+++ /dev/null
-/*++\r
-Copyright (c) 2006, Intel Corporation \r
-All rights reserved. This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php \r
- \r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
-\r
-Module name:\r
- receive.c\r
-\r
-Abstract:\r
-\r
-Revision history:\r
- 2000-Feb-03 M(f)J Genesis.\r
---*/\r
-\r
-\r
-#include "Snp.h"\r
-\r
-STATIC\r
-EFI_STATUS\r
-pxe_receive (\r
- SNP_DRIVER *snp,\r
- VOID *BufferPtr,\r
- UINTN *BuffSizePtr,\r
- UINTN *HeaderSizePtr,\r
- EFI_MAC_ADDRESS *SourceAddrPtr,\r
- EFI_MAC_ADDRESS *DestinationAddrPtr,\r
- UINT16 *ProtocolPtr\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- this routine calls undi to receive a packet and fills in the data in the\r
- input pointers!\r
- \r
-Arguments:\r
- snp - pointer to snp driver structure\r
- BufferPtr - pointer to the memory for the received data\r
- BuffSizePtr - is a pointer to the length of the buffer on entry and contains\r
- the length of the received data on return\r
- HeaderSizePtr - pointer to the header portion of the data received.\r
- SourceAddrPtr - optional parameter, is a pointer to contain the source\r
- ethernet address on return\r
- DestinationAddrPtr - optional parameter, is a pointer to contain the destination\r
- ethernet address on return\r
- ProtocolPtr - optional parameter, is a pointer to contain the protocol type\r
- from the ethernet header on return\r
-\r
-\r
-Returns:\r
-\r
---*/\r
-{\r
- PXE_CPB_RECEIVE *cpb;\r
- PXE_DB_RECEIVE *db;\r
- UINTN buf_size;\r
- UINT64 TempData;\r
-\r
- cpb = snp->cpb;\r
- db = snp->db;\r
- buf_size = *BuffSizePtr;\r
- //\r
- // IMPORTANT NOTE:\r
- // In case of the older 3.0 UNDI, if the input buffer address is beyond 4GB,\r
- // DO NOT call the map function on the given buffer, instead use\r
- // a global buffer. The reason is that UNDI3.0 has some unnecessary check of\r
- // making sure that all the addresses (whether or not they will be given\r
- // to the NIC ) supplied to it are below 4GB. It may or may not use\r
- // the mapped address after all (like in case of CPB and DB)!\r
- // Instead of using the global buffer whose address is allocated within the\r
- // 2GB limit if I start mapping the given buffer we lose the data, here is\r
- // why!!!\r
- // if our address is > 4GB, the map call creates another buffer below 2GB and\r
- // copies data to/from the original buffer to the mapped buffer either at\r
- // map time or unmap time depending on the map direction.\r
- // UNDI will not complain since we already mapped the buffer to be\r
- // within the 2GB limit but will not use (I know undi) the mapped address\r
- // since it does not give the user buffers to the NIC's receive unit,\r
- // It just copies the received packet into the user buffer using the virtual\r
- // (CPU) address rather than the mapped (device or physical) address.\r
- // When the UNDI call returns, if we then unmap the buffer, we will lose\r
- // the contents because unmap copies the contents of the mapped buffer into\r
- // the original buffer (since the direction is FROM_DEVICE) !!!\r
- //\r
- // this is not a problem in Undi 3.1 because this undi uses it's map callback\r
- // routine to map a cpu address to device address and it does it only if\r
- // it is giving the address to the device and unmaps it before using the cpu\r
- // address!\r
- //\r
- TempData = (UINT64) (UINTN) BufferPtr;\r
- if (snp->IsOldUndi && (TempData >= FOUR_GIGABYTES)) {\r
- cpb->BufferAddr = (UINT64) (UINTN) snp->receive_buf;\r
- cpb->BufferLen = (UINT32) (snp->init_info.MediaHeaderLen + snp->init_info.FrameDataLen);\r
- } else {\r
- cpb->BufferAddr = (UINT64) (UINTN) BufferPtr;\r
- cpb->BufferLen = (UINT32) *BuffSizePtr;\r
- }\r
-\r
- cpb->reserved = 0;\r
-\r
- snp->cdb.OpCode = PXE_OPCODE_RECEIVE;\r
- snp->cdb.OpFlags = PXE_OPFLAGS_NOT_USED;\r
-\r
- snp->cdb.CPBsize = sizeof (PXE_CPB_RECEIVE);\r
- snp->cdb.CPBaddr = (UINT64) (UINTN) cpb;\r
-\r
- snp->cdb.DBsize = sizeof (PXE_DB_RECEIVE);\r
- snp->cdb.DBaddr = (UINT64) (UINTN) db;\r
-\r
- snp->cdb.StatCode = PXE_STATCODE_INITIALIZE;\r
- snp->cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;\r
- snp->cdb.IFnum = snp->if_num;\r
- snp->cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;\r
-\r
- //\r
- // Issue UNDI command and check result.\r
- //\r
- DEBUG ((EFI_D_INFO, "\nsnp->undi.receive () "));\r
-\r
- (*snp->issue_undi32_command) ((UINT64) (UINTN) &snp->cdb);\r
-\r
- switch (snp->cdb.StatCode) {\r
- case PXE_STATCODE_SUCCESS:\r
- break;\r
-\r
- case PXE_STATCODE_NO_DATA:\r
- DEBUG (\r
- (EFI_D_INFO,\r
- "\nsnp->undi.receive () %xh:%xh\n",\r
- snp->cdb.StatFlags,\r
- snp->cdb.StatCode)\r
- );\r
-\r
- return EFI_NOT_READY;\r
-\r
- default:\r
- DEBUG (\r
- (EFI_D_ERROR,\r
- "\nsnp->undi.receive() %xh:%xh\n",\r
- snp->cdb.StatFlags,\r
- snp->cdb.StatCode)\r
- );\r
-\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- *BuffSizePtr = db->FrameLen;\r
-\r
- if (HeaderSizePtr != NULL) {\r
- *HeaderSizePtr = db->MediaHeaderLen;\r
- }\r
-\r
- if (SourceAddrPtr != NULL) {\r
- CopyMem (SourceAddrPtr, &db->SrcAddr, snp->mode.HwAddressSize);\r
- }\r
-\r
- if (DestinationAddrPtr != NULL) {\r
- CopyMem (DestinationAddrPtr, &db->DestAddr, snp->mode.HwAddressSize);\r
- }\r
-\r
- if (ProtocolPtr != NULL) {\r
- *ProtocolPtr = (UINT16) PXE_SWAP_UINT16 (db->Protocol); /* we need to do the byte swapping */\r
- }\r
-\r
- TempData = (UINT64) (UINTN) BufferPtr;\r
- if (snp->IsOldUndi && (TempData >= FOUR_GIGABYTES)) {\r
- CopyMem (BufferPtr, snp->receive_buf, snp->init_info.MediaHeaderLen + snp->init_info.FrameDataLen);\r
- }\r
-\r
- return (*BuffSizePtr <= buf_size) ? EFI_SUCCESS : EFI_BUFFER_TOO_SMALL;\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-snp_undi32_receive (\r
- IN EFI_SIMPLE_NETWORK_PROTOCOL * this,\r
- OUT UINTN *HeaderSizePtr OPTIONAL,\r
- IN OUT UINTN *BuffSizePtr,\r
- OUT VOID *BufferPtr,\r
- OUT EFI_MAC_ADDRESS * SourceAddrPtr OPTIONAL,\r
- OUT EFI_MAC_ADDRESS * DestinationAddrPtr OPTIONAL,\r
- OUT UINT16 *ProtocolPtr OPTIONAL\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- This is the SNP interface routine for receiving network data.\r
- This routine basically retrieves snp structure, checks the SNP state and\r
- calls the pxe_receive routine to actually do the receive!\r
-\r
-Arguments:\r
- this - context pointer\r
- HeaderSizePtr - optional parameter and is a pointer to the header portion of\r
- the data received.\r
- BuffSizePtr - is a pointer to the length of the buffer on entry and contains\r
- the length of the received data on return\r
- BufferPtr - pointer to the memory for the received data\r
- SourceAddrPtr - optional parameter, is a pointer to contain the source\r
- ethernet address on return\r
- DestinationAddrPtr - optional parameter, is a pointer to contain the destination\r
- ethernet address on return\r
- ProtocolPtr - optional parameter, is a pointer to contain the protocol type\r
- from the ethernet header on return\r
-\r
-Returns:\r
-\r
---*/\r
-{\r
- SNP_DRIVER *snp;\r
-\r
- if (this == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);\r
-\r
- if (snp == NULL) {\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- switch (snp->mode.State) {\r
- case EfiSimpleNetworkInitialized:\r
- break;\r
-\r
- case EfiSimpleNetworkStopped:\r
- return EFI_NOT_STARTED;\r
-\r
- case EfiSimpleNetworkStarted:\r
- return EFI_DEVICE_ERROR;\r
-\r
- default:\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- if ((BuffSizePtr == NULL) || (BufferPtr == NULL)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (!snp->mode.ReceiveFilterSetting) {\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- return pxe_receive (\r
- snp,\r
- BufferPtr,\r
- BuffSizePtr,\r
- HeaderSizePtr,\r
- SourceAddrPtr,\r
- DestinationAddrPtr,\r
- ProtocolPtr\r
- );\r
-}\r
projects / mirror_edk2.git / blobdiff