IPXE/ipxe_mod_code/ipxe-3fe683e/src/drivers/net/efi/snp.c

   1 /*
   2  * Copyright (C) 2014 Michael Brown <mbrown@fensystems.co.uk>.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17  * 02110-1301, USA.
  18  *
  19  * You can also choose to distribute this program under the terms of
  20  * the Unmodified Binary Distribution Licence (as given in the file
  21  * COPYING.UBDL), provided that you have satisfied its requirements.
  22  */
  23
  24 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
  25
  26 #if 0
  27
  28 #include <errno.h>
  29 #include <ipxe/efi/efi.h>
  30 #include <ipxe/efi/efi_driver.h>
  31 #include <ipxe/efi/efi_snp.h>
  32 #include "snpnet.h"
  33 #include "nii.h"
  34
  35 /** @file
  36  *
  37  * SNP driver
  38  *
  39  */
  40
  41 /**
  42  * Check to see if driver supports a device
  43  *
  44  * @v device            EFI device handle
  45  * @ret rc              Return status code
  46  */
  47 static int snp_supported ( EFI_HANDLE device ) {
  48         EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
  49         EFI_STATUS efirc;
  50
  51         /* Check that this is not a device we are providing ourselves */
  52         if ( find_snpdev ( device ) != NULL ) {
  53                 DBGCP ( device, "SNP %s is provided by this binary\n",
  54                         efi_handle_name ( device ) );
  55                 return -ENOTTY;
  56         }
  57
  58         /* Test for presence of simple network protocol */
  59         if ( ( efirc = bs->OpenProtocol ( device,
  60                                           &efi_simple_network_protocol_guid,
  61                                           NULL, efi_image_handle, device,
  62                                           EFI_OPEN_PROTOCOL_TEST_PROTOCOL))!=0){
  63                 DBGCP ( device, "SNP %s is not an SNP device\n",
  64                         efi_handle_name ( device ) );
  65                 return -EEFI ( efirc );
  66         }
  67         DBGC ( device, "SNP %s is an SNP device\n",
  68                efi_handle_name ( device ) );
  69
  70         return 0;
  71 }
  72
  73 /**
  74  * Check to see if driver supports a device
  75  *
  76  * @v device            EFI device handle
  77  * @ret rc              Return status code
  78  */
  79 static int nii_supported ( EFI_HANDLE device ) {
  80         EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
  81         EFI_STATUS efirc;
  82
  83         /* Check that this is not a device we are providing ourselves */
  84         if ( find_snpdev ( device ) != NULL ) {
  85                 DBGCP ( device, "NII %s is provided by this binary\n",
  86                         efi_handle_name ( device ) );
  87                 return -ENOTTY;
  88         }
  89
  90         /* Test for presence of NII protocol */
  91         if ( ( efirc = bs->OpenProtocol ( device,
  92                                           &efi_nii31_protocol_guid,
  93                                           NULL, efi_image_handle, device,
  94                                           EFI_OPEN_PROTOCOL_TEST_PROTOCOL))!=0){
  95                 DBGCP ( device, "NII %s is not an NII device\n",
  96                         efi_handle_name ( device ) );
  97                 return -EEFI ( efirc );
  98         }
  99         DBGC ( device, "NII %s is an NII device\n",
 100                efi_handle_name ( device ) );
 101
 102         return 0;
 103 }
 104
 105 /** EFI SNP driver */
 106 struct efi_driver snp_driver __efi_driver ( EFI_DRIVER_NORMAL ) = {
 107         .name = "SNP",
 108         .supported = snp_supported,
 109         .start = snpnet_start,
 110         .stop = snpnet_stop,
 111 };
 112
 113 /** EFI NII driver */
 114 struct efi_driver nii_driver __efi_driver ( EFI_DRIVER_NORMAL ) = {
 115         .name = "NII",
 116         .supported = nii_supported,
 117         .start = nii_start,
 118         .stop = nii_stop,
 119 };
 120
 121 #endif
 122