ms.c revision 1.26
1 /* $NetBSD: ms.c,v 1.26 2014/07/25 08:10:32 dholland Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Leo Weppelman. 5 * All rights reserved. 6 * 7 * based on: 8 * 9 * Copyright (c) 1992, 1993 10 * The Regents of the University of California. All rights reserved. 11 * 12 * This software was developed by the Computer Systems Engineering group 13 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 14 * contributed to Berkeley. 15 * 16 * All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Lawrence Berkeley Laboratory. 20 * 21 * Redistribution and use in source and binary forms, with or without 22 * modification, are permitted provided that the following conditions 23 * are met: 24 * 1. Redistributions of source code must retain the above copyright 25 * notice, this list of conditions and the following disclaimer. 26 * 2. Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in the 28 * documentation and/or other materials provided with the distribution. 29 * 3. Neither the name of the University nor the names of its contributors 30 * may be used to endorse or promote products derived from this software 31 * without specific prior written permission. 32 * 33 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 34 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 35 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 36 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 37 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 38 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 39 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 41 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 42 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 43 * SUCH DAMAGE. 44 * 45 * @(#)ms.c 8.1 (Berkeley) 6/11/93 46 * 47 * Header: ms.c,v 1.5 92/11/26 01:28:47 torek Exp (LBL) 48 */ 49 50 /* 51 * Mouse driver. 52 */ 53 54 #include <sys/cdefs.h> 55 __KERNEL_RCSID(0, "$NetBSD: ms.c,v 1.26 2014/07/25 08:10:32 dholland Exp $"); 56 57 #include <sys/param.h> 58 #include <sys/conf.h> 59 #include <sys/ioctl.h> 60 #include <sys/kernel.h> 61 #include <sys/proc.h> 62 #include <sys/systm.h> 63 #include <sys/callout.h> 64 #include <sys/tty.h> 65 #include <sys/signalvar.h> 66 67 #include <machine/msioctl.h> 68 #include <atari/dev/event_var.h> 69 #include <atari/dev/vuid_event.h> 70 #include <atari/dev/kbdvar.h> 71 #include <atari/dev/msvar.h> 72 73 #include "mouse.h" 74 #if NMOUSE > 0 75 76 /* there's really no more physical ports on an atari. */ 77 #if NMOUSE > 1 78 #undef NMOUSE 79 #define NMOUSE 1 80 #endif 81 82 typedef void (*FPV)(void *); 83 84 static struct ms_softc ms_softc[NMOUSE]; 85 86 dev_type_open(msopen); 87 dev_type_close(msclose); 88 dev_type_read(msread); 89 dev_type_ioctl(msioctl); 90 dev_type_poll(mspoll); 91 dev_type_kqfilter(mskqfilter); 92 93 const struct cdevsw ms_cdevsw = { 94 .d_open = msopen, 95 .d_close = msclose, 96 .d_read = msread, 97 .d_write = nowrite, 98 .d_ioctl = msioctl, 99 .d_stop = nostop, 100 .d_tty = notty, 101 .d_poll = mspoll, 102 .d_mmap = nommap, 103 .d_kqfilter = mskqfilter, 104 .d_discard = nodiscard, 105 .d_flag = 0 106 }; 107 108 static void ms_3b_delay(struct ms_softc *); 109 110 int 111 mouseattach(int cnt) 112 { 113 printf("1 mouse configured\n"); 114 ms_softc[0].ms_emul3b = 1; 115 callout_init(&ms_softc[0].ms_delay_ch, 0); 116 return(NMOUSE); 117 } 118 119 static void 120 ms_3b_delay(struct ms_softc *ms) 121 { 122 REL_MOUSE rel_ms; 123 124 rel_ms.id = TIMEOUT_ID; 125 rel_ms.dx = rel_ms.dy = 0; 126 mouse_soft(&rel_ms, sizeof(rel_ms), KBD_TIMEO_PKG); 127 } 128 /* 129 * Note that we are called from the keyboard software interrupt! 130 */ 131 void 132 mouse_soft(REL_MOUSE *rel_ms, int size, int type) 133 { 134 struct ms_softc *ms = &ms_softc[0]; 135 struct firm_event *fe, *fe2; 136 REL_MOUSE fake_mouse; 137 int get, put; 138 int sps; 139 u_char mbut, bmask; 140 int flush_buttons; 141 142 if (ms->ms_events.ev_io == NULL) 143 return; 144 145 switch (type) { 146 case KBD_JOY1_PKG: 147 /* 148 * Ignore if in emulation mode 149 */ 150 if (ms->ms_emul3b) 151 return; 152 153 /* 154 * There are some mice that have their middle button 155 * wired to the 'up' bit of joystick 1.... 156 * Simulate a mouse packet with dx = dy = 0, the middle 157 * button state set by UP and the other buttons unchanged. 158 * Flush all button changes. 159 */ 160 flush_buttons = 1; 161 fake_mouse.id = (rel_ms->dx & 1 ? 4 : 0) | (ms->ms_buttons & 3); 162 fake_mouse.dx = fake_mouse.dy = 0; 163 rel_ms = &fake_mouse; 164 break; 165 case KBD_TIMEO_PKG: 166 /* 167 * Timeout package. No button changes and no movement. 168 * Flush all button changes. 169 */ 170 flush_buttons = 1; 171 fake_mouse.id = ms->ms_buttons; 172 fake_mouse.dx = fake_mouse.dy = 0; 173 rel_ms = &fake_mouse; 174 break; 175 case KBD_RMS_PKG: 176 /* 177 * Normal mouse package. Always copy the middle button 178 * status. The emulation code decides if button changes 179 * must be flushed. 180 */ 181 rel_ms->id = (ms->ms_buttons & 4) | (rel_ms->id & 3); 182 flush_buttons = (ms->ms_emul3b) ? 0 : 1; 183 break; 184 default: 185 return; 186 } 187 188 sps = splev(); 189 get = ms->ms_events.ev_get; 190 put = ms->ms_events.ev_put; 191 fe = &ms->ms_events.ev_q[put]; 192 193 if ((type != KBD_TIMEO_PKG) && ms->ms_emul3b && ms->ms_bq_idx) 194 callout_stop(&ms->ms_delay_ch); 195 196 /* 197 * Button states are encoded in the lower 3 bits of 'id' 198 */ 199 if (!(mbut = (rel_ms->id ^ ms->ms_buttons)) && (put != get)) { 200 /* 201 * Compact dx/dy messages. Always generate an event when 202 * a button is pressed or the event queue is empty. 203 */ 204 ms->ms_dx += rel_ms->dx; 205 ms->ms_dy += rel_ms->dy; 206 goto out; 207 } 208 rel_ms->dx += ms->ms_dx; 209 rel_ms->dy += ms->ms_dy; 210 ms->ms_dx = ms->ms_dy = 0; 211 212 /* 213 * Output location events _before_ button events ie. make sure 214 * the button is pressed at the correct location. 215 */ 216 if (rel_ms->dx) { 217 if ((++put) % EV_QSIZE == get) { 218 put--; 219 goto out; 220 } 221 fe->id = LOC_X_DELTA; 222 fe->value = rel_ms->dx; 223 firm_gettime(fe); 224 if (put >= EV_QSIZE) { 225 put = 0; 226 fe = &ms->ms_events.ev_q[0]; 227 } 228 else fe++; 229 } 230 if (rel_ms->dy) { 231 if ((++put) % EV_QSIZE == get) { 232 put--; 233 goto out; 234 } 235 fe->id = LOC_Y_DELTA; 236 fe->value = rel_ms->dy; 237 firm_gettime(fe); 238 if (put >= EV_QSIZE) { 239 put = 0; 240 fe = &ms->ms_events.ev_q[0]; 241 } 242 else fe++; 243 } 244 if (mbut && (type != KBD_TIMEO_PKG)) { 245 for (bmask = 1; bmask < 0x08; bmask <<= 1) { 246 if (!(mbut & bmask)) 247 continue; 248 fe2 = &ms->ms_bq[ms->ms_bq_idx++]; 249 if (bmask == 1) 250 fe2->id = MS_RIGHT; 251 else if (bmask == 2) 252 fe2->id = MS_LEFT; 253 else fe2->id = MS_MIDDLE; 254 fe2->value = rel_ms->id & bmask ? VKEY_DOWN : VKEY_UP; 255 firm_gettime(fe2); 256 } 257 } 258 259 /* 260 * Handle 3rd button emulation. 261 */ 262 if (ms->ms_emul3b && ms->ms_bq_idx && (type != KBD_TIMEO_PKG)) { 263 /* 264 * If the middle button is pressed, any change to 265 * one of the other buttons releases all. 266 */ 267 if ((ms->ms_buttons & 4) && (mbut & 3)) { 268 ms->ms_bq[0].id = MS_MIDDLE; 269 ms->ms_bq_idx = 1; 270 rel_ms->id = 0; 271 flush_buttons = 1; 272 goto out; 273 } 274 if (ms->ms_bq_idx == 2) { 275 if (ms->ms_bq[0].value == ms->ms_bq[1].value) { 276 /* Must be 2 button presses! */ 277 ms->ms_bq[0].id = MS_MIDDLE; 278 ms->ms_bq_idx = 1; 279 rel_ms->id = 7; 280 } 281 } 282 else if (ms->ms_bq[0].value == VKEY_DOWN) { 283 callout_reset(&ms->ms_delay_ch, 10, 284 (FPV)ms_3b_delay, (void *)ms); 285 goto out; 286 } 287 flush_buttons = 1; 288 } 289 out: 290 if (flush_buttons) { 291 int i; 292 293 for (i = 0; i < ms->ms_bq_idx; i++) { 294 if ((++put) % EV_QSIZE == get) { 295 ms->ms_bq_idx = 0; 296 put--; 297 goto out; 298 } 299 *fe = ms->ms_bq[i]; 300 if (put >= EV_QSIZE) { 301 put = 0; 302 fe = &ms->ms_events.ev_q[0]; 303 } 304 else fe++; 305 } 306 ms->ms_bq_idx = 0; 307 } 308 ms->ms_events.ev_put = put; 309 ms->ms_buttons = rel_ms->id; 310 splx(sps); 311 EV_WAKEUP(&ms->ms_events); 312 } 313 314 int 315 msopen(dev_t dev, int flags, int mode, struct lwp *l) 316 { 317 u_char report_ms_joy[] = { 0x14, 0x08 }; 318 struct ms_softc *ms; 319 int unit; 320 321 unit = minor(dev); 322 ms = &ms_softc[unit]; 323 324 if (unit >= NMOUSE) 325 return(EXDEV); 326 327 if (ms->ms_events.ev_io) 328 return(EBUSY); 329 330 ms->ms_events.ev_io = l->l_proc; 331 ms->ms_dx = ms->ms_dy = 0; 332 ms->ms_buttons = 0; 333 ms->ms_bq[0].id = ms->ms_bq[1].id = 0; 334 ms->ms_bq_idx = 0; 335 ev_init(&ms->ms_events); /* may cause sleep */ 336 337 /* 338 * Enable mouse reporting. 339 */ 340 kbd_write(report_ms_joy, sizeof(report_ms_joy)); 341 return(0); 342 } 343 344 int 345 msclose(dev_t dev, int flags, int mode, struct lwp *l) 346 { 347 u_char disable_ms_joy[] = { 0x12, 0x1a }; 348 int unit; 349 struct ms_softc *ms; 350 351 unit = minor (dev); 352 ms = &ms_softc[unit]; 353 354 /* 355 * Turn off mouse interrogation. 356 */ 357 kbd_write(disable_ms_joy, sizeof(disable_ms_joy)); 358 ev_fini(&ms->ms_events); 359 ms->ms_events.ev_io = NULL; 360 return(0); 361 } 362 363 int 364 msread(dev_t dev, struct uio *uio, int flags) 365 { 366 struct ms_softc *ms; 367 368 ms = &ms_softc[minor(dev)]; 369 return(ev_read(&ms->ms_events, uio, flags)); 370 } 371 372 int 373 msioctl(dev_t dev, u_long cmd, register void * data, int flag, struct lwp *l) 374 { 375 struct ms_softc *ms; 376 int unit; 377 378 unit = minor(dev); 379 ms = &ms_softc[unit]; 380 381 switch (cmd) { 382 case MIOCS3B_EMUL: 383 ms->ms_emul3b = (*(int *)data != 0) ? 1 : 0; 384 return (0); 385 case MIOCG3B_EMUL: 386 *(int *)data = ms->ms_emul3b; 387 return (0); 388 case FIONBIO: /* we will remove this someday (soon???) */ 389 return(0); 390 case FIOASYNC: 391 ms->ms_events.ev_async = *(int *)data != 0; 392 return(0); 393 case FIOSETOWN: 394 if (-*(int *)data != ms->ms_events.ev_io->p_pgid 395 && *(int *)data != ms->ms_events.ev_io->p_pid) 396 return(EPERM); 397 return(0); 398 case TIOCSPGRP: 399 if (*(int *)data != ms->ms_events.ev_io->p_pgid) 400 return(EPERM); 401 return(0); 402 case VUIDGFORMAT: /* we only do firm_events */ 403 *(int *)data = VUID_FIRM_EVENT; 404 return(0); 405 case VUIDSFORMAT: 406 if (*(int *)data != VUID_FIRM_EVENT) 407 return(EINVAL); 408 return(0); 409 } 410 return(ENOTTY); 411 } 412 413 int 414 mspoll(dev_t dev, int events, struct lwp *l) 415 { 416 struct ms_softc *ms; 417 418 ms = &ms_softc[minor(dev)]; 419 return(ev_poll(&ms->ms_events, events, l)); 420 } 421 422 int 423 mskqfilter(dev_t dev, struct knote *kn) 424 { 425 struct ms_softc *ms; 426 427 ms = &ms_softc[minor(dev)]; 428 return (ev_kqfilter(&ms->ms_events, kn)); 429 } 430 #endif /* NMOUSE > 0 */ 431
Indexes created Sun Sep 21 20:09:37 GMT 2025