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kbd.c revision 1.36 
      1 /*	$NetBSD: kbd.c,v 1.36 2009/03/18 10:22:24 cegger 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. Neither the name of the University nor the names of its contributors
     17  *    may be used to endorse or promote products derived from this software
     18  *    without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: kbd.c,v 1.36 2009/03/18 10:22:24 cegger Exp $");
     35 
     36 #include "mouse.h"
     37 #include "ite.h"
     38 #include "wskbd.h"
     39 
     40 #include <sys/param.h>
     41 #include <sys/systm.h>
     42 #include <sys/device.h>
     43 #include <sys/ioctl.h>
     44 #include <sys/tty.h>
     45 #include <sys/proc.h>
     46 #include <sys/conf.h>
     47 #include <sys/file.h>
     48 #include <sys/kernel.h>
     49 #include <sys/signalvar.h>
     50 #include <sys/syslog.h>
     51 #include <dev/cons.h>
     52 #include <machine/cpu.h>
     53 #include <machine/iomap.h>
     54 #include <machine/mfp.h>
     55 #include <machine/acia.h>
     56 #include <atari/dev/itevar.h>
     57 #include <atari/dev/event_var.h>
     58 #include <atari/dev/vuid_event.h>
     59 #include <atari/dev/ym2149reg.h>
     60 #include <atari/dev/kbdreg.h>
     61 #include <atari/dev/kbdvar.h>
     62 #include <atari/dev/kbdmap.h>
     63 #include <atari/dev/msvar.h>
     64 
     65 #if NWSKBD>0
     66 #include <dev/wscons/wsconsio.h>
     67 #include <dev/wscons/wskbdvar.h>
     68 #include <dev/wscons/wsksymdef.h>
     69 #include <dev/wscons/wsksymvar.h>
     70 #include <atari/dev/wskbdmap_atari.h>
     71 #endif
     72 
     73 /* WSKBD */
     74 /*
     75  * If NWSKBD>0 we try to attach an wskbd device to us. What follows
     76  * is definitions of callback functions and structures that are passed
     77  * to wscons when initializing.
     78  */
     79 
     80 /*
     81  * Now with wscons this driver exhibits some weird behaviour.
     82  * It may act both as a driver of its own and the md part of the
     83  * wskbd driver. Therefore it can be accessed through /dev/kbd
     84  * and /dev/wskbd0 both.
     85  *
     86  * The data from they keyboard may end up in at least four different
     87  * places:
     88  * - If this driver has been opened (/dev/kbd) and the
     89  *   direct mode (TIOCDIRECT) has been set, data goes to
     90  *   the process who opened the device. Data will transmit itself
     91  *   as described by the firm_event structure.
     92  * - If wskbd support is compiled in and a wskbd driver has been
     93  *   attached then the data is sent to it. Wskbd in turn may
     94  *   - Send the data in the wscons_event form to a process that
     95  *     has opened /dev/wskbd0
     96  *   - Feed the data to a virtual terminal.
     97  * - If an ite is present the data may be fed to it.
     98  */
     99 
    100 u_char			kbd_modifier;	/* Modifier mask		*/
    101 
    102 static u_char		kbd_ring[KBD_RING_SIZE];
    103 static volatile u_int	kbd_rbput = 0;	/* 'put' index			*/
    104 static u_int		kbd_rbget = 0;	/* 'get' index			*/
    105 static u_char		kbd_soft  = 0;	/* 1: Softint has been scheduled*/
    106 
    107 static struct kbd_softc kbd_softc;
    108 
    109 /* {b,c}devsw[] function prototypes */
    110 dev_type_open(kbdopen);
    111 dev_type_close(kbdclose);
    112 dev_type_read(kbdread);
    113 dev_type_ioctl(kbdioctl);
    114 dev_type_poll(kbdpoll);
    115 dev_type_kqfilter(kbdkqfilter);
    116 
    117 /* Interrupt handler */
    118 void	kbdintr(int);
    119 
    120 static void kbdsoft(void *, void *);
    121 static void kbdattach(struct device *, struct device *, void *);
    122 static int  kbdmatch(struct device *, struct cfdata *, void *);
    123 #if NITE>0
    124 static int  kbd_do_modifier(u_char);
    125 #endif
    126 static int  kbd_write_poll(u_char *, int);
    127 static void kbd_pkg_start(struct kbd_softc *, u_char);
    128 
    129 CFATTACH_DECL(kbd, sizeof(struct device),
    130     kbdmatch, kbdattach, NULL, NULL);
    131 
    132 const struct cdevsw kbd_cdevsw = {
    133 	kbdopen, kbdclose, kbdread, nowrite, kbdioctl,
    134 	nostop, notty, kbdpoll, nommap, kbdkqfilter,
    135 };
    136 
    137 #if NWSKBD>0
    138 /* accessops */
    139 static int	kbd_enable(void *, int);
    140 static void	kbd_set_leds(void *, int);
    141 static int	kbd_ioctl(void *, u_long, void *, int, struct lwp *);
    142 
    143 /* console ops */
    144 static void	kbd_getc(void *, u_int *, int *);
    145 static void	kbd_pollc(void *, int);
    146 static void	kbd_bell(void *, u_int, u_int, u_int);
    147 
    148 static struct wskbd_accessops kbd_accessops = {
    149 	kbd_enable,
    150 	kbd_set_leds,
    151 	kbd_ioctl
    152 };
    153 
    154 static struct wskbd_consops kbd_consops = {
    155         kbd_getc,
    156 	kbd_pollc,
    157 	kbd_bell
    158 };
    159 
    160 /* Pointer to keymaps. */
    161 static struct wskbd_mapdata kbd_mapdata = {
    162         atarikbd_keydesctab,
    163 	KB_US
    164 };
    165 #endif /* WSKBD */
    166 
    167 /*ARGSUSED*/
    168 static	int
    169 kbdmatch(struct device *pdp, struct cfdata *cfp, void *auxp)
    170 {
    171 	if (!strcmp((char *)auxp, "kbd"))
    172 		return (1);
    173 	return (0);
    174 }
    175 
    176 /*ARGSUSED*/
    177 static void
    178 kbdattach(struct device *pdp, struct device *dp, void *auxp)
    179 {
    180 	int	timeout;
    181 	u_char	kbd_rst[]  = { 0x80, 0x01 };
    182 	u_char	kbd_icmd[] = { 0x12, 0x15 };
    183 
    184 	/*
    185 	 * Disable keyboard interrupts from MFP
    186 	 */
    187 	MFP->mf_ierb &= ~IB_AINT;
    188 
    189 	/*
    190 	 * Reset ACIA and intialize to:
    191 	 *    divide by 16, 8 data, 1 stop, no parity, enable RX interrupts
    192 	 */
    193 	KBD->ac_cs = A_RESET;
    194 	delay(100);	/* XXX: enough? */
    195 	KBD->ac_cs = kbd_softc.k_soft_cs = KBD_INIT | A_RXINT;
    196 
    197 	/*
    198 	 * Clear error conditions
    199 	 */
    200 	while (KBD->ac_cs & (A_IRQ|A_RXRDY))
    201 		timeout = KBD->ac_da;
    202 
    203 	/*
    204 	 * Now send the reset string, and read+ignore it's response
    205 	 */
    206 	if (!kbd_write_poll(kbd_rst, 2))
    207 		printf("kbd: error cannot reset keyboard\n");
    208 	for (timeout = 1000; timeout > 0; timeout--) {
    209 		if (KBD->ac_cs & (A_IRQ|A_RXRDY)) {
    210 			timeout = KBD->ac_da;
    211 			timeout = 100;
    212 		}
    213 		delay(100);
    214 	}
    215 	/*
    216 	 * Send init command: disable mice & joysticks
    217 	 */
    218 	kbd_write_poll(kbd_icmd, sizeof(kbd_icmd));
    219 
    220 	printf("\n");
    221 
    222 #if NWSKBD>0
    223 	if (dp != NULL) {
    224 		/*
    225 		 * Try to attach the wskbd.
    226 		 */
    227 		struct wskbddev_attach_args waa;
    228 
    229 		/* Maybe should be done before this?... */
    230 		wskbd_cnattach(&kbd_consops, NULL, &kbd_mapdata);
    231 
    232 		waa.console = 1;
    233 		waa.keymap = &kbd_mapdata;
    234 		waa.accessops = &kbd_accessops;
    235 		waa.accesscookie = NULL;
    236 		kbd_softc.k_wskbddev = config_found(dp, &waa, wskbddevprint);
    237 
    238 		kbd_softc.k_pollingmode = 0;
    239 
    240 		kbdenable();
    241 	}
    242 #endif /* WSKBD */
    243 }
    244 
    245 void
    246 kbdenable(void)
    247 {
    248 	int	s, code;
    249 
    250 	s = spltty();
    251 
    252 	/*
    253 	 * Clear error conditions...
    254 	 */
    255 	while (KBD->ac_cs & (A_IRQ|A_RXRDY))
    256 		code = KBD->ac_da;
    257 	/*
    258 	 * Enable interrupts from MFP
    259 	 */
    260 	MFP->mf_iprb  = (u_int8_t)~IB_AINT;
    261 	MFP->mf_ierb |= IB_AINT;
    262 	MFP->mf_imrb |= IB_AINT;
    263 
    264 	kbd_softc.k_event_mode   = 0;
    265 	kbd_softc.k_events.ev_io = 0;
    266 	kbd_softc.k_pkg_size     = 0;
    267 	splx(s);
    268 }
    269 
    270 int kbdopen(dev_t dev, int flags, int mode, struct lwp *l)
    271 {
    272 	if (kbd_softc.k_events.ev_io)
    273 		return EBUSY;
    274 
    275 	kbd_softc.k_events.ev_io = l->l_proc;
    276 	ev_init(&kbd_softc.k_events);
    277 	return (0);
    278 }
    279 
    280 int
    281 kbdclose(dev_t dev, int flags, int mode, struct lwp *l)
    282 {
    283 	/* Turn off event mode, dump the queue */
    284 	kbd_softc.k_event_mode = 0;
    285 	ev_fini(&kbd_softc.k_events);
    286 	kbd_softc.k_events.ev_io = NULL;
    287 	return (0);
    288 }
    289 
    290 int
    291 kbdread(dev_t dev, struct uio *uio, int flags)
    292 {
    293 	return ev_read(&kbd_softc.k_events, uio, flags);
    294 }
    295 
    296 int
    297 kbdioctl(dev_t dev,u_long cmd,register void *data,int flag,struct lwp *l)
    298 {
    299 	register struct kbd_softc *k = &kbd_softc;
    300 	struct kbdbell	*kb;
    301 
    302 	switch (cmd) {
    303 		case KIOCTRANS:
    304 			if (*(int *)data == TR_UNTRANS_EVENT)
    305 				return 0;
    306 			break;
    307 
    308 		case KIOCGTRANS:
    309 			/*
    310 			 * Get translation mode
    311 			 */
    312 			*(int *)data = TR_UNTRANS_EVENT;
    313 			return 0;
    314 
    315 		case KIOCSDIRECT:
    316 			k->k_event_mode = *(int *)data;
    317 			return 0;
    318 
    319 		case KIOCRINGBELL:
    320 			kb = (struct kbdbell *)data;
    321 			if (kb)
    322 				kbd_bell_sparms(kb->volume, kb->pitch,
    323 							kb->duration);
    324 			kbdbell();
    325 			return 0;
    326 
    327 		case FIONBIO:	/* we will remove this someday (soon???) */
    328 			return 0;
    329 
    330 		case FIOASYNC:
    331 			k->k_events.ev_async = *(int *)data != 0;
    332 				return 0;
    333 
    334 		case FIOSETOWN:
    335 			if (-*(int *)data != k->k_events.ev_io->p_pgid
    336 			    && *(int *)data != k->k_events.ev_io->p_pid)
    337 				return EPERM;
    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 lwp *l)
    357 {
    358   return ev_poll (&kbd_softc.k_events, events, l);
    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(int sr)
    373 	/* 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((void *)&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(void *junk1, void *junk2)
    427 {
    428 	int			s;
    429 	u_char			code;
    430 	struct kbd_softc	*k = &kbd_softc;
    431 	struct firm_event	*fe;
    432 	int			put;
    433 	int			n, get;
    434 
    435 	kbd_soft = 0;
    436 	get      = kbd_rbget;
    437 
    438 	for (;;) {
    439 		n = kbd_rbput;
    440 		if (get == n) /* We're done	*/
    441 			break;
    442 		n -= get;
    443 		if (n > KBD_RING_SIZE) { /* Ring buffer overflow	*/
    444 			get += n - KBD_RING_SIZE;
    445 			n    = KBD_RING_SIZE;
    446 		}
    447 		while (--n >= 0) {
    448 			code = kbd_ring[get++ & KBD_RING_MASK];
    449 
    450 			/*
    451 			 * If collecting a package, stuff it in and
    452 			 * continue.
    453 			 */
    454 			if (k->k_pkg_size && (k->k_pkg_idx < k->k_pkg_size)) {
    455 			    k->k_package[k->k_pkg_idx++] = code;
    456 			    if (k->k_pkg_idx == k->k_pkg_size) {
    457 				/*
    458 				 * Package is complete.
    459 				 */
    460 				switch(k->k_pkg_type) {
    461 #if NMOUSE > 0
    462 				    case KBD_AMS_PKG:
    463 				    case KBD_RMS_PKG:
    464 				    case KBD_JOY1_PKG:
    465 			 		mouse_soft((REL_MOUSE *)k->k_package,
    466 						k->k_pkg_size, k->k_pkg_type);
    467 #endif /* NMOUSE */
    468 				}
    469 				k->k_pkg_size = 0;
    470 			    }
    471 			    continue;
    472 			}
    473 			/*
    474 			 * If this is a package header, init pkg. handling.
    475 			 */
    476 			if (!KBD_IS_KEY(code)) {
    477 				kbd_pkg_start(k, code);
    478 				continue;
    479 			}
    480 #if NWSKBD>0
    481 			/*
    482 			 * If we have attached a wskbd and not in polling mode and
    483 			 * nobody has opened us directly, then send the keystroke
    484 			 * to the wskbd.
    485 			 */
    486 
    487 			if (kbd_softc.k_pollingmode == 0
    488 			    && kbd_softc.k_wskbddev != NULL
    489 			    && k->k_event_mode == 0) {
    490 				wskbd_input(kbd_softc.k_wskbddev,
    491 					    KBD_RELEASED(code) ?
    492 					    WSCONS_EVENT_KEY_UP :
    493 					    WSCONS_EVENT_KEY_DOWN,
    494 					    KBD_SCANCODE(code));
    495 				continue;
    496 			}
    497 #endif /* NWSKBD */
    498 #if NITE>0
    499 			if (kbd_do_modifier(code) && !k->k_event_mode)
    500 				continue;
    501 #endif
    502 
    503 			/*
    504 			 * if not in event mode, deliver straight to ite to
    505 			 * process key stroke
    506 			 */
    507 			if (!k->k_event_mode) {
    508 				/* Gets to spltty() by itself	*/
    509 #if NITE>0
    510 				ite_filter(code, ITEFILT_TTY);
    511 #endif
    512 				continue;
    513 			}
    514 
    515 			/*
    516 			 * Keyboard is generating events.  Turn this keystroke
    517 			 * into an event and put it in the queue.  If the queue
    518 			 * is full, the keystroke is lost (sorry!).
    519 			 */
    520 			s = spltty();
    521 			put = k->k_events.ev_put;
    522 			fe  = &k->k_events.ev_q[put];
    523 			put = (put + 1) % EV_QSIZE;
    524 			if (put == k->k_events.ev_get) {
    525 				log(LOG_WARNING,
    526 					"keyboard event queue overflow\n");
    527 				splx(s);
    528 				continue;
    529 			}
    530 			fe->id    = KBD_SCANCODE(code);
    531 			fe->value = KBD_RELEASED(code) ? VKEY_UP : VKEY_DOWN;
    532 			firm_gettime(fe);
    533 			k->k_events.ev_put = put;
    534 			EV_WAKEUP(&k->k_events);
    535 			splx(s);
    536 		}
    537 		kbd_rbget = get;
    538 	}
    539 }
    540 
    541 static	u_char sound[] = {
    542 	0xA8,0x01,0xA9,0x01,0xAA,0x01,0x00,
    543 	0xF8,0x10,0x10,0x10,0x00,0x20,0x03
    544 };
    545 
    546 void
    547 kbdbell(void)
    548 {
    549 	register int	i, sps;
    550 
    551 	sps = splhigh();
    552 	for (i = 0; i < sizeof(sound); i++) {
    553 		YM2149->sd_selr = i;
    554 		YM2149->sd_wdat = sound[i];
    555 	}
    556 	splx(sps);
    557 }
    558 
    559 
    560 /*
    561  * Set the parameters of the 'default' beep.
    562  */
    563 
    564 #define KBDBELLCLOCK	125000	/* 2MHz / 16 */
    565 #define KBDBELLDURATION	128	/* 256 / 2MHz */
    566 
    567 void
    568 kbd_bell_gparms(u_int *volume, u_int *pitch, u_int *duration)
    569 {
    570 	u_int	tmp;
    571 
    572 	tmp = sound[11] | (sound[12] << 8);
    573 	*duration = (tmp * KBDBELLDURATION) / 1000;
    574 
    575 	tmp = sound[0] | (sound[1] << 8);
    576 	*pitch = KBDBELLCLOCK / tmp;
    577 
    578 	*volume = 0;
    579 }
    580 
    581 void
    582 kbd_bell_sparms(u_int volume, u_int pitch, u_int duration)
    583 {
    584 	u_int	f, t;
    585 
    586 	f = pitch > 10 ? pitch : 10;	/* minimum pitch */
    587 	if (f > 20000)
    588 		f = 20000;		/* maximum pitch */
    589 
    590 	f = KBDBELLCLOCK / f;
    591 
    592 	t = (duration * 1000) / KBDBELLDURATION;
    593 
    594 	sound[ 0] = f & 0xff;
    595 	sound[ 1] = (f >> 8) & 0xf;
    596 	f -= 1;
    597 	sound[ 2] = f & 0xff;
    598 	sound[ 3] = (f >> 8) & 0xf;
    599 	f += 2;
    600 	sound[ 4] = f & 0xff;
    601 	sound[ 5] = (f >> 8) & 0xf;
    602 
    603 	sound[11] = t & 0xff;
    604 	sound[12] = (t >> 8) & 0xff;
    605 
    606 	sound[13] = 0x03;
    607 }
    608 
    609 int
    610 kbdgetcn(void)
    611 {
    612 	u_char	code;
    613 	int	s = spltty();
    614 	int	ints_active;
    615 
    616 	ints_active = 0;
    617 	if (MFP->mf_imrb & IB_AINT) {
    618 		ints_active   = 1;
    619 		MFP->mf_imrb &= ~IB_AINT;
    620 	}
    621 	for (;;) {
    622 		while (!((KBD->ac_cs & (A_IRQ|A_RXRDY)) == (A_IRQ|A_RXRDY)))
    623 			;	/* Wait for key	*/
    624 		if (KBD->ac_cs & (A_OE|A_PE)) {
    625 			code = KBD->ac_da;	/* Silently ignore errors */
    626 			continue;
    627 		}
    628 		code = KBD->ac_da;
    629 #if NITE>0
    630 		if (!kbd_do_modifier(code))
    631 #endif
    632 			break;
    633 	}
    634 
    635 	if (ints_active) {
    636 		MFP->mf_iprb  = (u_int8_t)~IB_AINT;
    637 		MFP->mf_imrb |=  IB_AINT;
    638 	}
    639 
    640 	splx (s);
    641 	return code;
    642 }
    643 
    644 /*
    645  * Write a command to the keyboard in 'polled' mode.
    646  */
    647 static int
    648 kbd_write_poll(u_char *cmd, int len)
    649 {
    650 	int	timeout;
    651 
    652 	while (len-- > 0) {
    653 		KBD->ac_da = *cmd++;
    654 		for (timeout = 100; !(KBD->ac_cs & A_TXRDY); timeout--)
    655 			delay(10);
    656 		if (!(KBD->ac_cs & A_TXRDY))
    657 			return (0);
    658 	}
    659 	return (1);
    660 }
    661 
    662 /*
    663  * Write a command to the keyboard. Return when command is send.
    664  */
    665 void
    666 kbd_write(u_char *cmd, int len)
    667 {
    668 	struct kbd_softc	*k = &kbd_softc;
    669 	int			sps;
    670 
    671 	/*
    672 	 * Get to splhigh, 'real' interrupts arrive at spl6!
    673 	 */
    674 	sps = splhigh();
    675 
    676 	/*
    677 	 * Make sure any privious write has ended...
    678 	 */
    679 	while (k->k_sendp != NULL)
    680 		tsleep((void *)&k->k_sendp, TTOPRI, "kbd_write1", 0);
    681 
    682 	/*
    683 	 * If the KBD-acia is not currently busy, send the first
    684 	 * character now.
    685 	 */
    686 	KBD->ac_cs = (k->k_soft_cs |= A_TXINT);
    687 	if (KBD->ac_cs & A_TXRDY) {
    688 		KBD->ac_da = *cmd++;
    689 		len--;
    690 	}
    691 
    692 	/*
    693 	 * If we're not yet done, wait until all characters are send.
    694 	 */
    695 	if (len > 0) {
    696 		k->k_sendp    = cmd;
    697 		k->k_send_cnt = len;
    698 		tsleep((void *)&k->k_send_cnt, TTOPRI, "kbd_write2", 0);
    699 	}
    700 	splx(sps);
    701 
    702 	/*
    703 	 * Wakeup all procs waiting for us.
    704 	 */
    705 	wakeup((void *)&k->k_sendp);
    706 }
    707 
    708 /*
    709  * Setup softc-fields to assemble a keyboard package.
    710  */
    711 static void
    712 kbd_pkg_start(struct kbd_softc *kp, u_char msg_start)
    713 {
    714 	kp->k_pkg_idx    = 1;
    715 	kp->k_package[0] = msg_start;
    716 	switch (msg_start) {
    717 		case 0xf6:
    718 			kp->k_pkg_type = KBD_MEM_PKG;
    719 			kp->k_pkg_size = 8;
    720 			break;
    721 		case 0xf7:
    722 			kp->k_pkg_type = KBD_AMS_PKG;
    723 			kp->k_pkg_size = 6;
    724 			break;
    725 		case 0xf8:
    726 		case 0xf9:
    727 		case 0xfa:
    728 		case 0xfb:
    729 			kp->k_pkg_type = KBD_RMS_PKG;
    730 			kp->k_pkg_size = 3;
    731 			break;
    732 		case 0xfc:
    733 			kp->k_pkg_type = KBD_CLK_PKG;
    734 			kp->k_pkg_size = 7;
    735 			break;
    736 		case 0xfe:
    737 			kp->k_pkg_type = KBD_JOY0_PKG;
    738 			kp->k_pkg_size = 2;
    739 			break;
    740 		case 0xff:
    741 			kp->k_pkg_type = KBD_JOY1_PKG;
    742 			kp->k_pkg_size = 2;
    743 			break;
    744 		default:
    745 			printf("kbd: Unknown packet 0x%x\n", msg_start);
    746 			break;
    747 	}
    748 }
    749 
    750 #if NITE>0
    751 /*
    752  * Modifier processing
    753  */
    754 static int
    755 kbd_do_modifier(u_char code)
    756 {
    757 	u_char	up, mask;
    758 
    759 	up   = KBD_RELEASED(code);
    760 	mask = 0;
    761 
    762 	switch(KBD_SCANCODE(code)) {
    763 		case KBD_LEFT_SHIFT:
    764 			mask = KBD_MOD_LSHIFT;
    765 			break;
    766 		case KBD_RIGHT_SHIFT:
    767 			mask = KBD_MOD_RSHIFT;
    768 			break;
    769 		case KBD_CTRL:
    770 			mask = KBD_MOD_CTRL;
    771 			break;
    772 		case KBD_ALT:
    773 			mask = KBD_MOD_ALT;
    774 			break;
    775 		case KBD_CAPS_LOCK:
    776 			/* CAPSLOCK is a toggle */
    777 			if(!up)
    778 				kbd_modifier ^= KBD_MOD_CAPS;
    779 			return 1;
    780 	}
    781 	if(mask) {
    782 		if(up)
    783 			kbd_modifier &= ~mask;
    784 		else
    785 			kbd_modifier |= mask;
    786 		return 1;
    787 	}
    788 	return 0;
    789 }
    790 #endif
    791 
    792 #if NWSKBD>0
    793 /*
    794  * These are the callback functions that are passed to wscons.
    795  * They really don't do anything worth noting, just call the
    796  * other functions above.
    797  */
    798 
    799 static int
    800 kbd_enable(void *c, int on)
    801 {
    802         /* Wonder what this is supposed to do... */
    803 	return 0;
    804 }
    805 
    806 static void
    807 kbd_set_leds(void *c, int leds)
    808 {
    809         /* we can not set the leds */
    810 }
    811 
    812 static int
    813 kbd_ioctl(void *c, u_long cmd, void *data, int flag, struct proc *p)
    814 {
    815 	struct wskbd_bell_data *kd;
    816 
    817 	switch (cmd)
    818 	{
    819 	case WSKBDIO_COMPLEXBELL:
    820 		kd = (struct wskbd_bell_data *)data;
    821 		kbd_bell(0, kd->pitch, kd->period, kd->volume);
    822 		return 0;
    823 	case WSKBDIO_SETLEDS:
    824 		return 0;
    825 	case WSKBDIO_GETLEDS:
    826 		*(int*)data = 0;
    827 		return 0;
    828 	case WSKBDIO_GTYPE:
    829 		*(u_int*)data = WSKBD_TYPE_ATARI;
    830 		return 0;
    831 	}
    832 
    833 	/*
    834 	 * We are supposed to return EPASSTHROUGH to wscons if we didn't
    835 	 * understand.
    836 	 */
    837 	return (EPASSTHROUGH);
    838 }
    839 
    840 static void
    841 kbd_getc(void *c, u_int *type, int *data)
    842 {
    843 	int key;
    844 	key = kbdgetcn();
    845 
    846 	*data = KBD_SCANCODE(key);
    847 	*type = KBD_RELEASED(key) ? WSCONS_EVENT_KEY_UP : WSCONS_EVENT_KEY_DOWN;
    848 }
    849 
    850 static void
    851 kbd_pollc(void *c, int on)
    852 {
    853         kbd_softc.k_pollingmode = on;
    854 }
    855 
    856 static void
    857 kbd_bell(void *v, u_int pitch, u_int duration, u_int volume)
    858 {
    859         kbd_bell_sparms(volume, pitch, duration);
    860 	kbdbell();
    861 }
    862 #endif /* NWSKBD */
    863