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| author | Brijesh Singh <brijesh.singh@amd.com> | 2017-08-23 06:57:16 -0400 |
|---|---|---|
| committer | Laszlo Ersek <lersek@redhat.com> | 2017-08-25 10:42:18 +0200 |
| commit | 084cfc1a35d4d9775c73345485596a12a71fd2a6 (patch) | |
| tree | a7b51e3495d37fc2c65850fef835577bea60ac53 /OvmfPkg | |
| parent | 4157b8416a15ff25e0fee131a2391bb95ae21904 (diff) | |
| download | edk2-084cfc1a35d4d9775c73345485596a12a71fd2a6.tar.gz edk2-084cfc1a35d4d9775c73345485596a12a71fd2a6.tar.bz2 edk2-084cfc1a35d4d9775c73345485596a12a71fd2a6.zip | |
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>
Diffstat (limited to 'OvmfPkg')
3 files changed, 99 insertions, 2 deletions
diff --git a/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDevice.c b/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDevice.c index b1d443ea70..fce934e1e9 100644 --- a/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDevice.c +++ b/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDevice.c @@ -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
};
/**
diff --git a/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDevice.h b/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDevice.h index bedd635e1a..e5881d537f 100644 --- a/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDevice.h +++ b/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDevice.h @@ -3,6 +3,7 @@ Internal definitions for the VirtIo MMIO Device driver
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
@@ -25,6 +26,7 @@ #include <Library/IoLib.h>
#include <Library/UefiLib.h>
#include <Library/VirtioMmioDeviceLib.h>
+#include <Library/MemoryAllocationLib.h>
#define VIRTIO_MMIO_DEVICE_SIGNATURE SIGNATURE_32 ('V', 'M', 'I', 'O')
@@ -137,4 +139,38 @@ VirtioMmioSetGuestFeatures ( IN UINT64 Features
);
+EFI_STATUS
+EFIAPI
+VirtioMmioAllocateSharedPages (
+ IN VIRTIO_DEVICE_PROTOCOL *This,
+ IN UINTN NumPages,
+ OUT VOID **HostAddress
+ );
+
+VOID
+EFIAPI
+VirtioMmioFreeSharedPages (
+ IN VIRTIO_DEVICE_PROTOCOL *This,
+ IN UINTN NumPages,
+ IN VOID *HostAddress
+ );
+
+EFI_STATUS
+EFIAPI
+VirtioMmioMapSharedBuffer (
+ IN VIRTIO_DEVICE_PROTOCOL *This,
+ IN VIRTIO_MAP_OPERATION Operation,
+ IN VOID *HostAddress,
+ IN OUT UINTN *NumberOfBytes,
+ OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
+ OUT VOID **Mapping
+ );
+
+EFI_STATUS
+EFIAPI
+VirtioMmioUnmapSharedBuffer (
+ IN VIRTIO_DEVICE_PROTOCOL *This,
+ IN VOID *Mapping
+ );
+
#endif // _VIRTIO_MMIO_DEVICE_INTERNAL_H_
diff --git a/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceFunctions.c b/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceFunctions.c index 9142d4a162..644ec65e17 100644 --- a/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceFunctions.c +++ b/OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceFunctions.c @@ -293,3 +293,60 @@ VirtioMmioDeviceRead ( return EFI_SUCCESS;
}
+
+EFI_STATUS
+EFIAPI
+VirtioMmioAllocateSharedPages (
+ IN VIRTIO_DEVICE_PROTOCOL *This,
+ IN UINTN NumPages,
+ OUT VOID **HostAddress
+ )
+{
+ VOID *Buffer;
+
+ Buffer = AllocatePages (NumPages);
+ if (Buffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ *HostAddress = Buffer;
+ return EFI_SUCCESS;
+}
+
+VOID
+EFIAPI
+VirtioMmioFreeSharedPages (
+ IN VIRTIO_DEVICE_PROTOCOL *This,
+ IN UINTN NumPages,
+ IN VOID *HostAddress
+ )
+{
+ FreePages (HostAddress, NumPages);
+}
+
+EFI_STATUS
+EFIAPI
+VirtioMmioMapSharedBuffer (
+ IN VIRTIO_DEVICE_PROTOCOL *This,
+ IN VIRTIO_MAP_OPERATION Operation,
+ IN VOID *HostAddress,
+ IN OUT UINTN *NumberOfBytes,
+ OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
+ OUT VOID **Mapping
+ )
+{
+ *DeviceAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress;
+ *Mapping = NULL;
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
+VirtioMmioUnmapSharedBuffer (
+ IN VIRTIO_DEVICE_PROTOCOL *This,
+ IN VOID *Mapping
+ )
+{
+ return EFI_SUCCESS;
+}
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