[RFC,0/7] Convert the Intel iommu driver to the dma-ops api

Message

Tom Murphy May 4, 2019, 1:23 p.m. UTC

Convert the intel iommu driver to the dma-ops api so that we can remove a bunch of repeated code.

This patchset depends on the "iommu/vt-d: Delegate DMA domain to generic iommu" and
"iommu/amd: Convert the AMD iommu driver to the dma-iommu api" patch sets which haven't
yet merged so this is just a RFC to get some feedback before I do more testing.

Tom Murphy (7):
  iommu/vt-d: Set the dma_ops per device so we can remove the
    iommu_no_mapping code
  iommu/vt-d: Remove iova handling code from non-dma ops path
  iommu: improve iommu iotlb flushing
  iommu/dma-iommu: Handle freelists in the dma-iommu api path
  iommu/dma-iommu: add wrapper for iommu_dma_free_cpu_cached_iovas
  iommu/vt-d: convert the intel iommu driver to the dma-iommu ops api
  iommu/vt-d: Always set DMA_PTE_READ if the iommu doens't support zero
    length reads

 drivers/iommu/Kconfig           |   1 +
 drivers/iommu/amd_iommu.c       |  14 +-
 drivers/iommu/arm-smmu-v3.c     |   3 +-
 drivers/iommu/arm-smmu.c        |   2 +-
 drivers/iommu/dma-iommu.c       |  48 ++-
 drivers/iommu/exynos-iommu.c    |   3 +-
 drivers/iommu/intel-iommu.c     | 605 +++++---------------------------
 drivers/iommu/iommu.c           |  21 +-
 drivers/iommu/ipmmu-vmsa.c      |   2 +-
 drivers/iommu/msm_iommu.c       |   2 +-
 drivers/iommu/mtk_iommu.c       |   3 +-
 drivers/iommu/mtk_iommu_v1.c    |   3 +-
 drivers/iommu/omap-iommu.c      |   2 +-
 drivers/iommu/qcom_iommu.c      |   2 +-
 drivers/iommu/rockchip-iommu.c  |   2 +-
 drivers/iommu/s390-iommu.c      |   3 +-
 drivers/iommu/tegra-gart.c      |   2 +-
 drivers/iommu/tegra-smmu.c      |   2 +-
 drivers/vfio/vfio_iommu_type1.c |   3 +-
 include/linux/dma-iommu.h       |   3 +
 include/linux/intel-iommu.h     |   1 -
 include/linux/iommu.h           |  24 +-
 22 files changed, 175 insertions(+), 576 deletions(-)