PCIE KC705 xapp1052 Error in Link Width

[nag.chil]

Hello,

Iam Implementing PCIe BMD design in KC705 using vivado. Following XAPP1052.

I have programmed FPGA Succesfully.

loaded xbmd linux driver also successfully.

Compiled xml file and got executable file.

But when i open ./xbmd_app it is showing some error and application is closing

Error is: Negotiated Link speed read not valid: Read LW = 0

Please see attached screen shot file for details

Please can anyone say what that error is and what is remedy ?

[balkris · Accepted solution]

check this ARs
https://www.xilinx.com/support/answers/36593.html

This forum post may be helpful
https://forums.xilinx.com/t5/PCI-Express/XAPP1052-Win7-64-bit-BSOD-and-Ubuntu-11-10-32-bit-Error/td-p/216783

[nag.chil]

Tq balkris

2nd link helped me a lot,

Earlier i have changed ioctl to unlocked_ioctl but didn't changed the arguments.

Now after changing arguments it worked.

Thankyou once again,

Continue your best services.

RGDS,

CNR