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 1.10 2006/09/05 00:55:43 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 1.10 2006/09/05 00:55:43 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 dev_ops sndstat_ops = {
47 { "sndstat", SND_CDEV_MAJOR, 0 },
48 .d_open = sndstat_open,
49 .d_close = sndstat_close,
50 .d_read = sndstat_read,
53 struct sndstat_entry {
54 SLIST_ENTRY(sndstat_entry) link;
57 sndstat_handler handler;
61 static struct sbuf sndstat_sbuf;
62 static int sndstat_isopen = 0;
63 static int sndstat_bufptr;
64 static int sndstat_maxunit = -1;
65 static int sndstat_files = 0;
67 static SLIST_HEAD(, sndstat_entry) sndstat_devlist = SLIST_HEAD_INITIALIZER(none);
69 static int sndstat_verbose = 1;
71 TUNABLE_INT("hw.snd.verbose", &sndstat_verbose);
73 TUNABLE_INT_DECL("hw.snd.verbose", 1, sndstat_verbose);
76 static int sndstat_prepare(struct sbuf *s);
79 sysctl_hw_sndverbose(SYSCTL_HANDLER_ARGS)
83 verbose = sndstat_verbose;
84 error = sysctl_handle_int(oidp, &verbose, sizeof(verbose), req);
85 if (error == 0 && req->newptr != NULL) {
87 if (verbose < 0 || verbose > 3)
90 sndstat_verbose = verbose;
95 SYSCTL_PROC(_hw_snd, OID_AUTO, verbose, CTLTYPE_INT | CTLFLAG_RW,
96 0, sizeof(int), sysctl_hw_sndverbose, "I", "");
99 sndstat_open(struct dev_open_args *ap)
104 if (sndstat_isopen) {
108 if (sbuf_new(&sndstat_sbuf, NULL, 4096, 0) == NULL) {
113 err = (sndstat_prepare(&sndstat_sbuf) > 0)? 0 : ENOMEM;
122 sndstat_close(struct dev_close_args *ap)
125 if (!sndstat_isopen) {
129 sbuf_delete(&sndstat_sbuf);
137 sndstat_read(struct dev_read_args *ap)
139 struct uio *uio = ap->a_uio;
143 if (!sndstat_isopen) {
147 l = min(uio->uio_resid, sbuf_len(&sndstat_sbuf) - sndstat_bufptr);
149 err = uiomove(sbuf_data(&sndstat_sbuf) + sndstat_bufptr, l, uio);
158 /************************************************************************/
160 static struct sndstat_entry *
161 sndstat_find(int type, int unit)
163 struct sndstat_entry *ent;
165 SLIST_FOREACH(ent, &sndstat_devlist, link) {
166 if (ent->type == type && ent->unit == unit)
174 sndstat_register(device_t dev, char *str, sndstat_handler handler)
176 struct sndstat_entry *ent;
181 unit = device_get_unit(dev);
182 devtype = device_get_name(dev);
183 if (!strcmp(devtype, "pcm"))
185 else if (!strcmp(devtype, "midi"))
187 else if (!strcmp(devtype, "sequencer"))
188 type = SS_TYPE_SEQUENCER;
192 type = SS_TYPE_MODULE;
196 ent = kmalloc(sizeof *ent, M_DEVBUF, M_ZERO | M_WAITOK);
204 ent->handler = handler;
207 SLIST_INSERT_HEAD(&sndstat_devlist, ent, link);
208 if (type == SS_TYPE_MODULE)
210 sndstat_maxunit = (unit > sndstat_maxunit)? unit : sndstat_maxunit;
217 sndstat_registerfile(char *str)
219 return sndstat_register(NULL, str, NULL);
223 sndstat_unregister(device_t dev)
225 struct sndstat_entry *ent;
228 SLIST_FOREACH(ent, &sndstat_devlist, link) {
229 if (ent->dev == dev) {
230 SLIST_REMOVE(&sndstat_devlist, ent, sndstat_entry, link);
231 kfree(ent, M_DEVBUF);
243 sndstat_unregisterfile(char *str)
245 struct sndstat_entry *ent;
248 SLIST_FOREACH(ent, &sndstat_devlist, link) {
249 if (ent->dev == NULL && ent->str == str) {
250 SLIST_REMOVE(&sndstat_devlist, ent, sndstat_entry, link);
251 kfree(ent, M_DEVBUF);
263 /************************************************************************/
266 sndstat_prepare(struct sbuf *s)
268 struct sndstat_entry *ent;
271 sbuf_printf(s, "FreeBSD Audio Driver (newpcm)\n");
272 if (SLIST_EMPTY(&sndstat_devlist)) {
273 sbuf_printf(s, "No devices installed.\n");
278 sbuf_printf(s, "Installed devices:\n");
280 for (i = 0; i <= sndstat_maxunit; i++) {
281 for (j = SS_TYPE_FIRST; j <= SS_TYPE_LAST; j++) {
282 ent = sndstat_find(j, i);
285 sbuf_printf(s, "%s:", device_get_nameunit(ent->dev));
286 sbuf_printf(s, " <%s>", device_get_desc(ent->dev));
287 sbuf_printf(s, " %s", ent->str);
289 ent->handler(s, ent->dev, sndstat_verbose);
291 sbuf_printf(s, " [no handler]");
292 sbuf_printf(s, "\n");
296 if (sndstat_verbose >= 3 && sndstat_files > 0) {
297 sbuf_printf(s, "\nFile Versions:\n");
299 SLIST_FOREACH(ent, &sndstat_devlist, link) {
300 if (ent->dev == NULL && ent->str != NULL)
301 sbuf_printf(s, "%s\n", ent->str);
312 dev_ops_add(&sndstat_ops, -1, SND_DEV_STATUS);
313 make_dev(&sndstat_ops, SND_DEV_STATUS,
314 UID_ROOT, GID_WHEEL, 0444, "sndstat");
322 if (sndstat_isopen) {
326 dev_ops_remove(&sndstat_ops, -1, SND_DEV_STATUS);
334 return (sndstat_isopen);
338 sndstat_sysinit(void *p)
344 sndstat_sysuninit(void *p)
349 SYSINIT(sndstat_sysinit, SI_SUB_DRIVERS, SI_ORDER_FIRST, sndstat_sysinit, NULL);
350 SYSUNINIT(sndstat_sysuninit, SI_SUB_DRIVERS, SI_ORDER_FIRST, sndstat_sysuninit, NULL);