On Mon, 4 Apr 2005, David Vrabel wrote:
James Bottomley wrote:
so can you provide an example of a BE bus (or device) used on a LE
platform that would actually benefit from this abstraction?
The Network Processing Engines in the Intel IXP425 are big-endian and
its XScale core may be run in little-endian mode. There's a bunch of
gotchas related to running in little-endian mode so you typically run
the IXP425 in big-endian mode, though.
But the Linux interface (on the CPU side of the PCI bus interface)
doesn't care about the implimentation details in the XScale
Core. That's why it's a complete subsystem, isolated from the
ix86 by the PCI/Bus interface.
David Vrabel
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Cheers,
Dick Johnson
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