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qmk_firmware/LUFA/Drivers/USB/Class/Host/MassStorage.h

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/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, 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.
*/
/** \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
*
* \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
/* Public Interface - May be used in end-application: */
/* Type Defines: */
/** Class state structure. An instance of this structure should be made within the user application,
* and passed to each of the HID class driver functions as the HIDInterfaceInfo parameter. This
* stores each HID interface's configuration and state information.
*/
typedef struct
{
const struct
{
uint8_t DataINPipeNumber; /**< Pipe number of the MS interface's IN data pipe */
uint8_t DataOUTPipeNumber; /**< Pipe number of the MS interface's OUT data pipe */
} 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 Active; /**< Indicates if the current interface instance is connected to an attached device, valid
* after \ref HID_Host_ConfigurePipes() is called and the Host state machine is in the
* Configured state
*/
uint8_t InterfaceNumber; /**< Interface index of the HID interface within the attached device */
uint16_t DataINPipeSize; /**< Size in bytes of the MS interface's IN data pipe */
uint16_t DataOUTPipeSize; /**< Size in bytes of the MS interface's OUT data pipe */
uint32_t TransactionTag; /**< Current transaction tag for data synchronising 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;
/** Type define for a SCSI Sense structure. Structures of this type are filled out by the
* device via the MassStore_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 ReponseCode;
uint8_t SegmentNumber;
unsigned char SenseKey : 4;
unsigned char _RESERVED1 : 1;
unsigned char ILI : 1;
unsigned char EOM : 1;
unsigned char 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];
} SCSI_Request_Sense_Response_t;
/** Type define for a SCSI Inquiry structure. Structures of this type are filled out by the
* device via the MassStore_Inquiry() function, retrieving the attached device's information.
* For details of the structure contents, refer to the SCSI specifications.
*/
typedef struct
{
unsigned char DeviceType : 5;
unsigned char PeripheralQualifier : 3;
unsigned char _RESERVED1 : 7;
unsigned char Removable : 1;
uint8_t Version;
unsigned char ResponseDataFormat : 4;
unsigned char _RESERVED2 : 1;
unsigned char NormACA : 1;
unsigned char TrmTsk : 1;
unsigned char AERC : 1;
uint8_t AdditionalLength;
uint8_t _RESERVED3[2];
unsigned char SoftReset : 1;
unsigned char CmdQue : 1;
unsigned char _RESERVED4 : 1;
unsigned char Linked : 1;
unsigned char Sync : 1;
unsigned char WideBus16Bit : 1;
unsigned char WideBus32Bit : 1;
unsigned char RelAddr : 1;
uint8_t VendorID[8];
uint8_t ProductID[16];
uint8_t RevisionID[4];
} SCSI_Inquiry_Response_t;
/** 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 MassStore_ReadCapacity() 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_ENUMERROR_NoError = 0, /**< Configuration Descriptor was processed successfully */
MS_ENUMERROR_InvalidConfigDescriptor = 1, /**< The device returned an invalid Configuration Descriptor */
MS_ENUMERROR_NoMSInterfaceFound = 2, /**< A compatible Mass Storage interface was not found in the device's Configuration Descriptor */
MS_ENUMERROR_EndpointsNotFound = 3, /**< Compatible Mass Storage endpoints were not found in the device's interfaces */
} MSHost_EnumerationFailure_ErrorCodes_t;
/* Function Prototypes: */
/** 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 MS Class host configuration and state
*/
void MS_Host_USBTask(USB_ClassInfo_MS_Host_t* MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
/** 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.
*
* \param[in,out] MSInterfaceInfo Pointer to a structure containing an MS Class host configuration and state
* \param[in] ConfigDescriptorLength Length of the attached device's Configuration Descriptor
* \param[in] DeviceConfigDescriptor Pointer to a buffer containing the attached device's Configuration Descriptor
*/
uint8_t MS_Host_ConfigurePipes(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint16_t ConfigDescriptorLength,
uint8_t* DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1, 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* MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
uint8_t MS_Host_GetMaxLUN(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8_t* MaxLUNIndex) ATTR_NON_NULL_PTR_ARG(1, 2);
uint8_t MS_Host_GetInquiryData(USB_ClassInfo_MS_Host_t* MSInterfaceInfo,
SCSI_Inquiry_Response_t* InquiryData) ATTR_NON_NULL_PTR_ARG(1, 2);
uint8_t MS_Host_TestUnitReady(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8_t LUNIndex,
bool* DeviceReady) ATTR_NON_NULL_PTR_ARG(1, 3);
uint8_t MS_Host_ReadDeviceCapacity(USB_ClassInfo_MS_Host_t* MSInterfaceInfo, uint8_t LUNIndex,
SCSI_Capacity_t* DeviceCapacity) ATTR_NON_NULL_PTR_ARG(1, 3);
/* 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 2000
#define MS_FOUND_DATAPIPE_IN (1 << 0)
#define MS_FOUND_DATAPIPE_OUT (1 << 1)
/* Function Prototypes: */
#if defined(INCLUDE_FROM_MS_CLASS_HOST_C)
static uint8_t DComp_NextMassStorageInterface(void* CurrentDescriptor);
static uint8_t DComp_NextInterfaceBulkDataEndpoint(void* CurrentDescriptor);
static uint8_t MassStore_SendCommand(USB_ClassInfo_MS_Host_t* MSInterfaceInfo,
MS_CommandBlockWrapper_t* SCSICommandBlock);
static uint8_t MassStore_WaitForDataReceived(USB_ClassInfo_MS_Host_t* MSInterfaceInfo);
static uint8_t MassStore_SendReceiveData(USB_ClassInfo_MS_Host_t* MSInterfaceInfo,
MS_CommandBlockWrapper_t* SCSICommandBlock, void* BufferPtr);
static uint8_t MassStore_GetReturnedStatus(USB_ClassInfo_MS_Host_t* MSInterfaceInfo,
MS_CommandStatusWrapper_t* SCSICommandStatus);
#endif
#endif
/* Disable C linkage for C++ Compilers: */
#if defined(__cplusplus)
}
#endif
#endif
/** @} */