Date: Mon, 20 Apr 1998 08:49:27 -0500 From: Doug Ledford <dledford@dialnet.net> To: Richard Cardoe <cardoe@comp.lancs.ac.uk> Cc: AIC7xxx@FreeBSD.ORG Subject: Re: Target Mode Message-ID: <353B5267.FCF47ECD@dialnet.net> References: <2604.199804201249@tina.comp.lancs.ac.uk>
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Richard Cardoe wrote:
>
> Hi,
>
> I've just started to implement target mode for the aic7xxx driver, under Linux. However, when I
> downloaded the latest driver (5.0.10) I found several references to target mode in both the
> sequencer code and the driver. Can anybody tell me the state of play as regards target mode
> implementation?
I would suspect that the target mode in the sequencer is unuseable in that
version. It's only a beginning framework that isn't functional yet.
Furthermore, since the upper level SCSI layers in linux know nothing about
target mode, additional work would have to be done to get the commands out
even if you could get them off the bus. So, for those reasons, that code in
linux is there as reference, but it isn't used nor likely to be easily
useable (for one thing, the target mode code in the current linux sequencer,
which is still the Jan FreeBSD sequencer, hasn't been updated to not use the
QINFIFO and QOUTFIFO registers, so it absolutely will not work with the
current kernel driver code that doesn't use those registers at all).
--
Doug Ledford <dledford@dialnet.net>
Opinions expressed are my own, but
they should be everybody's.
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