LXR linux/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
  46static 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
  54static 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
  62void aarch64_vcpu_setup(struct kvm_vm *vm, int vcpuid, struct kvm_vcpu_init *init);
  63void aarch64_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpuid,
  64                              struct kvm_vcpu_init *init, void *guest_code);
  65
  66struct ex_regs {
  67        u64 regs[31];
  68        u64 sp;
  69        u64 pc;
  70        u64 pstate;
  71};
  72
  73#define VECTOR_NUM      16
  74
  75enum {
  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
 112void vm_init_descriptor_tables(struct kvm_vm *vm);
 113void vcpu_init_descriptor_tables(struct kvm_vm *vm, uint32_t vcpuid);
 114
 115typedef void(*handler_fn)(struct ex_regs *);
 116void vm_install_exception_handler(struct kvm_vm *vm,
 117                int vector, handler_fn handler);
 118void 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