The Freescale Data Path Acceleration Architecture (DPAA) is a set of
hardware components on specific QorIQ multicore processors.
This architecture provides the infrastructure to support simplified
sharing of networking interfaces and accelerators by multiple CPUs.
The major h/w blocks composing DPAA are BMan and QMan.

The Buffer Manager (BMan) is a hardware buffer pool management block
that allows software and accelerators on the datapath to acquire and
release buffers in order to build frames.

The Queue Manager (QMan) is a hardware queue management block
that allows software and accelerators on the datapath to enqueue and
dequeue frames in order to communicate.

source code:

drivers/soc/fsl/qbman/