tools/testing/selftests/kvm/include/aarch64/processor.h

   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, &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, &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 */