On 30-09-19, 02:04, Peng Ma wrote: > The MC(Management Complex) exports the DPDMAI(Data Path DMA Interface) > object as an interface to operate the DPAA2(Data Path Acceleration > Architecture 2) qDMA Engine. The DPDMAI enables sending frame-based > requests to qDMA and receiving back confirmation response on transaction > completion, utilizing the DPAA2 QBMan(Queue Manager and Buffer Manager > hardware) infrastructure. DPDMAI object provides up to two priorities for > processing qDMA requests. > The following list summarizes the DPDMAI main features and capabilities: > 1. Supports up to two scheduling priorities for processing > service requests. > - Each DPDMAI transmit queue is mapped to one of two service > priorities, allowing further prioritization in hardware between > requests from different DPDMAI objects. > 2. Supports up to two receive queues for incoming transaction > completion confirmations. > - Each DPDMAI receive queue is mapped to one of two receive > priorities, allowing further prioritization between other > interfaces when associating the DPDMAI receive queues to DPIO > or DPCON(Data Path Concentrator) objects. > 3. Supports different scheduling options for processing received > packets: > - Queues can be configured either in 'parked' mode (default), > or attached to a DPIO object, or attached to DPCON object. > 4. Allows interaction with one or more DPIO objects for > dequeueing/enqueueing frame descriptors(FD) and for > acquiring/releasing buffers. > 5. Supports enable, disable, and reset operations. > > Add dpdmai to support some platforms with dpaa2 qdma engine. Applied both, thanks -- ~Vinod
