L-tile and H-tile Avalon® Memory-mapped Intel® FPGA IP for PCI Express* User Guide

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ID 683667
Date 11/11/2021
Public
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11.2.1.3.5. ltssm_display <num_states>

The ltssm_display <num_states> command reads data from the LTSSM FIFO and outputs <num_states> LTSSM states and associated status to the System Console.

% ltssm_display <num_states>

Sample output:

LTSSM[4:0] Perstn Locktodata Link Up Active Lanes Current Speed Timer PLL Locked
0x00 Detect.Quiet 0 0x0000 0 0 00 0 0
0x00 Detect.Quiet 1 0x00FF 1 8 00 183237 1
0x11 L0 1 0x00FF 1 8 01 26607988 1
0x0D Recovery.Rcvlock 1 0x00FF 1 8 01 252 1
0x0F Recovery.Rcvconfig 1 0x00FF 1 8 01 786 1
0x0E Recovery.Speed 1 0x00FF 1 8 02 175242 1
0x0D Recovery.Rcvlock 1 0x00FF 1 8 02 6291458 1
0x0E Recovery.Speed 1 0x00FF 1 8 01 175296 1
0x0D Recovery.Rcvlock 1 0x00FF 1 8 01 2628 1
0x0F Recovery.Rcvconfig 1 0x00FF 1 8 0001 602 1
0x00 Recovery.Idle 1 0x00FF     0001 36 1

You can use this command to empty the FIFO by setting <num_states> to 1024:

% ltssm_display 1024

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