diff options
author | Ruchika Gupta <ruchika.gupta@freescale.com> | 2014-06-23 19:50:26 +0530 |
---|---|---|
committer | Herbert Xu <herbert@gondor.apana.org.au> | 2014-06-25 21:38:41 +0800 |
commit | 1da2be33ad4c30a2b1d5fe3053b5b7f63e6e2baa (patch) | |
tree | ae35138a3ce41c356e893589cce3720a6ee0bc5c /drivers | |
parent | ef94b1d834aace7101de77c3a7c2631b9ae9c5f6 (diff) |
crypto: caam - Correct the dma mapping for sg table
At few places in caamhash and caamalg, after allocating a dmable
buffer for sg table , the buffer was being modified. As per
definition of DMA_FROM_DEVICE ,afer allocation the memory should
be treated as read-only by the driver. This patch shifts the
allocation of dmable buffer for sg table after it is populated
by the driver, making it read-only as per the DMA API's requirement.
Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/crypto/caam/caamalg.c | 8 | ||||
-rw-r--r-- | drivers/crypto/caam/caamhash.c | 40 |
2 files changed, 27 insertions, 21 deletions
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index c09ce1f040d..87d9de48a39 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -1345,8 +1345,6 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, edesc->sec4_sg_bytes = sec4_sg_bytes; edesc->sec4_sg = (void *)edesc + sizeof(struct aead_edesc) + desc_bytes; - edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, - sec4_sg_bytes, DMA_TO_DEVICE); *all_contig_ptr = all_contig; sec4_sg_index = 0; @@ -1369,6 +1367,8 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, sg_to_sec4_sg_last(req->dst, dst_nents, edesc->sec4_sg + sec4_sg_index, 0); } + edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, + sec4_sg_bytes, DMA_TO_DEVICE); return edesc; } @@ -1534,8 +1534,6 @@ static struct aead_edesc *aead_giv_edesc_alloc(struct aead_givcrypt_request edesc->sec4_sg_bytes = sec4_sg_bytes; edesc->sec4_sg = (void *)edesc + sizeof(struct aead_edesc) + desc_bytes; - edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, - sec4_sg_bytes, DMA_TO_DEVICE); *contig_ptr = contig; sec4_sg_index = 0; @@ -1559,6 +1557,8 @@ static struct aead_edesc *aead_giv_edesc_alloc(struct aead_givcrypt_request sg_to_sec4_sg_last(req->dst, dst_nents, edesc->sec4_sg + sec4_sg_index, 0); } + edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, + sec4_sg_bytes, DMA_TO_DEVICE); return edesc; } diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c index 0d9284ef96a..2ab057b0a6d 100644 --- a/drivers/crypto/caam/caamhash.c +++ b/drivers/crypto/caam/caamhash.c @@ -808,9 +808,6 @@ static int ahash_update_ctx(struct ahash_request *req) edesc->sec4_sg_bytes = sec4_sg_bytes; edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN; - edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, - sec4_sg_bytes, - DMA_TO_DEVICE); ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len, edesc->sec4_sg, DMA_BIDIRECTIONAL); @@ -839,6 +836,10 @@ static int ahash_update_ctx(struct ahash_request *req) init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | HDR_REVERSE); + edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, + sec4_sg_bytes, + DMA_TO_DEVICE); + append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len + to_hash, LDST_SGF); @@ -911,8 +912,6 @@ static int ahash_final_ctx(struct ahash_request *req) edesc->sec4_sg_bytes = sec4_sg_bytes; edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN; - edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, - sec4_sg_bytes, DMA_TO_DEVICE); edesc->src_nents = 0; ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len, edesc->sec4_sg, @@ -923,6 +922,9 @@ static int ahash_final_ctx(struct ahash_request *req) last_buflen); (edesc->sec4_sg + sec4_sg_bytes - 1)->len |= SEC4_SG_LEN_FIN; + edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, + sec4_sg_bytes, DMA_TO_DEVICE); + append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len + buflen, LDST_SGF); @@ -989,8 +991,6 @@ static int ahash_finup_ctx(struct ahash_request *req) edesc->sec4_sg_bytes = sec4_sg_bytes; edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN; - edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, - sec4_sg_bytes, DMA_TO_DEVICE); ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len, edesc->sec4_sg, DMA_TO_DEVICE); @@ -1002,6 +1002,9 @@ static int ahash_finup_ctx(struct ahash_request *req) src_map_to_sec4_sg(jrdev, req->src, src_nents, edesc->sec4_sg + sec4_sg_src_index, chained); + edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, + sec4_sg_bytes, DMA_TO_DEVICE); + append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len + buflen + req->nbytes, LDST_SGF); @@ -1056,8 +1059,6 @@ static int ahash_digest(struct ahash_request *req) } edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN; - edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, - sec4_sg_bytes, DMA_TO_DEVICE); edesc->src_nents = src_nents; edesc->chained = chained; @@ -1067,6 +1068,8 @@ static int ahash_digest(struct ahash_request *req) if (src_nents) { 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); src_dma = edesc->sec4_sg_dma; options = LDST_SGF; } else { @@ -1197,9 +1200,6 @@ static int ahash_update_no_ctx(struct ahash_request *req) edesc->sec4_sg_bytes = sec4_sg_bytes; edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN; - edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, - sec4_sg_bytes, - DMA_TO_DEVICE); state->buf_dma = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, buf, *buflen); @@ -1216,6 +1216,10 @@ static int ahash_update_no_ctx(struct ahash_request *req) init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | HDR_REVERSE); + edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, + sec4_sg_bytes, + DMA_TO_DEVICE); + append_seq_in_ptr(desc, edesc->sec4_sg_dma, to_hash, LDST_SGF); map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len); @@ -1297,8 +1301,6 @@ static int ahash_finup_no_ctx(struct ahash_request *req) edesc->sec4_sg_bytes = sec4_sg_bytes; edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN; - edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, - sec4_sg_bytes, DMA_TO_DEVICE); state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, buf, state->buf_dma, buflen, @@ -1307,6 +1309,9 @@ static int ahash_finup_no_ctx(struct ahash_request *req) src_map_to_sec4_sg(jrdev, req->src, src_nents, edesc->sec4_sg + 1, chained); + edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, + sec4_sg_bytes, DMA_TO_DEVICE); + append_seq_in_ptr(desc, edesc->sec4_sg_dma, buflen + req->nbytes, LDST_SGF); @@ -1380,13 +1385,14 @@ static int ahash_update_first(struct ahash_request *req) edesc->sec4_sg_bytes = sec4_sg_bytes; edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN; - edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, - sec4_sg_bytes, - DMA_TO_DEVICE); if (src_nents) { 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); src_dma = edesc->sec4_sg_dma; options = LDST_SGF; } else { |