arch/x86/kvm/vmx/posted_intr.h

   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 */
   9 struct 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
  31 static 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
  37 static 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
  43 static inline bool pi_test_and_clear_sn(struct pi_desc *pi_desc)
  44 {
  45         return test_and_clear_bit(POSTED_INTR_SN,
  46                         (unsigned long *)&pi_desc->control);
  47 }
  48
  49 static inline bool pi_test_and_set_pir(int vector, struct pi_desc *pi_desc)
  50 {
  51         return test_and_set_bit(vector, (unsigned long *)pi_desc->pir);
  52 }
  53
  54 static inline bool pi_is_pir_empty(struct pi_desc *pi_desc)
  55 {
  56         return bitmap_empty((unsigned long *)pi_desc->pir, NR_VECTORS);
  57 }
  58
  59 static inline void pi_set_sn(struct pi_desc *pi_desc)
  60 {
  61         set_bit(POSTED_INTR_SN,
  62                 (unsigned long *)&pi_desc->control);
  63 }
  64
  65 static inline void pi_set_on(struct pi_desc *pi_desc)
  66 {
  67         set_bit(POSTED_INTR_ON,
  68                 (unsigned long *)&pi_desc->control);
  69 }
  70
  71 static inline void pi_clear_on(struct pi_desc *pi_desc)
  72 {
  73         clear_bit(POSTED_INTR_ON,
  74                 (unsigned long *)&pi_desc->control);
  75 }
  76
  77 static inline void pi_clear_sn(struct pi_desc *pi_desc)
  78 {
  79         clear_bit(POSTED_INTR_SN,
  80                 (unsigned long *)&pi_desc->control);
  81 }
  82
  83 static inline bool pi_test_on(struct pi_desc *pi_desc)
  84 {
  85         return test_bit(POSTED_INTR_ON,
  86                         (unsigned long *)&pi_desc->control);
  87 }
  88
  89 static inline bool pi_test_sn(struct pi_desc *pi_desc)
  90 {
  91         return test_bit(POSTED_INTR_SN,
  92                         (unsigned long *)&pi_desc->control);
  93 }
  94
  95 void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu);
  96 void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu);
  97 void pi_wakeup_handler(void);
  98 void __init pi_init_cpu(int cpu);
  99 bool pi_has_pending_interrupt(struct kvm_vcpu *vcpu);
 100 int vmx_pi_update_irte(struct kvm *kvm, unsigned int host_irq,
 101                        uint32_t guest_irq, bool set);
 102 void vmx_pi_start_assignment(struct kvm *kvm);
 103
 104 #endif /* __KVM_X86_VMX_POSTED_INTR_H */