From patchwork Wed May 27 14:09:18 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robin Murphy X-Patchwork-Id: 6489971 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id A9F63C0433 for ; Wed, 27 May 2015 14:12:12 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BDC82206A2 for ; Wed, 27 May 2015 14:12:11 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D670B20459 for ; Wed, 27 May 2015 14:12:10 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Yxc25-0001iT-BO; Wed, 27 May 2015 14:10:09 +0000 Received: from eu-smtp-delivery-143.mimecast.com ([146.101.78.143]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Yxc1n-0001Ty-JB for linux-arm-kernel@lists.infradead.org; Wed, 27 May 2015 14:09:57 +0000 Received: from cam-owa1.Emea.Arm.com (fw-tnat.cambridge.arm.com [217.140.96.140]) by uk-mta-19.uk.mimecast.lan; Wed, 27 May 2015 15:09:29 +0100 Received: from e104324-lin.cambridge.arm.com ([10.1.2.79]) by cam-owa1.Emea.Arm.com with Microsoft SMTPSVC(6.0.3790.3959); Wed, 27 May 2015 15:09:26 +0100 From: Robin Murphy To: iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, joro@8bytes.org, will.deacon@arm.com, catalin.marinas@arm.com Subject: [PATCH 4/4] arm64: Hook up IOMMU dma_ops Date: Wed, 27 May 2015 15:09:18 +0100 Message-Id: X-Mailer: git-send-email 1.9.1 In-Reply-To: References: X-OriginalArrivalTime: 27 May 2015 14:09:26.0267 (UTC) FILETIME=[BD4C2CB0:01D09886] X-MC-Unique: e7S8wtQoQYahJJT7NVJuqA-3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150527_070951_940266_DE2CC1DA X-CRM114-Status: UNSURE ( 8.62 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) Cc: laurent.pinchart+renesas@ideasonboard.com, arnd@arndb.de, djkurtz@google.com, thunder.leizhen@huawei.com, yingjoe.chen@mediatek.com, treding@nvidia.com, yong.wu@mediatek.com, m.szyprowski@samsung.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP With iommu_dma_ops in place, hook them up to the configuration code, so IOMMU-fronted devices will get them automatically. Signed-off-by: Robin Murphy --- arch/arm64/Kconfig | 1 + arch/arm64/include/asm/dma-mapping.h | 11 ++++++----- arch/arm64/mm/dma-mapping.c | 15 +++++++++++++++ 3 files changed, 22 insertions(+), 5 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 7796af4..257cd7e 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -70,6 +70,7 @@ config ARM64 select HAVE_PERF_USER_STACK_DUMP select HAVE_RCU_TABLE_FREE select HAVE_SYSCALL_TRACEPOINTS + select IOMMU_DMA if IOMMU_SUPPORT select IRQ_DOMAIN select MODULES_USE_ELF_RELA select NO_BOOTMEM diff --git a/arch/arm64/include/asm/dma-mapping.h b/arch/arm64/include/asm/dma-mapping.h index 835a8d1..a87b507 100644 --- a/arch/arm64/include/asm/dma-mapping.h +++ b/arch/arm64/include/asm/dma-mapping.h @@ -45,11 +45,8 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev) return __generic_dma_ops(dev); } -static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, - struct iommu_ops *iommu, bool coherent) -{ - dev->archdata.dma_coherent = coherent; -} +void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, + struct iommu_ops *iommu, bool coherent); #define arch_setup_dma_ops arch_setup_dma_ops /* do not use this function in a driver */ @@ -64,6 +61,10 @@ static inline bool is_device_dma_coherent(struct device *dev) #include #ifdef CONFIG_IOMMU_DMA + +void arch_teardown_dma_ops(struct device *dev); +#define arch_teardown_dma_ops arch_teardown_dma_ops + static inline struct iommu_dma_domain *arch_get_dma_domain(struct device *dev) { return dev->archdata.dma_domain; diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index 189477b..f9d4184 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -769,6 +769,14 @@ static void __iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, mutex_unlock(&iommu_dma_notifier_lock); } +void arch_teardown_dma_ops(struct device *dev) +{ + if (dev->archdata.dma_domain) { + iommu_dma_detach_device(dev); + dev->archdata.dma_ops = NULL; + } +} + #else static void __iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, @@ -776,3 +784,10 @@ static void __iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, { } #endif /* CONFIG_IOMMU_DMA */ + +void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, + struct iommu_ops *iommu, bool coherent) +{ + dev->archdata.dma_coherent = coherent; + __iommu_setup_dma_ops(dev, dma_base, size, iommu); +}