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