2 * OHCI HCD (Host Controller Driver) for USB.
4 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
5 * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
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]
14 * This file is licenced under the GPL.
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/pci.h>
21 #include <linux/usb.h>
22 #include <linux/usb/hcd.h>
25 #include "pci-quirks.h"
27 #define DRIVER_DESC "OHCI PCI platform driver"
29 static const char hcd_name[] = "ohci-pci";
32 /*-------------------------------------------------------------------------*/
34 static int broken_suspend(struct usb_hcd *hcd)
36 device_init_wakeup(&hcd->self.root_hub->dev, 0);
40 /* AMD 756, for most chips (early revs), corrupts register
41 * values on read ... so enable the vendor workaround.
43 static int ohci_quirk_amd756(struct usb_hcd *hcd)
45 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
47 ohci->flags = OHCI_QUIRK_AMD756;
48 ohci_dbg (ohci, "AMD756 erratum 4 workaround\n");
50 /* also erratum 10 (suspend/resume issues) */
51 return broken_suspend(hcd);
54 /* Apple's OHCI driver has a lot of bizarre workarounds
55 * for this chip. Evidently control and bulk lists
56 * can get confused. (B&W G3 models, and ...)
58 static int ohci_quirk_opti(struct usb_hcd *hcd)
60 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
62 ohci_dbg (ohci, "WARNING: OPTi workarounds unavailable\n");
67 /* Check for NSC87560. We have to look at the bridge (fn1) to
68 * identify the USB (fn2). This quirk might apply to more or
71 static int ohci_quirk_ns(struct usb_hcd *hcd)
73 struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
76 b = pci_get_slot (pdev->bus, PCI_DEVFN (PCI_SLOT (pdev->devfn), 1));
77 if (b && b->device == PCI_DEVICE_ID_NS_87560_LIO
78 && b->vendor == PCI_VENDOR_ID_NS) {
79 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
81 ohci->flags |= OHCI_QUIRK_SUPERIO;
82 ohci_dbg (ohci, "Using NSC SuperIO setup\n");
89 /* Check for Compaq's ZFMicro chipset, which needs short
90 * delays before control or bulk queues get re-activated
93 static int ohci_quirk_zfmicro(struct usb_hcd *hcd)
95 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
97 ohci->flags |= OHCI_QUIRK_ZFMICRO;
98 ohci_dbg(ohci, "enabled Compaq ZFMicro chipset quirks\n");
103 /* Check for Toshiba SCC OHCI which has big endian registers
104 * and little endian in memory data structures
106 static int ohci_quirk_toshiba_scc(struct usb_hcd *hcd)
108 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
110 /* That chip is only present in the southbridge of some
111 * cell based platforms which are supposed to select
112 * CONFIG_USB_OHCI_BIG_ENDIAN_MMIO. We verify here if
113 * that was the case though.
115 #ifdef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
116 ohci->flags |= OHCI_QUIRK_BE_MMIO;
117 ohci_dbg (ohci, "enabled big endian Toshiba quirk\n");
120 ohci_err (ohci, "unsupported big endian Toshiba quirk\n");
125 /* Check for NEC chip and apply quirk for allegedly lost interrupts.
128 static void ohci_quirk_nec_worker(struct work_struct *work)
130 struct ohci_hcd *ohci = container_of(work, struct ohci_hcd, nec_work);
133 status = ohci_restart(ohci);
135 ohci_err(ohci, "Restarting NEC controller failed in %s, %d\n",
136 "ohci_restart", status);
139 static int ohci_quirk_nec(struct usb_hcd *hcd)
141 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
143 ohci->flags |= OHCI_QUIRK_NEC;
144 INIT_WORK(&ohci->nec_work, ohci_quirk_nec_worker);
145 ohci_dbg (ohci, "enabled NEC chipset lost interrupt quirk\n");
150 static int ohci_quirk_amd700(struct usb_hcd *hcd)
152 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
153 struct pci_dev *amd_smbus_dev;
156 if (usb_amd_find_chipset_info())
157 ohci->flags |= OHCI_QUIRK_AMD_PLL;
159 amd_smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI,
160 PCI_DEVICE_ID_ATI_SBX00_SMBUS, NULL);
164 rev = amd_smbus_dev->revision;
166 /* SB800 needs pre-fetch fix */
167 if ((rev >= 0x40) && (rev <= 0x4f)) {
168 ohci->flags |= OHCI_QUIRK_AMD_PREFETCH;
169 ohci_dbg(ohci, "enabled AMD prefetch quirk\n");
172 pci_dev_put(amd_smbus_dev);
173 amd_smbus_dev = NULL;
178 /* List of quirks for OHCI */
179 static const struct pci_device_id ohci_pci_quirks[] = {
181 PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x740c),
182 .driver_data = (unsigned long)ohci_quirk_amd756,
185 PCI_DEVICE(PCI_VENDOR_ID_OPTI, 0xc861),
186 .driver_data = (unsigned long)ohci_quirk_opti,
189 PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_ANY_ID),
190 .driver_data = (unsigned long)ohci_quirk_ns,
193 PCI_DEVICE(PCI_VENDOR_ID_COMPAQ, 0xa0f8),
194 .driver_data = (unsigned long)ohci_quirk_zfmicro,
197 PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, 0x01b6),
198 .driver_data = (unsigned long)ohci_quirk_toshiba_scc,
201 PCI_DEVICE(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB),
202 .driver_data = (unsigned long)ohci_quirk_nec,
205 /* Toshiba portege 4000 */
206 .vendor = PCI_VENDOR_ID_AL,
208 .subvendor = PCI_VENDOR_ID_TOSHIBA,
210 .driver_data = (unsigned long) broken_suspend,
213 PCI_DEVICE(PCI_VENDOR_ID_ITE, 0x8152),
214 .driver_data = (unsigned long) broken_suspend,
217 PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4397),
218 .driver_data = (unsigned long)ohci_quirk_amd700,
221 PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4398),
222 .driver_data = (unsigned long)ohci_quirk_amd700,
225 PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4399),
226 .driver_data = (unsigned long)ohci_quirk_amd700,
229 /* FIXME for some of the early AMD 760 southbridges, OHCI
230 * won't work at all. blacklist them.
236 static int ohci_pci_reset (struct usb_hcd *hcd)
238 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
239 struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
242 if (hcd->self.controller) {
243 const struct pci_device_id *quirk_id;
245 quirk_id = pci_match_id(ohci_pci_quirks, pdev);
246 if (quirk_id != NULL) {
247 int (*quirk)(struct usb_hcd *ohci);
248 quirk = (void *)quirk_id->driver_data;
254 ret = ohci_setup(hcd);
256 * After ohci setup RWC may not be set for add-in PCI cards.
257 * This transfers PCI PM wakeup capabilities.
259 if (device_can_wakeup(&pdev->dev))
260 ohci->hc_control |= OHCI_CTRL_RWC;
264 static struct hc_driver __read_mostly ohci_pci_hc_driver;
266 static const struct ohci_driver_overrides pci_overrides __initconst = {
267 .product_desc = "OHCI PCI host controller",
268 .reset = ohci_pci_reset,
271 static const struct pci_device_id pci_ids [] = { {
272 /* handle any USB OHCI controller */
273 PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_OHCI, ~0),
274 .driver_data = (unsigned long) &ohci_pci_hc_driver,
276 /* The device in the ConneXT I/O hub has no class reg */
277 PCI_VDEVICE(STMICRO, PCI_DEVICE_ID_STMICRO_USB_OHCI),
278 .driver_data = (unsigned long) &ohci_pci_hc_driver,
279 }, { /* end: all zeroes */ }
281 MODULE_DEVICE_TABLE (pci, pci_ids);
283 /* pci driver glue; this is a "new style" PCI driver module */
284 static struct pci_driver ohci_pci_driver = {
285 .name = (char *) hcd_name,
288 .probe = usb_hcd_pci_probe,
289 .remove = usb_hcd_pci_remove,
290 .shutdown = usb_hcd_pci_shutdown,
292 #ifdef CONFIG_PM_SLEEP
294 .pm = &usb_hcd_pci_pm_ops
299 static int __init ohci_pci_init(void)
304 pr_info("%s: " DRIVER_DESC "\n", hcd_name);
306 ohci_init_driver(&ohci_pci_hc_driver, &pci_overrides);
307 return pci_register_driver(&ohci_pci_driver);
309 module_init(ohci_pci_init);
311 static void __exit ohci_pci_cleanup(void)
313 pci_unregister_driver(&ohci_pci_driver);
315 module_exit(ohci_pci_cleanup);
317 MODULE_DESCRIPTION(DRIVER_DESC);
318 MODULE_LICENSE("GPL");