USB: omap_udc: fix compilation with debug enabled
[linux-block.git] / drivers / usb / host / ohci-pci.c
CommitLineData
1da177e4
LT
1/*
2 * OHCI HCD (Host Controller Driver) for USB.
3 *
4 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
5 * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
dd9048af 6 *
1da177e4
LT
7 * [ Initialisation is based on Linus' ]
8 * [ uhci code and gregs ohci fragments ]
9 * [ (C) Copyright 1999 Linus Torvalds ]
10 * [ (C) Copyright 1999 Gregory P. Smith]
dd9048af 11 *
1da177e4
LT
12 * PCI Bus Glue
13 *
14 * This file is licenced under the GPL.
15 */
dd9048af 16
1da177e4
LT
17#ifndef CONFIG_PCI
18#error "This file is PCI bus glue. CONFIG_PCI must be defined."
19#endif
20
21/*-------------------------------------------------------------------------*/
22
931384fb
DB
23static int broken_suspend(struct usb_hcd *hcd)
24{
25 device_init_wakeup(&hcd->self.root_hub->dev, 0);
26 return 0;
27}
28
4302a595
BH
29/* AMD 756, for most chips (early revs), corrupts register
30 * values on read ... so enable the vendor workaround.
31 */
931384fb 32static int ohci_quirk_amd756(struct usb_hcd *hcd)
1da177e4
LT
33{
34 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
35
4302a595
BH
36 ohci->flags = OHCI_QUIRK_AMD756;
37 ohci_dbg (ohci, "AMD756 erratum 4 workaround\n");
38
39 /* also erratum 10 (suspend/resume issues) */
931384fb 40 return broken_suspend(hcd);
1da177e4
LT
41}
42
4302a595
BH
43/* Apple's OHCI driver has a lot of bizarre workarounds
44 * for this chip. Evidently control and bulk lists
45 * can get confused. (B&W G3 models, and ...)
46 */
931384fb 47static int ohci_quirk_opti(struct usb_hcd *hcd)
1da177e4
LT
48{
49 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
1da177e4 50
4302a595
BH
51 ohci_dbg (ohci, "WARNING: OPTi workarounds unavailable\n");
52
53 return 0;
54}
55
56/* Check for NSC87560. We have to look at the bridge (fn1) to
57 * identify the USB (fn2). This quirk might apply to more or
58 * even all NSC stuff.
59 */
931384fb 60static int ohci_quirk_ns(struct usb_hcd *hcd)
4302a595
BH
61{
62 struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
63 struct pci_dev *b;
64
65 b = pci_get_slot (pdev->bus, PCI_DEVFN (PCI_SLOT (pdev->devfn), 1));
66 if (b && b->device == PCI_DEVICE_ID_NS_87560_LIO
67 && b->vendor == PCI_VENDOR_ID_NS) {
68 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
69
70 ohci->flags |= OHCI_QUIRK_SUPERIO;
71 ohci_dbg (ohci, "Using NSC SuperIO setup\n");
72 }
73 pci_dev_put(b);
74
75 return 0;
76}
77
78/* Check for Compaq's ZFMicro chipset, which needs short
79 * delays before control or bulk queues get re-activated
80 * in finish_unlinks()
81 */
931384fb 82static int ohci_quirk_zfmicro(struct usb_hcd *hcd)
4302a595
BH
83{
84 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
85
86 ohci->flags |= OHCI_QUIRK_ZFMICRO;
89a0fd18 87 ohci_dbg(ohci, "enabled Compaq ZFMicro chipset quirks\n");
4302a595
BH
88
89 return 0;
90}
91
11d1a4aa
BH
92/* Check for Toshiba SCC OHCI which has big endian registers
93 * and little endian in memory data structures
94 */
931384fb 95static int ohci_quirk_toshiba_scc(struct usb_hcd *hcd)
11d1a4aa
BH
96{
97 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
98
99 /* That chip is only present in the southbridge of some
100 * cell based platforms which are supposed to select
101 * CONFIG_USB_OHCI_BIG_ENDIAN_MMIO. We verify here if
102 * that was the case though.
103 */
104#ifdef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
105 ohci->flags |= OHCI_QUIRK_BE_MMIO;
106 ohci_dbg (ohci, "enabled big endian Toshiba quirk\n");
107 return 0;
108#else
109 ohci_err (ohci, "unsupported big endian Toshiba quirk\n");
110 return -ENXIO;
111#endif
112}
4302a595 113
d576bb9f
MH
114/* Check for NEC chip and apply quirk for allegedly lost interrupts.
115 */
89a0fd18
MN
116
117static void ohci_quirk_nec_worker(struct work_struct *work)
118{
119 struct ohci_hcd *ohci = container_of(work, struct ohci_hcd, nec_work);
120 int status;
121
122 status = ohci_init(ohci);
123 if (status != 0) {
124 ohci_err(ohci, "Restarting NEC controller failed in %s, %d\n",
125 "ohci_init", status);
126 return;
127 }
128
129 status = ohci_restart(ohci);
130 if (status != 0)
131 ohci_err(ohci, "Restarting NEC controller failed in %s, %d\n",
132 "ohci_restart", status);
133}
134
d576bb9f
MH
135static int ohci_quirk_nec(struct usb_hcd *hcd)
136{
137 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
138
139 ohci->flags |= OHCI_QUIRK_NEC;
89a0fd18 140 INIT_WORK(&ohci->nec_work, ohci_quirk_nec_worker);
d576bb9f
MH
141 ohci_dbg (ohci, "enabled NEC chipset lost interrupt quirk\n");
142
143 return 0;
144}
145
4302a595
BH
146/* List of quirks for OHCI */
147static const struct pci_device_id ohci_pci_quirks[] = {
148 {
149 PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x740c),
150 .driver_data = (unsigned long)ohci_quirk_amd756,
151 },
152 {
153 PCI_DEVICE(PCI_VENDOR_ID_OPTI, 0xc861),
154 .driver_data = (unsigned long)ohci_quirk_opti,
155 },
156 {
157 PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_ANY_ID),
158 .driver_data = (unsigned long)ohci_quirk_ns,
159 },
160 {
161 PCI_DEVICE(PCI_VENDOR_ID_COMPAQ, 0xa0f8),
162 .driver_data = (unsigned long)ohci_quirk_zfmicro,
163 },
11d1a4aa
BH
164 {
165 PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, 0x01b6),
166 .driver_data = (unsigned long)ohci_quirk_toshiba_scc,
167 },
d576bb9f
MH
168 {
169 PCI_DEVICE(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB),
170 .driver_data = (unsigned long)ohci_quirk_nec,
171 },
931384fb
DB
172 {
173 /* Toshiba portege 4000 */
174 .vendor = PCI_VENDOR_ID_AL,
175 .device = 0x5237,
8ab5e8c0 176 .subvendor = PCI_VENDOR_ID_TOSHIBA,
931384fb
DB
177 .subdevice = 0x0004,
178 .driver_data = (unsigned long) broken_suspend,
179 },
33f73e56
RA
180 {
181 PCI_DEVICE(PCI_VENDOR_ID_ITE, 0x8152),
182 .driver_data = (unsigned long) broken_suspend,
183 },
4302a595
BH
184 /* FIXME for some of the early AMD 760 southbridges, OHCI
185 * won't work at all. blacklist them.
6a9062f3 186 */
11d1a4aa 187
4302a595
BH
188 {},
189};
190
191static int ohci_pci_reset (struct usb_hcd *hcd)
192{
193 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
194 int ret = 0;
195
6a9062f3 196 if (hcd->self.controller) {
1da177e4 197 struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
4302a595 198 const struct pci_device_id *quirk_id;
1da177e4 199
4302a595
BH
200 quirk_id = pci_match_id(ohci_pci_quirks, pdev);
201 if (quirk_id != NULL) {
202 int (*quirk)(struct usb_hcd *ohci);
203 quirk = (void *)quirk_id->driver_data;
204 ret = quirk(hcd);
1da177e4 205 }
4302a595
BH
206 }
207 if (ret == 0) {
208 ohci_hcd_init (ohci);
209 return ohci_init (ohci);
210 }
211 return ret;
212}
1da177e4 213
1da177e4 214
4302a595
BH
215static int __devinit ohci_pci_start (struct usb_hcd *hcd)
216{
217 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
218 int ret;
0e498763 219
4302a595
BH
220#ifdef CONFIG_PM /* avoid warnings about unused pdev */
221 if (hcd->self.controller) {
222 struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
6a9062f3
DB
223
224 /* RWC may not be set for add-in PCI cards, since boot
225 * firmware probably ignored them. This transfers PCI
226 * PM wakeup capabilities (once the PCI layer is fixed).
227 */
228 if (device_may_wakeup(&pdev->dev))
229 ohci->hc_control |= OHCI_CTRL_RWC;
1da177e4 230 }
4302a595 231#endif /* CONFIG_PM */
1da177e4 232
4302a595
BH
233 ret = ohci_run (ohci);
234 if (ret < 0) {
1da177e4
LT
235 ohci_err (ohci, "can't start\n");
236 ohci_stop (hcd);
1da177e4 237 }
4302a595 238 return ret;
1da177e4
LT
239}
240
241#ifdef CONFIG_PM
242
9a5d3e98 243static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message)
1da177e4 244{
8de98402
BH
245 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
246 unsigned long flags;
247 int rc = 0;
248
249 /* Root hub was already suspended. Disable irq emission and
250 * mark HW unaccessible, bail out if RH has been resumed. Use
251 * the spinlock to properly synchronize with possible pending
252 * RH suspend or resume activity.
253 *
254 * This is still racy as hcd->state is manipulated outside of
255 * any locks =P But that will be a different fix.
256 */
257 spin_lock_irqsave (&ohci->lock, flags);
258 if (hcd->state != HC_STATE_SUSPENDED) {
259 rc = -EINVAL;
260 goto bail;
261 }
262 ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
263 (void)ohci_readl(ohci, &ohci->regs->intrdisable);
18584999
DB
264
265 /* make sure snapshot being resumed re-enumerates everything */
266 if (message.event == PM_EVENT_PRETHAW)
267 ohci_usb_reset(ohci);
268
8de98402
BH
269 clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
270 bail:
271 spin_unlock_irqrestore (&ohci->lock, flags);
272
273 return rc;
1da177e4
LT
274}
275
276
277static int ohci_pci_resume (struct usb_hcd *hcd)
278{
8de98402 279 set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
43bbb7e0 280 ohci_finish_controller_resume(hcd);
f197b2c5 281 return 0;
1da177e4
LT
282}
283
284#endif /* CONFIG_PM */
285
286
287/*-------------------------------------------------------------------------*/
288
289static const struct hc_driver ohci_pci_hc_driver = {
290 .description = hcd_name,
291 .product_desc = "OHCI Host Controller",
292 .hcd_priv_size = sizeof(struct ohci_hcd),
293
294 /*
295 * generic hardware linkage
296 */
297 .irq = ohci_irq,
298 .flags = HCD_MEMORY | HCD_USB11,
299
300 /*
301 * basic lifecycle operations
302 */
303 .reset = ohci_pci_reset,
304 .start = ohci_pci_start,
d413984a 305 .stop = ohci_stop,
64a21d02 306 .shutdown = ohci_shutdown,
d413984a 307
1da177e4 308#ifdef CONFIG_PM
7be7d741
AS
309 .pci_suspend = ohci_pci_suspend,
310 .pci_resume = ohci_pci_resume,
1da177e4 311#endif
1da177e4
LT
312
313 /*
314 * managing i/o requests and associated device resources
315 */
316 .urb_enqueue = ohci_urb_enqueue,
317 .urb_dequeue = ohci_urb_dequeue,
318 .endpoint_disable = ohci_endpoint_disable,
319
320 /*
321 * scheduling support
322 */
323 .get_frame_number = ohci_get_frame,
324
325 /*
326 * root hub support
327 */
328 .hub_status_data = ohci_hub_status_data,
329 .hub_control = ohci_hub_control,
09ca8adb 330 .hub_irq_enable = ohci_rhsc_enable,
8ad7fe16 331#ifdef CONFIG_PM
0c0382e3
AS
332 .bus_suspend = ohci_bus_suspend,
333 .bus_resume = ohci_bus_resume,
1da177e4
LT
334#endif
335 .start_port_reset = ohci_start_port_reset,
336};
337
338/*-------------------------------------------------------------------------*/
339
340
341static const struct pci_device_id pci_ids [] = { {
342 /* handle any USB OHCI controller */
c67808ee 343 PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_OHCI, ~0),
1da177e4
LT
344 .driver_data = (unsigned long) &ohci_pci_hc_driver,
345 }, { /* end: all zeroes */ }
346};
347MODULE_DEVICE_TABLE (pci, pci_ids);
348
349/* pci driver glue; this is a "new style" PCI driver module */
350static struct pci_driver ohci_pci_driver = {
351 .name = (char *) hcd_name,
352 .id_table = pci_ids,
353
354 .probe = usb_hcd_pci_probe,
355 .remove = usb_hcd_pci_remove,
356
357#ifdef CONFIG_PM
358 .suspend = usb_hcd_pci_suspend,
359 .resume = usb_hcd_pci_resume,
360#endif
64a21d02
AG
361
362 .shutdown = usb_hcd_pci_shutdown,
1da177e4
LT
363};
364