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215 lines
5.0 KiB
215 lines
5.0 KiB
/*++
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Copyright (c) 1993 Microsoft Corporation
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Module Name :
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parport.h
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Abstract:
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Type definitions and data for the parallel port driver.
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Author:
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Revision History:
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--*/
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#if DBG
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#define PARCONFIG ((ULONG)0x00000001)
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#define PARUNLOAD ((ULONG)0x00000002)
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#define PARINITDEV ((ULONG)0x00000004)
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#define PARIRPPATH ((ULONG)0x00000008)
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#define PARSTARTER ((ULONG)0x00000010)
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#define PARPUSHER ((ULONG)0x00000020)
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#define PARERRORS ((ULONG)0x00000040)
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#define PARTHREAD ((ULONG)0x00000080)
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extern ULONG PptDebugLevel;
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#define ParDump(LEVEL,STRING) \
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do { \
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ULONG _level = (LEVEL); \
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if ((_level == 0)||(PptDebugLevel & _level)) { \
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DbgPrint STRING; \
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} \
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} while (0)
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#else
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#define ParDump(LEVEL,STRING) do {NOTHING;} while (0)
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#endif
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typedef struct _CONFIG_DATA {
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//
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// This list entry is used to link all of the "valid"
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// configuration entries together.
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//
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LIST_ENTRY ConfigList;
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//
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// The suffix to be used in the nt device name space for this
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// port.
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//
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UNICODE_STRING NtNameForPort;
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//
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// The base address of the registry set for this device.
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//
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PHYSICAL_ADDRESS Controller;
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//
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// The number of contiguous bytes take up by the register
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// set for the device.
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//
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ULONG SpanOfController;
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//
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// The bus number (with respect to the bus type) of the bus
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// that this device occupies.
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//
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ULONG BusNumber;
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//
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// Denotes whether this devices physical addresses live in io space
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// or memory space.
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//
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ULONG AddressSpace;
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//
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// The kind of bus that this device lives on (e.g. Isa, Eisa, MCA, etc)
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//
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INTERFACE_TYPE InterfaceType;
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//
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// Registry information on the parallel port interrupt.
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//
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ULONG InterruptLevel;
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ULONG InterruptVector;
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KAFFINITY InterruptAffinity;
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KINTERRUPT_MODE InterruptMode;
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//
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// Denotes whether the device should be disabled after it has been
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// initialized.
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//
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ULONG DisablePort;
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} CONFIG_DATA, *PCONFIG_DATA;
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typedef struct _ISR_LIST_ENTRY {
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LIST_ENTRY ListEntry;
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PKSERVICE_ROUTINE ServiceRoutine;
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PVOID ServiceContext;
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PPARALLEL_DEFERRED_ROUTINE DeferredPortCheckRoutine;
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PVOID CheckContext;
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} ISR_LIST_ENTRY, *PISR_LIST_ENTRY;
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typedef struct _DEVICE_EXTENSION {
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//
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// Points to the device object that contains
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// this device extension.
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//
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PDEVICE_OBJECT DeviceObject;
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//
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// Queue of irps waiting to be processed. Access with
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// cancel spin lock.
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//
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LIST_ENTRY WorkQueue;
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//
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// The number of irps in the queue where -1 represents
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// a free port, 0 represents an allocated port with
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// zero waiters, 1 represents an allocated port with
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// 1 waiter, etc...
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//
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// This variable must be accessed with the cancel spin
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// lock or at interrupt level whenever interrupts are
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// being used.
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//
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LONG WorkQueueCount;
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//
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// This structure holds the port address and range for the
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// parallel port.
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//
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PARALLEL_PORT_INFORMATION PortInfo;
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//
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// Information about the interrupt so that we
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// can connect to it when we have a client that
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// uses the interrupt.
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//
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ULONG AddressSpace;
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INTERFACE_TYPE InterfaceType;
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ULONG BusNumber;
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ULONG InterruptLevel;
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ULONG InterruptVector;
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KAFFINITY InterruptAffinity;
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KINTERRUPT_MODE InterruptMode;
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//
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// This list contains all of the interrupt service
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// routines registered by class drivers. All access
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// to this list should be done at interrupt level.
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//
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// This list also contains all of the deferred port check
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// routines. These routines are called whenever
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// the port is freed if there are no IRPs queued for
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// the port. Access this list only at interrupt level.
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//
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LIST_ENTRY IsrList;
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//
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// The parallel port interrupt object.
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//
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PKINTERRUPT InterruptObject;
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//
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// Keep a reference count for the interrupt object.
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// This count should be referenced with the cancel
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// spin lock.
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//
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ULONG InterruptRefCount;
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//
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// DPC for freeing the port from the interrupt routine.
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//
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KDPC FreePortDpc;
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//
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// Set at initialization to indicate that on the current
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// architecture we need to unmap the base register address
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// when we unload the driver.
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//
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BOOLEAN UnMapRegisters;
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} DEVICE_EXTENSION, *PDEVICE_EXTENSION;
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BOOLEAN
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PptIsNecR98Machine(void);
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NTSTATUS
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PptDispatchCreateClose(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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PptDispatchDeviceControl(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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PptDispatchCleanup(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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VOID
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PptUnload(
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IN PDRIVER_OBJECT DriverObject
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);
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