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/* $OpenBSD: pckbc_ebus.c,v 1.4 2003/06/02 20:02:49 jason Exp $ */
/*
* Copyright (c) 2002 Jason L. Wright (jason@thought.net)
* 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.
*
* 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.
*/
/*
* Driver for i8042 keyboard controller found on some PCI based
* UltraSPARCs
*
* Effort sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F30602-01-2-0537.
*
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/openfirm.h>
#include <sparc64/dev/ebusreg.h>
#include <sparc64/dev/ebusvar.h>
#include <dev/ic/i8042reg.h>
#include <dev/ic/pckbcvar.h>
struct pckbc_ebus_softc {
struct pckbc_softc sc_pckbc;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
bus_space_handle_t sc_ioh_c;
bus_space_handle_t sc_ioh_d;
void *sc_irq[2];
int sc_node;
};
int pckbc_ebus_match(struct device *, void *, void *);
void pckbc_ebus_attach(struct device *, struct device *, void *);
struct cfattach pckbc_ebus_ca = {
sizeof(struct pckbc_ebus_softc), pckbc_ebus_match, pckbc_ebus_attach
};
void pckbc_ebus_intr_establish(struct pckbc_softc *, pckbc_slot_t);
int pckbc_ebus_is_console(struct pckbc_ebus_softc *);
int
pckbc_ebus_match(parent, match, aux)
struct device *parent;
void *match;
void *aux;
{
struct ebus_attach_args *ea = aux;
if (strcmp(ea->ea_name, "8042") == 0)
return (1);
return (0);
}
void
pckbc_ebus_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct pckbc_ebus_softc *sc = (void *)self;
struct pckbc_softc *psc = &sc->sc_pckbc;
struct ebus_attach_args *ea = aux;
struct pckbc_internal *t = NULL;
int console;
sc->sc_iot = ea->ea_iotag;
sc->sc_node = ea->ea_node;
console = pckbc_ebus_is_console(sc);
if (console) {
if (pckbc_cnattach(sc->sc_iot,
EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), KBCMDP,
PCKBC_KBD_SLOT) == 0) {
t = &pckbc_consdata;
pckbc_console_attached = 1;
sc->sc_ioh_c = t->t_ioh_c;
sc->sc_ioh_d = t->t_ioh_d;
} else
console = 0;
}
if (console == 0) {
/* Use prom address if available, otherwise map it. */
if (ea->ea_nvaddrs)
bus_space_map(sc->sc_iot, ea->ea_vaddrs[0], 0, 0,
&sc->sc_ioh);
else if (ebus_bus_map(sc->sc_iot, 0,
EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), ea->ea_regs[0].size,
BUS_SPACE_MAP_LINEAR, 0, &sc->sc_ioh) != 0) {
printf(": can't map register space\n");
return;
}
if (bus_space_subregion(sc->sc_iot, sc->sc_ioh,
KBCMDP, sizeof(u_int32_t), &sc->sc_ioh_c) != 0) {
printf(": couldn't get cmd subregion\n");
return;
}
if (bus_space_subregion(sc->sc_iot, sc->sc_ioh,
KBDATAP, sizeof(u_int32_t), &sc->sc_ioh_d) != 0) {
printf(": couldn't get data subregion\n");
return;
}
t = malloc(sizeof(struct pckbc_internal), M_DEVBUF, M_NOWAIT);
bzero(t, sizeof(struct pckbc_internal));
}
psc->intr_establish = pckbc_ebus_intr_establish;
sc->sc_irq[0] = bus_intr_establish(ea->ea_iotag, ea->ea_intrs[0],
IPL_TTY, 0, pckbcintr, psc);
if (sc->sc_irq[0] == NULL) {
printf(": couldn't get intr0\n");
return;
}
sc->sc_irq[1] = bus_intr_establish(ea->ea_iotag, ea->ea_intrs[1],
IPL_TTY, 0, pckbcintr, psc);
if (sc->sc_irq[1] == NULL) {
printf(": couldn't get intr1\n");
return;
}
t->t_iot = sc->sc_iot;
t->t_ioh_c = sc->sc_ioh_c;
t->t_ioh_d = sc->sc_ioh_d;
t->t_cmdbyte = KC8_CPU;
t->t_sc = psc;
psc->id = t;
printf("\n");
pckbc_attach(psc);
}
int
pckbc_ebus_is_console(sc)
struct pckbc_ebus_softc *sc;
{
char *name;
int node;
/*
* Loop through the children of 8042 and see if the keyboard
* exists, and further, whether it is the console input device.
* This is almost redundant because 8042 doesn't show up in
* device tree unless a keyboard is in fact attached.
*/
for (node = OF_child(sc->sc_node); node; node = OF_peer(node)) {
name = getpropstring(node, "name");
if (name == NULL)
continue;
if (strcmp("kb_ps2", name) == 0 ||
strcmp("keyboard", name) == 0) {
if (node == OF_instance_to_package(OF_stdin()))
return (1);
}
}
return (0);
}
void
pckbc_ebus_intr_establish(psc, slot)
struct pckbc_softc *psc;
pckbc_slot_t slot;
{
/* Nothing to do, interrupts were mapped in attach. */
}
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