ahcich timeouts on 10-stable which don't exist on 9.2

[Mathias Picker]

Hi all,

I cannot use my cdrom on 10-stable, which worked fine in 9.2. I just
tried again with a 9.2 live cd, and there it still works.

The cd is showing in 9.2 as:
cd0 at ahcich1 bus 0 scbus1 target 0 lun 0
cd0: <HL-DT-ST DVDRAM GT31N 1.00> Removable CD-ROM SCSI-0 device 
cd0: 150.000MB/s transfers (SATA 1.x, UDMA5, ATAPI 12bytes, PIO
8192bytes)
cd0: Attempt to query device size failed: NOT READY, Medium not present
- tray closed

and camcontrol says:
pass1: <HL-DT-STDVDRAM GT31N 1.00> ATAPI-7 SATA 1.x device
pass1: 150.000MB/s transfers (SATA 1.x, UDMA5, ATAPI 12bytes, PIO
8192bytes)

protocol              ATA/ATAPI-7 SATA 1.x
device model          HL-DT-STDVDRAM GT31N
firmware revision     1.00
serial number         KY2A3G91934
cylinders             0
heads                 0
sectors/track         0
sector size           logical 512, physical 512, offset 0
LBA supported         
LBA48 not supported       
PIO supported         PIO4
DMA supported         WDMA2 UDMA5 

Feature                      Support  Enabled   Value           Vendor
read ahead                     no       no
write cache                    no       no
flush cache                    no       no
overlap                        no
Tagged Command Queuing (TCQ)   no       no
Native Command Queuing (NCQ)   no
SMART                          no       no
microcode download             no       no
security                       no       no
power management               no       no
advanced power management      no       no
automatic acoustic management  no       no
media status notification      no       no
power-up in Standby            no       no
write-read-verify              no       no
unload                         no       no
free-fall                      no       no
Data Set Management (DSM/TRIM) no
Host Protected Area (HPA)      no


All I get in 10-stable is:

Jun 28 18:06:00 marcopolo kernel: ahcich1: Timeout on slot 0 port 0
Jun 28 18:06:00 marcopolo kernel: ahcich1: is 00000002 cs 00000000 ss
00000000 rs 00000001 tfd 50 serr 00000000 cmd 00006017
Jun 28 18:06:00 marcopolo kernel: (aprobe0:ahcich1:0:0:0):
ATAPI_IDENTIFY. ACB: a1 00 00 00 00 40 00 00 00 00 00 00
Jun 28 18:06:00 marcopolo kernel: (aprobe0:ahcich1:0:0:0): CAM status:
Command timeout
Jun 28 18:06:00 marcopolo kernel: (aprobe0:ahcich1:0:0:0): Retrying
command

I'm running:

FreeBSD marcopolo.fritz.box 10.0-STABLE FreeBSD 10.0-STABLE #5 r267361:
Wed Jun 11 17:33:35 CEST 2014
mathiasp at marcopolo.fritz.box:/usr/obj/usr/src/sys/VT  amd64

but this goes on since I installed 10-stable, which was, well, months
ago ;) I just never found the time to check it with 9.2 until now...

This is on an Acer 5553g (amd danube / mobile phenom) machine with the 
AMD RS880 series chipset + SB820 southbridge.


Any ideas, even to just switch off this annoying error msg?


Thanks, Mathias