PCIE equipment is a Xilinx FPGA card, the same drive on i7 processor PC can work normally, turn to another Xeon E5 servers, not line, specific phenomenon: DMA transfer could not be, but PIO register access no problem, for 2 weeks, excuse me each Daniel, where is the problem could be out? System is ubuntu 16.04

CodePudding user response:

Lspci -v did see exactly corresponding driver loaded

CodePudding user response:

Drive all loaded, or to communicate PIO

CodePudding user response:

With the driver and found that at the end of the DMA didn't receive interrupt, this may be the reason why? Why on the i7 will receive interrupt?

CodePudding user response:

Did you interrupt application is successful?