[openib-general] xt3 troubles (with OFED 1.0.1)

[Troy Benjegerdes]

On Tue, Aug 01, 2006 at 05:39:49PM -0400, Makia Minich wrote:
> So, after flailing about with my IPOIB issue on the XT3, I decided that
> perhaps a firmware upgrade (from 3.3.3 to 3.4.0) might be in order.  Prior
> to the upgrade, I was able to bring the entire stack online and see the
> infiniband network (provided I refrained from ifconfig'ing the ipoib
> interfaces).  Now, on loading ib_mthca I get the following out of dmesg:
> 
> ib_mthca: Mellanox InfiniBand HCA driver v0.08 (February 14, 2006)
> ib_mthca: Initializing 0000:04:00.0
> PCI: Unable to reserve mem region #3:ffffffffffe00000 at ff000000 for device
> 0000:04:00.0
> ib_mthca 0000:04:00.0: Cannot obtain PCI resources, aborting.
> ib_mthca: probe of 0000:04:00.0 failed with error -16
> 
> I saw an early-2005 thread about the P615 that seemed to have the same
> problem, but I couldn't find a resolution.  Does anyone know what might be
> able to be done?  Or perhaps where I should start looking?

You could probably start by encourageing your linux vendor to post their kernel
patches.. I bet they did something hokey in the PCI memory mapping.

Can you post the output of lspci -v ?

On the P615's, this was due to the firmware not allocating a big enough
MMIO region allocated.