1 /* $NetBSD: opms.c,v 1.3 2001/09/28 11:59:51 chs Exp $ */ 2 /* $OpenBSD: pccons.c,v 1.22 1999/01/30 22:39:37 imp Exp $ */ 3 /* NetBSD: pms.c,v 1.21 1995/04/18 02:25:18 mycroft Exp */ 4 5 /*- 6 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. All rights reserved. 7 * Copyright (c) 1990 The Regents of the University of California. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * William Jolitz and Don Ahn. 12 * 13 * Copyright (c) 1994 Charles M. Hannum. 14 * Copyright (c) 1992, 1993 Erik Forsberg. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * @(#)pccons.c 5.11 (Berkeley) 5/21/91 45 */ 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/vnode.h> 50 #include <sys/poll.h> 51 #include <sys/tty.h> 52 #include <sys/device.h> 53 #include <sys/proc.h> 54 55 #include <machine/bus.h> 56 #include <machine/kbdreg.h> 57 #include <machine/mouse.h> 58 59 #include <arc/dev/pcconsvar.h> 60 #include <arc/dev/opmsvar.h> 61 62 #define PMSUNIT(dev) (minor(dev)) 63 64 /* status bits */ 65 #define PMS_OBUF_FULL 0x01 66 #define PMS_IBUF_FULL 0x02 67 68 /* controller commands */ 69 #define PMS_INT_ENABLE 0x47 /* enable controller interrupts */ 70 #define PMS_INT_DISABLE 0x65 /* disable controller interrupts */ 71 #define PMS_AUX_ENABLE 0xa7 /* enable auxiliary port */ 72 #define PMS_AUX_DISABLE 0xa8 /* disable auxiliary port */ 73 #define PMS_MAGIC_1 0xa9 /* XXX */ 74 75 #define PMS_8042_CMD 0x65 76 77 /* mouse commands */ 78 #define PMS_SET_SCALE11 0xe6 /* set scaling 1:1 */ 79 #define PMS_SET_SCALE21 0xe7 /* set scaling 2:1 */ 80 #define PMS_SET_RES 0xe8 /* set resolution */ 81 #define PMS_GET_SCALE 0xe9 /* get scaling factor */ 82 #define PMS_SET_STREAM 0xea /* set streaming mode */ 83 #define PMS_SET_SAMPLE 0xf3 /* set sampling rate */ 84 #define PMS_DEV_ENABLE 0xf4 /* mouse on */ 85 #define PMS_DEV_DISABLE 0xf5 /* mouse off */ 86 #define PMS_RESET 0xff /* reset */ 87 88 #define PMS_CHUNK 128 /* chunk size for read */ 89 #define PMS_BSIZE 1020 /* buffer size */ 90 91 #define FLUSHQ(q) { if((q)->c_cc) ndflush(q, (q)->c_cc); } 92 93 extern struct cfdriver opms_cd; 94 95 int opmsopen __P((dev_t, int)); 96 int opmsclose __P((dev_t, int)); 97 int opmsread __P((dev_t, struct uio *, int)); 98 int opmsioctl __P((dev_t, u_long, caddr_t, int)); 99 int opmsselect __P((dev_t, int, struct proc *)); 100 int opmspoll __P((dev_t, int, struct proc *)); 101 static __inline void pms_dev_cmd __P((u_char)); 102 static __inline void pms_aux_cmd __P((u_char)); 103 static __inline void pms_pit_cmd __P((u_char)); 104 105 static __inline void 106 pms_dev_cmd(value) 107 u_char value; 108 { 109 kbd_flush_input(); 110 kbd_cmd_write_1(0xd4); 111 kbd_flush_input(); 112 kbd_data_write_1(value); 113 } 114 115 static __inline void 116 pms_aux_cmd(value) 117 u_char value; 118 { 119 kbd_flush_input(); 120 kbd_cmd_write_1(value); 121 } 122 123 static __inline void 124 pms_pit_cmd(value) 125 u_char value; 126 { 127 kbd_flush_input(); 128 kbd_cmd_write_1(0x60); 129 kbd_flush_input(); 130 kbd_data_write_1(value); 131 } 132 133 int opms_common_match(kbd_iot, config) 134 bus_space_tag_t kbd_iot; 135 struct pccons_config *config; 136 { 137 u_char x; 138 139 kbd_context_init(kbd_iot, config); 140 141 pms_dev_cmd(KBC_RESET); 142 pms_aux_cmd(PMS_MAGIC_1); 143 delay(10000); 144 x = kbd_data_read_1(); 145 pms_pit_cmd(PMS_INT_DISABLE); 146 if (x & 0x04) 147 return 0; 148 149 return 1; 150 } 151 152 void 153 opms_common_attach(sc, opms_iot, config) 154 struct opms_softc *sc; 155 bus_space_tag_t opms_iot; 156 struct pccons_config *config; 157 { 158 kbd_context_init(opms_iot, config); 159 160 /* Other initialization was done by opmsprobe. */ 161 sc->sc_state = 0; 162 } 163 164 int 165 opmsopen(dev, flag) 166 dev_t dev; 167 int flag; 168 { 169 int unit = PMSUNIT(dev); 170 struct opms_softc *sc; 171 172 if (unit >= opms_cd.cd_ndevs) 173 return ENXIO; 174 sc = opms_cd.cd_devs[unit]; 175 if (!sc) 176 return ENXIO; 177 178 if (sc->sc_state & PMS_OPEN) 179 return EBUSY; 180 181 if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1) 182 return ENOMEM; 183 184 sc->sc_state |= PMS_OPEN; 185 sc->sc_status = 0; 186 sc->sc_x = sc->sc_y = 0; 187 188 /* Enable interrupts. */ 189 pms_dev_cmd(PMS_DEV_ENABLE); 190 pms_aux_cmd(PMS_AUX_ENABLE); 191 pms_dev_cmd(PMS_SET_RES); 192 pms_dev_cmd(3); /* 8 counts/mm */ 193 pms_dev_cmd(PMS_SET_SCALE21); 194 #if 0 195 pms_dev_cmd(PMS_SET_SAMPLE); 196 pms_dev_cmd(100); /* 100 samples/sec */ 197 pms_dev_cmd(PMS_SET_STREAM); 198 #endif 199 pms_pit_cmd(PMS_INT_ENABLE); 200 201 return 0; 202 } 203 204 int 205 opmsclose(dev, flag) 206 dev_t dev; 207 int flag; 208 { 209 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 210 211 /* Disable interrupts. */ 212 pms_dev_cmd(PMS_DEV_DISABLE); 213 pms_pit_cmd(PMS_INT_DISABLE); 214 pms_aux_cmd(PMS_AUX_DISABLE); 215 216 sc->sc_state &= ~PMS_OPEN; 217 218 clfree(&sc->sc_q); 219 220 return 0; 221 } 222 223 int 224 opmsread(dev, uio, flag) 225 dev_t dev; 226 struct uio *uio; 227 int flag; 228 { 229 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 230 int s; 231 int error = 0; 232 size_t length; 233 u_char buffer[PMS_CHUNK]; 234 235 /* Block until mouse activity occurred. */ 236 237 s = spltty(); 238 while (sc->sc_q.c_cc == 0) { 239 if (flag & IO_NDELAY) { 240 splx(s); 241 return EWOULDBLOCK; 242 } 243 sc->sc_state |= PMS_ASLP; 244 error = tsleep((caddr_t)sc, PZERO | PCATCH, "pmsrea", 0); 245 if (error) { 246 sc->sc_state &= ~PMS_ASLP; 247 splx(s); 248 return error; 249 } 250 } 251 splx(s); 252 253 /* Transfer as many chunks as possible. */ 254 255 while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0) { 256 length = min(sc->sc_q.c_cc, uio->uio_resid); 257 if (length > sizeof(buffer)) 258 length = sizeof(buffer); 259 260 /* Remove a small chunk from the input queue. */ 261 (void) q_to_b(&sc->sc_q, buffer, length); 262 263 /* Copy the data to the user process. */ 264 error = uiomove(buffer, length, uio); 265 if (error) 266 break; 267 } 268 269 return error; 270 } 271 272 int 273 opmsioctl(dev, cmd, addr, flag) 274 dev_t dev; 275 u_long cmd; 276 caddr_t addr; 277 int flag; 278 { 279 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 280 struct mouseinfo info; 281 int s; 282 int error; 283 284 switch (cmd) { 285 case MOUSEIOCREAD: 286 s = spltty(); 287 288 info.status = sc->sc_status; 289 if (sc->sc_x || sc->sc_y) 290 info.status |= MOVEMENT; 291 292 if (sc->sc_x > 127) 293 info.xmotion = 127; 294 else if (sc->sc_x < -127) 295 /* Bounding at -127 avoids a bug in XFree86. */ 296 info.xmotion = -127; 297 else 298 info.xmotion = sc->sc_x; 299 300 if (sc->sc_y > 127) 301 info.ymotion = 127; 302 else if (sc->sc_y < -127) 303 info.ymotion = -127; 304 else 305 info.ymotion = sc->sc_y; 306 307 /* Reset historical information. */ 308 sc->sc_x = sc->sc_y = 0; 309 sc->sc_status &= ~BUTCHNGMASK; 310 ndflush(&sc->sc_q, sc->sc_q.c_cc); 311 312 splx(s); 313 error = copyout(&info, addr, sizeof(struct mouseinfo)); 314 break; 315 default: 316 error = EINVAL; 317 break; 318 } 319 320 return error; 321 } 322 323 /* Masks for the first byte of a packet */ 324 #define PS2LBUTMASK 0x01 325 #define PS2RBUTMASK 0x02 326 #define PS2MBUTMASK 0x04 327 328 int 329 opmsintr(arg) 330 void *arg; 331 { 332 struct opms_softc *sc = arg; 333 static int state = 0; 334 static u_char buttons; 335 u_char changed; 336 static char dx, dy; 337 u_char buffer[5]; 338 339 if ((sc->sc_state & PMS_OPEN) == 0) { 340 /* Interrupts are not expected. Discard the byte. */ 341 kbd_flush_input(); 342 return 0; 343 } 344 345 switch (state) { 346 347 case 0: 348 buttons = kbd_data_read_1(); 349 if ((buttons & 0xc0) == 0) 350 ++state; 351 break; 352 353 case 1: 354 dx = kbd_data_read_1(); 355 /* Bounding at -127 avoids a bug in XFree86. */ 356 dx = (dx == -128) ? -127 : dx; 357 ++state; 358 break; 359 360 case 2: 361 dy = kbd_data_read_1(); 362 dy = (dy == -128) ? -127 : dy; 363 state = 0; 364 365 buttons = ((buttons & PS2LBUTMASK) << 2) | 366 ((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1); 367 changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3; 368 sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) | changed; 369 370 if (dx || dy || changed) { 371 /* Update accumulated movements. */ 372 sc->sc_x += dx; 373 sc->sc_y += dy; 374 375 /* Add this event to the queue. */ 376 buffer[0] = 0x80 | (buttons & BUTSTATMASK); 377 if(dx < 0) 378 buffer[0] |= 0x10; 379 buffer[1] = dx & 0x7f; 380 if(dy < 0) 381 buffer[0] |= 0x20; 382 buffer[2] = dy & 0x7f; 383 buffer[3] = buffer[4] = 0; 384 (void) b_to_q(buffer, sizeof buffer, &sc->sc_q); 385 386 if (sc->sc_state & PMS_ASLP) { 387 sc->sc_state &= ~PMS_ASLP; 388 wakeup((caddr_t)sc); 389 } 390 selwakeup(&sc->sc_rsel); 391 } 392 393 break; 394 } 395 return -1; 396 } 397 398 int 399 opmspoll(dev, events, p) 400 dev_t dev; 401 int events; 402 struct proc *p; 403 { 404 struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)]; 405 int revents = 0; 406 int s = spltty(); 407 408 if (events & (POLLIN | POLLRDNORM)) { 409 if (sc->sc_q.c_cc > 0) 410 revents |= events & (POLLIN | POLLRDNORM); 411 else 412 selrecord(p, &sc->sc_rsel); 413 } 414 415 splx(s); 416 return (revents); 417 } 418