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);
98
99#endif /* __KVM_X86_VMX_POSTED_INTR_H */
100