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adb_kbd.c revision 1.3
      1 /*	$NetBSD: adb_kbd.c,v 1.3 2007/02/20 01:27:25 macallan Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1998	Colin Wood
      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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by Colin Wood.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: adb_kbd.c,v 1.3 2007/02/20 01:27:25 macallan Exp $");
     35 
     36 #include <sys/param.h>
     37 #include <sys/device.h>
     38 #include <sys/fcntl.h>
     39 #include <sys/poll.h>
     40 #include <sys/select.h>
     41 #include <sys/proc.h>
     42 #include <sys/systm.h>
     43 #include <sys/kernel.h>
     44 #include <sys/sysctl.h>
     45 
     46 #include <dev/wscons/wsconsio.h>
     47 #include <dev/wscons/wskbdvar.h>
     48 #include <dev/wscons/wsksymdef.h>
     49 #include <dev/wscons/wsksymvar.h>
     50 #include <dev/wscons/wsmousevar.h>
     51 
     52 #include <dev/sysmon/sysmonvar.h>
     53 #include <dev/sysmon/sysmon_taskq.h>
     54 
     55 #include <machine/autoconf.h>
     56 #include <machine/keyboard.h>
     57 #include <machine/adbsys.h>
     58 
     59 #include <dev/adb/adbvar.h>
     60 #include <dev/adb/adb_keymap.h>
     61 
     62 #include "adbdebug.h"
     63 
     64 struct adbkbd_softc {
     65 	struct device sc_dev;
     66 	struct adb_device *sc_adbdev;
     67 	struct adb_bus_accessops *sc_ops;
     68 	struct device *sc_wskbddev;
     69 	struct device *sc_wsmousedev;
     70 	struct sysmon_pswitch sc_sm_pbutton;
     71 	int sc_leds;
     72 	int sc_have_led_control;
     73 	int sc_msg_len;
     74 	int sc_event;
     75 	int sc_poll;
     76 	int sc_polled_chars;
     77 	int sc_trans[3];
     78 	int sc_capslock;
     79 #ifdef WSDISPLAY_COMPAT_RAWKBD
     80 	int sc_rawkbd;
     81 #endif
     82 	uint8_t sc_buffer[16];
     83 	uint8_t sc_pollbuf[16];
     84 	uint8_t sc_us;
     85 };
     86 
     87 /*
     88  * Function declarations.
     89  */
     90 static int	adbkbd_match(struct device *, struct cfdata *, void *);
     91 static void	adbkbd_attach(struct device *, struct device *, void *);
     92 
     93 static void	adbkbd_initleds(struct adbkbd_softc *);
     94 static void	adbkbd_keys(struct adbkbd_softc *, uint8_t, uint8_t);
     95 static inline void adbkbd_key(struct adbkbd_softc *, uint8_t);
     96 static int	adbkbd_wait(struct adbkbd_softc *, int);
     97 
     98 /* Driver definition. */
     99 CFATTACH_DECL(adbkbd, sizeof(struct adbkbd_softc),
    100     adbkbd_match, adbkbd_attach, NULL, NULL);
    101 
    102 extern struct cfdriver akbd_cd;
    103 
    104 static int adbkbd_enable(void *, int);
    105 static int adbkbd_ioctl(void *, u_long, caddr_t, int, struct lwp *);
    106 static void adbkbd_set_leds(void *, int);
    107 static void adbkbd_handler(void *, int, uint8_t *);
    108 
    109 struct wskbd_accessops adbkbd_accessops = {
    110 	adbkbd_enable,
    111 	adbkbd_set_leds,
    112 	adbkbd_ioctl,
    113 };
    114 
    115 static void adbkbd_cngetc(void *, u_int *, int *);
    116 static void adbkbd_cnpollc(void *, int);
    117 
    118 struct wskbd_consops adbkbd_consops = {
    119 	adbkbd_cngetc,
    120 	adbkbd_cnpollc,
    121 };
    122 
    123 struct wskbd_mapdata adbkbd_keymapdata = {
    124 	akbd_keydesctab,
    125 #ifdef AKBD_LAYOUT
    126 	AKBD_LAYOUT,
    127 #else
    128 	KB_US,
    129 #endif
    130 };
    131 
    132 static int adbkms_enable(void *);
    133 static int adbkms_ioctl(void *, u_long, caddr_t, int, struct lwp *);
    134 static void adbkms_disable(void *);
    135 
    136 const struct wsmouse_accessops adbkms_accessops = {
    137 	adbkms_enable,
    138 	adbkms_ioctl,
    139 	adbkms_disable,
    140 };
    141 
    142 static int  adbkbd_sysctl_button(SYSCTLFN_ARGS);
    143 static void adbkbd_setup_sysctl(struct adbkbd_softc *);
    144 
    145 #ifdef ADBKBD_DEBUG
    146 #define DPRINTF printf
    147 #else
    148 #define DPRINTF while (0) printf
    149 #endif
    150 
    151 static int adbkbd_is_console = 0;
    152 static int adbkbd_console_attached = 0;
    153 
    154 static int
    155 adbkbd_match(parent, cf, aux)
    156 	struct device *parent;
    157 	struct cfdata *cf;
    158 	void   *aux;
    159 {
    160 	struct adb_attach_args *aaa = aux;
    161 
    162 	if (aaa->dev->original_addr == ADBADDR_KBD)
    163 		return 1;
    164 	else
    165 		return 0;
    166 }
    167 
    168 static void
    169 adbkbd_attach(struct device *parent, struct device *self, void *aux)
    170 {
    171 	struct adbkbd_softc *sc = (struct adbkbd_softc *)self;
    172 	struct adb_attach_args *aaa = aux;
    173 	short cmd;
    174 	struct wskbddev_attach_args a;
    175 	struct wsmousedev_attach_args am;
    176 
    177 	sc->sc_ops = aaa->ops;
    178 	sc->sc_adbdev = aaa->dev;
    179 	sc->sc_adbdev->cookie = sc;
    180 	sc->sc_adbdev->handler = adbkbd_handler;
    181 	sc->sc_us = ADBTALK(sc->sc_adbdev->current_addr, 0);
    182 
    183 	sc->sc_leds = 0;	/* initially off */
    184 	sc->sc_have_led_control = 0;
    185 	sc->sc_msg_len = 0;
    186 	sc->sc_poll = 0;
    187 	sc->sc_capslock = 0;
    188 	sc->sc_trans[1] = 103;	/* F11 */
    189 	sc->sc_trans[2] = 111;	/* F12 */
    190 
    191 	printf(" addr %d ", sc->sc_adbdev->current_addr);
    192 
    193 	switch (sc->sc_adbdev->handler_id) {
    194 	case ADB_STDKBD:
    195 		printf("standard keyboard\n");
    196 		break;
    197 	case ADB_ISOKBD:
    198 		printf("standard keyboard (ISO layout)\n");
    199 		break;
    200 	case ADB_EXTKBD:
    201 		cmd = ADBTALK(sc->sc_adbdev->current_addr, 1);
    202 		sc->sc_msg_len = 0;
    203 		sc->sc_ops->send(sc->sc_ops->cookie, sc->sc_poll, cmd, 0, NULL);
    204 		adbkbd_wait(sc, 10);
    205 
    206 		/* Ignore Logitech MouseMan/Trackman pseudo keyboard */
    207 		/* XXX needs testing */
    208 		if (sc->sc_buffer[2] == 0x9a && sc->sc_buffer[3] == 0x20) {
    209 			printf("Mouseman (non-EMP) pseudo keyboard\n");
    210 			return;
    211 		} else if (sc->sc_buffer[2] == 0x9a &&
    212 		    sc->sc_buffer[3] == 0x21) {
    213 			printf("Trackman (non-EMP) pseudo keyboard\n");
    214 			return;
    215 		} else {
    216 			printf("extended keyboard\n");
    217 			adbkbd_initleds(sc);
    218 		}
    219 		break;
    220 	case ADB_EXTISOKBD:
    221 		printf("extended keyboard (ISO layout)\n");
    222 		adbkbd_initleds(sc);
    223 		break;
    224 	case ADB_KBDII:
    225 		printf("keyboard II\n");
    226 		break;
    227 	case ADB_ISOKBDII:
    228 		printf("keyboard II (ISO layout)\n");
    229 		break;
    230 	case ADB_PBKBD:
    231 		printf("PowerBook keyboard\n");
    232 		break;
    233 	case ADB_PBISOKBD:
    234 		printf("PowerBook keyboard (ISO layout)\n");
    235 		break;
    236 	case ADB_ADJKPD:
    237 		printf("adjustable keypad\n");
    238 		break;
    239 	case ADB_ADJKBD:
    240 		printf("adjustable keyboard\n");
    241 		break;
    242 	case ADB_ADJISOKBD:
    243 		printf("adjustable keyboard (ISO layout)\n");
    244 		break;
    245 	case ADB_ADJJAPKBD:
    246 		printf("adjustable keyboard (Japanese layout)\n");
    247 		break;
    248 	case ADB_PBEXTISOKBD:
    249 		printf("PowerBook extended keyboard (ISO layout)\n");
    250 		break;
    251 	case ADB_PBEXTJAPKBD:
    252 		printf("PowerBook extended keyboard (Japanese layout)\n");
    253 		break;
    254 	case ADB_JPKBDII:
    255 		printf("keyboard II (Japanese layout)\n");
    256 		break;
    257 	case ADB_PBEXTKBD:
    258 		printf("PowerBook extended keyboard\n");
    259 		break;
    260 	case ADB_DESIGNKBD:
    261 		printf("extended keyboard\n");
    262 		adbkbd_initleds(sc);
    263 		break;
    264 	case ADB_PBJPKBD:
    265 		printf("PowerBook keyboard (Japanese layout)\n");
    266 		break;
    267 	case ADB_PBG3KBD:
    268 		printf("PowerBook G3 keyboard\n");
    269 		break;
    270 	case ADB_PBG3JPKBD:
    271 		printf("PowerBook G3 keyboard (Japanese layout)\n");
    272 		break;
    273 	case ADB_IBOOKKBD:
    274 		printf("iBook keyboard\n");
    275 		break;
    276 	default:
    277 		printf("mapped device (%d)\n", sc->sc_adbdev->handler_id);
    278 		break;
    279 	}
    280 
    281 	if (adbkbd_is_console && (adbkbd_console_attached == 0)) {
    282 		wskbd_cnattach(&adbkbd_consops, sc, &adbkbd_keymapdata);
    283 		adbkbd_console_attached = 1;
    284 		a.console = 1;
    285 	} else {
    286 		a.console = 0;
    287 	}
    288 	a.keymap = &adbkbd_keymapdata;
    289 	a.accessops = &adbkbd_accessops;
    290 	a.accesscookie = sc;
    291 
    292 	sc->sc_wskbddev = config_found_ia(self, "wskbddev", &a, wskbddevprint);
    293 
    294 	/* attach the mouse device */
    295 	am.accessops = &adbkms_accessops;
    296 	am.accesscookie = sc;
    297 	sc->sc_wsmousedev = config_found_ia(self, "wsmousedev", &am, wsmousedevprint);
    298 
    299 	if (sc->sc_wsmousedev != NULL)
    300 		adbkbd_setup_sysctl(sc);
    301 
    302 	/* finally register the power button */
    303 	sysmon_task_queue_init();
    304 	memset(&sc->sc_sm_pbutton, 0, sizeof(struct sysmon_pswitch));
    305 	sc->sc_sm_pbutton.smpsw_name = sc->sc_dev.dv_xname;
    306 	sc->sc_sm_pbutton.smpsw_type = PSWITCH_TYPE_POWER;
    307 	if (sysmon_pswitch_register(&sc->sc_sm_pbutton) != 0)
    308 		printf("%s: unable to register power button with sysmon\n",
    309 		    sc->sc_dev.dv_xname);
    310 }
    311 
    312 static void
    313 adbkbd_handler(void *cookie, int len, uint8_t *data)
    314 {
    315 	struct adbkbd_softc *sc = cookie;
    316 
    317 #ifdef ADBKBD_DEBUG
    318 	int i;
    319 	printf("%s: %02x - ", sc->sc_dev.dv_xname, sc->sc_us);
    320 	for (i = 0; i < len; i++) {
    321 		printf(" %02x", data[i]);
    322 	}
    323 	printf("\n");
    324 #endif
    325 	if (len >= 2) {
    326 		if (data[1] == sc->sc_us) {
    327 			adbkbd_keys(sc, data[2], data[3]);
    328 			return;
    329 		} else {
    330 			memcpy(sc->sc_buffer, data, len);
    331 		}
    332 		sc->sc_msg_len = len;
    333 		wakeup(&sc->sc_event);
    334 	} else {
    335 		DPRINTF("bogus message\n");
    336 	}
    337 }
    338 
    339 static int
    340 adbkbd_wait(struct adbkbd_softc *sc, int timeout)
    341 {
    342 	int cnt = 0;
    343 
    344 	if (sc->sc_poll) {
    345 		while (sc->sc_msg_len == 0) {
    346 			sc->sc_ops->poll(sc->sc_ops->cookie);
    347 		}
    348 	} else {
    349 		while ((sc->sc_msg_len == 0) && (cnt < timeout)) {
    350 			tsleep(&sc->sc_event, 0, "adbkbdio", hz);
    351 			cnt++;
    352 		}
    353 	}
    354 	return (sc->sc_msg_len > 0);
    355 }
    356 
    357 static void
    358 adbkbd_keys(struct adbkbd_softc *sc, uint8_t k1, uint8_t k2)
    359 {
    360 
    361 	/* keyboard event processing */
    362 
    363 	DPRINTF("[%02x %02x]", k1, k2);
    364 
    365 	if (((k1 == k2) && (k1 == 0x7f)) || (k1 == 0x7e)) {
    366 
    367 		/* power button, report to sysmon */
    368 		sysmon_pswitch_event(&sc->sc_sm_pbutton,
    369 		    ADBK_PRESS(k1) ? PSWITCH_EVENT_PRESSED :
    370 		    PSWITCH_EVENT_RELEASED);
    371 	} else {
    372 
    373 		adbkbd_key(sc, k1);
    374 		if (k2 != 0xff)
    375 			adbkbd_key(sc, k2);
    376 	}
    377 }
    378 
    379 static inline void
    380 adbkbd_key(struct adbkbd_softc *sc, uint8_t k)
    381 {
    382 
    383 	if (sc->sc_poll) {
    384 		if (sc->sc_polled_chars >= 16) {
    385 			printf("%s: polling buffer is full\n",
    386 			    sc->sc_dev.dv_xname);
    387 		}
    388 		sc->sc_pollbuf[sc->sc_polled_chars] = k;
    389 		sc->sc_polled_chars++;
    390 		return;
    391 	}
    392 
    393 	/* translate some keys to mouse events */
    394 	if (sc->sc_wsmousedev != NULL) {
    395 		if (ADBK_KEYVAL(k) == sc->sc_trans[1]) {
    396 			wsmouse_input(sc->sc_wsmousedev, ADBK_PRESS(k) ? 2 : 0,
    397 			      0, 0, 0, 0,
    398 			      WSMOUSE_INPUT_DELTA);
    399 			return;
    400 		}
    401 		if (ADBK_KEYVAL(k) == sc->sc_trans[2]) {
    402 			wsmouse_input(sc->sc_wsmousedev, ADBK_PRESS(k) ? 4 : 0,
    403 			      0, 0, 0, 0,
    404 			      WSMOUSE_INPUT_DELTA);
    405 			return;
    406 		}
    407 	}
    408 #ifdef WSDISPLAY_COMPAT_RAWKBD
    409 	if (sc->sc_rawkbd) {
    410 		char cbuf[2];
    411 		int s;
    412 		int j = 0;
    413 		int c = keyboard[ADBK_KEYVAL(k)][3]
    414 
    415 		if (k & 0x80)
    416 			cbuf[j++] = 0xe0;
    417 
    418 		cbuf[j++] = (c & 0x7f) | (ADBK_PRESS(k)? 0 : 0x80);
    419 
    420 		s = spltty();
    421 		wskbd_rawinput(sc->sc_wskbddev, cbuf, j);
    422 		splx(s);
    423 	} else {
    424 #endif
    425 
    426 	if (ADBK_KEYVAL(k) == 0x39) {
    427 		/* caps lock - send up and down */
    428 		if (ADBK_PRESS(k) != sc->sc_capslock) {
    429 			sc->sc_capslock = ADBK_PRESS(k);
    430 			wskbd_input(sc->sc_wskbddev,
    431 			    WSCONS_EVENT_KEY_DOWN, 0x39);
    432 			wskbd_input(sc->sc_wskbddev,
    433 			    WSCONS_EVENT_KEY_UP, 0x39);
    434 		}
    435 	} else {
    436 		/* normal event */
    437 		int type;
    438 
    439 		type = ADBK_PRESS(k) ?
    440 		    WSCONS_EVENT_KEY_DOWN : WSCONS_EVENT_KEY_UP;
    441 		wskbd_input(sc->sc_wskbddev, type, ADBK_KEYVAL(k));
    442 	}
    443 #ifdef WSDISPLAY_COMPAT_RAWKBD
    444 	}
    445 #endif
    446 }
    447 
    448 /*
    449  * Set the keyboard LED's.
    450  *
    451  * Automatically translates from ioctl/softc format to the
    452  * actual keyboard register format
    453  */
    454 static void
    455 adbkbd_set_leds(void *cookie, int leds)
    456 {
    457 	struct adbkbd_softc *sc = cookie;
    458 	int aleds;
    459 	short cmd;
    460 	uint8_t buffer[2];
    461 
    462 	DPRINTF("adbkbd_set_leds: %02x\n", leds);
    463 	if ((leds & 0x07) == (sc->sc_leds & 0x07))
    464 		return;
    465 
    466  	if (sc->sc_have_led_control) {
    467 
    468 		aleds = (~leds & 0x04) | 3;
    469 		if (leds & 1)
    470 			aleds &= ~2;
    471 		if (leds & 2)
    472 			aleds &= ~1;
    473 
    474 		buffer[0] = 0xff;
    475 		buffer[1] = aleds | 0xf8;
    476 
    477 		cmd = ADBLISTEN(sc->sc_adbdev->current_addr, 2);
    478 		sc->sc_ops->send(sc->sc_ops->cookie, sc->sc_poll, cmd, 2, buffer);
    479 	}
    480 
    481 	sc->sc_leds = leds & 7;
    482 }
    483 
    484 static void
    485 adbkbd_initleds(struct adbkbd_softc *sc)
    486 {
    487 	short cmd;
    488 
    489 	/* talk R2 */
    490 	cmd = ADBTALK(sc->sc_adbdev->current_addr, 2);
    491 	sc->sc_msg_len = 0;
    492 	sc->sc_ops->send(sc->sc_ops->cookie, sc->sc_poll, cmd, 0, NULL);
    493 	if (!adbkbd_wait(sc, 10)) {
    494 		printf("unable to read LED state\n");
    495 		return;
    496 	}
    497 	sc->sc_have_led_control = 1;
    498 	DPRINTF("have LED control\n");
    499 	return;
    500 }
    501 
    502 static int
    503 adbkbd_enable(void *v, int on)
    504 {
    505 	return 0;
    506 }
    507 
    508 static int
    509 adbkbd_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct lwp *l)
    510 {
    511 	struct adbkbd_softc *sc = (struct adbkbd_softc *) v;
    512 
    513 	switch (cmd) {
    514 
    515 	case WSKBDIO_GTYPE:
    516 		*(int *)data = WSKBD_TYPE_ADB;
    517 		return 0;
    518 	case WSKBDIO_SETLEDS:
    519 		adbkbd_set_leds(sc, *(int *)data);
    520 		return 0;
    521 	case WSKBDIO_GETLEDS:
    522 		*(int *)data = sc->sc_leds;
    523 		return 0;
    524 #ifdef WSDISPLAY_COMPAT_RAWKBD
    525 	case WSKBDIO_SETMODE:
    526 		sc->sc_rawkbd = *(int *)data == WSKBD_RAW;
    527 		return 0;
    528 #endif
    529 	}
    530 
    531 	return EPASSTHROUGH;
    532 }
    533 
    534 int
    535 adbkbd_cnattach()
    536 {
    537 
    538 	adbkbd_is_console = 1;
    539 	return 0;
    540 }
    541 
    542 static void
    543 adbkbd_cngetc(void *v, u_int *type, int *data)
    544 {
    545 	struct adbkbd_softc *sc = v;
    546 	int key, press, val;
    547 	int s;
    548 
    549 	s = splhigh();
    550 
    551 	KASSERT(sc->sc_poll);
    552 
    553 	DPRINTF("polling...");
    554 	while (sc->sc_polled_chars == 0) {
    555 		sc->sc_ops->poll(sc->sc_ops->cookie);
    556 	}
    557 	DPRINTF(" got one\n");
    558 	splx(s);
    559 
    560 	key = sc->sc_pollbuf[0];
    561 	sc->sc_polled_chars--;
    562 	memmove(sc->sc_pollbuf, sc->sc_pollbuf + 1,
    563 		sc->sc_polled_chars);
    564 
    565 	press = ADBK_PRESS(key);
    566 	val = ADBK_KEYVAL(key);
    567 
    568 	*data = val;
    569 	*type = press ? WSCONS_EVENT_KEY_DOWN : WSCONS_EVENT_KEY_UP;
    570 }
    571 
    572 static void
    573 adbkbd_cnpollc(void *v, int on)
    574 {
    575 	struct adbkbd_softc *sc = v;
    576 
    577 	sc->sc_poll = on;
    578 	if (!on) {
    579 		int i;
    580 
    581 		/* feed the poll buffer's content to wskbd */
    582 		for (i = 0; i < sc->sc_polled_chars; i++) {
    583 			adbkbd_key(sc, sc->sc_pollbuf[i]);
    584 		}
    585 		sc->sc_polled_chars = 0;
    586 	}
    587 }
    588 
    589 /* stuff for the pseudo mouse */
    590 static int
    591 adbkms_enable(void *v)
    592 {
    593 	return 0;
    594 }
    595 
    596 static int
    597 adbkms_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct lwp *l)
    598 {
    599 
    600 	switch (cmd) {
    601 	case WSMOUSEIO_GTYPE:
    602 		*(u_int *)data = WSMOUSE_TYPE_PSEUDO;
    603 		break;
    604 
    605 	default:
    606 		return (EPASSTHROUGH);
    607 	}
    608 	return (0);
    609 }
    610 
    611 static void
    612 adbkms_disable(void *v)
    613 {
    614 }
    615 
    616 static void
    617 adbkbd_setup_sysctl(struct adbkbd_softc *sc)
    618 {
    619 	struct sysctlnode *node, *me;
    620 	int ret;
    621 
    622 	DPRINTF("%s: sysctl setup\n", sc->sc_dev.dv_xname);
    623 	ret = sysctl_createv(NULL, 0, NULL, (const struct sysctlnode **)&me,
    624 	       CTLFLAG_READWRITE,
    625 	       CTLTYPE_NODE, sc->sc_dev.dv_xname, NULL,
    626 	       NULL, 0, NULL, 0,
    627 	       CTL_MACHDEP, CTL_CREATE, CTL_EOL);
    628 
    629 	ret = sysctl_createv(NULL, 0, NULL,
    630 	    (const struct sysctlnode **)&node,
    631 	    CTLFLAG_READWRITE | CTLFLAG_OWNDESC | CTLFLAG_IMMEDIATE,
    632 	    CTLTYPE_INT, "middle", "middle mouse button", adbkbd_sysctl_button,
    633 		    1, NULL, 0, CTL_MACHDEP, me->sysctl_num, CTL_CREATE, CTL_EOL);
    634 	node->sysctl_data = sc;
    635 
    636 	ret = sysctl_createv(NULL, 0, NULL,
    637 	    (const struct sysctlnode **)&node,
    638 	    CTLFLAG_READWRITE | CTLFLAG_OWNDESC | CTLFLAG_IMMEDIATE,
    639 	    CTLTYPE_INT, "right", "right mouse button", adbkbd_sysctl_button,
    640 		    2, NULL, 0, CTL_MACHDEP, me->sysctl_num, CTL_CREATE, CTL_EOL);
    641 	node->sysctl_data = sc;
    642 }
    643 
    644 static int
    645 adbkbd_sysctl_button(SYSCTLFN_ARGS)
    646 {
    647 	struct sysctlnode node = *rnode;
    648 	struct adbkbd_softc *sc=(struct adbkbd_softc *)node.sysctl_data;
    649 	const int *np = newp;
    650 	int btn = node.sysctl_idata, reg;
    651 
    652 	DPRINTF("adbkbd_sysctl_button %d\n", btn);
    653 	node.sysctl_idata = sc->sc_trans[btn];
    654 	reg = sc->sc_trans[btn];
    655 	if (np) {
    656 		/* we're asked to write */
    657 		node.sysctl_data = &reg;
    658 		if (sysctl_lookup(SYSCTLFN_CALL(&node)) == 0) {
    659 
    660 			sc->sc_trans[btn] = node.sysctl_idata;
    661 			return 0;
    662 		}
    663 		return EINVAL;
    664 	} else {
    665 		node.sysctl_size = 4;
    666 		return (sysctl_lookup(SYSCTLFN_CALL(&node)));
    667 	}
    668 }
    669 
    670 SYSCTL_SETUP(sysctl_adbkbdtrans_setup, "adbkbd translator setup")
    671 {
    672 
    673 	sysctl_createv(NULL, 0, NULL, NULL,
    674 		       CTLFLAG_PERMANENT,
    675 		       CTLTYPE_NODE, "machdep", NULL,
    676 		       NULL, 0, NULL, 0,
    677 		       CTL_MACHDEP, CTL_EOL);
    678 }
    679