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From: gregkh@linuxfoundation.org (Greg KH)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/4] misc: xgene: Add base driver for APM X-Gene SoC Queue Manager/Traffic Manager
Date: Thu, 19 Dec 2013 20:24:26 -0800	[thread overview]
Message-ID: <20131220042426.GA21726@kroah.com> (raw)
In-Reply-To: <CAN1v_PuBZHN85xTodfSZ-+H4Wdj0T8kSFUJB56KVj9xFH3--JQ@mail.gmail.com>


A: Top-posting.
Q: What is the most annoying thing in e-mail?

http://daringfireball.net/2007/07/on_top

On Thu, Dec 19, 2013 at 07:41:13PM -0800, Ravi Patel wrote:
> There is no need to talk to this driver from userspace.
> It is a device which is used by other IO devices to communicate with each
> other, including CPU.
> For example, if CPU (software) wants to send a message to Ethernet HW (i.e.
> send packet),
> it used this driver to enqueue a message to Ethernet.
> In other direction, if Ethernet HW receives a packet, it uses QM/TM device to
> send message to
> CPU (software) to process packet.

So it's a "bus" type of thing, right?

My question of "why isn't this reflected in the driver model" still
stands.

thanks,

greg k-h

WARNING: multiple messages have this Message-ID (diff)
From: Greg KH <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
To: Ravi Patel <rapatel-qTEPVZfXA3Y@public.gmane.org>
Cc: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
	davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org,
	netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	jcm-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
	patches-qTEPVZfXA3Y@public.gmane.org,
	Keyur Chudgar <kchudgar-qTEPVZfXA3Y@public.gmane.org>
Subject: Re: [PATCH 2/4] misc: xgene: Add base driver for APM X-Gene SoC Queue Manager/Traffic Manager
Date: Thu, 19 Dec 2013 20:24:26 -0800	[thread overview]
Message-ID: <20131220042426.GA21726@kroah.com> (raw)
In-Reply-To: <CAN1v_PuBZHN85xTodfSZ-+H4Wdj0T8kSFUJB56KVj9xFH3--JQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>


A: Top-posting.
Q: What is the most annoying thing in e-mail?

http://daringfireball.net/2007/07/on_top

On Thu, Dec 19, 2013 at 07:41:13PM -0800, Ravi Patel wrote:
> There is no need to talk to this driver from userspace.
> It is a device which is used by other IO devices to communicate with each
> other, including CPU.
> For example, if CPU (software) wants to send a message to Ethernet HW (i.e.
> send packet),
> it used this driver to enqueue a message to Ethernet.
> In other direction, if Ethernet HW receives a packet, it uses QM/TM device to
> send message to
> CPU (software) to process packet.

So it's a "bus" type of thing, right?

My question of "why isn't this reflected in the driver model" still
stands.

thanks,

greg k-h
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WARNING: multiple messages have this Message-ID (diff)
From: Greg KH <gregkh@linuxfoundation.org>
To: Ravi Patel <rapatel@apm.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	davem@davemloft.net, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, jcm@redhat.com,
	patches@apm.com, Keyur Chudgar <kchudgar@apm.com>
Subject: Re: [PATCH 2/4] misc: xgene: Add base driver for APM X-Gene SoC Queue Manager/Traffic Manager
Date: Thu, 19 Dec 2013 20:24:26 -0800	[thread overview]
Message-ID: <20131220042426.GA21726@kroah.com> (raw)
In-Reply-To: <CAN1v_PuBZHN85xTodfSZ-+H4Wdj0T8kSFUJB56KVj9xFH3--JQ@mail.gmail.com>


A: Top-posting.
Q: What is the most annoying thing in e-mail?

http://daringfireball.net/2007/07/on_top

On Thu, Dec 19, 2013 at 07:41:13PM -0800, Ravi Patel wrote:
> There is no need to talk to this driver from userspace.
> It is a device which is used by other IO devices to communicate with each
> other, including CPU.
> For example, if CPU (software) wants to send a message to Ethernet HW (i.e.
> send packet),
> it used this driver to enqueue a message to Ethernet.
> In other direction, if Ethernet HW receives a packet, it uses QM/TM device to
> send message to
> CPU (software) to process packet.

So it's a "bus" type of thing, right?

My question of "why isn't this reflected in the driver model" still
stands.

thanks,

greg k-h

  parent reply	other threads:[~2013-12-20  4:24 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-20  2:44 [PATCH 0/4] misc: xgene: Add support for APM X-Gene SoC Queue Manager/Traffic Manager Ravi Patel
2013-12-20  2:44 ` Ravi Patel
2013-12-20  2:44 ` Ravi Patel
2013-12-20  2:45 ` [PATCH 1/4] Documentation: Add documentation for APM X-Gene SoC Queue Manager/Traffic Manager DTS binding Ravi Patel
2013-12-20  2:45   ` Ravi Patel
2013-12-20  2:45   ` Ravi Patel
2013-12-20  2:45 ` [PATCH 2/4] misc: xgene: Add base driver for APM X-Gene SoC Queue Manager/Traffic Manager Ravi Patel
2013-12-20  2:45   ` Ravi Patel
2013-12-20  2:45   ` Ravi Patel
2013-12-20  3:20   ` Greg KH
2013-12-20  3:20     ` Greg KH
2013-12-20  3:20     ` Greg KH
2013-12-22  0:20     ` Ravi Patel
2013-12-22  0:20       ` Ravi Patel
2013-12-22  0:20       ` Ravi Patel
2013-12-22  0:40       ` Greg KH
2013-12-22  0:40         ` Greg KH
2013-12-22  0:40         ` Greg KH
2013-12-20  3:21   ` Greg KH
2013-12-20  3:21     ` Greg KH
     [not found]     ` <CAN1v_PuBZHN85xTodfSZ-+H4Wdj0T8kSFUJB56KVj9xFH3--JQ@mail.gmail.com>
2013-12-20  4:24       ` Greg KH [this message]
2013-12-20  4:24         ` Greg KH
2013-12-20  4:24         ` Greg KH
2013-12-22  0:43         ` Ravi Patel
2013-12-22  0:43           ` Ravi Patel
2013-12-22  1:01           ` Greg KH
2013-12-22  1:01             ` Greg KH
2013-12-20  2:45 ` [PATCH 3/4] arm64: boot: dts: Add DTS entries " Ravi Patel
2013-12-20  2:45   ` Ravi Patel
2013-12-20  2:45   ` Ravi Patel
2013-12-20  2:45 ` [PATCH 4/4] misc: xgene: Add error handling " Ravi Patel
2013-12-20  2:45   ` Ravi Patel
2013-12-20  2:45   ` Ravi Patel
2013-12-20  3:22 ` [PATCH 0/4] misc: xgene: Add support " Greg KH
2013-12-20  3:22   ` Greg KH
2013-12-20  3:22   ` Greg KH
     [not found]   ` <CAN1v_PsibDTwQ9_ZxRnBtJA46BPne6fTuS_9TddWPZt6ewwgQQ@mail.gmail.com>
2013-12-20  3:40     ` Greg KH
2013-12-20  3:40       ` Greg KH
2013-12-20  3:40       ` Greg KH
2013-12-20 17:46 ` Ben Hutchings
2013-12-20 17:46   ` Ben Hutchings
2013-12-20 17:46   ` Ben Hutchings
2013-12-20 19:00   ` Greg KH
2013-12-20 19:00     ` Greg KH

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