2 * Interface for OSS sequencer emulation
4 * Copyright (C) 2000 Uros Bizjak <uros@kss-loka.si>
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.
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.
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
21 #include "opl3_voice.h"
22 #include <linux/slab.h>
24 static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure);
25 static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg);
26 static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg);
27 static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format, const char __user *buf, int offs, int count);
28 static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg);
32 static inline mm_segment_t snd_enter_user(void)
34 mm_segment_t fs = get_fs();
39 static inline void snd_leave_user(mm_segment_t fs)
46 extern struct snd_midi_op opl3_ops;
48 static struct snd_seq_oss_callback oss_callback = {
50 .open = snd_opl3_open_seq_oss,
51 .close = snd_opl3_close_seq_oss,
52 .ioctl = snd_opl3_ioctl_seq_oss,
53 .load_patch = snd_opl3_load_patch_seq_oss,
54 .reset = snd_opl3_reset_seq_oss,
57 static int snd_opl3_oss_event_input(struct snd_seq_event *ev, int direct,
58 void *private_data, int atomic, int hop)
60 struct snd_opl3 *opl3 = private_data;
62 if (ev->type != SNDRV_SEQ_EVENT_OSS)
63 snd_midi_process_event(&opl3_ops, ev, opl3->oss_chset);
67 /* ------------------------------ */
69 static void snd_opl3_oss_free_port(void *private_data)
71 struct snd_opl3 *opl3 = private_data;
73 snd_midi_channel_free_set(opl3->oss_chset);
76 static int snd_opl3_oss_create_port(struct snd_opl3 * opl3)
78 struct snd_seq_port_callback callbacks;
82 voices = (opl3->hardware < OPL3_HW_OPL3) ?
83 MAX_OPL2_VOICES : MAX_OPL3_VOICES;
84 opl3->oss_chset = snd_midi_channel_alloc_set(voices);
85 if (opl3->oss_chset == NULL)
87 opl3->oss_chset->private_data = opl3;
89 memset(&callbacks, 0, sizeof(callbacks));
90 callbacks.owner = THIS_MODULE;
91 callbacks.event_input = snd_opl3_oss_event_input;
92 callbacks.private_free = snd_opl3_oss_free_port;
93 callbacks.private_data = opl3;
95 opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
96 sprintf(name, "OPL%i OSS Port", opl_ver);
98 opl3->oss_chset->client = opl3->seq_client;
99 opl3->oss_chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks,
100 SNDRV_SEQ_PORT_CAP_WRITE,
101 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
102 SNDRV_SEQ_PORT_TYPE_MIDI_GM,
105 if (opl3->oss_chset->port < 0) {
107 port = opl3->oss_chset->port;
108 snd_midi_channel_free_set(opl3->oss_chset);
114 /* ------------------------------ */
116 /* register OSS synth */
117 void snd_opl3_init_seq_oss(struct snd_opl3 *opl3, char *name)
119 struct snd_seq_oss_reg *arg;
120 struct snd_seq_device *dev;
122 if (snd_seq_device_new(opl3->card, 0, SNDRV_SEQ_DEV_ID_OSS,
123 sizeof(struct snd_seq_oss_reg), &dev) < 0)
126 opl3->oss_seq_dev = dev;
127 strlcpy(dev->name, name, sizeof(dev->name));
128 arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
129 arg->type = SYNTH_TYPE_FM;
130 if (opl3->hardware < OPL3_HW_OPL3) {
131 arg->subtype = FM_TYPE_ADLIB;
132 arg->nvoices = MAX_OPL2_VOICES;
134 arg->subtype = FM_TYPE_OPL3;
135 arg->nvoices = MAX_OPL3_VOICES;
137 arg->oper = oss_callback;
138 arg->private_data = opl3;
140 if (snd_opl3_oss_create_port(opl3)) {
141 /* register to OSS synth table */
142 snd_device_register(opl3->card, dev);
147 void snd_opl3_free_seq_oss(struct snd_opl3 *opl3)
149 if (opl3->oss_seq_dev) {
150 /* The instance should have been released in prior */
151 opl3->oss_seq_dev = NULL;
155 /* ------------------------------ */
157 /* open OSS sequencer */
158 static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure)
160 struct snd_opl3 *opl3 = closure;
163 snd_assert(arg != NULL, return -ENXIO);
165 if ((err = snd_opl3_synth_setup(opl3)) < 0)
168 /* fill the argument data */
169 arg->private_data = opl3;
170 arg->addr.client = opl3->oss_chset->client;
171 arg->addr.port = opl3->oss_chset->port;
173 if ((err = snd_opl3_synth_use_inc(opl3)) < 0)
176 opl3->synth_mode = SNDRV_OPL3_MODE_SYNTH;
180 /* close OSS sequencer */
181 static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg)
183 struct snd_opl3 *opl3;
185 snd_assert(arg != NULL, return -ENXIO);
186 opl3 = arg->private_data;
188 snd_opl3_synth_cleanup(opl3);
190 snd_opl3_synth_use_dec(opl3);
196 /* offsets for SBI params */
199 #define ATTACK_DECAY 4
200 #define SUSTAIN_RELEASE 6
201 #define WAVE_SELECT 8
203 /* offset for SBI instrument */
204 #define CONNECTION 10
205 #define OFFSET_4OP 11
207 /* from sound_config.h */
208 #define SBFM_MAXINSTR 256
210 static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
211 const char __user *buf, int offs, int count)
213 struct snd_opl3 *opl3;
216 snd_assert(arg != NULL, return -ENXIO);
217 opl3 = arg->private_data;
219 if ((format == FM_PATCH) || (format == OPL3_PATCH)) {
220 struct sbi_instrument sbi;
223 struct snd_seq_instr_header *put;
224 struct snd_seq_instr_data *data;
225 struct fm_xinstrument *xinstr;
227 struct snd_seq_event ev;
232 if (count < (int)sizeof(sbi)) {
233 snd_printk("FM Error: Patch record too short\n");
236 if (copy_from_user(&sbi, buf, sizeof(sbi)))
239 if (sbi.channel < 0 || sbi.channel >= SBFM_MAXINSTR) {
240 snd_printk("FM Error: Invalid instrument number %d\n", sbi.channel);
244 size = sizeof(*put) + sizeof(struct fm_xinstrument);
245 put = kzalloc(size, GFP_KERNEL);
250 data->type = SNDRV_SEQ_INSTR_ATYPE_DATA;
251 strcpy(data->data.format, SNDRV_SEQ_INSTR_ID_OPL2_3);
252 /* build data section */
253 xinstr = (struct fm_xinstrument *)(data + 1);
254 xinstr->stype = FM_STRU_INSTR;
256 for (i = 0; i < 2; i++) {
257 xinstr->op[i].am_vib = sbi.operators[AM_VIB + i];
258 xinstr->op[i].ksl_level = sbi.operators[KSL_LEVEL + i];
259 xinstr->op[i].attack_decay = sbi.operators[ATTACK_DECAY + i];
260 xinstr->op[i].sustain_release = sbi.operators[SUSTAIN_RELEASE + i];
261 xinstr->op[i].wave_select = sbi.operators[WAVE_SELECT + i];
263 xinstr->feedback_connection[0] = sbi.operators[CONNECTION];
265 if (format == OPL3_PATCH) {
266 xinstr->type = FM_PATCH_OPL3;
267 for (i = 0; i < 2; i++) {
268 xinstr->op[i+2].am_vib = sbi.operators[OFFSET_4OP + AM_VIB + i];
269 xinstr->op[i+2].ksl_level = sbi.operators[OFFSET_4OP + KSL_LEVEL + i];
270 xinstr->op[i+2].attack_decay = sbi.operators[OFFSET_4OP + ATTACK_DECAY + i];
271 xinstr->op[i+2].sustain_release = sbi.operators[OFFSET_4OP + SUSTAIN_RELEASE + i];
272 xinstr->op[i+2].wave_select = sbi.operators[OFFSET_4OP + WAVE_SELECT + i];
274 xinstr->feedback_connection[1] = sbi.operators[OFFSET_4OP + CONNECTION];
276 xinstr->type = FM_PATCH_OPL2;
279 put->id.instr.std = SNDRV_SEQ_INSTR_TYPE2_OPL2_3;
280 put->id.instr.bank = 127;
281 put->id.instr.prg = sbi.channel;
282 put->cmd = SNDRV_SEQ_INSTR_PUT_CMD_CREATE;
284 memset (&ev, 0, sizeof(ev));
285 ev.source.client = SNDRV_SEQ_CLIENT_OSS;
288 ev.flags = SNDRV_SEQ_EVENT_LENGTH_VARUSR;
289 ev.queue = SNDRV_SEQ_QUEUE_DIRECT;
291 fs = snd_enter_user();
293 ev.type = SNDRV_SEQ_EVENT_INSTR_PUT;
294 ev.data.ext.len = size;
295 ev.data.ext.ptr = put;
297 err = snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev,
298 opl3->seq_client, 0, 0);
300 struct snd_seq_instr_header remove;
302 memset (&remove, 0, sizeof(remove));
303 remove.cmd = SNDRV_SEQ_INSTR_FREE_CMD_SINGLE;
304 remove.id.instr = put->id.instr;
306 /* remove instrument */
307 ev.type = SNDRV_SEQ_EVENT_INSTR_FREE;
308 ev.data.ext.len = sizeof(remove);
309 ev.data.ext.ptr = &remove;
311 snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev,
312 opl3->seq_client, 0, 0);
323 static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd,
326 struct snd_opl3 *opl3;
328 snd_assert(arg != NULL, return -ENXIO);
329 opl3 = arg->private_data;
331 case SNDCTL_FM_LOAD_INSTR:
332 snd_printk("OPL3: Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. Fix the program.\n");
335 case SNDCTL_SYNTH_MEMAVL:
338 case SNDCTL_FM_4OP_ENABLE:
339 // handled automatically by OPL instrument type
349 static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg)
351 struct snd_opl3 *opl3;
353 snd_assert(arg != NULL, return -ENXIO);
354 opl3 = arg->private_data;