[ewg] OFED 1.2.5 issue with MSI ??

[Tziporet Koren]

Arlin Davis wrote:
> I just noticed when setting up MSI support that ib_mthca fails with the following:
>
> This is on 2 different Intel platforms that worked with OFED 1.2:
>
> ib_mthca: Mellanox InfiniBand HCA driver v0.08 (February 14, 2006)
> ib_mthca: Initializing 0000:0a:00.0
> ACPI: PCI interrupt 0000:0a:00.0[A] -> GSI 16 (level, low) -> IRQ 169
> PCI: Setting latency timer of device 0000:0a:00.0 to 64
> ib_mthca 0000:0a:00.0: NOP command failed to generate interrupt (IRQ 233), aborting.
> ib_mthca 0000:0a:00.0: Try again with MSI/MSI-X disabled.
> ib_mthca: probe of 0000:0a:00.0 failed with error -16
>
> lspci -v v
> 0a:00.0 InfiniBand: Mellanox Technologies MT25208 InfiniHost III Ex (Tavor compatibility mode) (rev
>
>   
I just tried OFED 1.2.5 on the same HCA with MSI-X and its worked fine.
Which OS have you used?

Tziporet

My system info:

OS: Red Hat Enterprise Linux AS release 4 (Nahant Update 3) with kernel 
2.6.9-34.ELsmp
 > cat /proc/interrupts
 50:        238        262       PCI-MSI-X  ib_mthca (comp)
 58:          0          0       PCI-MSI-X  ib_mthca (async)
 66:        339        764       PCI-MSI-X  ib_mthca (cmd)

 > lspci -v
02:00.0 InfiniBand: Mellanox Technologies MT25208 InfiniHost III Ex 
(Tavor compatibility mode) (rev a0)
        Subsystem: Mellanox Technologies MT25208 InfiniHost III Ex 
(Tavor compatibility mode)
        Flags: bus master, fast devsel, latency 0, IRQ 209
        Memory at ca000000 (64-bit, non-prefetchable) [size=1M]
        Memory at ca800000 (64-bit, prefetchable) [size=8M]
        Memory at d0000000 (64-bit, prefetchable) [size=128M]
        Capabilities: [40] Power Management version 2
        Capabilities: [48] Vital Product Data
        Capabilities: [90] Message Signalled Interrupts: 64bit+ 
Queue=0/5 Enable-
        Capabilities: [84] MSI-X: Enable+ Mask- TabSize=32
        Capabilities: [60] Express Endpoint IRQ 0