bd114d9f77
When device is behind IOMMU, driver is require to pass the device address of TxBuf in the Tx VRING. The patch adds helper functions and data structure to map and unmap the TxBuf system physical address to a device address. Since the TxBuf is returned back to caller from VirtioNetGetStatus() hence we use OrderedCollection interface to save the TxBuf system physical to device address mapping. After the TxBuf is succesfully transmitted VirtioNetUnmapTxBuf() does the reverse lookup in OrderedCollection data structure to get the system physical address of TxBuf for a given device address. Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Regression-tested-by: Laszlo Ersek <lersek@redhat.com> Tested-by: Laszlo Ersek <lersek@redhat.com>
62 lines
1.5 KiB
INI
62 lines
1.5 KiB
INI
## @file
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#
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# This driver produces Simple Network Protocol instances for virtio-net
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# devices.
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#
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# Copyright (C) 2013, Red Hat, Inc.
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#
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# This program and the accompanying materials are licensed and made available
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# under the terms and conditions of the BSD License which accompanies this
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# 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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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
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# WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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##
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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = VirtioNetDxe
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FILE_GUID = A92CDB4B-82F1-4E0B-A516-8A655D371524
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MODULE_TYPE = UEFI_DRIVER
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VERSION_STRING = 1.0
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ENTRY_POINT = VirtioNetEntryPoint
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[Sources]
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ComponentName.c
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DriverBinding.c
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EntryPoint.c
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Events.c
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SnpGetStatus.c
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SnpInitialize.c
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SnpMcastIpToMac.c
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SnpReceive.c
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SnpReceiveFilters.c
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SnpSharedHelpers.c
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SnpShutdown.c
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SnpStart.c
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SnpStop.c
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SnpTransmit.c
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SnpUnsupported.c
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[Packages]
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MdePkg/MdePkg.dec
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OvmfPkg/OvmfPkg.dec
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[LibraryClasses]
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BaseMemoryLib
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DebugLib
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DevicePathLib
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MemoryAllocationLib
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OrderedCollectionLib
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UefiBootServicesTableLib
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UefiDriverEntryPoint
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UefiLib
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VirtioLib
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[Protocols]
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gEfiSimpleNetworkProtocolGuid ## BY_START
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gEfiDevicePathProtocolGuid ## BY_START
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gVirtioDeviceProtocolGuid ## TO_START
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