#include <ntddk.h>
#include <string.h>
#include <devioctl.h>
#include "gpioctl.h"        // Get IOCTL interface definitions

/* Default base port, and # of ports */
#define BASE_PORT       0xED00
#define NUMBER_PORTS    0x1000

// NT device name
#define GPD_DEVICE_NAME L"\\Device\\PortIO0"

// File system device name.
#define DOS_DEVICE_NAME L"\\DosDevices\\PortIODev"


// driver local data structure specific to each device object
typedef struct _LOCAL_DEVICE_INFO {
    ULONG               DeviceType;     // Our private Device Type
    BOOLEAN             PortWasMapped[10];  // If TRUE, we have to unmap on unload
    PVOID               PortBase[10];       // base port address
    ULONG               PortCount[10];      // Count of I/O addresses used.
    ULONG               PortMemoryType[10]; // HalTranslateBusAddress MemoryType
    PDEVICE_OBJECT      DeviceObject;   // The Gpd device object.
    USHORT              NumberRanges;
} LOCAL_DEVICE_INFO, *PLOCAL_DEVICE_INFO;


/********************* function prototypes ***********************************/
//

NTSTATUS    DriverEntry(       IN  PDRIVER_OBJECT DriverObject,
                               IN  PUNICODE_STRING RegistryPath );

NTSTATUS    GpdCreateDevice(   IN  PWSTR szPrototypeName,
                               IN  DEVICE_TYPE DeviceType,
                               IN  PDRIVER_OBJECT DriverObject,
                               OUT PDEVICE_OBJECT *ppDevObj     );

NTSTATUS    GpdDispatch(       IN  PDEVICE_OBJECT pDO,
                               IN  PIRP pIrp                    );

NTSTATUS    GpdIoctlReadPort(  IN  PLOCAL_DEVICE_INFO pLDI,
                               IN  PIRP pIrp,
                               IN  PIO_STACK_LOCATION IrpStack,
                               IN  ULONG IoctlCode              );

NTSTATUS    GpdIoctlWritePort( IN  PLOCAL_DEVICE_INFO pLDI,
                               IN  PIRP pIrp,
                               IN  PIO_STACK_LOCATION IrpStack,
                               IN  ULONG IoctlCode              );

VOID        GpdUnload(         IN  PDRIVER_OBJECT DriverObject );