OvmfPkg/VirtioNetDxe: alloc RxBuf using AllocateSharedPages()
When device is behind the IOMMU, VirtioNetDxe is required to use the device address in bus master operations. RxBuf is allocated using AllocatePool() which returns the system physical address. The patch uses VIRTIO_DEVICE_PROTOCOL.AllocateSharedPages() to allocate the RxBuf and map with VirtioMapAllBytesInSharedBuffer() so that we can obtain the device address for RxBuf. 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>
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Laszlo Ersek
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@@ -4,6 +4,7 @@
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Protocol instances for virtio-net devices.
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Copyright (C) 2013, Red Hat, Inc.
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Copyright (c) 2017, AMD Inc, All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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@@ -86,6 +87,9 @@ typedef struct {
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// VirtioNetInitRing
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UINT8 *RxBuf; // VirtioNetInitRx
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UINT16 RxLastUsed; // VirtioNetInitRx
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UINTN RxBufNrPages; // VirtioNetInitRx
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EFI_PHYSICAL_ADDRESS RxBufDeviceBase; // VirtioNetInitRx
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VOID *RxBufMap; // VirtioNetInitRx
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VRING TxRing; // VirtioNetInitRing
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VOID *TxRingMap; // VirtioRingMap and
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