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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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5
OvmfPkg/VirtioNetDxe/TechNotes.txt
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@@ -70,8 +70,9 @@ faithfully indented) that implement the transition.
VirtioNetInitialize | | VirtioNetShutdown
VirtioNetInitRing {Rx, Tx} | | VirtioNetShutdownRx [SnpSharedHelpers.c]
VirtioRingInit | | VirtioNetShutdownTx [SnpSharedHelpers.c]
VirtioNetInitTx | | VirtioNetUninitRing [SnpSharedHelpers.c]
VirtioNetInitRx | | {Tx, Rx}
VirtioRingMap | | VirtioNetUninitRing [SnpSharedHelpers.c]
VirtioNetInitTx | | {Tx, Rx}
VirtioNetInitRx | | VirtIo->UnmapSharedBuffer
| | VirtioRingUninit
v |
+-----------------------------+