From: Johannes Erdfelt <johannes@erdfelt.com>
To: "David S. Miller" <davem@redhat.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, linux-kernel@vger.kernel.org
Subject: Re: struct page to 36 (or 64) bit bus address?
Date: Thu, 9 Aug 2001 16:35:32 -0400 [thread overview]
Message-ID: <20010809163531.D1575@sventech.com> (raw)
In-Reply-To: <20010809151022.C1575@sventech.com> <E15UvLO-0007tH-00@the-village.bc.nu> <15218.61869.424038.30544@pizda.ninka.net>
In-Reply-To: <15218.61869.424038.30544@pizda.ninka.net>; from davem@redhat.com on Thu, Aug 09, 2001 at 01:25:17PM -0700
On Thu, Aug 09, 2001, David S. Miller <davem@redhat.com> wrote:
>
> Alan Cox writes:
> > > Obviously the more portable way across architectures is using the PCI
> > > DMA API but when will the implementation be fixed so I can use it to
> > > exploit the full potential of this device?
> >
> > 2.5 I believe, ping the peacefrog and ask <DaveM@redhat.com>
>
> That's the current plan. There may be a 2.4.x backport, but no
> promises. It all depends upon how straightforward the changes
> are.
It's not a big deal. It's just less efficient which isn't the end of the
world.
> Note, if you use the "bttv method" (ie. virt_to_bus) your driver will
> then fail to compile on several platforms.
So noted. I already have a PCI DMA API version, but I wanted to code up
a "i have an i386 and gigs of memory" version as well.
JE
next prev parent reply other threads:[~2001-08-09 20:38 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-09 18:40 struct page to 36 (or 64) bit bus address? Johannes Erdfelt
2001-08-09 19:09 ` Alan Cox
2001-08-09 19:10 ` Johannes Erdfelt
2001-08-09 19:19 ` Alan Cox
2001-08-09 20:25 ` David S. Miller
2001-08-09 20:35 ` Johannes Erdfelt [this message]
2001-08-10 7:00 ` Gerd Knorr
2001-08-10 7:56 ` Johannes Erdfelt
2001-08-10 21:58 ` David S. Miller
2001-08-11 7:09 ` Gerd Knorr
2001-08-12 10:49 ` Write Combining (Write Coalescing) on memory mapped I/O on IA64 Steffen Persvold
2001-08-11 15:32 ` struct page to 36 (or 64) bit bus address? Jens Axboe
2001-08-11 15:56 ` Andrea Arcangeli
2001-08-11 16:13 ` Sandy Harris
2001-08-12 8:00 ` David S. Miller
[not found] <no.id>
2001-08-12 11:49 ` Alan Cox
2001-08-13 13:51 ` David S. Miller
2001-08-13 14:09 ` Alan Cox
2001-08-13 14:21 ` David S. Miller
2001-08-13 19:07 ` Gérard Roudier
2001-08-13 19:42 ` David S. Miller
2001-08-13 15:10 ` Alan Cox
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