Re: [V5 1/2] dmaengine: fsl-dpaa2-qdma: Add the DPDMAI(Data Path DMA Interface) support

[Vinod Koul]

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