msdscsi.c File Reference

SCSI interface for Mass Storage Devices (MSD).

License

Copyright 2018 Silicon Laboratories Inc. www.silabs.com

SPDX-License-Identifier: Zlib

The licensor of this software is Silicon Laboratories Inc.

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

Definition in file msdscsi.c .

#include " em_usb.h "
#include " msdscsi.h "
#include " msdbot.h "

Functions

bool MSDSCSI_Init (USBH_Ep_TypeDef *out, USBH_Ep_TypeDef *in)
MSDSCSI module initialization.
bool MSDSCSI_Inquiry ( MSDSCSI_InquiryData_TypeDef *data)
Issue a SCSI Inquiry command.
bool MSDSCSI_Read10 (uint32_t lba, uint16_t sectors, void *data)
Issue a SCSI Read(10) command.
bool MSDSCSI_ReadCapacity ( MSDSCSI_ReadCapacityData_TypeDef *data)
Issue a SCSI Read Capacity command.
bool MSDSCSI_RequestSense ( MSDSCSI_RequestSenseData_TypeDef *data)
Issue a SCSI Request Sense command.
bool MSDSCSI_TestUnitReady (void)
Issue a SCSI Test Unit Ready command.
bool MSDSCSI_Write10 (uint32_t lba, uint16_t sectors, const void *data)
Perform a SCSI Write(10) command.

Function Documentation

bool MSDSCSI_Init ( USBH_Ep_TypeDef * out,
USBH_Ep_TypeDef * in
)

MSDSCSI module initialization.

Parameters
[in] out Pointer to an MSD bulk OUT endpoint structure.
[in] in Pointer to an MSD bulk IN endpoint structure.
Returns
Returns true on success, false otherwise.

Definition at line 170 of file msdscsi.c .

References MSDBOT_Init() , MSDBOT_STATUS_OK , SCSI_INQUIRYDATA_LEN , SCSI_READ10_LEN , SCSI_READCAPACITYDATA_LEN , SCSI_REQUESTSENSEDATA_LEN , and SCSI_WRITE10_LEN .

Referenced by MSDH_Init() .

bool MSDSCSI_Inquiry ( MSDSCSI_InquiryData_TypeDef * data )

Issue a SCSI Inquiry command.

Parameters
[out] data Inquiry response data buffer.
Returns
Returns true on success, false otherwise.

Definition at line 202 of file msdscsi.c .

References MSDBOT_Xfer() , and SCSI_INQUIRYDATA_LEN .

Referenced by MSDH_Init() .

bool MSDSCSI_Read10 ( uint32_t lba,
uint16_t sectors,
void * data
)

Issue a SCSI Read(10) command.

Parameters
[in] lba Sector address (LBA) of first sector to read.
[in] sectors Number of sectors to read.
[out] data Data buffer through which data is returned to caller.
Returns
Returns true on success, false otherwise.

Definition at line 227 of file msdscsi.c .

References MSDSCSI_Read10_TypeDef::Lba , MSDBOT_Xfer() , SL_ALIGN , SL_ATTRIBUTE_ALIGN , and MSDSCSI_Read10_TypeDef::TransferLength .

Referenced by MSDH_ReadSectors() .

bool MSDSCSI_ReadCapacity ( MSDSCSI_ReadCapacityData_TypeDef * data )

Issue a SCSI Read Capacity command.

Parameters
[out] data Read Capacity response data buffer.
Returns
Returns true on success, false otherwise.

Definition at line 255 of file msdscsi.c .

References MSDSCSI_ReadCapacityData_TypeDef::LogicalBlockAddress , MSDSCSI_ReadCapacityData_TypeDef::LogicalBlockLength , MSDBOT_Xfer() , and SCSI_READCAPACITYDATA_LEN .

Referenced by MSDH_GetBlockSize() , MSDH_GetSectorCount() , MSDH_GetSectorSize() , and MSDH_Init() .

bool MSDSCSI_RequestSense ( MSDSCSI_RequestSenseData_TypeDef * data )

Issue a SCSI Request Sense command.

Parameters
[out] data Request Sense response data buffer.
Returns
Returns true on success, false otherwise.

Definition at line 281 of file msdscsi.c .

References MSDBOT_Xfer() , and SCSI_REQUESTSENSEDATA_LEN .

Referenced by MSDH_Init() .

bool MSDSCSI_TestUnitReady ( void )

Issue a SCSI Test Unit Ready command.

Returns
Returns true if device ready, false if device not ready or cmd transfer error.

Definition at line 298 of file msdscsi.c .

References MSDBOT_STATUS_OK , and MSDBOT_Xfer() .

Referenced by MSDH_Init() .

bool MSDSCSI_Write10 ( uint32_t lba,
uint16_t sectors,
const void * data
)

Perform a SCSI Write(10) command.

Parameters
[in] lba Sector address (LBA) of first sector to write.
[in] sectors Number of sectors to write.
[out] data Data buffer containing data to be written.
Returns
Returns true on success, false otherwise.

Definition at line 323 of file msdscsi.c .

References MSDSCSI_Write10_TypeDef::Lba , MSDBOT_Xfer() , SL_ALIGN , SL_ATTRIBUTE_ALIGN , and MSDSCSI_Write10_TypeDef::TransferLength .

Referenced by MSDH_WriteSectors() .