mirror of https://github.com/acidanthera/audk.git
OvmfPkg/Virtio10Dxe: implement IOMMU-like member functions
The patch implements the newly added IOMMU-like member functions by
respectively delegating the job to:
- VIRTIO_DEVICE_PROTOCOL.AllocateSharedPages() ->
EFI_PCI_IO_PROTOCOL.AllocateBuffer()
- VIRTIO_DEVICE_PROTOCOL.FreeSharedPages() ->
EFI_PCI_IO_PROTOCOL.FreeBuffer()
- VIRTIO_DEVICE_PROTOCOL.MapSharedBuffer() ->
EFI_PCI_IO_PROTOCOL.Map()
- VIRTIO_DEVICE_PROTOCOL.UnmapSharedBuffer() ->
EFI_PCI_IO_PROTOCOL.Unmap()
Suggested-by: Laszlo Ersek <lersek@redhat.com>
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>
This commit is contained in:
Brijesh Singh
Laszlo Ersek
parent
878115261a
commit
de1c57c5f5
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@ -2,6 +2,7 @@
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A non-transitional driver for VirtIo 1.0 PCI devices.
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Copyright (C) 2016, 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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@ -15,6 +16,7 @@
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#include <IndustryStandard/Pci.h>
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#include <IndustryStandard/Virtio.h>
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#include <Protocol/PciIo.h>
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#include <Protocol/PciRootBridgeIo.h>
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#include <Protocol/VirtioDevice.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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@ -772,6 +774,117 @@ Virtio10ReadDevice (
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return Status;
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}
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STATIC
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EFI_STATUS
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EFIAPI
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Virtio10AllocateSharedPages (
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IN VIRTIO_DEVICE_PROTOCOL *This,
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IN UINTN Pages,
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IN OUT VOID **HostAddress
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)
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{
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VIRTIO_1_0_DEV *Dev;
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EFI_STATUS Status;
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Dev = VIRTIO_1_0_FROM_VIRTIO_DEVICE (This);
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Status = Dev->PciIo->AllocateBuffer (
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Dev->PciIo,
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AllocateAnyPages,
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EfiBootServicesData,
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Pages,
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HostAddress,
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EFI_PCI_ATTRIBUTE_MEMORY_CACHED
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);
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return Status;
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}
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STATIC
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VOID
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EFIAPI
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Virtio10FreeSharedPages (
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IN VIRTIO_DEVICE_PROTOCOL *This,
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IN UINTN Pages,
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IN VOID *HostAddress
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)
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{
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VIRTIO_1_0_DEV *Dev;
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Dev = VIRTIO_1_0_FROM_VIRTIO_DEVICE (This);
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Dev->PciIo->FreeBuffer (
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Dev->PciIo,
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Pages,
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HostAddress
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);
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}
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STATIC
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EFI_STATUS
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EFIAPI
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Virtio10MapSharedBuffer (
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IN VIRTIO_DEVICE_PROTOCOL *This,
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IN VIRTIO_MAP_OPERATION Operation,
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IN VOID *HostAddress,
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IN OUT UINTN *NumberOfBytes,
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OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
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OUT VOID **Mapping
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)
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{
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EFI_STATUS Status;
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VIRTIO_1_0_DEV *Dev;
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EFI_PCI_IO_PROTOCOL_OPERATION PciIoOperation;
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Dev = VIRTIO_1_0_FROM_VIRTIO_DEVICE (This);
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//
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// Map VIRTIO_MAP_OPERATION to EFI_PCI_IO_PROTOCOL_OPERATION
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//
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switch (Operation) {
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case VirtioOperationBusMasterRead:
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PciIoOperation = EfiPciIoOperationBusMasterRead;
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break;
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case VirtioOperationBusMasterWrite:
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PciIoOperation = EfiPciIoOperationBusMasterWrite;
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break;
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case VirtioOperationBusMasterCommonBuffer:
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PciIoOperation = EfiPciIoOperationBusMasterCommonBuffer;
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break;
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default:
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return EFI_INVALID_PARAMETER;
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}
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Status = Dev->PciIo->Map (
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Dev->PciIo,
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PciIoOperation,
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HostAddress,
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NumberOfBytes,
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DeviceAddress,
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Mapping
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);
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return Status;
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}
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STATIC
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EFI_STATUS
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EFIAPI
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Virtio10UnmapSharedBuffer (
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IN VIRTIO_DEVICE_PROTOCOL *This,
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IN VOID *Mapping
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)
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{
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EFI_STATUS Status;
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VIRTIO_1_0_DEV *Dev;
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Dev = VIRTIO_1_0_FROM_VIRTIO_DEVICE (This);
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Status = Dev->PciIo->Unmap (
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Dev->PciIo,
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Mapping
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);
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return Status;
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}
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STATIC CONST VIRTIO_DEVICE_PROTOCOL mVirtIoTemplate = {
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VIRTIO_SPEC_REVISION (1, 0, 0),
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@ -788,7 +901,11 @@ STATIC CONST VIRTIO_DEVICE_PROTOCOL mVirtIoTemplate = {
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Virtio10GetDeviceStatus,
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Virtio10SetDeviceStatus,
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Virtio10WriteDevice,
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Virtio10ReadDevice
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Virtio10ReadDevice,
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Virtio10AllocateSharedPages,
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Virtio10FreeSharedPages,
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Virtio10MapSharedBuffer,
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Virtio10UnmapSharedBuffer
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};
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@ -906,7 +1023,8 @@ Virtio10BindingStart (
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goto ClosePciIo;
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}
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SetAttributes = EFI_PCI_IO_ATTRIBUTE_BUS_MASTER;
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SetAttributes = (EFI_PCI_IO_ATTRIBUTE_BUS_MASTER |
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EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE);
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UpdateAttributes (&Device->CommonConfig, &SetAttributes);
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UpdateAttributes (&Device->NotifyConfig, &SetAttributes);
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UpdateAttributes (&Device->SpecificConfig, &SetAttributes);
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