vme_adapter man page on IRIX

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vme_adapter(D3X)					      vme_adapter(D3X)

NAME
     vme_adapter - determine VME adapter

SYNOPSIS
     int vme_adapter(void *addr);

DESCRIPTION
     This function accepts a kernel virtual address mapping any VME address,
     and returns VME adapter number where the device responding the given
     address is connected. This function is available on Challenge and Onyx
     systems.

     Normally device drivers have access to VME Bus adapter number their
     device is attached to, at edtinit time through e_adap field in edt
     structure.	 vme_adapter function can be used in circumstances where it
     becomes necessary to calculate VME bus adapter number, given a kernel
     virtual address (generated using pio_map* functions) mapping a VME bus
     address..P This adapter number is required by such functions as
     dma_mapalloc(D3X).

   Return Values
     If the passed-in address is a kernel virtual address mapping valid VME
     address, vme_adapter returns the adapter number; otherwise, it returns
     -1.

   See Also
     dma_mapalloc(D3X)

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