opms.c revision 1.1.4.1
1 /* $NetBSD: opms.c,v 1.1.4.1 2001/09/09 02:39:42 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 54 #include <machine/bus.h> 55 #include <machine/kbdreg.h> 56 #include <machine/mouse.h> 57 58 #include <arc/dev/pcconsvar.h> 59 #include <arc/dev/opmsvar.h> 60 61 #define PMSUNIT(dev) (minor(dev)) 62 63 /* status bits */ 64 #define PMS_OBUF_FULL 0x01 65 #define PMS_IBUF_FULL 0x02 66 67 /* controller commands */ 68 #define PMS_INT_ENABLE 0x47 /* enable controller interrupts */ 69 #define PMS_INT_DISABLE 0x65 /* disable controller interrupts */ 70 #define PMS_AUX_ENABLE 0xa7 /* enable auxiliary port */ 71 #define PMS_AUX_DISABLE 0xa8 /* disable auxiliary port */ 72 #define PMS_MAGIC_1 0xa9 /* XXX */ 73 74 #define PMS_8042_CMD 0x65 75 76 /* mouse commands */ 77 #define PMS_SET_SCALE11 0xe6 /* set scaling 1:1 */ 78 #define PMS_SET_SCALE21 0xe7 /* set scaling 2:1 */ 79 #define PMS_SET_RES 0xe8 /* set resolution */ 80 #define PMS_GET_SCALE 0xe9 /* get scaling factor */ 81 #define PMS_SET_STREAM 0xea /* set streaming mode */ 82 #define PMS_SET_SAMPLE 0xf3 /* set sampling rate */ 83 #define PMS_DEV_ENABLE 0xf4 /* mouse on */ 84 #define PMS_DEV_DISABLE 0xf5 /* mouse off */ 85 #define PMS_RESET 0xff /* reset */ 86 87 #define PMS_CHUNK 128 /* chunk size for read */ 88 #define PMS_BSIZE 1020 /* buffer size */ 89 90 #define FLUSHQ(q) { if((q)->c_cc) ndflush(q, (q)->c_cc); } 91 92 extern struct cfdriver opms_cd; 93 94 cdev_decl(opms); 95 96 static __inline void pms_dev_cmd __P((u_char)); 97 static __inline void pms_aux_cmd __P((u_char)); 98 static __inline void pms_pit_cmd __P((u_char)); 99 100 static __inline void 101 pms_dev_cmd(value) 102 u_char value; 103 { 104 kbd_flush_input(); 105 kbd_cmd_write_1(0xd4); 106 kbd_flush_input(); 107 kbd_data_write_1(value); 108 } 109 110 static __inline void 111 pms_aux_cmd(value) 112 u_char value; 113 { 114 kbd_flush_input(); 115 kbd_cmd_write_1(value); 116 } 117 118 static __inline void 119 pms_pit_cmd(value) 120 u_char value; 121 { 122 kbd_flush_input(); 123 kbd_cmd_write_1(0x60); 124 kbd_flush_input(); 125 kbd_data_write_1(value); 126 } 127 128 int opms_common_match(kbd_iot, config) 129 bus_space_tag_t kbd_iot; 130 struct pccons_config *config; 131 { 132 u_char x; 133 134 kbd_context_init(kbd_iot, config); 135 136 pms_dev_cmd(KBC_RESET); 137 pms_aux_cmd(PMS_MAGIC_1); 138 delay(10000); 139 x = kbd_data_read_1(); 140 pms_pit_cmd(PMS_INT_DISABLE); 141 if (x & 0x04) 142 return 0; 143 144 return 1; 145 } 146 147 void 148 opms_common_attach(sc, opms_iot, config) 149 struct opms_softc *sc; 150 bus_space_tag_t opms_iot; 151 struct pccons_config *config; 152 { 153 kbd_context_init(opms_iot, config); 154 155 /* Other initialization was done by opmsprobe. */ 156 sc->sc_state = 0; 157 } 158 159 int 160 opmsopen(dev, flag) 161 dev_t dev; 162 int flag; 163 { 164 int unit = PMSUNIT(dev); 165 struct opms_softc *sc; 166 167 if (unit >= opms_cd.cd_ndevs) 168 return ENXIO; 169 sc = opms_cd.cd_devs[unit]; 170 if (!sc) 171 return ENXIO; 172 173 if (sc->sc_state & PMS_OPEN) 174 return EBUSY; 175 176 if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1) 177 return ENOMEM; 178 179 sc->sc_state |= PMS_OPEN; 180 sc->sc_status = 0; 181 sc->sc_x = sc->sc_y = 0; 182 183 /* Enable interrupts. */ 184 pms_dev_cmd(PMS_DEV_ENABLE); 185 pms_aux_cmd(PMS_AUX_ENABLE); 186 pms_dev_cmd(PMS_SET_RES); 187 pms_dev_cmd(3); /* 8 counts/mm */ 188 pms_dev_cmd(PMS_SET_SCALE21); 189 #if 0 190 pms_dev_cmd(PMS_SET_SAMPLE); 191 pms_dev_cmd(100); /* 100 samples/sec */ 192 pms_dev_cmd(PMS_SET_STREAM); 193 #endif 194 pms_pit_cmd(PMS_INT_ENABLE); 195 196 return 0; 197 } 198 199 int 200 opmsclose(dev, flag) 201 dev_t dev; 202 int flag; 203 { 204 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 205 206 /* Disable interrupts. */ 207 pms_dev_cmd(PMS_DEV_DISABLE); 208 pms_pit_cmd(PMS_INT_DISABLE); 209 pms_aux_cmd(PMS_AUX_DISABLE); 210 211 sc->sc_state &= ~PMS_OPEN; 212 213 clfree(&sc->sc_q); 214 215 return 0; 216 } 217 218 int 219 opmsread(dev, uio, flag) 220 dev_t dev; 221 struct uio *uio; 222 int flag; 223 { 224 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 225 int s; 226 int error = 0; 227 size_t length; 228 u_char buffer[PMS_CHUNK]; 229 230 /* Block until mouse activity occured. */ 231 232 s = spltty(); 233 while (sc->sc_q.c_cc == 0) { 234 if (flag & IO_NDELAY) { 235 splx(s); 236 return EWOULDBLOCK; 237 } 238 sc->sc_state |= PMS_ASLP; 239 error = tsleep((caddr_t)sc, PZERO | PCATCH, "pmsrea", 0); 240 if (error) { 241 sc->sc_state &= ~PMS_ASLP; 242 splx(s); 243 return error; 244 } 245 } 246 splx(s); 247 248 /* Transfer as many chunks as possible. */ 249 250 while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0) { 251 length = min(sc->sc_q.c_cc, uio->uio_resid); 252 if (length > sizeof(buffer)) 253 length = sizeof(buffer); 254 255 /* Remove a small chunk from the input queue. */ 256 (void) q_to_b(&sc->sc_q, buffer, length); 257 258 /* Copy the data to the user process. */ 259 error = uiomove(buffer, length, uio); 260 if (error) 261 break; 262 } 263 264 return error; 265 } 266 267 int 268 opmsioctl(dev, cmd, addr, flag) 269 dev_t dev; 270 u_long cmd; 271 caddr_t addr; 272 int flag; 273 { 274 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 275 struct mouseinfo info; 276 int s; 277 int error; 278 279 switch (cmd) { 280 case MOUSEIOCREAD: 281 s = spltty(); 282 283 info.status = sc->sc_status; 284 if (sc->sc_x || sc->sc_y) 285 info.status |= MOVEMENT; 286 287 if (sc->sc_x > 127) 288 info.xmotion = 127; 289 else if (sc->sc_x < -127) 290 /* Bounding at -127 avoids a bug in XFree86. */ 291 info.xmotion = -127; 292 else 293 info.xmotion = sc->sc_x; 294 295 if (sc->sc_y > 127) 296 info.ymotion = 127; 297 else if (sc->sc_y < -127) 298 info.ymotion = -127; 299 else 300 info.ymotion = sc->sc_y; 301 302 /* Reset historical information. */ 303 sc->sc_x = sc->sc_y = 0; 304 sc->sc_status &= ~BUTCHNGMASK; 305 ndflush(&sc->sc_q, sc->sc_q.c_cc); 306 307 splx(s); 308 error = copyout(&info, addr, sizeof(struct mouseinfo)); 309 break; 310 default: 311 error = EINVAL; 312 break; 313 } 314 315 return error; 316 } 317 318 /* Masks for the first byte of a packet */ 319 #define PS2LBUTMASK 0x01 320 #define PS2RBUTMASK 0x02 321 #define PS2MBUTMASK 0x04 322 323 int 324 opmsintr(arg) 325 void *arg; 326 { 327 struct opms_softc *sc = arg; 328 static int state = 0; 329 static u_char buttons; 330 u_char changed; 331 static char dx, dy; 332 u_char buffer[5]; 333 334 if ((sc->sc_state & PMS_OPEN) == 0) { 335 /* Interrupts are not expected. Discard the byte. */ 336 kbd_flush_input(); 337 return 0; 338 } 339 340 switch (state) { 341 342 case 0: 343 buttons = kbd_data_read_1(); 344 if ((buttons & 0xc0) == 0) 345 ++state; 346 break; 347 348 case 1: 349 dx = kbd_data_read_1(); 350 /* Bounding at -127 avoids a bug in XFree86. */ 351 dx = (dx == -128) ? -127 : dx; 352 ++state; 353 break; 354 355 case 2: 356 dy = kbd_data_read_1(); 357 dy = (dy == -128) ? -127 : dy; 358 state = 0; 359 360 buttons = ((buttons & PS2LBUTMASK) << 2) | 361 ((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1); 362 changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3; 363 sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) | changed; 364 365 if (dx || dy || changed) { 366 /* Update accumulated movements. */ 367 sc->sc_x += dx; 368 sc->sc_y += dy; 369 370 /* Add this event to the queue. */ 371 buffer[0] = 0x80 | (buttons & BUTSTATMASK); 372 if(dx < 0) 373 buffer[0] |= 0x10; 374 buffer[1] = dx & 0x7f; 375 if(dy < 0) 376 buffer[0] |= 0x20; 377 buffer[2] = dy & 0x7f; 378 buffer[3] = buffer[4] = 0; 379 (void) b_to_q(buffer, sizeof buffer, &sc->sc_q); 380 381 if (sc->sc_state & PMS_ASLP) { 382 sc->sc_state &= ~PMS_ASLP; 383 wakeup((caddr_t)sc); 384 } 385 selnotify(&sc->sc_rsel, 0); 386 } 387 388 break; 389 } 390 return -1; 391 } 392 393 int 394 opmspoll(dev, events, p) 395 dev_t dev; 396 int events; 397 struct proc *p; 398 { 399 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 400 int revents = 0; 401 int s = spltty(); 402 403 if (events & (POLLIN | POLLRDNORM)) { 404 if (sc->sc_q.c_cc > 0) 405 revents |= events & (POLLIN | POLLRDNORM); 406 else 407 selrecord(p, &sc->sc_rsel); 408 } 409 410 splx(s); 411 return (revents); 412 } 413 414 static void 415 filt_opmsrdetach(struct knote *kn) 416 { 417 struct opms_softc *sc = (void *) kn->kn_hook; 418 int s; 419 420 s = spltty(); 421 SLIST_REMOVE(&sc->sc_rsel.si_klist, kn, knote, kn_selnext); 422 splx(s); 423 } 424 425 static int 426 filt_opmsread(struct knote *kn, long hint) 427 { 428 struct opms_softc *sc = (void *) kn->kn_hook; 429 430 kn->kn_data = sc->sc_q.c_cc; 431 return (kn->kn_data > 0); 432 } 433 434 static const struct filterops opmsread_filtops = 435 { 1, NULL, filt_opmsrdetach, filt_opmsread }; 436 437 int 438 opmskqfilter(dev_t dev, struct knote *kn) 439 { 440 struct opms_softc *sc = opms_cd.cd_devs[LMSUNIT(dev)]; 441 struct klist *klist; 442 int s; 443 444 switch (kn->kn_filter) { 445 case EVFILT_READ: 446 klist = &sc->sc_rsel.si_klist; 447 kn->kn_fop = &opmsread_filtops; 448 break; 449 450 default: 451 return (1); 452 } 453 454 kn->kn_hook = (void *) sc; 455 456 s = spltty(); 457 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 458 splx(s); 459 460 return (0); 461 } 462
Indexes created Tue Sep 30 11:09:46 GMT 2025