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 #ifdef CONFIG_X86
  38 #define RTC_GSI 8
  39 #else
  40 #define RTC_GSI -1U
  41 #endif
  42
  43 struct rtc_status {
  44         int pending_eoi;
  45         DECLARE_BITMAP(dest_map, KVM_MAX_VCPUS);
  46 };
  47
  48 struct kvm_ioapic {
  49         u64 base_address;
  50         u32 ioregsel;
  51         u32 id;
  52         u32 irr;
  53         u32 pad;
  54         union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
  55         unsigned long irq_states[IOAPIC_NUM_PINS];
  56         struct kvm_io_device dev;
  57         struct kvm *kvm;
  58         void (*ack_notifier)(void *opaque, int irq);
  59         spinlock_t lock;
  60         DECLARE_BITMAP(handled_vectors, 256);
  61         struct rtc_status rtc_status;
  62         struct delayed_work eoi_inject;
  63         u32 irq_eoi[IOAPIC_NUM_PINS];
  64 };
  65
  66 #ifdef DEBUG
  67 #define ASSERT(x)                                                       \
  68 do {                                                                    \
  69         if (!(x)) {                                                     \
  70                 printk(KERN_EMERG "assertion failed %s: %d: %s\n",      \
  71                        __FILE__, __LINE__, #x);                         \
  72                 BUG();                                                  \
  73         }                                                               \
  74 } while (0)
  75 #else
  76 #define ASSERT(x) do { } while (0)
  77 #endif
  78
  79 static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
  80 {
  81         return kvm->arch.vioapic;
  82 }
  83
  84 void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
  85 int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
  86                 int short_hand, int dest, int dest_mode);
  87 int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
  88 void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector,
  89                         int trigger_mode);
  90 bool kvm_ioapic_handles_vector(struct kvm *kvm, int vector);
  91 int kvm_ioapic_init(struct kvm *kvm);
  92 void kvm_ioapic_destroy(struct kvm *kvm);
  93 int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
  94                        int level, bool line_status);
  95 void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
  96 int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
  97                 struct kvm_lapic_irq *irq, unsigned long *dest_map);
  98 int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
  99 int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
 100 void kvm_vcpu_request_scan_ioapic(struct kvm *kvm);
 101 void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap,
 102                         u32 *tmr);
 103
 104 #endif