244 lines
6.5 KiB
C
244 lines
6.5 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"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/bus.h>
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#include <sys/ioccom.h>
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#include <sys/sysctl.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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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 int acpi_battery_info_expire = 5;
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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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struct acpi_batteries *bp;
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int i;
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if (logical_unit < 0 || logical_unit >= acpi_batteries_units)
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return (ENXIO);
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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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struct acpi_battdesc battdesc;
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int error;
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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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error = acpi_battery_get_battdesc(unit, &battdesc);
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if (error != 0)
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goto out;
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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, 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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int
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acpi_battery_get_info_expire(void)
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{
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return (acpi_battery_info_expire);
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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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union acpi_battery_ioctl_arg *ioctl_arg;
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int error, logical_unit;
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ioctl_arg = (union acpi_battery_ioctl_arg *)addr;
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error = 0;
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/*
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* No security check required: information retrieval only. If
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* new functions are added here, a check might be required.
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*/
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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, &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, 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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struct acpi_softc *sc;
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device_t dev;
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int error;
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dev = devclass_get_device(devclass_find("acpi"), 0);
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if (dev == NULL)
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return (ENXIO);
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sc = device_get_softc(dev);
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if (sc == NULL)
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return (ENXIO);
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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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error = acpi_register_ioctl(ACPIIO_BATT_GET_UNITS, acpi_battery_ioctl,
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NULL);
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if (error != 0)
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return (error);
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error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTDESC, acpi_battery_ioctl,
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NULL);
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if (error != 0)
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return (error);
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error = acpi_register_ioctl(ACPIIO_BATT_GET_BATTINFO, acpi_battery_ioctl,
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NULL);
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if (error != 0)
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return (error);
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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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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, "info_expire", CTLFLAG_RD | CTLFLAG_RW,
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&acpi_battery_info_expire, 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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struct acpi_batteries *bp;
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int error;
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error = 0;
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bp = malloc(sizeof(*bp), M_ACPIBATT, M_NOWAIT);
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if (bp == NULL)
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return (ENOMEM);
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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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