From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
randy_d_dunlap@linux.intel.com, linux-ide@vger.kernel.org,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
acpi-devel@lists.sourceforge.net
Subject: Re: RFC: ACPI/scsi/libata integration and hotswap
Date: Sat, 10 Dec 2005 02:47:51 +0000 [thread overview]
Message-ID: <20051210024750.GA31328@srcf.ucam.org> (raw)
In-Reply-To: <439A3FD9.40308@pobox.com>
On Fri, Dec 09, 2005 at 09:39:21PM -0500, Jeff Garzik wrote:
> Matthew Garrett wrote:
> >On Fri, Dec 09, 2005 at 07:40:08PM -0500, Jeff Garzik wrote:
> >
> >
> >>ICH6 and ICH7 support it just fine, through the normal SATA PHY
> >>registers. ICH5 only support it if you are clever :)
> >
> >
> >ICH6 supports it even in non-AHCI mode? You may want to update the
> >website, then :)
>
> Yes, its a bit outdated. I just found out that ICH6/7 supports access
> to SATA PHY registers even in non-AHCI mode.
Oh, cool. That makes life a /lot/ easier - most laptops I've seen using
SATA are ICH6, so excellent!
> >>Further, although one can detect hot-unplug on ICH5, hotplug is probably
> >>not detectable without polling or SMI.
> >
> >
> >ACPI allows us to detect hotplug on ICH5, which sounds like a good
> >argument for its inclusion.
>
> One special case (ICH5 hotplug, but not ICH5 hot unplug), when all other
> cases are handled in the normal way?
>
> That's not a good argument at all.
Well, we could always just add it to ata_piix and leave it out of the
acpi and scsi layers. I've no great atachment to ACPI - I just want this
stuff to work :) Basically, ACPI gives us the possibility of making
hotplug/unplug work on hosts that don't otherwise support it under a
limited set of conditions. I think that's worthwhile, especially if it
can be done in a way that doesn't introduce hugely ugly stuff to the
rest of the kernel.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2005-12-10 2:48 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-08 3:02 RFC: ACPI/scsi/libata integration and hotswap Matthew Garrett
2005-12-08 9:15 ` Christoph Hellwig
2005-12-08 13:26 ` Matthew Garrett
2005-12-08 13:33 ` Christoph Hellwig
2005-12-08 13:39 ` Matthew Garrett
2005-12-08 13:44 ` Christoph Hellwig
2005-12-08 17:18 ` Erik Slagter
2005-12-08 20:43 ` Jeff Garzik
2005-12-08 21:03 ` Dominic Ijichi
2005-12-08 21:09 ` Jeff Garzik
2005-12-08 21:34 ` Dominic Ijichi
2005-12-08 21:31 ` Randy Dunlap
2005-12-09 9:45 ` Erik Slagter
2005-12-09 10:39 ` Jens Axboe
2005-12-09 10:45 ` Erik Slagter
2005-12-09 11:27 ` Jeff Garzik
2005-12-09 11:35 ` Erik Slagter
2005-12-09 11:40 ` Christoph Hellwig
2005-12-09 11:46 ` Jens Axboe
2005-12-09 11:55 ` Matthew Garrett
2005-12-09 13:22 ` Bartlomiej Zolnierkiewicz
2005-12-09 12:01 ` Erik Slagter
2005-12-09 12:07 ` Jens Axboe
2005-12-10 2:19 ` Douglas Gilbert
2005-12-14 20:52 ` [ACPI] " Matthew Wilcox
2005-12-09 11:30 ` Jens Axboe
2005-12-09 3:28 ` Mark Lord
2005-12-09 11:29 ` Jeff Garzik
2005-12-10 4:01 ` Mark Lord
2005-12-08 13:52 ` Jeff Garzik
2005-12-08 14:07 ` [ACPI] " Alan Cox
2005-12-08 14:14 ` Jeff Garzik
2005-12-08 14:30 ` Alan Cox
2005-12-08 14:43 ` Matthew Garrett
2005-12-08 14:53 ` Alan Cox
2005-12-09 11:42 ` Jeff Garzik
2005-12-08 14:12 ` Matthew Garrett
2005-12-08 14:01 ` Alan Cox
2005-12-08 14:18 ` Matthew Garrett
2005-12-08 14:33 ` Alan Cox
2005-12-08 14:52 ` Matthew Garrett
2005-12-08 14:55 ` Alan Cox
2005-12-08 17:19 ` Matthew Garrett
2005-12-09 11:42 ` Christoph Hellwig
2005-12-09 11:49 ` Jeff Garzik
2005-12-09 11:52 ` Matthew Garrett
2005-12-09 11:58 ` Jeff Garzik
2005-12-09 12:11 ` Matthew Garrett
2005-12-09 12:16 ` Jeff Garzik
2005-12-09 12:24 ` Matthew Garrett
2005-12-10 0:40 ` Jeff Garzik
2005-12-10 2:34 ` Matthew Garrett
2005-12-10 2:39 ` Jeff Garzik
2005-12-10 2:47 ` Matthew Garrett [this message]
2005-12-10 2:41 ` Jeff Garzik
2005-12-10 2:50 ` Matthew Garrett
2005-12-10 2:57 ` Jeff Garzik
2005-12-10 3:47 ` [ACPI] " Andrew Grover
2005-12-12 0:38 ` Alan Cox
2005-12-09 11:50 ` Matthew Garrett
2005-12-09 11:55 ` Christoph Hellwig
2005-12-13 18:14 ` Randy Dunlap
2005-12-13 18:26 ` Matthew Garrett
2005-12-13 19:07 ` Randy Dunlap
2005-12-08 13:57 Salyzyn, Mark
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