[PATCH v4 0/2] iommu/arm-smmu: hard iova_to_phys

[Mitchel Humpherys]

This series introduces support for performing iova-to-phys translations via
the ARM SMMU hardware on supported implementations. We also make use of
some new generic macros for polling hardware registers.

v1..v2:

  - Renamed one of the iopoll macros to use the more standard `_atomic'
    suffix
  - Removed some convenience iopoll wrappers to encourage explicitness

v2..v3:

  - Removed unnecessary `dev_name's

v3..v4:

  - Updated the iopoll commit message to reflect the patch better
  - Added locking around address translation op
  - Return 0 on iova_to_phys failure


Matt Wagantall (1):
  iopoll: Introduce memory-mapped IO polling macros

Mitchel Humpherys (1):
  iommu/arm-smmu: add support for iova_to_phys through ATS1PR

 drivers/iommu/arm-smmu.c | 79 +++++++++++++++++++++++++++++++++++++++++++++++-
 include/linux/iopoll.h   | 77 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 155 insertions(+), 1 deletion(-)
 create mode 100644 include/linux/iopoll.h

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