Hello there!

i have designed a system of pcie root complex using zcu102 xilinx board.
i wrote drivers on the processor side as well that initialize, read and write.

in addition, i am using petlinux on the board. now, i am able to read/write properly and now i want to unlock pcie burst mode capability.

Is it possible to do so using memcpy function?
Thanks!

this should be done using DMA, not memcpy. Memcpy will work, yes, but it will be significantly slower than DMA due to the design of the boards. Many, many sites say this is the usual approach.

burst mode probably requires using a provided library function. I don't know much about it, but give this a scan:
https://community.osr.com/discussion/132106/how-to-copy-memory-more-quickly