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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4730 6f19259b-4bc3-4df7-8a09-765794883524
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vanjeff
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/** @file
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Copyright (c) 2004 - 2007, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which 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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Module name:
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start.c
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Abstract:
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Revision history:
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2000-Feb-07 M(f)J Genesis.
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**/
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#include "Snp.h"
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/**
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this routine calls undi to start the interface and changes the snp state!
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@param snp pointer to snp driver structure
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**/
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EFI_STATUS
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pxe_start (
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SNP_DRIVER *snp
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)
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{
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PXE_CPB_START_31 *cpb_31;
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cpb_31 = snp->cpb;
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//
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// Initialize UNDI Start CDB for H/W UNDI
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//
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snp->cdb.OpCode = PXE_OPCODE_START;
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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->if_num;
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snp->cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;
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//
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// Make changes to H/W UNDI Start CDB if this is
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// a S/W UNDI.
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//
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if (snp->is_swundi) {
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snp->cdb.CPBsize = sizeof (PXE_CPB_START_31);
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snp->cdb.CPBaddr = (UINT64)(UINTN) cpb_31;
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cpb_31->Delay = (UINT64)(UINTN) &snp_undi32_callback_delay;
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cpb_31->Block = (UINT64)(UINTN) &snp_undi32_callback_block;
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//
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// Virtual == Physical. This can be set to zero.
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//
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cpb_31->Virt2Phys = (UINT64)(UINTN) 0;
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cpb_31->Mem_IO = (UINT64)(UINTN) &snp_undi32_callback_memio;
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cpb_31->Map_Mem = (UINT64)(UINTN) &snp_undi32_callback_map;
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cpb_31->UnMap_Mem = (UINT64)(UINTN) &snp_undi32_callback_unmap;
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cpb_31->Sync_Mem = (UINT64)(UINTN) &snp_undi32_callback_sync;
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cpb_31->Unique_ID = (UINT64)(UINTN) snp;
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}
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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_NET, "\nsnp->undi.start() "));
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(*snp->issue_undi32_command) ((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 started. Return UNDI error.
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//
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DEBUG (
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(EFI_D_ERROR,
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"\nsnp->undi.start() %xh:%xh\n",
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snp->cdb.StatCode,
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snp->cdb.StatFlags)
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);
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return EFI_DEVICE_ERROR;
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}
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//
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// Set simple network state to Started and return success.
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//
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snp->mode.State = EfiSimpleNetworkStarted;
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return EFI_SUCCESS;
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}
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/**
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This is the SNP interface routine for starting the interface
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This routine basically retrieves snp structure, checks the SNP state and
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calls the pxe_start routine to actually do start undi interface
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@param This context pointer
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@retval EFI_INVALID_PARAMETER "This" is Null
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@retval No SNP driver can be extracted from "This"
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@retval EFI_ALREADY_STARTED The state of SNP is EfiSimpleNetworkStarted or
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EfiSimpleNetworkInitialized
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@retval EFI_DEVICE_ERROR The state of SNP is other than
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EfiSimpleNetworkStarted,
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EfiSimpleNetworkInitialized, and
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EfiSimpleNetworkStopped
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@retval EFI_SUCCESS UNDI interface is succesfully started
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@retval Other Error occurs while calling pxe_start function.
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**/
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EFI_STATUS
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EFIAPI
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snp_undi32_start (
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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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UINTN Index;
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EFI_TPL OldTpl;
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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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switch (Snp->mode.State) {
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case EfiSimpleNetworkStopped:
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break;
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case EfiSimpleNetworkStarted:
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case EfiSimpleNetworkInitialized:
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Status = EFI_ALREADY_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 = pxe_start (Snp);
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if (EFI_ERROR (Status)) {
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goto ON_EXIT;
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}
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//
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// clear the map_list in SNP structure
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//
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for (Index = 0; Index < MAX_MAP_LENGTH; Index++) {
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Snp->map_list[Index].virt = 0;
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Snp->map_list[Index].map_cookie = 0;
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}
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Snp->mode.MCastFilterCount = 0;
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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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