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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/Types.h>
#include <Kernel/Graphics/GenericFramebufferDevice.h>
#include <Kernel/Graphics/GenericGraphicsAdapter.h>
#include <Kernel/Locking/Spinlock.h>
#include <Kernel/Memory/AnonymousVMObject.h>
#include <Kernel/PhysicalAddress.h>
namespace Kernel {
class FramebufferDevice final : public GenericFramebufferDevice {
friend class DeviceManagement;
public:
static NonnullRefPtr<FramebufferDevice> create(const GenericGraphicsAdapter&, PhysicalAddress, size_t, size_t, size_t);
virtual ErrorOr<Memory::Region*> mmap(Process&, OpenFileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
virtual void deactivate_writes() override;
virtual void activate_writes() override;
virtual ErrorOr<void> try_to_initialize() override;
virtual bool multihead_support() const override { return false; }
virtual bool flushing_support() const override { return false; }
virtual bool partial_flushing_support() const override { return false; }
virtual size_t heads_count() const override { return 1; }
virtual ErrorOr<size_t> buffer_length(size_t head) const override;
virtual ErrorOr<size_t> pitch(size_t head) const override;
virtual ErrorOr<size_t> height(size_t head) const override;
virtual ErrorOr<size_t> width(size_t head) const override;
virtual ErrorOr<size_t> vertical_offset(size_t head) const override;
virtual ErrorOr<bool> vertical_offsetted(size_t head) const override;
virtual ErrorOr<ByteBuffer> get_edid(size_t head) const override;
void enable_write_combine(bool write_combine) { m_write_combine = write_combine; }
private:
virtual ErrorOr<void> set_head_resolution(size_t head, size_t width, size_t height, size_t pitch) override;
virtual ErrorOr<void> set_head_buffer(size_t head, bool second_buffer) override;
virtual ErrorOr<void> flush_head_buffer(size_t head) override;
virtual ErrorOr<void> flush_rectangle(size_t head, FBRect const&) override;
FramebufferDevice(const GenericGraphicsAdapter&, PhysicalAddress, size_t, size_t, size_t);
PhysicalAddress m_framebuffer_address;
size_t m_framebuffer_pitch { 0 };
size_t m_framebuffer_width { 0 };
size_t m_framebuffer_height { 0 };
Spinlock m_activation_lock;
mutable Spinlock m_buffer_offset_lock;
RefPtr<Memory::AnonymousVMObject> m_real_framebuffer_vmobject;
RefPtr<Memory::AnonymousVMObject> m_swapped_framebuffer_vmobject;
OwnPtr<Memory::Region> m_real_framebuffer_region;
OwnPtr<Memory::Region> m_swapped_framebuffer_region;
bool m_graphical_writes_enabled { true };
bool m_write_combine { true };
RefPtr<Memory::AnonymousVMObject> m_userspace_real_framebuffer_vmobject;
Memory::Region* m_userspace_framebuffer_region { nullptr };
size_t m_y_offset { 0 };
};
}
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