Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * RISC-V processor specific defines
4 *
5 * Copyright (C) 2021 Western Digital Corporation or its affiliates.
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
13static inline uint64_t __kvm_reg_id(uint64_t type, uint64_t idx,
14 uint64_t size)
15{
16 return KVM_REG_RISCV | type | idx | size;
17}
18
19#if __riscv_xlen == 64
20#define KVM_REG_SIZE_ULONG KVM_REG_SIZE_U64
21#else
22#define KVM_REG_SIZE_ULONG KVM_REG_SIZE_U32
23#endif
24
25#define RISCV_CONFIG_REG(name) __kvm_reg_id(KVM_REG_RISCV_CONFIG, \
26 KVM_REG_RISCV_CONFIG_REG(name), \
27 KVM_REG_SIZE_ULONG)
28
29#define RISCV_CORE_REG(name) __kvm_reg_id(KVM_REG_RISCV_CORE, \
30 KVM_REG_RISCV_CORE_REG(name), \
31 KVM_REG_SIZE_ULONG)
32
33#define RISCV_CSR_REG(name) __kvm_reg_id(KVM_REG_RISCV_CSR, \
34 KVM_REG_RISCV_CSR_REG(name), \
35 KVM_REG_SIZE_ULONG)
36
37#define RISCV_TIMER_REG(name) __kvm_reg_id(KVM_REG_RISCV_TIMER, \
38 KVM_REG_RISCV_TIMER_REG(name), \
39 KVM_REG_SIZE_U64)
40
41#define RISCV_ISA_EXT_REG(idx) __kvm_reg_id(KVM_REG_RISCV_ISA_EXT, \
42 idx, KVM_REG_SIZE_ULONG)
43
44/* L3 index Bit[47:39] */
45#define PGTBL_L3_INDEX_MASK 0x0000FF8000000000ULL
46#define PGTBL_L3_INDEX_SHIFT 39
47#define PGTBL_L3_BLOCK_SHIFT 39
48#define PGTBL_L3_BLOCK_SIZE 0x0000008000000000ULL
49#define PGTBL_L3_MAP_MASK (~(PGTBL_L3_BLOCK_SIZE - 1))
50/* L2 index Bit[38:30] */
51#define PGTBL_L2_INDEX_MASK 0x0000007FC0000000ULL
52#define PGTBL_L2_INDEX_SHIFT 30
53#define PGTBL_L2_BLOCK_SHIFT 30
54#define PGTBL_L2_BLOCK_SIZE 0x0000000040000000ULL
55#define PGTBL_L2_MAP_MASK (~(PGTBL_L2_BLOCK_SIZE - 1))
56/* L1 index Bit[29:21] */
57#define PGTBL_L1_INDEX_MASK 0x000000003FE00000ULL
58#define PGTBL_L1_INDEX_SHIFT 21
59#define PGTBL_L1_BLOCK_SHIFT 21
60#define PGTBL_L1_BLOCK_SIZE 0x0000000000200000ULL
61#define PGTBL_L1_MAP_MASK (~(PGTBL_L1_BLOCK_SIZE - 1))
62/* L0 index Bit[20:12] */
63#define PGTBL_L0_INDEX_MASK 0x00000000001FF000ULL
64#define PGTBL_L0_INDEX_SHIFT 12
65#define PGTBL_L0_BLOCK_SHIFT 12
66#define PGTBL_L0_BLOCK_SIZE 0x0000000000001000ULL
67#define PGTBL_L0_MAP_MASK (~(PGTBL_L0_BLOCK_SIZE - 1))
68
69#define PGTBL_PTE_ADDR_MASK 0x003FFFFFFFFFFC00ULL
70#define PGTBL_PTE_ADDR_SHIFT 10
71#define PGTBL_PTE_RSW_MASK 0x0000000000000300ULL
72#define PGTBL_PTE_RSW_SHIFT 8
73#define PGTBL_PTE_DIRTY_MASK 0x0000000000000080ULL
74#define PGTBL_PTE_DIRTY_SHIFT 7
75#define PGTBL_PTE_ACCESSED_MASK 0x0000000000000040ULL
76#define PGTBL_PTE_ACCESSED_SHIFT 6
77#define PGTBL_PTE_GLOBAL_MASK 0x0000000000000020ULL
78#define PGTBL_PTE_GLOBAL_SHIFT 5
79#define PGTBL_PTE_USER_MASK 0x0000000000000010ULL
80#define PGTBL_PTE_USER_SHIFT 4
81#define PGTBL_PTE_EXECUTE_MASK 0x0000000000000008ULL
82#define PGTBL_PTE_EXECUTE_SHIFT 3
83#define PGTBL_PTE_WRITE_MASK 0x0000000000000004ULL
84#define PGTBL_PTE_WRITE_SHIFT 2
85#define PGTBL_PTE_READ_MASK 0x0000000000000002ULL
86#define PGTBL_PTE_READ_SHIFT 1
87#define PGTBL_PTE_PERM_MASK (PGTBL_PTE_ACCESSED_MASK | \
88 PGTBL_PTE_DIRTY_MASK | \
89 PGTBL_PTE_EXECUTE_MASK | \
90 PGTBL_PTE_WRITE_MASK | \
91 PGTBL_PTE_READ_MASK)
92#define PGTBL_PTE_VALID_MASK 0x0000000000000001ULL
93#define PGTBL_PTE_VALID_SHIFT 0
94
95#define PGTBL_PAGE_SIZE PGTBL_L0_BLOCK_SIZE
96#define PGTBL_PAGE_SIZE_SHIFT PGTBL_L0_BLOCK_SHIFT
97
98#define SATP_PPN _AC(0x00000FFFFFFFFFFF, UL)
99#define SATP_MODE_39 _AC(0x8000000000000000, UL)
100#define SATP_MODE_48 _AC(0x9000000000000000, UL)
101#define SATP_ASID_BITS 16
102#define SATP_ASID_SHIFT 44
103#define SATP_ASID_MASK _AC(0xFFFF, UL)
104
105#define SBI_EXT_EXPERIMENTAL_START 0x08000000
106#define SBI_EXT_EXPERIMENTAL_END 0x08FFFFFF
107
108#define KVM_RISCV_SELFTESTS_SBI_EXT SBI_EXT_EXPERIMENTAL_END
109#define KVM_RISCV_SELFTESTS_SBI_UCALL 0
110#define KVM_RISCV_SELFTESTS_SBI_UNEXP 1
111
112struct sbiret {
113 long error;
114 long value;
115};
116
117struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
118 unsigned long arg1, unsigned long arg2,
119 unsigned long arg3, unsigned long arg4,
120 unsigned long arg5);
121
122#endif /* SELFTEST_KVM_PROCESSOR_H */