virtiogpu.h

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#ifndef __VIRTIO_GPU_H__
#define __VIRTIO_GPU_H__
 
#include <stdint.h>
#include <Drivers/virtio.h>
 
#define VIRTIO_GPU_FLAG_FENCE (1<<0)
#define VIRTIO_GPU_FLAG_INFO_RING_IDX (1<<1)
 
#define VIRTIO_GPU_CREATE_RESOURCE_2D 0x200
#define VIRTIO_GPU_ATTACH_BACKING 0x201
#define VIRTIO_GPU_TRANSFER_TO_HOST2D 0x202
#define VIRTIO_GPU_FLUSH 0x203
#define VIRTIO_GPU_GET_SCREEN_RSRC_ID 0x204
 
 
#pragma pack(push,1)
struct virtio_gpu_ctrl_hdr {
    uint32_t type;
    uint32_t flags;
    uint64_t fence_id;
    uint32_t ctx_id;
    uint32_t padding;
};
#pragma pack(pop)
 
#pragma pack(push,1)
struct virtio_gpu_resource_create_2d {
    struct virtio_gpu_ctrl_hdr hdr;
    uint32_t resource_id;
    uint32_t format;
    uint32_t width;
    uint32_t height;
};
#pragma pack(pop)
 
#pragma pack(push,1)
struct virtio_gpu_resource_attach_backing {
    struct virtio_gpu_ctrl_hdr hdr;
    uint32_t resource_id;
    uint32_t nr_entries;
    struct {
        uint64_t addr;
        uint32_t length;
        uint32_t padding;
    }entries[1];
};
#pragma pack(pop)
 
 
struct virtio_gpu_rect {
    uint32_t x, y, width, height;
};
 
#pragma pack(push,1)
struct virtio_gpu_set_scanout {
    struct virtio_gpu_ctrl_hdr hdr;
    struct virtio_gpu_rect rect;
    uint32_t scanout_id;
    uint32_t resource_id;
};
#pragma pack(pop)
 
#pragma pack(push,1)
struct virtio_gpu_transfer_to_host_2d {
    struct virtio_gpu_ctrl_hdr hdr;
    struct virtio_gpu_rect rect;
    uint64_t offset;
    uint32_t resource_id;
    uint32_t padding;
};
#pragma pack(pop)
 
 
#pragma pack(push,1)
struct virtio_gpu_resource_flush {
    struct virtio_gpu_ctrl_hdr hdr;
    struct virtio_gpu_rect rect;
    uint32_t resource_id;
    uint32_t padding;
};
#pragma pack(pop)
 
 
#pragma pack(push,1)
struct virtio_gpu_config {
    uint32_t events_read;
    uint32_t events_clear;
    uint32_t num_scanouts;
    uint32_t num_capsets;
};
#pragma pack(pop)
 
#pragma pack(push,1)
struct virtio_gpu_mem_entry {
    uint64_t addr;
    uint32_t length;
    uint32_t padding;
};
#pragma pack(pop)
 
 
enum virtio_gpu_ctrl_type {
    /* 2D commands */
    VIRTIO_GPU_CMD_GET_DISPLAY_INFO = 0x0100,
    VIRTIO_GPU_CMD_RESOURCE_CREATE_2D,
    VIRTIO_GPU_CMD_RESOURCE_UNREF,
    VIRTIO_GPU_CMD_SET_SCANOUT,
    VIRTIO_GPU_CMD_RESOURCE_FLUSH,
    VIRTIO_GPU_CMD_TRANSFER_TO_HOST2D,
    VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING,
    VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING,
    VIRTIO_GPU_CMD_GET_CAPSET_INFO,
    VIRTIO_GPU_CMD_GET_CAPSET,
    VIRTIO_GPU_CMD_GET_EDID,
    VIRTIO_GPU_CMD_RESOURCE_ASSIGN_UUID,
    VIRTIO_GPU_CMD_RESOURCE_CREATE_BLOB,
    VIRTIO_GPU_CMD_SET_SCANOUT_BLOB,
 
    /*3D commands */
    VIRTIO_GPU_CMD_CTX_CREATE = 0x0200,
    VIRTIO_GPU_CMD_CTX_DESTROY,
    VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE,
    VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE,
    VIRTIO_GPU_CMD_RESOURCE_CREATE_3D,
    VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D,
    VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D,
    VIRTIO_GPU_CMD_SUBMIT_3D,
    VIRTIO_GPU_CMD_RESOURCE_MAP_BLOB,
    VIRTIO_GPU_CMD_RESOURCE_UNMAP_BLOB,
 
    /* cursor commands */
    VIRTIO_GPU_CMD_UPDATE_CURSOR = 0x0300,
    VIRTIO_GPU_CMD_MOVE_CURSOR,
 
    /* success responses */
    VIRTIO_GPU_RESP_OK_NODATA = 0x1100,
    VIRTIO_GPU_RESP_OK_DISPLAY_INFO,
    VIRTIO_GPU_RESP_OK_CAPSET_INFO,
    VIRTIO_GPU_RESP_OK_CAPSET,
    VIRTIO_GPU_RESP_OK_EDID,
    VIRTIO_GPU_RESP_OK_RESOURCE_UUID,
    VIRTIO_GPU_RESP_OK_MAP_INFO,
 
    /* error responses */
    VIRTIO_GPU_RESP_ERR_UNSPEC = 0x1200,
    VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY,
    VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID,
    VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID,
    VIRTIO_GPU_RESP_ERR_INVALID_CONTEXT_ID,
    VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER,
};
 
enum virtio_gpu_formats {
    VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM = 1,
    VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM = 2,
    VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM = 3,
    VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM = 4,
 
    VIRTIO_GPU_FORMAT_R8G8B8A8_UNORM = 67,
    VIRTIO_GPU_FORMAT_X8B8G8R8_UNORM = 68,
 
    VIRTIO_GPU_FORMAT_A8B8G8R8_UNORM = 121,
    VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM = 134,
};
extern bool gpu_is_virgl_supported();
 
extern bool gpu_is_edid_supported();
 
 
extern void gpu_execute_command(VirtioCommonCfg* cfg, void* cmd, size_t len);
 
extern int gpu_allocate_resource_id();
 
extern void gpu_attach_back_cmd(VirtioCommonCfg* cfg, void* req, uint32_t len1, void* req2, uint32_t len2);
 
extern VirtioCommonCfg* gpu_get_config_pointer();
 
 
 
 
#endif