Talk to device on LPC bus

  • Thread starter Thread starter Mark McDougall
  • Start date Start date
M

Mark McDougall

Hi,

I have a custom device attached to the LPC bus of the ICH7-M. Reading the
datasheet for the ICH7 device family it would appear that I need to enable
an "LPC generic decode range register" in its PCI config space to match
the address range of my hardware.

How do I go about doing this? Is it possible from user-space? I can't find
any information on how one would achieve this - I'm assuming it has
somthing to do with ACPI calls - yes? Any examples around?

TIA
Regards,
Mark
 
Mark,

One of the option could be to write a basic WDM driver for the LPC
device and replace the MS LPC stub driver. Once you have a WDM driver,
now you can access the PCI configuration space from within your driver.

Regards,

Boby
 
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