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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
174
Kernel/Devices/GPU/DisplayConnector.h
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174
Kernel/Devices/GPU/DisplayConnector.h
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/*
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* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
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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/Types.h>
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#include <Kernel/API/Ioctl.h>
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#include <Kernel/Devices/CharacterDevice.h>
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#include <Kernel/Memory/SharedFramebufferVMObject.h>
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#include <LibEDID/EDID.h>
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namespace Kernel {
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class GraphicsManagement;
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class DisplayConnector : public CharacterDevice {
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friend class GraphicsManagement;
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friend class DeviceManagement;
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public:
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struct ModeSetting {
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size_t horizontal_blanking_start() const
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{
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return horizontal_active;
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}
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size_t horizontal_sync_start() const
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{
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return horizontal_active + horizontal_front_porch_pixels;
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}
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size_t horizontal_sync_end() const
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{
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return horizontal_active + horizontal_front_porch_pixels + horizontal_sync_time_pixels;
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}
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size_t horizontal_total() const
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{
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return horizontal_active + horizontal_blank_pixels;
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}
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size_t vertical_blanking_start() const
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{
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return vertical_active;
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}
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size_t vertical_sync_start() const
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{
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return vertical_active + vertical_front_porch_lines;
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}
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size_t vertical_sync_end() const
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{
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return vertical_active + vertical_front_porch_lines + vertical_sync_time_lines;
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}
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size_t vertical_total() const
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{
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return vertical_active + vertical_blank_lines;
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}
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size_t horizontal_stride; // Note: This is commonly known as "pitch"
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size_t pixel_clock_in_khz;
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size_t horizontal_active;
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size_t horizontal_front_porch_pixels;
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size_t horizontal_sync_time_pixels;
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size_t horizontal_blank_pixels;
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size_t vertical_active;
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size_t vertical_front_porch_lines;
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size_t vertical_sync_time_lines;
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size_t vertical_blank_lines;
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size_t horizontal_offset; // Note: This is commonly known as "x offset"
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size_t vertical_offset; // Note: This is commonly known as "y offset"
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};
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public:
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enum class DisplayMode {
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Graphical,
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Console,
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};
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public:
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virtual ~DisplayConnector() = default;
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virtual bool mutable_mode_setting_capable() const = 0;
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virtual bool double_framebuffering_capable() const = 0;
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virtual bool flush_support() const = 0;
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virtual bool partial_flush_support() const = 0;
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// Note: This can indicate to userland if the underlying hardware requires
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// a defined refresh rate being supplied when modesetting the screen resolution.
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// Paravirtualized hardware don't need such setting and can safely ignore this.
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virtual bool refresh_rate_support() const = 0;
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bool console_mode() const;
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ErrorOr<ByteBuffer> get_edid() const;
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virtual ErrorOr<void> set_mode_setting(ModeSetting const&) = 0;
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virtual ErrorOr<void> set_safe_mode_setting() = 0;
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ModeSetting current_mode_setting() const;
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virtual ErrorOr<void> set_y_offset(size_t y) = 0;
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virtual ErrorOr<void> unblank() = 0;
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void set_display_mode(Badge<GraphicsManagement>, DisplayMode);
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Memory::Region const& framebuffer_region() const { return *m_framebuffer_region; }
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protected:
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void set_edid_bytes(Array<u8, 128> const& edid_bytes, bool might_be_invalid = false);
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DisplayConnector(PhysicalAddress framebuffer_address, size_t framebuffer_resource_size, bool enable_write_combine_optimization);
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DisplayConnector(size_t framebuffer_resource_size, bool enable_write_combine_optimization);
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virtual void enable_console() = 0;
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virtual void disable_console() = 0;
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virtual ErrorOr<void> flush_first_surface() = 0;
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virtual ErrorOr<void> flush_rectangle(size_t buffer_index, FBRect const& rect);
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ErrorOr<void> initialize_edid_for_generic_monitor(Optional<Array<u8, 3>> manufacturer_id_string);
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mutable Spinlock<LockRank::None> m_control_lock {};
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mutable Mutex m_flushing_lock;
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bool m_console_mode { false };
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bool m_vertical_offsetted { false };
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mutable Spinlock<LockRank::None> m_modeset_lock {};
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ModeSetting m_current_mode_setting {};
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Optional<EDID::Parser> m_edid_parser;
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EDID::Parser::RawBytes m_edid_bytes {};
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bool m_edid_valid { false };
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u8* framebuffer_data() { return m_framebuffer_data; }
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private:
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// ^File
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virtual bool is_seekable() const override { return true; }
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virtual bool can_read(OpenFileDescription const&, u64) const final override { return true; }
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virtual bool can_write(OpenFileDescription const&, u64) const final override { return true; }
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virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override final;
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virtual ErrorOr<size_t> write(OpenFileDescription&, u64, UserOrKernelBuffer const&, size_t) override final;
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virtual ErrorOr<NonnullLockRefPtr<Memory::VMObject>> vmobject_for_mmap(Process&, Memory::VirtualRange const&, u64&, bool) override final;
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virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override final;
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virtual StringView class_name() const override final { return "DisplayConnector"sv; }
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DisplayConnector& operator=(DisplayConnector const&) = delete;
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DisplayConnector& operator=(DisplayConnector&&) = delete;
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DisplayConnector(DisplayConnector&&) = delete;
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virtual void will_be_destroyed() override;
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virtual ErrorOr<void> after_inserting() override;
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ErrorOr<void> allocate_framebuffer_resources(size_t rounded_size);
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ErrorOr<bool> ioctl_requires_ownership(unsigned request) const;
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OwnPtr<Memory::Region> m_framebuffer_region;
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OwnPtr<Memory::Region> m_fake_writes_framebuffer_region;
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u8* m_framebuffer_data {};
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bool const m_enable_write_combine_optimization { false };
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bool const m_framebuffer_at_arbitrary_physical_range { false };
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protected:
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Optional<PhysicalAddress> const m_framebuffer_address;
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size_t m_framebuffer_resource_size;
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private:
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LockRefPtr<Memory::SharedFramebufferVMObject> m_shared_framebuffer_vmobject;
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LockWeakPtr<Process> m_responsible_process;
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Spinlock<LockRank::None> m_responsible_process_lock {};
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IntrusiveListNode<DisplayConnector, LockRefPtr<DisplayConnector>> m_list_node;
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};
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}
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