issues with SR-IOV support in XL710 on Asus

Nobin_M_ · ‎09-09-2014

I have a intel XL710 with four ports, lspci output is below

01:00.0 Ethernet controller: Intel Corporation Device 1572
   Subsystem: Intel Corporation Device 0000
   Flags: fast devsel, IRQ 16
   Memory at <ignored> (64-bit, prefetchable)
   Memory at <ignored> (64-bit, prefetchable)
   Expansion ROM at f7780000 [disabled] [size=512K]
   Capabilities: [40] Power Management version 3
   Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
   Capabilities: [70] MSI-X: Enable- Count=129 Masked-
   Capabilities: [a0] Express Endpoint, MSI 00
   Capabilities: [e0] Vital Product Data
   Capabilities: [100] Advanced Error Reporting
   Capabilities: [140] Device Serial Number d0-6c-1f-ff-ff-ca-05-68
   Capabilities: [150] Alternative Routing-ID Interpretation (ARI)
   Capabilities: [160] Single Root I/O Virtualization (SR-IOV)
   Capabilities: [1a0] Transaction Processing Hints
   Capabilities: [1b0] Access Control Services
   Capabilities: [1d0] #19

01:00.1 Ethernet controller: Intel Corporation Device 1572
   Subsystem: Intel Corporation Device 0000
   Flags: fast devsel, IRQ 16
   Memory at <ignored> (64-bit, prefetchable)
   Memory at <ignored> (64-bit, prefetchable)
   Expansion ROM at f7700000 [disabled] [size=512K]
   Capabilities: [40] Power Management version 3
   Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
   Capabilities: [70] MSI-X: Enable- Count=129 Masked-
   Capabilities: [a0] Express Endpoint, MSI 00
   Capabilities: [e0] Vital Product Data
   Capabilities: [100] Advanced Error Reporting
   Capabilities: [140] Device Serial Number d0-6c-1f-ff-ff-ca-05-68
   Capabilities: [150] Alternative Routing-ID Interpretation (ARI)
   Capabilities: [160] Single Root I/O Virtualization (SR-IOV)
   Capabilities: [1a0] Transaction Processing Hints
   Capabilities: [1b0] Access Control Services

only two ports say SR-IOV support why?

Secondly when I load the i40e.ko driver it gives error below:

insmod i40e.ko max_vfs=8,8,0,0

[11844.052099] i40e 0000:01:00.1: MAC address: 68:05:ca:1f:6c:d1
[11844.060297] i40e 0000:01:00.1: irq 87 (237) for MSI/MSI-X
[11844.060332] i40e 0000:01:00.1: irq 88 (236) for MSI/MSI-X
[11844.060364] i40e 0000:01:00.1: irq 89 (235) for MSI/MSI-X
[11844.060396] i40e 0000:01:00.1: irq 90 (234) for MSI/MSI-X
[11844.060428] i40e 0000:01:00.1: irq 94 (233) for MSI/MSI-X
[11844.060460] i40e 0000:01:00.1: irq 95 (232) for MSI/MSI-X
[11844.060492] i40e 0000:01:00.1: irq 96 (231) for MSI/MSI-X
[11844.060524] i40e 0000:01:00.1: irq 97 (230) for MSI/MSI-X
[11844.060557] i40e 0000:01:00.1: irq 98 (229) for MSI/MSI-X
[11844.060589] i40e 0000:01:00.1: irq 99 (228) for MSI/MSI-X
[11844.060622] i40e 0000:01:00.1: irq 100 (227) for MSI/MSI-X
[11844.060654] i40e 0000:01:00.1: irq 101 (226) for MSI/MSI-X
[11844.060687] i40e 0000:01:00.1: irq 102 (225) for MSI/MSI-X
[11844.060719] i40e 0000:01:00.1: irq 103 (224) for MSI/MSI-X
[11844.060752] i40e 0000:01:00.1: irq 104 (223) for MSI/MSI-X
[11844.060784] i40e 0000:01:00.1: irq 105 (222) for MSI/MSI-X
[11844.060817] i40e 0000:01:00.1: irq 106 (221) for MSI/MSI-X
[11844.060851] i40e 0000:01:00.1: irq 107 (220) for MSI/MSI-X
[11844.237119] i40e 0000:01:00.1: not enough MMIO resources for SR-IOV
[11844.237125] i40e 0000:01:00.1: Failed to enable SR-IOV, error -12.
[11844.237128] i40e 0000:01:00.1: failed to alloc vfs: -12
[11844.246638] i40e 0000:01:00.1: PCI-Express: Speed 8.0GT/s Width x8
[11844.246645] i40e 0000:01:00.1: Features: PF-id[1] VFs: 4 VSIs: 66 QP: 8 RSS FD_ATR FD_SB NTUPLE
[11844.246675] i40e 0000:01:00.2: PCI INT A -> GSI 16 (level, low) -> IRQ 16

Any Idea why this happens,

System Spec: Asus P8Z77-V PRO

BIOS version: 1708

Processor : i7-3770

Total RAM : 32GB

I am not using the i40e driver which is coming with latest linux kernel, some i40e-0.4.17 version is what I have.

Thanks

Nobin Mathew