MdeModulePkg/Universal/Network/SnpDxe/Reset.c

   1 /** @file
   2 Copyright (c) 2004 - 2007, 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
  24 /**
  25   This routine calls undi to reset the nic.
  26
  27   @param  snp                   pointer to the snp driver structure
  28
  29   @return EFI_SUCCESSFUL for a successful completion
  30   @return other for failed calls
  31
  32 **/
  33 STATIC
  34 EFI_STATUS
  35 pxe_reset (
  36   SNP_DRIVER *snp
  37   )
  38 {
  39   snp->cdb.OpCode     = PXE_OPCODE_RESET;
  40   snp->cdb.OpFlags    = PXE_OPFLAGS_NOT_USED;
  41   snp->cdb.CPBsize    = PXE_CPBSIZE_NOT_USED;
  42   snp->cdb.DBsize     = PXE_DBSIZE_NOT_USED;
  43   snp->cdb.CPBaddr    = PXE_CPBADDR_NOT_USED;
  44   snp->cdb.DBaddr     = PXE_DBADDR_NOT_USED;
  45   snp->cdb.StatCode   = PXE_STATCODE_INITIALIZE;
  46   snp->cdb.StatFlags  = PXE_STATFLAGS_INITIALIZE;
  47   snp->cdb.IFnum      = snp->if_num;
  48   snp->cdb.Control    = PXE_CONTROL_LAST_CDB_IN_LIST;
  49
  50   //
  51   // Issue UNDI command and check result.
  52   //
  53   DEBUG ((EFI_D_NET, "\nsnp->undi.reset()  "));
  54
  55   (*snp->issue_undi32_command) ((UINT64)(UINTN) &snp->cdb);
  56
  57   if (snp->cdb.StatCode != PXE_STATCODE_SUCCESS) {
  58     DEBUG (
  59       (EFI_D_WARN,
  60       "\nsnp->undi32.reset()  %xh:%xh\n",
  61       snp->cdb.StatFlags,
  62       snp->cdb.StatCode)
  63       );
  64
  65     //
  66     // UNDI could not be reset. Return UNDI error.
  67     //
  68     return EFI_DEVICE_ERROR;
  69   }
  70
  71   return EFI_SUCCESS;
  72 }
  73
  74
  75 /**
  76   This is the SNP interface routine for resetting the NIC
  77   This routine basically retrieves snp structure, checks the SNP state and
  78   calls the pxe_reset routine to actually do the reset!
  79
  80   @param  this                  context pointer
  81   @param  ExtendedVerification  not implemented
  82
  83
  84 **/
  85 EFI_STATUS
  86 EFIAPI
  87 snp_undi32_reset (
  88   IN EFI_SIMPLE_NETWORK_PROTOCOL *this,
  89   IN BOOLEAN                     ExtendedVerification
  90   )
  91 {
  92   SNP_DRIVER  *snp;
  93   EFI_TPL     OldTpl;
  94   EFI_STATUS  Status;
  95
  96   //
  97   // Resolve Warning 4 unreferenced parameter problem
  98   //
  99   ExtendedVerification = 0;
 100   DEBUG ((EFI_D_WARN, "ExtendedVerification = %d is not implemented!\n", ExtendedVerification));
 101
 102   if (this == NULL) {
 103     return EFI_INVALID_PARAMETER;
 104   }
 105
 106   snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);
 107
 108   OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
 109
 110   switch (snp->mode.State) {
 111   case EfiSimpleNetworkInitialized:
 112     break;
 113
 114   case EfiSimpleNetworkStopped:
 115     Status = EFI_NOT_STARTED;
 116     goto ON_EXIT;
 117
 118   default:
 119     Status = EFI_DEVICE_ERROR;
 120     goto ON_EXIT;
 121   }
 122
 123   Status = pxe_reset (snp);
 124
 125 ON_EXIT:
 126   gBS->RestoreTPL (OldTpl);
 127
 128   return Status;
 129 }