1#ifndef __KVM_IO_APIC_H
  2#define __KVM_IO_APIC_H
  3
  4#include <linux/kvm_host.h>
  5
  6#include "iodev.h"
  7
  8struct kvm;
  9struct kvm_vcpu;
 10
 11#define IOAPIC_NUM_PINS  KVM_IOAPIC_NUM_PINS
 12#define IOAPIC_VERSION_ID 0x11	/* IOAPIC version */
 13#define IOAPIC_EDGE_TRIG  0
 14#define IOAPIC_LEVEL_TRIG 1
 15
 16#define IOAPIC_DEFAULT_BASE_ADDRESS  0xfec00000
 17#define IOAPIC_MEM_LENGTH            0x100
 18
 19/* Direct registers. */
 20#define IOAPIC_REG_SELECT  0x00
 21#define IOAPIC_REG_WINDOW  0x10
 22#define IOAPIC_REG_EOI     0x40	/* IA64 IOSAPIC only */
 23
 24/* Indirect registers. */
 25#define IOAPIC_REG_APIC_ID 0x00	/* x86 IOAPIC only */
 26#define IOAPIC_REG_VERSION 0x01
 27#define IOAPIC_REG_ARB_ID  0x02	/* x86 IOAPIC only */
 28
 29/*ioapic delivery mode*/
 30#define	IOAPIC_FIXED			0x0
 31#define	IOAPIC_LOWEST_PRIORITY		0x1
 32#define	IOAPIC_PMI			0x2
 33#define	IOAPIC_NMI			0x4
 34#define	IOAPIC_INIT			0x5
 35#define	IOAPIC_EXTINT			0x7
 36
 37#ifdef CONFIG_X86
 38#define RTC_GSI 8
 39#else
 40#define RTC_GSI -1U
 41#endif
 42
 43struct rtc_status {
 44	int pending_eoi;
 45	DECLARE_BITMAP(dest_map, KVM_MAX_VCPUS);
 46};
 47
 48struct kvm_ioapic {
 49	u64 base_address;
 50	u32 ioregsel;
 51	u32 id;
 52	u32 irr;
 53	u32 pad;
 54	union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
 55	unsigned long irq_states[IOAPIC_NUM_PINS];
 56	struct kvm_io_device dev;
 57	struct kvm *kvm;
 58	void (*ack_notifier)(void *opaque, int irq);
 59	spinlock_t lock;
 60	DECLARE_BITMAP(handled_vectors, 256);
 61	struct rtc_status rtc_status;
 62};
 63
 64#ifdef DEBUG
 65#define ASSERT(x)  							\
 66do {									\
 67	if (!(x)) {							\
 68		printk(KERN_EMERG "assertion failed %s: %d: %s\n",	\
 69		       __FILE__, __LINE__, #x);				\
 70		BUG();							\
 71	}								\
 72} while (0)
 73#else
 74#define ASSERT(x) do { } while (0)
 75#endif
 76
 77static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
 78{
 79	return kvm->arch.vioapic;
 80}
 81
 82void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
 83int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
 84		int short_hand, int dest, int dest_mode);
 85int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
 86void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector,
 87			int trigger_mode);
 88bool kvm_ioapic_handles_vector(struct kvm *kvm, int vector);
 89int kvm_ioapic_init(struct kvm *kvm);
 90void kvm_ioapic_destroy(struct kvm *kvm);
 91int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
 92		       int level, bool line_status);
 93void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
 94int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
 95		struct kvm_lapic_irq *irq, unsigned long *dest_map);
 96int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
 97int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
 98void kvm_vcpu_request_scan_ioapic(struct kvm *kvm);
 99void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap,
100			u32 *tmr);
101
102#endif