crypto: caam - use mapped_{src,dst}_nents for descriptor
The mapped_{src,dst}_nents _returned_ from the dma_map_sg
call (which could be less than src/dst_nents) have to be
used to generate the job descriptors.
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Iuliana Prodan
Herbert Xu
Родитель
554c42b4ef
Коммит
eff9771d51
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@ -252,9 +252,9 @@ static struct rsa_edesc *rsa_edesc_alloc(struct akcipher_request *req,
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gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
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GFP_KERNEL : GFP_ATOMIC;
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int sg_flags = (flags == GFP_ATOMIC) ? SG_MITER_ATOMIC : 0;
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int sgc;
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int sec4_sg_index, sec4_sg_len = 0, sec4_sg_bytes;
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int src_nents, dst_nents;
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int mapped_src_nents, mapped_dst_nents;
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unsigned int diff_size = 0;
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int lzeros;
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@ -285,13 +285,27 @@ static struct rsa_edesc *rsa_edesc_alloc(struct akcipher_request *req,
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req_ctx->fixup_src_len);
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dst_nents = sg_nents_for_len(req->dst, req->dst_len);
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if (!diff_size && src_nents == 1)
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mapped_src_nents = dma_map_sg(dev, req_ctx->fixup_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(dev, "unable to map source\n");
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return ERR_PTR(-ENOMEM);
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}
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mapped_dst_nents = dma_map_sg(dev, 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(dev, "unable to map destination\n");
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goto src_fail;
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}
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if (!diff_size && mapped_src_nents == 1)
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sec4_sg_len = 0; /* no need for an input hw s/g table */
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else
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sec4_sg_len = src_nents + !!diff_size;
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sec4_sg_len = mapped_src_nents + !!diff_size;
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sec4_sg_index = sec4_sg_len;
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if (dst_nents > 1)
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sec4_sg_len += pad_sg_nents(dst_nents);
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if (mapped_dst_nents > 1)
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sec4_sg_len += pad_sg_nents(mapped_dst_nents);
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else
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sec4_sg_len = pad_sg_nents(sec4_sg_len);
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@ -301,19 +315,7 @@ static struct rsa_edesc *rsa_edesc_alloc(struct akcipher_request *req,
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edesc = kzalloc(sizeof(*edesc) + desclen + sec4_sg_bytes,
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GFP_DMA | flags);
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if (!edesc)
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return ERR_PTR(-ENOMEM);
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sgc = dma_map_sg(dev, req_ctx->fixup_src, src_nents, DMA_TO_DEVICE);
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if (unlikely(!sgc)) {
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dev_err(dev, "unable to map source\n");
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goto src_fail;
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}
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sgc = dma_map_sg(dev, req->dst, dst_nents, DMA_FROM_DEVICE);
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if (unlikely(!sgc)) {
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dev_err(dev, "unable to map destination\n");
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goto dst_fail;
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}
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edesc->sec4_sg = (void *)edesc + sizeof(*edesc) + desclen;
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if (diff_size)
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@ -324,7 +326,7 @@ static struct rsa_edesc *rsa_edesc_alloc(struct akcipher_request *req,
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sg_to_sec4_sg_last(req_ctx->fixup_src, req_ctx->fixup_src_len,
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edesc->sec4_sg + !!diff_size, 0);
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if (dst_nents > 1)
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if (mapped_dst_nents > 1)
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sg_to_sec4_sg_last(req->dst, req->dst_len,
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edesc->sec4_sg + sec4_sg_index, 0);
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@ -335,6 +337,9 @@ static struct rsa_edesc *rsa_edesc_alloc(struct akcipher_request *req,
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if (!sec4_sg_bytes)
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return edesc;
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edesc->mapped_src_nents = mapped_src_nents;
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edesc->mapped_dst_nents = mapped_dst_nents;
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edesc->sec4_sg_dma = dma_map_single(dev, edesc->sec4_sg,
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sec4_sg_bytes, DMA_TO_DEVICE);
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if (dma_mapping_error(dev, edesc->sec4_sg_dma)) {
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@ -351,11 +356,11 @@ static struct rsa_edesc *rsa_edesc_alloc(struct akcipher_request *req,
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return edesc;
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sec4_sg_fail:
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dma_unmap_sg(dev, req->dst, dst_nents, DMA_FROM_DEVICE);
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dst_fail:
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dma_unmap_sg(dev, req_ctx->fixup_src, src_nents, DMA_TO_DEVICE);
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src_fail:
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kfree(edesc);
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dst_fail:
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dma_unmap_sg(dev, req->dst, dst_nents, DMA_FROM_DEVICE);
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src_fail:
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dma_unmap_sg(dev, req_ctx->fixup_src, src_nents, DMA_TO_DEVICE);
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return ERR_PTR(-ENOMEM);
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}
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@ -383,15 +388,15 @@ static int set_rsa_pub_pdb(struct akcipher_request *req,
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return -ENOMEM;
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}
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if (edesc->src_nents > 1) {
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if (edesc->mapped_src_nents > 1) {
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pdb->sgf |= RSA_PDB_SGF_F;
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pdb->f_dma = edesc->sec4_sg_dma;
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sec4_sg_index += edesc->src_nents;
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sec4_sg_index += edesc->mapped_src_nents;
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} else {
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pdb->f_dma = sg_dma_address(req_ctx->fixup_src);
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}
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if (edesc->dst_nents > 1) {
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if (edesc->mapped_dst_nents > 1) {
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pdb->sgf |= RSA_PDB_SGF_G;
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pdb->g_dma = edesc->sec4_sg_dma +
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sec4_sg_index * sizeof(struct sec4_sg_entry);
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@ -428,17 +433,18 @@ static int set_rsa_priv_f1_pdb(struct akcipher_request *req,
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return -ENOMEM;
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}
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if (edesc->src_nents > 1) {
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if (edesc->mapped_src_nents > 1) {
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pdb->sgf |= RSA_PRIV_PDB_SGF_G;
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pdb->g_dma = edesc->sec4_sg_dma;
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sec4_sg_index += edesc->src_nents;
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sec4_sg_index += edesc->mapped_src_nents;
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} else {
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struct caam_rsa_req_ctx *req_ctx = akcipher_request_ctx(req);
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pdb->g_dma = sg_dma_address(req_ctx->fixup_src);
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}
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if (edesc->dst_nents > 1) {
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if (edesc->mapped_dst_nents > 1) {
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pdb->sgf |= RSA_PRIV_PDB_SGF_F;
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pdb->f_dma = edesc->sec4_sg_dma +
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sec4_sg_index * sizeof(struct sec4_sg_entry);
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@ -493,17 +499,17 @@ static int set_rsa_priv_f2_pdb(struct akcipher_request *req,
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goto unmap_tmp1;
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}
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if (edesc->src_nents > 1) {
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if (edesc->mapped_src_nents > 1) {
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pdb->sgf |= RSA_PRIV_PDB_SGF_G;
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pdb->g_dma = edesc->sec4_sg_dma;
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sec4_sg_index += edesc->src_nents;
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sec4_sg_index += edesc->mapped_src_nents;
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} else {
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struct caam_rsa_req_ctx *req_ctx = akcipher_request_ctx(req);
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pdb->g_dma = sg_dma_address(req_ctx->fixup_src);
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}
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if (edesc->dst_nents > 1) {
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if (edesc->mapped_dst_nents > 1) {
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pdb->sgf |= RSA_PRIV_PDB_SGF_F;
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pdb->f_dma = edesc->sec4_sg_dma +
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sec4_sg_index * sizeof(struct sec4_sg_entry);
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@ -582,17 +588,17 @@ static int set_rsa_priv_f3_pdb(struct akcipher_request *req,
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goto unmap_tmp1;
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}
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if (edesc->src_nents > 1) {
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if (edesc->mapped_src_nents > 1) {
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pdb->sgf |= RSA_PRIV_PDB_SGF_G;
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pdb->g_dma = edesc->sec4_sg_dma;
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sec4_sg_index += edesc->src_nents;
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sec4_sg_index += edesc->mapped_src_nents;
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} else {
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struct caam_rsa_req_ctx *req_ctx = akcipher_request_ctx(req);
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pdb->g_dma = sg_dma_address(req_ctx->fixup_src);
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}
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if (edesc->dst_nents > 1) {
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if (edesc->mapped_dst_nents > 1) {
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pdb->sgf |= RSA_PRIV_PDB_SGF_F;
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pdb->f_dma = edesc->sec4_sg_dma +
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sec4_sg_index * sizeof(struct sec4_sg_entry);
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@ -112,8 +112,10 @@ struct caam_rsa_req_ctx {
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/**
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* rsa_edesc - s/w-extended rsa descriptor
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* @src_nents : number of segments in input scatterlist
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* @dst_nents : number of segments in output scatterlist
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* @src_nents : number of segments in input s/w scatterlist
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* @dst_nents : number of segments in output s/w scatterlist
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* @mapped_src_nents: number of segments in input h/w link table
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* @mapped_dst_nents: number of segments in output h/w link table
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* @sec4_sg_bytes : length of h/w link table
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* @sec4_sg_dma : dma address of h/w link table
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* @sec4_sg : pointer to h/w link table
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@ -123,6 +125,8 @@ struct caam_rsa_req_ctx {
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struct rsa_edesc {
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int src_nents;
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int dst_nents;
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int mapped_src_nents;
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int mapped_dst_nents;
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int sec4_sg_bytes;
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dma_addr_t sec4_sg_dma;
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struct sec4_sg_entry *sec4_sg;
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