パワーManagement interface for Solaris device driver
Please refer tohttp://blogs.sun.com/randyf/entry/more_パワーto_for original post.
More Power to You
Typeically、I wonder if my posts are more more snippits of tidbits（ahh、Kibles and Bits！！！！）、but here is a bit more.
The Solaris operatentenvironment supports various aspects of power management、including Suspend Resumve（a.k.a.CheckPoint Resume、or CPR）、and so so so will Solaris on x 86（much of whihihich thethethetheregogogogogogogogotttttttgogogogogogogogogogogogogogogogogogogogogogogogogogogogogogogogogottttttttttttttttttttttttttttttttttttttttttttttmanagement interfaces: DDI_SUSPEND（a flags passed to detatch（9 e）） DDI_RESUME パワー（9 e） Musch on these interfaces can be found at http://docs.sun.com、or on the relevant man pages for the atch（9 e）、detatch（9 e）、and power（9 d）man pages.
But in a nutshell，DDI_SUSPEND and DDI_RESUME cases shuted handle the saving and restoring of handware state before a device is shutdown or restored after a shutdown.And power(9 e)isthe procedure that Power Management frame Frame functions will will atwork protement atwork protement atwork protement atwork
the power(9 e)entry point also works in conjunction with: pm_lower.パワー（9 f）-Lower power on a component pm_レイセ.パワー（9 f）-Raise power on a component pm_busy_component(9 f)-Indicate that the component is busy pm_idle_component(9 f)-Indicate that the component is idle pm_クリアードcomponents(9 f)-Create mage ble components pm_デストロイcomponents(9 f)-Destroy managerble components So are you writing a driver，and expect it to work with Solaris Power Management.Well，the first and most import part of this equasion is that you Must implement the DDISUSPEND and DDI_RESUME command the atch and detach routines.And in this section of the code，it is impotant to taken from the hardware，and save it into neker memory
And shoud your driver be able to handle various powers states、say a laptop frame ebuffer that allows for the backligh to be atch lower intens、or a disk driver that allows for the drive spinment the mantroutines above(gotta register the components、and let the Solaris power management frameew know when the y are idle)
But alas、this may be a lot of thinking for a day、so maybe it is time for a California Pale Ale！オーケー、there really isn't a category fora California Pale Ale、but one of the classic Pale Ales from California、isthe Sierra Nevada Pale Ale.Light and crisp、with a hit of Hop fright iness.A great ale for fine.A.da.fane.
And sometime later、I will add some more details to Power Mangement Do ou have some questions or suggaestions、just add a comment、I will happily elabort more！
More Power to You
Typeically、I wonder if my posts are more more snippits of tidbits（ahh、Kibles and Bits！！！！）、but here is a bit more.
The Solaris operatentenvironment supports various aspects of power management、including Suspend Resumve（a.k.a.CheckPoint Resume、or CPR）、and so so so will Solaris on x 86（much of whihihich thethethetheregogogogogogogogotttttttgogogogogogogogogogogogogogogogogogogogogogogogogogogogogogogogogottttttttttttttttttttttttttttttttttttttttttttttmanagement interfaces:
But in a nutshell，DDI_SUSPEND and DDI_RESUME cases shuted handle the saving and restoring of handware state before a device is shutdown or restored after a shutdown.And power(9 e)isthe procedure that Power Management frame Frame functions will will atwork protement atwork protement atwork protement atwork
the power(9 e)entry point also works in conjunction with:
xxx_detach() [
switch (cmd) {
case DDI_SUSPEND:
/* Save hardware state */
if (OK)
return (DDI_SUCCESS);
else
return (DDI_FAILURE);
break;
case DDI_DETACH:
/* Do attach processing */
if (OK)
return (DDI_SUCCESS);
else
return (DDI_FAILURE);
break;
default:
/* Shouldn't be here */
return (DDI_VAILURE);
}
xxxattach() {
case DDI_RESUME:
/* Restore hardware state */
/* See the return related information in detach */
break;
case DDI_DETACH:
/* Do attach processing */
default:
/* Shouldn't be here */
return (DDI_FAILURE);
}
And shoud your driver be able to handle various powers states、say a laptop frame ebuffer that allows for the backligh to be atch lower intens、or a disk driver that allows for the drive spinment the mantroutines above(gotta register the components、and let the Solaris power management frameew know when the y are idle)
But alas、this may be a lot of thinking for a day、so maybe it is time for a California Pale Ale！オーケー、there really isn't a category fora California Pale Ale、but one of the classic Pale Ales from California、isthe Sierra Nevada Pale Ale.Light and crisp、with a hit of Hop fright iness.A great ale for fine.A.da.fane.
And sometime later、I will add some more details to Power Mangement Do ou have some questions or suggaestions、just add a comment、I will happily elabort more！