Hi All,
There are certain fields in "struct pci_bus" in linux 2.6.14 which i am not able to understand. I have listed only the relavant fields.
struct pci_bus {
..............
..............
..............
struct pci_dev *self; /* bridge device as seen by parent */
..............
..............
unsigned char primary; /* number of primary bridge */
unsigned char secondary; /* number of secondary bridge */
unsigned char subordinate; /* max number of subordinate buses */
unsigned char secondary; /* number of secondary bridge */
unsigned char subordinate; /* max number of subordinate buses */
...............
};
there are refernce to "bridges" in comments. Which bus does this "struct pci_bus" describe, the primary bus of a bridge or the secondary bus?
Also as commented "primary" is the number of primary bridge. Please explain what is meant by "primary bridge" with respect to a bus. Similarly for "secondary" field.
Regards
Karan V
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