1 /* $NetBSD: bthub.c,v 1.18 2012/04/03 09:32:53 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 1.18 2012/04/03 09:32:53 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 /* autoconf(9) glue */ 62 static int bthub_match(device_t, cfdata_t, void *); 63 static void bthub_attach(device_t, device_t, void *); 64 static int bthub_detach(device_t, int); 65 66 CFATTACH_DECL_NEW(bthub, 0, 67 bthub_match, bthub_attach, bthub_detach, NULL); 68 69 /* control file */ 70 dev_type_ioctl(bthubioctl); 71 72 const struct cdevsw bthub_cdevsw = { 73 nullopen, nullclose, noread, nowrite, bthubioctl, 74 nostop, notty, nopoll, nommap, nokqfilter, D_OTHER, 75 }; 76 77 /* bthub functions */ 78 static int bthub_print(void *, const char *); 79 static int bthub_pioctl(dev_t, unsigned long, prop_dictionary_t, int, struct lwp *); 80 81 /***************************************************************************** 82 * 83 * bthub autoconf(9) routines 84 * 85 * A Hub is attached to each Bluetooth Controller as it is enabled 86 */ 87 88 static int 89 bthub_match(device_t self, cfdata_t cfdata, void *arg) 90 { 91 92 return 1; 93 } 94 95 static void 96 bthub_attach(device_t parent, device_t self, void *aux) 97 { 98 bdaddr_t *addr = aux; 99 prop_dictionary_t dict; 100 prop_object_t obj; 101 102 dict = device_properties(self); 103 obj = prop_data_create_data(addr, sizeof(*addr)); 104 prop_dictionary_set(dict, BTDEVladdr, obj); 105 prop_object_release(obj); 106 107 aprint_verbose(" %s %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 108 BTDEVladdr, 109 addr->b[5], addr->b[4], addr->b[3], 110 addr->b[2], addr->b[1], addr->b[0]); 111 112 aprint_normal("\n"); 113 114 pmf_device_register(self, NULL, NULL); 115 } 116 117 static int 118 bthub_detach(device_t self, int flags) 119 { 120 121 pmf_device_deregister(self); 122 123 return config_detach_children(self, flags); 124 } 125 126 /***************************************************************************** 127 * 128 * bthub access functions to control device 129 */ 130 131 int 132 bthubioctl(dev_t devno, unsigned long cmd, void *data, int flag, struct lwp *l) 133 { 134 prop_dictionary_t dict; 135 int err; 136 137 switch(cmd) { 138 case BTDEV_ATTACH: 139 case BTDEV_DETACH: 140 /* load dictionary */ 141 err = prop_dictionary_copyin_ioctl(data, cmd, &dict); 142 if (err == 0) { 143 err = bthub_pioctl(devno, cmd, dict, flag, l); 144 prop_object_release(dict); 145 } 146 break; 147 148 default: 149 err = EPASSTHROUGH; 150 break; 151 } 152 153 return err; 154 } 155 156 static int 157 bthub_pioctl(dev_t devno, unsigned long cmd, prop_dictionary_t dict, 158 int flag, struct lwp *l) 159 { 160 prop_data_t laddr, raddr; 161 prop_string_t service; 162 prop_dictionary_t prop; 163 prop_object_t obj; 164 device_t dev, self; 165 deviter_t di; 166 int unit; 167 168 /* validate local address */ 169 laddr = prop_dictionary_get(dict, BTDEVladdr); 170 if (prop_data_size(laddr) != sizeof(bdaddr_t)) 171 return EINVAL; 172 173 /* locate the relevant bthub */ 174 for (unit = 0 ; ; unit++) { 175 if (unit == bthub_cd.cd_ndevs) 176 return ENXIO; 177 178 self = device_lookup(&bthub_cd, unit); 179 if (self == NULL) 180 continue; 181 182 prop = device_properties(self); 183 obj = prop_dictionary_get(prop, BTDEVladdr); 184 if (prop_data_equals(laddr, obj)) 185 break; 186 } 187 188 /* validate remote address */ 189 raddr = prop_dictionary_get(dict, BTDEVraddr); 190 if (prop_data_size(raddr) != sizeof(bdaddr_t) 191 || bdaddr_any(prop_data_data_nocopy(raddr))) 192 return EINVAL; 193 194 /* validate service name */ 195 service = prop_dictionary_get(dict, BTDEVservice); 196 if (prop_object_type(service) != PROP_TYPE_STRING) 197 return EINVAL; 198 199 /* locate matching child device, if any */ 200 deviter_init(&di, 0); 201 while ((dev = deviter_next(&di)) != NULL) { 202 if (device_parent(dev) != self) 203 continue; 204 205 prop = device_properties(dev); 206 207 obj = prop_dictionary_get(prop, BTDEVraddr); 208 if (!prop_object_equals(raddr, obj)) 209 continue; 210 211 obj = prop_dictionary_get(prop, BTDEVservice); 212 if (!prop_object_equals(service, obj)) 213 continue; 214 215 break; 216 } 217 deviter_release(&di); 218 219 switch (cmd) { 220 case BTDEV_ATTACH: /* attach BTDEV */ 221 if (dev != NULL) 222 return EADDRINUSE; 223 224 dev = config_found(self, dict, bthub_print); 225 if (dev == NULL) 226 return ENXIO; 227 228 prop = device_properties(dev); 229 prop_dictionary_set(prop, BTDEVladdr, laddr); 230 prop_dictionary_set(prop, BTDEVraddr, raddr); 231 prop_dictionary_set(prop, BTDEVservice, service); 232 break; 233 234 case BTDEV_DETACH: /* detach BTDEV */ 235 if (dev == NULL) 236 return ENXIO; 237 238 config_detach(dev, DETACH_FORCE); 239 break; 240 } 241 242 return 0; 243 } 244 245 static int 246 bthub_print(void *aux, const char *pnp) 247 { 248 prop_dictionary_t dict = aux; 249 prop_object_t obj; 250 const bdaddr_t *raddr; 251 252 if (pnp != NULL) { 253 obj = prop_dictionary_get(dict, BTDEVtype); 254 aprint_normal("%s: %s '%s',", pnp, BTDEVtype, 255 prop_string_cstring_nocopy(obj)); 256 } 257 258 obj = prop_dictionary_get(dict, BTDEVraddr); 259 raddr = prop_data_data_nocopy(obj); 260 261 aprint_verbose(" %s %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 262 BTDEVraddr, 263 raddr->b[5], raddr->b[4], raddr->b[3], 264 raddr->b[2], raddr->b[1], raddr->b[0]); 265 266 return UNCONF; 267 } 268