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-rw-r--r--sys/dev/acpica/acpi_cmbat.c661
1 files changed, 661 insertions, 0 deletions
diff --git a/sys/dev/acpica/acpi_cmbat.c b/sys/dev/acpica/acpi_cmbat.c
new file mode 100644
index 0000000..8bcf286
--- /dev/null
+++ b/sys/dev/acpica/acpi_cmbat.c
@@ -0,0 +1,661 @@
+/*-
+ * Copyright (c) 2000 Munehiro Matsuda
+ * Copyright (c) 2000 Takanori Watanabe
+ * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@FreeBSD.org>
+ * All rights reserved.
+ *
+ * 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 AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#include "opt_acpi.h"
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/bus.h>
+#include <sys/ioccom.h>
+
+#include <machine/bus.h>
+#include <sys/rman.h>
+#include <sys/malloc.h>
+
+#include "acpi.h"
+#include <dev/acpica/acpivar.h>
+#include <dev/acpica/acpiio.h>
+
+MALLOC_DEFINE(M_ACPICMBAT, "acpicmbat", "ACPI control method battery data");
+
+/* Number of times to retry initialization before giving up. */
+#define ACPI_CMBAT_RETRY_MAX 6
+
+/* Check the battery once a minute. */
+#define CMBAT_POLLRATE (60 * hz)
+
+/* Hooks for the ACPI CA debugging infrastructure */
+#define _COMPONENT ACPI_BATTERY
+ACPI_MODULE_NAME("BATTERY")
+
+#define ACPI_BATTERY_BST_CHANGE 0x80
+#define ACPI_BATTERY_BIF_CHANGE 0x81
+
+struct acpi_cmbat_softc {
+ device_t dev;
+
+ struct acpi_bif bif;
+ struct acpi_bst bst;
+ struct timespec bif_lastupdated;
+ struct timespec bst_lastupdated;
+ int bif_updating;
+ int bst_updating;
+
+ int present;
+ int cap;
+ int min;
+ int full_charge_time;
+ int initializing;
+};
+
+static struct timespec acpi_cmbat_info_lastupdated;
+
+/* XXX: devclass_get_maxunit() don't give us the current allocated units. */
+static int acpi_cmbat_units = 0;
+
+static int acpi_cmbat_info_expired(struct timespec *);
+static void acpi_cmbat_info_updated(struct timespec *);
+static void acpi_cmbat_get_bst(void *);
+static void acpi_cmbat_get_bif(void *);
+static void acpi_cmbat_notify_handler(ACPI_HANDLE, UINT32, void *);
+static int acpi_cmbat_probe(device_t);
+static int acpi_cmbat_attach(device_t);
+static int acpi_cmbat_resume(device_t);
+static int acpi_cmbat_ioctl(u_long, caddr_t, void *);
+static int acpi_cmbat_is_bst_valid(struct acpi_bst*);
+static int acpi_cmbat_is_bif_valid(struct acpi_bif*);
+static int acpi_cmbat_get_total_battinfo(struct acpi_battinfo *);
+static void acpi_cmbat_init_battery(void *);
+
+static device_method_t acpi_cmbat_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, acpi_cmbat_probe),
+ DEVMETHOD(device_attach, acpi_cmbat_attach),
+ DEVMETHOD(device_resume, acpi_cmbat_resume),
+
+ {0, 0}
+};
+
+static driver_t acpi_cmbat_driver = {
+ "acpi_cmbat",
+ acpi_cmbat_methods,
+ sizeof(struct acpi_cmbat_softc),
+};
+
+static devclass_t acpi_cmbat_devclass;
+DRIVER_MODULE(acpi_cmbat, acpi, acpi_cmbat_driver, acpi_cmbat_devclass, 0, 0);
+
+static int
+acpi_cmbat_info_expired(struct timespec *lastupdated)
+{
+ struct timespec curtime;
+
+ if (lastupdated == NULL)
+ return (1);
+ if (!timespecisset(lastupdated))
+ return (1);
+
+ getnanotime(&curtime);
+ timespecsub(&curtime, lastupdated);
+ return (curtime.tv_sec < 0 ||
+ curtime.tv_sec > acpi_battery_get_info_expire());
+}
+
+
+static void
+acpi_cmbat_info_updated(struct timespec *lastupdated)
+{
+ if (lastupdated != NULL)
+ getnanotime(lastupdated);
+}
+
+static void
+acpi_cmbat_get_bst(void *context)
+{
+ device_t dev;
+ struct acpi_cmbat_softc *sc;
+ ACPI_STATUS as;
+ ACPI_OBJECT *res;
+ ACPI_HANDLE h;
+ ACPI_BUFFER bst_buffer;
+
+ dev = context;
+ sc = device_get_softc(dev);
+ h = acpi_get_handle(dev);
+
+ if (!acpi_cmbat_info_expired(&sc->bst_lastupdated))
+ return;
+ if (sc->bst_updating)
+ return;
+ sc->bst_updating = 1;
+
+ bst_buffer.Pointer = NULL;
+ bst_buffer.Length = ACPI_ALLOCATE_BUFFER;
+ as = AcpiEvaluateObject(h, "_BST", NULL, &bst_buffer);
+ if (ACPI_FAILURE(as)) {
+ ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
+ "error fetching current battery status -- %s\n",
+ AcpiFormatException(as));
+ goto end;
+ }
+
+ res = (ACPI_OBJECT *)bst_buffer.Pointer;
+ if (!ACPI_PKG_VALID(res, 4)) {
+ ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
+ "battery status corrupted\n");
+ goto end;
+ }
+
+ if (acpi_PkgInt32(res, 0, &sc->bst.state) != 0)
+ goto end;
+ if (acpi_PkgInt32(res, 1, &sc->bst.rate) != 0)
+ goto end;
+ if (acpi_PkgInt32(res, 2, &sc->bst.cap) != 0)
+ goto end;
+ if (acpi_PkgInt32(res, 3, &sc->bst.volt) != 0)
+ goto end;
+ acpi_cmbat_info_updated(&sc->bst_lastupdated);
+
+end:
+ if (bst_buffer.Pointer != NULL)
+ AcpiOsFree(bst_buffer.Pointer);
+ sc->bst_updating = 0;
+}
+
+static void
+acpi_cmbat_get_bif(void *context)
+{
+ device_t dev;
+ struct acpi_cmbat_softc *sc;
+ ACPI_STATUS as;
+ ACPI_OBJECT *res;
+ ACPI_HANDLE h;
+ ACPI_BUFFER bif_buffer;
+
+ dev = context;
+ sc = device_get_softc(dev);
+ h = acpi_get_handle(dev);
+
+ if (!acpi_cmbat_info_expired(&sc->bif_lastupdated))
+ return;
+ if (sc->bif_updating)
+ return;
+ sc->bif_updating = 1;
+
+ bif_buffer.Pointer = NULL;
+ bif_buffer.Length = ACPI_ALLOCATE_BUFFER;
+ as = AcpiEvaluateObject(h, "_BIF", NULL, &bif_buffer);
+ if (ACPI_FAILURE(as)) {
+ ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
+ "error fetching current battery info -- %s\n",
+ AcpiFormatException(as));
+ goto end;
+ }
+
+ res = (ACPI_OBJECT *)bif_buffer.Pointer;
+ if (!ACPI_PKG_VALID(res, 13)) {
+ ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
+ "battery info corrupted\n");
+ goto end;
+ }
+
+ if (acpi_PkgInt32(res, 0, &sc->bif.units) != 0)
+ goto end;
+ if (acpi_PkgInt32(res, 1, &sc->bif.dcap) != 0)
+ goto end;
+ if (acpi_PkgInt32(res, 2, &sc->bif.lfcap) != 0)
+ goto end;
+ if (acpi_PkgInt32(res, 3, &sc->bif.btech) != 0)
+ goto end;
+ if (acpi_PkgInt32(res, 4, &sc->bif.dvol) != 0)
+ goto end;
+ if (acpi_PkgInt32(res, 5, &sc->bif.wcap) != 0)
+ goto end;
+ if (acpi_PkgInt32(res, 6, &sc->bif.lcap) != 0)
+ goto end;
+ if (acpi_PkgInt32(res, 7, &sc->bif.gra1) != 0)
+ goto end;
+ if (acpi_PkgInt32(res, 8, &sc->bif.gra2) != 0)
+ goto end;
+ if (acpi_PkgStr(res, 9, sc->bif.model, ACPI_CMBAT_MAXSTRLEN) != 0)
+ goto end;
+ if (acpi_PkgStr(res, 10, sc->bif.serial, ACPI_CMBAT_MAXSTRLEN) != 0)
+ goto end;
+ if (acpi_PkgStr(res, 11, sc->bif.type, ACPI_CMBAT_MAXSTRLEN) != 0)
+ goto end;
+ if (acpi_PkgStr(res, 12, sc->bif.oeminfo, ACPI_CMBAT_MAXSTRLEN) != 0)
+ goto end;
+ acpi_cmbat_info_updated(&sc->bif_lastupdated);
+
+end:
+ if (bif_buffer.Pointer != NULL)
+ AcpiOsFree(bif_buffer.Pointer);
+ sc->bif_updating = 0;
+}
+
+static void
+acpi_cmbat_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
+{
+ device_t dev;
+ struct acpi_cmbat_softc *sc;
+
+ dev = (device_t)context;
+ if ((sc = device_get_softc(dev)) == NULL)
+ return;
+
+ acpi_UserNotify("CMBAT", h, notify);
+
+ switch (notify) {
+ case ACPI_NOTIFY_DEVICE_CHECK:
+ case ACPI_BATTERY_BST_CHANGE:
+ timespecclear(&sc->bst_lastupdated);
+ break;
+ case ACPI_NOTIFY_BUS_CHECK:
+ case ACPI_BATTERY_BIF_CHANGE:
+ timespecclear(&sc->bif_lastupdated);
+ AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_get_bif, dev);
+ break;
+ default:
+ break;
+ }
+}
+
+static int
+acpi_cmbat_probe(device_t dev)
+{
+ if (acpi_get_type(dev) == ACPI_TYPE_DEVICE &&
+ !acpi_disabled("cmbat") && acpi_MatchHid(dev, "PNP0C0A")) {
+
+ device_set_desc(dev, "Control Method Battery");
+ return (0);
+ }
+ return (ENXIO);
+}
+
+static int
+acpi_cmbat_attach(device_t dev)
+{
+ int error;
+ ACPI_HANDLE handle;
+ struct acpi_cmbat_softc *sc;
+
+ if ((sc = device_get_softc(dev)) == NULL)
+ return (ENXIO);
+
+ handle = acpi_get_handle(dev);
+
+ /*
+ * Install a system notify handler in addition to the device notify.
+ * Toshiba notebook uses this alternate notify for its battery.
+ */
+ AcpiInstallNotifyHandler(handle, ACPI_SYSTEM_NOTIFY,
+ acpi_cmbat_notify_handler, dev);
+ AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY,
+ acpi_cmbat_notify_handler, dev);
+
+ sc->bif_updating = sc->bst_updating = 0;
+ sc->dev = dev;
+
+ timespecclear(&sc->bif_lastupdated);
+ timespecclear(&sc->bst_lastupdated);
+
+ if (acpi_cmbat_units == 0) {
+ error = acpi_register_ioctl(ACPIIO_CMBAT_GET_BIF,
+ acpi_cmbat_ioctl, NULL);
+ if (error != 0)
+ return (error);
+ error = acpi_register_ioctl(ACPIIO_CMBAT_GET_BST,
+ acpi_cmbat_ioctl, NULL);
+ if (error != 0)
+ return (error);
+ }
+
+ error = acpi_battery_register(ACPI_BATT_TYPE_CMBAT, acpi_cmbat_units);
+ if (error != 0)
+ return (error);
+
+ acpi_cmbat_units++;
+ timespecclear(&acpi_cmbat_info_lastupdated);
+ sc->initializing = 0;
+ AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_init_battery, dev);
+
+ return (0);
+}
+
+static int
+acpi_cmbat_resume(device_t dev)
+{
+ AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_cmbat_init_battery, dev);
+ return (0);
+}
+
+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;
+ dev = devclass_get_device(acpi_cmbat_devclass, ioctl_arg->unit);
+ if (dev == NULL)
+ return (ENXIO);
+ sc = device_get_softc(dev);
+ if (sc == 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->units = sc->bif.units;
+ 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;
+ default:
+ break;
+ }
+
+ return (0);
+}
+
+static int
+acpi_cmbat_is_bst_valid(struct acpi_bst *bst)
+{
+ if (bst->state >= ACPI_BATT_STAT_MAX || bst->cap == 0xffffffff ||
+ bst->volt == 0xffffffff)
+
+ return (0);
+ else
+ return (1);
+}
+
+static int
+acpi_cmbat_is_bif_valid(struct acpi_bif *bif)
+{
+ if (bif->lfcap == 0)
+ return (0);
+ else
+ return (1);
+}
+
+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 battery 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);
+}
+
+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);
+
+ 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;
+ }
+
+ sc->initializing = 0;
+ 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);
+ }
+}
+
+/*
+ * Public interfaces.
+ */
+int
+acpi_cmbat_get_battinfo(int unit, struct acpi_battinfo *battinfo)
+{
+ int error;
+ device_t dev;
+ struct acpi_cmbat_softc *sc;
+
+ if (unit == -1)
+ return (acpi_cmbat_get_total_battinfo(battinfo));
+
+ if (acpi_cmbat_info_expired(&acpi_cmbat_info_lastupdated)) {
+ error = acpi_cmbat_get_total_battinfo(battinfo);
+ if (error)
+ goto out;
+ }
+
+ error = 0;
+ if (unit >= acpi_cmbat_units) {
+ error = ENXIO;
+ goto out;
+ }
+
+ if ((dev = devclass_get_device(acpi_cmbat_devclass, unit)) == NULL) {
+ error = ENXIO;
+ goto out;
+ }
+ if ((sc = device_get_softc(dev)) == NULL) {
+ error = ENXIO;
+ goto out;
+ }
+
+ if (!sc->present) {
+ battinfo->cap = -1;
+ battinfo->min = -1;
+ battinfo->state = ACPI_BATT_STAT_NOT_PRESENT;
+ } else {
+ battinfo->cap = sc->cap;
+ battinfo->min = sc->min;
+ battinfo->state = sc->bst.state;
+ }
+
+out:
+ return (error);
+}
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