| /* |
| * 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 Rusell King et al. |
| * |
| * This file is licenced under the GPL. |
| */ |
| |
| #include <asm/hardware.h> |
| #include <asm/mach-types.h> |
| #include <asm/arch/assabet.h> |
| #include <asm/arch/badge4.h> |
| #include <asm/hardware/sa1111.h> |
| |
| #ifndef CONFIG_SA1111 |
| #error "This file is SA-1111 bus glue. CONFIG_SA1111 must be defined." |
| #endif |
| |
| extern int usb_disabled(void); |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static void sa1111_start_hc(struct sa1111_dev *dev) |
| { |
| unsigned int usb_rst = 0; |
| |
| printk(KERN_DEBUG __FILE__ |
| ": starting SA-1111 OHCI USB Controller\n"); |
| |
| #ifdef CONFIG_SA1100_BADGE4 |
| if (machine_is_badge4()) { |
| badge4_set_5V(BADGE4_5V_USB, 1); |
| } |
| #endif |
| |
| 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 + SA1111_USB_RESET); |
| |
| /* |
| * Now, carefully enable the USB clock, and take |
| * the USB host controller out of reset. |
| */ |
| sa1111_enable_device(dev); |
| udelay(11); |
| sa1111_writel(usb_rst, dev->mapbase + SA1111_USB_RESET); |
| } |
| |
| static void sa1111_stop_hc(struct sa1111_dev *dev) |
| { |
| unsigned int usb_rst; |
| printk(KERN_DEBUG __FILE__ |
| ": stopping SA-1111 OHCI USB Controller\n"); |
| |
| /* |
| * Put the USB host controller into reset. |
| */ |
| usb_rst = sa1111_readl(dev->mapbase + SA1111_USB_RESET); |
| sa1111_writel(usb_rst | USB_RESET_FORCEIFRESET | USB_RESET_FORCEHCRESET, |
| dev->mapbase + SA1111_USB_RESET); |
| |
| /* |
| * Stop the USB clock. |
| */ |
| sa1111_disable_device(dev); |
| |
| #ifdef CONFIG_SA1100_BADGE4 |
| if (machine_is_badge4()) { |
| /* Disable power to the USB bus */ |
| badge4_set_5V(BADGE4_5V_USB, 0); |
| } |
| #endif |
| } |
| |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| #if 0 |
| static void dump_hci_status(struct usb_hcd *hcd, const char *label) |
| { |
| unsigned long status = sa1111_readl(hcd->regs + SA1111_USB_STATUS); |
| |
| dbg ("%s USB_STATUS = { %s%s%s%s%s}", 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 |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* configure so an HC device and id are always provided */ |
| /* always called with process context; sleeping is OK */ |
| |
| |
| /** |
| * usb_hcd_sa1111_probe - initialize SA-1111-based HCDs |
| * Context: !in_interrupt() |
| * |
| * Allocates basic resources for this USB host controller, and |
| * then invokes the start() method for the HCD associated with it |
| * through the hotplug entry's driver_data. |
| * |
| * Store this function in the HCD's struct pci_driver as probe(). |
| */ |
| int usb_hcd_sa1111_probe (const struct hc_driver *driver, |
| struct sa1111_dev *dev) |
| { |
| struct usb_hcd *hcd; |
| int retval; |
| |
| hcd = usb_create_hcd (driver, &dev->dev, "sa1111"); |
| if (!hcd) |
| return -ENOMEM; |
| hcd->rsrc_start = dev->res.start; |
| hcd->rsrc_len = dev->res.end - dev->res.start + 1; |
| |
| if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { |
| dbg("request_mem_region failed"); |
| retval = -EBUSY; |
| goto err1; |
| } |
| hcd->regs = dev->mapbase; |
| |
| sa1111_start_hc(dev); |
| ohci_hcd_init(hcd_to_ohci(hcd)); |
| |
| retval = usb_add_hcd(hcd, dev->irq[1], SA_INTERRUPT); |
| if (retval == 0) |
| return retval; |
| |
| sa1111_stop_hc(dev); |
| release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| err1: |
| usb_put_hcd(hcd); |
| return retval; |
| } |
| |
| |
| /* may be called without controller electrically present */ |
| /* may be called with controller, bus, and devices active */ |
| |
| /** |
| * usb_hcd_sa1111_remove - shutdown processing for SA-1111-based HCDs |
| * @dev: USB Host Controller being removed |
| * Context: !in_interrupt() |
| * |
| * Reverses the effect of usb_hcd_sa1111_probe(), first invoking |
| * the HCD's stop() method. It is always called from a thread |
| * context, normally "rmmod", "apmd", or something similar. |
| * |
| */ |
| void usb_hcd_sa1111_remove (struct usb_hcd *hcd, struct sa1111_dev *dev) |
| { |
| usb_remove_hcd(hcd); |
| sa1111_stop_hc(dev); |
| release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| usb_put_hcd(hcd); |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static int __devinit |
| ohci_sa1111_start (struct usb_hcd *hcd) |
| { |
| struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| int ret; |
| |
| if ((ret = ohci_init(ohci)) < 0) |
| return ret; |
| |
| if ((ret = ohci_run (ohci)) < 0) { |
| err ("can't start %s", hcd->self.bus_name); |
| ohci_stop (hcd); |
| return ret; |
| } |
| return 0; |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| 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 |
| */ |
| .start = ohci_sa1111_start, |
| #ifdef CONFIG_PM |
| /* suspend: ohci_sa1111_suspend, -- tbd */ |
| /* resume: ohci_sa1111_resume, -- tbd */ |
| #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_PM |
| .hub_suspend = ohci_hub_suspend, |
| .hub_resume = ohci_hub_resume, |
| #endif |
| }; |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static int ohci_hcd_sa1111_drv_probe(struct sa1111_dev *dev) |
| { |
| int ret; |
| |
| if (usb_disabled()) |
| return -ENODEV; |
| |
| ret = usb_hcd_sa1111_probe(&ohci_sa1111_hc_driver, dev); |
| return ret; |
| } |
| |
| static int ohci_hcd_sa1111_drv_remove(struct sa1111_dev *dev) |
| { |
| struct usb_hcd *hcd = sa1111_get_drvdata(dev); |
| |
| usb_hcd_sa1111_remove(hcd, dev); |
| return 0; |
| } |
| |
| static struct sa1111_driver ohci_hcd_sa1111_driver = { |
| .drv = { |
| .name = "sa1111-ohci", |
| }, |
| .devid = SA1111_DEVID_USB, |
| .probe = ohci_hcd_sa1111_drv_probe, |
| .remove = ohci_hcd_sa1111_drv_remove, |
| }; |
| |
| static int __init ohci_hcd_sa1111_init (void) |
| { |
| dbg (DRIVER_INFO " (SA-1111)"); |
| dbg ("block sizes: ed %d td %d", |
| sizeof (struct ed), sizeof (struct td)); |
| |
| return sa1111_driver_register(&ohci_hcd_sa1111_driver); |
| } |
| |
| static void __exit ohci_hcd_sa1111_cleanup (void) |
| { |
| sa1111_driver_unregister(&ohci_hcd_sa1111_driver); |
| } |
| |
| module_init (ohci_hcd_sa1111_init); |
| module_exit (ohci_hcd_sa1111_cleanup); |