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Commit 3b61a905 authored by Uri Simchoni's avatar Uri Simchoni Committed by Herbert Xu
Browse files

crypto: mv_cesa - Enqueue generic async requests 



Enqueue generic async requests rather than ablkcipher requests
in the driver's queue

Signed-off-by: default avatarUri Simchoni <uri@jdland.co.il>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 15d4dd35

drivers/crypto/mv_cesa.c

+24 −19
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ enum engine_status { 
 * @sg_src_left:	bytes left in src to process (scatter list)

 * @src_start:		offset to add to src start position (scatter list)

 * @crypt_len:		length of current crypt process

 * @hw_nbytes:		total bytes to process in hw for this request

 * @sg_dst_left:	bytes left dst to process in this scatter list

 * @dst_start:		offset to add to dst start position (scatter list)

 * @total_req_bytes:	total number of bytes processed (request).
@@ -55,6 +56,7 @@ struct req_progress { 
	int sg_src_left;

	int src_start;

	int crypt_len;

	int hw_nbytes;

	/* dst mostly */

	int sg_dst_left;

	int dst_start;
@@ -71,7 +73,7 @@ struct crypto_priv { 
	spinlock_t lock;

	struct crypto_queue queue;

	enum engine_status eng_st;

	struct ablkcipher_request *cur_req;

	struct crypto_async_request *cur_req;

	struct req_progress p;

	int max_req_size;

	int sram_size;
@@ -175,18 +177,18 @@ static void copy_src_to_buf(struct req_progress *p, char *dbuf, int len) 
	}

}



static void setup_data_in(struct ablkcipher_request *req)

static void setup_data_in(void)

{

	struct req_progress *p = &cpg->p;

	p->crypt_len =

	    min((int)req->nbytes - p->total_req_bytes, cpg->max_req_size);

	    min(p->hw_nbytes - p->total_req_bytes, cpg->max_req_size);

	copy_src_to_buf(p, cpg->sram + SRAM_DATA_IN_START,

			p->crypt_len);

}



static void mv_process_current_q(int first_block)

{

	struct ablkcipher_request *req = cpg->cur_req;

	struct ablkcipher_request *req = ablkcipher_request_cast(cpg->cur_req);

	struct mv_ctx *ctx = crypto_tfm_ctx(req->base.tfm);

	struct mv_req_ctx *req_ctx = ablkcipher_request_ctx(req);

	struct sec_accel_config op;
@@ -229,7 +231,7 @@ static void mv_process_current_q(int first_block) 
		ENC_P_DST(SRAM_DATA_OUT_START);

	op.enc_key_p = SRAM_DATA_KEY_P;



	setup_data_in(req);

	setup_data_in();

	op.enc_len = cpg->p.crypt_len;

	memcpy(cpg->sram + SRAM_CONFIG, &op,

			sizeof(struct sec_accel_config));
@@ -246,7 +248,7 @@ static void mv_process_current_q(int first_block) 


static void mv_crypto_algo_completion(void)

{

	struct ablkcipher_request *req = cpg->cur_req;

	struct ablkcipher_request *req = ablkcipher_request_cast(cpg->cur_req);

	struct mv_req_ctx *req_ctx = ablkcipher_request_ctx(req);



	if (req_ctx->op != COP_AES_CBC)
@@ -257,7 +259,7 @@ static void mv_crypto_algo_completion(void) 


static void dequeue_complete_req(void)

{

	struct ablkcipher_request *req = cpg->cur_req;

	struct crypto_async_request *req = cpg->cur_req;

	void *buf;

	int ret;

	int need_copy_len = cpg->p.crypt_len;
@@ -289,7 +291,7 @@ static void dequeue_complete_req(void) 
	} while (need_copy_len > 0);



	BUG_ON(cpg->eng_st != ENGINE_W_DEQUEUE);

	if (cpg->p.total_req_bytes < req->nbytes) {

	if (cpg->p.total_req_bytes < cpg->p.hw_nbytes) {

		/* process next scatter list entry */

		cpg->eng_st = ENGINE_BUSY;

		mv_process_current_q(0);
@@ -299,7 +301,7 @@ static void dequeue_complete_req(void) 
		mv_crypto_algo_completion();

		cpg->eng_st = ENGINE_IDLE;

		local_bh_disable();

		req->base.complete(&req->base, 0);

		req->complete(req, 0);

		local_bh_enable();

	}

}
@@ -323,16 +325,19 @@ static int count_sgs(struct scatterlist *sl, unsigned int total_bytes) 


static void mv_enqueue_new_req(struct ablkcipher_request *req)

{

	struct req_progress *p = &cpg->p;

	int num_sgs;



	cpg->cur_req = req;

	memset(&cpg->p, 0, sizeof(struct req_progress));

	cpg->cur_req = &req->base;

	memset(p, 0, sizeof(struct req_progress));

	p->hw_nbytes = req->nbytes;



	num_sgs = count_sgs(req->src, req->nbytes);

	sg_miter_start(&cpg->p.src_sg_it, req->src, num_sgs, SG_MITER_FROM_SG);

	sg_miter_start(&p->src_sg_it, req->src, num_sgs, SG_MITER_FROM_SG);



	num_sgs = count_sgs(req->dst, req->nbytes);

	sg_miter_start(&cpg->p.dst_sg_it, req->dst, num_sgs, SG_MITER_TO_SG);

	sg_miter_start(&p->dst_sg_it, req->dst, num_sgs, SG_MITER_TO_SG);



	mv_process_current_q(1);

}
@@ -378,13 +383,13 @@ static int queue_manag(void *data) 
	return 0;

}



static int mv_handle_req(struct ablkcipher_request *req)

static int mv_handle_req(struct crypto_async_request *req)

{

	unsigned long flags;

	int ret;



	spin_lock_irqsave(&cpg->lock, flags);

	ret = ablkcipher_enqueue_request(&cpg->queue, req);

	ret = crypto_enqueue_request(&cpg->queue, req);

	spin_unlock_irqrestore(&cpg->lock, flags);

	wake_up_process(cpg->queue_th);

	return ret;
@@ -397,7 +402,7 @@ static int mv_enc_aes_ecb(struct ablkcipher_request *req) 
	req_ctx->op = COP_AES_ECB;

	req_ctx->decrypt = 0;



	return mv_handle_req(req);

	return mv_handle_req(&req->base);

}



static int mv_dec_aes_ecb(struct ablkcipher_request *req)
@@ -409,7 +414,7 @@ static int mv_dec_aes_ecb(struct ablkcipher_request *req) 
	req_ctx->decrypt = 1;



	compute_aes_dec_key(ctx);

	return mv_handle_req(req);

	return mv_handle_req(&req->base);

}



static int mv_enc_aes_cbc(struct ablkcipher_request *req)
@@ -419,7 +424,7 @@ static int mv_enc_aes_cbc(struct ablkcipher_request *req) 
	req_ctx->op = COP_AES_CBC;

	req_ctx->decrypt = 0;



	return mv_handle_req(req);

	return mv_handle_req(&req->base);

}



static int mv_dec_aes_cbc(struct ablkcipher_request *req)
@@ -431,7 +436,7 @@ static int mv_dec_aes_cbc(struct ablkcipher_request *req) 
	req_ctx->decrypt = 1;



	compute_aes_dec_key(ctx);

	return mv_handle_req(req);

	return mv_handle_req(&req->base);

}



static int mv_cra_init(struct crypto_tfm *tfm)