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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/virt/kvm/ioapic.h
10818 views
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#ifndef __KVM_IO_APIC_H

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#define __KVM_IO_APIC_H

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#include <linux/kvm_host.h>

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#include "iodev.h"

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struct kvm;

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struct kvm_vcpu;

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#define IOAPIC_NUM_PINS  KVM_IOAPIC_NUM_PINS

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#define IOAPIC_VERSION_ID 0x11	/* IOAPIC version */

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#define IOAPIC_EDGE_TRIG  0

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#define IOAPIC_LEVEL_TRIG 1

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#define IOAPIC_DEFAULT_BASE_ADDRESS  0xfec00000

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#define IOAPIC_MEM_LENGTH            0x100

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/* Direct registers. */

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#define IOAPIC_REG_SELECT  0x00

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#define IOAPIC_REG_WINDOW  0x10

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#define IOAPIC_REG_EOI     0x40	/* IA64 IOSAPIC only */

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/* Indirect registers. */

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#define IOAPIC_REG_APIC_ID 0x00	/* x86 IOAPIC only */

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#define IOAPIC_REG_VERSION 0x01

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#define IOAPIC_REG_ARB_ID  0x02	/* x86 IOAPIC only */

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/*ioapic delivery mode*/

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#define	IOAPIC_FIXED			0x0

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#define	IOAPIC_LOWEST_PRIORITY		0x1

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#define	IOAPIC_PMI			0x2

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#define	IOAPIC_NMI			0x4

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#define	IOAPIC_INIT			0x5

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#define	IOAPIC_EXTINT			0x7

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struct kvm_ioapic {

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	u64 base_address;

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	u32 ioregsel;

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	u32 id;

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	u32 irr;

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	u32 pad;

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	union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];

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	unsigned long irq_states[IOAPIC_NUM_PINS];

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	struct kvm_io_device dev;

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	struct kvm *kvm;

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

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	spinlock_t lock;

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	DECLARE_BITMAP(handled_vectors, 256);

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};

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#ifdef DEBUG

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#define ASSERT(x)  							\

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do {									\

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	if (!(x)) {							\

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		printk(KERN_EMERG "assertion failed %s: %d: %s\n",	\

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		       __FILE__, __LINE__, #x);				\

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		BUG();							\

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	}								\

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} while (0)

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#else

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#define ASSERT(x) do { } while (0)

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#endif

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static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)

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{

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	return kvm->arch.vioapic;

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}

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int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,

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		int short_hand, int dest, int dest_mode);

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

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

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int kvm_ioapic_init(struct kvm *kvm);

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void kvm_ioapic_destroy(struct kvm *kvm);

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

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void kvm_ioapic_reset(struct kvm_ioapic *ioapic);

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int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,

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		struct kvm_lapic_irq *irq);

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

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

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#endif

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