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From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: linuxppc-dev@lists.ozlabs.org
Subject: [PATCH kernel v3 0/3] powerpc/ioda2: Yet another attempt to allow DMA
 masks between 32 and 59
Date: Thu, 30 May 2019 17:03:52 +1000
Message-Id: <20190530070355.121802-1-aik@ozlabs.ru>
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Cc: Alexey Kardashevskiy <aik@ozlabs.ru>,
 Alistair Popple <alistair@popple.id.au>, Oliver O'Halloran <oohall@gmail.com>,
 Sam Bobroff <sbobroff@linux.ibm.com>,
 David Gibson <david@gibson.dropbear.id.au>
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 <linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org>

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 v5.2-rc2.

Please comment. Thanks.



Alexey Kardashevskiy (3):
  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                   | 58 +++++++++++++------
 arch/powerpc/platforms/powernv/pci-ioda-tce.c | 20 +++----
 arch/powerpc/platforms/powernv/pci-ioda.c     | 40 +++++++++++--
 6 files changed, 95 insertions(+), 44 deletions(-)

-- 
2.17.1