Hi again,
Your explanation of the problem was excellent. Thanks.
Sounds like I am OK for now since my controller is an AHA 1520B, and
since I have the parameters in my module.conf file.
Blair.
At 05:28 +0200 2000/04/13, Jarl Friis wrote:
>On Wed, 12 Apr 2000, Blair Lowe wrote:
>
>> Thanks Jarl,
>>
>> Pardon my newbieness, but what does that signature do, and should I
>> be worried with a AHA 1520B controller with 2.2.12-20 (ie. will the
>> controller not work properly?)?
>
>I am not sure to whom you refer the newbieness to, but I guess it is me,
>and I admit that I just subscribed this mailing list to contribute, I maybe
>should have mentioned, that YES this is my first attempt to help in the
>Linux kernel development. So yes I am newbie.
>
>Let me exaplain: The signatures is there only for one reason, the aha152x
>driver will be able to autodetect controllers with BIOS's if the driver
>can recognize a "signature" in the BIOS, it tries all the signatures at
>different baseaddresses and if a "known" signature is found it does not
>have to probe to find the SCSI controller. I guess it can fetch certain
>parameters. So that is why there is a list of different signatures; only
>to make it easier for the user.
>
>As someone also commented in the code, it could be nice to include
>information of what kind ofcapabilities the different controllers have
>such as extended translation.
>
>So all I tried to do was to add yet a signature to the list, so that in
>the next release of a kernel, the aha152x driver will be able to detect
>even more controllers, in this case the Iomega Jaz Jet ISA controller (an
>aha1520B in different BIOS disguise).
>
>So to answer you question about worryness: If your controller is
>recognised by aha152x you don't have to worry, but if it does not
>recognise it and you have to manually add parameters like
>aha152x=0x340,11,0... I don't remmeber Then it is probably because the
>driver can not detect your controllers signatures. Then by adding a
>signature in the aha152x driver you no longer have to add parameters.
>
>All about signatures, and autodetection of signatures only applies to SCSI
>controllers with BIOS's.
>
>Ask again if you believe that your controller has a BIOS, and it is NOT
>autodetected, then I can help you to extract a "signature" from your BIOS,
>so that your controller will be autodtected as well.
>
>I hope this helped.
>
>I only have one problem, I don't know to whom to give this patch so that
>it will be included in the next kernel release, can someone help?
>
>Jarl
Computer Engineering Inc.
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