From patchwork Mon Sep 14 14:44:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11774091 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 904CC1580 for ; Mon, 14 Sep 2020 15:08:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7163D2193E for ; Mon, 14 Sep 2020 15:08:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="RQyjQHnF" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726055AbgINPHl (ORCPT ); Mon, 14 Sep 2020 11:07:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43716 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726074AbgINPG5 (ORCPT ); Mon, 14 Sep 2020 11:06:57 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D15D8C06174A; Mon, 14 Sep 2020 08:06:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=Guqxj07xwr5MuMGWT2PdBQLUVmSBHz1SxHMxp26SQAM=; b=RQyjQHnFNjLhYXRu+xmRV3KJiG MI4IBCdvEOohACxvVh+/xYssZZYT/IHYbakxqGhpgZ+8s/1SjVgBhq4La1P7D7SzWc0LrP+gpv0Dj /x3krhZ2DWcnxNij0hB9XwtUGZPPcbNjJ8uT3YlRdl7jfJBRTJ3TYLcG8DwbWQNHbUCIKCdbXCFrU XpVBEJGxs7Z9ZqwAQPVb2AJ1jbglHYJLt0GPZJbv5s0RO4qpWeMmA74RaIcfsDKvmjT4gEnd3bWPp kUpswxcg1eMD/zSb1FKwpQHCKOo0P4y025Vf0Oap/avayb6TqAW2XUTkfB0ZjbxPOaVbQgi4x1e+A gNbK6IOA==; Received: from 089144214092.atnat0023.highway.a1.net ([89.144.214.92] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kHq3q-0002xu-5N; Mon, 14 Sep 2020 15:06:30 +0000 From: Christoph Hellwig To: Mauro Carvalho Chehab , Thomas Bogendoerfer , "James E.J. Bottomley" , Joonyoung Shim , Seung-Woo Kim , Ben Skeggs , Marek Szyprowski , Tomasz Figa , Matt Porter , iommu@lists.linux-foundation.org Cc: Stefan Richter , linux1394-devel@lists.sourceforge.net, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-samsung-soc@vger.kernel.org, nouveau@lists.freedesktop.org, netdev@vger.kernel.org, linux-scsi@vger.kernel.org, linux-mm@kvack.org, alsa-devel@alsa-project.org Subject: [PATCH 09/17] sgiwd93: convert to dma_alloc_noncoherent Date: Mon, 14 Sep 2020 16:44:25 +0200 Message-Id: <20200914144433.1622958-10-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200914144433.1622958-1-hch@lst.de> References: <20200914144433.1622958-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Use the new non-coherent DMA API including proper ownership transfers. This also means we can allocate the memory as DMA_TO_DEVICE instead of bidirectional. Signed-off-by: Christoph Hellwig --- drivers/scsi/sgiwd93.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/scsi/sgiwd93.c b/drivers/scsi/sgiwd93.c index 3bdf0deb8f1529..cf1030c9dda17f 100644 --- a/drivers/scsi/sgiwd93.c +++ b/drivers/scsi/sgiwd93.c @@ -95,7 +95,7 @@ void fill_hpc_entries(struct ip22_hostdata *hd, struct scsi_cmnd *cmd, int din) */ hcp->desc.pbuf = 0; hcp->desc.cntinfo = HPCDMA_EOX; - dma_cache_sync(hd->dev, hd->cpu, + dma_sync_single_for_device(hd->dev, hd->dma, (unsigned long)(hcp + 1) - (unsigned long)hd->cpu, DMA_TO_DEVICE); } @@ -234,8 +234,8 @@ static int sgiwd93_probe(struct platform_device *pdev) hdata = host_to_hostdata(host); hdata->dev = &pdev->dev; - hdata->cpu = dma_alloc_attrs(&pdev->dev, HPC_DMA_SIZE, &hdata->dma, - GFP_KERNEL, DMA_ATTR_NON_CONSISTENT); + hdata->cpu = dma_alloc_noncoherent(&pdev->dev, HPC_DMA_SIZE, + &hdata->dma, DMA_TO_DEVICE, GFP_KERNEL); if (!hdata->cpu) { printk(KERN_WARNING "sgiwd93: Could not allocate memory for " "host %d buffer.\n", unit); @@ -274,8 +274,8 @@ static int sgiwd93_probe(struct platform_device *pdev) out_irq: free_irq(irq, host); out_free: - dma_free_attrs(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma, - DMA_ATTR_NON_CONSISTENT); + dma_free_noncoherent(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma, + DMA_TO_DEVICE); out_put: scsi_host_put(host); out: @@ -291,8 +291,8 @@ static int sgiwd93_remove(struct platform_device *pdev) scsi_remove_host(host); free_irq(pd->irq, host); - dma_free_attrs(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma, - DMA_ATTR_NON_CONSISTENT); + dma_free_noncoherent(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma, + DMA_TO_DEVICE); scsi_host_put(host); return 0; }