1 /* $NetBSD: radio.c,v 1.31 2021/08/07 16:19:08 thorpej 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 1.31 2021/08/07 16:19:08 thorpej 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 #include "ioconf.h" 48 49 struct radio_softc { 50 void *hw_hdl; /* hardware driver handle */ 51 device_t sc_dev; /* hardware device struct */ 52 const struct radio_hw_if *hw_if; /* hardware interface */ 53 }; 54 55 static int radioprobe(device_t, cfdata_t, void *); 56 static void radioattach(device_t, device_t, void *); 57 static int radioprint(void *, const char *); 58 static int radiodetach(device_t, int); 59 60 CFATTACH_DECL_NEW(radio, sizeof(struct radio_softc), 61 radioprobe, radioattach, radiodetach, NULL); 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 .d_open = radioopen, 69 .d_close = radioclose, 70 .d_read = noread, 71 .d_write = nowrite, 72 .d_ioctl = radioioctl, 73 .d_stop = nostop, 74 .d_tty = notty, 75 .d_poll = nopoll, 76 .d_mmap = nommap, 77 .d_kqfilter = nokqfilter, 78 .d_discard = nodiscard, 79 .d_flag = D_OTHER, 80 }; 81 82 static int 83 radioprobe(device_t parent, cfdata_t match, void *aux) 84 { 85 return (1); 86 } 87 88 static void 89 radioattach(device_t parent, device_t self, void *aux) 90 { 91 struct radio_softc *sc = device_private(self); 92 struct radio_attach_args *sa = aux; 93 const struct radio_hw_if *hwp = sa->hwif; 94 void *hdlp = sa->hdl; 95 96 aprint_naive("\n"); 97 aprint_normal("\n"); 98 sc->hw_if = hwp; 99 sc->hw_hdl = hdlp; 100 sc->sc_dev = self; 101 } 102 103 static int 104 radioopen(dev_t dev, int flags, int fmt, struct lwp *l) 105 { 106 int unit; 107 struct radio_softc *sc; 108 109 unit = RADIOUNIT(dev); 110 sc = device_lookup_private(&radio_cd, unit); 111 if (sc == NULL || sc->hw_if == NULL) 112 return (ENXIO); 113 114 if (sc->hw_if->open != NULL) 115 return (sc->hw_if->open(sc->hw_hdl, flags, fmt, l->l_proc)); 116 else 117 return (0); 118 } 119 120 static int 121 radioclose(dev_t dev, int flags, int fmt, struct lwp *l) 122 { 123 struct radio_softc *sc; 124 125 sc = device_lookup_private(&radio_cd, RADIOUNIT(dev)); 126 127 if (sc->hw_if->close != NULL) 128 return (sc->hw_if->close(sc->hw_hdl, flags, fmt, l->l_proc)); 129 else 130 return (0); 131 } 132 133 static int 134 radioioctl(dev_t dev, u_long cmd, void *data, int flags, 135 struct lwp *l) 136 { 137 struct radio_softc *sc; 138 int unit, error; 139 140 unit = RADIOUNIT(dev); 141 sc = device_lookup_private(&radio_cd, unit); 142 if (sc == NULL || sc->hw_if == NULL) 143 return (ENXIO); 144 145 error = EOPNOTSUPP; 146 switch (cmd) { 147 case RIOCGINFO: 148 if (sc->hw_if->get_info) 149 error = (sc->hw_if->get_info)(sc->hw_hdl, 150 (struct radio_info *)data); 151 break; 152 case RIOCSINFO: 153 if (sc->hw_if->set_info) 154 error = (sc->hw_if->set_info)(sc->hw_hdl, 155 (struct radio_info *)data); 156 break; 157 case RIOCSSRCH: 158 if (sc->hw_if->search) 159 error = (sc->hw_if->search)(sc->hw_hdl, 160 *(int *)data); 161 break; 162 default: 163 error = EINVAL; 164 } 165 166 return (error); 167 } 168 169 /* 170 * Called from hardware driver. This is where the MI radio driver gets 171 * probed/attached to the hardware driver 172 */ 173 device_t 174 radio_attach_mi(const struct radio_hw_if *rhwp, void *hdlp, device_t dev) 175 { 176 struct radio_attach_args arg; 177 178 arg.hwif = rhwp; 179 arg.hdl = hdlp; 180 return (config_found(dev, &arg, radioprint, CFARGS_NONE)); 181 } 182 183 static int 184 radioprint(void *aux, const char *pnp) 185 { 186 if (pnp != NULL) 187 aprint_normal("radio at %s", pnp); 188 return (UNCONF); 189 } 190 191 static int 192 radiodetach(device_t self, int flags) 193 { 194 int maj, mn; 195 196 /* locate the major number */ 197 maj = cdevsw_lookup_major(&radio_cdevsw); 198 199 /* Nuke the vnodes for any open instances (calls close). */ 200 mn = device_unit(self); 201 vdevgone(maj, mn, mn, VCHR); 202 203 return (0); 204 } 205
Indexes created Sat Sep 20 22:09:52 GMT 2025