This structure assigns an IRQ to a device through the IOCTL_HAL_REQUEST_IRQ IOCTL.
typedef struct _DEVICE_LOCATION {DWORD IfcType;
DWORD BusNumber;
DWORDLogicalLoc;
PVOIDPhysicalLoc;
DWORDPin;
} DEVICE_LOCATION, *PDEVICE_LOCATION;
Members
IfcType
Element of the INTERFACE_TYPE enumeration. Typically, set to PCIBus.BusNumber
Bus number. Typically, the PCI bus number where the device is located.LogicalLoc
Logical ___location of device; the PCI slot and function numbers.PhysicalLoc
Reserved for future use.Pin
PCI bus interrupt pin number.The following table shows the possible values.
Interrupt pin number Value INTA 1 INTB 2 INTC 3 INTD 4
Remarks
This structure describes the ___location of a hardware device in terms of its interface, bus number, and logical ___location. It is typically used for describing PCI devices. The Pin member describes which pin (1 through 4) of a PCI device is being used for the interrupt.
The LogicalLoc member identifies the ___location of the device. The following table shows how the bits of the DWORD for the PCI bus are defined.
| Bits | Description |
|---|---|
| 31 through 24 | 0 |
| 23 through 16 | Bus number |
| 15 through 8 | Device number |
| 7 through 0 | Function number |
Requirements
OS Versions: Windows CE .NET 4.0 and later.
Header: Pkfuncs.h.
See Also
INTERFACE_TYPE | IOCTL_HAL_REQUEST_IRQ
Send Feedback on this topic to the authors