Public bug reported:
---Problem Description---
This bugzilla is for tracking that the pciutils tool needs to be updated to
support pci gen4 cards. Mellanox CX5 card is a pci gen4 card and when I do the
following commands I get error. I do not see these errors with Mellanox CX4
which is pci gen3 card.
In a system, with Mellanox CX4 and CX5 IB with SRIOV:
lspci | grep Mell
0001:01:00.0 Infiniband controller: Mellanox Technologies MT28800 Family
[ConnectX-5 Ex]
0001:01:00.1 Infiniband controller: Mellanox Technologies MT28800 Family
[ConnectX-5 Ex]
0001:01:00.2 Infiniband controller: Mellanox Technologies MT28800 Family
[ConnectX-5 Virtual Function]
0002:01:00.0 Infiniband controller: Mellanox Technologies MT27700 Family
[ConnectX-4]
0002:01:00.1 Infiniband controller: Mellanox Technologies MT27700 Family
[ConnectX-4]
0002:01:00.2 Infiniband controller: Mellanox Technologies MT27700 Family
[ConnectX-4 Virtual Function]
If I do this command with CX4 is ok
virsh nodedev-detach pci_0002_01_00_2
Device pci_0002_01_00_2 detached
but if I do this with CX5 it fails:
virsh nodedev-detach pci_0001_01_00_2
error: Failed to detach device pci_0001_01_00_2
error: malformed 'speed' attribute: (null)
This is what I see with CX5:
lspci -vv -s 0001:01:00.2 | grep Speed
LnkCap: Port #0, Speed unknown, Width x16, ASPM not supported, Exit Latency L0s
unlimited, L1 unlimited
LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt-
ABWMgmt-
and this is what I see for CX4
lspci -vv -s 0002:01:00.2 | grep Speed
LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM not supported, Exit Latency L0s
unlimited, L1 unlimited
LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt-
ABWMgmt-
---Additional Hardware Info---
using Mellanox CX5 card that is pci gen4
lspci -vv -s 0001:01:00.0 | grep Speed
LnkCap: Port #0, Speed unknown, Width x16, ASPM not supported,
Exit Latency L0s unlimited, L1 unlimited
LnkSta: Speed 8GT/s, Width x16, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt-
LnkCtl2: Target Link Speed: Unknown, EnterCompliance- SpeedDis-
Machine Type = P8
---Steps to Reproduce---
just plug a pci gen4 card to the system and do this command
lspci -vv -s 0001:01:00.0 | grep Speed
LnkCap: Port #0, Speed unknown, Width x16, ASPM not supported,
Exit Latency L0s unlimited, L1 unlimited
LnkSta: Speed 8GT/s, Width x16, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt-
LnkCtl2: Target Link Speed: Unknown, EnterCompliance- SpeedDis-
Will see the speed unknown.
Userspace tool common name: pciutils
The patch is already in the pci utils tree:
commit 9628600bbbeffc4ec6dc48943ee091a5d3eca18b
Author: Gavin Shan <[email protected]>
Date: Wed Feb 15 10:53:45 2017 +1100
lspci: Support GEN4 speed (16GT/s)
This enables "lspci" to show GEN4 speed (16GT/s) properly according
to the contents in register PCI_EXP_LNKCAP, PCI_EXP_LNKSTA and
PCI_EXP_LNKCTL2.
IBM is asking for the patch to go into 17.04 as well s 16.04.3.
** Affects: pciutils (Ubuntu)
Importance: Undecided
Assignee: Taco Screen team (taco-screen-team)
Status: New
** Tags: architecture-ppc64le bugnameltc-151418 severity-high
targetmilestone-inin1704
** Tags added: architecture-ppc64le bugnameltc-151418 severity-high
targetmilestone-inin1704
** Changed in: ubuntu
Assignee: (unassigned) => Taco Screen team (taco-screen-team)
** Package changed: ubuntu => pciutils (Ubuntu)
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https://bugs.launchpad.net/bugs/1665436
Title:
lspci tool needs to be updated to support pci gen4 cards
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