1 /* 2 * hid.c 3 */ 4 5 /*- 6 * Copyright (c) 2006 Maksim Yevmenkin <m_evmenkin@yahoo.com> 7 * All rights reserved. 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 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $Id: hid.c,v 1.5 2006/09/07 21:06:53 max Exp $ 31 * $FreeBSD$ 32 */ 33 34 #include <sys/consio.h> 35 #include <sys/mouse.h> 36 #include <sys/queue.h> 37 #include <assert.h> 38 #include <bluetooth.h> 39 #include <dev/usb/usb.h> 40 #include <dev/usb/usbhid.h> 41 #include <errno.h> 42 #include <stdio.h> 43 #include <string.h> 44 #include <syslog.h> 45 #include <unistd.h> 46 #include <usbhid.h> 47 #include "bthid_config.h" 48 #include "bthidd.h" 49 #include "kbd.h" 50 51 /* 52 * Process data from control channel 53 */ 54 55 int32_t 56 hid_control(bthid_session_p s, uint8_t *data, int32_t len) 57 { 58 assert(s != NULL); 59 assert(data != NULL); 60 assert(len > 0); 61 62 switch (data[0] >> 4) { 63 case 0: /* Handshake (response to command) */ 64 if (data[0] & 0xf) 65 syslog(LOG_ERR, "Got handshake message with error " \ 66 "response 0x%x from %s", 67 data[0], bt_ntoa(&s->bdaddr, NULL)); 68 break; 69 70 case 1: /* HID Control */ 71 switch (data[0] & 0xf) { 72 case 0: /* NOP */ 73 break; 74 75 case 1: /* Hard reset */ 76 case 2: /* Soft reset */ 77 syslog(LOG_WARNING, "Device %s requested %s reset", 78 bt_ntoa(&s->bdaddr, NULL), 79 ((data[0] & 0xf) == 1)? "hard" : "soft"); 80 break; 81 82 case 3: /* Suspend */ 83 syslog(LOG_NOTICE, "Device %s requested Suspend", 84 bt_ntoa(&s->bdaddr, NULL)); 85 break; 86 87 case 4: /* Exit suspend */ 88 syslog(LOG_NOTICE, "Device %s requested Exit Suspend", 89 bt_ntoa(&s->bdaddr, NULL)); 90 break; 91 92 case 5: /* Virtual cable unplug */ 93 syslog(LOG_NOTICE, "Device %s unplugged virtual cable", 94 bt_ntoa(&s->bdaddr, NULL)); 95 session_close(s); 96 break; 97 98 default: 99 syslog(LOG_WARNING, "Device %s sent unknown " \ 100 "HID_Control message 0x%x", 101 bt_ntoa(&s->bdaddr, NULL), data[0]); 102 break; 103 } 104 break; 105 106 default: 107 syslog(LOG_WARNING, "Got unexpected message 0x%x on Control " \ 108 "channel from %s", data[0], bt_ntoa(&s->bdaddr, NULL)); 109 break; 110 } 111 112 return (0); 113 } 114 115 /* 116 * Process data from the interrupt channel 117 */ 118 119 int32_t 120 hid_interrupt(bthid_session_p s, uint8_t *data, int32_t len) 121 { 122 hid_device_p hid_device; 123 hid_data_t d; 124 hid_item_t h; 125 int32_t report_id, usage, page, val, 126 mouse_x, mouse_y, mouse_z, mouse_butt, 127 mevents, kevents, i; 128 129 assert(s != NULL); 130 assert(s->srv != NULL); 131 assert(data != NULL); 132 133 if (len < 3) { 134 syslog(LOG_ERR, "Got short message (%d bytes) on Interrupt " \ 135 "channel from %s", len, bt_ntoa(&s->bdaddr, NULL)); 136 return (-1); 137 } 138 139 if (data[0] != 0xa1) { 140 syslog(LOG_ERR, "Got unexpected message 0x%x on " \ 141 "Interrupt channel from %s", 142 data[0], bt_ntoa(&s->bdaddr, NULL)); 143 return (-1); 144 } 145 146 report_id = data[1]; 147 data ++; 148 len --; 149 150 hid_device = get_hid_device(&s->bdaddr); 151 assert(hid_device != NULL); 152 153 mouse_x = mouse_y = mouse_z = mouse_butt = mevents = kevents = 0; 154 155 for (d = hid_start_parse(hid_device->desc, 1 << hid_input, -1); 156 hid_get_item(d, &h) > 0; ) { 157 if ((h.flags & HIO_CONST) || (h.report_ID != report_id) || 158 (h.kind != hid_input)) 159 continue; 160 161 page = HID_PAGE(h.usage); 162 val = hid_get_data(data, &h); 163 164 /* 165 * When the input field is an array and the usage is specified 166 * with a range instead of an ID, we have to derive the actual 167 * usage by using the item value as an index in the usage range 168 * list. 169 */ 170 if ((h.flags & HIO_VARIABLE)) { 171 usage = HID_USAGE(h.usage); 172 } else { 173 const uint32_t usage_offset = val - h.logical_minimum; 174 usage = HID_USAGE(h.usage_minimum + usage_offset); 175 } 176 177 switch (page) { 178 case HUP_GENERIC_DESKTOP: 179 switch (usage) { 180 case HUG_X: 181 mouse_x = val; 182 mevents ++; 183 break; 184 185 case HUG_Y: 186 mouse_y = val; 187 mevents ++; 188 break; 189 190 case HUG_WHEEL: 191 mouse_z = -val; 192 mevents ++; 193 break; 194 195 case HUG_SYSTEM_SLEEP: 196 if (val) 197 syslog(LOG_NOTICE, "Sleep button pressed"); 198 break; 199 } 200 break; 201 202 case HUP_KEYBOARD: 203 kevents ++; 204 205 if (h.flags & HIO_VARIABLE) { 206 if (val && usage < kbd_maxkey()) 207 bit_set(s->keys1, usage); 208 } else { 209 if (val && val < kbd_maxkey()) 210 bit_set(s->keys1, val); 211 212 for (i = 1; i < h.report_count; i++) { 213 h.pos += h.report_size; 214 val = hid_get_data(data, &h); 215 if (val && val < kbd_maxkey()) 216 bit_set(s->keys1, val); 217 } 218 } 219 break; 220 221 case HUP_BUTTON: 222 if (usage != 0) { 223 if (usage == 2) 224 usage = 3; 225 else if (usage == 3) 226 usage = 2; 227 228 mouse_butt |= (val << (usage - 1)); 229 mevents ++; 230 } 231 break; 232 233 case HUP_CONSUMER: 234 if (!val) 235 break; 236 237 switch (usage) { 238 case HUC_AC_PAN: 239 /* Horizontal scroll */ 240 if (val < 0) 241 mouse_butt |= (1 << 5); 242 else 243 mouse_butt |= (1 << 6); 244 245 mevents ++; 246 val = 0; 247 break; 248 249 case 0xb5: /* Scan Next Track */ 250 val = 0x19; 251 break; 252 253 case 0xb6: /* Scan Previous Track */ 254 val = 0x10; 255 break; 256 257 case 0xb7: /* Stop */ 258 val = 0x24; 259 break; 260 261 case 0xcd: /* Play/Pause */ 262 val = 0x22; 263 break; 264 265 case 0xe2: /* Mute */ 266 val = 0x20; 267 break; 268 269 case 0xe9: /* Volume Up */ 270 val = 0x30; 271 break; 272 273 case 0xea: /* Volume Down */ 274 val = 0x2E; 275 break; 276 277 case 0x183: /* Media Select */ 278 val = 0x6D; 279 break; 280 281 case 0x018a: /* Mail */ 282 val = 0x6C; 283 break; 284 285 case 0x192: /* Calculator */ 286 val = 0x21; 287 break; 288 289 case 0x194: /* My Computer */ 290 val = 0x6B; 291 break; 292 293 case 0x221: /* WWW Search */ 294 val = 0x65; 295 break; 296 297 case 0x223: /* WWW Home */ 298 val = 0x32; 299 break; 300 301 case 0x224: /* WWW Back */ 302 val = 0x6A; 303 break; 304 305 case 0x225: /* WWW Forward */ 306 val = 0x69; 307 break; 308 309 case 0x226: /* WWW Stop */ 310 val = 0x68; 311 break; 312 313 case 0x227: /* WWW Refresh */ 314 val = 0x67; 315 break; 316 317 case 0x22a: /* WWW Favorites */ 318 val = 0x66; 319 break; 320 321 default: 322 val = 0; 323 break; 324 } 325 326 /* XXX FIXME - UGLY HACK */ 327 if (val != 0) { 328 if (hid_device->keyboard) { 329 int32_t buf[4] = { 0xe0, val, 330 0xe0, val|0x80 }; 331 332 assert(s->vkbd != -1); 333 write(s->vkbd, buf, sizeof(buf)); 334 } else 335 syslog(LOG_ERR, "Keyboard events " \ 336 "received from non-keyboard " \ 337 "device %s. Please report", 338 bt_ntoa(&s->bdaddr, NULL)); 339 } 340 break; 341 342 case HUP_MICROSOFT: 343 switch (usage) { 344 case 0xfe01: 345 if (!hid_device->battery_power) 346 break; 347 348 switch (val) { 349 case 1: 350 syslog(LOG_INFO, "Battery is OK on %s", 351 bt_ntoa(&s->bdaddr, NULL)); 352 break; 353 354 case 2: 355 syslog(LOG_NOTICE, "Low battery on %s", 356 bt_ntoa(&s->bdaddr, NULL)); 357 break; 358 359 case 3: 360 syslog(LOG_WARNING, "Very low battery "\ 361 "on %s", 362 bt_ntoa(&s->bdaddr, NULL)); 363 break; 364 } 365 break; 366 } 367 break; 368 } 369 } 370 hid_end_parse(d); 371 372 /* 373 * XXX FIXME Feed keyboard events into kernel. 374 * The code below works, bit host also needs to track 375 * and handle repeat. 376 * 377 * Key repeat currently works in X, but not in console. 378 */ 379 380 if (kevents > 0) { 381 if (hid_device->keyboard) { 382 assert(s->vkbd != -1); 383 kbd_process_keys(s); 384 } else 385 syslog(LOG_ERR, "Keyboard events received from " \ 386 "non-keyboard device %s. Please report", 387 bt_ntoa(&s->bdaddr, NULL)); 388 } 389 390 /* 391 * XXX FIXME Feed mouse events into kernel. 392 * The code block below works, but it is not good enough. 393 * Need to track double-clicks etc. 394 * 395 * Double click currently works in X, but not in console. 396 */ 397 398 if (mevents > 0) { 399 struct mouse_info mi; 400 401 mi.operation = MOUSE_ACTION; 402 mi.u.data.x = mouse_x; 403 mi.u.data.y = mouse_y; 404 mi.u.data.z = mouse_z; 405 mi.u.data.buttons = mouse_butt; 406 407 if (ioctl(s->srv->cons, CONS_MOUSECTL, &mi) < 0) 408 syslog(LOG_ERR, "Could not process mouse events from " \ 409 "%s. %s (%d)", bt_ntoa(&s->bdaddr, NULL), 410 strerror(errno), errno); 411 } 412 413 return (0); 414 } 415