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-rw-r--r--arch/cris/arch-v10/kernel/fasttimer.c835
1 files changed, 0 insertions, 835 deletions
diff --git a/arch/cris/arch-v10/kernel/fasttimer.c b/arch/cris/arch-v10/kernel/fasttimer.c
deleted file mode 100644
index 94abbff557ff..000000000000
--- a/arch/cris/arch-v10/kernel/fasttimer.c
+++ /dev/null
@@ -1,835 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/arch/cris/kernel/fasttimer.c
- *
- * Fast timers for ETRAX100/ETRAX100LX
- *
- * Copyright (C) 2000-2007 Axis Communications AB, Lund, Sweden
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/param.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/vmalloc.h>
-#include <linux/interrupt.h>
-#include <linux/time.h>
-#include <linux/delay.h>
-
-#include <asm/segment.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/delay.h>
-
-#include <arch/svinto.h>
-#include <asm/fasttimer.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-
-
-#define DEBUG_LOG_INCLUDED
-#define FAST_TIMER_LOG
-/* #define FAST_TIMER_TEST */
-
-#define FAST_TIMER_SANITY_CHECKS
-
-#ifdef FAST_TIMER_SANITY_CHECKS
-static int sanity_failed;
-#endif
-
-#define D1(x)
-#define D2(x)
-#define DP(x)
-
-static unsigned int fast_timer_running;
-static unsigned int fast_timers_added;
-static unsigned int fast_timers_started;
-static unsigned int fast_timers_expired;
-static unsigned int fast_timers_deleted;
-static unsigned int fast_timer_is_init;
-static unsigned int fast_timer_ints;
-
-struct fast_timer *fast_timer_list = NULL;
-
-#ifdef DEBUG_LOG_INCLUDED
-#define DEBUG_LOG_MAX 128
-static const char * debug_log_string[DEBUG_LOG_MAX];
-static unsigned long debug_log_value[DEBUG_LOG_MAX];
-static unsigned int debug_log_cnt;
-static unsigned int debug_log_cnt_wrapped;
-
-#define DEBUG_LOG(string, value) \
-{ \
- unsigned long log_flags; \
- local_irq_save(log_flags); \
- debug_log_string[debug_log_cnt] = (string); \
- debug_log_value[debug_log_cnt] = (unsigned long)(value); \
- if (++debug_log_cnt >= DEBUG_LOG_MAX) \
- { \
- debug_log_cnt = debug_log_cnt % DEBUG_LOG_MAX; \
- debug_log_cnt_wrapped = 1; \
- } \
- local_irq_restore(log_flags); \
-}
-#else
-#define DEBUG_LOG(string, value)
-#endif
-
-
-/* The frequencies for index = clkselx number in R_TIMER_CTRL */
-#define NUM_TIMER_FREQ 15
-#define MAX_USABLE_TIMER_FREQ 7
-#define MAX_DELAY_US 853333L
-const unsigned long timer_freq_100[NUM_TIMER_FREQ] =
-{
- 3, /* 0 3333 - 853333 us */
- 6, /* 1 1666 - 426666 us */
- 12, /* 2 833 - 213333 us */
- 24, /* 3 416 - 106666 us */
- 48, /* 4 208 - 53333 us */
- 96, /* 5 104 - 26666 us */
- 192, /* 6 52 - 13333 us */
- 384, /* 7 26 - 6666 us */
- 576,
- 1152,
- 2304,
- 4608,
- 9216,
- 18432,
- 62500,
- /* 15 = cascade */
-};
-#define NUM_TIMER_STATS 16
-#ifdef FAST_TIMER_LOG
-struct fast_timer timer_added_log[NUM_TIMER_STATS];
-struct fast_timer timer_started_log[NUM_TIMER_STATS];
-struct fast_timer timer_expired_log[NUM_TIMER_STATS];
-#endif
-
-int timer_div_settings[NUM_TIMER_STATS];
-int timer_freq_settings[NUM_TIMER_STATS];
-int timer_delay_settings[NUM_TIMER_STATS];
-
-/* Not true gettimeofday, only checks the jiffies (uptime) + useconds */
-inline void do_gettimeofday_fast(struct fasttime_t *tv)
-{
- tv->tv_jiff = jiffies;
- tv->tv_usec = GET_JIFFIES_USEC();
-}
-
-inline int fasttime_cmp(struct fasttime_t *t0, struct fasttime_t *t1)
-{
- /* Compare jiffies. Takes care of wrapping */
- if (time_before(t0->tv_jiff, t1->tv_jiff))
- return -1;
- else if (time_after(t0->tv_jiff, t1->tv_jiff))
- return 1;
-
- /* Compare us */
- if (t0->tv_usec < t1->tv_usec)
- return -1;
- else if (t0->tv_usec > t1->tv_usec)
- return 1;
- return 0;
-}
-
-inline void start_timer1(unsigned long delay_us)
-{
- int freq_index = 0; /* This is the lowest resolution */
- unsigned long upper_limit = MAX_DELAY_US;
-
- unsigned long div;
- /* Start/Restart the timer to the new shorter value */
- /* t = 1/freq = 1/19200 = 53us
- * T=div*t, div = T/t = delay_us*freq/1000000
- */
-#if 1 /* Adaptive timer settings */
- while (delay_us < upper_limit && freq_index < MAX_USABLE_TIMER_FREQ)
- {
- freq_index++;
- upper_limit >>= 1; /* Divide by 2 using shift */
- }
- if (freq_index > 0)
- {
- freq_index--;
- }
-#else
- freq_index = 6;
-#endif
- div = delay_us * timer_freq_100[freq_index]/10000;
- if (div < 2)
- {
- /* Maybe increase timer freq? */
- div = 2;
- }
- if (div > 255)
- {
- div = 0; /* This means 256, the max the timer takes */
- /* If a longer timeout than the timer can handle is used,
- * then we must restart it when it goes off.
- */
- }
-
- timer_div_settings[fast_timers_started % NUM_TIMER_STATS] = div;
- timer_freq_settings[fast_timers_started % NUM_TIMER_STATS] = freq_index;
- timer_delay_settings[fast_timers_started % NUM_TIMER_STATS] = delay_us;
-
- D1(printk(KERN_DEBUG "start_timer1 : %d us freq: %i div: %i\n",
- delay_us, freq_index, div));
- /* Clear timer1 irq */
- *R_IRQ_MASK0_CLR = IO_STATE(R_IRQ_MASK0_CLR, timer1, clr);
-
- /* Set timer values */
- *R_TIMER_CTRL = r_timer_ctrl_shadow =
- (r_timer_ctrl_shadow &
- ~IO_MASK(R_TIMER_CTRL, timerdiv1) &
- ~IO_MASK(R_TIMER_CTRL, tm1) &
- ~IO_MASK(R_TIMER_CTRL, clksel1)) |
- IO_FIELD(R_TIMER_CTRL, timerdiv1, div) |
- IO_STATE(R_TIMER_CTRL, tm1, stop_ld) |
- IO_FIELD(R_TIMER_CTRL, clksel1, freq_index ); /* 6=c19k2Hz */
-
- /* Ack interrupt */
- *R_TIMER_CTRL = r_timer_ctrl_shadow |
- IO_STATE(R_TIMER_CTRL, i1, clr);
-
- /* Start timer */
- *R_TIMER_CTRL = r_timer_ctrl_shadow =
- (r_timer_ctrl_shadow & ~IO_MASK(R_TIMER_CTRL, tm1)) |
- IO_STATE(R_TIMER_CTRL, tm1, run);
-
- /* Enable timer1 irq */
- *R_IRQ_MASK0_SET = IO_STATE(R_IRQ_MASK0_SET, timer1, set);
- fast_timers_started++;
- fast_timer_running = 1;
-}
-
-/* In version 1.4 this function takes 27 - 50 us */
-void start_one_shot_timer(struct fast_timer *t,
- fast_timer_function_type *function,
- unsigned long data,
- unsigned long delay_us,
- const char *name)
-{
- unsigned long flags;
- struct fast_timer *tmp;
-
- D1(printk("sft %s %d us\n", name, delay_us));
-
- local_irq_save(flags);
-
- do_gettimeofday_fast(&t->tv_set);
- tmp = fast_timer_list;
-
-#ifdef FAST_TIMER_SANITY_CHECKS
- /* Check so this is not in the list already... */
- while (tmp != NULL) {
- if (tmp == t) {
- printk(KERN_WARNING "timer name: %s data: "
- "0x%08lX already in list!\n", name, data);
- sanity_failed++;
- goto done;
- } else
- tmp = tmp->next;
- }
- tmp = fast_timer_list;
-#endif
-
- t->delay_us = delay_us;
- t->function = function;
- t->data = data;
- t->name = name;
-
- t->tv_expires.tv_usec = t->tv_set.tv_usec + delay_us % 1000000;
- t->tv_expires.tv_jiff = t->tv_set.tv_jiff + delay_us / 1000000 / HZ;
- if (t->tv_expires.tv_usec > 1000000)
- {
- t->tv_expires.tv_usec -= 1000000;
- t->tv_expires.tv_jiff += HZ;
- }
-#ifdef FAST_TIMER_LOG
- timer_added_log[fast_timers_added % NUM_TIMER_STATS] = *t;
-#endif
- fast_timers_added++;
-
- /* Check if this should timeout before anything else */
- if (tmp == NULL || fasttime_cmp(&t->tv_expires, &tmp->tv_expires) < 0)
- {
- /* Put first in list and modify the timer value */
- t->prev = NULL;
- t->next = fast_timer_list;
- if (fast_timer_list)
- {
- fast_timer_list->prev = t;
- }
- fast_timer_list = t;
-#ifdef FAST_TIMER_LOG
- timer_started_log[fast_timers_started % NUM_TIMER_STATS] = *t;
-#endif
- start_timer1(delay_us);
- } else {
- /* Put in correct place in list */
- while (tmp->next && fasttime_cmp(&t->tv_expires,
- &tmp->next->tv_expires) > 0)
- {
- tmp = tmp->next;
- }
- /* Insert t after tmp */
- t->prev = tmp;
- t->next = tmp->next;
- if (tmp->next)
- {
- tmp->next->prev = t;
- }
- tmp->next = t;
- }
-
- D2(printk("start_one_shot_timer: %d us done\n", delay_us));
-
-done:
- local_irq_restore(flags);
-} /* start_one_shot_timer */
-
-static inline int fast_timer_pending (const struct fast_timer * t)
-{
- return (t->next != NULL) || (t->prev != NULL) || (t == fast_timer_list);
-}
-
-static inline int detach_fast_timer (struct fast_timer *t)
-{
- struct fast_timer *next, *prev;
- if (!fast_timer_pending(t))
- return 0;
- next = t->next;
- prev = t->prev;
- if (next)
- next->prev = prev;
- if (prev)
- prev->next = next;
- else
- fast_timer_list = next;
- fast_timers_deleted++;
- return 1;
-}
-
-int del_fast_timer(struct fast_timer * t)
-{
- unsigned long flags;
- int ret;
-
- local_irq_save(flags);
- ret = detach_fast_timer(t);
- t->next = t->prev = NULL;
- local_irq_restore(flags);
- return ret;
-} /* del_fast_timer */
-
-
-/* Interrupt routines or functions called in interrupt context */
-
-/* Timer 1 interrupt handler */
-
-static irqreturn_t
-timer1_handler(int irq, void *dev_id)
-{
- struct fast_timer *t;
- unsigned long flags;
-
- /* We keep interrupts disabled not only when we modify the
- * fast timer list, but any time we hold a reference to a
- * timer in the list, since del_fast_timer may be called
- * from (another) interrupt context. Thus, the only time
- * when interrupts are enabled is when calling the timer
- * callback function.
- */
- local_irq_save(flags);
-
- /* Clear timer1 irq */
- *R_IRQ_MASK0_CLR = IO_STATE(R_IRQ_MASK0_CLR, timer1, clr);
-
- /* First stop timer, then ack interrupt */
- /* Stop timer */
- *R_TIMER_CTRL = r_timer_ctrl_shadow =
- (r_timer_ctrl_shadow & ~IO_MASK(R_TIMER_CTRL, tm1)) |
- IO_STATE(R_TIMER_CTRL, tm1, stop_ld);
-
- /* Ack interrupt */
- *R_TIMER_CTRL = r_timer_ctrl_shadow | IO_STATE(R_TIMER_CTRL, i1, clr);
-
- fast_timer_running = 0;
- fast_timer_ints++;
-
- t = fast_timer_list;
- while (t)
- {
- struct fasttime_t tv;
- fast_timer_function_type *f;
- unsigned long d;
-
- /* Has it really expired? */
- do_gettimeofday_fast(&tv);
- D1(printk(KERN_DEBUG "t: %is %06ius\n",
- tv.tv_jiff, tv.tv_usec));
-
- if (fasttime_cmp(&t->tv_expires, &tv) <= 0)
- {
- /* Yes it has expired */
-#ifdef FAST_TIMER_LOG
- timer_expired_log[fast_timers_expired % NUM_TIMER_STATS] = *t;
-#endif
- fast_timers_expired++;
-
- /* Remove this timer before call, since it may reuse the timer */
- if (t->prev)
- {
- t->prev->next = t->next;
- }
- else
- {
- fast_timer_list = t->next;
- }
- if (t->next)
- {
- t->next->prev = t->prev;
- }
- t->prev = NULL;
- t->next = NULL;
-
- /* Save function callback data before enabling
- * interrupts, since the timer may be removed and
- * we don't know how it was allocated
- * (e.g. ->function and ->data may become overwritten
- * after deletion if the timer was stack-allocated).
- */
- f = t->function;
- d = t->data;
-
- if (f != NULL) {
- /* Run callback with interrupts enabled. */
- local_irq_restore(flags);
- f(d);
- local_irq_save(flags);
- } else
- DEBUG_LOG("!timer1 %i function==NULL!\n", fast_timer_ints);
- }
- else
- {
- /* Timer is to early, let's set it again using the normal routines */
- D1(printk(".\n"));
- }
-
- if ((t = fast_timer_list) != NULL)
- {
- /* Start next timer.. */
- long us = 0;
- struct fasttime_t tv;
-
- do_gettimeofday_fast(&tv);
-
- /* time_after_eq takes care of wrapping */
- if (time_after_eq(t->tv_expires.tv_jiff, tv.tv_jiff))
- us = ((t->tv_expires.tv_jiff - tv.tv_jiff) *
- 1000000 / HZ + t->tv_expires.tv_usec -
- tv.tv_usec);
-
- if (us > 0)
- {
- if (!fast_timer_running)
- {
-#ifdef FAST_TIMER_LOG
- timer_started_log[fast_timers_started % NUM_TIMER_STATS] = *t;
-#endif
- start_timer1(us);
- }
- break;
- }
- else
- {
- /* Timer already expired, let's handle it better late than never.
- * The normal loop handles it
- */
- D1(printk("e! %d\n", us));
- }
- }
- }
-
- local_irq_restore(flags);
-
- if (!t)
- {
- D1(printk("t1 stop!\n"));
- }
-
- return IRQ_HANDLED;
-}
-
-static void wake_up_func(unsigned long data)
-{
- wait_queue_head_t *sleep_wait_p = (wait_queue_head_t *)data;
- wake_up(sleep_wait_p);
-}
-
-
-/* Useful API */
-
-void schedule_usleep(unsigned long us)
-{
- struct fast_timer t;
- wait_queue_head_t sleep_wait;
- init_waitqueue_head(&sleep_wait);
-
- D1(printk("schedule_usleep(%d)\n", us));
- start_one_shot_timer(&t, wake_up_func, (unsigned long)&sleep_wait, us,
- "usleep");
- /* Uninterruptible sleep on the fast timer. (The condition is somewhat
- * redundant since the timer is what wakes us up.) */
- wait_event(sleep_wait, !fast_timer_pending(&t));
-
- D1(printk("done schedule_usleep(%d)\n", us));
-}
-
-#ifdef CONFIG_PROC_FS
-/* This value is very much based on testing */
-#define BIG_BUF_SIZE (500 + NUM_TIMER_STATS * 300)
-
-static int proc_fasttimer_show(struct seq_file *m, void *v)
-{
- unsigned long flags;
- int i = 0;
- int num_to_show;
- struct fasttime_t tv;
- struct fast_timer *t, *nextt;
-
- do_gettimeofday_fast(&tv);
-
- seq_printf(m, "Fast timers added: %i\n", fast_timers_added);
- seq_printf(m, "Fast timers started: %i\n", fast_timers_started);
- seq_printf(m, "Fast timer interrupts: %i\n", fast_timer_ints);
- seq_printf(m, "Fast timers expired: %i\n", fast_timers_expired);
- seq_printf(m, "Fast timers deleted: %i\n", fast_timers_deleted);
- seq_printf(m, "Fast timer running: %s\n",
- fast_timer_running ? "yes" : "no");
- seq_printf(m, "Current time: %lu.%06lu\n",
- (unsigned long)tv.tv_jiff,
- (unsigned long)tv.tv_usec);
-#ifdef FAST_TIMER_SANITY_CHECKS
- seq_printf(m, "Sanity failed: %i\n", sanity_failed);
-#endif
- seq_putc(m, '\n');
-
-#ifdef DEBUG_LOG_INCLUDED
- {
- int end_i = debug_log_cnt;
- i = 0;
-
- if (debug_log_cnt_wrapped)
- i = debug_log_cnt;
-
- while (i != end_i || debug_log_cnt_wrapped) {
- seq_printf(m, debug_log_string[i], debug_log_value[i]);
- if (seq_has_overflowed(m))
- return 0;
- i = (i+1) % DEBUG_LOG_MAX;
- }
- }
- seq_putc(m, '\n');
-#endif
-
- num_to_show = (fast_timers_started < NUM_TIMER_STATS ? fast_timers_started:
- NUM_TIMER_STATS);
- seq_printf(m, "Timers started: %i\n", fast_timers_started);
- for (i = 0; i < num_to_show; i++) {
- int cur = (fast_timers_started - i - 1) % NUM_TIMER_STATS;
-
-#if 1 //ndef FAST_TIMER_LOG
- seq_printf(m, "div: %i freq: %i delay: %i\n",
- timer_div_settings[cur],
- timer_freq_settings[cur],
- timer_delay_settings[cur]);
-#endif
-#ifdef FAST_TIMER_LOG
- t = &timer_started_log[cur];
- seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu d: %6li us data: 0x%08lX\n",
- t->name,
- (unsigned long)t->tv_set.tv_jiff,
- (unsigned long)t->tv_set.tv_usec,
- (unsigned long)t->tv_expires.tv_jiff,
- (unsigned long)t->tv_expires.tv_usec,
- t->delay_us,
- t->data);
- if (seq_has_overflowed(m))
- return 0;
-#endif
- }
- seq_putc(m, '\n');
-
-#ifdef FAST_TIMER_LOG
- num_to_show = (fast_timers_added < NUM_TIMER_STATS ? fast_timers_added:
- NUM_TIMER_STATS);
- seq_printf(m, "Timers added: %i\n", fast_timers_added);
- for (i = 0; i < num_to_show; i++) {
- t = &timer_added_log[(fast_timers_added - i - 1) % NUM_TIMER_STATS];
- seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu d: %6li us data: 0x%08lX\n",
- t->name,
- (unsigned long)t->tv_set.tv_jiff,
- (unsigned long)t->tv_set.tv_usec,
- (unsigned long)t->tv_expires.tv_jiff,
- (unsigned long)t->tv_expires.tv_usec,
- t->delay_us,
- t->data);
- if (seq_has_overflowed(m))
- return 0;
- }
- seq_putc(m, '\n');
-
- num_to_show = (fast_timers_expired < NUM_TIMER_STATS ? fast_timers_expired:
- NUM_TIMER_STATS);
- seq_printf(m, "Timers expired: %i\n", fast_timers_expired);
- for (i = 0; i < num_to_show; i++) {
- t = &timer_expired_log[(fast_timers_expired - i - 1) % NUM_TIMER_STATS];
- seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu d: %6li us data: 0x%08lX\n",
- t->name,
- (unsigned long)t->tv_set.tv_jiff,
- (unsigned long)t->tv_set.tv_usec,
- (unsigned long)t->tv_expires.tv_jiff,
- (unsigned long)t->tv_expires.tv_usec,
- t->delay_us,
- t->data);
- if (seq_has_overflowed(m))
- return 0;
- }
- seq_putc(m, '\n');
-#endif
-
- seq_puts(m, "Active timers:\n");
- local_irq_save(flags);
- t = fast_timer_list;
- while (t) {
- nextt = t->next;
- local_irq_restore(flags);
- seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu d: %6li us data: 0x%08lX\n",
- t->name,
- (unsigned long)t->tv_set.tv_jiff,
- (unsigned long)t->tv_set.tv_usec,
- (unsigned long)t->tv_expires.tv_jiff,
- (unsigned long)t->tv_expires.tv_usec,
- t->delay_us,
- t->data);
- if (seq_has_overflowed(m))
- return 0;
- local_irq_save(flags);
- if (t->next != nextt)
- printk(KERN_WARNING "timer removed!\n");
- t = nextt;
- }
- local_irq_restore(flags);
-
- return 0;
-}
-
-static int proc_fasttimer_open(struct inode *inode, struct file *file)
-{
- return single_open_size(file, proc_fasttimer_show, PDE_DATA(inode), BIG_BUF_SIZE);
-}
-
-static const struct file_operations proc_fasttimer_fops = {
- .open = proc_fasttimer_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-#endif /* PROC_FS */
-
-#ifdef FAST_TIMER_TEST
-static volatile unsigned long i = 0;
-static volatile int num_test_timeout = 0;
-static struct fast_timer tr[10];
-static int exp_num[10];
-
-static struct fasttime_t tv_exp[100];
-
-static void test_timeout(unsigned long data)
-{
- do_gettimeofday_fast(&tv_exp[data]);
- exp_num[data] = num_test_timeout;
-
- num_test_timeout++;
-}
-
-static void test_timeout1(unsigned long data)
-{
- do_gettimeofday_fast(&tv_exp[data]);
- exp_num[data] = num_test_timeout;
- if (data < 7)
- {
- start_one_shot_timer(&tr[i], test_timeout1, i, 1000, "timeout1");
- i++;
- }
- num_test_timeout++;
-}
-
-DP(
-static char buf0[2000];
-static char buf1[2000];
-static char buf2[2000];
-static char buf3[2000];
-static char buf4[2000];
-);
-
-static char buf5[6000];
-static int j_u[1000];
-
-static void fast_timer_test(void)
-{
- int prev_num;
- int j;
-
- struct fasttime_t tv, tv0, tv1, tv2;
-
- printk("fast_timer_test() start\n");
- do_gettimeofday_fast(&tv);
-
- for (j = 0; j < 1000; j++)
- {
- j_u[j] = GET_JIFFIES_USEC();
- }
- for (j = 0; j < 100; j++)
- {
- do_gettimeofday_fast(&tv_exp[j]);
- }
- printk(KERN_DEBUG "fast_timer_test() %is %06i\n",
- tv.tv_jiff, tv.tv_usec);
-
- for (j = 0; j < 1000; j++)
- {
- 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]);
- j += 4;
- }
- for (j = 0; j < 100; j++)
- {
- printk(KERN_DEBUG "%i.%i %i.%i %i.%i %i.%i %i.%i\n",
- tv_exp[j].tv_jiff, tv_exp[j].tv_usec,
- tv_exp[j+1].tv_jiff, tv_exp[j+1].tv_usec,
- tv_exp[j+2].tv_jiff, tv_exp[j+2].tv_usec,
- tv_exp[j+3].tv_jiff, tv_exp[j+3].tv_usec,
- tv_exp[j+4].tv_jiff, tv_exp[j+4].tv_usec);
- j += 4;
- }
- do_gettimeofday_fast(&tv0);
- start_one_shot_timer(&tr[i], test_timeout, i, 50000, "test0");
- DP(proc_fasttimer_read(buf0, NULL, 0, 0, 0));
- i++;
- start_one_shot_timer(&tr[i], test_timeout, i, 70000, "test1");
- DP(proc_fasttimer_read(buf1, NULL, 0, 0, 0));
- i++;
- start_one_shot_timer(&tr[i], test_timeout, i, 40000, "test2");
- DP(proc_fasttimer_read(buf2, NULL, 0, 0, 0));
- i++;
- start_one_shot_timer(&tr[i], test_timeout, i, 60000, "test3");
- DP(proc_fasttimer_read(buf3, NULL, 0, 0, 0));
- i++;
- start_one_shot_timer(&tr[i], test_timeout1, i, 55000, "test4xx");
- DP(proc_fasttimer_read(buf4, NULL, 0, 0, 0));
- i++;
- do_gettimeofday_fast(&tv1);
-
- proc_fasttimer_read(buf5, NULL, 0, 0, 0);
-
- prev_num = num_test_timeout;
- while (num_test_timeout < i)
- {
- if (num_test_timeout != prev_num)
- {
- prev_num = num_test_timeout;
- }
- }
- do_gettimeofday_fast(&tv2);
- printk(KERN_DEBUG "Timers started %is %06i\n",
- tv0.tv_jiff, tv0.tv_usec);
- printk(KERN_DEBUG "Timers started at %is %06i\n",
- tv1.tv_jiff, tv1.tv_usec);
- printk(KERN_DEBUG "Timers done %is %06i\n",
- tv2.tv_jiff, tv2.tv_usec);
- DP(printk("buf0:\n");
- printk(buf0);
- printk("buf1:\n");
- printk(buf1);
- printk("buf2:\n");
- printk(buf2);
- printk("buf3:\n");
- printk(buf3);
- printk("buf4:\n");
- printk(buf4);
- );
- printk("buf5:\n");
- printk(buf5);
-
- printk("timers set:\n");
- for(j = 0; j<i; j++)
- {
- struct fast_timer *t = &tr[j];
- printk("%-10s set: %6is %06ius exp: %6is %06ius "
- "data: 0x%08X func: 0x%08X\n",
- t->name,
- t->tv_set.tv_jiff,
- t->tv_set.tv_usec,
- t->tv_expires.tv_jiff,
- t->tv_expires.tv_usec,
- t->data,
- t->function
- );
-
- printk(" del: %6ius did exp: %6is %06ius as #%i error: %6li\n",
- t->delay_us,
- tv_exp[j].tv_jiff,
- tv_exp[j].tv_usec,
- exp_num[j],
- (tv_exp[j].tv_jiff - t->tv_expires.tv_jiff) *
- 1000000 + tv_exp[j].tv_usec -
- t->tv_expires.tv_usec);
- }
- proc_fasttimer_read(buf5, NULL, 0, 0, 0);
- printk("buf5 after all done:\n");
- printk(buf5);
- printk("fast_timer_test() done\n");
-}
-#endif
-
-
-int fast_timer_init(void)
-{
- /* For some reason, request_irq() hangs when called froom time_init() */
- if (!fast_timer_is_init)
- {
-#if 0 && defined(FAST_TIMER_TEST)
- int i;
-#endif
-
- printk(KERN_INFO "fast_timer_init()\n");
-
-#if 0 && defined(FAST_TIMER_TEST)
- for (i = 0; i <= TIMER0_DIV; i++)
- {
- /* We must be careful not to get overflow... */
- printk("%3i %6u\n", i, timer0_value_us[i]);
- }
-#endif
-#ifdef CONFIG_PROC_FS
- proc_create("fasttimer", 0, NULL, &proc_fasttimer_fops);
-#endif /* PROC_FS */
- if(request_irq(TIMER1_IRQ_NBR, timer1_handler, 0,
- "fast timer int", NULL))
- {
- printk("err: timer1 irq\n");
- }
- fast_timer_is_init = 1;
-#ifdef FAST_TIMER_TEST
- printk("do test\n");
- fast_timer_test();
-#endif
- }
- return 0;
-}
-__initcall(fast_timer_init);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 23:56:33 +0100