opms.c revision 1.16.40.1
1 /* $NetBSD: opms.c,v 1.16.40.1 2008/04/03 12:42:11 mjf 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 1.16.40.1 2008/04/03 12:42:11 mjf 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 selinit(&sc->sc_rsel); 202 203 /* Other initialization was done by opmsprobe. */ 204 sc->sc_state = 0; 205 } 206 207 int 208 opmsopen(dev_t dev, int flag, int mode, struct lwp *l) 209 { 210 int unit = PMSUNIT(dev); 211 struct opms_softc *sc; 212 213 if (unit >= opms_cd.cd_ndevs) 214 return ENXIO; 215 sc = opms_cd.cd_devs[unit]; 216 if (!sc) 217 return ENXIO; 218 219 if (sc->sc_state & PMS_OPEN) 220 return EBUSY; 221 222 if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1) 223 return ENOMEM; 224 225 sc->sc_state |= PMS_OPEN; 226 sc->sc_status = 0; 227 sc->sc_x = sc->sc_y = 0; 228 229 /* Enable interrupts. */ 230 pms_dev_cmd(PMS_DEV_ENABLE); 231 pms_aux_cmd(PMS_AUX_ENABLE); 232 pms_dev_cmd(PMS_SET_RES); 233 pms_dev_cmd(3); /* 8 counts/mm */ 234 pms_dev_cmd(PMS_SET_SCALE21); 235 #if 0 236 pms_dev_cmd(PMS_SET_SAMPLE); 237 pms_dev_cmd(100); /* 100 samples/sec */ 238 pms_dev_cmd(PMS_SET_STREAM); 239 #endif 240 pms_pit_cmd(PMS_INT_ENABLE); 241 242 return 0; 243 } 244 245 int 246 opmsclose(dev_t dev, int flag, int mode, struct lwp *l) 247 { 248 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 249 250 /* Disable interrupts. */ 251 pms_dev_cmd(PMS_DEV_DISABLE); 252 pms_pit_cmd(PMS_INT_DISABLE); 253 pms_aux_cmd(PMS_AUX_DISABLE); 254 255 sc->sc_state &= ~PMS_OPEN; 256 257 clfree(&sc->sc_q); 258 259 return 0; 260 } 261 262 int 263 opmsread(dev_t dev, struct uio *uio, int flag) 264 { 265 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 266 int s; 267 int error = 0; 268 size_t length; 269 u_char buffer[PMS_CHUNK]; 270 271 /* Block until mouse activity occurred. */ 272 273 s = spltty(); 274 while (sc->sc_q.c_cc == 0) { 275 if (flag & IO_NDELAY) { 276 splx(s); 277 return EWOULDBLOCK; 278 } 279 sc->sc_state |= PMS_ASLP; 280 error = tsleep((void *)sc, PZERO | PCATCH, "pmsrea", 0); 281 if (error) { 282 sc->sc_state &= ~PMS_ASLP; 283 splx(s); 284 return error; 285 } 286 } 287 splx(s); 288 289 /* Transfer as many chunks as possible. */ 290 291 while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0) { 292 length = min(sc->sc_q.c_cc, uio->uio_resid); 293 if (length > sizeof(buffer)) 294 length = sizeof(buffer); 295 296 /* Remove a small chunk from the input queue. */ 297 (void) q_to_b(&sc->sc_q, buffer, length); 298 299 /* Copy the data to the user process. */ 300 error = uiomove(buffer, length, uio); 301 if (error) 302 break; 303 } 304 305 return error; 306 } 307 308 int 309 opmsioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 310 { 311 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 312 struct mouseinfo info; 313 int s; 314 int error; 315 316 switch (cmd) { 317 case MOUSEIOCREAD: 318 s = spltty(); 319 320 info.status = sc->sc_status; 321 if (sc->sc_x || sc->sc_y) 322 info.status |= MOVEMENT; 323 324 if (sc->sc_x > 127) 325 info.xmotion = 127; 326 else if (sc->sc_x < -127) 327 /* Bounding at -127 avoids a bug in XFree86. */ 328 info.xmotion = -127; 329 else 330 info.xmotion = sc->sc_x; 331 332 if (sc->sc_y > 127) 333 info.ymotion = 127; 334 else if (sc->sc_y < -127) 335 info.ymotion = -127; 336 else 337 info.ymotion = sc->sc_y; 338 339 /* Reset historical information. */ 340 sc->sc_x = sc->sc_y = 0; 341 sc->sc_status &= ~BUTCHNGMASK; 342 ndflush(&sc->sc_q, sc->sc_q.c_cc); 343 344 splx(s); 345 error = copyout(&info, addr, sizeof(struct mouseinfo)); 346 break; 347 default: 348 error = EINVAL; 349 break; 350 } 351 352 return error; 353 } 354 355 /* Masks for the first byte of a packet */ 356 #define PS2LBUTMASK 0x01 357 #define PS2RBUTMASK 0x02 358 #define PS2MBUTMASK 0x04 359 360 int 361 opmsintr(void *arg) 362 { 363 struct opms_softc *sc = arg; 364 static int state = 0; 365 static u_char buttons; 366 u_char changed; 367 static char dx, dy; 368 u_char buffer[5]; 369 370 if ((sc->sc_state & PMS_OPEN) == 0) { 371 /* Interrupts are not expected. Discard the byte. */ 372 kbd_flush_input(); 373 return 0; 374 } 375 376 switch (state) { 377 378 case 0: 379 buttons = kbd_data_read_1(); 380 if ((buttons & 0xc0) == 0) 381 ++state; 382 break; 383 384 case 1: 385 dx = kbd_data_read_1(); 386 /* Bounding at -127 avoids a bug in XFree86. */ 387 dx = (dx == -128) ? -127 : dx; 388 ++state; 389 break; 390 391 case 2: 392 dy = kbd_data_read_1(); 393 dy = (dy == -128) ? -127 : dy; 394 state = 0; 395 396 buttons = ((buttons & PS2LBUTMASK) << 2) | 397 ((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1); 398 changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3; 399 sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) | 400 changed; 401 402 if (dx || dy || changed) { 403 /* Update accumulated movements. */ 404 sc->sc_x += dx; 405 sc->sc_y += dy; 406 407 /* Add this event to the queue. */ 408 buffer[0] = 0x80 | (buttons & BUTSTATMASK); 409 if(dx < 0) 410 buffer[0] |= 0x10; 411 buffer[1] = dx & 0x7f; 412 if(dy < 0) 413 buffer[0] |= 0x20; 414 buffer[2] = dy & 0x7f; 415 buffer[3] = buffer[4] = 0; 416 (void) b_to_q(buffer, sizeof buffer, &sc->sc_q); 417 418 if (sc->sc_state & PMS_ASLP) { 419 sc->sc_state &= ~PMS_ASLP; 420 wakeup((void *)sc); 421 } 422 selnotify(&sc->sc_rsel, 0, 0); 423 } 424 425 break; 426 } 427 return -1; 428 } 429 430 int 431 opmspoll(dev_t dev, int events, struct lwp *l) 432 { 433 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 434 int revents = 0; 435 int s = spltty(); 436 437 if (events & (POLLIN | POLLRDNORM)) { 438 if (sc->sc_q.c_cc > 0) 439 revents |= events & (POLLIN | POLLRDNORM); 440 else 441 selrecord(l, &sc->sc_rsel); 442 } 443 444 splx(s); 445 return revents; 446 } 447 448 static void 449 filt_opmsrdetach(struct knote *kn) 450 { 451 struct opms_softc *sc = kn->kn_hook; 452 int s; 453 454 s = spltty(); 455 SLIST_REMOVE(&sc->sc_rsel.sel_klist, kn, knote, kn_selnext); 456 splx(s); 457 } 458 459 static int 460 filt_opmsread(struct knote *kn, long hint) 461 { 462 struct opms_softc *sc = kn->kn_hook; 463 464 kn->kn_data = sc->sc_q.c_cc; 465 return kn->kn_data > 0; 466 } 467 468 static const struct filterops opmsread_filtops = 469 { 1, NULL, filt_opmsrdetach, filt_opmsread }; 470 471 int 472 opmskqfilter(dev_t dev, struct knote *kn) 473 { 474 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 475 struct klist *klist; 476 int s; 477 478 switch (kn->kn_filter) { 479 case EVFILT_READ: 480 klist = &sc->sc_rsel.sel_klist; 481 kn->kn_fop = &opmsread_filtops; 482 break; 483 484 default: 485 return 1; 486 } 487 488 kn->kn_hook = sc; 489 490 s = spltty(); 491 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 492 splx(s); 493 494 return 0; 495 } 496
Indexes created Tue Sep 30 11:09:46 GMT 2025