diff options
| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2018-08-28 23:50:35 -0600 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2018-09-03 23:52:11 -0600 |
| commit | 07dac52be6336be4a77a399fd7928802711fb77f (patch) | |
| tree | ce42d6b1924ad4a67145d6f43ab3b5fcfba2031f /src/crypto/zinc/blake2s/blake2s-x86_64-glue.h | |
| parent | 6a4e34f63be70ea96851e593172e0d3773086219 (diff) | |
crypto: import zinc
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'src/crypto/zinc/blake2s/blake2s-x86_64-glue.h')
| -rw-r--r-- | src/crypto/zinc/blake2s/blake2s-x86_64-glue.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/crypto/zinc/blake2s/blake2s-x86_64-glue.h b/src/crypto/zinc/blake2s/blake2s-x86_64-glue.h new file mode 100644 index 0000000..9dadaa3 --- /dev/null +++ b/src/crypto/zinc/blake2s/blake2s-x86_64-glue.h @@ -0,0 +1,64 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. + */ + +#include <zinc/blake2s.h> +#include <asm/cpufeature.h> +#include <asm/processor.h> +#include <asm/fpu/api.h> +#include <asm/simd.h> + +#ifdef CONFIG_AS_AVX +asmlinkage void blake2s_compress_avx(struct blake2s_state *state, + const u8 *block, const size_t nblocks, + const u32 inc); +#endif +#ifdef CONFIG_AS_AVX512 +asmlinkage void blake2s_compress_avx512(struct blake2s_state *state, + const u8 *block, const size_t nblocks, + const u32 inc); +#endif + +static bool blake2s_use_avx __ro_after_init; +static bool blake2s_use_avx512 __ro_after_init; + +void __init blake2s_fpu_init(void) +{ + blake2s_use_avx = + boot_cpu_has(X86_FEATURE_AVX) && + cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL); +#ifndef COMPAT_CANNOT_USE_AVX512 + blake2s_use_avx512 = + boot_cpu_has(X86_FEATURE_AVX) && + boot_cpu_has(X86_FEATURE_AVX2) && + boot_cpu_has(X86_FEATURE_AVX512F) && + boot_cpu_has(X86_FEATURE_AVX512VL) && + cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM | + XFEATURE_MASK_AVX512, NULL); +#endif +} + +static inline bool blake2s_arch(struct blake2s_state *state, const u8 *block, + size_t nblocks, const u32 inc) +{ +#ifdef CONFIG_AS_AVX512 + if (blake2s_use_avx512 && irq_fpu_usable()) { + kernel_fpu_begin(); + blake2s_compress_avx512(state, block, nblocks, inc); + kernel_fpu_end(); + return true; + } +#endif +#ifdef CONFIG_AS_AVX + if (blake2s_use_avx && irq_fpu_usable()) { + kernel_fpu_begin(); + blake2s_compress_avx(state, block, nblocks, inc); + kernel_fpu_end(); + return true; + } +#endif + return false; +} + +#define HAVE_BLAKE2S_ARCH_IMPLEMENTATION |