Commit | Line | Data |
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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 | ||
d81a6d71 | 21 | #include <linux/export.h> |
1da177e4 | 22 | #include "opl3_voice.h" |
1da177e4 | 23 | |
5b1646a8 TI |
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); | |
1da177e4 LT |
29 | |
30 | /* */ | |
31 | ||
32 | static inline mm_segment_t snd_enter_user(void) | |
33 | { | |
34 | mm_segment_t fs = get_fs(); | |
35 | set_fs(get_ds()); | |
36 | return fs; | |
37 | } | |
38 | ||
39 | static inline void snd_leave_user(mm_segment_t fs) | |
40 | { | |
41 | set_fs(fs); | |
42 | } | |
43 | ||
44 | /* operators */ | |
45 | ||
5b1646a8 | 46 | extern struct snd_midi_op opl3_ops; |
1da177e4 | 47 | |
5b1646a8 | 48 | static struct snd_seq_oss_callback oss_callback = { |
1da177e4 LT |
49 | .owner = THIS_MODULE, |
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, | |
55 | }; | |
56 | ||
5b1646a8 | 57 | static int snd_opl3_oss_event_input(struct snd_seq_event *ev, int direct, |
1da177e4 LT |
58 | void *private_data, int atomic, int hop) |
59 | { | |
5b1646a8 | 60 | struct snd_opl3 *opl3 = private_data; |
1da177e4 LT |
61 | |
62 | if (ev->type != SNDRV_SEQ_EVENT_OSS) | |
63 | snd_midi_process_event(&opl3_ops, ev, opl3->oss_chset); | |
64 | return 0; | |
65 | } | |
66 | ||
67 | /* ------------------------------ */ | |
68 | ||
69 | static void snd_opl3_oss_free_port(void *private_data) | |
70 | { | |
5b1646a8 | 71 | struct snd_opl3 *opl3 = private_data; |
1da177e4 LT |
72 | |
73 | snd_midi_channel_free_set(opl3->oss_chset); | |
74 | } | |
75 | ||
5b1646a8 | 76 | static int snd_opl3_oss_create_port(struct snd_opl3 * opl3) |
1da177e4 | 77 | { |
5b1646a8 | 78 | struct snd_seq_port_callback callbacks; |
1da177e4 LT |
79 | char name[32]; |
80 | int voices, opl_ver; | |
81 | ||
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) | |
86 | return -ENOMEM; | |
87 | opl3->oss_chset->private_data = opl3; | |
88 | ||
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; | |
94 | ||
95 | opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8; | |
96 | sprintf(name, "OPL%i OSS Port", opl_ver); | |
97 | ||
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 | | |
450047a7 CL |
102 | SNDRV_SEQ_PORT_TYPE_MIDI_GM | |
103 | SNDRV_SEQ_PORT_TYPE_HARDWARE | | |
104 | SNDRV_SEQ_PORT_TYPE_SYNTHESIZER, | |
1da177e4 LT |
105 | voices, voices, |
106 | name); | |
107 | if (opl3->oss_chset->port < 0) { | |
5e315e92 DJ |
108 | int port; |
109 | port = opl3->oss_chset->port; | |
1da177e4 | 110 | snd_midi_channel_free_set(opl3->oss_chset); |
5e315e92 | 111 | return port; |
1da177e4 LT |
112 | } |
113 | return 0; | |
114 | } | |
115 | ||
116 | /* ------------------------------ */ | |
117 | ||
118 | /* register OSS synth */ | |
5b1646a8 | 119 | void snd_opl3_init_seq_oss(struct snd_opl3 *opl3, char *name) |
1da177e4 | 120 | { |
5b1646a8 TI |
121 | struct snd_seq_oss_reg *arg; |
122 | struct snd_seq_device *dev; | |
1da177e4 LT |
123 | |
124 | if (snd_seq_device_new(opl3->card, 0, SNDRV_SEQ_DEV_ID_OSS, | |
5b1646a8 | 125 | sizeof(struct snd_seq_oss_reg), &dev) < 0) |
1da177e4 LT |
126 | return; |
127 | ||
128 | opl3->oss_seq_dev = dev; | |
129 | strlcpy(dev->name, name, sizeof(dev->name)); | |
130 | arg = SNDRV_SEQ_DEVICE_ARGPTR(dev); | |
131 | arg->type = SYNTH_TYPE_FM; | |
132 | if (opl3->hardware < OPL3_HW_OPL3) { | |
133 | arg->subtype = FM_TYPE_ADLIB; | |
134 | arg->nvoices = MAX_OPL2_VOICES; | |
135 | } else { | |
136 | arg->subtype = FM_TYPE_OPL3; | |
137 | arg->nvoices = MAX_OPL3_VOICES; | |
138 | } | |
139 | arg->oper = oss_callback; | |
140 | arg->private_data = opl3; | |
141 | ||
5e315e92 DJ |
142 | if (snd_opl3_oss_create_port(opl3)) { |
143 | /* register to OSS synth table */ | |
144 | snd_device_register(opl3->card, dev); | |
145 | } | |
1da177e4 LT |
146 | } |
147 | ||
148 | /* unregister */ | |
5b1646a8 | 149 | void snd_opl3_free_seq_oss(struct snd_opl3 *opl3) |
1da177e4 LT |
150 | { |
151 | if (opl3->oss_seq_dev) { | |
b1a3aa20 | 152 | /* The instance should have been released in prior */ |
1da177e4 LT |
153 | opl3->oss_seq_dev = NULL; |
154 | } | |
155 | } | |
156 | ||
157 | /* ------------------------------ */ | |
158 | ||
159 | /* open OSS sequencer */ | |
5b1646a8 | 160 | static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure) |
1da177e4 | 161 | { |
5b1646a8 | 162 | struct snd_opl3 *opl3 = closure; |
1da177e4 LT |
163 | int err; |
164 | ||
5e246b85 TI |
165 | if (snd_BUG_ON(!arg)) |
166 | return -ENXIO; | |
1da177e4 LT |
167 | |
168 | if ((err = snd_opl3_synth_setup(opl3)) < 0) | |
169 | return err; | |
170 | ||
171 | /* fill the argument data */ | |
172 | arg->private_data = opl3; | |
173 | arg->addr.client = opl3->oss_chset->client; | |
174 | arg->addr.port = opl3->oss_chset->port; | |
175 | ||
176 | if ((err = snd_opl3_synth_use_inc(opl3)) < 0) | |
177 | return err; | |
178 | ||
179 | opl3->synth_mode = SNDRV_OPL3_MODE_SYNTH; | |
180 | return 0; | |
181 | } | |
182 | ||
183 | /* close OSS sequencer */ | |
5b1646a8 | 184 | static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg) |
1da177e4 | 185 | { |
5b1646a8 | 186 | struct snd_opl3 *opl3; |
1da177e4 | 187 | |
5e246b85 TI |
188 | if (snd_BUG_ON(!arg)) |
189 | return -ENXIO; | |
1da177e4 LT |
190 | opl3 = arg->private_data; |
191 | ||
192 | snd_opl3_synth_cleanup(opl3); | |
193 | ||
194 | snd_opl3_synth_use_dec(opl3); | |
195 | return 0; | |
196 | } | |
197 | ||
198 | /* load patch */ | |
199 | ||
1da177e4 LT |
200 | /* from sound_config.h */ |
201 | #define SBFM_MAXINSTR 256 | |
202 | ||
5b1646a8 | 203 | static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format, |
1da177e4 LT |
204 | const char __user *buf, int offs, int count) |
205 | { | |
5b1646a8 | 206 | struct snd_opl3 *opl3; |
224a0332 TI |
207 | struct sbi_instrument sbi; |
208 | char name[32]; | |
209 | int err, type; | |
1da177e4 | 210 | |
5e246b85 TI |
211 | if (snd_BUG_ON(!arg)) |
212 | return -ENXIO; | |
1da177e4 LT |
213 | opl3 = arg->private_data; |
214 | ||
224a0332 TI |
215 | if (format == FM_PATCH) |
216 | type = FM_PATCH_OPL2; | |
217 | else if (format == OPL3_PATCH) | |
218 | type = FM_PATCH_OPL3; | |
219 | else | |
220 | return -EINVAL; | |
1da177e4 | 221 | |
224a0332 | 222 | if (count < (int)sizeof(sbi)) { |
45203832 | 223 | snd_printk(KERN_ERR "FM Error: Patch record too short\n"); |
224a0332 TI |
224 | return -EINVAL; |
225 | } | |
226 | if (copy_from_user(&sbi, buf, sizeof(sbi))) | |
227 | return -EFAULT; | |
1da177e4 | 228 | |
224a0332 | 229 | if (sbi.channel < 0 || sbi.channel >= SBFM_MAXINSTR) { |
45203832 | 230 | snd_printk(KERN_ERR "FM Error: Invalid instrument number %d\n", |
224a0332 TI |
231 | sbi.channel); |
232 | return -EINVAL; | |
233 | } | |
1da177e4 | 234 | |
224a0332 TI |
235 | memset(name, 0, sizeof(name)); |
236 | sprintf(name, "Chan%d", sbi.channel); | |
1da177e4 | 237 | |
224a0332 TI |
238 | err = snd_opl3_load_patch(opl3, sbi.channel, 127, type, name, NULL, |
239 | sbi.operators); | |
240 | if (err < 0) | |
241 | return err; | |
1da177e4 | 242 | |
224a0332 | 243 | return sizeof(sbi); |
1da177e4 LT |
244 | } |
245 | ||
246 | /* ioctl */ | |
5b1646a8 | 247 | static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, |
1da177e4 LT |
248 | unsigned long ioarg) |
249 | { | |
5b1646a8 | 250 | struct snd_opl3 *opl3; |
1da177e4 | 251 | |
5e246b85 TI |
252 | if (snd_BUG_ON(!arg)) |
253 | return -ENXIO; | |
1da177e4 LT |
254 | opl3 = arg->private_data; |
255 | switch (cmd) { | |
256 | case SNDCTL_FM_LOAD_INSTR: | |
45203832 TI |
257 | snd_printk(KERN_ERR "OPL3: " |
258 | "Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. " | |
259 | "Fix the program.\n"); | |
1da177e4 LT |
260 | return -EINVAL; |
261 | ||
262 | case SNDCTL_SYNTH_MEMAVL: | |
263 | return 0x7fffffff; | |
264 | ||
265 | case SNDCTL_FM_4OP_ENABLE: | |
266 | // handled automatically by OPL instrument type | |
267 | return 0; | |
268 | ||
269 | default: | |
270 | return -EINVAL; | |
271 | } | |
272 | return 0; | |
273 | } | |
274 | ||
275 | /* reset device */ | |
5b1646a8 | 276 | static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg) |
1da177e4 | 277 | { |
5b1646a8 | 278 | struct snd_opl3 *opl3; |
1da177e4 | 279 | |
5e246b85 TI |
280 | if (snd_BUG_ON(!arg)) |
281 | return -ENXIO; | |
1da177e4 LT |
282 | opl3 = arg->private_data; |
283 | ||
284 | return 0; | |
285 | } |