adb.c revision 1.7
1 /* $NetBSD: adb.c,v 1.7 1996/05/05 06:16:19 briggs Exp $ */ 2 3 /*- 4 * Copyright (C) 1994 Bradley A. Grantham 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 e* notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Bradley A. Grantham. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/param.h> 34 #include <sys/device.h> 35 #include <sys/fcntl.h> 36 #include <sys/select.h> 37 #include <sys/proc.h> 38 #include <sys/signalvar.h> 39 #include <sys/systm.h> 40 41 #include <machine/adbsys.h> 42 #include <machine/autoconf.h> 43 #include <machine/keyboard.h> 44 45 #include "adbvar.h" 46 #include "itevar.h" 47 #include "../mac68k/macrom.h" 48 49 /* 50 * Function declarations. 51 */ 52 static int adbmatch __P((struct device *, void *, void *)); 53 static void adbattach __P((struct device *, struct device *, void *)); 54 55 /* 56 * Global variables. 57 */ 58 int adb_polling = 0; /* Are we polling? (Debugger mode) */ 59 60 /* 61 * Local variables. 62 */ 63 64 /* External keyboard translation matrix */ 65 extern unsigned char keyboard[128][3]; 66 67 /* Event queue definitions */ 68 #if !defined(ADB_MAX_EVENTS) 69 #define ADB_MAX_EVENTS 200 /* Maximum events to be kept in queue */ 70 /* maybe should be higher for slower macs? */ 71 #endif /* !defined(ADB_MAX_EVENTS) */ 72 static adb_event_t adb_evq[ADB_MAX_EVENTS]; /* ADB event queue */ 73 static int adb_evq_tail = 0; /* event queue tail */ 74 static int adb_evq_len = 0; /* event queue length */ 75 76 /* ADB device state information */ 77 static int adb_isopen = 0; /* Are we queuing events for adb_read? */ 78 static struct selinfo adb_selinfo; /* select() info */ 79 static struct proc *adb_ioproc = NULL; /* process to wakeup */ 80 81 /* Key repeat parameters */ 82 static int adb_rptdelay = 20; /* ticks before auto-repeat */ 83 static int adb_rptinterval = 6; /* ticks between auto-repeat */ 84 static int adb_repeating = -1; /* key that is auto-repeating */ 85 static adb_event_t adb_rptevent;/* event to auto-repeat */ 86 87 /* Driver definition. -- This should probably be a bus... */ 88 struct cfattach adb_ca = { 89 sizeof(struct device), adbmatch, adbattach 90 }; 91 92 struct cfdriver adb_cd = { 93 NULL, "adb", DV_DULL 94 }; 95 96 static int 97 adbmatch(pdp, match, auxp) 98 struct device *pdp; 99 void *match, *auxp; 100 { 101 return 1; 102 } 103 104 static void 105 adbattach(parent, dev, aux) 106 struct device *parent, *dev; 107 void *aux; 108 { 109 printf(" (ADB event device)\n"); 110 } 111 112 void 113 adb_enqevent(event) 114 adb_event_t *event; 115 { 116 int s; 117 118 if (adb_evq_tail < 0 || adb_evq_tail >= ADB_MAX_EVENTS) 119 panic("adb: event queue tail is out of bounds"); 120 121 if (adb_evq_len < 0 || adb_evq_len > ADB_MAX_EVENTS) 122 panic("adb: event queue len is out of bounds"); 123 124 s = splhigh(); 125 126 if (adb_evq_len == ADB_MAX_EVENTS) { 127 splx(s); 128 return; /* Oh, well... */ 129 } 130 adb_evq[(adb_evq_len + adb_evq_tail) % ADB_MAX_EVENTS] = 131 *event; 132 adb_evq_len++; 133 134 selwakeup(&adb_selinfo); 135 if (adb_ioproc) 136 psignal(adb_ioproc, SIGIO); 137 138 splx(s); 139 } 140 141 void 142 adb_handoff(event) 143 adb_event_t *event; 144 { 145 if (adb_isopen && !adb_polling) { 146 adb_enqevent(event); 147 } else { 148 if (event->def_addr == 2) 149 ite_intr(event); 150 } 151 } 152 153 154 void 155 adb_autorepeat(keyp) 156 void *keyp; 157 { 158 int key = (int) keyp; 159 160 adb_rptevent.bytes[0] |= 0x80; 161 microtime(&adb_rptevent.timestamp); 162 adb_handoff(&adb_rptevent); /* do key up */ 163 164 adb_rptevent.bytes[0] &= 0x7f; 165 microtime(&adb_rptevent.timestamp); 166 adb_handoff(&adb_rptevent); /* do key down */ 167 168 if (adb_repeating == key) { 169 timeout(adb_autorepeat, keyp, adb_rptinterval); 170 } 171 } 172 173 174 void 175 adb_dokeyupdown(event) 176 adb_event_t *event; 177 { 178 int adb_key; 179 180 if (event->def_addr == 2) { 181 adb_key = event->u.k.key & 0x7f; 182 if (!(event->u.k.key & 0x80) && 183 keyboard[event->u.k.key & 0x7f][0] != 0) { 184 /* ignore shift & control */ 185 if (adb_repeating != -1) { 186 untimeout(adb_autorepeat, 187 (void *) adb_rptevent.u.k.key); 188 } 189 adb_rptevent = *event; 190 adb_repeating = adb_key; 191 timeout(adb_autorepeat, 192 (void *) adb_key, adb_rptdelay); 193 } else { 194 if (adb_repeating != -1) { 195 adb_repeating = -1; 196 untimeout(adb_autorepeat, 197 (void *) adb_rptevent.u.k.key); 198 } 199 adb_rptevent = *event; 200 } 201 } 202 adb_handoff(event); 203 } 204 205 static adb_ms_buttons = 0; 206 207 void 208 adb_keymaybemouse(event) 209 adb_event_t *event; 210 { 211 static int optionkey_down = 0; 212 adb_event_t new_event; 213 214 if (event->u.k.key == ADBK_KEYDOWN(ADBK_OPTION)) { 215 optionkey_down = 1; 216 } else if (event->u.k.key == ADBK_KEYUP(ADBK_OPTION)) { 217 /* key up */ 218 optionkey_down = 0; 219 if (adb_ms_buttons & 0xfe) { 220 adb_ms_buttons &= 1; 221 new_event.def_addr = ADBADDR_MS; 222 new_event.u.m.buttons = adb_ms_buttons; 223 new_event.u.m.dx = new_event.u.m.dy = 0; 224 microtime(&new_event.timestamp); 225 adb_dokeyupdown(&new_event); 226 } 227 } else if (optionkey_down) { 228 if (event->u.k.key == ADBK_KEYDOWN(ADBK_LEFT)) { 229 adb_ms_buttons |= 2; /* middle down */ 230 new_event.def_addr = ADBADDR_MS; 231 new_event.u.m.buttons = adb_ms_buttons; 232 new_event.u.m.dx = new_event.u.m.dy = 0; 233 microtime(&new_event.timestamp); 234 adb_dokeyupdown(&new_event); 235 } else if (event->u.k.key == ADBK_KEYUP(ADBK_LEFT)) { 236 adb_ms_buttons &= ~2; /* middle up */ 237 new_event.def_addr = ADBADDR_MS; 238 new_event.u.m.buttons = adb_ms_buttons; 239 new_event.u.m.dx = new_event.u.m.dy = 0; 240 microtime(&new_event.timestamp); 241 adb_dokeyupdown(&new_event); 242 } else if (event->u.k.key == ADBK_KEYDOWN(ADBK_RIGHT)) { 243 adb_ms_buttons |= 4; /* right down */ 244 new_event.def_addr = ADBADDR_MS; 245 new_event.u.m.buttons = adb_ms_buttons; 246 new_event.u.m.dx = new_event.u.m.dy = 0; 247 microtime(&new_event.timestamp); 248 adb_dokeyupdown(&new_event); 249 } else if (event->u.k.key == ADBK_KEYUP(ADBK_RIGHT)) { 250 adb_ms_buttons &= ~4; /* right up */ 251 new_event.def_addr = ADBADDR_MS; 252 new_event.u.m.buttons = adb_ms_buttons; 253 new_event.u.m.dx = new_event.u.m.dy = 0; 254 microtime(&new_event.timestamp); 255 adb_dokeyupdown(&new_event); 256 } else if (ADBK_MODIFIER(event->u.k.key)) { 257 /* ctrl, shift, cmd */ 258 adb_dokeyupdown(event); 259 } else if (!(event->u.k.key & 0x80)) { 260 /* key down */ 261 new_event = *event; 262 263 /* send option-down */ 264 new_event.u.k.key = ADBK_KEYDOWN(ADBK_OPTION); 265 new_event.bytes[0] = new_event.u.k.key; 266 microtime(&new_event.timestamp); 267 adb_dokeyupdown(&new_event); 268 269 /* send key-down */ 270 new_event.u.k.key = event->bytes[0]; 271 new_event.bytes[0] = new_event.u.k.key; 272 microtime(&new_event.timestamp); 273 adb_dokeyupdown(&new_event); 274 275 /* send key-up */ 276 new_event.u.k.key = 277 ADBK_KEYUP(ADBK_KEYVAL(event->bytes[0])); 278 microtime(&new_event.timestamp); 279 new_event.bytes[0] = new_event.u.k.key; 280 adb_dokeyupdown(&new_event); 281 282 /* send option-up */ 283 new_event.u.k.key = ADBK_KEYUP(ADBK_OPTION); 284 new_event.bytes[0] = new_event.u.k.key; 285 microtime(&new_event.timestamp); 286 adb_dokeyupdown(&new_event); 287 } else { 288 /* option-keyup -- do nothing. */ 289 } 290 } else { 291 adb_dokeyupdown(event); 292 } 293 } 294 295 296 void 297 adb_processevent(event) 298 adb_event_t *event; 299 { 300 adb_event_t new_event; 301 int i, button_bit, max_byte, mask, buttons; 302 303 new_event = *event; 304 buttons = 0; 305 306 switch (event->def_addr) { 307 case ADBADDR_KBD: 308 new_event.u.k.key = event->bytes[0]; 309 new_event.bytes[1] = 0xff; 310 adb_keymaybemouse(&new_event); 311 if (event->bytes[1] != 0xff) { 312 new_event.u.k.key = event->bytes[1]; 313 new_event.bytes[0] = event->bytes[1]; 314 new_event.bytes[1] = 0xff; 315 adb_keymaybemouse(&new_event); 316 } 317 break; 318 case ADBADDR_MS: 319 /* 320 * This should handle both plain ol' Apple mice and mice 321 * that claim to support the Extended Apple Mouse Protocol. 322 */ 323 max_byte = event->byte_count; 324 button_bit = 1; 325 /* Classic Mouse Protocol (up to 2 buttons) */ 326 for (i = 0; i < 2; i++, button_bit <<= 1) 327 /* 0 when button down */ 328 if (!(event->bytes[i] & 0x80)) 329 buttons |= button_bit; 330 else 331 buttons &= ~button_bit; 332 /* Extended Protocol (up to 6 more buttons) */ 333 for (mask = 0x80; i < max_byte; 334 i += (mask == 0x80), button_bit <<= 1) { 335 /* 0 when button down */ 336 if (!(event->bytes[i] & mask)) 337 buttons |= button_bit; 338 else 339 buttons &= ~button_bit; 340 mask = ((mask >> 4) & 0xf) | ((mask & 0xf) << 4); 341 } 342 new_event.u.m.buttons = adb_ms_buttons | buttons; 343 new_event.u.m.dx = ((signed int) (event->bytes[1] & 0x3f)) - 344 ((event->bytes[1] & 0x40) ? 64 : 0); 345 new_event.u.m.dy = ((signed int) (event->bytes[0] & 0x3f)) - 346 ((event->bytes[0] & 0x40) ? 64 : 0); 347 adb_dokeyupdown(&new_event); 348 break; 349 default: /* God only knows. */ 350 adb_dokeyupdown(event); 351 } 352 } 353 354 355 int 356 adbopen(dev, flag, mode, p) 357 dev_t dev; 358 int flag, mode; 359 struct proc *p; 360 { 361 register int unit; 362 int error = 0; 363 int s; 364 365 unit = minor(dev); 366 if (unit != 0) 367 return (ENXIO); 368 369 s = splhigh(); 370 if (adb_isopen) { 371 splx(s); 372 return (EBUSY); 373 } 374 splx(s); 375 adb_evq_tail = 0; 376 adb_evq_len = 0; 377 adb_isopen = 1; 378 adb_ioproc = p; 379 380 return (error); 381 } 382 383 384 int 385 adbclose(dev, flag, mode, p) 386 dev_t dev; 387 int flag, mode; 388 struct proc *p; 389 { 390 adb_isopen = 0; 391 adb_ioproc = NULL; 392 return (0); 393 } 394 395 396 int 397 adbread(dev, uio, flag) 398 dev_t dev; 399 struct uio *uio; 400 int flag; 401 { 402 int s, error; 403 int willfit; 404 int total; 405 int firstmove; 406 int moremove; 407 408 if (uio->uio_resid < sizeof(adb_event_t)) 409 return (EMSGSIZE); /* close enough. */ 410 411 s = splhigh(); 412 if (adb_evq_len == 0) { 413 splx(s); 414 return (0); 415 } 416 willfit = howmany(uio->uio_resid, sizeof(adb_event_t)); 417 total = (adb_evq_len < willfit) ? adb_evq_len : willfit; 418 419 firstmove = (adb_evq_tail + total > ADB_MAX_EVENTS) 420 ? (ADB_MAX_EVENTS - adb_evq_tail) : total; 421 422 error = uiomove((caddr_t) & adb_evq[adb_evq_tail], 423 firstmove * sizeof(adb_event_t), uio); 424 if (error) { 425 splx(s); 426 return (error); 427 } 428 moremove = total - firstmove; 429 430 if (moremove > 0) { 431 error = uiomove((caddr_t) & adb_evq[0], 432 moremove * sizeof(adb_event_t), uio); 433 if (error) { 434 splx(s); 435 return (error); 436 } 437 } 438 adb_evq_tail = (adb_evq_tail + total) % ADB_MAX_EVENTS; 439 adb_evq_len -= total; 440 splx(s); 441 return (0); 442 } 443 444 445 int 446 adbwrite(dev, uio, flag) 447 dev_t dev; 448 struct uio *uio; 449 int flag; 450 { 451 return 0; 452 } 453 454 455 int 456 adbioctl(dev, cmd, data, flag, p) 457 dev_t dev; 458 int cmd; 459 caddr_t data; 460 int flag; 461 struct proc *p; 462 { 463 switch (cmd) { 464 case ADBIOC_DEVSINFO: { 465 adb_devinfo_t *di; 466 ADBDataBlock adbdata; 467 int totaldevs; 468 int adbaddr; 469 int i; 470 471 di = (void *) data; 472 473 /* Initialize to no devices */ 474 for (i = 0; i < 16; i++) 475 di->dev[i].addr = -1; 476 477 totaldevs = CountADBs(); 478 for (i = 1; i <= totaldevs; i++) { 479 adbaddr = GetIndADB(&adbdata, i); 480 di->dev[adbaddr].addr = adbaddr; 481 di->dev[adbaddr].default_addr = adbdata.origADBAddr; 482 di->dev[adbaddr].handler_id = adbdata.devType; 483 } 484 485 /* Must call ADB Manager to get devices now */ 486 break; 487 } 488 489 case ADBIOC_GETREPEAT:{ 490 adb_rptinfo_t *ri; 491 492 ri = (void *) data; 493 ri->delay_ticks = adb_rptdelay; 494 ri->interval_ticks = adb_rptinterval; 495 break; 496 } 497 498 case ADBIOC_SETREPEAT:{ 499 adb_rptinfo_t *ri; 500 501 ri = (void *) data; 502 adb_rptdelay = ri->delay_ticks; 503 adb_rptinterval = ri->interval_ticks; 504 break; 505 } 506 507 case ADBIOC_RESET: 508 adb_init(); 509 break; 510 511 case ADBIOC_LISTENCMD:{ 512 adb_listencmd_t *lc; 513 514 lc = (void *) data; 515 } 516 517 default: 518 return (EINVAL); 519 } 520 return (0); 521 } 522 523 524 int 525 adbselect(dev, rw, p) 526 dev_t dev; 527 int rw; 528 struct proc *p; 529 { 530 switch (rw) { 531 case FREAD: 532 /* succeed if there is something to read */ 533 if (adb_evq_len > 0) 534 return (1); 535 selrecord(p, &adb_selinfo); 536 break; 537 538 case FWRITE: 539 return (1); /* always fails => never blocks */ 540 break; 541 } 542 543 return (0); 544 } 545
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