Add support to submit the following ablkcipher algorithms
via the DPSECI backend:
cbc({aes,des,des3_ede})
ctr(aes), rfc3686(ctr(aes))
xts(aes)
Signed-off-by: Horia Geantă <horia.geanta@xxxxxxx>
---
drivers/crypto/caam/Kconfig | 1 +
drivers/crypto/caam/caamalg_qi2.c | 816 ++++++++++++++++++++++++++++++++++++++
drivers/crypto/caam/caamalg_qi2.h | 23 +-
3 files changed, 839 insertions(+), 1 deletion(-)
diff --git a/drivers/crypto/caam/Kconfig b/drivers/crypto/caam/Kconfig
index e45d39d9007e..eb202e59c4fa 100644
--- a/drivers/crypto/caam/Kconfig
+++ b/drivers/crypto/caam/Kconfig
@@ -159,6 +159,7 @@ config CRYPTO_DEV_FSL_DPAA2_CAAM
tristate "QorIQ DPAA2 CAAM (DPSECI) driver"
depends on FSL_MC_DPIO
select CRYPTO_DEV_FSL_CAAM_COMMON
+ select CRYPTO_BLKCIPHER
select CRYPTO_AUTHENC
select CRYPTO_AEAD
---help---
diff --git a/drivers/crypto/caam/caamalg_qi2.c b/drivers/crypto/caam/caamalg_qi2.c
index 9dc5e1184e80..f32c518bc680 100644
--- a/drivers/crypto/caam/caamalg_qi2.c
+++ b/drivers/crypto/caam/caamalg_qi2.c
@@ -1047,6 +1047,457 @@ static int rfc4543_setkey(struct crypto_aead *aead,
return ret;
}
+static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
+ const u8 *key, unsigned int keylen)
+{
+ struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher);
+ struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablkcipher);
+ const char *alg_name = crypto_tfm_alg_name(tfm);
+ struct device *dev = ctx->dev;
+ struct caam_flc *flc;
+ unsigned int ivsize = crypto_ablkcipher_ivsize(ablkcipher);
+ u32 *desc;
+ u32 ctx1_iv_off = 0;
+ const bool ctr_mode = ((ctx->cdata.algtype & OP_ALG_AAI_MASK) ==
+ OP_ALG_AAI_CTR_MOD128);
+ const bool is_rfc3686 = (ctr_mode && strstr(alg_name, "rfc3686"));
+
+ memcpy(ctx->key, key, keylen);
+#ifdef DEBUG
+ print_hex_dump(KERN_ERR, "key in @" __stringify(__LINE__)": ",
+ DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1);
+#endif
+ /*
+ * AES-CTR needs to load IV in CONTEXT1 reg
+ * at an offset of 128bits (16bytes)
+ * CONTEXT1[255:128] = IV
+ */
+ if (ctr_mode)
+ ctx1_iv_off = 16;
+
+ /*
+ * RFC3686 specific:
+ * | CONTEXT1[255:128] = {NONCE, IV, COUNTER}
+ * | *key = {KEY, NONCE}
+ */
+ if (is_rfc3686) {
+ ctx1_iv_off = 16 + CTR_RFC3686_NONCE_SIZE;
+ keylen -= CTR_RFC3686_NONCE_SIZE;
+ }
+
+ ctx->key_dma = dma_map_single(dev, ctx->key, keylen, DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, ctx->key_dma)) {
+ dev_err(dev, "unable to map key i/o memory\n");
+ return -ENOMEM;
+ }
+ ctx->cdata.keylen = keylen;
+ ctx->cdata.key_virt = ctx->key;
+ ctx->cdata.key_inline = true;
+
+ /* ablkcipher_encrypt shared descriptor */
+ flc = &ctx->flc[ENCRYPT];
+ desc = flc->sh_desc;
+
+ cnstr_shdsc_ablkcipher_encap(desc, &ctx->cdata, ivsize,
+ is_rfc3686, ctx1_iv_off);
+
+ flc->flc[1] = desc_len(desc); /* SDL */
+ flc->flc_dma = dma_map_single(dev, flc, sizeof(flc->flc) +
+ desc_bytes(desc), DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, flc->flc_dma)) {
+ dev_err(dev, "unable to map shared descriptor\n");
+ return -ENOMEM;
+ }
+
+ /* ablkcipher_decrypt shared descriptor */
+ flc = &ctx->flc[DECRYPT];
+ desc = flc->sh_desc;
+
+ cnstr_shdsc_ablkcipher_decap(desc, &ctx->cdata, ivsize,
+ is_rfc3686, ctx1_iv_off);
+
+ flc->flc[1] = desc_len(desc); /* SDL */
+ flc->flc_dma = dma_map_single(dev, flc, sizeof(flc->flc) +
+ desc_bytes(desc), DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, flc->flc_dma)) {
+ dev_err(dev, "unable to map shared descriptor\n");
+ return -ENOMEM;
+ }
+
+ /* ablkcipher_givencrypt shared descriptor */
+ flc = &ctx->flc[GIVENCRYPT];
+ desc = flc->sh_desc;
+
+ cnstr_shdsc_ablkcipher_givencap(desc, &ctx->cdata,
+ ivsize, is_rfc3686, ctx1_iv_off);
+
+ flc->flc[1] = desc_len(desc); /* SDL */
+ flc->flc_dma = dma_map_single(dev, flc, sizeof(flc->flc) +
+ desc_bytes(desc), DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, flc->flc_dma)) {
+ dev_err(dev, "unable to map shared descriptor\n");
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
+ const u8 *key, unsigned int keylen)
+{
+ struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher);
+ struct device *dev = ctx->dev;
+ struct caam_flc *flc;
+ u32 *desc;
+
+ if (keylen != 2 * AES_MIN_KEY_SIZE && keylen != 2 * AES_MAX_KEY_SIZE) {
+ dev_err(dev, "key size mismatch\n");
+ crypto_ablkcipher_set_flags(ablkcipher,
+ CRYPTO_TFM_RES_BAD_KEY_LEN);
+ return -EINVAL;
+ }
+
+ memcpy(ctx->key, key, keylen);
+ ctx->key_dma = dma_map_single(dev, ctx->key, keylen, DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, ctx->key_dma)) {
+ dev_err(dev, "unable to map key i/o memory\n");
+ return -ENOMEM;
+ }
+ ctx->cdata.keylen = keylen;
+ ctx->cdata.key_virt = ctx->key;
+ ctx->cdata.key_inline = true;
+
+ /* xts_ablkcipher_encrypt shared descriptor */
+ flc = &ctx->flc[ENCRYPT];
+ desc = flc->sh_desc;
+ cnstr_shdsc_xts_ablkcipher_encap(desc, &ctx->cdata);
+
+ flc->flc[1] = desc_len(desc); /* SDL */
+ flc->flc_dma = dma_map_single(dev, flc, sizeof(flc->flc) +
+ desc_bytes(desc), DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, flc->flc_dma)) {
+ dev_err(dev, "unable to map shared descriptor\n");
+ return -ENOMEM;
+ }
+
+ /* xts_ablkcipher_decrypt shared descriptor */
+ flc = &ctx->flc[DECRYPT];
+ desc = flc->sh_desc;
+
+ cnstr_shdsc_xts_ablkcipher_decap(desc, &ctx->cdata);
+
+ flc->flc[1] = desc_len(desc); /* SDL */
+ flc->flc_dma = dma_map_single(dev, flc, sizeof(flc->flc) +
+ desc_bytes(desc), DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, flc->flc_dma)) {
+ dev_err(dev, "unable to map shared descriptor\n");
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request
+ *req, bool encrypt)
+{
+ struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
+ struct caam_request *req_ctx = ablkcipher_request_ctx(req);
+ struct dpaa2_fl_entry *in_fle = &req_ctx->fd_flt[1];
+ struct dpaa2_fl_entry *out_fle = &req_ctx->fd_flt[0];
+ struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher);
+ struct device *dev = ctx->dev;
+ gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
+ CRYPTO_TFM_REQ_MAY_SLEEP)) ?
+ GFP_KERNEL : GFP_ATOMIC;
+ int src_nents, mapped_src_nents, dst_nents = 0, mapped_dst_nents = 0;
+ struct ablkcipher_edesc *edesc;
+ dma_addr_t iv_dma;
+ bool in_contig;
+ int ivsize = crypto_ablkcipher_ivsize(ablkcipher);
+ int dst_sg_idx, qm_sg_ents;
+ struct dpaa2_sg_entry *sg_table;
+ enum optype op_type = encrypt ? ENCRYPT : DECRYPT;
+
+ src_nents = sg_nents_for_len(req->src, req->nbytes);
+ if (unlikely(src_nents < 0)) {
+ dev_err(dev, "Insufficient bytes (%d) in src S/G\n",
+ req->nbytes);
+ return ERR_PTR(src_nents);
+ }
+
+ if (unlikely(req->dst != req->src)) {
+ dst_nents = sg_nents_for_len(req->dst, req->nbytes);
+ if (unlikely(dst_nents < 0)) {
+ dev_err(dev, "Insufficient bytes (%d) in dst S/G\n",
+ req->nbytes);
+ return ERR_PTR(dst_nents);
+ }
+
+ mapped_src_nents = dma_map_sg(dev, req->src, src_nents,
+ DMA_TO_DEVICE);
+ if (unlikely(!mapped_src_nents)) {
+ dev_err(dev, "unable to map source\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ mapped_dst_nents = dma_map_sg(dev, req->dst, dst_nents,
+ DMA_FROM_DEVICE);
+ if (unlikely(!mapped_dst_nents)) {
+ dev_err(dev, "unable to map destination\n");
+ dma_unmap_sg(dev, req->src, src_nents, DMA_TO_DEVICE);
+ return ERR_PTR(-ENOMEM);
+ }
+ } else {
+ mapped_src_nents = dma_map_sg(dev, req->src, src_nents,
+ DMA_BIDIRECTIONAL);
+ if (unlikely(!mapped_src_nents)) {
+ dev_err(dev, "unable to map source\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ }
+
+ iv_dma = dma_map_single(dev, req->info, ivsize, DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, iv_dma)) {
+ dev_err(dev, "unable to map IV\n");
+ caam_unmap(dev, req->src, req->dst, src_nents, dst_nents, 0,
+ 0, 0, 0, 0);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ if (mapped_src_nents == 1 &&
+ iv_dma + ivsize == sg_dma_address(req->src)) {
+ in_contig = true;
+ qm_sg_ents = 0;
+ } else {
+ in_contig = false;
+ qm_sg_ents = 1 + mapped_src_nents;
+ }
+ dst_sg_idx = qm_sg_ents;
+
+ qm_sg_ents += mapped_dst_nents > 1 ? mapped_dst_nents : 0;
+ if (unlikely(qm_sg_ents > CAAM_QI_MAX_ABLKCIPHER_SG)) {
+ dev_err(dev, "Insufficient S/G entries: %d > %lu\n",
+ qm_sg_ents, CAAM_QI_MAX_ABLKCIPHER_SG);
+ caam_unmap(dev, req->src, req->dst, src_nents, dst_nents,
+ iv_dma, ivsize, op_type, 0, 0);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ /* allocate space for base edesc and link tables */
+ edesc = qi_cache_alloc(GFP_DMA | flags);
+ if (unlikely(!edesc)) {
+ dev_err(dev, "could not allocate extended descriptor\n");
+ caam_unmap(dev, req->src, req->dst, src_nents, dst_nents,
+ iv_dma, ivsize, op_type, 0, 0);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ edesc->src_nents = src_nents;
+ edesc->dst_nents = dst_nents;
+ edesc->iv_dma = iv_dma;
+ sg_table = &edesc->sgt[0];
+ edesc->qm_sg_bytes = qm_sg_ents * sizeof(*sg_table);
+
+ if (!in_contig) {
+ dma_to_qm_sg_one(sg_table, iv_dma, ivsize, 0);
+ sg_to_qm_sg_last(req->src, mapped_src_nents, sg_table + 1, 0);
+ }
+
+ if (mapped_dst_nents > 1)
+ sg_to_qm_sg_last(req->dst, mapped_dst_nents, sg_table +
+ dst_sg_idx, 0);
+
+ edesc->qm_sg_dma = dma_map_single(dev, sg_table, edesc->qm_sg_bytes,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, edesc->qm_sg_dma)) {
+ dev_err(dev, "unable to map S/G table\n");
+ caam_unmap(dev, req->src, req->dst, src_nents, dst_nents,
+ iv_dma, ivsize, op_type, 0, 0);
+ qi_cache_free(edesc);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ memset(&req_ctx->fd_flt, 0, sizeof(req_ctx->fd_flt));
+ dpaa2_fl_set_final(in_fle, true);
+ dpaa2_fl_set_len(in_fle, req->nbytes + ivsize);
+ dpaa2_fl_set_len(out_fle, req->nbytes);
+
+ if (!in_contig) {
+ dpaa2_fl_set_format(in_fle, dpaa2_fl_sg);
+ dpaa2_fl_set_addr(in_fle, edesc->qm_sg_dma);
+ } else {
+ dpaa2_fl_set_format(in_fle, dpaa2_fl_single);
+ dpaa2_fl_set_addr(in_fle, iv_dma);
+ }
+
+ if (req->src == req->dst) {
+ if (!in_contig) {
+ dpaa2_fl_set_format(out_fle, dpaa2_fl_sg);
+ dpaa2_fl_set_addr(out_fle, edesc->qm_sg_dma +
+ sizeof(*sg_table));
+ } else {
+ dpaa2_fl_set_format(out_fle, dpaa2_fl_single);
+ dpaa2_fl_set_addr(out_fle, sg_dma_address(req->src));
+ }
+ } else if (mapped_dst_nents > 1) {
+ dpaa2_fl_set_format(out_fle, dpaa2_fl_sg);
+ dpaa2_fl_set_addr(out_fle, edesc->qm_sg_dma + dst_sg_idx *
+ sizeof(*sg_table));
+ } else {
+ dpaa2_fl_set_format(out_fle, dpaa2_fl_single);
+ dpaa2_fl_set_addr(out_fle, sg_dma_address(req->dst));
+ }
+
+ return edesc;
+}
+
+static struct ablkcipher_edesc *ablkcipher_giv_edesc_alloc(
+ struct skcipher_givcrypt_request *greq)
+{
+ struct ablkcipher_request *req = &greq->creq;
+ struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
+ struct caam_request *req_ctx = ablkcipher_request_ctx(req);
+ struct dpaa2_fl_entry *in_fle = &req_ctx->fd_flt[1];
+ struct dpaa2_fl_entry *out_fle = &req_ctx->fd_flt[0];
+ struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher);
+ struct device *dev = ctx->dev;
+ gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
+ CRYPTO_TFM_REQ_MAY_SLEEP)) ?
+ GFP_KERNEL : GFP_ATOMIC;
+ int src_nents, mapped_src_nents, dst_nents, mapped_dst_nents;
+ struct ablkcipher_edesc *edesc;
+ dma_addr_t iv_dma;
+ bool out_contig;
+ int ivsize = crypto_ablkcipher_ivsize(ablkcipher);
+ struct dpaa2_sg_entry *sg_table;
+ int dst_sg_idx, qm_sg_ents;
+
+ src_nents = sg_nents_for_len(req->src, req->nbytes);
+ if (unlikely(src_nents < 0)) {
+ dev_err(dev, "Insufficient bytes (%d) in src S/G\n",
+ req->nbytes);
+ return ERR_PTR(src_nents);
+ }
+
+ if (unlikely(req->dst != req->src)) {
+ dst_nents = sg_nents_for_len(req->dst, req->nbytes);
+ if (unlikely(dst_nents < 0)) {
+ dev_err(dev, "Insufficient bytes (%d) in dst S/G\n",
+ req->nbytes);
+ return ERR_PTR(dst_nents);
+ }
+
+ mapped_src_nents = dma_map_sg(dev, req->src, src_nents,
+ DMA_TO_DEVICE);
+ if (unlikely(!mapped_src_nents)) {
+ dev_err(dev, "unable to map source\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ mapped_dst_nents = dma_map_sg(dev, req->dst, dst_nents,
+ DMA_FROM_DEVICE);
+ if (unlikely(!mapped_dst_nents)) {
+ dev_err(dev, "unable to map destination\n");
+ dma_unmap_sg(dev, req->src, src_nents, DMA_TO_DEVICE);
+ return ERR_PTR(-ENOMEM);
+ }
+ } else {
+ mapped_src_nents = dma_map_sg(dev, req->src, src_nents,
+ DMA_BIDIRECTIONAL);
+ if (unlikely(!mapped_src_nents)) {
+ dev_err(dev, "unable to map source\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ dst_nents = src_nents;
+ mapped_dst_nents = src_nents;
+ }
+
+ iv_dma = dma_map_single(dev, greq->giv, ivsize, DMA_FROM_DEVICE);
+ if (dma_mapping_error(dev, iv_dma)) {
+ dev_err(dev, "unable to map IV\n");
+ caam_unmap(dev, req->src, req->dst, src_nents, dst_nents, 0,
+ 0, 0, 0, 0);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ qm_sg_ents = mapped_src_nents > 1 ? mapped_src_nents : 0;
+ dst_sg_idx = qm_sg_ents;
+ if (mapped_dst_nents == 1 &&
+ iv_dma + ivsize == sg_dma_address(req->dst)) {
+ out_contig = true;
+ } else {
+ out_contig = false;
+ qm_sg_ents += 1 + mapped_dst_nents;
+ }
+
+ if (unlikely(qm_sg_ents > CAAM_QI_MAX_ABLKCIPHER_SG)) {
+ dev_err(dev, "Insufficient S/G entries: %d > %lu\n",
+ qm_sg_ents, CAAM_QI_MAX_ABLKCIPHER_SG);
+ caam_unmap(dev, req->src, req->dst, src_nents, dst_nents,
+ iv_dma, ivsize, GIVENCRYPT, 0, 0);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ /* allocate space for base edesc and link tables */
+ edesc = qi_cache_alloc(GFP_DMA | flags);
+ if (!edesc) {
+ dev_err(dev, "could not allocate extended descriptor\n");
+ caam_unmap(dev, req->src, req->dst, src_nents, dst_nents,
+ iv_dma, ivsize, GIVENCRYPT, 0, 0);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ edesc->src_nents = src_nents;
+ edesc->dst_nents = dst_nents;
+ edesc->iv_dma = iv_dma;
+ sg_table = &edesc->sgt[0];
+ edesc->qm_sg_bytes = qm_sg_ents * sizeof(*sg_table);
+
+ if (mapped_src_nents > 1)
+ sg_to_qm_sg_last(req->src, mapped_src_nents, sg_table, 0);
+
+ if (!out_contig) {
+ dma_to_qm_sg_one(sg_table + dst_sg_idx, iv_dma, ivsize, 0);
+ sg_to_qm_sg_last(req->dst, mapped_dst_nents, sg_table +
+ dst_sg_idx + 1, 0);
+ }
+
+ edesc->qm_sg_dma = dma_map_single(dev, sg_table, edesc->qm_sg_bytes,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, edesc->qm_sg_dma)) {
+ dev_err(dev, "unable to map S/G table\n");
+ caam_unmap(dev, req->src, req->dst, src_nents, dst_nents,
+ iv_dma, ivsize, GIVENCRYPT, 0, 0);
+ qi_cache_free(edesc);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ memset(&req_ctx->fd_flt, 0, sizeof(req_ctx->fd_flt));
+ dpaa2_fl_set_final(in_fle, true);
+ dpaa2_fl_set_len(in_fle, req->nbytes);
+ dpaa2_fl_set_len(out_fle, ivsize + req->nbytes);
+
+ if (mapped_src_nents > 1) {
+ dpaa2_fl_set_format(in_fle, dpaa2_fl_sg);
+ dpaa2_fl_set_addr(in_fle, edesc->qm_sg_dma);
+ } else {
+ dpaa2_fl_set_format(in_fle, dpaa2_fl_single);
+ dpaa2_fl_set_addr(in_fle, sg_dma_address(req->src));
+ }
+
+ if (!out_contig) {
+ dpaa2_fl_set_format(out_fle, dpaa2_fl_sg);
+ dpaa2_fl_set_addr(out_fle, edesc->qm_sg_dma + dst_sg_idx *
+ sizeof(*sg_table));
+ } else {
+ dpaa2_fl_set_format(out_fle, dpaa2_fl_single);
+ dpaa2_fl_set_addr(out_fle, sg_dma_address(req->dst));
+ }
+
+ return edesc;
+}
+
static void aead_unmap(struct device *dev, struct aead_edesc *edesc,
struct aead_request *req)
{
@@ -1060,6 +1511,19 @@ static void aead_unmap(struct device *dev, struct aead_edesc *edesc,
dma_unmap_single(dev, edesc->assoclen_dma, 4, DMA_TO_DEVICE);
}
+static void ablkcipher_unmap(struct device *dev,
+ struct ablkcipher_edesc *edesc,
+ struct ablkcipher_request *req)
+{
+ struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
+ int ivsize = crypto_ablkcipher_ivsize(ablkcipher);
+ struct caam_request *caam_req = ablkcipher_request_ctx(req);
+
+ caam_unmap(dev, req->src, req->dst, edesc->src_nents, edesc->dst_nents,
+ edesc->iv_dma, ivsize, caam_req->op_type,
+ edesc->qm_sg_dma, edesc->qm_sg_bytes);
+}
+
static void aead_encrypt_done(void *cbk_ctx, u32 status)
{
struct crypto_async_request *areq = cbk_ctx;
@@ -1189,6 +1653,133 @@ static int ipsec_gcm_decrypt(struct aead_request *req)
return aead_decrypt(req);
}
+static void ablkcipher_done(void *cbk_ctx, u32 status)
+{
+ struct crypto_async_request *areq = cbk_ctx;
+ struct ablkcipher_request *req = ablkcipher_request_cast(areq);
+ struct caam_request *req_ctx = to_caam_req(areq);
+ struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
+ struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher);
+ struct ablkcipher_edesc *edesc = req_ctx->edesc;
+ int ecode = 0;
+ int ivsize = crypto_ablkcipher_ivsize(ablkcipher);
+
+#ifdef DEBUG
+ dev_err(ctx->dev, "%s %d: err 0x%x\n", __func__, __LINE__, status);
+#endif
+
+ if (unlikely(status)) {
+ caam_qi2_strstatus(ctx->dev, status);
+ ecode = -EIO;
+ }
+
+#ifdef DEBUG
+ print_hex_dump(KERN_ERR, "dstiv @" __stringify(__LINE__)": ",
+ DUMP_PREFIX_ADDRESS, 16, 4, req->info,
+ edesc->src_nents > 1 ? 100 : ivsize, 1);
+ caam_dump_sg(KERN_ERR, "dst @" __stringify(__LINE__)": ",
+ DUMP_PREFIX_ADDRESS, 16, 4, req->dst,
+ edesc->dst_nents > 1 ? 100 : req->nbytes, 1);
+#endif
+
+ ablkcipher_unmap(ctx->dev, edesc, req);
+ qi_cache_free(edesc);
+
+ /*
+ * The crypto API expects us to set the IV (req->info) to the last
+ * ciphertext block. This is used e.g. by the CTS mode.
+ */
+ scatterwalk_map_and_copy(req->info, req->dst, req->nbytes - ivsize,
+ ivsize, 0);
+
+ ablkcipher_request_complete(req, ecode);
+}
+
+static int ablkcipher_encrypt(struct ablkcipher_request *req)
+{
+ struct ablkcipher_edesc *edesc;
+ struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
+ struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher);
+ struct caam_request *caam_req = ablkcipher_request_ctx(req);
+ int ret;
+
+ /* allocate extended descriptor */
+ edesc = ablkcipher_edesc_alloc(req, true);
+ if (IS_ERR(edesc))
+ return PTR_ERR(edesc);
+
+ caam_req->flc = &ctx->flc[ENCRYPT];
+ caam_req->op_type = ENCRYPT;
+ caam_req->cbk = ablkcipher_done;
+ caam_req->ctx = &req->base;
+ caam_req->edesc = edesc;
+ ret = dpaa2_caam_enqueue(ctx->dev, caam_req);
+ if (ret != -EINPROGRESS &&
+ !(ret == -EBUSY && req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
+ ablkcipher_unmap(ctx->dev, edesc, req);
+ qi_cache_free(edesc);
+ }
+
+ return ret;
+}
+
+static int ablkcipher_givencrypt(struct skcipher_givcrypt_request *greq)
+{
+ struct ablkcipher_request *req = &greq->creq;
+ struct ablkcipher_edesc *edesc;
+ struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
+ struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher);
+ struct caam_request *caam_req = ablkcipher_request_ctx(req);
+ int ret;
+
+ /* allocate extended descriptor */
+ edesc = ablkcipher_giv_edesc_alloc(greq);
+ if (IS_ERR(edesc))
+ return PTR_ERR(edesc);
+
+ caam_req->flc = &ctx->flc[GIVENCRYPT];
+ caam_req->op_type = GIVENCRYPT;
+ caam_req->cbk = ablkcipher_done;
+ caam_req->ctx = &req->base;
+ caam_req->edesc = edesc;
+ ret = dpaa2_caam_enqueue(ctx->dev, caam_req);
+ if (ret != -EINPROGRESS &&
+ !(ret == -EBUSY && req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
+ ablkcipher_unmap(ctx->dev, edesc, req);
+ qi_cache_free(edesc);
+ }
+
+ return ret;
+}
+
+static int ablkcipher_decrypt(struct ablkcipher_request *req)
+{
+ struct ablkcipher_edesc *edesc;
+ struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
+ struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher);
+ struct caam_request *caam_req = ablkcipher_request_ctx(req);
+ int ret;
+
+ /* allocate extended descriptor */
+ edesc = ablkcipher_edesc_alloc(req, false);
+ if (IS_ERR(edesc))
+ return PTR_ERR(edesc);
+
+ caam_req->flc = &ctx->flc[DECRYPT];
+ caam_req->op_type = DECRYPT;
+ caam_req->cbk = ablkcipher_done;
+ caam_req->ctx = &req->base;
+ caam_req->edesc = edesc;
+ ret = dpaa2_caam_enqueue(ctx->dev, caam_req);
+ if (ret != -EINPROGRESS &&
+ !(ret == -EBUSY && req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
+ ablkcipher_unmap(ctx->dev, edesc, req);
+ qi_cache_free(edesc);
+ }
+
+ return ret;
+}
+
struct caam_crypto_alg {
struct list_head entry;
struct crypto_alg crypto_alg;
@@ -1213,6 +1804,15 @@ static int caam_cra_init(struct crypto_tfm *tfm)
return 0;
}
+static int caam_cra_init_ablkcipher(struct crypto_tfm *tfm)
+{
+ struct ablkcipher_tfm *ablkcipher_tfm =
+ crypto_ablkcipher_crt(__crypto_ablkcipher_cast(tfm));
+
+ ablkcipher_tfm->reqsize = sizeof(struct caam_request);
+ return caam_cra_init(tfm);
+}
+
static int caam_cra_init_aead(struct crypto_aead *tfm)
{
crypto_aead_set_reqsize(tfm, sizeof(struct caam_request));
@@ -1239,11 +1839,135 @@ static void caam_exit_common(struct crypto_tfm *tfm)
DMA_TO_DEVICE);
}
+static void caam_cra_exit(struct crypto_tfm *tfm)
+{
+ caam_exit_common(crypto_tfm_ctx(tfm));
+}
+
static void caam_cra_exit_aead(struct crypto_aead *tfm)
{
caam_exit_common(crypto_aead_ctx(tfm));
}
+#define template_ablkcipher template_u.ablkcipher
+struct caam_alg_template {
+ char name[CRYPTO_MAX_ALG_NAME];
+ char driver_name[CRYPTO_MAX_ALG_NAME];
+ unsigned int blocksize;
+ u32 type;
+ union {
+ struct ablkcipher_alg ablkcipher;
+ } template_u;
+ u32 class1_alg_type;
+ u32 class2_alg_type;
+};
+
+static struct caam_alg_template driver_algs[] = {
+ /* ablkcipher descriptor */
+ {
+ .name = "cbc(aes)",
+ .driver_name = "cbc-aes-caam-qi2",
+ .blocksize = AES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_GIVCIPHER,
+ .template_ablkcipher = {
+ .setkey = ablkcipher_setkey,
+ .encrypt = ablkcipher_encrypt,
+ .decrypt = ablkcipher_decrypt,
+ .givencrypt = ablkcipher_givencrypt,
+ .geniv = "<built-in>",
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ },
+ .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
+ },
+ {
+ .name = "cbc(des3_ede)",
+ .driver_name = "cbc-3des-caam-qi2",
+ .blocksize = DES3_EDE_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_GIVCIPHER,
+ .template_ablkcipher = {
+ .setkey = ablkcipher_setkey,
+ .encrypt = ablkcipher_encrypt,
+ .decrypt = ablkcipher_decrypt,
+ .givencrypt = ablkcipher_givencrypt,
+ .geniv = "<built-in>",
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ },
+ .class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
+ },
+ {
+ .name = "cbc(des)",
+ .driver_name = "cbc-des-caam-qi2",
+ .blocksize = DES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_GIVCIPHER,
+ .template_ablkcipher = {
+ .setkey = ablkcipher_setkey,
+ .encrypt = ablkcipher_encrypt,
+ .decrypt = ablkcipher_decrypt,
+ .givencrypt = ablkcipher_givencrypt,
+ .geniv = "<built-in>",
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
+ .ivsize = DES_BLOCK_SIZE,
+ },
+ .class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
+ },
+ {
+ .name = "ctr(aes)",
+ .driver_name = "ctr-aes-caam-qi2",
+ .blocksize = 1,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = ablkcipher_setkey,
+ .encrypt = ablkcipher_encrypt,
+ .decrypt = ablkcipher_decrypt,
+ .geniv = "chainiv",
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ },
+ .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CTR_MOD128,
+ },
+ {
+ .name = "rfc3686(ctr(aes))",
+ .driver_name = "rfc3686-ctr-aes-caam-qi2",
+ .blocksize = 1,
+ .type = CRYPTO_ALG_TYPE_GIVCIPHER,
+ .template_ablkcipher = {
+ .setkey = ablkcipher_setkey,
+ .encrypt = ablkcipher_encrypt,
+ .decrypt = ablkcipher_decrypt,
+ .givencrypt = ablkcipher_givencrypt,
+ .geniv = "<built-in>",
+ .min_keysize = AES_MIN_KEY_SIZE +
+ CTR_RFC3686_NONCE_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE +
+ CTR_RFC3686_NONCE_SIZE,
+ .ivsize = CTR_RFC3686_IV_SIZE,
+ },
+ .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CTR_MOD128,
+ },
+ {
+ .name = "xts(aes)",
+ .driver_name = "xts-aes-caam-qi2",
+ .blocksize = AES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = xts_ablkcipher_setkey,
+ .encrypt = ablkcipher_encrypt,
+ .decrypt = ablkcipher_decrypt,
+ .geniv = "eseqiv",
+ .min_keysize = 2 * AES_MIN_KEY_SIZE,
+ .max_keysize = 2 * AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ },
+ .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_XTS,
+ }
+};
+
static struct caam_aead_alg driver_aeads[] = {
{
.aead = {
@@ -2406,6 +3130,48 @@ static struct caam_aead_alg driver_aeads[] = {
},
};
+static struct caam_crypto_alg *caam_alg_alloc(struct caam_alg_template
+ *template)
+{
+ struct caam_crypto_alg *t_alg;
+ struct crypto_alg *alg;
+
+ t_alg = kzalloc(sizeof(*t_alg), GFP_KERNEL);
+ if (!t_alg)
+ return ERR_PTR(-ENOMEM);
+
+ alg = &t_alg->crypto_alg;
+
+ snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", template->name);
+ snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
+ template->driver_name);
+ alg->cra_module = THIS_MODULE;
+ alg->cra_exit = caam_cra_exit;
+ alg->cra_priority = CAAM_CRA_PRIORITY;
+ alg->cra_blocksize = template->blocksize;
+ alg->cra_alignmask = 0;
+ alg->cra_ctxsize = sizeof(struct caam_ctx);
+ alg->cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY |
+ template->type;
+ switch (template->type) {
+ case CRYPTO_ALG_TYPE_GIVCIPHER:
+ alg->cra_init = caam_cra_init_ablkcipher;
+ alg->cra_type = &crypto_givcipher_type;
+ alg->cra_ablkcipher = template->template_ablkcipher;
+ break;
+ case CRYPTO_ALG_TYPE_ABLKCIPHER:
+ alg->cra_init = caam_cra_init_ablkcipher;
+ alg->cra_type = &crypto_ablkcipher_type;
+ alg->cra_ablkcipher = template->template_ablkcipher;
+ break;
+ }
+
+ t_alg->caam.class1_alg_type = template->class1_alg_type;
+ t_alg->caam.class2_alg_type = template->class2_alg_type;
+
+ return t_alg;
+}
+
static void caam_aead_alg_init(struct caam_aead_alg *t_alg)
{
struct aead_alg *alg = &t_alg->aead;
@@ -2878,6 +3644,8 @@ static int __cold dpaa2_dpseci_disable(struct dpaa2_caam_priv *priv)
return 0;
}
+static struct list_head alg_list;
+
static int dpaa2_caam_probe(struct fsl_mc_device *dpseci_dev)
{
struct device *dev;
@@ -2959,6 +3727,44 @@ static int dpaa2_caam_probe(struct fsl_mc_device *dpseci_dev)
}
/* register crypto algorithms the device supports */
+ INIT_LIST_HEAD(&alg_list);
+ for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
+ struct caam_crypto_alg *t_alg;
+ struct caam_alg_template *alg = driver_algs + i;
+ u32 alg_sel = alg->class1_alg_type & OP_ALG_ALGSEL_MASK;
+
+ /* Skip DES algorithms if not supported by device */
+ if (!priv->sec_attr.des_acc_num &&
+ ((alg_sel == OP_ALG_ALGSEL_3DES) ||
+ (alg_sel == OP_ALG_ALGSEL_DES)))
+ continue;
+
+ /* Skip AES algorithms if not supported by device */
+ if (!priv->sec_attr.aes_acc_num &&
+ (alg_sel == OP_ALG_ALGSEL_AES))
+ continue;
+
+ t_alg = caam_alg_alloc(alg);
+ if (IS_ERR(t_alg)) {
+ err = PTR_ERR(t_alg);
+ dev_warn(dev, "%s alg allocation failed: %d\n",
+ alg->driver_name, err);
+ continue;
+ }
+ t_alg->caam.dev = dev;
+
+ err = crypto_register_alg(&t_alg->crypto_alg);
+ if (err) {
+ dev_warn(dev, "%s alg registration failed: %d\n",
+ t_alg->crypto_alg.cra_driver_name, err);
+ kfree(t_alg);
+ continue;
+ }
+
+ list_add_tail(&t_alg->entry, &alg_list);
+ registered = true;
+ }
+
for (i = 0; i < ARRAY_SIZE(driver_aeads); i++) {
struct caam_aead_alg *t_alg = driver_aeads + i;
u32 c1_alg_sel = t_alg->caam.class1_alg_type &
@@ -3034,6 +3840,16 @@ static int __cold dpaa2_caam_remove(struct fsl_mc_device *ls_dev)
crypto_unregister_aead(&t_alg->aead);
}
+ if (alg_list.next) {
+ struct caam_crypto_alg *t_alg, *n;
+
+ list_for_each_entry_safe(t_alg, n, &alg_list, entry) {
+ crypto_unregister_alg(&t_alg->crypto_alg);
+ list_del(&t_alg->entry);
+ kfree(t_alg);
+ }
+ }
+
dpaa2_dpseci_disable(priv);
dpaa2_dpseci_dpio_free(priv);
dpaa2_dpseci_free(priv);
diff --git a/drivers/crypto/caam/caamalg_qi2.h b/drivers/crypto/caam/caamalg_qi2.h
index bfb3a6416f91..8840721595c8 100644
--- a/drivers/crypto/caam/caamalg_qi2.h
+++ b/drivers/crypto/caam/caamalg_qi2.h
@@ -170,6 +170,27 @@ struct aead_edesc {
struct dpaa2_sg_entry sgt[0];
};
+/*
+ * ablkcipher_edesc - s/w-extended ablkcipher descriptor
+ * @src_nents: number of segments in input scatterlist
+ * @dst_nents: number of segments in output scatterlist
+ * @iv_dma: dma address of iv for checking continuity and link table
+ * @qm_sg_bytes: length of dma mapped qm_sg space
+ * @qm_sg_dma: I/O virtual address of h/w link table
+ * @sgt: the h/w link table
+ */
+struct ablkcipher_edesc {
+ int src_nents;
+ int dst_nents;
+ dma_addr_t iv_dma;
+ int qm_sg_bytes;
+ dma_addr_t qm_sg_dma;
+#define CAAM_QI_MAX_ABLKCIPHER_SG \
+ ((CAAM_QI_MEMCACHE_SIZE - offsetof(struct ablkcipher_edesc, sgt)) / \
+ sizeof(struct dpaa2_sg_entry))
+ struct dpaa2_sg_entry sgt[0];
+};
+
/**
* caam_flc - Flow Context (FLC)
* @flc: Flow Context options
@@ -200,7 +221,7 @@ enum optype {
* @op_type: operation type
* @cbk: Callback function to invoke when job is completed
* @ctx: arbit context attached with request by the application
- * @edesc: extended descriptor; points to aead_edesc
+ * @edesc: extended descriptor; points to one of {ablkcipher,aead}_edesc
*/
struct caam_request {
struct dpaa2_fl_entry fd_flt[2];
--
2.12.0.264.gd6db3f216544
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