From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Schmitz Subject: Re: esp_scsi QTAG in FAS216 (was Re: [PATCH 0/2] Experimental Amiga Zorro ESP driver) Date: Fri, 27 Sep 2013 01:50:19 +1200 Message-ID: <4d181bcc49b68321e8a1e16f2783fb19@gmail.com> References: <1370552199-15048-1-git-send-email-schmitz@debian.org> <520D4AE3.6040801@aalto.fi> <520E76FC.9040803@aalto.fi> <11425cb5ec432e2fbb7b675052e8b33d@gmail.com> <520F5F81.7090409@aalto.fi> <52102BEC.7000006@gmail.com> <52108CAF.1010700@gmail.com> <5211DBD8.5090801@gmail.com> <5212840A.4080300@aalto.fi> <1ef2d87e4efecb2d8c8c2eaf8ac5fd51@gmail.com> <52133E48.50501@aalto.fi> <522F8B67.2080603@aalto.fi> <5231DF69.6070807@aalto.fi> Mime-Version: 1.0 (Apple Message framework v624) Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-pd0-f172.google.com ([209.85.192.172]:35310 "EHLO mail-pd0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750761Ab3IZNul (ORCPT ); Thu, 26 Sep 2013 09:50:41 -0400 In-Reply-To: <5231DF69.6070807@aalto.fi> Sender: linux-m68k-owner@vger.kernel.org List-Id: linux-m68k@vger.kernel.org To: Tuomas Vainikka Cc: Geert Uytterhoeven , Linux/m68k , David Miller , linux-scsi@vger.kernel.org Tuomas, I might still have a copy of the manual somewhere from way back, if you haven't found it anywhere. Would be on an old disk or even hardcopy in storage, so please confirm you still need it. Cheers, Michael Am 13.09.2013 um 03:36 schrieb Tuomas Vainikka: > On 09/11/2013 05:48 PM, Geert Uytterhoeven wrote: >> On Wed, Sep 11, 2013 at 12:12 PM, Michael Schmitz >> 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 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