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hpet.h

 

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#ifndef __HPET__

 

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#define __HPET__ 1

 

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struct hpet_info {

 

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        unsigned long hi_ireqfreq;      /* Hz */

 

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        unsigned long hi_flags; /* information */

 

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        unsigned short hi_hpet;

 

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        unsigned short hi_timer;

 

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};

 

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#define HPET_INFO_PERIODIC      0x0001  /* timer is periodic */

 

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#define HPET_IE_ON      _IO('h', 0x01)  /* interrupt on */

 

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#define HPET_IE_OFF     _IO('h', 0x02)  /* interrupt off */

 

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#define HPET_INFO       _IOR('h', 0x03, struct hpet_info)

 

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#define HPET_EPI        _IO('h', 0x04)  /* enable periodic */

 

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#define HPET_DPI        _IO('h', 0x05)  /* disable periodic */

 

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#define HPET_IRQFREQ    _IOW('h', 0x6, unsigned long)   /* IRQFREQ usec */

 

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#endif                          /* !__HPET__ */

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