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From: Sean Bruno <sean.bruno@dsl-only.net>
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Date: Mon, 16 Feb 2009 15:59:58 -0800
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Cc: scottl <scottl@freebsd.org>
Subject: Re: Enhance speed detection
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On Mon, 2009-02-16 at 15:57 -0800, Sean Bruno wrote:
> Synopsis:
> If speed of link between two devices is slower than the reported max
> speed of both endpoints, the current driver will fail and be unable to
> negotiate.
> 
> Summary:
> Test negotiated speed by reading the CSRROM into a dummy variable.
> If that read fails, decrement our speed and retry.  If all else fails,
> go to lowest speed possible.
> 
> Report speed to the user.
> Add display of the Bus Info Block when debug.firewire_debug > 1
> Support the Bus Info Block(1394a-2000) method of speed detection.
> 
> _______________________________________________

I also should note that I am moving "hold_count" to 0 for future
releases.

This variable determines how many bus resets to "hold" a removed
firewire device before deletion.  I don't feel this is useful and will
probably drop support for this sysctl in the future.

Sean