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b8493bf70f
This list could be updated in runtime if an hotplug event occurs, so we must protect it with a spin lock to avoid corruption of the list.
68 lines
2.2 KiB
C++
68 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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SpinlockProtected<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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