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nextkbd.c revision 1.18 
      1 /* $NetBSD: nextkbd.c,v 1.18 2021/08/07 16:19:01 thorpej 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 1.18 2021/08/07 16:19:01 thorpej 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/kmem.h>
     43 #include <sys/errno.h>
     44 #include <sys/queue.h>
     45 #include <sys/bus.h>
     46 #include <sys/cpu.h>
     47 #include <sys/intr.h>
     48 
     49 #include <machine/autoconf.h>
     50 
     51 #include <dev/wscons/wsconsio.h>
     52 #include <dev/wscons/wskbdvar.h>
     53 #include <dev/wscons/wsksymdef.h>
     54 #include <dev/wscons/wsksymvar.h>
     55 
     56 #include <next68k/dev/nextkbdvar.h>
     57 #include <next68k/dev/wskbdmap_next.h>
     58 
     59 #include <next68k/next68k/isr.h>
     60 
     61 #include <next68k/dev/intiovar.h>
     62 
     63 struct nextkbd_internal {
     64 	int num_ints; /* interrupt total */
     65 	int polling;
     66 	int isconsole;
     67 
     68 	bus_space_tag_t iot;
     69 	bus_space_handle_t ioh;
     70 	struct nextkbd_softc *t_sc; /* back pointer */
     71 	u_int32_t mods;
     72 };
     73 
     74 struct mon_regs {
     75 	u_int32_t mon_csr;
     76 	u_int32_t mon_1;
     77 	u_int32_t mon_data;
     78 };
     79 
     80 static int attached = 0;
     81 
     82 int nextkbd_match(device_t, cfdata_t, void *);
     83 void nextkbd_attach(device_t, device_t, void *);
     84 
     85 int nextkbc_cnattach(bus_space_tag_t);
     86 
     87 CFATTACH_DECL_NEW(nextkbd, sizeof(struct nextkbd_softc),
     88     nextkbd_match, nextkbd_attach, NULL, NULL);
     89 
     90 int	nextkbd_enable(void *, int);
     91 void	nextkbd_set_leds(void *, int);
     92 int	nextkbd_ioctl(void *, u_long, void *, int, struct lwp *);
     93 
     94 const struct wskbd_accessops nextkbd_accessops = {
     95 	nextkbd_enable,
     96 	nextkbd_set_leds,
     97 	nextkbd_ioctl,
     98 };
     99 
    100 void	nextkbd_cngetc(void *, u_int *, int *);
    101 void	nextkbd_cnpollc(void *, int);
    102 
    103 const struct wskbd_consops nextkbd_consops = {
    104 	nextkbd_cngetc,
    105 	nextkbd_cnpollc,
    106 };
    107 
    108 const struct wskbd_mapdata nextkbd_keymapdata = {
    109 	nextkbd_keydesctab,
    110 	KB_US,
    111 };
    112 
    113 static int nextkbd_read_data(struct nextkbd_internal *);
    114 static int nextkbd_decode(struct nextkbd_internal *, int, u_int *, int *);
    115 
    116 static struct nextkbd_internal nextkbd_consdata;
    117 static int nextkbd_is_console(bus_space_tag_t);
    118 
    119 int nextkbdhard(void *);
    120 
    121 static int
    122 nextkbd_is_console(bus_space_tag_t bst)
    123 {
    124 	return (nextkbd_consdata.isconsole && (bst == nextkbd_consdata.iot));
    125 }
    126 
    127 int
    128 nextkbd_match(device_t parent, cfdata_t match, void *aux)
    129 {
    130 	struct intio_attach_args *ia = (struct intio_attach_args *)aux;
    131 
    132 	if (attached)
    133 		return(0);
    134 
    135 	ia->ia_addr = (void *)NEXT_P_MON;
    136 
    137 	return(1);
    138 }
    139 
    140 void
    141 nextkbd_attach(device_t parent, device_t self, void *aux)
    142 {
    143 	struct nextkbd_softc *sc = device_private(self);
    144 	struct intio_attach_args *ia = (struct intio_attach_args *)aux;
    145 	int isconsole;
    146 	struct wskbddev_attach_args a;
    147 
    148 	printf("\n");
    149 
    150 	isconsole = nextkbd_is_console(ia->ia_bst); /* XXX */
    151 
    152 	if (isconsole) {
    153 		sc->id = &nextkbd_consdata;
    154 	} else {
    155 		sc->id = kmem_zalloc(sizeof(struct nextkbd_internal),
    156 				KM_SLEEP);
    157 
    158 		sc->id->iot = ia->ia_bst;
    159 		if (bus_space_map(sc->id->iot, NEXT_P_MON,
    160 				sizeof(struct mon_regs),
    161 				0, &sc->id->ioh)) {
    162 			printf("%s: can't map mon status control register\n",
    163 					device_xname(self));
    164 			return;
    165 		}
    166 	}
    167 
    168 	sc->id->t_sc = sc; /* set back pointer */
    169 
    170 	isrlink_autovec(nextkbdhard, sc, NEXT_I_IPL(NEXT_I_KYBD_MOUSE), 0, NULL);
    171 
    172 	INTR_ENABLE(NEXT_I_KYBD_MOUSE);
    173 
    174 	a.console = isconsole;
    175 	a.keymap = &nextkbd_keymapdata;
    176 	a.accessops = &nextkbd_accessops;
    177 	a.accesscookie = sc;
    178 
    179 	/*
    180 	 * Attach the wskbd, saving a handle to it.
    181 	 * XXX XXX XXX
    182 	 */
    183 	sc->sc_wskbddev = config_found(self, &a, wskbddevprint, CFARGS_NONE);
    184 
    185 	attached = 1;
    186 }
    187 
    188 int
    189 nextkbd_enable(void *v, int on)
    190 {
    191 	/* XXX not sure if this should do anything */
    192 	/* printf("nextkbd_enable %d\n", on); */
    193 	return 0;
    194 }
    195 
    196 void
    197 nextkbd_set_leds(void *v, int leds)
    198 {
    199 	struct nextkbd_softc *sc = v;
    200 	uint32_t hw_leds = 0;
    201 	int s;
    202 
    203 	sc->sc_leds &= ~ NEXT_WSKBD_LEDS;
    204 	sc->sc_leds |= (leds & NEXT_WSKBD_LEDS);
    205 
    206 	if (sc->sc_leds & WSKBD_LED_CAPS) {
    207 		hw_leds |= 0x30000;
    208 	}
    209 
    210 	s = spltty();
    211 	bus_space_write_1(sc->id->iot, sc->id->ioh, 3, 0xc5);
    212 	/* @@@ need to add:
    213 	   if bit 7 of @ioh+0 set:
    214 	     repeat 2
    215 	       wait until bit 6 of @ioh+2 clears
    216 	*/
    217 	bus_space_write_4(sc->id->iot, sc->id->ioh, 4, hw_leds);
    218 	/* @@@ need to add:
    219 	   wait until bit 4 of @ioh+0 (@ioh+2 if bit 7 was set above)
    220 	     clears
    221 	*/
    222 	splx(s);
    223 
    224 	return;
    225 }
    226 
    227 int
    228 nextkbd_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
    229 {
    230 	struct nextkbd_softc *sc = v;
    231 
    232 	switch (cmd) {
    233 	case WSKBDIO_GTYPE:
    234 		/* XXX */
    235 		*(int *)data = WSKBD_TYPE_NEXT;
    236 		return (0);
    237 	case WSKBDIO_SETLEDS:
    238 		nextkbd_set_leds (sc, *(int *)data);
    239 		return (0);
    240 	case WSKBDIO_GETLEDS:
    241 		*(int *)data = sc->sc_leds & NEXT_WSKBD_LEDS;
    242 		return (0);
    243 	case WSKBDIO_COMPLEXBELL:
    244 		return (0);
    245 	}
    246 	return EPASSTHROUGH;
    247 }
    248 
    249 int
    250 nextkbdhard(void *arg)
    251 {
    252 	struct nextkbd_softc *sc = arg;
    253 	int type, key, val;
    254 
    255 	if (!INTR_OCCURRED(NEXT_I_KYBD_MOUSE)) return 0;
    256 
    257 #define CSR_INT 0x00800000
    258 #define CSR_DATA 0x00400000
    259 
    260 #define KD_KEYMASK			0x007f
    261 #define KD_DIRECTION		0x0080 /* pressed or released */
    262 #define KD_CNTL					0x0100
    263 #define KD_LSHIFT				0x0200
    264 #define KD_RSHIFT				0x0400
    265 #define KD_LCOMM				0x0800
    266 #define KD_RCOMM				0x1000
    267 #define KD_LALT					0x2000
    268 #define KD_RALT					0x4000
    269 #define KD_VALID				0x8000 /* only set for scancode keys ? */
    270 #define KD_MODS					0x4f00
    271 
    272 	val = nextkbd_read_data(sc->id);
    273 	if ((val != -1) && nextkbd_decode(sc->id, val, &type, &key)) {
    274 		wskbd_input(sc->sc_wskbddev, type, key);
    275 	}
    276 	return(1);
    277 }
    278 
    279 int
    280 nextkbd_cnattach(bus_space_tag_t bst)
    281 {
    282 	bus_space_handle_t bsh;
    283 
    284 	if (bus_space_map(bst, NEXT_P_MON, sizeof(struct mon_regs),
    285 			0, &bsh))
    286 		return (ENXIO);
    287 
    288 	memset(&nextkbd_consdata, 0, sizeof(nextkbd_consdata));
    289 
    290 	nextkbd_consdata.iot = bst;
    291 	nextkbd_consdata.ioh = bsh;
    292 	nextkbd_consdata.isconsole = 1;
    293 
    294 	wskbd_cnattach(&nextkbd_consops, &nextkbd_consdata,
    295 			&nextkbd_keymapdata);
    296 
    297 	return (0);
    298 }
    299 
    300 void
    301 nextkbd_cngetc(void *v, u_int *type, int *data)
    302 {
    303 	struct nextkbd_internal *t = v;
    304 	int val;
    305 
    306 	for (;;) {
    307 		if (INTR_OCCURRED(NEXT_I_KYBD_MOUSE)) {
    308 			val = nextkbd_read_data(t);
    309 			if ((val != -1) && nextkbd_decode(t, val, type, data))
    310 				return;
    311 		}
    312 	}
    313 }
    314 
    315 void
    316 nextkbd_cnpollc(void *v, int on)
    317 {
    318 	struct nextkbd_internal *t = v;
    319 
    320 	t->polling = on;
    321 	if (on) {
    322 		INTR_DISABLE(NEXT_I_KYBD_MOUSE);
    323 	} else {
    324 		INTR_ENABLE(NEXT_I_KYBD_MOUSE);
    325 	}
    326 
    327 }
    328 
    329 static int
    330 nextkbd_read_data(struct nextkbd_internal *id)
    331 {
    332 	unsigned char device;
    333 	struct mon_regs stat = { 0 };
    334 
    335 	bus_space_read_region_4(id->iot, id->ioh, 0, &stat, 3);
    336 	if ((stat.mon_csr & CSR_INT) && (stat.mon_csr & CSR_DATA)) {
    337 		stat.mon_csr &= ~CSR_INT;
    338 		id->num_ints++;
    339 		bus_space_write_4(id->iot, id->ioh, 0, stat.mon_csr);
    340 		device = stat.mon_data >> 28;
    341 		if (device != 1) return (-1); /* XXX: mouse */
    342 		return (stat.mon_data & 0xffff);
    343 	}
    344 	return (-1);
    345 }
    346 
    347 static int
    348 nextkbd_decode(struct nextkbd_internal *id, int datain, u_int *type,
    349     int *dataout)
    350 {
    351 	/* printf("datain %08x mods %08x\n", datain, id->mods); */
    352 
    353 	if ((datain ^ id->mods) & KD_LSHIFT) {
    354 		id->mods ^= KD_LSHIFT;
    355 		*dataout = 90;
    356 		if (datain & KD_LSHIFT)
    357 			*type = WSCONS_EVENT_KEY_DOWN;
    358 		else
    359 			*type = WSCONS_EVENT_KEY_UP;
    360 	} else if ((datain ^ id->mods) & KD_RSHIFT) {
    361 		id->mods ^= KD_RSHIFT;
    362 		*dataout = 91;
    363 		if (datain & KD_RSHIFT)
    364 			*type = WSCONS_EVENT_KEY_DOWN;
    365 		else
    366 			*type = WSCONS_EVENT_KEY_UP;
    367 	} else if ((datain ^ id->mods) & KD_LALT) {
    368 		id->mods ^= KD_LALT;
    369 		*dataout = 92;
    370 		if (datain & KD_LALT)
    371 			*type = WSCONS_EVENT_KEY_DOWN;
    372 		else
    373 			*type = WSCONS_EVENT_KEY_UP;
    374 	} else if ((datain ^ id->mods) & KD_RALT) {
    375 		id->mods ^= KD_RALT;
    376 		*dataout = 93;
    377 		if (datain & KD_RALT)
    378 			*type = WSCONS_EVENT_KEY_DOWN;
    379 		else
    380 			*type = WSCONS_EVENT_KEY_UP;
    381 	} else if ((datain ^ id->mods) & KD_CNTL) {
    382 		id->mods ^= KD_CNTL;
    383 		*dataout = 94;
    384 		if (datain & KD_CNTL)
    385 			*type = WSCONS_EVENT_KEY_DOWN;
    386 		else
    387 			*type = WSCONS_EVENT_KEY_UP;
    388 	} else if ((datain ^ id->mods) & KD_LCOMM) {
    389 		id->mods ^= KD_LCOMM;
    390 		*dataout = 95;
    391 		if (datain & KD_LCOMM)
    392 			*type = WSCONS_EVENT_KEY_DOWN;
    393 		else
    394 			*type = WSCONS_EVENT_KEY_UP;
    395 	} else if ((datain ^ id->mods) & KD_RCOMM) {
    396 		id->mods ^= KD_RCOMM;
    397 		*dataout = 96;
    398 		if (datain & KD_RCOMM)
    399 			*type = WSCONS_EVENT_KEY_DOWN;
    400 		else
    401 			*type = WSCONS_EVENT_KEY_UP;
    402 	} else if (datain & KD_KEYMASK) {
    403 		if (datain & KD_DIRECTION)
    404 			*type = WSCONS_EVENT_KEY_UP;
    405 		else
    406 			*type = WSCONS_EVENT_KEY_DOWN;
    407 
    408 		*dataout = (datain & KD_KEYMASK);
    409 	} else {
    410 		*dataout = 0;
    411 	}
    412 
    413 	return 1;
    414 }
    415