[6611] in linux-scsi channel archive
JVC XR-W2010
daemon@ATHENA.MIT.EDU (Kurt Garloff)
Mon Jun 7 01:35:00 1999
Date: Mon, 7 Jun 1999 07:27:35 +0200
From: Kurt Garloff <garloff@suse.de>
To: Linux SCSI list <linux-scsi@vger.rutgers.edu>
Mail-Followup-To: Linux SCSI list <linux-scsi@vger.rutgers.edu>
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Hi,
has anybody experience with this device?
Vendor: JVC Model: XR-W2010 Rev: 1.51
Type: WORM ANSI SCSI revision: 02
I'm trying to support someone having this device.
It's not detected by the tmscsim/DC390 driver on the bus scan.
The bad thing about it: There's no such thing as a protocol error, Illegal
request or similar, but just a plain SELECTION TIMEOUT.
And it happens, no matter how long the driver waits after a SCSI BUS RESET,
before scanning the bus. Even "scsi add-single-device" won't work, later.
Setting the selection timeout to 400ms, did not help either.
On the other hand the device can be used with a Wind*ws driver. If Linux is
booted afterwrads and the driver prevented from issueing a SCSI BUS RESET,
the device is detected and works correctly.
Let's hope there are no error causing the mid-level code to issue a bus
reset ...
To me, it looks like a broken SCAM device: The SCAM aware Wind*ze driver
configures it as a SCAM slave device and then it works. A SCSI bus reset
causes this SCAM settings to be reset.
But: SCAM devices should basically act like normal SCSI devices on their
default ID (selectable by jumper), when not configured with SCAM selection
but selected with normal selection.
However, changing the jumper for ID selection on this device does not seem
to change anything.
Does anybody know more about this JVC?
TIA!
--=20
Kurt Garloff <garloff@suse.de> SuSE GmbH, N=FCrnberg, FRG
Linux kernel development; SCSI driver: DC390 (tmscsim/AM53C974)
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