diff options
Diffstat (limited to 'drivers/crypto/caam')
-rw-r--r-- | drivers/crypto/caam/caamalg.c | 88 | ||||
-rw-r--r-- | drivers/crypto/caam/caamalg_desc.c | 31 | ||||
-rw-r--r-- | drivers/crypto/caam/caamalg_desc.h | 4 | ||||
-rw-r--r-- | drivers/crypto/caam/caamalg_qi.c | 90 | ||||
-rw-r--r-- | drivers/crypto/caam/caamalg_qi2.c | 96 |
5 files changed, 163 insertions, 146 deletions
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index 95ef70bffd12..43f18253e5b6 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -898,7 +898,7 @@ static void caam_unmap(struct device *dev, struct scatterlist *src, } if (iv_dma) - dma_unmap_single(dev, iv_dma, ivsize, DMA_TO_DEVICE); + dma_unmap_single(dev, iv_dma, ivsize, DMA_BIDIRECTIONAL); if (sec4_sg_bytes) dma_unmap_single(dev, sec4_sg_dma, sec4_sg_bytes, DMA_TO_DEVICE); @@ -977,7 +977,6 @@ static void skcipher_encrypt_done(struct device *jrdev, u32 *desc, u32 err, struct skcipher_request *req = context; struct skcipher_edesc *edesc; struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req); - struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher); int ivsize = crypto_skcipher_ivsize(skcipher); dev_dbg(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err); @@ -991,16 +990,17 @@ static void skcipher_encrypt_done(struct device *jrdev, u32 *desc, u32 err, /* * The crypto API expects us to set the IV (req->iv) to the last - * ciphertext block when running in CBC mode. + * ciphertext block (CBC mode) or last counter (CTR mode). + * This is used e.g. by the CTS mode. */ - if ((ctx->cdata.algtype & OP_ALG_AAI_MASK) == OP_ALG_AAI_CBC) - scatterwalk_map_and_copy(req->iv, req->dst, req->cryptlen - - ivsize, ivsize, 0); + if (ivsize) { + memcpy(req->iv, (u8 *)edesc->sec4_sg + edesc->sec4_sg_bytes, + ivsize); - if (ivsize) print_hex_dump_debug("dstiv @"__stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 4, req->iv, edesc->src_nents > 1 ? 100 : ivsize, 1); + } caam_dump_sg("dst @" __stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 4, req->dst, @@ -1027,8 +1027,20 @@ static void skcipher_decrypt_done(struct device *jrdev, u32 *desc, u32 err, skcipher_unmap(jrdev, edesc, req); - print_hex_dump_debug("dstiv @"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, req->iv, ivsize, 1); + /* + * The crypto API expects us to set the IV (req->iv) to the last + * ciphertext block (CBC mode) or last counter (CTR mode). + * This is used e.g. by the CTS mode. + */ + if (ivsize) { + memcpy(req->iv, (u8 *)edesc->sec4_sg + edesc->sec4_sg_bytes, + ivsize); + + print_hex_dump_debug("dstiv @" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, req->iv, + ivsize, 1); + } + caam_dump_sg("dst @" __stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 4, req->dst, edesc->dst_nents > 1 ? 100 : req->cryptlen, 1); @@ -1260,7 +1272,7 @@ static void init_skcipher_job(struct skcipher_request *req, if (likely(req->src == req->dst)) { dst_dma = src_dma + !!ivsize * sizeof(struct sec4_sg_entry); out_options = in_options; - } else if (edesc->mapped_dst_nents == 1) { + } else if (!ivsize && edesc->mapped_dst_nents == 1) { dst_dma = sg_dma_address(req->dst); } else { dst_dma = edesc->sec4_sg_dma + sec4_sg_index * @@ -1268,7 +1280,7 @@ static void init_skcipher_job(struct skcipher_request *req, out_options = LDST_SGF; } - append_seq_out_ptr(desc, dst_dma, req->cryptlen, out_options); + append_seq_out_ptr(desc, dst_dma, req->cryptlen + ivsize, out_options); } /* @@ -1699,22 +1711,26 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req, dst_sg_idx = sec4_sg_ents; /* + * Input, output HW S/G tables: [IV, src][dst, IV] + * IV entries point to the same buffer + * If src == dst, S/G entries are reused (S/G tables overlap) + * * HW reads 4 S/G entries at a time; make sure the reads don't go beyond * the end of the table by allocating more S/G entries. Logic: - * if (src != dst && output S/G) + * if (output S/G) * pad output S/G, if needed - * else if (src == dst && S/G) - * overlapping S/Gs; pad one of them * else if (input S/G) ... * pad input S/G, if needed */ - if (mapped_dst_nents > 1) - sec4_sg_ents += pad_sg_nents(mapped_dst_nents); - else if ((req->src == req->dst) && (mapped_src_nents > 1)) - sec4_sg_ents = max(pad_sg_nents(sec4_sg_ents), - !!ivsize + pad_sg_nents(mapped_src_nents)); - else + if (ivsize || mapped_dst_nents > 1) { + if (req->src == req->dst) + sec4_sg_ents = !!ivsize + pad_sg_nents(sec4_sg_ents); + else + sec4_sg_ents += pad_sg_nents(mapped_dst_nents + + !!ivsize); + } else { sec4_sg_ents = pad_sg_nents(sec4_sg_ents); + } sec4_sg_bytes = sec4_sg_ents * sizeof(struct sec4_sg_entry); @@ -1740,10 +1756,10 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req, /* Make sure IV is located in a DMAable area */ if (ivsize) { - iv = (u8 *)edesc->hw_desc + desc_bytes + sec4_sg_bytes; + iv = (u8 *)edesc->sec4_sg + sec4_sg_bytes; memcpy(iv, req->iv, ivsize); - iv_dma = dma_map_single(jrdev, iv, ivsize, DMA_TO_DEVICE); + iv_dma = dma_map_single(jrdev, iv, ivsize, DMA_BIDIRECTIONAL); if (dma_mapping_error(jrdev, iv_dma)) { dev_err(jrdev, "unable to map IV\n"); caam_unmap(jrdev, req->src, req->dst, src_nents, @@ -1755,13 +1771,20 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req, dma_to_sec4_sg_one(edesc->sec4_sg, iv_dma, ivsize, 0); } if (dst_sg_idx) - sg_to_sec4_sg_last(req->src, req->cryptlen, edesc->sec4_sg + - !!ivsize, 0); + sg_to_sec4_sg(req->src, req->cryptlen, edesc->sec4_sg + + !!ivsize, 0); - if (mapped_dst_nents > 1) { - sg_to_sec4_sg_last(req->dst, req->cryptlen, - edesc->sec4_sg + dst_sg_idx, 0); - } + if (req->src != req->dst && (ivsize || mapped_dst_nents > 1)) + sg_to_sec4_sg(req->dst, req->cryptlen, edesc->sec4_sg + + dst_sg_idx, 0); + + if (ivsize) + dma_to_sec4_sg_one(edesc->sec4_sg + dst_sg_idx + + mapped_dst_nents, iv_dma, ivsize, 0); + + if (ivsize || mapped_dst_nents > 1) + sg_to_sec4_set_last(edesc->sec4_sg + dst_sg_idx + + mapped_dst_nents); if (sec4_sg_bytes) { edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, @@ -1824,7 +1847,6 @@ static int skcipher_decrypt(struct skcipher_request *req) struct skcipher_edesc *edesc; struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req); struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher); - int ivsize = crypto_skcipher_ivsize(skcipher); struct device *jrdev = ctx->jrdev; u32 *desc; int ret = 0; @@ -1834,14 +1856,6 @@ static int skcipher_decrypt(struct skcipher_request *req) if (IS_ERR(edesc)) return PTR_ERR(edesc); - /* - * The crypto API expects us to set the IV (req->iv) to the last - * ciphertext block when running in CBC mode. - */ - if ((ctx->cdata.algtype & OP_ALG_AAI_MASK) == OP_ALG_AAI_CBC) - scatterwalk_map_and_copy(req->iv, req->src, req->cryptlen - - ivsize, ivsize, 0); - /* Create and submit job descriptor*/ init_skcipher_job(req, edesc, false); desc = edesc->hw_desc; diff --git a/drivers/crypto/caam/caamalg_desc.c b/drivers/crypto/caam/caamalg_desc.c index a73b79c5d46c..72531837571e 100644 --- a/drivers/crypto/caam/caamalg_desc.c +++ b/drivers/crypto/caam/caamalg_desc.c @@ -33,12 +33,11 @@ static inline void append_dec_op1(u32 *desc, u32 type) } jump_cmd = append_jump(desc, JUMP_TEST_ALL | JUMP_COND_SHRD); - append_operation(desc, type | OP_ALG_AS_INITFINAL | - OP_ALG_DECRYPT); + append_operation(desc, type | OP_ALG_AS_INIT | OP_ALG_DECRYPT); uncond_jump_cmd = append_jump(desc, JUMP_TEST_ALL); set_jump_tgt_here(desc, jump_cmd); - append_operation(desc, type | OP_ALG_AS_INITFINAL | - OP_ALG_DECRYPT | OP_ALG_AAI_DK); + append_operation(desc, type | OP_ALG_AS_INIT | OP_ALG_DECRYPT | + OP_ALG_AAI_DK); set_jump_tgt_here(desc, uncond_jump_cmd); } @@ -1392,12 +1391,18 @@ void cnstr_shdsc_skcipher_encap(u32 * const desc, struct alginfo *cdata, LDST_OFFSET_SHIFT)); /* Load operation */ - append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + append_operation(desc, cdata->algtype | OP_ALG_AS_INIT | OP_ALG_ENCRYPT); /* Perform operation */ skcipher_append_src_dst(desc); + /* Store IV */ + if (ivsize) + append_seq_store(desc, ivsize, LDST_SRCDST_BYTE_CONTEXT | + LDST_CLASS_1_CCB | (ctx1_iv_off << + LDST_OFFSET_SHIFT)); + print_hex_dump_debug("skcipher enc shdesc@" __stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); @@ -1459,7 +1464,7 @@ void cnstr_shdsc_skcipher_decap(u32 * const desc, struct alginfo *cdata, /* Choose operation */ if (ctx1_iv_off) - append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + append_operation(desc, cdata->algtype | OP_ALG_AS_INIT | OP_ALG_DECRYPT); else append_dec_op1(desc, cdata->algtype); @@ -1467,6 +1472,12 @@ void cnstr_shdsc_skcipher_decap(u32 * const desc, struct alginfo *cdata, /* Perform operation */ skcipher_append_src_dst(desc); + /* Store IV */ + if (ivsize) + append_seq_store(desc, ivsize, LDST_SRCDST_BYTE_CONTEXT | + LDST_CLASS_1_CCB | (ctx1_iv_off << + LDST_OFFSET_SHIFT)); + print_hex_dump_debug("skcipher dec shdesc@" __stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); @@ -1516,6 +1527,10 @@ void cnstr_shdsc_xts_skcipher_encap(u32 * const desc, struct alginfo *cdata) /* Perform operation */ skcipher_append_src_dst(desc); + /* Store upper 8B of IV */ + append_seq_store(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | + (0x20 << LDST_OFFSET_SHIFT)); + print_hex_dump_debug("xts skcipher enc shdesc@" __stringify(__LINE__) ": ", DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); @@ -1564,6 +1579,10 @@ void cnstr_shdsc_xts_skcipher_decap(u32 * const desc, struct alginfo *cdata) /* Perform operation */ skcipher_append_src_dst(desc); + /* Store upper 8B of IV */ + append_seq_store(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | + (0x20 << LDST_OFFSET_SHIFT)); + print_hex_dump_debug("xts skcipher dec shdesc@" __stringify(__LINE__) ": ", DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); diff --git a/drivers/crypto/caam/caamalg_desc.h b/drivers/crypto/caam/caamalg_desc.h index d5ca42ff961a..da4a4ee60c80 100644 --- a/drivers/crypto/caam/caamalg_desc.h +++ b/drivers/crypto/caam/caamalg_desc.h @@ -44,9 +44,9 @@ #define DESC_SKCIPHER_BASE (3 * CAAM_CMD_SZ) #define DESC_SKCIPHER_ENC_LEN (DESC_SKCIPHER_BASE + \ - 20 * CAAM_CMD_SZ) + 21 * CAAM_CMD_SZ) #define DESC_SKCIPHER_DEC_LEN (DESC_SKCIPHER_BASE + \ - 15 * CAAM_CMD_SZ) + 16 * CAAM_CMD_SZ) void cnstr_shdsc_aead_null_encap(u32 * const desc, struct alginfo *adata, unsigned int icvsize, int era); diff --git a/drivers/crypto/caam/caamalg_qi.c b/drivers/crypto/caam/caamalg_qi.c index cec54344787c..32f0f8a72067 100644 --- a/drivers/crypto/caam/caamalg_qi.c +++ b/drivers/crypto/caam/caamalg_qi.c @@ -831,7 +831,8 @@ static struct caam_drv_ctx *get_drv_ctx(struct caam_ctx *ctx, static void caam_unmap(struct device *dev, struct scatterlist *src, struct scatterlist *dst, int src_nents, int dst_nents, dma_addr_t iv_dma, int ivsize, - dma_addr_t qm_sg_dma, int qm_sg_bytes) + enum dma_data_direction iv_dir, dma_addr_t qm_sg_dma, + int qm_sg_bytes) { if (dst != src) { if (src_nents) @@ -843,7 +844,7 @@ static void caam_unmap(struct device *dev, struct scatterlist *src, } if (iv_dma) - dma_unmap_single(dev, iv_dma, ivsize, DMA_TO_DEVICE); + dma_unmap_single(dev, iv_dma, ivsize, iv_dir); if (qm_sg_bytes) dma_unmap_single(dev, qm_sg_dma, qm_sg_bytes, DMA_TO_DEVICE); } @@ -856,7 +857,8 @@ static void aead_unmap(struct device *dev, int ivsize = crypto_aead_ivsize(aead); caam_unmap(dev, req->src, req->dst, edesc->src_nents, edesc->dst_nents, - edesc->iv_dma, ivsize, edesc->qm_sg_dma, edesc->qm_sg_bytes); + edesc->iv_dma, ivsize, DMA_TO_DEVICE, edesc->qm_sg_dma, + edesc->qm_sg_bytes); dma_unmap_single(dev, edesc->assoclen_dma, 4, DMA_TO_DEVICE); } @@ -867,7 +869,8 @@ static void skcipher_unmap(struct device *dev, struct skcipher_edesc *edesc, int ivsize = crypto_skcipher_ivsize(skcipher); caam_unmap(dev, req->src, req->dst, edesc->src_nents, edesc->dst_nents, - edesc->iv_dma, ivsize, edesc->qm_sg_dma, edesc->qm_sg_bytes); + edesc->iv_dma, ivsize, DMA_BIDIRECTIONAL, edesc->qm_sg_dma, + edesc->qm_sg_bytes); } static void aead_done(struct caam_drv_req *drv_req, u32 status) @@ -1036,7 +1039,7 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, dev_err(qidev, "No space for %d S/G entries and/or %dB IV\n", qm_sg_ents, ivsize); caam_unmap(qidev, req->src, req->dst, src_nents, dst_nents, 0, - 0, 0, 0); + 0, DMA_NONE, 0, 0); qi_cache_free(edesc); return ERR_PTR(-ENOMEM); } @@ -1051,7 +1054,7 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, if (dma_mapping_error(qidev, iv_dma)) { dev_err(qidev, "unable to map IV\n"); caam_unmap(qidev, req->src, req->dst, src_nents, - dst_nents, 0, 0, 0, 0); + dst_nents, 0, 0, DMA_NONE, 0, 0); qi_cache_free(edesc); return ERR_PTR(-ENOMEM); } @@ -1070,7 +1073,7 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, if (dma_mapping_error(qidev, edesc->assoclen_dma)) { dev_err(qidev, "unable to map assoclen\n"); caam_unmap(qidev, req->src, req->dst, src_nents, dst_nents, - iv_dma, ivsize, 0, 0); + iv_dma, ivsize, DMA_TO_DEVICE, 0, 0); qi_cache_free(edesc); return ERR_PTR(-ENOMEM); } @@ -1092,7 +1095,7 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, dev_err(qidev, "unable to map S/G table\n"); dma_unmap_single(qidev, edesc->assoclen_dma, 4, DMA_TO_DEVICE); caam_unmap(qidev, req->src, req->dst, src_nents, dst_nents, - iv_dma, ivsize, 0, 0); + iv_dma, ivsize, DMA_TO_DEVICE, 0, 0); qi_cache_free(edesc); return ERR_PTR(-ENOMEM); } @@ -1206,11 +1209,10 @@ static void skcipher_done(struct caam_drv_req *drv_req, u32 status) /* * The crypto API expects us to set the IV (req->iv) to the last - * ciphertext block. This is used e.g. by the CTS mode. + * ciphertext block (CBC mode) or last counter (CTR mode). + * This is used e.g. by the CTS mode. */ - if (edesc->drv_req.drv_ctx->op_type == ENCRYPT) - scatterwalk_map_and_copy(req->iv, req->dst, req->cryptlen - - ivsize, ivsize, 0); + memcpy(req->iv, (u8 *)&edesc->sgt[0] + edesc->qm_sg_bytes, ivsize); qi_cache_free(edesc); skcipher_request_complete(req, status); @@ -1279,22 +1281,17 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req, dst_sg_idx = qm_sg_ents; /* + * Input, output HW S/G tables: [IV, src][dst, IV] + * IV entries point to the same buffer + * If src == dst, S/G entries are reused (S/G tables overlap) + * * HW reads 4 S/G entries at a time; make sure the reads don't go beyond - * the end of the table by allocating more S/G entries. Logic: - * if (src != dst && output S/G) - * pad output S/G, if needed - * else if (src == dst && S/G) - * overlapping S/Gs; pad one of them - * else if (input S/G) ... - * pad input S/G, if needed + * the end of the table by allocating more S/G entries. */ - if (mapped_dst_nents > 1) - qm_sg_ents += pad_sg_nents(mapped_dst_nents); - else if ((req->src == req->dst) && (mapped_src_nents > 1)) - qm_sg_ents = max(pad_sg_nents(qm_sg_ents), - 1 + pad_sg_nents(mapped_src_nents)); + if (req->src != req->dst) + qm_sg_ents += pad_sg_nents(mapped_dst_nents + 1); else - qm_sg_ents = pad_sg_nents(qm_sg_ents); + qm_sg_ents = 1 + pad_sg_nents(qm_sg_ents); qm_sg_bytes = qm_sg_ents * sizeof(struct qm_sg_entry); if (unlikely(offsetof(struct skcipher_edesc, sgt) + qm_sg_bytes + @@ -1302,7 +1299,7 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req, dev_err(qidev, "No space for %d S/G entries and/or %dB IV\n", qm_sg_ents, ivsize); caam_unmap(qidev, req->src, req->dst, src_nents, dst_nents, 0, - 0, 0, 0); + 0, DMA_NONE, 0, 0); return ERR_PTR(-ENOMEM); } @@ -1311,7 +1308,7 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req, if (unlikely(!edesc)) { dev_err(qidev, "could not allocate extended descriptor\n"); caam_unmap(qidev, req->src, req->dst, src_nents, dst_nents, 0, - 0, 0, 0); + 0, DMA_NONE, 0, 0); return ERR_PTR(-ENOMEM); } @@ -1320,11 +1317,11 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req, iv = (u8 *)(sg_table + qm_sg_ents); memcpy(iv, req->iv, ivsize); - iv_dma = dma_map_single(qidev, iv, ivsize, DMA_TO_DEVICE); + iv_dma = dma_map_single(qidev, iv, ivsize, DMA_BIDIRECTIONAL); if (dma_mapping_error(qidev, iv_dma)) { dev_err(qidev, "unable to map IV\n"); caam_unmap(qidev, req->src, req->dst, src_nents, dst_nents, 0, - 0, 0, 0); + 0, DMA_NONE, 0, 0); qi_cache_free(edesc); return ERR_PTR(-ENOMEM); } @@ -1338,18 +1335,20 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req, edesc->drv_req.drv_ctx = drv_ctx; dma_to_qm_sg_one(sg_table, iv_dma, ivsize, 0); - sg_to_qm_sg_last(req->src, req->cryptlen, sg_table + 1, 0); + sg_to_qm_sg(req->src, req->cryptlen, sg_table + 1, 0); - if (mapped_dst_nents > 1) - sg_to_qm_sg_last(req->dst, req->cryptlen, sg_table + - dst_sg_idx, 0); + if (req->src != req->dst) + sg_to_qm_sg(req->dst, req->cryptlen, sg_table + dst_sg_idx, 0); + + dma_to_qm_sg_one(sg_table + dst_sg_idx + mapped_dst_nents, iv_dma, + ivsize, 0); edesc->qm_sg_dma = dma_map_single(qidev, sg_table, edesc->qm_sg_bytes, DMA_TO_DEVICE); if (dma_mapping_error(qidev, edesc->qm_sg_dma)) { dev_err(qidev, "unable to map S/G table\n"); caam_unmap(qidev, req->src, req->dst, src_nents, dst_nents, - iv_dma, ivsize, 0, 0); + iv_dma, ivsize, DMA_BIDIRECTIONAL, 0, 0); qi_cache_free(edesc); return ERR_PTR(-ENOMEM); } @@ -1359,16 +1358,14 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req, dma_to_qm_sg_one_last_ext(&fd_sgt[1], edesc->qm_sg_dma, ivsize + req->cryptlen, 0); - if (req->src == req->dst) { + if (req->src == req->dst) dma_to_qm_sg_one_ext(&fd_sgt[0], edesc->qm_sg_dma + - sizeof(*sg_table), req->cryptlen, 0); - } else if (mapped_dst_nents > 1) { + sizeof(*sg_table), req->cryptlen + ivsize, + 0); + else dma_to_qm_sg_one_ext(&fd_sgt[0], edesc->qm_sg_dma + dst_sg_idx * - sizeof(*sg_table), req->cryptlen, 0); - } else { - dma_to_qm_sg_one(&fd_sgt[0], sg_dma_address(req->dst), - req->cryptlen, 0); - } + sizeof(*sg_table), req->cryptlen + ivsize, + 0); return edesc; } @@ -1378,7 +1375,6 @@ static inline int skcipher_crypt(struct skcipher_request *req, bool encrypt) struct skcipher_edesc *edesc; struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req); struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher); - int ivsize = crypto_skcipher_ivsize(skcipher); int ret; if (unlikely(caam_congested)) @@ -1389,14 +1385,6 @@ static inline int skcipher_crypt(struct skcipher_request *req, bool encrypt) if (IS_ERR(edesc)) return PTR_ERR(edesc); - /* - * The crypto API expects us to set the IV (req->iv) to the last - * ciphertext block. - */ - if (!encrypt) - scatterwalk_map_and_copy(req->iv, req->src, req->cryptlen - - ivsize, ivsize, 0); - ret = caam_qi_enqueue(ctx->qidev, &edesc->drv_req); if (!ret) { ret = -EINPROGRESS; diff --git a/drivers/crypto/caam/caamalg_qi2.c b/drivers/crypto/caam/caamalg_qi2.c index 1652fa26cf96..06bf32c32cbd 100644 --- a/drivers/crypto/caam/caamalg_qi2.c +++ b/drivers/crypto/caam/caamalg_qi2.c @@ -140,7 +140,8 @@ static struct caam_request *to_caam_req(struct crypto_async_request *areq) static void caam_unmap(struct device *dev, struct scatterlist *src, struct scatterlist *dst, int src_nents, int dst_nents, dma_addr_t iv_dma, int ivsize, - dma_addr_t qm_sg_dma, int qm_sg_bytes) + enum dma_data_direction iv_dir, dma_addr_t qm_sg_dma, + int qm_sg_bytes) { if (dst != src) { if (src_nents) @@ -152,7 +153,7 @@ static void caam_unmap(struct device *dev, struct scatterlist *src, } if (iv_dma) - dma_unmap_single(dev, iv_dma, ivsize, DMA_TO_DEVICE); + dma_unmap_single(dev, iv_dma, ivsize, iv_dir); if (qm_sg_bytes) dma_unmap_single(dev, qm_sg_dma, qm_sg_bytes, DMA_TO_DEVICE); @@ -485,7 +486,7 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, dev_err(dev, "No space for %d S/G entries and/or %dB IV\n", qm_sg_nents, ivsize); caam_unmap(dev, req->src, req->dst, src_nents, dst_nents, 0, - 0, 0, 0); + 0, DMA_NONE, 0, 0); qi_cache_free(edesc); return ERR_PTR(-ENOMEM); } @@ -500,7 +501,7 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, 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); + dst_nents, 0, 0, DMA_NONE, 0, 0); qi_cache_free(edesc); return ERR_PTR(-ENOMEM); } @@ -524,7 +525,7 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, if (dma_mapping_error(dev, edesc->assoclen_dma)) { dev_err(dev, "unable to map assoclen\n"); caam_unmap(dev, req->src, req->dst, src_nents, dst_nents, - iv_dma, ivsize, 0, 0); + iv_dma, ivsize, DMA_TO_DEVICE, 0, 0); qi_cache_free(edesc); return ERR_PTR(-ENOMEM); } @@ -546,7 +547,7 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, dev_err(dev, "unable to map S/G table\n"); dma_unmap_single(dev, edesc->assoclen_dma, 4, DMA_TO_DEVICE); caam_unmap(dev, req->src, req->dst, src_nents, dst_nents, - iv_dma, ivsize, 0, 0); + iv_dma, ivsize, DMA_TO_DEVICE, 0, 0); qi_cache_free(edesc); return ERR_PTR(-ENOMEM); } @@ -1101,22 +1102,17 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req) dst_sg_idx = qm_sg_ents; /* + * Input, output HW S/G tables: [IV, src][dst, IV] + * IV entries point to the same buffer + * If src == dst, S/G entries are reused (S/G tables overlap) + * * HW reads 4 S/G entries at a time; make sure the reads don't go beyond - * the end of the table by allocating more S/G entries. Logic: - * if (src != dst && output S/G) - * pad output S/G, if needed - * else if (src == dst && S/G) - * overlapping S/Gs; pad one of them - * else if (input S/G) ... - * pad input S/G, if needed + * the end of the table by allocating more S/G entries. */ - if (mapped_dst_nents > 1) - qm_sg_ents += pad_sg_nents(mapped_dst_nents); - else if ((req->src == req->dst) && (mapped_src_nents > 1)) - qm_sg_ents = max(pad_sg_nents(qm_sg_ents), - 1 + pad_sg_nents(mapped_src_nents)); + if (req->src != req->dst) + qm_sg_ents += pad_sg_nents(mapped_dst_nents + 1); else - qm_sg_ents = pad_sg_nents(qm_sg_ents); + qm_sg_ents = 1 + pad_sg_nents(qm_sg_ents); qm_sg_bytes = qm_sg_ents * sizeof(struct dpaa2_sg_entry); if (unlikely(offsetof(struct skcipher_edesc, sgt) + qm_sg_bytes + @@ -1124,7 +1120,7 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req) dev_err(dev, "No space for %d S/G entries and/or %dB IV\n", qm_sg_ents, ivsize); caam_unmap(dev, req->src, req->dst, src_nents, dst_nents, 0, - 0, 0, 0); + 0, DMA_NONE, 0, 0); return ERR_PTR(-ENOMEM); } @@ -1133,7 +1129,7 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req) if (unlikely(!edesc)) { dev_err(dev, "could not allocate extended descriptor\n"); caam_unmap(dev, req->src, req->dst, src_nents, dst_nents, 0, - 0, 0, 0); + 0, DMA_NONE, 0, 0); return ERR_PTR(-ENOMEM); } @@ -1142,11 +1138,11 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req) iv = (u8 *)(sg_table + qm_sg_ents); memcpy(iv, req->iv, ivsize); - iv_dma = dma_map_single(dev, iv, ivsize, DMA_TO_DEVICE); + iv_dma = dma_map_single(dev, iv, ivsize, DMA_BIDIRECTIONAL); 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, DMA_NONE, 0, 0); qi_cache_free(edesc); return ERR_PTR(-ENOMEM); } @@ -1157,18 +1153,20 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req) edesc->qm_sg_bytes = qm_sg_bytes; dma_to_qm_sg_one(sg_table, iv_dma, ivsize, 0); - sg_to_qm_sg_last(req->src, req->cryptlen, sg_table + 1, 0); + sg_to_qm_sg(req->src, req->cryptlen, sg_table + 1, 0); - if (mapped_dst_nents > 1) - sg_to_qm_sg_last(req->dst, req->cryptlen, sg_table + - dst_sg_idx, 0); + if (req->src != req->dst) + sg_to_qm_sg(req->dst, req->cryptlen, sg_table + dst_sg_idx, 0); + + dma_to_qm_sg_one(sg_table + dst_sg_idx + mapped_dst_nents, iv_dma, + ivsize, 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, 0, 0); + iv_dma, ivsize, DMA_BIDIRECTIONAL, 0, 0); qi_cache_free(edesc); return ERR_PTR(-ENOMEM); } @@ -1176,23 +1174,19 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req) 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->cryptlen + ivsize); - dpaa2_fl_set_len(out_fle, req->cryptlen); + dpaa2_fl_set_len(out_fle, req->cryptlen + ivsize); dpaa2_fl_set_format(in_fle, dpaa2_fl_sg); dpaa2_fl_set_addr(in_fle, edesc->qm_sg_dma); - if (req->src == req->dst) { - dpaa2_fl_set_format(out_fle, dpaa2_fl_sg); + dpaa2_fl_set_format(out_fle, dpaa2_fl_sg); + + if (req->src == req->dst) dpaa2_fl_set_addr(out_fle, edesc->qm_sg_dma + sizeof(*sg_table)); - } else if (mapped_dst_nents > 1) { - dpaa2_fl_set_format(out_fle, dpaa2_fl_sg); + else 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; } @@ -1204,7 +1198,8 @@ static void aead_unmap(struct device *dev, struct aead_edesc *edesc, int ivsize = crypto_aead_ivsize(aead); caam_unmap(dev, req->src, req->dst, edesc->src_nents, edesc->dst_nents, - edesc->iv_dma, ivsize, edesc->qm_sg_dma, edesc->qm_sg_bytes); + edesc->iv_dma, ivsize, DMA_TO_DEVICE, edesc->qm_sg_dma, + edesc->qm_sg_bytes); dma_unmap_single(dev, edesc->assoclen_dma, 4, DMA_TO_DEVICE); } @@ -1215,7 +1210,8 @@ static void skcipher_unmap(struct device *dev, struct skcipher_edesc *edesc, int ivsize = crypto_skcipher_ivsize(skcipher); caam_unmap(dev, req->src, req->dst, edesc->src_nents, edesc->dst_nents, - edesc->iv_dma, ivsize, edesc->qm_sg_dma, edesc->qm_sg_bytes); + edesc->iv_dma, ivsize, DMA_BIDIRECTIONAL, edesc->qm_sg_dma, + edesc->qm_sg_bytes); } static void aead_encrypt_done(void *cbk_ctx, u32 status) @@ -1372,10 +1368,10 @@ static void skcipher_encrypt_done(void *cbk_ctx, u32 status) /* * The crypto API expects us to set the IV (req->iv) to the last - * ciphertext block. This is used e.g. by the CTS mode. + * ciphertext block (CBC mode) or last counter (CTR mode). + * This is used e.g. by the CTS mode. */ - scatterwalk_map_and_copy(req->iv, req->dst, req->cryptlen - ivsize, - ivsize, 0); + memcpy(req->iv, (u8 *)&edesc->sgt[0] + edesc->qm_sg_bytes, ivsize); qi_cache_free(edesc); skcipher_request_complete(req, ecode); @@ -1407,6 +1403,14 @@ static void skcipher_decrypt_done(void *cbk_ctx, u32 status) edesc->dst_nents > 1 ? 100 : req->cryptlen, 1); skcipher_unmap(ctx->dev, edesc, req); + + /* + * The crypto API expects us to set the IV (req->iv) to the last + * ciphertext block (CBC mode) or last counter (CTR mode). + * This is used e.g. by the CTS mode. + */ + memcpy(req->iv, (u8 *)&edesc->sgt[0] + edesc->qm_sg_bytes, ivsize); + qi_cache_free(edesc); skcipher_request_complete(req, ecode); } @@ -1445,7 +1449,6 @@ static int skcipher_decrypt(struct skcipher_request *req) struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req); struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher); struct caam_request *caam_req = skcipher_request_ctx(req); - int ivsize = crypto_skcipher_ivsize(skcipher); int ret; /* allocate extended descriptor */ @@ -1453,13 +1456,6 @@ static int skcipher_decrypt(struct skcipher_request *req) if (IS_ERR(edesc)) return PTR_ERR(edesc); - /* - * The crypto API expects us to set the IV (req->iv) to the last - * ciphertext block. - */ - scatterwalk_map_and_copy(req->iv, req->src, req->cryptlen - ivsize, - ivsize, 0); - caam_req->flc = &ctx->flc[DECRYPT]; caam_req->flc_dma = ctx->flc_dma[DECRYPT]; caam_req->cbk = skcipher_decrypt_done; |