From patchwork Wed Aug 10 11:22:18 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 657682 Return-Path: X-Original-To: incoming-imx@patchwork.ozlabs.org Delivered-To: patchwork-incoming-imx@bilbo.ozlabs.org Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2001:1868:205::9]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3s8TPS3GVxz9t0m for ; Wed, 10 Aug 2016 21:26:36 +1000 (AEST) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bXRdA-0002dU-0G; Wed, 10 Aug 2016 11:25:04 +0000 Received: from smtp-3.sys.kth.se ([2001:6b0:1:1300:250:56ff:fea6:2de2]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bXRby-0001xE-9g for linux-arm-kernel@lists.infradead.org; Wed, 10 Aug 2016 11:23:52 +0000 Received: from smtp-3.sys.kth.se (localhost.localdomain [127.0.0.1]) by smtp-3.sys.kth.se (Postfix) with ESMTP id 710B32A19; Wed, 10 Aug 2016 13:23:07 +0200 (CEST) X-Virus-Scanned: by amavisd-new at kth.se Received: from smtp-3.sys.kth.se ([127.0.0.1]) by smtp-3.sys.kth.se (smtp-3.sys.kth.se [127.0.0.1]) (amavisd-new, port 10024) with LMTP id Oj9lg0dDKLmX; Wed, 10 Aug 2016 13:23:06 +0200 (CEST) X-KTH-Auth: niso [89.233.230.99] X-KTH-mail-from: niklas.soderlund+renesas@ragnatech.se Received: from bismarck.berto.se (unknown [89.233.230.99]) by smtp-3.sys.kth.se (Postfix) with ESMTPSA id 2112B29F7; Wed, 10 Aug 2016 13:23:06 +0200 (CEST) From: =?UTF-8?q?Niklas=20S=C3=B6derlund?= To: linux-renesas-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org, iommu@lists.linux-foundation.org, linux@armlinux.org.uk Subject: [PATCHv9 5/6] dmaengine: rcar-dmac: group slave configuration Date: Wed, 10 Aug 2016 13:22:18 +0200 Message-Id: <20160810112219.17964-6-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.9.2 In-Reply-To: <20160810112219.17964-1-niklas.soderlund+renesas@ragnatech.se> References: <20160810112219.17964-1-niklas.soderlund+renesas@ragnatech.se> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160810_042350_849695_5594D0DA X-CRM114-Status: GOOD ( 12.19 ) X-Spam-Score: -3.5 (---) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-3.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [2001:6b0:1:1300:250:56ff:fea6:2de2 listed in] [list.dnswl.org] 0.7 SPF_SOFTFAIL SPF: sender does not match SPF record (softfail) -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Niklas=20S=C3=B6derlund?= , arnd@arndb.de, vinod.koul@intel.com, linus.walleij@linaro.org, hch@infradead.org, laurent.pinchart@ideasonboard.com, dan.j.williams@intel.com, robin.murphy@arm.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org Group slave address and transfer size in own structs for source and destination. This is in preparation for hooking up the dma-mapping API to the slave addresses. Signed-off-by: Niklas Söderlund Reviewed-by: Laurent Pinchart --- drivers/dma/sh/rcar-dmac.c | 38 ++++++++++++++++++++++---------------- 1 file changed, 22 insertions(+), 16 deletions(-) diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index 0dd9538..cf983a9 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -118,14 +118,22 @@ struct rcar_dmac_desc_page { sizeof(struct rcar_dmac_xfer_chunk)) /* + * struct rcar_dmac_chan_slave - Slave configuration + * @slave_addr: slave memory address + * @xfer_size: size (in bytes) of hardware transfers + */ +struct rcar_dmac_chan_slave { + phys_addr_t slave_addr; + unsigned int xfer_size; +}; + +/* * struct rcar_dmac_chan - R-Car Gen2 DMA Controller Channel * @chan: base DMA channel object * @iomem: channel I/O memory base * @index: index of this channel in the controller - * @src_xfer_size: size (in bytes) of hardware transfers on the source side - * @dst_xfer_size: size (in bytes) of hardware transfers on the destination side - * @src_slave_addr: slave source memory address - * @dst_slave_addr: slave destination memory address + * @src: slave memory address and size on the source side + * @dst: slave memory address and size on the destination side * @mid_rid: hardware MID/RID for the DMA client using this channel * @lock: protects the channel CHCR register and the desc members * @desc.free: list of free descriptors @@ -142,10 +150,8 @@ struct rcar_dmac_chan { void __iomem *iomem; unsigned int index; - unsigned int src_xfer_size; - unsigned int dst_xfer_size; - dma_addr_t src_slave_addr; - dma_addr_t dst_slave_addr; + struct rcar_dmac_chan_slave src; + struct rcar_dmac_chan_slave dst; int mid_rid; spinlock_t lock; @@ -793,13 +799,13 @@ static void rcar_dmac_chan_configure_desc(struct rcar_dmac_chan *chan, case DMA_DEV_TO_MEM: chcr = RCAR_DMACHCR_DM_INC | RCAR_DMACHCR_SM_FIXED | RCAR_DMACHCR_RS_DMARS; - xfer_size = chan->src_xfer_size; + xfer_size = chan->src.xfer_size; break; case DMA_MEM_TO_DEV: chcr = RCAR_DMACHCR_DM_FIXED | RCAR_DMACHCR_SM_INC | RCAR_DMACHCR_RS_DMARS; - xfer_size = chan->dst_xfer_size; + xfer_size = chan->dst.xfer_size; break; case DMA_MEM_TO_MEM: @@ -1040,7 +1046,7 @@ rcar_dmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, } dev_addr = dir == DMA_DEV_TO_MEM - ? rchan->src_slave_addr : rchan->dst_slave_addr; + ? rchan->src.slave_addr : rchan->dst.slave_addr; return rcar_dmac_chan_prep_sg(rchan, sgl, sg_len, dev_addr, dir, flags, false); } @@ -1095,7 +1101,7 @@ rcar_dmac_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf_addr, } dev_addr = dir == DMA_DEV_TO_MEM - ? rchan->src_slave_addr : rchan->dst_slave_addr; + ? rchan->src.slave_addr : rchan->dst.slave_addr; desc = rcar_dmac_chan_prep_sg(rchan, sgl, sg_len, dev_addr, dir, flags, true); @@ -1112,10 +1118,10 @@ static int rcar_dmac_device_config(struct dma_chan *chan, * We could lock this, but you shouldn't be configuring the * channel, while using it... */ - rchan->src_slave_addr = cfg->src_addr; - rchan->dst_slave_addr = cfg->dst_addr; - rchan->src_xfer_size = cfg->src_addr_width; - rchan->dst_xfer_size = cfg->dst_addr_width; + rchan->src.slave_addr = cfg->src_addr; + rchan->dst.slave_addr = cfg->dst_addr; + rchan->src.xfer_size = cfg->src_addr_width; + rchan->dst.xfer_size = cfg->dst_addr_width; return 0; }