radio.c revision 1.24
1 /* $NetBSD: radio.c,v 1.24 2010/01/21 02:19:55 dyoung 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 1.24 2010/01/21 02:19:55 dyoung 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 }; 52 53 static int radioprobe(device_t, cfdata_t, void *); 54 static void radioattach(device_t, device_t, void *); 55 static int radioprint(void *, const char *); 56 static int radiodetach(device_t, int); 57 58 CFATTACH_DECL_NEW(radio, sizeof(struct radio_softc), 59 radioprobe, radioattach, radiodetach, NULL); 60 61 static dev_type_open(radioopen); 62 static dev_type_close(radioclose); 63 static dev_type_ioctl(radioioctl); 64 65 const struct cdevsw radio_cdevsw = { 66 radioopen, radioclose, noread, nowrite, radioioctl, 67 nostop, notty, nopoll, nommap, nokqfilter, D_OTHER, 68 }; 69 70 extern struct cfdriver radio_cd; 71 72 static int 73 radioprobe(device_t parent, cfdata_t match, void *aux) 74 { 75 return (1); 76 } 77 78 static void 79 radioattach(device_t parent, device_t self, void *aux) 80 { 81 struct radio_softc *sc = (void *)self; 82 struct radio_attach_args *sa = aux; 83 const struct radio_hw_if *hwp = sa->hwif; 84 void *hdlp = sa->hdl; 85 86 aprint_naive("\n"); 87 aprint_normal("\n"); 88 sc->hw_if = hwp; 89 sc->hw_hdl = hdlp; 90 sc->sc_dev = parent; 91 } 92 93 static int 94 radioopen(dev_t dev, int flags, int fmt, struct lwp *l) 95 { 96 int unit; 97 struct radio_softc *sc; 98 99 unit = RADIOUNIT(dev); 100 sc = device_lookup_private(&radio_cd, unit); 101 if (sc == NULL || sc->hw_if == NULL) 102 return (ENXIO); 103 104 if (sc->hw_if->open != NULL) 105 return (sc->hw_if->open(sc->hw_hdl, flags, fmt, l->l_proc)); 106 else 107 return (0); 108 } 109 110 static int 111 radioclose(dev_t dev, int flags, int fmt, struct lwp *l) 112 { 113 struct radio_softc *sc; 114 115 sc = device_lookup_private(&radio_cd, RADIOUNIT(dev)); 116 117 if (sc->hw_if->close != NULL) 118 return (sc->hw_if->close(sc->hw_hdl, flags, fmt, l->l_proc)); 119 else 120 return (0); 121 } 122 123 static int 124 radioioctl(dev_t dev, u_long cmd, void *data, int flags, 125 struct lwp *l) 126 { 127 struct radio_softc *sc; 128 int unit, error; 129 130 unit = RADIOUNIT(dev); 131 sc = device_lookup_private(&radio_cd, unit); 132 if (sc == NULL || sc->hw_if == NULL) 133 return (ENXIO); 134 135 error = EOPNOTSUPP; 136 switch (cmd) { 137 case RIOCGINFO: 138 if (sc->hw_if->get_info) 139 error = (sc->hw_if->get_info)(sc->hw_hdl, 140 (struct radio_info *)data); 141 break; 142 case RIOCSINFO: 143 if (sc->hw_if->set_info) 144 error = (sc->hw_if->set_info)(sc->hw_hdl, 145 (struct radio_info *)data); 146 break; 147 case RIOCSSRCH: 148 if (sc->hw_if->search) 149 error = (sc->hw_if->search)(sc->hw_hdl, 150 *(int *)data); 151 break; 152 default: 153 error = EINVAL; 154 } 155 156 return (error); 157 } 158 159 /* 160 * Called from hardware driver. This is where the MI radio driver gets 161 * probed/attached to the hardware driver 162 */ 163 device_t 164 radio_attach_mi(const struct radio_hw_if *rhwp, void *hdlp, device_t dev) 165 { 166 struct radio_attach_args arg; 167 168 arg.hwif = rhwp; 169 arg.hdl = hdlp; 170 return (config_found(dev, &arg, radioprint)); 171 } 172 173 static int 174 radioprint(void *aux, const char *pnp) 175 { 176 if (pnp != NULL) 177 aprint_normal("radio at %s", pnp); 178 return (UNCONF); 179 } 180 181 static int 182 radiodetach(device_t self, int flags) 183 { 184 /*struct radio_softc *sc = (struct radio_softc *)self;*/ 185 int maj, mn; 186 187 /* locate the major number */ 188 maj = cdevsw_lookup_major(&radio_cdevsw); 189 190 /* Nuke the vnodes for any open instances (calls close). */ 191 mn = device_unit(self); 192 vdevgone(maj, mn, mn, VCHR); 193 194 return (0); 195 } 196
Indexes created Wed Sep 24 14:09:57 GMT 2025