On 6/9/22 10:54, John Garry wrote:
ok, but do you have a system where the UFS host controller is behind an IOMMU? I had the impression that UFS controllers would be mostly found in embedded systems and IOMMUs are not as common on there.
Modern phones have an IOMMU. Below one can find an example from a Pixel 6 phone. The UFS storage controller is not controller by the IOMMU as far as I can see but I wouldn't be surprised if the security team would ask us one day to enable the IOMMU for the UFS controller.
# (cd /sys/class/iommu && ls */devices) 1a090000.sysmmu/devices: 19000000.aoc 1a510000.sysmmu/devices: 1a440000.lwis_csi 1a540000.sysmmu/devices: 1aa40000.lwis_pdp 1a880000.sysmmu/devices: 1a840000.lwis_g3aa 1ad00000.sysmmu/devices: 1ac40000.lwis_ipp 1ac80000.lwis_gtnr_align 1b080000.sysmmu/devices: 1b450000.lwis_itp 1b780000.sysmmu/devices: 1b7b0000.sysmmu/devices: 1b760000.lwis_mcsc 1b7e0000.sysmmu/devices: 1baa0000.sysmmu/devices: 1a4e0000.lwis_votf 1ba40000.lwis_gdc 1bad0000.sysmmu/devices: 1ba60000.lwis_gdc 1bb00000.sysmmu/devices: 1ba80000.lwis_scsc 1bc70000.sysmmu/devices: 1bc40000.lwis_gtnr_merge 1bca0000.sysmmu/devices: 1bcd0000.sysmmu/devices: 1bd00000.sysmmu/devices: 1bd30000.sysmmu/devices: 1c100000.sysmmu/devices: 1c300000.drmdecon 1c302000.drmdecon 1c110000.sysmmu/devices: 1c120000.sysmmu/devices: 1c660000.sysmmu/devices: 1c640000.g2d 1c690000.sysmmu/devices: 1c710000.sysmmu/devices: 1c700000.smfc 1c870000.sysmmu/devices: 1c8d0000.MFC-0 mfc 1c8a0000.sysmmu/devices: 1ca40000.sysmmu/devices: 1cb00000.bigocean 1cc40000.sysmmu/devices: 1ce00000.abrolhos Bart.
