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|
/* $OpenBSD: acpibat.c,v 1.55 2009/11/24 21:37:42 deraadt 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/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/sensors.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>
int acpibat_match(struct device *, void *, void *);
void acpibat_attach(struct device *, struct device *, void *);
struct cfattach acpibat_ca = {
sizeof(struct acpibat_softc), acpibat_match, acpibat_attach
};
struct cfdriver acpibat_cd = {
NULL, "acpibat", DV_DULL
};
const char *acpibat_hids[] = { ACPI_DEV_CMB, 0 };
void acpibat_monitor(struct acpibat_softc *);
void acpibat_refresh(void *);
int acpibat_getbif(struct acpibat_softc *);
int acpibat_getbst(struct acpibat_softc *);
int acpibat_notify(struct aml_node *, int, void *);
int
acpibat_match(struct device *parent, void *match, void *aux)
{
struct acpi_attach_args *aa = aux;
struct cfdata *cf = match;
/* sanity */
return (acpi_matchhids(aa, acpibat_hids, cf->cf_driver->cd_name));
}
void
acpibat_attach(struct device *parent, struct device *self, void *aux)
{
struct acpibat_softc *sc = (struct acpibat_softc *)self;
struct acpi_attach_args *aa = aux;
int64_t sta;
sc->sc_acpi = (struct acpi_softc *)parent;
sc->sc_devnode = aa->aaa_node;
if (aml_evalinteger(sc->sc_acpi, sc->sc_devnode, "_STA", 0, NULL, &sta)) {
dnprintf(10, "%s: no _STA\n", DEVNAME(sc));
return;
}
if ((sta & STA_BATTERY) != 0) {
sc->sc_bat_present = 1;
acpibat_getbif(sc);
acpibat_getbst(sc);
printf(": %s", sc->sc_devnode->name);
if (sc->sc_bif.bif_model[0])
printf(" model \"%s\"", sc->sc_bif.bif_model);
if (sc->sc_bif.bif_serial[0])
printf(" serial %s", sc->sc_bif.bif_serial);
if (sc->sc_bif.bif_type[0])
printf(" type %s", sc->sc_bif.bif_type);
if (sc->sc_bif.bif_oem[0])
printf(" oem \"%s\"", sc->sc_bif.bif_oem);
printf("\n");
} else {
sc->sc_bat_present = 0;
printf(": %s not present\n", sc->sc_devnode->name);
}
/* create sensors */
acpibat_monitor(sc);
/* populate sensors */
acpibat_refresh(sc);
aml_register_notify(sc->sc_devnode, aa->aaa_dev,
acpibat_notify, sc, ACPIDEV_POLL);
}
void
acpibat_monitor(struct acpibat_softc *sc)
{
int type;
/* assume _BIF and _BST have been called */
strlcpy(sc->sc_sensdev.xname, DEVNAME(sc),
sizeof(sc->sc_sensdev.xname));
type = sc->sc_bif.bif_power_unit ? SENSOR_AMPHOUR : SENSOR_WATTHOUR;
strlcpy(sc->sc_sens[0].desc, "last full capacity",
sizeof(sc->sc_sens[0].desc));
sc->sc_sens[0].type = type;
sensor_attach(&sc->sc_sensdev, &sc->sc_sens[0]);
sc->sc_sens[0].value = sc->sc_bif.bif_last_capacity * 1000;
strlcpy(sc->sc_sens[1].desc, "warning capacity",
sizeof(sc->sc_sens[1].desc));
sc->sc_sens[1].type = type;
sensor_attach(&sc->sc_sensdev, &sc->sc_sens[1]);
sc->sc_sens[1].value = sc->sc_bif.bif_warning * 1000;
strlcpy(sc->sc_sens[2].desc, "low capacity",
sizeof(sc->sc_sens[2].desc));
sc->sc_sens[2].type = type;
sensor_attach(&sc->sc_sensdev, &sc->sc_sens[2]);
sc->sc_sens[2].value = sc->sc_bif.bif_low * 1000;
strlcpy(sc->sc_sens[3].desc, "voltage", sizeof(sc->sc_sens[3].desc));
sc->sc_sens[3].type = SENSOR_VOLTS_DC;
sensor_attach(&sc->sc_sensdev, &sc->sc_sens[3]);
sc->sc_sens[3].value = sc->sc_bif.bif_voltage * 1000;
strlcpy(sc->sc_sens[4].desc, "battery unknown",
sizeof(sc->sc_sens[4].desc));
sc->sc_sens[4].type = SENSOR_INTEGER;
sensor_attach(&sc->sc_sensdev, &sc->sc_sens[4]);
sc->sc_sens[4].value = sc->sc_bst.bst_state;
strlcpy(sc->sc_sens[5].desc, "rate", sizeof(sc->sc_sens[5].desc));
sc->sc_sens[5].type = SENSOR_INTEGER;
sensor_attach(&sc->sc_sensdev, &sc->sc_sens[5]);
sc->sc_sens[5].value = sc->sc_bst.bst_rate;
strlcpy(sc->sc_sens[6].desc, "remaining capacity",
sizeof(sc->sc_sens[6].desc));
sc->sc_sens[6].type = type;
sensor_attach(&sc->sc_sensdev, &sc->sc_sens[6]);
sc->sc_sens[6].value = sc->sc_bst.bst_capacity * 1000;
strlcpy(sc->sc_sens[7].desc, "current voltage",
sizeof(sc->sc_sens[7].desc));
sc->sc_sens[7].type = SENSOR_VOLTS_DC;
sensor_attach(&sc->sc_sensdev, &sc->sc_sens[7]);
sc->sc_sens[7].value = sc->sc_bst.bst_voltage * 1000;
sensordev_install(&sc->sc_sensdev);
}
void
acpibat_refresh(void *arg)
{
struct acpibat_softc *sc = arg;
int i;
dnprintf(30, "%s: %s: refresh\n", DEVNAME(sc),
sc->sc_devnode->name);
if (!sc->sc_bat_present) {
for (i = 0; i < 8; i++) {
sc->sc_sens[i].value = 0;
sc->sc_sens[i].status = SENSOR_S_UNSPEC;
sc->sc_sens[i].flags = SENSOR_FINVALID;
}
/* override state */
strlcpy(sc->sc_sens[4].desc, "battery removed",
sizeof(sc->sc_sens[4].desc));
return;
}
/*
* XXX don't really need _BIF but keep it here in case we
* miss an insertion/removal event
*/
acpibat_getbif(sc);
acpibat_getbst(sc);
/* _BIF values are static, sensor 0..3 */
if (sc->sc_bif.bif_last_capacity == BIF_UNKNOWN) {
sc->sc_sens[0].value = 0;
sc->sc_sens[0].status = SENSOR_S_UNKNOWN;
sc->sc_sens[0].flags = SENSOR_FUNKNOWN;
} else {
sc->sc_sens[0].value = sc->sc_bif.bif_last_capacity * 1000;
sc->sc_sens[0].status = SENSOR_S_UNSPEC;
sc->sc_sens[0].flags = 0;
}
sc->sc_sens[1].value = sc->sc_bif.bif_warning * 1000;
sc->sc_sens[1].flags = 0;
sc->sc_sens[2].value = sc->sc_bif.bif_low * 1000;
sc->sc_sens[2].flags = 0;
if (sc->sc_bif.bif_voltage == BIF_UNKNOWN) {
sc->sc_sens[3].value = 0;
sc->sc_sens[3].status = SENSOR_S_UNKNOWN;
sc->sc_sens[3].flags = SENSOR_FUNKNOWN;
} else {
sc->sc_sens[3].value = sc->sc_bif.bif_voltage * 1000;
sc->sc_sens[3].status = SENSOR_S_UNSPEC;
sc->sc_sens[3].flags = 0;
}
/* _BST values are dynamic, sensor 4..7 */
sc->sc_sens[4].status = SENSOR_S_OK;
sc->sc_sens[4].flags = 0;
if (sc->sc_bif.bif_last_capacity == BIF_UNKNOWN ||
sc->sc_bst.bst_capacity == BST_UNKNOWN) {
sc->sc_sens[4].status = SENSOR_S_UNKNOWN;
sc->sc_sens[4].flags = SENSOR_FUNKNOWN;
strlcpy(sc->sc_sens[4].desc, "battery unknown",
sizeof(sc->sc_sens[4].desc));
} else if (sc->sc_bst.bst_capacity >= sc->sc_bif.bif_last_capacity)
strlcpy(sc->sc_sens[4].desc, "battery full",
sizeof(sc->sc_sens[4].desc));
else if (sc->sc_bst.bst_state & BST_DISCHARGE)
strlcpy(sc->sc_sens[4].desc, "battery discharging",
sizeof(sc->sc_sens[4].desc));
else if (sc->sc_bst.bst_state & BST_CHARGE)
strlcpy(sc->sc_sens[4].desc, "battery charging",
sizeof(sc->sc_sens[4].desc));
else if (sc->sc_bst.bst_state & BST_CRITICAL) {
strlcpy(sc->sc_sens[4].desc, "battery critical",
sizeof(sc->sc_sens[4].desc));
sc->sc_sens[4].status = SENSOR_S_CRIT;
} else
strlcpy(sc->sc_sens[4].desc, "battery idle",
sizeof(sc->sc_sens[4].desc));
sc->sc_sens[4].value = sc->sc_bst.bst_state;
if (sc->sc_bst.bst_rate == BST_UNKNOWN) {
sc->sc_sens[5].value = 0;
sc->sc_sens[5].status = SENSOR_S_UNKNOWN;
sc->sc_sens[5].flags = SENSOR_FUNKNOWN;
} else {
sc->sc_sens[5].value = sc->sc_bst.bst_rate;
sc->sc_sens[5].status = SENSOR_S_UNSPEC;
sc->sc_sens[5].flags = 0;
}
if (sc->sc_bst.bst_capacity == BST_UNKNOWN) {
sc->sc_sens[6].value = 0;
sc->sc_sens[6].status = SENSOR_S_UNKNOWN;
sc->sc_sens[6].flags = SENSOR_FUNKNOWN;
} else {
sc->sc_sens[6].value = sc->sc_bst.bst_capacity * 1000;
sc->sc_sens[6].flags = 0;
if (sc->sc_bst.bst_capacity < sc->sc_bif.bif_low)
/* XXX we should shutdown the system */
sc->sc_sens[6].status = SENSOR_S_CRIT;
else if (sc->sc_bst.bst_capacity < sc->sc_bif.bif_warning)
sc->sc_sens[6].status = SENSOR_S_WARN;
else
sc->sc_sens[6].status = SENSOR_S_OK;
}
if (sc->sc_bst.bst_voltage == BST_UNKNOWN) {
sc->sc_sens[7].value = 0;
sc->sc_sens[7].status = SENSOR_S_UNKNOWN;
sc->sc_sens[7].flags = SENSOR_FUNKNOWN;
} else {
sc->sc_sens[7].value = sc->sc_bst.bst_voltage * 1000;
sc->sc_sens[7].status = SENSOR_S_UNSPEC;
sc->sc_sens[7].flags = 0;
}
}
int
acpibat_getbif(struct acpibat_softc *sc)
{
struct aml_value res;
int rv = EINVAL;
if (!sc->sc_bat_present) {
memset(&sc->sc_bif, 0, sizeof(sc->sc_bif));
return (0);
}
if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_BIF", 0, NULL, &res)) {
dnprintf(10, "%s: no _BIF\n", DEVNAME(sc));
goto out;
}
if (res.length != 13) {
dnprintf(10, "%s: invalid _BIF, battery info not saved\n",
DEVNAME(sc));
goto out;
}
sc->sc_bif.bif_power_unit = aml_val2int(res.v_package[0]);
sc->sc_bif.bif_capacity = aml_val2int(res.v_package[1]);
sc->sc_bif.bif_last_capacity = aml_val2int(res.v_package[2]);
sc->sc_bif.bif_technology = aml_val2int(res.v_package[3]);
sc->sc_bif.bif_voltage = aml_val2int(res.v_package[4]);
sc->sc_bif.bif_warning = aml_val2int(res.v_package[5]);
sc->sc_bif.bif_low = aml_val2int(res.v_package[6]);
sc->sc_bif.bif_cap_granu1 = aml_val2int(res.v_package[7]);
sc->sc_bif.bif_cap_granu2 = aml_val2int(res.v_package[8]);
strlcpy(sc->sc_bif.bif_model, aml_val_to_string(res.v_package[9]),
sizeof(sc->sc_bif.bif_model));
strlcpy(sc->sc_bif.bif_serial, aml_val_to_string(res.v_package[10]),
sizeof(sc->sc_bif.bif_serial));
strlcpy(sc->sc_bif.bif_type, aml_val_to_string(res.v_package[11]),
sizeof(sc->sc_bif.bif_type));
strlcpy(sc->sc_bif.bif_oem, aml_val_to_string(res.v_package[12]),
sizeof(sc->sc_bif.bif_oem));
dnprintf(60, "power_unit: %u capacity: %u last_cap: %u tech: %u "
"volt: %u warn: %u low: %u gran1: %u gran2: %d model: %s "
"serial: %s type: %s oem: %s\n",
sc->sc_bif.bif_power_unit,
sc->sc_bif.bif_capacity,
sc->sc_bif.bif_last_capacity,
sc->sc_bif.bif_technology,
sc->sc_bif.bif_voltage,
sc->sc_bif.bif_warning,
sc->sc_bif.bif_low,
sc->sc_bif.bif_cap_granu1,
sc->sc_bif.bif_cap_granu2,
sc->sc_bif.bif_model,
sc->sc_bif.bif_serial,
sc->sc_bif.bif_type,
sc->sc_bif.bif_oem);
rv = 0;
out:
aml_freevalue(&res);
return (rv);
}
int
acpibat_getbst(struct acpibat_softc *sc)
{
struct aml_value res;
int rv = EINVAL;
if (!sc->sc_bat_present) {
memset(&sc->sc_bst, 0, sizeof(sc->sc_bst));
return (0);
}
if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_BST", 0, NULL, &res)) {
dnprintf(10, "%s: no _BST\n", DEVNAME(sc));
goto out;
}
if (res.length != 4) {
dnprintf(10, "%s: invalid _BST, battery status not saved\n",
DEVNAME(sc));
goto out;
}
sc->sc_bst.bst_state = aml_val2int(res.v_package[0]);
sc->sc_bst.bst_rate = aml_val2int(res.v_package[1]);
sc->sc_bst.bst_capacity = aml_val2int(res.v_package[2]);
sc->sc_bst.bst_voltage = aml_val2int(res.v_package[3]);
dnprintf(60, "state: %u rate: %u cap: %u volt: %u ",
sc->sc_bst.bst_state,
sc->sc_bst.bst_rate,
sc->sc_bst.bst_capacity,
sc->sc_bst.bst_voltage);
rv = 0;
out:
aml_freevalue(&res);
return (rv);
}
/* XXX it has been observed that some systems do not propagate battery
* insertion events up to the driver. What seems to happen is that DSDT
* does receive an interrupt however the originator bit is not set.
* This seems to happen when one inserts a 100% full battery. Removal
* of the power cord or insertion of a not 100% full battery breaks this
* behavior and all events will then be sent upwards. Currently there
* is no known work-around for it.
*/
int
acpibat_notify(struct aml_node *node, int notify_type, void *arg)
{
struct acpibat_softc *sc = arg;
int64_t sta;
int present;
dnprintf(10, "acpibat_notify: %.2x %s\n", notify_type,
sc->sc_devnode->name);
/* Check if installed state of battery has changed */
if (aml_evalinteger(sc->sc_acpi, node, "_STA", 0, NULL, &sta) == 0) {
present = sta & STA_BATTERY;
if (!sc->sc_bat_present && present)
sc->sc_bat_present = 1;
else if (sc->sc_bat_present && !present)
sc->sc_bat_present = 0;
}
switch (notify_type) {
case 0x80: /* _BST changed */
break;
case 0x81: /* _BIF changed */
break;
default:
break;
}
acpibat_refresh(sc);
return (0);
}
|
