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Date: Mon, 31 Jan 2000 02:09:37 -0800
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From: "David S. Miller" <davem@redhat.com>
To: Jes.Sorensen@cern.ch
Cc: rmk@arm.linux.org.uk, linux-kernel@vger.rutgers.edu
In-reply-to: <d3oga2r22z.fsf@lxplus011.cern.ch> (message from Jes Sorensen on 31 Jan 2000 11:02:28 +0100)
Subject: Re: DMA changes in 2.3.41 - how the f* do I get this working on ARM?
References: <200001300006.AAA02084@raistlin.arm.linux.org.uk> <200001302211.OAA03036@pizda.ninka.net> <d3oga2r22z.fsf@lxplus011.cern.ch>
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   From: Jes Sorensen <Jes.Sorensen@cern.ch>
   Date: 31 Jan 2000 11:02:28 +0100

   The place where this is a real problem is in drivers where data is
   shared between the adapter and the host CPU, for instance the
   53c7xx driver. On the m68k we currently use a
   kernel_set_cachemode() function to change the caching of the page
   allocated for the shared structures, but thats a pretty non
   portable way of doing it. I would like to see something a
   get_free_cachecoherent_page() interface instead, what do you think
   of that?

Sounds like pci_alloc_consistent()

Go read the document and check out the interfaces, I believe
you'll be pleasantly surprised :-)

Later,
David S. Miller
davem@redhat.com

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