All,
I draw a chart on the relationship of bridge/bus/devics.
I am not sure it is exact, so please correct me if it is not correct.
BTW, the pci_bus->self, pci_bus->bridge seem to point the same thing.
So this is really necessary to do this?
Bus 0(pci_bus)
+--------------------+<----+
| | |
+--------------------+ |
|
|
Bridge(pci_dev) |
+--------------------+<----|---+--------------+
|subordinate(pci_bus)|-+ | | |
+--------------------+ | | | |
| | | |
| | | |
| | | |
Bus 1(pci_bus) | | | |
+--->+-------------------+<-+ | | |
| |parent(pci_bus) |------+ | |
| +-------------------+ | |
| |self(pci_dev) |----------+ |
| |bridge(device) | |
| +-------------------+ |
| |devices(list_head) | |
| +--------+----------+ |
| | |
| ----+--+---+---- |
pci_dev | | | pci_dev |
+---------------+<--|----------+ +--------->+-----------------+ |
|bus(pci_bus) |---+ |bus(pci_bus) | |
+---------------+ +-----------------+ |
|dev.parent | |dev.parent |---+
+---------------+ +-----------------+
--
Richard Yang
Help you, Help me
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