Date: Sat, 14 Aug 1999 15:23:40 +0200 From: Nicolas Souchu <nsouch@teaser.fr> To: David Gilbert <dgilbert@velocet.ca> Cc: freebsd-hardware@FreeBSD.ORG Subject: Re: smbus not quite right? Message-ID: <19990814152340.02863@breizh.teaser.fr> In-Reply-To: <14239.10592.948209.726743@trooper.velocet.ca>; from David Gilbert on Wed, Jul 28, 1999 at 12:01:36PM -0400 References: <199907190324.XAA08403@strike.velocet.ca> <19990724180824.18086@breizh.teaser.fr> <14239.10592.948209.726743@trooper.velocet.ca>
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On Wed, Jul 28, 1999 at 12:01:36PM -0400, David Gilbert wrote: > >>>>>> "Nicolas" == Nicolas Souchu <nsouch@teaser.fr> writes: > >Nicolas> On Sun, Jul 18, 1999 at 11:24:05PM -0400, dgilbert@velocet.ca >Nicolas> wrote: >>> I have a machine with a P5A motherboard, which probes as follows: >>> >>> pcf0: <PCF8584 I2C bus controller> iicbus0: <Philips I2C bus> on >>> pcf0 addr 0xaa iicsmb0: <I2C to SMB bridge> on iicbus0 smbus0: >>> <System Management Bus> on iicsmb0 smb0: <SMBus general purpose >>> I/O> on smbus0 iic0: <I2C general purpose I/O> on iicbus0 >>> >>> Now... If I run mbmon in ISA mode, which opens /dev/io, it works. >>> If I run it in in smbus mode, which opens /dev/smb0, it fails. >>> Having read the documentation on /dev/io, I'd rather not have that >>> ability on a server... I would guess that it requires an insecure >>> level. > >Nicolas> Whats mbmon? You have actually a Philips PCF8584 connected to >Nicolas> your ISA bus? > >mbmon is a little application (inside a xmbmon tarball) that probes >this chipset for information. I don't actually know any details about >my chipset per se, but it would appear that I do have a pcf8584... Ok. /dev/smb0 is completly different than /dev/io. /dev/smb0 supports SMB protocol commands thanks to appropriate ioctls. /dev/io only supports low-level outb/inb operations. > >Dave. > >-- >============================================================================ >|David Gilbert, Velocet Communications. | Two things can only be | >|Mail: dgilbert@velocet.net | equal if and only if they | >|http://www.velocet.net/~dgilbert | are precisely opposite. | >=========================================================GLO================ > -- nsouch@teaser.fr / nsouch@freebsd.org FreeBSD - Turning PCs into workstations - http://www.FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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