1/*- 2 * Copyright 2006-2008 John Birrell <jb@FreeBSD.org> 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 * 25 * $FreeBSD$ 26 * 27 */ 28 29static void enable(cyb_arg_t); 30static void disable(cyb_arg_t); 31static void reprogram(cyb_arg_t, hrtime_t); 32static void xcall(cyb_arg_t, cpu_t *, cyc_func_t, void *); 33static void cyclic_clock(struct trapframe *frame); 34 35static cyc_backend_t be = { 36 NULL, /* cyb_configure */ 37 NULL, /* cyb_unconfigure */ 38 enable, 39 disable, 40 reprogram, 41 xcall, 42 NULL /* cyb_arg_t cyb_arg */ 43}; 44 45static void 46cyclic_ap_start(void *dummy) 47{ 48 /* Initialise the rest of the CPUs. */ 49 cyclic_clock_func = cyclic_clock; 50 cyclic_mp_init(); 51} 52 53SYSINIT(cyclic_ap_start, SI_SUB_SMP, SI_ORDER_ANY, cyclic_ap_start, NULL); 54 55/* 56 * Machine dependent cyclic subsystem initialisation. 57 */ 58static void 59cyclic_machdep_init(void) 60{ 61 /* Register the cyclic backend. */ 62 cyclic_init(&be); 63} 64 65static void 66cyclic_machdep_uninit(void) 67{ 68 /* De-register the cyclic backend. */ 69 cyclic_uninit(); 70} 71 72/* 73 * This function is the one registered by the machine dependent 74 * initialiser as the callback for high speed timer events. 75 */ 76static void 77cyclic_clock(struct trapframe *frame) 78{ 79 cpu_t *c = &solaris_cpu[curcpu]; 80 81 if (c->cpu_cyclic != NULL) { 82 if (TRAPF_USERMODE(frame)) { 83 c->cpu_profile_pc = 0; 84 c->cpu_profile_upc = TRAPF_PC(frame); 85 } else { 86 c->cpu_profile_pc = TRAPF_PC(frame); 87 c->cpu_profile_upc = 0; 88 } 89 90 c->cpu_intr_actv = 1; 91 92 /* Fire any timers that are due. */ 93 cyclic_fire(c); 94 95 c->cpu_intr_actv = 0; 96 } 97} 98 99static void 100enable(cyb_arg_t arg __unused) 101{ 102 103} 104 105static void 106disable(cyb_arg_t arg __unused) 107{ 108 109} 110 111static void 112reprogram(cyb_arg_t arg __unused, hrtime_t exp) 113{ 114 struct bintime bt; 115 struct timespec ts; 116 117 ts.tv_sec = exp / 1000000000; 118 ts.tv_nsec = exp % 1000000000; 119 timespec2bintime(&ts, &bt); 120 clocksource_cyc_set(&bt); 121} 122 123static void xcall(cyb_arg_t arg __unused, cpu_t *c, cyc_func_t func, 124 void *param) 125{ 126 cpuset_t cpus; 127 128 CPU_SETOF(c->cpuid, &cpus); 129 smp_rendezvous_cpus(cpus, 130 smp_no_rendevous_barrier, func, smp_no_rendevous_barrier, param); 131} 132