1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate #ifndef _SYS_CLOCK_H 28*7c478bd9Sstevel@tonic-gate #define _SYS_CLOCK_H 29*7c478bd9Sstevel@tonic-gate 30*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*7c478bd9Sstevel@tonic-gate 32*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus 33*7c478bd9Sstevel@tonic-gate extern "C" { 34*7c478bd9Sstevel@tonic-gate #endif 35*7c478bd9Sstevel@tonic-gate 36*7c478bd9Sstevel@tonic-gate #ifdef _KERNEL 37*7c478bd9Sstevel@tonic-gate 38*7c478bd9Sstevel@tonic-gate #ifndef _ASM 39*7c478bd9Sstevel@tonic-gate 40*7c478bd9Sstevel@tonic-gate #include <sys/psw.h> 41*7c478bd9Sstevel@tonic-gate #include <sys/time.h> 42*7c478bd9Sstevel@tonic-gate #include <sys/processor.h> 43*7c478bd9Sstevel@tonic-gate #if defined(__GNUC__) && defined(_ASM_INLINES) 44*7c478bd9Sstevel@tonic-gate #include <asm/clock.h> 45*7c478bd9Sstevel@tonic-gate #endif 46*7c478bd9Sstevel@tonic-gate 47*7c478bd9Sstevel@tonic-gate extern void unlock_hres_lock(void); 48*7c478bd9Sstevel@tonic-gate extern timestruc_t pc_tod_get(void); 49*7c478bd9Sstevel@tonic-gate extern void pc_tod_set(timestruc_t); 50*7c478bd9Sstevel@tonic-gate extern void hres_tick(void); 51*7c478bd9Sstevel@tonic-gate extern void (*hrtime_tick)(void); 52*7c478bd9Sstevel@tonic-gate 53*7c478bd9Sstevel@tonic-gate extern void tsc_hrtimeinit(uint64_t cpu_freq_hz); 54*7c478bd9Sstevel@tonic-gate extern hrtime_t tsc_gethrtime(void); 55*7c478bd9Sstevel@tonic-gate extern hrtime_t tsc_gethrtime_delta(void); 56*7c478bd9Sstevel@tonic-gate extern hrtime_t tsc_gethrtimeunscaled(void); 57*7c478bd9Sstevel@tonic-gate extern void tsc_scalehrtime(hrtime_t *); 58*7c478bd9Sstevel@tonic-gate extern hrtime_t tsc_gethrtimeunscaled_delta(void); 59*7c478bd9Sstevel@tonic-gate extern void tsc_tick(void); 60*7c478bd9Sstevel@tonic-gate extern void tsc_sync_master(processorid_t); 61*7c478bd9Sstevel@tonic-gate extern void tsc_sync_slave(void); 62*7c478bd9Sstevel@tonic-gate extern hrtime_t tsc_read(void); 63*7c478bd9Sstevel@tonic-gate 64*7c478bd9Sstevel@tonic-gate 65*7c478bd9Sstevel@tonic-gate #define ADJ_SHIFT 4 /* used in get_hrestime */ 66*7c478bd9Sstevel@tonic-gate 67*7c478bd9Sstevel@tonic-gate #define YRBASE 00 /* 1900 - what year 0 in chip represents */ 68*7c478bd9Sstevel@tonic-gate 69*7c478bd9Sstevel@tonic-gate #endif /* !_ASM */ 70*7c478bd9Sstevel@tonic-gate 71*7c478bd9Sstevel@tonic-gate #define CBE_HIGH_PIL 14 72*7c478bd9Sstevel@tonic-gate #define CBE_LOCK_PIL LOCK_LEVEL 73*7c478bd9Sstevel@tonic-gate #define CBE_LOW_PIL 2 74*7c478bd9Sstevel@tonic-gate 75*7c478bd9Sstevel@tonic-gate /* 76*7c478bd9Sstevel@tonic-gate * CLOCK_LOCK() sets the LSB (bit 0) of the hres_lock. The rest of the 77*7c478bd9Sstevel@tonic-gate * 31bits are used as the counter. This lock is acquired 78*7c478bd9Sstevel@tonic-gate * around "hrestime" and "timedelta". This lock is acquired to make 79*7c478bd9Sstevel@tonic-gate * sure that level-14 accounts for changes to this variable in that 80*7c478bd9Sstevel@tonic-gate * interrupt itself. The level-14 interrupt code also acquires this 81*7c478bd9Sstevel@tonic-gate * lock. 82*7c478bd9Sstevel@tonic-gate * (Note: It is assumed that the lock_set_spl() uses only bit 0 of the lock.) 83*7c478bd9Sstevel@tonic-gate * 84*7c478bd9Sstevel@tonic-gate * CLOCK_UNLOCK() increments the lower bytes straight, thus clearing the 85*7c478bd9Sstevel@tonic-gate * lock and also incrementing the counter. This way gethrtime() 86*7c478bd9Sstevel@tonic-gate * can figure out if the value in the lock got changed or not. 87*7c478bd9Sstevel@tonic-gate */ 88*7c478bd9Sstevel@tonic-gate #define HRES_LOCK_OFFSET 0 /* byte 0 has the lock bit(bit 0 in the byte) */ 89*7c478bd9Sstevel@tonic-gate 90*7c478bd9Sstevel@tonic-gate #define CLOCK_LOCK(oldsplp) \ 91*7c478bd9Sstevel@tonic-gate lock_set_spl((lock_t *)&hres_lock + HRES_LOCK_OFFSET, \ 92*7c478bd9Sstevel@tonic-gate ipltospl(XC_HI_PIL), oldsplp) 93*7c478bd9Sstevel@tonic-gate 94*7c478bd9Sstevel@tonic-gate #define CLOCK_UNLOCK(spl) \ 95*7c478bd9Sstevel@tonic-gate unlock_hres_lock(); \ 96*7c478bd9Sstevel@tonic-gate splx(spl); \ 97*7c478bd9Sstevel@tonic-gate LOCKSTAT_RECORD0(LS_CLOCK_UNLOCK_RELEASE, \ 98*7c478bd9Sstevel@tonic-gate (lock_t *)&hres_lock + HRES_LOCK_OFFSET); 99*7c478bd9Sstevel@tonic-gate 100*7c478bd9Sstevel@tonic-gate #endif /* KERNEL */ 101*7c478bd9Sstevel@tonic-gate 102*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus 103*7c478bd9Sstevel@tonic-gate } 104*7c478bd9Sstevel@tonic-gate #endif 105*7c478bd9Sstevel@tonic-gate 106*7c478bd9Sstevel@tonic-gate #endif /* _SYS_CLOCK_H */ 107