em(4) problems.

[Petri Helenius]

I´m highly confident that this is a case of integrated "CSA" ethernet 
with broken BIOS. I suspect you get an message about that when booting.

Pete


Søren Schmidt wrote:

> John Polstra wrote:
>
>> On 05-May-2004 Søren Schmidt wrote:
>>
>>> For what its worth I have problems with one em based interface as 
>>> well, it locks the machine solid when used:
>>>
>>> em0: <Intel(R) PRO/1000 Network Connection, Version - 1.7.25> port 
>>> 0xb000-0xb01f mem 0xfb100000-0xfb11ffff irq 10 at device 1.0 on pci1
>>> em0: Reserved 0x20000 bytes for rid 0x10 type 3 at 0xfb100000
>>> em0: Reserved 0x20 bytes for rid 0x18 type 4 at 0xb000
>>> em0: [GIANT-LOCKED]
>>> em0: Ethernet address: 00:30:48:80:9f:b6
>>>
>>> where this one works just fine:
>>>
>>> em1: <Intel(R) PRO/1000 Network Connection, Version - 1.7.25> port 
>>> 0xa800-0xa83f mem 0xfa000000-0xfa01ffff irq 19 at device 10.0 on pci3
>>> em1: Reserved 0x20000 bytes for rid 0x10 type 3 at 0xfa000000
>>> em1: Reserved 0x40 bytes for rid 0x18 type 4 at 0xa800
>>> em1: [GIANT-LOCKED]
>>> em1: Ethernet address: 00:30:48:80:9f:b7
>>>
>>>
>>> The chips are these
>>> em0 at pci1:1:0:   class=0x020000 card=0x10758086 chip=0x10758086 
>>> rev=0x00 hdr=0x00
>>> em1 at pci3:10:0:  class=0x020000 card=0x10768086 chip=0x10768086 
>>> rev=0x00 hdr=0x00
>>
>>
>>
>> Are either of the IRQs (10 and 19) shared with other devices?
>
>
> Yes, the working one is shared with an (unused) USB port
>