Re: [Pcihpd-discuss] do I need ACPI to detect hot plugged cpci cards?

[Florea Igor <igor.florea@topex.ro>]

Hi Scott

> It might be worth seeing if the apcihp driver works on the CP-306.
it works fine 
> >   	list_for_each_entry(slot, &slot_list, slot_list){
> > 		if (slot->extracting) {
> > 			disable_slot(slot->hotplug_slot);
> > 		}
> The intent of the driver is that a userspace component detects the
> extracting state, does any required software shutdown, and then drives
> the extract (i.e. disable_slot) by writing a 0 to the "power" node for
> the slot in sysfs.
I cannot get disable_slot called when i
echo 0 > /sys/bus/pci/devices/0000\:04\:0d.0/power/state
i don't know why.. so i let it with explicit call to disable_slot ..it does 
not bother me much.. but i would like to do it in the ritgh way.. the user 
program have to poll the enum bit of enum port? it is already done by 
cpcihp_generic driver..

> > I also have to expand the code  to support all my 3 hotplug controllers 
> > (one on another ..as is seen in my lspci ) if you have some warnings for
> > me..please let me know..
>
> If you have 3 separate hotplug controllers (separate ENUM# signalling),
> watching different buses, then the current driver won't handle that
> without some significant rework.  If there is only a single ENUM#
> interrupt or signal for 3 buses, then that can be made to work by
> calling cpci_hp_register_bus for the 3 buses.  If you can provide a bit
> more detail on what the hardware looks like, I can likely come up with
> an idea of how the driver needs to change to support it.
Good Idea!!
I did not notice that i can register only buses .. i implemented all the stuff 
to also register all the controllers .. and can
echo 0 > /sys/bus/pci/devices/0000\:04\:0d.0/power/state
work if i registered only one controller?
(anyway this part does not work now..so i could register only one..)

I have  3 hotplug controllers with one ENUM# signal (port 0x0286 bit 2)...and 
if i had 3 separate ENUM# sources i should only change the query_enum 
function..

tanks
Igor



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