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=-9.5 required=3.0 tests=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 2BA98C41517 for ; Thu, 25 Jul 2019 06:34:23 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0494122C7D for ; Thu, 25 Jul 2019 06:34:22 +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="cyR1V4LD" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0494122C7D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 8D3BA1646; Thu, 25 Jul 2019 06:34:17 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 500641574 for ; Thu, 25 Jul 2019 06:34:16 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 8AAAFB0 for ; Thu, 25 Jul 2019 06:34:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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:Resent-Date:Resent-From :Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=ExZhdM1UHu57MIHolwY1h/5Id6++hihVRHXGruO7a6Q=; b=cyR1V4LDu0wHTwAVK8KD9woC4/ /GPziovh/5dK+4R2fPtwdg2QBSldSGvsP7t049Bqbtjf+nMYCf4K7RONxDp1c2Fjbf0Ab59qZYrFo Dx11XGm7NjzsB9rwXYvUZnKDy5OdVUY3whG4E0KkmUcgceTeCcdfLdq10TThkIhWXs8YvfOw2ZnCH Gg6OP9pyqFpjM7GA7TZ5QY4IPhwI+XtO3R5i/z/U1/VR3oxbz87ak3DYBzyGm5lBPn2vIVRvrhyj9 EDkwxj4z0gdP24gL8DSeP92ar95dgguHLSFGvznVTAUXJvapE0SIJ5dZKZ6pX1YC7b3h6998vVDUo TTHv2A3g==; Received: from p57b3f613.dip0.t-ipconnect.de ([87.179.246.19] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hqXKO-0000IS-N7; Thu, 25 Jul 2019 06:34:13 +0000 From: Christoph Hellwig To: iommu@lists.linux-foundation.org, Marek Szyprowski Subject: [PATCH 3/5] dma-mapping: explicitly wire up ->mmap and ->get_sgtable Date: Thu, 25 Jul 2019 08:33:59 +0200 Message-Id: <20190725063401.29904-4-hch@lst.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190725063401.29904-1-hch@lst.de> References: <20190725063401.29904-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Cc: linux-xtensa@linux-xtensa.org, Michal Simek , linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, Takashi Iwai , linuxppc-dev@lists.ozlabs.org, x86@kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, Robin Murphy , linux-arm-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org While the default ->mmap and ->get_sgtable implementations work for the majority of our dma_map_ops impementations they are inherently safe for others that don't use the page allocator or CMA and/or use their own way of remapping not covered by the common code. So remove the defaults if these methods are not wired up, but instead wire up the default implementations for all safe instances. Fixes: e1c7e324539a ("dma-mapping: always provide the dma_map_ops based implementation") Signed-off-by: Christoph Hellwig --- arch/alpha/kernel/pci_iommu.c | 2 ++ arch/ia64/hp/common/sba_iommu.c | 2 ++ arch/ia64/sn/pci/pci_dma.c | 2 ++ arch/mips/jazz/jazzdma.c | 2 ++ arch/powerpc/kernel/dma-iommu.c | 2 ++ arch/powerpc/platforms/ps3/system-bus.c | 4 ++++ arch/powerpc/platforms/pseries/vio.c | 2 ++ arch/s390/pci/pci_dma.c | 2 ++ arch/sparc/kernel/iommu.c | 2 ++ arch/sparc/kernel/pci_sun4v.c | 2 ++ arch/x86/kernel/amd_gart_64.c | 2 ++ arch/x86/kernel/pci-calgary_64.c | 2 ++ drivers/iommu/amd_iommu.c | 2 ++ drivers/iommu/intel-iommu.c | 2 ++ kernel/dma/mapping.c | 20 ++++++++++++-------- 15 files changed, 42 insertions(+), 8 deletions(-) diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c index 242108439f42..7f1925a32c99 100644 --- a/arch/alpha/kernel/pci_iommu.c +++ b/arch/alpha/kernel/pci_iommu.c @@ -955,5 +955,7 @@ const struct dma_map_ops alpha_pci_ops = { .map_sg = alpha_pci_map_sg, .unmap_sg = alpha_pci_unmap_sg, .dma_supported = alpha_pci_supported, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; EXPORT_SYMBOL(alpha_pci_ops); diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c index 3d24cc43385b..4c0ea6c2833d 100644 --- a/arch/ia64/hp/common/sba_iommu.c +++ b/arch/ia64/hp/common/sba_iommu.c @@ -2183,6 +2183,8 @@ const struct dma_map_ops sba_dma_ops = { .map_sg = sba_map_sg_attrs, .unmap_sg = sba_unmap_sg_attrs, .dma_supported = sba_dma_supported, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; void sba_dma_init(void) diff --git a/arch/ia64/sn/pci/pci_dma.c b/arch/ia64/sn/pci/pci_dma.c index b7d42e4edc1f..12ffb9c0d738 100644 --- a/arch/ia64/sn/pci/pci_dma.c +++ b/arch/ia64/sn/pci/pci_dma.c @@ -438,6 +438,8 @@ static struct dma_map_ops sn_dma_ops = { .unmap_sg = sn_dma_unmap_sg, .dma_supported = sn_dma_supported, .get_required_mask = sn_dma_get_required_mask, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; void sn_dma_init(void) diff --git a/arch/mips/jazz/jazzdma.c b/arch/mips/jazz/jazzdma.c index 1804dc9d8136..a01e14955187 100644 --- a/arch/mips/jazz/jazzdma.c +++ b/arch/mips/jazz/jazzdma.c @@ -682,5 +682,7 @@ const struct dma_map_ops jazz_dma_ops = { .sync_sg_for_device = jazz_dma_sync_sg_for_device, .dma_supported = dma_direct_supported, .cache_sync = arch_dma_cache_sync, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; EXPORT_SYMBOL(jazz_dma_ops); diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c index a0879674a9c8..2f5a53874f6d 100644 --- a/arch/powerpc/kernel/dma-iommu.c +++ b/arch/powerpc/kernel/dma-iommu.c @@ -208,4 +208,6 @@ const struct dma_map_ops dma_iommu_ops = { .sync_single_for_device = dma_iommu_sync_for_device, .sync_sg_for_cpu = dma_iommu_sync_sg_for_cpu, .sync_sg_for_device = dma_iommu_sync_sg_for_device, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c index 98410119c47b..70fcc9736a8c 100644 --- a/arch/powerpc/platforms/ps3/system-bus.c +++ b/arch/powerpc/platforms/ps3/system-bus.c @@ -700,6 +700,8 @@ static const struct dma_map_ops ps3_sb_dma_ops = { .get_required_mask = ps3_dma_get_required_mask, .map_page = ps3_sb_map_page, .unmap_page = ps3_unmap_page, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; static const struct dma_map_ops ps3_ioc0_dma_ops = { @@ -711,6 +713,8 @@ static const struct dma_map_ops ps3_ioc0_dma_ops = { .get_required_mask = ps3_dma_get_required_mask, .map_page = ps3_ioc0_map_page, .unmap_page = ps3_unmap_page, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; /** diff --git a/arch/powerpc/platforms/pseries/vio.c b/arch/powerpc/platforms/pseries/vio.c index 6601b9d404dc..3473eef7628c 100644 --- a/arch/powerpc/platforms/pseries/vio.c +++ b/arch/powerpc/platforms/pseries/vio.c @@ -605,6 +605,8 @@ static const struct dma_map_ops vio_dma_mapping_ops = { .unmap_page = vio_dma_iommu_unmap_page, .dma_supported = dma_iommu_dma_supported, .get_required_mask = dma_iommu_get_required_mask, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; /** diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c index 9e52d1527f71..03d8c1c9f82f 100644 --- a/arch/s390/pci/pci_dma.c +++ b/arch/s390/pci/pci_dma.c @@ -668,6 +668,8 @@ const struct dma_map_ops s390_pci_dma_ops = { .unmap_sg = s390_dma_unmap_sg, .map_page = s390_dma_map_pages, .unmap_page = s390_dma_unmap_pages, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, /* dma_supported is unconditionally true without a callback */ }; EXPORT_SYMBOL_GPL(s390_pci_dma_ops); diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c index 4ae7388b1bff..c915a7cbcc91 100644 --- a/arch/sparc/kernel/iommu.c +++ b/arch/sparc/kernel/iommu.c @@ -763,6 +763,8 @@ static const struct dma_map_ops sun4u_dma_ops = { .sync_single_for_cpu = dma_4u_sync_single_for_cpu, .sync_sg_for_cpu = dma_4u_sync_sg_for_cpu, .dma_supported = dma_4u_supported, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; const struct dma_map_ops *dma_ops = &sun4u_dma_ops; diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c index 14b93c5564e3..ab6909642ae1 100644 --- a/arch/sparc/kernel/pci_sun4v.c +++ b/arch/sparc/kernel/pci_sun4v.c @@ -692,6 +692,8 @@ static const struct dma_map_ops sun4v_dma_ops = { .map_sg = dma_4v_map_sg, .unmap_sg = dma_4v_unmap_sg, .dma_supported = dma_4v_supported, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; static void pci_sun4v_scan_bus(struct pci_pbm_info *pbm, struct device *parent) diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c index a585ea6f686a..a65b4a9c7f87 100644 --- a/arch/x86/kernel/amd_gart_64.c +++ b/arch/x86/kernel/amd_gart_64.c @@ -678,6 +678,8 @@ static const struct dma_map_ops gart_dma_ops = { .alloc = gart_alloc_coherent, .free = gart_free_coherent, .dma_supported = dma_direct_supported, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; static void gart_iommu_shutdown(void) diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c index 9d4343aa481b..23fdec030c37 100644 --- a/arch/x86/kernel/pci-calgary_64.c +++ b/arch/x86/kernel/pci-calgary_64.c @@ -468,6 +468,8 @@ static const struct dma_map_ops calgary_dma_ops = { .map_page = calgary_map_page, .unmap_page = calgary_unmap_page, .dma_supported = dma_direct_supported, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; static inline void __iomem * busno_to_bbar(unsigned char num) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index b607a92791d3..2e74ad659985 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2722,6 +2722,8 @@ static const struct dma_map_ops amd_iommu_dma_ops = { .map_sg = map_sg, .unmap_sg = unmap_sg, .dma_supported = amd_iommu_dma_supported, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; static int init_reserved_iova_ranges(void) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index ac4172c02244..f6776b359977 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -3737,6 +3737,8 @@ static const struct dma_map_ops intel_dma_ops = { .map_resource = intel_map_resource, .unmap_resource = intel_unmap_resource, .dma_supported = dma_direct_supported, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, }; static inline int iommu_domain_cache_init(void) diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c index 4ceb5b9016d8..cdb157cd70e7 100644 --- a/kernel/dma/mapping.c +++ b/kernel/dma/mapping.c @@ -153,11 +153,12 @@ int dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt, { const struct dma_map_ops *ops = get_dma_ops(dev); - if (!dma_is_direct(ops) && ops->get_sgtable) - return ops->get_sgtable(dev, sgt, cpu_addr, dma_addr, size, - attrs); - return dma_common_get_sgtable(dev, sgt, cpu_addr, dma_addr, size, - attrs); + if (dma_is_direct(ops)) + return dma_common_get_sgtable(dev, sgt, cpu_addr, dma_addr, + size, attrs); + if (!ops->get_sgtable) + return -ENXIO; + return ops->get_sgtable(dev, sgt, cpu_addr, dma_addr, size, attrs); } EXPORT_SYMBOL(dma_get_sgtable_attrs); @@ -221,9 +222,12 @@ int dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma, { const struct dma_map_ops *ops = get_dma_ops(dev); - if (!dma_is_direct(ops) && ops->mmap) - return ops->mmap(dev, vma, cpu_addr, dma_addr, size, attrs); - return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size, attrs); + if (dma_is_direct(ops)) + return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size, + attrs); + if (!ops->mmap) + return -ENXIO; + return ops->mmap(dev, vma, cpu_addr, dma_addr, size, attrs); } EXPORT_SYMBOL(dma_mmap_attrs); -- 2.20.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu