From patchwork Mon Apr 28 10:49:42 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 4076461 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 765D29FAD8 for ; Mon, 28 Apr 2014 10:52:57 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 75D552021B for ; Mon, 28 Apr 2014 10:52:56 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5AC2920295 for ; Mon, 28 Apr 2014 10:52:55 +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 1Wej8r-0005EP-Av; Mon, 28 Apr 2014 10:50:33 +0000 Received: from galois.linutronix.de ([2001:470:1f0b:db:abcd:42:0:1]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Wej89-0003vH-0V for linux-arm-kernel@lists.infradead.org; Mon, 28 Apr 2014 10:49:50 +0000 Received: from localhost ([127.0.0.1] helo=ionos.tec.linutronix.de) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1Wej7n-00065N-4B; Mon, 28 Apr 2014 12:49:27 +0200 Message-Id: <20140428104642.986759754@linutronix.de> User-Agent: quilt/0.60-1 Date: Mon, 28 Apr 2014 10:49:42 -0000 From: Thomas Gleixner To: dmaengine@vger.kernel.org Subject: [patch V2 3/6] dma: edma: Create private pset struct References: <20140428104416.464002156@linutronix.de> Content-Disposition: inline; filename=dma-edma-create-private-pset-struct.patch X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1, SHORTCIRCUIT=-0.0001 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140428_034949_291989_02BA1C22 X-CRM114-Status: GOOD ( 14.96 ) X-Spam-Score: -0.7 (/) Cc: vinod.koul@intel.com, nsekhar@ti.com, Peter Ujfalusi , joelf@ti.com, dan.j.williams@intel.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Preparatory patch to support finer grained accounting. Move the edma_params array out of edma_desc so we can add further per pset data to it. Signed-off-by: Thomas Gleixner --- drivers/dma/edma.c | 67 ++++++++++++++++++++++++++++------------------------- 1 file changed, 36 insertions(+), 31 deletions(-) Index: linux-2.6/drivers/dma/edma.c =================================================================== --- linux-2.6.orig/drivers/dma/edma.c +++ linux-2.6/drivers/dma/edma.c @@ -57,6 +57,10 @@ #define EDMA_MAX_SLOTS MAX_NR_SG #define EDMA_DESCRIPTORS 16 +struct edma_pset { + struct edmacc_param param; +}; + struct edma_desc { struct virt_dma_desc vdesc; struct list_head node; @@ -65,7 +69,7 @@ struct edma_desc { int pset_nr; int processed; u32 residue; - struct edmacc_param pset[0]; + struct edma_pset pset[0]; }; struct edma_cc; @@ -141,7 +145,7 @@ static void edma_execute(struct edma_cha /* Write descriptor PaRAM set(s) */ for (i = 0; i < nslots; i++) { j = i + edesc->processed; - edma_write_slot(echan->slot[i], &edesc->pset[j]); + edma_write_slot(echan->slot[i], &edesc->pset[j].param); dev_dbg(echan->vchan.chan.device->dev, "\n pset[%d]:\n" " chnum\t%d\n" @@ -155,14 +159,14 @@ static void edma_execute(struct edma_cha " cidx\t%08x\n" " lkrld\t%08x\n", j, echan->ch_num, echan->slot[i], - edesc->pset[j].opt, - edesc->pset[j].src, - edesc->pset[j].dst, - edesc->pset[j].a_b_cnt, - edesc->pset[j].ccnt, - edesc->pset[j].src_dst_bidx, - edesc->pset[j].src_dst_cidx, - edesc->pset[j].link_bcntrld); + edesc->pset[j].param.opt, + edesc->pset[j].param.src, + edesc->pset[j].param.dst, + edesc->pset[j].param.a_b_cnt, + edesc->pset[j].param.ccnt, + edesc->pset[j].param.src_dst_bidx, + edesc->pset[j].param.src_dst_cidx, + edesc->pset[j].param.link_bcntrld); /* Link to the previous slot if not the last set */ if (i != (nslots - 1)) edma_link(echan->slot[i], echan->slot[i+1]); @@ -276,13 +280,14 @@ static int edma_control(struct dma_chan * @dma_length: Total length of the DMA transfer * @direction: Direction of the transfer */ -static int edma_config_pset(struct dma_chan *chan, struct edmacc_param *pset, +static int edma_config_pset(struct dma_chan *chan, struct edma_pset *epset, dma_addr_t src_addr, dma_addr_t dst_addr, u32 burst, enum dma_slave_buswidth dev_width, unsigned int dma_length, enum dma_transfer_direction direction) { struct edma_chan *echan = to_edma_chan(chan); struct device *dev = chan->device->dev; + struct edmacc_param *param = &epset->param; int acnt, bcnt, ccnt, cidx; int src_bidx, dst_bidx, src_cidx, dst_cidx; int absync; @@ -353,26 +358,26 @@ static int edma_config_pset(struct dma_c return -EINVAL; } - pset->opt = EDMA_TCC(EDMA_CHAN_SLOT(echan->ch_num)); + param->opt = EDMA_TCC(EDMA_CHAN_SLOT(echan->ch_num)); /* Configure A or AB synchronized transfers */ if (absync) - pset->opt |= SYNCDIM; + param->opt |= SYNCDIM; - pset->src = src_addr; - pset->dst = dst_addr; + param->src = src_addr; + param->dst = dst_addr; - pset->src_dst_bidx = (dst_bidx << 16) | src_bidx; - pset->src_dst_cidx = (dst_cidx << 16) | src_cidx; + param->src_dst_bidx = (dst_bidx << 16) | src_bidx; + param->src_dst_cidx = (dst_cidx << 16) | src_cidx; - pset->a_b_cnt = bcnt << 16 | acnt; - pset->ccnt = ccnt; + param->a_b_cnt = bcnt << 16 | acnt; + param->ccnt = ccnt; /* * Only time when (bcntrld) auto reload is required is for * A-sync case, and in this case, a requirement of reload value * of SZ_64K-1 only is assured. 'link' is initially set to NULL * and then later will be populated by edma_execute. */ - pset->link_bcntrld = 0xffffffff; + param->link_bcntrld = 0xffffffff; return absync; } @@ -459,11 +464,11 @@ static struct dma_async_tx_descriptor *e /* If this is the last in a current SG set of transactions, enable interrupts so that next set is processed */ if (!((i+1) % MAX_NR_SG)) - edesc->pset[i].opt |= TCINTEN; + edesc->pset[i].param.opt |= TCINTEN; /* If this is the last set, enable completion interrupt flag */ if (i == sg_len - 1) - edesc->pset[i].opt |= TCINTEN; + edesc->pset[i].param.opt |= TCINTEN; } return vchan_tx_prep(&echan->vchan, &edesc->vdesc, tx_flags); @@ -584,14 +589,14 @@ static struct dma_async_tx_descriptor *e " cidx\t%08x\n" " lkrld\t%08x\n", i, echan->ch_num, echan->slot[i], - edesc->pset[i].opt, - edesc->pset[i].src, - edesc->pset[i].dst, - edesc->pset[i].a_b_cnt, - edesc->pset[i].ccnt, - edesc->pset[i].src_dst_bidx, - edesc->pset[i].src_dst_cidx, - edesc->pset[i].link_bcntrld); + edesc->pset[i].param.opt, + edesc->pset[i].param.src, + edesc->pset[i].param.dst, + edesc->pset[i].param.a_b_cnt, + edesc->pset[i].param.ccnt, + edesc->pset[i].param.src_dst_bidx, + edesc->pset[i].param.src_dst_cidx, + edesc->pset[i].param.link_bcntrld); edesc->absync = ret; @@ -599,7 +604,7 @@ static struct dma_async_tx_descriptor *e * Enable interrupts for every period because callback * has to be called for every period. */ - edesc->pset[i].opt |= TCINTEN; + edesc->pset[i].param.opt |= TCINTEN; } return vchan_tx_prep(&echan->vchan, &edesc->vdesc, tx_flags);