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/*
* Copyright (c) 2021, Sahan Fernando <sahan.h.fernando@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/BinaryBufferWriter.h>
#include <AK/DistinctNumeric.h>
#include <Kernel/Devices/CharacterDevice.h>
#include <Kernel/Graphics/Console/Console.h>
#include <Kernel/Graphics/DisplayConnector.h>
#include <Kernel/Graphics/VirtIOGPU/GraphicsAdapter.h>
#include <Kernel/Graphics/VirtIOGPU/Protocol.h>
#include <Kernel/Memory/Region.h>
#include <LibEDID/EDID.h>
namespace Kernel::Graphics::VirtIOGPU {
class Console;
}
namespace Kernel {
class VirtIOGraphicsAdapter;
class VirtIODisplayConnector final : public DisplayConnector {
friend class Graphics::VirtIOGPU::Console;
friend class DeviceManagement;
public:
static NonnullLockRefPtr<VirtIODisplayConnector> must_create(VirtIOGraphicsAdapter& graphics_adapter, Graphics::VirtIOGPU::ScanoutID scanout_id);
void set_edid_bytes(Badge<VirtIOGraphicsAdapter>, Array<u8, 128> const& edid_bytes);
void set_safe_mode_setting_after_initialization(Badge<VirtIOGraphicsAdapter>);
Graphics::VirtIOGPU::ScanoutID scanout_id() const { return m_scanout_id; }
Graphics::VirtIOGPU::Protocol::DisplayInfoResponse::Display display_information(Badge<VirtIOGraphicsAdapter>) const;
void initialize_console(Badge<VirtIOGraphicsAdapter>);
private:
virtual bool mutable_mode_setting_capable() const override { return true; }
virtual bool double_framebuffering_capable() const override { return false; }
virtual bool partial_flush_support() const override { return true; }
virtual ErrorOr<void> set_mode_setting(ModeSetting const&) override;
virtual ErrorOr<void> set_safe_mode_setting() override;
virtual ErrorOr<void> set_y_offset(size_t y) override;
virtual ErrorOr<void> unblank() override;
// Note: VirtIO hardware requires a constant refresh to keep the screen in sync to the user.
virtual bool flush_support() const override { return true; }
// Note: Paravirtualized hardware doesn't require a defined refresh rate for modesetting.
virtual bool refresh_rate_support() const override { return false; }
virtual ErrorOr<void> flush_first_surface() override;
virtual ErrorOr<void> flush_rectangle(size_t buffer_index, FBRect const& rect) override;
virtual void enable_console() override;
virtual void disable_console() override;
static bool is_valid_buffer_index(size_t buffer_index)
{
return buffer_index == 0 || buffer_index == 1;
}
private:
VirtIODisplayConnector(VirtIOGraphicsAdapter& graphics_adapter, Graphics::VirtIOGPU::ScanoutID scanout_id);
ErrorOr<void> flush_displayed_image(Graphics::VirtIOGPU::Protocol::Rect const& dirty_rect, bool main_buffer);
void set_dirty_displayed_rect(Graphics::VirtIOGPU::Protocol::Rect const& dirty_rect, bool main_buffer);
void clear_to_black();
// Member data
// Context used for kernel operations (e.g. flushing resources to scanout)
Graphics::VirtIOGPU::ContextID m_kernel_context_id;
NonnullLockRefPtr<VirtIOGraphicsAdapter> m_graphics_adapter;
LockRefPtr<Graphics::VirtIOGPU::Console> m_console;
Graphics::VirtIOGPU::Protocol::DisplayInfoResponse::Display m_display_info {};
Graphics::VirtIOGPU::ScanoutID m_scanout_id;
constexpr static size_t NUM_TRANSFER_REGION_PAGES = 256;
};
}
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