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512 lines
16 KiB
512 lines
16 KiB
#ifndef __SOUND_CORE_H
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#define __SOUND_CORE_H
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/*
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* Main header file for the ALSA driver
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* Copyright (c) 1994-2001 by Jaroslav Kysela <perex@suse.cz>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/sched.h> /* wake_up() */
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#include <asm/semaphore.h> /* struct semaphore */
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#include <linux/rwsem.h> /* struct rw_semaphore */
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#include <linux/workqueue.h> /* struct workqueue_struct */
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#include <linux/pm.h> /* pm_message_t */
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/* Typedef's */
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typedef struct timespec snd_timestamp_t;
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typedef struct sndrv_interval snd_interval_t;
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typedef enum sndrv_card_type snd_card_type;
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typedef struct sndrv_xferi snd_xferi_t;
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typedef struct sndrv_xfern snd_xfern_t;
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typedef struct sndrv_xferv snd_xferv_t;
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/* forward declarations */
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#ifdef CONFIG_PCI
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struct pci_dev;
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#endif
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#ifdef CONFIG_SBUS
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struct sbus_dev;
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#endif
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/* device allocation stuff */
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#define SNDRV_DEV_TYPE_RANGE_SIZE 0x1000
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typedef enum {
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SNDRV_DEV_TOPLEVEL = (0*SNDRV_DEV_TYPE_RANGE_SIZE),
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SNDRV_DEV_CONTROL,
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SNDRV_DEV_LOWLEVEL_PRE,
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SNDRV_DEV_LOWLEVEL_NORMAL = (1*SNDRV_DEV_TYPE_RANGE_SIZE),
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SNDRV_DEV_PCM,
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SNDRV_DEV_RAWMIDI,
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SNDRV_DEV_TIMER,
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SNDRV_DEV_SEQUENCER,
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SNDRV_DEV_HWDEP,
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SNDRV_DEV_INFO,
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SNDRV_DEV_BUS,
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SNDRV_DEV_CODEC,
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SNDRV_DEV_LOWLEVEL = (2*SNDRV_DEV_TYPE_RANGE_SIZE)
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} snd_device_type_t;
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typedef enum {
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SNDRV_DEV_BUILD,
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SNDRV_DEV_REGISTERED,
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SNDRV_DEV_DISCONNECTED
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} snd_device_state_t;
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typedef enum {
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SNDRV_DEV_CMD_PRE = 0,
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SNDRV_DEV_CMD_NORMAL = 1,
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SNDRV_DEV_CMD_POST = 2
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} snd_device_cmd_t;
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typedef struct _snd_card snd_card_t;
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typedef struct _snd_device snd_device_t;
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typedef int (snd_dev_free_t)(snd_device_t *device);
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typedef int (snd_dev_register_t)(snd_device_t *device);
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typedef int (snd_dev_disconnect_t)(snd_device_t *device);
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typedef int (snd_dev_unregister_t)(snd_device_t *device);
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typedef struct {
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snd_dev_free_t *dev_free;
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snd_dev_register_t *dev_register;
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snd_dev_disconnect_t *dev_disconnect;
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snd_dev_unregister_t *dev_unregister;
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} snd_device_ops_t;
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struct _snd_device {
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struct list_head list; /* list of registered devices */
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snd_card_t *card; /* card which holds this device */
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snd_device_state_t state; /* state of the device */
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snd_device_type_t type; /* device type */
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void *device_data; /* device structure */
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snd_device_ops_t *ops; /* operations */
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};
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#define snd_device(n) list_entry(n, snd_device_t, list)
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/* various typedefs */
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typedef struct snd_info_entry snd_info_entry_t;
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typedef struct _snd_pcm snd_pcm_t;
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typedef struct _snd_pcm_str snd_pcm_str_t;
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typedef struct _snd_pcm_substream snd_pcm_substream_t;
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typedef struct _snd_mixer snd_kmixer_t;
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typedef struct _snd_rawmidi snd_rawmidi_t;
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typedef struct _snd_ctl_file snd_ctl_file_t;
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typedef struct _snd_kcontrol snd_kcontrol_t;
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typedef struct _snd_timer snd_timer_t;
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typedef struct _snd_timer_instance snd_timer_instance_t;
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typedef struct _snd_hwdep snd_hwdep_t;
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#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
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typedef struct _snd_oss_mixer snd_mixer_oss_t;
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#endif
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/* monitor files for graceful shutdown (hotplug) */
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struct snd_monitor_file {
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struct file *file;
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struct snd_monitor_file *next;
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};
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struct snd_shutdown_f_ops; /* define it later in init.c */
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/* main structure for soundcard */
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struct _snd_card {
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int number; /* number of soundcard (index to
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snd_cards) */
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char id[16]; /* id string of this card */
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char driver[16]; /* driver name */
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char shortname[32]; /* short name of this soundcard */
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char longname[80]; /* name of this soundcard */
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char mixername[80]; /* mixer name */
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char components[80]; /* card components delimited with
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space */
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struct module *module; /* top-level module */
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void *private_data; /* private data for soundcard */
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void (*private_free) (snd_card_t *card); /* callback for freeing of
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private data */
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struct list_head devices; /* devices */
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unsigned int last_numid; /* last used numeric ID */
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struct rw_semaphore controls_rwsem; /* controls list lock */
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rwlock_t ctl_files_rwlock; /* ctl_files list lock */
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int controls_count; /* count of all controls */
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int user_ctl_count; /* count of all user controls */
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struct list_head controls; /* all controls for this card */
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struct list_head ctl_files; /* active control files */
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snd_info_entry_t *proc_root; /* root for soundcard specific files */
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snd_info_entry_t *proc_id; /* the card id */
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struct proc_dir_entry *proc_root_link; /* number link to real id */
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struct snd_monitor_file *files; /* all files associated to this card */
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struct snd_shutdown_f_ops *s_f_ops; /* file operations in the shutdown
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state */
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spinlock_t files_lock; /* lock the files for this card */
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int shutdown; /* this card is going down */
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wait_queue_head_t shutdown_sleep;
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struct work_struct free_workq; /* for free in workqueue */
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struct device *dev;
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#ifdef CONFIG_SND_GENERIC_DRIVER
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struct snd_generic_device *generic_dev;
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#endif
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#ifdef CONFIG_PM
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int (*pm_suspend)(snd_card_t *card, pm_message_t state);
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int (*pm_resume)(snd_card_t *card);
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void *pm_private_data;
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unsigned int power_state; /* power state */
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struct semaphore power_lock; /* power lock */
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wait_queue_head_t power_sleep;
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#endif
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#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
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snd_mixer_oss_t *mixer_oss;
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int mixer_oss_change_count;
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#endif
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};
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#ifdef CONFIG_PM
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static inline void snd_power_lock(snd_card_t *card)
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{
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down(&card->power_lock);
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}
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static inline void snd_power_unlock(snd_card_t *card)
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{
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up(&card->power_lock);
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}
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static inline unsigned int snd_power_get_state(snd_card_t *card)
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{
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return card->power_state;
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}
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static inline void snd_power_change_state(snd_card_t *card, unsigned int state)
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{
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card->power_state = state;
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wake_up(&card->power_sleep);
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}
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/* init.c */
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int snd_power_wait(snd_card_t *card, unsigned int power_state, struct file *file);
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int snd_card_set_pm_callback(snd_card_t *card,
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int (*suspend)(snd_card_t *, pm_message_t),
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int (*resume)(snd_card_t *),
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void *private_data);
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int snd_card_set_generic_pm_callback(snd_card_t *card,
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int (*suspend)(snd_card_t *, pm_message_t),
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int (*resume)(snd_card_t *),
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void *private_data);
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#define snd_card_set_isa_pm_callback(card,suspend,resume,data) \
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snd_card_set_generic_pm_callback(card, suspend, resume, data)
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struct pci_dev;
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int snd_card_pci_suspend(struct pci_dev *dev, pm_message_t state);
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int snd_card_pci_resume(struct pci_dev *dev);
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#define SND_PCI_PM_CALLBACKS \
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.suspend = snd_card_pci_suspend, .resume = snd_card_pci_resume
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#else /* ! CONFIG_PM */
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#define snd_power_lock(card) do { (void)(card); } while (0)
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#define snd_power_unlock(card) do { (void)(card); } while (0)
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static inline int snd_power_wait(snd_card_t *card, unsigned int state, struct file *file) { return 0; }
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#define snd_power_get_state(card) SNDRV_CTL_POWER_D0
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#define snd_power_change_state(card, state) do { (void)(card); } while (0)
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#define snd_card_set_pm_callback(card,suspend,resume,data)
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#define snd_card_set_generic_pm_callback(card,suspend,resume,data)
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#define snd_card_set_isa_pm_callback(card,suspend,resume,data)
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#define SND_PCI_PM_CALLBACKS
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#endif /* CONFIG_PM */
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struct _snd_minor {
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struct list_head list; /* list of all minors per card */
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int number; /* minor number */
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int device; /* device number */
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const char *comment; /* for /proc/asound/devices */
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struct file_operations *f_ops; /* file operations */
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char name[0]; /* device name (keep at the end of
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structure) */
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};
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typedef struct _snd_minor snd_minor_t;
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/* sound.c */
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extern int snd_ecards_limit;
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void snd_request_card(int card);
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int snd_register_device(int type, snd_card_t *card, int dev, snd_minor_t *reg, const char *name);
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int snd_unregister_device(int type, snd_card_t *card, int dev);
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#ifdef CONFIG_SND_OSSEMUL
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int snd_register_oss_device(int type, snd_card_t *card, int dev, snd_minor_t *reg, const char *name);
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int snd_unregister_oss_device(int type, snd_card_t *card, int dev);
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#endif
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int snd_minor_info_init(void);
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int snd_minor_info_done(void);
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/* sound_oss.c */
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#ifdef CONFIG_SND_OSSEMUL
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int snd_minor_info_oss_init(void);
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int snd_minor_info_oss_done(void);
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int snd_oss_init_module(void);
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#else
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#define snd_minor_info_oss_init() /*NOP*/
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#define snd_minor_info_oss_done() /*NOP*/
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#define snd_oss_init_module() 0
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#endif
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/* memory.c */
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#ifdef CONFIG_SND_DEBUG_MEMORY
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void snd_memory_init(void);
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void snd_memory_done(void);
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int snd_memory_info_init(void);
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int snd_memory_info_done(void);
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void *snd_hidden_kmalloc(size_t size, gfp_t flags);
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void *snd_hidden_kzalloc(size_t size, gfp_t flags);
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void *snd_hidden_kcalloc(size_t n, size_t size, gfp_t flags);
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void snd_hidden_kfree(const void *obj);
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void *snd_hidden_vmalloc(unsigned long size);
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void snd_hidden_vfree(void *obj);
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char *snd_hidden_kstrdup(const char *s, gfp_t flags);
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#define kmalloc(size, flags) snd_hidden_kmalloc(size, flags)
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#define kzalloc(size, flags) snd_hidden_kzalloc(size, flags)
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#define kcalloc(n, size, flags) snd_hidden_kcalloc(n, size, flags)
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#define kfree(obj) snd_hidden_kfree(obj)
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#define vmalloc(size) snd_hidden_vmalloc(size)
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#define vfree(obj) snd_hidden_vfree(obj)
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#define kmalloc_nocheck(size, flags) snd_wrapper_kmalloc(size, flags)
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#define vmalloc_nocheck(size) snd_wrapper_vmalloc(size)
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#define kfree_nocheck(obj) snd_wrapper_kfree(obj)
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#define vfree_nocheck(obj) snd_wrapper_vfree(obj)
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#define kstrdup(s, flags) snd_hidden_kstrdup(s, flags)
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#else
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#define snd_memory_init() /*NOP*/
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#define snd_memory_done() /*NOP*/
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#define snd_memory_info_init() /*NOP*/
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#define snd_memory_info_done() /*NOP*/
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#define kmalloc_nocheck(size, flags) kmalloc(size, flags)
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#define vmalloc_nocheck(size) vmalloc(size)
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#define kfree_nocheck(obj) kfree(obj)
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#define vfree_nocheck(obj) vfree(obj)
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#endif
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int copy_to_user_fromio(void __user *dst, const volatile void __iomem *src, size_t count);
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int copy_from_user_toio(volatile void __iomem *dst, const void __user *src, size_t count);
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/* init.c */
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extern unsigned int snd_cards_lock;
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extern snd_card_t *snd_cards[SNDRV_CARDS];
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extern rwlock_t snd_card_rwlock;
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#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
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#define SND_MIXER_OSS_NOTIFY_REGISTER 0
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#define SND_MIXER_OSS_NOTIFY_DISCONNECT 1
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#define SND_MIXER_OSS_NOTIFY_FREE 2
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extern int (*snd_mixer_oss_notify_callback)(snd_card_t *card, int cmd);
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#endif
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snd_card_t *snd_card_new(int idx, const char *id,
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struct module *module, int extra_size);
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int snd_card_disconnect(snd_card_t *card);
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int snd_card_free(snd_card_t *card);
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int snd_card_free_in_thread(snd_card_t *card);
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int snd_card_register(snd_card_t *card);
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int snd_card_info_init(void);
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int snd_card_info_done(void);
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int snd_component_add(snd_card_t *card, const char *component);
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int snd_card_file_add(snd_card_t *card, struct file *file);
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int snd_card_file_remove(snd_card_t *card, struct file *file);
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#ifndef snd_card_set_dev
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#define snd_card_set_dev(card,devptr) ((card)->dev = (devptr))
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#endif
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/* register a generic device (for ISA, etc) */
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int snd_card_set_generic_dev(snd_card_t *card);
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/* device.c */
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int snd_device_new(snd_card_t *card, snd_device_type_t type,
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void *device_data, snd_device_ops_t *ops);
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int snd_device_register(snd_card_t *card, void *device_data);
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int snd_device_register_all(snd_card_t *card);
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int snd_device_disconnect(snd_card_t *card, void *device_data);
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int snd_device_disconnect_all(snd_card_t *card);
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int snd_device_free(snd_card_t *card, void *device_data);
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int snd_device_free_all(snd_card_t *card, snd_device_cmd_t cmd);
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/* isadma.c */
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#ifdef CONFIG_ISA_DMA_API
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#define DMA_MODE_NO_ENABLE 0x0100
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void snd_dma_program(unsigned long dma, unsigned long addr, unsigned int size, unsigned short mode);
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void snd_dma_disable(unsigned long dma);
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unsigned int snd_dma_pointer(unsigned long dma, unsigned int size);
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#endif
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/* misc.c */
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int snd_task_name(struct task_struct *task, char *name, size_t size);
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#ifdef CONFIG_SND_VERBOSE_PRINTK
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void snd_verbose_printk(const char *file, int line, const char *format, ...)
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__attribute__ ((format (printf, 3, 4)));
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#endif
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#if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_VERBOSE_PRINTK)
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void snd_verbose_printd(const char *file, int line, const char *format, ...)
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__attribute__ ((format (printf, 3, 4)));
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#endif
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/* --- */
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#ifdef CONFIG_SND_VERBOSE_PRINTK
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/**
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* snd_printk - printk wrapper
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* @fmt: format string
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*
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* Works like print() but prints the file and the line of the caller
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* when configured with CONFIG_SND_VERBOSE_PRINTK.
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*/
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#define snd_printk(fmt, args...) \
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snd_verbose_printk(__FILE__, __LINE__, fmt ,##args)
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#else
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#define snd_printk(fmt, args...) \
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printk(fmt ,##args)
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#endif
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#ifdef CONFIG_SND_DEBUG
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#define __ASTRING__(x) #x
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#ifdef CONFIG_SND_VERBOSE_PRINTK
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/**
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* snd_printd - debug printk
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* @format: format string
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*
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* Compiled only when Works like snd_printk() for debugging purpose.
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* Ignored when CONFIG_SND_DEBUG is not set.
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*/
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#define snd_printd(fmt, args...) \
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snd_verbose_printd(__FILE__, __LINE__, fmt ,##args)
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#else
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#define snd_printd(fmt, args...) \
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printk(fmt ,##args)
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#endif
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/**
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* snd_assert - run-time assertion macro
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* @expr: expression
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* @args...: the action
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*
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* This macro checks the expression in run-time and invokes the commands
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* given in the rest arguments if the assertion is failed.
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* When CONFIG_SND_DEBUG is not set, the expression is executed but
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* not checked.
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*/
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#define snd_assert(expr, args...) do {\
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if (unlikely(!(expr))) { \
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snd_printk(KERN_ERR "BUG? (%s) (called from %p)\n", __ASTRING__(expr), __builtin_return_address(0));\
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args;\
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}\
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} while (0)
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/**
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* snd_runtime_check - run-time assertion macro
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* @expr: expression
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* @args...: the action
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*
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* This macro checks the expression in run-time and invokes the commands
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* given in the rest arguments if the assertion is failed.
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* Unlike snd_assert(), the action commands are executed even if
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* CONFIG_SND_DEBUG is not set but without any error messages.
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*/
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#define snd_runtime_check(expr, args...) do {\
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if (unlikely(!(expr))) { \
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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 */
|
|
|