419c43b667ab8503e8b0a1fc33c51bab99f42be3
[linux-2.6.git] / 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         struct mutex lock;
49 };
50
51 #ifdef DEBUG
52 #define ASSERT(x)                                                       \
53 do {                                                                    \
54         if (!(x)) {                                                     \
55                 printk(KERN_EMERG "assertion failed %s: %d: %s\n",      \
56                        __FILE__, __LINE__, #x);                         \
57                 BUG();                                                  \
58         }                                                               \
59 } while (0)
60 #else
61 #define ASSERT(x) do { } while (0)
62 #endif
63
64 static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
65 {
66         return kvm->arch.vioapic;
67 }
68
69 int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
70                 int short_hand, int dest, int dest_mode);
71 int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
72 void kvm_ioapic_update_eoi(struct kvm *kvm, int vector, int trigger_mode);
73 int kvm_ioapic_init(struct kvm *kvm);
74 int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level);
75 void kvm_ioapic_reset(struct kvm_ioapic *ioapic);
76 int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
77                 struct kvm_lapic_irq *irq);
78 int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
79 int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
80
81 #endif