virt/kvm/ioapic.h

   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
   8 struct kvm;
   9 struct 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 struct 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)                                                       \
  54 do {                                                                    \
  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
  65 static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
  66 {
  67         return kvm->arch.vioapic;
  68 }
  69
  70 int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
  71                 int short_hand, int dest, int dest_mode);
  72 int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
  73 void kvm_ioapic_update_eoi(struct kvm *kvm, int vector, int trigger_mode);
  74 int kvm_ioapic_init(struct kvm *kvm);
  75 void kvm_ioapic_destroy(struct kvm *kvm);
  76 int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level);
  77 void kvm_ioapic_reset(struct kvm_ioapic *ioapic);
  78 int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
  79                 struct kvm_lapic_irq *irq);
  80 int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
  81 int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
  82
  83 #endif