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https://github.com/torvalds/linux.git
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Merge branch 'master' of git://git.alsa-project.org/alsa-kernel into for-linus
* 'master' of git://git.alsa-project.org/alsa-kernel: [ALSA] intel8x0: add one retry to the ac97_clock measurement routine [ALSA] intel8x0: fix wrong conditions in ac97_clock measure routine [ALSA] intel8x0: do not use zero value from PICB register [ALSA] intel8x0: an attempt to make ac97_clock measurement more reliable [ALSA] pcm-midlevel: Add more strict buffer position checks based on jiffies [ALSA] hda_intel: fix unexpected ring buffer positions
This commit is contained in:
Takashi Iwai
commit
45c27fc8c8
@ -268,7 +268,8 @@ struct snd_pcm_runtime {
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int overrange;
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snd_pcm_uframes_t avail_max;
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snd_pcm_uframes_t hw_ptr_base; /* Position at buffer restart */
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snd_pcm_uframes_t hw_ptr_interrupt; /* Position at interrupt time*/
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snd_pcm_uframes_t hw_ptr_interrupt; /* Position at interrupt time */
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unsigned long hw_ptr_jiffies; /* Time when hw_ptr is updated */
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/* -- HW params -- */
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snd_pcm_access_t access; /* access mode */
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@ -209,9 +209,11 @@ static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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snd_pcm_uframes_t pos;
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snd_pcm_uframes_t new_hw_ptr, hw_ptr_interrupt, hw_base;
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snd_pcm_sframes_t delta;
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snd_pcm_uframes_t old_hw_ptr, new_hw_ptr, hw_ptr_interrupt, hw_base;
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snd_pcm_sframes_t hdelta, delta;
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unsigned long jdelta;
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old_hw_ptr = runtime->status->hw_ptr;
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pos = snd_pcm_update_hw_ptr_pos(substream, runtime);
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if (pos == SNDRV_PCM_POS_XRUN) {
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xrun(substream);
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@ -247,7 +249,30 @@ static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream)
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new_hw_ptr = hw_base + pos;
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}
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}
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if (delta > runtime->period_size) {
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hdelta = new_hw_ptr - old_hw_ptr;
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jdelta = jiffies - runtime->hw_ptr_jiffies;
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if (((hdelta * HZ) / runtime->rate) > jdelta + HZ/100) {
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delta = jdelta /
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(((runtime->period_size * HZ) / runtime->rate)
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+ HZ/100);
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hw_ptr_error(substream,
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"hw_ptr skipping! [Q] "
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"(pos=%ld, delta=%ld, period=%ld, "
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"jdelta=%lu/%lu/%lu)\n",
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(long)pos, (long)hdelta,
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(long)runtime->period_size, jdelta,
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((hdelta * HZ) / runtime->rate), delta);
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hw_ptr_interrupt = runtime->hw_ptr_interrupt +
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runtime->period_size * delta;
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if (hw_ptr_interrupt >= runtime->boundary)
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hw_ptr_interrupt -= runtime->boundary;
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/* rebase to interrupt position */
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hw_base = new_hw_ptr = hw_ptr_interrupt;
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/* align hw_base to buffer_size */
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hw_base -= hw_base % runtime->buffer_size;
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delta = 0;
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}
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if (delta > runtime->period_size + runtime->period_size / 2) {
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hw_ptr_error(substream,
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"Lost interrupts? "
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"(stream=%i, delta=%ld, intr_ptr=%ld)\n",
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@ -263,6 +288,7 @@ static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream)
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runtime->hw_ptr_base = hw_base;
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runtime->status->hw_ptr = new_hw_ptr;
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runtime->hw_ptr_jiffies = jiffies;
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runtime->hw_ptr_interrupt = hw_ptr_interrupt;
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return snd_pcm_update_hw_ptr_post(substream, runtime);
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@ -275,6 +301,7 @@ int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream)
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snd_pcm_uframes_t pos;
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snd_pcm_uframes_t old_hw_ptr, new_hw_ptr, hw_base;
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snd_pcm_sframes_t delta;
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unsigned long jdelta;
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old_hw_ptr = runtime->status->hw_ptr;
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pos = snd_pcm_update_hw_ptr_pos(substream, runtime);
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@ -286,14 +313,15 @@ int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream)
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new_hw_ptr = hw_base + pos;
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delta = new_hw_ptr - old_hw_ptr;
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jdelta = jiffies - runtime->hw_ptr_jiffies;
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if (delta < 0) {
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delta += runtime->buffer_size;
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if (delta < 0) {
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hw_ptr_error(substream,
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"Unexpected hw_pointer value [2] "
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"(stream=%i, pos=%ld, old_ptr=%ld)\n",
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"(stream=%i, pos=%ld, old_ptr=%ld, jdelta=%li)\n",
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substream->stream, (long)pos,
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(long)old_hw_ptr);
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(long)old_hw_ptr, jdelta);
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return 0;
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}
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hw_base += runtime->buffer_size;
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@ -301,12 +329,13 @@ int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream)
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hw_base = 0;
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new_hw_ptr = hw_base + pos;
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}
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if (delta > runtime->period_size && runtime->periods > 1) {
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if (((delta * HZ) / runtime->rate) > jdelta + HZ/100) {
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hw_ptr_error(substream,
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"hw_ptr skipping! "
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"(pos=%ld, delta=%ld, period=%ld)\n",
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"(pos=%ld, delta=%ld, period=%ld, jdelta=%lu/%lu)\n",
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(long)pos, (long)delta,
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(long)runtime->period_size);
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(long)runtime->period_size, jdelta,
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((delta * HZ) / runtime->rate));
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return 0;
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}
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
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@ -315,6 +344,7 @@ int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream)
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runtime->hw_ptr_base = hw_base;
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runtime->status->hw_ptr = new_hw_ptr;
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runtime->hw_ptr_jiffies = jiffies;
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return snd_pcm_update_hw_ptr_post(substream, runtime);
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}
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@ -1441,6 +1471,7 @@ static int snd_pcm_lib_ioctl_reset(struct snd_pcm_substream *substream,
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runtime->status->hw_ptr %= runtime->buffer_size;
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else
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runtime->status->hw_ptr = 0;
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runtime->hw_ptr_jiffies = jiffies;
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snd_pcm_stream_unlock_irqrestore(substream, flags);
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return 0;
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}
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@ -312,6 +312,9 @@ struct azx_dev {
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unsigned int period_bytes; /* size of the period in bytes */
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unsigned int frags; /* number for period in the play buffer */
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unsigned int fifo_size; /* FIFO size */
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unsigned int start_flag: 1; /* stream full start flag */
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unsigned long start_jiffies; /* start + minimum jiffies */
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unsigned long min_jiffies; /* minimum jiffies before position is valid */
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void __iomem *sd_addr; /* stream descriptor pointer */
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@ -330,7 +333,6 @@ struct azx_dev {
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unsigned int opened :1;
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unsigned int running :1;
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unsigned int irq_pending :1;
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unsigned int irq_ignore :1;
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/*
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* For VIA:
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* A flag to ensure DMA position is 0
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@ -975,7 +977,7 @@ static irqreturn_t azx_interrupt(int irq, void *dev_id)
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struct azx *chip = dev_id;
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struct azx_dev *azx_dev;
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u32 status;
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int i;
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int i, ok;
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spin_lock(&chip->reg_lock);
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@ -991,18 +993,14 @@ static irqreturn_t azx_interrupt(int irq, void *dev_id)
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azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK);
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if (!azx_dev->substream || !azx_dev->running)
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continue;
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/* ignore the first dummy IRQ (due to pos_adj) */
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if (azx_dev->irq_ignore) {
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azx_dev->irq_ignore = 0;
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continue;
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}
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/* check whether this IRQ is really acceptable */
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if (azx_position_ok(chip, azx_dev)) {
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ok = azx_position_ok(chip, azx_dev);
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if (ok == 1) {
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azx_dev->irq_pending = 0;
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spin_unlock(&chip->reg_lock);
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snd_pcm_period_elapsed(azx_dev->substream);
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spin_lock(&chip->reg_lock);
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} else if (chip->bus && chip->bus->workq) {
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} else if (ok == 0 && chip->bus && chip->bus->workq) {
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/* bogus IRQ, process it later */
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azx_dev->irq_pending = 1;
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queue_work(chip->bus->workq,
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@ -1088,7 +1086,6 @@ static int azx_setup_periods(struct azx *chip,
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bdl = (u32 *)azx_dev->bdl.area;
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ofs = 0;
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azx_dev->frags = 0;
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azx_dev->irq_ignore = 0;
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pos_adj = bdl_pos_adj[chip->dev_index];
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if (pos_adj > 0) {
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struct snd_pcm_runtime *runtime = substream->runtime;
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@ -1109,7 +1106,6 @@ static int azx_setup_periods(struct azx *chip,
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&bdl, ofs, pos_adj, 1);
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if (ofs < 0)
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goto error;
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azx_dev->irq_ignore = 1;
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}
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} else
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pos_adj = 0;
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@ -1155,6 +1151,9 @@ static void azx_stream_reset(struct azx *chip, struct azx_dev *azx_dev)
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while (((val = azx_sd_readb(azx_dev, SD_CTL)) & SD_CTL_STREAM_RESET) &&
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--timeout)
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;
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/* reset first position - may not be synced with hw at this time */
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*azx_dev->posbuf = 0;
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}
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/*
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@ -1409,7 +1408,6 @@ static int azx_pcm_open(struct snd_pcm_substream *substream)
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snd_pcm_set_sync(substream);
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mutex_unlock(&chip->open_mutex);
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azx_stream_reset(chip, azx_dev);
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return 0;
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}
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@ -1474,6 +1472,7 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream)
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unsigned int bufsize, period_bytes, format_val;
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int err;
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azx_stream_reset(chip, azx_dev);
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format_val = snd_hda_calc_stream_format(runtime->rate,
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runtime->channels,
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runtime->format,
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@ -1502,6 +1501,8 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream)
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return err;
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}
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azx_dev->min_jiffies = (runtime->period_size * HZ) /
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(runtime->rate * 2);
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azx_setup_controller(chip, azx_dev);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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azx_dev->fifo_size = azx_sd_readw(azx_dev, SD_FIFOSIZE) + 1;
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@ -1518,13 +1519,14 @@ static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
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struct azx *chip = apcm->chip;
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struct azx_dev *azx_dev;
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struct snd_pcm_substream *s;
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int start, nsync = 0, sbits = 0;
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int rstart = 0, start, nsync = 0, sbits = 0;
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int nwait, timeout;
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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rstart = 1;
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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case SNDRV_PCM_TRIGGER_RESUME:
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case SNDRV_PCM_TRIGGER_START:
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start = 1;
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break;
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case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
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@ -1554,6 +1556,10 @@ static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
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if (s->pcm->card != substream->pcm->card)
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continue;
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azx_dev = get_azx_dev(s);
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if (rstart) {
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azx_dev->start_flag = 1;
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azx_dev->start_jiffies = jiffies + azx_dev->min_jiffies;
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}
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if (start)
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azx_stream_start(chip, azx_dev);
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else
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@ -1703,6 +1709,11 @@ static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
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{
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unsigned int pos;
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if (azx_dev->start_flag &&
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time_before_eq(jiffies, azx_dev->start_jiffies))
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return -1; /* bogus (too early) interrupt */
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azx_dev->start_flag = 0;
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pos = azx_get_position(chip, azx_dev);
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if (chip->position_fix == POS_FIX_AUTO) {
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if (!pos) {
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@ -355,6 +355,9 @@ struct ichdev {
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unsigned int fragsize1;
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unsigned int position;
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unsigned int pos_shift;
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unsigned int last_pos;
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unsigned long last_pos_jiffies;
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unsigned int jiffy_to_bytes;
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int frags;
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int lvi;
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int lvi_frag;
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@ -838,7 +841,10 @@ static int snd_intel8x0_pcm_trigger(struct snd_pcm_substream *substream, int cmd
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ichdev->suspended = 0;
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/* fallthru */
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case SNDRV_PCM_TRIGGER_START:
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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val = ICH_IOCE | ICH_STARTBM;
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ichdev->last_pos = ichdev->position;
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ichdev->last_pos_jiffies = jiffies;
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break;
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case SNDRV_PCM_TRIGGER_SUSPEND:
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ichdev->suspended = 1;
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@ -849,9 +855,6 @@ static int snd_intel8x0_pcm_trigger(struct snd_pcm_substream *substream, int cmd
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case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
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val = ICH_IOCE;
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break;
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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val = ICH_IOCE | ICH_STARTBM;
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break;
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default:
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return -EINVAL;
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}
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@ -1045,6 +1048,7 @@ static int snd_intel8x0_pcm_prepare(struct snd_pcm_substream *substream)
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ichdev->pos_shift = (runtime->sample_bits > 16) ? 2 : 1;
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}
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snd_intel8x0_setup_periods(chip, ichdev);
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ichdev->jiffy_to_bytes = (runtime->rate * 4 * ichdev->pos_shift) / HZ;
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return 0;
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}
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|
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@ -1053,7 +1057,7 @@ static snd_pcm_uframes_t snd_intel8x0_pcm_pointer(struct snd_pcm_substream *subs
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struct intel8x0 *chip = snd_pcm_substream_chip(substream);
|
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struct ichdev *ichdev = get_ichdev(substream);
|
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size_t ptr1, ptr;
|
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int civ, timeout = 100;
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int civ, timeout = 10;
|
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unsigned int position;
|
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|
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spin_lock(&chip->reg_lock);
|
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@ -1069,9 +1073,19 @@ static snd_pcm_uframes_t snd_intel8x0_pcm_pointer(struct snd_pcm_substream *subs
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ptr1 == igetword(chip, ichdev->reg_offset + ichdev->roff_picb))
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break;
|
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} while (timeout--);
|
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ptr1 <<= ichdev->pos_shift;
|
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ptr = ichdev->fragsize1 - ptr1;
|
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ptr += position;
|
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if (ptr1 != 0) {
|
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ptr1 <<= ichdev->pos_shift;
|
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ptr = ichdev->fragsize1 - ptr1;
|
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ptr += position;
|
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ichdev->last_pos = ptr;
|
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ichdev->last_pos_jiffies = jiffies;
|
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} else {
|
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ptr1 = jiffies - ichdev->last_pos_jiffies;
|
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if (ptr1)
|
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ptr1 -= 1;
|
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ptr = ichdev->last_pos + ptr1 * ichdev->jiffy_to_bytes;
|
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ptr %= ichdev->size;
|
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}
|
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spin_unlock(&chip->reg_lock);
|
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if (ptr >= ichdev->size)
|
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return 0;
|
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@ -2661,12 +2675,14 @@ static void __devinit intel8x0_measure_ac97_clock(struct intel8x0 *chip)
|
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struct snd_pcm_substream *subs;
|
||||
struct ichdev *ichdev;
|
||||
unsigned long port;
|
||||
unsigned long pos, t;
|
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struct timeval start_time, stop_time;
|
||||
unsigned long pos, pos1, t;
|
||||
int civ, timeout = 1000, attempt = 1;
|
||||
struct timespec start_time, stop_time;
|
||||
|
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if (chip->ac97_bus->clock != 48000)
|
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return; /* specified in module option */
|
||||
|
||||
__again:
|
||||
subs = chip->pcm[0]->streams[0].substream;
|
||||
if (! subs || subs->dma_buffer.bytes < INTEL8X0_TESTBUF_SIZE) {
|
||||
snd_printk(KERN_WARNING "no playback buffer allocated - aborting measure ac97 clock\n");
|
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@ -2674,7 +2690,7 @@ static void __devinit intel8x0_measure_ac97_clock(struct intel8x0 *chip)
|
||||
}
|
||||
ichdev = &chip->ichd[ICHD_PCMOUT];
|
||||
ichdev->physbuf = subs->dma_buffer.addr;
|
||||
ichdev->size = chip->ichd[ICHD_PCMOUT].fragsize = INTEL8X0_TESTBUF_SIZE;
|
||||
ichdev->size = ichdev->fragsize = INTEL8X0_TESTBUF_SIZE;
|
||||
ichdev->substream = NULL; /* don't process interrupts */
|
||||
|
||||
/* set rate */
|
||||
@ -2693,16 +2709,31 @@ static void __devinit intel8x0_measure_ac97_clock(struct intel8x0 *chip)
|
||||
iputbyte(chip, port + ICH_REG_OFF_CR, ICH_IOCE);
|
||||
iputdword(chip, ICHREG(ALI_DMACR), 1 << ichdev->ali_slot);
|
||||
}
|
||||
do_gettimeofday(&start_time);
|
||||
do_posix_clock_monotonic_gettime(&start_time);
|
||||
spin_unlock_irq(&chip->reg_lock);
|
||||
msleep(50);
|
||||
spin_lock_irq(&chip->reg_lock);
|
||||
/* check the position */
|
||||
pos = ichdev->fragsize1;
|
||||
pos -= igetword(chip, ichdev->reg_offset + ichdev->roff_picb) << ichdev->pos_shift;
|
||||
pos += ichdev->position;
|
||||
do {
|
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civ = igetbyte(chip, ichdev->reg_offset + ICH_REG_OFF_CIV);
|
||||
pos1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb);
|
||||
if (pos1 == 0) {
|
||||
udelay(10);
|
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continue;
|
||||
}
|
||||
if (civ == igetbyte(chip, ichdev->reg_offset + ICH_REG_OFF_CIV) &&
|
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pos1 == igetword(chip, ichdev->reg_offset + ichdev->roff_picb))
|
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break;
|
||||
} while (timeout--);
|
||||
if (pos1 == 0) { /* oops, this value is not reliable */
|
||||
pos = 0;
|
||||
} else {
|
||||
pos = ichdev->fragsize1;
|
||||
pos -= pos1 << ichdev->pos_shift;
|
||||
pos += ichdev->position;
|
||||
}
|
||||
chip->in_measurement = 0;
|
||||
do_gettimeofday(&stop_time);
|
||||
do_posix_clock_monotonic_gettime(&stop_time);
|
||||
/* stop */
|
||||
if (chip->device_type == DEVICE_ALI) {
|
||||
iputdword(chip, ICHREG(ALI_DMACR), 1 << (ichdev->ali_slot + 16));
|
||||
@ -2717,19 +2748,37 @@ static void __devinit intel8x0_measure_ac97_clock(struct intel8x0 *chip)
|
||||
iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
|
||||
spin_unlock_irq(&chip->reg_lock);
|
||||
|
||||
t = stop_time.tv_sec - start_time.tv_sec;
|
||||
t *= 1000000;
|
||||
t += stop_time.tv_usec - start_time.tv_usec;
|
||||
printk(KERN_INFO "%s: measured %lu usecs\n", __func__, t);
|
||||
if (t == 0) {
|
||||
snd_printk(KERN_ERR "?? calculation error..\n");
|
||||
if (pos == 0) {
|
||||
snd_printk(KERN_ERR "intel8x0: measure - unreliable DMA position..\n");
|
||||
__retry:
|
||||
if (attempt < 2) {
|
||||
attempt++;
|
||||
goto __again;
|
||||
}
|
||||
return;
|
||||
}
|
||||
pos = (pos / 4) * 1000;
|
||||
|
||||
pos /= 4;
|
||||
t = stop_time.tv_sec - start_time.tv_sec;
|
||||
t *= 1000000;
|
||||
t += (stop_time.tv_nsec - start_time.tv_nsec) / 1000;
|
||||
printk(KERN_INFO "%s: measured %lu usecs (%lu samples)\n", __func__, t, pos);
|
||||
if (t == 0) {
|
||||
snd_printk(KERN_ERR "intel8x0: ?? calculation error..\n");
|
||||
goto __retry;
|
||||
}
|
||||
pos *= 1000;
|
||||
pos = (pos / t) * 1000 + ((pos % t) * 1000) / t;
|
||||
if (pos < 40000 || pos >= 60000)
|
||||
if (pos < 40000 || pos >= 60000) {
|
||||
/* abnormal value. hw problem? */
|
||||
printk(KERN_INFO "intel8x0: measured clock %ld rejected\n", pos);
|
||||
goto __retry;
|
||||
} else if (pos > 40500 && pos < 41500)
|
||||
/* first exception - 41000Hz reference clock */
|
||||
chip->ac97_bus->clock = 41000;
|
||||
else if (pos > 43600 && pos < 44600)
|
||||
/* second exception - 44100HZ reference clock */
|
||||
chip->ac97_bus->clock = 44100;
|
||||
else if (pos < 47500 || pos > 48500)
|
||||
/* not 48000Hz, tuning the clock.. */
|
||||
chip->ac97_bus->clock = (chip->ac97_bus->clock * 48000) / pos;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user