diff options
| author | Brijesh Singh <brijesh.singh@amd.com> | 2017-09-14 16:22:47 -0500 |
|---|---|---|
| committer | Laszlo Ersek <lersek@redhat.com> | 2017-09-14 23:54:20 +0200 |
| commit | f60ed5ab7fb39f7327727facd56e58aedaebba31 (patch) | |
| tree | a7f6af3422f1a3b570afe858ea0d07d423ed3df5 /OvmfPkg/VirtioNetDxe | |
| parent | 8fa54a8a948fb5ea28be0caa27cedded64243741 (diff) | |
| download | edk2-f60ed5ab7fb39f7327727facd56e58aedaebba31.tar.gz edk2-f60ed5ab7fb39f7327727facd56e58aedaebba31.tar.bz2 edk2-f60ed5ab7fb39f7327727facd56e58aedaebba31.zip | |
OvmfPkg/VirtioNetDxe: negotiate VIRTIO_F_IOMMU_PLATFORM
VirtioNetDxe 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>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Diffstat (limited to 'OvmfPkg/VirtioNetDxe')
| -rw-r--r-- | OvmfPkg/VirtioNetDxe/SnpInitialize.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/OvmfPkg/VirtioNetDxe/SnpInitialize.c b/OvmfPkg/VirtioNetDxe/SnpInitialize.c index ffb3deefe0..9dff04ce60 100644 --- a/OvmfPkg/VirtioNetDxe/SnpInitialize.c +++ b/OvmfPkg/VirtioNetDxe/SnpInitialize.c @@ -562,7 +562,8 @@ VirtioNetInitialize ( ASSERT (Dev->Snm.MediaPresentSupported ==
!!(Features & VIRTIO_NET_F_STATUS));
- Features &= VIRTIO_NET_F_MAC | VIRTIO_NET_F_STATUS | VIRTIO_F_VERSION_1;
+ Features &= VIRTIO_NET_F_MAC | VIRTIO_NET_F_STATUS | VIRTIO_F_VERSION_1 |
+ VIRTIO_F_IOMMU_PLATFORM;
//
// In virtio-1.0, feature negotiation is expected to complete before queue
@@ -602,7 +603,7 @@ VirtioNetInitialize ( // step 5 -- keep only the features we want
//
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 ReleaseTxRing;
|