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"
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);
31 static inline mm_segment_t snd_enter_user(void)
33 mm_segment_t fs = get_fs();
38 static inline void snd_leave_user(mm_segment_t fs)
45 extern struct snd_midi_op opl3_ops;
47 static struct snd_seq_oss_callback oss_callback = {
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,
56 static int snd_opl3_oss_event_input(struct snd_seq_event *ev, int direct,
57 void *private_data, int atomic, int hop)
59 struct snd_opl3 *opl3 = private_data;
61 if (ev->type != SNDRV_SEQ_EVENT_OSS)
62 snd_midi_process_event(&opl3_ops, ev, opl3->oss_chset);
66 /* ------------------------------ */
68 static void snd_opl3_oss_free_port(void *private_data)
70 struct snd_opl3 *opl3 = private_data;
72 snd_midi_channel_free_set(opl3->oss_chset);
75 static int snd_opl3_oss_create_port(struct snd_opl3 * opl3)
77 struct snd_seq_port_callback callbacks;
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)
86 opl3->oss_chset->private_data = opl3;
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;
94 opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
95 sprintf(name, "OPL%i OSS Port", opl_ver);
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 |
101 SNDRV_SEQ_PORT_TYPE_MIDI_GM |
102 SNDRV_SEQ_PORT_TYPE_HARDWARE |
103 SNDRV_SEQ_PORT_TYPE_SYNTHESIZER,
106 if (opl3->oss_chset->port < 0) {
108 port = opl3->oss_chset->port;
109 snd_midi_channel_free_set(opl3->oss_chset);
115 /* ------------------------------ */
117 /* register OSS synth */
118 void snd_opl3_init_seq_oss(struct snd_opl3 *opl3, char *name)
120 struct snd_seq_oss_reg *arg;
121 struct snd_seq_device *dev;
123 if (snd_seq_device_new(opl3->card, 0, SNDRV_SEQ_DEV_ID_OSS,
124 sizeof(struct snd_seq_oss_reg), &dev) < 0)
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;
135 arg->subtype = FM_TYPE_OPL3;
136 arg->nvoices = MAX_OPL3_VOICES;
138 arg->oper = oss_callback;
139 arg->private_data = opl3;
141 if (snd_opl3_oss_create_port(opl3)) {
142 /* register to OSS synth table */
143 snd_device_register(opl3->card, dev);
148 void snd_opl3_free_seq_oss(struct snd_opl3 *opl3)
150 if (opl3->oss_seq_dev) {
151 /* The instance should have been released in prior */
152 opl3->oss_seq_dev = NULL;
156 /* ------------------------------ */
158 /* open OSS sequencer */
159 static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure)
161 struct snd_opl3 *opl3 = closure;
164 if (snd_BUG_ON(!arg))
167 if ((err = snd_opl3_synth_setup(opl3)) < 0)
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;
175 if ((err = snd_opl3_synth_use_inc(opl3)) < 0)
178 opl3->synth_mode = SNDRV_OPL3_MODE_SYNTH;
182 /* close OSS sequencer */
183 static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg)
185 struct snd_opl3 *opl3;
187 if (snd_BUG_ON(!arg))
189 opl3 = arg->private_data;
191 snd_opl3_synth_cleanup(opl3);
193 snd_opl3_synth_use_dec(opl3);
199 /* from sound_config.h */
200 #define SBFM_MAXINSTR 256
202 static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
203 const char __user *buf, int offs, int count)
205 struct snd_opl3 *opl3;
206 struct sbi_instrument sbi;
210 if (snd_BUG_ON(!arg))
212 opl3 = arg->private_data;
214 if (format == FM_PATCH)
215 type = FM_PATCH_OPL2;
216 else if (format == OPL3_PATCH)
217 type = FM_PATCH_OPL3;
221 if (count < (int)sizeof(sbi)) {
222 snd_printk(KERN_ERR "FM Error: Patch record too short\n");
225 if (copy_from_user(&sbi, buf, sizeof(sbi)))
228 if (sbi.channel < 0 || sbi.channel >= SBFM_MAXINSTR) {
229 snd_printk(KERN_ERR "FM Error: Invalid instrument number %d\n",
234 memset(name, 0, sizeof(name));
235 sprintf(name, "Chan%d", sbi.channel);
237 err = snd_opl3_load_patch(opl3, sbi.channel, 127, type, name, NULL,
246 static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd,
249 struct snd_opl3 *opl3;
251 if (snd_BUG_ON(!arg))
253 opl3 = arg->private_data;
255 case SNDCTL_FM_LOAD_INSTR:
256 snd_printk(KERN_ERR "OPL3: "
257 "Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. "
258 "Fix the program.\n");
261 case SNDCTL_SYNTH_MEMAVL:
264 case SNDCTL_FM_4OP_ENABLE:
265 // handled automatically by OPL instrument type
275 static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg)
277 struct snd_opl3 *opl3;
279 if (snd_BUG_ON(!arg))
281 opl3 = arg->private_data;