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authorTakashi Iwai <tiwai@suse.de>2010-01-18 14:58:57 +0100
committerTakashi Iwai <tiwai@suse.de>2010-01-18 15:00:34 +0100
commitc32d977b8157bf67cdf47729ce7dd054a26eb534 (patch)
treefedbd1c0d4382e88362abf81f719e6f127e19fa7 /sound
parent3e879d7bac705be4813a0ec9560cbe31db4b269f (diff)
ALSA: pcm - Call pgprot_noncached() for vmalloc'ed buffers
pgprot_noncached() can be set for vmalloc'ed buffers safely, and we'd need non-cached behavior more or less, even for the intermediate ring- buffers. Now snd_pcm_lib_mmap_vmalloc() is added as the common PCM mmap callback that is coupled with snd_pcm_lib_alloc_vmalloc_buffer() & co. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/core/pcm_native.c9
-rw-r--r--sound/drivers/vx/vx_pcm.c2
-rw-r--r--sound/mips/sgio2audio.c3
-rw-r--r--sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c1
-rw-r--r--sound/usb/ua101.c2
-rw-r--r--sound/usb/usbaudio.c2
6 files changed, 19 insertions, 0 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 5df0d21f18b..88fff44702a 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -3176,6 +3176,15 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream,
EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem);
#endif /* SNDRV_PCM_INFO_MMAP */
+/* mmap callback with pgprot_noncached */
+int snd_pcm_lib_mmap_noncached(struct snd_pcm_substream *substream,
+ struct vm_area_struct *area)
+{
+ area->vm_page_prot = pgprot_noncached(area->vm_page_prot);
+ return snd_pcm_default_mmap(substream, area);
+}
+EXPORT_SYMBOL(snd_pcm_lib_mmap_noncached);
+
/*
* mmap DMA buffer
*/
diff --git a/sound/drivers/vx/vx_pcm.c b/sound/drivers/vx/vx_pcm.c
index c8385d26a16..35a2f71a6af 100644
--- a/sound/drivers/vx/vx_pcm.c
+++ b/sound/drivers/vx/vx_pcm.c
@@ -905,6 +905,7 @@ static struct snd_pcm_ops vx_pcm_playback_ops = {
.trigger = vx_pcm_trigger,
.pointer = vx_pcm_playback_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
};
@@ -1125,6 +1126,7 @@ static struct snd_pcm_ops vx_pcm_capture_ops = {
.trigger = vx_pcm_trigger,
.pointer = vx_pcm_capture_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
};
diff --git a/sound/mips/sgio2audio.c b/sound/mips/sgio2audio.c
index 9b486beeb93..6aff217379d 100644
--- a/sound/mips/sgio2audio.c
+++ b/sound/mips/sgio2audio.c
@@ -691,6 +691,7 @@ static struct snd_pcm_ops snd_sgio2audio_playback1_ops = {
.trigger = snd_sgio2audio_pcm_trigger,
.pointer = snd_sgio2audio_pcm_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
};
static struct snd_pcm_ops snd_sgio2audio_playback2_ops = {
@@ -703,6 +704,7 @@ static struct snd_pcm_ops snd_sgio2audio_playback2_ops = {
.trigger = snd_sgio2audio_pcm_trigger,
.pointer = snd_sgio2audio_pcm_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
};
static struct snd_pcm_ops snd_sgio2audio_capture_ops = {
@@ -715,6 +717,7 @@ static struct snd_pcm_ops snd_sgio2audio_capture_ops = {
.trigger = snd_sgio2audio_pcm_trigger,
.pointer = snd_sgio2audio_pcm_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
};
/*
diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c b/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c
index 0afa683c900..0d668f47162 100644
--- a/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c
+++ b/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c
@@ -277,6 +277,7 @@ static struct snd_pcm_ops pdacf_pcm_capture_ops = {
.trigger = pdacf_pcm_trigger,
.pointer = pdacf_pcm_capture_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
};
diff --git a/sound/usb/ua101.c b/sound/usb/ua101.c
index 16dc7bd5e12..4f4ccdf70dd 100644
--- a/sound/usb/ua101.c
+++ b/sound/usb/ua101.c
@@ -911,6 +911,7 @@ static struct snd_pcm_ops capture_pcm_ops = {
.trigger = capture_pcm_trigger,
.pointer = capture_pcm_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
};
static struct snd_pcm_ops playback_pcm_ops = {
@@ -923,6 +924,7 @@ static struct snd_pcm_ops playback_pcm_ops = {
.trigger = playback_pcm_trigger,
.pointer = playback_pcm_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
};
static const struct uac_format_type_i_discrete_descriptor *
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 4ada98e1630..b8e0b8fda60 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -1997,6 +1997,7 @@ static struct snd_pcm_ops snd_usb_playback_ops = {
.trigger = snd_usb_pcm_playback_trigger,
.pointer = snd_usb_pcm_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
};
static struct snd_pcm_ops snd_usb_capture_ops = {
@@ -2009,6 +2010,7 @@ static struct snd_pcm_ops snd_usb_capture_ops = {
.trigger = snd_usb_pcm_capture_trigger,
.pointer = snd_usb_pcm_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
};