Date: Sun, 19 May 2002 16:12:54 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: "Kenneth D. Merry" <ken@kdm.org> Cc: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/cam/scsi scsi_da.c Message-ID: <200205192312.g4JNCsKs098352@apollo.backplane.com> References: <200205192159.g4JLxSx22676@freefall.freebsd.org> <20020519170221.A51589@panzer.kdm.org>
next in thread | previous in thread | raw e-mail | index | archive | help
:We have code to detect devices that don't work with 6 byte commands; a
:quirk shouldn't be necessary.
:
:What error does this device return when you issue a 6 byte command?
:
:Ken
:--
:Kenneth Merry
:ken@kdm.org
It returns a general I/O error, but the CAM debug code does not
report any errors.
I was not able to test the USB device under -current at all... none
of my current machines are running a USB chipset that either -current
or -stable is happy with, so I cannot refute your assertion on -current.
Still, -current has the NO_6 quirks for all the other USB card readers
so presumably it is still required.
On -stable it is definitely required.
The real issue here is not so much the SCSI spec... these are not
actual SCSI devices, they are pseudo-SCSI devices and there are a lot
of things missing or hacked or just plain broken in regards to their
adherence to either the SCSI or ATA specs. I'm certain the reason
CAM/SCSI cannot figure out that a 10 byte command is required for
these devices is simply due to that fact.
-Matt
Matthew Dillon
<dillon@backplane.com>
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200205192312.g4JNCsKs098352>