1 // SPDX-License-Identifier: GPL-2.0 OR MIT 1
2 /*
3 * Copyright (C) 2015-2019 Jason A. Donenfeld
4 */
5
6 #include <crypto/internal/blake2s.h>
7
8 #include <linux/types.h>
9 #include <linux/jump_label.h>
10 #include <linux/kernel.h>
11 #include <linux/sizes.h>
12
13 #include <asm/cpufeature.h>
14 #include <asm/fpu/api.h>
15 #include <asm/processor.h>
16 #include <asm/simd.h>
17
18 asmlinkage void blake2s_compress_ssse3(struct
19 const u
20 const u
21 asmlinkage void blake2s_compress_avx512(struct
22 const
23 const
24
25 static __ro_after_init DEFINE_STATIC_KEY_FALSE
26 static __ro_after_init DEFINE_STATIC_KEY_FALSE
27
28 void blake2s_compress(struct blake2s_state *st
29 size_t nblocks, const u3
30 {
31 /* SIMD disables preemption, so relax
32 BUILD_BUG_ON(SZ_4K / BLAKE2S_BLOCK_SIZ
33
34 if (!static_branch_likely(&blake2s_use
35 blake2s_compress_generic(state
36 return;
37 }
38
39 do {
40 const size_t blocks = min_t(si
41 SZ
42
43 kernel_fpu_begin();
44 if (IS_ENABLED(CONFIG_AS_AVX51
45 static_branch_likely(&blak
46 blake2s_compress_avx51
47 else
48 blake2s_compress_ssse3
49 kernel_fpu_end();
50
51 nblocks -= blocks;
52 block += blocks * BLAKE2S_BLOC
53 } while (nblocks);
54 }
55 EXPORT_SYMBOL(blake2s_compress);
56
57 static int __init blake2s_mod_init(void)
58 {
59 if (boot_cpu_has(X86_FEATURE_SSSE3))
60 static_branch_enable(&blake2s_
61
62 if (IS_ENABLED(CONFIG_AS_AVX512) &&
63 boot_cpu_has(X86_FEATURE_AVX) &&
64 boot_cpu_has(X86_FEATURE_AVX2) &&
65 boot_cpu_has(X86_FEATURE_AVX512F)
66 boot_cpu_has(X86_FEATURE_AVX512VL)
67 cpu_has_xfeatures(XFEATURE_MASK_SS
68 XFEATURE_MASK_AV
69 static_branch_enable(&blake2s_
70
71 return 0;
72 }
73
74 subsys_initcall(blake2s_mod_init);
75
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