From patchwork Fri Jan 13 17:14:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 13101384 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 31336C678D8 for ; Fri, 13 Jan 2023 17:24:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230084AbjAMRYd (ORCPT ); Fri, 13 Jan 2023 12:24:33 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37926 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231240AbjAMRXz (ORCPT ); Fri, 13 Jan 2023 12:23:55 -0500 Received: from post.baikalelectronics.com (post.baikalelectronics.com [213.79.110.86]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 7246675D3B; Fri, 13 Jan 2023 09:14:43 -0800 (PST) Received: from post.baikalelectronics.com (localhost.localdomain [127.0.0.1]) by post.baikalelectronics.com (Proxmox) with ESMTP id 81E82E0F2B; Fri, 13 Jan 2023 20:14:34 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= baikalelectronics.ru; h=cc:cc:content-transfer-encoding :content-type:content-type:date:from:from:in-reply-to:message-id :mime-version:references:reply-to:subject:subject:to:to; s=post; bh=Btdzx/ZX3GdEwT/RTf5wRs+T6GnL6ctqsHDeogwtp1c=; b=E5XKug3bpfiM RZuxE2Q2MptXkqt6xsVQ9ivMJW5kN1axcFd8XPMM0KbYs5SHxKPqLxF/SLVcRp3s 1VlB+lzUDGEBAEjDFXQ90fODRieqyXlJgzGazw62ug95/G742zCu4lYH5ZvqDg0D TrfF0+GkTSrIkK8Wku08o0+JNmGhkXE= Received: from mail.baikal.int (mail.baikal.int [192.168.51.25]) by post.baikalelectronics.com (Proxmox) with ESMTP id 54392E0F13; Fri, 13 Jan 2023 20:14:34 +0300 (MSK) Received: from localhost (10.8.30.26) by mail (192.168.51.25) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 13 Jan 2023 20:14:33 +0300 From: Serge Semin To: Gustavo Pimentel , Vinod Koul , Rob Herring , Bjorn Helgaas , Lorenzo Pieralisi , Cai Huoqing , Robin Murphy , Jingoo Han , Frank Li , Manivannan Sadhasivam CC: Serge Semin , Serge Semin , Alexey Malahov , Pavel Parkhomenko , =?utf-8?q?Krzys?= =?utf-8?q?ztof_Wilczy=C5=84ski?= , caihuoqing , Yoshihiro Shimoda , , , Subject: [PATCH v9 20/27] dmaengine: dw-edma: Drop DT-region allocation Date: Fri, 13 Jan 2023 20:14:02 +0300 Message-ID: <20230113171409.30470-21-Sergey.Semin@baikalelectronics.ru> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230113171409.30470-1-Sergey.Semin@baikalelectronics.ru> References: <20230113171409.30470-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-Originating-IP: [10.8.30.26] X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org There is no point in allocating an additional memory for the data target regions passed then to the client drivers. Just use the already available structures defined in the dw_edma_chip instance. Note these regions are unused in normal circumstances since they are specific to the case of eDMA being embedded into the DW PCIe End-point and having it's CSRs accessible over a End-point' BAR. This case is only known to be implemented as a part of the Synopsys PCIe EndPoint IP prototype kit. Signed-off-by: Serge Semin Reviewed-by: Manivannan Sadhasivam Tested-by: Manivannan Sadhasivam Acked-by: Vinod Koul --- drivers/dma/dw-edma/dw-edma-core.c | 21 ++++----------------- 1 file changed, 4 insertions(+), 17 deletions(-) diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c index 58808bec4148..040a88cfe070 100644 --- a/drivers/dma/dw-edma/dw-edma-core.c +++ b/drivers/dma/dw-edma/dw-edma-core.c @@ -738,7 +738,6 @@ static void dw_edma_free_chan_resources(struct dma_chan *dchan) static int dw_edma_channel_setup(struct dw_edma *dw, u32 wr_alloc, u32 rd_alloc) { struct dw_edma_chip *chip = dw->chip; - struct dw_edma_region *dt_region; struct device *dev = chip->dev; struct dw_edma_chan *chan; struct dw_edma_irq *irq; @@ -754,12 +753,6 @@ static int dw_edma_channel_setup(struct dw_edma *dw, u32 wr_alloc, u32 rd_alloc) for (i = 0; i < ch_cnt; i++) { chan = &dw->chan[i]; - dt_region = devm_kzalloc(dev, sizeof(*dt_region), GFP_KERNEL); - if (!dt_region) - return -ENOMEM; - - chan->vc.chan.private = dt_region; - chan->dw = dw; if (i < dw->wr_ch_cnt) { @@ -807,17 +800,11 @@ static int dw_edma_channel_setup(struct dw_edma *dw, u32 wr_alloc, u32 rd_alloc) chan->msi.data); chan->vc.desc_free = vchan_free_desc; - vchan_init(&chan->vc, dma); + chan->vc.chan.private = chan->dir == EDMA_DIR_WRITE ? + &dw->chip->dt_region_wr[chan->id] : + &dw->chip->dt_region_rd[chan->id]; - if (chan->dir == EDMA_DIR_WRITE) { - dt_region->paddr = chip->dt_region_wr[chan->id].paddr; - dt_region->vaddr = chip->dt_region_wr[chan->id].vaddr; - dt_region->sz = chip->dt_region_wr[chan->id].sz; - } else { - dt_region->paddr = chip->dt_region_rd[chan->id].paddr; - dt_region->vaddr = chip->dt_region_rd[chan->id].vaddr; - dt_region->sz = chip->dt_region_rd[chan->id].sz; - } + vchan_init(&chan->vc, dma); dw_edma_v0_core_device_config(chan); }