Commit ce572085 authored by Horia Geanta's avatar Horia Geanta Committed by Herbert Xu
Browse files

crypto: caam - fix "failed to check map error" DMA warnings 



Use dma_mapping_error for every dma_map_single / dma_map_page.

Signed-off-by: default avatarHoria Geanta <horia.geanta@freescale.com>
Acked-by: default avatarKim Phillips <kim.phillips@freescale.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 71c65f7c

drivers/crypto/caam/caamalg.c

+31 −3
Original line number Diff line number Diff line
@@ -1313,8 +1313,13 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, 
					 DMA_FROM_DEVICE, dst_chained);

	}



	/* Check if data are contiguous */

	iv_dma = dma_map_single(jrdev, req->iv, ivsize, DMA_TO_DEVICE);

	if (dma_mapping_error(jrdev, iv_dma)) {

		dev_err(jrdev, "unable to map IV\n");

		return ERR_PTR(-ENOMEM);

	}



	/* Check if data are contiguous */

	if (assoc_nents || sg_dma_address(req->assoc) + req->assoclen !=

	    iv_dma || src_nents || iv_dma + ivsize !=

	    sg_dma_address(req->src)) {
@@ -1369,6 +1374,10 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, 
	}

	edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,

					    sec4_sg_bytes, DMA_TO_DEVICE);

	if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {

		dev_err(jrdev, "unable to map S/G table\n");

		return ERR_PTR(-ENOMEM);

	}



	return edesc;

}
@@ -1494,8 +1503,13 @@ static struct aead_edesc *aead_giv_edesc_alloc(struct aead_givcrypt_request 
					 DMA_FROM_DEVICE, dst_chained);

	}



	/* Check if data are contiguous */

	iv_dma = dma_map_single(jrdev, greq->giv, ivsize, DMA_TO_DEVICE);

	if (dma_mapping_error(jrdev, iv_dma)) {

		dev_err(jrdev, "unable to map IV\n");

		return ERR_PTR(-ENOMEM);

	}



	/* Check if data are contiguous */

	if (assoc_nents || sg_dma_address(req->assoc) + req->assoclen !=

	    iv_dma || src_nents || iv_dma + ivsize != sg_dma_address(req->src))

		contig &= ~GIV_SRC_CONTIG;
@@ -1559,6 +1573,10 @@ static struct aead_edesc *aead_giv_edesc_alloc(struct aead_givcrypt_request 
	}

	edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,

					    sec4_sg_bytes, DMA_TO_DEVICE);

	if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {

		dev_err(jrdev, "unable to map S/G table\n");

		return ERR_PTR(-ENOMEM);

	}



	return edesc;

}
@@ -1650,11 +1668,16 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request 
					 DMA_FROM_DEVICE, dst_chained);

	}



	iv_dma = dma_map_single(jrdev, req->info, ivsize, DMA_TO_DEVICE);

	if (dma_mapping_error(jrdev, iv_dma)) {

		dev_err(jrdev, "unable to map IV\n");

		return ERR_PTR(-ENOMEM);

	}



	/*

	 * Check if iv can be contiguous with source and destination.

	 * If so, include it. If not, create scatterlist.

	 */

	iv_dma = dma_map_single(jrdev, req->info, ivsize, DMA_TO_DEVICE);

	if (!src_nents && iv_dma + ivsize == sg_dma_address(req->src))

		iv_contig = true;

	else
@@ -1693,6 +1716,11 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request 


	edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,

					    sec4_sg_bytes, DMA_TO_DEVICE);

	if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {

		dev_err(jrdev, "unable to map S/G table\n");

		return ERR_PTR(-ENOMEM);

	}



	edesc->iv_dma = iv_dma;



#ifdef DEBUG

drivers/crypto/caam/caamhash.c

+90 −16
Original line number Diff line number Diff line
@@ -137,13 +137,20 @@ struct caam_hash_state { 
/* Common job descriptor seq in/out ptr routines */



/* Map state->caam_ctx, and append seq_out_ptr command that points to it */

static inline void map_seq_out_ptr_ctx(u32 *desc, struct device *jrdev,

static inline int map_seq_out_ptr_ctx(u32 *desc, struct device *jrdev,

				      struct caam_hash_state *state,

				      int ctx_len)

{

	state->ctx_dma = dma_map_single(jrdev, state->caam_ctx,

					ctx_len, DMA_FROM_DEVICE);

	if (dma_mapping_error(jrdev, state->ctx_dma)) {

		dev_err(jrdev, "unable to map ctx\n");

		return -ENOMEM;

	}



	append_seq_out_ptr(desc, state->ctx_dma, ctx_len, 0);



	return 0;

}



/* Map req->result, and append seq_out_ptr command that points to it */
@@ -201,14 +208,19 @@ try_buf_map_to_sec4_sg(struct device *jrdev, struct sec4_sg_entry *sec4_sg, 
}



/* Map state->caam_ctx, and add it to link table */

static inline void ctx_map_to_sec4_sg(u32 *desc, struct device *jrdev,

				      struct caam_hash_state *state,

				      int ctx_len,

				      struct sec4_sg_entry *sec4_sg,

				      u32 flag)

static inline int ctx_map_to_sec4_sg(u32 *desc, struct device *jrdev,

				     struct caam_hash_state *state, int ctx_len,

				     struct sec4_sg_entry *sec4_sg, u32 flag)

{

	state->ctx_dma = dma_map_single(jrdev, state->caam_ctx, ctx_len, flag);

	if (dma_mapping_error(jrdev, state->ctx_dma)) {

		dev_err(jrdev, "unable to map ctx\n");

		return -ENOMEM;

	}



	dma_to_sec4_sg_one(sec4_sg, state->ctx_dma, ctx_len, 0);



	return 0;

}



/* Common shared descriptor commands */
@@ -809,8 +821,10 @@ static int ahash_update_ctx(struct ahash_request *req) 
		edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) +

				 DESC_JOB_IO_LEN;



		ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,

		ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,

					 edesc->sec4_sg, DMA_BIDIRECTIONAL);

		if (ret)

			return ret;



		state->buf_dma = try_buf_map_to_sec4_sg(jrdev,

							edesc->sec4_sg + 1,
@@ -839,6 +853,10 @@ static int ahash_update_ctx(struct ahash_request *req) 
		edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,

						     sec4_sg_bytes,

						     DMA_TO_DEVICE);

		if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {

			dev_err(jrdev, "unable to map S/G table\n");

			return -ENOMEM;

		}



		append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len +

				       to_hash, LDST_SGF);
@@ -914,8 +932,10 @@ static int ahash_final_ctx(struct ahash_request *req) 
			 DESC_JOB_IO_LEN;

	edesc->src_nents = 0;



	ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len, edesc->sec4_sg,

			   DMA_TO_DEVICE);

	ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,

				 edesc->sec4_sg, DMA_TO_DEVICE);

	if (ret)

		return ret;



	state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1,

						buf, state->buf_dma, buflen,
@@ -924,12 +944,20 @@ static int ahash_final_ctx(struct ahash_request *req) 


	edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,

					    sec4_sg_bytes, DMA_TO_DEVICE);

	if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {

		dev_err(jrdev, "unable to map S/G table\n");

		return -ENOMEM;

	}



	append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len + buflen,

			  LDST_SGF);



	edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,

						digestsize);

	if (dma_mapping_error(jrdev, edesc->dst_dma)) {

		dev_err(jrdev, "unable to map dst\n");

		return -ENOMEM;

	}



#ifdef DEBUG

	print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
@@ -992,8 +1020,10 @@ static int ahash_finup_ctx(struct ahash_request *req) 
	edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) +

			 DESC_JOB_IO_LEN;



	ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len, edesc->sec4_sg,

			   DMA_TO_DEVICE);

	ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len,

				 edesc->sec4_sg, DMA_TO_DEVICE);

	if (ret)

		return ret;



	state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1,

						buf, state->buf_dma, buflen,
@@ -1004,12 +1034,20 @@ static int ahash_finup_ctx(struct ahash_request *req) 


	edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,

					    sec4_sg_bytes, DMA_TO_DEVICE);

	if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {

		dev_err(jrdev, "unable to map S/G table\n");

		return -ENOMEM;

	}



	append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len +

			       buflen + req->nbytes, LDST_SGF);



	edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,

						digestsize);

	if (dma_mapping_error(jrdev, edesc->dst_dma)) {

		dev_err(jrdev, "unable to map dst\n");

		return -ENOMEM;

	}



#ifdef DEBUG

	print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
@@ -1070,6 +1108,10 @@ static int ahash_digest(struct ahash_request *req) 
		sg_to_sec4_sg_last(req->src, src_nents, edesc->sec4_sg, 0);

		edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,

					    sec4_sg_bytes, DMA_TO_DEVICE);

		if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {

			dev_err(jrdev, "unable to map S/G table\n");

			return -ENOMEM;

		}

		src_dma = edesc->sec4_sg_dma;

		options = LDST_SGF;

	} else {
@@ -1080,6 +1122,10 @@ static int ahash_digest(struct ahash_request *req) 


	edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,

						digestsize);

	if (dma_mapping_error(jrdev, edesc->dst_dma)) {

		dev_err(jrdev, "unable to map dst\n");

		return -ENOMEM;

	}



#ifdef DEBUG

	print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
@@ -1128,11 +1174,19 @@ static int ahash_final_no_ctx(struct ahash_request *req) 
	init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | HDR_REVERSE);



	state->buf_dma = dma_map_single(jrdev, buf, buflen, DMA_TO_DEVICE);

	if (dma_mapping_error(jrdev, state->buf_dma)) {

		dev_err(jrdev, "unable to map src\n");

		return -ENOMEM;

	}



	append_seq_in_ptr(desc, state->buf_dma, buflen, 0);



	edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,

						digestsize);

	if (dma_mapping_error(jrdev, edesc->dst_dma)) {

		dev_err(jrdev, "unable to map dst\n");

		return -ENOMEM;

	}

	edesc->src_nents = 0;



#ifdef DEBUG
@@ -1219,10 +1273,16 @@ static int ahash_update_no_ctx(struct ahash_request *req) 
		edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,

						    sec4_sg_bytes,

						    DMA_TO_DEVICE);

		if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {

			dev_err(jrdev, "unable to map S/G table\n");

			return -ENOMEM;

		}



		append_seq_in_ptr(desc, edesc->sec4_sg_dma, to_hash, LDST_SGF);



		map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);

		ret = map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);

		if (ret)

			return ret;



#ifdef DEBUG

		print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
@@ -1311,12 +1371,20 @@ static int ahash_finup_no_ctx(struct ahash_request *req) 


	edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,

					    sec4_sg_bytes, DMA_TO_DEVICE);

	if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {

		dev_err(jrdev, "unable to map S/G table\n");

		return -ENOMEM;

	}



	append_seq_in_ptr(desc, edesc->sec4_sg_dma, buflen +

			       req->nbytes, LDST_SGF);



	edesc->dst_dma = map_seq_out_ptr_result(desc, jrdev, req->result,

						digestsize);

	if (dma_mapping_error(jrdev, edesc->dst_dma)) {

		dev_err(jrdev, "unable to map dst\n");

		return -ENOMEM;

	}



#ifdef DEBUG

	print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
@@ -1393,6 +1461,10 @@ static int ahash_update_first(struct ahash_request *req) 
							    edesc->sec4_sg,

							    sec4_sg_bytes,

							    DMA_TO_DEVICE);

			if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {

				dev_err(jrdev, "unable to map S/G table\n");

				return -ENOMEM;

			}

			src_dma = edesc->sec4_sg_dma;

			options = LDST_SGF;

		} else {
@@ -1410,7 +1482,9 @@ static int ahash_update_first(struct ahash_request *req) 


		append_seq_in_ptr(desc, src_dma, to_hash, options);



		map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);

		ret = map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);

		if (ret)

			return ret;



#ifdef DEBUG

		print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",

drivers/crypto/caam/caamrng.c

+42 −9
Original line number Diff line number Diff line
@@ -185,7 +185,7 @@ static int caam_read(struct hwrng *rng, void *data, size_t max, bool wait) 
				      max - copied_idx, false);

}



static inline void rng_create_sh_desc(struct caam_rng_ctx *ctx)

static inline int rng_create_sh_desc(struct caam_rng_ctx *ctx)

{

	struct device *jrdev = ctx->jrdev;

	u32 *desc = ctx->sh_desc;
@@ -203,13 +203,18 @@ static inline void rng_create_sh_desc(struct caam_rng_ctx *ctx) 


	ctx->sh_desc_dma = dma_map_single(jrdev, desc, desc_bytes(desc),

					  DMA_TO_DEVICE);

	if (dma_mapping_error(jrdev, ctx->sh_desc_dma)) {

		dev_err(jrdev, "unable to map shared descriptor\n");

		return -ENOMEM;

	}

#ifdef DEBUG

	print_hex_dump(KERN_ERR, "rng shdesc@: ", DUMP_PREFIX_ADDRESS, 16, 4,

		       desc, desc_bytes(desc), 1);

#endif

	return 0;

}



static inline void rng_create_job_desc(struct caam_rng_ctx *ctx, int buf_id)

static inline int rng_create_job_desc(struct caam_rng_ctx *ctx, int buf_id)

{

	struct device *jrdev = ctx->jrdev;

	struct buf_data *bd = &ctx->bufs[buf_id];
@@ -220,12 +225,17 @@ static inline void rng_create_job_desc(struct caam_rng_ctx *ctx, int buf_id) 
			     HDR_REVERSE);



	bd->addr = dma_map_single(jrdev, bd->buf, RN_BUF_SIZE, DMA_FROM_DEVICE);

	if (dma_mapping_error(jrdev, bd->addr)) {

		dev_err(jrdev, "unable to map dst\n");

		return -ENOMEM;

	}



	append_seq_out_ptr_intlen(desc, bd->addr, RN_BUF_SIZE, 0);

#ifdef DEBUG

	print_hex_dump(KERN_ERR, "rng job desc@: ", DUMP_PREFIX_ADDRESS, 16, 4,

		       desc, desc_bytes(desc), 1);

#endif

	return 0;

}



static void caam_cleanup(struct hwrng *rng)
@@ -242,24 +252,44 @@ static void caam_cleanup(struct hwrng *rng) 
	rng_unmap_ctx(rng_ctx);

}



static void caam_init_buf(struct caam_rng_ctx *ctx, int buf_id)

static int caam_init_buf(struct caam_rng_ctx *ctx, int buf_id)

{

	struct buf_data *bd = &ctx->bufs[buf_id];

	int err;



	err = rng_create_job_desc(ctx, buf_id);

	if (err)

		return err;



	rng_create_job_desc(ctx, buf_id);

	atomic_set(&bd->empty, BUF_EMPTY);

	submit_job(ctx, buf_id == ctx->current_buf);

	wait_for_completion(&bd->filled);



	return 0;

}



static void caam_init_rng(struct caam_rng_ctx *ctx, struct device *jrdev)

static int caam_init_rng(struct caam_rng_ctx *ctx, struct device *jrdev)

{

	int err;



	ctx->jrdev = jrdev;

	rng_create_sh_desc(ctx);



	err = rng_create_sh_desc(ctx);

	if (err)

		return err;



	ctx->current_buf = 0;

	ctx->cur_buf_idx = 0;

	caam_init_buf(ctx, 0);

	caam_init_buf(ctx, 1);



	err = caam_init_buf(ctx, 0);

	if (err)

		return err;



	err = caam_init_buf(ctx, 1);

	if (err)

		return err;



	return 0;

}



static struct hwrng caam_rng = {
@@ -282,6 +312,7 @@ static int __init caam_rng_init(void) 
	struct platform_device *pdev;

	struct device *ctrldev;

	void *priv;

	int err;



	dev_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");

	if (!dev_node) {
@@ -315,7 +346,9 @@ static int __init caam_rng_init(void) 
	rng_ctx = kmalloc(sizeof(struct caam_rng_ctx), GFP_DMA);

	if (!rng_ctx)

		return -ENOMEM;

	caam_init_rng(rng_ctx, dev);

	err = caam_init_rng(rng_ctx, dev);

	if (err)

		return err;



	dev_info(dev, "registering rng-caam\n");

	return hwrng_register(&caam_rng);

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