From: Mark Lord <liml@rtr.ca>
To: albertl@mail.com
Cc: Jeff Garzik <jgarzik@pobox.com>,
IDE Linux <linux-ide@vger.kernel.org>,
Tejun Heo <htejun@gmail.com>, Doug Maxey <dwm@maxeymade.com>
Subject: Re: [PATCH 1/1] libata-dev: ata_check_atapi_dma() fix for ATA_FLAG_PIO_POLLING LLDDs
Date: Wed, 15 Mar 2006 11:12:10 -0500 [thread overview]
Message-ID: <44183CDA.5010407@rtr.ca> (raw)
In-Reply-To: <441838B6.8060900@rtr.ca>
[-- Attachment #1: Type: text/plain, Size: 995 bytes --]
Albert Lee wrote:
> Jeff Garzik wrote:
>
>> Applied, though I think its an open question what happens with
>> CDB-interrupt ATAPI devices want to do DMA. Perhaps we just get an
>> interrupt event that we clear, then life proceeds as normal.
>
> Not sure. I have no such device at hand for test; currently relying
> on the SFF-8020i spec (http://www.bswd.com/sff8020i.pdf) as reference.
> According to p.31, we have to send out the CDB after receiving
> the CDB interrupt. So, just clearing the irq looks not enough.
>
>> Does anybody actually have such a device anywhere? :)
Yup, I have two such drives here.
One of them has a grease-pencil "NFG" marking on it,
and other other one doesn't. They both powered up and
worked just now, and their identify blobs are attached
(you can interpret them with "hdparm --Istdin <blob").
I'm late paying attention on this thread, so what is it
that we wanted done with them?
Or even better, who wants one of them? Albert, Jeff, or Tejun?
Cheers
[-- Attachment #2: aopen_936e_aku.identify --]
[-- Type: text/plain, Size: 1451 bytes --]
/dev/hdd:
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
85a0 0000 0000 0000 0000 0000 0000 0000
0000 0000 2020 2020 2020 2020 2020 2020
2020 2020 2020 2020 0000 0000 0000 5531
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2f41 4b55 2020 2020 2020 2020 2020 2020
2020 2020 2020 2020 2020 2020 2020 0000
0000 0f00 0000 0400 0200 0006 0000 0000
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[-- Attachment #3: aopen_940e_aku.identify --]
[-- Type: text/plain, Size: 1451 bytes --]
/dev/hdc:
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
85a0 0000 0000 0000 0000 0000 0000 0000
0000 0000 2020 2020 2020 2020 2020 2020
2020 2020 2020 2020 0000 0000 0000 5533
3120 2020 2020 4344 2d52 4f4d 2034 3058
2f41 4b55 2020 2020 2020 2020 2020 2020
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0000 0f00 0000 0400 0200 0006 0000 0000
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next prev parent reply other threads:[~2006-03-15 16:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-13 7:57 [PATCH 1/1] libata-dev: ata_check_atapi_dma() fix for ATA_FLAG_PIO_POLLING LLDDs Albert Lee
2006-03-13 8:09 ` Jeff Garzik
2006-03-14 4:52 ` Albert Lee
2006-03-15 15:54 ` Mark Lord
2006-03-15 16:12 ` Mark Lord [this message]
2006-03-15 16:24 ` Mark Lord
2006-03-16 7:22 ` Albert Lee
2006-03-17 5:51 ` Mark Lord
2006-03-15 16:49 ` Mark Lord
2006-04-01 13:24 ` Albert Lee
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