[Syllable-developer] Test version of an acpi processor driver

[Arno K. <arn...@ya...>]

Hi,

here is an early test version of an acpi processor driver. It currently 
supports the following features (if the hardware supports it, of course):

*C1 (hlt) and C2 idle states
*The C3 idle state is currently supported on uniprocessor systems. The 
same codepath can also be used on intel smp systems and so it should 
work with them, too.
*Frequency scaling using the generic acpi method and using the intel msr 
registers.

You can download it here:

http://www.liqwyd.com/arno/acpi_proc.zip

You can install the package with the install.sh script. It containss the 
following components:

*acpi_processor - The processor driver
*acpi - The acpi busmanager from cvs
*usb_uhci - The uhci controller driver from cvs. It suspends the 
controller if no devicess are attached and this allows the cpu to enter 
lower idle states.
*i855, emu10k1 - Slightly changed versions of these drivers to support 
small changes in the kernel api. The emu10k1 driver has not been tested.
*kernel.so - Kernel with the k7 powernow patches and a function to 
register an external cpu time handler.
*pmset - Called with no parameter it shows the current status. With 
"./pmset <index>" you can set the frequency of the cpu.

Arno