From: Christoph Hellwig <hch@infradead.org>
To: Olof Johansson <olof@lixom.net>
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 10:06:49 +0000 [thread overview]
Message-ID: <20070130100649.GB8548@infradead.org> (raw)
In-Reply-To: <20070130014116.GB18935@lixom.net>
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.
next prev parent reply other threads:[~2007-01-30 10:07 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 [this message]
2007-01-30 15:34 ` Olof Johansson
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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