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Problem PCI RC Read_Configuration_Ready_Register from EP

Question asked by Yun Zuo on Jul 5, 2018
Latest reply on Jul 26, 2018 by Yiping Wang

There are two P2020 boards in my system, one is configured as PCI root complex, and the other is configured as endpoint . The CFG_READY bit of the Read_Configuration_Ready_Register is set once the EP initialization is completed, and the PCI read operation on the EP shows the CFG_READY bit is 1.


On the PCI root complex, I want to know if the CFG_READY bit of the EP is set or not, then I try to read the Read_Configuration_Ready_Register from the RC, but the result is always 0. I read Advanced_Error_Reporting_Capability_ID_Register in the same, the expected result is returned (0x0001).


Is possible to get the value of Read_Configuration_Ready_Register on the EP from the RC?