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OvmfPkg/VirtioNetDxe: map VRINGs using VirtioRingMap()

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When device is behind the IOMMU then driver need to pass the device
address when programing the bus master. The patch uses VirtioRingMap() to
map the VRING system physical address[es] to device address[es].

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>
This commit is contained in:
Brijesh Singh
2017-09-14 16:22:41 -05:00
committed by Laszlo Ersek
parent 55dd5a673b
commit 940baec09c
5 changed files with 58 additions and 20 deletions
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10
OvmfPkg/VirtioNetDxe/SnpSharedHelpers.c
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@@ -55,15 +55,19 @@ VirtioNetShutdownTx (
/**
Release TX and RX VRING resources.
@param[in,out] Dev The VNET_DEV driver instance which was using the ring.
@param[in,out] Ring The virtio ring to clean up.
@param[in,out] Dev The VNET_DEV driver instance which was using
the ring.
@param[in,out] Ring The virtio ring to clean up.
@param[in] RingMap A token return from the VirtioRingMap()
*/
VOID
EFIAPI
VirtioNetUninitRing (
IN OUT VNET_DEV *Dev,
IN OUT VRING *Ring
IN OUT VRING *Ring,
IN VOID *RingMap
)
{
Dev->VirtIo->UnmapSharedBuffer (Dev->VirtIo, RingMap);
VirtioRingUninit (Dev->VirtIo, Ring);
}