Tejun Heo wrote:
Hello, all. This is the first take of powersave patchset. It implements runtime link-level power management. To avoid confusion with regular device/controller power management (suspend/resume), it's callsed powersave. It primarily implements partial/slumber/phy-off power states SATA standard specifies but if LLD has different way of implementing link powersave, it's allowed to. Both host-initiated and device-initiated operations are supported. This patchset contains the following patches. #01-07 : misc fixes/preps for powersave #08-10 : implements core powersave infrastructure #11-12 : implement powersave feature for ahci and sata_sil24 Powersave can be configured at boot time or while running by writing to kernel module parameter /sys/module/libata/parameters/powersave. The following powersave modes are supported. * none : no powersave, link is powered up all the time * HIPS : host-initiated powersave * DIPS : device-initiated powersave * static : no powersave on occupied link, power off empty link * HIPS/static : HIPS on occupied link, power off empty link * DIPS/static : DIPS on occupied link, power off empty link For more information, please read head messages of individual patches. All supported modes are tested on ICH7R AHCI, ICH6M AHCI, SiI3124, SiI3132. Unfortunately SiI3112/4 family controllers don't support HIPS and choke on DIPS and thus dropped from supported list.
Any chance you tried ata_piix static PS, using PCS register? :) Jeff - : send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
