kern/99652: nVidia controller hangs w/ 2 drives.

[David Gilbert]

>Number:         99652
>Category:       kern
>Synopsis:       nVidia controller hangs w/ 2 drives.
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Jun 30 16:30:19 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     David Gilbert
>Release:        FreeBSD 6.1-STABLE i386
>Organization:
DaveG.ca
>Environment:
FreeBSD virtual.accountingreality.com 6.1-RELEASE-p2 FreeBSD 6.1-RELEASE-p2 #2: Wed Jul 26 22:50:39 EDT 2006     root at virtual.accountingreality.ca:/usr/obj/usr/src/sys/VR  amd64
are connected
>Description:
This machine has an onboard

atapci0: <nVidia nForce MCP51 UDMA133 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xffa0-0xffaf at device 13.0 on pci0

and if one drive is connected, everything is fine.  If two drives
are connected, it hangs after detecting the first drive.  The drives in
question are both

ad4: 238475MB <SAMSUNG SP2504C VT100-33> at ata2-master SATA300

>How-To-Repeat:
Attach two drives to the controller
>Fix:

None known.


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