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bb58a4d943
The default template argument is only used in one place, and it looks like it was probably just an oversight. The rest of the Kernel code all uses u8 as the type. So lets make that the default and remove the unused template argument, as there doesn't seem to be a reason to allow the size to be customizable.
73 lines
2.6 KiB
C++
73 lines
2.6 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/GraphicsDevice.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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public:
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static NonnullRefPtr<FramebufferDevice> create(const GraphicsDevice&, size_t, PhysicalAddress, size_t, size_t, size_t);
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virtual KResult ioctl(FileDescription&, unsigned request, Userspace<void*> arg) override;
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virtual KResultOr<Memory::Region*> mmap(Process&, FileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
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// ^Device
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virtual mode_t required_mode() const override { return 0660; }
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virtual String device_name() const 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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private:
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// ^File
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virtual StringView class_name() const override { return "FramebufferDevice"; }
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virtual bool can_read(const FileDescription&, size_t) const override final { return true; }
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virtual bool can_write(const FileDescription&, 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(FileDescription&, u64, UserOrKernelBuffer&, size_t) override { return EINVAL; }
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virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return EINVAL; }
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FramebufferDevice(const GraphicsDevice&, size_t, PhysicalAddress, size_t, size_t, size_t);
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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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NonnullRefPtr<GraphicsDevice> m_graphics_adapter;
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};
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}
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