ms.c revision 1.5
1 /* $NetBSD: ms.c,v 1.5 1996/04/12 08:39:22 leo 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. All advertising materials mentioning features or use of this software 30 * must display the following acknowledgement: 31 * This product includes software developed by the University of 32 * California, Berkeley and its contributors. 33 * 4. Neither the name of the University nor the names of its contributors 34 * may be used to endorse or promote products derived from this software 35 * without specific prior written permission. 36 * 37 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 38 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 39 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 40 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 41 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 42 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 43 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 45 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 46 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 47 * SUCH DAMAGE. 48 * 49 * @(#)ms.c 8.1 (Berkeley) 6/11/93 50 * 51 * Header: ms.c,v 1.5 92/11/26 01:28:47 torek Exp (LBL) 52 */ 53 54 /* 55 * Mouse driver. 56 */ 57 58 #include <sys/param.h> 59 #include <sys/conf.h> 60 #include <sys/ioctl.h> 61 #include <sys/kernel.h> 62 #include <sys/proc.h> 63 #include <sys/systm.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) __P((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_select(msselect); 91 92 static void ms_3b_delay __P((struct ms_softc *)); 93 94 int 95 mouseattach(cnt) 96 int cnt; 97 { 98 printf("1 mouse configured\n"); 99 ms_softc[0].ms_emul3b = 1; 100 return(NMOUSE); 101 } 102 103 static void 104 ms_3b_delay(ms) 105 struct ms_softc *ms; 106 { 107 REL_MOUSE rel_ms; 108 109 rel_ms.id = TIMEOUT_ID; 110 rel_ms.dx = rel_ms.dy = 0; 111 mouse_soft(&rel_ms, sizeof(rel_ms), KBD_TIMEO_PKG); 112 } 113 /* 114 * Note that we are called from the keyboard software interrupt! 115 */ 116 void 117 mouse_soft(rel_ms, size, type) 118 REL_MOUSE *rel_ms; 119 int size, type; 120 { 121 struct ms_softc *ms = &ms_softc[0]; 122 struct firm_event *fe, *fe2; 123 REL_MOUSE fake_mouse; 124 int get, put; 125 int sps; 126 u_char mbut, bmask; 127 int flush_buttons; 128 129 if (ms->ms_events.ev_io == NULL) 130 return; 131 132 switch (type) { 133 case KBD_JOY1_PKG: 134 /* 135 * There are some mice that have their middle button 136 * wired to the 'up' bit of joystick 1.... 137 * Simulate a mouse packet with dx = dy = 0, the middle 138 * button state set by UP and the other buttons unchanged. 139 * Flush all button changes. 140 */ 141 flush_buttons = 1; 142 fake_mouse.id = (rel_ms->dx & 1 ? 4 : 0) | (ms->ms_buttons & 3); 143 fake_mouse.dx = fake_mouse.dy = 0; 144 rel_ms = &fake_mouse; 145 break; 146 case KBD_TIMEO_PKG: 147 /* 148 * Timeout package. No button changes and no movement. 149 * Flush all button changes. 150 */ 151 flush_buttons = 1; 152 fake_mouse.id = ms->ms_buttons; 153 fake_mouse.dx = fake_mouse.dy = 0; 154 rel_ms = &fake_mouse; 155 break; 156 case KBD_RMS_PKG: 157 /* 158 * Normal mouse package. Always copy the middle button 159 * status. The emulation code decides if button changes 160 * must be flushed. 161 */ 162 rel_ms->id = (ms->ms_buttons & 4) | (rel_ms->id & 3); 163 flush_buttons = (ms->ms_emul3b) ? 0 : 1; 164 break; 165 default: 166 return; 167 } 168 169 sps = splev(); 170 get = ms->ms_events.ev_get; 171 put = ms->ms_events.ev_put; 172 fe = &ms->ms_events.ev_q[put]; 173 174 if ((type != KBD_TIMEO_PKG) && ms->ms_emul3b && ms->ms_bq_idx) 175 untimeout((FPV)ms_3b_delay, (void *)ms); 176 177 /* 178 * Button states are encoded in the lower 3 bits of 'id' 179 */ 180 if (!(mbut = (rel_ms->id ^ ms->ms_buttons)) && (put != get)) { 181 /* 182 * Compact dx/dy messages. Always generate an event when 183 * a button is pressed or the event queue is empty. 184 */ 185 ms->ms_dx += rel_ms->dx; 186 ms->ms_dy += rel_ms->dy; 187 goto out; 188 } 189 rel_ms->dx += ms->ms_dx; 190 rel_ms->dy += ms->ms_dy; 191 ms->ms_dx = ms->ms_dy = 0; 192 193 /* 194 * Output location events _before_ button events ie. make sure 195 * the button is pressed at the correct location. 196 */ 197 if (rel_ms->dx) { 198 if ((++put) % EV_QSIZE == get) { 199 put--; 200 goto out; 201 } 202 fe->id = LOC_X_DELTA; 203 fe->value = rel_ms->dx; 204 fe->time = time; 205 if (put >= EV_QSIZE) { 206 put = 0; 207 fe = &ms->ms_events.ev_q[0]; 208 } 209 else fe++; 210 } 211 if (rel_ms->dy) { 212 if ((++put) % EV_QSIZE == get) { 213 put--; 214 goto out; 215 } 216 fe->id = LOC_Y_DELTA; 217 fe->value = rel_ms->dy; 218 fe->time = time; 219 if (put >= EV_QSIZE) { 220 put = 0; 221 fe = &ms->ms_events.ev_q[0]; 222 } 223 else fe++; 224 } 225 if (mbut && (type != KBD_TIMEO_PKG)) { 226 for (bmask = 1; bmask < 0x08; bmask <<= 1) { 227 if (!(mbut & bmask)) 228 continue; 229 fe2 = &ms->ms_bq[ms->ms_bq_idx++]; 230 if (bmask == 1) 231 fe2->id = MS_RIGHT; 232 else if (bmask == 2) 233 fe2->id = MS_LEFT; 234 else fe2->id = MS_MIDDLE; 235 fe2->value = rel_ms->id & bmask ? VKEY_DOWN : VKEY_UP; 236 fe2->time = time; 237 } 238 } 239 240 /* 241 * Handle 3rd button emulation. 242 */ 243 if (ms->ms_emul3b && ms->ms_bq_idx && (type != KBD_TIMEO_PKG)) { 244 /* 245 * If the middle button is pressed, any change to 246 * one of the other buttons releases all. 247 */ 248 if ((ms->ms_buttons & 4) && (mbut & 3)) { 249 ms->ms_bq[0].id = MS_MIDDLE; 250 ms->ms_bq_idx = 1; 251 rel_ms->id = 0; 252 flush_buttons = 1; 253 goto out; 254 } 255 if (ms->ms_bq_idx == 2) { 256 if (ms->ms_bq[0].value == ms->ms_bq[1].value) { 257 /* Must be 2 button presses! */ 258 ms->ms_bq[0].id = MS_MIDDLE; 259 ms->ms_bq_idx = 1; 260 rel_ms->id = 7; 261 } 262 } 263 else if (ms->ms_bq[0].value == VKEY_DOWN) { 264 timeout((FPV)ms_3b_delay, (void *)ms, 10); 265 goto out; 266 } 267 flush_buttons = 1; 268 } 269 out: 270 if (flush_buttons) { 271 int i; 272 273 for (i = 0; i < ms->ms_bq_idx; i++) { 274 if ((++put) % EV_QSIZE == get) { 275 ms->ms_bq_idx = 0; 276 put--; 277 goto out; 278 } 279 *fe = ms->ms_bq[i]; 280 if (put >= EV_QSIZE) { 281 put = 0; 282 fe = &ms->ms_events.ev_q[0]; 283 } 284 else fe++; 285 } 286 ms->ms_bq_idx = 0; 287 } 288 ms->ms_events.ev_put = put; 289 ms->ms_buttons = rel_ms->id; 290 splx(sps); 291 EV_WAKEUP(&ms->ms_events); 292 } 293 294 int 295 msopen(dev, flags, mode, p) 296 dev_t dev; 297 int flags, mode; 298 struct proc *p; 299 { 300 u_char report_ms_joy[] = { 0x14, 0x08 }; 301 struct ms_softc *ms; 302 int unit; 303 304 unit = minor(dev); 305 ms = &ms_softc[unit]; 306 307 if (unit >= NMOUSE) 308 return(EXDEV); 309 310 if (ms->ms_events.ev_io) 311 return(EBUSY); 312 313 ms->ms_events.ev_io = p; 314 ms->ms_dx = ms->ms_dy = 0; 315 ms->ms_buttons = 0; 316 ms->ms_bq[0].id = ms->ms_bq[1].id = 0; 317 ms->ms_bq_idx = 0; 318 ev_init(&ms->ms_events); /* may cause sleep */ 319 320 /* 321 * Enable mouse reporting. 322 */ 323 kbd_write(report_ms_joy, sizeof(report_ms_joy)); 324 return(0); 325 } 326 327 int 328 msclose(dev, flags, mode, p) 329 dev_t dev; 330 int flags, mode; 331 struct proc *p; 332 { 333 u_char disable_ms_joy[] = { 0x12, 0x1a }; 334 int unit; 335 struct ms_softc *ms; 336 337 unit = minor (dev); 338 ms = &ms_softc[unit]; 339 340 /* 341 * Turn off mouse interrogation. 342 */ 343 kbd_write(disable_ms_joy, sizeof(disable_ms_joy)); 344 ev_fini(&ms->ms_events); 345 ms->ms_events.ev_io = NULL; 346 return(0); 347 } 348 349 int 350 msread(dev, uio, flags) 351 dev_t dev; 352 struct uio *uio; 353 int flags; 354 { 355 struct ms_softc *ms; 356 357 ms = &ms_softc[minor(dev)]; 358 return(ev_read(&ms->ms_events, uio, flags)); 359 } 360 361 int 362 msioctl(dev, cmd, data, flag, p) 363 dev_t dev; 364 u_long cmd; 365 register caddr_t data; 366 int flag; 367 struct proc *p; 368 { 369 struct ms_softc *ms; 370 int unit; 371 372 unit = minor(dev); 373 ms = &ms_softc[unit]; 374 375 switch (cmd) { 376 case MIOCS3B_EMUL: 377 ms->ms_emul3b = (*(int *)data != 0) ? 1 : 0; 378 return (0); 379 case MIOCG3B_EMUL: 380 *(int *)data = ms->ms_emul3b; 381 return (0); 382 case FIONBIO: /* we will remove this someday (soon???) */ 383 return(0); 384 case FIOASYNC: 385 ms->ms_events.ev_async = *(int *)data != 0; 386 return(0); 387 case TIOCSPGRP: 388 if (*(int *)data != ms->ms_events.ev_io->p_pgid) 389 return(EPERM); 390 return(0); 391 case VUIDGFORMAT: /* we only do firm_events */ 392 *(int *)data = VUID_FIRM_EVENT; 393 return(0); 394 case VUIDSFORMAT: 395 if (*(int *)data != VUID_FIRM_EVENT) 396 return(EINVAL); 397 return(0); 398 } 399 return(ENOTTY); 400 } 401 402 int 403 msselect(dev, rw, p) 404 dev_t dev; 405 int rw; 406 struct proc *p; 407 { 408 struct ms_softc *ms; 409 410 ms = &ms_softc[minor(dev)]; 411 return(ev_select(&ms->ms_events, rw, p)); 412 } 413 #endif /* NMOUSE > 0 */ 414
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