kern/37848: netbsd doesn't recognized disk with ahci turned on

[shinden%linux.pl@localhost]

>Number:         37848
>Category:       kern
>Synopsis:       netbsd doesn't recognized disk with ahci turned on
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jan 23 11:10:03 +0000 2008
>Originator:     Daniel Horecki
>Release:        current
>Organization:
>Environment:
NetBSD hoth.stars 4.0 NetBSD 4.0 (GENERIC.MP) #0: Sat Dec 15 22:34:19 PST 2007
builds@wb28:/home/builds/ab/netbsd-4-0-RELEASE/amd64/200712160005Z-obj/home/buil
ds/ab/netbsd-4-0-RELEASE/src/sys/arch/amd64/compile/GENERIC.MP amd64
>Description:
NetBSD doesn't recognized disk on sata controller when ahci is turned on in 
BIOS. Disk shows as ST506 with 69MB. After turning off ahci, it shows full 
capacity. It's WDC WD2500BEVS on Intel 82801HEM SATA Controller.
Tested on current boot.iso and 4.0.
>How-To-Repeat:
Try to install NetBSD 4.0 or current.
>Fix: