SMBus controller

[Sean Bruno]

I note that my TLenovo 61 has one of these:

ichsmb0 at pci0:0:31:3:	class=0x0c0500 card=0x20a917aa chip=0x283e8086
rev=0x03 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82801H (ICH8 Family) SMBus Controller'
    class      = serial bus
    subclass   = SMBus


I'm pretty ignorant here, and I had to manually load ichsmb(4) to get it
detected.  How can I see what's on here and what its purpose for
existence might be.

seaan