From patchwork Tue Jun 7 07:54:12 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: 9160033 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 68C7260572 for ; Tue, 7 Jun 2016 07:57:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5A3E226861 for ; Tue, 7 Jun 2016 07:57:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4EB132793B; Tue, 7 Jun 2016 07:57:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E44EC26861 for ; Tue, 7 Jun 2016 07:57:45 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1bABs9-0002al-I9; Tue, 07 Jun 2016 07:56:25 +0000 Received: from smtp-3.sys.kth.se ([2001:6b0:1:1300:250:56ff:fea6:2de2]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1bABrQ-00022a-G2 for linux-arm-kernel@lists.infradead.org; Tue, 07 Jun 2016 07:55:43 +0000 Received: from smtp-3.sys.kth.se (localhost.localdomain [127.0.0.1]) by smtp-3.sys.kth.se (Postfix) with ESMTP id ECC442B78; Tue, 7 Jun 2016 09:54:56 +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 WnU9epFuJ34i; Tue, 7 Jun 2016 09:54:56 +0200 (CEST) X-KTH-Auth: niso [89.233.230.99] X-KTH-mail-from: niklas.soderlund+renesas@ragnatech.se Received: from bismarck.berto.se (dynamic.0.6.79d1f80.14cc20ac3a53.cust.bredband2.com [89.233.230.99]) by smtp-3.sys.kth.se (Postfix) with ESMTPSA id CA1A62B45; Tue, 7 Jun 2016 09:54:55 +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: [PATCHv8 5/6] dmaengine: rcar-dmac: group slave configuration Date: Tue, 7 Jun 2016 09:54:12 +0200 Message-Id: <1465286053-27258-6-git-send-email-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.8.2 In-Reply-To: <1465286053-27258-1-git-send-email-niklas.soderlund+renesas@ragnatech.se> References: <1465286053-27258-1-git-send-email-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-20160607_005541_135939_1910288B X-CRM114-Status: GOOD ( 12.76 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: 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+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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 dfb1792..b0c3bb2 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: @@ -1038,7 +1044,7 @@ 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); } @@ -1093,7 +1099,7 @@ 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); @@ -1110,10 +1116,10 @@ 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; }