tsc.h   [plain text]


/*
 * Copyright (c) 2004-2007 Apple Inc. All rights reserved.
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/*
 * @OSF_COPYRIGHT@
 */
/*
 * @APPLE_FREE_COPYRIGHT@
 */
/*
 *	File:		tsc.h
 *	Purpose:	Contains the TSC initialization and conversion
 *			factors.
 */
#ifdef KERNEL_PRIVATE
#ifndef _I386_TSC_H_
#define _I386_TSC_H_

#define BASE_NHM_CLOCK_SOURCE 	133333333ULL
#define IA32_PERF_STS		0x198

extern uint64_t	busFCvtt2n;
extern uint64_t	busFCvtn2t;
extern uint64_t tscFreq;
extern uint64_t tscFCvtt2n;
extern uint64_t tscFCvtn2t;
extern uint64_t tscGranularity;
extern uint64_t bus2tsc;
extern uint64_t busFreq;
extern uint32_t	flex_ratio;
extern uint32_t	flex_ratio_min;
extern uint32_t	flex_ratio_max;

struct tscInfo
{
	uint64_t	busFCvtt2n;
	uint64_t	busFCvtn2t;
	uint64_t	tscFreq;
	uint64_t	tscFCvtt2n;
	uint64_t	tscFCvtn2t;
	uint64_t	tscGranularity;
	uint64_t	bus2tsc;
	uint64_t	busFreq;
	uint32_t	flex_ratio;
	uint32_t	flex_ratio_min;
	uint32_t	flex_ratio_max;
};
typedef struct tscInfo tscInfo_t;

extern void tsc_get_info(tscInfo_t *info);

extern void tsc_init(void);

#endif /* _I386_TSC_H_ */
#endif /* KERNEL_PRIVATE */