include/kvm/arm_hypercalls.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) 2019 Arm Ltd. */
   3
   4 #ifndef __KVM_ARM_HYPERCALLS_H
   5 #define __KVM_ARM_HYPERCALLS_H
   6
   7 #include <asm/kvm_emulate.h>
   8
   9 int kvm_smccc_call_handler(struct kvm_vcpu *vcpu);
  10
  11 static inline u32 smccc_get_function(struct kvm_vcpu *vcpu)
  12 {
  13         return vcpu_get_reg(vcpu, 0);
  14 }
  15
  16 static inline unsigned long smccc_get_arg1(struct kvm_vcpu *vcpu)
  17 {
  18         return vcpu_get_reg(vcpu, 1);
  19 }
  20
  21 static inline unsigned long smccc_get_arg2(struct kvm_vcpu *vcpu)
  22 {
  23         return vcpu_get_reg(vcpu, 2);
  24 }
  25
  26 static inline unsigned long smccc_get_arg3(struct kvm_vcpu *vcpu)
  27 {
  28         return vcpu_get_reg(vcpu, 3);
  29 }
  30
  31 static inline void smccc_set_retval(struct kvm_vcpu *vcpu,
  32                                     unsigned long a0,
  33                                     unsigned long a1,
  34                                     unsigned long a2,
  35                                     unsigned long a3)
  36 {
  37         vcpu_set_reg(vcpu, 0, a0);
  38         vcpu_set_reg(vcpu, 1, a1);
  39         vcpu_set_reg(vcpu, 2, a2);
  40         vcpu_set_reg(vcpu, 3, a3);
  41 }
  42
  43 struct kvm_one_reg;
  44
  45 void kvm_arm_init_hypercalls(struct kvm *kvm);
  46 void kvm_arm_teardown_hypercalls(struct kvm *kvm);
  47 int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu);
  48 int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);
  49 int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
  50 int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
  51
  52 int kvm_vm_smccc_has_attr(struct kvm *kvm, struct kvm_device_attr *attr);
  53 int kvm_vm_smccc_set_attr(struct kvm *kvm, struct kvm_device_attr *attr);
  54
  55 #endif