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Kernel: Implement basic VirGL device

This commit flips VirtIOGPU back to using a Mutex for its operation
lock (instead of a spinlock). This is necessary for avoiding a few
system hangs when queuing actions on the driver from multiple
processes, which becomes much more of an issue when using VirGL from
multiple userspace process.

This does result in a few code paths where we inevitably have to grab
a mutex from inside a spinlock, the only way to fix both issues is to
move to issuing asynchronous virtio gpu commands.
This commit is contained in:
Sahan Fernando 2022-02-13 16:45:30 +11:00 committed by Ali Mohammad Pur
parent 966989afe8
commit fd6a536c60
7 changed files with 503 additions and 8 deletions

View file

@ -11,10 +11,28 @@
#define VIRTIO_GPU_MAX_SCANOUTS 16
namespace Kernel::Graphics::VirtIOGPU {
TYPEDEF_DISTINCT_ORDERED_ID(u32, ContextID);
TYPEDEF_DISTINCT_ORDERED_ID(u32, ResourceID);
TYPEDEF_DISTINCT_ORDERED_ID(u32, ScanoutID);
};
#define VREND_MAX_CTX 64
#define VIRGL_BIND_DEPTH_STENCIL (1 << 0)
#define VIRGL_BIND_RENDER_TARGET (1 << 1)
#define VIRGL_BIND_SAMPLER_VIEW (1 << 3)
#define VIRGL_BIND_VERTEX_BUFFER (1 << 4)
#define VIRGL_BIND_INDEX_BUFFER (1 << 5)
#define VIRGL_BIND_CONSTANT_BUFFER (1 << 6)
#define VIRGL_BIND_DISPLAY_TARGET (1 << 7)
#define VIRGL_BIND_COMMAND_ARGS (1 << 8)
#define VIRGL_BIND_STREAM_OUTPUT (1 << 11)
#define VIRGL_BIND_SHADER_BUFFER (1 << 14)
#define VIRGL_BIND_QUERY_BUFFER (1 << 15)
#define VIRGL_BIND_CURSOR (1 << 16)
#define VIRGL_BIND_CUSTOM (1 << 17)
#define VIRGL_BIND_SCANOUT (1 << 18)
namespace Kernel::Graphics::VirtIOGPU::Protocol {
// Specification equivalent: enum virtio_gpu_ctrl_type
@ -32,6 +50,18 @@ enum class CommandType : u32 {
VIRTIO_GPU_CMD_GET_CAPSET,
VIRTIO_GPU_CMD_GET_EDID,
/* 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,
@ -52,6 +82,54 @@ enum class CommandType : u32 {
VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER,
};
enum class ObjectType : u32 {
NONE,
BLEND,
RASTERIZER,
DSA,
SHADER,
VERTEX_ELEMENTS,
SAMPLER_VIEW,
SAMPLER_STATE,
SURFACE,
QUERY,
STREAMOUT_TARGET,
MSAA_SURFACE,
MAX_OBJECTS,
};
enum class PipeTextureTarget : u32 {
BUFFER = 0,
TEXTURE_1D,
TEXTURE_2D,
TEXTURE_3D,
TEXTURE_CUBE,
TEXTURE_RECT,
TEXTURE_1D_ARRAY,
TEXTURE_2D_ARRAY,
TEXTURE_CUBE_ARRAY,
MAX
};
enum class PipePrimitiveTypes : u32 {
POINTS = 0,
LINES,
LINE_LOOP,
LINE_STRIP,
TRIANGLES,
TRIANGLE_STRIP,
TRIANGLE_FAN,
QUADS,
QUAD_STRIP,
POLYGON,
LINES_ADJACENCY,
LINE_STRIP_ADJACENCY,
TRIANGLES_ADJACENCY,
TRIANGLE_STRIP_ADJACENCY,
PATCHES,
MAX
};
// Specification equivalent: struct virtio_gpu_ctrl_hdr
struct ControlHeader {
u32 type;
@ -103,6 +181,23 @@ struct ResourceCreate2D {
u32 height;
};
// Specification equivalent: struct virtio_gpu_resource_create_3d
struct ResourceCreate3D {
ControlHeader header;
u32 resource_id;
u32 target;
u32 format;
u32 bind;
u32 width;
u32 height;
u32 depth;
u32 array_size;
u32 last_level;
u32 nr_samples;
u32 flags;
u32 padding;
};
// Specification equivalent: struct virtio_gpu_resource_unref
struct ResourceUnref {
ControlHeader header;
@ -171,4 +266,68 @@ struct GetEDIDResponse {
u8 edid[1024];
};
// No equivalent in specification
struct ContextCreate {
ControlHeader header;
u32 name_length;
u32 padding;
AK::Array<char, 64> debug_name;
};
static_assert(sizeof(ContextCreate::debug_name) == 64);
// No equivalent in specification
struct ContextAttachResource {
ControlHeader header;
u32 resource_id;
u32 padding;
};
// No equivalent in specification
struct CommandSubmit {
ControlHeader header;
u32 size;
u32 padding;
};
namespace Gallium {
enum class PipeTextureTarget : u32 {
BUFFER,
TEXTURE_1D,
TEXTURE_2D,
TEXTURE_3D,
TEXTURE_CUBE,
TEXTURE_RECT,
TEXTURE_1D_ARRAY,
TEXTURE_2D_ARRAY,
TEXTURE_CUBE_ARRAY,
MAX_TEXTURE_TYPES,
};
enum class ShaderType : u32 {
SHADER_VERTEX = 0,
SHADER_FRAGMENT,
SHADER_GEOMETRY,
SHADER_TESS_CTRL,
SHADER_TESS_EVAL,
SHADER_COMPUTE,
SHADER_TYPES
};
}
struct Resource3DSpecification {
Gallium::PipeTextureTarget target;
u32 format;
u32 bind;
u32 width;
u32 height;
u32 depth;
u32 array_size;
u32 last_level;
u32 nr_samples;
u32 flags;
};
}