+++ /dev/null
-/*!
- * \file
- * <!--
- * Copyright 2003, 2004 Develer S.r.l. (http://www.develer.com/)
- * Copyright 2000 Bernardo Innocenti <bernie@develer.com>
- * This file is part of DevLib - See devlib/README for information.
- * -->
- *
- * \version $Id$
- *
- * \author Bernardo Innocenti <bernie@develer.com>
- *
- * \brief Hardware independent timer driver (interface)
- */
-
-/*#*
- *#* $Log$
- *#* Revision 1.17 2004/11/16 22:37:14 bernie
- *#* Replace IPTR with iptr_t.
- *#*
- *#* Revision 1.16 2004/08/25 14:12:08 rasky
- *#* Aggiornato il comment block dei log RCS
- *#*
- *#* Revision 1.15 2004/08/10 06:59:09 bernie
- *#* timer_gettick(): Rename to timer_ticks() and add backwards compatibility inline.
- *#*
- *#* Revision 1.12 2004/07/30 14:34:10 rasky
- *#* Vari fix per documentazione e commenti
- *#* Aggiunte PP_CATn e STATIC_ASSERT
- *#*
- *#* Revision 1.11 2004/07/29 22:40:12 bernie
- *#* Spelling fix.
- *#*
- *#* Revision 1.10 2004/07/21 00:13:57 bernie
- *#* Put timer driver on diet.
- *#*
- *#* Revision 1.9 2004/07/20 23:45:01 bernie
- *#* Finally remove redundant protos.
- *#*
- *#* Revision 1.8 2004/07/18 21:57:32 bernie
- *#* timer_gettick(): Rename to timer_tick() and document better.
- *#*
- *#* Revision 1.7 2004/06/27 15:26:17 aleph
- *#* Declaration fix for build with GCC 3.4
- *#*
- *#* Revision 1.6 2004/06/07 18:10:06 aleph
- *#* Remove free pool of timers; use user-provided Timer structure instead
- *#*
- *#* Revision 1.5 2004/06/07 15:57:12 aleph
- *#* Add function prototypes
- *#*
- *#* Revision 1.4 2004/06/06 18:25:44 bernie
- *#* Rename event macros to look like regular functions.
- *#*
- *#* Revision 1.3 2004/06/06 16:57:18 bernie
- *#* Mark some functions INLINE instead of 'extern inline'.
- *#*
- *#* Revision 1.2 2004/06/03 11:27:09 bernie
- *#* Add dual-license information.
- *#*
- *#* Revision 1.1 2004/05/23 18:23:30 bernie
- *#* Import drv/timer module.
- *#*
- *#*/
-#ifndef DRV_TIMER_H
-#define DRV_TIMER_H
-
-#include "cpu.h"
-#include "compiler.h"
-#include <config.h>
-#include <mware/list.h>
-
-/*! Number of timer ticks per second. */
-#define TICKS_PER_SEC ((time_t)1000)
-
-/* Function protos */
-extern void timer_init(void);
-extern void timer_delay(time_t time);
-
-#ifndef CONFIG_TIMER_DISABLE_UDELAY
-extern void timer_udelay(utime_t utime);
-#endif
-
-
-#ifndef CONFIG_TIMER_DISABLE_EVENTS
-
-#ifdef CONFIG_KERNEL
- #include <kern/event.h>
-#else
- #include <mware/event.h>
-#endif
-
-/*!
- * The timer driver supports multiple synchronous timers
- * that can trigger an event when they expire.
- *
- * \sa timer_add()
- * \sa timer_abort()
- */
-typedef struct Timer
-{
- Node link; /*!< Link into timers queue */
- time_t delay; /*!< Timer delay in ms */
- time_t tick; /*!< Timer will expire at this tick */
- Event expire; /*!< Event to execute when the timer expires */
-} Timer;
-
-extern void timer_add(Timer *timer);
-extern Timer *timer_abort(Timer *timer);
-
-#if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
-
-/*! Set the timer so that it sends a signal when it expires */
-INLINE void timer_set_event_signal(Timer* timer, struct Process* proc, sigset_t sigs)
-{
- event_initSignal(&timer->expire, proc, sigs);
-}
-
-#endif /* CONFIG_KERN_SIGNALS */
-
-/*! Set the timer so that it calls an user hook when it expires */
-INLINE void timer_set_event_softint(Timer* timer, Hook func, void* user_data)
-{
- event_initSoftInt(&timer->expire, func, user_data);
-}
-
-/*! Set the timer delay (the time before the event will be triggered) */
-INLINE void timer_set_delay(Timer* timer, time_t delay)
-{
- timer->delay = delay;
-}
-
-#endif /* CONFIG_TIMER_DISABLE_EVENTS */
-
-extern volatile time_t _clock;
-
-/*!
- * \brief Return the system tick counter (expressed in ms)
- *
- * The result is guaranteed to increment monotonically,
- * but client code must be tolerant with respect to overflows.
- *
- * The following code is safe:
- *
- * \code
- * time_t tea_start_time = get_tick();
- *
- * boil_water();
- *
- * if (get_tick() - tea_start_time > TEAPOT_DELAY)
- * printf("Your tea, Sir.\n");
- * \endcode
- *
- * When the tick counter increments every millisecond and time_t
- * is 32bit wide, the tick count will overflow every 49.7 days.
- *
- * \note This function must disable interrupts on 8/16bit CPUs because the
- * clock variable is larger than the processor word size and can't
- * be copied atomically.
- */
-INLINE time_t timer_ticks(void)
-{
- time_t result;
- cpuflags_t flags;
-
- DISABLE_IRQSAVE(flags);
- result = _clock;
- ENABLE_IRQRESTORE(flags);
-
- return result;
-}
-
-
-/*!
- * Faster version of timer_ticks(), to be called only when the timer
- * interrupt is disabled (DISABLE_INTS) or overridden by a
- * higher-priority or non-nesting interrupt.
- *
- * \sa timer_ticks
- */
-INLINE time_t timer_ticks_unlocked(void)
-{
- return _clock;
-}
-
-
-/*!
- * Return the minutes passed since timer start.
- *
- * The uptime in minutes is computed directly from system tick counter.
- * This value wraps around every 71582 minutes with a 32bit time_t.
- */
-INLINE time_t timer_minutes(void)
-{
- return timer_ticks() / (TICKS_PER_SEC * 60);
-}
-
-#endif /* DRV_TIMER_H */
-
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