[net-next-2.6.git] / sound / drivers / opl3 / opl3_oss.c

/*
 *  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"

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;

	if (snd_BUG_ON(!arg))
		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;

	if (snd_BUG_ON(!arg))
		return -ENXIO;
	opl3 = arg->private_data;

	snd_opl3_synth_cleanup(opl3);

	snd_opl3_synth_use_dec(opl3);
	return 0;
}

/* load patch */

/* 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;
	struct sbi_instrument sbi;
	char name[32];
	int err, type;

	if (snd_BUG_ON(!arg))
		return -ENXIO;
	opl3 = arg->private_data;

	if (format == FM_PATCH)
		type = FM_PATCH_OPL2;
	else if (format == OPL3_PATCH)
		type = FM_PATCH_OPL3;
	else
		return -EINVAL;

	if (count < (int)sizeof(sbi)) {
		snd_printk(KERN_ERR "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(KERN_ERR "FM Error: Invalid instrument number %d\n",
			   sbi.channel);
		return -EINVAL;
	}

	memset(name, 0, sizeof(name));
	sprintf(name, "Chan%d", sbi.channel);

	err = snd_opl3_load_patch(opl3, sbi.channel, 127, type, name, NULL,
				  sbi.operators);
	if (err < 0)
		return err;

	return sizeof(sbi);
}

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

	if (snd_BUG_ON(!arg))
		return -ENXIO;
	opl3 = arg->private_data;
	switch (cmd) {
		case SNDCTL_FM_LOAD_INSTR:
			snd_printk(KERN_ERR "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;

	if (snd_BUG_ON(!arg))
		return -ENXIO;
	opl3 = arg->private_data;

	return 0;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Interface for OSS sequencer emulation
	3	*
	4	* Copyright (C) 2000 Uros Bizjak <uros@kss-loka.si>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*/
	20
	21	#include "opl3_voice.h"
1da177e4	22
5b1646a8 TI	23	static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg arg, void closure);
	24	static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg);
	25	static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg);
	26	static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg arg, int format, const char __user buf, int offs, int count);
	27	static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg);
1da177e4 LT	28
	29	/* */
	30
	31	static inline mm_segment_t snd_enter_user(void)
	32	{
	33	mm_segment_t fs = get_fs();
	34	set_fs(get_ds());
	35	return fs;
	36	}
	37
	38	static inline void snd_leave_user(mm_segment_t fs)
	39	{
	40	set_fs(fs);
	41	}
	42
	43	/* operators */
	44
5b1646a8	45	extern struct snd_midi_op opl3_ops;
1da177e4	46
5b1646a8	47	static struct snd_seq_oss_callback oss_callback = {
1da177e4 LT	48	.owner = THIS_MODULE,
	49	.open = snd_opl3_open_seq_oss,
	50	.close = snd_opl3_close_seq_oss,
	51	.ioctl = snd_opl3_ioctl_seq_oss,
	52	.load_patch = snd_opl3_load_patch_seq_oss,
	53	.reset = snd_opl3_reset_seq_oss,
	54	};
	55
5b1646a8	56	static int snd_opl3_oss_event_input(struct snd_seq_event *ev, int direct,
1da177e4 LT	57	void *private_data, int atomic, int hop)
1da177e4 LT	58	{
5b1646a8	59	struct snd_opl3 *opl3 = private_data;
1da177e4 LT	60
	61	if (ev->type != SNDRV_SEQ_EVENT_OSS)
	62	snd_midi_process_event(&opl3_ops, ev, opl3->oss_chset);
	63	return 0;
	64	}
	65
	66	/* ------------------------------ */
	67
	68	static void snd_opl3_oss_free_port(void *private_data)
	69	{
5b1646a8	70	struct snd_opl3 *opl3 = private_data;
1da177e4 LT	71
	72	snd_midi_channel_free_set(opl3->oss_chset);
	73	}
	74
5b1646a8	75	static int snd_opl3_oss_create_port(struct snd_opl3 * opl3)
1da177e4	76	{
5b1646a8	77	struct snd_seq_port_callback callbacks;
1da177e4 LT	78	char name[32];
	79	int voices, opl_ver;
	80
	81	voices = (opl3->hardware < OPL3_HW_OPL3) ?
	82	MAX_OPL2_VOICES : MAX_OPL3_VOICES;
	83	opl3->oss_chset = snd_midi_channel_alloc_set(voices);
	84	if (opl3->oss_chset == NULL)
	85	return -ENOMEM;
	86	opl3->oss_chset->private_data = opl3;
	87
	88	memset(&callbacks, 0, sizeof(callbacks));
	89	callbacks.owner = THIS_MODULE;
	90	callbacks.event_input = snd_opl3_oss_event_input;
	91	callbacks.private_free = snd_opl3_oss_free_port;
	92	callbacks.private_data = opl3;
	93
	94	opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
	95	sprintf(name, "OPL%i OSS Port", opl_ver);
	96
	97	opl3->oss_chset->client = opl3->seq_client;
	98	opl3->oss_chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks,
	99	SNDRV_SEQ_PORT_CAP_WRITE,
	100	SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC \|
450047a7 CL	101	SNDRV_SEQ_PORT_TYPE_MIDI_GM \|
	102	SNDRV_SEQ_PORT_TYPE_HARDWARE \|
	103	SNDRV_SEQ_PORT_TYPE_SYNTHESIZER,
1da177e4 LT	104	voices, voices,
	105	name);
	106	if (opl3->oss_chset->port < 0) {
5e315e92 DJ	107	int port;
5e315e92 DJ	108	port = opl3->oss_chset->port;
1da177e4	109	snd_midi_channel_free_set(opl3->oss_chset);
5e315e92	110	return port;
1da177e4 LT	111	}
	112	return 0;
	113	}
	114
	115	/* ------------------------------ */
	116
	117	/* register OSS synth */
5b1646a8	118	void snd_opl3_init_seq_oss(struct snd_opl3 opl3, char name)
1da177e4	119	{
5b1646a8 TI	120	struct snd_seq_oss_reg *arg;
5b1646a8 TI	121	struct snd_seq_device *dev;
1da177e4 LT	122
1da177e4 LT	123	if (snd_seq_device_new(opl3->card, 0, SNDRV_SEQ_DEV_ID_OSS,
5b1646a8	124	sizeof(struct snd_seq_oss_reg), &dev) < 0)
1da177e4 LT	125	return;
	126
	127	opl3->oss_seq_dev = dev;
	128	strlcpy(dev->name, name, sizeof(dev->name));
	129	arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
	130	arg->type = SYNTH_TYPE_FM;
	131	if (opl3->hardware < OPL3_HW_OPL3) {
	132	arg->subtype = FM_TYPE_ADLIB;
	133	arg->nvoices = MAX_OPL2_VOICES;
	134	} else {
	135	arg->subtype = FM_TYPE_OPL3;
	136	arg->nvoices = MAX_OPL3_VOICES;
	137	}
	138	arg->oper = oss_callback;
	139	arg->private_data = opl3;
	140
5e315e92 DJ	141	if (snd_opl3_oss_create_port(opl3)) {
	142	/* register to OSS synth table */
	143	snd_device_register(opl3->card, dev);
	144	}
1da177e4 LT	145	}
	146
	147	/* unregister */
5b1646a8	148	void snd_opl3_free_seq_oss(struct snd_opl3 *opl3)
1da177e4 LT	149	{
1da177e4 LT	150	if (opl3->oss_seq_dev) {
b1a3aa20	151	/* The instance should have been released in prior */
1da177e4 LT	152	opl3->oss_seq_dev = NULL;
	153	}
	154	}
	155
	156	/* ------------------------------ */
	157
	158	/* open OSS sequencer */
5b1646a8	159	static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg arg, void closure)
1da177e4	160	{
5b1646a8	161	struct snd_opl3 *opl3 = closure;
1da177e4 LT	162	int err;
1da177e4 LT	163
5e246b85 TI	164	if (snd_BUG_ON(!arg))
5e246b85 TI	165	return -ENXIO;
1da177e4 LT	166
	167	if ((err = snd_opl3_synth_setup(opl3)) < 0)
	168	return err;
	169
	170	/* fill the argument data */
	171	arg->private_data = opl3;
	172	arg->addr.client = opl3->oss_chset->client;
	173	arg->addr.port = opl3->oss_chset->port;
	174
	175	if ((err = snd_opl3_synth_use_inc(opl3)) < 0)
	176	return err;
	177
	178	opl3->synth_mode = SNDRV_OPL3_MODE_SYNTH;
	179	return 0;
	180	}
	181
	182	/* close OSS sequencer */
5b1646a8	183	static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg)
1da177e4	184	{
5b1646a8	185	struct snd_opl3 *opl3;
1da177e4	186
5e246b85 TI	187	if (snd_BUG_ON(!arg))
5e246b85 TI	188	return -ENXIO;
1da177e4 LT	189	opl3 = arg->private_data;
	190
	191	snd_opl3_synth_cleanup(opl3);
	192
	193	snd_opl3_synth_use_dec(opl3);
	194	return 0;
	195	}
	196
	197	/* load patch */
	198
1da177e4 LT	199	/* from sound_config.h */
	200	#define SBFM_MAXINSTR 256
	201
5b1646a8	202	static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
1da177e4 LT	203	const char __user *buf, int offs, int count)
1da177e4 LT	204	{
5b1646a8	205	struct snd_opl3 *opl3;
224a0332 TI	206	struct sbi_instrument sbi;
	207	char name[32];
	208	int err, type;
1da177e4	209
5e246b85 TI	210	if (snd_BUG_ON(!arg))
5e246b85 TI	211	return -ENXIO;
1da177e4 LT	212	opl3 = arg->private_data;
1da177e4 LT	213
224a0332 TI	214	if (format == FM_PATCH)
	215	type = FM_PATCH_OPL2;
	216	else if (format == OPL3_PATCH)
	217	type = FM_PATCH_OPL3;
	218	else
	219	return -EINVAL;
1da177e4	220
224a0332	221	if (count < (int)sizeof(sbi)) {
45203832	222	snd_printk(KERN_ERR "FM Error: Patch record too short\n");
224a0332 TI	223	return -EINVAL;
	224	}
	225	if (copy_from_user(&sbi, buf, sizeof(sbi)))
	226	return -EFAULT;
1da177e4	227
224a0332	228	if (sbi.channel < 0 \|\| sbi.channel >= SBFM_MAXINSTR) {
45203832	229	snd_printk(KERN_ERR "FM Error: Invalid instrument number %d\n",
224a0332 TI	230	sbi.channel);
	231	return -EINVAL;
	232	}
1da177e4	233
224a0332 TI	234	memset(name, 0, sizeof(name));
224a0332 TI	235	sprintf(name, "Chan%d", sbi.channel);
1da177e4	236
224a0332 TI	237	err = snd_opl3_load_patch(opl3, sbi.channel, 127, type, name, NULL,
	238	sbi.operators);
	239	if (err < 0)
	240	return err;
1da177e4	241
224a0332	242	return sizeof(sbi);
1da177e4 LT	243	}
	244
	245	/* ioctl */
5b1646a8	246	static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd,
1da177e4 LT	247	unsigned long ioarg)
1da177e4 LT	248	{
5b1646a8	249	struct snd_opl3 *opl3;
1da177e4	250
5e246b85 TI	251	if (snd_BUG_ON(!arg))
5e246b85 TI	252	return -ENXIO;
1da177e4 LT	253	opl3 = arg->private_data;
	254	switch (cmd) {
	255	case SNDCTL_FM_LOAD_INSTR:
45203832 TI	256	snd_printk(KERN_ERR "OPL3: "
	257	"Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. "
	258	"Fix the program.\n");
1da177e4 LT	259	return -EINVAL;
	260
	261	case SNDCTL_SYNTH_MEMAVL:
	262	return 0x7fffffff;
	263
	264	case SNDCTL_FM_4OP_ENABLE:
	265	// handled automatically by OPL instrument type
	266	return 0;
	267
	268	default:
	269	return -EINVAL;
	270	}
	271	return 0;
	272	}
	273
	274	/* reset device */
5b1646a8	275	static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg)
1da177e4	276	{
5b1646a8	277	struct snd_opl3 *opl3;
1da177e4	278
5e246b85 TI	279	if (snd_BUG_ON(!arg))
5e246b85 TI	280	return -ENXIO;
1da177e4 LT	281	opl3 = arg->private_data;
	282
	283	return 0;
	284	}