Hi!
First, sorry for long reply time. I had too many horses and not enough
time.
> >>Can you check if there is any difference between [D/H]IPS and static?
> >>ICH6M on my notebook can't do DIPS/HIPS, so I couldn't compare them
> >>against static.
> >
> >What is D/HIPS? I could not find anything relevant..
>
> D/HIPS stand for device/host initiated power saving. These modes use
> two SATA link powersaving state (partial and slumber). Static mode
> simply turns off PHY on unoccupied port using SControl register. So, if
> you have an access to a notebook which has a SATA dock which support
> link powersaving, you can test it by...
>
> * set link powersaving mode to HIPS/static. (mode 4)
>
> * w/ device inserted, leave it idle for 15 seconds and record power
> consumption level (link should be in slumber state).
>
> * pull out the device, wait for libata to detach the device and record
> power consumption level (libata should have turned off PHY after
> detaching the device).
>
> I wanna know whether there is any difference in the amount of power
> saved between slumber and off states.
I'm probably doing something wrong, but...
I'm on commit
commit 9a7b050525f7d70d2ed62affb691b9d4ca2b82d2
tree b8195e5625dc5bad6757b0dddec0dacf416a0779
parent 50c3086de212ce56eaa2bf284586fb021615b5e1
author Tejun Heo <[email protected]> Mon, 16 Oct 2006 07:24:57 +0900
committer Tejun Heo <[email protected]> Mon, 16 Oct 2006 07:24:57 +0900
[PATCH] sata_sil24: implement PORT_RST
As DEV_RST (hardreset) sometimes fail to recover the controller
(especially after PMP DMA CS errata). In such cases, perform
PORT_RST
prior to DEV_RST.
Signed-off-by: Tejun Heo <[email protected]>
(2.6.19-rc1)
and I do not see powersave tunable:
root@amd:/sys/module# ls libata/parameters/
ata_probe_timeout atapi_enabled hotplug_polling_interval
atapi_dmadir fua
...how do I pull working version?
> >>So, I think option #1 is the way to go - implementing leveled dynamic
> >>power management infrastructure and adding support in the block layer.
> >>What do you think?
> >
> >Would be nice :-).
>
> So, do you think we're ready for another PM infrastructure update? :-P
Well... things are pretty quiet in that area just now... So yes.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
