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#ifndef _LINUX_APM_H

#define _LINUX_APM_H

/*

 * Include file for the interface to an APM BIOS

 * Copyright 1994-2001 Stephen Rothwell (sfr@canb.auug.org.au)

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by the

 * Free Software Foundation; either version 2, or (at your option) any

 * later version.

 *

 * This program is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * General Public License for more details.

 */

#include <linux/types.h>

typedef unsigned short  apm_event_t;

typedef unsigned short  apm_eventinfo_t;

struct apm_bios_info {

        __u16   version;

        __u16   cseg;

        __u32   offset;

        __u16   cseg_16;

        __u16   dseg;

        __u16   flags;

        __u16   cseg_len;

        __u16   cseg_16_len;

        __u16   dseg_len;

};

#ifdef __KERNEL__

#define APM_CS          (GDT_ENTRY_APMBIOS_BASE * 8)

#define APM_CS_16       (APM_CS + 8)

#define APM_DS          (APM_CS_16 + 8)

/* Results of APM Installation Check */

#define APM_16_BIT_SUPPORT      0x0001

#define APM_32_BIT_SUPPORT      0x0002

#define APM_IDLE_SLOWS_CLOCK    0x0004

#define APM_BIOS_DISABLED       0x0008

#define APM_BIOS_DISENGAGED     0x0010

/*

 * Data for APM that is persistent across module unload/load

 */

struct apm_info {

        struct apm_bios_info    bios;

        unsigned short          connection_version;

        int                     get_power_status_broken;

        int                     get_power_status_swabinminutes;

        int                     allow_ints;

        int                     forbid_idle;

        int                     realmode_power_off;

        int                     disabled;

};

/*

 * The APM function codes

 */

#define APM_FUNC_INST_CHECK     0x5300

#define APM_FUNC_REAL_CONN      0x5301

#define APM_FUNC_16BIT_CONN     0x5302

#define APM_FUNC_32BIT_CONN     0x5303

#define APM_FUNC_DISCONN        0x5304

#define APM_FUNC_IDLE           0x5305

#define APM_FUNC_BUSY           0x5306

#define APM_FUNC_SET_STATE      0x5307

#define APM_FUNC_ENABLE_PM      0x5308

#define APM_FUNC_RESTORE_BIOS   0x5309

#define APM_FUNC_GET_STATUS     0x530a

#define APM_FUNC_GET_EVENT      0x530b

#define APM_FUNC_GET_STATE      0x530c

#define APM_FUNC_ENABLE_DEV_PM  0x530d

#define APM_FUNC_VERSION        0x530e

#define APM_FUNC_ENGAGE_PM      0x530f

#define APM_FUNC_GET_CAP        0x5310

#define APM_FUNC_RESUME_TIMER   0x5311

#define APM_FUNC_RESUME_ON_RING 0x5312

#define APM_FUNC_TIMER          0x5313

/*

 * Function code for APM_FUNC_RESUME_TIMER

 */

#define APM_FUNC_DISABLE_TIMER  0

#define APM_FUNC_GET_TIMER      1

#define APM_FUNC_SET_TIMER      2

/*

 * Function code for APM_FUNC_RESUME_ON_RING

 */

#define APM_FUNC_DISABLE_RING   0

#define APM_FUNC_ENABLE_RING    1

#define APM_FUNC_GET_RING       2

/*

 * Function code for APM_FUNC_TIMER_STATUS

 */

#define APM_FUNC_TIMER_DISABLE  0

#define APM_FUNC_TIMER_ENABLE   1

#define APM_FUNC_TIMER_GET      2

/*

 * in arch/i386/kernel/setup.c

 */

extern struct apm_info  apm_info;

#endif  /* __KERNEL__ */

/*

 * Power states

 */

#define APM_STATE_READY         0x0000

#define APM_STATE_STANDBY       0x0001

#define APM_STATE_SUSPEND       0x0002

#define APM_STATE_OFF           0x0003

#define APM_STATE_BUSY          0x0004

#define APM_STATE_REJECT        0x0005

#define APM_STATE_OEM_SYS       0x0020

#define APM_STATE_OEM_DEV       0x0040

#define APM_STATE_DISABLE       0x0000

#define APM_STATE_ENABLE        0x0001

#define APM_STATE_DISENGAGE     0x0000

#define APM_STATE_ENGAGE        0x0001

/*

 * Events (results of Get PM Event)

 */

#define APM_SYS_STANDBY         0x0001

#define APM_SYS_SUSPEND         0x0002

#define APM_NORMAL_RESUME       0x0003

#define APM_CRITICAL_RESUME     0x0004

#define APM_LOW_BATTERY         0x0005

#define APM_POWER_STATUS_CHANGE 0x0006

#define APM_UPDATE_TIME         0x0007

#define APM_CRITICAL_SUSPEND    0x0008

#define APM_USER_STANDBY        0x0009

#define APM_USER_SUSPEND        0x000a

#define APM_STANDBY_RESUME      0x000b

#define APM_CAPABILITY_CHANGE   0x000c

/*

 * Error codes

 */

#define APM_SUCCESS             0x00

#define APM_DISABLED            0x01

#define APM_CONNECTED           0x02

#define APM_NOT_CONNECTED       0x03

#define APM_16_CONNECTED        0x05

#define APM_16_UNSUPPORTED      0x06

#define APM_32_CONNECTED        0x07

#define APM_32_UNSUPPORTED      0x08

#define APM_BAD_DEVICE          0x09

#define APM_BAD_PARAM           0x0a

#define APM_NOT_ENGAGED         0x0b

#define APM_BAD_FUNCTION        0x0c

#define APM_RESUME_DISABLED     0x0d

#define APM_NO_ERROR            0x53

#define APM_BAD_STATE           0x60

#define APM_NO_EVENTS           0x80

#define APM_NOT_PRESENT         0x86

/*

 * APM Device IDs

 */

#define APM_DEVICE_BIOS         0x0000

#define APM_DEVICE_ALL          0x0001

#define APM_DEVICE_DISPLAY      0x0100

#define APM_DEVICE_STORAGE      0x0200

#define APM_DEVICE_PARALLEL     0x0300

#define APM_DEVICE_SERIAL       0x0400

#define APM_DEVICE_NETWORK      0x0500

#define APM_DEVICE_PCMCIA       0x0600

#define APM_DEVICE_BATTERY      0x8000

#define APM_DEVICE_OEM          0xe000

#define APM_DEVICE_OLD_ALL      0xffff

#define APM_DEVICE_CLASS        0x00ff

#define APM_DEVICE_MASK         0xff00

#ifdef __KERNEL__

/*

 * This is the "All Devices" ID communicated to the BIOS

 */

#define APM_DEVICE_BALL         ((apm_info.connection_version > 0x0100) ? \

                                 APM_DEVICE_ALL : APM_DEVICE_OLD_ALL)

#endif

/*

 * Battery status

 */

#define APM_MAX_BATTERIES       2

/*

 * APM defined capability bit flags

 */

#define APM_CAP_GLOBAL_STANDBY          0x0001

#define APM_CAP_GLOBAL_SUSPEND          0x0002

#define APM_CAP_RESUME_STANDBY_TIMER    0x0004 /* Timer resume from standby */

#define APM_CAP_RESUME_SUSPEND_TIMER    0x0008 /* Timer resume from suspend */

#define APM_CAP_RESUME_STANDBY_RING     0x0010 /* Resume on Ring fr standby */

#define APM_CAP_RESUME_SUSPEND_RING     0x0020 /* Resume on Ring fr suspend */

#define APM_CAP_RESUME_STANDBY_PCMCIA   0x0040 /* Resume on PCMCIA Ring */

#define APM_CAP_RESUME_SUSPEND_PCMCIA   0x0080 /* Resume on PCMCIA Ring */

/*

 * ioctl operations

 */

#include <linux/ioctl.h>

#define APM_IOC_STANDBY         _IO('A', 1)

#define APM_IOC_SUSPEND         _IO('A', 2)

#endif  /* LINUX_APM_H */