78
•
mstlink -d <device> --port_type PCIE --margin --measure_time
10
--lane
0
Getting PCIe links info:
mstlink -d /dev/mst/mt41682_pciconf0 --port_type PCIE --show_links
Valid PCIe Links
----------------
: depth, pcie_index, node, port
Link
1
:
3
,
0
,
0
,
60
Link
2
:
3
,
0
,
1
,
61
Link
3
:
3
,
0
,
2
,
62
..
To query information for a specific link, the depth, pcie_index and node for the link must be
specified:
mstlink -d /dev/mst/mt41682_pciconf0 --port_type PCIE --depth
3
--pcie_index
0
--node
1
--show_serdes_tx --show_eye
PCIe Operational (Enabled) Info
-------------------------------
Depth, pcie index, node :
3
,
0
,
1
Link Speed Active (Enabled) : 8G-Gen
3
(16G-Gen
4
)
Link Width Active (Enabled) : 2X (16X)
Device Status : N/A
EYE Opening Info (PCIe)
-----------------------
Physical Grade :
84
,
84
Height Eye Opening [mV] :
1194
,
1194
Phase Eye Opening [psec] :
84
,
84
Serdes Tuning Transmitter Info (PCIe)
-------------------------------------
: Pol,tap0,tap1,tap2,bias,preemp_mode,reg,leva
Lane
0
:
1
,
0
,
114
,
6
,
15
,
1
,
11
,
9
Lane
1
:
0
,
0
,
116
,
4
,
15
,
1
,
11
,
9
To print the output in JSON format:
mstlink -d <device> --show_module --json
To show ports group map (for NVIDIA Quantum and NVIDIA Spectrum-2):
mstlink –d<device> --show_tx_group_map
0
To assign ports to a specific group on NVIDIA Quantum and NVIDIA
Spectrum-2
mstlink –d <device> --tx_group_map
1
–ports
1
,
2
,
3
,
5
,
4
,
8
,
7
,
8
,
9
,
10
,
11
Margin Scan Tool
The margin scan tool is used for scanning PCIe [Gen4 speed] or Network ports [EDR\25G or HDR\PAM4
speeds].
To enable the margin scan with measure time 10 seconds:
mstlink –d <device> --port_type PCIE –margin –measure_time
10
To enable the margin scan for Multi-host or Socket Direct systems through:
depth, pcie_index and node:
mstlink –d <device> --port_type PCIE –depth
0
–pcie_index
1
–node
0
–margin –measure_time
30
If the margin scan fails with this message (Eye scan not completed), perform a reboot and
run the scan again.
