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48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
#pragma once
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#include <AK/Lock.h>
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#include <AK/RetainPtr.h>
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#include <Kernel/DiskDevice.h>
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#include "IRQHandler.h"
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class IDEDiskDevice final : public IRQHandler, public DiskDevice {
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public:
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static RetainPtr<IDEDiskDevice> create();
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virtual ~IDEDiskDevice() override;
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// ^DiskDevice
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virtual unsigned block_size() const override;
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virtual bool read_block(unsigned index, byte*) const override;
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virtual bool write_block(unsigned index, const byte*) override;
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protected:
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IDEDiskDevice();
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private:
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// ^IRQHandler
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virtual void handle_irq() override;
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// ^DiskDevice
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virtual const char* class_name() const override;
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struct CHS {
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dword cylinder;
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word head;
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word sector;
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};
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CHS lba_to_chs(dword) const;
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void initialize();
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bool wait_for_irq();
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bool read_sectors(dword start_sector, word count, byte* buffer);
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bool write_sectors(dword start_sector, word count, const byte* data);
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Lock m_lock;
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word m_cylinders { 0 };
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word m_heads { 0 };
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word m_sectors_per_track { 0 };
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volatile bool m_interrupted { false };
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volatile byte m_device_error { 0 };
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};
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