[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20190410151516.47754-1-jean-philippe.brucker@arm.com>
Date: Wed, 10 Apr 2019 16:15:15 +0100
From: Jean-Philippe Brucker <jean-philippe.brucker@....com>
To: joro@...tes.org
Cc: iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
christian.koenig@....com, kevin.tian@...el.com,
jacob.jun.pan@...ux.intel.com, ashok.raj@...el.com,
baolu.lu@...ux.intel.com, zhangfei.gao@...mail.com
Subject: [PATCH v3 0/1] IOMMU SVA device driver interface
This is the device driver API for SVA (Shared Virtual Addressing).
Since v2 I removed the set_sva_ops() IOMMU operation as suggested by
Joerg, instead doing the sva_ops assignment in iommu.c.
The four dev_feature functions are implemented by Lu Baolu's IOMMU-aware
mdev series [2].
iommu_dev_has_feature(dev, IOMMU_DEV_FEAT_SVA) -> true/false
iommu_dev_enable_feature(dev, IOMMU_DEV_FEAT_SVA) -> 0/err
iommu_dev_disable_feature(dev, IOMMU_DEV_FEAT_SVA) -> 0/err
iommu_dev_feature_enabled(dev, IOMMU_DEV_FEAT_SVA) -> true/false
Patch 1/1 adds the next four functions, once the SVA feature is enabled:
iommu_sva_bind(dev, mm, drvdata) -> handle
iommu_sva_set_ops(handle, iommu_sva_ops) -> 0/err
iommu_sva_get_pasid(handle) -> pasid/invalid
iommu_sva_unbind(handle)
Generic implementation and SMMUv3 support can be found at [3].
[1] https://lore.kernel.org/lkml/20190320150258.3240-1-jean-philippe.brucker@arm.com/
[2] https://lore.kernel.org/lkml/20190325013036.18400-1-baolu.lu@linux.intel.com/
[3] git://linux-arm.org/linux-jpb.git sva/current
http://www.linux-arm.org/git?p=linux-jpb.git;a=shortlog;h=refs/heads/sva/current
Jean-Philippe Brucker (1):
iommu: Bind process address spaces to devices
drivers/iommu/iommu.c | 104 ++++++++++++++++++++++++++++++++++++++++++
include/linux/iommu.h | 70 ++++++++++++++++++++++++++++
2 files changed, 174 insertions(+)
--
2.21.0
Powered by blists - more mailing lists