/**
* Get underlying PCI device information
*
* @v efidev EFI device
* @v dev Generic device to fill in
* @ret rc Return status code
*/
static int snpnet_pci_info ( struct efi_device *efidev, struct device *dev ) {
EFI_HANDLE device = efidev->device;
EFI_HANDLE pci_device;
struct pci_device pci;
int rc;
/* Find parent PCI device */
if ( ( rc = efi_locate_device ( device, &efi_pci_io_protocol_guid,
&pci_device ) ) != 0 ) {
DBGC ( device, "SNP %p %s is not a PCI device: %s\n",
device, efi_handle_name ( device ), strerror ( rc ) );
return rc;
}
/* Get PCI device information */
if ( ( rc = efipci_info ( pci_device, &pci ) ) != 0 ) {
DBGC ( device, "SNP %p %s could not get PCI information: %s\n",
device, efi_handle_name ( device ), strerror ( rc ) );
return rc;
}
/* Populate SNP device information */
memcpy ( &dev->desc, &pci.dev.desc, sizeof ( dev->desc ) );
snprintf ( dev->name, sizeof ( dev->name ), "SNP-%s", pci.dev.name );
return 0;
}
/**
* Check to see if driver supports a device
*
* @v device EFI device handle
* @ret rc Return status code
*/
static int efipci_supported ( EFI_HANDLE device ) {
struct pci_device pci;
int rc;
/* Get PCI device information */
if ( ( rc = efipci_info ( device, &pci ) ) != 0 )
return rc;
/* Look for a driver */
if ( ( rc = pci_find_driver ( &pci ) ) != 0 ) {
DBGC ( device, "EFIPCI " PCI_FMT " (%04x:%04x class %06x) "
"has no driver\n", PCI_ARGS ( &pci ), pci.vendor,
pci.device, pci.class );
return rc;
}
/**
* Check to see if driver supports a device
*
* @v device EFI device handle
* @ret rc Return status code
*/
static int efipci_supported ( EFI_HANDLE device ) {
struct pci_device pci;
int rc;
/* Get PCI device information */
if ( ( rc = efipci_info ( device, &pci ) ) != 0 )
return rc;
/* Look for a driver */
if ( ( rc = pci_find_driver ( &pci ) ) != 0 ) {
DBGCP ( device, "EFIPCI %s has no driver\n",
efi_handle_name ( device ) );
return rc;
}
DBGC ( device, "EFIPCI %s has driver \"%s\"\n",
efi_handle_name ( device ), pci.id->name );
return 0;
}