mirror of
https://github.com/RGBCube/serenity
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d49a35df31
Instead of letting the user to determine whether framebuffer devices will be created (which is useless because they are gone by now), let's simplify the flow by allowing the user to choose between full, limited or disabled functionality. The determination happens only once, so, if the user decided to disable graphics support, the initialize method exits immediately. If limited functionality is chosen, then a generic DisplayConnector is initialized with the preset framebuffer resolution, if present, and then the initialize method exits. As a default, the code proceeds to initialize all drivers as usual.
67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
/*
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* Copyright (c) 2021-2022, 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/NonnullOwnPtr.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/NonnullRefPtrVector.h>
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#include <AK/Types.h>
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#include <Kernel/Bus/PCI/Definitions.h>
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#include <Kernel/Graphics/Console/Console.h>
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#include <Kernel/Graphics/DisplayConnector.h>
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#include <Kernel/Graphics/GenericGraphicsAdapter.h>
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#include <Kernel/Graphics/VGA/VGACompatibleAdapter.h>
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#include <Kernel/Graphics/VirtIOGPU/GraphicsAdapter.h>
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#include <Kernel/Memory/Region.h>
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namespace Kernel {
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class GraphicsManagement {
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public:
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static GraphicsManagement& the();
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static bool is_initialized();
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bool initialize();
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unsigned allocate_minor_device_number() { return m_current_minor_number++; };
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GraphicsManagement();
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void attach_new_display_connector(Badge<DisplayConnector>, DisplayConnector&);
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void detach_display_connector(Badge<DisplayConnector>, DisplayConnector&);
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void set_vga_text_mode_cursor(size_t console_width, size_t x, size_t y);
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void disable_vga_text_mode_console_cursor();
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void disable_vga_emulation_access_permanently();
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RefPtr<Graphics::Console> console() const { return m_console; }
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void set_console(Graphics::Console&);
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void deactivate_graphical_mode();
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void activate_graphical_mode();
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private:
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void enable_vga_text_mode_console_cursor();
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bool determine_and_initialize_graphics_device(PCI::DeviceIdentifier const&);
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bool determine_and_initialize_isa_graphics_device();
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NonnullRefPtrVector<GenericGraphicsAdapter> m_graphics_devices;
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RefPtr<Graphics::Console> m_console;
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// Note: This is only used when booting with kernel commandline that includes "graphics_subsystem_mode=limited"
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RefPtr<GenericDisplayConnector> m_preset_resolution_generic_display_connector;
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// Note: there could be multiple VGA adapters, but only one can operate in VGA mode
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RefPtr<VGACompatibleAdapter> m_vga_adapter;
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unsigned m_current_minor_number { 0 };
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IntrusiveList<&DisplayConnector::m_list_node> m_display_connector_nodes;
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RecursiveSpinlock m_main_vga_lock;
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bool m_vga_access_is_disabled { false };
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};
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}
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