radio.c revision 1.4
1 /* $NetBSD: radio.c,v 1.4 2002/09/06 13:18:43 gehenna 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 1.4 2002/09/06 13:18:43 gehenna 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 struct cfattach radio_ca = { 55 sizeof(struct radio_softc), radioprobe, radioattach, 56 radiodetach, radioactivate 57 }; 58 59 dev_type_open(radioopen); 60 dev_type_close(radioclose); 61 dev_type_ioctl(radioioctl); 62 63 const struct cdevsw radio_cdevsw = { 64 radioopen, radioclose, noread, nowrite, radioioctl, 65 nostop, notty, nopoll, nommap, 66 }; 67 68 extern struct cfdriver radio_cd; 69 70 int 71 radioprobe(struct device *parent, struct cfdata *match, void *aux) 72 { 73 return (1); 74 } 75 76 void 77 radioattach(struct device *parent, struct device *self, void *aux) 78 { 79 struct radio_softc *sc = (void *)self; 80 struct radio_attach_args *sa = aux; 81 struct radio_hw_if *hwp = sa->hwif; 82 void *hdlp = sa->hdl; 83 84 printf("\n"); 85 sc->hw_if = hwp; 86 sc->hw_hdl = hdlp; 87 sc->sc_dev = parent; 88 } 89 90 int 91 radioopen(dev_t dev, int flags, int fmt, struct proc *p) 92 { 93 int unit; 94 struct radio_softc *sc; 95 96 unit = RADIOUNIT(dev); 97 if (unit >= radio_cd.cd_ndevs || 98 (sc = radio_cd.cd_devs[unit]) == NULL || 99 sc->hw_if == NULL) 100 return (ENXIO); 101 102 if (sc->hw_if->open != NULL) 103 return (sc->hw_if->open(sc->hw_hdl, flags, fmt, p)); 104 else 105 return (0); 106 } 107 108 int 109 radioclose(dev_t dev, int flags, int fmt, struct proc *p) 110 { 111 struct radio_softc *sc; 112 113 sc = radio_cd.cd_devs[RADIOUNIT(dev)]; 114 115 if (sc->hw_if->close != NULL) 116 return (sc->hw_if->close(sc->hw_hdl, flags, fmt, p)); 117 else 118 return (0); 119 } 120 121 int 122 radioioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p) 123 { 124 struct radio_softc *sc; 125 int unit, error; 126 127 unit = RADIOUNIT(dev); 128 if (unit >= radio_cd.cd_ndevs || 129 (sc = radio_cd.cd_devs[unit]) == NULL || sc->hw_if == NULL) 130 return (ENXIO); 131 132 error = EOPNOTSUPP; 133 switch (cmd) { 134 case RIOCGINFO: 135 if (sc->hw_if->get_info) 136 error = (sc->hw_if->get_info)(sc->hw_hdl, 137 (struct radio_info *)data); 138 break; 139 case RIOCSINFO: 140 if (sc->hw_if->set_info) 141 error = (sc->hw_if->set_info)(sc->hw_hdl, 142 (struct radio_info *)data); 143 break; 144 case RIOCSSRCH: 145 if (sc->hw_if->search) 146 error = (sc->hw_if->search)(sc->hw_hdl, 147 *(int *)data); 148 break; 149 default: 150 error = EINVAL; 151 } 152 153 return (error); 154 } 155 156 /* 157 * Called from hardware driver. This is where the MI radio driver gets 158 * probed/attached to the hardware driver 159 */ 160 struct device * 161 radio_attach_mi(struct radio_hw_if *rhwp, void *hdlp, struct device *dev) 162 { 163 struct radio_attach_args arg; 164 165 arg.hwif = rhwp; 166 arg.hdl = hdlp; 167 return (config_found(dev, &arg, radioprint)); 168 } 169 170 int 171 radioprint(void *aux, const char *pnp) 172 { 173 if (pnp != NULL) 174 printf("radio at %s", pnp); 175 return (UNCONF); 176 } 177 178 int 179 radiodetach(struct device *self, int flags) 180 { 181 /*struct radio_softc *sc = (struct radio_softc *)self;*/ 182 int maj, mn; 183 184 /* locate the major number */ 185 maj = cdevsw_lookup_major(&radio_cdevsw); 186 187 /* Nuke the vnodes for any open instances (calls close). */ 188 mn = self->dv_unit; 189 vdevgone(maj, mn, mn, VCHR); 190 191 return (0); 192 } 193 194 int 195 radioactivate(struct device *self, enum devact act) 196 { 197 struct radio_softc *sc = (struct radio_softc *)self; 198 199 switch (act) { 200 case DVACT_ACTIVATE: 201 return (EOPNOTSUPP); 202 break; 203 204 case DVACT_DEACTIVATE: 205 sc->sc_dying = 1; 206 break; 207 } 208 return (0); 209 } 210
Indexes created Mon Sep 22 13:09:51 GMT 2025