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 #define PID_TABLE_ENTRY_VALID 1
   9
  10 /* Posted-Interrupt Descriptor */
  11 struct pi_desc {
  12         u32 pir[8];     /* Posted interrupt requested */
  13         union {
  14                 struct {
  15                                 /* bit 256 - Outstanding Notification */
  16                         u16     on      : 1,
  17                                 /* bit 257 - Suppress Notification */
  18                                 sn      : 1,
  19                                 /* bit 271:258 - Reserved */
  20                                 rsvd_1  : 14;
  21                                 /* bit 279:272 - Notification Vector */
  22                         u8      nv;
  23                                 /* bit 287:280 - Reserved */
  24                         u8      rsvd_2;
  25                                 /* bit 319:288 - Notification Destination */
  26                         u32     ndst;
  27                 };
  28                 u64 control;
  29         };
  30         u32 rsvd[6];
  31 } __aligned(64);
  32
  33 static inline bool pi_test_and_set_on(struct pi_desc *pi_desc)
  34 {
  35         return test_and_set_bit(POSTED_INTR_ON,
  36                         (unsigned long *)&pi_desc->control);
  37 }
  38
  39 static inline bool pi_test_and_clear_on(struct pi_desc *pi_desc)
  40 {
  41         return test_and_clear_bit(POSTED_INTR_ON,
  42                         (unsigned long *)&pi_desc->control);
  43 }
  44
  45 static inline bool pi_test_and_clear_sn(struct pi_desc *pi_desc)
  46 {
  47         return test_and_clear_bit(POSTED_INTR_SN,
  48                         (unsigned long *)&pi_desc->control);
  49 }
  50
  51 static inline bool pi_test_and_set_pir(int vector, struct pi_desc *pi_desc)
  52 {
  53         return test_and_set_bit(vector, (unsigned long *)pi_desc->pir);
  54 }
  55
  56 static inline bool pi_is_pir_empty(struct pi_desc *pi_desc)
  57 {
  58         return bitmap_empty((unsigned long *)pi_desc->pir, NR_VECTORS);
  59 }
  60
  61 static inline void pi_set_sn(struct pi_desc *pi_desc)
  62 {
  63         set_bit(POSTED_INTR_SN,
  64                 (unsigned long *)&pi_desc->control);
  65 }
  66
  67 static inline void pi_set_on(struct pi_desc *pi_desc)
  68 {
  69         set_bit(POSTED_INTR_ON,
  70                 (unsigned long *)&pi_desc->control);
  71 }
  72
  73 static inline void pi_clear_on(struct pi_desc *pi_desc)
  74 {
  75         clear_bit(POSTED_INTR_ON,
  76                 (unsigned long *)&pi_desc->control);
  77 }
  78
  79 static inline void pi_clear_sn(struct pi_desc *pi_desc)
  80 {
  81         clear_bit(POSTED_INTR_SN,
  82                 (unsigned long *)&pi_desc->control);
  83 }
  84
  85 static inline bool pi_test_on(struct pi_desc *pi_desc)
  86 {
  87         return test_bit(POSTED_INTR_ON,
  88                         (unsigned long *)&pi_desc->control);
  89 }
  90
  91 static inline bool pi_test_sn(struct pi_desc *pi_desc)
  92 {
  93         return test_bit(POSTED_INTR_SN,
  94                         (unsigned long *)&pi_desc->control);
  95 }
  96
  97 void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu);
  98 void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu);
  99 void pi_wakeup_handler(void);
 100 void __init pi_init_cpu(int cpu);
 101 bool pi_has_pending_interrupt(struct kvm_vcpu *vcpu);
 102 int vmx_pi_update_irte(struct kvm *kvm, unsigned int host_irq,
 103                        uint32_t guest_irq, bool set);
 104 void vmx_pi_start_assignment(struct kvm *kvm);
 105
 106 #endif /* __KVM_X86_VMX_POSTED_INTR_H */