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crypto: caam - use dma_map_sg() return code
dma_map_sg() might coalesce S/G entries, so use the number of S/G entries returned by it instead of what sg_nents_for_len() initially returns. Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
parent
fa0c92db1e
commit
838e0a89e3
1 changed files with 80 additions and 71 deletions
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@ -1328,9 +1328,8 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req,
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struct device *jrdev = ctx->jrdev;
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gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
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CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
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int src_nents, dst_nents = 0;
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int src_nents, mapped_src_nents, dst_nents = 0, mapped_dst_nents = 0;
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struct aead_edesc *edesc;
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int sgc;
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int sec4_sg_index, sec4_sg_len, sec4_sg_bytes;
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unsigned int authsize = ctx->authsize;
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@ -1365,60 +1364,62 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req,
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}
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}
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sec4_sg_len = src_nents > 1 ? src_nents : 0;
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sec4_sg_len += dst_nents > 1 ? dst_nents : 0;
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if (likely(req->src == req->dst)) {
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mapped_src_nents = dma_map_sg(jrdev, req->src, src_nents,
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DMA_BIDIRECTIONAL);
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if (unlikely(!mapped_src_nents)) {
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dev_err(jrdev, "unable to map source\n");
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return ERR_PTR(-ENOMEM);
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}
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} else {
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/* Cover also the case of null (zero length) input data */
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if (src_nents) {
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mapped_src_nents = dma_map_sg(jrdev, req->src,
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src_nents, DMA_TO_DEVICE);
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if (unlikely(!mapped_src_nents)) {
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dev_err(jrdev, "unable to map source\n");
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return ERR_PTR(-ENOMEM);
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}
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} else {
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mapped_src_nents = 0;
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}
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mapped_dst_nents = dma_map_sg(jrdev, req->dst, dst_nents,
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DMA_FROM_DEVICE);
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if (unlikely(!mapped_dst_nents)) {
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dev_err(jrdev, "unable to map destination\n");
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dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
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return ERR_PTR(-ENOMEM);
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}
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}
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sec4_sg_len = mapped_src_nents > 1 ? mapped_src_nents : 0;
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sec4_sg_len += mapped_dst_nents > 1 ? mapped_dst_nents : 0;
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sec4_sg_bytes = sec4_sg_len * sizeof(struct sec4_sg_entry);
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/* allocate space for base edesc and hw desc commands, link tables */
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edesc = kzalloc(sizeof(*edesc) + desc_bytes + sec4_sg_bytes,
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GFP_DMA | flags);
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if (!edesc) {
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dev_err(jrdev, "could not allocate extended descriptor\n");
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caam_unmap(jrdev, req->src, req->dst, src_nents, dst_nents, 0,
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0, 0, 0);
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return ERR_PTR(-ENOMEM);
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}
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if (likely(req->src == req->dst)) {
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sgc = dma_map_sg(jrdev, req->src, src_nents, DMA_BIDIRECTIONAL);
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if (unlikely(!sgc)) {
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dev_err(jrdev, "unable to map source\n");
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kfree(edesc);
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return ERR_PTR(-ENOMEM);
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}
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} else {
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/* Cover also the case of null (zero length) input data */
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if (src_nents) {
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sgc = dma_map_sg(jrdev, req->src, src_nents,
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DMA_TO_DEVICE);
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if (unlikely(!sgc)) {
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dev_err(jrdev, "unable to map source\n");
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kfree(edesc);
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return ERR_PTR(-ENOMEM);
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}
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}
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sgc = dma_map_sg(jrdev, req->dst, dst_nents, DMA_FROM_DEVICE);
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if (unlikely(!sgc)) {
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dev_err(jrdev, "unable to map destination\n");
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dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
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kfree(edesc);
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return ERR_PTR(-ENOMEM);
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}
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}
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edesc->src_nents = src_nents;
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edesc->dst_nents = dst_nents;
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edesc->sec4_sg = (void *)edesc + sizeof(struct aead_edesc) +
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desc_bytes;
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*all_contig_ptr = !(src_nents > 1);
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*all_contig_ptr = !(mapped_src_nents > 1);
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sec4_sg_index = 0;
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if (src_nents > 1) {
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sg_to_sec4_sg_last(req->src, src_nents,
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edesc->sec4_sg + sec4_sg_index, 0);
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sec4_sg_index += src_nents;
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if (mapped_src_nents > 1) {
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sg_to_sec4_sg_last(req->src, mapped_src_nents,
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edesc->sec4_sg + sec4_sg_index, 0);
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sec4_sg_index += mapped_src_nents;
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}
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if (dst_nents > 1) {
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sg_to_sec4_sg_last(req->dst, dst_nents,
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if (mapped_dst_nents > 1) {
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sg_to_sec4_sg_last(req->dst, mapped_dst_nents,
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edesc->sec4_sg + sec4_sg_index, 0);
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}
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@ -1616,13 +1617,12 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request
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gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
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CRYPTO_TFM_REQ_MAY_SLEEP)) ?
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GFP_KERNEL : GFP_ATOMIC;
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int src_nents, dst_nents = 0, sec4_sg_bytes;
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int src_nents, mapped_src_nents, dst_nents = 0, mapped_dst_nents = 0;
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struct ablkcipher_edesc *edesc;
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dma_addr_t iv_dma = 0;
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bool in_contig;
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int sgc;
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int ivsize = crypto_ablkcipher_ivsize(ablkcipher);
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int dst_sg_idx, sec4_sg_ents;
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int dst_sg_idx, sec4_sg_ents, sec4_sg_bytes;
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src_nents = sg_nents_for_len(req->src, req->nbytes);
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if (unlikely(src_nents < 0)) {
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@ -1641,20 +1641,23 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request
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}
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if (likely(req->src == req->dst)) {
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sgc = dma_map_sg(jrdev, req->src, src_nents, DMA_BIDIRECTIONAL);
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if (unlikely(!sgc)) {
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mapped_src_nents = dma_map_sg(jrdev, req->src, src_nents,
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DMA_BIDIRECTIONAL);
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if (unlikely(!mapped_src_nents)) {
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dev_err(jrdev, "unable to map source\n");
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return ERR_PTR(-ENOMEM);
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}
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} else {
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sgc = dma_map_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
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if (unlikely(!sgc)) {
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mapped_src_nents = dma_map_sg(jrdev, req->src, src_nents,
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DMA_TO_DEVICE);
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if (unlikely(!mapped_src_nents)) {
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dev_err(jrdev, "unable to map source\n");
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return ERR_PTR(-ENOMEM);
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}
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sgc = dma_map_sg(jrdev, req->dst, dst_nents, DMA_FROM_DEVICE);
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if (unlikely(!sgc)) {
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mapped_dst_nents = dma_map_sg(jrdev, req->dst, dst_nents,
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DMA_FROM_DEVICE);
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if (unlikely(!mapped_dst_nents)) {
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dev_err(jrdev, "unable to map destination\n");
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dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
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return ERR_PTR(-ENOMEM);
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@ -1669,15 +1672,16 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request
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return ERR_PTR(-ENOMEM);
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}
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if (src_nents == 1 && iv_dma + ivsize == sg_dma_address(req->src)) {
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if (mapped_src_nents == 1 &&
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iv_dma + ivsize == sg_dma_address(req->src)) {
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in_contig = true;
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sec4_sg_ents = 0;
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} else {
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in_contig = false;
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sec4_sg_ents = 1 + src_nents;
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sec4_sg_ents = 1 + mapped_src_nents;
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}
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dst_sg_idx = sec4_sg_ents;
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sec4_sg_ents += dst_nents > 1 ? dst_nents : 0;
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sec4_sg_ents += mapped_dst_nents > 1 ? mapped_dst_nents : 0;
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sec4_sg_bytes = sec4_sg_ents * sizeof(struct sec4_sg_entry);
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/* allocate space for base edesc and hw desc commands, link tables */
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@ -1698,13 +1702,13 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request
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if (!in_contig) {
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dma_to_sec4_sg_one(edesc->sec4_sg, iv_dma, ivsize, 0);
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sg_to_sec4_sg_last(req->src, src_nents,
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sg_to_sec4_sg_last(req->src, mapped_src_nents,
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edesc->sec4_sg + 1, 0);
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}
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if (dst_nents > 1) {
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sg_to_sec4_sg_last(req->dst, dst_nents,
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edesc->sec4_sg + dst_sg_idx, 0);
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if (mapped_dst_nents > 1) {
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sg_to_sec4_sg_last(req->dst, mapped_dst_nents,
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edesc->sec4_sg + dst_sg_idx, 0);
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}
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edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
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@ -1819,13 +1823,12 @@ static struct ablkcipher_edesc *ablkcipher_giv_edesc_alloc(
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gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
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CRYPTO_TFM_REQ_MAY_SLEEP)) ?
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GFP_KERNEL : GFP_ATOMIC;
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int src_nents, dst_nents, sec4_sg_bytes;
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int src_nents, mapped_src_nents, dst_nents, mapped_dst_nents;
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struct ablkcipher_edesc *edesc;
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dma_addr_t iv_dma = 0;
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bool out_contig;
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int sgc;
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int ivsize = crypto_ablkcipher_ivsize(ablkcipher);
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int dst_sg_idx, sec4_sg_ents;
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int dst_sg_idx, sec4_sg_ents, sec4_sg_bytes;
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src_nents = sg_nents_for_len(req->src, req->nbytes);
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if (unlikely(src_nents < 0)) {
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@ -1835,16 +1838,19 @@ static struct ablkcipher_edesc *ablkcipher_giv_edesc_alloc(
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}
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if (likely(req->src == req->dst)) {
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sgc = dma_map_sg(jrdev, req->src, src_nents, DMA_BIDIRECTIONAL);
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if (unlikely(!sgc)) {
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mapped_src_nents = dma_map_sg(jrdev, req->src, src_nents,
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DMA_BIDIRECTIONAL);
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if (unlikely(!mapped_src_nents)) {
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dev_err(jrdev, "unable to map source\n");
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return ERR_PTR(-ENOMEM);
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}
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dst_nents = src_nents;
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mapped_dst_nents = src_nents;
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} else {
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sgc = dma_map_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
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if (unlikely(!sgc)) {
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mapped_src_nents = dma_map_sg(jrdev, req->src, src_nents,
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DMA_TO_DEVICE);
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if (unlikely(!mapped_src_nents)) {
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dev_err(jrdev, "unable to map source\n");
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return ERR_PTR(-ENOMEM);
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}
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@ -1856,8 +1862,9 @@ static struct ablkcipher_edesc *ablkcipher_giv_edesc_alloc(
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return ERR_PTR(dst_nents);
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}
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sgc = dma_map_sg(jrdev, req->dst, dst_nents, DMA_FROM_DEVICE);
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if (unlikely(!sgc)) {
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mapped_dst_nents = dma_map_sg(jrdev, req->dst, dst_nents,
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DMA_FROM_DEVICE);
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if (unlikely(!mapped_dst_nents)) {
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dev_err(jrdev, "unable to map destination\n");
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dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
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return ERR_PTR(-ENOMEM);
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@ -1876,13 +1883,14 @@ static struct ablkcipher_edesc *ablkcipher_giv_edesc_alloc(
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return ERR_PTR(-ENOMEM);
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}
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sec4_sg_ents = src_nents > 1 ? src_nents : 0;
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sec4_sg_ents = mapped_src_nents > 1 ? mapped_src_nents : 0;
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dst_sg_idx = sec4_sg_ents;
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if (dst_nents == 1 && iv_dma + ivsize == sg_dma_address(req->dst)) {
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if (mapped_dst_nents == 1 &&
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iv_dma + ivsize == sg_dma_address(req->dst)) {
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out_contig = true;
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} else {
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out_contig = false;
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sec4_sg_ents += 1 + dst_nents;
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sec4_sg_ents += 1 + mapped_dst_nents;
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}
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/* allocate space for base edesc and hw desc commands, link tables */
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@ -1902,13 +1910,14 @@ static struct ablkcipher_edesc *ablkcipher_giv_edesc_alloc(
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edesc->sec4_sg = (void *)edesc + sizeof(struct ablkcipher_edesc) +
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desc_bytes;
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if (src_nents > 1)
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sg_to_sec4_sg_last(req->src, src_nents, edesc->sec4_sg, 0);
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if (mapped_src_nents > 1)
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sg_to_sec4_sg_last(req->src, mapped_src_nents, edesc->sec4_sg,
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0);
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if (!out_contig) {
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dma_to_sec4_sg_one(edesc->sec4_sg + dst_sg_idx,
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iv_dma, ivsize, 0);
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sg_to_sec4_sg_last(req->dst, dst_nents,
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sg_to_sec4_sg_last(req->dst, mapped_dst_nents,
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edesc->sec4_sg + dst_sg_idx + 1, 0);
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}
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