From: robin.murphy@arm.com (Robin Murphy) Date: Thu, 16 Jul 2015 19:40:11 +0100 Subject: [PATCH v4 0/4] arm64: IOMMU-backed DMA mapping Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi all, Here's a quick repost to address feedback on v3, and a couple of other tweaks. Changes this round: - Fix the heinous dma_mask/coherency confusion, which also simplifies some prototypes and parameter passing as a bonus. - Reorder the iommu_map/unmap in alloc/free to prevent any potential access the wrong side of clearing/freeing the pages. - Made the unconditional clearing of allocations a bit more explicit. - Made the default domain workaround more robust against the possibility of an IOMMU driver giving back the same domain for multiple devices. Robin. v3: http://thread.gmane.org/gmane.linux.kernel.iommu/10133 Updated branch at: git://linux-arm.org/linux-rm iommu/dma Robin Murphy (4): iommu/iova: Avoid over-allocating when size-aligned iommu: Implement common IOMMU ops for DMA mapping arm64: Add IOMMU dma_ops arm64: Hook up IOMMU dma_ops arch/arm64/Kconfig | 1 + arch/arm64/include/asm/dma-mapping.h | 15 +- arch/arm64/mm/dma-mapping.c | 452 +++++++++++++++++++++++++++++ drivers/iommu/Kconfig | 7 + drivers/iommu/Makefile | 1 + drivers/iommu/dma-iommu.c | 538 +++++++++++++++++++++++++++++++++++ drivers/iommu/intel-iommu.c | 2 + drivers/iommu/iova.c | 23 +- include/linux/dma-iommu.h | 84 ++++++ include/linux/iommu.h | 1 + 10 files changed, 1099 insertions(+), 25 deletions(-) create mode 100644 drivers/iommu/dma-iommu.c create mode 100644 include/linux/dma-iommu.h -- 1.9.1