From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: linux-kernel@vger.kernel.org
Cc: "Oliver O'Halloran" <oohall@gmail.com>,
David Gibson <david@gibson.dropbear.id.au>,
Sam Bobroff <sbobroff@linux.ibm.com>,
Alistair Popple <alistair@popple.id.au>,
Alexey Kardashevskiy <aik@ozlabs.ru>
Subject: [PATCH kernel v4 0/4] powerpc/ioda2: Yet another attempt to allow DMA masks between 32 and 59
Date: Fri, 12 Jul 2019 19:29:51 +1000 [thread overview]
Message-ID: <20190712092955.56218-1-aik@ozlabs.ru> (raw)
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
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
next reply other threads:[~2019-07-12 9:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-12 9:29 Alexey Kardashevskiy [this message]
2019-07-12 9:29 ` [PATCH kernel v4 1/4] powerpc/powernv/ioda: Fix race in TCE level allocation Alexey Kardashevskiy
2019-07-12 9:29 ` [PATCH kernel v4 2/4] powerpc/iommu: Allow bypass-only for DMA Alexey Kardashevskiy
2019-07-12 9:29 ` [PATCH kernel v4 3/4] powerpc/powernv/ioda2: Allocate TCE table levels on demand for default DMA window Alexey Kardashevskiy
2019-07-12 9:29 ` [PATCH kernel v4 4/4] powerpc/powernv/ioda2: Create bigger default window with 64k IOMMU pages Alexey Kardashevskiy
2019-07-12 9:41 ` [PATCH kernel v4 0/4] powerpc/ioda2: Yet another attempt to allow DMA masks between 32 and 59 Alexey Kardashevskiy
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