| #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 */ |
| |
| /* 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_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; |
| #ifdef CONFIG_SND_GENERIC_PM |
| struct snd_generic_device *pm_dev; /* for ISA */ |
| #endif |
| #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); |
| } |
| |
| int snd_power_wait(snd_card_t *card, unsigned int power_state, struct file *file); |
| |
| 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); |
| } |
| 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 */ |
| |
| /* device.c */ |
| |
| 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, 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); |
| char *snd_hidden_kstrdup(const char *s, int flags); |
| #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) |
| #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 |
| |
| /* 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(KERN_ERR "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(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 */ |