Merge remote-tracking branches 'regulator/topic/lp8788', 'regulator/topic/mt6311...
[linux-2.6-microblaze.git] / arch / x86 / 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 <kvm/iodev.h>
7
8 struct kvm;
9 struct kvm_vcpu;
10
11 #define IOAPIC_NUM_PINS  KVM_IOAPIC_NUM_PINS
12 #define MAX_NR_RESERVED_IOAPIC_PINS KVM_MAX_IRQ_ROUTES
13 #define IOAPIC_VERSION_ID 0x11  /* IOAPIC version */
14 #define IOAPIC_EDGE_TRIG  0
15 #define IOAPIC_LEVEL_TRIG 1
16
17 #define IOAPIC_DEFAULT_BASE_ADDRESS  0xfec00000
18 #define IOAPIC_MEM_LENGTH            0x100
19
20 /* Direct registers. */
21 #define IOAPIC_REG_SELECT  0x00
22 #define IOAPIC_REG_WINDOW  0x10
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 union kvm_ioapic_redirect_entry {
49         u64 bits;
50         struct {
51                 u8 vector;
52                 u8 delivery_mode:3;
53                 u8 dest_mode:1;
54                 u8 delivery_status:1;
55                 u8 polarity:1;
56                 u8 remote_irr:1;
57                 u8 trig_mode:1;
58                 u8 mask:1;
59                 u8 reserve:7;
60                 u8 reserved[4];
61                 u8 dest_id;
62         } fields;
63 };
64
65 struct kvm_ioapic {
66         u64 base_address;
67         u32 ioregsel;
68         u32 id;
69         u32 irr;
70         u32 pad;
71         union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
72         unsigned long irq_states[IOAPIC_NUM_PINS];
73         struct kvm_io_device dev;
74         struct kvm *kvm;
75         void (*ack_notifier)(void *opaque, int irq);
76         spinlock_t lock;
77         struct rtc_status rtc_status;
78         struct delayed_work eoi_inject;
79         u32 irq_eoi[IOAPIC_NUM_PINS];
80         u32 irr_delivered;
81 };
82
83 #ifdef DEBUG
84 #define ASSERT(x)                                                       \
85 do {                                                                    \
86         if (!(x)) {                                                     \
87                 printk(KERN_EMERG "assertion failed %s: %d: %s\n",      \
88                        __FILE__, __LINE__, #x);                         \
89                 BUG();                                                  \
90         }                                                               \
91 } while (0)
92 #else
93 #define ASSERT(x) do { } while (0)
94 #endif
95
96 static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
97 {
98         return kvm->arch.vioapic;
99 }
100
101 static inline int ioapic_in_kernel(struct kvm *kvm)
102 {
103         int ret;
104
105         ret = (ioapic_irqchip(kvm) != NULL);
106         return ret;
107 }
108
109 void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
110 bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
111                 int short_hand, unsigned int dest, int dest_mode);
112 int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
113 void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector,
114                         int trigger_mode);
115 int kvm_ioapic_init(struct kvm *kvm);
116 void kvm_ioapic_destroy(struct kvm *kvm);
117 int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
118                        int level, bool line_status);
119 void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
120 int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
121                 struct kvm_lapic_irq *irq, unsigned long *dest_map);
122 int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
123 int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
124 void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
125 void kvm_scan_ioapic_routes(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
126
127 #endif