How to enable NCQ on freebsd 8.1 ?

[Nickolay Krylov]

Hi, all.

I have enabled "options ATA_CAM" in the generic kernel and now can't understand
NCQ works or not.

There is some info.

# uname -a
FreeBSD  8.1-RELEASE FreeBSD 8.1-RELEASE #1: Mon Jul 26 11:58:32 UTC
2010     nk@:/usr/obj/usr/src/sys/BOOT81A  amd64

# camcontrol devlist
<ST31000524NS SN11>                at scbus2 target 0 lun 0 (ada0,pass0)
<ST31000524NS SN11>                at scbus3 target 0 lun 0 (ada1,pass1)
<ST31000524NS SN11>                at scbus4 target 0 lun 0 (ada2,pass2)
<ST31000524NS SN11>                at scbus5 target 0 lun 0 (ada3,pass3)

# camcontrol tags ada0 -v
(pass0:ata2:0:0:0): dev_openings  1
(pass0:ata2:0:0:0): dev_active    0
(pass0:ata2:0:0:0): devq_openings 1
(pass0:ata2:0:0:0): devq_queued   0
(pass0:ata2:0:0:0): held          0
(pass0:ata2:0:0:0): mintags       32
(pass0:ata2:0:0:0): maxtags       32

# camcontrol identify ada0
pass0: <ST31000524NS SN11> ATA-8 SATA 2.x device
pass0: 300.000MB/s transfers (SATA 2.x, UDMA5, PIO 8192bytes)

protocol              ATA/ATAPI-8 SATA 2.x
device model          ST31000524NS
firmware revision     SN11
serial number         9WK05TA2
WWN                   5000c5001fe537d6
cylinders             16383
heads                 16
sectors/track         63
sector size           logical 512, physical 512, offset 0
LBA supported         268435455 sectors
LBA48 supported       1953525168 sectors
PIO supported         PIO4
DMA supported         WDMA2 UDMA6
media RPM             7200

Feature                      Support  Enable    Value           Vendor
read ahead                     yes      yes
write cache                    yes      yes
flush cache                    yes      yes
overlap                        no
Tagged Command Queuing (TCQ)   no       no
Native Command Queuing (NCQ)   yes              32 tags
SMART                          yes      yes
microcode download             yes      yes
security                       yes      no
power management               yes      yes
advanced power management      no       no      0/0x00
automatic acoustic management  no       no      0/0x00  254/0xFE
media status notification      no       no
power-up in Standby            no       no
write-read-verify              yes      no      0/0x0
unload                         no       no
free-fall                      no       no
data set management (TRIM)     no


# cat /var/run/dmesg.boot | grep ada
ipfw2 (+ipv6) initialized, divert loadable, nat loadable, rule-based
forwarding enabled, default to accept, logging disabled
ada0 at ata2 bus 0 scbus2 target 0 lun 0
ada0: <ST31000524NS SN11> ATA-8 SATA 2.x device
ada0: 300.000MB/s transfers (SATA 2.x, UDMA5, PIO 8192bytes)
ada0: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
ada1 at ata3 bus 0 scbus3 target 0 lun 0
ada1: <ST31000524NS SN11> ATA-8 SATA 2.x device
ada1: 300.000MB/s transfers (SATA 2.x, UDMA5, PIO 8192bytes)
ada1: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
ada2 at ata4 bus 0 scbus4 target 0 lun 0
ada2: <ST31000524NS SN11> ATA-8 SATA 2.x device
ada2: 300.000MB/s transfers (SATA 2.x, UDMA5, PIO 8192bytes)
ada2: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
ada3 at ata5 bus 0 scbus5 target 0 lun 0
ada3: <ST31000524NS SN11> ATA-8 SATA 2.x device
ada3: 300.000MB/s transfers (SATA 2.x, UDMA5, PIO 8192bytes)
ada3: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
Trying to mount root from ufs:/dev/ada0s1a

This system installed on Tyan Tomcat K8E motherboard.