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
|
/*
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.
*/
/** \file
* \brief Host mode driver for the library USB Mass Storage Class driver.
*
* Host mode driver for the library USB Mass Storage Class driver.
*
* \note This file should not be included directly. It is automatically included as needed by the class driver
* dispatch header located in LUFA/Drivers/USB/Class/MassStorage.h.
*/
/** \ingroup Group_USBClassMS
* @defgroup Group_USBClassMassStorageHost Mass Storage Class Host Mode Driver
*
* \section Sec_Dependencies Module Source Dependencies
* The following files must be built with any user project that uses this module:
* - LUFA/Drivers/USB/Class/Host/MassStorage.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
*
* \section Module Description
* Host Mode USB Class driver framework interface, for the Mass Storage USB Class driver.
*
* @{
*/
#ifndef __MS_CLASS_HOST_H__
#define __MS_CLASS_HOST_H__
/* Includes: */
#include "../../USB.h"
#include "../Common/MassStorage.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/Class/MassStorage.h instead.
#endif
/* Public Interface - May be used in end-application: */
/* Macros: */
/** Error code for some Mass Storage Host functions, indicating a logical (and not hardware) error. */
#define MS_ERROR_LOGICAL_CMD_FAILED 0x80
/* Type Defines: */
/** \brief Mass Storage Class Host Mode Configuration and State Structure.
*
* Class state structure. An instance of this structure should be made within the user application,
* and passed to each of the Mass Storage class driver functions as the MSInterfaceInfo parameter. This
* stores each Mass Storage interface's configuration and state information.
*/
typedef struct
{
const struct
{
uint8_t DataINPipeNumber; /**< Pipe number of the Mass Storage interface's IN data pipe. */
bool DataINPipeDoubleBank; /**< Indicates if the Mass Storage interface's IN data pipe should use double banking. */
uint8_t DataOUTPipeNumber; /**< Pipe number of the Mass Storage interface's OUT data pipe. */
bool DataOUTPipeDoubleBank; /**< Indicates if the Mass Storage interface's OUT data pipe should use double banking. */
} Config; /**< Config data for the USB class interface within the device. All elements in this section
* <b>must</b> be set or the interface will fail to enumerate and operate correctly.
*/
struct
{
bool IsActive; /**< Indicates if the current interface instance is connected to an attached device, valid
* after \ref MS_Host_ConfigurePipes() is called and the Host state machine is in the
* Configured state.
*/
uint8_t InterfaceNumber; /**< Interface index of the Mass Storage interface within the attached device. */
uint16_t DataINPipeSize; /**< Size in bytes of the Mass Storage interface's IN data pipe. */
uint16_t DataOUTPipeSize; /**< Size in bytes of the Mass Storage interface's OUT data pipe. */
uint32_t TransactionTag; /**< Current transaction tag for data synchronizing of packets. */
} State; /**< State data for the USB class interface within the device. All elements in this section
* <b>may</b> be set to initial values, but may also be ignored to default to sane values when
* the interface is enumerated.
*/
} USB_ClassInfo_MS_Host_t;
/** \brief SCSI Device LUN Capacity Structure.
*
* SCSI capacity structure, to hold the total capacity of the device in both the number
* of blocks in the current LUN, and the size of each block. This structure is filled by
* the device when the \ref MS_Host_ReadDeviceCapacity() function is called.
*/
typedef struct
{
uint32_t Blocks; /**< Number of blocks in the addressed LUN of the device. */
uint32_t BlockSize; /**< Number of bytes in each block in the addressed LUN. */
} SCSI_Capacity_t;
/* Enums: */
enum MS_Host_EnumerationFailure_ErrorCodes_t
{
MS_ENUMERROR_NoError = 0, /**< Configuration Descriptor was processed successfully. */
MS_ENUMERROR_InvalidConfigDescriptor = 1, /**< The device returned an invalid Configuration Descriptor. */
MS_ENUMERROR_NoCompatibleInterfaceFound = 2, /**< A compatible Mass Storage interface was not found in the device's Configuration Descriptor. */
};
/* Function Prototypes: */
/** Host interface configuration routine, to configure a given Mass Storage host interface instance using the
* Configuration Descriptor read from an attached USB device. This function automatically updates the given Mass
* Storage Host instance's state values and configures the pipes required to communicate with the interface if it
* is found within the device. This should be called once after the stack has enumerated the attached device, while
* the host state machine is in the Addressed state.
*
* \note The pipe index numbers as given in the interface's configuration structure must not overlap with any other
* interface, or pipe bank corruption will occur. Gaps in the allocated pipe numbers or non-sequential indexes
* within a single interface is allowed, but no two interfaces of any type have have interleaved pipe indexes.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing an MS Class host configuration and state.
* \param[in] ConfigDescriptorSize Length of the attached device's Configuration Descriptor.
* \param[in] ConfigDescriptorData Pointer to a buffer containing the attached device's Configuration Descriptor.
*
* \return A value from the \ref MS_Host_EnumerationFailure_ErrorCodes_t enum.
*/
uint8_t MS_Host_ConfigurePipes(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);
/** Sends a MASS STORAGE RESET control request to the attached device, resetting the Mass Storage Interface
* and readying it for the next Mass Storage command.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state.
*
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum.
*/
uint8_t MS_Host_ResetMSInterface(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
/** Sends a GET MAX LUN control request to the attached device, retrieving the index of the highest LUN (Logical
* UNit, a logical drive) in the device. This value can then be used in the other functions of the Mass Storage
* Host mode Class driver to address a specific LUN within the device.
*
* \note Some devices do not support this request, and will STALL it when issued. To get around this,
* on unsupported devices the max LUN index will be reported as zero and no error will be returned
* if the device STALLs the request.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state.
* \param[out] MaxLUNIndex Pointer to a location where the highest LUN index value should be stored.
*
* \return A value from the \ref USB_Host_SendControlErrorCodes_t enum.
*/
uint8_t MS_Host_GetMaxLUN(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
uint8_t* const MaxLUNIndex) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
/** Retrieves the Mass Storage device's inquiry data for the specified LUN, indicating the device characteristics and
* properties.
*
* \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
* call will fail.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state.
* \param[in] LUNIndex LUN index within the device the command is being issued to.
* \param[out] InquiryData Location where the read inquiry data should be stored.
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED.
*/
uint8_t MS_Host_GetInquiryData(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
const uint8_t LUNIndex,
SCSI_Inquiry_Response_t* const InquiryData) ATTR_NON_NULL_PTR_ARG(1)
ATTR_NON_NULL_PTR_ARG(3);
/** Sends a TEST UNIT READY command to the device, to determine if it is ready to accept other SCSI commands.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state.
* \param[in] LUNIndex LUN index within the device the command is being issued to.
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED if not ready.
*/
uint8_t MS_Host_TestUnitReady(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
const uint8_t LUNIndex) ATTR_NON_NULL_PTR_ARG(1);
/** Retrieves the total capacity of the attached USB Mass Storage device, in blocks, and block size.
*
* \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
* call will fail.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state.
* \param[in] LUNIndex LUN index within the device the command is being issued to.
* \param[out] DeviceCapacity Pointer to the location where the capacity information should be stored.
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED if not ready.
*/
uint8_t MS_Host_ReadDeviceCapacity(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
const uint8_t LUNIndex,
SCSI_Capacity_t* const DeviceCapacity) ATTR_NON_NULL_PTR_ARG(1)
ATTR_NON_NULL_PTR_ARG(3);
/** Retrieves the device sense data, indicating the current device state and error codes for the previously
* issued command.
*
* \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
* call will fail.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state.
* \param[in] LUNIndex LUN index within the device the command is being issued to.
* \param[out] SenseData Pointer to the location where the sense information should be stored.
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED if not ready.
*/
uint8_t MS_Host_RequestSense(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
const uint8_t LUNIndex,
SCSI_Request_Sense_Response_t* const SenseData) ATTR_NON_NULL_PTR_ARG(1)
ATTR_NON_NULL_PTR_ARG(3);
/** Issues a PREVENT MEDIUM REMOVAL command, to logically (or, depending on the type of device, physically) lock
* the device from removal so that blocks of data on the medium can be read or altered.
*
* \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
* call will fail.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state.
* \param[in] LUNIndex LUN index within the device the command is being issued to.
* \param[in] PreventRemoval Boolean true if the device should be locked from removal, false otherwise.
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED if not ready.
*/
uint8_t MS_Host_PreventAllowMediumRemoval(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
const uint8_t LUNIndex,
const bool PreventRemoval) ATTR_NON_NULL_PTR_ARG(1);
/** Reads blocks of data from the attached Mass Storage device's medium.
*
* \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
* call will fail.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state.
* \param[in] LUNIndex LUN index within the device the command is being issued to.
* \param[in] BlockAddress Starting block address within the device to read from.
* \param[in] Blocks Total number of blocks to read.
* \param[in] BlockSize Size in bytes of each block within the device.
* \param[out] BlockBuffer Pointer to where the read data from the device should be stored.
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED if not ready.
*/
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) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(6);
/** Writes blocks of data to the attached Mass Storage device's medium.
*
* \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or the
* call will fail.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing a MS Class host configuration and state.
* \param[in] LUNIndex LUN index within the device the command is being issued to.
* \param[in] BlockAddress Starting block address within the device to write to.
* \param[in] Blocks Total number of blocks to read.
* \param[in] BlockSize Size in bytes of each block within the device.
* \param[in] BlockBuffer Pointer to where the data to write should be sourced from.
*
* \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum or \ref MS_ERROR_LOGICAL_CMD_FAILED if not ready.
*/
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) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(6);
/* Inline Functions: */
/** General management task for a given Mass Storage host class interface, required for the correct operation of
* the interface. This should be called frequently in the main program loop, before the master USB management task
* \ref USB_USBTask().
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing an Mass Storage Class host configuration and state.
*/
static inline void MS_Host_USBTask(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo);
static inline void MS_Host_USBTask(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo)
{
(void)MSInterfaceInfo;
}
/* Private Interface - For use in library only: */
#if !defined(__DOXYGEN__)
/* Macros: */
#define MASS_STORE_CLASS 0x08
#define MASS_STORE_SUBCLASS 0x06
#define MASS_STORE_PROTOCOL 0x50
#define REQ_MassStorageReset 0xFF
#define REQ_GetMaxLUN 0xFE
#define CBW_SIGNATURE 0x43425355UL
#define CSW_SIGNATURE 0x53425355UL
#define COMMAND_DIRECTION_DATA_OUT (0 << 7)
#define COMMAND_DIRECTION_DATA_IN (1 << 7)
#define COMMAND_DATA_TIMEOUT_MS 10000
/* Function Prototypes: */
#if defined(__INCLUDE_FROM_MS_CLASS_HOST_C)
static uint8_t DCOMP_MS_Host_NextMSInterface(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
static uint8_t DCOMP_MS_Host_NextMSInterfaceEndpoint(void* const CurrentDescriptor) ATTR_NON_NULL_PTR_ARG(1);
static uint8_t MS_Host_SendCommand(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
MS_CommandBlockWrapper_t* const SCSICommandBlock,
const void* const BufferPtr) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
static uint8_t MS_Host_WaitForDataReceived(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
static uint8_t MS_Host_SendReceiveData(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
MS_CommandBlockWrapper_t* const SCSICommandBlock,
void* BufferPtr) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
static uint8_t MS_Host_GetReturnedStatus(USB_ClassInfo_MS_Host_t* const MSInterfaceInfo,
MS_CommandStatusWrapper_t* const SCSICommandStatus)
ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
#endif
#endif
/* Disable C linkage for C++ Compilers: */
#if defined(__cplusplus)
}
#endif
#endif
/** @} */
|
