MassStorage.c 20.1 KB
Newer Older
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
/*
             LUFA Library
     Copyright (C) Dean Camera, 2010.
              
  dean [at] fourwalledcubicle [dot] com
      www.fourwalledcubicle.com
*/

/*
  Copyright 2010  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.
*/

#define  __INCLUDE_FROM_USB_DRIVER
#include "../../HighLevel/USBMode.h"
#if defined(USB_CAN_BE_HOST)

#define  __INCLUDE_FROM_MS_CLASS_HOST_C
#define  __INCLUDE_FROM_MS_DRIVER
#include "MassStorage.h"

39
40
uint8_t MS_Host_ConfigurePipes(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
                               uint16_t ConfigDescriptorSize,
41
							   void* ConfigDescriptorData)
42
{
43
44
45
	USB_Descriptor_Endpoint_t*  DataINEndpoint       = NULL;
	USB_Descriptor_Endpoint_t*  DataOUTEndpoint      = NULL;
	USB_Descriptor_Interface_t* MassStorageInterface = NULL;
46

47
48
	memset(&MSInterfaceInfo->State, 0x00, sizeof(MSInterfaceInfo->State));

49
	if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
50
	  return MS_ENUMERROR_InvalidConfigDescriptor;
51
52

	while (!(DataINEndpoint) || !(DataOUTEndpoint))
53
	{
54
55
		if (!(MassStorageInterface) ||
		    USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
56
		                              DCOMP_MS_Host_NextMSInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
57
		{
58
			if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
Dean Camera's avatar
Dean Camera committed
59
			                              DCOMP_MS_Host_NextMSInterface) != DESCRIPTOR_SEARCH_COMP_Found)
60
61
62
63
			{
				return MS_ENUMERROR_NoCompatibleInterfaceFound;
			}

64
65
66
67
			MassStorageInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);

			DataINEndpoint  = NULL;
			DataOUTEndpoint = NULL;
68
69

			continue;
70
71
		}
		
72
		USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
73
74

		if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
75
76
77
78
79
80
81
82
		  DataINEndpoint = EndpointData;
		else
		  DataOUTEndpoint = EndpointData;
	}
	
	for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++)
	{
		if (PipeNum == MSInterfaceInfo->Config.DataINPipeNumber)
83
		{
84
			Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_IN,
Dean Camera's avatar
Dean Camera committed
85
86
			                   DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize,
			                   MSInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
87
88
			
			MSInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize;			
89
		}
90
		else if (PipeNum == MSInterfaceInfo->Config.DataOUTPipeNumber)
91
		{
92
			Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_OUT,
Dean Camera's avatar
Dean Camera committed
93
94
			                   DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize,
			                   MSInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
95
96
97
			
			MSInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize;			
		}
98
99
	}

100
	MSInterfaceInfo->State.InterfaceNumber = MassStorageInterface->InterfaceNumber;
101
	MSInterfaceInfo->State.IsActive = true;
102

103
104
105
	return MS_ENUMERROR_NoError;
}

106
static uint8_t DCOMP_MS_Host_NextMSInterface(void* const CurrentDescriptor)
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
{
	if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
	{
		USB_Descriptor_Interface_t* CurrentInterface = DESCRIPTOR_PCAST(CurrentDescriptor,
		                                                                USB_Descriptor_Interface_t);

		if ((CurrentInterface->Class    == MASS_STORE_CLASS)    &&
		    (CurrentInterface->SubClass == MASS_STORE_SUBCLASS) &&
		    (CurrentInterface->Protocol == MASS_STORE_PROTOCOL))
		{
			return DESCRIPTOR_SEARCH_Found;
		}
	}
	
	return DESCRIPTOR_SEARCH_NotFound;
}

124
static uint8_t DCOMP_MS_Host_NextMSInterfaceEndpoint(void* const CurrentDescriptor)
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
{
	if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
	{
		USB_Descriptor_Endpoint_t* CurrentEndpoint = DESCRIPTOR_PCAST(CurrentDescriptor,
		                                                              USB_Descriptor_Endpoint_t);

		uint8_t EndpointType = (CurrentEndpoint->Attributes & EP_TYPE_MASK);

		if ((EndpointType == EP_TYPE_BULK) &&
		    (!(Pipe_IsEndpointBound(CurrentEndpoint->EndpointAddress))))
		{
			return DESCRIPTOR_SEARCH_Found;
		}
	}
	else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
	{
		return DESCRIPTOR_SEARCH_Fail;
	}

	return DESCRIPTOR_SEARCH_NotFound;
}

147
148
static uint8_t MS_Host_SendCommand(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
                                   MS_CommandBlockWrapper_t* const SCSICommandBlock,
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
                                   const void* const BufferPtr)
{
	uint8_t ErrorCode = PIPE_RWSTREAM_NoError;

	SCSICommandBlock->Signature = CBW_SIGNATURE;
	SCSICommandBlock->Tag       = ++MSInterfaceInfo->State.TransactionTag;

	if (MSInterfaceInfo->State.TransactionTag == 0xFFFFFFFF)
	  MSInterfaceInfo->State.TransactionTag = 1;

	Pipe_SelectPipe(MSInterfaceInfo->Config.DataOUTPipeNumber);
	Pipe_Unfreeze();

	if ((ErrorCode = Pipe_Write_Stream_LE(SCSICommandBlock, sizeof(MS_CommandBlockWrapper_t),
	                                      NO_STREAM_CALLBACK)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	Pipe_ClearOUT();
	Pipe_WaitUntilReady();

	Pipe_Freeze();

	if ((BufferPtr != NULL) &&
	    ((ErrorCode = MS_Host_SendReceiveData(MSInterfaceInfo, SCSICommandBlock, (void*)BufferPtr)) != PIPE_RWSTREAM_NoError))
	{
		Pipe_Freeze();
		return ErrorCode;
	}
	
	return ErrorCode;
}

static uint8_t MS_Host_WaitForDataReceived(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo)
{
183
184
	uint16_t TimeoutMSRem        = COMMAND_DATA_TIMEOUT_MS;
	uint16_t PreviousFrameNumber = USB_Host_GetFrameNumber();
185
186
187
188
189
190

	Pipe_SelectPipe(MSInterfaceInfo->Config.DataINPipeNumber);
	Pipe_Unfreeze();

	while (!(Pipe_IsINReceived()))
	{
191
192
193
		uint16_t CurrentFrameNumber = USB_Host_GetFrameNumber();
		
		if (CurrentFrameNumber != PreviousFrameNumber)
194
		{
195
			PreviousFrameNumber = CurrentFrameNumber;
196

197
			if (!(TimeoutMSRem--))
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
			  return PIPE_RWSTREAM_Timeout;
		}
	
		Pipe_Freeze();
		Pipe_SelectPipe(MSInterfaceInfo->Config.DataOUTPipeNumber);
		Pipe_Unfreeze();

		if (Pipe_IsStalled())
		{
			USB_Host_ClearPipeStall(MSInterfaceInfo->Config.DataOUTPipeNumber);

			return PIPE_RWSTREAM_PipeStalled;
		}
		
		Pipe_Freeze();
		Pipe_SelectPipe(MSInterfaceInfo->Config.DataINPipeNumber);
		Pipe_Unfreeze();

		if (Pipe_IsStalled())
		{
			USB_Host_ClearPipeStall(MSInterfaceInfo->Config.DataINPipeNumber);

			return PIPE_RWSTREAM_PipeStalled;
		}
		  
		if (USB_HostState == HOST_STATE_Unattached)
		  return PIPE_RWSTREAM_DeviceDisconnected;
	};
	
	Pipe_SelectPipe(MSInterfaceInfo->Config.DataINPipeNumber);
	Pipe_Freeze();
		
	Pipe_SelectPipe(MSInterfaceInfo->Config.DataOUTPipeNumber);
	Pipe_Freeze();

	return PIPE_RWSTREAM_NoError;
}

static uint8_t MS_Host_SendReceiveData(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
237
238
                                       MS_CommandBlockWrapper_t* const SCSICommandBlock,
                                       void* BufferPtr)
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
{
	uint8_t  ErrorCode = PIPE_RWSTREAM_NoError;
	uint16_t BytesRem  = SCSICommandBlock->DataTransferLength;

	if (SCSICommandBlock->Flags & COMMAND_DIRECTION_DATA_IN)
	{
		if ((ErrorCode = MS_Host_WaitForDataReceived(MSInterfaceInfo)) != PIPE_RWSTREAM_NoError)
		{
			Pipe_Freeze();
			return ErrorCode;
		}

		Pipe_SelectPipe(MSInterfaceInfo->Config.DataINPipeNumber);
		Pipe_Unfreeze();
		
		if ((ErrorCode = Pipe_Read_Stream_LE(BufferPtr, BytesRem, NO_STREAM_CALLBACK)) != PIPE_RWSTREAM_NoError)
		  return ErrorCode;

		Pipe_ClearIN();
	}
	else
	{
		Pipe_SelectPipe(MSInterfaceInfo->Config.DataOUTPipeNumber);
		Pipe_Unfreeze();

		if ((ErrorCode = Pipe_Write_Stream_LE(BufferPtr, BytesRem, NO_STREAM_CALLBACK)) != PIPE_RWSTREAM_NoError)
		  return ErrorCode;

		Pipe_ClearOUT();
		
		while (!(Pipe_IsOUTReady()))
		{
			if (USB_HostState == HOST_STATE_Unattached)
			  return PIPE_RWSTREAM_DeviceDisconnected;
		}
	}

	Pipe_Freeze();

	return ErrorCode;
}

static uint8_t MS_Host_GetReturnedStatus(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
                                         MS_CommandStatusWrapper_t* const SCSICommandStatus)
{
	uint8_t ErrorCode = PIPE_RWSTREAM_NoError;

	if ((ErrorCode = MS_Host_WaitForDataReceived(MSInterfaceInfo)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	Pipe_SelectPipe(MSInterfaceInfo->Config.DataINPipeNumber);
	Pipe_Unfreeze();
	
	if ((ErrorCode = Pipe_Read_Stream_LE(SCSICommandStatus, sizeof(MS_CommandStatusWrapper_t),
	                                     NO_STREAM_CALLBACK)) != PIPE_RWSTREAM_NoError)
	{
		return ErrorCode;
	}
	
	Pipe_ClearIN();
	Pipe_Freeze();
	
301
	if (SCSICommandStatus->Status != MS_SCSI_COMMAND_Pass)
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
	  ErrorCode = MS_ERROR_LOGICAL_CMD_FAILED;
	
	return ErrorCode;
}

uint8_t MS_Host_ResetMSInterface(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo)
{
	USB_ControlRequest = (USB_Request_Header_t)
		{
			.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
			.bRequest      = REQ_MassStorageReset,
			.wValue        = 0,
			.wIndex        = MSInterfaceInfo->State.InterfaceNumber,
			.wLength       = 0,
		};
	
	Pipe_SelectPipe(PIPE_CONTROLPIPE);

	return USB_Host_SendControlRequest(NULL);
}

323
324
uint8_t MS_Host_GetMaxLUN(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
                          uint8_t* const MaxLUNIndex)
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
{
	uint8_t ErrorCode = HOST_SENDCONTROL_Successful;

	USB_ControlRequest = (USB_Request_Header_t)
		{
			.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
			.bRequest      = REQ_GetMaxLUN,
			.wValue        = 0,
			.wIndex        = MSInterfaceInfo->State.InterfaceNumber,
			.wLength       = 1,
		};
		
	Pipe_SelectPipe(PIPE_CONTROLPIPE);

	if ((ErrorCode = USB_Host_SendControlRequest(MaxLUNIndex)) != HOST_SENDCONTROL_Successful)
	{
		*MaxLUNIndex = 0;
		ErrorCode = HOST_SENDCONTROL_Successful;
	}
	
	return ErrorCode;
}

348
349
uint8_t MS_Host_GetInquiryData(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
                               const uint8_t LUNIndex,
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
                               SCSI_Inquiry_Response_t* const InquiryData)
{
	if ((USB_HostState != HOST_STATE_Configured) || !(MSInterfaceInfo->State.IsActive))
	  return HOST_SENDCONTROL_DeviceDisconnected;
	  
	uint8_t ErrorCode;

	MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
		{
			.DataTransferLength = sizeof(SCSI_Inquiry_Response_t),
			.Flags              = COMMAND_DIRECTION_DATA_IN,
			.LUN                = LUNIndex,
			.SCSICommandLength  = 6,
			.SCSICommandData    =
				{
					SCSI_CMD_INQUIRY,
					0x00,                            // Reserved
					0x00,                            // Reserved
					0x00,                            // Reserved
					sizeof(SCSI_Inquiry_Response_t), // Allocation Length
					0x00                             // Unused (control)
				}
		};
	
	MS_CommandStatusWrapper_t SCSICommandStatus;

	if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, InquiryData)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;	
	
	if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	return PIPE_RWSTREAM_NoError;
}

385
386
uint8_t MS_Host_TestUnitReady(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
                              const uint8_t LUNIndex)
387
388
389
390
{
	if ((USB_HostState != HOST_STATE_Configured) || !(MSInterfaceInfo->State.IsActive))
	  return HOST_SENDCONTROL_DeviceDisconnected;

Dean Camera's avatar
Dean Camera committed
391
	uint8_t ErrorCode;
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420

	MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
		{
			.DataTransferLength = 0,
			.Flags              = COMMAND_DIRECTION_DATA_IN,
			.LUN                = LUNIndex,
			.SCSICommandLength  = 6,
			.SCSICommandData    =
				{
					SCSI_CMD_TEST_UNIT_READY,
					0x00,                   // Reserved
					0x00,                   // Reserved
					0x00,                   // Reserved
					0x00,                   // Reserved
					0x00                    // Unused (control)
				}
		};
	
	MS_CommandStatusWrapper_t SCSICommandStatus;

	if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, NULL)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;	
	
	if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	return PIPE_RWSTREAM_NoError;
}

421
422
uint8_t MS_Host_ReadDeviceCapacity(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
                                   const uint8_t LUNIndex,
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
                                   SCSI_Capacity_t* const DeviceCapacity)
{
	if ((USB_HostState != HOST_STATE_Configured) || !(MSInterfaceInfo->State.IsActive))
	  return HOST_SENDCONTROL_DeviceDisconnected;

	uint8_t ErrorCode;

	MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
		{
			.DataTransferLength = sizeof(SCSI_Capacity_t),
			.Flags              = COMMAND_DIRECTION_DATA_IN,
			.LUN                = LUNIndex,
			.SCSICommandLength  = 10,
			.SCSICommandData    =
				{
					SCSI_CMD_READ_CAPACITY_10,
					0x00,                   // Reserved
					0x00,                   // MSB of Logical block address
					0x00,
					0x00,
					0x00,                   // LSB of Logical block address
					0x00,                   // Reserved
					0x00,                   // Reserved
					0x00,                   // Partial Medium Indicator
					0x00                    // Unused (control)
				}
		};
	
	MS_CommandStatusWrapper_t SCSICommandStatus;

	if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, DeviceCapacity)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	SwapEndian_n(&DeviceCapacity->Blocks,    sizeof(DeviceCapacity->Blocks));
	SwapEndian_n(&DeviceCapacity->BlockSize, sizeof(DeviceCapacity->BlockSize));
	
	if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	return PIPE_RWSTREAM_NoError;
}

465
466
uint8_t MS_Host_RequestSense(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
                             const uint8_t LUNIndex,
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
                             SCSI_Request_Sense_Response_t* const SenseData)
{
	if ((USB_HostState != HOST_STATE_Configured) || !(MSInterfaceInfo->State.IsActive))
	  return HOST_SENDCONTROL_DeviceDisconnected;

	uint8_t ErrorCode;

	MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
		{
			.DataTransferLength = sizeof(SCSI_Request_Sense_Response_t),
			.Flags              = COMMAND_DIRECTION_DATA_IN,
			.LUN                = LUNIndex,
			.SCSICommandLength  = 6,
			.SCSICommandData    =
				{
					SCSI_CMD_REQUEST_SENSE,
					0x00,                                  // Reserved
					0x00,                                  // Reserved
					0x00,                                  // Reserved
					sizeof(SCSI_Request_Sense_Response_t), // Allocation Length
					0x00                                   // Unused (control)
				}
		};
	
	MS_CommandStatusWrapper_t SCSICommandStatus;

	if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, SenseData)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	return PIPE_RWSTREAM_NoError;
}

502
503
uint8_t MS_Host_PreventAllowMediumRemoval(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
                                          const uint8_t LUNIndex,
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
                                          const bool PreventRemoval)
{
	if ((USB_HostState != HOST_STATE_Configured) || !(MSInterfaceInfo->State.IsActive))
	  return HOST_SENDCONTROL_DeviceDisconnected;

	uint8_t ErrorCode;

	MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
		{
			.DataTransferLength = 0,
			.Flags              = COMMAND_DIRECTION_DATA_OUT,
			.LUN                = LUNIndex,
			.SCSICommandLength  = 6,
			.SCSICommandData    =
				{
					SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL,
					0x00,                   // Reserved
					0x00,                   // Reserved
					PreventRemoval,         // Prevent flag
					0x00,                   // Reserved
					0x00                    // Unused (control)
				}
		};
	
	MS_CommandStatusWrapper_t SCSICommandStatus;

	if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, NULL)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;
	
	if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	return PIPE_RWSTREAM_NoError;
}

539
540
541
542
543
544
uint8_t MS_Host_ReadDeviceBlocks(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
                                 const uint8_t LUNIndex,
                                 const uint32_t BlockAddress,
                                 const uint8_t Blocks,
                                 const uint16_t BlockSize,
                                 void* BlockBuffer)
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
{
	if ((USB_HostState != HOST_STATE_Configured) || !(MSInterfaceInfo->State.IsActive))
	  return HOST_SENDCONTROL_DeviceDisconnected;

	uint8_t ErrorCode;

	MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
		{
			.DataTransferLength = ((uint32_t)Blocks * BlockSize),
			.Flags              = COMMAND_DIRECTION_DATA_IN,
			.LUN                = LUNIndex,
			.SCSICommandLength  = 10,
			.SCSICommandData    =
				{
					SCSI_CMD_READ_10,
					0x00,                   // Unused (control bits, all off)
					(BlockAddress >> 24),   // MSB of Block Address
					(BlockAddress >> 16),
					(BlockAddress >> 8),
					(BlockAddress & 0xFF),  // LSB of Block Address
565
					0x00,                   // Reserved
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
					0x00,                   // MSB of Total Blocks to Read
					Blocks,                 // LSB of Total Blocks to Read
					0x00                    // Unused (control)
				}
		};

	MS_CommandStatusWrapper_t SCSICommandStatus;

	if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, BlockBuffer)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	return PIPE_RWSTREAM_NoError;
}

583
584
585
586
587
588
uint8_t MS_Host_WriteDeviceBlocks(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
                                  const uint8_t LUNIndex,
                                  const uint32_t BlockAddress,
                                  const uint8_t Blocks,
                                  const uint16_t BlockSize,
                                  const void* BlockBuffer)
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
{
	if ((USB_HostState != HOST_STATE_Configured) || !(MSInterfaceInfo->State.IsActive))
	  return HOST_SENDCONTROL_DeviceDisconnected;

	uint8_t ErrorCode;

	MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)
		{
			.DataTransferLength = ((uint32_t)Blocks * BlockSize),
			.Flags              = COMMAND_DIRECTION_DATA_OUT,
			.LUN                = LUNIndex,
			.SCSICommandLength  = 10,
			.SCSICommandData    =
				{
					SCSI_CMD_WRITE_10,
					0x00,                   // Unused (control bits, all off)
					(BlockAddress >> 24),   // MSB of Block Address
					(BlockAddress >> 16),
					(BlockAddress >> 8),
					(BlockAddress & 0xFF),  // LSB of Block Address
609
					0x00,                   // Reserved
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
					0x00,                   // MSB of Total Blocks to Write
					Blocks,                 // LSB of Total Blocks to Write
					0x00                    // Unused (control)
				}
		};

	MS_CommandStatusWrapper_t SCSICommandStatus;

	if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock, BlockBuffer)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;
	
	if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	return PIPE_RWSTREAM_NoError;
}

#endif