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 
pi_test_and_set_on(struct pi_desc * pi_desc)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 
pi_test_and_clear_on(struct pi_desc * pi_desc)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 
pi_test_and_clear_sn(struct pi_desc * pi_desc)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 
pi_test_and_set_pir(int vector,struct pi_desc * pi_desc)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 
pi_is_pir_empty(struct pi_desc * pi_desc)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 
pi_set_sn(struct pi_desc * pi_desc)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 
pi_set_on(struct pi_desc * pi_desc)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 
pi_clear_on(struct pi_desc * pi_desc)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 
pi_clear_sn(struct pi_desc * pi_desc)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 
pi_test_on(struct pi_desc * pi_desc)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 
pi_test_sn(struct pi_desc * pi_desc)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 */
107