/*	$NetBSD: apmvar.h,v 1.6 1997/10/15 01:21:20 jtk 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_APM_H__
#define __I386_APM_H__

/* Advanced Power Management (v1.0 and v1.1 specification)
 * functions/defines/etc.
 */
#define APM_BIOS_FNCODE	(0x53)
#define APM_SYSTEM_BIOS	(0x15)
#define APM_BIOS_FN(x)	((APM_BIOS_FNCODE<<8)|(x))

/*
 * APM info bits from BIOS
 */
#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_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_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_ALLUNITS	0xff

#define	APM_INSTALLATION_CHECK	0x00	/* int15 only */
#define		APM_INSTALL_SIGNATURE	0x504d	/* %bh = 'P', %bl = 'M' */
#define	APM_REALMODE_CONNECT	0x01	/* int15 only */
#define	APM_16BIT_CONNECT	0x02	/* int15 only */
#define	APM_32BIT_CONNECT	0x03	/* int15 only */
#define APM_DISCONNECT		0x04	/* %bx = APM_DEV_APM_BIOS */
#define APM_CPU_IDLE		0x05
#define APM_CPU_BUSY		0x06
#define APM_SET_PWR_STATE	0x07
#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

/* 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	0x08
#define		APM_MGT_ALL	0xffff	/* %bx */
#define		APM_MGT_DISABLE	0x0	/* %cx */
#define		APM_MGT_ENABLE	0x1

#define APM_SYSTEM_DEFAULTS	0x09
#define		APM_DEFAULTS_ALL	0xffff	/* %bx */

#define APM_POWER_STATUS	0x0a
#define		APM_AC_OFF		0x00
#define		APM_AC_ON		0x01
#define		APM_AC_BACKUP		0x02
#define		APM_AC_UNKNOWN		0xff
/* the first set of battery constants is 1.0 style values;
   the second set is 1.1 style bit definitions */
#define		APM_BATT_HIGH		0x00
#define		APM_BATT_LOW		0x01
#define		APM_BATT_CRITICAL	0x02
#define		APM_BATT_CHARGING	0x03
#define		APM_BATT_ABSENT		0x04 /* Software only--not in spec! */
#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	0x80

#define		APM_BATT_LIFE_UNKNOWN	0xff
#define		APM_BATT_STATE(regp) ((regp)->bx & 0xff)
#define		APM_BATT_FLAGS(regp) (((regp)->cx & 0xff00) >> 8)
#define		APM_AC_STATE(regp) (((regp)->bx & 0xff00) >> 8)
#define		APM_BATT_LIFE(regp) ((regp)->cx & 0xff) /* in % */
/* BATT_REMAINING returns minutes remaining */
#define		APM_BATT_REMAINING(regp) (((regp)->dx & 0x8000) ? \
					  ((regp)->dx & 0x7fff) : \
					  ((regp)->dx & 0x7fff)/60)
#define		APM_BATT_REM_VALID(regp) (((regp)->dx & 0xffff) != 0xffff)
#define	APM_GET_PM_EVENT	0x0b
#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_GET_POWER_STATE	0x0c
#define	APM_DEVICE_MGMT_ENABLE	0x0d

#define	APM_DRIVER_VERSION	0x0e
/* %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	0x0F
#define		APM_MGT_DISENGAGE	0x0	/* %cx */
#define		APM_MGT_ENGAGE		0x1

#define APM_OEM			0x80

/*
 * APM info word from the real-mode handler is adjusted to put
 * major/minor version in low half and support bits in upper half.
 */
#define	APM_MAJOR_VERS(info) (((info)&0xff00)>>8)
#define	APM_MINOR_VERS(info) ((info)&0xff)

#define APM_16BIT_SUPPORTED	(APM_16BIT_SUPPORT << 16)
#define APM_32BIT_SUPPORTED	(APM_32BIT_SUPPORT << 16)
#define APM_IDLE_SLOWS		(APM_CPUIDLE_SLOW << 16)
#define APM_BIOS_PM_DISABLED	(APM_DISABLED << 16)
#define APM_BIOS_PM_DISENGAGED	(APM_DISENGAGED << 16)

/*
 * virtual & physical address of the trampoline
 * that we use: page 1.
 */
#define APM_BIOSTRAMP	NBPG


#ifndef _LOCORE

/* filled in by apmcall */ 

struct apm_connect_info {
	u_int apm_code32_seg_base;	/* real-mode style segment selector */
	u_int apm_code16_seg_base;
	u_int apm_data_seg_base;
	u_int apm_entrypt;
	u_short	apm_segsel;		/* segment selector for APM */
	u_short _pad1;
	u_int apm_code32_seg_len;
	u_int apm_data_seg_len;
	u_int apm_detail;
};

struct apm_event_info {
	u_int type;
	u_int index;
	u_int spare[8];
};

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_NEXTEVENT _IOR('A', 4, struct apm_event_info) /* fetch event */
#define	APM_IOC_DEV_CTL	_IOW('A', 5, struct apm_ctl) /* put device into mode */

struct apm_attach_args {
	char *aaa_busname;
};

#ifdef _KERNEL
extern struct apm_connect_info apminfo;	/* in locore */
extern int apmpresent;
extern int apmcall __P((int function, struct bioscallregs *regs));
extern void bioscall __P((int function, struct bioscallregs *regs));
extern void apm_cpu_busy __P((void));
extern void apm_cpu_idle __P((void));
extern void apminit __P((void));
int apm_set_powstate __P((u_int devid, u_int powstate));
extern int apm_busprobe __P((void));
#endif /* _KERNEL */
#endif /* _LOCORE */
#endif /* __i386_apm_h__ */