| 1 | /* $NetBSD: bthub.c,v 1.22 2015/05/09 22:23:40 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 1.22 2015/05/09 22:23:40 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 | 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_data_nocopy(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); |
| 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_cstring_nocopy(obj)); |
| 273 | } |
| 274 | |
| 275 | obj = prop_dictionary_get(dict, BTDEVraddr); |
| 276 | raddr = prop_data_data_nocopy(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 | |