1 #ifndef _ASM_MIPS_KVM_PARA_H
2 #define _ASM_MIPS_KVM_PARA_H
3
4 #include <uapi/asm/kvm_para.h>
5
6 #define KVM_HYPERCALL ".word 0x42000028"
7
8 /*
9 * Hypercalls for KVM.
10 *
11 * Hypercall number is passed in v0.
12 * Return value will be placed in v0.
13 * Up to 3 arguments are passed in a0, a1, and a2.
14 */
kvm_hypercall0(unsigned long num)15 static inline unsigned long kvm_hypercall0(unsigned long num)
16 {
17 register unsigned long n asm("v0");
18 register unsigned long r asm("v0");
19
20 n = num;
21 __asm__ __volatile__(
22 KVM_HYPERCALL
23 : "=r" (r) : "r" (n) : "memory"
24 );
25
26 return r;
27 }
28
kvm_hypercall1(unsigned long num,unsigned long arg0)29 static inline unsigned long kvm_hypercall1(unsigned long num,
30 unsigned long arg0)
31 {
32 register unsigned long n asm("v0");
33 register unsigned long r asm("v0");
34 register unsigned long a0 asm("a0");
35
36 n = num;
37 a0 = arg0;
38 __asm__ __volatile__(
39 KVM_HYPERCALL
40 : "=r" (r) : "r" (n), "r" (a0) : "memory"
41 );
42
43 return r;
44 }
45
kvm_hypercall2(unsigned long num,unsigned long arg0,unsigned long arg1)46 static inline unsigned long kvm_hypercall2(unsigned long num,
47 unsigned long arg0, unsigned long arg1)
48 {
49 register unsigned long n asm("v0");
50 register unsigned long r asm("v0");
51 register unsigned long a0 asm("a0");
52 register unsigned long a1 asm("a1");
53
54 n = num;
55 a0 = arg0;
56 a1 = arg1;
57 __asm__ __volatile__(
58 KVM_HYPERCALL
59 : "=r" (r) : "r" (n), "r" (a0), "r" (a1) : "memory"
60 );
61
62 return r;
63 }
64
kvm_hypercall3(unsigned long num,unsigned long arg0,unsigned long arg1,unsigned long arg2)65 static inline unsigned long kvm_hypercall3(unsigned long num,
66 unsigned long arg0, unsigned long arg1, unsigned long arg2)
67 {
68 register unsigned long n asm("v0");
69 register unsigned long r asm("v0");
70 register unsigned long a0 asm("a0");
71 register unsigned long a1 asm("a1");
72 register unsigned long a2 asm("a2");
73
74 n = num;
75 a0 = arg0;
76 a1 = arg1;
77 a2 = arg2;
78 __asm__ __volatile__(
79 KVM_HYPERCALL
80 : "=r" (r) : "r" (n), "r" (a0), "r" (a1), "r" (a2) : "memory"
81 );
82
83 return r;
84 }
85
kvm_check_and_clear_guest_paused(void)86 static inline bool kvm_check_and_clear_guest_paused(void)
87 {
88 return false;
89 }
90
kvm_arch_para_features(void)91 static inline unsigned int kvm_arch_para_features(void)
92 {
93 return 0;
94 }
95
96 #ifdef CONFIG_MIPS_PARAVIRT
kvm_para_available(void)97 static inline bool kvm_para_available(void)
98 {
99 return true;
100 }
101 #else
kvm_para_available(void)102 static inline bool kvm_para_available(void)
103 {
104 return false;
105 }
106 #endif
107
108
109 #endif /* _ASM_MIPS_KVM_PARA_H */
110