opms.c revision 1.16
1 /* $NetBSD: opms.c,v 1.16 2007/03/04 05:59:33 christos 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 1.16 2007/03/04 05:59:33 christos 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 <machine/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 opmsopen, opmsclose, opmsread, nowrite, opmsioctl, 143 nostop, notty, opmspoll, nommap, opmskqfilter, 144 }; 145 146 static inline void pms_dev_cmd(uint8_t); 147 static inline void pms_aux_cmd(uint8_t); 148 static inline void pms_pit_cmd(uint8_t); 149 150 static inline void 151 pms_dev_cmd(uint8_t value) 152 { 153 154 kbd_flush_input(); 155 kbd_cmd_write_1(0xd4); 156 kbd_flush_input(); 157 kbd_data_write_1(value); 158 } 159 160 static inline void 161 pms_aux_cmd(uint8_t value) 162 { 163 164 kbd_flush_input(); 165 kbd_cmd_write_1(value); 166 } 167 168 static inline void 169 pms_pit_cmd(uint8_t value) 170 { 171 172 kbd_flush_input(); 173 kbd_cmd_write_1(0x60); 174 kbd_flush_input(); 175 kbd_data_write_1(value); 176 } 177 178 int opms_common_match(bus_space_tag_t kbd_iot, struct pccons_config *config) 179 { 180 uint8_t x; 181 182 kbd_context_init(kbd_iot, config); 183 184 pms_dev_cmd(KBC_RESET); 185 pms_aux_cmd(PMS_MAGIC_1); 186 delay(10000); 187 x = kbd_data_read_1(); 188 pms_pit_cmd(PMS_INT_DISABLE); 189 if (x & 0x04) 190 return 0; 191 192 return 1; 193 } 194 195 void 196 opms_common_attach(struct opms_softc *sc, bus_space_tag_t opms_iot, 197 struct pccons_config *config) 198 { 199 200 kbd_context_init(opms_iot, config); 201 202 /* Other initialization was done by opmsprobe. */ 203 sc->sc_state = 0; 204 } 205 206 int 207 opmsopen(dev_t dev, int flag, int mode, struct lwp *l) 208 { 209 int unit = PMSUNIT(dev); 210 struct opms_softc *sc; 211 212 if (unit >= opms_cd.cd_ndevs) 213 return ENXIO; 214 sc = opms_cd.cd_devs[unit]; 215 if (!sc) 216 return ENXIO; 217 218 if (sc->sc_state & PMS_OPEN) 219 return EBUSY; 220 221 if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1) 222 return ENOMEM; 223 224 sc->sc_state |= PMS_OPEN; 225 sc->sc_status = 0; 226 sc->sc_x = sc->sc_y = 0; 227 228 /* Enable interrupts. */ 229 pms_dev_cmd(PMS_DEV_ENABLE); 230 pms_aux_cmd(PMS_AUX_ENABLE); 231 pms_dev_cmd(PMS_SET_RES); 232 pms_dev_cmd(3); /* 8 counts/mm */ 233 pms_dev_cmd(PMS_SET_SCALE21); 234 #if 0 235 pms_dev_cmd(PMS_SET_SAMPLE); 236 pms_dev_cmd(100); /* 100 samples/sec */ 237 pms_dev_cmd(PMS_SET_STREAM); 238 #endif 239 pms_pit_cmd(PMS_INT_ENABLE); 240 241 return 0; 242 } 243 244 int 245 opmsclose(dev_t dev, int flag, int mode, struct lwp *l) 246 { 247 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 248 249 /* Disable interrupts. */ 250 pms_dev_cmd(PMS_DEV_DISABLE); 251 pms_pit_cmd(PMS_INT_DISABLE); 252 pms_aux_cmd(PMS_AUX_DISABLE); 253 254 sc->sc_state &= ~PMS_OPEN; 255 256 clfree(&sc->sc_q); 257 258 return 0; 259 } 260 261 int 262 opmsread(dev_t dev, struct uio *uio, int flag) 263 { 264 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 265 int s; 266 int error = 0; 267 size_t length; 268 u_char buffer[PMS_CHUNK]; 269 270 /* Block until mouse activity occurred. */ 271 272 s = spltty(); 273 while (sc->sc_q.c_cc == 0) { 274 if (flag & IO_NDELAY) { 275 splx(s); 276 return EWOULDBLOCK; 277 } 278 sc->sc_state |= PMS_ASLP; 279 error = tsleep((void *)sc, PZERO | PCATCH, "pmsrea", 0); 280 if (error) { 281 sc->sc_state &= ~PMS_ASLP; 282 splx(s); 283 return error; 284 } 285 } 286 splx(s); 287 288 /* Transfer as many chunks as possible. */ 289 290 while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0) { 291 length = min(sc->sc_q.c_cc, uio->uio_resid); 292 if (length > sizeof(buffer)) 293 length = sizeof(buffer); 294 295 /* Remove a small chunk from the input queue. */ 296 (void) q_to_b(&sc->sc_q, buffer, length); 297 298 /* Copy the data to the user process. */ 299 error = uiomove(buffer, length, uio); 300 if (error) 301 break; 302 } 303 304 return error; 305 } 306 307 int 308 opmsioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 309 { 310 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 311 struct mouseinfo info; 312 int s; 313 int error; 314 315 switch (cmd) { 316 case MOUSEIOCREAD: 317 s = spltty(); 318 319 info.status = sc->sc_status; 320 if (sc->sc_x || sc->sc_y) 321 info.status |= MOVEMENT; 322 323 if (sc->sc_x > 127) 324 info.xmotion = 127; 325 else if (sc->sc_x < -127) 326 /* Bounding at -127 avoids a bug in XFree86. */ 327 info.xmotion = -127; 328 else 329 info.xmotion = sc->sc_x; 330 331 if (sc->sc_y > 127) 332 info.ymotion = 127; 333 else if (sc->sc_y < -127) 334 info.ymotion = -127; 335 else 336 info.ymotion = sc->sc_y; 337 338 /* Reset historical information. */ 339 sc->sc_x = sc->sc_y = 0; 340 sc->sc_status &= ~BUTCHNGMASK; 341 ndflush(&sc->sc_q, sc->sc_q.c_cc); 342 343 splx(s); 344 error = copyout(&info, addr, sizeof(struct mouseinfo)); 345 break; 346 default: 347 error = EINVAL; 348 break; 349 } 350 351 return error; 352 } 353 354 /* Masks for the first byte of a packet */ 355 #define PS2LBUTMASK 0x01 356 #define PS2RBUTMASK 0x02 357 #define PS2MBUTMASK 0x04 358 359 int 360 opmsintr(void *arg) 361 { 362 struct opms_softc *sc = arg; 363 static int state = 0; 364 static u_char buttons; 365 u_char changed; 366 static char dx, dy; 367 u_char buffer[5]; 368 369 if ((sc->sc_state & PMS_OPEN) == 0) { 370 /* Interrupts are not expected. Discard the byte. */ 371 kbd_flush_input(); 372 return 0; 373 } 374 375 switch (state) { 376 377 case 0: 378 buttons = kbd_data_read_1(); 379 if ((buttons & 0xc0) == 0) 380 ++state; 381 break; 382 383 case 1: 384 dx = kbd_data_read_1(); 385 /* Bounding at -127 avoids a bug in XFree86. */ 386 dx = (dx == -128) ? -127 : dx; 387 ++state; 388 break; 389 390 case 2: 391 dy = kbd_data_read_1(); 392 dy = (dy == -128) ? -127 : dy; 393 state = 0; 394 395 buttons = ((buttons & PS2LBUTMASK) << 2) | 396 ((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1); 397 changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3; 398 sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) | 399 changed; 400 401 if (dx || dy || changed) { 402 /* Update accumulated movements. */ 403 sc->sc_x += dx; 404 sc->sc_y += dy; 405 406 /* Add this event to the queue. */ 407 buffer[0] = 0x80 | (buttons & BUTSTATMASK); 408 if(dx < 0) 409 buffer[0] |= 0x10; 410 buffer[1] = dx & 0x7f; 411 if(dy < 0) 412 buffer[0] |= 0x20; 413 buffer[2] = dy & 0x7f; 414 buffer[3] = buffer[4] = 0; 415 (void) b_to_q(buffer, sizeof buffer, &sc->sc_q); 416 417 if (sc->sc_state & PMS_ASLP) { 418 sc->sc_state &= ~PMS_ASLP; 419 wakeup((void *)sc); 420 } 421 selnotify(&sc->sc_rsel, 0); 422 } 423 424 break; 425 } 426 return -1; 427 } 428 429 int 430 opmspoll(dev_t dev, int events, struct lwp *l) 431 { 432 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 433 int revents = 0; 434 int s = spltty(); 435 436 if (events & (POLLIN | POLLRDNORM)) { 437 if (sc->sc_q.c_cc > 0) 438 revents |= events & (POLLIN | POLLRDNORM); 439 else 440 selrecord(l, &sc->sc_rsel); 441 } 442 443 splx(s); 444 return revents; 445 } 446 447 static void 448 filt_opmsrdetach(struct knote *kn) 449 { 450 struct opms_softc *sc = kn->kn_hook; 451 int s; 452 453 s = spltty(); 454 SLIST_REMOVE(&sc->sc_rsel.sel_klist, kn, knote, kn_selnext); 455 splx(s); 456 } 457 458 static int 459 filt_opmsread(struct knote *kn, long hint) 460 { 461 struct opms_softc *sc = kn->kn_hook; 462 463 kn->kn_data = sc->sc_q.c_cc; 464 return kn->kn_data > 0; 465 } 466 467 static const struct filterops opmsread_filtops = 468 { 1, NULL, filt_opmsrdetach, filt_opmsread }; 469 470 int 471 opmskqfilter(dev_t dev, struct knote *kn) 472 { 473 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 474 struct klist *klist; 475 int s; 476 477 switch (kn->kn_filter) { 478 case EVFILT_READ: 479 klist = &sc->sc_rsel.sel_klist; 480 kn->kn_fop = &opmsread_filtops; 481 break; 482 483 default: 484 return 1; 485 } 486 487 kn->kn_hook = sc; 488 489 s = spltty(); 490 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 491 splx(s); 492 493 return 0; 494 } 495
Indexes created Tue Sep 30 11:09:46 GMT 2025