| /* |
| * Copyright (C) 2014 Michael Brown <mbrown@fensystems.co.uk>. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of the |
| * License, or any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| * 02110-1301, USA. |
| * |
| * You can also choose to distribute this program under the terms of |
| * the Unmodified Binary Distribution Licence (as given in the file |
| * COPYING.UBDL), provided that you have satisfied its requirements. |
| */ |
| |
| FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); |
| |
| #include <errno.h> |
| #include <ipxe/efi/efi.h> |
| #include <ipxe/efi/efi_driver.h> |
| #include <ipxe/efi/efi_snp.h> |
| #include <ipxe/efi/efi_utils.h> |
| #include "snpnet.h" |
| #include "nii.h" |
| |
| /** @file |
| * |
| * SNP driver |
| * |
| */ |
| |
| /** |
| * Check to see if driver supports a device |
| * |
| * @v device EFI device handle |
| * @v protocol Protocol GUID |
| * @ret rc Return status code |
| */ |
| static int snp_nii_supported ( EFI_HANDLE device, EFI_GUID *protocol ) { |
| EFI_BOOT_SERVICES *bs = efi_systab->BootServices; |
| EFI_HANDLE parent; |
| EFI_STATUS efirc; |
| int rc; |
| |
| /* Check that this is not a device we are providing ourselves */ |
| if ( find_snpdev ( device ) != NULL ) { |
| DBGCP ( device, "HANDLE %s is provided by this binary\n", |
| efi_handle_name ( device ) ); |
| return -ENOTTY; |
| } |
| |
| /* Test for presence of protocol */ |
| if ( ( efirc = bs->OpenProtocol ( device, protocol, |
| NULL, efi_image_handle, device, |
| EFI_OPEN_PROTOCOL_TEST_PROTOCOL))!=0){ |
| DBGCP ( device, "HANDLE %s is not a %s device\n", |
| efi_handle_name ( device ), |
| efi_guid_ntoa ( protocol ) ); |
| return -EEFI ( efirc ); |
| } |
| |
| /* Check that there are no instances of this protocol further |
| * up this device path. |
| */ |
| if ( ( rc = efi_locate_device ( device, protocol, |
| &parent, 1 ) ) == 0 ) { |
| DBGC2 ( device, "HANDLE %s has %s-supporting parent ", |
| efi_handle_name ( device ), |
| efi_guid_ntoa ( protocol ) ); |
| DBGC2 ( device, "%s\n", efi_handle_name ( parent ) ); |
| return -ENOTTY; |
| } |
| |
| DBGC ( device, "HANDLE %s is a %s device\n", |
| efi_handle_name ( device ), efi_guid_ntoa ( protocol ) ); |
| return 0; |
| } |
| |
| /** |
| * Check to see if driver supports a device |
| * |
| * @v device EFI device handle |
| * @ret rc Return status code |
| */ |
| static int snp_supported ( EFI_HANDLE device ) { |
| |
| return snp_nii_supported ( device, &efi_simple_network_protocol_guid ); |
| } |
| |
| /** |
| * Check to see if driver supports a device |
| * |
| * @v device EFI device handle |
| * @ret rc Return status code |
| */ |
| static int nii_supported ( EFI_HANDLE device ) { |
| |
| return snp_nii_supported ( device, &efi_nii31_protocol_guid ); |
| } |
| |
| /** EFI SNP driver */ |
| struct efi_driver snp_driver __efi_driver ( EFI_DRIVER_NORMAL ) = { |
| .name = "SNP", |
| .supported = snp_supported, |
| .start = snpnet_start, |
| .stop = snpnet_stop, |
| }; |
| |
| /** EFI NII driver */ |
| struct efi_driver nii_driver __efi_driver ( EFI_DRIVER_NORMAL ) = { |
| .name = "NII", |
| .supported = nii_supported, |
| .start = nii_start, |
| .stop = nii_stop, |
| }; |