diff options
Diffstat (limited to 'src/interface/efi/efi_pci.c')
| -rw-r--r-- | src/interface/efi/efi_pci.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/interface/efi/efi_pci.c b/src/interface/efi/efi_pci.c index d866e30e7..3b393fcbe 100644 --- a/src/interface/efi/efi_pci.c +++ b/src/interface/efi/efi_pci.c @@ -139,6 +139,7 @@ struct efi_pci_device * efipci_create ( struct efi_driver *efidrv, if ( ! efipci ) goto err_zalloc; efipci->device = device; + efipci->efidrv = efidrv; /* See if device is a PCI device */ if ( ( efirc = bs->OpenProtocol ( device, @@ -263,6 +264,54 @@ struct efi_pci_device * efipci_find ( struct device *dev ) { } /** + * Add EFI device as child of EFI PCI device + * + * @v efipci EFI PCI device + * @v device EFI child device + * @ret efirc EFI status code + */ +EFI_STATUS efipci_child_add ( struct efi_pci_device *efipci, + EFI_HANDLE device ) { + EFI_BOOT_SERVICES *bs = efi_systab->BootServices; + struct efi_driver *efidrv = efipci->efidrv; + union { + EFI_PCI_IO_PROTOCOL *pci_io; + void *interface; + } pci_io; + EFI_STATUS efirc; + + /* Re-open the PCI_IO_PROTOCOL */ + if ( ( efirc = bs->OpenProtocol ( efipci->device, + &efi_pci_io_protocol_guid, + &pci_io.interface, + efidrv->driver.DriverBindingHandle, + device, + EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER + ) ) != 0 ) { + DBGC ( efipci, "EFIPCI " PCI_FMT " could not add child: %s\n", + PCI_ARGS ( &efipci->pci ), efi_strerror ( efirc ) ); + return efirc; + } + + return 0; +} + +/** + * Remove EFI device as child of PCI device + * + * @v efipci EFI PCI device + * @v device EFI child device + * @ret efirc EFI status code + */ +void efipci_child_del ( struct efi_pci_device *efipci, EFI_HANDLE device ) { + EFI_BOOT_SERVICES *bs = efi_systab->BootServices; + struct efi_driver *efidrv = efipci->efidrv; + + bs->CloseProtocol ( efipci->device, &efi_pci_io_protocol_guid, + efidrv->driver.DriverBindingHandle, device ); +} + +/** * Destroy EFI PCI device * * @v efidrv EFI driver |