opms.c revision 1.1.4.2
1 /* $NetBSD: opms.c,v 1.1.4.2 2002/01/10 19:37:42 thorpej 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 55 #include <machine/bus.h> 56 #include <machine/kbdreg.h> 57 #include <machine/mouse.h> 58 59 #include <arc/dev/pcconsvar.h> 60 #include <arc/dev/opmsvar.h> 61 62 #define PMSUNIT(dev) (minor(dev)) 63 64 /* status bits */ 65 #define PMS_OBUF_FULL 0x01 66 #define PMS_IBUF_FULL 0x02 67 68 /* controller commands */ 69 #define PMS_INT_ENABLE 0x47 /* enable controller interrupts */ 70 #define PMS_INT_DISABLE 0x65 /* disable controller interrupts */ 71 #define PMS_AUX_ENABLE 0xa7 /* enable auxiliary port */ 72 #define PMS_AUX_DISABLE 0xa8 /* disable auxiliary port */ 73 #define PMS_MAGIC_1 0xa9 /* XXX */ 74 75 #define PMS_8042_CMD 0x65 76 77 /* mouse commands */ 78 #define PMS_SET_SCALE11 0xe6 /* set scaling 1:1 */ 79 #define PMS_SET_SCALE21 0xe7 /* set scaling 2:1 */ 80 #define PMS_SET_RES 0xe8 /* set resolution */ 81 #define PMS_GET_SCALE 0xe9 /* get scaling factor */ 82 #define PMS_SET_STREAM 0xea /* set streaming mode */ 83 #define PMS_SET_SAMPLE 0xf3 /* set sampling rate */ 84 #define PMS_DEV_ENABLE 0xf4 /* mouse on */ 85 #define PMS_DEV_DISABLE 0xf5 /* mouse off */ 86 #define PMS_RESET 0xff /* reset */ 87 88 #define PMS_CHUNK 128 /* chunk size for read */ 89 #define PMS_BSIZE 1020 /* buffer size */ 90 91 #define FLUSHQ(q) { if((q)->c_cc) ndflush(q, (q)->c_cc); } 92 93 extern struct cfdriver opms_cd; 94 95 cdev_decl(opms); 96 97 static __inline void pms_dev_cmd __P((u_char)); 98 static __inline void pms_aux_cmd __P((u_char)); 99 static __inline void pms_pit_cmd __P((u_char)); 100 101 static __inline void 102 pms_dev_cmd(value) 103 u_char value; 104 { 105 kbd_flush_input(); 106 kbd_cmd_write_1(0xd4); 107 kbd_flush_input(); 108 kbd_data_write_1(value); 109 } 110 111 static __inline void 112 pms_aux_cmd(value) 113 u_char value; 114 { 115 kbd_flush_input(); 116 kbd_cmd_write_1(value); 117 } 118 119 static __inline void 120 pms_pit_cmd(value) 121 u_char value; 122 { 123 kbd_flush_input(); 124 kbd_cmd_write_1(0x60); 125 kbd_flush_input(); 126 kbd_data_write_1(value); 127 } 128 129 int opms_common_match(kbd_iot, config) 130 bus_space_tag_t kbd_iot; 131 struct pccons_config *config; 132 { 133 u_char x; 134 135 kbd_context_init(kbd_iot, config); 136 137 pms_dev_cmd(KBC_RESET); 138 pms_aux_cmd(PMS_MAGIC_1); 139 delay(10000); 140 x = kbd_data_read_1(); 141 pms_pit_cmd(PMS_INT_DISABLE); 142 if (x & 0x04) 143 return 0; 144 145 return 1; 146 } 147 148 void 149 opms_common_attach(sc, opms_iot, config) 150 struct opms_softc *sc; 151 bus_space_tag_t opms_iot; 152 struct pccons_config *config; 153 { 154 kbd_context_init(opms_iot, config); 155 156 /* Other initialization was done by opmsprobe. */ 157 sc->sc_state = 0; 158 } 159 160 int 161 opmsopen(dev, flag) 162 dev_t dev; 163 int flag; 164 { 165 int unit = PMSUNIT(dev); 166 struct opms_softc *sc; 167 168 if (unit >= opms_cd.cd_ndevs) 169 return ENXIO; 170 sc = opms_cd.cd_devs[unit]; 171 if (!sc) 172 return ENXIO; 173 174 if (sc->sc_state & PMS_OPEN) 175 return EBUSY; 176 177 if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1) 178 return ENOMEM; 179 180 sc->sc_state |= PMS_OPEN; 181 sc->sc_status = 0; 182 sc->sc_x = sc->sc_y = 0; 183 184 /* Enable interrupts. */ 185 pms_dev_cmd(PMS_DEV_ENABLE); 186 pms_aux_cmd(PMS_AUX_ENABLE); 187 pms_dev_cmd(PMS_SET_RES); 188 pms_dev_cmd(3); /* 8 counts/mm */ 189 pms_dev_cmd(PMS_SET_SCALE21); 190 #if 0 191 pms_dev_cmd(PMS_SET_SAMPLE); 192 pms_dev_cmd(100); /* 100 samples/sec */ 193 pms_dev_cmd(PMS_SET_STREAM); 194 #endif 195 pms_pit_cmd(PMS_INT_ENABLE); 196 197 return 0; 198 } 199 200 int 201 opmsclose(dev, flag) 202 dev_t dev; 203 int flag; 204 { 205 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 206 207 /* Disable interrupts. */ 208 pms_dev_cmd(PMS_DEV_DISABLE); 209 pms_pit_cmd(PMS_INT_DISABLE); 210 pms_aux_cmd(PMS_AUX_DISABLE); 211 212 sc->sc_state &= ~PMS_OPEN; 213 214 clfree(&sc->sc_q); 215 216 return 0; 217 } 218 219 int 220 opmsread(dev, uio, flag) 221 dev_t dev; 222 struct uio *uio; 223 int flag; 224 { 225 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 226 int s; 227 int error = 0; 228 size_t length; 229 u_char buffer[PMS_CHUNK]; 230 231 /* Block until mouse activity occurred. */ 232 233 s = spltty(); 234 while (sc->sc_q.c_cc == 0) { 235 if (flag & IO_NDELAY) { 236 splx(s); 237 return EWOULDBLOCK; 238 } 239 sc->sc_state |= PMS_ASLP; 240 error = tsleep((caddr_t)sc, PZERO | PCATCH, "pmsrea", 0); 241 if (error) { 242 sc->sc_state &= ~PMS_ASLP; 243 splx(s); 244 return error; 245 } 246 } 247 splx(s); 248 249 /* Transfer as many chunks as possible. */ 250 251 while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0) { 252 length = min(sc->sc_q.c_cc, uio->uio_resid); 253 if (length > sizeof(buffer)) 254 length = sizeof(buffer); 255 256 /* Remove a small chunk from the input queue. */ 257 (void) q_to_b(&sc->sc_q, buffer, length); 258 259 /* Copy the data to the user process. */ 260 error = uiomove(buffer, length, uio); 261 if (error) 262 break; 263 } 264 265 return error; 266 } 267 268 int 269 opmsioctl(dev, cmd, addr, flag) 270 dev_t dev; 271 u_long cmd; 272 caddr_t addr; 273 int flag; 274 { 275 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 276 struct mouseinfo info; 277 int s; 278 int error; 279 280 switch (cmd) { 281 case MOUSEIOCREAD: 282 s = spltty(); 283 284 info.status = sc->sc_status; 285 if (sc->sc_x || sc->sc_y) 286 info.status |= MOVEMENT; 287 288 if (sc->sc_x > 127) 289 info.xmotion = 127; 290 else if (sc->sc_x < -127) 291 /* Bounding at -127 avoids a bug in XFree86. */ 292 info.xmotion = -127; 293 else 294 info.xmotion = sc->sc_x; 295 296 if (sc->sc_y > 127) 297 info.ymotion = 127; 298 else if (sc->sc_y < -127) 299 info.ymotion = -127; 300 else 301 info.ymotion = sc->sc_y; 302 303 /* Reset historical information. */ 304 sc->sc_x = sc->sc_y = 0; 305 sc->sc_status &= ~BUTCHNGMASK; 306 ndflush(&sc->sc_q, sc->sc_q.c_cc); 307 308 splx(s); 309 error = copyout(&info, addr, sizeof(struct mouseinfo)); 310 break; 311 default: 312 error = EINVAL; 313 break; 314 } 315 316 return error; 317 } 318 319 /* Masks for the first byte of a packet */ 320 #define PS2LBUTMASK 0x01 321 #define PS2RBUTMASK 0x02 322 #define PS2MBUTMASK 0x04 323 324 int 325 opmsintr(arg) 326 void *arg; 327 { 328 struct opms_softc *sc = arg; 329 static int state = 0; 330 static u_char buttons; 331 u_char changed; 332 static char dx, dy; 333 u_char buffer[5]; 334 335 if ((sc->sc_state & PMS_OPEN) == 0) { 336 /* Interrupts are not expected. Discard the byte. */ 337 kbd_flush_input(); 338 return 0; 339 } 340 341 switch (state) { 342 343 case 0: 344 buttons = kbd_data_read_1(); 345 if ((buttons & 0xc0) == 0) 346 ++state; 347 break; 348 349 case 1: 350 dx = kbd_data_read_1(); 351 /* Bounding at -127 avoids a bug in XFree86. */ 352 dx = (dx == -128) ? -127 : dx; 353 ++state; 354 break; 355 356 case 2: 357 dy = kbd_data_read_1(); 358 dy = (dy == -128) ? -127 : dy; 359 state = 0; 360 361 buttons = ((buttons & PS2LBUTMASK) << 2) | 362 ((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1); 363 changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3; 364 sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) | changed; 365 366 if (dx || dy || changed) { 367 /* Update accumulated movements. */ 368 sc->sc_x += dx; 369 sc->sc_y += dy; 370 371 /* Add this event to the queue. */ 372 buffer[0] = 0x80 | (buttons & BUTSTATMASK); 373 if(dx < 0) 374 buffer[0] |= 0x10; 375 buffer[1] = dx & 0x7f; 376 if(dy < 0) 377 buffer[0] |= 0x20; 378 buffer[2] = dy & 0x7f; 379 buffer[3] = buffer[4] = 0; 380 (void) b_to_q(buffer, sizeof buffer, &sc->sc_q); 381 382 if (sc->sc_state & PMS_ASLP) { 383 sc->sc_state &= ~PMS_ASLP; 384 wakeup((caddr_t)sc); 385 } 386 selnotify(&sc->sc_rsel, 0); 387 } 388 389 break; 390 } 391 return -1; 392 } 393 394 int 395 opmspoll(dev, events, p) 396 dev_t dev; 397 int events; 398 struct proc *p; 399 { 400 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 401 int revents = 0; 402 int s = spltty(); 403 404 if (events & (POLLIN | POLLRDNORM)) { 405 if (sc->sc_q.c_cc > 0) 406 revents |= events & (POLLIN | POLLRDNORM); 407 else 408 selrecord(p, &sc->sc_rsel); 409 } 410 411 splx(s); 412 return (revents); 413 } 414 415 static void 416 filt_opmsrdetach(struct knote *kn) 417 { 418 struct opms_softc *sc = (void *) kn->kn_hook; 419 int s; 420 421 s = spltty(); 422 SLIST_REMOVE(&sc->sc_rsel.si_klist, kn, knote, kn_selnext); 423 splx(s); 424 } 425 426 static int 427 filt_opmsread(struct knote *kn, long hint) 428 { 429 struct opms_softc *sc = (void *) kn->kn_hook; 430 431 kn->kn_data = sc->sc_q.c_cc; 432 return (kn->kn_data > 0); 433 } 434 435 static const struct filterops opmsread_filtops = 436 { 1, NULL, filt_opmsrdetach, filt_opmsread }; 437 438 int 439 opmskqfilter(dev_t dev, struct knote *kn) 440 { 441 struct opms_softc *sc = opms_cd.cd_devs[LMSUNIT(dev)]; 442 struct klist *klist; 443 int s; 444 445 switch (kn->kn_filter) { 446 case EVFILT_READ: 447 klist = &sc->sc_rsel.si_klist; 448 kn->kn_fop = &opmsread_filtops; 449 break; 450 451 default: 452 return (1); 453 } 454 455 kn->kn_hook = (void *) sc; 456 457 s = spltty(); 458 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 459 splx(s); 460 461 return (0); 462 } 463
Indexes created Tue Sep 30 11:09:46 GMT 2025