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https://github.com/RGBCube/serenity
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08cd75ac4b
After reading a bunch of POSIX specs, I've learned that a file descriptor is the number that refers to a file description, not the description itself. So this patch renames FileDescriptor to FileDescription, and Process now has FileDescription* file_description(int fd).
43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
#pragma once
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#include <AK/CircularQueue.h>
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#include <Kernel/Devices/CharacterDevice.h>
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#include <Kernel/IRQHandler.h>
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#include <Kernel/MousePacket.h>
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class PS2MouseDevice final : public IRQHandler
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, public CharacterDevice {
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public:
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PS2MouseDevice();
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virtual ~PS2MouseDevice() override;
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static PS2MouseDevice& the();
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// ^CharacterDevice
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virtual bool can_read(FileDescription&) const override;
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virtual ssize_t read(FileDescription&, byte*, ssize_t) override;
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virtual ssize_t write(FileDescription&, const byte*, ssize_t) override;
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virtual bool can_write(FileDescription&) const override { return true; }
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private:
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// ^IRQHandler
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virtual void handle_irq() override;
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// ^CharacterDevice
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virtual const char* class_name() const override { return "PS2MouseDevice"; }
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void initialize();
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void prepare_for_input();
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void prepare_for_output();
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void mouse_write(byte);
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byte mouse_read();
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void wait_then_write(byte port, byte data);
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byte wait_then_read(byte port);
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void parse_data_packet();
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void expect_ack();
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CircularQueue<MousePacket, 100> m_queue;
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byte m_data_state { 0 };
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byte m_data[4];
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bool m_has_wheel { false };
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};
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