1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/* $OpenBSD: dev_sioctl.c,v 1.10 2024/05/24 15:16:09 ratchov Exp $ */
/*
* Copyright (c) 2014-2020 Alexandre Ratchov <alex@caoua.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/time.h>
#include <sys/types.h>
#include <poll.h>
#include <sndio.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "abuf.h"
#include "defs.h"
#include "dev.h"
#include "dsp.h"
#include "file.h"
#include "dev_sioctl.h"
#include "utils.h"
void dev_sioctl_ondesc(void *, struct sioctl_desc *, int);
void dev_sioctl_onval(void *, unsigned int, unsigned int);
int dev_sioctl_pollfd(void *, struct pollfd *);
int dev_sioctl_revents(void *, struct pollfd *);
void dev_sioctl_in(void *);
void dev_sioctl_out(void *);
void dev_sioctl_hup(void *);
struct fileops dev_sioctl_ops = {
"sioctl",
dev_sioctl_pollfd,
dev_sioctl_revents,
dev_sioctl_in,
dev_sioctl_out,
dev_sioctl_hup
};
void
dev_sioctl_ondesc(void *arg, struct sioctl_desc *desc, int val)
{
struct dev *d = arg;
char *group, group_buf[CTL_NAMEMAX];
if (desc == NULL) {
dev_ctlsync(d);
return;
}
ctl_del(CTL_HW, d, &desc->addr);
if (desc->group[0] == 0)
group = d->name;
else {
if (snprintf(group_buf, CTL_NAMEMAX, "%s/%s",
d->name, desc->group) >= CTL_NAMEMAX)
return;
group = group_buf;
}
ctl_new(CTL_HW, d, &desc->addr,
desc->type, desc->display, group,
desc->node0.name, desc->node0.unit, desc->func,
desc->node1.name, desc->node1.unit, desc->maxval, val);
}
void
dev_sioctl_onval(void *arg, unsigned int addr, unsigned int val)
{
struct dev *d = arg;
struct ctl *c;
if (log_level >= 2) {
dev_log(d);
log_puts(": onctl: addr = ");
log_putu(addr);
log_puts(", val = ");
log_putu(val);
log_puts("\n");
}
for (c = ctl_list; c != NULL; c = c->next) {
if (c->scope != CTL_HW || c->u.hw.dev != d ||
c->u.hw.addr != addr)
continue;
if (log_level >= 2) {
ctl_log(c);
log_puts(": new value -> ");
log_putu(val);
log_puts("\n");
}
c->val_mask = ~0U;
c->curval = val;
}
}
/*
* open the control device.
*/
void
dev_sioctl_open(struct dev *d)
{
if (d->sioctl.hdl == NULL) {
/*
* At this point there are clients, for instance if we're
* called by dev_reopen() but the control device couldn't
* be opened. In this case controls have changed (thoseof
* old device are just removed) so we need to notify clients.
*/
dev_ctlsync(d);
return;
}
sioctl_ondesc(d->sioctl.hdl, dev_sioctl_ondesc, d);
sioctl_onval(d->sioctl.hdl, dev_sioctl_onval, d);
}
/*
* close the control device.
*/
void
dev_sioctl_close(struct dev *d)
{
struct ctl *c, **pc;
/* remove controls */
pc = &ctl_list;
while ((c = *pc) != NULL) {
if (c->scope == CTL_HW && c->u.hw.dev == d) {
c->refs_mask &= ~CTL_DEVMASK;
if (c->refs_mask == 0) {
*pc = c->next;
xfree(c);
continue;
}
c->type = CTL_NONE;
c->desc_mask = ~0;
}
pc = &c->next;
}
dev_ctlsync(d);
}
int
dev_sioctl_pollfd(void *arg, struct pollfd *pfd)
{
struct dev *d = arg;
struct ctl *c;
int events = 0;
for (c = ctl_list; c != NULL; c = c->next) {
if (c->scope == CTL_HW && c->u.hw.dev == d && c->dirty)
events |= POLLOUT;
}
return sioctl_pollfd(d->sioctl.hdl, pfd, events);
}
int
dev_sioctl_revents(void *arg, struct pollfd *pfd)
{
struct dev *d = arg;
return sioctl_revents(d->sioctl.hdl, pfd);
}
void
dev_sioctl_in(void *arg)
{
}
void
dev_sioctl_out(void *arg)
{
struct dev *d = arg;
struct ctl *c;
int cnt;
/*
* for each dirty ctl, call sioctl_setval() and dev_unref(). As
* dev_unref() may destroy the ctl_list, we must call it after
* we've finished iterating on it.
*/
cnt = 0;
for (c = ctl_list; c != NULL; c = c->next) {
if (c->scope != CTL_HW || c->u.hw.dev != d || !c->dirty)
continue;
if (!sioctl_setval(d->sioctl.hdl, c->u.hw.addr, c->curval)) {
ctl_log(c);
log_puts(": set failed\n");
break;
}
if (log_level >= 2) {
ctl_log(c);
log_puts(": changed\n");
}
c->dirty = 0;
cnt++;
}
while (cnt-- > 0)
dev_unref(d);
}
void
dev_sioctl_hup(void *arg)
{
struct dev *d = arg;
dev_sioctl_close(d);
file_del(d->sioctl.file);
sioctl_close(d->sioctl.hdl);
d->sioctl.hdl = NULL;
}
|
