Initial import

1 files changed, 315 insertions, 0 deletions

diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
new file mode 100644
index 000000000..bb1509675
--- /dev/null
+++ b/drivers/usb/host/ohci-pci.c
@@ -0,0 +1,315 @@
+/*
+ * 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.
+ */
+
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+#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");