From: Tuomas Vainikka <tuomas.vainikka@aalto.fi>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michael Schmitz <schmitzmic@gmail.com>,
Linux/m68k <linux-m68k@vger.kernel.org>,
linux-scsi@vger.kernel.org, David Miller <davem@davemloft.net>
Subject: esp_scsi QTAG in FAS216 (was Re: [PATCH 0/2] Experimental Amiga Zorro ESP driver)
Date: Thu, 12 Sep 2013 18:36:09 +0300 [thread overview]
Message-ID: <5231DF69.6070807@aalto.fi> (raw)
In-Reply-To: <CAMuHMdUH=9sv-Vb3ZTAGyfvEQOO0x0x1cUYhfd7040k8d+bSYg@mail.gmail.com>
On 09/11/2013 05:48 PM, Geert Uytterhoeven wrote:
> On Wed, Sep 11, 2013 at 12:12 PM, Michael Schmitz <schmitzmic@gmail.com> wrote:
>>> problem. Using PIO, only the first byte of the tag message comes through. It
>>> might not be esp_scsi's fault, but there seems to be an assumption that all
>>> devices support TCQ. Also, no SCSI-2 features seem to be enabled in the chip
>>> by esp_scsi.
>> I'd have to check with DaveM, but such an assumption might in fact exist.
> BTW, it would be nice to start CCing linux-scsi@vger.kernel.org and
> David S. Miller <davem@davemloft.net> on future discussions.
>
> Gr{oetje,eeting}s,
>
> Geert
>
>
Hello,
Does anyone have the register descriptions for the FAS216 chip? It would
seem that receiving only one byte during reconnect is perfectly normal
[1] unless SCSI-2 features are explicitly enabled (which esp_scsi
doesn't seem to be doing).
Also, looking at the timeout formulae in the old NCR53C9x.c driver, the
values would be different for FAS216. Why was this dropped from the
modern esp_scsi?
1. Page 2 in http://www.datasheetarchive.com/dl/Scans-030/ScansU9X12569.pdf
-Tuomas
next parent reply other threads:[~2013-09-12 15:36 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
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2013-09-12 15:36 ` Tuomas Vainikka [this message]
2013-09-26 13:50 ` esp_scsi QTAG in FAS216 (was Re: [PATCH 0/2] Experimental Amiga Zorro ESP driver) Michael Schmitz
2014-04-04 20:28 ` esp_scsi QTAG in FAS216 David Miller
2014-04-06 20:33 ` Michael Schmitz
2014-04-07 3:39 ` David Miller
2014-04-10 14:31 ` Kars de Jong
2014-04-11 1:47 ` Michael Schmitz
2014-04-13 14:47 ` Kars de Jong
2014-04-13 22:38 ` Michael Schmitz
2014-04-14 2:14 ` David Miller
2014-04-14 5:05 ` Tuomas Vainikka
2014-04-14 8:51 ` Michael Schmitz
2014-05-25 8:56 ` Geert Uytterhoeven
2014-05-26 1:15 ` Michael Schmitz
2014-04-14 9:01 ` Michael Schmitz
2014-05-04 11:41 ` Tuomas Vainikka
2016-10-28 21:54 ` Finn Thain
2016-10-30 2:33 ` Finn Thain
2016-10-31 8:03 ` Michael Schmitz
2016-10-31 18:54 ` Michael Schmitz
2016-10-31 23:47 ` Finn Thain
2016-11-01 7:09 ` Michael Schmitz
2016-11-01 7:23 ` Finn Thain
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