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Diffstat (limited to 'sound/core/pcm_native.c')
-rw-r--r--sound/core/pcm_native.c66
1 files changed, 46 insertions, 20 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index d233cb3b41d8..621883e71194 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -2685,6 +2685,13 @@ int snd_pcm_open_substream(struct snd_pcm *pcm, int stream,
goto error;
}
+ /* automatically set EXPLICIT_SYNC flag in the managed mode whenever
+ * the DMA buffer requires it
+ */
+ if (substream->managed_buffer_alloc &&
+ substream->dma_buffer.dev.need_sync)
+ substream->runtime->hw.info |= SNDRV_PCM_INFO_EXPLICIT_SYNC;
+
*rsubstream = substream;
return 0;
@@ -2912,6 +2919,8 @@ static snd_pcm_sframes_t snd_pcm_rewind(struct snd_pcm_substream *substream,
ret = rewind_appl_ptr(substream, frames,
snd_pcm_hw_avail(substream));
snd_pcm_stream_unlock_irq(substream);
+ if (ret >= 0)
+ snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_DEVICE);
return ret;
}
@@ -2929,35 +2938,31 @@ static snd_pcm_sframes_t snd_pcm_forward(struct snd_pcm_substream *substream,
ret = forward_appl_ptr(substream, frames,
snd_pcm_avail(substream));
snd_pcm_stream_unlock_irq(substream);
+ if (ret >= 0)
+ snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_DEVICE);
return ret;
}
-static int snd_pcm_hwsync(struct snd_pcm_substream *substream)
-{
- int err;
-
- snd_pcm_stream_lock_irq(substream);
- err = do_pcm_hwsync(substream);
- snd_pcm_stream_unlock_irq(substream);
- return err;
-}
-
static int snd_pcm_delay(struct snd_pcm_substream *substream,
snd_pcm_sframes_t *delay)
{
int err;
- snd_pcm_sframes_t n = 0;
snd_pcm_stream_lock_irq(substream);
err = do_pcm_hwsync(substream);
- if (!err)
- n = snd_pcm_calc_delay(substream);
+ if (delay && !err)
+ *delay = snd_pcm_calc_delay(substream);
snd_pcm_stream_unlock_irq(substream);
- if (!err)
- *delay = n;
+ snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_CPU);
+
return err;
}
+static inline int snd_pcm_hwsync(struct snd_pcm_substream *substream)
+{
+ return snd_pcm_delay(substream, NULL);
+}
+
static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream,
struct snd_pcm_sync_ptr __user *_sync_ptr)
{
@@ -3000,6 +3005,8 @@ static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream,
sync_ptr.s.status.suspended_state = status->suspended_state;
sync_ptr.s.status.audio_tstamp = status->audio_tstamp;
snd_pcm_stream_unlock_irq(substream);
+ if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL))
+ snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_DEVICE);
if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr)))
return -EFAULT;
return 0;
@@ -3096,6 +3103,8 @@ static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream,
sstatus.suspended_state = status->suspended_state;
sstatus.audio_tstamp = status->audio_tstamp;
snd_pcm_stream_unlock_irq(substream);
+ if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
+ snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_DEVICE);
if (put_user(sstatus.state, &src->s.status.state) ||
put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
put_user(sstatus.tstamp.tv_sec, &src->s.status.tstamp_sec) ||
@@ -3218,6 +3227,9 @@ static int snd_pcm_common_ioctl(struct file *file,
if (PCM_RUNTIME_CHECK(substream))
return -ENXIO;
+ if (substream->runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED)
+ return -EBADFD;
+
res = snd_power_wait(substream->pcm->card);
if (res < 0)
return res;
@@ -3272,7 +3284,7 @@ static int snd_pcm_common_ioctl(struct file *file,
return snd_pcm_hwsync(substream);
case SNDRV_PCM_IOCTL_DELAY:
{
- snd_pcm_sframes_t delay;
+ snd_pcm_sframes_t delay = 0;
snd_pcm_sframes_t __user *res = arg;
int err;
@@ -3344,6 +3356,9 @@ int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream,
snd_pcm_uframes_t *frames = arg;
snd_pcm_sframes_t result;
+ if (substream->runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED)
+ return -EBADFD;
+
switch (cmd) {
case SNDRV_PCM_IOCTL_FORWARD:
{
@@ -3386,7 +3401,8 @@ static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count,
if (PCM_RUNTIME_CHECK(substream))
return -ENXIO;
runtime = substream->runtime;
- if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
+ if (runtime->status->state == SNDRV_PCM_STATE_OPEN ||
+ runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED)
return -EBADFD;
if (!frame_aligned(runtime, count))
return -EINVAL;
@@ -3410,7 +3426,8 @@ static ssize_t snd_pcm_write(struct file *file, const char __user *buf,
if (PCM_RUNTIME_CHECK(substream))
return -ENXIO;
runtime = substream->runtime;
- if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
+ if (runtime->status->state == SNDRV_PCM_STATE_OPEN ||
+ runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED)
return -EBADFD;
if (!frame_aligned(runtime, count))
return -EINVAL;
@@ -3436,7 +3453,8 @@ static ssize_t snd_pcm_readv(struct kiocb *iocb, struct iov_iter *to)
if (PCM_RUNTIME_CHECK(substream))
return -ENXIO;
runtime = substream->runtime;
- if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
+ if (runtime->status->state == SNDRV_PCM_STATE_OPEN ||
+ runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED)
return -EBADFD;
if (!iter_is_iovec(to))
return -EINVAL;
@@ -3472,7 +3490,8 @@ static ssize_t snd_pcm_writev(struct kiocb *iocb, struct iov_iter *from)
if (PCM_RUNTIME_CHECK(substream))
return -ENXIO;
runtime = substream->runtime;
- if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
+ if (runtime->status->state == SNDRV_PCM_STATE_OPEN ||
+ runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED)
return -EBADFD;
if (!iter_is_iovec(from))
return -EINVAL;
@@ -3511,6 +3530,9 @@ static __poll_t snd_pcm_poll(struct file *file, poll_table *wait)
return ok | EPOLLERR;
runtime = substream->runtime;
+ if (runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED)
+ return ok | EPOLLERR;
+
poll_wait(file, &runtime->sleep, wait);
mask = 0;
@@ -3820,6 +3842,8 @@ static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area)
substream = pcm_file->substream;
if (PCM_RUNTIME_CHECK(substream))
return -ENXIO;
+ if (substream->runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED)
+ return -EBADFD;
offset = area->vm_pgoff << PAGE_SHIFT;
switch (offset) {
@@ -3856,6 +3880,8 @@ static int snd_pcm_fasync(int fd, struct file * file, int on)
if (PCM_RUNTIME_CHECK(substream))
return -ENXIO;
runtime = substream->runtime;
+ if (runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED)
+ return -EBADFD;
return fasync_helper(fd, file, on, &runtime->fasync);
}
generated by cgit (git 2.34.1) at 2024-05-30 19:25:55 +0000