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// SPDX-License-Identifier: GPL-1.0+/* * OHCI HCD (Host Controller Driver) for USB. * * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> * * [ 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. */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()