Date: Mon, 23 Aug 2010 02:28:53 -0700 From: perryh@pluto.rain.com To: doconnor@gsoft.com.au Cc: freebsd-hackers@freebsd.org, des@des.no Subject: Re: Winbond Watchdog Message-ID: <4c723f55.IHXUYM9HTnD6uCPO%perryh@pluto.rain.com> In-Reply-To: <C3987FCC-2A29-478C-B503-E048751257CE@gsoft.com.au> References: <4C2B07F5.6030801@delphij.net> <4C2B4D35.8060903@feral.com> <86lj9wmbrz.fsf@ds4.des.no> <4C2BBF3C.4070503@delphij.net> <86hbkkmad1.fsf@ds4.des.no> <4C2BD498.3090704@delphij.net> <86d3v7n093.fsf@ds4.des.no> <4C5D4BFD.9080803@delphij.net> <86ocde8tzd.fsf@ds4.des.no> <AANLkTinMPGdBbTr2ENci5tAHA-omOUgZXU4kbQ60V4U7@mail.gmail.com> <C3987FCC-2A29-478C-B503-E048751257CE@gsoft.com.au>
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"Daniel O'Connor" <doconnor@gsoft.com.au> wrote: > On 23/08/2010, at 1:24, Xin LI wrote: > > 2010/8/7 Dag-Erling Sm?rgrav <des@des.no>: > >> Xin LI <delphij@delphij.net> writes: > >>> I'm still polishing up the driver, there seems to be no way to > >>> figure out the base port address directly (datasheet said it's > >>> either 0x2e and 0x4e) so for now I have its device identify > >>> method to do some dirty hacks (outb/inb directly) and only > >>> check if with appropriate key entered to the port we will get > >>> non-0xff value. > >> > >> Sounds gross, but if there's no other way, I guess it'll have > >> to do. I imagine you check the PCI id etc. first? > > > > It's not a PCI device unfortunately (at least, not the one > > I have encountered on my Supermicro board). > > They're LPC ISA devices, I don't know if they appear in any PNP > or ACPI tables though. Any mainboard device on a non-enumerable bus, including LPC, is _supposed_ to be reported in the ACPI tables -- precisely to avoid the need for drivers to engage in risky probing to find their hardware. That's no guarantee of course -- there are plenty of buggy BIOS around -- but it might be worth looking to see if this one got it right.
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