From: James Bottomley <James.Bottomley@SteelEye.com>
To: Andrew Vasquez <andrew.vasquez@qlogic.com>
Cc: Jeremy Higdon <jeremy@sgi.com>,
Jesse Barnes <jbarnes@engr.sgi.com>, Paul Jackson <pj@sgi.com>,
SCSI Mailing List <linux-scsi@vger.kernel.org>,
mdr@cthulhu.engr.sgi.com, jeremy@cthulhu.engr.sgi.com,
djh@cthulhu.engr.sgi.com, jbarnes@cthulhu.engr.sgi.com,
Andrew Morton <akpm@osdl.org>
Subject: RE: SCSI QLA not working on latest *-mm SN2
Date: 17 Sep 2004 19:55:24 -0400 [thread overview]
Message-ID: <1095465337.1944.3.camel@mulgrave> (raw)
In-Reply-To: <B179AE41C1147041AA1121F44614F0B0DD04CA@AVEXCH02.qlogic.org>
On Fri, 2004-09-17 at 18:55, Andrew Vasquez wrote:
> The reads are there to ensure ordering of the writes at each stage of
> the reset (in qla_init.c) and fw dumps (qla_dbg.c). After speaking
> with the hardware and firmware folks, the readw() after the
> soft-reset in qla_init.c was probably what triggered the MCA. Seems
> we will have to settle for some sort of udelay() as what was done in
> reset_chip().
Just to confirm if we absolutely have to do this...the offending reads
to issue the posting flush were to the register you just wrote to to get
the chip to reset. However, any MMIO read to any region of that card
would also trigger a posted write flush. Does the chip drop entirely
off the PCI bus during the execution of reset, or could we perhaps issue
an innocuous read to somewhere in PCI configuration space for the card?
James
next prev parent reply other threads:[~2004-09-17 23:56 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-17 22:55 SCSI QLA not working on latest *-mm SN2 Andrew Vasquez
2004-09-17 23:10 ` Jesse Barnes
2004-09-17 23:55 ` James Bottomley [this message]
2004-09-18 1:15 ` Andrew Vasquez
2004-09-18 1:25 ` Matthew Wilcox
2004-09-18 1:24 ` Andrew Vasquez
2004-09-18 2:36 ` Jeremy Higdon
2004-09-18 19:12 ` James Bottomley
-- strict thread matches above, loose matches on Subject: below --
2004-09-21 21:22 Andrew Vasquez
2004-09-21 21:44 ` Jeremy Higdon
2004-09-21 22:37 ` Jesse Barnes
2004-09-21 22:49 ` Jeremy Higdon
2004-09-21 20:50 Andrew Vasquez
2004-09-21 21:06 ` Jeremy Higdon
2004-09-21 22:36 ` Jesse Barnes
2004-09-21 22:39 ` Jeremy Higdon
2004-09-21 22:43 ` Jesse Barnes
2004-09-21 22:54 ` Jeremy Higdon
2004-09-21 23:17 ` Jesse Barnes
2004-09-22 21:33 ` Jesse Barnes
2004-09-21 17:33 Andrew Vasquez
2004-09-21 17:52 ` Jesse Barnes
2004-09-21 18:04 ` Matthew Wilcox
2004-09-21 18:59 ` Matthew Wilcox
2004-09-21 19:10 ` Jesse Barnes
2004-09-21 15:58 Andrew Vasquez
2004-09-21 16:07 ` Jesse Barnes
2004-09-21 16:25 ` Matthew Wilcox
2004-09-21 16:33 ` James Bottomley
2004-09-21 20:39 ` Jeremy Higdon
2004-09-21 20:43 ` Jeremy Higdon
[not found] <B179AE41C1147041AA1121F44614F0B060EF48@AVEXCH02.qlogic.org>
[not found] ` <20040916121235.5e4f9c32.pj@sgi.com>
[not found] ` <1095362263.16326.12.camel@praka>
2004-09-16 19:56 ` Paul Jackson
2004-09-16 20:05 ` Jesse Barnes
2004-09-16 20:56 ` Andrew Vasquez
2004-09-16 21:09 ` Jesse Barnes
2004-09-16 21:40 ` Andrew Vasquez
2004-09-16 22:25 ` Andrew Morton
2004-09-16 22:29 ` Jesse Barnes
2004-09-17 17:21 ` Jesse Barnes
2004-09-18 6:10 ` Grant Grundler
2004-09-20 22:40 ` Jesse Barnes
2004-09-20 23:27 ` Grant Grundler
2004-09-21 0:09 ` Jesse Barnes
2004-09-21 5:46 ` Grant Grundler
2004-09-21 6:45 ` Jeremy Higdon
2004-09-21 13:29 ` Jesse Barnes
2004-09-21 13:25 ` Jesse Barnes
2004-09-21 15:13 ` Jesse Barnes
2004-09-21 15:41 ` James Bottomley
2004-09-21 15:58 ` Jesse Barnes
2004-09-21 16:01 ` Matthew Wilcox
2004-09-21 16:05 ` Jesse Barnes
2004-09-21 16:11 ` James Bottomley
2004-09-21 16:18 ` Jesse Barnes
2004-09-21 16:24 ` James Bottomley
2004-09-21 17:03 ` Jesse Barnes
2004-09-21 17:15 ` Matthew Wilcox
2004-09-21 17:24 ` Jesse Barnes
2004-09-21 17:20 ` James Bottomley
2004-09-21 17:46 ` Jesse Barnes
2004-09-21 17:56 ` James Bottomley
2004-09-21 18:09 ` Jesse Barnes
2004-09-21 19:06 ` Grant Grundler
2004-09-21 19:40 ` Jesse Barnes
2004-09-21 22:44 ` Grant Grundler
2004-09-21 21:03 ` Jeremy Higdon
2004-09-21 21:11 ` Matthew Wilcox
2004-09-21 21:43 ` Jeremy Higdon
2004-09-21 22:33 ` Jesse Barnes
2004-09-22 0:02 ` Matthew Wilcox
2004-09-22 1:16 ` Jeremy Higdon
2004-09-22 1:44 ` Grant Grundler
2004-09-22 2:58 ` Jeremy Higdon
2004-09-21 23:03 ` Guennadi Liakhovetski
2004-09-16 23:14 ` Jeremy Higdon
2004-09-16 20:11 ` Andrew Morton
2004-09-15 22:51 Paul Jackson
2004-09-15 23:13 ` Andrew Morton
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1095465337.1944.3.camel@mulgrave \
--to=james.bottomley@steeleye.com \
--cc=akpm@osdl.org \
--cc=andrew.vasquez@qlogic.com \
--cc=djh@cthulhu.engr.sgi.com \
--cc=jbarnes@cthulhu.engr.sgi.com \
--cc=jbarnes@engr.sgi.com \
--cc=jeremy@cthulhu.engr.sgi.com \
--cc=jeremy@sgi.com \
--cc=linux-scsi@vger.kernel.org \
--cc=mdr@cthulhu.engr.sgi.com \
--cc=pj@sgi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).