diff options
| author | Charan Teja Reddy <charante@codeaurora.org> | 2017-04-20 19:11:20 +0530 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2017-04-25 02:03:54 -0700 |
| commit | ad3b1dcc9393ae156f3714110070cf0afb1ef1c4 (patch) | |
| tree | 1f5a4b7d9f48dbcd8a859a3cd182a11e33628cff /include/linux | |
| parent | 048c70075fecb8f92d923fc5595efa00f2a00082 (diff) | |
iommu: disable smmu stalls on faulty transactions
Disable the SMMU stalls on faulty transactions by terminating it using
the CB.SCTLR register. Faulty transaction on a CB causes the back
pressure on the QSMMU transaction pipe which inturn affect the other
masters using the same SMMU. Pass the DOMAIN_ATTR_CB_STALL_DISABLE flag
to iommu_domain_set_attr api in order to use this feature.
Change-Id: Ib8fa35854ff24e0295d330c5fb79375f58c3e841
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/iommu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index c4c25651ff21..55ae8b928411 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -137,6 +137,7 @@ enum iommu_attr { DOMAIN_ATTR_PAGE_TABLE_IS_COHERENT, DOMAIN_ATTR_PAGE_TABLE_FORCE_COHERENT, DOMAIN_ATTR_ENABLE_TTBR1, + DOMAIN_ATTR_CB_STALL_DISABLE, DOMAIN_ATTR_MAX, }; |