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785c10fda9
This allows forcing the use of only the framebuffer set up by the bootloader and skips instantiating devices for any other graphics cards that may be present.
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
/*
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* Copyright (c) 2021, 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/GenericGraphicsAdapter.h>
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#include <Kernel/Graphics/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 BochsGraphicsAdapter;
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class IntelNativeGraphicsAdapter;
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class VGACompatibleAdapter;
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class GraphicsManagement {
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friend class BochsGraphicsAdapter;
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friend class IntelNativeGraphicsAdapter;
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friend class VGACompatibleAdapter;
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friend class Graphics::VirtIOGPU::GraphicsAdapter;
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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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bool framebuffer_devices_console_only() const;
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bool framebuffer_devices_use_bootloader_framebuffer() const;
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bool framebuffer_devices_exist() const;
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Spinlock& main_vga_lock() { return m_main_vga_lock; }
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RefPtr<Graphics::Console> console() const { return m_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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bool determine_and_initialize_graphics_device(PCI::DeviceIdentifier const&);
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NonnullRefPtrVector<GenericGraphicsAdapter> m_graphics_devices;
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RefPtr<Graphics::Console> m_console;
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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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Spinlock m_main_vga_lock;
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};
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}
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