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Diffstat (limited to 'sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20-arm-glue.c')
-rw-r--r--sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20-arm-glue.c98
1 files changed, 0 insertions, 98 deletions
diff --git a/sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20-arm-glue.c b/sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20-arm-glue.c
deleted file mode 100644
index 41e2e79abb2b..000000000000
--- a/sys/dev/if_wg/module/crypto/zinc/chacha20/chacha20-arm-glue.c
+++ /dev/null
@@ -1,98 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0 OR MIT
-/*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
- */
-
-#include <asm/hwcap.h>
-#include <asm/neon.h>
-#if defined(CONFIG_ZINC_ARCH_ARM)
-#include <asm/system_info.h>
-#include <asm/cputype.h>
-#endif
-
-asmlinkage void chacha20_arm(u8 *out, const u8 *in, const size_t len,
- const u32 key[8], const u32 counter[4]);
-asmlinkage void hchacha20_arm(const u32 state[16], u32 out[8]);
-asmlinkage void chacha20_neon(u8 *out, const u8 *in, const size_t len,
- const u32 key[8], const u32 counter[4]);
-
-static bool chacha20_use_neon __ro_after_init;
-static bool *const chacha20_nobs[] __initconst = { &chacha20_use_neon };
-static void __init chacha20_fpu_init(void)
-{
-#if defined(CONFIG_ZINC_ARCH_ARM64)
- chacha20_use_neon = cpu_have_named_feature(ASIMD);
-#elif defined(CONFIG_ZINC_ARCH_ARM)
- switch (read_cpuid_part()) {
- case ARM_CPU_PART_CORTEX_A7:
- case ARM_CPU_PART_CORTEX_A5:
- /* The Cortex-A7 and Cortex-A5 do not perform well with the NEON
- * implementation but do incredibly with the scalar one and use
- * less power.
- */
- break;
- default:
- chacha20_use_neon = elf_hwcap & HWCAP_NEON;
- }
-#endif
-}
-
-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);
-
- for (;;) {
- if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && chacha20_use_neon &&
- len >= CHACHA20_BLOCK_SIZE * 3 && simd_use(simd_context)) {
- const size_t bytes = min_t(size_t, len, PAGE_SIZE);
-
- chacha20_neon(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);
- } else {
- chacha20_arm(dst, src, len, ctx->key, ctx->counter);
- ctx->counter[0] += (len + 63) / 64;
- break;
- }
- }
-
- 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_ZINC_ARCH_ARM)) {
- u32 x[] = { CHACHA20_CONSTANT_EXPA,
- CHACHA20_CONSTANT_ND_3,
- CHACHA20_CONSTANT_2_BY,
- CHACHA20_CONSTANT_TE_K,
- get_unaligned_le32(key + 0),
- get_unaligned_le32(key + 4),
- get_unaligned_le32(key + 8),
- get_unaligned_le32(key + 12),
- get_unaligned_le32(key + 16),
- get_unaligned_le32(key + 20),
- get_unaligned_le32(key + 24),
- get_unaligned_le32(key + 28),
- get_unaligned_le32(nonce + 0),
- get_unaligned_le32(nonce + 4),
- get_unaligned_le32(nonce + 8),
- get_unaligned_le32(nonce + 12)
- };
- hchacha20_arm(x, derived_key);
- return true;
- }
- return false;
-}