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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/usb/host/ohci-pci.c
downloadlinux-next-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/usb/host/ohci-pci.c')
-rw-r--r--drivers/usb/host/ohci-pci.c264
1 files changed, 264 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
new file mode 100644
index 000000000000..b611582e6bcf
--- /dev/null
+++ b/drivers/usb/host/ohci-pci.c
@@ -0,0 +1,264 @@
+/*
+ * 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.
+ */
+
+#ifdef CONFIG_PMAC_PBOOK
+#include <asm/machdep.h>
+#include <asm/pmac_feature.h>
+#include <asm/pci-bridge.h>
+#include <asm/prom.h>
+#ifndef CONFIG_PM
+# define CONFIG_PM
+#endif
+#endif
+
+#ifndef CONFIG_PCI
+#error "This file is PCI bus glue. CONFIG_PCI must be defined."
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+static int
+ohci_pci_reset (struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci (hcd);
+
+ ohci_hcd_init (ohci);
+ return ohci_init (ohci);
+}
+
+static int __devinit
+ohci_pci_start (struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci (hcd);
+ int ret;
+
+ if(hcd->self.controller && hcd->self.controller->bus == &pci_bus_type) {
+ struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
+
+ /* AMD 756, for most chips (early revs), corrupts register
+ * values on read ... so enable the vendor workaround.
+ */
+ if (pdev->vendor == PCI_VENDOR_ID_AMD
+ && pdev->device == 0x740c) {
+ ohci->flags = OHCI_QUIRK_AMD756;
+ ohci_info (ohci, "AMD756 erratum 4 workaround\n");
+ // also somewhat erratum 10 (suspend/resume issues)
+ }
+
+ /* FIXME for some of the early AMD 760 southbridges, OHCI
+ * won't work at all. blacklist them.
+ */
+
+ /* 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 ...)
+ */
+ else if (pdev->vendor == PCI_VENDOR_ID_OPTI
+ && pdev->device == 0xc861) {
+ ohci_info (ohci,
+ "WARNING: OPTi workarounds unavailable\n");
+ }
+
+ /* 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.
+ */
+ else if (pdev->vendor == PCI_VENDOR_ID_NS) {
+ struct pci_dev *b;
+
+ b = pci_find_slot (pdev->bus->number,
+ PCI_DEVFN (PCI_SLOT (pdev->devfn), 1));
+ if (b && b->device == PCI_DEVICE_ID_NS_87560_LIO
+ && b->vendor == PCI_VENDOR_ID_NS) {
+ ohci->flags |= OHCI_QUIRK_SUPERIO;
+ ohci_info (ohci, "Using NSC SuperIO setup\n");
+ }
+ }
+ }
+
+ /* NOTE: there may have already been a first reset, to
+ * keep bios/smm irqs from making trouble
+ */
+ if ((ret = ohci_run (ohci)) < 0) {
+ ohci_err (ohci, "can't start\n");
+ ohci_stop (hcd);
+ return ret;
+ }
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int ohci_pci_suspend (struct usb_hcd *hcd, u32 state)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci (hcd);
+
+ /* suspend root hub, hoping it keeps power during suspend */
+ if (time_before (jiffies, ohci->next_statechange))
+ msleep (100);
+
+#ifdef CONFIG_USB_SUSPEND
+ (void) usb_suspend_device (hcd->self.root_hub, state);
+#else
+ usb_lock_device (hcd->self.root_hub);
+ (void) ohci_hub_suspend (hcd);
+ usb_unlock_device (hcd->self.root_hub);
+#endif
+
+ /* let things settle down a bit */
+ msleep (100);
+
+#ifdef CONFIG_PMAC_PBOOK
+ if (_machine == _MACH_Pmac) {
+ struct device_node *of_node;
+
+ /* Disable USB PAD & cell clock */
+ of_node = pci_device_to_OF_node (to_pci_dev(hcd->self.controller));
+ if (of_node)
+ pmac_call_feature(PMAC_FTR_USB_ENABLE, of_node, 0, 0);
+ }
+#endif /* CONFIG_PMAC_PBOOK */
+ return 0;
+}
+
+
+static int ohci_pci_resume (struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci (hcd);
+ int retval = 0;
+
+#ifdef CONFIG_PMAC_PBOOK
+ if (_machine == _MACH_Pmac) {
+ struct device_node *of_node;
+
+ /* Re-enable USB PAD & cell clock */
+ of_node = pci_device_to_OF_node (to_pci_dev(hcd->self.controller));
+ if (of_node)
+ pmac_call_feature (PMAC_FTR_USB_ENABLE, of_node, 0, 1);
+ }
+#endif /* CONFIG_PMAC_PBOOK */
+
+ /* resume root hub */
+ if (time_before (jiffies, ohci->next_statechange))
+ msleep (100);
+#ifdef CONFIG_USB_SUSPEND
+ /* get extra cleanup even if remote wakeup isn't in use */
+ retval = usb_resume_device (hcd->self.root_hub);
+#else
+ usb_lock_device (hcd->self.root_hub);
+ retval = ohci_hub_resume (hcd);
+ usb_unlock_device (hcd->self.root_hub);
+#endif
+
+ return retval;
+}
+
+#endif /* CONFIG_PM */
+
+
+/*-------------------------------------------------------------------------*/
+
+static const struct hc_driver ohci_pci_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "OHCI Host Controller",
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ohci_irq,
+ .flags = HCD_MEMORY | HCD_USB11,
+
+ /*
+ * basic lifecycle operations
+ */
+ .reset = ohci_pci_reset,
+ .start = ohci_pci_start,
+#ifdef CONFIG_PM
+ .suspend = ohci_pci_suspend,
+ .resume = ohci_pci_resume,
+#endif
+ .stop = ohci_stop,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ohci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ohci_hub_status_data,
+ .hub_control = ohci_hub_control,
+#ifdef CONFIG_USB_SUSPEND
+ .hub_suspend = ohci_hub_suspend,
+ .hub_resume = ohci_hub_resume,
+#endif
+ .start_port_reset = ohci_start_port_reset,
+};
+
+/*-------------------------------------------------------------------------*/
+
+
+static const struct pci_device_id pci_ids [] = { {
+ /* handle any USB OHCI controller */
+ PCI_DEVICE_CLASS((PCI_CLASS_SERIAL_USB << 8) | 0x10, ~0),
+ .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,
+
+#ifdef CONFIG_PM
+ .suspend = usb_hcd_pci_suspend,
+ .resume = usb_hcd_pci_resume,
+#endif
+};
+
+
+static int __init ohci_hcd_pci_init (void)
+{
+ printk (KERN_DEBUG "%s: " DRIVER_INFO " (PCI)\n", hcd_name);
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_debug ("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
+ sizeof (struct ed), sizeof (struct td));
+ return pci_register_driver (&ohci_pci_driver);
+}
+module_init (ohci_hcd_pci_init);
+
+/*-------------------------------------------------------------------------*/
+
+static void __exit ohci_hcd_pci_cleanup (void)
+{
+ pci_unregister_driver (&ohci_pci_driver);
+}
+module_exit (ohci_hcd_pci_cleanup);