wsmouse.c revision 1.4
1 /* $NetBSD: wsmouse.c,v 1.4 1998/07/27 22:33:22 drochner Exp $ */ 2 3 /* 4 * Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Christopher G. Demetriou 17 * for the NetBSD Project. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 static const char _copyright[] __attribute__ ((unused)) = 34 "Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved."; 35 static const char _rcsid[] __attribute__ ((unused)) = 36 "$NetBSD: wsmouse.c,v 1.4 1998/07/27 22:33:22 drochner Exp $"; 37 38 /* 39 * Copyright (c) 1992, 1993 40 * The Regents of the University of California. All rights reserved. 41 * 42 * This software was developed by the Computer Systems Engineering group 43 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 44 * contributed to Berkeley. 45 * 46 * All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Lawrence Berkeley Laboratory. 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 * @(#)ms.c 8.1 (Berkeley) 6/11/93 80 */ 81 82 /* 83 * Mouse driver. 84 */ 85 86 #include <sys/param.h> 87 #include <sys/conf.h> 88 #include <sys/ioctl.h> 89 #include <sys/kernel.h> 90 #include <sys/proc.h> 91 #include <sys/syslog.h> 92 #include <sys/systm.h> 93 #include <sys/tty.h> 94 #include <sys/signalvar.h> 95 #include <sys/device.h> 96 97 #include <dev/wscons/wsconsio.h> 98 #include <dev/wscons/wsmousevar.h> 99 #include <dev/wscons/wseventvar.h> 100 101 #include "wsmouse.h" 102 103 struct wsmouse_softc { 104 struct device sc_dv; 105 106 const struct wsmouse_accessops *sc_accessops; 107 void *sc_accesscookie; 108 109 int sc_ready; /* accepting events */ 110 struct wseventvar sc_events; /* event queue state */ 111 112 u_int sc_mb; /* mouse button state */ 113 u_int sc_ub; /* user button state */ 114 int sc_dx; /* delta-x */ 115 int sc_dy; /* delta-y */ 116 int sc_dz; /* delta-z */ 117 }; 118 119 int wsmouse_match __P((struct device *, struct cfdata *, void *)); 120 void wsmouse_attach __P((struct device *, struct device *, void *)); 121 122 struct cfattach wsmouse_ca = { 123 sizeof (struct wsmouse_softc), wsmouse_match, wsmouse_attach, 124 }; 125 126 #if NWSMOUSE > 0 127 extern struct cfdriver wsmouse_cd; 128 #endif /* NWSMOUSE > 0 */ 129 130 cdev_decl(wsmouse); 131 132 /* 133 * Print function (for parent devices). 134 */ 135 int 136 wsmousedevprint(aux, pnp) 137 void *aux; 138 const char *pnp; 139 { 140 141 if (pnp) 142 printf("wsmouse at %s", pnp); 143 return (UNCONF); 144 } 145 146 int 147 wsmouse_match(parent, match, aux) 148 struct device *parent; 149 struct cfdata *match; 150 void *aux; 151 { 152 153 return (1); 154 } 155 156 void 157 wsmouse_attach(parent, self, aux) 158 struct device *parent, *self; 159 void *aux; 160 { 161 struct wsmouse_softc *sc = (struct wsmouse_softc *)self; 162 struct wsmousedev_attach_args *ap = aux; 163 164 printf("\n"); 165 166 sc->sc_accessops = ap->accessops; 167 sc->sc_accesscookie = ap->accesscookie; 168 sc->sc_ready = 0; /* sanity */ 169 } 170 171 void 172 wsmouse_input(wsmousedev, btns, dx, dy, dz) 173 struct device *wsmousedev; 174 u_int btns; /* 0 is up */ 175 int dx, dy, dz; 176 { 177 struct wsmouse_softc *sc = (struct wsmouse_softc *)wsmousedev; 178 struct wscons_event *ev; 179 int mb, ub, d, get, put, any; 180 181 /* 182 * Discard input if not ready. 183 */ 184 if (sc->sc_ready == 0) 185 return; 186 187 sc->sc_mb = btns; 188 sc->sc_dx += dx; 189 sc->sc_dy += dy; 190 sc->sc_dz += dz; 191 192 /* 193 * We have at least one event (mouse button, delta-X, or 194 * delta-Y; possibly all three, and possibly three separate 195 * button events). Deliver these events until we are out 196 * of changes or out of room. As events get delivered, 197 * mark them `unchanged'. 198 */ 199 any = 0; 200 get = sc->sc_events.get; 201 put = sc->sc_events.put; 202 ev = &sc->sc_events.q[put]; 203 204 /* NEXT prepares to put the next event, backing off if necessary */ 205 #define NEXT \ 206 if ((++put) % WSEVENT_QSIZE == get) { \ 207 put--; \ 208 goto out; \ 209 } 210 /* ADVANCE completes the `put' of the event */ 211 #define ADVANCE \ 212 ev++; \ 213 if (put >= WSEVENT_QSIZE) { \ 214 put = 0; \ 215 ev = &sc->sc_events.q[0]; \ 216 } \ 217 any = 1 218 /* TIMESTAMP sets `time' field of the event to the current time */ 219 #define TIMESTAMP \ 220 do { \ 221 int s; \ 222 s = splhigh(); \ 223 TIMEVAL_TO_TIMESPEC(&time, &ev->time); \ 224 splx(s); \ 225 } while (0) 226 227 mb = sc->sc_mb; 228 ub = sc->sc_ub; 229 while ((d = mb ^ ub) != 0) { 230 /* 231 * Mouse button change. Find the first change and drop 232 * it into the event queue. 233 */ 234 NEXT; 235 ev->value = ffs(d) - 1; 236 237 KASSERT(ev->value >= 0); 238 239 d = 1 << ev->value; 240 ev->type = 241 (mb & d) ? WSCONS_EVENT_MOUSE_DOWN : WSCONS_EVENT_MOUSE_UP; 242 TIMESTAMP; 243 ADVANCE; 244 ub ^= d; 245 } 246 if (sc->sc_dx) { 247 NEXT; 248 ev->type = WSCONS_EVENT_MOUSE_DELTA_X; 249 ev->value = sc->sc_dx; 250 TIMESTAMP; 251 ADVANCE; 252 sc->sc_dx = 0; 253 } 254 if (sc->sc_dy) { 255 NEXT; 256 ev->type = WSCONS_EVENT_MOUSE_DELTA_Y; 257 ev->value = sc->sc_dy; 258 TIMESTAMP; 259 ADVANCE; 260 sc->sc_dy = 0; 261 } 262 if (sc->sc_dz) { 263 NEXT; 264 ev->type = WSCONS_EVENT_MOUSE_DELTA_Z; 265 ev->value = sc->sc_dz; 266 TIMESTAMP; 267 ADVANCE; 268 sc->sc_dz = 0; 269 } 270 out: 271 if (any) { 272 sc->sc_ub = ub; 273 sc->sc_events.put = put; 274 WSEVENT_WAKEUP(&sc->sc_events); 275 } 276 } 277 278 int 279 wsmouseopen(dev, flags, mode, p) 280 dev_t dev; 281 int flags, mode; 282 struct proc *p; 283 { 284 #if NWSMOUSE > 0 285 struct wsmouse_softc *sc; 286 int error, unit; 287 288 unit = minor(dev); 289 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 290 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 291 return (ENXIO); 292 293 if (sc->sc_events.io) /* and that it's not in use */ 294 return (EBUSY); 295 296 sc->sc_events.io = p; 297 wsevent_init(&sc->sc_events); /* may cause sleep */ 298 299 sc->sc_ready = 1; /* start accepting events */ 300 301 /* enable the device, and punt if that's not possible */ 302 error = (*sc->sc_accessops->enable)(sc->sc_accesscookie); 303 if (error) { 304 sc->sc_ready = 0; /* stop accepting events */ 305 wsevent_fini(&sc->sc_events); 306 sc->sc_events.io = NULL; 307 return (error); 308 } 309 310 return (0); 311 #else 312 return (ENXIO); 313 #endif /* NWSMOUSE > 0 */ 314 } 315 316 int 317 wsmouseclose(dev, flags, mode, p) 318 dev_t dev; 319 int flags, mode; 320 struct proc *p; 321 { 322 #if NWSMOUSE > 0 323 struct wsmouse_softc *sc; 324 int unit; 325 326 unit = minor(dev); 327 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 328 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 329 return (ENXIO); 330 331 (*sc->sc_accessops->disable)(sc->sc_accesscookie); 332 333 sc->sc_ready = 0; /* stop accepting events */ 334 wsevent_fini(&sc->sc_events); 335 sc->sc_events.io = NULL; 336 return (0); 337 #else 338 return (ENXIO); 339 #endif /* NWSMOUSE > 0 */ 340 } 341 342 int 343 wsmouseread(dev, uio, flags) 344 dev_t dev; 345 struct uio *uio; 346 int flags; 347 { 348 #if NWSMOUSE > 0 349 struct wsmouse_softc *sc; 350 int unit; 351 352 unit = minor(dev); 353 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 354 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 355 return (ENXIO); 356 357 return (wsevent_read(&sc->sc_events, uio, flags)); 358 #else 359 return (ENXIO); 360 #endif /* NWSMOUSE > 0 */ 361 } 362 363 int 364 wsmouseioctl(dev, cmd, data, flag, p) 365 dev_t dev; 366 u_long cmd; 367 caddr_t data; 368 int flag; 369 struct proc *p; 370 { 371 #if NWSMOUSE > 0 372 struct wsmouse_softc *sc; 373 int unit, error; 374 375 unit = minor(dev); 376 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 377 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 378 return (ENXIO); 379 380 /* 381 * Try the generic ioctls that the wsmouse interface supports. 382 */ 383 switch (cmd) { 384 case FIONBIO: /* we will remove this someday (soon???) */ 385 return (0); 386 387 case FIOASYNC: 388 sc->sc_events.async = *(int *)data != 0; 389 return (0); 390 391 case TIOCSPGRP: 392 if (*(int *)data != sc->sc_events.io->p_pgid) 393 return (EPERM); 394 return (0); 395 } 396 397 /* 398 * Try the mouse driver for WSMOUSEIO ioctls. It returns -1 399 * if it didn't recognize the request. 400 */ 401 error = (*sc->sc_accessops->ioctl)(sc->sc_accesscookie, cmd, 402 data, flag, p); 403 return (error != -1 ? error : ENOTTY); 404 #else 405 return (ENXIO); 406 #endif /* NWSMOUSE > 0 */ 407 } 408 409 int 410 wsmousepoll(dev, events, p) 411 dev_t dev; 412 int events; 413 struct proc *p; 414 { 415 #if NWSMOUSE > 0 416 struct wsmouse_softc *sc = wsmouse_cd.cd_devs[minor(dev)]; 417 418 return (wsevent_poll(&sc->sc_events, events, p)); 419 #else 420 return (0); 421 #endif /* NWSMOUSE > 0 */ 422 } 423
Indexes created Thu Sep 25 16:09:42 GMT 2025