mirror of https://github.com/acidanthera/audk.git
256 lines
8.3 KiB
C
256 lines
8.3 KiB
C
/*++
|
|
Copyright (c) 2006, 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:
|
|
receive.c
|
|
|
|
Abstract:
|
|
|
|
Revision history:
|
|
2000-Feb-03 M(f)J Genesis.
|
|
--*/
|
|
|
|
|
|
#include "Snp.h"
|
|
|
|
EFI_STATUS
|
|
pxe_receive (
|
|
SNP_DRIVER *snp,
|
|
VOID *BufferPtr,
|
|
UINTN *BuffSizePtr,
|
|
UINTN *HeaderSizePtr,
|
|
EFI_MAC_ADDRESS *SourceAddrPtr,
|
|
EFI_MAC_ADDRESS *DestinationAddrPtr,
|
|
UINT16 *ProtocolPtr
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
this routine calls undi to receive a packet and fills in the data in the
|
|
input pointers!
|
|
|
|
Arguments:
|
|
snp - pointer to snp driver structure
|
|
BufferPtr - pointer to the memory for the received data
|
|
BuffSizePtr - is a pointer to the length of the buffer on entry and contains
|
|
the length of the received data on return
|
|
HeaderSizePtr - pointer to the header portion of the data received.
|
|
SourceAddrPtr - optional parameter, is a pointer to contain the source
|
|
ethernet address on return
|
|
DestinationAddrPtr - optional parameter, is a pointer to contain the destination
|
|
ethernet address on return
|
|
ProtocolPtr - optional parameter, is a pointer to contain the protocol type
|
|
from the ethernet header on return
|
|
|
|
|
|
Returns:
|
|
|
|
--*/
|
|
{
|
|
PXE_CPB_RECEIVE *cpb;
|
|
PXE_DB_RECEIVE *db;
|
|
UINTN buf_size;
|
|
UINT64 TempData;
|
|
|
|
cpb = snp->cpb;
|
|
db = snp->db;
|
|
buf_size = *BuffSizePtr;
|
|
//
|
|
// IMPORTANT NOTE:
|
|
// In case of the older 3.0 UNDI, if the input buffer address is beyond 4GB,
|
|
// DO NOT call the map function on the given buffer, instead use
|
|
// a global buffer. The reason is that UNDI3.0 has some unnecessary check of
|
|
// making sure that all the addresses (whether or not they will be given
|
|
// to the NIC ) supplied to it are below 4GB. It may or may not use
|
|
// the mapped address after all (like in case of CPB and DB)!
|
|
// Instead of using the global buffer whose address is allocated within the
|
|
// 2GB limit if I start mapping the given buffer we lose the data, here is
|
|
// why!!!
|
|
// if our address is > 4GB, the map call creates another buffer below 2GB and
|
|
// copies data to/from the original buffer to the mapped buffer either at
|
|
// map time or unmap time depending on the map direction.
|
|
// UNDI will not complain since we already mapped the buffer to be
|
|
// within the 2GB limit but will not use (I know undi) the mapped address
|
|
// since it does not give the user buffers to the NIC's receive unit,
|
|
// It just copies the received packet into the user buffer using the virtual
|
|
// (CPU) address rather than the mapped (device or physical) address.
|
|
// When the UNDI call returns, if we then unmap the buffer, we will lose
|
|
// the contents because unmap copies the contents of the mapped buffer into
|
|
// the original buffer (since the direction is FROM_DEVICE) !!!
|
|
//
|
|
// this is not a problem in Undi 3.1 because this undi uses it's map callback
|
|
// routine to map a cpu address to device address and it does it only if
|
|
// it is giving the address to the device and unmaps it before using the cpu
|
|
// address!
|
|
//
|
|
TempData = (UINT64) (UINTN) BufferPtr;
|
|
if (snp->IsOldUndi && (TempData >= FOUR_GIGABYTES)) {
|
|
cpb->BufferAddr = (UINT64) (UINTN) snp->receive_buf;
|
|
cpb->BufferLen = (UINT32) (snp->init_info.MediaHeaderLen + snp->init_info.FrameDataLen);
|
|
} else {
|
|
cpb->BufferAddr = (UINT64) (UINTN) BufferPtr;
|
|
cpb->BufferLen = (UINT32) *BuffSizePtr;
|
|
}
|
|
|
|
cpb->reserved = 0;
|
|
|
|
snp->cdb.OpCode = PXE_OPCODE_RECEIVE;
|
|
snp->cdb.OpFlags = PXE_OPFLAGS_NOT_USED;
|
|
|
|
snp->cdb.CPBsize = sizeof (PXE_CPB_RECEIVE);
|
|
snp->cdb.CPBaddr = (UINT64) (UINTN) cpb;
|
|
|
|
snp->cdb.DBsize = sizeof (PXE_DB_RECEIVE);
|
|
snp->cdb.DBaddr = (UINT64) (UINTN) db;
|
|
|
|
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_INFO, "\nsnp->undi.receive () "));
|
|
|
|
(*snp->issue_undi32_command) ((UINT64) (UINTN) &snp->cdb);
|
|
|
|
switch (snp->cdb.StatCode) {
|
|
case PXE_STATCODE_SUCCESS:
|
|
break;
|
|
|
|
case PXE_STATCODE_NO_DATA:
|
|
DEBUG (
|
|
(EFI_D_INFO,
|
|
"\nsnp->undi.receive () %xh:%xh\n",
|
|
snp->cdb.StatFlags,
|
|
snp->cdb.StatCode)
|
|
);
|
|
|
|
return EFI_NOT_READY;
|
|
|
|
default:
|
|
DEBUG (
|
|
(EFI_D_ERROR,
|
|
"\nsnp->undi.receive() %xh:%xh\n",
|
|
snp->cdb.StatFlags,
|
|
snp->cdb.StatCode)
|
|
);
|
|
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
*BuffSizePtr = db->FrameLen;
|
|
|
|
if (HeaderSizePtr != NULL) {
|
|
*HeaderSizePtr = db->MediaHeaderLen;
|
|
}
|
|
|
|
if (SourceAddrPtr != NULL) {
|
|
CopyMem (SourceAddrPtr, &db->SrcAddr, snp->mode.HwAddressSize);
|
|
}
|
|
|
|
if (DestinationAddrPtr != NULL) {
|
|
CopyMem (DestinationAddrPtr, &db->DestAddr, snp->mode.HwAddressSize);
|
|
}
|
|
|
|
if (ProtocolPtr != NULL) {
|
|
*ProtocolPtr = (UINT16) PXE_SWAP_UINT16 (db->Protocol); /* we need to do the byte swapping */
|
|
}
|
|
|
|
TempData = (UINT64) (UINTN) BufferPtr;
|
|
if (snp->IsOldUndi && (TempData >= FOUR_GIGABYTES)) {
|
|
CopyMem (BufferPtr, snp->receive_buf, snp->init_info.MediaHeaderLen + snp->init_info.FrameDataLen);
|
|
}
|
|
|
|
return (*BuffSizePtr <= buf_size) ? EFI_SUCCESS : EFI_BUFFER_TOO_SMALL;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
snp_undi32_receive (
|
|
IN EFI_SIMPLE_NETWORK_PROTOCOL * this,
|
|
OUT UINTN *HeaderSizePtr OPTIONAL,
|
|
IN OUT UINTN *BuffSizePtr,
|
|
OUT VOID *BufferPtr,
|
|
OUT EFI_MAC_ADDRESS * SourceAddrPtr OPTIONAL,
|
|
OUT EFI_MAC_ADDRESS * DestinationAddrPtr OPTIONAL,
|
|
OUT UINT16 *ProtocolPtr OPTIONAL
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
This is the SNP interface routine for receiving network data.
|
|
This routine basically retrieves snp structure, checks the SNP state and
|
|
calls the pxe_receive routine to actually do the receive!
|
|
|
|
Arguments:
|
|
this - context pointer
|
|
HeaderSizePtr - optional parameter and is a pointer to the header portion of
|
|
the data received.
|
|
BuffSizePtr - is a pointer to the length of the buffer on entry and contains
|
|
the length of the received data on return
|
|
BufferPtr - pointer to the memory for the received data
|
|
SourceAddrPtr - optional parameter, is a pointer to contain the source
|
|
ethernet address on return
|
|
DestinationAddrPtr - optional parameter, is a pointer to contain the destination
|
|
ethernet address on return
|
|
ProtocolPtr - optional parameter, is a pointer to contain the protocol type
|
|
from the ethernet header on return
|
|
|
|
Returns:
|
|
|
|
--*/
|
|
{
|
|
SNP_DRIVER *snp;
|
|
|
|
if (this == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);
|
|
|
|
if (snp == NULL) {
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
switch (snp->mode.State) {
|
|
case EfiSimpleNetworkInitialized:
|
|
break;
|
|
|
|
case EfiSimpleNetworkStopped:
|
|
return EFI_NOT_STARTED;
|
|
|
|
case EfiSimpleNetworkStarted:
|
|
return EFI_DEVICE_ERROR;
|
|
|
|
default:
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
if ((BuffSizePtr == NULL) || (BufferPtr == NULL)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (!snp->mode.ReceiveFilterSetting) {
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
return pxe_receive (
|
|
snp,
|
|
BufferPtr,
|
|
BuffSizePtr,
|
|
HeaderSizePtr,
|
|
SourceAddrPtr,
|
|
DestinationAddrPtr,
|
|
ProtocolPtr
|
|
);
|
|
}
|