/* * OHCI HCD (Host Controller Driver) for USB. * * (C) Copyright 1999 Roman Weissgaerber * (C) Copyright 2000-2002 David Brownell * * [ Initialisation is based on Linus' ] * [ uhci code and gregs ohci fragments ] * [ (C) Copyright 1999 Linus Torvalds ] * [ (C) Copyright 1999 Gregory P. Smith] * * PCI Bus Glue * * This file is licenced under the GPL. */ #include #include #include #include #include #include #include "ohci.h" #include "pci-quirks.h" #define DRIVER_DESC "OHCI PCI platform driver" static const char hcd_name[] = "ohci-pci"; /*-------------------------------------------------------------------------*/ static int broken_suspend(struct usb_hcd *hcd) { device_init_wakeup(&hcd->self.root_hub->dev, 0); return 0; } /* AMD 756, for most chips (early revs), corrupts register * values on read ... so enable the vendor workaround. */ static int ohci_quirk_amd756(struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); ohci->flags = OHCI_QUIRK_AMD756; ohci_dbg (ohci, "AMD756 erratum 4 workaround\n"); /* also erratum 10 (suspend/resume issues) */ return broken_suspend(hcd); } /* Apple's OHCI driver has a lot of bizarre workarounds * for this chip. Evidently control and bulk lists * can get confused. (B&W G3 models, and ...) */ static int ohci_quirk_opti(struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); ohci_dbg (ohci, "WARNING: OPTi workarounds unavailable\n"); return 0; } /* 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. */ static int ohci_quirk_ns(struct usb_hcd *hcd) { struct pci_dev *pdev = to_pci_dev(hcd->self.controller); struct pci_dev *b; b = pci_get_slot (pdev->bus, PCI_DEVFN (PCI_SLOT (pdev->devfn), 1)); if (b && b->device == PCI_DEVICE_ID_NS_87560_LIO && b->vendor == PCI_VENDOR_ID_NS) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); ohci->flags |= OHCI_QUIRK_SUPERIO; ohci_dbg (ohci, "Using NSC SuperIO setup\n"); } pci_dev_put(b); return 0; } /* Check for Compaq's ZFMicro chipset, which needs short * delays before control or bulk queues get re-activated * in finish_unlinks() */ static int ohci_quirk_zfmicro(struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); ohci->flags |= OHCI_QUIRK_ZFMICRO; ohci_dbg(ohci, "enabled Compaq ZFMicro chipset quirks\n"); return 0; } /* Check for Toshiba SCC OHCI which has big endian registers * and little endian in memory data structures */ static int ohci_quirk_toshiba_scc(struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); /* That chip is only present in the southbridge of some * cell based platforms which are supposed to select * CONFIG_USB_OHCI_BIG_ENDIAN_MMIO. We verify here if * that was the case though. */ #ifdef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO ohci->flags |= OHCI_QUIRK_BE_MMIO; ohci_dbg (ohci, "enabled big endian Toshiba quirk\n"); return 0; #else ohci_err (ohci, "unsupported big endian Toshiba quirk\n"); return -ENXIO; #endif } /* Check for NEC chip and apply quirk for allegedly lost interrupts. */ static void ohci_quirk_nec_worker(struct work_struct *work) { struct ohci_hcd *ohci = container_of(work, struct ohci_hcd, nec_work); int status; status = ohci_restart(ohci); if (status != 0) ohci_err(ohci, "Restarting NEC controller failed in %s, %d\n", "ohci_restart", status); } static int ohci_quirk_nec(struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); ohci->flags |= OHCI_QUIRK_NEC; INIT_WORK(&ohci->nec_work, ohci_quirk_nec_worker); ohci_dbg (ohci, "enabled NEC chipset lost interrupt quirk\n"); return 0; } static int ohci_quirk_amd700(struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci(hcd); if (usb_amd_find_chipset_info()) ohci->flags |= OHCI_QUIRK_AMD_PLL; /* SB800 needs pre-fetch fix */ if (usb_amd_prefetch_quirk()) { ohci->flags |= OHCI_QUIRK_AMD_PREFETCH; ohci_dbg(ohci, "enabled AMD prefetch quirk\n"); } ohci->flags |= OHCI_QUIRK_GLOBAL_SUSPEND; return 0; } /* List of quirks for OHCI */ static const struct pci_device_id ohci_pci_quirks[] = { { PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x740c), .driver_data = (unsigned long)ohci_quirk_amd756, }, { PCI_DEVICE(PCI_VENDOR_ID_OPTI, 0xc861), .driver_data = (unsigned long)ohci_quirk_opti, }, { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_ANY_ID), .driver_data = (unsigned long)ohci_quirk_ns, }, { PCI_DEVICE(PCI_VENDOR_ID_COMPAQ, 0xa0f8), .driver_data = (unsigned long)ohci_quirk_zfmicro, }, { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, 0x01b6), .driver_data = (unsigned long)ohci_quirk_toshiba_scc, }, { PCI_DEVICE(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB), .driver_data = (unsigned long)ohci_quirk_nec, }, { /* Toshiba portege 4000 */ .vendor = PCI_VENDOR_ID_AL, .device = 0x5237, .subvendor = PCI_VENDOR_ID_TOSHIBA, .subdevice = 0x0004, .driver_data = (unsigned long) broken_suspend, }, { PCI_DEVICE(PCI_VENDOR_ID_ITE, 0x8152), .driver_data = (unsigned long) broken_suspend, }, { PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4397), .driver_data = (unsigned long)ohci_quirk_amd700, }, { PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4398), .driver_data = (unsigned long)ohci_quirk_amd700, }, { PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4399), .driver_data = (unsigned long)ohci_quirk_amd700, }, /* FIXME for some of the early AMD 760 southbridges, OHCI * won't work at all. blacklist them. */ {}, }; static int ohci_pci_reset (struct usb_hcd *hcd) { struct ohci_hcd *ohci = hcd_to_ohci (hcd); struct pci_dev *pdev = to_pci_dev(hcd->self.controller); int ret = 0; if (hcd->self.controller) { const struct pci_device_id *quirk_id; quirk_id = pci_match_id(ohci_pci_quirks, pdev); if (quirk_id != NULL) { int (*quirk)(struct usb_hcd *ohci); quirk = (void *)quirk_id->driver_data; ret = quirk(hcd); } } if (ret == 0) ret = ohci_setup(hcd); /* * After ohci setup RWC may not be set for add-in PCI cards. * This transfers PCI PM wakeup capabilities. */ if (device_can_wakeup(&pdev->dev)) ohci->hc_control |= OHCI_CTRL_RWC; return ret; } static struct hc_driver __read_mostly ohci_pci_hc_driver; static const struct ohci_driver_overrides pci_overrides __initconst = { .product_desc = "OHCI PCI host controller", .reset = ohci_pci_reset, }; static const struct pci_device_id pci_ids [] = { { /* handle any USB OHCI controller */ PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_OHCI, ~0), .driver_data = (unsigned long) &ohci_pci_hc_driver, }, { /* The device in the ConneXT I/O hub has no class reg */ PCI_VDEVICE(STMICRO, PCI_DEVICE_ID_STMICRO_USB_OHCI), .driver_data = (unsigned long) &ohci_pci_hc_driver, }, { /* end: all zeroes */ } }; MODULE_DEVICE_TABLE (pci, pci_ids); /* pci driver glue; this is a "new style" PCI driver module */ static struct pci_driver ohci_pci_driver = { .name = (char *) hcd_name, .id_table = pci_ids, .probe = usb_hcd_pci_probe, .remove = usb_hcd_pci_remove, .shutdown = usb_hcd_pci_shutdown, #ifdef CONFIG_PM .driver = { .pm = &usb_hcd_pci_pm_ops }, #endif }; static int __init ohci_pci_init(void) { if (usb_disabled()) return -ENODEV; pr_info("%s: " DRIVER_DESC "\n", hcd_name); ohci_init_driver(&ohci_pci_hc_driver, &pci_overrides); #ifdef CONFIG_PM /* Entries for the PCI suspend/resume callbacks are special */ ohci_pci_hc_driver.pci_suspend = ohci_suspend; ohci_pci_hc_driver.pci_resume = ohci_resume; #endif return pci_register_driver(&ohci_pci_driver); } module_init(ohci_pci_init); static void __exit ohci_pci_cleanup(void) { pci_unregister_driver(&ohci_pci_driver); } module_exit(ohci_pci_cleanup); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); MODULE_SOFTDEP("pre: ehci_pci"); /usb3503.c')