64 bit buswidth of intel cfi flash

[Reading niu]

hi all,
    I am working on a embeded system using intel 28F640 flash chip. There 
are 4 16bit chips so the buswidth is 64 .
    The map driver interface is only up to 32 bit, how can i deal with
it??
    BTW,my linux kernel is 2.2.18,so ....
                                     thanks a lot
                                           Reading.

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