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