RFC: ATA to CAM integration patch (and gjournaled previuos nodes)

[Harald Schmalzbauer]

Alexander Motin schrieb am 07.07.2009 21:06 (localtime):
...
Thanks for your aeplanations!

>> Feature                      Support  Enable    Value           Vendor
>> write cache                    yes    no
>> read ahead                     yes    no
> 
> It is probably the truth. Existing ATA driver enables this features 
> during drive reset sequence. New one doesn't do it yet.

Ic, but my "real" HD ast it enabled:

camcontrol iden ada1
pass2: <SAMSUNG HD322HJ 1AG01113> ATA/ATAPI-7 SATA 2.x device

Protocol              SATA revision 2.x
device model          SAMSUNG HD322HJ
serial number         S17AJ9AS305229
firmware revision     1AG01113
cylinders             16383
heads                 16
sectors/track         63
lba supported         268435455 sectors
lba48 supported       625142448 sectors
dma supported
overlap not supported

Feature                      Support  Enable    Value           Vendor
write cache                    yes	yes
read ahead                     yes	yes
Native Command Queuing (NCQ)   yes	 -	31/0x1F
Tagged Command Queuing (TCQ)   no	no	31/0x1F
SMART                          yes	yes
microcode download             yes	yes
security                       yes	no
power management               yes	yes
advanced power management      yes	no	0/0x00
automatic acoustic management  yes	no	0/0x00	254/0xFE

Does the old school HD enable caches itself?

Thanks,

-Harry

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