EdkModulePkg/Universal/Network/Snp32_64/Dxe/reset.c

   1 /*++
   2 Copyright (c) 2006, Intel Corporation
   3 All rights reserved. This program and the accompanying materials
   4 are licensed and made available under the terms and conditions of the BSD License
   5 which accompanies this distribution.  The full text of the license may be found at
   6 http://opensource.org/licenses/bsd-license.php
   7
   8 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   9 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  10
  11 Module name:
  12   reset.c
  13
  14 Abstract:
  15
  16 Revision history:
  17   2000-Feb-09 M(f)J   Genesis.
  18 --*/
  19
  20
  21 #include "Snp.h"
  22
  23 STATIC
  24 EFI_STATUS
  25 pxe_reset (
  26   SNP_DRIVER *snp
  27   )
  28 /*++
  29
  30 Routine Description:
  31  This routine calls undi to reset the nic.
  32
  33 Arguments:
  34  snp - pointer to the snp driver structure
  35
  36 Returns:
  37  EFI_SUCCESSFUL for a successful completion
  38  other for failed calls
  39
  40 --*/
  41 {
  42   snp->cdb.OpCode     = PXE_OPCODE_RESET;
  43   snp->cdb.OpFlags    = PXE_OPFLAGS_NOT_USED;
  44   snp->cdb.CPBsize    = PXE_CPBSIZE_NOT_USED;
  45   snp->cdb.DBsize     = PXE_DBSIZE_NOT_USED;
  46   snp->cdb.CPBaddr    = PXE_CPBADDR_NOT_USED;
  47   snp->cdb.DBaddr     = PXE_DBADDR_NOT_USED;
  48   snp->cdb.StatCode   = PXE_STATCODE_INITIALIZE;
  49   snp->cdb.StatFlags  = PXE_STATFLAGS_INITIALIZE;
  50   snp->cdb.IFnum      = snp->if_num;
  51   snp->cdb.Control    = PXE_CONTROL_LAST_CDB_IN_LIST;
  52
  53   //
  54   // Issue UNDI command and check result.
  55   //
  56   DEBUG ((EFI_D_NET, "\nsnp->undi.reset()  "));
  57
  58   (*snp->issue_undi32_command) ((UINT64) (UINTN) &snp->cdb);
  59
  60   if (snp->cdb.StatCode != PXE_STATCODE_SUCCESS) {
  61     DEBUG (
  62       (EFI_D_WARN,
  63       "\nsnp->undi32.reset()  %xh:%xh\n",
  64       snp->cdb.StatFlags,
  65       snp->cdb.StatCode)
  66       );
  67
  68     //
  69     // UNDI could not be reset. Return UNDI error.
  70     //
  71     return EFI_DEVICE_ERROR;
  72   }
  73
  74   return EFI_SUCCESS;
  75 }
  76
  77 EFI_STATUS
  78 EFIAPI
  79 snp_undi32_reset (
  80   IN EFI_SIMPLE_NETWORK_PROTOCOL *this,
  81   IN BOOLEAN                     ExtendedVerification
  82   )
  83 /*++
  84
  85 Routine Description:
  86  This is the SNP interface routine for resetting the NIC
  87  This routine basically retrieves snp structure, checks the SNP state and
  88  calls the pxe_reset routine to actually do the reset!
  89
  90 Arguments:
  91  this - context pointer
  92  ExtendedVerification - not implemented
  93
  94 Returns:
  95
  96 --*/
  97 {
  98   SNP_DRIVER  *snp;
  99
 100   if (this == NULL) {
 101     return EFI_INVALID_PARAMETER;
 102   }
 103
 104   snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);
 105
 106   if (snp == NULL) {
 107     return EFI_DEVICE_ERROR;
 108   }
 109
 110   switch (snp->mode.State) {
 111   case EfiSimpleNetworkInitialized:
 112     break;
 113
 114   case EfiSimpleNetworkStopped:
 115     return EFI_NOT_STARTED;
 116
 117   case EfiSimpleNetworkStarted:
 118     return EFI_DEVICE_ERROR;
 119
 120   default:
 121     return EFI_DEVICE_ERROR;
 122   }
 123
 124   return pxe_reset (snp);
 125 }