opms.c revision 1.17.4.1
1 /* $NetBSD: opms.c,v 1.17.4.1 2009/05/04 08:10:37 yamt 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 1.17.4.1 2009/05/04 08:10:37 yamt 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 struct opms_softc *sc; 211 212 sc = device_lookup_private(&opms_cd, PMSUNIT(dev)); 213 if (!sc) 214 return ENXIO; 215 216 if (sc->sc_state & PMS_OPEN) 217 return EBUSY; 218 219 if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1) 220 return ENOMEM; 221 222 sc->sc_state |= PMS_OPEN; 223 sc->sc_status = 0; 224 sc->sc_x = sc->sc_y = 0; 225 226 /* Enable interrupts. */ 227 pms_dev_cmd(PMS_DEV_ENABLE); 228 pms_aux_cmd(PMS_AUX_ENABLE); 229 pms_dev_cmd(PMS_SET_RES); 230 pms_dev_cmd(3); /* 8 counts/mm */ 231 pms_dev_cmd(PMS_SET_SCALE21); 232 #if 0 233 pms_dev_cmd(PMS_SET_SAMPLE); 234 pms_dev_cmd(100); /* 100 samples/sec */ 235 pms_dev_cmd(PMS_SET_STREAM); 236 #endif 237 pms_pit_cmd(PMS_INT_ENABLE); 238 239 return 0; 240 } 241 242 int 243 opmsclose(dev_t dev, int flag, int mode, struct lwp *l) 244 { 245 struct opms_softc *sc = device_lookup_private(&opms_cd, PMSUNIT(dev)); 246 247 /* Disable interrupts. */ 248 pms_dev_cmd(PMS_DEV_DISABLE); 249 pms_pit_cmd(PMS_INT_DISABLE); 250 pms_aux_cmd(PMS_AUX_DISABLE); 251 252 sc->sc_state &= ~PMS_OPEN; 253 254 clfree(&sc->sc_q); 255 256 return 0; 257 } 258 259 int 260 opmsread(dev_t dev, struct uio *uio, int flag) 261 { 262 struct opms_softc *sc = device_lookup_private(&opms_cd, PMSUNIT(dev)); 263 int s; 264 int error = 0; 265 size_t length; 266 u_char buffer[PMS_CHUNK]; 267 268 /* Block until mouse activity occurred. */ 269 270 s = spltty(); 271 while (sc->sc_q.c_cc == 0) { 272 if (flag & IO_NDELAY) { 273 splx(s); 274 return EWOULDBLOCK; 275 } 276 sc->sc_state |= PMS_ASLP; 277 error = tsleep((void *)sc, PZERO | PCATCH, "pmsrea", 0); 278 if (error) { 279 sc->sc_state &= ~PMS_ASLP; 280 splx(s); 281 return error; 282 } 283 } 284 splx(s); 285 286 /* Transfer as many chunks as possible. */ 287 288 while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0) { 289 length = min(sc->sc_q.c_cc, uio->uio_resid); 290 if (length > sizeof(buffer)) 291 length = sizeof(buffer); 292 293 /* Remove a small chunk from the input queue. */ 294 (void) q_to_b(&sc->sc_q, buffer, length); 295 296 /* Copy the data to the user process. */ 297 error = uiomove(buffer, length, uio); 298 if (error) 299 break; 300 } 301 302 return error; 303 } 304 305 int 306 opmsioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 307 { 308 struct opms_softc *sc = device_lookup_private(&opms_cd, PMSUNIT(dev)); 309 struct mouseinfo info; 310 int s; 311 int error; 312 313 switch (cmd) { 314 case MOUSEIOCREAD: 315 s = spltty(); 316 317 info.status = sc->sc_status; 318 if (sc->sc_x || sc->sc_y) 319 info.status |= MOVEMENT; 320 321 if (sc->sc_x > 127) 322 info.xmotion = 127; 323 else if (sc->sc_x < -127) 324 /* Bounding at -127 avoids a bug in XFree86. */ 325 info.xmotion = -127; 326 else 327 info.xmotion = sc->sc_x; 328 329 if (sc->sc_y > 127) 330 info.ymotion = 127; 331 else if (sc->sc_y < -127) 332 info.ymotion = -127; 333 else 334 info.ymotion = sc->sc_y; 335 336 /* Reset historical information. */ 337 sc->sc_x = sc->sc_y = 0; 338 sc->sc_status &= ~BUTCHNGMASK; 339 ndflush(&sc->sc_q, sc->sc_q.c_cc); 340 341 splx(s); 342 error = copyout(&info, addr, sizeof(struct mouseinfo)); 343 break; 344 default: 345 error = EINVAL; 346 break; 347 } 348 349 return error; 350 } 351 352 /* Masks for the first byte of a packet */ 353 #define PS2LBUTMASK 0x01 354 #define PS2RBUTMASK 0x02 355 #define PS2MBUTMASK 0x04 356 357 int 358 opmsintr(void *arg) 359 { 360 struct opms_softc *sc = arg; 361 static int state = 0; 362 static u_char buttons; 363 u_char changed; 364 static char dx, dy; 365 u_char buffer[5]; 366 367 if ((sc->sc_state & PMS_OPEN) == 0) { 368 /* Interrupts are not expected. Discard the byte. */ 369 kbd_flush_input(); 370 return 0; 371 } 372 373 switch (state) { 374 375 case 0: 376 buttons = kbd_data_read_1(); 377 if ((buttons & 0xc0) == 0) 378 ++state; 379 break; 380 381 case 1: 382 dx = kbd_data_read_1(); 383 /* Bounding at -127 avoids a bug in XFree86. */ 384 dx = (dx == -128) ? -127 : dx; 385 ++state; 386 break; 387 388 case 2: 389 dy = kbd_data_read_1(); 390 dy = (dy == -128) ? -127 : dy; 391 state = 0; 392 393 buttons = ((buttons & PS2LBUTMASK) << 2) | 394 ((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1); 395 changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3; 396 sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) | 397 changed; 398 399 if (dx || dy || changed) { 400 /* Update accumulated movements. */ 401 sc->sc_x += dx; 402 sc->sc_y += dy; 403 404 /* Add this event to the queue. */ 405 buffer[0] = 0x80 | (buttons & BUTSTATMASK); 406 if(dx < 0) 407 buffer[0] |= 0x10; 408 buffer[1] = dx & 0x7f; 409 if(dy < 0) 410 buffer[0] |= 0x20; 411 buffer[2] = dy & 0x7f; 412 buffer[3] = buffer[4] = 0; 413 (void) b_to_q(buffer, sizeof buffer, &sc->sc_q); 414 415 if (sc->sc_state & PMS_ASLP) { 416 sc->sc_state &= ~PMS_ASLP; 417 wakeup((void *)sc); 418 } 419 selnotify(&sc->sc_rsel, 0, 0); 420 } 421 422 break; 423 } 424 return -1; 425 } 426 427 int 428 opmspoll(dev_t dev, int events, struct lwp *l) 429 { 430 struct opms_softc *sc = device_lookup_private(&opms_cd, PMSUNIT(dev)); 431 int revents = 0; 432 int s = spltty(); 433 434 if (events & (POLLIN | POLLRDNORM)) { 435 if (sc->sc_q.c_cc > 0) 436 revents |= events & (POLLIN | POLLRDNORM); 437 else 438 selrecord(l, &sc->sc_rsel); 439 } 440 441 splx(s); 442 return revents; 443 } 444 445 static void 446 filt_opmsrdetach(struct knote *kn) 447 { 448 struct opms_softc *sc = kn->kn_hook; 449 int s; 450 451 s = spltty(); 452 SLIST_REMOVE(&sc->sc_rsel.sel_klist, kn, knote, kn_selnext); 453 splx(s); 454 } 455 456 static int 457 filt_opmsread(struct knote *kn, long hint) 458 { 459 struct opms_softc *sc = kn->kn_hook; 460 461 kn->kn_data = sc->sc_q.c_cc; 462 return kn->kn_data > 0; 463 } 464 465 static const struct filterops opmsread_filtops = 466 { 1, NULL, filt_opmsrdetach, filt_opmsread }; 467 468 int 469 opmskqfilter(dev_t dev, struct knote *kn) 470 { 471 struct opms_softc *sc = device_lookup_private(&opms_cd, PMSUNIT(dev)); 472 struct klist *klist; 473 int s; 474 475 switch (kn->kn_filter) { 476 case EVFILT_READ: 477 klist = &sc->sc_rsel.sel_klist; 478 kn->kn_fop = &opmsread_filtops; 479 break; 480 481 default: 482 return 1; 483 } 484 485 kn->kn_hook = sc; 486 487 s = spltty(); 488 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 489 splx(s); 490 491 return 0; 492 } 493
Indexes created Tue Sep 30 11:09:46 GMT 2025