diff options
Diffstat (limited to 'src/interface')
| -rw-r--r-- | src/interface/efi/efi_pci.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/src/interface/efi/efi_pci.c b/src/interface/efi/efi_pci.c index fa71e7d84..0a2da2e41 100644 --- a/src/interface/efi/efi_pci.c +++ b/src/interface/efi/efi_pci.c @@ -216,17 +216,19 @@ struct efi_pci_device * efipci_create ( struct efi_driver *efidrv, */ EFI_STATUS efipci_enable ( struct efi_pci_device *efipci ) { EFI_PCI_IO_PROTOCOL *pci_io = efipci->pci_io; - EFI_STATUS efirc; - /* Enable device */ - if ( ( efirc = pci_io->Attributes ( pci_io, - EfiPciIoAttributeOperationSet, - EFI_PCI_DEVICE_ENABLE, - NULL ) ) != 0 ) { - DBGC ( efipci, "EFIPCI " PCI_FMT " could not be enabled: %s\n", - PCI_ARGS ( &efipci->pci ), efi_strerror ( efirc ) ); - return efirc; - } + /* Try to enable I/O cycles, memory cycles, and bus mastering. + * Some platforms will 'helpfully' report errors if these bits + * can't be enabled (for example, if the card doesn't actually + * support I/O cycles). Work around any such platforms by + * enabling bits individually and simply ignoring any errors. + */ + pci_io->Attributes ( pci_io, EfiPciIoAttributeOperationEnable, + EFI_PCI_IO_ATTRIBUTE_IO, NULL ); + pci_io->Attributes ( pci_io, EfiPciIoAttributeOperationEnable, + EFI_PCI_IO_ATTRIBUTE_MEMORY, NULL ); + pci_io->Attributes ( pci_io, EfiPciIoAttributeOperationEnable, + EFI_PCI_IO_ATTRIBUTE_BUS_MASTER, NULL ); return 0; } |