Dan Irwin
2010-Nov-25 23:34 UTC
[CentOS] PE850 Interrupt conflicts on CentOS 5 and onboard ethernet and pci-e serial
Hello,
I have an interrupt conflict between a two port pci-e serial card and
the onboard ethernet controllers in a PowerEdge 850.
I'm running kernel 2.6.18-194.26.1.el5PAE with bios revision A04.
In every instance, the two serial ports have been allocated the same
interrupts as the two ethernet controllers.
I have tried many kernel boot options, including acpi=off, pci=noirq,
acpi=noirq.
When I enter the bios, I can see the same interrupts allocated to the
serial ports and ethernet controllers. Attempting to change the
interrupts manual causes both a nic and a serial port to both change,
both to the same interrupt.
I have even tried disabling onboard usb and serial with no change.
I'm beginning to think the pci-e serial card is broken under linux. I
have a similar card running on a PE850 under Windows Server 2003 and
there are no such conflicts.
Here is some output from lspci -v :
02:00.0 Serial controller: Oxford Semiconductor Ltd OX16PCI954 (Quad
16950 UART) function 0 (Uart) (prog-if 06 [16950])
Subsystem: Oxford Semiconductor Ltd Unknown device 0001
Flags: medium devsel, IRQ 137
I/O ports at ecf8 [size=8]
Memory at feaff000 (32-bit, non-prefetchable) [size=4K]
I/O ports at ece0 [size=16]
Memory at feafe000 (32-bit, non-prefetchable) [size=4K]
Memory at feafd000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 1
02:01.0 Serial controller: Oxford Semiconductor Ltd OXCB950 Cardbus
16950 UART (prog-if 06 [16950])
Subsystem: Oxford Semiconductor Ltd Unknown device 0001
Flags: medium devsel, IRQ 145
I/O ports at ecf0 [disabled] [size=8]
Memory at feafc000 (32-bit, non-prefetchable) [disabled]
[size=4K]
I/O ports at ecd0 [disabled] [size=16]
Memory at feafb000 (32-bit, non-prefetchable) [disabled]
[size=4K]
Memory at feafa000 (32-bit, non-prefetchable) [disabled]
[size=4K]
Capabilities: [40] Power Management version 1
05:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721
Gigabit Ethe
rnet PCI Express (rev 11)
Subsystem: Dell Unknown device 01b6
Flags: bus master, fast devsel, latency 0, IRQ 137
Memory at fe5f0000 (64-bit, non-prefetchable) [size=64K]
Expansion ROM at <ignored> [disabled]
Capabilities: [48] Power Management version 2
Capabilities: [50] Vital Product Data
Capabilities: [58] Message Signalled Interrupts: 64bit+ Queue=0/3
Enable
-
Capabilities: [d0] Express Endpoint IRQ 0
Capabilities: [100] Advanced Error Reporting
Capabilities: [13c] Virtual Channel
06:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721
Gigabit Ethe
rnet PCI Express (rev 11)
Subsystem: Dell Unknown device 01b6
Flags: bus master, fast devsel, latency 0, IRQ 145
Memory at fe3f0000 (64-bit, non-prefetchable) [size=64K]
Expansion ROM at <ignored> [disabled]
Capabilities: [48] Power Management version 2
Capabilities: [50] Vital Product Data
Capabilities: [58] Message Signalled Interrupts: 64bit+ Queue=0/3
Enable
-
Capabilities: [d0] Express Endpoint IRQ 0
Capabilities: [100] Advanced Error Reporting
Capabilities: [13c] Virtual Channel
I'm fairly stumped, and I'm about ready to try different serial
hardware.
Any clues from the experts on this list?
Regards,
Dan
------
dan irwin
it manager
jackie's wholesale nurseries p/l t/a
zoomgarden
56 coutts drive burpengary qld 4505
email dan at jackies.com.au
tel 07 3888 2481
fax 07 3888 2530
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Eero Volotinen
2010-Nov-26 00:07 UTC
[CentOS] PE850 Interrupt conflicts on CentOS 5 and onboard ethernet and pci-e serial
> I'm fairly stumped, and I'm about ready to try different serial hardware. > > Any clues from the experts on this list? >Are you using latest centos release and kernel? Try updating bios to latest version?> ************************************************************************ > > Jackie's Legal Disclaimer: > > >Please, do not post legal disclaimers to mailinglists. -- Eero, RHCE -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20101126/579ba42c/attachment-0001.html>
Dan Irwin
2010-Nov-26 00:20 UTC
[CentOS] PE850 Interrupt conflicts on CentOS 5 and onboard ethernet and pci-e serial
Hello, The kernel was updated today to the latest, but I have also tried the previous few kernels. The machine was recently updated to the latest bios revision for a PE850 (A04) which was included in my post. I apologise for posting the corporate email sig, but your post really isn't much better. Do you have any real advice or experience with this model of server running CentOS/RHEL? Or were you only really posting to complain about my sig and disclaimer? Regards, Dan (Posting in plain text mode just in case someone out there still reads with pine or elm) From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On Behalf Of Eero Volotinen Sent: Friday, 26 November 2010 10:07 AM To: CentOS mailing list Subject: Re: [CentOS] PE850 Interrupt conflicts on CentOS 5 and onboard ethernet and pci-e serial I'm fairly stumped, and I'm about ready to try different serial hardware. Any clues from the experts on this list? Are you using latest centos release and kernel? Try updating bios to latest version? ? ************************************************************************ Jackie's Legal Disclaimer: Please, do not post legal disclaimers to mailinglists. -- Eero, RHCE