sys/platform/pc64/include/clock.h

   1 /*
   2  * Kernel interface to machine-dependent clock driver.
   3  * Garrett Wollman, September 1994.
   4  * This file is in the public domain.
   5  *
   6  * $FreeBSD: src/sys/i386/include/clock.h,v 1.38.2.1 2002/11/02 04:41:50 iwasaki Exp $
   7  * $DragonFly: src/sys/platform/pc32/include/clock.h,v 1.9 2008/05/10 17:24:08 dillon Exp $
   8  */
   9
  10 #ifndef _MACHINE_CLOCK_H_
  11 #define _MACHINE_CLOCK_H_
  12
  13 #ifdef _KERNEL
  14
  15 #ifndef _SYS_TYPES_H_
  16 #include <sys/types.h>
  17 #endif
  18 #ifndef _SYS_SYSTIMER_H_
  19 #include <sys/systimer.h>
  20 #endif
  21
  22 typedef struct TOTALDELAY {
  23         int             us;
  24         int             started;
  25         sysclock_t      last_clock;
  26 } TOTALDELAY;
  27
  28 typedef uint64_t tsc_uclock_t;
  29 typedef int64_t tsc_sclock_t;
  30
  31 /*
  32  * i386 to clock driver interface.
  33  * XXX large parts of the driver and its interface are misplaced.
  34  */
  35 extern int      adjkerntz;
  36 extern int      disable_rtc_set;
  37 extern u_int    timer_freq;
  38 extern int      timer0_max_count;
  39 extern int      tsc_present;
  40 extern int      tsc_invariant;
  41 extern int      tsc_mpsync;
  42 extern int      tsc_is_broken;
  43 extern int      wall_cmos_clock;
  44 extern tsc_uclock_t tsc_frequency;
  45 extern tsc_uclock_t tsc_oneus_approx;   /* do not use for fine calc, min 1 */
  46
  47 /*
  48  * Driver to clock driver interface.
  49  */
  50
  51 int     CHECKTIMEOUT(TOTALDELAY *);
  52 int     rtcin (int val);
  53 int     acquire_timer2 (int mode);
  54 int     release_timer2 (void);
  55 int     sysbeep (int pitch, int period);
  56 void    timer_restore (void);
  57
  58 #endif /* _KERNEL */
  59
  60 #endif /* !_MACHINE_CLOCK_H_ */