diff options
Diffstat (limited to 'target/linux/adm5120')
6 files changed, 948 insertions, 452 deletions
diff --git a/target/linux/adm5120/files/drivers/usb/host/adm5120-dbg.c b/target/linux/adm5120/files/drivers/usb/host/adm5120-dbg.c index 648576c..17d4ad4 100644 --- a/target/linux/adm5120/files/drivers/usb/host/adm5120-dbg.c +++ b/target/linux/adm5120/files/drivers/usb/host/adm5120-dbg.c @@ -33,8 +33,6 @@ static inline char *ed_statestring(int state) return "UNLINK"; case ED_OPER: return "OPER"; - case ED_NEW: - return "NEW"; } return "?STATE"; } @@ -70,18 +68,20 @@ static inline char *td_togglestring(u32 info) return "?TOGGLE"; } +/*-------------------------------------------------------------------------*/ + #ifdef DEBUG /* debug| print the main components of an URB * small: 0) header + data packets 1) just header */ static void __attribute__((unused)) -urb_print(struct admhcd *ahcd, struct urb * urb, char * str, int small) +urb_print(struct admhcd *ahcd, struct urb *urb, char * str, int small) { unsigned int pipe = urb->pipe; if (!urb->dev || !urb->dev->bus) { - admhc_dbg(ahcd, "%s URB: no dev", str); + admhc_dbg("%s URB: no dev", str); return; } @@ -89,11 +89,11 @@ urb_print(struct admhcd *ahcd, struct urb * urb, char * str, int small) if (urb->status != 0) #endif admhc_dbg(ahcd, "URB-%s %p dev=%d ep=%d%s-%s flags=%x len=%d/%d " - "stat=%d\n", + "stat=%d", str, urb, - usb_pipedevice(pipe), - usb_pipeendpoint(pipe), + usb_pipedevice (pipe), + usb_pipeendpoint (pipe), usb_pipeout(pipe)? "out" : "in", pipestring(pipe), urb->transfer_flags, @@ -106,20 +106,20 @@ urb_print(struct admhcd *ahcd, struct urb * urb, char * str, int small) int i, len; if (usb_pipecontrol(pipe)) { - admhc_dbg(admhc, "setup(8): "); + admhc_dbg(ahcd, "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) { - admhc_dbg(admhc, "data(%d/%d): ", + 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); + admhc_dbg("%s stat:%d\n", i < len? "...": "", urb->status); } } #endif /* ADMHC_VERBOSE_DEBUG */ @@ -318,18 +318,6 @@ static void admhc_dump_td(const struct admhcd *ahcd, const char *label, (tmp & TD_IE) ? " IE" : ""); } -static void admhc_dump_up(const struct admhcd *ahcd, const char *label, - const struct urb_priv *up) -{ - int i; - - admhc_dbg(ahcd, "%s urb/%p:\n", label, up->urb); - for (i = 0; i < up->td_cnt; i++) { - struct td *td = up->td[i]; - admhc_dump_td(ahcd, " ->", td); - } -} - /* caller MUST own hcd spinlock if verbose is set! */ static void __attribute__((unused)) admhc_dump_ed(const struct admhcd *ahcd, const char *label, @@ -352,22 +340,23 @@ admhc_dump_ed(const struct admhcd *ahcd, const char *label, ED_FA_GET(tmp)); tmp = hc32_to_cpup(ahcd, &ed->hwHeadP); - admhc_dbg(ahcd, " tds: head %08x tail %08x %s%s\n", + admhc_dbg(ahcd, " tds: head %08x tail %08x %s%s%s\n", tmp & TD_MASK, - hc32_to_cpup(ahcd, &ed->hwTailP), + hc32_to_cpup (ahcd, &ed->hwTailP), (tmp & ED_C) ? data1 : data0, - (tmp & ED_H) ? " HALT" : ""); - - if (ed->urb_active) - admhc_dump_up(ahcd, " active ", ed->urb_active); + (tmp & ED_H) ? " HALT" : "", + verbose ? " td list follows" : " (not listing)"); - if ((verbose) && (!list_empty(&ed->urb_pending))) { - struct list_head *entry; - /* dump pending URBs */ - list_for_each(entry, &ed->urb_pending) { - struct urb_priv *up; - up = list_entry(entry, struct urb_priv, pending); - admhc_dump_up(ahcd, " pending ", up); + 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); } } } @@ -375,8 +364,6 @@ admhc_dump_ed(const struct admhcd *ahcd, const char *label, #else /* ifdef DEBUG */ static inline void urb_print(struct urb * urb, char * str, int small) {} -static inline void admhc_dump_up(const struct admhcd *ahcd, const char *label, - const struct urb_priv *up) {} static inline void admhc_dump_ed(const struct admhcd *ahcd, const char *label, const struct ed *ed, int verbose) {} static inline void admhc_dump_td(const struct admhcd *ahcd, const char *label, @@ -397,44 +384,6 @@ static inline void remove_debug_files(struct admhcd *bus) { } #else static ssize_t -show_urb_priv(struct admhcd *ahcd, char *buf, size_t count, - struct urb_priv *up) -{ - unsigned temp, size = count; - int i; - - if (!up) - return 0; - - temp = scnprintf(buf, size,"\n\turb %p ", up->urb); - size -= temp; - buf += temp; - - for (i = 0; i< up->td_cnt; i++) { - struct td *td; - u32 dbp, cbl, info; - - td = up->td[i]; - 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\t\ttd %p %s %d %s%scc=%x (%08x,%08x)", - td, - td_pidstring(info), - TD_BL_GET(cbl), - (info & TD_OWN) ? "WORK " : "DONE ", - (cbl & TD_IE) ? "IE " : "", - TD_CC_GET(info), info, cbl); - size -= temp; - buf += temp; - } - - return count - size; -} - -static ssize_t show_list(struct admhcd *ahcd, char *buf, size_t count, struct ed *ed) { unsigned temp, size = count; @@ -446,10 +395,15 @@ show_list(struct admhcd *ahcd, char *buf, size_t count, struct ed *ed) while (ed) { u32 info = hc32_to_cpu(ahcd, ed->hwINFO); u32 headp = hc32_to_cpu(ahcd, ed->hwHeadP); + u32 tailp = hc32_to_cpu(ahcd, ed->hwTailP); + 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/%p %s %s %cs dev%d ep%d %s%smax %d %08x%s%s %s" + " h:%08x t:%08x", ed, + ed_statestring(ed->state), ed_typestring (ed->type), (info & ED_SPEED_FULL) ? 'f' : 'l', info & ED_FA_MASK, @@ -460,45 +414,37 @@ show_list(struct admhcd *ahcd, char *buf, size_t count, struct ed *ed) info, (info & ED_SKIP) ? " S" : "", (headp & ED_H) ? " H" : "", - (headp & ED_C) ? "DATA1" : "DATA0"); + (headp & ED_C) ? data1 : data0, + headp & ED_MASK,tailp); size -= temp; buf += temp; - if (ed->urb_active) { - temp = scnprintf(buf, size, "\nactive urb:"); - size -= temp; - buf += temp; - - temp = show_urb_priv(ahcd, buf, size, ed->urb_active); + 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, + td_pidstring(info), + TD_BL_GET(cbl), + (info & TD_OWN) ? "" : "DONE ", + (cbl & TD_IE) ? "IE " : "", + TD_CC_GET (info), td->urb, info, cbl); size -= temp; buf += temp; } - if (!list_empty(&ed->urb_pending)) { - struct list_head *entry; - - temp = scnprintf(buf, size, "\npending urbs:"); - size -= temp; - buf += temp; - - list_for_each(entry, &ed->urb_pending) { - struct urb_priv *up; - up = list_entry(entry, struct urb_priv, - pending); - - temp = show_urb_priv(ahcd, buf, size, up); - size -= temp; - buf += temp; - } - } - temp = scnprintf(buf, size, "\n"); size -= temp; buf += temp; ed = ed->ed_next; } - return count - size; } @@ -524,6 +470,108 @@ show_async(struct class_device *class_dev, char *buf) } 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) { @@ -610,6 +658,7 @@ static inline void create_debug_files (struct admhcd *ahcd) 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"); } @@ -619,6 +668,7 @@ 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); } diff --git a/target/linux/adm5120/files/drivers/usb/host/adm5120-drv.c b/target/linux/adm5120/files/drivers/usb/host/adm5120-drv.c index 67c771c..965c391 100644 --- a/target/linux/adm5120/files/drivers/usb/host/adm5120-drv.c +++ b/target/linux/adm5120/files/drivers/usb/host/adm5120-drv.c @@ -171,7 +171,7 @@ static const struct hc_driver adm5120_hc_driver = { .hub_status_data = admhc_hub_status_data, .hub_control = admhc_hub_control, .hub_irq_enable = admhc_hub_irq_enable, -#ifdef CONFIG_PM +#ifdef CONFIG_PM .bus_suspend = admhc_bus_suspend, .bus_resume = admhc_bus_resume, #endif @@ -202,6 +202,7 @@ static int usb_hcd_adm5120_remove(struct platform_device *pdev) } #ifdef CONFIG_PM +/* TODO */ static int usb_hcd_adm5120_suspend(struct platform_device *dev) { struct usb_hcd *hcd = platform_get_drvdata(dev); diff --git a/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c b/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c index 48514d5..30fe132 100644 --- a/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c +++ b/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c @@ -45,7 +45,7 @@ #include "../core/hcd.h" #include "../core/hub.h" -#define DRIVER_VERSION "v0.06" +#define DRIVER_VERSION "v0.10" #define DRIVER_AUTHOR "Gabor Juhos <juhosg at openwrt.org>" #define DRIVER_DESC "ADMtek USB 1.1 Host Controller Driver" @@ -58,8 +58,7 @@ #define ADMHC_INTR_INIT \ ( ADMHC_INTR_MIE | ADMHC_INTR_INSM | ADMHC_INTR_FATI \ - | ADMHC_INTR_RESI | ADMHC_INTR_TDC | ADMHC_INTR_BABI \ - | ADMHC_INTR_7 | ADMHC_INTR_6 ) + | ADMHC_INTR_RESI | ADMHC_INTR_TDC | ADMHC_INTR_BABI ) /*-------------------------------------------------------------------------*/ @@ -115,12 +114,10 @@ static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep, /* 1 TD for setup, 1 for ACK, plus ... */ td_cnt = 2; - if (urb->transfer_buffer_length) - td_cnt++; - break; + /* FALLTHROUGH */ case PIPE_BULK: /* one TD for every 4096 Bytes (can be upto 8K) */ - td_cnt = urb->transfer_buffer_length / TD_DATALEN_MAX; + 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++; @@ -156,7 +153,6 @@ static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep, return -ENOMEM; urb_priv->ed = ed; - urb_priv->urb = urb; spin_lock_irqsave(&ahcd->lock, flags); /* don't submit to a dead HC */ @@ -179,8 +175,13 @@ static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep, goto fail; } - if (ed->type == PIPE_ISOCHRONOUS) { - if (ed->state == ED_NEW) { + /* schedule the ed if needed */ + if (ed->state == ED_IDLE) { + ret = ed_schedule(ahcd, ed); + if (ret < 0) + goto fail0; + + if (ed->type == PIPE_ISOCHRONOUS) { u16 frame = admhc_frame_no(ahcd); /* delay a few frames before the first TD */ @@ -192,25 +193,25 @@ static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep, /* yes, only URB_ISO_ASAP is supported, and * urb->start_frame is never used as input. */ - } else - urb->start_frame = ed->last_iso + ed->interval; - } + } + } 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_priv->urb); - - /* append it to the ED's queue */ - list_add_tail(&urb_priv->pending, &ed->urb_pending); - - /* schedule the ED */ - ret = ed_schedule(ahcd, ed); + td_submit_urb(ahcd, urb); +#ifdef ADMHC_VERBOSE_DEBUG + admhc_dump_ed(ahcd, "admhc_urb_enqueue", urb_priv->ed, 1); +#endif +fail0: spin_unlock(&urb->lock); fail: - if (ret) { - urb_priv = urb->hcpriv; + if (ret) urb_priv_free(ahcd, urb_priv); - } spin_unlock_irqrestore(&ahcd->lock, flags); return ret; @@ -225,43 +226,32 @@ fail: static int admhc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb) { struct admhcd *ahcd = hcd_to_admhcd(hcd); - struct urb_priv *up; unsigned long flags; - up = urb->hcpriv; - if (!up) - return 0; - - spin_lock_irqsave(&ahcd->lock, flags); - #ifdef ADMHC_VERBOSE_DEBUG - urb_print(ahcd, urb, "DEQEUE", 1); + urb_print(ahcd, urb, "DEQUEUE", 1); #endif + 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() */ - if (up->ed->urb_active != up) { - list_del(&up->pending); - finish_urb(ahcd, urb); - } else { - ed_start_deschedule(ahcd, up->ed); + 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 (up->ed->urb_active != up) { - list_del(&up->pending); + if (urb->hcpriv) finish_urb(ahcd, urb); - } else { - finish_urb(ahcd, urb); - up->ed->urb_active = NULL; - up->ed->state = ED_IDLE; - } } spin_unlock_irqrestore(&ahcd->lock, flags); @@ -273,6 +263,7 @@ static int admhc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb) /* 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) { @@ -298,8 +289,8 @@ rescan: if (!HC_IS_RUNNING(hcd->state)) { sanitize: - ed->state = ED_UNLINK; - admhc_finish_unlinks(ahcd, 0); + ed->state = ED_IDLE; + finish_unlinks(ahcd, 0); } switch (ed->state) { @@ -312,11 +303,10 @@ sanitize: spin_unlock_irqrestore(&ahcd->lock, flags); schedule_timeout_uninterruptible(1); goto rescan; - case ED_IDLE: - case ED_NEW: /* fully unlinked */ - if (list_empty(&ed->urb_pending)) { - td_free(ahcd, ed->dummy); - ed_free(ahcd, ed); + case ED_IDLE: /* fully unlinked */ + if (list_empty(&ed->td_list)) { + td_free (ahcd, ed->dummy); + ed_free (ahcd, ed); break; } /* else FALL THROUGH */ @@ -324,11 +314,10 @@ sanitize: /* 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) %s act %p%s\n", - ed, ep->desc.bEndpointAddress, - ed_statestring(ed->state), - ed->urb_active, - list_empty(&ed->urb_pending) ? "" : " (has urbs)"); + 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; } @@ -347,9 +336,15 @@ static int admhc_get_frame_number(struct usb_hcd *hcd) static void admhc_usb_reset(struct admhcd *ahcd) { - admhc_dbg(ahcd, "usb reset\n"); +#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); + admhc_writel(ahcd, ahcd->host_control ,&ahcd->regs->host_control); +#endif } /* admhc_shutdown forcibly disables IRQs and DMA, helping kexec and @@ -361,12 +356,12 @@ admhc_shutdown(struct usb_hcd *hcd) { struct admhcd *ahcd; - admhc_dbg(ahcd, "shutdown\n"); - 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); } /*-------------------------------------------------------------------------* @@ -398,7 +393,7 @@ static void admhc_eds_cleanup(struct admhcd *ahcd) ahcd->ed_head = NULL; } -#define ED_DUMMY_INFO 0 +#define ED_DUMMY_INFO (ED_SPEED_FULL | ED_SKIP) static int admhc_eds_init(struct admhcd *ahcd) { @@ -514,6 +509,17 @@ static int admhc_run(struct admhcd *ahcd) /* also: power/overcurrent flags in rhdesc */ } +#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 + switch (ahcd->host_control & ADMHC_HC_BUSS) { case ADMHC_BUSS_OPER: temp = 0; @@ -531,14 +537,19 @@ static int admhc_run(struct admhcd *ahcd) break; } admhc_writel(ahcd, ahcd->host_control, &ahcd->regs->host_control); - msleep(temp); + /* flush the writes */ + admhc_writel_flush(ahcd); + + msleep(temp); temp = admhc_read_rhdesc(ahcd); if (!(temp & ADMHC_RH_NPS)) { /* power down each port */ for (temp = 0; temp < ahcd->num_ports; temp++) admhc_write_portstatus(ahcd, temp, ADMHC_PS_CPP); } + /* flush those writes */ + admhc_writel_flush(ahcd); /* 2msec timelimit here means no irqs/preempt */ spin_lock_irq(&ahcd->lock); @@ -566,10 +577,25 @@ static int admhc_run(struct admhcd *ahcd) hcd->poll_rh = 1; hcd->uses_new_polling = 1; +#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 + + /* 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); + + /* flush those writes */ + admhc_writel_flush(ahcd); + /* start controller operations */ ahcd->host_control = ADMHC_BUSS_OPER; admhc_writel(ahcd, ahcd->host_control, &ahcd->regs->host_control); - hcd->state = HC_STATE_RUNNING; temp = 20; while ((admhc_readl(ahcd, &ahcd->regs->host_control) @@ -582,24 +608,31 @@ static int admhc_run(struct admhcd *ahcd) mdelay(1); } + hcd->state = HC_STATE_RUNNING; + + ahcd->next_statechange = jiffies + STATECHANGE_DELAY; + #if 0 - /* FIXME */ - /* wake on ConnectStatusChange, matching external hubs */ - admhc_writel(ahcd, ADMHC_RH_DRWE, &ahcd->regs->rhdesc); -#endif + /* FIXME: enabling DMA is always failed here for an unknown reason */ + admhc_dma_enable(ahcd); - /* Choose the interrupts we care about now, others later on demand */ - temp = ADMHC_INTR_INIT; - admhc_intr_ack(ahcd, ~0); - admhc_intr_enable(ahcd, temp); + 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); + } - admhc_writel(ahcd, ADMHC_RH_NPS | ADMHC_RH_LPSC, &ahcd->regs->rhdesc); +#endif - ahcd->next_statechange = jiffies + STATECHANGE_DELAY; spin_unlock_irq(&ahcd->lock); mdelay(ADMHC_POTPGT); - hcd->state = HC_STATE_RUNNING; return 0; } @@ -615,38 +648,25 @@ static irqreturn_t admhc_irq(struct usb_hcd *hcd) u32 ints; ints = admhc_readl(ahcd, ®s->int_status); - if (!(ints & ADMHC_INTR_INTA)) { + if ((ints & ADMHC_INTR_INTA) == 0) { /* no unmasked interrupt status is set */ - admhc_err(ahcd, "spurious interrupt %08x\n", ints); return IRQ_NONE; } ints &= admhc_readl(ahcd, ®s->int_enable); - if (!ints) { - admhc_err(ahcd, "hardware irq problems?\n"); - return IRQ_NONE; - } - - if (ints & ADMHC_INTR_6) { - admhc_err(ahcd, "unknown interrupt 6\n"); - admhc_dump(ahcd, 0); - } - - if (ints & ADMHC_INTR_7) { - admhc_err(ahcd, "unknown interrupt 7\n"); - admhc_dump(ahcd, 0); - } 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); } if (ints & ADMHC_INTR_BABI) { - admhc_disable(ahcd); + admhc_intr_disable(ahcd, ADMHC_INTR_BABI); + admhc_intr_ack(ahcd, ADMHC_INTR_BABI); admhc_err(ahcd, "Babble Detected\n"); - admhc_usb_reset(ahcd); } if (ints & ADMHC_INTR_INSM) { @@ -682,6 +702,7 @@ static irqreturn_t admhc_irq(struct usb_hcd *hcd) 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); @@ -693,19 +714,45 @@ static irqreturn_t admhc_irq(struct usb_hcd *hcd) if (ints & ADMHC_INTR_SO) { /* could track INTR_SO to reduce available PCI/... bandwidth */ - admhc_err(ahcd, "Schedule Overrun\n"); + admhc_vdbg(ahcd, "Schedule Overrun\n"); } +#if 1 + spin_lock(&ahcd->lock); + if (ahcd->ed_rm_list) + finish_unlinks(ahcd, admhc_frame_no(ahcd)); + + 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 */ - admhc_finish_unlinks(ahcd, admhc_frame_no(ahcd)); + 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 if (HC_IS_RUNNING(hcd->state)) { admhc_intr_ack(ahcd, ints); admhc_intr_enable(ahcd, ADMHC_INTR_MIE); + admhc_writel_flush(ahcd); } return IRQ_HANDLED; @@ -722,7 +769,7 @@ static void admhc_stop(struct usb_hcd *hcd) flush_scheduled_work(); admhc_usb_reset(ahcd); - admhc_intr_disable(ahcd, ~0); + admhc_intr_disable(ahcd, ADMHC_INTR_MIE); free_irq(hcd->irq, hcd); hcd->irq = -1; diff --git a/target/linux/adm5120/files/drivers/usb/host/adm5120-mem.c b/target/linux/adm5120/files/drivers/usb/host/adm5120-mem.c index daf59bc..924221b 100644 --- a/target/linux/adm5120/files/drivers/usb/host/adm5120-mem.c +++ b/target/linux/adm5120/files/drivers/usb/host/adm5120-mem.c @@ -27,6 +27,7 @@ static void admhc_hcd_init(struct admhcd *ahcd) { ahcd->next_statechange = jiffies; spin_lock_init(&ahcd->lock); + INIT_LIST_HEAD(&ahcd->pending); } /*-------------------------------------------------------------------------*/ @@ -75,6 +76,19 @@ static void admhc_mem_cleanup(struct admhcd *ahcd) /*-------------------------------------------------------------------------*/ +/* 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) { @@ -87,13 +101,29 @@ static struct td *td_alloc(struct admhcd *ahcd, gfp_t mem_flags) /* 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); } @@ -112,7 +142,8 @@ static struct ed *ed_alloc(struct admhcd *ahcd, gfp_t mem_flags) memset(ed, 0, sizeof(*ed)); ed->dma = dma; - INIT_LIST_HEAD(&ed->urb_pending); + INIT_LIST_HEAD(&ed->td_list); + INIT_LIST_HEAD(&ed->urb_list); return ed; } @@ -133,6 +164,7 @@ static void urb_priv_free(struct admhcd *ahcd, struct urb_priv *urb_priv) if (urb_priv->td[i]) td_free(ahcd, urb_priv->td[i]); + list_del(&urb_priv->pending); kfree(urb_priv); } @@ -140,23 +172,20 @@ static struct urb_priv *urb_priv_alloc(struct admhcd *ahcd, int num_tds, gfp_t mem_flags) { struct urb_priv *priv; - int i; /* 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 */ - for (i = 0; i < num_tds; i++) { - priv->td[i] = td_alloc(ahcd, mem_flags); - if (priv->td[i] == NULL) + /* 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; - priv->td[i]->index = i; } INIT_LIST_HEAD(&priv->pending); - priv->td_cnt = num_tds; return priv; diff --git a/target/linux/adm5120/files/drivers/usb/host/adm5120-q.c b/target/linux/adm5120/files/drivers/usb/host/adm5120-q.c index c96c327..24acc87 100644 --- a/target/linux/adm5120/files/drivers/usb/host/adm5120-q.c +++ b/target/linux/adm5120/files/drivers/usb/host/adm5120-q.c @@ -38,7 +38,7 @@ __acquires(ahcd->lock) && urb->status == 0) { urb->status = -EREMOTEIO; #ifdef ADMHC_VERBOSE_DEBUG - urb_print(ahcd, urb, "SHORT", usb_pipeout (urb->pipe)); + urb_print(urb, "SHORT", usb_pipeout (urb->pipe)); #endif } spin_unlock(&urb->lock); @@ -53,7 +53,7 @@ __acquires(ahcd->lock) } #ifdef ADMHC_VERBOSE_DEBUG - urb_print(ahcd, urb, "FINISH", 0); + urb_print(urb, "RET", usb_pipeout (urb->pipe)); #endif /* urb->complete() can reenter this HCD */ @@ -67,6 +67,189 @@ __acquires(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; @@ -90,15 +273,13 @@ static struct ed *ed_create(struct admhcd *ahcd, unsigned int type, u32 info) break; } - info |= ED_SKIP; - ed->dummy = td; - ed->state = ED_NEW; + 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 = cpu_to_hc32(ahcd, td->td_dma); + ed->hwHeadP = ed->hwTailP; /* ED_C, ED_H zeroed */ return ed; @@ -114,7 +295,10 @@ err: 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; + struct ed *ed; + unsigned long flags; + + spin_lock_irqsave(&ahcd->lock, flags); ed = ep->hcpriv; if (!ed) { @@ -134,104 +318,33 @@ static struct ed *ed_get(struct admhcd *ahcd, struct usb_host_endpoint *ep, ep->hcpriv = ed; } - return ed; -} - -static void ed_next_urb(struct admhcd *ahcd, struct ed *ed) -{ - struct urb_priv *up; - u32 carry; - - up = list_entry(ed->urb_pending.next, struct urb_priv, pending); - list_del(&up->pending); - - ed->urb_active = up; - ed->state = ED_OPER; - -#ifdef ADMHC_VERBOSE_DEBUG - urb_print(ahcd, up->urb, "NEXT", 0); - admhc_dump_ed(ahcd, " ", ed, 0); -#endif - - up->td[up->td_cnt-1]->hwNextTD = cpu_to_hc32(ahcd, ed->dummy->td_dma); + spin_unlock_irqrestore(&ahcd->lock, flags); - carry = hc32_to_cpup(ahcd, &ed->hwHeadP) & ED_C; - ed->hwHeadP = cpu_to_hc32(ahcd, up->td[0]->td_dma | carry); - ed->hwINFO &= ~cpu_to_hc32(ahcd, ED_SKIP); -} - -/* 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; - - if (ed->state == ED_NEW) { - ed->state = ED_IDLE; - - 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; - ed->hwINFO &= ~cpu_to_hc32(ahcd, ED_SKIP); - } - -#ifdef ADMHC_VERBOSE_DEBUG - admhc_dump_ed(ahcd, "ED-SCHED", ed, 0); -#endif - - if (!ed->urb_active) { - ed_next_urb(ahcd, ed); - admhc_dma_enable(ahcd); - } - - return 0; + return ed; } -static void ed_deschedule(struct admhcd *ahcd, struct ed *ed) -{ - -#ifdef ADMHC_VERBOSE_DEBUG - admhc_dump_ed(ahcd, "ED-DESCHED", ed, 0); -#endif - - /* remove this ED from the HC list */ - ed->ed_prev->hwNextED = ed->hwNextED; - - /* and remove it from our list */ - ed->ed_prev->ed_next = ed->ed_next; - - if (ed->ed_next) { - ed->ed_next->ed_prev = ed->ed_prev; - ed->ed_next = NULL; - } - - if (ahcd->ed_tails[ed->type] == ed) - ahcd->ed_tails[ed->type] = ed->ed_prev; - - ed->state = ED_NEW; -} +/*-------------------------------------------------------------------------*/ -static void ed_start_deschedule(struct admhcd *ahcd, struct ed *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); -#ifdef ADMHC_VERBOSE_DEBUG - admhc_dump_ed(ahcd, "ED-UNLINK", ed, 0); -#endif + /* add this ED into the remove list */ + ed->ed_rm_next = ahcd->ed_rm_list; + ahcd->ed_rm_list = ed; - ed->hwINFO |= cpu_to_hc32(ahcd, ED_SKIP); - ed->state = ED_UNLINK; + /* 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 @@ -239,34 +352,47 @@ static void ed_start_deschedule(struct admhcd *ahcd, struct ed *ed) * SOF is triggered. */ ed->tick = admhc_frame_no(ahcd) + 1; - - admhc_intr_enable(ahcd, ADMHC_INTR_SOFI); } /*-------------------------------------------------------------------------* * TD handling functions *-------------------------------------------------------------------------*/ -static void td_fill(struct admhcd *ahcd, u32 info, dma_addr_t data, int len, - struct urb_priv *up) +/* 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; - u32 cbl = 0; + 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 - if (up->td_idx >= up->td_cnt) { - admhc_err(ahcd, "td_fill error, idx=%d, cnt=%d\n", up->td_idx, - up->td_cnt); - BUG(); - } + /* use this td as the next dummy */ + td_pt = urb_priv->td[index]; - td = up->td[up->td_idx]; + /* 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 (up->td_idx == up->td_cnt-1) - cbl |= TD_IE; - if (data) cbl |= (len & TD_BL_MASK); @@ -276,11 +402,19 @@ static void td_fill(struct admhcd *ahcd, u32 info, dma_addr_t data, int len, 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); - if (up->td_idx > 0) - up->td[up->td_idx-1]->hwNextTD = cpu_to_hc32(ahcd, td->td_dma); + /* 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; - up->td_idx++; + /* HC might read the TD (or cachelines) right away ... */ + wmb(); + td->ed->hwTailP = td->hwNextTD; } /*-------------------------------------------------------------------------*/ @@ -298,7 +432,9 @@ static void td_submit_urb(struct admhcd *ahcd, struct urb *urb) 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 @@ -314,6 +450,7 @@ static void td_submit_urb(struct admhcd *ahcd, struct urb *urb) } urb_priv->td_idx = 0; + list_add(&urb_priv->pending, &ahcd->pending); if (data_len) data = urb->transfer_dma; @@ -334,7 +471,7 @@ static void td_submit_urb(struct admhcd *ahcd, struct urb *urb) info |= (urb->start_frame & TD_FN_MASK); info |= (urb->interval & TD_ISI_MASK) << TD_ISI_SHIFT; - td_fill(ahcd, info, data, data_len, urb_priv); + td_fill(ahcd, info, data, data_len, urb, cnt); cnt++; admhcd_to_hcd(ahcd)->self.bandwidth_int_reqs++; @@ -348,20 +485,20 @@ static void td_submit_urb(struct admhcd *ahcd, struct urb *urb) /* 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_priv); + 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_priv); + 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_priv); + 0, 0, urb, cnt); cnt++; } break; @@ -372,24 +509,21 @@ static void td_submit_urb(struct admhcd *ahcd, struct urb *urb) 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_priv); - cnt++; + 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_priv); - cnt++; + 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_priv); - cnt++; + td_fill(ahcd, info, data, 0, urb, cnt++); break; @@ -406,8 +540,7 @@ static void td_submit_urb(struct admhcd *ahcd, struct urb *urb) frame &= TD_FN_MASK; td_fill(ahcd, info | frame, data + urb->iso_frame_desc[cnt].offset, - urb->iso_frame_desc[cnt].length, - urb_priv); + urb->iso_frame_desc[cnt].length, urb, cnt); } admhcd_to_hcd(ahcd)->self.bandwidth_isoc_reqs++; break; @@ -415,18 +548,19 @@ static void td_submit_urb(struct admhcd *ahcd, struct urb *urb) if (urb_priv->td_cnt != cnt) admhc_err(ahcd, "bad number of tds created for urb %p\n", urb); - - urb_priv->td_idx = 0; } +/*-------------------------------------------------------------------------* + * Done List handling functions + *-------------------------------------------------------------------------*/ + /* calculate transfer length/status and update the urb * PRECONDITION: irqsafe (only for urb->status locking) */ static int td_done(struct admhcd *ahcd, struct urb *urb, struct td *td) { + struct urb_priv *urb_priv = urb->hcpriv; u32 info = hc32_to_cpup(ahcd, &td->hwINFO); - u32 dbp = hc32_to_cpup(ahcd, &td->hwDBP); - u32 cbl = TD_BL_GET(hc32_to_cpup(ahcd, &td->hwCBL)); int type = usb_pipetype(urb->pipe); int cc; @@ -447,17 +581,16 @@ static int td_done(struct admhcd *ahcd, struct urb *urb, struct td *td) return; if (usb_pipeout (urb->pipe)) - dlen = urb->iso_frame_desc[td->index].length; + 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]; + 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, @@ -469,144 +602,354 @@ static int td_done(struct admhcd *ahcd, struct urb *urb, struct td *td) * might not be reported as errors. */ } else { - -#ifdef ADMHC_VERBOSE_DEBUG - admhc_dump_td(ahcd, "td_done", td); -#endif + u32 bl = TD_BL_GET(hc32_to_cpup(ahcd, &td->hwCBL)); + u32 tdDBP = hc32_to_cpup(ahcd, &td->hwDBP); + + /* 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) { + 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) && dbp != 0) { - urb->actual_length += dbp - td->data_dma + cbl; + 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); + urb_priv->td_idx++; + return cc; } /*-------------------------------------------------------------------------*/ -static void ed_update(struct admhcd *ahcd, struct ed *ed, int force) +static inline struct td * +ed_halted(struct admhcd *ahcd, struct td *td, int cc, struct td *rev) { - struct urb_priv *up; - struct urb *urb; - int cc; + 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); - up = ed->urb_active; - if (!up) - return; + /* 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; - urb = up->urb; + next = list_entry(tmp, struct td, td_list); + tmp = next->td_list.next; -#ifdef ADMHC_VERBOSE_DEBUG - urb_print(ahcd, urb, "UPDATE", 0); - admhc_dump_ed(ahcd, "ED-UPDATE", ed, 1); + 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); #endif + info &= ~cpu_to_hc32 (ahcd, TD_CC); + next->hwINFO = info; - cc = TD_CC_NOERROR; - for (; up->td_idx < up->td_cnt; up->td_idx++) { - struct td *td = up->td[up->td_idx]; + next->next_dl_td = rev; + rev = next; - if (hc32_to_cpup(ahcd, &td->hwINFO) & TD_OWN) + 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]); + } - cc = td_done(ahcd, urb, td); - if (cc != TD_CC_NOERROR) { - 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); + return rev; +} - up->td_idx = up->td_cnt; - break; +/*-------------------------------------------------------------------------*/ + +/* 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; + } } - } - if ((up->td_idx != up->td_cnt) && (!force)) - /* the URB is not completed yet */ - return; + /* 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; - /* 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; + /* patch pointer hc uses */ + savebits = *prev & ~cpu_to_hc32(ahcd, TD_MASK); + *prev = td->hwNextTD | savebits; - if (cc != TD_CC_NOERROR && cc < TD_CC_HCD0) { - spin_lock(&urb->lock); - if (urb->status == -EINPROGRESS) - urb->status = cc_to_error[cc]; - spin_unlock(&urb->lock); - } + /* HC may have partly processed this TD */ + urb_print(urb, "PARTIAL", 1); + td_done(ahcd, urb, td); - finish_urb(ahcd, urb); + /* 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->urb_active = NULL; - ed->state = ED_IDLE; + /* 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; + } } -/* there are some tds completed; called in_irq(), with HCD locked */ -static void admhc_td_complete(struct admhcd *ahcd) +/*-------------------------------------------------------------------------*/ + +/* + * 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_unhalt(struct admhcd *ahcd, struct ed *ed, struct urb *urb) { - struct ed *ed; - int more = 0; + struct list_head *entry,*tmp; + struct urb_priv *urb_priv = urb->hcpriv; + __hc32 toggle = ed->hwHeadP & cpu_to_hc32 (ahcd, ED_C); - for (ed = ahcd->ed_head; ed; ed = ed->ed_next) { - if (ed->state != ED_OPER) - continue; - if (hc32_to_cpup(ahcd, &ed->hwHeadP) & ED_H) { - admhc_dump_ed(ahcd, "ed halted", ed, 1); - ed_update(ahcd, ed, 1); - ed->hwHeadP &= ~cpu_to_hc32(ahcd, ED_H); - } else - ed_update(ahcd, ed, 0); +#ifdef ADMHC_VERBOSE_DEBUG + admhc_dump_ed(ahcd, "UNHALT", ed, 0); +#endif + /* 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); - if (ed->urb_active) { - more = 1; - continue; - } + list_for_each_safe(entry, tmp, &ed->td_list) { + struct td *td = list_entry(entry, struct td, td_list); + __hc32 info; - if (!(list_empty(&ed->urb_pending))) { - more = 1; - ed_next_urb(ahcd, ed); - continue; - } + if (td->urb != urb) + break; - ed_start_deschedule(ahcd, ed); + info = td->hwINFO; + info &= ~cpu_to_hc32(ahcd, TD_CC | TD_OWN); + td->hwINFO = info; + + ed->hwHeadP = td->hwNextTD | toggle; + wmb(); } - if (!more) - admhc_dma_disable(ahcd); +} +static inline int is_ed_halted(struct admhcd *ahcd, struct ed *ed) +{ + return ((hc32_to_cpup(ahcd, &ed->hwHeadP) & ED_H) == ED_H); } -/* there are some urbs/eds to unlink; called in_irq(), with HCD locked */ -static void admhc_finish_unlinks(struct admhcd *ahcd, u16 tick) +static inline int is_td_halted(struct admhcd *ahcd, struct ed *ed, + struct td *td) { - struct ed *ed; - int more = 0; + return ((hc32_to_cpup(ahcd, &ed->hwHeadP) & TD_MASK) == + (hc32_to_cpup(ahcd, &td->hwNextTD) & TD_MASK)); +} - for (ed = ahcd->ed_head; ed; ed = ed->ed_next) { - if (ed->state != ED_UNLINK) - continue; +static void ed_update(struct admhcd *ahcd, struct ed *ed) +{ + struct list_head *entry,*tmp; - if (likely(HC_IS_RUNNING(admhcd_to_hcd(ahcd)->state))) - if (tick_before(tick, ed->tick)) { - more = 1; - continue; - } +#ifdef ADMHC_VERBOSE_DEBUG + admhc_dump_ed(ahcd, "UPDATE", ed, 0); +#endif - /* process partial status */ - if (ed->urb_active) - ed_update(ahcd, 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; + int cc; + + if (hc32_to_cpup(ahcd, &td->hwINFO) & TD_OWN) + break; + + /* update URB's length and status from TD */ + cc = td_done(ahcd, urb, td); + if (is_ed_halted(ahcd, ed) && is_td_halted(ahcd, ed, td)) + ed_unhalt(ahcd, ed, urb); + + /* 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 + } - if (list_empty(&ed->urb_pending)) - ed_deschedule(ahcd, ed); - else - ed_schedule(ahcd, ed); } +} - if (!more) - if (likely(HC_IS_RUNNING(admhcd_to_hcd(ahcd)->state))) - admhc_intr_disable(ahcd, ADMHC_INTR_SOFI); +/* 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; + + ed_update(ahcd, ed); + } } diff --git a/target/linux/adm5120/files/drivers/usb/host/adm5120.h b/target/linux/adm5120/files/drivers/usb/host/adm5120.h index 7274078..bf84c00 100644 --- a/target/linux/adm5120/files/drivers/usb/host/adm5120.h +++ b/target/linux/adm5120/files/drivers/usb/host/adm5120.h @@ -56,24 +56,21 @@ struct ed { dma_addr_t dma; /* addr of ED */ struct td *dummy; /* next TD to activate */ - struct urb_priv *urb_active; /* active URB */ - struct list_head urb_pending; /* pending URBs */ - - struct list_head ed_list; /* list of all EDs*/ - struct list_head rm_list; /* for remove list */ + struct list_head urb_list; /* list of our URBs */ /* 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 list_head td_list; /* "shadow list" of our TDs */ /* create --> IDLE --> OPER --> ... --> IDLE --> destroy * usually: OPER --> UNLINK --> (IDLE | OPER) --> ... */ - u8 state; -#define ED_NEW 0x00 /* just allocated */ -#define ED_IDLE 0x01 /* linked into HC, but not running */ -#define ED_OPER 0x02 /* linked into HC and running */ -#define ED_UNLINK 0x03 /* being unlinked from HC */ + 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,...} */ @@ -121,10 +118,10 @@ struct td { #define TD_DP_SHIFT 21 /* direction/pid */ #define TD_DP_MASK 0x3 #define TD_DP (TD_DP_MASK << TD_DP_SHIFT) +#define TD_DP_GET (((x) >> TD_DP_SHIFT) & TD_DP_MASK) #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_DP_GET(x) (((x) >> TD_DP_SHIFT) & TD_DP_MASK) #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) @@ -142,11 +139,19 @@ struct td { /* 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 */ /* @@ -348,7 +353,6 @@ struct admhcd_regs { /* hcd-private per-urb state */ struct urb_priv { struct ed *ed; - struct urb *urb; struct list_head pending; /* URBs on the same ED */ u32 td_cnt; /* # tds in this request */ @@ -379,10 +383,13 @@ struct admhcd { * 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 *periodic[NUM_INTS]; /* shadow int_table */ + struct ed *ed_rm_list; /* to be removed */ + + struct ed *periodic[NUM_INTS]; /* shadow int_table */ #if 0 /* TODO: remove? */ /* @@ -398,6 +405,7 @@ struct admhcd { struct dma_pool *td_cache; struct dma_pool *ed_cache; struct td *td_hash[TD_HASH_SIZE]; + struct list_head pending; /* * driver state @@ -549,6 +557,15 @@ static inline void admhc_writel(const struct admhcd *ahcd, #endif } +static inline void admhc_writel_flush(const struct admhcd *ahcd) +{ +#if 0 + /* TODO: remove? */ + (void) admhc_readl(ahcd, &ahcd->regs->gencontrol); +#endif +} + + /*-------------------------------------------------------------------------*/ /* cpu to ahcd */ @@ -635,18 +652,27 @@ 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) - 1200)) / 7)) -#define FIT ADMHC_SFI_FIT -#define LSTHRESH 0x628 /* lowspeed bit threshold */ +#define FI 0x2edf /* 12000 bits per frame (-1) */ +#define FSLDP(fi) (0x7fff & ((6 * ((fi) - 1200)) / 7)) +#define FIT ADMHC_SFI_FIT +#define LSTHRESH 0x628 /* lowspeed bit threshold */ static inline void periodic_reinit(struct admhcd *ahcd) { +#if 0 + 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); +#else u32 fit = admhc_readl(ahcd, &ahcd->regs->fminterval) & FIT; /* TODO: adjust FSLargestDataPacket value too? */ admhc_writel(ahcd, (fit ^ FIT) | ahcd->fminterval, &ahcd->regs->fminterval); +#endif } static inline u32 admhc_read_rhdesc(struct admhcd *ahcd) |