Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
f30c2269 | 2 | * sound/oss/dev_table.c |
1da177e4 LT |
3 | * |
4 | * Device call tables. | |
5 | * | |
6 | * | |
7 | * Copyright (C) by Hannu Savolainen 1993-1997 | |
8 | * | |
9 | * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL) | |
10 | * Version 2 (June 1991). See the "COPYING" file distributed with this software | |
11 | * for more info. | |
12 | */ | |
13 | ||
14 | #include <linux/init.h> | |
15 | ||
1da177e4 LT |
16 | #include "sound_config.h" |
17 | ||
ece7f77b AB |
18 | struct audio_operations *audio_devs[MAX_AUDIO_DEV]; |
19 | EXPORT_SYMBOL(audio_devs); | |
20 | ||
21 | int num_audiodevs; | |
22 | EXPORT_SYMBOL(num_audiodevs); | |
23 | ||
24 | struct mixer_operations *mixer_devs[MAX_MIXER_DEV]; | |
25 | EXPORT_SYMBOL(mixer_devs); | |
26 | ||
27 | int num_mixers; | |
28 | EXPORT_SYMBOL(num_mixers); | |
29 | ||
30 | struct synth_operations *synth_devs[MAX_SYNTH_DEV+MAX_MIDI_DEV]; | |
31 | EXPORT_SYMBOL(synth_devs); | |
32 | ||
33 | int num_synths; | |
34 | ||
35 | struct midi_operations *midi_devs[MAX_MIDI_DEV]; | |
36 | EXPORT_SYMBOL(midi_devs); | |
37 | ||
38 | int num_midis; | |
39 | EXPORT_SYMBOL(num_midis); | |
40 | ||
41 | struct sound_timer_operations *sound_timer_devs[MAX_TIMER_DEV] = { | |
42 | &default_sound_timer, NULL | |
43 | }; | |
44 | EXPORT_SYMBOL(sound_timer_devs); | |
45 | ||
46 | int num_sound_timers = 1; | |
47 | ||
48 | ||
1da177e4 LT |
49 | static int sound_alloc_audiodev(void); |
50 | ||
51 | int sound_install_audiodrv(int vers, char *name, struct audio_driver *driver, | |
52 | int driver_size, int flags, unsigned int format_mask, | |
53 | void *devc, int dma1, int dma2) | |
54 | { | |
55 | struct audio_driver *d; | |
56 | struct audio_operations *op; | |
57 | int num; | |
58 | ||
59 | if (vers != AUDIO_DRIVER_VERSION || driver_size > sizeof(struct audio_driver)) { | |
60 | printk(KERN_ERR "Sound: Incompatible audio driver for %s\n", name); | |
61 | return -(EINVAL); | |
62 | } | |
63 | num = sound_alloc_audiodev(); | |
64 | ||
65 | if (num == -1) { | |
66 | printk(KERN_ERR "sound: Too many audio drivers\n"); | |
67 | return -(EBUSY); | |
68 | } | |
69 | d = (struct audio_driver *) (sound_mem_blocks[sound_nblocks] = vmalloc(sizeof(struct audio_driver))); | |
444c1953 DC |
70 | sound_nblocks++; |
71 | if (sound_nblocks >= MAX_MEM_BLOCKS) | |
72 | sound_nblocks = MAX_MEM_BLOCKS - 1; | |
1da177e4 LT |
73 | |
74 | op = (struct audio_operations *) (sound_mem_blocks[sound_nblocks] = vmalloc(sizeof(struct audio_operations))); | |
444c1953 DC |
75 | sound_nblocks++; |
76 | if (sound_nblocks >= MAX_MEM_BLOCKS) | |
77 | sound_nblocks = MAX_MEM_BLOCKS - 1; | |
1da177e4 | 78 | |
1da177e4 LT |
79 | if (d == NULL || op == NULL) { |
80 | printk(KERN_ERR "Sound: Can't allocate driver for (%s)\n", name); | |
81 | sound_unload_audiodev(num); | |
82 | return -(ENOMEM); | |
83 | } | |
84 | memset((char *) op, 0, sizeof(struct audio_operations)); | |
85 | init_waitqueue_head(&op->in_sleeper); | |
86 | init_waitqueue_head(&op->out_sleeper); | |
87 | init_waitqueue_head(&op->poll_sleeper); | |
88 | if (driver_size < sizeof(struct audio_driver)) | |
89 | memset((char *) d, 0, sizeof(struct audio_driver)); | |
90 | ||
91 | memcpy((char *) d, (char *) driver, driver_size); | |
92 | ||
93 | op->d = d; | |
94 | strlcpy(op->name, name, sizeof(op->name)); | |
95 | op->flags = flags; | |
96 | op->format_mask = format_mask; | |
97 | op->devc = devc; | |
98 | ||
99 | /* | |
100 | * Hardcoded defaults | |
101 | */ | |
102 | audio_devs[num] = op; | |
103 | ||
104 | DMAbuf_init(num, dma1, dma2); | |
105 | ||
106 | audio_init_devices(); | |
107 | return num; | |
108 | } | |
ece7f77b | 109 | EXPORT_SYMBOL(sound_install_audiodrv); |
1da177e4 LT |
110 | |
111 | int sound_install_mixer(int vers, char *name, struct mixer_operations *driver, | |
112 | int driver_size, void *devc) | |
113 | { | |
114 | struct mixer_operations *op; | |
115 | ||
116 | int n = sound_alloc_mixerdev(); | |
117 | ||
118 | if (n == -1) { | |
119 | printk(KERN_ERR "Sound: Too many mixer drivers\n"); | |
120 | return -EBUSY; | |
121 | } | |
122 | if (vers != MIXER_DRIVER_VERSION || | |
123 | driver_size > sizeof(struct mixer_operations)) { | |
124 | printk(KERN_ERR "Sound: Incompatible mixer driver for %s\n", name); | |
125 | return -EINVAL; | |
126 | } | |
127 | ||
128 | /* FIXME: This leaks a mixer_operations struct every time its called | |
129 | until you unload sound! */ | |
130 | ||
131 | op = (struct mixer_operations *) (sound_mem_blocks[sound_nblocks] = vmalloc(sizeof(struct mixer_operations))); | |
444c1953 DC |
132 | sound_nblocks++; |
133 | if (sound_nblocks >= MAX_MEM_BLOCKS) | |
134 | sound_nblocks = MAX_MEM_BLOCKS - 1; | |
1da177e4 | 135 | |
1da177e4 LT |
136 | if (op == NULL) { |
137 | printk(KERN_ERR "Sound: Can't allocate mixer driver for (%s)\n", name); | |
138 | return -ENOMEM; | |
139 | } | |
140 | memset((char *) op, 0, sizeof(struct mixer_operations)); | |
141 | memcpy((char *) op, (char *) driver, driver_size); | |
142 | ||
143 | strlcpy(op->name, name, sizeof(op->name)); | |
144 | op->devc = devc; | |
145 | ||
146 | mixer_devs[n] = op; | |
147 | return n; | |
148 | } | |
ece7f77b | 149 | EXPORT_SYMBOL(sound_install_mixer); |
1da177e4 LT |
150 | |
151 | void sound_unload_audiodev(int dev) | |
152 | { | |
153 | if (dev != -1) { | |
154 | DMAbuf_deinit(dev); | |
155 | audio_devs[dev] = NULL; | |
156 | unregister_sound_dsp((dev<<4)+3); | |
157 | } | |
158 | } | |
ece7f77b | 159 | EXPORT_SYMBOL(sound_unload_audiodev); |
1da177e4 LT |
160 | |
161 | static int sound_alloc_audiodev(void) | |
162 | { | |
163 | int i = register_sound_dsp(&oss_sound_fops, -1); | |
164 | if(i==-1) | |
165 | return i; | |
166 | i>>=4; | |
167 | if(i>=num_audiodevs) | |
168 | num_audiodevs = i + 1; | |
169 | return i; | |
170 | } | |
171 | ||
172 | int sound_alloc_mididev(void) | |
173 | { | |
174 | int i = register_sound_midi(&oss_sound_fops, -1); | |
175 | if(i==-1) | |
176 | return i; | |
177 | i>>=4; | |
178 | if(i>=num_midis) | |
179 | num_midis = i + 1; | |
180 | return i; | |
181 | } | |
ece7f77b | 182 | EXPORT_SYMBOL(sound_alloc_mididev); |
1da177e4 LT |
183 | |
184 | int sound_alloc_synthdev(void) | |
185 | { | |
186 | int i; | |
187 | ||
188 | for (i = 0; i < MAX_SYNTH_DEV; i++) { | |
189 | if (synth_devs[i] == NULL) { | |
190 | if (i >= num_synths) | |
191 | num_synths++; | |
192 | return i; | |
193 | } | |
194 | } | |
195 | return -1; | |
196 | } | |
ece7f77b | 197 | EXPORT_SYMBOL(sound_alloc_synthdev); |
1da177e4 LT |
198 | |
199 | int sound_alloc_mixerdev(void) | |
200 | { | |
201 | int i = register_sound_mixer(&oss_sound_fops, -1); | |
202 | if(i==-1) | |
203 | return -1; | |
204 | i>>=4; | |
205 | if(i>=num_mixers) | |
206 | num_mixers = i + 1; | |
207 | return i; | |
208 | } | |
ece7f77b | 209 | EXPORT_SYMBOL(sound_alloc_mixerdev); |
1da177e4 LT |
210 | |
211 | int sound_alloc_timerdev(void) | |
212 | { | |
213 | int i; | |
214 | ||
215 | for (i = 0; i < MAX_TIMER_DEV; i++) { | |
216 | if (sound_timer_devs[i] == NULL) { | |
217 | if (i >= num_sound_timers) | |
218 | num_sound_timers++; | |
219 | return i; | |
220 | } | |
221 | } | |
222 | return -1; | |
223 | } | |
ece7f77b | 224 | EXPORT_SYMBOL(sound_alloc_timerdev); |
1da177e4 LT |
225 | |
226 | void sound_unload_mixerdev(int dev) | |
227 | { | |
228 | if (dev != -1) { | |
229 | mixer_devs[dev] = NULL; | |
230 | unregister_sound_mixer(dev<<4); | |
231 | num_mixers--; | |
232 | } | |
233 | } | |
ece7f77b | 234 | EXPORT_SYMBOL(sound_unload_mixerdev); |
1da177e4 LT |
235 | |
236 | void sound_unload_mididev(int dev) | |
237 | { | |
238 | if (dev != -1) { | |
239 | midi_devs[dev] = NULL; | |
240 | unregister_sound_midi((dev<<4)+2); | |
241 | } | |
242 | } | |
ece7f77b | 243 | EXPORT_SYMBOL(sound_unload_mididev); |
1da177e4 LT |
244 | |
245 | void sound_unload_synthdev(int dev) | |
246 | { | |
247 | if (dev != -1) | |
248 | synth_devs[dev] = NULL; | |
249 | } | |
ece7f77b | 250 | EXPORT_SYMBOL(sound_unload_synthdev); |
1da177e4 LT |
251 | |
252 | void sound_unload_timerdev(int dev) | |
253 | { | |
254 | if (dev != -1) | |
255 | sound_timer_devs[dev] = NULL; | |
256 | } | |
ece7f77b AB |
257 | EXPORT_SYMBOL(sound_unload_timerdev); |
258 |