From patchwork Thu Jun 8 13:26:00 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 9774949 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 12AC160393 for ; Thu, 8 Jun 2017 13:31:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 03F4228543 for ; Thu, 8 Jun 2017 13:31:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EBF4A28557; Thu, 8 Jun 2017 13:31:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 45C5128531 for ; Thu, 8 Jun 2017 13:31:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752386AbdFHNbo (ORCPT ); Thu, 8 Jun 2017 09:31:44 -0400 Received: from bombadil.infradead.org ([65.50.211.133]:56500 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752289AbdFHN2n (ORCPT ); Thu, 8 Jun 2017 09:28:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding: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=vSHdJ0fRN3QhYzmwkOg9MVJJCwgAKWOmRXXsBosPrLA=; b=cEedlU6MolR9mOFirC4RnLveh sEAnIHtLA4t0rTpfXCOfRi2HfhKMJb+djtfysR9tnxi8A70UJQ8S9gLIRQQ4cllwmUyVT7CSDLyJ+ ezDdKqaiQvcKFTavpaZtX/nVg64nTI8uqSpBsuudzivcqdgbaeXSmtnkN4ANbaaImzu6/7t97iBMU jZLdb7t4NdioU8a1sVCKN+wjXOFsRFQflfRVXObvANLwUOQ3NWxea7s66Q8qluDKSWjmpfT7qnmyI wRREmUTaq33HqYPDZbIQpjlMCGovv42ziUD7JFYVCHNNTmoRtO2XL5Z0T7Tap0KW+NN7qPCkjCjAZ Si+eT/Rew==; Received: from clnet-p099-196.ikbnet.co.at ([83.175.99.196] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.87 #1 (Red Hat Linux)) id 1dIxUE-0007kn-SE; Thu, 08 Jun 2017 13:28:31 +0000 From: Christoph Hellwig To: x86@kernel.org, linux-arm-kernel@lists.infradead.org, xen-devel@lists.xenproject.org, linux-c6x-dev@linux-c6x.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@linux-mips.org, openrisc@lists.librecores.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, dmaengine@vger.kernel.org, linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, iommu@lists.linux-foundation.org, netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH 35/44] x86: remove arch specific dma_supported implementation Date: Thu, 8 Jun 2017 15:26:00 +0200 Message-Id: <20170608132609.32662-36-hch@lst.de> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170608132609.32662-1-hch@lst.de> References: <20170608132609.32662-1-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP And instead wire it up as method for all the dma_map_ops instances. Note that this also means the arch specific check will be fully instead of partially applied in the AMD iommu driver. Signed-off-by: Christoph Hellwig --- arch/x86/include/asm/dma-mapping.h | 3 --- arch/x86/include/asm/iommu.h | 2 ++ arch/x86/kernel/amd_gart_64.c | 1 + arch/x86/kernel/pci-calgary_64.c | 1 + arch/x86/kernel/pci-dma.c | 7 +------ arch/x86/kernel/pci-nommu.c | 1 + arch/x86/pci/sta2x11-fixup.c | 3 ++- drivers/iommu/amd_iommu.c | 2 ++ drivers/iommu/intel-iommu.c | 3 +++ 9 files changed, 13 insertions(+), 10 deletions(-) diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h index c35d228aa381..398c79889f5c 100644 --- a/arch/x86/include/asm/dma-mapping.h +++ b/arch/x86/include/asm/dma-mapping.h @@ -33,9 +33,6 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp); #define arch_dma_alloc_attrs arch_dma_alloc_attrs -#define HAVE_ARCH_DMA_SUPPORTED 1 -extern int dma_supported(struct device *hwdev, u64 mask); - extern void *dma_generic_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr, gfp_t flag, unsigned long attrs); diff --git a/arch/x86/include/asm/iommu.h b/arch/x86/include/asm/iommu.h index 793869879464..fca144a104e4 100644 --- a/arch/x86/include/asm/iommu.h +++ b/arch/x86/include/asm/iommu.h @@ -6,6 +6,8 @@ extern int force_iommu, no_iommu; extern int iommu_detected; extern int iommu_pass_through; +int x86_dma_supported(struct device *dev, u64 mask); + /* 10 seconds */ #define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000) diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c index 815dd63f49d0..cc0e8bc0ea3f 100644 --- a/arch/x86/kernel/amd_gart_64.c +++ b/arch/x86/kernel/amd_gart_64.c @@ -704,6 +704,7 @@ static const struct dma_map_ops gart_dma_ops = { .alloc = gart_alloc_coherent, .free = gart_free_coherent, .mapping_error = gart_mapping_error, + .dma_supported = x86_dma_supported, }; 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 e75b490f2b0b..5286a4a92cf7 100644 --- a/arch/x86/kernel/pci-calgary_64.c +++ b/arch/x86/kernel/pci-calgary_64.c @@ -493,6 +493,7 @@ static const struct dma_map_ops calgary_dma_ops = { .map_page = calgary_map_page, .unmap_page = calgary_unmap_page, .mapping_error = calgary_mapping_error, + .dma_supported = x86_dma_supported, }; static inline void __iomem * busno_to_bbar(unsigned char num) diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 3a216ec869cd..b6f5684be3b5 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -213,10 +213,8 @@ static __init int iommu_setup(char *p) } early_param("iommu", iommu_setup); -int dma_supported(struct device *dev, u64 mask) +int x86_dma_supported(struct device *dev, u64 mask) { - const struct dma_map_ops *ops = get_dma_ops(dev); - #ifdef CONFIG_PCI if (mask > 0xffffffff && forbid_dac > 0) { dev_info(dev, "PCI: Disallowing DAC for device\n"); @@ -224,9 +222,6 @@ int dma_supported(struct device *dev, u64 mask) } #endif - if (ops->dma_supported) - return ops->dma_supported(dev, mask); - /* Copied from i386. Doesn't make much sense, because it will only work for pci_alloc_coherent. The caller just has to use GFP_DMA in this case. */ diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c index 085fe6ce4049..a6d404087fe3 100644 --- a/arch/x86/kernel/pci-nommu.c +++ b/arch/x86/kernel/pci-nommu.c @@ -104,4 +104,5 @@ const struct dma_map_ops nommu_dma_ops = { .sync_sg_for_device = nommu_sync_sg_for_device, .is_phys = 1, .mapping_error = nommu_mapping_error, + .dma_supported = x86_dma_supported, }; diff --git a/arch/x86/pci/sta2x11-fixup.c b/arch/x86/pci/sta2x11-fixup.c index ec008e800b45..53d600217973 100644 --- a/arch/x86/pci/sta2x11-fixup.c +++ b/arch/x86/pci/sta2x11-fixup.c @@ -26,6 +26,7 @@ #include #include #include +#include #define STA2X11_SWIOTLB_SIZE (4*1024*1024) extern int swiotlb_late_init_with_default_size(size_t default_size); @@ -191,7 +192,7 @@ static const struct dma_map_ops sta2x11_dma_ops = { .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu, .sync_sg_for_device = swiotlb_sync_sg_for_device, .mapping_error = swiotlb_dma_mapping_error, - .dma_supported = NULL, /* FIXME: we should use this instead! */ + .dma_supported = x86_dma_supported, }; /* At setup time, we use our own ops if the device is a ConneXt one */ diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index d41280e869de..521fdf2d41bc 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2731,6 +2731,8 @@ static void free_coherent(struct device *dev, size_t size, */ static int amd_iommu_dma_supported(struct device *dev, u64 mask) { + if (!x86_dma_supported(dev, mask)) + return 0; return check_device(dev); } diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index fc2765ccdb57..53cc0a393f04 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -3981,6 +3981,9 @@ struct dma_map_ops intel_dma_ops = { .map_page = intel_map_page, .unmap_page = intel_unmap_page, .mapping_error = intel_mapping_error, +#ifdef CONFIG_X86 + .dma_supported = x86_dma_supported, +#endif }; static inline int iommu_domain_cache_init(void)