cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pcm_local.h (3050B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * pcm_local.h - a local header file for snd-pcm module.
      4 *
      5 * Copyright (c) Takashi Sakamoto <o-takashi@sakamocchi.jp>
      6 */
      7
      8#ifndef __SOUND_CORE_PCM_LOCAL_H
      9#define __SOUND_CORE_PCM_LOCAL_H
     10
     11extern const struct snd_pcm_hw_constraint_list snd_pcm_known_rates;
     12
     13void snd_interval_mul(const struct snd_interval *a,
     14		      const struct snd_interval *b, struct snd_interval *c);
     15void snd_interval_div(const struct snd_interval *a,
     16		      const struct snd_interval *b, struct snd_interval *c);
     17void snd_interval_muldivk(const struct snd_interval *a,
     18			  const struct snd_interval *b,
     19			  unsigned int k, struct snd_interval *c);
     20void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k,
     21			  const struct snd_interval *b, struct snd_interval *c);
     22
     23int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime,
     24			       snd_pcm_hw_param_t var, u_int32_t mask);
     25
     26int pcm_lib_apply_appl_ptr(struct snd_pcm_substream *substream,
     27			   snd_pcm_uframes_t appl_ptr);
     28int snd_pcm_update_state(struct snd_pcm_substream *substream,
     29			 struct snd_pcm_runtime *runtime);
     30int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream);
     31
     32void snd_pcm_playback_silence(struct snd_pcm_substream *substream,
     33			      snd_pcm_uframes_t new_hw_ptr);
     34
     35static inline snd_pcm_uframes_t
     36snd_pcm_avail(struct snd_pcm_substream *substream)
     37{
     38	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
     39		return snd_pcm_playback_avail(substream->runtime);
     40	else
     41		return snd_pcm_capture_avail(substream->runtime);
     42}
     43
     44static inline snd_pcm_uframes_t
     45snd_pcm_hw_avail(struct snd_pcm_substream *substream)
     46{
     47	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
     48		return snd_pcm_playback_hw_avail(substream->runtime);
     49	else
     50		return snd_pcm_capture_hw_avail(substream->runtime);
     51}
     52
     53#ifdef CONFIG_SND_PCM_TIMER
     54void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream);
     55void snd_pcm_timer_init(struct snd_pcm_substream *substream);
     56void snd_pcm_timer_done(struct snd_pcm_substream *substream);
     57#else
     58static inline void
     59snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream) {}
     60static inline void snd_pcm_timer_init(struct snd_pcm_substream *substream) {}
     61static inline void snd_pcm_timer_done(struct snd_pcm_substream *substream) {}
     62#endif
     63
     64void __snd_pcm_xrun(struct snd_pcm_substream *substream);
     65void snd_pcm_group_init(struct snd_pcm_group *group);
     66void snd_pcm_sync_stop(struct snd_pcm_substream *substream, bool sync_irq);
     67
     68#define PCM_RUNTIME_CHECK(sub) snd_BUG_ON(!(sub) || !(sub)->runtime)
     69
     70/* loop over all PCM substreams */
     71#define for_each_pcm_substream(pcm, str, subs) \
     72	for ((str) = 0; (str) < 2; (str)++) \
     73		for ((subs) = (pcm)->streams[str].substream; (subs); \
     74		     (subs) = (subs)->next)
     75
     76static inline void snd_pcm_dma_buffer_sync(struct snd_pcm_substream *substream,
     77					   enum snd_dma_sync_mode mode)
     78{
     79	if (substream->runtime->info & SNDRV_PCM_INFO_EXPLICIT_SYNC)
     80		snd_dma_buffer_sync(snd_pcm_get_dma_buf(substream), mode);
     81}
     82
     83#endif	/* __SOUND_CORE_PCM_LOCAL_H */