1 /* $NetBSD: ms.c,v 1.43 2022/08/01 01:32:15 rin 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 1.43 2022/08/01 01:32:15 rin 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_discard = nodiscard, 145 .d_flag = 0 146 }; 147 148 #define MS_UNIT(d) ((minor(d) & ~0x1) >> 1) 149 #define MS_PORT(d) (minor(d) & 0x1) 150 151 /* 152 * Given a dev_t, return a pointer to the port's hardware state. 153 * Assumes the unit to be valid, so do *not* use this in msopen(). 154 */ 155 #define MS_DEV2MSPORT(d) \ 156 (&(((struct ms_softc *)getsoftc(ms_cd, MS_UNIT(d)))->sc_ports[MS_PORT(d)])) 157 158 #if NWSMOUSE > 0 159 /* 160 * Callbacks for wscons. 161 */ 162 static int ms_wscons_enable(void *); 163 static int ms_wscons_ioctl(void *, u_long, void *, int, struct lwp *); 164 static void ms_wscons_disable(void *); 165 166 static struct wsmouse_accessops ms_wscons_accessops = { 167 ms_wscons_enable, 168 ms_wscons_ioctl, 169 ms_wscons_disable 170 }; 171 #endif 172 173 int 174 msmatch(device_t parent, cfdata_t cf, void *aux) 175 { 176 static int ms_matched = 0; 177 178 /* Allow only one instance. */ 179 if (!matchname((char *)aux, "ms") || ms_matched) 180 return 0; 181 182 ms_matched = 1; 183 return 1; 184 } 185 186 void 187 msattach(device_t parent, device_t self, void *aux) 188 { 189 #if NWSMOUSE > 0 190 struct wsmousedev_attach_args waa; 191 #endif 192 struct ms_softc *sc = device_private(self); 193 int i; 194 195 printf("\n"); 196 for (i = 0; i < MS_NPORTS; i++) { 197 sc->sc_ports[i].ms_portno = i; 198 callout_init(&sc->sc_ports[i].ms_intr_ch, 0); 199 #if NWSMOUSE > 0 200 waa.accessops = &ms_wscons_accessops; 201 waa.accesscookie = &sc->sc_ports[i]; 202 203 sc->sc_ports[i].ms_wsenabled = 0; 204 sc->sc_ports[i].ms_wsmousedev = 205 config_found(self, &waa, wsmousedevprint, 206 CFARGS(.iattr = "wsmousedev")); 207 #endif 208 } 209 } 210 211 /* 212 * Amiga mice are hooked up to one of the two "game" ports, where 213 * the main mouse is usually on the first port, and port 2 can 214 * be used by a joystick. Nevertheless, we support two mouse 215 * devices, /dev/mouse0 and /dev/mouse1 (with a link of /dev/mouse to 216 * the device that represents the port of the mouse in use). 217 */ 218 219 /* 220 * enable scanner, called when someone opens the port. 221 */ 222 void 223 ms_enable(struct ms_port *ms) 224 { 225 226 /* 227 * use this as flag to the "interrupt" to tell it when to 228 * shut off (when it's reset to 0). 229 */ 230 ms->ms_ready = 1; 231 232 callout_reset(&ms->ms_intr_ch, 2, msintr, ms); 233 } 234 235 /* 236 * disable scanner. Just set ms_ready to 0, and after the next 237 * timeout taken, no further timeouts will be initiated. 238 */ 239 void 240 ms_disable(struct ms_port *ms) 241 { 242 int s; 243 244 s = splhigh (); 245 ms->ms_ready = 0; 246 /* 247 * sync with the interrupt 248 */ 249 tsleep(ms, PZERO - 1, "mouse-disable", 0); 250 splx(s); 251 } 252 253 254 /* 255 * we're emulating a mousesystems serial mouse here.. 256 */ 257 void 258 msintr(void *arg) 259 { 260 static const char to_one[] = { 1, 2, 2, 4, 4, 4, 4 }; 261 static const int to_id[] = { MS_RIGHT, MS_MIDDLE, 0, MS_LEFT }; 262 struct ms_port *ms = arg; 263 struct firm_event *fe; 264 int mb, ub, d, get, put, any, port; 265 u_char pra, *horc, *verc; 266 u_short pot, count; 267 short dx, dy; 268 269 port = ms->ms_portno; 270 271 horc = ((u_char *) &count) + 1; 272 verc = (u_char *) &count; 273 274 /* 275 * first read the three buttons. 276 */ 277 pot = custom.potgor; 278 pra = ciaa.pra; 279 pot >>= port == 0 ? 8 : 12; /* contains right and middle button */ 280 pra >>= port == 0 ? 6 : 7; /* contains left button */ 281 mb = (pot & 4) / 4 + (pot & 1) * 2 + (pra & 1) * 4; 282 mb ^= 0x07; 283 284 /* 285 * read current values of counter registers 286 */ 287 if (port == 0) 288 count = custom.joy0dat; 289 else 290 count = custom.joy1dat; 291 292 /* 293 * take care of wraparound 294 */ 295 dx = *horc - ms->ms_horc; 296 if (dx < -127) 297 dx += 255; 298 else if (dx > 127) 299 dx -= 255; 300 dy = *verc - ms->ms_verc; 301 if (dy < -127) 302 dy += 255; 303 else if (dy > 127) 304 dy -= 255; 305 306 /* 307 * remember current values for next scan 308 */ 309 ms->ms_horc = *horc; 310 ms->ms_verc = *verc; 311 312 ms->ms_dx = dx; 313 ms->ms_dy = dy; 314 ms->ms_mb = mb; 315 316 #if NWSMOUSE > 0 317 /* 318 * If we have attached wsmouse and we are not opened 319 * directly then pass events to wscons. 320 */ 321 if (ms->ms_wsmousedev && ms->ms_wsenabled) 322 { 323 int buttons = 0; 324 325 if (mb & 4) 326 buttons |= 1; 327 if (mb & 2) 328 buttons |= 2; 329 if (mb & 1) 330 buttons |= 4; 331 332 wsmouse_input(ms->ms_wsmousedev, 333 buttons, 334 dx, -dy, 0, 0, 335 WSMOUSE_INPUT_DELTA); 336 337 } else 338 #endif 339 if (dx || dy || ms->ms_ub != ms->ms_mb) { 340 /* 341 * We have at least one event (mouse button, delta-X, or 342 * delta-Y; possibly all three, and possibly three separate 343 * button events). Deliver these events until we are out of 344 * changes or out of room. As events get delivered, mark them 345 * `unchanged'. 346 */ 347 any = 0; 348 get = ms->ms_events.ev_get; 349 put = ms->ms_events.ev_put; 350 fe = &ms->ms_events.ev_q[put]; 351 352 mb = ms->ms_mb; 353 ub = ms->ms_ub; 354 while ((d = mb ^ ub) != 0) { 355 /* 356 * Mouse button change. Convert up to three changes 357 * to the `first' change, and drop it into the event 358 * queue. 359 */ 360 if ((++put) % EV_QSIZE == get) { 361 put--; 362 goto out; 363 } 364 365 d = to_one[d - 1]; /* from 1..7 to {1,2,4} */ 366 fe->id = to_id[d - 1]; /* from {1,2,4} to ID */ 367 fe->value = mb & d ? VKEY_DOWN : VKEY_UP; 368 firm_gettime(fe); 369 fe++; 370 371 if (put >= EV_QSIZE) { 372 put = 0; 373 fe = &ms->ms_events.ev_q[0]; 374 } 375 any = 1; 376 377 ub ^= d; 378 } 379 if (ms->ms_dx) { 380 if ((++put) % EV_QSIZE == get) { 381 put--; 382 goto out; 383 } 384 385 fe->id = LOC_X_DELTA; 386 fe->value = ms->ms_dx; 387 firm_gettime(fe); 388 fe++; 389 390 if (put >= EV_QSIZE) { 391 put = 0; 392 fe = &ms->ms_events.ev_q[0]; 393 } 394 any = 1; 395 396 ms->ms_dx = 0; 397 } 398 if (ms->ms_dy) { 399 if ((++put) % EV_QSIZE == get) { 400 put--; 401 goto out; 402 } 403 404 fe->id = LOC_Y_DELTA; 405 fe->value = ms->ms_dy; 406 firm_gettime(fe); 407 fe++; 408 409 if (put >= EV_QSIZE) { 410 put = 0; 411 fe = &ms->ms_events.ev_q[0]; 412 } 413 any = 1; 414 415 ms->ms_dy = 0; 416 } 417 out: 418 if (any) { 419 ms->ms_ub = ub; 420 ms->ms_events.ev_put = put; 421 EV_WAKEUP(&ms->ms_events); 422 } 423 } 424 425 /* 426 * reschedule handler, or if terminating, 427 * handshake with ms_disable 428 */ 429 if (ms->ms_ready) 430 callout_reset(&ms->ms_intr_ch, 2, msintr, ms); 431 else 432 wakeup(ms); 433 } 434 435 int 436 msopen(dev_t dev, int flags, int mode, struct lwp *l) 437 { 438 struct ms_softc *sc; 439 struct ms_port *ms; 440 int unit, port; 441 442 unit = MS_UNIT(dev); 443 sc = (struct ms_softc *)getsoftc(ms_cd, unit); 444 445 if (sc == NULL) 446 return(EXDEV); 447 448 port = MS_PORT(dev); 449 ms = &sc->sc_ports[port]; 450 451 if (ms->ms_events.ev_io) 452 return(EBUSY); 453 454 #if NWSMOUSE > 0 455 /* don't allow opening when sending events to wsmouse */ 456 if (ms->ms_wsenabled) 457 return EBUSY; 458 #endif 459 /* initialize potgo bits for mouse mode */ 460 custom.potgo = custom.potgor | (0xf00 << (port * 4)); 461 462 ms->ms_events.ev_io = l->l_proc; 463 ev_init(&ms->ms_events); /* may cause sleep */ 464 ms_enable(ms); 465 return(0); 466 } 467 468 int 469 msclose(dev_t dev, int flags, int mode, struct lwp *l) 470 { 471 struct ms_port *ms; 472 473 ms = MS_DEV2MSPORT(dev); 474 475 ms_disable(ms); 476 ev_fini(&ms->ms_events); 477 ms->ms_events.ev_io = NULL; 478 return(0); 479 } 480 481 int 482 msread(dev_t dev, struct uio *uio, int flags) 483 { 484 struct ms_port *ms; 485 486 ms = MS_DEV2MSPORT(dev); 487 488 return(ev_read(&ms->ms_events, uio, flags)); 489 } 490 491 int 492 msioctl(dev_t dev, u_long cmd, register void *data, int flag, 493 struct lwp *l) 494 { 495 struct ms_port *ms; 496 497 ms = MS_DEV2MSPORT(dev); 498 499 switch (cmd) { 500 case FIONBIO: /* we will remove this someday (soon???) */ 501 return(0); 502 case FIOASYNC: 503 ms->ms_events.ev_async = *(int *)data != 0; 504 return(0); 505 case FIOSETOWN: 506 if (-*(int *)data != ms->ms_events.ev_io->p_pgid 507 && *(int *)data != ms->ms_events.ev_io->p_pid) 508 return(EPERM); 509 return(0); 510 case TIOCSPGRP: 511 if (*(int *)data != ms->ms_events.ev_io->p_pgid) 512 return(EPERM); 513 return(0); 514 case VUIDGFORMAT: /* we only do firm_events */ 515 *(int *)data = VUID_FIRM_EVENT; 516 return(0); 517 case VUIDSFORMAT: 518 if (*(int *)data != VUID_FIRM_EVENT) 519 return(EINVAL); 520 return(0); 521 } 522 return(ENOTTY); 523 } 524 525 int 526 mspoll(dev_t dev, int events, struct lwp *l) 527 { 528 struct ms_port *ms; 529 530 ms = MS_DEV2MSPORT(dev); 531 532 return(ev_poll(&ms->ms_events, events, l)); 533 } 534 535 int 536 mskqfilter(dev_t dev, struct knote *kn) 537 { 538 struct ms_port *ms; 539 540 ms = MS_DEV2MSPORT(dev); 541 542 return (ev_kqfilter(&ms->ms_events, kn)); 543 } 544 545 #if NWSMOUSE > 0 546 547 static int 548 ms_wscons_ioctl(void *cookie, u_long cmd, void *data, int flag, 549 struct lwp *l) 550 { 551 switch(cmd) { 552 case WSMOUSEIO_GTYPE: 553 *(u_int*)data = WSMOUSE_TYPE_AMIGA; 554 return (0); 555 } 556 557 return EPASSTHROUGH; 558 } 559 560 static int 561 ms_wscons_enable(void *cookie) 562 { 563 struct ms_port *port = cookie; 564 565 /* somebody reading events from us directly? */ 566 if (port->ms_events.ev_io) 567 return EBUSY; 568 569 port->ms_wsenabled = 1; 570 ms_enable(port); 571 572 return 0; 573 } 574 575 static void 576 ms_wscons_disable(void *cookie) 577 { 578 struct ms_port *port = cookie; 579 580 if (port->ms_wsenabled) 581 ms_disable(port); 582 port->ms_wsenabled = 0; 583 } 584 585 #endif 586 587
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