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kernel-ark/include/sound/core.h
Al Viro dd0fc66fb3 [PATCH] gfp flags annotations - part 1 
- added typedef unsigned int __nocast gfp_t;

 - replaced __nocast uses for gfp flags with gfp_t - it gives exactly
   the same warnings as far as sparse is concerned, doesn't change
   generated code (from gcc point of view we replaced unsigned int with
   typedef) and documents what's going on far better.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-08 15:00:57 -07:00

513 lines
16 KiB
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#ifndef __SOUND_CORE_H
#define __SOUND_CORE_H
/*
* Main header file for the ALSA driver
* Copyright (c) 1994-2001 by Jaroslav Kysela <perex@suse.cz>
*
*
* 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 <linux/sched.h> /* wake_up() */
#include <asm/semaphore.h> /* struct semaphore */
#include <linux/rwsem.h> /* struct rw_semaphore */
#include <linux/workqueue.h> /* struct workqueue_struct */
#include <linux/pm.h> /* pm_message_t */
/* Typedef's */
typedef struct timespec snd_timestamp_t;
typedef struct sndrv_interval snd_interval_t;
typedef enum sndrv_card_type snd_card_type;
typedef struct sndrv_xferi snd_xferi_t;
typedef struct sndrv_xfern snd_xfern_t;
typedef struct sndrv_xferv snd_xferv_t;
/* forward declarations */
#ifdef CONFIG_PCI
struct pci_dev;
#endif
#ifdef CONFIG_SBUS
struct sbus_dev;
#endif
/* device allocation stuff */
#define SNDRV_DEV_TYPE_RANGE_SIZE 0x1000
typedef enum {
SNDRV_DEV_TOPLEVEL = (0*SNDRV_DEV_TYPE_RANGE_SIZE),
SNDRV_DEV_CONTROL,
SNDRV_DEV_LOWLEVEL_PRE,
SNDRV_DEV_LOWLEVEL_NORMAL = (1*SNDRV_DEV_TYPE_RANGE_SIZE),
SNDRV_DEV_PCM,
SNDRV_DEV_RAWMIDI,
SNDRV_DEV_TIMER,
SNDRV_DEV_SEQUENCER,
SNDRV_DEV_HWDEP,
SNDRV_DEV_INFO,
SNDRV_DEV_BUS,
SNDRV_DEV_CODEC,
SNDRV_DEV_LOWLEVEL = (2*SNDRV_DEV_TYPE_RANGE_SIZE)
} snd_device_type_t;
typedef enum {
SNDRV_DEV_BUILD,
SNDRV_DEV_REGISTERED,
SNDRV_DEV_DISCONNECTED
} snd_device_state_t;
typedef enum {
SNDRV_DEV_CMD_PRE = 0,
SNDRV_DEV_CMD_NORMAL = 1,
SNDRV_DEV_CMD_POST = 2
} snd_device_cmd_t;
typedef struct _snd_card snd_card_t;
typedef struct _snd_device snd_device_t;
typedef int (snd_dev_free_t)(snd_device_t *device);
typedef int (snd_dev_register_t)(snd_device_t *device);
typedef int (snd_dev_disconnect_t)(snd_device_t *device);
typedef int (snd_dev_unregister_t)(snd_device_t *device);
typedef struct {
snd_dev_free_t *dev_free;
snd_dev_register_t *dev_register;
snd_dev_disconnect_t *dev_disconnect;
snd_dev_unregister_t *dev_unregister;
} snd_device_ops_t;
struct _snd_device {
struct list_head list; /* list of registered devices */
snd_card_t *card; /* card which holds this device */
snd_device_state_t state; /* state of the device */
snd_device_type_t type; /* device type */
void *device_data; /* device structure */
snd_device_ops_t *ops; /* operations */
};
#define snd_device(n) list_entry(n, snd_device_t, list)
/* various typedefs */
typedef struct snd_info_entry snd_info_entry_t;
typedef struct _snd_pcm snd_pcm_t;
typedef struct _snd_pcm_str snd_pcm_str_t;
typedef struct _snd_pcm_substream snd_pcm_substream_t;
typedef struct _snd_mixer snd_kmixer_t;
typedef struct _snd_rawmidi snd_rawmidi_t;
typedef struct _snd_ctl_file snd_ctl_file_t;
typedef struct _snd_kcontrol snd_kcontrol_t;
typedef struct _snd_timer snd_timer_t;
typedef struct _snd_timer_instance snd_timer_instance_t;
typedef struct _snd_hwdep snd_hwdep_t;
#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
typedef struct _snd_oss_mixer snd_mixer_oss_t;
#endif
/* monitor files for graceful shutdown (hotplug) */
struct snd_monitor_file {
struct file *file;
struct snd_monitor_file *next;
};
struct snd_shutdown_f_ops; /* define it later in init.c */
/* main structure for soundcard */
struct _snd_card {
int number; /* number of soundcard (index to
snd_cards) */
char id[16]; /* id string of this card */
char driver[16]; /* driver name */
char shortname[32]; /* short name of this soundcard */
char longname[80]; /* name of this soundcard */
char mixername[80]; /* mixer name */
char components[80]; /* card components delimited with
space */
struct module *module; /* top-level module */
void *private_data; /* private data for soundcard */
void (*private_free) (snd_card_t *card); /* callback for freeing of
private data */
struct list_head devices; /* devices */
unsigned int last_numid; /* last used numeric ID */
struct rw_semaphore controls_rwsem; /* controls list lock */
rwlock_t ctl_files_rwlock; /* ctl_files list lock */
int controls_count; /* count of all controls */
int user_ctl_count; /* count of all user controls */
struct list_head controls; /* all controls for this card */
struct list_head ctl_files; /* active control files */
snd_info_entry_t *proc_root; /* root for soundcard specific files */
snd_info_entry_t *proc_id; /* the card id */
struct proc_dir_entry *proc_root_link; /* number link to real id */
struct snd_monitor_file *files; /* all files associated to this card */
struct snd_shutdown_f_ops *s_f_ops; /* file operations in the shutdown
state */
spinlock_t files_lock; /* lock the files for this card */
int shutdown; /* this card is going down */
wait_queue_head_t shutdown_sleep;
struct work_struct free_workq; /* for free in workqueue */
struct device *dev;
#ifdef CONFIG_SND_GENERIC_DRIVER
struct snd_generic_device *generic_dev;
#endif
#ifdef CONFIG_PM
int (*pm_suspend)(snd_card_t *card, pm_message_t state);
int (*pm_resume)(snd_card_t *card);
void *pm_private_data;
unsigned int power_state; /* power state */
struct semaphore power_lock; /* power lock */
wait_queue_head_t power_sleep;
#endif
#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
snd_mixer_oss_t *mixer_oss;
int mixer_oss_change_count;
#endif
};
#ifdef CONFIG_PM
static inline void snd_power_lock(snd_card_t *card)
{
down(&card->power_lock);
}
static inline void snd_power_unlock(snd_card_t *card)
{
up(&card->power_lock);
}
static inline unsigned int snd_power_get_state(snd_card_t *card)
{
return card->power_state;
}
static inline void snd_power_change_state(snd_card_t *card, unsigned int state)
{
card->power_state = state;
wake_up(&card->power_sleep);
}
/* init.c */
int snd_power_wait(snd_card_t *card, unsigned int power_state, struct file *file);
int snd_card_set_pm_callback(snd_card_t *card,
int (*suspend)(snd_card_t *, pm_message_t),
int (*resume)(snd_card_t *),
void *private_data);
int snd_card_set_generic_pm_callback(snd_card_t *card,
int (*suspend)(snd_card_t *, pm_message_t),
int (*resume)(snd_card_t *),
void *private_data);
#define snd_card_set_isa_pm_callback(card,suspend,resume,data) \
snd_card_set_generic_pm_callback(card, suspend, resume, data)
struct pci_dev;
int snd_card_pci_suspend(struct pci_dev *dev, pm_message_t state);
int snd_card_pci_resume(struct pci_dev *dev);
#define SND_PCI_PM_CALLBACKS \
.suspend = snd_card_pci_suspend, .resume = snd_card_pci_resume
#else /* ! CONFIG_PM */
#define snd_power_lock(card) do { (void)(card); } while (0)
#define snd_power_unlock(card) do { (void)(card); } while (0)
static inline int snd_power_wait(snd_card_t *card, unsigned int state, struct file *file) { return 0; }
#define snd_power_get_state(card) SNDRV_CTL_POWER_D0
#define snd_power_change_state(card, state) do { (void)(card); } while (0)
#define snd_card_set_pm_callback(card,suspend,resume,data)
#define snd_card_set_generic_pm_callback(card,suspend,resume,data)
#define snd_card_set_isa_pm_callback(card,suspend,resume,data)
#define SND_PCI_PM_CALLBACKS
#endif /* CONFIG_PM */
struct _snd_minor {
struct list_head list; /* list of all minors per card */
int number; /* minor number */
int device; /* device number */
const char *comment; /* for /proc/asound/devices */
struct file_operations *f_ops; /* file operations */
char name[0]; /* device name (keep at the end of
structure) */
};
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, gfp_t flags);
void *snd_hidden_kzalloc(size_t size, gfp_t flags);
void *snd_hidden_kcalloc(size_t n, size_t size, gfp_t flags);
void snd_hidden_kfree(const void *obj);
void *snd_hidden_vmalloc(unsigned long size);
void snd_hidden_vfree(void *obj);
char *snd_hidden_kstrdup(const char *s, gfp_t flags);
#define kmalloc(size, flags) snd_hidden_kmalloc(size, flags)
#define kzalloc(size, flags) snd_hidden_kzalloc(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)
#define kstrdup(s, flags) snd_hidden_kstrdup(s, flags)
#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
int copy_to_user_fromio(void __user *dst, const volatile void __iomem *src, size_t count);
int copy_from_user_toio(volatile void __iomem *dst, const void __user *src, size_t count);
/* init.c */
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
/* register a generic device (for ISA, etc) */
int snd_card_set_generic_dev(snd_card_t *card);
/* 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 */
#ifdef CONFIG_ISA_DMA_API
#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);
#endif
/* 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 assertion 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(KERN_ERR "BUG? (%s) (called from %p)\n", __ASTRING__(expr), __builtin_return_address(0));\
args;\
}\
} while (0)
/**
* snd_runtime_check - run-time assertion 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(KERN_ERR "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 */
/* for easier backward-porting */
#if defined(CONFIG_GAMEPORT) || defined(CONFIG_GAMEPORT_MODULE)
#ifndef gameport_set_dev_parent
#define gameport_set_dev_parent(gp,xdev) ((gp)->dev.parent = (xdev))
#define gameport_set_port_data(gp,r) ((gp)->port_data = (r))
#define gameport_get_port_data(gp) (gp)->port_data
#endif
#endif
#endif /* __SOUND_CORE_H */
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