radio.c revision 1.20.36.2
1 /* $NetBSD: radio.c,v 1.20.36.2 2008/04/06 09:58:50 mjf 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 (at) 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 1.20.36.2 2008/04/06 09:58:50 mjf 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, D_OTHER, 64 }; 65 66 extern struct cfdriver radio_cd; 67 68 int 69 radioprobe(struct device *parent, struct cfdata *match, 70 void *aux) 71 { 72 return (1); 73 } 74 75 void 76 radioattach(struct device *parent, struct device *self, void *aux) 77 { 78 struct radio_softc *sc = (void *)self; 79 struct radio_attach_args *sa = aux; 80 const struct radio_hw_if *hwp = sa->hwif; 81 void *hdlp = sa->hdl; 82 int maj; 83 84 printf("\n"); 85 sc->hw_if = hwp; 86 sc->hw_hdl = hdlp; 87 sc->sc_dev = parent; 88 89 maj = cdevsw_lookup_major(&radio_cdevsw); 90 91 device_register_name(makedev(maj, device_unit(self)), self, true, 92 DEV_AUDIO, device_xname(self)); 93 } 94 95 int 96 radioopen(dev_t dev, int flags, int fmt, struct lwp *l) 97 { 98 int unit; 99 struct radio_softc *sc; 100 101 unit = RADIOUNIT(dev); 102 if (unit >= radio_cd.cd_ndevs || 103 (sc = radio_cd.cd_devs[unit]) == NULL || 104 sc->hw_if == NULL) 105 return (ENXIO); 106 107 if (sc->hw_if->open != NULL) 108 return (sc->hw_if->open(sc->hw_hdl, flags, fmt, l->l_proc)); 109 else 110 return (0); 111 } 112 113 int 114 radioclose(dev_t dev, int flags, int fmt, struct lwp *l) 115 { 116 struct radio_softc *sc; 117 118 sc = radio_cd.cd_devs[RADIOUNIT(dev)]; 119 120 if (sc->hw_if->close != NULL) 121 return (sc->hw_if->close(sc->hw_hdl, flags, fmt, l->l_proc)); 122 else 123 return (0); 124 } 125 126 int 127 radioioctl(dev_t dev, u_long cmd, void *data, int flags, 128 struct lwp *l) 129 { 130 struct radio_softc *sc; 131 int unit, error; 132 133 unit = RADIOUNIT(dev); 134 if (unit >= radio_cd.cd_ndevs || 135 (sc = radio_cd.cd_devs[unit]) == NULL || sc->hw_if == NULL) 136 return (ENXIO); 137 138 error = EOPNOTSUPP; 139 switch (cmd) { 140 case RIOCGINFO: 141 if (sc->hw_if->get_info) 142 error = (sc->hw_if->get_info)(sc->hw_hdl, 143 (struct radio_info *)data); 144 break; 145 case RIOCSINFO: 146 if (sc->hw_if->set_info) 147 error = (sc->hw_if->set_info)(sc->hw_hdl, 148 (struct radio_info *)data); 149 break; 150 case RIOCSSRCH: 151 if (sc->hw_if->search) 152 error = (sc->hw_if->search)(sc->hw_hdl, 153 *(int *)data); 154 break; 155 default: 156 error = EINVAL; 157 } 158 159 return (error); 160 } 161 162 /* 163 * Called from hardware driver. This is where the MI radio driver gets 164 * probed/attached to the hardware driver 165 */ 166 struct device * 167 radio_attach_mi(const struct radio_hw_if *rhwp, void *hdlp, struct device *dev) 168 { 169 struct radio_attach_args arg; 170 171 arg.hwif = rhwp; 172 arg.hdl = hdlp; 173 return (config_found(dev, &arg, radioprint)); 174 } 175 176 int 177 radioprint(void *aux, const char *pnp) 178 { 179 if (pnp != NULL) 180 aprint_normal("radio at %s", pnp); 181 return (UNCONF); 182 } 183 184 int 185 radiodetach(struct device *self, int flags) 186 { 187 /*struct radio_softc *sc = (struct radio_softc *)self;*/ 188 int maj, mn; 189 190 device_deregister_all(self); 191 192 /* locate the major number */ 193 maj = cdevsw_lookup_major(&radio_cdevsw); 194 195 /* Nuke the vnodes for any open instances (calls close). */ 196 mn = device_unit(self); 197 vdevgone(maj, mn, mn, VCHR); 198 199 return (0); 200 } 201 202 int 203 radioactivate(struct device *self, enum devact act) 204 { 205 struct radio_softc *sc = (struct radio_softc *)self; 206 207 switch (act) { 208 case DVACT_ACTIVATE: 209 return (EOPNOTSUPP); 210 211 case DVACT_DEACTIVATE: 212 sc->sc_dying = 1; 213 break; 214 } 215 return (0); 216 } 217
Indexes created Fri Oct 17 00:09:41 GMT 2025