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https://github.com/RGBCube/serenity
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78e724a899
We already use the term adapter for instances of this class, so let's better represent this class by changing its name to what it really is.
74 lines
2.7 KiB
C++
74 lines
2.7 KiB
C++
/*
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* Copyright (c) 2021, 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/String.h>
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#include <AK/Types.h>
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#include <Kernel/Devices/BlockDevice.h>
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#include <Kernel/Graphics/GenericGraphicsAdapter.h>
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#include <Kernel/Locking/Spinlock.h>
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#include <Kernel/Memory/AnonymousVMObject.h>
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#include <Kernel/PhysicalAddress.h>
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namespace Kernel {
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class FramebufferDevice : public BlockDevice {
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AK_MAKE_ETERNAL
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friend class DeviceManagement;
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public:
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static NonnullRefPtr<FramebufferDevice> create(const GenericGraphicsAdapter&, size_t, PhysicalAddress, size_t, size_t, size_t);
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virtual KResult ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override;
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virtual KResultOr<Memory::Region*> mmap(Process&, OpenFileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
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virtual void deactivate_writes();
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virtual void activate_writes();
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size_t framebuffer_size_in_bytes() const;
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virtual ~FramebufferDevice() {};
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KResult initialize();
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protected:
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FramebufferDevice(const GenericGraphicsAdapter&, size_t);
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NonnullRefPtr<GenericGraphicsAdapter> m_graphics_adapter;
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private:
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FramebufferDevice(const GenericGraphicsAdapter&, size_t, PhysicalAddress, size_t, size_t, size_t);
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// ^File
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virtual StringView class_name() const override { return "FramebufferDevice"sv; }
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virtual bool can_read(const OpenFileDescription&, size_t) const override final { return true; }
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virtual bool can_write(const OpenFileDescription&, size_t) const override final { return true; }
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virtual void start_request(AsyncBlockDeviceRequest& request) override final { request.complete(AsyncDeviceRequest::Failure); }
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virtual KResultOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override { return EINVAL; }
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virtual KResultOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return EINVAL; }
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PhysicalAddress m_framebuffer_address;
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size_t m_framebuffer_pitch { 0 };
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size_t m_framebuffer_width { 0 };
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size_t m_framebuffer_height { 0 };
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Spinlock m_activation_lock;
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RefPtr<Memory::AnonymousVMObject> m_real_framebuffer_vmobject;
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RefPtr<Memory::AnonymousVMObject> m_swapped_framebuffer_vmobject;
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OwnPtr<Memory::Region> m_real_framebuffer_region;
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OwnPtr<Memory::Region> m_swapped_framebuffer_region;
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bool m_graphical_writes_enabled { true };
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RefPtr<Memory::AnonymousVMObject> m_userspace_real_framebuffer_vmobject;
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Memory::Region* m_userspace_framebuffer_region { nullptr };
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size_t m_y_offset { 0 };
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size_t m_output_port_index;
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};
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}
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