summaryrefslogtreecommitdiffstats
path: root/sound/core
diff options
context:
space:
mode:
authorTakashi Iwai <tiwai@suse.de>2010-01-12 09:40:08 +0100
committerTakashi Iwai <tiwai@suse.de>2010-01-12 09:40:08 +0100
commita29fb94ff48cba620e1ac1317f5eef5920ead3ff (patch)
tree2fb8e026712bdf7848ea400e25118f6a58824a02 /sound/core
parent52a7a5835173af61b9f6c3038212370d9717526f (diff)
parentdd3533eca859a6debb1565503ec03e68354e08e0 (diff)
downloadop-kernel-dev-a29fb94ff48cba620e1ac1317f5eef5920ead3ff.zip
op-kernel-dev-a29fb94ff48cba620e1ac1317f5eef5920ead3ff.tar.gz
Merge commit alsa/devel into topic/misc
Conflicts: include/sound/version.h
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/oss/pcm_oss.c32
-rw-r--r--sound/core/pcm.c4
-rw-r--r--sound/core/pcm_lib.c418
-rw-r--r--sound/core/pcm_native.c8
4 files changed, 253 insertions, 209 deletions
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index d9c9635..255ad91 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -632,6 +632,13 @@ static long snd_pcm_alsa_frames(struct snd_pcm_substream *substream, long bytes)
return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes);
}
+static inline
+snd_pcm_uframes_t get_hw_ptr_period(struct snd_pcm_runtime *runtime)
+{
+ snd_pcm_uframes_t ptr = runtime->status->hw_ptr;
+ return ptr - (ptr % runtime->period_size);
+}
+
/* define extended formats in the recent OSS versions (if any) */
/* linear formats */
#define AFMT_S32_LE 0x00001000
@@ -1102,7 +1109,7 @@ static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream)
return err;
}
runtime->oss.prepare = 0;
- runtime->oss.prev_hw_ptr_interrupt = 0;
+ runtime->oss.prev_hw_ptr_period = 0;
runtime->oss.period_ptr = 0;
runtime->oss.buffer_used = 0;
@@ -1950,7 +1957,8 @@ static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file *pcm_oss_file)
return result;
}
-static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream, snd_pcm_uframes_t hw_ptr)
+static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream,
+ snd_pcm_uframes_t hw_ptr)
{
struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_uframes_t appl_ptr;
@@ -1986,7 +1994,8 @@ static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int tr
if (runtime->oss.trigger)
goto _skip1;
if (atomic_read(&psubstream->mmap_count))
- snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt);
+ snd_pcm_oss_simulate_fill(psubstream,
+ get_hw_ptr_period(runtime));
runtime->oss.trigger = 1;
runtime->start_threshold = 1;
cmd = SNDRV_PCM_IOCTL_START;
@@ -2105,11 +2114,12 @@ static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream
info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size);
if (atomic_read(&substream->mmap_count)) {
snd_pcm_sframes_t n;
- n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt;
+ delay = get_hw_ptr_period(runtime);
+ n = delay - runtime->oss.prev_hw_ptr_period;
if (n < 0)
n += runtime->boundary;
info.blocks = n / runtime->period_size;
- runtime->oss.prev_hw_ptr_interrupt = delay;
+ runtime->oss.prev_hw_ptr_period = delay;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
snd_pcm_oss_simulate_fill(substream, delay);
info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX;
@@ -2673,18 +2683,22 @@ static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
if (atomic_read(&substream->mmap_count))
- return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt;
+ return runtime->oss.prev_hw_ptr_period !=
+ get_hw_ptr_period(runtime);
else
- return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames;
+ return snd_pcm_playback_avail(runtime) >=
+ runtime->oss.period_frames;
}
static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
if (atomic_read(&substream->mmap_count))
- return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt;
+ return runtime->oss.prev_hw_ptr_period !=
+ get_hw_ptr_period(runtime);
else
- return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames;
+ return snd_pcm_capture_avail(runtime) >=
+ runtime->oss.period_frames;
}
static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait)
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index 6884ae0..df57a0e 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -921,6 +921,10 @@ void snd_pcm_detach_substream(struct snd_pcm_substream *substream)
snd_free_pages((void*)runtime->control,
PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control)));
kfree(runtime->hw_constraints.rules);
+#ifdef CONFIG_SND_PCM_XRUN_DEBUG
+ if (runtime->hwptr_log)
+ kfree(runtime->hwptr_log);
+#endif
kfree(runtime);
substream->runtime = NULL;
put_pid(substream->pid);
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index b07cc36..0403a7d 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -126,17 +126,6 @@ void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_ufram
}
}
-#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)
{
@@ -147,6 +136,24 @@ static void pcm_debug_name(struct snd_pcm_substream *substream,
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;
@@ -154,7 +161,7 @@ static void xrun(struct snd_pcm_substream *substream)
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);
@@ -162,32 +169,102 @@ static void xrun(struct snd_pcm_substream *substream)
}
}
-static snd_pcm_uframes_t
-snd_pcm_update_hw_ptr_pos(struct snd_pcm_substream *substream,
- struct snd_pcm_runtime *runtime)
-{
+#define hw_ptr_error(substream, fmt, args...) \
+ do { \
+ if (xrun_debug(substream, XRUN_DEBUG_BASIC)) { \
+ xrun_log_show(substream); \
+ 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;
+};
- pos = substream->ops->pointer(substream);
- if (pos == SNDRV_PCM_POS_XRUN)
- return pos; /* XRUN */
- if (pos >= runtime->buffer_size) {
- if (printk_ratelimit()) {
- char name[16];
- pcm_debug_name(substream, name, sizeof(name));
- snd_printd(KERN_ERR "BUG: %s, pos = 0x%lx, "
- "buffer size = 0x%lx, period size = 0x%lx\n",
- name, pos, runtime->buffer_size,
- runtime->period_size);
- }
- pos = 0;
+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;
}
- pos -= pos % runtime->min_align;
- return pos;
+ 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;
+ log->idx = (log->idx + 1) % XRUN_LOG_CNT;
}
-static int snd_pcm_update_hw_ptr_post(struct snd_pcm_substream *substream,
- struct snd_pcm_runtime *runtime)
+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=%ld/%ld/%ld, "
+ "hwptr=%ld/%ld\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);
+ 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
+
+int snd_pcm_update_state(struct snd_pcm_substream *substream,
+ struct snd_pcm_runtime *runtime)
{
snd_pcm_uframes_t avail;
@@ -208,89 +285,96 @@ static int snd_pcm_update_hw_ptr_post(struct snd_pcm_substream *substream,
return -EPIPE;
}
}
- if (avail >= runtime->control->avail_min)
+ if (!runtime->nowake && 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)
+static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
+ unsigned int in_interrupt)
{
struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_uframes_t pos;
- snd_pcm_uframes_t old_hw_ptr, new_hw_ptr, hw_ptr_interrupt, hw_base;
+ snd_pcm_uframes_t old_hw_ptr, new_hw_ptr, hw_base;
snd_pcm_sframes_t hdelta, delta;
unsigned long jdelta;
old_hw_ptr = runtime->status->hw_ptr;
- pos = snd_pcm_update_hw_ptr_pos(substream, runtime);
+ pos = substream->ops->pointer(substream);
if (pos == SNDRV_PCM_POS_XRUN) {
xrun(substream);
return -EPIPE;
}
- if (xrun_debug(substream, 8)) {
- 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, (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);
+ if (pos >= runtime->buffer_size) {
+ if (printk_ratelimit()) {
+ char name[16];
+ pcm_debug_name(substream, name, sizeof(name));
+ xrun_log_show(substream);
+ snd_printd(KERN_ERR "BUG: %s, pos = %ld, "
+ "buffer size = %ld, period size = %ld\n",
+ name, pos, runtime->buffer_size,
+ runtime->period_size);
+ }
+ pos = 0;
}
+ pos -= pos % runtime->min_align;
+ if (xrun_debug(substream, XRUN_DEBUG_LOG))
+ xrun_log(substream, pos);
hw_base = runtime->hw_ptr_base;
new_hw_ptr = hw_base + pos;
- hw_ptr_interrupt = runtime->hw_ptr_interrupt + runtime->period_size;
- delta = new_hw_ptr - hw_ptr_interrupt;
- if (hw_ptr_interrupt >= runtime->boundary) {
- hw_ptr_interrupt -= runtime->boundary;
- if (hw_base < runtime->boundary / 2)
- /* hw_base was already lapped; recalc delta */
- delta = new_hw_ptr - hw_ptr_interrupt;
- }
- if (delta < 0) {
- if (runtime->periods == 1 || new_hw_ptr < old_hw_ptr)
- delta += runtime->buffer_size;
- if (delta < 0) {
- hw_ptr_error(substream,
- "Unexpected hw_pointer value "
- "(stream=%i, pos=%ld, intr_ptr=%ld)\n",
- substream->stream, (long)pos,
- (long)hw_ptr_interrupt);
-#if 1
- /* simply skipping the hwptr update seems more
- * robust in some cases, e.g. on VMware with
- * inaccurate timer source
- */
- return 0; /* skip this update */
-#else
- /* rebase to interrupt position */
- hw_base = new_hw_ptr = hw_ptr_interrupt;
- /* align hw_base to buffer_size */
- hw_base -= hw_base % runtime->buffer_size;
- delta = 0;
-#endif
- } else {
+ if (in_interrupt) {
+ /* we know that one period was processed */
+ /* delta = "expected next hw_ptr" for in_interrupt != 0 */
+ delta = old_hw_ptr - (old_hw_ptr % runtime->period_size)
+ + runtime->period_size;
+ if (delta > new_hw_ptr) {
hw_base += runtime->buffer_size;
if (hw_base >= runtime->boundary)
hw_base = 0;
new_hw_ptr = hw_base + pos;
+ goto __delta;
}
}
+ /* new_hw_ptr might be lower than old_hw_ptr in case when */
+ /* pointer crosses the end of the ring buffer */
+ if (new_hw_ptr < old_hw_ptr) {
+ hw_base += runtime->buffer_size;
+ if (hw_base >= runtime->boundary)
+ hw_base = 0;
+ new_hw_ptr = hw_base + pos;
+ }
+ __delta:
+ delta = (new_hw_ptr - old_hw_ptr) % runtime->boundary;
+ if (xrun_debug(substream, in_interrupt ?
+ XRUN_DEBUG_PERIODUPDATE : XRUN_DEBUG_HWPTRUPDATE)) {
+ char name[16];
+ pcm_debug_name(substream, name, sizeof(name));
+ snd_printd("%s_update: %s: pos=%u/%u/%u, "
+ "hwptr=%ld/%ld/%ld/%ld\n",
+ in_interrupt ? "period" : "hwptr",
+ name,
+ (unsigned int)pos,
+ (unsigned int)runtime->period_size,
+ (unsigned int)runtime->buffer_size,
+ (unsigned long)delta,
+ (unsigned long)old_hw_ptr,
+ (unsigned long)new_hw_ptr,
+ (unsigned long)runtime->hw_ptr_base);
+ }
+ /* something must be really wrong */
+ if (delta >= runtime->buffer_size + runtime->period_size) {
+ hw_ptr_error(substream,
+ "Unexpected hw_pointer value %s"
+ "(stream=%i, pos=%ld, new_hw_ptr=%ld, "
+ "old_hw_ptr=%ld)\n",
+ in_interrupt ? "[Q] " : "[P]",
+ substream->stream, (long)pos,
+ (long)new_hw_ptr, (long)old_hw_ptr);
+ return 0;
+ }
/* 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.
@@ -299,7 +383,7 @@ static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream)
*/
if (runtime->hw.info & SNDRV_PCM_INFO_BATCH)
goto no_jiffies_check;
- hdelta = new_hw_ptr - old_hw_ptr;
+ hdelta = delta;
if (hdelta < runtime->delay)
goto no_jiffies_check;
hdelta -= runtime->delay;
@@ -308,130 +392,62 @@ static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream)
delta = jdelta /
(((runtime->period_size * HZ) / runtime->rate)
+ HZ/100);
+ /* move new_hw_ptr according jiffies not pos variable */
+ new_hw_ptr = old_hw_ptr;
+ /* use loop to avoid checks for delta overflows */
+ /* the delta value is small or zero in most cases */
+ while (delta > 0) {
+ new_hw_ptr += runtime->period_size;
+ if (new_hw_ptr >= runtime->boundary)
+ new_hw_ptr -= runtime->boundary;
+ delta--;
+ }
+ /* align hw_base to buffer_size */
+ hw_base = new_hw_ptr - (new_hw_ptr % runtime->buffer_size);
+ delta = 0;
hw_ptr_error(substream,
- "hw_ptr skipping! [Q] "
+ "hw_ptr skipping! %s"
"(pos=%ld, delta=%ld, period=%ld, "
- "jdelta=%lu/%lu/%lu)\n",
+ "jdelta=%lu/%lu/%lu, hw_ptr=%ld/%ld)\n",
+ in_interrupt ? "[Q] " : "",
(long)pos, (long)hdelta,
(long)runtime->period_size, jdelta,
- ((hdelta * HZ) / runtime->rate), delta);
- hw_ptr_interrupt = runtime->hw_ptr_interrupt +
- runtime->period_size * delta;
- if (hw_ptr_interrupt >= runtime->boundary)
- hw_ptr_interrupt -= runtime->boundary;
- /* rebase to interrupt position */
- hw_base = new_hw_ptr = hw_ptr_interrupt;
- /* align hw_base to buffer_size */
- hw_base -= hw_base % runtime->buffer_size;
- delta = 0;
+ ((hdelta * HZ) / runtime->rate), delta,
+ (unsigned long)old_hw_ptr,
+ (unsigned long)new_hw_ptr);
}
no_jiffies_check:
if (delta > runtime->period_size + runtime->period_size / 2) {
hw_ptr_error(substream,
- "Lost interrupts? "
- "(stream=%i, delta=%ld, intr_ptr=%ld)\n",
+ "Lost interrupts? %s"
+ "(stream=%i, delta=%ld, new_hw_ptr=%ld, "
+ "old_hw_ptr=%ld)\n",
+ in_interrupt ? "[Q] " : "",
substream->stream, (long)delta,
- (long)hw_ptr_interrupt);
- /* rebase hw_ptr_interrupt */
- hw_ptr_interrupt =
- new_hw_ptr - new_hw_ptr % runtime->period_size;
+ (long)new_hw_ptr,
+ (long)old_hw_ptr);
}
- runtime->hw_ptr_interrupt = hw_ptr_interrupt;
+
+ if (runtime->status->hw_ptr == new_hw_ptr)
+ return 0;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
runtime->silence_size > 0)
snd_pcm_playback_silence(substream, new_hw_ptr);
- if (runtime->status->hw_ptr == new_hw_ptr)
- return 0;
-
runtime->hw_ptr_base = hw_base;
runtime->status->hw_ptr = new_hw_ptr;
runtime->hw_ptr_jiffies = jiffies;
if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE)
snd_pcm_gettime(runtime, (struct timespec *)&runtime->status->tstamp);
- return snd_pcm_update_hw_ptr_post(substream, runtime);
+ return snd_pcm_update_state(substream, runtime);
}
/* CAUTION: call it with irq disabled */
int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream)
{
- struct snd_pcm_runtime *runtime = substream->runtime;
- snd_pcm_uframes_t pos;
- snd_pcm_uframes_t old_hw_ptr, new_hw_ptr, hw_base;
- snd_pcm_sframes_t delta;
- unsigned long jdelta;
-
- old_hw_ptr = runtime->status->hw_ptr;
- pos = snd_pcm_update_hw_ptr_pos(substream, runtime);
- if (pos == SNDRV_PCM_POS_XRUN) {
- xrun(substream);
- return -EPIPE;
- }
- if (xrun_debug(substream, 16)) {
- 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, (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 - old_hw_ptr;
- jdelta = jiffies - runtime->hw_ptr_jiffies;
- if (delta < 0) {
- delta += runtime->buffer_size;
- if (delta < 0) {
- hw_ptr_error(substream,
- "Unexpected hw_pointer value [2] "
- "(stream=%i, pos=%ld, old_ptr=%ld, jdelta=%li)\n",
- substream->stream, (long)pos,
- (long)old_hw_ptr, jdelta);
- return 0;
- }
- hw_base += runtime->buffer_size;
- if (hw_base >= runtime->boundary)
- hw_base = 0;
- new_hw_ptr = hw_base + pos;
- }
- /* Do jiffies check only in xrun_debug mode */
- if (!xrun_debug(substream, 4))
- goto no_jiffies_check;
- if (delta < runtime->delay)
- goto no_jiffies_check;
- delta -= runtime->delay;
- if (((delta * HZ) / runtime->rate) > jdelta + HZ/100) {
- hw_ptr_error(substream,
- "hw_ptr skipping! "
- "(pos=%ld, delta=%ld, period=%ld, jdelta=%lu/%lu)\n",
- (long)pos, (long)delta,
- (long)runtime->period_size, jdelta,
- ((delta * HZ) / runtime->rate));
- return 0;
- }
- no_jiffies_check:
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
- runtime->silence_size > 0)
- snd_pcm_playback_silence(substream, new_hw_ptr);
-
- if (runtime->status->hw_ptr == new_hw_ptr)
- return 0;
-
- runtime->hw_ptr_base = hw_base;
- runtime->status->hw_ptr = new_hw_ptr;
- runtime->hw_ptr_jiffies = jiffies;
- if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE)
- snd_pcm_gettime(runtime, (struct timespec *)&runtime->status->tstamp);
-
- return snd_pcm_update_hw_ptr_post(substream, runtime);
+ return snd_pcm_update_hw_ptr0(substream, 0);
}
/**
@@ -1657,7 +1673,7 @@ void snd_pcm_period_elapsed(struct snd_pcm_substream *substream)
snd_pcm_stream_lock_irqsave(substream, flags);
if (!snd_pcm_running(substream) ||
- snd_pcm_update_hw_ptr_interrupt(substream) < 0)
+ snd_pcm_update_hw_ptr0(substream, 1) < 0)
goto _end;
if (substream->timer_running)
@@ -1790,6 +1806,7 @@ static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream,
goto _end_unlock;
}
+ runtime->nowake = 1;
while (size > 0) {
snd_pcm_uframes_t frames, appl_ptr, appl_ofs;
snd_pcm_uframes_t avail;
@@ -1811,15 +1828,17 @@ static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream,
if (frames > cont)
frames = cont;
if (snd_BUG_ON(!frames)) {
+ runtime->nowake = 0;
snd_pcm_stream_unlock_irq(substream);
return -EINVAL;
}
appl_ptr = runtime->control->appl_ptr;
appl_ofs = appl_ptr % runtime->buffer_size;
snd_pcm_stream_unlock_irq(substream);
- if ((err = transfer(substream, appl_ofs, data, offset, frames)) < 0)
- goto _end;
+ err = transfer(substream, appl_ofs, data, offset, frames);
snd_pcm_stream_lock_irq(substream);
+ if (err < 0)
+ goto _end_unlock;
switch (runtime->status->state) {
case SNDRV_PCM_STATE_XRUN:
err = -EPIPE;
@@ -1848,8 +1867,10 @@ static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream,
}
}
_end_unlock:
+ runtime->nowake = 0;
+ if (xfer > 0 && err >= 0)
+ snd_pcm_update_state(substream, runtime);
snd_pcm_stream_unlock_irq(substream);
- _end:
return xfer > 0 ? (snd_pcm_sframes_t)xfer : err;
}
@@ -2007,6 +2028,7 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream,
goto _end_unlock;
}
+ runtime->nowake = 1;
while (size > 0) {
snd_pcm_uframes_t frames, appl_ptr, appl_ofs;
snd_pcm_uframes_t avail;
@@ -2035,15 +2057,17 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream,
if (frames > cont)
frames = cont;
if (snd_BUG_ON(!frames)) {
+ runtime->nowake = 0;
snd_pcm_stream_unlock_irq(substream);
return -EINVAL;
}
appl_ptr = runtime->control->appl_ptr;
appl_ofs = appl_ptr % runtime->buffer_size;
snd_pcm_stream_unlock_irq(substream);
- if ((err = transfer(substream, appl_ofs, data, offset, frames)) < 0)
- goto _end;
+ err = transfer(substream, appl_ofs, data, offset, frames);
snd_pcm_stream_lock_irq(substream);
+ if (err < 0)
+ goto _end_unlock;
switch (runtime->status->state) {
case SNDRV_PCM_STATE_XRUN:
err = -EPIPE;
@@ -2066,8 +2090,10 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream,
xfer += frames;
}
_end_unlock:
+ runtime->nowake = 0;
+ if (xfer > 0 && err >= 0)
+ snd_pcm_update_state(substream, runtime);
snd_pcm_stream_unlock_irq(substream);
- _end:
return xfer > 0 ? (snd_pcm_sframes_t)xfer : err;
}
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 25b0641..a870fe69 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -516,6 +516,7 @@ static int snd_pcm_sw_params(struct snd_pcm_substream *substream,
struct snd_pcm_sw_params *params)
{
struct snd_pcm_runtime *runtime;
+ int err;
if (PCM_RUNTIME_CHECK(substream))
return -ENXIO;
@@ -540,6 +541,7 @@ static int snd_pcm_sw_params(struct snd_pcm_substream *substream,
if (params->silence_threshold > runtime->buffer_size)
return -EINVAL;
}
+ err = 0;
snd_pcm_stream_lock_irq(substream);
runtime->tstamp_mode = params->tstamp_mode;
runtime->period_step = params->period_step;
@@ -553,10 +555,10 @@ static int snd_pcm_sw_params(struct snd_pcm_substream *substream,
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
runtime->silence_size > 0)
snd_pcm_playback_silence(substream, ULONG_MAX);
- wake_up(&runtime->sleep);
+ err = snd_pcm_update_state(substream, runtime);
}
snd_pcm_stream_unlock_irq(substream);
- return 0;
+ return err;
}
static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream,
@@ -1247,8 +1249,6 @@ static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state)
if (err < 0)
return err;
runtime->hw_ptr_base = 0;
- runtime->hw_ptr_interrupt = runtime->status->hw_ptr -
- runtime->status->hw_ptr % runtime->period_size;
runtime->silence_start = runtime->status->hw_ptr;
runtime->silence_filled = 0;
return 0;
OpenPOWER on IntegriCloud