NetBSD-5.0.2/sys/dev/acpi/pckbc_acpi.c
/* $NetBSD: pckbc_acpi.c,v 1.30.10.1 2009/09/05 13:10:18 bouyer 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.
*/
/*
* ACPI attachment for the PC Keyboard Controller driver.
*
* This is a little wonky. The keyboard controller actually
* has 2 ACPI 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_acpi.c,v 1.30.10.1 2009/09/05 13:10:18 bouyer 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 <dev/acpi/acpivar.h>
static int pckbc_acpi_match(device_t, cfdata_t, void *);
static void pckbc_acpi_attach(device_t, device_t, void *);
struct pckbc_acpi_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_acpi_softc *first;
extern struct cfdriver pckbc_cd;
CFATTACH_DECL_NEW(pckbc_acpi, sizeof(struct pckbc_acpi_softc),
pckbc_acpi_match, pckbc_acpi_attach, NULL, NULL);
static void pckbc_acpi_intr_establish(struct pckbc_softc *, pckbc_slot_t);
static void pckbc_acpi_finish_attach(device_t);
/*
* Supported Device IDs
*/
static const char * const pckbc_acpi_ids_kbd[] = {
"PNP03??", /* Standard PC KBD port */
NULL
};
static const char * const pckbc_acpi_ids_ms[] = {
"PNP0F03",
"PNP0F0E",
"PNP0F12",
"PNP0F13",
"PNP0F19",
"PNP0F1B",
"PNP0F1C",
"SYN0302",
NULL
};
/*
* pckbc_acpi_match: autoconf(9) match routine
*/
static int
pckbc_acpi_match(device_t parent, cfdata_t match, void *aux)
{
struct acpi_attach_args *aa = aux;
int rv;
if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
return 0;
rv = acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_kbd);
if (rv)
return rv;
rv = acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_ms);
if (rv)
return rv;
return 0;
}
static void
pckbc_acpi_attach(device_t parent, device_t self, void *aux)
{
struct pckbc_acpi_softc *psc = device_private(self);
struct pckbc_softc *sc = &psc->sc_pckbc;
struct pckbc_internal *t;
struct acpi_attach_args *aa = aux;
bus_space_handle_t ioh_d, ioh_c;
pckbc_slot_t peer;
struct acpi_resources res;
struct acpi_io *io0, *io1, *ioswap;
struct acpi_irq *irq;
ACPI_STATUS rv;
sc->sc_dv = self;
psc->sc_ic = aa->aa_ic;
if (acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_kbd)) {
psc->sc_slot = PCKBC_KBD_SLOT;
peer = PCKBC_AUX_SLOT;
} else if (acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_ms)) {
psc->sc_slot = PCKBC_AUX_SLOT;
peer = PCKBC_KBD_SLOT;
} else {
aprint_error(": unknown port!\n");
panic("pckbc_acpi_attach: impossible");
}
aprint_naive("\n");
aprint_normal(": %s port\n", pckbc_slot_names[psc->sc_slot]);
/* parse resources */
rv = acpi_resource_parse(sc->sc_dv, aa->aa_node->ad_handle, "_CRS",
&res, &acpi_resource_parse_ops_default);
if (ACPI_FAILURE(rv))
return;
/* find our IRQ */
irq = acpi_res_irq(&res, 0);
if (irq == NULL) {
aprint_error_dev(self, "unable to find irq resource\n");
goto out;
}
psc->sc_irq = irq->ar_irq;
psc->sc_ist = (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL;
if (psc->sc_slot == PCKBC_KBD_SLOT)
first = psc;
if ((!first || !first->sc_pckbc.id) &&
(psc->sc_slot == PCKBC_KBD_SLOT)) {
io0 = acpi_res_io(&res, 0);
io1 = acpi_res_io(&res, 1);
if (io0 == NULL || io1 == NULL) {
aprint_error_dev(self,
"unable to find i/o resources\n");
goto out;
}
/*
* JDM: Some firmware doesn't report resources in the order we
* expect; sort IO resources here (lowest first)
*/
if (io0->ar_base > io1->ar_base) {
ioswap = io0;
io0 = io1;
io1 = ioswap;
}
if (pckbc_is_console(aa->aa_iot, io0->ar_base)) {
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 (bus_space_map(aa->aa_iot, io0->ar_base,
io0->ar_length, 0, &ioh_d) ||
bus_space_map(aa->aa_iot, io1->ar_base,
io1->ar_length, 0, &ioh_c)) {
aprint_error_dev(self,
"unable to map registers\n");
goto out;
}
t = malloc(sizeof(struct pckbc_internal),
M_DEVBUF, M_WAITOK|M_ZERO);
t->t_iot = aa->aa_iot;
t->t_ioh_d = ioh_d;
t->t_ioh_c = ioh_c;
t->t_addr = io0->ar_base;
t->t_cmdbyte = KC8_CPU; /* Enable ports */
callout_init(&t->t_cleanup, 0);
}
t->t_sc = &first->sc_pckbc;
first->sc_pckbc.id = t;
if (!pmf_device_register(self, NULL, pckbc_resume))
aprint_error_dev(self,
"couldn't establish power handler\n");
first->sc_pckbc.intr_establish = pckbc_acpi_intr_establish;
config_defer(first->sc_pckbc.sc_dv, pckbc_acpi_finish_attach);
}
out:
if (!pmf_device_register(self, NULL, NULL))
aprint_error_dev(self, "couldn't establish power handler\n");
acpi_resource_cleanup(&res);
}
static void
pckbc_acpi_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot)
{
struct pckbc_acpi_softc *psc;
isa_chipset_tag_t ic = NULL;
void *rv = NULL;
int irq = 0, ist = 0; /* XXX: gcc */
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]);
}
}
static void
pckbc_acpi_finish_attach(device_t dv)
{
pckbc_attach(device_private(dv));
}