1 files changed, 0 insertions, 133 deletions
diff --git a/arch/arm64/crypto/chacha20-neon-glue.c b/arch/arm64/crypto/chacha20-neon-glue.c
deleted file mode 100644
index 727579c93ded..000000000000
--- a/arch/arm64/crypto/chacha20-neon-glue.c
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * ChaCha20 256-bit cipher algorithm, RFC7539, arm64 NEON functions
- *
- * Copyright (C) 2016 - 2017 Linaro, Ltd. <ard.biesheuvel@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Based on:
- * ChaCha20 256-bit cipher algorithm, RFC7539, SIMD glue code
- *
- * Copyright (C) 2015 Martin Willi
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <crypto/algapi.h>
-#include <crypto/chacha20.h>
-#include <crypto/internal/skcipher.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-
-#include <asm/hwcap.h>
-#include <asm/neon.h>
-#include <asm/simd.h>
-
-asmlinkage void chacha20_block_xor_neon(u32 *state, u8 *dst, const u8 *src);
-asmlinkage void chacha20_4block_xor_neon(u32 *state, u8 *dst, const u8 *src);
-
-static void chacha20_doneon(u32 *state, u8 *dst, const u8 *src,
-			    unsigned int bytes)
-{
-	u8 buf[CHACHA20_BLOCK_SIZE];
-
-	while (bytes >= CHACHA20_BLOCK_SIZE * 4) {
-		kernel_neon_begin();
-		chacha20_4block_xor_neon(state, dst, src);
-		kernel_neon_end();
-		bytes -= CHACHA20_BLOCK_SIZE * 4;
-		src += CHACHA20_BLOCK_SIZE * 4;
-		dst += CHACHA20_BLOCK_SIZE * 4;
-		state[12] += 4;
-	}
-
-	if (!bytes)
-		return;
-
-	kernel_neon_begin();
-	while (bytes >= CHACHA20_BLOCK_SIZE) {
-		chacha20_block_xor_neon(state, dst, src);
-		bytes -= CHACHA20_BLOCK_SIZE;
-		src += CHACHA20_BLOCK_SIZE;
-		dst += CHACHA20_BLOCK_SIZE;
-		state[12]++;
-	}
-	if (bytes) {
-		memcpy(buf, src, bytes);
-		chacha20_block_xor_neon(state, buf, buf);
-		memcpy(dst, buf, bytes);
-	}
-	kernel_neon_end();
-}
-
-static int chacha20_neon(struct skcipher_request *req)
-{
-	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
-	struct chacha20_ctx *ctx = crypto_skcipher_ctx(tfm);
-	struct skcipher_walk walk;
-	u32 state[16];
-	int err;
-
-	if (!may_use_simd() || req->cryptlen <= CHACHA20_BLOCK_SIZE)
-		return crypto_chacha20_crypt(req);
-
-	err = skcipher_walk_virt(&walk, req, false);
-
-	crypto_chacha20_init(state, ctx, walk.iv);
-
-	while (walk.nbytes > 0) {
-		unsigned int nbytes = walk.nbytes;
-
-		if (nbytes < walk.total)
-			nbytes = round_down(nbytes, walk.stride);
-
-		chacha20_doneon(state, walk.dst.virt.addr, walk.src.virt.addr,
-				nbytes);
-		err = skcipher_walk_done(&walk, walk.nbytes - nbytes);
-	}
-
-	return err;
-}
-
-static struct skcipher_alg alg = {
-	.base.cra_name		= "chacha20",
-	.base.cra_driver_name	= "chacha20-neon",
-	.base.cra_priority	= 300,
-	.base.cra_blocksize	= 1,
-	.base.cra_ctxsize	= sizeof(struct chacha20_ctx),
-	.base.cra_module	= THIS_MODULE,
-
-	.min_keysize		= CHACHA20_KEY_SIZE,
-	.max_keysize		= CHACHA20_KEY_SIZE,
-	.ivsize			= CHACHA20_IV_SIZE,
-	.chunksize		= CHACHA20_BLOCK_SIZE,
-	.walksize		= 4 * CHACHA20_BLOCK_SIZE,
-	.setkey			= crypto_chacha20_setkey,
-	.encrypt		= chacha20_neon,
-	.decrypt		= chacha20_neon,
-};
-
-static int __init chacha20_simd_mod_init(void)
-{
-	if (!(elf_hwcap & HWCAP_ASIMD))
-		return -ENODEV;
-
-	return crypto_register_skcipher(&alg);
-}
-
-static void __exit chacha20_simd_mod_fini(void)
-{
-	crypto_unregister_skcipher(&alg);
-}
-
-module_init(chacha20_simd_mod_init);
-module_exit(chacha20_simd_mod_fini);
-
-MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS_CRYPTO("chacha20");