diff options
Diffstat (limited to 'arch/riscv/include/asm/kvm_vcpu_sbi.h')
| -rw-r--r-- | arch/riscv/include/asm/kvm_vcpu_sbi.h | 73 |
1 files changed, 68 insertions, 5 deletions
diff --git a/arch/riscv/include/asm/kvm_vcpu_sbi.h b/arch/riscv/include/asm/kvm_vcpu_sbi.h index 83d6d4d2b1df..439ab2b3534f 100644 --- a/arch/riscv/include/asm/kvm_vcpu_sbi.h +++ b/arch/riscv/include/asm/kvm_vcpu_sbi.h @@ -11,26 +11,89 @@ #define KVM_SBI_IMPID 3 -#define KVM_SBI_VERSION_MAJOR 0 -#define KVM_SBI_VERSION_MINOR 3 +#define KVM_SBI_VERSION_MAJOR 2 +#define KVM_SBI_VERSION_MINOR 0 + +enum kvm_riscv_sbi_ext_status { + KVM_RISCV_SBI_EXT_STATUS_UNINITIALIZED, + KVM_RISCV_SBI_EXT_STATUS_UNAVAILABLE, + KVM_RISCV_SBI_EXT_STATUS_ENABLED, + KVM_RISCV_SBI_EXT_STATUS_DISABLED, +}; + +struct kvm_vcpu_sbi_context { + int return_handled; + enum kvm_riscv_sbi_ext_status ext_status[KVM_RISCV_SBI_EXT_MAX]; +}; + +struct kvm_vcpu_sbi_return { + unsigned long out_val; + unsigned long err_val; + struct kvm_cpu_trap *utrap; + bool uexit; +}; struct kvm_vcpu_sbi_extension { unsigned long extid_start; unsigned long extid_end; + + bool default_disabled; + /** * SBI extension handler. It can be defined for a given extension or group of * extension. But it should always return linux error codes rather than SBI * specific error codes. */ int (*handler)(struct kvm_vcpu *vcpu, struct kvm_run *run, - unsigned long *out_val, struct kvm_cpu_trap *utrap, - bool *exit); + struct kvm_vcpu_sbi_return *retdata); + + /* Extension specific probe function */ + unsigned long (*probe)(struct kvm_vcpu *vcpu); }; void kvm_riscv_vcpu_sbi_forward(struct kvm_vcpu *vcpu, struct kvm_run *run); void kvm_riscv_vcpu_sbi_system_reset(struct kvm_vcpu *vcpu, struct kvm_run *run, u32 type, u64 flags); -const struct kvm_vcpu_sbi_extension *kvm_vcpu_sbi_find_ext(unsigned long extid); +void kvm_riscv_vcpu_sbi_request_reset(struct kvm_vcpu *vcpu, + unsigned long pc, unsigned long a1); +void kvm_riscv_vcpu_sbi_load_reset_state(struct kvm_vcpu *vcpu); +int kvm_riscv_vcpu_sbi_return(struct kvm_vcpu *vcpu, struct kvm_run *run); +int kvm_riscv_vcpu_set_reg_sbi_ext(struct kvm_vcpu *vcpu, + const struct kvm_one_reg *reg); +int kvm_riscv_vcpu_get_reg_sbi_ext(struct kvm_vcpu *vcpu, + const struct kvm_one_reg *reg); +int kvm_riscv_vcpu_set_reg_sbi(struct kvm_vcpu *vcpu, + const struct kvm_one_reg *reg); +int kvm_riscv_vcpu_get_reg_sbi(struct kvm_vcpu *vcpu, + const struct kvm_one_reg *reg); +const struct kvm_vcpu_sbi_extension *kvm_vcpu_sbi_find_ext( + struct kvm_vcpu *vcpu, unsigned long extid); +bool riscv_vcpu_supports_sbi_ext(struct kvm_vcpu *vcpu, int idx); +int kvm_riscv_vcpu_sbi_ecall(struct kvm_vcpu *vcpu, struct kvm_run *run); +void kvm_riscv_vcpu_sbi_init(struct kvm_vcpu *vcpu); + +int kvm_riscv_vcpu_get_reg_sbi_sta(struct kvm_vcpu *vcpu, unsigned long reg_num, + unsigned long *reg_val); +int kvm_riscv_vcpu_set_reg_sbi_sta(struct kvm_vcpu *vcpu, unsigned long reg_num, + unsigned long reg_val); + +#ifdef CONFIG_RISCV_SBI_V01 +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_v01; +#endif +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_base; +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_time; +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_ipi; +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_rfence; +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_srst; +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_hsm; +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_dbcn; +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_susp; +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_sta; +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_experimental; +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_vendor; +#ifdef CONFIG_RISCV_PMU_SBI +extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_pmu; +#endif #endif /* __RISCV_KVM_VCPU_SBI_H__ */ |