/*	$OpenBSD: apmvar.h,v 1.16 2009/02/26 17:19:47 oga Exp $	*/

/*
 *  Copyright (c) 1995 John T. Kohl
 *  All rights reserved.
 * 
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 */
#ifndef _I386_APMVAR_H_
#define _I386_APMVAR_H_

#include <sys/ioccom.h>

/* Advanced Power Management (v1.0 and v1.1 specification)
 * functions/defines/etc.
 */

#define	APM_VERSION	0x0102

/*
 * APM info word from boot loader
 */
#define APM_16BIT_SUPPORTED	0x00010000
#define APM_32BIT_SUPPORTED	0x00020000
#define APM_IDLE_SLOWS		0x00040000
#define APM_BIOS_PM_DISABLED	0x00080000
#define APM_BIOS_PM_DISENGAGED	0x00100000
#define	APM_MAJOR(f)		(((f) >> 8) & 0xff)
#define	APM_MINOR(f)		((f) & 0xff)
#define	APM_VERMASK		0x0000ffff
#define	APM_NOCLI		0x00010000
#define	APM_BEBATT		0x00020000

/* APM error codes */
#define	APM_ERR_CODE(regs)	(((regs)->ax & 0xff00) >> 8)
#define	APM_ERR_PM_DISABLED	0x01
#define	APM_ERR_REALALREADY	0x02
#define	APM_ERR_NOTCONN		0x03
#define	APM_ERR_16ALREADY	0x05
#define	APM_ERR_16NOTSUPP	0x06
#define	APM_ERR_32ALREADY	0x07
#define	APM_ERR_32NOTSUPP	0x08
#define	APM_ERR_UNRECOG_DEV	0x09
#define	APM_ERR_ERANGE		0x0A
#define	APM_ERR_NOTENGAGED	0x0B
#define	APM_ERR_EOPNOSUPP	0x0C
#define	APM_ERR_RTIMER_DISABLED	0x0D
#define APM_ERR_UNABLE		0x60
#define APM_ERR_NOEVENTS	0x80
#define	APM_ERR_NOT_PRESENT	0x86

#define APM_DEV_APM_BIOS	0x0000
#define APM_DEV_ALLDEVS		0x0001
/* device classes are high byte; device IDs go in low byte */
#define		APM_DEV_DISPLAY(x)	(0x0100|((x)&0xff))
#define		APM_DEV_DISK(x)		(0x0200|((x)&0xff))
#define		APM_DEV_PARALLEL(x)	(0x0300|((x)&0xff))
#define		APM_DEV_SERIAL(x)	(0x0400|((x)&0xff))
#define		APM_DEV_NETWORK(x)	(0x0500|((x)&0xff))
#define		APM_DEV_PCMCIA(x)	(0x0600|((x)&0xff))
#define		APM_DEV_BATTERIES(x)	(0x8000|((x)&0xff))
#define		APM_DEV_ALLUNITS	0xff
/* 0x8100-0xDFFF - reserved	*/
/* 0xE000-0xEFFF - OEM-defined	*/
/* 0xF000-0xFFFF - reserved	*/

#define	APM_INSTCHECK		0x5300	/* int15 only */
#define		APM_16BIT_SUPPORT	0x01
#define		APM_32BIT_SUPPORT	0x02
#define		APM_CPUIDLE_SLOW	0x04
#define		APM_DISABLED		0x08
#define		APM_DISENGAGED		0x10

#define	APM_REAL_CONNECT	0x5301	/* int15 only */
#define	APM_PROT16_CONNECT	0x5302	/* int15 only */
#define	APM_PROT32_CONNECT	0x5303	/* int15 only */
#define APM_DISCONNECT		0x5304	/* %bx = APM_DEV_APM_BIOS */

#define APM_CPU_IDLE		0x5305
#define APM_CPU_BUSY		0x5306

#define APM_SET_PWR_STATE	0x5307
#define		APM_SYS_READY		0x0000	/* %cx */
#define		APM_SYS_STANDBY		0x0001
#define		APM_SYS_SUSPEND		0x0002
#define		APM_SYS_OFF		0x0003
#define		APM_LASTREQ_INPROG	0x0004
#define		APM_LASTREQ_REJECTED	0x0005
/* 0x0006 - 0x001f	Reserved system states    */
/* 0x0020 - 0x003f	OEM-defined system states */
/* 0x0040 - 0x007f	OEM-defined device states */
/* 0x0080 - 0xffff	Reserved device states    */

/* system standby is device ID (%bx) 0x0001, APM_SYS_STANDBY */
/* system suspend is device ID (%bx) 0x0001, APM_SYS_SUSPEND */

#define APM_PWR_MGT_ENABLE	0x5308
#define		APM_MGT_ALL	0xffff	/* %bx */
#define		APM_MGT_DISABLE	0x0	/* %cx */
#define		APM_MGT_ENABLE	0x1

#define APM_SYSTEM_DEFAULTS	0x5309
#define		APM_DEFAULTS_ALL	0xffff	/* %bx */

#define APM_POWER_STATUS	0x530a
#define		APM_AC_OFF		0x00
#define		APM_AC_ON		0x01
#define		APM_AC_BACKUP		0x02
#define		APM_AC_UNKNOWN		0xff
#define		APM_BATT_HIGH		0x00
#define		APM_BATT_LOW		0x01
#define		APM_BATT_CRITICAL	0x02
#define		APM_BATT_CHARGING	0x03
#define		APM_BATT_UNKNOWN	0xff
#define		APM_BATT_FLAG_HIGH	0x01
#define		APM_BATT_FLAG_LOW	0x02
#define		APM_BATT_FLAG_CRITICAL	0x04
#define		APM_BATT_FLAG_CHARGING	0x08
#define		APM_BATT_FLAG_NOBATTERY	0x10
#define		APM_BATT_FLAG_NOSYSBATT	0x80
#define		APM_BATT_LIFE_UNKNOWN	0xff
#define		BATT_STATE(regp) ((regp)->bx & 0xff)
#define		BATT_FLAGS(regp) (((regp)->cx & 0xff00) >> 8)
#define		AC_STATE(regp) (((regp)->bx & 0xff00) >> 8)
#define		BATT_LIFE(regp) ((regp)->cx & 0xff) /* in % */
/* Return time in minutes. According to the APM 1.2 spec:
	DX = Remaining battery life -- time units
		Bit 15 = 0	Time units are seconds
		       = 1 	Time units are minutes
		Bits 14-0 =	Number of seconds or minutes */
#define		BATT_REMAINING(regp) (((regp)->dx & 0x8000) ? \
				      ((regp)->dx & 0x7fff) : \
				      ((regp)->dx & 0x7fff)/60)
#define		BATT_REM_VALID(regp) (((regp)->dx & 0xffff) != 0xffff)
#define		BATT_COUNT(regp)	((regp)->si)

#define	APM_GET_PM_EVENT	0x530b
#define		APM_NOEVENT		0x0000
#define		APM_STANDBY_REQ		0x0001 /* %bx on return */
#define		APM_SUSPEND_REQ		0x0002
#define		APM_NORMAL_RESUME	0x0003
#define		APM_CRIT_RESUME		0x0004 /* suspend/resume happened
						  without us */
#define		APM_BATTERY_LOW		0x0005
#define		APM_POWER_CHANGE	0x0006
#define		APM_UPDATE_TIME		0x0007
#define		APM_CRIT_SUSPEND_REQ	0x0008
#define		APM_USER_STANDBY_REQ	0x0009
#define		APM_USER_SUSPEND_REQ	0x000A
#define		APM_SYS_STANDBY_RESUME	0x000B
#define		APM_CAPABILITY_CHANGE	0x000C	/* apm v1.2 */
/* 0x000d - 0x00ff	Reserved system events */
/* 0x0100 - 0x01ff	Reserved device events */
/* 0x0200 - 0x02ff	OEM-defined APM events */
/* 0x0300 - 0xffff	Reserved */
#define		APM_EVENT_MASK		0xffff

#define	APM_EVENT_COMPOSE(t,i)	((((i) & 0x7fff) << 16)|((t) & APM_EVENT_MASK))
#define	APM_EVENT_TYPE(e)	((e) & APM_EVENT_MASK)
#define	APM_EVENT_INDEX(e)	((e) >> 16)

#define	APM_GET_POWER_STATE	0x530c
#define	APM_DEVICE_MGMT_ENABLE	0x530d

#define	APM_DRIVER_VERSION	0x530e
/* %bx should be DEV value (APM_DEV_APM_BIOS)
   %ch = driver major vno
   %cl = driver minor vno
   return: %ah = conn major; %al = conn minor
   */
#define		APM_CONN_MINOR(regp) ((regp)->ax & 0xff)
#define		APM_CONN_MAJOR(regp) (((regp)->ax & 0xff00) >> 8)

#define APM_PWR_MGT_ENGAGE	0x530F
#define		APM_MGT_DISENGAGE	0x0	/* %cx */
#define		APM_MGT_ENGAGE		0x1

/* %bx - APM_DEV_APM_BIOS
 * %bl - number of batteries
 * %cx - capabilities
 */
#define	APM_GET_CAPABILITIES	0x5310
#define		APM_NBATTERIES(regp)	((regp)->bx)
#define		APM_GLOBAL_STANDBY	0x0001
#define		APM_GLOBAL_SUSPEND	0x0002
#define		APM_RTIMER_STANDBY	0x0004	/* resume time wakes up */
#define		APM_RTIMER_SUSPEND	0x0008
#define		APM_IRRING_STANDBY	0x0010	/* internal ring wakes up */
#define		APM_IRRING_SUSPEND	0x0020
#define		APM_PCCARD_STANDBY	0x0040	/* pccard wakes up */
#define		APM_PCCARD_SUSPEND	0x0080

/* %bx - APM_DEV_APM_BIOS
 * %cl - function
 *	for %cl=2 (set resume timer)
 * %ch - seconds in BCD
 * %dh - hours in BCD
 * %dl - minutes in BCD
 * %si - month in BCD (high), day in BCD (low)
 * %di - year in BCD
 */
#define	APM_RESUME_TIMER	0x5311
#define		APM_RT_DISABLE	0x0
#define		APM_RT_GET	0x1
#define		APM_RT_SET	0x2

/* %bx - APM_DEV_APM_BIOS
 * %cx - function
 */
#define	APM_RESUME_ON_RING	0x5312
#define		APM_ROR_DISABLE	0x0
#define		APM_ROR_ENABLE	0x1
#define		APM_ROR_STATUS	0x2

/* %bx - APM_EDV_APM_BIOS
 * %cx - function
 */
#define	APM_INACTIVITY_TIMER	0x5313
#define		APM_IT_DISABLE	0x0
#define		APM_IT_ENABLE	0x1
#define		APM_IT_STATUS	0x2

/* %bh - function */
#define APM_OEM			0x5380
#define		APM_OEM_INSTCHECK	0x7f	/* %bx - OEM ID */

/*
 * LP (Laptop Package)
 *
 * Copyright (C) 1994 by HOSOKAWA Tatsumi <hosokawa@mt.cs.keio.ac.jp>
 *
 * This software may be used, modified, copied, and distributed, in
 * both source and binary form provided that the above copyright and
 * these terms are retained. Under no circumstances is the author 
 * responsible for the proper functioning of this software, nor does 
 * the author assume any responsibility for damages incurred with its 
 * use.
 *
 * Sep., 1994	Implemented on FreeBSD 1.1.5.1R (Toshiba AVS001WD)
 */

#define APM_BATTERY_ABSENT 4

struct apm_power_info {
	u_char battery_state;
	u_char ac_state;
	u_char battery_life;
	u_char spare1;
	u_int minutes_left;		/* estimate */
	u_int spare2[6];
};

struct apm_ctl {
	u_int dev;
	u_int mode;
};

#define	APM_IOC_REJECT	_IOW('A', 0, struct apm_event_info) /* reject request # */
#define	APM_IOC_STANDBY	_IO('A', 1)	/* put system into standby */
#define	APM_IOC_SUSPEND	_IO('A', 2)	/* put system into suspend */
#define	APM_IOC_GETPOWER _IOR('A', 3, struct apm_power_info) /* fetch battery state */
#define	APM_IOC_DEV_CTL	_IOW('A', 5, struct apm_ctl) /* put device into mode */
#define APM_IOC_PRN_CTL _IOW('A', 6, int ) /* driver power status msg */
#define		APM_PRINT_ON	0	/* driver power status displayed */
#define		APM_PRINT_OFF	1	/* driver power status not displayed */
#define		APM_PRINT_PCT	2	/* driver power status only displayed
					   if the percentage changes */
#define	APM_IOC_STANDBY_REQ	_IO('A', 7)	/* request standby */
#define	APM_IOC_SUSPEND_REQ	_IO('A', 8)	/* request suspend */


#ifdef _KERNEL
extern void apm_cpu_busy(void);
extern void apm_cpu_idle(void);
extern void apminit(void);
int apm_set_powstate(u_int devid, u_int powstate);
int apm_kqfilter(dev_t dev, struct knote *kn);
#endif /* _KERNEL */

#endif /* _I386_APMVAR_H_ */
