1 /* $NetBSD: bthub.c,v 1.26 2021/08/07 16:19:09 thorpej 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 1.26 2021/08/07 16:19:09 thorpej 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_copy(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 if (!pmf_device_register(self, NULL, NULL)) { 125 /* 126 * XXX this should not be allowed to happen, but 127 * avoiding it needs a pretty big rearrangement of 128 * device attachments. 129 */ 130 aprint_error_dev(self, "couldn't establish power handler\n"); 131 } 132 } 133 134 static int 135 bthub_detach(device_t self, int flags) 136 { 137 138 pmf_device_deregister(self); 139 140 return config_detach_children(self, flags); 141 } 142 143 /***************************************************************************** 144 * 145 * bthub access functions to control device 146 */ 147 148 int 149 bthubioctl(dev_t devno, unsigned long cmd, void *data, int flag, struct lwp *l) 150 { 151 prop_dictionary_t dict; 152 int err; 153 154 switch(cmd) { 155 case BTDEV_ATTACH: 156 case BTDEV_DETACH: 157 /* load dictionary */ 158 err = prop_dictionary_copyin_ioctl(data, cmd, &dict); 159 if (err == 0) { 160 err = bthub_pioctl(devno, cmd, dict, flag, l); 161 prop_object_release(dict); 162 } 163 break; 164 165 default: 166 err = EPASSTHROUGH; 167 break; 168 } 169 170 return err; 171 } 172 173 static int 174 bthub_pioctl(dev_t devno, unsigned long cmd, prop_dictionary_t dict, 175 int flag, struct lwp *l) 176 { 177 prop_data_t laddr, raddr; 178 prop_string_t service; 179 prop_dictionary_t prop; 180 prop_object_t obj; 181 device_t dev, self; 182 deviter_t di; 183 int unit; 184 185 /* validate local address */ 186 laddr = prop_dictionary_get(dict, BTDEVladdr); 187 if (prop_data_size(laddr) != sizeof(bdaddr_t)) 188 return EINVAL; 189 190 /* locate the relevant bthub */ 191 for (unit = 0 ; ; unit++) { 192 if (unit == bthub_cd.cd_ndevs) 193 return ENXIO; 194 195 self = device_lookup(&bthub_cd, unit); 196 if (self == NULL) 197 continue; 198 199 prop = device_properties(self); 200 obj = prop_dictionary_get(prop, BTDEVladdr); 201 if (prop_data_equals(laddr, obj)) 202 break; 203 } 204 205 /* validate remote address */ 206 raddr = prop_dictionary_get(dict, BTDEVraddr); 207 if (prop_data_size(raddr) != sizeof(bdaddr_t) 208 || bdaddr_any(prop_data_value(raddr))) 209 return EINVAL; 210 211 /* validate service name */ 212 service = prop_dictionary_get(dict, BTDEVservice); 213 if (prop_object_type(service) != PROP_TYPE_STRING) 214 return EINVAL; 215 216 /* locate matching child device, if any */ 217 deviter_init(&di, 0); 218 while ((dev = deviter_next(&di)) != NULL) { 219 if (device_parent(dev) != self) 220 continue; 221 222 prop = device_properties(dev); 223 224 obj = prop_dictionary_get(prop, BTDEVraddr); 225 if (!prop_object_equals(raddr, obj)) 226 continue; 227 228 obj = prop_dictionary_get(prop, BTDEVservice); 229 if (!prop_object_equals(service, obj)) 230 continue; 231 232 break; 233 } 234 deviter_release(&di); 235 236 switch (cmd) { 237 case BTDEV_ATTACH: /* attach BTDEV */ 238 if (dev != NULL) 239 return EADDRINUSE; 240 241 dev = config_found(self, dict, bthub_print, CFARGS_NONE); 242 if (dev == NULL) 243 return ENXIO; 244 245 prop = device_properties(dev); 246 prop_dictionary_set(prop, BTDEVladdr, laddr); 247 prop_dictionary_set(prop, BTDEVraddr, raddr); 248 prop_dictionary_set(prop, BTDEVservice, service); 249 break; 250 251 case BTDEV_DETACH: /* detach BTDEV */ 252 if (dev == NULL) 253 return ENXIO; 254 255 config_detach(dev, DETACH_FORCE); 256 break; 257 } 258 259 return 0; 260 } 261 262 static int 263 bthub_print(void *aux, const char *pnp) 264 { 265 prop_dictionary_t dict = aux; 266 prop_object_t obj; 267 const bdaddr_t *raddr; 268 269 if (pnp != NULL) { 270 obj = prop_dictionary_get(dict, BTDEVtype); 271 aprint_normal("%s: %s '%s',", pnp, BTDEVtype, 272 prop_string_value(obj)); 273 } 274 275 obj = prop_dictionary_get(dict, BTDEVraddr); 276 raddr = prop_data_value(obj); 277 278 aprint_verbose(" %s %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 279 BTDEVraddr, 280 raddr->b[5], raddr->b[4], raddr->b[3], 281 raddr->b[2], raddr->b[1], raddr->b[0]); 282 283 return UNCONF; 284 } 285
Indexes created Tue Sep 30 07:10:03 GMT 2025