[PATCH v2 0/7] Add PCI ATS support to Arm SMMUv3 - Jean-Philippe Brucker

From: Jean-Philippe Brucker <jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
To: will.deacon-5wv7dgnIgG8@public.gmane.org
Cc: zhongmiao-C8/M+/jPZTeaMJb+Lgu22Q@public.gmane.org,
	okaya-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	rjw-LthD3rsA81gm4RdzfppkhA@public.gmane.org,
	linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	sudeep.holla-5wv7dgnIgG8@public.gmane.org,
	robin.murphy-5wv7dgnIgG8@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	lenb-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org
Subject: [PATCH v2 0/7] Add PCI ATS support to Arm SMMUv3
Date: Tue,  9 Apr 2019 17:52:38 +0100	[thread overview]
Message-ID: <20190409165245.26500-1-jean-philippe.brucker@arm.com> (raw)

This series enables PCI ATS in SMMUv3. Changes since v1 [1]:

* Simplify the SMMU structures (patches 2-4 are new).

* Don't enable ATS for devices that are attached to a bypass domain,
  because in that case a translation request would cause F_BAD_ATS_TREQ.
  Translation requests in that case cause F_BAD_ATS_TREQ. Enable ATS in
  attach_dev() rather than add_device().

* Enable ATS for stage-1 and stage-2 STEs alike. There is no benefit to
  disabling ATS for stage-2 domains.

[1] https://www.spinics.net/lists/arm-kernel/msg714628.html

Jean-Philippe Brucker (7):
  ACPI/IORT: Check ATS capability in root complex nodes
  iommu/arm-smmu-v3: Rename arm_smmu_master_data to arm_smmu_master
  iommu/arm-smmu-v3: Store SteamIDs in master
  iommu/arm-smmu-v3: Add a master->domain pointer
  iommu/arm-smmu-v3: Link domains and devices
  iommu/arm-smmu-v3: Add support for PCI ATS
  iommu/arm-smmu-v3: Disable tagged pointers

 drivers/acpi/arm64/iort.c   |  11 ++
 drivers/iommu/arm-smmu-v3.c | 340 ++++++++++++++++++++++++++++--------
 include/linux/iommu.h       |   4 +
 3 files changed, 286 insertions(+), 69 deletions(-)

-- 
2.21.0