bthub.c revision 1.20
1 /* $NetBSD: bthub.c,v 1.20 2014/07/25 08:10:36 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 1.20 2014/07/25 08:10:36 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_discard = nodiscard, 84 .d_flag = D_OTHER, 85 }; 86 87 /* bthub functions */ 88 static int bthub_print(void *, const char *); 89 static int bthub_pioctl(dev_t, unsigned long, prop_dictionary_t, int, struct lwp *); 90 91 /***************************************************************************** 92 * 93 * bthub autoconf(9) routines 94 * 95 * A Hub is attached to each Bluetooth Controller as it is enabled 96 */ 97 98 static int 99 bthub_match(device_t self, cfdata_t cfdata, void *arg) 100 { 101 102 return 1; 103 } 104 105 static void 106 bthub_attach(device_t parent, device_t self, void *aux) 107 { 108 bdaddr_t *addr = aux; 109 prop_dictionary_t dict; 110 prop_object_t obj; 111 112 dict = device_properties(self); 113 obj = prop_data_create_data(addr, sizeof(*addr)); 114 prop_dictionary_set(dict, BTDEVladdr, obj); 115 prop_object_release(obj); 116 117 aprint_verbose(" %s %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 118 BTDEVladdr, 119 addr->b[5], addr->b[4], addr->b[3], 120 addr->b[2], addr->b[1], addr->b[0]); 121 122 aprint_normal("\n"); 123 124 pmf_device_register(self, NULL, NULL); 125 } 126 127 static int 128 bthub_detach(device_t self, int flags) 129 { 130 131 pmf_device_deregister(self); 132 133 return config_detach_children(self, flags); 134 } 135 136 /***************************************************************************** 137 * 138 * bthub access functions to control device 139 */ 140 141 int 142 bthubioctl(dev_t devno, unsigned long cmd, void *data, int flag, struct lwp *l) 143 { 144 prop_dictionary_t dict; 145 int err; 146 147 switch(cmd) { 148 case BTDEV_ATTACH: 149 case BTDEV_DETACH: 150 /* load dictionary */ 151 err = prop_dictionary_copyin_ioctl(data, cmd, &dict); 152 if (err == 0) { 153 err = bthub_pioctl(devno, cmd, dict, flag, l); 154 prop_object_release(dict); 155 } 156 break; 157 158 default: 159 err = EPASSTHROUGH; 160 break; 161 } 162 163 return err; 164 } 165 166 static int 167 bthub_pioctl(dev_t devno, unsigned long cmd, prop_dictionary_t dict, 168 int flag, struct lwp *l) 169 { 170 prop_data_t laddr, raddr; 171 prop_string_t service; 172 prop_dictionary_t prop; 173 prop_object_t obj; 174 device_t dev, self; 175 deviter_t di; 176 int unit; 177 178 /* validate local address */ 179 laddr = prop_dictionary_get(dict, BTDEVladdr); 180 if (prop_data_size(laddr) != sizeof(bdaddr_t)) 181 return EINVAL; 182 183 /* locate the relevant bthub */ 184 for (unit = 0 ; ; unit++) { 185 if (unit == bthub_cd.cd_ndevs) 186 return ENXIO; 187 188 self = device_lookup(&bthub_cd, unit); 189 if (self == NULL) 190 continue; 191 192 prop = device_properties(self); 193 obj = prop_dictionary_get(prop, BTDEVladdr); 194 if (prop_data_equals(laddr, obj)) 195 break; 196 } 197 198 /* validate remote address */ 199 raddr = prop_dictionary_get(dict, BTDEVraddr); 200 if (prop_data_size(raddr) != sizeof(bdaddr_t) 201 || bdaddr_any(prop_data_data_nocopy(raddr))) 202 return EINVAL; 203 204 /* validate service name */ 205 service = prop_dictionary_get(dict, BTDEVservice); 206 if (prop_object_type(service) != PROP_TYPE_STRING) 207 return EINVAL; 208 209 /* locate matching child device, if any */ 210 deviter_init(&di, 0); 211 while ((dev = deviter_next(&di)) != NULL) { 212 if (device_parent(dev) != self) 213 continue; 214 215 prop = device_properties(dev); 216 217 obj = prop_dictionary_get(prop, BTDEVraddr); 218 if (!prop_object_equals(raddr, obj)) 219 continue; 220 221 obj = prop_dictionary_get(prop, BTDEVservice); 222 if (!prop_object_equals(service, obj)) 223 continue; 224 225 break; 226 } 227 deviter_release(&di); 228 229 switch (cmd) { 230 case BTDEV_ATTACH: /* attach BTDEV */ 231 if (dev != NULL) 232 return EADDRINUSE; 233 234 dev = config_found(self, dict, bthub_print); 235 if (dev == NULL) 236 return ENXIO; 237 238 prop = device_properties(dev); 239 prop_dictionary_set(prop, BTDEVladdr, laddr); 240 prop_dictionary_set(prop, BTDEVraddr, raddr); 241 prop_dictionary_set(prop, BTDEVservice, service); 242 break; 243 244 case BTDEV_DETACH: /* detach BTDEV */ 245 if (dev == NULL) 246 return ENXIO; 247 248 config_detach(dev, DETACH_FORCE); 249 break; 250 } 251 252 return 0; 253 } 254 255 static int 256 bthub_print(void *aux, const char *pnp) 257 { 258 prop_dictionary_t dict = aux; 259 prop_object_t obj; 260 const bdaddr_t *raddr; 261 262 if (pnp != NULL) { 263 obj = prop_dictionary_get(dict, BTDEVtype); 264 aprint_normal("%s: %s '%s',", pnp, BTDEVtype, 265 prop_string_cstring_nocopy(obj)); 266 } 267 268 obj = prop_dictionary_get(dict, BTDEVraddr); 269 raddr = prop_data_data_nocopy(obj); 270 271 aprint_verbose(" %s %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 272 BTDEVraddr, 273 raddr->b[5], raddr->b[4], raddr->b[3], 274 raddr->b[2], raddr->b[1], raddr->b[0]); 275 276 return UNCONF; 277 } 278
Indexes created Mon Sep 29 21:09:56 GMT 2025