/** Initialize hcd_t structure.
* Initializes device and endpoint managers. Sets data and hook pointer to NULL.
*
* @param hcd hcd_t structure to initialize, non-null.
* @param max_speed Maximum supported USB speed (full, high).
* @param bandwidth Available bandwidth, passed to endpoint manager.
* @param bw_count Bandwidth compute function, passed to endpoint manager.
*/
void hcd_init(hcd_t *hcd, usb_speed_t max_speed, size_t bandwidth,
bw_count_func_t bw_count)
{
assert(hcd);
usb_bus_init(&hcd->bus, bandwidth, bw_count, max_speed);
hcd_set_implementation(hcd, NULL, NULL);
}
/**
* usb_hcd_pci_probe - initialize PCI-based HCDs
* @dev: USB Host Controller being probed
* @id: pci hotplug id connecting controller to HCD framework
* Context: !in_interrupt()
*
* Allocates basic PCI 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_pci_probe (struct pci_dev *dev, const struct pci_device_id *id)
{
struct hc_driver *driver;
unsigned long resource, len;
void __iomem *base;
struct usb_hcd *hcd;
int retval, region;
char buf [8], *bufp = buf;
if (usb_disabled())
return -ENODEV;
if (!id || !(driver = (struct hc_driver *) id->driver_data))
return -EINVAL;
if (pci_enable_device (dev) < 0)
return -ENODEV;
dev->current_state = 0;
dev->dev.power.power_state = 0;
if (!dev->irq) {
dev_err (&dev->dev,
"Found HC with no IRQ. Check BIOS/PCI %s setup!\n",
pci_name(dev));
retval = -ENODEV;
goto done;
}
if (driver->flags & HCD_MEMORY) { // EHCI, OHCI
region = 0;
resource = pci_resource_start (dev, 0);
len = pci_resource_len (dev, 0);
if (!request_mem_region (resource, len, driver->description)) {
dev_dbg (&dev->dev, "controller already in use\n");
retval = -EBUSY;
goto done;
}
base = ioremap_nocache (resource, len);
if (base == NULL) {
dev_dbg (&dev->dev, "error mapping memory\n");
retval = -EFAULT;
clean_1:
release_mem_region (resource, len);
dev_err (&dev->dev, "init %s fail, %d\n",
pci_name(dev), retval);
goto done;
}
} else { // UHCI
resource = len = 0;
for (region = 0; region < PCI_ROM_RESOURCE; region++) {
if (!(pci_resource_flags (dev, region) & IORESOURCE_IO))
continue;
resource = pci_resource_start (dev, region);
len = pci_resource_len (dev, region);
if (request_region (resource, len,
driver->description))
break;
}
if (region == PCI_ROM_RESOURCE) {
dev_dbg (&dev->dev, "no i/o regions available\n");
retval = -EBUSY;
goto done;
}
base = (void __iomem *) resource;
}
// driver->reset(), later on, will transfer device from
// control by SMM/BIOS to control by Linux (if needed)
hcd = driver->hcd_alloc ();
if (hcd == NULL) {
dev_dbg (&dev->dev, "hcd alloc fail\n");
retval = -ENOMEM;
clean_2:
if (driver->flags & HCD_MEMORY) {
iounmap (base);
goto clean_1;
} else {
release_region (resource, len);
dev_err (&dev->dev, "init %s fail, %d\n",
pci_name(dev), retval);
goto done;
}
}
// hcd zeroed everything
hcd->regs = base;
hcd->region = region;
pci_set_drvdata (dev, hcd);
hcd->driver = driver;
hcd->description = driver->description;
hcd->self.bus_name = pci_name(dev);
#ifdef CONFIG_PCI_NAMES
hcd->product_desc = dev->pretty_name;
#else
if (hcd->product_desc == NULL)
hcd->product_desc = "USB Host Controller";
#endif
hcd->self.controller = &dev->dev;
if ((retval = hcd_buffer_create (hcd)) != 0) {
clean_3:
kfree (hcd);
goto clean_2;
}
dev_info (hcd->self.controller, "%s\n", hcd->product_desc);
/* till now HC has been in an indeterminate state ... */
if (driver->reset && (retval = driver->reset (hcd)) < 0) {
dev_err (hcd->self.controller, "can't reset\n");
goto clean_3;
}
hcd->state = USB_STATE_HALT;
pci_set_master (dev);
#ifndef __sparc__
sprintf (buf, "%d", dev->irq);
#else
bufp = __irq_itoa(dev->irq);
#endif
retval = request_irq (dev->irq, usb_hcd_irq, SA_SHIRQ,
hcd->description, hcd);
if (retval != 0) {
dev_err (hcd->self.controller,
"request interrupt %s failed\n", bufp);
goto clean_3;
}
hcd->irq = dev->irq;
dev_info (hcd->self.controller, "irq %s, %s 0x%lx\n", bufp,
(driver->flags & HCD_MEMORY) ? "pci mem" : "io base",
resource);
usb_bus_init (&hcd->self);
hcd->self.op = &usb_hcd_operations;
hcd->self.release = &usb_hcd_release;
hcd->self.hcpriv = (void *) hcd;
init_timer (&hcd->rh_timer);
INIT_LIST_HEAD (&hcd->dev_list);
usb_register_bus (&hcd->self);
if ((retval = driver->start (hcd)) < 0) {
dev_err (hcd->self.controller, "init error %d\n", retval);
usb_hcd_pci_remove (dev);
}
done:
if (retval != 0)
pci_disable_device (dev);
return retval;
}
/**
* usb_hcd_pxa27x_probe - initialize pxa27x-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.
*
*/
int usb_hcd_pxa27x_probe (const struct hc_driver *driver,
struct usb_hcd **hcd_out,
struct platform_device *dev)
{
int retval;
struct usb_hcd *hcd = 0;
unsigned int *addr = NULL;
if (!request_mem_region(dev->resource[0].start,
dev->resource[0].end
- dev->resource[0].start + 1, hcd_name)) {
pr_debug("request_mem_region failed");
return -EBUSY;
}
pxa27x_start_hc(dev);
/* Select Power Management Mode */
pxa27x_ohci_select_pmm( PMM_PERPORT_MODE );
/* If choosing PMM_PERPORT_MODE, we should set the port power before we use it. */
if (pxa27x_ohci_set_port_power(1) < 0)
printk(KERN_ERR "Setting port 1 power failed.\n");
if (pxa27x_ohci_clear_port_power(2) < 0)
printk(KERN_ERR "Setting port 2 power failed.\n");
if (pxa27x_ohci_clear_port_power(3) < 0)
printk(KERN_ERR "Setting port 3 power failed.\n");
addr = ioremap(dev->resource[0].start,
dev->resource[0].end - dev->resource[0].start + 1);
if (!addr) {
pr_debug("ioremap failed");
retval = -ENOMEM;
goto err1;
}
hcd = driver->hcd_alloc ();
if (hcd == NULL){
pr_debug ("hcd_alloc failed");
retval = -ENOMEM;
goto err1;
}
if(dev->resource[1].flags != IORESOURCE_IRQ){
pr_debug ("resource[1] is not IORESOURCE_IRQ");
retval = -ENOMEM;
goto err1;
}
hcd->driver = (struct hc_driver *) driver;
hcd->description = driver->description;
hcd->irq = dev->resource[1].start;
hcd->regs = addr;
hcd->self.controller = &dev->dev;
retval = hcd_buffer_create (hcd);
if (retval != 0) {
pr_debug ("pool alloc fail");
goto err1;
}
retval = request_irq (hcd->irq, usb_hcd_irq, SA_INTERRUPT,
hcd->description, hcd);
if (retval != 0) {
pr_debug("request_irq(%d) failed with retval %d\n",hcd->irq,retval);
retval = -EBUSY;
goto err2;
}
pr_debug ("%s (pxa27x) at 0x%p, irq %d",
hcd->description, hcd->regs, hcd->irq);
usb_bus_init (&hcd->self);
hcd->self.op = &usb_hcd_operations;
hcd->self.hcpriv = (void *) hcd;
hcd->self.bus_name = "pxa27x";
hcd->product_desc = "PXA27x OHCI";
INIT_LIST_HEAD (&hcd->dev_list);
usb_register_bus (&hcd->self);
if ((retval = driver->start (hcd)) < 0) {
usb_hcd_pxa27x_remove(hcd, dev);
return retval;
}
*hcd_out = hcd;
return 0;
err2:
hcd_buffer_destroy (hcd);
if (hcd)
driver->hcd_free(hcd);
err1:
pxa27x_stop_hc(dev);
release_mem_region(dev->resource[0].start,
dev->resource[0].end
- dev->resource[0].start + 1);
return retval;
}
/**
* usb_hcd_pci_probe - initialize PCI-based HCDs
* @dev: USB Host Controller being probed
* @id: pci hotplug id connecting controller to HCD framework
* Context: !in_interrupt()
*
* Allocates basic PCI 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_pci_probe (struct pci_dev *dev, const struct pci_device_id *id)
{
struct hc_driver *driver;
unsigned long resource, len;
void *base;
struct usb_hcd *hcd;
int retval, region;
char buf [8], *bufp = buf;
if (usb_disabled())
return -ENODEV;
if (!id || !(driver = (struct hc_driver *) id->driver_data))
return -EINVAL;
if (pci_enable_device (dev) < 0)
return -ENODEV;
if (!dev->irq) {
err ("Found HC with no IRQ. Check BIOS/PCI %s setup!",
dev->slot_name);
return -ENODEV;
}
if (driver->flags & HCD_MEMORY) { // EHCI, OHCI
region = 0;
resource = pci_resource_start (dev, 0);
len = pci_resource_len (dev, 0);
if (!request_mem_region (resource, len, driver->description)) {
dbg ("controller already in use");
return -EBUSY;
}
base = ioremap_nocache (resource, len);
if (base == NULL) {
dbg ("error mapping memory");
retval = -EFAULT;
clean_1:
release_mem_region (resource, len);
err ("init %s fail, %d", dev->slot_name, retval);
return retval;
}
} else { // UHCI
resource = len = 0;
for (region = 0; region < PCI_ROM_RESOURCE; region++) {
if (!(pci_resource_flags (dev, region) & IORESOURCE_IO))
continue;
resource = pci_resource_start (dev, region);
len = pci_resource_len (dev, region);
if (request_region (resource, len,
driver->description))
break;
}
if (region == PCI_ROM_RESOURCE) {
dbg ("no i/o regions available");
return -EBUSY;
}
base = (void *) resource;
}
// driver->start(), later on, will transfer device from
// control by SMM/BIOS to control by Linux (if needed)
pci_set_master (dev);
hcd = driver->hcd_alloc ();
if (hcd == NULL){
dbg ("hcd alloc fail");
retval = -ENOMEM;
clean_2:
if (driver->flags & HCD_MEMORY) {
iounmap (base);
goto clean_1;
} else {
release_region (resource, len);
err ("init %s fail, %d", dev->slot_name, retval);
return retval;
}
}
pci_set_drvdata (dev, hcd);
hcd->driver = driver;
hcd->description = driver->description;
hcd->pdev = dev;
hcd->self.bus_name = dev->slot_name;
hcd->product_desc = dev->dev.name;
hcd->self.controller = &dev->dev;
hcd->controller = hcd->self.controller;
if ((retval = hcd_buffer_create (hcd)) != 0) {
clean_3:
driver->hcd_free (hcd);
goto clean_2;
}
dev_info (hcd->controller, "%s\n", hcd->product_desc);
#ifndef __sparc__
sprintf (buf, "%d", dev->irq);
#else
bufp = __irq_itoa(dev->irq);
#endif
if (request_irq (dev->irq, usb_hcd_irq, SA_SHIRQ, hcd->description, hcd)
!= 0) {
dev_err (hcd->controller,
"request interrupt %s failed\n", bufp);
retval = -EBUSY;
goto clean_3;
}
hcd->irq = dev->irq;
hcd->regs = base;
hcd->region = region;
dev_info (hcd->controller, "irq %s, %s %p\n", bufp,
(driver->flags & HCD_MEMORY) ? "pci mem" : "io base",
base);
usb_bus_init (&hcd->self);
hcd->self.op = &usb_hcd_operations;
hcd->self.hcpriv = (void *) hcd;
INIT_LIST_HEAD (&hcd->dev_list);
usb_register_bus (&hcd->self);
if ((retval = driver->start (hcd)) < 0)
usb_hcd_pci_remove (dev);
return retval;
}
/**
* usb_hcd_ppc_soc_probe - initialize On-Chip HCDs
* Context: !in_interrupt()
*
* Allocates basic resources for this USB host controller.
*
* Store this function in the HCD's struct pci_driver as probe().
*/
static int usb_hcd_ppc_soc_probe(struct hc_driver *driver,
struct platform_device *pdev)
{
int retval;
struct usb_hcd *hcd;
struct ehci_hcd *ehci;
struct resource *res;
unsigned long res_len;
int irq;
pr_debug("Initializing PPC-SOC EHCI USB Controller\n");
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
pr_debug(__FILE__ ": no irq\n");
return -ENODEV;
}
irq = res->start;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
pr_debug(__FILE__ ": no reg addr\n");
return -ENODEV;
}
hcd = driver->hcd_alloc();
if (!hcd)
return -ENOMEM;
ehci = hcd_to_ehci(hcd);
ehci->big_endian = 1;
res_len = res->end - res->start + 1;
if (!request_mem_region(res->start, res_len, hcd_name)) {
pr_debug(__FILE__ ": request_mem_region failed\n");
retval = -EBUSY;
goto err1;
}
hcd->regs = ioremap64(res->start, res_len);
if (!hcd->regs) {
pr_debug(__FILE__ ": ioremap failed\n");
retval = -ENOMEM;
goto err2;
}
dev_set_drvdata(&pdev->dev, hcd);
hcd->driver = driver;
hcd->description = driver->description;
hcd->self.bus_name = pdev->dev.bus_id;
hcd->product_desc = "PPC-SOC EHCI USB";
hcd->self.controller = &pdev->dev;
if ((retval = hcd_buffer_create(hcd)) != 0) {
pr_debug(__FILE__ ": hcd_buffer_create failed\n");
retval = -ENOMEM;
goto err3;
}
hcd->state = USB_STATE_HALT;
retval = request_irq(irq, usb_hcd_irq, SA_SHIRQ,
hcd->description, hcd);
if (retval != 0) {
pr_debug(__FILE__ ": request_irq failed\n");
retval = -ENODEV;
goto err4;
}
hcd->irq = irq;
usb_bus_init(&hcd->self);
hcd->self.op = &usb_hcd_operations;
hcd->self.release = &usb_hcd_release;
hcd->self.hcpriv = (void *) hcd;
init_timer(&hcd->rh_timer);
INIT_LIST_HEAD(&hcd->dev_list);
usb_register_bus(&hcd->self);
if ((retval = driver->start(hcd)) < 0) {
dev_err(hcd->self.controller, "init error %d\n", retval);
usb_hcd_ppc_soc_remove(pdev);
}
return retval;
err4:
hcd_buffer_destroy(hcd);
err3:
iounmap(hcd->regs);
err2:
release_mem_region(res->start, res_len);
err1:
kfree(hcd);
return retval;
}
/**
* usb_hcd_omap_probe - initialize OMAP-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.
*/
int usb_hcd_omap_probe (const struct hc_driver *driver,
struct platform_device *pdev)
{
int retval;
struct usb_hcd *hcd = 0;
struct ohci_hcd *ohci;
if (pdev->num_resources != 2) {
printk(KERN_ERR "hcd probe: invalid num_resources: %i\n",
pdev->num_resources);
return -ENODEV;
}
if (pdev->resource[0].flags != IORESOURCE_MEM
|| pdev->resource[1].flags != IORESOURCE_IRQ) {
printk(KERN_ERR "hcd probe: invalid resource type\n");
return -ENODEV;
}
if (!request_mem_region(pdev->resource[0].start,
pdev->resource[0].end - pdev->resource[0].start + 1, hcd_name)) {
dev_dbg(&pdev->dev, "request_mem_region failed\n");
return -EBUSY;
}
hcd = driver->hcd_alloc ();
if (hcd == NULL){
dev_dbg(&pdev->dev, "hcd_alloc failed\n");
retval = -ENOMEM;
goto err1;
}
dev_set_drvdata(&pdev->dev, hcd);
ohci = hcd_to_ohci(hcd);
hcd->driver = (struct hc_driver *) driver;
hcd->description = driver->description;
hcd->irq = pdev->resource[1].start;
hcd->regs = (void *)pdev->resource[0].start;
hcd->self.controller = &pdev->dev;
retval = omap_start_hc(ohci, pdev);
if (retval < 0)
goto err1;
retval = hcd_buffer_create (hcd);
if (retval != 0) {
dev_dbg(&pdev->dev, "pool alloc fail\n");
goto err1;
}
retval = request_irq (hcd->irq, usb_hcd_irq,
#ifdef CONFIG_PREEMPT_HARDIRQS
0, hcd->description, hcd);
#else
SA_INTERRUPT, hcd->description, hcd);
#endif
if (retval != 0) {
dev_dbg(&pdev->dev, "request_irq failed\n");
retval = -EBUSY;
goto err2;
}
dev_info(&pdev->dev, "at 0x%p, irq %d\n", hcd->regs, hcd->irq);
usb_bus_init (&hcd->self);
hcd->self.op = &usb_hcd_operations;
hcd->self.release = &usb_hcd_release;
hcd->self.hcpriv = (void *) hcd;
hcd->self.bus_name = pdev->dev.bus_id;
hcd->product_desc = "OMAP OHCI";
INIT_LIST_HEAD (&hcd->dev_list);
usb_register_bus (&hcd->self);
if ((retval = driver->start (hcd)) < 0)
{
usb_hcd_omap_remove(hcd, pdev);
return retval;
}
return 0;
err2:
hcd_buffer_destroy (hcd);
err1:
kfree(hcd);
omap_stop_hc(pdev);
release_mem_region(pdev->resource[0].start,
pdev->resource[0].end - pdev->resource[0].start + 1);
dev_set_drvdata(&pdev->dev, 0);
return retval;
}
/**
* usb_hcd_omap_probe - initialize OMAP-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_omap_probe (const struct hc_driver *driver,
struct usb_hcd **hcd_out,
struct omap_dev *dev)
{
int retval;
struct usb_hcd *hcd = 0;
if (!request_mem_region(dev->res.start,
dev->res.end - dev->res.start + 1, hcd_name)) {
dbg("request_mem_region failed");
return -EBUSY;
}
omap_start_hc(dev);
hcd = driver->hcd_alloc ();
if (hcd == NULL){
dbg ("hcd_alloc failed");
retval = -ENOMEM;
goto err1;
}
hcd->driver = (struct hc_driver *) driver;
hcd->description = driver->description;
hcd->irq = dev->irq[0];
hcd->regs = dev->mapbase;
hcd->self.controller = &dev->dev;
retval = hcd_buffer_create (hcd);
if (retval != 0) {
dbg ("pool alloc fail");
goto err1;
}
retval = request_irq (hcd->irq,
usb_hcd_omap_hcim_irq,
SA_INTERRUPT, hcd->description, hcd);
if (retval != 0) {
dbg("request_irq failed");
retval = -EBUSY;
goto err2;
}
info ("%s (OMAP) at 0x%p, irq %d\n",
hcd->description, hcd->regs, hcd->irq);
usb_bus_init (&hcd->self);
hcd->self.op = &usb_hcd_operations;
hcd->self.hcpriv = (void *) hcd;
hcd->self.bus_name = "omap";
hcd->product_desc = "OMAP OHCI";
INIT_LIST_HEAD (&hcd->dev_list);
usb_register_bus (&hcd->self);
if ((retval = driver->start (hcd)) < 0)
{
usb_hcd_omap_remove(hcd, dev);
return retval;
}
*hcd_out = hcd;
return 0;
err2:
hcd_buffer_destroy (hcd);
if (hcd)
driver->hcd_free(hcd);
err1:
omap_stop_hc(dev);
release_mem_region(dev->res.start, dev->res.end - dev->res.start + 1);
return retval;
}
/**
* usb_hcd_ppc_soc_probe - initialize On-Chip HCDs
* Context: !in_interrupt()
*
* Allocates basic resources for this USB host controller.
*
* Store this function in the HCD's struct pci_driver as probe().
*/
static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver,
struct usb_hcd **hcd_out,
struct platform_device *pdev)
{
int retval;
struct usb_hcd *hcd = 0;
struct ohci_hcd *ohci;
struct resource *res;
int irq;
pr_debug("initializing PPC-SOC USB Controller\n");
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
pr_debug(__FILE__ ": no irq\n");
return -ENODEV;
}
irq = res->start;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
pr_debug(__FILE__ ": no reg addr\n");
return -ENODEV;
}
if (!request_mem_region(res->start, res->end - res->start + 1,
hcd_name)) {
pr_debug(__FILE__ ": request_mem_region failed\n");
return -EBUSY;
}
hcd = driver->hcd_alloc ();
if (!hcd){
pr_debug(__FILE__ ": hcd_alloc failed\n");
retval = -ENOMEM;
goto err1;
}
ohci = hcd_to_ohci(hcd);
ohci->flags |= OHCI_BIG_ENDIAN;
hcd->driver = (struct hc_driver *) driver;
hcd->description = driver->description;
hcd->irq = irq;
hcd->regs = (struct ohci_regs *) ioremap(res->start,
res->end - res->start + 1);
if (!hcd->regs) {
pr_debug(__FILE__ ": ioremap failed\n");
retval = -ENOMEM;
goto err2;
}
hcd->self.controller = &pdev->dev;
retval = hcd_buffer_create(hcd);
if (retval) {
pr_debug(__FILE__ ": pool alloc fail\n");
goto err3;
}
retval = request_irq(hcd->irq, usb_hcd_irq, SA_INTERRUPT,
hcd_name, hcd);
if (retval) {
pr_debug(__FILE__ ": request_irq failed, returned %d\n",
retval);
retval = -EBUSY;
goto err4;
}
info("%s (PPC-SOC) at 0x%p, irq %d\n",
hcd_name, hcd->regs, hcd->irq);
usb_bus_init(&hcd->self);
hcd->self.op = &usb_hcd_operations;
hcd->self.release = & usb_hcd_release;
hcd->self.hcpriv = (void *) hcd;
hcd->self.bus_name = "PPC-SOC USB";
hcd->product_desc = "PPC-SOC OHCI";
INIT_LIST_HEAD(&hcd->dev_list);
usb_register_bus(&hcd->self);
if ((retval = driver->start(hcd)) < 0) {
usb_hcd_ppc_soc_remove(hcd, pdev);
return retval;
}
*hcd_out = hcd;
return 0;
err4:
hcd_buffer_destroy(hcd);
err3:
iounmap(hcd->regs);
err2:
dev_set_drvdata(&pdev->dev, NULL);
err1:
pr_debug("Removing PPC-SOC USB Controller\n");
release_mem_region(res->start, res->end - res->start + 1);
return retval;
}
