162 lines
4.1 KiB
C
162 lines
4.1 KiB
C
/** @file
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Implementation of starting a network adapter.
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Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "Snp.h"
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/**
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Call 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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@retval EFI_SUCCESS UNDI is started successfully.
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@retval EFI_DEVICE_ERROR UNDI could not be started.
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**/
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EFI_STATUS
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PxeStart (
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IN SNP_DRIVER *Snp
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)
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{
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PXE_CPB_START_31 *Cpb31;
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Cpb31 = 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->IfNum;
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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->IsSwUndi) {
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Snp->Cdb.CPBsize = (UINT16) sizeof (PXE_CPB_START_31);
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Snp->Cdb.CPBaddr = (UINT64)(UINTN) Cpb31;
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Cpb31->Delay = (UINT64)(UINTN) &SnpUndi32CallbackDelay;
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Cpb31->Block = (UINT64)(UINTN) &SnpUndi32CallbackBlock;
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//
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// Virtual == Physical. This can be set to zero.
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//
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Cpb31->Virt2Phys = (UINT64)(UINTN) 0;
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Cpb31->Mem_IO = (UINT64)(UINTN) &SnpUndi32CallbackMemio;
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Cpb31->Map_Mem = (UINT64)(UINTN) &SnpUndi32CallbackMap;
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Cpb31->UnMap_Mem = (UINT64)(UINTN) &SnpUndi32CallbackUnmap;
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Cpb31->Sync_Mem = (UINT64)(UINTN) &SnpUndi32CallbackSync;
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Cpb31->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->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 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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Change the state of a network interface from "stopped" to "started."
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This function starts a network interface. If the network interface successfully
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starts, then EFI_SUCCESS 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 started.
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@retval EFI_ALREADY_STARTED The network interface is already in the started state.
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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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@retval EFI_UNSUPPORTED This function is not supported by the network interface.
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**/
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EFI_STATUS
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EFIAPI
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SnpUndi32Start (
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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 = PxeStart (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->MapList[Index].VirtualAddress = 0;
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Snp->MapList[Index].MapCookie = 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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