From: Jeff Garzik <jgarzik@pobox.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>,
"linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
Albert Lee <albertcc@tw.ibm.com>
Subject: Re: PATA drivers in libata?
Date: Sun, 13 Feb 2005 19:16:38 -0500 [thread overview]
Message-ID: <420FEDE6.20904@pobox.com> (raw)
In-Reply-To: <1108334326.19353.20.camel@localhost.localdomain>
Alan Cox wrote:
> On Sul, 2005-02-13 at 18:51, Jeff Garzik wrote:
>
>>libata-dev now has two drivers that support PATA, pata_pdc2027x and
>>ata_piix, and the core is getting close (DMA blacklist in, C/H/S support
>>close).
>
>
> Do you have DMA change down sorted - CRC error, drop speed and/or switch
> to PIO then later flip back. Thats one real horror to get right and one
> thats badly screwy in the current IDE code (-ac IDE can hang the box for
> ages, base will sometimes crash)
Error handling is -very- stupid simple right now: if we get an error,
report that error in the struct request [based on your ATA -> SCSI sense
conversion] back to upper layer.
It needs to be fleshed out into separate host bus / ATA bus / device
errors, and handled accordingly.
Jeff
next prev parent reply other threads:[~2005-02-14 0:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-13 18:51 PATA drivers in libata? Jeff Garzik
2005-02-13 21:12 ` Mark Hahn
2005-02-13 22:01 ` Jeff Garzik
2005-02-14 0:19 ` Doug Maxey
2005-02-14 0:25 ` Jeff Garzik
2005-02-13 22:38 ` Alan Cox
2005-02-14 0:16 ` Jeff Garzik [this message]
2005-02-14 20:42 ` Alan Cox
2005-02-17 1:13 ` Benjamin Herrenschmidt
2005-02-17 1:11 ` Benjamin Herrenschmidt
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