diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile
index 565e82b..5bacb4a 100644
--- a/arch/x86/crypto/Makefile
+++ b/arch/x86/crypto/Makefile
@@ -13,6 +13,7 @@
 obj-$(CONFIG_CRYPTO_AES_X86_64) += aes-x86_64.o
 obj-$(CONFIG_CRYPTO_CAMELLIA_X86_64) += camellia-x86_64.o
 obj-$(CONFIG_CRYPTO_CAST5_AVX_X86_64) += cast5-avx-x86_64.o
+obj-$(CONFIG_CRYPTO_CAST6_AVX_X86_64) += cast6-avx-x86_64.o
 obj-$(CONFIG_CRYPTO_BLOWFISH_X86_64) += blowfish-x86_64.o
 obj-$(CONFIG_CRYPTO_TWOFISH_X86_64) += twofish-x86_64.o
 obj-$(CONFIG_CRYPTO_TWOFISH_X86_64_3WAY) += twofish-x86_64-3way.o
@@ -34,6 +35,7 @@
 aes-x86_64-y := aes-x86_64-asm_64.o aes_glue.o
 camellia-x86_64-y := camellia-x86_64-asm_64.o camellia_glue.o
 cast5-avx-x86_64-y := cast5-avx-x86_64-asm_64.o cast5_avx_glue.o
+cast6-avx-x86_64-y := cast6-avx-x86_64-asm_64.o cast6_avx_glue.o
 blowfish-x86_64-y := blowfish-x86_64-asm_64.o blowfish_glue.o
 twofish-x86_64-y := twofish-x86_64-asm_64.o twofish_glue.o
 twofish-x86_64-3way-y := twofish-x86_64-asm_64-3way.o twofish_glue_3way.o
diff --git a/arch/x86/crypto/cast6-avx-x86_64-asm_64.S b/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
new file mode 100644
index 0000000..d258ce0
--- /dev/null
+++ b/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
@@ -0,0 +1,335 @@
+/*
+ * Cast6 Cipher 8-way parallel algorithm (AVX/x86_64)
+ *
+ * Copyright (C) 2012 Johannes Goetzfried
+ *     <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
+ * USA
+ *
+ */
+
+.file "cast6-avx-x86_64-asm_64.S"
+.text
+
+.extern cast6_s1
+.extern cast6_s2
+.extern cast6_s3
+.extern cast6_s4
+
+/* structure of crypto context */
+#define km	0
+#define kr	(12*4*4)
+
+/* s-boxes */
+#define s1	cast6_s1
+#define s2	cast6_s2
+#define s3	cast6_s3
+#define s4	cast6_s4
+
+/**********************************************************************
+  8-way AVX cast6
+ **********************************************************************/
+#define CTX %rdi
+
+#define RA1 %xmm0
+#define RB1 %xmm1
+#define RC1 %xmm2
+#define RD1 %xmm3
+
+#define RA2 %xmm4
+#define RB2 %xmm5
+#define RC2 %xmm6
+#define RD2 %xmm7
+
+#define RX %xmm8
+
+#define RKM  %xmm9
+#define RKRF %xmm10
+#define RKRR %xmm11
+
+#define RTMP  %xmm12
+#define RMASK %xmm13
+#define R32   %xmm14
+
+#define RID1  %rax
+#define RID1b %al
+#define RID2  %rbx
+#define RID2b %bl
+
+#define RGI1   %rdx
+#define RGI1bl %dl
+#define RGI1bh %dh
+#define RGI2   %rcx
+#define RGI2bl %cl
+#define RGI2bh %ch
+
+#define RFS1  %r8
+#define RFS1d %r8d
+#define RFS2  %r9
+#define RFS2d %r9d
+#define RFS3  %r10
+#define RFS3d %r10d
+
+
+#define lookup_32bit(src, dst, op1, op2, op3) \
+	movb		src ## bl,     RID1b;    \
+	movb		src ## bh,     RID2b;    \
+	movl		s1(, RID1, 4), dst ## d; \
+	op1		s2(, RID2, 4), dst ## d; \
+	shrq $16,	src;                     \
+	movb		src ## bl,     RID1b;    \
+	movb		src ## bh,     RID2b;    \
+	op2		s3(, RID1, 4), dst ## d; \
+	op3		s4(, RID2, 4), dst ## d;
+
+#define F(a, x, op0, op1, op2, op3) \
+	op0	a,	RKM,  x;                 \
+	vpslld  RKRF,	x,    RTMP;              \
+	vpsrld  RKRR,	x,    x;                 \
+	vpor	RTMP,	x,    x;                 \
+	\
+	vpshufb	RMASK,	x,    x;                 \
+	vmovq		x,    RGI1;              \
+	vpsrldq $8,	x,    x;                 \
+	vmovq		x,    RGI2;              \
+	\
+	lookup_32bit(RGI1, RFS1, op1, op2, op3); \
+	shrq $16,	RGI1;                    \
+	lookup_32bit(RGI1, RFS2, op1, op2, op3); \
+	shlq $32,	RFS2;                    \
+	orq		RFS1, RFS2;              \
+	\
+	lookup_32bit(RGI2, RFS1, op1, op2, op3); \
+	shrq $16,	RGI2;                    \
+	lookup_32bit(RGI2, RFS3, op1, op2, op3); \
+	shlq $32,	RFS3;                    \
+	orq		RFS1, RFS3;              \
+	\
+	vmovq		RFS2, x;                 \
+	vpinsrq $1,	RFS3, x, x;
+
+#define F1(b, x) F(b, x, vpaddd, xorl, subl, addl)
+#define F2(b, x) F(b, x, vpxor,  subl, addl, xorl)
+#define F3(b, x) F(b, x, vpsubd, addl, xorl, subl)
+
+#define qop(in, out, x, f) \
+	F ## f(in ## 1, x);          \
+	vpxor out ## 1, x, out ## 1; \
+	F ## f(in ## 2, x);          \
+	vpxor out ## 2, x, out ## 2; \
+
+#define Q(n) \
+	vbroadcastss	(km+(4*(4*n+0)))(CTX), RKM;        \
+	vpinsrb $0,	(kr+(4*n+0))(CTX),     RKRF, RKRF; \
+	vpsubq		RKRF,                  R32,  RKRR; \
+	qop(RD, RC, RX, 1);                                \
+	\
+	vbroadcastss	(km+(4*(4*n+1)))(CTX), RKM;        \
+	vpinsrb $0,	(kr+(4*n+1))(CTX),     RKRF, RKRF; \
+	vpsubq		RKRF,                  R32,  RKRR; \
+	qop(RC, RB, RX, 2);                                \
+	\
+	vbroadcastss	(km+(4*(4*n+2)))(CTX), RKM;        \
+	vpinsrb $0,	(kr+(4*n+2))(CTX),     RKRF, RKRF; \
+	vpsubq		RKRF,                  R32,  RKRR; \
+	qop(RB, RA, RX, 3);                                \
+	\
+	vbroadcastss	(km+(4*(4*n+3)))(CTX), RKM;        \
+	vpinsrb $0,	(kr+(4*n+3))(CTX),     RKRF, RKRF; \
+	vpsubq		RKRF,                  R32,  RKRR; \
+	qop(RA, RD, RX, 1);
+
+#define QBAR(n) \
+	vbroadcastss	(km+(4*(4*n+3)))(CTX), RKM;        \
+	vpinsrb $0,	(kr+(4*n+3))(CTX),     RKRF, RKRF; \
+	vpsubq		RKRF,                  R32,  RKRR; \
+	qop(RA, RD, RX, 1);                                \
+	\
+	vbroadcastss	(km+(4*(4*n+2)))(CTX), RKM;        \
+	vpinsrb $0,	(kr+(4*n+2))(CTX),     RKRF, RKRF; \
+	vpsubq		RKRF,                  R32,  RKRR; \
+	qop(RB, RA, RX, 3);                                \
+	\
+	vbroadcastss	(km+(4*(4*n+1)))(CTX), RKM;        \
+	vpinsrb $0,	(kr+(4*n+1))(CTX),     RKRF, RKRF; \
+	vpsubq		RKRF,                  R32,  RKRR; \
+	qop(RC, RB, RX, 2);                                \
+	\
+	vbroadcastss	(km+(4*(4*n+0)))(CTX), RKM;        \
+	vpinsrb $0,	(kr+(4*n+0))(CTX),     RKRF, RKRF; \
+	vpsubq		RKRF,                  R32,  RKRR; \
+	qop(RD, RC, RX, 1);
+
+
+#define transpose_4x4(x0, x1, x2, x3, t0, t1, t2) \
+	vpunpckldq		x1, x0, t0; \
+	vpunpckhdq		x1, x0, t2; \
+	vpunpckldq		x3, x2, t1; \
+	vpunpckhdq		x3, x2, x3; \
+	\
+	vpunpcklqdq		t1, t0, x0; \
+	vpunpckhqdq		t1, t0, x1; \
+	vpunpcklqdq		x3, t2, x2; \
+	vpunpckhqdq		x3, t2, x3;
+
+#define inpack_blocks(in, x0, x1, x2, x3, t0, t1, t2) \
+	vmovdqu (0*4*4)(in),	x0; \
+	vmovdqu (1*4*4)(in),	x1; \
+	vmovdqu (2*4*4)(in),	x2; \
+	vmovdqu (3*4*4)(in),	x3; \
+	vpshufb RMASK, x0,	x0; \
+	vpshufb RMASK, x1,	x1; \
+	vpshufb RMASK, x2,	x2; \
+	vpshufb RMASK, x3,	x3; \
+	\
+	transpose_4x4(x0, x1, x2, x3, t0, t1, t2)
+
+#define outunpack_blocks(out, x0, x1, x2, x3, t0, t1, t2) \
+	transpose_4x4(x0, x1, x2, x3, t0, t1, t2) \
+	\
+	vpshufb RMASK,		x0, x0;       \
+	vpshufb RMASK,		x1, x1;       \
+	vpshufb RMASK,		x2, x2;       \
+	vpshufb RMASK,		x3, x3;       \
+	vmovdqu x0,		(0*4*4)(out); \
+	vmovdqu	x1,		(1*4*4)(out); \
+	vmovdqu	x2,		(2*4*4)(out); \
+	vmovdqu	x3,		(3*4*4)(out);
+
+#define outunpack_xor_blocks(out, x0, x1, x2, x3, t0, t1, t2) \
+	transpose_4x4(x0, x1, x2, x3, t0, t1, t2) \
+	\
+	vpshufb RMASK,		x0, x0;       \
+	vpshufb RMASK,		x1, x1;       \
+	vpshufb RMASK,		x2, x2;       \
+	vpshufb RMASK,		x3, x3;       \
+	vpxor (0*4*4)(out),	x0, x0;       \
+	vmovdqu	x0,		(0*4*4)(out); \
+	vpxor (1*4*4)(out),	x1, x1;       \
+	vmovdqu	x1,		(1*4*4)(out); \
+	vpxor (2*4*4)(out),	x2, x2;       \
+	vmovdqu x2,		(2*4*4)(out); \
+	vpxor (3*4*4)(out),	x3, x3;       \
+	vmovdqu x3,		(3*4*4)(out);
+
+.align 16
+.Lbswap_mask:
+	.byte 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12
+.L32_mask:
+	.byte 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ,0, 0, 0, 0, 0
+
+.align 16
+.global __cast6_enc_blk_8way
+.type   __cast6_enc_blk_8way,@function;
+
+__cast6_enc_blk_8way:
+	/* input:
+	 *	%rdi: ctx, CTX
+	 *	%rsi: dst
+	 *	%rdx: src
+	 *	%rcx: bool, if true: xor output
+	 */
+
+	pushq %rbx;
+	pushq %rcx;
+
+	vmovdqu .Lbswap_mask, RMASK;
+	vmovdqu .L32_mask, R32;
+	vpxor RKRF, RKRF, RKRF;
+
+	leaq (4*4*4)(%rdx), %rax;
+	inpack_blocks(%rdx, RA1, RB1, RC1, RD1, RTMP, RX, RKM);
+	inpack_blocks(%rax, RA2, RB2, RC2, RD2, RTMP, RX, RKM);
+
+	xorq RID1, RID1;
+	xorq RID2, RID2;
+
+	Q(0);
+	Q(1);
+	Q(2);
+	Q(3);
+	Q(4);
+	Q(5);
+	QBAR(6);
+	QBAR(7);
+	QBAR(8);
+	QBAR(9);
+	QBAR(10);
+	QBAR(11);
+
+	popq %rcx;
+	popq %rbx;
+
+	leaq (4*4*4)(%rsi), %rax;
+
+	testb %cl, %cl;
+	jnz __enc_xor8;
+
+	outunpack_blocks(%rsi, RA1, RB1, RC1, RD1, RTMP, RX, RKM);
+	outunpack_blocks(%rax, RA2, RB2, RC2, RD2, RTMP, RX, RKM);
+
+	ret;
+
+__enc_xor8:
+	outunpack_xor_blocks(%rsi, RA1, RB1, RC1, RD1, RTMP, RX, RKM);
+	outunpack_xor_blocks(%rax, RA2, RB2, RC2, RD2, RTMP, RX, RKM);
+
+	ret;
+
+.align 16
+.global cast6_dec_blk_8way
+.type   cast6_dec_blk_8way,@function;
+
+cast6_dec_blk_8way:
+	/* input:
+	 *	%rdi: ctx, CTX
+	 *	%rsi: dst
+	 *	%rdx: src
+	 */
+
+	pushq %rbx;
+
+	vmovdqu .Lbswap_mask, RMASK;
+	vmovdqu .L32_mask, R32;
+	vpxor RKRF, RKRF, RKRF;
+
+	leaq (4*4*4)(%rdx), %rax;
+	inpack_blocks(%rdx, RA1, RB1, RC1, RD1, RTMP, RX, RKM);
+	inpack_blocks(%rax, RA2, RB2, RC2, RD2, RTMP, RX, RKM);
+
+	xorq RID1, RID1;
+	xorq RID2, RID2;
+
+	Q(11);
+	Q(10);
+	Q(9);
+	Q(8);
+	Q(7);
+	Q(6);
+	QBAR(5);
+	QBAR(4);
+	QBAR(3);
+	QBAR(2);
+	QBAR(1);
+	QBAR(0);
+
+	popq %rbx;
+
+	leaq (4*4*4)(%rsi), %rax;
+	outunpack_blocks(%rsi, RA1, RB1, RC1, RD1, RTMP, RX, RKM);
+	outunpack_blocks(%rax, RA2, RB2, RC2, RD2, RTMP, RX, RKM);
+
+	ret;
diff --git a/arch/x86/crypto/cast6_avx_glue.c b/arch/x86/crypto/cast6_avx_glue.c
new file mode 100644
index 0000000..15e5f85
--- /dev/null
+++ b/arch/x86/crypto/cast6_avx_glue.c
@@ -0,0 +1,648 @@
+/*
+ * Glue Code for the AVX assembler implemention of the Cast6 Cipher
+ *
+ * Copyright (C) 2012 Johannes Goetzfried
+ *     <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
+ * USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/hardirq.h>
+#include <linux/types.h>
+#include <linux/crypto.h>
+#include <linux/err.h>
+#include <crypto/algapi.h>
+#include <crypto/cast6.h>
+#include <crypto/cryptd.h>
+#include <crypto/b128ops.h>
+#include <crypto/ctr.h>
+#include <crypto/lrw.h>
+#include <crypto/xts.h>
+#include <asm/xcr.h>
+#include <asm/xsave.h>
+#include <asm/crypto/ablk_helper.h>
+#include <asm/crypto/glue_helper.h>
+
+#define CAST6_PARALLEL_BLOCKS 8
+
+asmlinkage void __cast6_enc_blk_8way(struct cast6_ctx *ctx, u8 *dst,
+				     const u8 *src, bool xor);
+asmlinkage void cast6_dec_blk_8way(struct cast6_ctx *ctx, u8 *dst,
+				   const u8 *src);
+
+static inline void cast6_enc_blk_xway(struct cast6_ctx *ctx, u8 *dst,
+				      const u8 *src)
+{
+	__cast6_enc_blk_8way(ctx, dst, src, false);
+}
+
+static inline void cast6_enc_blk_xway_xor(struct cast6_ctx *ctx, u8 *dst,
+					  const u8 *src)
+{
+	__cast6_enc_blk_8way(ctx, dst, src, true);
+}
+
+static inline void cast6_dec_blk_xway(struct cast6_ctx *ctx, u8 *dst,
+				      const u8 *src)
+{
+	cast6_dec_blk_8way(ctx, dst, src);
+}
+
+
+static void cast6_decrypt_cbc_xway(void *ctx, u128 *dst, const u128 *src)
+{
+	u128 ivs[CAST6_PARALLEL_BLOCKS - 1];
+	unsigned int j;
+
+	for (j = 0; j < CAST6_PARALLEL_BLOCKS - 1; j++)
+		ivs[j] = src[j];
+
+	cast6_dec_blk_xway(ctx, (u8 *)dst, (u8 *)src);
+
+	for (j = 0; j < CAST6_PARALLEL_BLOCKS - 1; j++)
+		u128_xor(dst + (j + 1), dst + (j + 1), ivs + j);
+}
+
+static void cast6_crypt_ctr(void *ctx, u128 *dst, const u128 *src, u128 *iv)
+{
+	be128 ctrblk;
+
+	u128_to_be128(&ctrblk, iv);
+	u128_inc(iv);
+
+	__cast6_encrypt(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk);
+	u128_xor(dst, src, (u128 *)&ctrblk);
+}
+
+static void cast6_crypt_ctr_xway(void *ctx, u128 *dst, const u128 *src,
+				   u128 *iv)
+{
+	be128 ctrblks[CAST6_PARALLEL_BLOCKS];
+	unsigned int i;
+
+	for (i = 0; i < CAST6_PARALLEL_BLOCKS; i++) {
+		if (dst != src)
+			dst[i] = src[i];
+
+		u128_to_be128(&ctrblks[i], iv);
+		u128_inc(iv);
+	}
+
+	cast6_enc_blk_xway_xor(ctx, (u8 *)dst, (u8 *)ctrblks);
+}
+
+static const struct common_glue_ctx cast6_enc = {
+	.num_funcs = 2,
+	.fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
+
+	.funcs = { {
+		.num_blocks = CAST6_PARALLEL_BLOCKS,
+		.fn_u = { .ecb = GLUE_FUNC_CAST(cast6_enc_blk_xway) }
+	}, {
+		.num_blocks = 1,
+		.fn_u = { .ecb = GLUE_FUNC_CAST(__cast6_encrypt) }
+	} }
+};
+
+static const struct common_glue_ctx cast6_ctr = {
+	.num_funcs = 2,
+	.fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
+
+	.funcs = { {
+		.num_blocks = CAST6_PARALLEL_BLOCKS,
+		.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(cast6_crypt_ctr_xway) }
+	}, {
+		.num_blocks = 1,
+		.fn_u = { .ctr = GLUE_CTR_FUNC_CAST(cast6_crypt_ctr) }
+	} }
+};
+
+static const struct common_glue_ctx cast6_dec = {
+	.num_funcs = 2,
+	.fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
+
+	.funcs = { {
+		.num_blocks = CAST6_PARALLEL_BLOCKS,
+		.fn_u = { .ecb = GLUE_FUNC_CAST(cast6_dec_blk_xway) }
+	}, {
+		.num_blocks = 1,
+		.fn_u = { .ecb = GLUE_FUNC_CAST(__cast6_decrypt) }
+	} }
+};
+
+static const struct common_glue_ctx cast6_dec_cbc = {
+	.num_funcs = 2,
+	.fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
+
+	.funcs = { {
+		.num_blocks = CAST6_PARALLEL_BLOCKS,
+		.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(cast6_decrypt_cbc_xway) }
+	}, {
+		.num_blocks = 1,
+		.fn_u = { .cbc = GLUE_CBC_FUNC_CAST(__cast6_decrypt) }
+	} }
+};
+
+static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
+		       struct scatterlist *src, unsigned int nbytes)
+{
+	return glue_ecb_crypt_128bit(&cast6_enc, desc, dst, src, nbytes);
+}
+
+static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
+		       struct scatterlist *src, unsigned int nbytes)
+{
+	return glue_ecb_crypt_128bit(&cast6_dec, desc, dst, src, nbytes);
+}
+
+static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
+		       struct scatterlist *src, unsigned int nbytes)
+{
+	return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(__cast6_encrypt), desc,
+				       dst, src, nbytes);
+}
+
+static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
+		       struct scatterlist *src, unsigned int nbytes)
+{
+	return glue_cbc_decrypt_128bit(&cast6_dec_cbc, desc, dst, src,
+				       nbytes);
+}
+
+static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
+		     struct scatterlist *src, unsigned int nbytes)
+{
+	return glue_ctr_crypt_128bit(&cast6_ctr, desc, dst, src, nbytes);
+}
+
+static inline bool cast6_fpu_begin(bool fpu_enabled, unsigned int nbytes)
+{
+	return glue_fpu_begin(CAST6_BLOCK_SIZE, CAST6_PARALLEL_BLOCKS,
+			      NULL, fpu_enabled, nbytes);
+}
+
+static inline void cast6_fpu_end(bool fpu_enabled)
+{
+	glue_fpu_end(fpu_enabled);
+}
+
+struct crypt_priv {
+	struct cast6_ctx *ctx;
+	bool fpu_enabled;
+};
+
+static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
+{
+	const unsigned int bsize = CAST6_BLOCK_SIZE;
+	struct crypt_priv *ctx = priv;
+	int i;
+
+	ctx->fpu_enabled = cast6_fpu_begin(ctx->fpu_enabled, nbytes);
+
+	if (nbytes == bsize * CAST6_PARALLEL_BLOCKS) {
+		cast6_enc_blk_xway(ctx->ctx, srcdst, srcdst);
+		return;
+	}
+
+	for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
+		__cast6_encrypt(ctx->ctx, srcdst, srcdst);
+}
+
+static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
+{
+	const unsigned int bsize = CAST6_BLOCK_SIZE;
+	struct crypt_priv *ctx = priv;
+	int i;
+
+	ctx->fpu_enabled = cast6_fpu_begin(ctx->fpu_enabled, nbytes);
+
+	if (nbytes == bsize * CAST6_PARALLEL_BLOCKS) {
+		cast6_dec_blk_xway(ctx->ctx, srcdst, srcdst);
+		return;
+	}
+
+	for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
+		__cast6_decrypt(ctx->ctx, srcdst, srcdst);
+}
+
+struct cast6_lrw_ctx {
+	struct lrw_table_ctx lrw_table;
+	struct cast6_ctx cast6_ctx;
+};
+
+static int lrw_cast6_setkey(struct crypto_tfm *tfm, const u8 *key,
+			      unsigned int keylen)
+{
+	struct cast6_lrw_ctx *ctx = crypto_tfm_ctx(tfm);
+	int err;
+
+	err = __cast6_setkey(&ctx->cast6_ctx, key, keylen - CAST6_BLOCK_SIZE,
+			     &tfm->crt_flags);
+	if (err)
+		return err;
+
+	return lrw_init_table(&ctx->lrw_table, key + keylen - CAST6_BLOCK_SIZE);
+}
+
+static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
+		       struct scatterlist *src, unsigned int nbytes)
+{
+	struct cast6_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
+	be128 buf[CAST6_PARALLEL_BLOCKS];
+	struct crypt_priv crypt_ctx = {
+		.ctx = &ctx->cast6_ctx,
+		.fpu_enabled = false,
+	};
+	struct lrw_crypt_req req = {
+		.tbuf = buf,
+		.tbuflen = sizeof(buf),
+
+		.table_ctx = &ctx->lrw_table,
+		.crypt_ctx = &crypt_ctx,
+		.crypt_fn = encrypt_callback,
+	};
+	int ret;
+
+	desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
+	ret = lrw_crypt(desc, dst, src, nbytes, &req);
+	cast6_fpu_end(crypt_ctx.fpu_enabled);
+
+	return ret;
+}
+
+static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
+		       struct scatterlist *src, unsigned int nbytes)
+{
+	struct cast6_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
+	be128 buf[CAST6_PARALLEL_BLOCKS];
+	struct crypt_priv crypt_ctx = {
+		.ctx = &ctx->cast6_ctx,
+		.fpu_enabled = false,
+	};
+	struct lrw_crypt_req req = {
+		.tbuf = buf,
+		.tbuflen = sizeof(buf),
+
+		.table_ctx = &ctx->lrw_table,
+		.crypt_ctx = &crypt_ctx,
+		.crypt_fn = decrypt_callback,
+	};
+	int ret;
+
+	desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
+	ret = lrw_crypt(desc, dst, src, nbytes, &req);
+	cast6_fpu_end(crypt_ctx.fpu_enabled);
+
+	return ret;
+}
+
+static void lrw_exit_tfm(struct crypto_tfm *tfm)
+{
+	struct cast6_lrw_ctx *ctx = crypto_tfm_ctx(tfm);
+
+	lrw_free_table(&ctx->lrw_table);
+}
+
+struct cast6_xts_ctx {
+	struct cast6_ctx tweak_ctx;
+	struct cast6_ctx crypt_ctx;
+};
+
+static int xts_cast6_setkey(struct crypto_tfm *tfm, const u8 *key,
+			      unsigned int keylen)
+{
+	struct cast6_xts_ctx *ctx = crypto_tfm_ctx(tfm);
+	u32 *flags = &tfm->crt_flags;
+	int err;
+
+	/* key consists of keys of equal size concatenated, therefore
+	 * the length must be even
+	 */
+	if (keylen % 2) {
+		*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
+		return -EINVAL;
+	}
+
+	/* first half of xts-key is for crypt */
+	err = __cast6_setkey(&ctx->crypt_ctx, key, keylen / 2, flags);
+	if (err)
+		return err;
+
+	/* second half of xts-key is for tweak */
+	return __cast6_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2,
+			      flags);
+}
+
+static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
+		       struct scatterlist *src, unsigned int nbytes)
+{
+	struct cast6_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
+	be128 buf[CAST6_PARALLEL_BLOCKS];
+	struct crypt_priv crypt_ctx = {
+		.ctx = &ctx->crypt_ctx,
+		.fpu_enabled = false,
+	};
+	struct xts_crypt_req req = {
+		.tbuf = buf,
+		.tbuflen = sizeof(buf),
+
+		.tweak_ctx = &ctx->tweak_ctx,
+		.tweak_fn = XTS_TWEAK_CAST(__cast6_encrypt),
+		.crypt_ctx = &crypt_ctx,
+		.crypt_fn = encrypt_callback,
+	};
+	int ret;
+
+	desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
+	ret = xts_crypt(desc, dst, src, nbytes, &req);
+	cast6_fpu_end(crypt_ctx.fpu_enabled);
+
+	return ret;
+}
+
+static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
+		       struct scatterlist *src, unsigned int nbytes)
+{
+	struct cast6_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
+	be128 buf[CAST6_PARALLEL_BLOCKS];
+	struct crypt_priv crypt_ctx = {
+		.ctx = &ctx->crypt_ctx,
+		.fpu_enabled = false,
+	};
+	struct xts_crypt_req req = {
+		.tbuf = buf,
+		.tbuflen = sizeof(buf),
+
+		.tweak_ctx = &ctx->tweak_ctx,
+		.tweak_fn = XTS_TWEAK_CAST(__cast6_encrypt),
+		.crypt_ctx = &crypt_ctx,
+		.crypt_fn = decrypt_callback,
+	};
+	int ret;
+
+	desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
+	ret = xts_crypt(desc, dst, src, nbytes, &req);
+	cast6_fpu_end(crypt_ctx.fpu_enabled);
+
+	return ret;
+}
+
+static struct crypto_alg cast6_algs[10] = { {
+	.cra_name		= "__ecb-cast6-avx",
+	.cra_driver_name	= "__driver-ecb-cast6-avx",
+	.cra_priority		= 0,
+	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER,
+	.cra_blocksize		= CAST6_BLOCK_SIZE,
+	.cra_ctxsize		= sizeof(struct cast6_ctx),
+	.cra_alignmask		= 0,
+	.cra_type		= &crypto_blkcipher_type,
+	.cra_module		= THIS_MODULE,
+	.cra_u = {
+		.blkcipher = {
+			.min_keysize	= CAST6_MIN_KEY_SIZE,
+			.max_keysize	= CAST6_MAX_KEY_SIZE,
+			.setkey		= cast6_setkey,
+			.encrypt	= ecb_encrypt,
+			.decrypt	= ecb_decrypt,
+		},
+	},
+}, {
+	.cra_name		= "__cbc-cast6-avx",
+	.cra_driver_name	= "__driver-cbc-cast6-avx",
+	.cra_priority		= 0,
+	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER,
+	.cra_blocksize		= CAST6_BLOCK_SIZE,
+	.cra_ctxsize		= sizeof(struct cast6_ctx),
+	.cra_alignmask		= 0,
+	.cra_type		= &crypto_blkcipher_type,
+	.cra_module		= THIS_MODULE,
+	.cra_u = {
+		.blkcipher = {
+			.min_keysize	= CAST6_MIN_KEY_SIZE,
+			.max_keysize	= CAST6_MAX_KEY_SIZE,
+			.setkey		= cast6_setkey,
+			.encrypt	= cbc_encrypt,
+			.decrypt	= cbc_decrypt,
+		},
+	},
+}, {
+	.cra_name		= "__ctr-cast6-avx",
+	.cra_driver_name	= "__driver-ctr-cast6-avx",
+	.cra_priority		= 0,
+	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER,
+	.cra_blocksize		= 1,
+	.cra_ctxsize		= sizeof(struct cast6_ctx),
+	.cra_alignmask		= 0,
+	.cra_type		= &crypto_blkcipher_type,
+	.cra_module		= THIS_MODULE,
+	.cra_u = {
+		.blkcipher = {
+			.min_keysize	= CAST6_MIN_KEY_SIZE,
+			.max_keysize	= CAST6_MAX_KEY_SIZE,
+			.ivsize		= CAST6_BLOCK_SIZE,
+			.setkey		= cast6_setkey,
+			.encrypt	= ctr_crypt,
+			.decrypt	= ctr_crypt,
+		},
+	},
+}, {
+	.cra_name		= "__lrw-cast6-avx",
+	.cra_driver_name	= "__driver-lrw-cast6-avx",
+	.cra_priority		= 0,
+	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER,
+	.cra_blocksize		= CAST6_BLOCK_SIZE,
+	.cra_ctxsize		= sizeof(struct cast6_lrw_ctx),
+	.cra_alignmask		= 0,
+	.cra_type		= &crypto_blkcipher_type,
+	.cra_module		= THIS_MODULE,
+	.cra_exit		= lrw_exit_tfm,
+	.cra_u = {
+		.blkcipher = {
+			.min_keysize	= CAST6_MIN_KEY_SIZE +
+					  CAST6_BLOCK_SIZE,
+			.max_keysize	= CAST6_MAX_KEY_SIZE +
+					  CAST6_BLOCK_SIZE,
+			.ivsize		= CAST6_BLOCK_SIZE,
+			.setkey		= lrw_cast6_setkey,
+			.encrypt	= lrw_encrypt,
+			.decrypt	= lrw_decrypt,
+		},
+	},
+}, {
+	.cra_name		= "__xts-cast6-avx",
+	.cra_driver_name	= "__driver-xts-cast6-avx",
+	.cra_priority		= 0,
+	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER,
+	.cra_blocksize		= CAST6_BLOCK_SIZE,
+	.cra_ctxsize		= sizeof(struct cast6_xts_ctx),
+	.cra_alignmask		= 0,
+	.cra_type		= &crypto_blkcipher_type,
+	.cra_module		= THIS_MODULE,
+	.cra_u = {
+		.blkcipher = {
+			.min_keysize	= CAST6_MIN_KEY_SIZE * 2,
+			.max_keysize	= CAST6_MAX_KEY_SIZE * 2,
+			.ivsize		= CAST6_BLOCK_SIZE,
+			.setkey		= xts_cast6_setkey,
+			.encrypt	= xts_encrypt,
+			.decrypt	= xts_decrypt,
+		},
+	},
+}, {
+	.cra_name		= "ecb(cast6)",
+	.cra_driver_name	= "ecb-cast6-avx",
+	.cra_priority		= 200,
+	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
+	.cra_blocksize		= CAST6_BLOCK_SIZE,
+	.cra_ctxsize		= sizeof(struct async_helper_ctx),
+	.cra_alignmask		= 0,
+	.cra_type		= &crypto_ablkcipher_type,
+	.cra_module		= THIS_MODULE,
+	.cra_init		= ablk_init,
+	.cra_exit		= ablk_exit,
+	.cra_u = {
+		.ablkcipher = {
+			.min_keysize	= CAST6_MIN_KEY_SIZE,
+			.max_keysize	= CAST6_MAX_KEY_SIZE,
+			.setkey		= ablk_set_key,
+			.encrypt	= ablk_encrypt,
+			.decrypt	= ablk_decrypt,
+		},
+	},
+}, {
+	.cra_name		= "cbc(cast6)",
+	.cra_driver_name	= "cbc-cast6-avx",
+	.cra_priority		= 200,
+	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
+	.cra_blocksize		= CAST6_BLOCK_SIZE,
+	.cra_ctxsize		= sizeof(struct async_helper_ctx),
+	.cra_alignmask		= 0,
+	.cra_type		= &crypto_ablkcipher_type,
+	.cra_module		= THIS_MODULE,
+	.cra_init		= ablk_init,
+	.cra_exit		= ablk_exit,
+	.cra_u = {
+		.ablkcipher = {
+			.min_keysize	= CAST6_MIN_KEY_SIZE,
+			.max_keysize	= CAST6_MAX_KEY_SIZE,
+			.ivsize		= CAST6_BLOCK_SIZE,
+			.setkey		= ablk_set_key,
+			.encrypt	= __ablk_encrypt,
+			.decrypt	= ablk_decrypt,
+		},
+	},
+}, {
+	.cra_name		= "ctr(cast6)",
+	.cra_driver_name	= "ctr-cast6-avx",
+	.cra_priority		= 200,
+	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
+	.cra_blocksize		= 1,
+	.cra_ctxsize		= sizeof(struct async_helper_ctx),
+	.cra_alignmask		= 0,
+	.cra_type		= &crypto_ablkcipher_type,
+	.cra_module		= THIS_MODULE,
+	.cra_init		= ablk_init,
+	.cra_exit		= ablk_exit,
+	.cra_u = {
+		.ablkcipher = {
+			.min_keysize	= CAST6_MIN_KEY_SIZE,
+			.max_keysize	= CAST6_MAX_KEY_SIZE,
+			.ivsize		= CAST6_BLOCK_SIZE,
+			.setkey		= ablk_set_key,
+			.encrypt	= ablk_encrypt,
+			.decrypt	= ablk_encrypt,
+			.geniv		= "chainiv",
+		},
+	},
+}, {
+	.cra_name		= "lrw(cast6)",
+	.cra_driver_name	= "lrw-cast6-avx",
+	.cra_priority		= 200,
+	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
+	.cra_blocksize		= CAST6_BLOCK_SIZE,
+	.cra_ctxsize		= sizeof(struct async_helper_ctx),
+	.cra_alignmask		= 0,
+	.cra_type		= &crypto_ablkcipher_type,
+	.cra_module		= THIS_MODULE,
+	.cra_init		= ablk_init,
+	.cra_exit		= ablk_exit,
+	.cra_u = {
+		.ablkcipher = {
+			.min_keysize	= CAST6_MIN_KEY_SIZE +
+					  CAST6_BLOCK_SIZE,
+			.max_keysize	= CAST6_MAX_KEY_SIZE +
+					  CAST6_BLOCK_SIZE,
+			.ivsize		= CAST6_BLOCK_SIZE,
+			.setkey		= ablk_set_key,
+			.encrypt	= ablk_encrypt,
+			.decrypt	= ablk_decrypt,
+		},
+	},
+}, {
+	.cra_name		= "xts(cast6)",
+	.cra_driver_name	= "xts-cast6-avx",
+	.cra_priority		= 200,
+	.cra_flags		= CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
+	.cra_blocksize		= CAST6_BLOCK_SIZE,
+	.cra_ctxsize		= sizeof(struct async_helper_ctx),
+	.cra_alignmask		= 0,
+	.cra_type		= &crypto_ablkcipher_type,
+	.cra_module		= THIS_MODULE,
+	.cra_init		= ablk_init,
+	.cra_exit		= ablk_exit,
+	.cra_u = {
+		.ablkcipher = {
+			.min_keysize	= CAST6_MIN_KEY_SIZE * 2,
+			.max_keysize	= CAST6_MAX_KEY_SIZE * 2,
+			.ivsize		= CAST6_BLOCK_SIZE,
+			.setkey		= ablk_set_key,
+			.encrypt	= ablk_encrypt,
+			.decrypt	= ablk_decrypt,
+		},
+	},
+} };
+
+static int __init cast6_init(void)
+{
+	u64 xcr0;
+
+	if (!cpu_has_avx || !cpu_has_osxsave) {
+		pr_info("AVX instructions are not detected.\n");
+		return -ENODEV;
+	}
+
+	xcr0 = xgetbv(XCR_XFEATURE_ENABLED_MASK);
+	if ((xcr0 & (XSTATE_SSE | XSTATE_YMM)) != (XSTATE_SSE | XSTATE_YMM)) {
+		pr_info("AVX detected but unusable.\n");
+		return -ENODEV;
+	}
+
+	return crypto_register_algs(cast6_algs, ARRAY_SIZE(cast6_algs));
+}
+
+static void __exit cast6_exit(void)
+{
+	crypto_unregister_algs(cast6_algs, ARRAY_SIZE(cast6_algs));
+}
+
+module_init(cast6_init);
+module_exit(cast6_exit);
+
+MODULE_DESCRIPTION("Cast6 Cipher Algorithm, AVX optimized");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("cast6");
diff --git a/crypto/Kconfig b/crypto/Kconfig
index cda97fc..fe8ed62 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -713,6 +713,23 @@
 	  The CAST6 encryption algorithm (synonymous with CAST-256) is
 	  described in RFC2612.
 
+config CRYPTO_CAST6_AVX_X86_64
+	tristate "CAST6 (CAST-256) cipher algorithm (x86_64/AVX)"
+	depends on X86 && 64BIT
+	select CRYPTO_ALGAPI
+	select CRYPTO_CRYPTD
+	select CRYPTO_ABLK_HELPER_X86
+	select CRYPTO_GLUE_HELPER_X86
+	select CRYPTO_CAST6
+	select CRYPTO_LRW
+	select CRYPTO_XTS
+	help
+	  The CAST6 encryption algorithm (synonymous with CAST-256) is
+	  described in RFC2612.
+
+	  This module provides the Cast6 cipher algorithm that processes
+	  eight blocks parallel using the AVX instruction set.
+
 config CRYPTO_DES
 	tristate "DES and Triple DES EDE cipher algorithms"
 	select CRYPTO_ALGAPI
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index cff3c1c..575b57c 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -1549,6 +1549,21 @@
 			}
 		}
 	}, {
+		.alg = "__cbc-cast6-avx",
+		.test = alg_test_null,
+		.suite = {
+			.cipher = {
+				.enc = {
+					.vecs = NULL,
+					.count = 0
+				},
+				.dec = {
+					.vecs = NULL,
+					.count = 0
+				}
+			}
+		}
+	}, {
 		.alg = "__cbc-serpent-avx",
 		.test = alg_test_null,
 		.suite = {
@@ -1625,6 +1640,21 @@
 			}
 		}
 	}, {
+		.alg = "__driver-cbc-cast6-avx",
+		.test = alg_test_null,
+		.suite = {
+			.cipher = {
+				.enc = {
+					.vecs = NULL,
+					.count = 0
+				},
+				.dec = {
+					.vecs = NULL,
+					.count = 0
+				}
+			}
+		}
+	}, {
 		.alg = "__driver-cbc-serpent-avx",
 		.test = alg_test_null,
 		.suite = {
@@ -1701,6 +1731,21 @@
 			}
 		}
 	}, {
+		.alg = "__driver-ecb-cast6-avx",
+		.test = alg_test_null,
+		.suite = {
+			.cipher = {
+				.enc = {
+					.vecs = NULL,
+					.count = 0
+				},
+				.dec = {
+					.vecs = NULL,
+					.count = 0
+				}
+			}
+		}
+	}, {
 		.alg = "__driver-ecb-serpent-avx",
 		.test = alg_test_null,
 		.suite = {
@@ -2027,6 +2072,21 @@
 			}
 		}
 	}, {
+		.alg = "cryptd(__driver-ecb-cast6-avx)",
+		.test = alg_test_null,
+		.suite = {
+			.cipher = {
+				.enc = {
+					.vecs = NULL,
+					.count = 0
+				},
+				.dec = {
+					.vecs = NULL,
+					.count = 0
+				}
+			}
+		}
+	}, {
 		.alg = "cryptd(__driver-ecb-serpent-avx)",
 		.test = alg_test_null,
 		.suite = {