/**
* @file
*
* @ingroup rtems_bsd_rtems
*
* @brief TODO.
*/
/*
* Copyright (c) 2009, 2010 embedded brains GmbH.
* All rights reserved.
*
* embedded brains GmbH
* Obere Lagerstr. 30
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* 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 THE 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 THE 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.
*/
#include <freebsd/machine/rtems-bsd-config.h>
#include <freebsd/sys/param.h>
#include <freebsd/sys/types.h>
#include <freebsd/sys/systm.h>
#include <freebsd/sys/callout.h>
#include <freebsd/sys/lock.h>
#include <freebsd/sys/mutex.h>
RTEMS_CHAIN_DEFINE_EMPTY(rtems_bsd_callout_chain);
static void
rtems_bsd_callout_dispatch(rtems_id id, void *arg)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
struct callout *c = arg;
if (c->c_lock != NULL) {
sc = rtems_semaphore_obtain(c->c_lock->lo_id, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
BSD_ASSERT_SC(sc);
}
if (c->c_func != NULL) {
(*c->c_func)(c->c_arg);
}
if (c->c_lock != NULL && (c->c_flags & CALLOUT_RETURNUNLOCKED) == 0) {
sc = rtems_semaphore_release(c->c_lock->lo_id);
BSD_ASSERT_SC(sc);
}
}
void
callout_init(struct callout *c, int mpsafe)
{
_callout_init_lock(c, mpsafe ? NULL : &Giant.lock_object, mpsafe ? CALLOUT_RETURNUNLOCKED : 0);
}
void
_callout_init_lock(struct callout *c, struct lock_object *lock, int flags)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
rtems_id id = RTEMS_ID_NONE;
sc = rtems_timer_create(rtems_build_name('_', 'T', 'M', 'R'), &id);
BSD_ASSERT_SC(sc);
c->c_id = id;
c->c_lock = lock;
c->c_flags = flags;
c->c_func = NULL;
c->c_arg = NULL;
rtems_chain_append(&rtems_bsd_callout_chain, &c->c_node);
}
int
callout_reset(struct callout *c, int to_ticks, void (*ftn)(void *), void *arg)
{
/* FIXME: Integer conversions */
rtems_status_code sc = RTEMS_SUCCESSFUL;
if (to_ticks <= 0) {
to_ticks = 1;
}
c->c_func = ftn;
c->c_arg = arg;
sc = rtems_timer_server_fire_after(c->c_id, (rtems_interval) to_ticks, rtems_bsd_callout_dispatch, c);
BSD_ASSERT_SC(sc);
return 0;
}
int
callout_schedule(struct callout *c, int to_ticks)
{
return callout_reset(c, to_ticks, c->c_func, c->c_arg);
}
int
_callout_stop_safe(struct callout *c, int safe)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
if (!safe) {
sc = rtems_timer_cancel(c->c_id);
BSD_ASSERT_SC(sc);
} else {
sc = rtems_timer_delete(c->c_id);
BSD_ASSERT_SC(sc);
c->c_id = RTEMS_ID_NONE;
rtems_chain_extract(&c->c_node);
}
return 0;
}
