OvmfPkg/VirtioMmioDeviceLib: implement IOMMU-like member functions

The patch implements the newly added IOMMU-like member functions by
respectively delegating the job to:

- VIRTIO_DEVICE_PROTOCOL.AllocateSharedPages () ->
    MemoryAllocationLib.AllocatePages()

- VIRTIO_DEVICE_PROTOCOL.FreeSharedPages () ->
    MemoryAllocationLib.FreePages ()

- VIRTIO_DEVICE_PROTOCOL.MapSharedBuffer () -> no-op

- VIRTIO_DEVICE_PROTOCOL.UnmapSharedBuffer () -> no-op

Suggested-by: Laszlo Ersek <lersek@redhat.com>
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>
This commit is contained in:
Brijesh Singh
2017-08-23 06:57:16 -04:00
committed by Laszlo Ersek
parent 4157b8416a
commit 084cfc1a35
3 changed files with 99 additions and 2 deletions

View File

@@ -3,6 +3,7 @@
This driver produces Virtio Device Protocol instances for Virtio Mmio devices.
Copyright (C) 2013, ARM Ltd.
Copyright (C) 2017, AMD Inc. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available
under the terms and conditions of the BSD License which accompanies this
@@ -15,7 +16,6 @@
**/
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include "VirtioMmioDevice.h"
@@ -35,7 +35,11 @@ static VIRTIO_DEVICE_PROTOCOL mMmioDeviceProtocolTemplate = {
VirtioMmioGetDeviceStatus, // GetDeviceStatus
VirtioMmioSetDeviceStatus, // SetDeviceStatus
VirtioMmioDeviceWrite, // WriteDevice
VirtioMmioDeviceRead // ReadDevice
VirtioMmioDeviceRead, // ReadDevice
VirtioMmioAllocateSharedPages, // AllocateSharedPages
VirtioMmioFreeSharedPages, // FreeSharedPages
VirtioMmioMapSharedBuffer, // MapSharedBuffer
VirtioMmioUnmapSharedBuffer // UnmapSharedBuffer
};
/**