Annotation of src/usr.bin/sndiod/dev_sioctl.c, Revision 1.7
1.7 ! ratchov 1: /* $OpenBSD: dev_sioctl.c,v 1.6 2020/06/28 05:21:39 ratchov Exp $ */
1.1 ratchov 2: /*
3: * Copyright (c) 2014-2020 Alexandre Ratchov <alex@caoua.org>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: */
17: #include <sys/time.h>
18: #include <sys/types.h>
19:
20: #include <poll.h>
21: #include <sndio.h>
22: #include <stdio.h>
23: #include <stdlib.h>
24: #include <string.h>
25: #include "abuf.h"
26: #include "defs.h"
27: #include "dev.h"
28: #include "dsp.h"
29: #include "file.h"
30: #include "dev_sioctl.h"
31: #include "utils.h"
32:
33: void dev_sioctl_ondesc(void *, struct sioctl_desc *, int);
34: void dev_sioctl_onval(void *, unsigned int, unsigned int);
35: int dev_sioctl_pollfd(void *, struct pollfd *);
36: int dev_sioctl_revents(void *, struct pollfd *);
37: void dev_sioctl_in(void *);
38: void dev_sioctl_out(void *);
39: void dev_sioctl_hup(void *);
40:
41: struct fileops dev_sioctl_ops = {
42: "sioctl",
43: dev_sioctl_pollfd,
44: dev_sioctl_revents,
45: dev_sioctl_in,
46: dev_sioctl_out,
47: dev_sioctl_hup
48: };
49:
50: void
51: dev_sioctl_ondesc(void *arg, struct sioctl_desc *desc, int val)
52: {
53: struct dev *d = arg;
1.7 ! ratchov 54: char *group, group_buf[CTL_NAMEMAX];
1.1 ratchov 55:
1.2 ratchov 56: if (desc == NULL) {
57: dev_ctlsync(d);
1.1 ratchov 58: return;
1.2 ratchov 59: }
60:
1.7 ! ratchov 61: ctl_del(CTL_HW, d, &desc->addr);
1.1 ratchov 62:
1.7 ! ratchov 63: if (desc->group[0] == 0)
! 64: group = d->name;
! 65: else {
! 66: if (snprintf(group_buf, CTL_NAMEMAX, "%s/%s",
! 67: d->name, desc->group) >= CTL_NAMEMAX)
! 68: return;
1.1 ratchov 69: group = group_buf;
1.7 ! ratchov 70: }
1.1 ratchov 71:
1.7 ! ratchov 72: ctl_new(CTL_HW, d, &desc->addr,
! 73: desc->type, group,
1.1 ratchov 74: desc->node0.name, desc->node0.unit, desc->func,
75: desc->node1.name, desc->node1.unit, desc->maxval, val);
76: }
77:
78: void
79: dev_sioctl_onval(void *arg, unsigned int addr, unsigned int val)
80: {
81: struct dev *d = arg;
82: struct ctl *c;
83:
84: dev_log(d);
85: log_puts(": onctl: addr = ");
86: log_putu(addr);
87: log_puts(", val = ");
88: log_putu(val);
89: log_puts("\n");
90:
1.7 ! ratchov 91: for (c = ctl_list; c != NULL; c = c->next) {
! 92: if (c->scope != CTL_HW || c->u.hw.addr != addr)
1.1 ratchov 93: continue;
94: ctl_log(c);
95: log_puts(": new value -> ");
96: log_putu(val);
97: log_puts("\n");
98: c->val_mask = ~0U;
99: c->curval = val;
100: }
101: }
102:
103: /*
104: * open the control device.
105: */
106: void
107: dev_sioctl_open(struct dev *d)
108: {
1.3 ratchov 109: if (d->sioctl.hdl == NULL) {
110: /*
111: * At this point there are clients, for instance if we're
112: * called by dev_reopen() but the control device couldn't
113: * be opened. In this case controls have changed (thoseof
114: * old device are just removed) so we need to notify clients.
115: */
116: dev_ctlsync(d);
1.1 ratchov 117: return;
1.3 ratchov 118: }
1.1 ratchov 119: sioctl_ondesc(d->sioctl.hdl, dev_sioctl_ondesc, d);
120: sioctl_onval(d->sioctl.hdl, dev_sioctl_onval, d);
121: }
122:
123: /*
124: * close the control device.
125: */
126: void
127: dev_sioctl_close(struct dev *d)
128: {
1.5 ratchov 129: struct ctl *c, **pc;
130:
131: /* remove controls */
1.7 ! ratchov 132: pc = &ctl_list;
1.5 ratchov 133: while ((c = *pc) != NULL) {
1.7 ! ratchov 134: if (c->scope == CTL_HW && c->u.hw.dev == d) {
1.5 ratchov 135: c->refs_mask &= ~CTL_DEVMASK;
136: if (c->refs_mask == 0) {
137: *pc = c->next;
138: xfree(c);
139: continue;
140: }
141: c->type = CTL_NONE;
142: c->desc_mask = ~0;
143: }
144: pc = &c->next;
145: }
146: dev_ctlsync(d);
1.1 ratchov 147: }
148:
149: int
150: dev_sioctl_pollfd(void *arg, struct pollfd *pfd)
151: {
152: struct dev *d = arg;
153: struct ctl *c;
154: int events = 0;
155:
1.7 ! ratchov 156: for (c = ctl_list; c != NULL; c = c->next) {
! 157: if (c->scope == CTL_HW && c->u.hw.dev == d && c->dirty)
1.1 ratchov 158: events |= POLLOUT;
159: }
160: return sioctl_pollfd(d->sioctl.hdl, pfd, events);
161: }
162:
163: int
164: dev_sioctl_revents(void *arg, struct pollfd *pfd)
165: {
166: struct dev *d = arg;
167:
168: return sioctl_revents(d->sioctl.hdl, pfd);
169: }
170:
171: void
172: dev_sioctl_in(void *arg)
173: {
174: }
175:
176: void
177: dev_sioctl_out(void *arg)
178: {
179: struct dev *d = arg;
180: struct ctl *c;
181: int cnt;
182:
183: /*
184: * for each dirty ctl, call sioctl_setval() and dev_unref(). As
185: * dev_unref() may destroy the ctl_list, we must call it after
186: * we've finished iterating on it.
187: */
188: cnt = 0;
1.7 ! ratchov 189: for (c = ctl_list; c != NULL; c = c->next) {
! 190: if (c->scope != CTL_HW || c->u.hw.dev != d || !c->dirty)
1.1 ratchov 191: continue;
1.7 ! ratchov 192: if (!sioctl_setval(d->sioctl.hdl, c->u.hw.addr, c->curval)) {
1.1 ratchov 193: ctl_log(c);
194: log_puts(": set failed\n");
195: break;
196: }
197: if (log_level >= 2) {
198: ctl_log(c);
199: log_puts(": changed\n");
200: }
201: c->dirty = 0;
202: cnt++;
203: }
204: while (cnt-- > 0)
205: dev_unref(d);
206: }
207:
208: void
209: dev_sioctl_hup(void *arg)
210: {
211: struct dev *d = arg;
212:
213: dev_sioctl_close(d);
1.5 ratchov 214: file_del(d->sioctl.file);
215: sioctl_close(d->sioctl.hdl);
216: d->sioctl.hdl = NULL;
1.1 ratchov 217: }
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