2 * Copyright 2006-2008 John Birrell <jb@FreeBSD.org>
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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.
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
29 static void enable(cyb_arg_t);
30 static void disable(cyb_arg_t);
31 static void reprogram(cyb_arg_t, hrtime_t);
32 static void xcall(cyb_arg_t, cpu_t *, cyc_func_t, void *);
33 static void cyclic_clock(struct trapframe *frame);
35 static cyc_backend_t be = {
36 NULL, /* cyb_configure */
37 NULL, /* cyb_unconfigure */
42 NULL /* cyb_arg_t cyb_arg */
46 cyclic_ap_start(void *dummy)
48 /* Initialise the rest of the CPUs. */
49 cyclic_clock_func = cyclic_clock;
53 SYSINIT(cyclic_ap_start, SI_SUB_SMP, SI_ORDER_ANY, cyclic_ap_start, NULL);
56 * Machine dependent cyclic subsystem initialisation.
59 cyclic_machdep_init(void)
61 /* Register the cyclic backend. */
66 cyclic_machdep_uninit(void)
68 /* De-register the cyclic backend. */
73 * This function is the one registered by the machine dependent
74 * initialiser as the callback for high speed timer events.
77 cyclic_clock(struct trapframe *frame)
79 cpu_t *c = &solaris_cpu[curcpu];
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);
86 c->cpu_profile_pc = TRAPF_PC(frame);
87 c->cpu_profile_upc = 0;
92 /* Fire any timers that are due. */
100 enable(cyb_arg_t arg __unused)
106 disable(cyb_arg_t arg __unused)
112 reprogram(cyb_arg_t arg __unused, hrtime_t exp)
117 ts.tv_sec = exp / 1000000000;
118 ts.tv_nsec = exp % 1000000000;
119 timespec2bintime(&ts, &bt);
120 clocksource_cyc_set(&bt);
123 static void xcall(cyb_arg_t arg __unused, cpu_t *c, cyc_func_t func,
128 CPU_SETOF(c->cpuid, &cpus);
129 smp_rendezvous_cpus(cpus,
130 smp_no_rendevous_barrier, func, smp_no_rendevous_barrier, param);