Date: Fri, 17 Sep 1999 11:33:53 +0900 From: Takanori Watanabe <takawata@shidahara1.planet.sci.kobe-u.ac.jp> To: hackers@freebsd.org Subject: Re: damn ATX power supplies... Message-ID: <199909170233.LAA10868@shidahara1.planet.sci.kobe-u.ac.jp> In-Reply-To: Your message of "Thu, 16 Sep 1999 22:04:26 %2B0200" References: <Pine.BSF.4.10.9909110020500.28670-100000@picnic.mat.net> <19990911103119.4253B1CB1@overcee.netplex.com.au> <E11QHWj-000Cbr-00@fanf.noc.demon.net> <19990916220426.04913@breizh.free.fr>
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In message <19990916220426.04913@breizh.free.fr>, Nicolas Souchu wrote: >On Sun, Sep 12, 1999 at 10:51:13PM +0100, Tony Finch wrote: >> >>Peter Wemm <peter@netplex.com.au> wrote: >>> >>>On newer motherboards, it's addressable on the SMB bus (along with >>>the SIMMS, the LM78/LM75/etc, the embedded LM75 in the newer CPU, >>>etc). Anyway, the newer devices are programmable to do things like >>>the 4-second power off delay, auto-on with AC, maintain previous >>>state when AC restored, alarm clock time auto start, as well as the >>>usual "turn off now" command from the APM bios. I think 4-second power off delay etc. is not so related with SMBus but power management controller on PCI.And that should be probed via ACPI BIOS table,not PCI probe,though I wrote a patch for intpm so that it install power off handler. <URL:http://www.planet.sci.kobe-u.ac.jp/~takawata/smbus/sys/intpmpm.tar.gz>; >>Is there any software out there that speaks to /dev/smb? >>intelligently? We have some Dell boxen with loads of SMB stuff in >>them; it'd be nice to be able to see what's going on there. >> >>Alternatively, are there freely-available SMB specs? > I have some piece of program.(Accessing SPD,LM75/LM78) <URL:http://www.planet.sci.kobe-u.ac.jp/~takawata/smbus/>; But general problem is that there is no way to probe from hardware. And on PIIX4, most hardware monitoring chip have ISA interface and accessable at port 0x295,0x296. BTW I looked datasheet of i810 chipset <URL:http://developer.intel.com/design/chipsets/datashts/29065503.pdf>; and find SMBus functional and Power Management functional is separated. Though I don't write the driver for it because I don't have it. Takanori Watanabe <a href="http://www.planet.sci.kobe-u.ac.jp/~takawata/key.html">; Public Key</a> Key fingerprint = 2C 51 E2 78 2C E1 C5 2D 0F F1 20 A3 11 3A 62 2A P.S. Are there any people to work on audio and telephony device on i810? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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