USB and controller
+ * enable interrupts
+ */
+static int admhc_run(struct admhcd *ahcd)
{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- u32 state = 0;
- int ret, timeout = 15; /* ms */
- unsigned long t;
+ u32 temp;
+ int first = ahcd->fminterval == 0;
+ struct usb_hcd *hcd = admhcd_to_hcd(ahcd);
+
+ admhc_disable(ahcd);
+
+ /* boot firmware should have set this up (5.1.1.3.1) */
+ if (first) {
+ temp = admhc_readl(ahcd, &ahcd->regs->fminterval);
+ ahcd->fminterval = temp & ADMHC_SFI_FI_MASK;
+ if (ahcd->fminterval != FI)
+ admhc_dbg(ahcd, "fminterval delta %d\n",
+ ahcd->fminterval - FI);
+ ahcd->fminterval |=
+ (FSLDP (ahcd->fminterval) << ADMHC_SFI_FSLDP_SHIFT);
+ /* also: power/overcurrent flags in rhdesc */
+ }
- ret = admhcd_sw_reset(ahcd);
- if (ret)
- return ret;
-
- t = jiffies + msecs_to_jiffies(timeout);
- do {
- spin_lock_irq(&ahcd->lock);
- state = admhcd_reg_get(ahcd, ADMHCD_REG_HOSTCONTROL);
- spin_unlock_irq(&ahcd->lock);
- state &= ADMHCD_STATE_MASK;
- if (state == ADMHCD_STATE_RST)
- break;
- msleep(4);
- } while (time_before_eq(jiffies, t));
+#if 0 /* TODO: not applicable */
+ /* Reset USB nearly "by the book". RemoteWakeupConnected was
+ * saved if boot firmware (BIOS/SMM/...) told us it's connected,
+ * or if bus glue did the same (e.g. for PCI add-in cards with
+ * PCI PM support).
+ */
+ if ((ahcd->hc_control & OHCI_CTRL_RWC) != 0
+ && !device_may_wakeup(hcd->self.controller))
+ device_init_wakeup(hcd->self.controller, 1);
+#endif
- if (state != ADMHCD_STATE_RST) {
- printk(KERN_WARNING "%s: device not ready after %dms\n",
- hcd_name, timeout);
- ret = -ENODEV;
+ switch (ahcd->host_control & ADMHC_HC_BUSS) {
+ case ADMHC_BUSS_OPER:
+ temp = 0;
+ break;
+ case ADMHC_BUSS_SUSPEND:
+ /* FALLTHROUGH ? */
+ case ADMHC_BUSS_RESUME:
+ ahcd->host_control = ADMHC_BUSS_RESUME;
+ temp = 10 /* msec wait */;
+ break;
+ /* case ADMHC_BUSS_RESET: */
+ default:
+ ahcd->host_control = ADMHC_BUSS_RESET;
+ temp = 50 /* msec wait */;
+ break;
+ }
+ admhc_writel(ahcd, ahcd->host_control, &ahcd->regs->host_control);
+
+ /* flush the writes */
+ admhc_writel_flush(ahcd);
+
+ msleep(temp);
+ temp = admhc_get_rhdesc(ahcd);
+ if (!(temp & ADMHC_RH_NPS)) {
+ /* power down each port */
+ for (temp = 0; temp < ahcd->num_ports; temp++)
+ admhc_writel(ahcd, ADMHC_PS_CPP,
+ &ahcd->regs->portstatus[temp]);
+ }
+ /* flush those writes */
+ admhc_writel_flush(ahcd);
+
+ /* 2msec timelimit here means no irqs/preempt */
+ spin_lock_irq(&ahcd->lock);
+
+retry:
+ admhc_writel(ahcd, ADMHC_CTRL_SR, &ahcd->regs->gencontrol);
+ temp = 30; /* ... allow extra time */
+ while ((admhc_readl(ahcd, &ahcd->regs->gencontrol) & ADMHC_CTRL_SR) != 0) {
+ if (--temp == 0) {
+ spin_unlock_irq(&ahcd->lock);
+ admhc_err(ahcd, "USB HC reset timed out!\n");
+ return -1;
+ }
+ udelay (1);
}
- return ret;
-}
+ /* enable HOST mode, before access any host specific register */
+ admhc_writel(ahcd, ADMHC_CTRL_UHFE, &ahcd->regs->gencontrol);
-static void admhcd_stop(struct usb_hcd *hcd)
-{
- struct admhcd *ahcd = hcd_to_admhcd(hcd);
- unsigned long flags;
- u32 val;
+ /* Tell the controller where the descriptor list is */
+ admhc_writel(ahcd, (u32)ahcd->ed_head->dma, &ahcd->regs->hosthead);
- spin_lock_irqsave(&ahcd->lock, flags);
- admhcd_reg_set(ahcd, ADMHCD_REG_INTENABLE, 0);
+ periodic_reinit(ahcd);
- /* Set global control of power for ports */
- val = admhcd_reg_get(ahcd, ADMHCD_REG_RHDESCR);
- val &= (~ADMHCD_PSM | ADMHCD_LPS);
- admhcd_reg_set(ahcd, ADMHCD_REG_RHDESCR, val);
+ /* use rhsc irqs after khubd is fully initialized */
+ hcd->poll_rh = 1;
+ hcd->uses_new_polling = 1;
- spin_unlock_irqrestore(&ahcd->lock, flags);
+#if 0
+ /* wake on ConnectStatusChange, matching external hubs */
+ admhc_writel(ahcd, RH_HS_DRWE, &ahcd->regs->roothub.status);
+#else
+ /* FIXME roothub_write_status (ahcd, ADMHC_RH_DRWE); */
+#endif
- /* Ask for software reset */
- admhcd_sw_reset(ahcd);
-}
+ /* Choose the interrupts we care about now, others later on demand */
+ admhc_intr_ack(ahcd, ~0);
+ admhc_intr_enable(ahcd, ADMHC_INTR_INIT);
+ admhc_writel(ahcd, ADMHC_RH_NPS | ADMHC_RH_LPSC, &ahcd->regs->rhdesc);
-static struct hc_driver adm5120_hc_driver = {
- .description = hcd_name,
- .product_desc = "ADM5120 HCD",
- .hcd_priv_size = sizeof(struct admhcd),
- .irq = admhcd_irq,
- .flags = HCD_USB11,
- .urb_enqueue = admhcd_urb_enqueue,
- .urb_dequeue = admhcd_urb_dequeue,
- .endpoint_disable = admhcd_endpoint_disable,
- .get_frame_number = admhcd_get_frame_number,
- .hub_status_data = admhcd_hub_status_data,
- .hub_control = admhcd_hub_control,
- .start = admhcd_start,
- .stop = admhcd_stop,
- .reset = admhcd_reset,
-};
-
-#define resource_len(r) (((r)->end - (r)->start) + 1)
-
-static int __init adm5120hcd_probe(struct platform_device *pdev)
-{
- struct usb_hcd *hcd;
- struct admhcd *ahcd;
- struct resource *data;
- void __iomem *data_reg;
+ /* flush those writes */
+ admhc_writel_flush(ahcd);
- int err = 0, irq;
+ /* start controller operations */
+ ahcd->host_control = ADMHC_BUSS_OPER;
+ admhc_writel(ahcd, ahcd->host_control, &ahcd->regs->host_control);
- if (pdev->num_resources < 2) {
- printk(KERN_WARNING PFX "not enough resources\n");
- err = -ENODEV;
- goto out;
+ temp = 20;
+ while ((admhc_readl(ahcd, &ahcd->regs->host_control)
+ & ADMHC_HC_BUSS) != ADMHC_BUSS_OPER) {
+ if (--temp == 0) {
+ spin_unlock_irq(&ahcd->lock);
+ admhc_err(ahcd, "unable to setup operational mode!\n");
+ return -1;
+ }
+ mdelay(1);
}
- irq = platform_get_irq(pdev, 0);
- data = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ hcd->state = HC_STATE_RUNNING;
- if (pdev->dev.dma_mask) {
- printk(KERN_DEBUG PFX "no we won't dma\n");
- return -EINVAL;
+ ahcd->next_statechange = jiffies + STATECHANGE_DELAY;
+
+#if 0
+ /* FIXME: enabling DMA is always failed here for an unknown reason */
+ admhc_dma_enable(ahcd);
+
+ temp = 200;
+ while ((admhc_readl(ahcd, &ahcd->regs->host_control)
+ & ADMHC_HC_DMAE) != ADMHC_HC_DMAE) {
+ if (--temp == 0) {
+ spin_unlock_irq(&ahcd->lock);
+ admhc_err(ahcd, "unable to enable DMA!\n");
+ admhc_dump(ahcd, 1);
+ return -1;
+ }
+ mdelay(1);
}
- if (!data || irq < 0) {
- printk(KERN_DEBUG PFX "either IRQ or data resource is invalid\n");
- err = -ENODEV;
- goto out;
+#endif
+
+ spin_unlock_irq(&ahcd->lock);
+
+ mdelay(ADMHC_POTPGT);
+
+ return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* an interrupt happens */
+
+static irqreturn_t admhc_irq(struct usb_hcd *hcd)
+{
+ struct admhcd *ahcd = hcd_to_admhcd(hcd);
+ struct admhcd_regs __iomem *regs = ahcd->regs;
+ u32 ints;
+
+ ints = admhc_readl(ahcd, ®s->int_status);
+ if ((ints & ADMHC_INTR_INTA) == 0) {
+ /* no unmasked interrupt status is set */
+ return IRQ_NONE;
}
- if (!request_mem_region(data->start, resource_len(data), hcd_name)) {
- printk(KERN_DEBUG PFX "cannot request memory regions for the data resource\n");
- err = -EBUSY;
- goto out;
+ ints &= admhc_readl(ahcd, ®s->int_enable);
+
+ if (ints & ADMHC_INTR_FATI) {
+ /* e.g. due to PCI Master/Target Abort */
+ admhc_disable(ahcd);
+ admhc_err(ahcd, "Fatal Error, controller disabled\n");
+ admhc_dump(ahcd, 1);
+ admhc_usb_reset(ahcd);
}
- data_reg = ioremap(data->start, resource_len(data));
- if (data_reg == NULL) {
- printk(KERN_DEBUG PFX "unable to ioremap\n");
- err = -ENOMEM;
- goto out_mem;
- }
-
- hcd = usb_create_hcd(&adm5120_hc_driver, &pdev->dev, pdev->dev.bus_id);
- if (!hcd) {
- printk(KERN_DEBUG PFX "unable to create the hcd\n");
- err = -ENOMEM;
- goto out_unmap;
+ if (ints & ADMHC_INTR_INSM) {
+ admhc_vdbg(ahcd, "Root Hub Status Change\n");
+ ahcd->next_statechange = jiffies + STATECHANGE_DELAY;
+ admhc_intr_ack(ahcd, ADMHC_INTR_RESI | ADMHC_INTR_INSM);
+
+ /* NOTE: Vendors didn't always make the same implementation
+ * choices for RHSC. Many followed the spec; RHSC triggers
+ * on an edge, like setting and maybe clearing a port status
+ * change bit. With others it's level-triggered, active
+ * until khubd clears all the port status change bits. We'll
+ * always disable it here and rely on polling until khubd
+ * re-enables it.
+ */
+ admhc_intr_disable(ahcd, ADMHC_INTR_INSM);
+ usb_hcd_poll_rh_status(hcd);
+ } else if (ints & ADMHC_INTR_RESI) {
+ /* For connect and disconnect events, we expect the controller
+ * to turn on RHSC along with RD. But for remote wakeup events
+ * this might not happen.
+ */
+ admhc_vdbg(ahcd, "Resume Detect\n");
+ admhc_intr_ack(ahcd, ADMHC_INTR_RESI);
+ hcd->poll_rh = 1;
+ if (ahcd->autostop) {
+ spin_lock(&ahcd->lock);
+ admhc_rh_resume(ahcd);
+ spin_unlock(&ahcd->lock);
+ } else
+ usb_hcd_resume_root_hub(hcd);
}
- hcd->rsrc_start = data->start;
- hcd->rsrc_len = resource_len(data);
- hcd->regs = data_reg;
+ if (ints & ADMHC_INTR_TDC) {
+ admhc_vdbg(ahcd, "Transfer Descriptor Complete\n");
+ admhc_intr_ack(ahcd, ADMHC_INTR_TDC);
+ if (HC_IS_RUNNING(hcd->state))
+ admhc_intr_disable(ahcd, ADMHC_INTR_TDC);
+ spin_lock(&ahcd->lock);
+ admhc_td_complete(ahcd);
+ spin_unlock(&ahcd->lock);
+ if (HC_IS_RUNNING(hcd->state))
+ admhc_intr_enable(ahcd, ADMHC_INTR_TDC);
+ }
- ahcd = hcd_to_admhcd(hcd);
- ahcd->base = (u32)data_reg;
+ if (ints & ADMHC_INTR_SO) {
+ /* could track INTR_SO to reduce available PCI/... bandwidth */
+ admhc_vdbg(ahcd, "Schedule Overrun\n");
+ }
- spin_lock_init(&ahcd->lock);
- INIT_LIST_HEAD(&ahcd->async);
+ if (ints & ADMHC_INTR_BABI) {
+ admhc_intr_disable(ahcd, ADMHC_INTR_BABI);
+ admhc_intr_ack(ahcd, ADMHC_INTR_BABI);
+ admhc_err(ahcd, "Babble Detected\n");
+ }
- hcd->product_desc = "ADM5120 HCD";
+#if 1
+ spin_lock(&ahcd->lock);
+ if (ahcd->ed_rm_list)
+ finish_unlinks(ahcd, admhc_frame_no(ahcd));
- err = usb_add_hcd(hcd, irq, IRQF_DISABLED);
- if (err) {
- printk(KERN_DEBUG PFX "unable to add hcd\n");
- goto out_dev;
+ if ((ints & ADMHC_INTR_SOFI) != 0 && !ahcd->ed_rm_list
+ && HC_IS_RUNNING(hcd->state))
+ admhc_intr_disable(ahcd, ADMHC_INTR_SOFI);
+ spin_unlock(&ahcd->lock);
+#else
+ if (ints & ADMHC_INTR_SOFI) {
+ admhc_vdbg(ahcd, "Start Of Frame\n");
+ spin_lock(&ahcd->lock);
+
+ /* handle any pending ED removes */
+ finish_unlinks(ahcd, admhc_frameno(ahcd));
+
+ /* leaving INTR_SOFI enabled when there's still unlinking
+ * to be done in the (next frame).
+ */
+ if ((ahcd->ed_rm_list == NULL) ||
+ HC_IS_RUNNING(hcd->state) == 0)
+ /*
+ * disable INTR_SOFI if there are no unlinking to be
+ * done (in the next frame)
+ */
+ admhc_intr_disable(ahcd, ADMHC_INTR_SOFI);
+
+ spin_unlock(&ahcd->lock);
}
+#endif
- return 0;
+ if (HC_IS_RUNNING(hcd->state)) {
+ admhc_intr_ack(ahcd, ints);
+ admhc_intr_enable(ahcd, ADMHC_INTR_MIE);
+ admhc_writel_flush(ahcd);
+ }
-out_dev:
- usb_put_hcd(hcd);
-out_unmap:
- iounmap(data_reg);
-out_mem:
- release_mem_region(data->start, resource_len(data));
-out:
- return err;
+ return IRQ_HANDLED;
}
-#ifdef CONFIG_PM
-static int adm5120hcd_suspend(struct platform_device *pdev, pm_message_t state)
+/*-------------------------------------------------------------------------*/
+
+static void admhc_stop(struct usb_hcd *hcd)
{
- pdev->dev.power.power_state = state;
- mdelay(1);
- return 0;
+ struct admhcd *ahcd = hcd_to_admhcd(hcd);
+
+ admhc_dump(ahcd, 1);
+
+ flush_scheduled_work();
+
+ admhc_usb_reset(ahcd);
+ admhc_intr_disable(ahcd, ADMHC_INTR_MIE);
+
+ free_irq(hcd->irq, hcd);
+ hcd->irq = -1;
+
+ remove_debug_files(ahcd);
+ admhc_eds_cleanup(ahcd);
+ admhc_mem_cleanup(ahcd);
}
-static int adm5120hcd_resume(struct platform_device *pdev, pm_message_t state)
+/*-------------------------------------------------------------------------*/
+
+/* must not be called from interrupt context */
+
+#ifdef CONFIG_PM
+
+static int admhc_restart(struct admhcd *ahcd)
{
- pdev->dev.power.power_state = PMSG_ON;
- mdelay(1);
+ int temp;
+ int i;
+ struct urb_priv *priv;
+
+ /* mark any devices gone, so they do nothing till khubd disconnects.
+ * recycle any "live" eds/tds (and urbs) right away.
+ * later, khubd disconnect processing will recycle the other state,
+ * (either as disconnect/reconnect, or maybe someday as a reset).
+ */
+ spin_lock_irq(&ahcd->lock);
+ admhc_disable(ahcd);
+ usb_root_hub_lost_power(admhcd_to_hcd(ahcd)->self.root_hub);
+ if (!list_empty(&ahcd->pending))
+ admhc_dbg(ahcd, "abort schedule...\n");
+ list_for_each_entry (priv, &ahcd->pending, pending) {
+ struct urb *urb = priv->td[0]->urb;
+ struct ed *ed = priv->ed;
+
+ switch (ed->state) {
+ case ED_OPER:
+ ed->state = ED_UNLINK;
+ ed->hwINFO |= cpu_to_hc32(ahcd, ED_DEQUEUE);
+ ed_deschedule (ahcd, ed);
+
+ ed->ed_next = ahcd->ed_rm_list;
+ ed->ed_prev = NULL;
+ ahcd->ed_rm_list = ed;
+ /* FALLTHROUGH */
+ case ED_UNLINK:
+ break;
+ default:
+ admhc_dbg(ahcd, "bogus ed %p state %d\n",
+ ed, ed->state);
+ }
+
+ spin_lock(&urb->lock);
+ urb->status = -ESHUTDOWN;
+ spin_unlock(&urb->lock);
+ }
+ finish_unlinks (ahcd, 0);
+ spin_unlock_irq(&ahcd->lock);
+
+ /* paranoia, in case that didn't work: */
+
+ /* empty the interrupt branches */
+ for (i = 0; i < NUM_INTS; i++) ahcd->load[i] = 0;
+ for (i = 0; i < NUM_INTS; i++) ahcd->hcca->int_table[i] = 0;
+
+ /* no EDs to remove */
+ ahcd->ed_rm_list = NULL;
+
+ /* empty control and bulk lists */
+ ahcd->ed_controltail = NULL;
+ ahcd->ed_bulktail = NULL;
+
+ if ((temp = admhc_run(ahcd)) < 0) {
+ admhc_err(ahcd, "can't restart, %d\n", temp);
+ return temp;
+ } else {
+ /* here we "know" root ports should always stay powered,
+ * and that if we try to turn them back on the root hub
+ * will respond to CSC processing.
+ */
+ i = ahcd->num_ports;
+ while (i--)
+ admhc_writel(ahcd, RH_PS_PSS,
+ &ahcd->regs->portstatus[i]);
+ admhc_dbg(ahcd, "restart complete\n");
+ }
return 0;
}
-#else
-#define adm5120hcd_suspend NULL
-#define adm5120hcd_resume NULL
#endif
-static int __init_or_module adm5120hcd_remove(struct platform_device *pdev)
-{
- struct usb_hcd *hcd = platform_get_drvdata(pdev);
- struct admhcd *ahcd;
+/*-------------------------------------------------------------------------*/
- if (!hcd)
- return 0;
- ahcd = hcd_to_admhcd(hcd);
- usb_remove_hcd(hcd);
+#ifdef CONFIG_MIPS_ADM5120
+#include "adm5120-drv.c"
+#define PLATFORM_DRIVER usb_hcd_adm5120_driver
+#endif
- usb_put_hcd(hcd);
- return 0;
-}
+#if !defined(PLATFORM_DRIVER)
+#error "missing bus glue for admhc-hcd"
+#endif
+
+#define DRIVER_INFO DRIVER_DESC " " DRIVER_VERSION
-static struct platform_driver adm5120hcd_driver = {
- .probe = adm5120hcd_probe,
- .remove = adm5120hcd_remove,
- .suspend = adm5120hcd_suspend,
- .remove = adm5120hcd_resume,
- .driver = {
- .name = (char *)hcd_name,
- .owner = THIS_MODULE,
- },
-};
-
-static int __init adm5120hcd_init(void)
+static int __init admhc_hcd_mod_init(void)
{
- int ret;
+ int retval = 0;
- if (usb_disabled()) {
- printk(KERN_DEBUG PFX "USB support is disabled\n");
+ if (usb_disabled())
return -ENODEV;
- }
- if (mips_machgroup != MACH_GROUP_ADM5120) {
- printk(KERN_DEBUG PFX "unsupported machine group\n");
- return -ENODEV;
- }
+ pr_info("%s: " DRIVER_INFO "\n", hcd_name);
+ pr_info("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
+ sizeof (struct ed), sizeof (struct td));
- ret = platform_driver_register(&adm5120hcd_driver);
- if (ret == 0)
- printk(KERN_INFO PFX "registered\n");
+#ifdef PLATFORM_DRIVER
+ retval = platform_driver_register(&PLATFORM_DRIVER);
+ if (retval < 0)
+ goto error_platform;
+#endif
- return ret;
+ return retval;
+
+#ifdef PLATFORM_DRIVER
+ platform_driver_unregister(&PLATFORM_DRIVER);
+error_platform:
+#endif
+ return retval;
}
+module_init(admhc_hcd_mod_init);
-static void __exit adm5120hcd_exit(void)
+static void __exit admhc_hcd_mod_exit(void)
{
- platform_driver_unregister(&adm5120hcd_driver);
- printk(KERN_INFO PFX "driver unregistered\n");
+ platform_driver_unregister(&PLATFORM_DRIVER);
}
+module_exit(admhc_hcd_mod_exit);
-module_init(adm5120hcd_init);
-module_exit(adm5120hcd_exit);
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_INFO);
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2004 David Brownell <dbrownell@users.sourceforge.net>
+ *
+ * This file is licenced under GPL
+ */
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * OHCI Root Hub ... the nonsharable stuff
+ */
+
+#define dbg_port(hc,label,num,value) \
+ admhc_dbg(hc, \
+ "%s port%d " \
+ "= 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \
+ label, num, temp, \
+ (temp & ADMHC_PS_PRSC) ? " PRSC" : "", \
+ (temp & ADMHC_PS_OCIC) ? " OCIC" : "", \
+ (temp & ADMHC_PS_PSSC) ? " PSSC" : "", \
+ (temp & ADMHC_PS_PESC) ? " PESC" : "", \
+ (temp & ADMHC_PS_CSC) ? " CSC" : "", \
+ \
+ (temp & ADMHC_PS_LSDA) ? " LSDA" : "", \
+ (temp & ADMHC_PS_PPS) ? " PPS" : "", \
+ (temp & ADMHC_PS_PRS) ? " PRS" : "", \
+ (temp & ADMHC_PS_POCI) ? " POCI" : "", \
+ (temp & ADMHC_PS_PSS) ? " PSS" : "", \
+ \
+ (temp & ADMHC_PS_PES) ? " PES" : "", \
+ (temp & ADMHC_PS_CCS) ? " CCS" : "" \
+ );
+
+#define dbg_port_write(hc,label,num,value) \
+ admhc_dbg(hc, \
+ "%s port%d " \
+ "= 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \
+ label, num, temp, \
+ (temp & ADMHC_PS_PRSC) ? " PRSC" : "", \
+ (temp & ADMHC_PS_OCIC) ? " OCIC" : "", \
+ (temp & ADMHC_PS_PSSC) ? " PSSC" : "", \
+ (temp & ADMHC_PS_PESC) ? " PESC" : "", \
+ (temp & ADMHC_PS_CSC) ? " CSC" : "", \
+ \
+ (temp & ADMHC_PS_CPP) ? " CPP" : "", \
+ (temp & ADMHC_PS_SPP) ? " SPP" : "", \
+ (temp & ADMHC_PS_SPR) ? " SPR" : "", \
+ (temp & ADMHC_PS_CPS) ? " CPS" : "", \
+ (temp & ADMHC_PS_SPS) ? " SPS" : "", \
+ \
+ (temp & ADMHC_PS_SPE) ? " SPE" : "", \
+ (temp & ADMHC_PS_CPE) ? " CPE" : "" \
+ );
+
+/*-------------------------------------------------------------------------*/
+
+/* hcd->hub_irq_enable() */
+static void admhc_rhsc_enable(struct usb_hcd *hcd)
+{
+ struct admhcd *ahcd = hcd_to_admhcd(hcd);
+
+ spin_lock_irq(&ahcd->lock);
+ if (!ahcd->autostop)
+ del_timer(&hcd->rh_timer); /* Prevent next poll */
+ admhc_intr_enable(ahcd, ADMHC_INTR_INSM);
+ spin_unlock_irq(&ahcd->lock);
+}
+
+#define OHCI_SCHED_ENABLES \
+ (OHCI_CTRL_CLE|OHCI_CTRL_BLE|OHCI_CTRL_PLE|OHCI_CTRL_IE)
+
+#ifdef CONFIG_PM
+static int admhc_restart(struct admhcd *ahcd);
+
+static int admhc_rh_suspend(struct admhcd *ahcd, int autostop)
+__releases(ahcd->lock)
+__acquires(ahcd->lock)
+{
+ int status = 0;
+
+ ahcd->hc_control = admhc_readl(ahcd, &ahcd->regs->control);
+ switch (ahcd->hc_control & OHCI_CTRL_HCFS) {
+ case OHCI_USB_RESUME:
+ admhc_dbg(ahcd, "resume/suspend?\n");
+ ahcd->hc_control &= ~OHCI_CTRL_HCFS;
+ ahcd->hc_control |= OHCI_USB_RESET;
+ admhc_writel(ahcd, ahcd->hc_control, &ahcd->ahcd->regs->control);
+ (void) admhc_readl(ahcd, &ahcd->regs->control);
+ /* FALL THROUGH */
+ case OHCI_USB_RESET:
+ status = -EBUSY;
+ admhc_dbg(ahcd, "needs reinit!\n");
+ goto done;
+ case OHCI_USB_SUSPEND:
+ if (!ahcd->autostop) {
+ admhc_dbg(ahcd, "already suspended\n");
+ goto done;
+ }
+ }
+ admhc_dbg(ahcd, "%s root hub\n",
+ autostop ? "auto-stop" : "suspend");
+
+ /* First stop any processing */
+ if (!autostop && (ahcd->hc_control & OHCI_SCHED_ENABLES)) {
+ ahcd->hc_control &= ~OHCI_SCHED_ENABLES;
+ admhc_writel(ahcd, ahcd->hc_control, &ahcd->ahcd->regs->control);
+ ahcd->hc_control = admhc_readl(ahcd, &ahcd->regs->control);
+ admhc_writel(ahcd, OHCI_INTR_SF, &ahcd->regs->intrstatus);
+
+ /* sched disables take effect on the next frame,
+ * then the last WDH could take 6+ msec
+ */
+ admhc_dbg(ahcd, "stopping schedules ...\n");
+ ahcd->autostop = 0;
+ spin_unlock_irq (&ahcd->lock);
+ msleep (8);
+ spin_lock_irq (&ahcd->lock);
+ }
+ dl_done_list (ahcd);
+ finish_unlinks (ahcd, admhc_frame_no(ahcd));
+
+ /* maybe resume can wake root hub */
+ if (device_may_wakeup(&admhcd_to_hcd(ahcd)->self.root_hub->dev) ||
+ autostop)
+ ahcd->hc_control |= OHCI_CTRL_RWE;
+ else {
+ admhc_writel(ahcd, OHCI_INTR_RHSC, &ahcd->regs->intrdisable);
+ ahcd->hc_control &= ~OHCI_CTRL_RWE;
+ }
+
+ /* Suspend hub ... this is the "global (to this bus) suspend" mode,
+ * which doesn't imply ports will first be individually suspended.
+ */
+ ahcd->hc_control &= ~OHCI_CTRL_HCFS;
+ ahcd->hc_control |= OHCI_USB_SUSPEND;
+ admhc_writel(ahcd, ahcd->hc_control, &ahcd->ahcd->regs->control);
+ (void) admhc_readl(ahcd, &ahcd->regs->control);
+
+ /* no resumes until devices finish suspending */
+ if (!autostop) {
+ ahcd->next_statechange = jiffies + msecs_to_jiffies (5);
+ ahcd->autostop = 0;
+ }
+
+done:
+ return status;
+}
+
+static inline struct ed *find_head(struct ed *ed)
+{
+ /* for bulk and control lists */
+ while (ed->ed_prev)
+ ed = ed->ed_prev;
+ return ed;
+}
+
+/* caller has locked the root hub */
+static int admhc_rh_resume(struct admhcd *ahcd)
+__releases(ahcd->lock)
+__acquires(ahcd->lock)
+{
+ struct usb_hcd *hcd = admhcd_to_hcd (ahcd);
+ u32 temp, enables;
+ int status = -EINPROGRESS;
+ int autostopped = ahcd->autostop;
+
+ ahcd->autostop = 0;
+ ahcd->hc_control = admhc_readl(ahcd, &ahcd->regs->control);
+
+ if (ahcd->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) {
+ /* this can happen after resuming a swsusp snapshot */
+ if (hcd->state == HC_STATE_RESUMING) {
+ admhc_dbg(ahcd, "BIOS/SMM active, control %03x\n",
+ ahcd->hc_control);
+ status = -EBUSY;
+ /* this happens when pmcore resumes HC then root */
+ } else {
+ admhc_dbg(ahcd, "duplicate resume\n");
+ status = 0;
+ }
+ } else switch (ahcd->hc_control & OHCI_CTRL_HCFS) {
+ case OHCI_USB_SUSPEND:
+ ahcd->hc_control &= ~(OHCI_CTRL_HCFS|OHCI_SCHED_ENABLES);
+ ahcd->hc_control |= OHCI_USB_RESUME;
+ admhc_writel(ahcd, ahcd->hc_control, &ahcd->ahcd->regs->control);
+ (void) admhc_readl(ahcd, &ahcd->regs->control);
+ admhc_dbg(ahcd, "%s root hub\n",
+ autostopped ? "auto-start" : "resume");
+ break;
+ case OHCI_USB_RESUME:
+ /* HCFS changes sometime after INTR_RD */
+ admhc_dbg(ahcd, "%swakeup root hub\n",
+ autostopped ? "auto-" : "");
+ break;
+ case OHCI_USB_OPER:
+ /* this can happen after resuming a swsusp snapshot */
+ admhc_dbg(ahcd, "snapshot resume? reinit\n");
+ status = -EBUSY;
+ break;
+ default: /* RESET, we lost power */
+ admhc_dbg(ahcd, "lost power\n");
+ status = -EBUSY;
+ }
+ if (status == -EBUSY) {
+ if (!autostopped) {
+ spin_unlock_irq (&ahcd->lock);
+ (void) ahcd_init (ahcd);
+ status = admhc_restart (ahcd);
+ spin_lock_irq (&ahcd->lock);
+ }
+ return status;
+ }
+ if (status != -EINPROGRESS)
+ return status;
+ if (autostopped)
+ goto skip_resume;
+ spin_unlock_irq (&ahcd->lock);
+
+ /* Some controllers (lucent erratum) need extra-long delays */
+ msleep (20 /* usb 11.5.1.10 */ + 12 /* 32 msec counter */ + 1);
+
+ temp = admhc_readl(ahcd, &ahcd->regs->control);
+ temp &= OHCI_CTRL_HCFS;
+ if (temp != OHCI_USB_RESUME) {
+ admhc_err (ahcd, "controller won't resume\n");
+ spin_lock_irq(&ahcd->lock);
+ return -EBUSY;
+ }
+
+ /* disable old schedule state, reinit from scratch */
+ admhc_writel(ahcd, 0, &ahcd->regs->ed_controlhead);
+ admhc_writel(ahcd, 0, &ahcd->regs->ed_controlcurrent);
+ admhc_writel(ahcd, 0, &ahcd->regs->ed_bulkhead);
+ admhc_writel(ahcd, 0, &ahcd->regs->ed_bulkcurrent);
+ admhc_writel(ahcd, 0, &ahcd->regs->ed_periodcurrent);
+ admhc_writel(ahcd, (u32) ahcd->hcca_dma, &ahcd->ahcd->regs->hcca);
+
+ /* Sometimes PCI D3 suspend trashes frame timings ... */
+ periodic_reinit(ahcd);
+
+ /* the following code is executed with ahcd->lock held and
+ * irqs disabled if and only if autostopped is true
+ */
+
+skip_resume:
+ /* interrupts might have been disabled */
+ admhc_writel(ahcd, OHCI_INTR_INIT, &ahcd->regs->int_enable);
+ if (ahcd->ed_rm_list)
+ admhc_writel(ahcd, OHCI_INTR_SF, &ahcd->regs->int_enable);
+
+ /* Then re-enable operations */
+ admhc_writel(ahcd, OHCI_USB_OPER, &ahcd->regs->control);
+ (void) admhc_readl(ahcd, &ahcd->regs->control);
+ if (!autostopped)
+ msleep (3);
+
+ temp = ahcd->hc_control;
+ temp &= OHCI_CTRL_RWC;
+ temp |= OHCI_CONTROL_INIT | OHCI_USB_OPER;
+ ahcd->hc_control = temp;
+ admhc_writel(ahcd, temp, &ahcd->regs->control);
+ (void) admhc_readl(ahcd, &ahcd->regs->control);
+
+ /* TRSMRCY */
+ if (!autostopped) {
+ msleep (10);
+ spin_lock_irq (&ahcd->lock);
+ }
+ /* now ahcd->lock is always held and irqs are always disabled */
+
+ /* keep it alive for more than ~5x suspend + resume costs */
+ ahcd->next_statechange = jiffies + STATECHANGE_DELAY;
+
+ /* maybe turn schedules back on */
+ enables = 0;
+ temp = 0;
+ if (!ahcd->ed_rm_list) {
+ if (ahcd->ed_controltail) {
+ admhc_writel(ahcd,
+ find_head (ahcd->ed_controltail)->dma,
+ &ahcd->regs->ed_controlhead);
+ enables |= OHCI_CTRL_CLE;
+ temp |= OHCI_CLF;
+ }
+ if (ahcd->ed_bulktail) {
+ admhc_writel(ahcd, find_head (ahcd->ed_bulktail)->dma,
+ &ahcd->regs->ed_bulkhead);
+ enables |= OHCI_CTRL_BLE;
+ temp |= OHCI_BLF;
+ }
+ }
+ if (hcd->self.bandwidth_isoc_reqs || hcd->self.bandwidth_int_reqs)
+ enables |= OHCI_CTRL_PLE|OHCI_CTRL_IE;
+ if (enables) {
+ admhc_dbg(ahcd, "restarting schedules ... %08x\n", enables);
+ ahcd->hc_control |= enables;
+ admhc_writel(ahcd, ahcd->hc_control, &ahcd->ahcd->regs->control);
+ if (temp)
+ admhc_writel(ahcd, temp, &ahcd->regs->cmdstatus);
+ (void) admhc_readl(ahcd, &ahcd->regs->control);
+ }
+
+ return 0;
+}
+
+static int admhc_bus_suspend(struct usb_hcd *hcd)
+{
+ struct admhcd *ahcd = hcd_to_admhcd(hcd);
+ int rc;
+
+ spin_lock_irq(&ahcd->lock);
+
+ if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)))
+ rc = -ESHUTDOWN;
+ else
+ rc = admhc_rh_suspend (ahcd, 0);
+ spin_unlock_irq(&ahcd->lock);
+ return rc;
+}
+
+static int admhc_bus_resume(struct usb_hcd *hcd)
+{
+ struct admhcd *ahcd = hcd_to_admhcd(hcd);
+ int rc;
+
+ if (time_before(jiffies, ahcd->next_statechange))
+ msleep(5);
+
+ spin_lock_irq (&ahcd->lock);
+
+ if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)))
+ rc = -ESHUTDOWN;
+ else
+ rc = admhc_rh_resume (ahcd);
+ spin_unlock_irq(&ahcd->lock);
+
+ /* poll until we know a device is connected or we autostop */
+ if (rc == 0)
+ usb_hcd_poll_rh_status(hcd);
+ return rc;
+}
+
+/* Carry out polling-, autostop-, and autoresume-related state changes */
+static int admhc_root_hub_state_changes(struct admhcd *ahcd, int changed,
+ int any_connected)
+{
+ int poll_rh = 1;
+
+ switch (ahcd->hc_control & OHCI_CTRL_HCFS) {
+
+ case OHCI_USB_OPER:
+ /* keep on polling until we know a device is connected
+ * and RHSC is enabled */
+ if (!ahcd->autostop) {
+ if (any_connected ||
+ !device_may_wakeup(&admhcd_to_hcd(ahcd)
+ ->self.root_hub->dev)) {
+ if (admhc_readl(ahcd, &ahcd->regs->int_enable) &
+ OHCI_INTR_RHSC)
+ poll_rh = 0;
+ } else {
+ ahcd->autostop = 1;
+ ahcd->next_statechange = jiffies + HZ;
+ }
+
+ /* if no devices have been attached for one second, autostop */
+ } else {
+ if (changed || any_connected) {
+ ahcd->autostop = 0;
+ ahcd->next_statechange = jiffies +
+ STATECHANGE_DELAY;
+ } else if (time_after_eq(jiffies,
+ ahcd->next_statechange)
+ && !ahcd->ed_rm_list
+ && !(ahcd->hc_control &
+ OHCI_SCHED_ENABLES)) {
+ ahcd_rh_suspend(ahcd, 1);
+ }
+ }
+ break;
+
+ /* if there is a port change, autostart or ask to be resumed */
+ case OHCI_USB_SUSPEND:
+ case OHCI_USB_RESUME:
+ if (changed) {
+ if (ahcd->autostop)
+ admhc_rh_resume(ahcd);
+ else
+ usb_hcd_resume_root_hub(admhcd_to_hcd(ahcd));
+ } else {
+ /* everything is idle, no need for polling */
+ poll_rh = 0;
+ }
+ break;
+ }
+ return poll_rh;
+}
+
+#else /* CONFIG_PM */
+
+static inline int admhc_rh_resume(struct admhcd *ahcd)
+{
+ return 0;
+}
+
+/* Carry out polling-related state changes.
+ * autostop isn't used when CONFIG_PM is turned off.
+ */
+static int admhc_root_hub_state_changes(struct admhcd *ahcd, int changed,
+ int any_connected)
+{
+ int poll_rh = 1;
+
+ /* keep on polling until RHSC is enabled */
+ if (admhc_readl(ahcd, &ahcd->regs->int_enable) & ADMHC_INTR_INSM)
+ poll_rh = 0;
+
+ return poll_rh;
+}
+
+#endif /* CONFIG_PM */
+
+/*-------------------------------------------------------------------------*/
+
+/* build "status change" packet (one or two bytes) from HC registers */
+
+static int
+admhc_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+ struct admhcd *ahcd = hcd_to_admhcd(hcd);
+ int i, changed = 0, length = 1;
+ int any_connected = 0;
+ unsigned long flags;
+ u32 status;
+
+ spin_lock_irqsave(&ahcd->lock, flags);
+ if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))
+ goto done;
+
+ /* init status */
+ status = admhc_get_rhdesc(ahcd);
+ if (status & (ADMHC_RH_LPSC | ADMHC_RH_OCIC))
+ buf [0] = changed = 1;
+ else
+ buf [0] = 0;
+ if (ahcd->num_ports > 7) {
+ buf [1] = 0;
+ length++;
+ }
+
+ /* look at each port */
+ for (i = 0; i < ahcd->num_ports; i++) {
+ status = admhc_get_portstatus(ahcd, i);
+
+ /* can't autostop if ports are connected */
+ any_connected |= (status & ADMHC_PS_CCS);
+
+ if (status & (ADMHC_PS_CSC | ADMHC_PS_PESC | ADMHC_PS_PSSC
+ | ADMHC_PS_OCIC | ADMHC_PS_PRSC)) {
+ changed = 1;
+ if (i < 7)
+ buf [0] |= 1 << (i + 1);
+ else
+ buf [1] |= 1 << (i - 7);
+ }
+ }
+
+ hcd->poll_rh = admhc_root_hub_state_changes(ahcd, changed,
+ any_connected);
+
+done:
+ spin_unlock_irqrestore(&ahcd->lock, flags);
+
+ return changed ? length : 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void admhc_hub_descriptor(struct admhcd *ahcd,
+ struct usb_hub_descriptor *desc)
+{
+ u32 rh = admhc_get_rhdesc(ahcd);
+ u16 temp;
+
+ desc->bDescriptorType = USB_DT_HUB; /* Hub-descriptor */
+ desc->bPwrOn2PwrGood = ADMHC_POTPGT/2; /* use default value */
+ desc->bHubContrCurrent = 0x00; /* 0mA */
+
+ desc->bNbrPorts = ahcd->num_ports;
+ temp = 1 + (ahcd->num_ports / 8);
+ desc->bDescLength = USB_DT_HUB_NONVAR_SIZE + 2 * temp;
+
+ /* FIXME */
+ temp = 0;
+ if (rh & ADMHC_RH_NPS) /* no power switching? */
+ temp |= 0x0002;
+ if (rh & ADMHC_RH_PSM) /* per-port power switching? */
+ temp |= 0x0001;
+ if (rh & ADMHC_RH_NOCP) /* no overcurrent reporting? */
+ temp |= 0x0010;
+ else if (rh & ADMHC_RH_OCPM) /* per-port overcurrent reporting? */
+ temp |= 0x0008;
+ desc->wHubCharacteristics = (__force __u16)cpu_to_hc16(ahcd, temp);
+
+ /* two bitmaps: ports removable, and usb 1.0 legacy PortPwrCtrlMask */
+ desc->bitmap [0] = 0;
+ desc->bitmap [0] = ~0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef CONFIG_USB_OTG
+
+static int admhc_start_port_reset(struct usb_hcd *hcd, unsigned port)
+{
+ struct admhcd *ahcd = hcd_to_admhcd(hcd);
+ u32 status;
+
+ if (!port)
+ return -EINVAL;
+ port--;
+
+ /* start port reset before HNP protocol times out */
+ status = admhc_readl(ahcd, &ahcd->regs->portstatus[port]);
+ if (!(status & ADMHC_PS_CCS))
+ return -ENODEV;
+
+ /* khubd will finish the reset later */
+ admhc_writel(ahcd, ADMHC_PS_PRS, &ahcd->regs->portstatus[port]);
+ return 0;
+}
+
+static void start_hnp(struct admhcd *ahcd);
+
+#else
+
+#define admhc_start_port_reset NULL
+
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+
+/* See usb 7.1.7.5: root hubs must issue at least 50 msec reset signaling,
+ * not necessarily continuous ... to guard against resume signaling.
+ * The short timeout is safe for non-root hubs, and is backward-compatible
+ * with earlier Linux hosts.
+ */
+#ifdef CONFIG_USB_SUSPEND
+#define PORT_RESET_MSEC 50
+#else
+#define PORT_RESET_MSEC 10
+#endif
+
+/* this timer value might be vendor-specific ... */
+#define PORT_RESET_HW_MSEC 10
+
+/* wrap-aware logic morphed from <linux/jiffies.h> */
+#define tick_before(t1,t2) ((s16)(((s16)(t1))-((s16)(t2))) < 0)
+
+/* called from some task, normally khubd */
+static inline int root_port_reset(struct admhcd *ahcd, unsigned port)
+{
+#if 0
+ /* FIXME: revert to this when frame numbers are updated */
+ __hc32 __iomem *portstat = &ahcd->regs->portstatus[port];
+ u32 temp;
+ u16 now = admhc_readl(ahcd, &ahcd->regs->fmnumber);
+ u16 reset_done = now + PORT_RESET_MSEC;
+
+ /* build a "continuous enough" reset signal, with up to
+ * 3msec gap between pulses. scheduler HZ==100 must work;
+ * this might need to be deadline-scheduled.
+ */
+ do {
+ /* spin until any current reset finishes */
+ for (;;) {
+ temp = admhc_readl(ahcd, portstat);
+ /* handle e.g. CardBus eject */
+ if (temp == ~(u32)0)
+ return -ESHUTDOWN;
+ if (!(temp & ADMHC_PS_PRS))
+ break;
+ udelay (500);
+ }
+
+ if (!(temp & ADMHC_PS_CCS))
+ break;
+ if (temp & ADMHC_PS_PRSC)
+ admhc_writel(ahcd, ADMHC_PS_PRSC, portstat);
+
+ /* start the next reset, sleep till it's probably done */
+ admhc_writel(ahcd, ADMHC_PS_PRS, portstat);
+ msleep(PORT_RESET_HW_MSEC);
+ now = admhc_readl(ahcd, &ahcd->regs->fmnumber);
+ } while (tick_before(now, reset_done));
+ /* caller synchronizes using PRSC */
+#else
+ __hc32 __iomem *portstat = &ahcd->regs->portstatus[port];
+ u32 temp;
+ unsigned long reset_done = jiffies + msecs_to_jiffies(PORT_RESET_MSEC);
+
+ /* build a "continuous enough" reset signal, with up to
+ * 3msec gap between pulses. scheduler HZ==100 must work;
+ * this might need to be deadline-scheduled.
+ */
+ do {
+ /* spin until any current reset finishes */
+ for (;;) {
+ temp = admhc_readl(ahcd, portstat);
+ /* handle e.g. CardBus eject */
+ if (temp == ~(u32)0)
+ return -ESHUTDOWN;
+ if (!(temp & ADMHC_PS_PRS))
+ break;
+ udelay (500);
+ }
+
+ if (!(temp & ADMHC_PS_CCS))
+ break;
+
+ if (temp & ADMHC_PS_PRSC)
+ admhc_writel(ahcd, ADMHC_PS_PRSC, portstat);
+
+ /* start the next reset, sleep till it's probably done */
+ admhc_writel(ahcd, ADMHC_PS_PRS, portstat);
+ msleep(PORT_RESET_HW_MSEC);
+ } while (time_before(jiffies, reset_done));
+
+ admhc_writel(ahcd, ADMHC_PS_SPE | ADMHC_PS_CSC, portstat);
+ msleep(100);
+#endif
+ return 0;
+}
+
+static int admhc_hub_control (
+ struct usb_hcd *hcd,
+ u16 typeReq,
+ u16 wValue,
+ u16 wIndex,
+ char *buf,
+ u16 wLength
+) {
+ struct admhcd *ahcd = hcd_to_admhcd(hcd);
+ int ports = hcd_to_bus (hcd)->root_hub->maxchild;
+ u32 temp;
+ int retval = 0;
+
+ if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)))
+ return -ESHUTDOWN;
+
+ switch (typeReq) {
+ case ClearHubFeature:
+ switch (wValue) {
+ case C_HUB_OVER_CURRENT:
+#if 0 /* FIXME */
+ admhc_writel(ahcd, ADMHC_RH_OCIC,
+ &ahcd->regs->roothub.status);
+#endif
+ case C_HUB_LOCAL_POWER:
+ break;
+ default:
+ goto error;
+ }
+ break;
+ case ClearPortFeature:
+ if (!wIndex || wIndex > ports)
+ goto error;
+ wIndex--;
+
+ switch (wValue) {
+ case USB_PORT_FEAT_ENABLE:
+ temp = ADMHC_PS_CPE;
+ break;
+ case USB_PORT_FEAT_SUSPEND:
+ temp = ADMHC_PS_CPS;
+ break;
+ case USB_PORT_FEAT_POWER:
+ temp = ADMHC_PS_CPP;
+ break;
+ case USB_PORT_FEAT_C_CONNECTION:
+ temp = ADMHC_PS_CSC;
+ break;
+ case USB_PORT_FEAT_C_ENABLE:
+ temp = ADMHC_PS_PESC;
+ break;
+ case USB_PORT_FEAT_C_SUSPEND:
+ temp = ADMHC_PS_PSSC;
+ break;
+ case USB_PORT_FEAT_C_OVER_CURRENT:
+ temp = ADMHC_PS_OCIC;
+ break;
+ case USB_PORT_FEAT_C_RESET:
+ temp = ADMHC_PS_PRSC;
+ break;
+ default:
+ goto error;
+ }
+ admhc_writel(ahcd, temp, &ahcd->regs->portstatus[wIndex]);
+ break;
+ case GetHubDescriptor:
+ admhc_hub_descriptor(ahcd, (struct usb_hub_descriptor *) buf);
+ break;
+ case GetHubStatus:
+ temp = admhc_get_rhdesc(ahcd);
+ temp &= ~(ADMHC_RH_CRWE | ADMHC_RH_DRWE);
+ put_unaligned(cpu_to_le32 (temp), (__le32 *) buf);
+ break;
+ case GetPortStatus:
+ if (!wIndex || wIndex > ports)
+ goto error;
+ wIndex--;
+ temp = admhc_get_portstatus(ahcd, wIndex);
+ put_unaligned(cpu_to_le32 (temp), (__le32 *) buf);
+
+ dbg_port(ahcd, "GetPortStatus", wIndex, temp);
+ break;
+ case SetHubFeature:
+ switch (wValue) {
+ case C_HUB_OVER_CURRENT:
+ // FIXME: this can be cleared, yes?
+ case C_HUB_LOCAL_POWER:
+ break;
+ default:
+ goto error;
+ }
+ break;
+ case SetPortFeature:
+ if (!wIndex || wIndex > ports)
+ goto error;
+ wIndex--;
+
+ switch (wValue) {
+ case USB_PORT_FEAT_ENABLE:
+ admhc_writel(ahcd, ADMHC_PS_SPE,
+ &ahcd->regs->portstatus[wIndex]);
+ break;
+ case USB_PORT_FEAT_SUSPEND:
+#ifdef CONFIG_USB_OTG
+ if (hcd->self.otg_port == (wIndex + 1)
+ && hcd->self.b_hnp_enable)
+ start_hnp(ahcd);
+ else
+#endif
+ admhc_writel(ahcd, ADMHC_PS_SPS,
+ &ahcd->regs->portstatus[wIndex]);
+ break;
+ case USB_PORT_FEAT_POWER:
+ admhc_writel(ahcd, ADMHC_PS_SPP,
+ &ahcd->regs->portstatus[wIndex]);
+ break;
+ case USB_PORT_FEAT_RESET:
+ retval = root_port_reset(ahcd, wIndex);
+ break;
+ default:
+ goto error;
+ }
+ break;
+
+ default:
+error:
+ /* "protocol stall" on error */
+ retval = -EPIPE;
+ }
+ return retval;
+}
+
--- /dev/null
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
+ *
+ * This file is licenced under the GPL.
+ */
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * OHCI deals with three types of memory:
+ * - data used only by the HCD ... kmalloc is fine
+ * - async and periodic schedules, shared by HC and HCD ... these
+ * need to use dma_pool or dma_alloc_coherent
+ * - driver buffers, read/written by HC ... the hcd glue or the
+ * device driver provides us with dma addresses
+ *
+ * There's also "register" data, which is memory mapped.
+ * No memory seen by this driver (or any HCD) may be paged out.
+ */
+
+/*-------------------------------------------------------------------------*/
+
+static void admhc_hcd_init(struct admhcd *ahcd)
+{
+ ahcd->next_statechange = jiffies;
+ spin_lock_init(&ahcd->lock);
+ INIT_LIST_HEAD(&ahcd->pending);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int admhc_mem_init(struct admhcd *ahcd)
+{
+ ahcd->td_cache = dma_pool_create("admhc_td",
+ admhcd_to_hcd(ahcd)->self.controller,
+ sizeof(struct td),
+ TD_ALIGN, /* byte alignment */
+ 0 /* no page-crossing issues */
+ );
+ if (!ahcd->td_cache)
+ goto err;
+
+ ahcd->ed_cache = dma_pool_create("admhc_ed",
+ admhcd_to_hcd(ahcd)->self.controller,
+ sizeof(struct ed),
+ ED_ALIGN, /* byte alignment */
+ 0 /* no page-crossing issues */
+ );
+ if (!ahcd->ed_cache)
+ goto err_td_cache;
+
+ return 0;
+
+err_td_cache:
+ dma_pool_destroy(ahcd->td_cache);
+ ahcd->td_cache = NULL;
+err:
+ return -ENOMEM;
+}
+
+static void admhc_mem_cleanup(struct admhcd *ahcd)
+{
+ if (ahcd->td_cache) {
+ dma_pool_destroy(ahcd->td_cache);
+ ahcd->td_cache = NULL;
+ }
+
+ if (ahcd->ed_cache) {
+ dma_pool_destroy(ahcd->ed_cache);
+ ahcd->ed_cache = NULL;
+ }
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* ahcd "done list" processing needs this mapping */
+static inline struct td *dma_to_td(struct admhcd *ahcd, dma_addr_t td_dma)
+{
+ struct td *td;
+
+ td_dma &= TD_MASK;
+ td = ahcd->td_hash[TD_HASH_FUNC(td_dma)];
+ while (td && td->td_dma != td_dma)
+ td = td->td_hash;
+
+ return td;
+}
+
+/* TDs ... */
+static struct td *td_alloc(struct admhcd *ahcd, gfp_t mem_flags)
+{
+ dma_addr_t dma;
+ struct td *td;
+
+ td = dma_pool_alloc(ahcd->td_cache, mem_flags, &dma);
+ if (!td)
+ return NULL;
+
+ /* in case ahcd fetches it, make it look dead */
+ memset(td, 0, sizeof *td);
+ td->hwNextTD = cpu_to_hc32(ahcd, dma);
+ td->td_dma = dma;
+ /* hashed in td_fill */
+
+ return td;
+}
+
+static void td_free(struct admhcd *ahcd, struct td *td)
+{
+ struct td **prev = &ahcd->td_hash[TD_HASH_FUNC(td->td_dma)];
+
+ while (*prev && *prev != td)
+ prev = &(*prev)->td_hash;
+ if (*prev)
+ *prev = td->td_hash;
+#if 0
+ /* TODO: remove */
+ else if ((td->hwINFO & cpu_to_hc32(ahcd, TD_DONE)) != 0)
+ admhc_dbg (ahcd, "no hash for td %p\n", td);
+#else
+ else if ((td->flags & TD_FLAG_DONE) != 0)
+ admhc_dbg (ahcd, "no hash for td %p\n", td);
+#endif
+ dma_pool_free(ahcd->td_cache, td, td->td_dma);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* EDs ... */
+static struct ed *ed_alloc(struct admhcd *ahcd, gfp_t mem_flags)
+{
+ dma_addr_t dma;
+ struct ed *ed;
+
+ ed = dma_pool_alloc(ahcd->ed_cache, mem_flags, &dma);
+ if (!ed)
+ return NULL;
+
+ memset(ed, 0, sizeof(*ed));
+ ed->dma = dma;
+
+ INIT_LIST_HEAD(&ed->td_list);
+ INIT_LIST_HEAD(&ed->urb_list);
+
+ return ed;
+}
+
+static void ed_free(struct admhcd *ahcd, struct ed *ed)
+{
+ dma_pool_free(ahcd->ed_cache, ed, ed->dma);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* URB priv ... */
+static void urb_priv_free(struct admhcd *ahcd, struct urb_priv *urb_priv)
+{
+ int i;
+
+ for (i = 0; i < urb_priv->td_cnt; i++)
+ if (urb_priv->td[i])
+ td_free(ahcd, urb_priv->td[i]);
+
+ list_del(&urb_priv->pending);
+ kfree(urb_priv);
+}
+
+static struct urb_priv *urb_priv_alloc(struct admhcd *ahcd, int num_tds,
+ gfp_t mem_flags)
+{
+ struct urb_priv *priv;
+
+ /* allocate the private part of the URB */
+ priv = kzalloc(sizeof(*priv) + sizeof(struct td) * num_tds, mem_flags);
+ if (!priv)
+ goto err;
+
+ /* allocate the TDs (deferring hash chain updates) */
+ for (priv->td_cnt = 0; priv->td_cnt < num_tds; priv->td_cnt++) {
+ priv->td[priv->td_cnt] = td_alloc(ahcd, mem_flags);
+ if (priv->td[priv->td_cnt] == NULL)
+ goto err_free;
+ }
+
+ INIT_LIST_HEAD(&priv->pending);
+
+ return priv;
+
+err_free:
+ urb_priv_free(ahcd, priv);
+err:
+ return NULL;
+}
--- /dev/null
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/irq.h>
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * URB goes back to driver, and isn't reissued.
+ * It's completely gone from HC data structures.
+ * PRECONDITION: ahcd lock held, irqs blocked.
+ */
+static void
+finish_urb(struct admhcd *ahcd, struct urb *urb)
+__releases(ahcd->lock)
+__acquires(ahcd->lock)
+{
+ urb_priv_free(ahcd, urb->hcpriv);
+ urb->hcpriv = NULL;
+
+ spin_lock(&urb->lock);
+ if (likely(urb->status == -EINPROGRESS))
+ urb->status = 0;
+
+ /* report short control reads right even though the data TD always
+ * has TD_R set. (much simpler, but creates the 1-td limit.)
+ */
+ if (unlikely(urb->transfer_flags & URB_SHORT_NOT_OK)
+ && unlikely(usb_pipecontrol(urb->pipe))
+ && urb->actual_length < urb->transfer_buffer_length
+ && usb_pipein(urb->pipe)
+ && urb->status == 0) {
+ urb->status = -EREMOTEIO;
+#ifdef ADMHC_VERBOSE_DEBUG
+ urb_print(urb, "SHORT", usb_pipeout (urb->pipe));
+#endif
+ }
+ spin_unlock(&urb->lock);
+
+ switch (usb_pipetype(urb->pipe)) {
+ case PIPE_ISOCHRONOUS:
+ admhcd_to_hcd(ahcd)->self.bandwidth_isoc_reqs--;
+ break;
+ case PIPE_INTERRUPT:
+ admhcd_to_hcd(ahcd)->self.bandwidth_int_reqs--;
+ break;
+ }
+
+#ifdef ADMHC_VERBOSE_DEBUG
+ urb_print(urb, "RET", usb_pipeout (urb->pipe));
+#endif
+
+ /* urb->complete() can reenter this HCD */
+ spin_unlock(&ahcd->lock);
+ usb_hcd_giveback_urb(admhcd_to_hcd(ahcd), urb);
+ spin_lock(&ahcd->lock);
+}
+
+
+/*-------------------------------------------------------------------------*
+ * ED handling functions
+ *-------------------------------------------------------------------------*/
+
+#if 0 /* FIXME */
+/* search for the right schedule branch to use for a periodic ed.
+ * does some load balancing; returns the branch, or negative errno.
+ */
+static int balance(struct admhcd *ahcd, int interval, int load)
+{
+ int i, branch = -ENOSPC;
+
+ /* iso periods can be huge; iso tds specify frame numbers */
+ if (interval > NUM_INTS)
+ interval = NUM_INTS;
+
+ /* search for the least loaded schedule branch of that period
+ * that has enough bandwidth left unreserved.
+ */
+ for (i = 0; i < interval ; i++) {
+ if (branch < 0 || ahcd->load [branch] > ahcd->load [i]) {
+ int j;
+
+ /* usb 1.1 says 90% of one frame */
+ for (j = i; j < NUM_INTS; j += interval) {
+ if ((ahcd->load [j] + load) > 900)
+ break;
+ }
+ if (j < NUM_INTS)
+ continue;
+ branch = i;
+ }
+ }
+ return branch;
+}
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+#if 0 /* FIXME */
+/* both iso and interrupt requests have periods; this routine puts them
+ * into the schedule tree in the apppropriate place. most iso devices use
+ * 1msec periods, but that's not required.
+ */
+static void periodic_link (struct admhcd *ahcd, struct ed *ed)
+{
+ unsigned i;
+
+ admhc_vdbg (ahcd, "link %sed %p branch %d [%dus.], interval %d\n",
+ (ed->hwINFO & cpu_to_hc32 (ahcd, ED_ISO)) ? "iso " : "",
+ ed, ed->branch, ed->load, ed->interval);
+
+ for (i = ed->branch; i < NUM_INTS; i += ed->interval) {
+ struct ed **prev = &ahcd->periodic [i];
+ __hc32 *prev_p = &ahcd->hcca->int_table [i];
+ struct ed *here = *prev;
+
+ /* sorting each branch by period (slow before fast)
+ * lets us share the faster parts of the tree.
+ * (plus maybe: put interrupt eds before iso)
+ */
+ while (here && ed != here) {
+ if (ed->interval > here->interval)
+ break;
+ prev = &here->ed_next;
+ prev_p = &here->hwNextED;
+ here = *prev;
+ }
+ if (ed != here) {
+ ed->ed_next = here;
+ if (here)
+ ed->hwNextED = *prev_p;
+ wmb ();
+ *prev = ed;
+ *prev_p = cpu_to_hc32(ahcd, ed->dma);
+ wmb();
+ }
+ ahcd->load [i] += ed->load;
+ }
+ admhcd_to_hcd(ahcd)->self.bandwidth_allocated += ed->load / ed->interval;
+}
+#endif
+
+/* link an ed into the HC chain */
+
+static int ed_schedule(struct admhcd *ahcd, struct ed *ed)
+{
+ struct ed *old_tail;
+
+ if (admhcd_to_hcd(ahcd)->state == HC_STATE_QUIESCING)
+ return -EAGAIN;
+
+ ed->state = ED_OPER;
+
+ old_tail = ahcd->ed_tails[ed->type];
+
+ ed->ed_next = old_tail->ed_next;
+ if (ed->ed_next) {
+ ed->ed_next->ed_prev = ed;
+ ed->hwNextED = cpu_to_hc32(ahcd, ed->ed_next->dma);
+ }
+ ed->ed_prev = old_tail;
+
+ old_tail->ed_next = ed;
+ old_tail->hwNextED = cpu_to_hc32(ahcd, ed->dma);
+
+ ahcd->ed_tails[ed->type] = ed;
+
+ admhc_dma_enable(ahcd);
+
+ return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+#if 0 /* FIXME */
+/* scan the periodic table to find and unlink this ED */
+static void periodic_unlink (struct admhcd *ahcd, struct ed *ed)
+{
+ int i;
+
+ for (i = ed->branch; i < NUM_INTS; i += ed->interval) {
+ struct ed *temp;
+ struct ed **prev = &ahcd->periodic [i];
+ __hc32 *prev_p = &ahcd->hcca->int_table [i];
+
+ while (*prev && (temp = *prev) != ed) {
+ prev_p = &temp->hwNextED;
+ prev = &temp->ed_next;
+ }
+ if (*prev) {
+ *prev_p = ed->hwNextED;
+ *prev = ed->ed_next;
+ }
+ ahcd->load [i] -= ed->load;
+ }
+
+ admhcd_to_hcd(ahcd)->self.bandwidth_allocated -= ed->load / ed->interval;
+ admhc_vdbg (ahcd, "unlink %sed %p branch %d [%dus.], interval %d\n",
+ (ed->hwINFO & cpu_to_hc32 (ahcd, ED_ISO)) ? "iso " : "",
+ ed, ed->branch, ed->load, ed->interval);
+}
+#endif
+
+/* unlink an ed from the HC chain.
+ * just the link to the ed is unlinked.
+ * the link from the ed still points to another operational ed or 0
+ * so the HC can eventually finish the processing of the unlinked ed
+ * (assuming it already started that, which needn't be true).
+ *
+ * ED_UNLINK is a transient state: the HC may still see this ED, but soon
+ * it won't. ED_SKIP means the HC will finish its current transaction,
+ * but won't start anything new. The TD queue may still grow; device
+ * drivers don't know about this HCD-internal state.
+ *
+ * When the HC can't see the ED, something changes ED_UNLINK to one of:
+ *
+ * - ED_OPER: when there's any request queued, the ED gets rescheduled
+ * immediately. HC should be working on them.
+ *
+ * - ED_IDLE: when there's no TD queue. there's no reason for the HC
+ * to care about this ED; safe to disable the endpoint.
+ *
+ * When finish_unlinks() runs later, after SOF interrupt, it will often
+ * complete one or more URB unlinks before making that state change.
+ */
+static void ed_deschedule(struct admhcd *ahcd, struct ed *ed)
+{
+ ed->hwINFO |= cpu_to_hc32(ahcd, ED_SKIP);
+ wmb();
+ ed->state = ED_UNLINK;
+
+ /* remove this ED from the HC list */
+ ed->ed_prev->hwNextED = ed->hwNextED;
+
+ /* and remove it from our list also */
+ ed->ed_prev->ed_next = ed->ed_next;
+
+ if (ed->ed_next)
+ ed->ed_next->ed_prev = ed->ed_prev;
+
+ if (ahcd->ed_tails[ed->type] == ed)
+ ahcd->ed_tails[ed->type] = ed->ed_prev;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static struct ed *ed_create(struct admhcd *ahcd, unsigned int type, u32 info)
+{
+ struct ed *ed;
+ struct td *td;
+
+ ed = ed_alloc(ahcd, GFP_ATOMIC);
+ if (!ed)
+ goto err;
+
+ /* dummy td; end of td list for this ed */
+ td = td_alloc(ahcd, GFP_ATOMIC);
+ if (!td)
+ goto err_free_ed;
+
+ switch (type) {
+ case PIPE_INTERRUPT:
+ info |= ED_INT;
+ break;
+ case PIPE_ISOCHRONOUS:
+ info |= ED_ISO;
+ break;
+ }
+
+ ed->dummy = td;
+ ed->state = ED_IDLE;
+ ed->type = type;
+
+ ed->hwINFO = cpu_to_hc32(ahcd, info);
+ ed->hwTailP = cpu_to_hc32(ahcd, td->td_dma);
+ ed->hwHeadP = ed->hwTailP; /* ED_C, ED_H zeroed */
+
+ return ed;
+
+err_free_ed:
+ ed_free(ahcd, ed);
+err:
+ return NULL;
+}
+
+/* get and maybe (re)init an endpoint. init _should_ be done only as part
+ * of enumeration, usb_set_configuration() or usb_set_interface().
+ */
+static struct ed *ed_get(struct admhcd *ahcd, struct usb_host_endpoint *ep,
+ struct usb_device *udev, unsigned int pipe, int interval)
+{
+ struct ed *ed;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ahcd->lock, flags);
+ ed = ep->hcpriv;
+ if (!ed) {
+ u32 info;
+
+ /* FIXME: usbcore changes dev->devnum before SET_ADDRESS
+ * suceeds ... otherwise we wouldn't need "pipe".
+ */
+ info = usb_pipedevice(pipe);
+ info |= (ep->desc.bEndpointAddress & ~USB_DIR_IN) << ED_EN_SHIFT;
+ info |= le16_to_cpu(ep->desc.wMaxPacketSize) << ED_MPS_SHIFT;
+ if (udev->speed == USB_SPEED_FULL)
+ info |= ED_SPEED_FULL;
+
+ ed = ed_create(ahcd, usb_pipetype(pipe), info);
+ if (ed)
+ ep->hcpriv = ed;
+ }
+ spin_unlock_irqrestore(&ahcd->lock, flags);
+
+ return ed;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* request unlinking of an endpoint from an operational HC.
+ * put the ep on the rm_list
+ * real work is done at the next start frame (SOFI) hardware interrupt
+ * caller guarantees HCD is running, so hardware access is safe,
+ * and that ed->state is ED_OPER
+ */
+static void start_ed_unlink(struct admhcd *ahcd, struct ed *ed)
+{
+ ed->hwINFO |= cpu_to_hc32 (ahcd, ED_DEQUEUE);
+ ed_deschedule(ahcd, ed);
+
+ /* add this ED into the remove list */
+ ed->ed_rm_next = ahcd->ed_rm_list;
+ ahcd->ed_rm_list = ed;
+
+ /* enable SOF interrupt */
+ admhc_intr_ack(ahcd, ADMHC_INTR_SOFI);
+ admhc_intr_enable(ahcd, ADMHC_INTR_SOFI);
+ /* flush those writes */
+ admhc_writel_flush(ahcd);
+
+ /* SOF interrupt might get delayed; record the frame counter value that
+ * indicates when the HC isn't looking at it, so concurrent unlinks
+ * behave. frame_no wraps every 2^16 msec, and changes right before
+ * SOF is triggered.
+ */
+ ed->tick = admhc_frame_no(ahcd) + 1;
+}
+
+/*-------------------------------------------------------------------------*
+ * TD handling functions
+ *-------------------------------------------------------------------------*/
+
+/* enqueue next TD for this URB (OHCI spec 5.2.8.2) */
+
+static void
+td_fill(struct admhcd *ahcd, u32 info, dma_addr_t data, int len,
+ struct urb *urb, int index)
+{
+ struct td *td, *td_pt;
+ struct urb_priv *urb_priv = urb->hcpriv;
+ int hash;
+ u32 cbl = 0;
+
+#if 1
+ if (index == (urb_priv->td_cnt - 1) &&
+ ((urb->transfer_flags & URB_NO_INTERRUPT) == 0))
+ cbl |= TD_IE;
+#else
+ if (index == (urb_priv->td_cnt - 1))
+ cbl |= TD_IE;
+#endif
+
+ /* use this td as the next dummy */
+ td_pt = urb_priv->td[index];
+
+ /* fill the old dummy TD */
+ td = urb_priv->td[index] = urb_priv->ed->dummy;
+ urb_priv->ed->dummy = td_pt;
+
+ td->ed = urb_priv->ed;
+ td->next_dl_td = NULL;
+ td->index = index;
+ td->urb = urb;
+ td->data_dma = data;
+ if (!len)
+ data = 0;
+
+ if (data)
+ cbl |= (len & TD_BL_MASK);
+
+ info |= TD_OWN;
+
+ /* setup hardware specific fields */
+ td->hwINFO = cpu_to_hc32(ahcd, info);
+ td->hwDBP = cpu_to_hc32(ahcd, data);
+ td->hwCBL = cpu_to_hc32(ahcd, cbl);
+ td->hwNextTD = cpu_to_hc32(ahcd, td_pt->td_dma);
+
+ /* append to queue */
+ list_add_tail(&td->td_list, &td->ed->td_list);
+
+ /* hash it for later reverse mapping */
+ hash = TD_HASH_FUNC(td->td_dma);
+ td->td_hash = ahcd->td_hash[hash];
+ ahcd->td_hash[hash] = td;
+
+ /* HC might read the TD (or cachelines) right away ... */
+ wmb();
+ td->ed->hwTailP = td->hwNextTD;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* Prepare all TDs of a transfer, and queue them onto the ED.
+ * Caller guarantees HC is active.
+ * Usually the ED is already on the schedule, so TDs might be
+ * processed as soon as they're queued.
+ */
+static void td_submit_urb(struct admhcd *ahcd, struct urb *urb)
+{
+ struct urb_priv *urb_priv = urb->hcpriv;
+ dma_addr_t data;
+ int data_len = urb->transfer_buffer_length;
+ int cnt = 0;
+ u32 info = 0;
+ int is_out = usb_pipeout(urb->pipe);
+ int periodic = 0;
+ u32 toggle = 0;
+ struct td *td;
+
+ /* OHCI handles the bulk/interrupt data toggles itself. We just
+ * use the device toggle bits for resetting, and rely on the fact
+ * that resetting toggle is meaningless if the endpoint is active.
+ */
+
+ if (usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), is_out)) {
+ toggle = TD_T_CARRY;
+ } else {
+ toggle = TD_T_DATA0;
+ usb_settoggle(urb->dev, usb_pipeendpoint (urb->pipe),
+ is_out, 1);
+ }
+
+ urb_priv->td_idx = 0;
+ list_add(&urb_priv->pending, &ahcd->pending);
+
+ if (data_len)
+ data = urb->transfer_dma;
+ else
+ data = 0;
+
+ /* NOTE: TD_CC is set so we can tell which TDs the HC processed by
+ * using TD_CC_GET, as well as by seeing them on the done list.
+ * (CC = NotAccessed ... 0x0F, or 0x0E in PSWs for ISO.)
+ */
+ switch (urb_priv->ed->type) {
+ case PIPE_INTERRUPT:
+ info = is_out
+ ? TD_T_CARRY | TD_SCC_NOTACCESSED | TD_DP_OUT
+ : TD_T_CARRY | TD_SCC_NOTACCESSED | TD_DP_IN;
+
+ /* setup service interval and starting frame number */
+ info |= (urb->start_frame & TD_FN_MASK);
+ info |= (urb->interval & TD_ISI_MASK) << TD_ISI_SHIFT;
+
+ td_fill(ahcd, info, data, data_len, urb, cnt);
+ cnt++;
+
+ admhcd_to_hcd(ahcd)->self.bandwidth_int_reqs++;
+ break;
+
+ case PIPE_BULK:
+ info = is_out
+ ? TD_SCC_NOTACCESSED | TD_DP_OUT
+ : TD_SCC_NOTACCESSED | TD_DP_IN;
+
+ /* TDs _could_ transfer up to 8K each */
+ while (data_len > TD_DATALEN_MAX) {
+ td_fill(ahcd, info | ((cnt) ? TD_T_CARRY : toggle),
+ data, TD_DATALEN_MAX, urb, cnt);
+ data += TD_DATALEN_MAX;
+ data_len -= TD_DATALEN_MAX;
+ cnt++;
+ }
+
+ td_fill(ahcd, info | ((cnt) ? TD_T_CARRY : toggle), data,
+ data_len, urb, cnt);
+ cnt++;
+
+ if ((urb->transfer_flags & URB_ZERO_PACKET)
+ && (cnt < urb_priv->td_cnt)) {
+ td_fill(ahcd, info | ((cnt) ? TD_T_CARRY : toggle),
+ 0, 0, urb, cnt);
+ cnt++;
+ }
+ break;
+
+ /* control manages DATA0/DATA1 toggle per-request; SETUP resets it,
+ * any DATA phase works normally, and the STATUS ack is special.
+ */
+ case PIPE_CONTROL:
+ /* fill a TD for the setup */
+ info = TD_SCC_NOTACCESSED | TD_DP_SETUP | TD_T_DATA0;
+ td_fill(ahcd, info, urb->setup_dma, 8, urb, cnt++);
+
+ if (data_len > 0) {
+ /* fill a TD for the data */
+ info = TD_SCC_NOTACCESSED | TD_T_DATA1;
+ info |= is_out ? TD_DP_OUT : TD_DP_IN;
+ /* NOTE: mishandles transfers >8K, some >4K */
+ td_fill(ahcd, info, data, data_len, urb, cnt++);
+ }
+
+ /* fill a TD for the ACK */
+ info = (is_out || data_len == 0)
+ ? TD_SCC_NOTACCESSED | TD_DP_IN | TD_T_DATA1
+ : TD_SCC_NOTACCESSED | TD_DP_OUT | TD_T_DATA1;
+ td_fill(ahcd, info, data, 0, urb, cnt++);
+
+ break;
+
+ /* ISO has no retransmit, so no toggle;
+ * Each TD could handle multiple consecutive frames (interval 1);
+ * we could often reduce the number of TDs here.
+ */
+ case PIPE_ISOCHRONOUS:
+ info = TD_SCC_NOTACCESSED;
+ for (cnt = 0; cnt < urb->number_of_packets; cnt++) {
+ int frame = urb->start_frame;
+
+ frame += cnt * urb->interval;
+ frame &= TD_FN_MASK;
+ td_fill(ahcd, info | frame,
+ data + urb->iso_frame_desc[cnt].offset,
+ urb->iso_frame_desc[cnt].length, urb, cnt);
+ }
+ admhcd_to_hcd(ahcd)->self.bandwidth_isoc_reqs++;
+ break;
+ }
+
+ if (urb_priv->td_cnt != cnt)
+ admhc_err(ahcd, "bad number of tds created for urb %p\n", urb);
+}
+
+/*-------------------------------------------------------------------------*
+ * Done List handling functions
+ *-------------------------------------------------------------------------*/
+
+/* calculate transfer length/status and update the urb
+ * PRECONDITION: irqsafe (only for urb->status locking)
+ */
+static void td_done(struct admhcd *ahcd, struct urb *urb, struct td *td)
+{
+ u32 info = hc32_to_cpup(ahcd, &td->hwINFO);
+ int type = usb_pipetype(urb->pipe);
+ int cc = TD_CC_NOERROR;
+
+ /* ISO ... drivers see per-TD length/status */
+ if (type == PIPE_ISOCHRONOUS) {
+#if 0
+ /* TODO */
+ int dlen = 0;
+
+ /* NOTE: assumes FC in tdINFO == 0, and that
+ * only the first of 0..MAXPSW psws is used.
+ */
+
+ cc = TD_CC_GET(td);
+ if (tdINFO & TD_CC) /* hc didn't touch? */
+ return;
+
+ if (usb_pipeout (urb->pipe))
+ dlen = urb->iso_frame_desc [td->index].length;
+ else {
+ /* short reads are always OK for ISO */
+ if (cc == TD_DATAUNDERRUN)
+ cc = TD_CC_NOERROR;
+ dlen = tdPSW & 0x3ff;
+ }
+ urb->actual_length += dlen;
+ urb->iso_frame_desc [td->index].actual_length = dlen;
+ urb->iso_frame_desc [td->index].status = cc_to_error [cc];
+
+ if (cc != TD_CC_NOERROR)
+ admhc_vdbg (ahcd,
+ "urb %p iso td %p (%d) len %d cc %d\n",
+ urb, td, 1 + td->index, dlen, cc);
+#endif
+ /* BULK, INT, CONTROL ... drivers see aggregate length/status,
+ * except that "setup" bytes aren't counted and "short" transfers
+ * might not be reported as errors.
+ */
+ } else {
+ u32 bl = TD_BL_GET(hc32_to_cpup(ahcd, &td->hwCBL));
+ u32 tdDBP = hc32_to_cpup(ahcd, &td->hwDBP);
+
+ cc = TD_CC_GET(info);
+
+ /* update packet status if needed (short is normally ok) */
+ if (cc == TD_CC_DATAUNDERRUN
+ && !(urb->transfer_flags & URB_SHORT_NOT_OK))
+ cc = TD_CC_NOERROR;
+
+ if (cc != TD_CC_NOERROR && cc < TD_CC_HCD0) {
+ admhc_dump_ed(ahcd, "CC ERROR", td->ed, 1);
+ spin_lock(&urb->lock);
+ if (urb->status == -EINPROGRESS)
+ urb->status = cc_to_error[cc];
+ spin_unlock(&urb->lock);
+ }
+
+ /* count all non-empty packets except control SETUP packet */
+ if ((type != PIPE_CONTROL || td->index != 0) && tdDBP != 0) {
+ urb->actual_length += tdDBP - td->data_dma + bl;
+ }
+
+ if (cc != TD_CC_NOERROR && cc < TD_CC_HCD0)
+ admhc_vdbg(ahcd,
+ "urb %p td %p (%d) cc %d, len=%d/%d\n",
+ urb, td, td->index, cc,
+ urb->actual_length,
+ urb->transfer_buffer_length);
+ }
+
+ list_del(&td->td_list);
+
+}
+
+/*-------------------------------------------------------------------------*/
+
+static inline struct td *
+ed_halted(struct admhcd *ahcd, struct td *td, int cc, struct td *rev)
+{
+ struct urb *urb = td->urb;
+ struct ed *ed = td->ed;
+ struct list_head *tmp = td->td_list.next;
+ __hc32 toggle = ed->hwHeadP & cpu_to_hc32 (ahcd, ED_C);
+
+ admhc_dump_ed(ahcd, "ed halted", td->ed, 1);
+ /* clear ed halt; this is the td that caused it, but keep it inactive
+ * until its urb->complete() has a chance to clean up.
+ */
+ ed->hwINFO |= cpu_to_hc32 (ahcd, ED_SKIP);
+ wmb ();
+ ed->hwHeadP &= ~cpu_to_hc32 (ahcd, ED_H);
+
+ /* put any later tds from this urb onto the donelist, after 'td',
+ * order won't matter here: no errors, and nothing was transferred.
+ * also patch the ed so it looks as if those tds completed normally.
+ */
+ while (tmp != &ed->td_list) {
+ struct td *next;
+ __hc32 info;
+
+ next = list_entry(tmp, struct td, td_list);
+ tmp = next->td_list.next;
+
+ if (next->urb != urb)
+ break;
+
+ /* NOTE: if multi-td control DATA segments get supported,
+ * this urb had one of them, this td wasn't the last td
+ * in that segment (TD_R clear), this ed halted because
+ * of a short read, _and_ URB_SHORT_NOT_OK is clear ...
+ * then we need to leave the control STATUS packet queued
+ * and clear ED_SKIP.
+ */
+ info = next->hwINFO;
+#if 0 /* FIXME */
+ info |= cpu_to_hc32 (ahcd, TD_DONE);
+ info &= ~cpu_to_hc32 (ahcd, TD_CC);
+#endif
+ next->hwINFO = info;
+
+ next->next_dl_td = rev;
+ rev = next;
+
+ ed->hwHeadP = next->hwNextTD | toggle;
+ }
+
+ /* help for troubleshooting: report anything that
+ * looks odd ... that doesn't include protocol stalls
+ * (or maybe some other things)
+ */
+ switch (cc) {
+ case TD_CC_DATAUNDERRUN:
+ if ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0)
+ break;
+ /* fallthrough */
+ case TD_CC_STALL:
+ if (usb_pipecontrol (urb->pipe))
+ break;
+ /* fallthrough */
+ default:
+ admhc_dbg (ahcd,
+ "urb %p path %s ep%d%s %08x cc %d --> status %d\n",
+ urb, urb->dev->devpath,
+ usb_pipeendpoint (urb->pipe),
+ usb_pipein (urb->pipe) ? "in" : "out",
+ hc32_to_cpu(ahcd, td->hwINFO),
+ cc, cc_to_error [cc]);
+ }
+
+ return rev;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* there are some urbs/eds to unlink; called in_irq(), with HCD locked */
+static void
+finish_unlinks(struct admhcd *ahcd, u16 tick)
+{
+ struct ed *ed, **last;
+
+rescan_all:
+ for (last = &ahcd->ed_rm_list, ed = *last; ed != NULL; ed = *last) {
+ struct list_head *entry, *tmp;
+ int completed, modified;
+ __hc32 *prev;
+
+ /* only take off EDs that the HC isn't using, accounting for
+ * frame counter wraps and EDs with partially retired TDs
+ */
+ if (likely(HC_IS_RUNNING(admhcd_to_hcd(ahcd)->state))) {
+ if (tick_before (tick, ed->tick)) {
+skip_ed:
+ last = &ed->ed_rm_next;
+ continue;
+ }
+
+ if (!list_empty (&ed->td_list)) {
+ struct td *td;
+ u32 head;
+
+ td = list_entry(ed->td_list.next, struct td,
+ td_list);
+ head = hc32_to_cpu(ahcd, ed->hwHeadP) &
+ TD_MASK;
+
+ /* INTR_WDH may need to clean up first */
+ if (td->td_dma != head)
+ goto skip_ed;
+ }
+ }
+
+ /* reentrancy: if we drop the schedule lock, someone might
+ * have modified this list. normally it's just prepending
+ * entries (which we'd ignore), but paranoia won't hurt.
+ */
+ *last = ed->ed_rm_next;
+ ed->ed_rm_next = NULL;
+ modified = 0;
+
+ /* unlink urbs as requested, but rescan the list after
+ * we call a completion since it might have unlinked
+ * another (earlier) urb
+ *
+ * When we get here, the HC doesn't see this ed. But it
+ * must not be rescheduled until all completed URBs have
+ * been given back to the driver.
+ */
+rescan_this:
+ completed = 0;
+ prev = &ed->hwHeadP;
+ list_for_each_safe (entry, tmp, &ed->td_list) {
+ struct td *td;
+ struct urb *urb;
+ struct urb_priv *urb_priv;
+ __hc32 savebits;
+
+ td = list_entry(entry, struct td, td_list);
+ urb = td->urb;
+ urb_priv = td->urb->hcpriv;
+
+ if (urb->status == -EINPROGRESS) {
+ prev = &td->hwNextTD;
+ continue;
+ }
+
+ if ((urb_priv) == NULL)
+ continue;
+
+ /* patch pointer hc uses */
+ savebits = *prev & ~cpu_to_hc32(ahcd, TD_MASK);
+ *prev = td->hwNextTD | savebits;
+
+ /* HC may have partly processed this TD */
+ urb_print(urb, "PARTIAL",1);
+ td_done(ahcd, urb, td);
+ urb_priv->td_idx++;
+
+ /* if URB is done, clean up */
+ if (urb_priv->td_idx == urb_priv->td_cnt) {
+ modified = completed = 1;
+ finish_urb(ahcd, urb);
+ }
+ }
+ if (completed && !list_empty (&ed->td_list))
+ goto rescan_this;
+
+ /* ED's now officially unlinked, hc doesn't see */
+ ed->state = ED_IDLE;
+ ed->hwHeadP &= ~cpu_to_hc32(ahcd, ED_H);
+ ed->hwNextED = 0;
+ wmb ();
+ ed->hwINFO &= ~cpu_to_hc32 (ahcd, ED_SKIP | ED_DEQUEUE);
+
+ /* but if there's work queued, reschedule */
+ if (!list_empty (&ed->td_list)) {
+ if (HC_IS_RUNNING(admhcd_to_hcd(ahcd)->state))
+ ed_schedule(ahcd, ed);
+ }
+
+ if (modified)
+ goto rescan_all;
+ }
+}
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Process normal completions (error or success) and clean the schedules.
+ *
+ * This is the main path for handing urbs back to drivers. The only other
+ * path is finish_unlinks(), which unlinks URBs using ed_rm_list, instead of
+ * scanning the (re-reversed) donelist as this does.
+ */
+
+static void ed_update(struct admhcd *ahcd, struct ed *ed)
+{
+ struct list_head *entry,*tmp;
+
+ admhc_dump_ed(ahcd, "ed update", ed, 1);
+
+ list_for_each_safe(entry, tmp, &ed->td_list) {
+ struct td *td = list_entry(entry, struct td, td_list);
+ struct urb *urb = td->urb;
+ struct urb_priv *urb_priv = urb->hcpriv;
+
+ if (hc32_to_cpup(ahcd, &td->hwINFO) & TD_OWN)
+ break;
+
+ /* update URB's length and status from TD */
+ td_done(ahcd, urb, td);
+ urb_priv->td_idx++;
+
+ /* If all this urb's TDs are done, call complete() */
+ if (urb_priv->td_idx == urb_priv->td_cnt)
+ finish_urb(ahcd, urb);
+
+ /* clean schedule: unlink EDs that are no longer busy */
+ if (list_empty(&ed->td_list)) {
+ if (ed->state == ED_OPER)
+ start_ed_unlink(ahcd, ed);
+
+ /* ... reenabling halted EDs only after fault cleanup */
+ } else if ((ed->hwINFO & cpu_to_hc32 (ahcd,
+ ED_SKIP | ED_DEQUEUE))
+ == cpu_to_hc32 (ahcd, ED_SKIP)) {
+ td = list_entry(ed->td_list.next, struct td, td_list);
+#if 0
+ if (!(td->hwINFO & cpu_to_hc32 (ahcd, TD_DONE))) {
+ ed->hwINFO &= ~cpu_to_hc32 (ahcd, ED_SKIP);
+ /* ... hc may need waking-up */
+ switch (ed->type) {
+ case PIPE_CONTROL:
+ admhc_writel (ahcd, OHCI_CLF,
+ &ahcd->regs->cmdstatus);
+ break;
+ case PIPE_BULK:
+ admhc_writel (ahcd, OHCI_BLF,
+ &ahcd->regs->cmdstatus);
+ break;
+ }
+ }
+#else
+ if ((td->hwINFO & cpu_to_hc32(ahcd, TD_OWN)))
+ ed->hwINFO &= ~cpu_to_hc32(ahcd, ED_SKIP);
+#endif
+ }
+
+ }
+}
+
+static void ed_halt(struct admhcd *ahcd, struct ed *ed)
+{
+ admhc_dump_ed(ahcd, "ed_halt", ed, 1);
+}
+
+/* there are some tds completed; called in_irq(), with HCD locked */
+static void admhc_td_complete(struct admhcd *ahcd)
+{
+ struct ed *ed;
+
+ for (ed = ahcd->ed_head; ed; ed = ed->ed_next) {
+ if (ed->state != ED_OPER)
+ continue;
+
+ if (hc32_to_cpup(ahcd, &ed->hwINFO) & ED_SKIP)
+ continue;
+
+ if (hc32_to_cpup(ahcd, &ed->hwHeadP) & ED_H) {
+ ed_halt(ahcd, ed);
+ continue;
+ }
+
+ ed_update(ahcd, ed);
+ }
+}
--- /dev/null
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
+ *
+ * This file is licenced under the GPL.
+ */
+
+/*
+ * __hc32 and __hc16 are "Host Controller" types, they may be equivalent to
+ * __leXX (normally) or __beXX (given OHCI_BIG_ENDIAN), depending on the
+ * host controller implementation.
+ */
+typedef __u32 __bitwise __hc32;
+typedef __u16 __bitwise __hc16;
+
+/*
+ * OHCI Endpoint Descriptor (ED) ... holds TD queue
+ * See OHCI spec, section 4.2
+ *
+ * This is a "Queue Head" for those transfers, which is why
+ * both EHCI and UHCI call similar structures a "QH".
+ */
+
+#define TD_DATALEN_MAX 4096
+
+#define ED_ALIGN 16
+#define ED_MASK ((u32)~(ED_ALIGN-1)) /* strip hw status in low addr bits */
+
+struct ed {
+ /* first fields are hardware-specified */
+ __hc32 hwINFO; /* endpoint config bitmap */
+ /* info bits defined by hcd */
+#define ED_DEQUEUE (1 << 27)
+ /* info bits defined by the hardware */
+#define ED_MPS_SHIFT 16
+#define ED_MPS_MASK ((1 << 11)-1)
+#define ED_MPS_GET(x) (((x) >> ED_MPS_SHIFT) & ED_MPS_MASK)
+#define ED_ISO (1 << 15) /* isochronous endpoint */
+#define ED_SKIP (1 << 14)
+#define ED_SPEED_FULL (1 << 13) /* fullspeed device */
+#define ED_INT (1 << 11) /* interrupt endpoint */
+#define ED_EN_SHIFT 7 /* endpoint shift */
+#define ED_EN_MASK ((1 << 4)-1) /* endpoint mask */
+#define ED_EN_GET(x) (((x) >> ED_EN_SHIFT) & ED_EN_MASK)
+#define ED_FA_MASK ((1 << 7)-1) /* function address mask */
+#define ED_FA_GET(x) ((x) & ED_FA_MASK)
+ __hc32 hwTailP; /* tail of TD list */
+ __hc32 hwHeadP; /* head of TD list (hc r/w) */
+#define ED_C (0x02) /* toggle carry */
+#define ED_H (0x01) /* halted */
+ __hc32 hwNextED; /* next ED in list */
+
+ /* rest are purely for the driver's use */
+ dma_addr_t dma; /* addr of ED */
+ struct td *dummy; /* next TD to activate */
+
+ struct list_head urb_list; /* list of our URBs */
+
+ struct list_head ed_list; /* list of all EDs*/
+ struct list_head rm_list; /* for remove list */
+
+ /* host's view of schedule */
+ struct ed *ed_next; /* on schedule list */
+ struct ed *ed_prev; /* for non-interrupt EDs */
+ struct ed *ed_rm_next; /* on rm list */
+ struct ed *ed_soft_list; /* on software int list */
+ struct list_head td_list; /* "shadow list" of our TDs */
+
+ /* create --> IDLE --> OPER --> ... --> IDLE --> destroy
+ * usually: OPER --> UNLINK --> (IDLE | OPER) --> ...
+ */
+ u8 state; /* ED_{IDLE,UNLINK,OPER} */
+#define ED_IDLE 0x00 /* NOT linked to HC */
+#define ED_UNLINK 0x01 /* being unlinked from hc */
+#define ED_OPER 0x02 /* IS linked to hc */
+
+ u8 type; /* PIPE_{BULK,...} */
+
+ /* periodic scheduling params (for intr and iso) */
+ u8 branch;
+ u16 interval;
+ u16 load;
+ u16 last_iso; /* iso only */
+
+ /* HC may see EDs on rm_list until next frame (frame_no == tick) */
+ u16 tick;
+} __attribute__ ((aligned(ED_ALIGN)));
+
+/*
+ * OHCI Transfer Descriptor (TD) ... one per transfer segment
+ * See OHCI spec, sections 4.3.1 (general = control/bulk/interrupt)
+ * and 4.3.2 (iso)
+ */
+
+#define TD_ALIGN 32
+#define TD_MASK ((u32)~(TD_ALIGN-1)) /* strip hw status in low addr bits */
+
+struct td {
+ /* first fields are hardware-specified */
+ __hc32 hwINFO; /* transfer info bitmask */
+
+ /* hwINFO bits */
+#define TD_OWN (1 << 31) /* owner of the descriptor */
+#define TD_CC_SHIFT 27 /* condition code */
+#define TD_CC_MASK 0xf
+#define TD_CC (TD_CC_MASK << TD_CC_SHIFT)
+#define TD_CC_GET(x) (((x) >> TD_CC_SHIFT) & TD_CC_MASK)
+
+#define TD_EC_SHIFT 25 /* error count */
+#define TD_EC_MASK 0x3
+#define TD_EC (TD_EC_MASK << TD_EC_SHIFT)
+#define TD_EC_GET(x) ((x >> TD_EC_SHIFT) & TD_EC_MASK)
+#define TD_T_SHIFT 23 /* data toggle state */
+#define TD_T_MASK 0x3
+#define TD_T (TD_T_MASK << TD_T_SHIFT)
+#define TD_T_DATA0 (0x2 << TD_T_SHIFT) /* DATA0 */
+#define TD_T_DATA1 (0x3 << TD_T_SHIFT) /* DATA1 */
+#define TD_T_CARRY (0x0 << TD_T_SHIFT) /* uses ED_C */
+#define TD_T_GET(x) (((x) >> TD_T_SHIFT) & TD_T_MASK)
+#define TD_DP_SHIFT 21 /* direction/pid */
+#define TD_DP_MASK 0x3
+#define TD_DP (TD_DP_MASK << TD_DP_SHIFT)
+#define TD_DP_SETUP (0x0 << TD_DP_SHIFT) /* SETUP pid */
+#define TD_DP_OUT (0x1 << TD_DP_SHIFT) /* OUT pid */
+#define TD_DP_IN (0x2 << TD_DP_SHIFT) /* IN pid */
+#define TD_ISI_SHIFT 8 /* Interrupt Service Interval */
+#define TD_ISI_MASK 0x3f
+#define TD_ISI_GET(x) (((x) >> TD_ISI_SHIFT) & TD_ISI_MASK)
+#define TD_FN_MASK 0x3f /* frame number */
+#define TD_FN_GET(x) ((x) & TD_FN_MASK)
+
+ __hc32 hwDBP; /* Data Buffer Pointer (or 0) */
+ __hc32 hwCBL; /* Controller/Buffer Length */
+
+ /* hwCBL bits */
+#define TD_BL_MASK 0xffff /* buffer length */
+#define TD_BL_GET(x) ((x) & TD_BL_MASK)
+#define TD_IE (1 << 16) /* interrupt enable */
+ __hc32 hwNextTD; /* Next TD Pointer */
+
+ /* rest are purely for the driver's use */
+ __u8 index;
+ struct ed *ed;
+ struct td *td_hash; /* dma-->td hashtable */
+ struct td *next_dl_td;
+ struct urb *urb;
+
+ dma_addr_t td_dma; /* addr of this TD */
+ dma_addr_t data_dma; /* addr of data it points to */
+
+ struct list_head td_list; /* "shadow list", TDs on same ED */
+
+ u32 flags;
+#define TD_FLAG_DONE (1 << 17) /* retired to done list */
+#define TD_FLAG_ISO (1 << 16) /* copy of ED_ISO */
+} __attribute__ ((aligned(TD_ALIGN))); /* c/b/i need 16; only iso needs 32 */
+
+/*
+ * Hardware transfer status codes -- CC from td->hwINFO
+ */
+#define TD_CC_NOERROR 0x00
+#define TD_CC_CRC 0x01
+#define TD_CC_BITSTUFFING 0x02
+#define TD_CC_DATATOGGLEM 0x03
+#define TD_CC_STALL 0x04
+#define TD_CC_DEVNOTRESP 0x05
+#define TD_CC_PIDCHECKFAIL 0x06
+#define TD_CC_UNEXPECTEDPID 0x07
+#define TD_CC_DATAOVERRUN 0x08
+#define TD_CC_DATAUNDERRUN 0x09
+ /* 0x0A, 0x0B reserved for hardware */
+#define TD_CC_BUFFEROVERRUN 0x0C
+#define TD_CC_BUFFERUNDERRUN 0x0D
+ /* 0x0E, 0x0F reserved for HCD */
+#define TD_CC_HCD0 0x0E
+#define TD_CC_NOTACCESSED 0x0F
+
+/*
+ * preshifted status codes
+ */
+#define TD_SCC_NOTACCESSED (TD_CC_NOTACCESSED << TD_CC_SHIFT)
+
+
+/* map OHCI TD status codes (CC) to errno values */
+static const int cc_to_error [16] = {
+ /* No Error */ 0,
+ /* CRC Error */ -EILSEQ,
+ /* Bit Stuff */ -EPROTO,
+ /* Data Togg */ -EILSEQ,
+ /* Stall */ -EPIPE,
+ /* DevNotResp */ -ETIME,
+ /* PIDCheck */ -EPROTO,
+ /* UnExpPID */ -EPROTO,
+ /* DataOver */ -EOVERFLOW,
+ /* DataUnder */ -EREMOTEIO,
+ /* (for hw) */ -EIO,
+ /* (for hw) */ -EIO,
+ /* BufferOver */ -ECOMM,
+ /* BuffUnder */ -ENOSR,
+ /* (for HCD) */ -EALREADY,
+ /* (for HCD) */ -EALREADY
+};
+
+#define NUM_INTS 32
+
+/*
+ * This is the structure of the OHCI controller's memory mapped I/O region.
+ * You must use readl() and writel() (in <asm/io.h>) to access these fields!!
+ * Layout is in section 7 (and appendix B) of the spec.
+ */
+struct admhcd_regs {
+ __hc32 gencontrol; /* General Control */
+ __hc32 int_status; /* Interrupt Status */
+ __hc32 int_enable; /* Interrupt Enable */
+ __hc32 reserved00;
+ __hc32 host_control; /* Host General Control */
+ __hc32 reserved01;
+ __hc32 fminterval; /* Frame Interval */
+ __hc32 fmnumber; /* Frame Number */
+ __hc32 reserved02;
+ __hc32 reserved03;
+ __hc32 reserved04;
+ __hc32 reserved05;
+ __hc32 reserved06;
+ __hc32 reserved07;
+ __hc32 reserved08;
+ __hc32 reserved09;
+ __hc32 reserved10;
+ __hc32 reserved11;
+ __hc32 reserved12;
+ __hc32 reserved13;
+ __hc32 reserved14;
+ __hc32 reserved15;
+ __hc32 reserved16;
+ __hc32 reserved17;
+ __hc32 reserved18;
+ __hc32 reserved19;
+ __hc32 reserved20;
+ __hc32 reserved21;
+ __hc32 lsthresh; /* Low Speed Threshold */
+ __hc32 rhdesc; /* Root Hub Descriptor */
+#define MAX_ROOT_PORTS 2
+ __hc32 portstatus[MAX_ROOT_PORTS]; /* Port Status */
+ __hc32 hosthead; /* Host Descriptor Head */
+} __attribute__ ((aligned(32)));
+
+/*
+ * General Control register bits
+ */
+#define ADMHC_CTRL_UHFE (1 << 0) /* USB Host Function Enable */
+#define ADMHC_CTRL_SIR (1 << 1) /* Software Interrupt request */
+#define ADMHC_CTRL_DMAA (1 << 2) /* DMA Arbitration Control */
+#define ADMHC_CTRL_SR (1 << 3) /* Software Reset */
+
+/*
+ * Host General Control register bits
+ */
+#define ADMHC_HC_BUSS 0x3 /* USB bus state */
+#define ADMHC_BUSS_RESET 0x0
+#define ADMHC_BUSS_RESUME 0x1
+#define ADMHC_BUSS_OPER 0x2
+#define ADMHC_BUSS_SUSPEND 0x3
+#define ADMHC_HC_DMAE (1 << 2) /* DMA enable */
+
+/*
+ * Interrupt Status/Enable register bits
+ */
+#define ADMHC_INTR_SOFI (1 << 4) /* start of frame */
+#define ADMHC_INTR_RESI (1 << 5) /* resume detected */
+#define ADMHC_INTR_BABI (1 << 8) /* babble detected */
+#define ADMHC_INTR_INSM (1 << 9) /* root hub status change */
+#define ADMHC_INTR_SO (1 << 10) /* scheduling overrun */
+#define ADMHC_INTR_FNO (1 << 11) /* frame number overflow */
+#define ADMHC_INTR_TDC (1 << 20) /* transfer descriptor completed */
+#define ADMHC_INTR_SWI (1 << 29) /* software interrupt */
+#define ADMHC_INTR_FATI (1 << 30) /* fatal error */
+#define ADMHC_INTR_INTA (1 << 31) /* interrupt active */
+
+#define ADMHC_INTR_MIE (1 << 31) /* master interrupt enable */
+
+/*
+ * SOF Frame Interval register bits
+ */
+#define ADMHC_SFI_FI_MASK ((1 << 14)-1) /* Frame Interval value */
+#define ADMHC_SFI_FSLDP_SHIFT 16
+#define ADMHC_SFI_FSLDP_MASK ((1 << 15)-1)
+#define ADMHC_SFI_FIT (1 << 31) /* Frame Interval Toggle */
+
+/*
+ * SOF Frame Number register bits
+ */
+#define ADMHC_SFN_FN_MASK ((1 << 16)-1) /* Frame Number Mask */
+#define ADMHC_SFN_FR_SHIFT 16 /* Frame Remaining Shift */
+#define ADMHC_SFN_FR_MASK ((1 << 14)-1) /* Frame Remaining Mask */
+#define ADMHC_SFN_FRT (1 << 31) /* Frame Remaining Toggle */
+
+/*
+ * Root Hub Descriptor register bits
+ */
+#define ADMHC_RH_NUMP 0xff /* number of ports */
+#define ADMHC_RH_PSM (1 << 8) /* power switching mode */
+#define ADMHC_RH_NPS (1 << 9) /* no power switching */
+#define ADMHC_RH_OCPM (1 << 10) /* over current protection mode */
+#define ADMHC_RH_NOCP (1 << 11) /* no over current protection */
+#define ADMHC_RH_PPCM (0xff << 16) /* port power control */
+
+#define ADMHC_RH_LPS (1 << 24) /* local power switch */
+#define ADMHC_RH_OCI (1 << 25) /* over current indicator */
+
+/* status change bits */
+#define ADMHC_RH_LPSC (1 << 26) /* local power switch change */
+#define ADMHC_RH_OCIC (1 << 27) /* over current indicator change */
+
+#define ADMHC_RH_DRWE (1 << 28) /* device remote wakeup enable */
+#define ADMHC_RH_CRWE (1 << 29) /* clear remote wakeup enable */
+
+#define ADMHC_RH_CGP (1 << 24) /* clear global power */
+#define ADMHC_RH_SGP (1 << 26) /* set global power */
+
+/*
+ * Port Status register bits
+ */
+#define ADMHC_PS_CCS (1 << 0) /* current connect status */
+#define ADMHC_PS_PES (1 << 1) /* port enable status */
+#define ADMHC_PS_PSS (1 << 2) /* port suspend status */
+#define ADMHC_PS_POCI (1 << 3) /* port over current indicator */
+#define ADMHC_PS_PRS (1 << 4) /* port reset status */
+#define ADMHC_PS_PPS (1 << 8) /* port power status */
+#define ADMHC_PS_LSDA (1 << 9) /* low speed device attached */
+
+/* status change bits */
+#define ADMHC_PS_CSC (1 << 16) /* connect status change */
+#define ADMHC_PS_PESC (1 << 17) /* port enable status change */
+#define ADMHC_PS_PSSC (1 << 18) /* port suspend status change */
+#define ADMHC_PS_OCIC (1 << 19) /* over current indicator change */
+#define ADMHC_PS_PRSC (1 << 20) /* port reset status change */
+
+/* port feature bits */
+#define ADMHC_PS_CPE (1 << 0) /* clear port enable */
+#define ADMHC_PS_SPE (1 << 1) /* set port enable */
+#define ADMHC_PS_SPS (1 << 2) /* set port suspend */
+#define ADMHC_PS_CPS (1 << 3) /* clear suspend status */
+#define ADMHC_PS_SPR (1 << 4) /* set port reset */
+#define ADMHC_PS_SPP (1 << 8) /* set port power */
+#define ADMHC_PS_CPP (1 << 9) /* clear port power */
+
+/*
+ * the POTPGT value is not defined in the ADMHC, so define a dummy value
+ */
+#define ADMHC_POTPGT 2 /* in ms */
+
+/* hcd-private per-urb state */
+struct urb_priv {
+ struct ed *ed;
+ struct list_head pending; /* URBs on the same ED */
+
+ u32 td_cnt; /* # tds in this request */
+ u32 td_idx; /* index of the current td */
+ struct td *td[0]; /* all TDs in this request */
+};
+
+#define TD_HASH_SIZE 64 /* power'o'two */
+/* sizeof (struct td) ~= 64 == 2^6 ... */
+#define TD_HASH_FUNC(td_dma) ((td_dma ^ (td_dma >> 6)) % TD_HASH_SIZE)
+
+/*
+ * This is the full ADMHCD controller description
+ *
+ * Note how the "proper" USB information is just
+ * a subset of what the full implementation needs. (Linus)
+ */
+
+struct admhcd {
+ spinlock_t lock;
+
+ /*
+ * I/O memory used to communicate with the HC (dma-consistent)
+ */
+ struct admhcd_regs __iomem *regs;
+
+ /*
+ * hcd adds to schedule for a live hc any time, but removals finish
+ * only at the start of the next frame.
+ */
+
+ struct ed *ed_head;
+ struct ed *ed_tails[4];
+
+ struct ed *ed_rm_list; /* to be removed */
+ struct ed *ed_halt_list; /* halted due to an error */
+ struct ed *ed_soft_list; /* for software interrupt processing */
+
+ struct ed *periodic[NUM_INTS]; /* shadow int_table */
+
+#if 0 /* TODO: remove? */
+ /*
+ * OTG controllers and transceivers need software interaction;
+ * other external transceivers should be software-transparent
+ */
+ struct otg_transceiver *transceiver;
+#endif
+
+ /*
+ * memory management for queue data structures
+ */
+ struct dma_pool *td_cache;
+ struct dma_pool *ed_cache;
+ struct td *td_hash[TD_HASH_SIZE];
+ struct list_head pending;
+
+ /*
+ * driver state
+ */
+ int num_ports;
+ int load[NUM_INTS];
+ u32 host_control; /* copy of the host_control reg */
+ unsigned long next_statechange; /* suspend/resume */
+ u32 fminterval; /* saved register */
+ unsigned autostop:1; /* rh auto stopping/stopped */
+
+ unsigned long flags; /* for HC bugs */
+#define OHCI_QUIRK_AMD756 0x01 /* erratum #4 */
+#define OHCI_QUIRK_SUPERIO 0x02 /* natsemi */
+#define OHCI_QUIRK_INITRESET 0x04 /* SiS, OPTi, ... */
+#define OHCI_QUIRK_BE_DESC 0x08 /* BE descriptors */
+#define OHCI_QUIRK_BE_MMIO 0x10 /* BE registers */
+#define OHCI_QUIRK_ZFMICRO 0x20 /* Compaq ZFMicro chipset*/
+ // there are also chip quirks/bugs in init logic
+};
+
+/* convert between an hcd pointer and the corresponding ahcd_hcd */
+static inline struct admhcd *hcd_to_admhcd(struct usb_hcd *hcd)
+{
+ return (struct admhcd *)(hcd->hcd_priv);
+}
+static inline struct usb_hcd *admhcd_to_hcd(const struct admhcd *ahcd)
+{
+ return container_of((void *)ahcd, struct usb_hcd, hcd_priv);
+}
+
+/*-------------------------------------------------------------------------*/
+
+#ifndef DEBUG
+#define STUB_DEBUG_FILES
+#endif /* DEBUG */
+
+#define admhc_dbg(ahcd, fmt, args...) \
+ dev_dbg(admhcd_to_hcd(ahcd)->self.controller , fmt , ## args )
+#define admhc_err(ahcd, fmt, args...) \
+ dev_err(admhcd_to_hcd(ahcd)->self.controller , fmt , ## args )
+#define ahcd_info(ahcd, fmt, args...) \
+ dev_info(admhcd_to_hcd(ahcd)->self.controller , fmt , ## args )
+#define admhc_warn(ahcd, fmt, args...) \
+ dev_warn(admhcd_to_hcd(ahcd)->self.controller , fmt , ## args )
+
+#ifdef ADMHC_VERBOSE_DEBUG
+# define admhc_vdbg admhc_dbg
+#else
+# define admhc_vdbg(ahcd, fmt, args...) do { } while (0)
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * While most USB host controllers implement their registers and
+ * in-memory communication descriptors in little-endian format,
+ * a minority (notably the IBM STB04XXX and the Motorola MPC5200
+ * processors) implement them in big endian format.
+ *
+ * In addition some more exotic implementations like the Toshiba
+ * Spider (aka SCC) cell southbridge are "mixed" endian, that is,
+ * they have a different endianness for registers vs. in-memory
+ * descriptors.
+ *
+ * This attempts to support either format at compile time without a
+ * runtime penalty, or both formats with the additional overhead
+ * of checking a flag bit.
+ *
+ * That leads to some tricky Kconfig rules howevber. There are
+ * different defaults based on some arch/ppc platforms, though
+ * the basic rules are:
+ *
+ * Controller type Kconfig options needed
+ * --------------- ----------------------
+ * little endian CONFIG_USB_ADMHC_LITTLE_ENDIAN
+ *
+ * fully big endian CONFIG_USB_ADMHC_BIG_ENDIAN_DESC _and_
+ * CONFIG_USB_ADMHC_BIG_ENDIAN_MMIO
+ *
+ * mixed endian CONFIG_USB_ADMHC_LITTLE_ENDIAN _and_
+ * CONFIG_USB_OHCI_BIG_ENDIAN_{MMIO,DESC}
+ *
+ * (If you have a mixed endian controller, you -must- also define
+ * CONFIG_USB_ADMHC_LITTLE_ENDIAN or things will not work when building
+ * both your mixed endian and a fully big endian controller support in
+ * the same kernel image).
+ */
+
+#ifdef CONFIG_USB_ADMHC_BIG_ENDIAN_DESC
+#ifdef CONFIG_USB_ADMHC_LITTLE_ENDIAN
+#define big_endian_desc(ahcd) (ahcd->flags & OHCI_QUIRK_BE_DESC)
+#else
+#define big_endian_desc(ahcd) 1 /* only big endian */
+#endif
+#else
+#define big_endian_desc(ahcd) 0 /* only little endian */
+#endif
+
+#ifdef CONFIG_USB_ADMHC_BIG_ENDIAN_MMIO
+#ifdef CONFIG_USB_ADMHC_LITTLE_ENDIAN
+#define big_endian_mmio(ahcd) (ahcd->flags & OHCI_QUIRK_BE_MMIO)
+#else
+#define big_endian_mmio(ahcd) 1 /* only big endian */
+#endif
+#else
+#define big_endian_mmio(ahcd) 0 /* only little endian */
+#endif
+
+/*
+ * Big-endian read/write functions are arch-specific.
+ * Other arches can be added if/when they're needed.
+ *
+ * REVISIT: arch/powerpc now has readl/writel_be, so the
+ * definition below can die once the STB04xxx support is
+ * finally ported over.
+ */
+#if defined(CONFIG_PPC) && !defined(CONFIG_PPC_MERGE)
+#define readl_be(addr) in_be32((__force unsigned *)addr)
+#define writel_be(val, addr) out_be32((__force unsigned *)addr, val)
+#endif
+
+static inline unsigned int admhc_readl(const struct admhcd *ahcd,
+ __hc32 __iomem *regs)
+{
+#ifdef CONFIG_USB_ADMHC_BIG_ENDIAN_MMIO
+ return big_endian_mmio(ahcd) ?
+ readl_be(regs) :
+ readl(regs);
+#else
+ return readl(regs);
+#endif
+}
+
+static inline void admhc_writel(const struct admhcd *ahcd,
+ const unsigned int val, __hc32 __iomem *regs)
+{
+#ifdef CONFIG_USB_ADMHC_BIG_ENDIAN_MMIO
+ big_endian_mmio(ahcd) ?
+ writel_be(val, regs) :
+ writel(val, regs);
+#else
+ writel(val, regs);
+#endif
+}
+
+static inline void admhc_writel_flush(const struct admhcd *ahcd)
+{
+#if 0 /* TODO: needed? */
+ (void) admhc_readl(ahcd, &ahcd->regs->control);
+#endif
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* cpu to ahcd */
+static inline __hc16 cpu_to_hc16(const struct admhcd *ahcd, const u16 x)
+{
+ return big_endian_desc(ahcd) ?
+ (__force __hc16)cpu_to_be16(x) :
+ (__force __hc16)cpu_to_le16(x);
+}
+
+static inline __hc16 cpu_to_hc16p(const struct admhcd *ahcd, const u16 *x)
+{
+ return big_endian_desc(ahcd) ?
+ cpu_to_be16p(x) :
+ cpu_to_le16p(x);
+}
+
+static inline __hc32 cpu_to_hc32(const struct admhcd *ahcd, const u32 x)
+{
+ return big_endian_desc(ahcd) ?
+ (__force __hc32)cpu_to_be32(x) :
+ (__force __hc32)cpu_to_le32(x);
+}
+
+static inline __hc32 cpu_to_hc32p(const struct admhcd *ahcd, const u32 *x)
+{
+ return big_endian_desc(ahcd) ?
+ cpu_to_be32p(x) :
+ cpu_to_le32p(x);
+}
+
+/* ahcd to cpu */
+static inline u16 hc16_to_cpu(const struct admhcd *ahcd, const __hc16 x)
+{
+ return big_endian_desc(ahcd) ?
+ be16_to_cpu((__force __be16)x) :
+ le16_to_cpu((__force __le16)x);
+}
+
+static inline u16 hc16_to_cpup(const struct admhcd *ahcd, const __hc16 *x)
+{
+ return big_endian_desc(ahcd) ?
+ be16_to_cpup((__force __be16 *)x) :
+ le16_to_cpup((__force __le16 *)x);
+}
+
+static inline u32 hc32_to_cpu(const struct admhcd *ahcd, const __hc32 x)
+{
+ return big_endian_desc(ahcd) ?
+ be32_to_cpu((__force __be32)x) :
+ le32_to_cpu((__force __le32)x);
+}
+
+static inline u32 hc32_to_cpup(const struct admhcd *ahcd, const __hc32 *x)
+{
+ return big_endian_desc(ahcd) ?
+ be32_to_cpup((__force __be32 *)x) :
+ le32_to_cpup((__force __le32 *)x);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static inline u16 admhc_frame_no(const struct admhcd *ahcd)
+{
+ u32 t;
+
+ t = admhc_readl(ahcd, &ahcd->regs->fmnumber) & ADMHC_SFN_FN_MASK;
+ return (u16)t;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static inline void admhc_disable(struct admhcd *ahcd)
+{
+ admhcd_to_hcd(ahcd)->state = HC_STATE_HALT;
+}
+
+#define FI 0x2edf /* 12000 bits per frame (-1) */
+#define FSLDP(fi) (0x7fff & ((6 * ((fi) - 210)) / 7))
+#define FIT ADMHC_SFI_FIT
+#define LSTHRESH 0x628 /* lowspeed bit threshold */
+
+static inline void periodic_reinit(struct admhcd *ahcd)
+{
+ u32 fi = ahcd->fminterval & ADMHC_SFI_FI_MASK;
+ u32 fit = admhc_readl(ahcd, &ahcd->regs->fminterval) & FIT;
+
+ /* TODO: adjust FSLargestDataPacket value too? */
+ admhc_writel(ahcd, (fit ^ FIT) | ahcd->fminterval,
+ &ahcd->regs->fminterval);
+}
+
+static inline u32 admhc_get_rhdesc(struct admhcd *ahcd)
+{
+ return admhc_readl(ahcd, &ahcd->regs->rhdesc);
+}
+
+static inline u32 admhc_get_portstatus(struct admhcd *ahcd, int port)
+{
+ return admhc_readl(ahcd, &ahcd->regs->portstatus[port]);
+}
+
+static inline void roothub_write_status(struct admhcd *ahcd, u32 value)
+{
+ /* FIXME: read-only bits must be masked out */
+ admhc_writel(ahcd, value, &ahcd->regs->rhdesc);
+}
+
+static inline void admhc_intr_disable(struct admhcd *ahcd, u32 ints)
+{
+ u32 t;
+
+ t = admhc_readl(ahcd, &ahcd->regs->int_enable);
+ t &= ~(ints);
+ admhc_writel(ahcd, t, &ahcd->regs->int_enable);
+ /* TODO: flush writes ?*/
+}
+
+static inline void admhc_intr_enable(struct admhcd *ahcd, u32 ints)
+{
+ u32 t;
+
+ t = admhc_readl(ahcd, &ahcd->regs->int_enable);
+ t |= ints;
+ admhc_writel(ahcd, t, &ahcd->regs->int_enable);
+ /* TODO: flush writes ?*/
+}
+
+static inline void admhc_intr_ack(struct admhcd *ahcd, u32 ints)
+{
+ admhc_writel(ahcd, ints, &ahcd->regs->int_status);
+}
+
+static inline void admhc_dma_enable(struct admhcd *ahcd)
+{
+ ahcd->host_control = admhc_readl(ahcd, &ahcd->regs->host_control);
+ if (ahcd->host_control & ADMHC_HC_DMAE)
+ return;
+
+ ahcd->host_control |= ADMHC_HC_DMAE;
+ admhc_writel(ahcd, ahcd->host_control, &ahcd->regs->host_control);
+}
+
+static inline void admhc_dma_disable(struct admhcd *ahcd)
+{
+ ahcd->host_control = admhc_readl(ahcd, &ahcd->regs->host_control);
+ ahcd->host_control &= ~ADMHC_HC_DMAE;
+ admhc_writel(ahcd, ahcd->host_control, &ahcd->regs->host_control);
+}
extern struct platform_device adm5120_flash0_device;
extern struct platform_device adm5120_flash1_device;
extern struct platform_device adm5120_nand_device;
-extern struct platform_device adm5120_usbc_device;
+extern struct platform_device adm5120_hcd_device;
extern struct platform_device adm5120_pci_device;
extern struct platform_device adm5120_switch_device;
extern struct amba_device adm5120_uart0_device;
-Index: linux-2.6.22.1/drivers/usb/core/hub.c
-===================================================================
---- linux-2.6.22.1.orig/drivers/usb/core/hub.c
-+++ linux-2.6.22.1/drivers/usb/core/hub.c
-@@ -540,7 +540,7 @@ static int hub_hub_status(struct usb_hub
- "%s failed (err = %d)\n", __FUNCTION__, ret);
- else {
- *status = le16_to_cpu(hub->status->hub.wHubStatus);
-- *change = le16_to_cpu(hub->status->hub.wHubChange);
-+ *change = le16_to_cpu(hub->status->hub.wHubChange);
- ret = 0;
- }
- mutex_unlock(&hub->status_mutex);
-@@ -1424,7 +1424,7 @@ static int hub_port_status(struct usb_hu
- ret = -EIO;
- } else {
- *status = le16_to_cpu(hub->status->port.wPortStatus);
-- *change = le16_to_cpu(hub->status->port.wPortChange);
-+ *change = le16_to_cpu(hub->status->port.wPortChange);
- ret = 0;
- }
- mutex_unlock(&hub->status_mutex);
-@@ -2230,6 +2230,8 @@ hub_port_init (struct usb_hub *hub, stru
- USB_DT_DEVICE << 8, 0,
- buf, GET_DESCRIPTOR_BUFSIZE,
- USB_CTRL_GET_TIMEOUT);
-+printk(KERN_CRIT "usb_control_msg: %d %d %d (%d)\n", r, buf->bMaxPacketSize0,
-+buf->bDescriptorType, USB_DT_DEVICE);
- switch (buf->bMaxPacketSize0) {
- case 8: case 16: case 32: case 64: case 255:
- if (buf->bDescriptorType ==
Index: linux-2.6.22.1/drivers/usb/host/Kconfig
===================================================================
--- linux-2.6.22.1.orig/drivers/usb/host/Kconfig
module will be called "sl811_cs".
+config USB_ADM5120_HCD
-+ tristate "ADM5120 HCD support"
-+ depends on USB && MIPS_ADM5120
++ tristate "ADM5120 HCD support (EXPERIMENTAL)"
++ depends on USB && MIPS_ADM5120 && EXPERIMENTAL
Index: linux-2.6.22.1/drivers/usb/host/Makefile
===================================================================
--- linux-2.6.22.1.orig/drivers/usb/host/Makefile
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