Messages in this thread | | | Date | Thu, 4 Sep 2003 09:43:28 -0700 | From | "David S. Miller" <> | Subject | Re: [PATCH] fix ppc ioremap prototype |
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On Thu, 4 Sep 2003 09:41:37 -0700 (PDT) Linus Torvalds <torvalds@osdl.org> wrote:
> No, I don't agree. The "iomem_resource" is there for all IO-mapped ranges, > and it could easily be a mixture of PCI and other buses. In fact, it > already is on bog-standard hardware: it contains the AGP windows etc.
Sure, but this model falls apart for things like I/O ports and any other device access entity where one needs to use special accessors to access stuff.
> So clearly ioremap() has to work for other buses too.
What if they are like I/O ports on x86 and require special instructions to access?
> I think that in the 2.7.x timeframe, the right thing to do is definitely: > - move towards using "struct resource" and "ioremap_resource()" > - make resource sizes potentially be larger (ie use "u64" instead of > "unsigned long")
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