123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265 |
- /*
- * 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>
- * (C) Copyright 2002 Hewlett-Packard Company
- *
- * SA1111 Bus Glue
- *
- * Written by Christopher Hoover <ch@hpl.hp.com>
- * Based on fragments of previous driver by Russell King et al.
- *
- * This file is licenced under the GPL.
- */
- #include <mach/hardware.h>
- #include <asm/mach-types.h>
- #include <mach/assabet.h>
- #include <asm/hardware/sa1111.h>
- #ifndef CONFIG_SA1111
- #error "This file is SA-1111 bus glue. CONFIG_SA1111 must be defined."
- #endif
- #define USB_STATUS 0x0118
- #define USB_RESET 0x011c
- #define USB_IRQTEST 0x0120
- #define USB_RESET_FORCEIFRESET (1 << 0)
- #define USB_RESET_FORCEHCRESET (1 << 1)
- #define USB_RESET_CLKGENRESET (1 << 2)
- #define USB_RESET_SIMSCALEDOWN (1 << 3)
- #define USB_RESET_USBINTTEST (1 << 4)
- #define USB_RESET_SLEEPSTBYEN (1 << 5)
- #define USB_RESET_PWRSENSELOW (1 << 6)
- #define USB_RESET_PWRCTRLLOW (1 << 7)
- #define USB_STATUS_IRQHCIRMTWKUP (1 << 7)
- #define USB_STATUS_IRQHCIBUFFACC (1 << 8)
- #define USB_STATUS_NIRQHCIM (1 << 9)
- #define USB_STATUS_NHCIMFCLR (1 << 10)
- #define USB_STATUS_USBPWRSENSE (1 << 11)
- #if 0
- static void dump_hci_status(struct usb_hcd *hcd, const char *label)
- {
- unsigned long status = sa1111_readl(hcd->regs + USB_STATUS);
- printk(KERN_DEBUG "%s USB_STATUS = { %s%s%s%s%s}\n", label,
- ((status & USB_STATUS_IRQHCIRMTWKUP) ? "IRQHCIRMTWKUP " : ""),
- ((status & USB_STATUS_IRQHCIBUFFACC) ? "IRQHCIBUFFACC " : ""),
- ((status & USB_STATUS_NIRQHCIM) ? "" : "IRQHCIM "),
- ((status & USB_STATUS_NHCIMFCLR) ? "" : "HCIMFCLR "),
- ((status & USB_STATUS_USBPWRSENSE) ? "USBPWRSENSE " : ""));
- }
- #endif
- static int ohci_sa1111_reset(struct usb_hcd *hcd)
- {
- struct ohci_hcd *ohci = hcd_to_ohci(hcd);
- ohci_hcd_init(ohci);
- return ohci_init(ohci);
- }
- static int ohci_sa1111_start(struct usb_hcd *hcd)
- {
- struct ohci_hcd *ohci = hcd_to_ohci(hcd);
- int ret;
- ret = ohci_run(ohci);
- if (ret < 0) {
- ohci_err(ohci, "can't start\n");
- ohci_stop(hcd);
- }
- return ret;
- }
- static const struct hc_driver ohci_sa1111_hc_driver = {
- .description = hcd_name,
- .product_desc = "SA-1111 OHCI",
- .hcd_priv_size = sizeof(struct ohci_hcd),
- /*
- * generic hardware linkage
- */
- .irq = ohci_irq,
- .flags = HCD_USB11 | HCD_MEMORY,
- /*
- * basic lifecycle operations
- */
- .reset = ohci_sa1111_reset,
- .start = ohci_sa1111_start,
- .stop = ohci_stop,
- .shutdown = ohci_shutdown,
- /*
- * 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_PM
- .bus_suspend = ohci_bus_suspend,
- .bus_resume = ohci_bus_resume,
- #endif
- .start_port_reset = ohci_start_port_reset,
- };
- static int sa1111_start_hc(struct sa1111_dev *dev)
- {
- unsigned int usb_rst = 0;
- int ret;
- dev_dbg(&dev->dev, "starting SA-1111 OHCI USB Controller\n");
- if (machine_is_xp860() ||
- machine_has_neponset() ||
- machine_is_pfs168() ||
- machine_is_badge4())
- usb_rst = USB_RESET_PWRSENSELOW | USB_RESET_PWRCTRLLOW;
- /*
- * Configure the power sense and control lines. Place the USB
- * host controller in reset.
- */
- sa1111_writel(usb_rst | USB_RESET_FORCEIFRESET | USB_RESET_FORCEHCRESET,
- dev->mapbase + USB_RESET);
- /*
- * Now, carefully enable the USB clock, and take
- * the USB host controller out of reset.
- */
- ret = sa1111_enable_device(dev);
- if (ret == 0) {
- udelay(11);
- sa1111_writel(usb_rst, dev->mapbase + USB_RESET);
- }
- return ret;
- }
- static void sa1111_stop_hc(struct sa1111_dev *dev)
- {
- unsigned int usb_rst;
- dev_dbg(&dev->dev, "stopping SA-1111 OHCI USB Controller\n");
- /*
- * Put the USB host controller into reset.
- */
- usb_rst = sa1111_readl(dev->mapbase + USB_RESET);
- sa1111_writel(usb_rst | USB_RESET_FORCEIFRESET | USB_RESET_FORCEHCRESET,
- dev->mapbase + USB_RESET);
- /*
- * Stop the USB clock.
- */
- sa1111_disable_device(dev);
- }
- /**
- * ohci_hcd_sa1111_probe - initialize SA-1111-based HCDs
- *
- * Allocates basic resources for this USB host controller, and
- * then invokes the start() method for the HCD associated with it.
- */
- static int ohci_hcd_sa1111_probe(struct sa1111_dev *dev)
- {
- struct usb_hcd *hcd;
- int ret;
- if (usb_disabled())
- return -ENODEV;
- /*
- * We don't call dma_set_mask_and_coherent() here because the
- * DMA mask has already been appropraitely setup by the core
- * SA-1111 bus code (which includes bug workarounds.)
- */
- hcd = usb_create_hcd(&ohci_sa1111_hc_driver, &dev->dev, "sa1111");
- if (!hcd)
- return -ENOMEM;
- hcd->rsrc_start = dev->res.start;
- hcd->rsrc_len = resource_size(&dev->res);
- if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
- dev_dbg(&dev->dev, "request_mem_region failed\n");
- ret = -EBUSY;
- goto err1;
- }
- hcd->regs = dev->mapbase;
- ret = sa1111_start_hc(dev);
- if (ret)
- goto err2;
- ret = usb_add_hcd(hcd, dev->irq[1], 0);
- if (ret == 0) {
- device_wakeup_enable(hcd->self.controller);
- return ret;
- }
- sa1111_stop_hc(dev);
- err2:
- release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
- err1:
- usb_put_hcd(hcd);
- return ret;
- }
- /**
- * ohci_hcd_sa1111_remove - shutdown processing for SA-1111-based HCDs
- * @dev: USB Host Controller being removed
- *
- * Reverses the effect of ohci_hcd_sa1111_probe(), first invoking
- * the HCD's stop() method.
- */
- static int ohci_hcd_sa1111_remove(struct sa1111_dev *dev)
- {
- struct usb_hcd *hcd = sa1111_get_drvdata(dev);
- usb_remove_hcd(hcd);
- sa1111_stop_hc(dev);
- release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
- usb_put_hcd(hcd);
- return 0;
- }
- static void ohci_hcd_sa1111_shutdown(struct sa1111_dev *dev)
- {
- struct usb_hcd *hcd = sa1111_get_drvdata(dev);
- if (test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {
- hcd->driver->shutdown(hcd);
- sa1111_stop_hc(dev);
- }
- }
- static struct sa1111_driver ohci_hcd_sa1111_driver = {
- .drv = {
- .name = "sa1111-ohci",
- .owner = THIS_MODULE,
- },
- .devid = SA1111_DEVID_USB,
- .probe = ohci_hcd_sa1111_probe,
- .remove = ohci_hcd_sa1111_remove,
- .shutdown = ohci_hcd_sa1111_shutdown,
- };
|