I'm looking for help with PCI-E interrupts. The problem occurs with the
following device:
01:00.0 Network controller: Broadcom Corporation Dell Wireless 1390 WLAN
Mini-PCI Card (rev 01)
Subsystem: Hewlett-Packard Company Unknown device 1363
Flags: bus master, fast devsel, latency 0, IRQ 20
Memory at c3000000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 2
Capabilities: [58] Message Signalled Interrupts: Mask- 64bit- Queue=0/0
Enable-
Capabilities: [d0] Express Legacy Endpoint IRQ 0
Capabilities: [100] Advanced Error Reporting
Capabilities: [13c] Virtual Channel
The card is recognized as of the PCI-E variety and appears to be set up
properly, but interrupts are
not delivered to the driver as shown by the output of 'cat /proc/interrupts':
CPU0 CPU1
0: 4752 1884273 IO-APIC-edge timer
1: 21 6306 IO-APIC-edge i8042
8: 0 2 IO-APIC-edge rtc
9: 249 158866 IO-APIC-fasteoi acpi
12: 3670 846095 IO-APIC-edge i8042
15: 337 65615 IO-APIC-edge ide1
16: 1427 329891 IO-APIC-fasteoi libata
17: 2315 925273 IO-APIC-fasteoi eth0
18: 0 2 IO-APIC-fasteoi ohci1394
19: 3 117 IO-APIC-fasteoi HDA Intel
20: 0 0 IO-APIC-fasteoi ohci_hcd:usb1, bcm43xx
21: 0 0 IO-APIC-fasteoi ehci_hcd:usb2
NMI: 0 0
LOC: 1825978 1826429
ERR: 1
MIS: 0
I'm currently have an i386 system, but the problem is there with an x86_64
system. I've tried the
following boot-time fixups: acpi=noirq, irqfixup, irqpoll, pci=routeirq and a
UP system without any
effect. It did work a couple of times with the x86_64 system, which made me
think it was some kind
of race condition. I have also compared the bcm43xx code with that of the
bcm43xx-d80211 version
that works, but I don't find any differences other than those related to design
changes. I'm
currently working with 2.6.20-rc4, but get the same results with 2.6.18 and
2.6.19, which need a
PCI-E patch to recognize the card.
I would appreciate any suggestions regarding differences between PCI and PCI-E
interrupts.
Thanks,
Larry
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