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| author | Brijesh Singh <brijesh.singh@amd.com> | 2017-08-25 06:37:47 -0400 |
|---|---|---|
| committer | Laszlo Ersek <lersek@redhat.com> | 2017-08-25 16:19:57 +0200 |
| commit | 4bef13da0022e3a748f9e6afc8ff197c2fb6764c (patch) | |
| tree | 9167a02435da52bfca46c4ae5b8a70314f7c3596 /OvmfPkg/VirtioRngDxe | |
| parent | 4fb268029e2263eecac8250496e05fc309e770c6 (diff) | |
| download | edk2-4bef13da0022e3a748f9e6afc8ff197c2fb6764c.tar.gz edk2-4bef13da0022e3a748f9e6afc8ff197c2fb6764c.tar.bz2 edk2-4bef13da0022e3a748f9e6afc8ff197c2fb6764c.zip | |
OvmfPkg/VirtioRngDxe: negotiate VIRTIO_F_IOMMU_PLATFORM
VirtioRngDxe driver has been updated to use IOMMU-like member functions
from VIRTIO_DEVICE_PROTOCOL to translate the system physical address to
device address. We do not need to do anything special when
VIRTIO_F_IOMMU_PLATFORM bit is present hence treat it in parallel with
VIRTIO_F_VERSION_1.
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/VirtioRngDxe')
| -rw-r--r-- | OvmfPkg/VirtioRngDxe/VirtioRng.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/OvmfPkg/VirtioRngDxe/VirtioRng.c b/OvmfPkg/VirtioRngDxe/VirtioRng.c index 4e67997881..80380bcdf8 100644 --- a/OvmfPkg/VirtioRngDxe/VirtioRng.c +++ b/OvmfPkg/VirtioRngDxe/VirtioRng.c @@ -279,7 +279,7 @@ VirtioRngInit ( goto Failed;
}
- Features &= VIRTIO_F_VERSION_1;
+ Features &= VIRTIO_F_VERSION_1 | VIRTIO_F_IOMMU_PLATFORM;
//
// In virtio-1.0, feature negotiation is expected to complete before queue
@@ -360,7 +360,7 @@ VirtioRngInit ( // step 5 -- Report understood features and guest-tuneables.
//
if (Dev->VirtIo->Revision < VIRTIO_SPEC_REVISION (1, 0, 0)) {
- Features &= ~(UINT64)VIRTIO_F_VERSION_1;
+ Features &= ~(UINT64)(VIRTIO_F_VERSION_1 | VIRTIO_F_IOMMU_PLATFORM);
Status = Dev->VirtIo->SetGuestFeatures (Dev->VirtIo, Features);
if (EFI_ERROR (Status)) {
goto UnmapQueue;
|