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3bd0106755
We never supported VGA framebuffers and that folder was a big misleading part of the graphics subsystem. We do support bare-bones VGA text console (80x25), but that only happens to be supported because we can't be 100% sure we can always initialize framebuffer so in the worst scenario we default to plain old VGA console so the user can still use its own machine. Therefore, the only remaining parts of VGA is in the GraphicsManagement code to help driving the VGA text console if needed.
67 lines
2.1 KiB
C++
67 lines
2.1 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/Generic/DisplayConnector.h>
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#include <Kernel/Graphics/GenericGraphicsAdapter.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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void initialize_preset_resolution_generic_display_connector();
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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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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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