radio.c revision 1.21.4.1
1 /* $NetBSD: radio.c,v 1.21.4.1 2008/10/19 22:16:18 haad 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 1.21.4.1 2008/10/19 22:16:18 haad 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 47 struct radio_softc { 48 void *hw_hdl; /* hardware driver handle */ 49 device_t sc_dev; /* hardware device struct */ 50 const struct radio_hw_if *hw_if; /* hardware interface */ 51 char sc_dying; /* device detached */ 52 }; 53 54 static int radioprobe(device_t, cfdata_t, void *); 55 static void radioattach(device_t, device_t, void *); 56 static int radioprint(void *, const char *); 57 static int radiodetach(device_t, int); 58 static int radioactivate(device_t, enum devact); 59 60 CFATTACH_DECL_NEW(radio, sizeof(struct radio_softc), 61 radioprobe, radioattach, radiodetach, radioactivate); 62 63 static dev_type_open(radioopen); 64 static dev_type_close(radioclose); 65 static dev_type_ioctl(radioioctl); 66 67 const struct cdevsw radio_cdevsw = { 68 radioopen, radioclose, noread, nowrite, radioioctl, 69 nostop, notty, nopoll, nommap, nokqfilter, D_OTHER, 70 }; 71 72 extern struct cfdriver radio_cd; 73 74 static int 75 radioprobe(device_t parent, cfdata_t match, void *aux) 76 { 77 return (1); 78 } 79 80 static void 81 radioattach(device_t parent, device_t self, void *aux) 82 { 83 struct radio_softc *sc = (void *)self; 84 struct radio_attach_args *sa = aux; 85 const struct radio_hw_if *hwp = sa->hwif; 86 void *hdlp = sa->hdl; 87 88 aprint_naive("\n"); 89 aprint_normal("\n"); 90 sc->hw_if = hwp; 91 sc->hw_hdl = hdlp; 92 sc->sc_dev = parent; 93 } 94 95 static 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 sc = device_lookup_private(&radio_cd, unit); 103 if (sc == NULL || sc->hw_if == NULL) 104 return (ENXIO); 105 106 if (sc->hw_if->open != NULL) 107 return (sc->hw_if->open(sc->hw_hdl, flags, fmt, l->l_proc)); 108 else 109 return (0); 110 } 111 112 static int 113 radioclose(dev_t dev, int flags, int fmt, struct lwp *l) 114 { 115 struct radio_softc *sc; 116 117 sc = device_lookup_private(&radio_cd, RADIOUNIT(dev)); 118 119 if (sc->hw_if->close != NULL) 120 return (sc->hw_if->close(sc->hw_hdl, flags, fmt, l->l_proc)); 121 else 122 return (0); 123 } 124 125 static int 126 radioioctl(dev_t dev, u_long cmd, void *data, int flags, 127 struct lwp *l) 128 { 129 struct radio_softc *sc; 130 int unit, error; 131 132 unit = RADIOUNIT(dev); 133 sc = device_lookup_private(&radio_cd, unit); 134 if (sc == NULL || sc->hw_if == NULL) 135 return (ENXIO); 136 137 error = EOPNOTSUPP; 138 switch (cmd) { 139 case RIOCGINFO: 140 if (sc->hw_if->get_info) 141 error = (sc->hw_if->get_info)(sc->hw_hdl, 142 (struct radio_info *)data); 143 break; 144 case RIOCSINFO: 145 if (sc->hw_if->set_info) 146 error = (sc->hw_if->set_info)(sc->hw_hdl, 147 (struct radio_info *)data); 148 break; 149 case RIOCSSRCH: 150 if (sc->hw_if->search) 151 error = (sc->hw_if->search)(sc->hw_hdl, 152 *(int *)data); 153 break; 154 default: 155 error = EINVAL; 156 } 157 158 return (error); 159 } 160 161 /* 162 * Called from hardware driver. This is where the MI radio driver gets 163 * probed/attached to the hardware driver 164 */ 165 device_t 166 radio_attach_mi(const struct radio_hw_if *rhwp, void *hdlp, device_t dev) 167 { 168 struct radio_attach_args arg; 169 170 arg.hwif = rhwp; 171 arg.hdl = hdlp; 172 return (config_found(dev, &arg, radioprint)); 173 } 174 175 static int 176 radioprint(void *aux, const char *pnp) 177 { 178 if (pnp != NULL) 179 aprint_normal("radio at %s", pnp); 180 return (UNCONF); 181 } 182 183 static int 184 radiodetach(device_t self, int flags) 185 { 186 /*struct radio_softc *sc = (struct radio_softc *)self;*/ 187 int maj, mn; 188 189 /* locate the major number */ 190 maj = cdevsw_lookup_major(&radio_cdevsw); 191 192 /* Nuke the vnodes for any open instances (calls close). */ 193 mn = device_unit(self); 194 vdevgone(maj, mn, mn, VCHR); 195 196 return (0); 197 } 198 199 static int 200 radioactivate(device_t self, enum devact act) 201 { 202 struct radio_softc *sc = device_private(self); 203 204 switch (act) { 205 case DVACT_ACTIVATE: 206 return (EOPNOTSUPP); 207 208 case DVACT_DEACTIVATE: 209 sc->sc_dying = 1; 210 break; 211 } 212 return (0); 213 } 214
Indexes created Wed Oct 15 16:09:53 GMT 2025