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 ioapic_redir_entry {
  44                 u64 bits;
  45                 struct {
  46                         u8 vector;
  47                         u8 delivery_mode:3;
  48                         u8 dest_mode:1;
  49                         u8 delivery_status:1;
  50                         u8 polarity:1;
  51                         u8 remote_irr:1;
  52                         u8 trig_mode:1;
  53                         u8 mask:1;
  54                         u8 reserve:7;
  55                         u8 reserved[4];
  56                         u8 dest_id;
  57                 } fields;
  58         } redirtbl[IOAPIC_NUM_PINS];
  59         struct kvm_io_device dev;
  60         struct kvm *kvm;
  61         void (*ack_notifier)(void *opaque, int irq);
  62 };
  63
  64 #ifdef DEBUG
  65 #define ASSERT(x)                                                       \
  66 do {                                                                    \
  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
  77 static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
  78 {
  79         return kvm->arch.vioapic;
  80 }
  81
  82 #ifdef CONFIG_IA64
  83 static inline int irqchip_in_kernel(struct kvm *kvm)
  84 {
  85         return 1;
  86 }
  87 #endif
  88
  89 struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector,
  90                                        unsigned long bitmap);
  91 void kvm_ioapic_update_eoi(struct kvm *kvm, int vector, int trigger_mode);
  92 int kvm_ioapic_init(struct kvm *kvm);
  93 void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level);
  94 void kvm_ioapic_reset(struct kvm_ioapic *ioapic);
  95
  96 #endif