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 #error "This file is PCI bus glue. CONFIG_PCI must be defined."
21 /*-------------------------------------------------------------------------*/
24 ohci_pci_reset (struct usb_hcd *hcd)
26 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
29 return ohci_init (ohci);
33 ohci_pci_start (struct usb_hcd *hcd)
35 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
38 if(hcd->self.controller && hcd->self.controller->bus == &pci_bus_type) {
39 struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
41 /* AMD 756, for most chips (early revs), corrupts register
42 * values on read ... so enable the vendor workaround.
44 if (pdev->vendor == PCI_VENDOR_ID_AMD
45 && pdev->device == 0x740c) {
46 ohci->flags = OHCI_QUIRK_AMD756;
47 ohci_dbg (ohci, "AMD756 erratum 4 workaround\n");
48 // also somewhat erratum 10 (suspend/resume issues)
51 /* FIXME for some of the early AMD 760 southbridges, OHCI
52 * won't work at all. blacklist them.
55 /* Apple's OHCI driver has a lot of bizarre workarounds
56 * for this chip. Evidently control and bulk lists
57 * can get confused. (B&W G3 models, and ...)
59 else if (pdev->vendor == PCI_VENDOR_ID_OPTI
60 && pdev->device == 0xc861) {
62 "WARNING: OPTi workarounds unavailable\n");
65 /* Check for NSC87560. We have to look at the bridge (fn1) to
66 * identify the USB (fn2). This quirk might apply to more or
69 else if (pdev->vendor == PCI_VENDOR_ID_NS) {
72 b = pci_find_slot (pdev->bus->number,
73 PCI_DEVFN (PCI_SLOT (pdev->devfn), 1));
74 if (b && b->device == PCI_DEVICE_ID_NS_87560_LIO
75 && b->vendor == PCI_VENDOR_ID_NS) {
76 ohci->flags |= OHCI_QUIRK_SUPERIO;
77 ohci_dbg (ohci, "Using NSC SuperIO setup\n");
81 /* Check for Compaq's ZFMicro chipset, which needs short
82 * delays before control or bulk queues get re-activated
85 else if (pdev->vendor == PCI_VENDOR_ID_COMPAQ
86 && pdev->device == 0xa0f8) {
87 ohci->flags |= OHCI_QUIRK_ZFMICRO;
89 "enabled Compaq ZFMicro chipset quirk\n");
93 /* NOTE: there may have already been a first reset, to
94 * keep bios/smm irqs from making trouble
96 if ((ret = ohci_run (ohci)) < 0) {
97 ohci_err (ohci, "can't start\n");
106 static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message)
108 /* root hub was already suspended */
113 static int ohci_pci_resume (struct usb_hcd *hcd)
115 usb_hcd_resume_root_hub(hcd);
119 #endif /* CONFIG_PM */
122 /*-------------------------------------------------------------------------*/
124 static const struct hc_driver ohci_pci_hc_driver = {
125 .description = hcd_name,
126 .product_desc = "OHCI Host Controller",
127 .hcd_priv_size = sizeof(struct ohci_hcd),
130 * generic hardware linkage
133 .flags = HCD_MEMORY | HCD_USB11,
136 * basic lifecycle operations
138 .reset = ohci_pci_reset,
139 .start = ohci_pci_start,
141 .suspend = ohci_pci_suspend,
142 .resume = ohci_pci_resume,
147 * managing i/o requests and associated device resources
149 .urb_enqueue = ohci_urb_enqueue,
150 .urb_dequeue = ohci_urb_dequeue,
151 .endpoint_disable = ohci_endpoint_disable,
156 .get_frame_number = ohci_get_frame,
161 .hub_status_data = ohci_hub_status_data,
162 .hub_control = ohci_hub_control,
164 .bus_suspend = ohci_bus_suspend,
165 .bus_resume = ohci_bus_resume,
167 .start_port_reset = ohci_start_port_reset,
170 /*-------------------------------------------------------------------------*/
173 static const struct pci_device_id pci_ids [] = { {
174 /* handle any USB OHCI controller */
175 PCI_DEVICE_CLASS((PCI_CLASS_SERIAL_USB << 8) | 0x10, ~0),
176 .driver_data = (unsigned long) &ohci_pci_hc_driver,
177 }, { /* end: all zeroes */ }
179 MODULE_DEVICE_TABLE (pci, pci_ids);
181 /* pci driver glue; this is a "new style" PCI driver module */
182 static struct pci_driver ohci_pci_driver = {
183 .name = (char *) hcd_name,
186 .probe = usb_hcd_pci_probe,
187 .remove = usb_hcd_pci_remove,
190 .suspend = usb_hcd_pci_suspend,
191 .resume = usb_hcd_pci_resume,
196 static int __init ohci_hcd_pci_init (void)
198 printk (KERN_DEBUG "%s: " DRIVER_INFO " (PCI)\n", hcd_name);
202 pr_debug ("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
203 sizeof (struct ed), sizeof (struct td));
204 return pci_register_driver (&ohci_pci_driver);
206 module_init (ohci_hcd_pci_init);
208 /*-------------------------------------------------------------------------*/
210 static void __exit ohci_hcd_pci_cleanup (void)
212 pci_unregister_driver (&ohci_pci_driver);
214 module_exit (ohci_hcd_pci_cleanup);