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nextkbd.c revision 1.10 
      1 /* $NetBSD: nextkbd.c,v 1.10 2005/12/11 12:18:25 christos 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>
     33 __KERNEL_RCSID(0, "$NetBSD: nextkbd.c,v 1.10 2005/12/11 12:18:25 christos Exp $");
     34 
     35 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/kernel.h>
     40 #include <sys/proc.h>
     41 #include <sys/device.h>
     42 #include <sys/malloc.h>
     43 #include <sys/errno.h>
     44 #include <sys/queue.h>
     45 #include <sys/lock.h>
     46 
     47 #include <machine/autoconf.h>
     48 #include <machine/bus.h>
     49 #include <machine/cpu.h>
     50 #include <machine/intr.h>
     51 
     52 #include <next68k/dev/nextkbdvar.h>
     53 #include <next68k/dev/wskbdmap_next.h>
     54 
     55 #include <dev/wscons/wsconsio.h>
     56 #include <dev/wscons/wskbdvar.h>
     57 #include <dev/wscons/wsksymdef.h>
     58 #include <dev/wscons/wsksymvar.h>
     59 
     60 #include <next68k/next68k/isr.h>
     61 
     62 #include <next68k/dev/intiovar.h>
     63 
     64 struct nextkbd_internal {
     65 	int num_ints; /* interrupt total */
     66 	int polling;
     67 	int isconsole;
     68 
     69 	bus_space_tag_t iot;
     70 	bus_space_handle_t ioh;
     71 	struct nextkbd_softc *t_sc; /* back pointer */
     72 	u_int32_t mods;
     73 };
     74 
     75 struct mon_regs {
     76 	u_int32_t mon_csr;
     77 	u_int32_t mon_1;
     78 	u_int32_t mon_data;
     79 };
     80 
     81 static int attached = 0;
     82 
     83 int nextkbd_match(struct device *, struct cfdata *, void *);
     84 void nextkbd_attach(struct device *, struct device *, void *);
     85 
     86 int nextkbc_cnattach(bus_space_tag_t);
     87 
     88 CFATTACH_DECL(nextkbd, sizeof(struct nextkbd_softc),
     89     nextkbd_match, nextkbd_attach, NULL, NULL);
     90 
     91 int	nextkbd_enable(void *, int);
     92 void	nextkbd_set_leds(void *, int);
     93 int	nextkbd_ioctl(void *, u_long, caddr_t, int, struct lwp *);
     94 
     95 const struct wskbd_accessops nextkbd_accessops = {
     96 	nextkbd_enable,
     97 	nextkbd_set_leds,
     98 	nextkbd_ioctl,
     99 };
    100 
    101 void	nextkbd_cngetc(void *, u_int *, int *);
    102 void	nextkbd_cnpollc(void *, int);
    103 
    104 const struct wskbd_consops nextkbd_consops = {
    105 	nextkbd_cngetc,
    106 	nextkbd_cnpollc,
    107 };
    108 
    109 const struct wskbd_mapdata nextkbd_keymapdata = {
    110 	nextkbd_keydesctab,
    111 	KB_US,
    112 };
    113 
    114 static int nextkbd_read_data(struct nextkbd_internal *);
    115 static int nextkbd_decode(struct nextkbd_internal *, int, u_int *, int *);
    116 
    117 static struct nextkbd_internal nextkbd_consdata;
    118 static int nextkbd_is_console(bus_space_tag_t);
    119 
    120 int nextkbdhard(void *);
    121 
    122 static int
    123 nextkbd_is_console(bus_space_tag_t bst)
    124 {
    125 	return (nextkbd_consdata.isconsole && (bst == nextkbd_consdata.iot));
    126 }
    127 
    128 int
    129 nextkbd_match(struct device *parent, struct cfdata *match, void *aux)
    130 {
    131 	struct intio_attach_args *ia = (struct intio_attach_args *)aux;
    132 
    133 	if (attached)
    134 		return(0);
    135 
    136 	ia->ia_addr = (void *)NEXT_P_MON;
    137 
    138 	return(1);
    139 }
    140 
    141 void
    142 nextkbd_attach(struct device *parent, struct device *self, void *aux)
    143 {
    144 	struct nextkbd_softc *sc = (struct nextkbd_softc *)self;
    145 	struct intio_attach_args *ia = (struct intio_attach_args *)aux;
    146 	int isconsole;
    147 	struct wskbddev_attach_args a;
    148 
    149 	printf("\n");
    150 
    151 	isconsole = nextkbd_is_console(ia->ia_bst); /* XXX */
    152 
    153 	if (isconsole) {
    154 		sc->id = &nextkbd_consdata;
    155 	} else {
    156 		sc->id = malloc(sizeof(struct nextkbd_internal),
    157 				M_DEVBUF, M_WAITOK);
    158 
    159 		memset(sc->id, 0, sizeof(struct nextkbd_internal));
    160 		sc->id->iot = ia->ia_bst;
    161 		if (bus_space_map(sc->id->iot, NEXT_P_MON,
    162 				sizeof(struct mon_regs),
    163 				0, &sc->id->ioh)) {
    164 			printf("%s: can't map mon status control register\n",
    165 					sc->sc_dev.dv_xname);
    166 			return;
    167 		}
    168 	}
    169 
    170 	sc->id->t_sc = sc; /* set back pointer */
    171 
    172 	isrlink_autovec(nextkbdhard, sc, NEXT_I_IPL(NEXT_I_KYBD_MOUSE), 0, NULL);
    173 
    174 	INTR_ENABLE(NEXT_I_KYBD_MOUSE);
    175 
    176 	a.console = isconsole;
    177 	a.keymap = &nextkbd_keymapdata;
    178 	a.accessops = &nextkbd_accessops;
    179 	a.accesscookie = sc;
    180 
    181 	/*
    182 	 * Attach the wskbd, saving a handle to it.
    183 	 * XXX XXX XXX
    184 	 */
    185 	sc->sc_wskbddev = config_found(self, &a, wskbddevprint);
    186 
    187 	attached = 1;
    188 }
    189 
    190 int
    191 nextkbd_enable(void *v, int on)
    192 {
    193 	/* XXX not sure if this should do anything */
    194 	/* printf("nextkbd_enable %d\n", on); */
    195 	return 0;
    196 }
    197 
    198 void
    199 nextkbd_set_leds(void *v, int leds)
    200 {
    201 	struct nextkbd_softc *sc = v;
    202 	uint32_t hw_leds = 0;
    203 	int s;
    204 
    205 	sc->sc_leds &= ~ NEXT_WSKBD_LEDS;
    206 	sc->sc_leds |= (leds & NEXT_WSKBD_LEDS);
    207 
    208 	if (sc->sc_leds & WSKBD_LED_CAPS) {
    209 		hw_leds |= 0x30000;
    210 	}
    211 
    212 	s = spltty();
    213 	bus_space_write_1(sc->id->iot, sc->id->ioh, 3, 0xc5);
    214 	/* @@@ need to add:
    215 	   if bit 7 of @ioh+0 set:
    216 	     repeat 2
    217 	       wait until bit 6 of @ioh+2 clears
    218 	*/
    219 	bus_space_write_4(sc->id->iot, sc->id->ioh, 4, hw_leds);
    220 	/* @@@ need to add:
    221 	   wait until bit 4 of @ioh+0 (@ioh+2 if bit 7 was set above)
    222 	     clears
    223 	*/
    224 	splx(s);
    225 
    226 	return;
    227 }
    228 
    229 int
    230 nextkbd_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct lwp *l)
    231 {
    232 	struct nextkbd_softc *sc = v;
    233 
    234 	switch (cmd) {
    235 	case WSKBDIO_GTYPE:
    236 		/* XXX */
    237 		*(int *)data = WSKBD_TYPE_NEXT;
    238 		return (0);
    239 	case WSKBDIO_SETLEDS:
    240 		nextkbd_set_leds (sc, *(int *)data);
    241 		return (0);
    242 	case WSKBDIO_GETLEDS:
    243 		*(int *)data = sc->sc_leds & NEXT_WSKBD_LEDS;
    244 		return (0);
    245 	case WSKBDIO_COMPLEXBELL:
    246 		return (0);
    247 	}
    248 	return EPASSTHROUGH;
    249 }
    250 
    251 int
    252 nextkbdhard(void *arg)
    253 {
    254 	struct nextkbd_softc *sc = arg;
    255 	int type, key, val;
    256 
    257 	if (!INTR_OCCURRED(NEXT_I_KYBD_MOUSE)) return 0;
    258 
    259 #define CSR_INT 0x00800000
    260 #define CSR_DATA 0x00400000
    261 
    262 #define KD_KEYMASK			0x007f
    263 #define KD_DIRECTION		0x0080 /* pressed or released */
    264 #define KD_CNTL					0x0100
    265 #define KD_LSHIFT				0x0200
    266 #define KD_RSHIFT				0x0400
    267 #define KD_LCOMM				0x0800
    268 #define KD_RCOMM				0x1000
    269 #define KD_LALT					0x2000
    270 #define KD_RALT					0x4000
    271 #define KD_VALID				0x8000 /* only set for scancode keys ? */
    272 #define KD_MODS					0x4f00
    273 
    274 	val = nextkbd_read_data(sc->id);
    275 	if ((val != -1) && nextkbd_decode(sc->id, val, &type, &key)) {
    276 		wskbd_input(sc->sc_wskbddev, type, key);
    277 	}
    278 	return(1);
    279 }
    280 
    281 int
    282 nextkbd_cnattach(bus_space_tag_t bst)
    283 {
    284 	bus_space_handle_t bsh;
    285 
    286 	if (bus_space_map(bst, NEXT_P_MON, sizeof(struct mon_regs),
    287 			0, &bsh))
    288 		return (ENXIO);
    289 
    290 	memset(&nextkbd_consdata, 0, sizeof(nextkbd_consdata));
    291 
    292 	nextkbd_consdata.iot = bst;
    293 	nextkbd_consdata.ioh = bsh;
    294 	nextkbd_consdata.isconsole = 1;
    295 
    296 	wskbd_cnattach(&nextkbd_consops, &nextkbd_consdata,
    297 			&nextkbd_keymapdata);
    298 
    299 	return (0);
    300 }
    301 
    302 void
    303 nextkbd_cngetc(void *v, u_int *type, int *data)
    304 {
    305 	struct nextkbd_internal *t = v;
    306 	int val;
    307 
    308 	for (;;) {
    309 		if (INTR_OCCURRED(NEXT_I_KYBD_MOUSE)) {
    310 			val = nextkbd_read_data(t);
    311 			if ((val != -1) && nextkbd_decode(t, val, type, data))
    312 				return;
    313 		}
    314 	}
    315 }
    316 
    317 void
    318 nextkbd_cnpollc(void *v, int on)
    319 {
    320 	struct nextkbd_internal *t = v;
    321 
    322 	t->polling = on;
    323 	if (on) {
    324 		INTR_DISABLE(NEXT_I_KYBD_MOUSE);
    325 	} else {
    326 		INTR_ENABLE(NEXT_I_KYBD_MOUSE);
    327 	}
    328 
    329 }
    330 
    331 static int
    332 nextkbd_read_data(struct nextkbd_internal *id)
    333 {
    334 	unsigned char device;
    335 	struct mon_regs stat;
    336 
    337 	bus_space_read_region_4(id->iot, id->ioh, 0, &stat, 3);
    338 	if ((stat.mon_csr & CSR_INT) && (stat.mon_csr & CSR_DATA)) {
    339 		stat.mon_csr &= ~CSR_INT;
    340 		id->num_ints++;
    341 		bus_space_write_4(id->iot, id->ioh, 0, stat.mon_csr);
    342 		device = stat.mon_data >> 28;
    343 		if (device != 1) return (-1); /* XXX: mouse */
    344 		return (stat.mon_data & 0xffff);
    345 	}
    346 	return (-1);
    347 }
    348 
    349 static int
    350 nextkbd_decode(struct nextkbd_internal *id, int datain, u_int *type,
    351     int *dataout)
    352 {
    353 	/* printf("datain %08x mods %08x\n", datain, id->mods); */
    354 
    355 	if ((datain ^ id->mods) & KD_LSHIFT) {
    356 		id->mods ^= KD_LSHIFT;
    357 		*dataout = 90;
    358 		if (datain & KD_LSHIFT)
    359 			*type = WSCONS_EVENT_KEY_DOWN;
    360 		else
    361 			*type = WSCONS_EVENT_KEY_UP;
    362 	} else if ((datain ^ id->mods) & KD_RSHIFT) {
    363 		id->mods ^= KD_RSHIFT;
    364 		*dataout = 91;
    365 		if (datain & KD_RSHIFT)
    366 			*type = WSCONS_EVENT_KEY_DOWN;
    367 		else
    368 			*type = WSCONS_EVENT_KEY_UP;
    369 	} else if ((datain ^ id->mods) & KD_LALT) {
    370 		id->mods ^= KD_LALT;
    371 		*dataout = 92;
    372 		if (datain & KD_LALT)
    373 			*type = WSCONS_EVENT_KEY_DOWN;
    374 		else
    375 			*type = WSCONS_EVENT_KEY_UP;
    376 	} else if ((datain ^ id->mods) & KD_RALT) {
    377 		id->mods ^= KD_RALT;
    378 		*dataout = 93;
    379 		if (datain & KD_RALT)
    380 			*type = WSCONS_EVENT_KEY_DOWN;
    381 		else
    382 			*type = WSCONS_EVENT_KEY_UP;
    383 	} else if ((datain ^ id->mods) & KD_CNTL) {
    384 		id->mods ^= KD_CNTL;
    385 		*dataout = 94;
    386 		if (datain & KD_CNTL)
    387 			*type = WSCONS_EVENT_KEY_DOWN;
    388 		else
    389 			*type = WSCONS_EVENT_KEY_UP;
    390 	} else if ((datain ^ id->mods) & KD_LCOMM) {
    391 		id->mods ^= KD_LCOMM;
    392 		*dataout = 95;
    393 		if (datain & KD_LCOMM)
    394 			*type = WSCONS_EVENT_KEY_DOWN;
    395 		else
    396 			*type = WSCONS_EVENT_KEY_UP;
    397 	} else if ((datain ^ id->mods) & KD_RCOMM) {
    398 		id->mods ^= KD_RCOMM;
    399 		*dataout = 96;
    400 		if (datain & KD_RCOMM)
    401 			*type = WSCONS_EVENT_KEY_DOWN;
    402 		else
    403 			*type = WSCONS_EVENT_KEY_UP;
    404 	} else if (datain & KD_KEYMASK) {
    405 		if (datain & KD_DIRECTION)
    406 			*type = WSCONS_EVENT_KEY_UP;
    407 		else
    408 			*type = WSCONS_EVENT_KEY_DOWN;
    409 
    410 		*dataout = (datain & KD_KEYMASK);
    411 	} else {
    412 		*dataout = 0;
    413 	}
    414 
    415 	return 1;
    416 }
    417