f86214b6b8
This emulates APM device node interface APIs (mainly ioctl) and provides APM services for the applications. The goal is to support most of APM applications without any changes. Implemented ioctls in this commit are: - APMIO_SUSPEND (mapped ACPI S3 as default but changable by sysctl) - APMIO_STANDBY (mapped ACPI S1 as default but changable by sysctl) - APMIO_GETINFO and APMIO_GETINFO_OLD - APMIO_GETPWSTATUS With above, many APM applications which get batteries, ac-line info. and transition the system into suspend/standby mode (such as wmapm, xbatt) should work with ACPI enabled kernel (if ACPI works well :-) Reviewed by: arch@, audit@ and some guys
251 lines
6.2 KiB
C
251 lines
6.2 KiB
C
/*-
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* Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include "opt_acpi.h" /* XXX trim includes */
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/ioccom.h>
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#include <sys/reboot.h>
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#include <sys/sysctl.h>
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#include <sys/ctype.h>
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#include <machine/clock.h>
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#include <machine/resource.h>
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#include "acpi.h"
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#include <dev/acpica/acpivar.h>
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#include <dev/acpica/acpiio.h>
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MALLOC_DEFINE(M_ACPIBATT, "acpibatt", "ACPI generic battery data");
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/*
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* ACPI Battery Abstruction Layer.
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*/
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struct acpi_batteries {
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TAILQ_ENTRY(acpi_batteries) link;
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struct acpi_battdesc battdesc;
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};
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static TAILQ_HEAD(,acpi_batteries) acpi_batteries;
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static int acpi_batteries_initted = 0;
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static int acpi_batteries_units = 0;
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static struct acpi_battinfo acpi_battery_battinfo;
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int
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acpi_battery_get_units(void)
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{
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return (acpi_batteries_units);
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}
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int
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acpi_battery_get_battdesc(int logical_unit, struct acpi_battdesc *battdesc)
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{
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int i;
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struct acpi_batteries *bp;
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if (logical_unit < 0 || logical_unit >= acpi_batteries_units) {
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return (ENXIO);
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}
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i = 0;
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TAILQ_FOREACH(bp, &acpi_batteries, link) {
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if (logical_unit == i) {
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battdesc->type = bp->battdesc.type;
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battdesc->phys_unit = bp->battdesc.phys_unit;
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return (0);
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}
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i++;
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}
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return (ENXIO);
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}
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int
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acpi_battery_get_battinfo(int unit, struct acpi_battinfo *battinfo)
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{
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int error;
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struct acpi_battdesc battdesc;
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error = 0;
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if (unit == -1) {
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error = acpi_cmbat_get_battinfo(-1, battinfo);
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goto out;
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} else {
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if ((error = acpi_battery_get_battdesc(unit, &battdesc)) != 0) {
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goto out;
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}
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switch (battdesc.type) {
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case ACPI_BATT_TYPE_CMBAT:
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error = acpi_cmbat_get_battinfo(battdesc.phys_unit,
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battinfo);
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break;
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default:
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error = ENXIO;
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break;
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}
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}
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out:
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return (error);
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}
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static int
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acpi_battery_ioctl(u_long cmd, caddr_t addr, void *arg)
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{
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int error;
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int logical_unit;
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union acpi_battery_ioctl_arg *ioctl_arg;
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ioctl_arg = (union acpi_battery_ioctl_arg *)addr;
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error = 0;
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switch (cmd) {
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case ACPIIO_BATT_GET_UNITS:
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*(int *)addr = acpi_battery_get_units();
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break;
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case ACPIIO_BATT_GET_BATTDESC:
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logical_unit = ioctl_arg->unit;
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error = acpi_battery_get_battdesc(logical_unit, &ioctl_arg->battdesc);
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break;
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case ACPIIO_BATT_GET_BATTINFO:
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logical_unit = ioctl_arg->unit;
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error = acpi_battery_get_battinfo(logical_unit,
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&ioctl_arg->battinfo);
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break;
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default:
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error = EINVAL;
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break;
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}
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return (error);
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}
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static int
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acpi_battery_sysctl(SYSCTL_HANDLER_ARGS)
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{
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int val;
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int error;
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acpi_battery_get_battinfo(-1, &acpi_battery_battinfo);
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val = *(u_int *)oidp->oid_arg1;
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error = sysctl_handle_int(oidp, &val, 0, req);
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return (error);
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}
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static int
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acpi_battery_init(void)
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{
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device_t dev;
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struct acpi_softc *sc;
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int error;
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if ((dev = devclass_get_device(acpi_devclass, 0)) == NULL) {
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return (ENXIO);
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}
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if ((sc = device_get_softc(dev)) == NULL) {
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return (ENXIO);
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}
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error = 0;
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TAILQ_INIT(&acpi_batteries);
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acpi_batteries_initted = 1;
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if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_UNITS,
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acpi_battery_ioctl, NULL)) != 0) {
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return (error);
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}
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if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTDESC,
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acpi_battery_ioctl, NULL)) != 0) {
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return (error);
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}
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if ((error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTINFO,
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acpi_battery_ioctl, NULL)) != 0) {
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return (error);
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}
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sysctl_ctx_init(&sc->acpi_battery_sysctl_ctx);
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sc->acpi_battery_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_battery_sysctl_ctx,
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SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
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OID_AUTO, "battery", CTLFLAG_RD, 0, "");
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SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx,
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SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
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OID_AUTO, "life", CTLTYPE_INT | CTLFLAG_RD,
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&acpi_battery_battinfo.cap, 0, acpi_battery_sysctl, "I", "");
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SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx,
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SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
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OID_AUTO, "time", CTLTYPE_INT | CTLFLAG_RD,
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&acpi_battery_battinfo.min, 0, acpi_battery_sysctl, "I", "");
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SYSCTL_ADD_PROC(&sc->acpi_battery_sysctl_ctx,
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SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
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OID_AUTO, "state", CTLTYPE_INT | CTLFLAG_RD,
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&acpi_battery_battinfo.state, 0, acpi_battery_sysctl, "I", "");
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SYSCTL_ADD_INT(&sc->acpi_battery_sysctl_ctx,
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SYSCTL_CHILDREN(sc->acpi_battery_sysctl_tree),
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OID_AUTO, "units", CTLFLAG_RD, &acpi_batteries_units, 0, "");
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return (error);
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}
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int
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acpi_battery_register(int type, int phys_unit)
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{
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int error;
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struct acpi_batteries *bp;
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error = 0;
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if ((bp = malloc(sizeof(*bp), M_ACPIBATT, M_NOWAIT)) == NULL) {
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return(ENOMEM);
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}
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bp->battdesc.type = type;
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bp->battdesc.phys_unit = phys_unit;
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if (acpi_batteries_initted == 0) {
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if ((error = acpi_battery_init()) != 0) {
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free(bp, M_ACPIBATT);
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return(error);
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}
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}
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TAILQ_INSERT_TAIL(&acpi_batteries, bp, link);
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acpi_batteries_units++;
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return(0);
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}
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