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nextkbd.c revision 1.3 
      1 /* $NetBSD: nextkbd.c,v 1.3 1999/03/26 04:17:46 dbj Exp $ */
      2 /*
      3  * Copyright (c) 1998 Matt DeBergalis
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *      This product includes software developed by Matt DeBergalis
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     33 
     34 #include <sys/param.h>
     35 #include <sys/systm.h>
     36 #include <sys/kernel.h>
     37 #include <sys/proc.h>
     38 #include <sys/device.h>
     39 #include <sys/malloc.h>
     40 #include <sys/errno.h>
     41 #include <sys/queue.h>
     42 #include <sys/lock.h>
     43 
     44 #include <machine/autoconf.h>
     45 #include <machine/cpu.h>
     46 #include <machine/intr.h>
     47 #include <machine/bus.h>
     48 
     49 #include <next68k/dev/nextkbdvar.h>
     50 #include <next68k/dev/wskbdmap_next.h>
     51 
     52 #include <dev/wscons/wsconsio.h>
     53 #include <dev/wscons/wskbdvar.h>
     54 #include <dev/wscons/wsksymdef.h>
     55 #include <dev/wscons/wsksymvar.h>
     56 
     57 #include <next68k/next68k/isr.h>
     58 
     59 struct nextkbd_internal {
     60 	int num_ints; /* interrupt total */
     61 	int polling;
     62 	int isconsole;
     63 
     64 	bus_space_tag_t iot;
     65 	bus_space_handle_t ioh;
     66 	struct nextkbd_softc *t_sc; /* back pointer */
     67 	u_int32_t mods;
     68 };
     69 
     70 struct mon_regs {
     71 	u_int32_t mon_csr;
     72 	u_int32_t mon_1;
     73 	u_int32_t mon_data;
     74 };
     75 
     76 int nextkbd_match __P((struct device *, struct cfdata *, void *));
     77 void nextkbd_attach __P((struct device *, struct device *, void *));
     78 
     79 int nextkbc_cnattach __P((bus_space_tag_t));
     80 
     81 struct cfattach nextkbd_ca = {
     82 	sizeof(struct nextkbd_softc), nextkbd_match, nextkbd_attach
     83 };
     84 
     85 int	nextkbd_enable __P((void *, int));
     86 void	nextkbd_set_leds __P((void *, int));
     87 int	nextkbd_ioctl __P((void *, u_long, caddr_t, int, struct proc *));
     88 
     89 const struct wskbd_accessops nextkbd_accessops = {
     90 	nextkbd_enable,
     91 	nextkbd_set_leds,
     92 	nextkbd_ioctl,
     93 };
     94 
     95 void	nextkbd_cngetc __P((void *, u_int *, int *));
     96 void	nextkbd_cnpollc __P((void *, int));
     97 
     98 const struct wskbd_consops nextkbd_consops = {
     99 	nextkbd_cngetc,
    100 	nextkbd_cnpollc,
    101 };
    102 
    103 const struct wskbd_mapdata nextkbd_keymapdata = {
    104 	nextkbd_keydesctab,
    105 	KB_US,
    106 };
    107 
    108 static int nextkbd_read_data __P((struct nextkbd_internal *));
    109 static int nextkbd_decode __P((struct nextkbd_internal *, int, u_int *, int *));
    110 
    111 static struct nextkbd_internal nextkbd_consdata;
    112 static int nextkbd_is_console __P((bus_space_tag_t bst));
    113 
    114 int nextkbdhard __P((void *));
    115 
    116 static int
    117 nextkbd_is_console(bst)
    118 	bus_space_tag_t bst;
    119 {
    120 	return (nextkbd_consdata.isconsole
    121 			&& (bst == nextkbd_consdata.iot));
    122 }
    123 
    124 int
    125 nextkbd_match(parent, match, aux)
    126 	struct device *parent;
    127 	struct cfdata *match;
    128 	void *aux;
    129 {
    130 	return 1;
    131 }
    132 
    133 void
    134 nextkbd_attach(parent, self, aux)
    135 	struct device *parent, *self;
    136 	void *aux;
    137 {
    138 	struct nextkbd_softc *sc = (struct nextkbd_softc *)self;
    139 	int isconsole;
    140 	struct wskbddev_attach_args a;
    141 
    142 	printf("\n");
    143 
    144 	isconsole = nextkbd_is_console(NEXT68K_INTIO_BUS_SPACE); /* XXX */
    145 
    146 	if (isconsole) {
    147 		sc->id = &nextkbd_consdata;
    148 	} else {
    149 		sc->id = malloc(sizeof(struct nextkbd_internal),
    150 				M_DEVBUF, M_WAITOK);
    151 
    152 		memset(sc->id, 0, sizeof(struct nextkbd_internal));
    153 		sc->id->iot = NEXT68K_INTIO_BUS_SPACE;
    154 		if (bus_space_map(sc->id->iot, NEXT_P_MON,
    155 				sizeof(struct mon_regs),
    156 				0, &sc->id->ioh)) {
    157 			printf("%s: can't map mon status control register\n",
    158 					sc->sc_dev.dv_xname);
    159 			return;
    160 		}
    161 	}
    162 
    163 	sc->id->t_sc = sc; /* set back pointer */
    164 
    165 	isrlink_autovec(nextkbdhard, sc, NEXT_I_IPL(NEXT_I_KYBD_MOUSE), 0);
    166 
    167 	INTR_ENABLE(NEXT_I_KYBD_MOUSE);
    168 
    169 	a.console = isconsole;
    170 	a.keymap = &nextkbd_keymapdata;
    171 	a.accessops = &nextkbd_accessops;
    172 	a.accesscookie = sc;
    173 
    174 	/*
    175 	 * Attach the wskbd, saving a handle to it.
    176 	 * XXX XXX XXX
    177 	 */
    178 	sc->sc_wskbddev = config_found(self, &a, wskbddevprint);
    179 }
    180 
    181 int
    182 nextkbd_enable(v, on)
    183 	void *v;
    184 	int on;
    185 {
    186 	/* XXX not sure if this should do anything */
    187 	/* printf("nextkbd_enable %d\n", on); */
    188 	return 0;
    189 }
    190 
    191 /* XXX not yet implemented */
    192 void
    193 nextkbd_set_leds(v, leds)
    194 	void *v;
    195 	int leds;
    196 {
    197 	return;
    198 }
    199 
    200 int
    201 nextkbd_ioctl(v, cmd, data, flag, p)
    202 	void *v;
    203 	u_long cmd;
    204 	caddr_t data;
    205 	int flag;
    206 	struct proc *p;
    207 {
    208 	/* XXX struct nextkbd_softc *nc = v; */
    209 
    210 	switch (cmd) {
    211 	case WSKBDIO_GTYPE:
    212 		/* XXX */
    213 		*(int *)data = WSKBD_TYPE_NEXT;
    214 		return (0);
    215 	case WSKBDIO_SETLEDS:
    216 		return (0);
    217 	case WSKBDIO_GETLEDS:
    218 		*(int *)data = 0;
    219 		return (0);
    220 	case WSKBDIO_COMPLEXBELL:
    221 		return (0);
    222 	}
    223 	return -1;
    224 }
    225 
    226 int
    227 nextkbdhard(arg)
    228 	void *arg;
    229 {
    230 	register struct nextkbd_softc *sc = arg;
    231 	int type, key, val;
    232 
    233 	if (!INTR_OCCURRED(NEXT_I_KYBD_MOUSE)) return 0;
    234 
    235 #define CSR_INT 0x00800000
    236 #define CSR_DATA 0x00400000
    237 
    238 #define KD_KEYMASK			0x007f
    239 #define KD_DIRECTION		0x0080 /* pressed or released */
    240 #define KD_CNTL					0x0100
    241 #define KD_LSHIFT				0x0200
    242 #define KD_RSHIFT				0x0400
    243 #define KD_LCOMM				0x0800
    244 #define KD_RCOMM				0x1000
    245 #define KD_LALT					0x2000
    246 #define KD_RALT					0x4000
    247 #define KD_VALID				0x8000 /* only set for scancode keys ? */
    248 #define KD_MODS					0x4f00
    249 
    250 	val = nextkbd_read_data(sc->id);
    251 	if ((val != -1) && nextkbd_decode(sc->id, val, &type, &key)) {
    252 		wskbd_input(sc->sc_wskbddev, type, key);
    253 	}
    254 	return(1);
    255 }
    256 
    257 int
    258 nextkbd_cnattach(bst)
    259 	bus_space_tag_t bst;
    260 {
    261 	bus_space_handle_t bsh;
    262 
    263 	if (bus_space_map(bst, NEXT_P_MON, sizeof(struct mon_regs),
    264 			0, &bsh))
    265 		return (ENXIO);
    266 
    267 	memset(&nextkbd_consdata, 0, sizeof(nextkbd_consdata));
    268 
    269 	nextkbd_consdata.iot = bst;
    270 	nextkbd_consdata.ioh = bsh;
    271 	nextkbd_consdata.isconsole = 1;
    272 
    273 	wskbd_cnattach(&nextkbd_consops, &nextkbd_consdata,
    274 			&nextkbd_keymapdata);
    275 
    276 	return (0);
    277 }
    278 
    279 void
    280 nextkbd_cngetc(v, type, data)
    281 	void *v;
    282 	u_int *type;
    283 	int *data;
    284 {
    285 	struct nextkbd_internal *t = v;
    286 	int val;
    287 
    288 	for (;;) {
    289 		if (INTR_OCCURRED(NEXT_I_KYBD_MOUSE)) {
    290 			val = nextkbd_read_data(t);
    291 			if ((val != -1) && nextkbd_decode(t, val, type, data))
    292 				return;
    293 		}
    294 	}
    295 }
    296 
    297 void
    298 nextkbd_cnpollc(v, on)
    299 	void *v;
    300 	int on;
    301 {
    302 	struct nextkbd_internal *t = v;
    303 
    304 	t->polling = on;
    305 	if (on) {
    306 		INTR_DISABLE(NEXT_I_KYBD_MOUSE);
    307 	} else {
    308 		INTR_ENABLE(NEXT_I_KYBD_MOUSE);
    309 	}
    310 
    311 }
    312 
    313 static int
    314 nextkbd_read_data(struct nextkbd_internal *id)
    315 {
    316 	unsigned char device;
    317 	struct mon_regs stat;
    318 
    319 	bus_space_read_region_4(id->iot, id->ioh, 0, &stat, 3);
    320 	if ((stat.mon_csr & CSR_INT) && (stat.mon_csr & CSR_DATA)) {
    321 		stat.mon_csr &= ~CSR_INT;
    322 		id->num_ints++;
    323 		bus_space_write_4(id->iot, id->ioh, 0, stat.mon_csr);
    324 		device = stat.mon_data >> 28;
    325 		if (device != 1) return (-1); /* XXX: mouse */
    326 		return (stat.mon_data & 0xffff);
    327 	}
    328 	return (-1);
    329 }
    330 
    331 static int
    332 nextkbd_decode(id, datain, type, dataout)
    333 	struct nextkbd_internal *id;
    334 	int datain;
    335 	u_int *type;
    336 	int *dataout;
    337 {
    338 	/* printf("datain %08x mods %08x\n", datain, id->mods); */
    339 
    340 	if ((datain ^ id->mods) & KD_LSHIFT) {
    341 		id->mods ^= KD_LSHIFT;
    342 		*dataout = 90;
    343 		if (datain & KD_LSHIFT)
    344 			*type = WSCONS_EVENT_KEY_DOWN;
    345 		else
    346 			*type = WSCONS_EVENT_KEY_UP;
    347 	} else if ((datain ^ id->mods) & KD_RSHIFT) {
    348 		id->mods ^= KD_RSHIFT;
    349 		*dataout = 91;
    350 		if (datain & KD_RSHIFT)
    351 			*type = WSCONS_EVENT_KEY_DOWN;
    352 		else
    353 			*type = WSCONS_EVENT_KEY_UP;
    354 	} else if ((datain ^ id->mods) & KD_LALT) {
    355 		id->mods ^= KD_LALT;
    356 		*dataout = 92;
    357 		if (datain & KD_LALT)
    358 			*type = WSCONS_EVENT_KEY_DOWN;
    359 		else
    360 			*type = WSCONS_EVENT_KEY_UP;
    361 	} else if ((datain ^ id->mods) & KD_RALT) {
    362 		id->mods ^= KD_RALT;
    363 		*dataout = 93;
    364 		if (datain & KD_RALT)
    365 			*type = WSCONS_EVENT_KEY_DOWN;
    366 		else
    367 			*type = WSCONS_EVENT_KEY_UP;
    368 	} else if ((datain ^ id->mods) & KD_CNTL) {
    369 		id->mods ^= KD_CNTL;
    370 		*dataout = 94;
    371 		if (datain & KD_CNTL)
    372 			*type = WSCONS_EVENT_KEY_DOWN;
    373 		else
    374 			*type = WSCONS_EVENT_KEY_UP;
    375 	} else if ((datain ^ id->mods) & KD_LCOMM) {
    376 		id->mods ^= KD_LCOMM;
    377 		*dataout = 95;
    378 		if (datain & KD_LCOMM)
    379 			*type = WSCONS_EVENT_KEY_DOWN;
    380 		else
    381 			*type = WSCONS_EVENT_KEY_UP;
    382 	} else if ((datain ^ id->mods) & KD_RCOMM) {
    383 		id->mods ^= KD_RCOMM;
    384 		*dataout = 96;
    385 		if (datain & KD_RCOMM)
    386 			*type = WSCONS_EVENT_KEY_DOWN;
    387 		else
    388 			*type = WSCONS_EVENT_KEY_UP;
    389 	} else if (datain & KD_KEYMASK) {
    390 		if (datain & KD_DIRECTION)
    391 			*type = WSCONS_EVENT_KEY_UP;
    392 		else
    393 			*type = WSCONS_EVENT_KEY_DOWN;
    394 
    395 		*dataout = (datain & KD_KEYMASK);
    396 	} else {
    397 		*dataout = 0;
    398 	}
    399 
    400 	return 1;
    401 }
    402