}
}
-#ifdef CONFIG_SND_PCM_XRUN_DEBUG
-#define xrun_debug(substream, mask) ((substream)->pstr->xrun_debug & (mask))
-#else
-#define xrun_debug(substream, mask) 0
-#endif
-
-#define dump_stack_on_xrun(substream) do { \
- if (xrun_debug(substream, 2)) \
- dump_stack(); \
- } while (0)
-
static void pcm_debug_name(struct snd_pcm_substream *substream,
char *name, size_t len)
{
substream->number);
}
+#define XRUN_DEBUG_BASIC (1<<0)
+#define XRUN_DEBUG_STACK (1<<1) /* dump also stack */
+#define XRUN_DEBUG_JIFFIESCHECK (1<<2) /* do jiffies check */
+#define XRUN_DEBUG_PERIODUPDATE (1<<3) /* full period update info */
+#define XRUN_DEBUG_HWPTRUPDATE (1<<4) /* full hwptr update info */
+#define XRUN_DEBUG_LOG (1<<5) /* show last 10 positions on err */
+#define XRUN_DEBUG_LOGONCE (1<<6) /* do above only once */
+
+#ifdef CONFIG_SND_PCM_XRUN_DEBUG
+
+#define xrun_debug(substream, mask) \
+ ((substream)->pstr->xrun_debug & (mask))
+
+#define dump_stack_on_xrun(substream) do { \
+ if (xrun_debug(substream, XRUN_DEBUG_STACK)) \
+ dump_stack(); \
+ } while (0)
+
static void xrun(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE)
snd_pcm_gettime(runtime, (struct timespec *)&runtime->status->tstamp);
snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
- if (xrun_debug(substream, 1)) {
+ if (xrun_debug(substream, XRUN_DEBUG_BASIC)) {
char name[16];
pcm_debug_name(substream, name, sizeof(name));
snd_printd(KERN_DEBUG "XRUN: %s\n", name);
}
}
+#define hw_ptr_error(substream, fmt, args...) \
+ do { \
+ if (xrun_debug(substream, XRUN_DEBUG_BASIC)) { \
+ if (printk_ratelimit()) { \
+ snd_printd("PCM: " fmt, ##args); \
+ } \
+ dump_stack_on_xrun(substream); \
+ } \
+ } while (0)
+
+#define XRUN_LOG_CNT 10
+
+struct hwptr_log_entry {
+ unsigned long jiffies;
+ snd_pcm_uframes_t pos;
+ snd_pcm_uframes_t period_size;
+ snd_pcm_uframes_t buffer_size;
+ snd_pcm_uframes_t old_hw_ptr;
+ snd_pcm_uframes_t hw_ptr_base;
+ snd_pcm_uframes_t hw_ptr_interrupt;
+};
+
+struct snd_pcm_hwptr_log {
+ unsigned int idx;
+ unsigned int hit: 1;
+ struct hwptr_log_entry entries[XRUN_LOG_CNT];
+};
+
+static void xrun_log(struct snd_pcm_substream *substream,
+ snd_pcm_uframes_t pos)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_pcm_hwptr_log *log = runtime->hwptr_log;
+ struct hwptr_log_entry *entry;
+
+ if (log == NULL) {
+ log = kzalloc(sizeof(*log), GFP_ATOMIC);
+ if (log == NULL)
+ return;
+ runtime->hwptr_log = log;
+ } else {
+ if (xrun_debug(substream, XRUN_DEBUG_LOGONCE) && log->hit)
+ return;
+ }
+ entry = &log->entries[log->idx];
+ entry->jiffies = jiffies;
+ entry->pos = pos;
+ entry->period_size = runtime->period_size;
+ entry->buffer_size = runtime->buffer_size;;
+ entry->old_hw_ptr = runtime->status->hw_ptr;
+ entry->hw_ptr_base = runtime->hw_ptr_base;
+ entry->hw_ptr_interrupt = runtime->hw_ptr_interrupt;;
+ log->idx = (log->idx + 1) % XRUN_LOG_CNT;
+}
+
+static void xrun_log_show(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_hwptr_log *log = substream->runtime->hwptr_log;
+ struct hwptr_log_entry *entry;
+ char name[16];
+ unsigned int idx;
+ int cnt;
+
+ if (log == NULL)
+ return;
+ if (xrun_debug(substream, XRUN_DEBUG_LOGONCE) && log->hit)
+ return;
+ pcm_debug_name(substream, name, sizeof(name));
+ for (cnt = 0, idx = log->idx; cnt < XRUN_LOG_CNT; cnt++) {
+ entry = &log->entries[idx];
+ if (entry->period_size == 0)
+ break;
+ snd_printd("hwptr log: %s: j=%lu, pos=0x%lx/0x%lx/0x%lx, "
+ "hwptr=0x%lx, hw_base=0x%lx, hw_intr=0x%lx\n",
+ name, entry->jiffies, (unsigned long)entry->pos,
+ (unsigned long)entry->period_size,
+ (unsigned long)entry->buffer_size,
+ (unsigned long)entry->old_hw_ptr,
+ (unsigned long)entry->hw_ptr_base,
+ (unsigned long)entry->hw_ptr_interrupt);
+ idx++;
+ idx %= XRUN_LOG_CNT;
+ }
+ log->hit = 1;
+}
+
+#else /* ! CONFIG_SND_PCM_XRUN_DEBUG */
+
+#define xrun_debug(substream, mask) 0
+#define xrun(substream) do { } while (0)
+#define hw_ptr_error(substream, fmt, args...) do { } while (0)
+#define xrun_log(substream, pos) do { } while (0)
+#define xrun_log_show(substream) do { } while (0)
+
+#endif
+
static snd_pcm_uframes_t
snd_pcm_update_hw_ptr_pos(struct snd_pcm_substream *substream,
struct snd_pcm_runtime *runtime)
if (printk_ratelimit()) {
char name[16];
pcm_debug_name(substream, name, sizeof(name));
+ xrun_log_show(substream);
snd_printd(KERN_ERR "BUG: %s, pos = 0x%lx, "
"buffer size = 0x%lx, period size = 0x%lx\n",
name, pos, runtime->buffer_size,
pos = 0;
}
pos -= pos % runtime->min_align;
+ if (xrun_debug(substream, XRUN_DEBUG_LOG))
+ xrun_log(substream, pos);
return pos;
}
avail = snd_pcm_capture_avail(runtime);
if (avail > runtime->avail_max)
runtime->avail_max = avail;
- if (avail >= runtime->stop_threshold) {
- if (substream->runtime->status->state == SNDRV_PCM_STATE_DRAINING)
+ if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) {
+ if (avail >= runtime->buffer_size) {
snd_pcm_drain_done(substream);
- else
+ return -EPIPE;
+ }
+ } else {
+ if (avail >= runtime->stop_threshold) {
xrun(substream);
- return -EPIPE;
+ return -EPIPE;
+ }
}
if (avail >= runtime->control->avail_min)
wake_up(&runtime->sleep);
return 0;
}
-#define hw_ptr_error(substream, fmt, args...) \
- do { \
- if (xrun_debug(substream, 1)) { \
- if (printk_ratelimit()) { \
- snd_printd("PCM: " fmt, ##args); \
- } \
- dump_stack_on_xrun(substream); \
- } \
- } while (0)
-
static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
xrun(substream);
return -EPIPE;
}
- if (xrun_debug(substream, 8)) {
+ if (xrun_debug(substream, XRUN_DEBUG_PERIODUPDATE)) {
char name[16];
pcm_debug_name(substream, name, sizeof(name));
snd_printd("period_update: %s: pos=0x%x/0x%x/0x%x, "
"hwptr=0x%lx, hw_base=0x%lx, hw_intr=0x%lx\n",
- name, pos,
- (int)runtime->period_size,
- (int)runtime->buffer_size,
- (long)old_hw_ptr,
- (long)runtime->hw_ptr_base,
- (long)runtime->hw_ptr_interrupt);
+ name, (unsigned int)pos,
+ (unsigned int)runtime->period_size,
+ (unsigned int)runtime->buffer_size,
+ (unsigned long)old_hw_ptr,
+ (unsigned long)runtime->hw_ptr_base,
+ (unsigned long)runtime->hw_ptr_interrupt);
}
hw_base = runtime->hw_ptr_base;
new_hw_ptr = hw_base + pos;
delta = new_hw_ptr - hw_ptr_interrupt;
}
if (delta < 0) {
- if (runtime->periods == 1)
+ if (runtime->periods == 1 || new_hw_ptr < old_hw_ptr)
delta += runtime->buffer_size;
if (delta < 0) {
+ xrun_log_show(substream);
hw_ptr_error(substream,
"Unexpected hw_pointer value "
"(stream=%i, pos=%ld, intr_ptr=%ld)\n",
}
/* Do jiffies check only in xrun_debug mode */
- if (!xrun_debug(substream, 4))
+ if (!xrun_debug(substream, XRUN_DEBUG_JIFFIESCHECK))
goto no_jiffies_check;
/* Skip the jiffies check for hardwares with BATCH flag.
delta = jdelta /
(((runtime->period_size * HZ) / runtime->rate)
+ HZ/100);
+ xrun_log_show(substream);
hw_ptr_error(substream,
"hw_ptr skipping! [Q] "
"(pos=%ld, delta=%ld, period=%ld, "
}
no_jiffies_check:
if (delta > runtime->period_size + runtime->period_size / 2) {
+ xrun_log_show(substream);
hw_ptr_error(substream,
"Lost interrupts? "
"(stream=%i, delta=%ld, intr_ptr=%ld)\n",
xrun(substream);
return -EPIPE;
}
- if (xrun_debug(substream, 16)) {
+ if (xrun_debug(substream, XRUN_DEBUG_HWPTRUPDATE)) {
char name[16];
pcm_debug_name(substream, name, sizeof(name));
snd_printd("hw_update: %s: pos=0x%x/0x%x/0x%x, "
"hwptr=0x%lx, hw_base=0x%lx, hw_intr=0x%lx\n",
- name, pos,
- (int)runtime->period_size,
- (int)runtime->buffer_size,
- (long)old_hw_ptr,
- (long)runtime->hw_ptr_base,
- (long)runtime->hw_ptr_interrupt);
+ name, (unsigned int)pos,
+ (unsigned int)runtime->period_size,
+ (unsigned int)runtime->buffer_size,
+ (unsigned long)old_hw_ptr,
+ (unsigned long)runtime->hw_ptr_base,
+ (unsigned long)runtime->hw_ptr_interrupt);
}
hw_base = runtime->hw_ptr_base;
if (delta < 0) {
delta += runtime->buffer_size;
if (delta < 0) {
+ xrun_log_show(substream);
hw_ptr_error(substream,
"Unexpected hw_pointer value [2] "
"(stream=%i, pos=%ld, old_ptr=%ld, jdelta=%li)\n",
new_hw_ptr = hw_base + pos;
}
/* Do jiffies check only in xrun_debug mode */
- if (!xrun_debug(substream, 4))
+ if (!xrun_debug(substream, XRUN_DEBUG_JIFFIESCHECK))
goto no_jiffies_check;
if (delta < runtime->delay)
goto no_jiffies_check;
delta -= runtime->delay;
if (((delta * HZ) / runtime->rate) > jdelta + HZ/100) {
+ xrun_log_show(substream);
hw_ptr_error(substream,
"hw_ptr skipping! "
"(pos=%ld, delta=%ld, period=%ld, jdelta=%lu/%lu)\n",
int snd_interval_list(struct snd_interval *i, unsigned int count, unsigned int *list, unsigned int mask)
{
unsigned int k;
- int changed = 0;
+ struct snd_interval list_range;
if (!count) {
i->empty = 1;
return -EINVAL;
}
+ snd_interval_any(&list_range);
+ list_range.min = UINT_MAX;
+ list_range.max = 0;
for (k = 0; k < count; k++) {
if (mask && !(mask & (1 << k)))
continue;
- if (i->min == list[k] && !i->openmin)
- goto _l1;
- if (i->min < list[k]) {
- i->min = list[k];
- i->openmin = 0;
- changed = 1;
- goto _l1;
- }
- }
- i->empty = 1;
- return -EINVAL;
- _l1:
- for (k = count; k-- > 0;) {
- if (mask && !(mask & (1 << k)))
+ if (!snd_interval_test(i, list[k]))
continue;
- if (i->max == list[k] && !i->openmax)
- goto _l2;
- if (i->max > list[k]) {
- i->max = list[k];
- i->openmax = 0;
- changed = 1;
- goto _l2;
- }
+ list_range.min = min(list_range.min, list[k]);
+ list_range.max = max(list_range.max, list[k]);
}
- i->empty = 1;
- return -EINVAL;
- _l2:
- if (snd_interval_checkempty(i)) {
- i->empty = 1;
- return -EINVAL;
- }
- return changed;
+ return snd_interval_refine(i, &list_range);
}
EXPORT_SYMBOL(snd_interval_list);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff