- 根目录:
- drivers
- usb
- host
- ohci-pci.c
#ifndef CONFIG_PCI
#error "This file is PCI bus glue. CONFIG_PCI must be defined."
#endif
#include <linux/pci.h>
#include <linux/io.h>
static int broken_suspend(struct usb_hcd *hcd)
{
device_init_wakeup(&hcd->self.root_hub->dev, 0);
return 0;
}
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");
return broken_suspend(hcd);
}
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;
}
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;
}
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;
}
static int ohci_quirk_toshiba_scc(struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
#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
}
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_init(ohci);
if (status != 0) {
ohci_err(ohci, "Restarting NEC controller failed in %s, %d\n",
"ohci_init", status);
return;
}
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);
struct pci_dev *amd_smbus_dev;
u8 rev;
if (usb_amd_find_chipset_info())
ohci->flags |= OHCI_QUIRK_AMD_PLL;
amd_smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI,
PCI_DEVICE_ID_ATI_SBX00_SMBUS, NULL);
if (!amd_smbus_dev)
return 0;
rev = amd_smbus_dev->revision;
if ((rev >= 0x40) && (rev <= 0x4f)) {
ohci->flags |= OHCI_QUIRK_AMD_PREFETCH;
ohci_dbg(ohci, "enabled AMD prefetch quirk\n");
}
pci_dev_put(amd_smbus_dev);
amd_smbus_dev = NULL;
return 0;
}
static int ohci_quirk_nvidia_shutdown(struct usb_hcd *hcd)
{
struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_USB 0x026d
if (pdev->device < PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_USB) {
ohci->flags |= OHCI_QUIRK_SHUTDOWN;
ohci_dbg(ohci, "enabled nVidia shutdown quirk\n");
}
return 0;
}
static void sb800_prefetch(struct ohci_hcd *ohci, int on)
{
struct pci_dev *pdev;
u16 misc;
pdev = to_pci_dev(ohci_to_hcd(ohci)->self.controller);
pci_read_config_word(pdev, 0x50, &misc);
if (on == 0)
pci_write_config_word(pdev, 0x50, misc & 0xfcff);
else
pci_write_config_word(pdev, 0x50, misc | 0x0300);
}
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,
},
{
.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,
},
{
PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
.driver_data = (unsigned long) ohci_quirk_nvidia_shutdown,
},
{},
};
static int ohci_pci_reset (struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
int ret = 0;
if (hcd->self.controller) {
struct pci_dev *pdev = to_pci_dev(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) {
ohci_hcd_init (ohci);
return ohci_init (ohci);
}
return ret;
}
static int __devinit ohci_pci_start (struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
int ret;
#ifdef CONFIG_PM
if (hcd->self.controller) {
struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
if (device_can_wakeup(&pdev->dev))
ohci->hc_control |= OHCI_CTRL_RWC;
}
#endif
ret = ohci_run (ohci);
if (ret < 0) {
ohci_err (ohci, "can't start\n");
ohci_stop (hcd);
}
return ret;
}
#ifdef CONFIG_PM
static int ohci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
unsigned long flags;
int rc = 0;
spin_lock_irqsave (&ohci->lock, flags);
if (hcd->state != HC_STATE_SUSPENDED) {
rc = -EINVAL;
goto bail;
}
ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
(void)ohci_readl(ohci, &ohci->regs->intrdisable);
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
bail:
spin_unlock_irqrestore (&ohci->lock, flags);
return rc;
}
static int ohci_pci_resume(struct usb_hcd *hcd, bool hibernated)
{
set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
if (hibernated)
ohci_usb_reset(hcd_to_ohci(hcd));
ohci_finish_controller_resume(hcd);
return 0;
}
#endif
static const struct hc_driver ohci_pci_hc_driver = {
.description = hcd_name,
.product_desc = "OHCI Host Controller",
.hcd_priv_size = sizeof(struct ohci_hcd),
.irq = ohci_irq,
.flags = HCD_MEMORY | HCD_USB11,
.reset = ohci_pci_reset,
.start = ohci_pci_start,
.stop = ohci_stop,
.shutdown = ohci_shutdown,
#ifdef CONFIG_PM
.pci_suspend = ohci_pci_suspend,
.pci_resume = ohci_pci_resume,
#endif
.urb_enqueue = ohci_urb_enqueue,
.urb_dequeue = ohci_urb_dequeue,
.endpoint_disable = ohci_endpoint_disable,
.get_frame_number = ohci_get_frame,
.hub_status_data = ohci_hub_status_data,
.hub_control = ohci_hub_control,
#ifdef CONFIG_PM
.bus_suspend = ohci_bus_suspend,
.bus_resume = ohci_bus_resume,
#endif
.start_port_reset = ohci_start_port_reset,
};
static const struct pci_device_id pci_ids [] = { {
PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_OHCI, ~0),
.driver_data = (unsigned long) &ohci_pci_hc_driver,
}, { }
};
MODULE_DEVICE_TABLE (pci, pci_ids);
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_SLEEP
.driver = {
.pm = &usb_hcd_pci_pm_ops
},
#endif
};
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