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 PxeReset (
  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->IfNum;
  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->IssueUndi32Command) ((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   Resets a network adapter and reinitializes it with the parameters that were
  76   provided in the previous call to Initialize().
  77
  78   This function resets a network adapter and reinitializes it with the parameters
  79   that were provided in the previous call to Initialize(). The transmit and
  80   receive queues are emptied and all pending interrupts are cleared.
  81   Receive filters, the station address, the statistics, and the multicast-IP-to-HW
  82   MAC addresses are not reset by this call. If the network interface was
  83   successfully reset, then EFI_SUCCESS will be returned. If the driver has not
  84   been initialized, EFI_DEVICE_ERROR will be returned.
  85
  86   @param This                 A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
  87   @param ExtendedVerification Indicates that the driver may perform a more
  88                               exhaustive verification operation of the device
  89                               during reset.
  90
  91   @retval EFI_SUCCESS           The network interface was reset.
  92   @retval EFI_NOT_STARTED       The network interface has not been started.
  93   @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
  94   @retval EFI_DEVICE_ERROR      The command could not be sent to the network interface.
  95   @retval EFI_UNSUPPORTED       This function is not supported by the network interface.
  96
  97 **/
  98 EFI_STATUS
  99 EFIAPI
 100 SnpUndi32Reset (
 101   IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
 102   IN BOOLEAN                     ExtendedVerification
 103   )
 104 {
 105   SNP_DRIVER  *Snp;
 106   EFI_TPL     OldTpl;
 107   EFI_STATUS  Status;
 108
 109   //
 110   // Resolve Warning 4 unreferenced parameter problem
 111   //
 112   ExtendedVerification = 0;
 113   DEBUG ((EFI_D_WARN, "ExtendedVerification = %d is not implemented!\n", ExtendedVerification));
 114
 115   if (This == NULL) {
 116     return EFI_INVALID_PARAMETER;
 117   }
 118
 119   Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);
 120
 121   OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
 122
 123   switch (Snp->Mode.State) {
 124   case EfiSimpleNetworkInitialized:
 125     break;
 126
 127   case EfiSimpleNetworkStopped:
 128     Status = EFI_NOT_STARTED;
 129     goto ON_EXIT;
 130
 131   default:
 132     Status = EFI_DEVICE_ERROR;
 133     goto ON_EXIT;
 134   }
 135
 136   Status = PxeReset (Snp);
 137
 138 ON_EXIT:
 139   gBS->RestoreTPL (OldTpl);
 140
 141   return Status;
 142 }