[PATCH kernel v2 0/2] powerpc/ioda2: Another attempt to allow DMA masks between 32 and 59

[Alexey Kardashevskiy]

This is an attempt to allow DMA masks between 32..59 which are not large
enough to use either a PHB3 bypass mode or a sketchy bypass. Depending
on the max order, up to 40 is usually available.


This is based on sha1
37624b58542f Linus Torvalds "Linux 5.1-rc7".

Please comment. Thanks.



Alexey Kardashevskiy (2):
  powerpc/powernv/ioda2: Allocate TCE table levels on demand for default
    DMA window
  powerpc/powernv/ioda2: Create bigger default window with 64k IOMMU
    pages

 arch/powerpc/include/asm/iommu.h              |  8 ++-
 arch/powerpc/platforms/powernv/pci.h          |  2 +-
 arch/powerpc/kernel/iommu.c                   | 58 +++++++++++++------
 arch/powerpc/platforms/powernv/pci-ioda-tce.c | 20 +++----
 arch/powerpc/platforms/powernv/pci-ioda.c     | 40 +++++++++++--
 5 files changed, 90 insertions(+), 38 deletions(-)

-- 
2.17.1