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-rw-r--r--sys/dev/acpica/acpi_battery.c260
1 files changed, 260 insertions, 0 deletions
diff --git a/sys/dev/acpica/acpi_battery.c b/sys/dev/acpica/acpi_battery.c
new file mode 100644
index 0000000..329d64a
--- /dev/null
+++ b/sys/dev/acpica/acpi_battery.c
@@ -0,0 +1,260 @@
+/*-
+ * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.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" /* XXX trim includes */
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/proc.h>
+#include <sys/malloc.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/ioccom.h>
+#include <sys/reboot.h>
+#include <sys/sysctl.h>
+#include <sys/ctype.h>
+
+#include <machine/clock.h>
+
+#include <machine/resource.h>
+
+#include "acpi.h"
+
+#include <dev/acpica/acpivar.h>
+#include <dev/acpica/acpiio.h>
+
+MALLOC_DEFINE(M_ACPIBATT, "acpibatt", "ACPI generic battery data");
+
+/*
+ * ACPI Battery Abstruction Layer.
+ */
+
+struct acpi_batteries {
+ TAILQ_ENTRY(acpi_batteries) link;
+ struct acpi_battdesc battdesc;
+};
+
+static TAILQ_HEAD(,acpi_batteries) acpi_batteries;
+static int acpi_batteries_initted = 0;
+static int acpi_batteries_units = 0;
+static int acpi_battery_info_expire = 5;
+static struct acpi_battinfo acpi_battery_battinfo;
+
+int
+acpi_battery_get_units(void)
+{
+
+ return (acpi_batteries_units);
+}
+
+int
+acpi_battery_get_battdesc(int logical_unit, struct acpi_battdesc *battdesc)
+{
+ int i;
+ struct acpi_batteries *bp;
+
+ if (logical_unit < 0 || logical_unit >= acpi_batteries_units) {
+ return (ENXIO);
+ }
+
+ i = 0;
+ TAILQ_FOREACH(bp, &acpi_batteries, link) {
+ if (logical_unit == i) {
+ battdesc->type = bp->battdesc.type;
+ battdesc->phys_unit = bp->battdesc.phys_unit;
+ return (0);
+ }
+ i++;
+ }
+
+ return (ENXIO);
+}
+
+int
+acpi_battery_get_battinfo(int unit, struct acpi_battinfo *battinfo)
+{
+ int error;
+ struct acpi_battdesc battdesc;
+
+ error = 0;
+ if (unit == -1) {
+ error = acpi_cmbat_get_battinfo(-1, battinfo);
+ goto out;
+ } else {
+ if ((error = acpi_battery_get_battdesc(unit, &battdesc)) != 0) {
+ goto out;
+ }
+ switch (battdesc.type) {
+ case ACPI_BATT_TYPE_CMBAT:
+ error = acpi_cmbat_get_battinfo(battdesc.phys_unit,
+ battinfo);
+ break;
+ default:
+ error = ENXIO;
+ break;
+ }
+ }
+out:
+ return (error);
+}
+
+int
+acpi_battery_get_info_expire(void)
+{
+
+ return (acpi_battery_info_expire);
+}
+
+static int
+acpi_battery_ioctl(u_long cmd, caddr_t addr, void *arg)
+{
+ int error;
+ int logical_unit;
+ union acpi_battery_ioctl_arg *ioctl_arg;
+
+ ioctl_arg = (union acpi_battery_ioctl_arg *)addr;
+ error = 0;
+ switch (cmd) {
+ case ACPIIO_BATT_GET_UNITS:
+ *(int *)addr = acpi_battery_get_units();
+ break;
+
+ case ACPIIO_BATT_GET_BATTDESC:
+ logical_unit = ioctl_arg->unit;
+ error = acpi_battery_get_battdesc(logical_unit, &ioctl_arg->battdesc);
+ break;
+
+ case ACPIIO_BATT_GET_BATTINFO:
+ logical_unit = ioctl_arg->unit;
+ error = acpi_battery_get_battinfo(logical_unit,
+ &ioctl_arg->battinfo);
+ break;
+
+ default:
+ error = EINVAL;
+ break;
+ }
+
+ return (error);
+}
+
+static int
+acpi_battery_sysctl(SYSCTL_HANDLER_ARGS)
+{
+ int val;
+ int error;
+
+ acpi_battery_get_battinfo(-1, &acpi_battery_battinfo);
+ val = *(u_int *)oidp->oid_arg1;
+ error = sysctl_handle_int(oidp, &val, 0, req);
+ return (error);
+}
+
+static int
+acpi_battery_init(void)
+{
+ device_t dev;
+ struct acpi_softc *sc;
+ int error;
+
+ if ((dev = devclass_get_device(devclass_find("acpi"), 0)) == NULL) {
+ return (ENXIO);
+ }
+ if ((sc = device_get_softc(dev)) == NULL) {
+ return (ENXIO);
+ }
+
+ error = 0;
+
+ TAILQ_INIT(&acpi_batteries);
+ acpi_batteries_initted = 1;
+
+ if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_UNITS,
+ acpi_battery_ioctl, NULL)) != 0) {
+ return (error);
+ }
+ if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTDESC,
+ acpi_battery_ioctl, NULL)) != 0) {
+ return (error);
+ }
+ if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTINFO,
+ acpi_battery_ioctl, NULL)) != 0) {
+ return (error);
+ }
+
+ sysctl_ctx_init(&sc->acpi_battery_sysctl_ctx);
+ sc->acpi_battery_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_battery_sysctl_ctx,
+ SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
+ OID_AUTO, "battery", CTLFLAG_RD, 0, "");
+ SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx,
+ SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
+ OID_AUTO, "life", CTLTYPE_INT | CTLFLAG_RD,
+ &acpi_battery_battinfo.cap, 0, acpi_battery_sysctl, "I", "");
+ SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx,
+ SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
+ OID_AUTO, "time", CTLTYPE_INT | CTLFLAG_RD,
+ &acpi_battery_battinfo.min, 0, acpi_battery_sysctl, "I", "");
+ SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx,
+ SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
+ OID_AUTO, "state", CTLTYPE_INT | CTLFLAG_RD,
+ &acpi_battery_battinfo.state, 0, acpi_battery_sysctl, "I", "");
+ SYSCTL_ADD_INT(&sc->acpi_battery_sysctl_ctx,
+ SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
+ OID_AUTO, "units", CTLFLAG_RD, &acpi_batteries_units, 0, "");
+ SYSCTL_ADD_INT(&sc->acpi_battery_sysctl_ctx,
+ SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
+ OID_AUTO, "info_expire", CTLFLAG_RD | CTLFLAG_RW,
+ &acpi_battery_info_expire, 0, "");
+
+ return (error);
+}
+
+int
+acpi_battery_register(int type, int phys_unit)
+{
+ int error;
+ struct acpi_batteries *bp;
+
+ error = 0;
+ if ((bp = malloc(sizeof(*bp), M_ACPIBATT, M_NOWAIT)) == NULL) {
+ return(ENOMEM);
+ }
+
+ bp->battdesc.type = type;
+ bp->battdesc.phys_unit = phys_unit;
+ if (acpi_batteries_initted == 0) {
+ if ((error = acpi_battery_init()) != 0) {
+ free(bp, M_ACPIBATT);
+ return(error);
+ }
+ }
+
+ TAILQ_INSERT_TAIL(&acpi_batteries, bp, link);
+ acpi_batteries_units++;
+
+ return(0);
+}
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