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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 /* 26 * sun4u common CPC subroutines. 27 */ 28 29 #include <sys/types.h> 30 #include <sys/time.h> 31 #include <sys/atomic.h> 32 #include <sys/thread.h> 33 #include <sys/regset.h> 34 #include <sys/archsystm.h> 35 #include <sys/machsystm.h> 36 #include <sys/cpc_impl.h> 37 #include <sys/cpc_ultra.h> 38 #include <sys/sunddi.h> 39 #include <sys/intr.h> 40 #include <sys/ivintr.h> 41 #include <sys/x_call.h> 42 #include <sys/cpuvar.h> 43 #include <sys/machcpuvar.h> 44 #include <sys/cpc_pcbe.h> 45 #include <sys/modctl.h> 46 #include <sys/sdt.h> 47 48 uint64_t cpc_level15_inum = 0; /* used in interrupt.s */ 49 int cpc_has_overflow_intr; /* set in cheetah.c */ 50 51 extern kcpc_ctx_t *kcpc_overflow_intr(caddr_t arg, uint64_t bitmap); 52 extern int kcpc_counts_include_idle; 53 54 /* 55 * Called on the boot CPU during startup. 56 */ 57 void 58 kcpc_hw_init(void) 59 { 60 if ((cpc_has_overflow_intr) && (cpc_level15_inum == 0)) { 61 cpc_level15_inum = add_softintr(PIL_15, 62 kcpc_hw_overflow_intr, NULL, SOFTINT_MT); 63 } 64 65 /* 66 * Make sure the boot CPU gets set up. 67 */ 68 kcpc_hw_startup_cpu(CPU->cpu_flags); 69 } 70 71 /* 72 * Prepare for CPC interrupts and install an idle thread CPC context. 73 */ 74 void 75 kcpc_hw_startup_cpu(ushort_t cpflags) 76 { 77 cpu_t *cp = CPU; 78 kthread_t *t = cp->cpu_idle_thread; 79 80 ASSERT(t->t_bound_cpu == cp); 81 82 if (cpc_has_overflow_intr && (cpflags & CPU_FROZEN) == 0) { 83 int pstate_save = disable_vec_intr(); 84 85 ASSERT(cpc_level15_inum != 0); 86 87 intr_enqueue_req(PIL_15, cpc_level15_inum); 88 enable_vec_intr(pstate_save); 89 } 90 91 mutex_init(&cp->cpu_cpc_ctxlock, "cpu_cpc_ctxlock", MUTEX_DEFAULT, 0); 92 93 if (kcpc_counts_include_idle) 94 return; 95 96 installctx(t, cp, kcpc_idle_save, kcpc_idle_restore, NULL, NULL, 97 NULL, NULL); 98 } 99 100 /* 101 * Examine the processor and load an appropriate PCBE. 102 */ 103 int 104 kcpc_hw_load_pcbe(void) 105 { 106 char modname[MODMAXNAMELEN+1]; 107 char *p, *q; 108 int len, stat; 109 extern char *boot_cpu_compatible_list; 110 111 for (stat = -1, p = boot_cpu_compatible_list; p != NULL; p = q) { 112 /* 113 * Get next CPU module name from boot_cpu_compatible_list 114 */ 115 q = strchr(p, ':'); 116 len = (q) ? (q - p) : strlen(p); 117 if (len < sizeof (modname)) { 118 (void) strncpy(modname, p, len); 119 modname[len] = '\0'; 120 stat = kcpc_pcbe_tryload(modname, 0, 0, 0); 121 if (stat == 0) 122 break; 123 } 124 if (q) 125 q++; /* skip over ':' */ 126 } 127 return (stat); 128 129 } 130 131 /*ARGSUSED*/ 132 int 133 kcpc_hw_cpu_hook(processorid_t cpuid, ulong_t *kcpc_cpumap) 134 { 135 return (0); 136 } 137 138 int 139 kcpc_hw_lwp_hook(void) 140 { 141 return (0); 142 } 143