From: olof@lixom.net (Olof Johansson)
To: Christoph Hellwig <hch@infradead.org>
Cc: Francois Romieu <romieu@fr.zoreil.com>,
jgarzik@pobox.com, netdev@vger.kernel.org
Subject: Re: [PATCH] PA Semi PWRficient Ethernet driver
Date: Tue, 30 Jan 2007 09:34:09 -0600 [thread overview]
Message-ID: <20070130153409.GA25309@lixom.net> (raw)
In-Reply-To: <20070130100649.GB8548@infradead.org>
On Tue, Jan 30, 2007 at 10:06:49AM +0000, Christoph Hellwig wrote:
> On Mon, Jan 29, 2007 at 07:41:16PM -0600, Olof Johansson wrote:
> > Maybe a bit of introduction could be useful (also regarding the
> > pci_map/alloc comments below).
> >
> > Our devices are on-chip, and while they're not on a PCI(e) bus internally,
> > they do have config headers and will show up as devices on a pseudo-bus
> > (the root one, in fact).
> >
> > Also, while the driver could go through the IOMMU layers, there's no
> > real use in doing so at this time.
>
> sorry, but bypassing this is not what what we want in drivers at all.
> In case you have an iommu and don't want it on the root bus chose
> the noop dma implementation for this bus, which is easily possible on
> powerpc.
Good point, I'll do that instead.
-Olof
next prev parent reply other threads:[~2007-01-30 15:27 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-29 6:08 [PATCH] PA Semi PWRficient Ethernet driver Olof Johansson
2007-01-29 18:22 ` Stephen Hemminger
2007-01-30 1:41 ` Olof Johansson
2007-01-30 2:34 ` Jeff Garzik
2007-01-30 20:53 ` Olof Johansson
2007-01-29 22:35 ` Francois Romieu
2007-01-30 1:41 ` Olof Johansson
2007-01-30 10:06 ` Christoph Hellwig
2007-01-30 15:34 ` Olof Johansson [this message]
2007-01-30 21:45 ` Francois Romieu
2007-01-31 4:52 ` Olof Johansson
2007-01-30 1:44 ` [PATCH] [v2]PA " Olof Johansson
2007-01-31 5:44 ` [PATCH] [v3] PA " Olof Johansson
2007-01-31 10:34 ` Jeff Garzik
2007-02-01 3:40 ` Olof Johansson
2007-01-31 12:44 ` Ingo Oeser
2007-01-31 15:16 ` Olof Johansson
2007-01-31 18:38 ` Stephen Hemminger
2007-02-01 3:20 ` Olof Johansson
2007-02-01 3:43 ` [PATCH] [v4] " Olof Johansson
2007-02-02 13:26 ` Jeff Garzik
2007-01-30 10:03 ` [PATCH] " Christoph Hellwig
2007-01-30 15:36 ` Olof Johansson
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