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/* $OpenBSD: acpicpu.c,v 1.10 2006/10/12 16:38:21 jordan 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 <machine/cpu.h>
#include <machine/cpufunc.h>
#include <machine/specialreg.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;
struct acpicpu_pct sc_pct;
};
int acpicpu_getpct(struct acpicpu_softc *);
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(": %s: ", sc->sc_devnode->parent->name);
if (acpicpu_getpss(sc)) {
/* XXX not the right test but has to do for now */
printf("can't attach, no _PSS\n");
return;
}
#ifdef ACPI_DEBUG
for (i = 0; i < sc->sc_pss_len; i++) {
dnprintf(20, "%d %d %d %d %d %d\n",
sc->sc_pss[i].pss_core_freq,
sc->sc_pss[i].pss_power,
sc->sc_pss[i].pss_trans_latency,
sc->sc_pss[i].pss_bus_latency,
sc->sc_pss[i].pss_ctrl,
sc->sc_pss[i].pss_status);
}
dnprintf(20, "\n");
#endif
for (i = 0; i < sc->sc_pss_len; i++)
printf("%d%s", sc->sc_pss[i].pss_core_freq,
i < sc->sc_pss_len - 1 ? ", " : " MHz\n");
acpicpu_getpct(sc);
aml_register_notify(sc->sc_devnode->parent, NULL,
acpicpu_notify, sc);
}
int
acpicpu_getpct(struct acpicpu_softc *sc)
{
struct aml_value res;
if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_PPC", 0, NULL, &res) != 0) {
dnprintf(20, "%s: no _PPC\n", DEVNAME(sc));
printf("%s: no _PPC\n", DEVNAME(sc));
return (1);
}
dnprintf(10, "_PPC: %d\n", aml_val2int(&res));
aml_freevalue(&res);
if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_PCT", 0, NULL, &res) != 0) {
dnprintf(20, "%s: no _PCT\n", DEVNAME(sc));
printf("%s: no _PCT\n", DEVNAME(sc));
return (1);
}
if (res.length != 2) {
printf("%s: %s: invalid _PCT length\n", DEVNAME(sc),
sc->sc_devnode->parent->name);
return (1);
}
memcpy(&sc->sc_pct.pct_ctrl, res.v_package[0]->v_buffer,
sizeof sc->sc_pct.pct_ctrl);
memcpy(&sc->sc_pct.pct_status, res.v_package[1]->v_buffer,
sizeof sc->sc_pct.pct_status);
aml_freevalue(&res);
dnprintf(10, "_PCT(ctrl) : %02x %04x %02x %02x %02x %02x %016x\n",
sc->sc_pct.pct_ctrl.grd_descriptor,
sc->sc_pct.pct_ctrl.grd_length,
sc->sc_pct.pct_ctrl.grd_gas.address_space_id,
sc->sc_pct.pct_ctrl.grd_gas.register_bit_width,
sc->sc_pct.pct_ctrl.grd_gas.register_bit_offset,
sc->sc_pct.pct_ctrl.grd_gas.access_size,
sc->sc_pct.pct_ctrl.grd_gas.address);
dnprintf(10, "_PCT(status): %02x %04x %02x %02x %02x %02x %016x\n",
sc->sc_pct.pct_status.grd_descriptor,
sc->sc_pct.pct_status.grd_length,
sc->sc_pct.pct_status.grd_gas.address_space_id,
sc->sc_pct.pct_status.grd_gas.register_bit_width,
sc->sc_pct.pct_status.grd_gas.register_bit_offset,
sc->sc_pct.pct_status.grd_gas.access_size,
sc->sc_pct.pct_status.grd_gas.address);
#if 0
char pb[8];
acpi_gasio(sc->sc_acpi, ACPI_IOREAD,
sc->sc_pct.pct_ctrl.grd_gas.address_space_id,
sc->sc_pct.pct_ctrl.grd_gas.address,
1,
4,
//sc->sc_pct.pct_ctrl.grd_gas.register_bit_width >> 3,
pb);
acpi_gasio(sc->sc_acpi, ACPI_IOWRITE,
sc->sc_pct.pct_ctrl.grd_gas.address_space_id,
sc->sc_pct.pct_ctrl.grd_gas.address,
1,
4,
//sc->sc_pct.pct_ctrl.grd_gas.register_bit_width >> 3,
&sc->sc_pss[3].pss_ctrl);
acpi_gasio(sc->sc_acpi, ACPI_IOREAD,
sc->sc_pct.pct_ctrl.grd_gas.address_space_id,
sc->sc_pct.pct_ctrl.grd_gas.address,
1,
4,
//sc->sc_pct.pct_ctrl.grd_gas.register_bit_width >> 3,
pb);
printf("acpicpu: %02x %02x %02x %02x\n", pb[0], pb[1], pb[2], pb[3]);
#endif
return (0);
}
int
acpicpu_getpss(struct acpicpu_softc *sc)
{
struct aml_value res;
int i;
if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_PSS", 0, NULL, &res) != 0) {
dnprintf(20, "%s: no _PSS\n", DEVNAME(sc));
return (1);
}
if (sc->sc_pss)
free(sc->sc_pss, M_DEVBUF);
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(
res.v_package[i]->v_package[0]);
sc->sc_pss[i].pss_power = aml_val2int(
res.v_package[i]->v_package[1]);
sc->sc_pss[i].pss_trans_latency = aml_val2int(
res.v_package[i]->v_package[2]);
sc->sc_pss[i].pss_bus_latency = aml_val2int(
res.v_package[i]->v_package[3]);
sc->sc_pss[i].pss_ctrl = aml_val2int(
res.v_package[i]->v_package[4]);
sc->sc_pss[i].pss_status = aml_val2int(
res.v_package[i]->v_package[5]);
}
aml_freevalue(&res);
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);
switch (notify_type) {
case 0x80: /* _PPC changed, retrieve new values */
acpicpu_getpct(sc);
acpicpu_getpss(sc);
break;
default:
printf("%s: unhandled cpu event %x\n", DEVNAME(sc),
notify_type);
break;
}
return (0);
}
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