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Altera_Forum
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16 years ago

PCIe Endpoint-to-Endpoint communication

Hi, I have two PCIe development kit : Arria II GX Development Kit and Cyclone IV GX Transceiver Starter Kit. The two boards are configurated in Endpoint device and they are in a PC mothe...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I haven't done it, but i don't see why you couldn't send a memory request to another device. As long as you know the physical address of the device you want to access. I don't know if there are any software calls you will need to make to give permission for that access, but at the very least you will have to let the endpoint that wants to start the communication know the physical address of the other endpoint. It is not a limitation of the PCIe spec, and most likely not a limitation of the chipset, but it may be. Are you sure you are forming your packet correctly?