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 EFI_STATUS
  24 pxe_reset (
  25   SNP_DRIVER *snp
  26   )
  27 /*++
  28
  29 Routine Description:
  30  This routine calls undi to reset the nic.
  31
  32 Arguments:
  33  snp - pointer to the snp driver structure
  34
  35 Returns:
  36  EFI_SUCCESSFUL for a successful completion
  37  other for failed calls
  38
  39 --*/
  40 {
  41   snp->cdb.OpCode     = PXE_OPCODE_RESET;
  42   snp->cdb.OpFlags    = PXE_OPFLAGS_NOT_USED;
  43   snp->cdb.CPBsize    = PXE_CPBSIZE_NOT_USED;
  44   snp->cdb.DBsize     = PXE_DBSIZE_NOT_USED;
  45   snp->cdb.CPBaddr    = PXE_CPBADDR_NOT_USED;
  46   snp->cdb.DBaddr     = PXE_DBADDR_NOT_USED;
  47   snp->cdb.StatCode   = PXE_STATCODE_INITIALIZE;
  48   snp->cdb.StatFlags  = PXE_STATFLAGS_INITIALIZE;
  49   snp->cdb.IFnum      = snp->if_num;
  50   snp->cdb.Control    = PXE_CONTROL_LAST_CDB_IN_LIST;
  51
  52   //
  53   // Issue UNDI command and check result.
  54   //
  55   DEBUG ((EFI_D_NET, "\nsnp->undi.reset()  "));
  56
  57   (*snp->issue_undi32_command) ((UINT64) (UINTN) &snp->cdb);
  58
  59   if (snp->cdb.StatCode != PXE_STATCODE_SUCCESS) {
  60     DEBUG (
  61       (EFI_D_WARN,
  62       "\nsnp->undi32.reset()  %xh:%xh\n",
  63       snp->cdb.StatFlags,
  64       snp->cdb.StatCode)
  65       );
  66
  67     //
  68     // UNDI could not be reset. Return UNDI error.
  69     //
  70     return EFI_DEVICE_ERROR;
  71   }
  72
  73   return EFI_SUCCESS;
  74 }
  75
  76 EFI_STATUS
  77 EFIAPI
  78 snp_undi32_reset (
  79   IN EFI_SIMPLE_NETWORK_PROTOCOL *this,
  80   IN BOOLEAN                     ExtendedVerification
  81   )
  82 /*++
  83
  84 Routine Description:
  85  This is the SNP interface routine for resetting the NIC
  86  This routine basically retrieves snp structure, checks the SNP state and
  87  calls the pxe_reset routine to actually do the reset!
  88
  89 Arguments:
  90  this - context pointer
  91  ExtendedVerification - not implemented
  92
  93 Returns:
  94
  95 --*/
  96 {
  97   SNP_DRIVER  *snp;
  98
  99   //
 100   // Resolve Warning 4 unreferenced parameter problem
 101   //
 102   ExtendedVerification = 0;
 103
 104   if (this == NULL) {
 105     return EFI_INVALID_PARAMETER;
 106   }
 107
 108   snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);
 109
 110   if (snp == NULL) {
 111     return EFI_DEVICE_ERROR;
 112   }
 113
 114   switch (snp->mode.State) {
 115   case EfiSimpleNetworkInitialized:
 116     break;
 117
 118   case EfiSimpleNetworkStopped:
 119     return EFI_NOT_STARTED;
 120
 121   case EfiSimpleNetworkStarted:
 122     return EFI_DEVICE_ERROR;
 123
 124   default:
 125     return EFI_DEVICE_ERROR;
 126   }
 127
 128   return pxe_reset (snp);
 129 }