1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
|
/*
LUFA Library
Copyright (C) Dean Camera, 2011.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
/** \file
* \brief Common definitions and declarations for the library USB Mass Storage Class driver.
*
* Common definitions and declarations for the library USB Mass Storage Class driver.
*
* \note This file should not be included directly. It is automatically included as needed by the USB module driver
* dispatch header located in LUFA/Drivers/USB.h.
*/
/** \ingroup Group_USBClassMS
* \defgroup Group_USBClassMSCommon Common Class Definitions
*
* \section Sec_ModDescription Module Description
* Constants, Types and Enum definitions that are common to both Device and Host modes for the USB
* Mass Storage Class.
*
* @{
*/
#ifndef _MS_CLASS_COMMON_H_
#define _MS_CLASS_COMMON_H_
/* Includes: */
#include "../../Core/StdDescriptors.h"
/* Enable C linkage for C++ Compilers: */
#if defined(__cplusplus)
extern "C" {
#endif
/* Preprocessor Checks: */
#if !defined(__INCLUDE_FROM_MS_DRIVER)
#error Do not include this file directly. Include LUFA/Drivers/USB.h instead.
#endif
/* Macros: */
/** Magic signature for a Command Block Wrapper used in the Mass Storage Bulk-Only transport protocol. */
#define MS_CBW_SIGNATURE 0x43425355UL
/** Magic signature for a Command Status Wrapper used in the Mass Storage Bulk-Only transport protocol. */
#define MS_CSW_SIGNATURE 0x53425355UL
/** Mask for a Command Block Wrapper's flags attribute to specify a command with data sent from host-to-device. */
#define MS_COMMAND_DIR_DATA_OUT (0 << 7)
/** Mask for a Command Block Wrapper's flags attribute to specify a command with data sent from device-to-host. */
#define MS_COMMAND_DIR_DATA_IN (1 << 7)
/** \name SCSI Commands*/
//@{
/** SCSI Command Code for an INQUIRY command. */
#define SCSI_CMD_INQUIRY 0x12
/** SCSI Command Code for a REQUEST SENSE command. */
#define SCSI_CMD_REQUEST_SENSE 0x03
/** SCSI Command Code for a TEST UNIT READY command. */
#define SCSI_CMD_TEST_UNIT_READY 0x00
/** SCSI Command Code for a READ CAPACITY (10) command. */
#define SCSI_CMD_READ_CAPACITY_10 0x25
/** SCSI Command Code for a SEND DIAGNOSTIC command. */
#define SCSI_CMD_SEND_DIAGNOSTIC 0x1D
/** SCSI Command Code for a PREVENT ALLOW MEDIUM REMOVAL command. */
#define SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL 0x1E
/** SCSI Command Code for a WRITE (10) command. */
#define SCSI_CMD_WRITE_10 0x2A
/** SCSI Command Code for a READ (10) command. */
#define SCSI_CMD_READ_10 0x28
/** SCSI Command Code for a WRITE (6) command. */
#define SCSI_CMD_WRITE_6 0x0A
/** SCSI Command Code for a READ (6) command. */
#define SCSI_CMD_READ_6 0x08
/** SCSI Command Code for a VERIFY (10) command. */
#define SCSI_CMD_VERIFY_10 0x2F
/** SCSI Command Code for a MODE SENSE (6) command. */
#define SCSI_CMD_MODE_SENSE_6 0x1A
/** SCSI Command Code for a MODE SENSE (10) command. */
#define SCSI_CMD_MODE_SENSE_10 0x5A
//@}
/** \name SCSI Sense Key Values */
//@{
/** SCSI Sense Code to indicate no error has occurred. */
#define SCSI_SENSE_KEY_GOOD 0x00
/** SCSI Sense Code to indicate that the device has recovered from an error. */
#define SCSI_SENSE_KEY_RECOVERED_ERROR 0x01
/** SCSI Sense Code to indicate that the device is not ready for a new command. */
#define SCSI_SENSE_KEY_NOT_READY 0x02
/** SCSI Sense Code to indicate an error whilst accessing the medium. */
#define SCSI_SENSE_KEY_MEDIUM_ERROR 0x03
/** SCSI Sense Code to indicate a hardware error has occurred. */
#define SCSI_SENSE_KEY_HARDWARE_ERROR 0x04
/** SCSI Sense Code to indicate that an illegal request has been issued. */
#define SCSI_SENSE_KEY_ILLEGAL_REQUEST 0x05
/** SCSI Sense Code to indicate that the unit requires attention from the host to indicate
* a reset event, medium removal or other condition.
*/
#define SCSI_SENSE_KEY_UNIT_ATTENTION 0x06
/** SCSI Sense Code to indicate that a write attempt on a protected block has been made. */
#define SCSI_SENSE_KEY_DATA_PROTECT 0x07
/** SCSI Sense Code to indicate an error while trying to write to a write-once medium. */
#define SCSI_SENSE_KEY_BLANK_CHECK 0x08
/** SCSI Sense Code to indicate a vendor specific error has occurred. */
#define SCSI_SENSE_KEY_VENDOR_SPECIFIC 0x09
/** SCSI Sense Code to indicate that an EXTENDED COPY command has aborted due to an error. */
#define SCSI_SENSE_KEY_COPY_ABORTED 0x0A
/** SCSI Sense Code to indicate that the device has aborted the issued command. */
#define SCSI_SENSE_KEY_ABORTED_COMMAND 0x0B
/** SCSI Sense Code to indicate an attempt to write past the end of a partition has been made. */
#define SCSI_SENSE_KEY_VOLUME_OVERFLOW 0x0D
/** SCSI Sense Code to indicate that the source data did not match the data read from the medium. */
#define SCSI_SENSE_KEY_MISCOMPARE 0x0E
//@}
/** \name SCSI Additional Sense Codes */
//@{
/** SCSI Additional Sense Code to indicate no additional sense information is available. */
#define SCSI_ASENSE_NO_ADDITIONAL_INFORMATION 0x00
/** SCSI Additional Sense Code to indicate that the logical unit (LUN) addressed is not ready. */
#define SCSI_ASENSE_LOGICAL_UNIT_NOT_READY 0x04
/** SCSI Additional Sense Code to indicate an invalid field was encountered while processing the issued command. */
#define SCSI_ASENSE_INVALID_FIELD_IN_CDB 0x24
/** SCSI Additional Sense Code to indicate that a medium that was previously indicated as not ready has now
* become ready for use.
*/
#define SCSI_ASENSE_NOT_READY_TO_READY_CHANGE 0x28
/** SCSI Additional Sense Code to indicate that an attempt to write to a protected area was made. */
#define SCSI_ASENSE_WRITE_PROTECTED 0x27
/** SCSI Additional Sense Code to indicate an error whilst formatting the device medium. */
#define SCSI_ASENSE_FORMAT_ERROR 0x31
/** SCSI Additional Sense Code to indicate an invalid command was issued. */
#define SCSI_ASENSE_INVALID_COMMAND 0x20
/** SCSI Additional Sense Code to indicate a write to a block out outside of the medium's range was issued. */
#define SCSI_ASENSE_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE 0x21
/** SCSI Additional Sense Code to indicate that no removable medium is inserted into the device. */
#define SCSI_ASENSE_MEDIUM_NOT_PRESENT 0x3A
//@}
/** \name SCSI Additional Sense Key Code Qualifiers */
//@{
/** SCSI Additional Sense Qualifier Code to indicate no additional sense qualifier information is available. */
#define SCSI_ASENSEQ_NO_QUALIFIER 0x00
/** SCSI Additional Sense Qualifier Code to indicate that a medium format command failed to complete. */
#define SCSI_ASENSEQ_FORMAT_COMMAND_FAILED 0x01
/** SCSI Additional Sense Qualifier Code to indicate that an initializing command must be issued before the issued
* command can be executed.
*/
#define SCSI_ASENSEQ_INITIALIZING_COMMAND_REQUIRED 0x02
/** SCSI Additional Sense Qualifier Code to indicate that an operation is currently in progress. */
#define SCSI_ASENSEQ_OPERATION_IN_PROGRESS 0x07
//@}
/* Enums: */
/** Enum for possible Class, Subclass and Protocol values of device and interface descriptors relating to the Mass
* Storage device class.
*/
enum MS_Descriptor_ClassSubclassProtocol_t
{
MS_CSCP_MassStorageClass = 0x08, /**< Descriptor Class value indicating that the device or interface
* belongs to the Mass Storage class.
*/
MS_CSCP_SCSITransparentSubclass = 0x06, /**< Descriptor Subclass value indicating that the device or interface
* belongs to the SCSI Transparent Command Set subclass of the Mass
* storage class.
*/
MS_CSCP_BulkOnlyTransportProtocol = 0x50, /**< Descriptor Protocol value indicating that the device or interface
* belongs to the Bulk Only Transport protocol of the Mass Storage class.
*/
};
/** Enum for the Mass Storage class specific control requests that can be issued by the USB bus host. */
enum MS_ClassRequests_t
{
MS_REQ_GetMaxLUN = 0xFE, /**< Mass Storage class-specific request to retrieve the total number of Logical
* Units (drives) in the SCSI device.
*/
MS_REQ_MassStorageReset = 0xFF, /**< Mass Storage class-specific request to reset the Mass Storage interface,
* ready for the next command.
*/
};
/** Enum for the possible command status wrapper return status codes. */
enum MS_CommandStatusCodes_t
{
MS_SCSI_COMMAND_Pass = 0, /**< Command completed with no error */
MS_SCSI_COMMAND_Fail = 1, /**< Command failed to complete - host may check the exact error via a
* SCSI REQUEST SENSE command.
*/
MS_SCSI_COMMAND_PhaseError = 2, /**< Command failed due to being invalid in the current phase. */
};
/* Type Defines: */
/** \brief Mass Storage Class Command Block Wrapper.
*
* Type define for a Command Block Wrapper, used in the Mass Storage Bulk-Only Transport protocol.
*
* \note Regardless of CPU architecture, these values should be stored as little endian.
*/
typedef struct
{
uint32_t Signature; /**< Command block signature, must be \ref MS_CBW_SIGNATURE to indicate a valid Command Block. */
uint32_t Tag; /**< Unique command ID value, to associate a command block wrapper with its command status wrapper. */
uint32_t DataTransferLength; /**< Length of the optional data portion of the issued command, in bytes. */
uint8_t Flags; /**< Command block flags, indicating command data direction. */
uint8_t LUN; /**< Logical Unit number this command is issued to. */
uint8_t SCSICommandLength; /**< Length of the issued SCSI command within the SCSI command data array. */
uint8_t SCSICommandData[16]; /**< Issued SCSI command in the Command Block. */
} ATTR_PACKED MS_CommandBlockWrapper_t;
/** \brief Mass Storage Class Command Status Wrapper.
*
* Type define for a Command Status Wrapper, used in the Mass Storage Bulk-Only Transport protocol.
*
* \note Regardless of CPU architecture, these values should be stored as little endian.
*/
typedef struct
{
uint32_t Signature; /**< Status block signature, must be \ref MS_CSW_SIGNATURE to indicate a valid Command Status. */
uint32_t Tag; /**< Unique command ID value, to associate a command block wrapper with its command status wrapper. */
uint32_t DataTransferResidue; /**< Number of bytes of data not processed in the SCSI command. */
uint8_t Status; /**< Status code of the issued command - a value from the \ref MS_CommandStatusCodes_t enum. */
} ATTR_PACKED MS_CommandStatusWrapper_t;
/** \brief Mass Storage Class SCSI Sense Structure
*
* Type define for a SCSI Sense structure. Structures of this type are filled out by the
* device via the \ref MS_Host_RequestSense() function, indicating the current sense data of the
* device (giving explicit error codes for the last issued command). For details of the
* structure contents, refer to the SCSI specifications.
*/
typedef struct
{
uint8_t ResponseCode;
uint8_t SegmentNumber;
unsigned SenseKey : 4;
unsigned Reserved : 1;
unsigned ILI : 1;
unsigned EOM : 1;
unsigned FileMark : 1;
uint8_t Information[4];
uint8_t AdditionalLength;
uint8_t CmdSpecificInformation[4];
uint8_t AdditionalSenseCode;
uint8_t AdditionalSenseQualifier;
uint8_t FieldReplaceableUnitCode;
uint8_t SenseKeySpecific[3];
} ATTR_PACKED SCSI_Request_Sense_Response_t;
/** \brief Mass Storage Class SCSI Inquiry Structure.
*
* Type define for a SCSI Inquiry structure. Structures of this type are filled out by the
* device via the \ref MS_Host_GetInquiryData() function, retrieving the attached device's
* information.
*
* For details of the structure contents, refer to the SCSI specifications.
*/
typedef struct
{
unsigned DeviceType : 5;
unsigned PeripheralQualifier : 3;
unsigned Reserved : 7;
unsigned Removable : 1;
uint8_t Version;
unsigned ResponseDataFormat : 4;
unsigned Reserved2 : 1;
unsigned NormACA : 1;
unsigned TrmTsk : 1;
unsigned AERC : 1;
uint8_t AdditionalLength;
uint8_t Reserved3[2];
unsigned SoftReset : 1;
unsigned CmdQue : 1;
unsigned Reserved4 : 1;
unsigned Linked : 1;
unsigned Sync : 1;
unsigned WideBus16Bit : 1;
unsigned WideBus32Bit : 1;
unsigned RelAddr : 1;
uint8_t VendorID[8];
uint8_t ProductID[16];
uint8_t RevisionID[4];
} ATTR_PACKED SCSI_Inquiry_Response_t;
/* Disable C linkage for C++ Compilers: */
#if defined(__cplusplus)
}
#endif
#endif
/** @} */
|
