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From: Arnd Bergmann <arnd@arndb.de>
To: Ravi Patel <rapatel@apm.com>
Cc: devicetree@vger.kernel.org, jcm@redhat.com,
	gregkh@linuxfoundation.org, patches@apm.com,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	Keyur Chudgar <kchudgar@apm.com>,
	davem@davemloft.net, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH V2 0/4] misc: xgene: Add support for APM X-Gene SoC Queue Manager/Traffic Manager
Date: Sat, 21 Dec 2013 21:11:40 +0100	[thread overview]
Message-ID: <201312212111.40576.arnd@arndb.de> (raw)
In-Reply-To: <1387594651-25771-1-git-send-email-rapatel@apm.com>

On Saturday 21 December 2013, Ravi Patel wrote:
> This patch adds support for APM X-Gene SoC Queue Manager/Traffic Manager.
>  QMTM is required by APM X-Gene SoC Ethernet, PktDMA (XOR Engine) and
>  Security Engine subsystems. All subsystems communicate with QMTM using
>  messages which include information about the work to be performed and
>  the location of associated data buffers.  

Please describe here what the purpose of the qmtm is, as this is not
entirely clear from the code.

In particular, please describe how this differs from a dmaengine driver
and why it is not possible to extend the dma slave API to describe qmtm
as a dma engine.

	Arnd

  parent reply	other threads:[~2013-12-21 20:11 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-21  2:57 [PATCH V2 0/4] misc: xgene: Add support for APM X-Gene SoC Queue Manager/Traffic Manager Ravi Patel
2013-12-21  2:57 ` [PATCH V2 1/4] Documentation: Add documentation for APM X-Gene SoC Queue Manager/Traffic Manager DTS binding Ravi Patel
2013-12-21 18:52   ` Arnd Bergmann
     [not found] ` <1387594651-25771-1-git-send-email-rapatel-qTEPVZfXA3Y@public.gmane.org>
2013-12-21  2:57   ` [PATCH V2 2/4] misc: xgene: Add base driver for APM X-Gene SoC Queue Manager/Traffic Manager Ravi Patel
     [not found]     ` <1387594651-25771-3-git-send-email-rapatel-qTEPVZfXA3Y@public.gmane.org>
2013-12-21 20:04       ` Arnd Bergmann
     [not found]         ` <201312212104.58732.arnd-r2nGTMty4D4@public.gmane.org>
2013-12-22  1:45           ` Ravi Patel
2013-12-22  6:54             ` Arnd Bergmann
2013-12-21  2:57 ` [PATCH V2 3/4] arm64: boot: dts: Add DTS entries " Ravi Patel
2013-12-21  2:57 ` [PATCH V2 4/4] misc: xgene: Add error handling " Ravi Patel
2013-12-21 20:11 ` Arnd Bergmann [this message]
2013-12-22  1:00   ` [PATCH V2 0/4] misc: xgene: Add support " Loc Ho
2013-12-22  7:03     ` Arnd Bergmann
2014-01-04 23:59       ` Ravi Patel
     [not found]         ` <CAN1v_PtFz42crHW5=cUgw-fAnPn3rQht=o0t3nmjJRamYSLDMg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-05  3:38           ` Greg KH
2014-01-05  5:27             ` Ravi Patel
2014-01-05  5:39             ` Loc Ho
     [not found]               ` <CAPw-ZT=noCwc+3o_762ewTcn2J3SjZ5u11V=Aa8RrZZf4DT5Yw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-05 18:01                 ` Greg KH
     [not found]                   ` <20140105180122.GB980-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2014-01-05 20:52                     ` Ravi Patel
2014-01-05 18:11         ` Arnd Bergmann
     [not found]           ` <201401051911.12349.arnd-r2nGTMty4D4@public.gmane.org>
2014-01-05 20:48             ` Ravi Patel
     [not found]               ` <CAN1v_PsaAeDiLaiP7FfTHFbNRG=UHuom6-2L6NMwzyOOyB+5cA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-10 22:40                 ` Ravi Patel
2014-01-12 21:19                   ` Arnd Bergmann
2014-01-13 22:18                     ` Ravi Patel
2014-01-14  6:58                       ` Arnd Bergmann
2014-01-14 15:15                       ` Arnd Bergmann
     [not found]                         ` <201401141615.55820.arnd-r2nGTMty4D4@public.gmane.org>
2014-01-28  0:58                           ` Ravi Patel
2014-01-30 14:35                             ` Arnd Bergmann
2013-12-21 21:06 ` Greg KH
     [not found]   ` <20131221210638.GA30102-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2013-12-21 23:16     ` Ravi Patel

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