f381602727
2). Uniform the function description comments git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7143 6f19259b-4bc3-4df7-8a09-765794883524
153 lines
4.3 KiB
C
153 lines
4.3 KiB
C
/** @file
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Implementation of shuting down a network adapter.
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Copyright (c) 2004 - 2007, Intel Corporation. <BR>
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All rights reserved. This program and the accompanying materials are licensed
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and made available under the terms and conditions of the BSD License which
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accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "Snp.h"
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/**
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Call UNDI to shut down the interface.
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@param Snp Pointer to snp driver structure.
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@retval EFI_SUCCESS UNDI is shut down successfully.
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@retval EFI_DEVICE_ERROR UNDI could not be shut down.
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**/
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EFI_STATUS
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PxeShutdown (
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IN SNP_DRIVER *Snp
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)
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{
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Snp->Cdb.OpCode = PXE_OPCODE_SHUTDOWN;
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Snp->Cdb.OpFlags = PXE_OPFLAGS_NOT_USED;
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Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;
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Snp->Cdb.DBsize = PXE_DBSIZE_NOT_USED;
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Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED;
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Snp->Cdb.DBaddr = PXE_DBADDR_NOT_USED;
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Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;
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Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;
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Snp->Cdb.IFnum = Snp->IfNum;
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Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;
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//
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// Issue UNDI command and check result.
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//
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DEBUG ((EFI_D_INFO | EFI_D_NET, "\nsnp->undi.shutdown() "));
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(*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
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if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {
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//
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// UNDI could not be shutdown. Return UNDI error.
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//
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DEBUG ((EFI_D_ERROR, "\nsnp->undi.shutdown() %xh:%xh\n", Snp->Cdb.StatFlags, Snp->Cdb.StatCode));
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return EFI_DEVICE_ERROR;
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}
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//
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// Free allocated memory.
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//
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if (Snp->TxRxBuffer != NULL) {
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Snp->PciIo->FreeBuffer (
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Snp->PciIo,
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SNP_MEM_PAGES (Snp->TxRxBufferSize),
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(VOID *) Snp->TxRxBuffer
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);
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}
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Snp->TxRxBuffer = NULL;
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Snp->TxRxBufferSize = 0;
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return EFI_SUCCESS;
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}
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/**
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Resets a network adapter and leaves it in a state that is safe for another
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driver to initialize.
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This function releases the memory buffers assigned in the Initialize() call.
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Pending transmits and receives are lost, and interrupts are cleared and disabled.
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After this call, only the Initialize() and Stop() calls may be used. If the
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network interface was successfully shutdown, then EFI_SUCCESS will be returned.
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If the driver has not been initialized, EFI_DEVICE_ERROR will be returned.
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@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
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@retval EFI_SUCCESS The network interface was shutdown.
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@retval EFI_NOT_STARTED The network interface has not been started.
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@retval EFI_INVALID_PARAMETER This parameter was NULL or did not point to a valid
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EFI_SIMPLE_NETWORK_PROTOCOL structure.
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@retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
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**/
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EFI_STATUS
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EFIAPI
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SnpUndi32Shutdown (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This
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)
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{
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SNP_DRIVER *Snp;
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EFI_STATUS Status;
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EFI_TPL OldTpl;
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//
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// Get pointer to SNP driver instance for *This.
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//
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if (This == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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//
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// Return error if the SNP is not initialized.
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//
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switch (Snp->Mode.State) {
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case EfiSimpleNetworkInitialized:
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break;
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case EfiSimpleNetworkStopped:
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Status = EFI_NOT_STARTED;
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goto ON_EXIT;
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default:
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Status = EFI_DEVICE_ERROR;
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goto ON_EXIT;
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}
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Status = PxeShutdown (Snp);
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Snp->Mode.State = EfiSimpleNetworkStarted;
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Snp->Mode.ReceiveFilterSetting = 0;
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Snp->Mode.MCastFilterCount = 0;
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Snp->Mode.ReceiveFilterSetting = 0;
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ZeroMem (Snp->Mode.MCastFilter, sizeof Snp->Mode.MCastFilter);
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CopyMem (
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&Snp->Mode.CurrentAddress,
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&Snp->Mode.PermanentAddress,
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sizeof (EFI_MAC_ADDRESS)
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);
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gBS->CloseEvent (Snp->Snp.WaitForPacket);
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ON_EXIT:
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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