opms.c revision 1.1.4.3
1 /* $NetBSD: opms.c,v 1.1.4.3 2002/06/16 20:11:33 jdolecek 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) 1993, 1994, 1995 Charles M. Hannum. All rights reserved. 7 * Copyright (c) 1990 The Regents of the University of California. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * William Jolitz and Don Ahn. 12 * 13 * Copyright (c) 1994 Charles M. Hannum. 14 * Copyright (c) 1992, 1993 Erik Forsberg. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * @(#)pccons.c 5.11 (Berkeley) 5/21/91 45 */ 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/vnode.h> 50 #include <sys/poll.h> 51 #include <sys/tty.h> 52 #include <sys/device.h> 53 #include <sys/proc.h> 54 #include <sys/conf.h> 55 56 #include <machine/bus.h> 57 #include <machine/kbdreg.h> 58 #include <machine/mouse.h> 59 60 #include <arc/dev/pcconsvar.h> 61 #include <arc/dev/opmsvar.h> 62 63 #define PMSUNIT(dev) (minor(dev)) 64 65 /* status bits */ 66 #define PMS_OBUF_FULL 0x01 67 #define PMS_IBUF_FULL 0x02 68 69 /* controller commands */ 70 #define PMS_INT_ENABLE 0x47 /* enable controller interrupts */ 71 #define PMS_INT_DISABLE 0x65 /* disable controller interrupts */ 72 #define PMS_AUX_ENABLE 0xa7 /* enable auxiliary port */ 73 #define PMS_AUX_DISABLE 0xa8 /* disable auxiliary port */ 74 #define PMS_MAGIC_1 0xa9 /* XXX */ 75 76 #define PMS_8042_CMD 0x65 77 78 /* mouse commands */ 79 #define PMS_SET_SCALE11 0xe6 /* set scaling 1:1 */ 80 #define PMS_SET_SCALE21 0xe7 /* set scaling 2:1 */ 81 #define PMS_SET_RES 0xe8 /* set resolution */ 82 #define PMS_GET_SCALE 0xe9 /* get scaling factor */ 83 #define PMS_SET_STREAM 0xea /* set streaming mode */ 84 #define PMS_SET_SAMPLE 0xf3 /* set sampling rate */ 85 #define PMS_DEV_ENABLE 0xf4 /* mouse on */ 86 #define PMS_DEV_DISABLE 0xf5 /* mouse off */ 87 #define PMS_RESET 0xff /* reset */ 88 89 #define PMS_CHUNK 128 /* chunk size for read */ 90 #define PMS_BSIZE 1020 /* buffer size */ 91 92 #define FLUSHQ(q) { if((q)->c_cc) ndflush(q, (q)->c_cc); } 93 94 extern struct cfdriver opms_cd; 95 96 cdev_decl(opms); 97 98 #define LMSUNIT(dev) (minor(dev)) 99 100 static __inline void pms_dev_cmd __P((u_char)); 101 static __inline void pms_aux_cmd __P((u_char)); 102 static __inline void pms_pit_cmd __P((u_char)); 103 104 static __inline void 105 pms_dev_cmd(value) 106 u_char value; 107 { 108 kbd_flush_input(); 109 kbd_cmd_write_1(0xd4); 110 kbd_flush_input(); 111 kbd_data_write_1(value); 112 } 113 114 static __inline void 115 pms_aux_cmd(value) 116 u_char value; 117 { 118 kbd_flush_input(); 119 kbd_cmd_write_1(value); 120 } 121 122 static __inline void 123 pms_pit_cmd(value) 124 u_char value; 125 { 126 kbd_flush_input(); 127 kbd_cmd_write_1(0x60); 128 kbd_flush_input(); 129 kbd_data_write_1(value); 130 } 131 132 int opms_common_match(kbd_iot, config) 133 bus_space_tag_t kbd_iot; 134 struct pccons_config *config; 135 { 136 u_char x; 137 138 kbd_context_init(kbd_iot, config); 139 140 pms_dev_cmd(KBC_RESET); 141 pms_aux_cmd(PMS_MAGIC_1); 142 delay(10000); 143 x = kbd_data_read_1(); 144 pms_pit_cmd(PMS_INT_DISABLE); 145 if (x & 0x04) 146 return 0; 147 148 return 1; 149 } 150 151 void 152 opms_common_attach(sc, opms_iot, config) 153 struct opms_softc *sc; 154 bus_space_tag_t opms_iot; 155 struct pccons_config *config; 156 { 157 kbd_context_init(opms_iot, config); 158 159 /* Other initialization was done by opmsprobe. */ 160 sc->sc_state = 0; 161 } 162 163 int 164 opmsopen(dev, flag, mode, p) 165 dev_t dev; 166 int flag; 167 int mode; 168 struct proc *p; 169 { 170 int unit = PMSUNIT(dev); 171 struct opms_softc *sc; 172 173 if (unit >= opms_cd.cd_ndevs) 174 return ENXIO; 175 sc = opms_cd.cd_devs[unit]; 176 if (!sc) 177 return ENXIO; 178 179 if (sc->sc_state & PMS_OPEN) 180 return EBUSY; 181 182 if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1) 183 return ENOMEM; 184 185 sc->sc_state |= PMS_OPEN; 186 sc->sc_status = 0; 187 sc->sc_x = sc->sc_y = 0; 188 189 /* Enable interrupts. */ 190 pms_dev_cmd(PMS_DEV_ENABLE); 191 pms_aux_cmd(PMS_AUX_ENABLE); 192 pms_dev_cmd(PMS_SET_RES); 193 pms_dev_cmd(3); /* 8 counts/mm */ 194 pms_dev_cmd(PMS_SET_SCALE21); 195 #if 0 196 pms_dev_cmd(PMS_SET_SAMPLE); 197 pms_dev_cmd(100); /* 100 samples/sec */ 198 pms_dev_cmd(PMS_SET_STREAM); 199 #endif 200 pms_pit_cmd(PMS_INT_ENABLE); 201 202 return 0; 203 } 204 205 int 206 opmsclose(dev, flag, mode, p) 207 dev_t dev; 208 int flag; 209 int mode; 210 struct proc *p; 211 { 212 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 213 214 /* Disable interrupts. */ 215 pms_dev_cmd(PMS_DEV_DISABLE); 216 pms_pit_cmd(PMS_INT_DISABLE); 217 pms_aux_cmd(PMS_AUX_DISABLE); 218 219 sc->sc_state &= ~PMS_OPEN; 220 221 clfree(&sc->sc_q); 222 223 return 0; 224 } 225 226 int 227 opmsread(dev, uio, flag) 228 dev_t dev; 229 struct uio *uio; 230 int flag; 231 { 232 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 233 int s; 234 int error = 0; 235 size_t length; 236 u_char buffer[PMS_CHUNK]; 237 238 /* Block until mouse activity occurred. */ 239 240 s = spltty(); 241 while (sc->sc_q.c_cc == 0) { 242 if (flag & IO_NDELAY) { 243 splx(s); 244 return EWOULDBLOCK; 245 } 246 sc->sc_state |= PMS_ASLP; 247 error = tsleep((caddr_t)sc, PZERO | PCATCH, "pmsrea", 0); 248 if (error) { 249 sc->sc_state &= ~PMS_ASLP; 250 splx(s); 251 return error; 252 } 253 } 254 splx(s); 255 256 /* Transfer as many chunks as possible. */ 257 258 while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0) { 259 length = min(sc->sc_q.c_cc, uio->uio_resid); 260 if (length > sizeof(buffer)) 261 length = sizeof(buffer); 262 263 /* Remove a small chunk from the input queue. */ 264 (void) q_to_b(&sc->sc_q, buffer, length); 265 266 /* Copy the data to the user process. */ 267 error = uiomove(buffer, length, uio); 268 if (error) 269 break; 270 } 271 272 return error; 273 } 274 275 int 276 opmsioctl(dev, cmd, addr, flag, p) 277 dev_t dev; 278 u_long cmd; 279 caddr_t addr; 280 int flag; 281 struct proc *p; 282 { 283 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 284 struct mouseinfo info; 285 int s; 286 int error; 287 288 switch (cmd) { 289 case MOUSEIOCREAD: 290 s = spltty(); 291 292 info.status = sc->sc_status; 293 if (sc->sc_x || sc->sc_y) 294 info.status |= MOVEMENT; 295 296 if (sc->sc_x > 127) 297 info.xmotion = 127; 298 else if (sc->sc_x < -127) 299 /* Bounding at -127 avoids a bug in XFree86. */ 300 info.xmotion = -127; 301 else 302 info.xmotion = sc->sc_x; 303 304 if (sc->sc_y > 127) 305 info.ymotion = 127; 306 else if (sc->sc_y < -127) 307 info.ymotion = -127; 308 else 309 info.ymotion = sc->sc_y; 310 311 /* Reset historical information. */ 312 sc->sc_x = sc->sc_y = 0; 313 sc->sc_status &= ~BUTCHNGMASK; 314 ndflush(&sc->sc_q, sc->sc_q.c_cc); 315 316 splx(s); 317 error = copyout(&info, addr, sizeof(struct mouseinfo)); 318 break; 319 default: 320 error = EINVAL; 321 break; 322 } 323 324 return error; 325 } 326 327 /* Masks for the first byte of a packet */ 328 #define PS2LBUTMASK 0x01 329 #define PS2RBUTMASK 0x02 330 #define PS2MBUTMASK 0x04 331 332 int 333 opmsintr(arg) 334 void *arg; 335 { 336 struct opms_softc *sc = arg; 337 static int state = 0; 338 static u_char buttons; 339 u_char changed; 340 static char dx, dy; 341 u_char buffer[5]; 342 343 if ((sc->sc_state & PMS_OPEN) == 0) { 344 /* Interrupts are not expected. Discard the byte. */ 345 kbd_flush_input(); 346 return 0; 347 } 348 349 switch (state) { 350 351 case 0: 352 buttons = kbd_data_read_1(); 353 if ((buttons & 0xc0) == 0) 354 ++state; 355 break; 356 357 case 1: 358 dx = kbd_data_read_1(); 359 /* Bounding at -127 avoids a bug in XFree86. */ 360 dx = (dx == -128) ? -127 : dx; 361 ++state; 362 break; 363 364 case 2: 365 dy = kbd_data_read_1(); 366 dy = (dy == -128) ? -127 : dy; 367 state = 0; 368 369 buttons = ((buttons & PS2LBUTMASK) << 2) | 370 ((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1); 371 changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3; 372 sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) | changed; 373 374 if (dx || dy || changed) { 375 /* Update accumulated movements. */ 376 sc->sc_x += dx; 377 sc->sc_y += dy; 378 379 /* Add this event to the queue. */ 380 buffer[0] = 0x80 | (buttons & BUTSTATMASK); 381 if(dx < 0) 382 buffer[0] |= 0x10; 383 buffer[1] = dx & 0x7f; 384 if(dy < 0) 385 buffer[0] |= 0x20; 386 buffer[2] = dy & 0x7f; 387 buffer[3] = buffer[4] = 0; 388 (void) b_to_q(buffer, sizeof buffer, &sc->sc_q); 389 390 if (sc->sc_state & PMS_ASLP) { 391 sc->sc_state &= ~PMS_ASLP; 392 wakeup((caddr_t)sc); 393 } 394 selnotify(&sc->sc_rsel, 0); 395 } 396 397 break; 398 } 399 return -1; 400 } 401 402 int 403 opmspoll(dev, events, p) 404 dev_t dev; 405 int events; 406 struct proc *p; 407 { 408 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 409 int revents = 0; 410 int s = spltty(); 411 412 if (events & (POLLIN | POLLRDNORM)) { 413 if (sc->sc_q.c_cc > 0) 414 revents |= events & (POLLIN | POLLRDNORM); 415 else 416 selrecord(p, &sc->sc_rsel); 417 } 418 419 splx(s); 420 return (revents); 421 } 422 423 static void 424 filt_opmsrdetach(struct knote *kn) 425 { 426 struct opms_softc *sc = (void *) kn->kn_hook; 427 int s; 428 429 s = spltty(); 430 SLIST_REMOVE(&sc->sc_rsel.si_klist, kn, knote, kn_selnext); 431 splx(s); 432 } 433 434 static int 435 filt_opmsread(struct knote *kn, long hint) 436 { 437 struct opms_softc *sc = (void *) kn->kn_hook; 438 439 kn->kn_data = sc->sc_q.c_cc; 440 return (kn->kn_data > 0); 441 } 442 443 static const struct filterops opmsread_filtops = 444 { 1, NULL, filt_opmsrdetach, filt_opmsread }; 445 446 int 447 opmskqfilter(dev_t dev, struct knote *kn) 448 { 449 struct opms_softc *sc = opms_cd.cd_devs[LMSUNIT(dev)]; 450 struct klist *klist; 451 int s; 452 453 switch (kn->kn_filter) { 454 case EVFILT_READ: 455 klist = &sc->sc_rsel.si_klist; 456 kn->kn_fop = &opmsread_filtops; 457 break; 458 459 default: 460 return (1); 461 } 462 463 kn->kn_hook = (void *) sc; 464 465 s = spltty(); 466 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 467 splx(s); 468 469 return (0); 470 } 471
Indexes created Tue Sep 30 11:09:46 GMT 2025