1 /* $NetBSD: ms.c,v 1.38 2014/03/16 05:20:22 dholland 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 1.38 2014/03/16 05:20:22 dholland 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(device_t, device_t, void *); 89 int msmatch(device_t, cfdata_t, 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 device_t 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 ms_port sc_ports[MS_NPORTS]; 115 }; 116 117 CFATTACH_DECL_NEW(ms, sizeof(struct ms_softc), 118 msmatch, msattach, NULL, NULL); 119 120 void msintr(void *); 121 void ms_enable(struct ms_port *); 122 void ms_disable(struct ms_port *); 123 124 extern struct cfdriver ms_cd; 125 126 dev_type_open(msopen); 127 dev_type_close(msclose); 128 dev_type_read(msread); 129 dev_type_ioctl(msioctl); 130 dev_type_poll(mspoll); 131 dev_type_kqfilter(mskqfilter); 132 133 const struct cdevsw ms_cdevsw = { 134 .d_open = msopen, 135 .d_close = msclose, 136 .d_read = msread, 137 .d_write = nowrite, 138 .d_ioctl = msioctl, 139 .d_stop = nostop, 140 .d_tty = notty, 141 .d_poll = mspoll, 142 .d_mmap = nommap, 143 .d_kqfilter = mskqfilter, 144 .d_flag = 0 145 }; 146 147 #define MS_UNIT(d) ((minor(d) & ~0x1) >> 1) 148 #define MS_PORT(d) (minor(d) & 0x1) 149 150 /* 151 * Given a dev_t, return a pointer to the port's hardware state. 152 * Assumes the unit to be valid, so do *not* use this in msopen(). 153 */ 154 #define MS_DEV2MSPORT(d) \ 155 (&(((struct ms_softc *)getsoftc(ms_cd, MS_UNIT(d)))->sc_ports[MS_PORT(d)])) 156 157 #if NWSMOUSE > 0 158 /* 159 * Callbacks for wscons. 160 */ 161 static int ms_wscons_enable(void *); 162 static int ms_wscons_ioctl(void *, u_long, void *, int, struct lwp *); 163 static void ms_wscons_disable(void *); 164 165 static struct wsmouse_accessops ms_wscons_accessops = { 166 ms_wscons_enable, 167 ms_wscons_ioctl, 168 ms_wscons_disable 169 }; 170 #endif 171 172 int 173 msmatch(device_t parent, cfdata_t cf, void *aux) 174 { 175 static int ms_matched = 0; 176 177 /* Allow only one instance. */ 178 if (!matchname((char *)aux, "ms") || ms_matched) 179 return 0; 180 181 ms_matched = 1; 182 return 1; 183 } 184 185 void 186 msattach(device_t parent, device_t self, void *aux) 187 { 188 #if NWSMOUSE > 0 189 struct wsmousedev_attach_args waa; 190 #endif 191 struct ms_softc *sc = device_private(self); 192 int i; 193 194 printf("\n"); 195 for (i = 0; i < MS_NPORTS; i++) { 196 sc->sc_ports[i].ms_portno = i; 197 callout_init(&sc->sc_ports[i].ms_intr_ch, 0); 198 #if NWSMOUSE > 0 199 waa.accessops = &ms_wscons_accessops; 200 waa.accesscookie = &sc->sc_ports[i]; 201 202 sc->sc_ports[i].ms_wsenabled = 0; 203 sc->sc_ports[i].ms_wsmousedev = 204 config_found(self, &waa, wsmousedevprint); 205 #endif 206 } 207 } 208 209 /* 210 * Amiga mice are hooked up to one of the two "game" ports, where 211 * the main mouse is usually on the first port, and port 2 can 212 * be used by a joystick. Nevertheless, we support two mouse 213 * devices, /dev/mouse0 and /dev/mouse1 (with a link of /dev/mouse to 214 * the device that represents the port of the mouse in use). 215 */ 216 217 /* 218 * enable scanner, called when someone opens the port. 219 */ 220 void 221 ms_enable(struct ms_port *ms) 222 { 223 224 /* 225 * use this as flag to the "interrupt" to tell it when to 226 * shut off (when it's reset to 0). 227 */ 228 ms->ms_ready = 1; 229 230 callout_reset(&ms->ms_intr_ch, 2, msintr, ms); 231 } 232 233 /* 234 * disable scanner. Just set ms_ready to 0, and after the next 235 * timeout taken, no further timeouts will be initiated. 236 */ 237 void 238 ms_disable(struct ms_port *ms) 239 { 240 int s; 241 242 s = splhigh (); 243 ms->ms_ready = 0; 244 /* 245 * sync with the interrupt 246 */ 247 tsleep(ms, PZERO - 1, "mouse-disable", 0); 248 splx(s); 249 } 250 251 252 /* 253 * we're emulating a mousesystems serial mouse here.. 254 */ 255 void 256 msintr(void *arg) 257 { 258 static const char to_one[] = { 1, 2, 2, 4, 4, 4, 4 }; 259 static const int to_id[] = { MS_RIGHT, MS_MIDDLE, 0, MS_LEFT }; 260 struct ms_port *ms = arg; 261 struct firm_event *fe; 262 int mb, ub, d, get, put, any, port; 263 u_char pra, *horc, *verc; 264 u_short pot, count; 265 short dx, dy; 266 267 port = ms->ms_portno; 268 269 horc = ((u_char *) &count) + 1; 270 verc = (u_char *) &count; 271 272 /* 273 * first read the three buttons. 274 */ 275 pot = custom.potgor; 276 pra = ciaa.pra; 277 pot >>= port == 0 ? 8 : 12; /* contains right and middle button */ 278 pra >>= port == 0 ? 6 : 7; /* contains left button */ 279 mb = (pot & 4) / 4 + (pot & 1) * 2 + (pra & 1) * 4; 280 mb ^= 0x07; 281 282 /* 283 * read current values of counter registers 284 */ 285 if (port == 0) 286 count = custom.joy0dat; 287 else 288 count = custom.joy1dat; 289 290 /* 291 * take care of wraparound 292 */ 293 dx = *horc - ms->ms_horc; 294 if (dx < -127) 295 dx += 255; 296 else if (dx > 127) 297 dx -= 255; 298 dy = *verc - ms->ms_verc; 299 if (dy < -127) 300 dy += 255; 301 else if (dy > 127) 302 dy -= 255; 303 304 /* 305 * remember current values for next scan 306 */ 307 ms->ms_horc = *horc; 308 ms->ms_verc = *verc; 309 310 ms->ms_dx = dx; 311 ms->ms_dy = dy; 312 ms->ms_mb = mb; 313 314 #if NWSMOUSE > 0 315 /* 316 * If we have attached wsmouse and we are not opened 317 * directly then pass events to wscons. 318 */ 319 if (ms->ms_wsmousedev && ms->ms_wsenabled) 320 { 321 int buttons = 0; 322 323 if (mb & 4) 324 buttons |= 1; 325 if (mb & 2) 326 buttons |= 2; 327 if (mb & 1) 328 buttons |= 4; 329 330 wsmouse_input(ms->ms_wsmousedev, 331 buttons, 332 dx, -dy, 0, 0, 333 WSMOUSE_INPUT_DELTA); 334 335 } else 336 #endif 337 if (dx || dy || ms->ms_ub != ms->ms_mb) { 338 /* 339 * We have at least one event (mouse button, delta-X, or 340 * delta-Y; possibly all three, and possibly three separate 341 * button events). Deliver these events until we are out of 342 * changes or out of room. As events get delivered, mark them 343 * `unchanged'. 344 */ 345 any = 0; 346 get = ms->ms_events.ev_get; 347 put = ms->ms_events.ev_put; 348 fe = &ms->ms_events.ev_q[put]; 349 350 mb = ms->ms_mb; 351 ub = ms->ms_ub; 352 while ((d = mb ^ ub) != 0) { 353 /* 354 * Mouse button change. Convert up to three changes 355 * to the `first' change, and drop it into the event 356 * queue. 357 */ 358 if ((++put) % EV_QSIZE == get) { 359 put--; 360 goto out; 361 } 362 363 d = to_one[d - 1]; /* from 1..7 to {1,2,4} */ 364 fe->id = to_id[d - 1]; /* from {1,2,4} to ID */ 365 fe->value = mb & d ? VKEY_DOWN : VKEY_UP; 366 firm_gettime(fe); 367 fe++; 368 369 if (put >= EV_QSIZE) { 370 put = 0; 371 fe = &ms->ms_events.ev_q[0]; 372 } 373 any = 1; 374 375 ub ^= d; 376 } 377 if (ms->ms_dx) { 378 if ((++put) % EV_QSIZE == get) { 379 put--; 380 goto out; 381 } 382 383 fe->id = LOC_X_DELTA; 384 fe->value = ms->ms_dx; 385 firm_gettime(fe); 386 fe++; 387 388 if (put >= EV_QSIZE) { 389 put = 0; 390 fe = &ms->ms_events.ev_q[0]; 391 } 392 any = 1; 393 394 ms->ms_dx = 0; 395 } 396 if (ms->ms_dy) { 397 if ((++put) % EV_QSIZE == get) { 398 put--; 399 goto out; 400 } 401 402 fe->id = LOC_Y_DELTA; 403 fe->value = ms->ms_dy; 404 firm_gettime(fe); 405 fe++; 406 407 if (put >= EV_QSIZE) { 408 put = 0; 409 fe = &ms->ms_events.ev_q[0]; 410 } 411 any = 1; 412 413 ms->ms_dy = 0; 414 } 415 out: 416 if (any) { 417 ms->ms_ub = ub; 418 ms->ms_events.ev_put = put; 419 EV_WAKEUP(&ms->ms_events); 420 } 421 } 422 423 /* 424 * reschedule handler, or if terminating, 425 * handshake with ms_disable 426 */ 427 if (ms->ms_ready) 428 callout_reset(&ms->ms_intr_ch, 2, msintr, ms); 429 else 430 wakeup(ms); 431 } 432 433 int 434 msopen(dev_t dev, int flags, int mode, struct lwp *l) 435 { 436 struct ms_softc *sc; 437 struct ms_port *ms; 438 int unit, port; 439 440 unit = MS_UNIT(dev); 441 sc = (struct ms_softc *)getsoftc(ms_cd, unit); 442 443 if (sc == NULL) 444 return(EXDEV); 445 446 port = MS_PORT(dev); 447 ms = &sc->sc_ports[port]; 448 449 if (ms->ms_events.ev_io) 450 return(EBUSY); 451 452 #if NWSMOUSE > 0 453 /* don't allow opening when sending events to wsmouse */ 454 if (ms->ms_wsenabled) 455 return EBUSY; 456 #endif 457 /* initialize potgo bits for mouse mode */ 458 custom.potgo = custom.potgor | (0xf00 << (port * 4)); 459 460 ms->ms_events.ev_io = l->l_proc; 461 ev_init(&ms->ms_events); /* may cause sleep */ 462 ms_enable(ms); 463 return(0); 464 } 465 466 int 467 msclose(dev_t dev, int flags, int mode, struct lwp *l) 468 { 469 struct ms_port *ms; 470 471 ms = MS_DEV2MSPORT(dev); 472 473 ms_disable(ms); 474 ev_fini(&ms->ms_events); 475 ms->ms_events.ev_io = NULL; 476 return(0); 477 } 478 479 int 480 msread(dev_t dev, struct uio *uio, int flags) 481 { 482 struct ms_port *ms; 483 484 ms = MS_DEV2MSPORT(dev); 485 486 return(ev_read(&ms->ms_events, uio, flags)); 487 } 488 489 int 490 msioctl(dev_t dev, u_long cmd, register void *data, int flag, 491 struct lwp *l) 492 { 493 struct ms_port *ms; 494 495 ms = MS_DEV2MSPORT(dev); 496 497 switch (cmd) { 498 case FIONBIO: /* we will remove this someday (soon???) */ 499 return(0); 500 case FIOASYNC: 501 ms->ms_events.ev_async = *(int *)data != 0; 502 return(0); 503 case FIOSETOWN: 504 if (-*(int *)data != ms->ms_events.ev_io->p_pgid 505 && *(int *)data != ms->ms_events.ev_io->p_pid) 506 return(EPERM); 507 return(0); 508 case TIOCSPGRP: 509 if (*(int *)data != ms->ms_events.ev_io->p_pgid) 510 return(EPERM); 511 return(0); 512 case VUIDGFORMAT: /* we only do firm_events */ 513 *(int *)data = VUID_FIRM_EVENT; 514 return(0); 515 case VUIDSFORMAT: 516 if (*(int *)data != VUID_FIRM_EVENT) 517 return(EINVAL); 518 return(0); 519 } 520 return(ENOTTY); 521 } 522 523 int 524 mspoll(dev_t dev, int events, struct lwp *l) 525 { 526 struct ms_port *ms; 527 528 ms = MS_DEV2MSPORT(dev); 529 530 return(ev_poll(&ms->ms_events, events, l)); 531 } 532 533 int 534 mskqfilter(dev_t dev, struct knote *kn) 535 { 536 struct ms_port *ms; 537 538 ms = MS_DEV2MSPORT(dev); 539 540 return (ev_kqfilter(&ms->ms_events, kn)); 541 } 542 543 #if NWSMOUSE > 0 544 545 static int 546 ms_wscons_ioctl(void *cookie, u_long cmd, void *data, int flag, 547 struct lwp *l) 548 { 549 switch(cmd) { 550 case WSMOUSEIO_GTYPE: 551 *(u_int*)data = WSMOUSE_TYPE_AMIGA; 552 return (0); 553 } 554 555 return -1; 556 } 557 558 static int 559 ms_wscons_enable(void *cookie) 560 { 561 struct ms_port *port = cookie; 562 563 /* somebody reading events from us directly? */ 564 if (port->ms_events.ev_io) 565 return EBUSY; 566 567 port->ms_wsenabled = 1; 568 ms_enable(port); 569 570 return 0; 571 } 572 573 static void 574 ms_wscons_disable(void *cookie) 575 { 576 struct ms_port *port = cookie; 577 578 if (port->ms_wsenabled) 579 ms_disable(port); 580 port->ms_wsenabled = 0; 581 } 582 583 #endif 584 585