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sysmonvar.h revision 1.26 
      1 /*	$NetBSD: sysmonvar.h,v 1.26 2008/04/04 10:10:20 hannken Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 Zembu Labs, Inc.
      5  * All rights reserved.
      6  *
      7  * Author: Jason R. Thorpe <thorpej (at) zembu.com>
      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  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed by Zembu Labs, Inc.
     20  * 4. Neither the name of Zembu Labs nor the names of its employees may
     21  *    be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY ZEMBU LABS, INC. ``AS IS'' AND ANY EXPRESS
     25  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAR-
     26  * RANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DIS-
     27  * CLAIMED.  IN NO EVENT SHALL ZEMBU LABS BE LIABLE FOR ANY DIRECT, INDIRECT,
     28  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     29  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     30  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     31  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     32  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     33  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     34  */
     35 
     36 #ifndef _DEV_SYSMON_SYSMONVAR_H_
     37 #define	_DEV_SYSMON_SYSMONVAR_H_
     38 
     39 #include <sys/param.h>
     40 #include <sys/envsys.h>
     41 #include <sys/wdog.h>
     42 #include <sys/power.h>
     43 #include <sys/queue.h>
     44 #include <sys/callout.h>
     45 #include <sys/mutex.h>
     46 #include <sys/condvar.h>
     47 
     48 struct lwp;
     49 struct proc;
     50 struct knote;
     51 struct uio;
     52 struct workqueue;
     53 
     54 #define	SYSMON_MINOR_ENVSYS	0
     55 #define	SYSMON_MINOR_WDOG	1
     56 #define	SYSMON_MINOR_POWER	2
     57 
     58 /*****************************************************************************
     59  * Environmental sensor support
     60  *****************************************************************************/
     61 
     62 struct sme_event;
     63 struct sme_sensor_names;
     64 
     65 struct sysmon_envsys {
     66 	const char *sme_name;		/* envsys device name */
     67 	u_int sme_nsensors;		/* sensors count, from driver */
     68 	u_int sme_fsensor;		/* sensor index base, from sysmon */
     69 #define SME_SENSOR_IDX(sme, idx) 	((idx) - (sme)->sme_fsensor)
     70 	int sme_class;			/* class of device */
     71 #define SME_CLASS_BATTERY	1		/* device is a battery */
     72 #define SME_CLASS_ACADAPTER	2		/* device is an AC adapter */
     73 	int sme_flags;			/* additional flags */
     74 #define SME_FLAG_BUSY 		0x00000001 	/* device busy */
     75 #define SME_DISABLE_REFRESH	0x00000002	/* disable sme_refresh */
     76 #define SME_CALLOUT_INITIALIZED	0x00000004	/* callout was initialized */
     77 #define SME_INIT_REFRESH        0x00000008      /* call sme_refresh() after
     78 						   interrupts are enabled in
     79 						   the autoconf(9) process. */
     80 
     81 	void *sme_cookie;		/* for ENVSYS back-end */
     82 
     83 	/*
     84 	 * Function callback to receive data from device.
     85 	 */
     86 	void (*sme_refresh)(struct sysmon_envsys *, envsys_data_t *);
     87 
     88 	struct workqueue *sme_wq;	/* the workqueue for the events */
     89 	struct callout sme_callout;	/* for the events */
     90 	uint64_t sme_events_timeout;	/* the timeout used in the callout */
     91 
     92 	/*
     93 	 * linked list for the sysmon envsys devices.
     94 	 */
     95 	LIST_ENTRY(sysmon_envsys) sme_list;
     96 
     97 	/*
     98 	 * linked list for the events that a device maintains.
     99 	 */
    100 	LIST_HEAD(, sme_event) sme_events_list;
    101 
    102 	/*
    103 	 * tailq for the sensors that a device maintains.
    104 	 */
    105 	TAILQ_HEAD(, envsys_data) sme_sensors_list;
    106 
    107 	/*
    108 	 * Locking/synchronization.
    109 	 */
    110 	kmutex_t sme_mtx;
    111 	kmutex_t sme_callout_mtx;
    112 	kcondvar_t sme_condvar;
    113 };
    114 
    115 int	sysmonopen_envsys(dev_t, int, int, struct lwp *);
    116 int	sysmonclose_envsys(dev_t, int, int, struct lwp *);
    117 int	sysmonioctl_envsys(dev_t, u_long, void *, int, struct lwp *);
    118 
    119 struct sysmon_envsys 	*sysmon_envsys_create(void);
    120 void 			sysmon_envsys_destroy(struct sysmon_envsys *);
    121 
    122 int	sysmon_envsys_register(struct sysmon_envsys *);
    123 void	sysmon_envsys_unregister(struct sysmon_envsys *);
    124 
    125 int	sysmon_envsys_sensor_attach(struct sysmon_envsys *, envsys_data_t *);
    126 int	sysmon_envsys_sensor_detach(struct sysmon_envsys *, envsys_data_t *);
    127 
    128 void	sysmon_envsys_init(void);
    129 
    130 /*****************************************************************************
    131  * Watchdog timer support
    132  *****************************************************************************/
    133 
    134 struct sysmon_wdog {
    135 	const char *smw_name;		/* watchdog device name */
    136 
    137 	LIST_ENTRY(sysmon_wdog) smw_list;
    138 
    139 	void *smw_cookie;		/* for watchdog back-end */
    140 	int (*smw_setmode)(struct sysmon_wdog *);
    141 	int (*smw_tickle)(struct sysmon_wdog *);
    142 	u_int smw_period;		/* timer period (in seconds) */
    143 	int smw_mode;			/* timer mode */
    144 	u_int smw_refcnt;		/* references */
    145 	pid_t smw_tickler;		/* last process to tickle */
    146 };
    147 
    148 int	sysmonopen_wdog(dev_t, int, int, struct lwp *);
    149 int	sysmonclose_wdog(dev_t, int, int, struct lwp *);
    150 int	sysmonioctl_wdog(dev_t, u_long, void *, int, struct lwp *);
    151 
    152 int     sysmon_wdog_register(struct sysmon_wdog *);
    153 int     sysmon_wdog_unregister(struct sysmon_wdog *);
    154 
    155 void	sysmon_wdog_init(void);
    156 
    157 /*****************************************************************************
    158  * Power management support
    159  *****************************************************************************/
    160 
    161 struct sysmon_pswitch {
    162 	const char *smpsw_name;		/* power switch name */
    163 	int smpsw_type;			/* power switch type */
    164 
    165 	LIST_ENTRY(sysmon_pswitch) smpsw_list;
    166 };
    167 
    168 int	sysmonopen_power(dev_t, int, int, struct lwp *);
    169 int	sysmonclose_power(dev_t, int, int, struct lwp *);
    170 int	sysmonread_power(dev_t, struct uio *, int);
    171 int	sysmonpoll_power(dev_t, int, struct lwp *);
    172 int	sysmonkqfilter_power(dev_t, struct knote *);
    173 int	sysmonioctl_power(dev_t, u_long, void *, int, struct lwp *);
    174 
    175 void	sysmon_power_settype(const char *);
    176 
    177 int	sysmon_pswitch_register(struct sysmon_pswitch *);
    178 void	sysmon_pswitch_unregister(struct sysmon_pswitch *);
    179 
    180 void	sysmon_pswitch_event(struct sysmon_pswitch *, int);
    181 void	sysmon_penvsys_event(struct penvsys_state *, int);
    182 
    183 void	sysmon_power_init(void);
    184 
    185 #endif /* _DEV_SYSMON_SYSMONVAR_H_ */
    186