From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: linuxppc-dev@lists.ozlabs.org
Cc: Sam Bobroff <sbobroff@linux.ibm.com>,
Alistair Popple <alistair@popple.id.au>,
Oliver O'Halloran <oohall@gmail.com>,
Alexey Kardashevskiy <aik@ozlabs.ru>,
David Gibson <david@gibson.dropbear.id.au>
Subject: [PATCH kernel v5 0/4] powerpc/ioda2: Yet another attempt to allow DMA masks between 32 and 59
Date: Thu, 18 Jul 2019 15:11:35 +1000 [thread overview]
Message-ID: <20190718051139.74787-1-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 an optimization and not a bug fix for DMA API usage.
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 | 7 +-
arch/powerpc/platforms/powernv/pci.h | 2 +-
arch/powerpc/kernel/dma-iommu.c | 11 ++-
arch/powerpc/kernel/iommu.c | 74 +++++++++++++------
arch/powerpc/platforms/cell/iommu.c | 2 +-
arch/powerpc/platforms/pasemi/iommu.c | 2 +-
arch/powerpc/platforms/powernv/pci-ioda-tce.c | 38 ++++++----
arch/powerpc/platforms/powernv/pci-ioda.c | 42 +++++++++--
arch/powerpc/platforms/pseries/iommu.c | 8 +-
arch/powerpc/platforms/pseries/vio.c | 2 +-
arch/powerpc/sysdev/dart_iommu.c | 2 +-
11 files changed, 129 insertions(+), 61 deletions(-)
--
2.17.1
next reply other threads:[~2019-07-18 5:16 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-18 5:11 Alexey Kardashevskiy [this message]
2019-07-18 5:11 ` [PATCH kernel v5 1/4] powerpc/powernv/ioda: Fix race in TCE level allocation Alexey Kardashevskiy
2019-07-18 5:11 ` Alexey Kardashevskiy
2019-08-22 13:08 ` Michael Ellerman
2019-07-18 5:11 ` [PATCH kernel v5 2/4] powerpc/iommu: Allow bypass-only for DMA Alexey Kardashevskiy
2019-07-18 5:11 ` [PATCH kernel v5 3/4] powerpc/powernv/ioda2: Allocate TCE table levels on demand for default DMA window Alexey Kardashevskiy
2019-07-18 5:11 ` [PATCH kernel v5 4/4] powerpc/powernv/ioda2: Create bigger default window with 64k IOMMU pages Alexey Kardashevskiy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190718051139.74787-1-aik@ozlabs.ru \
--to=aik@ozlabs.ru \
--cc=alistair@popple.id.au \
--cc=david@gibson.dropbear.id.au \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=oohall@gmail.com \
--cc=sbobroff@linux.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.