From patchwork Mon Apr 13 09:58:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Corentin LABBE X-Patchwork-Id: 11485409 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 C1D3E912 for ; Mon, 13 Apr 2020 10:09:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 99A6420732 for ; Mon, 13 Apr 2020 10:09:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="eip+HJkV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728565AbgDMKFv (ORCPT ); Mon, 13 Apr 2020 06:05:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42280 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1728341AbgDMKE4 (ORCPT ); Mon, 13 Apr 2020 06:04:56 -0400 Received: from mail-wm1-x342.google.com (mail-wm1-x342.google.com [IPv6:2a00:1450:4864:20::342]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB97EC00860D for ; Mon, 13 Apr 2020 02:58:20 -0700 (PDT) Received: by mail-wm1-x342.google.com with SMTP id e26so8836798wmk.5 for ; Mon, 13 Apr 2020 02:58:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=G7VT+rXA6jxG6rg4hlrqmUQTEAmnc8NAUNXihJOxkBI=; b=eip+HJkVCdM/q2LswUPoVTcClek1BNXiTApFeCQ3WuhHgPAWBID8afOzuR+Al4Ehxc Cx6kftkG9OHHyOTGf0OZyh6k9mk6gdNzNC4Xy02/Cftv2wL7LhadStPE6KGjkt2CUnvB ezYJ8mvHW4wapclLIAIz15rqN8gMYRN6rPWWyRNBT0vJ0/2OielC6PXAk0QnIGzJ0dlV /xWv07iFsVKVtpr4L0F6fu2dufuL+a5RZPA2y8koUOLq3DhHTw0LDUnLmDEQGYzYpMRz uUMdamuJ5XyCBpHk8oAobDYHacJfZKp8TSgZVZdaGR4yYCYHHDV4phwvYeNzOuy8Limz O0Fg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=G7VT+rXA6jxG6rg4hlrqmUQTEAmnc8NAUNXihJOxkBI=; b=mU3DnG8S1LjrRFgSwRY4P59XwSqIzL8BH6lt7Du4ugaT4m8/470neThfbFTnX0Kxje YAz8UQmFzYKvCaO7J4B9nQrQK1FHw/VJcHMr8Vh89IWbsSRfLzQGu290Ls4tvObhcqal 682cNHJlcRlJsUj/aToVfebaig5EtyBRCOqUP7miFoVWB49MrNXWWDtwbIn6jNC5Jno1 E+QG4+m+4wvOWOqujWaCuke1iBL5p6ec7nkxu77iwnjFM0AgCpRzkwS1tgIbkbB/+5vO 4fgrw0axaVufk87ZImPrK018+ESl75zrIeBg/ekLbNCHi29RwHtiBFD30AfhGbLwUGBh apsw== X-Gm-Message-State: AGi0PubwOi9iW9lcuxbLiEoRm+KYjTBBEWTXNiB+Hv3Tu774qVfc+Jm5 EOUldRbzxzEL/x6zqhATHyMBAw== X-Google-Smtp-Source: APiQypLO+YoVZ8X90pqt5HkiEY1J5I17TjMt6Xbi4yL5nOzcUw7d752pCaOAkNr3AShZ/TcZFI4/zA== X-Received: by 2002:a7b:ce13:: with SMTP id m19mr14185079wmc.76.1586771899227; Mon, 13 Apr 2020 02:58:19 -0700 (PDT) Received: from localhost.localdomain ([51.15.160.169]) by smtp.googlemail.com with ESMTPSA id v21sm13594491wmj.8.2020.04.13.02.58.18 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 13 Apr 2020 02:58:18 -0700 (PDT) From: Corentin Labbe To: davem@davemloft.net, herbert@gondor.apana.org.au, mripard@kernel.org, wens@csie.org Cc: linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, Corentin Labbe Subject: [PATCH 3/9] crypto: sun8i-ce: split into prepare/run/unprepare Date: Mon, 13 Apr 2020 09:58:03 +0000 Message-Id: <1586771889-3299-4-git-send-email-clabbe@baylibre.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1586771889-3299-1-git-send-email-clabbe@baylibre.com> References: <1586771889-3299-1-git-send-email-clabbe@baylibre.com> Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org This patch split the do_one_request into three. Prepare will handle all DMA mapping and initialisation of the task structure. Unprepare will clean all DMA mapping. And the do_one_request will be limited to just executing the task. Signed-off-by: Corentin Labbe --- .../allwinner/sun8i-ce/sun8i-ce-cipher.c | 70 ++++++++++++++++--- drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h | 4 ++ 2 files changed, 66 insertions(+), 8 deletions(-) diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c index 7fd19667bceb..fc0a2299c701 100644 --- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c +++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c @@ -78,8 +78,9 @@ static int sun8i_ce_cipher_fallback(struct skcipher_request *areq) return err; } -static int sun8i_ce_cipher(struct skcipher_request *areq) +static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req) { + struct skcipher_request *areq = container_of(async_req, struct skcipher_request, base); struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq); struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm); struct sun8i_ce_dev *ce = op->ce; @@ -237,7 +238,9 @@ static int sun8i_ce_cipher(struct skcipher_request *areq) } chan->timeout = areq->cryptlen; - err = sun8i_ce_run_task(ce, flow, crypto_tfm_alg_name(areq->base.tfm)); + rctx->nr_sgs = nr_sgs; + rctx->nr_sgd = nr_sgd; + return 0; theend_sgs: if (areq->src == areq->dst) { @@ -271,13 +274,64 @@ static int sun8i_ce_cipher(struct skcipher_request *areq) return err; } -static int sun8i_ce_handle_cipher_request(struct crypto_engine *engine, void *areq) +int sun8i_ce_cipher_run(struct crypto_engine *engine, void *areq) { - int err; struct skcipher_request *breq = container_of(areq, struct skcipher_request, base); + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(breq); + struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm); + struct sun8i_ce_dev *ce = op->ce; + struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(breq); + int flow, err; - err = sun8i_ce_cipher(breq); + flow = rctx->flow; + err = sun8i_ce_run_task(ce, flow, crypto_tfm_alg_name(breq->base.tfm)); crypto_finalize_skcipher_request(engine, breq, err); + return 0; +} + +static int sun8i_ce_cipher_unprepare(struct crypto_engine *engine, void *async_req) +{ + struct skcipher_request *areq = container_of(async_req, struct skcipher_request, base); + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq); + struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm); + struct sun8i_ce_dev *ce = op->ce; + struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq); + struct sun8i_ce_flow *chan; + struct ce_task *cet; + unsigned int ivsize, offset; + int nr_sgs = rctx->nr_sgs; + int nr_sgd = rctx->nr_sgd; + int flow; + + flow = rctx->flow; + chan = &ce->chanlist[flow]; + cet = chan->tl; + ivsize = crypto_skcipher_ivsize(tfm); + + if (areq->src == areq->dst) { + dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_BIDIRECTIONAL); + } else { + if (nr_sgs > 0) + dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_TO_DEVICE); + dma_unmap_sg(ce->dev, areq->dst, nr_sgd, DMA_FROM_DEVICE); + } + + if (areq->iv && ivsize > 0) { + if (cet->t_iv) + dma_unmap_single(ce->dev, cet->t_iv, rctx->ivlen, + DMA_TO_DEVICE); + offset = areq->cryptlen - ivsize; + if (rctx->op_dir & CE_DECRYPTION) { + memcpy(areq->iv, rctx->backup_iv, ivsize); + kzfree(rctx->backup_iv); + } else { + scatterwalk_map_and_copy(areq->iv, areq->dst, offset, + ivsize, 0); + } + kfree(rctx->bounce_iv); + } + + dma_unmap_single(ce->dev, cet->t_key, op->keylen, DMA_TO_DEVICE); return 0; } @@ -347,9 +401,9 @@ int sun8i_ce_cipher_init(struct crypto_tfm *tfm) crypto_tfm_alg_driver_name(&sktfm->base), crypto_tfm_alg_driver_name(crypto_skcipher_tfm(&op->fallback_tfm->base))); - op->enginectx.op.do_one_request = sun8i_ce_handle_cipher_request; - op->enginectx.op.prepare_request = NULL; - op->enginectx.op.unprepare_request = NULL; + op->enginectx.op.do_one_request = sun8i_ce_cipher_run; + op->enginectx.op.prepare_request = sun8i_ce_cipher_prepare; + op->enginectx.op.unprepare_request = sun8i_ce_cipher_unprepare; err = pm_runtime_get_sync(op->ce->dev); if (err < 0) diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h index c9c7ef8299e2..fe97fee74e47 100644 --- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h +++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h @@ -182,6 +182,8 @@ struct sun8i_ce_dev { * @backup_iv: buffer which contain the next IV to store * @bounce_iv: buffer which contain a copy of IV * @ivlen: size of bounce_iv + * @nr_sgs: The number of source SG (as given by dma_map_sg()) + * @nr_sgd: The number of destination SG (as given by dma_map_sg()) */ struct sun8i_cipher_req_ctx { u32 op_dir; @@ -189,6 +191,8 @@ struct sun8i_cipher_req_ctx { void *backup_iv; void *bounce_iv; unsigned int ivlen; + int nr_sgs; + int nr_sgd; }; /*