[7908] in linux-scsi channel archive
Re: sym53c8xx v. ncr53c8xx, revisited
daemon@ATHENA.MIT.EDU (Gerard Roudier)
Sun Jan 23 18:50:45 2000
Date: Sun, 23 Jan 2000 16:30:45 +0100 (MET)
From: Gerard Roudier <groudier@club-internet.fr>
To: Chuck Lever <cel@monkey.org>
Cc: linux-scsi@vger.rutgers.edu
In-Reply-To: <Pine.BSO.4.10.10001211455430.26216-100000@funky.monkey.org>
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Hello Chuck,
The problem you report is known since a few time. It is a bug from me and
only occurs with SYM53C896 revision 1 and PROFILE_OPTION enabled for the
sym53c8xx driver. I have a 896 rev. 1 and a 896 rev. 3 but donnot use the
rev. 1 since a long time.
The below patch should fix:
--- sym53c8xx.c.0123 Sun Jan 23 15:52:27 2000
+++ sym53c8xx.c Sun Jan 23 15:52:42 2000
@@ -5481,7 +5481,7 @@
#ifndef SCSI_NCR_PROFILE_SUPPORT
#define XXX 0
#else
-#define XXX 3
+#define XXX 2
#endif
np->script0->dataphase[XXX] = cpu_to_scr(SCR_JUMP);
np->script0->dataphase[XXX+1] =
------------ Cut Here -------------
Btw, the 'profile option' is not that useful. I moved it from ncr to sym
for people who might have liked it so much that they would have been
extremally disappointed not to have it for the sym53c8xx driver. :-)
If you donnot set this driver option in the kernel config, the problem
will also vanish.
To complete your revisit of the drivers:), I invite you to have a look at:
ftp://ftp.lsil.com/HostAdapterDrivers/linux/
Pamela Delaney from LSILOGIC has implemented Ultra-3 support for the
53C1010 in the sym53c8xx driver and SCSI domain validation.
She did an excellent work. Latest driver versions are sym-3.31 and
ncr-1.61. For now, only patches against stable kernels are available.
These driver versions have been heavily tested by LSILOGIC and will be
candidate soon for both stable and latest Linux kernels.
Gérard.
On Fri, 21 Jan 2000, Chuck Lever wrote:
> possible bug here, or maybe i'm misconfiguring.
>
> the system is a four-way intel SC450NX with a sym53c810 on one PCI bus,
> and two sym53c896a's on a second PCI bus. kernel is 2.3.39.
>
> if i build the kernel with the ncr53c8xx driver, no SCSI problems.
>
> if i build the kernel with the sym53c8xx driver, the system loops during
> the driver's detection phase with these messages on the console:
>
> sym53c896-1: restart (scsi reset).
> sym53c896-1: handling phase mismatch from SCRIPTS.
> sym53c896-1: Downloading SCSI SCRIPTS.
> sym53c896-1: 0: ERROR (81:0) (3-a7-0) (0/7) @ (script 200:fe0013e0)
> sym53c896-1: script cmd = 800c0000
> sym53c896-1: regdump da 10 80 07 47 00 00 02 02 03 00 a7 80 01 07 09 00 c0
> 9a 01 08 00 00 00
>
> -- repeat ad nauseum --
>
> (copied by hand; serial console isn't working at the moment)
>
> i've also seen the looping behavior with a 2.2.13 kernel built with
> sym53c8xx. this kernel had booted previously, now suddenly it won't.
>
> the "assume boards are SYMBIOS compatible" option has not been enabled.
> i've also tried disabling the master parity bit, as was suggested by a
> previous poster on this list, to no avail.
>
> i'm not much of a SCSI expert, and could use a pointer. thanks!
>
> - Chuck Lever
> --
> corporate: <chuckl@netscape.com>
> personal: <chucklever@netscape.net> or <cel@monkey.org>
>
> The Linux Scalability project:
> http://www.citi.umich.edu/projects/linux-scalability/
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