diff options
Diffstat (limited to 'Demos/Host/LowLevel/MassStorageHost')
| -rw-r--r-- | Demos/Host/LowLevel/MassStorageHost/Config/LUFAConfig.h | 93 | ||||
| -rw-r--r-- | Demos/Host/LowLevel/MassStorageHost/ConfigDescriptor.c | 173 | ||||
| -rw-r--r-- | Demos/Host/LowLevel/MassStorageHost/ConfigDescriptor.h | 78 | ||||
| -rw-r--r-- | Demos/Host/LowLevel/MassStorageHost/Lib/MassStoreCommands.c | 635 | ||||
| -rw-r--r-- | Demos/Host/LowLevel/MassStorageHost/Lib/MassStoreCommands.h | 86 | ||||
| -rw-r--r-- | Demos/Host/LowLevel/MassStorageHost/MassStorageHost.c | 373 | ||||
| -rw-r--r-- | Demos/Host/LowLevel/MassStorageHost/MassStorageHost.h | 91 | ||||
| -rw-r--r-- | Demos/Host/LowLevel/MassStorageHost/MassStorageHost.txt | 68 | ||||
| -rw-r--r-- | Demos/Host/LowLevel/MassStorageHost/asf.xml | 53 | ||||
| -rw-r--r-- | Demos/Host/LowLevel/MassStorageHost/doxyfile | 2395 | ||||
| -rw-r--r-- | Demos/Host/LowLevel/MassStorageHost/makefile | 43 |
11 files changed, 4088 insertions, 0 deletions
diff --git a/Demos/Host/LowLevel/MassStorageHost/Config/LUFAConfig.h b/Demos/Host/LowLevel/MassStorageHost/Config/LUFAConfig.h new file mode 100644 index 0000000000..e2b5166f25 --- /dev/null +++ b/Demos/Host/LowLevel/MassStorageHost/Config/LUFAConfig.h @@ -0,0 +1,93 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 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 disclaims 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 LUFA Library Configuration Header File + * + * This header file is used to configure LUFA's compile time options, + * as an alternative to the compile time constants supplied through + * a makefile. + * + * For information on what each token does, refer to the LUFA + * manual section "Summary of Compile Tokens". + */ + +#ifndef _LUFA_CONFIG_H_ +#define _LUFA_CONFIG_H_ + + #if (ARCH == ARCH_AVR8) + + /* Non-USB Related Configuration Tokens: */ +// #define DISABLE_TERMINAL_CODES + + /* USB Class Driver Related Tokens: */ +// #define HID_HOST_BOOT_PROTOCOL_ONLY +// #define HID_STATETABLE_STACK_DEPTH {Insert Value Here} +// #define HID_USAGE_STACK_DEPTH {Insert Value Here} +// #define HID_MAX_COLLECTIONS {Insert Value Here} +// #define HID_MAX_REPORTITEMS {Insert Value Here} +// #define HID_MAX_REPORT_IDS {Insert Value Here} +// #define NO_CLASS_DRIVER_AUTOFLUSH + + /* General USB Driver Related Tokens: */ +// #define ORDERED_EP_CONFIG + #define USE_STATIC_OPTIONS (USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL) +// #define USB_DEVICE_ONLY + #define USB_HOST_ONLY + #define USB_STREAM_TIMEOUT_MS 5000 +// #define NO_LIMITED_CONTROLLER_CONNECT +// #define NO_SOF_EVENTS + + /* USB Device Mode Driver Related Tokens: */ +// #define USE_RAM_DESCRIPTORS +// #define USE_FLASH_DESCRIPTORS +// #define USE_EEPROM_DESCRIPTORS +// #define NO_INTERNAL_SERIAL +// #define FIXED_CONTROL_ENDPOINT_SIZE {Insert Value Here} +// #define DEVICE_STATE_AS_GPIOR {Insert Value Here} +// #define FIXED_NUM_CONFIGURATIONS {Insert Value Here} +// #define CONTROL_ONLY_DEVICE +// #define INTERRUPT_CONTROL_ENDPOINT +// #define NO_DEVICE_REMOTE_WAKEUP +// #define NO_DEVICE_SELF_POWER + + /* USB Host Mode Driver Related Tokens: */ +// #define HOST_STATE_AS_GPIOR {Insert Value Here} +// #define USB_HOST_TIMEOUT_MS {Insert Value Here} +// #define HOST_DEVICE_SETTLE_DELAY_MS {Insert Value Here} +// #define NO_AUTO_VBUS_MANAGEMENT +// #define INVERTED_VBUS_ENABLE_LINE + + #else + + #error Unsupported architecture for this LUFA configuration file. + + #endif +#endif diff --git a/Demos/Host/LowLevel/MassStorageHost/ConfigDescriptor.c b/Demos/Host/LowLevel/MassStorageHost/ConfigDescriptor.c new file mode 100644 index 0000000000..b65912d51a --- /dev/null +++ b/Demos/Host/LowLevel/MassStorageHost/ConfigDescriptor.c @@ -0,0 +1,173 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 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 disclaims 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 + * + * USB Device Configuration Descriptor processing routines, to determine the correct pipe configurations + * needed to communication with an attached USB device. Descriptors are special computer-readable structures + * which the host requests upon device enumeration, to determine the device's capabilities and functions. + */ + +#include "ConfigDescriptor.h" + +/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This + * routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate + * with compatible devices. + * + * This routine searches for a MSD interface descriptor containing bulk IN and OUT data endpoints. + * + * \return An error code from the \ref MassStorageHost_GetConfigDescriptorDataCodes_t enum. + */ +uint8_t ProcessConfigurationDescriptor(void) +{ + uint8_t ConfigDescriptorData[512]; + void* CurrConfigLocation = ConfigDescriptorData; + uint16_t CurrConfigBytesRem; + + USB_Descriptor_Interface_t* MSInterface = NULL; + USB_Descriptor_Endpoint_t* DataINEndpoint = NULL; + USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL; + + /* Retrieve the entire configuration descriptor into the allocated buffer */ + switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData))) + { + case HOST_GETCONFIG_Successful: + break; + case HOST_GETCONFIG_InvalidData: + return InvalidConfigDataReturned; + case HOST_GETCONFIG_BuffOverflow: + return DescriptorTooLarge; + default: + return ControlError; + } + + while (!(DataINEndpoint) || !(DataOUTEndpoint)) + { + /* See if we've found a likely compatible interface, and if there is an endpoint within that interface */ + if (!(MSInterface) || + USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation, + DComp_NextMSInterfaceBulkDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found) + { + /* Get the next Mass Storage interface from the configuration descriptor */ + if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation, + DComp_NextMSInterface) != DESCRIPTOR_SEARCH_COMP_Found) + { + /* Descriptor not found, error out */ + return NoCompatibleInterfaceFound; + } + + /* Save the interface in case we need to refer back to it later */ + MSInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t); + + /* Clear any found endpoints */ + DataINEndpoint = NULL; + DataOUTEndpoint = NULL; + + /* Skip the remainder of the loop as we have not found an endpoint yet */ + continue; + } + + /* Retrieve the endpoint address from the endpoint descriptor */ + USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t); + + /* If the endpoint is a IN type endpoint */ + if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN) + DataINEndpoint = EndpointData; + else + DataOUTEndpoint = EndpointData; + } + + /* Configure the Mass Storage data IN pipe */ + Pipe_ConfigurePipe(MASS_STORE_DATA_IN_PIPE, EP_TYPE_BULK, DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, 1); + + /* Configure the Mass Storage data OUT pipe */ + Pipe_ConfigurePipe(MASS_STORE_DATA_OUT_PIPE, EP_TYPE_BULK, DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, 1); + + /* Valid data found, return success */ + return SuccessfulConfigRead; +} + +/** Descriptor comparator function. This comparator function is can be called while processing an attached USB device's + * configuration descriptor, to search for a specific sub descriptor. It can also be used to abort the configuration + * descriptor processing if an incompatible descriptor configuration is found. + * + * This comparator searches for the next Interface descriptor of the correct Mass Storage Class, Subclass and Protocol values. + * + * \return A value from the DSEARCH_Return_ErrorCodes_t enum + */ +uint8_t DComp_NextMSInterface(void* CurrentDescriptor) +{ + USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t); + + if (Header->Type == DTYPE_Interface) + { + USB_Descriptor_Interface_t* Interface = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Interface_t); + + /* Check the descriptor class and protocol, break out if correct class/protocol interface found */ + if ((Interface->Class == MASS_STORE_CLASS) && + (Interface->SubClass == MASS_STORE_SUBCLASS) && + (Interface->Protocol == MASS_STORE_PROTOCOL)) + { + return DESCRIPTOR_SEARCH_Found; + } + } + + return DESCRIPTOR_SEARCH_NotFound; +} + +/** Descriptor comparator function. This comparator function is can be called while processing an attached USB device's + * configuration descriptor, to search for a specific sub descriptor. It can also be used to abort the configuration + * descriptor processing if an incompatible descriptor configuration is found. + * + * This comparator searches for the next Bulk Endpoint descriptor of the correct MSD interface, aborting the search if + * another interface descriptor is found before the next endpoint. + * + * \return A value from the DSEARCH_Return_ErrorCodes_t enum + */ +uint8_t DComp_NextMSInterfaceBulkDataEndpoint(void* CurrentDescriptor) +{ + USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t); + + if (Header->Type == DTYPE_Endpoint) + { + USB_Descriptor_Endpoint_t* Endpoint = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Endpoint_t); + + /* Check the endpoint type, break out if correct BULK type endpoint found */ + if ((Endpoint->Attributes & EP_TYPE_MASK) == EP_TYPE_BULK) + return DESCRIPTOR_SEARCH_Found; + } + else if (Header->Type == DTYPE_Interface) + { + return DESCRIPTOR_SEARCH_Fail; + } + + return DESCRIPTOR_SEARCH_NotFound; +} + diff --git a/Demos/Host/LowLevel/MassStorageHost/ConfigDescriptor.h b/Demos/Host/LowLevel/MassStorageHost/ConfigDescriptor.h new file mode 100644 index 0000000000..eaf4d28de6 --- /dev/null +++ b/Demos/Host/LowLevel/MassStorageHost/ConfigDescriptor.h @@ -0,0 +1,78 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 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 disclaims 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 + * + * Header file for ConfigDescriptor.c. + */ + +#ifndef _CONFIGDESCRIPTOR_H_ +#define _CONFIGDESCRIPTOR_H_ + + /* Includes: */ + #include <LUFA/Drivers/USB/USB.h> + + #include "MassStorageHost.h" + + /* Macros: */ + /** Interface Class value for the Mass Storage Device class. */ + #define MASS_STORE_CLASS 0x08 + + /** Interface Class value for the Mass Storage Device subclass. */ + #define MASS_STORE_SUBCLASS 0x06 + + /** Interface Protocol value for the Bulk Only transport protocol. */ + #define MASS_STORE_PROTOCOL 0x50 + + /** Pipe address of the Mass Storage data IN pipe. */ + #define MASS_STORE_DATA_IN_PIPE (PIPE_DIR_IN | 1) + + /** Pipe address of the Mass Storage data OUT pipe. */ + #define MASS_STORE_DATA_OUT_PIPE (PIPE_DIR_OUT | 2) + + /* Enums: */ + /** Enum for the possible return codes of the \ref ProcessConfigurationDescriptor() function. */ + enum MassStorageHost_GetConfigDescriptorDataCodes_t + { + SuccessfulConfigRead = 0, /**< Configuration Descriptor was processed successfully */ + ControlError = 1, /**< A control request to the device failed to complete successfully */ + DescriptorTooLarge = 2, /**< The device's Configuration Descriptor is too large to process */ + InvalidConfigDataReturned = 3, /**< The device returned an invalid Configuration Descriptor */ + NoCompatibleInterfaceFound = 4, /**< A compatible interface with the required endpoints was not found */ + }; + + /* Function Prototypes: */ + uint8_t ProcessConfigurationDescriptor(void); + + uint8_t DComp_NextMSInterface(void* CurrentDescriptor); + uint8_t DComp_NextMSInterfaceBulkDataEndpoint(void* CurrentDescriptor); + +#endif + diff --git a/Demos/Host/LowLevel/MassStorageHost/Lib/MassStoreCommands.c b/Demos/Host/LowLevel/MassStorageHost/Lib/MassStoreCommands.c new file mode 100644 index 0000000000..5f0dd6f1a4 --- /dev/null +++ b/Demos/Host/LowLevel/MassStorageHost/Lib/MassStoreCommands.c @@ -0,0 +1,635 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 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 disclaims 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 + * + * Mass Storage Device commands, to issue MSD commands to the device for + * reading device status, capacity, and other characteristics. This file + * also contains block read and write functions, so that device blocks + * can be read and written. In general, these functions would be chained + * to a FAT library to give file-level access to an attached device's contents. + * + * \note Many Mass Storage devices on the market are non-compliant to the + * specifications and thus can prove difficult to interface with. It + * may be necessary to retry the functions in the module several times + * after they have returned and error to successfully send the command + * to the device. Some devices may also need to have the stream function + * timeout period extended beyond 100ms (some badly designed devices exceeding + * 1.5 seconds occasionally) by defining USB_STREAM_TIMEOUT_MS to a + * larger value in the project makefile and passing it to the compiler + * via the -D switch. + */ + +#define INCLUDE_FROM_MASSSTORE_COMMANDS_C +#include "MassStoreCommands.h" + +/** Current Tag value used in issued CBWs to the device. This is automatically incremented + * each time a command is sent, and is not externally accessible. + */ +static uint32_t MassStore_Tag = 1; + + +/** Routine to send the current CBW to the device, and increment the Tag value as needed. + * + * \param[in] SCSICommandBlock Pointer to a SCSI command block structure to send to the attached device + * \param[in,out] BufferPtr Pointer to a buffer for the data to send or receive to/from the device, or NULL if no data + * + * \return A value from the Pipe_Stream_RW_ErrorCodes_t enum + */ +static uint8_t MassStore_SendCommand(MS_CommandBlockWrapper_t* const SCSICommandBlock, + void* BufferPtr) +{ + uint8_t ErrorCode = PIPE_RWSTREAM_NoError; + + /* Wrap Tag value when invalid - MS class defines tag values of 0 and 0xFFFFFFFF to be invalid */ + if (++MassStore_Tag == 0xFFFFFFFF) + MassStore_Tag = 1; + + /* Each transmission should have a unique tag value, increment before use */ + SCSICommandBlock->Tag = MassStore_Tag; + + /* Select the OUT data pipe for CBW transmission */ + Pipe_SelectPipe(MASS_STORE_DATA_OUT_PIPE); + Pipe_Unfreeze(); + + /* Write the CBW command to the OUT pipe */ + if ((ErrorCode = Pipe_Write_Stream_LE(SCSICommandBlock, sizeof(MS_CommandBlockWrapper_t), NULL)) != + PIPE_RWSTREAM_NoError) + { + Pipe_Freeze(); + return ErrorCode; + } + + /* Send the data in the OUT pipe to the attached device */ + Pipe_ClearOUT(); + + /* Wait until command has been sent */ + Pipe_WaitUntilReady(); + + /* Freeze pipe after use */ + Pipe_Freeze(); + + if (BufferPtr != NULL) + { + /* Transfer the requested data (if any) to or from the device */ + ErrorCode = MassStore_SendReceiveData(SCSICommandBlock, (void*)BufferPtr); + + /* Only fail completely if the transfer fails without a STALL, as a logical STALL can be recovered from */ + if ((ErrorCode != PIPE_RWSTREAM_NoError) && (ErrorCode != PIPE_RWSTREAM_PipeStalled)) + { + Pipe_Freeze(); + return ErrorCode; + } + } + + /* Retrieve the returned SCSI status from the device */ + MS_CommandStatusWrapper_t SCSIStatusBlock; + return MassStore_GetReturnedStatus(&SCSIStatusBlock); +} + +/** Waits until the attached device is ready to accept data following a CBW, checking + * to ensure that the device has not stalled the transaction. + * + * \return A value from the Pipe_Stream_RW_ErrorCodes_t enum + */ +static uint8_t MassStore_WaitForDataReceived(void) +{ + uint16_t TimeoutMSRem = COMMAND_DATA_TIMEOUT_MS; + uint16_t PreviousFrameNumber = USB_Host_GetFrameNumber(); + + /* Select the IN data pipe for data reception */ + Pipe_SelectPipe(MASS_STORE_DATA_IN_PIPE); + Pipe_Unfreeze(); + + /* Wait until data received in the IN pipe */ + while (!(Pipe_IsINReceived())) + { + uint16_t CurrentFrameNumber = USB_Host_GetFrameNumber(); + + /* Check to see if a new frame has been issued (1ms elapsed) */ + if (CurrentFrameNumber != PreviousFrameNumber) + { + /* Save the new frame number and decrement the timeout period */ + PreviousFrameNumber = CurrentFrameNumber; + TimeoutMSRem--; + + /* Check to see if the timeout period for the command has elapsed */ + if (!(TimeoutMSRem)) + return PIPE_RWSTREAM_Timeout; + } + + Pipe_Freeze(); + Pipe_SelectPipe(MASS_STORE_DATA_OUT_PIPE); + Pipe_Unfreeze(); + + /* Check if pipe stalled (command failed by device) */ + if (Pipe_IsStalled()) + { + /* Clear the stall condition on the OUT pipe */ + USB_Host_ClearEndpointStall(Pipe_GetBoundEndpointAddress()); + + return PIPE_RWSTREAM_PipeStalled; + } + + Pipe_Freeze(); + Pipe_SelectPipe(MASS_STORE_DATA_IN_PIPE); + Pipe_Unfreeze(); + + /* Check if pipe stalled (command failed by device) */ + if (Pipe_IsStalled()) + { + /* Clear the stall condition on the IN pipe */ + USB_Host_ClearEndpointStall(Pipe_GetBoundEndpointAddress()); + + return PIPE_RWSTREAM_PipeStalled; + } + + /* Check to see if the device was disconnected, if so exit function */ + if (USB_HostState == HOST_STATE_Unattached) + return PIPE_RWSTREAM_DeviceDisconnected; + }; + + Pipe_SelectPipe(MASS_STORE_DATA_IN_PIPE); + Pipe_Freeze(); + + Pipe_SelectPipe(MASS_STORE_DATA_OUT_PIPE); + Pipe_Freeze(); + + return PIPE_RWSTREAM_NoError; +} + +/** Sends or receives the transaction's data stage to or from the attached device, reading or + * writing to the nominated buffer. + * + * \param[in] SCSICommandBlock Pointer to a SCSI command block structure being sent to the attached device + * \param[in,out] BufferPtr Pointer to the data buffer to read from or write to + * + * \return A value from the Pipe_Stream_RW_ErrorCodes_t enum + */ +static uint8_t MassStore_SendReceiveData(MS_CommandBlockWrapper_t* const SCSICommandBlock, + void* BufferPtr) +{ + uint8_t ErrorCode = PIPE_RWSTREAM_NoError; + uint16_t BytesRem = SCSICommandBlock->DataTransferLength; + + /* Check the direction of the SCSI command data stage */ + if (SCSICommandBlock->Flags & MS_COMMAND_DIR_DATA_IN) + { + /* Wait until the device has replied with some data */ + if ((ErrorCode = MassStore_WaitForDataReceived()) != PIPE_RWSTREAM_NoError) + return ErrorCode; + + /* Select the IN data pipe for data reception */ + Pipe_SelectPipe(MASS_STORE_DATA_IN_PIPE); + Pipe_Unfreeze(); + + /* Read in the block data from the pipe */ + if ((ErrorCode = Pipe_Read_Stream_LE(BufferPtr, BytesRem, NULL)) != PIPE_RWSTREAM_NoError) + return ErrorCode; + + /* Acknowledge the packet */ + Pipe_ClearIN(); + } + else + { + /* Select the OUT data pipe for data transmission */ + Pipe_SelectPipe(MASS_STORE_DATA_OUT_PIPE); + Pipe_Unfreeze(); + + /* Write the block data to the pipe */ + if ((ErrorCode = Pipe_Write_Stream_LE(BufferPtr, BytesRem, NULL)) != PIPE_RWSTREAM_NoError) + return ErrorCode; + + /* Acknowledge the packet */ + Pipe_ClearOUT(); + + while (!(Pipe_IsOUTReady())) + { + if (USB_HostState == HOST_STATE_Unattached) + return PIPE_RWSTREAM_DeviceDisconnected; + } + } + + /* Freeze used pipe after use */ + Pipe_Freeze(); + + return PIPE_RWSTREAM_NoError; +} + +/** Routine to receive the current CSW from the device. + * + * \param[out] SCSICommandStatus Pointer to a destination where the returned status data should be stored + * + * \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails + */ +static uint8_t MassStore_GetReturnedStatus(MS_CommandStatusWrapper_t* const SCSICommandStatus) +{ + uint8_t ErrorCode = PIPE_RWSTREAM_NoError; + + /* If an error in the command occurred, abort */ + if ((ErrorCode = MassStore_WaitForDataReceived()) != PIPE_RWSTREAM_NoError) + return ErrorCode; + + /* Select the IN data pipe for data reception */ + Pipe_SelectPipe(MASS_STORE_DATA_IN_PIPE); + Pipe_Unfreeze(); + + /* Load in the CSW from the attached device */ + if ((ErrorCode = Pipe_Read_Stream_LE(SCSICommandStatus, sizeof(MS_CommandStatusWrapper_t), NULL)) != + PIPE_RWSTREAM_NoError) + { + return ErrorCode; + } + + /* Clear the data ready for next reception */ + Pipe_ClearIN(); + + /* Freeze the IN pipe after use */ + Pipe_Freeze(); + + /* Check to see if command failed */ + if (SCSICommandStatus->Status != MS_SCSI_COMMAND_Pass) + ErrorCode = MASS_STORE_SCSI_COMMAND_FAILED; + + return ErrorCode; +} + +/** Issues a Mass Storage class specific request to reset the attached device's Mass Storage interface, + * readying the device for the next CBW. The Data endpoints are cleared of any STALL condition once this + * command completes successfully. + * + * \return A value from the USB_Host_SendControlErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails + */ +uint8_t MassStore_MassStorageReset(void) +{ + uint8_t ErrorCode; + + USB_ControlRequest = (USB_Request_Header_t) + { + .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE), + .bRequest = MS_REQ_MassStorageReset, + .wValue = 0, + .wIndex = 0, + .wLength = 0, + }; + + /* Select the control pipe for the request transfer */ + Pipe_SelectPipe(PIPE_CONTROLPIPE); + + if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful) + return ErrorCode; + + /* Select first data pipe to clear STALL condition if one exists */ + Pipe_SelectPipe(MASS_STORE_DATA_IN_PIPE); + + if ((ErrorCode = USB_Host_ClearEndpointStall(Pipe_GetBoundEndpointAddress())) != HOST_SENDCONTROL_Successful) + return ErrorCode; + + /* Select second data pipe to clear STALL condition if one exists */ + Pipe_SelectPipe(MASS_STORE_DATA_OUT_PIPE); + + if ((ErrorCode = USB_Host_ClearEndpointStall(Pipe_GetBoundEndpointAddress())) != HOST_SENDCONTROL_Successful) + return ErrorCode; + + return HOST_SENDCONTROL_Successful; +} + +/** Issues a Mass Storage class specific request to determine the index of the highest numbered Logical + * Unit in the attached 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[out] MaxLUNIndex Pointer to the location that the maximum LUN index value should be stored + * + * \return A value from the USB_Host_SendControlErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails + */ +uint8_t MassStore_GetMaxLUN(uint8_t* const MaxLUNIndex) +{ + uint8_t ErrorCode; + + USB_ControlRequest = (USB_Request_Header_t) + { + .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE), + .bRequest = MS_REQ_GetMaxLUN, + .wValue = 0, + .wIndex = 0, + .wLength = 1, + }; + + /* Select the control pipe for the request transfer */ + Pipe_SelectPipe(PIPE_CONTROLPIPE); + + if ((ErrorCode = USB_Host_SendControlRequest(MaxLUNIndex)) == HOST_SENDCONTROL_SetupStalled) + { + /* Clear the pipe stall */ + Pipe_ClearStall(); + + /* Some faulty Mass Storage devices don't implement the GET_MAX_LUN request, so assume a single LUN */ + *MaxLUNIndex = 0; + + /* Clear the error, and pretend the request executed correctly if the device STALLed it */ + ErrorCode = HOST_SENDCONTROL_Successful; + } + + return ErrorCode; +} + +/** Issues a SCSI Inquiry command to the attached device, to determine the device's information. This + * gives information on the device's capabilities. + * + * \param[in] LUNIndex Index of the LUN inside the device the command is being addressed to + * \param[out] InquiryPtr Pointer to the inquiry data structure where the inquiry data from the device is to be stored + * + * \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails + */ +uint8_t MassStore_Inquiry(const uint8_t LUNIndex, + SCSI_Inquiry_Response_t* const InquiryPtr) +{ + /* Create a CBW with a SCSI command to issue INQUIRY command */ + MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t) + { + .Signature = MS_CBW_SIGNATURE, + .DataTransferLength = sizeof(SCSI_Inquiry_Response_t), + .Flags = MS_COMMAND_DIR_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) + } + }; + + /* Send the command and any data to the attached device */ + return MassStore_SendCommand(&SCSICommandBlock, InquiryPtr); +} + +/** Issues a SCSI Request Sense command to the attached device, to determine the current SCSI sense information. This + * gives error codes for the last issued SCSI command to the device. + * + * \param[in] LUNIndex Index of the LUN inside the device the command is being addressed to + * \param[out] SensePtr Pointer to the sense data structure where the sense data from the device is to be stored + * + * \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails + */ +uint8_t MassStore_RequestSense(const uint8_t LUNIndex, + SCSI_Request_Sense_Response_t* const SensePtr) +{ + /* Create a CBW with a SCSI command to issue REQUEST SENSE command */ + MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t) + { + .Signature = MS_CBW_SIGNATURE, + .DataTransferLength = sizeof(SCSI_Request_Sense_Response_t), + .Flags = MS_COMMAND_DIR_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) + } + }; + + /* Send the command and any data to the attached device */ + return MassStore_SendCommand(&SCSICommandBlock, SensePtr); +} + +/** Issues a SCSI Device Block Read command to the attached device, to read in one or more data blocks from the + * storage medium into a buffer. + * + * \param[in] LUNIndex Index of the LUN inside the device the command is being addressed to + * \param[in] BlockAddress Start block address to read from + * \param[in] Blocks Number of blocks to read from the device + * \param[in] BlockSize Size in bytes of each block to read + * \param[out] BufferPtr Pointer to the buffer where the read data is to be written to + * + * \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails + */ +uint8_t MassStore_ReadDeviceBlock(const uint8_t LUNIndex, + const uint32_t BlockAddress, + const uint8_t Blocks, + const uint16_t BlockSize, + void* BufferPtr) +{ + /* Create a CBW with a SCSI command to read in the given blocks from the device */ + MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t) + { + .Signature = MS_CBW_SIGNATURE, + .DataTransferLength = ((uint32_t)Blocks * BlockSize), + .Flags = MS_COMMAND_DIR_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 + 0x00, // Reserved + 0x00, // MSB of Total Blocks to Read + Blocks, // LSB of Total Blocks to Read + 0x00 // Unused (control) + } + }; + + /* Send the command and any data to the attached device */ + return MassStore_SendCommand(&SCSICommandBlock, BufferPtr); +} + +/** Issues a SCSI Device Block Write command to the attached device, to write one or more data blocks to the + * storage medium from a buffer. + * + * \param[in] LUNIndex Index of the LUN inside the device the command is being addressed to + * \param[in] BlockAddress Start block address to write to + * \param[in] Blocks Number of blocks to write to in the device + * \param[in] BlockSize Size in bytes of each block to write + * \param[in] BufferPtr Pointer to the buffer where the write data is to be sourced from + * + * \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails + */ +uint8_t MassStore_WriteDeviceBlock(const uint8_t LUNIndex, + const uint32_t BlockAddress, + const uint8_t Blocks, + const uint16_t BlockSize, + void* BufferPtr) +{ + /* Create a CBW with a SCSI command to write the given blocks to the device */ + MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t) + { + .Signature = MS_CBW_SIGNATURE, + .DataTransferLength = ((uint32_t)Blocks * BlockSize), + .Flags = MS_COMMAND_DIR_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 + 0x00, // Unused (reserved) + 0x00, // MSB of Total Blocks to Write + Blocks, // LSB of Total Blocks to Write + 0x00 // Unused (control) + } + }; + + /* Send the command and any data to the attached device */ + return MassStore_SendCommand(&SCSICommandBlock, BufferPtr); +} + +/** Issues a SCSI Device Test Unit Ready command to the attached device, to determine if the device is ready to accept + * other commands. + * + * \param[in] LUNIndex Index of the LUN inside the device the command is being addressed to + * + * \return A value from the Pipe_Stream_RW_ErrorCodes_t enum, or MASS_STORE_SCSI_COMMAND_FAILED if the SCSI command fails + */ +uint8_t MassStore_TestUnitReady(const uint8_t LUNIndex) +{ + /* Create a CBW with a SCSI command to issue TEST UNIT READY command */ + MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t) + { + .Signature = MS_CBW_SIGNATURE, + .DataTransferLength = 0, + .Flags = MS_COMMAND_DIR_DATA_IN, + .LUN = LUNIndex, + .SCSICommandLength = 6, + .SCSIComm |