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/*********************************************************************
*
* Filename: timer.h
* Version:
* Description:
* Status: Experimental.
* Author: Dag Brattli <dagb@cs.uit.no>
* Created at: Sat Aug 16 00:59:29 1997
* Modified at: Thu Oct 7 12:25:24 1999
* Modified by: Dag Brattli <dagb@cs.uit.no>
*
* Copyright (c) 1997, 1998-1999 Dag Brattli <dagb@cs.uit.no>,
* All Rights Reserved.
* Copyright (c) 2000-2002 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.
*
********************************************************************/
#ifndef TIMER_H
#define TIMER_H
#include <linux/timer.h>
#include <linux/jiffies.h>
#include <asm/param.h> /* for HZ */
#include <net/irda/irda.h>
/* A few forward declarations (to make compiler happy) */
struct irlmp_cb;
struct irlap_cb;
struct lsap_cb;
struct lap_cb;
/*
* Timeout definitions, some defined in IrLAP 6.13.5 - p. 92
*/
#define POLL_TIMEOUT (450*HZ/1000) /* Must never exceed 500 ms */
#define FINAL_TIMEOUT (500*HZ/1000) /* Must never exceed 500 ms */
/*
* Normally twice of p-timer. Note 3, IrLAP 6.3.11.2 - p. 60 suggests
* at least twice duration of the P-timer.
*/
#define WD_TIMEOUT (POLL_TIMEOUT*2)
#define MEDIABUSY_TIMEOUT (500*HZ/1000) /* 500 msec */
#define SMALLBUSY_TIMEOUT (100*HZ/1000) /* 100 msec - IrLAP 6.13.4 */
/*
* Slot timer must never exceed 85 ms, and must always be at least 25 ms,
* suggested to 75-85 msec by IrDA lite. This doesn't work with a lot of
* devices, and other stackes uses a lot more, so it's best we do it as well
* (Note : this is the default value and sysctl overides it - Jean II)
*/
#define SLOT_TIMEOUT (90*HZ/1000)
/*
* The latest discovery frame (XID) is longer due to the extra discovery
* information (hints, device name...). This is its extra length.
* We use that when setting the query timeout. Jean II
*/
#define XIDEXTRA_TIMEOUT (34*HZ/1000) /* 34 msec */
#define WATCHDOG_TIMEOUT (20*HZ) /* 20 sec */
typedef void (*TIMER_CALLBACK)(void *);
static inline void irda_start_timer(struct timer_list *ptimer, int timeout,
void* data, TIMER_CALLBACK callback)
{
ptimer->function = (void (*)(unsigned long)) callback;
ptimer->data = (unsigned long) data;
/* Set new value for timer (update or add timer).
* We use mod_timer() because it's more efficient and also
* safer with respect to race conditions - Jean II */
mod_timer(ptimer, jiffies + timeout);
}
void irlap_start_slot_timer(struct irlap_cb *self, int timeout);
void irlap_start_query_timer(struct irlap_cb *self, int S, int s);
void irlap_start_final_timer(struct irlap_cb *self, int timeout);
void irlap_start_wd_timer(struct irlap_cb *self, int timeout);
void irlap_start_backoff_timer(struct irlap_cb *self, int timeout);
void irlap_start_mbusy_timer(struct irlap_cb *self, int timeout);
void irlap_stop_mbusy_timer(struct irlap_cb *);
void irlmp_start_watchdog_timer(struct lsap_cb *, int timeout);
void irlmp_start_discovery_timer(struct irlmp_cb *, int timeout);
void irlmp_start_idle_timer(struct lap_cb *, int timeout);
void irlmp_stop_idle_timer(struct lap_cb *self);
#endif