Abstract: Apparatus and method for performing address pre-translation to enhance direct memory access by hardware subsystems is described herein. An apparatus embodiment includes a processor to execute an enqueue instruction to submit, to a hardware subsystem, a job descriptor describing a job to be performed. The job descriptor includes virtual addresses of memory locations in which data required to perform the job are stored. An input-output memory management unit (IOMMU) is to obtain the address translations for the virtual addresses responsive to a pre-translation request from the processor. The address translations is obtained by the IOMMU prior to receiving a memory access request from the hardware subsystem. The IOMMU is to retrieve the data from the memory location using the address translations and to provide the retrieved data to the hardware subsystem to fulfill the request.

Abstract: An embodiment of an integrated circuit may comprise memory to store respective resource control descriptors in correspondence with respective identifiers, and an input/output (JO) memory management unit (IOMMU) communicatively coupled to the memory, the IOMMU including circuitry to determine resource control information for an IO transaction based on a resource control descriptor stored in the memory that corresponds to an identifier associated with the IO transaction, and control utilization of one or more resources of the IOMMU based on the determined resource control information. Other embodiments are disclosed and claimed.

Abstract: Examples described herein relate to circuitry to provide telemetry data of first circuitry based on a power state of the first circuitry and provide telemetry data of second circuitry based on a power state of the second circuitry.