5a3c3bfaa3
OpenSolaris. We don't have the lock levels that they do, so this is just hooked into clock interrupts.
134 lines
3.5 KiB
C
134 lines
3.5 KiB
C
/*-
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* Copyright 2006-2008 John Birrell <jb@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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static void enable(cyb_arg_t);
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static void disable(cyb_arg_t);
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static void reprogram(cyb_arg_t, hrtime_t);
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static void xcall(cyb_arg_t, cpu_t *, cyc_func_t, void *);
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static cyc_backend_t be = {
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NULL, /* cyb_configure */
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NULL, /* cyb_unconfigure */
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enable,
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disable,
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reprogram,
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xcall,
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NULL /* cyb_arg_t cyb_arg */
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};
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static void
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cyclic_ap_start(void *dummy)
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{
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/* Initialise the rest of the CPUs. */
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cyclic_mp_init();
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}
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SYSINIT(cyclic_ap_start, SI_SUB_SMP, SI_ORDER_ANY, cyclic_ap_start, NULL);
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/*
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* Machine dependent cyclic subsystem initialisation.
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*/
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static void
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cyclic_machdep_init(void)
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{
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/* Register the cyclic backend. */
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cyclic_init(&be);
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}
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static void
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cyclic_machdep_uninit(void)
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{
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int i;
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for (i = 0; i <= mp_maxid; i++)
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/* Reset the cyclic clock callback hook. */
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lapic_cyclic_clock_func[i] = NULL;
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/* De-register the cyclic backend. */
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cyclic_uninit();
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}
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static hrtime_t exp_due[MAXCPU];
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/*
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* This function is the one registered by the machine dependent
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* initialiser as the callback for high speed timer events.
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*/
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static void
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cyclic_clock(struct trapframe *frame)
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{
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cpu_t *c = &solaris_cpu[curcpu];
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if (c->cpu_cyclic != NULL && gethrtime() >= exp_due[curcpu]) {
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if (TRAPF_USERMODE(frame)) {
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c->cpu_profile_pc = 0;
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c->cpu_profile_upc = TRAPF_PC(frame);
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} else {
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c->cpu_profile_pc = TRAPF_PC(frame);
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c->cpu_profile_upc = 0;
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}
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c->cpu_intr_actv = 1;
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/* Fire any timers that are due. */
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cyclic_fire(c);
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c->cpu_intr_actv = 0;
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}
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}
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static void enable(cyb_arg_t arg)
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{
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/* Register the cyclic clock callback function. */
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lapic_cyclic_clock_func[curcpu] = cyclic_clock;
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}
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static void disable(cyb_arg_t arg)
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{
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/* Reset the cyclic clock callback function. */
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lapic_cyclic_clock_func[curcpu] = NULL;
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}
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static void reprogram(cyb_arg_t arg, hrtime_t exp)
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{
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exp_due[curcpu] = exp;
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}
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static void xcall(cyb_arg_t arg, cpu_t *c, cyc_func_t func, void *param)
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{
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/*
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* If the target CPU is the current one, just call the
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* function. This covers the non-SMP case.
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*/
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if (c == &solaris_cpu[curcpu])
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(*func)(param);
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else
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smp_rendezvous_cpus((cpumask_t) (1 << c->cpuid), NULL,
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func, smp_no_rendevous_barrier, param);
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}
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