7b4b93a247
This patch fixes a bug in SNP.GetStatus() interface. The UNDI driver may return multiple transmitted buffers in a single GetStatus command, while SNP.GetStatus could only return one pointer each time, the rest of them are lost. This patch fixes this issue by store these recycled pointer in a temporary buffer in SNP driver. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Fu Siyuan <siyuan.fu@intel.com> Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com> Reviewed-by: Ye Ting <ting.ye@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19623 6f19259b-4bc3-4df7-8a09-765794883524
267 lines
9.1 KiB
C
267 lines
9.1 KiB
C
/** @file
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Implementation of reading the current interrupt status and recycled transmit
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buffer status from a network interface.
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Copyright (c) 2004 - 2016, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed
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and made available under the terms and conditions of the BSD License which
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accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "Snp.h"
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/**
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Call undi to get the status of the interrupts, get the list of recycled transmit
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buffers that completed transmitting. The recycled transmit buffer address will
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be saved into Snp->RecycledTxBuf.
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@param Snp Pointer to snp driver structure.
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@param InterruptStatusPtr A non null pointer to contain the interrupt
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status.
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@param GetTransmittedBuf Set to TRUE to retrieve the recycled transmit
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buffer address.
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@retval EFI_SUCCESS The status of the network interface was retrieved.
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@retval EFI_DEVICE_ERROR The command could not be sent to the network
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interface.
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**/
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EFI_STATUS
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PxeGetStatus (
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SNP_DRIVER *Snp,
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UINT32 *InterruptStatusPtr,
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BOOLEAN GetTransmittedBuf
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)
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{
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PXE_DB_GET_STATUS *Db;
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UINT16 InterruptFlags;
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UINT32 Index;
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UINT64 *Tmp;
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Tmp = NULL;
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Db = Snp->Db;
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Snp->Cdb.OpCode = PXE_OPCODE_GET_STATUS;
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Snp->Cdb.OpFlags = 0;
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if (GetTransmittedBuf) {
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Snp->Cdb.OpFlags |= PXE_OPFLAGS_GET_TRANSMITTED_BUFFERS;
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ZeroMem (Db->TxBuffer, sizeof (Db->TxBuffer));
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}
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if (InterruptStatusPtr != NULL) {
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Snp->Cdb.OpFlags |= PXE_OPFLAGS_GET_INTERRUPT_STATUS;
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}
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if (Snp->MediaStatusSupported) {
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Snp->Cdb.OpFlags |= PXE_OPFLAGS_GET_MEDIA_STATUS;
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}
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Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;
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Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED;
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//
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// size DB for return of one buffer
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//
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Snp->Cdb.DBsize = (UINT16) ((sizeof (PXE_DB_GET_STATUS) - sizeof (Db->TxBuffer)) + sizeof (Db->TxBuffer[0]));
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Snp->Cdb.DBaddr = (UINT64)(UINTN) 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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//
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// Issue UNDI command and check result.
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//
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DEBUG ((EFI_D_NET, "\nSnp->undi.get_status() "));
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(*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
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if (Snp->Cdb.StatCode != EFI_SUCCESS) {
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DEBUG (
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(EFI_D_NET,
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"\nSnp->undi.get_status() %xh:%xh\n",
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Snp->Cdb.StatFlags,
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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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// report the values back..
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//
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if (InterruptStatusPtr != NULL) {
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InterruptFlags = (UINT16) (Snp->Cdb.StatFlags & PXE_STATFLAGS_GET_STATUS_INTERRUPT_MASK);
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*InterruptStatusPtr = 0;
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if ((InterruptFlags & PXE_STATFLAGS_GET_STATUS_RECEIVE) == PXE_STATFLAGS_GET_STATUS_RECEIVE) {
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*InterruptStatusPtr |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
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}
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if ((InterruptFlags & PXE_STATFLAGS_GET_STATUS_TRANSMIT) == PXE_STATFLAGS_GET_STATUS_TRANSMIT) {
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*InterruptStatusPtr |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;
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}
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if ((InterruptFlags & PXE_STATFLAGS_GET_STATUS_COMMAND) == PXE_STATFLAGS_GET_STATUS_COMMAND) {
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*InterruptStatusPtr |= EFI_SIMPLE_NETWORK_COMMAND_INTERRUPT;
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}
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if ((InterruptFlags & PXE_STATFLAGS_GET_STATUS_SOFTWARE) == PXE_STATFLAGS_GET_STATUS_SOFTWARE) {
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*InterruptStatusPtr |= EFI_SIMPLE_NETWORK_COMMAND_INTERRUPT;
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}
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}
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if (GetTransmittedBuf) {
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if ((Snp->Cdb.StatFlags & PXE_STATFLAGS_GET_STATUS_NO_TXBUFS_WRITTEN) == 0) {
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//
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// UNDI has written some transmitted buffer addresses into the DB. Store them into Snp->RecycledTxBuf.
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//
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for (Index = 0; Index < MAX_XMIT_BUFFERS; Index++) {
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if (Db->TxBuffer[Index] != 0) {
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if (Snp->RecycledTxBufCount == Snp->MaxRecycledTxBuf) {
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//
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// Snp->RecycledTxBuf is full, reallocate a new one.
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//
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if ((Snp->MaxRecycledTxBuf + SNP_TX_BUFFER_INCREASEMENT) >= SNP_MAX_TX_BUFFER_NUM) {
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return EFI_DEVICE_ERROR;
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}
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Tmp = AllocatePool (sizeof (UINT64) * (Snp->MaxRecycledTxBuf + SNP_TX_BUFFER_INCREASEMENT));
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if (Tmp == NULL) {
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return EFI_DEVICE_ERROR;
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}
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CopyMem (Tmp, Snp->RecycledTxBuf, sizeof (UINT64) * Snp->RecycledTxBufCount);
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FreePool (Snp->RecycledTxBuf);
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Snp->RecycledTxBuf = Tmp;
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Snp->MaxRecycledTxBuf += SNP_TX_BUFFER_INCREASEMENT;
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}
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Snp->RecycledTxBuf[Snp->RecycledTxBufCount] = Db->TxBuffer[Index];
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Snp->RecycledTxBufCount++;
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}
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}
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}
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}
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//
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// Update MediaPresent field of EFI_SIMPLE_NETWORK_MODE if the UNDI support
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// returning media status from GET_STATUS command
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//
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if (Snp->MediaStatusSupported) {
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Snp->Snp.Mode->MediaPresent =
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(BOOLEAN) (((Snp->Cdb.StatFlags & PXE_STATFLAGS_GET_STATUS_NO_MEDIA) != 0) ? FALSE : TRUE);
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}
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return EFI_SUCCESS;
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}
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/**
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Reads the current interrupt status and recycled transmit buffer status from a
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network interface.
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This function gets the current interrupt and recycled transmit buffer status
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from the network interface. The interrupt status is returned as a bit mask in
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InterruptStatus. If InterruptStatus is NULL, the interrupt status will not be
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read. If TxBuf is not NULL, a recycled transmit buffer address will be retrieved.
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If a recycled transmit buffer address is returned in TxBuf, then the buffer has
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been successfully transmitted, and the status for that buffer is cleared. If
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the status of the network interface is successfully collected, EFI_SUCCESS
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will be returned. If the driver has not been initialized, EFI_DEVICE_ERROR will
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be returned.
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@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
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@param InterruptStatus A pointer to the bit mask of the currently active
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interrupts (see "Related Definitions"). If this is NULL,
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the interrupt status will not be read from the device.
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If this is not NULL, the interrupt status will be read
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from the device. When the interrupt status is read, it
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will also be cleared. Clearing the transmit interrupt does
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not empty the recycled transmit buffer array.
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@param TxBuf Recycled transmit buffer address. The network interface
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will not transmit if its internal recycled transmit
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buffer array is full. Reading the transmit buffer does
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not clear the transmit interrupt. If this is NULL, then
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the transmit buffer status will not be read. If there
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are no transmit buffers to recycle and TxBuf is not NULL,
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TxBuf will be set to NULL.
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@retval EFI_SUCCESS The status of the network interface was retrieved.
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@retval EFI_NOT_STARTED The network interface has not been started.
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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
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interface.
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**/
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EFI_STATUS
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EFIAPI
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SnpUndi32GetStatus (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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OUT UINT32 *InterruptStatus, OPTIONAL
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OUT VOID **TxBuf OPTIONAL
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)
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{
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SNP_DRIVER *Snp;
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EFI_TPL OldTpl;
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EFI_STATUS Status;
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if (This == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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if (InterruptStatus == NULL && TxBuf == 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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return EFI_DEVICE_ERROR;
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}
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switch (Snp->Mode.State) {
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case EfiSimpleNetworkInitialized:
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break;
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case EfiSimpleNetworkStopped:
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Status = EFI_NOT_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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if (Snp->RecycledTxBufCount == 0 && TxBuf != NULL) {
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Status = PxeGetStatus (Snp, InterruptStatus, TRUE);
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} else {
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Status = PxeGetStatus (Snp, InterruptStatus, FALSE);
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}
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if (TxBuf != NULL) {
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//
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// Get a recycled buf from Snp->RecycledTxBuf
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//
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if (Snp->RecycledTxBufCount == 0) {
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*TxBuf = NULL;
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} else {
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Snp->RecycledTxBufCount--;
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*TxBuf = (VOID *) (UINTN) Snp->RecycledTxBuf[Snp->RecycledTxBufCount];
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}
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}
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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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