[PATCH kernel v4 0/4 repost] powerpc/ioda2: Yet 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.

Changelogs are in the patches.


This is based on sha1
a2b6f26c264e Christophe Leroy "powerpc/module64: Use symbolic instructions names.".

Please comment. Thanks.



Alexey Kardashevskiy (4):
  powerpc/powernv/ioda: Fix race in TCE level allocation
  powerpc/iommu: Allow bypass-only for DMA
  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/dma-iommu.c               | 11 ++-
 arch/powerpc/kernel/iommu.c                   | 74 +++++++++++++------
 arch/powerpc/platforms/powernv/pci-ioda-tce.c | 38 ++++++----
 arch/powerpc/platforms/powernv/pci-ioda.c     | 40 ++++++++--
 6 files changed, 121 insertions(+), 52 deletions(-)

-- 
2.17.1