radio.c revision 1.21
1 /* $NetBSD: radio.c,v 1.21 2008/06/08 18:18:33 tsutsui 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 1.21 2008/06/08 18:18:33 tsutsui 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 83 printf("\n"); 84 sc->hw_if = hwp; 85 sc->hw_hdl = hdlp; 86 sc->sc_dev = parent; 87 } 88 89 int 90 radioopen(dev_t dev, int flags, int fmt, struct lwp *l) 91 { 92 int unit; 93 struct radio_softc *sc; 94 95 unit = RADIOUNIT(dev); 96 sc = device_lookup_private(&radio_cd, unit); 97 if (sc == NULL || 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, l->l_proc)); 102 else 103 return (0); 104 } 105 106 int 107 radioclose(dev_t dev, int flags, int fmt, struct lwp *l) 108 { 109 struct radio_softc *sc; 110 111 sc = device_lookup_private(&radio_cd, RADIOUNIT(dev)); 112 113 if (sc->hw_if->close != NULL) 114 return (sc->hw_if->close(sc->hw_hdl, flags, fmt, l->l_proc)); 115 else 116 return (0); 117 } 118 119 int 120 radioioctl(dev_t dev, u_long cmd, void *data, int flags, 121 struct lwp *l) 122 { 123 struct radio_softc *sc; 124 int unit, error; 125 126 unit = RADIOUNIT(dev); 127 sc = device_lookup_private(&radio_cd, unit); 128 if (sc == NULL || sc->hw_if == NULL) 129 return (ENXIO); 130 131 error = EOPNOTSUPP; 132 switch (cmd) { 133 case RIOCGINFO: 134 if (sc->hw_if->get_info) 135 error = (sc->hw_if->get_info)(sc->hw_hdl, 136 (struct radio_info *)data); 137 break; 138 case RIOCSINFO: 139 if (sc->hw_if->set_info) 140 error = (sc->hw_if->set_info)(sc->hw_hdl, 141 (struct radio_info *)data); 142 break; 143 case RIOCSSRCH: 144 if (sc->hw_if->search) 145 error = (sc->hw_if->search)(sc->hw_hdl, 146 *(int *)data); 147 break; 148 default: 149 error = EINVAL; 150 } 151 152 return (error); 153 } 154 155 /* 156 * Called from hardware driver. This is where the MI radio driver gets 157 * probed/attached to the hardware driver 158 */ 159 struct device * 160 radio_attach_mi(const struct radio_hw_if *rhwp, void *hdlp, struct device *dev) 161 { 162 struct radio_attach_args arg; 163 164 arg.hwif = rhwp; 165 arg.hdl = hdlp; 166 return (config_found(dev, &arg, radioprint)); 167 } 168 169 int 170 radioprint(void *aux, const char *pnp) 171 { 172 if (pnp != NULL) 173 aprint_normal("radio at %s", pnp); 174 return (UNCONF); 175 } 176 177 int 178 radiodetach(struct device *self, int flags) 179 { 180 /*struct radio_softc *sc = (struct radio_softc *)self;*/ 181 int maj, mn; 182 183 /* locate the major number */ 184 maj = cdevsw_lookup_major(&radio_cdevsw); 185 186 /* Nuke the vnodes for any open instances (calls close). */ 187 mn = device_unit(self); 188 vdevgone(maj, mn, mn, VCHR); 189 190 return (0); 191 } 192 193 int 194 radioactivate(struct device *self, enum devact act) 195 { 196 struct radio_softc *sc = (struct radio_softc *)self; 197 198 switch (act) { 199 case DVACT_ACTIVATE: 200 return (EOPNOTSUPP); 201 202 case DVACT_DEACTIVATE: 203 sc->sc_dying = 1; 204 break; 205 } 206 return (0); 207 } 208
Indexes created Tue Sep 23 07:09:52 GMT 2025