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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_MACHCLOCK_H
#define _SYS_MACHCLOCK_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _ASM
/*
* Macro to clear the NPT (non-privileged trap) bit in the %tick/%stick
* register. Uses %g1-%g4.
*/
#define CLEARTICKNPT \
sethi %hi(cpu_clearticknpt), %g1; \
jmp %g1 + %lo(cpu_clearticknpt); \
rd %pc, %g4
#endif /* _ASM */
#if defined(CPU_MODULE)
/*
* Constants used to convert hi-res timestamps into nanoseconds
* (see <sys/clock.h> file for more information)
*/
#if defined(CHEETAH) || defined(HUMMINGBIRD) || defined(OLYMPUS_C)
/*
* At least 3.9MHz, for slower %stick-based systems.
*/
#define NSEC_SHIFT 8
#define VTRACE_SHIFT 8
#elif defined(SPITFIRE)
/*
* At least 62.5 MHz, for faster %tick-based systems.
*/
#define NSEC_SHIFT 4
#define VTRACE_SHIFT 4
#else
#error "Compiling for CPU_MODULE but no CPU specified"
#endif
#endif /* CPU_MODULE */
#ifndef _ASM
#ifdef _KERNEL
/*
* Hardware watchdog variables and knobs
*/
#define CLK_WATCHDOG_DEFAULT 10 /* 10 seconds */
extern int watchdog_enable;
extern int watchdog_available;
extern int watchdog_activated;
extern uint_t watchdog_timeout_seconds;
/*
* tod module name and operations
*/
struct tod_ops {
timestruc_t (*tod_get)(void);
void (*tod_set)(timestruc_t);
uint_t (*tod_set_watchdog_timer)(uint_t);
uint_t (*tod_clear_watchdog_timer)(void);
void (*tod_set_power_alarm)(timestruc_t);
void (*tod_clear_power_alarm)(void);
uint64_t (*tod_get_cpufrequency)(void);
};
extern struct tod_ops tod_ops;
extern char *tod_module_name;
/*
* These defines allow common code to use TOD functions independant
* of hardware platform.
*/
#define TODOP_GET(top) ((top).tod_get())
#define TODOP_SET(top, ts) ((top).tod_set(ts))
#define TODOP_SETWD(top, nsec) ((top).tod_set_watchdog_timer(nsec))
#define TODOP_CLRWD(top) ((top).tod_clear_watchdog_timer())
#define TODOP_SETWAKE(top, ts) ((top).tod_set_power_alarm(ts))
#define TODOP_CLRWAKE(top) ((top).tod_clear_power_alarm())
#endif /* _KERNEL */
#endif /* _ASM */
#ifdef __cplusplus
}
#endif
#endif /* !_SYS_MACHCLOCK_H */
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