1 // SPDX-License-Identifier: GPL-2.0-only 1
2 // Copyright 2024 Google LLC
3 // Author: Ard Biesheuvel <ardb@google.com>
4
5 #include <linux/types.h>
6 #include <asm/tlbflush.h>
7
8 #ifdef CONFIG_CPU_TLB_V4WT
9 void v4_flush_user_tlb_range(unsigned long, un
10 void v4_flush_kern_tlb_range(unsigned long, un
11
12 struct cpu_tlb_fns v4_tlb_fns __initconst = {
13 .flush_user_range = v4_flush_use
14 .flush_kern_range = v4_flush_ker
15 .tlb_flags = v4_tlb_flags
16 };
17 #endif
18
19 #ifdef CONFIG_CPU_TLB_V4WB
20 void v4wb_flush_user_tlb_range(unsigned long,
21 void v4wb_flush_kern_tlb_range(unsigned long,
22
23 struct cpu_tlb_fns v4wb_tlb_fns __initconst =
24 .flush_user_range = v4wb_flush_u
25 .flush_kern_range = v4wb_flush_k
26 .tlb_flags = v4wb_tlb_fla
27 };
28 #endif
29
30 #if defined(CONFIG_CPU_TLB_V4WBI) || defined(C
31 void v4wbi_flush_user_tlb_range(unsigned long,
32 void v4wbi_flush_kern_tlb_range(unsigned long,
33
34 struct cpu_tlb_fns v4wbi_tlb_fns __initconst =
35 .flush_user_range = v4wbi_flush_
36 .flush_kern_range = v4wbi_flush_
37 .tlb_flags = v4wbi_tlb_fl
38 };
39 #endif
40
41 #ifdef CONFIG_CPU_TLB_V6
42 void v6wbi_flush_user_tlb_range(unsigned long,
43 void v6wbi_flush_kern_tlb_range(unsigned long,
44
45 struct cpu_tlb_fns v6wbi_tlb_fns __initconst =
46 .flush_user_range = v6wbi_flush_
47 .flush_kern_range = v6wbi_flush_
48 .tlb_flags = v6wbi_tlb_fl
49 };
50 #endif
51
52 #ifdef CONFIG_CPU_TLB_V7
53 void v7wbi_flush_user_tlb_range(unsigned long,
54 void v7wbi_flush_kern_tlb_range(unsigned long,
55
56 struct cpu_tlb_fns v7wbi_tlb_fns __initconst =
57 .flush_user_range = v7wbi_flush_
58 .flush_kern_range = v7wbi_flush_
59 .tlb_flags = IS_ENABLED(C
60
61 };
62
63 #ifdef CONFIG_SMP_ON_UP
64 /* This will be run-time patched so the offset
65 static_assert(offsetof(struct cpu_tlb_fns, tlb
66
67 asm(" .pushsection \".alt.smp.init\", \"a
68 " .align 2
69 " .long v7wbi_tlb_fns + 8 - .
70 " .long " __stringify(v7wbi_tlb_
71 " .popsection
72 #endif
73 #endif
74
75 #ifdef CONFIG_CPU_TLB_FA
76 void fa_flush_user_tlb_range(unsigned long, un
77 void fa_flush_kern_tlb_range(unsigned long, un
78
79 struct cpu_tlb_fns fa_tlb_fns __initconst = {
80 .flush_user_range = fa_flush_use
81 .flush_kern_range = fa_flush_ker
82 .tlb_flags = fa_tlb_flags
83 };
84 #endif
85
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