diff options
| -rw-r--r-- | src/drivers/bus/pci.c | 1 | ||||
| -rw-r--r-- | src/include/ipxe/pci.h | 2 | ||||
| -rw-r--r-- | src/interface/efi/efi_pci.c | 10 |
3 files changed, 13 insertions, 0 deletions
diff --git a/src/drivers/bus/pci.c b/src/drivers/bus/pci.c index 7953aaedd..92b389641 100644 --- a/src/drivers/bus/pci.c +++ b/src/drivers/bus/pci.c @@ -205,6 +205,7 @@ int pci_read_config ( struct pci_device *pci ) { pci_read_config_dword ( pci, PCI_REVISION, &tmp ); pci->class = ( tmp >> 8 ); pci_read_config_byte ( pci, PCI_INTERRUPT_LINE, &pci->irq ); + pci_read_config_byte ( pci, PCI_HEADER_TYPE, &pci->hdrtype ); pci_read_bases ( pci ); /* Initialise generic device component */ diff --git a/src/include/ipxe/pci.h b/src/include/ipxe/pci.h index 637b20d60..8c6d9e4e2 100644 --- a/src/include/ipxe/pci.h +++ b/src/include/ipxe/pci.h @@ -227,6 +227,8 @@ struct pci_device { uint32_t class; /** Interrupt number */ uint8_t irq; + /** Header type */ + uint8_t hdrtype; /** Segment, bus, device, and function (bus:dev.fn) number */ uint32_t busdevfn; /** Driver for this device */ diff --git a/src/interface/efi/efi_pci.c b/src/interface/efi/efi_pci.c index 4796201e9..e2eeeb344 100644 --- a/src/interface/efi/efi_pci.c +++ b/src/interface/efi/efi_pci.c @@ -785,12 +785,22 @@ int efipci_info ( EFI_HANDLE device, struct efi_pci_device *efipci ) { */ static int efipci_supported ( EFI_HANDLE device ) { struct efi_pci_device efipci; + uint8_t hdrtype; int rc; /* Get PCI device information */ if ( ( rc = efipci_info ( device, &efipci ) ) != 0 ) return rc; + /* Do not attempt to drive bridges */ + hdrtype = efipci.pci.hdrtype; + if ( ( hdrtype & PCI_HEADER_TYPE_MASK ) != PCI_HEADER_TYPE_NORMAL ) { + DBGC ( device, "EFIPCI " PCI_FMT " type %02x is not type %02x\n", + PCI_ARGS ( &efipci.pci ), hdrtype, + PCI_HEADER_TYPE_NORMAL ); + return -ENOTTY; + } + /* Look for a driver */ if ( ( rc = pci_find_driver ( &efipci.pci ) ) != 0 ) { DBGC ( device, "EFIPCI " PCI_FMT " (%04x:%04x class %06x) " |