0193657b55
This is based on the patch submitted by Yuri Skripachov. Overview of the changes: - clarify double-use of some ACPI_BATT_STAT_* definitions - clean up undefined/extended status bits returned by _BST - warn about charging+discharging bits being set at the same time PR: kern/124744 Submitted by: Yuri Skripachov <y.skripachov@gmail.com> Tested by: Yuri Skripachov <y.skripachov@gmail.com> MFC after: 2 weeks
483 lines
13 KiB
C
483 lines
13 KiB
C
/*-
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* Copyright (c) 2005 Nate Lawson
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* Copyright (c) 2000 Munehiro Matsuda
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* Copyright (c) 2000 Takanori Watanabe
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* Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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/module.h>
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#include <sys/bus.h>
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#include <sys/ioccom.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <sys/malloc.h>
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#include <contrib/dev/acpica/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_ACPICMBAT, "acpicmbat", "ACPI control method battery data");
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/* Number of times to retry initialization before giving up. */
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#define ACPI_CMBAT_RETRY_MAX 6
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/* Check the battery once a minute. */
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#define CMBAT_POLLRATE (60 * hz)
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/* Hooks for the ACPI CA debugging infrastructure */
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#define _COMPONENT ACPI_BATTERY
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ACPI_MODULE_NAME("BATTERY")
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#define ACPI_BATTERY_BST_CHANGE 0x80
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#define ACPI_BATTERY_BIF_CHANGE 0x81
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struct acpi_cmbat_softc {
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device_t dev;
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int flags;
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struct acpi_bif bif;
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struct acpi_bst bst;
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struct timespec bst_lastupdated;
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};
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ACPI_SERIAL_DECL(cmbat, "ACPI cmbat");
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static int acpi_cmbat_probe(device_t dev);
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static int acpi_cmbat_attach(device_t dev);
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static int acpi_cmbat_detach(device_t dev);
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static int acpi_cmbat_resume(device_t dev);
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static void acpi_cmbat_notify_handler(ACPI_HANDLE h, UINT32 notify,
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void *context);
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static int acpi_cmbat_info_expired(struct timespec *lastupdated);
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static void acpi_cmbat_info_updated(struct timespec *lastupdated);
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static void acpi_cmbat_get_bst(void *arg);
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static void acpi_cmbat_get_bif_task(void *arg);
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static void acpi_cmbat_get_bif(void *arg);
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static int acpi_cmbat_bst(device_t dev, struct acpi_bst *bstp);
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static int acpi_cmbat_bif(device_t dev, struct acpi_bif *bifp);
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static void acpi_cmbat_init_battery(void *arg);
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static device_method_t acpi_cmbat_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, acpi_cmbat_probe),
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DEVMETHOD(device_attach, acpi_cmbat_attach),
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DEVMETHOD(device_detach, acpi_cmbat_detach),
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DEVMETHOD(device_resume, acpi_cmbat_resume),
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/* ACPI battery interface */
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DEVMETHOD(acpi_batt_get_info, acpi_cmbat_bif),
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DEVMETHOD(acpi_batt_get_status, acpi_cmbat_bst),
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{0, 0}
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};
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static driver_t acpi_cmbat_driver = {
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"battery",
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acpi_cmbat_methods,
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sizeof(struct acpi_cmbat_softc),
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};
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static devclass_t acpi_cmbat_devclass;
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DRIVER_MODULE(acpi_cmbat, acpi, acpi_cmbat_driver, acpi_cmbat_devclass, 0, 0);
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MODULE_DEPEND(acpi_cmbat, acpi, 1, 1, 1);
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static int
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acpi_cmbat_probe(device_t dev)
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{
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static char *cmbat_ids[] = { "PNP0C0A", NULL };
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if (acpi_disabled("cmbat") ||
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ACPI_ID_PROBE(device_get_parent(dev), dev, cmbat_ids) == NULL)
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return (ENXIO);
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device_set_desc(dev, "ACPI Control Method Battery");
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return (0);
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}
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static int
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acpi_cmbat_attach(device_t dev)
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{
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int error;
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ACPI_HANDLE handle;
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struct acpi_cmbat_softc *sc;
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sc = device_get_softc(dev);
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handle = acpi_get_handle(dev);
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sc->dev = dev;
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timespecclear(&sc->bst_lastupdated);
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error = acpi_battery_register(dev);
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if (error != 0) {
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device_printf(dev, "registering battery failed\n");
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return (error);
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}
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/*
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* Install a system notify handler in addition to the device notify.
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* Toshiba notebook uses this alternate notify for its battery.
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*/
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AcpiInstallNotifyHandler(handle, ACPI_ALL_NOTIFY,
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acpi_cmbat_notify_handler, dev);
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AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_cmbat_init_battery, dev);
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return (0);
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}
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static int
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acpi_cmbat_detach(device_t dev)
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{
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ACPI_HANDLE handle;
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handle = acpi_get_handle(dev);
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AcpiRemoveNotifyHandler(handle, ACPI_ALL_NOTIFY, acpi_cmbat_notify_handler);
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acpi_battery_remove(dev);
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return (0);
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}
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static int
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acpi_cmbat_resume(device_t dev)
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{
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AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_cmbat_init_battery, dev);
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return (0);
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}
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static void
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acpi_cmbat_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
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{
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struct acpi_cmbat_softc *sc;
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device_t dev;
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dev = (device_t)context;
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sc = device_get_softc(dev);
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switch (notify) {
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case ACPI_NOTIFY_DEVICE_CHECK:
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case ACPI_BATTERY_BST_CHANGE:
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/*
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* Clear the last updated time. The next call to retrieve the
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* battery status will get the new value for us.
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*/
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timespecclear(&sc->bst_lastupdated);
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break;
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case ACPI_NOTIFY_BUS_CHECK:
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case ACPI_BATTERY_BIF_CHANGE:
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/*
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* Queue a callback to get the current battery info from thread
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* context. It's not safe to block in a notify handler.
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*/
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AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_cmbat_get_bif_task, dev);
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break;
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}
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acpi_UserNotify("CMBAT", h, notify);
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}
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static int
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acpi_cmbat_info_expired(struct timespec *lastupdated)
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{
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struct timespec curtime;
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ACPI_SERIAL_ASSERT(cmbat);
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if (lastupdated == NULL)
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return (TRUE);
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if (!timespecisset(lastupdated))
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return (TRUE);
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getnanotime(&curtime);
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timespecsub(&curtime, lastupdated);
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return (curtime.tv_sec < 0 ||
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curtime.tv_sec > acpi_battery_get_info_expire());
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}
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static void
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acpi_cmbat_info_updated(struct timespec *lastupdated)
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{
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ACPI_SERIAL_ASSERT(cmbat);
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if (lastupdated != NULL)
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getnanotime(lastupdated);
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}
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static void
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acpi_cmbat_get_bst(void *arg)
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{
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struct acpi_cmbat_softc *sc;
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ACPI_STATUS as;
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ACPI_OBJECT *res;
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ACPI_HANDLE h;
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ACPI_BUFFER bst_buffer;
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device_t dev;
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ACPI_SERIAL_ASSERT(cmbat);
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dev = arg;
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sc = device_get_softc(dev);
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h = acpi_get_handle(dev);
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bst_buffer.Pointer = NULL;
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bst_buffer.Length = ACPI_ALLOCATE_BUFFER;
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if (!acpi_cmbat_info_expired(&sc->bst_lastupdated))
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goto end;
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as = AcpiEvaluateObject(h, "_BST", NULL, &bst_buffer);
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if (ACPI_FAILURE(as)) {
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"error fetching current battery status -- %s\n",
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AcpiFormatException(as));
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goto end;
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}
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res = (ACPI_OBJECT *)bst_buffer.Pointer;
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if (!ACPI_PKG_VALID(res, 4)) {
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"battery status corrupted\n");
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goto end;
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}
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if (acpi_PkgInt32(res, 0, &sc->bst.state) != 0)
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goto end;
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if (acpi_PkgInt32(res, 1, &sc->bst.rate) != 0)
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goto end;
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if (acpi_PkgInt32(res, 2, &sc->bst.cap) != 0)
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goto end;
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if (acpi_PkgInt32(res, 3, &sc->bst.volt) != 0)
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goto end;
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acpi_cmbat_info_updated(&sc->bst_lastupdated);
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/* Clear out undefined/extended bits that might be set by hardware. */
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sc->bst.state &= ACPI_BATT_STAT_BST_MASK;
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if ((sc->bst.state & ACPI_BATT_STAT_INVALID) == ACPI_BATT_STAT_INVALID)
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"battery reports simultaneous charging and discharging\n");
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/* XXX If all batteries are critical, perhaps we should suspend. */
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if (sc->bst.state & ACPI_BATT_STAT_CRITICAL) {
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if ((sc->flags & ACPI_BATT_STAT_CRITICAL) == 0) {
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sc->flags |= ACPI_BATT_STAT_CRITICAL;
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device_printf(dev, "critically low charge!\n");
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}
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} else
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sc->flags &= ~ACPI_BATT_STAT_CRITICAL;
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end:
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if (bst_buffer.Pointer != NULL)
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AcpiOsFree(bst_buffer.Pointer);
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}
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/* XXX There should be a cleaner way to do this locking. */
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static void
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acpi_cmbat_get_bif_task(void *arg)
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{
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ACPI_SERIAL_BEGIN(cmbat);
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acpi_cmbat_get_bif(arg);
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ACPI_SERIAL_END(cmbat);
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}
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static void
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acpi_cmbat_get_bif(void *arg)
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{
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struct acpi_cmbat_softc *sc;
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ACPI_STATUS as;
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ACPI_OBJECT *res;
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ACPI_HANDLE h;
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ACPI_BUFFER bif_buffer;
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device_t dev;
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ACPI_SERIAL_ASSERT(cmbat);
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dev = arg;
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sc = device_get_softc(dev);
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h = acpi_get_handle(dev);
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bif_buffer.Pointer = NULL;
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bif_buffer.Length = ACPI_ALLOCATE_BUFFER;
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as = AcpiEvaluateObject(h, "_BIF", NULL, &bif_buffer);
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if (ACPI_FAILURE(as)) {
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"error fetching current battery info -- %s\n",
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AcpiFormatException(as));
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goto end;
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}
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res = (ACPI_OBJECT *)bif_buffer.Pointer;
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if (!ACPI_PKG_VALID(res, 13)) {
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"battery info corrupted\n");
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goto end;
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}
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if (acpi_PkgInt32(res, 0, &sc->bif.units) != 0)
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goto end;
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if (acpi_PkgInt32(res, 1, &sc->bif.dcap) != 0)
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goto end;
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if (acpi_PkgInt32(res, 2, &sc->bif.lfcap) != 0)
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goto end;
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if (acpi_PkgInt32(res, 3, &sc->bif.btech) != 0)
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goto end;
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if (acpi_PkgInt32(res, 4, &sc->bif.dvol) != 0)
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goto end;
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if (acpi_PkgInt32(res, 5, &sc->bif.wcap) != 0)
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goto end;
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if (acpi_PkgInt32(res, 6, &sc->bif.lcap) != 0)
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goto end;
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if (acpi_PkgInt32(res, 7, &sc->bif.gra1) != 0)
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goto end;
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if (acpi_PkgInt32(res, 8, &sc->bif.gra2) != 0)
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goto end;
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if (acpi_PkgStr(res, 9, sc->bif.model, ACPI_CMBAT_MAXSTRLEN) != 0)
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goto end;
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if (acpi_PkgStr(res, 10, sc->bif.serial, ACPI_CMBAT_MAXSTRLEN) != 0)
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goto end;
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if (acpi_PkgStr(res, 11, sc->bif.type, ACPI_CMBAT_MAXSTRLEN) != 0)
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goto end;
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if (acpi_PkgStr(res, 12, sc->bif.oeminfo, ACPI_CMBAT_MAXSTRLEN) != 0)
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goto end;
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end:
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if (bif_buffer.Pointer != NULL)
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AcpiOsFree(bif_buffer.Pointer);
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}
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static int
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acpi_cmbat_bif(device_t dev, struct acpi_bif *bifp)
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{
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struct acpi_cmbat_softc *sc;
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sc = device_get_softc(dev);
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/*
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* Just copy the data. The only value that should change is the
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* last-full capacity, so we only update when we get a notify that says
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* the info has changed. Many systems apparently take a long time to
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* process a _BIF call so we avoid it if possible.
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*/
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ACPI_SERIAL_BEGIN(cmbat);
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bifp->units = sc->bif.units;
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bifp->dcap = sc->bif.dcap;
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bifp->lfcap = sc->bif.lfcap;
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bifp->btech = sc->bif.btech;
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bifp->dvol = sc->bif.dvol;
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bifp->wcap = sc->bif.wcap;
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bifp->lcap = sc->bif.lcap;
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bifp->gra1 = sc->bif.gra1;
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bifp->gra2 = sc->bif.gra2;
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strncpy(bifp->model, sc->bif.model, sizeof(sc->bif.model));
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strncpy(bifp->serial, sc->bif.serial, sizeof(sc->bif.serial));
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strncpy(bifp->type, sc->bif.type, sizeof(sc->bif.type));
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strncpy(bifp->oeminfo, sc->bif.oeminfo, sizeof(sc->bif.oeminfo));
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ACPI_SERIAL_END(cmbat);
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return (0);
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}
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static int
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acpi_cmbat_bst(device_t dev, struct acpi_bst *bstp)
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{
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struct acpi_cmbat_softc *sc;
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sc = device_get_softc(dev);
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ACPI_SERIAL_BEGIN(cmbat);
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if (acpi_BatteryIsPresent(dev)) {
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acpi_cmbat_get_bst(dev);
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bstp->state = sc->bst.state;
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bstp->rate = sc->bst.rate;
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bstp->cap = sc->bst.cap;
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bstp->volt = sc->bst.volt;
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} else
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bstp->state = ACPI_BATT_STAT_NOT_PRESENT;
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ACPI_SERIAL_END(cmbat);
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return (0);
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}
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static void
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acpi_cmbat_init_battery(void *arg)
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{
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struct acpi_cmbat_softc *sc;
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int retry, valid;
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device_t dev;
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dev = (device_t)arg;
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sc = device_get_softc(dev);
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"battery initialization start\n");
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/*
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* Try repeatedly to get valid data from the battery. Since the
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* embedded controller isn't always ready just after boot, we may have
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* to wait a while.
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*/
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for (retry = 0; retry < ACPI_CMBAT_RETRY_MAX; retry++, AcpiOsSleep(10000)) {
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/* batteries on DOCK can be ejected w/ DOCK during retrying */
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if (!device_is_attached(dev))
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return;
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if (!acpi_BatteryIsPresent(dev))
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continue;
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/*
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* Only query the battery if this is the first try or the specific
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* type of info is still invalid.
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*/
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ACPI_SERIAL_BEGIN(cmbat);
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if (retry == 0 || !acpi_battery_bst_valid(&sc->bst)) {
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timespecclear(&sc->bst_lastupdated);
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acpi_cmbat_get_bst(dev);
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}
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if (retry == 0 || !acpi_battery_bif_valid(&sc->bif))
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acpi_cmbat_get_bif(dev);
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valid = acpi_battery_bst_valid(&sc->bst) &&
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acpi_battery_bif_valid(&sc->bif);
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ACPI_SERIAL_END(cmbat);
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if (valid)
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break;
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}
|
|
|
|
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);
|
|
}
|
|
}
|