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-rw-r--r--kernel/arch/x86/kvm/lapic.h160
1 files changed, 160 insertions, 0 deletions
diff --git a/kernel/arch/x86/kvm/lapic.h b/kernel/arch/x86/kvm/lapic.h
new file mode 100644
index 000000000..9d28383fc
--- /dev/null
+++ b/kernel/arch/x86/kvm/lapic.h
@@ -0,0 +1,160 @@
+#ifndef __KVM_X86_LAPIC_H
+#define __KVM_X86_LAPIC_H
+
+#include <kvm/iodev.h>
+
+#include <linux/kvm_host.h>
+
+#define KVM_APIC_INIT 0
+#define KVM_APIC_SIPI 1
+
+struct kvm_timer {
+ struct hrtimer timer;
+ s64 period; /* unit: ns */
+ u32 timer_mode;
+ u32 timer_mode_mask;
+ u64 tscdeadline;
+ u64 expired_tscdeadline;
+ atomic_t pending; /* accumulated triggered timers */
+};
+
+struct kvm_lapic {
+ unsigned long base_address;
+ struct kvm_io_device dev;
+ struct kvm_timer lapic_timer;
+ u32 divide_count;
+ struct kvm_vcpu *vcpu;
+ bool sw_enabled;
+ bool irr_pending;
+ /* Number of bits set in ISR. */
+ s16 isr_count;
+ /* The highest vector set in ISR; if -1 - invalid, must scan ISR. */
+ int highest_isr_cache;
+ /**
+ * APIC register page. The layout matches the register layout seen by
+ * the guest 1:1, because it is accessed by the vmx microcode.
+ * Note: Only one register, the TPR, is used by the microcode.
+ */
+ void *regs;
+ gpa_t vapic_addr;
+ struct gfn_to_hva_cache vapic_cache;
+ unsigned long pending_events;
+ unsigned int sipi_vector;
+};
+int kvm_create_lapic(struct kvm_vcpu *vcpu);
+void kvm_free_lapic(struct kvm_vcpu *vcpu);
+
+int kvm_apic_has_interrupt(struct kvm_vcpu *vcpu);
+int kvm_apic_accept_pic_intr(struct kvm_vcpu *vcpu);
+int kvm_get_apic_interrupt(struct kvm_vcpu *vcpu);
+void kvm_apic_accept_events(struct kvm_vcpu *vcpu);
+void kvm_lapic_reset(struct kvm_vcpu *vcpu);
+u64 kvm_lapic_get_cr8(struct kvm_vcpu *vcpu);
+void kvm_lapic_set_tpr(struct kvm_vcpu *vcpu, unsigned long cr8);
+void kvm_lapic_set_eoi(struct kvm_vcpu *vcpu);
+void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value);
+u64 kvm_lapic_get_base(struct kvm_vcpu *vcpu);
+void kvm_apic_set_version(struct kvm_vcpu *vcpu);
+
+void kvm_apic_update_tmr(struct kvm_vcpu *vcpu, u32 *tmr);
+void __kvm_apic_update_irr(u32 *pir, void *regs);
+void kvm_apic_update_irr(struct kvm_vcpu *vcpu, u32 *pir);
+int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq,
+ unsigned long *dest_map);
+int kvm_apic_local_deliver(struct kvm_lapic *apic, int lvt_type);
+
+bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
+ struct kvm_lapic_irq *irq, int *r, unsigned long *dest_map);
+
+u64 kvm_get_apic_base(struct kvm_vcpu *vcpu);
+int kvm_set_apic_base(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
+void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu,
+ struct kvm_lapic_state *s);
+int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu);
+
+u64 kvm_get_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu);
+void kvm_set_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu, u64 data);
+
+void kvm_apic_write_nodecode(struct kvm_vcpu *vcpu, u32 offset);
+void kvm_apic_set_eoi_accelerated(struct kvm_vcpu *vcpu, int vector);
+
+int kvm_lapic_set_vapic_addr(struct kvm_vcpu *vcpu, gpa_t vapic_addr);
+void kvm_lapic_sync_from_vapic(struct kvm_vcpu *vcpu);
+void kvm_lapic_sync_to_vapic(struct kvm_vcpu *vcpu);
+
+int kvm_x2apic_msr_write(struct kvm_vcpu *vcpu, u32 msr, u64 data);
+int kvm_x2apic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
+
+int kvm_hv_vapic_msr_write(struct kvm_vcpu *vcpu, u32 msr, u64 data);
+int kvm_hv_vapic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
+
+static inline bool kvm_hv_vapic_assist_page_enabled(struct kvm_vcpu *vcpu)
+{
+ return vcpu->arch.hv_vapic & HV_X64_MSR_APIC_ASSIST_PAGE_ENABLE;
+}
+
+int kvm_lapic_enable_pv_eoi(struct kvm_vcpu *vcpu, u64 data);
+void kvm_lapic_init(void);
+
+static inline u32 kvm_apic_get_reg(struct kvm_lapic *apic, int reg_off)
+{
+ return *((u32 *) (apic->regs + reg_off));
+}
+
+extern struct static_key kvm_no_apic_vcpu;
+
+static inline bool kvm_vcpu_has_lapic(struct kvm_vcpu *vcpu)
+{
+ if (static_key_false(&kvm_no_apic_vcpu))
+ return vcpu->arch.apic;
+ return true;
+}
+
+extern struct static_key_deferred apic_hw_disabled;
+
+static inline int kvm_apic_hw_enabled(struct kvm_lapic *apic)
+{
+ if (static_key_false(&apic_hw_disabled.key))
+ return apic->vcpu->arch.apic_base & MSR_IA32_APICBASE_ENABLE;
+ return MSR_IA32_APICBASE_ENABLE;
+}
+
+extern struct static_key_deferred apic_sw_disabled;
+
+static inline bool kvm_apic_sw_enabled(struct kvm_lapic *apic)
+{
+ if (static_key_false(&apic_sw_disabled.key))
+ return apic->sw_enabled;
+ return true;
+}
+
+static inline bool kvm_apic_present(struct kvm_vcpu *vcpu)
+{
+ return kvm_vcpu_has_lapic(vcpu) && kvm_apic_hw_enabled(vcpu->arch.apic);
+}
+
+static inline int kvm_lapic_enabled(struct kvm_vcpu *vcpu)
+{
+ return kvm_apic_present(vcpu) && kvm_apic_sw_enabled(vcpu->arch.apic);
+}
+
+static inline int apic_x2apic_mode(struct kvm_lapic *apic)
+{
+ return apic->vcpu->arch.apic_base & X2APIC_ENABLE;
+}
+
+static inline bool kvm_apic_vid_enabled(struct kvm *kvm)
+{
+ return kvm_x86_ops->vm_has_apicv(kvm);
+}
+
+static inline bool kvm_apic_has_events(struct kvm_vcpu *vcpu)
+{
+ return vcpu->arch.apic->pending_events;
+}
+
+bool kvm_apic_pending_eoi(struct kvm_vcpu *vcpu, int vector);
+
+void wait_lapic_expire(struct kvm_vcpu *vcpu);
+
+#endif