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331 lines
8.1 KiB
331 lines
8.1 KiB
// SPDX-License-Identifier: GPL-1.0+ |
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/* |
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* OHCI HCD (Host Controller Driver) for USB. |
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* |
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* (C) Copyright 1999 Roman Weissgaerber <[email protected]> |
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* (C) Copyright 2000-2002 David Brownell <[email protected]> |
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* |
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* [ Initialisation is based on Linus' ] |
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* [ uhci code and gregs ohci fragments ] |
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* [ (C) Copyright 1999 Linus Torvalds ] |
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* [ (C) Copyright 1999 Gregory P. Smith] |
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* |
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* PCI Bus Glue |
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* |
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* This file is licenced under the GPL. |
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*/ |
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#include <linux/io.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/pci.h> |
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#include <linux/usb.h> |
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#include <linux/usb/hcd.h> |
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#include "ohci.h" |
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#include "pci-quirks.h" |
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#define DRIVER_DESC "OHCI PCI platform driver" |
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static const char hcd_name[] = "ohci-pci"; |
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/*-------------------------------------------------------------------------*/ |
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static int broken_suspend(struct usb_hcd *hcd) |
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{ |
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device_init_wakeup(&hcd->self.root_hub->dev, 0); |
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return 0; |
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} |
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/* AMD 756, for most chips (early revs), corrupts register |
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* values on read ... so enable the vendor workaround. |
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*/ |
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static int ohci_quirk_amd756(struct usb_hcd *hcd) |
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{ |
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struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
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ohci->flags = OHCI_QUIRK_AMD756; |
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ohci_dbg (ohci, "AMD756 erratum 4 workaround\n"); |
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/* also erratum 10 (suspend/resume issues) */ |
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return broken_suspend(hcd); |
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} |
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/* Apple's OHCI driver has a lot of bizarre workarounds |
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* for this chip. Evidently control and bulk lists |
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* can get confused. (B&W G3 models, and ...) |
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*/ |
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static int ohci_quirk_opti(struct usb_hcd *hcd) |
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{ |
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struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
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ohci_dbg (ohci, "WARNING: OPTi workarounds unavailable\n"); |
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return 0; |
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} |
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/* Check for NSC87560. We have to look at the bridge (fn1) to |
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* identify the USB (fn2). This quirk might apply to more or |
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* even all NSC stuff. |
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*/ |
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static int ohci_quirk_ns(struct usb_hcd *hcd) |
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{ |
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struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
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struct pci_dev *b; |
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b = pci_get_slot (pdev->bus, PCI_DEVFN (PCI_SLOT (pdev->devfn), 1)); |
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if (b && b->device == PCI_DEVICE_ID_NS_87560_LIO |
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&& b->vendor == PCI_VENDOR_ID_NS) { |
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struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
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ohci->flags |= OHCI_QUIRK_SUPERIO; |
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ohci_dbg (ohci, "Using NSC SuperIO setup\n"); |
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} |
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pci_dev_put(b); |
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return 0; |
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} |
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/* Check for Compaq's ZFMicro chipset, which needs short |
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* delays before control or bulk queues get re-activated |
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* in finish_unlinks() |
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*/ |
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static int ohci_quirk_zfmicro(struct usb_hcd *hcd) |
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{ |
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struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
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ohci->flags |= OHCI_QUIRK_ZFMICRO; |
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ohci_dbg(ohci, "enabled Compaq ZFMicro chipset quirks\n"); |
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return 0; |
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} |
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/* Check for Toshiba SCC OHCI which has big endian registers |
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* and little endian in memory data structures |
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*/ |
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static int ohci_quirk_toshiba_scc(struct usb_hcd *hcd) |
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{ |
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struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
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/* That chip is only present in the southbridge of some |
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* cell based platforms which are supposed to select |
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* CONFIG_USB_OHCI_BIG_ENDIAN_MMIO. We verify here if |
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* that was the case though. |
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*/ |
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#ifdef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO |
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ohci->flags |= OHCI_QUIRK_BE_MMIO; |
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ohci_dbg (ohci, "enabled big endian Toshiba quirk\n"); |
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return 0; |
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#else |
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ohci_err (ohci, "unsupported big endian Toshiba quirk\n"); |
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return -ENXIO; |
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#endif |
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} |
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/* Check for NEC chip and apply quirk for allegedly lost interrupts. |
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*/ |
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static void ohci_quirk_nec_worker(struct work_struct *work) |
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{ |
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struct ohci_hcd *ohci = container_of(work, struct ohci_hcd, nec_work); |
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int status; |
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status = ohci_restart(ohci); |
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if (status != 0) |
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ohci_err(ohci, "Restarting NEC controller failed in %s, %d\n", |
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"ohci_restart", status); |
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} |
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static int ohci_quirk_nec(struct usb_hcd *hcd) |
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{ |
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struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
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ohci->flags |= OHCI_QUIRK_NEC; |
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INIT_WORK(&ohci->nec_work, ohci_quirk_nec_worker); |
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ohci_dbg (ohci, "enabled NEC chipset lost interrupt quirk\n"); |
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return 0; |
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} |
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static int ohci_quirk_amd700(struct usb_hcd *hcd) |
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{ |
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struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
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if (usb_amd_quirk_pll_check()) |
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ohci->flags |= OHCI_QUIRK_AMD_PLL; |
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/* SB800 needs pre-fetch fix */ |
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if (usb_amd_prefetch_quirk()) { |
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ohci->flags |= OHCI_QUIRK_AMD_PREFETCH; |
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ohci_dbg(ohci, "enabled AMD prefetch quirk\n"); |
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} |
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ohci->flags |= OHCI_QUIRK_GLOBAL_SUSPEND; |
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return 0; |
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} |
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static int ohci_quirk_qemu(struct usb_hcd *hcd) |
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{ |
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struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
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ohci->flags |= OHCI_QUIRK_QEMU; |
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ohci_dbg(ohci, "enabled qemu quirk\n"); |
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return 0; |
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} |
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/* List of quirks for OHCI */ |
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static const struct pci_device_id ohci_pci_quirks[] = { |
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{ |
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PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x740c), |
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.driver_data = (unsigned long)ohci_quirk_amd756, |
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}, |
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{ |
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PCI_DEVICE(PCI_VENDOR_ID_OPTI, 0xc861), |
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.driver_data = (unsigned long)ohci_quirk_opti, |
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}, |
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{ |
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PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_ANY_ID), |
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.driver_data = (unsigned long)ohci_quirk_ns, |
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}, |
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{ |
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PCI_DEVICE(PCI_VENDOR_ID_COMPAQ, 0xa0f8), |
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.driver_data = (unsigned long)ohci_quirk_zfmicro, |
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}, |
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{ |
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PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, 0x01b6), |
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.driver_data = (unsigned long)ohci_quirk_toshiba_scc, |
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}, |
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{ |
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PCI_DEVICE(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB), |
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.driver_data = (unsigned long)ohci_quirk_nec, |
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}, |
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{ |
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/* Toshiba portege 4000 */ |
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.vendor = PCI_VENDOR_ID_AL, |
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.device = 0x5237, |
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.subvendor = PCI_VENDOR_ID_TOSHIBA, |
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.subdevice = 0x0004, |
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.driver_data = (unsigned long) broken_suspend, |
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}, |
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{ |
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PCI_DEVICE(PCI_VENDOR_ID_ITE, 0x8152), |
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.driver_data = (unsigned long) broken_suspend, |
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}, |
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{ |
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PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4397), |
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.driver_data = (unsigned long)ohci_quirk_amd700, |
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}, |
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{ |
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PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4398), |
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.driver_data = (unsigned long)ohci_quirk_amd700, |
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}, |
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{ |
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PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4399), |
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.driver_data = (unsigned long)ohci_quirk_amd700, |
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}, |
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{ |
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.vendor = PCI_VENDOR_ID_APPLE, |
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.device = 0x003f, |
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.subvendor = PCI_SUBVENDOR_ID_REDHAT_QUMRANET, |
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.subdevice = PCI_SUBDEVICE_ID_QEMU, |
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.driver_data = (unsigned long)ohci_quirk_qemu, |
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}, |
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{}, |
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}; |
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static int ohci_pci_reset (struct usb_hcd *hcd) |
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{ |
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struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
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struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
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int ret = 0; |
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if (hcd->self.controller) { |
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const struct pci_device_id *quirk_id; |
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quirk_id = pci_match_id(ohci_pci_quirks, pdev); |
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if (quirk_id != NULL) { |
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int (*quirk)(struct usb_hcd *ohci); |
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quirk = (void *)quirk_id->driver_data; |
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ret = quirk(hcd); |
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} |
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} |
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if (ret == 0) |
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ret = ohci_setup(hcd); |
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/* |
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* After ohci setup RWC may not be set for add-in PCI cards. |
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* This transfers PCI PM wakeup capabilities. |
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*/ |
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if (device_can_wakeup(&pdev->dev)) |
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ohci->hc_control |= OHCI_CTRL_RWC; |
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return ret; |
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} |
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static struct hc_driver __read_mostly ohci_pci_hc_driver; |
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static const struct ohci_driver_overrides pci_overrides __initconst = { |
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.product_desc = "OHCI PCI host controller", |
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.reset = ohci_pci_reset, |
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}; |
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static const struct pci_device_id pci_ids[] = { { |
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/* handle any USB OHCI controller */ |
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PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_OHCI, ~0), |
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}, { |
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/* The device in the ConneXT I/O hub has no class reg */ |
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PCI_VDEVICE(STMICRO, PCI_DEVICE_ID_STMICRO_USB_OHCI), |
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}, { /* end: all zeroes */ } |
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}; |
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MODULE_DEVICE_TABLE (pci, pci_ids); |
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static int ohci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) |
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{ |
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return usb_hcd_pci_probe(dev, id, &ohci_pci_hc_driver); |
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} |
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/* pci driver glue; this is a "new style" PCI driver module */ |
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static struct pci_driver ohci_pci_driver = { |
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.name = hcd_name, |
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.id_table = pci_ids, |
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.probe = ohci_pci_probe, |
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.remove = usb_hcd_pci_remove, |
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.shutdown = usb_hcd_pci_shutdown, |
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#ifdef CONFIG_PM |
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.driver = { |
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.pm = &usb_hcd_pci_pm_ops |
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}, |
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#endif |
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}; |
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static int __init ohci_pci_init(void) |
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{ |
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if (usb_disabled()) |
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return -ENODEV; |
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pr_info("%s: " DRIVER_DESC "\n", hcd_name); |
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ohci_init_driver(&ohci_pci_hc_driver, &pci_overrides); |
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#ifdef CONFIG_PM |
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/* Entries for the PCI suspend/resume callbacks are special */ |
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ohci_pci_hc_driver.pci_suspend = ohci_suspend; |
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ohci_pci_hc_driver.pci_resume = ohci_resume; |
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#endif |
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return pci_register_driver(&ohci_pci_driver); |
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} |
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module_init(ohci_pci_init); |
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static void __exit ohci_pci_cleanup(void) |
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{ |
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pci_unregister_driver(&ohci_pci_driver); |
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} |
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module_exit(ohci_pci_cleanup); |
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MODULE_DESCRIPTION(DRIVER_DESC); |
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MODULE_LICENSE("GPL"); |
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MODULE_SOFTDEP("pre: ehci_pci");
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