core.h

来自「Linux Kernel 2.6.9 for OMAP1710」· C头文件 代码 · 共 490 行 · 第 1/2 页

typedef struct _snd_minor snd_minor_t;

/* sound.c */

extern int snd_ecards_limit;

void snd_request_card(int card);

int snd_register_device(int type, snd_card_t *card, int dev, snd_minor_t *reg, const char *name);
int snd_unregister_device(int type, snd_card_t *card, int dev);

#ifdef CONFIG_SND_OSSEMUL
int snd_register_oss_device(int type, snd_card_t *card, int dev, snd_minor_t *reg, const char *name);
int snd_unregister_oss_device(int type, snd_card_t *card, int dev);
#endif

int snd_minor_info_init(void);
int snd_minor_info_done(void);

/* sound_oss.c */

#ifdef CONFIG_SND_OSSEMUL
int snd_minor_info_oss_init(void);
int snd_minor_info_oss_done(void);
int snd_oss_init_module(void);
#else
#define snd_minor_info_oss_init() /*NOP*/
#define snd_minor_info_oss_done() /*NOP*/
#define snd_oss_init_module() 0
#endif

/* memory.c */

#ifdef CONFIG_SND_DEBUG_MEMORY
void snd_memory_init(void);
void snd_memory_done(void);
int snd_memory_info_init(void);
int snd_memory_info_done(void);
void *snd_hidden_kmalloc(size_t size, int flags);
void *snd_hidden_kcalloc(size_t n, size_t size, int flags);
void snd_hidden_kfree(const void *obj);
void *snd_hidden_vmalloc(unsigned long size);
void snd_hidden_vfree(void *obj);
#define kmalloc(size, flags) snd_hidden_kmalloc(size, flags)
#define kcalloc(n, size, flags) snd_hidden_kcalloc(n, size, flags)
#define kfree(obj) snd_hidden_kfree(obj)
#define vmalloc(size) snd_hidden_vmalloc(size)
#define vfree(obj) snd_hidden_vfree(obj)
#define kmalloc_nocheck(size, flags) snd_wrapper_kmalloc(size, flags)
#define vmalloc_nocheck(size) snd_wrapper_vmalloc(size)
#define kfree_nocheck(obj) snd_wrapper_kfree(obj)
#define vfree_nocheck(obj) snd_wrapper_vfree(obj)
#else
#define snd_memory_init() /*NOP*/
#define snd_memory_done() /*NOP*/
#define snd_memory_info_init() /*NOP*/
#define snd_memory_info_done() /*NOP*/
#define kmalloc_nocheck(size, flags) kmalloc(size, flags)
#define vmalloc_nocheck(size) vmalloc(size)
#define kfree_nocheck(obj) kfree(obj)
#define vfree_nocheck(obj) vfree(obj)
#endif
char *snd_kmalloc_strdup(const char *string, int flags);
int copy_to_user_fromio(void __user *dst, unsigned long src, size_t count);
int copy_from_user_toio(unsigned long dst, const void __user *src, size_t count);

/* init.c */

extern int snd_cards_count;
extern unsigned int snd_cards_lock;
extern snd_card_t *snd_cards[SNDRV_CARDS];
extern rwlock_t snd_card_rwlock;
#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
#define SND_MIXER_OSS_NOTIFY_REGISTER	0
#define SND_MIXER_OSS_NOTIFY_DISCONNECT	1
#define SND_MIXER_OSS_NOTIFY_FREE	2
extern int (*snd_mixer_oss_notify_callback)(snd_card_t *card, int cmd);
#endif

snd_card_t *snd_card_new(int idx, const char *id,
			 struct module *module, int extra_size);
int snd_card_disconnect(snd_card_t *card);
int snd_card_free(snd_card_t *card);
int snd_card_free_in_thread(snd_card_t *card);
int snd_card_register(snd_card_t *card);
int snd_card_info_init(void);
int snd_card_info_done(void);
int snd_component_add(snd_card_t *card, const char *component);
int snd_card_file_add(snd_card_t *card, struct file *file);
int snd_card_file_remove(snd_card_t *card, struct file *file);

#ifndef snd_card_set_dev
#define snd_card_set_dev(card,devptr) ((card)->dev = (devptr))
#endif

/* device.c */

int snd_device_new(snd_card_t *card, snd_device_type_t type,
		   void *device_data, snd_device_ops_t *ops);
int snd_device_register(snd_card_t *card, void *device_data);
int snd_device_register_all(snd_card_t *card);
int snd_device_disconnect(snd_card_t *card, void *device_data);
int snd_device_disconnect_all(snd_card_t *card);
int snd_device_free(snd_card_t *card, void *device_data);
int snd_device_free_all(snd_card_t *card, snd_device_cmd_t cmd);

/* isadma.c */

#define DMA_MODE_NO_ENABLE	0x0100

void snd_dma_program(unsigned long dma, unsigned long addr, unsigned int size, unsigned short mode);
void snd_dma_disable(unsigned long dma);
unsigned int snd_dma_pointer(unsigned long dma, unsigned int size);

/* misc.c */

int snd_task_name(struct task_struct *task, char *name, size_t size);
#ifdef CONFIG_SND_VERBOSE_PRINTK
void snd_verbose_printk(const char *file, int line, const char *format, ...)
     __attribute__ ((format (printf, 3, 4)));
#endif
#if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_VERBOSE_PRINTK)
void snd_verbose_printd(const char *file, int line, const char *format, ...)
     __attribute__ ((format (printf, 3, 4)));
#endif

/* --- */

#ifdef CONFIG_SND_VERBOSE_PRINTK
/**
 * snd_printk - printk wrapper
 * @fmt: format string
 *
 * Works like print() but prints the file and the line of the caller
 * when configured with CONFIG_SND_VERBOSE_PRINTK.
 */
#define snd_printk(fmt, args...) \
	snd_verbose_printk(__FILE__, __LINE__, fmt ,##args)
#else
#define snd_printk(fmt, args...) \
	printk(fmt ,##args)
#endif

#ifdef CONFIG_SND_DEBUG

#define __ASTRING__(x) #x

#ifdef CONFIG_SND_VERBOSE_PRINTK
/**
 * snd_printd - debug printk
 * @format: format string
 *
 * Compiled only when Works like snd_printk() for debugging purpose.
 * Ignored when CONFIG_SND_DEBUG is not set.
 */
#define snd_printd(fmt, args...) \
	snd_verbose_printd(__FILE__, __LINE__, fmt ,##args)
#else
#define snd_printd(fmt, args...) \
	printk(fmt ,##args)
#endif
/**
 * snd_assert - run-time assersion macro
 * @expr: expression
 * @args...: the action
 *
 * This macro checks the expression in run-time and invokes the commands
 * given in the rest arguments if the assertion is failed.
 * When CONFIG_SND_DEBUG is not set, the expression is executed but
 * not checked.
 */
#define snd_assert(expr, args...) do {\
	if (unlikely(!(expr))) {				\
		snd_printk("BUG? (%s) (called from %p)\n", __ASTRING__(expr), __builtin_return_address(0));\
		args;\
	}\
} while (0)
/**
 * snd_runtime_check - run-time assersion macro
 * @expr: expression
 * @args...: the action
 *
 * This macro checks the expression in run-time and invokes the commands
 * given in the rest arguments if the assertion is failed.
 * Unlike snd_assert(), the action commands are executed even if
 * CONFIG_SND_DEBUG is not set but without any error messages.
 */
#define snd_runtime_check(expr, args...) do {\
	if (unlikely(!(expr))) {				\
		snd_printk("ERROR (%s) (called from %p)\n", __ASTRING__(expr), __builtin_return_address(0));\
		args;\
	}\
} while (0)

#else /* !CONFIG_SND_DEBUG */

#define snd_printd(fmt, args...)	/* nothing */
#define snd_assert(expr, args...)	(void)(expr)
#define snd_runtime_check(expr, args...) do { if (!(expr)) { args; } } while (0)

#endif /* CONFIG_SND_DEBUG */

#ifdef CONFIG_SND_DEBUG_DETECT
/**
 * snd_printdd - debug printk
 * @format: format string
 *
 * Compiled only when Works like snd_printk() for debugging purpose.
 * Ignored when CONFIG_SND_DEBUG_DETECT is not set.
 */
#define snd_printdd(format, args...) snd_printk(format, ##args)
#else
#define snd_printdd(format, args...) /* nothing */
#endif

#define snd_BUG() snd_assert(0, )


static inline void snd_timestamp_now(struct timespec *tstamp, int timespec)
{
	struct timeval val;
	/* FIXME: use a linear time source */
	do_gettimeofday(&val);
	tstamp->tv_sec = val.tv_sec;
	tstamp->tv_nsec = val.tv_usec;
	if (timespec)
		tstamp->tv_nsec *= 1000L;
}

static inline void snd_timestamp_zero(struct timespec *tstamp)
{
	tstamp->tv_sec = 0;
	tstamp->tv_nsec = 0;
}

static inline int snd_timestamp_null(struct timespec *tstamp)
{
	return tstamp->tv_sec == 0 && tstamp->tv_nsec == 0;
}

#define SNDRV_OSS_VERSION         ((3<<16)|(8<<8)|(1<<4)|(0))	/* 3.8.1a */

#endif /* __SOUND_CORE_H */