sync comments, fix function header, rename variable name to follow coding style.

[mirror_edk2.git] / MdeModulePkg / Universal / Network / SnpDxe / Reset.c

/** @file\r
Copyright (c) 2004 - 2007, Intel Corporation\r
All rights reserved. This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
Module name:\r
  reset.c\r
\r
Abstract:\r
\r
Revision history:\r
  2000-Feb-09 M(f)J   Genesis.\r
\r
**/\r
\r
#include "Snp.h"\r
\r
\r
/**\r
  This routine calls undi to reset the nic.\r
\r
  @param  Snp                   pointer to the snp driver structure\r
\r
  @return EFI_SUCCESSFUL for a successful completion\r
  @return other for failed calls\r
\r
**/\r
EFI_STATUS\r
PxeReset (\r
  SNP_DRIVER *Snp\r
  )\r
{\r
  Snp->Cdb.OpCode     = PXE_OPCODE_RESET;\r
  Snp->Cdb.OpFlags    = PXE_OPFLAGS_NOT_USED;\r
  Snp->Cdb.CPBsize    = PXE_CPBSIZE_NOT_USED;\r
  Snp->Cdb.DBsize     = PXE_DBSIZE_NOT_USED;\r
  Snp->Cdb.CPBaddr    = PXE_CPBADDR_NOT_USED;\r
  Snp->Cdb.DBaddr     = PXE_DBADDR_NOT_USED;\r
  Snp->Cdb.StatCode   = PXE_STATCODE_INITIALIZE;\r
  Snp->Cdb.StatFlags  = PXE_STATFLAGS_INITIALIZE;\r
  Snp->Cdb.IFnum      = Snp->IfNum;\r
  Snp->Cdb.Control    = PXE_CONTROL_LAST_CDB_IN_LIST;\r
\r
  //\r
  // Issue UNDI command and check result.\r
  //\r
  DEBUG ((EFI_D_NET, "\nsnp->undi.reset()  "));\r
\r
  (*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);\r
\r
  if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {\r
    DEBUG (\r
      (EFI_D_WARN,\r
      "\nsnp->undi32.reset()  %xh:%xh\n",\r
      Snp->Cdb.StatFlags,\r
      Snp->Cdb.StatCode)\r
      );\r
\r
    //\r
    // UNDI could not be reset. Return UNDI error.\r
    //\r
    return EFI_DEVICE_ERROR;\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
\r
/**\r
  Resets a network adapter and reinitializes it with the parameters that were\r
  provided in the previous call to Initialize().\r
\r
  This function resets a network adapter and reinitializes it with the parameters\r
  that were provided in the previous call to Initialize(). The transmit and \r
  receive queues are emptied and all pending interrupts are cleared.\r
  Receive filters, the station address, the statistics, and the multicast-IP-to-HW \r
  MAC addresses are not reset by this call. If the network interface was \r
  successfully reset, then EFI_SUCCESS will be returned. If the driver has not \r
  been initialized, EFI_DEVICE_ERROR will be returned.\r
\r
  @param This                 A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.\r
  @param ExtendedVerification Indicates that the driver may perform a more \r
                              exhaustive verification operation of the device \r
                              during reset.\r
\r
  @retval EFI_SUCCESS           The network interface was reset.\r
  @retval EFI_NOT_STARTED       The network interface has not been started.\r
  @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.\r
  @retval EFI_DEVICE_ERROR      The command could not be sent to the network interface.\r
  @retval EFI_UNSUPPORTED       This function is not supported by the network interface.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SnpUndi32Reset (\r
  IN EFI_SIMPLE_NETWORK_PROTOCOL *This,\r
  IN BOOLEAN                     ExtendedVerification\r
  )\r
{\r
  SNP_DRIVER  *Snp;\r
  EFI_TPL     OldTpl;\r
  EFI_STATUS  Status;\r
\r
  //\r
  // Resolve Warning 4 unreferenced parameter problem\r
  //\r
  ExtendedVerification = 0;\r
  DEBUG ((EFI_D_WARN, "ExtendedVerification = %d is not implemented!\n", ExtendedVerification));\r
\r
  if (This == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);\r
\r
  OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
\r
  switch (Snp->Mode.State) {\r
  case EfiSimpleNetworkInitialized:\r
    break;\r
\r
  case EfiSimpleNetworkStopped:\r
    Status = EFI_NOT_STARTED;\r
    goto ON_EXIT;\r
\r
  default:\r
    Status = EFI_DEVICE_ERROR;\r
    goto ON_EXIT;\r
  }\r
\r
  Status = PxeReset (Snp);\r
\r
ON_EXIT:\r
  gBS->RestoreTPL (OldTpl);\r
\r
  return Status;\r
}\r