Re: [Linux-ia64] RE: PCI Hotplug Drivers for 2.5

Matthew Wilcox
2002-10-24T17:59:14Z

On Thu, Oct 24, 2002 at 10:40:05AM -0700, Lee, Jung-Ik wrote:
> **resource management**
> Non-ACPI platforms uses $HRT/EBDA, pcibios_*(), SMBIOS, etc. for slot
> enumeration/configuration.
> DIG64/ACPI, and SHPC requires ACPI for this. IPF platforms only have ACPI
> _CRS, _PRT, _HPP, _BBN, _STA, _ADR, _SUN, etc on the namespace for PHP, and
> we have to use them. (as a side note, this functionality is common for other
> hotplug-* as mentioned in first mail. No API will be common for
> hotplug-everything, but functionality is common and has not to be
> duplicated)

> **event management in terms of controller/slot operations **
> ACPI provides only _EJ0, _PS?, _STA, etc for slot operations but these are
> not mandatory. That means, we can use either ACPI method or controller
> driver.
> intcphp driver has not enabled ACPI method based solution but uses
> controller driver.
> intcphp driver is also capable of performing ACPI method based solution
> since it works on ACPI namespace. This is why acpiphp and intcphp could be
> sharing resource management and event management.

Sounds like we want a library of ACPI code that can be used by individual
drivers rather than an ACPI driver with pluggable event management
functions then.

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