[Bug 1665436] [NEW] lspci tool needs to be updated to support pci gen4 cards

Thu Feb 16 19:39:12 UTC 2017

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 <gwshan at linux.vnet.ibm.com>
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

Status in pciutils package in Ubuntu:
  New

Bug description:
  ---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 <gwshan at linux.vnet.ibm.com>
  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.

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