278 lines
8.2 KiB
C
278 lines
8.2 KiB
C
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/** @file
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Implementation of initializing 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 initialize the interface.
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@param Snp Pointer to snp driver structure.
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@param CableDetectFlag Do/don't detect the cable (depending on what
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undi supports).
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@retval EFI_SUCCESS UNDI is initialized successfully.
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@retval EFI_DEVICE_ERROR UNDI could not be initialized.
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@retval Other Other errors as indicated.
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**/
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EFI_STATUS
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PxeInit (
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SNP_DRIVER *Snp,
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UINT16 CableDetectFlag
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)
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{
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PXE_CPB_INITIALIZE *Cpb;
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VOID *Addr;
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EFI_STATUS Status;
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Status = EFI_SUCCESS;
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Cpb = Snp->Cpb;
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if (Snp->TxRxBufferSize != 0) {
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Status = Snp->PciIo->AllocateBuffer (
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Snp->PciIo,
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AllocateAnyPages,
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EfiBootServicesData,
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SNP_MEM_PAGES (Snp->TxRxBufferSize),
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&Addr,
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0
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);
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if (Status != EFI_SUCCESS) {
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DEBUG (
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(EFI_D_ERROR,
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"\nSnp->PxeInit() AllocateBuffer %xh (%r)\n",
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Status,
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Status)
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);
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return Status;
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}
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ASSERT (Addr);
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Snp->TxRxBuffer = Addr;
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}
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Cpb->MemoryAddr = (UINT64)(UINTN) Snp->TxRxBuffer;
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Cpb->MemoryLength = Snp->TxRxBufferSize;
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//
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// let UNDI decide/detect these values
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//
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Cpb->LinkSpeed = 0;
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Cpb->TxBufCnt = 0;
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Cpb->TxBufSize = 0;
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Cpb->RxBufCnt = 0;
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Cpb->RxBufSize = 0;
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Cpb->DuplexMode = PXE_DUPLEX_DEFAULT;
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Cpb->LoopBackMode = LOOPBACK_NORMAL;
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Snp->Cdb.OpCode = PXE_OPCODE_INITIALIZE;
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Snp->Cdb.OpFlags = CableDetectFlag;
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Snp->Cdb.CPBsize = (UINT16) sizeof (PXE_CPB_INITIALIZE);
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Snp->Cdb.DBsize = (UINT16) sizeof (PXE_DB_INITIALIZE);
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Snp->Cdb.CPBaddr = (UINT64)(UINTN) Snp->Cpb;
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Snp->Cdb.DBaddr = (UINT64)(UINTN) Snp->Db;
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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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DEBUG ((EFI_D_NET, "\nSnp->undi.initialize() "));
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(*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
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//
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// There are two fields need to be checked here:
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// First is the upper two bits (14 & 15) in the CDB.StatFlags field. Until these bits change to report
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// PXE_STATFLAGS_COMMAND_COMPLETE or PXE_STATFLAGS_COMMAND_FAILED, the command has not been executed by the UNDI.
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// Second is the CDB.StatCode field. After command execution completes, either successfully or not,
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// the CDB.StatCode field contains the result of the command execution.
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//
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if ((((Snp->Cdb.StatFlags) & PXE_STATFLAGS_STATUS_MASK) == PXE_STATFLAGS_COMMAND_COMPLETE) &&
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(Snp->Cdb.StatCode == PXE_STATCODE_SUCCESS)) {
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//
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// If cable detect feature is enabled in CDB.OpFlags, check the CDB.StatFlags to see if there is an
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// active connection to this network device. If the no media StatFlag is set, the UNDI and network
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// device are still initialized.
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//
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if (CableDetectFlag == PXE_OPFLAGS_INITIALIZE_DETECT_CABLE) {
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if(((Snp->Cdb.StatFlags) & PXE_STATFLAGS_INITIALIZED_NO_MEDIA) != PXE_STATFLAGS_INITIALIZED_NO_MEDIA) {
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Snp->Mode.MediaPresent = TRUE;
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} else {
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Snp->Mode.MediaPresent = FALSE;
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}
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}
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Snp->Mode.State = EfiSimpleNetworkInitialized;
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Status = EFI_SUCCESS;
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} else {
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DEBUG (
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(EFI_D_WARN,
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"\nSnp->undi.initialize() %xh:%xh\n",
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Snp->Cdb.StatFlags,
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Snp->Cdb.StatCode)
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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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Status = EFI_DEVICE_ERROR;
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}
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return Status;
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}
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/**
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Resets a network adapter and allocates the transmit and receive buffers
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required by the network interface; optionally, also requests allocation of
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additional transmit and receive buffers.
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This function allocates the transmit and receive buffers required by the network
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interface. If this allocation fails, then EFI_OUT_OF_RESOURCES is returned.
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If the allocation succeeds and the network interface is successfully initialized,
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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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@param ExtraRxBufferSize The size, in bytes, of the extra receive buffer space
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that the driver should allocate for the network interface.
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Some network interfaces will not be able to use the
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extra buffer, and the caller will not know if it is
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actually being used.
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@param ExtraTxBufferSize The size, in bytes, of the extra transmit buffer space
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that the driver should allocate for the network interface.
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Some network interfaces will not be able to use the
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extra buffer, and the caller will not know if it is
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actually being used.
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@retval EFI_SUCCESS The network interface was initialized.
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@retval EFI_NOT_STARTED The network interface has not been started.
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@retval EFI_OUT_OF_RESOURCES There was not enough memory for the transmit and
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receive buffers.
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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 The increased buffer size feature is not supported.
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**/
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EFI_STATUS
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EFIAPI
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SnpUndi32Initialize (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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IN UINTN ExtraRxBufferSize OPTIONAL,
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IN UINTN ExtraTxBufferSize OPTIONAL
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)
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{
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EFI_STATUS EfiStatus;
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SNP_DRIVER *Snp;
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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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if (Snp == NULL) {
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EfiStatus = EFI_INVALID_PARAMETER;
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goto ON_EXIT;
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}
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switch (Snp->Mode.State) {
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case EfiSimpleNetworkStarted:
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break;
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case EfiSimpleNetworkStopped:
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EfiStatus = EFI_NOT_STARTED;
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goto ON_EXIT;
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default:
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EfiStatus = EFI_DEVICE_ERROR;
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goto ON_EXIT;
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}
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EfiStatus = gBS->CreateEvent (
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EVT_NOTIFY_WAIT,
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TPL_NOTIFY,
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&SnpWaitForPacketNotify,
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Snp,
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&Snp->Snp.WaitForPacket
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);
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if (EFI_ERROR (EfiStatus)) {
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Snp->Snp.WaitForPacket = NULL;
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EfiStatus = EFI_DEVICE_ERROR;
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goto ON_EXIT;
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}
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//
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//
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//
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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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//
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// Compute tx/rx buffer sizes based on UNDI init info and parameters.
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//
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Snp->TxRxBufferSize = (UINT32) (Snp->InitInfo.MemoryRequired + ExtraRxBufferSize + ExtraTxBufferSize);
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//
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// If UNDI support cable detect for INITIALIZE command, try it first.
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//
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if (Snp->CableDetectSupported) {
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if (PxeInit (Snp, PXE_OPFLAGS_INITIALIZE_DETECT_CABLE) == EFI_SUCCESS) {
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goto ON_EXIT;
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}
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}
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Snp->Mode.MediaPresent = FALSE;
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EfiStatus = PxeInit (Snp, PXE_OPFLAGS_INITIALIZE_DO_NOT_DETECT_CABLE);
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if (EFI_ERROR (EfiStatus)) {
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gBS->CloseEvent (Snp->Snp.WaitForPacket);
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goto ON_EXIT;
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}
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//
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// Try to update the MediaPresent field of EFI_SIMPLE_NETWORK_MODE if the UNDI support it.
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//
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if (Snp->MediaStatusSupported) {
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PxeGetStatus (Snp, NULL, FALSE);
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}
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ON_EXIT:
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gBS->RestoreTPL (OldTpl);
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return EfiStatus;
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}
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