1 /* $Id: fasttimer.c,v 1.11 2005/01/04 11:15:46 starvik Exp $
2 * linux/arch/cris/kernel/fasttimer.c
4 * Fast timers for ETRAX FS
5 * This may be useful in other OS than Linux so use 2 space indentation...
7 * $Log: fasttimer.c,v $
8 * Revision 1.11 2005/01/04 11:15:46 starvik
9 * Don't share timer IRQ.
11 * Revision 1.10 2004/12/07 09:19:38 starvik
13 * Use correct interrupt macros.
15 * Revision 1.9 2004/05/14 10:18:58 starvik
16 * Export fast_timer_list
18 * Revision 1.8 2004/05/14 07:58:03 starvik
19 * Merge of changes from 2.4
21 * Revision 1.7 2003/07/10 12:06:14 starvik
22 * Return IRQ_NONE if irq wasn't handled
24 * Revision 1.6 2003/07/04 08:27:49 starvik
25 * Merge of Linux 2.5.74
27 * Revision 1.5 2003/06/05 10:16:22 johana
28 * New INTR_VECT macros.
30 * Revision 1.4 2003/06/03 08:49:45 johana
33 * Revision 1.3 2003/06/02 12:51:27 johana
35 * Commented some include files that probably can be removed.
37 * Revision 1.2 2003/06/02 12:09:41 johana
38 * Ported to ETRAX FS using the trig interrupt instead of timer1.
40 * Revision 1.3 2002/12/12 08:26:32 starvik
41 * Don't use C-comments inside CVS comments
43 * Revision 1.2 2002/12/11 15:42:02 starvik
44 * Extracted v10 (ETRAX 100LX) specific stuff from arch/cris/kernel/
46 * Revision 1.1 2002/11/18 07:58:06 starvik
47 * Fast timers (from Linux 2.4)
49 * Revision 1.5 2002/10/15 06:21:39 starvik
50 * Added call to init_waitqueue_head
52 * Revision 1.4 2002/05/28 17:47:59 johana
53 * Added del_fast_timer()
55 * Revision 1.3 2002/05/28 16:16:07 johana
56 * Handle empty fast_timer_list
58 * Revision 1.2 2002/05/27 15:38:42 johana
59 * Made it compile without warnings on Linux 2.4.
60 * (includes, wait_queue, PROC_FS and snprintf)
62 * Revision 1.1 2002/05/27 15:32:25 johana
63 * arch/etrax100/kernel/fasttimer.c v1.8 from the elinux tree.
65 * Revision 1.8 2001/11/27 13:50:40 pkj
66 * Disable interrupts while stopping the timer and while modifying the
67 * list of active timers in timer1_handler() as it may be interrupted
68 * by other interrupts (e.g., the serial interrupt) which may add fast
71 * Revision 1.7 2001/11/22 11:50:32 pkj
72 * * Only store information about the last 16 timers.
73 * * proc_fasttimer_read() now uses an allocated buffer, since it
74 * requires more space than just a page even for only writing the
75 * last 16 timers. The buffer is only allocated on request, so
76 * unless /proc/fasttimer is read, it is never allocated.
77 * * Renamed fast_timer_started to fast_timers_started to match
78 * fast_timers_added and fast_timers_expired.
81 * Revision 1.6 2000/12/13 14:02:08 johana
82 * Removed volatile for fast_timer_list
84 * Revision 1.5 2000/12/13 13:55:35 johana
85 * Added DEBUG_LOG, added som cli() and cleanup
87 * Revision 1.4 2000/12/05 13:48:50 johana
88 * Added range check when writing proc file, modified timer int handling
90 * Revision 1.3 2000/11/23 10:10:20 johana
91 * More debug/logging possibilities.
92 * Moved GET_JIFFIES_USEC() to timex.h and time.c
94 * Revision 1.2 2000/11/01 13:41:04 johana
95 * Clean up and bugfixes.
96 * Created new do_gettimeofday_fast() that gets a timeval struct
97 * with time based on jiffies and *R_TIMER0_DATA, uses a table
98 * for fast conversion of timer value to microseconds.
99 * (Much faster the standard do_gettimeofday() and we don't really
100 * wan't to use the true time - we wan't the "uptime" so timers don't screw up
101 * when we change the time.
102 * TODO: Add efficient support for continuous timers as well.
104 * Revision 1.1 2000/10/26 15:49:16 johana
105 * Added fasttimer, highresolution timers.
107 * Copyright (C) 2000,2001 2002, 2003 Axis Communications AB, Lund, Sweden
110 #include <linux/errno.h>
111 #include <linux/sched.h>
112 #include <linux/kernel.h>
113 #include <linux/param.h>
114 #include <linux/string.h>
115 #include <linux/vmalloc.h>
116 #include <linux/interrupt.h>
117 #include <linux/time.h>
118 #include <linux/delay.h>
121 #include <asm/system.h>
123 #include <linux/version.h>
125 #include <asm/arch/hwregs/reg_map.h>
126 #include <asm/arch/hwregs/reg_rdwr.h>
127 #include <asm/arch/hwregs/timer_defs.h>
128 #include <asm/fasttimer.h>
129 #include <linux/proc_fs.h>
132 * timer0 is running at 100MHz and generating jiffies timer ticks
134 * fasttimer gives an API that gives timers that expire "between" the jiffies
135 * giving microsecond resolution (10 ns).
136 * fasttimer uses reg_timer_rw_trig register to get interrupt when
137 * r_time reaches a certain value.
141 #define DEBUG_LOG_INCLUDED
142 #define FAST_TIMER_LOG
143 //#define FAST_TIMER_TEST
145 #define FAST_TIMER_SANITY_CHECKS
147 #ifdef FAST_TIMER_SANITY_CHECKS
148 #define SANITYCHECK(x) x
149 static int sanity_failed = 0;
151 #define SANITYCHECK(x)
158 #define __INLINE__ inline
160 static int fast_timer_running = 0;
161 static int fast_timers_added = 0;
162 static int fast_timers_started = 0;
163 static int fast_timers_expired = 0;
164 static int fast_timers_deleted = 0;
165 static int fast_timer_is_init = 0;
166 static int fast_timer_ints = 0;
168 struct fast_timer *fast_timer_list = NULL;
170 #ifdef DEBUG_LOG_INCLUDED
171 #define DEBUG_LOG_MAX 128
172 static const char * debug_log_string[DEBUG_LOG_MAX];
173 static unsigned long debug_log_value[DEBUG_LOG_MAX];
174 static int debug_log_cnt = 0;
175 static int debug_log_cnt_wrapped = 0;
177 #define DEBUG_LOG(string, value) \
179 unsigned long log_flags; \
180 local_irq_save(log_flags); \
181 debug_log_string[debug_log_cnt] = (string); \
182 debug_log_value[debug_log_cnt] = (unsigned long)(value); \
183 if (++debug_log_cnt >= DEBUG_LOG_MAX) \
185 debug_log_cnt = debug_log_cnt % DEBUG_LOG_MAX; \
186 debug_log_cnt_wrapped = 1; \
188 local_irq_restore(log_flags); \
191 #define DEBUG_LOG(string, value)
195 #define NUM_TIMER_STATS 16
196 #ifdef FAST_TIMER_LOG
197 struct fast_timer timer_added_log[NUM_TIMER_STATS];
198 struct fast_timer timer_started_log[NUM_TIMER_STATS];
199 struct fast_timer timer_expired_log[NUM_TIMER_STATS];
202 int timer_div_settings[NUM_TIMER_STATS];
203 int timer_delay_settings[NUM_TIMER_STATS];
207 timer_trig_handler(void);
211 /* Not true gettimeofday, only checks the jiffies (uptime) + useconds */
212 void __INLINE__ do_gettimeofday_fast(struct timeval *tv)
214 unsigned long sec = jiffies;
215 unsigned long usec = GET_JIFFIES_USEC();
217 usec += (sec % HZ) * (1000000 / HZ);
229 int __INLINE__ timeval_cmp(struct timeval *t0, struct timeval *t1)
231 if (t0->tv_sec < t1->tv_sec)
235 else if (t0->tv_sec > t1->tv_sec)
239 if (t0->tv_usec < t1->tv_usec)
243 else if (t0->tv_usec > t1->tv_usec)
250 /* Called with ints off */
251 void __INLINE__ start_timer_trig(unsigned long delay_us)
253 reg_timer_rw_ack_intr ack_intr = { 0 };
254 reg_timer_rw_intr_mask intr_mask;
255 reg_timer_rw_trig trig;
256 reg_timer_rw_trig_cfg trig_cfg = { 0 };
257 reg_timer_r_time r_time;
259 r_time = REG_RD(timer, regi_timer, r_time);
261 D1(printk("start_timer_trig : %d us freq: %i div: %i\n",
262 delay_us, freq_index, div));
264 intr_mask = REG_RD(timer, regi_timer, rw_intr_mask);
266 REG_WR(timer, regi_timer, rw_intr_mask, intr_mask);
268 /* Set timer values */
269 /* r_time is 100MHz (10 ns resolution) */
270 trig = r_time + delay_us*(1000/10);
272 timer_div_settings[fast_timers_started % NUM_TIMER_STATS] = trig;
273 timer_delay_settings[fast_timers_started % NUM_TIMER_STATS] = delay_us;
277 REG_WR(timer, regi_timer, rw_ack_intr, ack_intr);
280 REG_WR(timer, regi_timer, rw_trig, trig);
281 trig_cfg.tmr = regk_timer_time;
282 REG_WR(timer, regi_timer, rw_trig_cfg, trig_cfg);
284 /* Check if we have already passed the trig time */
285 r_time = REG_RD(timer, regi_timer, r_time);
287 /* No, Enable trig irq */
288 intr_mask = REG_RD(timer, regi_timer, rw_intr_mask);
290 REG_WR(timer, regi_timer, rw_intr_mask, intr_mask);
291 fast_timers_started++;
292 fast_timer_running = 1;
296 /* We have passed the time, disable trig point, ack intr */
297 trig_cfg.tmr = regk_timer_off;
298 REG_WR(timer, regi_timer, rw_trig_cfg, trig_cfg);
299 REG_WR(timer, regi_timer, rw_ack_intr, ack_intr);
300 /* call the int routine directly */
301 timer_trig_handler();
306 /* In version 1.4 this function takes 27 - 50 us */
307 void start_one_shot_timer(struct fast_timer *t,
308 fast_timer_function_type *function,
310 unsigned long delay_us,
314 struct fast_timer *tmp;
316 D1(printk("sft %s %d us\n", name, delay_us));
318 local_irq_save(flags);
320 do_gettimeofday_fast(&t->tv_set);
321 tmp = fast_timer_list;
323 SANITYCHECK({ /* Check so this is not in the list already... */
328 printk("timer name: %s data: 0x%08lX already in list!\n", name, data);
337 tmp = fast_timer_list;
340 t->delay_us = delay_us;
341 t->function = function;
345 t->tv_expires.tv_usec = t->tv_set.tv_usec + delay_us % 1000000;
346 t->tv_expires.tv_sec = t->tv_set.tv_sec + delay_us / 1000000;
347 if (t->tv_expires.tv_usec > 1000000)
349 t->tv_expires.tv_usec -= 1000000;
350 t->tv_expires.tv_sec++;
352 #ifdef FAST_TIMER_LOG
353 timer_added_log[fast_timers_added % NUM_TIMER_STATS] = *t;
357 /* Check if this should timeout before anything else */
358 if (tmp == NULL || timeval_cmp(&t->tv_expires, &tmp->tv_expires) < 0)
360 /* Put first in list and modify the timer value */
362 t->next = fast_timer_list;
365 fast_timer_list->prev = t;
368 #ifdef FAST_TIMER_LOG
369 timer_started_log[fast_timers_started % NUM_TIMER_STATS] = *t;
371 start_timer_trig(delay_us);
373 /* Put in correct place in list */
375 timeval_cmp(&t->tv_expires, &tmp->next->tv_expires) > 0)
379 /* Insert t after tmp */
389 D2(printk("start_one_shot_timer: %d us done\n", delay_us));
391 local_irq_restore(flags);
392 } /* start_one_shot_timer */
394 static inline int fast_timer_pending (const struct fast_timer * t)
396 return (t->next != NULL) || (t->prev != NULL) || (t == fast_timer_list);
399 static inline int detach_fast_timer (struct fast_timer *t)
401 struct fast_timer *next, *prev;
402 if (!fast_timer_pending(t))
411 fast_timer_list = next;
412 fast_timers_deleted++;
416 int del_fast_timer(struct fast_timer * t)
421 local_irq_save(flags);
422 ret = detach_fast_timer(t);
423 t->next = t->prev = NULL;
424 local_irq_restore(flags);
426 } /* del_fast_timer */
429 /* Interrupt routines or functions called in interrupt context */
431 /* Timer interrupt handler for trig interrupts */
434 timer_trig_interrupt(int irq, void *dev_id, struct pt_regs *regs)
436 reg_timer_r_masked_intr masked_intr;
438 /* Check if the timer interrupt is for us (a trig int) */
439 masked_intr = REG_RD(timer, regi_timer, r_masked_intr);
440 if (!masked_intr.trig)
442 timer_trig_handler();
446 static void timer_trig_handler(void)
448 reg_timer_rw_ack_intr ack_intr = { 0 };
449 reg_timer_rw_intr_mask intr_mask;
450 reg_timer_rw_trig_cfg trig_cfg = { 0 };
451 struct fast_timer *t;
454 local_irq_save(flags);
456 /* Clear timer trig interrupt */
457 intr_mask = REG_RD(timer, regi_timer, rw_intr_mask);
459 REG_WR(timer, regi_timer, rw_intr_mask, intr_mask);
461 /* First stop timer, then ack interrupt */
463 trig_cfg.tmr = regk_timer_off;
464 REG_WR(timer, regi_timer, rw_trig_cfg, trig_cfg);
468 REG_WR(timer, regi_timer, rw_ack_intr, ack_intr);
470 fast_timer_running = 0;
473 local_irq_restore(flags);
480 /* Has it really expired? */
481 do_gettimeofday_fast(&tv);
482 D1(printk("t: %is %06ius\n", tv.tv_sec, tv.tv_usec));
484 if (timeval_cmp(&t->tv_expires, &tv) <= 0)
486 /* Yes it has expired */
487 #ifdef FAST_TIMER_LOG
488 timer_expired_log[fast_timers_expired % NUM_TIMER_STATS] = *t;
490 fast_timers_expired++;
492 /* Remove this timer before call, since it may reuse the timer */
493 local_irq_save(flags);
496 t->prev->next = t->next;
500 fast_timer_list = t->next;
504 t->next->prev = t->prev;
508 local_irq_restore(flags);
510 if (t->function != NULL)
512 t->function(t->data);
516 DEBUG_LOG("!trimertrig %i function==NULL!\n", fast_timer_ints);
521 /* Timer is to early, let's set it again using the normal routines */
525 local_irq_save(flags);
526 if ((t = fast_timer_list) != NULL)
528 /* Start next timer.. */
532 do_gettimeofday_fast(&tv);
533 us = ((t->tv_expires.tv_sec - tv.tv_sec) * 1000000 +
534 t->tv_expires.tv_usec - tv.tv_usec);
537 if (!fast_timer_running)
539 #ifdef FAST_TIMER_LOG
540 timer_started_log[fast_timers_started % NUM_TIMER_STATS] = *t;
542 start_timer_trig(us);
544 local_irq_restore(flags);
549 /* Timer already expired, let's handle it better late than never.
550 * The normal loop handles it
552 D1(printk("e! %d\n", us));
555 local_irq_restore(flags);
560 D1(printk("ttrig stop!\n"));
564 static void wake_up_func(unsigned long data)
566 #ifdef DECLARE_WAITQUEUE
567 wait_queue_head_t *sleep_wait_p = (wait_queue_head_t*)data;
569 struct wait_queue **sleep_wait_p = (struct wait_queue **)data;
571 wake_up(sleep_wait_p);
577 void schedule_usleep(unsigned long us)
580 #ifdef DECLARE_WAITQUEUE
581 wait_queue_head_t sleep_wait;
582 init_waitqueue_head(&sleep_wait);
584 DECLARE_WAITQUEUE(wait, current);
586 struct wait_queue *sleep_wait = NULL;
587 struct wait_queue wait = { current, NULL };
590 D1(printk("schedule_usleep(%d)\n", us));
591 add_wait_queue(&sleep_wait, &wait);
592 set_current_state(TASK_INTERRUPTIBLE);
593 start_one_shot_timer(&t, wake_up_func, (unsigned long)&sleep_wait, us,
596 set_current_state(TASK_RUNNING);
597 remove_wait_queue(&sleep_wait, &wait);
598 D1(printk("done schedule_usleep(%d)\n", us));
599 #ifdef DECLARE_WAITQUEUE
604 #ifdef CONFIG_PROC_FS
605 static int proc_fasttimer_read(char *buf, char **start, off_t offset, int len
606 ,int *eof, void *data_unused);
607 static struct proc_dir_entry *fasttimer_proc_entry;
608 #endif /* CONFIG_PROC_FS */
610 #ifdef CONFIG_PROC_FS
612 /* This value is very much based on testing */
613 #define BIG_BUF_SIZE (500 + NUM_TIMER_STATS * 300)
615 static int proc_fasttimer_read(char *buf, char **start, off_t offset, int len
616 ,int *eof, void *data_unused)
622 struct fast_timer *t, *nextt;
623 static char *bigbuf = NULL;
624 static unsigned long used;
626 if (!bigbuf && !(bigbuf = vmalloc(BIG_BUF_SIZE)))
633 if (!offset || !used)
635 do_gettimeofday_fast(&tv);
638 used += sprintf(bigbuf + used, "Fast timers added: %i\n",
640 used += sprintf(bigbuf + used, "Fast timers started: %i\n",
641 fast_timers_started);
642 used += sprintf(bigbuf + used, "Fast timer interrupts: %i\n",
644 used += sprintf(bigbuf + used, "Fast timers expired: %i\n",
645 fast_timers_expired);
646 used += sprintf(bigbuf + used, "Fast timers deleted: %i\n",
647 fast_timers_deleted);
648 used += sprintf(bigbuf + used, "Fast timer running: %s\n",
649 fast_timer_running ? "yes" : "no");
650 used += sprintf(bigbuf + used, "Current time: %lu.%06lu\n",
651 (unsigned long)tv.tv_sec,
652 (unsigned long)tv.tv_usec);
653 #ifdef FAST_TIMER_SANITY_CHECKS
654 used += sprintf(bigbuf + used, "Sanity failed: %i\n",
657 used += sprintf(bigbuf + used, "\n");
659 #ifdef DEBUG_LOG_INCLUDED
661 int end_i = debug_log_cnt;
664 if (debug_log_cnt_wrapped)
669 while ((i != end_i || (debug_log_cnt_wrapped && !used)) &&
670 used+100 < BIG_BUF_SIZE)
672 used += sprintf(bigbuf + used, debug_log_string[i],
674 i = (i+1) % DEBUG_LOG_MAX;
677 used += sprintf(bigbuf + used, "\n");
680 num_to_show = (fast_timers_started < NUM_TIMER_STATS ? fast_timers_started:
682 used += sprintf(bigbuf + used, "Timers started: %i\n", fast_timers_started);
683 for (i = 0; i < num_to_show && (used+100 < BIG_BUF_SIZE) ; i++)
685 int cur = (fast_timers_started - i - 1) % NUM_TIMER_STATS;
687 #if 1 //ndef FAST_TIMER_LOG
688 used += sprintf(bigbuf + used, "div: %i delay: %i"
690 timer_div_settings[cur],
691 timer_delay_settings[cur]
694 #ifdef FAST_TIMER_LOG
695 t = &timer_started_log[cur];
696 used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
697 "d: %6li us data: 0x%08lX"
700 (unsigned long)t->tv_set.tv_sec,
701 (unsigned long)t->tv_set.tv_usec,
702 (unsigned long)t->tv_expires.tv_sec,
703 (unsigned long)t->tv_expires.tv_usec,
709 used += sprintf(bigbuf + used, "\n");
711 #ifdef FAST_TIMER_LOG
712 num_to_show = (fast_timers_added < NUM_TIMER_STATS ? fast_timers_added:
714 used += sprintf(bigbuf + used, "Timers added: %i\n", fast_timers_added);
715 for (i = 0; i < num_to_show && (used+100 < BIG_BUF_SIZE); i++)
717 t = &timer_added_log[(fast_timers_added - i - 1) % NUM_TIMER_STATS];
718 used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
719 "d: %6li us data: 0x%08lX"
722 (unsigned long)t->tv_set.tv_sec,
723 (unsigned long)t->tv_set.tv_usec,
724 (unsigned long)t->tv_expires.tv_sec,
725 (unsigned long)t->tv_expires.tv_usec,
730 used += sprintf(bigbuf + used, "\n");
732 num_to_show = (fast_timers_expired < NUM_TIMER_STATS ? fast_timers_expired:
734 used += sprintf(bigbuf + used, "Timers expired: %i\n", fast_timers_expired);
735 for (i = 0; i < num_to_show && (used+100 < BIG_BUF_SIZE); i++)
737 t = &timer_expired_log[(fast_timers_expired - i - 1) % NUM_TIMER_STATS];
738 used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
739 "d: %6li us data: 0x%08lX"
742 (unsigned long)t->tv_set.tv_sec,
743 (unsigned long)t->tv_set.tv_usec,
744 (unsigned long)t->tv_expires.tv_sec,
745 (unsigned long)t->tv_expires.tv_usec,
750 used += sprintf(bigbuf + used, "\n");
753 used += sprintf(bigbuf + used, "Active timers:\n");
754 local_irq_save(flags);
755 local_irq_save(flags);
757 while (t != NULL && (used+100 < BIG_BUF_SIZE))
760 local_irq_restore(flags);
761 used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
762 "d: %6li us data: 0x%08lX"
763 /* " func: 0x%08lX" */
766 (unsigned long)t->tv_set.tv_sec,
767 (unsigned long)t->tv_set.tv_usec,
768 (unsigned long)t->tv_expires.tv_sec,
769 (unsigned long)t->tv_expires.tv_usec,
775 if (t->next != nextt)
777 printk("timer removed!\n");
781 local_irq_restore(flags);
784 if (used - offset < len)
789 memcpy(buf, bigbuf + offset, len);
797 #ifdef FAST_TIMER_TEST
798 static volatile unsigned long i = 0;
799 static volatile int num_test_timeout = 0;
800 static struct fast_timer tr[10];
801 static int exp_num[10];
803 static struct timeval tv_exp[100];
805 static void test_timeout(unsigned long data)
807 do_gettimeofday_fast(&tv_exp[data]);
808 exp_num[data] = num_test_timeout;
813 static void test_timeout1(unsigned long data)
815 do_gettimeofday_fast(&tv_exp[data]);
816 exp_num[data] = num_test_timeout;
819 start_one_shot_timer(&tr[i], test_timeout1, i, 1000, "timeout1");
826 static char buf0[2000];
827 static char buf1[2000];
828 static char buf2[2000];
829 static char buf3[2000];
830 static char buf4[2000];
833 static char buf5[6000];
834 static int j_u[1000];
836 static void fast_timer_test(void)
841 struct timeval tv, tv0, tv1, tv2;
843 printk("fast_timer_test() start\n");
844 do_gettimeofday_fast(&tv);
846 for (j = 0; j < 1000; j++)
848 j_u[j] = GET_JIFFIES_USEC();
850 for (j = 0; j < 100; j++)
852 do_gettimeofday_fast(&tv_exp[j]);
854 printk("fast_timer_test() %is %06i\n", tv.tv_sec, tv.tv_usec);
856 for (j = 0; j < 1000; j++)
858 printk("%i %i %i %i %i\n",j_u[j], j_u[j+1], j_u[j+2], j_u[j+3], j_u[j+4]);
861 for (j = 0; j < 100; j++)
863 printk("%i.%i %i.%i %i.%i %i.%i %i.%i\n",
864 tv_exp[j].tv_sec,tv_exp[j].tv_usec,
865 tv_exp[j+1].tv_sec,tv_exp[j+1].tv_usec,
866 tv_exp[j+2].tv_sec,tv_exp[j+2].tv_usec,
867 tv_exp[j+3].tv_sec,tv_exp[j+3].tv_usec,
868 tv_exp[j+4].tv_sec,tv_exp[j+4].tv_usec);
871 do_gettimeofday_fast(&tv0);
872 start_one_shot_timer(&tr[i], test_timeout, i, 50000, "test0");
873 DP(proc_fasttimer_read(buf0, NULL, 0, 0, 0));
875 start_one_shot_timer(&tr[i], test_timeout, i, 70000, "test1");
876 DP(proc_fasttimer_read(buf1, NULL, 0, 0, 0));
878 start_one_shot_timer(&tr[i], test_timeout, i, 40000, "test2");
879 DP(proc_fasttimer_read(buf2, NULL, 0, 0, 0));
881 start_one_shot_timer(&tr[i], test_timeout, i, 60000, "test3");
882 DP(proc_fasttimer_read(buf3, NULL, 0, 0, 0));
884 start_one_shot_timer(&tr[i], test_timeout1, i, 55000, "test4xx");
885 DP(proc_fasttimer_read(buf4, NULL, 0, 0, 0));
887 do_gettimeofday_fast(&tv1);
889 proc_fasttimer_read(buf5, NULL, 0, 0, 0);
891 prev_num = num_test_timeout;
892 while (num_test_timeout < i)
894 if (num_test_timeout != prev_num)
896 prev_num = num_test_timeout;
899 do_gettimeofday_fast(&tv2);
900 printk("Timers started %is %06i\n", tv0.tv_sec, tv0.tv_usec);
901 printk("Timers started at %is %06i\n", tv1.tv_sec, tv1.tv_usec);
902 printk("Timers done %is %06i\n", tv2.tv_sec, tv2.tv_usec);
903 DP(printk("buf0:\n");
917 printk("timers set:\n");
920 struct fast_timer *t = &tr[j];
921 printk("%-10s set: %6is %06ius exp: %6is %06ius "
922 "data: 0x%08X func: 0x%08X\n",
926 t->tv_expires.tv_sec,
927 t->tv_expires.tv_usec,
932 printk(" del: %6ius did exp: %6is %06ius as #%i error: %6li\n",
937 (tv_exp[j].tv_sec - t->tv_expires.tv_sec)*1000000 + tv_exp[j].tv_usec - t->tv_expires.tv_usec);
939 proc_fasttimer_read(buf5, NULL, 0, 0, 0);
940 printk("buf5 after all done:\n");
942 printk("fast_timer_test() done\n");
947 void fast_timer_init(void)
949 /* For some reason, request_irq() hangs when called froom time_init() */
950 if (!fast_timer_is_init)
952 printk("fast_timer_init()\n");
954 #ifdef CONFIG_PROC_FS
955 if ((fasttimer_proc_entry = create_proc_entry( "fasttimer", 0, 0 )))
956 fasttimer_proc_entry->read_proc = proc_fasttimer_read;
958 if(request_irq(TIMER_INTR_VECT, timer_trig_interrupt, IRQF_DISABLED,
959 "fast timer int", NULL))
961 printk("err: timer1 irq\n");
963 fast_timer_is_init = 1;
964 #ifdef FAST_TIMER_TEST