diff options
Diffstat (limited to 'sound/core')
44 files changed, 1332 insertions, 1290 deletions
diff --git a/sound/core/Kconfig b/sound/core/Kconfig index 9749f9e8b45c..6e937a8146a1 100644 --- a/sound/core/Kconfig +++ b/sound/core/Kconfig @@ -18,8 +18,12 @@ config SND_DMAENGINE_PCM config SND_HWDEP tristate +config SND_SEQ_DEVICE + tristate + config SND_RAWMIDI tristate + select SND_SEQ_DEVICE if SND_SEQUENCER != n config SND_COMPRESS_OFFLOAD tristate @@ -33,38 +37,15 @@ config SND_JACK_INPUT_DEV depends on SND_JACK default y if INPUT=y || INPUT=SND -config SND_SEQUENCER - tristate "Sequencer support" - select SND_TIMER - help - Say Y or M to enable MIDI sequencer and router support. This - feature allows routing and enqueueing of MIDI events. Events - can be processed at a given time. - - Many programs require this feature, so you should enable it - unless you know what you're doing. - -config SND_SEQ_DUMMY - tristate "Sequencer dummy client" - depends on SND_SEQUENCER - help - Say Y here to enable the dummy sequencer client. This client - is a simple MIDI-through client: all normal input events are - redirected to the output port immediately. - - You don't need this unless you want to connect many MIDI - devices or applications together. - - To compile this driver as a module, choose M here: the module - will be called snd-seq-dummy. - config SND_OSSEMUL + bool "Enable OSS Emulation" select SOUND_OSS_CORE - bool + help + This option enables the build of OSS emulation layer. config SND_MIXER_OSS tristate "OSS Mixer API" - select SND_OSSEMUL + depends on SND_OSSEMUL help To enable OSS mixer API emulation (/dev/mixer*), say Y here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>. @@ -76,7 +57,7 @@ config SND_MIXER_OSS config SND_PCM_OSS tristate "OSS PCM (digital audio) API" - select SND_OSSEMUL + depends on SND_OSSEMUL select SND_PCM help To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y @@ -107,20 +88,6 @@ config SND_PCM_TIMER For some embedded devices, we may disable it to reduce memory footprint, about 20KB on x86_64 platform. -config SND_SEQUENCER_OSS - bool "OSS Sequencer API" - depends on SND_SEQUENCER - select SND_OSSEMUL - help - Say Y here to enable OSS sequencer emulation (both - /dev/sequencer and /dev/music interfaces). - - Many programs still use the OSS API, so say Y. - - If you choose M in "Sequencer support" (SND_SEQUENCER), - this will be compiled as a module. The module will be called - snd-seq-oss. - config SND_HRTIMER tristate "HR-timer backend support" depends on HIGH_RES_TIMERS @@ -133,14 +100,6 @@ config SND_HRTIMER To compile this driver as a module, choose M here: the module will be called snd-hrtimer. -config SND_SEQ_HRTIMER_DEFAULT - bool "Use HR-timer as default sequencer timer" - depends on SND_HRTIMER && SND_SEQUENCER - default y - help - Say Y here to use the HR-timer backend as the default sequencer - timer. - config SND_DYNAMIC_MINORS bool "Dynamic device file minor numbers" help diff --git a/sound/core/Makefile b/sound/core/Makefile index e85d9dd12c2d..e2066e2ef9f8 100644 --- a/sound/core/Makefile +++ b/sound/core/Makefile @@ -22,6 +22,7 @@ snd-pcm-$(CONFIG_SND_PCM_IEC958) += pcm_iec958.o # for trace-points CFLAGS_pcm_lib.o := -I$(src) +CFLAGS_pcm_native.o := -I$(src) snd-pcm-dmaengine-objs := pcm_dmaengine.o @@ -30,6 +31,7 @@ snd-timer-objs := timer.o snd-hrtimer-objs := hrtimer.o snd-rtctimer-objs := rtctimer.o snd-hwdep-objs := hwdep.o +snd-seq-device-objs := seq_device.o snd-compress-objs := compress_offload.o @@ -39,6 +41,7 @@ obj-$(CONFIG_SND_TIMER) += snd-timer.o obj-$(CONFIG_SND_HRTIMER) += snd-hrtimer.o obj-$(CONFIG_SND_PCM) += snd-pcm.o obj-$(CONFIG_SND_DMAENGINE_PCM) += snd-pcm-dmaengine.o +obj-$(CONFIG_SND_SEQ_DEVICE) += snd-seq-device.o obj-$(CONFIG_SND_RAWMIDI) += snd-rawmidi.o obj-$(CONFIG_SND_OSSEMUL) += oss/ diff --git a/sound/core/control.c b/sound/core/control.c index c109b82eef4b..3c6be1452e35 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -747,65 +747,45 @@ static int snd_ctl_card_info(struct snd_card *card, struct snd_ctl_file * ctl, static int snd_ctl_elem_list(struct snd_card *card, struct snd_ctl_elem_list __user *_list) { - struct list_head *plist; struct snd_ctl_elem_list list; struct snd_kcontrol *kctl; - struct snd_ctl_elem_id *dst, *id; + struct snd_ctl_elem_id id; unsigned int offset, space, jidx; + int err = 0; if (copy_from_user(&list, _list, sizeof(list))) return -EFAULT; offset = list.offset; space = list.space; - /* try limit maximum space */ - if (space > 16384) - return -ENOMEM; + + down_read(&card->controls_rwsem); + list.count = card->controls_count; + list.used = 0; if (space > 0) { - /* allocate temporary buffer for atomic operation */ - dst = vmalloc(space * sizeof(struct snd_ctl_elem_id)); - if (dst == NULL) - return -ENOMEM; - down_read(&card->controls_rwsem); - list.count = card->controls_count; - plist = card->controls.next; - while (plist != &card->controls) { - if (offset == 0) - break; - kctl = snd_kcontrol(plist); - if (offset < kctl->count) - break; - offset -= kctl->count; - plist = plist->next; - } - list.used = 0; - id = dst; - while (space > 0 && plist != &card->controls) { - kctl = snd_kcontrol(plist); - for (jidx = offset; space > 0 && jidx < kctl->count; jidx++) { - snd_ctl_build_ioff(id, kctl, jidx); - id++; - space--; + list_for_each_entry(kctl, &card->controls, list) { + if (offset >= kctl->count) { + offset -= kctl->count; + continue; + } + for (jidx = offset; jidx < kctl->count; jidx++) { + snd_ctl_build_ioff(&id, kctl, jidx); + if (copy_to_user(list.pids + list.used, &id, + sizeof(id))) { + err = -EFAULT; + goto out; + } list.used++; + if (!--space) + goto out; } - plist = plist->next; offset = 0; } - up_read(&card->controls_rwsem); - if (list.used > 0 && - copy_to_user(list.pids, dst, - list.used * sizeof(struct snd_ctl_elem_id))) { - vfree(dst); - return -EFAULT; - } - vfree(dst); - } else { - down_read(&card->controls_rwsem); - list.count = card->controls_count; - up_read(&card->controls_rwsem); } - if (copy_to_user(_list, &list, sizeof(list))) - return -EFAULT; - return 0; + out: + up_read(&card->controls_rwsem); + if (!err && copy_to_user(_list, &list, sizeof(list))) + err = -EFAULT; + return err; } static bool validate_element_member_dimension(struct snd_ctl_elem_info *info) @@ -1577,7 +1557,7 @@ static ssize_t snd_ctl_read(struct file *file, char __user *buffer, struct snd_ctl_event ev; struct snd_kctl_event *kev; while (list_empty(&ctl->events)) { - wait_queue_t wait; + wait_queue_entry_t wait; if ((file->f_flags & O_NONBLOCK) != 0 || result > 0) { err = -EAGAIN; goto __end_lock; diff --git a/sound/core/ctljack.c b/sound/core/ctljack.c index 84a3cd683068..0249d5e6ac23 100644 --- a/sound/core/ctljack.c +++ b/sound/core/ctljack.c @@ -23,7 +23,7 @@ static int jack_detect_kctl_get(struct snd_kcontrol *kcontrol, return 0; } -static struct snd_kcontrol_new jack_detect_kctl = { +static const struct snd_kcontrol_new jack_detect_kctl = { /* name is filled later */ .iface = SNDRV_CTL_ELEM_IFACE_CARD, .access = SNDRV_CTL_ELEM_ACCESS_READ, diff --git a/sound/core/hwdep.c b/sound/core/hwdep.c index 9602a7e38d8a..a73baa1242be 100644 --- a/sound/core/hwdep.c +++ b/sound/core/hwdep.c @@ -85,7 +85,7 @@ static int snd_hwdep_open(struct inode *inode, struct file * file) int major = imajor(inode); struct snd_hwdep *hw; int err; - wait_queue_t wait; + wait_queue_entry_t wait; if (major == snd_major) { hw = snd_lookup_minor_data(iminor(inode), diff --git a/sound/core/info.c b/sound/core/info.c index 8ab72e0f5932..bcf6a48cc70d 100644 --- a/sound/core/info.c +++ b/sound/core/info.c @@ -344,12 +344,12 @@ static ssize_t snd_info_text_entry_write(struct file *file, } } if (next > buf->len) { - char *nbuf = krealloc(buf->buffer, PAGE_ALIGN(next), - GFP_KERNEL | __GFP_ZERO); + char *nbuf = kvzalloc(PAGE_ALIGN(next), GFP_KERNEL); if (!nbuf) { err = -ENOMEM; goto error; } + kvfree(buf->buffer); buf->buffer = nbuf; buf->len = PAGE_ALIGN(next); } @@ -427,7 +427,7 @@ static int snd_info_text_entry_release(struct inode *inode, struct file *file) single_release(inode, file); kfree(data->rbuffer); if (data->wbuffer) { - kfree(data->wbuffer->buffer); + kvfree(data->wbuffer->buffer); kfree(data->wbuffer); } @@ -652,7 +652,6 @@ int snd_info_get_line(struct snd_info_buffer *buffer, char *line, int len) *line = '\0'; return 0; } - EXPORT_SYMBOL(snd_info_get_line); /** @@ -690,7 +689,6 @@ const char *snd_info_get_str(char *dest, const char *src, int len) src++; return src; } - EXPORT_SYMBOL(snd_info_get_str); /* @@ -748,7 +746,6 @@ struct snd_info_entry *snd_info_create_module_entry(struct module * module, entry->module = module; return entry; } - EXPORT_SYMBOL(snd_info_create_module_entry); /** @@ -772,7 +769,6 @@ struct snd_info_entry *snd_info_create_card_entry(struct snd_card *card, } return entry; } - EXPORT_SYMBOL(snd_info_create_card_entry); static void snd_info_disconnect(struct snd_info_entry *entry) @@ -815,7 +811,6 @@ void snd_info_free_entry(struct snd_info_entry * entry) entry->private_free(entry); kfree(entry); } - EXPORT_SYMBOL(snd_info_free_entry); /** @@ -858,7 +853,6 @@ int snd_info_register(struct snd_info_entry * entry) mutex_unlock(&info_mutex); return 0; } - EXPORT_SYMBOL(snd_info_register); /* diff --git a/sound/core/info_oss.c b/sound/core/info_oss.c index 1478c8dfd473..f479374b6bd8 100644 --- a/sound/core/info_oss.c +++ b/sound/core/info_oss.c @@ -61,7 +61,6 @@ int snd_oss_info_register(int dev, int num, char *string) mutex_unlock(&strings); return 0; } - EXPORT_SYMBOL(snd_oss_info_register); static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev) diff --git a/sound/core/init.c b/sound/core/init.c index 6bda8436d765..b4365bcf28a7 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -452,7 +452,6 @@ int snd_card_disconnect(struct snd_card *card) #endif return 0; } - EXPORT_SYMBOL(snd_card_disconnect); static int snd_card_do_free(struct snd_card *card) @@ -718,7 +717,7 @@ int snd_card_add_dev_attr(struct snd_card *card, dev_err(card->dev, "Too many groups assigned\n"); return -ENOSPC; -}; +} EXPORT_SYMBOL_GPL(snd_card_add_dev_attr); /** @@ -775,7 +774,6 @@ int snd_card_register(struct snd_card *card) #endif return 0; } - EXPORT_SYMBOL(snd_card_register); #ifdef CONFIG_SND_PROC_FS @@ -895,7 +893,6 @@ int snd_component_add(struct snd_card *card, const char *component) strcat(card->components, component); return 0; } - EXPORT_SYMBOL(snd_component_add); /** @@ -930,7 +927,6 @@ int snd_card_file_add(struct snd_card *card, struct file *file) spin_unlock(&card->files_lock); return 0; } - EXPORT_SYMBOL(snd_card_file_add); /** @@ -972,7 +968,6 @@ int snd_card_file_remove(struct snd_card *card, struct file *file) put_device(&card->card_dev); return 0; } - EXPORT_SYMBOL(snd_card_file_remove); #ifdef CONFIG_PM @@ -989,7 +984,7 @@ EXPORT_SYMBOL(snd_card_file_remove); */ int snd_power_wait(struct snd_card *card, unsigned int power_state) { - wait_queue_t wait; + wait_queue_entry_t wait; int result = 0; /* fastpath */ @@ -1012,6 +1007,5 @@ int snd_power_wait(struct snd_card *card, unsigned int power_state) remove_wait_queue(&card->power_sleep, &wait); return result; } - EXPORT_SYMBOL(snd_power_wait); #endif /* CONFIG_PM */ diff --git a/sound/core/isadma.c b/sound/core/isadma.c index 31e8544d7f2d..7a8515abb5f9 100644 --- a/sound/core/isadma.c +++ b/sound/core/isadma.c @@ -55,7 +55,6 @@ void snd_dma_program(unsigned long dma, enable_dma(dma); release_dma_lock(flags); } - EXPORT_SYMBOL(snd_dma_program); /** @@ -73,7 +72,6 @@ void snd_dma_disable(unsigned long dma) disable_dma(dma); release_dma_lock(flags); } - EXPORT_SYMBOL(snd_dma_disable); /** @@ -113,5 +111,4 @@ unsigned int snd_dma_pointer(unsigned long dma, unsigned int size) else return size - result; } - EXPORT_SYMBOL(snd_dma_pointer); diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c index f05cb6a8cbe0..7f89d3c79a4b 100644 --- a/sound/core/memalloc.c +++ b/sound/core/memalloc.c @@ -54,6 +54,7 @@ void *snd_malloc_pages(size_t size, gfp_t gfp_flags) pg = get_order(size); return (void *) __get_free_pages(gfp_flags, pg); } +EXPORT_SYMBOL(snd_malloc_pages); /** * snd_free_pages - release the pages @@ -71,6 +72,7 @@ void snd_free_pages(void *ptr, size_t size) pg = get_order(size); free_pages((unsigned long) ptr, pg); } +EXPORT_SYMBOL(snd_free_pages); /* * @@ -217,6 +219,7 @@ int snd_dma_alloc_pages(int type, struct device *device, size_t size, dmab->bytes = size; return 0; } +EXPORT_SYMBOL(snd_dma_alloc_pages); /** * snd_dma_alloc_pages_fallback - allocate the buffer area according to the given type with fallback @@ -254,6 +257,7 @@ int snd_dma_alloc_pages_fallback(int type, struct device *device, size_t size, return -ENOMEM; return 0; } +EXPORT_SYMBOL(snd_dma_alloc_pages_fallback); /** @@ -287,13 +291,4 @@ void snd_dma_free_pages(struct snd_dma_buffer *dmab) pr_err("snd-malloc: invalid device type %d\n", dmab->dev.type); } } - -/* - * exports - */ -EXPORT_SYMBOL(snd_dma_alloc_pages); -EXPORT_SYMBOL(snd_dma_alloc_pages_fallback); EXPORT_SYMBOL(snd_dma_free_pages); - -EXPORT_SYMBOL(snd_malloc_pages); -EXPORT_SYMBOL(snd_free_pages); diff --git a/sound/core/memory.c b/sound/core/memory.c index 4cd664efad77..19c9ea90d9bf 100644 --- a/sound/core/memory.c +++ b/sound/core/memory.c @@ -55,7 +55,6 @@ int copy_to_user_fromio(void __user *dst, const volatile void __iomem *src, size return 0; #endif } - EXPORT_SYMBOL(copy_to_user_fromio); /** @@ -88,5 +87,4 @@ int copy_from_user_toio(volatile void __iomem *dst, const void __user *src, size return 0; #endif } - EXPORT_SYMBOL(copy_from_user_toio); diff --git a/sound/core/misc.c b/sound/core/misc.c index 21b228046e88..0f818d593c9e 100644 --- a/sound/core/misc.c +++ b/sound/core/misc.c @@ -48,7 +48,6 @@ void release_and_free_resource(struct resource *res) kfree(res); } } - EXPORT_SYMBOL(release_and_free_resource); #ifdef CONFIG_SND_VERBOSE_PRINTK diff --git a/sound/core/oss/io.c b/sound/core/oss/io.c index 6faa1d719206..d870b2d93135 100644 --- a/sound/core/oss/io.c +++ b/sound/core/oss/io.c @@ -26,9 +26,9 @@ #include "pcm_plugin.h" #define pcm_write(plug,buf,count) snd_pcm_oss_write3(plug,buf,count,1) -#define pcm_writev(plug,vec,count) snd_pcm_oss_writev3(plug,vec,count,1) +#define pcm_writev(plug,vec,count) snd_pcm_oss_writev3(plug,vec,count) #define pcm_read(plug,buf,count) snd_pcm_oss_read3(plug,buf,count,1) -#define pcm_readv(plug,vec,count) snd_pcm_oss_readv3(plug,vec,count,1) +#define pcm_readv(plug,vec,count) snd_pcm_oss_readv3(plug,vec,count) /* * Basic io plugin diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c index 2ff9c12d664a..379bf486ccc7 100644 --- a/sound/core/oss/mixer_oss.c +++ b/sound/core/oss/mixer_oss.c @@ -395,6 +395,7 @@ int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned l fmixer.mixer = card->mixer_oss; return snd_mixer_oss_ioctl1(&fmixer, cmd, arg); } +EXPORT_SYMBOL(snd_mixer_oss_ioctl_card); #ifdef CONFIG_COMPAT /* all compatible */ @@ -1425,5 +1426,3 @@ static void __exit alsa_mixer_oss_exit(void) module_init(alsa_mixer_oss_init) module_exit(alsa_mixer_oss_exit) - -EXPORT_SYMBOL(snd_mixer_oss_ioctl_card); diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index 36baf962f9b0..e49f448ee04f 100644 --- a/sound/core/oss/pcm_oss.c +++ b/sound/core/oss/pcm_oss.c @@ -67,18 +67,6 @@ static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file); static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file); static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file); -static inline mm_segment_t snd_enter_user(void) -{ - mm_segment_t fs = get_fs(); - set_fs(get_ds()); - return fs; -} - -static inline void snd_leave_user(mm_segment_t fs) -{ - set_fs(fs); -} - /* * helper functions to process hw_params */ @@ -799,7 +787,7 @@ static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream, static int choose_rate(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, unsigned int best_rate) { - struct snd_interval *it; + const struct snd_interval *it; struct snd_pcm_hw_params *save; unsigned int rate, prev; @@ -807,7 +795,7 @@ static int choose_rate(struct snd_pcm_substream *substream, if (save == NULL) return -ENOMEM; *save = *params; - it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); + it = hw_param_interval_c(save, SNDRV_PCM_HW_PARAM_RATE); /* try multiples of the best rate */ rate = best_rate; @@ -848,7 +836,7 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream, int direct; snd_pcm_format_t format, sformat; int n; - struct snd_mask sformat_mask; + const struct snd_mask *sformat_mask; struct snd_mask mask; if (trylock) { @@ -891,18 +879,18 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream, format = snd_pcm_oss_format_from(runtime->oss.format); - sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); + sformat_mask = hw_param_mask_c(sparams, SNDRV_PCM_HW_PARAM_FORMAT); if (direct) sformat = format; else - sformat = snd_pcm_plug_slave_format(format, &sformat_mask); + sformat = snd_pcm_plug_slave_format(format, sformat_mask); if ((__force int)sformat < 0 || - !snd_mask_test(&sformat_mask, (__force int)sformat)) { + !snd_mask_test(sformat_mask, (__force int)sformat)) { for (sformat = (__force snd_pcm_format_t)0; (__force int)sformat <= (__force int)SNDRV_PCM_FORMAT_LAST; sformat = (__force snd_pcm_format_t)((__force int)sformat + 1)) { - if (snd_mask_test(&sformat_mask, (__force int)sformat) && + if (snd_mask_test(sformat_mask, (__force int)sformat) && snd_pcm_oss_format_to(sformat) >= 0) break; } @@ -1191,14 +1179,8 @@ snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const if (ret < 0) break; } - if (in_kernel) { - mm_segment_t fs; - fs = snd_enter_user(); - ret = snd_pcm_lib_write(substream, (void __force __user *)ptr, frames); - snd_leave_user(fs); - } else { - ret = snd_pcm_lib_write(substream, (void __force __user *)ptr, frames); - } + ret = __snd_pcm_lib_xfer(substream, (void *)ptr, true, + frames, in_kernel); if (ret != -EPIPE && ret != -ESTRPIPE) break; /* test, if we can't store new data, because the stream */ @@ -1234,14 +1216,8 @@ snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *p ret = snd_pcm_oss_capture_position_fixup(substream, &delay); if (ret < 0) break; - if (in_kernel) { - mm_segment_t fs; - fs = snd_enter_user(); - ret = snd_pcm_lib_read(substream, (void __force __user *)ptr, frames); - snd_leave_user(fs); - } else { - ret = snd_pcm_lib_read(substream, (void __force __user *)ptr, frames); - } + ret = __snd_pcm_lib_xfer(substream, (void *)ptr, true, + frames, in_kernel); if (ret == -EPIPE) { if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); @@ -1256,7 +1232,8 @@ snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *p return ret; } -snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) +#ifdef CONFIG_SND_PCM_OSS_PLUGINS +snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames) { struct snd_pcm_runtime *runtime = substream->runtime; int ret; @@ -1273,14 +1250,7 @@ snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void if (ret < 0) break; } - if (in_kernel) { - mm_segment_t fs; - fs = snd_enter_user(); - ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); - snd_leave_user(fs); - } else { - ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); - } + ret = snd_pcm_kernel_writev(substream, bufs, frames); if (ret != -EPIPE && ret != -ESTRPIPE) break; @@ -1292,7 +1262,7 @@ snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void return ret; } -snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) +snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames) { struct snd_pcm_runtime *runtime = substream->runtime; int ret; @@ -1313,19 +1283,13 @@ snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void * if (ret < 0) break; } - if (in_kernel) { - mm_segment_t fs; - fs = snd_enter_user(); - ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); - snd_leave_user(fs); - } else { - ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); - } + ret = snd_pcm_kernel_readv(substream, bufs, frames); if (ret != -EPIPE && ret != -ESTRPIPE) break; } return ret; } +#endif /* CONFIG_SND_PCM_OSS_PLUGINS */ static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel) { @@ -1554,7 +1518,7 @@ static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size) ssize_t result = 0; snd_pcm_state_t state; long res; - wait_queue_t wait; + wait_queue_entry_t wait; runtime = substream->runtime; init_waitqueue_entry(&wait, current); @@ -1650,27 +1614,10 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file) size = runtime->control->appl_ptr % runtime->period_size; if (size > 0) { size = runtime->period_size - size; - if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { - size = (runtime->frame_bits * size) / 8; - while (size > 0) { - mm_segment_t fs; - size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; - size -= size1; - size1 *= 8; - size1 /= runtime->sample_bits; - snd_pcm_format_set_silence(runtime->format, - runtime->oss.buffer, - size1); - size1 /= runtime->channels; /* frames */ - fs = snd_enter_user(); - snd_pcm_lib_write(substream, (void __force __user *)runtime->oss.buffer, size1); - snd_leave_user(fs); - } - } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { - void __user *buffers[runtime->channels]; - memset(buffers, 0, runtime->channels * sizeof(void *)); - snd_pcm_lib_writev(substream, buffers, size); - } + if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) + snd_pcm_lib_write(substream, NULL, size); + else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) + snd_pcm_lib_writev(substream, NULL, size); } mutex_unlock(&runtime->oss.params_lock); /* @@ -1780,7 +1727,7 @@ static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file) int direct; struct snd_pcm_hw_params *params; unsigned int formats = 0; - struct snd_mask format_mask; + const struct snd_mask *format_mask; int fmt; if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) @@ -1802,12 +1749,12 @@ static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file) return -ENOMEM; _snd_pcm_hw_params_any(params); err = snd_pcm_hw_refine(substream, params); - format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + format_mask = hw_param_mask_c(params, SNDRV_PCM_HW_PARAM_FORMAT); kfree(params); if (err < 0) return err; for (fmt = 0; fmt < 32; ++fmt) { - if (snd_mask_test(&format_mask, fmt)) { + if (snd_mask_test(format_mask, fmt)) { int f = snd_pcm_oss_format_to(fmt); if (f >= 0) formats |= f; @@ -2387,7 +2334,7 @@ static int snd_pcm_oss_open(struct inode *inode, struct file *file) struct snd_pcm_oss_file *pcm_oss_file; struct snd_pcm_oss_setup setup[2]; int nonblock; - wait_queue_t wait; + wait_queue_entry_t wait; err = nonseekable_open(inode, file); if (err < 0) diff --git a/sound/core/oss/pcm_plugin.c b/sound/core/oss/pcm_plugin.c index 727ac44d39f4..cadc93792868 100644 --- a/sound/core/oss/pcm_plugin.c +++ b/sound/core/oss/pcm_plugin.c @@ -266,7 +266,8 @@ snd_pcm_sframes_t snd_pcm_plug_slave_size(struct snd_pcm_substream *plug, snd_pc return frames; } -static int snd_pcm_plug_formats(struct snd_mask *mask, snd_pcm_format_t format) +static int snd_pcm_plug_formats(const struct snd_mask *mask, + snd_pcm_format_t format) { struct snd_mask formats = *mask; u64 linfmts = (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 | @@ -309,7 +310,7 @@ static snd_pcm_format_t preferred_formats[] = { }; snd_pcm_format_t snd_pcm_plug_slave_format(snd_pcm_format_t format, - struct snd_mask *format_mask) + const struct snd_mask *format_mask) { int i; diff --git a/sound/core/oss/pcm_plugin.h b/sound/core/oss/pcm_plugin.h index a5035c2369a6..c9cd29d86efd 100644 --- a/sound/core/oss/pcm_plugin.h +++ b/sound/core/oss/pcm_plugin.h @@ -126,7 +126,7 @@ int snd_pcm_plug_format_plugins(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *slave_params); snd_pcm_format_t snd_pcm_plug_slave_format(snd_pcm_format_t format, - struct snd_mask *format_mask); + const struct snd_mask *format_mask); int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin); @@ -162,17 +162,15 @@ snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *ptr, snd_pcm_uframes_t size, int in_kernel); snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, - void **bufs, snd_pcm_uframes_t frames, - int in_kernel); + void **bufs, snd_pcm_uframes_t frames); snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, - void **bufs, snd_pcm_uframes_t frames, - int in_kernel); + void **bufs, snd_pcm_uframes_t frames); #else static inline snd_pcm_sframes_t snd_pcm_plug_client_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t drv_size) { return drv_size; } static inline snd_pcm_sframes_t snd_pcm_plug_slave_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t clt_size) { return clt_size; } -static inline int snd_pcm_plug_slave_format(int format, struct snd_mask *format_mask) { return format; } +static inline int snd_pcm_plug_slave_format(int format, const struct snd_mask *format_mask) { return format; } #endif diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 8e980aa678d0..89c7485519cb 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -31,13 +31,17 @@ #include <sound/control.h> #include <sound/info.h> +#include "pcm_local.h" + MODULE_AUTHOR("Jaroslav Kysela <[email protected]>, Abramo Bagnara <[email protected]>"); MODULE_DESCRIPTION("Midlevel PCM code for ALSA."); MODULE_LICENSE("GPL"); static LIST_HEAD(snd_pcm_devices); -static LIST_HEAD(snd_pcm_notify_list); static DEFINE_MUTEX(register_mutex); +#if IS_ENABLED(CONFIG_SND_PCM_OSS) +static LIST_HEAD(snd_pcm_notify_list); +#endif static int snd_pcm_free(struct snd_pcm *pcm); static int snd_pcm_dev_free(struct snd_device *device); @@ -884,16 +888,23 @@ static void snd_pcm_free_stream(struct snd_pcm_str * pstr) put_device(&pstr->dev); } +#if IS_ENABLED(CONFIG_SND_PCM_OSS) +#define pcm_call_notify(pcm, call) \ + do { \ + struct snd_pcm_notify *_notify; \ + list_for_each_entry(_notify, &snd_pcm_notify_list, list) \ + _notify->call(pcm); \ + } while (0) +#else +#define pcm_call_notify(pcm, call) do {} while (0) +#endif + static int snd_pcm_free(struct snd_pcm *pcm) { - struct snd_pcm_notify *notify; - if (!pcm) return 0; - if (!pcm->internal) { - list_for_each_entry(notify, &snd_pcm_notify_list, list) - notify->n_unregister(pcm); - } + if (!pcm->internal) + pcm_call_notify(pcm, n_unregister); if (pcm->private_free) pcm->private_free(pcm); snd_pcm_lib_preallocate_free_for_all(pcm); @@ -1056,7 +1067,7 @@ static struct attribute *pcm_dev_attrs[] = { NULL }; -static struct attribute_group pcm_dev_attr_group = { +static const struct attribute_group pcm_dev_attr_group = { .attrs = pcm_dev_attrs, }; @@ -1069,7 +1080,6 @@ static int snd_pcm_dev_register(struct snd_device *device) { int cidx, err; struct snd_pcm_substream *substream; - struct snd_pcm_notify *notify; struct snd_pcm *pcm; if (snd_BUG_ON(!device || !device->device_data)) @@ -1107,8 +1117,7 @@ static int snd_pcm_dev_register(struct snd_device *device) snd_pcm_timer_init(substream); } - list_for_each_entry(notify, &snd_pcm_notify_list, list) - notify->n_register(pcm); + pcm_call_notify(pcm, n_register); unlock: mutex_unlock(®ister_mutex); @@ -1118,7 +1127,6 @@ static int snd_pcm_dev_register(struct snd_device *device) static int snd_pcm_dev_disconnect(struct snd_device *device) { struct snd_pcm *pcm = device->device_data; - struct snd_pcm_notify *notify; struct snd_pcm_substream *substream; int cidx; @@ -1138,8 +1146,7 @@ static int snd_pcm_dev_disconnect(struct snd_device *device) } } if (!pcm->internal) { - list_for_each_entry(notify, &snd_pcm_notify_list, list) - notify->n_disconnect(pcm); + pcm_call_notify(pcm, n_disconnect); } for (cidx = 0; cidx < 2; cidx++) { if (!pcm->internal) @@ -1151,6 +1158,7 @@ static int snd_pcm_dev_disconnect(struct snd_device *device) return 0; } +#if IS_ENABLED(CONFIG_SND_PCM_OSS) /** * snd_pcm_notify - Add/remove the notify list * @notify: PCM notify list @@ -1183,6 +1191,7 @@ int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree) return 0; } EXPORT_SYMBOL(snd_pcm_notify); +#endif /* CONFIG_SND_PCM_OSS */ #ifdef CONFIG_SND_PROC_FS /* diff --git a/sound/core/pcm_compat.c b/sound/core/pcm_compat.c index 1f64ab0c2a95..10f537f4d735 100644 --- a/sound/core/pcm_compat.c +++ b/sound/core/pcm_compat.c @@ -27,17 +27,13 @@ static int snd_pcm_ioctl_delay_compat(struct snd_pcm_substream *substream, s32 __user *src) { snd_pcm_sframes_t delay; - mm_segment_t fs; - int err; - fs = snd_enter_user(); - err = snd_pcm_delay(substream, &delay); - snd_leave_user(fs); - if (err < 0) - return err; + delay = snd_pcm_delay(substream); + if (delay < 0) + return delay; if (put_user(delay, src)) return -EFAULT; - return err; + return 0; } static int snd_pcm_ioctl_rewind_compat(struct snd_pcm_substream *substream, @@ -680,6 +676,7 @@ static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned l case SNDRV_PCM_IOCTL_INFO: case SNDRV_PCM_IOCTL_TSTAMP: case SNDRV_PCM_IOCTL_TTSTAMP: + case SNDRV_PCM_IOCTL_USER_PVERSION: case SNDRV_PCM_IOCTL_HWSYNC: case SNDRV_PCM_IOCTL_PREPARE: case SNDRV_PCM_IOCTL_RESET: diff --git a/sound/core/pcm_drm_eld.c b/sound/core/pcm_drm_eld.c index e70379fb63d0..9881d087756f 100644 --- a/sound/core/pcm_drm_eld.c +++ b/sound/core/pcm_drm_eld.c @@ -29,13 +29,13 @@ static int eld_limit_rates(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) { struct snd_interval *r = hw_param_interval(params, rule->var); - struct snd_interval *c; + const struct snd_interval *c; unsigned int rate_mask = 7, i; const u8 *sad, *eld = rule->private; sad = drm_eld_sad(eld); if (sad) { - c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); + c = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS); for (i = drm_eld_sad_count(eld); i > 0; i--, sad += 3) { unsigned max_channels = sad_max_channels(sad); @@ -57,7 +57,7 @@ static int eld_limit_channels(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) { struct snd_interval *c = hw_param_interval(params, rule->var); - struct snd_interval *r; + const struct snd_interval *r; struct snd_interval t = { .min = 1, .max = 2, .integer = 1, }; unsigned int i; const u8 *sad, *eld = rule->private; @@ -67,7 +67,7 @@ static int eld_limit_channels(struct snd_pcm_hw_params *params, unsigned int rate_mask = 0; /* Convert the rate interval to a mask */ - r = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); + r = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE); for (i = 0; i < ARRAY_SIZE(eld_rates); i++) if (r->min <= eld_rates[i] && r->max >= eld_rates[i]) rate_mask |= BIT(i); diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index 5088d4b8db22..a93a4235a332 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -33,6 +33,8 @@ #include <sound/pcm_params.h> #include <sound/timer.h> +#include "pcm_local.h" + #ifdef CONFIG_SND_PCM_XRUN_DEBUG #define CREATE_TRACE_POINTS #include "pcm_trace.h" @@ -40,8 +42,12 @@ #define trace_hwptr(substream, pos, in_interrupt) #define trace_xrun(substream) #define trace_hw_ptr_error(substream, reason) +#define trace_applptr(substream, prev, curr) #endif +static int fill_silence_frames(struct snd_pcm_substream *substream, + snd_pcm_uframes_t off, snd_pcm_uframes_t frames); + /* * fill ring buffer with silence * runtime->silence_start: starting pointer to silence area @@ -55,18 +61,20 @@ void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_ufram { struct snd_pcm_runtime *runtime = substream->runtime; snd_pcm_uframes_t frames, ofs, transfer; + int err; if (runtime->silence_size < runtime->boundary) { snd_pcm_sframes_t noise_dist, n; - if (runtime->silence_start != runtime->control->appl_ptr) { - n = runtime->control->appl_ptr - runtime->silence_start; + snd_pcm_uframes_t appl_ptr = READ_ONCE(runtime->control->appl_ptr); + if (runtime->silence_start != appl_ptr) { + n = appl_ptr - runtime->silence_start; if (n < 0) n += runtime->boundary; if ((snd_pcm_uframes_t)n < runtime->silence_filled) runtime->silence_filled -= n; else runtime->silence_filled = 0; - runtime->silence_start = runtime->control->appl_ptr; + runtime->silence_start = appl_ptr; } if (runtime->silence_filled >= runtime->buffer_size) return; @@ -107,33 +115,8 @@ void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_ufram ofs = runtime->silence_start % runtime->buffer_size; while (frames > 0) { transfer = ofs + frames > runtime->buffer_size ? runtime->buffer_size - ofs : frames; - if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || - runtime->access == SNDRV_PCM_ACCESS_MMAP_INTERLEAVED) { - if (substream->ops->silence) { - int err; - err = substream->ops->silence(substream, -1, ofs, transfer); - snd_BUG_ON(err < 0); - } else { - char *hwbuf = runtime->dma_area + frames_to_bytes(runtime, ofs); - snd_pcm_format_set_silence(runtime->format, hwbuf, transfer * runtime->channels); - } - } else { - unsigned int c; - unsigned int channels = runtime->channels; - if (substream->ops->silence) { - for (c = 0; c < channels; ++c) { - int err; - err = substream->ops->silence(substream, c, ofs, transfer); - snd_BUG_ON(err < 0); - } - } else { - size_t dma_csize = runtime->dma_bytes / channels; - for (c = 0; c < channels; ++c) { - char *hwbuf = runtime->dma_area + (c * dma_csize) + samples_to_bytes(runtime, ofs); - snd_pcm_format_set_silence(runtime->format, hwbuf, transfer); - } - } - } + err = fill_silence_frames(substream, ofs, transfer); + snd_BUG_ON(err < 0); runtime->silence_filled += transfer; frames -= transfer; ofs = 0; @@ -508,7 +491,6 @@ void snd_pcm_set_ops(struct snd_pcm *pcm, int direction, for (substream = stream->substream; substream != NULL; substream = substream->next) substream->ops = ops; } - EXPORT_SYMBOL(snd_pcm_set_ops); /** @@ -526,7 +508,6 @@ void snd_pcm_set_sync(struct snd_pcm_substream *substream) runtime->sync.id32[2] = -1; runtime->sync.id32[3] = -1; } - EXPORT_SYMBOL(snd_pcm_set_sync); /* @@ -643,7 +624,6 @@ int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v) } return changed; } - EXPORT_SYMBOL(snd_interval_refine); static int snd_interval_refine_first(struct snd_interval *i) @@ -906,7 +886,6 @@ int snd_interval_ratnum(struct snd_interval *i, } return err; } - EXPORT_SYMBOL(snd_interval_ratnum); /** @@ -1044,7 +1023,6 @@ int snd_interval_list(struct snd_interval *i, unsigned int count, } return snd_interval_refine(i, &list_range); } - EXPORT_SYMBOL(snd_interval_list); /** @@ -1183,7 +1161,6 @@ int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, unsigned int cond, va_end(args); return 0; } - EXPORT_SYMBOL(snd_pcm_hw_rule_add); /** @@ -1247,7 +1224,6 @@ int snd_pcm_hw_constraint_integer(struct snd_pcm_runtime *runtime, snd_pcm_hw_pa struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; return snd_interval_setinteger(constrs_interval(constrs, var)); } - EXPORT_SYMBOL(snd_pcm_hw_constraint_integer); /** @@ -1273,7 +1249,6 @@ int snd_pcm_hw_constraint_minmax(struct snd_pcm_runtime *runtime, snd_pcm_hw_par t.integer = 0; return snd_interval_refine(constrs_interval(constrs, var), &t); } - EXPORT_SYMBOL(snd_pcm_hw_constraint_minmax); static int snd_pcm_hw_rule_list(struct snd_pcm_hw_params *params, @@ -1304,7 +1279,6 @@ int snd_pcm_hw_constraint_list(struct snd_pcm_runtime *runtime, snd_pcm_hw_rule_list, (void *)l, var, -1); } - EXPORT_SYMBOL(snd_pcm_hw_constraint_list); static int snd_pcm_hw_rule_ranges(struct snd_pcm_hw_params *params, @@ -1371,7 +1345,6 @@ int snd_pcm_hw_constraint_ratnums(struct snd_pcm_runtime *runtime, snd_pcm_hw_rule_ratnums, (void *)r, var, -1); } - EXPORT_SYMBOL(snd_pcm_hw_constraint_ratnums); static int snd_pcm_hw_rule_ratdens(struct snd_pcm_hw_params *params, @@ -1406,7 +1379,6 @@ int snd_pcm_hw_constraint_ratdens(struct snd_pcm_runtime *runtime, snd_pcm_hw_rule_ratdens, (void *)r, var, -1); } - EXPORT_SYMBOL(snd_pcm_hw_constraint_ratdens); static int snd_pcm_hw_rule_msbits(struct snd_pcm_hw_params *params, @@ -1415,7 +1387,8 @@ static int snd_pcm_hw_rule_msbits(struct snd_pcm_hw_params *params, unsigned int l = (unsigned long) rule->private; int width = l & 0xffff; unsigned int msbits = l >> 16; - struct snd_interval *i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); + const struct snd_interval *i = + hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); if (!snd_interval_single(i)) return 0; @@ -1452,7 +1425,6 @@ int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime *runtime, (void*) l, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); } - EXPORT_SYMBOL(snd_pcm_hw_constraint_msbits); static int snd_pcm_hw_rule_step(struct snd_pcm_hw_params *params, @@ -1480,7 +1452,6 @@ int snd_pcm_hw_constraint_step(struct snd_pcm_runtime *runtime, snd_pcm_hw_rule_step, (void *) step, var, -1); } - EXPORT_SYMBOL(snd_pcm_hw_constraint_step); static int snd_pcm_hw_rule_pow2(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) @@ -1511,7 +1482,6 @@ int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime, snd_pcm_hw_rule_pow2, NULL, var, -1); } - EXPORT_SYMBOL(snd_pcm_hw_constraint_pow2); static int snd_pcm_hw_rule_noresample_func(struct snd_pcm_hw_params *params, @@ -1570,7 +1540,6 @@ void _snd_pcm_hw_params_any(struct snd_pcm_hw_params *params) _snd_pcm_hw_param_any(params, k); params->info = ~0U; } - EXPORT_SYMBOL(_snd_pcm_hw_params_any); /** @@ -1603,7 +1572,6 @@ int snd_pcm_hw_param_value(const struct snd_pcm_hw_params *params, } return -EINVAL; } - EXPORT_SYMBOL(snd_pcm_hw_param_value); void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params, @@ -1621,7 +1589,6 @@ void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params, snd_BUG(); } } - EXPORT_SYMBOL(_snd_pcm_hw_param_setempty); static int _snd_pcm_hw_param_first(struct snd_pcm_hw_params *params, @@ -1668,7 +1635,6 @@ int snd_pcm_hw_param_first(struct snd_pcm_substream *pcm, } return snd_pcm_hw_param_value(params, var, dir); } - EXPORT_SYMBOL(snd_pcm_hw_param_first); static int _snd_pcm_hw_param_last(struct snd_pcm_hw_params *params, @@ -1715,48 +1681,8 @@ int snd_pcm_hw_param_last(struct snd_pcm_substream *pcm, } return snd_pcm_hw_param_value(params, var, dir); } - EXPORT_SYMBOL(snd_pcm_hw_param_last); -/** - * snd_pcm_hw_param_choose - choose a configuration defined by @params - * @pcm: PCM instance - * @params: the hw_params instance - * - * Choose one configuration from configuration space defined by @params. - * The configuration chosen is that obtained fixing in this order: - * first access, first format, first subformat, min channels, - * min rate, min period time, max buffer size, min tick time - * - * Return: Zero if successful, or a negative error code on failure. - */ -int snd_pcm_hw_params_choose(struct snd_pcm_substream *pcm, - struct snd_pcm_hw_params *params) -{ - static int vars[] = { - SNDRV_PCM_HW_PARAM_ACCESS, - SNDRV_PCM_HW_PARAM_FORMAT, - SNDRV_PCM_HW_PARAM_SUBFORMAT, - SNDRV_PCM_HW_PARAM_CHANNELS, - SNDRV_PCM_HW_PARAM_RATE, - SNDRV_PCM_HW_PARAM_PERIOD_TIME, - SNDRV_PCM_HW_PARAM_BUFFER_SIZE, - SNDRV_PCM_HW_PARAM_TICK_TIME, - -1 - }; - int err, *v; - - for (v = vars; *v != -1; v++) { - if (*v != SNDRV_PCM_HW_PARAM_BUFFER_SIZE) - err = snd_pcm_hw_param_first(pcm, params, *v, NULL); - else - err = snd_pcm_hw_param_last(pcm, params, *v, NULL); - if (snd_BUG_ON(err < 0)) - return err; - } - return 0; -} - static int snd_pcm_lib_ioctl_reset(struct snd_pcm_substream *substream, void *arg) { @@ -1843,8 +1769,6 @@ int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg) { switch (cmd) { - case SNDRV_PCM_IOCTL1_INFO: - return 0; case SNDRV_PCM_IOCTL1_RESET: return snd_pcm_lib_ioctl_reset(substream, arg); case SNDRV_PCM_IOCTL1_CHANNEL_INFO: @@ -1854,7 +1778,6 @@ int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream, } return -ENXIO; } - EXPORT_SYMBOL(snd_pcm_lib_ioctl); /** @@ -1890,7 +1813,6 @@ void snd_pcm_period_elapsed(struct snd_pcm_substream *substream) kill_fasync(&runtime->fasync, SIGIO, POLL_IN); snd_pcm_stream_unlock_irqrestore(substream, flags); } - EXPORT_SYMBOL(snd_pcm_period_elapsed); /* @@ -1904,7 +1826,7 @@ static int wait_for_avail(struct snd_pcm_substream *substream, { struct snd_pcm_runtime *runtime = substream->runtime; int is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; - wait_queue_t wait; + wait_queue_entry_t wait; int err = 0; snd_pcm_uframes_t avail = 0; long wait_time, tout; @@ -1985,129 +1907,147 @@ static int wait_for_avail(struct snd_pcm_substream *substream, return err; } -static int snd_pcm_lib_write_transfer(struct snd_pcm_substream *substream, - unsigned int hwoff, - unsigned long data, unsigned int off, - snd_pcm_uframes_t frames) +typedef int (*pcm_transfer_f)(struct snd_pcm_substream *substream, + int channel, unsigned long hwoff, + void *buf, unsigned long bytes); + +typedef int (*pcm_copy_f)(struct snd_pcm_substream *, snd_pcm_uframes_t, void *, + snd_pcm_uframes_t, snd_pcm_uframes_t, pcm_transfer_f); + +/* calculate the target DMA-buffer position to be written/read */ +static void *get_dma_ptr(struct snd_pcm_runtime *runtime, + int channel, unsigned long hwoff) { - struct snd_pcm_runtime *runtime = substream->runtime; - int err; - char __user *buf = (char __user *) data + frames_to_bytes(runtime, off); - if (substream->ops->copy) { - if ((err = substream->ops->copy(substream, -1, hwoff, buf, frames)) < 0) - return err; - } else { - char *hwbuf = runtime->dma_area + frames_to_bytes(runtime, hwoff); - if (copy_from_user(hwbuf, buf, frames_to_bytes(runtime, frames))) - return -EFAULT; - } + return runtime->dma_area + hwoff + + channel * (runtime->dma_bytes / runtime->channels); +} + +/* default copy_user ops for write; used for both interleaved and non- modes */ +static int default_write_copy(struct snd_pcm_substream *substream, + int channel, unsigned long hwoff, + void *buf, unsigned long bytes) +{ + if (copy_from_user(get_dma_ptr(substream->runtime, channel, hwoff), + (void __user *)buf, bytes)) + return -EFAULT; return 0; } - -typedef int (*transfer_f)(struct snd_pcm_substream *substream, unsigned int hwoff, - unsigned long data, unsigned int off, - snd_pcm_uframes_t size); -static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream, - unsigned long data, - snd_pcm_uframes_t size, - int nonblock, - transfer_f transfer) +/* default copy_kernel ops for write */ +static int default_write_copy_kernel(struct snd_pcm_substream *substream, + int channel, unsigned long hwoff, + void *buf, unsigned long bytes) +{ + memcpy(get_dma_ptr(substream->runtime, channel, hwoff), buf, bytes); + return 0; +} + +/* fill silence instead of copy data; called as a transfer helper + * from __snd_pcm_lib_write() or directly from noninterleaved_copy() when + * a NULL buffer is passed + */ +static int fill_silence(struct snd_pcm_substream *substream, int channel, + unsigned long hwoff, void *buf, unsigned long bytes) { struct snd_pcm_runtime *runtime = substream->runtime; - snd_pcm_uframes_t xfer = 0; - snd_pcm_uframes_t offset = 0; - snd_pcm_uframes_t avail; - int err = 0; - if (size == 0) + if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK) return 0; + if (substream->ops->fill_silence) + return substream->ops->fill_silence(substream, channel, + hwoff, bytes); - snd_pcm_stream_lock_irq(substream); - switch (runtime->status->state) { - case SNDRV_PCM_STATE_PREPARED: - case SNDRV_PCM_STATE_RUNNING: - case SNDRV_PCM_STATE_PAUSED: - break; - case SNDRV_PCM_STATE_XRUN: - err = -EPIPE; - goto _end_unlock; - case SNDRV_PCM_STATE_SUSPENDED: - err = -ESTRPIPE; - goto _end_unlock; - default: - err = -EBADFD; - goto _end_unlock; - } + snd_pcm_format_set_silence(runtime->format, + get_dma_ptr(runtime, channel, hwoff), + bytes_to_samples(runtime, bytes)); + return 0; +} - runtime->twake = runtime->control->avail_min ? : 1; - if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) - snd_pcm_update_hw_ptr(substream); - avail = snd_pcm_playback_avail(runtime); - while (size > 0) { - snd_pcm_uframes_t frames, appl_ptr, appl_ofs; - snd_pcm_uframes_t cont; - if (!avail) { - if (nonblock) { - err = -EAGAIN; - goto _end_unlock; - } - runtime->twake = min_t(snd_pcm_uframes_t, size, - runtime->control->avail_min ? : 1); - err = wait_for_avail(substream, &avail); - if (err < 0) - goto _end_unlock; - } - frames = size > avail ? avail : size; - cont = runtime->buffer_size - runtime->control->appl_ptr % runtime->buffer_size; - if (frames > cont) - frames = cont; - if (snd_BUG_ON(!frames)) { - runtime->twake = 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); - 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; - goto _end_unlock; - case SNDRV_PCM_STATE_SUSPENDED: - err = -ESTRPIPE; - goto _end_unlock; - default: - break; - } - appl_ptr += frames; - if (appl_ptr >= runtime->boundary) - appl_ptr -= runtime->boundary; - runtime->control->appl_ptr = appl_ptr; - if (substream->ops->ack) - substream->ops->ack(substream); +/* default copy_user ops for read; used for both interleaved and non- modes */ +static int default_read_copy(struct snd_pcm_substream *substream, + int channel, unsigned long hwoff, + void *buf, unsigned long bytes) +{ + if (copy_to_user((void __user *)buf, + get_dma_ptr(substream->runtime, channel, hwoff), + bytes)) + return -EFAULT; + return 0; +} - offset += frames; - size -= frames; - xfer += frames; - avail -= frames; - if (runtime->status->state == SNDRV_PCM_STATE_PREPARED && - snd_pcm_playback_hw_avail(runtime) >= (snd_pcm_sframes_t)runtime->start_threshold) { - err = snd_pcm_start(substream); - if (err < 0) - goto _end_unlock; - } +/* default copy_kernel ops for read */ +static int default_read_copy_kernel(struct snd_pcm_substream *substream, + int channel, unsigned long hwoff, + void *buf, unsigned long bytes) +{ + memcpy(buf, get_dma_ptr(substream->runtime, channel, hwoff), bytes); + return 0; +} + +/* call transfer function with the converted pointers and sizes; + * for interleaved mode, it's one shot for all samples + */ +static int interleaved_copy(struct snd_pcm_substream *substream, + snd_pcm_uframes_t hwoff, void *data, + snd_pcm_uframes_t off, + snd_pcm_uframes_t frames, + pcm_transfer_f transfer) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + + /* convert to bytes */ + hwoff = frames_to_bytes(runtime, hwoff); + off = frames_to_bytes(runtime, off); + frames = frames_to_bytes(runtime, frames); + return transfer(substream, 0, hwoff, data + off, frames); +} + +/* call transfer function with the converted pointers and sizes for each + * non-interleaved channel; when buffer is NULL, silencing instead of copying + */ +static int noninterleaved_copy(struct snd_pcm_substream *substream, + snd_pcm_uframes_t hwoff, void *data, + snd_pcm_uframes_t off, + snd_pcm_uframes_t frames, + pcm_transfer_f transfer) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + int channels = runtime->channels; + void **bufs = data; + int c, err; + + /* convert to bytes; note that it's not frames_to_bytes() here. + * in non-interleaved mode, we copy for each channel, thus + * each copy is n_samples bytes x channels = whole frames. + */ + off = samples_to_bytes(runtime, off); + frames = samples_to_bytes(runtime, frames); + hwoff = samples_to_bytes(runtime, hwoff); + for (c = 0; c < channels; ++c, ++bufs) { + if (!data || !*bufs) + err = fill_silence(substream, c, hwoff, NULL, frames); + else + err = transfer(substream, c, hwoff, *bufs + off, + frames); + if (err < 0) + return err; } - _end_unlock: - runtime->twake = 0; - if (xfer > 0 && err >= 0) - snd_pcm_update_state(substream, runtime); - snd_pcm_stream_unlock_irq(substream); - return xfer > 0 ? (snd_pcm_sframes_t)xfer : err; + return 0; +} + +/* fill silence on the given buffer position; + * called from snd_pcm_playback_silence() + */ +static int fill_silence_frames(struct snd_pcm_substream *substream, + snd_pcm_uframes_t off, snd_pcm_uframes_t frames) +{ + if (substream->runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || + substream->runtime->access == SNDRV_PCM_ACCESS_MMAP_INTERLEAVED) + return interleaved_copy(substream, off, NULL, 0, frames, + fill_silence); + else + return noninterleaved_copy(substream, off, NULL, 0, frames, + fill_silence); } /* sanity-check for read/write methods */ @@ -2117,164 +2057,137 @@ static int pcm_sanity_check(struct snd_pcm_substream *substream) if (PCM_RUNTIME_CHECK(substream)) return -ENXIO; runtime = substream->runtime; - if (snd_BUG_ON(!substream->ops->copy && !runtime->dma_area)) + if (snd_BUG_ON(!substream->ops->copy_user && !runtime->dma_area)) return -EINVAL; if (runtime->status->state == SNDRV_PCM_STATE_OPEN) return -EBADFD; return 0; } -snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream, const void __user *buf, snd_pcm_uframes_t size) +static int pcm_accessible_state(struct snd_pcm_runtime *runtime) { - struct snd_pcm_runtime *runtime; - int nonblock; - int err; - - err = pcm_sanity_check(substream); - if (err < 0) - return err; - runtime = substream->runtime; - nonblock = !!(substream->f_flags & O_NONBLOCK); - - if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED && - runtime->channels > 1) - return -EINVAL; - return snd_pcm_lib_write1(substream, (unsigned long)buf, size, nonblock, - snd_pcm_lib_write_transfer); + switch (runtime->status->state) { + case SNDRV_PCM_STATE_PREPARED: + case SNDRV_PCM_STATE_RUNNING: + case SNDRV_PCM_STATE_PAUSED: + return 0; + case SNDRV_PCM_STATE_XRUN: + return -EPIPE; + case SNDRV_PCM_STATE_SUSPENDED: + return -ESTRPIPE; + default: + return -EBADFD; + } } -EXPORT_SYMBOL(snd_pcm_lib_write); - -static int snd_pcm_lib_writev_transfer(struct snd_pcm_substream *substream, - unsigned int hwoff, - unsigned long data, unsigned int off, - snd_pcm_uframes_t frames) +/* update to the given appl_ptr and call ack callback if needed; + * when an error is returned, take back to the original value + */ +int pcm_lib_apply_appl_ptr(struct snd_pcm_substream *substream, + snd_pcm_uframes_t appl_ptr) { struct snd_pcm_runtime *runtime = substream->runtime; - int err; - void __user **bufs = (void __user **)data; - int channels = runtime->channels; - int c; - if (substream->ops->copy) { - if (snd_BUG_ON(!substream->ops->silence)) - return -EINVAL; - for (c = 0; c < channels; ++c, ++bufs) { - if (*bufs == NULL) { - if ((err = substream->ops->silence(substream, c, hwoff, frames)) < 0) - return err; - } else { - char __user *buf = *bufs + samples_to_bytes(runtime, off); - if ((err = substream->ops->copy(substream, c, hwoff, buf, frames)) < 0) - return err; - } - } - } else { - /* default transfer behaviour */ - size_t dma_csize = runtime->dma_bytes / channels; - for (c = 0; c < channels; ++c, ++bufs) { - char *hwbuf = runtime->dma_area + (c * dma_csize) + samples_to_bytes(runtime, hwoff); - if (*bufs == NULL) { - snd_pcm_format_set_silence(runtime->format, hwbuf, frames); - } else { - char __user *buf = *bufs + samples_to_bytes(runtime, off); - if (copy_from_user(hwbuf, buf, samples_to_bytes(runtime, frames))) - return -EFAULT; - } + snd_pcm_uframes_t old_appl_ptr = runtime->control->appl_ptr; + int ret; + + if (old_appl_ptr == appl_ptr) + return 0; + + runtime->control->appl_ptr = appl_ptr; + if (substream->ops->ack) { + ret = substream->ops->ack(substream); + if (ret < 0) { + runtime->control->appl_ptr = old_appl_ptr; + return ret; } } + + trace_applptr(substream, old_appl_ptr, appl_ptr); + return 0; } - -snd_pcm_sframes_t snd_pcm_lib_writev(struct snd_pcm_substream *substream, - void __user **bufs, - snd_pcm_uframes_t frames) + +/* the common loop for read/write data */ +snd_pcm_sframes_t __snd_pcm_lib_xfer(struct snd_pcm_substream *substream, + void *data, bool interleaved, + snd_pcm_uframes_t size, bool in_kernel) { - struct snd_pcm_runtime *runtime; - int nonblock; + struct snd_pcm_runtime *runtime = substream->runtime; + snd_pcm_uframes_t xfer = 0; + snd_pcm_uframes_t offset = 0; + snd_pcm_uframes_t avail; + pcm_copy_f writer; + pcm_transfer_f transfer; + bool nonblock; + bool is_playback; int err; err = pcm_sanity_check(substream); if (err < 0) return err; - runtime = substream->runtime; - nonblock = !!(substream->f_flags & O_NONBLOCK); - - if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) - return -EINVAL; - return snd_pcm_lib_write1(substream, (unsigned long)bufs, frames, - nonblock, snd_pcm_lib_writev_transfer); -} - -EXPORT_SYMBOL(snd_pcm_lib_writev); -static int snd_pcm_lib_read_transfer(struct snd_pcm_substream *substream, - unsigned int hwoff, - unsigned long data, unsigned int off, - snd_pcm_uframes_t frames) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - int err; - char __user *buf = (char __user *) data + frames_to_bytes(runtime, off); - if (substream->ops->copy) { - if ((err = substream->ops->copy(substream, -1, hwoff, buf, frames)) < 0) - return err; + is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; + if (interleaved) { + if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED && + runtime->channels > 1) + return -EINVAL; + writer = interleaved_copy; } else { - char *hwbuf = runtime->dma_area + frames_to_bytes(runtime, hwoff); - if (copy_to_user(buf, hwbuf, frames_to_bytes(runtime, frames))) - return -EFAULT; + if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) + return -EINVAL; + writer = noninterleaved_copy; } - return 0; -} -static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream, - unsigned long data, - snd_pcm_uframes_t size, - int nonblock, - transfer_f transfer) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - snd_pcm_uframes_t xfer = 0; - snd_pcm_uframes_t offset = 0; - snd_pcm_uframes_t avail; - int err = 0; + if (!data) { + if (is_playback) + transfer = fill_silence; + else + return -EINVAL; + } else if (in_kernel) { + if (substream->ops->copy_kernel) + transfer = substream->ops->copy_kernel; + else + transfer = is_playback ? + default_write_copy_kernel : default_read_copy_kernel; + } else { + if (substream->ops->copy_user) + transfer = (pcm_transfer_f)substream->ops->copy_user; + else + transfer = is_playback ? + default_write_copy : default_read_copy; + } if (size == 0) return 0; + nonblock = !!(substream->f_flags & O_NONBLOCK); + snd_pcm_stream_lock_irq(substream); - switch (runtime->status->state) { - case SNDRV_PCM_STATE_PREPARED: - if (size >= runtime->start_threshold) { - err = snd_pcm_start(substream); - if (err < 0) - goto _end_unlock; - } - break; - case SNDRV_PCM_STATE_DRAINING: - case SNDRV_PCM_STATE_RUNNING: - case SNDRV_PCM_STATE_PAUSED: - break; - case SNDRV_PCM_STATE_XRUN: - err = -EPIPE; - goto _end_unlock; - case SNDRV_PCM_STATE_SUSPENDED: - err = -ESTRPIPE; - goto _end_unlock; - default: - err = -EBADFD; + err = pcm_accessible_state(runtime); + if (err < 0) goto _end_unlock; + + if (!is_playback && + runtime->status->state == SNDRV_PCM_STATE_PREPARED && + size >= runtime->start_threshold) { + err = snd_pcm_start(substream); + if (err < 0) + goto _end_unlock; } runtime->twake = runtime->control->avail_min ? : 1; if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) snd_pcm_update_hw_ptr(substream); - avail = snd_pcm_capture_avail(runtime); + if (is_playback) + avail = snd_pcm_playback_avail(runtime); + else + avail = snd_pcm_capture_avail(runtime); while (size > 0) { snd_pcm_uframes_t frames, appl_ptr, appl_ofs; snd_pcm_uframes_t cont; if (!avail) { - if (runtime->status->state == - SNDRV_PCM_STATE_DRAINING) { + if (!is_playback && + runtime->status->state == SNDRV_PCM_STATE_DRAINING) { snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); goto _end_unlock; } @@ -2291,7 +2204,9 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream, continue; /* draining */ } frames = size > avail ? avail : size; - cont = runtime->buffer_size - runtime->control->appl_ptr % runtime->buffer_size; + appl_ptr = READ_ONCE(runtime->control->appl_ptr); + appl_ofs = appl_ptr % runtime->buffer_size; + cont = runtime->buffer_size - appl_ofs; if (frames > cont) frames = cont; if (snd_BUG_ON(!frames)) { @@ -2299,34 +2214,33 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream, 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); - err = transfer(substream, appl_ofs, data, offset, frames); + err = writer(substream, appl_ofs, data, offset, frames, + transfer); snd_pcm_stream_lock_irq(substream); if (err < 0) goto _end_unlock; - switch (runtime->status->state) { - case SNDRV_PCM_STATE_XRUN: - err = -EPIPE; - goto _end_unlock; - case SNDRV_PCM_STATE_SUSPENDED: - err = -ESTRPIPE; + err = pcm_accessible_state(runtime); + if (err < 0) goto _end_unlock; - default: - break; - } appl_ptr += frames; if (appl_ptr >= runtime->boundary) appl_ptr -= runtime->boundary; - runtime->control->appl_ptr = appl_ptr; - if (substream->ops->ack) - substream->ops->ack(substream); + err = pcm_lib_apply_appl_ptr(substream, appl_ptr); + if (err < 0) + goto _end_unlock; offset += frames; size -= frames; xfer += frames; avail -= frames; + if (is_playback && + runtime->status->state == SNDRV_PCM_STATE_PREPARED && + snd_pcm_playback_hw_avail(runtime) >= (snd_pcm_sframes_t)runtime->start_threshold) { + err = snd_pcm_start(substream); + if (err < 0) + goto _end_unlock; + } } _end_unlock: runtime->twake = 0; @@ -2335,83 +2249,7 @@ static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream, snd_pcm_stream_unlock_irq(substream); return xfer > 0 ? (snd_pcm_sframes_t)xfer : err; } - -snd_pcm_sframes_t snd_pcm_lib_read(struct snd_pcm_substream *substream, void __user *buf, snd_pcm_uframes_t size) -{ - struct snd_pcm_runtime *runtime; - int nonblock; - int err; - - err = pcm_sanity_check(substream); - if (err < 0) - return err; - runtime = substream->runtime; - nonblock = !!(substream->f_flags & O_NONBLOCK); - if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED) - return -EINVAL; - return snd_pcm_lib_read1(substream, (unsigned long)buf, size, nonblock, snd_pcm_lib_read_transfer); -} - -EXPORT_SYMBOL(snd_pcm_lib_read); - -static int snd_pcm_lib_readv_transfer(struct snd_pcm_substream *substream, - unsigned int hwoff, - unsigned long data, unsigned int off, - snd_pcm_uframes_t frames) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - int err; - void __user **bufs = (void __user **)data; - int channels = runtime->channels; - int c; - if (substream->ops->copy) { - for (c = 0; c < channels; ++c, ++bufs) { - char __user *buf; - if (*bufs == NULL) - continue; - buf = *bufs + samples_to_bytes(runtime, off); - if ((err = substream->ops->copy(substream, c, hwoff, buf, frames)) < 0) - return err; - } - } else { - snd_pcm_uframes_t dma_csize = runtime->dma_bytes / channels; - for (c = 0; c < channels; ++c, ++bufs) { - char *hwbuf; - char __user *buf; - if (*bufs == NULL) - continue; - - hwbuf = runtime->dma_area + (c * dma_csize) + samples_to_bytes(runtime, hwoff); - buf = *bufs + samples_to_bytes(runtime, off); - if (copy_to_user(buf, hwbuf, samples_to_bytes(runtime, frames))) - return -EFAULT; - } - } - return 0; -} - -snd_pcm_sframes_t snd_pcm_lib_readv(struct snd_pcm_substream *substream, - void __user **bufs, - snd_pcm_uframes_t frames) -{ - struct snd_pcm_runtime *runtime; - int nonblock; - int err; - - err = pcm_sanity_check(substream); - if (err < 0) - return err; - runtime = substream->runtime; - if (runtime->status->state == SNDRV_PCM_STATE_OPEN) - return -EBADFD; - - nonblock = !!(substream->f_flags & O_NONBLOCK); - if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) - return -EINVAL; - return snd_pcm_lib_read1(substream, (unsigned long)bufs, frames, nonblock, snd_pcm_lib_readv_transfer); -} - -EXPORT_SYMBOL(snd_pcm_lib_readv); +EXPORT_SYMBOL(__snd_pcm_lib_xfer); /* * standard channel mapping helpers @@ -2492,7 +2330,7 @@ static int pcm_chmap_ctl_get(struct snd_kcontrol *kcontrol, struct snd_pcm_substream *substream; const struct snd_pcm_chmap_elem *map; - if (snd_BUG_ON(!info->chmap)) + if (!info->chmap) return -EINVAL; substream = snd_pcm_chmap_substream(info, idx); if (!substream) @@ -2524,7 +2362,7 @@ static int pcm_chmap_ctl_tlv(struct snd_kcontrol *kcontrol, int op_flag, unsigned int __user *dst; int c, count = 0; - if (snd_BUG_ON(!info->chmap)) + if (!info->chmap) return -EINVAL; if (size < 8) return -ENOMEM; diff --git a/sound/core/pcm_local.h b/sound/core/pcm_local.h new file mode 100644 index 000000000000..16f254732b2a --- /dev/null +++ b/sound/core/pcm_local.h @@ -0,0 +1,50 @@ +/* + * pcm_local.h - a local header file for snd-pcm module. + * + * Copyright (c) Takashi Sakamoto <[email protected]> + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#ifndef __SOUND_CORE_PCM_LOCAL_H +#define __SOUND_CORE_PCM_LOCAL_H + +extern const struct snd_pcm_hw_constraint_list snd_pcm_known_rates; + +void snd_interval_mul(const struct snd_interval *a, + const struct snd_interval *b, struct snd_interval *c); +void snd_interval_div(const struct snd_interval *a, + const struct snd_interval *b, struct snd_interval *c); +void snd_interval_muldivk(const struct snd_interval *a, + const struct snd_interval *b, + unsigned int k, struct snd_interval *c); +void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k, + const struct snd_interval *b, struct snd_interval *c); + +int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream); +int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream); + +int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime, + snd_pcm_hw_param_t var, u_int32_t mask); + +int pcm_lib_apply_appl_ptr(struct snd_pcm_substream *substream, + snd_pcm_uframes_t appl_ptr); +int snd_pcm_update_state(struct snd_pcm_substream *substream, + struct snd_pcm_runtime *runtime); +int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream); + +void snd_pcm_playback_silence(struct snd_pcm_substream *substream, + snd_pcm_uframes_t new_hw_ptr); + +#ifdef CONFIG_SND_PCM_TIMER +void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream); +void snd_pcm_timer_init(struct snd_pcm_substream *substream); +void snd_pcm_timer_done(struct snd_pcm_substream *substream); +#else +static inline void +snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream) {} +static inline void snd_pcm_timer_init(struct snd_pcm_substream *substream) {} +static inline void snd_pcm_timer_done(struct snd_pcm_substream *substream) {} +#endif + +#endif /* __SOUND_CORE_PCM_LOCAL_H */ diff --git a/sound/core/pcm_memory.c b/sound/core/pcm_memory.c index b45f6aa32264..ae33e456708c 100644 --- a/sound/core/pcm_memory.c +++ b/sound/core/pcm_memory.c @@ -120,7 +120,6 @@ int snd_pcm_lib_preallocate_free_for_all(struct snd_pcm *pcm) snd_pcm_lib_preallocate_free(substream); return 0; } - EXPORT_SYMBOL(snd_pcm_lib_preallocate_free_for_all); #ifdef CONFIG_SND_VERBOSE_PROCFS @@ -263,7 +262,6 @@ int snd_pcm_lib_preallocate_pages(struct snd_pcm_substream *substream, substream->dma_buffer.dev.dev = data; return snd_pcm_lib_preallocate_pages1(substream, size, max); } - EXPORT_SYMBOL(snd_pcm_lib_preallocate_pages); /** @@ -292,7 +290,6 @@ int snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm, return err; return 0; } - EXPORT_SYMBOL(snd_pcm_lib_preallocate_pages_for_all); #ifdef CONFIG_SND_DMA_SGBUF @@ -314,7 +311,6 @@ struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, unsigne return NULL; return sgbuf->page_table[idx]; } - EXPORT_SYMBOL(snd_pcm_sgbuf_ops_page); #endif /* CONFIG_SND_DMA_SGBUF */ @@ -370,7 +366,6 @@ int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size) runtime->dma_bytes = size; return 1; /* area was changed */ } - EXPORT_SYMBOL(snd_pcm_lib_malloc_pages); /** @@ -398,7 +393,6 @@ int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream) snd_pcm_set_runtime_buffer(substream, NULL); return 0; } - EXPORT_SYMBOL(snd_pcm_lib_free_pages); int _snd_pcm_lib_alloc_vmalloc_buffer(struct snd_pcm_substream *substream, diff --git a/sound/core/pcm_misc.c b/sound/core/pcm_misc.c index 53dc37357bca..9be81025372f 100644 --- a/sound/core/pcm_misc.c +++ b/sound/core/pcm_misc.c @@ -23,6 +23,9 @@ #include <linux/export.h> #include <sound/core.h> #include <sound/pcm.h> + +#include "pcm_local.h" + #define SND_PCM_FORMAT_UNKNOWN (-1) /* NOTE: "signed" prefix must be given below since the default char is @@ -245,7 +248,6 @@ int snd_pcm_format_signed(snd_pcm_format_t format) return -EINVAL; return val; } - EXPORT_SYMBOL(snd_pcm_format_signed); /** @@ -264,7 +266,6 @@ int snd_pcm_format_unsigned(snd_pcm_format_t format) return val; return !val; } - EXPORT_SYMBOL(snd_pcm_format_unsigned); /** @@ -277,7 +278,6 @@ int snd_pcm_format_linear(snd_pcm_format_t format) { return snd_pcm_format_signed(format) >= 0; } - EXPORT_SYMBOL(snd_pcm_format_linear); /** @@ -296,7 +296,6 @@ int snd_pcm_format_little_endian(snd_pcm_format_t format) return -EINVAL; return val; } - EXPORT_SYMBOL(snd_pcm_format_little_endian); /** @@ -315,7 +314,6 @@ int snd_pcm_format_big_endian(snd_pcm_format_t format) return val; return !val; } - EXPORT_SYMBOL(snd_pcm_format_big_endian); /** @@ -334,7 +332,6 @@ int snd_pcm_format_width(snd_pcm_format_t format) return -EINVAL; return val; } - EXPORT_SYMBOL(snd_pcm_format_width); /** @@ -353,7 +350,6 @@ int snd_pcm_format_physical_width(snd_pcm_format_t format) return -EINVAL; return val; } - EXPORT_SYMBOL(snd_pcm_format_physical_width); /** @@ -371,7 +367,6 @@ ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples) return -EINVAL; return samples * phys_width / 8; } - EXPORT_SYMBOL(snd_pcm_format_size); /** @@ -388,7 +383,6 @@ const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format) return NULL; return pcm_formats[(INT)format].silence; } - EXPORT_SYMBOL(snd_pcm_format_silence_64); /** @@ -459,7 +453,6 @@ int snd_pcm_format_set_silence(snd_pcm_format_t format, void *data, unsigned int #endif return 0; } - EXPORT_SYMBOL(snd_pcm_format_set_silence); /** @@ -488,7 +481,6 @@ int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime) } return 0; } - EXPORT_SYMBOL(snd_pcm_limit_hw_rates); /** diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 13dec5ec93f2..b3d5bed75029 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -37,6 +37,18 @@ #include <sound/minors.h> #include <linux/uio.h> +#include "pcm_local.h" + +#ifdef CONFIG_SND_DEBUG +#define CREATE_TRACE_POINTS +#include "pcm_param_trace.h" +#else +#define trace_hw_mask_param_enabled() 0 +#define trace_hw_interval_param_enabled() 0 +#define trace_hw_mask_param(substream, type, index, prev, curr) +#define trace_hw_interval_param(substream, type, index, prev, curr) +#endif + /* * Compatibility */ @@ -181,20 +193,6 @@ void snd_pcm_stream_unlock_irqrestore(struct snd_pcm_substream *substream, } EXPORT_SYMBOL_GPL(snd_pcm_stream_unlock_irqrestore); -static inline mm_segment_t snd_enter_user(void) -{ - mm_segment_t fs = get_fs(); - set_fs(get_ds()); - return fs; -} - -static inline void snd_leave_user(mm_segment_t fs) -{ - set_fs(fs); -} - - - int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) { struct snd_pcm_runtime *runtime; @@ -214,11 +212,7 @@ int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) info->subdevices_avail = pstr->substream_count - pstr->substream_opened; strlcpy(info->subname, substream->name, sizeof(info->subname)); runtime = substream->runtime; - /* AB: FIXME!!! This is definitely nonsense */ - if (runtime) { - info->sync = runtime->sync; - substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info); - } + return 0; } @@ -255,205 +249,268 @@ static bool hw_support_mmap(struct snd_pcm_substream *substream) return true; } -#undef RULES_DEBUG - -#ifdef RULES_DEBUG -#define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v -static const char * const snd_pcm_hw_param_names[] = { - HW_PARAM(ACCESS), - HW_PARAM(FORMAT), - HW_PARAM(SUBFORMAT), - HW_PARAM(SAMPLE_BITS), - HW_PARAM(FRAME_BITS), - HW_PARAM(CHANNELS), - HW_PARAM(RATE), - HW_PARAM(PERIOD_TIME), - HW_PARAM(PERIOD_SIZE), - HW_PARAM(PERIOD_BYTES), - HW_PARAM(PERIODS), - HW_PARAM(BUFFER_TIME), - HW_PARAM(BUFFER_SIZE), - HW_PARAM(BUFFER_BYTES), - HW_PARAM(TICK_TIME), -}; -#endif - -int snd_pcm_hw_refine(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params) +static int constrain_mask_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) { + struct snd_pcm_hw_constraints *constrs = + &substream->runtime->hw_constraints; + struct snd_mask *m; unsigned int k; - struct snd_pcm_hardware *hw; - struct snd_interval *i = NULL; - struct snd_mask *m = NULL; - struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; - unsigned int rstamps[constrs->rules_num]; - unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; - unsigned int stamp = 2; - int changed, again; - - params->info = 0; - params->fifo_size = 0; - if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) - params->msbits = 0; - if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { - params->rate_num = 0; - params->rate_den = 0; - } + struct snd_mask old_mask; + int changed; for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { m = hw_param_mask(params, k); if (snd_mask_empty(m)) return -EINVAL; + + /* This parameter is not requested to change by a caller. */ if (!(params->rmask & (1 << k))) continue; -#ifdef RULES_DEBUG - pr_debug("%s = ", snd_pcm_hw_param_names[k]); - pr_cont("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); -#endif + + if (trace_hw_mask_param_enabled()) + old_mask = *m; + changed = snd_mask_refine(m, constrs_mask(constrs, k)); -#ifdef RULES_DEBUG - pr_cont("%04x%04x%04x%04x\n", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); -#endif - if (changed) - params->cmask |= 1 << k; if (changed < 0) return changed; + if (changed == 0) + continue; + + /* Set corresponding flag so that the caller gets it. */ + trace_hw_mask_param(substream, k, 0, &old_mask, m); + params->cmask |= 1 << k; } + return 0; +} + +static int constrain_interval_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_pcm_hw_constraints *constrs = + &substream->runtime->hw_constraints; + struct snd_interval *i; + unsigned int k; + struct snd_interval old_interval; + int changed; + for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { i = hw_param_interval(params, k); if (snd_interval_empty(i)) return -EINVAL; + + /* This parameter is not requested to change by a caller. */ if (!(params->rmask & (1 << k))) continue; -#ifdef RULES_DEBUG - pr_debug("%s = ", snd_pcm_hw_param_names[k]); - if (i->empty) - pr_cont("empty"); - else - pr_cont("%c%u %u%c", - i->openmin ? '(' : '[', i->min, - i->max, i->openmax ? ')' : ']'); - pr_cont(" -> "); -#endif + + if (trace_hw_interval_param_enabled()) + old_interval = *i; + changed = snd_interval_refine(i, constrs_interval(constrs, k)); -#ifdef RULES_DEBUG - if (i->empty) - pr_cont("empty\n"); - else - pr_cont("%c%u %u%c\n", - i->openmin ? '(' : '[', i->min, - i->max, i->openmax ? ')' : ']'); -#endif - if (changed) - params->cmask |= 1 << k; if (changed < 0) return changed; + if (changed == 0) + continue; + + /* Set corresponding flag so that the caller gets it. */ + trace_hw_interval_param(substream, k, 0, &old_interval, i); + params->cmask |= 1 << k; } + return 0; +} + +static int constrain_params_by_rules(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_pcm_hw_constraints *constrs = + &substream->runtime->hw_constraints; + unsigned int k; + unsigned int rstamps[constrs->rules_num]; + unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; + unsigned int stamp; + struct snd_pcm_hw_rule *r; + unsigned int d; + struct snd_mask old_mask; + struct snd_interval old_interval; + bool again; + int changed; + + /* + * Each application of rule has own sequence number. + * + * Each member of 'rstamps' array represents the sequence number of + * recent application of corresponding rule. + */ for (k = 0; k < constrs->rules_num; k++) rstamps[k] = 0; - for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) + + /* + * Each member of 'vstamps' array represents the sequence number of + * recent application of rule in which corresponding parameters were + * changed. + * + * In initial state, elements corresponding to parameters requested by + * a caller is 1. For unrequested parameters, corresponding members + * have 0 so that the parameters are never changed anymore. + */ + for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) vstamps[k] = (params->rmask & (1 << k)) ? 1 : 0; - do { - again = 0; - for (k = 0; k < constrs->rules_num; k++) { - struct snd_pcm_hw_rule *r = &constrs->rules[k]; - unsigned int d; - int doit = 0; - if (r->cond && !(r->cond & params->flags)) - continue; - for (d = 0; r->deps[d] >= 0; d++) { - if (vstamps[r->deps[d]] > rstamps[k]) { - doit = 1; - break; - } - } - if (!doit) - continue; -#ifdef RULES_DEBUG - pr_debug("Rule %d [%p]: ", k, r->func); - if (r->var >= 0) { - pr_cont("%s = ", snd_pcm_hw_param_names[r->var]); - if (hw_is_mask(r->var)) { - m = hw_param_mask(params, r->var); - pr_cont("%x", *m->bits); - } else { - i = hw_param_interval(params, r->var); - if (i->empty) - pr_cont("empty"); - else - pr_cont("%c%u %u%c", - i->openmin ? '(' : '[', i->min, - i->max, i->openmax ? ')' : ']'); - } - } -#endif - changed = r->func(params, r); -#ifdef RULES_DEBUG - if (r->var >= 0) { - pr_cont(" -> "); - if (hw_is_mask(r->var)) - pr_cont("%x", *m->bits); - else { - if (i->empty) - pr_cont("empty"); - else - pr_cont("%c%u %u%c", - i->openmin ? '(' : '[', i->min, - i->max, i->openmax ? ')' : ']'); - } + + /* Due to the above design, actual sequence number starts at 2. */ + stamp = 2; +retry: + /* Apply all rules in order. */ + again = false; + for (k = 0; k < constrs->rules_num; k++) { + r = &constrs->rules[k]; + + /* + * Check condition bits of this rule. When the rule has + * some condition bits, parameter without the bits is + * never processed. SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP + * is an example of the condition bits. + */ + if (r->cond && !(r->cond & params->flags)) + continue; + + /* + * The 'deps' array includes maximum three dependencies + * to SNDRV_PCM_HW_PARAM_XXXs for this rule. The fourth + * member of this array is a sentinel and should be + * negative value. + * + * This rule should be processed in this time when dependent + * parameters were changed at former applications of the other + * rules. + */ + for (d = 0; r->deps[d] >= 0; d++) { + if (vstamps[r->deps[d]] > rstamps[k]) + break; + } + if (r->deps[d] < 0) + continue; + + if (trace_hw_mask_param_enabled()) { + if (hw_is_mask(r->var)) + old_mask = *hw_param_mask(params, r->var); + } + if (trace_hw_interval_param_enabled()) { + if (hw_is_interval(r->var)) + old_interval = *hw_param_interval(params, r->var); + } + + changed = r->func(params, r); + if (changed < 0) + return changed; + + /* + * When the parameter is changed, notify it to the caller + * by corresponding returned bit, then preparing for next + * iteration. + */ + if (changed && r->var >= 0) { + if (hw_is_mask(r->var)) { + trace_hw_mask_param(substream, r->var, + k + 1, &old_mask, + hw_param_mask(params, r->var)); } - pr_cont("\n"); -#endif - rstamps[k] = stamp; - if (changed && r->var >= 0) { - params->cmask |= (1 << r->var); - vstamps[r->var] = stamp; - again = 1; + if (hw_is_interval(r->var)) { + trace_hw_interval_param(substream, r->var, + k + 1, &old_interval, + hw_param_interval(params, r->var)); } - if (changed < 0) - return changed; - stamp++; + + params->cmask |= (1 << r->var); + vstamps[r->var] = stamp; + again = true; } - } while (again); + + rstamps[k] = stamp++; + } + + /* Iterate to evaluate all rules till no parameters are changed. */ + if (again) + goto retry; + + return 0; +} + +static int fixup_unreferenced_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + const struct snd_interval *i; + const struct snd_mask *m; + int err; + if (!params->msbits) { - i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); + i = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); if (snd_interval_single(i)) params->msbits = snd_interval_value(i); } if (!params->rate_den) { - i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); + i = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE); if (snd_interval_single(i)) { params->rate_num = snd_interval_value(i); params->rate_den = 1; } } - hw = &substream->runtime->hw; + if (!params->fifo_size) { + m = hw_param_mask_c(params, SNDRV_PCM_HW_PARAM_FORMAT); + i = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS); + if (snd_mask_single(m) && snd_interval_single(i)) { + err = substream->ops->ioctl(substream, + SNDRV_PCM_IOCTL1_FIFO_SIZE, params); + if (err < 0) + return err; + } + } + if (!params->info) { - params->info = hw->info & ~(SNDRV_PCM_INFO_FIFO_IN_FRAMES | - SNDRV_PCM_INFO_DRAIN_TRIGGER); + params->info = substream->runtime->hw.info; + params->info &= ~(SNDRV_PCM_INFO_FIFO_IN_FRAMES | + SNDRV_PCM_INFO_DRAIN_TRIGGER); if (!hw_support_mmap(substream)) params->info &= ~(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID); } - if (!params->fifo_size) { - m = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); - i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); - if (snd_mask_min(m) == snd_mask_max(m) && - snd_interval_min(i) == snd_interval_max(i)) { - changed = substream->ops->ioctl(substream, - SNDRV_PCM_IOCTL1_FIFO_SIZE, params); - if (changed < 0) - return changed; - } + + return 0; +} + +int snd_pcm_hw_refine(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + int err; + + params->info = 0; + params->fifo_size = 0; + if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) + params->msbits = 0; + if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { + params->rate_num = 0; + params->rate_den = 0; } + + err = constrain_mask_params(substream, params); + if (err < 0) + return err; + + err = constrain_interval_params(substream, params); + if (err < 0) + return err; + + err = constrain_params_by_rules(substream, params); + if (err < 0) + return err; + params->rmask = 0; + return 0; } - EXPORT_SYMBOL(snd_pcm_hw_refine); static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, @@ -467,11 +524,16 @@ static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, return PTR_ERR(params); err = snd_pcm_hw_refine(substream, params); - if (copy_to_user(_params, params, sizeof(*params))) { - if (!err) - err = -EFAULT; - } + if (err < 0) + goto end; + + err = fixup_unreferenced_params(substream, params); + if (err < 0) + goto end; + if (copy_to_user(_params, params, sizeof(*params))) + err = -EFAULT; +end: kfree(params); return err; } @@ -509,6 +571,70 @@ static inline void snd_pcm_timer_notify(struct snd_pcm_substream *substream, #endif } +/** + * snd_pcm_hw_param_choose - choose a configuration defined by @params + * @pcm: PCM instance + * @params: the hw_params instance + * + * Choose one configuration from configuration space defined by @params. + * The configuration chosen is that obtained fixing in this order: + * first access, first format, first subformat, min channels, + * min rate, min period time, max buffer size, min tick time + * + * Return: Zero if successful, or a negative error code on failure. + */ +static int snd_pcm_hw_params_choose(struct snd_pcm_substream *pcm, + struct snd_pcm_hw_params *params) +{ + static const int vars[] = { + SNDRV_PCM_HW_PARAM_ACCESS, + SNDRV_PCM_HW_PARAM_FORMAT, + SNDRV_PCM_HW_PARAM_SUBFORMAT, + SNDRV_PCM_HW_PARAM_CHANNELS, + SNDRV_PCM_HW_PARAM_RATE, + SNDRV_PCM_HW_PARAM_PERIOD_TIME, + SNDRV_PCM_HW_PARAM_BUFFER_SIZE, + SNDRV_PCM_HW_PARAM_TICK_TIME, + -1 + }; + const int *v; + struct snd_mask old_mask; + struct snd_interval old_interval; + int changed; + + for (v = vars; *v != -1; v++) { + /* Keep old parameter to trace. */ + if (trace_hw_mask_param_enabled()) { + if (hw_is_mask(*v)) + old_mask = *hw_param_mask(params, *v); + } + if (trace_hw_interval_param_enabled()) { + if (hw_is_interval(*v)) + old_interval = *hw_param_interval(params, *v); + } + if (*v != SNDRV_PCM_HW_PARAM_BUFFER_SIZE) + changed = snd_pcm_hw_param_first(pcm, params, *v, NULL); + else + changed = snd_pcm_hw_param_last(pcm, params, *v, NULL); + if (snd_BUG_ON(changed < 0)) + return changed; + if (changed == 0) + continue; + + /* Trace the changed parameter. */ + if (hw_is_mask(*v)) { + trace_hw_mask_param(pcm, *v, 0, &old_mask, + hw_param_mask(params, *v)); + } + if (hw_is_interval(*v)) { + trace_hw_interval_param(pcm, *v, 0, &old_interval, + hw_param_interval(params, *v)); + } + } + + return 0; +} + static int snd_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { @@ -546,6 +672,10 @@ static int snd_pcm_hw_params(struct snd_pcm_substream *substream, if (err < 0) goto _error; + err = fixup_unreferenced_params(substream, params); + if (err < 0) + goto _error; + if (substream->ops->hw_params != NULL) { err = substream->ops->hw_params(substream, params); if (err < 0) @@ -621,11 +751,12 @@ static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, return PTR_ERR(params); err = snd_pcm_hw_params(substream, params); - if (copy_to_user(_params, params, sizeof(*params))) { - if (!err) - err = -EFAULT; - } + if (err < 0) + goto end; + if (copy_to_user(_params, params, sizeof(*params))) + err = -EFAULT; +end: kfree(params); return err; } @@ -1081,6 +1212,7 @@ static const struct action_ops snd_pcm_action_start = { * @substream: the PCM substream instance * * Return: Zero if successful, or a negative error code. + * The stream lock must be acquired before calling this function. */ int snd_pcm_start(struct snd_pcm_substream *substream) { @@ -1088,6 +1220,13 @@ int snd_pcm_start(struct snd_pcm_substream *substream) SNDRV_PCM_STATE_RUNNING); } +/* take the stream lock and start the streams */ +static int snd_pcm_start_lock_irq(struct snd_pcm_substream *substream) +{ + return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, + SNDRV_PCM_STATE_RUNNING); +} + /* * stop callbacks */ @@ -1139,7 +1278,6 @@ int snd_pcm_stop(struct snd_pcm_substream *substream, snd_pcm_state_t state) { return snd_pcm_action(&snd_pcm_action_stop, substream, state); } - EXPORT_SYMBOL(snd_pcm_stop); /** @@ -1314,7 +1452,6 @@ int snd_pcm_suspend(struct snd_pcm_substream *substream) snd_pcm_stream_unlock_irqrestore(substream, flags); return err; } - EXPORT_SYMBOL(snd_pcm_suspend); /** @@ -1346,7 +1483,6 @@ int snd_pcm_suspend_all(struct snd_pcm *pcm) } return 0; } - EXPORT_SYMBOL(snd_pcm_suspend_all); /* resume */ @@ -1397,14 +1533,7 @@ static const struct action_ops snd_pcm_action_resume = { static int snd_pcm_resume(struct snd_pcm_substream *substream) { - struct snd_card *card = substream->pcm->card; - int res; - - snd_power_lock(card); - if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) - res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); - snd_power_unlock(card); - return res; + return snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); } #else @@ -1423,17 +1552,9 @@ static int snd_pcm_resume(struct snd_pcm_substream *substream) */ static int snd_pcm_xrun(struct snd_pcm_substream *substream) { - struct snd_card *card = substream->pcm->card; struct snd_pcm_runtime *runtime = substream->runtime; int result; - snd_power_lock(card); - if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { - result = snd_power_wait(card, SNDRV_CTL_POWER_D0); - if (result < 0) - goto _unlock; - } - snd_pcm_stream_lock_irq(substream); switch (runtime->status->state) { case SNDRV_PCM_STATE_XRUN: @@ -1446,8 +1567,6 @@ static int snd_pcm_xrun(struct snd_pcm_substream *substream) result = -EBADFD; } snd_pcm_stream_unlock_irq(substream); - _unlock: - snd_power_unlock(card); return result; } @@ -1551,8 +1670,6 @@ static const struct action_ops snd_pcm_action_prepare = { static int snd_pcm_prepare(struct snd_pcm_substream *substream, struct file *file) { - int res; - struct snd_card *card = substream->pcm->card; int f_flags; if (file) @@ -1560,12 +1677,19 @@ static int snd_pcm_prepare(struct snd_pcm_substream *substream, else f_flags = substream->f_flags; - snd_power_lock(card); - if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) - res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, - substream, f_flags); - snd_power_unlock(card); - return res; + snd_pcm_stream_lock_irq(substream); + switch (substream->runtime->status->state) { + case SNDRV_PCM_STATE_PAUSED: + snd_pcm_pause(substream, 0); + /* fallthru */ + case SNDRV_PCM_STATE_SUSPENDED: + snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); + break; + } + snd_pcm_stream_unlock_irq(substream); + + return snd_pcm_action_nonatomic(&snd_pcm_action_prepare, + substream, f_flags); } /* @@ -1652,7 +1776,7 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream, struct snd_card *card; struct snd_pcm_runtime *runtime; struct snd_pcm_substream *s; - wait_queue_t wait; + wait_queue_entry_t wait; int result = 0; int nonblock = 0; @@ -1662,15 +1786,6 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream, if (runtime->status->state == SNDRV_PCM_STATE_OPEN) return -EBADFD; - snd_power_lock(card); - if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { - result = snd_power_wait(card, SNDRV_CTL_POWER_D0); - if (result < 0) { - snd_power_unlock(card); - return result; - } - } - if (file) { if (file->f_flags & O_NONBLOCK) nonblock = 1; @@ -1753,7 +1868,6 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream, unlock: snd_pcm_stream_unlock_irq(substream); up_read(&snd_pcm_link_rwsem); - snd_power_unlock(card); return result; } @@ -1773,8 +1887,7 @@ static int snd_pcm_drop(struct snd_pcm_substream *substream) runtime = substream->runtime; if (runtime->status->state == SNDRV_PCM_STATE_OPEN || - runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED || - runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) + runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) return -EBADFD; snd_pcm_stream_lock_irq(substream); @@ -1940,7 +2053,8 @@ static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) { unsigned int k; - struct snd_interval *i = hw_param_interval(params, rule->deps[0]); + const struct snd_interval *i = + hw_param_interval_c(params, rule->deps[0]); struct snd_mask m; struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); snd_mask_any(&m); @@ -1986,8 +2100,10 @@ static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, #error "Change this table" #endif -static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, - 48000, 64000, 88200, 96000, 176400, 192000 }; +static const unsigned int rates[] = { + 5512, 8000, 11025, 16000, 22050, 32000, 44100, + 48000, 64000, 88200, 96000, 176400, 192000 +}; const struct snd_pcm_hw_constraint_list snd_pcm_known_rates = { .count = ARRAY_SIZE(rates), @@ -2250,7 +2366,6 @@ void snd_pcm_release_substream(struct snd_pcm_substream *substream) } snd_pcm_detach_substream(substream); } - EXPORT_SYMBOL(snd_pcm_release_substream); int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, @@ -2292,7 +2407,6 @@ int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, snd_pcm_release_substream(substream); return err; } - EXPORT_SYMBOL(snd_pcm_open_substream); static int snd_pcm_open_file(struct file *file, @@ -2353,7 +2467,7 @@ static int snd_pcm_capture_open(struct inode *inode, struct file *file) static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) { int err; - wait_queue_t wait; + wait_queue_entry_t wait; if (pcm == NULL) { err = -ENODEV; @@ -2428,50 +2542,84 @@ static int snd_pcm_release(struct inode *inode, struct file *file) return 0; } -static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, - snd_pcm_uframes_t frames) +/* check and update PCM state; return 0 or a negative error + * call this inside PCM lock + */ +static int do_pcm_hwsync(struct snd_pcm_substream *substream) { - struct snd_pcm_runtime *runtime = substream->runtime; - snd_pcm_sframes_t appl_ptr; - snd_pcm_sframes_t ret; - snd_pcm_sframes_t hw_avail; - - if (frames == 0) - return 0; - - snd_pcm_stream_lock_irq(substream); - switch (runtime->status->state) { - case SNDRV_PCM_STATE_PREPARED: - break; + switch (substream->runtime->status->state) { case SNDRV_PCM_STATE_DRAINING: - case SNDRV_PCM_STATE_RUNNING: - if (snd_pcm_update_hw_ptr(substream) >= 0) - break; + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) + return -EBADFD; /* Fall through */ - case SNDRV_PCM_STATE_XRUN: - ret = -EPIPE; - goto __end; + case SNDRV_PCM_STATE_RUNNING: + return snd_pcm_update_hw_ptr(substream); + case SNDRV_PCM_STATE_PREPARED: + case SNDRV_PCM_STATE_PAUSED: + return 0; case SNDRV_PCM_STATE_SUSPENDED: - ret = -ESTRPIPE; - goto __end; + return -ESTRPIPE; + case SNDRV_PCM_STATE_XRUN: + return -EPIPE; default: - ret = -EBADFD; - goto __end; + return -EBADFD; } +} - hw_avail = snd_pcm_playback_hw_avail(runtime); - if (hw_avail <= 0) { - ret = 0; - goto __end; - } - if (frames > (snd_pcm_uframes_t)hw_avail) - frames = hw_avail; +/* increase the appl_ptr; returns the processed frames or a negative error */ +static snd_pcm_sframes_t forward_appl_ptr(struct snd_pcm_substream *substream, + snd_pcm_uframes_t frames, + snd_pcm_sframes_t avail) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + snd_pcm_sframes_t appl_ptr; + int ret; + + if (avail <= 0) + return 0; + if (frames > (snd_pcm_uframes_t)avail) + frames = avail; + appl_ptr = runtime->control->appl_ptr + frames; + if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) + appl_ptr -= runtime->boundary; + ret = pcm_lib_apply_appl_ptr(substream, appl_ptr); + return ret < 0 ? ret : frames; +} + +/* decrease the appl_ptr; returns the processed frames or a negative error */ +static snd_pcm_sframes_t rewind_appl_ptr(struct snd_pcm_substream *substream, + snd_pcm_uframes_t frames, + snd_pcm_sframes_t avail) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + snd_pcm_sframes_t appl_ptr; + int ret; + + if (avail <= 0) + return 0; + if (frames > (snd_pcm_uframes_t)avail) + frames = avail; appl_ptr = runtime->control->appl_ptr - frames; if (appl_ptr < 0) appl_ptr += runtime->boundary; - runtime->control->appl_ptr = appl_ptr; - ret = frames; - __end: + ret = pcm_lib_apply_appl_ptr(substream, appl_ptr); + return ret < 0 ? ret : frames; +} + +static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, + snd_pcm_uframes_t frames) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + snd_pcm_sframes_t ret; + + if (frames == 0) + return 0; + + snd_pcm_stream_lock_irq(substream); + ret = do_pcm_hwsync(substream); + if (!ret) + ret = rewind_appl_ptr(substream, frames, + snd_pcm_playback_hw_avail(runtime)); snd_pcm_stream_unlock_irq(substream); return ret; } @@ -2480,46 +2628,16 @@ static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substr snd_pcm_uframes_t frames) { struct snd_pcm_runtime *runtime = substream->runtime; - snd_pcm_sframes_t appl_ptr; snd_pcm_sframes_t ret; - snd_pcm_sframes_t hw_avail; if (frames == 0) return 0; snd_pcm_stream_lock_irq(substream); - switch (runtime->status->state) { - case SNDRV_PCM_STATE_PREPARED: - case SNDRV_PCM_STATE_DRAINING: - break; - case SNDRV_PCM_STATE_RUNNING: - if (snd_pcm_update_hw_ptr(substream) >= 0) - break; - /* Fall through */ - case SNDRV_PCM_STATE_XRUN: - ret = -EPIPE; - goto __end; - case SNDRV_PCM_STATE_SUSPENDED: - ret = -ESTRPIPE; - goto __end; - default: - ret = -EBADFD; - goto __end; - } - - hw_avail = snd_pcm_capture_hw_avail(runtime); - if (hw_avail <= 0) { - ret = 0; - goto __end; - } - if (frames > (snd_pcm_uframes_t)hw_avail) - frames = hw_avail; - appl_ptr = runtime->control->appl_ptr - frames; - if (appl_ptr < 0) - appl_ptr += runtime->boundary; - runtime->control->appl_ptr = appl_ptr; - ret = frames; - __end: + ret = do_pcm_hwsync(substream); + if (!ret) + ret = rewind_appl_ptr(substream, frames, + snd_pcm_capture_hw_avail(runtime)); snd_pcm_stream_unlock_irq(substream); return ret; } @@ -2528,47 +2646,16 @@ static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *subs snd_pcm_uframes_t frames) { struct snd_pcm_runtime *runtime = substream->runtime; - snd_pcm_sframes_t appl_ptr; snd_pcm_sframes_t ret; - snd_pcm_sframes_t avail; if (frames == 0) return 0; snd_pcm_stream_lock_irq(substream); - switch (runtime->status->state) { - case SNDRV_PCM_STATE_PREPARED: - case SNDRV_PCM_STATE_PAUSED: - break; - case SNDRV_PCM_STATE_DRAINING: - case SNDRV_PCM_STATE_RUNNING: - if (snd_pcm_update_hw_ptr(substream) >= 0) - break; - /* Fall through */ - case SNDRV_PCM_STATE_XRUN: - ret = -EPIPE; - goto __end; - case SNDRV_PCM_STATE_SUSPENDED: - ret = -ESTRPIPE; - goto __end; - default: - ret = -EBADFD; - goto __end; - } - - avail = snd_pcm_playback_avail(runtime); - if (avail <= 0) { - ret = 0; - goto __end; - } - if (frames > (snd_pcm_uframes_t)avail) - frames = avail; - appl_ptr = runtime->control->appl_ptr + frames; - if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) - appl_ptr -= runtime->boundary; - runtime->control->appl_ptr = appl_ptr; - ret = frames; - __end: + ret = do_pcm_hwsync(substream); + if (!ret) + ret = forward_appl_ptr(substream, frames, + snd_pcm_playback_avail(runtime)); snd_pcm_stream_unlock_irq(substream); return ret; } @@ -2577,123 +2664,47 @@ static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *subst snd_pcm_uframes_t frames) { struct snd_pcm_runtime *runtime = substream->runtime; - snd_pcm_sframes_t appl_ptr; snd_pcm_sframes_t ret; - snd_pcm_sframes_t avail; if (frames == 0) return 0; snd_pcm_stream_lock_irq(substream); - switch (runtime->status->state) { - case SNDRV_PCM_STATE_PREPARED: - case SNDRV_PCM_STATE_DRAINING: - case SNDRV_PCM_STATE_PAUSED: - break; - case SNDRV_PCM_STATE_RUNNING: - if (snd_pcm_update_hw_ptr(substream) >= 0) - break; - /* Fall through */ - case SNDRV_PCM_STATE_XRUN: - ret = -EPIPE; - goto __end; - case SNDRV_PCM_STATE_SUSPENDED: - ret = -ESTRPIPE; - goto __end; - default: - ret = -EBADFD; - goto __end; - } - - avail = snd_pcm_capture_avail(runtime); - if (avail <= 0) { - ret = 0; - goto __end; - } - if (frames > (snd_pcm_uframes_t)avail) - frames = avail; - appl_ptr = runtime->control->appl_ptr + frames; - if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) - appl_ptr -= runtime->boundary; - runtime->control->appl_ptr = appl_ptr; - ret = frames; - __end: + ret = do_pcm_hwsync(substream); + if (!ret) + ret = forward_appl_ptr(substream, frames, + snd_pcm_capture_avail(runtime)); snd_pcm_stream_unlock_irq(substream); return ret; } static int snd_pcm_hwsync(struct snd_pcm_substream *substream) { - struct snd_pcm_runtime *runtime = substream->runtime; int err; snd_pcm_stream_lock_irq(substream); - switch (runtime->status->state) { - case SNDRV_PCM_STATE_DRAINING: - if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) - goto __badfd; - /* Fall through */ - case SNDRV_PCM_STATE_RUNNING: - if ((err = snd_pcm_update_hw_ptr(substream)) < 0) - break; - /* Fall through */ - case SNDRV_PCM_STATE_PREPARED: - err = 0; - break; - case SNDRV_PCM_STATE_SUSPENDED: - err = -ESTRPIPE; - break; - case SNDRV_PCM_STATE_XRUN: - err = -EPIPE; - break; - default: - __badfd: - err = -EBADFD; - break; - } + 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 __user *res) +static snd_pcm_sframes_t snd_pcm_delay(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; int err; snd_pcm_sframes_t n = 0; snd_pcm_stream_lock_irq(substream); - switch (runtime->status->state) { - case SNDRV_PCM_STATE_DRAINING: - if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) - goto __badfd; - /* Fall through */ - case SNDRV_PCM_STATE_RUNNING: - if ((err = snd_pcm_update_hw_ptr(substream)) < 0) - break; - /* Fall through */ - case SNDRV_PCM_STATE_PREPARED: - case SNDRV_PCM_STATE_SUSPENDED: - err = 0; + err = do_pcm_hwsync(substream); + if (!err) { if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) n = snd_pcm_playback_hw_avail(runtime); else n = snd_pcm_capture_avail(runtime); n += runtime->delay; - break; - case SNDRV_PCM_STATE_XRUN: - err = -EPIPE; - break; - default: - __badfd: - err = -EBADFD; - break; } snd_pcm_stream_unlock_irq(substream); - if (!err) - if (put_user(n, res)) - err = -EFAULT; - return err; + return err < 0 ? err : n; } static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, @@ -2718,10 +2729,16 @@ static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, return err; } snd_pcm_stream_lock_irq(substream); - if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) - control->appl_ptr = sync_ptr.c.control.appl_ptr; - else + if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) { + err = pcm_lib_apply_appl_ptr(substream, + sync_ptr.c.control.appl_ptr); + if (err < 0) { + snd_pcm_stream_unlock_irq(substream); + return err; + } + } else { sync_ptr.c.control.appl_ptr = control->appl_ptr; + } if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) control->avail_min = sync_ptr.c.control.avail_min; else @@ -2749,10 +2766,12 @@ static int snd_pcm_tstamp(struct snd_pcm_substream *substream, int __user *_arg) return 0; } -static int snd_pcm_common_ioctl1(struct file *file, +static int snd_pcm_common_ioctl(struct file *file, struct snd_pcm_substream *substream, unsigned int cmd, void __user *arg) { + struct snd_pcm_file *pcm_file = file->private_data; + switch (cmd) { case SNDRV_PCM_IOCTL_PVERSION: return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; @@ -2762,6 +2781,11 @@ static int snd_pcm_common_ioctl1(struct file *file, return 0; case SNDRV_PCM_IOCTL_TTSTAMP: return snd_pcm_tstamp(substream, arg); + case SNDRV_PCM_IOCTL_USER_PVERSION: + if (get_user(pcm_file->user_pversion, + (unsigned int __user *)arg)) + return -EFAULT; + return 0; case SNDRV_PCM_IOCTL_HW_REFINE: return snd_pcm_hw_refine_user(substream, arg); case SNDRV_PCM_IOCTL_HW_PARAMS: @@ -2781,7 +2805,7 @@ static int snd_pcm_common_ioctl1(struct file *file, case SNDRV_PCM_IOCTL_RESET: return snd_pcm_reset(substream); case SNDRV_PCM_IOCTL_START: - return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); + return snd_pcm_start_lock_irq(substream); case SNDRV_PCM_IOCTL_LINK: return snd_pcm_link(substream, (int)(unsigned long) arg); case SNDRV_PCM_IOCTL_UNLINK: @@ -2793,7 +2817,16 @@ static int snd_pcm_common_ioctl1(struct file *file, case SNDRV_PCM_IOCTL_HWSYNC: return snd_pcm_hwsync(substream); case SNDRV_PCM_IOCTL_DELAY: - return snd_pcm_delay(substream, arg); + { + snd_pcm_sframes_t delay = snd_pcm_delay(substream); + snd_pcm_sframes_t __user *res = arg; + + if (delay < 0) + return delay; + if (put_user(delay, res)) + return -EFAULT; + return 0; + } case SNDRV_PCM_IOCTL_SYNC_PTR: return snd_pcm_sync_ptr(substream, arg); #ifdef CONFIG_SND_SUPPORT_OLD_API @@ -2807,23 +2840,34 @@ static int snd_pcm_common_ioctl1(struct file *file, case SNDRV_PCM_IOCTL_DROP: return snd_pcm_drop(substream); case SNDRV_PCM_IOCTL_PAUSE: - { - int res; - snd_pcm_stream_lock_irq(substream); - res = snd_pcm_pause(substream, (int)(unsigned long)arg); - snd_pcm_stream_unlock_irq(substream); - return res; - } + return snd_pcm_action_lock_irq(&snd_pcm_action_pause, + substream, + (int)(unsigned long)arg); } pcm_dbg(substream->pcm, "unknown ioctl = 0x%x\n", cmd); return -ENOTTY; } +static int snd_pcm_common_ioctl1(struct file *file, + struct snd_pcm_substream *substream, + unsigned int cmd, void __user *arg) +{ + struct snd_card *card = substream->pcm->card; + int res; + + snd_power_lock(card); + res = snd_power_wait(card, SNDRV_CTL_POWER_D0); + if (res >= 0) + res = snd_pcm_common_ioctl(file, substream, cmd, arg); + snd_power_unlock(card); + return res; +} + static int snd_pcm_playback_ioctl1(struct file *file, struct snd_pcm_substream *substream, unsigned int cmd, void __user *arg) { - if (snd_BUG_ON(!substream)) + if (PCM_RUNTIME_CHECK(substream)) return -ENXIO; if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) return -EINVAL; @@ -2903,7 +2947,7 @@ static int snd_pcm_capture_ioctl1(struct file *file, struct snd_pcm_substream *substream, unsigned int cmd, void __user *arg) { - if (snd_BUG_ON(!substream)) + if (PCM_RUNTIME_CHECK(substream)) return -ENXIO; if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_CAPTURE)) return -EINVAL; @@ -3007,30 +3051,55 @@ static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, (void __user *)arg); } +/** + * snd_pcm_kernel_ioctl - Execute PCM ioctl in the kernel-space + * @substream: PCM substream + * @cmd: IOCTL cmd + * @arg: IOCTL argument + * + * The function is provided primarily for OSS layer and USB gadget drivers, + * and it allows only the limited set of ioctls (hw_params, sw_params, + * prepare, start, drain, drop, forward). + */ int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg) { - mm_segment_t fs; - int result; + snd_pcm_uframes_t *frames = arg; + snd_pcm_sframes_t result; - fs = snd_enter_user(); - switch (substream->stream) { - case SNDRV_PCM_STREAM_PLAYBACK: - result = snd_pcm_playback_ioctl1(NULL, substream, cmd, - (void __user *)arg); - break; - case SNDRV_PCM_STREAM_CAPTURE: - result = snd_pcm_capture_ioctl1(NULL, substream, cmd, - (void __user *)arg); - break; + switch (cmd) { + case SNDRV_PCM_IOCTL_FORWARD: + { + /* provided only for OSS; capture-only and no value returned */ + if (substream->stream != SNDRV_PCM_STREAM_CAPTURE) + return -EINVAL; + result = snd_pcm_capture_forward(substream, *frames); + return result < 0 ? result : 0; + } + case SNDRV_PCM_IOCTL_HW_PARAMS: + return snd_pcm_hw_params(substream, arg); + case SNDRV_PCM_IOCTL_SW_PARAMS: + return snd_pcm_sw_params(substream, arg); + case SNDRV_PCM_IOCTL_PREPARE: + return snd_pcm_prepare(substream, NULL); + case SNDRV_PCM_IOCTL_START: + return snd_pcm_start_lock_irq(substream); + case SNDRV_PCM_IOCTL_DRAIN: + return snd_pcm_drain(substream, NULL); + case SNDRV_PCM_IOCTL_DROP: + return snd_pcm_drop(substream); + case SNDRV_PCM_IOCTL_DELAY: + { + result = snd_pcm_delay(substream); + if (result < 0) + return result; + *frames = result; + return 0; + } default: - result = -EINVAL; - break; + return -EINVAL; } - snd_leave_user(fs); - return result; } - EXPORT_SYMBOL(snd_pcm_kernel_ioctl); static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, @@ -3314,10 +3383,41 @@ static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; return 0; } + +static bool pcm_status_mmap_allowed(struct snd_pcm_file *pcm_file) +{ + if (pcm_file->no_compat_mmap) + return false; + /* See pcm_control_mmap_allowed() below. + * Since older alsa-lib requires both status and control mmaps to be + * coupled, we have to disable the status mmap for old alsa-lib, too. + */ + if (pcm_file->user_pversion < SNDRV_PROTOCOL_VERSION(2, 0, 14) && + (pcm_file->substream->runtime->hw.info & SNDRV_PCM_INFO_SYNC_APPLPTR)) + return false; + return true; +} + +static bool pcm_control_mmap_allowed(struct snd_pcm_file *pcm_file) +{ + if (pcm_file->no_compat_mmap) + return false; + /* Disallow the control mmap when SYNC_APPLPTR flag is set; + * it enforces the user-space to fall back to snd_pcm_sync_ptr(), + * thus it effectively assures the manual update of appl_ptr. + */ + if (pcm_file->substream->runtime->hw.info & SNDRV_PCM_INFO_SYNC_APPLPTR) + return false; + return true; +} + #else /* ! coherent mmap */ /* * don't support mmap for status and control records. */ +#define pcm_status_mmap_allowed(pcm_file) false +#define pcm_control_mmap_allowed(pcm_file) false + static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area) { @@ -3437,7 +3537,6 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, area->vm_page_prot = pgprot_noncached(area->vm_page_prot); return vm_iomap_memory(area, runtime->dma_addr, runtime->dma_bytes); } - EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); #endif /* SNDRV_PCM_INFO_MMAP */ @@ -3486,7 +3585,6 @@ int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, atomic_inc(&substream->mmap_count); return err; } - EXPORT_SYMBOL(snd_pcm_mmap_data); static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) @@ -3503,11 +3601,11 @@ static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) offset = area->vm_pgoff << PAGE_SHIFT; switch (offset) { case SNDRV_PCM_MMAP_OFFSET_STATUS: - if (pcm_file->no_compat_mmap) + if (!pcm_status_mmap_allowed(pcm_file)) return -ENXIO; return snd_pcm_mmap_status(substream, file, area); case SNDRV_PCM_MMAP_OFFSET_CONTROL: - if (pcm_file->no_compat_mmap) + if (!pcm_control_mmap_allowed(pcm_file)) return -ENXIO; return snd_pcm_mmap_control(substream, file, area); default: @@ -3603,12 +3701,17 @@ static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, } snd_pcm_hw_convert_from_old_params(params, oparams); err = snd_pcm_hw_refine(substream, params); - snd_pcm_hw_convert_to_old_params(oparams, params); - if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { - if (!err) - err = -EFAULT; - } + if (err < 0) + goto out_old; + err = fixup_unreferenced_params(substream, params); + if (err < 0) + goto out_old; + + snd_pcm_hw_convert_to_old_params(oparams, params); + if (copy_to_user(_oparams, oparams, sizeof(*oparams))) + err = -EFAULT; +out_old: kfree(oparams); out: kfree(params); @@ -3631,14 +3734,16 @@ static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, err = PTR_ERR(oparams); goto out; } + snd_pcm_hw_convert_from_old_params(params, oparams); err = snd_pcm_hw_params(substream, params); - snd_pcm_hw_convert_to_old_params(oparams, params); - if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { - if (!err) - err = -EFAULT; - } + if (err < 0) + goto out_old; + snd_pcm_hw_convert_to_old_params(oparams, params); + if (copy_to_user(_oparams, oparams, sizeof(*oparams))) + err = -EFAULT; +out_old: kfree(oparams); out: kfree(params); diff --git a/sound/core/pcm_param_trace.h b/sound/core/pcm_param_trace.h new file mode 100644 index 000000000000..86c8d658a25c --- /dev/null +++ b/sound/core/pcm_param_trace.h @@ -0,0 +1,142 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM snd_pcm + +#if !defined(_PCM_PARAMS_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) +#define _PCM_PARAMS_TRACE_H + +#include <linux/tracepoint.h> + +#define HW_PARAM_ENTRY(param) {SNDRV_PCM_HW_PARAM_##param, #param} +#define hw_param_labels \ + HW_PARAM_ENTRY(ACCESS), \ + HW_PARAM_ENTRY(FORMAT), \ + HW_PARAM_ENTRY(SUBFORMAT), \ + HW_PARAM_ENTRY(SAMPLE_BITS), \ + HW_PARAM_ENTRY(FRAME_BITS), \ + HW_PARAM_ENTRY(CHANNELS), \ + HW_PARAM_ENTRY(RATE), \ + HW_PARAM_ENTRY(PERIOD_TIME), \ + HW_PARAM_ENTRY(PERIOD_SIZE), \ + HW_PARAM_ENTRY(PERIOD_BYTES), \ + HW_PARAM_ENTRY(PERIODS), \ + HW_PARAM_ENTRY(BUFFER_TIME), \ + HW_PARAM_ENTRY(BUFFER_SIZE), \ + HW_PARAM_ENTRY(BUFFER_BYTES), \ + HW_PARAM_ENTRY(TICK_TIME) + +TRACE_EVENT(hw_mask_param, + TP_PROTO(struct snd_pcm_substream *substream, snd_pcm_hw_param_t type, int index, const struct snd_mask *prev, const struct snd_mask *curr), + TP_ARGS(substream, type, index, prev, curr), + TP_STRUCT__entry( + __field(int, card) + __field(int, device) + __field(int, subdevice) + __field(int, direction) + __field(snd_pcm_hw_param_t, type) + __field(int, index) + __field(int, total) + __array(__u32, prev_bits, 8) + __array(__u32, curr_bits, 8) + ), + TP_fast_assign( + __entry->card = substream->pcm->card->number; + __entry->device = substream->pcm->device; + __entry->subdevice = substream->number; + __entry->direction = substream->stream; + __entry->type = type; + __entry->index = index; + __entry->total = substream->runtime->hw_constraints.rules_num; + memcpy(__entry->prev_bits, prev->bits, sizeof(__u32) * 8); + memcpy(__entry->curr_bits, curr->bits, sizeof(__u32) * 8); + ), + TP_printk("pcmC%dD%d%s:%d %03d/%03d %s %08x%08x%08x%08x %08x%08x%08x%08x", + __entry->card, + __entry->device, + __entry->direction ? "c" : "p", + __entry->subdevice, + __entry->index, + __entry->total, + __print_symbolic(__entry->type, hw_param_labels), + __entry->prev_bits[3], __entry->prev_bits[2], + __entry->prev_bits[1], __entry->prev_bits[0], + __entry->curr_bits[3], __entry->curr_bits[2], + __entry->curr_bits[1], __entry->curr_bits[0] + ) +); + +TRACE_EVENT(hw_interval_param, + TP_PROTO(struct snd_pcm_substream *substream, snd_pcm_hw_param_t type, int index, const struct snd_interval *prev, const struct snd_interval *curr), + TP_ARGS(substream, type, index, prev, curr), + TP_STRUCT__entry( + __field(int, card) + __field(int, device) + __field(int, subdevice) + __field(int, direction) + __field(snd_pcm_hw_param_t, type) + __field(int, index) + __field(int, total) + __field(unsigned int, prev_min) + __field(unsigned int, prev_max) + __field(unsigned int, prev_openmin) + __field(unsigned int, prev_openmax) + __field(unsigned int, prev_integer) + __field(unsigned int, prev_empty) + __field(unsigned int, curr_min) + __field(unsigned int, curr_max) + __field(unsigned int, curr_openmin) + __field(unsigned int, curr_openmax) + __field(unsigned int, curr_integer) + __field(unsigned int, curr_empty) + ), + TP_fast_assign( + __entry->card = substream->pcm->card->number; + __entry->device = substream->pcm->device; + __entry->subdevice = substream->number; + __entry->direction = substream->stream; + __entry->type = type; + __entry->index = index; + __entry->total = substream->runtime->hw_constraints.rules_num; + __entry->prev_min = prev->min; + __entry->prev_max = prev->max; + __entry->prev_openmin = prev->openmin; + __entry->prev_openmax = prev->openmax; + __entry->prev_integer = prev->integer; + __entry->prev_empty = prev->empty; + __entry->curr_min = curr->min; + __entry->curr_max = curr->max; + __entry->curr_openmin = curr->openmin; + __entry->curr_openmax = curr->openmax; + __entry->curr_integer = curr->integer; + __entry->curr_empty = curr->empty; + ), + TP_printk("pcmC%dD%d%s:%d %03d/%03d %s %d %d %s%u %u%s %d %d %s%u %u%s", + __entry->card, + __entry->device, + __entry->direction ? "c" : "p", + __entry->subdevice, + __entry->index, + __entry->total, + __print_symbolic(__entry->type, hw_param_labels), + __entry->prev_empty, + __entry->prev_integer, + __entry->prev_openmin ? "(" : "[", + __entry->prev_min, + __entry->prev_max, + __entry->prev_openmax ? ")" : "]", + __entry->curr_empty, + __entry->curr_integer, + __entry->curr_openmin ? "(" : "[", + __entry->curr_min, + __entry->curr_max, + __entry->curr_openmax ? ")" : "]" + ) +); + +#endif /* _PCM_PARAMS_TRACE_H */ + +/* This part must be outside protection */ +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE pcm_param_trace +#include <trace/define_trace.h> diff --git a/sound/core/pcm_timer.c b/sound/core/pcm_timer.c index 20ecd8f18080..11389f13de73 100644 --- a/sound/core/pcm_timer.c +++ b/sound/core/pcm_timer.c @@ -25,6 +25,8 @@ #include <sound/pcm.h> #include <sound/timer.h> +#include "pcm_local.h" + /* * Timer functions */ @@ -33,8 +35,8 @@ void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream) { unsigned long rate, mult, fsize, l, post; struct snd_pcm_runtime *runtime = substream->runtime; - - mult = 1000000000; + + mult = 1000000000; rate = runtime->rate; if (snd_BUG_ON(!rate)) return; @@ -65,7 +67,7 @@ void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream) static unsigned long snd_pcm_timer_resolution(struct snd_timer * timer) { struct snd_pcm_substream *substream; - + substream = timer->private_data; return substream->runtime ? substream->runtime->timer_resolution : 0; } @@ -73,7 +75,7 @@ static unsigned long snd_pcm_timer_resolution(struct snd_timer * timer) static int snd_pcm_timer_start(struct snd_timer * timer) { struct snd_pcm_substream *substream; - + substream = snd_timer_chip(timer); substream->timer_running = 1; return 0; @@ -82,7 +84,7 @@ static int snd_pcm_timer_start(struct snd_timer * timer) static int snd_pcm_timer_stop(struct snd_timer * timer) { struct snd_pcm_substream *substream; - + substream = snd_timer_chip(timer); substream->timer_running = 0; return 0; @@ -112,7 +114,7 @@ void snd_pcm_timer_init(struct snd_pcm_substream *substream) { struct snd_timer_id tid; struct snd_timer *timer; - + tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE; tid.dev_class = SNDRV_TIMER_CLASS_PCM; tid.card = substream->pcm->card->number; diff --git a/sound/core/pcm_trace.h b/sound/core/pcm_trace.h index b63b654da5ff..3ddec1b8ae46 100644 --- a/sound/core/pcm_trace.h +++ b/sound/core/pcm_trace.h @@ -34,9 +34,9 @@ TRACE_EVENT(hwptr, __entry->old_hw_ptr = (substream)->runtime->status->hw_ptr; __entry->hw_ptr_base = (substream)->runtime->hw_ptr_base; ), - TP_printk("pcmC%dD%d%c/sub%d: %s: pos=%lu, old=%lu, base=%lu, period=%lu, buf=%lu", + TP_printk("pcmC%dD%d%s/sub%d: %s: pos=%lu, old=%lu, base=%lu, period=%lu, buf=%lu", __entry->card, __entry->device, - __entry->stream == SNDRV_PCM_STREAM_PLAYBACK ? 'p' : 'c', + __entry->stream == SNDRV_PCM_STREAM_PLAYBACK ? "p" : "c", __entry->number, __entry->in_interrupt ? "IRQ" : "POS", (unsigned long)__entry->pos, @@ -69,9 +69,9 @@ TRACE_EVENT(xrun, __entry->old_hw_ptr = (substream)->runtime->status->hw_ptr; __entry->hw_ptr_base = (substream)->runtime->hw_ptr_base; ), - TP_printk("pcmC%dD%d%c/sub%d: XRUN: old=%lu, base=%lu, period=%lu, buf=%lu", + TP_printk("pcmC%dD%d%s/sub%d: XRUN: old=%lu, base=%lu, period=%lu, buf=%lu", __entry->card, __entry->device, - __entry->stream == SNDRV_PCM_STREAM_PLAYBACK ? 'p' : 'c', + __entry->stream == SNDRV_PCM_STREAM_PLAYBACK ? "p" : "c", __entry->number, (unsigned long)__entry->old_hw_ptr, (unsigned long)__entry->hw_ptr_base, @@ -96,12 +96,50 @@ TRACE_EVENT(hw_ptr_error, __entry->stream = (substream)->stream; __entry->reason = (why); ), - TP_printk("pcmC%dD%d%c/sub%d: ERROR: %s", + TP_printk("pcmC%dD%d%s/sub%d: ERROR: %s", __entry->card, __entry->device, - __entry->stream == SNDRV_PCM_STREAM_PLAYBACK ? 'p' : 'c', + __entry->stream == SNDRV_PCM_STREAM_PLAYBACK ? "p" : "c", __entry->number, __entry->reason) ); +TRACE_EVENT(applptr, + TP_PROTO(struct snd_pcm_substream *substream, snd_pcm_uframes_t prev, snd_pcm_uframes_t curr), + TP_ARGS(substream, prev, curr), + TP_STRUCT__entry( + __field( unsigned int, card ) + __field( unsigned int, device ) + __field( unsigned int, number ) + __field( unsigned int, stream ) + __field( snd_pcm_uframes_t, prev ) + __field( snd_pcm_uframes_t, curr ) + __field( snd_pcm_uframes_t, avail ) + __field( snd_pcm_uframes_t, period_size ) + __field( snd_pcm_uframes_t, buffer_size ) + ), + TP_fast_assign( + __entry->card = (substream)->pcm->card->number; + __entry->device = (substream)->pcm->device; + __entry->number = (substream)->number; + __entry->stream = (substream)->stream; + __entry->prev = (prev); + __entry->curr = (curr); + __entry->avail = (substream)->stream ? snd_pcm_capture_avail(substream->runtime) : snd_pcm_playback_avail(substream->runtime); + __entry->period_size = (substream)->runtime->period_size; + __entry->buffer_size = (substream)->runtime->buffer_size; + ), + TP_printk("pcmC%dD%d%s/sub%d: prev=%lu, curr=%lu, avail=%lu, period=%lu, buf=%lu", + __entry->card, + __entry->device, + __entry->stream ? "c" : "p", + __entry->number, + __entry->prev, + __entry->curr, + __entry->avail, + __entry->period_size, + __entry->buffer_size + ) +); + #endif /* _PCM_TRACE_H */ /* This part must be outside protection */ diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index ab890336175f..b3b353d72527 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -368,7 +368,7 @@ static int snd_rawmidi_open(struct inode *inode, struct file *file) int err; struct snd_rawmidi *rmidi; struct snd_rawmidi_file *rawmidi_file = NULL; - wait_queue_t wait; + wait_queue_entry_t wait; if ((file->f_flags & O_APPEND) && !(file->f_flags & O_NONBLOCK)) return -EINVAL; /* invalid combination */ @@ -1002,7 +1002,7 @@ static ssize_t snd_rawmidi_read(struct file *file, char __user *buf, size_t coun while (count > 0) { spin_lock_irq(&runtime->lock); while (!snd_rawmidi_ready(substream)) { - wait_queue_t wait; + wait_queue_entry_t wait; if ((file->f_flags & O_NONBLOCK) != 0 || result > 0) { spin_unlock_irq(&runtime->lock); return result > 0 ? result : -EAGAIN; @@ -1306,7 +1306,7 @@ static ssize_t snd_rawmidi_write(struct file *file, const char __user *buf, while (count > 0) { spin_lock_irq(&runtime->lock); while (!snd_rawmidi_ready_append(substream, count)) { - wait_queue_t wait; + wait_queue_entry_t wait; if (file->f_flags & O_NONBLOCK) { spin_unlock_irq(&runtime->lock); return result > 0 ? result : -EAGAIN; @@ -1338,7 +1338,7 @@ static ssize_t snd_rawmidi_write(struct file *file, const char __user *buf, if (file->f_flags & O_DSYNC) { spin_lock_irq(&runtime->lock); while (runtime->avail != runtime->buffer_size) { - wait_queue_t wait; + wait_queue_entry_t wait; unsigned int last_avail = runtime->avail; init_waitqueue_entry(&wait, current); add_wait_queue(&runtime->sleep, &wait); @@ -1610,7 +1610,7 @@ static int snd_rawmidi_dev_free(struct snd_device *device) return snd_rawmidi_free(rmidi); } -#if IS_REACHABLE(CONFIG_SND_SEQUENCER) +#if IS_ENABLED(CONFIG_SND_SEQUENCER) static void snd_rawmidi_dev_seq_free(struct snd_seq_device *device) { struct snd_rawmidi *rmidi = device->private_data; @@ -1691,7 +1691,7 @@ static int snd_rawmidi_dev_register(struct snd_device *device) } } rmidi->proc_entry = entry; -#if IS_REACHABLE(CONFIG_SND_SEQUENCER) +#if IS_ENABLED(CONFIG_SND_SEQUENCER) if (!rmidi->ops || !rmidi->ops->dev_register) { /* own registration mechanism */ if (snd_seq_device_new(rmidi->card, rmidi->device, SNDRV_SEQ_DEV_ID_MIDISYNTH, 0, &rmidi->seq_dev) >= 0) { rmidi->seq_dev->private_data = rmidi; diff --git a/sound/core/seq/Kconfig b/sound/core/seq/Kconfig index b851fd890a89..a536760a94c2 100644 --- a/sound/core/seq/Kconfig +++ b/sound/core/seq/Kconfig @@ -1,16 +1,62 @@ -# define SND_XXX_SEQ to min(SND_SEQUENCER,SND_XXX) +config SND_SEQUENCER + tristate "Sequencer support" + select SND_TIMER + select SND_SEQ_DEVICE + help + Say Y or M to enable MIDI sequencer and router support. This + feature allows routing and enqueueing of MIDI events. Events + can be processed at a given time. -config SND_RAWMIDI_SEQ - def_tristate SND_SEQUENCER && SND_RAWMIDI + Many programs require this feature, so you should enable it + unless you know what you're doing. -config SND_OPL3_LIB_SEQ - def_tristate SND_SEQUENCER && SND_OPL3_LIB +if SND_SEQUENCER -config SND_OPL4_LIB_SEQ - def_tristate SND_SEQUENCER && SND_OPL4_LIB +config SND_SEQ_DUMMY + tristate "Sequencer dummy client" + help + Say Y here to enable the dummy sequencer client. This client + is a simple MIDI-through client: all normal input events are + redirected to the output port immediately. -config SND_SBAWE_SEQ - def_tristate SND_SEQUENCER && SND_SBAWE + You don't need this unless you want to connect many MIDI + devices or applications together. -config SND_EMU10K1_SEQ - def_tristate SND_SEQUENCER && SND_EMU10K1 + To compile this driver as a module, choose M here: the module + will be called snd-seq-dummy. + +config SND_SEQUENCER_OSS + tristate "OSS Sequencer API" + depends on SND_OSSEMUL + select SND_SEQ_MIDI_EVENT + help + Say Y here to enable OSS sequencer emulation (both + /dev/sequencer and /dev/music interfaces). + + Many programs still use the OSS API, so say Y. + + To compile this driver as a module, choose M here: the module + will be called snd-seq-oss. + +config SND_SEQ_HRTIMER_DEFAULT + bool "Use HR-timer as default sequencer timer" + depends on SND_HRTIMER + default y + help + Say Y here to use the HR-timer backend as the default sequencer + timer. + +config SND_SEQ_MIDI_EVENT + def_tristate SND_RAWMIDI + +config SND_SEQ_MIDI + tristate + select SND_SEQ_MIDI_EVENT + +config SND_SEQ_MIDI_EMUL + tristate + +config SND_SEQ_VIRMIDI + tristate + +endif # SND_SEQUENCER diff --git a/sound/core/seq/Makefile b/sound/core/seq/Makefile index b65fa5a1943b..68fd367ac39c 100644 --- a/sound/core/seq/Makefile +++ b/sound/core/seq/Makefile @@ -3,7 +3,6 @@ # Copyright (c) 1999 by Jaroslav Kysela <[email protected]> # -snd-seq-device-objs := seq_device.o snd-seq-objs := seq.o seq_lock.o seq_clientmgr.o seq_memory.o seq_queue.o \ seq_fifo.o seq_prioq.o seq_timer.o \ seq_system.o seq_ports.o @@ -14,17 +13,11 @@ snd-seq-midi-event-objs := seq_midi_event.o snd-seq-dummy-objs := seq_dummy.o snd-seq-virmidi-objs := seq_virmidi.o -obj-$(CONFIG_SND_SEQUENCER) += snd-seq.o snd-seq-device.o -ifeq ($(CONFIG_SND_SEQUENCER_OSS),y) - obj-$(CONFIG_SND_SEQUENCER) += snd-seq-midi-event.o - obj-$(CONFIG_SND_SEQUENCER) += oss/ -endif -obj-$(CONFIG_SND_SEQ_DUMMY) += snd-seq-dummy.o +obj-$(CONFIG_SND_SEQUENCER) += snd-seq.o +obj-$(CONFIG_SND_SEQUENCER_OSS) += oss/ -# Toplevel Module Dependency -obj-$(CONFIG_SND_VIRMIDI) += snd-seq-virmidi.o snd-seq-midi-event.o -obj-$(CONFIG_SND_RAWMIDI_SEQ) += snd-seq-midi.o snd-seq-midi-event.o -obj-$(CONFIG_SND_OPL3_LIB_SEQ) += snd-seq-midi-event.o snd-seq-midi-emul.o -obj-$(CONFIG_SND_OPL4_LIB_SEQ) += snd-seq-midi-event.o snd-seq-midi-emul.o -obj-$(CONFIG_SND_SBAWE_SEQ) += snd-seq-midi-emul.o snd-seq-virmidi.o -obj-$(CONFIG_SND_EMU10K1_SEQ) += snd-seq-midi-emul.o snd-seq-virmidi.o +obj-$(CONFIG_SND_SEQ_DUMMY) += snd-seq-dummy.o +obj-$(CONFIG_SND_SEQ_MIDI) += snd-seq-midi.o +obj-$(CONFIG_SND_SEQ_MIDI_EMUL) += snd-seq-midi-emul.o +obj-$(CONFIG_SND_SEQ_MIDI_EVENT) += snd-seq-midi-event.o +obj-$(CONFIG_SND_SEQ_VIRMIDI) += snd-seq-virmidi.o diff --git a/sound/core/seq/oss/Makefile b/sound/core/seq/oss/Makefile index b38406b8463c..4ea4e3eea6b7 100644 --- a/sound/core/seq/oss/Makefile +++ b/sound/core/seq/oss/Makefile @@ -7,4 +7,4 @@ snd-seq-oss-objs := seq_oss.o seq_oss_init.o seq_oss_timer.o seq_oss_ioctl.o \ seq_oss_event.o seq_oss_rw.o seq_oss_synth.o \ seq_oss_midi.o seq_oss_readq.o seq_oss_writeq.o -obj-$(CONFIG_SND_SEQUENCER) += snd-seq-oss.o +obj-$(CONFIG_SND_SEQUENCER_OSS) += snd-seq-oss.o diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index f3b1d7f50b81..272c55fe17c8 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -1668,7 +1668,6 @@ int snd_seq_set_queue_tempo(int client, struct snd_seq_queue_tempo *tempo) return -EPERM; return snd_seq_queue_timer_set_tempo(tempo->queue, client, tempo); } - EXPORT_SYMBOL(snd_seq_set_queue_tempo); static int snd_seq_ioctl_set_queue_tempo(struct snd_seq_client *client, @@ -2200,7 +2199,6 @@ int snd_seq_create_kernel_client(struct snd_card *card, int client_index, /* return client number to caller */ return client->number; } - EXPORT_SYMBOL(snd_seq_create_kernel_client); /* exported to kernel modules */ @@ -2219,7 +2217,6 @@ int snd_seq_delete_kernel_client(int client) kfree(ptr); return 0; } - EXPORT_SYMBOL(snd_seq_delete_kernel_client); /* skeleton to enqueue event, called from snd_seq_kernel_client_enqueue @@ -2269,7 +2266,6 @@ int snd_seq_kernel_client_enqueue(int client, struct snd_seq_event * ev, { return kernel_client_enqueue(client, ev, NULL, 0, atomic, hop); } - EXPORT_SYMBOL(snd_seq_kernel_client_enqueue); /* @@ -2283,7 +2279,6 @@ int snd_seq_kernel_client_enqueue_blocking(int client, struct snd_seq_event * ev { return kernel_client_enqueue(client, ev, file, 1, atomic, hop); } - EXPORT_SYMBOL(snd_seq_kernel_client_enqueue_blocking); /* @@ -2321,7 +2316,6 @@ int snd_seq_kernel_client_dispatch(int client, struct snd_seq_event * ev, snd_seq_client_unlock(cptr); return result; } - EXPORT_SYMBOL(snd_seq_kernel_client_dispatch); /** @@ -2354,7 +2348,6 @@ int snd_seq_kernel_client_ctl(int clientid, unsigned int cmd, void *arg) cmd, _IOC_TYPE(cmd), _IOC_NR(cmd)); return -ENOTTY; } - EXPORT_SYMBOL(snd_seq_kernel_client_ctl); /* exported (for OSS emulator) */ @@ -2372,7 +2365,6 @@ int snd_seq_kernel_client_write_poll(int clientid, struct file *file, poll_table return 1; return 0; } - EXPORT_SYMBOL(snd_seq_kernel_client_write_poll); /*---------------------------------------------------------------------------*/ diff --git a/sound/core/seq/seq_fifo.c b/sound/core/seq/seq_fifo.c index 01c4cfe30c9f..a8c2822e0198 100644 --- a/sound/core/seq/seq_fifo.c +++ b/sound/core/seq/seq_fifo.c @@ -179,7 +179,7 @@ int snd_seq_fifo_cell_out(struct snd_seq_fifo *f, { struct snd_seq_event_cell *cell; unsigned long flags; - wait_queue_t wait; + wait_queue_entry_t wait; if (snd_BUG_ON(!f)) return -EINVAL; diff --git a/sound/core/seq/seq_lock.c b/sound/core/seq/seq_lock.c index 12ba83367b1b..0ff7926a5a69 100644 --- a/sound/core/seq/seq_lock.c +++ b/sound/core/seq/seq_lock.c @@ -40,7 +40,6 @@ void snd_use_lock_sync_helper(snd_use_lock_t *lockp, const char *file, int line) schedule_timeout_uninterruptible(1); } } - EXPORT_SYMBOL(snd_use_lock_sync_helper); #endif diff --git a/sound/core/seq/seq_memory.c b/sound/core/seq/seq_memory.c index d4c61ec9be13..f763682584a8 100644 --- a/sound/core/seq/seq_memory.c +++ b/sound/core/seq/seq_memory.c @@ -118,7 +118,6 @@ int snd_seq_dump_var_event(const struct snd_seq_event *event, } return 0; } - EXPORT_SYMBOL(snd_seq_dump_var_event); @@ -169,7 +168,6 @@ int snd_seq_expand_var_event(const struct snd_seq_event *event, int count, char &buf); return err < 0 ? err : newlen; } - EXPORT_SYMBOL(snd_seq_expand_var_event); /* @@ -227,7 +225,7 @@ static int snd_seq_cell_alloc(struct snd_seq_pool *pool, struct snd_seq_event_cell *cell; unsigned long flags; int err = -EAGAIN; - wait_queue_t wait; + wait_queue_entry_t wait; if (pool == NULL) return -EINVAL; diff --git a/sound/core/seq/seq_midi_emul.c b/sound/core/seq/seq_midi_emul.c index 7ba937399ac7..9e2912e3e80f 100644 --- a/sound/core/seq/seq_midi_emul.c +++ b/sound/core/seq/seq_midi_emul.c @@ -236,6 +236,7 @@ snd_midi_process_event(struct snd_midi_op *ops, break; } } +EXPORT_SYMBOL(snd_midi_process_event); /* @@ -409,6 +410,7 @@ snd_midi_channel_set_clear(struct snd_midi_channel_set *chset) chan->drum_channel = 0; } } +EXPORT_SYMBOL(snd_midi_channel_set_clear); /* * Process a rpn message. @@ -701,6 +703,7 @@ struct snd_midi_channel_set *snd_midi_channel_alloc_set(int n) } return chset; } +EXPORT_SYMBOL(snd_midi_channel_alloc_set); /* * Reset the midi controllers on a particular channel to default values. @@ -724,6 +727,7 @@ void snd_midi_channel_free_set(struct snd_midi_channel_set *chset) kfree(chset->channels); kfree(chset); } +EXPORT_SYMBOL(snd_midi_channel_free_set); static int __init alsa_seq_midi_emul_init(void) { @@ -736,8 +740,3 @@ static void __exit alsa_seq_midi_emul_exit(void) module_init(alsa_seq_midi_emul_init) module_exit(alsa_seq_midi_emul_exit) - -EXPORT_SYMBOL(snd_midi_process_event); -EXPORT_SYMBOL(snd_midi_channel_set_clear); -EXPORT_SYMBOL(snd_midi_channel_alloc_set); -EXPORT_SYMBOL(snd_midi_channel_free_set); diff --git a/sound/core/seq/seq_midi_event.c b/sound/core/seq/seq_midi_event.c index 37db7ba492a6..90bbbdbeba03 100644 --- a/sound/core/seq/seq_midi_event.c +++ b/sound/core/seq/seq_midi_event.c @@ -134,6 +134,7 @@ int snd_midi_event_new(int bufsize, struct snd_midi_event **rdev) *rdev = dev; return 0; } +EXPORT_SYMBOL(snd_midi_event_new); void snd_midi_event_free(struct snd_midi_event *dev) { @@ -142,6 +143,7 @@ void snd_midi_event_free(struct snd_midi_event *dev) kfree(dev); } } +EXPORT_SYMBOL(snd_midi_event_free); /* * initialize record @@ -161,6 +163,7 @@ void snd_midi_event_reset_encode(struct snd_midi_event *dev) reset_encode(dev); spin_unlock_irqrestore(&dev->lock, flags); } +EXPORT_SYMBOL(snd_midi_event_reset_encode); void snd_midi_event_reset_decode(struct snd_midi_event *dev) { @@ -170,6 +173,7 @@ void snd_midi_event_reset_decode(struct snd_midi_event *dev) dev->lastcmd = 0xff; spin_unlock_irqrestore(&dev->lock, flags); } +EXPORT_SYMBOL(snd_midi_event_reset_decode); #if 0 void snd_midi_event_init(struct snd_midi_event *dev) @@ -183,6 +187,7 @@ void snd_midi_event_no_status(struct snd_midi_event *dev, int on) { dev->nostat = on ? 1 : 0; } +EXPORT_SYMBOL(snd_midi_event_no_status); /* * resize buffer @@ -232,6 +237,7 @@ long snd_midi_event_encode(struct snd_midi_event *dev, unsigned char *buf, long return result; } +EXPORT_SYMBOL(snd_midi_event_encode); /* * read one byte and encode to sequencer event: @@ -307,6 +313,7 @@ int snd_midi_event_encode_byte(struct snd_midi_event *dev, int c, spin_unlock_irqrestore(&dev->lock, flags); return rc; } +EXPORT_SYMBOL(snd_midi_event_encode_byte); /* encode note event */ static void note_event(struct snd_midi_event *dev, struct snd_seq_event *ev) @@ -408,6 +415,7 @@ long snd_midi_event_decode(struct snd_midi_event *dev, unsigned char *buf, long return qlen; } } +EXPORT_SYMBOL(snd_midi_event_decode); /* decode note event */ @@ -524,19 +532,6 @@ static int extra_decode_xrpn(struct snd_midi_event *dev, unsigned char *buf, return idx; } -/* - * exports - */ - -EXPORT_SYMBOL(snd_midi_event_new); -EXPORT_SYMBOL(snd_midi_event_free); -EXPORT_SYMBOL(snd_midi_event_reset_encode); -EXPORT_SYMBOL(snd_midi_event_reset_decode); -EXPORT_SYMBOL(snd_midi_event_no_status); -EXPORT_SYMBOL(snd_midi_event_encode); -EXPORT_SYMBOL(snd_midi_event_encode_byte); -EXPORT_SYMBOL(snd_midi_event_decode); - static int __init alsa_seq_midi_event_init(void) { return 0; diff --git a/sound/core/seq/seq_ports.c b/sound/core/seq/seq_ports.c index fe686ee41c6d..0a7020c82bfc 100644 --- a/sound/core/seq/seq_ports.c +++ b/sound/core/seq/seq_ports.c @@ -685,7 +685,6 @@ int snd_seq_event_port_attach(int client, return ret; } - EXPORT_SYMBOL(snd_seq_event_port_attach); /* @@ -706,5 +705,4 @@ int snd_seq_event_port_detach(int client, int port) return err; } - EXPORT_SYMBOL(snd_seq_event_port_detach); diff --git a/sound/core/seq/seq_virmidi.c b/sound/core/seq/seq_virmidi.c index 52f31f1498f9..8d93a4021c78 100644 --- a/sound/core/seq/seq_virmidi.c +++ b/sound/core/seq/seq_virmidi.c @@ -534,6 +534,7 @@ int snd_virmidi_new(struct snd_card *card, int device, struct snd_rawmidi **rrmi *rrmidi = rmidi; return 0; } +EXPORT_SYMBOL(snd_virmidi_new); /* * ENTRY functions @@ -550,5 +551,3 @@ static void __exit alsa_virmidi_exit(void) module_init(alsa_virmidi_init) module_exit(alsa_virmidi_exit) - -EXPORT_SYMBOL(snd_virmidi_new); diff --git a/sound/core/seq/seq_device.c b/sound/core/seq_device.c index c4acf17e9f5e..c4acf17e9f5e 100644 --- a/sound/core/seq/seq_device.c +++ b/sound/core/seq_device.c diff --git a/sound/core/sound.c b/sound/core/sound.c index 175f9e4e01c8..b30f027eb0fe 100644 --- a/sound/core/sound.c +++ b/sound/core/sound.c @@ -74,7 +74,6 @@ void snd_request_card(int card) return; request_module("snd-card-%i", card); } - EXPORT_SYMBOL(snd_request_card); static void snd_request_other(int minor) @@ -124,7 +123,6 @@ void *snd_lookup_minor_data(unsigned int minor, int type) mutex_unlock(&sound_mutex); return private_data; } - EXPORT_SYMBOL(snd_lookup_minor_data); #ifdef CONFIG_MODULES diff --git a/sound/core/sound_oss.c b/sound/core/sound_oss.c index 0ca9d72b2273..0a5c66229a22 100644 --- a/sound/core/sound_oss.c +++ b/sound/core/sound_oss.c @@ -55,7 +55,6 @@ void *snd_lookup_oss_minor_data(unsigned int minor, int type) mutex_unlock(&sound_oss_mutex); return private_data; } - EXPORT_SYMBOL(snd_lookup_oss_minor_data); static int snd_oss_kernel_minor(int type, struct snd_card *card, int dev) @@ -159,7 +158,6 @@ int snd_register_oss_device(int type, struct snd_card *card, int dev, kfree(preg); return -EBUSY; } - EXPORT_SYMBOL(snd_register_oss_device); int snd_unregister_oss_device(int type, struct snd_card *card, int dev) @@ -200,7 +198,6 @@ int snd_unregister_oss_device(int type, struct snd_card *card, int dev) kfree(mptr); return 0; } - EXPORT_SYMBOL(snd_unregister_oss_device); /* diff --git a/sound/core/timer.c b/sound/core/timer.c index 2f836ca09860..a9b9a277e00c 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -319,6 +319,7 @@ int snd_timer_open(struct snd_timer_instance **ti, *ti = timeri; return 0; } +EXPORT_SYMBOL(snd_timer_open); /* * close a timer instance @@ -384,6 +385,7 @@ int snd_timer_close(struct snd_timer_instance *timeri) mutex_unlock(®ister_mutex); return 0; } +EXPORT_SYMBOL(snd_timer_close); unsigned long snd_timer_resolution(struct snd_timer_instance *timeri) { @@ -398,6 +400,7 @@ unsigned long snd_timer_resolution(struct snd_timer_instance *timeri) } return 0; } +EXPORT_SYMBOL(snd_timer_resolution); static void snd_timer_notify1(struct snd_timer_instance *ti, int event) { @@ -589,6 +592,7 @@ int snd_timer_start(struct snd_timer_instance *timeri, unsigned int ticks) else return snd_timer_start1(timeri, true, ticks); } +EXPORT_SYMBOL(snd_timer_start); /* * stop the timer instance. @@ -602,6 +606,7 @@ int snd_timer_stop(struct snd_timer_instance *timeri) else return snd_timer_stop1(timeri, true); } +EXPORT_SYMBOL(snd_timer_stop); /* * start again.. the tick is kept. @@ -617,6 +622,7 @@ int snd_timer_continue(struct snd_timer_instance *timeri) else return snd_timer_start1(timeri, false, 0); } +EXPORT_SYMBOL(snd_timer_continue); /* * pause.. remember the ticks left @@ -628,6 +634,7 @@ int snd_timer_pause(struct snd_timer_instance * timeri) else return snd_timer_stop1(timeri, false); } +EXPORT_SYMBOL(snd_timer_pause); /* * reschedule the timer @@ -809,6 +816,7 @@ void snd_timer_interrupt(struct snd_timer * timer, unsigned long ticks_left) if (use_tasklet) tasklet_schedule(&timer->task_queue); } +EXPORT_SYMBOL(snd_timer_interrupt); /* @@ -859,6 +867,7 @@ int snd_timer_new(struct snd_card *card, char *id, struct snd_timer_id *tid, *rtimer = timer; return 0; } +EXPORT_SYMBOL(snd_timer_new); static int snd_timer_free(struct snd_timer *timer) { @@ -978,6 +987,7 @@ void snd_timer_notify(struct snd_timer *timer, int event, struct timespec *tstam } spin_unlock_irqrestore(&timer->lock, flags); } +EXPORT_SYMBOL(snd_timer_notify); /* * exported functions for global timers @@ -993,11 +1003,13 @@ int snd_timer_global_new(char *id, int device, struct snd_timer **rtimer) tid.subdevice = 0; return snd_timer_new(NULL, id, &tid, rtimer); } +EXPORT_SYMBOL(snd_timer_global_new); int snd_timer_global_free(struct snd_timer *timer) { return snd_timer_free(timer); } +EXPORT_SYMBOL(snd_timer_global_free); int snd_timer_global_register(struct snd_timer *timer) { @@ -1007,6 +1019,7 @@ int snd_timer_global_register(struct snd_timer *timer) dev.device_data = timer; return snd_timer_dev_register(&dev); } +EXPORT_SYMBOL(snd_timer_global_register); /* * System timer @@ -1327,6 +1340,33 @@ static void snd_timer_user_tinterrupt(struct snd_timer_instance *timeri, wake_up(&tu->qchange_sleep); } +static int realloc_user_queue(struct snd_timer_user *tu, int size) +{ + struct snd_timer_read *queue = NULL; + struct snd_timer_tread *tqueue = NULL; + + if (tu->tread) { + tqueue = kcalloc(size, sizeof(*tqueue), GFP_KERNEL); + if (!tqueue) + return -ENOMEM; + } else { + queue = kcalloc(size, sizeof(*queue), GFP_KERNEL); + if (!queue) + return -ENOMEM; + } + + spin_lock_irq(&tu->qlock); + kfree(tu->queue); + kfree(tu->tqueue); + tu->queue_size = size; + tu->queue = queue; + tu->tqueue = tqueue; + tu->qhead = tu->qtail = tu->qused = 0; + spin_unlock_irq(&tu->qlock); + + return 0; +} + static int snd_timer_user_open(struct inode *inode, struct file *file) { struct snd_timer_user *tu; @@ -1343,10 +1383,7 @@ static int snd_timer_user_open(struct inode *inode, struct file *file) init_waitqueue_head(&tu->qchange_sleep); mutex_init(&tu->ioctl_lock); tu->ticks = 1; - tu->queue_size = 128; - tu->queue = kmalloc(tu->queue_size * sizeof(struct snd_timer_read), - GFP_KERNEL); - if (tu->queue == NULL) { + if (realloc_user_queue(tu, 128) < 0) { kfree(tu); return -ENOMEM; } @@ -1618,33 +1655,12 @@ static int snd_timer_user_tselect(struct file *file, if (err < 0) goto __err; - kfree(tu->queue); - tu->queue = NULL; - kfree(tu->tqueue); - tu->tqueue = NULL; - if (tu->tread) { - tu->tqueue = kmalloc(tu->queue_size * sizeof(struct snd_timer_tread), - GFP_KERNEL); - if (tu->tqueue == NULL) - err = -ENOMEM; - } else { - tu->queue = kmalloc(tu->queue_size * sizeof(struct snd_timer_read), - GFP_KERNEL); - if (tu->queue == NULL) - err = -ENOMEM; - } - - if (err < 0) { - snd_timer_close(tu->timeri); - tu->timeri = NULL; - } else { - tu->timeri->flags |= SNDRV_TIMER_IFLG_FAST; - tu->timeri->callback = tu->tread + tu->timeri->flags |= SNDRV_TIMER_IFLG_FAST; + tu->timeri->callback = tu->tread ? snd_timer_user_tinterrupt : snd_timer_user_interrupt; - tu->timeri->ccallback = snd_timer_user_ccallback; - tu->timeri->callback_data = (void *)tu; - tu->timeri->disconnect = snd_timer_user_disconnect; - } + tu->timeri->ccallback = snd_timer_user_ccallback; + tu->timeri->callback_data = (void *)tu; + tu->timeri->disconnect = snd_timer_user_disconnect; __err: return err; @@ -1686,8 +1702,6 @@ static int snd_timer_user_params(struct file *file, struct snd_timer_user *tu; struct snd_timer_params params; struct snd_timer *t; - struct snd_timer_read *tr; - struct snd_timer_tread *ttr; int err; tu = file->private_data; @@ -1750,24 +1764,11 @@ static int snd_timer_user_params(struct file *file, spin_unlock_irq(&t->lock); if (params.queue_size > 0 && (unsigned int)tu->queue_size != params.queue_size) { - if (tu->tread) { - ttr = kmalloc(params.queue_size * sizeof(*ttr), - GFP_KERNEL); - if (ttr) { - kfree(tu->tqueue); - tu->queue_size = params.queue_size; - tu->tqueue = ttr; - } - } else { - tr = kmalloc(params.queue_size * sizeof(*tr), - GFP_KERNEL); - if (tr) { - kfree(tu->queue); - tu->queue_size = params.queue_size; - tu->queue = tr; - } - } + err = realloc_user_queue(tu, params.queue_size); + if (err < 0) + goto _end; } + spin_lock_irq(&tu->qlock); tu->qhead = tu->qtail = tu->qused = 0; if (tu->timeri->flags & SNDRV_TIMER_IFLG_EARLY_EVENT) { if (tu->tread) { @@ -1788,6 +1789,7 @@ static int snd_timer_user_params(struct file *file, } tu->filter = params.filter; tu->ticks = params.ticks; + spin_unlock_irq(&tu->qlock); err = 0; _end: if (copy_to_user(_params, ¶ms, sizeof(params))) @@ -1890,13 +1892,19 @@ static long __snd_timer_user_ioctl(struct file *file, unsigned int cmd, return snd_timer_user_next_device(argp); case SNDRV_TIMER_IOCTL_TREAD: { - int xarg; + int xarg, old_tread; if (tu->timeri) /* too late */ return -EBUSY; if (get_user(xarg, p)) return -EFAULT; + old_tread = tu->tread; tu->tread = xarg ? 1 : 0; + if (tu->tread != old_tread && + realloc_user_queue(tu, tu->queue_size) < 0) { + tu->tread = old_tread; + return -ENOMEM; + } return 0; } case SNDRV_TIMER_IOCTL_GINFO: @@ -1959,10 +1967,11 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer, tu = file->private_data; unit = tu->tread ? sizeof(struct snd_timer_tread) : sizeof(struct snd_timer_read); + mutex_lock(&tu->ioctl_lock); spin_lock_irq(&tu->qlock); while ((long)count - result >= unit) { while (!tu->qused) { - wait_queue_t wait; + wait_queue_entry_t wait; if ((file->f_flags & O_NONBLOCK) != 0 || result > 0) { err = -EAGAIN; @@ -1974,7 +1983,9 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer, add_wait_queue(&tu->qchange_sleep, &wait); spin_unlock_irq(&tu->qlock); + mutex_unlock(&tu->ioctl_lock); schedule(); + mutex_lock(&tu->ioctl_lock); spin_lock_irq(&tu->qlock); remove_wait_queue(&tu->qchange_sleep, &wait); @@ -1994,7 +2005,6 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer, tu->qused--; spin_unlock_irq(&tu->qlock); - mutex_lock(&tu->ioctl_lock); if (tu->tread) { if (copy_to_user(buffer, &tu->tqueue[qhead], sizeof(struct snd_timer_tread))) @@ -2004,7 +2014,6 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer, sizeof(struct snd_timer_read))) err = -EFAULT; } - mutex_unlock(&tu->ioctl_lock); spin_lock_irq(&tu->qlock); if (err < 0) @@ -2014,6 +2023,7 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer, } _error: spin_unlock_irq(&tu->qlock); + mutex_unlock(&tu->ioctl_lock); return result > 0 ? result : err; } @@ -2027,10 +2037,12 @@ static unsigned int snd_timer_user_poll(struct file *file, poll_table * wait) poll_wait(file, &tu->qchange_sleep, wait); mask = 0; + spin_lock_irq(&tu->qlock); if (tu->qused) mask |= POLLIN | POLLRDNORM; if (tu->disconnected) mask |= POLLERR; + spin_unlock_irq(&tu->qlock); return mask; } @@ -2114,17 +2126,3 @@ static void __exit alsa_timer_exit(void) module_init(alsa_timer_init) module_exit(alsa_timer_exit) - -EXPORT_SYMBOL(snd_timer_open); -EXPORT_SYMBOL(snd_timer_close); -EXPORT_SYMBOL(snd_timer_resolution); -EXPORT_SYMBOL(snd_timer_start); -EXPORT_SYMBOL(snd_timer_stop); -EXPORT_SYMBOL(snd_timer_continue); -EXPORT_SYMBOL(snd_timer_pause); -EXPORT_SYMBOL(snd_timer_new); -EXPORT_SYMBOL(snd_timer_notify); -EXPORT_SYMBOL(snd_timer_global_new); -EXPORT_SYMBOL(snd_timer_global_free); -EXPORT_SYMBOL(snd_timer_global_register); -EXPORT_SYMBOL(snd_timer_interrupt); |