diff options
Diffstat (limited to 'sound/core/pcm_native.c')
| -rw-r--r-- | sound/core/pcm_native.c | 437 |
1 files changed, 337 insertions, 100 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index d083225344a0..336406bcb59e 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -4,6 +4,7 @@ * Copyright (c) by Jaroslav Kysela <perex@perex.cz> */ +#include <linux/compat.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/file.h> @@ -550,7 +551,8 @@ static int period_to_usecs(struct snd_pcm_runtime *runtime) return usecs; } -static void snd_pcm_set_state(struct snd_pcm_substream *substream, int state) +static void snd_pcm_set_state(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { snd_pcm_stream_lock_irq(substream); if (substream->runtime->status->state != SNDRV_PCM_STATE_DISCONNECTED) @@ -785,10 +787,22 @@ end: return err; } +static int do_hw_free(struct snd_pcm_substream *substream) +{ + int result = 0; + + snd_pcm_sync_stop(substream); + if (substream->ops->hw_free) + result = substream->ops->hw_free(substream); + if (substream->managed_buffer_alloc) + snd_pcm_lib_free_pages(substream); + return result; +} + static int snd_pcm_hw_free(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime; - int result = 0; + int result; if (PCM_RUNTIME_CHECK(substream)) return -ENXIO; @@ -805,11 +819,7 @@ static int snd_pcm_hw_free(struct snd_pcm_substream *substream) snd_pcm_stream_unlock_irq(substream); if (atomic_read(&substream->mmap_count)) return -EBADFD; - snd_pcm_sync_stop(substream); - if (substream->ops->hw_free) - result = substream->ops->hw_free(substream); - if (substream->managed_buffer_alloc) - snd_pcm_lib_free_pages(substream); + result = do_hw_free(substream); snd_pcm_set_state(substream, SNDRV_PCM_STATE_OPEN); pm_qos_remove_request(&substream->latency_pm_qos_req); return result; @@ -895,8 +905,8 @@ snd_pcm_calc_delay(struct snd_pcm_substream *substream) return delay + substream->runtime->delay; } -int snd_pcm_status(struct snd_pcm_substream *substream, - struct snd_pcm_status *status) +int snd_pcm_status64(struct snd_pcm_substream *substream, + struct snd_pcm_status64 *status) { struct snd_pcm_runtime *runtime = substream->runtime; @@ -922,14 +932,22 @@ int snd_pcm_status(struct snd_pcm_substream *substream, status->suspended_state = runtime->status->suspended_state; if (status->state == SNDRV_PCM_STATE_OPEN) goto _end; - status->trigger_tstamp = runtime->trigger_tstamp; + status->trigger_tstamp_sec = runtime->trigger_tstamp.tv_sec; + status->trigger_tstamp_nsec = runtime->trigger_tstamp.tv_nsec; if (snd_pcm_running(substream)) { snd_pcm_update_hw_ptr(substream); if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) { - status->tstamp = runtime->status->tstamp; - status->driver_tstamp = runtime->driver_tstamp; - status->audio_tstamp = - runtime->status->audio_tstamp; + status->tstamp_sec = runtime->status->tstamp.tv_sec; + status->tstamp_nsec = + runtime->status->tstamp.tv_nsec; + status->driver_tstamp_sec = + runtime->driver_tstamp.tv_sec; + status->driver_tstamp_nsec = + runtime->driver_tstamp.tv_nsec; + status->audio_tstamp_sec = + runtime->status->audio_tstamp.tv_sec; + status->audio_tstamp_nsec = + runtime->status->audio_tstamp.tv_nsec; if (runtime->audio_tstamp_report.valid == 1) /* backwards compatibility, no report provided in COMPAT mode */ snd_pcm_pack_audio_tstamp_report(&status->audio_tstamp_data, @@ -940,8 +958,13 @@ int snd_pcm_status(struct snd_pcm_substream *substream, } } else { /* get tstamp only in fallback mode and only if enabled */ - if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) - snd_pcm_gettime(runtime, &status->tstamp); + if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) { + struct timespec64 tstamp; + + snd_pcm_gettime(runtime, &tstamp); + status->tstamp_sec = tstamp.tv_sec; + status->tstamp_nsec = tstamp.tv_nsec; + } } _tstamp_end: status->appl_ptr = runtime->control->appl_ptr; @@ -958,11 +981,11 @@ int snd_pcm_status(struct snd_pcm_substream *substream, return 0; } -static int snd_pcm_status_user(struct snd_pcm_substream *substream, - struct snd_pcm_status __user * _status, - bool ext) +static int snd_pcm_status_user64(struct snd_pcm_substream *substream, + struct snd_pcm_status64 __user * _status, + bool ext) { - struct snd_pcm_status status; + struct snd_pcm_status64 status; int res; memset(&status, 0, sizeof(status)); @@ -974,7 +997,7 @@ static int snd_pcm_status_user(struct snd_pcm_substream *substream, if (ext && get_user(status.audio_tstamp_data, (u32 __user *)(&_status->audio_tstamp_data))) return -EFAULT; - res = snd_pcm_status(substream, &status); + res = snd_pcm_status64(substream, &status); if (res < 0) return res; if (copy_to_user(_status, &status, sizeof(status))) @@ -982,6 +1005,55 @@ static int snd_pcm_status_user(struct snd_pcm_substream *substream, return 0; } +static int snd_pcm_status_user32(struct snd_pcm_substream *substream, + struct snd_pcm_status32 __user * _status, + bool ext) +{ + struct snd_pcm_status64 status64; + struct snd_pcm_status32 status32; + int res; + + memset(&status64, 0, sizeof(status64)); + memset(&status32, 0, sizeof(status32)); + /* + * with extension, parameters are read/write, + * get audio_tstamp_data from user, + * ignore rest of status structure + */ + if (ext && get_user(status64.audio_tstamp_data, + (u32 __user *)(&_status->audio_tstamp_data))) + return -EFAULT; + res = snd_pcm_status64(substream, &status64); + if (res < 0) + return res; + + status32 = (struct snd_pcm_status32) { + .state = status64.state, + .trigger_tstamp_sec = status64.trigger_tstamp_sec, + .trigger_tstamp_nsec = status64.trigger_tstamp_nsec, + .tstamp_sec = status64.tstamp_sec, + .tstamp_nsec = status64.tstamp_nsec, + .appl_ptr = status64.appl_ptr, + .hw_ptr = status64.hw_ptr, + .delay = status64.delay, + .avail = status64.avail, + .avail_max = status64.avail_max, + .overrange = status64.overrange, + .suspended_state = status64.suspended_state, + .audio_tstamp_data = status64.audio_tstamp_data, + .audio_tstamp_sec = status64.audio_tstamp_sec, + .audio_tstamp_nsec = status64.audio_tstamp_nsec, + .driver_tstamp_sec = status64.audio_tstamp_sec, + .driver_tstamp_nsec = status64.audio_tstamp_nsec, + .audio_tstamp_accuracy = status64.audio_tstamp_accuracy, + }; + + if (copy_to_user(_status, &status32, sizeof(status32))) + return -EFAULT; + + return 0; +} + static int snd_pcm_channel_info(struct snd_pcm_substream *substream, struct snd_pcm_channel_info * info) { @@ -1034,11 +1106,17 @@ static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) runtime->trigger_master = NULL; } +#define ACTION_ARG_IGNORE (__force snd_pcm_state_t)0 + struct action_ops { - int (*pre_action)(struct snd_pcm_substream *substream, int state); - int (*do_action)(struct snd_pcm_substream *substream, int state); - void (*undo_action)(struct snd_pcm_substream *substream, int state); - void (*post_action)(struct snd_pcm_substream *substream, int state); + int (*pre_action)(struct snd_pcm_substream *substream, + snd_pcm_state_t state); + int (*do_action)(struct snd_pcm_substream *substream, + snd_pcm_state_t state); + void (*undo_action)(struct snd_pcm_substream *substream, + snd_pcm_state_t state); + void (*post_action)(struct snd_pcm_substream *substream, + snd_pcm_state_t state); }; /* @@ -1048,7 +1126,8 @@ struct action_ops { */ static int snd_pcm_action_group(const struct action_ops *ops, struct snd_pcm_substream *substream, - int state, int do_lock) + snd_pcm_state_t state, + bool do_lock) { struct snd_pcm_substream *s = NULL; struct snd_pcm_substream *s1; @@ -1105,7 +1184,7 @@ static int snd_pcm_action_group(const struct action_ops *ops, */ static int snd_pcm_action_single(const struct action_ops *ops, struct snd_pcm_substream *substream, - int state) + snd_pcm_state_t state) { int res; @@ -1186,14 +1265,14 @@ snd_pcm_stream_group_ref(struct snd_pcm_substream *substream) */ static int snd_pcm_action(const struct action_ops *ops, struct snd_pcm_substream *substream, - int state) + snd_pcm_state_t state) { struct snd_pcm_group *group; int res; group = snd_pcm_stream_group_ref(substream); if (group) - res = snd_pcm_action_group(ops, substream, state, 1); + res = snd_pcm_action_group(ops, substream, state, true); else res = snd_pcm_action_single(ops, substream, state); snd_pcm_group_unref(group, substream); @@ -1205,7 +1284,7 @@ static int snd_pcm_action(const struct action_ops *ops, */ static int snd_pcm_action_lock_irq(const struct action_ops *ops, struct snd_pcm_substream *substream, - int state) + snd_pcm_state_t state) { int res; @@ -1219,14 +1298,14 @@ static int snd_pcm_action_lock_irq(const struct action_ops *ops, */ static int snd_pcm_action_nonatomic(const struct action_ops *ops, struct snd_pcm_substream *substream, - int state) + snd_pcm_state_t state) { int res; /* Guarantee the group members won't change during non-atomic action */ down_read(&snd_pcm_link_rwsem); if (snd_pcm_stream_linked(substream)) - res = snd_pcm_action_group(ops, substream, state, 0); + res = snd_pcm_action_group(ops, substream, state, false); else res = snd_pcm_action_single(ops, substream, state); up_read(&snd_pcm_link_rwsem); @@ -1236,7 +1315,8 @@ static int snd_pcm_action_nonatomic(const struct action_ops *ops, /* * start callbacks */ -static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) +static int snd_pcm_pre_start(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) @@ -1249,20 +1329,23 @@ static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) return 0; } -static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) +static int snd_pcm_do_start(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { if (substream->runtime->trigger_master != substream) return 0; return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); } -static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) +static void snd_pcm_undo_start(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { if (substream->runtime->trigger_master == substream) substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); } -static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) +static void snd_pcm_post_start(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; snd_pcm_trigger_tstamp(substream); @@ -1306,7 +1389,8 @@ static int snd_pcm_start_lock_irq(struct snd_pcm_substream *substream) /* * stop callbacks */ -static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) +static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; if (runtime->status->state == SNDRV_PCM_STATE_OPEN) @@ -1315,7 +1399,8 @@ static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) return 0; } -static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) +static int snd_pcm_do_stop(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { if (substream->runtime->trigger_master == substream && snd_pcm_running(substream)) @@ -1323,7 +1408,8 @@ static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) return 0; /* unconditonally stop all substreams */ } -static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) +static void snd_pcm_post_stop(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; if (runtime->status->state != state) { @@ -1394,14 +1480,17 @@ int snd_pcm_stop_xrun(struct snd_pcm_substream *substream) EXPORT_SYMBOL_GPL(snd_pcm_stop_xrun); /* - * pause callbacks + * pause callbacks: pass boolean (to start pause or resume) as state argument */ -static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) +#define pause_pushed(state) (__force bool)(state) + +static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) return -ENOSYS; - if (push) { + if (pause_pushed(state)) { if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) return -EBADFD; } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) @@ -1410,13 +1499,14 @@ static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) return 0; } -static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) +static int snd_pcm_do_pause(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { if (substream->runtime->trigger_master != substream) return 0; /* some drivers might use hw_ptr to recover from the pause - update the hw_ptr now */ - if (push) + if (pause_pushed(state)) snd_pcm_update_hw_ptr(substream); /* The jiffies check in snd_pcm_update_hw_ptr*() is done by * a delta between the current jiffies, this gives a large enough @@ -1424,23 +1514,27 @@ static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) */ substream->runtime->hw_ptr_jiffies = jiffies - HZ * 1000; return substream->ops->trigger(substream, - push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : - SNDRV_PCM_TRIGGER_PAUSE_RELEASE); + pause_pushed(state) ? + SNDRV_PCM_TRIGGER_PAUSE_PUSH : + SNDRV_PCM_TRIGGER_PAUSE_RELEASE); } -static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) +static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { if (substream->runtime->trigger_master == substream) substream->ops->trigger(substream, - push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : + pause_pushed(state) ? + SNDRV_PCM_TRIGGER_PAUSE_RELEASE : SNDRV_PCM_TRIGGER_PAUSE_PUSH); } -static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) +static void snd_pcm_post_pause(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; snd_pcm_trigger_tstamp(substream); - if (push) { + if (pause_pushed(state)) { runtime->status->state = SNDRV_PCM_STATE_PAUSED; snd_pcm_timer_notify(substream, SNDRV_TIMER_EVENT_MPAUSE); wake_up(&runtime->sleep); @@ -1461,15 +1555,24 @@ static const struct action_ops snd_pcm_action_pause = { /* * Push/release the pause for all linked streams. */ -static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) +static int snd_pcm_pause(struct snd_pcm_substream *substream, bool push) { - return snd_pcm_action(&snd_pcm_action_pause, substream, push); + return snd_pcm_action(&snd_pcm_action_pause, substream, + (__force snd_pcm_state_t)push); +} + +static int snd_pcm_pause_lock_irq(struct snd_pcm_substream *substream, + bool push) +{ + return snd_pcm_action_lock_irq(&snd_pcm_action_pause, substream, + (__force snd_pcm_state_t)push); } #ifdef CONFIG_PM -/* suspend */ +/* suspend callback: state argument ignored */ -static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) +static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; switch (runtime->status->state) { @@ -1485,7 +1588,8 @@ static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) return 0; } -static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) +static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; if (runtime->trigger_master != substream) @@ -1496,7 +1600,8 @@ static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) return 0; /* suspend unconditionally */ } -static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) +static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; snd_pcm_trigger_tstamp(substream); @@ -1527,7 +1632,8 @@ static int snd_pcm_suspend(struct snd_pcm_substream *substream) unsigned long flags; snd_pcm_stream_lock_irqsave(substream, flags); - err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); + err = snd_pcm_action(&snd_pcm_action_suspend, substream, + ACTION_ARG_IGNORE); snd_pcm_stream_unlock_irqrestore(substream, flags); return err; } @@ -1571,9 +1677,10 @@ int snd_pcm_suspend_all(struct snd_pcm *pcm) } EXPORT_SYMBOL(snd_pcm_suspend_all); -/* resume */ +/* resume callbacks: state argument ignored */ -static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) +static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) @@ -1582,7 +1689,8 @@ static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) return 0; } -static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) +static int snd_pcm_do_resume(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; if (runtime->trigger_master != substream) @@ -1595,14 +1703,16 @@ static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); } -static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) +static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { if (substream->runtime->trigger_master == substream && snd_pcm_running(substream)) substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); } -static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) +static void snd_pcm_post_resume(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; snd_pcm_trigger_tstamp(substream); @@ -1620,7 +1730,8 @@ static const struct action_ops snd_pcm_action_resume = { static int snd_pcm_resume(struct snd_pcm_substream *substream) { - return snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); + return snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, + ACTION_ARG_IGNORE); } #else @@ -1661,7 +1772,9 @@ static int snd_pcm_xrun(struct snd_pcm_substream *substream) /* * reset ioctl */ -static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) +/* reset callbacks: state argument ignored */ +static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; switch (runtime->status->state) { @@ -1675,7 +1788,8 @@ static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) } } -static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) +static int snd_pcm_do_reset(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; int err = snd_pcm_ops_ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); @@ -1689,7 +1803,8 @@ static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) return 0; } -static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) +static void snd_pcm_post_reset(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; runtime->control->appl_ptr = runtime->status->hw_ptr; @@ -1706,17 +1821,20 @@ static const struct action_ops snd_pcm_action_reset = { static int snd_pcm_reset(struct snd_pcm_substream *substream) { - return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); + return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, + ACTION_ARG_IGNORE); } /* * prepare ioctl */ -/* we use the second argument for updating f_flags */ +/* pass f_flags as state argument */ static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, - int f_flags) + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; + int f_flags = (__force int)state; + if (runtime->status->state == SNDRV_PCM_STATE_OPEN || runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) return -EBADFD; @@ -1726,17 +1844,19 @@ static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, return 0; } -static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) +static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { int err; snd_pcm_sync_stop(substream); err = substream->ops->prepare(substream); if (err < 0) return err; - return snd_pcm_do_reset(substream, 0); + return snd_pcm_do_reset(substream, state); } -static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) +static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; runtime->control->appl_ptr = runtime->status->hw_ptr; @@ -1769,7 +1889,7 @@ static int snd_pcm_prepare(struct snd_pcm_substream *substream, snd_pcm_stream_lock_irq(substream); switch (substream->runtime->status->state) { case SNDRV_PCM_STATE_PAUSED: - snd_pcm_pause(substream, 0); + snd_pcm_pause(substream, false); /* fallthru */ case SNDRV_PCM_STATE_SUSPENDED: snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); @@ -1778,14 +1898,17 @@ static int snd_pcm_prepare(struct snd_pcm_substream *substream, snd_pcm_stream_unlock_irq(substream); return snd_pcm_action_nonatomic(&snd_pcm_action_prepare, - substream, f_flags); + substream, + (__force snd_pcm_state_t)f_flags); } /* * drain ioctl */ -static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) +/* drain init callbacks: state argument ignored */ +static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; switch (runtime->status->state) { @@ -1798,7 +1921,8 @@ static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state return 0; } -static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) +static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { struct snd_pcm_runtime *runtime = substream->runtime; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { @@ -1824,7 +1948,9 @@ static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) } else { /* stop running stream */ if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { - int new_state = snd_pcm_capture_avail(runtime) > 0 ? + snd_pcm_state_t new_state; + + new_state = snd_pcm_capture_avail(runtime) > 0 ? SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; snd_pcm_do_stop(substream, new_state); snd_pcm_post_stop(substream, new_state); @@ -1840,7 +1966,8 @@ static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) return 0; } -static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) +static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, + snd_pcm_state_t state) { } @@ -1883,10 +2010,11 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream, snd_pcm_stream_lock_irq(substream); /* resume pause */ if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) - snd_pcm_pause(substream, 0); + snd_pcm_pause(substream, false); /* pre-start/stop - all running streams are changed to DRAINING state */ - result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); + result = snd_pcm_action(&snd_pcm_action_drain_init, substream, + ACTION_ARG_IGNORE); if (result < 0) goto unlock; /* in non-blocking, we don't wait in ioctl but let caller poll */ @@ -1987,7 +2115,7 @@ static int snd_pcm_drop(struct snd_pcm_substream *substream) snd_pcm_stream_lock_irq(substream); /* resume pause */ if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) - snd_pcm_pause(substream, 0); + snd_pcm_pause(substream, false); snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ @@ -2245,7 +2373,7 @@ static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, return snd_interval_refine(hw_param_interval(params, rule->var), &t); } -int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) +static int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; @@ -2369,7 +2497,7 @@ int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) return 0; } -int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) +static int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct snd_pcm_hardware *hw = &runtime->hw; @@ -2466,9 +2594,7 @@ void snd_pcm_release_substream(struct snd_pcm_substream *substream) snd_pcm_drop(substream); if (substream->hw_opened) { - if (substream->ops->hw_free && - substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) - substream->ops->hw_free(substream); + do_hw_free(substream); substream->ops->close(substream); substream->hw_opened = 0; } @@ -2830,6 +2956,107 @@ static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, return 0; } +struct snd_pcm_mmap_status32 { + snd_pcm_state_t state; + s32 pad1; + u32 hw_ptr; + s32 tstamp_sec; + s32 tstamp_nsec; + snd_pcm_state_t suspended_state; + s32 audio_tstamp_sec; + s32 audio_tstamp_nsec; +} __attribute__((packed)); + +struct snd_pcm_mmap_control32 { + u32 appl_ptr; + u32 avail_min; +}; + +struct snd_pcm_sync_ptr32 { + u32 flags; + union { + struct snd_pcm_mmap_status32 status; + unsigned char reserved[64]; + } s; + union { + struct snd_pcm_mmap_control32 control; + unsigned char reserved[64]; + } c; +} __attribute__((packed)); + +/* recalcuate the boundary within 32bit */ +static snd_pcm_uframes_t recalculate_boundary(struct snd_pcm_runtime *runtime) +{ + snd_pcm_uframes_t boundary; + + if (! runtime->buffer_size) + return 0; + boundary = runtime->buffer_size; + while (boundary * 2 <= 0x7fffffffUL - runtime->buffer_size) + boundary *= 2; + return boundary; +} + +static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream, + struct snd_pcm_sync_ptr32 __user *src) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + volatile struct snd_pcm_mmap_status *status; + volatile struct snd_pcm_mmap_control *control; + u32 sflags; + struct snd_pcm_mmap_control scontrol; + struct snd_pcm_mmap_status sstatus; + snd_pcm_uframes_t boundary; + int err; + + if (snd_BUG_ON(!runtime)) + return -EINVAL; + + if (get_user(sflags, &src->flags) || + get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || + get_user(scontrol.avail_min, &src->c.control.avail_min)) + return -EFAULT; + if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) { + err = snd_pcm_hwsync(substream); + if (err < 0) + return err; + } + status = runtime->status; + control = runtime->control; + boundary = recalculate_boundary(runtime); + if (! boundary) + boundary = 0x7fffffff; + snd_pcm_stream_lock_irq(substream); + /* FIXME: we should consider the boundary for the sync from app */ + if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL)) + control->appl_ptr = scontrol.appl_ptr; + else + scontrol.appl_ptr = control->appl_ptr % boundary; + if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) + control->avail_min = scontrol.avail_min; + else + scontrol.avail_min = control->avail_min; + sstatus.state = status->state; + sstatus.hw_ptr = status->hw_ptr % boundary; + sstatus.tstamp = status->tstamp; + sstatus.suspended_state = status->suspended_state; + sstatus.audio_tstamp = status->audio_tstamp; + snd_pcm_stream_unlock_irq(substream); + if (put_user(sstatus.state, &src->s.status.state) || + put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) || + put_user(sstatus.tstamp.tv_sec, &src->s.status.tstamp_sec) || + put_user(sstatus.tstamp.tv_nsec, &src->s.status.tstamp_nsec) || + put_user(sstatus.suspended_state, &src->s.status.suspended_state) || + put_user(sstatus.audio_tstamp.tv_sec, &src->s.status.audio_tstamp_sec) || + put_user(sstatus.audio_tstamp.tv_nsec, &src->s.status.audio_tstamp_nsec) || + put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || + put_user(scontrol.avail_min, &src->c.control.avail_min)) + return -EFAULT; + + return 0; +} +#define __SNDRV_PCM_IOCTL_SYNC_PTR32 _IOWR('A', 0x23, struct snd_pcm_sync_ptr32) + static int snd_pcm_tstamp(struct snd_pcm_substream *substream, int __user *_arg) { struct snd_pcm_runtime *runtime = substream->runtime; @@ -2959,10 +3186,14 @@ static int snd_pcm_common_ioctl(struct file *file, return snd_pcm_hw_free(substream); case SNDRV_PCM_IOCTL_SW_PARAMS: return snd_pcm_sw_params_user(substream, arg); - case SNDRV_PCM_IOCTL_STATUS: - return snd_pcm_status_user(substream, arg, false); - case SNDRV_PCM_IOCTL_STATUS_EXT: - return snd_pcm_status_user(substream, arg, true); + case SNDRV_PCM_IOCTL_STATUS32: + return snd_pcm_status_user32(substream, arg, false); + case SNDRV_PCM_IOCTL_STATUS_EXT32: + return snd_pcm_status_user32(substream, arg, true); + case SNDRV_PCM_IOCTL_STATUS64: + return snd_pcm_status_user64(substream, arg, false); + case SNDRV_PCM_IOCTL_STATUS_EXT64: + return snd_pcm_status_user64(substream, arg, true); case SNDRV_PCM_IOCTL_CHANNEL_INFO: return snd_pcm_channel_info_user(substream, arg); case SNDRV_PCM_IOCTL_PREPARE: @@ -2994,7 +3225,9 @@ static int snd_pcm_common_ioctl(struct file *file, return -EFAULT; return 0; } - case SNDRV_PCM_IOCTL_SYNC_PTR: + case __SNDRV_PCM_IOCTL_SYNC_PTR32: + return snd_pcm_ioctl_sync_ptr_compat(substream, arg); + case __SNDRV_PCM_IOCTL_SYNC_PTR64: return snd_pcm_sync_ptr(substream, arg); #ifdef CONFIG_SND_SUPPORT_OLD_API case SNDRV_PCM_IOCTL_HW_REFINE_OLD: @@ -3007,9 +3240,7 @@ static int snd_pcm_common_ioctl(struct file *file, case SNDRV_PCM_IOCTL_DROP: return snd_pcm_drop(substream); case SNDRV_PCM_IOCTL_PAUSE: - return snd_pcm_action_lock_irq(&snd_pcm_action_pause, - substream, - (int)(unsigned long)arg); + return snd_pcm_pause_lock_irq(substream, (unsigned long)arg); case SNDRV_PCM_IOCTL_WRITEI_FRAMES: case SNDRV_PCM_IOCTL_READI_FRAMES: return snd_pcm_xferi_frames_ioctl(substream, arg); @@ -3332,8 +3563,6 @@ static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file 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. @@ -3558,11 +3787,19 @@ 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: + case SNDRV_PCM_MMAP_OFFSET_STATUS_OLD: + if (pcm_file->no_compat_mmap || !IS_ENABLED(CONFIG_64BIT)) + return -ENXIO; + /* fallthrough */ + case SNDRV_PCM_MMAP_OFFSET_STATUS_NEW: if (!pcm_status_mmap_allowed(pcm_file)) return -ENXIO; return snd_pcm_mmap_status(substream, file, area); - case SNDRV_PCM_MMAP_OFFSET_CONTROL: + case SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD: + if (pcm_file->no_compat_mmap || !IS_ENABLED(CONFIG_64BIT)) + return -ENXIO; + /* fallthrough */ + case SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW: if (!pcm_control_mmap_allowed(pcm_file)) return -ENXIO; return snd_pcm_mmap_control(substream, file, area); @@ -3722,9 +3959,9 @@ static unsigned long snd_pcm_get_unmapped_area(struct file *file, unsigned long offset = pgoff << PAGE_SHIFT; switch (offset) { - case SNDRV_PCM_MMAP_OFFSET_STATUS: + case SNDRV_PCM_MMAP_OFFSET_STATUS_NEW: return (unsigned long)runtime->status; - case SNDRV_PCM_MMAP_OFFSET_CONTROL: + case SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW: return (unsigned long)runtime->control; default: return (unsigned long)runtime->dma_area + offset; |