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 #include <sys/kcpc.h> 49 50 uint64_t cpc_level15_inum; /* used in interrupt.s */ 51 int cpc_has_overflow_intr; /* set in cheetah.c */ 52 53 extern kcpc_ctx_t *kcpc_overflow_intr(caddr_t arg, uint64_t bitmap); 54 extern int kcpc_counts_include_idle; 55 56 /* 57 * Called on the boot CPU during startup. 58 */ 59 void 60 kcpc_hw_init(void) 61 { 62 if (cpc_has_overflow_intr) { 63 cpc_level15_inum = add_softintr(PIL_15, 64 kcpc_hw_overflow_intr, NULL, SOFTINT_MT); 65 } 66 67 /* 68 * Make sure the boot CPU gets set up. 69 */ 70 kcpc_hw_startup_cpu(CPU->cpu_flags); 71 } 72 73 /* 74 * Prepare for CPC interrupts and install an idle thread CPC context. 75 */ 76 void 77 kcpc_hw_startup_cpu(ushort_t cpflags) 78 { 79 cpu_t *cp = CPU; 80 kthread_t *t = cp->cpu_idle_thread; 81 82 ASSERT(t->t_bound_cpu == cp); 83 84 if (cpc_has_overflow_intr && (cpflags & CPU_FROZEN) == 0) { 85 int pstate_save = disable_vec_intr(); 86 87 ASSERT(cpc_level15_inum != 0); 88 89 intr_enqueue_req(PIL_15, cpc_level15_inum); 90 enable_vec_intr(pstate_save); 91 } 92 93 mutex_init(&cp->cpu_cpc_ctxlock, "cpu_cpc_ctxlock", MUTEX_DEFAULT, 0); 94 95 if (kcpc_counts_include_idle) 96 return; 97 98 installctx(t, cp, kcpc_idle_save, kcpc_idle_restore, NULL, NULL, 99 NULL, NULL); 100 } 101 102 /* 103 * Examine the processor and load an appropriate PCBE. 104 */ 105 int 106 kcpc_hw_load_pcbe(void) 107 { 108 uint64_t ver = ultra_getver(); 109 110 return (kcpc_pcbe_tryload(NULL, ULTRA_VER_MANUF(ver), 111 ULTRA_VER_IMPL(ver), ULTRA_VER_MASK(ver))); 112 } 113 114 /*ARGSUSED*/ 115 int 116 kcpc_hw_cpu_hook(processorid_t cpuid, ulong_t *kcpc_cpumap) 117 { 118 return (0); 119 } 120 121 int 122 kcpc_hw_lwp_hook(void) 123 { 124 return (0); 125 } 126