opms.c revision 1.21.18.1
1 /* $NetBSD: opms.c,v 1.21.18.1 2017/04/27 05:36:32 pgoyette Exp $ */ 2 /* $OpenBSD: pccons.c,v 1.22 1999/01/30 22:39:37 imp Exp $ */ 3 /* NetBSD: pms.c,v 1.21 1995/04/18 02:25:18 mycroft Exp */ 4 5 /*- 6 * Copyright (c) 1990 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * William Jolitz and Don Ahn. 11 * 12 * Copyright (c) 1994 Charles M. Hannum. 13 * Copyright (c) 1992, 1993 Erik Forsberg. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 3. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)pccons.c 5.11 (Berkeley) 5/21/91 40 */ 41 42 /*- 43 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. All rights reserved. 44 * 45 * This code is derived from software contributed to Berkeley by 46 * William Jolitz and Don Ahn. 47 * 48 * Copyright (c) 1994 Charles M. Hannum. 49 * Copyright (c) 1992, 1993 Erik Forsberg. 50 * 51 * Redistribution and use in source and binary forms, with or without 52 * modification, are permitted provided that the following conditions 53 * are met: 54 * 1. Redistributions of source code must retain the above copyright 55 * notice, this list of conditions and the following disclaimer. 56 * 2. Redistributions in binary form must reproduce the above copyright 57 * notice, this list of conditions and the following disclaimer in the 58 * documentation and/or other materials provided with the distribution. 59 * 3. All advertising materials mentioning features or use of this software 60 * must display the following acknowledgement: 61 * This product includes software developed by the University of 62 * California, Berkeley and its contributors. 63 * 4. Neither the name of the University nor the names of its contributors 64 * may be used to endorse or promote products derived from this software 65 * without specific prior written permission. 66 * 67 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 68 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 69 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 70 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 71 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 72 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 73 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 74 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 75 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 76 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 77 * SUCH DAMAGE. 78 * 79 * @(#)pccons.c 5.11 (Berkeley) 5/21/91 80 */ 81 82 #include <sys/cdefs.h> 83 __KERNEL_RCSID(0, "$NetBSD: opms.c,v 1.21.18.1 2017/04/27 05:36:32 pgoyette Exp $"); 84 85 #include <sys/param.h> 86 #include <sys/systm.h> 87 #include <sys/vnode.h> 88 #include <sys/poll.h> 89 #include <sys/tty.h> 90 #include <sys/device.h> 91 #include <sys/proc.h> 92 #include <sys/conf.h> 93 94 #include <sys/bus.h> 95 #include <machine/kbdreg.h> 96 #include <machine/mouse.h> 97 98 #include <arc/dev/pcconsvar.h> 99 #include <arc/dev/opmsvar.h> 100 101 #include "ioconf.h" 102 103 #define PMSUNIT(dev) (minor(dev)) 104 105 /* status bits */ 106 #define PMS_OBUF_FULL 0x01 107 #define PMS_IBUF_FULL 0x02 108 109 /* controller commands */ 110 #define PMS_INT_ENABLE 0x47 /* enable controller interrupts */ 111 #define PMS_INT_DISABLE 0x65 /* disable controller interrupts */ 112 #define PMS_AUX_ENABLE 0xa7 /* enable auxiliary port */ 113 #define PMS_AUX_DISABLE 0xa8 /* disable auxiliary port */ 114 #define PMS_MAGIC_1 0xa9 /* XXX */ 115 116 #define PMS_8042_CMD 0x65 117 118 /* mouse commands */ 119 #define PMS_SET_SCALE11 0xe6 /* set scaling 1:1 */ 120 #define PMS_SET_SCALE21 0xe7 /* set scaling 2:1 */ 121 #define PMS_SET_RES 0xe8 /* set resolution */ 122 #define PMS_GET_SCALE 0xe9 /* get scaling factor */ 123 #define PMS_SET_STREAM 0xea /* set streaming mode */ 124 #define PMS_SET_SAMPLE 0xf3 /* set sampling rate */ 125 #define PMS_DEV_ENABLE 0xf4 /* mouse on */ 126 #define PMS_DEV_DISABLE 0xf5 /* mouse off */ 127 #define PMS_RESET 0xff /* reset */ 128 129 #define PMS_CHUNK 128 /* chunk size for read */ 130 #define PMS_BSIZE 1020 /* buffer size */ 131 132 #define FLUSHQ(q) { if((q)->c_cc) ndflush(q, (q)->c_cc); } 133 134 dev_type_open(opmsopen); 135 dev_type_close(opmsclose); 136 dev_type_read(opmsread); 137 dev_type_ioctl(opmsioctl); 138 dev_type_poll(opmspoll); 139 dev_type_kqfilter(opmskqfilter); 140 141 const struct cdevsw opms_cdevsw = { 142 .d_open = opmsopen, 143 .d_close = opmsclose, 144 .d_read = opmsread, 145 .d_write = nowrite, 146 .d_ioctl = opmsioctl, 147 .d_stop = nostop, 148 .d_tty = notty, 149 .d_poll = opmspoll, 150 .d_mmap = nommap, 151 .d_kqfilter = opmskqfilter, 152 .d_discard = nodiscard, 153 .d_flag = 0 154 }; 155 156 static inline void pms_dev_cmd(uint8_t); 157 static inline void pms_aux_cmd(uint8_t); 158 static inline void pms_pit_cmd(uint8_t); 159 160 static inline void 161 pms_dev_cmd(uint8_t value) 162 { 163 164 kbd_flush_input(); 165 kbd_cmd_write_1(0xd4); 166 kbd_flush_input(); 167 kbd_data_write_1(value); 168 } 169 170 static inline void 171 pms_aux_cmd(uint8_t value) 172 { 173 174 kbd_flush_input(); 175 kbd_cmd_write_1(value); 176 } 177 178 static inline void 179 pms_pit_cmd(uint8_t value) 180 { 181 182 kbd_flush_input(); 183 kbd_cmd_write_1(0x60); 184 kbd_flush_input(); 185 kbd_data_write_1(value); 186 } 187 188 int opms_common_match(bus_space_tag_t kbd_iot, struct pccons_config *config) 189 { 190 uint8_t x; 191 192 kbd_context_init(kbd_iot, config); 193 194 pms_dev_cmd(KBC_RESET); 195 pms_aux_cmd(PMS_MAGIC_1); 196 delay(10000); 197 x = kbd_data_read_1(); 198 pms_pit_cmd(PMS_INT_DISABLE); 199 if (x & 0x04) 200 return 0; 201 202 return 1; 203 } 204 205 void 206 opms_common_attach(struct opms_softc *sc, bus_space_tag_t opms_iot, 207 struct pccons_config *config) 208 { 209 210 kbd_context_init(opms_iot, config); 211 selinit(&sc->sc_rsel); 212 213 /* Other initialization was done by opmsprobe. */ 214 sc->sc_state = 0; 215 } 216 217 int 218 opmsopen(dev_t dev, int flag, int mode, struct lwp *l) 219 { 220 device_t self; 221 struct opms_softc *sc; 222 223 self = device_lookup_acquire(&opms_cd, PMSUNIT(dev)); 224 if (self == NULL) 225 return EXNIO; 226 sc = device_private(self); 227 if (!sc) { 228 device_release(self); 229 return ENXIO; 230 } 231 232 if (sc->sc_state & PMS_OPEN) { 233 device_release(self); 234 return EBUSY; 235 } 236 237 if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1) { 238 device_release(self); 239 return ENOMEM; 240 } 241 242 sc->sc_state |= PMS_OPEN; 243 sc->sc_status = 0; 244 sc->sc_x = sc->sc_y = 0; 245 246 /* Enable interrupts. */ 247 pms_dev_cmd(PMS_DEV_ENABLE); 248 pms_aux_cmd(PMS_AUX_ENABLE); 249 pms_dev_cmd(PMS_SET_RES); 250 pms_dev_cmd(3); /* 8 counts/mm */ 251 pms_dev_cmd(PMS_SET_SCALE21); 252 #if 0 253 pms_dev_cmd(PMS_SET_SAMPLE); 254 pms_dev_cmd(100); /* 100 samples/sec */ 255 pms_dev_cmd(PMS_SET_STREAM); 256 #endif 257 pms_pit_cmd(PMS_INT_ENABLE); 258 259 device_release(self); 260 return 0; 261 } 262 263 int 264 opmsclose(dev_t dev, int flag, int mode, struct lwp *l) 265 { 266 device_t self; 267 struct opms_softc *sc; 268 269 self = device_lookup_acquire(&opms_cd, PMSUNIT(dev)); 270 if (self == NULL) 271 return ENXIO; 272 sc = device_private(self); 273 if (sc == NULL) { 274 device_release(self); 275 return ENXIO; 276 } 277 278 /* Disable interrupts. */ 279 pms_dev_cmd(PMS_DEV_DISABLE); 280 pms_pit_cmd(PMS_INT_DISABLE); 281 pms_aux_cmd(PMS_AUX_DISABLE); 282 283 sc->sc_state &= ~PMS_OPEN; 284 285 clfree(&sc->sc_q); 286 287 device_release(self); 288 return 0; 289 } 290 291 int 292 opmsread(dev_t dev, struct uio *uio, int flag) 293 { 294 device_t self; 295 struct opms_softc *sc; 296 int s; 297 int error = 0; 298 size_t length; 299 u_char buffer[PMS_CHUNK]; 300 301 self = device_lookup_acquire(&opms_cd, PMSUNIT(dev)); 302 if (self == NULL) 303 return ENXIO; 304 sc = device_private(self); 305 if (sc == NULL) { 306 device_release(self); 307 return ENXIO; 308 } 309 310 /* Block until mouse activity occurred. */ 311 312 s = spltty(); 313 while (sc->sc_q.c_cc == 0) { 314 if (flag & IO_NDELAY) { 315 splx(s); 316 device_release(self); 317 return EWOULDBLOCK; 318 } 319 sc->sc_state |= PMS_ASLP; 320 error = tsleep((void *)sc, PZERO | PCATCH, "pmsrea", 0); 321 if (error) { 322 sc->sc_state &= ~PMS_ASLP; 323 splx(s); 324 device_release(self); 325 return error; 326 } 327 } 328 splx(s); 329 330 /* Transfer as many chunks as possible. */ 331 332 while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0) { 333 length = min(sc->sc_q.c_cc, uio->uio_resid); 334 if (length > sizeof(buffer)) 335 length = sizeof(buffer); 336 337 /* Remove a small chunk from the input queue. */ 338 (void) q_to_b(&sc->sc_q, buffer, length); 339 340 /* Copy the data to the user process. */ 341 error = uiomove(buffer, length, uio); 342 if (error) 343 break; 344 } 345 346 device_release(self); 347 return error; 348 } 349 350 int 351 opmsioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 352 { 353 device_t self; 354 struct opms_softc *sc; 355 struct mouseinfo info; 356 int s; 357 int error; 358 359 self = device_lookup_acquire(&opms_cd, PMSUNIT(dev)); 360 if (self == NULL) 361 return ENXIO; 362 sc = device_private(self); 363 if (sc == NULL) { 364 device_release(self); 365 return ENXIO; 366 } 367 switch (cmd) { 368 case MOUSEIOCREAD: 369 s = spltty(); 370 371 info.status = sc->sc_status; 372 if (sc->sc_x || sc->sc_y) 373 info.status |= MOVEMENT; 374 375 if (sc->sc_x > 127) 376 info.xmotion = 127; 377 else if (sc->sc_x < -127) 378 /* Bounding at -127 avoids a bug in XFree86. */ 379 info.xmotion = -127; 380 else 381 info.xmotion = sc->sc_x; 382 383 if (sc->sc_y > 127) 384 info.ymotion = 127; 385 else if (sc->sc_y < -127) 386 info.ymotion = -127; 387 else 388 info.ymotion = sc->sc_y; 389 390 /* Reset historical information. */ 391 sc->sc_x = sc->sc_y = 0; 392 sc->sc_status &= ~BUTCHNGMASK; 393 ndflush(&sc->sc_q, sc->sc_q.c_cc); 394 395 splx(s); 396 error = copyout(&info, addr, sizeof(struct mouseinfo)); 397 break; 398 default: 399 error = EINVAL; 400 break; 401 } 402 403 device_release(self); 404 return error; 405 } 406 407 /* Masks for the first byte of a packet */ 408 #define PS2LBUTMASK 0x01 409 #define PS2RBUTMASK 0x02 410 #define PS2MBUTMASK 0x04 411 412 int 413 opmsintr(void *arg) 414 { 415 struct opms_softc *sc = arg; 416 static int state = 0; 417 static u_char buttons; 418 u_char changed; 419 static char dx, dy; 420 u_char buffer[5]; 421 422 if ((sc->sc_state & PMS_OPEN) == 0) { 423 /* Interrupts are not expected. Discard the byte. */ 424 kbd_flush_input(); 425 return 0; 426 } 427 428 switch (state) { 429 430 case 0: 431 buttons = kbd_data_read_1(); 432 if ((buttons & 0xc0) == 0) 433 ++state; 434 break; 435 436 case 1: 437 dx = kbd_data_read_1(); 438 /* Bounding at -127 avoids a bug in XFree86. */ 439 dx = (dx == -128) ? -127 : dx; 440 ++state; 441 break; 442 443 case 2: 444 dy = kbd_data_read_1(); 445 dy = (dy == -128) ? -127 : dy; 446 state = 0; 447 448 buttons = ((buttons & PS2LBUTMASK) << 2) | 449 ((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1); 450 changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3; 451 sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) | 452 changed; 453 454 if (dx || dy || changed) { 455 /* Update accumulated movements. */ 456 sc->sc_x += dx; 457 sc->sc_y += dy; 458 459 /* Add this event to the queue. */ 460 buffer[0] = 0x80 | (buttons & BUTSTATMASK); 461 if(dx < 0) 462 buffer[0] |= 0x10; 463 buffer[1] = dx & 0x7f; 464 if(dy < 0) 465 buffer[0] |= 0x20; 466 buffer[2] = dy & 0x7f; 467 buffer[3] = buffer[4] = 0; 468 (void) b_to_q(buffer, sizeof buffer, &sc->sc_q); 469 470 if (sc->sc_state & PMS_ASLP) { 471 sc->sc_state &= ~PMS_ASLP; 472 wakeup((void *)sc); 473 } 474 selnotify(&sc->sc_rsel, 0, 0); 475 } 476 477 break; 478 } 479 return -1; 480 } 481 482 int 483 opmspoll(dev_t dev, int events, struct lwp *l) 484 { 485 device_t self; 486 struct opms_softc *sc; 487 int revents = 0; 488 int s = spltty(); 489 490 self = device_lookup_acquire(&opms_cd, PMSUNIT(dev)); 491 if (self == NULL) 492 return 0; 493 sc = device_private(self); 494 if (sc == NULL) { 495 device_release(self); 496 return 0; 497 } 498 499 if (events & (POLLIN | POLLRDNORM)) { 500 if (sc->sc_q.c_cc > 0) 501 revents |= events & (POLLIN | POLLRDNORM); 502 else 503 selrecord(l, &sc->sc_rsel); 504 } 505 506 splx(s); 507 device_release(self); 508 return revents; 509 } 510 511 static void 512 filt_opmsrdetach(struct knote *kn) 513 { 514 struct opms_softc *sc = kn->kn_hook; 515 int s; 516 517 s = spltty(); 518 SLIST_REMOVE(&sc->sc_rsel.sel_klist, kn, knote, kn_selnext); 519 splx(s); 520 } 521 522 static int 523 filt_opmsread(struct knote *kn, long hint) 524 { 525 struct opms_softc *sc = kn->kn_hook; 526 527 kn->kn_data = sc->sc_q.c_cc; 528 return kn->kn_data > 0; 529 } 530 531 static const struct filterops opmsread_filtops = 532 { 1, NULL, filt_opmsrdetach, filt_opmsread }; 533 534 int 535 opmskqfilter(dev_t dev, struct knote *kn) 536 { 537 device_t self; 538 struct opms_softc *sc; 539 struct klist *klist; 540 int s; 541 542 self = device_lookup_acquire(&opms_cd, PMSUNIT(dev)); 543 if (self == NULL) 544 return 1; 545 sc = device_private(self); 546 if (sc == NULL) { 547 device_release(self); 548 return 1; 549 } 550 551 switch (kn->kn_filter) { 552 case EVFILT_READ: 553 klist = &sc->sc_rsel.sel_klist; 554 kn->kn_fop = &opmsread_filtops; 555 break; 556 557 default: 558 device_release(self); 559 return 1; 560 } 561 562 kn->kn_hook = sc; 563 564 s = spltty(); 565 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 566 splx(s); 567 568 device_release(self); 569 return 0; 570 } 571
Indexes created Tue Sep 30 11:09:46 GMT 2025