/* * 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 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* * Copyright 2019 Peter Tribble. */ #include <sys/machsystm.h> #include <sys/cpu_module.h> #include <sys/dtrace.h> #include <sys/cpu_sgnblk_defs.h> /* * Useful for disabling MP bring-up for an MP capable kernel * (a kernel that was built with MP defined) */ int use_mp = 1; /* set to come up mp */ /* * Init CPU info - get CPU type info for processor_info system call. */ void init_cpu_info(struct cpu *cp) { processor_info_t *pi = &cp->cpu_type_info; int cpuid = cp->cpu_id; struct cpu_node *cpunode = &cpunodes[cpuid]; cp->cpu_fpowner = NULL; /* not used for V9 */ /* * Get clock-frequency property from cpunodes[] for the CPU. */ pi->pi_clock = (cpunode->clock_freq + 500000) / 1000000; /* * Current frequency in Hz. */ cp->cpu_curr_clock = cpunode->clock_freq; /* * Supported frequencies. */ cpu_set_supp_freqs(cp, NULL); (void) strcpy(pi->pi_processor_type, "sparcv9"); (void) strcpy(pi->pi_fputypes, "sparcv9"); if (cpuid == cpu0.cpu_id) { /* * cpu0 starts out running. Other cpus are * still in OBP land and we will leave them * alone for now. */ CPU_SIGNATURE(OS_SIG, SIGST_RUN, SIGSUBST_NULL, cpuid); #ifdef lint cpuid = cpuid; #endif /* lint */ } } /* * Routine used to cleanup a CPU that has been powered off. This will * destroy all per-cpu information related to this cpu. */ int mp_cpu_unconfigure(int cpuid) { int retval; void empty_cpu(int); extern int cleanup_cpu_common(int); ASSERT(MUTEX_HELD(&cpu_lock)); retval = cleanup_cpu_common(cpuid); empty_cpu(cpuid); return (retval); } struct mp_find_cpu_arg { int cpuid; /* set by mp_cpu_configure() */ dev_info_t *dip; /* set by mp_find_cpu() */ }; int mp_find_cpu(dev_info_t *dip, void *arg) { extern int get_portid_ddi(dev_info_t *, dev_info_t **); struct mp_find_cpu_arg *target = (struct mp_find_cpu_arg *)arg; char *type; int rv = DDI_WALK_CONTINUE; int cpuid; if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, "device_type", &type)) return (DDI_WALK_CONTINUE); if (strcmp(type, "cpu") != 0) goto out; cpuid = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, "cpuid", -1); if (cpuid == -1) cpuid = get_portid_ddi(dip, NULL); if (cpuid != target->cpuid) goto out; /* Found it */ rv = DDI_WALK_TERMINATE; target->dip = dip; out: ddi_prop_free(type); return (rv); } /* * Routine used to setup a newly inserted CPU in preparation for starting * it running code. */ int mp_cpu_configure(int cpuid) { extern void fill_cpu_ddi(dev_info_t *); extern int setup_cpu_common(int); struct mp_find_cpu_arg target; ASSERT(MUTEX_HELD(&cpu_lock)); target.dip = NULL; target.cpuid = cpuid; ddi_walk_devs(ddi_root_node(), mp_find_cpu, &target); if (target.dip == NULL) return (ENODEV); /* * Note: uses cpu_lock to protect cpunodes and ncpunodes * which will be modified inside of fill_cpu_ddi(). */ fill_cpu_ddi(target.dip); /* * sun4v cpu setup may fail. sun4u assumes cpu setup to * be always successful, so the return value is ignored. */ (void) setup_cpu_common(cpuid); return (0); } void populate_idstr(struct cpu *cp) { char buf[CPU_IDSTRLEN]; struct cpu_node *cpunode; processor_info_t *pi; cpunode = &cpunodes[cp->cpu_id]; pi = &cp->cpu_type_info; (void) snprintf(buf, sizeof (buf), "%s (portid %d impl 0x%x ver 0x%x clock %d MHz)", cpunode->name, cpunode->portid, cpunode->implementation, cpunode->version, pi->pi_clock); cp->cpu_idstr = kmem_alloc(strlen(buf) + 1, KM_SLEEP); (void) strcpy(cp->cpu_idstr, buf); cp->cpu_brandstr = kmem_alloc(strlen(cpunode->name) + 1, KM_SLEEP); (void) strcpy(cp->cpu_brandstr, cpunode->name); cmn_err(CE_CONT, "?cpu%d: %s\n", cp->cpu_id, cp->cpu_idstr); }