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

From: Matthew Wilcox <>
Date: 2002-10-25 03:59:14
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.

Revolutions do not require corporate support.
Received on Thu Oct 24 10:59:19 2002

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