Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1040 insertions, 0 deletions

diff --git a/include/sound/pcm.h b/include/sound/pcm.h
new file mode 100644
index 000000000000..53fc04d75bad
--- /dev/null
+++ b/include/sound/pcm.h
@@ -0,0 +1,1040 @@
+#ifndef __SOUND_PCM_H
+#define __SOUND_PCM_H
+
+/*
+ *  Digital Audio (PCM) abstract layer
+ *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *                   Abramo Bagnara <abramo@alsa-project.org>
+ *
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#include <sound/asound.h>
+#include <sound/memalloc.h>
+#include <linux/poll.h>
+#include <linux/bitops.h>
+
+typedef sndrv_pcm_uframes_t snd_pcm_uframes_t;
+typedef sndrv_pcm_sframes_t snd_pcm_sframes_t;
+typedef enum sndrv_pcm_class snd_pcm_class_t;
+typedef enum sndrv_pcm_subclass snd_pcm_subclass_t;
+typedef enum sndrv_pcm_stream snd_pcm_stream_t;
+typedef enum sndrv_pcm_access snd_pcm_access_t;
+typedef enum sndrv_pcm_format snd_pcm_format_t;
+typedef enum sndrv_pcm_subformat snd_pcm_subformat_t;
+typedef enum sndrv_pcm_state snd_pcm_state_t;
+typedef union sndrv_pcm_sync_id snd_pcm_sync_id_t;
+typedef struct sndrv_pcm_info snd_pcm_info_t;
+typedef enum sndrv_pcm_hw_param snd_pcm_hw_param_t;
+typedef struct sndrv_pcm_hw_params snd_pcm_hw_params_t;
+typedef enum sndrv_pcm_start snd_pcm_start_t;
+typedef enum sndrv_pcm_xrun snd_pcm_xrun_t;
+typedef enum sndrv_pcm_tstamp snd_pcm_tstamp_t;
+typedef struct sndrv_pcm_sw_params snd_pcm_sw_params_t;
+typedef struct sndrv_pcm_channel_info snd_pcm_channel_info_t;
+typedef struct sndrv_pcm_status snd_pcm_status_t;
+typedef struct sndrv_pcm_mmap_status snd_pcm_mmap_status_t;
+typedef struct sndrv_pcm_mmap_control snd_pcm_mmap_control_t;
+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_chip(pcm) ((pcm)->private_data)
+
+typedef struct _snd_pcm_file snd_pcm_file_t;
+typedef struct _snd_pcm_runtime snd_pcm_runtime_t;
+
+#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
+#include "pcm_oss.h"
+#endif
+
+/*
+ *  Hardware (lowlevel) section
+ */
+
+typedef struct _snd_pcm_hardware {
+	unsigned int info;		/* SNDRV_PCM_INFO_* */
+	u64 formats;			/* SNDRV_PCM_FMTBIT_* */
+	unsigned int rates;		/* SNDRV_PCM_RATE_* */
+	unsigned int rate_min;		/* min rate */
+	unsigned int rate_max;		/* max rate */
+	unsigned int channels_min;	/* min channels */
+	unsigned int channels_max;	/* max channels */
+	size_t buffer_bytes_max;	/* max buffer size */
+	size_t period_bytes_min;	/* min period size */
+	size_t period_bytes_max;	/* max period size */
+	unsigned int periods_min;	/* min # of periods */
+	unsigned int periods_max;	/* max # of periods */
+	size_t fifo_size;		/* fifo size in bytes */
+} snd_pcm_hardware_t;
+
+typedef struct _snd_pcm_ops {
+	int (*open)(snd_pcm_substream_t *substream);
+	int (*close)(snd_pcm_substream_t *substream);
+	int (*ioctl)(snd_pcm_substream_t * substream,
+		     unsigned int cmd, void *arg);
+	int (*hw_params)(snd_pcm_substream_t * substream, snd_pcm_hw_params_t * params);
+	int (*hw_free)(snd_pcm_substream_t *substream);
+	int (*prepare)(snd_pcm_substream_t * substream);
+	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 __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_DEVICES		8
+
+#define SNDRV_PCM_IOCTL1_FALSE		((void *)0)
+#define SNDRV_PCM_IOCTL1_TRUE		((void *)1)
+
+#define SNDRV_PCM_IOCTL1_RESET		0
+#define SNDRV_PCM_IOCTL1_INFO		1
+#define SNDRV_PCM_IOCTL1_CHANNEL_INFO	2
+#define SNDRV_PCM_IOCTL1_GSTATE		3
+
+#define SNDRV_PCM_TRIGGER_STOP		0
+#define SNDRV_PCM_TRIGGER_START		1
+#define SNDRV_PCM_TRIGGER_PAUSE_PUSH	3
+#define SNDRV_PCM_TRIGGER_PAUSE_RELEASE	4
+#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 */
+#define SNDRV_PCM_RATE_11025		(1<<2)		/* 11025Hz */
+#define SNDRV_PCM_RATE_16000		(1<<3)		/* 16000Hz */
+#define SNDRV_PCM_RATE_22050		(1<<4)		/* 22050Hz */
+#define SNDRV_PCM_RATE_32000		(1<<5)		/* 32000Hz */
+#define SNDRV_PCM_RATE_44100		(1<<6)		/* 44100Hz */
+#define SNDRV_PCM_RATE_48000		(1<<7)		/* 48000Hz */
+#define SNDRV_PCM_RATE_64000		(1<<8)		/* 64000Hz */
+#define SNDRV_PCM_RATE_88200		(1<<9)		/* 88200Hz */
+#define SNDRV_PCM_RATE_96000		(1<<10)		/* 96000Hz */
+#define SNDRV_PCM_RATE_176400		(1<<11)		/* 176400Hz */
+#define SNDRV_PCM_RATE_192000		(1<<12)		/* 192000Hz */
+
+#define SNDRV_PCM_RATE_CONTINUOUS	(1<<30)		/* continuous range */
+#define SNDRV_PCM_RATE_KNOT		(1<<31)		/* supports more non-continuos rates */
+
+#define SNDRV_PCM_RATE_8000_44100	(SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_11025|\
+					 SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_22050|\
+					 SNDRV_PCM_RATE_32000|SNDRV_PCM_RATE_44100)
+#define SNDRV_PCM_RATE_8000_48000	(SNDRV_PCM_RATE_8000_44100|SNDRV_PCM_RATE_48000)
+#define SNDRV_PCM_RATE_8000_96000	(SNDRV_PCM_RATE_8000_48000|SNDRV_PCM_RATE_64000|\
+					 SNDRV_PCM_RATE_88200|SNDRV_PCM_RATE_96000)
+#define SNDRV_PCM_RATE_8000_192000	(SNDRV_PCM_RATE_8000_96000|SNDRV_PCM_RATE_176400|\
+					 SNDRV_PCM_RATE_192000)
+#define SNDRV_PCM_FMTBIT_S8		(1ULL << SNDRV_PCM_FORMAT_S8)
+#define SNDRV_PCM_FMTBIT_U8		(1ULL << SNDRV_PCM_FORMAT_U8)
+#define SNDRV_PCM_FMTBIT_S16_LE		(1ULL << SNDRV_PCM_FORMAT_S16_LE)
+#define SNDRV_PCM_FMTBIT_S16_BE		(1ULL << SNDRV_PCM_FORMAT_S16_BE)
+#define SNDRV_PCM_FMTBIT_U16_LE		(1ULL << SNDRV_PCM_FORMAT_U16_LE)
+#define SNDRV_PCM_FMTBIT_U16_BE		(1ULL << SNDRV_PCM_FORMAT_U16_BE)
+#define SNDRV_PCM_FMTBIT_S24_LE		(1ULL << SNDRV_PCM_FORMAT_S24_LE)
+#define SNDRV_PCM_FMTBIT_S24_BE		(1ULL << SNDRV_PCM_FORMAT_S24_BE)
+#define SNDRV_PCM_FMTBIT_U24_LE		(1ULL << SNDRV_PCM_FORMAT_U24_LE)
+#define SNDRV_PCM_FMTBIT_U24_BE		(1ULL << SNDRV_PCM_FORMAT_U24_BE)
+#define SNDRV_PCM_FMTBIT_S32_LE		(1ULL << SNDRV_PCM_FORMAT_S32_LE)
+#define SNDRV_PCM_FMTBIT_S32_BE		(1ULL << SNDRV_PCM_FORMAT_S32_BE)
+#define SNDRV_PCM_FMTBIT_U32_LE		(1ULL << SNDRV_PCM_FORMAT_U32_LE)
+#define SNDRV_PCM_FMTBIT_U32_BE		(1ULL << SNDRV_PCM_FORMAT_U32_BE)
+#define SNDRV_PCM_FMTBIT_FLOAT_LE	(1ULL << SNDRV_PCM_FORMAT_FLOAT_LE)
+#define SNDRV_PCM_FMTBIT_FLOAT_BE	(1ULL << SNDRV_PCM_FORMAT_FLOAT_BE)
+#define SNDRV_PCM_FMTBIT_FLOAT64_LE	(1ULL << SNDRV_PCM_FORMAT_FLOAT64_LE)
+#define SNDRV_PCM_FMTBIT_FLOAT64_BE	(1ULL << SNDRV_PCM_FORMAT_FLOAT64_BE)
+#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE (1ULL << SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE)
+#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE (1ULL << SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE)
+#define SNDRV_PCM_FMTBIT_MU_LAW		(1ULL << SNDRV_PCM_FORMAT_MU_LAW)
+#define SNDRV_PCM_FMTBIT_A_LAW		(1ULL << SNDRV_PCM_FORMAT_A_LAW)
+#define SNDRV_PCM_FMTBIT_IMA_ADPCM	(1ULL << SNDRV_PCM_FORMAT_IMA_ADPCM)
+#define SNDRV_PCM_FMTBIT_MPEG		(1ULL << SNDRV_PCM_FORMAT_MPEG)
+#define SNDRV_PCM_FMTBIT_GSM		(1ULL << SNDRV_PCM_FORMAT_GSM)
+#define SNDRV_PCM_FMTBIT_SPECIAL	(1ULL << SNDRV_PCM_FORMAT_SPECIAL)
+#define SNDRV_PCM_FMTBIT_S24_3LE	(1ULL << SNDRV_PCM_FORMAT_S24_3LE)
+#define SNDRV_PCM_FMTBIT_U24_3LE	(1ULL << SNDRV_PCM_FORMAT_U24_3LE)
+#define SNDRV_PCM_FMTBIT_S24_3BE	(1ULL << SNDRV_PCM_FORMAT_S24_3BE)
+#define SNDRV_PCM_FMTBIT_U24_3BE	(1ULL << SNDRV_PCM_FORMAT_U24_3BE)
+#define SNDRV_PCM_FMTBIT_S20_3LE	(1ULL << SNDRV_PCM_FORMAT_S20_3LE)
+#define SNDRV_PCM_FMTBIT_U20_3LE	(1ULL << SNDRV_PCM_FORMAT_U20_3LE)
+#define SNDRV_PCM_FMTBIT_S20_3BE	(1ULL << SNDRV_PCM_FORMAT_S20_3BE)
+#define SNDRV_PCM_FMTBIT_U20_3BE	(1ULL << SNDRV_PCM_FORMAT_U20_3BE)
+#define SNDRV_PCM_FMTBIT_S18_3LE	(1ULL << SNDRV_PCM_FORMAT_S18_3LE)
+#define SNDRV_PCM_FMTBIT_U18_3LE	(1ULL << SNDRV_PCM_FORMAT_U18_3LE)
+#define SNDRV_PCM_FMTBIT_S18_3BE	(1ULL << SNDRV_PCM_FORMAT_S18_3BE)
+#define SNDRV_PCM_FMTBIT_U18_3BE	(1ULL << SNDRV_PCM_FORMAT_U18_3BE)
+
+#ifdef SNDRV_LITTLE_ENDIAN
+#define SNDRV_PCM_FMTBIT_S16		SNDRV_PCM_FMTBIT_S16_LE
+#define SNDRV_PCM_FMTBIT_U16		SNDRV_PCM_FMTBIT_U16_LE
+#define SNDRV_PCM_FMTBIT_S24		SNDRV_PCM_FMTBIT_S24_LE
+#define SNDRV_PCM_FMTBIT_U24		SNDRV_PCM_FMTBIT_U24_LE
+#define SNDRV_PCM_FMTBIT_S32		SNDRV_PCM_FMTBIT_S32_LE
+#define SNDRV_PCM_FMTBIT_U32		SNDRV_PCM_FMTBIT_U32_LE
+#define SNDRV_PCM_FMTBIT_FLOAT		SNDRV_PCM_FMTBIT_FLOAT_LE
+#define SNDRV_PCM_FMTBIT_FLOAT64	SNDRV_PCM_FMTBIT_FLOAT64_LE
+#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
+#endif
+#ifdef SNDRV_BIG_ENDIAN
+#define SNDRV_PCM_FMTBIT_S16		SNDRV_PCM_FMTBIT_S16_BE
+#define SNDRV_PCM_FMTBIT_U16		SNDRV_PCM_FMTBIT_U16_BE
+#define SNDRV_PCM_FMTBIT_S24		SNDRV_PCM_FMTBIT_S24_BE
+#define SNDRV_PCM_FMTBIT_U24		SNDRV_PCM_FMTBIT_U24_BE
+#define SNDRV_PCM_FMTBIT_S32		SNDRV_PCM_FMTBIT_S32_BE
+#define SNDRV_PCM_FMTBIT_U32		SNDRV_PCM_FMTBIT_U32_BE
+#define SNDRV_PCM_FMTBIT_FLOAT		SNDRV_PCM_FMTBIT_FLOAT_BE
+#define SNDRV_PCM_FMTBIT_FLOAT64	SNDRV_PCM_FMTBIT_FLOAT64_BE
+#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
+#endif
+
+struct _snd_pcm_file {
+	snd_pcm_substream_t * substream;
+	struct _snd_pcm_file * next;
+};
+
+typedef struct _snd_pcm_hw_rule snd_pcm_hw_rule_t;
+
+typedef int (*snd_pcm_hw_rule_func_t)(snd_pcm_hw_params_t *params,
+				      snd_pcm_hw_rule_t *rule);
+
+struct _snd_pcm_hw_rule {
+	unsigned int cond;
+	snd_pcm_hw_rule_func_t func;
+	int var;
+	int deps[4];
+	void *private;
+};
+
+typedef struct _snd_pcm_hw_constraints {
+	snd_mask_t masks[SNDRV_PCM_HW_PARAM_LAST_MASK - 
+			 SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
+	snd_interval_t intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
+			     SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
+	unsigned int rules_num;
+	unsigned int rules_all;
+	snd_pcm_hw_rule_t *rules;
+} snd_pcm_hw_constraints_t;
+
+static inline snd_mask_t *constrs_mask(snd_pcm_hw_constraints_t *constrs,
+				       snd_pcm_hw_param_t var)
+{
+	return &constrs->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK];
+}
+
+static inline snd_interval_t *constrs_interval(snd_pcm_hw_constraints_t *constrs,
+					  snd_pcm_hw_param_t var)
+{
+	return &constrs->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
+}
+
+typedef struct {
+	unsigned int num;
+	unsigned int den_min, den_max, den_step;
+} ratnum_t;
+
+typedef struct {
+	unsigned int num_min, num_max, num_step;
+	unsigned int den;
+} ratden_t;
+
+typedef struct {
+	int nrats;
+	ratnum_t *rats;
+} snd_pcm_hw_constraint_ratnums_t;
+
+typedef struct {
+	int nrats;
+	ratden_t *rats;
+} snd_pcm_hw_constraint_ratdens_t;
+
+typedef struct {
+	unsigned int count;
+	unsigned int *list;
+	unsigned int mask;
+} snd_pcm_hw_constraint_list_t;
+
+struct _snd_pcm_runtime {
+	/* -- Status -- */
+	snd_pcm_substream_t *trigger_master;
+	snd_timestamp_t trigger_tstamp;	/* trigger timestamp */
+	int overrange;
+	snd_pcm_uframes_t avail_max;
+	snd_pcm_uframes_t hw_ptr_base;	/* Position at buffer restart */
+	snd_pcm_uframes_t hw_ptr_interrupt; /* Position at interrupt time*/
+
+	/* -- HW params -- */
+	snd_pcm_access_t access;	/* access mode */
+	snd_pcm_format_t format;	/* SNDRV_PCM_FORMAT_* */
+	snd_pcm_subformat_t subformat;	/* subformat */
+	unsigned int rate;		/* rate in Hz */
+	unsigned int channels;		/* channels */
+	snd_pcm_uframes_t period_size;	/* period size */
+	unsigned int periods;		/* periods */
+	snd_pcm_uframes_t buffer_size;	/* buffer size */
+	unsigned int tick_time;		/* tick time */
+	snd_pcm_uframes_t min_align;	/* Min alignment for the format */
+	size_t byte_align;
+	unsigned int frame_bits;
+	unsigned int sample_bits;
+	unsigned int info;
+	unsigned int rate_num;
+	unsigned int rate_den;
+
+	/* -- SW params -- */
+	int tstamp_timespec;		/* use timeval (0) or timespec (1) */
+	snd_pcm_tstamp_t tstamp_mode;	/* mmap timestamp is updated */
+  	unsigned int period_step;
+	unsigned int sleep_min;		/* min ticks to sleep */
+	snd_pcm_uframes_t xfer_align;	/* xfer size need to be a multiple */
+	snd_pcm_uframes_t start_threshold;
+	snd_pcm_uframes_t stop_threshold;
+	snd_pcm_uframes_t silence_threshold; /* Silence filling happens when
+						noise is nearest than this */
+	snd_pcm_uframes_t silence_size;	/* Silence filling size */
+	snd_pcm_uframes_t boundary;	/* pointers wrap point */
+
+	snd_pcm_uframes_t silence_start; /* starting pointer to silence area */
+	snd_pcm_uframes_t silence_filled; /* size filled with silence */
+
+	snd_pcm_sync_id_t sync;		/* hardware synchronization ID */
+
+	/* -- mmap -- */
+	volatile snd_pcm_mmap_status_t *status;
+	volatile snd_pcm_mmap_control_t *control;
+	atomic_t mmap_count;
+
+	/* -- locking / scheduling -- */
+	wait_queue_head_t sleep;
+	struct timer_list tick_timer;
+	struct fasync_struct *fasync;
+
+	/* -- private section -- */
+	void *private_data;
+	void (*private_free)(snd_pcm_runtime_t *runtime);
+
+	/* -- hardware description -- */
+	snd_pcm_hardware_t hw;
+	snd_pcm_hw_constraints_t hw_constraints;
+
+	/* -- interrupt callbacks -- */
+	void (*transfer_ack_begin)(snd_pcm_substream_t *substream);
+	void (*transfer_ack_end)(snd_pcm_substream_t *substream);
+
+	/* -- timer -- */
+	unsigned int timer_resolution;	/* timer resolution */
+
+	/* -- DMA -- */           
+	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 */
+
+	struct snd_dma_buffer *dma_buffer_p;	/* allocated buffer */
+
+#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
+	/* -- OSS things -- */
+	snd_pcm_oss_runtime_t oss;
+#endif
+};
+
+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 {
+	snd_pcm_t *pcm;
+	snd_pcm_str_t *pstr;
+	void *private_data;		/* copied from pcm->private_data */
+	int number;
+	char name[32];			/* substream name */
+	int stream;			/* stream (direction) */
+	size_t buffer_bytes_max;	/* limit ring buffer size */
+	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_ops_t *ops;
+	/* -- runtime information -- */
+	snd_pcm_runtime_t *runtime;
+        /* -- timer section -- */
+	snd_timer_t *timer;		/* timer */
+	unsigned timer_running: 1;	/* time is running */
+	spinlock_t timer_lock;
+	/* -- next substream -- */
+	snd_pcm_substream_t *next;
+	/* -- linked substreams -- */
+	struct list_head link_list;	/* linked list member */
+	snd_pcm_group_t self_group;	/* fake group for non linked substream (with substream lock inside) */
+	snd_pcm_group_t *group;		/* pointer to current group */
+	/* -- assigned files -- */
+	snd_pcm_file_t *file;
+	struct file *ffile;
+#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
+	/* -- OSS things -- */
+	snd_pcm_oss_substream_t oss;
+#endif
+	snd_info_entry_t *proc_root;
+	snd_info_entry_t *proc_info_entry;
+	snd_info_entry_t *proc_hw_params_entry;
+	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)
+#define SUBSTREAM_BUSY(substream) ((substream)->file != NULL || ((substream)->oss.file != NULL))
+#else
+#define SUBSTREAM_BUSY(substream) ((substream)->file != NULL)
+#endif
+
+
+struct _snd_pcm_str {
+	int stream;				/* stream (direction) */
+	snd_pcm_t *pcm;
+	/* -- substreams -- */
+	unsigned int substream_count;
+	unsigned int substream_opened;
+	snd_pcm_substream_t *substream;
+#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
+	/* -- OSS things -- */
+	snd_pcm_oss_stream_t oss;
+#endif
+	snd_pcm_file_t *files;
+	snd_minor_t *reg;
+	snd_info_entry_t *proc_root;
+	snd_info_entry_t *proc_info_entry;
+#ifdef CONFIG_SND_DEBUG
+	unsigned int xrun_debug;	/* 0 = disabled, 1 = verbose, 2 = stacktrace */
+	snd_info_entry_t *proc_xrun_debug_entry;
+#endif
+};
+
+struct _snd_pcm {
+	snd_card_t *card;
+	unsigned int device;	/* device number */
+	unsigned int info_flags;
+	unsigned short dev_class;
+	unsigned short dev_subclass;
+	char id[64];
+	char name[80];
+	snd_pcm_str_t streams[2];
+	struct semaphore open_mutex;
+	wait_queue_head_t open_wait;
+	void *private_data;
+	void (*private_free) (snd_pcm_t *pcm);
+#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
+	snd_pcm_oss_t oss;
+#endif
+};
+
+typedef struct _snd_pcm_notify {
+	int (*n_register) (snd_pcm_t * pcm);
+	int (*n_disconnect) (snd_pcm_t * pcm);
+	int (*n_unregister) (snd_pcm_t * pcm);
+	struct list_head list;
+} snd_pcm_notify_t;
+
+/*
+ *  Registering
+ */
+
+extern snd_pcm_t *snd_pcm_devices[];
+extern snd_minor_t snd_pcm_reg[2];
+
+int snd_pcm_new(snd_card_t * card, char *id, int device,
+		int playback_count, int capture_count,
+		snd_pcm_t **rpcm);
+int snd_pcm_new_stream(snd_pcm_t *pcm, int stream, int substream_count);
+
+int snd_pcm_notify(snd_pcm_notify_t *notify, int nfree);
+
+/*
+ *  Native I/O
+ */
+
+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 __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);
+#endif
+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_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);
+int snd_pcm_mmap_data(snd_pcm_substream_t *substream, struct file *file, struct vm_area_struct *area);
+
+#if BITS_PER_LONG >= 64
+
+static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem)
+{
+	*rem = *n % div;
+	*n /= div;
+}
+
+#elif defined(i386)
+
+static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem)
+{
+	u_int32_t low, high;
+	low = *n & 0xffffffff;
+	high = *n >> 32;
+	if (high) {
+		u_int32_t high1 = high % div;
+		high /= div;
+		asm("divl %2":"=a" (low), "=d" (*rem):"rm" (div), "a" (low), "d" (high1));
+		*n = (u_int64_t)high << 32 | low;
+	} else {
+		*n = low / div;
+		*rem = low % div;
+	}
+}
+#else
+
+static inline void divl(u_int32_t high, u_int32_t low,
+			u_int32_t div,
+			u_int32_t *q, u_int32_t *r)
+{
+	u_int64_t n = (u_int64_t)high << 32 | low;
+	u_int64_t d = (u_int64_t)div << 31;
+	u_int32_t q1 = 0;
+	int c = 32;
+	while (n > 0xffffffffU) {
+		q1 <<= 1;
+		if (n >= d) {
+			n -= d;
+			q1 |= 1;
+		}
+		d >>= 1;
+		c--;
+	}
+	q1 <<= c;
+	if (n) {
+		low = n;
+		*q = q1 | (low / div);
+		*r = low % div;
+	} else {
+		*r = 0;
+		*q = q1;
+	}
+	return;
+}
+
+static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem)
+{
+	u_int32_t low, high;
+	low = *n & 0xffffffff;
+	high = *n >> 32;
+	if (high) {
+		u_int32_t high1 = high % div;
+		u_int32_t low1 = low;
+		high /= div;
+		divl(high1, low1, div, &low, rem);
+		*n = (u_int64_t)high << 32 | low;
+	} else {
+		*n = low / div;
+		*rem = low % div;
+	}
+}
+#endif
+
+/*
+ *  PCM library
+ */
+
+static inline int snd_pcm_stream_linked(snd_pcm_substream_t *substream)
+{
+	return substream->group != &substream->self_group;
+}
+
+static inline void snd_pcm_stream_lock(snd_pcm_substream_t *substream)
+{
+	read_lock(&snd_pcm_link_rwlock);
+	spin_lock(&substream->self_group.lock);
+}
+
+static inline void snd_pcm_stream_unlock(snd_pcm_substream_t *substream)
+{
+	spin_unlock(&substream->self_group.lock);
+	read_unlock(&snd_pcm_link_rwlock);
+}
+
+static inline void snd_pcm_stream_lock_irq(snd_pcm_substream_t *substream)
+{
+	read_lock_irq(&snd_pcm_link_rwlock);
+	spin_lock(&substream->self_group.lock);
+}
+
+static inline void snd_pcm_stream_unlock_irq(snd_pcm_substream_t *substream)
+{
+	spin_unlock(&substream->self_group.lock);
+	read_unlock_irq(&snd_pcm_link_rwlock);
+}
+
+#define snd_pcm_stream_lock_irqsave(substream, flags) \
+do { \
+	read_lock_irqsave(&snd_pcm_link_rwlock, (flags)); \
+	spin_lock(&substream->self_group.lock); \
+} while (0)
+
+#define snd_pcm_stream_unlock_irqrestore(substream, flags) \
+do { \
+	spin_unlock(&substream->self_group.lock); \
+	read_unlock_irqrestore(&snd_pcm_link_rwlock, (flags)); \
+} while (0)
+
+#define snd_pcm_group_for_each(pos, substream) \
+	list_for_each(pos, &substream->group->substreams)
+
+#define snd_pcm_group_substream_entry(pos) \
+	list_entry(pos, snd_pcm_substream_t, link_list)
+
+static inline int snd_pcm_running(snd_pcm_substream_t *substream)
+{
+	return (substream->runtime->status->state == SNDRV_PCM_STATE_RUNNING ||
+		(substream->runtime->status->state == SNDRV_PCM_STATE_DRAINING &&
+		 substream->stream == SNDRV_PCM_STREAM_PLAYBACK));
+}
+
+static inline ssize_t bytes_to_samples(snd_pcm_runtime_t *runtime, ssize_t size)
+{
+	return size * 8 / runtime->sample_bits;
+}
+
+static inline snd_pcm_sframes_t bytes_to_frames(snd_pcm_runtime_t *runtime, ssize_t size)
+{
+	return size * 8 / runtime->frame_bits;
+}
+
+static inline ssize_t samples_to_bytes(snd_pcm_runtime_t *runtime, ssize_t size)
+{
+	return size * runtime->sample_bits / 8;
+}
+
+static inline ssize_t frames_to_bytes(snd_pcm_runtime_t *runtime, snd_pcm_sframes_t size)
+{
+	return size * runtime->frame_bits / 8;
+}
+
+static inline int frame_aligned(snd_pcm_runtime_t *runtime, ssize_t bytes)
+{
+	return bytes % runtime->byte_align == 0;
+}
+
+static inline size_t snd_pcm_lib_buffer_bytes(snd_pcm_substream_t *substream)
+{
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	return frames_to_bytes(runtime, runtime->buffer_size);
+}
+
+static inline size_t snd_pcm_lib_period_bytes(snd_pcm_substream_t *substream)
+{
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	return frames_to_bytes(runtime, runtime->period_size);
+}
+
+/*
+ *  result is: 0 ... (boundary - 1)
+ */
+static inline snd_pcm_uframes_t snd_pcm_playback_avail(snd_pcm_runtime_t *runtime)
+{
+	snd_pcm_sframes_t avail = runtime->status->hw_ptr + runtime->buffer_size - runtime->control->appl_ptr;
+	if (avail < 0)
+		avail += runtime->boundary;
+	else if ((snd_pcm_uframes_t) avail >= runtime->boundary)
+		avail -= runtime->boundary;
+	return avail;
+}
+
+/*
+ *  result is: 0 ... (boundary - 1)
+ */
+static inline snd_pcm_uframes_t snd_pcm_capture_avail(snd_pcm_runtime_t *runtime)
+{
+	snd_pcm_sframes_t avail = runtime->status->hw_ptr - runtime->control->appl_ptr;
+	if (avail < 0)
+		avail += runtime->boundary;
+	return avail;
+}
+
+static inline snd_pcm_sframes_t snd_pcm_playback_hw_avail(snd_pcm_runtime_t *runtime)
+{
+	return runtime->buffer_size - snd_pcm_playback_avail(runtime);
+}
+
+static inline snd_pcm_sframes_t snd_pcm_capture_hw_avail(snd_pcm_runtime_t *runtime)
+{
+	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)
+{
+	substream->runtime->trigger_master = master;
+}
+
+static inline int hw_is_mask(int var)
+{
+	return var >= SNDRV_PCM_HW_PARAM_FIRST_MASK &&
+		var <= SNDRV_PCM_HW_PARAM_LAST_MASK;
+}
+
+static inline int hw_is_interval(int var)
+{
+	return var >= SNDRV_PCM_HW_PARAM_FIRST_INTERVAL &&
+		var <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL;
+}
+
+static inline snd_mask_t *hw_param_mask(snd_pcm_hw_params_t *params,
+				     snd_pcm_hw_param_t var)
+{
+	return &params->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK];
+}
+
+static inline snd_interval_t *hw_param_interval(snd_pcm_hw_params_t *params,
+					     snd_pcm_hw_param_t var)
+{
+	return &params->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
+}
+
+static inline const snd_mask_t *hw_param_mask_c(const snd_pcm_hw_params_t *params,
+					     snd_pcm_hw_param_t var)
+{
+	return (const snd_mask_t *)hw_param_mask((snd_pcm_hw_params_t*) params, var);
+}
+
+static inline const snd_interval_t *hw_param_interval_c(const snd_pcm_hw_params_t *params,
+						     snd_pcm_hw_param_t var)
+{
+	return (const snd_interval_t *)hw_param_interval((snd_pcm_hw_params_t*) params, var);
+}
+
+#define params_access(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_ACCESS))
+#define params_format(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_FORMAT))
+#define params_subformat(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_SUBFORMAT))
+#define params_channels(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_CHANNELS)->min
+#define params_rate(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_RATE)->min
+#define params_period_size(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min
+#define params_period_bytes(p) ((params_period_size(p)*snd_pcm_format_physical_width(params_format(p))*params_channels(p))/8)
+#define params_periods(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_PERIODS)->min
+#define params_buffer_size(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min
+#define params_buffer_bytes(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min
+#define params_tick_time(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_TICK_TIME)->min
+
+
+int snd_interval_refine(snd_interval_t *i, const snd_interval_t *v);
+void snd_interval_mul(const snd_interval_t *a, const snd_interval_t *b, snd_interval_t *c);
+void snd_interval_div(const snd_interval_t *a, const snd_interval_t *b, snd_interval_t *c);
+void snd_interval_muldivk(const snd_interval_t *a, const snd_interval_t *b, 
+			  unsigned int k, snd_interval_t *c);
+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_ratnum(snd_interval_t *i,
+			unsigned int rats_count, ratnum_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_param_min(snd_pcm_substream_t *substream, 
+			 snd_pcm_hw_params_t *params,
+			 snd_pcm_hw_param_t var,
+			 unsigned int val, int *dir);
+int snd_pcm_hw_param_max(snd_pcm_substream_t *substream, 
+			 snd_pcm_hw_params_t *params,
+			 snd_pcm_hw_param_t var,
+			 unsigned int val, int *dir);
+int snd_pcm_hw_param_setinteger(snd_pcm_substream_t *substream, 
+				snd_pcm_hw_params_t *params,
+				snd_pcm_hw_param_t var);
+int snd_pcm_hw_param_first(snd_pcm_substream_t *substream, 
+			   snd_pcm_hw_params_t *params,
+			   snd_pcm_hw_param_t var, int *dir);
+int snd_pcm_hw_param_last(snd_pcm_substream_t *substream, 
+			  snd_pcm_hw_params_t *params,
+			  snd_pcm_hw_param_t var, int *dir);
+int snd_pcm_hw_param_near(snd_pcm_substream_t *substream, 
+			  snd_pcm_hw_params_t *params,
+			  snd_pcm_hw_param_t var, 
+			  unsigned int val, int *dir);
+int snd_pcm_hw_param_set(snd_pcm_substream_t *pcm,
+			 snd_pcm_hw_params_t *params,
+			 snd_pcm_hw_param_t var,
+			 unsigned int val, int dir);
+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_hw_constraint_mask(snd_pcm_runtime_t *runtime, snd_pcm_hw_param_t var,
+			       u_int32_t mask);
+int snd_pcm_hw_constraint_mask64(snd_pcm_runtime_t *runtime, snd_pcm_hw_param_t var,
+				 u_int64_t mask);
+int snd_pcm_hw_constraint_minmax(snd_pcm_runtime_t *runtime, snd_pcm_hw_param_t var,
+				 unsigned int min, unsigned int max);
+int snd_pcm_hw_constraint_integer(snd_pcm_runtime_t *runtime, snd_pcm_hw_param_t var);
+int snd_pcm_hw_constraint_list(snd_pcm_runtime_t *runtime, 
+			       unsigned int cond,
+			       snd_pcm_hw_param_t var,
+			       snd_pcm_hw_constraint_list_t *l);
+int snd_pcm_hw_constraint_ratnums(snd_pcm_runtime_t *runtime, 
+				  unsigned int cond,
+				  snd_pcm_hw_param_t var,
+				  snd_pcm_hw_constraint_ratnums_t *r);
+int snd_pcm_hw_constraint_ratdens(snd_pcm_runtime_t *runtime, 
+				  unsigned int cond,
+				  snd_pcm_hw_param_t var,
+				  snd_pcm_hw_constraint_ratdens_t *r);
+int snd_pcm_hw_constraint_msbits(snd_pcm_runtime_t *runtime, 
+				 unsigned int cond,
+				 unsigned int width,
+				 unsigned int msbits);
+int snd_pcm_hw_constraint_step(snd_pcm_runtime_t *runtime,
+			       unsigned int cond,
+			       snd_pcm_hw_param_t var,
+			       unsigned long step);
+int snd_pcm_hw_constraint_pow2(snd_pcm_runtime_t *runtime,
+			       unsigned int cond,
+			       snd_pcm_hw_param_t var);
+int snd_pcm_hw_rule_add(snd_pcm_runtime_t *runtime,
+			unsigned int cond,
+			int var,
+			snd_pcm_hw_rule_func_t func, void *private,
+			int dep, ...);
+
+int snd_pcm_format_signed(snd_pcm_format_t format);
+int snd_pcm_format_unsigned(snd_pcm_format_t format);
+int snd_pcm_format_linear(snd_pcm_format_t format);
+int snd_pcm_format_little_endian(snd_pcm_format_t format);
+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 */
+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);
+const char *snd_pcm_format_name(snd_pcm_format_t format);
+
+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_lib_interleave_len(snd_pcm_substream_t *substream);
+int snd_pcm_lib_ioctl(snd_pcm_substream_t *substream,
+		      unsigned int cmd, void *arg);                      
+int snd_pcm_update_hw_ptr(snd_pcm_substream_t *substream);
+int snd_pcm_playback_xrun_check(snd_pcm_substream_t *substream);
+int snd_pcm_capture_xrun_check(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);
+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 __user *buf,
+				    snd_pcm_uframes_t frames);
+snd_pcm_sframes_t snd_pcm_lib_read(snd_pcm_substream_t *substream,
+				   void __user *buf, snd_pcm_uframes_t frames);
+snd_pcm_sframes_t snd_pcm_lib_writev(snd_pcm_substream_t *substream,
+				     void __user **bufs, snd_pcm_uframes_t frames);
+snd_pcm_sframes_t snd_pcm_lib_readv(snd_pcm_substream_t *substream,
+				    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
+ */
+
+void snd_pcm_timer_resolution_change(snd_pcm_substream_t *substream);
+void snd_pcm_timer_init(snd_pcm_substream_t * substream);
+void snd_pcm_timer_done(snd_pcm_substream_t * substream);
+
+/*
+ *  Memory
+ */
+
+int snd_pcm_lib_preallocate_free(snd_pcm_substream_t *substream);
+int snd_pcm_lib_preallocate_free_for_all(snd_pcm_t *pcm);
+int snd_pcm_lib_preallocate_pages(snd_pcm_substream_t *substream,
+				  int type, struct device *data,
+				  size_t size, size_t max);
+int snd_pcm_lib_preallocate_pages_for_all(snd_pcm_t *pcm,
+					  int type, void *data,
+					  size_t size, size_t max);
+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_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;
+}
+
+/*
+ *  Misc
+ */
+
+#define SNDRV_PCM_DEFAULT_CON_SPDIF	(IEC958_AES0_CON_EMPHASIS_NONE|\
+					 (IEC958_AES1_CON_ORIGINAL<<8)|\
+					 (IEC958_AES1_CON_PCM_CODER<<8)|\
+					 (IEC958_AES3_CON_FS_48000<<24))
+
+#endif /* __SOUND_PCM_H */