diff --git a/OvmfPkg/Include/IndustryStandard/Virtio10.h b/OvmfPkg/Include/IndustryStandard/Virtio10.h index de692c1d1e..4c9b62a3cf 100644 --- a/OvmfPkg/Include/IndustryStandard/Virtio10.h +++ b/OvmfPkg/Include/IndustryStandard/Virtio10.h @@ -17,6 +17,11 @@ #include +// +// Subsystem Device IDs (to be) introduced in VirtIo 1.0 +// +#define VIRTIO_SUBSYSTEM_GPU_DEVICE 16 + // // Structures for parsing the VirtIo 1.0 specific PCI capabilities from the // config space diff --git a/OvmfPkg/Include/IndustryStandard/VirtioGpu.h b/OvmfPkg/Include/IndustryStandard/VirtioGpu.h new file mode 100644 index 0000000000..9c3516e71e --- /dev/null +++ b/OvmfPkg/Include/IndustryStandard/VirtioGpu.h @@ -0,0 +1,216 @@ +/** @file + + Virtio GPU Device specific type and macro definitions. + + At the time of this writing, the Virtio 1.0 specification has not + incorporated the GPU device yet. The following work-in-progress specification + is used as basis for the implementation: + + - https://lists.oasis-open.org/archives/virtio-dev/201605/msg00002.html + - https://www.kraxel.org/virtio/ + + This header file is minimal, and only defines the types and macros that are + necessary for the OvmfPkg implementation. + + Copyright (C) 2016, Red Hat, Inc. + + This program and the accompanying materials are licensed and made available + under the terms and conditions of the BSD License which accompanies this + distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT + WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +#ifndef _VIRTIO_GPU_H_ +#define _VIRTIO_GPU_H_ + +#include + +// +// Queue number for sending control commands. +// +#define VIRTIO_GPU_CONTROL_QUEUE 0 + +// +// Command and response types. +// +typedef enum { + // + // Commands related to mode setup: + // + // - create/release a host-side 2D resource, + // + VirtioGpuCmdResourceCreate2d = 0x0101, + VirtioGpuCmdResourceUnref = 0x0102, + // + // - attach/detach guest RAM to/from a host-side 2D resource, + // + VirtioGpuCmdResourceAttachBacking = 0x0106, + VirtioGpuCmdResourceDetachBacking = 0x0107, + // + // - assign/unassign a host-side 2D resource to/from a scanout ("head"). + // + VirtioGpuCmdSetScanout = 0x0103, + + // + // Commands related to drawing: + // + // - transfer a guest RAM update to the host-side 2D resource (does not imply + // host display refresh), + // + VirtioGpuCmdTransferToHost2d = 0x0105, + // + // - trigger a host display refresh from the 2D resource. + // + VirtioGpuCmdResourceFlush = 0x0104, + + // + // Success code for all of the above commands. + // + VirtioGpuRespOkNodata = 0x1100, +} VIRTIO_GPU_CONTROL_TYPE; + +// +// Common request/response header. +// +#define VIRTIO_GPU_FLAG_FENCE BIT0 + +#pragma pack (1) +typedef struct { + // + // The guest sets Type to VirtioGpuCmd* in the requests. The host sets Type + // to VirtioGpuResp* in the responses. + // + UINT32 Type; + + // + // Fencing forces the host to complete the command before producing a + // response. + // + UINT32 Flags; + UINT64 FenceId; + + // + // Unused. + // + UINT32 CtxId; + UINT32 Padding; +} VIRTIO_GPU_CONTROL_HEADER; +#pragma pack () + +// +// Rectangle structure used by several operations. +// +#pragma pack (1) +typedef struct { + UINT32 X; + UINT32 Y; + UINT32 Width; + UINT32 Height; +} VIRTIO_GPU_RECTANGLE; +#pragma pack () + +// +// Request structure for VirtioGpuCmdResourceCreate2d. +// +typedef enum { + // + // 32-bit depth, BGRX component order, X component ignored. + // + VirtioGpuFormatB8G8R8X8Unorm = 2, +} VIRTIO_GPU_FORMATS; + +#pragma pack (1) +typedef struct { + VIRTIO_GPU_CONTROL_HEADER Header; + UINT32 ResourceId; // note: 0 is invalid + UINT32 Format; // from VIRTIO_GPU_FORMATS + UINT32 Width; + UINT32 Height; +} VIRTIO_GPU_RESOURCE_CREATE_2D; +#pragma pack () + +// +// Request structure for VirtioGpuCmdResourceUnref. +// +#pragma pack (1) +typedef struct { + VIRTIO_GPU_CONTROL_HEADER Header; + UINT32 ResourceId; + UINT32 Padding; +} VIRTIO_GPU_RESOURCE_UNREF; +#pragma pack () + +// +// Request structure for VirtioGpuCmdResourceAttachBacking. +// +// The spec allows for a scatter-gather list, but for simplicity we hard-code a +// single guest buffer. +// +#pragma pack (1) +typedef struct { + UINT64 Addr; + UINT32 Length; + UINT32 Padding; +} VIRTIO_GPU_MEM_ENTRY; + +typedef struct { + VIRTIO_GPU_CONTROL_HEADER Header; + UINT32 ResourceId; + UINT32 NrEntries; // number of entries: constant 1 + VIRTIO_GPU_MEM_ENTRY Entry; +} VIRTIO_GPU_RESOURCE_ATTACH_BACKING; +#pragma pack () + +// +// Request structure for VirtioGpuCmdResourceDetachBacking. +// +#pragma pack (1) +typedef struct { + VIRTIO_GPU_CONTROL_HEADER Header; + UINT32 ResourceId; + UINT32 Padding; +} VIRTIO_GPU_RESOURCE_DETACH_BACKING; +#pragma pack () + +// +// Request structure for VirtioGpuCmdSetScanout. +// +#pragma pack (1) +typedef struct { + VIRTIO_GPU_CONTROL_HEADER Header; + VIRTIO_GPU_RECTANGLE Rectangle; + UINT32 ScanoutId; + UINT32 ResourceId; +} VIRTIO_GPU_SET_SCANOUT; +#pragma pack () + +// +// Request structure for VirtioGpuCmdTransferToHost2d. +// +#pragma pack (1) +typedef struct { + VIRTIO_GPU_CONTROL_HEADER Header; + VIRTIO_GPU_RECTANGLE Rectangle; + UINT64 Offset; + UINT32 ResourceId; + UINT32 Padding; +} VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D; +#pragma pack () + +// +// Request structure for VirtioGpuCmdResourceFlush. +// +#pragma pack (1) +typedef struct { + VIRTIO_GPU_CONTROL_HEADER Header; + VIRTIO_GPU_RECTANGLE Rectangle; + UINT32 ResourceId; + UINT32 Padding; +} VIRTIO_GPU_RESOURCE_FLUSH; +#pragma pack () + +#endif // _VIRTIO_GPU_H_