Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/i386/isa/mse.c
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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 * $FreeBSD$ 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 71 static int mseprobe(struct isa_device *); 72 static int mseattach(struct isa_device *); 73 74 struct isa_driver msedriver = { 75 mseprobe, mseattach, "mse" 76 }; 77 78 static d_open_t mseopen; 79 static d_close_t mseclose; 80 static d_read_t mseread; 81 static d_ioctl_t mseioctl; 82 static d_poll_t msepoll; 83 84 #define CDEV_MAJOR 27 85 static 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 static ointhand2_t mseintr; 91 92 /* 93 * Software control structure for mouse. The sc_enablemouse(), 94 * sc_disablemouse() and sc_getmouse() routines must be called spl'd(). 95 */ 96 static struct mse_softc { 97 int sc_flags; 98 int sc_mousetype; 99 struct selinfo sc_selp; 100 u_int sc_port; 101 void (*sc_enablemouse) __P((u_int port)); 102 void (*sc_disablemouse) __P((u_int port)); 103 void (*sc_getmouse) __P((u_int port, int *dx, int *dy, int *but)); 104 int sc_deltax; 105 int sc_deltay; 106 int sc_obuttons; 107 int sc_buttons; 108 int sc_bytesread; 109 u_char sc_bytes[MOUSE_SYS_PACKETSIZE]; 110 mousehw_t hw; 111 mousemode_t mode; 112 mousestatus_t status; 113 #ifdef DEVFS 114 void *devfs_token; 115 void *n_devfs_token; 116 #endif 117 } mse_sc[NMSE]; 118 119 /* Flags */ 120 #define MSESC_OPEN 0x1 121 #define MSESC_WANT 0x2 122 123 /* and Mouse Types */ 124 #define MSE_NONE 0 /* don't move this! */ 125 #define MSE_LOGITECH 0x1 126 #define MSE_ATIINPORT 0x2 127 #define MSE_LOGI_SIG 0xA5 128 129 #define MSE_PORTA 0 130 #define MSE_PORTB 1 131 #define MSE_PORTC 2 132 #define MSE_PORTD 3 133 134 #define MSE_UNIT(dev) (minor(dev) >> 1) 135 #define MSE_NBLOCKIO(dev) (minor(dev) & 0x1) 136 137 /* 138 * Logitech bus mouse definitions 139 */ 140 #define MSE_SETUP 0x91 /* What does this mean? */ 141 /* The definition for the control port */ 142 /* is as follows: */ 143 144 /* D7 = Mode set flag (1 = active) */ 145 /* D6,D5 = Mode selection (port A) */ 146 /* 00 = Mode 0 = Basic I/O */ 147 /* 01 = Mode 1 = Strobed I/O */ 148 /* 10 = Mode 2 = Bi-dir bus */ 149 /* D4 = Port A direction (1 = input)*/ 150 /* D3 = Port C (upper 4 bits) */ 151 /* direction. (1 = input) */ 152 /* D2 = Mode selection (port B & C) */ 153 /* 0 = Mode 0 = Basic I/O */ 154 /* 1 = Mode 1 = Strobed I/O */ 155 /* D1 = Port B direction (1 = input)*/ 156 /* D0 = Port C (lower 4 bits) */ 157 /* direction. (1 = input) */ 158 159 /* So 91 means Basic I/O on all 3 ports,*/ 160 /* Port A is an input port, B is an */ 161 /* output port, C is split with upper */ 162 /* 4 bits being an output port and lower*/ 163 /* 4 bits an input port, and enable the */ 164 /* sucker. */ 165 /* Courtesy Intel 8255 databook. Lars */ 166 #define MSE_HOLD 0x80 167 #define MSE_RXLOW 0x00 168 #define MSE_RXHIGH 0x20 169 #define MSE_RYLOW 0x40 170 #define MSE_RYHIGH 0x60 171 #define MSE_DISINTR 0x10 172 #define MSE_INTREN 0x00 173 174 static int mse_probelogi __P((struct isa_device *idp)); 175 static void mse_disablelogi __P((u_int port)); 176 static void mse_getlogi __P((u_int port, int *dx, int *dy, int *but)); 177 static void mse_enablelogi __P((u_int port)); 178 179 /* 180 * ATI Inport mouse definitions 181 */ 182 #define MSE_INPORT_RESET 0x80 183 #define MSE_INPORT_STATUS 0x00 184 #define MSE_INPORT_DX 0x01 185 #define MSE_INPORT_DY 0x02 186 #define MSE_INPORT_MODE 0x07 187 #define MSE_INPORT_HOLD 0x20 188 #define MSE_INPORT_INTREN 0x09 189 190 static int mse_probeati __P((struct isa_device *idp)); 191 static void mse_enableati __P((u_int port)); 192 static void mse_disableati __P((u_int port)); 193 static void mse_getati __P((u_int port, int *dx, int *dy, int *but)); 194 195 #define MSEPRI (PZERO + 3) 196 197 /* 198 * Table of mouse types. 199 * Keep the Logitech last, since I haven't figured out how to probe it 200 * properly yet. (Someday I'll have the documentation.) 201 */ 202 static struct mse_types { 203 int m_type; /* Type of bus mouse */ 204 int (*m_probe) __P((struct isa_device *idp)); 205 /* Probe routine to test for it */ 206 void (*m_enable) __P((u_int port)); 207 /* Start routine */ 208 void (*m_disable) __P((u_int port)); 209 /* Disable interrupts routine */ 210 void (*m_get) __P((u_int port, int *dx, int *dy, int *but)); 211 /* and get mouse status */ 212 mousehw_t m_hw; /* buttons iftype type model hwid */ 213 mousemode_t m_mode; /* proto rate res accel level size mask */ 214 } mse_types[] = { 215 { MSE_ATIINPORT, 216 mse_probeati, mse_enableati, mse_disableati, mse_getati, 217 { 2, MOUSE_IF_INPORT, MOUSE_MOUSE, MOUSE_MODEL_GENERIC, 0, }, 218 { MOUSE_PROTO_INPORT, -1, -1, 0, 0, MOUSE_MSC_PACKETSIZE, 219 { MOUSE_MSC_SYNCMASK, MOUSE_MSC_SYNC, }, }, }, 220 { MSE_LOGITECH, 221 mse_probelogi, mse_enablelogi, mse_disablelogi, mse_getlogi, 222 { 2, MOUSE_IF_BUS, MOUSE_MOUSE, MOUSE_MODEL_GENERIC, 0, }, 223 { MOUSE_PROTO_BUS, -1, -1, 0, 0, MOUSE_MSC_PACKETSIZE, 224 { MOUSE_MSC_SYNCMASK, MOUSE_MSC_SYNC, }, }, }, 225 { 0, }, 226 }; 227 228 int 229 mseprobe(idp) 230 register struct isa_device *idp; 231 { 232 register struct mse_softc *sc = &mse_sc[idp->id_unit]; 233 register int i; 234 235 /* 236 * Check for each mouse type in the table. 237 */ 238 i = 0; 239 while (mse_types[i].m_type) { 240 if ((*mse_types[i].m_probe)(idp)) { 241 sc->sc_mousetype = mse_types[i].m_type; 242 sc->sc_enablemouse = mse_types[i].m_enable; 243 sc->sc_disablemouse = mse_types[i].m_disable; 244 sc->sc_getmouse = mse_types[i].m_get; 245 sc->hw = mse_types[i].m_hw; 246 sc->mode = mse_types[i].m_mode; 247 return (1); 248 } 249 i++; 250 } 251 return (0); 252 } 253 254 int 255 mseattach(idp) 256 struct isa_device *idp; 257 { 258 int unit = idp->id_unit; 259 struct mse_softc *sc = &mse_sc[unit]; 260 261 idp->id_ointr = mseintr; 262 sc->sc_port = idp->id_iobase; 263 sc->mode.accelfactor = (idp->id_flags & MSE_CONFIG_ACCEL) >> 4; 264 #ifdef DEVFS 265 sc->devfs_token = 266 devfs_add_devswf(&mse_cdevsw, unit << 1, DV_CHR, 0, 0, 267 0600, "mse%d", unit); 268 sc->n_devfs_token = 269 devfs_add_devswf(&mse_cdevsw, (unit<<1)+1, DV_CHR,0, 0, 270 0600, "nmse%d", unit); 271 #endif 272 return (1); 273 } 274 275 /* 276 * Exclusive open the mouse, initialize it and enable interrupts. 277 */ 278 static int 279 mseopen(dev, flags, fmt, p) 280 dev_t dev; 281 int flags; 282 int fmt; 283 struct proc *p; 284 { 285 register struct mse_softc *sc; 286 int s; 287 288 if (MSE_UNIT(dev) >= NMSE) 289 return (ENXIO); 290 sc = &mse_sc[MSE_UNIT(dev)]; 291 if (sc->sc_mousetype == MSE_NONE) 292 return (ENXIO); 293 if (sc->sc_flags & MSESC_OPEN) 294 return (EBUSY); 295 sc->sc_flags |= MSESC_OPEN; 296 sc->sc_obuttons = sc->sc_buttons = MOUSE_MSC_BUTTONS; 297 sc->sc_deltax = sc->sc_deltay = 0; 298 sc->sc_bytesread = sc->mode.packetsize = MOUSE_MSC_PACKETSIZE; 299 sc->mode.level = 0; 300 sc->status.flags = 0; 301 sc->status.button = sc->status.obutton = 0; 302 sc->status.dx = sc->status.dy = sc->status.dz = 0; 303 304 /* 305 * Initialize mouse interface and enable interrupts. 306 */ 307 s = spltty(); 308 (*sc->sc_enablemouse)(sc->sc_port); 309 splx(s); 310 return (0); 311 } 312 313 /* 314 * mseclose: just turn off mouse innterrupts. 315 */ 316 static int 317 mseclose(dev, flags, fmt, p) 318 dev_t dev; 319 int flags; 320 int fmt; 321 struct proc *p; 322 { 323 struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)]; 324 int s; 325 326 s = spltty(); 327 (*sc->sc_disablemouse)(sc->sc_port); 328 sc->sc_flags &= ~MSESC_OPEN; 329 splx(s); 330 return(0); 331 } 332 333 /* 334 * mseread: return mouse info using the MSC serial protocol, but without 335 * using bytes 4 and 5. 336 * (Yes this is cheesy, but it makes the X386 server happy, so...) 337 */ 338 static int 339 mseread(dev, uio, ioflag) 340 dev_t dev; 341 struct uio *uio; 342 int ioflag; 343 { 344 register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)]; 345 int xfer, s, error; 346 347 /* 348 * If there are no protocol bytes to be read, set up a new protocol 349 * packet. 350 */ 351 s = spltty(); /* XXX Should be its own spl, but where is imlXX() */ 352 if (sc->sc_bytesread >= sc->mode.packetsize) { 353 while (sc->sc_deltax == 0 && sc->sc_deltay == 0 && 354 (sc->sc_obuttons ^ sc->sc_buttons) == 0) { 355 if (MSE_NBLOCKIO(dev)) { 356 splx(s); 357 return (0); 358 } 359 sc->sc_flags |= MSESC_WANT; 360 if (error = tsleep((caddr_t)sc, MSEPRI | PCATCH, 361 "mseread", 0)) { 362 splx(s); 363 return (error); 364 } 365 } 366 367 /* 368 * Generate protocol bytes. 369 * For some reason X386 expects 5 bytes but never uses 370 * the fourth or fifth? 371 */ 372 sc->sc_bytes[0] = sc->mode.syncmask[1] 373 | (sc->sc_buttons & ~sc->mode.syncmask[0]); 374 if (sc->sc_deltax > 127) 375 sc->sc_deltax = 127; 376 if (sc->sc_deltax < -127) 377 sc->sc_deltax = -127; 378 sc->sc_deltay = -sc->sc_deltay; /* Otherwise mousey goes wrong way */ 379 if (sc->sc_deltay > 127) 380 sc->sc_deltay = 127; 381 if (sc->sc_deltay < -127) 382 sc->sc_deltay = -127; 383 sc->sc_bytes[1] = sc->sc_deltax; 384 sc->sc_bytes[2] = sc->sc_deltay; 385 sc->sc_bytes[3] = sc->sc_bytes[4] = 0; 386 sc->sc_bytes[5] = sc->sc_bytes[6] = 0; 387 sc->sc_bytes[7] = MOUSE_SYS_EXTBUTTONS; 388 sc->sc_obuttons = sc->sc_buttons; 389 sc->sc_deltax = sc->sc_deltay = 0; 390 sc->sc_bytesread = 0; 391 } 392 splx(s); 393 xfer = min(uio->uio_resid, sc->mode.packetsize - sc->sc_bytesread); 394 if (error = uiomove(&sc->sc_bytes[sc->sc_bytesread], xfer, uio)) 395 return (error); 396 sc->sc_bytesread += xfer; 397 return(0); 398 } 399 400 /* 401 * mseioctl: process ioctl commands. 402 */ 403 static int 404 mseioctl(dev, cmd, addr, flag, p) 405 dev_t dev; 406 u_long cmd; 407 caddr_t addr; 408 int flag; 409 struct proc *p; 410 { 411 register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)]; 412 mousestatus_t status; 413 int err = 0; 414 int s; 415 416 switch (cmd) { 417 418 case MOUSE_GETHWINFO: 419 s = spltty(); 420 *(mousehw_t *)addr = sc->hw; 421 if (sc->mode.level == 0) 422 ((mousehw_t *)addr)->model = MOUSE_MODEL_GENERIC; 423 splx(s); 424 break; 425 426 case MOUSE_GETMODE: 427 s = spltty(); 428 *(mousemode_t *)addr = sc->mode; 429 switch (sc->mode.level) { 430 case 0: 431 break; 432 case 1: 433 ((mousemode_t *)addr)->protocol = MOUSE_PROTO_SYSMOUSE; 434 ((mousemode_t *)addr)->syncmask[0] = MOUSE_SYS_SYNCMASK; 435 ((mousemode_t *)addr)->syncmask[1] = MOUSE_SYS_SYNC; 436 break; 437 } 438 splx(s); 439 break; 440 441 case MOUSE_SETMODE: 442 switch (((mousemode_t *)addr)->level) { 443 case 0: 444 case 1: 445 break; 446 default: 447 return (EINVAL); 448 } 449 if (((mousemode_t *)addr)->accelfactor < -1) 450 return (EINVAL); 451 else if (((mousemode_t *)addr)->accelfactor >= 0) 452 sc->mode.accelfactor = 453 ((mousemode_t *)addr)->accelfactor; 454 sc->mode.level = ((mousemode_t *)addr)->level; 455 switch (sc->mode.level) { 456 case 0: 457 sc->sc_bytesread = sc->mode.packetsize 458 = MOUSE_MSC_PACKETSIZE; 459 break; 460 case 1: 461 sc->sc_bytesread = sc->mode.packetsize 462 = MOUSE_SYS_PACKETSIZE; 463 break; 464 } 465 break; 466 467 case MOUSE_GETLEVEL: 468 *(int *)addr = sc->mode.level; 469 break; 470 471 case MOUSE_SETLEVEL: 472 switch (*(int *)addr) { 473 case 0: 474 sc->mode.level = *(int *)addr; 475 sc->sc_bytesread = sc->mode.packetsize 476 = MOUSE_MSC_PACKETSIZE; 477 break; 478 case 1: 479 sc->mode.level = *(int *)addr; 480 sc->sc_bytesread = sc->mode.packetsize 481 = MOUSE_SYS_PACKETSIZE; 482 break; 483 default: 484 return (EINVAL); 485 } 486 break; 487 488 case MOUSE_GETSTATUS: 489 s = spltty(); 490 status = sc->status; 491 sc->status.flags = 0; 492 sc->status.obutton = sc->status.button; 493 sc->status.button = 0; 494 sc->status.dx = 0; 495 sc->status.dy = 0; 496 sc->status.dz = 0; 497 splx(s); 498 *(mousestatus_t *)addr = status; 499 break; 500 501 case MOUSE_READSTATE: 502 case MOUSE_READDATA: 503 return (ENODEV); 504 505 #if (defined(MOUSE_GETVARS)) 506 case MOUSE_GETVARS: 507 case MOUSE_SETVARS: 508 return (ENODEV); 509 #endif 510 511 default: 512 return (ENOTTY); 513 } 514 return (err); 515 } 516 517 /* 518 * msepoll: check for mouse input to be processed. 519 */ 520 static int 521 msepoll(dev, events, p) 522 dev_t dev; 523 int events; 524 struct proc *p; 525 { 526 register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)]; 527 int s; 528 int revents = 0; 529 530 s = spltty(); 531 if (events & (POLLIN | POLLRDNORM)) 532 if (sc->sc_bytesread != sc->mode.packetsize || 533 sc->sc_deltax != 0 || sc->sc_deltay != 0 || 534 (sc->sc_obuttons ^ sc->sc_buttons) != 0) 535 revents |= events & (POLLIN | POLLRDNORM); 536 else { 537 /* 538 * Since this is an exclusive open device, any previous 539 * proc pointer is trash now, so we can just assign it. 540 */ 541 selrecord(p, &sc->sc_selp); 542 } 543 544 splx(s); 545 return (revents); 546 } 547 548 /* 549 * mseintr: update mouse status. sc_deltax and sc_deltay are accumulative. 550 */ 551 static void 552 mseintr(unit) 553 int unit; 554 { 555 /* 556 * the table to turn MouseSystem button bits (MOUSE_MSC_BUTTON?UP) 557 * into `mousestatus' button bits (MOUSE_BUTTON?DOWN). 558 */ 559 static int butmap[8] = { 560 0, 561 MOUSE_BUTTON3DOWN, 562 MOUSE_BUTTON2DOWN, 563 MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN, 564 MOUSE_BUTTON1DOWN, 565 MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN, 566 MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN, 567 MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN 568 }; 569 register struct mse_softc *sc = &mse_sc[unit]; 570 int dx, dy, but; 571 int sign; 572 573 #ifdef DEBUG 574 static int mse_intrcnt = 0; 575 if((mse_intrcnt++ % 10000) == 0) 576 printf("mseintr\n"); 577 #endif /* DEBUG */ 578 if ((sc->sc_flags & MSESC_OPEN) == 0) 579 return; 580 581 (*sc->sc_getmouse)(sc->sc_port, &dx, &dy, &but); 582 if (sc->mode.accelfactor > 0) { 583 sign = (dx < 0); 584 dx = dx * dx / sc->mode.accelfactor; 585 if (dx == 0) 586 dx = 1; 587 if (sign) 588 dx = -dx; 589 sign = (dy < 0); 590 dy = dy * dy / sc->mode.accelfactor; 591 if (dy == 0) 592 dy = 1; 593 if (sign) 594 dy = -dy; 595 } 596 sc->sc_deltax += dx; 597 sc->sc_deltay += dy; 598 sc->sc_buttons = but; 599 600 but = butmap[~but & MOUSE_MSC_BUTTONS]; 601 sc->status.dx += dx; 602 sc->status.dy += dy; 603 sc->status.flags |= ((dx || dy) ? MOUSE_POSCHANGED : 0) 604 | (sc->status.button ^ but); 605 sc->status.button = but; 606 607 /* 608 * If mouse state has changed, wake up anyone wanting to know. 609 */ 610 if (sc->sc_deltax != 0 || sc->sc_deltay != 0 || 611 (sc->sc_obuttons ^ sc->sc_buttons) != 0) { 612 if (sc->sc_flags & MSESC_WANT) { 613 sc->sc_flags &= ~MSESC_WANT; 614 wakeup((caddr_t)sc); 615 } 616 selwakeup(&sc->sc_selp); 617 } 618 } 619 620 /* 621 * Routines for the Logitech mouse. 622 */ 623 /* 624 * Test for a Logitech bus mouse and return 1 if it is. 625 * (until I know how to use the signature port properly, just disable 626 * interrupts and return 1) 627 */ 628 static int 629 mse_probelogi(idp) 630 register struct isa_device *idp; 631 { 632 633 int sig; 634 635 outb(idp->id_iobase + MSE_PORTD, MSE_SETUP); 636 /* set the signature port */ 637 outb(idp->id_iobase + MSE_PORTB, MSE_LOGI_SIG); 638 639 DELAY(30000); /* 30 ms delay */ 640 sig = inb(idp->id_iobase + MSE_PORTB) & 0xFF; 641 if (sig == MSE_LOGI_SIG) { 642 outb(idp->id_iobase + MSE_PORTC, MSE_DISINTR); 643 return(1); 644 } else { 645 if (bootverbose) 646 printf("mse%d: wrong signature %x\n",idp->id_unit,sig); 647 return(0); 648 } 649 } 650 651 /* 652 * Initialize Logitech mouse and enable interrupts. 653 */ 654 static void 655 mse_enablelogi(port) 656 register u_int port; 657 { 658 int dx, dy, but; 659 660 outb(port + MSE_PORTD, MSE_SETUP); 661 mse_getlogi(port, &dx, &dy, &but); 662 } 663 664 /* 665 * Disable interrupts for Logitech mouse. 666 */ 667 static void 668 mse_disablelogi(port) 669 register u_int port; 670 { 671 672 outb(port + MSE_PORTC, MSE_DISINTR); 673 } 674 675 /* 676 * Get the current dx, dy and button up/down state. 677 */ 678 static void 679 mse_getlogi(port, dx, dy, but) 680 register u_int port; 681 int *dx; 682 int *dy; 683 int *but; 684 { 685 register char x, y; 686 687 outb(port + MSE_PORTC, MSE_HOLD | MSE_RXLOW); 688 x = inb(port + MSE_PORTA); 689 *but = (x >> 5) & MOUSE_MSC_BUTTONS; 690 x &= 0xf; 691 outb(port + MSE_PORTC, MSE_HOLD | MSE_RXHIGH); 692 x |= (inb(port + MSE_PORTA) << 4); 693 outb(port + MSE_PORTC, MSE_HOLD | MSE_RYLOW); 694 y = (inb(port + MSE_PORTA) & 0xf); 695 outb(port + MSE_PORTC, MSE_HOLD | MSE_RYHIGH); 696 y |= (inb(port + MSE_PORTA) << 4); 697 *dx = x; 698 *dy = y; 699 outb(port + MSE_PORTC, MSE_INTREN); 700 } 701 702 /* 703 * Routines for the ATI Inport bus mouse. 704 */ 705 /* 706 * Test for a ATI Inport bus mouse and return 1 if it is. 707 * (do not enable interrupts) 708 */ 709 static int 710 mse_probeati(idp) 711 register struct isa_device *idp; 712 { 713 int i; 714 715 for (i = 0; i < 2; i++) 716 if (inb(idp->id_iobase + MSE_PORTC) == 0xde) 717 return (1); 718 return (0); 719 } 720 721 /* 722 * Initialize ATI Inport mouse and enable interrupts. 723 */ 724 static void 725 mse_enableati(port) 726 register u_int port; 727 { 728 729 outb(port + MSE_PORTA, MSE_INPORT_RESET); 730 outb(port + MSE_PORTA, MSE_INPORT_MODE); 731 outb(port + MSE_PORTB, MSE_INPORT_INTREN); 732 } 733 734 /* 735 * Disable interrupts for ATI Inport mouse. 736 */ 737 static void 738 mse_disableati(port) 739 register u_int port; 740 { 741 742 outb(port + MSE_PORTA, MSE_INPORT_MODE); 743 outb(port + MSE_PORTB, 0); 744 } 745 746 /* 747 * Get current dx, dy and up/down button state. 748 */ 749 static void 750 mse_getati(port, dx, dy, but) 751 register u_int port; 752 int *dx; 753 int *dy; 754 int *but; 755 { 756 register char byte; 757 758 outb(port + MSE_PORTA, MSE_INPORT_MODE); 759 outb(port + MSE_PORTB, MSE_INPORT_HOLD); 760 outb(port + MSE_PORTA, MSE_INPORT_STATUS); 761 *but = ~inb(port + MSE_PORTB) & MOUSE_MSC_BUTTONS; 762 outb(port + MSE_PORTA, MSE_INPORT_DX); 763 byte = inb(port + MSE_PORTB); 764 *dx = byte; 765 outb(port + MSE_PORTA, MSE_INPORT_DY); 766 byte = inb(port + MSE_PORTB); 767 *dy = byte; 768 outb(port + MSE_PORTA, MSE_INPORT_MODE); 769 outb(port + MSE_PORTB, MSE_INPORT_INTREN); 770 } 771 772 static mse_devsw_installed = 0; 773 774 static void mse_drvinit(void *unused) 775 { 776 dev_t dev; 777 778 if( ! mse_devsw_installed ) { 779 dev = makedev(CDEV_MAJOR, 0); 780 cdevsw_add(&dev,&mse_cdevsw, NULL); 781 mse_devsw_installed = 1; 782 } 783 } 784 785 SYSINIT(msedev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,mse_drvinit,NULL) 786 787 788 #endif /* NMSE */
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