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/config.h>
124 #include <linux/version.h>
126 #include <asm/arch/hwregs/reg_map.h>
127 #include <asm/arch/hwregs/reg_rdwr.h>
128 #include <asm/arch/hwregs/timer_defs.h>
129 #include <asm/fasttimer.h>
130 #include <linux/proc_fs.h>
133 * timer0 is running at 100MHz and generating jiffies timer ticks
135 * fasttimer gives an API that gives timers that expire "between" the jiffies
136 * giving microsecond resolution (10 ns).
137 * fasttimer uses reg_timer_rw_trig register to get interrupt when
138 * r_time reaches a certain value.
142 #define DEBUG_LOG_INCLUDED
143 #define FAST_TIMER_LOG
144 //#define FAST_TIMER_TEST
146 #define FAST_TIMER_SANITY_CHECKS
148 #ifdef FAST_TIMER_SANITY_CHECKS
149 #define SANITYCHECK(x) x
150 static int sanity_failed = 0;
152 #define SANITYCHECK(x)
159 #define __INLINE__ inline
161 static int fast_timer_running = 0;
162 static int fast_timers_added = 0;
163 static int fast_timers_started = 0;
164 static int fast_timers_expired = 0;
165 static int fast_timers_deleted = 0;
166 static int fast_timer_is_init = 0;
167 static int fast_timer_ints = 0;
169 struct fast_timer *fast_timer_list = NULL;
171 #ifdef DEBUG_LOG_INCLUDED
172 #define DEBUG_LOG_MAX 128
173 static const char * debug_log_string[DEBUG_LOG_MAX];
174 static unsigned long debug_log_value[DEBUG_LOG_MAX];
175 static int debug_log_cnt = 0;
176 static int debug_log_cnt_wrapped = 0;
178 #define DEBUG_LOG(string, value) \
180 unsigned long log_flags; \
181 local_irq_save(log_flags); \
182 debug_log_string[debug_log_cnt] = (string); \
183 debug_log_value[debug_log_cnt] = (unsigned long)(value); \
184 if (++debug_log_cnt >= DEBUG_LOG_MAX) \
186 debug_log_cnt = debug_log_cnt % DEBUG_LOG_MAX; \
187 debug_log_cnt_wrapped = 1; \
189 local_irq_restore(log_flags); \
192 #define DEBUG_LOG(string, value)
196 #define NUM_TIMER_STATS 16
197 #ifdef FAST_TIMER_LOG
198 struct fast_timer timer_added_log[NUM_TIMER_STATS];
199 struct fast_timer timer_started_log[NUM_TIMER_STATS];
200 struct fast_timer timer_expired_log[NUM_TIMER_STATS];
203 int timer_div_settings[NUM_TIMER_STATS];
204 int timer_delay_settings[NUM_TIMER_STATS];
208 timer_trig_handler(void);
212 /* Not true gettimeofday, only checks the jiffies (uptime) + useconds */
213 void __INLINE__ do_gettimeofday_fast(struct timeval *tv)
215 unsigned long sec = jiffies;
216 unsigned long usec = GET_JIFFIES_USEC();
218 usec += (sec % HZ) * (1000000 / HZ);
230 int __INLINE__ timeval_cmp(struct timeval *t0, struct timeval *t1)
232 if (t0->tv_sec < t1->tv_sec)
236 else if (t0->tv_sec > t1->tv_sec)
240 if (t0->tv_usec < t1->tv_usec)
244 else if (t0->tv_usec > t1->tv_usec)
251 /* Called with ints off */
252 void __INLINE__ start_timer_trig(unsigned long delay_us)
254 reg_timer_rw_ack_intr ack_intr = { 0 };
255 reg_timer_rw_intr_mask intr_mask;
256 reg_timer_rw_trig trig;
257 reg_timer_rw_trig_cfg trig_cfg = { 0 };
258 reg_timer_r_time r_time;
260 r_time = REG_RD(timer, regi_timer, r_time);
262 D1(printk("start_timer_trig : %d us freq: %i div: %i\n",
263 delay_us, freq_index, div));
265 intr_mask = REG_RD(timer, regi_timer, rw_intr_mask);
267 REG_WR(timer, regi_timer, rw_intr_mask, intr_mask);
269 /* Set timer values */
270 /* r_time is 100MHz (10 ns resolution) */
271 trig = r_time + delay_us*(1000/10);
273 timer_div_settings[fast_timers_started % NUM_TIMER_STATS] = trig;
274 timer_delay_settings[fast_timers_started % NUM_TIMER_STATS] = delay_us;
278 REG_WR(timer, regi_timer, rw_ack_intr, ack_intr);
281 REG_WR(timer, regi_timer, rw_trig, trig);
282 trig_cfg.tmr = regk_timer_time;
283 REG_WR(timer, regi_timer, rw_trig_cfg, trig_cfg);
285 /* Check if we have already passed the trig time */
286 r_time = REG_RD(timer, regi_timer, r_time);
288 /* No, Enable trig irq */
289 intr_mask = REG_RD(timer, regi_timer, rw_intr_mask);
291 REG_WR(timer, regi_timer, rw_intr_mask, intr_mask);
292 fast_timers_started++;
293 fast_timer_running = 1;
297 /* We have passed the time, disable trig point, ack intr */
298 trig_cfg.tmr = regk_timer_off;
299 REG_WR(timer, regi_timer, rw_trig_cfg, trig_cfg);
300 REG_WR(timer, regi_timer, rw_ack_intr, ack_intr);
301 /* call the int routine directly */
302 timer_trig_handler();
307 /* In version 1.4 this function takes 27 - 50 us */
308 void start_one_shot_timer(struct fast_timer *t,
309 fast_timer_function_type *function,
311 unsigned long delay_us,
315 struct fast_timer *tmp;
317 D1(printk("sft %s %d us\n", name, delay_us));
319 local_irq_save(flags);
321 do_gettimeofday_fast(&t->tv_set);
322 tmp = fast_timer_list;
324 SANITYCHECK({ /* Check so this is not in the list already... */
329 printk("timer name: %s data: 0x%08lX already in list!\n", name, data);
338 tmp = fast_timer_list;
341 t->delay_us = delay_us;
342 t->function = function;
346 t->tv_expires.tv_usec = t->tv_set.tv_usec + delay_us % 1000000;
347 t->tv_expires.tv_sec = t->tv_set.tv_sec + delay_us / 1000000;
348 if (t->tv_expires.tv_usec > 1000000)
350 t->tv_expires.tv_usec -= 1000000;
351 t->tv_expires.tv_sec++;
353 #ifdef FAST_TIMER_LOG
354 timer_added_log[fast_timers_added % NUM_TIMER_STATS] = *t;
358 /* Check if this should timeout before anything else */
359 if (tmp == NULL || timeval_cmp(&t->tv_expires, &tmp->tv_expires) < 0)
361 /* Put first in list and modify the timer value */
363 t->next = fast_timer_list;
366 fast_timer_list->prev = t;
369 #ifdef FAST_TIMER_LOG
370 timer_started_log[fast_timers_started % NUM_TIMER_STATS] = *t;
372 start_timer_trig(delay_us);
374 /* Put in correct place in list */
376 timeval_cmp(&t->tv_expires, &tmp->next->tv_expires) > 0)
380 /* Insert t after tmp */
390 D2(printk("start_one_shot_timer: %d us done\n", delay_us));
392 local_irq_restore(flags);
393 } /* start_one_shot_timer */
395 static inline int fast_timer_pending (const struct fast_timer * t)
397 return (t->next != NULL) || (t->prev != NULL) || (t == fast_timer_list);
400 static inline int detach_fast_timer (struct fast_timer *t)
402 struct fast_timer *next, *prev;
403 if (!fast_timer_pending(t))
412 fast_timer_list = next;
413 fast_timers_deleted++;
417 int del_fast_timer(struct fast_timer * t)
422 local_irq_save(flags);
423 ret = detach_fast_timer(t);
424 t->next = t->prev = NULL;
425 local_irq_restore(flags);
427 } /* del_fast_timer */
430 /* Interrupt routines or functions called in interrupt context */
432 /* Timer interrupt handler for trig interrupts */
435 timer_trig_interrupt(int irq, void *dev_id, struct pt_regs *regs)
437 reg_timer_r_masked_intr masked_intr;
439 /* Check if the timer interrupt is for us (a trig int) */
440 masked_intr = REG_RD(timer, regi_timer, r_masked_intr);
441 if (!masked_intr.trig)
443 timer_trig_handler();
447 static void timer_trig_handler(void)
449 reg_timer_rw_ack_intr ack_intr = { 0 };
450 reg_timer_rw_intr_mask intr_mask;
451 reg_timer_rw_trig_cfg trig_cfg = { 0 };
452 struct fast_timer *t;
455 local_irq_save(flags);
457 /* Clear timer trig interrupt */
458 intr_mask = REG_RD(timer, regi_timer, rw_intr_mask);
460 REG_WR(timer, regi_timer, rw_intr_mask, intr_mask);
462 /* First stop timer, then ack interrupt */
464 trig_cfg.tmr = regk_timer_off;
465 REG_WR(timer, regi_timer, rw_trig_cfg, trig_cfg);
469 REG_WR(timer, regi_timer, rw_ack_intr, ack_intr);
471 fast_timer_running = 0;
474 local_irq_restore(flags);
481 /* Has it really expired? */
482 do_gettimeofday_fast(&tv);
483 D1(printk("t: %is %06ius\n", tv.tv_sec, tv.tv_usec));
485 if (timeval_cmp(&t->tv_expires, &tv) <= 0)
487 /* Yes it has expired */
488 #ifdef FAST_TIMER_LOG
489 timer_expired_log[fast_timers_expired % NUM_TIMER_STATS] = *t;
491 fast_timers_expired++;
493 /* Remove this timer before call, since it may reuse the timer */
494 local_irq_save(flags);
497 t->prev->next = t->next;
501 fast_timer_list = t->next;
505 t->next->prev = t->prev;
509 local_irq_restore(flags);
511 if (t->function != NULL)
513 t->function(t->data);
517 DEBUG_LOG("!trimertrig %i function==NULL!\n", fast_timer_ints);
522 /* Timer is to early, let's set it again using the normal routines */
526 local_irq_save(flags);
527 if ((t = fast_timer_list) != NULL)
529 /* Start next timer.. */
533 do_gettimeofday_fast(&tv);
534 us = ((t->tv_expires.tv_sec - tv.tv_sec) * 1000000 +
535 t->tv_expires.tv_usec - tv.tv_usec);
538 if (!fast_timer_running)
540 #ifdef FAST_TIMER_LOG
541 timer_started_log[fast_timers_started % NUM_TIMER_STATS] = *t;
543 start_timer_trig(us);
545 local_irq_restore(flags);
550 /* Timer already expired, let's handle it better late than never.
551 * The normal loop handles it
553 D1(printk("e! %d\n", us));
556 local_irq_restore(flags);
561 D1(printk("ttrig stop!\n"));
565 static void wake_up_func(unsigned long data)
567 #ifdef DECLARE_WAITQUEUE
568 wait_queue_head_t *sleep_wait_p = (wait_queue_head_t*)data;
570 struct wait_queue **sleep_wait_p = (struct wait_queue **)data;
572 wake_up(sleep_wait_p);
578 void schedule_usleep(unsigned long us)
581 #ifdef DECLARE_WAITQUEUE
582 wait_queue_head_t sleep_wait;
583 init_waitqueue_head(&sleep_wait);
585 DECLARE_WAITQUEUE(wait, current);
587 struct wait_queue *sleep_wait = NULL;
588 struct wait_queue wait = { current, NULL };
591 D1(printk("schedule_usleep(%d)\n", us));
592 add_wait_queue(&sleep_wait, &wait);
593 set_current_state(TASK_INTERRUPTIBLE);
594 start_one_shot_timer(&t, wake_up_func, (unsigned long)&sleep_wait, us,
597 set_current_state(TASK_RUNNING);
598 remove_wait_queue(&sleep_wait, &wait);
599 D1(printk("done schedule_usleep(%d)\n", us));
600 #ifdef DECLARE_WAITQUEUE
605 #ifdef CONFIG_PROC_FS
606 static int proc_fasttimer_read(char *buf, char **start, off_t offset, int len
607 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
608 ,int *eof, void *data_unused
613 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
614 static struct proc_dir_entry *fasttimer_proc_entry;
616 static struct proc_dir_entry fasttimer_proc_entry =
619 S_IFREG | S_IRUGO, 1, 0, 0,
620 0, NULL /* ops -- default to array */,
621 &proc_fasttimer_read /* get_info */,
624 #endif /* CONFIG_PROC_FS */
626 #ifdef CONFIG_PROC_FS
628 /* This value is very much based on testing */
629 #define BIG_BUF_SIZE (500 + NUM_TIMER_STATS * 300)
631 static int proc_fasttimer_read(char *buf, char **start, off_t offset, int len
632 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
633 ,int *eof, void *data_unused
643 struct fast_timer *t, *nextt;
644 static char *bigbuf = NULL;
645 static unsigned long used;
647 if (!bigbuf && !(bigbuf = vmalloc(BIG_BUF_SIZE)))
654 if (!offset || !used)
656 do_gettimeofday_fast(&tv);
659 used += sprintf(bigbuf + used, "Fast timers added: %i\n",
661 used += sprintf(bigbuf + used, "Fast timers started: %i\n",
662 fast_timers_started);
663 used += sprintf(bigbuf + used, "Fast timer interrupts: %i\n",
665 used += sprintf(bigbuf + used, "Fast timers expired: %i\n",
666 fast_timers_expired);
667 used += sprintf(bigbuf + used, "Fast timers deleted: %i\n",
668 fast_timers_deleted);
669 used += sprintf(bigbuf + used, "Fast timer running: %s\n",
670 fast_timer_running ? "yes" : "no");
671 used += sprintf(bigbuf + used, "Current time: %lu.%06lu\n",
672 (unsigned long)tv.tv_sec,
673 (unsigned long)tv.tv_usec);
674 #ifdef FAST_TIMER_SANITY_CHECKS
675 used += sprintf(bigbuf + used, "Sanity failed: %i\n",
678 used += sprintf(bigbuf + used, "\n");
680 #ifdef DEBUG_LOG_INCLUDED
682 int end_i = debug_log_cnt;
685 if (debug_log_cnt_wrapped)
690 while ((i != end_i || (debug_log_cnt_wrapped && !used)) &&
691 used+100 < BIG_BUF_SIZE)
693 used += sprintf(bigbuf + used, debug_log_string[i],
695 i = (i+1) % DEBUG_LOG_MAX;
698 used += sprintf(bigbuf + used, "\n");
701 num_to_show = (fast_timers_started < NUM_TIMER_STATS ? fast_timers_started:
703 used += sprintf(bigbuf + used, "Timers started: %i\n", fast_timers_started);
704 for (i = 0; i < num_to_show && (used+100 < BIG_BUF_SIZE) ; i++)
706 int cur = (fast_timers_started - i - 1) % NUM_TIMER_STATS;
708 #if 1 //ndef FAST_TIMER_LOG
709 used += sprintf(bigbuf + used, "div: %i delay: %i"
711 timer_div_settings[cur],
712 timer_delay_settings[cur]
715 #ifdef FAST_TIMER_LOG
716 t = &timer_started_log[cur];
717 used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
718 "d: %6li us data: 0x%08lX"
721 (unsigned long)t->tv_set.tv_sec,
722 (unsigned long)t->tv_set.tv_usec,
723 (unsigned long)t->tv_expires.tv_sec,
724 (unsigned long)t->tv_expires.tv_usec,
730 used += sprintf(bigbuf + used, "\n");
732 #ifdef FAST_TIMER_LOG
733 num_to_show = (fast_timers_added < NUM_TIMER_STATS ? fast_timers_added:
735 used += sprintf(bigbuf + used, "Timers added: %i\n", fast_timers_added);
736 for (i = 0; i < num_to_show && (used+100 < BIG_BUF_SIZE); i++)
738 t = &timer_added_log[(fast_timers_added - i - 1) % NUM_TIMER_STATS];
739 used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
740 "d: %6li us data: 0x%08lX"
743 (unsigned long)t->tv_set.tv_sec,
744 (unsigned long)t->tv_set.tv_usec,
745 (unsigned long)t->tv_expires.tv_sec,
746 (unsigned long)t->tv_expires.tv_usec,
751 used += sprintf(bigbuf + used, "\n");
753 num_to_show = (fast_timers_expired < NUM_TIMER_STATS ? fast_timers_expired:
755 used += sprintf(bigbuf + used, "Timers expired: %i\n", fast_timers_expired);
756 for (i = 0; i < num_to_show && (used+100 < BIG_BUF_SIZE); i++)
758 t = &timer_expired_log[(fast_timers_expired - i - 1) % NUM_TIMER_STATS];
759 used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
760 "d: %6li us data: 0x%08lX"
763 (unsigned long)t->tv_set.tv_sec,
764 (unsigned long)t->tv_set.tv_usec,
765 (unsigned long)t->tv_expires.tv_sec,
766 (unsigned long)t->tv_expires.tv_usec,
771 used += sprintf(bigbuf + used, "\n");
774 used += sprintf(bigbuf + used, "Active timers:\n");
775 local_irq_save(flags);
776 local_irq_save(flags);
778 while (t != NULL && (used+100 < BIG_BUF_SIZE))
781 local_irq_restore(flags);
782 used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
783 "d: %6li us data: 0x%08lX"
784 /* " func: 0x%08lX" */
787 (unsigned long)t->tv_set.tv_sec,
788 (unsigned long)t->tv_set.tv_usec,
789 (unsigned long)t->tv_expires.tv_sec,
790 (unsigned long)t->tv_expires.tv_usec,
796 if (t->next != nextt)
798 printk("timer removed!\n");
802 local_irq_restore(flags);
805 if (used - offset < len)
810 memcpy(buf, bigbuf + offset, len);
812 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
820 #ifdef FAST_TIMER_TEST
821 static volatile unsigned long i = 0;
822 static volatile int num_test_timeout = 0;
823 static struct fast_timer tr[10];
824 static int exp_num[10];
826 static struct timeval tv_exp[100];
828 static void test_timeout(unsigned long data)
830 do_gettimeofday_fast(&tv_exp[data]);
831 exp_num[data] = num_test_timeout;
836 static void test_timeout1(unsigned long data)
838 do_gettimeofday_fast(&tv_exp[data]);
839 exp_num[data] = num_test_timeout;
842 start_one_shot_timer(&tr[i], test_timeout1, i, 1000, "timeout1");
849 static char buf0[2000];
850 static char buf1[2000];
851 static char buf2[2000];
852 static char buf3[2000];
853 static char buf4[2000];
856 static char buf5[6000];
857 static int j_u[1000];
859 static void fast_timer_test(void)
864 struct timeval tv, tv0, tv1, tv2;
866 printk("fast_timer_test() start\n");
867 do_gettimeofday_fast(&tv);
869 for (j = 0; j < 1000; j++)
871 j_u[j] = GET_JIFFIES_USEC();
873 for (j = 0; j < 100; j++)
875 do_gettimeofday_fast(&tv_exp[j]);
877 printk("fast_timer_test() %is %06i\n", tv.tv_sec, tv.tv_usec);
879 for (j = 0; j < 1000; j++)
881 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]);
884 for (j = 0; j < 100; j++)
886 printk("%i.%i %i.%i %i.%i %i.%i %i.%i\n",
887 tv_exp[j].tv_sec,tv_exp[j].tv_usec,
888 tv_exp[j+1].tv_sec,tv_exp[j+1].tv_usec,
889 tv_exp[j+2].tv_sec,tv_exp[j+2].tv_usec,
890 tv_exp[j+3].tv_sec,tv_exp[j+3].tv_usec,
891 tv_exp[j+4].tv_sec,tv_exp[j+4].tv_usec);
894 do_gettimeofday_fast(&tv0);
895 start_one_shot_timer(&tr[i], test_timeout, i, 50000, "test0");
896 DP(proc_fasttimer_read(buf0, NULL, 0, 0, 0));
898 start_one_shot_timer(&tr[i], test_timeout, i, 70000, "test1");
899 DP(proc_fasttimer_read(buf1, NULL, 0, 0, 0));
901 start_one_shot_timer(&tr[i], test_timeout, i, 40000, "test2");
902 DP(proc_fasttimer_read(buf2, NULL, 0, 0, 0));
904 start_one_shot_timer(&tr[i], test_timeout, i, 60000, "test3");
905 DP(proc_fasttimer_read(buf3, NULL, 0, 0, 0));
907 start_one_shot_timer(&tr[i], test_timeout1, i, 55000, "test4xx");
908 DP(proc_fasttimer_read(buf4, NULL, 0, 0, 0));
910 do_gettimeofday_fast(&tv1);
912 proc_fasttimer_read(buf5, NULL, 0, 0, 0);
914 prev_num = num_test_timeout;
915 while (num_test_timeout < i)
917 if (num_test_timeout != prev_num)
919 prev_num = num_test_timeout;
922 do_gettimeofday_fast(&tv2);
923 printk("Timers started %is %06i\n", tv0.tv_sec, tv0.tv_usec);
924 printk("Timers started at %is %06i\n", tv1.tv_sec, tv1.tv_usec);
925 printk("Timers done %is %06i\n", tv2.tv_sec, tv2.tv_usec);
926 DP(printk("buf0:\n");
940 printk("timers set:\n");
943 struct fast_timer *t = &tr[j];
944 printk("%-10s set: %6is %06ius exp: %6is %06ius "
945 "data: 0x%08X func: 0x%08X\n",
949 t->tv_expires.tv_sec,
950 t->tv_expires.tv_usec,
955 printk(" del: %6ius did exp: %6is %06ius as #%i error: %6li\n",
960 (tv_exp[j].tv_sec - t->tv_expires.tv_sec)*1000000 + tv_exp[j].tv_usec - t->tv_expires.tv_usec);
962 proc_fasttimer_read(buf5, NULL, 0, 0, 0);
963 printk("buf5 after all done:\n");
965 printk("fast_timer_test() done\n");
970 void fast_timer_init(void)
972 /* For some reason, request_irq() hangs when called froom time_init() */
973 if (!fast_timer_is_init)
975 printk("fast_timer_init()\n");
977 #ifdef CONFIG_PROC_FS
978 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
979 if ((fasttimer_proc_entry = create_proc_entry( "fasttimer", 0, 0 )))
980 fasttimer_proc_entry->read_proc = proc_fasttimer_read;
982 proc_register_dynamic(&proc_root, &fasttimer_proc_entry);
985 if(request_irq(TIMER_INTR_VECT, timer_trig_interrupt, SA_INTERRUPT,
986 "fast timer int", NULL))
988 printk("err: timer1 irq\n");
990 fast_timer_is_init = 1;
991 #ifdef FAST_TIMER_TEST