xref: /src/sys/arch/evbppc/walnut/dev/pckbc_pbus.c

/*	$NetBSD: pckbc_pbus.c,v 1.5 2020/11/21 15:42:20 thorpej Exp $	*/

/*
 * Copyright 2001 Wasabi Systems, Inc.
 * All rights reserved.
 *
 * Written by Simon Burge and Eduardo Horvath for Wasabi Systems, Inc.
 *
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed for the NetBSD Project by
 *      Wasabi Systems, Inc.
 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
 *    or promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
 * 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pckbc_pbus.c,v 1.5 2020/11/21 15:42:20 thorpej Exp $");

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

#include <machine/intr.h>
#include <machine/walnut.h>

#include <arch/walnut/dev/pbusvar.h>
#include <powerpc/ibm4xx/dev/plbvar.h>

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

struct pckbc_pbus_softc {
	struct pckbc_softc sc_pckbc;

	// XXX void *sc_ih[PCKBC_NSLOTS];
	int sc_irq[PCKBC_NSLOTS];

};


static int	pckbc_pbus_probe(device_t, cfdata_t, void *);
static void	pckbc_pbus_attach(device_t, device_t, void *);
static void	pckbc_pbus_intr_establish(struct pckbc_softc *, pckbc_slot_t);

CFATTACH_DECL_NEW(pckbc_pbus, sizeof(struct pckbc_pbus_softc),
    pckbc_pbus_probe, pckbc_pbus_attach, NULL, NULL);

int pckbcfound = 0;

int
pckbc_pbus_probe(device_t parent, cfdata_t cf, void *aux)
{
	struct pbus_attach_args *paa = aux;

	/* match only pckbc devices */
	if (strcmp(paa->pb_name, cf->cf_name) != 0)
		return 0;

	return (pckbcfound < 1);
}

struct pckbc_softc *pckbc0; /* XXX */

void
pckbc_pbus_attach(device_t parent, device_t self, void *aux)
{
	struct pckbc_pbus_softc *msc = device_private(self);
	struct pckbc_softc *sc = &msc->sc_pckbc;
	struct pbus_attach_args *paa = aux;
	struct pckbc_internal *t;
	bus_space_handle_t ioh_d, ioh_c;
	bus_space_tag_t iot = paa->pb_bt;
	u_long addr = paa->pb_addr;

	sc->sc_dv = self;
	/*
	 * Set up IRQs
	 */
	msc->sc_irq[PCKBC_KBD_SLOT] = paa->pb_irq;
	msc->sc_irq[PCKBC_AUX_SLOT] = paa->pb_irq + 1;	/* XXX */

	sc->intr_establish = pckbc_pbus_intr_establish;

	if (pckbc_is_console(iot, addr)) {
		t = &pckbc_consdata;
		pckbc_console_attached = 1;
		/* t->t_cmdbyte was initialized by cnattach */
	} else {
		if (bus_space_map(iot, addr + KEY_MOUSE_DATA, 1, 0, &ioh_d) ||
		    bus_space_map(iot, addr + KEY_MOUSE_CMD, 1, 0, &ioh_c))
			panic("pckbc_attach: couldn't map");

		t = kmem_zalloc(sizeof(struct pckbc_internal), KM_SLEEP);
		t->t_iot = iot;
		t->t_ioh_d = ioh_d;
		t->t_ioh_c = ioh_c;
		t->t_addr = addr;
		t->t_cmdbyte = KC8_CPU; /* Enable ports */
	}

	t->t_sc = sc;
	sc->id = t;

	aprint_normal("\n");

	/* Finish off the attach. */
	pckbc_attach(sc);

	pckbcfound++;

	return;
}

static void
pckbc_pbus_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot)
{
	struct pckbc_pbus_softc *msc = (void *)sc;
	int irq = msc->sc_irq[slot];

	if (slot > PCKBC_NSLOTS) {
		aprint_error("pckbc_pbus_intr_establish: attempt to establish "
		    "interrupt at slot %d\n", slot);
		return;
	}

	intr_establish(irq, IST_LEVEL, IPL_SERIAL, pckbcintr, sc);
	aprint_normal_dev(sc->sc_dv, "%s slot interrupting at irq %d\n",
	    pckbc_slot_names[slot], irq);
}