Initial import.

[mirror_edk2.git] / EdkModulePkg / Universal / Network / Snp32_64 / Dxe / stop.c

/*++\r
Copyright (c) 2006, 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
  stop.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
EFI_STATUS\r
pxe_stop (\r
  SNP_DRIVER *snp\r
  )\r
/*++\r
\r
Routine Description:\r
 this routine calls undi to stop the interface and changes the snp state\r
\r
Arguments:\r
  snp  - pointer to snp driver structure\r
\r
Returns:\r
\r
--*/\r
{\r
  snp->cdb.OpCode     = PXE_OPCODE_STOP;\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->if_num;\r
  snp->cdb.Control    = PXE_CONTROL_LAST_CDB_IN_LIST;\r
\r
  //\r
  // Issue UNDI command\r
  //\r
  DEBUG ((EFI_D_NET, "\nsnp->undi.stop()  "));\r
\r
  (*snp->issue_undi32_command) ((UINT64) (UINTN) &snp->cdb);\r
\r
  if (snp->cdb.StatCode != PXE_STATCODE_SUCCESS) {\r
    DEBUG (\r
      (EFI_D_WARN,\r
      "\nsnp->undi.stop()  %xh:%xh\n",\r
      snp->cdb.StatCode,\r
      snp->cdb.StatFlags)\r
      );\r
\r
    return EFI_DEVICE_ERROR;\r
  }\r
  //\r
  // Set simple network state to Started and return success.\r
  //\r
  snp->mode.State = EfiSimpleNetworkStopped;\r
  return EFI_SUCCESS;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
snp_undi32_stop (\r
  IN EFI_SIMPLE_NETWORK_PROTOCOL *this\r
  )\r
/*++\r
\r
Routine Description:\r
 This is the SNP interface routine for stopping the interface.\r
 This routine basically retrieves snp structure, checks the SNP state and\r
 calls the pxe_stop routine to actually stop the undi interface\r
\r
Arguments:\r
  this  - context pointer\r
\r
Returns:\r
\r
--*/\r
{\r
  SNP_DRIVER  *snp;\r
\r
  if (this == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);\r
\r
  if (snp == NULL) {\r
    return EFI_DEVICE_ERROR;\r
  }\r
\r
  switch (snp->mode.State) {\r
  case EfiSimpleNetworkStarted:\r
    break;\r
\r
  case EfiSimpleNetworkStopped:\r
    return EFI_NOT_STARTED;\r
\r
  case EfiSimpleNetworkInitialized:\r
    return EFI_DEVICE_ERROR;\r
\r
  default:\r
    return EFI_DEVICE_ERROR;\r
  }\r
\r
  return pxe_stop (snp);\r
}\r