Ejemplo n.º 1
0
Archivo: snpnet.c Proyecto: grze/ipxe
/**
 * 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;
}
Ejemplo n.º 2
0
Archivo: nii.c Proyecto: baloo/ipxe
/**
 * Open PCI I/O protocol and identify BARs
 *
 * @v nii		NII NIC
 * @ret rc		Return status code
 */
static int nii_pci_open ( struct nii_nic *nii ) {
	EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
	EFI_HANDLE device = nii->efidev->device;
	EFI_HANDLE pci_device;
	union {
		EFI_PCI_IO_PROTOCOL *pci_io;
		void *interface;
	} pci_io;
	union {
		EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *acpi;
		void *resource;
	} desc;
	unsigned int bar;
	EFI_STATUS efirc;
	int rc;

	/* Locate PCI I/O protocol */
	if ( ( rc = efi_locate_device ( device, &efi_pci_io_protocol_guid,
					&pci_device ) ) != 0 ) {
		DBGC ( nii, "NII %s could not locate PCI I/O protocol: %s\n",
		       nii->dev.name, strerror ( rc ) );
		goto err_locate;
	}
	nii->pci_device = pci_device;

	/* Open PCI I/O protocol */
	if ( ( efirc = bs->OpenProtocol ( pci_device, &efi_pci_io_protocol_guid,
					  &pci_io.interface, efi_image_handle,
					  device,
					  EFI_OPEN_PROTOCOL_GET_PROTOCOL ))!=0){
		rc = -EEFI ( efirc );
		DBGC ( nii, "NII %s could not open PCI I/O protocol: %s\n",
		       nii->dev.name, strerror ( rc ) );
		goto err_open;
	}
	nii->pci_io = pci_io.pci_io;

	/* Identify memory and I/O BARs */
	nii->mem_bar = PCI_MAX_BAR;
	nii->io_bar = PCI_MAX_BAR;
	for ( bar = 0 ; bar < PCI_MAX_BAR ; bar++ ) {
		efirc = nii->pci_io->GetBarAttributes ( nii->pci_io, bar, NULL,
							&desc.resource );
		if ( efirc == EFI_UNSUPPORTED ) {
			/* BAR not present; ignore */
			continue;
		}
		if ( efirc != 0 ) {
			rc = -EEFI ( efirc );
			DBGC ( nii, "NII %s could not get BAR %d attributes: "
			       "%s\n", nii->dev.name, bar, strerror ( rc ) );
			goto err_get_bar_attributes;
		}
		if ( desc.acpi->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM ) {
			nii->mem_bar = bar;
		} else if ( desc.acpi->ResType == ACPI_ADDRESS_SPACE_TYPE_IO ) {
			nii->io_bar = bar;
		}
		bs->FreePool ( desc.resource );
	}
	DBGC ( nii, "NII %s has ", nii->dev.name );
	if ( nii->mem_bar < PCI_MAX_BAR ) {
		DBGC ( nii, "memory BAR %d and ", nii->mem_bar );
	} else {
		DBGC ( nii, "no memory BAR and " );
	}
	if ( nii->io_bar < PCI_MAX_BAR ) {
		DBGC ( nii, "I/O BAR %d\n", nii->io_bar );
	} else {
		DBGC ( nii, "no I/O BAR\n" );
	}

	return 0;

 err_get_bar_attributes:
	bs->CloseProtocol ( pci_device, &efi_pci_io_protocol_guid,
			    efi_image_handle, device );
 err_open:
 err_locate:
	return rc;
}