From: Jan Evert van Grootheest <j.e.van.grootheest@caiway.nl>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: linux-ide@vger.kernel.org, bzolnier@gmail.com
Subject: Re: DMA on ht6560b?
Date: Mon, 18 Feb 2008 16:17:10 +0100 [thread overview]
Message-ID: <47B9A176.9020808@caiway.nl> (raw)
In-Reply-To: <20080218143003.39f22ca3@core>
Alan Cox wrote:
>> I think the ht6560b controller supports DMA.
>>
>
> The data sheet doesn't. It's a PIO controller capable of PIO4 with 32bit
> host to cpu transfers are best.
>
Hmm. But what do you then think that 2.2 did?
I mean it now does 1.15M/s and in 2.2 it would do ~4M/s with DMA on.
Were those perhaps ISA style DMA transfers (as opposed to BM-DMA)?
I really should compile a 2.2 with ht6560b support...
Thanks for answering, though, I don't know that much about ATA.
Jan Evert
next prev parent reply other threads:[~2008-02-18 15:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-18 14:13 DMA on ht6560b? Jan Evert van Grootheest
2008-02-18 14:30 ` Alan Cox
2008-02-18 15:17 ` Jan Evert van Grootheest [this message]
2008-02-18 15:43 ` Alan Cox
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=47B9A176.9020808@caiway.nl \
--to=j.e.van.grootheest@caiway.nl \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=bzolnier@gmail.com \
--cc=linux-ide@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).