Messages in this thread | | | Date | Wed, 17 Oct 2007 17:37:03 -0600 | From | Robert Hancock <> | Subject | Re: Understanding lspci output |
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John Sigler wrote: >>> 4. Does the system have a PCI-X bus? >> >> Yes, the devices on bus 01 are PCI-X devices, so there is a PCI-X bus. > > I thought PCI-X devices could operate on a PCI bus? If that is true, > then the presence of a PCI-X device would not necessarily imply the > presence of a PCI-X bus, right? > > There are no external PCI-X slots in the system, only 2 PCI slots. > The 4 NICs are integrated to the motherboard. > http://advantech.com/products/1U-Rackmount-Intel-Pentium-4Processor-based-Platform-with-4PCI-LAN-Ports-2-PCI-Expansion-Slots/mod_1-23A2W4.aspx
The NICs are all PCI-X devices and they report "64bit+" so they will be running on a PCI-X bus internally.
> > >>> 2. Do any of the PCI buses support 66 MHz operation? >> >> Yes, PCI-X does. > > So the 01:0f.0 device (Multimedia video controller) is on the same bus > as the 4 PCI-X devices and will have to share the bus bandwidth? > > Does 66MHz+ in the Status line means this device is running at 66 MHz?
I believe so.
> >>> 3. Do any of the PCI slots support 64-bit data path? >> >> This cannot be inferred from the lspci output -- there is no way how to >> tell if a bus has physical slots or it exists only internally. > > Can I use lspci to see whether a specific PCI device is using a 64-bit > data path? (e.g. the 01:0f.0 device)
The "Multimedia video controller: DekTec Digital Video B.V. DTA-105" doesn't report PCI-X capabilities. And looking at the card on their web site, it does not have a 64-bit extension, so it doesn't support 64-bit.
-- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/
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