busno.c File Reference

#include <pci.h>
#include <debug.h>

Include dependency graph for busno.c:

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Macros
#define	NDEBUG

Functions
BOOLEAN NTAPI	PciAreBusNumbersConfigured (IN PPCI_PDO_EXTENSION PdoExtension)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 13 of file busno.c.

Function Documentation

PciAreBusNumbersConfigured()

BOOLEAN NTAPI PciAreBusNumbersConfigured

(

IN PPCI_PDO_EXTENSION

PdoExtension

)

Definition at line 20 of file busno.c.

{
    UCHAR PrimaryBus, BaseBus, SecondaryBus, SubordinateBus;
 
    PAGED_CODE();
 
    /* Get all relevant bus number details */
    PrimaryBus = PdoExtension->Dependent.type1.PrimaryBus;
    BaseBus = PdoExtension->ParentFdoExtension->BaseBus;
    SecondaryBus = PdoExtension->Dependent.type1.SecondaryBus;
    SubordinateBus = PdoExtension->Dependent.type1.SubordinateBus;
 
    /* The primary bus should be the base bus of the parent */
    if ((PrimaryBus != BaseBus) || (SecondaryBus <= PrimaryBus)) return FALSE;
 
    /* The subordinate should be a higher bus number than the secondary */
    return SubordinateBus >= SecondaryBus;
}

Referenced by PciAddDevice().