1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * sun4u common CPC subroutines. 31 */ 32 33 #include <sys/types.h> 34 #include <sys/time.h> 35 #include <sys/atomic.h> 36 #include <sys/thread.h> 37 #include <sys/regset.h> 38 #include <sys/archsystm.h> 39 #include <sys/machsystm.h> 40 #include <sys/cpc_impl.h> 41 #include <sys/cpc_ultra.h> 42 #include <sys/sunddi.h> 43 #include <sys/intr.h> 44 #include <sys/ivintr.h> 45 #include <sys/x_call.h> 46 #include <sys/cpuvar.h> 47 #include <sys/machcpuvar.h> 48 #include <sys/cpc_pcbe.h> 49 #include <sys/modctl.h> 50 #include <sys/sdt.h> 51 52 uint32_t cpc_level15_inum; /* used in interrupt.s */ 53 int cpc_has_overflow_intr; /* set in cheetah.c */ 54 55 extern kcpc_ctx_t *kcpc_overflow_intr(caddr_t arg, uint64_t bitmap); 56 extern int kcpc_counts_include_idle; 57 58 /* 59 * Called on the boot CPU during startup. 60 */ 61 void 62 kcpc_hw_init(void) 63 { 64 if (cpc_has_overflow_intr) { 65 cpc_level15_inum = add_softintr(PIL_15, 66 kcpc_hw_overflow_intr, NULL); 67 } 68 69 /* 70 * Make sure the boot CPU gets set up. 71 */ 72 kcpc_hw_startup_cpu(CPU->cpu_flags); 73 } 74 75 /* 76 * Prepare for CPC interrupts and install an idle thread CPC context. 77 */ 78 void 79 kcpc_hw_startup_cpu(ushort_t cpflags) 80 { 81 cpu_t *cp = CPU; 82 kthread_t *t = cp->cpu_idle_thread; 83 84 ASSERT(t->t_bound_cpu == cp); 85 86 if (cpc_has_overflow_intr && (cpflags & CPU_FROZEN) == 0) { 87 int pstate_save = disable_vec_intr(); 88 89 ASSERT(cpc_level15_inum != 0); 90 91 intr_enqueue_req(PIL_15, cpc_level15_inum); 92 enable_vec_intr(pstate_save); 93 } 94 95 mutex_init(&cp->cpu_cpc_ctxlock, "cpu_cpc_ctxlock", MUTEX_DEFAULT, 0); 96 97 if (kcpc_counts_include_idle) 98 return; 99 100 installctx(t, cp, kcpc_idle_save, kcpc_idle_restore, NULL, NULL, 101 NULL, NULL); 102 } 103 104 /* 105 * Examine the processor and load an appropriate PCBE. 106 */ 107 int 108 kcpc_hw_load_pcbe(void) 109 { 110 char modname[MODMAXNAMELEN+1]; 111 char *p, *q; 112 int len, stat; 113 extern char *boot_cpu_compatible_list; 114 115 for (stat = -1, p = boot_cpu_compatible_list; p != NULL; p = q) { 116 /* 117 * Get next CPU module name from boot_cpu_compatible_list 118 */ 119 q = strchr(p, ':'); 120 len = (q) ? (q - p) : strlen(p); 121 if (len < sizeof (modname)) { 122 (void) strncpy(modname, p, len); 123 modname[len] = '\0'; 124 stat = kcpc_pcbe_tryload(modname, 0, 0, 0); 125 if (stat == 0) 126 break; 127 } 128 if (q) 129 q++; /* skip over ':' */ 130 } 131 return (stat); 132 133 } 134 135 /*ARGSUSED*/ 136 static void 137 kcpc_remotestop_func(uint64_t arg1, uint64_t arg2) 138 { 139 ASSERT(CPU->cpu_cpc_ctx != NULL); 140 pcbe_ops->pcbe_allstop(); 141 atomic_or_uint(&CPU->cpu_cpc_ctx->kc_flags, KCPC_CTX_INVALID_STOPPED); 142 } 143 144 /* 145 * Ensure the counters are stopped on the given processor. 146 * 147 * Callers must ensure kernel preemption is disabled. 148 */ 149 void 150 kcpc_remote_stop(cpu_t *cp) 151 { 152 xc_one(cp->cpu_id, kcpc_remotestop_func, 0, 0); 153 } 154 155 /*ARGSUSED*/ 156 int 157 kcpc_hw_cpu_hook(processorid_t cpuid, ulong_t *kcpc_cpumap) 158 { 159 return (0); 160 } 161 162 int 163 kcpc_hw_lwp_hook(void) 164 { 165 return (0); 166 } 167