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 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, &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, &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 */