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NetBSD/sys/dev/acpi/acpi_apm.c

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/* $NetBSD: acpi_apm.c,v 1.3 2006/07/12 13:16:36 hira Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas and by Jared McNeill.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Autoconfiguration support for the Intel ACPI Component Architecture
* ACPI reference implementation.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: acpi_apm.c,v 1.3 2006/07/12 13:16:36 hira Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/sysctl.h>
#include <sys/select.h>
#include <sys/envsys.h>
#include <dev/sysmon/sysmonvar.h>
#include <dev/acpi/acpica.h>
#include <dev/apm/apmvar.h>
static void acpiapm_disconnect(void *);
static void acpiapm_enable(void *, int);
static int acpiapm_set_powstate(void *, u_int, u_int);
static int acpiapm_get_powstat(void *, u_int, struct apm_power_info *);
static int acpiapm_get_event(void *, u_int *, u_int *);
static void acpiapm_cpu_busy(void *);
static void acpiapm_cpu_idle(void *);
static void acpiapm_get_capabilities(void *, u_int *, u_int *);
struct apm_accessops acpiapm_accessops = {
acpiapm_disconnect,
acpiapm_enable,
acpiapm_set_powstate,
acpiapm_get_powstat,
acpiapm_get_event,
acpiapm_cpu_busy,
acpiapm_cpu_idle,
acpiapm_get_capabilities,
};
#ifdef ACPI_APM_DEBUG
#define DPRINTF(a) uprintf a
#else
#define DPRINTF(a)
#endif
struct acpi_softc;
extern ACPI_STATUS acpi_enter_sleep_state(struct acpi_softc *, int);
static int acpiapm_match(struct device *, struct cfdata *, void *);
static void acpiapm_attach(struct device *, struct device *, void *);
CFATTACH_DECL(acpiapm, sizeof(struct apm_softc),
acpiapm_match, acpiapm_attach, NULL, NULL);
static int
acpiapm_match(struct device *parent, struct cfdata *match, void *aux)
{
return apm_match();
}
static void
acpiapm_attach(struct device *parent, struct device *self, void *aux)
{
struct apm_softc *sc = (struct apm_softc *)self;
sc->sc_ops = &acpiapm_accessops;
sc->sc_cookie = parent;
sc->sc_vers = 0x0102;
sc->sc_detail = 0;
sc->sc_hwflags = APM_F_DONT_RUN_HOOKS;
apm_attach(sc);
}
/*****************************************************************************
* Minimalistic ACPI /dev/apm emulation support, for ACPI suspend
*****************************************************************************/
static void
acpiapm_disconnect(void *opaque)
{
return;
}
static void
acpiapm_enable(void *opaque, int onoff)
{
return;
}
static int
acpiapm_set_powstate(void *opaque, u_int devid, u_int powstat)
{
struct acpi_softc *sc = opaque;
if (devid != APM_DEV_ALLDEVS)
return APM_ERR_UNRECOG_DEV;
switch (powstat) {
case APM_SYS_READY:
break;
case APM_SYS_STANDBY:
acpi_enter_sleep_state(sc, ACPI_STATE_S1);
break;
case APM_SYS_SUSPEND:
acpi_enter_sleep_state(sc, ACPI_STATE_S3);
break;
case APM_SYS_OFF:
break;
case APM_LASTREQ_INPROG:
break;
case APM_LASTREQ_REJECTED:
break;
}
return 0;
}
static int
acpiapm_get_powstat(void *opaque, u_int batteryid, struct apm_power_info *pinfo)
{
int i, curcap, lowcap, warncap, cap, descap, lastcap, discharge;
envsys_tre_data_t etds;
envsys_basic_info_t ebis;
curcap = lowcap = warncap = cap = descap = lastcap = discharge = -1;
(void)memset(pinfo, 0, sizeof(*pinfo));
pinfo->ac_state = APM_AC_UNKNOWN;
pinfo->minutes_valid = 0;
pinfo->minutes_left = 0xffff;
pinfo->batteryid = 0;
pinfo->nbattery = 1;
pinfo->battery_flags = 0;
pinfo->battery_state = APM_BATT_UNKNOWN;
pinfo->battery_life = APM_BATT_LIFE_UNKNOWN;
for (i = 0;; i++) {
const char *desc;
int data;
int flags;
ebis.sensor = i;
if (sysmonioctl_envsys(0, ENVSYS_GTREINFO, (void *)&ebis, 0,
NULL) || (ebis.validflags & ENVSYS_FVALID) == 0)
break;
etds.sensor = i;
if (sysmonioctl_envsys(0, ENVSYS_GTREDATA, (void *)&etds, 0,
NULL))
continue;
desc = ebis.desc;
flags = etds.validflags;
data = etds.cur.data_s;
DPRINTF(("%d %s %d %d\n", i, desc, data, flags));
if ((flags & ENVSYS_FCURVALID) == 0)
continue;
if (strstr(desc, " disconnected")) {
pinfo->ac_state = data ? APM_AC_OFF : APM_AC_ON;
break;
} else if (strstr(desc, " present") && data == 0) {
pinfo->battery_flags |= APM_BATT_FLAG_NO_SYSTEM_BATTERY;
pinfo->battery_state = APM_BATT_ABSENT;
} else if (strstr(desc, " charging") && data) {
pinfo->battery_flags |= APM_BATT_FLAG_CHARGING;
pinfo->battery_state = APM_BATT_CHARGING;
} else if (strstr(desc, " discharging") && data)
pinfo->battery_flags &= ~APM_BATT_FLAG_CHARGING;
else if (strstr(desc, " warn cap"))
warncap = data / 1000;
else if (strstr(desc, " low cap"))
lowcap = data / 1000;
else if (strstr(desc, " last full cap"))
lastcap = data / 1000;
else if (strstr(desc, " design cap"))
descap = data / 1000;
else if (strstr(desc, " charge") &&
strstr(desc, " charge rate") == NULL)
cap = data / 1000;
else if (strstr(desc, " discharge rate"))
discharge = data / 1000;
}
if (cap != -1) {
if (warncap != -1 && cap < warncap) {
pinfo->battery_flags |= APM_BATT_FLAG_CRITICAL;
pinfo->battery_state = APM_BATT_CRITICAL;
} else if (lowcap != -1 && cap < lowcap) {
pinfo->battery_flags |= APM_BATT_FLAG_LOW;
pinfo->battery_state = APM_BATT_LOW;
}
if (lastcap != -1 && lastcap != 0)
pinfo->battery_life = 100 * cap / lastcap;
else if (descap != -1 && descap != 0)
pinfo->battery_life = 100 * cap / descap;
}
if ((pinfo->battery_flags & APM_BATT_FLAG_CHARGING) == 0) {
if (discharge != -1 && cap != -1 && discharge != 0)
pinfo->minutes_left = 60 * cap / discharge;
if (pinfo->battery_state == APM_BATT_UNKNOWN)
pinfo->battery_state = pinfo->ac_state == APM_AC_ON ?
APM_BATT_HIGH : APM_BATT_LOW;
} else {
if (pinfo->battery_state == APM_BATT_UNKNOWN)
pinfo->battery_state = APM_BATT_HIGH;
}
DPRINTF(("%d %d %d %d %d %d\n", cap, warncap, lowcap, lastcap, descap,
discharge));
DPRINTF(("pinfo %d %d %d %d\n", pinfo->battery_flags,
pinfo->battery_state, pinfo->battery_life, pinfo->battery_life));
return 0;
}
static int
acpiapm_get_event(void *opaque, u_int *event_type, u_int *event_info)
{
return APM_ERR_NOEVENTS;
}
static void
acpiapm_cpu_busy(void *opaque)
{
return;
}
static void
acpiapm_cpu_idle(void *opaque)
{
return;
}
static void
acpiapm_get_capabilities(void *opaque, u_int *numbatts, u_int *capflags)
{
*numbatts = 1;
*capflags = APM_GLOBAL_STANDBY | APM_GLOBAL_SUSPEND;
return;
}
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