wsmouse.c revision 1.1
1 /* $NetBSD: wsmouse.c,v 1.1 1998/03/22 14:24:04 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 1.1 1998/03/22 14:24:04 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 struct wsmouse_softc { 102 struct device sc_dv; 103 104 const struct wsmouse_accessops *sc_accessops; 105 void *sc_accesscookie; 106 107 int sc_ready; /* accepting events */ 108 struct wseventvar sc_events; /* event queue state */ 109 110 u_int sc_mb; /* mouse button state */ 111 u_int sc_ub; /* user button state */ 112 int sc_dx; /* delta-x */ 113 int sc_dy; /* delta-y */ 114 }; 115 116 #ifdef __BROKEN_INDIRECT_CONFIG 117 int wsmouse_match __P((struct device *, void *, void *)); 118 #else 119 int wsmouse_match __P((struct device *, struct cfdata *, void *)); 120 #endif 121 void wsmouse_attach __P((struct device *, struct device *, void *)); 122 123 struct cfattach wsmouse_ca = { 124 sizeof (struct wsmouse_softc), wsmouse_match, wsmouse_attach, 125 }; 126 127 extern struct cfdriver wsmouse_cd; 128 129 cdev_decl(wsmouse); 130 131 /* 132 * Print function (for parent devices). 133 */ 134 int 135 wsmousedevprint(aux, pnp) 136 void *aux; 137 const char *pnp; 138 { 139 140 if (pnp) 141 printf("wsmouse at %s", pnp); 142 return (UNCONF); 143 } 144 145 int 146 wsmouse_match(parent, match, aux) 147 struct device *parent; 148 #ifdef __BROKEN_INDIRECT_CONFIG 149 void *match; 150 #else 151 struct cfdata *match; 152 #endif 153 void *aux; 154 { 155 156 return (1); 157 } 158 159 void 160 wsmouse_attach(parent, self, aux) 161 struct device *parent, *self; 162 void *aux; 163 { 164 struct wsmouse_softc *sc = (struct wsmouse_softc *)self; 165 struct wsmousedev_attach_args *ap = aux; 166 167 printf("\n"); 168 169 sc->sc_accessops = ap->accessops; 170 sc->sc_accesscookie = ap->accesscookie; 171 sc->sc_ready = 0; /* sanity */ 172 } 173 174 void 175 wsmouse_input(wsmousedev, btns, dx, dy) 176 struct device *wsmousedev; 177 u_int btns; /* 0 is up */ 178 int dx, dy; 179 { 180 struct wsmouse_softc *sc = (struct wsmouse_softc *)wsmousedev; 181 struct wscons_event *ev; 182 int mb, ub, d, get, put, any; 183 184 /* 185 * Discard input if not ready. 186 */ 187 if (sc->sc_ready == 0) 188 return; 189 190 sc->sc_mb = btns; 191 sc->sc_dx += dx; 192 sc->sc_dy += dy; 193 194 /* 195 * We have at least one event (mouse button, delta-X, or 196 * delta-Y; possibly all three, and possibly three separate 197 * button events). Deliver these events until we are out 198 * of changes or out of room. As events get delivered, 199 * mark them `unchanged'. 200 */ 201 any = 0; 202 get = sc->sc_events.get; 203 put = sc->sc_events.put; 204 ev = &sc->sc_events.q[put]; 205 206 /* NEXT prepares to put the next event, backing off if necessary */ 207 #define NEXT \ 208 if ((++put) % WSEVENT_QSIZE == get) { \ 209 put--; \ 210 goto out; \ 211 } 212 /* ADVANCE completes the `put' of the event */ 213 #define ADVANCE \ 214 ev++; \ 215 if (put >= WSEVENT_QSIZE) { \ 216 put = 0; \ 217 ev = &sc->sc_events.q[0]; \ 218 } \ 219 any = 1 220 /* TIMESTAMP sets `time' field of the event to the current time */ 221 #define TIMESTAMP \ 222 do { \ 223 int s; \ 224 s = splhigh(); \ 225 TIMEVAL_TO_TIMESPEC(&time, &ev->time); \ 226 splx(s); \ 227 } while (0) 228 229 mb = sc->sc_mb; 230 ub = sc->sc_ub; 231 while ((d = mb ^ ub) != 0) { 232 /* 233 * Mouse button change. Find the first change and drop 234 * it into the event queue. 235 */ 236 NEXT; 237 ev->value = ffs(d) - 1; 238 239 KASSERT(ev->value >= 0); 240 241 d = 1 << ev->value; 242 ev->type = 243 (mb & d) ? WSCONS_EVENT_MOUSE_DOWN : WSCONS_EVENT_MOUSE_UP; 244 TIMESTAMP; 245 ADVANCE; 246 ub ^= d; 247 } 248 if (sc->sc_dx) { 249 NEXT; 250 ev->type = WSCONS_EVENT_MOUSE_DELTA_X; 251 ev->value = sc->sc_dx; 252 TIMESTAMP; 253 ADVANCE; 254 sc->sc_dx = 0; 255 } 256 if (sc->sc_dy) { 257 NEXT; 258 ev->type = WSCONS_EVENT_MOUSE_DELTA_Y; 259 ev->value = sc->sc_dy; 260 TIMESTAMP; 261 ADVANCE; 262 sc->sc_dy = 0; 263 } 264 out: 265 if (any) { 266 sc->sc_ub = ub; 267 sc->sc_events.put = put; 268 WSEVENT_WAKEUP(&sc->sc_events); 269 } 270 } 271 272 int 273 wsmouseopen(dev, flags, mode, p) 274 dev_t dev; 275 int flags, mode; 276 struct proc *p; 277 { 278 struct wsmouse_softc *sc; 279 int error, unit; 280 281 unit = minor(dev); 282 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 283 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 284 return (ENXIO); 285 286 if (sc->sc_events.io) /* and that it's not in use */ 287 return (EBUSY); 288 289 sc->sc_events.io = p; 290 wsevent_init(&sc->sc_events); /* may cause sleep */ 291 292 sc->sc_ready = 1; /* start accepting events */ 293 294 /* enable the device, and punt if that's not possible */ 295 error = (*sc->sc_accessops->enable)(sc->sc_accesscookie); 296 if (error) { 297 sc->sc_ready = 0; /* stop accepting events */ 298 wsevent_fini(&sc->sc_events); 299 sc->sc_events.io = NULL; 300 return (error); 301 } 302 303 return (0); 304 } 305 306 int 307 wsmouseclose(dev, flags, mode, p) 308 dev_t dev; 309 int flags, mode; 310 struct proc *p; 311 { 312 struct wsmouse_softc *sc; 313 int unit; 314 315 unit = minor(dev); 316 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 317 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 318 return (ENXIO); 319 320 (*sc->sc_accessops->disable)(sc->sc_accesscookie); 321 322 sc->sc_ready = 0; /* stop accepting events */ 323 wsevent_fini(&sc->sc_events); 324 sc->sc_events.io = NULL; 325 return (0); 326 } 327 328 int 329 wsmouseread(dev, uio, flags) 330 dev_t dev; 331 struct uio *uio; 332 int flags; 333 { 334 struct wsmouse_softc *sc; 335 int unit; 336 337 unit = minor(dev); 338 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 339 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 340 return (ENXIO); 341 342 return (wsevent_read(&sc->sc_events, uio, flags)); 343 } 344 345 int 346 wsmouseioctl(dev, cmd, data, flag, p) 347 dev_t dev; 348 u_long cmd; 349 caddr_t data; 350 int flag; 351 struct proc *p; 352 { 353 struct wsmouse_softc *sc; 354 int unit, error; 355 356 unit = minor(dev); 357 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 358 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 359 return (ENXIO); 360 361 /* 362 * Try the generic ioctls that the wsmouse interface supports. 363 */ 364 switch (cmd) { 365 case FIONBIO: /* we will remove this someday (soon???) */ 366 return (0); 367 368 case FIOASYNC: 369 sc->sc_events.async = *(int *)data != 0; 370 return (0); 371 372 case TIOCSPGRP: 373 if (*(int *)data != sc->sc_events.io->p_pgid) 374 return (EPERM); 375 return (0); 376 } 377 378 /* 379 * Try the mouse driver for WSMOUSEIO ioctls. It returns -1 380 * if it didn't recognize the request. 381 */ 382 error = (*sc->sc_accessops->ioctl)(sc->sc_accesscookie, cmd, 383 data, flag, p); 384 return (error != -1 ? error : ENOTTY); 385 } 386 387 int 388 wsmousepoll(dev, events, p) 389 dev_t dev; 390 int events; 391 struct proc *p; 392 { 393 struct wsmouse_softc *sc = wsmouse_cd.cd_devs[minor(dev)]; 394 395 return (wsevent_poll(&sc->sc_events, events, p)); 396 } 397
Indexes created Thu Sep 25 16:09:42 GMT 2025