Hi Jean, On Tue, Jul 15, 2008 at 2:36 AM, Jean Delvare <khali at linux-fr.org> wrote: >> Is there any way to use lspci and start at the LPC bridge, then find >> the SuperIO chip's IO address? What about ACPI tables? Perhaps probing >> logic could look for an LPC bridge before probing certain IO addresses >> even if the addresses are not in the LPC bridge config. > > I always assumed that there was no way to know in advance if a > Super-I/O (LPC) chip was present or not, let alone the exact model of > the chip. The I/O addresses are decoded by the Super-I/O chip itself, > and in general it has no relation to PCI. And I've never seen ports > 0x2e/0x2f nor 0x4e/0x4f listed in /proc/ioports. > > But of course if there is a way to know, we should use it. Avoiding > random access to I/O ports, even if they are relatively standard in > this case, is always good. I looked at my lspci output and did a little researching, and I think the only thing we can deduce is that there is an LPC bridge, so looking for a SuperIO is a good idea. If there is no LPC bridge listed, I can't say whether probing the ports is a good idea or not. David
