kern/47864: pci bus problems

[6bone%6bone.informatik.uni-leipzig.de@localhost]

>Number:         47864
>Category:       kern
>Synopsis:       pci bus problems
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed May 29 09:50:00 +0000 2013
>Originator:     Uwe Toenjes
>Release:        NetBSD 6.1
>Organization:
University of Leipzig
>Environment:
NetBSD gate.ipv6.uni-leipzig.de 6.1 NetBSD 6.1 (MYCONF) #4: Wed May 15 21:05:45 
CEST 2013  
root%ipv6event.rz.uni-leipzig.de@localhost:/usr/obj/sys/arch/amd64/compile/MYCONF
 amd64
>Description:
I am using a Dell 1850 with the following hardware/pci configuration:

00:00.0 Host bridge: Intel Corporation E7520 Memory Controller Hub (rev 09)
00:02.0 PCI bridge: Intel Corporation E7525/E7520/E7320 PCI Express Port A (rev 
09)
00:04.0 PCI bridge: Intel Corporation E7525/E7520 PCI Express Port B (rev 09)
00:05.0 PCI bridge: Intel Corporation E7520 PCI Express Port B1 (rev 09)
00:06.0 PCI bridge: Intel Corporation E7520 PCI Express Port C (rev 09)
00:1d.0 USB controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI 
Controller #1 (rev 02)
00:1d.1 USB controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI 
Controller #2 (rev 02)
00:1d.2 USB controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI 
Controller #3 (rev 02)
00:1d.7 USB controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI 
Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2)
00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface 
Bridge (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE Controller 
(rev 02)
01:00.0 PCI bridge: Intel Corporation 80332 [Dobson] I/O processor (A-Segment 
Bridge) (rev 06)
01:00.2 PCI bridge: Intel Corporation 80332 [Dobson] I/O processor (B-Segment 
Bridge) (rev 06)
02:0c.0 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet 
Controller (rev 03)
02:0c.1 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet 
Controller (rev 03)
02:0e.0 RAID bus controller: Dell PowerEdge Expandable RAID controller 4 (rev 
06)
03:0b.0 Ethernet controller: Intel Corporation 82544EI Gigabit Ethernet 
Controller (Copper) (rev 02)
05:00.0 PCI bridge: Intel Corporation 6700PXH PCI Express-to-PCI Bridge A (rev 
09)
05:00.2 PCI bridge: Intel Corporation 6700PXH PCI Express-to-PCI Bridge B (rev 
09)
06:07.0 Ethernet controller: Intel Corporation 82541GI Gigabit Ethernet 
Controller (rev 05)
07:08.0 Ethernet controller: Intel Corporation 82541GI Gigabit Ethernet 
Controller (rev 05)
09:05.0 Unassigned class [ff00]: Dell Remote Access Card 4 Daughter Card
09:05.1 Unassigned class [ff00]: Dell Remote Access Card 4 Daughter Card 
Virtual UART
09:05.2 Unassigned class [ff00]: Dell Remote Access Card 4 Daughter Card SMIC 
interface
09:06.0 IDE interface: Silicon Image, Inc. PCI0680 Ultra ATA-133 Host 
Controller (rev 02)
09:0d.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RV100 
QY [Radeon 7000/VE]

The problem is PCI bus 2. If I only use the network card or only the Raid 
Controller (PERC) there are no problems. Both devices are used together 
increases the load of the system to 300 or more. In some cases, the system 
freezes.
>How-To-Repeat:

>Fix: