1 /* 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * the Systems Programming Group of the University of Utah Computer 8 * Science Department. 9 * 10 * %sccs.include.redist.c% 11 * 12 * from: Utah $Hdr: hil.c 1.33 89/12/22$ 13 * 14 * @(#)hil.c 7.6 (Berkeley) 12/16/90 15 */ 16 17 #include "sys/param.h" 18 #include "sys/conf.h" 19 #include "sys/user.h" 20 #include "sys/proc.h" 21 #include "sys/ioctl.h" 22 #include "sys/file.h" 23 #include "sys/tty.h" 24 #include "sys/systm.h" 25 #include "sys/uio.h" 26 #include "sys/kernel.h" 27 28 #include "hilreg.h" 29 #include "hilioctl.h" 30 #include "hilvar.h" 31 #include "kbdmap.h" 32 33 #include "../include/cpu.h" 34 35 #include "vm/vm_param.h" 36 #include "vm/vm_map.h" 37 #include "vm/vm_kern.h" 38 #include "vm/vm_page.h" 39 #include "vm/vm_pager.h" 40 41 struct hilloop hil0; 42 struct _hilbell default_bell = { BELLDUR, BELLFREQ }; 43 44 #ifdef DEBUG 45 int hildebug = 0; 46 #define HDB_FOLLOW 0x01 47 #define HDB_MMAP 0x02 48 #define HDB_MASK 0x04 49 #define HDB_CONFIG 0x08 50 #define HDB_KEYBOARD 0x10 51 #define HDB_IDMODULE 0x20 52 #define HDB_EVENTS 0x80 53 #endif 54 55 /* symbolic sleep message strings */ 56 char hilin[] = "hilin"; 57 58 hilinit() 59 { 60 register struct hilloop *hilp = &hil0; /* XXX */ 61 register int i; 62 63 /* 64 * Initialize loop information 65 */ 66 hilp->hl_addr = HILADDR; 67 hilp->hl_cmdending = FALSE; 68 hilp->hl_actdev = hilp->hl_cmddev = 0; 69 hilp->hl_cmddone = FALSE; 70 hilp->hl_cmdbp = hilp->hl_cmdbuf; 71 hilp->hl_pollbp = hilp->hl_pollbuf; 72 hilp->hl_kbddev = 0; 73 hilp->hl_kbdlang = KBD_DEFAULT; 74 hilp->hl_kbdflags = 0; 75 /* 76 * Clear all queues and device associations with queues 77 */ 78 for (i = 0; i < NHILQ; i++) { 79 hilp->hl_queue[i].hq_eventqueue = NULL; 80 hilp->hl_queue[i].hq_procp = NULL; 81 hilp->hl_queue[i].hq_devmask = 0; 82 } 83 for (i = 0; i < NHILD; i++) 84 hilp->hl_device[i].hd_qmask = 0; 85 hilp->hl_device[HILLOOPDEV].hd_flags = (HIL_ALIVE|HIL_PSEUDO); 86 /* 87 * Reset the loop hardware, and collect keyboard/id info 88 */ 89 hilreset(hilp); 90 hilinfo(hilp); 91 kbdenable(); 92 } 93 94 hilopen(dev, flags) 95 dev_t dev; 96 { 97 struct proc *p = u.u_procp; /* XXX */ 98 register struct hilloop *hilp = &hil0; /* XXX */ 99 register struct hilloopdev *dptr; 100 u_char device = HILUNIT(dev); 101 102 #ifdef DEBUG 103 if (hildebug & HDB_FOLLOW) 104 printf("hilopen(%d): device %x\n", p->p_pid, device); 105 #endif 106 107 if ((hilp->hl_device[HILLOOPDEV].hd_flags & HIL_ALIVE) == 0) 108 return(ENXIO); 109 110 dptr = &hilp->hl_device[device]; 111 if ((dptr->hd_flags & HIL_ALIVE) == 0) 112 return(ENODEV); 113 114 /* 115 * Pseudo-devices cannot be read, nothing more to do. 116 */ 117 if (dptr->hd_flags & HIL_PSEUDO) 118 return(0); 119 120 /* 121 * Open semantics: 122 * 1. Open devices have only one of HIL_READIN/HIL_QUEUEIN. 123 * 2. HPUX processes always get read syscall interface and 124 * must have exclusive use of the device. 125 * 3. BSD processes default to shared queue interface. 126 * Multiple processes can open the device. 127 */ 128 if (p->p_flag & SHPUX) { 129 if (dptr->hd_flags & (HIL_READIN|HIL_QUEUEIN)) 130 return(EBUSY); 131 dptr->hd_flags |= HIL_READIN; 132 } else { 133 if (dptr->hd_flags & HIL_READIN) 134 return(EBUSY); 135 dptr->hd_flags |= HIL_QUEUEIN; 136 } 137 if (flags & FNDELAY) 138 dptr->hd_flags |= HIL_NOBLOCK; 139 /* 140 * It is safe to flush the read buffer as we are guarenteed 141 * that no one else is using it. 142 */ 143 ndflush(&dptr->hd_queue, dptr->hd_queue.c_cc); 144 145 send_hil_cmd(hilp->hl_addr, HIL_INTON, NULL, 0, NULL); 146 /* 147 * Opened the keyboard, put in raw mode. 148 */ 149 (void) splhil(); 150 if (device == hilp->hl_kbddev) { 151 u_char mask = 0; 152 send_hil_cmd(hilp->hl_addr, HIL_WRITEKBDSADR, &mask, 1, NULL); 153 hilp->hl_kbdflags |= KBD_RAW; 154 #ifdef DEBUG 155 if (hildebug & HDB_KEYBOARD) 156 printf("hilopen: keyboard %d raw\n", hilp->hl_kbddev); 157 #endif 158 } 159 (void) spl0(); 160 return (0); 161 } 162 163 /* ARGSUSED */ 164 hilclose(dev, flags) 165 dev_t dev; 166 { 167 struct proc *p = u.u_procp; /* XXX */ 168 register struct hilloop *hilp = &hil0; /* XXX */ 169 register struct hilloopdev *dptr; 170 register int i; 171 u_char device = HILUNIT(dev); 172 char mask, lpctrl; 173 174 #ifdef DEBUG 175 if (hildebug & HDB_FOLLOW) 176 printf("hilclose(%d): device %x\n", p->p_pid, device); 177 #endif 178 179 dptr = &hilp->hl_device[device]; 180 if (device && (dptr->hd_flags & HIL_PSEUDO)) 181 return (0); 182 183 if ((p->p_flag & SHPUX) == 0) { 184 /* 185 * If this is the loop device, 186 * free up all queues belonging to this process. 187 */ 188 if (device == 0) { 189 for (i = 0; i < NHILQ; i++) 190 if (hilp->hl_queue[i].hq_procp == p) 191 (void) hilqfree(i); 192 } else { 193 mask = ~hildevmask(device); 194 (void) splhil(); 195 for (i = 0; i < NHILQ; i++) 196 if (hilp->hl_queue[i].hq_procp == p) { 197 dptr->hd_qmask &= ~hilqmask(i); 198 hilp->hl_queue[i].hq_devmask &= mask; 199 } 200 (void) spl0(); 201 } 202 } 203 /* 204 * Always flush the read buffer 205 */ 206 dptr->hd_flags &= ~(HIL_QUEUEIN|HIL_READIN|HIL_NOBLOCK); 207 ndflush(&dptr->hd_queue, dptr->hd_queue.c_cc); 208 /* 209 * Set keyboard back to cooked mode when closed. 210 */ 211 (void) splhil(); 212 if (device && device == hilp->hl_kbddev) { 213 mask = 1 << (hilp->hl_kbddev - 1); 214 send_hil_cmd(hilp->hl_addr, HIL_WRITEKBDSADR, &mask, 1, NULL); 215 hilp->hl_kbdflags &= ~(KBD_RAW|KBD_AR1|KBD_AR2); 216 /* 217 * XXX: We have had trouble with keyboards remaining raw 218 * after close due to the LPC_KBDCOOK bit getting cleared 219 * somewhere along the line. Hence we check and reset 220 * LPCTRL if necessary. 221 */ 222 send_hil_cmd(hilp->hl_addr, HIL_READLPCTRL, NULL, 0, &lpctrl); 223 if ((lpctrl & LPC_KBDCOOK) == 0) { 224 printf("hilclose: bad LPCTRL %x, reset to %x\n", 225 lpctrl, lpctrl|LPC_KBDCOOK); 226 lpctrl |= LPC_KBDCOOK; 227 send_hil_cmd(hilp->hl_addr, HIL_WRITELPCTRL, 228 &lpctrl, 1, NULL); 229 } 230 #ifdef DEBUG 231 if (hildebug & HDB_KEYBOARD) 232 printf("hilclose: keyboard %d cooked\n", 233 hilp->hl_kbddev); 234 #endif 235 kbdenable(); 236 } 237 (void) spl0(); 238 return (0); 239 } 240 241 /* 242 * Read interface to HIL device. 243 */ 244 hilread(dev, uio) 245 dev_t dev; 246 register struct uio *uio; 247 { 248 struct hilloop *hilp = &hil0; /* XXX */ 249 register struct hilloopdev *dptr; 250 register int cc; 251 u_char device = HILUNIT(dev); 252 char buf[HILBUFSIZE]; 253 int error; 254 255 #if 0 256 /* 257 * XXX: Don't do this since HP-UX doesn't. 258 * 259 * Check device number. 260 * This check is necessary since loop can reconfigure. 261 */ 262 if (device > hilp->hl_maxdev) 263 return(ENODEV); 264 #endif 265 266 dptr = &hilp->hl_device[device]; 267 if ((dptr->hd_flags & HIL_READIN) == 0) 268 return(ENODEV); 269 270 (void) splhil(); 271 while (dptr->hd_queue.c_cc == 0) { 272 if (dptr->hd_flags & HIL_NOBLOCK) { 273 spl0(); 274 return(EWOULDBLOCK); 275 } 276 dptr->hd_flags |= HIL_ASLEEP; 277 if (error = tsleep((caddr_t)dptr, TTIPRI | PCATCH, hilin, 0)) { 278 (void) spl0(); 279 return (error); 280 } 281 } 282 (void) spl0(); 283 284 error = 0; 285 while (uio->uio_resid > 0 && error == 0) { 286 cc = hilq_to_b(&dptr->hd_queue, buf, 287 MIN(uio->uio_resid, HILBUFSIZE)); 288 if (cc <= 0) 289 break; 290 error = uiomove(buf, cc, uio); 291 } 292 return(error); 293 } 294 295 hilioctl(dev, cmd, data, flag) 296 dev_t dev; 297 caddr_t data; 298 { 299 struct proc *p = u.u_procp; /* XXX */ 300 register struct hilloop *hilp = &hil0; /* XXX */ 301 char device = HILUNIT(dev); 302 struct hilloopdev *dptr; 303 register int i; 304 u_char hold; 305 int error; 306 307 #ifdef DEBUG 308 if (hildebug & HDB_FOLLOW) 309 printf("hilioctl(%d): dev %x cmd %x\n", 310 p->p_pid, device, cmd); 311 #endif 312 313 dptr = &hilp->hl_device[device]; 314 if ((dptr->hd_flags & HIL_ALIVE) == 0) 315 return (ENODEV); 316 317 /* 318 * Don't allow hardware ioctls on virtual devices. 319 * Note that though these are the BSD names, they have the same 320 * values as the HP-UX equivalents so we catch them as well. 321 */ 322 if (dptr->hd_flags & HIL_PSEUDO) { 323 switch (cmd) { 324 case HILIOCSC: 325 case HILIOCID: 326 case HILIOCRN: 327 case HILIOCRS: 328 case HILIOCED: 329 return(ENODEV); 330 331 /* 332 * XXX: should also return ENODEV but HP-UX compat 333 * breaks if we do. They work ok right now because 334 * we only recognize one keyboard on the loop. This 335 * will have to change if we remove that restriction. 336 */ 337 case HILIOCAROFF: 338 case HILIOCAR1: 339 case HILIOCAR2: 340 break; 341 342 default: 343 break; 344 } 345 } 346 347 #ifdef HPUXCOMPAT 348 if (p->p_flag & SHPUX) 349 return(hpuxhilioctl(dev, cmd, data, flag)); 350 #endif 351 352 hilp->hl_cmdbp = hilp->hl_cmdbuf; 353 bzero((caddr_t)hilp->hl_cmdbuf, HILBUFSIZE); 354 hilp->hl_cmddev = device; 355 error = 0; 356 switch (cmd) { 357 358 case HILIOCSBP: 359 /* Send four data bytes to the tone gererator. */ 360 send_hil_cmd(hilp->hl_addr, HIL_STARTCMD, data, 4, NULL); 361 /* Send the trigger beeper command to the 8042. */ 362 send_hil_cmd(hilp->hl_addr, (cmd & 0xFF), NULL, 0, NULL); 363 break; 364 365 case HILIOCRRT: 366 /* Transfer the real time to the 8042 data buffer */ 367 send_hil_cmd(hilp->hl_addr, (cmd & 0xFF), NULL, 0, NULL); 368 /* Read each byte of the real time */ 369 for (i = 0; i < 5; i++) { 370 send_hil_cmd(hilp->hl_addr, HIL_READTIME + i, NULL, 371 0, &hold); 372 data[4-i] = hold; 373 } 374 break; 375 376 case HILIOCRT: 377 for (i = 0; i < 4; i++) { 378 send_hil_cmd(hilp->hl_addr, (cmd & 0xFF) + i, 379 NULL, 0, &hold); 380 data[i] = hold; 381 } 382 break; 383 384 case HILIOCID: 385 case HILIOCSC: 386 case HILIOCRN: 387 case HILIOCRS: 388 case HILIOCED: 389 send_hildev_cmd(hilp, device, (cmd & 0xFF)); 390 bcopy(hilp->hl_cmdbuf, data, hilp->hl_cmdbp-hilp->hl_cmdbuf); 391 break; 392 393 case HILIOCAROFF: 394 case HILIOCAR1: 395 case HILIOCAR2: 396 if (hilp->hl_kbddev) { 397 hilp->hl_cmddev = hilp->hl_kbddev; 398 send_hildev_cmd(hilp, hilp->hl_kbddev, (cmd & 0xFF)); 399 hilp->hl_kbdflags &= ~(KBD_AR1|KBD_AR2); 400 if (cmd == HILIOCAR1) 401 hilp->hl_kbdflags |= KBD_AR1; 402 else if (cmd == HILIOCAR2) 403 hilp->hl_kbdflags |= KBD_AR2; 404 } 405 break; 406 407 case HILIOCBEEP: 408 hilbeep(hilp, (struct _hilbell *)data); 409 break; 410 411 case FIONBIO: 412 dptr = &hilp->hl_device[device]; 413 if (*(int *)data) 414 dptr->hd_flags |= HIL_NOBLOCK; 415 else 416 dptr->hd_flags &= ~HIL_NOBLOCK; 417 break; 418 419 /* 420 * FIOASYNC must be present for FIONBIO above to work! 421 * (See fcntl in kern_descrip.c). 422 */ 423 case FIOASYNC: 424 break; 425 426 case HILIOCALLOCQ: 427 error = hilqalloc((struct hilqinfo *)data); 428 break; 429 430 case HILIOCFREEQ: 431 error = hilqfree(((struct hilqinfo *)data)->qid); 432 break; 433 434 case HILIOCMAPQ: 435 error = hilqmap(*(int *)data, device); 436 break; 437 438 case HILIOCUNMAPQ: 439 error = hilqunmap(*(int *)data, device); 440 break; 441 442 case HILIOCHPUX: 443 dptr = &hilp->hl_device[device]; 444 dptr->hd_flags |= HIL_READIN; 445 dptr->hd_flags &= ~HIL_QUEUEIN; 446 break; 447 448 case HILIOCRESET: 449 hilreset(hilp); 450 break; 451 452 #ifdef DEBUG 453 case HILIOCTEST: 454 hildebug = *(int *) data; 455 break; 456 #endif 457 458 default: 459 error = EINVAL; 460 break; 461 462 } 463 hilp->hl_cmddev = 0; 464 return(error); 465 } 466 467 #ifdef HPUXCOMPAT 468 /* ARGSUSED */ 469 hpuxhilioctl(dev, cmd, data, flag) 470 dev_t dev; 471 caddr_t data; 472 { 473 register struct hilloop *hilp = &hil0; /* XXX */ 474 char device = HILUNIT(dev); 475 struct hilloopdev *dptr; 476 register int i; 477 u_char hold; 478 479 hilp->hl_cmdbp = hilp->hl_cmdbuf; 480 bzero((caddr_t)hilp->hl_cmdbuf, HILBUFSIZE); 481 hilp->hl_cmddev = device; 482 switch (cmd) { 483 484 case HILSC: 485 case HILID: 486 case HILRN: 487 case HILRS: 488 case HILED: 489 case HILP1: 490 case HILP2: 491 case HILP3: 492 case HILP4: 493 case HILP5: 494 case HILP6: 495 case HILP7: 496 case HILP: 497 case HILA1: 498 case HILA2: 499 case HILA3: 500 case HILA4: 501 case HILA5: 502 case HILA6: 503 case HILA7: 504 case HILA: 505 send_hildev_cmd(hilp, device, (cmd & 0xFF)); 506 bcopy(hilp->hl_cmdbuf, data, hilp->hl_cmdbp-hilp->hl_cmdbuf); 507 break; 508 509 case HILDKR: 510 case HILER1: 511 case HILER2: 512 if (hilp->hl_kbddev) { 513 hilp->hl_cmddev = hilp->hl_kbddev; 514 send_hildev_cmd(hilp, hilp->hl_kbddev, (cmd & 0xFF)); 515 hilp->hl_kbdflags &= ~(KBD_AR1|KBD_AR2); 516 if (cmd == HILIOCAR1) 517 hilp->hl_kbdflags |= KBD_AR1; 518 else if (cmd == HILIOCAR2) 519 hilp->hl_kbdflags |= KBD_AR2; 520 } 521 break; 522 523 case EFTSBP: 524 /* Send four data bytes to the tone gererator. */ 525 send_hil_cmd(hilp->hl_addr, HIL_STARTCMD, data, 4, NULL); 526 /* Send the trigger beeper command to the 8042. */ 527 send_hil_cmd(hilp->hl_addr, (cmd & 0xFF), NULL, 0, NULL); 528 break; 529 530 case EFTRRT: 531 /* Transfer the real time to the 8042 data buffer */ 532 send_hil_cmd(hilp->hl_addr, (cmd & 0xFF), NULL, 0, NULL); 533 /* Read each byte of the real time */ 534 for (i = 0; i < 5; i++) { 535 send_hil_cmd(hilp->hl_addr, HIL_READTIME + i, NULL, 536 0, &hold); 537 data[4-i] = hold; 538 } 539 break; 540 541 case EFTRT: 542 for (i = 0; i < 4; i++) { 543 send_hil_cmd(hilp->hl_addr, (cmd & 0xFF) + i, 544 NULL, 0, &hold); 545 data[i] = hold; 546 } 547 break; 548 549 case EFTRLC: 550 case EFTRCC: 551 send_hil_cmd(hilp->hl_addr, (cmd & 0xFF), NULL, 0, &hold); 552 *data = hold; 553 break; 554 555 case EFTSRPG: 556 case EFTSRD: 557 case EFTSRR: 558 send_hil_cmd(hilp->hl_addr, (cmd & 0xFF), data, 1, NULL); 559 break; 560 561 case EFTSBI: 562 hilbeep(hilp, (struct _hilbell *)data); 563 break; 564 565 case FIONBIO: 566 dptr = &hilp->hl_device[device]; 567 if (*(int *)data) 568 dptr->hd_flags |= HIL_NOBLOCK; 569 else 570 dptr->hd_flags &= ~HIL_NOBLOCK; 571 break; 572 573 case FIOASYNC: 574 break; 575 576 default: 577 hilp->hl_cmddev = 0; 578 return(EINVAL); 579 } 580 hilp->hl_cmddev = 0; 581 return(0); 582 } 583 #endif 584 585 /* 586 * XXX: the mmap inteface for HIL devices should be rethought. 587 * We used it only briefly in conjuntion with shared queues 588 * (instead of HILIOCMAPQ ioctl). Perhaps mmap()ing a device 589 * should give a single queue per process. 590 */ 591 /* ARGSUSED */ 592 hilmap(dev, off, prot) 593 dev_t dev; 594 register int off; 595 { 596 #ifdef MMAP 597 struct proc *p = u.u_procp; /* XXX */ 598 register struct hilloop *hilp = &hil0; /* XXX */ 599 register struct hiliqueue *qp; 600 register int qnum; 601 602 /* 603 * Only allow mmap() on loop device 604 */ 605 if (HILUNIT(dev) != 0 || off >= NHILQ*sizeof(HILQ)) 606 return(-1); 607 /* 608 * Determine which queue we want based on the offset. 609 * Queue must belong to calling process. 610 */ 611 qp = &hilp->hl_queue[off / sizeof(HILQ)]; 612 if (qp->hq_procp != p) 613 return(-1); 614 615 off %= sizeof(HILQ); 616 return(kvtop((u_int)qp->hq_eventqueue + off) >> PGSHIFT); 617 #endif 618 } 619 620 /*ARGSUSED*/ 621 hilselect(dev, rw) 622 dev_t dev; 623 { 624 struct proc *p = u.u_procp; /* XXX */ 625 register struct hilloop *hilp = &hil0; /* XXX */ 626 register struct hilloopdev *dptr; 627 register struct hiliqueue *qp; 628 register int mask; 629 int s, device; 630 631 if (rw == FWRITE) 632 return (1); 633 device = HILUNIT(dev); 634 635 /* 636 * Read interface. 637 * Return 1 if there is something in the queue, 0 ow. 638 */ 639 dptr = &hilp->hl_device[device]; 640 if (dptr->hd_flags & HIL_READIN) { 641 s = splhil(); 642 if (dptr->hd_queue.c_cc) { 643 splx(s); 644 return (1); 645 } 646 if (dptr->hd_selr && 647 dptr->hd_selr->p_wchan == (caddr_t)&selwait) 648 dptr->hd_flags |= HIL_SELCOLL; 649 else 650 dptr->hd_selr = p; 651 splx(s); 652 return (0); 653 } 654 655 /* 656 * Make sure device is alive and real (or the loop device). 657 * Note that we do not do this for the read interface. 658 * This is primarily to be consistant with HP-UX. 659 */ 660 if (device && (dptr->hd_flags & (HIL_ALIVE|HIL_PSEUDO)) != HIL_ALIVE) 661 return (1); 662 663 /* 664 * Select on loop device is special. 665 * Check to see if there are any data for any loop device 666 * provided it is associated with a queue belonging to this user. 667 */ 668 if (device == 0) 669 mask = -1; 670 else 671 mask = hildevmask(device); 672 /* 673 * Must check everybody with interrupts blocked to prevent races. 674 */ 675 s = splhil(); 676 for (qp = hilp->hl_queue; qp < &hilp->hl_queue[NHILQ]; qp++) 677 if (qp->hq_procp == p && (mask & qp->hq_devmask) && 678 qp->hq_eventqueue->hil_evqueue.head != 679 qp->hq_eventqueue->hil_evqueue.tail) { 680 splx(s); 681 return (1); 682 } 683 684 if (dptr->hd_selr && dptr->hd_selr->p_wchan == (caddr_t)&selwait) 685 dptr->hd_flags |= HIL_SELCOLL; 686 else 687 dptr->hd_selr = p; 688 splx(s); 689 return (0); 690 } 691 692 hilint() 693 { 694 struct hilloop *hilp = &hil0; /* XXX */ 695 register struct hil_dev *hildevice = hilp->hl_addr; 696 u_char c, stat; 697 698 stat = hildevice->hil_stat; 699 c = hildevice->hil_data; /* clears interrupt */ 700 hil_process_int(stat, c); 701 } 702 703 #include "ite.h" 704 705 hil_process_int(stat, c) 706 register u_char stat, c; 707 { 708 register struct hilloop *hilp; 709 710 #ifdef DEBUG 711 if (hildebug & HDB_EVENTS) 712 printf("hilint: %x %x\n", stat, c); 713 #endif 714 715 /* the shift enables the compiler to generate a jump table */ 716 switch ((stat>>HIL_SSHIFT) & HIL_SMASK) { 717 718 #if NITE > 0 719 case HIL_KEY: 720 case HIL_SHIFT: 721 case HIL_CTRL: 722 case HIL_CTRLSHIFT: 723 itefilter(stat, c); 724 return; 725 #endif 726 727 case HIL_STATUS: /* The status info. */ 728 hilp = &hil0; /* XXX */ 729 if (c & HIL_ERROR) { 730 hilp->hl_cmddone = TRUE; 731 if (c == HIL_RECONFIG) 732 hilconfig(hilp); 733 break; 734 } 735 if (c & HIL_COMMAND) { 736 if (c & HIL_POLLDATA) /* End of data */ 737 hilevent(hilp); 738 else /* End of command */ 739 hilp->hl_cmdending = TRUE; 740 hilp->hl_actdev = 0; 741 } else { 742 if (c & HIL_POLLDATA) { /* Start of polled data */ 743 if (hilp->hl_actdev != 0) 744 hilevent(hilp); 745 hilp->hl_actdev = (c & HIL_DEVMASK); 746 hilp->hl_pollbp = hilp->hl_pollbuf; 747 } else { /* Start of command */ 748 if (hilp->hl_cmddev == (c & HIL_DEVMASK)) { 749 hilp->hl_cmdbp = hilp->hl_cmdbuf; 750 hilp->hl_actdev = 0; 751 } 752 } 753 } 754 return; 755 756 case HIL_DATA: 757 hilp = &hil0; /* XXX */ 758 if (hilp->hl_actdev != 0) /* Collecting poll data */ 759 *hilp->hl_pollbp++ = c; 760 else if (hilp->hl_cmddev != 0) /* Collecting cmd data */ 761 if (hilp->hl_cmdending) { 762 hilp->hl_cmddone = TRUE; 763 hilp->hl_cmdending = FALSE; 764 } else 765 *hilp->hl_cmdbp++ = c; 766 return; 767 768 case 0: /* force full jump table */ 769 default: 770 return; 771 } 772 } 773 774 #if defined(DEBUG) && !defined(PANICBUTTON) 775 #define PANICBUTTON 776 #endif 777 778 /* 779 * Optimized macro to compute: 780 * eq->head == (eq->tail + 1) % eq->size 781 * i.e. has tail caught up with head. We do this because 32 bit long 782 * remaidering is expensive (a function call with our compiler). 783 */ 784 #define HQFULL(eq) (((eq)->head?(eq)->head:(eq)->size) == (eq)->tail+1) 785 #define HQVALID(eq) \ 786 ((eq)->size == HEVQSIZE && (eq)->tail >= 0 && (eq)->tail < HEVQSIZE) 787 788 hilevent(hilp) 789 struct hilloop *hilp; 790 { 791 register struct hilloopdev *dptr = &hilp->hl_device[hilp->hl_actdev]; 792 register int len, mask, qnum; 793 register u_char *cp, *pp; 794 register HILQ *hq; 795 struct timeval ourtime; 796 hil_packet *proto; 797 int s, len0; 798 long tenths; 799 800 #ifdef PANICBUTTON 801 static int first; 802 extern int panicbutton; 803 804 cp = hilp->hl_pollbuf; 805 if (panicbutton && (*cp & HIL_KBDDATA)) { 806 if (*++cp == 0x4E) 807 first = 1; 808 else if (first && *cp == 0x46 && !panicstr) 809 panic("are we having fun yet?"); 810 else 811 first = 0; 812 } 813 #endif 814 #ifdef DEBUG 815 if (hildebug & HDB_EVENTS) { 816 printf("hilevent: dev %d pollbuf: ", hilp->hl_actdev); 817 printhilpollbuf(hilp); 818 printf("\n"); 819 } 820 #endif 821 822 /* 823 * Note that HIL_READIN effectively "shuts off" any queues 824 * that may have been in use at the time of an HILIOCHPUX call. 825 */ 826 if (dptr->hd_flags & HIL_READIN) { 827 hpuxhilevent(hilp, dptr); 828 return; 829 } 830 831 /* 832 * If this device isn't on any queue or there are no data 833 * in the packet (can this happen?) do nothing. 834 */ 835 if (dptr->hd_qmask == 0 || 836 (len0 = hilp->hl_pollbp - hilp->hl_pollbuf) <= 0) 837 return; 838 839 /* 840 * Everybody gets the same time stamp 841 */ 842 s = splclock(); 843 ourtime = time; 844 splx(s); 845 tenths = (ourtime.tv_sec * 100) + (ourtime.tv_usec / 10000); 846 847 proto = NULL; 848 mask = dptr->hd_qmask; 849 for (qnum = 0; mask; qnum++) { 850 if ((mask & hilqmask(qnum)) == 0) 851 continue; 852 mask &= ~hilqmask(qnum); 853 hq = hilp->hl_queue[qnum].hq_eventqueue; 854 855 /* 856 * Ensure that queue fields that we rely on are valid 857 * and that there is space in the queue. If either 858 * test fails, we just skip this queue. 859 */ 860 if (!HQVALID(&hq->hil_evqueue) || HQFULL(&hq->hil_evqueue)) 861 continue; 862 863 /* 864 * Copy data to queue. 865 * If this is the first queue we construct the packet 866 * with length, timestamp and poll buffer data. 867 * For second and sucessive packets we just duplicate 868 * the first packet. 869 */ 870 pp = (u_char *) &hq->hil_event[hq->hil_evqueue.tail]; 871 if (proto == NULL) { 872 proto = (hil_packet *)pp; 873 cp = hilp->hl_pollbuf; 874 len = len0; 875 *pp++ = len + 6; 876 *pp++ = hilp->hl_actdev; 877 *(long *)pp = tenths; 878 pp += sizeof(long); 879 do *pp++ = *cp++; while (--len); 880 } else 881 *(hil_packet *)pp = *proto; 882 883 if (++hq->hil_evqueue.tail == hq->hil_evqueue.size) 884 hq->hil_evqueue.tail = 0; 885 } 886 887 /* 888 * Wake up anyone selecting on this device or the loop itself 889 */ 890 if (dptr->hd_selr) { 891 selwakeup(dptr->hd_selr, dptr->hd_flags & HIL_SELCOLL); 892 dptr->hd_selr = NULL; 893 dptr->hd_flags &= ~HIL_SELCOLL; 894 } 895 dptr = &hilp->hl_device[HILLOOPDEV]; 896 if (dptr->hd_selr) { 897 selwakeup(dptr->hd_selr, dptr->hd_flags & HIL_SELCOLL); 898 dptr->hd_selr = NULL; 899 dptr->hd_flags &= ~HIL_SELCOLL; 900 } 901 } 902 903 #undef HQFULL 904 905 hpuxhilevent(hilp, dptr) 906 register struct hilloop *hilp; 907 register struct hilloopdev *dptr; 908 { 909 register int len; 910 struct timeval ourtime; 911 long tstamp; 912 int s; 913 914 /* 915 * Everybody gets the same time stamp 916 */ 917 s = splclock(); 918 ourtime = time; 919 splx(s); 920 tstamp = (ourtime.tv_sec * 100) + (ourtime.tv_usec / 10000); 921 922 /* 923 * Each packet that goes into the buffer must be preceded by the 924 * number of bytes in the packet, and the timestamp of the packet. 925 * This adds 5 bytes to the packet size. Make sure there is enough 926 * room in the buffer for it, and if not, toss the packet. 927 */ 928 len = hilp->hl_pollbp - hilp->hl_pollbuf; 929 if (dptr->hd_queue.c_cc <= (HILMAXCLIST - (len+5))) { 930 putc(len+5, &dptr->hd_queue); 931 (void) b_to_q((char *)&tstamp, sizeof tstamp, &dptr->hd_queue); 932 (void) b_to_q((char *)hilp->hl_pollbuf, len, &dptr->hd_queue); 933 } 934 935 /* 936 * Wake up any one blocked on a read or select 937 */ 938 if (dptr->hd_flags & HIL_ASLEEP) { 939 dptr->hd_flags &= ~HIL_ASLEEP; 940 wakeup((caddr_t)dptr); 941 } 942 if (dptr->hd_selr) { 943 selwakeup(dptr->hd_selr, dptr->hd_flags & HIL_SELCOLL); 944 dptr->hd_selr = NULL; 945 dptr->hd_flags &= ~HIL_SELCOLL; 946 } 947 } 948 949 /* 950 * Shared queue manipulation routines 951 */ 952 953 hilqalloc(qip) 954 struct hilqinfo *qip; 955 { 956 struct proc *p = u.u_procp; /* XXX */ 957 958 #ifdef DEBUG 959 if (hildebug & HDB_FOLLOW) 960 printf("hilqalloc(%d): addr %x\n", p->p_pid, qip->addr); 961 #endif 962 return(EINVAL); 963 } 964 965 hilqfree(qnum) 966 register int qnum; 967 { 968 struct proc *p = u.u_procp; /* XXX */ 969 970 #ifdef DEBUG 971 if (hildebug & HDB_FOLLOW) 972 printf("hilqfree(%d): qnum %d\n", p->p_pid, qnum); 973 #endif 974 return(EINVAL); 975 } 976 977 hilqmap(qnum, device) 978 register int qnum, device; 979 { 980 struct proc *p = u.u_procp; /* XXX */ 981 register struct hilloop *hilp = &hil0; /* XXX */ 982 register struct hilloopdev *dptr = &hilp->hl_device[device]; 983 int s; 984 985 #ifdef DEBUG 986 if (hildebug & HDB_FOLLOW) 987 printf("hilqmap(%d): qnum %d device %x\n", 988 p->p_pid, qnum, device); 989 #endif 990 if (qnum >= NHILQ || hilp->hl_queue[qnum].hq_procp != p) 991 return(EINVAL); 992 if ((dptr->hd_flags & HIL_QUEUEIN) == 0) 993 return(EINVAL); 994 if (dptr->hd_qmask && u.u_uid && u.u_uid != dptr->hd_uid) 995 return(EPERM); 996 997 hilp->hl_queue[qnum].hq_devmask |= hildevmask(device); 998 if (dptr->hd_qmask == 0) 999 dptr->hd_uid = u.u_uid; 1000 s = splhil(); 1001 dptr->hd_qmask |= hilqmask(qnum); 1002 splx(s); 1003 #ifdef DEBUG 1004 if (hildebug & HDB_MASK) 1005 printf("hilqmap(%d): devmask %x qmask %x\n", 1006 p->p_pid, hilp->hl_queue[qnum].hq_devmask, 1007 dptr->hd_qmask); 1008 #endif 1009 return(0); 1010 } 1011 1012 hilqunmap(qnum, device) 1013 register int qnum, device; 1014 { 1015 struct proc *p = u.u_procp; /* XXX */ 1016 register struct hilloop *hilp = &hil0; /* XXX */ 1017 int s; 1018 1019 #ifdef DEBUG 1020 if (hildebug & HDB_FOLLOW) 1021 printf("hilqunmap(%d): qnum %d device %x\n", 1022 p->p_pid, qnum, device); 1023 #endif 1024 1025 if (qnum >= NHILQ || hilp->hl_queue[qnum].hq_procp != p) 1026 return(EINVAL); 1027 1028 hilp->hl_queue[qnum].hq_devmask &= ~hildevmask(device); 1029 s = splhil(); 1030 hilp->hl_device[device].hd_qmask &= ~hilqmask(qnum); 1031 splx(s); 1032 #ifdef DEBUG 1033 if (hildebug & HDB_MASK) 1034 printf("hilqunmap(%d): devmask %x qmask %x\n", 1035 p->p_pid, hilp->hl_queue[qnum].hq_devmask, 1036 hilp->hl_device[device].hd_qmask); 1037 #endif 1038 return(0); 1039 } 1040 1041 #include "sys/clist.h" 1042 1043 /* 1044 * This is just a copy of the virgin q_to_b routine with minor 1045 * optimizations for HIL use. It is used for two reasons: 1046 * 1. If we have PAGE mode defined, the normal q_to_b processes 1047 * chars one at a time and breaks on newlines. 1048 * 2. We don't have to raise the priority to spltty() for most 1049 * of the clist manipulations. 1050 */ 1051 hilq_to_b(q, cp, cc) 1052 register struct clist *q; 1053 register char *cp; 1054 { 1055 register struct cblock *bp; 1056 register int nc; 1057 char *acp; 1058 int s; 1059 extern char cwaiting; 1060 1061 if (cc <= 0) 1062 return (0); 1063 s = splhil(); 1064 if (q->c_cc <= 0) { 1065 q->c_cc = 0; 1066 q->c_cf = q->c_cl = NULL; 1067 splx(s); 1068 return (0); 1069 } 1070 acp = cp; 1071 1072 while (cc) { 1073 nc = sizeof (struct cblock) - ((int)q->c_cf & CROUND); 1074 nc = MIN(nc, cc); 1075 nc = MIN(nc, q->c_cc); 1076 (void) bcopy(q->c_cf, cp, (unsigned)nc); 1077 q->c_cf += nc; 1078 q->c_cc -= nc; 1079 cc -= nc; 1080 cp += nc; 1081 if (q->c_cc <= 0) { 1082 bp = (struct cblock *)(q->c_cf - 1); 1083 bp = (struct cblock *)((int)bp & ~CROUND); 1084 q->c_cf = q->c_cl = NULL; 1085 spltty(); 1086 bp->c_next = cfreelist; 1087 cfreelist = bp; 1088 cfreecount += CBSIZE; 1089 if (cwaiting) { 1090 wakeup(&cwaiting); 1091 cwaiting = 0; 1092 } 1093 break; 1094 } 1095 if (((int)q->c_cf & CROUND) == 0) { 1096 bp = (struct cblock *)(q->c_cf); 1097 bp--; 1098 q->c_cf = bp->c_next->c_info; 1099 spltty(); 1100 bp->c_next = cfreelist; 1101 cfreelist = bp; 1102 cfreecount += CBSIZE; 1103 if (cwaiting) { 1104 wakeup(&cwaiting); 1105 cwaiting = 0; 1106 } 1107 splhil(); 1108 } 1109 } 1110 splx(s); 1111 return (cp-acp); 1112 } 1113 1114 /* 1115 * Cooked keyboard functions for ite driver. 1116 * There is only one "cooked" ITE keyboard (the first keyboard found) 1117 * per loop. There may be other keyboards, but they will always be "raw". 1118 */ 1119 1120 kbdbell() 1121 { 1122 struct hilloop *hilp = &hil0; /* XXX */ 1123 1124 hilbeep(hilp, &default_bell); 1125 } 1126 1127 kbdenable() 1128 { 1129 struct hilloop *hilp = &hil0; /* XXX */ 1130 register struct hil_dev *hildevice = hilp->hl_addr; 1131 char db; 1132 1133 /* Set the autorepeat rate register */ 1134 db = ar_format(KBD_ARR); 1135 send_hil_cmd(hildevice, HIL_SETARR, &db, 1, NULL); 1136 1137 /* Set the autorepeat delay register */ 1138 db = ar_format(KBD_ARD); 1139 send_hil_cmd(hildevice, HIL_SETARD, &db, 1, NULL); 1140 1141 /* Enable interrupts */ 1142 send_hil_cmd(hildevice, HIL_INTON, NULL, 0, NULL); 1143 } 1144 1145 kbddisable() 1146 { 1147 } 1148 1149 /* 1150 * XXX: read keyboard directly and return code. 1151 * Used by console getchar routine. Could really screw up anybody 1152 * reading from the keyboard in the normal, interrupt driven fashion. 1153 */ 1154 kbdgetc(statp) 1155 int *statp; 1156 { 1157 struct hilloop *hilp = &hil0; /* XXX */ 1158 register struct hil_dev *hildevice = hilp->hl_addr; 1159 register int c, stat; 1160 int s; 1161 1162 s = splhil(); 1163 while (((stat = hildevice->hil_stat) & HIL_DATA_RDY) == 0) 1164 ; 1165 c = hildevice->hil_data; 1166 splx(s); 1167 *statp = stat; 1168 return(c); 1169 } 1170 1171 /* 1172 * Recoginize and clear keyboard generated NMIs. 1173 * Returns 1 if it was ours, 0 otherwise. Note that we cannot use 1174 * send_hil_cmd() to issue the clear NMI command as that would actually 1175 * lower the priority to splimp() and it doesn't wait for the completion 1176 * of the command. Either of these conditions could result in the 1177 * interrupt reoccuring. Note that we issue the CNMT command twice. 1178 * This seems to be needed, once is not always enough!?! 1179 */ 1180 kbdnmi() 1181 { 1182 register struct hilloop *hilp = &hil0; /* XXX */ 1183 1184 if ((*KBDNMISTAT & KBDNMI) == 0) 1185 return(0); 1186 HILWAIT(hilp->hl_addr); 1187 hilp->hl_addr->hil_cmd = HIL_CNMT; 1188 HILWAIT(hilp->hl_addr); 1189 hilp->hl_addr->hil_cmd = HIL_CNMT; 1190 HILWAIT(hilp->hl_addr); 1191 return(1); 1192 } 1193 1194 #define HILSECURITY 0x33 1195 #define HILIDENTIFY 0x03 1196 #define HILSCBIT 0x04 1197 1198 /* 1199 * Called at boot time to print out info about interesting devices 1200 */ 1201 hilinfo(hilp) 1202 register struct hilloop *hilp; 1203 { 1204 register int id, len; 1205 register struct kbdmap *km; 1206 1207 /* 1208 * Keyboard info. 1209 */ 1210 if (hilp->hl_kbddev) { 1211 printf("hil%d: ", hilp->hl_kbddev); 1212 for (km = kbd_map; km->kbd_code; km++) 1213 if (km->kbd_code == hilp->hl_kbdlang) { 1214 printf("%s ", km->kbd_desc); 1215 break; 1216 } 1217 printf("keyboard\n"); 1218 } 1219 /* 1220 * ID module. 1221 * Attempt to locate the first ID module and print out its 1222 * security code. Is this a good idea?? 1223 */ 1224 id = hiliddev(hilp); 1225 if (id) { 1226 hilp->hl_cmdbp = hilp->hl_cmdbuf; 1227 hilp->hl_cmddev = id; 1228 send_hildev_cmd(hilp, id, HILSECURITY); 1229 len = hilp->hl_cmdbp - hilp->hl_cmdbuf; 1230 hilp->hl_cmdbp = hilp->hl_cmdbuf; 1231 hilp->hl_cmddev = 0; 1232 printf("hil%d: security code", id); 1233 for (id = 0; id < len; id++) 1234 printf(" %x", hilp->hl_cmdbuf[id]); 1235 while (id++ < 16) 1236 printf(" 0"); 1237 printf("\n"); 1238 } 1239 } 1240 1241 #define HILAR1 0x3E 1242 #define HILAR2 0x3F 1243 1244 /* 1245 * Called after the loop has reconfigured. Here we need to: 1246 * - determine how many devices are on the loop 1247 * (some may have been added or removed) 1248 * - locate the ITE keyboard (if any) and ensure 1249 * that it is in the proper state (raw or cooked) 1250 * and is set to use the proper language mapping table 1251 * - ensure all other keyboards are raw 1252 * Note that our device state is now potentially invalid as 1253 * devices may no longer be where they were. What we should 1254 * do here is either track where the devices went and move 1255 * state around accordingly or, more simply, just mark all 1256 * devices as HIL_DERROR and don't allow any further use until 1257 * they are closed. This is a little too brutal for my tastes, 1258 * we prefer to just assume people won't move things around. 1259 */ 1260 hilconfig(hilp) 1261 register struct hilloop *hilp; 1262 { 1263 u_char db; 1264 int s; 1265 1266 s = splhil(); 1267 #ifdef DEBUG 1268 if (hildebug & HDB_CONFIG) { 1269 printf("hilconfig: reconfigured: "); 1270 send_hil_cmd(hilp->hl_addr, HIL_READLPSTAT, NULL, 0, &db); 1271 printf("LPSTAT %x, ", db); 1272 send_hil_cmd(hilp->hl_addr, HIL_READLPCTRL, NULL, 0, &db); 1273 printf("LPCTRL %x, ", db); 1274 send_hil_cmd(hilp->hl_addr, HIL_READKBDSADR, NULL, 0, &db); 1275 printf("KBDSADR %x\n", db); 1276 hilreport(hilp); 1277 } 1278 #endif 1279 /* 1280 * Determine how many devices are on the loop. 1281 * Mark those as alive and real, all others as dead. 1282 */ 1283 db = 0; 1284 send_hil_cmd(hilp->hl_addr, HIL_READLPSTAT, NULL, 0, &db); 1285 hilp->hl_maxdev = db & LPS_DEVMASK; 1286 for (db = 1; db < NHILD; db++) { 1287 if (db <= hilp->hl_maxdev) 1288 hilp->hl_device[db].hd_flags |= HIL_ALIVE; 1289 else 1290 hilp->hl_device[db].hd_flags &= ~HIL_ALIVE; 1291 hilp->hl_device[db].hd_flags &= ~HIL_PSEUDO; 1292 } 1293 #ifdef DEBUG 1294 if (hildebug & (HDB_CONFIG|HDB_KEYBOARD)) 1295 printf("hilconfig: max device %d\n", hilp->hl_maxdev); 1296 #endif 1297 if (hilp->hl_maxdev == 0) { 1298 hilp->hl_kbddev = 0; 1299 splx(s); 1300 return; 1301 } 1302 /* 1303 * Find out where the keyboards are and record the ITE keyboard 1304 * (first one found). If no keyboards found, we are all done. 1305 */ 1306 db = 0; 1307 send_hil_cmd(hilp->hl_addr, HIL_READKBDSADR, NULL, 0, &db); 1308 #ifdef DEBUG 1309 if (hildebug & HDB_KEYBOARD) 1310 printf("hilconfig: keyboard: KBDSADR %x, old %d, new %d\n", 1311 db, hilp->hl_kbddev, ffs((int)db)); 1312 #endif 1313 hilp->hl_kbddev = ffs((int)db); 1314 if (hilp->hl_kbddev == 0) { 1315 splx(s); 1316 return; 1317 } 1318 /* 1319 * Determine if the keyboard should be cooked or raw and configure it. 1320 */ 1321 db = (hilp->hl_kbdflags & KBD_RAW) ? 0 : 1 << (hilp->hl_kbddev - 1); 1322 send_hil_cmd(hilp->hl_addr, HIL_WRITEKBDSADR, &db, 1, NULL); 1323 /* 1324 * Re-enable autorepeat in raw mode, cooked mode AR is not affected. 1325 */ 1326 if (hilp->hl_kbdflags & (KBD_AR1|KBD_AR2)) { 1327 db = (hilp->hl_kbdflags & KBD_AR1) ? HILAR1 : HILAR2; 1328 hilp->hl_cmddev = hilp->hl_kbddev; 1329 send_hildev_cmd(hilp, hilp->hl_kbddev, db); 1330 hilp->hl_cmddev = 0; 1331 } 1332 /* 1333 * Determine the keyboard language configuration, but don't 1334 * override a user-specified setting. 1335 */ 1336 db = 0; 1337 send_hil_cmd(hilp->hl_addr, HIL_READKBDLANG, NULL, 0, &db); 1338 #ifdef DEBUG 1339 if (hildebug & HDB_KEYBOARD) 1340 printf("hilconfig: language: old %x new %x\n", 1341 hilp->hl_kbdlang, db); 1342 #endif 1343 if (hilp->hl_kbdlang != KBD_SPECIAL) { 1344 struct kbdmap *km; 1345 1346 for (km = kbd_map; km->kbd_code; km++) 1347 if (km->kbd_code == db) { 1348 hilp->hl_kbdlang = db; 1349 /* XXX */ 1350 kbd_keymap = km->kbd_keymap; 1351 kbd_shiftmap = km->kbd_shiftmap; 1352 kbd_ctrlmap = km->kbd_ctrlmap; 1353 kbd_ctrlshiftmap = km->kbd_ctrlshiftmap; 1354 kbd_stringmap = km->kbd_stringmap; 1355 } 1356 } 1357 splx(s); 1358 } 1359 1360 hilreset(hilp) 1361 struct hilloop *hilp; 1362 { 1363 register struct hil_dev *hildevice = hilp->hl_addr; 1364 u_char db; 1365 1366 /* 1367 * Initialize the loop: reconfigure, don't report errors, 1368 * cook keyboards, and enable autopolling. 1369 */ 1370 db = LPC_RECONF | LPC_KBDCOOK | LPC_NOERROR | LPC_AUTOPOLL; 1371 send_hil_cmd(hildevice, HIL_WRITELPCTRL, &db, 1, NULL); 1372 /* 1373 * Delay one second for reconfiguration and then read the the 1374 * data register to clear the interrupt (if the loop reconfigured). 1375 */ 1376 DELAY(1000000); 1377 if (hildevice->hil_stat & HIL_DATA_RDY) 1378 db = hildevice->hil_data; 1379 /* 1380 * The HIL loop may have reconfigured. If so we proceed on, 1381 * if not we loop until a successful reconfiguration is reported 1382 * back to us. The HIL loop will continue to attempt forever. 1383 * Probably not very smart. 1384 */ 1385 do { 1386 send_hil_cmd(hildevice, HIL_READLPSTAT, NULL, 0, &db); 1387 } while ((db & (LPS_CONFFAIL|LPS_CONFGOOD)) == 0); 1388 /* 1389 * At this point, the loop should have reconfigured. 1390 * The reconfiguration interrupt has already called hilconfig() 1391 * so the keyboard has been determined. 1392 */ 1393 send_hil_cmd(hildevice, HIL_INTON, NULL, 0, NULL); 1394 } 1395 1396 hilbeep(hilp, bp) 1397 struct hilloop *hilp; 1398 register struct _hilbell *bp; 1399 { 1400 u_char buf[2]; 1401 1402 buf[0] = ~((bp->duration - 10) / 10); 1403 buf[1] = bp->frequency; 1404 send_hil_cmd(hilp->hl_addr, HIL_SETTONE, buf, 2, NULL); 1405 } 1406 1407 /* 1408 * Locate and return the address of the first ID module, 0 if none present. 1409 */ 1410 hiliddev(hilp) 1411 register struct hilloop *hilp; 1412 { 1413 register int i, len; 1414 1415 #ifdef DEBUG 1416 if (hildebug & HDB_IDMODULE) 1417 printf("hiliddev(%x): looking for idmodule...", hilp); 1418 #endif 1419 for (i = 1; i <= hilp->hl_maxdev; i++) { 1420 hilp->hl_cmdbp = hilp->hl_cmdbuf; 1421 hilp->hl_cmddev = i; 1422 send_hildev_cmd(hilp, i, HILIDENTIFY); 1423 /* 1424 * XXX: the final condition checks to ensure that the 1425 * device ID byte is in the range of the ID module (0x30-0x3F) 1426 */ 1427 len = hilp->hl_cmdbp - hilp->hl_cmdbuf; 1428 if (len > 1 && (hilp->hl_cmdbuf[1] & HILSCBIT) && 1429 (hilp->hl_cmdbuf[0] & 0xF0) == 0x30) { 1430 hilp->hl_cmdbp = hilp->hl_cmdbuf; 1431 hilp->hl_cmddev = i; 1432 send_hildev_cmd(hilp, i, HILSECURITY); 1433 break; 1434 } 1435 } 1436 hilp->hl_cmdbp = hilp->hl_cmdbuf; 1437 hilp->hl_cmddev = 0; 1438 #ifdef DEBUG 1439 if (hildebug & HDB_IDMODULE) 1440 if (i <= hilp->hl_maxdev) 1441 printf("found at %d\n", i); 1442 else 1443 printf("not found\n"); 1444 #endif 1445 return(i <= hilp->hl_maxdev ? i : 0); 1446 } 1447 1448 /* 1449 * Low level routines which actually talk to the 8042 chip. 1450 */ 1451 1452 /* 1453 * Send a command to the 8042 with zero or more bytes of data. 1454 * If rdata is non-null, wait for and return a byte of data. 1455 * We run at splimp() to make the transaction as atomic as 1456 * possible without blocking the clock (is this necessary?) 1457 */ 1458 send_hil_cmd(hildevice, cmd, data, dlen, rdata) 1459 register struct hil_dev *hildevice; 1460 u_char cmd, *data, dlen; 1461 u_char *rdata; 1462 { 1463 u_char status; 1464 int s = splimp(); 1465 1466 HILWAIT(hildevice); 1467 hildevice->hil_cmd = cmd; 1468 while (dlen--) { 1469 HILWAIT(hildevice); 1470 hildevice->hil_data = *data++; 1471 } 1472 if (rdata) { 1473 do { 1474 HILDATAWAIT(hildevice); 1475 status = hildevice->hil_stat; 1476 *rdata = hildevice->hil_data; 1477 } while (((status >> HIL_SSHIFT) & HIL_SMASK) != HIL_68K); 1478 } 1479 splx(s); 1480 } 1481 1482 /* 1483 * Send a command to a device on the loop. 1484 * Since only one command can be active on the loop at any time, 1485 * we must ensure that we are not interrupted during this process. 1486 * Hence we mask interrupts to prevent potential access from most 1487 * interrupt routines and turn off auto-polling to disable the 1488 * internally generated poll commands. 1489 * 1490 * splhigh is extremely conservative but insures atomic operation, 1491 * splimp (clock only interrupts) seems to be good enough in practice. 1492 */ 1493 send_hildev_cmd(hilp, device, cmd) 1494 register struct hilloop *hilp; 1495 char device, cmd; 1496 { 1497 register struct hil_dev *hildevice = hilp->hl_addr; 1498 u_char status, c; 1499 int s = splimp(); 1500 1501 polloff(hildevice); 1502 1503 /* 1504 * Transfer the command and device info to the chip 1505 */ 1506 HILWAIT(hildevice); 1507 hildevice->hil_cmd = HIL_STARTCMD; 1508 HILWAIT(hildevice); 1509 hildevice->hil_data = 8 + device; 1510 HILWAIT(hildevice); 1511 hildevice->hil_data = cmd; 1512 HILWAIT(hildevice); 1513 hildevice->hil_data = HIL_TIMEOUT; 1514 /* 1515 * Trigger the command and wait for completion 1516 */ 1517 HILWAIT(hildevice); 1518 hildevice->hil_cmd = HIL_TRIGGER; 1519 hilp->hl_cmddone = FALSE; 1520 do { 1521 HILDATAWAIT(hildevice); 1522 status = hildevice->hil_stat; 1523 c = hildevice->hil_data; 1524 hil_process_int(status, c); 1525 } while (!hilp->hl_cmddone); 1526 1527 pollon(hildevice); 1528 splx(s); 1529 } 1530 1531 /* 1532 * Turn auto-polling off and on. 1533 * Also disables and enable auto-repeat. Why? 1534 */ 1535 polloff(hildevice) 1536 register struct hil_dev *hildevice; 1537 { 1538 register char db; 1539 1540 /* 1541 * Turn off auto repeat 1542 */ 1543 HILWAIT(hildevice); 1544 hildevice->hil_cmd = HIL_SETARR; 1545 HILWAIT(hildevice); 1546 hildevice->hil_data = 0; 1547 /* 1548 * Turn off auto-polling 1549 */ 1550 HILWAIT(hildevice); 1551 hildevice->hil_cmd = HIL_READLPCTRL; 1552 HILDATAWAIT(hildevice); 1553 db = hildevice->hil_data; 1554 db &= ~LPC_AUTOPOLL; 1555 HILWAIT(hildevice); 1556 hildevice->hil_cmd = HIL_WRITELPCTRL; 1557 HILWAIT(hildevice); 1558 hildevice->hil_data = db; 1559 /* 1560 * Must wait til polling is really stopped 1561 */ 1562 do { 1563 HILWAIT(hildevice); 1564 hildevice->hil_cmd = HIL_READBUSY; 1565 HILDATAWAIT(hildevice); 1566 db = hildevice->hil_data; 1567 } while (db & BSY_LOOPBUSY); 1568 } 1569 1570 pollon(hildevice) 1571 register struct hil_dev *hildevice; 1572 { 1573 register char db; 1574 1575 /* 1576 * Turn on auto polling 1577 */ 1578 HILWAIT(hildevice); 1579 hildevice->hil_cmd = HIL_READLPCTRL; 1580 HILDATAWAIT(hildevice); 1581 db = hildevice->hil_data; 1582 db |= LPC_AUTOPOLL; 1583 HILWAIT(hildevice); 1584 hildevice->hil_cmd = HIL_WRITELPCTRL; 1585 HILWAIT(hildevice); 1586 hildevice->hil_data = db; 1587 /* 1588 * Turn on auto repeat 1589 */ 1590 HILWAIT(hildevice); 1591 hildevice->hil_cmd = HIL_SETARR; 1592 HILWAIT(hildevice); 1593 hildevice->hil_data = ar_format(KBD_ARR); 1594 } 1595 1596 #ifdef DEBUG 1597 printhilpollbuf(hilp) 1598 register struct hilloop *hilp; 1599 { 1600 register u_char *cp; 1601 register int i, len; 1602 1603 cp = hilp->hl_pollbuf; 1604 len = hilp->hl_pollbp - cp; 1605 for (i = 0; i < len; i++) 1606 printf("%x ", hilp->hl_pollbuf[i]); 1607 printf("\n"); 1608 } 1609 1610 printhilcmdbuf(hilp) 1611 register struct hilloop *hilp; 1612 { 1613 register u_char *cp; 1614 register int i, len; 1615 1616 cp = hilp->hl_cmdbuf; 1617 len = hilp->hl_cmdbp - cp; 1618 for (i = 0; i < len; i++) 1619 printf("%x ", hilp->hl_cmdbuf[i]); 1620 printf("\n"); 1621 } 1622 1623 hilreport(hilp) 1624 register struct hilloop *hilp; 1625 { 1626 register int i, len; 1627 int s = splhil(); 1628 1629 for (i = 1; i <= hilp->hl_maxdev; i++) { 1630 hilp->hl_cmdbp = hilp->hl_cmdbuf; 1631 hilp->hl_cmddev = i; 1632 send_hildev_cmd(hilp, i, HILIDENTIFY); 1633 printf("hil%d: id: ", i); 1634 printhilcmdbuf(hilp); 1635 len = hilp->hl_cmdbp - hilp->hl_cmdbuf; 1636 if (len > 1 && (hilp->hl_cmdbuf[1] & HILSCBIT)) { 1637 hilp->hl_cmdbp = hilp->hl_cmdbuf; 1638 hilp->hl_cmddev = i; 1639 send_hildev_cmd(hilp, i, HILSECURITY); 1640 printf("hil%d: sc: ", i); 1641 printhilcmdbuf(hilp); 1642 } 1643 } 1644 hilp->hl_cmdbp = hilp->hl_cmdbuf; 1645 hilp->hl_cmddev = 0; 1646 splx(s); 1647 } 1648 #endif 1649