diff options
Diffstat (limited to 'sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20-x86_64-glue.c')
| -rw-r--r-- | sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20-x86_64-glue.c | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20-x86_64-glue.c b/sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20-x86_64-glue.c deleted file mode 100644 index 1bccec70845c..000000000000 --- a/sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20-x86_64-glue.c +++ /dev/null @@ -1,132 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 OR MIT -/* - * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. - */ -#ifdef __linux__ -#include <asm/fpu/api.h> -#include <asm/cpufeature.h> -#include <asm/processor.h> -#include <asm/intel-family.h> -#else -#include <sys/simd-x86_64.h> -#endif - -asmlinkage void hchacha20_ssse3(u32 *derived_key, const u8 *nonce, - const u8 *key); -asmlinkage void chacha20_ssse3(u8 *out, const u8 *in, const size_t len, - const u32 key[8], const u32 counter[4]); -asmlinkage void chacha20_avx2(u8 *out, const u8 *in, const size_t len, - const u32 key[8], const u32 counter[4]); -asmlinkage void chacha20_avx512(u8 *out, const u8 *in, const size_t len, - const u32 key[8], const u32 counter[4]); -asmlinkage void chacha20_avx512vl(u8 *out, const u8 *in, const size_t len, - const u32 key[8], const u32 counter[4]); - -static bool chacha20_use_ssse3 __ro_after_init; -static bool chacha20_use_avx2 __ro_after_init; -static bool chacha20_use_avx512 __ro_after_init; -static bool chacha20_use_avx512vl __ro_after_init; -static bool *const chacha20_nobs[] __initconst = { - &chacha20_use_ssse3, &chacha20_use_avx2, &chacha20_use_avx512, - &chacha20_use_avx512vl }; - -static void __init chacha20_fpu_init(void) -{ -#ifdef __linux__ - chacha20_use_ssse3 = boot_cpu_has(X86_FEATURE_SSSE3); - chacha20_use_avx2 = - boot_cpu_has(X86_FEATURE_AVX) && - boot_cpu_has(X86_FEATURE_AVX2) && - cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL); -#ifndef COMPAT_CANNOT_USE_AVX512 - chacha20_use_avx512 = - boot_cpu_has(X86_FEATURE_AVX) && - boot_cpu_has(X86_FEATURE_AVX2) && - boot_cpu_has(X86_FEATURE_AVX512F) && - cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM | - XFEATURE_MASK_AVX512, NULL) && - /* Skylake downclocks unacceptably much when using zmm. */ - boot_cpu_data.x86_model != INTEL_FAM6_SKYLAKE_X; - chacha20_use_avx512vl = - 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 -#else - chacha20_use_ssse3 = !!(cpu_feature2 & CPUID2_SSSE3); - chacha20_use_avx2 = !!(cpu_feature2 & CPUID2_AVX) && - !!(cpu_stdext_feature & CPUID_STDEXT_AVX2) && - __ymm_enabled(); - chacha20_use_avx512 = chacha20_use_avx2 && - !!(cpu_stdext_feature & CPUID_STDEXT_AVX512F) && - __zmm_enabled(); - chacha20_use_avx512vl = chacha20_use_avx512 && - !!(cpu_stdext_feature & CPUID_STDEXT_AVX512F) && - !!(cpu_stdext_feature & CPUID_STDEXT_AVX512VL); -#endif - if (bootverbose) - printf("ssse3: %d avx2: %d avx512: %d avx512vl: %d\n", - chacha20_use_ssse3, - chacha20_use_avx2, - chacha20_use_avx512, - chacha20_use_avx512vl); -} - -static inline bool chacha20_arch(struct chacha20_ctx *ctx, u8 *dst, - const u8 *src, size_t len, - simd_context_t *simd_context) -{ - /* SIMD disables preemption, so relax after processing each page. */ - BUILD_BUG_ON(PAGE_SIZE < CHACHA20_BLOCK_SIZE || - PAGE_SIZE % CHACHA20_BLOCK_SIZE); - - if (!chacha20_use_ssse3) { - return false; - } - if (len <= CHACHA20_BLOCK_SIZE) { - return false; - } - if (!simd_use(simd_context)) { - return false; - } - for (;;) { - const size_t bytes = min_t(size_t, len, PAGE_SIZE); - - if (chacha20_use_avx512 && - len >= CHACHA20_BLOCK_SIZE * 8) - chacha20_avx512(dst, src, bytes, ctx->key, ctx->counter); - else if (chacha20_use_avx512vl && - len >= CHACHA20_BLOCK_SIZE * 4) - chacha20_avx512vl(dst, src, bytes, ctx->key, ctx->counter); - else if (chacha20_use_avx2 && - len >= CHACHA20_BLOCK_SIZE * 4) - chacha20_avx2(dst, src, bytes, ctx->key, ctx->counter); - else - chacha20_ssse3(dst, src, bytes, ctx->key, ctx->counter); - ctx->counter[0] += (bytes + 63) / 64; - len -= bytes; - if (!len) - break; - dst += bytes; - src += bytes; - simd_relax(simd_context); - } - - return true; -} - -static inline bool hchacha20_arch(u32 derived_key[CHACHA20_KEY_WORDS], - const u8 nonce[HCHACHA20_NONCE_SIZE], - const u8 key[HCHACHA20_KEY_SIZE], - simd_context_t *simd_context) -{ - if (IS_ENABLED(CONFIG_AS_SSSE3) && chacha20_use_ssse3 && - simd_use(simd_context)) { - hchacha20_ssse3(derived_key, nonce, key); - return true; - } - return false; -} |