Messages in this thread | | | Date | Mon, 04 Apr 2005 07:22:20 -0700 | From | "Randy.Dunlap" <> | Subject | Re: iomapping a big endian area |
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James Bottomley wrote: > On Mon, 2005-04-04 at 17:50 +1000, Benjamin Herrenschmidt wrote: > >>I disagree. The driver will never "know" ... > > > ? the driver has to know. Look at the 53c700 to see exactly how awful > it is. This beast has byte and word registers. When used BE, all the > byte registers alter their position (to both inb and readb). > > >>I don't think it's sane. You know that your device is BE or LE and use >>the appropriate interface. "native" doesn't make sense to me in this >>context. > > > Well ... it's like this. Native means "pass through without swapping" > and has an easy implementation on both BE and LE platforms. Logically > io{read,write}{16,32}be would have to do byte swaps on LE platforms. > Being lazy, I'm opposed to doing the work if there's no actual use for > it, so can you provide an example of a BE bus (or device) used on a LE > platform that would actually benefit from this abstraction?
I would probably spell "native" as "noswap". "native" just doesn't convey enough specific meaning...
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