11-13-2019 08:46 PM
I am using the product for which following is the product guide - PG195 (v4.1) June 20, 2019 DMA/Bridge Subsystem for PCIe v4.1
I am doing Endpoint to Root Complex memory transaction. For the same I have defined the descriptors and enabled the descriptor mode for C2H transfer.
I have programmed the descriptor as per the details provided in the above mentioned PG. Yet I see 'magic_stopped' bit of the C2H channel 0 status register is set and I also have desc_error[4:0] of the same register as 0x1 which means "Unsupported request" as per the PG.
Please suggest a solution for the same
11-14-2019 01:16 AM
would you please check the magic bit in the descriptor?
What is the value? This should be the one suggested in the PG