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053a832fac
We use a switch-case statements to ensure we try to find the best suitable driver for a specific graphics card. In case we don't find such, we use the default statement to initialize the graphics card as a generic VGA adapter, if the adapter is VGA compatible. If we couldn't initialize the driver, we don't touch this adapter anymore. Also, GraphicsDevice should not be tied to a PCI::Address member, as it can be theortically be used with other buses (e.g. ISA cards).
64 lines
1.9 KiB
C++
64 lines
1.9 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/GraphicsDevice.h>
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#include <Kernel/Graphics/VGACompatibleAdapter.h>
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#include <Kernel/Graphics/VirtIOGPU/VirtIOGraphicsAdapter.h>
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#include <Kernel/VM/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::VirtIOGraphicsAdapter;
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AK_MAKE_ETERNAL
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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_allowed() const { return m_framebuffer_devices_allowed; }
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bool framebuffer_devices_exist() const;
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SpinLock<u8>& 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(const PCI::Address& address, PCI::ID id);
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NonnullRefPtrVector<GraphicsDevice> m_graphics_devices;
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NonnullOwnPtr<Region> m_vga_font_region;
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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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const bool m_framebuffer_devices_allowed;
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SpinLock<u8> m_main_vga_lock;
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};
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}
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