[deliverable/linux.git] / drivers / crypto / marvell / cipher.c

/*
 * Cipher algorithms supported by the CESA: DES, 3DES and AES.
 *
 * Author: Boris Brezillon <boris.brezillon@free-electrons.com>
 * Author: Arnaud Ebalard <arno@natisbad.org>
 *
 * This work is based on an initial version written by
 * Sebastian Andrzej Siewior < sebastian at breakpoint dot cc >
 *
 * 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 <crypto/aes.h>

#include "cesa.h"

struct mv_cesa_aes_ctx {
	struct mv_cesa_ctx base;
	struct crypto_aes_ctx aes;
};

static void mv_cesa_ablkcipher_std_step(struct ablkcipher_request *req)
{
	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
	struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
	struct mv_cesa_engine *engine = sreq->base.engine;
	size_t  len = min_t(size_t, req->nbytes - sreq->offset,
			    CESA_SA_SRAM_PAYLOAD_SIZE);

	len = sg_pcopy_to_buffer(req->src, creq->src_nents,
				 engine->sram + CESA_SA_DATA_SRAM_OFFSET,
				 len, sreq->offset);

	sreq->size = len;
	mv_cesa_set_crypt_op_len(&sreq->op, len);

	/* FIXME: only update enc_len field */
	if (!sreq->skip_ctx) {
		memcpy(engine->sram, &sreq->op, sizeof(sreq->op));
		sreq->skip_ctx = true;
	} else {
		memcpy(engine->sram, &sreq->op, sizeof(sreq->op.desc));
	}

	mv_cesa_set_int_mask(engine, CESA_SA_INT_ACCEL0_DONE);
	writel(CESA_SA_CFG_PARA_DIS, engine->regs + CESA_SA_CFG);
	writel(CESA_SA_CMD_EN_CESA_SA_ACCL0, engine->regs + CESA_SA_CMD);
}

static int mv_cesa_ablkcipher_std_process(struct ablkcipher_request *req,
					  u32 status)
{
	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
	struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
	struct mv_cesa_engine *engine = sreq->base.engine;
	size_t len;

	len = sg_pcopy_from_buffer(req->dst, creq->dst_nents,
				   engine->sram + CESA_SA_DATA_SRAM_OFFSET,
				   sreq->size, sreq->offset);

	sreq->offset += len;
	if (sreq->offset < req->nbytes)
		return -EINPROGRESS;

	return 0;
}

static int mv_cesa_ablkcipher_process(struct crypto_async_request *req,
				      u32 status)
{
	struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
	struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
	struct mv_cesa_engine *engine = sreq->base.engine;
	int ret;

	ret = mv_cesa_ablkcipher_std_process(ablkreq, status);
	if (ret)
		return ret;

	memcpy(ablkreq->info, engine->sram + CESA_SA_CRYPT_IV_SRAM_OFFSET,
	       crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(ablkreq)));

	return 0;
}

static void mv_cesa_ablkcipher_step(struct crypto_async_request *req)
{
	struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);

	mv_cesa_ablkcipher_std_step(ablkreq);
}

static inline void
mv_cesa_ablkcipher_std_prepare(struct ablkcipher_request *req)
{
	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
	struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
	struct mv_cesa_engine *engine = sreq->base.engine;

	sreq->size = 0;
	sreq->offset = 0;
	mv_cesa_adjust_op(engine, &sreq->op);
	memcpy(engine->sram, &sreq->op, sizeof(sreq->op));
}

static inline void mv_cesa_ablkcipher_prepare(struct crypto_async_request *req,
					      struct mv_cesa_engine *engine)
{
	struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);

	creq->req.base.engine = engine;

	mv_cesa_ablkcipher_std_prepare(ablkreq);
}

static inline void
mv_cesa_ablkcipher_req_cleanup(struct crypto_async_request *req)
{
}

static const struct mv_cesa_req_ops mv_cesa_ablkcipher_req_ops = {
	.step = mv_cesa_ablkcipher_step,
	.process = mv_cesa_ablkcipher_process,
	.prepare = mv_cesa_ablkcipher_prepare,
	.cleanup = mv_cesa_ablkcipher_req_cleanup,
};

static int mv_cesa_ablkcipher_cra_init(struct crypto_tfm *tfm)
{
	struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(tfm);

	ctx->base.ops = &mv_cesa_ablkcipher_req_ops;

	tfm->crt_ablkcipher.reqsize = sizeof(struct mv_cesa_ablkcipher_req);

	return 0;
}

static int mv_cesa_aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
			      unsigned int len)
{
	struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
	struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(tfm);
	int remaining;
	int offset;
	int ret;
	int i;

	ret = crypto_aes_expand_key(&ctx->aes, key, len);
	if (ret) {
		crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
		return ret;
	}

	remaining = (ctx->aes.key_length - 16) / 4;
	offset = ctx->aes.key_length + 24 - remaining;
	for (i = 0; i < remaining; i++)
		ctx->aes.key_dec[4 + i] =
			cpu_to_le32(ctx->aes.key_enc[offset + i]);

	return 0;
}

static inline int
mv_cesa_ablkcipher_std_req_init(struct ablkcipher_request *req,
				const struct mv_cesa_op_ctx *op_templ)
{
	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
	struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;

	sreq->base.type = CESA_STD_REQ;
	sreq->op = *op_templ;
	sreq->skip_ctx = false;

	return 0;
}

static int mv_cesa_ablkcipher_req_init(struct ablkcipher_request *req,
				       struct mv_cesa_op_ctx *tmpl)
{
	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
	struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
	unsigned int blksize = crypto_ablkcipher_blocksize(tfm);

	if (!IS_ALIGNED(req->nbytes, blksize))
		return -EINVAL;

	creq->src_nents = sg_nents_for_len(req->src, req->nbytes);
	creq->dst_nents = sg_nents_for_len(req->dst, req->nbytes);

	mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_OP_CRYPT_ONLY,
			      CESA_SA_DESC_CFG_OP_MSK);

	return mv_cesa_ablkcipher_std_req_init(req, tmpl);
}

static int mv_cesa_aes_op(struct ablkcipher_request *req,
			  struct mv_cesa_op_ctx *tmpl)
{
	struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
	int ret, i;
	u32 *key;
	u32 cfg;

	cfg = CESA_SA_DESC_CFG_CRYPTM_AES;

	if (mv_cesa_get_op_cfg(tmpl) & CESA_SA_DESC_CFG_DIR_DEC)
		key = ctx->aes.key_dec;
	else
		key = ctx->aes.key_enc;

	for (i = 0; i < ctx->aes.key_length / sizeof(u32); i++)
		tmpl->ctx.blkcipher.key[i] = cpu_to_le32(key[i]);

	if (ctx->aes.key_length == 24)
		cfg |= CESA_SA_DESC_CFG_AES_LEN_192;
	else if (ctx->aes.key_length == 32)
		cfg |= CESA_SA_DESC_CFG_AES_LEN_256;

	mv_cesa_update_op_cfg(tmpl, cfg,
			      CESA_SA_DESC_CFG_CRYPTM_MSK |
			      CESA_SA_DESC_CFG_AES_LEN_MSK);

	ret = mv_cesa_ablkcipher_req_init(req, tmpl);
	if (ret)
		return ret;

	return mv_cesa_queue_req(&req->base);
}

static int mv_cesa_ecb_aes_encrypt(struct ablkcipher_request *req)
{
	struct mv_cesa_op_ctx tmpl;

	mv_cesa_set_op_cfg(&tmpl,
			   CESA_SA_DESC_CFG_CRYPTCM_ECB |
			   CESA_SA_DESC_CFG_DIR_ENC);

	return mv_cesa_aes_op(req, &tmpl);
}

static int mv_cesa_ecb_aes_decrypt(struct ablkcipher_request *req)
{
	struct mv_cesa_op_ctx tmpl;

	mv_cesa_set_op_cfg(&tmpl,
			   CESA_SA_DESC_CFG_CRYPTCM_ECB |
			   CESA_SA_DESC_CFG_DIR_DEC);

	return mv_cesa_aes_op(req, &tmpl);
}

struct crypto_alg mv_cesa_ecb_aes_alg = {
	.cra_name = "ecb(aes)",
	.cra_driver_name = "mv-ecb-aes",
	.cra_priority = 300,
	.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
		     CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
	.cra_blocksize = AES_BLOCK_SIZE,
	.cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
	.cra_alignmask = 0,
	.cra_type = &crypto_ablkcipher_type,
	.cra_module = THIS_MODULE,
	.cra_init = mv_cesa_ablkcipher_cra_init,
	.cra_u = {
		.ablkcipher = {
			.min_keysize = AES_MIN_KEY_SIZE,
			.max_keysize = AES_MAX_KEY_SIZE,
			.setkey = mv_cesa_aes_setkey,
			.encrypt = mv_cesa_ecb_aes_encrypt,
			.decrypt = mv_cesa_ecb_aes_decrypt,
		},
	},
};

static int mv_cesa_cbc_aes_op(struct ablkcipher_request *req,
			      struct mv_cesa_op_ctx *tmpl)
{
	mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
			      CESA_SA_DESC_CFG_CRYPTCM_MSK);
	memcpy(tmpl->ctx.blkcipher.iv, req->info, AES_BLOCK_SIZE);

	return mv_cesa_aes_op(req, tmpl);
}

static int mv_cesa_cbc_aes_encrypt(struct ablkcipher_request *req)
{
	struct mv_cesa_op_ctx tmpl;

	mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);

	return mv_cesa_cbc_aes_op(req, &tmpl);
}

static int mv_cesa_cbc_aes_decrypt(struct ablkcipher_request *req)
{
	struct mv_cesa_op_ctx tmpl;

	mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);

	return mv_cesa_cbc_aes_op(req, &tmpl);
}

struct crypto_alg mv_cesa_cbc_aes_alg = {
	.cra_name = "cbc(aes)",
	.cra_driver_name = "mv-cbc-aes",
	.cra_priority = 300,
	.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
		     CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
	.cra_blocksize = AES_BLOCK_SIZE,
	.cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
	.cra_alignmask = 0,
	.cra_type = &crypto_ablkcipher_type,
	.cra_module = THIS_MODULE,
	.cra_init = mv_cesa_ablkcipher_cra_init,
	.cra_u = {
		.ablkcipher = {
			.min_keysize = AES_MIN_KEY_SIZE,
			.max_keysize = AES_MAX_KEY_SIZE,
			.ivsize = AES_BLOCK_SIZE,
			.setkey = mv_cesa_aes_setkey,
			.encrypt = mv_cesa_cbc_aes_encrypt,
			.decrypt = mv_cesa_cbc_aes_decrypt,
		},
	},
};
Commit	Line	Data
f63601fd BB	1	/*
	2	* Cipher algorithms supported by the CESA: DES, 3DES and AES.
	3	*
	4	* Author: Boris Brezillon <boris.brezillon@free-electrons.com>
	5	* Author: Arnaud Ebalard <arno@natisbad.org>
	6	*
	7	* This work is based on an initial version written by
	8	* Sebastian Andrzej Siewior < sebastian at breakpoint dot cc >
	9	*
	10	* This program is free software; you can redistribute it and/or modify it
	11	* under the terms of the GNU General Public License version 2 as published
	12	* by the Free Software Foundation.
	13	*/
	14
	15	#include <crypto/aes.h>
	16
	17	#include "cesa.h"
	18
	19	struct mv_cesa_aes_ctx {
	20	struct mv_cesa_ctx base;
	21	struct crypto_aes_ctx aes;
	22	};
	23
	24	static void mv_cesa_ablkcipher_std_step(struct ablkcipher_request *req)
	25	{
	26	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
	27	struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
	28	struct mv_cesa_engine *engine = sreq->base.engine;
	29	size_t len = min_t(size_t, req->nbytes - sreq->offset,
	30	CESA_SA_SRAM_PAYLOAD_SIZE);
	31
	32	len = sg_pcopy_to_buffer(req->src, creq->src_nents,
	33	engine->sram + CESA_SA_DATA_SRAM_OFFSET,
	34	len, sreq->offset);
	35
	36	sreq->size = len;
	37	mv_cesa_set_crypt_op_len(&sreq->op, len);
	38
	39	/* FIXME: only update enc_len field */
	40	if (!sreq->skip_ctx) {
	41	memcpy(engine->sram, &sreq->op, sizeof(sreq->op));
	42	sreq->skip_ctx = true;
	43	} else {
	44	memcpy(engine->sram, &sreq->op, sizeof(sreq->op.desc));
	45	}
	46
	47	mv_cesa_set_int_mask(engine, CESA_SA_INT_ACCEL0_DONE);
	48	writel(CESA_SA_CFG_PARA_DIS, engine->regs + CESA_SA_CFG);
	49	writel(CESA_SA_CMD_EN_CESA_SA_ACCL0, engine->regs + CESA_SA_CMD);
	50	}
	51
	52	static int mv_cesa_ablkcipher_std_process(struct ablkcipher_request *req,
	53	u32 status)
	54	{
	55	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
	56	struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
	57	struct mv_cesa_engine *engine = sreq->base.engine;
	58	size_t len;
	59
	60	len = sg_pcopy_from_buffer(req->dst, creq->dst_nents,
	61	engine->sram + CESA_SA_DATA_SRAM_OFFSET,
	62	sreq->size, sreq->offset);
	63
	64	sreq->offset += len;
65	if (sreq->offset < req->nbytes)
66	return -EINPROGRESS;
67
68	return 0;
69	}
70
71	static int mv_cesa_ablkcipher_process(struct crypto_async_request *req,
72	u32 status)
73	{
74	struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
75	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
76	struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
77	struct mv_cesa_engine *engine = sreq->base.engine;
78	int ret;
79
80	ret = mv_cesa_ablkcipher_std_process(ablkreq, status);
81	if (ret)
82	return ret;
83
84	memcpy(ablkreq->info, engine->sram + CESA_SA_CRYPT_IV_SRAM_OFFSET,
85	crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(ablkreq)));
86
87	return 0;
88	}
89
90	static void mv_cesa_ablkcipher_step(struct crypto_async_request *req)
91	{
92	struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
93
94	mv_cesa_ablkcipher_std_step(ablkreq);
95	}
96
97	static inline void
98	mv_cesa_ablkcipher_std_prepare(struct ablkcipher_request *req)
99	{
100	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
101	struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
102	struct mv_cesa_engine *engine = sreq->base.engine;
103
104	sreq->size = 0;
105	sreq->offset = 0;
106	mv_cesa_adjust_op(engine, &sreq->op);
107	memcpy(engine->sram, &sreq->op, sizeof(sreq->op));
108	}
109
110	static inline void mv_cesa_ablkcipher_prepare(struct crypto_async_request *req,
111	struct mv_cesa_engine *engine)
112	{
113	struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
114	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(ablkreq);
115
116	creq->req.base.engine = engine;
117
118	mv_cesa_ablkcipher_std_prepare(ablkreq);
119	}
120
121	static inline void
122	mv_cesa_ablkcipher_req_cleanup(struct crypto_async_request *req)
123	{
124	}
125
126	static const struct mv_cesa_req_ops mv_cesa_ablkcipher_req_ops = {
127	.step = mv_cesa_ablkcipher_step,
128	.process = mv_cesa_ablkcipher_process,
129	.prepare = mv_cesa_ablkcipher_prepare,
130	.cleanup = mv_cesa_ablkcipher_req_cleanup,
131	};
132
133	static int mv_cesa_ablkcipher_cra_init(struct crypto_tfm *tfm)
134	{
135	struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(tfm);
136
137	ctx->base.ops = &mv_cesa_ablkcipher_req_ops;
138
139	tfm->crt_ablkcipher.reqsize = sizeof(struct mv_cesa_ablkcipher_req);
140
141	return 0;
142	}
143
144	static int mv_cesa_aes_setkey(struct crypto_ablkcipher cipher, const u8 key,
145	unsigned int len)
146	{
147	struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
148	struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(tfm);
149	int remaining;
150	int offset;
151	int ret;
152	int i;
153
154	ret = crypto_aes_expand_key(&ctx->aes, key, len);
155	if (ret) {
156	crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
157	return ret;
158	}
159
160	remaining = (ctx->aes.key_length - 16) / 4;
161	offset = ctx->aes.key_length + 24 - remaining;
162	for (i = 0; i < remaining; i++)
163	ctx->aes.key_dec[4 + i] =
164	cpu_to_le32(ctx->aes.key_enc[offset + i]);
165
166	return 0;
167	}
168
169	static inline int
170	mv_cesa_ablkcipher_std_req_init(struct ablkcipher_request *req,
171	const struct mv_cesa_op_ctx *op_templ)
172	{
173	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
174	struct mv_cesa_ablkcipher_std_req *sreq = &creq->req.std;
175
176	sreq->base.type = CESA_STD_REQ;
177	sreq->op = *op_templ;
178	sreq->skip_ctx = false;
179
180	return 0;
181	}
182
183	static int mv_cesa_ablkcipher_req_init(struct ablkcipher_request *req,
184	struct mv_cesa_op_ctx *tmpl)
185	{
186	struct mv_cesa_ablkcipher_req *creq = ablkcipher_request_ctx(req);
187	struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
188	unsigned int blksize = crypto_ablkcipher_blocksize(tfm);
189
190	if (!IS_ALIGNED(req->nbytes, blksize))
191	return -EINVAL;
192
193	creq->src_nents = sg_nents_for_len(req->src, req->nbytes);
194	creq->dst_nents = sg_nents_for_len(req->dst, req->nbytes);
195
196	mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_OP_CRYPT_ONLY,
197	CESA_SA_DESC_CFG_OP_MSK);
198
199	return mv_cesa_ablkcipher_std_req_init(req, tmpl);
200	}
201
202	static int mv_cesa_aes_op(struct ablkcipher_request *req,
203	struct mv_cesa_op_ctx *tmpl)
204	{
205	struct mv_cesa_aes_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
206	int ret, i;
207	u32 *key;
208	u32 cfg;
209
210	cfg = CESA_SA_DESC_CFG_CRYPTM_AES;
211
212	if (mv_cesa_get_op_cfg(tmpl) & CESA_SA_DESC_CFG_DIR_DEC)
213	key = ctx->aes.key_dec;
214	else
215	key = ctx->aes.key_enc;
216
217	for (i = 0; i < ctx->aes.key_length / sizeof(u32); i++)
218	tmpl->ctx.blkcipher.key[i] = cpu_to_le32(key[i]);
219
220	if (ctx->aes.key_length == 24)
221	cfg \|= CESA_SA_DESC_CFG_AES_LEN_192;
222	else if (ctx->aes.key_length == 32)
223	cfg \|= CESA_SA_DESC_CFG_AES_LEN_256;
224
225	mv_cesa_update_op_cfg(tmpl, cfg,
226	CESA_SA_DESC_CFG_CRYPTM_MSK \|
227	CESA_SA_DESC_CFG_AES_LEN_MSK);
228
229	ret = mv_cesa_ablkcipher_req_init(req, tmpl);
230	if (ret)
231	return ret;
232
233	return mv_cesa_queue_req(&req->base);
234	}
235
236	static int mv_cesa_ecb_aes_encrypt(struct ablkcipher_request *req)
237	{
238	struct mv_cesa_op_ctx tmpl;
239
240	mv_cesa_set_op_cfg(&tmpl,
241	CESA_SA_DESC_CFG_CRYPTCM_ECB \|
242	CESA_SA_DESC_CFG_DIR_ENC);
243
244	return mv_cesa_aes_op(req, &tmpl);
245	}
246
247	static int mv_cesa_ecb_aes_decrypt(struct ablkcipher_request *req)
248	{
249	struct mv_cesa_op_ctx tmpl;
250
251	mv_cesa_set_op_cfg(&tmpl,
252	CESA_SA_DESC_CFG_CRYPTCM_ECB \|
253	CESA_SA_DESC_CFG_DIR_DEC);
254
255	return mv_cesa_aes_op(req, &tmpl);
256	}
257
258	struct crypto_alg mv_cesa_ecb_aes_alg = {
259	.cra_name = "ecb(aes)",
260	.cra_driver_name = "mv-ecb-aes",
261	.cra_priority = 300,
262	.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER \|
263	CRYPTO_ALG_KERN_DRIVER_ONLY \| CRYPTO_ALG_ASYNC,
264	.cra_blocksize = AES_BLOCK_SIZE,
265	.cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
266	.cra_alignmask = 0,
267	.cra_type = &crypto_ablkcipher_type,
268	.cra_module = THIS_MODULE,
269	.cra_init = mv_cesa_ablkcipher_cra_init,
270	.cra_u = {
271	.ablkcipher = {
272	.min_keysize = AES_MIN_KEY_SIZE,
273	.max_keysize = AES_MAX_KEY_SIZE,
274	.setkey = mv_cesa_aes_setkey,
275	.encrypt = mv_cesa_ecb_aes_encrypt,
276	.decrypt = mv_cesa_ecb_aes_decrypt,
277	},
278	},
279	};
280
281	static int mv_cesa_cbc_aes_op(struct ablkcipher_request *req,
282	struct mv_cesa_op_ctx *tmpl)
283	{
284	mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
285	CESA_SA_DESC_CFG_CRYPTCM_MSK);
286	memcpy(tmpl->ctx.blkcipher.iv, req->info, AES_BLOCK_SIZE);
287
288	return mv_cesa_aes_op(req, tmpl);
289	}
290
291	static int mv_cesa_cbc_aes_encrypt(struct ablkcipher_request *req)
292	{
293	struct mv_cesa_op_ctx tmpl;
294
295	mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
296
297	return mv_cesa_cbc_aes_op(req, &tmpl);
298	}
299
300	static int mv_cesa_cbc_aes_decrypt(struct ablkcipher_request *req)
301	{
302	struct mv_cesa_op_ctx tmpl;
303
304	mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
305
306	return mv_cesa_cbc_aes_op(req, &tmpl);
307	}
308
309	struct crypto_alg mv_cesa_cbc_aes_alg = {
310	.cra_name = "cbc(aes)",
311	.cra_driver_name = "mv-cbc-aes",
312	.cra_priority = 300,
313	.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER \|
314	CRYPTO_ALG_KERN_DRIVER_ONLY \| CRYPTO_ALG_ASYNC,
315	.cra_blocksize = AES_BLOCK_SIZE,
316	.cra_ctxsize = sizeof(struct mv_cesa_aes_ctx),
317	.cra_alignmask = 0,
318	.cra_type = &crypto_ablkcipher_type,
319	.cra_module = THIS_MODULE,
320	.cra_init = mv_cesa_ablkcipher_cra_init,
321	.cra_u = {
322	.ablkcipher = {
323	.min_keysize = AES_MIN_KEY_SIZE,
324	.max_keysize = AES_MAX_KEY_SIZE,
325	.ivsize = AES_BLOCK_SIZE,
326	.setkey = mv_cesa_aes_setkey,
327	.encrypt = mv_cesa_cbc_aes_encrypt,
328	.decrypt = mv_cesa_cbc_aes_decrypt,
329	},
330	},
331	};