From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E024BC433E3 for ; Wed, 19 Aug 2020 06:56:43 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A627A20885 for ; Wed, 19 Aug 2020 06:56:43 +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="FfmYzkf9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A627A20885 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3A31A6B0074; Wed, 19 Aug 2020 02:56:43 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 379B26B0075; Wed, 19 Aug 2020 02:56:43 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 243366B0078; Wed, 19 Aug 2020 02:56:43 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0127.hostedemail.com [216.40.44.127]) by kanga.kvack.org (Postfix) with ESMTP id 0F9C96B0074 for ; Wed, 19 Aug 2020 02:56:43 -0400 (EDT) Received: from smtpin20.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id C29058248068 for ; Wed, 19 Aug 2020 06:56:42 +0000 (UTC) X-FDA: 77166410244.20.bean36_590f8fc27026 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin20.hostedemail.com (Postfix) with ESMTP id 9B23B180C07A3 for ; Wed, 19 Aug 2020 06:56:42 +0000 (UTC) X-HE-Tag: bean36_590f8fc27026 X-Filterd-Recvd-Size: 5306 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf32.hostedemail.com (Postfix) with ESMTP for ; Wed, 19 Aug 2020 06:56:42 +0000 (UTC) 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=3H4NansDDN6m4kLuhIk/kp+Z4N3mSn8cpB0zE9ycnQw=; b=FfmYzkf9G6zwFUNNR629I5LzS3 sycbpl6XBJNQxWdPFjivtYFvAIE2BLJ2qzBGSbrb4qsZMMfJP9/eHP8S4mQZ2+1Qp/sFoX35RiYzA HkdgOwz29iCkQAeMrmvVDYWraKQlEbIhijWnbLTMYghTv+7s9PA7sbl0esYUqgLYg5nrbhp5tTocC MkluoLqBfAzc4H5hViUIudDFe/lF5vGUx/dU2cLYx7jpBj8d8QnwTRzaMwN5nNPDKwz3V69GXE5aG zl6z181fqk4Jsg3atxLUAO9BbSDDhHAHpg0t5QmSPP39kziJBaZbtnr9s/ut+FwVdfRsInPqqIqLh 2U/MY4HQ==; Received: from [2001:4bb8:198:f3b2:86b6:2277:f429:37a1] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1k8I1A-0008Nq-7N; Wed, 19 Aug 2020 06:56:16 +0000 From: Christoph Hellwig To: Mauro Carvalho Chehab , Thomas Bogendoerfer , "James E.J. Bottomley" , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Ben Skeggs , Pawel Osciak , Marek Szyprowski , Matt Porter , iommu@lists.linux-foundation.org Cc: Tom Lendacky , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.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-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-mm@kvack.org, alsa-devel@alsa-project.org Subject: [PATCH 10/28] MIPS/jazzdma: decouple from dma-direct Date: Wed, 19 Aug 2020 08:55:37 +0200 Message-Id: <20200819065555.1802761-11-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200819065555.1802761-1-hch@lst.de> References: <20200819065555.1802761-1-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 X-Rspamd-Queue-Id: 9B23B180C07A3 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: The jazzdma ops implement support for a very basic IOMMU. Thus we really should not use the dma-direct code that takes physical address limits into account. This survived through the great MIPS DMA ops cleanup mostl= y because I was lazy, but now it is time to fully split the implementations= . Signed-off-by: Christoph Hellwig --- arch/mips/jazz/jazzdma.c | 32 +++++++++++++++++++++----------- 1 file changed, 21 insertions(+), 11 deletions(-) diff --git a/arch/mips/jazz/jazzdma.c b/arch/mips/jazz/jazzdma.c index fe40dbed04c1d6..d0b5a2ba2b1a8a 100644 --- a/arch/mips/jazz/jazzdma.c +++ b/arch/mips/jazz/jazzdma.c @@ -16,7 +16,6 @@ #include #include #include -#include #include #include #include @@ -492,26 +491,38 @@ int vdma_get_enable(int channel) static void *jazz_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs) { + struct page *page; void *ret; =20 - ret =3D dma_direct_alloc_pages(dev, size, dma_handle, gfp, attrs); - if (!ret) - return NULL; + if (attrs & DMA_ATTR_NO_WARN) + gfp |=3D __GFP_NOWARN; =20 - *dma_handle =3D vdma_alloc(virt_to_phys(ret), size); - if (*dma_handle =3D=3D DMA_MAPPING_ERROR) { - dma_direct_free_pages(dev, size, ret, *dma_handle, attrs); + size =3D PAGE_ALIGN(size); + page =3D alloc_pages(gfp, get_order(size)); + if (!page) return NULL; - } + ret =3D page_address(page); + *dma_handle =3D vdma_alloc(virt_to_phys(ret), size); + if (*dma_handle =3D=3D DMA_MAPPING_ERROR) + goto out_free_pages; + + if (attrs & DMA_ATTR_NON_CONSISTENT) + return ret; + arch_dma_prep_coherent(page, size); + return (void *)(UNCAC_BASE + __pa(ret)); =20 - return ret; +out_free_pages: + __free_pages(page, get_order(size)); + return NULL; } =20 static void jazz_dma_free(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle, unsigned long attrs) { vdma_free(dma_handle); - dma_direct_free_pages(dev, size, vaddr, dma_handle, attrs); + if (!(attrs & DMA_ATTR_NON_CONSISTENT)) + vaddr =3D __va(vaddr - UNCAC_BASE); + __free_pages(virt_to_page(vaddr), get_order(size)); } =20 static dma_addr_t jazz_dma_map_page(struct device *dev, struct page *pag= e, @@ -608,7 +619,6 @@ const struct dma_map_ops jazz_dma_ops =3D { .sync_single_for_device =3D jazz_dma_sync_single_for_device, .sync_sg_for_cpu =3D jazz_dma_sync_sg_for_cpu, .sync_sg_for_device =3D jazz_dma_sync_sg_for_device, - .dma_supported =3D dma_direct_supported, .cache_sync =3D arch_dma_cache_sync, .mmap =3D dma_common_mmap, .get_sgtable =3D dma_common_get_sgtable, --=20 2.28.0