2 * Copyright (c) 2001 Cameron Grant <gandalf@vilnya.demon.co.uk>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * $FreeBSD: src/sys/dev/sound/pcm/sndstat.c,v 1.4.2.2 2002/04/22 15:49:36 cg Exp $
27 * $DragonFly: src/sys/dev/sound/pcm/sndstat.c,v 1.3 2003/06/23 17:55:34 dillon Exp $
30 #include <dev/sound/pcm/sound.h>
31 #include <dev/sound/pcm/vchan.h>
33 SND_DECLARE_FILE("$DragonFly: src/sys/dev/sound/pcm/sndstat.c,v 1.3 2003/06/23 17:55:34 dillon Exp $");
35 #define SS_TYPE_MODULE 0
36 #define SS_TYPE_FIRST 1
38 #define SS_TYPE_MIDI 2
39 #define SS_TYPE_SEQUENCER 3
40 #define SS_TYPE_LAST 3
42 static d_open_t sndstat_open;
43 static d_close_t sndstat_close;
44 static d_read_t sndstat_read;
46 static struct cdevsw sndstat_cdevsw = {
47 /* open */ sndstat_open,
48 /* close */ sndstat_close,
49 /* read */ sndstat_read,
54 /* strategy */ nostrategy,
56 /* maj */ SND_CDEV_MAJOR,
62 struct sndstat_entry {
63 SLIST_ENTRY(sndstat_entry) link;
66 sndstat_handler handler;
70 static struct sbuf sndstat_sbuf;
71 static dev_t sndstat_dev = 0;
72 static int sndstat_isopen = 0;
73 static int sndstat_bufptr;
74 static int sndstat_maxunit = -1;
75 static int sndstat_files = 0;
77 static SLIST_HEAD(, sndstat_entry) sndstat_devlist = SLIST_HEAD_INITIALIZER(none);
79 static int sndstat_verbose = 1;
81 TUNABLE_INT("hw.snd.verbose", &sndstat_verbose);
83 TUNABLE_INT_DECL("hw.snd.verbose", 1, sndstat_verbose);
86 static int sndstat_prepare(struct sbuf *s);
89 sysctl_hw_sndverbose(SYSCTL_HANDLER_ARGS)
94 verbose = sndstat_verbose;
95 error = sysctl_handle_int(oidp, &verbose, sizeof(verbose), req);
96 if (error == 0 && req->newptr != NULL) {
98 if (verbose < 0 || verbose > 3)
101 sndstat_verbose = verbose;
106 SYSCTL_PROC(_hw_snd, OID_AUTO, verbose, CTLTYPE_INT | CTLFLAG_RW,
107 0, sizeof(int), sysctl_hw_sndverbose, "I", "");
110 sndstat_open(dev_t i_dev, int flags, int mode, struct thread *td)
116 if (sndstat_isopen) {
120 if (sbuf_new(&sndstat_sbuf, NULL, 4096, 0) == NULL) {
125 err = (sndstat_prepare(&sndstat_sbuf) > 0)? 0 : ENOMEM;
134 sndstat_close(dev_t i_dev, int flags, int mode, struct thread *td)
139 if (!sndstat_isopen) {
143 sbuf_delete(&sndstat_sbuf);
151 sndstat_read(dev_t i_dev, struct uio *buf, int flag)
157 if (!sndstat_isopen) {
161 l = min(buf->uio_resid, sbuf_len(&sndstat_sbuf) - sndstat_bufptr);
162 err = (l > 0)? uiomove(sbuf_data(&sndstat_sbuf) + sndstat_bufptr, l, buf) : 0;
169 /************************************************************************/
171 static struct sndstat_entry *
172 sndstat_find(int type, int unit)
174 struct sndstat_entry *ent;
176 SLIST_FOREACH(ent, &sndstat_devlist, link) {
177 if (ent->type == type && ent->unit == unit)
185 sndstat_register(device_t dev, char *str, sndstat_handler handler)
188 struct sndstat_entry *ent;
193 unit = device_get_unit(dev);
194 devtype = device_get_name(dev);
195 if (!strcmp(devtype, "pcm"))
197 else if (!strcmp(devtype, "midi"))
199 else if (!strcmp(devtype, "sequencer"))
200 type = SS_TYPE_SEQUENCER;
204 type = SS_TYPE_MODULE;
208 ent = malloc(sizeof *ent, M_DEVBUF, M_ZERO | M_WAITOK);
216 ent->handler = handler;
219 SLIST_INSERT_HEAD(&sndstat_devlist, ent, link);
220 if (type == SS_TYPE_MODULE)
222 sndstat_maxunit = (unit > sndstat_maxunit)? unit : sndstat_maxunit;
229 sndstat_registerfile(char *str)
231 return sndstat_register(NULL, str, NULL);
235 sndstat_unregister(device_t dev)
238 struct sndstat_entry *ent;
241 SLIST_FOREACH(ent, &sndstat_devlist, link) {
242 if (ent->dev == dev) {
243 SLIST_REMOVE(&sndstat_devlist, ent, sndstat_entry, link);
256 sndstat_unregisterfile(char *str)
259 struct sndstat_entry *ent;
262 SLIST_FOREACH(ent, &sndstat_devlist, link) {
263 if (ent->dev == NULL && ent->str == str) {
264 SLIST_REMOVE(&sndstat_devlist, ent, sndstat_entry, link);
277 /************************************************************************/
280 sndstat_prepare(struct sbuf *s)
282 struct sndstat_entry *ent;
285 sbuf_printf(s, "FreeBSD Audio Driver (newpcm)\n");
286 if (SLIST_EMPTY(&sndstat_devlist)) {
287 sbuf_printf(s, "No devices installed.\n");
292 sbuf_printf(s, "Installed devices:\n");
294 for (i = 0; i <= sndstat_maxunit; i++) {
295 for (j = SS_TYPE_FIRST; j <= SS_TYPE_LAST; j++) {
296 ent = sndstat_find(j, i);
299 sbuf_printf(s, "%s:", device_get_nameunit(ent->dev));
300 sbuf_printf(s, " <%s>", device_get_desc(ent->dev));
301 sbuf_printf(s, " %s", ent->str);
303 ent->handler(s, ent->dev, sndstat_verbose);
305 sbuf_printf(s, " [no handler]");
306 sbuf_printf(s, "\n");
310 if (sndstat_verbose >= 3 && sndstat_files > 0) {
311 sbuf_printf(s, "\nFile Versions:\n");
313 SLIST_FOREACH(ent, &sndstat_devlist, link) {
314 if (ent->dev == NULL && ent->str != NULL)
315 sbuf_printf(s, "%s\n", ent->str);
326 sndstat_dev = make_dev(&sndstat_cdevsw, SND_DEV_STATUS, UID_ROOT, GID_WHEEL, 0444, "sndstat");
328 return (sndstat_dev != 0)? 0 : ENXIO;
337 if (sndstat_isopen) {
343 destroy_dev(sndstat_dev);
353 return (sndstat_isopen);
357 sndstat_sysinit(void *p)
363 sndstat_sysuninit(void *p)
368 SYSINIT(sndstat_sysinit, SI_SUB_DRIVERS, SI_ORDER_FIRST, sndstat_sysinit, NULL);
369 SYSUNINIT(sndstat_sysuninit, SI_SUB_DRIVERS, SI_ORDER_FIRST, sndstat_sysuninit, NULL);