projects / thirdparty / kernel / stable.git / blame
| Commit | Line | Data |
|---|---|---|
| cf70be9d AP |
1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | /** | |
| 3 | * Copyright (c) 2021 Western Digital Corporation or its affiliates. | |
| 4 | * | |
| 5 | * Authors: | |
| 6 | * Atish Patra <atish.patra@wdc.com> | |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef __RISCV_KVM_VCPU_SBI_H__ | |
| 10 | #define __RISCV_KVM_VCPU_SBI_H__ | |
| 11 | ||
| c62a7685 AP |
12 | #define KVM_SBI_IMPID 3 |
| 13 | ||
| b88e87a0 | 14 | #define KVM_SBI_VERSION_MAJOR 2 |
| d837f191 | 15 | #define KVM_SBI_VERSION_MINOR 0 |
| cf70be9d | 16 | |
| 9f9e3ebe | 17 | enum kvm_riscv_sbi_ext_status { |
| 95c99104 | 18 | KVM_RISCV_SBI_EXT_UNINITIALIZED, |
| 9f9e3ebe AJ |
19 | KVM_RISCV_SBI_EXT_AVAILABLE, |
| 20 | KVM_RISCV_SBI_EXT_UNAVAILABLE, | |
| 21 | }; | |
| 22 | ||
| 23fe562e AP |
23 | struct kvm_vcpu_sbi_context { |
| 24 | int return_handled; | |
| 9f9e3ebe | 25 | enum kvm_riscv_sbi_ext_status ext_status[KVM_RISCV_SBI_EXT_MAX]; |
| 23fe562e AP |
26 | }; |
| 27 | ||
| bae0dfd7 AP |
28 | struct kvm_vcpu_sbi_return { |
| 29 | unsigned long out_val; | |
| 30 | unsigned long err_val; | |
| 31 | struct kvm_cpu_trap *utrap; | |
| 32 | bool uexit; | |
| 33 | }; | |
| 34 | ||
| cf70be9d AP |
35 | struct kvm_vcpu_sbi_extension { |
| 36 | unsigned long extid_start; | |
| 37 | unsigned long extid_end; | |
| 56d8a385 AP |
38 | |
| 39 | bool default_unavail; | |
| 40 | ||
| cf70be9d AP |
41 | /** |
| 42 | * SBI extension handler. It can be defined for a given extension or group of | |
| 43 | * extension. But it should always return linux error codes rather than SBI | |
| 44 | * specific error codes. | |
| 45 | */ | |
| 46 | int (*handler)(struct kvm_vcpu *vcpu, struct kvm_run *run, | |
| bae0dfd7 | 47 | struct kvm_vcpu_sbi_return *retdata); |
| 026bac45 AP |
48 | |
| 49 | /* Extension specific probe function */ | |
| 50 | unsigned long (*probe)(struct kvm_vcpu *vcpu); | |
| cf70be9d AP |
51 | }; |
| 52 | ||
| a046c2d8 | 53 | void kvm_riscv_vcpu_sbi_forward(struct kvm_vcpu *vcpu, struct kvm_run *run); |
| 4b11d865 AP |
54 | void kvm_riscv_vcpu_sbi_system_reset(struct kvm_vcpu *vcpu, |
| 55 | struct kvm_run *run, | |
| 56 | u32 type, u64 flags); | |
| 23fe562e | 57 | int kvm_riscv_vcpu_sbi_return(struct kvm_vcpu *vcpu, struct kvm_run *run); |
| 96b3d4bd AP |
58 | int kvm_riscv_vcpu_set_reg_sbi_ext(struct kvm_vcpu *vcpu, |
| 59 | const struct kvm_one_reg *reg); | |
| 60 | int kvm_riscv_vcpu_get_reg_sbi_ext(struct kvm_vcpu *vcpu, | |
| 61 | const struct kvm_one_reg *reg); | |
| 62 | const struct kvm_vcpu_sbi_extension *kvm_vcpu_sbi_find_ext( | |
| 63 | struct kvm_vcpu *vcpu, unsigned long extid); | |
| 23fe562e | 64 | int kvm_riscv_vcpu_sbi_ecall(struct kvm_vcpu *vcpu, struct kvm_run *run); |
| 56d8a385 | 65 | void kvm_riscv_vcpu_sbi_init(struct kvm_vcpu *vcpu); |
| a046c2d8 | 66 | |
| 3e5e56c6 CD |
67 | #ifdef CONFIG_RISCV_SBI_V01 |
| 68 | extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_v01; | |
| 69 | #endif | |
| 70 | extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_base; | |
| 71 | extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_time; | |
| 72 | extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_ipi; | |
| 73 | extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_rfence; | |
| 74 | extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_srst; | |
| 75 | extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_hsm; | |
| c667ad22 | 76 | extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_dbcn; |
| 3e5e56c6 CD |
77 | extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_experimental; |
| 78 | extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_vendor; | |
| 79 | ||
| 377f71f6 BD |
80 | #ifdef CONFIG_RISCV_PMU_SBI |
| 81 | extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_pmu; | |
| 82 | #endif | |
| cf70be9d | 83 | #endif /* __RISCV_KVM_VCPU_SBI_H__ */ |