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Slot number in Desk-top - huh?
I'm confused as to how the original question deviated into the IRQ's,
unless I misunderstood the original question. I thought Dinesh asked the
following question (paraphrasing):
I have a board plug into PCI/PCIX/ et al.
How does the driver determine the physical
location of that board?
My private answer to him went as follows:
You can't. This is a fundamental problem with PCI and it is a problem we
have all the time. On a PCI bus, you can figure what board is plugged in,
but it is impossible to determine which physical slot the board is plugged
into. This is all PCI, not just Sun. This can be quite troublesome if you
put two of the same boards into a system and, for example, they get cabled
differently to something external.
The only way to solve this is to put a DIP switch on the PWB or add some
sort of an ID to the circuit. Upon installation, the user (or other) must
tell the driver which of these ID's in connected to which function.
Now I state again in clearer prose: Across platforms, it is impossible in
PCI to correctly determine the physical location of a PCI resource without
some external intervention.
>| Hi Experts,
>| I have a basic qry.
>| In a desk-top environment, is there a mechanism to find out which
>| PCI card/resource is plugged in to which slot ? In other words, is
>| it possible in OS level to read slot number of a particular PCI
>| card plugged in to a desk-top ? Assume the machine is running in
>| Any one experienced similar problems ?
>| Thanks in advance