1 /* $NetBSD: ms.c,v 1.36 2009/03/14 15:36:01 dsl Exp $ */ 2 3 /* 4 * based on: 5 * 6 * Copyright (c) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This software was developed by the Computer Systems Engineering group 10 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 11 * contributed to Berkeley. 12 * 13 * All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Lawrence Berkeley Laboratory. 17 * 18 * Redistribution and use in source and binary forms, with or without 19 * modification, are permitted provided that the following conditions 20 * are met: 21 * 1. Redistributions of source code must retain the above copyright 22 * notice, this list of conditions and the following disclaimer. 23 * 2. Redistributions in binary form must reproduce the above copyright 24 * notice, this list of conditions and the following disclaimer in the 25 * documentation and/or other materials provided with the distribution. 26 * 3. Neither the name of the University nor the names of its contributors 27 * may be used to endorse or promote products derived from this software 28 * without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 40 * SUCH DAMAGE. 41 * 42 * @(#)ms.c 8.1 (Berkeley) 6/11/93 43 * 44 * Header: ms.c,v 1.5 92/11/26 01:28:47 torek Exp (LBL) 45 */ 46 47 #include <sys/cdefs.h> 48 __KERNEL_RCSID(0, "$NetBSD: ms.c,v 1.36 2009/03/14 15:36:01 dsl Exp $"); 49 50 /* 51 * Mouse driver. 52 * 53 * wscons aware. Attaches two wsmouse devices, one for each port. 54 * Also still exports its own device entry points so it is possible 55 * to open this and read firm_events. 56 * The events go only to one place at a time: 57 * - When somebody has opened a ms device directly wsmouse cannot be activated. 58 * (when wsmouse is opened it calls ms_enable to activate) 59 * - When feeding events to wsmouse open of ms device will fail. 60 */ 61 62 #include "wsmouse.h" 63 64 #include <sys/param.h> 65 #include <sys/device.h> 66 #include <sys/ioctl.h> 67 #include <sys/kernel.h> 68 #include <sys/proc.h> 69 #include <sys/syslog.h> 70 #include <sys/systm.h> 71 #include <sys/callout.h> 72 #include <sys/tty.h> 73 #include <sys/signalvar.h> 74 #include <sys/conf.h> 75 76 #include <amiga/dev/event_var.h> 77 #include <amiga/dev/vuid_event.h> 78 79 #include <amiga/amiga/custom.h> 80 #include <amiga/amiga/cia.h> 81 #include <amiga/amiga/device.h> 82 83 #if NWSMOUSE > 0 84 #include <dev/wscons/wsmousevar.h> 85 #include <dev/wscons/wsconsio.h> 86 #endif 87 88 void msattach(struct device *, struct device *, void *); 89 int msmatch(struct device *, struct cfdata *, void *); 90 91 /* per-port state */ 92 struct ms_port { 93 int ms_portno; /* which hardware port, for msintr() */ 94 95 struct callout ms_intr_ch; 96 97 u_char ms_horc; /* horizontal counter on last scan */ 98 u_char ms_verc; /* vertical counter on last scan */ 99 char ms_mb; /* mouse button state */ 100 char ms_ub; /* user button state */ 101 int ms_dx; /* delta-x */ 102 int ms_dy; /* delta-y */ 103 volatile int ms_ready; /* event queue is ready */ 104 struct evvar ms_events; /* event queue state */ 105 #if NWSMOUSE > 0 106 struct device *ms_wsmousedev; /* wsmouse device */ 107 int ms_wsenabled; /* feeding events to wscons */ 108 #endif 109 }; 110 111 #define MS_NPORTS 2 112 113 struct ms_softc { 114 struct device sc_dev; /* base device */ 115 struct ms_port sc_ports[MS_NPORTS]; 116 }; 117 118 CFATTACH_DECL(ms, sizeof(struct ms_softc), 119 msmatch, msattach, NULL, NULL); 120 121 void msintr(void *); 122 void ms_enable(struct ms_port *); 123 void ms_disable(struct ms_port *); 124 125 extern struct cfdriver ms_cd; 126 127 dev_type_open(msopen); 128 dev_type_close(msclose); 129 dev_type_read(msread); 130 dev_type_ioctl(msioctl); 131 dev_type_poll(mspoll); 132 dev_type_kqfilter(mskqfilter); 133 134 const struct cdevsw ms_cdevsw = { 135 msopen, msclose, msread, nowrite, msioctl, 136 nostop, notty, mspoll, nommap, mskqfilter, 137 }; 138 139 #define MS_UNIT(d) ((minor(d) & ~0x1) >> 1) 140 #define MS_PORT(d) (minor(d) & 0x1) 141 142 /* 143 * Given a dev_t, return a pointer to the port's hardware state. 144 * Assumes the unit to be valid, so do *not* use this in msopen(). 145 */ 146 #define MS_DEV2MSPORT(d) \ 147 (&(((struct ms_softc *)getsoftc(ms_cd, MS_UNIT(d)))->sc_ports[MS_PORT(d)])) 148 149 #if NWSMOUSE > 0 150 /* 151 * Callbacks for wscons. 152 */ 153 static int ms_wscons_enable(void *); 154 static int ms_wscons_ioctl(void *, u_long, void *, int, struct lwp *); 155 static void ms_wscons_disable(void *); 156 157 static struct wsmouse_accessops ms_wscons_accessops = { 158 ms_wscons_enable, 159 ms_wscons_ioctl, 160 ms_wscons_disable 161 }; 162 #endif 163 164 int 165 msmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 166 { 167 static int ms_matched = 0; 168 169 /* Allow only one instance. */ 170 if (!matchname((char *)auxp, "ms") || ms_matched) 171 return 0; 172 173 ms_matched = 1; 174 return 1; 175 } 176 177 void 178 msattach(struct device *pdp, struct device *dp, void *auxp) 179 { 180 #if NWSMOUSE > 0 181 struct wsmousedev_attach_args waa; 182 #endif 183 struct ms_softc *sc = (void *) dp; 184 int i; 185 186 printf("\n"); 187 for (i = 0; i < MS_NPORTS; i++) { 188 sc->sc_ports[i].ms_portno = i; 189 callout_init(&sc->sc_ports[i].ms_intr_ch, 0); 190 #if NWSMOUSE > 0 191 waa.accessops = &ms_wscons_accessops; 192 waa.accesscookie = &sc->sc_ports[i]; 193 194 sc->sc_ports[i].ms_wsenabled = 0; 195 sc->sc_ports[i].ms_wsmousedev = 196 config_found(dp, &waa, wsmousedevprint); 197 #endif 198 } 199 } 200 201 /* 202 * Amiga mice are hooked up to one of the two "game" ports, where 203 * the main mouse is usually on the first port, and port 2 can 204 * be used by a joystick. Nevertheless, we support two mouse 205 * devices, /dev/mouse0 and /dev/mouse1 (with a link of /dev/mouse to 206 * the device that represents the port of the mouse in use). 207 */ 208 209 /* 210 * enable scanner, called when someone opens the port. 211 */ 212 void 213 ms_enable(struct ms_port *ms) 214 { 215 216 /* 217 * use this as flag to the "interrupt" to tell it when to 218 * shut off (when it's reset to 0). 219 */ 220 ms->ms_ready = 1; 221 222 callout_reset(&ms->ms_intr_ch, 2, msintr, ms); 223 } 224 225 /* 226 * disable scanner. Just set ms_ready to 0, and after the next 227 * timeout taken, no further timeouts will be initiated. 228 */ 229 void 230 ms_disable(struct ms_port *ms) 231 { 232 int s; 233 234 s = splhigh (); 235 ms->ms_ready = 0; 236 /* 237 * sync with the interrupt 238 */ 239 tsleep(ms, PZERO - 1, "mouse-disable", 0); 240 splx(s); 241 } 242 243 244 /* 245 * we're emulating a mousesystems serial mouse here.. 246 */ 247 void 248 msintr(void *arg) 249 { 250 static const char to_one[] = { 1, 2, 2, 4, 4, 4, 4 }; 251 static const int to_id[] = { MS_RIGHT, MS_MIDDLE, 0, MS_LEFT }; 252 struct ms_port *ms = arg; 253 struct firm_event *fe; 254 int mb, ub, d, get, put, any, port; 255 u_char pra, *horc, *verc; 256 u_short pot, count; 257 short dx, dy; 258 259 port = ms->ms_portno; 260 261 horc = ((u_char *) &count) + 1; 262 verc = (u_char *) &count; 263 264 /* 265 * first read the three buttons. 266 */ 267 pot = custom.potgor; 268 pra = ciaa.pra; 269 pot >>= port == 0 ? 8 : 12; /* contains right and middle button */ 270 pra >>= port == 0 ? 6 : 7; /* contains left button */ 271 mb = (pot & 4) / 4 + (pot & 1) * 2 + (pra & 1) * 4; 272 mb ^= 0x07; 273 274 /* 275 * read current values of counter registers 276 */ 277 if (port == 0) 278 count = custom.joy0dat; 279 else 280 count = custom.joy1dat; 281 282 /* 283 * take care of wraparound 284 */ 285 dx = *horc - ms->ms_horc; 286 if (dx < -127) 287 dx += 255; 288 else if (dx > 127) 289 dx -= 255; 290 dy = *verc - ms->ms_verc; 291 if (dy < -127) 292 dy += 255; 293 else if (dy > 127) 294 dy -= 255; 295 296 /* 297 * remember current values for next scan 298 */ 299 ms->ms_horc = *horc; 300 ms->ms_verc = *verc; 301 302 ms->ms_dx = dx; 303 ms->ms_dy = dy; 304 ms->ms_mb = mb; 305 306 #if NWSMOUSE > 0 307 /* 308 * If we have attached wsmouse and we are not opened 309 * directly then pass events to wscons. 310 */ 311 if (ms->ms_wsmousedev && ms->ms_wsenabled) 312 { 313 int buttons = 0; 314 315 if (mb & 4) 316 buttons |= 1; 317 if (mb & 2) 318 buttons |= 2; 319 if (mb & 1) 320 buttons |= 4; 321 322 wsmouse_input(ms->ms_wsmousedev, 323 buttons, 324 dx, -dy, 0, 0, 325 WSMOUSE_INPUT_DELTA); 326 327 } else 328 #endif 329 if (dx || dy || ms->ms_ub != ms->ms_mb) { 330 /* 331 * We have at least one event (mouse button, delta-X, or 332 * delta-Y; possibly all three, and possibly three separate 333 * button events). Deliver these events until we are out of 334 * changes or out of room. As events get delivered, mark them 335 * `unchanged'. 336 */ 337 any = 0; 338 get = ms->ms_events.ev_get; 339 put = ms->ms_events.ev_put; 340 fe = &ms->ms_events.ev_q[put]; 341 342 mb = ms->ms_mb; 343 ub = ms->ms_ub; 344 while ((d = mb ^ ub) != 0) { 345 /* 346 * Mouse button change. Convert up to three changes 347 * to the `first' change, and drop it into the event 348 * queue. 349 */ 350 if ((++put) % EV_QSIZE == get) { 351 put--; 352 goto out; 353 } 354 355 d = to_one[d - 1]; /* from 1..7 to {1,2,4} */ 356 fe->id = to_id[d - 1]; /* from {1,2,4} to ID */ 357 fe->value = mb & d ? VKEY_DOWN : VKEY_UP; 358 firm_gettime(fe); 359 fe++; 360 361 if (put >= EV_QSIZE) { 362 put = 0; 363 fe = &ms->ms_events.ev_q[0]; 364 } 365 any = 1; 366 367 ub ^= d; 368 } 369 if (ms->ms_dx) { 370 if ((++put) % EV_QSIZE == get) { 371 put--; 372 goto out; 373 } 374 375 fe->id = LOC_X_DELTA; 376 fe->value = ms->ms_dx; 377 firm_gettime(fe); 378 fe++; 379 380 if (put >= EV_QSIZE) { 381 put = 0; 382 fe = &ms->ms_events.ev_q[0]; 383 } 384 any = 1; 385 386 ms->ms_dx = 0; 387 } 388 if (ms->ms_dy) { 389 if ((++put) % EV_QSIZE == get) { 390 put--; 391 goto out; 392 } 393 394 fe->id = LOC_Y_DELTA; 395 fe->value = ms->ms_dy; 396 firm_gettime(fe); 397 fe++; 398 399 if (put >= EV_QSIZE) { 400 put = 0; 401 fe = &ms->ms_events.ev_q[0]; 402 } 403 any = 1; 404 405 ms->ms_dy = 0; 406 } 407 out: 408 if (any) { 409 ms->ms_ub = ub; 410 ms->ms_events.ev_put = put; 411 EV_WAKEUP(&ms->ms_events); 412 } 413 } 414 415 /* 416 * reschedule handler, or if terminating, 417 * handshake with ms_disable 418 */ 419 if (ms->ms_ready) 420 callout_reset(&ms->ms_intr_ch, 2, msintr, ms); 421 else 422 wakeup(ms); 423 } 424 425 int 426 msopen(dev_t dev, int flags, int mode, struct lwp *l) 427 { 428 struct ms_softc *sc; 429 struct ms_port *ms; 430 int unit, port; 431 432 unit = MS_UNIT(dev); 433 sc = (struct ms_softc *)getsoftc(ms_cd, unit); 434 435 if (sc == NULL) 436 return(EXDEV); 437 438 port = MS_PORT(dev); 439 ms = &sc->sc_ports[port]; 440 441 if (ms->ms_events.ev_io) 442 return(EBUSY); 443 444 #if NWSMOUSE > 0 445 /* don't allow opening when sending events to wsmouse */ 446 if (ms->ms_wsenabled) 447 return EBUSY; 448 #endif 449 /* initialize potgo bits for mouse mode */ 450 custom.potgo = custom.potgor | (0xf00 << (port * 4)); 451 452 ms->ms_events.ev_io = l->l_proc; 453 ev_init(&ms->ms_events); /* may cause sleep */ 454 ms_enable(ms); 455 return(0); 456 } 457 458 int 459 msclose(dev_t dev, int flags, int mode, struct lwp *l) 460 { 461 struct ms_port *ms; 462 463 ms = MS_DEV2MSPORT(dev); 464 465 ms_disable(ms); 466 ev_fini(&ms->ms_events); 467 ms->ms_events.ev_io = NULL; 468 return(0); 469 } 470 471 int 472 msread(dev_t dev, struct uio *uio, int flags) 473 { 474 struct ms_port *ms; 475 476 ms = MS_DEV2MSPORT(dev); 477 478 return(ev_read(&ms->ms_events, uio, flags)); 479 } 480 481 int 482 msioctl(dev_t dev, u_long cmd, register void *data, int flag, 483 struct lwp *l) 484 { 485 struct ms_port *ms; 486 487 ms = MS_DEV2MSPORT(dev); 488 489 switch (cmd) { 490 case FIONBIO: /* we will remove this someday (soon???) */ 491 return(0); 492 case FIOASYNC: 493 ms->ms_events.ev_async = *(int *)data != 0; 494 return(0); 495 case FIOSETOWN: 496 if (-*(int *)data != ms->ms_events.ev_io->p_pgid 497 && *(int *)data != ms->ms_events.ev_io->p_pid) 498 return(EPERM); 499 return(0); 500 case TIOCSPGRP: 501 if (*(int *)data != ms->ms_events.ev_io->p_pgid) 502 return(EPERM); 503 return(0); 504 case VUIDGFORMAT: /* we only do firm_events */ 505 *(int *)data = VUID_FIRM_EVENT; 506 return(0); 507 case VUIDSFORMAT: 508 if (*(int *)data != VUID_FIRM_EVENT) 509 return(EINVAL); 510 return(0); 511 } 512 return(ENOTTY); 513 } 514 515 int 516 mspoll(dev_t dev, int events, struct lwp *l) 517 { 518 struct ms_port *ms; 519 520 ms = MS_DEV2MSPORT(dev); 521 522 return(ev_poll(&ms->ms_events, events, l)); 523 } 524 525 int 526 mskqfilter(dev_t dev, struct knote *kn) 527 { 528 struct ms_port *ms; 529 530 ms = MS_DEV2MSPORT(dev); 531 532 return (ev_kqfilter(&ms->ms_events, kn)); 533 } 534 535 #if NWSMOUSE > 0 536 537 static int 538 ms_wscons_ioctl(void *cookie, u_long cmd, void *data, int flag, 539 struct lwp *l) 540 { 541 switch(cmd) { 542 case WSMOUSEIO_GTYPE: 543 *(u_int*)data = WSMOUSE_TYPE_AMIGA; 544 return (0); 545 } 546 547 return -1; 548 } 549 550 static int 551 ms_wscons_enable(void *cookie) 552 { 553 struct ms_port *port = cookie; 554 555 /* somebody reading events from us directly? */ 556 if (port->ms_events.ev_io) 557 return EBUSY; 558 559 port->ms_wsenabled = 1; 560 ms_enable(port); 561 562 return 0; 563 } 564 565 static void 566 ms_wscons_disable(void *cookie) 567 { 568 struct ms_port *port = cookie; 569 570 if (port->ms_wsenabled) 571 ms_disable(port); 572 port->ms_wsenabled = 0; 573 } 574 575 #endif 576 577