YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | HIDP implementation for Linux Bluetooth stack (BlueZ). |
| 3 | Copyright (C) 2003-2004 Marcel Holtmann <marcel@holtmann.org> |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License version 2 as |
| 7 | published by the Free Software Foundation; |
| 8 | |
| 9 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 10 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 11 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| 12 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 13 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
| 14 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 15 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 17 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 18 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| 19 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | SOFTWARE IS DISCLAIMED. |
| 21 | */ |
| 22 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/module.h> |
| 24 | |
| 25 | #include <linux/types.h> |
| 26 | #include <linux/errno.h> |
| 27 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/sched.h> |
| 29 | #include <linux/slab.h> |
| 30 | #include <linux/poll.h> |
Rafael J. Wysocki | 8314418 | 2007-07-17 04:03:35 -0700 | [diff] [blame] | 31 | #include <linux/freezer.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <linux/fcntl.h> |
| 33 | #include <linux/skbuff.h> |
| 34 | #include <linux/socket.h> |
| 35 | #include <linux/ioctl.h> |
| 36 | #include <linux/file.h> |
| 37 | #include <linux/init.h> |
| 38 | #include <linux/wait.h> |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 39 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <net/sock.h> |
| 41 | |
| 42 | #include <linux/input.h> |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 43 | #include <linux/hid.h> |
Marcel Holtmann | 364f635 | 2009-08-22 14:15:53 -0700 | [diff] [blame] | 44 | #include <linux/hidraw.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
| 46 | #include <net/bluetooth/bluetooth.h> |
Marcel Holtmann | 0a85b96 | 2006-07-06 13:09:02 +0200 | [diff] [blame] | 47 | #include <net/bluetooth/hci_core.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <net/bluetooth/l2cap.h> |
| 49 | |
| 50 | #include "hidp.h" |
| 51 | |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 52 | #define VERSION "1.2" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
| 54 | static DECLARE_RWSEM(hidp_session_sem); |
| 55 | static LIST_HEAD(hidp_session_list); |
| 56 | |
| 57 | static unsigned char hidp_keycode[256] = { |
| 58 | 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, |
| 59 | 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, |
| 60 | 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, |
| 61 | 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, |
| 62 | 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, |
| 63 | 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, |
| 64 | 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190, |
| 65 | 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113, |
| 66 | 115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0, |
| 67 | 122,123, 90, 91, 85, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 68 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 69 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 70 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 71 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 72 | 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, |
| 73 | 150,158,159,128,136,177,178,176,142,152,173,140 |
| 74 | }; |
| 75 | |
| 76 | static unsigned char hidp_mkeyspat[] = { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 }; |
| 77 | |
| 78 | static struct hidp_session *__hidp_get_session(bdaddr_t *bdaddr) |
| 79 | { |
| 80 | struct hidp_session *session; |
| 81 | struct list_head *p; |
| 82 | |
| 83 | BT_DBG(""); |
| 84 | |
| 85 | list_for_each(p, &hidp_session_list) { |
| 86 | session = list_entry(p, struct hidp_session, list); |
| 87 | if (!bacmp(bdaddr, &session->bdaddr)) |
| 88 | return session; |
| 89 | } |
| 90 | return NULL; |
| 91 | } |
| 92 | |
| 93 | static void __hidp_link_session(struct hidp_session *session) |
| 94 | { |
| 95 | __module_get(THIS_MODULE); |
| 96 | list_add(&session->list, &hidp_session_list); |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 97 | |
| 98 | hci_conn_hold_device(session->conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | static void __hidp_unlink_session(struct hidp_session *session) |
| 102 | { |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 103 | hci_conn_put_device(session->conn); |
| 104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | list_del(&session->list); |
| 106 | module_put(THIS_MODULE); |
| 107 | } |
| 108 | |
| 109 | static void __hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci) |
| 110 | { |
Vasiliy Kulikov | d31dbf6 | 2010-10-30 18:26:31 +0400 | [diff] [blame] | 111 | memset(ci, 0, sizeof(*ci)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | bacpy(&ci->bdaddr, &session->bdaddr); |
| 113 | |
| 114 | ci->flags = session->flags; |
| 115 | ci->state = session->state; |
| 116 | |
| 117 | ci->vendor = 0x0000; |
| 118 | ci->product = 0x0000; |
| 119 | ci->version = 0x0000; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | |
| 121 | if (session->input) { |
| 122 | ci->vendor = session->input->id.vendor; |
| 123 | ci->product = session->input->id.product; |
| 124 | ci->version = session->input->id.version; |
| 125 | if (session->input->name) |
| 126 | strncpy(ci->name, session->input->name, 128); |
| 127 | else |
| 128 | strncpy(ci->name, "HID Boot Device", 128); |
| 129 | } |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 130 | |
| 131 | if (session->hid) { |
| 132 | ci->vendor = session->hid->vendor; |
| 133 | ci->product = session->hid->product; |
| 134 | ci->version = session->hid->version; |
| 135 | strncpy(ci->name, session->hid->name, 128); |
| 136 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | } |
| 138 | |
Andrew Morton | 91f5cca | 2008-02-05 03:07:58 -0800 | [diff] [blame] | 139 | static int hidp_queue_event(struct hidp_session *session, struct input_dev *dev, |
| 140 | unsigned int type, unsigned int code, int value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | unsigned char newleds; |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 143 | struct sk_buff *skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 145 | BT_DBG("session %p type %d code %d value %d", session, type, code, value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | |
| 147 | if (type != EV_LED) |
| 148 | return -1; |
| 149 | |
| 150 | newleds = (!!test_bit(LED_KANA, dev->led) << 3) | |
| 151 | (!!test_bit(LED_COMPOSE, dev->led) << 3) | |
| 152 | (!!test_bit(LED_SCROLLL, dev->led) << 2) | |
| 153 | (!!test_bit(LED_CAPSL, dev->led) << 1) | |
| 154 | (!!test_bit(LED_NUML, dev->led)); |
| 155 | |
| 156 | if (session->leds == newleds) |
| 157 | return 0; |
| 158 | |
| 159 | session->leds = newleds; |
| 160 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 161 | skb = alloc_skb(3, GFP_ATOMIC); |
| 162 | if (!skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | BT_ERR("Can't allocate memory for new frame"); |
| 164 | return -ENOMEM; |
| 165 | } |
| 166 | |
| 167 | *skb_put(skb, 1) = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT; |
| 168 | *skb_put(skb, 1) = 0x01; |
| 169 | *skb_put(skb, 1) = newleds; |
| 170 | |
| 171 | skb_queue_tail(&session->intr_transmit, skb); |
| 172 | |
| 173 | hidp_schedule(session); |
| 174 | |
| 175 | return 0; |
| 176 | } |
| 177 | |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 178 | static int hidp_hidinput_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
| 179 | { |
Marcel Holtmann | 5be3946 | 2007-05-09 09:15:30 +0200 | [diff] [blame] | 180 | struct hid_device *hid = input_get_drvdata(dev); |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 181 | struct hidp_session *session = hid->driver_data; |
| 182 | |
| 183 | return hidp_queue_event(session, dev, type, code, value); |
| 184 | } |
| 185 | |
| 186 | static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
| 187 | { |
Marcel Holtmann | 5be3946 | 2007-05-09 09:15:30 +0200 | [diff] [blame] | 188 | struct hidp_session *session = input_get_drvdata(dev); |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 189 | |
| 190 | return hidp_queue_event(session, dev, type, code, value); |
| 191 | } |
| 192 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb) |
| 194 | { |
| 195 | struct input_dev *dev = session->input; |
| 196 | unsigned char *keys = session->keys; |
| 197 | unsigned char *udata = skb->data + 1; |
| 198 | signed char *sdata = skb->data + 1; |
| 199 | int i, size = skb->len - 1; |
| 200 | |
| 201 | switch (skb->data[0]) { |
| 202 | case 0x01: /* Keyboard report */ |
| 203 | for (i = 0; i < 8; i++) |
| 204 | input_report_key(dev, hidp_keycode[i + 224], (udata[0] >> i) & 1); |
| 205 | |
| 206 | /* If all the key codes have been set to 0x01, it means |
| 207 | * too many keys were pressed at the same time. */ |
| 208 | if (!memcmp(udata + 2, hidp_mkeyspat, 6)) |
| 209 | break; |
| 210 | |
| 211 | for (i = 2; i < 8; i++) { |
| 212 | if (keys[i] > 3 && memscan(udata + 2, keys[i], 6) == udata + 8) { |
| 213 | if (hidp_keycode[keys[i]]) |
| 214 | input_report_key(dev, hidp_keycode[keys[i]], 0); |
| 215 | else |
| 216 | BT_ERR("Unknown key (scancode %#x) released.", keys[i]); |
| 217 | } |
| 218 | |
| 219 | if (udata[i] > 3 && memscan(keys + 2, udata[i], 6) == keys + 8) { |
| 220 | if (hidp_keycode[udata[i]]) |
| 221 | input_report_key(dev, hidp_keycode[udata[i]], 1); |
| 222 | else |
| 223 | BT_ERR("Unknown key (scancode %#x) pressed.", udata[i]); |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | memcpy(keys, udata, 8); |
| 228 | break; |
| 229 | |
| 230 | case 0x02: /* Mouse report */ |
| 231 | input_report_key(dev, BTN_LEFT, sdata[0] & 0x01); |
| 232 | input_report_key(dev, BTN_RIGHT, sdata[0] & 0x02); |
| 233 | input_report_key(dev, BTN_MIDDLE, sdata[0] & 0x04); |
| 234 | input_report_key(dev, BTN_SIDE, sdata[0] & 0x08); |
| 235 | input_report_key(dev, BTN_EXTRA, sdata[0] & 0x10); |
| 236 | |
| 237 | input_report_rel(dev, REL_X, sdata[1]); |
| 238 | input_report_rel(dev, REL_Y, sdata[2]); |
| 239 | |
| 240 | if (size > 3) |
| 241 | input_report_rel(dev, REL_WHEEL, sdata[3]); |
| 242 | break; |
| 243 | } |
| 244 | |
| 245 | input_sync(dev); |
| 246 | } |
| 247 | |
Bastien Nocera | 6bf8268 | 2010-01-20 12:00:42 +0000 | [diff] [blame] | 248 | static int __hidp_send_ctrl_message(struct hidp_session *session, |
| 249 | unsigned char hdr, unsigned char *data, int size) |
| 250 | { |
| 251 | struct sk_buff *skb; |
| 252 | |
| 253 | BT_DBG("session %p data %p size %d", session, data, size); |
| 254 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 255 | skb = alloc_skb(size + 1, GFP_ATOMIC); |
| 256 | if (!skb) { |
Bastien Nocera | 6bf8268 | 2010-01-20 12:00:42 +0000 | [diff] [blame] | 257 | BT_ERR("Can't allocate memory for new frame"); |
| 258 | return -ENOMEM; |
| 259 | } |
| 260 | |
| 261 | *skb_put(skb, 1) = hdr; |
| 262 | if (data && size > 0) |
| 263 | memcpy(skb_put(skb, size), data, size); |
| 264 | |
| 265 | skb_queue_tail(&session->ctrl_transmit, skb); |
| 266 | |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | static inline int hidp_send_ctrl_message(struct hidp_session *session, |
| 271 | unsigned char hdr, unsigned char *data, int size) |
| 272 | { |
| 273 | int err; |
| 274 | |
| 275 | err = __hidp_send_ctrl_message(session, hdr, data, size); |
| 276 | |
| 277 | hidp_schedule(session); |
| 278 | |
| 279 | return err; |
| 280 | } |
| 281 | |
Andrew Morton | 91f5cca | 2008-02-05 03:07:58 -0800 | [diff] [blame] | 282 | static int hidp_queue_report(struct hidp_session *session, |
| 283 | unsigned char *data, int size) |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 284 | { |
| 285 | struct sk_buff *skb; |
| 286 | |
Dave Young | 6792b5e | 2007-10-20 14:15:39 +0200 | [diff] [blame] | 287 | BT_DBG("session %p hid %p data %p size %d", session, session->hid, data, size); |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 288 | |
Andrei Emeltchenko | 5a08ecc | 2011-01-11 17:20:20 +0200 | [diff] [blame] | 289 | skb = alloc_skb(size + 1, GFP_ATOMIC); |
| 290 | if (!skb) { |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 291 | BT_ERR("Can't allocate memory for new frame"); |
| 292 | return -ENOMEM; |
| 293 | } |
| 294 | |
| 295 | *skb_put(skb, 1) = 0xa2; |
| 296 | if (size > 0) |
| 297 | memcpy(skb_put(skb, size), data, size); |
| 298 | |
| 299 | skb_queue_tail(&session->intr_transmit, skb); |
| 300 | |
| 301 | hidp_schedule(session); |
| 302 | |
| 303 | return 0; |
| 304 | } |
| 305 | |
| 306 | static int hidp_send_report(struct hidp_session *session, struct hid_report *report) |
| 307 | { |
| 308 | unsigned char buf[32]; |
| 309 | int rsize; |
| 310 | |
| 311 | rsize = ((report->size - 1) >> 3) + 1 + (report->id > 0); |
| 312 | if (rsize > sizeof(buf)) |
| 313 | return -EIO; |
| 314 | |
| 315 | hid_output_report(report, buf); |
| 316 | |
| 317 | return hidp_queue_report(session, buf, rsize); |
| 318 | } |
| 319 | |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 320 | static int hidp_get_raw_report(struct hid_device *hid, |
| 321 | unsigned char report_number, |
| 322 | unsigned char *data, size_t count, |
Jiri Kosina | d4bfa03 | 2010-01-29 15:03:36 +0100 | [diff] [blame] | 323 | unsigned char report_type) |
Jiri Kosina | 2da3193 | 2009-11-26 16:20:56 +0100 | [diff] [blame] | 324 | { |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 325 | struct hidp_session *session = hid->driver_data; |
| 326 | struct sk_buff *skb; |
| 327 | size_t len; |
| 328 | int numbered_reports = hid->report_enum[report_type].numbered; |
| 329 | |
Jiri Kosina | d4bfa03 | 2010-01-29 15:03:36 +0100 | [diff] [blame] | 330 | switch (report_type) { |
| 331 | case HID_FEATURE_REPORT: |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 332 | report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_FEATURE; |
| 333 | break; |
| 334 | case HID_INPUT_REPORT: |
| 335 | report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_INPUT; |
Jiri Kosina | d4bfa03 | 2010-01-29 15:03:36 +0100 | [diff] [blame] | 336 | break; |
| 337 | case HID_OUTPUT_REPORT: |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 338 | report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_OUPUT; |
Jiri Kosina | d4bfa03 | 2010-01-29 15:03:36 +0100 | [diff] [blame] | 339 | break; |
| 340 | default: |
| 341 | return -EINVAL; |
| 342 | } |
| 343 | |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 344 | if (mutex_lock_interruptible(&session->report_mutex)) |
| 345 | return -ERESTARTSYS; |
| 346 | |
| 347 | /* Set up our wait, and send the report request to the device. */ |
| 348 | session->waiting_report_type = report_type & HIDP_DATA_RTYPE_MASK; |
| 349 | session->waiting_report_number = numbered_reports ? report_number : -1; |
| 350 | set_bit(HIDP_WAITING_FOR_RETURN, &session->flags); |
| 351 | data[0] = report_number; |
| 352 | if (hidp_send_ctrl_message(hid->driver_data, report_type, data, 1)) |
| 353 | goto err_eio; |
| 354 | |
| 355 | /* Wait for the return of the report. The returned report |
| 356 | gets put in session->report_return. */ |
| 357 | while (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags)) { |
| 358 | int res; |
| 359 | |
| 360 | res = wait_event_interruptible_timeout(session->report_queue, |
| 361 | !test_bit(HIDP_WAITING_FOR_RETURN, &session->flags), |
| 362 | 5*HZ); |
| 363 | if (res == 0) { |
| 364 | /* timeout */ |
| 365 | goto err_eio; |
| 366 | } |
| 367 | if (res < 0) { |
| 368 | /* signal */ |
| 369 | goto err_restartsys; |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | skb = session->report_return; |
| 374 | if (skb) { |
| 375 | len = skb->len < count ? skb->len : count; |
| 376 | memcpy(data, skb->data, len); |
| 377 | |
| 378 | kfree_skb(skb); |
| 379 | session->report_return = NULL; |
| 380 | } else { |
| 381 | /* Device returned a HANDSHAKE, indicating protocol error. */ |
| 382 | len = -EIO; |
| 383 | } |
| 384 | |
| 385 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); |
| 386 | mutex_unlock(&session->report_mutex); |
| 387 | |
| 388 | return len; |
| 389 | |
| 390 | err_restartsys: |
| 391 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); |
| 392 | mutex_unlock(&session->report_mutex); |
| 393 | return -ERESTARTSYS; |
| 394 | err_eio: |
| 395 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); |
| 396 | mutex_unlock(&session->report_mutex); |
| 397 | return -EIO; |
| 398 | } |
| 399 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | static int hidp_output_raw_report(struct hid_device *hid, unsigned char *data, size_t count, |
Jiri Kosina | 2da3193 | 2009-11-26 16:20:56 +0100 | [diff] [blame] | 401 | unsigned char report_type) |
| 402 | { |
Alan Ott | 0825411 | 2011-01-18 03:04:38 -0500 | [diff] [blame] | 403 | struct hidp_session *session = hid->driver_data; |
| 404 | int ret; |
| 405 | |
Jiri Kosina | d4bfa03 | 2010-01-29 15:03:36 +0100 | [diff] [blame] | 406 | switch (report_type) { |
| 407 | case HID_FEATURE_REPORT: |
| 408 | report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_FEATURE; |
| 409 | break; |
| 410 | case HID_OUTPUT_REPORT: |
Antonio Ospite | 97e1efb | 2011-02-20 18:26:46 +0100 | [diff] [blame] | 411 | report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_OUPUT; |
Jiri Kosina | d4bfa03 | 2010-01-29 15:03:36 +0100 | [diff] [blame] | 412 | break; |
| 413 | default: |
| 414 | return -EINVAL; |
| 415 | } |
| 416 | |
Alan Ott | 0825411 | 2011-01-18 03:04:38 -0500 | [diff] [blame] | 417 | if (mutex_lock_interruptible(&session->report_mutex)) |
| 418 | return -ERESTARTSYS; |
| 419 | |
| 420 | /* Set up our wait, and send the report request to the device. */ |
| 421 | set_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); |
Jiri Kosina | d4bfa03 | 2010-01-29 15:03:36 +0100 | [diff] [blame] | 422 | if (hidp_send_ctrl_message(hid->driver_data, report_type, |
Alan Ott | 0825411 | 2011-01-18 03:04:38 -0500 | [diff] [blame] | 423 | data, count)) { |
| 424 | ret = -ENOMEM; |
| 425 | goto err; |
| 426 | } |
| 427 | |
| 428 | /* Wait for the ACK from the device. */ |
| 429 | while (test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags)) { |
| 430 | int res; |
| 431 | |
| 432 | res = wait_event_interruptible_timeout(session->report_queue, |
| 433 | !test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags), |
| 434 | 10*HZ); |
| 435 | if (res == 0) { |
| 436 | /* timeout */ |
| 437 | ret = -EIO; |
| 438 | goto err; |
| 439 | } |
| 440 | if (res < 0) { |
| 441 | /* signal */ |
| 442 | ret = -ERESTARTSYS; |
| 443 | goto err; |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | if (!session->output_report_success) { |
| 448 | ret = -EIO; |
| 449 | goto err; |
| 450 | } |
| 451 | |
| 452 | ret = count; |
| 453 | |
| 454 | err: |
| 455 | clear_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); |
| 456 | mutex_unlock(&session->report_mutex); |
| 457 | return ret; |
Jiri Kosina | 2da3193 | 2009-11-26 16:20:56 +0100 | [diff] [blame] | 458 | } |
| 459 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | static void hidp_idle_timeout(unsigned long arg) |
| 461 | { |
| 462 | struct hidp_session *session = (struct hidp_session *) arg; |
| 463 | |
| 464 | atomic_inc(&session->terminate); |
| 465 | hidp_schedule(session); |
| 466 | } |
| 467 | |
Andrew Morton | 91f5cca | 2008-02-05 03:07:58 -0800 | [diff] [blame] | 468 | static void hidp_set_timer(struct hidp_session *session) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | { |
| 470 | if (session->idle_to > 0) |
| 471 | mod_timer(&session->timer, jiffies + HZ * session->idle_to); |
| 472 | } |
| 473 | |
| 474 | static inline void hidp_del_timer(struct hidp_session *session) |
| 475 | { |
| 476 | if (session->idle_to > 0) |
| 477 | del_timer(&session->timer); |
| 478 | } |
| 479 | |
Andrew Morton | 91f5cca | 2008-02-05 03:07:58 -0800 | [diff] [blame] | 480 | static void hidp_process_handshake(struct hidp_session *session, |
| 481 | unsigned char param) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | { |
| 483 | BT_DBG("session %p param 0x%02x", session, param); |
Alan Ott | 0825411 | 2011-01-18 03:04:38 -0500 | [diff] [blame] | 484 | session->output_report_success = 0; /* default condition */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | |
| 486 | switch (param) { |
| 487 | case HIDP_HSHK_SUCCESSFUL: |
| 488 | /* FIXME: Call into SET_ GET_ handlers here */ |
Alan Ott | 0825411 | 2011-01-18 03:04:38 -0500 | [diff] [blame] | 489 | session->output_report_success = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | break; |
| 491 | |
| 492 | case HIDP_HSHK_NOT_READY: |
| 493 | case HIDP_HSHK_ERR_INVALID_REPORT_ID: |
| 494 | case HIDP_HSHK_ERR_UNSUPPORTED_REQUEST: |
| 495 | case HIDP_HSHK_ERR_INVALID_PARAMETER: |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 496 | if (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags)) { |
| 497 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); |
| 498 | wake_up_interruptible(&session->report_queue); |
| 499 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | /* FIXME: Call into SET_ GET_ handlers here */ |
| 501 | break; |
| 502 | |
| 503 | case HIDP_HSHK_ERR_UNKNOWN: |
| 504 | break; |
| 505 | |
| 506 | case HIDP_HSHK_ERR_FATAL: |
| 507 | /* Device requests a reboot, as this is the only way this error |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 508 | * can be recovered. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | __hidp_send_ctrl_message(session, |
| 510 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_SOFT_RESET, NULL, 0); |
| 511 | break; |
| 512 | |
| 513 | default: |
| 514 | __hidp_send_ctrl_message(session, |
| 515 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); |
| 516 | break; |
| 517 | } |
Alan Ott | 0825411 | 2011-01-18 03:04:38 -0500 | [diff] [blame] | 518 | |
| 519 | /* Wake up the waiting thread. */ |
| 520 | if (test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags)) { |
| 521 | clear_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); |
| 522 | wake_up_interruptible(&session->report_queue); |
| 523 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | } |
| 525 | |
Andrew Morton | 91f5cca | 2008-02-05 03:07:58 -0800 | [diff] [blame] | 526 | static void hidp_process_hid_control(struct hidp_session *session, |
| 527 | unsigned char param) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | { |
| 529 | BT_DBG("session %p param 0x%02x", session, param); |
| 530 | |
Dave Young | eff001e | 2008-02-05 03:07:14 -0800 | [diff] [blame] | 531 | if (param == HIDP_CTRL_VIRTUAL_CABLE_UNPLUG) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | /* Flush the transmit queues */ |
| 533 | skb_queue_purge(&session->ctrl_transmit); |
| 534 | skb_queue_purge(&session->intr_transmit); |
| 535 | |
| 536 | /* Kill session thread */ |
| 537 | atomic_inc(&session->terminate); |
Vikram Kandukuri | 981b141 | 2009-07-01 11:39:58 +0530 | [diff] [blame] | 538 | hidp_schedule(session); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | } |
| 540 | } |
| 541 | |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 542 | /* Returns true if the passed-in skb should be freed by the caller. */ |
| 543 | static int hidp_process_data(struct hidp_session *session, struct sk_buff *skb, |
Andrew Morton | 91f5cca | 2008-02-05 03:07:58 -0800 | [diff] [blame] | 544 | unsigned char param) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | { |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 546 | int done_with_skb = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | BT_DBG("session %p skb %p len %d param 0x%02x", session, skb, skb->len, param); |
| 548 | |
| 549 | switch (param) { |
| 550 | case HIDP_DATA_RTYPE_INPUT: |
| 551 | hidp_set_timer(session); |
| 552 | |
| 553 | if (session->input) |
| 554 | hidp_input_report(session, skb); |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 555 | |
| 556 | if (session->hid) |
| 557 | hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | break; |
| 559 | |
| 560 | case HIDP_DATA_RTYPE_OTHER: |
| 561 | case HIDP_DATA_RTYPE_OUPUT: |
| 562 | case HIDP_DATA_RTYPE_FEATURE: |
| 563 | break; |
| 564 | |
| 565 | default: |
| 566 | __hidp_send_ctrl_message(session, |
| 567 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); |
| 568 | } |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 569 | |
| 570 | if (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags) && |
| 571 | param == session->waiting_report_type) { |
| 572 | if (session->waiting_report_number < 0 || |
| 573 | session->waiting_report_number == skb->data[0]) { |
| 574 | /* hidp_get_raw_report() is waiting on this report. */ |
| 575 | session->report_return = skb; |
| 576 | done_with_skb = 0; |
| 577 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); |
| 578 | wake_up_interruptible(&session->report_queue); |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | return done_with_skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | } |
| 584 | |
Andrew Morton | 91f5cca | 2008-02-05 03:07:58 -0800 | [diff] [blame] | 585 | static void hidp_recv_ctrl_frame(struct hidp_session *session, |
| 586 | struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | { |
| 588 | unsigned char hdr, type, param; |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 589 | int free_skb = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | |
| 591 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); |
| 592 | |
| 593 | hdr = skb->data[0]; |
| 594 | skb_pull(skb, 1); |
| 595 | |
| 596 | type = hdr & HIDP_HEADER_TRANS_MASK; |
| 597 | param = hdr & HIDP_HEADER_PARAM_MASK; |
| 598 | |
| 599 | switch (type) { |
| 600 | case HIDP_TRANS_HANDSHAKE: |
| 601 | hidp_process_handshake(session, param); |
| 602 | break; |
| 603 | |
| 604 | case HIDP_TRANS_HID_CONTROL: |
| 605 | hidp_process_hid_control(session, param); |
| 606 | break; |
| 607 | |
| 608 | case HIDP_TRANS_DATA: |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 609 | free_skb = hidp_process_data(session, skb, param); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | break; |
| 611 | |
| 612 | default: |
| 613 | __hidp_send_ctrl_message(session, |
| 614 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_UNSUPPORTED_REQUEST, NULL, 0); |
| 615 | break; |
| 616 | } |
| 617 | |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 618 | if (free_skb) |
| 619 | kfree_skb(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | } |
| 621 | |
Andrew Morton | 91f5cca | 2008-02-05 03:07:58 -0800 | [diff] [blame] | 622 | static void hidp_recv_intr_frame(struct hidp_session *session, |
| 623 | struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | { |
| 625 | unsigned char hdr; |
| 626 | |
| 627 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); |
| 628 | |
| 629 | hdr = skb->data[0]; |
| 630 | skb_pull(skb, 1); |
| 631 | |
| 632 | if (hdr == (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) { |
| 633 | hidp_set_timer(session); |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 634 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | if (session->input) |
| 636 | hidp_input_report(session, skb); |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 637 | |
| 638 | if (session->hid) { |
| 639 | hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 1); |
| 640 | BT_DBG("report len %d", skb->len); |
| 641 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | } else { |
| 643 | BT_DBG("Unsupported protocol header 0x%02x", hdr); |
| 644 | } |
| 645 | |
| 646 | kfree_skb(skb); |
| 647 | } |
| 648 | |
| 649 | static int hidp_send_frame(struct socket *sock, unsigned char *data, int len) |
| 650 | { |
| 651 | struct kvec iv = { data, len }; |
| 652 | struct msghdr msg; |
| 653 | |
| 654 | BT_DBG("sock %p data %p len %d", sock, data, len); |
| 655 | |
| 656 | if (!len) |
| 657 | return 0; |
| 658 | |
| 659 | memset(&msg, 0, sizeof(msg)); |
| 660 | |
| 661 | return kernel_sendmsg(sock, &msg, &iv, 1, len); |
| 662 | } |
| 663 | |
David S. Miller | b03efcf | 2005-07-08 14:57:23 -0700 | [diff] [blame] | 664 | static void hidp_process_transmit(struct hidp_session *session) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | { |
| 666 | struct sk_buff *skb; |
| 667 | |
| 668 | BT_DBG("session %p", session); |
| 669 | |
| 670 | while ((skb = skb_dequeue(&session->ctrl_transmit))) { |
| 671 | if (hidp_send_frame(session->ctrl_sock, skb->data, skb->len) < 0) { |
| 672 | skb_queue_head(&session->ctrl_transmit, skb); |
| 673 | break; |
| 674 | } |
| 675 | |
| 676 | hidp_set_timer(session); |
| 677 | kfree_skb(skb); |
| 678 | } |
| 679 | |
| 680 | while ((skb = skb_dequeue(&session->intr_transmit))) { |
| 681 | if (hidp_send_frame(session->intr_sock, skb->data, skb->len) < 0) { |
| 682 | skb_queue_head(&session->intr_transmit, skb); |
| 683 | break; |
| 684 | } |
| 685 | |
| 686 | hidp_set_timer(session); |
| 687 | kfree_skb(skb); |
| 688 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | } |
| 690 | |
| 691 | static int hidp_session(void *arg) |
| 692 | { |
| 693 | struct hidp_session *session = arg; |
| 694 | struct sock *ctrl_sk = session->ctrl_sock->sk; |
| 695 | struct sock *intr_sk = session->intr_sock->sk; |
| 696 | struct sk_buff *skb; |
| 697 | int vendor = 0x0000, product = 0x0000; |
| 698 | wait_queue_t ctrl_wait, intr_wait; |
| 699 | |
| 700 | BT_DBG("session %p", session); |
| 701 | |
| 702 | if (session->input) { |
| 703 | vendor = session->input->id.vendor; |
| 704 | product = session->input->id.product; |
| 705 | } |
| 706 | |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 707 | if (session->hid) { |
| 708 | vendor = session->hid->vendor; |
| 709 | product = session->hid->product; |
| 710 | } |
| 711 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | daemonize("khidpd_%04x%04x", vendor, product); |
| 713 | set_user_nice(current, -15); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | |
| 715 | init_waitqueue_entry(&ctrl_wait, current); |
| 716 | init_waitqueue_entry(&intr_wait, current); |
Eric Dumazet | aa39514 | 2010-04-20 13:03:51 +0000 | [diff] [blame] | 717 | add_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait); |
| 718 | add_wait_queue(sk_sleep(intr_sk), &intr_wait); |
Alan Ott | 0f69dca | 2011-01-18 03:04:37 -0500 | [diff] [blame] | 719 | session->waiting_for_startup = 0; |
| 720 | wake_up_interruptible(&session->startup_queue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | while (!atomic_read(&session->terminate)) { |
| 722 | set_current_state(TASK_INTERRUPTIBLE); |
| 723 | |
| 724 | if (ctrl_sk->sk_state != BT_CONNECTED || intr_sk->sk_state != BT_CONNECTED) |
| 725 | break; |
| 726 | |
| 727 | while ((skb = skb_dequeue(&ctrl_sk->sk_receive_queue))) { |
| 728 | skb_orphan(skb); |
| 729 | hidp_recv_ctrl_frame(session, skb); |
| 730 | } |
| 731 | |
| 732 | while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) { |
| 733 | skb_orphan(skb); |
| 734 | hidp_recv_intr_frame(session, skb); |
| 735 | } |
| 736 | |
| 737 | hidp_process_transmit(session); |
| 738 | |
| 739 | schedule(); |
| 740 | } |
| 741 | set_current_state(TASK_RUNNING); |
Eric Dumazet | aa39514 | 2010-04-20 13:03:51 +0000 | [diff] [blame] | 742 | remove_wait_queue(sk_sleep(intr_sk), &intr_wait); |
| 743 | remove_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | |
| 745 | down_write(&hidp_session_sem); |
| 746 | |
| 747 | hidp_del_timer(session); |
| 748 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | if (session->input) { |
| 750 | input_unregister_device(session->input); |
Dmitry Torokhov | 34abf91 | 2005-09-15 02:01:40 -0500 | [diff] [blame] | 751 | session->input = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | } |
| 753 | |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 754 | if (session->hid) { |
Jiri Slaby | 85cdaf5 | 2008-05-16 11:49:15 +0200 | [diff] [blame] | 755 | hid_destroy_device(session->hid); |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 756 | session->hid = NULL; |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 757 | } |
| 758 | |
Marcel Holtmann | ec8dab3 | 2008-07-14 20:13:53 +0200 | [diff] [blame] | 759 | /* Wakeup user-space polling for socket errors */ |
| 760 | session->intr_sock->sk->sk_err = EUNATCH; |
| 761 | session->ctrl_sock->sk->sk_err = EUNATCH; |
| 762 | |
| 763 | hidp_schedule(session); |
| 764 | |
David Woodhouse | 1c39858 | 2007-07-07 14:58:39 -0400 | [diff] [blame] | 765 | fput(session->intr_sock->file); |
| 766 | |
Eric Dumazet | aa39514 | 2010-04-20 13:03:51 +0000 | [diff] [blame] | 767 | wait_event_timeout(*(sk_sleep(ctrl_sk)), |
David Woodhouse | 1c39858 | 2007-07-07 14:58:39 -0400 | [diff] [blame] | 768 | (ctrl_sk->sk_state == BT_CLOSED), msecs_to_jiffies(500)); |
| 769 | |
| 770 | fput(session->ctrl_sock->file); |
| 771 | |
| 772 | __hidp_unlink_session(session); |
| 773 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | up_write(&hidp_session_sem); |
| 775 | |
| 776 | kfree(session); |
| 777 | return 0; |
| 778 | } |
| 779 | |
Marcel Holtmann | 0a85b96 | 2006-07-06 13:09:02 +0200 | [diff] [blame] | 780 | static struct device *hidp_get_device(struct hidp_session *session) |
| 781 | { |
| 782 | bdaddr_t *src = &bt_sk(session->ctrl_sock->sk)->src; |
| 783 | bdaddr_t *dst = &bt_sk(session->ctrl_sock->sk)->dst; |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 784 | struct device *device = NULL; |
Marcel Holtmann | 0a85b96 | 2006-07-06 13:09:02 +0200 | [diff] [blame] | 785 | struct hci_dev *hdev; |
Marcel Holtmann | 0a85b96 | 2006-07-06 13:09:02 +0200 | [diff] [blame] | 786 | |
| 787 | hdev = hci_get_route(dst, src); |
| 788 | if (!hdev) |
| 789 | return NULL; |
| 790 | |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 791 | session->conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); |
| 792 | if (session->conn) |
| 793 | device = &session->conn->dev; |
Marcel Holtmann | 0a85b96 | 2006-07-06 13:09:02 +0200 | [diff] [blame] | 794 | |
| 795 | hci_dev_put(hdev); |
| 796 | |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 797 | return device; |
Marcel Holtmann | 0a85b96 | 2006-07-06 13:09:02 +0200 | [diff] [blame] | 798 | } |
| 799 | |
Andrew Morton | 91f5cca | 2008-02-05 03:07:58 -0800 | [diff] [blame] | 800 | static int hidp_setup_input(struct hidp_session *session, |
| 801 | struct hidp_connadd_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | { |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 803 | struct input_dev *input; |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 804 | int err, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 806 | input = input_allocate_device(); |
| 807 | if (!input) |
| 808 | return -ENOMEM; |
| 809 | |
| 810 | session->input = input; |
| 811 | |
Marcel Holtmann | 5be3946 | 2007-05-09 09:15:30 +0200 | [diff] [blame] | 812 | input_set_drvdata(input, session); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | |
Dmitry Torokhov | 34abf91 | 2005-09-15 02:01:40 -0500 | [diff] [blame] | 814 | input->name = "Bluetooth HID Boot Protocol Device"; |
| 815 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | input->id.bustype = BUS_BLUETOOTH; |
| 817 | input->id.vendor = req->vendor; |
| 818 | input->id.product = req->product; |
| 819 | input->id.version = req->version; |
| 820 | |
| 821 | if (req->subclass & 0x40) { |
| 822 | set_bit(EV_KEY, input->evbit); |
| 823 | set_bit(EV_LED, input->evbit); |
| 824 | set_bit(EV_REP, input->evbit); |
| 825 | |
| 826 | set_bit(LED_NUML, input->ledbit); |
| 827 | set_bit(LED_CAPSL, input->ledbit); |
| 828 | set_bit(LED_SCROLLL, input->ledbit); |
| 829 | set_bit(LED_COMPOSE, input->ledbit); |
| 830 | set_bit(LED_KANA, input->ledbit); |
| 831 | |
| 832 | for (i = 0; i < sizeof(hidp_keycode); i++) |
| 833 | set_bit(hidp_keycode[i], input->keybit); |
| 834 | clear_bit(0, input->keybit); |
| 835 | } |
| 836 | |
| 837 | if (req->subclass & 0x80) { |
Jiri Slaby | 7b19ada | 2007-10-18 23:40:32 -0700 | [diff] [blame] | 838 | input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
| 839 | input->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | |
| 840 | BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE); |
| 841 | input->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); |
| 842 | input->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) | |
| 843 | BIT_MASK(BTN_EXTRA); |
| 844 | input->relbit[0] |= BIT_MASK(REL_WHEEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | } |
| 846 | |
Marcel Holtmann | 5be3946 | 2007-05-09 09:15:30 +0200 | [diff] [blame] | 847 | input->dev.parent = hidp_get_device(session); |
Marcel Holtmann | 0a85b96 | 2006-07-06 13:09:02 +0200 | [diff] [blame] | 848 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | input->event = hidp_input_event; |
| 850 | |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 851 | err = input_register_device(input); |
| 852 | if (err < 0) { |
| 853 | hci_conn_put_device(session->conn); |
| 854 | return err; |
| 855 | } |
| 856 | |
| 857 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | } |
| 859 | |
Marcel Holtmann | f5ffd46 | 2007-02-17 23:58:53 +0100 | [diff] [blame] | 860 | static int hidp_open(struct hid_device *hid) |
| 861 | { |
| 862 | return 0; |
| 863 | } |
| 864 | |
| 865 | static void hidp_close(struct hid_device *hid) |
| 866 | { |
| 867 | } |
| 868 | |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 869 | static int hidp_parse(struct hid_device *hid) |
| 870 | { |
| 871 | struct hidp_session *session = hid->driver_data; |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 872 | |
Michael Poole | 15c697c | 2010-02-05 12:23:43 -0500 | [diff] [blame] | 873 | return hid_parse_report(session->hid, session->rd_data, |
| 874 | session->rd_size); |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 875 | } |
| 876 | |
| 877 | static int hidp_start(struct hid_device *hid) |
| 878 | { |
| 879 | struct hidp_session *session = hid->driver_data; |
| 880 | struct hid_report *report; |
| 881 | |
| 882 | list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT]. |
| 883 | report_list, list) |
| 884 | hidp_send_report(session, report); |
| 885 | |
| 886 | list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT]. |
| 887 | report_list, list) |
| 888 | hidp_send_report(session, report); |
| 889 | |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 890 | return 0; |
| 891 | } |
| 892 | |
| 893 | static void hidp_stop(struct hid_device *hid) |
| 894 | { |
| 895 | struct hidp_session *session = hid->driver_data; |
| 896 | |
| 897 | skb_queue_purge(&session->ctrl_transmit); |
| 898 | skb_queue_purge(&session->intr_transmit); |
| 899 | |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 900 | hid->claimed = 0; |
| 901 | } |
| 902 | |
| 903 | static struct hid_ll_driver hidp_hid_driver = { |
| 904 | .parse = hidp_parse, |
| 905 | .start = hidp_start, |
| 906 | .stop = hidp_stop, |
| 907 | .open = hidp_open, |
| 908 | .close = hidp_close, |
| 909 | .hidinput_input_event = hidp_hidinput_event, |
| 910 | }; |
| 911 | |
Alan Ott | 0f69dca | 2011-01-18 03:04:37 -0500 | [diff] [blame] | 912 | /* This function sets up the hid device. It does not add it |
| 913 | to the HID system. That is done in hidp_add_connection(). */ |
Jiri Slaby | 85cdaf5 | 2008-05-16 11:49:15 +0200 | [diff] [blame] | 914 | static int hidp_setup_hid(struct hidp_session *session, |
Andrew Morton | 91f5cca | 2008-02-05 03:07:58 -0800 | [diff] [blame] | 915 | struct hidp_connadd_req *req) |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 916 | { |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 917 | struct hid_device *hid; |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 918 | int err; |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 919 | |
Michael Poole | 15c697c | 2010-02-05 12:23:43 -0500 | [diff] [blame] | 920 | session->rd_data = kzalloc(req->rd_size, GFP_KERNEL); |
| 921 | if (!session->rd_data) |
| 922 | return -ENOMEM; |
| 923 | |
| 924 | if (copy_from_user(session->rd_data, req->rd_data, req->rd_size)) { |
| 925 | err = -EFAULT; |
| 926 | goto fault; |
| 927 | } |
| 928 | session->rd_size = req->rd_size; |
| 929 | |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 930 | hid = hid_allocate_device(); |
Michael Poole | 15c697c | 2010-02-05 12:23:43 -0500 | [diff] [blame] | 931 | if (IS_ERR(hid)) { |
| 932 | err = PTR_ERR(hid); |
| 933 | goto fault; |
| 934 | } |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 935 | |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 936 | session->hid = hid; |
Michael Poole | 15c697c | 2010-02-05 12:23:43 -0500 | [diff] [blame] | 937 | |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 938 | hid->driver_data = session; |
| 939 | |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 940 | hid->bus = BUS_BLUETOOTH; |
| 941 | hid->vendor = req->vendor; |
| 942 | hid->product = req->product; |
| 943 | hid->version = req->version; |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 944 | hid->country = req->country; |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 945 | |
| 946 | strncpy(hid->name, req->name, 128); |
Gustavo F. Padovan | d6b2eb2 | 2010-09-03 18:29:46 -0300 | [diff] [blame] | 947 | strncpy(hid->phys, batostr(&bt_sk(session->ctrl_sock->sk)->src), 64); |
| 948 | strncpy(hid->uniq, batostr(&bt_sk(session->ctrl_sock->sk)->dst), 64); |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 949 | |
Jiri Slaby | 85cdaf5 | 2008-05-16 11:49:15 +0200 | [diff] [blame] | 950 | hid->dev.parent = hidp_get_device(session); |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 951 | hid->ll_driver = &hidp_hid_driver; |
Jiri Slaby | 85cdaf5 | 2008-05-16 11:49:15 +0200 | [diff] [blame] | 952 | |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 953 | hid->hid_get_raw_report = hidp_get_raw_report; |
Jiri Kosina | 2da3193 | 2009-11-26 16:20:56 +0100 | [diff] [blame] | 954 | hid->hid_output_raw_report = hidp_output_raw_report; |
| 955 | |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 956 | return 0; |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 957 | |
Michael Poole | 15c697c | 2010-02-05 12:23:43 -0500 | [diff] [blame] | 958 | fault: |
| 959 | kfree(session->rd_data); |
| 960 | session->rd_data = NULL; |
| 961 | |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 962 | return err; |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 963 | } |
| 964 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock) |
| 966 | { |
| 967 | struct hidp_session *session, *s; |
| 968 | int err; |
| 969 | |
| 970 | BT_DBG(""); |
| 971 | |
| 972 | if (bacmp(&bt_sk(ctrl_sock->sk)->src, &bt_sk(intr_sock->sk)->src) || |
| 973 | bacmp(&bt_sk(ctrl_sock->sk)->dst, &bt_sk(intr_sock->sk)->dst)) |
| 974 | return -ENOTUNIQ; |
| 975 | |
Marcel Holtmann | 25ea6db | 2006-07-06 15:40:09 +0200 | [diff] [blame] | 976 | session = kzalloc(sizeof(struct hidp_session), GFP_KERNEL); |
Dmitry Torokhov | 34abf91 | 2005-09-15 02:01:40 -0500 | [diff] [blame] | 977 | if (!session) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 980 | BT_DBG("rd_data %p rd_size %d", req->rd_data, req->rd_size); |
| 981 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | down_write(&hidp_session_sem); |
| 983 | |
| 984 | s = __hidp_get_session(&bt_sk(ctrl_sock->sk)->dst); |
| 985 | if (s && s->state == BT_CONNECTED) { |
| 986 | err = -EEXIST; |
| 987 | goto failed; |
| 988 | } |
| 989 | |
| 990 | bacpy(&session->bdaddr, &bt_sk(ctrl_sock->sk)->dst); |
| 991 | |
| 992 | session->ctrl_mtu = min_t(uint, l2cap_pi(ctrl_sock->sk)->omtu, l2cap_pi(ctrl_sock->sk)->imtu); |
| 993 | session->intr_mtu = min_t(uint, l2cap_pi(intr_sock->sk)->omtu, l2cap_pi(intr_sock->sk)->imtu); |
| 994 | |
| 995 | BT_DBG("ctrl mtu %d intr mtu %d", session->ctrl_mtu, session->intr_mtu); |
| 996 | |
| 997 | session->ctrl_sock = ctrl_sock; |
| 998 | session->intr_sock = intr_sock; |
| 999 | session->state = BT_CONNECTED; |
| 1000 | |
Pavel Emelyanov | b24b8a2 | 2008-01-23 21:20:07 -0800 | [diff] [blame] | 1001 | setup_timer(&session->timer, hidp_idle_timeout, (unsigned long)session); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1002 | |
| 1003 | skb_queue_head_init(&session->ctrl_transmit); |
| 1004 | skb_queue_head_init(&session->intr_transmit); |
| 1005 | |
Alan Ott | 0ff1731 | 2011-01-18 03:04:40 -0500 | [diff] [blame] | 1006 | mutex_init(&session->report_mutex); |
| 1007 | init_waitqueue_head(&session->report_queue); |
Alan Ott | 0f69dca | 2011-01-18 03:04:37 -0500 | [diff] [blame] | 1008 | init_waitqueue_head(&session->startup_queue); |
| 1009 | session->waiting_for_startup = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID); |
| 1011 | session->idle_to = req->idle_to; |
| 1012 | |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 1013 | if (req->rd_size > 0) { |
Jiri Slaby | 85cdaf5 | 2008-05-16 11:49:15 +0200 | [diff] [blame] | 1014 | err = hidp_setup_hid(session, req); |
Jiri Slaby | d458a9d | 2008-05-16 11:49:20 +0200 | [diff] [blame] | 1015 | if (err && err != -ENODEV) |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 1016 | goto purge; |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 1017 | } |
| 1018 | |
| 1019 | if (!session->hid) { |
| 1020 | err = hidp_setup_input(session, req); |
| 1021 | if (err < 0) |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 1022 | goto purge; |
Jiri Slaby | 85cdaf5 | 2008-05-16 11:49:15 +0200 | [diff] [blame] | 1023 | } |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 1024 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | __hidp_link_session(session); |
| 1026 | |
| 1027 | hidp_set_timer(session); |
| 1028 | |
| 1029 | err = kernel_thread(hidp_session, session, CLONE_KERNEL); |
| 1030 | if (err < 0) |
| 1031 | goto unlink; |
Alan Ott | 0f69dca | 2011-01-18 03:04:37 -0500 | [diff] [blame] | 1032 | while (session->waiting_for_startup) { |
| 1033 | wait_event_interruptible(session->startup_queue, |
| 1034 | !session->waiting_for_startup); |
| 1035 | } |
| 1036 | |
| 1037 | err = hid_add_device(session->hid); |
| 1038 | if (err < 0) |
| 1039 | goto err_add_device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | |
| 1041 | if (session->input) { |
| 1042 | hidp_send_ctrl_message(session, |
| 1043 | HIDP_TRANS_SET_PROTOCOL | HIDP_PROTO_BOOT, NULL, 0); |
| 1044 | session->flags |= (1 << HIDP_BOOT_PROTOCOL_MODE); |
| 1045 | |
| 1046 | session->leds = 0xff; |
| 1047 | hidp_input_event(session->input, EV_LED, 0, 0); |
| 1048 | } |
| 1049 | |
| 1050 | up_write(&hidp_session_sem); |
| 1051 | return 0; |
| 1052 | |
Alan Ott | 0f69dca | 2011-01-18 03:04:37 -0500 | [diff] [blame] | 1053 | err_add_device: |
| 1054 | hid_destroy_device(session->hid); |
| 1055 | session->hid = NULL; |
| 1056 | atomic_inc(&session->terminate); |
| 1057 | hidp_schedule(session); |
| 1058 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | unlink: |
| 1060 | hidp_del_timer(session); |
| 1061 | |
| 1062 | __hidp_unlink_session(session); |
| 1063 | |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 1064 | if (session->input) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | input_unregister_device(session->input); |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 1066 | session->input = NULL; |
| 1067 | } |
| 1068 | |
| 1069 | if (session->hid) { |
Jiri Slaby | 85cdaf5 | 2008-05-16 11:49:15 +0200 | [diff] [blame] | 1070 | hid_destroy_device(session->hid); |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 1071 | session->hid = NULL; |
| 1072 | } |
| 1073 | |
Michael Poole | 15c697c | 2010-02-05 12:23:43 -0500 | [diff] [blame] | 1074 | kfree(session->rd_data); |
| 1075 | session->rd_data = NULL; |
| 1076 | |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 1077 | purge: |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 1078 | skb_queue_purge(&session->ctrl_transmit); |
| 1079 | skb_queue_purge(&session->intr_transmit); |
Marcel Holtmann | edad638 | 2009-08-22 14:22:15 -0700 | [diff] [blame] | 1080 | |
Jiri Slaby | c500c97 | 2008-05-16 11:49:16 +0200 | [diff] [blame] | 1081 | failed: |
| 1082 | up_write(&hidp_session_sem); |
Marcel Holtmann | e1aaadd | 2007-02-17 23:58:49 +0100 | [diff] [blame] | 1083 | |
Marcel Holtmann | 5be3946 | 2007-05-09 09:15:30 +0200 | [diff] [blame] | 1084 | input_free_device(session->input); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | kfree(session); |
| 1086 | return err; |
| 1087 | } |
| 1088 | |
| 1089 | int hidp_del_connection(struct hidp_conndel_req *req) |
| 1090 | { |
| 1091 | struct hidp_session *session; |
| 1092 | int err = 0; |
| 1093 | |
| 1094 | BT_DBG(""); |
| 1095 | |
| 1096 | down_read(&hidp_session_sem); |
| 1097 | |
| 1098 | session = __hidp_get_session(&req->bdaddr); |
| 1099 | if (session) { |
| 1100 | if (req->flags & (1 << HIDP_VIRTUAL_CABLE_UNPLUG)) { |
| 1101 | hidp_send_ctrl_message(session, |
| 1102 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG, NULL, 0); |
| 1103 | } else { |
| 1104 | /* Flush the transmit queues */ |
| 1105 | skb_queue_purge(&session->ctrl_transmit); |
| 1106 | skb_queue_purge(&session->intr_transmit); |
| 1107 | |
Marcel Holtmann | ec8dab3 | 2008-07-14 20:13:53 +0200 | [diff] [blame] | 1108 | /* Wakeup user-space polling for socket errors */ |
| 1109 | session->intr_sock->sk->sk_err = EUNATCH; |
| 1110 | session->ctrl_sock->sk->sk_err = EUNATCH; |
| 1111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | /* Kill session thread */ |
| 1113 | atomic_inc(&session->terminate); |
| 1114 | hidp_schedule(session); |
| 1115 | } |
| 1116 | } else |
| 1117 | err = -ENOENT; |
| 1118 | |
| 1119 | up_read(&hidp_session_sem); |
| 1120 | return err; |
| 1121 | } |
| 1122 | |
| 1123 | int hidp_get_connlist(struct hidp_connlist_req *req) |
| 1124 | { |
| 1125 | struct list_head *p; |
| 1126 | int err = 0, n = 0; |
| 1127 | |
| 1128 | BT_DBG(""); |
| 1129 | |
| 1130 | down_read(&hidp_session_sem); |
| 1131 | |
| 1132 | list_for_each(p, &hidp_session_list) { |
| 1133 | struct hidp_session *session; |
| 1134 | struct hidp_conninfo ci; |
| 1135 | |
| 1136 | session = list_entry(p, struct hidp_session, list); |
| 1137 | |
| 1138 | __hidp_copy_session(session, &ci); |
| 1139 | |
| 1140 | if (copy_to_user(req->ci, &ci, sizeof(ci))) { |
| 1141 | err = -EFAULT; |
| 1142 | break; |
| 1143 | } |
| 1144 | |
| 1145 | if (++n >= req->cnum) |
| 1146 | break; |
| 1147 | |
| 1148 | req->ci++; |
| 1149 | } |
| 1150 | req->cnum = n; |
| 1151 | |
| 1152 | up_read(&hidp_session_sem); |
| 1153 | return err; |
| 1154 | } |
| 1155 | |
| 1156 | int hidp_get_conninfo(struct hidp_conninfo *ci) |
| 1157 | { |
| 1158 | struct hidp_session *session; |
| 1159 | int err = 0; |
| 1160 | |
| 1161 | down_read(&hidp_session_sem); |
| 1162 | |
| 1163 | session = __hidp_get_session(&ci->bdaddr); |
| 1164 | if (session) |
| 1165 | __hidp_copy_session(session, ci); |
| 1166 | else |
| 1167 | err = -ENOENT; |
| 1168 | |
| 1169 | up_read(&hidp_session_sem); |
| 1170 | return err; |
| 1171 | } |
| 1172 | |
Jiri Slaby | 85cdaf5 | 2008-05-16 11:49:15 +0200 | [diff] [blame] | 1173 | static const struct hid_device_id hidp_table[] = { |
| 1174 | { HID_BLUETOOTH_DEVICE(HID_ANY_ID, HID_ANY_ID) }, |
| 1175 | { } |
| 1176 | }; |
| 1177 | |
| 1178 | static struct hid_driver hidp_driver = { |
| 1179 | .name = "generic-bluetooth", |
| 1180 | .id_table = hidp_table, |
| 1181 | }; |
| 1182 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | static int __init hidp_init(void) |
| 1184 | { |
Jiri Slaby | 85cdaf5 | 2008-05-16 11:49:15 +0200 | [diff] [blame] | 1185 | int ret; |
| 1186 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | BT_INFO("HIDP (Human Interface Emulation) ver %s", VERSION); |
| 1188 | |
Jiri Slaby | 85cdaf5 | 2008-05-16 11:49:15 +0200 | [diff] [blame] | 1189 | ret = hid_register_driver(&hidp_driver); |
| 1190 | if (ret) |
| 1191 | goto err; |
| 1192 | |
| 1193 | ret = hidp_init_sockets(); |
| 1194 | if (ret) |
| 1195 | goto err_drv; |
| 1196 | |
| 1197 | return 0; |
| 1198 | err_drv: |
| 1199 | hid_unregister_driver(&hidp_driver); |
| 1200 | err: |
| 1201 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | } |
| 1203 | |
| 1204 | static void __exit hidp_exit(void) |
| 1205 | { |
| 1206 | hidp_cleanup_sockets(); |
Jiri Slaby | 85cdaf5 | 2008-05-16 11:49:15 +0200 | [diff] [blame] | 1207 | hid_unregister_driver(&hidp_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | } |
| 1209 | |
| 1210 | module_init(hidp_init); |
| 1211 | module_exit(hidp_exit); |
| 1212 | |
| 1213 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
| 1214 | MODULE_DESCRIPTION("Bluetooth HIDP ver " VERSION); |
| 1215 | MODULE_VERSION(VERSION); |
| 1216 | MODULE_LICENSE("GPL"); |
| 1217 | MODULE_ALIAS("bt-proto-6"); |