amd64/130483: MSI must be disabled when Myricom 10Gbps Card is used on Dell PowerEdge T300 Server

[Xiuchao Wu]

>Number:         130483
>Category:       amd64
>Synopsis:       MSI must be disabled when Myricom 10Gbps Card is used on Dell PowerEdge T300 Server
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-amd64
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jan 13 05:10:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Xiuchao Wu
>Release:        FreeBSD 7.0
>Organization:
National University of Singapore
>Environment:
FreeBSD 7.0/7.1 Release
>Description:
Computer: Dell PowerEdge T300 Server
NICs: Myricom 10G-PCIE-8AL-C
OS: FreeBSD 7.0/7.1 Release

After I rebuild the kernel (to include NIC driver "mxge") and reboot, kernel panic occurs and the computer is automatically rebooted. After contacting with engineers of Myricom, they suggest to disable message signaled interrupt (MSI) in /boot/loader.conf and these NICs can work now.
"
hw.pci.enable_msix=0
hw.pci.enable_msi=0
"

However, MSI is really very important for high speed data transmission. Huge number of packets generate many interruptions. Considering that Fedora 9 works well on the same computer, it may be a bug of FreeBSD. Below is the screen when kernel panic occurs.


......
p4tcc3: <CPU Frequency Thermal Control> on cpu3
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> at device 2.0 on pci0
pci3: <ACPI PCI bus> on pcib1
pcib2: <ACPI PCI-PCI bridge> at device 3.0 on pci0
pci4: <ACPI PCI bus> on pcib2
pcib3: <ACPI PCI-PCI bridge> at device 4.0 on pci0
pci5: <ACPI PCI bus> on pcib3
mxge0: <Myri10G-PCIE-8A> mem 0xd8000000-0xd8ffffff, 0xdfa00000-0xdfafffff irq 16 at device 0.0 on pci5
panic: nexus_add_irq: failed
.....




Best Regards,
Xiuchao Wu (wuxiuchao at gmail.com)

>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: