Messages in this thread | | | Date | Thu, 27 Jul 2000 18:21:16 +0200 | From | Abramo Bagnara <> | Subject | Re: A simple question about readw, readw and the like |
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Alan Cox wrote: > > > Does this means that there is no way to mmap the PCI IO space on any > > platform other than ia32? > > PCI mmap to user space can be done (obvious coherency and other issues left > to the user mode sufferer) but that isnt done by ioremap
I suppose you mean I need to use remap_page_range with the address obtained from ioremap, don't you?
But, that apart, is a device driver that give available a part of the PCI IO space of controlled card via mmap portable to all platforms that have PCI?
And if this is true, the user application that use this mmaped area may be written in a platform independant way?
I'd like that you show a little example of what you call "suffering".
-- Abramo Bagnara mailto:abramo@alsa-project.org
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It sounds good!
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