radio.c revision 1.13
1 /* $NetBSD: radio.c,v 1.13 2004/10/29 12:57:16 yamt 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 1.13 2004/10/29 12:57:16 yamt 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 const 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(const 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 } 207
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