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