From: Jeremy Higdon <jeremy@sgi.com>
To: Andrew Vasquez <andrew.vasquez@qlogic.com>
Cc: Matthew Wilcox <matthew@wil.cx>,
James Bottomley <James.Bottomley@SteelEye.com>,
Jesse Barnes <jbarnes@engr.sgi.com>,
Grant Grundler <grundler@parisc-linux.org>,
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, Andrew Morton <akpm@osdl.org>
Subject: Re: SCSI QLA not working on latest *-mm SN2
Date: Tue, 21 Sep 2004 14:44:34 -0700 [thread overview]
Message-ID: <20040921214434.GH146363@sgi.com> (raw)
In-Reply-To: <B179AE41C1147041AA1121F44614F0B0DD04E5@AVEXCH02.qlogic.org>
On Tue, Sep 21, 2004 at 02:22:48PM -0700, Andrew Vasquez wrote:
> On Tuesday, September 21, 2004 2:06 PM, Jeremy Higdon wrote:
> > On Tue, Sep 21, 2004 at 01:50:02PM -0700, Andrew Vasquez wrote:
> > > The only requirement after reception of a soft-reset request (by PIO
> > > or MMIO) by the RISC is for the driver to wait 16 PCI clocks before
> > > issuing another request. The problem of course is determining when
> > > to start timing within the driver.
> >
> > So I think that we just wait for some reasonable worst case time for
> > the write to complete. We can't really do anything else.
> >
>
> That seems to be the case.
>
> > Are these resets done as part of error recovery? I.e., do we have
> > to be concerned about long the write will take on a busy system?
> >
>
> Just during initialization (qla2x00_chip_diag() and qla2x00_setup_chip())
> and after a firmware dump (qla_dbg.c -- which requires a full
> re-initialization to recover). If the driver is in the process of
> performing a firmware-dump, the RISC has already been paused and nothing
> is executing within the firmware.
>
> --
> Andrew
Well then 10us should be plenty of time. Maybe 20 just to be extra sure.
jeremy
next prev parent reply other threads:[~2004-09-21 21:44 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-21 21:22 SCSI QLA not working on latest *-mm SN2 Andrew Vasquez
2004-09-21 21:44 ` Jeremy Higdon [this message]
2004-09-21 22:37 ` Jesse Barnes
2004-09-21 22:49 ` Jeremy Higdon
-- strict thread matches above, loose matches on Subject: below --
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
2004-09-17 22:55 Andrew Vasquez
2004-09-17 23:10 ` Jesse Barnes
2004-09-17 23:55 ` James Bottomley
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
[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
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