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 | |