From: Erik Slagter <erik@slagter.name>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org,
Jens Axboe <axboe@suse.de>
Subject: Re: Playing with SATA NCQ
Date: Sun, 29 May 2005 19:23:52 +0200 [thread overview]
Message-ID: <1117387432.4851.13.camel@localhost.localdomain> (raw)
In-Reply-To: <4299F4E2.4020305@pobox.com>
On Sun, 2005-05-29 at 12:59 -0400, Jeff Garzik wrote:
> >>Nope. ata_piix does not support NCQ (because the h/w doesn't support).
> > If I understand this correctly: NCQ does not work on ICH7 in native mode
> > (using ata_piix) because in this mode there is no NCQ available, right?
>
> To be more specific, there are these modes:
>
> legacy mode no NCQ
> combined mode no NCQ
> native mode no NCQ
> AHCI mode NCQ
Thx.
> > My question was if there is a fundamental reason why the AHCI mode of
> > the ICH6/7 must be enabled by the BIOS, is there a reason why the kernel
> > doesn't do it, or can't do it?
>
> The BIOS sets up PCI resources necessary to use AHCI mode.
Ok. So there's absolutely no way to do that afterwards? It'd really be a
pity :-(
On the same subject: is there a reason why ICH6 gets "BAR0-3 ignored"
and always gets the legacy i/o ports and IRQ's assigned? I'd say there
is absolutely no need to be compatible in this way, the PCI code can
assign the IRQ and I/O ports as with any other PCI device?
next prev parent reply other threads:[~2005-05-29 17:24 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-26 14:00 Playing with SATA NCQ Jens Axboe
2005-05-26 16:25 ` Jeff Garzik
2005-05-26 17:07 ` Jens Axboe
2005-05-26 17:11 ` Jens Axboe
2005-05-26 17:15 ` Jeff Garzik
2005-05-26 17:33 ` Jens Axboe
2005-05-26 19:49 ` Jeff Garzik
2005-05-26 20:30 ` Jens Axboe
2005-05-27 7:20 ` Jens Axboe
2005-05-27 7:29 ` Jeff Garzik
2005-05-27 7:33 ` Jens Axboe
2005-05-27 7:51 ` Jeff Garzik
2005-05-27 8:00 ` Jens Axboe
2005-05-27 8:23 ` Jeff Garzik
2005-05-26 21:50 ` Mark Lord
2005-05-27 6:28 ` Jens Axboe
2005-05-27 6:58 ` Jeff Garzik
2005-05-27 7:15 ` Jens Axboe
2005-05-27 4:41 ` Jeff Garzik
2005-05-27 6:39 ` Jens Axboe
2005-05-27 21:40 ` Michael Thonke
2005-05-27 22:16 ` Jeff Garzik
2005-05-27 22:30 ` Michael Thonke
2005-05-28 12:12 ` Jens Axboe
2005-05-29 13:01 ` Michael Thonke
2005-05-29 14:09 ` Mark Lord
2005-05-29 14:24 ` Tyler
2005-05-29 15:22 ` Eric D. Mudama
2005-05-29 19:04 ` Jens Axboe
2005-05-29 19:05 ` Jeff Garzik
2005-05-29 19:21 ` Jens Axboe
2005-05-29 19:03 ` Jens Axboe
2005-05-29 20:12 ` Michael Thonke
2005-05-29 20:17 ` Jeff Garzik
2005-05-30 6:05 ` Jens Axboe
2005-05-30 6:07 ` Jens Axboe
2005-05-29 18:10 ` Michael Thonke
2005-05-29 19:06 ` Jens Axboe
2005-05-29 16:03 ` Erik Slagter
2005-05-29 16:34 ` Jeff Garzik
2005-05-29 16:50 ` Erik Slagter
2005-05-29 16:59 ` Jeff Garzik
2005-05-29 17:23 ` Erik Slagter [this message]
2005-05-29 17:29 ` Jeff Garzik
2005-05-29 17:45 ` Erik Slagter
2005-05-29 18:01 ` Jeff Garzik
2005-05-29 18:10 ` Erik Slagter
2005-05-29 18:14 ` Jeff Garzik
2005-05-29 18:27 ` Michael Thonke
2005-05-29 18:31 ` Jeff Garzik
2005-05-29 16:57 ` Michael Thonke
2005-05-29 17:26 ` Erik Slagter
2005-05-30 0:06 ` Mark Lord
2005-05-30 7:29 ` Erik Slagter
2005-05-30 18:09 ` Mark Lord
2005-05-30 18:22 ` Erik Slagter
2005-05-30 18:25 ` Mark Lord
2005-05-30 18:34 ` Michael Thonke
2005-05-30 18:51 ` Jeff Garzik
2005-05-30 18:48 ` Jeff Garzik
2005-05-30 18:50 ` Jeff Garzik
2005-05-30 20:03 ` Erik Slagter
2005-05-30 20:19 ` Jeff Garzik
2005-05-31 7:44 ` Erik Slagter
2005-05-30 23:14 ` Mark Lord
2005-05-31 7:48 ` Erik Slagter
2005-05-31 8:05 ` Patrick McFarland
2005-05-29 21:49 ` Michael Thonke
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1117387432.4851.13.camel@localhost.localdomain \
--to=erik@slagter.name \
--cc=axboe@suse.de \
--cc=jgarzik@pobox.com \
--cc=linux-ide@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).