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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) |
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; |
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; |
121 | struct snd_seq_device *dev; | |
1da177e4 LT |
122 | |
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 | { |
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; |
163 | ||
5e246b85 TI |
164 | if (snd_BUG_ON(!arg)) |
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)) |
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) |
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)) |
211 | return -ENXIO; | |
1da177e4 LT |
212 | opl3 = arg->private_data; |
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)); |
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) |
248 | { | |
5b1646a8 | 249 | struct snd_opl3 *opl3; |
1da177e4 | 250 | |
5e246b85 TI |
251 | if (snd_BUG_ON(!arg)) |
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)) |
280 | return -ENXIO; | |
1da177e4 LT |
281 | opl3 = arg->private_data; |
282 | ||
283 | return 0; | |
284 | } |