1/* $NetBSD: kbd.c,v 1.36 2009/01/17 03:26:31 isaki Exp $ */ 2 3/* 4 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD: kbd.c,v 1.36 2009/01/17 03:26:31 isaki Exp $"); 34 35#include "ite.h" 36#include "bell.h" 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/device.h> 41#include <sys/ioctl.h> 42#include <sys/tty.h> 43#include <sys/proc.h> 44#include <sys/conf.h> 45#include <sys/file.h> 46#include <sys/uio.h> 47#include <sys/kernel.h> 48#include <sys/syslog.h> 49#include <sys/signalvar.h> 50#include <sys/cpu.h> 51#include <sys/bus.h> 52#include <sys/intr.h> 53 54#include <arch/x68k/dev/intiovar.h> 55#include <arch/x68k/dev/mfp.h> 56#include <arch/x68k/dev/itevar.h> 57 58/* for sun-like event mode, if you go thru /dev/kbd. */ 59#include <arch/x68k/dev/event_var.h> 60 61#include <machine/kbio.h> 62#include <machine/kbd.h> 63#include <machine/vuid_event.h> 64 65struct kbd_softc { 66 int sc_event_mode; /* if true, collect events, else pass to ite */ 67 struct evvar sc_events; /* event queue state */ 68 void *sc_softintr_cookie; 69}; 70 71void kbdenable(int); 72int kbdintr(void *); 73void kbdsoftint(void *); 74void kbd_bell(int); 75int kbdcngetc(void); 76void kbd_setLED(void); 77int kbd_send_command(int); 78 79 80static int kbdmatch(device_t, cfdata_t, void *); 81static void kbdattach(device_t, device_t, void *); 82 83CFATTACH_DECL_NEW(kbd, sizeof(struct kbd_softc), 84 kbdmatch, kbdattach, NULL, NULL); 85 86static int kbd_attached; 87 88dev_type_open(kbdopen); 89dev_type_close(kbdclose); 90dev_type_read(kbdread); 91dev_type_ioctl(kbdioctl); 92dev_type_poll(kbdpoll); 93dev_type_kqfilter(kbdkqfilter); 94 95const struct cdevsw kbd_cdevsw = { 96 kbdopen, kbdclose, kbdread, nowrite, kbdioctl, 97 nostop, notty, kbdpoll, nommap, kbdkqfilter, 98}; 99 100static int 101kbdmatch(device_t parent, cfdata_t cf, void *aux) 102{ 103 104 if (strcmp(aux, "kbd") != 0) 105 return (0); 106 if (kbd_attached) 107 return (0); 108 109 return (1); 110} 111 112static void 113kbdattach(device_t parent, device_t self, void *aux) 114{ 115 struct kbd_softc *sc = device_private(self); 116 struct mfp_softc *mfp = device_private(parent); 117 int s; 118 119 kbd_attached = 1; 120 121 s = spltty(); 122 123 /* MFP interrupt #12 is for USART receive buffer full */ 124 intio_intr_establish(mfp->sc_intr + 12, "kbd", kbdintr, sc); 125 sc->sc_softintr_cookie = softint_establish(SOFTINT_SERIAL, 126 kbdsoftint, sc); 127 128 kbdenable(1); 129 sc->sc_event_mode = 0; 130 sc->sc_events.ev_io = 0; 131 splx(s); 132 133 aprint_normal("\n"); 134} 135 136 137/* definitions for x68k keyboard encoding. */ 138#define KEY_CODE(c) ((c) & 0x7f) 139#define KEY_UP(c) ((c) & 0x80) 140 141void 142kbdenable(int mode) /* 1: interrupt, 0: poll */ 143{ 144 145 intio_set_sysport_keyctrl(8); 146 mfp_bit_clear_iera(MFP_INTR_RCV_FULL | MFP_INTR_TIMER_B); 147 mfp_set_tbcr(MFP_TIMERB_RESET | MFP_TIMERB_STOP); 148 mfp_set_tbdr(13); /* Timer B interrupt interval */ 149 mfp_set_tbcr(1); /* 1/4 delay mode */ 150 mfp_set_ucr(MFP_UCR_CLKX16 | MFP_UCR_RW_8 | MFP_UCR_ONESB); 151 mfp_set_rsr(MFP_RSR_RE); /* USART receive enable */ 152 mfp_set_tsr(MFP_TSR_TE); /* USART transmit enable */ 153 154 if (mode) { 155 mfp_bit_set_iera(MFP_INTR_RCV_FULL); 156 /* 157 * Perform null read in case that an input byte is in the 158 * receiver buffer, which prevents further interrupts. 159 * We could save the input, but probably not so valuable. 160 */ 161 (void) mfp_get_udr(); 162 } 163 164 kbdled = 0; /* all keyboard LED turn off. */ 165 kbd_setLED(); 166 167 if (!(intio_get_sysport_keyctrl() & 8)) 168 aprint_normal(" (no connected keyboard)"); 169} 170 171extern struct cfdriver kbd_cd; 172 173int 174kbdopen(dev_t dev, int flags, int mode, struct lwp *l) 175{ 176 struct kbd_softc *k; 177 178 k = device_lookup_private(&kbd_cd, minor(dev)); 179 if (k == NULL) 180 return (ENXIO); 181 182 if (k->sc_events.ev_io) 183 return (EBUSY); 184 k->sc_events.ev_io = l->l_proc; 185 ev_init(&k->sc_events); 186 187 return (0); 188} 189 190int 191kbdclose(dev_t dev, int flags, int mode, struct lwp *l) 192{ 193 struct kbd_softc *k = device_lookup_private(&kbd_cd, minor(dev)); 194 195 /* Turn off event mode, dump the queue */ 196 k->sc_event_mode = 0; 197 ev_fini(&k->sc_events); 198 k->sc_events.ev_io = NULL; 199 200 return (0); 201} 202 203 204int 205kbdread(dev_t dev, struct uio *uio, int flags) 206{ 207 struct kbd_softc *k = device_lookup_private(&kbd_cd, minor(dev)); 208 209 return ev_read(&k->sc_events, uio, flags); 210} 211 212#if NBELL > 0 213struct bell_info; 214int opm_bell_setup(struct bell_info *); 215void opm_bell_on(void); 216void opm_bell_off(void); 217#endif 218 219int 220kbdioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 221{ 222 struct kbd_softc *k = device_lookup_private(&kbd_cd, minor(dev)); 223 int cmd_data; 224 225 switch (cmd) { 226 case KIOCTRANS: 227 if (*(int *)data == TR_UNTRANS_EVENT) 228 return (0); 229 break; 230 231 case KIOCGTRANS: 232 /* 233 * Get translation mode 234 */ 235 *(int *)data = TR_UNTRANS_EVENT; 236 return (0); 237 238 case KIOCSDIRECT: 239 k->sc_event_mode = *(int *)data; 240 return (0); 241 242 case KIOCCMD: 243 cmd_data = *(int *)data; 244 return kbd_send_command(cmd_data); 245 246 case KIOCSLED: 247 kbdled = *(char *)data; 248 kbd_setLED(); 249 return (0); 250 251 case KIOCGLED: 252 *(char *)data = kbdled; 253 return (0); 254 255 case KIOCSBELL: 256#if NBELL > 0 257 return opm_bell_setup((struct bell_info *)data); 258#else 259 return (0); /* always success */ 260#endif 261 262 case FIONBIO: /* we will remove this someday (soon???) */ 263 return (0); 264 265 case FIOASYNC: 266 k->sc_events.ev_async = *(int *)data != 0; 267 return (0); 268 269 case FIOSETOWN: 270 if (-*(int *)data != k->sc_events.ev_io->p_pgid 271 && *(int *)data != k->sc_events.ev_io->p_pid) 272 return (EPERM); 273 return 0; 274 275 case TIOCSPGRP: 276 if (*(int *)data != k->sc_events.ev_io->p_pgid) 277 return (EPERM); 278 return (0); 279 280 default: 281 return (ENOTTY); 282 } 283 284 /* 285 * We identified the ioctl, but we do not handle it. 286 */ 287 return (EOPNOTSUPP); /* misuse, but what the heck */ 288} 289 290 291int 292kbdpoll(dev_t dev, int events, struct lwp *l) 293{ 294 struct kbd_softc *k; 295 296 k = device_lookup_private(&kbd_cd, minor(dev)); 297 return (ev_poll(&k->sc_events, events, l)); 298} 299 300int 301kbdkqfilter(dev_t dev, struct knote *kn) 302{ 303 struct kbd_softc *k; 304 305 k = device_lookup_private(&kbd_cd, minor(dev)); 306 return (ev_kqfilter(&k->sc_events, kn)); 307} 308 309#define KBDBUFMASK 63 310#define KBDBUFSIZ 64 311static u_char kbdbuf[KBDBUFSIZ]; 312static int kbdputoff = 0; 313static int kbdgetoff = 0; 314 315int 316kbdintr(void *arg) 317{ 318 u_char c, st; 319 struct kbd_softc *sc = arg; 320 struct firm_event *fe; 321 int put; 322 323 /* clear receiver error if any */ 324 st = mfp_get_rsr(); 325 326 c = mfp_get_udr(); 327 328 if ((st & MFP_RSR_BF) == 0) 329 return 0; /* intr caused by an err -- no char received */ 330 331 /* if not in event mode, deliver straight to ite to process key stroke */ 332 if (!sc->sc_event_mode) { 333 kbdbuf[kbdputoff++ & KBDBUFMASK] = c; 334 softint_schedule(sc->sc_softintr_cookie); 335 return 0; 336 } 337 338 /* Keyboard is generating events. Turn this keystroke into an 339 event and put it in the queue. If the queue is full, the 340 keystroke is lost (sorry!). */ 341 342 put = sc->sc_events.ev_put; 343 fe = &sc->sc_events.ev_q[put]; 344 put = (put + 1) % EV_QSIZE; 345 if (put == sc->sc_events.ev_get) { 346 log(LOG_WARNING, "keyboard event queue overflow\n"); /* ??? */ 347 return 0; 348 } 349 fe->id = KEY_CODE(c); 350 fe->value = KEY_UP(c) ? VKEY_UP : VKEY_DOWN; 351 firm_gettime(fe); 352 sc->sc_events.ev_put = put; 353 softint_schedule(sc->sc_softintr_cookie); 354 355 return 0; 356} 357 358void 359kbdsoftint(void *arg) /* what if ite is not configured? */ 360{ 361 struct kbd_softc *sc = arg; 362 int s; 363 364 s = spltty(); 365 366 if (sc->sc_event_mode) 367 EV_WAKEUP(&sc->sc_events); 368 369 while(kbdgetoff < kbdputoff) 370 ite_filter(kbdbuf[kbdgetoff++ & KBDBUFMASK]); 371 kbdgetoff = kbdputoff = 0; 372 373 splx(s); 374} 375 376void 377kbd_bell(int mode) 378{ 379#if NBELL > 0 380 if (mode) 381 opm_bell_on(); 382 else 383 opm_bell_off(); 384#endif 385} 386 387unsigned char kbdled; 388 389void 390kbd_setLED(void) 391{ 392 mfp_send_usart(~kbdled | 0x80); 393} 394 395int 396kbd_send_command(int cmd) 397{ 398 switch (cmd) { 399 case KBD_CMD_RESET: 400 /* XXX */ 401 return 0; 402 403 case KBD_CMD_BELL: 404 kbd_bell(1); 405 return 0; 406 407 case KBD_CMD_NOBELL: 408 kbd_bell(0); 409 return 0; 410 411 default: 412 return ENOTTY; 413 } 414} 415 416/* 417 * for console 418 */ 419#if NITE > 0 420int 421kbdcngetc(void) 422{ 423 int s; 424 u_char ints, c; 425 426 s = splhigh(); 427 ints = mfp_get_iera(); 428 429 mfp_bit_clear_iera(MFP_INTR_RCV_FULL); 430 mfp_set_rsr(mfp_get_rsr() | MFP_RSR_RE); 431 c = mfp_receive_usart(); 432 433 mfp_set_iera(ints); 434 splx(s); 435 436 return c; 437} 438#endif 439