sorry typo. TAKE 2! Hi,
Thank you for taking interest. I see no chance of that happening as I'm only _using_ two down stream ports of my pci switch. Upstream, I only use one port to connect the host pci bridge. Internally, it divides into multiple bridges. I'm thinking of walking upstream only _up_to_ the entry pci bridge of the switch and not any further. On Thu, Jul 17, 2014 at 2:37 PM, Amerei Acuna <[email protected]> wrote: > Hi, > > Thank you for taking interest. I see no chance of that happening as I'm > only two down stream ports of my pci switch. Upstream, I only use one port > to connect the host pci bridge. Internally, it divides into multiple > bridges. I'm thinking of walking downstream only _up_to_ the entry pci > bridge of the switch and not any further. > > Please see chart for clearer explanation of topology I'm working on. > > http://www.electronicproducts.com/images2/FAJH_PLX_3_Nov2008.gif > > > ~amerei > > > On Thu, Jul 17, 2014 at 12:47 PM, <[email protected]> wrote: > >> On Thu, 17 Jul 2014 05:58:03 +0800, Amerei Acuna said: >> >> > I'm writing a custom PCI driver for a hobby endpoint. Due to some >> > "special", possibly unique, circumstance, I need to determine if two >> > devices form a pair. As I'm using a PCI switch to connect these two >> > devices, I'm thinking on the possibility of checking if the two devices >> > share a common pci-pci bridge (or finding the least common ancestor in a >> > directed graph). >> >> What happens if your two devices and a totally unrelated PCI device >> are all three downstream of the same PCI bridge? >> >> >
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