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xianfeng |
/*
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| 2 |
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* Abstract layer for MIDI v1.0 stream
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* Copyright (c) by Jaroslav Kysela <perex@perex.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 <sound/driver.h>
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#include <sound/core.h>
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| 24 |
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#include <linux/major.h>
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| 25 |
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#include <linux/init.h>
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| 26 |
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/time.h>
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#include <linux/wait.h>
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#include <linux/mutex.h>
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#include <linux/moduleparam.h>
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#include <linux/delay.h>
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| 33 |
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#include <sound/rawmidi.h>
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| 34 |
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#include <sound/info.h>
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| 35 |
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#include <sound/control.h>
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| 36 |
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#include <sound/minors.h>
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#include <sound/initval.h>
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MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
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MODULE_DESCRIPTION("Midlevel RawMidi code for ALSA.");
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| 41 |
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MODULE_LICENSE("GPL");
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| 43 |
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#ifdef CONFIG_SND_OSSEMUL
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| 44 |
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static int midi_map[SNDRV_CARDS];
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| 45 |
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static int amidi_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1};
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| 46 |
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module_param_array(midi_map, int, NULL, 0444);
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| 47 |
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MODULE_PARM_DESC(midi_map, "Raw MIDI device number assigned to 1st OSS device.");
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| 48 |
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module_param_array(amidi_map, int, NULL, 0444);
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| 49 |
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MODULE_PARM_DESC(amidi_map, "Raw MIDI device number assigned to 2nd OSS device.");
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| 50 |
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#endif /* CONFIG_SND_OSSEMUL */
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| 51 |
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| 52 |
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static int snd_rawmidi_free(struct snd_rawmidi *rawmidi);
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| 53 |
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static int snd_rawmidi_dev_free(struct snd_device *device);
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| 54 |
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static int snd_rawmidi_dev_register(struct snd_device *device);
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static int snd_rawmidi_dev_disconnect(struct snd_device *device);
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| 56 |
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| 57 |
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static LIST_HEAD(snd_rawmidi_devices);
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| 58 |
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static DEFINE_MUTEX(register_mutex);
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| 59 |
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| 60 |
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static struct snd_rawmidi *snd_rawmidi_search(struct snd_card *card, int device)
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| 61 |
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{
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| 62 |
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struct snd_rawmidi *rawmidi;
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| 63 |
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| 64 |
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list_for_each_entry(rawmidi, &snd_rawmidi_devices, list)
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| 65 |
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if (rawmidi->card == card && rawmidi->device == device)
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return rawmidi;
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return NULL;
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| 68 |
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}
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| 69 |
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| 70 |
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static inline unsigned short snd_rawmidi_file_flags(struct file *file)
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{
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| 72 |
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switch (file->f_mode & (FMODE_READ | FMODE_WRITE)) {
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case FMODE_WRITE:
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return SNDRV_RAWMIDI_LFLG_OUTPUT;
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| 75 |
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case FMODE_READ:
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return SNDRV_RAWMIDI_LFLG_INPUT;
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| 77 |
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default:
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| 78 |
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return SNDRV_RAWMIDI_LFLG_OPEN;
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| 79 |
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}
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| 80 |
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}
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| 81 |
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| 82 |
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static inline int snd_rawmidi_ready(struct snd_rawmidi_substream *substream)
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| 83 |
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{
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| 84 |
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struct snd_rawmidi_runtime *runtime = substream->runtime;
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| 85 |
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return runtime->avail >= runtime->avail_min;
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| 86 |
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}
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| 87 |
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| 88 |
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static inline int snd_rawmidi_ready_append(struct snd_rawmidi_substream *substream,
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| 89 |
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size_t count)
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| 90 |
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{
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| 91 |
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struct snd_rawmidi_runtime *runtime = substream->runtime;
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| 92 |
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return runtime->avail >= runtime->avail_min &&
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| 93 |
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(!substream->append || runtime->avail >= count);
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| 94 |
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}
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| 95 |
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| 96 |
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static void snd_rawmidi_input_event_tasklet(unsigned long data)
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| 97 |
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{
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| 98 |
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struct snd_rawmidi_substream *substream = (struct snd_rawmidi_substream *)data;
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| 99 |
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substream->runtime->event(substream);
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| 100 |
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}
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| 101 |
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| 102 |
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static void snd_rawmidi_output_trigger_tasklet(unsigned long data)
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| 103 |
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{
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| 104 |
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struct snd_rawmidi_substream *substream = (struct snd_rawmidi_substream *)data;
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| 105 |
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substream->ops->trigger(substream, 1);
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| 106 |
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}
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| 107 |
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| 108 |
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static int snd_rawmidi_runtime_create(struct snd_rawmidi_substream *substream)
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{
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| 110 |
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struct snd_rawmidi_runtime *runtime;
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| 111 |
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| 112 |
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if ((runtime = kzalloc(sizeof(*runtime), GFP_KERNEL)) == NULL)
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| 113 |
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return -ENOMEM;
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spin_lock_init(&runtime->lock);
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| 115 |
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init_waitqueue_head(&runtime->sleep);
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if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)
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tasklet_init(&runtime->tasklet,
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snd_rawmidi_input_event_tasklet,
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(unsigned long)substream);
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else
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tasklet_init(&runtime->tasklet,
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snd_rawmidi_output_trigger_tasklet,
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(unsigned long)substream);
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| 124 |
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runtime->event = NULL;
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| 125 |
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runtime->buffer_size = PAGE_SIZE;
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| 126 |
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runtime->avail_min = 1;
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| 127 |
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if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)
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runtime->avail = 0;
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else
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runtime->avail = runtime->buffer_size;
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| 131 |
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if ((runtime->buffer = kmalloc(runtime->buffer_size, GFP_KERNEL)) == NULL) {
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| 132 |
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kfree(runtime);
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| 133 |
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return -ENOMEM;
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| 134 |
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}
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| 135 |
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runtime->appl_ptr = runtime->hw_ptr = 0;
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| 136 |
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substream->runtime = runtime;
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| 137 |
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return 0;
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| 138 |
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}
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| 139 |
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| 140 |
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static int snd_rawmidi_runtime_free(struct snd_rawmidi_substream *substream)
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| 141 |
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{
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| 142 |
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struct snd_rawmidi_runtime *runtime = substream->runtime;
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| 143 |
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| 144 |
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kfree(runtime->buffer);
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| 145 |
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kfree(runtime);
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substream->runtime = NULL;
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return 0;
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| 148 |
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}
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| 149 |
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| 150 |
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static inline void snd_rawmidi_output_trigger(struct snd_rawmidi_substream *substream,int up)
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{
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| 152 |
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if (up) {
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| 153 |
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tasklet_hi_schedule(&substream->runtime->tasklet);
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| 154 |
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} else {
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| 155 |
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tasklet_kill(&substream->runtime->tasklet);
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| 156 |
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substream->ops->trigger(substream, 0);
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| 157 |
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}
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| 158 |
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}
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| 159 |
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| 160 |
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static void snd_rawmidi_input_trigger(struct snd_rawmidi_substream *substream, int up)
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| 161 |
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{
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| 162 |
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substream->ops->trigger(substream, up);
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| 163 |
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if (!up && substream->runtime->event)
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| 164 |
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tasklet_kill(&substream->runtime->tasklet);
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| 165 |
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}
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| 166 |
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| 167 |
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int snd_rawmidi_drop_output(struct snd_rawmidi_substream *substream)
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| 168 |
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{
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| 169 |
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unsigned long flags;
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| 170 |
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struct snd_rawmidi_runtime *runtime = substream->runtime;
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| 171 |
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| 172 |
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snd_rawmidi_output_trigger(substream, 0);
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| 173 |
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runtime->drain = 0;
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| 174 |
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spin_lock_irqsave(&runtime->lock, flags);
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| 175 |
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runtime->appl_ptr = runtime->hw_ptr = 0;
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| 176 |
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runtime->avail = runtime->buffer_size;
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| 177 |
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spin_unlock_irqrestore(&runtime->lock, flags);
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| 178 |
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return 0;
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| 179 |
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}
|
| 180 |
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|
| 181 |
|
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int snd_rawmidi_drain_output(struct snd_rawmidi_substream *substream)
|
| 182 |
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{
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| 183 |
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int err;
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| 184 |
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long timeout;
|
| 185 |
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struct snd_rawmidi_runtime *runtime = substream->runtime;
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| 186 |
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| 187 |
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err = 0;
|
| 188 |
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runtime->drain = 1;
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| 189 |
|
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timeout = wait_event_interruptible_timeout(runtime->sleep,
|
| 190 |
|
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(runtime->avail >= runtime->buffer_size),
|
| 191 |
|
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10*HZ);
|
| 192 |
|
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if (signal_pending(current))
|
| 193 |
|
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err = -ERESTARTSYS;
|
| 194 |
|
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if (runtime->avail < runtime->buffer_size && !timeout) {
|
| 195 |
|
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snd_printk(KERN_WARNING "rawmidi drain error (avail = %li, buffer_size = %li)\n", (long)runtime->avail, (long)runtime->buffer_size);
|
| 196 |
|
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err = -EIO;
|
| 197 |
|
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}
|
| 198 |
|
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runtime->drain = 0;
|
| 199 |
|
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if (err != -ERESTARTSYS) {
|
| 200 |
|
|
/* we need wait a while to make sure that Tx FIFOs are empty */
|
| 201 |
|
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if (substream->ops->drain)
|
| 202 |
|
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substream->ops->drain(substream);
|
| 203 |
|
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else
|
| 204 |
|
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msleep(50);
|
| 205 |
|
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snd_rawmidi_drop_output(substream);
|
| 206 |
|
|
}
|
| 207 |
|
|
return err;
|
| 208 |
|
|
}
|
| 209 |
|
|
|
| 210 |
|
|
int snd_rawmidi_drain_input(struct snd_rawmidi_substream *substream)
|
| 211 |
|
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{
|
| 212 |
|
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unsigned long flags;
|
| 213 |
|
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struct snd_rawmidi_runtime *runtime = substream->runtime;
|
| 214 |
|
|
|
| 215 |
|
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snd_rawmidi_input_trigger(substream, 0);
|
| 216 |
|
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runtime->drain = 0;
|
| 217 |
|
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spin_lock_irqsave(&runtime->lock, flags);
|
| 218 |
|
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runtime->appl_ptr = runtime->hw_ptr = 0;
|
| 219 |
|
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runtime->avail = 0;
|
| 220 |
|
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spin_unlock_irqrestore(&runtime->lock, flags);
|
| 221 |
|
|
return 0;
|
| 222 |
|
|
}
|
| 223 |
|
|
|
| 224 |
|
|
int snd_rawmidi_kernel_open(struct snd_card *card, int device, int subdevice,
|
| 225 |
|
|
int mode, struct snd_rawmidi_file * rfile)
|
| 226 |
|
|
{
|
| 227 |
|
|
struct snd_rawmidi *rmidi;
|
| 228 |
|
|
struct list_head *list1, *list2;
|
| 229 |
|
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struct snd_rawmidi_substream *sinput = NULL, *soutput = NULL;
|
| 230 |
|
|
struct snd_rawmidi_runtime *input = NULL, *output = NULL;
|
| 231 |
|
|
int err;
|
| 232 |
|
|
|
| 233 |
|
|
if (rfile)
|
| 234 |
|
|
rfile->input = rfile->output = NULL;
|
| 235 |
|
|
mutex_lock(®ister_mutex);
|
| 236 |
|
|
rmidi = snd_rawmidi_search(card, device);
|
| 237 |
|
|
mutex_unlock(®ister_mutex);
|
| 238 |
|
|
if (rmidi == NULL) {
|
| 239 |
|
|
err = -ENODEV;
|
| 240 |
|
|
goto __error1;
|
| 241 |
|
|
}
|
| 242 |
|
|
if (!try_module_get(rmidi->card->module)) {
|
| 243 |
|
|
err = -EFAULT;
|
| 244 |
|
|
goto __error1;
|
| 245 |
|
|
}
|
| 246 |
|
|
if (!(mode & SNDRV_RAWMIDI_LFLG_NOOPENLOCK))
|
| 247 |
|
|
mutex_lock(&rmidi->open_mutex);
|
| 248 |
|
|
if (mode & SNDRV_RAWMIDI_LFLG_INPUT) {
|
| 249 |
|
|
if (!(rmidi->info_flags & SNDRV_RAWMIDI_INFO_INPUT)) {
|
| 250 |
|
|
err = -ENXIO;
|
| 251 |
|
|
goto __error;
|
| 252 |
|
|
}
|
| 253 |
|
|
if (subdevice >= 0 && (unsigned int)subdevice >= rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substream_count) {
|
| 254 |
|
|
err = -ENODEV;
|
| 255 |
|
|
goto __error;
|
| 256 |
|
|
}
|
| 257 |
|
|
if (rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substream_opened >=
|
| 258 |
|
|
rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substream_count) {
|
| 259 |
|
|
err = -EAGAIN;
|
| 260 |
|
|
goto __error;
|
| 261 |
|
|
}
|
| 262 |
|
|
}
|
| 263 |
|
|
if (mode & SNDRV_RAWMIDI_LFLG_OUTPUT) {
|
| 264 |
|
|
if (!(rmidi->info_flags & SNDRV_RAWMIDI_INFO_OUTPUT)) {
|
| 265 |
|
|
err = -ENXIO;
|
| 266 |
|
|
goto __error;
|
| 267 |
|
|
}
|
| 268 |
|
|
if (subdevice >= 0 && (unsigned int)subdevice >= rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substream_count) {
|
| 269 |
|
|
err = -ENODEV;
|
| 270 |
|
|
goto __error;
|
| 271 |
|
|
}
|
| 272 |
|
|
if (rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substream_opened >=
|
| 273 |
|
|
rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substream_count) {
|
| 274 |
|
|
err = -EAGAIN;
|
| 275 |
|
|
goto __error;
|
| 276 |
|
|
}
|
| 277 |
|
|
}
|
| 278 |
|
|
list1 = rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams.next;
|
| 279 |
|
|
while (1) {
|
| 280 |
|
|
if (list1 == &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
|
| 281 |
|
|
sinput = NULL;
|
| 282 |
|
|
if (mode & SNDRV_RAWMIDI_LFLG_INPUT) {
|
| 283 |
|
|
err = -EAGAIN;
|
| 284 |
|
|
goto __error;
|
| 285 |
|
|
}
|
| 286 |
|
|
break;
|
| 287 |
|
|
}
|
| 288 |
|
|
sinput = list_entry(list1, struct snd_rawmidi_substream, list);
|
| 289 |
|
|
if ((mode & SNDRV_RAWMIDI_LFLG_INPUT) && sinput->opened)
|
| 290 |
|
|
goto __nexti;
|
| 291 |
|
|
if (subdevice < 0 || (subdevice >= 0 && subdevice == sinput->number))
|
| 292 |
|
|
break;
|
| 293 |
|
|
__nexti:
|
| 294 |
|
|
list1 = list1->next;
|
| 295 |
|
|
}
|
| 296 |
|
|
list2 = rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams.next;
|
| 297 |
|
|
while (1) {
|
| 298 |
|
|
if (list2 == &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
|
| 299 |
|
|
soutput = NULL;
|
| 300 |
|
|
if (mode & SNDRV_RAWMIDI_LFLG_OUTPUT) {
|
| 301 |
|
|
err = -EAGAIN;
|
| 302 |
|
|
goto __error;
|
| 303 |
|
|
}
|
| 304 |
|
|
break;
|
| 305 |
|
|
}
|
| 306 |
|
|
soutput = list_entry(list2, struct snd_rawmidi_substream, list);
|
| 307 |
|
|
if (mode & SNDRV_RAWMIDI_LFLG_OUTPUT) {
|
| 308 |
|
|
if (mode & SNDRV_RAWMIDI_LFLG_APPEND) {
|
| 309 |
|
|
if (soutput->opened && !soutput->append)
|
| 310 |
|
|
goto __nexto;
|
| 311 |
|
|
} else {
|
| 312 |
|
|
if (soutput->opened)
|
| 313 |
|
|
goto __nexto;
|
| 314 |
|
|
}
|
| 315 |
|
|
}
|
| 316 |
|
|
if (subdevice < 0 || (subdevice >= 0 && subdevice == soutput->number))
|
| 317 |
|
|
break;
|
| 318 |
|
|
__nexto:
|
| 319 |
|
|
list2 = list2->next;
|
| 320 |
|
|
}
|
| 321 |
|
|
if (mode & SNDRV_RAWMIDI_LFLG_INPUT) {
|
| 322 |
|
|
if ((err = snd_rawmidi_runtime_create(sinput)) < 0)
|
| 323 |
|
|
goto __error;
|
| 324 |
|
|
input = sinput->runtime;
|
| 325 |
|
|
if ((err = sinput->ops->open(sinput)) < 0)
|
| 326 |
|
|
goto __error;
|
| 327 |
|
|
sinput->opened = 1;
|
| 328 |
|
|
rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substream_opened++;
|
| 329 |
|
|
} else {
|
| 330 |
|
|
sinput = NULL;
|
| 331 |
|
|
}
|
| 332 |
|
|
if (mode & SNDRV_RAWMIDI_LFLG_OUTPUT) {
|
| 333 |
|
|
if (soutput->opened)
|
| 334 |
|
|
goto __skip_output;
|
| 335 |
|
|
if ((err = snd_rawmidi_runtime_create(soutput)) < 0) {
|
| 336 |
|
|
if (mode & SNDRV_RAWMIDI_LFLG_INPUT)
|
| 337 |
|
|
sinput->ops->close(sinput);
|
| 338 |
|
|
goto __error;
|
| 339 |
|
|
}
|
| 340 |
|
|
output = soutput->runtime;
|
| 341 |
|
|
if ((err = soutput->ops->open(soutput)) < 0) {
|
| 342 |
|
|
if (mode & SNDRV_RAWMIDI_LFLG_INPUT)
|
| 343 |
|
|
sinput->ops->close(sinput);
|
| 344 |
|
|
goto __error;
|
| 345 |
|
|
}
|
| 346 |
|
|
__skip_output:
|
| 347 |
|
|
soutput->opened = 1;
|
| 348 |
|
|
if (mode & SNDRV_RAWMIDI_LFLG_APPEND)
|
| 349 |
|
|
soutput->append = 1;
|
| 350 |
|
|
if (soutput->use_count++ == 0)
|
| 351 |
|
|
soutput->active_sensing = 1;
|
| 352 |
|
|
rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substream_opened++;
|
| 353 |
|
|
} else {
|
| 354 |
|
|
soutput = NULL;
|
| 355 |
|
|
}
|
| 356 |
|
|
if (!(mode & SNDRV_RAWMIDI_LFLG_NOOPENLOCK))
|
| 357 |
|
|
mutex_unlock(&rmidi->open_mutex);
|
| 358 |
|
|
if (rfile) {
|
| 359 |
|
|
rfile->rmidi = rmidi;
|
| 360 |
|
|
rfile->input = sinput;
|
| 361 |
|
|
rfile->output = soutput;
|
| 362 |
|
|
}
|
| 363 |
|
|
return 0;
|
| 364 |
|
|
|
| 365 |
|
|
__error:
|
| 366 |
|
|
if (input != NULL)
|
| 367 |
|
|
snd_rawmidi_runtime_free(sinput);
|
| 368 |
|
|
if (output != NULL)
|
| 369 |
|
|
snd_rawmidi_runtime_free(soutput);
|
| 370 |
|
|
module_put(rmidi->card->module);
|
| 371 |
|
|
if (!(mode & SNDRV_RAWMIDI_LFLG_NOOPENLOCK))
|
| 372 |
|
|
mutex_unlock(&rmidi->open_mutex);
|
| 373 |
|
|
__error1:
|
| 374 |
|
|
return err;
|
| 375 |
|
|
}
|
| 376 |
|
|
|
| 377 |
|
|
static int snd_rawmidi_open(struct inode *inode, struct file *file)
|
| 378 |
|
|
{
|
| 379 |
|
|
int maj = imajor(inode);
|
| 380 |
|
|
struct snd_card *card;
|
| 381 |
|
|
int subdevice;
|
| 382 |
|
|
unsigned short fflags;
|
| 383 |
|
|
int err;
|
| 384 |
|
|
struct snd_rawmidi *rmidi;
|
| 385 |
|
|
struct snd_rawmidi_file *rawmidi_file;
|
| 386 |
|
|
wait_queue_t wait;
|
| 387 |
|
|
struct snd_ctl_file *kctl;
|
| 388 |
|
|
|
| 389 |
|
|
if (maj == snd_major) {
|
| 390 |
|
|
rmidi = snd_lookup_minor_data(iminor(inode),
|
| 391 |
|
|
SNDRV_DEVICE_TYPE_RAWMIDI);
|
| 392 |
|
|
#ifdef CONFIG_SND_OSSEMUL
|
| 393 |
|
|
} else if (maj == SOUND_MAJOR) {
|
| 394 |
|
|
rmidi = snd_lookup_oss_minor_data(iminor(inode),
|
| 395 |
|
|
SNDRV_OSS_DEVICE_TYPE_MIDI);
|
| 396 |
|
|
#endif
|
| 397 |
|
|
} else
|
| 398 |
|
|
return -ENXIO;
|
| 399 |
|
|
|
| 400 |
|
|
if (rmidi == NULL)
|
| 401 |
|
|
return -ENODEV;
|
| 402 |
|
|
if ((file->f_flags & O_APPEND) && !(file->f_flags & O_NONBLOCK))
|
| 403 |
|
|
return -EINVAL; /* invalid combination */
|
| 404 |
|
|
card = rmidi->card;
|
| 405 |
|
|
err = snd_card_file_add(card, file);
|
| 406 |
|
|
if (err < 0)
|
| 407 |
|
|
return -ENODEV;
|
| 408 |
|
|
fflags = snd_rawmidi_file_flags(file);
|
| 409 |
|
|
if ((file->f_flags & O_APPEND) || maj == SOUND_MAJOR) /* OSS emul? */
|
| 410 |
|
|
fflags |= SNDRV_RAWMIDI_LFLG_APPEND;
|
| 411 |
|
|
fflags |= SNDRV_RAWMIDI_LFLG_NOOPENLOCK;
|
| 412 |
|
|
rawmidi_file = kmalloc(sizeof(*rawmidi_file), GFP_KERNEL);
|
| 413 |
|
|
if (rawmidi_file == NULL) {
|
| 414 |
|
|
snd_card_file_remove(card, file);
|
| 415 |
|
|
return -ENOMEM;
|
| 416 |
|
|
}
|
| 417 |
|
|
init_waitqueue_entry(&wait, current);
|
| 418 |
|
|
add_wait_queue(&rmidi->open_wait, &wait);
|
| 419 |
|
|
mutex_lock(&rmidi->open_mutex);
|
| 420 |
|
|
while (1) {
|
| 421 |
|
|
subdevice = -1;
|
| 422 |
|
|
down_read(&card->controls_rwsem);
|
| 423 |
|
|
list_for_each_entry(kctl, &card->ctl_files, list) {
|
| 424 |
|
|
if (kctl->pid == current->pid) {
|
| 425 |
|
|
subdevice = kctl->prefer_rawmidi_subdevice;
|
| 426 |
|
|
if (subdevice != -1)
|
| 427 |
|
|
break;
|
| 428 |
|
|
}
|
| 429 |
|
|
}
|
| 430 |
|
|
up_read(&card->controls_rwsem);
|
| 431 |
|
|
err = snd_rawmidi_kernel_open(rmidi->card, rmidi->device,
|
| 432 |
|
|
subdevice, fflags, rawmidi_file);
|
| 433 |
|
|
if (err >= 0)
|
| 434 |
|
|
break;
|
| 435 |
|
|
if (err == -EAGAIN) {
|
| 436 |
|
|
if (file->f_flags & O_NONBLOCK) {
|
| 437 |
|
|
err = -EBUSY;
|
| 438 |
|
|
break;
|
| 439 |
|
|
}
|
| 440 |
|
|
} else
|
| 441 |
|
|
break;
|
| 442 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
| 443 |
|
|
mutex_unlock(&rmidi->open_mutex);
|
| 444 |
|
|
schedule();
|
| 445 |
|
|
mutex_lock(&rmidi->open_mutex);
|
| 446 |
|
|
if (signal_pending(current)) {
|
| 447 |
|
|
err = -ERESTARTSYS;
|
| 448 |
|
|
break;
|
| 449 |
|
|
}
|
| 450 |
|
|
}
|
| 451 |
|
|
#ifdef CONFIG_SND_OSSEMUL
|
| 452 |
|
|
if (rawmidi_file->input && rawmidi_file->input->runtime)
|
| 453 |
|
|
rawmidi_file->input->runtime->oss = (maj == SOUND_MAJOR);
|
| 454 |
|
|
if (rawmidi_file->output && rawmidi_file->output->runtime)
|
| 455 |
|
|
rawmidi_file->output->runtime->oss = (maj == SOUND_MAJOR);
|
| 456 |
|
|
#endif
|
| 457 |
|
|
remove_wait_queue(&rmidi->open_wait, &wait);
|
| 458 |
|
|
if (err >= 0) {
|
| 459 |
|
|
file->private_data = rawmidi_file;
|
| 460 |
|
|
} else {
|
| 461 |
|
|
snd_card_file_remove(card, file);
|
| 462 |
|
|
kfree(rawmidi_file);
|
| 463 |
|
|
}
|
| 464 |
|
|
mutex_unlock(&rmidi->open_mutex);
|
| 465 |
|
|
return err;
|
| 466 |
|
|
}
|
| 467 |
|
|
|
| 468 |
|
|
int snd_rawmidi_kernel_release(struct snd_rawmidi_file * rfile)
|
| 469 |
|
|
{
|
| 470 |
|
|
struct snd_rawmidi *rmidi;
|
| 471 |
|
|
struct snd_rawmidi_substream *substream;
|
| 472 |
|
|
struct snd_rawmidi_runtime *runtime;
|
| 473 |
|
|
|
| 474 |
|
|
snd_assert(rfile != NULL, return -ENXIO);
|
| 475 |
|
|
snd_assert(rfile->input != NULL || rfile->output != NULL, return -ENXIO);
|
| 476 |
|
|
rmidi = rfile->rmidi;
|
| 477 |
|
|
mutex_lock(&rmidi->open_mutex);
|
| 478 |
|
|
if (rfile->input != NULL) {
|
| 479 |
|
|
substream = rfile->input;
|
| 480 |
|
|
rfile->input = NULL;
|
| 481 |
|
|
runtime = substream->runtime;
|
| 482 |
|
|
snd_rawmidi_input_trigger(substream, 0);
|
| 483 |
|
|
substream->ops->close(substream);
|
| 484 |
|
|
if (runtime->private_free != NULL)
|
| 485 |
|
|
runtime->private_free(substream);
|
| 486 |
|
|
snd_rawmidi_runtime_free(substream);
|
| 487 |
|
|
substream->opened = 0;
|
| 488 |
|
|
rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substream_opened--;
|
| 489 |
|
|
}
|
| 490 |
|
|
if (rfile->output != NULL) {
|
| 491 |
|
|
substream = rfile->output;
|
| 492 |
|
|
rfile->output = NULL;
|
| 493 |
|
|
if (--substream->use_count == 0) {
|
| 494 |
|
|
runtime = substream->runtime;
|
| 495 |
|
|
if (substream->active_sensing) {
|
| 496 |
|
|
unsigned char buf = 0xfe;
|
| 497 |
|
|
/* sending single active sensing message to shut the device up */
|
| 498 |
|
|
snd_rawmidi_kernel_write(substream, &buf, 1);
|
| 499 |
|
|
}
|
| 500 |
|
|
if (snd_rawmidi_drain_output(substream) == -ERESTARTSYS)
|
| 501 |
|
|
snd_rawmidi_output_trigger(substream, 0);
|
| 502 |
|
|
substream->ops->close(substream);
|
| 503 |
|
|
if (runtime->private_free != NULL)
|
| 504 |
|
|
runtime->private_free(substream);
|
| 505 |
|
|
snd_rawmidi_runtime_free(substream);
|
| 506 |
|
|
substream->opened = 0;
|
| 507 |
|
|
substream->append = 0;
|
| 508 |
|
|
}
|
| 509 |
|
|
rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substream_opened--;
|
| 510 |
|
|
}
|
| 511 |
|
|
mutex_unlock(&rmidi->open_mutex);
|
| 512 |
|
|
module_put(rmidi->card->module);
|
| 513 |
|
|
return 0;
|
| 514 |
|
|
}
|
| 515 |
|
|
|
| 516 |
|
|
static int snd_rawmidi_release(struct inode *inode, struct file *file)
|
| 517 |
|
|
{
|
| 518 |
|
|
struct snd_rawmidi_file *rfile;
|
| 519 |
|
|
struct snd_rawmidi *rmidi;
|
| 520 |
|
|
int err;
|
| 521 |
|
|
|
| 522 |
|
|
rfile = file->private_data;
|
| 523 |
|
|
err = snd_rawmidi_kernel_release(rfile);
|
| 524 |
|
|
rmidi = rfile->rmidi;
|
| 525 |
|
|
wake_up(&rmidi->open_wait);
|
| 526 |
|
|
kfree(rfile);
|
| 527 |
|
|
snd_card_file_remove(rmidi->card, file);
|
| 528 |
|
|
return err;
|
| 529 |
|
|
}
|
| 530 |
|
|
|
| 531 |
|
|
static int snd_rawmidi_info(struct snd_rawmidi_substream *substream,
|
| 532 |
|
|
struct snd_rawmidi_info *info)
|
| 533 |
|
|
{
|
| 534 |
|
|
struct snd_rawmidi *rmidi;
|
| 535 |
|
|
|
| 536 |
|
|
if (substream == NULL)
|
| 537 |
|
|
return -ENODEV;
|
| 538 |
|
|
rmidi = substream->rmidi;
|
| 539 |
|
|
memset(info, 0, sizeof(*info));
|
| 540 |
|
|
info->card = rmidi->card->number;
|
| 541 |
|
|
info->device = rmidi->device;
|
| 542 |
|
|
info->subdevice = substream->number;
|
| 543 |
|
|
info->stream = substream->stream;
|
| 544 |
|
|
info->flags = rmidi->info_flags;
|
| 545 |
|
|
strcpy(info->id, rmidi->id);
|
| 546 |
|
|
strcpy(info->name, rmidi->name);
|
| 547 |
|
|
strcpy(info->subname, substream->name);
|
| 548 |
|
|
info->subdevices_count = substream->pstr->substream_count;
|
| 549 |
|
|
info->subdevices_avail = (substream->pstr->substream_count -
|
| 550 |
|
|
substream->pstr->substream_opened);
|
| 551 |
|
|
return 0;
|
| 552 |
|
|
}
|
| 553 |
|
|
|
| 554 |
|
|
static int snd_rawmidi_info_user(struct snd_rawmidi_substream *substream,
|
| 555 |
|
|
struct snd_rawmidi_info __user * _info)
|
| 556 |
|
|
{
|
| 557 |
|
|
struct snd_rawmidi_info info;
|
| 558 |
|
|
int err;
|
| 559 |
|
|
if ((err = snd_rawmidi_info(substream, &info)) < 0)
|
| 560 |
|
|
return err;
|
| 561 |
|
|
if (copy_to_user(_info, &info, sizeof(struct snd_rawmidi_info)))
|
| 562 |
|
|
return -EFAULT;
|
| 563 |
|
|
return 0;
|
| 564 |
|
|
}
|
| 565 |
|
|
|
| 566 |
|
|
int snd_rawmidi_info_select(struct snd_card *card, struct snd_rawmidi_info *info)
|
| 567 |
|
|
{
|
| 568 |
|
|
struct snd_rawmidi *rmidi;
|
| 569 |
|
|
struct snd_rawmidi_str *pstr;
|
| 570 |
|
|
struct snd_rawmidi_substream *substream;
|
| 571 |
|
|
|
| 572 |
|
|
mutex_lock(®ister_mutex);
|
| 573 |
|
|
rmidi = snd_rawmidi_search(card, info->device);
|
| 574 |
|
|
mutex_unlock(®ister_mutex);
|
| 575 |
|
|
if (!rmidi)
|
| 576 |
|
|
return -ENXIO;
|
| 577 |
|
|
if (info->stream < 0 || info->stream > 1)
|
| 578 |
|
|
return -EINVAL;
|
| 579 |
|
|
pstr = &rmidi->streams[info->stream];
|
| 580 |
|
|
if (pstr->substream_count == 0)
|
| 581 |
|
|
return -ENOENT;
|
| 582 |
|
|
if (info->subdevice >= pstr->substream_count)
|
| 583 |
|
|
return -ENXIO;
|
| 584 |
|
|
list_for_each_entry(substream, &pstr->substreams, list) {
|
| 585 |
|
|
if ((unsigned int)substream->number == info->subdevice)
|
| 586 |
|
|
return snd_rawmidi_info(substream, info);
|
| 587 |
|
|
}
|
| 588 |
|
|
return -ENXIO;
|
| 589 |
|
|
}
|
| 590 |
|
|
|
| 591 |
|
|
static int snd_rawmidi_info_select_user(struct snd_card *card,
|
| 592 |
|
|
struct snd_rawmidi_info __user *_info)
|
| 593 |
|
|
{
|
| 594 |
|
|
int err;
|
| 595 |
|
|
struct snd_rawmidi_info info;
|
| 596 |
|
|
if (get_user(info.device, &_info->device))
|
| 597 |
|
|
return -EFAULT;
|
| 598 |
|
|
if (get_user(info.stream, &_info->stream))
|
| 599 |
|
|
return -EFAULT;
|
| 600 |
|
|
if (get_user(info.subdevice, &_info->subdevice))
|
| 601 |
|
|
return -EFAULT;
|
| 602 |
|
|
if ((err = snd_rawmidi_info_select(card, &info)) < 0)
|
| 603 |
|
|
return err;
|
| 604 |
|
|
if (copy_to_user(_info, &info, sizeof(struct snd_rawmidi_info)))
|
| 605 |
|
|
return -EFAULT;
|
| 606 |
|
|
return 0;
|
| 607 |
|
|
}
|
| 608 |
|
|
|
| 609 |
|
|
int snd_rawmidi_output_params(struct snd_rawmidi_substream *substream,
|
| 610 |
|
|
struct snd_rawmidi_params * params)
|
| 611 |
|
|
{
|
| 612 |
|
|
char *newbuf;
|
| 613 |
|
|
struct snd_rawmidi_runtime *runtime = substream->runtime;
|
| 614 |
|
|
|
| 615 |
|
|
if (substream->append && substream->use_count > 1)
|
| 616 |
|
|
return -EBUSY;
|
| 617 |
|
|
snd_rawmidi_drain_output(substream);
|
| 618 |
|
|
if (params->buffer_size < 32 || params->buffer_size > 1024L * 1024L) {
|
| 619 |
|
|
return -EINVAL;
|
| 620 |
|
|
}
|
| 621 |
|
|
if (params->avail_min < 1 || params->avail_min > params->buffer_size) {
|
| 622 |
|
|
return -EINVAL;
|
| 623 |
|
|
}
|
| 624 |
|
|
if (params->buffer_size != runtime->buffer_size) {
|
| 625 |
|
|
newbuf = kmalloc(params->buffer_size, GFP_KERNEL);
|
| 626 |
|
|
if (!newbuf)
|
| 627 |
|
|
return -ENOMEM;
|
| 628 |
|
|
kfree(runtime->buffer);
|
| 629 |
|
|
runtime->buffer = newbuf;
|
| 630 |
|
|
runtime->buffer_size = params->buffer_size;
|
| 631 |
|
|
runtime->avail = runtime->buffer_size;
|
| 632 |
|
|
}
|
| 633 |
|
|
runtime->avail_min = params->avail_min;
|
| 634 |
|
|
substream->active_sensing = !params->no_active_sensing;
|
| 635 |
|
|
return 0;
|
| 636 |
|
|
}
|
| 637 |
|
|
|
| 638 |
|
|
int snd_rawmidi_input_params(struct snd_rawmidi_substream *substream,
|
| 639 |
|
|
struct snd_rawmidi_params * params)
|
| 640 |
|
|
{
|
| 641 |
|
|
char *newbuf;
|
| 642 |
|
|
struct snd_rawmidi_runtime *runtime = substream->runtime;
|
| 643 |
|
|
|
| 644 |
|
|
snd_rawmidi_drain_input(substream);
|
| 645 |
|
|
if (params->buffer_size < 32 || params->buffer_size > 1024L * 1024L) {
|
| 646 |
|
|
return -EINVAL;
|
| 647 |
|
|
}
|
| 648 |
|
|
if (params->avail_min < 1 || params->avail_min > params->buffer_size) {
|
| 649 |
|
|
return -EINVAL;
|
| 650 |
|
|
}
|
| 651 |
|
|
if (params->buffer_size != runtime->buffer_size) {
|
| 652 |
|
|
newbuf = kmalloc(params->buffer_size, GFP_KERNEL);
|
| 653 |
|
|
if (!newbuf)
|
| 654 |
|
|
return -ENOMEM;
|
| 655 |
|
|
kfree(runtime->buffer);
|
| 656 |
|
|
runtime->buffer = newbuf;
|
| 657 |
|
|
runtime->buffer_size = params->buffer_size;
|
| 658 |
|
|
}
|
| 659 |
|
|
runtime->avail_min = params->avail_min;
|
| 660 |
|
|
return 0;
|
| 661 |
|
|
}
|
| 662 |
|
|
|
| 663 |
|
|
static int snd_rawmidi_output_status(struct snd_rawmidi_substream *substream,
|
| 664 |
|
|
struct snd_rawmidi_status * status)
|
| 665 |
|
|
{
|
| 666 |
|
|
struct snd_rawmidi_runtime *runtime = substream->runtime;
|
| 667 |
|
|
|
| 668 |
|
|
memset(status, 0, sizeof(*status));
|
| 669 |
|
|
status->stream = SNDRV_RAWMIDI_STREAM_OUTPUT;
|
| 670 |
|
|
spin_lock_irq(&runtime->lock);
|
| 671 |
|
|
status->avail = runtime->avail;
|
| 672 |
|
|
spin_unlock_irq(&runtime->lock);
|
| 673 |
|
|
return 0;
|
| 674 |
|
|
}
|
| 675 |
|
|
|
| 676 |
|
|
static int snd_rawmidi_input_status(struct snd_rawmidi_substream *substream,
|
| 677 |
|
|
struct snd_rawmidi_status * status)
|
| 678 |
|
|
{
|
| 679 |
|
|
struct snd_rawmidi_runtime *runtime = substream->runtime;
|
| 680 |
|
|
|
| 681 |
|
|
memset(status, 0, sizeof(*status));
|
| 682 |
|
|
status->stream = SNDRV_RAWMIDI_STREAM_INPUT;
|
| 683 |
|
|
spin_lock_irq(&runtime->lock);
|
| 684 |
|
|
status->avail = runtime->avail;
|
| 685 |
|
|
status->xruns = runtime->xruns;
|
| 686 |
|
|
runtime->xruns = 0;
|
| 687 |
|
|
spin_unlock_irq(&runtime->lock);
|
| 688 |
|
|
return 0;
|
| 689 |
|
|
}
|
| 690 |
|
|
|
| 691 |
|
|
static long snd_rawmidi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
| 692 |
|
|
{
|
| 693 |
|
|
struct snd_rawmidi_file *rfile;
|
| 694 |
|
|
void __user *argp = (void __user *)arg;
|
| 695 |
|
|
|
| 696 |
|
|
rfile = file->private_data;
|
| 697 |
|
|
if (((cmd >> 8) & 0xff) != 'W')
|
| 698 |
|
|
return -ENOTTY;
|
| 699 |
|
|
switch (cmd) {
|
| 700 |
|
|
case SNDRV_RAWMIDI_IOCTL_PVERSION:
|
| 701 |
|
|
return put_user(SNDRV_RAWMIDI_VERSION, (int __user *)argp) ? -EFAULT : 0;
|
| 702 |
|
|
case SNDRV_RAWMIDI_IOCTL_INFO:
|
| 703 |
|
|
{
|
| 704 |
|
|
int stream;
|
| 705 |
|
|
struct snd_rawmidi_info __user *info = argp;
|
| 706 |
|
|
if (get_user(stream, &info->stream))
|
| 707 |
|
|
return -EFAULT;
|
| 708 |
|
|
switch (stream) {
|
| 709 |
|
|
case SNDRV_RAWMIDI_STREAM_INPUT:
|
| 710 |
|
|
return snd_rawmidi_info_user(rfile->input, info);
|
| 711 |
|
|
case SNDRV_RAWMIDI_STREAM_OUTPUT:
|
| 712 |
|
|
return snd_rawmidi_info_user(rfile->output, info);
|
| 713 |
|
|
default:
|
| 714 |
|
|
return -EINVAL;
|
| 715 |
|
|
}
|
| 716 |
|
|
}
|
| 717 |
|
|
case SNDRV_RAWMIDI_IOCTL_PARAMS:
|
| 718 |
|
|
{
|
| 719 |
|
|
struct snd_rawmidi_params params;
|
| 720 |
|
|
if (copy_from_user(¶ms, argp, sizeof(struct snd_rawmidi_params)))
|
| 721 |
|
|
return -EFAULT;
|
| 722 |
|
|
switch (params.stream) {
|
| 723 |
|
|
case SNDRV_RAWMIDI_STREAM_OUTPUT:
|
| 724 |
|
|
if (rfile->output == NULL)
|
| 725 |
|
|
return -EINVAL;
|
| 726 |
|
|
return snd_rawmidi_output_params(rfile->output, ¶ms);
|
| 727 |
|
|
case SNDRV_RAWMIDI_STREAM_INPUT:
|
| 728 |
|
|
if (rfile->input == NULL)
|
| 729 |
|
|
return -EINVAL;
|
| 730 |
|
|
return snd_rawmidi_input_params(rfile->input, ¶ms);
|
| 731 |
|
|
default:
|
| 732 |
|
|
return -EINVAL;
|
| 733 |
|
|
}
|
| 734 |
|
|
}
|
| 735 |
|
|
case SNDRV_RAWMIDI_IOCTL_STATUS:
|
| 736 |
|
|
{
|
| 737 |
|
|
int err = 0;
|
| 738 |
|
|
struct snd_rawmidi_status status;
|
| 739 |
|
|
if (copy_from_user(&status, argp, sizeof(struct snd_rawmidi_status)))
|
| 740 |
|
|
return -EFAULT;
|
| 741 |
|
|
switch (status.stream) {
|
| 742 |
|
|
case SNDRV_RAWMIDI_STREAM_OUTPUT:
|
| 743 |
|
|
if (rfile->output == NULL)
|
| 744 |
|
|
return -EINVAL;
|
| 745 |
|
|
err = snd_rawmidi_output_status(rfile->output, &status);
|
| 746 |
|
|
break;
|
| 747 |
|
|
case SNDRV_RAWMIDI_STREAM_INPUT:
|
| 748 |
|
|
if (rfile->input == NULL)
|
| 749 |
|
|
return -EINVAL;
|
| 750 |
|
|
err = snd_rawmidi_input_status(rfile->input, &status);
|
| 751 |
|
|
break;
|
| 752 |
|
|
default:
|
| 753 |
|
|
return -EINVAL;
|
| 754 |
|
|
}
|
| 755 |
|
|
if (err < 0)
|
| 756 |
|
|
return err;
|
| 757 |
|
|
if (copy_to_user(argp, &status, sizeof(struct snd_rawmidi_status)))
|
| 758 |
|
|
return -EFAULT;
|
| 759 |
|
|
return 0;
|
| 760 |
|
|
}
|
| 761 |
|
|
case SNDRV_RAWMIDI_IOCTL_DROP:
|
| 762 |
|
|
{
|
| 763 |
|
|
int val;
|
| 764 |
|
|
if (get_user(val, (int __user *) argp))
|
| 765 |
|
|
return -EFAULT;
|
| 766 |
|
|
switch (val) {
|
| 767 |
|
|
case SNDRV_RAWMIDI_STREAM_OUTPUT:
|
| 768 |
|
|
if (rfile->output == NULL)
|
| 769 |
|
|
return -EINVAL;
|
| 770 |
|
|
return snd_rawmidi_drop_output(rfile->output);
|
| 771 |
|
|
default:
|
| 772 |
|
|
return -EINVAL;
|
| 773 |
|
|
}
|
| 774 |
|
|
}
|
| 775 |
|
|
case SNDRV_RAWMIDI_IOCTL_DRAIN:
|
| 776 |
|
|
{
|
| 777 |
|
|
int val;
|
| 778 |
|
|
if (get_user(val, (int __user *) argp))
|
| 779 |
|
|
return -EFAULT;
|
| 780 |
|
|
switch (val) {
|
| 781 |
|
|
case SNDRV_RAWMIDI_STREAM_OUTPUT:
|
| 782 |
|
|
if (rfile->output == NULL)
|
| 783 |
|
|
return -EINVAL;
|
| 784 |
|
|
return snd_rawmidi_drain_output(rfile->output);
|
| 785 |
|
|
case SNDRV_RAWMIDI_STREAM_INPUT:
|
| 786 |
|
|
if (rfile->input == NULL)
|
| 787 |
|
|
return -EINVAL;
|
| 788 |
|
|
return snd_rawmidi_drain_input(rfile->input);
|
| 789 |
|
|
default:
|
| 790 |
|
|
return -EINVAL;
|
| 791 |
|
|
}
|
| 792 |
|
|
}
|
| 793 |
|
|
#ifdef CONFIG_SND_DEBUG
|
| 794 |
|
|
default:
|
| 795 |
|
|
snd_printk(KERN_WARNING "rawmidi: unknown command = 0x%x\n", cmd);
|
| 796 |
|
|
#endif
|
| 797 |
|
|
}
|
| 798 |
|
|
return -ENOTTY;
|
| 799 |
|
|
}
|
| 800 |
|
|
|
| 801 |
|
|
static int snd_rawmidi_control_ioctl(struct snd_card *card,
|
| 802 |
|
|
struct snd_ctl_file *control,
|
| 803 |
|
|
unsigned int cmd,
|
| 804 |
|
|
unsigned long arg)
|
| 805 |
|
|
{
|
| 806 |
|
|
void __user *argp = (void __user *)arg;
|
| 807 |
|
|
|
| 808 |
|
|
switch (cmd) {
|
| 809 |
|
|
case SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE:
|
| 810 |
|
|
{
|
| 811 |
|
|
int device;
|
| 812 |
|
|
|
| 813 |
|
|
if (get_user(device, (int __user *)argp))
|
| 814 |
|
|
return -EFAULT;
|
| 815 |
|
|
mutex_lock(®ister_mutex);
|
| 816 |
|
|
device = device < 0 ? 0 : device + 1;
|
| 817 |
|
|
while (device < SNDRV_RAWMIDI_DEVICES) {
|
| 818 |
|
|
if (snd_rawmidi_search(card, device))
|
| 819 |
|
|
break;
|
| 820 |
|
|
device++;
|
| 821 |
|
|
}
|
| 822 |
|
|
if (device == SNDRV_RAWMIDI_DEVICES)
|
| 823 |
|
|
device = -1;
|
| 824 |
|
|
mutex_unlock(®ister_mutex);
|
| 825 |
|
|
if (put_user(device, (int __user *)argp))
|
| 826 |
|
|
return -EFAULT;
|
| 827 |
|
|
return 0;
|
| 828 |
|
|
}
|
| 829 |
|
|
case SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE:
|
| 830 |
|
|
{
|
| 831 |
|
|
int val;
|
| 832 |
|
|
|
| 833 |
|
|
if (get_user(val, (int __user *)argp))
|
| 834 |
|
|
return -EFAULT;
|
| 835 |
|
|
control->prefer_rawmidi_subdevice = val;
|
| 836 |
|
|
return 0;
|
| 837 |
|
|
}
|
| 838 |
|
|
case SNDRV_CTL_IOCTL_RAWMIDI_INFO:
|
| 839 |
|
|
return snd_rawmidi_info_select_user(card, argp);
|
| 840 |
|
|
}
|
| 841 |
|
|
return -ENOIOCTLCMD;
|
| 842 |
|
|
}
|
| 843 |
|
|
|
| 844 |
|
|
/**
|
| 845 |
|
|
* snd_rawmidi_receive - receive the input data from the device
|
| 846 |
|
|
* @substream: the rawmidi substream
|
| 847 |
|
|
* @buffer: the buffer pointer
|
| 848 |
|
|
* @count: the data size to read
|
| 849 |
|
|
*
|
| 850 |
|
|
* Reads the data from the internal buffer.
|
| 851 |
|
|
*
|
| 852 |
|
|
* Returns the size of read data, or a negative error code on failure.
|
| 853 |
|
|
*/
|
| 854 |
|
|
int snd_rawmidi_receive(struct snd_rawmidi_substream *substream,
|
| 855 |
|
|
const unsigned char *buffer, int count)
|
| 856 |
|
|
{
|
| 857 |
|
|
unsigned long flags;
|
| 858 |
|
|
int result = 0, count1;
|
| 859 |
|
|
struct snd_rawmidi_runtime *runtime = substream->runtime;
|
| 860 |
|
|
|
| 861 |
|
|
if (runtime->buffer == NULL) {
|
| 862 |
|
|
snd_printd("snd_rawmidi_receive: input is not active!!!\n");
|
| 863 |
|
|
return -EINVAL;
|
| 864 |
|
|
}
|
| 865 |
|
|
spin_lock_irqsave(&runtime->lock, flags);
|
| 866 |
|
|
if (count == 1) { /* special case, faster code */
|
| 867 |
|
|
substream->bytes++;
|
| 868 |
|
|
if (runtime->avail < runtime->buffer_size) {
|
| 869 |
|
|
runtime->buffer[runtime->hw_ptr++] = buffer[0];
|
| 870 |
|
|
runtime->hw_ptr %= runtime->buffer_size;
|
| 871 |
|
|
runtime->avail++;
|
| 872 |
|
|
result++;
|
| 873 |
|
|
} else {
|
| 874 |
|
|
runtime->xruns++;
|
| 875 |
|
|
}
|
| 876 |
|
|
} else {
|
| 877 |
|
|
substream->bytes += count;
|
| 878 |
|
|
count1 = runtime->buffer_size - runtime->hw_ptr;
|
| 879 |
|
|
if (count1 > count)
|
| 880 |
|
|
count1 = count;
|
| 881 |
|
|
if (count1 > (int)(runtime->buffer_size - runtime->avail))
|
| 882 |
|
|
count1 = runtime->buffer_size - runtime->avail;
|
| 883 |
|
|
memcpy(runtime->buffer + runtime->hw_ptr, buffer, count1);
|
| 884 |
|
|
runtime->hw_ptr += count1;
|
| 885 |
|
|
runtime->hw_ptr %= runtime->buffer_size;
|
| 886 |
|
|
runtime->avail += count1;
|
| 887 |
|
|
count -= count1;
|
| 888 |
|
|
result += count1;
|
| 889 |
|
|
if (count > 0) {
|
| 890 |
|
|
buffer += count1;
|
| 891 |
|
|
count1 = count;
|
| 892 |
|
|
if (count1 > (int)(runtime->buffer_size - runtime->avail)) {
|
| 893 |
|
|
count1 = runtime->buffer_size - runtime->avail;
|
| 894 |
|
|
runtime->xruns += count - count1;
|
| 895 |
|
|
}
|
| 896 |
|
|
if (count1 > 0) {
|
| 897 |
|
|
memcpy(runtime->buffer, buffer, count1);
|
| 898 |
|
|
runtime->hw_ptr = count1;
|
| 899 |
|
|
runtime->avail += count1;
|
| 900 |
|
|
result += count1;
|
| 901 |
|
|
}
|
| 902 |
|
|
}
|
| 903 |
|
|
}
|
| 904 |
|
|
if (result > 0) {
|
| 905 |
|
|
if (runtime->event)
|
| 906 |
|
|
tasklet_hi_schedule(&runtime->tasklet);
|
| 907 |
|
|
else if (snd_rawmidi_ready(substream))
|
| 908 |
|
|
wake_up(&runtime->sleep);
|
| 909 |
|
|
}
|
| 910 |
|
|
spin_unlock_irqrestore(&runtime->lock, flags);
|
| 911 |
|
|
return result;
|
| 912 |
|
|
}
|
| 913 |
|
|
|
| 914 |
|
|
static long snd_rawmidi_kernel_read1(struct snd_rawmidi_substream *substream,
|
| 915 |
|
|
unsigned char *buf, long count, int kernel)
|
| 916 |
|
|
{
|
| 917 |
|
|
unsigned long flags;
|
| 918 |
|
|
long result = 0, count1;
|
| 919 |
|
|
struct snd_rawmidi_runtime *runtime = substream->runtime;
|
| 920 |
|
|
|
| 921 |
|
|
while (count > 0 && runtime->avail) {
|
| 922 |
|
|
count1 = runtime->buffer_size - runtime->appl_ptr;
|
| 923 |
|
|
if (count1 > count)
|
| 924 |
|
|
count1 = count;
|
| 925 |
|
|
spin_lock_irqsave(&runtime->lock, flags);
|
| 926 |
|
|
if (count1 > (int)runtime->avail)
|
| 927 |
|
|
count1 = runtime->avail;
|
| 928 |
|
|
if (kernel) {
|
| 929 |
|
|
memcpy(buf + result, runtime->buffer + runtime->appl_ptr, count1);
|
| 930 |
|
|
} else {
|
| 931 |
|
|
spin_unlock_irqrestore(&runtime->lock, flags);
|
| 932 |
|
|
if (copy_to_user((char __user *)buf + result,
|
| 933 |
|
|
runtime->buffer + runtime->appl_ptr, count1)) {
|
| 934 |
|
|
return result > 0 ? result : -EFAULT;
|
| 935 |
|
|
}
|
| 936 |
|
|
spin_lock_irqsave(&runtime->lock, flags);
|
| 937 |
|
|
}
|
| 938 |
|
|
runtime->appl_ptr += count1;
|
| 939 |
|
|
runtime->appl_ptr %= runtime->buffer_size;
|
| 940 |
|
|
runtime->avail -= count1;
|
| 941 |
|
|
spin_unlock_irqrestore(&runtime->lock, flags);
|
| 942 |
|
|
result += count1;
|
| 943 |
|
|
count -= count1;
|
| 944 |
|
|
}
|
| 945 |
|
|
return result;
|
| 946 |
|
|
}
|
| 947 |
|
|
|
| 948 |
|
|
long snd_rawmidi_kernel_read(struct snd_rawmidi_substream *substream,
|
| 949 |
|
|
unsigned char *buf, long count)
|
| 950 |
|
|
{
|
| 951 |
|
|
snd_rawmidi_input_trigger(substream, 1);
|
| 952 |
|
|
return snd_rawmidi_kernel_read1(substream, buf, count, 1);
|
| 953 |
|
|
}
|
| 954 |
|
|
|
| 955 |
|
|
static ssize_t snd_rawmidi_read(struct file *file, char __user *buf, size_t count,
|
| 956 |
|
|
loff_t *offset)
|
| 957 |
|
|
{
|
| 958 |
|
|
long result;
|
| 959 |
|
|
int count1;
|
| 960 |
|
|
struct snd_rawmidi_file *rfile;
|
| 961 |
|
|
struct snd_rawmidi_substream *substream;
|
| 962 |
|
|
struct snd_rawmidi_runtime *runtime;
|
| 963 |
|
|
|
| 964 |
|
|
rfile = file->private_data;
|
| 965 |
|
|
substream = rfile->input;
|
| 966 |
|
|
if (substream == NULL)
|
| 967 |
|
|
return -EIO;
|
| 968 |
|
|
runtime = substream->runtime;
|
| 969 |
|
|
snd_rawmidi_input_trigger(substream, 1);
|
| 970 |
|
|
result = 0;
|
| 971 |
|
|
while (count > 0) {
|
| 972 |
|
|
spin_lock_irq(&runtime->lock);
|
| 973 |
|
|
while (!snd_rawmidi_ready(substream)) {
|
| 974 |
|
|
wait_queue_t wait;
|
| 975 |
|
|
if ((file->f_flags & O_NONBLOCK) != 0 || result > 0) {
|
| 976 |
|
|
spin_unlock_irq(&runtime->lock);
|
| 977 |
|
|
return result > 0 ? result : -EAGAIN;
|
| 978 |
|
|
}
|
| 979 |
|
|
init_waitqueue_entry(&wait, current);
|
| 980 |
|
|
add_wait_queue(&runtime->sleep, &wait);
|
| 981 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
| 982 |
|
|
spin_unlock_irq(&runtime->lock);
|
| 983 |
|
|
schedule();
|
| 984 |
|
|
remove_wait_queue(&runtime->sleep, &wait);
|
| 985 |
|
|
if (signal_pending(current))
|
| 986 |
|
|
return result > 0 ? result : -ERESTARTSYS;
|
| 987 |
|
|
if (!runtime->avail)
|
| 988 |
|
|
return result > 0 ? result : -EIO;
|
| 989 |
|
|
spin_lock_irq(&runtime->lock);
|
| 990 |
|
|
}
|
| 991 |
|
|
spin_unlock_irq(&runtime->lock);
|
| 992 |
|
|
count1 = snd_rawmidi_kernel_read1(substream,
|
| 993 |
|
|
(unsigned char __force *)buf,
|
| 994 |
|
|
count, 0);
|
| 995 |
|
|
if (count1 < 0)
|
| 996 |
|
|
return result > 0 ? result : count1;
|
| 997 |
|
|
result += count1;
|
| 998 |
|
|
buf += count1;
|
| 999 |
|
|
count -= count1;
|
| 1000 |
|
|
}
|
| 1001 |
|
|
return result;
|
| 1002 |
|
|
}
|
| 1003 |
|
|
|
| 1004 |
|
|
/**
|
| 1005 |
|
|
* snd_rawmidi_transmit_empty - check whether the output buffer is empty
|
| 1006 |
|
|
* @substream: the rawmidi substream
|
| 1007 |
|
|
*
|
| 1008 |
|
|
* Returns 1 if the internal output buffer is empty, 0 if not.
|
| 1009 |
|
|
*/
|
| 1010 |
|
|
int snd_rawmidi_transmit_empty(struct snd_rawmidi_substream *substream)
|
| 1011 |
|
|
{
|
| 1012 |
|
|
struct snd_rawmidi_runtime *runtime = substream->runtime;
|
| 1013 |
|
|
int result;
|
| 1014 |
|
|
unsigned long flags;
|
| 1015 |
|
|
|
| 1016 |
|
|
if (runtime->buffer == NULL) {
|
| 1017 |
|
|
snd_printd("snd_rawmidi_transmit_empty: output is not active!!!\n");
|
| 1018 |
|
|
return 1;
|
| 1019 |
|
|
}
|
| 1020 |
|
|
spin_lock_irqsave(&runtime->lock, flags);
|
| 1021 |
|
|
result = runtime->avail >= runtime->buffer_size;
|
| 1022 |
|
|
spin_unlock_irqrestore(&runtime->lock, flags);
|
| 1023 |
|
|
return result;
|
| 1024 |
|
|
}
|
| 1025 |
|
|
|
| 1026 |
|
|
/**
|
| 1027 |
|
|
* snd_rawmidi_transmit_peek - copy data from the internal buffer
|
| 1028 |
|
|
* @substream: the rawmidi substream
|
| 1029 |
|
|
* @buffer: the buffer pointer
|
| 1030 |
|
|
* @count: data size to transfer
|
| 1031 |
|
|
*
|
| 1032 |
|
|
* Copies data from the internal output buffer to the given buffer.
|
| 1033 |
|
|
*
|
| 1034 |
|
|
* Call this in the interrupt handler when the midi output is ready,
|
| 1035 |
|
|
* and call snd_rawmidi_transmit_ack() after the transmission is
|
| 1036 |
|
|
* finished.
|
| 1037 |
|
|
*
|
| 1038 |
|
|
* Returns the size of copied data, or a negative error code on failure.
|
| 1039 |
|
|
*/
|
| 1040 |
|
|
int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
|
| 1041 |
|
|
unsigned char *buffer, int count)
|
| 1042 |
|
|
{
|
| 1043 |
|
|
unsigned long flags;
|
| 1044 |
|
|
int result, count1;
|
| 1045 |
|
|
struct snd_rawmidi_runtime *runtime = substream->runtime;
|
| 1046 |
|
|
|
| 1047 |
|
|
if (runtime->buffer == NULL) {
|
| 1048 |
|
|
snd_printd("snd_rawmidi_transmit_peek: output is not active!!!\n");
|
| 1049 |
|
|
return -EINVAL;
|
| 1050 |
|
|
}
|
| 1051 |
|
|
result = 0;
|
| 1052 |
|
|
spin_lock_irqsave(&runtime->lock, flags);
|
| 1053 |
|
|
if (runtime->avail >= runtime->buffer_size) {
|
| 1054 |
|
|
/* warning: lowlevel layer MUST trigger down the hardware */
|
| 1055 |
|
|
goto __skip;
|
| 1056 |
|
|
}
|
| 1057 |
|
|
if (count == 1) { /* special case, faster code */
|
| 1058 |
|
|
*buffer = runtime->buffer[runtime->hw_ptr];
|
| 1059 |
|
|
result++;
|
| 1060 |
|
|
} else {
|
| 1061 |
|
|
count1 = runtime->buffer_size - runtime->hw_ptr;
|
| 1062 |
|
|
if (count1 > count)
|
| 1063 |
|
|
count1 = count;
|
| 1064 |
|
|
if (count1 > (int)(runtime->buffer_size - runtime->avail))
|
| 1065 |
|
|
count1 = runtime->buffer_size - runtime->avail;
|
| 1066 |
|
|
memcpy(buffer, runtime->buffer + runtime->hw_ptr, count1);
|
| 1067 |
|
|
count -= count1;
|
| 1068 |
|
|
result += count1;
|
| 1069 |
|
|
if (count > 0) {
|
| 1070 |
|
|
if (count > (int)(runtime->buffer_size - runtime->avail - count1))
|
| 1071 |
|
|
count = runtime->buffer_size - runtime->avail - count1;
|
| 1072 |
|
|
memcpy(buffer + count1, runtime->buffer, count);
|
| 1073 |
|
|
result += count;
|
| 1074 |
|
|
}
|
| 1075 |
|
|
}
|
| 1076 |
|
|
__skip:
|
| 1077 |
|
|
spin_unlock_irqrestore(&runtime->lock, flags);
|
| 1078 |
|
|
return result;
|
| 1079 |
|
|
}
|
| 1080 |
|
|
|
| 1081 |
|
|
/**
|
| 1082 |
|
|
* snd_rawmidi_transmit_ack - acknowledge the transmission
|
| 1083 |
|
|
* @substream: the rawmidi substream
|
| 1084 |
|
|
* @count: the tranferred count
|
| 1085 |
|
|
*
|
| 1086 |
|
|
* Advances the hardware pointer for the internal output buffer with
|
| 1087 |
|
|
* the given size and updates the condition.
|
| 1088 |
|
|
* Call after the transmission is finished.
|
| 1089 |
|
|
*
|
| 1090 |
|
|
* Returns the advanced size if successful, or a negative error code on failure.
|
| 1091 |
|
|
*/
|
| 1092 |
|
|
int snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int count)
|
| 1093 |
|
|
{
|
| 1094 |
|
|
unsigned long flags;
|
| 1095 |
|
|
struct snd_rawmidi_runtime *runtime = substream->runtime;
|
| 1096 |
|
|
|
| 1097 |
|
|
if (runtime->buffer == NULL) {
|
| 1098 |
|
|
snd_printd("snd_rawmidi_transmit_ack: output is not active!!!\n");
|
| 1099 |
|
|
return -EINVAL;
|
| 1100 |
|
|
}
|
| 1101 |
|
|
spin_lock_irqsave(&runtime->lock, flags);
|
| 1102 |
|
|
snd_assert(runtime->avail + count <= runtime->buffer_size, );
|
| 1103 |
|
|
runtime->hw_ptr += count;
|
| 1104 |
|
|
runtime->hw_ptr %= runtime->buffer_size;
|
| 1105 |
|
|
runtime->avail += count;
|
| 1106 |
|
|
substream->bytes += count;
|
| 1107 |
|
|
if (count > 0) {
|
| 1108 |
|
|
if (runtime->drain || snd_rawmidi_ready(substream))
|
| 1109 |
|
|
wake_up(&runtime->sleep);
|
| 1110 |
|
|
}
|
| 1111 |
|
|
spin_unlock_irqrestore(&runtime->lock, flags);
|
| 1112 |
|
|
return count;
|
| 1113 |
|
|
}
|
| 1114 |
|
|
|
| 1115 |
|
|
/**
|
| 1116 |
|
|
* snd_rawmidi_transmit - copy from the buffer to the device
|
| 1117 |
|
|
* @substream: the rawmidi substream
|
| 1118 |
|
|
* @buffer: the buffer pointer
|
| 1119 |
|
|
* @count: the data size to transfer
|
| 1120 |
|
|
*
|
| 1121 |
|
|
* Copies data from the buffer to the device and advances the pointer.
|
| 1122 |
|
|
*
|
| 1123 |
|
|
* Returns the copied size if successful, or a negative error code on failure.
|
| 1124 |
|
|
*/
|
| 1125 |
|
|
int snd_rawmidi_transmit(struct snd_rawmidi_substream *substream,
|
| 1126 |
|
|
unsigned char *buffer, int count)
|
| 1127 |
|
|
{
|
| 1128 |
|
|
count = snd_rawmidi_transmit_peek(substream, buffer, count);
|
| 1129 |
|
|
if (count < 0)
|
| 1130 |
|
|
return count;
|
| 1131 |
|
|
return snd_rawmidi_transmit_ack(substream, count);
|
| 1132 |
|
|
}
|
| 1133 |
|
|
|
| 1134 |
|
|
static long snd_rawmidi_kernel_write1(struct snd_rawmidi_substream *substream,
|
| 1135 |
|
|
const unsigned char *buf, long count, int kernel)
|
| 1136 |
|
|
{
|
| 1137 |
|
|
unsigned long flags;
|
| 1138 |
|
|
long count1, result;
|
| 1139 |
|
|
struct snd_rawmidi_runtime *runtime = substream->runtime;
|
| 1140 |
|
|
|
| 1141 |
|
|
snd_assert(buf != NULL, return -EINVAL);
|
| 1142 |
|
|
snd_assert(runtime->buffer != NULL, return -EINVAL);
|
| 1143 |
|
|
|
| 1144 |
|
|
result = 0;
|
| 1145 |
|
|
spin_lock_irqsave(&runtime->lock, flags);
|
| 1146 |
|
|
if (substream->append) {
|
| 1147 |
|
|
if ((long)runtime->avail < count) {
|
| 1148 |
|
|
spin_unlock_irqrestore(&runtime->lock, flags);
|
| 1149 |
|
|
return -EAGAIN;
|
| 1150 |
|
|
}
|
| 1151 |
|
|
}
|
| 1152 |
|
|
while (count > 0 && runtime->avail > 0) {
|
| 1153 |
|
|
count1 = runtime->buffer_size - runtime->appl_ptr;
|
| 1154 |
|
|
if (count1 > count)
|
| 1155 |
|
|
count1 = count;
|
| 1156 |
|
|
if (count1 > (long)runtime->avail)
|
| 1157 |
|
|
count1 = runtime->avail;
|
| 1158 |
|
|
if (kernel) {
|
| 1159 |
|
|
memcpy(runtime->buffer + runtime->appl_ptr, buf, count1);
|
| 1160 |
|
|
} else {
|
| 1161 |
|
|
spin_unlock_irqrestore(&runtime->lock, flags);
|
| 1162 |
|
|
if (copy_from_user(runtime->buffer + runtime->appl_ptr,
|
| 1163 |
|
|
(char __user *)buf, count1)) {
|
| 1164 |
|
|
spin_lock_irqsave(&runtime->lock, flags);
|
| 1165 |
|
|
result = result > 0 ? result : -EFAULT;
|
| 1166 |
|
|
goto __end;
|
| 1167 |
|
|
}
|
| 1168 |
|
|
spin_lock_irqsave(&runtime->lock, flags);
|
| 1169 |
|
|
}
|
| 1170 |
|
|
runtime->appl_ptr += count1;
|
| 1171 |
|
|
runtime->appl_ptr %= runtime->buffer_size;
|
| 1172 |
|
|
runtime->avail -= count1;
|
| 1173 |
|
|
result += count1;
|
| 1174 |
|
|
buf += count1;
|
| 1175 |
|
|
count -= count1;
|
| 1176 |
|
|
}
|
| 1177 |
|
|
__end:
|
| 1178 |
|
|
count1 = runtime->avail < runtime->buffer_size;
|
| 1179 |
|
|
spin_unlock_irqrestore(&runtime->lock, flags);
|
| 1180 |
|
|
if (count1)
|
| 1181 |
|
|
snd_rawmidi_output_trigger(substream, 1);
|
| 1182 |
|
|
return result;
|
| 1183 |
|
|
}
|
| 1184 |
|
|
|
| 1185 |
|
|
long snd_rawmidi_kernel_write(struct snd_rawmidi_substream *substream,
|
| 1186 |
|
|
const unsigned char *buf, long count)
|
| 1187 |
|
|
{
|
| 1188 |
|
|
return snd_rawmidi_kernel_write1(substream, buf, count, 1);
|
| 1189 |
|
|
}
|
| 1190 |
|
|
|
| 1191 |
|
|
static ssize_t snd_rawmidi_write(struct file *file, const char __user *buf,
|
| 1192 |
|
|
size_t count, loff_t *offset)
|
| 1193 |
|
|
{
|
| 1194 |
|
|
long result, timeout;
|
| 1195 |
|
|
int count1;
|
| 1196 |
|
|
struct snd_rawmidi_file *rfile;
|
| 1197 |
|
|
struct snd_rawmidi_runtime *runtime;
|
| 1198 |
|
|
struct snd_rawmidi_substream *substream;
|
| 1199 |
|
|
|
| 1200 |
|
|
rfile = file->private_data;
|
| 1201 |
|
|
substream = rfile->output;
|
| 1202 |
|
|
runtime = substream->runtime;
|
| 1203 |
|
|
/* we cannot put an atomic message to our buffer */
|
| 1204 |
|
|
if (substream->append && count > runtime->buffer_size)
|
| 1205 |
|
|
return -EIO;
|
| 1206 |
|
|
result = 0;
|
| 1207 |
|
|
while (count > 0) {
|
| 1208 |
|
|
spin_lock_irq(&runtime->lock);
|
| 1209 |
|
|
while (!snd_rawmidi_ready_append(substream, count)) {
|
| 1210 |
|
|
wait_queue_t wait;
|
| 1211 |
|
|
if (file->f_flags & O_NONBLOCK) {
|
| 1212 |
|
|
spin_unlock_irq(&runtime->lock);
|
| 1213 |
|
|
return result > 0 ? result : -EAGAIN;
|
| 1214 |
|
|
}
|
| 1215 |
|
|
init_waitqueue_entry(&wait, current);
|
| 1216 |
|
|
add_wait_queue(&runtime->sleep, &wait);
|
| 1217 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
| 1218 |
|
|
spin_unlock_irq(&runtime->lock);
|
| 1219 |
|
|
timeout = schedule_timeout(30 * HZ);
|
| 1220 |
|
|
remove_wait_queue(&runtime->sleep, &wait);
|
| 1221 |
|
|
if (signal_pending(current))
|
| 1222 |
|
|
return result > 0 ? result : -ERESTARTSYS;
|
| 1223 |
|
|
if (!runtime->avail && !timeout)
|
| 1224 |
|
|
return result > 0 ? result : -EIO;
|
| 1225 |
|
|
spin_lock_irq(&runtime->lock);
|
| 1226 |
|
|
}
|
| 1227 |
|
|
spin_unlock_irq(&runtime->lock);
|
| 1228 |
|
|
count1 = snd_rawmidi_kernel_write1(substream,
|
| 1229 |
|
|
(unsigned char __force *)buf,
|
| 1230 |
|
|
count, 0);
|
| 1231 |
|
|
if (count1 < 0)
|
| 1232 |
|
|
return result > 0 ? result : count1;
|
| 1233 |
|
|
result += count1;
|
| 1234 |
|
|
buf += count1;
|
| 1235 |
|
|
if ((size_t)count1 < count && (file->f_flags & O_NONBLOCK))
|
| 1236 |
|
|
break;
|
| 1237 |
|
|
count -= count1;
|
| 1238 |
|
|
}
|
| 1239 |
|
|
if (file->f_flags & O_SYNC) {
|
| 1240 |
|
|
spin_lock_irq(&runtime->lock);
|
| 1241 |
|
|
while (runtime->avail != runtime->buffer_size) {
|
| 1242 |
|
|
wait_queue_t wait;
|
| 1243 |
|
|
unsigned int last_avail = runtime->avail;
|
| 1244 |
|
|
init_waitqueue_entry(&wait, current);
|
| 1245 |
|
|
add_wait_queue(&runtime->sleep, &wait);
|
| 1246 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
| 1247 |
|
|
spin_unlock_irq(&runtime->lock);
|
| 1248 |
|
|
timeout = schedule_timeout(30 * HZ);
|
| 1249 |
|
|
remove_wait_queue(&runtime->sleep, &wait);
|
| 1250 |
|
|
if (signal_pending(current))
|
| 1251 |
|
|
return result > 0 ? result : -ERESTARTSYS;
|
| 1252 |
|
|
if (runtime->avail == last_avail && !timeout)
|
| 1253 |
|
|
return result > 0 ? result : -EIO;
|
| 1254 |
|
|
spin_lock_irq(&runtime->lock);
|
| 1255 |
|
|
}
|
| 1256 |
|
|
spin_unlock_irq(&runtime->lock);
|
| 1257 |
|
|
}
|
| 1258 |
|
|
return result;
|
| 1259 |
|
|
}
|
| 1260 |
|
|
|
| 1261 |
|
|
static unsigned int snd_rawmidi_poll(struct file *file, poll_table * wait)
|
| 1262 |
|
|
{
|
| 1263 |
|
|
struct snd_rawmidi_file *rfile;
|
| 1264 |
|
|
struct snd_rawmidi_runtime *runtime;
|
| 1265 |
|
|
unsigned int mask;
|
| 1266 |
|
|
|
| 1267 |
|
|
rfile = file->private_data;
|
| 1268 |
|
|
if (rfile->input != NULL) {
|
| 1269 |
|
|
runtime = rfile->input->runtime;
|
| 1270 |
|
|
snd_rawmidi_input_trigger(rfile->input, 1);
|
| 1271 |
|
|
poll_wait(file, &runtime->sleep, wait);
|
| 1272 |
|
|
}
|
| 1273 |
|
|
if (rfile->output != NULL) {
|
| 1274 |
|
|
runtime = rfile->output->runtime;
|
| 1275 |
|
|
poll_wait(file, &runtime->sleep, wait);
|
| 1276 |
|
|
}
|
| 1277 |
|
|
mask = 0;
|
| 1278 |
|
|
if (rfile->input != NULL) {
|
| 1279 |
|
|
if (snd_rawmidi_ready(rfile->input))
|
| 1280 |
|
|
mask |= POLLIN | POLLRDNORM;
|
| 1281 |
|
|
}
|
| 1282 |
|
|
if (rfile->output != NULL) {
|
| 1283 |
|
|
if (snd_rawmidi_ready(rfile->output))
|
| 1284 |
|
|
mask |= POLLOUT | POLLWRNORM;
|
| 1285 |
|
|
}
|
| 1286 |
|
|
return mask;
|
| 1287 |
|
|
}
|
| 1288 |
|
|
|
| 1289 |
|
|
/*
|
| 1290 |
|
|
*/
|
| 1291 |
|
|
#ifdef CONFIG_COMPAT
|
| 1292 |
|
|
#include "rawmidi_compat.c"
|
| 1293 |
|
|
#else
|
| 1294 |
|
|
#define snd_rawmidi_ioctl_compat NULL
|
| 1295 |
|
|
#endif
|
| 1296 |
|
|
|
| 1297 |
|
|
/*
|
| 1298 |
|
|
|
| 1299 |
|
|
*/
|
| 1300 |
|
|
|
| 1301 |
|
|
static void snd_rawmidi_proc_info_read(struct snd_info_entry *entry,
|
| 1302 |
|
|
struct snd_info_buffer *buffer)
|
| 1303 |
|
|
{
|
| 1304 |
|
|
struct snd_rawmidi *rmidi;
|
| 1305 |
|
|
struct snd_rawmidi_substream *substream;
|
| 1306 |
|
|
struct snd_rawmidi_runtime *runtime;
|
| 1307 |
|
|
|
| 1308 |
|
|
rmidi = entry->private_data;
|
| 1309 |
|
|
snd_iprintf(buffer, "%s\n\n", rmidi->name);
|
| 1310 |
|
|
mutex_lock(&rmidi->open_mutex);
|
| 1311 |
|
|
if (rmidi->info_flags & SNDRV_RAWMIDI_INFO_OUTPUT) {
|
| 1312 |
|
|
list_for_each_entry(substream,
|
| 1313 |
|
|
&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams,
|
| 1314 |
|
|
list) {
|
| 1315 |
|
|
snd_iprintf(buffer,
|
| 1316 |
|
|
"Output %d\n"
|
| 1317 |
|
|
" Tx bytes : %lu\n",
|
| 1318 |
|
|
substream->number,
|
| 1319 |
|
|
(unsigned long) substream->bytes);
|
| 1320 |
|
|
if (substream->opened) {
|
| 1321 |
|
|
runtime = substream->runtime;
|
| 1322 |
|
|
snd_iprintf(buffer,
|
| 1323 |
|
|
" Mode : %s\n"
|
| 1324 |
|
|
" Buffer size : %lu\n"
|
| 1325 |
|
|
" Avail : %lu\n",
|
| 1326 |
|
|
runtime->oss ? "OSS compatible" : "native",
|
| 1327 |
|
|
(unsigned long) runtime->buffer_size,
|
| 1328 |
|
|
(unsigned long) runtime->avail);
|
| 1329 |
|
|
}
|
| 1330 |
|
|
}
|
| 1331 |
|
|
}
|
| 1332 |
|
|
if (rmidi->info_flags & SNDRV_RAWMIDI_INFO_INPUT) {
|
| 1333 |
|
|
list_for_each_entry(substream,
|
| 1334 |
|
|
&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams,
|
| 1335 |
|
|
list) {
|
| 1336 |
|
|
snd_iprintf(buffer,
|
| 1337 |
|
|
"Input %d\n"
|
| 1338 |
|
|
" Rx bytes : %lu\n",
|
| 1339 |
|
|
substream->number,
|
| 1340 |
|
|
(unsigned long) substream->bytes);
|
| 1341 |
|
|
if (substream->opened) {
|
| 1342 |
|
|
runtime = substream->runtime;
|
| 1343 |
|
|
snd_iprintf(buffer,
|
| 1344 |
|
|
" Buffer size : %lu\n"
|
| 1345 |
|
|
" Avail : %lu\n"
|
| 1346 |
|
|
" Overruns : %lu\n",
|
| 1347 |
|
|
(unsigned long) runtime->buffer_size,
|
| 1348 |
|
|
(unsigned long) runtime->avail,
|
| 1349 |
|
|
(unsigned long) runtime->xruns);
|
| 1350 |
|
|
}
|
| 1351 |
|
|
}
|
| 1352 |
|
|
}
|
| 1353 |
|
|
mutex_unlock(&rmidi->open_mutex);
|
| 1354 |
|
|
}
|
| 1355 |
|
|
|
| 1356 |
|
|
/*
|
| 1357 |
|
|
* Register functions
|
| 1358 |
|
|
*/
|
| 1359 |
|
|
|
| 1360 |
|
|
static const struct file_operations snd_rawmidi_f_ops =
|
| 1361 |
|
|
{
|
| 1362 |
|
|
.owner = THIS_MODULE,
|
| 1363 |
|
|
.read = snd_rawmidi_read,
|
| 1364 |
|
|
.write = snd_rawmidi_write,
|
| 1365 |
|
|
.open = snd_rawmidi_open,
|
| 1366 |
|
|
.release = snd_rawmidi_release,
|
| 1367 |
|
|
.poll = snd_rawmidi_poll,
|
| 1368 |
|
|
.unlocked_ioctl = snd_rawmidi_ioctl,
|
| 1369 |
|
|
.compat_ioctl = snd_rawmidi_ioctl_compat,
|
| 1370 |
|
|
};
|
| 1371 |
|
|
|
| 1372 |
|
|
static int snd_rawmidi_alloc_substreams(struct snd_rawmidi *rmidi,
|
| 1373 |
|
|
struct snd_rawmidi_str *stream,
|
| 1374 |
|
|
int direction,
|
| 1375 |
|
|
int count)
|
| 1376 |
|
|
{
|
| 1377 |
|
|
struct snd_rawmidi_substream *substream;
|
| 1378 |
|
|
int idx;
|
| 1379 |
|
|
|
| 1380 |
|
|
for (idx = 0; idx < count; idx++) {
|
| 1381 |
|
|
substream = kzalloc(sizeof(*substream), GFP_KERNEL);
|
| 1382 |
|
|
if (substream == NULL) {
|
| 1383 |
|
|
snd_printk(KERN_ERR "rawmidi: cannot allocate substream\n");
|
| 1384 |
|
|
return -ENOMEM;
|
| 1385 |
|
|
}
|
| 1386 |
|
|
substream->stream = direction;
|
| 1387 |
|
|
substream->number = idx;
|
| 1388 |
|
|
substream->rmidi = rmidi;
|
| 1389 |
|
|
substream->pstr = stream;
|
| 1390 |
|
|
list_add_tail(&substream->list, &stream->substreams);
|
| 1391 |
|
|
stream->substream_count++;
|
| 1392 |
|
|
}
|
| 1393 |
|
|
return 0;
|
| 1394 |
|
|
}
|
| 1395 |
|
|
|
| 1396 |
|
|
/**
|
| 1397 |
|
|
* snd_rawmidi_new - create a rawmidi instance
|
| 1398 |
|
|
* @card: the card instance
|
| 1399 |
|
|
* @id: the id string
|
| 1400 |
|
|
* @device: the device index
|
| 1401 |
|
|
* @output_count: the number of output streams
|
| 1402 |
|
|
* @input_count: the number of input streams
|
| 1403 |
|
|
* @rrawmidi: the pointer to store the new rawmidi instance
|
| 1404 |
|
|
*
|
| 1405 |
|
|
* Creates a new rawmidi instance.
|
| 1406 |
|
|
* Use snd_rawmidi_set_ops() to set the operators to the new instance.
|
| 1407 |
|
|
*
|
| 1408 |
|
|
* Returns zero if successful, or a negative error code on failure.
|
| 1409 |
|
|
*/
|
| 1410 |
|
|
int snd_rawmidi_new(struct snd_card *card, char *id, int device,
|
| 1411 |
|
|
int output_count, int input_count,
|
| 1412 |
|
|
struct snd_rawmidi ** rrawmidi)
|
| 1413 |
|
|
{
|
| 1414 |
|
|
struct snd_rawmidi *rmidi;
|
| 1415 |
|
|
int err;
|
| 1416 |
|
|
static struct snd_device_ops ops = {
|
| 1417 |
|
|
.dev_free = snd_rawmidi_dev_free,
|
| 1418 |
|
|
.dev_register = snd_rawmidi_dev_register,
|
| 1419 |
|
|
.dev_disconnect = snd_rawmidi_dev_disconnect,
|
| 1420 |
|
|
};
|
| 1421 |
|
|
|
| 1422 |
|
|
snd_assert(rrawmidi != NULL, return -EINVAL);
|
| 1423 |
|
|
*rrawmidi = NULL;
|
| 1424 |
|
|
snd_assert(card != NULL, return -ENXIO);
|
| 1425 |
|
|
rmidi = kzalloc(sizeof(*rmidi), GFP_KERNEL);
|
| 1426 |
|
|
if (rmidi == NULL) {
|
| 1427 |
|
|
snd_printk(KERN_ERR "rawmidi: cannot allocate\n");
|
| 1428 |
|
|
return -ENOMEM;
|
| 1429 |
|
|
}
|
| 1430 |
|
|
rmidi->card = card;
|
| 1431 |
|
|
rmidi->device = device;
|
| 1432 |
|
|
mutex_init(&rmidi->open_mutex);
|
| 1433 |
|
|
init_waitqueue_head(&rmidi->open_wait);
|
| 1434 |
|
|
INIT_LIST_HEAD(&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams);
|
| 1435 |
|
|
INIT_LIST_HEAD(&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams);
|
| 1436 |
|
|
|
| 1437 |
|
|
if (id != NULL)
|
| 1438 |
|
|
strlcpy(rmidi->id, id, sizeof(rmidi->id));
|
| 1439 |
|
|
if ((err = snd_rawmidi_alloc_substreams(rmidi,
|
| 1440 |
|
|
&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT],
|
| 1441 |
|
|
SNDRV_RAWMIDI_STREAM_INPUT,
|
| 1442 |
|
|
input_count)) < 0) {
|
| 1443 |
|
|
snd_rawmidi_free(rmidi);
|
| 1444 |
|
|
return err;
|
| 1445 |
|
|
}
|
| 1446 |
|
|
if ((err = snd_rawmidi_alloc_substreams(rmidi,
|
| 1447 |
|
|
&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT],
|
| 1448 |
|
|
SNDRV_RAWMIDI_STREAM_OUTPUT,
|
| 1449 |
|
|
output_count)) < 0) {
|
| 1450 |
|
|
snd_rawmidi_free(rmidi);
|
| 1451 |
|
|
return err;
|
| 1452 |
|
|
}
|
| 1453 |
|
|
if ((err = snd_device_new(card, SNDRV_DEV_RAWMIDI, rmidi, &ops)) < 0) {
|
| 1454 |
|
|
snd_rawmidi_free(rmidi);
|
| 1455 |
|
|
return err;
|
| 1456 |
|
|
}
|
| 1457 |
|
|
*rrawmidi = rmidi;
|
| 1458 |
|
|
return 0;
|
| 1459 |
|
|
}
|
| 1460 |
|
|
|
| 1461 |
|
|
static void snd_rawmidi_free_substreams(struct snd_rawmidi_str *stream)
|
| 1462 |
|
|
{
|
| 1463 |
|
|
struct snd_rawmidi_substream *substream;
|
| 1464 |
|
|
|
| 1465 |
|
|
while (!list_empty(&stream->substreams)) {
|
| 1466 |
|
|
substream = list_entry(stream->substreams.next, struct snd_rawmidi_substream, list);
|
| 1467 |
|
|
list_del(&substream->list);
|
| 1468 |
|
|
kfree(substream);
|
| 1469 |
|
|
}
|
| 1470 |
|
|
}
|
| 1471 |
|
|
|
| 1472 |
|
|
static int snd_rawmidi_free(struct snd_rawmidi *rmidi)
|
| 1473 |
|
|
{
|
| 1474 |
|
|
snd_assert(rmidi != NULL, return -ENXIO);
|
| 1475 |
|
|
|
| 1476 |
|
|
snd_info_free_entry(rmidi->proc_entry);
|
| 1477 |
|
|
rmidi->proc_entry = NULL;
|
| 1478 |
|
|
mutex_lock(®ister_mutex);
|
| 1479 |
|
|
if (rmidi->ops && rmidi->ops->dev_unregister)
|
| 1480 |
|
|
rmidi->ops->dev_unregister(rmidi);
|
| 1481 |
|
|
mutex_unlock(®ister_mutex);
|
| 1482 |
|
|
|
| 1483 |
|
|
snd_rawmidi_free_substreams(&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]);
|
| 1484 |
|
|
snd_rawmidi_free_substreams(&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]);
|
| 1485 |
|
|
if (rmidi->private_free)
|
| 1486 |
|
|
rmidi->private_free(rmidi);
|
| 1487 |
|
|
kfree(rmidi);
|
| 1488 |
|
|
return 0;
|
| 1489 |
|
|
}
|
| 1490 |
|
|
|
| 1491 |
|
|
static int snd_rawmidi_dev_free(struct snd_device *device)
|
| 1492 |
|
|
{
|
| 1493 |
|
|
struct snd_rawmidi *rmidi = device->device_data;
|
| 1494 |
|
|
return snd_rawmidi_free(rmidi);
|
| 1495 |
|
|
}
|
| 1496 |
|
|
|
| 1497 |
|
|
#if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE))
|
| 1498 |
|
|
static void snd_rawmidi_dev_seq_free(struct snd_seq_device *device)
|
| 1499 |
|
|
{
|
| 1500 |
|
|
struct snd_rawmidi *rmidi = device->private_data;
|
| 1501 |
|
|
rmidi->seq_dev = NULL;
|
| 1502 |
|
|
}
|
| 1503 |
|
|
#endif
|
| 1504 |
|
|
|
| 1505 |
|
|
static int snd_rawmidi_dev_register(struct snd_device *device)
|
| 1506 |
|
|
{
|
| 1507 |
|
|
int err;
|
| 1508 |
|
|
struct snd_info_entry *entry;
|
| 1509 |
|
|
char name[16];
|
| 1510 |
|
|
struct snd_rawmidi *rmidi = device->device_data;
|
| 1511 |
|
|
|
| 1512 |
|
|
if (rmidi->device >= SNDRV_RAWMIDI_DEVICES)
|
| 1513 |
|
|
return -ENOMEM;
|
| 1514 |
|
|
mutex_lock(®ister_mutex);
|
| 1515 |
|
|
if (snd_rawmidi_search(rmidi->card, rmidi->device)) {
|
| 1516 |
|
|
mutex_unlock(®ister_mutex);
|
| 1517 |
|
|
return -EBUSY;
|
| 1518 |
|
|
}
|
| 1519 |
|
|
list_add_tail(&rmidi->list, &snd_rawmidi_devices);
|
| 1520 |
|
|
sprintf(name, "midiC%iD%i", rmidi->card->number, rmidi->device);
|
| 1521 |
|
|
if ((err = snd_register_device(SNDRV_DEVICE_TYPE_RAWMIDI,
|
| 1522 |
|
|
rmidi->card, rmidi->device,
|
| 1523 |
|
|
&snd_rawmidi_f_ops, rmidi, name)) < 0) {
|
| 1524 |
|
|
snd_printk(KERN_ERR "unable to register rawmidi device %i:%i\n", rmidi->card->number, rmidi->device);
|
| 1525 |
|
|
list_del(&rmidi->list);
|
| 1526 |
|
|
mutex_unlock(®ister_mutex);
|
| 1527 |
|
|
return err;
|
| 1528 |
|
|
}
|
| 1529 |
|
|
if (rmidi->ops && rmidi->ops->dev_register &&
|
| 1530 |
|
|
(err = rmidi->ops->dev_register(rmidi)) < 0) {
|
| 1531 |
|
|
snd_unregister_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device);
|
| 1532 |
|
|
list_del(&rmidi->list);
|
| 1533 |
|
|
mutex_unlock(®ister_mutex);
|
| 1534 |
|
|
return err;
|
| 1535 |
|
|
}
|
| 1536 |
|
|
#ifdef CONFIG_SND_OSSEMUL
|
| 1537 |
|
|
rmidi->ossreg = 0;
|
| 1538 |
|
|
if ((int)rmidi->device == midi_map[rmidi->card->number]) {
|
| 1539 |
|
|
if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI,
|
| 1540 |
|
|
rmidi->card, 0, &snd_rawmidi_f_ops,
|
| 1541 |
|
|
rmidi, name) < 0) {
|
| 1542 |
|
|
snd_printk(KERN_ERR "unable to register OSS rawmidi device %i:%i\n", rmidi->card->number, 0);
|
| 1543 |
|
|
} else {
|
| 1544 |
|
|
rmidi->ossreg++;
|
| 1545 |
|
|
#ifdef SNDRV_OSS_INFO_DEV_MIDI
|
| 1546 |
|
|
snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIDI, rmidi->card->number, rmidi->name);
|
| 1547 |
|
|
#endif
|
| 1548 |
|
|
}
|
| 1549 |
|
|
}
|
| 1550 |
|
|
if ((int)rmidi->device == amidi_map[rmidi->card->number]) {
|
| 1551 |
|
|
if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI,
|
| 1552 |
|
|
rmidi->card, 1, &snd_rawmidi_f_ops,
|
| 1553 |
|
|
rmidi, name) < 0) {
|
| 1554 |
|
|
snd_printk(KERN_ERR "unable to register OSS rawmidi device %i:%i\n", rmidi->card->number, 1);
|
| 1555 |
|
|
} else {
|
| 1556 |
|
|
rmidi->ossreg++;
|
| 1557 |
|
|
}
|
| 1558 |
|
|
}
|
| 1559 |
|
|
#endif /* CONFIG_SND_OSSEMUL */
|
| 1560 |
|
|
mutex_unlock(®ister_mutex);
|
| 1561 |
|
|
sprintf(name, "midi%d", rmidi->device);
|
| 1562 |
|
|
entry = snd_info_create_card_entry(rmidi->card, name, rmidi->card->proc_root);
|
| 1563 |
|
|
if (entry) {
|
| 1564 |
|
|
entry->private_data = rmidi;
|
| 1565 |
|
|
entry->c.text.read = snd_rawmidi_proc_info_read;
|
| 1566 |
|
|
if (snd_info_register(entry) < 0) {
|
| 1567 |
|
|
snd_info_free_entry(entry);
|
| 1568 |
|
|
entry = NULL;
|
| 1569 |
|
|
}
|
| 1570 |
|
|
}
|
| 1571 |
|
|
rmidi->proc_entry = entry;
|
| 1572 |
|
|
#if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE))
|
| 1573 |
|
|
if (!rmidi->ops || !rmidi->ops->dev_register) { /* own registration mechanism */
|
| 1574 |
|
|
if (snd_seq_device_new(rmidi->card, rmidi->device, SNDRV_SEQ_DEV_ID_MIDISYNTH, 0, &rmidi->seq_dev) >= 0) {
|
| 1575 |
|
|
rmidi->seq_dev->private_data = rmidi;
|
| 1576 |
|
|
rmidi->seq_dev->private_free = snd_rawmidi_dev_seq_free;
|
| 1577 |
|
|
sprintf(rmidi->seq_dev->name, "MIDI %d-%d", rmidi->card->number, rmidi->device);
|
| 1578 |
|
|
snd_device_register(rmidi->card, rmidi->seq_dev);
|
| 1579 |
|
|
}
|
| 1580 |
|
|
}
|
| 1581 |
|
|
#endif
|
| 1582 |
|
|
return 0;
|
| 1583 |
|
|
}
|
| 1584 |
|
|
|
| 1585 |
|
|
static int snd_rawmidi_dev_disconnect(struct snd_device *device)
|
| 1586 |
|
|
{
|
| 1587 |
|
|
struct snd_rawmidi *rmidi = device->device_data;
|
| 1588 |
|
|
|
| 1589 |
|
|
mutex_lock(®ister_mutex);
|
| 1590 |
|
|
list_del_init(&rmidi->list);
|
| 1591 |
|
|
#ifdef CONFIG_SND_OSSEMUL
|
| 1592 |
|
|
if (rmidi->ossreg) {
|
| 1593 |
|
|
if ((int)rmidi->device == midi_map[rmidi->card->number]) {
|
| 1594 |
|
|
snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, rmidi->card, 0);
|
| 1595 |
|
|
#ifdef SNDRV_OSS_INFO_DEV_MIDI
|
| 1596 |
|
|
snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIDI, rmidi->card->number);
|
| 1597 |
|
|
#endif
|
| 1598 |
|
|
}
|
| 1599 |
|
|
if ((int)rmidi->device == amidi_map[rmidi->card->number])
|
| 1600 |
|
|
snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, rmidi->card, 1);
|
| 1601 |
|
|
rmidi->ossreg = 0;
|
| 1602 |
|
|
}
|
| 1603 |
|
|
#endif /* CONFIG_SND_OSSEMUL */
|
| 1604 |
|
|
snd_unregister_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device);
|
| 1605 |
|
|
mutex_unlock(®ister_mutex);
|
| 1606 |
|
|
return 0;
|
| 1607 |
|
|
}
|
| 1608 |
|
|
|
| 1609 |
|
|
/**
|
| 1610 |
|
|
* snd_rawmidi_set_ops - set the rawmidi operators
|
| 1611 |
|
|
* @rmidi: the rawmidi instance
|
| 1612 |
|
|
* @stream: the stream direction, SNDRV_RAWMIDI_STREAM_XXX
|
| 1613 |
|
|
* @ops: the operator table
|
| 1614 |
|
|
*
|
| 1615 |
|
|
* Sets the rawmidi operators for the given stream direction.
|
| 1616 |
|
|
*/
|
| 1617 |
|
|
void snd_rawmidi_set_ops(struct snd_rawmidi *rmidi, int stream,
|
| 1618 |
|
|
struct snd_rawmidi_ops *ops)
|
| 1619 |
|
|
{
|
| 1620 |
|
|
struct snd_rawmidi_substream *substream;
|
| 1621 |
|
|
|
| 1622 |
|
|
list_for_each_entry(substream, &rmidi->streams[stream].substreams, list)
|
| 1623 |
|
|
substream->ops = ops;
|
| 1624 |
|
|
}
|
| 1625 |
|
|
|
| 1626 |
|
|
/*
|
| 1627 |
|
|
* ENTRY functions
|
| 1628 |
|
|
*/
|
| 1629 |
|
|
|
| 1630 |
|
|
static int __init alsa_rawmidi_init(void)
|
| 1631 |
|
|
{
|
| 1632 |
|
|
|
| 1633 |
|
|
snd_ctl_register_ioctl(snd_rawmidi_control_ioctl);
|
| 1634 |
|
|
snd_ctl_register_ioctl_compat(snd_rawmidi_control_ioctl);
|
| 1635 |
|
|
#ifdef CONFIG_SND_OSSEMUL
|
| 1636 |
|
|
{ int i;
|
| 1637 |
|
|
/* check device map table */
|
| 1638 |
|
|
for (i = 0; i < SNDRV_CARDS; i++) {
|
| 1639 |
|
|
if (midi_map[i] < 0 || midi_map[i] >= SNDRV_RAWMIDI_DEVICES) {
|
| 1640 |
|
|
snd_printk(KERN_ERR "invalid midi_map[%d] = %d\n", i, midi_map[i]);
|
| 1641 |
|
|
midi_map[i] = 0;
|
| 1642 |
|
|
}
|
| 1643 |
|
|
if (amidi_map[i] < 0 || amidi_map[i] >= SNDRV_RAWMIDI_DEVICES) {
|
| 1644 |
|
|
snd_printk(KERN_ERR "invalid amidi_map[%d] = %d\n", i, amidi_map[i]);
|
| 1645 |
|
|
amidi_map[i] = 1;
|
| 1646 |
|
|
}
|
| 1647 |
|
|
}
|
| 1648 |
|
|
}
|
| 1649 |
|
|
#endif /* CONFIG_SND_OSSEMUL */
|
| 1650 |
|
|
return 0;
|
| 1651 |
|
|
}
|
| 1652 |
|
|
|
| 1653 |
|
|
static void __exit alsa_rawmidi_exit(void)
|
| 1654 |
|
|
{
|
| 1655 |
|
|
snd_ctl_unregister_ioctl(snd_rawmidi_control_ioctl);
|
| 1656 |
|
|
snd_ctl_unregister_ioctl_compat(snd_rawmidi_control_ioctl);
|
| 1657 |
|
|
}
|
| 1658 |
|
|
|
| 1659 |
|
|
module_init(alsa_rawmidi_init)
|
| 1660 |
|
|
module_exit(alsa_rawmidi_exit)
|
| 1661 |
|
|
|
| 1662 |
|
|
EXPORT_SYMBOL(snd_rawmidi_output_params);
|
| 1663 |
|
|
EXPORT_SYMBOL(snd_rawmidi_input_params);
|
| 1664 |
|
|
EXPORT_SYMBOL(snd_rawmidi_drop_output);
|
| 1665 |
|
|
EXPORT_SYMBOL(snd_rawmidi_drain_output);
|
| 1666 |
|
|
EXPORT_SYMBOL(snd_rawmidi_drain_input);
|
| 1667 |
|
|
EXPORT_SYMBOL(snd_rawmidi_receive);
|
| 1668 |
|
|
EXPORT_SYMBOL(snd_rawmidi_transmit_empty);
|
| 1669 |
|
|
EXPORT_SYMBOL(snd_rawmidi_transmit_peek);
|
| 1670 |
|
|
EXPORT_SYMBOL(snd_rawmidi_transmit_ack);
|
| 1671 |
|
|
EXPORT_SYMBOL(snd_rawmidi_transmit);
|
| 1672 |
|
|
EXPORT_SYMBOL(snd_rawmidi_new);
|
| 1673 |
|
|
EXPORT_SYMBOL(snd_rawmidi_set_ops);
|
| 1674 |
|
|
EXPORT_SYMBOL(snd_rawmidi_info_select);
|
| 1675 |
|
|
EXPORT_SYMBOL(snd_rawmidi_kernel_open);
|
| 1676 |
|
|
EXPORT_SYMBOL(snd_rawmidi_kernel_release);
|
| 1677 |
|
|
EXPORT_SYMBOL(snd_rawmidi_kernel_read);
|
| 1678 |
|
|
EXPORT_SYMBOL(snd_rawmidi_kernel_write);
|
