1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 1997, 1999-2002 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate 28*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate /* 31*0Sstevel@tonic-gate * tod driver module for Starfire 32*0Sstevel@tonic-gate * This module implements a soft tod since 33*0Sstevel@tonic-gate * starfire has no tod part. 34*0Sstevel@tonic-gate */ 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate #include <sys/types.h> 37*0Sstevel@tonic-gate #include <sys/param.h> 38*0Sstevel@tonic-gate #include <sys/sysmacros.h> 39*0Sstevel@tonic-gate #include <sys/systm.h> 40*0Sstevel@tonic-gate #include <sys/errno.h> 41*0Sstevel@tonic-gate #include <sys/modctl.h> 42*0Sstevel@tonic-gate #include <sys/autoconf.h> 43*0Sstevel@tonic-gate #include <sys/debug.h> 44*0Sstevel@tonic-gate #include <sys/clock.h> 45*0Sstevel@tonic-gate #include <sys/cmn_err.h> 46*0Sstevel@tonic-gate #include <sys/promif.h> 47*0Sstevel@tonic-gate #include <sys/cpuvar.h> 48*0Sstevel@tonic-gate #include <sys/cpu_sgnblk_defs.h> 49*0Sstevel@tonic-gate #include <starfire/sys/cpu_sgn.h> 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate static timestruc_t todsf_get(void); 52*0Sstevel@tonic-gate static void todsf_set(timestruc_t); 53*0Sstevel@tonic-gate static uint_t todsf_set_watchdog_timer(uint_t); 54*0Sstevel@tonic-gate static uint_t todsf_clear_watchdog_timer(void); 55*0Sstevel@tonic-gate static void todsf_set_power_alarm(timestruc_t); 56*0Sstevel@tonic-gate static void todsf_clear_power_alarm(void); 57*0Sstevel@tonic-gate static uint64_t todsf_get_cpufrequency(void); 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate extern timestruc_t hrestime; 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate /* 62*0Sstevel@tonic-gate * Module linkage information for the kernel. 63*0Sstevel@tonic-gate */ 64*0Sstevel@tonic-gate static struct modlmisc modlmisc = { 65*0Sstevel@tonic-gate &mod_miscops, "Soft tod module for Starfire %I%" 66*0Sstevel@tonic-gate }; 67*0Sstevel@tonic-gate 68*0Sstevel@tonic-gate static struct modlinkage modlinkage = { 69*0Sstevel@tonic-gate MODREV_1, (void *)&modlmisc, NULL 70*0Sstevel@tonic-gate }; 71*0Sstevel@tonic-gate 72*0Sstevel@tonic-gate int 73*0Sstevel@tonic-gate _init(void) 74*0Sstevel@tonic-gate { 75*0Sstevel@tonic-gate if (strcmp(tod_module_name, "todstarfire") == 0) { 76*0Sstevel@tonic-gate int ssp_time32; 77*0Sstevel@tonic-gate char obp_string[40]; 78*0Sstevel@tonic-gate 79*0Sstevel@tonic-gate /* Set the string to pass to OBP */ 80*0Sstevel@tonic-gate (void) sprintf(obp_string, "h# %p unix-gettod", 81*0Sstevel@tonic-gate (void *)&ssp_time32); 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate /* Get OBP to get TOD from ssp */ 84*0Sstevel@tonic-gate prom_interpret(obp_string, 0, 0, 0, 0, 0); 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate hrestime.tv_sec = (time_t)ssp_time32; 87*0Sstevel@tonic-gate 88*0Sstevel@tonic-gate tod_ops.tod_get = todsf_get; 89*0Sstevel@tonic-gate tod_ops.tod_set = todsf_set; 90*0Sstevel@tonic-gate tod_ops.tod_set_watchdog_timer = todsf_set_watchdog_timer; 91*0Sstevel@tonic-gate tod_ops.tod_clear_watchdog_timer = todsf_clear_watchdog_timer; 92*0Sstevel@tonic-gate tod_ops.tod_set_power_alarm = todsf_set_power_alarm; 93*0Sstevel@tonic-gate tod_ops.tod_clear_power_alarm = todsf_clear_power_alarm; 94*0Sstevel@tonic-gate tod_ops.tod_get_cpufrequency = todsf_get_cpufrequency; 95*0Sstevel@tonic-gate 96*0Sstevel@tonic-gate /* 97*0Sstevel@tonic-gate * Flag warning if user tried to use hardware watchdog 98*0Sstevel@tonic-gate */ 99*0Sstevel@tonic-gate if (watchdog_enable) { 100*0Sstevel@tonic-gate cmn_err(CE_WARN, "Hardware watchdog unavailable"); 101*0Sstevel@tonic-gate } 102*0Sstevel@tonic-gate } 103*0Sstevel@tonic-gate 104*0Sstevel@tonic-gate return (mod_install(&modlinkage)); 105*0Sstevel@tonic-gate } 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate int 108*0Sstevel@tonic-gate _fini(void) 109*0Sstevel@tonic-gate { 110*0Sstevel@tonic-gate if (strcmp(tod_module_name, "todstarfire") == 0) 111*0Sstevel@tonic-gate return (EBUSY); 112*0Sstevel@tonic-gate else 113*0Sstevel@tonic-gate return (mod_remove(&modlinkage)); 114*0Sstevel@tonic-gate } 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate int 117*0Sstevel@tonic-gate _info(struct modinfo *modinfop) 118*0Sstevel@tonic-gate { 119*0Sstevel@tonic-gate return (mod_info(&modlinkage, modinfop)); 120*0Sstevel@tonic-gate } 121*0Sstevel@tonic-gate 122*0Sstevel@tonic-gate 123*0Sstevel@tonic-gate /* 124*0Sstevel@tonic-gate * Simply return hrestime value 125*0Sstevel@tonic-gate * Must be called with tod_lock held. 126*0Sstevel@tonic-gate */ 127*0Sstevel@tonic-gate static timestruc_t 128*0Sstevel@tonic-gate todsf_get(void) 129*0Sstevel@tonic-gate { 130*0Sstevel@tonic-gate timestruc_t ts; 131*0Sstevel@tonic-gate extern cpu_sgnblk_t *cpu_sgnblkp[]; 132*0Sstevel@tonic-gate 133*0Sstevel@tonic-gate ASSERT(MUTEX_HELD(&tod_lock)); 134*0Sstevel@tonic-gate 135*0Sstevel@tonic-gate ts = hrestime; 136*0Sstevel@tonic-gate 137*0Sstevel@tonic-gate /* Update the heartbeat */ 138*0Sstevel@tonic-gate if (cpu_sgnblkp[CPU->cpu_id] != NULL) 139*0Sstevel@tonic-gate cpu_sgnblkp[CPU->cpu_id]->sigb_heartbeat++; 140*0Sstevel@tonic-gate return (ts); 141*0Sstevel@tonic-gate } 142*0Sstevel@tonic-gate 143*0Sstevel@tonic-gate /* 144*0Sstevel@tonic-gate * Null function for now. 145*0Sstevel@tonic-gate * Must be called with tod_lock held. 146*0Sstevel@tonic-gate */ 147*0Sstevel@tonic-gate /* ARGSUSED */ 148*0Sstevel@tonic-gate static void 149*0Sstevel@tonic-gate todsf_set(timestruc_t ts) 150*0Sstevel@tonic-gate { 151*0Sstevel@tonic-gate ASSERT(MUTEX_HELD(&tod_lock)); 152*0Sstevel@tonic-gate } 153*0Sstevel@tonic-gate 154*0Sstevel@tonic-gate 155*0Sstevel@tonic-gate /* 156*0Sstevel@tonic-gate * No watchdog function. 157*0Sstevel@tonic-gate */ 158*0Sstevel@tonic-gate /* ARGSUSED */ 159*0Sstevel@tonic-gate static uint_t 160*0Sstevel@tonic-gate todsf_set_watchdog_timer(uint_t timeoutval) 161*0Sstevel@tonic-gate { 162*0Sstevel@tonic-gate ASSERT(MUTEX_HELD(&tod_lock)); 163*0Sstevel@tonic-gate return (0); 164*0Sstevel@tonic-gate } 165*0Sstevel@tonic-gate 166*0Sstevel@tonic-gate /* 167*0Sstevel@tonic-gate * No watchdog function 168*0Sstevel@tonic-gate */ 169*0Sstevel@tonic-gate static uint_t 170*0Sstevel@tonic-gate todsf_clear_watchdog_timer(void) 171*0Sstevel@tonic-gate { 172*0Sstevel@tonic-gate ASSERT(MUTEX_HELD(&tod_lock)); 173*0Sstevel@tonic-gate return (0); 174*0Sstevel@tonic-gate } 175*0Sstevel@tonic-gate 176*0Sstevel@tonic-gate /* 177*0Sstevel@tonic-gate * Null function. 178*0Sstevel@tonic-gate */ 179*0Sstevel@tonic-gate /* ARGSUSED */ 180*0Sstevel@tonic-gate static void 181*0Sstevel@tonic-gate todsf_set_power_alarm(timestruc_t ts) 182*0Sstevel@tonic-gate { 183*0Sstevel@tonic-gate ASSERT(MUTEX_HELD(&tod_lock)); 184*0Sstevel@tonic-gate } 185*0Sstevel@tonic-gate 186*0Sstevel@tonic-gate /* 187*0Sstevel@tonic-gate * Null function 188*0Sstevel@tonic-gate */ 189*0Sstevel@tonic-gate static void 190*0Sstevel@tonic-gate todsf_clear_power_alarm() 191*0Sstevel@tonic-gate { 192*0Sstevel@tonic-gate ASSERT(MUTEX_HELD(&tod_lock)); 193*0Sstevel@tonic-gate } 194*0Sstevel@tonic-gate 195*0Sstevel@tonic-gate /* 196*0Sstevel@tonic-gate * Get clock freq from the cpunode 197*0Sstevel@tonic-gate */ 198*0Sstevel@tonic-gate uint64_t 199*0Sstevel@tonic-gate todsf_get_cpufrequency(void) 200*0Sstevel@tonic-gate { 201*0Sstevel@tonic-gate return (cpunodes[CPU->cpu_id].clock_freq); 202*0Sstevel@tonic-gate } 203