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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* 29 * sun4u common CPC subroutines. 30 */ 31 32 #include <sys/types.h> 33 #include <sys/time.h> 34 #include <sys/atomic.h> 35 #include <sys/thread.h> 36 #include <sys/regset.h> 37 #include <sys/archsystm.h> 38 #include <sys/machsystm.h> 39 #include <sys/cpc_impl.h> 40 #include <sys/cpc_ultra.h> 41 #include <sys/sunddi.h> 42 #include <sys/intr.h> 43 #include <sys/ivintr.h> 44 #include <sys/x_call.h> 45 #include <sys/cpuvar.h> 46 #include <sys/machcpuvar.h> 47 #include <sys/cpc_pcbe.h> 48 #include <sys/modctl.h> 49 #include <sys/sdt.h> 50 51 uint64_t cpc_level15_inum; /* used in interrupt.s */ 52 int cpc_has_overflow_intr; /* set in cheetah.c */ 53 54 extern kcpc_ctx_t *kcpc_overflow_intr(caddr_t arg, uint64_t bitmap); 55 extern int kcpc_counts_include_idle; 56 57 /* 58 * Called on the boot CPU during startup. 59 */ 60 void 61 kcpc_hw_init(void) 62 { 63 if (cpc_has_overflow_intr) { 64 cpc_level15_inum = add_softintr(PIL_15, 65 kcpc_hw_overflow_intr, NULL, SOFTINT_MT); 66 } 67 68 /* 69 * Make sure the boot CPU gets set up. 70 */ 71 kcpc_hw_startup_cpu(CPU->cpu_flags); 72 } 73 74 /* 75 * Prepare for CPC interrupts and install an idle thread CPC context. 76 */ 77 void 78 kcpc_hw_startup_cpu(ushort_t cpflags) 79 { 80 cpu_t *cp = CPU; 81 kthread_t *t = cp->cpu_idle_thread; 82 83 ASSERT(t->t_bound_cpu == cp); 84 85 if (cpc_has_overflow_intr && (cpflags & CPU_FROZEN) == 0) { 86 int pstate_save = disable_vec_intr(); 87 88 ASSERT(cpc_level15_inum != 0); 89 90 intr_enqueue_req(PIL_15, cpc_level15_inum); 91 enable_vec_intr(pstate_save); 92 } 93 94 mutex_init(&cp->cpu_cpc_ctxlock, "cpu_cpc_ctxlock", MUTEX_DEFAULT, 0); 95 96 if (kcpc_counts_include_idle) 97 return; 98 99 installctx(t, cp, kcpc_idle_save, kcpc_idle_restore, NULL, NULL, 100 NULL, NULL); 101 } 102 103 /* 104 * Examine the processor and load an appropriate PCBE. 105 */ 106 int 107 kcpc_hw_load_pcbe(void) 108 { 109 char modname[MODMAXNAMELEN+1]; 110 char *p, *q; 111 int len, stat; 112 extern char *boot_cpu_compatible_list; 113 114 for (stat = -1, p = boot_cpu_compatible_list; p != NULL; p = q) { 115 /* 116 * Get next CPU module name from boot_cpu_compatible_list 117 */ 118 q = strchr(p, ':'); 119 len = (q) ? (q - p) : strlen(p); 120 if (len < sizeof (modname)) { 121 (void) strncpy(modname, p, len); 122 modname[len] = '\0'; 123 stat = kcpc_pcbe_tryload(modname, 0, 0, 0); 124 if (stat == 0) 125 break; 126 } 127 if (q) 128 q++; /* skip over ':' */ 129 } 130 return (stat); 131 132 } 133 134 /*ARGSUSED*/ 135 static void 136 kcpc_remotestop_func(uint64_t arg1, uint64_t arg2) 137 { 138 ASSERT(CPU->cpu_cpc_ctx != NULL); 139 pcbe_ops->pcbe_allstop(); 140 atomic_or_uint(&CPU->cpu_cpc_ctx->kc_flags, KCPC_CTX_INVALID_STOPPED); 141 } 142 143 /* 144 * Ensure the counters are stopped on the given processor. 145 * 146 * Callers must ensure kernel preemption is disabled. 147 */ 148 void 149 kcpc_remote_stop(cpu_t *cp) 150 { 151 xc_one(cp->cpu_id, kcpc_remotestop_func, 0, 0); 152 } 153 154 /*ARGSUSED*/ 155 int 156 kcpc_hw_cpu_hook(processorid_t cpuid, ulong_t *kcpc_cpumap) 157 { 158 return (0); 159 } 160 161 int 162 kcpc_hw_lwp_hook(void) 163 { 164 return (0); 165 } 166