sound/drivers/opl3/opl3_oss.c - third_party/linux - Git at Google

 /*
  *  Interface for OSS sequencer emulation
  *
  *  Copyright (C) 2000 Uros Bizjak <uros@kss-loka.si>
  *
  *   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 "opl3_voice.h"
 #include <linux/slab.h>

 static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure);
 static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg);
 static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg);
 static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format, const char __user *buf, int offs, int count);
 static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg);

 /* */

 static inline mm_segment_t snd_enter_user(void)
 {
 	mm_segment_t fs = get_fs();
 	set_fs(get_ds());
 	return fs;
 }

 static inline void snd_leave_user(mm_segment_t fs)
 {
 	set_fs(fs);
 }

 /* operators */

 extern struct snd_midi_op opl3_ops;

 static struct snd_seq_oss_callback oss_callback = {
 	.owner = 	THIS_MODULE,
 	.open =		snd_opl3_open_seq_oss,
 	.close =	snd_opl3_close_seq_oss,
 	.ioctl =	snd_opl3_ioctl_seq_oss,
 	.load_patch =	snd_opl3_load_patch_seq_oss,
 	.reset =	snd_opl3_reset_seq_oss,
 };

 static int snd_opl3_oss_event_input(struct snd_seq_event *ev, int direct,
 				    void *private_data, int atomic, int hop)
 {
 	struct snd_opl3 *opl3 = private_data;

 	if (ev->type != SNDRV_SEQ_EVENT_OSS)
 		snd_midi_process_event(&opl3_ops, ev, opl3->oss_chset);
 	return 0;
 }

 /* ------------------------------ */

 static void snd_opl3_oss_free_port(void *private_data)
 {
 	struct snd_opl3 *opl3 = private_data;

 	snd_midi_channel_free_set(opl3->oss_chset);
 }

 static int snd_opl3_oss_create_port(struct snd_opl3 * opl3)
 {
 	struct snd_seq_port_callback callbacks;
 	char name[32];
 	int voices, opl_ver;

 	voices = (opl3->hardware < OPL3_HW_OPL3) ?
 		MAX_OPL2_VOICES : MAX_OPL3_VOICES;
 	opl3->oss_chset = snd_midi_channel_alloc_set(voices);
 	if (opl3->oss_chset == NULL)
 		return -ENOMEM;
 	opl3->oss_chset->private_data = opl3;

 	memset(&callbacks, 0, sizeof(callbacks));
 	callbacks.owner = THIS_MODULE;
 	callbacks.event_input = snd_opl3_oss_event_input;
 	callbacks.private_free = snd_opl3_oss_free_port;
 	callbacks.private_data = opl3;

 	opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
 	sprintf(name, "OPL%i OSS Port", opl_ver);

 	opl3->oss_chset->client = opl3->seq_client;
 	opl3->oss_chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks,
 							  SNDRV_SEQ_PORT_CAP_WRITE,
 							  SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
 							  SNDRV_SEQ_PORT_TYPE_MIDI_GM |
 							  SNDRV_SEQ_PORT_TYPE_HARDWARE |
 							  SNDRV_SEQ_PORT_TYPE_SYNTHESIZER,
 							  voices, voices,
 							  name);
 	if (opl3->oss_chset->port < 0) {
 		int port;
 		port = opl3->oss_chset->port;
 		snd_midi_channel_free_set(opl3->oss_chset);
 		return port;
 	}
 	return 0;
 }

 /* ------------------------------ */

 /* register OSS synth */
 void snd_opl3_init_seq_oss(struct snd_opl3 *opl3, char *name)
 {
 	struct snd_seq_oss_reg *arg;
 	struct snd_seq_device *dev;

 	if (snd_seq_device_new(opl3->card, 0, SNDRV_SEQ_DEV_ID_OSS,
 			       sizeof(struct snd_seq_oss_reg), &dev) < 0)
 		return;

 	opl3->oss_seq_dev = dev;
 	strlcpy(dev->name, name, sizeof(dev->name));
 	arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
 	arg->type = SYNTH_TYPE_FM;
 	if (opl3->hardware < OPL3_HW_OPL3) {
 		arg->subtype = FM_TYPE_ADLIB;
 		arg->nvoices = MAX_OPL2_VOICES;
 	} else {
 		arg->subtype = FM_TYPE_OPL3;
 		arg->nvoices = MAX_OPL3_VOICES;
 	}
 	arg->oper = oss_callback;
 	arg->private_data = opl3;

 	if (snd_opl3_oss_create_port(opl3)) {
 		/* register to OSS synth table */
 		snd_device_register(opl3->card, dev);
 	}
 }

 /* unregister */
 void snd_opl3_free_seq_oss(struct snd_opl3 *opl3)
 {
 	if (opl3->oss_seq_dev) {
 		/* The instance should have been released in prior */
 		opl3->oss_seq_dev = NULL;
 	}
 }

 /* ------------------------------ */

 /* open OSS sequencer */
 static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure)
 {
 	struct snd_opl3 *opl3 = closure;
 	int err;

 	snd_assert(arg != NULL, return -ENXIO);

 	if ((err = snd_opl3_synth_setup(opl3)) < 0)
 		return err;

 	/* fill the argument data */
 	arg->private_data = opl3;
 	arg->addr.client = opl3->oss_chset->client;
 	arg->addr.port = opl3->oss_chset->port;

 	if ((err = snd_opl3_synth_use_inc(opl3)) < 0)
 		return err;

 	opl3->synth_mode = SNDRV_OPL3_MODE_SYNTH;
 	return 0;
 }

 /* close OSS sequencer */
 static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg)
 {
 	struct snd_opl3 *opl3;

 	snd_assert(arg != NULL, return -ENXIO);
 	opl3 = arg->private_data;

 	snd_opl3_synth_cleanup(opl3);

 	snd_opl3_synth_use_dec(opl3);
 	return 0;
 }

 /* load patch */

 /* offsets for SBI params */
 #define AM_VIB		0
 #define KSL_LEVEL	2
 #define ATTACK_DECAY	4
 #define SUSTAIN_RELEASE	6
 #define WAVE_SELECT	8

 /* offset for SBI instrument */
 #define CONNECTION	10
 #define OFFSET_4OP	11

 /* from sound_config.h */
 #define SBFM_MAXINSTR	256

 static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
 				       const char __user *buf, int offs, int count)
 {
 	struct snd_opl3 *opl3;
 	int err = -EINVAL;

 	snd_assert(arg != NULL, return -ENXIO);
 	opl3 = arg->private_data;

 	if ((format == FM_PATCH) || (format == OPL3_PATCH)) {
 		struct sbi_instrument sbi;

 		size_t size;
 		struct snd_seq_instr_header *put;
 		struct snd_seq_instr_data *data;
 		struct fm_xinstrument *xinstr;

 		struct snd_seq_event ev;
 		int i;

 		mm_segment_t fs;

 		if (count < (int)sizeof(sbi)) {
 			snd_printk("FM Error: Patch record too short\n");
 			return -EINVAL;
 		}
 		if (copy_from_user(&sbi, buf, sizeof(sbi)))
 			return -EFAULT;

 		if (sbi.channel < 0 || sbi.channel >= SBFM_MAXINSTR) {
 			snd_printk("FM Error: Invalid instrument number %d\n", sbi.channel);
 			return -EINVAL;
 		}

 		size = sizeof(*put) + sizeof(struct fm_xinstrument);
 		put = kzalloc(size, GFP_KERNEL);
 		if (put == NULL)
 			return -ENOMEM;
 		/* build header */
 		data = &put->data;
 		data->type = SNDRV_SEQ_INSTR_ATYPE_DATA;
 		strcpy(data->data.format, SNDRV_SEQ_INSTR_ID_OPL2_3);
 		/* build data section */
 		xinstr = (struct fm_xinstrument *)(data + 1);
 		xinstr->stype = FM_STRU_INSTR;

 		for (i = 0; i < 2; i++) {
 			xinstr->op[i].am_vib = sbi.operators[AM_VIB + i];
 			xinstr->op[i].ksl_level = sbi.operators[KSL_LEVEL + i];
 			xinstr->op[i].attack_decay = sbi.operators[ATTACK_DECAY + i];
 			xinstr->op[i].sustain_release = sbi.operators[SUSTAIN_RELEASE + i];
 			xinstr->op[i].wave_select = sbi.operators[WAVE_SELECT + i];
 		}
 		xinstr->feedback_connection[0] = sbi.operators[CONNECTION];

 		if (format == OPL3_PATCH) {
 			xinstr->type = FM_PATCH_OPL3;
 			for (i = 0; i < 2; i++) {
 				xinstr->op[i+2].am_vib = sbi.operators[OFFSET_4OP + AM_VIB + i];
 				xinstr->op[i+2].ksl_level = sbi.operators[OFFSET_4OP + KSL_LEVEL + i];
 				xinstr->op[i+2].attack_decay = sbi.operators[OFFSET_4OP + ATTACK_DECAY + i];
 				xinstr->op[i+2].sustain_release = sbi.operators[OFFSET_4OP + SUSTAIN_RELEASE + i];
 				xinstr->op[i+2].wave_select = sbi.operators[OFFSET_4OP + WAVE_SELECT + i];
 			}
 			xinstr->feedback_connection[1] = sbi.operators[OFFSET_4OP + CONNECTION];
 		} else {
 			xinstr->type = FM_PATCH_OPL2;
 		}

 		put->id.instr.std = SNDRV_SEQ_INSTR_TYPE2_OPL2_3;
 		put->id.instr.bank = 127;
 		put->id.instr.prg = sbi.channel;
 		put->cmd = SNDRV_SEQ_INSTR_PUT_CMD_CREATE;

 		memset (&ev, 0, sizeof(ev));
 		ev.source.client = SNDRV_SEQ_CLIENT_OSS;
 		ev.dest = arg->addr;

 		ev.flags = SNDRV_SEQ_EVENT_LENGTH_VARUSR;
 		ev.queue = SNDRV_SEQ_QUEUE_DIRECT;

 		fs = snd_enter_user();
 	__again:
 		ev.type = SNDRV_SEQ_EVENT_INSTR_PUT;
 		ev.data.ext.len = size;
 		ev.data.ext.ptr = put;

 		err = snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev,
 				    opl3->seq_client, 0, 0);
 		if (err == -EBUSY) {
 			struct snd_seq_instr_header remove;

 			memset (&remove, 0, sizeof(remove));
 			remove.cmd = SNDRV_SEQ_INSTR_FREE_CMD_SINGLE;
 			remove.id.instr = put->id.instr;

 			/* remove instrument */
 			ev.type = SNDRV_SEQ_EVENT_INSTR_FREE;
 			ev.data.ext.len = sizeof(remove);
 			ev.data.ext.ptr = &remove;

 			snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev,
 					    opl3->seq_client, 0, 0);
 			goto __again;
 		}
 		snd_leave_user(fs);

 		kfree(put);
 	}
 	return err;
 }

 /* ioctl */
 static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd,
 				  unsigned long ioarg)
 {
 	struct snd_opl3 *opl3;

 	snd_assert(arg != NULL, return -ENXIO);
 	opl3 = arg->private_data;
 	switch (cmd) {
 		case SNDCTL_FM_LOAD_INSTR:
 			snd_printk("OPL3: Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. Fix the program.\n");
 			return -EINVAL;

 		case SNDCTL_SYNTH_MEMAVL:
 			return 0x7fffffff;

 		case SNDCTL_FM_4OP_ENABLE:
 			// handled automatically by OPL instrument type
 			return 0;

 		default:
 			return -EINVAL;
 	}
 	return 0;
 }

 /* reset device */
 static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg)
 {
 	struct snd_opl3 *opl3;

 	snd_assert(arg != NULL, return -ENXIO);
 	opl3 = arg->private_data;

 	return 0;
 }
	/*
	* Interface for OSS sequencer emulation
	*
	* Copyright (C) 2000 Uros Bizjak <uros@kss-loka.si>
	*
	* 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 "opl3_voice.h"
	#include <linux/slab.h>

	static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg arg, void closure);
	static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg);
	static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg);
	static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg arg, int format, const char __user buf, int offs, int count);
	static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg);

	/* */

	static inline mm_segment_t snd_enter_user(void)
	{
	mm_segment_t fs = get_fs();
	set_fs(get_ds());
	return fs;
	}

	static inline void snd_leave_user(mm_segment_t fs)
	{
	set_fs(fs);
	}

	/* operators */

	extern struct snd_midi_op opl3_ops;

	static struct snd_seq_oss_callback oss_callback = {
	.owner = THIS_MODULE,
	.open = snd_opl3_open_seq_oss,
	.close = snd_opl3_close_seq_oss,
	.ioctl = snd_opl3_ioctl_seq_oss,
	.load_patch = snd_opl3_load_patch_seq_oss,
	.reset = snd_opl3_reset_seq_oss,
	};

	static int snd_opl3_oss_event_input(struct snd_seq_event *ev, int direct,
	void *private_data, int atomic, int hop)
	{
	struct snd_opl3 *opl3 = private_data;

	if (ev->type != SNDRV_SEQ_EVENT_OSS)
	snd_midi_process_event(&opl3_ops, ev, opl3->oss_chset);
	return 0;
	}

	/* ------------------------------ */

	static void snd_opl3_oss_free_port(void *private_data)
	{
	struct snd_opl3 *opl3 = private_data;

	snd_midi_channel_free_set(opl3->oss_chset);
	}

	static int snd_opl3_oss_create_port(struct snd_opl3 * opl3)
	{
	struct snd_seq_port_callback callbacks;
	char name[32];
	int voices, opl_ver;

	voices = (opl3->hardware < OPL3_HW_OPL3) ?
	MAX_OPL2_VOICES : MAX_OPL3_VOICES;
	opl3->oss_chset = snd_midi_channel_alloc_set(voices);
	if (opl3->oss_chset == NULL)
	return -ENOMEM;
	opl3->oss_chset->private_data = opl3;

	memset(&callbacks, 0, sizeof(callbacks));
	callbacks.owner = THIS_MODULE;
	callbacks.event_input = snd_opl3_oss_event_input;
	callbacks.private_free = snd_opl3_oss_free_port;
	callbacks.private_data = opl3;

	opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
	sprintf(name, "OPL%i OSS Port", opl_ver);

	opl3->oss_chset->client = opl3->seq_client;
	opl3->oss_chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks,
	SNDRV_SEQ_PORT_CAP_WRITE,
	SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC \|
	SNDRV_SEQ_PORT_TYPE_MIDI_GM \|
	SNDRV_SEQ_PORT_TYPE_HARDWARE \|
	SNDRV_SEQ_PORT_TYPE_SYNTHESIZER,
	voices, voices,
	name);
	if (opl3->oss_chset->port < 0) {
	int port;
	port = opl3->oss_chset->port;
	snd_midi_channel_free_set(opl3->oss_chset);
	return port;
	}
	return 0;
	}

	/* ------------------------------ */

	/* register OSS synth */
	void snd_opl3_init_seq_oss(struct snd_opl3 opl3, char name)
	{
	struct snd_seq_oss_reg *arg;
	struct snd_seq_device *dev;

	if (snd_seq_device_new(opl3->card, 0, SNDRV_SEQ_DEV_ID_OSS,
	sizeof(struct snd_seq_oss_reg), &dev) < 0)
	return;

	opl3->oss_seq_dev = dev;
	strlcpy(dev->name, name, sizeof(dev->name));
	arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
	arg->type = SYNTH_TYPE_FM;
	if (opl3->hardware < OPL3_HW_OPL3) {
	arg->subtype = FM_TYPE_ADLIB;
	arg->nvoices = MAX_OPL2_VOICES;
	} else {
	arg->subtype = FM_TYPE_OPL3;
	arg->nvoices = MAX_OPL3_VOICES;
	}
	arg->oper = oss_callback;
	arg->private_data = opl3;

	if (snd_opl3_oss_create_port(opl3)) {
	/* register to OSS synth table */
	snd_device_register(opl3->card, dev);
	}
	}

	/* unregister */
	void snd_opl3_free_seq_oss(struct snd_opl3 *opl3)
	{
	if (opl3->oss_seq_dev) {
	/* The instance should have been released in prior */
	opl3->oss_seq_dev = NULL;
	}
	}

	/* ------------------------------ */

	/* open OSS sequencer */
	static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg arg, void closure)
	{
	struct snd_opl3 *opl3 = closure;
	int err;

	snd_assert(arg != NULL, return -ENXIO);

	if ((err = snd_opl3_synth_setup(opl3)) < 0)
	return err;

	/* fill the argument data */
	arg->private_data = opl3;
	arg->addr.client = opl3->oss_chset->client;
	arg->addr.port = opl3->oss_chset->port;

	if ((err = snd_opl3_synth_use_inc(opl3)) < 0)
	return err;

	opl3->synth_mode = SNDRV_OPL3_MODE_SYNTH;
	return 0;
	}

	/* close OSS sequencer */
	static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg)
	{
	struct snd_opl3 *opl3;

	snd_assert(arg != NULL, return -ENXIO);
	opl3 = arg->private_data;

	snd_opl3_synth_cleanup(opl3);

	snd_opl3_synth_use_dec(opl3);
	return 0;
	}

	/* load patch */

	/* offsets for SBI params */
	#define AM_VIB 0
	#define KSL_LEVEL 2
	#define ATTACK_DECAY 4
	#define SUSTAIN_RELEASE 6
	#define WAVE_SELECT 8

	/* offset for SBI instrument */
	#define CONNECTION 10
	#define OFFSET_4OP 11

	/* from sound_config.h */
	#define SBFM_MAXINSTR 256

	static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
	const char __user *buf, int offs, int count)
	{
	struct snd_opl3 *opl3;
	int err = -EINVAL;

	snd_assert(arg != NULL, return -ENXIO);
	opl3 = arg->private_data;

	if ((format == FM_PATCH) \|\| (format == OPL3_PATCH)) {
	struct sbi_instrument sbi;

	size_t size;
	struct snd_seq_instr_header *put;
	struct snd_seq_instr_data *data;
	struct fm_xinstrument *xinstr;

	struct snd_seq_event ev;
	int i;

	mm_segment_t fs;

	if (count < (int)sizeof(sbi)) {
	snd_printk("FM Error: Patch record too short\n");
	return -EINVAL;
	}
	if (copy_from_user(&sbi, buf, sizeof(sbi)))
	return -EFAULT;

	if (sbi.channel < 0 \|\| sbi.channel >= SBFM_MAXINSTR) {
	snd_printk("FM Error: Invalid instrument number %d\n", sbi.channel);
	return -EINVAL;
	}

	size = sizeof(*put) + sizeof(struct fm_xinstrument);
	put = kzalloc(size, GFP_KERNEL);
	if (put == NULL)
	return -ENOMEM;
	/* build header */
	data = &put->data;
	data->type = SNDRV_SEQ_INSTR_ATYPE_DATA;
	strcpy(data->data.format, SNDRV_SEQ_INSTR_ID_OPL2_3);
	/* build data section */
	xinstr = (struct fm_xinstrument *)(data + 1);
	xinstr->stype = FM_STRU_INSTR;

	for (i = 0; i < 2; i++) {
	xinstr->op[i].am_vib = sbi.operators[AM_VIB + i];
	xinstr->op[i].ksl_level = sbi.operators[KSL_LEVEL + i];
	xinstr->op[i].attack_decay = sbi.operators[ATTACK_DECAY + i];
	xinstr->op[i].sustain_release = sbi.operators[SUSTAIN_RELEASE + i];
	xinstr->op[i].wave_select = sbi.operators[WAVE_SELECT + i];
	}
	xinstr->feedback_connection[0] = sbi.operators[CONNECTION];

	if (format == OPL3_PATCH) {
	xinstr->type = FM_PATCH_OPL3;
	for (i = 0; i < 2; i++) {
	xinstr->op[i+2].am_vib = sbi.operators[OFFSET_4OP + AM_VIB + i];
	xinstr->op[i+2].ksl_level = sbi.operators[OFFSET_4OP + KSL_LEVEL + i];
	xinstr->op[i+2].attack_decay = sbi.operators[OFFSET_4OP + ATTACK_DECAY + i];
	xinstr->op[i+2].sustain_release = sbi.operators[OFFSET_4OP + SUSTAIN_RELEASE + i];
	xinstr->op[i+2].wave_select = sbi.operators[OFFSET_4OP + WAVE_SELECT + i];
	}
	xinstr->feedback_connection[1] = sbi.operators[OFFSET_4OP + CONNECTION];
	} else {
	xinstr->type = FM_PATCH_OPL2;
	}

	put->id.instr.std = SNDRV_SEQ_INSTR_TYPE2_OPL2_3;
	put->id.instr.bank = 127;
	put->id.instr.prg = sbi.channel;
	put->cmd = SNDRV_SEQ_INSTR_PUT_CMD_CREATE;

	memset (&ev, 0, sizeof(ev));
	ev.source.client = SNDRV_SEQ_CLIENT_OSS;
	ev.dest = arg->addr;

	ev.flags = SNDRV_SEQ_EVENT_LENGTH_VARUSR;
	ev.queue = SNDRV_SEQ_QUEUE_DIRECT;

	fs = snd_enter_user();
	__again:
	ev.type = SNDRV_SEQ_EVENT_INSTR_PUT;
	ev.data.ext.len = size;
	ev.data.ext.ptr = put;

	err = snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev,
	opl3->seq_client, 0, 0);
	if (err == -EBUSY) {
	struct snd_seq_instr_header remove;

	memset (&remove, 0, sizeof(remove));
	remove.cmd = SNDRV_SEQ_INSTR_FREE_CMD_SINGLE;
	remove.id.instr = put->id.instr;

	/* remove instrument */
	ev.type = SNDRV_SEQ_EVENT_INSTR_FREE;
	ev.data.ext.len = sizeof(remove);
	ev.data.ext.ptr = &remove;

	snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev,
	opl3->seq_client, 0, 0);
	goto __again;
	}
	snd_leave_user(fs);

	kfree(put);
	}
	return err;
	}

	/* ioctl */
	static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd,
	unsigned long ioarg)
	{
	struct snd_opl3 *opl3;

	snd_assert(arg != NULL, return -ENXIO);
	opl3 = arg->private_data;
	switch (cmd) {
	case SNDCTL_FM_LOAD_INSTR:
	snd_printk("OPL3: Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. Fix the program.\n");
	return -EINVAL;

	case SNDCTL_SYNTH_MEMAVL:
	return 0x7fffffff;

	case SNDCTL_FM_4OP_ENABLE:
	// handled automatically by OPL instrument type
	return 0;

	default:
	return -EINVAL;
	}
	return 0;
	}

	/* reset device */
	static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg)
	{
	struct snd_opl3 *opl3;

	snd_assert(arg != NULL, return -ENXIO);
	opl3 = arg->private_data;

	return 0;
	}