1 files changed, 0 insertions, 443 deletions

diff --git a/arch/arm/crypto/aesbs-glue.c b/arch/arm/crypto/aesbs-glue.c
deleted file mode 100644
index 0511a6cafe24..000000000000
--- a/arch/arm/crypto/aesbs-glue.c
+++ /dev/null
@@ -1,443 +0,0 @@
-/*
- * linux/arch/arm/crypto/aesbs-glue.c - glue code for NEON bit sliced AES
- *
- * Copyright (C) 2013 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.
- */
-
-#include <asm/neon.h>
-#include <crypto/aes.h>
-#include <crypto/ablk_helper.h>
-#include <crypto/algapi.h>
-#include <linux/module.h>
-#include <crypto/xts.h>
-
-#include "aes_glue.h"
-
-#define BIT_SLICED_KEY_MAXSIZE	(128 * (AES_MAXNR - 1) + 2 * AES_BLOCK_SIZE)
-
-struct BS_KEY {
-	struct AES_KEY	rk;
-	int		converted;
-	u8 __aligned(8)	bs[BIT_SLICED_KEY_MAXSIZE];
-} __aligned(8);
-
-asmlinkage void bsaes_enc_key_convert(u8 out[], struct AES_KEY const *in);
-asmlinkage void bsaes_dec_key_convert(u8 out[], struct AES_KEY const *in);
-
-asmlinkage void bsaes_cbc_encrypt(u8 const in[], u8 out[], u32 bytes,
-				  struct BS_KEY *key, u8 iv[]);
-
-asmlinkage void bsaes_ctr32_encrypt_blocks(u8 const in[], u8 out[], u32 blocks,
-					   struct BS_KEY *key, u8 const iv[]);
-
-asmlinkage void bsaes_xts_encrypt(u8 const in[], u8 out[], u32 bytes,
-				  struct BS_KEY *key, u8 tweak[]);
-
-asmlinkage void bsaes_xts_decrypt(u8 const in[], u8 out[], u32 bytes,
-				  struct BS_KEY *key, u8 tweak[]);
-
-struct aesbs_cbc_ctx {
-	struct AES_KEY	enc;
-	struct BS_KEY	dec;
-};
-
-struct aesbs_ctr_ctx {
-	struct BS_KEY	enc;
-};
-
-struct aesbs_xts_ctx {
-	struct BS_KEY	enc;
-	struct BS_KEY	dec;
-	struct AES_KEY	twkey;
-};
-
-static int aesbs_cbc_set_key(struct crypto_tfm *tfm, const u8 *in_key,
-			     unsigned int key_len)
-{
-	struct aesbs_cbc_ctx *ctx = crypto_tfm_ctx(tfm);
-	int bits = key_len * 8;
-
-	if (private_AES_set_encrypt_key(in_key, bits, &ctx->enc)) {
-		tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
-		return -EINVAL;
-	}
-	ctx->dec.rk = ctx->enc;
-	private_AES_set_decrypt_key(in_key, bits, &ctx->dec.rk);
-	ctx->dec.converted = 0;
-	return 0;
-}
-
-static int aesbs_ctr_set_key(struct crypto_tfm *tfm, const u8 *in_key,
-			     unsigned int key_len)
-{
-	struct aesbs_ctr_ctx *ctx = crypto_tfm_ctx(tfm);
-	int bits = key_len * 8;
-
-	if (private_AES_set_encrypt_key(in_key, bits, &ctx->enc.rk)) {
-		tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
-		return -EINVAL;
-	}
-	ctx->enc.converted = 0;
-	return 0;
-}
-
-static int aesbs_xts_set_key(struct crypto_tfm *tfm, const u8 *in_key,
-			     unsigned int key_len)
-{
-	struct aesbs_xts_ctx *ctx = crypto_tfm_ctx(tfm);
-	int bits = key_len * 4;
-	int err;
-
-	err = xts_check_key(tfm, in_key, key_len);
-	if (err)
-		return err;
-
-	if (private_AES_set_encrypt_key(in_key, bits, &ctx->enc.rk)) {
-		tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
-		return -EINVAL;
-	}
-	ctx->dec.rk = ctx->enc.rk;
-	private_AES_set_decrypt_key(in_key, bits, &ctx->dec.rk);
-	private_AES_set_encrypt_key(in_key + key_len / 2, bits, &ctx->twkey);
-	ctx->enc.converted = ctx->dec.converted = 0;
-	return 0;
-}
-
-static int aesbs_cbc_encrypt(struct blkcipher_desc *desc,
-			     struct scatterlist *dst,
-			     struct scatterlist *src, unsigned int nbytes)
-{
-	struct aesbs_cbc_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
-	struct blkcipher_walk walk;
-	int err;
-
-	blkcipher_walk_init(&walk, dst, src, nbytes);
-	err = blkcipher_walk_virt(desc, &walk);
-
-	while (walk.nbytes) {
-		u32 blocks = walk.nbytes / AES_BLOCK_SIZE;
-		u8 *src = walk.src.virt.addr;
-
-		if (walk.dst.virt.addr == walk.src.virt.addr) {
-			u8 *iv = walk.iv;
-
-			do {
-				crypto_xor(src, iv, AES_BLOCK_SIZE);
-				AES_encrypt(src, src, &ctx->enc);
-				iv = src;
-				src += AES_BLOCK_SIZE;
-			} while (--blocks);
-			memcpy(walk.iv, iv, AES_BLOCK_SIZE);
-		} else {
-			u8 *dst = walk.dst.virt.addr;
-
-			do {
-				crypto_xor(walk.iv, src, AES_BLOCK_SIZE);
-				AES_encrypt(walk.iv, dst, &ctx->enc);
-				memcpy(walk.iv, dst, AES_BLOCK_SIZE);
-				src += AES_BLOCK_SIZE;
-				dst += AES_BLOCK_SIZE;
-			} while (--blocks);
-		}
-		err = blkcipher_walk_done(desc, &walk, walk.nbytes % AES_BLOCK_SIZE);
-	}
-	return err;
-}
-
-static int aesbs_cbc_decrypt(struct blkcipher_desc *desc,
-			     struct scatterlist *dst,
-			     struct scatterlist *src, unsigned int nbytes)
-{
-	struct aesbs_cbc_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
-	struct blkcipher_walk walk;
-	int err;
-
-	blkcipher_walk_init(&walk, dst, src, nbytes);
-	err = blkcipher_walk_virt_block(desc, &walk, 8 * AES_BLOCK_SIZE);
-
-	while ((walk.nbytes / AES_BLOCK_SIZE) >= 8) {
-		kernel_neon_begin();
-		bsaes_cbc_encrypt(walk.src.virt.addr, walk.dst.virt.addr,
-				  walk.nbytes, &ctx->dec, walk.iv);
-		kernel_neon_end();
-		err = blkcipher_walk_done(desc, &walk, walk.nbytes % AES_BLOCK_SIZE);
-	}
-	while (walk.nbytes) {
-		u32 blocks = walk.nbytes / AES_BLOCK_SIZE;
-		u8 *dst = walk.dst.virt.addr;
-		u8 *src = walk.src.virt.addr;
-		u8 bk[2][AES_BLOCK_SIZE];
-		u8 *iv = walk.iv;
-
-		do {
-			if (walk.dst.virt.addr == walk.src.virt.addr)
-				memcpy(bk[blocks & 1], src, AES_BLOCK_SIZE);
-
-			AES_decrypt(src, dst, &ctx->dec.rk);
-			crypto_xor(dst, iv, AES_BLOCK_SIZE);
-
-			if (walk.dst.virt.addr == walk.src.virt.addr)
-				iv = bk[blocks & 1];
-			else
-				iv = src;
-
-			dst += AES_BLOCK_SIZE;
-			src += AES_BLOCK_SIZE;
-		} while (--blocks);
-		err = blkcipher_walk_done(desc, &walk, walk.nbytes % AES_BLOCK_SIZE);
-	}
-	return err;
-}
-
-static void inc_be128_ctr(__be32 ctr[], u32 addend)
-{
-	int i;
-
-	for (i = 3; i >= 0; i--, addend = 1) {
-		u32 n = be32_to_cpu(ctr[i]) + addend;
-
-		ctr[i] = cpu_to_be32(n);
-		if (n >= addend)
-			break;
-	}
-}
-
-static int aesbs_ctr_encrypt(struct blkcipher_desc *desc,
-			     struct scatterlist *dst, struct scatterlist *src,
-			     unsigned int nbytes)
-{
-	struct aesbs_ctr_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
-	struct blkcipher_walk walk;
-	u32 blocks;
-	int err;
-
-	blkcipher_walk_init(&walk, dst, src, nbytes);
-	err = blkcipher_walk_virt_block(desc, &walk, 8 * AES_BLOCK_SIZE);
-
-	while ((blocks = walk.nbytes / AES_BLOCK_SIZE)) {
-		u32 tail = walk.nbytes % AES_BLOCK_SIZE;
-		__be32 *ctr = (__be32 *)walk.iv;
-		u32 headroom = UINT_MAX - be32_to_cpu(ctr[3]);
-
-		/* avoid 32 bit counter overflow in the NEON code */
-		if (unlikely(headroom < blocks)) {
-			blocks = headroom + 1;
-			tail = walk.nbytes - blocks * AES_BLOCK_SIZE;
-		}
-		kernel_neon_begin();
-		bsaes_ctr32_encrypt_blocks(walk.src.virt.addr,
-					   walk.dst.virt.addr, blocks,
-					   &ctx->enc, walk.iv);
-		kernel_neon_end();
-		inc_be128_ctr(ctr, blocks);
-
-		nbytes -= blocks * AES_BLOCK_SIZE;
-		if (nbytes && nbytes == tail && nbytes <= AES_BLOCK_SIZE)
-			break;
-
-		err = blkcipher_walk_done(desc, &walk, tail);
-	}
-	if (walk.nbytes) {
-		u8 *tdst = walk.dst.virt.addr + blocks * AES_BLOCK_SIZE;
-		u8 *tsrc = walk.src.virt.addr + blocks * AES_BLOCK_SIZE;
-		u8 ks[AES_BLOCK_SIZE];
-
-		AES_encrypt(walk.iv, ks, &ctx->enc.rk);
-		if (tdst != tsrc)
-			memcpy(tdst, tsrc, nbytes);
-		crypto_xor(tdst, ks, nbytes);
-		err = blkcipher_walk_done(desc, &walk, 0);
-	}
-	return err;
-}
-
-static int aesbs_xts_encrypt(struct blkcipher_desc *desc,
-			     struct scatterlist *dst,
-			     struct scatterlist *src, unsigned int nbytes)
-{
-	struct aesbs_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
-	struct blkcipher_walk walk;
-	int err;
-
-	blkcipher_walk_init(&walk, dst, src, nbytes);
-	err = blkcipher_walk_virt_block(desc, &walk, 8 * AES_BLOCK_SIZE);
-
-	/* generate the initial tweak */
-	AES_encrypt(walk.iv, walk.iv, &ctx->twkey);
-
-	while (walk.nbytes) {
-		kernel_neon_begin();
-		bsaes_xts_encrypt(walk.src.virt.addr, walk.dst.virt.addr,
-				  walk.nbytes, &ctx->enc, walk.iv);
-		kernel_neon_end();
-		err = blkcipher_walk_done(desc, &walk, walk.nbytes % AES_BLOCK_SIZE);
-	}
-	return err;
-}
-
-static int aesbs_xts_decrypt(struct blkcipher_desc *desc,
-			     struct scatterlist *dst,
-			     struct scatterlist *src, unsigned int nbytes)
-{
-	struct aesbs_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
-	struct blkcipher_walk walk;
-	int err;
-
-	blkcipher_walk_init(&walk, dst, src, nbytes);
-	err = blkcipher_walk_virt_block(desc, &walk, 8 * AES_BLOCK_SIZE);
-
-	/* generate the initial tweak */
-	AES_encrypt(walk.iv, walk.iv, &ctx->twkey);
-
-	while (walk.nbytes) {
-		kernel_neon_begin();
-		bsaes_xts_decrypt(walk.src.virt.addr, walk.dst.virt.addr,
-				  walk.nbytes, &ctx->dec, walk.iv);
-		kernel_neon_end();
-		err = blkcipher_walk_done(desc, &walk, walk.nbytes % AES_BLOCK_SIZE);
-	}
-	return err;
-}
-
-static struct crypto_alg aesbs_algs[] = { {
-	.cra_name		= "__cbc-aes-neonbs",
-	.cra_driver_name	= "__driver-cbc-aes-neonbs",
-	.cra_priority		= 0,
-	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER |
-				  CRYPTO_ALG_INTERNAL,
-	.cra_blocksize		= AES_BLOCK_SIZE,
-	.cra_ctxsize		= sizeof(struct aesbs_cbc_ctx),
-	.cra_alignmask		= 7,
-	.cra_type		= &crypto_blkcipher_type,
-	.cra_module		= THIS_MODULE,
-	.cra_blkcipher = {
-		.min_keysize	= AES_MIN_KEY_SIZE,
-		.max_keysize	= AES_MAX_KEY_SIZE,
-		.ivsize		= AES_BLOCK_SIZE,
-		.setkey		= aesbs_cbc_set_key,
-		.encrypt	= aesbs_cbc_encrypt,
-		.decrypt	= aesbs_cbc_decrypt,
-	},
-}, {
-	.cra_name		= "__ctr-aes-neonbs",
-	.cra_driver_name	= "__driver-ctr-aes-neonbs",
-	.cra_priority		= 0,
-	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER |
-				  CRYPTO_ALG_INTERNAL,
-	.cra_blocksize		= 1,
-	.cra_ctxsize		= sizeof(struct aesbs_ctr_ctx),
-	.cra_alignmask		= 7,
-	.cra_type		= &crypto_blkcipher_type,
-	.cra_module		= THIS_MODULE,
-	.cra_blkcipher = {
-		.min_keysize	= AES_MIN_KEY_SIZE,
-		.max_keysize	= AES_MAX_KEY_SIZE,
-		.ivsize		= AES_BLOCK_SIZE,
-		.setkey		= aesbs_ctr_set_key,
-		.encrypt	= aesbs_ctr_encrypt,
-		.decrypt	= aesbs_ctr_encrypt,
-	},
-}, {
-	.cra_name		= "__xts-aes-neonbs",
-	.cra_driver_name	= "__driver-xts-aes-neonbs",
-	.cra_priority		= 0,
-	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER |
-				  CRYPTO_ALG_INTERNAL,
-	.cra_blocksize		= AES_BLOCK_SIZE,
-	.cra_ctxsize		= sizeof(struct aesbs_xts_ctx),
-	.cra_alignmask		= 7,
-	.cra_type		= &crypto_blkcipher_type,
-	.cra_module		= THIS_MODULE,
-	.cra_blkcipher = {
-		.min_keysize	= 2 * AES_MIN_KEY_SIZE,
-		.max_keysize	= 2 * AES_MAX_KEY_SIZE,
-		.ivsize		= AES_BLOCK_SIZE,
-		.setkey		= aesbs_xts_set_key,
-		.encrypt	= aesbs_xts_encrypt,
-		.decrypt	= aesbs_xts_decrypt,
-	},
-}, {
-	.cra_name		= "cbc(aes)",
-	.cra_driver_name	= "cbc-aes-neonbs",
-	.cra_priority		= 300,
-	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER|CRYPTO_ALG_ASYNC,
-	.cra_blocksize		= AES_BLOCK_SIZE,
-	.cra_ctxsize		= sizeof(struct async_helper_ctx),
-	.cra_alignmask		= 7,
-	.cra_type		= &crypto_ablkcipher_type,
-	.cra_module		= THIS_MODULE,
-	.cra_init		= ablk_init,
-	.cra_exit		= ablk_exit,
-	.cra_ablkcipher = {
-		.min_keysize	= AES_MIN_KEY_SIZE,
-		.max_keysize	= AES_MAX_KEY_SIZE,
-		.ivsize		= AES_BLOCK_SIZE,
-		.setkey		= ablk_set_key,
-		.encrypt	= __ablk_encrypt,
-		.decrypt	= ablk_decrypt,
-	}
-}, {
-	.cra_name		= "ctr(aes)",
-	.cra_driver_name	= "ctr-aes-neonbs",
-	.cra_priority		= 300,
-	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER|CRYPTO_ALG_ASYNC,
-	.cra_blocksize		= 1,
-	.cra_ctxsize		= sizeof(struct async_helper_ctx),
-	.cra_alignmask		= 7,
-	.cra_type		= &crypto_ablkcipher_type,
-	.cra_module		= THIS_MODULE,
-	.cra_init		= ablk_init,
-	.cra_exit		= ablk_exit,
-	.cra_ablkcipher = {
-		.min_keysize	= AES_MIN_KEY_SIZE,
-		.max_keysize	= AES_MAX_KEY_SIZE,
-		.ivsize		= AES_BLOCK_SIZE,
-		.setkey		= ablk_set_key,
-		.encrypt	= ablk_encrypt,
-		.decrypt	= ablk_decrypt,
-	}
-}, {
-	.cra_name		= "xts(aes)",
-	.cra_driver_name	= "xts-aes-neonbs",
-	.cra_priority		= 300,
-	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER|CRYPTO_ALG_ASYNC,
-	.cra_blocksize		= AES_BLOCK_SIZE,
-	.cra_ctxsize		= sizeof(struct async_helper_ctx),
-	.cra_alignmask		= 7,
-	.cra_type		= &crypto_ablkcipher_type,
-	.cra_module		= THIS_MODULE,
-	.cra_init		= ablk_init,
-	.cra_exit		= ablk_exit,
-	.cra_ablkcipher = {
-		.min_keysize	= 2 * AES_MIN_KEY_SIZE,
-		.max_keysize	= 2 * AES_MAX_KEY_SIZE,
-		.ivsize		= AES_BLOCK_SIZE,
-		.setkey		= ablk_set_key,
-		.encrypt	= ablk_encrypt,
-		.decrypt	= ablk_decrypt,
-	}
-} };
-
-static int __init aesbs_mod_init(void)
-{
-	if (!cpu_has_neon())
-		return -ENODEV;
-
-	return crypto_register_algs(aesbs_algs, ARRAY_SIZE(aesbs_algs));
-}
-
-static void __exit aesbs_mod_exit(void)
-{
-	crypto_unregister_algs(aesbs_algs, ARRAY_SIZE(aesbs_algs));
-}
-
-module_init(aesbs_mod_init);
-module_exit(aesbs_mod_exit);
-
-MODULE_DESCRIPTION("Bit sliced AES in CBC/CTR/XTS modes using NEON");
-MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
-MODULE_LICENSE("GPL");