LXR linux/arch/x86/kvm/vmx/posted

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __KVM_X86_VMX_POSTED_INTR_H
   3#define __KVM_X86_VMX_POSTED_INTR_H
   4
   5#define POSTED_INTR_ON  0
   6#define POSTED_INTR_SN  1
   7
   8/* Posted-Interrupt Descriptor */
   9struct pi_desc {
  10        u32 pir[8];     /* Posted interrupt requested */
  11        union {
  12                struct {
  13                                /* bit 256 - Outstanding Notification */
  14                        u16     on      : 1,
  15                                /* bit 257 - Suppress Notification */
  16                                sn      : 1,
  17                                /* bit 271:258 - Reserved */
  18                                rsvd_1  : 14;
  19                                /* bit 279:272 - Notification Vector */
  20                        u8      nv;
  21                                /* bit 287:280 - Reserved */
  22                        u8      rsvd_2;
  23                                /* bit 319:288 - Notification Destination */
  24                        u32     ndst;
  25                };
  26                u64 control;
  27        };
  28        u32 rsvd[6];
  29} __aligned(64);
  30
  31static inline bool pi_test_and_set_on(struct pi_desc *pi_desc)
  32{
  33        return test_and_set_bit(POSTED_INTR_ON,
  34                        (unsigned long *)&pi_desc->control);
  35}
  36
  37static inline bool pi_test_and_clear_on(struct pi_desc *pi_desc)
  38{
  39        return test_and_clear_bit(POSTED_INTR_ON,
  40                        (unsigned long *)&pi_desc->control);
  41}
  42
  43static inline int pi_test_and_set_pir(int vector, struct pi_desc *pi_desc)
  44{
  45        return test_and_set_bit(vector, (unsigned long *)pi_desc->pir);
  46}
  47
  48static inline bool pi_is_pir_empty(struct pi_desc *pi_desc)
  49{
  50        return bitmap_empty((unsigned long *)pi_desc->pir, NR_VECTORS);
  51}
  52
  53static inline void pi_set_sn(struct pi_desc *pi_desc)
  54{
  55        set_bit(POSTED_INTR_SN,
  56                (unsigned long *)&pi_desc->control);
  57}
  58
  59static inline void pi_set_on(struct pi_desc *pi_desc)
  60{
  61        set_bit(POSTED_INTR_ON,
  62                (unsigned long *)&pi_desc->control);
  63}
  64
  65static inline void pi_clear_on(struct pi_desc *pi_desc)
  66{
  67        clear_bit(POSTED_INTR_ON,
  68                (unsigned long *)&pi_desc->control);
  69}
  70
  71static inline void pi_clear_sn(struct pi_desc *pi_desc)
  72{
  73        clear_bit(POSTED_INTR_SN,
  74                (unsigned long *)&pi_desc->control);
  75}
  76
  77static inline int pi_test_on(struct pi_desc *pi_desc)
  78{
  79        return test_bit(POSTED_INTR_ON,
  80                        (unsigned long *)&pi_desc->control);
  81}
  82
  83static inline int pi_test_sn(struct pi_desc *pi_desc)
  84{
  85        return test_bit(POSTED_INTR_SN,
  86                        (unsigned long *)&pi_desc->control);
  87}
  88
  89void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu);
  90void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu);
  91int pi_pre_block(struct kvm_vcpu *vcpu);
  92void pi_post_block(struct kvm_vcpu *vcpu);
  93void pi_wakeup_handler(void);
  94void __init pi_init_cpu(int cpu);
  95bool pi_has_pending_interrupt(struct kvm_vcpu *vcpu);
  96int pi_update_irte(struct kvm *kvm, unsigned int host_irq, uint32_t guest_irq,
  97                   bool set);
  98void vmx_pi_start_assignment(struct kvm *kvm);
  99
 100#endif /* __KVM_X86_VMX_POSTED_INTR_H */
 101