Re: SMP pass through interface via bsg

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On Mon, Apr 02 2007, Mike Christie wrote:
> Jens Axboe wrote:
> > On Tue, Apr 03 2007, FUJITA Tomonori wrote:
> >> From: James Bottomley <James.Bottomley@xxxxxxxxxxxx>
> >> Subject: Re: SMP pass through interface via bsg
> >> Date: Mon, 02 Apr 2007 12:01:41 -0500
> >>
> >>> On Tue, 2007-04-03 at 01:43 +0900, FUJITA Tomonori wrote:
> >>>> OK. I found another bug in smp_test tool (sends bogus response buffer
> >>>> len to kernel). I've uploaded a new patch:
> >>>>
> >>>> http://zaal.org/bsg/smp-test2.diff
> >>> That sort of works; you have a final bug in that the manufacturer info
> >>> response frame is 64 bytes, not 128 bytes, but with that corrected
> >>> everything goes through and I get the result back:
> >>>
> >>> hobholes:~# /home/jejb/git/sgv4-tools/smp_test /sys/class/bsg/expander-2\:0
> >>>   SAS-1.1 format: 0
> >>>   vendor identification: LSILOGIC
> >>>   product identification: SASx12 A.0      
> >>>   product revision level: 
> >>>
> >>> So we can class this one as a success ... 
> >>>
> >>> Thanks!
> >> Great! Thanks. I'll try to finish the mpt driver's hook
> >> sometime. Finally, We have a bsg user (though it also needs proper
> >> bidi support).
> >>
> >> Jens, what remains to be done before bsg is merged into mainline?
> > 
> > Well the bi-dir stuff and sg v4 design were the two bits that needed to
> > get done before pushing bsg made sense, so we are getting there...
> > Probably a 2.6.23 target, leaving the bidi bits a revision cycle to get
> > sorted out.
> > 
> 
> Could we get the bidi parts in without having to do the other sg clean
> ups (my patches to merge the blk_rq_map* with the scsi ULD (sg, etc,
> etc) equivalents or do the clean ups have to be done first?

IMO the sg cleanups are an orthogonal effort.

-- 
Jens Axboe

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