bthub.c revision 1.19
1 /* $NetBSD: bthub.c,v 1.19 2014/03/16 05:20:27 dholland 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 1.19 2014/03/16 05:20:27 dholland 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 .d_open = nullopen, 74 .d_close = nullclose, 75 .d_read = noread, 76 .d_write = nowrite, 77 .d_ioctl = bthubioctl, 78 .d_stop = nostop, 79 .d_tty = notty, 80 .d_poll = nopoll, 81 .d_mmap = nommap, 82 .d_kqfilter = nokqfilter, 83 .d_flag = D_OTHER, 84 }; 85 86 /* bthub functions */ 87 static int bthub_print(void *, const char *); 88 static int bthub_pioctl(dev_t, unsigned long, prop_dictionary_t, int, struct lwp *); 89 90 /***************************************************************************** 91 * 92 * bthub autoconf(9) routines 93 * 94 * A Hub is attached to each Bluetooth Controller as it is enabled 95 */ 96 97 static int 98 bthub_match(device_t self, cfdata_t cfdata, void *arg) 99 { 100 101 return 1; 102 } 103 104 static void 105 bthub_attach(device_t parent, device_t self, void *aux) 106 { 107 bdaddr_t *addr = aux; 108 prop_dictionary_t dict; 109 prop_object_t obj; 110 111 dict = device_properties(self); 112 obj = prop_data_create_data(addr, sizeof(*addr)); 113 prop_dictionary_set(dict, BTDEVladdr, obj); 114 prop_object_release(obj); 115 116 aprint_verbose(" %s %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 117 BTDEVladdr, 118 addr->b[5], addr->b[4], addr->b[3], 119 addr->b[2], addr->b[1], addr->b[0]); 120 121 aprint_normal("\n"); 122 123 pmf_device_register(self, NULL, NULL); 124 } 125 126 static int 127 bthub_detach(device_t self, int flags) 128 { 129 130 pmf_device_deregister(self); 131 132 return config_detach_children(self, flags); 133 } 134 135 /***************************************************************************** 136 * 137 * bthub access functions to control device 138 */ 139 140 int 141 bthubioctl(dev_t devno, unsigned long cmd, void *data, int flag, struct lwp *l) 142 { 143 prop_dictionary_t dict; 144 int err; 145 146 switch(cmd) { 147 case BTDEV_ATTACH: 148 case BTDEV_DETACH: 149 /* load dictionary */ 150 err = prop_dictionary_copyin_ioctl(data, cmd, &dict); 151 if (err == 0) { 152 err = bthub_pioctl(devno, cmd, dict, flag, l); 153 prop_object_release(dict); 154 } 155 break; 156 157 default: 158 err = EPASSTHROUGH; 159 break; 160 } 161 162 return err; 163 } 164 165 static int 166 bthub_pioctl(dev_t devno, unsigned long cmd, prop_dictionary_t dict, 167 int flag, struct lwp *l) 168 { 169 prop_data_t laddr, raddr; 170 prop_string_t service; 171 prop_dictionary_t prop; 172 prop_object_t obj; 173 device_t dev, self; 174 deviter_t di; 175 int unit; 176 177 /* validate local address */ 178 laddr = prop_dictionary_get(dict, BTDEVladdr); 179 if (prop_data_size(laddr) != sizeof(bdaddr_t)) 180 return EINVAL; 181 182 /* locate the relevant bthub */ 183 for (unit = 0 ; ; unit++) { 184 if (unit == bthub_cd.cd_ndevs) 185 return ENXIO; 186 187 self = device_lookup(&bthub_cd, unit); 188 if (self == NULL) 189 continue; 190 191 prop = device_properties(self); 192 obj = prop_dictionary_get(prop, BTDEVladdr); 193 if (prop_data_equals(laddr, obj)) 194 break; 195 } 196 197 /* validate remote address */ 198 raddr = prop_dictionary_get(dict, BTDEVraddr); 199 if (prop_data_size(raddr) != sizeof(bdaddr_t) 200 || bdaddr_any(prop_data_data_nocopy(raddr))) 201 return EINVAL; 202 203 /* validate service name */ 204 service = prop_dictionary_get(dict, BTDEVservice); 205 if (prop_object_type(service) != PROP_TYPE_STRING) 206 return EINVAL; 207 208 /* locate matching child device, if any */ 209 deviter_init(&di, 0); 210 while ((dev = deviter_next(&di)) != NULL) { 211 if (device_parent(dev) != self) 212 continue; 213 214 prop = device_properties(dev); 215 216 obj = prop_dictionary_get(prop, BTDEVraddr); 217 if (!prop_object_equals(raddr, obj)) 218 continue; 219 220 obj = prop_dictionary_get(prop, BTDEVservice); 221 if (!prop_object_equals(service, obj)) 222 continue; 223 224 break; 225 } 226 deviter_release(&di); 227 228 switch (cmd) { 229 case BTDEV_ATTACH: /* attach BTDEV */ 230 if (dev != NULL) 231 return EADDRINUSE; 232 233 dev = config_found(self, dict, bthub_print); 234 if (dev == NULL) 235 return ENXIO; 236 237 prop = device_properties(dev); 238 prop_dictionary_set(prop, BTDEVladdr, laddr); 239 prop_dictionary_set(prop, BTDEVraddr, raddr); 240 prop_dictionary_set(prop, BTDEVservice, service); 241 break; 242 243 case BTDEV_DETACH: /* detach BTDEV */ 244 if (dev == NULL) 245 return ENXIO; 246 247 config_detach(dev, DETACH_FORCE); 248 break; 249 } 250 251 return 0; 252 } 253 254 static int 255 bthub_print(void *aux, const char *pnp) 256 { 257 prop_dictionary_t dict = aux; 258 prop_object_t obj; 259 const bdaddr_t *raddr; 260 261 if (pnp != NULL) { 262 obj = prop_dictionary_get(dict, BTDEVtype); 263 aprint_normal("%s: %s '%s',", pnp, BTDEVtype, 264 prop_string_cstring_nocopy(obj)); 265 } 266 267 obj = prop_dictionary_get(dict, BTDEVraddr); 268 raddr = prop_data_data_nocopy(obj); 269 270 aprint_verbose(" %s %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 271 BTDEVraddr, 272 raddr->b[5], raddr->b[4], raddr->b[3], 273 raddr->b[2], raddr->b[1], raddr->b[0]); 274 275 return UNCONF; 276 } 277
Indexes created Mon Sep 29 21:09:56 GMT 2025