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/*

 *  APIC support - internal interfaces

 *

 *  Copyright (c) 2004-2005 Fabrice Bellard

 *  Copyright (c) 2011      Jan Kiszka, Siemens AG

 *

 * 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/>

 */

#ifndef QEMU_APIC_INTERNAL_H

#define QEMU_APIC_INTERNAL_H

#include "memory.h"

#include "sysbus.h"

#include "qemu-timer.h"

/* APIC Local Vector Table */

#define APIC_LVT_TIMER                  0

#define APIC_LVT_THERMAL                1

#define APIC_LVT_PERFORM                2

#define APIC_LVT_LINT0                  3

#define APIC_LVT_LINT1                  4

#define APIC_LVT_ERROR                  5

#define APIC_LVT_NB                     6

/* APIC delivery modes */

#define APIC_DM_FIXED                   0

#define APIC_DM_LOWPRI                  1

#define APIC_DM_SMI                     2

#define APIC_DM_NMI                     4

#define APIC_DM_INIT                    5

#define APIC_DM_SIPI                    6

#define APIC_DM_EXTINT                  7

/* APIC destination mode */

#define APIC_DESTMODE_FLAT              0xf

#define APIC_DESTMODE_CLUSTER           1

#define APIC_TRIGGER_EDGE               0

#define APIC_TRIGGER_LEVEL              1

#define APIC_LVT_TIMER_PERIODIC         (1<<17)

#define APIC_LVT_MASKED                 (1<<16)

#define APIC_LVT_LEVEL_TRIGGER          (1<<15)

#define APIC_LVT_REMOTE_IRR             (1<<14)

#define APIC_INPUT_POLARITY             (1<<13)

#define APIC_SEND_PENDING               (1<<12)

#define ESR_ILLEGAL_ADDRESS (1 << 7)

#define APIC_SV_DIRECTED_IO             (1<<12)

#define APIC_SV_ENABLE                  (1<<8)

#define MAX_APICS 255

#define MSI_SPACE_SIZE                  0x100000

typedef struct APICCommonState APICCommonState;

struct APICCommonState {

    SysBusDevice busdev;

    MemoryRegion io_memory;

    void *cpu_env;

    uint32_t apicbase;

    uint8_t id;

    uint8_t arb_id;

    uint8_t tpr;

    uint32_t spurious_vec;

    uint8_t log_dest;

    uint8_t dest_mode;

    uint32_t isr[8];  /* in service register */

    uint32_t tmr[8];  /* trigger mode register */

    uint32_t irr[8]; /* interrupt request register */

    uint32_t lvt[APIC_LVT_NB];

    uint32_t esr; /* error register */

    uint32_t icr[2];

    uint32_t divide_conf;

    int count_shift;

    uint32_t initial_count;

    int64_t initial_count_load_time;

    int64_t next_time;

    int idx;

    QEMUTimer *timer;

    int64_t timer_expiry;

    int sipi_vector;

    int wait_for_sipi;

};

typedef struct APICCommonInfo APICCommonInfo;

struct APICCommonInfo {

    SysBusDeviceInfo busdev;

    void (*init)(APICCommonState *s);

    void (*set_base)(APICCommonState *s, uint64_t val);

    void (*set_tpr)(APICCommonState *s, uint8_t val);

    void (*external_nmi)(APICCommonState *s);

    void (*post_load)(APICCommonState *s);

};

void apic_report_irq_delivered(int delivered);

void apic_qdev_register(APICCommonInfo *info);

bool apic_next_timer(APICCommonState *s, int64_t current_time);

#endif /* !QEMU_APIC_INTERNAL_H */