The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/sensors.h

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    1 /* $OpenBSD: sensors.h,v 1.23 2007/03/22 16:55:31 deraadt Exp $ */
    2 /* $DragonFly: src/sys/sys/sensors.h,v 1.1 2007/10/02 12:57:01 hasso Exp $ */
    3 
    4 /*
    5  * Copyright (c) 2003, 2004 Alexander Yurchenko <grange@openbsd.org>
    6  * Copyright (c) 2006 Constantine A. Murenin <cnst+openbsd@bugmail.mojo.ru>
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   28  */
   29 
   30 #ifndef _SYS_SENSORS_H_
   31 #define _SYS_SENSORS_H_
   32 
   33 #define SENSORS_DEBUG
   34 
   35 /* Sensor types */
   36 enum sensor_type {
   37         SENSOR_TEMP,                    /* temperature (muK) */
   38         SENSOR_FANRPM,                  /* fan revolution speed */
   39         SENSOR_VOLTS_DC,                /* voltage (muV DC) */
   40         SENSOR_VOLTS_AC,                /* voltage (muV AC) */
   41         SENSOR_OHMS,                    /* resistance */
   42         SENSOR_WATTS,                   /* power */
   43         SENSOR_AMPS,                    /* current (muA) */
   44         SENSOR_WATTHOUR,                /* power capacity */
   45         SENSOR_AMPHOUR,                 /* power capacity */
   46         SENSOR_INDICATOR,               /* boolean indicator */
   47         SENSOR_INTEGER,                 /* generic integer value */
   48         SENSOR_PERCENT,                 /* percent */
   49         SENSOR_LUX,                     /* illuminance (mulx) */
   50         SENSOR_DRIVE,                   /* disk */
   51         SENSOR_TIMEDELTA,               /* system time error (nSec) */
   52         SENSOR_MAX_TYPES
   53 };
   54 
   55 static const char * const sensor_type_s[SENSOR_MAX_TYPES + 1] = {
   56         "temp",
   57         "fan",
   58         "volt",
   59         "acvolt",
   60         "resistance",
   61         "power",
   62         "current",
   63         "watthour",
   64         "amphour",
   65         "indicator",
   66         "raw",
   67         "percent",
   68         "illuminance",
   69         "drive",
   70         "timedelta",
   71         "undefined"
   72 };
   73 
   74 #define SENSOR_DRIVE_EMPTY      1
   75 #define SENSOR_DRIVE_READY      2
   76 #define SENSOR_DRIVE_POWERUP    3
   77 #define SENSOR_DRIVE_ONLINE     4
   78 #define SENSOR_DRIVE_IDLE       5
   79 #define SENSOR_DRIVE_ACTIVE     6
   80 #define SENSOR_DRIVE_REBUILD    7
   81 #define SENSOR_DRIVE_POWERDOWN  8
   82 #define SENSOR_DRIVE_FAIL       9
   83 #define SENSOR_DRIVE_PFAIL      10
   84 
   85 /* Sensor states */
   86 enum sensor_status {
   87         SENSOR_S_UNSPEC,                /* status is unspecified */
   88         SENSOR_S_OK,                    /* status is ok */
   89         SENSOR_S_WARN,                  /* status is warning */
   90         SENSOR_S_CRIT,                  /* status is critical */
   91         SENSOR_S_UNKNOWN                /* status is unknown */
   92 };
   93 
   94 /* Sensor data:
   95  * New fields should be added at the end to encourage backwards compat
   96  */
   97 struct sensor {
   98         char desc[32];                  /* sensor description, may be empty */
   99         struct timeval tv;              /* sensor value last change time */
  100         int64_t value;                  /* current value */
  101         enum sensor_type type;          /* sensor type */
  102         enum sensor_status status;      /* sensor status */
  103         int numt;                       /* sensor number of .type type */
  104         int flags;                      /* sensor flags */
  105 #define SENSOR_FINVALID         0x0001  /* sensor is invalid */
  106 #define SENSOR_FUNKNOWN         0x0002  /* sensor value is unknown */
  107 };
  108 
  109 /* Sensor device data:
  110  * New fields should be added at the end to encourage backwards compat
  111  */
  112 struct sensordev {
  113         int num;                        /* sensordev number */
  114         char xname[16];                 /* unix device name */
  115         int maxnumt[SENSOR_MAX_TYPES];
  116         int sensors_count;
  117 };
  118 
  119 #define MAXSENSORDEVICES 32
  120 
  121 #ifdef _KERNEL
  122 #include <sys/queue.h>
  123 #ifndef NOSYSCTL8HACK
  124  #include <sys/sysctl.h>
  125 #endif
  126 
  127 /* Sensor data */
  128 struct ksensor {
  129         SLIST_ENTRY(ksensor) list;      /* device-scope list */
  130         char desc[32];                  /* sensor description, may be empty */
  131         struct timeval tv;              /* sensor value last change time */
  132         int64_t value;                  /* current value */
  133         enum sensor_type type;          /* sensor type */
  134         enum sensor_status status;      /* sensor status */
  135         int numt;                       /* sensor number of .type type */
  136         int flags;                      /* sensor flags, ie. SENSOR_FINVALID */
  137 };
  138 SLIST_HEAD(ksensors_head, ksensor);
  139 
  140 /* Sensor device data */
  141 struct ksensordev {
  142         SLIST_ENTRY(ksensordev) list;
  143         int num;                        /* sensordev number */
  144         char xname[16];                 /* unix device name */
  145         int maxnumt[SENSOR_MAX_TYPES];
  146         int sensors_count;
  147         struct ksensors_head sensors_list;
  148 #ifndef NOSYSCTL8HACK
  149         struct sysctl_ctx_list clist;   /* XXX: sysctl(9) .oid_handler() for
  150                                          * CTLTYPE_NODE type doesn't support
  151                                          * the undocumented sysctl magic.
  152                                          */
  153 #endif /* !NOSYSCTL8HACK */
  154 };
  155 
  156 /* struct ksensordev */
  157 void                     sensordev_install(struct ksensordev *);
  158 void                     sensordev_deinstall(struct ksensordev *);
  159 
  160 /* struct ksensor */
  161 void                     sensor_attach(struct ksensordev *, struct ksensor *);
  162 void                     sensor_detach(struct ksensordev *, struct ksensor *);
  163 
  164 /* task scheduling */
  165 int             sensor_task_register(void *, void (*)(void *), int);
  166 void            sensor_task_unregister(void *);
  167 
  168 #endif  /* _KERNEL */
  169 
  170 #endif  /* !_SYS_SENSORS_H_ */

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