pcie connection using pcie switch

Hi..

We consider that 1 c6678 and 4 evmk2h are connected with pcie links..

so I wonder if those DSPs can commucate with PCIE using pcie switch(like PEX8608 of PLX Tech co.)

is there any constraints in TI's DSP. something like only 1:1 connection allowance.

for your information, We will configure c6678 is to RC, four keystone ii DSPs are to EPs

Thanks in advance

lee