271 lines
6.5 KiB
C
271 lines
6.5 KiB
C
/*
|
|
* 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 <mach/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 "%s: starting SA-1111 OHCI USB Controller\n",
|
|
__FILE__);
|
|
|
|
#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 "%s: stopping SA-1111 OHCI USB Controller\n",
|
|
__FILE__);
|
|
|
|
/*
|
|
* 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 = resource_size(&dev->res);
|
|
|
|
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], IRQF_DISABLED);
|
|
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,
|
|
.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
|
|
.bus_suspend = ohci_bus_suspend,
|
|
.bus_resume = ohci_bus_resume,
|
|
#endif
|
|
.start_port_reset = ohci_start_port_reset,
|
|
};
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
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,
|
|
};
|
|
|