X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=sound%2Fcore%2Fsound_oss.c;h=9055c6de95875d4b199dce59b0db0b1fe5737ed6;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=de39d212bc15189bbb1236f9519993b608ed8d15;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git diff --git a/sound/core/sound_oss.c b/sound/core/sound_oss.c index de39d212b..9055c6de9 100644 --- a/sound/core/sound_oss.c +++ b/sound/core/sound_oss.c @@ -34,27 +34,31 @@ #include #include #include +#include -#define SNDRV_OS_MINORS 256 +#define SNDRV_OSS_MINORS 128 -static struct list_head snd_oss_minors_hash[SNDRV_CARDS]; +static struct snd_minor *snd_oss_minors[SNDRV_OSS_MINORS]; +static DEFINE_MUTEX(sound_oss_mutex); -static DECLARE_MUTEX(sound_oss_mutex); - -static snd_minor_t *snd_oss_minor_search(int minor) +void *snd_lookup_oss_minor_data(unsigned int minor, int type) { - struct list_head *list; - snd_minor_t *mptr; + struct snd_minor *mreg; + void *private_data; - list_for_each(list, &snd_oss_minors_hash[SNDRV_MINOR_OSS_CARD(minor)]) { - mptr = list_entry(list, snd_minor_t, list); - if (mptr->number == minor) - return mptr; - } - return NULL; + if (minor >= ARRAY_SIZE(snd_oss_minors)) + return NULL; + mutex_lock(&sound_oss_mutex); + mreg = snd_oss_minors[minor]; + if (mreg && mreg->type == type) + private_data = mreg->private_data; + else + private_data = NULL; + mutex_unlock(&sound_oss_mutex); + return private_data; } -static int snd_oss_kernel_minor(int type, snd_card_t * card, int dev) +static int snd_oss_kernel_minor(int type, struct snd_card *card, int dev) { int minor; @@ -86,29 +90,36 @@ static int snd_oss_kernel_minor(int type, snd_card_t * card, int dev) default: return -EINVAL; } - snd_assert(minor >= 0 && minor < SNDRV_OS_MINORS, return -EINVAL); + snd_assert(minor >= 0 && minor < SNDRV_OSS_MINORS, return -EINVAL); return minor; } -int snd_register_oss_device(int type, snd_card_t * card, int dev, snd_minor_t * reg, const char *name) +int snd_register_oss_device(int type, struct snd_card *card, int dev, + const struct file_operations *f_ops, void *private_data, + const char *name) { int minor = snd_oss_kernel_minor(type, card, dev); int minor_unit; - snd_minor_t *preg; + struct snd_minor *preg; int cidx = SNDRV_MINOR_OSS_CARD(minor); int track2 = -1; int register1 = -1, register2 = -1; + struct device *carddev = NULL; + if (card && card->number >= 8) + return 0; /* ignore silently */ if (minor < 0) return minor; - preg = (snd_minor_t *)kmalloc(sizeof(snd_minor_t), GFP_KERNEL); + preg = kmalloc(sizeof(struct snd_minor), GFP_KERNEL); if (preg == NULL) return -ENOMEM; - *preg = *reg; - preg->number = minor; + preg->type = type; + preg->card = card ? card->number : -1; preg->device = dev; - down(&sound_oss_mutex); - list_add_tail(&preg->list, &snd_oss_minors_hash[cidx]); + preg->f_ops = f_ops; + preg->private_data = private_data; + mutex_lock(&sound_oss_mutex); + snd_oss_minors[minor] = preg; minor_unit = SNDRV_MINOR_OSS_DEVICE(minor); switch (minor_unit) { case SNDRV_MINOR_OSS_PCM: @@ -121,15 +132,19 @@ int snd_register_oss_device(int type, snd_card_t * card, int dev, snd_minor_t * track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_DMMIDI1); break; } - register1 = register_sound_special(reg->f_ops, minor); + if (card) + carddev = card->dev; + register1 = register_sound_special_device(f_ops, minor, carddev); if (register1 != minor) goto __end; if (track2 >= 0) { - register2 = register_sound_special(reg->f_ops, track2); + register2 = register_sound_special_device(f_ops, track2, + carddev); if (register2 != track2) goto __end; + snd_oss_minors[track2] = preg; } - up(&sound_oss_mutex); + mutex_unlock(&sound_oss_mutex); return 0; __end: @@ -137,25 +152,27 @@ int snd_register_oss_device(int type, snd_card_t * card, int dev, snd_minor_t * unregister_sound_special(register2); if (register1 >= 0) unregister_sound_special(register1); - list_del(&preg->list); - up(&sound_oss_mutex); + snd_oss_minors[minor] = NULL; + mutex_unlock(&sound_oss_mutex); kfree(preg); return -EBUSY; } -int snd_unregister_oss_device(int type, snd_card_t * card, int dev) +int snd_unregister_oss_device(int type, struct snd_card *card, int dev) { int minor = snd_oss_kernel_minor(type, card, dev); int cidx = SNDRV_MINOR_OSS_CARD(minor); int track2 = -1; - snd_minor_t *mptr; + struct snd_minor *mptr; + if (card && card->number >= 8) + return 0; if (minor < 0) return minor; - down(&sound_oss_mutex); - mptr = snd_oss_minor_search(minor); + mutex_lock(&sound_oss_mutex); + mptr = snd_oss_minors[minor]; if (mptr == NULL) { - up(&sound_oss_mutex); + mutex_unlock(&sound_oss_mutex); return -ENOENT; } unregister_sound_special(minor); @@ -170,10 +187,12 @@ int snd_unregister_oss_device(int type, snd_card_t * card, int dev) track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_DMMIDI1); break; } - if (track2 >= 0) + if (track2 >= 0) { unregister_sound_special(track2); - list_del(&mptr->list); - up(&sound_oss_mutex); + snd_oss_minors[track2] = NULL; + } + snd_oss_minors[minor] = NULL; + mutex_unlock(&sound_oss_mutex); kfree(mptr); return 0; } @@ -184,36 +203,52 @@ int snd_unregister_oss_device(int type, snd_card_t * card, int dev) #ifdef CONFIG_PROC_FS -static snd_info_entry_t *snd_minor_info_oss_entry = NULL; +static struct snd_info_entry *snd_minor_info_oss_entry = NULL; -static void snd_minor_info_oss_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer) +static const char *snd_oss_device_type_name(int type) { - int card, dev; - struct list_head *list; - snd_minor_t *mptr; - - down(&sound_oss_mutex); - for (card = 0; card < SNDRV_CARDS; card++) { - list_for_each(list, &snd_oss_minors_hash[card]) { - mptr = list_entry(list, snd_minor_t, list); - dev = SNDRV_MINOR_OSS_DEVICE(mptr->number); - if (dev != SNDRV_MINOR_OSS_SNDSTAT && - dev != SNDRV_MINOR_OSS_SEQUENCER && - dev != SNDRV_MINOR_OSS_MUSIC) - snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n", mptr->number, card, dev, mptr->comment); - else - snd_iprintf(buffer, "%3i: : %s\n", mptr->number, mptr->comment); - } + switch (type) { + case SNDRV_OSS_DEVICE_TYPE_MIXER: + return "mixer"; + case SNDRV_OSS_DEVICE_TYPE_SEQUENCER: + case SNDRV_OSS_DEVICE_TYPE_MUSIC: + return "sequencer"; + case SNDRV_OSS_DEVICE_TYPE_PCM: + return "digital audio"; + case SNDRV_OSS_DEVICE_TYPE_MIDI: + return "raw midi"; + case SNDRV_OSS_DEVICE_TYPE_DMFM: + return "hardware dependent"; + default: + return "?"; } - up(&sound_oss_mutex); } -#endif /* CONFIG_PROC_FS */ +static void snd_minor_info_oss_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + int minor; + struct snd_minor *mptr; + + mutex_lock(&sound_oss_mutex); + for (minor = 0; minor < SNDRV_OSS_MINORS; ++minor) { + if (!(mptr = snd_oss_minors[minor])) + continue; + if (mptr->card >= 0) + snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n", minor, + mptr->card, mptr->device, + snd_oss_device_type_name(mptr->type)); + else + snd_iprintf(buffer, "%3i: : %s\n", minor, + snd_oss_device_type_name(mptr->type)); + } + mutex_unlock(&sound_oss_mutex); +} + int __init snd_minor_info_oss_init(void) { -#ifdef CONFIG_PROC_FS - snd_info_entry_t *entry; + struct snd_info_entry *entry; entry = snd_info_create_module_entry(THIS_MODULE, "devices", snd_oss_root); if (entry) { @@ -225,26 +260,15 @@ int __init snd_minor_info_oss_init(void) } } snd_minor_info_oss_entry = entry; -#endif return 0; } int __exit snd_minor_info_oss_done(void) { -#ifdef CONFIG_PROC_FS if (snd_minor_info_oss_entry) snd_info_unregister(snd_minor_info_oss_entry); -#endif - return 0; -} - -int __init snd_oss_init_module(void) -{ - int card; - - for (card = 0; card < SNDRV_CARDS; card++) - INIT_LIST_HEAD(&snd_oss_minors_hash[card]); return 0; } +#endif /* CONFIG_PROC_FS */ #endif /* CONFIG_SND_OSSEMUL */