From: Maxime Ripard Subject: [PATCH 6/8] async_tx: adding mult and sum_product flags Date: Tue, 12 May 2015 17:37:41 +0200 Message-ID: <1431445063-20226-7-git-send-email-maxime.ripard@free-electrons.com> References: <1431445063-20226-1-git-send-email-maxime.ripard@free-electrons.com> Cc: dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, Lior Amsalem , Thomas Petazzoni , Herbert Xu , "David S. Miller" , Maxime Ripard To: Vinod Koul , Dan Williams , Gregory Clement , Jason Cooper , Andrew Lunn , Sebastian Hesselbarth Return-path: Received: from down.free-electrons.com ([37.187.137.238]:57315 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753338AbbELPkP (ORCPT ); Tue, 12 May 2015 11:40:15 -0400 In-Reply-To: <1431445063-20226-1-git-send-email-maxime.ripard@free-electrons.com> Sender: linux-crypto-owner@vger.kernel.org List-ID: From: Lior Amsalem Some engines (like Marvell mv_xor) do not support mult and sum_product operations as part of the pq support. This patch adds new flags: DMA_PREP_PQ_MULT & DMA_PREP_PQ_SUM_PRODUCT these flags helps the driver identify such operations. Signed-off-by: Lior Amsalem Reviewed-by: Ofer Heifetz Reviewed-by: Nadav Haklai Signed-off-by: Maxime Ripard --- crypto/async_tx/async_raid6_recov.c | 4 ++-- include/linux/dmaengine.h | 4 ++++ 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/crypto/async_tx/async_raid6_recov.c b/crypto/async_tx/async_raid6_recov.c index 934a84981495..2db5486fd873 100644 --- a/crypto/async_tx/async_raid6_recov.c +++ b/crypto/async_tx/async_raid6_recov.c @@ -47,7 +47,7 @@ async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef, struct device *dev = dma->dev; dma_addr_t pq[2]; struct dma_async_tx_descriptor *tx; - enum dma_ctrl_flags dma_flags = DMA_PREP_PQ_DISABLE_P; + enum dma_ctrl_flags dma_flags = DMA_PREP_PQ_DISABLE_P | DMA_PREP_PQ_SUM_PRODUCT; if (submit->flags & ASYNC_TX_FENCE) dma_flags |= DMA_PREP_FENCE; @@ -111,7 +111,7 @@ async_mult(struct page *dest, struct page *src, u8 coef, size_t len, dma_addr_t dma_dest[2]; struct device *dev = dma->dev; struct dma_async_tx_descriptor *tx; - enum dma_ctrl_flags dma_flags = DMA_PREP_PQ_DISABLE_P; + enum dma_ctrl_flags dma_flags = DMA_PREP_PQ_DISABLE_P | DMA_PREP_PQ_MULT; if (submit->flags & ASYNC_TX_FENCE) dma_flags |= DMA_PREP_FENCE; diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index ad419757241f..f19ecebb4d3f 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -174,6 +174,8 @@ struct dma_interleaved_template { * operation it continues the calculation with new sources * @DMA_PREP_FENCE - tell the driver that subsequent operations depend * on the result of this operation + * @DMA_PREP_PQ_MULT - tell the driver that this is a mult request + * @DMA_PREP_PQ_SUM_PRODUCT - tell the driver that this is a sum product request */ enum dma_ctrl_flags { DMA_PREP_INTERRUPT = (1 << 0), @@ -182,6 +184,8 @@ enum dma_ctrl_flags { DMA_PREP_PQ_DISABLE_Q = (1 << 3), DMA_PREP_CONTINUE = (1 << 4), DMA_PREP_FENCE = (1 << 5), + DMA_PREP_PQ_MULT = (1 << 10), + DMA_PREP_PQ_SUM_PRODUCT = (1 << 11), }; /** -- 2.4.0