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Kernel: Move all Graphics-related code into Devices/GPU directory
Like the HID, Audio and Storage subsystem, the Graphics subsystem (which handles GPUs technically) exposes unix device files (typically in /dev). To ensure consistency across the repository, move all related files to a new directory under Kernel/Devices called "GPU". Also remove the redundant "GPU" word from the VirtIO driver directory, and the word "Graphics" from GraphicsManagement.{h,cpp} filenames.
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69 changed files with 167 additions and 167 deletions
125
Kernel/Devices/GPU/VirtIO/GraphicsAdapter.h
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125
Kernel/Devices/GPU/VirtIO/GraphicsAdapter.h
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/*
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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/BinaryBufferWriter.h>
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#include <AK/DistinctNumeric.h>
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#include <Kernel/Bus/VirtIO/Device.h>
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#include <Kernel/Bus/VirtIO/Queue.h>
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#include <Kernel/Devices/GPU/GenericGraphicsAdapter.h>
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#include <Kernel/Devices/GPU/VirtIO/Protocol.h>
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namespace Kernel {
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#define VIRTIO_GPU_F_VIRGL (1 << 0)
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#define VIRTIO_GPU_F_EDID (1 << 1)
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#define VIRTIO_GPU_FLAG_FENCE (1 << 0)
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#define CONTROLQ 0
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#define CURSORQ 1
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#define MAX_VIRTIOGPU_RESOLUTION_WIDTH 3840
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#define MAX_VIRTIOGPU_RESOLUTION_HEIGHT 2160
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#define VIRTIO_GPU_EVENT_DISPLAY (1 << 0)
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class VirtIODisplayConnector;
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class VirtIOGPU3DDevice;
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class VirtIOGraphicsAdapter final
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: public GenericGraphicsAdapter
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, public VirtIO::Device {
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friend class VirtIODisplayConnector;
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friend class VirtIOGPU3DDevice;
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public:
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static ErrorOr<bool> probe(PCI::DeviceIdentifier const&);
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static ErrorOr<NonnullLockRefPtr<GenericGraphicsAdapter>> create(PCI::DeviceIdentifier const&);
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virtual ErrorOr<void> initialize_virtio_resources() override;
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virtual StringView device_name() const override { return "VirtIOGraphicsAdapter"sv; }
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ErrorOr<void> mode_set_resolution(Badge<VirtIODisplayConnector>, VirtIODisplayConnector&, size_t width, size_t height);
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void set_dirty_displayed_rect(Badge<VirtIODisplayConnector>, VirtIODisplayConnector&, Graphics::VirtIOGPU::Protocol::Rect const& dirty_rect, bool main_buffer);
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ErrorOr<void> flush_displayed_image(Badge<VirtIODisplayConnector>, VirtIODisplayConnector&, Graphics::VirtIOGPU::Protocol::Rect const& dirty_rect, bool main_buffer);
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ErrorOr<void> transfer_framebuffer_data_to_host(Badge<VirtIODisplayConnector>, VirtIODisplayConnector&, Graphics::VirtIOGPU::Protocol::Rect const& rect, bool main_buffer);
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private:
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ErrorOr<void> attach_physical_range_to_framebuffer(VirtIODisplayConnector& connector, bool main_buffer, size_t framebuffer_offset, size_t framebuffer_size);
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ErrorOr<void> initialize_3d_device();
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ErrorOr<void> flush_dirty_rectangle(Graphics::VirtIOGPU::ScanoutID, Graphics::VirtIOGPU::ResourceID, Graphics::VirtIOGPU::Protocol::Rect const& dirty_rect);
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struct Scanout {
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struct PhysicalBuffer {
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size_t framebuffer_offset { 0 };
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Graphics::VirtIOGPU::Protocol::Rect dirty_rect {};
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Graphics::VirtIOGPU::ResourceID resource_id { 0 };
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};
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LockRefPtr<VirtIODisplayConnector> display_connector;
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PhysicalBuffer main_buffer;
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PhysicalBuffer back_buffer;
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};
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VirtIOGraphicsAdapter(PCI::DeviceIdentifier const&, Bitmap&& active_context_ids, NonnullOwnPtr<Memory::Region> scratch_space_region);
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ErrorOr<void> initialize_adapter();
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virtual bool handle_device_config_change() override;
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virtual void handle_queue_update(u16 queue_index) override;
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u32 get_pending_events();
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void clear_pending_events(u32 event_bitmask);
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// 2D framebuffer stuff
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static ErrorOr<FlatPtr> calculate_framebuffer_size(size_t width, size_t height)
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{
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// VirtIO resources can only map on page boundaries!
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return Memory::page_round_up(sizeof(u32) * width * height);
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}
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// 3D Command stuff
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ErrorOr<Graphics::VirtIOGPU::ContextID> create_context();
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ErrorOr<void> attach_resource_to_context(Graphics::VirtIOGPU::ResourceID resource_id, Graphics::VirtIOGPU::ContextID context_id);
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ErrorOr<void> submit_command_buffer(Graphics::VirtIOGPU::ContextID, Function<size_t(Bytes)> buffer_writer);
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Graphics::VirtIOGPU::Protocol::TextureFormat get_framebuffer_format() const { return Graphics::VirtIOGPU::Protocol::TextureFormat::VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM; }
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auto& operation_lock() { return m_operation_lock; }
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Graphics::VirtIOGPU::ResourceID allocate_resource_id();
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PhysicalAddress start_of_scratch_space() const { return m_scratch_space->physical_page(0)->paddr(); }
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AK::BinaryBufferWriter create_scratchspace_writer()
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{
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return { Bytes(m_scratch_space->vaddr().as_ptr(), m_scratch_space->size()) };
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}
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ErrorOr<void> synchronous_virtio_gpu_command(size_t microseconds_timeout, PhysicalAddress buffer_start, size_t request_size, size_t response_size);
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ErrorOr<Graphics::VirtIOGPU::ResourceID> create_2d_resource(Graphics::VirtIOGPU::Protocol::Rect rect);
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ErrorOr<Graphics::VirtIOGPU::ResourceID> create_3d_resource(Graphics::VirtIOGPU::Protocol::Resource3DSpecification const& resource_3d_specification);
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ErrorOr<void> delete_resource(Graphics::VirtIOGPU::ResourceID resource_id);
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ErrorOr<void> ensure_backing_storage(Graphics::VirtIOGPU::ResourceID resource_id, Memory::Region const& region, size_t buffer_offset, size_t buffer_length);
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ErrorOr<void> detach_backing_storage(Graphics::VirtIOGPU::ResourceID resource_id);
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ErrorOr<void> set_scanout_resource(Graphics::VirtIOGPU::ScanoutID scanout, Graphics::VirtIOGPU::ResourceID resource_id, Graphics::VirtIOGPU::Protocol::Rect rect);
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ErrorOr<void> transfer_framebuffer_data_to_host(Graphics::VirtIOGPU::ScanoutID scanout, Graphics::VirtIOGPU::ResourceID resource_id, Graphics::VirtIOGPU::Protocol::Rect const& rect);
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ErrorOr<void> flush_displayed_image(Graphics::VirtIOGPU::ResourceID resource_id, Graphics::VirtIOGPU::Protocol::Rect const& dirty_rect);
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ErrorOr<void> query_and_set_edid(u32 scanout_id, VirtIODisplayConnector& display_connector);
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size_t m_num_scanouts { 0 };
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Scanout m_scanouts[VIRTIO_GPU_MAX_SCANOUTS];
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VirtIO::Configuration const* m_device_configuration { nullptr };
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// Note: Resource ID 0 is invalid, and we must not allocate 0 as the first resource ID.
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Atomic<u32> m_resource_id_counter { 1 };
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SpinlockProtected<Bitmap, LockRank::None> m_active_context_ids {};
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LockRefPtr<VirtIOGPU3DDevice> m_3d_device;
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bool m_has_virgl_support { false };
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Spinlock<LockRank::None> m_operation_lock {};
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NonnullOwnPtr<Memory::Region> m_scratch_space;
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};
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}
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