diff options
| author | Brijesh Singh <brijesh.singh@amd.com> | 2017-08-25 06:37:46 -0400 |
|---|---|---|
| committer | Laszlo Ersek <lersek@redhat.com> | 2017-08-25 16:19:48 +0200 |
| commit | 4fb268029e2263eecac8250496e05fc309e770c6 (patch) | |
| tree | afa800611a78a9e86393762bc76a1fc0f5f63261 /OvmfPkg/Include | |
| parent | 0b9c0c65400262ee41eb8f4f4d9079fab4777437 (diff) | |
OvmfPkg/Virtio10: define VIRTIO_F_IOMMU_PLATFORM feature bit
This feature indicates that the device is behind an IOMMU that translates
bus addresses from the device into physical addresses in memory. If this
feature bit is set to 0, then the device emits physical addresses which
are not translated further, even though an IOMMU may be present.
see [1] for more infromation
[1] https://lists.oasis-open.org/archives/virtio-dev/201610/msg00121.html
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/Include')
| -rw-r--r-- | OvmfPkg/Include/IndustryStandard/Virtio10.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/OvmfPkg/Include/IndustryStandard/Virtio10.h b/OvmfPkg/Include/IndustryStandard/Virtio10.h index 4c9b62a3cf..c5efb5cfcb 100644 --- a/OvmfPkg/Include/IndustryStandard/Virtio10.h +++ b/OvmfPkg/Include/IndustryStandard/Virtio10.h @@ -2,6 +2,7 @@ Definitions from the VirtIo 1.0 specification (csprd05).
Copyright (C) 2016, Red Hat, Inc.
+ Copyright (C) 2017, AMD, Inc.
This program and the accompanying materials are licensed and made available
under the terms and conditions of the BSD License which accompanies this
@@ -81,6 +82,7 @@ typedef struct { //
// VirtIo 1.0 reserved (device-independent) feature bits
//
-#define VIRTIO_F_VERSION_1 BIT32
+#define VIRTIO_F_VERSION_1 BIT32
+#define VIRTIO_F_IOMMU_PLATFORM BIT33
#endif // _VIRTIO_1_0_H_
|