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1.1 root 1: /*++
2:
3: Copyright (c) 1991 Microsoft Corporation
4:
5: Module Name:
6:
7: class.h
8:
9: Abstract:
10:
11: These are the structures and defines that are used in the
12: SCSI class drivers.
13:
14: Author:
15:
16: Mike Glass (mglass)
17: Jeff Havens (jhavens)
18:
19: Revision History:
20:
21: --*/
22:
23: #ifndef _CLASS_
24:
25: #include <ntdddisk.h>
26: #include <ntddcdrm.h>
27: #include <ntddtape.h>
28: #include "ntddscsi.h"
29: #include <stdio.h>
30:
31: #if DBG
32:
33: #define DebugPrint(x) ScsiDebugPrint x
34:
35: #else
36:
37: #define DebugPrint(x)
38:
39: #endif // DBG
40:
41: #define MAXIMUM_RETRIES 4
42:
43: typedef
44: VOID
45: (*PCLASS_ERROR) (
46: IN PDEVICE_OBJECT DeviceObject,
47: IN PSCSI_REQUEST_BLOCK Srb,
48: IN OUT NTSTATUS *Status,
49: IN OUT BOOLEAN *Retry
50: );
51:
52: typedef struct _DEVICE_EXTENSION {
53:
54: //
55: // Back pointer to device object
56: //
57:
58: PDEVICE_OBJECT DeviceObject;
59:
60: //
61: // Pointer to port device object
62: //
63:
64: PDEVICE_OBJECT PortDeviceObject;
65:
66: //
67: // Length of partition in bytes
68: //
69:
70: LARGE_INTEGER PartitionLength;
71:
72: //
73: // Number of bytes before start of partition
74: //
75:
76: LARGE_INTEGER StartingOffset;
77:
78: //
79: // Pointer to the specific class error routine.
80: //
81:
82: PCLASS_ERROR ClassError;
83:
84: //
85: // SCSI port driver capabilities
86: //
87:
88: PIO_SCSI_CAPABILITIES PortCapabilities;
89:
90: //
91: // Buffer for drive parameters returned in IO device control.
92: //
93:
94: PDISK_GEOMETRY DiskGeometry;
95:
96: //
97: // Back pointer to device object of physical device
98: //
99:
100: PDEVICE_OBJECT PhysicalDevice;
101:
102: //
103: // Request Sense Buffer
104: //
105:
106: PSENSE_DATA SenseData;
107:
108: //
109: // Request timeout in seconds;
110: //
111:
112: ULONG TimeOutValue;
113:
114: //
115: // System device number
116: //
117:
118: ULONG DeviceNumber;
119:
120: //
121: // Add default Srb Flags.
122: //
123:
124: ULONG SrbFlags;
125:
126: //
127: // Total number of SCSI protocol errors on the device.
128: //
129:
130: ULONG ErrorCount;
131:
132: //
133: // Spinlock for split requests
134: //
135:
136: KSPIN_LOCK SplitRequestSpinLock;
137:
138: //
139: // Zone header and spin lock for zoned SRB requests.
140: //
141:
142: PZONE_HEADER SrbZone;
143:
144: PKSPIN_LOCK SrbZoneSpinLock;
145:
146: //
147: // Scsi port number
148: //
149:
150: UCHAR PortNumber;
151:
152: //
153: // SCSI path id
154: //
155:
156: UCHAR PathId;
157:
158: //
159: // SCSI bus target id
160: //
161:
162: UCHAR TargetId;
163:
164: //
165: // SCSI bus logical unit number
166: //
167:
168: UCHAR Lun;
169:
170: //
171: // Log2 of sector size
172: //
173:
174: UCHAR SectorShift;
175:
176: //
177: // Flag to indicate that the device has write caching enabled.
178: //
179:
180: BOOLEAN WriteCache;
181:
182: //
183: // Build SCSI 1 or SCSI 2 CDBs
184: //
185:
186: BOOLEAN UseScsi1;
187:
188: } DEVICE_EXTENSION, *PDEVICE_EXTENSION;
189:
190: //
191: // Define context structure for asynchronous completions.
192: //
193:
194: typedef struct _COMPLETION_CONTEXT {
195: PDEVICE_OBJECT DeviceObject;
196: SCSI_REQUEST_BLOCK Srb;
197: }COMPLETION_CONTEXT, *PCOMPLETION_CONTEXT;
198:
199:
200: NTSTATUS
201: ScsiClassGetCapabilities(
202: IN PDEVICE_OBJECT PortDeviceObject,
203: OUT PIO_SCSI_CAPABILITIES *PortCapabilities
204: );
205:
206: NTSTATUS
207: ScsiClassGetInquiryData(
208: IN PDEVICE_OBJECT PortDeviceObject,
209: IN PSCSI_ADAPTER_BUS_INFO *ConfigInfo
210: );
211:
212: NTSTATUS
213: ScsiClassReadDriveCapacity(
214: IN PDEVICE_OBJECT DeviceObject
215: );
216:
217: VOID
218: ScsiClassReleaseQueue(
219: IN PDEVICE_OBJECT DeviceObject
220: );
221:
222: NTSTATUS
223: ScsiClassAsynchronousCompletion(
224: PDEVICE_OBJECT DeviceObject,
225: PIRP Irp,
226: PVOID Context
227: );
228:
229: VOID
230: ScsiClassSplitRequest(
231: IN PDEVICE_OBJECT DeviceObject,
232: IN PIRP Irp,
233: IN ULONG MaximumBytes
234: );
235:
236: NTSTATUS
237: ScsiClassDeviceControl(
238: PDEVICE_OBJECT DeviceObject,
239: PIRP Irp
240: );
241:
242: NTSTATUS
243: ScsiClassIoComplete(
244: IN PDEVICE_OBJECT DeviceObject,
245: IN PIRP Irp,
246: IN PVOID Context
247: );
248:
249: NTSTATUS
250: ScsiClassIoCompleteAssociated(
251: IN PDEVICE_OBJECT DeviceObject,
252: IN PIRP Irp,
253: IN PVOID Context
254: );
255:
256: BOOLEAN
257: ScsiClassInterpretSenseInfo(
258: IN PDEVICE_OBJECT DeviceObject,
259: IN PSCSI_REQUEST_BLOCK Srb,
260: IN UCHAR MajorFunctionCode,
261: IN ULONG IoDeviceCode,
262: IN ULONG RetryCount,
263: OUT NTSTATUS *Status
264: );
265:
266: NTSTATUS
267: ScsiClassSendSrbSynchronous(
268: PDEVICE_OBJECT DeviceObject,
269: PSCSI_REQUEST_BLOCK Srb,
270: PVOID BufferAddress,
271: ULONG BufferLength,
272: BOOLEAN WriteToDevice
273: );
274:
275: NTSTATUS
276: ScsiClassSendSrbAsynchronous(
277: PDEVICE_OBJECT DeviceObject,
278: PSCSI_REQUEST_BLOCK Srb,
279: PIRP Irp,
280: PVOID BufferAddress,
281: ULONG BufferLength,
282: BOOLEAN WriteToDevice
283: );
284:
285: VOID
286: ScsiClassBuildRequest(
287: PDEVICE_OBJECT DeviceObject,
288: PIRP Irp
289: );
290:
291: ULONG
292: ScsiClassModeSense(
293: IN PDEVICE_OBJECT DeviceObject,
294: IN PCHAR ModeSenseBuffer,
295: IN ULONG Length,
296: IN UCHAR PageMode
297: );
298:
299: PVOID
300: ScsiClassFindModePage(
301: IN PCHAR ModeSenseBuffer,
302: IN ULONG Length,
303: IN UCHAR PageMode
304: );
305:
306: NTSTATUS
307: ScsiClassClaimDevice(
308: IN PDEVICE_OBJECT PortDeviceObject,
309: IN PSCSI_INQUIRY_DATA LunInfo,
310: IN BOOLEAN Release,
311: OUT PDEVICE_OBJECT *NewPortDeviceObject OPTIONAL
312: );
313:
314: NTSTATUS
315: ScsiClassInternalIoControl (
316: IN PDEVICE_OBJECT DeviceObject,
317: IN PIRP Irp
318: );
319:
320: #endif /* _CLASS_ */
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