FreeBSD 5.5-STABLE, HP DC7600CMT : bge0 and irq issues

[Odhiambo Washington]

I am having a problem that I have now come to believe is specific only 
to HP DC7600 CMT PC, of which I have several pieces running FreeBSD 
5.5-STABLE (all updated via CVSUP).

When these PCs boot, I see the following messages on the console:

Interrupt storm detected on "irq19: atapci1"; throttling interrupt source
bge0: firmware handshake timed out

Now....

gw# grep irq /var/run/dmesg.boot
ioapic0 <Version 2.0> irqs 0-23 on motherboard
pcib2: <MPTable PCI-PCI bridge> irq 17 at device 28.1 on pci0
bge0: <Broadcom BCM5752 Gigabit Ethernet, ASIC rev. 0x6001> mem 0xe0500000-0xe050ffff irq 17 at device 0.0 on pci63
uhci0: <UHCI (generic) USB controller> port 0x2000-0x201f irq 20 at device 29.0 on pci0
uhci1: <UHCI (generic) USB controller> port 0x2020-0x203f irq 18 at device 29.1 on pci0
uhci2: <UHCI (generic) USB controller> port 0x2040-0x205f irq 21 at device 29.2 on pci0
uhci3: <UHCI (generic) USB controller> port 0x2060-0x207f irq 22 at device 29.3 on pci0
ehci0: <EHCI (generic) USB 2.0 controller> mem 0xe04c4000-0xe04c43ff irq 20 at device 29.7 on pci0
xl0: <3Com 3c905-TX Fast Etherlink XL> port 0x1000-0x103f irq 16 at device 4.0 on pci5
atapci0: <GENERIC ATA controller> port 0x20a0-0x20af,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 irq 17 at device 31.1 on pci0
atapci1: <GENERIC ATA controller> port 0x20b0-0x20bf,0x20f4-0x20f7,0x20e0-0x20e7,0x20f0-0x20f3,0x20d8-0x20df irq 19 at device 31.2 on pci0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
fdc0: <Enhanced floppy controller> at port 0x3f0-0x3f5 irq 6 drq 2 on isa0
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio1: configured irq 3 not in bitmap of probed irqs 0
Interrupt storm detected on "irq19: atapci1"; throttling interrupt source



.... irq 19 is assigned atapci1 from the above messages.

I have tried google, but perhaps with the wrong keywords, as happens 
sometimes!

Q1. Why I am getting Interrupt storm?
Q2. Is there a particular problem with the bge0 drivers? (but why only 
on this PC, because I haven't seen this on other PCs havnng bge cards)

Thank you 4 any insights..



-Wash

http://www.netmeister.org/news/learn2quote.html

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