diff options
Diffstat (limited to 'src/southbridge/intel/common/usb_debug.c')
| -rw-r--r-- | src/southbridge/intel/common/usb_debug.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/src/southbridge/intel/common/usb_debug.c b/src/southbridge/intel/common/usb_debug.c index 3fed2ab854..9fe22cd176 100644 --- a/src/southbridge/intel/common/usb_debug.c +++ b/src/southbridge/intel/common/usb_debug.c @@ -28,7 +28,32 @@ pci_devfn_t pci_ehci_dbg_dev(unsigned int hcd_idx) { - return PCI_DEV(0, 0x1d, 7); + u32 class; + pci_devfn_t dev; + +#if CONFIG_HAVE_USBDEBUG_OPTIONS + if (hcd_idx==2) + dev = PCI_DEV(0, 0x1a, 0); + else + dev = PCI_DEV(0, 0x1d, 0); +#else + dev = PCI_DEV(0, 0x1d, 7); +#endif + + class = pci_read_config32(dev, PCI_CLASS_REVISION) >> 8; +#if CONFIG_HAVE_USBDEBUG_OPTIONS + if (class != PCI_EHCI_CLASSCODE) { + /* If we enter here before RCBA programming, EHCI function may + * appear with the highest function number instead. + */ + dev |= PCI_DEV(0, 0, 7); + class = pci_read_config32(dev, PCI_CLASS_REVISION) >> 8; + } +#endif + if (class != PCI_EHCI_CLASSCODE) + return 0; + + return dev; } /* Required for successful build, but currently empty. */ @@ -41,6 +66,10 @@ void pci_ehci_dbg_enable(pci_devfn_t dev, unsigned long base) { u32 dbgctl; + /* Bail out. No console to complain in. */ + if (!dev) + return; + /* Set the EHCI BAR address. */ pci_write_config32(dev, EHCI_BAR_INDEX, base); |