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  */
   8
   9 #ifndef _MACHINE_CLOCK_H_
  10 #define _MACHINE_CLOCK_H_
  11
  12 #ifndef _SYS_TYPES_H_
  13 #include <sys/types.h>
  14 #endif
  15
  16 #ifdef _KERNEL
  17
  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 #endif
  29
  30 typedef uint64_t tsc_uclock_t;
  31 typedef int64_t tsc_sclock_t;
  32
  33 #ifdef _KERNEL
  34
  35 /*
  36  * x86 to clock driver interface.
  37  * XXX large parts of the driver and its interface are misplaced.
  38  */
  39 extern int      adjkerntz;
  40 extern int      disable_rtc_set;
  41 extern int      tsc_present;
  42 extern int      tsc_invariant;
  43 extern int      tsc_mpsync;
  44 extern int      wall_cmos_clock;
  45 extern tsc_uclock_t tsc_frequency;
  46 extern tsc_uclock_t tsc_oneus_approx;   /* do not use for fine calc, min 1 */
  47 extern int      i8254_cputimer_disable; /* No need to initialize i8254 cputimer. */
  48
  49 /*
  50  * Driver to clock driver interface.
  51  */
  52
  53 int     CHECKTIMEOUT(TOTALDELAY *);
  54 int     rtcin (int val);
  55 int     acquire_timer2 (int mode);
  56 int     release_timer2 (void);
  57 int     sysbeep (int pitch, int period);
  58 void    timer_restore (void);
  59
  60 /*
  61  * Allow registering timecounter initialization code.
  62  */
  63 typedef struct timecounter_init {
  64         char *name;
  65         void (*configure)(void);
  66 } timecounter_init_t;
  67
  68 #define TIMECOUNTER_INIT(name, config)                  \
  69         static struct timecounter_init name##_timer = { \
  70                 #name, config                           \
  71         };                                              \
  72         DATA_SET(timecounter_init_set, name##_timer);
  73
  74 #endif /* _KERNEL */
  75
  76 #endif /* !_MACHINE_CLOCK_H_ */