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 2005 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 #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate #include <sys/machsystm.h> 30*0Sstevel@tonic-gate #include <sys/cpu_module.h> 31*0Sstevel@tonic-gate #include <sys/dtrace.h> 32*0Sstevel@tonic-gate #include <sys/cpu_sgnblk_defs.h> 33*0Sstevel@tonic-gate 34*0Sstevel@tonic-gate /* 35*0Sstevel@tonic-gate * Useful for disabling MP bring-up for an MP capable kernel 36*0Sstevel@tonic-gate * (a kernel that was built with MP defined) 37*0Sstevel@tonic-gate */ 38*0Sstevel@tonic-gate int use_mp = 1; /* set to come up mp */ 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate /* 41*0Sstevel@tonic-gate * Init CPU info - get CPU type info for processor_info system call. 42*0Sstevel@tonic-gate */ 43*0Sstevel@tonic-gate void 44*0Sstevel@tonic-gate init_cpu_info(struct cpu *cp) 45*0Sstevel@tonic-gate { 46*0Sstevel@tonic-gate processor_info_t *pi = &cp->cpu_type_info; 47*0Sstevel@tonic-gate int cpuid = cp->cpu_id; 48*0Sstevel@tonic-gate struct cpu_node *cpunode = &cpunodes[cpuid]; 49*0Sstevel@tonic-gate char buf[CPU_IDSTRLEN]; 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate cp->cpu_fpowner = NULL; /* not used for V9 */ 52*0Sstevel@tonic-gate 53*0Sstevel@tonic-gate /* 54*0Sstevel@tonic-gate * Get clock-frequency property from cpunodes[] for the CPU. 55*0Sstevel@tonic-gate */ 56*0Sstevel@tonic-gate pi->pi_clock = (cpunode->clock_freq + 500000) / 1000000; 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate (void) strcpy(pi->pi_processor_type, "sparcv9"); 59*0Sstevel@tonic-gate (void) strcpy(pi->pi_fputypes, "sparcv9"); 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate (void) snprintf(buf, sizeof (buf), 62*0Sstevel@tonic-gate "%s (portid %d impl 0x%x ver 0x%x clock %d MHz)", 63*0Sstevel@tonic-gate cpunode->name, cpunode->portid, 64*0Sstevel@tonic-gate cpunode->implementation, cpunode->version, pi->pi_clock); 65*0Sstevel@tonic-gate 66*0Sstevel@tonic-gate cp->cpu_idstr = kmem_alloc(strlen(buf) + 1, KM_SLEEP); 67*0Sstevel@tonic-gate (void) strcpy(cp->cpu_idstr, buf); 68*0Sstevel@tonic-gate 69*0Sstevel@tonic-gate cmn_err(CE_CONT, "?cpu%d: %s\n", cpuid, cp->cpu_idstr); 70*0Sstevel@tonic-gate 71*0Sstevel@tonic-gate cp->cpu_brandstr = kmem_alloc(strlen(cpunode->name) + 1, KM_SLEEP); 72*0Sstevel@tonic-gate (void) strcpy(cp->cpu_brandstr, cpunode->name); 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate /* 75*0Sstevel@tonic-gate * StarFire requires the signature block stuff setup here 76*0Sstevel@tonic-gate */ 77*0Sstevel@tonic-gate CPU_SGN_MAPIN(cpuid); 78*0Sstevel@tonic-gate if (cpuid == cpu0.cpu_id) { 79*0Sstevel@tonic-gate /* 80*0Sstevel@tonic-gate * cpu0 starts out running. Other cpus are 81*0Sstevel@tonic-gate * still in OBP land and we will leave them 82*0Sstevel@tonic-gate * alone for now. 83*0Sstevel@tonic-gate */ 84*0Sstevel@tonic-gate CPU_SIGNATURE(OS_SIG, SIGST_RUN, SIGSUBST_NULL, cpuid); 85*0Sstevel@tonic-gate #ifdef lint 86*0Sstevel@tonic-gate cpuid = cpuid; 87*0Sstevel@tonic-gate #endif /* lint */ 88*0Sstevel@tonic-gate } 89*0Sstevel@tonic-gate } 90*0Sstevel@tonic-gate 91*0Sstevel@tonic-gate /* 92*0Sstevel@tonic-gate * Routine used to cleanup a CPU that has been powered off. This will 93*0Sstevel@tonic-gate * destroy all per-cpu information related to this cpu. 94*0Sstevel@tonic-gate */ 95*0Sstevel@tonic-gate int 96*0Sstevel@tonic-gate mp_cpu_unconfigure(int cpuid) 97*0Sstevel@tonic-gate { 98*0Sstevel@tonic-gate int retval; 99*0Sstevel@tonic-gate void empty_cpu(int); 100*0Sstevel@tonic-gate extern int cleanup_cpu_common(int); 101*0Sstevel@tonic-gate 102*0Sstevel@tonic-gate ASSERT(MUTEX_HELD(&cpu_lock)); 103*0Sstevel@tonic-gate 104*0Sstevel@tonic-gate retval = cleanup_cpu_common(cpuid); 105*0Sstevel@tonic-gate 106*0Sstevel@tonic-gate empty_cpu(cpuid); 107*0Sstevel@tonic-gate 108*0Sstevel@tonic-gate return (retval); 109*0Sstevel@tonic-gate } 110*0Sstevel@tonic-gate 111*0Sstevel@tonic-gate struct mp_find_cpu_arg { 112*0Sstevel@tonic-gate int cpuid; /* set by mp_cpu_configure() */ 113*0Sstevel@tonic-gate dev_info_t *dip; /* set by mp_find_cpu() */ 114*0Sstevel@tonic-gate }; 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate int 117*0Sstevel@tonic-gate mp_find_cpu(dev_info_t *dip, void *arg) 118*0Sstevel@tonic-gate { 119*0Sstevel@tonic-gate extern int get_portid_ddi(dev_info_t *, dev_info_t **); 120*0Sstevel@tonic-gate struct mp_find_cpu_arg *target = (struct mp_find_cpu_arg *)arg; 121*0Sstevel@tonic-gate char *type; 122*0Sstevel@tonic-gate int rv = DDI_WALK_CONTINUE; 123*0Sstevel@tonic-gate int cpuid; 124*0Sstevel@tonic-gate 125*0Sstevel@tonic-gate if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 126*0Sstevel@tonic-gate "device_type", &type)) 127*0Sstevel@tonic-gate return (DDI_WALK_CONTINUE); 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate if (strcmp(type, "cpu") != 0) 130*0Sstevel@tonic-gate goto out; 131*0Sstevel@tonic-gate 132*0Sstevel@tonic-gate cpuid = ddi_prop_get_int(DDI_DEV_T_ANY, dip, 133*0Sstevel@tonic-gate DDI_PROP_DONTPASS, "cpuid", -1); 134*0Sstevel@tonic-gate 135*0Sstevel@tonic-gate if (cpuid == -1) 136*0Sstevel@tonic-gate cpuid = get_portid_ddi(dip, NULL); 137*0Sstevel@tonic-gate if (cpuid != target->cpuid) 138*0Sstevel@tonic-gate goto out; 139*0Sstevel@tonic-gate 140*0Sstevel@tonic-gate /* Found it */ 141*0Sstevel@tonic-gate rv = DDI_WALK_TERMINATE; 142*0Sstevel@tonic-gate target->dip = dip; 143*0Sstevel@tonic-gate 144*0Sstevel@tonic-gate out: 145*0Sstevel@tonic-gate ddi_prop_free(type); 146*0Sstevel@tonic-gate return (rv); 147*0Sstevel@tonic-gate } 148*0Sstevel@tonic-gate 149*0Sstevel@tonic-gate /* 150*0Sstevel@tonic-gate * Routine used to setup a newly inserted CPU in preparation for starting 151*0Sstevel@tonic-gate * it running code. 152*0Sstevel@tonic-gate */ 153*0Sstevel@tonic-gate int 154*0Sstevel@tonic-gate mp_cpu_configure(int cpuid) 155*0Sstevel@tonic-gate { 156*0Sstevel@tonic-gate extern void fill_cpu_ddi(dev_info_t *); 157*0Sstevel@tonic-gate extern void setup_cpu_common(int); 158*0Sstevel@tonic-gate struct mp_find_cpu_arg target; 159*0Sstevel@tonic-gate 160*0Sstevel@tonic-gate ASSERT(MUTEX_HELD(&cpu_lock)); 161*0Sstevel@tonic-gate 162*0Sstevel@tonic-gate target.dip = NULL; 163*0Sstevel@tonic-gate target.cpuid = cpuid; 164*0Sstevel@tonic-gate ddi_walk_devs(ddi_root_node(), mp_find_cpu, &target); 165*0Sstevel@tonic-gate 166*0Sstevel@tonic-gate if (target.dip == NULL) 167*0Sstevel@tonic-gate return (ENODEV); 168*0Sstevel@tonic-gate 169*0Sstevel@tonic-gate /* 170*0Sstevel@tonic-gate * Note: uses cpu_lock to protect cpunodes and ncpunodes 171*0Sstevel@tonic-gate * which will be modified inside of fill_cpu_ddi(). 172*0Sstevel@tonic-gate */ 173*0Sstevel@tonic-gate fill_cpu_ddi(target.dip); 174*0Sstevel@tonic-gate 175*0Sstevel@tonic-gate setup_cpu_common(cpuid); 176*0Sstevel@tonic-gate 177*0Sstevel@tonic-gate return (0); 178*0Sstevel@tonic-gate } 179