[PLUG] three e1000s in a box, only two work

[Kurt Sussman]

I'm working remotely on a box that has three Intel NICs, two on the
motherboard and one card. It finds all of the NICs, but doesn't load a
driver for the third. 

  e1000: 0000:06:00.0: e1000_probe: (PCI Express:2.5Gb/s:Width x4) 00:30:48:30:bc:44
  divert: allocating divert_blk for eth0
  e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
  ACPI: PCI interrupt 0000:06:00.1[B] -> GSI 19 (level, low) -> IRQ 185
  PCI: Setting latency timer of device 0000:06:00.1 to 64
  e1000: 0000:06:00.1: e1000_probe: (PCI Express:2.5Gb/s:Width x4) 00:30:48:30:bc:45
  divert: allocating divert_blk for eth1
  e1000: eth1: e1000_probe: Intel(R) PRO/1000 Network Connection
  ACPI: PCI interrupt 0000:0b:02.0[A] -> GSI 16 (level, low) -> IRQ 169
  e1000: 0000:0b:02.0: e1000_probe: (PCI:33MHz:32-bit) 00:30:48:88:9f:c5
  divert: allocating divert_blk for eth2
  e1000: eth2: e1000_probe: Intel(R) PRO/1000 Network Connection
  Evaluate _OSC Set fails. Status = 0x0005
  pciehp: Both _OSC and OSHP methods do not exist
  Evaluate _OSC Set fails. Status = 0x0005
  pciehp: Both _OSC and OSHP methods do not exist
  Evaluate _OSC Set fails. Status = 0x0005
  pciehp: Both _OSC and OSHP methods do not exist

The _OSC stuff is ACPI hotplug-related. I have not looked too deeply
into this; the PCI Express NICs load fine, and that's that the hotplug
is looking for, I think.

Here's the modprobe.conf:

  alias scsi_hostadapter adp94xx
  alias eth0 e1000
  alias eth1 e1000
  alias eth2 e1000

Strangely, the adp94xx and eth0 show up on the same IRQ, and the BIOS
won't allow the Adaptec card's interrupt to be forced.

           CPU0       CPU1       CPU2       CPU3
  0:     209694     229297     221551     219385    IO-APIC-edge  timer
  1:         68         37        128        218    IO-APIC-edge  i8042
  8:          0          0          0          0    IO-APIC-edge  rtc
  9:          0          0          0          0   IO-APIC-level  acpi
 12:       1105         32         23        325    IO-APIC-edge  i8042
 14:          6          5       3784       3804    IO-APIC-edge  ide0
169:     164121       4130       4095       4051   IO-APIC-level adp94xx, eth0
177:         47      10415      11654       1493   IO-APIC-level ehci_hcd, uhci_hcd
185:          0          0          0          0   IO-APIC-level uhci_hcd
193:          0          0          0          0   IO-APIC-level uhci_hcd
209:         12       1537          0          0         PCI-MSI  eth1
NMI:     879941     879872     879875     879867
LOC:     879386     879443     879443     879440
ERR:          0
MIS:          0

Oh, yeah, it's a dual dual-core Xeon system, running CentOS 4.4 with the
-34 kernel. 

I'm stuck. The e1000 doesn't have an option for setting the IRQs. The
adp94xx doesn't seem to either, but I haven't been able to find the
source that corresponds to this CentOS build.

Any ideas?

TIA!

--Kurt
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