iommu/arm-smmu-v3: Make default domain type of HiSilicon PTT device to identity
authorYicong Yang <yangyicong@hisilicon.com>
Tue, 16 Aug 2022 11:44:10 +0000 (19:44 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 26 Oct 2022 10:35:47 +0000 (12:35 +0200)
commit3d6946180734379d161ff6c903ccff7cb2f288f0
tree45ac0577d39e4cc6ec583c6e610ddb7e836de218
parentc0d73be0af8c1310713bc39a8d7a22e35084e14f
iommu/arm-smmu-v3: Make default domain type of HiSilicon PTT device to identity

[ Upstream commit 24b6c7798a0122012ca848ea0d25e973334266b0 ]

The DMA operations of HiSilicon PTT device can only work properly with
identical mappings. So add a quirk for the device to force the domain
as passthrough.

Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/20220816114414.4092-2-yangyicong@huawei.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c