6.2-RC1 em(4) issue - freezes during CD boot

[Chris Buechler]

Jack Vogel wrote:
> I need the PCI ID of that NIC, just to be sure that I can't reproduce 
> this, but
> I doubt it, pciconf -l


Here's the pciconf -l from 6.2-RC1, custom kernel (copy of GENERIC, 
minus 'device em')

agp0 at pci0:0:0:  class=0x060000 card=0x00000000 chip=0x700c1022 rev=0x20 
hdr=0x00
pcib1 at pci0:1:0: class=0x060400 card=0x00000000 chip=0x700d1022 rev=0x00 
hdr=0x01
isab0 at pci0:7:0: class=0x060100 card=0x00000000 chip=0x74401022 rev=0x05 
hdr=0x00
atapci0 at pci0:7:1:       class=0x01018a card=0x74411022 chip=0x74411022 
rev=0x04 hdr=0x00
none0 at pci0:7:3: class=0x068000 card=0x74431022 chip=0x74431022 rev=0x03 
hdr=0x00
none1 at pci0:8:0: class=0x030000 card=0x00000000 chip=0x47581002 rev=0x01 
hdr=0x00
none2 at pci0:9:0: class=0x020000 card=0x002e8086 chip=0x100e8086 rev=0x02 
hdr=0x00
asr0 at pci0:10:0: class=0x0e0001 card=0xc0661044 chip=0xa5011044 rev=0x01 
hdr=0x00
pcib2 at pci0:10:1:        class=0x060400 card=0x00000068 chip=0xa5001044 
rev=0x01 hdr=0x01
pcib3 at pci0:16:0:        class=0x060400 card=0x00000000 chip=0x74481022 
rev=0x05 hdr=0x01
ohci0 at pci3:0:0: class=0x0c0310 card=0x00000000 chip=0x74491022 rev=0x07 
hdr=0x00
xl0 at pci3:8:0:   class=0x020000 card=0x246610f1 chip=0x920010b7 rev=0x78 
hdr=0x00


> interesting question is what will happen when you load
> the em driver afterwords :) 

Indeed, I was expecting Bad Things to happen.  But no, after the 
kldload, the interface was detected, I put an IP on it and it's working 
fine.  I bound an iperf server to that interface and ran an iperf client 
from a slower box with a gig card and got ~520 Mbps out of it (probably 
limited by the slower client box).  So it seems to be working fine as 
long as it's not compiled into the kernel.  Granted I haven't done any 
really extensive testing or use of it. 

Here's the pciconf -l after loading the em driver. 

agp0 at pci0:0:0:  class=0x060000 card=0x00000000 chip=0x700c1022 rev=0x20 
hdr=0x00
pcib1 at pci0:1:0: class=0x060400 card=0x00000000 chip=0x700d1022 rev=0x00 
hdr=0x01
isab0 at pci0:7:0: class=0x060100 card=0x00000000 chip=0x74401022 rev=0x05 
hdr=0x00
atapci0 at pci0:7:1:       class=0x01018a card=0x74411022 chip=0x74411022 
rev=0x04 hdr=0x00
none0 at pci0:7:3: class=0x068000 card=0x74431022 chip=0x74431022 rev=0x03 
hdr=0x00
none1 at pci0:8:0: class=0x030000 card=0x00000000 chip=0x47581002 rev=0x01 
hdr=0x00
em0 at pci0:9:0:   class=0x020000 card=0x002e8086 chip=0x100e8086 rev=0x02 
hdr=0x00
asr0 at pci0:10:0: class=0x0e0001 card=0xc0661044 chip=0xa5011044 rev=0x01 
hdr=0x00
pcib2 at pci0:10:1:        class=0x060400 card=0x00000068 chip=0xa5001044 
rev=0x01 hdr=0x01
pcib3 at pci0:16:0:        class=0x060400 card=0x00000000 chip=0x74481022 
rev=0x05 hdr=0x01
ohci0 at pci3:0:0: class=0x0c0310 card=0x00000000 chip=0x74491022 rev=0x07 
hdr=0x00
xl0 at pci3:8:0:   class=0x020000 card=0x246610f1 chip=0x920010b7 rev=0x78 
hdr=0x00


Chris