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OvmfPkg/VirtioRngDxe: map host address to device address

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patch maps the host address to a device address for buffers (including
rings, device specifc request and response pointed by vring descriptor,
and any further memory reference by those request and response).

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>
[lersek@redhat.com: return EFI_DEVICE_ERROR if mapping fails in GetRNG]
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Brijesh Singh
2017-08-23 06:57:19 -04:00
committed by Laszlo Ersek
parent 4b725858de
commit 0a568ccbcb
2 changed files with 76 additions and 10 deletions
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OvmfPkg/VirtioRngDxe/VirtioRng.h
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@@ -38,6 +38,7 @@ typedef struct {
EFI_EVENT ExitBoot; // DriverBindingStart 0
VRING Ring; // VirtioRingInit 2
EFI_RNG_PROTOCOL Rng; // VirtioRngInit 1
VOID *RingMap; // VirtioRingMap 2
} VIRTIO_RNG_DEV;
#define VIRTIO_ENTROPY_SOURCE_FROM_RNG(RngPointer) \