iommu.lists.linux-foundation.org archive mirror
 help / color / mirror / Atom feed
From: Jordan Crouse <jcrouse@codeaurora.org>
To: linux-arm-msm@vger.kernel.org
Cc: Sean Paul <sean@poorly.run>, Joerg Roedel <jroedel@suse.de>,
	Jonathan Marek <jonathan@marek.ca>,
	David Airlie <airlied@linux.ie>,
	Robin Murphy <robin.murphy@arm.com>,
	Will Deacon <will@kernel.org>,
	Akhil P Oommen <akhilpo@codeaurora.org>,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	Eric Anholt <eric@anholt.net>,
	iommu@lists.linux-foundation.org,
	John Stultz <john.stultz@linaro.org>,
	linux-arm-kernel@lists.infradead.org,
	Daniel Vetter <daniel@ffwll.ch>,
	freedreno@lists.freedesktop.org,
	Sharat Masetty <smasetty@codeaurora.org>,
	Emil Velikov <emil.velikov@collabora.com>
Subject: [PATCH v2 0/6] iommu-arm-smmu: Add auxiliary domains and per-instance pagetables
Date: Fri, 26 Jun 2020 14:04:08 -0600	[thread overview]
Message-ID: <20200626200414.14382-1-jcrouse@codeaurora.org> (raw)


This is a new refresh of support for auxiliary domains for arm-smmu-v2
and per-instance pagetables for drm/msm. The big change here from past
efforts is that outside of creating a single aux-domain to enable TTBR0
all of the per-instance pagetables are created and managed exclusively
in drm/msm without involving the arm-smmu driver. This fits in with the
suggested model of letting the GPU hardware do what it needs and leave the
arm-smmu driver blissfully unaware.

Almost. In order to set up the io-pgtable properly in drm/msm we need to
query the pagetable configuration from the current active domain and we need to
rely on the iommu API to flush TLBs after a unmap. In the future we can optimize
this in the drm/msm driver to track the state of the TLBs but for now the big
hammer lets us get off the ground.

This series is built on the split pagetable support [1].

[1] https://patchwork.kernel.org/patch/11628543/

v2: Remove unneeded cruft in the a6xx page switch sequence

Jordan Crouse (6):
  iommu/arm-smmu: Add auxiliary domain support for arm-smmuv2
  iommu/io-pgtable: Allow a pgtable implementation to skip TLB
    operations
  iommu/arm-smmu: Add a domain attribute to pass the pagetable config
  drm/msm: Add support to create a local pagetable
  drm/msm: Add support for address space instances
  drm/msm/a6xx: Add support for per-instance pagetables

 drivers/gpu/drm/msm/adreno/a6xx_gpu.c |  43 +++++
 drivers/gpu/drm/msm/msm_drv.c         |  15 +-
 drivers/gpu/drm/msm/msm_drv.h         |   4 +
 drivers/gpu/drm/msm/msm_gem_vma.c     |   9 +
 drivers/gpu/drm/msm/msm_gpu.c         |  17 ++
 drivers/gpu/drm/msm/msm_gpu.h         |   5 +
 drivers/gpu/drm/msm/msm_gpummu.c      |   2 +-
 drivers/gpu/drm/msm/msm_iommu.c       | 180 +++++++++++++++++++-
 drivers/gpu/drm/msm/msm_mmu.h         |  16 +-
 drivers/gpu/drm/msm/msm_ringbuffer.h  |   1 +
 drivers/iommu/arm-smmu.c              | 231 ++++++++++++++++++++++++--
 drivers/iommu/arm-smmu.h              |   1 +
 include/linux/io-pgtable.h            |  11 +-
 include/linux/iommu.h                 |   1 +
 14 files changed, 507 insertions(+), 29 deletions(-)

-- 
2.17.1

_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

             reply	other threads:[~2020-06-26 20:04 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-26 20:04 Jordan Crouse [this message]
2020-06-26 20:04 ` [PATCH v2 1/6] iommu/arm-smmu: Add auxiliary domain support for arm-smmuv2 Jordan Crouse
2020-07-07 10:48   ` Jean-Philippe Brucker
2020-07-07 12:34   ` Robin Murphy
2020-07-07 15:09     ` [Freedreno] " Rob Clark
2020-07-13 17:35       ` Jordan Crouse
2020-06-26 20:04 ` [PATCH v2 2/6] iommu/io-pgtable: Allow a pgtable implementation to skip TLB operations Jordan Crouse
2020-07-07 11:34   ` Robin Murphy
2020-07-07 14:25     ` [Freedreno] " Rob Clark
2020-07-07 14:58       ` Rob Clark
2020-07-08 19:19         ` Jordan Crouse
2020-06-26 20:04 ` [PATCH v2 3/6] iommu/arm-smmu: Add a domain attribute to pass the pagetable config Jordan Crouse
2020-06-26 20:04 ` [PATCH v2 4/6] drm/msm: Add support to create a local pagetable Jordan Crouse
2020-07-07 11:36   ` Robin Murphy
2020-07-07 14:41     ` [Freedreno] " Rob Clark
2020-07-08 19:35     ` Jordan Crouse
2020-06-26 20:04 ` [PATCH v2 5/6] drm/msm: Add support for address space instances Jordan Crouse
2020-06-26 20:04 ` [PATCH v2 6/6] drm/msm/a6xx: Add support for per-instance pagetables Jordan Crouse
2020-06-27 19:56   ` Rob Clark
2020-06-27 20:11     ` Rob Clark
2020-06-29 14:56       ` [Freedreno] " Jordan Crouse

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=20200626200414.14382-1-jcrouse@codeaurora.org \
    --to=jcrouse@codeaurora.org \
    --cc=airlied@linux.ie \
    --cc=akhilpo@codeaurora.org \
    --cc=daniel@ffwll.ch \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=emil.velikov@collabora.com \
    --cc=eric@anholt.net \
    --cc=freedreno@lists.freedesktop.org \
    --cc=iommu@lists.linux-foundation.org \
    --cc=john.stultz@linaro.org \
    --cc=jonathan@marek.ca \
    --cc=jroedel@suse.de \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=robin.murphy@arm.com \
    --cc=sean@poorly.run \
    --cc=smasetty@codeaurora.org \
    --cc=will@kernel.org \
    --subject='Re: [PATCH v2 0/6] iommu-arm-smmu: Add auxiliary domains and per-instance pagetables' \
    /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

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).