1 #ifndef __KVM_X86_LAPIC_H 2 #define __KVM_X86_LAPIC_H 3 4 #include "iodev.h" 5 6 #include <linux/kvm_host.h> 7 8 struct kvm_timer { 9 struct hrtimer timer; 10 s64 period; /* unit: ns */ 11 u32 timer_mode_mask; 12 u64 tscdeadline; 13 atomic_t pending; /* accumulated triggered timers */ 14 }; 15 16 struct kvm_lapic { 17 unsigned long base_address; 18 struct kvm_io_device dev; 19 struct kvm_timer lapic_timer; 20 u32 divide_count; 21 struct kvm_vcpu *vcpu; 22 bool irr_pending; 23 /* Number of bits set in ISR. */ 24 s16 isr_count; 25 /* The highest vector set in ISR; if -1 - invalid, must scan ISR. */ 26 int highest_isr_cache; 27 /** 28 * APIC register page. The layout matches the register layout seen by 29 * the guest 1:1, because it is accessed by the vmx microcode. 30 * Note: Only one register, the TPR, is used by the microcode. 31 */ 32 void *regs; 33 gpa_t vapic_addr; 34 struct page *vapic_page; 35 }; 36 int kvm_create_lapic(struct kvm_vcpu *vcpu); 37 void kvm_free_lapic(struct kvm_vcpu *vcpu); 38 39 int kvm_apic_has_interrupt(struct kvm_vcpu *vcpu); 40 int kvm_apic_accept_pic_intr(struct kvm_vcpu *vcpu); 41 int kvm_get_apic_interrupt(struct kvm_vcpu *vcpu); 42 void kvm_lapic_reset(struct kvm_vcpu *vcpu); 43 u64 kvm_lapic_get_cr8(struct kvm_vcpu *vcpu); 44 void kvm_lapic_set_tpr(struct kvm_vcpu *vcpu, unsigned long cr8); 45 void kvm_lapic_set_eoi(struct kvm_vcpu *vcpu); 46 void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value); 47 u64 kvm_lapic_get_base(struct kvm_vcpu *vcpu); 48 void kvm_apic_set_version(struct kvm_vcpu *vcpu); 49 50 int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest); 51 int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda); 52 int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq); 53 int kvm_apic_local_deliver(struct kvm_lapic *apic, int lvt_type); 54 55 bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src, 56 struct kvm_lapic_irq *irq, int *r); 57 58 u64 kvm_get_apic_base(struct kvm_vcpu *vcpu); 59 void kvm_set_apic_base(struct kvm_vcpu *vcpu, u64 data); 60 void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu, 61 struct kvm_lapic_state *s); 62 int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu); 63 64 u64 kvm_get_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu); 65 void kvm_set_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu, u64 data); 66 67 void kvm_lapic_set_vapic_addr(struct kvm_vcpu *vcpu, gpa_t vapic_addr); 68 void kvm_lapic_sync_from_vapic(struct kvm_vcpu *vcpu); 69 void kvm_lapic_sync_to_vapic(struct kvm_vcpu *vcpu); 70 71 int kvm_x2apic_msr_write(struct kvm_vcpu *vcpu, u32 msr, u64 data); 72 int kvm_x2apic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data); 73 74 int kvm_hv_vapic_msr_write(struct kvm_vcpu *vcpu, u32 msr, u64 data); 75 int kvm_hv_vapic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data); 76 77 static inline bool kvm_hv_vapic_assist_page_enabled(struct kvm_vcpu *vcpu) 78 { 79 return vcpu->arch.hv_vapic & HV_X64_MSR_APIC_ASSIST_PAGE_ENABLE; 80 } 81 82 int kvm_lapic_enable_pv_eoi(struct kvm_vcpu *vcpu, u64 data); 83 void kvm_lapic_init(void); 84 85 static inline u32 kvm_apic_get_reg(struct kvm_lapic *apic, int reg_off) 86 { 87 return *((u32 *) (apic->regs + reg_off)); 88 } 89 90 extern struct static_key kvm_no_apic_vcpu; 91 92 static inline bool kvm_vcpu_has_lapic(struct kvm_vcpu *vcpu) 93 { 94 if (static_key_false(&kvm_no_apic_vcpu)) 95 return vcpu->arch.apic; 96 return true; 97 } 98 99 extern struct static_key_deferred apic_hw_disabled; 100 101 static inline int kvm_apic_hw_enabled(struct kvm_lapic *apic) 102 { 103 if (static_key_false(&apic_hw_disabled.key)) 104 return apic->vcpu->arch.apic_base & MSR_IA32_APICBASE_ENABLE; 105 return MSR_IA32_APICBASE_ENABLE; 106 } 107 108 extern struct static_key_deferred apic_sw_disabled; 109 110 static inline int kvm_apic_sw_enabled(struct kvm_lapic *apic) 111 { 112 if (static_key_false(&apic_sw_disabled.key)) 113 return kvm_apic_get_reg(apic, APIC_SPIV) & APIC_SPIV_APIC_ENABLED; 114 return APIC_SPIV_APIC_ENABLED; 115 } 116 117 static inline bool kvm_apic_present(struct kvm_vcpu *vcpu) 118 { 119 return kvm_vcpu_has_lapic(vcpu) && kvm_apic_hw_enabled(vcpu->arch.apic); 120 } 121 122 static inline int kvm_lapic_enabled(struct kvm_vcpu *vcpu) 123 { 124 return kvm_apic_present(vcpu) && kvm_apic_sw_enabled(vcpu->arch.apic); 125 } 126 127 #endif 128