1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
4 */
5 #ifndef __ASM_TLB_H
6 #define __ASM_TLB_H
7
8 #include <linux/mm_types.h>
9 #include <asm/cpu-features.h>
10 #include <asm/loongarch.h>
11
12 /*
13 * TLB Invalidate Flush
14 */
15 static inline void tlbclr(void)
16 {
17 __asm__ __volatile__("tlbclr");
18 }
19
20 static inline void tlbflush(void)
21 {
22 __asm__ __volatile__("tlbflush");
23 }
24
25 /*
26 * TLB R/W operations.
27 */
28 static inline void tlb_probe(void)
29 {
30 __asm__ __volatile__("tlbsrch");
31 }
32
33 static inline void tlb_read(void)
34 {
35 __asm__ __volatile__("tlbrd");
36 }
37
38 static inline void tlb_write_indexed(void)
39 {
40 __asm__ __volatile__("tlbwr");
41 }
42
43 static inline void tlb_write_random(void)
44 {
45 __asm__ __volatile__("tlbfill");
46 }
47
48 enum invtlb_ops {
49 /* Invalid all tlb */
50 INVTLB_ALL = 0x0,
51 /* Invalid current tlb */
52 INVTLB_CURRENT_ALL = 0x1,
53 /* Invalid all global=1 lines in current tlb */
54 INVTLB_CURRENT_GTRUE = 0x2,
55 /* Invalid all global=0 lines in current tlb */
56 INVTLB_CURRENT_GFALSE = 0x3,
57 /* Invalid global=0 and matched asid lines in current tlb */
58 INVTLB_GFALSE_AND_ASID = 0x4,
59 /* Invalid addr with global=0 and matched asid in current tlb */
60 INVTLB_ADDR_GFALSE_AND_ASID = 0x5,
61 /* Invalid addr with global=1 or matched asid in current tlb */
62 INVTLB_ADDR_GTRUE_OR_ASID = 0x6,
63 /* Invalid matched gid in guest tlb */
64 INVGTLB_GID = 0x9,
65 /* Invalid global=1, matched gid in guest tlb */
66 INVGTLB_GID_GTRUE = 0xa,
67 /* Invalid global=0, matched gid in guest tlb */
68 INVGTLB_GID_GFALSE = 0xb,
69 /* Invalid global=0, matched gid and asid in guest tlb */
70 INVGTLB_GID_GFALSE_ASID = 0xc,
71 /* Invalid global=0 , matched gid, asid and addr in guest tlb */
72 INVGTLB_GID_GFALSE_ASID_ADDR = 0xd,
73 /* Invalid global=1 , matched gid, asid and addr in guest tlb */
74 INVGTLB_GID_GTRUE_ASID_ADDR = 0xe,
75 /* Invalid all gid gva-->gpa guest tlb */
76 INVGTLB_ALLGID_GVA_TO_GPA = 0x10,
77 /* Invalid all gid gpa-->hpa tlb */
78 INVTLB_ALLGID_GPA_TO_HPA = 0x11,
79 /* Invalid all gid tlb, including gva-->gpa and gpa-->hpa */
80 INVTLB_ALLGID = 0x12,
81 /* Invalid matched gid gva-->gpa guest tlb */
82 INVGTLB_GID_GVA_TO_GPA = 0x13,
83 /* Invalid matched gid gpa-->hpa tlb */
84 INVTLB_GID_GPA_TO_HPA = 0x14,
85 /* Invalid matched gid tlb,including gva-->gpa and gpa-->hpa */
86 INVTLB_GID_ALL = 0x15,
87 /* Invalid matched gid and addr gpa-->hpa tlb */
88 INVTLB_GID_ADDR = 0x16,
89 };
90
91 static __always_inline void invtlb(u32 op, u32 info, u64 addr)
92 {
93 __asm__ __volatile__(
94 "invtlb %0, %1, %2\n\t"
95 :
96 : "i"(op), "r"(info), "r"(addr)
97 : "memory"
98 );
99 }
100
101 static __always_inline void invtlb_addr(u32 op, u32 info, u64 addr)
102 {
103 BUILD_BUG_ON(!__builtin_constant_p(info) || info != 0);
104 __asm__ __volatile__(
105 "invtlb %0, $zero, %1\n\t"
106 :
107 : "i"(op), "r"(addr)
108 : "memory"
109 );
110 }
111
112 static __always_inline void invtlb_info(u32 op, u32 info, u64 addr)
113 {
114 BUILD_BUG_ON(!__builtin_constant_p(addr) || addr != 0);
115 __asm__ __volatile__(
116 "invtlb %0, %1, $zero\n\t"
117 :
118 : "i"(op), "r"(info)
119 : "memory"
120 );
121 }
122
123 static __always_inline void invtlb_all(u32 op, u32 info, u64 addr)
124 {
125 BUILD_BUG_ON(!__builtin_constant_p(info) || info != 0);
126 BUILD_BUG_ON(!__builtin_constant_p(addr) || addr != 0);
127 __asm__ __volatile__(
128 "invtlb %0, $zero, $zero\n\t"
129 :
130 : "i"(op)
131 : "memory"
132 );
133 }
134
135 static void tlb_flush(struct mmu_gather *tlb);
136
137 #define tlb_flush tlb_flush
138 #include <asm-generic/tlb.h>
139
140 static inline void tlb_flush(struct mmu_gather *tlb)
141 {
142 struct vm_area_struct vma;
143
144 vma.vm_mm = tlb->mm;
145 vm_flags_init(&vma, 0);
146 if (tlb->fullmm) {
147 flush_tlb_mm(tlb->mm);
148 return;
149 }
150
151 flush_tlb_range(&vma, tlb->start, tlb->end);
152 }
153
154 extern void handle_tlb_load(void);
155 extern void handle_tlb_store(void);
156 extern void handle_tlb_modify(void);
157 extern void handle_tlb_refill(void);
158 extern void handle_tlb_protect(void);
159 extern void handle_tlb_load_ptw(void);
160 extern void handle_tlb_store_ptw(void);
161 extern void handle_tlb_modify_ptw(void);
162
163 extern void dump_tlb_all(void);
164 extern void dump_tlb_regs(void);
165
166 #endif /* __ASM_TLB_H */
167
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