Home | History | Annotate | Line # | Download | only in sysmon
sysmon_envsys_events.c revision 1.57
      1  1.57  pgoyette /* $NetBSD: sysmon_envsys_events.c,v 1.57 2008/09/04 21:54:51 pgoyette Exp $ */
      2   1.1   xtraeme 
      3   1.1   xtraeme /*-
      4  1.51   xtraeme  * Copyright (c) 2007, 2008 Juan Romero Pardines.
      5   1.1   xtraeme  * All rights reserved.
      6   1.1   xtraeme  *
      7   1.1   xtraeme  * Redistribution and use in source and binary forms, with or without
      8   1.1   xtraeme  * modification, are permitted provided that the following conditions
      9   1.1   xtraeme  * are met:
     10   1.1   xtraeme  * 1. Redistributions of source code must retain the above copyright
     11   1.1   xtraeme  *    notice, this list of conditions and the following disclaimer.
     12   1.1   xtraeme  * 2. Redistributions in binary form must reproduce the above copyright
     13   1.1   xtraeme  *    notice, this list of conditions and the following disclaimer in the
     14   1.1   xtraeme  *    documentation and/or other materials provided with the distribution.
     15   1.1   xtraeme  *
     16  1.36   xtraeme  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  1.36   xtraeme  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  1.36   xtraeme  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  1.36   xtraeme  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  1.36   xtraeme  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  1.36   xtraeme  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  1.36   xtraeme  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  1.36   xtraeme  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  1.36   xtraeme  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  1.36   xtraeme  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26   1.1   xtraeme  */
     27   1.1   xtraeme 
     28   1.1   xtraeme /*
     29   1.1   xtraeme  * sysmon_envsys(9) events framework.
     30   1.1   xtraeme  */
     31   1.1   xtraeme 
     32   1.1   xtraeme #include <sys/cdefs.h>
     33  1.57  pgoyette __KERNEL_RCSID(0, "$NetBSD: sysmon_envsys_events.c,v 1.57 2008/09/04 21:54:51 pgoyette Exp $");
     34   1.1   xtraeme 
     35   1.1   xtraeme #include <sys/param.h>
     36   1.1   xtraeme #include <sys/types.h>
     37   1.1   xtraeme #include <sys/conf.h>
     38   1.1   xtraeme #include <sys/errno.h>
     39   1.1   xtraeme #include <sys/kernel.h>
     40   1.1   xtraeme #include <sys/systm.h>
     41   1.1   xtraeme #include <sys/proc.h>
     42   1.1   xtraeme #include <sys/mutex.h>
     43   1.1   xtraeme #include <sys/kmem.h>
     44   1.1   xtraeme #include <sys/callout.h>
     45   1.1   xtraeme 
     46  1.32   xtraeme /* #define ENVSYS_DEBUG */
     47  1.56  pgoyette 
     48   1.1   xtraeme #include <dev/sysmon/sysmonvar.h>
     49   1.1   xtraeme #include <dev/sysmon/sysmon_envsysvar.h>
     50   1.1   xtraeme 
     51  1.10   xtraeme struct sme_sensor_event {
     52  1.10   xtraeme 	int		state;
     53  1.10   xtraeme 	int		event;
     54  1.10   xtraeme };
     55  1.10   xtraeme 
     56  1.10   xtraeme static const struct sme_sensor_event sme_sensor_event[] = {
     57  1.10   xtraeme 	{ ENVSYS_SVALID, 	PENVSYS_EVENT_NORMAL },
     58  1.10   xtraeme 	{ ENVSYS_SCRITICAL, 	PENVSYS_EVENT_CRITICAL },
     59  1.10   xtraeme 	{ ENVSYS_SCRITOVER, 	PENVSYS_EVENT_CRITOVER },
     60  1.10   xtraeme 	{ ENVSYS_SCRITUNDER, 	PENVSYS_EVENT_CRITUNDER },
     61  1.10   xtraeme 	{ ENVSYS_SWARNOVER, 	PENVSYS_EVENT_WARNOVER },
     62  1.10   xtraeme 	{ ENVSYS_SWARNUNDER,	PENVSYS_EVENT_WARNUNDER },
     63  1.10   xtraeme 	{ -1, 			-1 }
     64  1.10   xtraeme };
     65  1.10   xtraeme 
     66  1.51   xtraeme static bool sysmon_low_power;
     67   1.1   xtraeme 
     68  1.45   xtraeme #define SME_EVTIMO	(SME_EVENTS_DEFTIMEOUT * hz)
     69   1.3   xtraeme 
     70  1.44   xtraeme static bool sme_event_check_low_power(void);
     71  1.47   xtraeme static bool sme_battery_check(void);
     72  1.44   xtraeme static bool sme_battery_critical(envsys_data_t *);
     73  1.47   xtraeme static bool sme_acadapter_check(void);
     74  1.38   xtraeme 
     75   1.3   xtraeme /*
     76   1.1   xtraeme  * sme_event_register:
     77   1.1   xtraeme  *
     78  1.24   xtraeme  * 	+ Registers a new sysmon envsys event or updates any event
     79  1.24   xtraeme  * 	  already in the queue.
     80   1.1   xtraeme  */
     81   1.1   xtraeme int
     82  1.24   xtraeme sme_event_register(prop_dictionary_t sdict, envsys_data_t *edata,
     83  1.45   xtraeme 		   struct sysmon_envsys *sme, const char *objkey,
     84  1.24   xtraeme 		   int32_t critval, int crittype, int powertype)
     85   1.1   xtraeme {
     86  1.51   xtraeme 	sme_event_t *see = NULL, *osee = NULL;
     87  1.24   xtraeme 	prop_object_t obj;
     88  1.24   xtraeme 	bool critvalup = false;
     89   1.1   xtraeme 	int error = 0;
     90  1.56  pgoyette 	int real_crittype;
     91  1.56  pgoyette 	int32_t o_critval;
     92   1.1   xtraeme 
     93  1.45   xtraeme 	KASSERT(sdict != NULL || edata != NULL || sme != NULL);
     94  1.51   xtraeme 	/*
     95  1.51   xtraeme 	 * Allocate a new sysmon_envsys event.
     96  1.51   xtraeme 	 */
     97  1.51   xtraeme 	see = kmem_zalloc(sizeof(*see), KM_SLEEP);
     98  1.51   xtraeme 	if (see == NULL)
     99  1.51   xtraeme 		return ENOMEM;
    100   1.1   xtraeme 
    101  1.56  pgoyette 	/*
    102  1.56  pgoyette 	 * Map user-types to kernel types
    103  1.56  pgoyette 	 */
    104  1.56  pgoyette 	switch (crittype) {
    105  1.56  pgoyette 	case PENVSYS_EVENT_USER_CRITMAX:
    106  1.56  pgoyette 	case PENVSYS_EVENT_USER_CRITMIN:
    107  1.56  pgoyette 	case PENVSYS_EVENT_USER_WARNMAX:
    108  1.56  pgoyette 	case PENVSYS_EVENT_USER_WARNMIN:
    109  1.56  pgoyette 		real_crittype = PENVSYS_EVENT_USER_LIMITS;
    110  1.56  pgoyette 		break;
    111  1.56  pgoyette 	case PENVSYS_EVENT_BATT_USERCAP:
    112  1.56  pgoyette 	case PENVSYS_EVENT_BATT_USERWARN:
    113  1.56  pgoyette 		real_crittype = PENVSYS_EVENT_BATT_USER_LIMITS;
    114  1.56  pgoyette 		break;
    115  1.56  pgoyette 	default:
    116  1.56  pgoyette 		real_crittype = crittype;
    117  1.56  pgoyette 	}
    118  1.56  pgoyette 
    119   1.1   xtraeme 	/*
    120  1.24   xtraeme 	 * check if the event is already on the list and return
    121  1.24   xtraeme 	 * EEXIST if value provided hasn't been changed.
    122   1.1   xtraeme 	 */
    123  1.51   xtraeme 	mutex_enter(&sme->sme_mtx);
    124  1.51   xtraeme 	LIST_FOREACH(osee, &sme->sme_events_list, see_list) {
    125  1.51   xtraeme 		if (strcmp(edata->desc, osee->see_pes.pes_sensname) == 0)
    126  1.56  pgoyette 			if (real_crittype == osee->see_type) {
    127  1.56  pgoyette 				switch (crittype) {
    128  1.56  pgoyette 				case PENVSYS_EVENT_USER_CRITMAX:
    129  1.56  pgoyette 				case PENVSYS_EVENT_BATT_USERCAP:
    130  1.56  pgoyette 					o_critval = osee->see_critmax;
    131  1.56  pgoyette 					break;
    132  1.56  pgoyette 				case PENVSYS_EVENT_USER_WARNMAX:
    133  1.56  pgoyette 				case PENVSYS_EVENT_BATT_USERWARN:
    134  1.56  pgoyette 					o_critval = osee->see_warnmax;
    135  1.56  pgoyette 					break;
    136  1.56  pgoyette 				case PENVSYS_EVENT_USER_WARNMIN:
    137  1.56  pgoyette 					o_critval = osee->see_warnmin;
    138  1.56  pgoyette 					break;
    139  1.56  pgoyette 				case PENVSYS_EVENT_USER_CRITMIN:
    140  1.56  pgoyette 				default:
    141  1.56  pgoyette 					o_critval = osee->see_critmin;
    142  1.56  pgoyette 					break;
    143  1.56  pgoyette 				}
    144  1.56  pgoyette 				if (o_critval == critval) {
    145  1.24   xtraeme 					DPRINTF(("%s: dev=%s sensor=%s type=%d "
    146  1.24   xtraeme 				    	    "(already exists)\n", __func__,
    147  1.51   xtraeme 				    	    osee->see_pes.pes_dvname,
    148  1.51   xtraeme 				    	    osee->see_pes.pes_sensname,
    149  1.51   xtraeme 					    osee->see_type));
    150  1.52     rmind 					error = EEXIST;
    151  1.52     rmind 					goto out;
    152  1.24   xtraeme 				}
    153  1.24   xtraeme 				critvalup = true;
    154  1.24   xtraeme 				break;
    155   1.1   xtraeme 			}
    156  1.24   xtraeme 	}
    157  1.24   xtraeme 
    158  1.24   xtraeme 	/*
    159  1.24   xtraeme 	 * Critical condition operation requested by userland.
    160  1.24   xtraeme 	 */
    161  1.24   xtraeme 	if (objkey && critval && critvalup) {
    162  1.24   xtraeme 		obj = prop_dictionary_get(sdict, objkey);
    163  1.45   xtraeme 		if (obj && prop_object_type(obj) == PROP_TYPE_NUMBER) {
    164  1.24   xtraeme 			/*
    165  1.24   xtraeme 			 * object is already in dictionary and value
    166  1.24   xtraeme 			 * provided is not the same than we have
    167  1.51   xtraeme 			 * currently, update the critical value.
    168  1.24   xtraeme 			 */
    169  1.56  pgoyette 			switch (crittype) {
    170  1.56  pgoyette 			case PENVSYS_EVENT_USER_CRITMAX:
    171  1.56  pgoyette 			case PENVSYS_EVENT_BATT_USERCAP:
    172  1.56  pgoyette 				osee->see_critmax = critval;
    173  1.56  pgoyette 				break;
    174  1.56  pgoyette 			case PENVSYS_EVENT_USER_WARNMAX:
    175  1.56  pgoyette 			case PENVSYS_EVENT_BATT_USERWARN:
    176  1.56  pgoyette 				osee->see_warnmax = critval;
    177  1.56  pgoyette 				break;
    178  1.56  pgoyette 			case PENVSYS_EVENT_USER_WARNMIN:
    179  1.56  pgoyette 				osee->see_warnmin = critval;
    180  1.56  pgoyette 				break;
    181  1.56  pgoyette 			case PENVSYS_EVENT_USER_CRITMIN:
    182  1.56  pgoyette 			default:
    183  1.56  pgoyette 				osee->see_critmin = critval;
    184  1.56  pgoyette 				break;
    185  1.56  pgoyette 			}
    186  1.51   xtraeme 			DPRINTF(("%s: (%s) event [sensor=%s type=%d] "
    187  1.45   xtraeme 			    "(critval updated)\n", __func__, sme->sme_name,
    188  1.51   xtraeme 			    edata->desc, osee->see_type));
    189  1.24   xtraeme 			error = sme_sensor_upint32(sdict, objkey, critval);
    190  1.52     rmind 			goto out;
    191   1.1   xtraeme 		}
    192   1.1   xtraeme 	}
    193   1.1   xtraeme 
    194  1.51   xtraeme 	/*
    195  1.56  pgoyette 	 * New limit defined for existing event
    196  1.56  pgoyette 	 */
    197  1.56  pgoyette 	if (osee != NULL) {
    198  1.56  pgoyette 		osee->see_edata = edata;
    199  1.56  pgoyette 		switch (crittype) {
    200  1.56  pgoyette 		case PENVSYS_EVENT_USER_CRITMAX:
    201  1.56  pgoyette 		case PENVSYS_EVENT_BATT_USERCAP:
    202  1.56  pgoyette 			osee->see_critmax = critval;
    203  1.56  pgoyette 			break;
    204  1.56  pgoyette 		case PENVSYS_EVENT_USER_WARNMAX:
    205  1.56  pgoyette 		case PENVSYS_EVENT_BATT_USERWARN:
    206  1.56  pgoyette 			osee->see_warnmax = critval;
    207  1.56  pgoyette 			break;
    208  1.56  pgoyette 		case PENVSYS_EVENT_USER_WARNMIN:
    209  1.56  pgoyette 			osee->see_warnmin = critval;
    210  1.56  pgoyette 			break;
    211  1.56  pgoyette 		case PENVSYS_EVENT_USER_CRITMIN:
    212  1.56  pgoyette 		default:
    213  1.56  pgoyette 			osee->see_critmin = critval;
    214  1.56  pgoyette 			break;
    215  1.56  pgoyette 		}
    216  1.56  pgoyette 		if (objkey && critval) {
    217  1.56  pgoyette 			error = sme_sensor_upint32(sdict, objkey, critval);
    218  1.56  pgoyette 			if (error)
    219  1.56  pgoyette 				goto out;
    220  1.56  pgoyette 		}
    221  1.56  pgoyette 		DPRINTF(("%s: (%s) new limit added to existing event, type %d "
    222  1.56  pgoyette 		    "critmin=%" PRIu32 " warnmin=%" PRIu32 " warnmax=%"
    223  1.56  pgoyette 		    PRIu32 " critmax=%d\n", __func__, osee->see_sme->sme_name,
    224  1.56  pgoyette 		    osee->see_type, osee->see_critmin, osee->see_warnmin,
    225  1.56  pgoyette 		    osee->see_warnmax, osee->see_critmax));
    226  1.56  pgoyette 		goto out;
    227  1.56  pgoyette 	}
    228  1.56  pgoyette 	/*
    229  1.51   xtraeme 	 * New event requested.
    230  1.24   xtraeme 	 */
    231  1.45   xtraeme 	see->see_edata = edata;
    232  1.56  pgoyette 	switch (crittype) {
    233  1.56  pgoyette 	case PENVSYS_EVENT_USER_CRITMAX:
    234  1.56  pgoyette 	case PENVSYS_EVENT_BATT_USERCAP:
    235  1.56  pgoyette 		see->see_critmax = critval;
    236  1.56  pgoyette 		break;
    237  1.56  pgoyette 	case PENVSYS_EVENT_USER_WARNMAX:
    238  1.56  pgoyette 	case PENVSYS_EVENT_BATT_USERWARN:
    239  1.56  pgoyette 		see->see_warnmax = critval;
    240  1.56  pgoyette 		break;
    241  1.56  pgoyette 	case PENVSYS_EVENT_USER_WARNMIN:
    242  1.56  pgoyette 		see->see_warnmin = critval;
    243  1.56  pgoyette 		break;
    244  1.56  pgoyette 	case PENVSYS_EVENT_USER_CRITMIN:
    245  1.56  pgoyette 	default:
    246  1.56  pgoyette 		see->see_critmin = critval;
    247  1.56  pgoyette 		break;
    248  1.56  pgoyette 	}
    249  1.56  pgoyette 	see->see_type = real_crittype;
    250  1.45   xtraeme 	see->see_sme = sme;
    251  1.57  pgoyette 
    252  1.57  pgoyette 	/* Initialize sensor type and previously-sent state */
    253  1.57  pgoyette 
    254  1.57  pgoyette 	see->see_pes.pes_type = powertype;
    255  1.57  pgoyette 	switch (powertype) {
    256  1.57  pgoyette 	case PENVSYS_TYPE_BATTERY:
    257  1.57  pgoyette 		see->see_evsent = ENVSYS_BATTERY_CAPACITY_NORMAL;
    258  1.57  pgoyette 		break;
    259  1.57  pgoyette 	case PENVSYS_TYPE_DRIVE:
    260  1.57  pgoyette 		see->see_evsent = ENVSYS_DRIVE_EMPTY;
    261  1.57  pgoyette 		break;
    262  1.57  pgoyette 	case PENVSYS_TYPE_FAN:
    263  1.57  pgoyette 	case PENVSYS_TYPE_INDICATOR:
    264  1.57  pgoyette 	case PENVSYS_TYPE_TEMP:
    265  1.57  pgoyette 	case PENVSYS_TYPE_POWER:
    266  1.57  pgoyette 	case PENVSYS_TYPE_RESISTANCE:
    267  1.57  pgoyette 	case PENVSYS_TYPE_VOLTAGE:
    268  1.57  pgoyette 		see->see_evsent = ENVSYS_SVALID;
    269  1.57  pgoyette 		break;
    270  1.57  pgoyette 	default:
    271  1.57  pgoyette 		see->see_evsent = 0;
    272  1.57  pgoyette 	}
    273  1.57  pgoyette 
    274  1.45   xtraeme 	(void)strlcpy(see->see_pes.pes_dvname, sme->sme_name,
    275  1.45   xtraeme 	    sizeof(see->see_pes.pes_dvname));
    276  1.45   xtraeme 	(void)strlcpy(see->see_pes.pes_sensname, edata->desc,
    277  1.45   xtraeme 	    sizeof(see->see_pes.pes_sensname));
    278  1.24   xtraeme 
    279  1.45   xtraeme 	LIST_INSERT_HEAD(&sme->sme_events_list, see, see_list);
    280  1.27   xtraeme 	if (objkey && critval) {
    281  1.27   xtraeme 		error = sme_sensor_upint32(sdict, objkey, critval);
    282  1.45   xtraeme 		if (error)
    283  1.27   xtraeme 			goto out;
    284  1.27   xtraeme 	}
    285  1.51   xtraeme 	DPRINTF(("%s: (%s) event registered (sensor=%s snum=%d type=%d "
    286  1.56  pgoyette 	    "critmin=%" PRIu32 " warnmin=%" PRIu32 " warnmax=%" PRIu32
    287  1.56  pgoyette 	    " crixmax=%" PRIu32 ")\n", __func__,
    288  1.45   xtraeme 	    see->see_sme->sme_name, see->see_pes.pes_sensname,
    289  1.56  pgoyette 	    see->see_edata->sensor, see->see_type, see->see_critmin,
    290  1.56  pgoyette 	    see->see_warnmin, see->see_warnmax, see->see_critmax));
    291   1.1   xtraeme 	/*
    292  1.45   xtraeme 	 * Initialize the events framework if it wasn't initialized before.
    293   1.1   xtraeme 	 */
    294  1.45   xtraeme 	if ((sme->sme_flags & SME_CALLOUT_INITIALIZED) == 0)
    295  1.45   xtraeme 		error = sme_events_init(sme);
    296  1.27   xtraeme out:
    297  1.51   xtraeme 	mutex_exit(&sme->sme_mtx);
    298  1.53   xtraeme 	if (error || critvalup)
    299  1.24   xtraeme 		kmem_free(see, sizeof(*see));
    300   1.1   xtraeme 	return error;
    301   1.1   xtraeme }
    302   1.1   xtraeme 
    303   1.1   xtraeme /*
    304  1.18   xtraeme  * sme_event_unregister_all:
    305  1.18   xtraeme  *
    306  1.51   xtraeme  * 	+ Unregisters all events associated with a sysmon envsys device.
    307  1.18   xtraeme  */
    308  1.18   xtraeme void
    309  1.45   xtraeme sme_event_unregister_all(struct sysmon_envsys *sme)
    310  1.18   xtraeme {
    311  1.18   xtraeme 	sme_event_t *see;
    312  1.18   xtraeme 	int evcounter = 0;
    313  1.18   xtraeme 
    314  1.45   xtraeme 	KASSERT(sme != NULL);
    315  1.18   xtraeme 
    316  1.51   xtraeme 	mutex_enter(&sme->sme_mtx);
    317  1.45   xtraeme 	LIST_FOREACH(see, &sme->sme_events_list, see_list) {
    318  1.56  pgoyette 		while (see->see_flags & SEE_EVENT_WORKING)
    319  1.51   xtraeme 			cv_wait(&sme->sme_condvar, &sme->sme_mtx);
    320  1.51   xtraeme 
    321  1.45   xtraeme 		if (strcmp(see->see_pes.pes_dvname, sme->sme_name) == 0)
    322  1.18   xtraeme 			evcounter++;
    323  1.18   xtraeme 	}
    324  1.18   xtraeme 
    325  1.18   xtraeme 	DPRINTF(("%s: total events %d (%s)\n", __func__,
    326  1.45   xtraeme 	    evcounter, sme->sme_name));
    327  1.18   xtraeme 
    328  1.45   xtraeme 	while ((see = LIST_FIRST(&sme->sme_events_list))) {
    329  1.18   xtraeme 		if (evcounter == 0)
    330  1.18   xtraeme 			break;
    331  1.18   xtraeme 
    332  1.45   xtraeme 		if (strcmp(see->see_pes.pes_dvname, sme->sme_name) == 0) {
    333  1.51   xtraeme 			LIST_REMOVE(see, see_list);
    334  1.18   xtraeme 			DPRINTF(("%s: event %s %d removed (%s)\n", __func__,
    335  1.45   xtraeme 			    see->see_pes.pes_sensname, see->see_type,
    336  1.45   xtraeme 			    sme->sme_name));
    337  1.18   xtraeme 			kmem_free(see, sizeof(*see));
    338  1.18   xtraeme 			evcounter--;
    339  1.18   xtraeme 		}
    340  1.18   xtraeme 	}
    341  1.18   xtraeme 
    342  1.51   xtraeme 	if (LIST_EMPTY(&sme->sme_events_list))
    343  1.45   xtraeme 		if (sme->sme_flags & SME_CALLOUT_INITIALIZED)
    344  1.45   xtraeme 			sme_events_destroy(sme);
    345  1.51   xtraeme 	mutex_exit(&sme->sme_mtx);
    346  1.18   xtraeme }
    347  1.18   xtraeme 
    348  1.18   xtraeme /*
    349   1.1   xtraeme  * sme_event_unregister:
    350   1.1   xtraeme  *
    351  1.45   xtraeme  * 	+ Unregisters an event from the specified sysmon envsys device.
    352   1.1   xtraeme  */
    353   1.1   xtraeme int
    354  1.45   xtraeme sme_event_unregister(struct sysmon_envsys *sme, const char *sensor, int type)
    355   1.1   xtraeme {
    356   1.1   xtraeme 	sme_event_t *see;
    357   1.1   xtraeme 	bool found = false;
    358   1.1   xtraeme 
    359   1.1   xtraeme 	KASSERT(sensor != NULL);
    360   1.1   xtraeme 
    361  1.51   xtraeme 	mutex_enter(&sme->sme_mtx);
    362  1.45   xtraeme 	LIST_FOREACH(see, &sme->sme_events_list, see_list) {
    363  1.45   xtraeme 		if (strcmp(see->see_pes.pes_sensname, sensor) == 0) {
    364  1.45   xtraeme 			if (see->see_type == type) {
    365   1.1   xtraeme 				found = true;
    366   1.1   xtraeme 				break;
    367   1.1   xtraeme 			}
    368   1.1   xtraeme 		}
    369   1.1   xtraeme 	}
    370   1.1   xtraeme 
    371  1.51   xtraeme 	if (!found) {
    372  1.51   xtraeme 		mutex_exit(&sme->sme_mtx);
    373   1.1   xtraeme 		return EINVAL;
    374  1.51   xtraeme 	}
    375   1.1   xtraeme 
    376  1.51   xtraeme 	/*
    377  1.51   xtraeme 	 * Wait for the event to finish its work, remove from the list
    378  1.51   xtraeme 	 * and release resouces.
    379  1.51   xtraeme 	 */
    380  1.56  pgoyette 	while (see->see_flags & SEE_EVENT_WORKING)
    381  1.51   xtraeme 		cv_wait(&sme->sme_condvar, &sme->sme_mtx);
    382  1.15   xtraeme 
    383  1.51   xtraeme 	DPRINTF(("%s: removed dev=%s sensor=%s type=%d\n",
    384  1.45   xtraeme 	    __func__, see->see_pes.pes_dvname, sensor, type));
    385   1.1   xtraeme 	LIST_REMOVE(see, see_list);
    386   1.1   xtraeme 	/*
    387   1.1   xtraeme 	 * So the events list is empty, we'll do the following:
    388   1.1   xtraeme 	 *
    389   1.9   xtraeme 	 * 	- stop and destroy the callout.
    390   1.1   xtraeme 	 * 	- destroy the workqueue.
    391   1.1   xtraeme 	 */
    392  1.51   xtraeme 	if (LIST_EMPTY(&sme->sme_events_list))
    393  1.45   xtraeme 		sme_events_destroy(sme);
    394  1.51   xtraeme 	mutex_exit(&sme->sme_mtx);
    395   1.1   xtraeme 
    396  1.20   xtraeme 	kmem_free(see, sizeof(*see));
    397   1.1   xtraeme 	return 0;
    398   1.1   xtraeme }
    399   1.1   xtraeme 
    400   1.1   xtraeme /*
    401   1.1   xtraeme  * sme_event_drvadd:
    402   1.1   xtraeme  *
    403  1.45   xtraeme  * 	+ Registers a new event for a device that had enabled any of
    404  1.45   xtraeme  * 	  the monitoring flags in the driver.
    405   1.1   xtraeme  */
    406   1.1   xtraeme void
    407   1.1   xtraeme sme_event_drvadd(void *arg)
    408   1.1   xtraeme {
    409   1.1   xtraeme 	sme_event_drv_t *sed_t = arg;
    410   1.2   xtraeme 	int error = 0;
    411   1.1   xtraeme 
    412   1.1   xtraeme 	KASSERT(sed_t != NULL);
    413   1.1   xtraeme 
    414   1.1   xtraeme #define SEE_REGEVENT(a, b, c)						\
    415   1.1   xtraeme do {									\
    416  1.45   xtraeme 	if (sed_t->sed_edata->flags & (a)) {				\
    417  1.36   xtraeme 		char str[ENVSYS_DESCLEN] = "monitoring-state-";		\
    418   1.1   xtraeme 									\
    419  1.45   xtraeme 		error = sme_event_register(sed_t->sed_sdict,		\
    420  1.45   xtraeme 				      sed_t->sed_edata,			\
    421  1.45   xtraeme 				      sed_t->sed_sme,			\
    422   1.2   xtraeme 				      NULL,				\
    423   1.2   xtraeme 				      0,				\
    424   1.2   xtraeme 				      (b),				\
    425  1.45   xtraeme 				      sed_t->sed_powertype);		\
    426   1.2   xtraeme 		if (error && error != EEXIST)				\
    427   1.2   xtraeme 			printf("%s: failed to add event! "		\
    428   1.2   xtraeme 			    "error=%d sensor=%s event=%s\n",		\
    429  1.45   xtraeme 			    __func__, error,				\
    430  1.45   xtraeme 			    sed_t->sed_edata->desc, (c));		\
    431   1.2   xtraeme 		else {							\
    432   1.2   xtraeme 			(void)strlcat(str, (c), sizeof(str));		\
    433  1.45   xtraeme 			prop_dictionary_set_bool(sed_t->sed_sdict,	\
    434   1.2   xtraeme 						 str,			\
    435   1.2   xtraeme 						 true);			\
    436   1.2   xtraeme 		}							\
    437   1.1   xtraeme 	}								\
    438   1.1   xtraeme } while (/* CONSTCOND */ 0)
    439   1.1   xtraeme 
    440   1.1   xtraeme 	SEE_REGEVENT(ENVSYS_FMONCRITICAL,
    441   1.1   xtraeme 		     PENVSYS_EVENT_CRITICAL,
    442   1.1   xtraeme 		     "critical");
    443   1.1   xtraeme 
    444  1.56  pgoyette 	SEE_REGEVENT(ENVSYS_FMONCRITUNDER | ENVSYS_FMONCRITOVER |
    445  1.56  pgoyette 		     ENVSYS_FMONWARNUNDER | ENVSYS_FMONWARNOVER,
    446  1.56  pgoyette 		     PENVSYS_EVENT_HW_LIMITS,
    447  1.56  pgoyette 		     "hw-range-limits");
    448   1.1   xtraeme 
    449  1.28   xtraeme 	SEE_REGEVENT(ENVSYS_FMONSTCHANGED,
    450  1.28   xtraeme 		     PENVSYS_EVENT_STATE_CHANGED,
    451  1.28   xtraeme 		     "state-changed");
    452   1.1   xtraeme 
    453  1.45   xtraeme 	/*
    454  1.45   xtraeme 	 * we are done, free memory now.
    455  1.45   xtraeme 	 */
    456   1.1   xtraeme 	kmem_free(sed_t, sizeof(*sed_t));
    457   1.1   xtraeme }
    458   1.1   xtraeme 
    459   1.1   xtraeme /*
    460   1.1   xtraeme  * sme_events_init:
    461   1.1   xtraeme  *
    462  1.45   xtraeme  * 	+ Initialize the events framework for this device.
    463   1.1   xtraeme  */
    464   1.1   xtraeme int
    465  1.45   xtraeme sme_events_init(struct sysmon_envsys *sme)
    466   1.1   xtraeme {
    467  1.51   xtraeme 	int error = 0;
    468  1.45   xtraeme 	uint64_t timo;
    469   1.1   xtraeme 
    470  1.45   xtraeme 	KASSERT(sme != NULL);
    471  1.51   xtraeme 	KASSERT(mutex_owned(&sme->sme_mtx));
    472  1.22   xtraeme 
    473  1.45   xtraeme 	if (sme->sme_events_timeout)
    474  1.45   xtraeme 		timo = sme->sme_events_timeout * hz;
    475  1.45   xtraeme 	else
    476  1.45   xtraeme 		timo = SME_EVTIMO;
    477  1.45   xtraeme 
    478  1.45   xtraeme 	error = workqueue_create(&sme->sme_wq, sme->sme_name,
    479  1.45   xtraeme 	    sme_events_worker, sme, PRI_NONE, IPL_SOFTCLOCK, WQ_MPSAFE);
    480   1.1   xtraeme 	if (error)
    481  1.51   xtraeme 		return error;
    482   1.1   xtraeme 
    483  1.51   xtraeme 	mutex_init(&sme->sme_callout_mtx, MUTEX_DEFAULT, IPL_SOFTCLOCK);
    484  1.54   xtraeme 	callout_init(&sme->sme_callout, CALLOUT_MPSAFE);
    485  1.45   xtraeme 	callout_setfunc(&sme->sme_callout, sme_events_check, sme);
    486  1.45   xtraeme 	callout_schedule(&sme->sme_callout, timo);
    487  1.45   xtraeme 	sme->sme_flags |= SME_CALLOUT_INITIALIZED;
    488  1.45   xtraeme 	DPRINTF(("%s: events framework initialized for '%s'\n",
    489  1.45   xtraeme 	    __func__, sme->sme_name));
    490   1.1   xtraeme 
    491   1.1   xtraeme 	return error;
    492   1.1   xtraeme }
    493   1.1   xtraeme 
    494   1.1   xtraeme /*
    495  1.18   xtraeme  * sme_events_destroy:
    496  1.18   xtraeme  *
    497  1.51   xtraeme  * 	+ Destroys the event framework for this device: callout
    498  1.51   xtraeme  * 	  stopped, workqueue destroyed and callout mutex destroyed.
    499  1.18   xtraeme  */
    500  1.18   xtraeme void
    501  1.45   xtraeme sme_events_destroy(struct sysmon_envsys *sme)
    502  1.18   xtraeme {
    503  1.51   xtraeme 	KASSERT(mutex_owned(&sme->sme_mtx));
    504  1.22   xtraeme 
    505  1.45   xtraeme 	callout_stop(&sme->sme_callout);
    506  1.54   xtraeme 	workqueue_destroy(sme->sme_wq);
    507  1.54   xtraeme 	mutex_destroy(&sme->sme_callout_mtx);
    508  1.54   xtraeme 	callout_destroy(&sme->sme_callout);
    509  1.45   xtraeme 	sme->sme_flags &= ~SME_CALLOUT_INITIALIZED;
    510  1.45   xtraeme 	DPRINTF(("%s: events framework destroyed for '%s'\n",
    511  1.45   xtraeme 	    __func__, sme->sme_name));
    512  1.18   xtraeme }
    513  1.18   xtraeme 
    514  1.18   xtraeme /*
    515   1.1   xtraeme  * sme_events_check:
    516   1.1   xtraeme  *
    517  1.51   xtraeme  * 	+ Passes the events to the workqueue thread and stops
    518  1.51   xtraeme  * 	  the callout if the 'low-power' condition is triggered.
    519   1.1   xtraeme  */
    520   1.1   xtraeme void
    521   1.1   xtraeme sme_events_check(void *arg)
    522   1.1   xtraeme {
    523  1.45   xtraeme 	struct sysmon_envsys *sme = arg;
    524   1.1   xtraeme 	sme_event_t *see;
    525  1.45   xtraeme 	uint64_t timo;
    526  1.45   xtraeme 
    527  1.45   xtraeme 	KASSERT(sme != NULL);
    528  1.45   xtraeme 
    529  1.51   xtraeme 	mutex_enter(&sme->sme_callout_mtx);
    530  1.51   xtraeme 	LIST_FOREACH(see, &sme->sme_events_list, see_list) {
    531  1.45   xtraeme 		workqueue_enqueue(sme->sme_wq, &see->see_wk, NULL);
    532  1.56  pgoyette 		see->see_edata->flags |= ENVSYS_FNEED_REFRESH;
    533  1.51   xtraeme 	}
    534  1.45   xtraeme 	if (sme->sme_events_timeout)
    535  1.45   xtraeme 		timo = sme->sme_events_timeout * hz;
    536  1.45   xtraeme 	else
    537  1.45   xtraeme 		timo = SME_EVTIMO;
    538  1.38   xtraeme 	if (!sysmon_low_power)
    539  1.45   xtraeme 		callout_schedule(&sme->sme_callout, timo);
    540  1.51   xtraeme 	mutex_exit(&sme->sme_callout_mtx);
    541   1.1   xtraeme }
    542   1.1   xtraeme 
    543   1.1   xtraeme /*
    544   1.1   xtraeme  * sme_events_worker:
    545   1.1   xtraeme  *
    546   1.1   xtraeme  * 	+ workqueue thread that checks if there's a critical condition
    547  1.51   xtraeme  * 	  and sends an event if it was triggered.
    548   1.1   xtraeme  */
    549   1.1   xtraeme void
    550   1.1   xtraeme sme_events_worker(struct work *wk, void *arg)
    551   1.1   xtraeme {
    552  1.28   xtraeme 	const struct sme_description_table *sdt = NULL;
    553  1.10   xtraeme 	const struct sme_sensor_event *sse = sme_sensor_event;
    554   1.1   xtraeme 	sme_event_t *see = (void *)wk;
    555  1.51   xtraeme 	struct sysmon_envsys *sme = see->see_sme;
    556  1.51   xtraeme 	envsys_data_t *edata = see->see_edata;
    557  1.51   xtraeme 	int i, state = 0;
    558   1.1   xtraeme 
    559   1.1   xtraeme 	KASSERT(wk == &see->see_wk);
    560  1.51   xtraeme 	KASSERT(sme != NULL || edata != NULL);
    561   1.1   xtraeme 
    562  1.51   xtraeme 	mutex_enter(&sme->sme_mtx);
    563  1.56  pgoyette 	if ((see->see_flags & SEE_EVENT_WORKING) == 0)
    564  1.56  pgoyette 		see->see_flags |= SEE_EVENT_WORKING;
    565   1.1   xtraeme 	/*
    566  1.56  pgoyette 	 * sme_events_check marks the first event for the device to
    567  1.56  pgoyette 	 * mak us refresh it here.  Don't refresh if the driver uses
    568  1.56  pgoyette 	 * its own method for refreshing.
    569   1.1   xtraeme 	 */
    570  1.45   xtraeme 	if ((sme->sme_flags & SME_DISABLE_REFRESH) == 0) {
    571  1.56  pgoyette 		if ((see->see_edata->flags & ENVSYS_FNEED_REFRESH) != 0) {
    572  1.51   xtraeme 			/* refresh sensor in device */
    573  1.51   xtraeme 			(*sme->sme_refresh)(sme, edata);
    574  1.56  pgoyette 			see->see_edata->flags &= ~ENVSYS_FNEED_REFRESH;
    575  1.42   xtraeme 		}
    576   1.1   xtraeme 	}
    577   1.1   xtraeme 
    578  1.56  pgoyette 	DPRINTFOBJ(("%s: (%s) desc=%s sensor=%d type=%d state=%d units=%d "
    579  1.51   xtraeme 	    "value_cur=%d\n", __func__, sme->sme_name, edata->desc,
    580  1.56  pgoyette 	    edata->sensor, see->see_type, edata->state, edata->units,
    581  1.56  pgoyette 	    edata->value_cur));
    582   1.1   xtraeme 
    583  1.50   xtraeme 	/* skip the event if current sensor is in invalid state */
    584  1.51   xtraeme 	if (edata->state == ENVSYS_SINVALID)
    585  1.50   xtraeme 		goto out;
    586  1.50   xtraeme 
    587  1.45   xtraeme 	switch (see->see_type) {
    588  1.10   xtraeme 	/*
    589  1.56  pgoyette 	 * For user range limits, calculate a new state first
    590  1.56  pgoyette 	 * State based on user limits will override any hardware
    591  1.56  pgoyette 	 * detected state.
    592  1.56  pgoyette 	 */
    593  1.56  pgoyette 	case PENVSYS_EVENT_USER_LIMITS:
    594  1.56  pgoyette 	case PENVSYS_EVENT_BATT_USER_LIMITS:
    595  1.56  pgoyette #define __EXCEEDED_LIMIT(lim, rel) ((lim) && edata->value_cur rel (lim))
    596  1.56  pgoyette 		if __EXCEEDED_LIMIT(see->see_critmin, <)
    597  1.56  pgoyette 			edata->state = ENVSYS_SCRITUNDER;
    598  1.56  pgoyette 		else if __EXCEEDED_LIMIT(see->see_warnmin, <)
    599  1.56  pgoyette 			edata->state = ENVSYS_SWARNUNDER;
    600  1.56  pgoyette 		else if __EXCEEDED_LIMIT(see->see_warnmax, >)
    601  1.56  pgoyette 			edata->state = ENVSYS_SWARNOVER;
    602  1.56  pgoyette 		else if __EXCEEDED_LIMIT(see->see_critmax, >)
    603  1.56  pgoyette 			edata->state = ENVSYS_SCRITOVER;
    604  1.56  pgoyette 		/* FALLTHROUGH */
    605  1.56  pgoyette #undef __EXCEED_LIMIT
    606  1.56  pgoyette 	/*
    607  1.56  pgoyette 	 * For hardware and user range limits, send event if state has changed
    608  1.10   xtraeme 	 */
    609   1.1   xtraeme 	case PENVSYS_EVENT_CRITICAL:
    610  1.56  pgoyette 	case PENVSYS_EVENT_HW_LIMITS:
    611  1.56  pgoyette 		if (edata->state != see->see_evsent) {
    612  1.56  pgoyette 			for (i = 0; sse[i].state != -1; i++)
    613  1.56  pgoyette 				if (sse[i].state == edata->state)
    614  1.56  pgoyette 					break;
    615  1.56  pgoyette 
    616  1.56  pgoyette 			if (sse[i].state == -1)
    617  1.10   xtraeme 				break;
    618   1.1   xtraeme 
    619  1.56  pgoyette 			if (edata->state == ENVSYS_SVALID)
    620  1.56  pgoyette 				sysmon_penvsys_event(&see->see_pes,
    621  1.56  pgoyette 						     PENVSYS_EVENT_NORMAL);
    622  1.56  pgoyette 			else
    623  1.56  pgoyette 				sysmon_penvsys_event(&see->see_pes,
    624  1.56  pgoyette 						     sse[i].event);
    625   1.1   xtraeme 
    626  1.56  pgoyette 			see->see_evsent = edata->state;
    627  1.56  pgoyette 		}
    628   1.1   xtraeme 		break;
    629   1.1   xtraeme 
    630  1.10   xtraeme 	/*
    631  1.28   xtraeme 	 * if value_cur is not normal (battery) or online (drive),
    632  1.28   xtraeme 	 * send the event...
    633  1.10   xtraeme 	 */
    634  1.28   xtraeme 	case PENVSYS_EVENT_STATE_CHANGED:
    635  1.45   xtraeme 		/*
    636  1.45   xtraeme 		 * the state has not been changed, just ignore the event.
    637  1.45   xtraeme 		 */
    638  1.51   xtraeme 		if (edata->value_cur == see->see_evsent)
    639   1.1   xtraeme 			break;
    640   1.1   xtraeme 
    641  1.51   xtraeme 		switch (edata->units) {
    642  1.28   xtraeme 		case ENVSYS_DRIVE:
    643  1.28   xtraeme 			sdt = sme_get_description_table(SME_DESC_DRIVE_STATES);
    644  1.28   xtraeme 			state = ENVSYS_DRIVE_ONLINE;
    645  1.28   xtraeme 			break;
    646  1.44   xtraeme 		case ENVSYS_BATTERY_CAPACITY:
    647  1.51   xtraeme 			sdt = sme_get_description_table(
    648  1.51   xtraeme 			    SME_DESC_BATTERY_CAPACITY);
    649  1.44   xtraeme 			state = ENVSYS_BATTERY_CAPACITY_NORMAL;
    650  1.28   xtraeme 			break;
    651  1.34   xtraeme 		default:
    652  1.35   xtraeme 			panic("%s: invalid units for ENVSYS_FMONSTCHANGED",
    653  1.35   xtraeme 			    __func__);
    654  1.28   xtraeme 		}
    655  1.28   xtraeme 
    656  1.28   xtraeme 		for (i = 0; sdt[i].type != -1; i++)
    657  1.51   xtraeme 			if (sdt[i].type == edata->value_cur)
    658   1.1   xtraeme 				break;
    659   1.1   xtraeme 
    660  1.51   xtraeme 		if (sdt[i].type == -1)
    661  1.51   xtraeme 			break;
    662  1.51   xtraeme 
    663  1.45   xtraeme 		/*
    664  1.45   xtraeme 		 * copy current state description.
    665  1.45   xtraeme 		 */
    666  1.45   xtraeme 		(void)strlcpy(see->see_pes.pes_statedesc, sdt[i].desc,
    667  1.45   xtraeme 		    sizeof(see->see_pes.pes_statedesc));
    668   1.1   xtraeme 
    669  1.45   xtraeme 		/*
    670  1.45   xtraeme 		 * state is ok again... send a normal event.
    671  1.45   xtraeme 		 */
    672  1.56  pgoyette 		if (see->see_evsent && edata->value_cur == state) {
    673  1.56  pgoyette 			sysmon_penvsys_event(&see->see_pes,
    674  1.56  pgoyette 					     PENVSYS_EVENT_NORMAL);
    675  1.56  pgoyette 			see->see_evsent = false;
    676  1.56  pgoyette 		}
    677   1.1   xtraeme 
    678  1.45   xtraeme 		/*
    679  1.45   xtraeme 		 * state has been changed... send event.
    680  1.45   xtraeme 		 */
    681  1.51   xtraeme 		if (see->see_evsent || edata->value_cur != state) {
    682  1.45   xtraeme 			/*
    683  1.45   xtraeme 			 * save current drive state.
    684  1.45   xtraeme 			 */
    685  1.51   xtraeme 			see->see_evsent = edata->value_cur;
    686  1.45   xtraeme 			sysmon_penvsys_event(&see->see_pes, see->see_type);
    687   1.1   xtraeme 		}
    688   1.1   xtraeme 
    689  1.49   xtraeme 		/*
    690  1.49   xtraeme 		 * There's no need to continue if it's a drive sensor.
    691  1.49   xtraeme 		 */
    692  1.51   xtraeme 		if (edata->units == ENVSYS_DRIVE)
    693  1.49   xtraeme 			break;
    694  1.49   xtraeme 
    695  1.39   xtraeme 		/*
    696  1.39   xtraeme 		 * Check if the system is running in low power and send the
    697  1.39   xtraeme 		 * event to powerd (if running) or shutdown the system
    698  1.39   xtraeme 		 * otherwise.
    699  1.39   xtraeme 		 */
    700  1.39   xtraeme 		if (!sysmon_low_power && sme_event_check_low_power()) {
    701  1.39   xtraeme 			struct penvsys_state pes;
    702  1.39   xtraeme 
    703  1.45   xtraeme 			/*
    704  1.45   xtraeme 			 * Stop the callout and send the 'low-power' event.
    705  1.45   xtraeme 			 */
    706  1.45   xtraeme 			sysmon_low_power = true;
    707  1.45   xtraeme 			callout_stop(&sme->sme_callout);
    708  1.39   xtraeme 			pes.pes_type = PENVSYS_TYPE_BATTERY;
    709  1.39   xtraeme 			sysmon_penvsys_event(&pes, PENVSYS_EVENT_LOW_POWER);
    710  1.39   xtraeme 		}
    711   1.1   xtraeme 		break;
    712  1.56  pgoyette 	default:
    713  1.56  pgoyette 		panic("%s: invalid event type %d", __func__, see->see_type);
    714   1.1   xtraeme 	}
    715  1.45   xtraeme 
    716  1.50   xtraeme out:
    717  1.56  pgoyette 	see->see_flags &= ~SEE_EVENT_WORKING;
    718  1.51   xtraeme 	cv_broadcast(&sme->sme_condvar);
    719  1.51   xtraeme 	mutex_exit(&sme->sme_mtx);
    720   1.1   xtraeme }
    721  1.38   xtraeme 
    722  1.47   xtraeme /*
    723  1.51   xtraeme  * Returns true if the system is in low power state: an AC adapter
    724  1.51   xtraeme  * is OFF and all batteries are in LOW/CRITICAL state.
    725  1.47   xtraeme  */
    726  1.44   xtraeme static bool
    727  1.38   xtraeme sme_event_check_low_power(void)
    728  1.38   xtraeme {
    729  1.47   xtraeme 	if (!sme_acadapter_check())
    730  1.47   xtraeme 		return false;
    731  1.47   xtraeme 
    732  1.47   xtraeme 	return sme_battery_check();
    733  1.47   xtraeme }
    734  1.47   xtraeme 
    735  1.51   xtraeme /*
    736  1.51   xtraeme  * Called with the sysmon_envsys device mtx held through the
    737  1.51   xtraeme  * workqueue thread.
    738  1.51   xtraeme  */
    739  1.47   xtraeme static bool
    740  1.47   xtraeme sme_acadapter_check(void)
    741  1.47   xtraeme {
    742  1.38   xtraeme 	struct sysmon_envsys *sme;
    743  1.38   xtraeme 	envsys_data_t *edata;
    744  1.50   xtraeme 	bool dev = false, sensor = false;
    745  1.38   xtraeme 
    746  1.50   xtraeme 	LIST_FOREACH(sme, &sysmon_envsys_list, sme_list) {
    747  1.50   xtraeme 		if (sme->sme_class == SME_CLASS_ACADAPTER) {
    748  1.50   xtraeme 			dev = true;
    749  1.38   xtraeme 			break;
    750  1.50   xtraeme 		}
    751  1.50   xtraeme 	}
    752  1.51   xtraeme 
    753  1.38   xtraeme 	/*
    754  1.47   xtraeme 	 * No AC Adapter devices were found.
    755  1.38   xtraeme 	 */
    756  1.50   xtraeme 	if (!dev)
    757  1.44   xtraeme 		return false;
    758  1.51   xtraeme 
    759  1.44   xtraeme 	/*
    760  1.47   xtraeme 	 * Check if there's an AC adapter device connected.
    761  1.44   xtraeme 	 */
    762  1.45   xtraeme 	TAILQ_FOREACH(edata, &sme->sme_sensors_list, sensors_head) {
    763  1.38   xtraeme 		if (edata->units == ENVSYS_INDICATOR) {
    764  1.47   xtraeme 			sensor = true;
    765  1.50   xtraeme 			/* refresh current sensor */
    766  1.50   xtraeme 			(*sme->sme_refresh)(sme, edata);
    767  1.44   xtraeme 			if (edata->value_cur)
    768  1.44   xtraeme 				return false;
    769  1.38   xtraeme 		}
    770  1.38   xtraeme 	}
    771  1.51   xtraeme 
    772  1.47   xtraeme 	if (!sensor)
    773  1.47   xtraeme 		return false;
    774  1.47   xtraeme 
    775  1.51   xtraeme 	/*
    776  1.51   xtraeme 	 * AC adapter found and not connected.
    777  1.51   xtraeme 	 */
    778  1.47   xtraeme 	return true;
    779  1.47   xtraeme }
    780  1.47   xtraeme 
    781  1.51   xtraeme /*
    782  1.51   xtraeme  * Called with the sysmon_envsys device mtx held through the
    783  1.51   xtraeme  * workqueue thread.
    784  1.51   xtraeme  */
    785  1.47   xtraeme static bool
    786  1.47   xtraeme sme_battery_check(void)
    787  1.47   xtraeme {
    788  1.47   xtraeme 	struct sysmon_envsys *sme;
    789  1.47   xtraeme 	envsys_data_t *edata;
    790  1.55  drochner 	int batteriesfound = 0;
    791  1.55  drochner 	bool present, batterycap, batterycharge;
    792  1.44   xtraeme 
    793  1.38   xtraeme 	/*
    794  1.44   xtraeme 	 * Check for battery devices and its state.
    795  1.38   xtraeme 	 */
    796  1.44   xtraeme 	LIST_FOREACH(sme, &sysmon_envsys_list, sme_list) {
    797  1.44   xtraeme 		if (sme->sme_class != SME_CLASS_BATTERY)
    798  1.44   xtraeme 			continue;
    799  1.38   xtraeme 
    800  1.55  drochner 		present = true;
    801  1.55  drochner 		TAILQ_FOREACH(edata, &sme->sme_sensors_list, sensors_head) {
    802  1.55  drochner 			if (edata->units == ENVSYS_INDICATOR &&
    803  1.55  drochner 			    !edata->value_cur) {
    804  1.55  drochner 				present = false;
    805  1.55  drochner 				break;
    806  1.55  drochner 			}
    807  1.55  drochner 		}
    808  1.55  drochner 		if (!present)
    809  1.55  drochner 			continue;
    810  1.44   xtraeme 		/*
    811  1.44   xtraeme 		 * We've found a battery device...
    812  1.44   xtraeme 		 */
    813  1.55  drochner 		batteriesfound++;
    814  1.55  drochner 		batterycap = batterycharge = false;
    815  1.45   xtraeme 		TAILQ_FOREACH(edata, &sme->sme_sensors_list, sensors_head) {
    816  1.44   xtraeme 			if (edata->units == ENVSYS_BATTERY_CAPACITY) {
    817  1.44   xtraeme 				batterycap = true;
    818  1.44   xtraeme 				if (!sme_battery_critical(edata))
    819  1.44   xtraeme 					return false;
    820  1.44   xtraeme 			} else if (edata->units == ENVSYS_BATTERY_CHARGE) {
    821  1.44   xtraeme 				batterycharge = true;
    822  1.44   xtraeme 				if (edata->value_cur)
    823  1.44   xtraeme 					return false;
    824  1.38   xtraeme 			}
    825  1.38   xtraeme 		}
    826  1.55  drochner 		if (!batterycap || !batterycharge)
    827  1.55  drochner 			return false;
    828  1.38   xtraeme 	}
    829  1.51   xtraeme 
    830  1.55  drochner 	if (!batteriesfound)
    831  1.44   xtraeme 		return false;
    832  1.38   xtraeme 
    833  1.38   xtraeme 	/*
    834  1.44   xtraeme 	 * All batteries in low/critical capacity and discharging.
    835  1.38   xtraeme 	 */
    836  1.44   xtraeme 	return true;
    837  1.44   xtraeme }
    838  1.38   xtraeme 
    839  1.44   xtraeme static bool
    840  1.44   xtraeme sme_battery_critical(envsys_data_t *edata)
    841  1.44   xtraeme {
    842  1.44   xtraeme 	if (edata->value_cur == ENVSYS_BATTERY_CAPACITY_CRITICAL ||
    843  1.44   xtraeme 	    edata->value_cur == ENVSYS_BATTERY_CAPACITY_LOW)
    844  1.44   xtraeme 		return true;
    845  1.44   xtraeme 
    846  1.44   xtraeme 	return false;
    847  1.38   xtraeme }
    848