[src/trunk]: src/external/cddl/osnet/dev/cyclic/mips Add cyclic_machdep.c for...

[simonb <simonb%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/01306500e02c
branches:  trunk
changeset: 954108:01306500e02c
user:      simonb <simonb%NetBSD.org@localhost>
date:      Mon Mar 29 03:27:38 2021 +0000

description:
Add cyclic_machdep.c for MIPS

The code is identical to i386's one.

diffstat:

 external/cddl/osnet/dev/cyclic/mips/cyclic_machdep.c |  148 +++++++++++++++++++
 1 files changed, 148 insertions(+), 0 deletions(-)

diffs (152 lines):

diff -r ed53cde33b1e -r 01306500e02c external/cddl/osnet/dev/cyclic/mips/cyclic_machdep.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/external/cddl/osnet/dev/cyclic/mips/cyclic_machdep.c      Mon Mar 29 03:27:38 2021 +0000
@@ -0,0 +1,148 @@
+/*     $NetBSD: cyclic_machdep.c,v 1.1 2021/03/29 03:27:38 simonb Exp $        */
+
+/*-
+ * Copyright 2006-2008 John Birrell <jb%FreeBSD.org@localhost>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: head/sys/cddl/dev/cyclic/i386/cyclic_machdep.c 222813 2011-06-07 08:46:13Z attilio $
+ *
+ */
+
+static void enable(cyb_arg_t);
+static void disable(cyb_arg_t);
+static void reprogram(cyb_arg_t, hrtime_t);
+static void xcall(cyb_arg_t, cpu_t *, cyc_func_t, void *);
+
+static cyc_backend_t   be      = {
+       NULL,           /* cyb_configure */
+       NULL,           /* cyb_unconfigure */
+       enable,
+       disable,
+       reprogram,
+       xcall,
+       NULL            /* cyb_arg_t cyb_arg */
+};
+
+static void
+cyclic_ap_start(void *dummy)
+{
+       /* Initialise the rest of the CPUs. */
+       cyclic_mp_init();
+}
+
+SYSINIT(cyclic_ap_start, SI_SUB_SMP, SI_ORDER_ANY, cyclic_ap_start, NULL);
+
+/*
+ *  Machine dependent cyclic subsystem initialisation.
+ */
+static void
+cyclic_machdep_init(void)
+{
+       /* Register the cyclic backend. */
+       cyclic_init(&be);
+#ifdef __NetBSD__
+       cyclic_ap_start(NULL);
+#endif
+}
+
+static void
+cyclic_machdep_uninit(void)
+{
+       int i;
+
+       for (i = 0; i <= mp_maxid; i++)
+               /* Reset the cyclic clock callback hook. */
+               cyclic_clock_func[i] = NULL;
+
+       /* De-register the cyclic backend. */
+       cyclic_uninit();
+}
+
+static hrtime_t exp_due[MAXCPU];
+
+/*
+ * This function is the one registered by the machine dependent
+ * initialiser as the callback for high speed timer events.
+ */
+static void
+cyclic_clock(struct clockframe *frame)
+{
+       cpu_t *c = &solaris_cpu[cpu_number()];
+
+       if (c->cpu_cyclic != NULL && gethrtime() >= exp_due[cpu_number()]) {
+               if (TRAPF_USERMODE(frame)) {
+                       c->cpu_profile_pc = 0;
+                       c->cpu_profile_upc = TRAPF_PC(frame);
+               } else {
+                       c->cpu_profile_pc = TRAPF_PC(frame);
+                       c->cpu_profile_upc = 0;
+               }
+
+               c->cpu_intr_actv = 1;
+
+               /* Fire any timers that are due. */
+               cyclic_fire(c);
+
+               c->cpu_intr_actv = 0;
+       }
+}
+
+static void enable(cyb_arg_t arg)
+{
+       /* Register the cyclic clock callback function. */
+       cyclic_clock_func[cpu_number()] = cyclic_clock;
+}
+
+static void disable(cyb_arg_t arg)
+{
+       /* Reset the cyclic clock callback function. */
+       cyclic_clock_func[cpu_number()] = NULL;
+}
+
+static void reprogram(cyb_arg_t arg, hrtime_t exp)
+{
+       exp_due[cpu_number()] = exp;
+}
+
+#ifdef __NetBSD__
+static void xcall_func(void *arg0, void *arg1)
+{
+       cyc_func_t func;
+
+       func = arg0;
+       (*func)(arg1);
+}
+#endif
+
+static void xcall(cyb_arg_t arg, cpu_t *c, cyc_func_t func, void *param)
+{
+#ifdef __NetBSD__
+       uint64_t xc;
+
+       xc = xc_unicast(XC_HIGHPRI, xcall_func, func, param, cpu_lookup(c->cpuid));
+       xc_wait(xc);
+#else
+       smp_rendezvous_cpus((cpumask_t) (1 << c->cpuid),
+           smp_no_rendevous_barrier, func, smp_no_rendevous_barrier, param);
+#endif
+}