kern/174880: ATI SB600 AHCI problem on BSD 8 and above

[NIKA]

>Number:         174880
>Category:       kern
>Synopsis:       ATI SB600 AHCI problem on BSD 8 and above
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jan 01 12:40:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     NIKA
>Release:        8.3 / 9.1
>Organization:
>Environment:
not possible
>Description:
I have a bug when installing BSD 8.3 and 9.1 on my ASUS A7U notebook (ATI RS690 chipset, SB600 south bridge). I get a message:

ahcich1: Timeout on slot 0 port 0 is 00000002 cs 00000000 ss 00000000 rs 00000001 tfd 50 serr 00000000 cmd 00042017.

So, install program can not see my hard drive, and can not resume install. My BIOS does not have option to switch to PATA mode, so AHCI is required.

In same time, BSD 7.4 can see it. With BSD 7.4 is no problem. Clearly, some bug in AHCI or ATA-ATI driver appeared in 8R.

I am interested to use PCBSD, but can not do it. Please, help.
>How-To-Repeat:
Try to run install program on ASUS A7U :)
>Fix:


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