/* $NetBSD: pckbc_pnpbios.c,v 1.18 2014/03/23 02:57:58 christos Exp $ */

/* $NetBSD: pckbc_pnpbios.c,v 1.18 2014/03/23 02:57:58 christos Exp $ */

/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/

/*
* PNPBIOS attachment for the PC Keyboard Controller driver.
*
* This is a little wonky. The keyboard controller actually
* has 2 PNPBIOS nodes: one for the controller and the keyboard
* interrupt, and one for the aux port (mouse) interrupt.
*
* For this reason, we actually attach *two* instances of this
* driver. After both of them have been found, then we attach
* sub-devices.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pckbc_pnpbios.c,v 1.18 2014/03/23 02:57:58 christos Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/errno.h>
#include <sys/queue.h>
#include <sys/bus.h>

#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>

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

#include <i386/pnpbios/pnpbiosvar.h>

int pckbc_pnpbios_match(device_t, cfdata_t, void *);
void pckbc_pnpbios_attach(device_t, device_t, void *);

struct pckbc_pnpbios_softc {
struct pckbc_softc sc_pckbc;

isa_chipset_tag_t sc_ic;
int sc_irq;
int sc_ist;
pckbc_slot_t sc_slot;
};

/* Save first port: */
static struct pckbc_pnpbios_softc *first;

extern struct cfdriver pckbc_cd;

CFATTACH_DECL_NEW(pckbc_pnpbios, sizeof(struct pckbc_pnpbios_softc),
pckbc_pnpbios_match, pckbc_pnpbios_attach, NULL, NULL);

void pckbc_pnpbios_intr_establish(struct pckbc_softc *, pckbc_slot_t);
static void pckbc_pnpbios_finish_attach(device_t);

int
pckbc_pnpbios_match(device_t parent, cfdata_t match, void *aux)
{
struct pnpbiosdev_attach_args *aa = aux;

if (strcmp(aa->idstr, "PNP0303") == 0 ||
strcmp(aa->idstr, "PNP0320") == 0) /* Japanese 106 */
return (1); /* plus more? */
if (strcmp(aa->idstr, "PNP0F13") == 0)
return (1);

return (0);
}

void
pckbc_pnpbios_attach(device_t parent, device_t self, void *aux)
{
struct pckbc_pnpbios_softc *psc = device_private(self);
struct pckbc_softc *sc = &psc->sc_pckbc;
struct pckbc_internal *t;
struct pnpbiosdev_attach_args *aa = aux;
bus_space_tag_t iot;
bus_space_handle_t ioh_d, ioh_c;
int iobase;

sc->sc_dv = self;
if (strncmp(aa->idstr, "PNP03", 5) == 0) {
psc->sc_slot = PCKBC_KBD_SLOT;
} else if (strcmp(aa->idstr, "PNP0F13") == 0) {
psc->sc_slot = PCKBC_AUX_SLOT;
} else {
aprint_error(": unknown port!\n");
panic("pckbc_pnpbios_attach: impossible");
}

aprint_normal(": %s port\n", pckbc_slot_names[psc->sc_slot]);

if (pnpbios_getirqnum(aa->pbt, aa->resc, 0, &psc->sc_irq,
&psc->sc_ist) != 0) {
aprint_error_dev(self, "unable to get IRQ number or type\n");
return;
}

psc->sc_ic = aa->ic;

if (!first)
first = psc;

if (!first->sc_pckbc.id) {

if (pnpbios_getiobase(aa->pbt, aa->resc, 0, &iot, &iobase))
return;

if (pckbc_is_console(iot, iobase)) {
t = &pckbc_consdata;
ioh_d = t->t_ioh_d;
ioh_c = t->t_ioh_c;
pckbc_console_attached = 1;
/* t->t_cmdbyte was initialized by cnattach */
} else {
if (pnpbios_io_map(aa->pbt, aa->resc, 0,
&iot, &ioh_d) ||
pnpbios_io_map(aa->pbt, aa->resc, 1,
&iot, &ioh_c))
panic("pckbc_pnpbios_attach: couldn't map");

t = malloc(sizeof(struct pckbc_internal),
M_DEVBUF, M_WAITOK);
memset(t, 0, sizeof(*t));
t->t_iot = iot;
t->t_ioh_d = ioh_d;
t->t_ioh_c = ioh_c;
t->t_addr = iobase;
t->t_cmdbyte = KC8_CPU; /* Enable ports */
callout_init(&t->t_cleanup, 0);
}

t->t_sc = &first->sc_pckbc;
first->sc_pckbc.id = t;

first->sc_pckbc.intr_establish = pckbc_pnpbios_intr_establish;
config_defer(first->sc_pckbc.sc_dv,
pckbc_pnpbios_finish_attach);
}
}

static void
pckbc_pnpbios_finish_attach(device_t dv)
{

pckbc_attach(device_private(dv));
}

void
pckbc_pnpbios_intr_establish(struct pckbc_softc *sc,
pckbc_slot_t slot)
{
struct pckbc_pnpbios_softc *psc;
isa_chipset_tag_t ic = NULL;
void *rv = NULL;
int irq, ist;
int i;

/*
* Note we're always called with sc == first.
*/
for (i = 0; i < pckbc_cd.cd_ndevs; i++) {
psc = device_lookup_private(&pckbc_cd, i);
if (psc && psc->sc_slot == slot) {
irq = psc->sc_irq;
ist = psc->sc_ist;
ic = psc->sc_ic;
break;
}
}
if (i < pckbc_cd.cd_ndevs)
rv = isa_intr_establish(ic, irq, ist, IPL_TTY, pckbcintr, sc);
if (rv == NULL) {
aprint_error_dev(sc->sc_dv,
"unable to establish interrupt for %s slot\n",
pckbc_slot_names[slot]);
} else {
aprint_normal_dev(sc->sc_dv, "using irq %d for %s slot\n",
irq, pckbc_slot_names[slot]);
}
}