Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
new file mode 100644
index 0000000..edba411
--- /dev/null
+++ b/sound/core/rawmidi.c
@@ -0,0 +1,1680 @@
+/*
+ * Abstract layer for MIDI v1.0 stream
+ * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <linux/major.h>
+#include <linux/init.h>
+#include <linux/smp_lock.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+#include <linux/wait.h>
+#include <linux/moduleparam.h>
+#include <linux/delay.h>
+#include <linux/wait.h>
+#include <sound/rawmidi.h>
+#include <sound/info.h>
+#include <sound/control.h>
+#include <sound/minors.h>
+#include <sound/initval.h>
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
+MODULE_DESCRIPTION("Midlevel RawMidi code for ALSA.");
+MODULE_LICENSE("GPL");
+
+#ifdef CONFIG_SND_OSSEMUL
+static int midi_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 0};
+static int amidi_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1};
+module_param_array(midi_map, int, NULL, 0444);
+MODULE_PARM_DESC(midi_map, "Raw MIDI device number assigned to 1st OSS device.");
+module_param_array(amidi_map, int, NULL, 0444);
+MODULE_PARM_DESC(amidi_map, "Raw MIDI device number assigned to 2nd OSS device.");
+#endif /* CONFIG_SND_OSSEMUL */
+
+static int snd_rawmidi_free(snd_rawmidi_t *rawmidi);
+static int snd_rawmidi_dev_free(snd_device_t *device);
+static int snd_rawmidi_dev_register(snd_device_t *device);
+static int snd_rawmidi_dev_disconnect(snd_device_t *device);
+static int snd_rawmidi_dev_unregister(snd_device_t *device);
+
+static snd_rawmidi_t *snd_rawmidi_devices[SNDRV_CARDS * SNDRV_RAWMIDI_DEVICES];
+
+static DECLARE_MUTEX(register_mutex);
+
+static inline unsigned short snd_rawmidi_file_flags(struct file *file)
+{
+ switch (file->f_mode & (FMODE_READ | FMODE_WRITE)) {
+ case FMODE_WRITE:
+ return SNDRV_RAWMIDI_LFLG_OUTPUT;
+ case FMODE_READ:
+ return SNDRV_RAWMIDI_LFLG_INPUT;
+ default:
+ return SNDRV_RAWMIDI_LFLG_OPEN;
+ }
+}
+
+static inline int snd_rawmidi_ready(snd_rawmidi_substream_t * substream)
+{
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+ return runtime->avail >= runtime->avail_min;
+}
+
+static inline int snd_rawmidi_ready_append(snd_rawmidi_substream_t * substream, size_t count)
+{
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+ return runtime->avail >= runtime->avail_min &&
+ (!substream->append || runtime->avail >= count);
+}
+
+static void snd_rawmidi_input_event_tasklet(unsigned long data)
+{
+ snd_rawmidi_substream_t *substream = (snd_rawmidi_substream_t *)data;
+ substream->runtime->event(substream);
+}
+
+static void snd_rawmidi_output_trigger_tasklet(unsigned long data)
+{
+ snd_rawmidi_substream_t *substream = (snd_rawmidi_substream_t *)data;
+ substream->ops->trigger(substream, 1);
+}
+
+static int snd_rawmidi_runtime_create(snd_rawmidi_substream_t * substream)
+{
+ snd_rawmidi_runtime_t *runtime;
+
+ if ((runtime = kcalloc(1, sizeof(*runtime), GFP_KERNEL)) == NULL)
+ return -ENOMEM;
+ spin_lock_init(&runtime->lock);
+ init_waitqueue_head(&runtime->sleep);
+ if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)
+ tasklet_init(&runtime->tasklet,
+ snd_rawmidi_input_event_tasklet,
+ (unsigned long)substream);
+ else
+ tasklet_init(&runtime->tasklet,
+ snd_rawmidi_output_trigger_tasklet,
+ (unsigned long)substream);
+ runtime->event = NULL;
+ runtime->buffer_size = PAGE_SIZE;
+ runtime->avail_min = 1;
+ if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)
+ runtime->avail = 0;
+ else
+ runtime->avail = runtime->buffer_size;
+ if ((runtime->buffer = kmalloc(runtime->buffer_size, GFP_KERNEL)) == NULL) {
+ kfree(runtime);
+ return -ENOMEM;
+ }
+ runtime->appl_ptr = runtime->hw_ptr = 0;
+ substream->runtime = runtime;
+ return 0;
+}
+
+static int snd_rawmidi_runtime_free(snd_rawmidi_substream_t * substream)
+{
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+
+ kfree(runtime->buffer);
+ kfree(runtime);
+ substream->runtime = NULL;
+ return 0;
+}
+
+static inline void snd_rawmidi_output_trigger(snd_rawmidi_substream_t * substream, int up)
+{
+ if (up) {
+ tasklet_hi_schedule(&substream->runtime->tasklet);
+ } else {
+ tasklet_kill(&substream->runtime->tasklet);
+ substream->ops->trigger(substream, 0);
+ }
+}
+
+static void snd_rawmidi_input_trigger(snd_rawmidi_substream_t * substream, int up)
+{
+ substream->ops->trigger(substream, up);
+ if (!up && substream->runtime->event)
+ tasklet_kill(&substream->runtime->tasklet);
+}
+
+int snd_rawmidi_drop_output(snd_rawmidi_substream_t * substream)
+{
+ unsigned long flags;
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+
+ snd_rawmidi_output_trigger(substream, 0);
+ runtime->drain = 0;
+ spin_lock_irqsave(&runtime->lock, flags);
+ runtime->appl_ptr = runtime->hw_ptr = 0;
+ runtime->avail = runtime->buffer_size;
+ spin_unlock_irqrestore(&runtime->lock, flags);
+ return 0;
+}
+
+int snd_rawmidi_drain_output(snd_rawmidi_substream_t * substream)
+{
+ int err;
+ long timeout;
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+
+ err = 0;
+ runtime->drain = 1;
+ timeout = wait_event_interruptible_timeout(runtime->sleep,
+ (runtime->avail >= runtime->buffer_size),
+ 10*HZ);
+ if (signal_pending(current))
+ err = -ERESTARTSYS;
+ if (runtime->avail < runtime->buffer_size && !timeout) {
+ snd_printk(KERN_WARNING "rawmidi drain error (avail = %li, buffer_size = %li)\n", (long)runtime->avail, (long)runtime->buffer_size);
+ err = -EIO;
+ }
+ runtime->drain = 0;
+ if (err != -ERESTARTSYS) {
+ /* we need wait a while to make sure that Tx FIFOs are empty */
+ if (substream->ops->drain)
+ substream->ops->drain(substream);
+ else
+ msleep(50);
+ snd_rawmidi_drop_output(substream);
+ }
+ return err;
+}
+
+int snd_rawmidi_drain_input(snd_rawmidi_substream_t * substream)
+{
+ unsigned long flags;
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+
+ snd_rawmidi_input_trigger(substream, 0);
+ runtime->drain = 0;
+ spin_lock_irqsave(&runtime->lock, flags);
+ runtime->appl_ptr = runtime->hw_ptr = 0;
+ runtime->avail = 0;
+ spin_unlock_irqrestore(&runtime->lock, flags);
+ return 0;
+}
+
+int snd_rawmidi_kernel_open(int cardnum, int device, int subdevice,
+ int mode, snd_rawmidi_file_t * rfile)
+{
+ snd_rawmidi_t *rmidi;
+ struct list_head *list1, *list2;
+ snd_rawmidi_substream_t *sinput = NULL, *soutput = NULL;
+ snd_rawmidi_runtime_t *input = NULL, *output = NULL;
+ int err;
+
+ if (rfile)
+ rfile->input = rfile->output = NULL;
+ rmidi = snd_rawmidi_devices[(cardnum * SNDRV_RAWMIDI_DEVICES) + device];
+ if (rmidi == NULL) {
+ err = -ENODEV;
+ goto __error1;
+ }
+ if (!try_module_get(rmidi->card->module)) {
+ err = -EFAULT;
+ goto __error1;
+ }
+ if (!(mode & SNDRV_RAWMIDI_LFLG_NOOPENLOCK))
+ down(&rmidi->open_mutex);
+ if (mode & SNDRV_RAWMIDI_LFLG_INPUT) {
+ if (!(rmidi->info_flags & SNDRV_RAWMIDI_INFO_INPUT)) {
+ err = -ENXIO;
+ goto __error;
+ }
+ if (subdevice >= 0 && (unsigned int)subdevice >= rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substream_count) {
+ err = -ENODEV;
+ goto __error;
+ }
+ if (rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substream_opened >=
+ rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substream_count) {
+ err = -EAGAIN;
+ goto __error;
+ }
+ }
+ if (mode & SNDRV_RAWMIDI_LFLG_OUTPUT) {
+ if (!(rmidi->info_flags & SNDRV_RAWMIDI_INFO_OUTPUT)) {
+ err = -ENXIO;
+ goto __error;
+ }
+ if (subdevice >= 0 && (unsigned int)subdevice >= rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substream_count) {
+ err = -ENODEV;
+ goto __error;
+ }
+ if (rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substream_opened >=
+ rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substream_count) {
+ err = -EAGAIN;
+ goto __error;
+ }
+ }
+ list1 = rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams.next;
+ while (1) {
+ if (list1 == &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
+ sinput = NULL;
+ if (mode & SNDRV_RAWMIDI_LFLG_INPUT) {
+ err = -EAGAIN;
+ goto __error;
+ }
+ break;
+ }
+ sinput = list_entry(list1, snd_rawmidi_substream_t, list);
+ if ((mode & SNDRV_RAWMIDI_LFLG_INPUT) && sinput->opened)
+ goto __nexti;
+ if (subdevice < 0 || (subdevice >= 0 && subdevice == sinput->number))
+ break;
+ __nexti:
+ list1 = list1->next;
+ }
+ list2 = rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams.next;
+ while (1) {
+ if (list2 == &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
+ soutput = NULL;
+ if (mode & SNDRV_RAWMIDI_LFLG_OUTPUT) {
+ err = -EAGAIN;
+ goto __error;
+ }
+ break;
+ }
+ soutput = list_entry(list2, snd_rawmidi_substream_t, list);
+ if (mode & SNDRV_RAWMIDI_LFLG_OUTPUT) {
+ if (mode & SNDRV_RAWMIDI_LFLG_APPEND) {
+ if (soutput->opened && !soutput->append)
+ goto __nexto;
+ } else {
+ if (soutput->opened)
+ goto __nexto;
+ }
+ }
+ if (subdevice < 0 || (subdevice >= 0 && subdevice == soutput->number))
+ break;
+ __nexto:
+ list2 = list2->next;
+ }
+ if (mode & SNDRV_RAWMIDI_LFLG_INPUT) {
+ if ((err = snd_rawmidi_runtime_create(sinput)) < 0)
+ goto __error;
+ input = sinput->runtime;
+ if ((err = sinput->ops->open(sinput)) < 0)
+ goto __error;
+ sinput->opened = 1;
+ rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substream_opened++;
+ } else {
+ sinput = NULL;
+ }
+ if (mode & SNDRV_RAWMIDI_LFLG_OUTPUT) {
+ if (soutput->opened)
+ goto __skip_output;
+ if ((err = snd_rawmidi_runtime_create(soutput)) < 0) {
+ if (mode & SNDRV_RAWMIDI_LFLG_INPUT)
+ sinput->ops->close(sinput);
+ goto __error;
+ }
+ output = soutput->runtime;
+ if ((err = soutput->ops->open(soutput)) < 0) {
+ if (mode & SNDRV_RAWMIDI_LFLG_INPUT)
+ sinput->ops->close(sinput);
+ goto __error;
+ }
+ __skip_output:
+ soutput->opened = 1;
+ if (mode & SNDRV_RAWMIDI_LFLG_APPEND)
+ soutput->append = 1;
+ if (soutput->use_count++ == 0)
+ soutput->active_sensing = 1;
+ rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substream_opened++;
+ } else {
+ soutput = NULL;
+ }
+ if (!(mode & SNDRV_RAWMIDI_LFLG_NOOPENLOCK))
+ up(&rmidi->open_mutex);
+ if (rfile) {
+ rfile->rmidi = rmidi;
+ rfile->input = sinput;
+ rfile->output = soutput;
+ }
+ return 0;
+
+ __error:
+ if (input != NULL)
+ snd_rawmidi_runtime_free(sinput);
+ if (output != NULL)
+ snd_rawmidi_runtime_free(soutput);
+ module_put(rmidi->card->module);
+ if (!(mode & SNDRV_RAWMIDI_LFLG_NOOPENLOCK))
+ up(&rmidi->open_mutex);
+ __error1:
+ return err;
+}
+
+static int snd_rawmidi_open(struct inode *inode, struct file *file)
+{
+ int maj = imajor(inode);
+ int cardnum;
+ snd_card_t *card;
+ int device, subdevice;
+ unsigned short fflags;
+ int err;
+ snd_rawmidi_t *rmidi;
+ snd_rawmidi_file_t *rawmidi_file;
+ wait_queue_t wait;
+ struct list_head *list;
+ snd_ctl_file_t *kctl;
+
+ switch (maj) {
+ case CONFIG_SND_MAJOR:
+ cardnum = SNDRV_MINOR_CARD(iminor(inode));
+ cardnum %= SNDRV_CARDS;
+ device = SNDRV_MINOR_DEVICE(iminor(inode)) - SNDRV_MINOR_RAWMIDI;
+ device %= SNDRV_MINOR_RAWMIDIS;
+ break;
+#ifdef CONFIG_SND_OSSEMUL
+ case SOUND_MAJOR:
+ cardnum = SNDRV_MINOR_OSS_CARD(iminor(inode));
+ cardnum %= SNDRV_CARDS;
+ device = SNDRV_MINOR_OSS_DEVICE(iminor(inode)) == SNDRV_MINOR_OSS_MIDI ?
+ midi_map[cardnum] : amidi_map[cardnum];
+ break;
+#endif
+ default:
+ return -ENXIO;
+ }
+
+ rmidi = snd_rawmidi_devices[(cardnum * SNDRV_RAWMIDI_DEVICES) + device];
+ if (rmidi == NULL)
+ return -ENODEV;
+#ifdef CONFIG_SND_OSSEMUL
+ if (maj == SOUND_MAJOR && !rmidi->ossreg)
+ return -ENXIO;
+#endif
+ if ((file->f_flags & O_APPEND) && !(file->f_flags & O_NONBLOCK))
+ return -EINVAL; /* invalid combination */
+ card = rmidi->card;
+ err = snd_card_file_add(card, file);
+ if (err < 0)
+ return -ENODEV;
+ fflags = snd_rawmidi_file_flags(file);
+ if ((file->f_flags & O_APPEND) || maj != CONFIG_SND_MAJOR) /* OSS emul? */
+ fflags |= SNDRV_RAWMIDI_LFLG_APPEND;
+ fflags |= SNDRV_RAWMIDI_LFLG_NOOPENLOCK;
+ rawmidi_file = kmalloc(sizeof(*rawmidi_file), GFP_KERNEL);
+ if (rawmidi_file == NULL) {
+ snd_card_file_remove(card, file);
+ return -ENOMEM;
+ }
+ init_waitqueue_entry(&wait, current);
+ add_wait_queue(&rmidi->open_wait, &wait);
+ down(&rmidi->open_mutex);
+ while (1) {
+ subdevice = -1;
+ down_read(&card->controls_rwsem);
+ list_for_each(list, &card->ctl_files) {
+ kctl = snd_ctl_file(list);
+ if (kctl->pid == current->pid) {
+ subdevice = kctl->prefer_rawmidi_subdevice;
+ break;
+ }
+ }
+ up_read(&card->controls_rwsem);
+ err = snd_rawmidi_kernel_open(cardnum, device, subdevice, fflags, rawmidi_file);
+ if (err >= 0)
+ break;
+ if (err == -EAGAIN) {
+ if (file->f_flags & O_NONBLOCK) {
+ err = -EBUSY;
+ break;
+ }
+ } else
+ break;
+ set_current_state(TASK_INTERRUPTIBLE);
+ up(&rmidi->open_mutex);
+ schedule();
+ down(&rmidi->open_mutex);
+ if (signal_pending(current)) {
+ err = -ERESTARTSYS;
+ break;
+ }
+ }
+#ifdef CONFIG_SND_OSSEMUL
+ if (rawmidi_file->input && rawmidi_file->input->runtime)
+ rawmidi_file->input->runtime->oss = (maj == SOUND_MAJOR);
+ if (rawmidi_file->output && rawmidi_file->output->runtime)
+ rawmidi_file->output->runtime->oss = (maj == SOUND_MAJOR);
+#endif
+ remove_wait_queue(&rmidi->open_wait, &wait);
+ if (err >= 0) {
+ file->private_data = rawmidi_file;
+ } else {
+ snd_card_file_remove(card, file);
+ kfree(rawmidi_file);
+ }
+ up(&rmidi->open_mutex);
+ return err;
+}
+
+int snd_rawmidi_kernel_release(snd_rawmidi_file_t * rfile)
+{
+ snd_rawmidi_t *rmidi;
+ snd_rawmidi_substream_t *substream;
+ snd_rawmidi_runtime_t *runtime;
+
+ snd_assert(rfile != NULL, return -ENXIO);
+ snd_assert(rfile->input != NULL || rfile->output != NULL, return -ENXIO);
+ rmidi = rfile->rmidi;
+ down(&rmidi->open_mutex);
+ if (rfile->input != NULL) {
+ substream = rfile->input;
+ rfile->input = NULL;
+ runtime = substream->runtime;
+ snd_rawmidi_input_trigger(substream, 0);
+ substream->ops->close(substream);
+ if (runtime->private_free != NULL)
+ runtime->private_free(substream);
+ snd_rawmidi_runtime_free(substream);
+ substream->opened = 0;
+ rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substream_opened--;
+ }
+ if (rfile->output != NULL) {
+ substream = rfile->output;
+ rfile->output = NULL;
+ if (--substream->use_count == 0) {
+ runtime = substream->runtime;
+ if (substream->active_sensing) {
+ unsigned char buf = 0xfe;
+ /* sending single active sensing message to shut the device up */
+ snd_rawmidi_kernel_write(substream, &buf, 1);
+ }
+ if (snd_rawmidi_drain_output(substream) == -ERESTARTSYS)
+ snd_rawmidi_output_trigger(substream, 0);
+ substream->ops->close(substream);
+ if (runtime->private_free != NULL)
+ runtime->private_free(substream);
+ snd_rawmidi_runtime_free(substream);
+ substream->opened = 0;
+ substream->append = 0;
+ }
+ rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substream_opened--;
+ }
+ up(&rmidi->open_mutex);
+ module_put(rmidi->card->module);
+ return 0;
+}
+
+static int snd_rawmidi_release(struct inode *inode, struct file *file)
+{
+ snd_rawmidi_file_t *rfile;
+ snd_rawmidi_t *rmidi;
+ int err;
+
+ rfile = file->private_data;
+ err = snd_rawmidi_kernel_release(rfile);
+ rmidi = rfile->rmidi;
+ wake_up(&rmidi->open_wait);
+ kfree(rfile);
+ snd_card_file_remove(rmidi->card, file);
+ return err;
+}
+
+int snd_rawmidi_info(snd_rawmidi_substream_t *substream, snd_rawmidi_info_t *info)
+{
+ snd_rawmidi_t *rmidi;
+
+ if (substream == NULL)
+ return -ENODEV;
+ rmidi = substream->rmidi;
+ memset(info, 0, sizeof(*info));
+ info->card = rmidi->card->number;
+ info->device = rmidi->device;
+ info->subdevice = substream->number;
+ info->stream = substream->stream;
+ info->flags = rmidi->info_flags;
+ strcpy(info->id, rmidi->id);
+ strcpy(info->name, rmidi->name);
+ strcpy(info->subname, substream->name);
+ info->subdevices_count = substream->pstr->substream_count;
+ info->subdevices_avail = (substream->pstr->substream_count -
+ substream->pstr->substream_opened);
+ return 0;
+}
+
+static int snd_rawmidi_info_user(snd_rawmidi_substream_t *substream, snd_rawmidi_info_t __user * _info)
+{
+ snd_rawmidi_info_t info;
+ int err;
+ if ((err = snd_rawmidi_info(substream, &info)) < 0)
+ return err;
+ if (copy_to_user(_info, &info, sizeof(snd_rawmidi_info_t)))
+ return -EFAULT;
+ return 0;
+}
+
+int snd_rawmidi_info_select(snd_card_t *card, snd_rawmidi_info_t *info)
+{
+ snd_rawmidi_t *rmidi;
+ snd_rawmidi_str_t *pstr;
+ snd_rawmidi_substream_t *substream;
+ struct list_head *list;
+ if (info->device >= SNDRV_RAWMIDI_DEVICES)
+ return -ENXIO;
+ rmidi = snd_rawmidi_devices[card->number * SNDRV_RAWMIDI_DEVICES + info->device];
+ if (info->stream < 0 || info->stream > 1)
+ return -EINVAL;
+ pstr = &rmidi->streams[info->stream];
+ if (pstr->substream_count == 0)
+ return -ENOENT;
+ if (info->subdevice >= pstr->substream_count)
+ return -ENXIO;
+ list_for_each(list, &pstr->substreams) {
+ substream = list_entry(list, snd_rawmidi_substream_t, list);
+ if ((unsigned int)substream->number == info->subdevice)
+ return snd_rawmidi_info(substream, info);
+ }
+ return -ENXIO;
+}
+
+static int snd_rawmidi_info_select_user(snd_card_t *card,
+ snd_rawmidi_info_t __user *_info)
+{
+ int err;
+ snd_rawmidi_info_t info;
+ if (get_user(info.device, &_info->device))
+ return -EFAULT;
+ if (get_user(info.stream, &_info->stream))
+ return -EFAULT;
+ if (get_user(info.subdevice, &_info->subdevice))
+ return -EFAULT;
+ if ((err = snd_rawmidi_info_select(card, &info)) < 0)
+ return err;
+ if (copy_to_user(_info, &info, sizeof(snd_rawmidi_info_t)))
+ return -EFAULT;
+ return 0;
+}
+
+int snd_rawmidi_output_params(snd_rawmidi_substream_t * substream,
+ snd_rawmidi_params_t * params)
+{
+ char *newbuf;
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+
+ if (substream->append && substream->use_count > 1)
+ return -EBUSY;
+ snd_rawmidi_drain_output(substream);
+ if (params->buffer_size < 32 || params->buffer_size > 1024L * 1024L) {
+ return -EINVAL;
+ }
+ if (params->avail_min < 1 || params->avail_min > params->buffer_size) {
+ return -EINVAL;
+ }
+ if (params->buffer_size != runtime->buffer_size) {
+ if ((newbuf = (char *) kmalloc(params->buffer_size, GFP_KERNEL)) == NULL)
+ return -ENOMEM;
+ kfree(runtime->buffer);
+ runtime->buffer = newbuf;
+ runtime->buffer_size = params->buffer_size;
+ }
+ runtime->avail_min = params->avail_min;
+ substream->active_sensing = !params->no_active_sensing;
+ return 0;
+}
+
+int snd_rawmidi_input_params(snd_rawmidi_substream_t * substream,
+ snd_rawmidi_params_t * params)
+{
+ char *newbuf;
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+
+ snd_rawmidi_drain_input(substream);
+ if (params->buffer_size < 32 || params->buffer_size > 1024L * 1024L) {
+ return -EINVAL;
+ }
+ if (params->avail_min < 1 || params->avail_min > params->buffer_size) {
+ return -EINVAL;
+ }
+ if (params->buffer_size != runtime->buffer_size) {
+ if ((newbuf = (char *) kmalloc(params->buffer_size, GFP_KERNEL)) == NULL)
+ return -ENOMEM;
+ kfree(runtime->buffer);
+ runtime->buffer = newbuf;
+ runtime->buffer_size = params->buffer_size;
+ }
+ runtime->avail_min = params->avail_min;
+ return 0;
+}
+
+static int snd_rawmidi_output_status(snd_rawmidi_substream_t * substream,
+ snd_rawmidi_status_t * status)
+{
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+
+ memset(status, 0, sizeof(*status));
+ status->stream = SNDRV_RAWMIDI_STREAM_OUTPUT;
+ spin_lock_irq(&runtime->lock);
+ status->avail = runtime->avail;
+ spin_unlock_irq(&runtime->lock);
+ return 0;
+}
+
+static int snd_rawmidi_input_status(snd_rawmidi_substream_t * substream,
+ snd_rawmidi_status_t * status)
+{
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+
+ memset(status, 0, sizeof(*status));
+ status->stream = SNDRV_RAWMIDI_STREAM_INPUT;
+ spin_lock_irq(&runtime->lock);
+ status->avail = runtime->avail;
+ status->xruns = runtime->xruns;
+ runtime->xruns = 0;
+ spin_unlock_irq(&runtime->lock);
+ return 0;
+}
+
+static long snd_rawmidi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ snd_rawmidi_file_t *rfile;
+ void __user *argp = (void __user *)arg;
+
+ rfile = file->private_data;
+ if (((cmd >> 8) & 0xff) != 'W')
+ return -ENOTTY;
+ switch (cmd) {
+ case SNDRV_RAWMIDI_IOCTL_PVERSION:
+ return put_user(SNDRV_RAWMIDI_VERSION, (int __user *)argp) ? -EFAULT : 0;
+ case SNDRV_RAWMIDI_IOCTL_INFO:
+ {
+ snd_rawmidi_stream_t stream;
+ snd_rawmidi_info_t __user *info = argp;
+ if (get_user(stream, &info->stream))
+ return -EFAULT;
+ switch (stream) {
+ case SNDRV_RAWMIDI_STREAM_INPUT:
+ return snd_rawmidi_info_user(rfile->input, info);
+ case SNDRV_RAWMIDI_STREAM_OUTPUT:
+ return snd_rawmidi_info_user(rfile->output, info);
+ default:
+ return -EINVAL;
+ }
+ }
+ case SNDRV_RAWMIDI_IOCTL_PARAMS:
+ {
+ snd_rawmidi_params_t params;
+ if (copy_from_user(¶ms, argp, sizeof(snd_rawmidi_params_t)))
+ return -EFAULT;
+ switch (params.stream) {
+ case SNDRV_RAWMIDI_STREAM_OUTPUT:
+ if (rfile->output == NULL)
+ return -EINVAL;
+ return snd_rawmidi_output_params(rfile->output, ¶ms);
+ case SNDRV_RAWMIDI_STREAM_INPUT:
+ if (rfile->input == NULL)
+ return -EINVAL;
+ return snd_rawmidi_input_params(rfile->input, ¶ms);
+ default:
+ return -EINVAL;
+ }
+ }
+ case SNDRV_RAWMIDI_IOCTL_STATUS:
+ {
+ int err = 0;
+ snd_rawmidi_status_t status;
+ if (copy_from_user(&status, argp, sizeof(snd_rawmidi_status_t)))
+ return -EFAULT;
+ switch (status.stream) {
+ case SNDRV_RAWMIDI_STREAM_OUTPUT:
+ if (rfile->output == NULL)
+ return -EINVAL;
+ err = snd_rawmidi_output_status(rfile->output, &status);
+ break;
+ case SNDRV_RAWMIDI_STREAM_INPUT:
+ if (rfile->input == NULL)
+ return -EINVAL;
+ err = snd_rawmidi_input_status(rfile->input, &status);
+ break;
+ default:
+ return -EINVAL;
+ }
+ if (err < 0)
+ return err;
+ if (copy_to_user(argp, &status, sizeof(snd_rawmidi_status_t)))
+ return -EFAULT;
+ return 0;
+ }
+ case SNDRV_RAWMIDI_IOCTL_DROP:
+ {
+ int val;
+ if (get_user(val, (int __user *) argp))
+ return -EFAULT;
+ switch (val) {
+ case SNDRV_RAWMIDI_STREAM_OUTPUT:
+ if (rfile->output == NULL)
+ return -EINVAL;
+ return snd_rawmidi_drop_output(rfile->output);
+ default:
+ return -EINVAL;
+ }
+ }
+ case SNDRV_RAWMIDI_IOCTL_DRAIN:
+ {
+ int val;
+ if (get_user(val, (int __user *) argp))
+ return -EFAULT;
+ switch (val) {
+ case SNDRV_RAWMIDI_STREAM_OUTPUT:
+ if (rfile->output == NULL)
+ return -EINVAL;
+ return snd_rawmidi_drain_output(rfile->output);
+ case SNDRV_RAWMIDI_STREAM_INPUT:
+ if (rfile->input == NULL)
+ return -EINVAL;
+ return snd_rawmidi_drain_input(rfile->input);
+ default:
+ return -EINVAL;
+ }
+ }
+#ifdef CONFIG_SND_DEBUG
+ default:
+ snd_printk(KERN_WARNING "rawmidi: unknown command = 0x%x\n", cmd);
+#endif
+ }
+ return -ENOTTY;
+}
+
+static int snd_rawmidi_control_ioctl(snd_card_t * card,
+ snd_ctl_file_t * control,
+ unsigned int cmd,
+ unsigned long arg)
+{
+ void __user *argp = (void __user *)arg;
+ unsigned int tmp;
+
+ tmp = card->number * SNDRV_RAWMIDI_DEVICES;
+ switch (cmd) {
+ case SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE:
+ {
+ int device;
+
+ if (get_user(device, (int __user *)argp))
+ return -EFAULT;
+ device = device < 0 ? 0 : device + 1;
+ while (device < SNDRV_RAWMIDI_DEVICES) {
+ if (snd_rawmidi_devices[tmp + device])
+ break;
+ device++;
+ }
+ if (device == SNDRV_RAWMIDI_DEVICES)
+ device = -1;
+ if (put_user(device, (int __user *)argp))
+ return -EFAULT;
+ return 0;
+ }
+ case SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE:
+ {
+ int val;
+
+ if (get_user(val, (int __user *)argp))
+ return -EFAULT;
+ control->prefer_rawmidi_subdevice = val;
+ return 0;
+ }
+ case SNDRV_CTL_IOCTL_RAWMIDI_INFO:
+ return snd_rawmidi_info_select_user(card, argp);
+ }
+ return -ENOIOCTLCMD;
+}
+
+/**
+ * snd_rawmidi_receive - receive the input data from the device
+ * @substream: the rawmidi substream
+ * @buffer: the buffer pointer
+ * @count: the data size to read
+ *
+ * Reads the data from the internal buffer.
+ *
+ * Returns the size of read data, or a negative error code on failure.
+ */
+int snd_rawmidi_receive(snd_rawmidi_substream_t * substream, const unsigned char *buffer, int count)
+{
+ unsigned long flags;
+ int result = 0, count1;
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+
+ if (runtime->buffer == NULL) {
+ snd_printd("snd_rawmidi_receive: input is not active!!!\n");
+ return -EINVAL;
+ }
+ spin_lock_irqsave(&runtime->lock, flags);
+ if (count == 1) { /* special case, faster code */
+ substream->bytes++;
+ if (runtime->avail < runtime->buffer_size) {
+ runtime->buffer[runtime->hw_ptr++] = buffer[0];
+ runtime->hw_ptr %= runtime->buffer_size;
+ runtime->avail++;
+ result++;
+ } else {
+ runtime->xruns++;
+ }
+ } else {
+ substream->bytes += count;
+ count1 = runtime->buffer_size - runtime->hw_ptr;
+ if (count1 > count)
+ count1 = count;
+ if (count1 > (int)(runtime->buffer_size - runtime->avail))
+ count1 = runtime->buffer_size - runtime->avail;
+ memcpy(runtime->buffer + runtime->hw_ptr, buffer, count1);
+ runtime->hw_ptr += count1;
+ runtime->hw_ptr %= runtime->buffer_size;
+ runtime->avail += count1;
+ count -= count1;
+ result += count1;
+ if (count > 0) {
+ buffer += count1;
+ count1 = count;
+ if (count1 > (int)(runtime->buffer_size - runtime->avail)) {
+ count1 = runtime->buffer_size - runtime->avail;
+ runtime->xruns += count - count1;
+ }
+ if (count1 > 0) {
+ memcpy(runtime->buffer, buffer, count1);
+ runtime->hw_ptr = count1;
+ runtime->avail += count1;
+ result += count1;
+ }
+ }
+ }
+ if (result > 0) {
+ if (runtime->event)
+ tasklet_hi_schedule(&runtime->tasklet);
+ else if (snd_rawmidi_ready(substream))
+ wake_up(&runtime->sleep);
+ }
+ spin_unlock_irqrestore(&runtime->lock, flags);
+ return result;
+}
+
+static long snd_rawmidi_kernel_read1(snd_rawmidi_substream_t *substream,
+ unsigned char *buf, long count, int kernel)
+{
+ unsigned long flags;
+ long result = 0, count1;
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+
+ while (count > 0 && runtime->avail) {
+ count1 = runtime->buffer_size - runtime->appl_ptr;
+ if (count1 > count)
+ count1 = count;
+ spin_lock_irqsave(&runtime->lock, flags);
+ if (count1 > (int)runtime->avail)
+ count1 = runtime->avail;
+ if (kernel) {
+ memcpy(buf + result, runtime->buffer + runtime->appl_ptr, count1);
+ } else {
+ spin_unlock_irqrestore(&runtime->lock, flags);
+ if (copy_to_user((char __user *)buf + result,
+ runtime->buffer + runtime->appl_ptr, count1)) {
+ return result > 0 ? result : -EFAULT;
+ }
+ spin_lock_irqsave(&runtime->lock, flags);
+ }
+ runtime->appl_ptr += count1;
+ runtime->appl_ptr %= runtime->buffer_size;
+ runtime->avail -= count1;
+ spin_unlock_irqrestore(&runtime->lock, flags);
+ result += count1;
+ count -= count1;
+ }
+ return result;
+}
+
+long snd_rawmidi_kernel_read(snd_rawmidi_substream_t *substream, unsigned char *buf, long count)
+{
+ snd_rawmidi_input_trigger(substream, 1);
+ return snd_rawmidi_kernel_read1(substream, buf, count, 1);
+}
+
+static ssize_t snd_rawmidi_read(struct file *file, char __user *buf, size_t count, loff_t *offset)
+{
+ long result;
+ int count1;
+ snd_rawmidi_file_t *rfile;
+ snd_rawmidi_substream_t *substream;
+ snd_rawmidi_runtime_t *runtime;
+
+ rfile = file->private_data;
+ substream = rfile->input;
+ if (substream == NULL)
+ return -EIO;
+ runtime = substream->runtime;
+ snd_rawmidi_input_trigger(substream, 1);
+ result = 0;
+ while (count > 0) {
+ spin_lock_irq(&runtime->lock);
+ while (!snd_rawmidi_ready(substream)) {
+ wait_queue_t wait;
+ if ((file->f_flags & O_NONBLOCK) != 0 || result > 0) {
+ spin_unlock_irq(&runtime->lock);
+ return result > 0 ? result : -EAGAIN;
+ }
+ init_waitqueue_entry(&wait, current);
+ add_wait_queue(&runtime->sleep, &wait);
+ set_current_state(TASK_INTERRUPTIBLE);
+ spin_unlock_irq(&runtime->lock);
+ schedule();
+ remove_wait_queue(&runtime->sleep, &wait);
+ if (signal_pending(current))
+ return result > 0 ? result : -ERESTARTSYS;
+ if (!runtime->avail)
+ return result > 0 ? result : -EIO;
+ spin_lock_irq(&runtime->lock);
+ }
+ spin_unlock_irq(&runtime->lock);
+ count1 = snd_rawmidi_kernel_read1(substream, (unsigned char *)buf, count, 0);
+ if (count1 < 0)
+ return result > 0 ? result : count1;
+ result += count1;
+ buf += count1;
+ count -= count1;
+ }
+ return result;
+}
+
+/**
+ * snd_rawmidi_transmit_empty - check whether the output buffer is empty
+ * @substream: the rawmidi substream
+ *
+ * Returns 1 if the internal output buffer is empty, 0 if not.
+ */
+int snd_rawmidi_transmit_empty(snd_rawmidi_substream_t * substream)
+{
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+ int result;
+ unsigned long flags;
+
+ if (runtime->buffer == NULL) {
+ snd_printd("snd_rawmidi_transmit_empty: output is not active!!!\n");
+ return 1;
+ }
+ spin_lock_irqsave(&runtime->lock, flags);
+ result = runtime->avail >= runtime->buffer_size;
+ spin_unlock_irqrestore(&runtime->lock, flags);
+ return result;
+}
+
+/**
+ * snd_rawmidi_transmit_peek - copy data from the internal buffer
+ * @substream: the rawmidi substream
+ * @buffer: the buffer pointer
+ * @count: data size to transfer
+ *
+ * Copies data from the internal output buffer to the given buffer.
+ *
+ * Call this in the interrupt handler when the midi output is ready,
+ * and call snd_rawmidi_transmit_ack() after the transmission is
+ * finished.
+ *
+ * Returns the size of copied data, or a negative error code on failure.
+ */
+int snd_rawmidi_transmit_peek(snd_rawmidi_substream_t * substream, unsigned char *buffer, int count)
+{
+ unsigned long flags;
+ int result, count1;
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+
+ if (runtime->buffer == NULL) {
+ snd_printd("snd_rawmidi_transmit_peek: output is not active!!!\n");
+ return -EINVAL;
+ }
+ result = 0;
+ spin_lock_irqsave(&runtime->lock, flags);
+ if (runtime->avail >= runtime->buffer_size) {
+ /* warning: lowlevel layer MUST trigger down the hardware */
+ goto __skip;
+ }
+ if (count == 1) { /* special case, faster code */
+ *buffer = runtime->buffer[runtime->hw_ptr];
+ result++;
+ } else {
+ count1 = runtime->buffer_size - runtime->hw_ptr;
+ if (count1 > count)
+ count1 = count;
+ if (count1 > (int)(runtime->buffer_size - runtime->avail))
+ count1 = runtime->buffer_size - runtime->avail;
+ memcpy(buffer, runtime->buffer + runtime->hw_ptr, count1);
+ count -= count1;
+ result += count1;
+ if (count > 0) {
+ if (count > (int)(runtime->buffer_size - runtime->avail - count1))
+ count = runtime->buffer_size - runtime->avail - count1;
+ memcpy(buffer + count1, runtime->buffer, count);
+ result += count;
+ }
+ }
+ __skip:
+ spin_unlock_irqrestore(&runtime->lock, flags);
+ return result;
+}
+
+/**
+ * snd_rawmidi_transmit_ack - acknowledge the transmission
+ * @substream: the rawmidi substream
+ * @count: the tranferred count
+ *
+ * Advances the hardware pointer for the internal output buffer with
+ * the given size and updates the condition.
+ * Call after the transmission is finished.
+ *
+ * Returns the advanced size if successful, or a negative error code on failure.
+ */
+int snd_rawmidi_transmit_ack(snd_rawmidi_substream_t * substream, int count)
+{
+ unsigned long flags;
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+
+ if (runtime->buffer == NULL) {
+ snd_printd("snd_rawmidi_transmit_ack: output is not active!!!\n");
+ return -EINVAL;
+ }
+ spin_lock_irqsave(&runtime->lock, flags);
+ snd_assert(runtime->avail + count <= runtime->buffer_size, );
+ runtime->hw_ptr += count;
+ runtime->hw_ptr %= runtime->buffer_size;
+ runtime->avail += count;
+ substream->bytes += count;
+ if (count > 0) {
+ if (runtime->drain || snd_rawmidi_ready(substream))
+ wake_up(&runtime->sleep);
+ }
+ spin_unlock_irqrestore(&runtime->lock, flags);
+ return count;
+}
+
+/**
+ * snd_rawmidi_transmit - copy from the buffer to the device
+ * @substream: the rawmidi substream
+ * @buf: the buffer pointer
+ * @count: the data size to transfer
+ *
+ * Copies data from the buffer to the device and advances the pointer.
+ *
+ * Returns the copied size if successful, or a negative error code on failure.
+ */
+int snd_rawmidi_transmit(snd_rawmidi_substream_t * substream, unsigned char *buffer, int count)
+{
+ count = snd_rawmidi_transmit_peek(substream, buffer, count);
+ if (count < 0)
+ return count;
+ return snd_rawmidi_transmit_ack(substream, count);
+}
+
+static long snd_rawmidi_kernel_write1(snd_rawmidi_substream_t * substream, const unsigned char *buf, long count, int kernel)
+{
+ unsigned long flags;
+ long count1, result;
+ snd_rawmidi_runtime_t *runtime = substream->runtime;
+
+ snd_assert(buf != NULL, return -EINVAL);
+ snd_assert(runtime->buffer != NULL, return -EINVAL);
+
+ result = 0;
+ spin_lock_irqsave(&runtime->lock, flags);
+ if (substream->append) {
+ if ((long)runtime->avail < count) {
+ spin_unlock_irqrestore(&runtime->lock, flags);
+ return -EAGAIN;
+ }
+ }
+ while (count > 0 && runtime->avail > 0) {
+ count1 = runtime->buffer_size - runtime->appl_ptr;
+ if (count1 > count)
+ count1 = count;
+ if (count1 > (long)runtime->avail)
+ count1 = runtime->avail;
+ if (kernel) {
+ memcpy(runtime->buffer + runtime->appl_ptr, buf, count1);
+ } else {
+ spin_unlock_irqrestore(&runtime->lock, flags);
+ if (copy_from_user(runtime->buffer + runtime->appl_ptr,
+ (char __user *)buf, count1)) {
+ spin_lock_irqsave(&runtime->lock, flags);
+ result = result > 0 ? result : -EFAULT;
+ goto __end;
+ }
+ spin_lock_irqsave(&runtime->lock, flags);
+ }
+ runtime->appl_ptr += count1;
+ runtime->appl_ptr %= runtime->buffer_size;
+ runtime->avail -= count1;
+ result += count1;
+ buf += count1;
+ count -= count1;
+ }
+ __end:
+ count1 = runtime->avail < runtime->buffer_size;
+ spin_unlock_irqrestore(&runtime->lock, flags);
+ if (count1)
+ snd_rawmidi_output_trigger(substream, 1);
+ return result;
+}
+
+long snd_rawmidi_kernel_write(snd_rawmidi_substream_t * substream, const unsigned char *buf, long count)
+{
+ return snd_rawmidi_kernel_write1(substream, buf, count, 1);
+}
+
+static ssize_t snd_rawmidi_write(struct file *file, const char __user *buf, size_t count, loff_t *offset)
+{
+ long result, timeout;
+ int count1;
+ snd_rawmidi_file_t *rfile;
+ snd_rawmidi_runtime_t *runtime;
+ snd_rawmidi_substream_t *substream;
+
+ rfile = file->private_data;
+ substream = rfile->output;
+ runtime = substream->runtime;
+ /* we cannot put an atomic message to our buffer */
+ if (substream->append && count > runtime->buffer_size)
+ return -EIO;
+ result = 0;
+ while (count > 0) {
+ spin_lock_irq(&runtime->lock);
+ while (!snd_rawmidi_ready_append(substream, count)) {
+ wait_queue_t wait;
+ if (file->f_flags & O_NONBLOCK) {
+ spin_unlock_irq(&runtime->lock);
+ return result > 0 ? result : -EAGAIN;
+ }
+ init_waitqueue_entry(&wait, current);
+ add_wait_queue(&runtime->sleep, &wait);
+ set_current_state(TASK_INTERRUPTIBLE);
+ spin_unlock_irq(&runtime->lock);
+ timeout = schedule_timeout(30 * HZ);
+ remove_wait_queue(&runtime->sleep, &wait);
+ if (signal_pending(current))
+ return result > 0 ? result : -ERESTARTSYS;
+ if (!runtime->avail && !timeout)
+ return result > 0 ? result : -EIO;
+ spin_lock_irq(&runtime->lock);
+ }
+ spin_unlock_irq(&runtime->lock);
+ count1 = snd_rawmidi_kernel_write1(substream, (unsigned char *)buf, count, 0);
+ if (count1 < 0)
+ return result > 0 ? result : count1;
+ result += count1;
+ buf += count1;
+ if ((size_t)count1 < count && (file->f_flags & O_NONBLOCK))
+ break;
+ count -= count1;
+ }
+ if (file->f_flags & O_SYNC) {
+ spin_lock_irq(&runtime->lock);
+ while (runtime->avail != runtime->buffer_size) {
+ wait_queue_t wait;
+ unsigned int last_avail = runtime->avail;
+ init_waitqueue_entry(&wait, current);
+ add_wait_queue(&runtime->sleep, &wait);
+ set_current_state(TASK_INTERRUPTIBLE);
+ spin_unlock_irq(&runtime->lock);
+ timeout = schedule_timeout(30 * HZ);
+ remove_wait_queue(&runtime->sleep, &wait);
+ if (signal_pending(current))
+ return result > 0 ? result : -ERESTARTSYS;
+ if (runtime->avail == last_avail && !timeout)
+ return result > 0 ? result : -EIO;
+ spin_lock_irq(&runtime->lock);
+ }
+ spin_unlock_irq(&runtime->lock);
+ }
+ return result;
+}
+
+static unsigned int snd_rawmidi_poll(struct file *file, poll_table * wait)
+{
+ snd_rawmidi_file_t *rfile;
+ snd_rawmidi_runtime_t *runtime;
+ unsigned int mask;
+
+ rfile = file->private_data;
+ if (rfile->input != NULL) {
+ runtime = rfile->input->runtime;
+ snd_rawmidi_input_trigger(rfile->input, 1);
+ poll_wait(file, &runtime->sleep, wait);
+ }
+ if (rfile->output != NULL) {
+ runtime = rfile->output->runtime;
+ poll_wait(file, &runtime->sleep, wait);
+ }
+ mask = 0;
+ if (rfile->input != NULL) {
+ if (snd_rawmidi_ready(rfile->input))
+ mask |= POLLIN | POLLRDNORM;
+ }
+ if (rfile->output != NULL) {
+ if (snd_rawmidi_ready(rfile->output))
+ mask |= POLLOUT | POLLWRNORM;
+ }
+ return mask;
+}
+
+/*
+ */
+#ifdef CONFIG_COMPAT
+#include "rawmidi_compat.c"
+#else
+#define snd_rawmidi_ioctl_compat NULL
+#endif
+
+/*
+
+ */
+
+static void snd_rawmidi_proc_info_read(snd_info_entry_t *entry,
+ snd_info_buffer_t * buffer)
+{
+ snd_rawmidi_t *rmidi;
+ snd_rawmidi_substream_t *substream;
+ snd_rawmidi_runtime_t *runtime;
+ struct list_head *list;
+
+ rmidi = entry->private_data;
+ snd_iprintf(buffer, "%s\n\n", rmidi->name);
+ down(&rmidi->open_mutex);
+ if (rmidi->info_flags & SNDRV_RAWMIDI_INFO_OUTPUT) {
+ list_for_each(list, &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
+ substream = list_entry(list, snd_rawmidi_substream_t, list);
+ snd_iprintf(buffer,
+ "Output %d\n"
+ " Tx bytes : %lu\n",
+ substream->number,
+ (unsigned long) substream->bytes);
+ if (substream->opened) {
+ runtime = substream->runtime;
+ snd_iprintf(buffer,
+ " Mode : %s\n"
+ " Buffer size : %lu\n"
+ " Avail : %lu\n",
+ runtime->oss ? "OSS compatible" : "native",
+ (unsigned long) runtime->buffer_size,
+ (unsigned long) runtime->avail);
+ }
+ }
+ }
+ if (rmidi->info_flags & SNDRV_RAWMIDI_INFO_INPUT) {
+ list_for_each(list, &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
+ substream = list_entry(list, snd_rawmidi_substream_t, list);
+ snd_iprintf(buffer,
+ "Input %d\n"
+ " Rx bytes : %lu\n",
+ substream->number,
+ (unsigned long) substream->bytes);
+ if (substream->opened) {
+ runtime = substream->runtime;
+ snd_iprintf(buffer,
+ " Buffer size : %lu\n"
+ " Avail : %lu\n"
+ " Overruns : %lu\n",
+ (unsigned long) runtime->buffer_size,
+ (unsigned long) runtime->avail,
+ (unsigned long) runtime->xruns);
+ }
+ }
+ }
+ up(&rmidi->open_mutex);
+}
+
+/*
+ * Register functions
+ */
+
+static struct file_operations snd_rawmidi_f_ops =
+{
+ .owner = THIS_MODULE,
+ .read = snd_rawmidi_read,
+ .write = snd_rawmidi_write,
+ .open = snd_rawmidi_open,
+ .release = snd_rawmidi_release,
+ .poll = snd_rawmidi_poll,
+ .unlocked_ioctl = snd_rawmidi_ioctl,
+ .compat_ioctl = snd_rawmidi_ioctl_compat,
+};
+
+static snd_minor_t snd_rawmidi_reg =
+{
+ .comment = "raw midi",
+ .f_ops = &snd_rawmidi_f_ops,
+};
+
+static int snd_rawmidi_alloc_substreams(snd_rawmidi_t *rmidi,
+ snd_rawmidi_str_t *stream,
+ int direction,
+ int count)
+{
+ snd_rawmidi_substream_t *substream;
+ int idx;
+
+ INIT_LIST_HEAD(&stream->substreams);
+ for (idx = 0; idx < count; idx++) {
+ substream = kcalloc(1, sizeof(*substream), GFP_KERNEL);
+ if (substream == NULL)
+ return -ENOMEM;
+ substream->stream = direction;
+ substream->number = idx;
+ substream->rmidi = rmidi;
+ substream->pstr = stream;
+ list_add_tail(&substream->list, &stream->substreams);
+ stream->substream_count++;
+ }
+ return 0;
+}
+
+/**
+ * snd_rawmidi_new - create a rawmidi instance
+ * @card: the card instance
+ * @id: the id string
+ * @device: the device index
+ * @output_count: the number of output streams
+ * @input_count: the number of input streams
+ * @rrawmidi: the pointer to store the new rawmidi instance
+ *
+ * Creates a new rawmidi instance.
+ * Use snd_rawmidi_set_ops() to set the operators to the new instance.
+ *
+ * Returns zero if successful, or a negative error code on failure.
+ */
+int snd_rawmidi_new(snd_card_t * card, char *id, int device,
+ int output_count, int input_count,
+ snd_rawmidi_t ** rrawmidi)
+{
+ snd_rawmidi_t *rmidi;
+ int err;
+ static snd_device_ops_t ops = {
+ .dev_free = snd_rawmidi_dev_free,
+ .dev_register = snd_rawmidi_dev_register,
+ .dev_disconnect = snd_rawmidi_dev_disconnect,
+ .dev_unregister = snd_rawmidi_dev_unregister
+ };
+
+ snd_assert(rrawmidi != NULL, return -EINVAL);
+ *rrawmidi = NULL;
+ snd_assert(card != NULL, return -ENXIO);
+ rmidi = kcalloc(1, sizeof(*rmidi), GFP_KERNEL);
+ if (rmidi == NULL)
+ return -ENOMEM;
+ rmidi->card = card;
+ rmidi->device = device;
+ init_MUTEX(&rmidi->open_mutex);
+ init_waitqueue_head(&rmidi->open_wait);
+ if (id != NULL)
+ strlcpy(rmidi->id, id, sizeof(rmidi->id));
+ if ((err = snd_rawmidi_alloc_substreams(rmidi, &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT], SNDRV_RAWMIDI_STREAM_INPUT, input_count)) < 0) {
+ snd_rawmidi_free(rmidi);
+ return err;
+ }
+ if ((err = snd_rawmidi_alloc_substreams(rmidi, &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT], SNDRV_RAWMIDI_STREAM_OUTPUT, output_count)) < 0) {
+ snd_rawmidi_free(rmidi);
+ return err;
+ }
+ if ((err = snd_device_new(card, SNDRV_DEV_RAWMIDI, rmidi, &ops)) < 0) {
+ snd_rawmidi_free(rmidi);
+ return err;
+ }
+ *rrawmidi = rmidi;
+ return 0;
+}
+
+static void snd_rawmidi_free_substreams(snd_rawmidi_str_t *stream)
+{
+ snd_rawmidi_substream_t *substream;
+
+ while (!list_empty(&stream->substreams)) {
+ substream = list_entry(stream->substreams.next, snd_rawmidi_substream_t, list);
+ list_del(&substream->list);
+ kfree(substream);
+ }
+}
+
+static int snd_rawmidi_free(snd_rawmidi_t *rmidi)
+{
+ snd_assert(rmidi != NULL, return -ENXIO);
+ snd_rawmidi_free_substreams(&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]);
+ snd_rawmidi_free_substreams(&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]);
+ if (rmidi->private_free)
+ rmidi->private_free(rmidi);
+ kfree(rmidi);
+ return 0;
+}
+
+static int snd_rawmidi_dev_free(snd_device_t *device)
+{
+ snd_rawmidi_t *rmidi = device->device_data;
+ return snd_rawmidi_free(rmidi);
+}
+
+#if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE))
+static void snd_rawmidi_dev_seq_free(snd_seq_device_t *device)
+{
+ snd_rawmidi_t *rmidi = device->private_data;
+ rmidi->seq_dev = NULL;
+}
+#endif
+
+static int snd_rawmidi_dev_register(snd_device_t *device)
+{
+ int idx, err;
+ snd_info_entry_t *entry;
+ char name[16];
+ snd_rawmidi_t *rmidi = device->device_data;
+
+ if (rmidi->device >= SNDRV_RAWMIDI_DEVICES)
+ return -ENOMEM;
+ down(®ister_mutex);
+ idx = (rmidi->card->number * SNDRV_RAWMIDI_DEVICES) + rmidi->device;
+ if (snd_rawmidi_devices[idx] != NULL) {
+ up(®ister_mutex);
+ return -EBUSY;
+ }
+ snd_rawmidi_devices[idx] = rmidi;
+ sprintf(name, "midiC%iD%i", rmidi->card->number, rmidi->device);
+ if ((err = snd_register_device(SNDRV_DEVICE_TYPE_RAWMIDI,
+ rmidi->card, rmidi->device,
+ &snd_rawmidi_reg, name)) < 0) {
+ snd_printk(KERN_ERR "unable to register rawmidi device %i:%i\n", rmidi->card->number, rmidi->device);
+ snd_rawmidi_devices[idx] = NULL;
+ up(®ister_mutex);
+ return err;
+ }
+ if (rmidi->ops && rmidi->ops->dev_register &&
+ (err = rmidi->ops->dev_register(rmidi)) < 0) {
+ snd_unregister_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device);
+ snd_rawmidi_devices[idx] = NULL;
+ up(®ister_mutex);
+ return err;
+ }
+#ifdef CONFIG_SND_OSSEMUL
+ rmidi->ossreg = 0;
+ if ((int)rmidi->device == midi_map[rmidi->card->number]) {
+ if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI,
+ rmidi->card, 0, &snd_rawmidi_reg, name) < 0) {
+ snd_printk(KERN_ERR "unable to register OSS rawmidi device %i:%i\n", rmidi->card->number, 0);
+ } else {
+ rmidi->ossreg++;
+#ifdef SNDRV_OSS_INFO_DEV_MIDI
+ snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIDI, rmidi->card->number, rmidi->name);
+#endif
+ }
+ }
+ if ((int)rmidi->device == amidi_map[rmidi->card->number]) {
+ if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI,
+ rmidi->card, 1, &snd_rawmidi_reg, name) < 0) {
+ snd_printk(KERN_ERR "unable to register OSS rawmidi device %i:%i\n", rmidi->card->number, 1);
+ } else {
+ rmidi->ossreg++;
+ }
+ }
+#endif /* CONFIG_SND_OSSEMUL */
+ up(®ister_mutex);
+ sprintf(name, "midi%d", rmidi->device);
+ entry = snd_info_create_card_entry(rmidi->card, name, rmidi->card->proc_root);
+ if (entry) {
+ entry->private_data = rmidi;
+ entry->c.text.read_size = 1024;
+ entry->c.text.read = snd_rawmidi_proc_info_read;
+ if (snd_info_register(entry) < 0) {
+ snd_info_free_entry(entry);
+ entry = NULL;
+ }
+ }
+ rmidi->proc_entry = entry;
+#if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE))
+ if (!rmidi->ops || !rmidi->ops->dev_register) { /* own registration mechanism */
+ if (snd_seq_device_new(rmidi->card, rmidi->device, SNDRV_SEQ_DEV_ID_MIDISYNTH, 0, &rmidi->seq_dev) >= 0) {
+ rmidi->seq_dev->private_data = rmidi;
+ rmidi->seq_dev->private_free = snd_rawmidi_dev_seq_free;
+ sprintf(rmidi->seq_dev->name, "MIDI %d-%d", rmidi->card->number, rmidi->device);
+ snd_device_register(rmidi->card, rmidi->seq_dev);
+ }
+ }
+#endif
+ return 0;
+}
+
+static int snd_rawmidi_dev_disconnect(snd_device_t *device)
+{
+ snd_rawmidi_t *rmidi = device->device_data;
+ int idx;
+
+ down(®ister_mutex);
+ idx = (rmidi->card->number * SNDRV_RAWMIDI_DEVICES) + rmidi->device;
+ snd_rawmidi_devices[idx] = NULL;
+ up(®ister_mutex);
+ return 0;
+}
+
+static int snd_rawmidi_dev_unregister(snd_device_t *device)
+{
+ int idx;
+ snd_rawmidi_t *rmidi = device->device_data;
+
+ snd_assert(rmidi != NULL, return -ENXIO);
+ down(®ister_mutex);
+ idx = (rmidi->card->number * SNDRV_RAWMIDI_DEVICES) + rmidi->device;
+ snd_rawmidi_devices[idx] = NULL;
+ if (rmidi->proc_entry) {
+ snd_info_unregister(rmidi->proc_entry);
+ rmidi->proc_entry = NULL;
+ }
+#ifdef CONFIG_SND_OSSEMUL
+ if (rmidi->ossreg) {
+ if ((int)rmidi->device == midi_map[rmidi->card->number]) {
+ snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, rmidi->card, 0);
+#ifdef SNDRV_OSS_INFO_DEV_MIDI
+ snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIDI, rmidi->card->number);
+#endif
+ }
+ if ((int)rmidi->device == amidi_map[rmidi->card->number])
+ snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, rmidi->card, 1);
+ rmidi->ossreg = 0;
+ }
+#endif /* CONFIG_SND_OSSEMUL */
+ if (rmidi->ops && rmidi->ops->dev_unregister)
+ rmidi->ops->dev_unregister(rmidi);
+ snd_unregister_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device);
+ up(®ister_mutex);
+#if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE))
+ if (rmidi->seq_dev) {
+ snd_device_free(rmidi->card, rmidi->seq_dev);
+ rmidi->seq_dev = NULL;
+ }
+#endif
+ return snd_rawmidi_free(rmidi);
+}
+
+/**
+ * snd_rawmidi_set_ops - set the rawmidi operators
+ * @rmidi: the rawmidi instance
+ * @stream: the stream direction, SNDRV_RAWMIDI_STREAM_XXX
+ * @ops: the operator table
+ *
+ * Sets the rawmidi operators for the given stream direction.
+ */
+void snd_rawmidi_set_ops(snd_rawmidi_t *rmidi, int stream, snd_rawmidi_ops_t *ops)
+{
+ struct list_head *list;
+ snd_rawmidi_substream_t *substream;
+
+ list_for_each(list, &rmidi->streams[stream].substreams) {
+ substream = list_entry(list, snd_rawmidi_substream_t, list);
+ substream->ops = ops;
+ }
+}
+
+/*
+ * ENTRY functions
+ */
+
+static int __init alsa_rawmidi_init(void)
+{
+
+ snd_ctl_register_ioctl(snd_rawmidi_control_ioctl);
+ snd_ctl_register_ioctl_compat(snd_rawmidi_control_ioctl);
+#ifdef CONFIG_SND_OSSEMUL
+ { int i;
+ /* check device map table */
+ for (i = 0; i < SNDRV_CARDS; i++) {
+ if (midi_map[i] < 0 || midi_map[i] >= SNDRV_RAWMIDI_DEVICES) {
+ snd_printk(KERN_ERR "invalid midi_map[%d] = %d\n", i, midi_map[i]);
+ midi_map[i] = 0;
+ }
+ if (amidi_map[i] < 0 || amidi_map[i] >= SNDRV_RAWMIDI_DEVICES) {
+ snd_printk(KERN_ERR "invalid amidi_map[%d] = %d\n", i, amidi_map[i]);
+ amidi_map[i] = 1;
+ }
+ }
+ }
+#endif /* CONFIG_SND_OSSEMUL */
+ return 0;
+}
+
+static void __exit alsa_rawmidi_exit(void)
+{
+ snd_ctl_unregister_ioctl(snd_rawmidi_control_ioctl);
+ snd_ctl_unregister_ioctl_compat(snd_rawmidi_control_ioctl);
+}
+
+module_init(alsa_rawmidi_init)
+module_exit(alsa_rawmidi_exit)
+
+EXPORT_SYMBOL(snd_rawmidi_output_params);
+EXPORT_SYMBOL(snd_rawmidi_input_params);
+EXPORT_SYMBOL(snd_rawmidi_drop_output);
+EXPORT_SYMBOL(snd_rawmidi_drain_output);
+EXPORT_SYMBOL(snd_rawmidi_drain_input);
+EXPORT_SYMBOL(snd_rawmidi_receive);
+EXPORT_SYMBOL(snd_rawmidi_transmit_empty);
+EXPORT_SYMBOL(snd_rawmidi_transmit_peek);
+EXPORT_SYMBOL(snd_rawmidi_transmit_ack);
+EXPORT_SYMBOL(snd_rawmidi_transmit);
+EXPORT_SYMBOL(snd_rawmidi_new);
+EXPORT_SYMBOL(snd_rawmidi_set_ops);
+EXPORT_SYMBOL(snd_rawmidi_info);
+EXPORT_SYMBOL(snd_rawmidi_info_select);
+EXPORT_SYMBOL(snd_rawmidi_kernel_open);
+EXPORT_SYMBOL(snd_rawmidi_kernel_release);
+EXPORT_SYMBOL(snd_rawmidi_kernel_read);
+EXPORT_SYMBOL(snd_rawmidi_kernel_write);