diff options
Diffstat (limited to 'target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-hcd.c')
| -rw-r--r-- | target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-hcd.c | 843 |
1 files changed, 0 insertions, 843 deletions
diff --git a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-hcd.c b/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-hcd.c deleted file mode 100644 index f721ec1ff8..0000000000 --- a/target/linux/adm5120/files-3.8/drivers/usb/host/adm5120-hcd.c +++ /dev/null @@ -1,843 +0,0 @@ -/* - * ADM5120 HCD (Host Controller Driver) for USB - * - * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> - * - * This file was derived from: drivers/usb/host/ohci-hcd.c - * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> - * (C) Copyright 2000-2004 David Brownell <dbrownell@users.sourceforge.net> - * - * [ Initialisation is based on Linus' ] - * [ uhci code and gregs ahcd fragments ] - * [ (C) Copyright 1999 Linus Torvalds ] - * [ (C) Copyright 1999 Gregory P. Smith] - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/delay.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/usb/otg.h> -#include <linux/usb/hcd.h> -#include <linux/dma-mapping.h> -#include <linux/dmapool.h> -#include <linux/debugfs.h> -#include <linux/io.h> - -#include <asm/irq.h> -#include <asm/unaligned.h> -#include <asm/byteorder.h> - -#define DRIVER_VERSION "0.27.0" -#define DRIVER_AUTHOR "Gabor Juhos <juhosg@openwrt.org>" -#define DRIVER_DESC "ADMtek USB 1.1 Host Controller Driver" - -/*-------------------------------------------------------------------------*/ - -#undef ADMHC_VERBOSE_DEBUG /* not always helpful */ - -/* For initializing controller (mask in an HCFS mode too) */ -#define OHCI_CONTROL_INIT OHCI_CTRL_CBSR - -#define ADMHC_INTR_INIT \ - (ADMHC_INTR_MIE | ADMHC_INTR_INSM | ADMHC_INTR_FATI \ - | ADMHC_INTR_RESI | ADMHC_INTR_TDC | ADMHC_INTR_BABI) - -/*-------------------------------------------------------------------------*/ - -static const char hcd_name[] = "admhc-hcd"; - -#define STATECHANGE_DELAY msecs_to_jiffies(300) - -#include "adm5120.h" - -static void admhc_dump(struct admhcd *ahcd, int verbose); -static int admhc_init(struct admhcd *ahcd); -static void admhc_stop(struct usb_hcd *hcd); - -#include "adm5120-dbg.c" -#include "adm5120-mem.c" -#include "adm5120-pm.c" -#include "adm5120-hub.c" -#include "adm5120-q.c" - -/*-------------------------------------------------------------------------*/ - -/* - * queue up an urb for anything except the root hub - */ -static int admhc_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, - gfp_t mem_flags) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - struct ed *ed; - struct urb_priv *urb_priv; - unsigned int pipe = urb->pipe; - int td_cnt = 0; - unsigned long flags; - int ret = 0; - -#ifdef ADMHC_VERBOSE_DEBUG - spin_lock_irqsave(&ahcd->lock, flags); - urb_print(ahcd, urb, "ENQEUE", usb_pipein(pipe), -EINPROGRESS); - spin_unlock_irqrestore(&ahcd->lock, flags); -#endif - - /* every endpoint has an ed, locate and maybe (re)initialize it */ - ed = ed_get(ahcd, urb->ep, urb->dev, pipe, urb->interval); - if (!ed) - return -ENOMEM; - - /* for the private part of the URB we need the number of TDs */ - switch (ed->type) { - case PIPE_CONTROL: - 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: - /* one TD for every 4096 Bytes (can be up to 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: - /* number of packets from URB */ - td_cnt = urb->number_of_packets; - break; - } - - 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 (!HCD_HW_ACCESSIBLE(hcd)) { - ret = -ENODEV; - goto fail; - } - if (!HC_IS_RUNNING(hcd->state)) { - ret = -ENODEV; - goto fail; - } - - ret = usb_hcd_link_urb_to_ep(hcd, urb); - if (ret) - goto fail; - - /* schedule the ed if needed */ - if (ed->state == ED_IDLE) { - ret = ed_schedule(ahcd, ed); - if (ret < 0) { - usb_hcd_unlink_urb_from_ep(hcd, urb); - goto fail; - } - 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. - */ - } - } 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 ADMHC_VERBOSE_DEBUG - admhc_dump_ed(ahcd, "admhc_urb_enqueue", urb_priv->ed, 1); -#endif - -fail: - if (ret) - urb_priv_free(ahcd, urb_priv); - - spin_unlock_irqrestore(&ahcd->lock, flags); - return ret; -} - -/* - * decouple the URB from the HC queues (TDs, urb_priv); - * 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, - int status) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - unsigned long flags; - int ret; - - spin_lock_irqsave(&ahcd->lock, flags); - -#ifdef ADMHC_VERBOSE_DEBUG - urb_print(ahcd, urb, "DEQUEUE", 1, status); -#endif - ret = usb_hcd_check_unlink_urb(hcd, urb, status); - if (ret) { - /* Do nothing */ - ; - } else 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, status); - } - spin_unlock_irqrestore(&ahcd->lock, flags); - - return ret; -} - -/*-------------------------------------------------------------------------*/ - -/* 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); - 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 - -rescan: - spin_lock_irqsave(&ahcd->lock, flags); - - if (!HC_IS_RUNNING(hcd->state)) { -sanitize: - ed->state = ED_IDLE; - finish_unlinks(ahcd, 0); - } - - 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; - } - /* 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; - } - - ep->hcpriv = NULL; - - spin_unlock_irqrestore(&ahcd->lock, flags); -} - -static int admhc_get_frame_number(struct usb_hcd *hcd) -{ - struct admhcd *ahcd = hcd_to_admhcd(hcd); - - return admhc_frame_no(ahcd); -} - -static void admhc_usb_reset(struct admhcd *ahcd) -{ -#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 -} - -/* 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; - - 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); -} - -/*-------------------------------------------------------------------------* - * 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; - } - - if (ahcd->ed_tails[PIPE_ISOCHRONOUS]) { - ed_free(ahcd, ahcd->ed_tails[PIPE_ISOCHRONOUS]); - ahcd->ed_tails[PIPE_ISOCHRONOUS] = NULL; - } - - if (ahcd->ed_tails[PIPE_CONTROL]) { - ed_free(ahcd, ahcd->ed_tails[PIPE_CONTROL]); - ahcd->ed_tails[PIPE_CONTROL] = NULL; - } - - if (ahcd->ed_tails[PIPE_BULK]) { - ed_free(ahcd, ahcd->ed_tails[PIPE_BULK]); - ahcd->ed_tails[PIPE_BULK] = NULL; - } - - ahcd->ed_head = NULL; -} - -#define ED_DUMMY_INFO (ED_SPEED_FULL | ED_SKIP) - -static int admhc_eds_init(struct admhcd *ahcd) -{ - struct ed *ed; - - ed = ed_create(ahcd, PIPE_INTERRUPT, ED_DUMMY_INFO); - if (!ed) - goto err; - - ahcd->ed_tails[PIPE_INTERRUPT] = ed; - - ed = ed_create(ahcd, PIPE_ISOCHRONOUS, ED_DUMMY_INFO); - if (!ed) - goto err; - - 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); - - ed = ed_create(ahcd, PIPE_CONTROL, ED_DUMMY_INFO); - if (!ed) - goto err; - - 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); - - ed = ed_create(ahcd, PIPE_BULK, ED_DUMMY_INFO); - if (!ed) - goto err; - - 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; -} - -/* init memory, and kick BIOS/SMM off */ - -static int admhc_init(struct admhcd *ahcd) -{ - struct usb_hcd *hcd = admhcd_to_hcd(ahcd); - int ret; - - admhc_disable(ahcd); - ahcd->regs = hcd->regs; - - /* Disable HC interrupts */ - admhc_intr_disable(ahcd, ADMHC_INTR_MIE); - - /* Read the number of ports unless overridden */ - if (ahcd->num_ports == 0) - ahcd->num_ports = admhc_read_rhdesc(ahcd) & ADMHC_RH_NUMP; - - 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; -} - -/*-------------------------------------------------------------------------*/ - -/* Start an OHCI controller, set the BUS operational - * resets USB and controller - * enable interrupts - */ -static int admhc_run(struct admhcd *ahcd) -{ - u32 val; - 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) { - val = admhc_readl(ahcd, &ahcd->regs->fminterval); - ahcd->fminterval = val & 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 */ - } - -#if 0 /* TODO: not applicable */ - /* Reset USB nearly "by the book". RemoteWakeupConnected has - * to be checked in case boot firmware (BIOS/SMM/...) has set up - * wakeup in a way the bus isn't aware of (e.g., legacy PCI PM). - * If the bus glue detected wakeup capability then it should - * already be enabled; if so we'll just enable it again. - */ - if ((ahcd->hc_control & OHCI_CTRL_RWC) != 0) - device_set_wakeup_capable(hcd->self.controller, 1); -#endif - - switch (ahcd->host_control & ADMHC_HC_BUSS) { - case ADMHC_BUSS_OPER: - val = 0; - break; - case ADMHC_BUSS_SUSPEND: - /* FALLTHROUGH ? */ - case ADMHC_BUSS_RESUME: - ahcd->host_control = ADMHC_BUSS_RESUME; - val = 10 /* msec wait */; - break; - /* case ADMHC_BUSS_RESET: */ - default: - ahcd->host_control = ADMHC_BUSS_RESET; - val = 50 /* msec wait */; - break; - } - admhc_writel(ahcd, ahcd->host_control, &ahcd->regs->host_control); - - /* flush the writes */ - admhc_writel_flush(ahcd); - - msleep(val); - val = admhc_read_rhdesc(ahcd); - if (!(val & ADMHC_RH_NPS)) { - /* power down each port */ - for (val = 0; val < ahcd->num_ports; val++) - admhc_write_portstatus(ahcd, val, ADMHC_PS_CPP); - } - /* flush those writes */ - admhc_writel_flush(ahcd); - - /* 2msec timelimit here means no irqs/preempt */ - spin_lock_irq(&ahcd->lock); - - admhc_writel(ahcd, ADMHC_CTRL_SR, &ahcd->regs->gencontrol); - val = 30; /* ... allow extra time */ - while ((admhc_readl(ahcd, &ahcd->regs->gencontrol) & ADMHC_CTRL_SR) != 0) { - if (--val == 0) { - spin_unlock_irq(&ahcd->lock); - admhc_err(ahcd, "USB HC reset timed out!\n"); - return -1; - } - udelay(1); - } - - /* enable HOST mode, before access any host specific register */ - admhc_writel(ahcd, ADMHC_CTRL_UHFE, &ahcd->regs->gencontrol); - - /* Tell the controller where the descriptor list is */ - admhc_writel(ahcd, (u32)ahcd->ed_head->dma, &ahcd->regs->hosthead); - - periodic_reinit(ahcd); - - /* use rhsc irqs after khubd is fully initialized */ - set_bit(HCD_FLAG_POLL_RH, &hcd->flags); - 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); - - val = 20; - while ((admhc_readl(ahcd, &ahcd->regs->host_control) - & ADMHC_HC_BUSS) != ADMHC_BUSS_OPER) { - if (--val == 0) { - spin_unlock_irq(&ahcd->lock); - admhc_err(ahcd, "unable to setup operational mode!\n"); - return -1; - } - mdelay(1); - } - - hcd->state = HC_STATE_RUNNING; - - ahcd->next_statechange = jiffies + STATECHANGE_DELAY; - -#if 0 - /* FIXME: enabling DMA is always failed here for an unknown reason */ - admhc_dma_enable(ahcd); - - val = 200; - while ((admhc_readl(ahcd, &ahcd->regs->host_control) - & ADMHC_HC_DMAE) != ADMHC_HC_DMAE) { - if (--val == 0) { - spin_unlock_irq(&ahcd->lock); - admhc_err(ahcd, "unable to enable DMA!\n"); - admhc_dump(ahcd, 1); - return -1; - } - mdelay(1); - } - -#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; - } - - 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); - } - - 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"); - } - - 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); - set_bit(HCD_FLAG_POLL_RH, &hcd->flags); - if (ahcd->autostop) { - spin_lock(&ahcd->lock); - admhc_rh_resume(ahcd); - spin_unlock(&ahcd->lock); - } else - usb_hcd_resume_root_hub(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); - admhc_td_complete(ahcd); - spin_unlock(&ahcd->lock); - if (HC_IS_RUNNING(hcd->state)) - admhc_intr_enable(ahcd, ADMHC_INTR_TDC); - } - - if (ints & ADMHC_INTR_SO) { - /* could track INTR_SO to reduce available PCI/... bandwidth */ - 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 */ - 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; -} - -/*-------------------------------------------------------------------------*/ - -static void admhc_stop(struct usb_hcd *hcd) -{ - 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); -} - -/*-------------------------------------------------------------------------*/ - -#ifdef CONFIG_ADM5120 -#include "adm5120-drv.c" -#define PLATFORM_DRIVER usb_hcd_adm5120_driver -#endif - -#if !defined(PLATFORM_DRIVER) -#error "missing bus glue for admhc-hcd" -#endif - -#define DRIVER_INFO DRIVER_DESC " version " DRIVER_VERSION - -static int __init admhc_hcd_mod_init(void) -{ - int ret = 0; - - if (usb_disabled()) - 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)); - set_bit(USB_OHCI_LOADED, &usb_hcds_loaded); - -#ifdef DEBUG - admhc_debug_root = debugfs_create_dir("admhc", usb_debug_root); - if (!admhc_debug_root) { - ret = -ENOENT; - goto error_debug; - } -#endif - -#ifdef PLATFORM_DRIVER - ret = platform_driver_register(&PLATFORM_DRIVER); - if (ret < 0) - goto error_platform; -#endif - - return ret; - -#ifdef PLATFORM_DRIVER - platform_driver_unregister(&PLATFORM_DRIVER); -error_platform: -#endif - -#ifdef DEBUG - debugfs_remove(admhc_debug_root); - admhc_debug_root = NULL; -error_debug: -#endif - clear_bit(USB_OHCI_LOADED, &usb_hcds_loaded); - return ret; -} -module_init(admhc_hcd_mod_init); - -static void __exit admhc_hcd_mod_exit(void) -{ - platform_driver_unregister(&PLATFORM_DRIVER); -#ifdef DEBUG - debugfs_remove(admhc_debug_root); -#endif - clear_bit(USB_OHCI_LOADED, &usb_hcds_loaded); -} -module_exit(admhc_hcd_mod_exit); - -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_INFO); -MODULE_VERSION(DRIVER_VERSION); -MODULE_LICENSE("GPL v2"); |