/*	$NetBSD: pckbc_js.c,v 1.1 2002/01/31 17:34:51 uwe Exp $ */

/*
 * Copyright (c) 2002 Valeriy E. Ushakov
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>

#include <machine/autoconf.h>
#include <machine/bus.h>
#include <machine/intr.h>

#include <dev/ic/i8042reg.h>
#include <dev/ic/pckbcvar.h> 
#include <dev/pckbc/pckbdvar.h>

#include <sparc/dev/ebusreg.h>
#include <sparc/dev/ebusvar.h>


struct pckbc_js_softc {
	struct pckbc_softc jsc_pckbc;	/* real "pckbc" softc */

	/* kbd and mouse share interrupt in both mr.coffee and krups */
	u_int32_t jsc_intr;
	int jsc_establised;
};


static int	pckbc_obio_match(struct device *, struct cfdata *, void *);
static void	pckbc_obio_attach(struct device *, struct device *, void *);

static int	pckbc_ebus_match(struct device *, struct cfdata *, void *);
static void	pckbc_ebus_attach(struct device *, struct device *, void *);

static void	pckbc_js_attach_common(	struct pckbc_js_softc *,
					bus_space_tag_t, bus_addr_t, int, int);
static void	pckbc_js_intr_establish(struct pckbc_softc *, pckbc_slot_t);

/* Mr.Coffee */
struct cfattach pckbc_obio_ca = {
	sizeof(struct pckbc_js_softc), pckbc_obio_match, pckbc_obio_attach
};

/* ms-IIep */
struct cfattach pckbc_ebus_ca = {
	sizeof(struct pckbc_js_softc), pckbc_ebus_match, pckbc_ebus_attach
};


#define PCKBC_PROM_DEVICE_NAME "8042"

static int
pckbc_obio_match(parent, cf, aux)
	struct device *parent;
	struct cfdata *cf;
	void *aux;
{
	union obio_attach_args *uoba = aux;
	struct sbus_attach_args *sa = &uoba->uoba_sbus;

	return (strcmp(sa->sa_name, PCKBC_PROM_DEVICE_NAME) == 0);
}

static int
pckbc_ebus_match(parent, cf, aux)
	struct device *parent;
	struct cfdata *cf;
	void *aux;
{
	struct ebus_attach_args *ea = aux;

	return (strcmp(ea->ea_name, PCKBC_PROM_DEVICE_NAME) == 0);
}


static void
pckbc_obio_attach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct pckbc_js_softc *jsc = (struct pckbc_js_softc *)self;
	union obio_attach_args *uoba = aux;
	struct sbus_attach_args *sa = &uoba->uoba_sbus;
	bus_space_tag_t iot;
	bus_addr_t ioaddr;
	int intr, isconsole;

	iot = sa->sa_bustag;
	ioaddr = BUS_ADDR(sa->sa_slot, sa->sa_offset);
	intr = sa->sa_nintr ? sa->sa_pri : /* level */ 13;

	/*
	 * TODO:
	 * . on OFW machines stdin is keyboard node, not 8042 node
	 * . on OBP machines 8042 node is faked by boot's prompatch
	 *   and PROM's stdin points to zs keyboard (add prom patch?)
	 * . we probably want the stdout node to control whether
	 *   console goes to serial
	 */
	isconsole = 1;

	pckbc_js_attach_common(jsc, iot, ioaddr, intr, isconsole);
}

static void
pckbc_ebus_attach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct pckbc_js_softc *jsc = (struct pckbc_js_softc *)self;
	struct ebus_attach_args *ea = aux;
	bus_space_tag_t iot;
	bus_addr_t ioaddr;
	int intr, isconsole;

	iot = ea->ea_bustag;
	ioaddr = BUS_ADDR(ea->ea_reg[0].bar, ea->ea_reg[0].offset);
	intr = ea->ea_nintr ? ea->ea_intr[0] : /* line */ 0;

	/* TODO: see comment in pckbc_obio_attach above */
	isconsole = 1;

	pckbc_js_attach_common(jsc, iot, ioaddr, intr, isconsole);
}


static void
pckbc_js_attach_common(jsc, iot, ioaddr, intr, isconsole)
	struct pckbc_js_softc *jsc;
	bus_space_tag_t iot;
	bus_addr_t ioaddr;
	int intr;
	int isconsole;
{
	struct pckbc_softc *sc = (struct pckbc_softc *)jsc;
	struct pckbc_internal *t;

	jsc->jsc_pckbc.intr_establish = pckbc_js_intr_establish;
	jsc->jsc_intr = intr;
	jsc->jsc_establised = 0;

	if (isconsole) {
		int status;

		status = pckbc_cnattach(iot, ioaddr, KBCMDP, PCKBC_KBD_SLOT);
		if (status == 0)
			printf(": cnattach ok");
		else
			printf(": cnattach %d", status);
	}

	if (pckbc_is_console(iot, ioaddr)) {
		t = &pckbc_consdata;
		pckbc_console_attached = 1;
	} else {
		bus_space_handle_t ioh_d, ioh_c;

		if (bus_space_map(iot, ioaddr + KBDATAP, 1, 0, &ioh_d) != 0) {
			printf(": unable to map data register\n");
			return;
		}

		if (bus_space_map(iot, ioaddr + KBCMDP,  1, 0, &ioh_c) != 0) {
			bus_space_unmap(iot, ioh_d, 1);
			printf(": unable to map cmd register\n");
			return;
		}

		t = malloc(sizeof(struct pckbc_internal), M_DEVBUF, M_WAITOK);
		memset(t, 0, sizeof(struct pckbc_internal));
		t->t_iot = iot;
		t->t_ioh_d = ioh_d;
		t->t_ioh_c = ioh_c;
		t->t_addr = ioaddr;
		t->t_cmdbyte = KC8_CPU; /* initial command: enable ports */
		callout_init(&t->t_cleanup);

		(void) pckbc_poll_data1(t, PCKBC_KBD_SLOT, 0); /* flush */

		if (pckbc_send_cmd(iot, ioh_c, KBC_SELFTEST) == 0)
			printf(": unable to request self test");
		else {
			int response;

			response = pckbc_poll_data1(t, PCKBC_KBD_SLOT, 0);
			if (response == 0x55)
				printf(": selftest ok");
			else
				printf(": selftest failed (0x%02x)", response);
		}
	}

	/* crosslink */
	t->t_sc = sc;
	sc->id = t;

	/* finish off the attach */
	printf("\n");
	pckbc_attach(sc);
}


/*
 * Keyboard and mouse share the interrupt
 * so don't install interrupt handler twice.
 */
static void
pckbc_js_intr_establish(sc, slot)
	struct pckbc_softc *sc;
	pckbc_slot_t slot;
{
	struct pckbc_js_softc *jsc = (struct pckbc_js_softc *)sc;
	void *res;

	if (jsc->jsc_establised) {
#ifdef DEBUG
		printf("%s: %s slot shares interrupt (already established)\n",
		       sc->sc_dv.dv_xname, pckbc_slot_names[slot]);
#endif
		return;
	}

	res = bus_intr_establish(sc->id->t_iot, jsc->jsc_intr,
				 IPL_TTY, 0, pckbcintr, sc);
	if (res == NULL)
		printf("%s: unable to establish %s slot interrupt\n",
		       sc->sc_dv.dv_xname, pckbc_slot_names[slot]);
	else
		jsc->jsc_establised = 1;
}


/*
 * MD hook for use without MI wscons.
 * Called by pckbc_cnattach().
 */
int
pckbc_machdep_cnattach(constag, slot)
    pckbc_tag_t constag;
    pckbc_slot_t slot;
{

#if !defined(__HAVE_NWSCONS) && defined(MSIIEP)
	/* we do use wscons on krups! */
	return (pckbd_cnattach(constag, slot));
#else
	return (0);
#endif
}