/********************************************************************* * * Filename: timer.h * Version: * Description: * Status: Experimental. * Author: Dag Brattli * Created at: Sat Aug 16 00:59:29 1997 * Modified at: Thu Oct 7 12:25:24 1999 * Modified by: Dag Brattli * * Copyright (c) 1997, 1998-1999 Dag Brattli , * All Rights Reserved. * Copyright (c) 2000-2002 Jean Tourrilhes * * 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 #include #include /* for HZ */ #include /* 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 overrides 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