DEVICE_LOCATION

Other versions of this page are also available for the following:

• Windows Embedded CE 6.0 R3

8/28/2008

This structure assigns an IRQ to a device through the IOCTL_HAL_REQUEST_IRQ IOCTL.

Syntax

typedef struct _DEVICE_LOCATION {
  DWORD IfcType;
  DWORD BusNumber;
  DWORD LogicalLoc;
  PVOID PhysicalLoc;
  DWORD Pin;
} 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

Header	pkfuncs.h
Windows Embedded CE	Windows CE .NET 4.0 and later

See Also

Reference

INTERFACE_TYPE

Other Resources

IOCTL_HAL_REQUEST_IRQ