1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * AArch64 processor specific defines 4 * 5 * Copyright (C) 2018, Red Hat, Inc. 6 */ 7 #ifndef SELFTEST_KVM_PROCESSOR_H 8 #define SELFTEST_KVM_PROCESSOR_H 9 10 #include "kvm_util.h" 11 #include <linux/stringify.h> 12 13 14 #define ARM64_CORE_REG(x) (KVM_REG_ARM64 | KVM_REG_SIZE_U64 | \ 15 KVM_REG_ARM_CORE | KVM_REG_ARM_CORE_REG(x)) 16 17 #define CPACR_EL1 3, 0, 1, 0, 2 18 #define TCR_EL1 3, 0, 2, 0, 2 19 #define MAIR_EL1 3, 0, 10, 2, 0 20 #define MPIDR_EL1 3, 0, 0, 0, 5 21 #define TTBR0_EL1 3, 0, 2, 0, 0 22 #define SCTLR_EL1 3, 0, 1, 0, 0 23 #define VBAR_EL1 3, 0, 12, 0, 0 24 25 #define ID_AA64DFR0_EL1 3, 0, 0, 5, 0 26 27 /* 28 * Default MAIR 29 * index attribute 30 * DEVICE_nGnRnE 0 0000:0000 31 * DEVICE_nGnRE 1 0000:0100 32 * DEVICE_GRE 2 0000:1100 33 * NORMAL_NC 3 0100:0100 34 * NORMAL 4 1111:1111 35 * NORMAL_WT 5 1011:1011 36 */ 37 #define DEFAULT_MAIR_EL1 ((0x00ul << (0 * 8)) | \ 38 (0x04ul << (1 * 8)) | \ 39 (0x0cul << (2 * 8)) | \ 40 (0x44ul << (3 * 8)) | \ 41 (0xfful << (4 * 8)) | \ 42 (0xbbul << (5 * 8))) 43 44 #define MPIDR_HWID_BITMASK (0xff00fffffful) 45 46 static inline void get_reg(struct kvm_vm *vm, uint32_t vcpuid, uint64_t id, uint64_t *addr) 47 { 48 struct kvm_one_reg reg; 49 reg.id = id; 50 reg.addr = (uint64_t)addr; 51 vcpu_ioctl(vm, vcpuid, KVM_GET_ONE_REG, ®); 52 } 53 54 static inline void set_reg(struct kvm_vm *vm, uint32_t vcpuid, uint64_t id, uint64_t val) 55 { 56 struct kvm_one_reg reg; 57 reg.id = id; 58 reg.addr = (uint64_t)&val; 59 vcpu_ioctl(vm, vcpuid, KVM_SET_ONE_REG, ®); 60 } 61 62 void aarch64_vcpu_setup(struct kvm_vm *vm, int vcpuid, struct kvm_vcpu_init *init); 63 void aarch64_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpuid, 64 struct kvm_vcpu_init *init, void *guest_code); 65 66 struct ex_regs { 67 u64 regs[31]; 68 u64 sp; 69 u64 pc; 70 u64 pstate; 71 }; 72 73 #define VECTOR_NUM 16 74 75 enum { 76 VECTOR_SYNC_CURRENT_SP0, 77 VECTOR_IRQ_CURRENT_SP0, 78 VECTOR_FIQ_CURRENT_SP0, 79 VECTOR_ERROR_CURRENT_SP0, 80 81 VECTOR_SYNC_CURRENT, 82 VECTOR_IRQ_CURRENT, 83 VECTOR_FIQ_CURRENT, 84 VECTOR_ERROR_CURRENT, 85 86 VECTOR_SYNC_LOWER_64, 87 VECTOR_IRQ_LOWER_64, 88 VECTOR_FIQ_LOWER_64, 89 VECTOR_ERROR_LOWER_64, 90 91 VECTOR_SYNC_LOWER_32, 92 VECTOR_IRQ_LOWER_32, 93 VECTOR_FIQ_LOWER_32, 94 VECTOR_ERROR_LOWER_32, 95 }; 96 97 #define VECTOR_IS_SYNC(v) ((v) == VECTOR_SYNC_CURRENT_SP0 || \ 98 (v) == VECTOR_SYNC_CURRENT || \ 99 (v) == VECTOR_SYNC_LOWER_64 || \ 100 (v) == VECTOR_SYNC_LOWER_32) 101 102 #define ESR_EC_NUM 64 103 #define ESR_EC_SHIFT 26 104 #define ESR_EC_MASK (ESR_EC_NUM - 1) 105 106 #define ESR_EC_SVC64 0x15 107 #define ESR_EC_HW_BP_CURRENT 0x31 108 #define ESR_EC_SSTEP_CURRENT 0x33 109 #define ESR_EC_WP_CURRENT 0x35 110 #define ESR_EC_BRK_INS 0x3c 111 112 void vm_init_descriptor_tables(struct kvm_vm *vm); 113 void vcpu_init_descriptor_tables(struct kvm_vm *vm, uint32_t vcpuid); 114 115 typedef void(*handler_fn)(struct ex_regs *); 116 void vm_install_exception_handler(struct kvm_vm *vm, 117 int vector, handler_fn handler); 118 void vm_install_sync_handler(struct kvm_vm *vm, 119 int vector, int ec, handler_fn handler); 120 121 #define write_sysreg(reg, val) \ 122 ({ \ 123 u64 __val = (u64)(val); \ 124 asm volatile("msr " __stringify(reg) ", %x0" : : "rZ" (__val)); \ 125 }) 126 127 #define read_sysreg(reg) \ 128 ({ u64 val; \ 129 asm volatile("mrs %0, "__stringify(reg) : "=r"(val) : : "memory");\ 130 val; \ 131 }) 132 133 #define isb() asm volatile("isb" : : : "memory") 134 135 #endif /* SELFTEST_KVM_PROCESSOR_H */ 136