static int
acpi_cmbat_ioctl(u_long cmd, caddr_t addr, void *arg)
{
device_t dev;
union acpi_battery_ioctl_arg *ioctl_arg;
struct acpi_cmbat_softc *sc;
struct acpi_bif *bifp;
struct acpi_bst *bstp;
ioctl_arg = (union acpi_battery_ioctl_arg *)addr;
if ((dev = devclass_get_device(acpi_cmbat_devclass,
ioctl_arg->unit)) == NULL) {
return (ENXIO);
}
if ((sc = device_get_softc(dev)) == NULL) {
return (ENXIO);
}
/*
* No security check required: information retrieval only. If
* new functions are added here, a check might be required.
*/
switch (cmd) {
case ACPIIO_CMBAT_GET_BIF:
acpi_cmbat_get_bif(dev);
bifp = &ioctl_arg->bif;
bifp->unit = sc->bif.unit;
bifp->dcap = sc->bif.dcap;
bifp->lfcap = sc->bif.lfcap;
bifp->btech = sc->bif.btech;
bifp->dvol = sc->bif.dvol;
bifp->wcap = sc->bif.wcap;
bifp->lcap = sc->bif.lcap;
bifp->gra1 = sc->bif.gra1;
bifp->gra2 = sc->bif.gra2;
strncpy(bifp->model, sc->bif.model, sizeof(sc->bif.model));
strncpy(bifp->serial, sc->bif.serial, sizeof(sc->bif.serial));
strncpy(bifp->type, sc->bif.type, sizeof(sc->bif.type));
strncpy(bifp->oeminfo, sc->bif.oeminfo, sizeof(sc->bif.oeminfo));
break;
case ACPIIO_CMBAT_GET_BST:
bstp = &ioctl_arg->bst;
if (acpi_BatteryIsPresent(dev)) {
acpi_cmbat_get_bst(dev);
bstp->state = sc->bst.state;
bstp->rate = sc->bst.rate;
bstp->cap = sc->bst.cap;
bstp->volt = sc->bst.volt;
} else
bstp->state = ACPI_BATT_STAT_NOT_PRESENT;
break;
}
return (0);
}
static void
acpi_cmbat_init_battery(void *arg)
{
struct acpi_cmbat_softc *sc;
int retry, valid;
device_t dev;
dev = (device_t)arg;
sc = device_get_softc(dev);
ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
"battery initialization start\n");
/*
* Try repeatedly to get valid data from the battery. Since the
* embedded controller isn't always ready just after boot, we may have
* to wait a while.
*/
for (retry = 0; retry < ACPI_CMBAT_RETRY_MAX; retry++, AcpiOsSleep(10000)) {
/* batteries on DOCK can be ejected w/ DOCK during retrying */
if (!device_is_attached(dev))
return;
if (!acpi_BatteryIsPresent(dev))
continue;
/*
* Only query the battery if this is the first try or the specific
* type of info is still invalid.
*/
ACPI_SERIAL_BEGIN(cmbat);
if (retry == 0 || !acpi_battery_bst_valid(&sc->bst)) {
timespecclear(&sc->bst_lastupdated);
acpi_cmbat_get_bst(dev);
}
if (retry == 0 || !acpi_battery_bif_valid(&sc->bif))
acpi_cmbat_get_bif(dev);
valid = acpi_battery_bst_valid(&sc->bst) &&
acpi_battery_bif_valid(&sc->bif);
ACPI_SERIAL_END(cmbat);
if (valid)
break;
}
if (retry == ACPI_CMBAT_RETRY_MAX) {
ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
"battery initialization failed, giving up\n");
} else {
ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
"battery initialization done, tried %d times\n", retry + 1);
}
}
static void
acpi_cmbat_init_battery(void *arg)
{
int retry;
device_t dev = (device_t)arg;
struct acpi_cmbat_softc *sc = device_get_softc(dev);
#define ACPI_CMBAT_RETRY_MAX 6
if (sc->initializing) {
return;
}
sc->initializing = 1;
ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
"battery initialization start\n");
for (retry = 0; retry < ACPI_CMBAT_RETRY_MAX; retry++, AcpiOsSleep(10, 0)) {
sc->present = acpi_BatteryIsPresent(dev);
if (!sc->present) {
continue;
}
timespecclear(&sc->bst_lastupdated);
timespecclear(&sc->bif_lastupdated);
acpi_cmbat_get_bst(dev);
if (!acpi_cmbat_is_bst_valid(&sc->bst)) {
continue;
}
acpi_cmbat_get_bif(dev);
if (!acpi_cmbat_is_bif_valid(&sc->bif)) {
continue;
}
break;
}
if (retry == ACPI_CMBAT_RETRY_MAX)
ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
"battery initialization failed, giving up\n");
else
ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
"battery initialization done, tried %d times\n",
retry+1);
sc->initializing = 0;
}
static int
acpi_cmbat_bst(device_t dev, struct acpi_bst *bstp)
{
struct acpi_cmbat_softc *sc;
sc = device_get_softc(dev);
ACPI_SERIAL_BEGIN(cmbat);
if (acpi_BatteryIsPresent(dev)) {
acpi_cmbat_get_bst(dev);
bstp->state = sc->bst.state;
bstp->rate = sc->bst.rate;
bstp->cap = sc->bst.cap;
bstp->volt = sc->bst.volt;
} else
bstp->state = ACPI_BATT_STAT_NOT_PRESENT;
ACPI_SERIAL_END(cmbat);
return (0);
}
static int
acpi_cmbat_get_total_battinfo(struct acpi_battinfo *battinfo)
{
int i;
int error;
int batt_stat;
int valid_rate, valid_units;
int cap, min;
int total_cap, total_min, total_full;
device_t dev;
struct acpi_cmbat_softc *sc;
static int bat_units = 0;
static struct acpi_cmbat_softc **bat = NULL;
cap = min = -1;
batt_stat = ACPI_BATT_STAT_NOT_PRESENT;
error = 0;
/* Allocate array of softc pointers */
if (bat_units != acpi_cmbat_units) {
if (bat != NULL) {
free(bat, M_ACPICMBAT);
bat = NULL;
}
bat_units = 0;
}
if (bat == NULL) {
bat_units = acpi_cmbat_units;
bat = malloc(sizeof(struct acpi_cmbat_softc *) * bat_units,
M_ACPICMBAT, M_NOWAIT);
if (bat == NULL) {
error = ENOMEM;
goto out;
}
/* Collect softc pointers */
for (i = 0; i < acpi_cmbat_units; i++) {
if ((dev = devclass_get_device(acpi_cmbat_devclass, i)) == NULL) {
error = ENXIO;
goto out;
}
if ((sc = device_get_softc(dev)) == NULL) {
error = ENXIO;
goto out;
}
bat[i] = sc;
}
}
/* Get battery status, valid rate and valid units */
batt_stat = valid_rate = valid_units = 0;
for (i = 0; i < acpi_cmbat_units; i++) {
bat[i]->present = acpi_BatteryIsPresent(bat[i]->dev);
if (!bat[i]->present)
continue;
acpi_cmbat_get_bst(bat[i]->dev);
/* If battey not installed, we get strange values */
if (!acpi_cmbat_is_bst_valid(&(bat[i]->bst)) ||
!acpi_cmbat_is_bif_valid(&(bat[i]->bif))) {
bat[i]->present = 0;
continue;
}
valid_units++;
bat[i]->cap = 100 * bat[i]->bst.cap / bat[i]->bif.lfcap;
batt_stat |= bat[i]->bst.state;
if (bat[i]->bst.rate > 0) {
/*
* XXX Hack to calculate total battery time.
* Systems with 2 or more battries, they may get used
* one by one, thus bst.rate is set only to the one
* in use. For remaining batteries bst.rate = 0, which
* makes it impossible to calculate remaining time.
* Some other systems may need sum of bst.rate in
* dis-charging state.
* There for we sum up the bst.rate that is valid
* (in dis-charging state), and use the sum to
* calcutate remaining batteries' time.
*/
if (bat[i]->bst.state & ACPI_BATT_STAT_DISCHARG) {
valid_rate += bat[i]->bst.rate;
}
}
}
/* Calculate total battery capacity and time */
total_cap = total_min = total_full = 0;
for (i = 0; i < acpi_cmbat_units; i++) {
if (!bat[i]->present) {
continue;
}
if (valid_rate > 0) {
/* Use the sum of bst.rate */
bat[i]->min = 60 * bat[i]->bst.cap / valid_rate;
} else if (bat[i]->full_charge_time > 0) {
bat[i]->min = (bat[i]->full_charge_time * bat[i]->cap) / 100;
} else {
/* Couldn't find valid rate and full battery time */
bat[i]->min = 0;
}
total_min += bat[i]->min;
total_cap += bat[i]->cap;
total_full += bat[i]->full_charge_time;
}
/* Battery life */
if (valid_units == 0) {
cap = -1;
batt_stat = ACPI_BATT_STAT_NOT_PRESENT;
} else {
cap = total_cap / valid_units;
}
/* Battery time */
if (valid_units == 0) {
min = -1;
} else if (valid_rate == 0 || (batt_stat & ACPI_BATT_STAT_CHARGING)) {
if (total_full == 0) {
min = -1;
} else {
min = (total_full * cap) / 100;
}
} else {
min = total_min;
}
acpi_cmbat_info_updated(&acpi_cmbat_info_lastupdated);
out:
battinfo->cap = cap;
battinfo->min = min;
battinfo->state = batt_stat;
return (error);
}
