mirror of
https://github.com/RGBCube/serenity
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fd6a536c60
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.
111 lines
2.9 KiB
C++
111 lines
2.9 KiB
C++
/*
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* Copyright (c) 2021, Sahan Fernando <sahan.h.fernando@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/DistinctNumeric.h>
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#include <Kernel/Devices/CharacterDevice.h>
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#include <Kernel/Graphics/VirtIOGPU/FramebufferDevice.h>
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#include <Kernel/Graphics/VirtIOGPU/Protocol.h>
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namespace Kernel::Graphics::VirtIOGPU {
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enum class VirGLCommand : u32 {
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NOP = 0,
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CREATE_OBJECT = 1,
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BIND_OBJECT,
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DESTROY_OBJECT,
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SET_VIEWPORT_STATE,
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SET_FRAMEBUFFER_STATE,
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SET_VERTEX_BUFFERS,
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CLEAR,
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DRAW_VBO,
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RESOURCE_INLINE_WRITE,
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SET_SAMPLER_VIEWS,
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SET_INDEX_BUFFER,
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SET_CONSTANT_BUFFER,
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SET_STENCIL_REF,
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SET_BLEND_COLOR,
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SET_SCISSOR_STATE,
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BLIT,
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RESOURCE_COPY_REGION,
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BIND_SAMPLER_STATES,
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BEGIN_QUERY,
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END_QUERY,
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GET_QUERY_RESULT,
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SET_POLYGON_STIPPLE,
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SET_CLIP_STATE,
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SET_SAMPLE_MASK,
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SET_STREAMOUT_TARGETS,
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SET_RENDER_CONDITION,
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SET_UNIFORM_BUFFER,
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SET_SUB_CTX,
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CREATE_SUB_CTX,
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DESTROY_SUB_CTX,
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BIND_SHADER,
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SET_TESS_STATE,
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SET_MIN_SAMPLES,
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SET_SHADER_BUFFERS,
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SET_SHADER_IMAGES,
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MEMORY_BARRIER,
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LAUNCH_GRID,
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SET_FRAMEBUFFER_STATE_NO_ATTACH,
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TEXTURE_BARRIER,
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SET_ATOMIC_BUFFERS,
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SET_DBG_FLAGS,
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GET_QUERY_RESULT_QBO,
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TRANSFER3D,
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END_TRANSFERS,
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COPY_TRANSFER3D,
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SET_TWEAKS,
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CLEAR_TEXTURE,
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PIPE_RESOURCE_CREATE,
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PIPE_RESOURCE_SET_TYPE,
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GET_MEMORY_INFO,
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SEND_STRING_MARKER,
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MAX_COMMANDS
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};
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union ClearType {
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struct {
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u32 depth : 1;
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u32 stencil : 1;
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u32 color0 : 1;
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u32 color1 : 1;
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u32 color2 : 1;
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u32 color3 : 1;
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u32 color4 : 1;
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u32 color5 : 1;
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u32 color6 : 1;
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u32 color7 : 1;
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} flags;
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u32 value;
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};
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class GPU3DDevice : public CharacterDevice {
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public:
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GPU3DDevice() = delete;
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explicit GPU3DDevice(GraphicsAdapter& graphics_adapter);
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virtual bool can_read(const OpenFileDescription&, u64) const override { return true; }
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virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
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virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override { return ENOTSUP; }
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virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return ENOTSUP; }
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virtual StringView class_name() const override { return "virgl3d"; }
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virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override;
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private:
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Kernel::Graphics::VirtIOGPU::GraphicsAdapter& m_graphics_adapter;
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// Context used for kernel operations (e.g. flushing resources to scanout)
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ContextID m_kernel_context_id;
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// Memory management for backing buffers
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OwnPtr<Memory::Region> m_transfer_buffer_region;
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constexpr static size_t NUM_TRANSFER_REGION_PAGES = 256;
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};
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}
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