FreeBSD/Linux Kernel Cross Reference
sys/dev/radio.c
1 /* $NetBSD: radio.c,v 1.12 2003/10/19 01:44:48 simonb Exp $ */
2 /* $OpenBSD: radio.c,v 1.2 2001/12/05 10:27:06 mickey Exp $ */
3 /* $RuOBSD: radio.c,v 1.7 2001/12/04 06:03:05 tm Exp $ */
4
5 /*
6 * Copyright (c) 2001 Maxim Tsyplakov <tm@oganer.net>
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
27 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 /* This is the /dev/radio driver from OpenBSD */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: radio.c,v 1.12 2003/10/19 01:44:48 simonb Exp $");
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/proc.h>
38 #include <sys/errno.h>
39 #include <sys/ioctl.h>
40 #include <sys/device.h>
41 #include <sys/vnode.h>
42 #include <sys/radioio.h>
43 #include <sys/conf.h>
44
45 #include <dev/radio_if.h>
46 #include <dev/radiovar.h>
47
48 int radioprobe(struct device *, struct cfdata *, void *);
49 void radioattach(struct device *, struct device *, void *);
50 int radioprint(void *, const char *);
51 int radiodetach(struct device *, int);
52 int radioactivate(struct device *, enum devact);
53
54 CFATTACH_DECL(radio, sizeof(struct radio_softc),
55 radioprobe, radioattach, radiodetach, radioactivate);
56
57 dev_type_open(radioopen);
58 dev_type_close(radioclose);
59 dev_type_ioctl(radioioctl);
60
61 const struct cdevsw radio_cdevsw = {
62 radioopen, radioclose, noread, nowrite, radioioctl,
63 nostop, notty, nopoll, nommap, nokqfilter,
64 };
65
66 extern struct cfdriver radio_cd;
67
68 int
69 radioprobe(struct device *parent, struct cfdata *match, void *aux)
70 {
71 return (1);
72 }
73
74 void
75 radioattach(struct device *parent, struct device *self, void *aux)
76 {
77 struct radio_softc *sc = (void *)self;
78 struct radio_attach_args *sa = aux;
79 struct radio_hw_if *hwp = sa->hwif;
80 void *hdlp = sa->hdl;
81
82 printf("\n");
83 sc->hw_if = hwp;
84 sc->hw_hdl = hdlp;
85 sc->sc_dev = parent;
86 }
87
88 int
89 radioopen(dev_t dev, int flags, int fmt, struct proc *p)
90 {
91 int unit;
92 struct radio_softc *sc;
93
94 unit = RADIOUNIT(dev);
95 if (unit >= radio_cd.cd_ndevs ||
96 (sc = radio_cd.cd_devs[unit]) == NULL ||
97 sc->hw_if == NULL)
98 return (ENXIO);
99
100 if (sc->hw_if->open != NULL)
101 return (sc->hw_if->open(sc->hw_hdl, flags, fmt, p));
102 else
103 return (0);
104 }
105
106 int
107 radioclose(dev_t dev, int flags, int fmt, struct proc *p)
108 {
109 struct radio_softc *sc;
110
111 sc = radio_cd.cd_devs[RADIOUNIT(dev)];
112
113 if (sc->hw_if->close != NULL)
114 return (sc->hw_if->close(sc->hw_hdl, flags, fmt, p));
115 else
116 return (0);
117 }
118
119 int
120 radioioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p)
121 {
122 struct radio_softc *sc;
123 int unit, error;
124
125 unit = RADIOUNIT(dev);
126 if (unit >= radio_cd.cd_ndevs ||
127 (sc = radio_cd.cd_devs[unit]) == NULL || sc->hw_if == NULL)
128 return (ENXIO);
129
130 error = EOPNOTSUPP;
131 switch (cmd) {
132 case RIOCGINFO:
133 if (sc->hw_if->get_info)
134 error = (sc->hw_if->get_info)(sc->hw_hdl,
135 (struct radio_info *)data);
136 break;
137 case RIOCSINFO:
138 if (sc->hw_if->set_info)
139 error = (sc->hw_if->set_info)(sc->hw_hdl,
140 (struct radio_info *)data);
141 break;
142 case RIOCSSRCH:
143 if (sc->hw_if->search)
144 error = (sc->hw_if->search)(sc->hw_hdl,
145 *(int *)data);
146 break;
147 default:
148 error = EINVAL;
149 }
150
151 return (error);
152 }
153
154 /*
155 * Called from hardware driver. This is where the MI radio driver gets
156 * probed/attached to the hardware driver
157 */
158 struct device *
159 radio_attach_mi(struct radio_hw_if *rhwp, void *hdlp, struct device *dev)
160 {
161 struct radio_attach_args arg;
162
163 arg.hwif = rhwp;
164 arg.hdl = hdlp;
165 return (config_found(dev, &arg, radioprint));
166 }
167
168 int
169 radioprint(void *aux, const char *pnp)
170 {
171 if (pnp != NULL)
172 aprint_normal("radio at %s", pnp);
173 return (UNCONF);
174 }
175
176 int
177 radiodetach(struct device *self, int flags)
178 {
179 /*struct radio_softc *sc = (struct radio_softc *)self;*/
180 int maj, mn;
181
182 /* locate the major number */
183 maj = cdevsw_lookup_major(&radio_cdevsw);
184
185 /* Nuke the vnodes for any open instances (calls close). */
186 mn = self->dv_unit;
187 vdevgone(maj, mn, mn, VCHR);
188
189 return (0);
190 }
191
192 int
193 radioactivate(struct device *self, enum devact act)
194 {
195 struct radio_softc *sc = (struct radio_softc *)self;
196
197 switch (act) {
198 case DVACT_ACTIVATE:
199 return (EOPNOTSUPP);
200
201 case DVACT_DEACTIVATE:
202 sc->sc_dying = 1;
203 break;
204 }
205 return (0);
206 }
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