592 lines
16 KiB
C
592 lines
16 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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#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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static MALLOC_DEFINE(M_ACPICMBAT, "acpicmbat",
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"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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#define ACPI_BATTERY_BIX_CHANGE ACPI_BATTERY_BIF_CHANGE
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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_bix bix;
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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_bix_task(void *arg);
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static void acpi_cmbat_get_bix(void *arg);
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static int acpi_cmbat_bst(device_t, struct acpi_bst *);
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static int acpi_cmbat_bix(device_t, void *, size_t);
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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_bix),
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DEVMETHOD(acpi_batt_get_status, acpi_cmbat_bst),
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DEVMETHOD_END
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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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DRIVER_MODULE(acpi_cmbat, acpi, acpi_cmbat_driver, 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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int rv;
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if (acpi_disabled("cmbat"))
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return (ENXIO);
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rv = ACPI_ID_PROBE(device_get_parent(dev), dev, cmbat_ids, NULL);
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if (rv <= 0)
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device_set_desc(dev, "ACPI Control Method Battery");
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return (rv);
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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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/*
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* Force any pending notification handler calls to complete by
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* requesting cmbat serialisation while freeing and clearing the
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* softc pointer:
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*/
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ACPI_SERIAL_BEGIN(cmbat);
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device_set_softc(dev, NULL);
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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_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_BIX_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_bix_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, &curtime);
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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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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_bix_task(void *arg)
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{
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ACPI_SERIAL_BEGIN(cmbat);
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acpi_cmbat_get_bix(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_bix(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 bix_buffer;
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device_t dev;
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int i, n;
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const struct {
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enum { _BIX, _BIF } type;
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char *name;
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} bobjs[] = {
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{ _BIX, "_BIX"},
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{ _BIF, "_BIF"},
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};
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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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bix_buffer.Pointer = NULL;
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bix_buffer.Length = ACPI_ALLOCATE_BUFFER;
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for (n = 0; n < sizeof(bobjs); n++) {
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as = AcpiEvaluateObject(h, bobjs[n].name, NULL, &bix_buffer);
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if (!ACPI_FAILURE(as)) {
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res = (ACPI_OBJECT *)bix_buffer.Pointer;
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break;
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}
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AcpiOsFree(bix_buffer.Pointer);
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bix_buffer.Pointer = NULL;
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bix_buffer.Length = ACPI_ALLOCATE_BUFFER;
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}
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/* Both _BIF and _BIX were not found. */
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if (n == sizeof(bobjs)) {
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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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/*
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* ACPI _BIX and _BIF revision mismatch check:
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*
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* 1. _BIF has no revision field. The number of fields must be 13.
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*
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* 2. _BIX has a revision field. As of ACPI 6.3 it must be "0" or
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* "1". The number of fields will be checked---20 and 21,
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* respectively.
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*
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* If the revision number is grater than "1" and the number of
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* fields is grater than 21, it will be treated as compatible with
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* ACPI 6.0 _BIX. If not, it will be ignored.
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*/
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i = 0;
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switch (bobjs[n].type) {
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case _BIX:
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if (acpi_PkgInt16(res, i++, &sc->bix.rev) != 0) {
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"_BIX revision error\n");
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goto end;
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}
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#define ACPI_BIX_REV_MISMATCH_ERR(x, r) do { \
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), \
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"_BIX revision mismatch (%u != %u)\n", x, r); \
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goto end; \
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} while (0)
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if (ACPI_PKG_VALID_EQ(res, 21)) { /* ACPI 6.0 _BIX */
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/*
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* Some models have rev.0 _BIX with 21 members.
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* In that case, treat the first 20 members as rev.0 _BIX.
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*/
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if (sc->bix.rev != ACPI_BIX_REV_0 &&
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sc->bix.rev != ACPI_BIX_REV_1)
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ACPI_BIX_REV_MISMATCH_ERR(sc->bix.rev, ACPI_BIX_REV_1);
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} else if (ACPI_PKG_VALID_EQ(res, 20)) {/* ACPI 4.0 _BIX */
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if (sc->bix.rev != ACPI_BIX_REV_0)
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ACPI_BIX_REV_MISMATCH_ERR(sc->bix.rev, ACPI_BIX_REV_0);
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} else if (ACPI_PKG_VALID(res, 22)) {
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/* _BIX with 22 or more members. */
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if (ACPI_BIX_REV_MIN_CHECK(sc->bix.rev, ACPI_BIX_REV_1 + 1)) {
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/*
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* Unknown revision number.
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* Assume 21 members are compatible with 6.0 _BIX.
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*/
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"Unknown _BIX revision(%u). "
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"Assuming compatible with revision %u.\n",
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sc->bix.rev, ACPI_BIX_REV_1);
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} else {
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/*
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* Known revision number. Ignore the extra members.
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*/
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"Extra objects found in _BIX were ignored.\n");
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}
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} else {
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/* Invalid _BIX. Ignore it. */
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"Invalid _BIX found (rev=%u, count=%u). Ignored.\n",
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sc->bix.rev, res->Package.Count);
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goto end;
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}
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break;
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#undef ACPI_BIX_REV_MISMATCH_ERR
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case _BIF:
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if (ACPI_PKG_VALID_EQ(res, 13)) /* _BIF */
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sc->bix.rev = ACPI_BIX_REV_BIF;
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else {
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"Invalid _BIF found (count=%u). Ignored.\n",
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res->Package.Count);
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goto end;
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}
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break;
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}
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"rev = %04x\n", sc->bix.rev);
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#define BIX_GETU32(NAME) do { \
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev), \
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#NAME " = %u\n", sc->bix.NAME); \
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if (acpi_PkgInt32(res, i++, &sc->bix.NAME) != 0) \
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goto end; \
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} while (0)
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BIX_GETU32(units);
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BIX_GETU32(dcap);
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BIX_GETU32(lfcap);
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BIX_GETU32(btech);
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BIX_GETU32(dvol);
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BIX_GETU32(wcap);
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BIX_GETU32(lcap);
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if (ACPI_BIX_REV_MIN_CHECK(sc->bix.rev, ACPI_BIX_REV_0)) {
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BIX_GETU32(cycles);
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BIX_GETU32(accuracy);
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BIX_GETU32(stmax);
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BIX_GETU32(stmin);
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BIX_GETU32(aimax);
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BIX_GETU32(aimin);
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}
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BIX_GETU32(gra1);
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BIX_GETU32(gra2);
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if (acpi_PkgStr(res, i++, sc->bix.model, ACPI_CMBAT_MAXSTRLEN) != 0)
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goto end;
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if (acpi_PkgStr(res, i++, sc->bix.serial, ACPI_CMBAT_MAXSTRLEN) != 0)
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goto end;
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if (acpi_PkgStr(res, i++, sc->bix.type, ACPI_CMBAT_MAXSTRLEN) != 0)
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goto end;
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if (acpi_PkgStr(res, i++, sc->bix.oeminfo, ACPI_CMBAT_MAXSTRLEN) != 0)
|
|
goto end;
|
|
if (ACPI_BIX_REV_MIN_CHECK(sc->bix.rev, ACPI_BIX_REV_1))
|
|
BIX_GETU32(scap);
|
|
#undef BIX_GETU32
|
|
end:
|
|
AcpiOsFree(bix_buffer.Pointer);
|
|
}
|
|
|
|
static int
|
|
acpi_cmbat_bix(device_t dev, void *bix, size_t len)
|
|
{
|
|
struct acpi_cmbat_softc *sc;
|
|
|
|
if (len != sizeof(struct acpi_bix) &&
|
|
len != sizeof(struct acpi_bif))
|
|
return (-1);
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
/*
|
|
* Just copy the data. The only value that should change is the
|
|
* last-full capacity, so we only update when we get a notify that says
|
|
* the info has changed. Many systems apparently take a long time to
|
|
* process a _BI[FX] call so we avoid it if possible.
|
|
*/
|
|
ACPI_SERIAL_BEGIN(cmbat);
|
|
memcpy(bix, &sc->bix, len);
|
|
ACPI_SERIAL_END(cmbat);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
acpi_cmbat_bst(device_t dev, struct acpi_bst *bst)
|
|
{
|
|
struct acpi_cmbat_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
ACPI_SERIAL_BEGIN(cmbat);
|
|
if (acpi_BatteryIsPresent(dev)) {
|
|
acpi_cmbat_get_bst(dev);
|
|
memcpy(bst, &sc->bst, sizeof(*bst));
|
|
} else
|
|
bst->state = ACPI_BATT_STAT_NOT_PRESENT;
|
|
ACPI_SERIAL_END(cmbat);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
acpi_cmbat_init_battery(void *arg)
|
|
{
|
|
struct acpi_cmbat_softc *sc;
|
|
int retry, valid;
|
|
device_t dev;
|
|
|
|
dev = (device_t)arg;
|
|
ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
|
|
"battery initialization start\n");
|
|
|
|
/*
|
|
* Try repeatedly to get valid data from the battery. Since the
|
|
* embedded controller isn't always ready just after boot, we may have
|
|
* to wait a while.
|
|
*/
|
|
for (retry = 0; retry < ACPI_CMBAT_RETRY_MAX; retry++, AcpiOsSleep(10000)) {
|
|
/*
|
|
* Batteries on DOCK can be ejected w/ DOCK during retrying.
|
|
*
|
|
* If there is a valid softc pointer the device may be in
|
|
* attaching, attached or detaching state. If the state is
|
|
* different from attached retry getting the device state
|
|
* until it becomes stable. This solves a race if the ACPI
|
|
* notification handler is called during attach, because
|
|
* device_is_attached() doesn't return non-zero until after
|
|
* the attach code has been executed.
|
|
*/
|
|
ACPI_SERIAL_BEGIN(cmbat);
|
|
sc = device_get_softc(dev);
|
|
if (sc == NULL) {
|
|
ACPI_SERIAL_END(cmbat);
|
|
return;
|
|
}
|
|
|
|
if (!acpi_BatteryIsPresent(dev) || !device_is_attached(dev)) {
|
|
ACPI_SERIAL_END(cmbat);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Only query the battery if this is the first try or the specific
|
|
* type of info is still invalid.
|
|
*/
|
|
if (retry == 0 || !acpi_battery_bst_valid(&sc->bst)) {
|
|
timespecclear(&sc->bst_lastupdated);
|
|
acpi_cmbat_get_bst(dev);
|
|
}
|
|
if (retry == 0 || !acpi_battery_bix_valid(&sc->bix))
|
|
acpi_cmbat_get_bix(dev);
|
|
|
|
valid = acpi_battery_bst_valid(&sc->bst) &&
|
|
acpi_battery_bix_valid(&sc->bix);
|
|
ACPI_SERIAL_END(cmbat);
|
|
|
|
if (valid)
|
|
break;
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|