where should I map 0x8000,0000 ~ 0xfc00,0000 to ?

Hi all
 I am newer to linux.
 
 My board is MPC750+MPC106, and I use MAPB for MPC106.
 Due to 106 datasheet, 
 0x8000,0000 -- 0xFC00,0000 for PCI memory space.
 
 As you know, user space is 0~0xbfff,ffff (3G). 
 0xc000,0000 ~ 0xffff,ffff(1G) is for kernel.

 And my question is:
 1) where should I map this address space to ?
 2) user application can access this address space directly?
 
 
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