stream-servers/virtgpu_gfxstream_protocol.h

// Copyright 2022 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef VIRTGPU_GFXSTREAM_PROTOCOL_H
#define VIRTGPU_GFXSTREAM_PROTOCOL_H

#include <stdint.h>

namespace gfxstream {

// Address Space Graphics contexts
#define GFXSTREAM_CONTEXT_CREATE                0x1001
#define GFXSTREAM_CONTEXT_PING                  0x1002
#define GFXSTREAM_CONTEXT_PING_WITH_RESPONSE    0x1003

// Native Sync FD
#define GFXSTREAM_CREATE_EXPORT_SYNC            0x9000
#define GFXSTREAM_CREATE_IMPORT_SYNC            0x9001

// Vulkan Sync
#define GFXSTREAM_CREATE_EXPORT_SYNC_VK         0xa000
#define GFXSTREAM_CREATE_IMPORT_SYNC_VK         0xa001
#define GFXSTREAM_CREATE_QSRI_EXPORT_VK         0xa002

// clang-format off
// A placeholder command to ensure virtio-gpu completes
#define GFXSTREAM_PLACEHOLDER_COMMAND_VK        0xf002
// clang-format on

struct gfxstreamHeader {
    uint32_t opCode;
};

struct gfxstreamContextCreate {
    struct gfxstreamHeader hdr;
    uint32_t resourceId;
};

struct gfxstreamContextPing {
    struct gfxstreamHeader hdr;
    uint32_t resourceId;
};

struct gfxstreamCreateExportSync {
    struct gfxstreamHeader hdr;
    uint32_t syncHandleLo;
    uint32_t syncHandleHi;
};

struct gfxstreamCreateExportSyncVK {
    struct gfxstreamHeader hdr;
    uint32_t deviceHandleLo;
    uint32_t deviceHandleHi;
    uint32_t fenceHandleLo;
    uint32_t fenceHandleHi;
};

struct gfxstreamCreateQSRIExportVK {
    struct gfxstreamHeader hdr;
    uint32_t imageHandleLo;
    uint32_t imageHandleHi;
};

struct gfxstreamPlaceholderCommandVk {
    struct gfxstreamHeader hdr;
    uint32_t pad;
    uint32_t padding;
};

struct gfxstreamCapset {
    uint32_t protocolVersion;

    // ASG Ring Parameters
    uint32_t ringSize;
    uint32_t bufferSize;

    uint32_t colorBufferMemoryIndex;
    uint32_t deferredMapping;
    uint32_t blobAlignment;
    uint32_t padding[15];
};

}  // namespace gfxstream

#endif