Re: [ACPI] device model?

[Patrick M. <mo...@os...>]

> Why doesn't struct acpi_device contain a struct device?

Because they are not devices, only the firmware representation of them. :) 

> I was rather hoping that with the unified device model in 2.5 that I
> could finally model the innards of the zx1 boxes (ie SBA has a bunch of
> HBAs, each of which has a PCI root bus).  But it looks like acpi_device
> isn't part of the unified device model yet.  Is there a reason for this,
> other than lack of time?

struct acpi_device contains a kobject that is registered in 
drivers/acpi/scan.c. The hierarchy is represented in 
/sys/firmware/acpi/namespace.

Ideally, when an ACPI namespace object is found, the bus on which the 
device belongs will be notified of a found device, so that it may probe,
intiialize, and register the device properly. That will give it 
representation in /sys/devices, and ACPI could then provide a symlink 
between its object's directory and the device's directory. 

But, it hasn't happened yet.


	-pat