NetBSD/sys/arch/i386/pnpbios/pckbc_pnpbios.c

234 lines
6.5 KiB
C

/* $NetBSD: pckbc_pnpbios.c,v 1.1 2000/04/22 06:41:34 thorpej 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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/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/lock.h>
#include <machine/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(struct device *, struct cfdata *, void *);
void pckbc_pnpbios_attach(struct device *, struct device *, void *);
struct pckbc_pnpbios_softc {
struct pckbc_softc sc_pckbc;
int sc_irq;
int sc_ist;
pckbc_slot_t sc_slot;
/* Only on keyboard port... */
void *sc_ih;
struct pckbc_pnpbios_softc *sc_aux_port;
};
extern struct cfdriver pckbc_cd;
struct cfattach pckbc_pnpbios_ca = {
sizeof(struct pckbc_pnpbios_softc), pckbc_pnpbios_match,
pckbc_pnpbios_attach,
};
void pckbc_pnpbios_intr_establish(struct pckbc_softc *, pckbc_slot_t);
int
pckbc_pnpbios_match(struct device *parent,
struct cfdata *match,
void *aux)
{
struct pnpbiosdev_attach_args *aa = aux;
if (strcmp(aa->idstr, "PNP0303") == 0)
return (1);
if (strcmp(aa->idstr, "PNP0F13") == 0)
return (1);
return (0);
}
void
pckbc_pnpbios_attach(struct device *parent,
struct device *self,
void *aux)
{
struct pckbc_pnpbios_softc *psc = (void *) self, *peer_psc, *kbd_psc;
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;
pckbc_slot_t peer;
int iobase, i;
if (strcmp(aa->idstr, "PNP0303") == 0) {
psc->sc_slot = PCKBC_KBD_SLOT;
peer = PCKBC_AUX_SLOT;
} else if (strcmp(aa->idstr, "PNP0F13") == 0) {
psc->sc_slot = PCKBC_AUX_SLOT;
peer = PCKBC_KBD_SLOT;
} else {
printf(": unknown port!\n");
panic("pckbc_pnpbios_attach: impossible");
}
printf(": %s port\n", pckbc_slot_names[psc->sc_slot]);
if (pnpbios_getirqnum(aa->pbt, aa->resc, 0, &psc->sc_irq,
&psc->sc_ist) != 0) {
printf("%s: unable to get IRQ number or type\n",
sc->sc_dv.dv_xname);
return;
}
if (psc->sc_slot == PCKBC_KBD_SLOT) {
if (pnpbios_getiobase(aa->pbt, aa->resc, 0, &iot, &iobase)) {
printf("%s: can't get iobase\n", sc->sc_dv.dv_xname);
return;
}
sc->intr_establish = pckbc_pnpbios_intr_establish;
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);
}
t->t_sc = sc;
sc->id = t;
}
for (i = 0; i < pckbc_cd.cd_ndevs; i++) {
peer_psc = pckbc_cd.cd_devs[i];
if (peer_psc != NULL &&
peer_psc != psc &&
peer_psc->sc_pckbc.sc_dv.dv_parent ==
psc->sc_pckbc.sc_dv.dv_parent)
break;
peer_psc = NULL;
}
if (peer_psc != NULL) {
/*
* Have both -- finish attaching the one marked "keyboard".
*/
if (psc->sc_slot == PCKBC_KBD_SLOT) {
kbd_psc = psc;
kbd_psc->sc_aux_port = peer_psc;
} else {
kbd_psc = peer_psc;
kbd_psc->sc_aux_port = psc;
}
pckbc_attach(&kbd_psc->sc_pckbc);
}
}
void
pckbc_pnpbios_intr_establish(struct pckbc_softc *sc,
pckbc_slot_t slot)
{
struct pckbc_pnpbios_softc *psc = (void *) sc;
void *rv;
int irq, ist;
/*
* Note we're always called with the keyboard slot.
*/
if (slot == PCKBC_KBD_SLOT) {
irq = psc->sc_irq;
ist = psc->sc_ist;
} else {
irq = psc->sc_aux_port->sc_irq;
ist = psc->sc_aux_port->sc_ist;
}
rv = isa_intr_establish(0/*XXX*/, irq, ist, IPL_TTY, pckbcintr, sc);
if (rv == NULL) {
printf("%s: unable to establish interrupt for %s slot\n",
sc->sc_dv.dv_xname, pckbc_slot_names[slot]);
} else {
printf("%s: using irq %d for %s slot\n", sc->sc_dv.dv_xname,
irq, pckbc_slot_names[slot]);
}
}