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
pi_test_and_set_on(struct pi_desc * pi_desc)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
pi_test_and_clear_on(struct pi_desc * pi_desc)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
pi_test_and_set_pir(int vector,struct pi_desc * pi_desc)43 static 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
pi_is_pir_empty(struct pi_desc * pi_desc)48 static 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
pi_set_sn(struct pi_desc * pi_desc)53 static 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
pi_set_on(struct pi_desc * pi_desc)59 static 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
pi_clear_on(struct pi_desc * pi_desc)65 static 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
pi_clear_sn(struct pi_desc * pi_desc)71 static 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
pi_test_on(struct pi_desc * pi_desc)77 static 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
pi_test_sn(struct pi_desc * pi_desc)83 static 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
89 void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu);
90 void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu);
91 int pi_pre_block(struct kvm_vcpu *vcpu);
92 void pi_post_block(struct kvm_vcpu *vcpu);
93 void pi_wakeup_handler(void);
94 void __init pi_init_cpu(int cpu);
95 bool pi_has_pending_interrupt(struct kvm_vcpu *vcpu);
96 int pi_update_irte(struct kvm *kvm, unsigned int host_irq, uint32_t guest_irq,
97 bool set);
98 void vmx_pi_start_assignment(struct kvm *kvm);
99
100 #endif /* __KVM_X86_VMX_POSTED_INTR_H */
101