Re: mac scsi, ncr5380

[Boaz Harrosh <bharrosh@panasas.com>]

Finn Thain wrote:
> 
> On Sun, 28 Sep 2008, Boaz Harrosh wrote:
> 
>> From what I understand, (And again I do not), the ESP sounds a lot like 
>> the NCR5380. I would craft a very similar copy of the new ESP stack, 
>> with it's central library and function-vector registration, The 
>> scsi-generic part is all there, in full glory. Then one concentrated 
>> effort should go into the basic/general chip programing, which lots of 
>> it could be ripped from current code, and the different platform 
>> implementation becomes one liners, if the new ESP stack is any 
>> indication.
> 
> I still do not understand the whole ESP driver but when I wrote mac_esp.c 
> I learned the value of the layered structure it provided.
> 
> I still have a lot to learn about the SCSI layers and the APIs too. I'm 
> reading Documentation/scsi at the moment. If you know of any other 
> introductory reading material, that would be a help.
> 

I don't know anything about the ESP driver, You should contact
David S. Miller, Perhaps he will have some time to help you.

The SCSI-API I know more about. Please don't hesitate to ask 
any question, I will be glad to answer.

>> From my passed experience, there becomes a source code state when a 
>> rewrite is less effort then any cleanup or enhancements. From the small 
>> changes I had to do to the xxx_NCR5380 family of drivers, my guts 
>> feeling scream "rewrite", so here I voice them. In the mid/long-term you 
>> will work much less. And be much more satisfied from the results.
> 
> This makes sense. Thanks for your feedback.
> 
> Finn
> 
>> Good lock
>> Boaz
>> --

Thanks for looking into this. We are here for any assistance
Boaz