Hi,
I am looking at a custom card that contains :
- PCIE device that is connected via PCIE bus
- ID PROM that contains power required by the card. ID PROM will be connected via I2C bus.
>From the software side, I should not power on the card if it exceeds the power budget (in both cold plug and hotplug cases)
While looking at acpiphp, I see that this driver automatically powers on the card on HTML clipboardACPI_NOTIFY_BUS_CHECK event.
- HTML clipboard re-enumerate the bus
-- for each slot in the bridge
--- if slot is not enabled, power on the slot and enable the PCI functions on the card.
I wonder where I can add the functionality of reading the IDPROM for power requirement and then tell acpiphp to run on power ?
Will the scheme work in cold plug case (is acpiphp involved in cold plug case) ?
Also is it possible to do this custom functionality in user space and tell acpiphp to continue with its functionality of powering on and enabling PCI functions?
Thanks much.
_________________________________________________________________
Quick access to your favorite MSN content and Windows Live with Internet Explorer 8.
http://ie8.msn.com/microsoft/internet-explorer-8/en-us/ie8.aspx?ocid=B037MSN55C0701A--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
