patch-2.4.21 linux-2.4.21/drivers/usb/usb-ohci.c
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- Lines: 2937
- Date:
1969-12-31 16:00:00.000000000 -0800
- Orig file:
linux-2.4.20/drivers/usb/usb-ohci.c
- Orig date:
2002-11-28 15:53:15.000000000 -0800
diff -urN linux-2.4.20/drivers/usb/usb-ohci.c linux-2.4.21/drivers/usb/usb-ohci.c
@@ -1,2936 +0,0 @@
-/*
- * URB OHCI HCD (Host Controller Driver) for USB.
- *
- * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
- * (C) Copyright 2000-2001 David Brownell <dbrownell@users.sourceforge.net>
- *
- * [ Initialisation is based on Linus' ]
- * [ uhci code and gregs ohci fragments ]
- * [ (C) Copyright 1999 Linus Torvalds ]
- * [ (C) Copyright 1999 Gregory P. Smith]
- *
- *
- * History:
- *
- * 2002/03/08 interrupt unlink fix (Matt Hughes), better cleanup on
- * load failure (Matthew Frederickson)
- * 2002/01/20 async unlink fixes: return -EINPROGRESS (per spec) and
- * make interrupt unlink-in-completion work (db)
- * 2001/09/19 USB_ZERO_PACKET support (Jean Tourrilhes)
- * 2001/07/17 power management and pmac cleanup (Benjamin Herrenschmidt)
- * 2001/03/24 td/ed hashing to remove bus_to_virt (Steve Longerbeam);
- pci_map_single (db)
- * 2001/03/21 td and dev/ed allocation uses new pci_pool API (db)
- * 2001/03/07 hcca allocation uses pci_alloc_consistent (Steve Longerbeam)
- *
- * 2000/09/26 fixed races in removing the private portion of the urb
- * 2000/09/07 disable bulk and control lists when unlinking the last
- * endpoint descriptor in order to avoid unrecoverable errors on
- * the Lucent chips. (rwc@sgi)
- * 2000/08/29 use bandwidth claiming hooks (thanks Randy!), fix some
- * urb unlink probs, indentation fixes
- * 2000/08/11 various oops fixes mostly affecting iso and cleanup from
- * device unplugs.
- * 2000/06/28 use PCI hotplug framework, for better power management
- * and for Cardbus support (David Brownell)
- * 2000/earlier: fixes for NEC/Lucent chips; suspend/resume handling
- * when the controller loses power; handle UE; cleanup; ...
- *
- * v5.2 1999/12/07 URB 3rd preview,
- * v5.1 1999/11/30 URB 2nd preview, cpia, (usb-scsi)
- * v5.0 1999/11/22 URB Technical preview, Paul Mackerras powerbook susp/resume
- * i386: HUB, Keyboard, Mouse, Printer
- *
- * v4.3 1999/10/27 multiple HCs, bulk_request
- * v4.2 1999/09/05 ISO API alpha, new dev alloc, neg Error-codes
- * v4.1 1999/08/27 Randy Dunlap's - ISO API first impl.
- * v4.0 1999/08/18
- * v3.0 1999/06/25
- * v2.1 1999/05/09 code clean up
- * v2.0 1999/05/04
- * v1.0 1999/04/27 initial release
- */
-
-#include <linux/config.h>
-#include <linux/module.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/smp_lock.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/timer.h>
-#include <linux/list.h>
-#include <linux/interrupt.h> /* for in_interrupt() */
-#undef DEBUG
-#include <linux/usb.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/system.h>
-#include <asm/unaligned.h>
-
-#define OHCI_USE_NPS // force NoPowerSwitching mode
-// #define OHCI_VERBOSE_DEBUG /* not always helpful */
-
-#include "usb-ohci.h"
-
-#include "hcd.h"
-
-#ifdef CONFIG_PMAC_PBOOK
-#include <asm/machdep.h>
-#include <asm/pmac_feature.h>
-#include <asm/pci-bridge.h>
-#ifndef CONFIG_PM
-#define CONFIG_PM
-#endif
-#endif
-
-
-/*
- * Version Information
- */
-#define DRIVER_VERSION "v5.3"
-#define DRIVER_AUTHOR "Roman Weissgaerber <weissg@vienna.at>, David Brownell"
-#define DRIVER_DESC "USB OHCI Host Controller Driver"
-
-/* For initializing controller (mask in an HCFS mode too) */
-#define OHCI_CONTROL_INIT \
- (OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE
-
-#define OHCI_UNLINK_TIMEOUT (HZ / 10)
-
-static LIST_HEAD (ohci_hcd_list);
-static spinlock_t usb_ed_lock = SPIN_LOCK_UNLOCKED;
-
-
-/*-------------------------------------------------------------------------*/
-
-/* AMD-756 (D2 rev) reports corrupt register contents in some cases.
- * The erratum (#4) description is incorrect. AMD's workaround waits
- * till some bits (mostly reserved) are clear; ok for all revs.
- */
-#define read_roothub(hc, register, mask) ({ \
- u32 temp = readl (&hc->regs->roothub.register); \
- if (hc->flags & OHCI_QUIRK_AMD756) \
- while (temp & mask) \
- temp = readl (&hc->regs->roothub.register); \
- temp; })
-
-static u32 roothub_a (struct ohci *hc)
- { return read_roothub (hc, a, 0xfc0fe000); }
-static inline u32 roothub_b (struct ohci *hc)
- { return readl (&hc->regs->roothub.b); }
-static inline u32 roothub_status (struct ohci *hc)
- { return readl (&hc->regs->roothub.status); }
-static u32 roothub_portstatus (struct ohci *hc, int i)
- { return read_roothub (hc, portstatus [i], 0xffe0fce0); }
-
-
-/*-------------------------------------------------------------------------*
- * URB support functions
- *-------------------------------------------------------------------------*/
-
-/* free HCD-private data associated with this URB */
-
-static void urb_free_priv (struct ohci *hc, urb_priv_t * urb_priv)
-{
- int i;
- int last = urb_priv->length - 1;
- int len;
- int dir;
- struct td *td;
-
- if (last >= 0) {
-
- /* ISOC, BULK, INTR data buffer starts at td 0
- * CTRL setup starts at td 0 */
- td = urb_priv->td [0];
-
- len = td->urb->transfer_buffer_length,
- dir = usb_pipeout (td->urb->pipe)
- ? PCI_DMA_TODEVICE
- : PCI_DMA_FROMDEVICE;
-
- /* unmap CTRL URB setup */
- if (usb_pipecontrol (td->urb->pipe)) {
- pci_unmap_single (hc->ohci_dev,
- td->data_dma, 8, PCI_DMA_TODEVICE);
-
- /* CTRL data buffer starts at td 1 if len > 0 */
- if (len && last > 0)
- td = urb_priv->td [1];
- }
-
- /* unmap data buffer */
- if (len && td->data_dma)
- pci_unmap_single (hc->ohci_dev, td->data_dma, len, dir);
-
- for (i = 0; i <= last; i++) {
- td = urb_priv->td [i];
- if (td)
- td_free (hc, td);
- }
- }
-
- kfree (urb_priv);
-}
-
-static void urb_rm_priv_locked (struct urb * urb)
-{
- urb_priv_t * urb_priv = urb->hcpriv;
-
- if (urb_priv) {
- urb->hcpriv = NULL;
-
-#ifdef DO_TIMEOUTS
- if (urb->timeout) {
- list_del (&urb->urb_list);
- urb->timeout -= jiffies;
- }
-#endif
-
- /* Release int/iso bandwidth */
- if (urb->bandwidth) {
- switch (usb_pipetype(urb->pipe)) {
- case PIPE_INTERRUPT:
- usb_release_bandwidth (urb->dev, urb, 0);
- break;
- case PIPE_ISOCHRONOUS:
- usb_release_bandwidth (urb->dev, urb, 1);
- break;
- default:
- break;
- }
- }
-
- urb_free_priv ((struct ohci *)urb->dev->bus->hcpriv, urb_priv);
- usb_dec_dev_use (urb->dev);
- urb->dev = NULL;
- }
-}
-
-static void urb_rm_priv (struct urb * urb)
-{
- unsigned long flags;
-
- spin_lock_irqsave (&usb_ed_lock, flags);
- urb_rm_priv_locked (urb);
- spin_unlock_irqrestore (&usb_ed_lock, flags);
-}
-
-/*-------------------------------------------------------------------------*/
-
-#ifdef DEBUG
-static int sohci_get_current_frame_number (struct usb_device * dev);
-
-/* debug| print the main components of an URB
- * small: 0) header + data packets 1) just header */
-
-static void 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 OHCI_VERBOSE_DEBUG
- if (urb->status != 0)
-#endif
- dbg("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,flags:%4x,len:%d/%d,stat:%d(%x)",
- str,
- sohci_get_current_frame_number (urb->dev),
- usb_pipedevice (pipe),
- usb_pipeendpoint (pipe),
- usb_pipeout (pipe)? 'O': 'I',
- usb_pipetype (pipe) < 2? (usb_pipeint (pipe)? "INTR": "ISOC"):
- (usb_pipecontrol (pipe)? "CTRL": "BULK"),
- urb->transfer_flags,
- urb->actual_length,
- urb->transfer_buffer_length,
- urb->status, urb->status);
-#ifdef OHCI_VERBOSE_DEBUG
- if (!small) {
- int i, len;
-
- if (usb_pipecontrol (pipe)) {
- printk (KERN_DEBUG __FILE__ ": cmd(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
-}
-
-/* just for debugging; prints non-empty branches of the int ed tree inclusive iso eds*/
-void ep_print_int_eds (ohci_t * ohci, char * str) {
- int i, j;
- __u32 * ed_p;
- for (i= 0; i < 32; i++) {
- j = 5;
- ed_p = &(ohci->hcca->int_table [i]);
- if (*ed_p == 0)
- continue;
- printk (KERN_DEBUG __FILE__ ": %s branch int %2d(%2x):", str, i, i);
- while (*ed_p != 0 && j--) {
- ed_t *ed = dma_to_ed (ohci, le32_to_cpup(ed_p));
- printk (" ed: %4x;", ed->hwINFO);
- ed_p = &ed->hwNextED;
- }
- printk ("\n");
- }
-}
-
-
-static void ohci_dump_intr_mask (char *label, __u32 mask)
-{
- dbg ("%s: 0x%08x%s%s%s%s%s%s%s%s%s",
- label,
- mask,
- (mask & OHCI_INTR_MIE) ? " MIE" : "",
- (mask & OHCI_INTR_OC) ? " OC" : "",
- (mask & OHCI_INTR_RHSC) ? " RHSC" : "",
- (mask & OHCI_INTR_FNO) ? " FNO" : "",
- (mask & OHCI_INTR_UE) ? " UE" : "",
- (mask & OHCI_INTR_RD) ? " RD" : "",
- (mask & OHCI_INTR_SF) ? " SF" : "",
- (mask & OHCI_INTR_WDH) ? " WDH" : "",
- (mask & OHCI_INTR_SO) ? " SO" : ""
- );
-}
-
-static void maybe_print_eds (char *label, __u32 value)
-{
- if (value)
- dbg ("%s %08x", label, value);
-}
-
-static char *hcfs2string (int state)
-{
- switch (state) {
- case OHCI_USB_RESET: return "reset";
- case OHCI_USB_RESUME: return "resume";
- case OHCI_USB_OPER: return "operational";
- case OHCI_USB_SUSPEND: return "suspend";
- }
- return "?";
-}
-
-// dump control and status registers
-static void ohci_dump_status (ohci_t *controller)
-{
- struct ohci_regs *regs = controller->regs;
- __u32 temp;
-
- temp = readl (®s->revision) & 0xff;
- if (temp != 0x10)
- dbg ("spec %d.%d", (temp >> 4), (temp & 0x0f));
-
- temp = readl (®s->control);
- dbg ("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp,
- (temp & OHCI_CTRL_RWE) ? " RWE" : "",
- (temp & OHCI_CTRL_RWC) ? " RWC" : "",
- (temp & OHCI_CTRL_IR) ? " IR" : "",
- hcfs2string (temp & OHCI_CTRL_HCFS),
- (temp & OHCI_CTRL_BLE) ? " BLE" : "",
- (temp & OHCI_CTRL_CLE) ? " CLE" : "",
- (temp & OHCI_CTRL_IE) ? " IE" : "",
- (temp & OHCI_CTRL_PLE) ? " PLE" : "",
- temp & OHCI_CTRL_CBSR
- );
-
- temp = readl (®s->cmdstatus);
- dbg ("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp,
- (temp & OHCI_SOC) >> 16,
- (temp & OHCI_OCR) ? " OCR" : "",
- (temp & OHCI_BLF) ? " BLF" : "",
- (temp & OHCI_CLF) ? " CLF" : "",
- (temp & OHCI_HCR) ? " HCR" : ""
- );
-
- ohci_dump_intr_mask ("intrstatus", readl (®s->intrstatus));
- ohci_dump_intr_mask ("intrenable", readl (®s->intrenable));
- // intrdisable always same as intrenable
- // ohci_dump_intr_mask ("intrdisable", readl (®s->intrdisable));
-
- maybe_print_eds ("ed_periodcurrent", readl (®s->ed_periodcurrent));
-
- maybe_print_eds ("ed_controlhead", readl (®s->ed_controlhead));
- maybe_print_eds ("ed_controlcurrent", readl (®s->ed_controlcurrent));
-
- maybe_print_eds ("ed_bulkhead", readl (®s->ed_bulkhead));
- maybe_print_eds ("ed_bulkcurrent", readl (®s->ed_bulkcurrent));
-
- maybe_print_eds ("donehead", readl (®s->donehead));
-}
-
-static void ohci_dump_roothub (ohci_t *controller, int verbose)
-{
- __u32 temp, ndp, i;
-
- temp = roothub_a (controller);
- if (temp == ~(u32)0)
- return;
- ndp = (temp & RH_A_NDP);
-
- if (verbose) {
- dbg ("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp,
- ((temp & RH_A_POTPGT) >> 24) & 0xff,
- (temp & RH_A_NOCP) ? " NOCP" : "",
- (temp & RH_A_OCPM) ? " OCPM" : "",
- (temp & RH_A_DT) ? " DT" : "",
- (temp & RH_A_NPS) ? " NPS" : "",
- (temp & RH_A_PSM) ? " PSM" : "",
- ndp
- );
- temp = roothub_b (controller);
- dbg ("roothub.b: %08x PPCM=%04x DR=%04x",
- temp,
- (temp & RH_B_PPCM) >> 16,
- (temp & RH_B_DR)
- );
- temp = roothub_status (controller);
- dbg ("roothub.status: %08x%s%s%s%s%s%s",
- temp,
- (temp & RH_HS_CRWE) ? " CRWE" : "",
- (temp & RH_HS_OCIC) ? " OCIC" : "",
- (temp & RH_HS_LPSC) ? " LPSC" : "",
- (temp & RH_HS_DRWE) ? " DRWE" : "",
- (temp & RH_HS_OCI) ? " OCI" : "",
- (temp & RH_HS_LPS) ? " LPS" : ""
- );
- }
-
- for (i = 0; i < ndp; i++) {
- temp = roothub_portstatus (controller, i);
- dbg ("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s",
- i,
- temp,
- (temp & RH_PS_PRSC) ? " PRSC" : "",
- (temp & RH_PS_OCIC) ? " OCIC" : "",
- (temp & RH_PS_PSSC) ? " PSSC" : "",
- (temp & RH_PS_PESC) ? " PESC" : "",
- (temp & RH_PS_CSC) ? " CSC" : "",
-
- (temp & RH_PS_LSDA) ? " LSDA" : "",
- (temp & RH_PS_PPS) ? " PPS" : "",
- (temp & RH_PS_PRS) ? " PRS" : "",
- (temp & RH_PS_POCI) ? " POCI" : "",
- (temp & RH_PS_PSS) ? " PSS" : "",
-
- (temp & RH_PS_PES) ? " PES" : "",
- (temp & RH_PS_CCS) ? " CCS" : ""
- );
- }
-}
-
-static void ohci_dump (ohci_t *controller, int verbose)
-{
- dbg ("OHCI controller usb-%s state", controller->ohci_dev->slot_name);
-
- // dumps some of the state we know about
- ohci_dump_status (controller);
- if (verbose)
- ep_print_int_eds (controller, "hcca");
- dbg ("hcca frame #%04x", controller->hcca->frame_no);
- ohci_dump_roothub (controller, 1);
-}
-
-
-#endif
-
-/*-------------------------------------------------------------------------*
- * Interface functions (URB)
- *-------------------------------------------------------------------------*/
-
-/* return a request to the completion handler */
-
-static int sohci_return_urb (struct ohci *hc, struct urb * urb)
-{
- urb_priv_t * urb_priv = urb->hcpriv;
- struct urb * urbt;
- unsigned long flags;
- int i;
-
- if (!urb_priv)
- return -1; /* urb already unlinked */
-
- /* just to be sure */
- if (!urb->complete) {
- urb_rm_priv (urb);
- return -1;
- }
-
-#ifdef DEBUG
- urb_print (urb, "RET", usb_pipeout (urb->pipe));
-#endif
-
- switch (usb_pipetype (urb->pipe)) {
- case PIPE_INTERRUPT:
- pci_unmap_single (hc->ohci_dev,
- urb_priv->td [0]->data_dma,
- urb->transfer_buffer_length,
- usb_pipeout (urb->pipe)
- ? PCI_DMA_TODEVICE
- : PCI_DMA_FROMDEVICE);
- urb->complete (urb);
-
- /* implicitly requeued */
- urb->actual_length = 0;
- urb->status = -EINPROGRESS;
- td_submit_urb (urb);
- break;
-
- case PIPE_ISOCHRONOUS:
- for (urbt = urb->next; urbt && (urbt != urb); urbt = urbt->next);
- if (urbt) { /* send the reply and requeue URB */
- pci_unmap_single (hc->ohci_dev,
- urb_priv->td [0]->data_dma,
- urb->transfer_buffer_length,
- usb_pipeout (urb->pipe)
- ? PCI_DMA_TODEVICE
- : PCI_DMA_FROMDEVICE);
- urb->complete (urb);
- spin_lock_irqsave (&usb_ed_lock, flags);
- urb->actual_length = 0;
- urb->status = USB_ST_URB_PENDING;
- urb->start_frame = urb_priv->ed->last_iso + 1;
- if (urb_priv->state != URB_DEL) {
- for (i = 0; i < urb->number_of_packets; i++) {
- urb->iso_frame_desc[i].actual_length = 0;
- urb->iso_frame_desc[i].status = -EXDEV;
- }
- td_submit_urb (urb);
- }
- spin_unlock_irqrestore (&usb_ed_lock, flags);
-
- } else { /* unlink URB, call complete */
- urb_rm_priv (urb);
- urb->complete (urb);
- }
- break;
-
- case PIPE_BULK:
- case PIPE_CONTROL: /* unlink URB, call complete */
- urb_rm_priv (urb);
- urb->complete (urb);
- break;
- }
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* get a transfer request */
-
-static int sohci_submit_urb (struct urb * urb)
-{
- ohci_t * ohci;
- ed_t * ed;
- urb_priv_t * urb_priv;
- unsigned int pipe = urb->pipe;
- int maxps = usb_maxpacket (urb->dev, pipe, usb_pipeout (pipe));
- int i, size = 0;
- unsigned long flags;
- int bustime = 0;
- int mem_flags = ALLOC_FLAGS;
-
- if (!urb->dev || !urb->dev->bus)
- return -ENODEV;
-
- if (urb->hcpriv) /* urb already in use */
- return -EINVAL;
-
-// if(usb_endpoint_halted (urb->dev, usb_pipeendpoint (pipe), usb_pipeout (pipe)))
-// return -EPIPE;
-
- usb_inc_dev_use (urb->dev);
- ohci = (ohci_t *) urb->dev->bus->hcpriv;
-
-#ifdef DEBUG
- urb_print (urb, "SUB", usb_pipein (pipe));
-#endif
-
- /* handle a request to the virtual root hub */
- if (usb_pipedevice (pipe) == ohci->rh.devnum)
- return rh_submit_urb (urb);
-
- /* when controller's hung, permit only roothub cleanup attempts
- * such as powering down ports */
- if (ohci->disabled) {
- usb_dec_dev_use (urb->dev);
- return -ESHUTDOWN;
- }
-
- /* every endpoint has a ed, locate and fill it */
- if (!(ed = ep_add_ed (urb->dev, pipe, urb->interval, 1, mem_flags))) {
- usb_dec_dev_use (urb->dev);
- return -ENOMEM;
- }
-
- /* for the private part of the URB we need the number of TDs (size) */
- switch (usb_pipetype (pipe)) {
- case PIPE_BULK: /* one TD for every 4096 Byte */
- size = (urb->transfer_buffer_length - 1) / 4096 + 1;
-
- /* If the transfer size is multiple of the pipe mtu,
- * we may need an extra TD to create a empty frame
- * Jean II */
- if ((urb->transfer_flags & USB_ZERO_PACKET) &&
- usb_pipeout (pipe) &&
- (urb->transfer_buffer_length != 0) &&
- ((urb->transfer_buffer_length % maxps) == 0))
- size++;
- break;
- case PIPE_ISOCHRONOUS: /* number of packets from URB */
- size = urb->number_of_packets;
- if (size <= 0) {
- usb_dec_dev_use (urb->dev);
- return -EINVAL;
- }
- for (i = 0; i < urb->number_of_packets; i++) {
- urb->iso_frame_desc[i].actual_length = 0;
- urb->iso_frame_desc[i].status = -EXDEV;
- }
- break;
- case PIPE_CONTROL: /* 1 TD for setup, 1 for ACK and 1 for every 4096 B */
- size = (urb->transfer_buffer_length == 0)? 2:
- (urb->transfer_buffer_length - 1) / 4096 + 3;
- break;
- case PIPE_INTERRUPT: /* one TD */
- size = 1;
- break;
- }
-
- /* allocate the private part of the URB */
- urb_priv = kmalloc (sizeof (urb_priv_t) + size * sizeof (td_t *),
- in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
- if (!urb_priv) {
- usb_dec_dev_use (urb->dev);
- return -ENOMEM;
- }
- memset (urb_priv, 0, sizeof (urb_priv_t) + size * sizeof (td_t *));
-
- /* fill the private part of the URB */
- urb_priv->length = size;
- urb_priv->ed = ed;
-
- /* allocate the TDs (updating hash chains) */
- spin_lock_irqsave (&usb_ed_lock, flags);
- for (i = 0; i < size; i++) {
- urb_priv->td[i] = td_alloc (ohci, SLAB_ATOMIC);
- if (!urb_priv->td[i]) {
- urb_priv->length = i;
- urb_free_priv (ohci, urb_priv);
- spin_unlock_irqrestore (&usb_ed_lock, flags);
- usb_dec_dev_use (urb->dev);
- return -ENOMEM;
- }
- }
-
- if (ed->state == ED_NEW || (ed->state & ED_DEL)) {
- urb_free_priv (ohci, urb_priv);
- spin_unlock_irqrestore (&usb_ed_lock, flags);
- usb_dec_dev_use (urb->dev);
- return -EINVAL;
- }
-
- /* allocate and claim bandwidth if needed; ISO
- * needs start frame index if it was't provided.
- */
- switch (usb_pipetype (pipe)) {
- case PIPE_ISOCHRONOUS:
- if (urb->transfer_flags & USB_ISO_ASAP) {
- urb->start_frame = ((ed->state == ED_OPER)
- ? (ed->last_iso + 1)
- : (le16_to_cpu (ohci->hcca->frame_no) + 10)) & 0xffff;
- }
- /* FALLTHROUGH */
- case PIPE_INTERRUPT:
- if (urb->bandwidth == 0) {
- bustime = usb_check_bandwidth (urb->dev, urb);
- }
- if (bustime < 0) {
- urb_free_priv (ohci, urb_priv);
- spin_unlock_irqrestore (&usb_ed_lock, flags);
- usb_dec_dev_use (urb->dev);
- return bustime;
- }
- usb_claim_bandwidth (urb->dev, urb, bustime, usb_pipeisoc (urb->pipe));
-#ifdef DO_TIMEOUTS
- urb->timeout = 0;
-#endif
- }
-
- urb->actual_length = 0;
- urb->hcpriv = urb_priv;
- urb->status = USB_ST_URB_PENDING;
-
- /* link the ed into a chain if is not already */
- if (ed->state != ED_OPER)
- ep_link (ohci, ed);
-
- /* fill the TDs and link it to the ed */
- td_submit_urb (urb);
-
-#ifdef DO_TIMEOUTS
- /* maybe add to ordered list of timeouts */
- if (urb->timeout) {
- struct list_head *entry;
-
- // FIXME: usb-uhci uses relative timeouts (like this),
- // while uhci uses absolute ones (probably better).
- // Pick one solution and change the affected drivers.
- urb->timeout += jiffies;
-
- list_for_each (entry, &ohci->timeout_list) {
- struct urb *next_urb;
-
- next_urb = list_entry (entry, struct urb, urb_list);
- if (time_after_eq (urb->timeout, next_urb->timeout))
- break;
- }
- list_add (&urb->urb_list, entry);
-
- /* drive timeouts by SF (messy, but works) */
- writel (OHCI_INTR_SF, &ohci->regs->intrenable);
- }
-#endif
-
- spin_unlock_irqrestore (&usb_ed_lock, flags);
-
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* deactivate all TDs and remove the private part of the URB */
-/* interrupt callers must use async unlink mode */
-
-static int sohci_unlink_urb (struct urb * urb)
-{
- unsigned long flags;
- ohci_t * ohci;
-
- if (!urb) /* just to be sure */
- return -EINVAL;
-
- if (!urb->dev || !urb->dev->bus)
- return -ENODEV;
-
- ohci = (ohci_t *) urb->dev->bus->hcpriv;
-
-#ifdef DEBUG
- urb_print (urb, "UNLINK", 1);
-#endif
-
- /* handle a request to the virtual root hub */
- if (usb_pipedevice (urb->pipe) == ohci->rh.devnum)
- return rh_unlink_urb (urb);
-
- if (urb->hcpriv && (urb->status == USB_ST_URB_PENDING)) {
- if (!ohci->disabled) {
- urb_priv_t * urb_priv;
-
- /* interrupt code may not sleep; it must use
- * async status return to unlink pending urbs.
- */
- if (!(urb->transfer_flags & USB_ASYNC_UNLINK)
- && in_interrupt ()) {
- err ("bug in call from %p; use async!",
- __builtin_return_address(0));
- return -EWOULDBLOCK;
- }
-
- /* flag the urb and its TDs for deletion in some
- * upcoming SF interrupt delete list processing
- */
- spin_lock_irqsave (&usb_ed_lock, flags);
- urb_priv = urb->hcpriv;
-
- if (!urb_priv || (urb_priv->state == URB_DEL)) {
- spin_unlock_irqrestore (&usb_ed_lock, flags);
- return 0;
- }
-
- urb_priv->state = URB_DEL;
- ep_rm_ed (urb->dev, urb_priv->ed);
- urb_priv->ed->state |= ED_URB_DEL;
-
- if (!(urb->transfer_flags & USB_ASYNC_UNLINK)) {
- DECLARE_WAIT_QUEUE_HEAD (unlink_wakeup);
- DECLARE_WAITQUEUE (wait, current);
- int timeout = OHCI_UNLINK_TIMEOUT;
-
- add_wait_queue (&unlink_wakeup, &wait);
- urb_priv->wait = &unlink_wakeup;
- spin_unlock_irqrestore (&usb_ed_lock, flags);
-
- /* wait until all TDs are deleted */
- set_current_state(TASK_UNINTERRUPTIBLE);
- while (timeout && (urb->status == USB_ST_URB_PENDING))
- timeout = schedule_timeout (timeout);
- set_current_state(TASK_RUNNING);
- remove_wait_queue (&unlink_wakeup, &wait);
- if (urb->status == USB_ST_URB_PENDING) {
- err ("unlink URB timeout");
- return -ETIMEDOUT;
- }
- } else {
- /* usb_dec_dev_use done in dl_del_list() */
- urb->status = -EINPROGRESS;
- spin_unlock_irqrestore (&usb_ed_lock, flags);
- return -EINPROGRESS;
- }
- } else {
- urb_rm_priv (urb);
- if (urb->transfer_flags & USB_ASYNC_UNLINK) {
- urb->status = -ECONNRESET;
- if (urb->complete)
- urb->complete (urb);
- } else
- urb->status = -ENOENT;
- }
- }
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* allocate private data space for a usb device */
-
-static int sohci_alloc_dev (struct usb_device *usb_dev)
-{
- struct ohci_device * dev;
-
- dev = dev_alloc ((struct ohci *) usb_dev->bus->hcpriv, ALLOC_FLAGS);
- if (!dev)
- return -ENOMEM;
-
- usb_dev->hcpriv = dev;
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* may be called from interrupt context */
-/* frees private data space of usb device */
-
-static int sohci_free_dev (struct usb_device * usb_dev)
-{
- unsigned long flags;
- int i, cnt = 0;
- ed_t * ed;
- struct ohci_device * dev = usb_to_ohci (usb_dev);
- ohci_t * ohci = usb_dev->bus->hcpriv;
-
- if (!dev)
- return 0;
-
- if (usb_dev->devnum >= 0) {
-
- /* driver disconnects should have unlinked all urbs
- * (freeing all the TDs, unlinking EDs) but we need
- * to defend against bugs that prevent that.
- */
- spin_lock_irqsave (&usb_ed_lock, flags);
- for(i = 0; i < NUM_EDS; i++) {
- ed = &(dev->ed[i]);
- if (ed->state != ED_NEW) {
- if (ed->state == ED_OPER) {
- /* driver on that interface didn't unlink an urb */
- dbg ("driver usb-%s dev %d ed 0x%x unfreed URB",
- ohci->ohci_dev->slot_name, usb_dev->devnum, i);
- ep_unlink (ohci, ed);
- }
- ep_rm_ed (usb_dev, ed);
- ed->state = ED_DEL;
- cnt++;
- }
- }
- spin_unlock_irqrestore (&usb_ed_lock, flags);
-
- /* if the controller is running, tds for those unlinked
- * urbs get freed by dl_del_list at the next SF interrupt
- */
- if (cnt > 0) {
-
- if (ohci->disabled) {
- /* FIXME: Something like this should kick in,
- * though it's currently an exotic case ...
- * the controller won't ever be touching
- * these lists again!!
- dl_del_list (ohci,
- le16_to_cpu (ohci->hcca->frame_no) & 1);
- */
- warn ("TD leak, %d", cnt);
-
- } else if (!in_interrupt ()) {
- DECLARE_WAIT_QUEUE_HEAD (freedev_wakeup);
- DECLARE_WAITQUEUE (wait, current);
- int timeout = OHCI_UNLINK_TIMEOUT;
-
- /* SF interrupt handler calls dl_del_list */
- add_wait_queue (&freedev_wakeup, &wait);
- dev->wait = &freedev_wakeup;
- set_current_state(TASK_UNINTERRUPTIBLE);
- while (timeout && dev->ed_cnt)
- timeout = schedule_timeout (timeout);
- set_current_state(TASK_RUNNING);
- remove_wait_queue (&freedev_wakeup, &wait);
- if (dev->ed_cnt) {
- err ("free device %d timeout", usb_dev->devnum);
- return -ETIMEDOUT;
- }
- } else {
- /* likely some interface's driver has a refcount bug */
- err ("bus %s devnum %d deletion in interrupt",
- ohci->ohci_dev->slot_name, usb_dev->devnum);
- BUG ();
- }
- }
- }
-
- /* free device, and associated EDs */
- dev_free (ohci, dev);
-
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* tell us the current USB frame number */
-
-static int sohci_get_current_frame_number (struct usb_device *usb_dev)
-{
- ohci_t * ohci = usb_dev->bus->hcpriv;
-
- return le16_to_cpu (ohci->hcca->frame_no);
-}
-
-/*-------------------------------------------------------------------------*/
-
-struct usb_operations sohci_device_operations = {
- sohci_alloc_dev,
- sohci_free_dev,
- sohci_get_current_frame_number,
- sohci_submit_urb,
- sohci_unlink_urb
-};
-
-/*-------------------------------------------------------------------------*
- * ED handling functions
- *-------------------------------------------------------------------------*/
-
-/* search for the right branch to insert an interrupt ed into the int tree
- * do some load ballancing;
- * returns the branch and
- * sets the interval to interval = 2^integer (ld (interval)) */
-
-static int ep_int_ballance (ohci_t * ohci, int interval, int load)
-{
- int i, branch = 0;
-
- /* search for the least loaded interrupt endpoint branch of all 32 branches */
- for (i = 0; i < 32; i++)
- if (ohci->ohci_int_load [branch] > ohci->ohci_int_load [i]) branch = i;
-
- branch = branch % interval;
- for (i = branch; i < 32; i += interval) ohci->ohci_int_load [i] += load;
-
- return branch;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* 2^int( ld (inter)) */
-
-static int ep_2_n_interval (int inter)
-{
- int i;
- for (i = 0; ((inter >> i) > 1 ) && (i < 5); i++);
- return 1 << i;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* the int tree is a binary tree
- * in order to process it sequentially the indexes of the branches have to be mapped
- * the mapping reverses the bits of a word of num_bits length */
-
-static int ep_rev (int num_bits, int word)
-{
- int i, wout = 0;
-
- for (i = 0; i < num_bits; i++) wout |= (((word >> i) & 1) << (num_bits - i - 1));
- return wout;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* link an ed into one of the HC chains */
-
-static int ep_link (ohci_t * ohci, ed_t * edi)
-{
- int int_branch;
- int i;
- int inter;
- int interval;
- int load;
- __u32 * ed_p;
- volatile ed_t * ed = edi;
-
- ed->state = ED_OPER;
-
- switch (ed->type) {
- case PIPE_CONTROL:
- ed->hwNextED = 0;
- if (ohci->ed_controltail == NULL) {
- writel (ed->dma, &ohci->regs->ed_controlhead);
- } else {
- ohci->ed_controltail->hwNextED = cpu_to_le32 (ed->dma);
- }
- ed->ed_prev = ohci->ed_controltail;
- if (!ohci->ed_controltail && !ohci->ed_rm_list[0] &&
- !ohci->ed_rm_list[1] && !ohci->sleeping) {
- ohci->hc_control |= OHCI_CTRL_CLE;
- writel (ohci->hc_control, &ohci->regs->control);
- }
- ohci->ed_controltail = edi;
- break;
-
- case PIPE_BULK:
- ed->hwNextED = 0;
- if (ohci->ed_bulktail == NULL) {
- writel (ed->dma, &ohci->regs->ed_bulkhead);
- } else {
- ohci->ed_bulktail->hwNextED = cpu_to_le32 (ed->dma);
- }
- ed->ed_prev = ohci->ed_bulktail;
- if (!ohci->ed_bulktail && !ohci->ed_rm_list[0] &&
- !ohci->ed_rm_list[1] && !ohci->sleeping) {
- ohci->hc_control |= OHCI_CTRL_BLE;
- writel (ohci->hc_control, &ohci->regs->control);
- }
- ohci->ed_bulktail = edi;
- break;
-
- case PIPE_INTERRUPT:
- load = ed->int_load;
- interval = ep_2_n_interval (ed->int_period);
- ed->int_interval = interval;
- int_branch = ep_int_ballance (ohci, interval, load);
- ed->int_branch = int_branch;
-
- for (i = 0; i < ep_rev (6, interval); i += inter) {
- inter = 1;
- for (ed_p = &(ohci->hcca->int_table[ep_rev (5, i) + int_branch]);
- (*ed_p != 0) && ((dma_to_ed (ohci, le32_to_cpup (ed_p)))->int_interval >= interval);
- ed_p = &((dma_to_ed (ohci, le32_to_cpup (ed_p)))->hwNextED))
- inter = ep_rev (6, (dma_to_ed (ohci, le32_to_cpup (ed_p)))->int_interval);
- ed->hwNextED = *ed_p;
- *ed_p = cpu_to_le32 (ed->dma);
- }
-#ifdef DEBUG
- ep_print_int_eds (ohci, "LINK_INT");
-#endif
- break;
-
- case PIPE_ISOCHRONOUS:
- ed->hwNextED = 0;
- ed->int_interval = 1;
- if (ohci->ed_isotail != NULL) {
- ohci->ed_isotail->hwNextED = cpu_to_le32 (ed->dma);
- ed->ed_prev = ohci->ed_isotail;
- } else {
- for ( i = 0; i < 32; i += inter) {
- inter = 1;
- for (ed_p = &(ohci->hcca->int_table[ep_rev (5, i)]);
- *ed_p != 0;
- ed_p = &((dma_to_ed (ohci, le32_to_cpup (ed_p)))->hwNextED))
- inter = ep_rev (6, (dma_to_ed (ohci, le32_to_cpup (ed_p)))->int_interval);
- *ed_p = cpu_to_le32 (ed->dma);
- }
- ed->ed_prev = NULL;
- }
- ohci->ed_isotail = edi;
-#ifdef DEBUG
- ep_print_int_eds (ohci, "LINK_ISO");
-#endif
- break;
- }
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* scan the periodic table to find and unlink this ED */
-static void periodic_unlink (
- struct ohci *ohci,
- struct ed *ed,
- unsigned index,
- unsigned period
-) {
- for (; index < NUM_INTS; index += period) {
- __u32 *ed_p = &ohci->hcca->int_table [index];
-
- /* ED might have been unlinked through another path */
- while (*ed_p != 0) {
- if ((dma_to_ed (ohci, le32_to_cpup (ed_p))) == ed) {
- *ed_p = ed->hwNextED;
- break;
- }
- ed_p = & ((dma_to_ed (ohci,
- le32_to_cpup (ed_p)))->hwNextED);
- }
- }
-}
-
-/* unlink an ed from one of the HC chains.
- * 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 */
-
-static int ep_unlink (ohci_t * ohci, ed_t * ed)
-{
- int i;
-
- ed->hwINFO |= cpu_to_le32 (OHCI_ED_SKIP);
-
- switch (ed->type) {
- case PIPE_CONTROL:
- if (ed->ed_prev == NULL) {
- if (!ed->hwNextED) {
- ohci->hc_control &= ~OHCI_CTRL_CLE;
- writel (ohci->hc_control, &ohci->regs->control);
- }
- writel (le32_to_cpup (&ed->hwNextED), &ohci->regs->ed_controlhead);
- } else {
- ed->ed_prev->hwNextED = ed->hwNextED;
- }
- if (ohci->ed_controltail == ed) {
- ohci->ed_controltail = ed->ed_prev;
- } else {
- (dma_to_ed (ohci, le32_to_cpup (&ed->hwNextED)))->ed_prev = ed->ed_prev;
- }
- break;
-
- case PIPE_BULK:
- if (ed->ed_prev == NULL) {
- if (!ed->hwNextED) {
- ohci->hc_control &= ~OHCI_CTRL_BLE;
- writel (ohci->hc_control, &ohci->regs->control);
- }
- writel (le32_to_cpup (&ed->hwNextED), &ohci->regs->ed_bulkhead);
- } else {
- ed->ed_prev->hwNextED = ed->hwNextED;
- }
- if (ohci->ed_bulktail == ed) {
- ohci->ed_bulktail = ed->ed_prev;
- } else {
- (dma_to_ed (ohci, le32_to_cpup (&ed->hwNextED)))->ed_prev = ed->ed_prev;
- }
- break;
-
- case PIPE_INTERRUPT:
- periodic_unlink (ohci, ed, 0, 1);
- for (i = ed->int_branch; i < 32; i += ed->int_interval)
- ohci->ohci_int_load[i] -= ed->int_load;
-#ifdef DEBUG
- ep_print_int_eds (ohci, "UNLINK_INT");
-#endif
- break;
-
- case PIPE_ISOCHRONOUS:
- if (ohci->ed_isotail == ed)
- ohci->ed_isotail = ed->ed_prev;
- if (ed->hwNextED != 0)
- (dma_to_ed (ohci, le32_to_cpup (&ed->hwNextED)))
- ->ed_prev = ed->ed_prev;
-
- if (ed->ed_prev != NULL)
- ed->ed_prev->hwNextED = ed->hwNextED;
- else
- periodic_unlink (ohci, ed, 0, 1);
-#ifdef DEBUG
- ep_print_int_eds (ohci, "UNLINK_ISO");
-#endif
- break;
- }
- ed->state = ED_UNLINK;
- return 0;
-}
-
-
-/*-------------------------------------------------------------------------*/
-
-/* add/reinit an endpoint; this should be done once at the usb_set_configuration command,
- * but the USB stack is a little bit stateless so we do it at every transaction
- * if the state of the ed is ED_NEW then a dummy td is added and the state is changed to ED_UNLINK
- * in all other cases the state is left unchanged
- * the ed info fields are setted anyway even though most of them should not change */
-
-static ed_t * ep_add_ed (
- struct usb_device * usb_dev,
- unsigned int pipe,
- int interval,
- int load,
- int mem_flags
-)
-{
- ohci_t * ohci = usb_dev->bus->hcpriv;
- td_t * td;
- ed_t * ed_ret;
- volatile ed_t * ed;
- unsigned long flags;
-
-
- spin_lock_irqsave (&usb_ed_lock, flags);
-
- ed = ed_ret = &(usb_to_ohci (usb_dev)->ed[(usb_pipeendpoint (pipe) << 1) |
- (usb_pipecontrol (pipe)? 0: usb_pipeout (pipe))]);
-
- if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) {
- /* pending delete request */
- spin_unlock_irqrestore (&usb_ed_lock, flags);
- return NULL;
- }
-
- if (ed->state == ED_NEW) {
- ed->hwINFO = cpu_to_le32 (OHCI_ED_SKIP); /* skip ed */
- /* dummy td; end of td list for ed */
- td = td_alloc (ohci, SLAB_ATOMIC);
- /* hash the ed for later reverse mapping */
- if (!td || !hash_add_ed (ohci, (ed_t *)ed)) {
- /* out of memory */
- if (td)
- td_free(ohci, td);
- spin_unlock_irqrestore (&usb_ed_lock, flags);
- return NULL;
- }
- ed->hwTailP = cpu_to_le32 (td->td_dma);
- ed->hwHeadP = ed->hwTailP;
- ed->state = ED_UNLINK;
- ed->type = usb_pipetype (pipe);
- usb_to_ohci (usb_dev)->ed_cnt++;
- }
-
- ohci->dev[usb_pipedevice (pipe)] = usb_dev;
-
- ed->hwINFO = cpu_to_le32 (usb_pipedevice (pipe)
- | usb_pipeendpoint (pipe) << 7
- | (usb_pipeisoc (pipe)? 0x8000: 0)
- | (usb_pipecontrol (pipe)? 0: (usb_pipeout (pipe)? 0x800: 0x1000))
- | usb_pipeslow (pipe) << 13
- | usb_maxpacket (usb_dev, pipe, usb_pipeout (pipe)) << 16);
-
- if (ed->type == PIPE_INTERRUPT && ed->state == ED_UNLINK) {
- ed->int_period = interval;
- ed->int_load = load;
- }
-
- spin_unlock_irqrestore (&usb_ed_lock, flags);
- return ed_ret;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* request the removal of an endpoint
- * put the ep on the rm_list and request a stop of the bulk or ctrl list
- * real removal is done at the next start frame (SF) hardware interrupt */
-
-static void ep_rm_ed (struct usb_device * usb_dev, ed_t * ed)
-{
- unsigned int frame;
- ohci_t * ohci = usb_dev->bus->hcpriv;
-
- if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL))
- return;
-
- ed->hwINFO |= cpu_to_le32 (OHCI_ED_SKIP);
-
- if (!ohci->disabled) {
- switch (ed->type) {
- case PIPE_CONTROL: /* stop control list */
- ohci->hc_control &= ~OHCI_CTRL_CLE;
- writel (ohci->hc_control, &ohci->regs->control);
- break;
- case PIPE_BULK: /* stop bulk list */
- ohci->hc_control &= ~OHCI_CTRL_BLE;
- writel (ohci->hc_control, &ohci->regs->control);
- break;
- }
- }
-
- frame = le16_to_cpu (ohci->hcca->frame_no) & 0x1;
- ed->ed_rm_list = ohci->ed_rm_list[frame];
- ohci->ed_rm_list[frame] = ed;
-
- if (!ohci->disabled && !ohci->sleeping) {
- /* enable SOF interrupt */
- writel (OHCI_INTR_SF, &ohci->regs->intrstatus);
- writel (OHCI_INTR_SF, &ohci->regs->intrenable);
- }
-}
-
-/*-------------------------------------------------------------------------*
- * TD handling functions
- *-------------------------------------------------------------------------*/
-
-/* enqueue next TD for this URB (OHCI spec 5.2.8.2) */
-
-static void
-td_fill (ohci_t * ohci, unsigned int info,
- dma_addr_t data, int len,
- struct urb * urb, int index)
-{
- volatile td_t * td, * td_pt;
- urb_priv_t * urb_priv = urb->hcpriv;
-
- if (index >= urb_priv->length) {
- err("internal OHCI error: TD index > length");
- return;
- }
-
- /* use this td as the next dummy */
- td_pt = urb_priv->td [index];
- td_pt->hwNextTD = 0;
-
- /* fill the old dummy TD */
- td = urb_priv->td [index] = dma_to_td (ohci,
- le32_to_cpup (&urb_priv->ed->hwTailP) & ~0xf);
-
- td->ed = urb_priv->ed;
- td->next_dl_td = NULL;
- td->index = index;
- td->urb = urb;
- td->data_dma = data;
- if (!len)
- data = 0;
-
- td->hwINFO = cpu_to_le32 (info);
- if ((td->ed->type) == PIPE_ISOCHRONOUS) {
- td->hwCBP = cpu_to_le32 (data & 0xFFFFF000);
- td->ed->last_iso = info & 0xffff;
- } else {
- td->hwCBP = cpu_to_le32 (data);
- }
- if (data)
- td->hwBE = cpu_to_le32 (data + len - 1);
- else
- td->hwBE = 0;
- td->hwNextTD = cpu_to_le32 (td_pt->td_dma);
- td->hwPSW [0] = cpu_to_le16 ((data & 0x0FFF) | 0xE000);
-
- /* append to queue */
- wmb();
- td->ed->hwTailP = td->hwNextTD;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* prepare all TDs of a transfer */
-
-static void td_submit_urb (struct urb * urb)
-{
- urb_priv_t * urb_priv = urb->hcpriv;
- ohci_t * ohci = (ohci_t *) urb->dev->bus->hcpriv;
- dma_addr_t data;
- int data_len = urb->transfer_buffer_length;
- int maxps = usb_maxpacket (urb->dev, urb->pipe, usb_pipeout (urb->pipe));
- int cnt = 0;
- __u32 info = 0;
- unsigned int toggle = 0;
-
- /* OHCI handles the DATA-toggles itself, we just use the USB-toggle bits for reseting */
- if(usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe))) {
- toggle = TD_T_TOGGLE;
- } else {
- toggle = TD_T_DATA0;
- usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe), 1);
- }
-
- urb_priv->td_cnt = 0;
-
- if (data_len) {
- data = pci_map_single (ohci->ohci_dev,
- urb->transfer_buffer, data_len,
- usb_pipeout (urb->pipe)
- ? PCI_DMA_TODEVICE
- : PCI_DMA_FROMDEVICE
- );
- } else
- data = 0;
-
- switch (usb_pipetype (urb->pipe)) {
- case PIPE_BULK:
- info = usb_pipeout (urb->pipe)?
- TD_CC | TD_DP_OUT : TD_CC | TD_DP_IN ;
- while(data_len > 4096) {
- td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, 4096, urb, cnt);
- data += 4096; data_len -= 4096; cnt++;
- }
- info = usb_pipeout (urb->pipe)?
- TD_CC | TD_DP_OUT : TD_CC | TD_R | TD_DP_IN ;
- td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, data_len, urb, cnt);
- cnt++;
-
- /* If the transfer size is multiple of the pipe mtu,
- * we may need an extra TD to create a empty frame
- * Note : another way to check this condition is
- * to test if(urb_priv->length > cnt) - Jean II */
- if ((urb->transfer_flags & USB_ZERO_PACKET) &&
- usb_pipeout (urb->pipe) &&
- (urb->transfer_buffer_length != 0) &&
- ((urb->transfer_buffer_length % maxps) == 0)) {
- td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), 0, 0, urb, cnt);
- cnt++;
- }
-
- if (!ohci->sleeping) {
- wmb();
- writel (OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */
- }
- break;
-
- case PIPE_INTERRUPT:
- info = usb_pipeout (urb->pipe)?
- TD_CC | TD_DP_OUT | toggle: TD_CC | TD_R | TD_DP_IN | toggle;
- td_fill (ohci, info, data, data_len, urb, cnt++);
- break;
-
- case PIPE_CONTROL:
- info = TD_CC | TD_DP_SETUP | TD_T_DATA0;
- td_fill (ohci, info,
- pci_map_single (ohci->ohci_dev,
- urb->setup_packet, 8,
- PCI_DMA_TODEVICE),
- 8, urb, cnt++);
- if (data_len > 0) {
- info = usb_pipeout (urb->pipe)?
- TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1 : TD_CC | TD_R | TD_DP_IN | TD_T_DATA1;
- /* NOTE: mishandles transfers >8K, some >4K */
- td_fill (ohci, info, data, data_len, urb, cnt++);
- }
- info = usb_pipeout (urb->pipe)?
- TD_CC | TD_DP_IN | TD_T_DATA1: TD_CC | TD_DP_OUT | TD_T_DATA1;
- td_fill (ohci, info, data, 0, urb, cnt++);
- if (!ohci->sleeping) {
- wmb();
- writel (OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */
- }
- break;
-
- case PIPE_ISOCHRONOUS:
- for (cnt = 0; cnt < urb->number_of_packets; cnt++) {
- td_fill (ohci, TD_CC|TD_ISO | ((urb->start_frame + cnt) & 0xffff),
- data + urb->iso_frame_desc[cnt].offset,
- urb->iso_frame_desc[cnt].length, urb, cnt);
- }
- break;
- }
- if (urb_priv->length != cnt)
- dbg("TD LENGTH %d != CNT %d", urb_priv->length, cnt);
-}
-
-/*-------------------------------------------------------------------------*
- * Done List handling functions
- *-------------------------------------------------------------------------*/
-
-
-/* calculate the transfer length and update the urb */
-
-static void dl_transfer_length(td_t * td)
-{
- __u32 tdINFO, tdBE, tdCBP;
- __u16 tdPSW;
- struct urb * urb = td->urb;
- urb_priv_t * urb_priv = urb->hcpriv;
- int dlen = 0;
- int cc = 0;
-
- tdINFO = le32_to_cpup (&td->hwINFO);
- tdBE = le32_to_cpup (&td->hwBE);
- tdCBP = le32_to_cpup (&td->hwCBP);
-
-
- if (tdINFO & TD_ISO) {
- tdPSW = le16_to_cpu (td->hwPSW[0]);
- cc = (tdPSW >> 12) & 0xF;
- if (cc < 0xE) {
- if (usb_pipeout(urb->pipe)) {
- dlen = urb->iso_frame_desc[td->index].length;
- } else {
- dlen = tdPSW & 0x3ff;
- }
- urb->actual_length += dlen;
- urb->iso_frame_desc[td->index].actual_length = dlen;
- if (!(urb->transfer_flags & USB_DISABLE_SPD) && (cc == TD_DATAUNDERRUN))
- cc = TD_CC_NOERROR;
-
- urb->iso_frame_desc[td->index].status = cc_to_error[cc];
- }
- } else { /* BULK, INT, CONTROL DATA */
- if (!(usb_pipetype (urb->pipe) == PIPE_CONTROL &&
- ((td->index == 0) || (td->index == urb_priv->length - 1)))) {
- if (tdBE != 0) {
- if (td->hwCBP == 0)
- urb->actual_length += tdBE - td->data_dma + 1;
- else
- urb->actual_length += tdCBP - td->data_dma;
- }
- }
- }
-}
-
-/* handle an urb that is being unlinked */
-
-static void dl_del_urb (struct urb * urb)
-{
- wait_queue_head_t * wait_head = ((urb_priv_t *)(urb->hcpriv))->wait;
-
- urb_rm_priv_locked (urb);
-
- if (urb->transfer_flags & USB_ASYNC_UNLINK) {
- urb->status = -ECONNRESET;
- if (urb->complete)
- urb->complete (urb);
- } else {
- urb->status = -ENOENT;
- if (urb->complete)
- urb->complete (urb);
-
- /* unblock sohci_unlink_urb */
- if (wait_head)
- wake_up (wait_head);
- }
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* replies to the request have to be on a FIFO basis so
- * we reverse the reversed done-list */
-
-static td_t * dl_reverse_done_list (ohci_t * ohci)
-{
- __u32 td_list_hc;
- td_t * td_rev = NULL;
- td_t * td_list = NULL;
- urb_priv_t * urb_priv = NULL;
- unsigned long flags;
-
- spin_lock_irqsave (&usb_ed_lock, flags);
-
- td_list_hc = le32_to_cpup (&ohci->hcca->done_head) & 0xfffffff0;
- ohci->hcca->done_head = 0;
-
- while (td_list_hc) {
- td_list = dma_to_td (ohci, td_list_hc);
-
- if (TD_CC_GET (le32_to_cpup (&td_list->hwINFO))) {
- urb_priv = (urb_priv_t *) td_list->urb->hcpriv;
- dbg(" USB-error/status: %x : %p",
- TD_CC_GET (le32_to_cpup (&td_list->hwINFO)), td_list);
- if (td_list->ed->hwHeadP & cpu_to_le32 (0x1)) {
- if (urb_priv && ((td_list->index + 1) < urb_priv->length)) {
- td_list->ed->hwHeadP =
- (urb_priv->td[urb_priv->length - 1]->hwNextTD & cpu_to_le32 (0xfffffff0)) |
- (td_list->ed->hwHeadP & cpu_to_le32 (0x2));
- urb_priv->td_cnt += urb_priv->length - td_list->index - 1;
- } else
- td_list->ed->hwHeadP &= cpu_to_le32 (0xfffffff2);
- }
- }
-
- td_list->next_dl_td = td_rev;
- td_rev = td_list;
- td_list_hc = le32_to_cpup (&td_list->hwNextTD) & 0xfffffff0;
- }
- spin_unlock_irqrestore (&usb_ed_lock, flags);
- return td_list;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* there are some pending requests to remove
- * - some of the eds (if ed->state & ED_DEL (set by sohci_free_dev)
- * - some URBs/TDs if urb_priv->state == URB_DEL */
-
-static void dl_del_list (ohci_t * ohci, unsigned int frame)
-{
- unsigned long flags;
- ed_t * ed;
- __u32 edINFO;
- __u32 tdINFO;
- td_t * td = NULL, * td_next = NULL, * tdHeadP = NULL, * tdTailP;
- __u32 * td_p;
- int ctrl = 0, bulk = 0;
-
- spin_lock_irqsave (&usb_ed_lock, flags);
-
- for (ed = ohci->ed_rm_list[frame]; ed != NULL; ed = ed->ed_rm_list) {
-
- tdTailP = dma_to_td (ohci, le32_to_cpup (&ed->hwTailP) & 0xfffffff0);
- tdHeadP = dma_to_td (ohci, le32_to_cpup (&ed->hwHeadP) & 0xfffffff0);
- edINFO = le32_to_cpup (&ed->hwINFO);
- td_p = &ed->hwHeadP;
-
- for (td = tdHeadP; td != tdTailP; td = td_next) {
- struct urb * urb = td->urb;
- urb_priv_t * urb_priv = td->urb->hcpriv;
-
- td_next = dma_to_td (ohci, le32_to_cpup (&td->hwNextTD) & 0xfffffff0);
- if ((urb_priv->state == URB_DEL) || (ed->state & ED_DEL)) {
- tdINFO = le32_to_cpup (&td->hwINFO);
- if (TD_CC_GET (tdINFO) < 0xE)
- dl_transfer_length (td);
- *td_p = td->hwNextTD | (*td_p & cpu_to_le32 (0x3));
-
- /* URB is done; clean up */
- if (++(urb_priv->td_cnt) == urb_priv->length)
- dl_del_urb (urb);
- } else {
- td_p = &td->hwNextTD;
- }
- }
-
- if (ed->state & ED_DEL) { /* set by sohci_free_dev */
- struct ohci_device * dev = usb_to_ohci (ohci->dev[edINFO & 0x7F]);
- td_free (ohci, tdTailP); /* free dummy td */
- ed->hwINFO = cpu_to_le32 (OHCI_ED_SKIP);
- ed->state = ED_NEW;
- hash_free_ed(ohci, ed);
- /* if all eds are removed wake up sohci_free_dev */
- if (!--dev->ed_cnt) {
- wait_queue_head_t *wait_head = dev->wait;
-
- dev->wait = 0;
- if (wait_head)
- wake_up (wait_head);
- }
- } else {
- ed->state &= ~ED_URB_DEL;
- tdHeadP = dma_to_td (ohci, le32_to_cpup (&ed->hwHeadP) & 0xfffffff0);
-
- if (tdHeadP == tdTailP) {
- if (ed->state == ED_OPER)
- ep_unlink(ohci, ed);
- } else
- ed->hwINFO &= ~cpu_to_le32 (OHCI_ED_SKIP);
- }
-
- switch (ed->type) {
- case PIPE_CONTROL:
- ctrl = 1;
- break;
- case PIPE_BULK:
- bulk = 1;
- break;
- }
- }
-
- /* maybe reenable control and bulk lists */
- if (!ohci->disabled) {
- if (ctrl) /* reset control list */
- writel (0, &ohci->regs->ed_controlcurrent);
- if (bulk) /* reset bulk list */
- writel (0, &ohci->regs->ed_bulkcurrent);
- if (!ohci->ed_rm_list[!frame] && !ohci->sleeping) {
- if (ohci->ed_controltail)
- ohci->hc_control |= OHCI_CTRL_CLE;
- if (ohci->ed_bulktail)
- ohci->hc_control |= OHCI_CTRL_BLE;
- writel (ohci->hc_control, &ohci->regs->control);
- }
- }
-
- ohci->ed_rm_list[frame] = NULL;
- spin_unlock_irqrestore (&usb_ed_lock, flags);
-}
-
-
-
-/*-------------------------------------------------------------------------*/
-
-/* td done list */
-
-static void dl_done_list (ohci_t * ohci, td_t * td_list)
-{
- td_t * td_list_next = NULL;
- ed_t * ed;
- int cc = 0;
- struct urb * urb;
- urb_priv_t * urb_priv;
- __u32 tdINFO, edHeadP, edTailP;
-
- unsigned long flags;
-
- while (td_list) {
- td_list_next = td_list->next_dl_td;
-
- urb = td_list->urb;
- urb_priv = urb->hcpriv;
- tdINFO = le32_to_cpup (&td_list->hwINFO);
-
- ed = td_list->ed;
-
- dl_transfer_length(td_list);
-
- /* error code of transfer */
- cc = TD_CC_GET (tdINFO);
- if (cc == TD_CC_STALL)
- usb_endpoint_halt(urb->dev,
- usb_pipeendpoint(urb->pipe),
- usb_pipeout(urb->pipe));
-
- if (!(urb->transfer_flags & USB_DISABLE_SPD)
- && (cc == TD_DATAUNDERRUN))
- cc = TD_CC_NOERROR;
-
- if (++(urb_priv->td_cnt) == urb_priv->length) {
- if ((ed->state & (ED_OPER | ED_UNLINK))
- && (urb_priv->state != URB_DEL)) {
- urb->status = cc_to_error[cc];
- sohci_return_urb (ohci, urb);
- } else {
- spin_lock_irqsave (&usb_ed_lock, flags);
- dl_del_urb (urb);
- spin_unlock_irqrestore (&usb_ed_lock, flags);
- }
- }
-
- spin_lock_irqsave (&usb_ed_lock, flags);
- if (ed->state != ED_NEW) {
- edHeadP = le32_to_cpup (&ed->hwHeadP) & 0xfffffff0;
- edTailP = le32_to_cpup (&ed->hwTailP);
-
- /* unlink eds if they are not busy */
- if ((edHeadP == edTailP) && (ed->state == ED_OPER))
- ep_unlink (ohci, ed);
- }
- spin_unlock_irqrestore (&usb_ed_lock, flags);
-
- td_list = td_list_next;
- }
-}
-
-
-
-
-/*-------------------------------------------------------------------------*
- * Virtual Root Hub
- *-------------------------------------------------------------------------*/
-
-/* Device descriptor */
-static __u8 root_hub_dev_des[] =
-{
- 0x12, /* __u8 bLength; */
- 0x01, /* __u8 bDescriptorType; Device */
- 0x10, /* __u16 bcdUSB; v1.1 */
- 0x01,
- 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
- 0x00, /* __u8 bDeviceSubClass; */
- 0x00, /* __u8 bDeviceProtocol; */
- 0x08, /* __u8 bMaxPacketSize0; 8 Bytes */
- 0x00, /* __u16 idVendor; */
- 0x00,
- 0x00, /* __u16 idProduct; */
- 0x00,
- 0x00, /* __u16 bcdDevice; */
- 0x00,
- 0x00, /* __u8 iManufacturer; */
- 0x02, /* __u8 iProduct; */
- 0x01, /* __u8 iSerialNumber; */
- 0x01 /* __u8 bNumConfigurations; */
-};
-
-
-/* Configuration descriptor */
-static __u8 root_hub_config_des[] =
-{
- 0x09, /* __u8 bLength; */
- 0x02, /* __u8 bDescriptorType; Configuration */
- 0x19, /* __u16 wTotalLength; */
- 0x00,
- 0x01, /* __u8 bNumInterfaces; */
- 0x01, /* __u8 bConfigurationValue; */
- 0x00, /* __u8 iConfiguration; */
- 0x40, /* __u8 bmAttributes;
- Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
- 0x00, /* __u8 MaxPower; */
-
- /* interface */
- 0x09, /* __u8 if_bLength; */
- 0x04, /* __u8 if_bDescriptorType; Interface */
- 0x00, /* __u8 if_bInterfaceNumber; */
- 0x00, /* __u8 if_bAlternateSetting; */
- 0x01, /* __u8 if_bNumEndpoints; */
- 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
- 0x00, /* __u8 if_bInterfaceSubClass; */
- 0x00, /* __u8 if_bInterfaceProtocol; */
- 0x00, /* __u8 if_iInterface; */
-
- /* endpoint */
- 0x07, /* __u8 ep_bLength; */
- 0x05, /* __u8 ep_bDescriptorType; Endpoint */
- 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
- 0x03, /* __u8 ep_bmAttributes; Interrupt */
- 0x02, /* __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
- 0x00,
- 0xff /* __u8 ep_bInterval; 255 ms */
-};
-
-/* Hub class-specific descriptor is constructed dynamically */
-
-
-/*-------------------------------------------------------------------------*/
-
-/* prepare Interrupt pipe data; HUB INTERRUPT ENDPOINT */
-
-static int rh_send_irq (ohci_t * ohci, void * rh_data, int rh_len)
-{
- int num_ports;
- int i;
- int ret;
- int len;
-
- __u8 data[8];
-
- num_ports = roothub_a (ohci) & RH_A_NDP;
- if (num_ports > MAX_ROOT_PORTS) {
- err ("bogus NDP=%d for OHCI usb-%s", num_ports,
- ohci->ohci_dev->slot_name);
- err ("rereads as NDP=%d",
- readl (&ohci->regs->roothub.a) & RH_A_NDP);
- /* retry later; "should not happen" */
- return 0;
- }
- *(__u8 *) data = (roothub_status (ohci) & (RH_HS_LPSC | RH_HS_OCIC))
- ? 1: 0;
- ret = *(__u8 *) data;
-
- for ( i = 0; i < num_ports; i++) {
- *(__u8 *) (data + (i + 1) / 8) |=
- ((roothub_portstatus (ohci, i) &
- (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | RH_PS_OCIC | RH_PS_PRSC))
- ? 1: 0) << ((i + 1) % 8);
- ret += *(__u8 *) (data + (i + 1) / 8);
- }
- len = i/8 + 1;
-
- if (ret > 0) {
- memcpy(rh_data, data,
- min_t(unsigned int, len,
- min_t(unsigned int, rh_len, sizeof(data))));
- return len;
- }
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* Virtual Root Hub INTs are polled by this timer every "interval" ms */
-
-static void rh_int_timer_do (unsigned long ptr)
-{
- int len;
-
- struct urb * urb = (struct urb *) ptr;
- ohci_t * ohci = urb->dev->bus->hcpriv;
-
- if (ohci->disabled)
- return;
-
- /* ignore timers firing during PM suspend, etc */
- if ((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER)
- goto out;
-
- if(ohci->rh.send) {
- len = rh_send_irq (ohci, urb->transfer_buffer, urb->transfer_buffer_length);
- if (len > 0) {
- urb->actual_length = len;
-#ifdef DEBUG
- urb_print (urb, "RET-t(rh)", usb_pipeout (urb->pipe));
-#endif
- if (urb->complete)
- urb->complete (urb);
- }
- }
- out:
- rh_init_int_timer (urb);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* Root Hub INTs are polled by this timer */
-
-static int rh_init_int_timer (struct urb * urb)
-{
- ohci_t * ohci = urb->dev->bus->hcpriv;
-
- ohci->rh.interval = urb->interval;
- init_timer (&ohci->rh.rh_int_timer);
- ohci->rh.rh_int_timer.function = rh_int_timer_do;
- ohci->rh.rh_int_timer.data = (unsigned long) urb;
- ohci->rh.rh_int_timer.expires =
- jiffies + (HZ * (urb->interval < 30? 30: urb->interval)) / 1000;
- add_timer (&ohci->rh.rh_int_timer);
-
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-#define OK(x) len = (x); break
-#define WR_RH_STAT(x) writel((x), &ohci->regs->roothub.status)
-#define WR_RH_PORTSTAT(x) writel((x), &ohci->regs->roothub.portstatus[wIndex-1])
-#define RD_RH_STAT roothub_status(ohci)
-#define RD_RH_PORTSTAT roothub_portstatus(ohci,wIndex-1)
-
-/* request to virtual root hub */
-
-static int rh_submit_urb (struct urb * urb)
-{
- struct usb_device * usb_dev = urb->dev;
- ohci_t * ohci = usb_dev->bus->hcpriv;
- unsigned int pipe = urb->pipe;
- struct usb_ctrlrequest * cmd = (struct usb_ctrlrequest *) urb->setup_packet;
- void * data = urb->transfer_buffer;
- int leni = urb->transfer_buffer_length;
- int len = 0;
- int status = TD_CC_NOERROR;
-
- __u32 datab[4];
- __u8 * data_buf = (__u8 *) datab;
-
- __u16 bmRType_bReq;
- __u16 wValue;
- __u16 wIndex;
- __u16 wLength;
-
- if (usb_pipeint(pipe)) {
- ohci->rh.urb = urb;
- ohci->rh.send = 1;
- ohci->rh.interval = urb->interval;
- rh_init_int_timer(urb);
- urb->status = cc_to_error [TD_CC_NOERROR];
-
- return 0;
- }
-
- bmRType_bReq = cmd->bRequestType | (cmd->bRequest << 8);
- wValue = le16_to_cpu (cmd->wValue);
- wIndex = le16_to_cpu (cmd->wIndex);
- wLength = le16_to_cpu (cmd->wLength);
-
- switch (bmRType_bReq) {
- /* Request Destination:
- without flags: Device,
- RH_INTERFACE: interface,
- RH_ENDPOINT: endpoint,
- RH_CLASS means HUB here,
- RH_OTHER | RH_CLASS almost ever means HUB_PORT here
- */
-
- case RH_GET_STATUS:
- *(__u16 *) data_buf = cpu_to_le16 (1); OK (2);
- case RH_GET_STATUS | RH_INTERFACE:
- *(__u16 *) data_buf = cpu_to_le16 (0); OK (2);
- case RH_GET_STATUS | RH_ENDPOINT:
- *(__u16 *) data_buf = cpu_to_le16 (0); OK (2);
- case RH_GET_STATUS | RH_CLASS:
- *(__u32 *) data_buf = cpu_to_le32 (
- RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
- OK (4);
- case RH_GET_STATUS | RH_OTHER | RH_CLASS:
- *(__u32 *) data_buf = cpu_to_le32 (RD_RH_PORTSTAT); OK (4);
-
- case RH_CLEAR_FEATURE | RH_ENDPOINT:
- switch (wValue) {
- case (RH_ENDPOINT_STALL): OK (0);
- }
- break;
-
- case RH_CLEAR_FEATURE | RH_CLASS:
- switch (wValue) {
- case RH_C_HUB_LOCAL_POWER:
- OK(0);
- case (RH_C_HUB_OVER_CURRENT):
- WR_RH_STAT(RH_HS_OCIC); OK (0);
- }
- break;
-
- case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
- switch (wValue) {
- case (RH_PORT_ENABLE):
- WR_RH_PORTSTAT (RH_PS_CCS ); OK (0);
- case (RH_PORT_SUSPEND):
- WR_RH_PORTSTAT (RH_PS_POCI); OK (0);
- case (RH_PORT_POWER):
- WR_RH_PORTSTAT (RH_PS_LSDA); OK (0);
- case (RH_C_PORT_CONNECTION):
- WR_RH_PORTSTAT (RH_PS_CSC ); OK (0);
- case (RH_C_PORT_ENABLE):
- WR_RH_PORTSTAT (RH_PS_PESC); OK (0);
- case (RH_C_PORT_SUSPEND):
- WR_RH_PORTSTAT (RH_PS_PSSC); OK (0);
- case (RH_C_PORT_OVER_CURRENT):
- WR_RH_PORTSTAT (RH_PS_OCIC); OK (0);
- case (RH_C_PORT_RESET):
- WR_RH_PORTSTAT (RH_PS_PRSC); OK (0);
- }
- break;
-
- case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
- switch (wValue) {
- case (RH_PORT_SUSPEND):
- WR_RH_PORTSTAT (RH_PS_PSS ); OK (0);
- case (RH_PORT_RESET): /* BUG IN HUP CODE *********/
- if (RD_RH_PORTSTAT & RH_PS_CCS)
- WR_RH_PORTSTAT (RH_PS_PRS);
- OK (0);
- case (RH_PORT_POWER):
- WR_RH_PORTSTAT (RH_PS_PPS ); OK (0);
- case (RH_PORT_ENABLE): /* BUG IN HUP CODE *********/
- if (RD_RH_PORTSTAT & RH_PS_CCS)
- WR_RH_PORTSTAT (RH_PS_PES );
- OK (0);
- }
- break;
-
- case RH_SET_ADDRESS: ohci->rh.devnum = wValue; OK(0);
-
- case RH_GET_DESCRIPTOR:
- switch ((wValue & 0xff00) >> 8) {
- case (0x01): /* device descriptor */
- len = min_t(unsigned int,
- leni,
- min_t(unsigned int,
- sizeof (root_hub_dev_des),
- wLength));
- data_buf = root_hub_dev_des; OK(len);
- case (0x02): /* configuration descriptor */
- len = min_t(unsigned int,
- leni,
- min_t(unsigned int,
- sizeof (root_hub_config_des),
- wLength));
- data_buf = root_hub_config_des; OK(len);
- case (0x03): /* string descriptors */
- len = usb_root_hub_string (wValue & 0xff,
- (int)(long) ohci->regs, "OHCI",
- data, wLength);
- if (len > 0) {
- data_buf = data;
- OK(min_t(int, leni, len));
- }
- // else fallthrough
- default:
- status = TD_CC_STALL;
- }
- break;
-
- case RH_GET_DESCRIPTOR | RH_CLASS:
- {
- __u32 temp = roothub_a (ohci);
-
- data_buf [0] = 9; // min length;
- data_buf [1] = 0x29;
- data_buf [2] = temp & RH_A_NDP;
- data_buf [3] = 0;
- if (temp & RH_A_PSM) /* per-port power switching? */
- data_buf [3] |= 0x1;
- if (temp & RH_A_NOCP) /* no overcurrent reporting? */
- data_buf [3] |= 0x10;
- else if (temp & RH_A_OCPM) /* per-port overcurrent reporting? */
- data_buf [3] |= 0x8;
-
- datab [1] = 0;
- data_buf [5] = (temp & RH_A_POTPGT) >> 24;
- temp = roothub_b (ohci);
- data_buf [7] = temp & RH_B_DR;
- if (data_buf [2] < 7) {
- data_buf [8] = 0xff;
- } else {
- data_buf [0] += 2;
- data_buf [8] = (temp & RH_B_DR) >> 8;
- data_buf [10] = data_buf [9] = 0xff;
- }
-
- len = min_t(unsigned int, leni,
- min_t(unsigned int, data_buf [0], wLength));
- OK (len);
- }
-
- case RH_GET_CONFIGURATION: *(__u8 *) data_buf = 0x01; OK (1);
-
- case RH_SET_CONFIGURATION: WR_RH_STAT (0x10000); OK (0);
-
- default:
- dbg ("unsupported root hub command");
- status = TD_CC_STALL;
- }
-
-#ifdef DEBUG
- // ohci_dump_roothub (ohci, 0);
-#endif
-
- len = min_t(int, len, leni);
- if (data != data_buf)
- memcpy (data, data_buf, len);
- urb->actual_length = len;
- urb->status = cc_to_error [status];
-
-#ifdef DEBUG
- urb_print (urb, "RET(rh)", usb_pipeout (urb->pipe));
-#endif
-
- urb->hcpriv = NULL;
- usb_dec_dev_use (usb_dev);
- urb->dev = NULL;
- if (urb->complete)
- urb->complete (urb);
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int rh_unlink_urb (struct urb * urb)
-{
- ohci_t * ohci = urb->dev->bus->hcpriv;
-
- if (ohci->rh.urb == urb) {
- ohci->rh.send = 0;
- del_timer (&ohci->rh.rh_int_timer);
- ohci->rh.urb = NULL;
-
- urb->hcpriv = NULL;
- usb_dec_dev_use(urb->dev);
- urb->dev = NULL;
- if (urb->transfer_flags & USB_ASYNC_UNLINK) {
- urb->status = -ECONNRESET;
- if (urb->complete)
- urb->complete (urb);
- } else
- urb->status = -ENOENT;
- }
- return 0;
-}
-
-/*-------------------------------------------------------------------------*
- * HC functions
- *-------------------------------------------------------------------------*/
-
-/* reset the HC and BUS */
-
-static int hc_reset (ohci_t * ohci)
-{
- int timeout = 30;
- int smm_timeout = 50; /* 0,5 sec */
-
-#ifndef __hppa__
- /* PA-RISC doesn't have SMM, but PDC might leave IR set */
- if (readl (&ohci->regs->control) & OHCI_CTRL_IR) { /* SMM owns the HC */
- writel (OHCI_OCR, &ohci->regs->cmdstatus); /* request ownership */
- dbg("USB HC TakeOver from SMM");
- while (readl (&ohci->regs->control) & OHCI_CTRL_IR) {
- wait_ms (10);
- if (--smm_timeout == 0) {
- err("USB HC TakeOver failed!");
- return -1;
- }
- }
- }
-#endif
-
- /* Disable HC interrupts */
- writel (OHCI_INTR_MIE, &ohci->regs->intrdisable);
-
- dbg("USB HC reset_hc usb-%s: ctrl = 0x%x ;",
- ohci->ohci_dev->slot_name,
- readl (&ohci->regs->control));
-
- /* Reset USB (needed by some controllers) */
- writel (0, &ohci->regs->control);
-
- /* HC Reset requires max 10 ms delay */
- writel (OHCI_HCR, &ohci->regs->cmdstatus);
- while ((readl (&ohci->regs->cmdstatus) & OHCI_HCR) != 0) {
- if (--timeout == 0) {
- err("USB HC reset timed out!");
- return -1;
- }
- udelay (1);
- }
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* Start an OHCI controller, set the BUS operational
- * enable interrupts
- * connect the virtual root hub */
-
-static int hc_start (ohci_t * ohci)
-{
- __u32 mask;
- unsigned int fminterval;
- struct usb_device * usb_dev;
- struct ohci_device * dev;
-
- ohci->disabled = 1;
-
- /* Tell the controller where the control and bulk lists are
- * The lists are empty now. */
-
- writel (0, &ohci->regs->ed_controlhead);
- writel (0, &ohci->regs->ed_bulkhead);
-
- writel (ohci->hcca_dma, &ohci->regs->hcca); /* a reset clears this */
-
- fminterval = 0x2edf;
- writel ((fminterval * 9) / 10, &ohci->regs->periodicstart);
- fminterval |= ((((fminterval - 210) * 6) / 7) << 16);
- writel (fminterval, &ohci->regs->fminterval);
- writel (0x628, &ohci->regs->lsthresh);
-
- /* start controller operations */
- ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER;
- ohci->disabled = 0;
- writel (ohci->hc_control, &ohci->regs->control);
-
- /* Choose the interrupts we care about now, others later on demand */
- mask = OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_WDH | OHCI_INTR_SO;
- writel (mask, &ohci->regs->intrenable);
- writel (mask, &ohci->regs->intrstatus);
-
-#ifdef OHCI_USE_NPS
- if(ohci->flags & OHCI_QUIRK_SUCKYIO)
- {
- /* NSC 87560 at least requires different setup .. */
- writel ((roothub_a (ohci) | RH_A_NOCP) &
- ~(RH_A_OCPM | RH_A_POTPGT | RH_A_PSM | RH_A_NPS),
- &ohci->regs->roothub.a);
- }
- else
- {
- /* required for AMD-756 and some Mac platforms */
- writel ((roothub_a (ohci) | RH_A_NPS) & ~RH_A_PSM,
- &ohci->regs->roothub.a);
- }
- writel (RH_HS_LPSC, &ohci->regs->roothub.status);
-#endif /* OHCI_USE_NPS */
-
- // POTPGT delay is bits 24-31, in 2 ms units.
- mdelay ((roothub_a (ohci) >> 23) & 0x1fe);
-
- /* connect the virtual root hub */
- ohci->rh.devnum = 0;
- usb_dev = usb_alloc_dev (NULL, ohci->bus);
- if (!usb_dev) {
- ohci->disabled = 1;
- return -ENOMEM;
- }
-
- dev = usb_to_ohci (usb_dev);
- ohci->bus->root_hub = usb_dev;
- usb_connect (usb_dev);
- if (usb_new_device (usb_dev) != 0) {
- usb_free_dev (usb_dev);
- ohci->disabled = 1;
- return -ENODEV;
- }
-
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* called only from interrupt handler */
-
-static void check_timeouts (struct ohci *ohci)
-{
- spin_lock (&usb_ed_lock);
- while (!list_empty (&ohci->timeout_list)) {
- struct urb *urb;
-
- urb = list_entry (ohci->timeout_list.next, struct urb, urb_list);
- if (time_after (jiffies, urb->timeout))
- break;
-
- list_del_init (&urb->urb_list);
- if (urb->status != -EINPROGRESS)
- continue;
-
- urb->transfer_flags |= USB_TIMEOUT_KILLED | USB_ASYNC_UNLINK;
- spin_unlock (&usb_ed_lock);
-
- // outside the interrupt handler (in a timer...)
- // this reference would race interrupts
- sohci_unlink_urb (urb);
-
- spin_lock (&usb_ed_lock);
- }
- spin_unlock (&usb_ed_lock);
-}
-
-
-/*-------------------------------------------------------------------------*/
-
-/* an interrupt happens */
-
-static void hc_interrupt (int irq, void * __ohci, struct pt_regs * r)
-{
- ohci_t * ohci = __ohci;
- struct ohci_regs * regs = ohci->regs;
- int ints;
-
- /* avoid (slow) readl if only WDH happened */
- if ((ohci->hcca->done_head != 0)
- && !(le32_to_cpup (&ohci->hcca->done_head) & 0x01)) {
- ints = OHCI_INTR_WDH;
-
- /* cardbus/... hardware gone before remove() */
- } else if ((ints = readl (®s->intrstatus)) == ~(u32)0) {
- ohci->disabled++;
- err ("%s device removed!", ohci->ohci_dev->slot_name);
- return;
-
- /* interrupt for some other device? */
- } else if ((ints &= readl (®s->intrenable)) == 0) {
- return;
- }
-
- // dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no));
-
- if (ints & OHCI_INTR_UE) {
- ohci->disabled++;
- err ("OHCI Unrecoverable Error, controller usb-%s disabled",
- ohci->ohci_dev->slot_name);
- // e.g. due to PCI Master/Target Abort
-
-#ifdef DEBUG
- ohci_dump (ohci, 1);
-#else
- // FIXME: be optimistic, hope that bug won't repeat often.
- // Make some non-interrupt context restart the controller.
- // Count and limit the retries though; either hardware or
- // software errors can go forever...
-#endif
- hc_reset (ohci);
- }
-
- if (ints & OHCI_INTR_WDH) {
- writel (OHCI_INTR_WDH, ®s->intrdisable);
- dl_done_list (ohci, dl_reverse_done_list (ohci));
- writel (OHCI_INTR_WDH, ®s->intrenable);
- }
-
- if (ints & OHCI_INTR_SO) {
- dbg("USB Schedule overrun");
- writel (OHCI_INTR_SO, ®s->intrenable);
- }
-
- // FIXME: this assumes SOF (1/ms) interrupts don't get lost...
- if (ints & OHCI_INTR_SF) {
- unsigned int frame = le16_to_cpu (ohci->hcca->frame_no) & 1;
- writel (OHCI_INTR_SF, ®s->intrdisable);
- if (ohci->ed_rm_list[!frame] != NULL) {
- dl_del_list (ohci, !frame);
- }
- if (ohci->ed_rm_list[frame] != NULL)
- writel (OHCI_INTR_SF, ®s->intrenable);
- }
-
- if (!list_empty (&ohci->timeout_list)) {
- check_timeouts (ohci);
-// FIXME: enable SF as needed in a timer;
-// don't make lots of 1ms interrupts
-// On unloaded USB, think 4k ~= 4-5msec
- if (!list_empty (&ohci->timeout_list))
- writel (OHCI_INTR_SF, ®s->intrenable);
- }
-
- writel (ints, ®s->intrstatus);
- writel (OHCI_INTR_MIE, ®s->intrenable);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* allocate OHCI */
-
-static ohci_t * __devinit hc_alloc_ohci (struct pci_dev *dev, void * mem_base)
-{
- ohci_t * ohci;
-
- ohci = (ohci_t *) kmalloc (sizeof *ohci, GFP_KERNEL);
- if (!ohci)
- return NULL;
-
- memset (ohci, 0, sizeof (ohci_t));
-
- ohci->hcca = pci_alloc_consistent (dev, sizeof *ohci->hcca,
- &ohci->hcca_dma);
- if (!ohci->hcca) {
- kfree (ohci);
- return NULL;
- }
- memset (ohci->hcca, 0, sizeof (struct ohci_hcca));
-
- ohci->disabled = 1;
- ohci->sleeping = 0;
- ohci->irq = -1;
- ohci->regs = mem_base;
-
- ohci->ohci_dev = dev;
- pci_set_drvdata(dev, ohci);
-
- INIT_LIST_HEAD (&ohci->ohci_hcd_list);
- list_add (&ohci->ohci_hcd_list, &ohci_hcd_list);
-
- INIT_LIST_HEAD (&ohci->timeout_list);
-
- ohci->bus = usb_alloc_bus (&sohci_device_operations);
- if (!ohci->bus) {
- pci_set_drvdata (dev, NULL);
- pci_free_consistent (ohci->ohci_dev, sizeof *ohci->hcca,
- ohci->hcca, ohci->hcca_dma);
- kfree (ohci);
- return NULL;
- }
- ohci->bus->bus_name = dev->slot_name;
- ohci->bus->hcpriv = (void *) ohci;
-
- return ohci;
-}
-
-
-/*-------------------------------------------------------------------------*/
-
-/* De-allocate all resources.. */
-
-static void hc_release_ohci (ohci_t * ohci)
-{
- dbg ("USB HC release ohci usb-%s", ohci->ohci_dev->slot_name);
-
- /* disconnect all devices */
- if (ohci->bus->root_hub)
- usb_disconnect (&ohci->bus->root_hub);
-
- if (!ohci->disabled)
- hc_reset (ohci);
-
- if (ohci->irq >= 0) {
- free_irq (ohci->irq, ohci);
- ohci->irq = -1;
- }
- pci_set_drvdata(ohci->ohci_dev, NULL);
- if (ohci->bus) {
- if (ohci->bus->busnum != -1)
- usb_deregister_bus (ohci->bus);
-
- usb_free_bus (ohci->bus);
- }
-
- list_del (&ohci->ohci_hcd_list);
- INIT_LIST_HEAD (&ohci->ohci_hcd_list);
-
- ohci_mem_cleanup (ohci);
-
- /* unmap the IO address space */
- iounmap (ohci->regs);
-
- pci_free_consistent (ohci->ohci_dev, sizeof *ohci->hcca,
- ohci->hcca, ohci->hcca_dma);
- kfree (ohci);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* Increment the module usage count, start the control thread and
- * return success. */
-
-static struct pci_driver ohci_pci_driver;
-
-static int __devinit
-hc_found_ohci (struct pci_dev *dev, int irq,
- void *mem_base, const struct pci_device_id *id)
-{
- ohci_t * ohci;
- char buf[8], *bufp = buf;
- int ret;
-
-#ifndef __sparc__
- sprintf(buf, "%d", irq);
-#else
- bufp = __irq_itoa(irq);
-#endif
- printk(KERN_INFO __FILE__ ": USB OHCI at membase 0x%lx, IRQ %s\n",
- (unsigned long) mem_base, bufp);
- printk(KERN_INFO __FILE__ ": usb-%s, %s\n", dev->slot_name, dev->name);
-
- ohci = hc_alloc_ohci (dev, mem_base);
- if (!ohci) {
- return -ENOMEM;
- }
- if ((ret = ohci_mem_init (ohci)) < 0) {
- hc_release_ohci (ohci);
- return ret;
- }
- ohci->flags = id->driver_data;
-
- /* Check for NSC87560. We have to look at the bridge (fn1) to identify
- the USB (fn2). This quirk might apply to more or even all NSC stuff
- I don't know.. */
-
- if(dev->vendor == PCI_VENDOR_ID_NS)
- {
- struct pci_dev *fn1 = pci_find_slot(dev->bus->number, PCI_DEVFN(PCI_SLOT(dev->devfn), 1));
- if(fn1 && fn1->vendor == PCI_VENDOR_ID_NS && fn1->device == PCI_DEVICE_ID_NS_87560_LIO)
- ohci->flags |= OHCI_QUIRK_SUCKYIO;
-
- }
-
- if (ohci->flags & OHCI_QUIRK_SUCKYIO)
- printk (KERN_INFO __FILE__ ": Using NSC SuperIO setup\n");
- if (ohci->flags & OHCI_QUIRK_AMD756)
- printk (KERN_INFO __FILE__ ": AMD756 erratum 4 workaround\n");
-
- if (hc_reset (ohci) < 0) {
- hc_release_ohci (ohci);
- return -ENODEV;
- }
-
- /* FIXME this is a second HC reset; why?? */
- writel (ohci->hc_control = OHCI_USB_RESET, &ohci->regs->control);
- wait_ms (10);
-
- usb_register_bus (ohci->bus);
-
- if (request_irq (irq, hc_interrupt, SA_SHIRQ,
- ohci_pci_driver.name, ohci) != 0) {
- err ("request interrupt %s failed", bufp);
- hc_release_ohci (ohci);
- return -EBUSY;
- }
- ohci->irq = irq;
-
- if (hc_start (ohci) < 0) {
- err ("can't start usb-%s", dev->slot_name);
- hc_release_ohci (ohci);
- return -EBUSY;
- }
-
-#ifdef DEBUG
- ohci_dump (ohci, 1);
-#endif
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-#ifdef CONFIG_PM
-
-/* controller died; cleanup debris, then restart */
-/* must not be called from interrupt context */
-
-static void hc_restart (ohci_t *ohci)
-{
- int temp;
- int i;
-
- if (ohci->pci_latency)
- pci_write_config_byte (ohci->ohci_dev, PCI_LATENCY_TIMER, ohci->pci_latency);
-
- ohci->disabled = 1;
- ohci->sleeping = 0;
- if (ohci->bus->root_hub)
- usb_disconnect (&ohci->bus->root_hub);
-
- /* empty the interrupt branches */
- for (i = 0; i < NUM_INTS; i++) ohci->ohci_int_load[i] = 0;
- for (i = 0; i < NUM_INTS; i++) ohci->hcca->int_table[i] = 0;
-
- /* no EDs to remove */
- ohci->ed_rm_list [0] = NULL;
- ohci->ed_rm_list [1] = NULL;
-
- /* empty control and bulk lists */
- ohci->ed_isotail = NULL;
- ohci->ed_controltail = NULL;
- ohci->ed_bulktail = NULL;
-
- if ((temp = hc_reset (ohci)) < 0 || (temp = hc_start (ohci)) < 0) {
- err ("can't restart usb-%s, %d", ohci->ohci_dev->slot_name, temp);
- } else
- dbg ("restart usb-%s completed", ohci->ohci_dev->slot_name);
-}
-
-#endif /* CONFIG_PM */
-
-/*-------------------------------------------------------------------------*/
-
-/* configured so that an OHCI device is always provided */
-/* always called with process context; sleeping is OK */
-
-static int __devinit
-ohci_pci_probe (struct pci_dev *dev, const struct pci_device_id *id)
-{
- unsigned long mem_resource, mem_len;
- void *mem_base;
- int status;
-
- if (pci_enable_device(dev) < 0)
- return -ENODEV;
-
- if (!dev->irq) {
- err("found OHCI device with no IRQ assigned. check BIOS settings!");
- pci_disable_device (dev);
- return -ENODEV;
- }
-
- /* we read its hardware registers as memory */
- mem_resource = pci_resource_start(dev, 0);
- mem_len = pci_resource_len(dev, 0);
- if (!request_mem_region (mem_resource, mem_len, ohci_pci_driver.name)) {
- dbg ("controller already in use");
- pci_disable_device (dev);
- return -EBUSY;
- }
-
- mem_base = ioremap_nocache (mem_resource, mem_len);
- if (!mem_base) {
- err("Error mapping OHCI memory");
- release_mem_region (mem_resource, mem_len);
- pci_disable_device (dev);
- return -EFAULT;
- }
-
- /* controller writes into our memory */
- pci_set_master (dev);
-
- status = hc_found_ohci (dev, dev->irq, mem_base, id);
- if (status < 0) {
- iounmap (mem_base);
- release_mem_region (mem_resource, mem_len);
- pci_disable_device (dev);
- }
- return status;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* may be called from interrupt context [interface spec] */
-/* may be called without controller present */
-/* may be called with controller, bus, and devices active */
-
-static void __devexit
-ohci_pci_remove (struct pci_dev *dev)
-{
- ohci_t *ohci = pci_get_drvdata(dev);
-
- dbg ("remove %s controller usb-%s%s%s",
- hcfs2string (ohci->hc_control & OHCI_CTRL_HCFS),
- dev->slot_name,
- ohci->disabled ? " (disabled)" : "",
- in_interrupt () ? " in interrupt" : ""
- );
-#ifdef DEBUG
- ohci_dump (ohci, 1);
-#endif
-
- /* don't wake up sleeping controllers, or block in interrupt context */
- if ((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER || in_interrupt ()) {
- dbg ("controller being disabled");
- ohci->disabled = 1;
- }
-
- /* on return, USB will always be reset (if present) */
- if (ohci->disabled)
- writel (ohci->hc_control = OHCI_USB_RESET,
- &ohci->regs->control);
-
- hc_release_ohci (ohci);
-
- release_mem_region (pci_resource_start (dev, 0), pci_resource_len (dev, 0));
- pci_disable_device (dev);
-}
-
-
-#ifdef CONFIG_PM
-
-/*-------------------------------------------------------------------------*/
-
-static int
-ohci_pci_suspend (struct pci_dev *dev, u32 state)
-{
- ohci_t *ohci = pci_get_drvdata(dev);
- unsigned long flags;
- u16 cmd;
-
- if ((ohci->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_OPER) {
- dbg ("can't suspend usb-%s (state is %s)", dev->slot_name,
- hcfs2string (ohci->hc_control & OHCI_CTRL_HCFS));
- return -EIO;
- }
-
- /* act as if usb suspend can always be used */
- info ("USB suspend: usb-%s", dev->slot_name);
- ohci->sleeping = 1;
-
- /* First stop processing */
- spin_lock_irqsave (&usb_ed_lock, flags);
- ohci->hc_control &= ~(OHCI_CTRL_PLE|OHCI_CTRL_CLE|OHCI_CTRL_BLE|OHCI_CTRL_IE);
- writel (ohci->hc_control, &ohci->regs->control);
- writel (OHCI_INTR_SF, &ohci->regs->intrstatus);
- (void) readl (&ohci->regs->intrstatus);
- spin_unlock_irqrestore (&usb_ed_lock, flags);
-
- /* Wait a frame or two */
- mdelay(1);
- if (!readl (&ohci->regs->intrstatus) & OHCI_INTR_SF)
- mdelay (1);
-
-#ifdef CONFIG_PMAC_PBOOK
- if (_machine == _MACH_Pmac)
- disable_irq (ohci->irq);
- /* else, 2.4 assumes shared irqs -- don't disable */
-#endif
- /* Enable remote wakeup */
- writel (readl(&ohci->regs->intrenable) | OHCI_INTR_RD, &ohci->regs->intrenable);
-
- /* Suspend chip and let things settle down a bit */
- ohci->hc_control = OHCI_USB_SUSPEND;
- writel (ohci->hc_control, &ohci->regs->control);
- (void) readl (&ohci->regs->control);
- mdelay (500); /* No schedule here ! */
- switch (readl (&ohci->regs->control) & OHCI_CTRL_HCFS) {
- case OHCI_USB_RESET:
- dbg("Bus in reset phase ???");
- break;
- case OHCI_USB_RESUME:
- dbg("Bus in resume phase ???");
- break;
- case OHCI_USB_OPER:
- dbg("Bus in operational phase ???");
- break;
- case OHCI_USB_SUSPEND:
- dbg("Bus suspended");
- break;
- }
- /* In some rare situations, Apple's OHCI have happily trashed
- * memory during sleep. We disable it's bus master bit during
- * suspend
- */
- pci_read_config_word (dev, PCI_COMMAND, &cmd);
- cmd &= ~PCI_COMMAND_MASTER;
- pci_write_config_word (dev, PCI_COMMAND, cmd);
-#ifdef CONFIG_PMAC_PBOOK
- {
- struct device_node *of_node;
-
- /* Disable USB PAD & cell clock */
- of_node = pci_device_to_OF_node (ohci->ohci_dev);
- if (of_node)
- pmac_call_feature(PMAC_FTR_USB_ENABLE, of_node, 0, 0);
- }
-#endif
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int
-ohci_pci_resume (struct pci_dev *dev)
-{
- ohci_t *ohci = pci_get_drvdata(dev);
- int temp;
- unsigned long flags;
-
- /* guard against multiple resumes */
- atomic_inc (&ohci->resume_count);
- if (atomic_read (&ohci->resume_count) != 1) {
- err ("concurrent PCI resumes for usb-%s", dev->slot_name);
- atomic_dec (&ohci->resume_count);
- return 0;
- }
-
-#ifdef CONFIG_PMAC_PBOOK
- {
- struct device_node *of_node;
-
- /* Re-enable USB PAD & cell clock */
- of_node = pci_device_to_OF_node (ohci->ohci_dev);
- if (of_node)
- pmac_call_feature(PMAC_FTR_USB_ENABLE, of_node, 0, 1);
- }
-#endif
-
- /* did we suspend, or were we powered off? */
- ohci->hc_control = readl (&ohci->regs->control);
- temp = ohci->hc_control & OHCI_CTRL_HCFS;
-
-#ifdef DEBUG
- /* the registers may look crazy here */
- ohci_dump_status (ohci);
-#endif
-
- /* Re-enable bus mastering */
- pci_set_master(ohci->ohci_dev);
-
- switch (temp) {
-
- case OHCI_USB_RESET: // lost power
- info ("USB restart: usb-%s", dev->slot_name);
- hc_restart (ohci);
- break;
-
- case OHCI_USB_SUSPEND: // host wakeup
- case OHCI_USB_RESUME: // remote wakeup
- info ("USB continue: usb-%s from %s wakeup", dev->slot_name,
- (temp == OHCI_USB_SUSPEND)
- ? "host" : "remote");
- ohci->hc_control = OHCI_USB_RESUME;
- writel (ohci->hc_control, &ohci->regs->control);
- (void) readl (&ohci->regs->control);
- mdelay (20); /* no schedule here ! */
- /* Some controllers (lucent) need a longer delay here */
- mdelay (15);
- temp = readl (&ohci->regs->control);
- temp = ohci->hc_control & OHCI_CTRL_HCFS;
- if (temp != OHCI_USB_RESUME) {
- err ("controller usb-%s won't resume", dev->slot_name);
- ohci->disabled = 1;
- return -EIO;
- }
-
- /* Some chips likes being resumed first */
- writel (OHCI_USB_OPER, &ohci->regs->control);
- (void) readl (&ohci->regs->control);
- mdelay (3);
-
- /* Then re-enable operations */
- spin_lock_irqsave (&usb_ed_lock, flags);
- ohci->disabled = 0;
- ohci->sleeping = 0;
- ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER;
- if (!ohci->ed_rm_list[0] && !ohci->ed_rm_list[1]) {
- if (ohci->ed_controltail)
- ohci->hc_control |= OHCI_CTRL_CLE;
- if (ohci->ed_bulktail)
- ohci->hc_control |= OHCI_CTRL_BLE;
- }
- writel (ohci->hc_control, &ohci->regs->control);
- writel (OHCI_INTR_SF, &ohci->regs->intrstatus);
- writel (OHCI_INTR_SF, &ohci->regs->intrenable);
- /* Check for a pending done list */
- writel (OHCI_INTR_WDH, &ohci->regs->intrdisable);
- (void) readl (&ohci->regs->intrdisable);
- spin_unlock_irqrestore (&usb_ed_lock, flags);
-#ifdef CONFIG_PMAC_PBOOK
- if (_machine == _MACH_Pmac)
- enable_irq (ohci->irq);
-#endif
- if (ohci->hcca->done_head)
- dl_done_list (ohci, dl_reverse_done_list (ohci));
- writel (OHCI_INTR_WDH, &ohci->regs->intrenable);
- writel (OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */
- writel (OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */
- break;
-
- default:
- warn ("odd PCI resume for usb-%s", dev->slot_name);
- }
-
- /* controller is operational, extra resumes are harmless */
- atomic_dec (&ohci->resume_count);
-
- return 0;
-}
-
-#endif /* CONFIG_PM */
-
-
-/*-------------------------------------------------------------------------*/
-
-static const struct pci_device_id __devinitdata ohci_pci_ids [] = { {
-
- /*
- * AMD-756 [Viper] USB has a serious erratum when used with
- * lowspeed devices like mice.
- */
- vendor: 0x1022,
- device: 0x740c,
- subvendor: PCI_ANY_ID,
- subdevice: PCI_ANY_ID,
-
- driver_data: OHCI_QUIRK_AMD756,
-
-} , {
-
- /* handle any USB OHCI controller */
- class: ((PCI_CLASS_SERIAL_USB << 8) | 0x10),
- class_mask: ~0,
-
- /* no matter who makes it */
- vendor: PCI_ANY_ID,
- device: PCI_ANY_ID,
- subvendor: PCI_ANY_ID,
- subdevice: PCI_ANY_ID,
-
- }, { /* end: all zeroes */ }
-};
-
-MODULE_DEVICE_TABLE (pci, ohci_pci_ids);
-
-static struct pci_driver ohci_pci_driver = {
- name: "usb-ohci",
- id_table: &ohci_pci_ids [0],
-
- probe: ohci_pci_probe,
- remove: __devexit_p(ohci_pci_remove),
-
-#ifdef CONFIG_PM
- suspend: ohci_pci_suspend,
- resume: ohci_pci_resume,
-#endif /* PM */
-};
-
-
-/*-------------------------------------------------------------------------*/
-
-static int __init ohci_hcd_init (void)
-{
- return pci_module_init (&ohci_pci_driver);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void __exit ohci_hcd_cleanup (void)
-{
- pci_unregister_driver (&ohci_pci_driver);
-}
-
-module_init (ohci_hcd_init);
-module_exit (ohci_hcd_cleanup);
-
-
-MODULE_AUTHOR( DRIVER_AUTHOR );
-MODULE_DESCRIPTION( DRIVER_DESC );
-MODULE_LICENSE("GPL");
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)