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audk/MdeModulePkg/Universal/Network/SnpDxe/Transmit.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:
transmit.c
Abstract:
Revision history:
2000-Feb-03 M(f)J Genesis.
**/
#include "Snp.h"
/**
This routine calls undi to create the meadia header for the given data buffer.
@param snp pointer to SNP driver structure
@param MacHeaderPtr address where the media header will be filled in.
@param MacHeaderSize size of the memory at MacHeaderPtr
@param BufferPtr data buffer pointer
@param BufferLength Size of data in the BufferPtr
@param DestinationAddrPtr address of the destination mac address buffer
@param SourceAddrPtr address of the source mac address buffer
@param ProtocolPtr address of the protocol type
@retval EFI_SUCCESS if successfully completed the undi call
@retval Other error return from undi call.
**/
STATIC
EFI_STATUS
pxe_fillheader (
SNP_DRIVER *snp,
VOID *MacHeaderPtr,
UINTN MacHeaderSize,
VOID *BufferPtr,
UINTN BufferLength,
EFI_MAC_ADDRESS *DestinationAddrPtr,
EFI_MAC_ADDRESS *SourceAddrPtr,
UINT16 *ProtocolPtr
)
{
PXE_CPB_FILL_HEADER_FRAGMENTED *cpb;
cpb = snp->cpb;
if (SourceAddrPtr) {
CopyMem (
(VOID *) cpb->SrcAddr,
(VOID *) SourceAddrPtr,
snp->mode.HwAddressSize
);
} else {
CopyMem (
(VOID *) cpb->SrcAddr,
(VOID *) &(snp->mode.CurrentAddress),
snp->mode.HwAddressSize
);
}
CopyMem (
(VOID *) cpb->DestAddr,
(VOID *) DestinationAddrPtr,
snp->mode.HwAddressSize
);
//
// we need to do the byte swapping
//
cpb->Protocol = (UINT16) PXE_SWAP_UINT16 (*ProtocolPtr);
cpb->PacketLen = (UINT32) (BufferLength);
cpb->MediaHeaderLen = (UINT16) MacHeaderSize;
cpb->FragCnt = 2;
cpb->reserved = 0;
cpb->FragDesc[0].FragAddr = (UINT64)(UINTN) MacHeaderPtr;
cpb->FragDesc[0].FragLen = (UINT32) MacHeaderSize;
cpb->FragDesc[1].FragAddr = (UINT64)(UINTN) BufferPtr;
cpb->FragDesc[1].FragLen = (UINT32) BufferLength;
cpb->FragDesc[0].reserved = cpb->FragDesc[1].reserved = 0;
snp->cdb.OpCode = PXE_OPCODE_FILL_HEADER;
snp->cdb.OpFlags = PXE_OPFLAGS_FILL_HEADER_FRAGMENTED;
snp->cdb.DBsize = PXE_DBSIZE_NOT_USED;
snp->cdb.DBaddr = PXE_DBADDR_NOT_USED;
snp->cdb.CPBsize = sizeof (PXE_CPB_FILL_HEADER_FRAGMENTED);
snp->cdb.CPBaddr = (UINT64)(UINTN) cpb;
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.fill_header() "));
(*snp->issue_undi32_command) ((UINT64) (UINTN) &snp->cdb);
switch (snp->cdb.StatCode) {
case PXE_STATCODE_SUCCESS:
return EFI_SUCCESS;
case PXE_STATCODE_INVALID_PARAMETER:
DEBUG (
(EFI_D_ERROR,
"\nsnp->undi.fill_header() %xh:%xh\n",
snp->cdb.StatFlags,
snp->cdb.StatCode)
);
return EFI_INVALID_PARAMETER;
default:
DEBUG (
(EFI_D_ERROR,
"\nsnp->undi.fill_header() %xh:%xh\n",
snp->cdb.StatFlags,
snp->cdb.StatCode)
);
return EFI_DEVICE_ERROR;
}
}
/**
This routine calls undi to transmit the given data buffer
@param snp pointer to SNP driver structure
@param BufferPtr data buffer pointer
@param BufferLength Size of data in the BufferPtr
@retval EFI_SUCCESS if successfully completed the undi call
@retval Other error return from undi call.
**/
STATIC
EFI_STATUS
pxe_transmit (
SNP_DRIVER *snp,
VOID *BufferPtr,
UINTN BufferLength
)
{
PXE_CPB_TRANSMIT *cpb;
EFI_STATUS Status;
cpb = snp->cpb;
cpb->FrameAddr = (UINT64) (UINTN) BufferPtr;
cpb->DataLen = (UINT32) BufferLength;
cpb->MediaheaderLen = 0;
cpb->reserved = 0;
snp->cdb.OpFlags = PXE_OPFLAGS_TRANSMIT_WHOLE;
snp->cdb.CPBsize = sizeof (PXE_CPB_TRANSMIT);
snp->cdb.CPBaddr = (UINT64)(UINTN) cpb;
snp->cdb.OpCode = PXE_OPCODE_TRANSMIT;
snp->cdb.DBsize = PXE_DBSIZE_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.transmit() "));
DEBUG ((EFI_D_NET, "\nsnp->cdb.OpCode == %x", snp->cdb.OpCode));
DEBUG ((EFI_D_NET, "\nsnp->cdb.CPBaddr == %X", snp->cdb.CPBaddr));
DEBUG ((EFI_D_NET, "\nsnp->cdb.DBaddr == %X", snp->cdb.DBaddr));
DEBUG ((EFI_D_NET, "\ncpb->FrameAddr == %X\n", cpb->FrameAddr));
(*snp->issue_undi32_command) ((UINT64) (UINTN) &snp->cdb);
DEBUG ((EFI_D_NET, "\nexit snp->undi.transmit() "));
DEBUG ((EFI_D_NET, "\nsnp->cdb.StatCode == %r", snp->cdb.StatCode));
//
// we will unmap the buffers in get_status call, not here
//
switch (snp->cdb.StatCode) {
case PXE_STATCODE_SUCCESS:
return EFI_SUCCESS;
case PXE_STATCODE_QUEUE_FULL:
case PXE_STATCODE_BUSY:
Status = EFI_NOT_READY;
break;
default:
Status = EFI_DEVICE_ERROR;
}
DEBUG (
(EFI_D_ERROR,
"\nsnp->undi.transmit() %xh:%xh\n",
snp->cdb.StatFlags,
snp->cdb.StatCode)
);
return Status;
}
/**
This is the snp interface routine for transmitting a packet. this routine
basically retrieves the snp structure, checks the snp state and calls
pxe_fill_header and pxe_transmit calls to complete the transmission.
@param this pointer to SNP driver context
@param MacHeaderSize size of the memory at MacHeaderPtr
@param BufferLength Size of data in the BufferPtr
@param BufferPtr data buffer pointer
@param SourceAddrPtr address of the source mac address buffer
@param DestinationAddrPtr address of the destination mac address buffer
@param ProtocolPtr address of the protocol type
@retval EFI_SUCCESS if successfully completed the undi call
@retval Other error return from undi call.
**/
EFI_STATUS
EFIAPI
snp_undi32_transmit (
IN EFI_SIMPLE_NETWORK_PROTOCOL * this,
IN UINTN MacHeaderSize,
IN UINTN BufferLength,
IN VOID *BufferPtr,
IN EFI_MAC_ADDRESS * SourceAddrPtr OPTIONAL,
IN EFI_MAC_ADDRESS * DestinationAddrPtr OPTIONAL,
IN UINT16 *ProtocolPtr OPTIONAL
)
{
SNP_DRIVER *snp;
EFI_STATUS Status;
EFI_TPL OldTpl;
if (this == NULL) {
return EFI_INVALID_PARAMETER;
}
snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
if (snp == NULL) {
return EFI_DEVICE_ERROR;
}
switch (snp->mode.State) {
case EfiSimpleNetworkInitialized:
break;
case EfiSimpleNetworkStopped:
Status = EFI_NOT_STARTED;
goto ON_EXIT;
default:
Status = EFI_DEVICE_ERROR;
goto ON_EXIT;
}
if (BufferPtr == NULL) {
Status = EFI_INVALID_PARAMETER;
goto ON_EXIT;
}
if (BufferLength < snp->mode.MediaHeaderSize) {
Status = EFI_BUFFER_TOO_SMALL;
goto ON_EXIT;
}
//
// if the MacHeaderSize is non-zero, we need to fill up the header and for that
// we need the destination address and the protocol
//
if (MacHeaderSize != 0) {
if (MacHeaderSize != snp->mode.MediaHeaderSize || DestinationAddrPtr == 0 || ProtocolPtr == 0) {
Status = EFI_INVALID_PARAMETER;
goto ON_EXIT;
}
Status = pxe_fillheader (
snp,
BufferPtr,
MacHeaderSize,
(UINT8 *) BufferPtr + MacHeaderSize,
BufferLength - MacHeaderSize,
DestinationAddrPtr,
SourceAddrPtr,
ProtocolPtr
);
if (EFI_ERROR (Status)) {
goto ON_EXIT;
}
}
Status = pxe_transmit (snp, BufferPtr, BufferLength);
ON_EXIT:
gBS->RestoreTPL (OldTpl);
return Status;
}
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