netdev - Re: [PATCH 03/15] tg3: Preserve DASH connectivity when WOL enabled

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Message-Id: <20081103.165119.244108370.davem@davemloft.net>
Date:	Mon, 03 Nov 2008 16:51:19 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	mcarlson@...adcom.com
Cc:	netdev@...r.kernel.org, mchan@...adcom.com, andy@...yhouse.net
Subject: Re: [PATCH 03/15] tg3: Preserve DASH connectivity when WOL enabled

From: "Matt Carlson" <mcarlson@...adcom.com>
Date: Mon, 3 Nov 2008 02:10:57 -0800

> DASH firmware runs on the APE side of the chip, but it requires a few MAC
> to be programmed correctly.
> 
> When WOL is enabled and management firmware is disabled, incoming
> packets are evaluated and discarded at the chip's rule processor.
> When management firmware is enabled, the hardware must be informed that
> there are agents further up the stack that still use the incoming
> frames.  Normally management firmware will configure the MAC correctly
> on its own, but there can be cases where the setting could get clobbered
> by the driver.  The first hunk of this patch preserves this setting.
> 
> The second hunk of this patch wipes out the driver present signature of
> the APE memory space.  By doing so, the DASH firmware can assume
> driver absent behavior.
> 
> Signed-off-by: Matt Carlson <mcarlson@...adcom.com>
> Signed-off-by: Michael Chan <mchan@...adcom.com>

Applied.
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