Date: Tue, 12 Aug 2003 21:46:00 -0500 From: "Cagle, John (ISS-Houston)" <john.cagle@hp.com> To: "Petri Helenius" <pete@he.iki.fi> Cc: freebsd-current@freebsd.org Subject: RE: pci configuration Message-ID: <C50AB9511EE59B49B2A503CB7AE1ABD1067F2327@cceexc19.americas.cpqcorp.net>
index | next in thread | raw e-mail
If you're using a server with the Compaq PCI-X Hot Plug controller, you can read the maximum bus speed and current device speed from the hot plug controller. For details, take a look at the drivers/pci/hotplug/cpqphp.h and drivers/pci/hotplug/cpqphp_core.c files in the latest Linux 2.6 kernel. Here are a couple links: http://lxr.linux.no/source/drivers/pci/hotplug/cpqphp_core.c?v=2.6.0-tes t2 http://lxr.linux.no/source/drivers/pci/hotplug/cpqphp.h?v=2.6.0-test2 Regards, John -------------------------------- John Cagle john.cagle@hp.com Principal Member Technical Staff Industry Standard Servers Hewlett-Packard Company > -----Original Message----- > From: Scott Long [mailto:scottl@freebsd.org] > Sent: Tuesday, August 12, 2003 8:55 PM > To: Doug White > Cc: freebsd-current@freebsd.org; Petri Helenius > Subject: Re: pci configuration > > > Doug White wrote: > > On Tue, 12 Aug 2003, Petri Helenius wrote: > > > > > >>Is there way to view PCI / PCI-X configuration with > bus-width and clock > >>values when FreeBSD has already booted? > > > > > > If you know where in PCI config space to look you could use > pciconf to > > query it. Can't say I've heard of PCI speed negotiation > issues, though. > > > > I'm not aware of any registers in the standard PCI config space that > will tell you the speed of the bus. Some PCI devices will make that > information available, but not in a standard way. The BIOS of some > higher-end systems might also tell you this information. > > Scott > > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to > "freebsd-current-unsubscribe@freebsd.org" >help
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?C50AB9511EE59B49B2A503CB7AE1ABD1067F2327>