d556638404
refactored it to be a generic device. Instead of being part of the standard kernel, there is now a 'nvram' device for i386/amd64. It is in DEFAULTS like io and mem, and can be turned off with 'nodevice nvram'. This matches the previous behavior when it was first committed.
44 lines
881 B
C
44 lines
881 B
C
/*-
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* Kernel interface to machine-dependent clock driver.
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* Garrett Wollman, September 1994.
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* This file is in the public domain.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_CLOCK_H_
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#define _MACHINE_CLOCK_H_
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#ifdef _KERNEL
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/*
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* i386 to clock driver interface.
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* XXX large parts of the driver and its interface are misplaced.
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*/
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extern int clkintr_pending;
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extern int pscnt;
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extern int psdiv;
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extern int statclock_disable;
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extern u_int timer_freq;
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extern int timer0_max_count;
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extern uint64_t tsc_freq;
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extern int tsc_is_broken;
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void i8254_init(void);
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/*
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* Driver to clock driver interface.
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*/
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int acquire_timer2(int mode);
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int release_timer2(void);
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int rtcin(int reg);
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void writertc(int reg, unsigned char val);
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int sysbeep(int pitch, int period);
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void timer_restore(void);
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void init_TSC(void);
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void init_TSC_tc(void);
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#endif /* _KERNEL */
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#endif /* !_MACHINE_CLOCK_H_ */
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