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kbd.c revision 1.24 
      1 /*	$NetBSD: kbd.c,v 1.24 2003/02/04 21:32:03 leo Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Leo Weppelman
      5  * Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. 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, Berkeley and its contributors.
     20  * 4. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  */
     36 
     37 #include "mouse.h"
     38 #include "ite.h"
     39 #include "wskbd.h"
     40 
     41 #include <sys/param.h>
     42 #include <sys/systm.h>
     43 #include <sys/device.h>
     44 #include <sys/ioctl.h>
     45 #include <sys/tty.h>
     46 #include <sys/proc.h>
     47 #include <sys/conf.h>
     48 #include <sys/file.h>
     49 #include <sys/kernel.h>
     50 #include <sys/signalvar.h>
     51 #include <sys/syslog.h>
     52 #include <dev/cons.h>
     53 #include <machine/cpu.h>
     54 #include <machine/iomap.h>
     55 #include <machine/mfp.h>
     56 #include <machine/acia.h>
     57 #include <atari/dev/itevar.h>
     58 #include <atari/dev/event_var.h>
     59 #include <atari/dev/vuid_event.h>
     60 #include <atari/dev/ym2149reg.h>
     61 #include <atari/dev/kbdreg.h>
     62 #include <atari/dev/kbdvar.h>
     63 #include <atari/dev/kbdmap.h>
     64 #include <atari/dev/msvar.h>
     65 
     66 #if NWSKBD>0
     67 #include <dev/wscons/wsconsio.h>
     68 #include <dev/wscons/wskbdvar.h>
     69 #include <dev/wscons/wsksymdef.h>
     70 #include <dev/wscons/wsksymvar.h>
     71 #include <atari/dev/wskbdmap_atari.h>
     72 #endif
     73 
     74 /* WSKBD */
     75 /*
     76  * If NWSKBD>0 we try to attach an wskbd device to us. What follows
     77  * is definitions of callback functions and structures that are passed
     78  * to wscons when initializing.
     79  */
     80 
     81 /*
     82  * Now with wscons this driver exhibits some weird behaviour.
     83  * It may act both as a driver of its own and the md part of the
     84  * wskbd driver. Therefore it can be accessed through /dev/kbd
     85  * and /dev/wskbd0 both.
     86  *
     87  * The data from they keyboard may end up in at least four different
     88  * places:
     89  * - If this driver has been opened (/dev/kbd) and the
     90  *   direct mode (TIOCDIRECT) has been set, data goes to
     91  *   the process who opened the device. Data will transmit itself
     92  *   as described by the firm_event structure.
     93  * - If wskbd support is compiled in and a wskbd driver has been
     94  *   attached then the data is sent to it. Wskbd in turn may
     95  *   - Send the data in the wscons_event form to a process that
     96  *     has opened /dev/wskbd0
     97  *   - Feed the data to a virtual terminal.
     98  * - If an ite is present the data may be fed to it.
     99  */
    100 
    101 u_char			kbd_modifier;	/* Modifier mask		*/
    102 
    103 static u_char		kbd_ring[KBD_RING_SIZE];
    104 static volatile u_int	kbd_rbput = 0;	/* 'put' index			*/
    105 static u_int		kbd_rbget = 0;	/* 'get' index			*/
    106 static u_char		kbd_soft  = 0;	/* 1: Softint has been scheduled*/
    107 
    108 static struct kbd_softc kbd_softc;
    109 
    110 /* {b,c}devsw[] function prototypes */
    111 dev_type_open(kbdopen);
    112 dev_type_close(kbdclose);
    113 dev_type_read(kbdread);
    114 dev_type_ioctl(kbdioctl);
    115 dev_type_poll(kbdpoll);
    116 dev_type_kqfilter(kbdkqfilter);
    117 
    118 /* Interrupt handler */
    119 void	kbdintr __P((int));
    120 
    121 static void kbdsoft __P((void *, void *));
    122 static void kbdattach __P((struct device *, struct device *, void *));
    123 static int  kbdmatch __P((struct device *, struct cfdata *, void *));
    124 #if NITE>0
    125 static int  kbd_do_modifier __P((u_char));
    126 #endif
    127 static int  kbd_write_poll __P((u_char *, int));
    128 static void kbd_pkg_start __P((struct kbd_softc *, u_char));
    129 
    130 CFATTACH_DECL(kbd, sizeof(struct device),
    131     kbdmatch, kbdattach, NULL, NULL);
    132 
    133 const struct cdevsw kbd_cdevsw = {
    134 	kbdopen, kbdclose, kbdread, nowrite, kbdioctl,
    135 	nostop, notty, kbdpoll, nommap, kbdkqfilter,
    136 };
    137 
    138 #if NWSKBD>0
    139 /* accessops */
    140 static int	kbd_enable(void *, int);
    141 static void	kbd_set_leds(void *, int);
    142 static int	kbd_ioctl(void *, u_long, caddr_t, int, struct proc *);
    143 
    144 /* console ops */
    145 static void	kbd_getc(void *, u_int *, int *);
    146 static void	kbd_pollc(void *, int);
    147 static void	kbd_bell(void *, u_int, u_int, u_int);
    148 
    149 static struct wskbd_accessops kbd_accessops = {
    150 	kbd_enable,
    151 	kbd_set_leds,
    152 	kbd_ioctl
    153 };
    154 
    155 static struct wskbd_consops kbd_consops = {
    156         kbd_getc,
    157 	kbd_pollc,
    158 	kbd_bell
    159 };
    160 
    161 /* Pointer to keymaps. */
    162 static struct wskbd_mapdata kbd_mapdata = {
    163         atarikbd_keydesctab,
    164 	KB_US
    165 };
    166 #endif /* WSKBD */
    167 
    168 /*ARGSUSED*/
    169 static	int
    170 kbdmatch(pdp, cfp, auxp)
    171 struct	device	*pdp;
    172 struct	cfdata	*cfp;
    173 void		*auxp;
    174 {
    175 	if (!strcmp((char *)auxp, "kbd"))
    176 		return (1);
    177 	return (0);
    178 }
    179 
    180 /*ARGSUSED*/
    181 static void
    182 kbdattach(pdp, dp, auxp)
    183 struct	device *pdp, *dp;
    184 void	*auxp;
    185 {
    186 	int	timeout;
    187 	u_char	kbd_rst[]  = { 0x80, 0x01 };
    188 	u_char	kbd_icmd[] = { 0x12, 0x15 };
    189 
    190 	/*
    191 	 * Disable keyboard interrupts from MFP
    192 	 */
    193 	MFP->mf_ierb &= ~IB_AINT;
    194 
    195 	/*
    196 	 * Reset ACIA and intialize to:
    197 	 *    divide by 16, 8 data, 1 stop, no parity, enable RX interrupts
    198 	 */
    199 	KBD->ac_cs = A_RESET;
    200 	delay(100);	/* XXX: enough? */
    201 	KBD->ac_cs = kbd_softc.k_soft_cs = KBD_INIT | A_RXINT;
    202 
    203 	/*
    204 	 * Clear error conditions
    205 	 */
    206 	while (KBD->ac_cs & (A_IRQ|A_RXRDY))
    207 		timeout = KBD->ac_da;
    208 
    209 	/*
    210 	 * Now send the reset string, and read+ignore it's response
    211 	 */
    212 	if (!kbd_write_poll(kbd_rst, 2))
    213 		printf("kbd: error cannot reset keyboard\n");
    214 	for (timeout = 1000; timeout > 0; timeout--) {
    215 		if (KBD->ac_cs & (A_IRQ|A_RXRDY)) {
    216 			timeout = KBD->ac_da;
    217 			timeout = 100;
    218 		}
    219 		delay(100);
    220 	}
    221 	/*
    222 	 * Send init command: disable mice & joysticks
    223 	 */
    224 	kbd_write_poll(kbd_icmd, sizeof(kbd_icmd));
    225 
    226 	printf("\n");
    227 
    228 #if NWSKBD>0
    229 	if (dp != NULL) {
    230 		/*
    231 		 * Try to attach the wskbd.
    232 		 */
    233 		struct wskbddev_attach_args waa;
    234 
    235 		/* Maybe should be done before this?... */
    236 		wskbd_cnattach(&kbd_consops, NULL, &kbd_mapdata);
    237 
    238 		waa.console = 1;
    239 		waa.keymap = &kbd_mapdata;
    240 		waa.accessops = &kbd_accessops;
    241 		waa.accesscookie = NULL;
    242 		kbd_softc.k_wskbddev = config_found(dp, &waa, wskbddevprint);
    243 
    244 		kbd_softc.k_pollingmode = 0;
    245 
    246 		kbdenable();
    247 	}
    248 #endif /* WSKBD */
    249 }
    250 
    251 void
    252 kbdenable()
    253 {
    254 	int	s, code;
    255 
    256 	s = spltty();
    257 
    258 	/*
    259 	 * Clear error conditions...
    260 	 */
    261 	while (KBD->ac_cs & (A_IRQ|A_RXRDY))
    262 		code = KBD->ac_da;
    263 	/*
    264 	 * Enable interrupts from MFP
    265 	 */
    266 	MFP->mf_iprb  = (u_int8_t)~IB_AINT;
    267 	MFP->mf_ierb |= IB_AINT;
    268 	MFP->mf_imrb |= IB_AINT;
    269 
    270 	kbd_softc.k_event_mode   = 0;
    271 	kbd_softc.k_events.ev_io = 0;
    272 	kbd_softc.k_pkg_size     = 0;
    273 	splx(s);
    274 }
    275 
    276 int kbdopen(dev_t dev, int flags, int mode, struct proc *p)
    277 {
    278 	if (kbd_softc.k_events.ev_io)
    279 		return EBUSY;
    280 
    281 	kbd_softc.k_events.ev_io = p;
    282 	ev_init(&kbd_softc.k_events);
    283 	return (0);
    284 }
    285 
    286 int
    287 kbdclose(dev_t dev, int flags, int mode, struct proc *p)
    288 {
    289 	/* Turn off event mode, dump the queue */
    290 	kbd_softc.k_event_mode = 0;
    291 	ev_fini(&kbd_softc.k_events);
    292 	kbd_softc.k_events.ev_io = NULL;
    293 	return (0);
    294 }
    295 
    296 int
    297 kbdread(dev_t dev, struct uio *uio, int flags)
    298 {
    299 	return ev_read(&kbd_softc.k_events, uio, flags);
    300 }
    301 
    302 int
    303 kbdioctl(dev_t dev,u_long cmd,register caddr_t data,int flag,struct proc *p)
    304 {
    305 	register struct kbd_softc *k = &kbd_softc;
    306 	struct kbdbell	*kb;
    307 
    308 	switch (cmd) {
    309 		case KIOCTRANS:
    310 			if (*(int *)data == TR_UNTRANS_EVENT)
    311 				return 0;
    312 			break;
    313 
    314 		case KIOCGTRANS:
    315 			/*
    316 			 * Get translation mode
    317 			 */
    318 			*(int *)data = TR_UNTRANS_EVENT;
    319 			return 0;
    320 
    321 		case KIOCSDIRECT:
    322 			k->k_event_mode = *(int *)data;
    323 			return 0;
    324 
    325 		case KIOCRINGBELL:
    326 			kb = (struct kbdbell *)data;
    327 			if (kb)
    328 				kbd_bell_sparms(kb->volume, kb->pitch,
    329 							kb->duration);
    330 			kbdbell();
    331 			return 0;
    332 
    333 		case FIONBIO:	/* we will remove this someday (soon???) */
    334 			return 0;
    335 
    336 		case FIOASYNC:
    337 			k->k_events.ev_async = *(int *)data != 0;
    338 				return 0;
    339 
    340 		case TIOCSPGRP:
    341 			if (*(int *)data != k->k_events.ev_io->p_pgid)
    342 				return EPERM;
    343 			return 0;
    344 
    345 		default:
    346 			return ENOTTY;
    347 	}
    348 
    349 	/*
    350 	 * We identified the ioctl, but we do not handle it.
    351 	 */
    352 	return EOPNOTSUPP;		/* misuse, but what the heck */
    353 }
    354 
    355 int
    356 kbdpoll (dev_t dev, int events, struct proc *p)
    357 {
    358   return ev_poll (&kbd_softc.k_events, events, p);
    359 }
    360 
    361 int
    362 kbdkqfilter(dev_t dev, struct knote *kn)
    363 {
    364 
    365 	return (ev_kqfilter(&kbd_softc.k_events, kn));
    366 }
    367 
    368 /*
    369  * Keyboard interrupt handler called straight from MFP at spl6.
    370  */
    371 void
    372 kbdintr(sr)
    373 int sr;	/* sr at time of interrupt	*/
    374 {
    375 	int	code;
    376 	int	got_char = 0;
    377 
    378 	/*
    379 	 * There may be multiple keys available. Read them all.
    380 	 */
    381 	while (KBD->ac_cs & (A_RXRDY|A_OE|A_PE)) {
    382 		got_char = 1;
    383 		if (KBD->ac_cs & (A_OE|A_PE)) {
    384 			code = KBD->ac_da;	/* Silently ignore errors */
    385 			continue;
    386 		}
    387 		kbd_ring[kbd_rbput++ & KBD_RING_MASK] = KBD->ac_da;
    388 	}
    389 
    390 	/*
    391 	 * If characters are waiting for transmit, send them.
    392 	 */
    393 	if ((kbd_softc.k_soft_cs & A_TXINT) && (KBD->ac_cs & A_TXRDY)) {
    394 		if (kbd_softc.k_sendp != NULL)
    395 			KBD->ac_da = *kbd_softc.k_sendp++;
    396 		if (--kbd_softc.k_send_cnt <= 0) {
    397 			/*
    398 			 * The total package has been transmitted,
    399 			 * wakeup anyone waiting for it.
    400 			 */
    401 			KBD->ac_cs = (kbd_softc.k_soft_cs &= ~A_TXINT);
    402 			kbd_softc.k_sendp    = NULL;
    403 			kbd_softc.k_send_cnt = 0;
    404 			wakeup((caddr_t)&kbd_softc.k_send_cnt);
    405 		}
    406 	}
    407 
    408 	/*
    409 	 * Activate software-level to handle possible input.
    410 	 */
    411 	if (got_char) {
    412 		if (!BASEPRI(sr)) {
    413 			if (!kbd_soft++)
    414 				add_sicallback(kbdsoft, 0, 0);
    415 		} else {
    416 			spl1();
    417 			kbdsoft(NULL, NULL);
    418 		}
    419 	}
    420 }
    421 
    422 /*
    423  * Keyboard soft interrupt handler
    424  */
    425 void
    426 kbdsoft(junk1, junk2)
    427 void	*junk1, *junk2;
    428 {
    429 	int			s;
    430 	u_char			code;
    431 	struct kbd_softc	*k = &kbd_softc;
    432 	struct firm_event	*fe;
    433 	int			put;
    434 	int			n, get;
    435 
    436 	kbd_soft = 0;
    437 	get      = kbd_rbget;
    438 
    439 	for (;;) {
    440 		n = kbd_rbput;
    441 		if (get == n) /* We're done	*/
    442 			break;
    443 		n -= get;
    444 		if (n > KBD_RING_SIZE) { /* Ring buffer overflow	*/
    445 			get += n - KBD_RING_SIZE;
    446 			n    = KBD_RING_SIZE;
    447 		}
    448 		while (--n >= 0) {
    449 			code = kbd_ring[get++ & KBD_RING_MASK];
    450 
    451 			/*
    452 			 * If collecting a package, stuff it in and
    453 			 * continue.
    454 			 */
    455 			if (k->k_pkg_size && (k->k_pkg_idx < k->k_pkg_size)) {
    456 			    k->k_package[k->k_pkg_idx++] = code;
    457 			    if (k->k_pkg_idx == k->k_pkg_size) {
    458 				/*
    459 				 * Package is complete.
    460 				 */
    461 				switch(k->k_pkg_type) {
    462 #if NMOUSE > 0
    463 				    case KBD_AMS_PKG:
    464 				    case KBD_RMS_PKG:
    465 				    case KBD_JOY1_PKG:
    466 			 		mouse_soft((REL_MOUSE *)k->k_package,
    467 						k->k_pkg_size, k->k_pkg_type);
    468 #endif /* NMOUSE */
    469 				}
    470 				k->k_pkg_size = 0;
    471 			    }
    472 			    continue;
    473 			}
    474 			/*
    475 			 * If this is a package header, init pkg. handling.
    476 			 */
    477 			if (!KBD_IS_KEY(code)) {
    478 				kbd_pkg_start(k, code);
    479 				continue;
    480 			}
    481 #if NWSKBD>0
    482 			/*
    483 			 * If we have attached a wskbd and not in polling mode and
    484 			 * nobody has opened us directly, then send the keystroke
    485 			 * to the wskbd.
    486 			 */
    487 
    488 			if (kbd_softc.k_pollingmode == 0
    489 			    && kbd_softc.k_wskbddev != NULL
    490 			    && k->k_event_mode == 0) {
    491 				wskbd_input(kbd_softc.k_wskbddev,
    492 					    KBD_RELEASED(code) ?
    493 					    WSCONS_EVENT_KEY_UP :
    494 					    WSCONS_EVENT_KEY_DOWN,
    495 					    KBD_SCANCODE(code));
    496 				continue;
    497 			}
    498 #endif /* NWSKBD */
    499 #if NITE>0
    500 			if (kbd_do_modifier(code) && !k->k_event_mode)
    501 				continue;
    502 #endif
    503 
    504 			/*
    505 			 * if not in event mode, deliver straight to ite to
    506 			 * process key stroke
    507 			 */
    508 			if (!k->k_event_mode) {
    509 				/* Gets to spltty() by itself	*/
    510 #if NITE>0
    511 				ite_filter(code, ITEFILT_TTY);
    512 #endif
    513 				continue;
    514 			}
    515 
    516 			/*
    517 			 * Keyboard is generating events.  Turn this keystroke
    518 			 * into an event and put it in the queue.  If the queue
    519 			 * is full, the keystroke is lost (sorry!).
    520 			 */
    521 			s = spltty();
    522 			put = k->k_events.ev_put;
    523 			fe  = &k->k_events.ev_q[put];
    524 			put = (put + 1) % EV_QSIZE;
    525 			if (put == k->k_events.ev_get) {
    526 				log(LOG_WARNING,
    527 					"keyboard event queue overflow\n");
    528 				splx(s);
    529 				continue;
    530 			}
    531 			fe->id    = KBD_SCANCODE(code);
    532 			fe->value = KBD_RELEASED(code) ? VKEY_UP : VKEY_DOWN;
    533 			fe->time  = time;
    534 			k->k_events.ev_put = put;
    535 			EV_WAKEUP(&k->k_events);
    536 			splx(s);
    537 		}
    538 		kbd_rbget = get;
    539 	}
    540 }
    541 
    542 static	u_char sound[] = {
    543 	0xA8,0x01,0xA9,0x01,0xAA,0x01,0x00,
    544 	0xF8,0x10,0x10,0x10,0x00,0x20,0x03
    545 };
    546 
    547 void
    548 kbdbell()
    549 {
    550 	register int	i, sps;
    551 
    552 	sps = splhigh();
    553 	for (i = 0; i < sizeof(sound); i++) {
    554 		YM2149->sd_selr = i;
    555 		YM2149->sd_wdat = sound[i];
    556 	}
    557 	splx(sps);
    558 }
    559 
    560 
    561 /*
    562  * Set the parameters of the 'default' beep.
    563  */
    564 
    565 #define KBDBELLCLOCK	125000	/* 2MHz / 16 */
    566 #define KBDBELLDURATION	128	/* 256 / 2MHz */
    567 
    568 void
    569 kbd_bell_gparms(volume, pitch, duration)
    570 	u_int	*volume, *pitch, *duration;
    571 {
    572 	u_int	tmp;
    573 
    574 	tmp = sound[11] | (sound[12] << 8);
    575 	*duration = (tmp * KBDBELLDURATION) / 1000;
    576 
    577 	tmp = sound[0] | (sound[1] << 8);
    578 	*pitch = KBDBELLCLOCK / tmp;
    579 
    580 	*volume = 0;
    581 }
    582 
    583 void
    584 kbd_bell_sparms(volume, pitch, duration)
    585 	u_int	volume, pitch, duration;
    586 {
    587 	u_int	f, t;
    588 
    589 	f = pitch > 10 ? pitch : 10;	/* minimum pitch */
    590 	if (f > 20000)
    591 		f = 20000;		/* maximum pitch */
    592 
    593 	f = KBDBELLCLOCK / f;
    594 
    595 	t = (duration * 1000) / KBDBELLDURATION;
    596 
    597 	sound[ 0] = f & 0xff;
    598 	sound[ 1] = (f >> 8) & 0xf;
    599 	f -= 1;
    600 	sound[ 2] = f & 0xff;
    601 	sound[ 3] = (f >> 8) & 0xf;
    602 	f += 2;
    603 	sound[ 4] = f & 0xff;
    604 	sound[ 5] = (f >> 8) & 0xf;
    605 
    606 	sound[11] = t & 0xff;
    607 	sound[12] = (t >> 8) & 0xff;
    608 
    609 	sound[13] = 0x03;
    610 }
    611 
    612 int
    613 kbdgetcn()
    614 {
    615 	u_char	code;
    616 	int	s = spltty();
    617 	int	ints_active;
    618 
    619 	ints_active = 0;
    620 	if (MFP->mf_imrb & IB_AINT) {
    621 		ints_active   = 1;
    622 		MFP->mf_imrb &= ~IB_AINT;
    623 	}
    624 	for (;;) {
    625 		while (!((KBD->ac_cs & (A_IRQ|A_RXRDY)) == (A_IRQ|A_RXRDY)))
    626 			;	/* Wait for key	*/
    627 		if (KBD->ac_cs & (A_OE|A_PE)) {
    628 			code = KBD->ac_da;	/* Silently ignore errors */
    629 			continue;
    630 		}
    631 		code = KBD->ac_da;
    632 #if NITE>0
    633 		if (!kbd_do_modifier(code))
    634 #endif
    635 			break;
    636 	}
    637 
    638 	if (ints_active) {
    639 		MFP->mf_iprb  = (u_int8_t)~IB_AINT;
    640 		MFP->mf_imrb |=  IB_AINT;
    641 	}
    642 
    643 	splx (s);
    644 	return code;
    645 }
    646 
    647 /*
    648  * Write a command to the keyboard in 'polled' mode.
    649  */
    650 static int
    651 kbd_write_poll(cmd, len)
    652 u_char	*cmd;
    653 int	len;
    654 {
    655 	int	timeout;
    656 
    657 	while (len-- > 0) {
    658 		KBD->ac_da = *cmd++;
    659 		for (timeout = 100; !(KBD->ac_cs & A_TXRDY); timeout--)
    660 			delay(10);
    661 		if (!(KBD->ac_cs & A_TXRDY))
    662 			return (0);
    663 	}
    664 	return (1);
    665 }
    666 
    667 /*
    668  * Write a command to the keyboard. Return when command is send.
    669  */
    670 void
    671 kbd_write(cmd, len)
    672 u_char	*cmd;
    673 int	len;
    674 {
    675 	struct kbd_softc	*k = &kbd_softc;
    676 	int			sps;
    677 
    678 	/*
    679 	 * Get to splhigh, 'real' interrupts arrive at spl6!
    680 	 */
    681 	sps = splhigh();
    682 
    683 	/*
    684 	 * Make sure any privious write has ended...
    685 	 */
    686 	while (k->k_sendp != NULL)
    687 		tsleep((caddr_t)&k->k_sendp, TTOPRI, "kbd_write1", 0);
    688 
    689 	/*
    690 	 * If the KBD-acia is not currently busy, send the first
    691 	 * character now.
    692 	 */
    693 	KBD->ac_cs = (k->k_soft_cs |= A_TXINT);
    694 	if (KBD->ac_cs & A_TXRDY) {
    695 		KBD->ac_da = *cmd++;
    696 		len--;
    697 	}
    698 
    699 	/*
    700 	 * If we're not yet done, wait until all characters are send.
    701 	 */
    702 	if (len > 0) {
    703 		k->k_sendp    = cmd;
    704 		k->k_send_cnt = len;
    705 		tsleep((caddr_t)&k->k_send_cnt, TTOPRI, "kbd_write2", 0);
    706 	}
    707 	splx(sps);
    708 
    709 	/*
    710 	 * Wakeup all procs waiting for us.
    711 	 */
    712 	wakeup((caddr_t)&k->k_sendp);
    713 }
    714 
    715 /*
    716  * Setup softc-fields to assemble a keyboard package.
    717  */
    718 static void
    719 kbd_pkg_start(kp, msg_start)
    720 struct kbd_softc *kp;
    721 u_char		 msg_start;
    722 {
    723 	kp->k_pkg_idx    = 1;
    724 	kp->k_package[0] = msg_start;
    725 	switch (msg_start) {
    726 		case 0xf6:
    727 			kp->k_pkg_type = KBD_MEM_PKG;
    728 			kp->k_pkg_size = 8;
    729 			break;
    730 		case 0xf7:
    731 			kp->k_pkg_type = KBD_AMS_PKG;
    732 			kp->k_pkg_size = 6;
    733 			break;
    734 		case 0xf8:
    735 		case 0xf9:
    736 		case 0xfa:
    737 		case 0xfb:
    738 			kp->k_pkg_type = KBD_RMS_PKG;
    739 			kp->k_pkg_size = 3;
    740 			break;
    741 		case 0xfc:
    742 			kp->k_pkg_type = KBD_CLK_PKG;
    743 			kp->k_pkg_size = 7;
    744 			break;
    745 		case 0xfe:
    746 			kp->k_pkg_type = KBD_JOY0_PKG;
    747 			kp->k_pkg_size = 2;
    748 			break;
    749 		case 0xff:
    750 			kp->k_pkg_type = KBD_JOY1_PKG;
    751 			kp->k_pkg_size = 2;
    752 			break;
    753 		default:
    754 			printf("kbd: Unknown packet 0x%x\n", msg_start);
    755 			break;
    756 	}
    757 }
    758 
    759 #if NITE>0
    760 /*
    761  * Modifier processing
    762  */
    763 static int
    764 kbd_do_modifier(code)
    765 u_char	code;
    766 {
    767 	u_char	up, mask;
    768 
    769 	up   = KBD_RELEASED(code);
    770 	mask = 0;
    771 
    772 	switch(KBD_SCANCODE(code)) {
    773 		case KBD_LEFT_SHIFT:
    774 			mask = KBD_MOD_LSHIFT;
    775 			break;
    776 		case KBD_RIGHT_SHIFT:
    777 			mask = KBD_MOD_RSHIFT;
    778 			break;
    779 		case KBD_CTRL:
    780 			mask = KBD_MOD_CTRL;
    781 			break;
    782 		case KBD_ALT:
    783 			mask = KBD_MOD_ALT;
    784 			break;
    785 		case KBD_CAPS_LOCK:
    786 			/* CAPSLOCK is a toggle */
    787 			if(!up)
    788 				kbd_modifier ^= KBD_MOD_CAPS;
    789 			return 1;
    790 	}
    791 	if(mask) {
    792 		if(up)
    793 			kbd_modifier &= ~mask;
    794 		else
    795 			kbd_modifier |= mask;
    796 		return 1;
    797 	}
    798 	return 0;
    799 }
    800 #endif
    801 
    802 #if NWSKBD>0
    803 /*
    804  * These are the callback functions that are passed to wscons.
    805  * They really don't do anything worth noting, just call the
    806  * other functions above.
    807  */
    808 
    809 static int
    810 kbd_enable(void *c, int on)
    811 {
    812         /* Wonder what this is supposed to do... */
    813 	return 0;
    814 }
    815 
    816 static void
    817 kbd_set_leds(void *c, int leds)
    818 {
    819         /* we can not set the leds */
    820 }
    821 
    822 static int
    823 kbd_ioctl(void *c, u_long cmd, caddr_t data, int flag, struct proc *p)
    824 {
    825 	struct wskbd_bell_data *kd;
    826 
    827 	switch (cmd)
    828 	{
    829 	case WSKBDIO_COMPLEXBELL:
    830 		kd = (struct wskbd_bell_data *)data;
    831 		kbd_bell(0, kd->pitch, kd->period, kd->volume);
    832 		return 0;
    833 	case WSKBDIO_SETLEDS:
    834 		return 0;
    835 	case WSKBDIO_GETLEDS:
    836 		*(int*)data = 0;
    837 		return 0;
    838 	case WSKBDIO_GTYPE:
    839 		*(u_int*)data = WSKBD_TYPE_ATARI;
    840 		return 0;
    841 	}
    842 
    843 	/*
    844 	 * We are supposed to return EPASSTHROUGH to wscons if we didn't
    845 	 * understand.
    846 	 */
    847 	return (EPASSTHROUGH);
    848 }
    849 
    850 static void
    851 kbd_getc(void *c, u_int *type, int *data)
    852 {
    853 	int key;
    854 	key = kbdgetcn();
    855 
    856 	*data = KBD_SCANCODE(key);
    857 	*type = KBD_RELEASED(key) ? WSCONS_EVENT_KEY_UP : WSCONS_EVENT_KEY_DOWN;
    858 }
    859 
    860 static void
    861 kbd_pollc(void *c, int on)
    862 {
    863         kbd_softc.k_pollingmode = on;
    864 }
    865 
    866 static void
    867 kbd_bell(void *v, u_int pitch, u_int duration, u_int volume)
    868 {
    869         kbd_bell_sparms(volume, pitch, duration);
    870 	kbdbell();
    871 }
    872 #endif /* NWSKBD */
    873