sys32_ioctl issue

Hi,
	many thanks to the list for getting me of the ground with porting
our Intel 32 bit drivers to sparc64.  I have now managed to compile and load
the driver module successfully.  

The next step is to load our card with it's firmware.  We do this through an
ioctl interface to the driver with a loader program.  I was getting on fine
with this until I came to the first ioctl operation.  In the 32 bit Intel
version the ioctl command is calculated (with the _IO macro) as 0x7800, and
this comes out as 0x20007800 on sparc64 with the same calculation.  The
sys32_ioctl function reports the following error:

Apr 29 15:37:16 icarus kernel: sys32_ioctl(fsx25load:5058): Unknown cmd
fd(3) cmd(20007800) arg(00000000)

How is sys32_ioctl making the conversion of the ioctl and what does my
fsx25load program or driver need to do to solve the problem?


Thanks

Kevin