Remove some duplicate FreeBSD CVS IDs, move some IDs to better places.
[dragonfly.git] / sys / dev / sound / pcm / sndstat.c
CommitLineData
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1/*
2 * Copyright (c) 2001 Cameron Grant <gandalf@vilnya.demon.co.uk>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
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25 *
26 * $FreeBSD: src/sys/dev/sound/pcm/sndstat.c,v 1.4.2.2 2002/04/22 15:49:36 cg Exp $
77934f9e 27 * $DragonFly: src/sys/dev/sound/pcm/sndstat.c,v 1.7 2004/05/21 01:14:27 dillon Exp $
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28 */
29
30#include <dev/sound/pcm/sound.h>
31#include <dev/sound/pcm/vchan.h>
32
77934f9e 33SND_DECLARE_FILE("$DragonFly: src/sys/dev/sound/pcm/sndstat.c,v 1.7 2004/05/21 01:14:27 dillon Exp $");
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34
35#define SS_TYPE_MODULE 0
36#define SS_TYPE_FIRST 1
37#define SS_TYPE_PCM 1
38#define SS_TYPE_MIDI 2
39#define SS_TYPE_SEQUENCER 3
40#define SS_TYPE_LAST 3
41
42static d_open_t sndstat_open;
43static d_close_t sndstat_close;
44static d_read_t sndstat_read;
45
46static struct cdevsw sndstat_cdevsw = {
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47 /* name */ "sndstat",
48 /* maj */ SND_CDEV_MAJOR,
49 /* flags */ 0,
50 /* port */ NULL,
455fcd7e 51 /* clone */ NULL,
fabb8ceb 52
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53 /* open */ sndstat_open,
54 /* close */ sndstat_close,
55 /* read */ sndstat_read,
56 /* write */ nowrite,
57 /* ioctl */ noioctl,
58 /* poll */ nopoll,
59 /* mmap */ nommap,
60 /* strategy */ nostrategy,
984263bc 61 /* dump */ nodump,
fabb8ceb 62 /* psize */ nopsize
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63};
64
65struct sndstat_entry {
66 SLIST_ENTRY(sndstat_entry) link;
67 device_t dev;
68 char *str;
69 sndstat_handler handler;
70 int type, unit;
71};
72
73static struct sbuf sndstat_sbuf;
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74static int sndstat_isopen = 0;
75static int sndstat_bufptr;
76static int sndstat_maxunit = -1;
77static int sndstat_files = 0;
78
79static SLIST_HEAD(, sndstat_entry) sndstat_devlist = SLIST_HEAD_INITIALIZER(none);
80
81static int sndstat_verbose = 1;
82#ifdef USING_MUTEX
83TUNABLE_INT("hw.snd.verbose", &sndstat_verbose);
84#else
85TUNABLE_INT_DECL("hw.snd.verbose", 1, sndstat_verbose);
86#endif
87
88static int sndstat_prepare(struct sbuf *s);
89
90static int
91sysctl_hw_sndverbose(SYSCTL_HANDLER_ARGS)
92{
93 intrmask_t s;
94 int error, verbose;
95
96 verbose = sndstat_verbose;
97 error = sysctl_handle_int(oidp, &verbose, sizeof(verbose), req);
98 if (error == 0 && req->newptr != NULL) {
99 s = spltty();
100 if (verbose < 0 || verbose > 3)
101 error = EINVAL;
102 else
103 sndstat_verbose = verbose;
104 splx(s);
105 }
106 return error;
107}
108SYSCTL_PROC(_hw_snd, OID_AUTO, verbose, CTLTYPE_INT | CTLFLAG_RW,
109 0, sizeof(int), sysctl_hw_sndverbose, "I", "");
110
111static int
41c20dac 112sndstat_open(dev_t i_dev, int flags, int mode, struct thread *td)
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113{
114 intrmask_t s;
115 int err;
116
117 s = spltty();
118 if (sndstat_isopen) {
119 splx(s);
120 return EBUSY;
121 }
122 if (sbuf_new(&sndstat_sbuf, NULL, 4096, 0) == NULL) {
123 splx(s);
124 return ENXIO;
125 }
126 sndstat_bufptr = 0;
127 err = (sndstat_prepare(&sndstat_sbuf) > 0)? 0 : ENOMEM;
128 if (!err)
129 sndstat_isopen = 1;
130
131 splx(s);
132 return err;
133}
134
135static int
41c20dac 136sndstat_close(dev_t i_dev, int flags, int mode, struct thread *td)
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137{
138 intrmask_t s;
139
140 s = spltty();
141 if (!sndstat_isopen) {
142 splx(s);
143 return EBADF;
144 }
145 sbuf_delete(&sndstat_sbuf);
146 sndstat_isopen = 0;
147
148 splx(s);
149 return 0;
150}
151
152static int
153sndstat_read(dev_t i_dev, struct uio *buf, int flag)
154{
155 intrmask_t s;
156 int l, err;
157
158 s = spltty();
159 if (!sndstat_isopen) {
160 splx(s);
161 return EBADF;
162 }
163 l = min(buf->uio_resid, sbuf_len(&sndstat_sbuf) - sndstat_bufptr);
164 err = (l > 0)? uiomove(sbuf_data(&sndstat_sbuf) + sndstat_bufptr, l, buf) : 0;
165 sndstat_bufptr += l;
166
167 splx(s);
168 return err;
169}
170
171/************************************************************************/
172
173static struct sndstat_entry *
174sndstat_find(int type, int unit)
175{
176 struct sndstat_entry *ent;
177
178 SLIST_FOREACH(ent, &sndstat_devlist, link) {
179 if (ent->type == type && ent->unit == unit)
180 return ent;
181 }
182
183 return NULL;
184}
185
186int
187sndstat_register(device_t dev, char *str, sndstat_handler handler)
188{
189 intrmask_t s;
190 struct sndstat_entry *ent;
191 const char *devtype;
192 int type, unit;
193
194 if (dev) {
195 unit = device_get_unit(dev);
196 devtype = device_get_name(dev);
197 if (!strcmp(devtype, "pcm"))
198 type = SS_TYPE_PCM;
199 else if (!strcmp(devtype, "midi"))
200 type = SS_TYPE_MIDI;
201 else if (!strcmp(devtype, "sequencer"))
202 type = SS_TYPE_SEQUENCER;
203 else
204 return EINVAL;
205 } else {
206 type = SS_TYPE_MODULE;
207 unit = -1;
208 }
209
210 ent = malloc(sizeof *ent, M_DEVBUF, M_ZERO | M_WAITOK);
211 if (!ent)
212 return ENOSPC;
213
214 ent->dev = dev;
215 ent->str = str;
216 ent->type = type;
217 ent->unit = unit;
218 ent->handler = handler;
219
220 s = spltty();
221 SLIST_INSERT_HEAD(&sndstat_devlist, ent, link);
222 if (type == SS_TYPE_MODULE)
223 sndstat_files++;
224 sndstat_maxunit = (unit > sndstat_maxunit)? unit : sndstat_maxunit;
225 splx(s);
226
227 return 0;
228}
229
230int
231sndstat_registerfile(char *str)
232{
233 return sndstat_register(NULL, str, NULL);
234}
235
236int
237sndstat_unregister(device_t dev)
238{
239 intrmask_t s;
240 struct sndstat_entry *ent;
241
242 s = spltty();
243 SLIST_FOREACH(ent, &sndstat_devlist, link) {
244 if (ent->dev == dev) {
245 SLIST_REMOVE(&sndstat_devlist, ent, sndstat_entry, link);
246 free(ent, M_DEVBUF);
247 splx(s);
248
249 return 0;
250 }
251 }
252 splx(s);
253
254 return ENXIO;
255}
256
257int
258sndstat_unregisterfile(char *str)
259{
260 intrmask_t s;
261 struct sndstat_entry *ent;
262
263 s = spltty();
264 SLIST_FOREACH(ent, &sndstat_devlist, link) {
265 if (ent->dev == NULL && ent->str == str) {
266 SLIST_REMOVE(&sndstat_devlist, ent, sndstat_entry, link);
267 free(ent, M_DEVBUF);
268 sndstat_files--;
269 splx(s);
270
271 return 0;
272 }
273 }
274 splx(s);
275
276 return ENXIO;
277}
278
279/************************************************************************/
280
281static int
282sndstat_prepare(struct sbuf *s)
283{
284 struct sndstat_entry *ent;
285 int i, j;
286
287 sbuf_printf(s, "FreeBSD Audio Driver (newpcm)\n");
288 if (SLIST_EMPTY(&sndstat_devlist)) {
289 sbuf_printf(s, "No devices installed.\n");
290 sbuf_finish(s);
291 return sbuf_len(s);
292 }
293
294 sbuf_printf(s, "Installed devices:\n");
295
296 for (i = 0; i <= sndstat_maxunit; i++) {
297 for (j = SS_TYPE_FIRST; j <= SS_TYPE_LAST; j++) {
298 ent = sndstat_find(j, i);
299 if (!ent)
300 continue;
301 sbuf_printf(s, "%s:", device_get_nameunit(ent->dev));
302 sbuf_printf(s, " <%s>", device_get_desc(ent->dev));
303 sbuf_printf(s, " %s", ent->str);
304 if (ent->handler)
305 ent->handler(s, ent->dev, sndstat_verbose);
306 else
307 sbuf_printf(s, " [no handler]");
308 sbuf_printf(s, "\n");
309 }
310 }
311
312 if (sndstat_verbose >= 3 && sndstat_files > 0) {
313 sbuf_printf(s, "\nFile Versions:\n");
314
315 SLIST_FOREACH(ent, &sndstat_devlist, link) {
316 if (ent->dev == NULL && ent->str != NULL)
317 sbuf_printf(s, "%s\n", ent->str);
318 }
319 }
320
321 sbuf_finish(s);
322 return sbuf_len(s);
323}
324
325static int
326sndstat_init(void)
327{
77934f9e 328 cdevsw_add(&sndstat_cdevsw, -1, SND_DEV_STATUS);
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329 make_dev(&sndstat_cdevsw, SND_DEV_STATUS,
330 UID_ROOT, GID_WHEEL, 0444, "sndstat");
331 return (0);
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332}
333
334static int
335sndstat_uninit(void)
336{
337 intrmask_t s;
338
339 s = spltty();
340 if (sndstat_isopen) {
341 splx(s);
342 return EBUSY;
343 }
77934f9e 344 cdevsw_remove(&sndstat_cdevsw, -1, SND_DEV_STATUS);
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345 splx(s);
346 return 0;
347}
348
349int
350sndstat_busy(void)
351{
352 return (sndstat_isopen);
353}
354
355static void
356sndstat_sysinit(void *p)
357{
358 sndstat_init();
359}
360
361static void
362sndstat_sysuninit(void *p)
363{
364 sndstat_uninit();
365}
366
367SYSINIT(sndstat_sysinit, SI_SUB_DRIVERS, SI_ORDER_FIRST, sndstat_sysinit, NULL);
368SYSUNINIT(sndstat_sysuninit, SI_SUB_DRIVERS, SI_ORDER_FIRST, sndstat_sysuninit, NULL);
369
370