From: Russell King Subject: [PATCH 08/18] crypto: marvell: factor out adding an operation and launching it Date: Sun, 18 Oct 2015 17:24:06 +0100 Message-ID: References: <20151018161649.GA6651@n2100.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Cc: Herbert Xu , "David S. Miller" , linux-crypto@vger.kernel.org To: Boris Brezillon , Arnaud Ebalard , Thomas Petazzoni , Jason Cooper Return-path: Received: from pandora.arm.linux.org.uk ([78.32.30.218]:45239 "EHLO pandora.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932094AbbJRQYV (ORCPT ); Sun, 18 Oct 2015 12:24:21 -0400 In-Reply-To: <20151018161649.GA6651@n2100.arm.linux.org.uk> Content-Disposition: inline Sender: linux-crypto-owner@vger.kernel.org List-ID: Add a helper to add the fragment operation block followed by the DMA entry to launch the operation. Although at the moment this pattern only strictly appears at one site, two other sites can be factored as well by slightly changing the order in which the DMA operations are performed. This should be harmless as the only thing which matters is to have all the data loaded into SRAM prior to launching the operation. Signed-off-by: Russell King --- drivers/crypto/marvell/hash.c | 74 +++++++++++++++++++++---------------------- 1 file changed, 36 insertions(+), 38 deletions(-) diff --git a/drivers/crypto/marvell/hash.c b/drivers/crypto/marvell/hash.c index 938ecfeb8ffe..8111e73ca848 100644 --- a/drivers/crypto/marvell/hash.c +++ b/drivers/crypto/marvell/hash.c @@ -472,6 +472,29 @@ static int mv_cesa_ahash_cache_req(struct ahash_request *req, bool *cached) } static struct mv_cesa_op_ctx * +mv_cesa_dma_add_frag(struct mv_cesa_tdma_chain *chain, + struct mv_cesa_op_ctx *tmpl, unsigned int frag_len, + gfp_t flags) +{ + struct mv_cesa_op_ctx *op; + int ret; + + op = mv_cesa_dma_add_op(chain, tmpl, false, flags); + if (IS_ERR(op)) + return op; + + /* Set the operation block fragment length. */ + mv_cesa_set_mac_op_frag_len(op, frag_len); + + /* Append dummy desc to launch operation */ + ret = mv_cesa_dma_add_dummy_launch(chain, flags); + if (ret) + return ERR_PTR(ret); + + return op; +} + +static struct mv_cesa_op_ctx * mv_cesa_ahash_dma_add_cache(struct mv_cesa_tdma_chain *chain, struct mv_cesa_ahash_dma_iter *dma_iter, struct mv_cesa_ahash_req *creq, @@ -493,18 +516,9 @@ mv_cesa_ahash_dma_add_cache(struct mv_cesa_tdma_chain *chain, if (ret) return ERR_PTR(ret); - if (!dma_iter->base.op_len) { - op = mv_cesa_dma_add_op(chain, &creq->op_tmpl, false, flags); - if (IS_ERR(op)) - return op; - - mv_cesa_set_mac_op_frag_len(op, creq->cache_ptr); - - /* Add dummy desc to launch crypto operation */ - ret = mv_cesa_dma_add_dummy_launch(chain, flags); - if (ret) - return ERR_PTR(ret); - } + if (!dma_iter->base.op_len) + op = mv_cesa_dma_add_frag(chain, &creq->op_tmpl, + creq->cache_ptr, flags); return op; } @@ -518,28 +532,22 @@ mv_cesa_ahash_dma_add_data(struct mv_cesa_tdma_chain *chain, struct mv_cesa_op_ctx *op; int ret; - op = mv_cesa_dma_add_op(chain, &creq->op_tmpl, false, flags); + /* Add input transfers */ + ret = mv_cesa_dma_add_op_transfers(chain, &dma_iter->base, + &dma_iter->src, flags); + if (ret) + return ERR_PTR(ret); + + op = mv_cesa_dma_add_frag(chain, &creq->op_tmpl, dma_iter->base.op_len, + flags); if (IS_ERR(op)) return op; - mv_cesa_set_mac_op_frag_len(op, dma_iter->base.op_len); - if (mv_cesa_mac_op_is_first_frag(&creq->op_tmpl)) mv_cesa_update_op_cfg(&creq->op_tmpl, CESA_SA_DESC_CFG_MID_FRAG, CESA_SA_DESC_CFG_FRAG_MSK); - /* Add input transfers */ - ret = mv_cesa_dma_add_op_transfers(chain, &dma_iter->base, - &dma_iter->src, flags); - if (ret) - return ERR_PTR(ret); - - /* Add dummy desc to launch crypto operation */ - ret = mv_cesa_dma_add_dummy_launch(chain, flags); - if (ret) - return ERR_PTR(ret); - return op; } @@ -603,12 +611,6 @@ mv_cesa_ahash_dma_last_req(struct mv_cesa_tdma_chain *chain, CESA_SA_DESC_CFG_MID_FRAG, CESA_SA_DESC_CFG_FRAG_MSK); - op = mv_cesa_dma_add_op(chain, &creq->op_tmpl, false, flags); - if (IS_ERR(op)) - return op; - - mv_cesa_set_mac_op_frag_len(op, trailerlen - padoff); - ret = mv_cesa_dma_add_data_transfer(chain, CESA_SA_DATA_SRAM_OFFSET, ahashdreq->padding_dma + @@ -619,12 +621,8 @@ mv_cesa_ahash_dma_last_req(struct mv_cesa_tdma_chain *chain, if (ret) return ERR_PTR(ret); - /* Add dummy desc to launch crypto operation */ - ret = mv_cesa_dma_add_dummy_launch(chain, flags); - if (ret) - return ERR_PTR(ret); - - return op; + return mv_cesa_dma_add_frag(chain, &creq->op_tmpl, trailerlen - padoff, + flags); } static int mv_cesa_ahash_dma_req_init(struct ahash_request *req) -- 2.1.0