audk/MdeModulePkg/Universal/Network/SnpDxe/reset.c

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/** @file
Copyright (c) 2004 - 2007, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module name:
reset.c
Abstract:
Revision history:
2000-Feb-09 M(f)J Genesis.
**/
#include "Snp.h"
/**
This routine calls undi to reset the nic.
@param snp pointer to the snp driver structure
@return EFI_SUCCESSFUL for a successful completion
@return other for failed calls
**/
STATIC
EFI_STATUS
pxe_reset (
SNP_DRIVER *snp
)
{
snp->cdb.OpCode = PXE_OPCODE_RESET;
snp->cdb.OpFlags = PXE_OPFLAGS_NOT_USED;
snp->cdb.CPBsize = PXE_CPBSIZE_NOT_USED;
snp->cdb.DBsize = PXE_DBSIZE_NOT_USED;
snp->cdb.CPBaddr = PXE_CPBADDR_NOT_USED;
snp->cdb.DBaddr = PXE_DBADDR_NOT_USED;
snp->cdb.StatCode = PXE_STATCODE_INITIALIZE;
snp->cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;
snp->cdb.IFnum = snp->if_num;
snp->cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;
//
// Issue UNDI command and check result.
//
DEBUG ((EFI_D_NET, "\nsnp->undi.reset() "));
(*snp->issue_undi32_command) ((UINT64)(UINTN) &snp->cdb);
if (snp->cdb.StatCode != PXE_STATCODE_SUCCESS) {
DEBUG (
(EFI_D_WARN,
"\nsnp->undi32.reset() %xh:%xh\n",
snp->cdb.StatFlags,
snp->cdb.StatCode)
);
//
// UNDI could not be reset. Return UNDI error.
//
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
This is the SNP interface routine for resetting the NIC
This routine basically retrieves snp structure, checks the SNP state and
calls the pxe_reset routine to actually do the reset!
@param this context pointer
@param ExtendedVerification not implemented
**/
EFI_STATUS
EFIAPI
snp_undi32_reset (
IN EFI_SIMPLE_NETWORK_PROTOCOL *this,
IN BOOLEAN ExtendedVerification
)
{
SNP_DRIVER *snp;
EFI_TPL OldTpl;
EFI_STATUS Status;
//
// Resolve Warning 4 unreferenced parameter problem
//
ExtendedVerification = 0;
DEBUG ((EFI_D_WARN, "ExtendedVerification = %d is not implemented!\n", ExtendedVerification));
if (this == NULL) {
return EFI_INVALID_PARAMETER;
}
snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
switch (snp->mode.State) {
case EfiSimpleNetworkInitialized:
break;
case EfiSimpleNetworkStopped:
Status = EFI_NOT_STARTED;
goto ON_EXIT;
default:
Status = EFI_DEVICE_ERROR;
goto ON_EXIT;
}
Status = pxe_reset (snp);
ON_EXIT:
gBS->RestoreTPL (OldTpl);
return Status;
}