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Diffstat (limited to 'include/net/irda/timer.h')
| -rw-r--r-- | include/net/irda/timer.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/include/net/irda/timer.h b/include/net/irda/timer.h new file mode 100644 index 000000000..cb2615ccf --- /dev/null +++ b/include/net/irda/timer.h @@ -0,0 +1,105 @@ +/********************************************************************* + * + * 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 + |