Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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, ®);
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, ®);
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 */