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#ifndef QEMU_HW_ACPI_H

#define QEMU_HW_ACPI_H

/*

 *  Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>

 *                     VA Linux Systems Japan K.K.

 *

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

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, see

 * <http://www.gnu.org/licenses/>.

 */

/* from linux include/acpi/actype.h */

/* Default ACPI register widths */

#define ACPI_GPE_REGISTER_WIDTH         8

#define ACPI_PM1_REGISTER_WIDTH         16

#define ACPI_PM2_REGISTER_WIDTH         8

#define ACPI_PM_TIMER_WIDTH             32

/* PM Timer ticks per second (HZ) */

#define PM_TIMER_FREQUENCY  3579545

/* ACPI fixed hardware registers */

/* from linux/drivers/acpi/acpica/aclocal.h */

/* Masks used to access the bit_registers */

/* PM1x_STS */

#define ACPI_BITMASK_TIMER_STATUS               0x0001

#define ACPI_BITMASK_BUS_MASTER_STATUS          0x0010

#define ACPI_BITMASK_GLOBAL_LOCK_STATUS         0x0020

#define ACPI_BITMASK_POWER_BUTTON_STATUS        0x0100

#define ACPI_BITMASK_SLEEP_BUTTON_STATUS        0x0200

#define ACPI_BITMASK_RT_CLOCK_STATUS            0x0400

#define ACPI_BITMASK_PCIEXP_WAKE_STATUS         0x4000        /* ACPI 3.0 */

#define ACPI_BITMASK_WAKE_STATUS                0x8000

#define ACPI_BITMASK_ALL_FIXED_STATUS           (\

        ACPI_BITMASK_TIMER_STATUS          | \

        ACPI_BITMASK_BUS_MASTER_STATUS     | \

        ACPI_BITMASK_GLOBAL_LOCK_STATUS    | \

        ACPI_BITMASK_POWER_BUTTON_STATUS   | \

        ACPI_BITMASK_SLEEP_BUTTON_STATUS   | \

        ACPI_BITMASK_RT_CLOCK_STATUS       | \

        ACPI_BITMASK_WAKE_STATUS)

/* PM1x_EN */

#define ACPI_BITMASK_TIMER_ENABLE               0x0001

#define ACPI_BITMASK_GLOBAL_LOCK_ENABLE         0x0020

#define ACPI_BITMASK_POWER_BUTTON_ENABLE        0x0100

#define ACPI_BITMASK_SLEEP_BUTTON_ENABLE        0x0200

#define ACPI_BITMASK_RT_CLOCK_ENABLE            0x0400

#define ACPI_BITMASK_PCIEXP_WAKE_DISABLE        0x4000        /* ACPI 3.0 */

/* PM1x_CNT */

#define ACPI_BITMASK_SCI_ENABLE                 0x0001

#define ACPI_BITMASK_BUS_MASTER_RLD             0x0002

#define ACPI_BITMASK_GLOBAL_LOCK_RELEASE        0x0004

#define ACPI_BITMASK_SLEEP_TYPE                 0x1C00

#define ACPI_BITMASK_SLEEP_ENABLE               0x2000

/* PM2_CNT */

#define ACPI_BITMASK_ARB_DISABLE                0x0001

/* structs */

typedef struct ACPIPMTimer ACPIPMTimer;

typedef struct ACPIPM1EVT ACPIPM1EVT;

typedef struct ACPIPM1CNT ACPIPM1CNT;

typedef struct ACPIGPE ACPIGPE;

typedef struct ACPIREGS ACPIREGS;

typedef void (*acpi_update_sci_fn)(ACPIREGS *ar);

struct ACPIPMTimer {

    QEMUTimer *timer;

    MemoryRegion io;

    int64_t overflow_time;

    acpi_update_sci_fn update_sci;

};

struct ACPIPM1EVT {

    MemoryRegion io;

    uint16_t sts;

    uint16_t en;

    acpi_update_sci_fn update_sci;

};

struct ACPIPM1CNT {

    MemoryRegion io;

    uint16_t cnt;

    uint8_t s4_val;

};

struct ACPIGPE {

    uint8_t len;

    uint8_t *sts;

    uint8_t *en;

};

struct ACPIREGS {

    ACPIPMTimer     tmr;

    ACPIGPE         gpe;

    struct {

        ACPIPM1EVT  evt;

        ACPIPM1CNT  cnt;

    } pm1;

    Notifier wakeup;

};

/* PM_TMR */

void acpi_pm_tmr_update(ACPIREGS *ar, bool enable);

void acpi_pm_tmr_calc_overflow_time(ACPIREGS *ar);

void acpi_pm_tmr_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,

                      MemoryRegion *parent);

void acpi_pm_tmr_reset(ACPIREGS *ar);

#include "qemu/timer.h"

static inline int64_t acpi_pm_tmr_get_clock(void)

{

    return muldiv64(qemu_get_clock_ns(vm_clock), PM_TIMER_FREQUENCY,

                    get_ticks_per_sec());

}

/* PM1a_EVT: piix and ich9 don't implement PM1b. */

uint16_t acpi_pm1_evt_get_sts(ACPIREGS *ar);

void acpi_pm1_evt_power_down(ACPIREGS *ar);

void acpi_pm1_evt_reset(ACPIREGS *ar);

void acpi_pm1_evt_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,

                       MemoryRegion *parent);

/* PM1a_CNT: piix and ich9 don't implement PM1b CNT. */

void acpi_pm1_cnt_init(ACPIREGS *ar, MemoryRegion *parent, uint8_t s4_val);

void acpi_pm1_cnt_update(ACPIREGS *ar,

                         bool sci_enable, bool sci_disable);

void acpi_pm1_cnt_reset(ACPIREGS *ar);

/* GPE0 */

void acpi_gpe_init(ACPIREGS *ar, uint8_t len);

void acpi_gpe_reset(ACPIREGS *ar);

void acpi_gpe_ioport_writeb(ACPIREGS *ar, uint32_t addr, uint32_t val);

uint32_t acpi_gpe_ioport_readb(ACPIREGS *ar, uint32_t addr);

/* acpi.c */

extern int acpi_enabled;

extern char unsigned *acpi_tables;

extern size_t acpi_tables_len;

void acpi_table_add(const QemuOpts *opts, Error **errp);

#endif /* !QEMU_HW_ACPI_H */