wsmouse.c revision 1.2
1 /* $NetBSD: wsmouse.c,v 1.2 1998/06/09 07:34:23 thorpej 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 1.2 1998/06/09 07:34:23 thorpej 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 int wsmouse_match __P((struct device *, struct cfdata *, void *)); 117 void wsmouse_attach __P((struct device *, struct device *, void *)); 118 119 struct cfattach wsmouse_ca = { 120 sizeof (struct wsmouse_softc), wsmouse_match, wsmouse_attach, 121 }; 122 123 extern struct cfdriver wsmouse_cd; 124 125 cdev_decl(wsmouse); 126 127 /* 128 * Print function (for parent devices). 129 */ 130 int 131 wsmousedevprint(aux, pnp) 132 void *aux; 133 const char *pnp; 134 { 135 136 if (pnp) 137 printf("wsmouse at %s", pnp); 138 return (UNCONF); 139 } 140 141 int 142 wsmouse_match(parent, match, aux) 143 struct device *parent; 144 struct cfdata *match; 145 void *aux; 146 { 147 148 return (1); 149 } 150 151 void 152 wsmouse_attach(parent, self, aux) 153 struct device *parent, *self; 154 void *aux; 155 { 156 struct wsmouse_softc *sc = (struct wsmouse_softc *)self; 157 struct wsmousedev_attach_args *ap = aux; 158 159 printf("\n"); 160 161 sc->sc_accessops = ap->accessops; 162 sc->sc_accesscookie = ap->accesscookie; 163 sc->sc_ready = 0; /* sanity */ 164 } 165 166 void 167 wsmouse_input(wsmousedev, btns, dx, dy) 168 struct device *wsmousedev; 169 u_int btns; /* 0 is up */ 170 int dx, dy; 171 { 172 struct wsmouse_softc *sc = (struct wsmouse_softc *)wsmousedev; 173 struct wscons_event *ev; 174 int mb, ub, d, get, put, any; 175 176 /* 177 * Discard input if not ready. 178 */ 179 if (sc->sc_ready == 0) 180 return; 181 182 sc->sc_mb = btns; 183 sc->sc_dx += dx; 184 sc->sc_dy += dy; 185 186 /* 187 * We have at least one event (mouse button, delta-X, or 188 * delta-Y; possibly all three, and possibly three separate 189 * button events). Deliver these events until we are out 190 * of changes or out of room. As events get delivered, 191 * mark them `unchanged'. 192 */ 193 any = 0; 194 get = sc->sc_events.get; 195 put = sc->sc_events.put; 196 ev = &sc->sc_events.q[put]; 197 198 /* NEXT prepares to put the next event, backing off if necessary */ 199 #define NEXT \ 200 if ((++put) % WSEVENT_QSIZE == get) { \ 201 put--; \ 202 goto out; \ 203 } 204 /* ADVANCE completes the `put' of the event */ 205 #define ADVANCE \ 206 ev++; \ 207 if (put >= WSEVENT_QSIZE) { \ 208 put = 0; \ 209 ev = &sc->sc_events.q[0]; \ 210 } \ 211 any = 1 212 /* TIMESTAMP sets `time' field of the event to the current time */ 213 #define TIMESTAMP \ 214 do { \ 215 int s; \ 216 s = splhigh(); \ 217 TIMEVAL_TO_TIMESPEC(&time, &ev->time); \ 218 splx(s); \ 219 } while (0) 220 221 mb = sc->sc_mb; 222 ub = sc->sc_ub; 223 while ((d = mb ^ ub) != 0) { 224 /* 225 * Mouse button change. Find the first change and drop 226 * it into the event queue. 227 */ 228 NEXT; 229 ev->value = ffs(d) - 1; 230 231 KASSERT(ev->value >= 0); 232 233 d = 1 << ev->value; 234 ev->type = 235 (mb & d) ? WSCONS_EVENT_MOUSE_DOWN : WSCONS_EVENT_MOUSE_UP; 236 TIMESTAMP; 237 ADVANCE; 238 ub ^= d; 239 } 240 if (sc->sc_dx) { 241 NEXT; 242 ev->type = WSCONS_EVENT_MOUSE_DELTA_X; 243 ev->value = sc->sc_dx; 244 TIMESTAMP; 245 ADVANCE; 246 sc->sc_dx = 0; 247 } 248 if (sc->sc_dy) { 249 NEXT; 250 ev->type = WSCONS_EVENT_MOUSE_DELTA_Y; 251 ev->value = sc->sc_dy; 252 TIMESTAMP; 253 ADVANCE; 254 sc->sc_dy = 0; 255 } 256 out: 257 if (any) { 258 sc->sc_ub = ub; 259 sc->sc_events.put = put; 260 WSEVENT_WAKEUP(&sc->sc_events); 261 } 262 } 263 264 int 265 wsmouseopen(dev, flags, mode, p) 266 dev_t dev; 267 int flags, mode; 268 struct proc *p; 269 { 270 struct wsmouse_softc *sc; 271 int error, unit; 272 273 unit = minor(dev); 274 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 275 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 276 return (ENXIO); 277 278 if (sc->sc_events.io) /* and that it's not in use */ 279 return (EBUSY); 280 281 sc->sc_events.io = p; 282 wsevent_init(&sc->sc_events); /* may cause sleep */ 283 284 sc->sc_ready = 1; /* start accepting events */ 285 286 /* enable the device, and punt if that's not possible */ 287 error = (*sc->sc_accessops->enable)(sc->sc_accesscookie); 288 if (error) { 289 sc->sc_ready = 0; /* stop accepting events */ 290 wsevent_fini(&sc->sc_events); 291 sc->sc_events.io = NULL; 292 return (error); 293 } 294 295 return (0); 296 } 297 298 int 299 wsmouseclose(dev, flags, mode, p) 300 dev_t dev; 301 int flags, mode; 302 struct proc *p; 303 { 304 struct wsmouse_softc *sc; 305 int unit; 306 307 unit = minor(dev); 308 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 309 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 310 return (ENXIO); 311 312 (*sc->sc_accessops->disable)(sc->sc_accesscookie); 313 314 sc->sc_ready = 0; /* stop accepting events */ 315 wsevent_fini(&sc->sc_events); 316 sc->sc_events.io = NULL; 317 return (0); 318 } 319 320 int 321 wsmouseread(dev, uio, flags) 322 dev_t dev; 323 struct uio *uio; 324 int flags; 325 { 326 struct wsmouse_softc *sc; 327 int unit; 328 329 unit = minor(dev); 330 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 331 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 332 return (ENXIO); 333 334 return (wsevent_read(&sc->sc_events, uio, flags)); 335 } 336 337 int 338 wsmouseioctl(dev, cmd, data, flag, p) 339 dev_t dev; 340 u_long cmd; 341 caddr_t data; 342 int flag; 343 struct proc *p; 344 { 345 struct wsmouse_softc *sc; 346 int unit, error; 347 348 unit = minor(dev); 349 if (unit >= wsmouse_cd.cd_ndevs || /* make sure it was attached */ 350 (sc = wsmouse_cd.cd_devs[unit]) == NULL) 351 return (ENXIO); 352 353 /* 354 * Try the generic ioctls that the wsmouse interface supports. 355 */ 356 switch (cmd) { 357 case FIONBIO: /* we will remove this someday (soon???) */ 358 return (0); 359 360 case FIOASYNC: 361 sc->sc_events.async = *(int *)data != 0; 362 return (0); 363 364 case TIOCSPGRP: 365 if (*(int *)data != sc->sc_events.io->p_pgid) 366 return (EPERM); 367 return (0); 368 } 369 370 /* 371 * Try the mouse driver for WSMOUSEIO ioctls. It returns -1 372 * if it didn't recognize the request. 373 */ 374 error = (*sc->sc_accessops->ioctl)(sc->sc_accesscookie, cmd, 375 data, flag, p); 376 return (error != -1 ? error : ENOTTY); 377 } 378 379 int 380 wsmousepoll(dev, events, p) 381 dev_t dev; 382 int events; 383 struct proc *p; 384 { 385 struct wsmouse_softc *sc = wsmouse_cd.cd_devs[minor(dev)]; 386 387 return (wsevent_poll(&sc->sc_events, events, p)); 388 } 389
Indexes created Thu Oct 23 22:10:10 GMT 2025