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/* $OpenBSD: acpicpu.c,v 1.2 2006/02/26 04:38:38 marco Exp $ */
/*
* Copyright (c) 2005 Marco Peereboom <marco@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/signalvar.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
#include <dev/acpi/acpidev.h>
#include <dev/acpi/amltypes.h>
#include <dev/acpi/dsdt.h>
#include <sys/sensors.h>
int acpicpu_match(struct device *, void *, void *);
void acpicpu_attach(struct device *, struct device *, void *);
int acpicpu_notify(struct aml_node *, int, void *);
struct acpicpu_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
struct acpi_softc *sc_acpi;
struct aml_node *sc_devnode;
int sc_pss_len;
struct acpicpu_pss *sc_pss;
};
int acpicpu_getpss(struct acpicpu_softc *);
struct cfattach acpicpu_ca = {
sizeof(struct acpicpu_softc), acpicpu_match, acpicpu_attach
};
struct cfdriver acpicpu_cd = {
NULL, "acpicpu", DV_DULL
};
int
acpicpu_match(struct device *parent, void *match, void *aux)
{
struct acpi_attach_args *aa = aux;
struct cfdata *cf = match;
/* sanity */
if (aa->aaa_name == NULL ||
strcmp(aa->aaa_name, cf->cf_driver->cd_name) != 0 ||
aa->aaa_table != NULL)
return (0);
return (1);
}
void
acpicpu_attach(struct device *parent, struct device *self, void *aux)
{
struct acpicpu_softc *sc = (struct acpicpu_softc *)self;
struct acpi_attach_args *aa = aux;
int i;
sc->sc_acpi = (struct acpi_softc *)parent;
sc->sc_devnode = aa->aaa_node->child;
sc->sc_pss = NULL;
printf(": ");
if (acpicpu_getpss(sc)) {
/* XXX not the right test but has to do for now */
printf("can't attach, no _PSS\n");
return;
}
for (i = 0; i < sc->sc_pss_len; i++)
printf("%d MHz %d mW ", sc->sc_pss[i].pss_core_freq,
sc->sc_pss[i].pss_power);
printf("\n");
/* aml_register_notify(sc->sc_devnode->parent, aa->aaa_dev, acpicpu_notify, sc); */
}
int
acpicpu_getpss(struct acpicpu_softc *sc)
{
struct aml_value res, env;
struct acpi_context *ctx;
int i;
memset(&res, 0, sizeof(res));
memset(&env, 0, sizeof(env));
ctx = NULL;
if (aml_eval_name(sc->sc_acpi, sc->sc_devnode, "_PSS", &res, &env)) {
dnprintf(20, "%s: no _PSS\n", DEVNAME(sc));
return (1);
}
if (!sc->sc_pss)
sc->sc_pss = malloc(res.length * sizeof *sc->sc_pss, M_DEVBUF,
M_WAITOK);
memset(sc->sc_pss, 0, res.length * sizeof *sc->sc_pss);
for (i = 0; i < res.length; i++) {
sc->sc_pss[i].pss_core_freq = aml_val2int(ctx,
res.v_package[i]->v_package[0]);
sc->sc_pss[i].pss_power = aml_val2int(ctx,
res.v_package[i]->v_package[1]);
sc->sc_pss[i].pss_trans_latency = aml_val2int(ctx,
res.v_package[i]->v_package[2]);
sc->sc_pss[i].pss_bus_latency = aml_val2int(ctx,
res.v_package[i]->v_package[3]);
sc->sc_pss[i].pss_ctrl = aml_val2int(ctx,
res.v_package[i]->v_package[4]);
sc->sc_pss[i].pss_status = aml_val2int(ctx,
res.v_package[i]->v_package[5]);
}
sc->sc_pss_len = res.length;
return (0);
}
int
acpicpu_notify(struct aml_node *node, int notify_type, void *arg)
{
struct acpicpu_softc *sc = arg;
dnprintf(10, "acpicpu_notify: %.2x %s\n", notify_type,
sc->sc_devnode->parent->name);
printf("acpicpu_notify: %.2x %s\n", notify_type,
sc->sc_devnode->parent->name);
return (0);
}
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