Update SnpDxe to support dynamic media detect.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9994 6f19259b-4bc3-4df7-8a09-765794883524
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@@ -2,11 +2,11 @@
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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 - 2010, Intel Corporation. <BR>
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All rights reserved. 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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Copyright (c) 2004 - 2010, Intel Corporation. <BR>
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All rights reserved. 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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@@ -16,18 +16,18 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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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 transmit
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buffers that completed transmitting.
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Call undi to get the status of the interrupts, get the list of transmit
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buffers that completed transmitting.
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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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@param InterruptStatusPtr A non null pointer to contain the interrupt
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status.
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@param TransmitBufferListPtrs A non null pointer to contain the list of
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@param TransmitBufferListPtrs A non null pointer to contain the list of
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pointers of previous transmitted buffers whose
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transmission was completed asynchrnously.
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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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@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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@@ -54,6 +54,10 @@ PxeGetStatus (
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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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@@ -121,44 +125,53 @@ PxeGetStatus (
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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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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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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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@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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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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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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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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@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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@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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