From: Pat LaVarre <p.lavarre@ieee.org>
To: linux-ide@vger.kernel.org
Subject: Re: [PATCH] atapi request sense work
Date: 21 May 2004 17:12:01 -0600 [thread overview]
Message-ID: <1085181121.3266.6.camel@patibmrh9> (raw)
In-Reply-To: <40AE79E1.9020005@pobox.com>
For the record, ...
As of linux-2.6.6-bk8 plus my bk8.good.always.patch, ...
Commands that repeatably often DO complete rapidly include the
following. Looks like we die only in Do < Ho (positive residue out) and
Dn = Hn (thin diagonal no data).
Anybody who can make time to learn USB jargon could start with the
Glossary at the end, the rest of you can delete the comments or indeed
all of this post and read only the jargon-free discussions of specific
trouble which follow.
Enjoy, Pat LaVarre
# Setup
export PLSCSI='/dev/sg0 -X time 5 0'
# Di == Hi // thin diagonal in
plscsi -i x24 -x "12 00:00:00 24 00" // "INQUIRY"
plscsi -i x800 -x "28 00 00:00:00:10 00 00:01 00" // "READ"
plscsi -i x20000 -x "28 00 00:00:00:00 00 00:40 00"
# Dn < Hi // max positive residue in
plscsi -i x24 -x "12 00:00:00 00 00"
plscsi -i x24 -x "00 00:00:00 00 00" // "TEST UNIT READY"
plscsi -i x800 -x "28 00 00:00:00:10 00 00:00 00"
plscsi -i x20000 -x "28 00 00:00:00:00 00 00:00 00"
# Di < Hi // positive residue in
plscsi -i xC0 -x "12 00:00:00 24 00"
plscsi -i x1000 -x "28 00 00:00:00:10 00 00:01 00"
# Do == Ho // thin diagonal out
plscsi -o x24 -x "3B 02 00:00:00:00 00 00:24 00" // optional "WRITE BUFFER"
plscsi -o x800 -x "2A 00 00:00:00:10 00 00:01 00" // "WRITE"
plscsi -o x20000 -x "2A 00 00:00:00:00 00 00:40 00"
# Dn < Ho // max positive residue out
plscsi -o x24 -x "00 00:00:00 00 00"
plscsi -o x800 -x "2A 00 00:00:00:10 00 00:00 00"
plscsi -o x20000 -x "2A 00 00:00:00:00 00 00:00 00"
# Glossary:
"The thirteen cases" are shown in the table:
http://images.google.com/images?q=Pat+LaVarre
http://members.aol.com/plscsi/20000125/13cases.gif
"The thirteen cases" are the thirteen commonly distinct combinations of:
Hn is an abbreviation for saying the Host expects to copy No data.
Hi is the nonzero count of data bytes the Host expects to copy In.
Ho is the nonzero count of data bytes the Host expects to copy Out.
Dn is an abbreviation for saying the Device actually agrees to copy No data.
Di is the nonzero count of data bytes the Device actually agrees to copy In.
Do is the nonzero count of data bytes the Device actually agrees to copy Out.
next prev parent reply other threads:[~2004-05-21 23:12 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-16 14:19 [PATCH] libata DMADIR support Pat LaVarre
2004-05-16 23:16 ` Jeff Garzik
2004-05-17 18:48 ` Pat LaVarre
2004-05-17 19:08 ` Jeff Garzik
2004-05-17 21:06 ` Pat LaVarre
2004-05-17 21:40 ` Jeff Garzik
2004-05-17 21:20 ` Pat LaVarre
2004-05-17 21:32 ` Jeff Garzik
2004-05-17 21:34 ` Jeff Garzik
2004-05-17 22:05 ` Pat LaVarre
2004-05-17 22:36 ` Jeff Garzik
2004-05-17 23:04 ` Pat LaVarre
2004-05-18 22:40 ` Pat LaVarre
2004-05-18 23:07 ` Pat LaVarre
2004-05-18 23:50 ` Jeff Garzik
2004-05-19 22:47 ` Pat LaVarre
2004-05-18 23:48 ` [PATCH] atapi request sense work Jeff Garzik
2004-05-19 20:35 ` Pat LaVarre
2004-05-19 22:19 ` Jeff Garzik
2004-05-19 22:24 ` Pat LaVarre
2004-05-19 22:27 ` Pat LaVarre
2004-05-19 22:54 ` Pat LaVarre
2004-05-21 1:58 ` Pat LaVarre
[not found] ` <6 E36A 11B-AACB-11D8-8B8A-003065635034@ieee.org>
2004-05-21 2:06 ` Pat LaVarre
2004-05-21 3:05 ` Pat LaVarre
2004-05-21 4:04 ` Jeff Garzik
[not found] ` <1 085153750.6103.33.camel@patibmrh9>
2004-05-21 15:35 ` Pat LaVarre
2004-05-21 15:46 ` Bartlomiej Zolnierkiewicz
2004-05-21 17:59 ` Pat LaVarre
2004-05-21 20:07 ` Pat LaVarre
2004-05-21 21:51 ` Jeff Garzik
2004-05-21 23:12 ` Pat LaVarre [this message]
2004-05-21 23:24 ` Pat LaVarre
2004-05-21 23:55 ` Jeff Garzik
2004-05-21 23:57 ` Pat LaVarre
2004-05-21 23:39 ` Pat LaVarre
2004-05-21 23:45 ` Jeff Garzik
2004-05-22 0:06 ` Pat LaVarre
2004-05-22 0:12 ` Pat LaVarre
2004-05-22 0:33 ` Pat LaVarre
2004-05-22 1:11 ` Pat LaVarre
2004-05-26 21:49 ` Pat LaVarre
2004-05-27 23:12 ` Pat LaVarre
2004-05-27 23:32 ` Jeff Garzik
2004-05-27 23:38 ` Pat LaVarre
2004-05-27 23:41 ` Jeff Garzik
2004-05-28 0:13 ` Pat LaVarre
2004-05-28 1:28 ` Pat LaVarre
2004-05-24 15:27 ` Pat LaVarre
2004-05-21 21:59 ` Pat LaVarre
2004-05-21 18:23 ` Danny Cox
2004-05-21 18:39 ` Bartlomiej Zolnierkiewicz
2004-05-21 18:55 ` [PATCH] kmalloc old_hwif Danny Cox
2004-05-21 19:00 ` [PATCH] atapi request sense work Danny Cox
2004-05-21 19:08 ` Bartlomiej Zolnierkiewicz
-- strict thread matches above, loose matches on Subject: below --
2004-05-21 18:45 dwm
2004-05-21 20:44 ` Pat LaVarre
2004-05-30 12:44 Pat LaVarre
2004-05-30 15:15 ` Pat LaVarre
2004-05-31 16:09 ` Pat LaVarre
2004-06-02 0:01 ` Pat LaVarre
2004-06-02 20:52 ` Pat LaVarre
2004-06-02 22:36 ` Pat LaVarre
2004-06-02 22:55 ` Jeff Garzik
2004-06-02 23:53 ` Pat LaVarre
2004-06-03 0:30 ` Pat LaVarre
2004-06-03 0:52 ` Jeff Garzik
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