Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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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 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
43static 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
51static 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
59void aarch64_vcpu_setup(struct kvm_vm *vm, int vcpuid, struct kvm_vcpu_init *init);
60void aarch64_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpuid,
61 struct kvm_vcpu_init *init, void *guest_code);
62
63struct ex_regs {
64 u64 regs[31];
65 u64 sp;
66 u64 pc;
67 u64 pstate;
68};
69
70#define VECTOR_NUM 16
71
72enum {
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
109void vm_init_descriptor_tables(struct kvm_vm *vm);
110void vcpu_init_descriptor_tables(struct kvm_vm *vm, uint32_t vcpuid);
111
112typedef void(*handler_fn)(struct ex_regs *);
113void vm_install_exception_handler(struct kvm_vm *vm,
114 int vector, handler_fn handler);
115void 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 */