1/* SPDX-License-Identifier: GPL-2.0 */
2// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
3
4#ifndef __ASM_CSKY_CKMMUV2_H
5#define __ASM_CSKY_CKMMUV2_H
6
7#include <abi/reg_ops.h>
8#include <asm/barrier.h>
9
10static inline int read_mmu_index(void)
11{
12	return mfcr("cr<0, 15>");
13}
14
15static inline void write_mmu_index(int value)
16{
17	mtcr("cr<0, 15>", value);
18}
19
20static inline int read_mmu_entrylo0(void)
21{
22	return mfcr("cr<2, 15>");
23}
24
25static inline int read_mmu_entrylo1(void)
26{
27	return mfcr("cr<3, 15>");
28}
29
30static inline void write_mmu_pagemask(int value)
31{
32	mtcr("cr<6, 15>", value);
33}
34
35static inline int read_mmu_entryhi(void)
36{
37	return mfcr("cr<4, 15>");
38}
39
40static inline void write_mmu_entryhi(int value)
41{
42	mtcr("cr<4, 15>", value);
43}
44
45static inline unsigned long read_mmu_msa0(void)
46{
47	return mfcr("cr<30, 15>");
48}
49
50static inline void write_mmu_msa0(unsigned long value)
51{
52	mtcr("cr<30, 15>", value);
53}
54
55static inline unsigned long read_mmu_msa1(void)
56{
57	return mfcr("cr<31, 15>");
58}
59
60static inline void write_mmu_msa1(unsigned long value)
61{
62	mtcr("cr<31, 15>", value);
63}
64
65/*
66 * TLB operations.
67 */
68static inline void tlb_probe(void)
69{
70	mtcr("cr<8, 15>", 0x80000000);
71}
72
73static inline void tlb_read(void)
74{
75	mtcr("cr<8, 15>", 0x40000000);
76}
77
78static inline void tlb_invalid_all(void)
79{
80#ifdef CONFIG_CPU_HAS_TLBI
81	asm volatile("tlbi.alls\n":::"memory");
82	sync_is();
83#else
84	mtcr("cr<8, 15>", 0x04000000);
85#endif
86}
87
88static inline void local_tlb_invalid_all(void)
89{
90#ifdef CONFIG_CPU_HAS_TLBI
91	asm volatile("tlbi.all\n":::"memory");
92	sync_is();
93#else
94	tlb_invalid_all();
95#endif
96}
97
98static inline void tlb_invalid_indexed(void)
99{
100	mtcr("cr<8, 15>", 0x02000000);
101}
102
103static inline void setup_pgd(unsigned long pgd, bool kernel)
104{
105	if (kernel)
106		mtcr("cr<28, 15>", pgd | BIT(0));
107	else
108		mtcr("cr<29, 15>", pgd | BIT(0));
109}
110
111static inline unsigned long get_pgd(void)
112{
113	return mfcr("cr<29, 15>") & ~BIT(0);
114}
115#endif /* __ASM_CSKY_CKMMUV2_H */
116