| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _ASM_MIPS_KVM_PARA_H |
| #define _ASM_MIPS_KVM_PARA_H |
| |
| #include <uapi/asm/kvm_para.h> |
| |
| #define KVM_HYPERCALL ".word 0x42000028" |
| |
| /* |
| * Hypercalls for KVM. |
| * |
| * Hypercall number is passed in v0. |
| * Return value will be placed in v0. |
| * Up to 3 arguments are passed in a0, a1, and a2. |
| */ |
| static inline unsigned long kvm_hypercall0(unsigned long num) |
| { |
| register unsigned long n asm("v0"); |
| register unsigned long r asm("v0"); |
| |
| n = num; |
| __asm__ __volatile__( |
| KVM_HYPERCALL |
| : "=r" (r) : "r" (n) : "memory" |
| ); |
| |
| return r; |
| } |
| |
| static inline unsigned long kvm_hypercall1(unsigned long num, |
| unsigned long arg0) |
| { |
| register unsigned long n asm("v0"); |
| register unsigned long r asm("v0"); |
| register unsigned long a0 asm("a0"); |
| |
| n = num; |
| a0 = arg0; |
| __asm__ __volatile__( |
| KVM_HYPERCALL |
| : "=r" (r) : "r" (n), "r" (a0) : "memory" |
| ); |
| |
| return r; |
| } |
| |
| static inline unsigned long kvm_hypercall2(unsigned long num, |
| unsigned long arg0, unsigned long arg1) |
| { |
| register unsigned long n asm("v0"); |
| register unsigned long r asm("v0"); |
| register unsigned long a0 asm("a0"); |
| register unsigned long a1 asm("a1"); |
| |
| n = num; |
| a0 = arg0; |
| a1 = arg1; |
| __asm__ __volatile__( |
| KVM_HYPERCALL |
| : "=r" (r) : "r" (n), "r" (a0), "r" (a1) : "memory" |
| ); |
| |
| return r; |
| } |
| |
| static inline unsigned long kvm_hypercall3(unsigned long num, |
| unsigned long arg0, unsigned long arg1, unsigned long arg2) |
| { |
| register unsigned long n asm("v0"); |
| register unsigned long r asm("v0"); |
| register unsigned long a0 asm("a0"); |
| register unsigned long a1 asm("a1"); |
| register unsigned long a2 asm("a2"); |
| |
| n = num; |
| a0 = arg0; |
| a1 = arg1; |
| a2 = arg2; |
| __asm__ __volatile__( |
| KVM_HYPERCALL |
| : "=r" (r) : "r" (n), "r" (a0), "r" (a1), "r" (a2) : "memory" |
| ); |
| |
| return r; |
| } |
| |
| static inline bool kvm_check_and_clear_guest_paused(void) |
| { |
| return false; |
| } |
| |
| static inline unsigned int kvm_arch_para_features(void) |
| { |
| return 0; |
| } |
| |
| static inline unsigned int kvm_arch_para_hints(void) |
| { |
| return 0; |
| } |
| |
| #ifdef CONFIG_MIPS_PARAVIRT |
| static inline bool kvm_para_available(void) |
| { |
| return true; |
| } |
| #else |
| static inline bool kvm_para_available(void) |
| { |
| return false; |
| } |
| #endif |
| |
| |
| #endif /* _ASM_MIPS_KVM_PARA_H */ |