From: Vinod Koul <vkoul@kernel.org>
To: Peng Ma <peng.ma@nxp.com>
Cc: dan.j.williams@intel.com, leoyang.li@nxp.com,
linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org
Subject: Re: [V5 1/2] dmaengine: fsl-dpaa2-qdma: Add the DPDMAI(Data Path DMA Interface) support
Date: Thu, 17 Oct 2019 09:41:24 +0530 [thread overview]
Message-ID: <20191017041124.GN2654@vkoul-mobl> (raw)
In-Reply-To: <20190930020440.7754-1-peng.ma@nxp.com>
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
next prev parent reply other threads:[~2019-10-17 4:11 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-30 2:04 [V5 1/2] dmaengine: fsl-dpaa2-qdma: Add the DPDMAI(Data Path DMA Interface) support Peng Ma
2019-09-30 2:04 ` [V5 2/2] dmaengine: fsl-dpaa2-qdma: Add NXP dpaa2 qDMA controller driver for Layerscape SoCs Peng Ma
2019-10-17 4:11 ` Vinod Koul [this message]
2019-10-17 6:15 ` [EXT] Re: [V5 1/2] dmaengine: fsl-dpaa2-qdma: Add the DPDMAI(Data Path DMA Interface) support Peng Ma
2019-10-22 9:27 ` Anders Roxell
2019-10-22 10:19 ` Peng Ma
2019-10-22 11:10 ` Anders Roxell
2019-10-23 2:44 ` Peng Ma
2019-10-22 16:10 ` Vinod Koul
2019-10-23 2:38 ` Peng Ma
-- strict thread matches above, loose matches on Subject: below --
2019-06-25 8:12 Peng Ma
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