[6387] in linux-scsi channel archive
Re: NCR53c875
daemon@ATHENA.MIT.EDU (Gerard Roudier)
Thu Apr 22 16:26:07 1999
Date: Thu, 22 Apr 1999 22:02:01 +0200 (MET DST)
From: Gerard Roudier <groudier@club-internet.fr>
To: Robert Johannes <rjohanne@piper.hamline.edu>
cc: linux-scsi <linux-scsi@vger.rutgers.edu>
In-Reply-To: <Pine.GSO.4.10.9904210915270.7564-100000@kovalevskaya.hamline.edu>
On Wed, 21 Apr 1999, Robert Johannes wrote:
> I've a DC-390F with the ncr53c875 chipset on it, running on a an amd
> k6-3dnow, and a seagate 9gig ST39173WC drive hooked up to it, and I've
> successfully installed redhat 5.2 (from Nov 98) and this is what it does
> during boot up:
>
> It detects the controller during boot up, and detects the drive, but then
> starts doing this:
>
> NCR53c875-0: Copying script fragments into the on-board RAM
> NCR53c875-0: command processing resumed
> NCR53c875-0:-<0,0>: WIDE SCSI (16 bit) enabled.
> NCR53c875-0:-<0,0>: FAST-20 SCSI 40.0MBS (100NS, offset15)
Could you confirm it is 100NS (should be 50 ns).
> NCR53c875-0:0: ERROR (0:18) (1-21-4) (f/3d) @ (script e60 : 19000000)
0x18 -> bit 8 in SIST --> SCSI GROSS ERROR
Such a error just after FAST-20 data transfer negotiation is likely
due to a broken SCSI BUS. You may want to:
1) Check your SCSI BUS (cables, device position, terminators)
2) Give a try with a conservative settings, for example 8 bit SCSI,
5 MB/s.
If (2) works on your system without having changed anything on your SCSI
BUS, then it is about sure, your SCSI BUS is not properly set.
> NCR53c875-0: script cmd = 89030000
> NCR53c875-0: regdump da 10 80 3d 47 0f 00 0e 03 01 80 21 80 00 01 19
> NCR53c875-0: have to clear fifos
> NCR53C875-0: resetting, command processing suspended for 2 seconds
> NCR53C875-0: restart (scsi reset)
> NCR53C875-0; enabling clock multiplier
> NCR53C875-0: copying script fragments into the on-board RAM
>
> .....
> And loops again again again, each time changing the line above reading:
> "ERROR (0:18) (1-21-4) ...." to some thing else.
Could you give a brief description of your SCSI BUS.
You write you are using redhat 5.2. By the way, I am using a pair of
braunshoes 44 and haven't had any problem with. :-))
For driver upgrade, you may want to have a look at:
ftp://ftp.tux.org/pub/roudier/drivers/linux/sym53c8xx/
Gérard.
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