Date: Wed, 20 May 1998 11:41:02 -0600 From: "Justin T. Gibbs" <gibbs@plutotech.com> To: "Greg Rowe" <greg@uswest.net> Cc: gibbs@plutotech.com, scsi@FreeBSD.ORG Subject: Re: CAM and Adaptec 2940UW Rev E Message-ID: <199805201745.LAA16065@pluto.plutotech.com> In-Reply-To: Your message of "Wed, 20 May 1998 14:38:43 -0000." <9805201438.ZM11164@psv.oss.uswest.net>
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>Justin,
>
> We finally got a chance to test the Adaptec 2940UW Revision E cards with CAM
>and the problems still exist. Our configuration is a Tyan MB, 2 Adaptec
>2940UW's , 3 - 4.4 Gig Seagate ST34572W drives. OS is 3.0 current as of 05/15
>and CAM-980513. The revision D cards work with no problem, but running bonnie
>or iozone with the Rev E cards produce the following (and a system crash):
I know about one system crash during recovery and have fixed that locally,
but I'm working now to try and reproduce your error. I have to plead
ignorance to what you mean by rev D and rev E cards. I have cards with
both rev 0 and 1 aic7880s on them, but I don't know where you are getting
the D and E letter.
This is the card I'm going to work with:
ahc0: <Adaptec 2940 Ultra SCSI adapter> rev 0x01 int a irq 9 on pci0.9.0
ahc0: aic7880 Wide Channel A, SCSI Id=7, 16/255 SCBs
As you can see, it has a rev 1 aic7880.
I have access to ultra-narrow versions of the 4gig Barracuda you're using
(same firmware rev. even), but if this turns out to be a wide problem, I
won't be able to reproduce it here.
>From the debugging messages you've sent me, it's clear that the chip is
hanging up attempting to turn off the DMA fifo, and I don't know why this
is the case. It would be useful for you to add a printf in ahc_timeout()
that give the contents of a register:
printf("DFCNTRL = %x\n", ahc_inb(ahc, DFCNTRL));
Place it down near the printf for SEQADDR and friends.
--
Justin
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