What:		/sys/class/iommu/ummu.<x>/ummu-iommu/eid_list
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		List of all EIDs registered to UMMU.

What:		/sys/class/iommu/ummu.<x>/ummu-iommu/evtq_log2num
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		The number of Event Queues in the non-secure state of the
		UMMU device (in log2).

What:		/sys/class/iommu/ummu.<x>/ummu-iommu/evtq_log2size
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		The depth of each Event Queue in the non-secure state of the
		UMMU device (in log2).

What:		/sys/class/iommu/ummu.<x>/ummu-iommu/features
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		UMMU device capabilities.

What:		/sys/class/iommu/ummu.<x>/ummu-iommu/mcmdq_log2num
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		The number of Command Queues in the non-secure state of the
		UMMU device in kernel mode.

What:		/sys/class/iommu/ummu.<x>/ummu-iommu/mcmdq_log2size
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		The depth of each command queue in the non-secure state of the
		UMMU device in kernel mode.

What:		/sys/class/iommu/ummu.<x>/ummu-iommu/permq_ent_num
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		The depth of the permission queue in user mode of the UMMU
		device (in log2).

What:		/sys/class/iommu/ummu.<x>/ummu-iommu/permq_num
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		The number of permission queues in user mode of the UMMU
		device (in log2).

What:		/sys/class/iommu/ummu.<x>/ummu-iommu/ias
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		The bit width of the input address supported by the UMMU
		device.

What:		/sys/class/iommu/ummu.<x>/ummu-iommu/oas
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		The bit width of the output address of the UMMU device.

What:		/sys/class/iommu/ummu.<x>/ummu-iommu/options
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		Configurable features of the UMMU device.

What:		/sys/class/iommu/ummu.<x>/ummu-iommu/pgsize_bitmap
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		Supported page size bitmap of the UMMU translation table.

What:		/sys/class/iommu/ummu.<x>/ummu-iommu/ptsize_bitmap
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		Supported page size bitmap of the UMMU MAPT table
		(permission check).

What:		/sys/class/iommu/ummu.<x>/ummu-iommu/tid_bits
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		Maximum TokenID bit width supported in non-secure state.

What:		/sys/class/iommu/logic_ummu/tid_type
Date:		Oct 2025
KernelVersion:	6.6
Contact:	Jingbin Wu <wujingbin2@huawei.com>
Description:
		The domain_type corresponding to the TokenID, which requires
		the TokenID value as input. Format: %x.
