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usb: Add multiple controllers support for EHCI PCI

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Use the ability to have several active EHCI controller on a system
in the PCI EHCI controller implementation.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Vincent Palatin 2013-03-12 03:45:31 +00:00 • committed by Marek Vasut
parent 0641ce5b5a
commit ae003d0570
1 changed files with 16 additions and 9 deletions
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25
drivers/usb/host/ehci-pci.c
View file

@ -34,7 +34,7 @@ static struct pci_device_id ehci_pci_ids[] = {
{0, 0} {0, 0}
}; };
#else #else
static pci_dev_t ehci_find_class(void) static pci_dev_t ehci_find_class(int index)
{ {
int bus; int bus;
int devnum; int devnum;
@ -54,7 +54,8 @@ static pci_dev_t ehci_find_class(void)
bdf += PCI_BDF(0, 0, 1)) { bdf += PCI_BDF(0, 0, 1)) {
pci_read_config_dword(bdf, PCI_CLASS_REVISION, pci_read_config_dword(bdf, PCI_CLASS_REVISION,
&class); &class);
if (class >> 8 == PCI_CLASS_SERIAL_USB_EHCI) if ((class >> 8 == PCI_CLASS_SERIAL_USB_EHCI)
&& !index--)
return bdf; return bdf;
} }
} }
@ -68,29 +69,35 @@ static pci_dev_t ehci_find_class(void)
* Create the appropriate control structures to manage * Create the appropriate control structures to manage
* a new EHCI host controller. * a new EHCI host controller.
*/ */
int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor) int ehci_hcd_init(int index, struct ehci_hccr **ret_hccr,
struct ehci_hcor **ret_hcor)
{ {
pci_dev_t pdev; pci_dev_t pdev;
uint32_t cmd; uint32_t cmd;
struct ehci_hccr *hccr;
struct ehci_hcor *hcor;
#ifdef CONFIG_PCI_EHCI_DEVICE #ifdef CONFIG_PCI_EHCI_DEVICE
pdev = pci_find_devices(ehci_pci_ids, CONFIG_PCI_EHCI_DEVICE); pdev = pci_find_devices(ehci_pci_ids, CONFIG_PCI_EHCI_DEVICE);
#else #else
pdev = ehci_find_class(); pdev = ehci_find_class(index);
#endif #endif
if (pdev < 0) { if (pdev < 0) {
printf("EHCI host controller not found\n"); printf("EHCI host controller not found\n");
return -1; return -1;
} }
*hccr = (struct ehci_hccr *)pci_map_bar(pdev, hccr = (struct ehci_hccr *)pci_map_bar(pdev,
PCI_BASE_ADDRESS_0, PCI_REGION_MEM); PCI_BASE_ADDRESS_0, PCI_REGION_MEM);
*hcor = (struct ehci_hcor *)((uint32_t) *hccr + hcor = (struct ehci_hcor *)((uint32_t) hccr +
HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
debug("EHCI-PCI init hccr 0x%x and hcor 0x%x hc_length %d\n", debug("EHCI-PCI init hccr 0x%x and hcor 0x%x hc_length %d\n",
(uint32_t)*hccr, (uint32_t)*hcor, (uint32_t)hccr, (uint32_t)hcor,
(uint32_t)HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); (uint32_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
*ret_hccr = hccr;
*ret_hcor = hcor;
/* enable busmaster */ /* enable busmaster */
pci_read_config_dword(pdev, PCI_COMMAND, &cmd); pci_read_config_dword(pdev, PCI_COMMAND, &cmd);