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>
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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=3D2.6.0-te= s t2 http://lxr.linux.no/source/drivers/pci/hotplug/cpqphp.h?v=3D2.6.0-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]=20 > Sent: Tuesday, August 12, 2003 8:55 PM > To: Doug White > Cc: freebsd-current@freebsd.org; Petri Helenius > Subject: Re: pci configuration >=20 >=20 > Doug White wrote: > > On Tue, 12 Aug 2003, Petri Helenius wrote: > >=20 > >=20 > >>Is there way to view PCI / PCI-X configuration with=20 > bus-width and clock > >>values when FreeBSD has already booted? > >=20 > >=20 > > If you know where in PCI config space to look you could use=20 > pciconf to > > query it. Can't say I've heard of PCI speed negotiation=20 > issues, though. > >=20 >=20 > 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. >=20 > Scott >=20 > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to=20 > "freebsd-current-unsubscribe@freebsd.org" >=20
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