From patchwork Thu Jan 16 16:20:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Iuliana Prodan X-Patchwork-Id: 11337397 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 349961820 for ; Thu, 16 Jan 2020 16:21:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 09AB9214AF for ; Thu, 16 Jan 2020 16:21:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726983AbgAPQVO (ORCPT ); Thu, 16 Jan 2020 11:21:14 -0500 Received: from inva021.nxp.com ([92.121.34.21]:58072 "EHLO inva021.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727033AbgAPQVN (ORCPT ); Thu, 16 Jan 2020 11:21:13 -0500 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id DACAA2006EC; Thu, 16 Jan 2020 17:21:10 +0100 (CET) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id CC31E200314; Thu, 16 Jan 2020 17:21:10 +0100 (CET) Received: from lorenz.ea.freescale.net (lorenz.ea.freescale.net [10.171.71.5]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id 509552047A; Thu, 16 Jan 2020 17:21:10 +0100 (CET) From: Iuliana Prodan To: Herbert Xu , Horia Geanta , Aymen Sghaier Cc: "David S. Miller" , Silvano Di Ninno , Franck Lenormand , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-imx , Iuliana Prodan Subject: [PATCH v3 5/9] crypto: caam - change return code in caam_jr_enqueue function Date: Thu, 16 Jan 2020 18:20:49 +0200 Message-Id: <1579191653-400-6-git-send-email-iuliana.prodan@nxp.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1579191653-400-1-git-send-email-iuliana.prodan@nxp.com> References: <1579191653-400-1-git-send-email-iuliana.prodan@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Based on commit 6b80ea389a0b ("crypto: change transient busy return code to -ENOSPC"), change the return code of caam_jr_enqueue function to -EINPROGRESS, in case of success, -ENOSPC in case the CAAM is busy (has no space left in job ring queue), -EIO if it cannot map the caller's descriptor. Update, also, the cases for resource-freeing for each algorithm type. This is done for later use, on backlogging support in CAAM. Signed-off-by: Iuliana Prodan Reviewed-by: Horia Geanta --- drivers/crypto/caam/caamalg.c | 16 ++++------------ drivers/crypto/caam/caamhash.c | 34 +++++++++++----------------------- drivers/crypto/caam/caampkc.c | 16 ++++++++-------- drivers/crypto/caam/caamrng.c | 4 ++-- drivers/crypto/caam/jr.c | 8 ++++---- drivers/crypto/caam/key_gen.c | 2 +- 6 files changed, 30 insertions(+), 50 deletions(-) diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index 30fca37..c1dd885 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -1398,9 +1398,7 @@ static inline int chachapoly_crypt(struct aead_request *req, bool encrypt) 1); ret = caam_jr_enqueue(jrdev, desc, aead_crypt_done, req); - if (!ret) { - ret = -EINPROGRESS; - } else { + if (ret != -EINPROGRESS) { aead_unmap(jrdev, edesc, req); kfree(edesc); } @@ -1443,9 +1441,7 @@ static inline int aead_crypt(struct aead_request *req, bool encrypt) desc = edesc->hw_desc; ret = caam_jr_enqueue(jrdev, desc, aead_crypt_done, req); - if (!ret) { - ret = -EINPROGRESS; - } else { + if (ret != -EINPROGRESS) { aead_unmap(jrdev, edesc, req); kfree(edesc); } @@ -1488,9 +1484,7 @@ static inline int gcm_crypt(struct aead_request *req, bool encrypt) desc = edesc->hw_desc; ret = caam_jr_enqueue(jrdev, desc, aead_crypt_done, req); - if (!ret) { - ret = -EINPROGRESS; - } else { + if (ret != -EINPROGRESS) { aead_unmap(jrdev, edesc, req); kfree(edesc); } @@ -1706,9 +1700,7 @@ static inline int skcipher_crypt(struct skcipher_request *req, bool encrypt) desc = edesc->hw_desc; ret = caam_jr_enqueue(jrdev, desc, skcipher_crypt_done, req); - if (!ret) { - ret = -EINPROGRESS; - } else { + if (ret != -EINPROGRESS) { skcipher_unmap(jrdev, edesc, req); kfree(edesc); } diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c index 4db8507..2af9e66 100644 --- a/drivers/crypto/caam/caamhash.c +++ b/drivers/crypto/caam/caamhash.c @@ -395,7 +395,7 @@ static int hash_digest_key(struct caam_hash_ctx *ctx, u32 *keylen, u8 *key, init_completion(&result.completion); ret = caam_jr_enqueue(jrdev, desc, split_key_done, &result); - if (!ret) { + if (ret == -EINPROGRESS) { /* in progress */ wait_for_completion(&result.completion); ret = result.err; @@ -828,10 +828,8 @@ static int ahash_update_ctx(struct ahash_request *req) desc_bytes(desc), 1); ret = caam_jr_enqueue(jrdev, desc, ahash_done_bi, req); - if (ret) + if (ret != -EINPROGRESS) goto unmap_ctx; - - ret = -EINPROGRESS; } else if (*next_buflen) { scatterwalk_map_and_copy(buf + *buflen, req->src, 0, req->nbytes, 0); @@ -903,10 +901,9 @@ static int ahash_final_ctx(struct ahash_request *req) 1); ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_src, req); - if (ret) - goto unmap_ctx; + if (ret == -EINPROGRESS) + return ret; - return -EINPROGRESS; unmap_ctx: ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_BIDIRECTIONAL); kfree(edesc); @@ -980,10 +977,9 @@ static int ahash_finup_ctx(struct ahash_request *req) 1); ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_src, req); - if (ret) - goto unmap_ctx; + if (ret == -EINPROGRESS) + return ret; - return -EINPROGRESS; unmap_ctx: ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_BIDIRECTIONAL); kfree(edesc); @@ -1053,9 +1049,7 @@ static int ahash_digest(struct ahash_request *req) 1); ret = caam_jr_enqueue(jrdev, desc, ahash_done, req); - if (!ret) { - ret = -EINPROGRESS; - } else { + if (ret != -EINPROGRESS) { ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE); kfree(edesc); } @@ -1105,9 +1099,7 @@ static int ahash_final_no_ctx(struct ahash_request *req) 1); ret = caam_jr_enqueue(jrdev, desc, ahash_done, req); - if (!ret) { - ret = -EINPROGRESS; - } else { + if (ret != -EINPROGRESS) { ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE); kfree(edesc); } @@ -1218,10 +1210,9 @@ static int ahash_update_no_ctx(struct ahash_request *req) desc_bytes(desc), 1); ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, req); - if (ret) + if (ret != -EINPROGRESS) goto unmap_ctx; - ret = -EINPROGRESS; state->update = ahash_update_ctx; state->finup = ahash_finup_ctx; state->final = ahash_final_ctx; @@ -1310,9 +1301,7 @@ static int ahash_finup_no_ctx(struct ahash_request *req) 1); ret = caam_jr_enqueue(jrdev, desc, ahash_done, req); - if (!ret) { - ret = -EINPROGRESS; - } else { + if (ret != -EINPROGRESS) { ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE); kfree(edesc); } @@ -1406,10 +1395,9 @@ static int ahash_update_first(struct ahash_request *req) desc_bytes(desc), 1); ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, req); - if (ret) + if (ret != -EINPROGRESS) goto unmap_ctx; - ret = -EINPROGRESS; state->update = ahash_update_ctx; state->finup = ahash_finup_ctx; state->final = ahash_final_ctx; diff --git a/drivers/crypto/caam/caampkc.c b/drivers/crypto/caam/caampkc.c index ebf1677..7f7ea32 100644 --- a/drivers/crypto/caam/caampkc.c +++ b/drivers/crypto/caam/caampkc.c @@ -634,8 +634,8 @@ static int caam_rsa_enc(struct akcipher_request *req) init_rsa_pub_desc(edesc->hw_desc, &edesc->pdb.pub); ret = caam_jr_enqueue(jrdev, edesc->hw_desc, rsa_pub_done, req); - if (!ret) - return -EINPROGRESS; + if (ret == -EINPROGRESS) + return ret; rsa_pub_unmap(jrdev, edesc, req); @@ -667,8 +667,8 @@ static int caam_rsa_dec_priv_f1(struct akcipher_request *req) init_rsa_priv_f1_desc(edesc->hw_desc, &edesc->pdb.priv_f1); ret = caam_jr_enqueue(jrdev, edesc->hw_desc, rsa_priv_f_done, req); - if (!ret) - return -EINPROGRESS; + if (ret == -EINPROGRESS) + return ret; rsa_priv_f1_unmap(jrdev, edesc, req); @@ -700,8 +700,8 @@ static int caam_rsa_dec_priv_f2(struct akcipher_request *req) init_rsa_priv_f2_desc(edesc->hw_desc, &edesc->pdb.priv_f2); ret = caam_jr_enqueue(jrdev, edesc->hw_desc, rsa_priv_f_done, req); - if (!ret) - return -EINPROGRESS; + if (ret == -EINPROGRESS) + return ret; rsa_priv_f2_unmap(jrdev, edesc, req); @@ -733,8 +733,8 @@ static int caam_rsa_dec_priv_f3(struct akcipher_request *req) init_rsa_priv_f3_desc(edesc->hw_desc, &edesc->pdb.priv_f3); ret = caam_jr_enqueue(jrdev, edesc->hw_desc, rsa_priv_f_done, req); - if (!ret) - return -EINPROGRESS; + if (ret == -EINPROGRESS) + return ret; rsa_priv_f3_unmap(jrdev, edesc, req); diff --git a/drivers/crypto/caam/caamrng.c b/drivers/crypto/caam/caamrng.c index e8baaca..34cbb4a 100644 --- a/drivers/crypto/caam/caamrng.c +++ b/drivers/crypto/caam/caamrng.c @@ -133,7 +133,7 @@ static inline int submit_job(struct caam_rng_ctx *ctx, int to_current) dev_dbg(jrdev, "submitting job %d\n", !(to_current ^ ctx->current_buf)); init_completion(&bd->filled); err = caam_jr_enqueue(jrdev, desc, rng_done, ctx); - if (err) + if (err != -EINPROGRESS) complete(&bd->filled); /* don't wait on failed job*/ else atomic_inc(&bd->empty); /* note if pending */ @@ -153,7 +153,7 @@ static int caam_read(struct hwrng *rng, void *data, size_t max, bool wait) if (atomic_read(&bd->empty) == BUF_EMPTY) { err = submit_job(ctx, 1); /* if can't submit job, can't even wait */ - if (err) + if (err != -EINPROGRESS) return 0; } /* no immediate data, so exit if not waiting */ diff --git a/drivers/crypto/caam/jr.c b/drivers/crypto/caam/jr.c index fc97cde..df2a050 100644 --- a/drivers/crypto/caam/jr.c +++ b/drivers/crypto/caam/jr.c @@ -324,8 +324,8 @@ void caam_jr_free(struct device *rdev) EXPORT_SYMBOL(caam_jr_free); /** - * caam_jr_enqueue() - Enqueue a job descriptor head. Returns 0 if OK, - * -EBUSY if the queue is full, -EIO if it cannot map the caller's + * caam_jr_enqueue() - Enqueue a job descriptor head. Returns -EINPROGRESS + * if OK, -ENOSPC if the queue is full, -EIO if it cannot map the caller's * descriptor. * @dev: device of the job ring to be used. This device should have * been assigned prior by caam_jr_register(). @@ -377,7 +377,7 @@ int caam_jr_enqueue(struct device *dev, u32 *desc, CIRC_SPACE(head, tail, JOBR_DEPTH) <= 0) { spin_unlock_bh(&jrp->inplock); dma_unmap_single(dev, desc_dma, desc_size, DMA_TO_DEVICE); - return -EBUSY; + return -ENOSPC; } head_entry = &jrp->entinfo[head]; @@ -414,7 +414,7 @@ int caam_jr_enqueue(struct device *dev, u32 *desc, spin_unlock_bh(&jrp->inplock); - return 0; + return -EINPROGRESS; } EXPORT_SYMBOL(caam_jr_enqueue); diff --git a/drivers/crypto/caam/key_gen.c b/drivers/crypto/caam/key_gen.c index 5a851dd..b0e8a49 100644 --- a/drivers/crypto/caam/key_gen.c +++ b/drivers/crypto/caam/key_gen.c @@ -108,7 +108,7 @@ int gen_split_key(struct device *jrdev, u8 *key_out, init_completion(&result.completion); ret = caam_jr_enqueue(jrdev, desc, split_key_done, &result); - if (!ret) { + if (ret == -EINPROGRESS) { /* in progress */ wait_for_completion(&result.completion); ret = result.err;