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 */
15static 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
29static 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
46static 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
65static 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
86static inline bool kvm_check_and_clear_guest_paused(void)
87{
88	return false;
89}
90
91static inline unsigned int kvm_arch_para_features(void)
92{
93	return 0;
94}
95
96#ifdef CONFIG_MIPS_PARAVIRT
97static inline bool kvm_para_available(void)
98{
99	return true;
100}
101#else
102static inline bool kvm_para_available(void)
103{
104	return false;
105}
106#endif
107
108
109#endif /* _ASM_MIPS_KVM_PARA_H */
110