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/*
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/NonnullOwnPtr.h>
#include <AK/NonnullRefPtr.h>
#include <AK/NonnullRefPtrVector.h>
#include <AK/Types.h>
#include <Kernel/Graphics/Console/Console.h>
#include <Kernel/Graphics/GraphicsDevice.h>
#include <Kernel/Graphics/VGACompatibleAdapter.h>
#include <Kernel/PCI/Definitions.h>
#include <Kernel/VM/Region.h>
namespace Kernel {
class BochsGraphicsAdapter;
class IntelNativeGraphicsAdapter;
class VGACompatibleAdapter;
class GraphicsManagement {
friend class BochsGraphicsAdapter;
friend class IntelNativeGraphicsAdapter;
friend class VGACompatibleAdapter;
AK_MAKE_ETERNAL
public:
static GraphicsManagement& the();
static bool is_initialized();
bool initialize();
unsigned allocate_minor_device_number() { return m_current_minor_number++; };
GraphicsManagement();
bool framebuffer_devices_allowed() const { return m_framebuffer_devices_allowed; }
bool framebuffer_devices_exist() const;
SpinLock<u8>& main_vga_lock() { return m_main_vga_lock; }
RefPtr<Graphics::Console> console() const { return m_console; }
void deactivate_graphical_mode();
void activate_graphical_mode();
private:
RefPtr<GraphicsDevice> determine_graphics_device(PCI::Address address, PCI::ID id) const;
NonnullRefPtrVector<GraphicsDevice> m_graphics_devices;
NonnullOwnPtr<Region> m_vga_font_region;
RefPtr<Graphics::Console> m_console;
// Note: there could be multiple VGA adapters, but only one can operate in VGA mode
RefPtr<VGACompatibleAdapter> m_vga_adapter;
unsigned m_current_minor_number { 0 };
const bool m_framebuffer_devices_allowed;
SpinLock<u8> m_main_vga_lock;
};
}
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