#include <linux/poll.h>
#include <linux/mm.h>
#include <linux/bitops.h>
+#include <linux/pm_qos_params.h>
#define snd_pcm_substream_chip(substream) ((substream)->private_data)
#define snd_pcm_chip(pcm) ((pcm)->private_data)
unsigned int mask;
};
+struct snd_pcm_hwptr_log;
+
struct snd_pcm_runtime {
/* -- Status -- */
struct snd_pcm_substream *trigger_master;
struct snd_pcm_mmap_control *control;
/* -- locking / scheduling -- */
- wait_queue_head_t sleep;
+ unsigned int twake: 1; /* do transfer (!poll) wakeup */
+ wait_queue_head_t sleep; /* poll sleep */
+ wait_queue_head_t tsleep; /* transfer sleep */
struct fasync_struct *fasync;
/* -- private section -- */
/* -- OSS things -- */
struct snd_pcm_oss_runtime oss;
#endif
+
+#ifdef CONFIG_SND_PCM_XRUN_DEBUG
+ struct snd_pcm_hwptr_log *hwptr_log;
+#endif
};
struct snd_pcm_group { /* keep linked substreams */
int count;
};
+struct pid;
+
struct snd_pcm_substream {
struct snd_pcm *pcm;
struct snd_pcm_str *pstr;
int number;
char name[32]; /* substream name */
int stream; /* stream (direction) */
- char latency_id[20]; /* latency identifier */
+ struct pm_qos_request_list *latency_pm_qos_req; /* pm_qos request */
size_t buffer_bytes_max; /* limit ring buffer size */
struct snd_dma_buffer dma_buffer;
unsigned int dma_buf_id;
atomic_t mmap_count;
unsigned int f_flags;
void (*pcm_release)(struct snd_pcm_substream *);
+ struct pid *pid;
#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
/* -- OSS things -- */
struct snd_pcm_oss_substream oss;
int snd_pcm_lib_interleave_len(struct snd_pcm_substream *substream);
int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream,
unsigned int cmd, void *arg);
+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);
int snd_pcm_playback_xrun_check(struct snd_pcm_substream *substream);
int snd_pcm_capture_xrun_check(struct snd_pcm_substream *substream);
int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size);
int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream);
+int _snd_pcm_lib_alloc_vmalloc_buffer(struct snd_pcm_substream *substream,
+ size_t size, gfp_t gfp_flags);
+int snd_pcm_lib_free_vmalloc_buffer(struct snd_pcm_substream *substream);
+struct page *snd_pcm_lib_get_vmalloc_page(struct snd_pcm_substream *substream,
+ unsigned long offset);
+#if 0 /* for kernel-doc */
+/**
+ * snd_pcm_lib_alloc_vmalloc_buffer - allocate virtual DMA buffer
+ * @substream: the substream to allocate the buffer to
+ * @size: the requested buffer size, in bytes
+ *
+ * Allocates the PCM substream buffer using vmalloc(), i.e., the memory is
+ * contiguous in kernel virtual space, but not in physical memory. Use this
+ * if the buffer is accessed by kernel code but not by device DMA.
+ *
+ * Returns 1 if the buffer was changed, 0 if not changed, or a negative error
+ * code.
+ */
+static int snd_pcm_lib_alloc_vmalloc_buffer
+ (struct snd_pcm_substream *substream, size_t size);
+/**
+ * snd_pcm_lib_alloc_vmalloc_32_buffer - allocate 32-bit-addressable buffer
+ * @substream: the substream to allocate the buffer to
+ * @size: the requested buffer size, in bytes
+ *
+ * This function works like snd_pcm_lib_alloc_vmalloc_buffer(), but uses
+ * vmalloc_32(), i.e., the pages are allocated from 32-bit-addressable memory.
+ */
+static int snd_pcm_lib_alloc_vmalloc_32_buffer
+ (struct snd_pcm_substream *substream, size_t size);
+#endif
+#define snd_pcm_lib_alloc_vmalloc_buffer(subs, size) \
+ _snd_pcm_lib_alloc_vmalloc_buffer \
+ (subs, size, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO)
+#define snd_pcm_lib_alloc_vmalloc_32_buffer(subs, size) \
+ _snd_pcm_lib_alloc_vmalloc_buffer \
+ (subs, size, GFP_KERNEL | GFP_DMA32 | __GFP_ZERO)
+
+#ifdef CONFIG_SND_DMA_SGBUF
/*
* SG-buffer handling
*/
unsigned int snd_pcm_sgbuf_get_chunk_size(struct snd_pcm_substream *substream,
unsigned int ofs, unsigned int size);
+#else /* !SND_DMA_SGBUF */
+/*
+ * fake using a continuous buffer
+ */
+static inline dma_addr_t
+snd_pcm_sgbuf_get_addr(struct snd_pcm_substream *substream, unsigned int ofs)
+{
+ return substream->runtime->dma_addr + ofs;
+}
+
+static inline void *
+snd_pcm_sgbuf_get_ptr(struct snd_pcm_substream *substream, unsigned int ofs)
+{
+ return substream->runtime->dma_area + ofs;
+}
+
+#define snd_pcm_sgbuf_ops_page NULL
+
+#define snd_pcm_sgbuf_get_chunk_size(subs, ofs, size) (size)
+
+#endif /* SND_DMA_SGBUF */
+
/* handle mmap counter - PCM mmap callback should handle this counter properly */
static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area)
{
#define snd_pcm_lib_mmap_iomem NULL
#endif
+int snd_pcm_lib_mmap_noncached(struct snd_pcm_substream *substream,
+ struct vm_area_struct *area);
+#define snd_pcm_lib_mmap_vmalloc snd_pcm_lib_mmap_noncached
+
static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max)
{
*max = dma < 4 ? 64 * 1024 : 128 * 1024;
#define PCM_RUNTIME_CHECK(sub) snd_BUG_ON(!(sub) || !(sub)->runtime)
+const char *snd_pcm_format_name(snd_pcm_format_t format);
+
#endif /* __SOUND_PCM_H */