79 lines
2.5 KiB
C
Executable File
79 lines
2.5 KiB
C
Executable File
/*
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* Copyright 2001 MontaVista Software Inc.
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* Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
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*
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* include/asm-mips/time.h
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* header file for the new style time.c file and time services.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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/*
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* Please refer to Documentation/MIPS/time.README.
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*/
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#ifndef _ASM_TIME_H
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#define _ASM_TIME_H
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#include <linux/ptrace.h> /* for struct pt_regs */
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#include <linux/linkage.h> /* for asmlinkage */
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#include <linux/rtc.h> /* for struct rtc_time */
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/*
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* RTC ops. By default, they point a no-RTC functions.
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* rtc_get_time - mktime(year, mon, day, hour, min, sec) in seconds.
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* rtc_set_time - reverse the above translation and set time to RTC.
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*/
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extern unsigned long (*rtc_get_time)(void);
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extern int (*rtc_set_time)(unsigned long);
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/*
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* to_tm() converts system time back to (year, mon, day, hour, min, sec).
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* It is intended to help implement rtc_set_time() functions.
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* Copied from PPC implementation.
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*/
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extern void to_tm(unsigned long tim, struct rtc_time * tm);
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/*
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* do_gettimeoffset(). By default, this func pointer points to
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* do_null_gettimeoffset(), which leads to the same resolution as HZ.
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* Higher resolution versions are vailable, which gives ~1us resolution.
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*/
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extern unsigned long (*do_gettimeoffset)(void);
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extern unsigned long null_gettimeoffset(void);
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extern unsigned long fixed_rate_gettimeoffset(void);
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extern unsigned long calibrate_div32_gettimeoffset(void);
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extern unsigned long calibrate_div64_gettimeoffset(void);
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/*
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* high-level timer interrupt routines.
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*/
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extern void timer_interrupt(int irq, void *dev_id, struct pt_regs *regs);
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/*
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* the corresponding low-level timer interrupt routine.
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*/
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asmlinkage void ll_timer_interrupt(int irq, struct pt_regs *regs);
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/*
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* board specific routines required by time_init().
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* board_time_init is defaulted to NULL and can remains so.
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* board_timer_setup must be setup properly in machine setup routine.
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*/
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struct irqaction;
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extern void (*board_time_init)(void);
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extern void (*board_timer_setup)(struct irqaction *irq);
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/*
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* mips_counter_frequency - must be set if you intend to use
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* counter as timer interrupt source or use fixed_rate_gettimeoffset.
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*/
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extern unsigned int mips_counter_frequency;
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#endif /* _ASM_TIME_H */
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