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/*********************************************************************

 *

 * Filename:      timer.c

 * Version:

 * Description:

 * Status:        Experimental.

 * Author:        Dag Brattli <dagb@cs.uit.no>

 * Created at:    Sat Aug 16 00:59:29 1997

 * Modified at:   Wed Dec  8 12:50:34 1999

 * Modified by:   Dag Brattli <dagb@cs.uit.no>

 *

 *     Copyright (c) 1997, 1999 Dag Brattli <dagb@cs.uit.no>,

 *     All Rights Reserved.

 *     Copyright (c) 2000-2001 Jean Tourrilhes <jt@hpl.hp.com>

 *

 *     This program is free software; you can redistribute it and/or

 *     modify it under the terms of the GNU General Public License as

 *     published by the Free Software Foundation; either version 2 of

 *     the License, or (at your option) any later version.

 *

 *     Neither Dag Brattli nor University of Tromsø admit liability nor

 *     provide warranty for any of this software. This material is

 *     provided "AS-IS" and at no charge.

 *

 ********************************************************************/

#include <asm/system.h>

#include <linux/config.h>

#include <linux/delay.h>

#include <net/irda/timer.h>

#include <net/irda/irda.h>

#include <net/irda/irtty.h>

#include <net/irda/irlap.h>

#include <net/irda/irlmp_event.h>

static void irlap_slot_timer_expired(void* data);

static void irlap_query_timer_expired(void* data);

static void irlap_final_timer_expired(void* data);

static void irlap_wd_timer_expired(void* data);

static void irlap_backoff_timer_expired(void* data);

static void irlap_media_busy_expired(void* data);

/*

 * Function irda_start_timer (timer, timeout)

 *

 *    Start an IrDA timer

 *

 */

void irda_start_timer(struct timer_list *ptimer, int timeout, void *data,

                      TIMER_CALLBACK callback)

{

        del_timer(ptimer);

        ptimer->data = (unsigned long) data;

        /*

         * For most architectures void * is the same as unsigned long, but

         * at least we try to use void * as long as possible. Since the

         * timer functions use unsigned long, we cast the function here

         */

        ptimer->function = (void (*)(unsigned long)) callback;

        ptimer->expires = jiffies + timeout;

        add_timer(ptimer);

}

void irlap_start_slot_timer(struct irlap_cb *self, int timeout)

{

        irda_start_timer(&self->slot_timer, timeout, (void *) self,

                         irlap_slot_timer_expired);

}

void irlap_start_query_timer(struct irlap_cb *self, int timeout)

{

        irda_start_timer( &self->query_timer, timeout, (void *) self,

                          irlap_query_timer_expired);

}

void irlap_start_final_timer(struct irlap_cb *self, int timeout)

{

        irda_start_timer(&self->final_timer, timeout, (void *) self,

                         irlap_final_timer_expired);

}

void irlap_start_wd_timer(struct irlap_cb *self, int timeout)

{

        irda_start_timer(&self->wd_timer, timeout, (void *) self,

                         irlap_wd_timer_expired);

}

void irlap_start_backoff_timer(struct irlap_cb *self, int timeout)

{

        irda_start_timer(&self->backoff_timer, timeout, (void *) self,

                         irlap_backoff_timer_expired);

}

void irlap_start_mbusy_timer(struct irlap_cb *self, int timeout)

{

        irda_start_timer(&self->media_busy_timer, timeout,

                         (void *) self, irlap_media_busy_expired);

}

void irlap_stop_mbusy_timer(struct irlap_cb *self)

{

        /* If timer is activated, kill it! */

        del_timer(&self->media_busy_timer);

        /* If we are in NDM, there is a bunch of events in LAP that

         * that be pending due to the media_busy condition, such as

         * CONNECT_REQUEST and SEND_UI_FRAME. If we don't generate

         * an event, they will wait forever...

         * Jean II */

        if (self->state == LAP_NDM)

                irlap_do_event(self, MEDIA_BUSY_TIMER_EXPIRED, NULL, NULL);

}

void irlmp_start_watchdog_timer(struct lsap_cb *self, int timeout)

{

        irda_start_timer(&self->watchdog_timer, timeout, (void *) self,

                         irlmp_watchdog_timer_expired);

}

void irlmp_start_discovery_timer(struct irlmp_cb *self, int timeout)

{

        irda_start_timer(&self->discovery_timer, timeout, (void *) self,

                         irlmp_discovery_timer_expired);

}

void irlmp_start_idle_timer(struct lap_cb *self, int timeout)

{

        irda_start_timer(&self->idle_timer, timeout, (void *) self,

                         irlmp_idle_timer_expired);

}

void irlmp_stop_idle_timer(struct lap_cb *self)

{

        /* If timer is activated, kill it! */

        if(timer_pending(&self->idle_timer))

                del_timer(&self->idle_timer);

}

/*

 * Function irlap_slot_timer_expired (data)

 *

 *    IrLAP slot timer has expired

 *

 */

static void irlap_slot_timer_expired(void *data)

{

        struct irlap_cb *self = (struct irlap_cb *) data;

        ASSERT(self != NULL, return;);

        ASSERT(self->magic == LAP_MAGIC, return;);

        irlap_do_event(self, SLOT_TIMER_EXPIRED, NULL, NULL);

}

/*

 * Function irlap_query_timer_expired (data)

 *

 *    IrLAP query timer has expired

 *

 */

static void irlap_query_timer_expired(void *data)

{

        struct irlap_cb *self = (struct irlap_cb *) data;

        ASSERT(self != NULL, return;);

        ASSERT(self->magic == LAP_MAGIC, return;);

        irlap_do_event(self, QUERY_TIMER_EXPIRED, NULL, NULL);

}

/*

 * Function irda_final_timer_expired (data)

 *

 *

 *

 */

static void irlap_final_timer_expired(void *data)

{

        struct irlap_cb *self = (struct irlap_cb *) data;

        ASSERT(self != NULL, return;);

        ASSERT(self->magic == LAP_MAGIC, return;);

        irlap_do_event(self, FINAL_TIMER_EXPIRED, NULL, NULL);

}

/*

 * Function irda_wd_timer_expired (data)

 *

 *

 *

 */

static void irlap_wd_timer_expired(void *data)

{

        struct irlap_cb *self = (struct irlap_cb *) data;

        ASSERT(self != NULL, return;);

        ASSERT(self->magic == LAP_MAGIC, return;);

        irlap_do_event(self, WD_TIMER_EXPIRED, NULL, NULL);

}

/*

 * Function irda_backoff_timer_expired (data)

 *

 *

 *

 */

static void irlap_backoff_timer_expired(void *data)

{

        struct irlap_cb *self = (struct irlap_cb *) data;

        ASSERT(self != NULL, return;);

        ASSERT(self->magic == LAP_MAGIC, return;);

        irlap_do_event(self, BACKOFF_TIMER_EXPIRED, NULL, NULL);

}

/*

 * Function irtty_media_busy_expired (data)

 *

 *

 */

void irlap_media_busy_expired(void* data)

{

        struct irlap_cb *self = (struct irlap_cb *) data;

        ASSERT(self != NULL, return;);

        irda_device_set_media_busy(self->netdev, FALSE);

        /* Note : the LAP event will be send in irlap_stop_mbusy_timer(),

        * to catch other cases where the flag is cleared (for example

        * after a discovery) - Jean II */

}