typedef struct sndrv_mask snd_mask_t;
typedef struct snd_sg_buf snd_pcm_sgbuf_t;
-#define _snd_pcm_substream_chip(substream) ((substream)->private_data)
-#define snd_pcm_substream_chip(substream) snd_magic_cast1(chip_t, _snd_pcm_substream_chip(substream), return -ENXIO)
-#define _snd_pcm_chip(pcm) ((pcm)->private_data)
-#define snd_pcm_chip(pcm) snd_magic_cast1(chip_t, _snd_pcm_chip(pcm), return -ENXIO)
+#define snd_pcm_substream_chip(substream) ((substream)->private_data)
+#define snd_pcm_chip(pcm) ((pcm)->private_data)
typedef struct _snd_pcm_file snd_pcm_file_t;
typedef struct _snd_pcm_runtime snd_pcm_runtime_t;
int (*trigger)(snd_pcm_substream_t * substream, int cmd);
snd_pcm_uframes_t (*pointer)(snd_pcm_substream_t * substream);
int (*copy)(snd_pcm_substream_t *substream, int channel, snd_pcm_uframes_t pos,
- void *buf, snd_pcm_uframes_t count);
+ void __user *buf, snd_pcm_uframes_t count);
int (*silence)(snd_pcm_substream_t *substream, int channel,
snd_pcm_uframes_t pos, snd_pcm_uframes_t count);
struct page *(*page)(snd_pcm_substream_t *substream, unsigned long offset);
+ int (*mmap)(snd_pcm_substream_t *substream, struct vm_area_struct *vma);
int (*ack)(snd_pcm_substream_t *substream);
} snd_pcm_ops_t;
#define SNDRV_PCM_TRIGGER_SUSPEND 5
#define SNDRV_PCM_TRIGGER_RESUME 6
+#define SNDRV_PCM_POS_XRUN ((snd_pcm_uframes_t)-1)
+
/* If you change this don't forget to change rates[] table in pcm_native.c */
#define SNDRV_PCM_RATE_5512 (1<<0) /* 5512Hz */
#define SNDRV_PCM_RATE_8000 (1<<1) /* 8000Hz */
unsigned char *dma_area; /* DMA area */
dma_addr_t dma_addr; /* physical bus address (not accessible from main CPU) */
size_t dma_bytes; /* size of DMA area */
- void *dma_private; /* private DMA data for the memory allocator */
+
+ struct snd_dma_buffer *dma_buffer_p; /* allocated buffer */
#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
/* -- OSS things -- */
typedef struct _snd_pcm_group { /* keep linked substreams */
spinlock_t lock;
struct list_head substreams;
+ int count;
} snd_pcm_group_t;
struct _snd_pcm_substream {
char name[32]; /* substream name */
int stream; /* stream (direction) */
size_t buffer_bytes_max; /* limit ring buffer size */
- struct snd_dma_device dma_device;
struct snd_dma_buffer dma_buffer;
+ unsigned int dma_buf_id;
size_t dma_max;
/* -- hardware operations -- */
unsigned int open_flag: 1; /* lowlevel device has been opened */
snd_pcm_runtime_t *runtime;
/* -- timer section -- */
snd_timer_t *timer; /* timer */
- int timer_running: 1; /* time is running */
+ unsigned timer_running: 1; /* time is running */
spinlock_t timer_lock;
/* -- next substream -- */
snd_pcm_substream_t *next;
snd_info_entry_t *proc_sw_params_entry;
snd_info_entry_t *proc_status_entry;
snd_info_entry_t *proc_prealloc_entry;
+ /* misc flags */
+ unsigned int no_mmap_ctrl: 1;
};
#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
extern rwlock_t snd_pcm_link_rwlock;
int snd_pcm_info(snd_pcm_substream_t * substream, snd_pcm_info_t *info);
-int snd_pcm_info_user(snd_pcm_substream_t * substream, snd_pcm_info_t *info);
+int snd_pcm_info_user(snd_pcm_substream_t * substream, snd_pcm_info_t __user *info);
int snd_pcm_status(snd_pcm_substream_t * substream, snd_pcm_status_t *status);
int snd_pcm_prepare(snd_pcm_substream_t *substream);
int snd_pcm_start(snd_pcm_substream_t *substream);
int snd_pcm_stop(snd_pcm_substream_t *substream, int status);
+int snd_pcm_drain_done(snd_pcm_substream_t *substream);
#ifdef CONFIG_PM
int snd_pcm_suspend(snd_pcm_substream_t *substream);
int snd_pcm_suspend_all(snd_pcm_t *pcm);
int snd_pcm_kernel_playback_ioctl(snd_pcm_substream_t *substream, unsigned int cmd, void *arg);
int snd_pcm_kernel_capture_ioctl(snd_pcm_substream_t *substream, unsigned int cmd, void *arg);
int snd_pcm_kernel_ioctl(snd_pcm_substream_t *substream, unsigned int cmd, void *arg);
-int snd_pcm_open(struct inode *inode, struct file *file);
-int snd_pcm_release(struct inode *inode, struct file *file);
-unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait);
-unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait);
int snd_pcm_open_substream(snd_pcm_t *pcm, int stream, snd_pcm_substream_t **rsubstream);
void snd_pcm_release_substream(snd_pcm_substream_t *substream);
void snd_pcm_vma_notify_data(void *client, void *data);
return runtime->buffer_size - snd_pcm_capture_avail(runtime);
}
+/**
+ * snd_pcm_playback_ready - check whether the playback buffer is available
+ * @substream: the pcm substream instance
+ *
+ * Checks whether enough free space is available on the playback buffer.
+ *
+ * Returns non-zero if available, or zero if not.
+ */
+static inline int snd_pcm_playback_ready(snd_pcm_substream_t *substream)
+{
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ return snd_pcm_playback_avail(runtime) >= runtime->control->avail_min;
+}
+
+/**
+ * snd_pcm_capture_ready - check whether the capture buffer is available
+ * @substream: the pcm substream instance
+ *
+ * Checks whether enough capture data is available on the capture buffer.
+ *
+ * Returns non-zero if available, or zero if not.
+ */
+static inline int snd_pcm_capture_ready(snd_pcm_substream_t *substream)
+{
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ return snd_pcm_capture_avail(runtime) >= runtime->control->avail_min;
+}
+
+/**
+ * snd_pcm_playback_data - check whether any data exists on the playback buffer
+ * @substream: the pcm substream instance
+ *
+ * Checks whether any data exists on the playback buffer. If stop_threshold
+ * is bigger or equal to boundary, then this function returns always non-zero.
+ *
+ * Returns non-zero if exists, or zero if not.
+ */
+static inline int snd_pcm_playback_data(snd_pcm_substream_t *substream)
+{
+ snd_pcm_runtime_t *runtime = substream->runtime;
+
+ if (runtime->stop_threshold >= runtime->boundary)
+ return 1;
+ return snd_pcm_playback_avail(runtime) < runtime->buffer_size;
+}
+
+/**
+ * snd_pcm_playback_empty - check whether the playback buffer is empty
+ * @substream: the pcm substream instance
+ *
+ * Checks whether the playback buffer is empty.
+ *
+ * Returns non-zero if empty, or zero if not.
+ */
+static inline int snd_pcm_playback_empty(snd_pcm_substream_t *substream)
+{
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ return snd_pcm_playback_avail(runtime) >= runtime->buffer_size;
+}
+
+/**
+ * snd_pcm_capture_empty - check whether the capture buffer is empty
+ * @substream: the pcm substream instance
+ *
+ * Checks whether the capture buffer is empty.
+ *
+ * Returns non-zero if empty, or zero if not.
+ */
+static inline int snd_pcm_capture_empty(snd_pcm_substream_t *substream)
+{
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ return snd_pcm_capture_avail(runtime) == 0;
+}
+
static inline void snd_pcm_trigger_done(snd_pcm_substream_t *substream,
snd_pcm_substream_t *master)
{
void snd_interval_mulkdiv(const snd_interval_t *a, unsigned int k,
const snd_interval_t *b, snd_interval_t *c);
int snd_interval_list(snd_interval_t *i, unsigned int count, unsigned int *list, unsigned int mask);
-int snd_interval_step(snd_interval_t *i, unsigned int min, unsigned int step);
int snd_interval_ratnum(snd_interval_t *i,
unsigned int rats_count, ratnum_t *rats,
unsigned int *nump, unsigned int *denp);
-int snd_interval_ratden(snd_interval_t *i,
- unsigned int rats_count, ratden_t *rats,
- unsigned int *nump, unsigned int *denp);
void _snd_pcm_hw_params_any(snd_pcm_hw_params_t *params);
void _snd_pcm_hw_param_setempty(snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var);
int snd_pcm_hw_params_choose(snd_pcm_substream_t *substream, snd_pcm_hw_params_t *params);
int snd_pcm_hw_refine(snd_pcm_substream_t *substream, snd_pcm_hw_params_t *params);
+int snd_pcm_hw_params(snd_pcm_substream_t *substream, snd_pcm_hw_params_t *params);
int snd_pcm_hw_constraints_init(snd_pcm_substream_t *substream);
int snd_pcm_hw_constraints_complete(snd_pcm_substream_t *substream);
int snd_pcm_format_big_endian(snd_pcm_format_t format);
int snd_pcm_format_width(snd_pcm_format_t format); /* in bits */
int snd_pcm_format_physical_width(snd_pcm_format_t format); /* in bits */
-u_int64_t snd_pcm_format_silence_64(snd_pcm_format_t format);
+const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format);
int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int frames);
snd_pcm_format_t snd_pcm_build_linear_format(int width, int unsignd, int big_endian);
-ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples);
const char *snd_pcm_format_name(snd_pcm_format_t format);
-const char *snd_pcm_subformat_name(snd_pcm_subformat_t subformat);
void snd_pcm_set_ops(snd_pcm_t * pcm, int direction, snd_pcm_ops_t *ops);
void snd_pcm_set_sync(snd_pcm_substream_t * substream);
int snd_pcm_playback_xrun_asap(snd_pcm_substream_t *substream);
int snd_pcm_capture_xrun_asap(snd_pcm_substream_t *substream);
void snd_pcm_playback_silence(snd_pcm_substream_t *substream, snd_pcm_uframes_t new_hw_ptr);
-int snd_pcm_playback_ready(snd_pcm_substream_t *substream);
-int snd_pcm_capture_ready(snd_pcm_substream_t *substream);
-long snd_pcm_playback_ready_jiffies(snd_pcm_substream_t *substream);
-long snd_pcm_capture_ready_jiffies(snd_pcm_substream_t *substream);
-int snd_pcm_playback_data(snd_pcm_substream_t *substream);
-int snd_pcm_playback_empty(snd_pcm_substream_t *substream);
-int snd_pcm_capture_empty(snd_pcm_substream_t *substream);
void snd_pcm_tick_prepare(snd_pcm_substream_t *substream);
void snd_pcm_tick_set(snd_pcm_substream_t *substream, unsigned long ticks);
void snd_pcm_tick_elapsed(snd_pcm_substream_t *substream);
void snd_pcm_period_elapsed(snd_pcm_substream_t *substream);
snd_pcm_sframes_t snd_pcm_lib_write(snd_pcm_substream_t *substream,
- const void *buf, snd_pcm_uframes_t frames);
+ const void __user *buf,
+ snd_pcm_uframes_t frames);
snd_pcm_sframes_t snd_pcm_lib_read(snd_pcm_substream_t *substream,
- void *buf, snd_pcm_uframes_t frames);
+ void __user *buf, snd_pcm_uframes_t frames);
snd_pcm_sframes_t snd_pcm_lib_writev(snd_pcm_substream_t *substream,
- void **bufs, snd_pcm_uframes_t frames);
+ void __user **bufs, snd_pcm_uframes_t frames);
snd_pcm_sframes_t snd_pcm_lib_readv(snd_pcm_substream_t *substream,
- void **bufs, snd_pcm_uframes_t frames);
+ void __user **bufs, snd_pcm_uframes_t frames);
int snd_pcm_limit_hw_rates(snd_pcm_runtime_t *runtime);
+static inline void snd_pcm_set_runtime_buffer(snd_pcm_substream_t *substream,
+ struct snd_dma_buffer *bufp)
+{
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ if (bufp) {
+ runtime->dma_buffer_p = bufp;
+ runtime->dma_area = bufp->area;
+ runtime->dma_addr = bufp->addr;
+ runtime->dma_bytes = bufp->bytes;
+ } else {
+ runtime->dma_buffer_p = NULL;
+ runtime->dma_area = NULL;
+ runtime->dma_addr = 0;
+ runtime->dma_bytes = 0;
+ }
+}
/*
* Timer interface
int snd_pcm_lib_malloc_pages(snd_pcm_substream_t *substream, size_t size);
int snd_pcm_lib_free_pages(snd_pcm_substream_t *substream);
-#define snd_pcm_substream_sgbuf(substream) ((substream)->runtime->dma_private)
+#define snd_pcm_substream_sgbuf(substream) ((substream)->runtime->dma_buffer_p->private_data)
#define snd_pcm_sgbuf_pages(size) snd_sgbuf_aligned_pages(size)
#define snd_pcm_sgbuf_get_addr(sgbuf,ofs) snd_sgbuf_get_addr(sgbuf,ofs)
struct page *snd_pcm_sgbuf_ops_page(snd_pcm_substream_t *substream, unsigned long offset);
+/* handle mmap counter - PCM mmap callback should handle this counter properly */
+static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area)
+{
+ snd_pcm_substream_t *substream = (snd_pcm_substream_t *)area->vm_private_data;
+ atomic_inc(&substream->runtime->mmap_count);
+}
+
+static inline void snd_pcm_mmap_data_close(struct vm_area_struct *area)
+{
+ snd_pcm_substream_t *substream = (snd_pcm_substream_t *)area->vm_private_data;
+ atomic_dec(&substream->runtime->mmap_count);
+}
+
+/* mmap for io-memory area */
+#if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA)
+#define SNDRV_PCM_INFO_MMAP_IOMEM SNDRV_PCM_INFO_MMAP
+int snd_pcm_lib_mmap_iomem(snd_pcm_substream_t *substream, struct vm_area_struct *area);
+#else
+#define SNDRV_PCM_INFO_MMAP_IOMEM 0
+#define snd_pcm_lib_mmap_iomem NULL
+#endif
+
static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max)
{
*max = dma < 4 ? 64 * 1024 : 128 * 1024;
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