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 */
11struct 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
33static inline bool pi_test_and_set_on(struct pi_desc *pi_desc)
34{
35 return test_and_set_bit(POSTED_INTR_ON,
36 addr: (unsigned long *)&pi_desc->control);
37}
38
39static inline bool pi_test_and_clear_on(struct pi_desc *pi_desc)
40{
41 return test_and_clear_bit(POSTED_INTR_ON,
42 addr: (unsigned long *)&pi_desc->control);
43}
44
45static inline bool pi_test_and_clear_sn(struct pi_desc *pi_desc)
46{
47 return test_and_clear_bit(POSTED_INTR_SN,
48 addr: (unsigned long *)&pi_desc->control);
49}
50
51static inline bool pi_test_and_set_pir(int vector, struct pi_desc *pi_desc)
52{
53 return test_and_set_bit(nr: vector, addr: (unsigned long *)pi_desc->pir);
54}
55
56static inline bool pi_is_pir_empty(struct pi_desc *pi_desc)
57{
58 return bitmap_empty(src: (unsigned long *)pi_desc->pir, NR_VECTORS);
59}
60
61static inline void pi_set_sn(struct pi_desc *pi_desc)
62{
63 set_bit(POSTED_INTR_SN,
64 addr: (unsigned long *)&pi_desc->control);
65}
66
67static inline void pi_set_on(struct pi_desc *pi_desc)
68{
69 set_bit(POSTED_INTR_ON,
70 addr: (unsigned long *)&pi_desc->control);
71}
72
73static inline void pi_clear_on(struct pi_desc *pi_desc)
74{
75 clear_bit(POSTED_INTR_ON,
76 addr: (unsigned long *)&pi_desc->control);
77}
78
79static inline void pi_clear_sn(struct pi_desc *pi_desc)
80{
81 clear_bit(POSTED_INTR_SN,
82 addr: (unsigned long *)&pi_desc->control);
83}
84
85static 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
91static 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
97void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu);
98void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu);
99void pi_wakeup_handler(void);
100void __init pi_init_cpu(int cpu);
101bool pi_has_pending_interrupt(struct kvm_vcpu *vcpu);
102int vmx_pi_update_irte(struct kvm *kvm, unsigned int host_irq,
103 uint32_t guest_irq, bool set);
104void vmx_pi_start_assignment(struct kvm *kvm);
105
106#endif /* __KVM_X86_VMX_POSTED_INTR_H */
107

source code of linux/arch/x86/kvm/vmx/posted_intr.h