Ppc to PowerPC changes relating to XGPIO

Hello all,
when I was using the PPC kernel a couple versions back, I had modified the 
xgpio_ioctl.h file (and its related adapter.c) in order to extend the 
xgpio_ioctl() function with new commands for my needs.

But now I don't see where the equivalent code is located with the new 
architecture. How do I interact win GPIOs from usermode if not for ioctl calls 
? (I need to manipulate the direction bits, not just read/write values).

Note: I'm using the kernel provided by the Xilinx git, so maybe my question 
isn't relevant here.

Thanks
-- 
Guillaume Dargaud
http://www.gdargaud.net/