linux/virt/kvm/ioapic.h
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   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
  37struct kvm_ioapic {
  38        u64 base_address;
  39        u32 ioregsel;
  40        u32 id;
  41        u32 irr;
  42        u32 pad;
  43        union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
  44        unsigned long irq_states[IOAPIC_NUM_PINS];
  45        struct kvm_io_device dev;
  46        struct kvm *kvm;
  47        void (*ack_notifier)(void *opaque, int irq);
  48        spinlock_t lock;
  49        DECLARE_BITMAP(handled_vectors, 256);
  50};
  51
  52#ifdef DEBUG
  53#define ASSERT(x)                                                       \
  54do {                                                                    \
  55        if (!(x)) {                                                     \
  56                printk(KERN_EMERG "assertion failed %s: %d: %s\n",      \
  57                       __FILE__, __LINE__, #x);                         \
  58                BUG();                                                  \
  59        }                                                               \
  60} while (0)
  61#else
  62#define ASSERT(x) do { } while (0)
  63#endif
  64
  65static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
  66{
  67        return kvm->arch.vioapic;
  68}
  69
  70int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
  71                int short_hand, int dest, int dest_mode);
  72int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
  73void kvm_ioapic_update_eoi(struct kvm *kvm, int vector, int trigger_mode);
  74bool kvm_ioapic_handles_vector(struct kvm *kvm, int vector);
  75int kvm_ioapic_init(struct kvm *kvm);
  76void kvm_ioapic_destroy(struct kvm *kvm);
  77int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
  78                       int level);
  79void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
  80void kvm_ioapic_reset(struct kvm_ioapic *ioapic);
  81int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
  82                struct kvm_lapic_irq *irq);
  83int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
  84int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
  85
  86#endif
  87
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