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 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * sun4u common CPC subroutines. 28 */ 29 30 #include <sys/types.h> 31 #include <sys/time.h> 32 #include <sys/atomic.h> 33 #include <sys/thread.h> 34 #include <sys/regset.h> 35 #include <sys/archsystm.h> 36 #include <sys/machsystm.h> 37 #include <sys/cpc_impl.h> 38 #include <sys/cpc_ultra.h> 39 #include <sys/sunddi.h> 40 #include <sys/intr.h> 41 #include <sys/ivintr.h> 42 #include <sys/x_call.h> 43 #include <sys/cpuvar.h> 44 #include <sys/machcpuvar.h> 45 #include <sys/cpc_pcbe.h> 46 #include <sys/modctl.h> 47 #include <sys/sdt.h> 48 49 uint64_t cpc_level15_inum; /* used in interrupt.s */ 50 int cpc_has_overflow_intr; /* set in cheetah.c */ 51 52 extern kcpc_ctx_t *kcpc_overflow_intr(caddr_t arg, uint64_t bitmap); 53 extern int kcpc_counts_include_idle; 54 55 /* 56 * Called on the boot CPU during startup. 57 */ 58 void 59 kcpc_hw_init(void) 60 { 61 if (cpc_has_overflow_intr) { 62 cpc_level15_inum = add_softintr(PIL_15, 63 kcpc_hw_overflow_intr, NULL, SOFTINT_MT); 64 } 65 66 /* 67 * Make sure the boot CPU gets set up. 68 */ 69 kcpc_hw_startup_cpu(CPU->cpu_flags); 70 } 71 72 /* 73 * Prepare for CPC interrupts and install an idle thread CPC context. 74 */ 75 void 76 kcpc_hw_startup_cpu(ushort_t cpflags) 77 { 78 cpu_t *cp = CPU; 79 kthread_t *t = cp->cpu_idle_thread; 80 81 ASSERT(t->t_bound_cpu == cp); 82 83 if (cpc_has_overflow_intr && (cpflags & CPU_FROZEN) == 0) { 84 int pstate_save = disable_vec_intr(); 85 86 ASSERT(cpc_level15_inum != 0); 87 88 intr_enqueue_req(PIL_15, cpc_level15_inum); 89 enable_vec_intr(pstate_save); 90 } 91 92 mutex_init(&cp->cpu_cpc_ctxlock, "cpu_cpc_ctxlock", MUTEX_DEFAULT, 0); 93 94 if (kcpc_counts_include_idle) 95 return; 96 97 installctx(t, cp, kcpc_idle_save, kcpc_idle_restore, NULL, NULL, 98 NULL, NULL); 99 } 100 101 /* 102 * Examine the processor and load an appropriate PCBE. 103 */ 104 int 105 kcpc_hw_load_pcbe(void) 106 { 107 char modname[MODMAXNAMELEN+1]; 108 char *p, *q; 109 int len, stat; 110 extern char *boot_cpu_compatible_list; 111 112 for (stat = -1, p = boot_cpu_compatible_list; p != NULL; p = q) { 113 /* 114 * Get next CPU module name from boot_cpu_compatible_list 115 */ 116 q = strchr(p, ':'); 117 len = (q) ? (q - p) : strlen(p); 118 if (len < sizeof (modname)) { 119 (void) strncpy(modname, p, len); 120 modname[len] = '\0'; 121 stat = kcpc_pcbe_tryload(modname, 0, 0, 0); 122 if (stat == 0) 123 break; 124 } 125 if (q) 126 q++; /* skip over ':' */ 127 } 128 return (stat); 129 130 } 131 132 /*ARGSUSED*/ 133 static void 134 kcpc_remotestop_func(uint64_t arg1, uint64_t arg2) 135 { 136 ASSERT(CPU->cpu_cpc_ctx != NULL); 137 pcbe_ops->pcbe_allstop(); 138 atomic_or_uint(&CPU->cpu_cpc_ctx->kc_flags, KCPC_CTX_INVALID_STOPPED); 139 } 140 141 /* 142 * Ensure the counters are stopped on the given processor. 143 * 144 * Callers must ensure kernel preemption is disabled. 145 */ 146 void 147 kcpc_remote_stop(cpu_t *cp) 148 { 149 xc_one(cp->cpu_id, kcpc_remotestop_func, 0, 0); 150 } 151 152 /*ARGSUSED*/ 153 int 154 kcpc_hw_cpu_hook(processorid_t cpuid, ulong_t *kcpc_cpumap) 155 { 156 return (0); 157 } 158 159 int 160 kcpc_hw_lwp_hook(void) 161 { 162 return (0); 163 } 164 165 /*ARGSUSED*/ 166 static void 167 kcpc_remoteprogram_func(uint64_t arg1, uint64_t arg2) 168 { 169 ASSERT(CPU->cpu_cpc_ctx != NULL); 170 171 pcbe_ops->pcbe_program(CPU->cpu_cpc_ctx); 172 } 173 174 /* 175 * Ensure counters are enabled on the given processor. 176 */ 177 void 178 kcpc_remote_program(cpu_t *cp) 179 { 180 xc_one(cp->cpu_id, kcpc_remoteprogram_func, 0, 0); 181 } 182