#ifndef __KVM_IO_APIC_H
  #define __KVM_IO_APIC_H
  
  #include <linux/kvm_host.h>
  
  #include "iodev.h"
  
  struct kvm;
  struct kvm_vcpu;
  
  #define IOAPIC_NUM_PINS  KVM_IOAPIC_NUM_PINS
  #define IOAPIC_VERSION_ID 0x11	/* IOAPIC version */
  #define IOAPIC_EDGE_TRIG  0
  #define IOAPIC_LEVEL_TRIG 1
  
  #define IOAPIC_DEFAULT_BASE_ADDRESS  0xfec00000
  #define IOAPIC_MEM_LENGTH            0x100
  
  /* Direct registers. */
  #define IOAPIC_REG_SELECT  0x00
  #define IOAPIC_REG_WINDOW  0x10
  #define IOAPIC_REG_EOI     0x40	/* IA64 IOSAPIC only */
  
  /* Indirect registers. */
  #define IOAPIC_REG_APIC_ID 0x00	/* x86 IOAPIC only */
  #define IOAPIC_REG_VERSION 0x01
  #define IOAPIC_REG_ARB_ID  0x02	/* x86 IOAPIC only */
  
  /*ioapic delivery mode*/
  #define	IOAPIC_FIXED			0x0
  #define	IOAPIC_LOWEST_PRIORITY		0x1
  #define	IOAPIC_PMI			0x2
  #define	IOAPIC_NMI			0x4
  #define	IOAPIC_INIT			0x5
  #define	IOAPIC_EXTINT			0x7
  
  struct kvm_ioapic {
  	u64 base_address;
  	u32 ioregsel;
  	u32 id;
  	u32 irr;
  	u32 pad;

  	union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];

  	unsigned long irq_states[IOAPIC_NUM_PINS];

  	struct kvm_io_device dev;
  	struct kvm *kvm;

  	void (*ack_notifier)(void *opaque, int irq);

  	spinlock_t lock;

  	DECLARE_BITMAP(handled_vectors, 256);

  };
  
  #ifdef DEBUG
  #define ASSERT(x)  							\
  do {									\
  	if (!(x)) {							\
  		printk(KERN_EMERG "assertion failed %s: %d: %s
  ",	\
  		       __FILE__, __LINE__, #x);				\
  		BUG();							\
  	}								\
  } while (0)
  #else
  #define ASSERT(x) do { } while (0)
  #endif
  
  static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
  {
  	return kvm->arch.vioapic;
  }

  int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
  		int short_hand, int dest, int dest_mode);

  int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);

  void kvm_ioapic_update_eoi(struct kvm *kvm, int vector, int trigger_mode);

  int kvm_ioapic_init(struct kvm *kvm);

  void kvm_ioapic_destroy(struct kvm *kvm);

  int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level);

  void kvm_ioapic_reset(struct kvm_ioapic *ioapic);

  int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
  		struct kvm_lapic_irq *irq);

  int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
  int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);

  #endif