LXR linux/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
   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 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)                                                       \
  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
  82struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector,
  83                                       unsigned long bitmap);
  84void kvm_ioapic_update_eoi(struct kvm *kvm, int vector, int trigger_mode);
  85int kvm_ioapic_init(struct kvm *kvm);
  86void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level);
  87void kvm_ioapic_reset(struct kvm_ioapic *ioapic);
  88
  89#endif
  90