netdev - Re: [PATCH 1/1] altera tse: Error-Bit on tx-avalon-stream always set.

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Message-Id: <20150420.220205.251689458027858902.davem@davemloft.net>
Date:	Mon, 20 Apr 2015 22:02:05 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	ennoerlangen@...glemail.com
Cc:	vbridger@...nsource.altera.com, netdev@...r.kernel.org,
	nios2-dev@...ts.rocketboards.org, ennoerlangen@...il.com
Subject: Re: [PATCH 1/1] altera tse: Error-Bit on tx-avalon-stream always
 set.

From: Andreas Oetken <ennoerlangen@...glemail.com>
Date: Tue, 21 Apr 2015 00:16:38 +0200

> From: Andreas Oetken <ennoerlangen@...il.com>
> 
> The Error-Bit on the avalon streaming interface of the
> tx-dma-channel was always set. In SGMII configurations
> this leads to error-symbols on the PCS and packet-rejection
> on the receiver side (e.g. SGMII/1000Base-X connected switch).
> 
> This only applies to the tse-configuration with MSGDMA.
> 
> This issue was detected and fixed on a custom board with
> a direct connection to a Marvell switch in SGMII-PHY-Mode.
> (incl. custom patches for SGMII-PCS).
> 
> According to the datasheet if ff_tx_err (avalon-streaming)
> is set it is forwarded to gm_tx_err. As a result the PCS
> is forwarding the error by sending a "/V/"-caracter.
> 
> Signed-off-by: Andreas Oetken <ennoerlangen@...il.com>

Applied.
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