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 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 23 /* Indirect registers. */ 24 #define IOAPIC_REG_APIC_ID 0x00 /* x86 IOAPIC only */ 25 #define IOAPIC_REG_VERSION 0x01 26 #define IOAPIC_REG_ARB_ID 0x02 /* x86 IOAPIC only */ 27 28 /*ioapic delivery mode*/ 29 #define IOAPIC_FIXED 0x0 30 #define IOAPIC_LOWEST_PRIORITY 0x1 31 #define IOAPIC_PMI 0x2 32 #define IOAPIC_NMI 0x4 33 #define IOAPIC_INIT 0x5 34 #define IOAPIC_EXTINT 0x7 35 36 #ifdef CONFIG_X86 37 #define RTC_GSI 8 38 #else 39 #define RTC_GSI -1U 40 #endif 41 42 struct rtc_status { 43 int pending_eoi; 44 DECLARE_BITMAP(dest_map, KVM_MAX_VCPUS); 45 }; 46 47 union kvm_ioapic_redirect_entry { 48 u64 bits; 49 struct { 50 u8 vector; 51 u8 delivery_mode:3; 52 u8 dest_mode:1; 53 u8 delivery_status:1; 54 u8 polarity:1; 55 u8 remote_irr:1; 56 u8 trig_mode:1; 57 u8 mask:1; 58 u8 reserve:7; 59 u8 reserved[4]; 60 u8 dest_id; 61 } fields; 62 }; 63 64 struct kvm_ioapic { 65 u64 base_address; 66 u32 ioregsel; 67 u32 id; 68 u32 irr; 69 u32 pad; 70 union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS]; 71 unsigned long irq_states[IOAPIC_NUM_PINS]; 72 struct kvm_io_device dev; 73 struct kvm *kvm; 74 void (*ack_notifier)(void *opaque, int irq); 75 spinlock_t lock; 76 DECLARE_BITMAP(handled_vectors, 256); 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 bool kvm_ioapic_handles_vector(struct kvm *kvm, int vector) 102 { 103 struct kvm_ioapic *ioapic = kvm->arch.vioapic; 104 smp_rmb(); 105 return test_bit(vector, ioapic->handled_vectors); 106 } 107 108 void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu); 109 bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source, 110 int short_hand, unsigned int dest, int dest_mode); 111 int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2); 112 void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector, 113 int trigger_mode); 114 int kvm_ioapic_init(struct kvm *kvm); 115 void kvm_ioapic_destroy(struct kvm *kvm); 116 int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id, 117 int level, bool line_status); 118 void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id); 119 int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src, 120 struct kvm_lapic_irq *irq, unsigned long *dest_map); 121 int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state); 122 int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state); 123 void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap, 124 u32 *tmr); 125 126 #endif 127