UefiCpuPkg: Move AsmRelocateApLoopStart from Mpfuncs.nasm to AmdSev.nasm

[mirror_edk2.git] / OvmfPkg / Include / IndustryStandard / VirtioGpu.h

/** @file\r
\r
  Virtio GPU Device specific type and macro definitions.\r
\r
  At the time of this writing, the Virtio 1.0 specification has not\r
  incorporated the GPU device yet. The following work-in-progress specification\r
  is used as basis for the implementation:\r
\r
  - https://lists.oasis-open.org/archives/virtio-dev/201605/msg00002.html\r
  - https://www.kraxel.org/virtio/\r
\r
  This header file is minimal, and only defines the types and macros that are\r
  necessary for the OvmfPkg implementation.\r
\r
  Copyright (C) 2016, Red Hat, Inc.\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#ifndef _VIRTIO_GPU_H_\r
#define _VIRTIO_GPU_H_\r
\r
#include <IndustryStandard/Virtio.h>\r
\r
//\r
// Queue number for sending control commands.\r
//\r
#define VIRTIO_GPU_CONTROL_QUEUE  0\r
\r
//\r
// Command and response types.\r
//\r
typedef enum {\r
  //\r
  // Commands related to mode setup:\r
  //\r
  // - create/release a host-side 2D resource,\r
  //\r
  VirtioGpuCmdGetDisplayInfo   = 0x0100,\r
  VirtioGpuCmdResourceCreate2d = 0x0101,\r
  VirtioGpuCmdResourceUnref    = 0x0102,\r
  //\r
  // - attach/detach guest RAM to/from a host-side 2D resource,\r
  //\r
  VirtioGpuCmdResourceAttachBacking = 0x0106,\r
  VirtioGpuCmdResourceDetachBacking = 0x0107,\r
  //\r
  // - assign/unassign a host-side 2D resource to/from a scanout ("head").\r
  //\r
  VirtioGpuCmdSetScanout = 0x0103,\r
\r
  //\r
  // Commands related to drawing:\r
  //\r
  // - transfer a guest RAM update to the host-side 2D resource (does not imply\r
  //   host display refresh),\r
  //\r
  VirtioGpuCmdTransferToHost2d = 0x0105,\r
  //\r
  // - trigger a host display refresh from the 2D resource.\r
  //\r
  VirtioGpuCmdResourceFlush = 0x0104,\r
\r
  //\r
  // Success code for all of the above commands.\r
  //\r
  VirtioGpuRespOkNodata      = 0x1100,\r
  VirtioGpuRespOkDisplayInfo = 0x1101,\r
} VIRTIO_GPU_CONTROL_TYPE;\r
\r
//\r
// Common request/response header.\r
//\r
#define VIRTIO_GPU_FLAG_FENCE  BIT0\r
\r
#pragma pack (1)\r
typedef struct {\r
  //\r
  // The guest sets Type to VirtioGpuCmd* in the requests. The host sets Type\r
  // to VirtioGpuResp* in the responses.\r
  //\r
  UINT32    Type;\r
\r
  //\r
  // Fencing forces the host to complete the command before producing a\r
  // response.\r
  //\r
  UINT32    Flags;\r
  UINT64    FenceId;\r
\r
  //\r
  // Unused.\r
  //\r
  UINT32    CtxId;\r
  UINT32    Padding;\r
} VIRTIO_GPU_CONTROL_HEADER;\r
#pragma pack ()\r
\r
//\r
// Rectangle structure used by several operations.\r
//\r
#pragma pack (1)\r
typedef struct {\r
  UINT32    X;\r
  UINT32    Y;\r
  UINT32    Width;\r
  UINT32    Height;\r
} VIRTIO_GPU_RECTANGLE;\r
#pragma pack ()\r
\r
//\r
// Request structure for VirtioGpuCmdResourceCreate2d.\r
//\r
typedef enum {\r
  //\r
  // 32-bit depth, BGRX component order, X component ignored.\r
  //\r
  VirtioGpuFormatB8G8R8X8Unorm = 2,\r
} VIRTIO_GPU_FORMATS;\r
\r
#pragma pack (1)\r
typedef struct {\r
  VIRTIO_GPU_CONTROL_HEADER    Header;\r
  UINT32                       ResourceId; // note: 0 is invalid\r
  UINT32                       Format;     // from VIRTIO_GPU_FORMATS\r
  UINT32                       Width;\r
  UINT32                       Height;\r
} VIRTIO_GPU_RESOURCE_CREATE_2D;\r
#pragma pack ()\r
\r
//\r
// Request structure for VirtioGpuCmdResourceUnref.\r
//\r
#pragma pack (1)\r
typedef struct {\r
  VIRTIO_GPU_CONTROL_HEADER    Header;\r
  UINT32                       ResourceId;\r
  UINT32                       Padding;\r
} VIRTIO_GPU_RESOURCE_UNREF;\r
#pragma pack ()\r
\r
//\r
// Request structure for VirtioGpuCmdResourceAttachBacking.\r
//\r
// The spec allows for a scatter-gather list, but for simplicity we hard-code a\r
// single guest buffer.\r
//\r
#pragma pack (1)\r
typedef struct {\r
  UINT64    Addr;\r
  UINT32    Length;\r
  UINT32    Padding;\r
} VIRTIO_GPU_MEM_ENTRY;\r
\r
typedef struct {\r
  VIRTIO_GPU_CONTROL_HEADER    Header;\r
  UINT32                       ResourceId;\r
  UINT32                       NrEntries; // number of entries: constant 1\r
  VIRTIO_GPU_MEM_ENTRY         Entry;\r
} VIRTIO_GPU_RESOURCE_ATTACH_BACKING;\r
#pragma pack ()\r
\r
//\r
// Request structure for VirtioGpuCmdResourceDetachBacking.\r
//\r
#pragma pack (1)\r
typedef struct {\r
  VIRTIO_GPU_CONTROL_HEADER    Header;\r
  UINT32                       ResourceId;\r
  UINT32                       Padding;\r
} VIRTIO_GPU_RESOURCE_DETACH_BACKING;\r
#pragma pack ()\r
\r
//\r
// Request structure for VirtioGpuCmdSetScanout.\r
//\r
#pragma pack (1)\r
typedef struct {\r
  VIRTIO_GPU_CONTROL_HEADER    Header;\r
  VIRTIO_GPU_RECTANGLE         Rectangle;\r
  UINT32                       ScanoutId;\r
  UINT32                       ResourceId;\r
} VIRTIO_GPU_SET_SCANOUT;\r
#pragma pack ()\r
\r
//\r
// Request structure for VirtioGpuCmdTransferToHost2d.\r
//\r
#pragma pack (1)\r
typedef struct {\r
  VIRTIO_GPU_CONTROL_HEADER    Header;\r
  VIRTIO_GPU_RECTANGLE         Rectangle;\r
  UINT64                       Offset;\r
  UINT32                       ResourceId;\r
  UINT32                       Padding;\r
}  VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D;\r
#pragma pack ()\r
\r
//\r
// Request structure for VirtioGpuCmdResourceFlush.\r
//\r
#pragma pack (1)\r
typedef struct {\r
  VIRTIO_GPU_CONTROL_HEADER    Header;\r
  VIRTIO_GPU_RECTANGLE         Rectangle;\r
  UINT32                       ResourceId;\r
  UINT32                       Padding;\r
} VIRTIO_GPU_RESOURCE_FLUSH;\r
#pragma pack ()\r
\r
//\r
// Response structure for VirtioGpuCmdGetDisplayInfo\r
//\r
#define VIRTIO_GPU_MAX_SCANOUTS  16\r
#pragma pack (1)\r
typedef struct {\r
  VIRTIO_GPU_CONTROL_HEADER    Header;\r
  struct {\r
    VIRTIO_GPU_RECTANGLE    Rectangle;\r
    UINT32                  Enabled;\r
    UINT32                  Flags;\r
  } Pmodes[VIRTIO_GPU_MAX_SCANOUTS];\r
} VIRTIO_GPU_RESP_DISPLAY_INFO;\r
#pragma pack ()\r
\r
#endif // _VIRTIO_GPU_H_\r