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https://github.com/RGBCube/serenity
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8cbb7f101f
This will allow us to implement different behaviors depending on the role of the descriptor a File is being accessed through.
38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
#pragma once
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#include <AK/Types.h>
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#include <AK/AKString.h>
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#include <SharedGraphics/Size.h>
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#include <Kernel/PhysicalAddress.h>
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#include <Kernel/Devices/BlockDevice.h>
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class BXVGADevice final : public BlockDevice {
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AK_MAKE_ETERNAL
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public:
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static BXVGADevice& the();
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BXVGADevice();
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PhysicalAddress framebuffer_address() const { return m_framebuffer_address; }
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void set_resolution(int width, int height);
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void set_y_offset(int);
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virtual int ioctl(FileDescriptor&, unsigned request, unsigned arg) override;
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virtual KResultOr<Region*> mmap(Process&, LinearAddress preferred_laddr, size_t offset, size_t) override;
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size_t framebuffer_size_in_bytes() const { return m_framebuffer_size.area() * sizeof(dword) * 2; }
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Size framebuffer_size() const { return m_framebuffer_size; }
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private:
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virtual const char* class_name() const override { return "BXVGA"; }
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virtual bool can_read(FileDescriptor&) const override;
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virtual bool can_write(FileDescriptor&) const override;
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virtual ssize_t read(FileDescriptor&, byte*, ssize_t) override;
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virtual ssize_t write(FileDescriptor&, const byte*, ssize_t) override;
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void set_register(word index, word value);
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dword find_framebuffer_address();
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PhysicalAddress m_framebuffer_address;
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Size m_framebuffer_size;
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};
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