/*
 * GPL HEADER START
 *
 * 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 of the License.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * GPL HEADER END
 *
 * Copyright 2011 various Linux Kernel contributors.
 * Copyright 2011 Joyent, Inc. All Rights Reserved.
 */
#ifndef __KVM_X86_LAPIC_H
#define	__KVM_X86_LAPIC_H

#include <vm/page.h>

#include "kvm_iodev.h"
#include "kvm_timer.h"

#define	APIC_LVT_NUM			6
/* 14 is the version for Xeon and Pentium 8.4.8 */
#define	APIC_VERSION			(0x14UL | ((APIC_LVT_NUM - 1) << 16))

typedef struct kvm_lapic {
	unsigned long base_address;
	struct kvm_io_device dev;
	struct kvm_timer lapic_timer;
	uint32_t divide_count;
	struct kvm_vcpu *vcpu;
	int irr_pending;
	void *regs;
	gpa_t vapic_addr;
	page_t *vapic_page;
} kvm_lapic_t;

extern int kvm_create_lapic(struct kvm_vcpu *);
extern void kvm_lapic_reset(struct kvm_vcpu *);
extern void kvm_free_lapic(struct kvm_vcpu *);

extern void kvm_apic_set_version(struct kvm_vcpu *);
extern int kvm_apic_present(struct kvm_vcpu *vcpu);

extern void kvm_lapic_sync_from_vapic(struct kvm_vcpu *);
extern void kvm_lapic_sync_to_vapic(struct kvm_vcpu *);

extern int kvm_apic_has_interrupt(struct kvm_vcpu *);
extern int kvm_apic_accept_pic_intr(struct kvm_vcpu *);
extern int kvm_get_apic_interrupt(struct kvm_vcpu *);
extern int kvm_apic_match_dest(struct kvm_vcpu *, struct kvm_lapic *,
    int, int, int);

extern int kvm_lapic_enabled(struct kvm_vcpu *);
extern uint64_t kvm_lapic_get_cr8(struct kvm_vcpu *);
extern int kvm_lapic_find_highest_irr(struct kvm_vcpu *);
extern int kvm_apic_set_irq(struct kvm_vcpu *, struct kvm_lapic_irq *);
extern int kvm_apic_compare_prio(struct kvm_vcpu *, struct kvm_vcpu *);

extern void kvm_lapic_set_tpr(struct kvm_vcpu *, unsigned long);
extern void kvm_lapic_set_base(struct kvm_vcpu *, uint64_t);
extern int kvm_lapic_set_vapic_addr(struct kvm_vcpu *, struct kvm_vapic_addr *);

extern int kvm_x2apic_msr_write(struct kvm_vcpu *, uint32_t, uint64_t);
extern int kvm_x2apic_msr_read(struct kvm_vcpu *, uint32_t, uint64_t *);

extern int kvm_hv_vapic_msr_write(struct kvm_vcpu *, uint32_t, uint64_t);
extern int kvm_hv_vapic_msr_read(struct kvm_vcpu *, uint32_t, uint64_t *);

extern uint64_t kvm_get_apic_base(struct kvm_vcpu *);
extern void kvm_set_apic_base(struct kvm_vcpu *, uint64_t);

extern int kvm_irq_delivery_to_apic(struct kvm *,
    struct kvm_lapic *, struct kvm_lapic_irq *);
extern void kvm_apic_post_state_restore(struct kvm_vcpu *);

#endif