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https://github.com/SerenityOS/serenity
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48f3d762af
The new VGAIOArbiter class is now responsible to conduct x86-specific instructions to control VGA hardware from the old ISA ports. This allows us to ensure the GraphicsManagement code doesn't use x86-specific code, thus allowing it to be compiled within non-x86 kernel builds.
74 lines
2.3 KiB
C++
74 lines
2.3 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/Platform.h>
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#include <AK/Types.h>
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#if ARCH(I386) || ARCH(X86_64)
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# include <Kernel/Arch/x86/VGA/IOArbiter.h>
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#endif
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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/Library/NonnullLockRefPtr.h>
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#include <Kernel/Library/NonnullLockRefPtrVector.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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LockRefPtr<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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NonnullLockRefPtrVector<GenericGraphicsAdapter> m_graphics_devices;
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LockRefPtr<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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LockRefPtr<GenericDisplayConnector> m_preset_resolution_generic_display_connector;
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LockRefPtr<DisplayConnector> m_platform_board_specific_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 { LockRank::None };
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#if ARCH(I386) || ARCH(X86_64)
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OwnPtr<VGAIOArbiter> m_vga_arbiter;
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#endif
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};
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}
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