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AMalo4
New Contributor
New ContributorHow to obtain the End-point bus number from Hard IP for PCI Express Intel Arria 10 Avalon ST?
During assembly, a Memory Read Request's we need to know the End-point bus number which provided by Root Complex. If a wrong value used the Root Complex will not provide answers on End-point requests...
SengKok_L_Intel
Regular Contributor
Regular ContributorHi,
The BDF of an endpoint can be obtained from the configuration space register. You can refer to section 5.1.2 to 5.12.2 (transaction layer configuration space signals) for the detail, where the register name is cfg_busdev[12:0]
https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_a10_pcie_avst.pdf
Regards -SK
