From: Will Davis <wdavis@xxxxxxxxxx> Hi, This patch series adds DMA APIs to map and unmap a struct resource to and from a PCI device's IOVA domain, and implements the AMD, Intel, and nommu versions of these interfaces. This solves a long-standing problem with the existing DMA-remapping interfaces, which require that a struct page be given for the region to be mapped into a device's IOVA domain. This requirement cannot support peer device BAR ranges, for which no struct pages exist. The underlying implementations of map_page and map_sg convert the struct page into its physical address anyway, so we just need a way to route the physical address of the BAR region to these implementations. The new interfaces do this by taking the struct resource describing a device's BAR region, from which the physical address is derived. The Intel and nommu versions have been verified on a dual Intel Xeon E5405 workstation. I'm in the process of obtaining hardware to test the AMD version as well. Please review. Thanks, Will Will Davis (6): dma-debug: add checking for map/unmap_resource DMA-API: Introduce dma_(un)map_resource dma-mapping: pci: add pci_(un)map_resource iommu/amd: Implement (un)map_resource iommu/vt-d: implement (un)map_resource x86: add pci-nommu implementation of map_resource arch/x86/kernel/pci-nommu.c | 17 +++++++ drivers/iommu/amd_iommu.c | 76 ++++++++++++++++++++++++++------ drivers/iommu/intel-iommu.c | 18 ++++++++ include/asm-generic/dma-mapping-broken.h | 9 ++++ include/asm-generic/dma-mapping-common.h | 34 ++++++++++++++ include/asm-generic/pci-dma-compat.h | 14 ++++++ include/linux/dma-debug.h | 20 +++++++++ include/linux/dma-mapping.h | 7 +++ lib/dma-debug.c | 48 ++++++++++++++++++++ 9 files changed, 230 insertions(+), 13 deletions(-) -- 2.3.7 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
