blob: df1af0bcfe994968000b289b5ce4148095914130 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Alan Stern578333a2011-06-15 16:32:46 -04002 * Open Host Controller Interface (OHCI) driver for USB.
3 *
4 * Maintainer: Alan Stern <stern@rowland.harvard.edu>
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 *
6 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
7 * (C) Copyright 2000-2004 David Brownell <dbrownell@users.sourceforge.net>
David Brownelldd9048a2006-12-05 03:18:31 -08008 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 * [ Initialisation is based on Linus' ]
10 * [ uhci code and gregs ohci fragments ]
11 * [ (C) Copyright 1999 Linus Torvalds ]
12 * [ (C) Copyright 1999 Gregory P. Smith]
David Brownelldd9048a2006-12-05 03:18:31 -080013 *
14 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070015 * OHCI is the main "non-Intel/VIA" standard for USB 1.1 host controller
16 * interfaces (though some non-x86 Intel chips use it). It supports
17 * smarter hardware than UHCI. A download link for the spec available
18 * through the http://www.usb.org website.
19 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070020 * This file is licenced under the GPL.
21 */
David Brownelldd9048a2006-12-05 03:18:31 -080022
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#include <linux/module.h>
24#include <linux/moduleparam.h>
25#include <linux/pci.h>
26#include <linux/kernel.h>
27#include <linux/delay.h>
28#include <linux/ioport.h>
29#include <linux/sched.h>
30#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include <linux/errno.h>
32#include <linux/init.h>
33#include <linux/timer.h>
34#include <linux/list.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#include <linux/usb.h>
David Brownell3a16f7b2006-06-29 12:27:23 -070036#include <linux/usb/otg.h>
Eric Lescouet27729aa2010-04-24 23:21:52 +020037#include <linux/usb/hcd.h>
David Brownelldd9048a2006-12-05 03:18:31 -080038#include <linux/dma-mapping.h>
David Brownellf4df0e32005-04-23 12:49:16 -070039#include <linux/dmapool.h>
Michael Hanselmannd576bb92007-05-31 23:34:27 +020040#include <linux/workqueue.h>
Tony Jones684c19e2007-09-11 14:07:31 -070041#include <linux/debugfs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
43#include <asm/io.h>
44#include <asm/irq.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#include <asm/unaligned.h>
46#include <asm/byteorder.h>
47
48
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#define DRIVER_AUTHOR "Roman Weissgaerber, David Brownell"
50#define DRIVER_DESC "USB 1.1 'Open' Host Controller (OHCI) Driver"
51
52/*-------------------------------------------------------------------------*/
53
Benjamin Herrenschmidt8de98402005-11-25 09:59:46 +110054#undef OHCI_VERBOSE_DEBUG /* not always helpful */
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
56/* For initializing controller (mask in an HCFS mode too) */
David Brownelld4139842006-08-04 11:31:55 -070057#define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
Linus Torvalds1da177e2005-04-16 15:20:36 -070058#define OHCI_INTR_INIT \
David Brownelld4139842006-08-04 11:31:55 -070059 (OHCI_INTR_MIE | OHCI_INTR_RHSC | OHCI_INTR_UE \
60 | OHCI_INTR_RD | OHCI_INTR_WDH)
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
62#ifdef __hppa__
63/* On PA-RISC, PDC can leave IR set incorrectly; ignore it there. */
64#define IR_DISABLE
65#endif
66
67#ifdef CONFIG_ARCH_OMAP
68/* OMAP doesn't support IR (no SMM; not needed) */
69#define IR_DISABLE
70#endif
71
72/*-------------------------------------------------------------------------*/
73
74static const char hcd_name [] = "ohci_hcd";
75
David Brownelld4139842006-08-04 11:31:55 -070076#define STATECHANGE_DELAY msecs_to_jiffies(300)
77
Linus Torvalds1da177e2005-04-16 15:20:36 -070078#include "ohci.h"
Andiry Xuad935622011-03-01 14:57:05 +080079#include "pci-quirks.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070080
81static void ohci_dump (struct ohci_hcd *ohci, int verbose);
82static int ohci_init (struct ohci_hcd *ohci);
83static void ohci_stop (struct usb_hcd *hcd);
David Brownellda6fb572007-10-24 17:23:42 -070084
85#if defined(CONFIG_PM) || defined(CONFIG_PCI)
Michael Hanselmannd576bb92007-05-31 23:34:27 +020086static int ohci_restart (struct ohci_hcd *ohci);
David Brownellda6fb572007-10-24 17:23:42 -070087#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070088
Libin Yangab1666c2008-08-08 15:03:31 +080089#ifdef CONFIG_PCI
Libin Yanga1f17a872009-11-04 14:55:18 +080090static void sb800_prefetch(struct ohci_hcd *ohci, int on);
Libin Yangab1666c2008-08-08 15:03:31 +080091#else
Libin Yanga1f17a872009-11-04 14:55:18 +080092static inline void sb800_prefetch(struct ohci_hcd *ohci, int on)
93{
94 return;
95}
Libin Yangab1666c2008-08-08 15:03:31 +080096#endif
97
98
Linus Torvalds1da177e2005-04-16 15:20:36 -070099#include "ohci-hub.c"
100#include "ohci-dbg.c"
101#include "ohci-mem.c"
102#include "ohci-q.c"
103
104
105/*
106 * On architectures with edge-triggered interrupts we must never return
107 * IRQ_NONE.
108 */
109#if defined(CONFIG_SA1111) /* ... or other edge-triggered systems */
110#define IRQ_NOTMINE IRQ_HANDLED
111#else
112#define IRQ_NOTMINE IRQ_NONE
113#endif
114
115
116/* Some boards misreport power switching/overcurrent */
Rusty Russell90ab5ee2012-01-13 09:32:20 +1030117static bool distrust_firmware = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118module_param (distrust_firmware, bool, 0);
119MODULE_PARM_DESC (distrust_firmware,
120 "true to distrust firmware power/overcurrent setup");
121
122/* Some boards leave IR set wrongly, since they fail BIOS/SMM handshakes */
Rusty Russell90ab5ee2012-01-13 09:32:20 +1030123static bool no_handshake = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124module_param (no_handshake, bool, 0);
125MODULE_PARM_DESC (no_handshake, "true (not default) disables BIOS handshake");
126
127/*-------------------------------------------------------------------------*/
128
129/*
130 * queue up an urb for anything except the root hub
131 */
132static int ohci_urb_enqueue (
133 struct usb_hcd *hcd,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 struct urb *urb,
Al Viro55016f12005-10-21 03:21:58 -0400135 gfp_t mem_flags
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136) {
137 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
138 struct ed *ed;
139 urb_priv_t *urb_priv;
140 unsigned int pipe = urb->pipe;
141 int i, size = 0;
142 unsigned long flags;
143 int retval = 0;
David Brownelldd9048a2006-12-05 03:18:31 -0800144
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145#ifdef OHCI_VERBOSE_DEBUG
Alan Stern55d84962007-08-24 15:40:34 -0400146 urb_print(urb, "SUB", usb_pipein(pipe), -EINPROGRESS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147#endif
David Brownelldd9048a2006-12-05 03:18:31 -0800148
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149 /* every endpoint has a ed, locate and maybe (re)initialize it */
Alan Sterne9df41c2007-08-08 11:48:02 -0400150 if (! (ed = ed_get (ohci, urb->ep, urb->dev, pipe, urb->interval)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 return -ENOMEM;
152
153 /* for the private part of the URB we need the number of TDs (size) */
154 switch (ed->type) {
155 case PIPE_CONTROL:
156 /* td_submit_urb() doesn't yet handle these */
157 if (urb->transfer_buffer_length > 4096)
158 return -EMSGSIZE;
159
160 /* 1 TD for setup, 1 for ACK, plus ... */
161 size = 2;
162 /* FALLTHROUGH */
163 // case PIPE_INTERRUPT:
164 // case PIPE_BULK:
165 default:
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300166 /* one TD for every 4096 Bytes (can be up to 8K) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 size += urb->transfer_buffer_length / 4096;
168 /* ... and for any remaining bytes ... */
169 if ((urb->transfer_buffer_length % 4096) != 0)
170 size++;
171 /* ... and maybe a zero length packet to wrap it up */
172 if (size == 0)
173 size++;
174 else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
175 && (urb->transfer_buffer_length
176 % usb_maxpacket (urb->dev, pipe,
177 usb_pipeout (pipe))) == 0)
178 size++;
179 break;
180 case PIPE_ISOCHRONOUS: /* number of packets from URB */
181 size = urb->number_of_packets;
182 break;
183 }
184
185 /* allocate the private part of the URB */
Yoann Padioleaudd00cc42007-07-19 01:49:03 -0700186 urb_priv = kzalloc (sizeof (urb_priv_t) + size * sizeof (struct td *),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 mem_flags);
188 if (!urb_priv)
189 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 INIT_LIST_HEAD (&urb_priv->pending);
191 urb_priv->length = size;
David Brownelldd9048a2006-12-05 03:18:31 -0800192 urb_priv->ed = ed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193
194 /* allocate the TDs (deferring hash chain updates) */
195 for (i = 0; i < size; i++) {
196 urb_priv->td [i] = td_alloc (ohci, mem_flags);
197 if (!urb_priv->td [i]) {
198 urb_priv->length = i;
199 urb_free_priv (ohci, urb_priv);
200 return -ENOMEM;
201 }
David Brownelldd9048a2006-12-05 03:18:31 -0800202 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203
204 spin_lock_irqsave (&ohci->lock, flags);
205
206 /* don't submit to a dead HC */
Alan Stern541c7d42010-06-22 16:39:10 -0400207 if (!HCD_HW_ACCESSIBLE(hcd)) {
Benjamin Herrenschmidt8de98402005-11-25 09:59:46 +1100208 retval = -ENODEV;
209 goto fail;
210 }
Alan Sternb7463c72011-11-17 16:41:56 -0500211 if (ohci->rh_state != OHCI_RH_RUNNING) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 retval = -ENODEV;
213 goto fail;
214 }
Alan Sterne9df41c2007-08-08 11:48:02 -0400215 retval = usb_hcd_link_urb_to_ep(hcd, urb);
216 if (retval)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 goto fail;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218
219 /* schedule the ed if needed */
220 if (ed->state == ED_IDLE) {
221 retval = ed_schedule (ohci, ed);
Alan Sterne9df41c2007-08-08 11:48:02 -0400222 if (retval < 0) {
223 usb_hcd_unlink_urb_from_ep(hcd, urb);
224 goto fail;
225 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 if (ed->type == PIPE_ISOCHRONOUS) {
227 u16 frame = ohci_frame_no(ohci);
228
229 /* delay a few frames before the first TD */
230 frame += max_t (u16, 8, ed->interval);
231 frame &= ~(ed->interval - 1);
232 frame |= ed->branch;
233 urb->start_frame = frame;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 }
Alan Stern6a41b4d2012-10-01 10:32:15 -0400235 } else if (ed->type == PIPE_ISOCHRONOUS) {
Alan Sterne19440172013-05-14 13:57:19 -0400236 u16 next = ohci_frame_no(ohci) + 1;
Alan Stern6a41b4d2012-10-01 10:32:15 -0400237 u16 frame = ed->last_iso + ed->interval;
238
239 /* Behind the scheduling threshold? */
240 if (unlikely(tick_before(frame, next))) {
241
242 /* USB_ISO_ASAP: Round up to the first available slot */
243 if (urb->transfer_flags & URB_ISO_ASAP)
244 frame += (next - frame + ed->interval - 1) &
245 -ed->interval;
246
247 /*
248 * Not ASAP: Use the next slot in the stream. If
249 * the entire URB falls before the threshold, fail.
250 */
251 else if (tick_before(frame + ed->interval *
252 (urb->number_of_packets - 1), next)) {
253 retval = -EXDEV;
254 usb_hcd_unlink_urb_from_ep(hcd, urb);
255 goto fail;
256 }
257
258 /*
259 * Some OHCI hardware doesn't handle late TDs
260 * correctly. After retiring them it proceeds to
261 * the next ED instead of the next TD. Therefore
262 * we have to omit the late TDs entirely.
263 */
264 urb_priv->td_cnt = DIV_ROUND_UP(next - frame,
265 ed->interval);
266 }
267 urb->start_frame = frame;
268 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269
270 /* fill the TDs and link them to the ed; and
271 * enable that part of the schedule, if needed
272 * and update count of queued periodic urbs
273 */
274 urb->hcpriv = urb_priv;
275 td_submit_urb (ohci, urb);
276
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277fail:
278 if (retval)
279 urb_free_priv (ohci, urb_priv);
280 spin_unlock_irqrestore (&ohci->lock, flags);
281 return retval;
282}
283
284/*
Alan Stern55d84962007-08-24 15:40:34 -0400285 * decouple the URB from the HC queues (TDs, urb_priv).
286 * reporting is always done
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 * asynchronously, and we might be dealing with an urb that's
288 * partially transferred, or an ED with other urbs being unlinked.
289 */
Alan Sterne9df41c2007-08-08 11:48:02 -0400290static int ohci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291{
292 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
293 unsigned long flags;
Alan Sterne9df41c2007-08-08 11:48:02 -0400294 int rc;
David Brownelldd9048a2006-12-05 03:18:31 -0800295
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296#ifdef OHCI_VERBOSE_DEBUG
Alan Stern55d84962007-08-24 15:40:34 -0400297 urb_print(urb, "UNLINK", 1, status);
David Brownelldd9048a2006-12-05 03:18:31 -0800298#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299
300 spin_lock_irqsave (&ohci->lock, flags);
Alan Sterne9df41c2007-08-08 11:48:02 -0400301 rc = usb_hcd_check_unlink_urb(hcd, urb, status);
302 if (rc) {
303 ; /* Do nothing */
Alan Sternb7463c72011-11-17 16:41:56 -0500304 } else if (ohci->rh_state == OHCI_RH_RUNNING) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 urb_priv_t *urb_priv;
306
307 /* Unless an IRQ completed the unlink while it was being
308 * handed to us, flag it for unlink and giveback, and force
309 * some upcoming INTR_SF to call finish_unlinks()
310 */
311 urb_priv = urb->hcpriv;
312 if (urb_priv) {
313 if (urb_priv->ed->state == ED_OPER)
314 start_ed_unlink (ohci, urb_priv->ed);
315 }
316 } else {
317 /*
318 * with HC dead, we won't respect hc queue pointers
319 * any more ... just clean up every urb's memory.
320 */
321 if (urb->hcpriv)
Alan Stern55d84962007-08-24 15:40:34 -0400322 finish_urb(ohci, urb, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 }
324 spin_unlock_irqrestore (&ohci->lock, flags);
Alan Sterne9df41c2007-08-08 11:48:02 -0400325 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326}
327
328/*-------------------------------------------------------------------------*/
329
330/* frees config/altsetting state for endpoints,
331 * including ED memory, dummy TD, and bulk/intr data toggle
332 */
333
334static void
335ohci_endpoint_disable (struct usb_hcd *hcd, struct usb_host_endpoint *ep)
336{
337 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
338 unsigned long flags;
339 struct ed *ed = ep->hcpriv;
340 unsigned limit = 1000;
341
342 /* ASSERT: any requests/urbs are being unlinked */
343 /* ASSERT: nobody can be submitting urbs for this any more */
344
345 if (!ed)
346 return;
347
348rescan:
349 spin_lock_irqsave (&ohci->lock, flags);
350
Alan Sternb7463c72011-11-17 16:41:56 -0500351 if (ohci->rh_state != OHCI_RH_RUNNING) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352sanitize:
353 ed->state = ED_IDLE;
Mike Nuss89a0fd12007-08-01 13:24:30 -0700354 if (quirk_zfmicro(ohci) && ed->type == PIPE_INTERRUPT)
355 ohci->eds_scheduled--;
David Howells7d12e782006-10-05 14:55:46 +0100356 finish_unlinks (ohci, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 }
358
359 switch (ed->state) {
360 case ED_UNLINK: /* wait for hw to finish? */
361 /* major IRQ delivery trouble loses INTR_SF too... */
362 if (limit-- == 0) {
Mike Nuss89a0fd12007-08-01 13:24:30 -0700363 ohci_warn(ohci, "ED unlink timeout\n");
364 if (quirk_zfmicro(ohci)) {
365 ohci_warn(ohci, "Attempting ZF TD recovery\n");
366 ohci->ed_to_check = ed;
367 ohci->zf_delay = 2;
368 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 goto sanitize;
370 }
371 spin_unlock_irqrestore (&ohci->lock, flags);
Nishanth Aravamudan22c43862005-08-15 11:30:11 -0700372 schedule_timeout_uninterruptible(1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 goto rescan;
374 case ED_IDLE: /* fully unlinked */
375 if (list_empty (&ed->td_list)) {
376 td_free (ohci, ed->dummy);
377 ed_free (ohci, ed);
378 break;
379 }
380 /* else FALL THROUGH */
381 default:
382 /* caller was supposed to have unlinked any requests;
383 * that's not our job. can't recover; must leak ed.
384 */
385 ohci_err (ohci, "leak ed %p (#%02x) state %d%s\n",
386 ed, ep->desc.bEndpointAddress, ed->state,
387 list_empty (&ed->td_list) ? "" : " (has tds)");
388 td_free (ohci, ed->dummy);
389 break;
390 }
391 ep->hcpriv = NULL;
392 spin_unlock_irqrestore (&ohci->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393}
394
395static int ohci_get_frame (struct usb_hcd *hcd)
396{
397 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
398
399 return ohci_frame_no(ohci);
400}
401
402static void ohci_usb_reset (struct ohci_hcd *ohci)
403{
404 ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
405 ohci->hc_control &= OHCI_CTRL_RWC;
406 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
Alan Sternb7463c72011-11-17 16:41:56 -0500407 ohci->rh_state = OHCI_RH_HALTED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408}
409
Aleksey Gorelov64a21d02006-08-08 17:24:08 -0700410/* ohci_shutdown forcibly disables IRQs and DMA, helping kexec and
David Brownellf4df0e32005-04-23 12:49:16 -0700411 * other cases where the next software may expect clean state from the
412 * "firmware". this is bus-neutral, unlike shutdown() methods.
413 */
Aleksey Gorelov64a21d02006-08-08 17:24:08 -0700414static void
415ohci_shutdown (struct usb_hcd *hcd)
David Brownellf4df0e32005-04-23 12:49:16 -0700416{
417 struct ohci_hcd *ohci;
418
Aleksey Gorelov64a21d02006-08-08 17:24:08 -0700419 ohci = hcd_to_ohci (hcd);
Alan Sternc6187592011-11-17 16:41:45 -0500420 ohci_writel(ohci, (u32) ~0, &ohci->regs->intrdisable);
Alan Stern3df71692010-09-10 16:37:05 -0400421
Alan Sternc6187592011-11-17 16:41:45 -0500422 /* Software reset, after which the controller goes into SUSPEND */
423 ohci_writel(ohci, OHCI_HCR, &ohci->regs->cmdstatus);
424 ohci_readl(ohci, &ohci->regs->cmdstatus); /* flush the writes */
425 udelay(10);
Alan Stern3df71692010-09-10 16:37:05 -0400426
Alan Sternc6187592011-11-17 16:41:45 -0500427 ohci_writel(ohci, ohci->fminterval, &ohci->regs->fminterval);
David Brownellf4df0e32005-04-23 12:49:16 -0700428}
429
Mike Nuss89a0fd12007-08-01 13:24:30 -0700430static int check_ed(struct ohci_hcd *ohci, struct ed *ed)
431{
432 return (hc32_to_cpu(ohci, ed->hwINFO) & ED_IN) != 0
433 && (hc32_to_cpu(ohci, ed->hwHeadP) & TD_MASK)
434 == (hc32_to_cpu(ohci, ed->hwTailP) & TD_MASK)
435 && !list_empty(&ed->td_list);
436}
437
438/* ZF Micro watchdog timer callback. The ZF Micro chipset sometimes completes
439 * an interrupt TD but neglects to add it to the donelist. On systems with
440 * this chipset, we need to periodically check the state of the queues to look
441 * for such "lost" TDs.
442 */
443static void unlink_watchdog_func(unsigned long _ohci)
444{
David Brownellda6fb572007-10-24 17:23:42 -0700445 unsigned long flags;
Mike Nuss89a0fd12007-08-01 13:24:30 -0700446 unsigned max;
447 unsigned seen_count = 0;
448 unsigned i;
449 struct ed **seen = NULL;
450 struct ohci_hcd *ohci = (struct ohci_hcd *) _ohci;
451
452 spin_lock_irqsave(&ohci->lock, flags);
453 max = ohci->eds_scheduled;
454 if (!max)
455 goto done;
456
457 if (ohci->ed_to_check)
458 goto out;
459
460 seen = kcalloc(max, sizeof *seen, GFP_ATOMIC);
461 if (!seen)
462 goto out;
463
464 for (i = 0; i < NUM_INTS; i++) {
465 struct ed *ed = ohci->periodic[i];
466
467 while (ed) {
468 unsigned temp;
469
470 /* scan this branch of the periodic schedule tree */
471 for (temp = 0; temp < seen_count; temp++) {
472 if (seen[temp] == ed) {
473 /* we've checked it and what's after */
474 ed = NULL;
475 break;
476 }
477 }
478 if (!ed)
479 break;
480 seen[seen_count++] = ed;
481 if (!check_ed(ohci, ed)) {
482 ed = ed->ed_next;
483 continue;
484 }
485
486 /* HC's TD list is empty, but HCD sees at least one
487 * TD that's not been sent through the donelist.
488 */
489 ohci->ed_to_check = ed;
490 ohci->zf_delay = 2;
491
492 /* The HC may wait until the next frame to report the
493 * TD as done through the donelist and INTR_WDH. (We
494 * just *assume* it's not a multi-TD interrupt URB;
495 * those could defer the IRQ more than one frame, using
496 * DI...) Check again after the next INTR_SF.
497 */
498 ohci_writel(ohci, OHCI_INTR_SF,
499 &ohci->regs->intrstatus);
500 ohci_writel(ohci, OHCI_INTR_SF,
501 &ohci->regs->intrenable);
502
503 /* flush those writes */
504 (void) ohci_readl(ohci, &ohci->regs->control);
505
506 goto out;
507 }
508 }
509out:
510 kfree(seen);
511 if (ohci->eds_scheduled)
Richard Kennedy9cebcdc2008-03-28 14:50:30 -0700512 mod_timer(&ohci->unlink_watchdog, round_jiffies(jiffies + HZ));
Mike Nuss89a0fd12007-08-01 13:24:30 -0700513done:
514 spin_unlock_irqrestore(&ohci->lock, flags);
515}
516
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517/*-------------------------------------------------------------------------*
518 * HC functions
519 *-------------------------------------------------------------------------*/
520
521/* init memory, and kick BIOS/SMM off */
522
523static int ohci_init (struct ohci_hcd *ohci)
524{
525 int ret;
David Brownell6a9062f2006-01-23 15:28:07 -0800526 struct usb_hcd *hcd = ohci_to_hcd(ohci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527
Dmitry Baryshkov1133cd82008-07-06 23:35:01 +0400528 if (distrust_firmware)
529 ohci->flags |= OHCI_QUIRK_HUB_POWER;
530
Alan Sternb7463c72011-11-17 16:41:56 -0500531 ohci->rh_state = OHCI_RH_HALTED;
David Brownell6a9062f2006-01-23 15:28:07 -0800532 ohci->regs = hcd->regs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533
David Brownell6a9062f2006-01-23 15:28:07 -0800534 /* REVISIT this BIOS handshake is now moved into PCI "quirks", and
535 * was never needed for most non-PCI systems ... remove the code?
536 */
537
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538#ifndef IR_DISABLE
539 /* SMM owns the HC? not for long! */
540 if (!no_handshake && ohci_readl (ohci,
541 &ohci->regs->control) & OHCI_CTRL_IR) {
542 u32 temp;
543
544 ohci_dbg (ohci, "USB HC TakeOver from BIOS/SMM\n");
545
546 /* this timeout is arbitrary. we make it long, so systems
547 * depending on usb keyboards may be usable even if the
548 * BIOS/SMM code seems pretty broken.
549 */
550 temp = 500; /* arbitrary: five seconds */
551
552 ohci_writel (ohci, OHCI_INTR_OC, &ohci->regs->intrenable);
553 ohci_writel (ohci, OHCI_OCR, &ohci->regs->cmdstatus);
554 while (ohci_readl (ohci, &ohci->regs->control) & OHCI_CTRL_IR) {
555 msleep (10);
556 if (--temp == 0) {
557 ohci_err (ohci, "USB HC takeover failed!"
558 " (BIOS/SMM bug)\n");
559 return -EBUSY;
560 }
561 }
562 ohci_usb_reset (ohci);
563 }
564#endif
565
566 /* Disable HC interrupts */
567 ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
David Brownell6a9062f2006-01-23 15:28:07 -0800568
569 /* flush the writes, and save key bits like RWC */
570 if (ohci_readl (ohci, &ohci->regs->control) & OHCI_CTRL_RWC)
571 ohci->hc_control |= OHCI_CTRL_RWC;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572
David Brownellfdd13b32005-08-31 11:52:57 -0700573 /* Read the number of ports unless overridden */
574 if (ohci->num_ports == 0)
575 ohci->num_ports = roothub_a(ohci) & RH_A_NDP;
576
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 if (ohci->hcca)
578 return 0;
579
David Brownell6a9062f2006-01-23 15:28:07 -0800580 ohci->hcca = dma_alloc_coherent (hcd->self.controller,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581 sizeof *ohci->hcca, &ohci->hcca_dma, 0);
582 if (!ohci->hcca)
583 return -ENOMEM;
584
585 if ((ret = ohci_mem_init (ohci)) < 0)
David Brownell6a9062f2006-01-23 15:28:07 -0800586 ohci_stop (hcd);
587 else {
David Brownell6a9062f2006-01-23 15:28:07 -0800588 create_debug_files (ohci);
589 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590
591 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592}
593
594/*-------------------------------------------------------------------------*/
595
596/* Start an OHCI controller, set the BUS operational
597 * resets USB and controller
David Brownelldd9048a2006-12-05 03:18:31 -0800598 * enable interrupts
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 */
600static int ohci_run (struct ohci_hcd *ohci)
601{
H Hartley Sweeten96f90a82009-04-22 16:18:59 -0400602 u32 mask, val;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603 int first = ohci->fminterval == 0;
David Brownell6a9062f2006-01-23 15:28:07 -0800604 struct usb_hcd *hcd = ohci_to_hcd(ohci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605
Alan Sternb7463c72011-11-17 16:41:56 -0500606 ohci->rh_state = OHCI_RH_HALTED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607
608 /* boot firmware should have set this up (5.1.1.3.1) */
609 if (first) {
610
H Hartley Sweeten96f90a82009-04-22 16:18:59 -0400611 val = ohci_readl (ohci, &ohci->regs->fminterval);
612 ohci->fminterval = val & 0x3fff;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 if (ohci->fminterval != FI)
614 ohci_dbg (ohci, "fminterval delta %d\n",
615 ohci->fminterval - FI);
616 ohci->fminterval |= FSMP (ohci->fminterval) << 16;
617 /* also: power/overcurrent flags in roothub.a */
618 }
619
Alan Stern6fd90862008-12-17 17:20:38 -0500620 /* Reset USB nearly "by the book". RemoteWakeupConnected has
621 * to be checked in case boot firmware (BIOS/SMM/...) has set up
622 * wakeup in a way the bus isn't aware of (e.g., legacy PCI PM).
623 * If the bus glue detected wakeup capability then it should
Alan Sternbcca06e2009-01-13 11:35:54 -0500624 * already be enabled; if so we'll just enable it again.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 */
Alan Sternbcca06e2009-01-13 11:35:54 -0500626 if ((ohci->hc_control & OHCI_CTRL_RWC) != 0)
627 device_set_wakeup_capable(hcd->self.controller, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628
629 switch (ohci->hc_control & OHCI_CTRL_HCFS) {
630 case OHCI_USB_OPER:
H Hartley Sweeten96f90a82009-04-22 16:18:59 -0400631 val = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 break;
633 case OHCI_USB_SUSPEND:
634 case OHCI_USB_RESUME:
635 ohci->hc_control &= OHCI_CTRL_RWC;
636 ohci->hc_control |= OHCI_USB_RESUME;
H Hartley Sweeten96f90a82009-04-22 16:18:59 -0400637 val = 10 /* msec wait */;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638 break;
639 // case OHCI_USB_RESET:
640 default:
641 ohci->hc_control &= OHCI_CTRL_RWC;
642 ohci->hc_control |= OHCI_USB_RESET;
H Hartley Sweeten96f90a82009-04-22 16:18:59 -0400643 val = 50 /* msec wait */;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644 break;
645 }
646 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
647 // flush the writes
648 (void) ohci_readl (ohci, &ohci->regs->control);
H Hartley Sweeten96f90a82009-04-22 16:18:59 -0400649 msleep(val);
Alan Stern383975d2007-05-04 11:52:40 -0400650
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651 memset (ohci->hcca, 0, sizeof (struct ohci_hcca));
652
653 /* 2msec timelimit here means no irqs/preempt */
654 spin_lock_irq (&ohci->lock);
655
656retry:
657 /* HC Reset requires max 10 us delay */
658 ohci_writel (ohci, OHCI_HCR, &ohci->regs->cmdstatus);
H Hartley Sweeten96f90a82009-04-22 16:18:59 -0400659 val = 30; /* ... allow extra time */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 while ((ohci_readl (ohci, &ohci->regs->cmdstatus) & OHCI_HCR) != 0) {
H Hartley Sweeten96f90a82009-04-22 16:18:59 -0400661 if (--val == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 spin_unlock_irq (&ohci->lock);
663 ohci_err (ohci, "USB HC reset timed out!\n");
664 return -1;
665 }
666 udelay (1);
667 }
668
669 /* now we're in the SUSPEND state ... must go OPERATIONAL
670 * within 2msec else HC enters RESUME
671 *
672 * ... but some hardware won't init fmInterval "by the book"
673 * (SiS, OPTi ...), so reset again instead. SiS doesn't need
674 * this if we write fmInterval after we're OPERATIONAL.
675 * Unclear about ALi, ServerWorks, and others ... this could
676 * easily be a longstanding bug in chip init on Linux.
677 */
678 if (ohci->flags & OHCI_QUIRK_INITRESET) {
679 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
680 // flush those writes
681 (void) ohci_readl (ohci, &ohci->regs->control);
682 }
683
684 /* Tell the controller where the control and bulk lists are
685 * The lists are empty now. */
686 ohci_writel (ohci, 0, &ohci->regs->ed_controlhead);
687 ohci_writel (ohci, 0, &ohci->regs->ed_bulkhead);
688
689 /* a reset clears this */
690 ohci_writel (ohci, (u32) ohci->hcca_dma, &ohci->regs->hcca);
691
692 periodic_reinit (ohci);
693
694 /* some OHCI implementations are finicky about how they init.
695 * bogus values here mean not even enumeration could work.
696 */
697 if ((ohci_readl (ohci, &ohci->regs->fminterval) & 0x3fff0000) == 0
698 || !ohci_readl (ohci, &ohci->regs->periodicstart)) {
699 if (!(ohci->flags & OHCI_QUIRK_INITRESET)) {
700 ohci->flags |= OHCI_QUIRK_INITRESET;
701 ohci_dbg (ohci, "enabling initreset quirk\n");
702 goto retry;
703 }
704 spin_unlock_irq (&ohci->lock);
705 ohci_err (ohci, "init err (%08x %04x)\n",
706 ohci_readl (ohci, &ohci->regs->fminterval),
707 ohci_readl (ohci, &ohci->regs->periodicstart));
708 return -EOVERFLOW;
709 }
710
David Brownelld4139842006-08-04 11:31:55 -0700711 /* use rhsc irqs after khubd is fully initialized */
Alan Stern541c7d42010-06-22 16:39:10 -0400712 set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
David Brownelld4139842006-08-04 11:31:55 -0700713 hcd->uses_new_polling = 1;
714
715 /* start controller operations */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716 ohci->hc_control &= OHCI_CTRL_RWC;
David Brownelld4139842006-08-04 11:31:55 -0700717 ohci->hc_control |= OHCI_CONTROL_INIT | OHCI_USB_OPER;
718 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
Alan Sternb7463c72011-11-17 16:41:56 -0500719 ohci->rh_state = OHCI_RH_RUNNING;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720
721 /* wake on ConnectStatusChange, matching external hubs */
722 ohci_writel (ohci, RH_HS_DRWE, &ohci->regs->roothub.status);
723
724 /* Choose the interrupts we care about now, others later on demand */
725 mask = OHCI_INTR_INIT;
David Brownelld4139842006-08-04 11:31:55 -0700726 ohci_writel (ohci, ~0, &ohci->regs->intrstatus);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727 ohci_writel (ohci, mask, &ohci->regs->intrenable);
728
729 /* handle root hub init quirks ... */
H Hartley Sweeten96f90a82009-04-22 16:18:59 -0400730 val = roothub_a (ohci);
731 val &= ~(RH_A_PSM | RH_A_OCPM);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732 if (ohci->flags & OHCI_QUIRK_SUPERIO) {
733 /* NSC 87560 and maybe others */
H Hartley Sweeten96f90a82009-04-22 16:18:59 -0400734 val |= RH_A_NOCP;
735 val &= ~(RH_A_POTPGT | RH_A_NPS);
736 ohci_writel (ohci, val, &ohci->regs->roothub.a);
Dmitry Baryshkov1133cd82008-07-06 23:35:01 +0400737 } else if ((ohci->flags & OHCI_QUIRK_AMD756) ||
738 (ohci->flags & OHCI_QUIRK_HUB_POWER)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739 /* hub power always on; required for AMD-756 and some
740 * Mac platforms. ganged overcurrent reporting, if any.
741 */
H Hartley Sweeten96f90a82009-04-22 16:18:59 -0400742 val |= RH_A_NPS;
743 ohci_writel (ohci, val, &ohci->regs->roothub.a);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744 }
745 ohci_writel (ohci, RH_HS_LPSC, &ohci->regs->roothub.status);
H Hartley Sweeten96f90a82009-04-22 16:18:59 -0400746 ohci_writel (ohci, (val & RH_A_NPS) ? 0 : RH_B_PPCM,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 &ohci->regs->roothub.b);
748 // flush those writes
749 (void) ohci_readl (ohci, &ohci->regs->control);
750
David Brownelld4139842006-08-04 11:31:55 -0700751 ohci->next_statechange = jiffies + STATECHANGE_DELAY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 spin_unlock_irq (&ohci->lock);
753
754 // POTPGT delay is bits 24-31, in 2 ms units.
H Hartley Sweeten96f90a82009-04-22 16:18:59 -0400755 mdelay ((val >> 23) & 0x1fe);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756
Mike Nuss89a0fd12007-08-01 13:24:30 -0700757 if (quirk_zfmicro(ohci)) {
758 /* Create timer to watch for bad queue state on ZF Micro */
759 setup_timer(&ohci->unlink_watchdog, unlink_watchdog_func,
760 (unsigned long) ohci);
761
762 ohci->eds_scheduled = 0;
763 ohci->ed_to_check = NULL;
764 }
765
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766 ohci_dump (ohci, 1);
767
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 return 0;
769}
770
771/*-------------------------------------------------------------------------*/
772
773/* an interrupt happens */
774
David Howells7d12e782006-10-05 14:55:46 +0100775static irqreturn_t ohci_irq (struct usb_hcd *hcd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776{
777 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
778 struct ohci_regs __iomem *regs = ohci->regs;
Mike Nuss89a0fd12007-08-01 13:24:30 -0700779 int ints;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780
Benjamin Herrenschmidt565227c2007-12-06 13:28:25 -0800781 /* Read interrupt status (and flush pending writes). We ignore the
782 * optimization of checking the LSB of hcca->done_head; it doesn't
783 * work on all systems (edge triggering for OHCI can be a factor).
Mike Nuss89a0fd12007-08-01 13:24:30 -0700784 */
Benjamin Herrenschmidt565227c2007-12-06 13:28:25 -0800785 ints = ohci_readl(ohci, &regs->intrstatus);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786
Benjamin Herrenschmidt565227c2007-12-06 13:28:25 -0800787 /* Check for an all 1's result which is a typical consequence
788 * of dead, unclocked, or unplugged (CardBus...) devices
789 */
790 if (ints == ~(u32)0) {
Alan Sternb7463c72011-11-17 16:41:56 -0500791 ohci->rh_state = OHCI_RH_HALTED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792 ohci_dbg (ohci, "device removed!\n");
Alan Stern69fff592011-05-17 17:27:12 -0400793 usb_hc_died(hcd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794 return IRQ_HANDLED;
Benjamin Herrenschmidt565227c2007-12-06 13:28:25 -0800795 }
796
797 /* We only care about interrupts that are enabled */
798 ints &= ohci_readl(ohci, &regs->intrenable);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799
800 /* interrupt for some other device? */
Alan Sternb7463c72011-11-17 16:41:56 -0500801 if (ints == 0 || unlikely(ohci->rh_state == OHCI_RH_HALTED))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802 return IRQ_NOTMINE;
David Brownelld4139842006-08-04 11:31:55 -0700803
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804 if (ints & OHCI_INTR_UE) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805 // e.g. due to PCI Master/Target Abort
Mike Nuss89a0fd12007-08-01 13:24:30 -0700806 if (quirk_nec(ohci)) {
Michael Hanselmannd576bb92007-05-31 23:34:27 +0200807 /* Workaround for a silicon bug in some NEC chips used
808 * in Apple's PowerBooks. Adapted from Darwin code.
809 */
810 ohci_err (ohci, "OHCI Unrecoverable Error, scheduling NEC chip restart\n");
811
812 ohci_writel (ohci, OHCI_INTR_UE, &regs->intrdisable);
813
814 schedule_work (&ohci->nec_work);
815 } else {
Michael Hanselmannd576bb92007-05-31 23:34:27 +0200816 ohci_err (ohci, "OHCI Unrecoverable Error, disabled\n");
Alan Sternb7463c72011-11-17 16:41:56 -0500817 ohci->rh_state = OHCI_RH_HALTED;
Alan Stern69fff592011-05-17 17:27:12 -0400818 usb_hc_died(hcd);
Michael Hanselmannd576bb92007-05-31 23:34:27 +0200819 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820
821 ohci_dump (ohci, 1);
822 ohci_usb_reset (ohci);
823 }
824
Alan Stern583cead2006-10-24 12:04:22 -0400825 if (ints & OHCI_INTR_RHSC) {
826 ohci_vdbg(ohci, "rhsc\n");
827 ohci->next_statechange = jiffies + STATECHANGE_DELAY;
828 ohci_writel(ohci, OHCI_INTR_RD | OHCI_INTR_RHSC,
829 &regs->intrstatus);
Alan Stern052ac012006-10-27 10:33:11 -0400830
831 /* NOTE: Vendors didn't always make the same implementation
832 * choices for RHSC. Many followed the spec; RHSC triggers
833 * on an edge, like setting and maybe clearing a port status
834 * change bit. With others it's level-triggered, active
835 * until khubd clears all the port status change bits. We'll
836 * always disable it here and rely on polling until khubd
837 * re-enables it.
838 */
839 ohci_writel(ohci, OHCI_INTR_RHSC, &regs->intrdisable);
Alan Stern583cead2006-10-24 12:04:22 -0400840 usb_hcd_poll_rh_status(hcd);
841 }
842
843 /* For connect and disconnect events, we expect the controller
844 * to turn on RHSC along with RD. But for remote wakeup events
845 * this might not happen.
846 */
847 else if (ints & OHCI_INTR_RD) {
848 ohci_vdbg(ohci, "resume detect\n");
849 ohci_writel(ohci, OHCI_INTR_RD, &regs->intrstatus);
Alan Stern541c7d42010-06-22 16:39:10 -0400850 set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
Alan Stern8d1a2432006-09-26 14:46:16 -0400851 if (ohci->autostop) {
852 spin_lock (&ohci->lock);
853 ohci_rh_resume (ohci);
854 spin_unlock (&ohci->lock);
855 } else
David Brownellf197b2c2005-09-22 22:42:53 -0700856 usb_hcd_resume_root_hub(hcd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857 }
858
859 if (ints & OHCI_INTR_WDH) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860 spin_lock (&ohci->lock);
David Howells7d12e782006-10-05 14:55:46 +0100861 dl_done_list (ohci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862 spin_unlock (&ohci->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863 }
David Brownelldd9048a2006-12-05 03:18:31 -0800864
Mike Nuss89a0fd12007-08-01 13:24:30 -0700865 if (quirk_zfmicro(ohci) && (ints & OHCI_INTR_SF)) {
866 spin_lock(&ohci->lock);
867 if (ohci->ed_to_check) {
868 struct ed *ed = ohci->ed_to_check;
869
870 if (check_ed(ohci, ed)) {
871 /* HC thinks the TD list is empty; HCD knows
872 * at least one TD is outstanding
873 */
874 if (--ohci->zf_delay == 0) {
875 struct td *td = list_entry(
876 ed->td_list.next,
877 struct td, td_list);
878 ohci_warn(ohci,
879 "Reclaiming orphan TD %p\n",
880 td);
881 takeback_td(ohci, td);
882 ohci->ed_to_check = NULL;
883 }
884 } else
885 ohci->ed_to_check = NULL;
886 }
887 spin_unlock(&ohci->lock);
888 }
889
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890 /* could track INTR_SO to reduce available PCI/... bandwidth */
891
892 /* handle any pending URB/ED unlinks, leaving INTR_SF enabled
893 * when there's still unlinking to be done (next frame).
894 */
895 spin_lock (&ohci->lock);
896 if (ohci->ed_rm_list)
David Howells7d12e782006-10-05 14:55:46 +0100897 finish_unlinks (ohci, ohci_frame_no(ohci));
Mike Nuss89a0fd12007-08-01 13:24:30 -0700898 if ((ints & OHCI_INTR_SF) != 0
899 && !ohci->ed_rm_list
900 && !ohci->ed_to_check
Alan Sternb7463c72011-11-17 16:41:56 -0500901 && ohci->rh_state == OHCI_RH_RUNNING)
David Brownelldd9048a2006-12-05 03:18:31 -0800902 ohci_writel (ohci, OHCI_INTR_SF, &regs->intrdisable);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903 spin_unlock (&ohci->lock);
904
Alan Sternb7463c72011-11-17 16:41:56 -0500905 if (ohci->rh_state == OHCI_RH_RUNNING) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906 ohci_writel (ohci, ints, &regs->intrstatus);
David Brownelldd9048a2006-12-05 03:18:31 -0800907 ohci_writel (ohci, OHCI_INTR_MIE, &regs->intrenable);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908 // flush those writes
909 (void) ohci_readl (ohci, &ohci->regs->control);
910 }
911
912 return IRQ_HANDLED;
913}
914
915/*-------------------------------------------------------------------------*/
916
917static void ohci_stop (struct usb_hcd *hcd)
David Brownelldd9048a2006-12-05 03:18:31 -0800918{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
920
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 ohci_dump (ohci, 1);
922
Tejun Heo569ff2d2010-12-24 16:14:20 +0100923 if (quirk_nec(ohci))
Tejun Heo43829732012-08-20 14:51:24 -0700924 flush_work(&ohci->nec_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925
926 ohci_usb_reset (ohci);
927 ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
Pete Zaitcev71795c12006-09-18 22:57:22 -0700928 free_irq(hcd->irq, hcd);
Felipe Balbicd704692012-02-29 16:46:23 +0200929 hcd->irq = 0;
Pete Zaitcev71795c12006-09-18 22:57:22 -0700930
Mike Nuss89a0fd12007-08-01 13:24:30 -0700931 if (quirk_zfmicro(ohci))
932 del_timer(&ohci->unlink_watchdog);
Libin Yangab1666c2008-08-08 15:03:31 +0800933 if (quirk_amdiso(ohci))
Andiry Xuad935622011-03-01 14:57:05 +0800934 usb_amd_dev_put();
Mike Nuss89a0fd12007-08-01 13:24:30 -0700935
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936 remove_debug_files (ohci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937 ohci_mem_cleanup (ohci);
938 if (ohci->hcca) {
David Brownelldd9048a2006-12-05 03:18:31 -0800939 dma_free_coherent (hcd->self.controller,
940 sizeof *ohci->hcca,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941 ohci->hcca, ohci->hcca_dma);
942 ohci->hcca = NULL;
943 ohci->hcca_dma = 0;
944 }
945}
946
947/*-------------------------------------------------------------------------*/
948
David Brownellda6fb572007-10-24 17:23:42 -0700949#if defined(CONFIG_PM) || defined(CONFIG_PCI)
950
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951/* must not be called from interrupt context */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952static int ohci_restart (struct ohci_hcd *ohci)
953{
954 int temp;
955 int i;
956 struct urb_priv *priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958 spin_lock_irq(&ohci->lock);
Alan Sternb7463c72011-11-17 16:41:56 -0500959 ohci->rh_state = OHCI_RH_HALTED;
Michael Hanselmannd576bb92007-05-31 23:34:27 +0200960
961 /* Recycle any "live" eds/tds (and urbs). */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962 if (!list_empty (&ohci->pending))
963 ohci_dbg(ohci, "abort schedule...\n");
964 list_for_each_entry (priv, &ohci->pending, pending) {
965 struct urb *urb = priv->td[0]->urb;
966 struct ed *ed = priv->ed;
967
968 switch (ed->state) {
969 case ED_OPER:
970 ed->state = ED_UNLINK;
971 ed->hwINFO |= cpu_to_hc32(ohci, ED_DEQUEUE);
972 ed_deschedule (ohci, ed);
973
974 ed->ed_next = ohci->ed_rm_list;
975 ed->ed_prev = NULL;
976 ohci->ed_rm_list = ed;
977 /* FALLTHROUGH */
978 case ED_UNLINK:
979 break;
980 default:
981 ohci_dbg(ohci, "bogus ed %p state %d\n",
982 ed, ed->state);
983 }
984
Alan Stern55d84962007-08-24 15:40:34 -0400985 if (!urb->unlinked)
986 urb->unlinked = -ESHUTDOWN;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987 }
David Howells7d12e782006-10-05 14:55:46 +0100988 finish_unlinks (ohci, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700989 spin_unlock_irq(&ohci->lock);
990
991 /* paranoia, in case that didn't work: */
992
993 /* empty the interrupt branches */
994 for (i = 0; i < NUM_INTS; i++) ohci->load [i] = 0;
995 for (i = 0; i < NUM_INTS; i++) ohci->hcca->int_table [i] = 0;
David Brownelldd9048a2006-12-05 03:18:31 -0800996
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997 /* no EDs to remove */
998 ohci->ed_rm_list = NULL;
999
David Brownelldd9048a2006-12-05 03:18:31 -08001000 /* empty control and bulk lists */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001 ohci->ed_controltail = NULL;
1002 ohci->ed_bulktail = NULL;
1003
1004 if ((temp = ohci_run (ohci)) < 0) {
1005 ohci_err (ohci, "can't restart, %d\n", temp);
1006 return temp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007 }
Alan Stern383975d2007-05-04 11:52:40 -04001008 ohci_dbg(ohci, "restart complete\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009 return 0;
1010}
Michael Hanselmannd576bb92007-05-31 23:34:27 +02001011
David Brownellda6fb572007-10-24 17:23:42 -07001012#endif
1013
Florian Fainellicd1965d2012-10-08 15:11:27 +02001014#ifdef CONFIG_PM
1015
1016static int __maybe_unused ohci_suspend(struct usb_hcd *hcd, bool do_wakeup)
1017{
1018 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
1019 unsigned long flags;
Florian Fainellicd1965d2012-10-08 15:11:27 +02001020
Florian Fainellid4ae47d2012-10-08 15:11:28 +02001021 /* Disable irq emission and mark HW unaccessible. Use
Florian Fainellicd1965d2012-10-08 15:11:27 +02001022 * the spinlock to properly synchronize with possible pending
1023 * RH suspend or resume activity.
1024 */
1025 spin_lock_irqsave (&ohci->lock, flags);
Florian Fainellicd1965d2012-10-08 15:11:27 +02001026 ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
1027 (void)ohci_readl(ohci, &ohci->regs->intrdisable);
1028
1029 clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
Florian Fainellicd1965d2012-10-08 15:11:27 +02001030 spin_unlock_irqrestore (&ohci->lock, flags);
1031
Florian Fainellid4ae47d2012-10-08 15:11:28 +02001032 return 0;
Florian Fainellicd1965d2012-10-08 15:11:27 +02001033}
1034
1035
1036static int __maybe_unused ohci_resume(struct usb_hcd *hcd, bool hibernated)
1037{
Florian Fainellicfa49b42012-10-08 15:11:29 +02001038 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
1039 int port;
1040 bool need_reinit = false;
1041
Florian Fainellicd1965d2012-10-08 15:11:27 +02001042 set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
1043
1044 /* Make sure resume from hibernation re-enumerates everything */
1045 if (hibernated)
Florian Fainellicfa49b42012-10-08 15:11:29 +02001046 ohci_usb_reset(ohci);
Florian Fainellicd1965d2012-10-08 15:11:27 +02001047
Florian Fainellicfa49b42012-10-08 15:11:29 +02001048 /* See if the controller is already running or has been reset */
1049 ohci->hc_control = ohci_readl(ohci, &ohci->regs->control);
1050 if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) {
1051 need_reinit = true;
1052 } else {
1053 switch (ohci->hc_control & OHCI_CTRL_HCFS) {
1054 case OHCI_USB_OPER:
1055 case OHCI_USB_RESET:
1056 need_reinit = true;
1057 }
1058 }
1059
1060 /* If needed, reinitialize and suspend the root hub */
1061 if (need_reinit) {
1062 spin_lock_irq(&ohci->lock);
1063 ohci_rh_resume(ohci);
1064 ohci_rh_suspend(ohci, 0);
1065 spin_unlock_irq(&ohci->lock);
1066 }
1067
1068 /* Normally just turn on port power and enable interrupts */
1069 else {
1070 ohci_dbg(ohci, "powerup ports\n");
1071 for (port = 0; port < ohci->num_ports; port++)
1072 ohci_writel(ohci, RH_PS_PPS,
1073 &ohci->regs->roothub.portstatus[port]);
1074
1075 ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrenable);
1076 ohci_readl(ohci, &ohci->regs->intrenable);
1077 msleep(20);
1078 }
1079
1080 usb_hcd_resume_root_hub(hcd);
1081
Florian Fainellicd1965d2012-10-08 15:11:27 +02001082 return 0;
1083}
1084
1085#endif
1086
Michael Hanselmannd576bb92007-05-31 23:34:27 +02001087/*-------------------------------------------------------------------------*/
1088
Linus Torvalds1da177e2005-04-16 15:20:36 -07001089MODULE_AUTHOR (DRIVER_AUTHOR);
Alan Stern2b70f072008-10-02 11:47:15 -04001090MODULE_DESCRIPTION(DRIVER_DESC);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001091MODULE_LICENSE ("GPL");
1092
1093#ifdef CONFIG_PCI
1094#include "ohci-pci.c"
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001095#define PCI_DRIVER ohci_pci_driver
Linus Torvalds1da177e2005-04-16 15:20:36 -07001096#endif
1097
Eric Miao6381fad2008-06-02 10:05:30 +08001098#if defined(CONFIG_ARCH_SA1100) && defined(CONFIG_SA1111)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099#include "ohci-sa1111.c"
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001100#define SA1111_DRIVER ohci_hcd_sa1111_driver
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101#endif
1102
Kukjin Kimb130d5c2012-02-03 14:29:23 +09001103#if defined(CONFIG_ARCH_S3C24XX) || defined(CONFIG_ARCH_S3C64XX)
Ben Dooks3eb0c5f2005-07-29 12:18:03 -07001104#include "ohci-s3c2410.c"
Arnd Bergmann80978042013-04-25 19:29:04 +02001105#define S3C2410_PLATFORM_DRIVER ohci_hcd_s3c2410_driver
Ben Dooks3eb0c5f2005-07-29 12:18:03 -07001106#endif
1107
Jingoo Han62194242011-12-23 11:20:54 +09001108#ifdef CONFIG_USB_OHCI_EXYNOS
1109#include "ohci-exynos.c"
Arnd Bergmann80978042013-04-25 19:29:04 +02001110#define EXYNOS_PLATFORM_DRIVER exynos_ohci_driver
Jingoo Han62194242011-12-23 11:20:54 +09001111#endif
1112
Anand Gadiyar968b4482010-05-10 21:56:12 +05301113#ifdef CONFIG_USB_OHCI_HCD_OMAP1
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114#include "ohci-omap.c"
Anand Gadiyar968b4482010-05-10 21:56:12 +05301115#define OMAP1_PLATFORM_DRIVER ohci_hcd_omap_driver
1116#endif
1117
1118#ifdef CONFIG_USB_OHCI_HCD_OMAP3
1119#include "ohci-omap3.c"
1120#define OMAP3_PLATFORM_DRIVER ohci_hcd_omap3_driver
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121#endif
1122
eric miaoe77ec182007-12-12 09:07:47 +08001123#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001124#include "ohci-pxa27x.c"
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001125#define PLATFORM_DRIVER ohci_hcd_pxa27x_driver
Linus Torvalds1da177e2005-04-16 15:20:36 -07001126#endif
1127
Lennert Buytenheka5b74742006-06-23 23:02:01 +02001128#ifdef CONFIG_ARCH_EP93XX
1129#include "ohci-ep93xx.c"
Arnd Bergmann80978042013-04-25 19:29:04 +02001130#define EP93XX_PLATFORM_DRIVER ohci_hcd_ep93xx_driver
Lennert Buytenheka5b74742006-06-23 23:02:01 +02001131#endif
1132
Andrew Victor58a0cd72006-12-01 14:51:13 +01001133#ifdef CONFIG_ARCH_AT91
Andrew Victor39a269c2006-01-22 10:32:13 -08001134#include "ohci-at91.c"
Arnd Bergmann80978042013-04-25 19:29:04 +02001135#define AT91_PLATFORM_DRIVER ohci_hcd_at91_driver
Andrew Victor39a269c2006-01-22 10:32:13 -08001136#endif
1137
Roland Stigged684f052012-08-26 16:30:37 +02001138#ifdef CONFIG_ARCH_LPC32XX
Roland Stigge32abd562012-03-12 22:54:49 +01001139#include "ohci-nxp.c"
Arnd Bergmann80978042013-04-25 19:29:04 +02001140#define NXP_PLATFORM_DRIVER usb_hcd_nxp_driver
Vitaly Wool60bbfc82006-06-29 18:28:18 +04001141#endif
1142
Sergei Shtylyovefe7daf2010-02-12 23:52:34 +04001143#ifdef CONFIG_ARCH_DAVINCI_DA8XX
1144#include "ohci-da8xx.c"
Arnd Bergmann80978042013-04-25 19:29:04 +02001145#define DAVINCI_PLATFORM_DRIVER ohci_hcd_da8xx_driver
Sergei Shtylyovefe7daf2010-02-12 23:52:34 +04001146#endif
1147
Sylvain Munaut495a6782006-12-13 21:09:55 +01001148#ifdef CONFIG_USB_OHCI_HCD_PPC_OF
1149#include "ohci-ppc-of.c"
1150#define OF_PLATFORM_DRIVER ohci_hcd_ppc_of_driver
1151#endif
1152
Deepak Sikric8c38de2010-11-10 14:33:18 +05301153#ifdef CONFIG_PLAT_SPEAR
1154#include "ohci-spear.c"
Arnd Bergmann80978042013-04-25 19:29:04 +02001155#define SPEAR_PLATFORM_DRIVER spear_ohci_hcd_driver
Deepak Sikric8c38de2010-11-10 14:33:18 +05301156#endif
1157
Geoff Levand6a6c9572007-01-15 20:12:10 -08001158#ifdef CONFIG_PPC_PS3
1159#include "ohci-ps3.c"
Geoff Levand7a4eb7f2007-06-05 20:04:35 -07001160#define PS3_SYSTEM_BUS_DRIVER ps3_ohci_driver
Geoff Levand6a6c9572007-01-15 20:12:10 -08001161#endif
1162
Magnus Dammf54aab62008-01-23 15:58:46 +09001163#ifdef CONFIG_MFD_SM501
1164#include "ohci-sm501.c"
Ben Dooks3ee38d82008-06-08 17:20:11 +01001165#define SM501_OHCI_DRIVER ohci_hcd_sm501_driver
Magnus Dammf54aab62008-01-23 15:58:46 +09001166#endif
1167
Dmitry Baryshkov78c73412008-10-08 16:14:23 +04001168#ifdef CONFIG_MFD_TC6393XB
1169#include "ohci-tmio.c"
1170#define TMIO_OHCI_DRIVER ohci_hcd_tmio_driver
1171#endif
1172
Lars-Peter Clausen22490712010-06-19 04:08:24 +00001173#ifdef CONFIG_MACH_JZ4740
1174#include "ohci-jz4740.c"
1175#define PLATFORM_DRIVER ohci_hcd_jz4740_driver
1176#endif
1177
David Daney1643acc2010-10-08 14:47:52 -07001178#ifdef CONFIG_USB_OCTEON_OHCI
1179#include "ohci-octeon.c"
1180#define PLATFORM_DRIVER ohci_octeon_driver
1181#endif
1182
Chris Metcalf47fc28b2012-05-09 13:58:14 -04001183#ifdef CONFIG_TILE_USB
1184#include "ohci-tilegx.c"
1185#define PLATFORM_DRIVER ohci_hcd_tilegx_driver
1186#endif
1187
Hauke Mehrtensfa3364b2012-03-13 01:04:47 +01001188#ifdef CONFIG_USB_OHCI_HCD_PLATFORM
1189#include "ohci-platform.c"
1190#define PLATFORM_DRIVER ohci_platform_driver
1191#endif
1192
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001193#if !defined(PCI_DRIVER) && \
1194 !defined(PLATFORM_DRIVER) && \
Anand Gadiyar968b4482010-05-10 21:56:12 +05301195 !defined(OMAP1_PLATFORM_DRIVER) && \
1196 !defined(OMAP3_PLATFORM_DRIVER) && \
Sylvain Munaut495a6782006-12-13 21:09:55 +01001197 !defined(OF_PLATFORM_DRIVER) && \
Geoff Levand6a6c9572007-01-15 20:12:10 -08001198 !defined(SA1111_DRIVER) && \
Michael Bueschc604e852007-10-09 23:47:17 -07001199 !defined(PS3_SYSTEM_BUS_DRIVER) && \
Ben Dooks3ee38d82008-06-08 17:20:11 +01001200 !defined(SM501_OHCI_DRIVER) && \
Arnd Bergmann80978042013-04-25 19:29:04 +02001201 !defined(TMIO_OHCI_DRIVER) && \
1202 !defined(S3C2410_PLATFORM_DRIVER) && \
1203 !defined(EXYNOS_PLATFORM_DRIVER) && \
1204 !defined(EP93XX_PLATFORM_DRIVER) && \
1205 !defined(AT91_PLATFORM_DRIVER) && \
1206 !defined(NXP_PLATFORM_DRIVER) && \
1207 !defined(DAVINCI_PLATFORM_DRIVER) && \
1208 !defined(SPEAR_PLATFORM_DRIVER)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001209#error "missing bus glue for ohci-hcd"
1210#endif
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001211
1212static int __init ohci_hcd_mod_init(void)
1213{
1214 int retval = 0;
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001215
1216 if (usb_disabled())
1217 return -ENODEV;
1218
Alan Stern2b70f072008-10-02 11:47:15 -04001219 printk(KERN_INFO "%s: " DRIVER_DESC "\n", hcd_name);
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001220 pr_debug ("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
1221 sizeof (struct ed), sizeof (struct td));
Alan Stern9beeee62008-10-02 11:48:13 -04001222 set_bit(USB_OHCI_LOADED, &usb_hcds_loaded);
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001223
Tony Jones684c19e2007-09-11 14:07:31 -07001224#ifdef DEBUG
Greg Kroah-Hartman485f4f32009-04-24 15:14:38 -07001225 ohci_debug_root = debugfs_create_dir("ohci", usb_debug_root);
Tony Jones684c19e2007-09-11 14:07:31 -07001226 if (!ohci_debug_root) {
1227 retval = -ENOENT;
1228 goto error_debug;
1229 }
1230#endif
1231
Geoff Levand6a6c9572007-01-15 20:12:10 -08001232#ifdef PS3_SYSTEM_BUS_DRIVER
Geoff Levand7a4eb7f2007-06-05 20:04:35 -07001233 retval = ps3_ohci_driver_register(&PS3_SYSTEM_BUS_DRIVER);
1234 if (retval < 0)
1235 goto error_ps3;
Geoff Levand6a6c9572007-01-15 20:12:10 -08001236#endif
1237
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001238#ifdef PLATFORM_DRIVER
1239 retval = platform_driver_register(&PLATFORM_DRIVER);
1240 if (retval < 0)
Benjamin Herrenschmidtde447432007-01-15 20:12:06 -08001241 goto error_platform;
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001242#endif
1243
Anand Gadiyar968b4482010-05-10 21:56:12 +05301244#ifdef OMAP1_PLATFORM_DRIVER
1245 retval = platform_driver_register(&OMAP1_PLATFORM_DRIVER);
1246 if (retval < 0)
1247 goto error_omap1_platform;
1248#endif
1249
1250#ifdef OMAP3_PLATFORM_DRIVER
1251 retval = platform_driver_register(&OMAP3_PLATFORM_DRIVER);
1252 if (retval < 0)
1253 goto error_omap3_platform;
1254#endif
1255
Sylvain Munaut495a6782006-12-13 21:09:55 +01001256#ifdef OF_PLATFORM_DRIVER
Grant Likelyd35fb642011-02-22 21:08:34 -07001257 retval = platform_driver_register(&OF_PLATFORM_DRIVER);
Sylvain Munaut495a6782006-12-13 21:09:55 +01001258 if (retval < 0)
Benjamin Herrenschmidtde447432007-01-15 20:12:06 -08001259 goto error_of_platform;
Sylvain Munaut495a6782006-12-13 21:09:55 +01001260#endif
1261
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001262#ifdef SA1111_DRIVER
1263 retval = sa1111_driver_register(&SA1111_DRIVER);
1264 if (retval < 0)
Benjamin Herrenschmidtde447432007-01-15 20:12:06 -08001265 goto error_sa1111;
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001266#endif
1267
1268#ifdef PCI_DRIVER
1269 retval = pci_register_driver(&PCI_DRIVER);
1270 if (retval < 0)
Benjamin Herrenschmidtde447432007-01-15 20:12:06 -08001271 goto error_pci;
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001272#endif
1273
Ben Dooks3ee38d82008-06-08 17:20:11 +01001274#ifdef SM501_OHCI_DRIVER
1275 retval = platform_driver_register(&SM501_OHCI_DRIVER);
1276 if (retval < 0)
1277 goto error_sm501;
1278#endif
1279
Dmitry Baryshkov78c73412008-10-08 16:14:23 +04001280#ifdef TMIO_OHCI_DRIVER
1281 retval = platform_driver_register(&TMIO_OHCI_DRIVER);
1282 if (retval < 0)
1283 goto error_tmio;
1284#endif
1285
Arnd Bergmann80978042013-04-25 19:29:04 +02001286#ifdef S3C2410_PLATFORM_DRIVER
1287 retval = platform_driver_register(&S3C2410_PLATFORM_DRIVER);
1288 if (retval < 0)
1289 goto error_s3c2410;
1290#endif
1291
1292#ifdef EXYNOS_PLATFORM_DRIVER
1293 retval = platform_driver_register(&EXYNOS_PLATFORM_DRIVER);
1294 if (retval < 0)
1295 goto error_exynos;
1296#endif
1297
1298#ifdef EP93XX_PLATFORM_DRIVER
1299 retval = platform_driver_register(&EP93XX_PLATFORM_DRIVER);
1300 if (retval < 0)
1301 goto error_ep93xx;
1302#endif
1303
1304#ifdef AT91_PLATFORM_DRIVER
1305 retval = platform_driver_register(&AT91_PLATFORM_DRIVER);
1306 if (retval < 0)
1307 goto error_at91;
1308#endif
1309
1310#ifdef NXP_PLATFORM_DRIVER
1311 retval = platform_driver_register(&NXP_PLATFORM_DRIVER);
1312 if (retval < 0)
1313 goto error_nxp;
1314#endif
1315
1316#ifdef DAVINCI_PLATFORM_DRIVER
1317 retval = platform_driver_register(&DAVINCI_PLATFORM_DRIVER);
1318 if (retval < 0)
1319 goto error_davinci;
1320#endif
1321
1322#ifdef SPEAR_PLATFORM_DRIVER
1323 retval = platform_driver_register(&SPEAR_PLATFORM_DRIVER);
1324 if (retval < 0)
1325 goto error_spear;
1326#endif
1327
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001328 return retval;
1329
1330 /* Error path */
Arnd Bergmann80978042013-04-25 19:29:04 +02001331#ifdef SPEAR_PLATFORM_DRIVER
1332 platform_driver_unregister(&SPEAR_PLATFORM_DRIVER);
1333 error_spear:
1334#endif
1335#ifdef DAVINCI_PLATFORM_DRIVER
1336 platform_driver_unregister(&DAVINCI_PLATFORM_DRIVER);
1337 error_davinci:
1338#endif
1339#ifdef NXP_PLATFORM_DRIVER
1340 platform_driver_unregister(&NXP_PLATFORM_DRIVER);
1341 error_nxp:
1342#endif
1343#ifdef AT91_PLATFORM_DRIVER
1344 platform_driver_unregister(&AT91_PLATFORM_DRIVER);
1345 error_at91:
1346#endif
1347#ifdef EP93XX_PLATFORM_DRIVER
1348 platform_driver_unregister(&EP93XX_PLATFORM_DRIVER);
1349 error_ep93xx:
1350#endif
1351#ifdef EXYNOS_PLATFORM_DRIVER
1352 platform_driver_unregister(&EXYNOS_PLATFORM_DRIVER);
1353 error_exynos:
1354#endif
1355#ifdef S3C2410_PLATFORM_DRIVER
1356 platform_driver_unregister(&S3C2410_PLATFORM_DRIVER);
1357 error_s3c2410:
1358#endif
Dmitry Baryshkov78c73412008-10-08 16:14:23 +04001359#ifdef TMIO_OHCI_DRIVER
1360 platform_driver_unregister(&TMIO_OHCI_DRIVER);
1361 error_tmio:
1362#endif
Ben Dooks3ee38d82008-06-08 17:20:11 +01001363#ifdef SM501_OHCI_DRIVER
Dmitry Baryshkov78c73412008-10-08 16:14:23 +04001364 platform_driver_unregister(&SM501_OHCI_DRIVER);
Ben Dooks3ee38d82008-06-08 17:20:11 +01001365 error_sm501:
1366#endif
Benjamin Herrenschmidtde447432007-01-15 20:12:06 -08001367#ifdef PCI_DRIVER
Michael Bueschc604e852007-10-09 23:47:17 -07001368 pci_unregister_driver(&PCI_DRIVER);
Benjamin Herrenschmidtde447432007-01-15 20:12:06 -08001369 error_pci:
Sylvain Munaut495a6782006-12-13 21:09:55 +01001370#endif
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001371#ifdef SA1111_DRIVER
Benjamin Herrenschmidtde447432007-01-15 20:12:06 -08001372 sa1111_driver_unregister(&SA1111_DRIVER);
1373 error_sa1111:
1374#endif
1375#ifdef OF_PLATFORM_DRIVER
Grant Likelyd35fb642011-02-22 21:08:34 -07001376 platform_driver_unregister(&OF_PLATFORM_DRIVER);
Benjamin Herrenschmidtde447432007-01-15 20:12:06 -08001377 error_of_platform:
1378#endif
Arnd Bergmann80978042013-04-25 19:29:04 +02001379#ifdef OMAP3_PLATFORM_DRIVER
1380 platform_driver_unregister(&OMAP3_PLATFORM_DRIVER);
1381 error_omap3_platform:
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001382#endif
Anand Gadiyar968b4482010-05-10 21:56:12 +05301383#ifdef OMAP1_PLATFORM_DRIVER
1384 platform_driver_unregister(&OMAP1_PLATFORM_DRIVER);
1385 error_omap1_platform:
1386#endif
Arnd Bergmann80978042013-04-25 19:29:04 +02001387#ifdef PLATFORM_DRIVER
1388 platform_driver_unregister(&PLATFORM_DRIVER);
1389 error_platform:
Anand Gadiyar968b4482010-05-10 21:56:12 +05301390#endif
Geoff Levand6a6c9572007-01-15 20:12:10 -08001391#ifdef PS3_SYSTEM_BUS_DRIVER
Geoff Levand7a4eb7f2007-06-05 20:04:35 -07001392 ps3_ohci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
Geoff Levand6a6c9572007-01-15 20:12:10 -08001393 error_ps3:
1394#endif
Tony Jones684c19e2007-09-11 14:07:31 -07001395#ifdef DEBUG
1396 debugfs_remove(ohci_debug_root);
1397 ohci_debug_root = NULL;
1398 error_debug:
1399#endif
1400
Alan Stern9beeee62008-10-02 11:48:13 -04001401 clear_bit(USB_OHCI_LOADED, &usb_hcds_loaded);
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001402 return retval;
1403}
1404module_init(ohci_hcd_mod_init);
1405
1406static void __exit ohci_hcd_mod_exit(void)
1407{
Arnd Bergmann80978042013-04-25 19:29:04 +02001408#ifdef SPEAR_PLATFORM_DRIVER
1409 platform_driver_unregister(&SPEAR_PLATFORM_DRIVER);
1410#endif
1411#ifdef DAVINCI_PLATFORM_DRIVER
1412 platform_driver_unregister(&DAVINCI_PLATFORM_DRIVER);
1413#endif
1414#ifdef NXP_PLATFORM_DRIVER
1415 platform_driver_unregister(&NXP_PLATFORM_DRIVER);
1416#endif
1417#ifdef AT91_PLATFORM_DRIVER
1418 platform_driver_unregister(&AT91_PLATFORM_DRIVER);
1419#endif
1420#ifdef EP93XX_PLATFORM_DRIVER
1421 platform_driver_unregister(&EP93XX_PLATFORM_DRIVER);
1422#endif
1423#ifdef EXYNOS_PLATFORM_DRIVER
1424 platform_driver_unregister(&EXYNOS_PLATFORM_DRIVER);
1425#endif
1426#ifdef S3C2410_PLATFORM_DRIVER
1427 platform_driver_unregister(&S3C2410_PLATFORM_DRIVER);
1428#endif
Dmitry Baryshkov78c73412008-10-08 16:14:23 +04001429#ifdef TMIO_OHCI_DRIVER
1430 platform_driver_unregister(&TMIO_OHCI_DRIVER);
1431#endif
Ben Dooks3ee38d82008-06-08 17:20:11 +01001432#ifdef SM501_OHCI_DRIVER
1433 platform_driver_unregister(&SM501_OHCI_DRIVER);
1434#endif
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001435#ifdef PCI_DRIVER
1436 pci_unregister_driver(&PCI_DRIVER);
1437#endif
1438#ifdef SA1111_DRIVER
1439 sa1111_driver_unregister(&SA1111_DRIVER);
1440#endif
Sylvain Munaut495a6782006-12-13 21:09:55 +01001441#ifdef OF_PLATFORM_DRIVER
Grant Likelyd35fb642011-02-22 21:08:34 -07001442 platform_driver_unregister(&OF_PLATFORM_DRIVER);
Sylvain Munaut495a6782006-12-13 21:09:55 +01001443#endif
Keshava Munegowdaffb67482010-09-14 04:40:01 +05301444#ifdef OMAP3_PLATFORM_DRIVER
1445 platform_driver_unregister(&OMAP3_PLATFORM_DRIVER);
1446#endif
Arnd Bergmann80978042013-04-25 19:29:04 +02001447#ifdef OMAP1_PLATFORM_DRIVER
1448 platform_driver_unregister(&OMAP1_PLATFORM_DRIVER);
1449#endif
1450#ifdef PLATFORM_DRIVER
1451 platform_driver_unregister(&PLATFORM_DRIVER);
1452#endif
Geoff Levand6a6c9572007-01-15 20:12:10 -08001453#ifdef PS3_SYSTEM_BUS_DRIVER
Geoff Levand7a4eb7f2007-06-05 20:04:35 -07001454 ps3_ohci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
Geoff Levand6a6c9572007-01-15 20:12:10 -08001455#endif
Tony Jones684c19e2007-09-11 14:07:31 -07001456#ifdef DEBUG
1457 debugfs_remove(ohci_debug_root);
1458#endif
Alan Stern9beeee62008-10-02 11:48:13 -04001459 clear_bit(USB_OHCI_LOADED, &usb_hcds_loaded);
Sylvain Munaut5e16fab2006-12-13 21:09:54 +01001460}
1461module_exit(ohci_hcd_mod_exit);
1462