[openib-general] Low cost MBs compatible with Mellanox PCIE Cards

[Bob Pearson]

Jim has worked with the A8N-SLI board. We have worked with a newer version
called A8N32-SLI Deluxe which has much better PCIe support. Ours has only
run the gen1 stack so I have no idea what it does with the gen2 stack. As
for the BIOS issue mentioned perhaps Steve W could take a look and see if
the comment from Jason makes any sense but my impression is that everything
was just fine.

 

  _____  

From: Bill Boas [mailto:bill.boas at gmail.com] 
Sent: Wednesday, February 15, 2006 10:56 PM
To: Bob Pearson
Subject: Fwd: [openib-general] Low cost MBs compatible with Mellanox PCIE
Cards

 


Do we have something to contribute to this thread?

 


---------- Forwarded message ----------
From: Roland Dreier <rdreier at cisco.com>
Date: Feb 15, 2006 4:52 PM 
Subject: Re: [openib-general] Low cost MBs compatible with Mellanox PCIE
Cards
To: Jason Gunthorpe <jgunthorpe at obsidianresearch.com>
Cc: openib-general at openib.org

   Jason> Unfortunately the board's BIOS's ACPI tables are totally
   Jason> broken and the BIOS assigns every interrupt source in the
   Jason> system to IRQ 5 :< At least it does work in full APIC mode 
   Jason> which means it might be possible to get MSI working if the
   Jason> nvidia bridge isn't broken.

I've not seen any problems with MSI/MSI-X with nforce4 and PCIe HCAs
on both my Asus A8N-SLI and HP DL145G2 systems. 

Just building a kernel with CONFIG_PCI_MSI enabled might help, since
it changes the way the kernel numbers interrupts.

- R.
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