Messages in this thread | | | Date | Mon, 31 Jan 2000 02:09:37 -0800 | From | "David S. Miller" <> | Subject | Re: DMA changes in 2.3.41 - how the f* do I get this working on ARM? |
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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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