mse.c revision 32726
1/* 2 * Copyright 1992 by the University of Guelph 3 * 4 * Permission to use, copy and modify this 5 * software and its documentation for any purpose and without 6 * fee is hereby granted, provided that the above copyright 7 * notice appear in all copies and that both that copyright 8 * notice and this permission notice appear in supporting 9 * documentation. 10 * University of Guelph makes no representations about the suitability of 11 * this software for any purpose. It is provided "as is" 12 * without express or implied warranty. 13 * 14 * $Id: mse.c,v 1.36 1997/12/07 08:09:16 yokota Exp $ 15 */ 16/* 17 * Driver for the Logitech and ATI Inport Bus mice for use with 386bsd and 18 * the X386 port, courtesy of 19 * Rick Macklem, rick@snowhite.cis.uoguelph.ca 20 * Caveats: The driver currently uses spltty(), but doesn't use any 21 * generic tty code. It could use splmse() (that only masks off the 22 * bus mouse interrupt, but that would require hacking in i386/isa/icu.s. 23 * (This may be worth the effort, since the Logitech generates 30/60 24 * interrupts/sec continuously while it is open.) 25 * NB: The ATI has NOT been tested yet! 26 */ 27 28/* 29 * Modification history: 30 * Sep 6, 1994 -- Lars Fredriksen(fredriks@mcs.com) 31 * improved probe based on input from Logitech. 32 * 33 * Oct 19, 1992 -- E. Stark (stark@cs.sunysb.edu) 34 * fixes to make it work with Microsoft InPort busmouse 35 * 36 * Jan, 1993 -- E. Stark (stark@cs.sunysb.edu) 37 * added patches for new "select" interface 38 * 39 * May 4, 1993 -- E. Stark (stark@cs.sunysb.edu) 40 * changed position of some spl()'s in mseread 41 * 42 * October 8, 1993 -- E. Stark (stark@cs.sunysb.edu) 43 * limit maximum negative x/y value to -127 to work around XFree problem 44 * that causes spurious button pushes. 45 */ 46 47#include "mse.h" 48#if NMSE > 0 49#include "opt_devfs.h" 50 51#include <sys/param.h> 52#include <sys/systm.h> 53#include <sys/conf.h> 54#include <sys/kernel.h> 55#include <sys/poll.h> 56#include <sys/select.h> 57#include <sys/uio.h> 58#ifdef DEVFS 59#include <sys/devfsext.h> 60#endif /*DEVFS*/ 61 62#include <machine/clock.h> 63#include <machine/mouse.h> 64 65#include <i386/isa/isa_device.h> 66 67/* driver configuration flags (config) */ 68#define MSE_CONFIG_ACCEL 0x00f0 /* acceleration factor */ 69#define MSE_CONFIG_FLAGS (MSE_CONFIG_ACCEL) 70 71static int mseprobe(struct isa_device *); 72static int mseattach(struct isa_device *); 73 74struct isa_driver msedriver = { 75 mseprobe, mseattach, "mse" 76}; 77 78static d_open_t mseopen; 79static d_close_t mseclose; 80static d_read_t mseread; 81static d_ioctl_t mseioctl; 82static d_poll_t msepoll; 83 84#define CDEV_MAJOR 27 85static struct cdevsw mse_cdevsw = 86 { mseopen, mseclose, mseread, nowrite, /*27*/ 87 mseioctl, nostop, nullreset, nodevtotty,/* mse */ 88 msepoll, nommap, NULL, "mse", NULL, -1 }; 89 90 91/* 92 * Software control structure for mouse. The sc_enablemouse(), 93 * sc_disablemouse() and sc_getmouse() routines must be called spl'd(). 94 */ 95static struct mse_softc { 96 int sc_flags; 97 int sc_mousetype; 98 struct selinfo sc_selp; 99 u_int sc_port; 100 void (*sc_enablemouse) __P((u_int port)); 101 void (*sc_disablemouse) __P((u_int port)); 102 void (*sc_getmouse) __P((u_int port, int *dx, int *dy, int *but)); 103 int sc_deltax; 104 int sc_deltay; 105 int sc_obuttons; 106 int sc_buttons; 107 int sc_bytesread; 108 u_char sc_bytes[MOUSE_SYS_PACKETSIZE]; 109 mousehw_t hw; 110 mousemode_t mode; 111 mousestatus_t status; 112#ifdef DEVFS 113 void *devfs_token; 114 void *n_devfs_token; 115#endif 116} mse_sc[NMSE]; 117 118/* Flags */ 119#define MSESC_OPEN 0x1 120#define MSESC_WANT 0x2 121 122/* and Mouse Types */ 123#define MSE_NONE 0 /* don't move this! */ 124#define MSE_LOGITECH 0x1 125#define MSE_ATIINPORT 0x2 126#define MSE_LOGI_SIG 0xA5 127 128#define MSE_PORTA 0 129#define MSE_PORTB 1 130#define MSE_PORTC 2 131#define MSE_PORTD 3 132 133#define MSE_UNIT(dev) (minor(dev) >> 1) 134#define MSE_NBLOCKIO(dev) (minor(dev) & 0x1) 135 136/* 137 * Logitech bus mouse definitions 138 */ 139#define MSE_SETUP 0x91 /* What does this mean? */ 140 /* The definition for the control port */ 141 /* is as follows: */ 142 143 /* D7 = Mode set flag (1 = active) */ 144 /* D6,D5 = Mode selection (port A) */ 145 /* 00 = Mode 0 = Basic I/O */ 146 /* 01 = Mode 1 = Strobed I/O */ 147 /* 10 = Mode 2 = Bi-dir bus */ 148 /* D4 = Port A direction (1 = input)*/ 149 /* D3 = Port C (upper 4 bits) */ 150 /* direction. (1 = input) */ 151 /* D2 = Mode selection (port B & C) */ 152 /* 0 = Mode 0 = Basic I/O */ 153 /* 1 = Mode 1 = Strobed I/O */ 154 /* D1 = Port B direction (1 = input)*/ 155 /* D0 = Port C (lower 4 bits) */ 156 /* direction. (1 = input) */ 157 158 /* So 91 means Basic I/O on all 3 ports,*/ 159 /* Port A is an input port, B is an */ 160 /* output port, C is split with upper */ 161 /* 4 bits being an output port and lower*/ 162 /* 4 bits an input port, and enable the */ 163 /* sucker. */ 164 /* Courtesy Intel 8255 databook. Lars */ 165#define MSE_HOLD 0x80 166#define MSE_RXLOW 0x00 167#define MSE_RXHIGH 0x20 168#define MSE_RYLOW 0x40 169#define MSE_RYHIGH 0x60 170#define MSE_DISINTR 0x10 171#define MSE_INTREN 0x00 172 173static int mse_probelogi __P((struct isa_device *idp)); 174static void mse_disablelogi __P((u_int port)); 175static void mse_getlogi __P((u_int port, int *dx, int *dy, int *but)); 176static void mse_enablelogi __P((u_int port)); 177 178/* 179 * ATI Inport mouse definitions 180 */ 181#define MSE_INPORT_RESET 0x80 182#define MSE_INPORT_STATUS 0x00 183#define MSE_INPORT_DX 0x01 184#define MSE_INPORT_DY 0x02 185#define MSE_INPORT_MODE 0x07 186#define MSE_INPORT_HOLD 0x20 187#define MSE_INPORT_INTREN 0x09 188 189static int mse_probeati __P((struct isa_device *idp)); 190static void mse_enableati __P((u_int port)); 191static void mse_disableati __P((u_int port)); 192static void mse_getati __P((u_int port, int *dx, int *dy, int *but)); 193 194#define MSEPRI (PZERO + 3) 195 196/* 197 * Table of mouse types. 198 * Keep the Logitech last, since I haven't figured out how to probe it 199 * properly yet. (Someday I'll have the documentation.) 200 */ 201static struct mse_types { 202 int m_type; /* Type of bus mouse */ 203 int (*m_probe) __P((struct isa_device *idp)); 204 /* Probe routine to test for it */ 205 void (*m_enable) __P((u_int port)); 206 /* Start routine */ 207 void (*m_disable) __P((u_int port)); 208 /* Disable interrupts routine */ 209 void (*m_get) __P((u_int port, int *dx, int *dy, int *but)); 210 /* and get mouse status */ 211 mousehw_t m_hw; /* buttons iftype type model hwid */ 212 mousemode_t m_mode; /* proto rate res accel level size mask */ 213} mse_types[] = { 214 { MSE_ATIINPORT, 215 mse_probeati, mse_enableati, mse_disableati, mse_getati, 216 { 2, MOUSE_IF_INPORT, MOUSE_MOUSE, MOUSE_MODEL_GENERIC, 0, }, 217 { MOUSE_PROTO_INPORT, -1, -1, 0, 0, MOUSE_MSC_PACKETSIZE, 218 { MOUSE_MSC_SYNCMASK, MOUSE_MSC_SYNC, }, }, }, 219 { MSE_LOGITECH, 220 mse_probelogi, mse_enablelogi, mse_disablelogi, mse_getlogi, 221 { 2, MOUSE_IF_BUS, MOUSE_MOUSE, MOUSE_MODEL_GENERIC, 0, }, 222 { MOUSE_PROTO_BUS, -1, -1, 0, 0, MOUSE_MSC_PACKETSIZE, 223 { MOUSE_MSC_SYNCMASK, MOUSE_MSC_SYNC, }, }, }, 224 { 0, }, 225}; 226 227int 228mseprobe(idp) 229 register struct isa_device *idp; 230{ 231 register struct mse_softc *sc = &mse_sc[idp->id_unit]; 232 register int i; 233 234 /* 235 * Check for each mouse type in the table. 236 */ 237 i = 0; 238 while (mse_types[i].m_type) { 239 if ((*mse_types[i].m_probe)(idp)) { 240 sc->sc_mousetype = mse_types[i].m_type; 241 sc->sc_enablemouse = mse_types[i].m_enable; 242 sc->sc_disablemouse = mse_types[i].m_disable; 243 sc->sc_getmouse = mse_types[i].m_get; 244 sc->hw = mse_types[i].m_hw; 245 sc->mode = mse_types[i].m_mode; 246 return (1); 247 } 248 i++; 249 } 250 return (0); 251} 252 253int 254mseattach(idp) 255 struct isa_device *idp; 256{ 257 int unit = idp->id_unit; 258 struct mse_softc *sc = &mse_sc[unit]; 259 260 sc->sc_port = idp->id_iobase; 261 sc->mode.accelfactor = (idp->id_flags & MSE_CONFIG_ACCEL) >> 4; 262#ifdef DEVFS 263 sc->devfs_token = 264 devfs_add_devswf(&mse_cdevsw, unit << 1, DV_CHR, 0, 0, 265 0600, "mse%d", unit); 266 sc->n_devfs_token = 267 devfs_add_devswf(&mse_cdevsw, (unit<<1)+1, DV_CHR,0, 0, 268 0600, "nmse%d", unit); 269#endif 270 return (1); 271} 272 273/* 274 * Exclusive open the mouse, initialize it and enable interrupts. 275 */ 276static int 277mseopen(dev, flags, fmt, p) 278 dev_t dev; 279 int flags; 280 int fmt; 281 struct proc *p; 282{ 283 register struct mse_softc *sc; 284 int s; 285 286 if (MSE_UNIT(dev) >= NMSE) 287 return (ENXIO); 288 sc = &mse_sc[MSE_UNIT(dev)]; 289 if (sc->sc_mousetype == MSE_NONE) 290 return (ENXIO); 291 if (sc->sc_flags & MSESC_OPEN) 292 return (EBUSY); 293 sc->sc_flags |= MSESC_OPEN; 294 sc->sc_obuttons = sc->sc_buttons = MOUSE_MSC_BUTTONS; 295 sc->sc_deltax = sc->sc_deltay = 0; 296 sc->sc_bytesread = sc->mode.packetsize = MOUSE_MSC_PACKETSIZE; 297 sc->mode.level = 0; 298 sc->status.flags = 0; 299 sc->status.button = sc->status.obutton = 0; 300 sc->status.dx = sc->status.dy = sc->status.dz = 0; 301 302 /* 303 * Initialize mouse interface and enable interrupts. 304 */ 305 s = spltty(); 306 (*sc->sc_enablemouse)(sc->sc_port); 307 splx(s); 308 return (0); 309} 310 311/* 312 * mseclose: just turn off mouse innterrupts. 313 */ 314static int 315mseclose(dev, flags, fmt, p) 316 dev_t dev; 317 int flags; 318 int fmt; 319 struct proc *p; 320{ 321 struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)]; 322 int s; 323 324 s = spltty(); 325 (*sc->sc_disablemouse)(sc->sc_port); 326 sc->sc_flags &= ~MSESC_OPEN; 327 splx(s); 328 return(0); 329} 330 331/* 332 * mseread: return mouse info using the MSC serial protocol, but without 333 * using bytes 4 and 5. 334 * (Yes this is cheesy, but it makes the X386 server happy, so...) 335 */ 336static int 337mseread(dev, uio, ioflag) 338 dev_t dev; 339 struct uio *uio; 340 int ioflag; 341{ 342 register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)]; 343 int xfer, s, error; 344 345 /* 346 * If there are no protocol bytes to be read, set up a new protocol 347 * packet. 348 */ 349 s = spltty(); /* XXX Should be its own spl, but where is imlXX() */ 350 if (sc->sc_bytesread >= sc->mode.packetsize) { 351 while (sc->sc_deltax == 0 && sc->sc_deltay == 0 && 352 (sc->sc_obuttons ^ sc->sc_buttons) == 0) { 353 if (MSE_NBLOCKIO(dev)) { 354 splx(s); 355 return (0); 356 } 357 sc->sc_flags |= MSESC_WANT; 358 if (error = tsleep((caddr_t)sc, MSEPRI | PCATCH, 359 "mseread", 0)) { 360 splx(s); 361 return (error); 362 } 363 } 364 365 /* 366 * Generate protocol bytes. 367 * For some reason X386 expects 5 bytes but never uses 368 * the fourth or fifth? 369 */ 370 sc->sc_bytes[0] = sc->mode.syncmask[1] 371 | (sc->sc_buttons & ~sc->mode.syncmask[0]); 372 if (sc->sc_deltax > 127) 373 sc->sc_deltax = 127; 374 if (sc->sc_deltax < -127) 375 sc->sc_deltax = -127; 376 sc->sc_deltay = -sc->sc_deltay; /* Otherwise mousey goes wrong way */ 377 if (sc->sc_deltay > 127) 378 sc->sc_deltay = 127; 379 if (sc->sc_deltay < -127) 380 sc->sc_deltay = -127; 381 sc->sc_bytes[1] = sc->sc_deltax; 382 sc->sc_bytes[2] = sc->sc_deltay; 383 sc->sc_bytes[3] = sc->sc_bytes[4] = 0; 384 sc->sc_bytes[5] = sc->sc_bytes[6] = 0; 385 sc->sc_bytes[7] = MOUSE_SYS_EXTBUTTONS; 386 sc->sc_obuttons = sc->sc_buttons; 387 sc->sc_deltax = sc->sc_deltay = 0; 388 sc->sc_bytesread = 0; 389 } 390 splx(s); 391 xfer = min(uio->uio_resid, sc->mode.packetsize - sc->sc_bytesread); 392 if (error = uiomove(&sc->sc_bytes[sc->sc_bytesread], xfer, uio)) 393 return (error); 394 sc->sc_bytesread += xfer; 395 return(0); 396} 397 398/* 399 * mseioctl: process ioctl commands. 400 */ 401static int 402mseioctl(dev, cmd, addr, flag, p) 403 dev_t dev; 404 int cmd; 405 caddr_t addr; 406 int flag; 407 struct proc *p; 408{ 409 register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)]; 410 mousestatus_t status; 411 int err = 0; 412 int s; 413 414 switch (cmd) { 415 416 case MOUSE_GETHWINFO: 417 s = spltty(); 418 *(mousehw_t *)addr = sc->hw; 419 if (sc->mode.level == 0) 420 ((mousehw_t *)addr)->model = MOUSE_MODEL_GENERIC; 421 splx(s); 422 break; 423 424 case MOUSE_GETMODE: 425 s = spltty(); 426 *(mousemode_t *)addr = sc->mode; 427 switch (sc->mode.level) { 428 case 0: 429 break; 430 case 1: 431 ((mousemode_t *)addr)->protocol = MOUSE_PROTO_SYSMOUSE; 432 ((mousemode_t *)addr)->syncmask[0] = MOUSE_SYS_SYNCMASK; 433 ((mousemode_t *)addr)->syncmask[1] = MOUSE_SYS_SYNC; 434 break; 435 } 436 splx(s); 437 break; 438 439 case MOUSE_SETMODE: 440 switch (((mousemode_t *)addr)->level) { 441 case 0: 442 case 1: 443 break; 444 default: 445 return (EINVAL); 446 } 447 if (((mousemode_t *)addr)->accelfactor < -1) 448 return (EINVAL); 449 else if (((mousemode_t *)addr)->accelfactor >= 0) 450 sc->mode.accelfactor = 451 ((mousemode_t *)addr)->accelfactor; 452 sc->mode.level = ((mousemode_t *)addr)->level; 453 switch (sc->mode.level) { 454 case 0: 455 sc->sc_bytesread = sc->mode.packetsize 456 = MOUSE_MSC_PACKETSIZE; 457 break; 458 case 1: 459 sc->sc_bytesread = sc->mode.packetsize 460 = MOUSE_SYS_PACKETSIZE; 461 break; 462 } 463 break; 464 465 case MOUSE_GETLEVEL: 466 *(int *)addr = sc->mode.level; 467 break; 468 469 case MOUSE_SETLEVEL: 470 switch (*(int *)addr) { 471 case 0: 472 sc->mode.level = *(int *)addr; 473 sc->sc_bytesread = sc->mode.packetsize 474 = MOUSE_MSC_PACKETSIZE; 475 break; 476 case 1: 477 sc->mode.level = *(int *)addr; 478 sc->sc_bytesread = sc->mode.packetsize 479 = MOUSE_SYS_PACKETSIZE; 480 break; 481 default: 482 return (EINVAL); 483 } 484 break; 485 486 case MOUSE_GETSTATUS: 487 s = spltty(); 488 status = sc->status; 489 sc->status.flags = 0; 490 sc->status.obutton = sc->status.button; 491 sc->status.button = 0; 492 sc->status.dx = 0; 493 sc->status.dy = 0; 494 sc->status.dz = 0; 495 splx(s); 496 *(mousestatus_t *)addr = status; 497 break; 498 499 case MOUSE_READSTATE: 500 case MOUSE_READDATA: 501 return (ENODEV); 502 503#if (defined(MOUSE_GETVARS)) 504 case MOUSE_GETVARS: 505 case MOUSE_SETVARS: 506 return (ENODEV); 507#endif 508 509 default: 510 return (ENOTTY); 511 } 512 return (err); 513} 514 515/* 516 * msepoll: check for mouse input to be processed. 517 */ 518static int 519msepoll(dev, events, p) 520 dev_t dev; 521 int events; 522 struct proc *p; 523{ 524 register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)]; 525 int s; 526 int revents = 0; 527 528 s = spltty(); 529 if (events & (POLLIN | POLLRDNORM)) 530 if (sc->sc_bytesread != sc->mode.packetsize || 531 sc->sc_deltax != 0 || sc->sc_deltay != 0 || 532 (sc->sc_obuttons ^ sc->sc_buttons) != 0) 533 revents |= events & (POLLIN | POLLRDNORM); 534 else { 535 /* 536 * Since this is an exclusive open device, any previous 537 * proc pointer is trash now, so we can just assign it. 538 */ 539 selrecord(p, &sc->sc_selp); 540 } 541 542 splx(s); 543 return (revents); 544} 545 546/* 547 * mseintr: update mouse status. sc_deltax and sc_deltay are accumulative. 548 */ 549void 550mseintr(unit) 551 int unit; 552{ 553 /* 554 * the table to turn MouseSystem button bits (MOUSE_MSC_BUTTON?UP) 555 * into `mousestatus' button bits (MOUSE_BUTTON?DOWN). 556 */ 557 static int butmap[8] = { 558 0, 559 MOUSE_BUTTON3DOWN, 560 MOUSE_BUTTON2DOWN, 561 MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN, 562 MOUSE_BUTTON1DOWN, 563 MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN, 564 MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN, 565 MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN 566 }; 567 register struct mse_softc *sc = &mse_sc[unit]; 568 int dx, dy, but; 569 int sign; 570 571#ifdef DEBUG 572 static int mse_intrcnt = 0; 573 if((mse_intrcnt++ % 10000) == 0) 574 printf("mseintr\n"); 575#endif /* DEBUG */ 576 if ((sc->sc_flags & MSESC_OPEN) == 0) 577 return; 578 579 (*sc->sc_getmouse)(sc->sc_port, &dx, &dy, &but); 580 if (sc->mode.accelfactor > 0) { 581 sign = (dx < 0); 582 dx = dx * dx / sc->mode.accelfactor; 583 if (dx == 0) 584 dx = 1; 585 if (sign) 586 dx = -dx; 587 sign = (dy < 0); 588 dy = dy * dy / sc->mode.accelfactor; 589 if (dy == 0) 590 dy = 1; 591 if (sign) 592 dy = -dy; 593 } 594 sc->sc_deltax += dx; 595 sc->sc_deltay += dy; 596 sc->sc_buttons = but; 597 598 but = butmap[~but & MOUSE_MSC_BUTTONS]; 599 sc->status.dx += dx; 600 sc->status.dy += dy; 601 sc->status.flags |= ((dx || dy) ? MOUSE_POSCHANGED : 0) 602 | (sc->status.button ^ but); 603 sc->status.button = but; 604 605 /* 606 * If mouse state has changed, wake up anyone wanting to know. 607 */ 608 if (sc->sc_deltax != 0 || sc->sc_deltay != 0 || 609 (sc->sc_obuttons ^ sc->sc_buttons) != 0) { 610 if (sc->sc_flags & MSESC_WANT) { 611 sc->sc_flags &= ~MSESC_WANT; 612 wakeup((caddr_t)sc); 613 } 614 selwakeup(&sc->sc_selp); 615 } 616} 617 618/* 619 * Routines for the Logitech mouse. 620 */ 621/* 622 * Test for a Logitech bus mouse and return 1 if it is. 623 * (until I know how to use the signature port properly, just disable 624 * interrupts and return 1) 625 */ 626static int 627mse_probelogi(idp) 628 register struct isa_device *idp; 629{ 630 631 int sig; 632 633 outb(idp->id_iobase + MSE_PORTD, MSE_SETUP); 634 /* set the signature port */ 635 outb(idp->id_iobase + MSE_PORTB, MSE_LOGI_SIG); 636 637 DELAY(30000); /* 30 ms delay */ 638 sig = inb(idp->id_iobase + MSE_PORTB) & 0xFF; 639 if (sig == MSE_LOGI_SIG) { 640 outb(idp->id_iobase + MSE_PORTC, MSE_DISINTR); 641 return(1); 642 } else { 643 if (bootverbose) 644 printf("mse%d: wrong signature %x\n",idp->id_unit,sig); 645 return(0); 646 } 647} 648 649/* 650 * Initialize Logitech mouse and enable interrupts. 651 */ 652static void 653mse_enablelogi(port) 654 register u_int port; 655{ 656 int dx, dy, but; 657 658 outb(port + MSE_PORTD, MSE_SETUP); 659 mse_getlogi(port, &dx, &dy, &but); 660} 661 662/* 663 * Disable interrupts for Logitech mouse. 664 */ 665static void 666mse_disablelogi(port) 667 register u_int port; 668{ 669 670 outb(port + MSE_PORTC, MSE_DISINTR); 671} 672 673/* 674 * Get the current dx, dy and button up/down state. 675 */ 676static void 677mse_getlogi(port, dx, dy, but) 678 register u_int port; 679 int *dx; 680 int *dy; 681 int *but; 682{ 683 register char x, y; 684 685 outb(port + MSE_PORTC, MSE_HOLD | MSE_RXLOW); 686 x = inb(port + MSE_PORTA); 687 *but = (x >> 5) & MOUSE_MSC_BUTTONS; 688 x &= 0xf; 689 outb(port + MSE_PORTC, MSE_HOLD | MSE_RXHIGH); 690 x |= (inb(port + MSE_PORTA) << 4); 691 outb(port + MSE_PORTC, MSE_HOLD | MSE_RYLOW); 692 y = (inb(port + MSE_PORTA) & 0xf); 693 outb(port + MSE_PORTC, MSE_HOLD | MSE_RYHIGH); 694 y |= (inb(port + MSE_PORTA) << 4); 695 *dx = x; 696 *dy = y; 697 outb(port + MSE_PORTC, MSE_INTREN); 698} 699 700/* 701 * Routines for the ATI Inport bus mouse. 702 */ 703/* 704 * Test for a ATI Inport bus mouse and return 1 if it is. 705 * (do not enable interrupts) 706 */ 707static int 708mse_probeati(idp) 709 register struct isa_device *idp; 710{ 711 int i; 712 713 for (i = 0; i < 2; i++) 714 if (inb(idp->id_iobase + MSE_PORTC) == 0xde) 715 return (1); 716 return (0); 717} 718 719/* 720 * Initialize ATI Inport mouse and enable interrupts. 721 */ 722static void 723mse_enableati(port) 724 register u_int port; 725{ 726 727 outb(port + MSE_PORTA, MSE_INPORT_RESET); 728 outb(port + MSE_PORTA, MSE_INPORT_MODE); 729 outb(port + MSE_PORTB, MSE_INPORT_INTREN); 730} 731 732/* 733 * Disable interrupts for ATI Inport mouse. 734 */ 735static void 736mse_disableati(port) 737 register u_int port; 738{ 739 740 outb(port + MSE_PORTA, MSE_INPORT_MODE); 741 outb(port + MSE_PORTB, 0); 742} 743 744/* 745 * Get current dx, dy and up/down button state. 746 */ 747static void 748mse_getati(port, dx, dy, but) 749 register u_int port; 750 int *dx; 751 int *dy; 752 int *but; 753{ 754 register char byte; 755 756 outb(port + MSE_PORTA, MSE_INPORT_MODE); 757 outb(port + MSE_PORTB, MSE_INPORT_HOLD); 758 outb(port + MSE_PORTA, MSE_INPORT_STATUS); 759 *but = ~inb(port + MSE_PORTB) & MOUSE_MSC_BUTTONS; 760 outb(port + MSE_PORTA, MSE_INPORT_DX); 761 byte = inb(port + MSE_PORTB); 762 *dx = byte; 763 outb(port + MSE_PORTA, MSE_INPORT_DY); 764 byte = inb(port + MSE_PORTB); 765 *dy = byte; 766 outb(port + MSE_PORTA, MSE_INPORT_MODE); 767 outb(port + MSE_PORTB, MSE_INPORT_INTREN); 768} 769 770static mse_devsw_installed = 0; 771 772static void mse_drvinit(void *unused) 773{ 774 dev_t dev; 775 776 if( ! mse_devsw_installed ) { 777 dev = makedev(CDEV_MAJOR, 0); 778 cdevsw_add(&dev,&mse_cdevsw, NULL); 779 mse_devsw_installed = 1; 780 } 781} 782 783SYSINIT(msedev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,mse_drvinit,NULL) 784 785 786#endif /* NMSE */ 787