From: "Stéphane ANCELOT" <sancelot@free•fr>
To: netdev@vger•kernel.org
Cc: sancelot@numalliance•com
Subject: Fwd: Re: RTL 8169 linux driver question
Date: Fri, 23 Nov 2012 20:14:37 +0100 [thread overview]
Message-ID: <50AFCB1D.8080002@free.fr> (raw)
In-Reply-To: <50AFC971.7010103@free.fr>
Hi,
I have got a question regarding RTL8169 driver.
I have an adapted version of this driver for a realtime linux kernel and
a 8168/811B rev 2 component (as listed by lspci).
I had problem with it, my application sends a frame that is immediately
transmitted back by some slaves, there was abnormally 100us lost
between the send and receive call.
Finally I found it was coming from the following register setup in the
driver :
RTL_W16(IntrMitigate, 0x5151);
Can you give me some details about it, since I do not have the RTL8169
programming guide.
/100us is important since this component acts as an Ethercat Master
running at 1ms./
Regards,
Stephane Ancelot
R & D department
NUMALLIANCE
http://www.numalliance.com
next parent reply other threads:[~2012-11-23 19:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <50AFC971.7010103@free.fr>
2012-11-23 19:14 ` Stéphane ANCELOT [this message]
2012-11-23 19:20 ` Fwd: Re: RTL 8169 linux driver question Francois Romieu
2012-11-26 7:35 ` Stéphane ANCELOT
2012-11-26 9:15 ` David Laight
2012-11-27 22:46 ` Francois Romieu
2012-11-28 0:35 ` Stéphane ANCELOT
2012-11-28 2:32 ` hayeswang
2012-11-28 9:33 ` David Laight
2012-11-28 23:18 ` Francois Romieu
2017-09-27 20:30 ` RTL8169 vs low-latency (was: Re: Re: RTL 8169 linux driver question) Kirill Smelkov
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