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!

1 files changed, 1680 insertions, 0 deletions

diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
new file mode 100644
index 00000000000..edba4118271
--- /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(&params, 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, &params);
+		case SNDRV_RAWMIDI_STREAM_INPUT:
+			if (rfile->input == NULL)
+				return -EINVAL;
+			return snd_rawmidi_input_params(rfile->input, &params);
+		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(&register_mutex);
+	idx = (rmidi->card->number * SNDRV_RAWMIDI_DEVICES) + rmidi->device;
+	if (snd_rawmidi_devices[idx] != NULL) {
+		up(&register_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(&register_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(&register_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(&register_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(&register_mutex);
+	idx = (rmidi->card->number * SNDRV_RAWMIDI_DEVICES) + rmidi->device;
+	snd_rawmidi_devices[idx] = NULL;
+	up(&register_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(&register_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(&register_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);