bthub.c revision 1.3
1 /* $NetBSD: bthub.c,v 1.3 2006/09/10 15:45:56 plunky Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Itronix Inc. 5 * All rights reserved. 6 * 7 * Written by Iain Hibbert for Itronix Inc. 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 * 3. The name of Itronix Inc. may not be used to endorse 18 * or promote products derived from this software without specific 19 * prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28 * ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: bthub.c,v 1.3 2006/09/10 15:45:56 plunky Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/conf.h> 39 #include <sys/device.h> 40 #include <sys/fcntl.h> 41 #include <sys/kernel.h> 42 #include <sys/queue.h> 43 #include <sys/malloc.h> 44 #include <sys/mbuf.h> 45 #include <sys/proc.h> 46 #include <sys/systm.h> 47 48 #include <prop/proplib.h> 49 50 #include <netbt/bluetooth.h> 51 52 #include <dev/bluetooth/btdev.h> 53 54 #include "ioconf.h" 55 56 /***************************************************************************** 57 * 58 * Bluetooth Device Hub 59 */ 60 61 struct bthub_softc { 62 struct device sc_dev; 63 LIST_HEAD(,btdev) sc_list; 64 }; 65 66 /* autoconf(9) glue */ 67 static int bthub_match(struct device *, struct cfdata *, void *); 68 static void bthub_attach(struct device *, struct device *, void *); 69 static int bthub_detach(struct device *, int); 70 71 CFATTACH_DECL(bthub, sizeof(struct bthub_softc), 72 bthub_match, bthub_attach, bthub_detach, NULL); 73 74 /* control file */ 75 dev_type_ioctl(bthubioctl); 76 77 const struct cdevsw bthub_cdevsw = { 78 nullopen, nullclose, noread, nowrite, bthubioctl, 79 nostop, notty, nopoll, nommap, nokqfilter, 80 }; 81 82 /* bthub functions */ 83 static int bthub_print(void *, const char *); 84 static int bthub_pioctl(dev_t, unsigned long, prop_dictionary_t, int, struct lwp *); 85 86 /***************************************************************************** 87 * 88 * bthub autoconf(9) routines 89 * 90 * A Hub is attached to each Bluetooth Controller as it is enabled 91 */ 92 93 static int 94 bthub_match(struct device *self, struct cfdata *cfdata, void *arg) 95 { 96 97 return 1; 98 } 99 100 static void 101 bthub_attach(struct device *parent, struct device *self, void *aux) 102 { 103 struct bthub_softc *sc = (struct bthub_softc *)self; 104 bdaddr_t *addr = aux; 105 prop_dictionary_t dict; 106 prop_object_t obj; 107 108 LIST_INIT(&sc->sc_list); 109 110 dict = device_properties(self); 111 obj = prop_data_create_data(addr, sizeof(*addr)); 112 prop_dictionary_set(dict, BTDEVladdr, obj); 113 prop_object_release(obj); 114 115 aprint_verbose(" %s %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 116 BTDEVladdr, 117 addr->b[5], addr->b[4], addr->b[3], 118 addr->b[2], addr->b[1], addr->b[0]); 119 120 aprint_normal("\n"); 121 } 122 123 static int 124 bthub_detach(struct device *self, int flags) 125 { 126 struct bthub_softc *sc = (struct bthub_softc *)self; 127 struct btdev *dev; 128 int err; 129 130 while (!LIST_EMPTY(&sc->sc_list)) { 131 dev = LIST_FIRST(&sc->sc_list); 132 LIST_REMOVE(dev, sc_next); 133 134 err = config_detach((struct device *)dev, flags); 135 if (err && (flags & DETACH_FORCE) == 0) { 136 LIST_INSERT_HEAD(&sc->sc_list, dev, sc_next); 137 return err; 138 } 139 } 140 141 return 0; 142 } 143 144 145 /***************************************************************************** 146 * 147 * bthub access functions to control device 148 */ 149 150 int 151 bthubioctl(dev_t devno, unsigned long cmd, caddr_t data, int flag, struct lwp *l) 152 { 153 prop_dictionary_t dict; 154 int err; 155 156 switch(cmd) { 157 case BTDEV_ATTACH: 158 case BTDEV_DETACH: 159 /* load dictionary */ 160 err = prop_dictionary_copyin_ioctl((const struct plistref *)data, flag, &dict); 161 if (err == 0) { 162 err = bthub_pioctl(devno, cmd, dict, flag, l); 163 prop_object_release(dict); 164 } 165 break; 166 167 default: 168 err = EPASSTHROUGH; 169 break; 170 } 171 172 return err; 173 } 174 175 static int 176 bthub_pioctl(dev_t devno, unsigned long cmd, prop_dictionary_t dict, int flag, struct lwp *l) 177 { 178 struct bthub_softc *sc; 179 struct btdev *dev; 180 prop_object_t obj; 181 int unit; 182 183 /* validate device type */ 184 obj = prop_dictionary_get(dict, BTDEVtype); 185 if (prop_object_type(obj) != PROP_TYPE_STRING) 186 return EINVAL; 187 188 /* validate local address */ 189 obj = prop_dictionary_get(dict, BTDEVladdr); 190 if (prop_data_size(obj) != sizeof(bdaddr_t)) 191 return EINVAL; 192 193 /* locate the relevant bthub */ 194 for (unit = 0 ; ; unit++) { 195 if (unit == bthub_cd.cd_ndevs) 196 return ENXIO; 197 198 sc = (struct bthub_softc *)bthub_cd.cd_devs[unit]; 199 if (sc == NULL) 200 continue; 201 202 if (prop_data_equals(obj, prop_dictionary_get(device_properties(&sc->sc_dev), BTDEVladdr))) 203 break; 204 } 205 206 /* validate remote address */ 207 obj = prop_dictionary_get(dict, BTDEVraddr); 208 if (prop_data_size(obj) != sizeof(bdaddr_t) 209 || bdaddr_any(prop_data_data_nocopy(obj))) 210 return EINVAL; 211 212 /* check for existing child device */ 213 LIST_FOREACH(dev, &sc->sc_list, sc_next) { 214 if ((*dev->sc_identify)(dev, dict)) 215 break; 216 } 217 218 switch (cmd) { 219 case BTDEV_ATTACH: /* attach BTDEV */ 220 if (dev != NULL) 221 return EADDRINUSE; 222 223 dev = (struct btdev *)config_found((struct device *)sc, 224 dict, bthub_print); 225 if (dev == NULL) 226 return ENXIO; 227 228 KASSERT(dev->sc_identify != NULL); 229 LIST_INSERT_HEAD(&sc->sc_list, dev, sc_next); 230 break; 231 232 case BTDEV_DETACH: /* detach BTDEV */ 233 if (dev == NULL) 234 return ENXIO; 235 236 LIST_REMOVE(dev, sc_next); 237 config_detach((struct device *)dev, DETACH_FORCE); 238 break; 239 } 240 241 return 0; 242 } 243 244 static int 245 bthub_print(void *aux, const char *pnp) 246 { 247 prop_dictionary_t dict = aux; 248 prop_object_t obj; 249 const bdaddr_t *raddr; 250 251 if (pnp != NULL) { 252 obj = prop_dictionary_get(dict, BTDEVtype); 253 aprint_normal("%s: %s '%s',", pnp, BTDEVtype, 254 prop_string_cstring_nocopy(obj)); 255 } 256 257 obj = prop_dictionary_get(dict, BTDEVraddr); 258 raddr = prop_data_data_nocopy(obj); 259 260 aprint_verbose(" %s %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 261 BTDEVraddr, 262 raddr->b[5], raddr->b[4], raddr->b[3], 263 raddr->b[2], raddr->b[1], raddr->b[0]); 264 265 return UNCONF; 266 } 267
Indexes created Mon Sep 29 21:09:56 GMT 2025