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LibrePilot/flight/PiOS/STM32F2xx/Libraries/msd/msd_bot.c

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/******************** (C) COPYRIGHT 2009 STMicroelectronics ********************
* File Name : usb_bot.c
* Author : MCD Application Team
* Version : V3.0.1
* Date : 04/27/2009
* Description : BOT State Machine management
********************************************************************************
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include <pios.h>
#include <usb_lib.h>
#include "msd.h"
#include "msd_scsi.h"
#include "msd_bot.h"
#include "msd_memory.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Global variables ----------------------------------------------------------*/
uint8_t MSD_Bot_State;
uint8_t MSD_Bulk_Data_Buff[MSD_BULK_MAX_PACKET_SIZE]; /* data buffer*/
uint16_t MSD_Data_Len;
Bulk_Only_CBW MSD_CBW;
Bulk_Only_CSW MSD_CSW;
/* Private variables ---------------------------------------------------------*/
static uint32_t SCSI_LBA , SCSI_BlkLen;
/* Extern variables ----------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Extern function prototypes ------------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/*******************************************************************************
* Function Name : MSD_Mass_Storage_In
* Description : Mass Storage IN transfer.
* Input : None.
* Output : None.
* Return : None.
*******************************************************************************/
void MSD_Mass_Storage_In (void)
{
switch (MSD_Bot_State)
{
case BOT_CSW_Send:
case BOT_ERROR:
MSD_Bot_State = BOT_IDLE;
SetEPRxStatus(ENDP2, EP_RX_VALID);/* enable the Endpoint to recive the next cmd*/
break;
case BOT_DATA_IN:
switch (MSD_CBW.CB[0])
{
case SCSI_READ10:
MSD_SCSI_Read10_Cmd(MSD_CBW.bLUN , SCSI_LBA , SCSI_BlkLen);
break;
}
break;
case BOT_DATA_IN_LAST:
MSD_Set_CSW (CSW_CMD_PASSED, SEND_CSW_ENABLE);
SetEPRxStatus(ENDP2, EP_RX_VALID);
break;
default:
break;
}
}
/*******************************************************************************
* Function Name : MSD_Mass_Storage_Out
* Description : Mass Storage OUT transfer.
* Input : None.
* Output : None.
* Return : None.
*******************************************************************************/
void MSD_Mass_Storage_Out (void)
{
uint8_t CMD;
CMD = MSD_CBW.CB[0];
MSD_Data_Len = GetEPRxCount(ENDP2);
PMAToUserBufferCopy(MSD_Bulk_Data_Buff, MSD_ENDP2_RXADDR, MSD_Data_Len);
switch (MSD_Bot_State)
{
case BOT_IDLE:
MSD_CBW_Decode();
break;
case BOT_DATA_OUT:
if (CMD == SCSI_WRITE10)
{
MSD_SCSI_Write10_Cmd(MSD_CBW.bLUN , SCSI_LBA , SCSI_BlkLen);
break;
}
MSD_Bot_Abort(DIR_OUT);
MSD_Set_Scsi_Sense_Data(MSD_CBW.bLUN, ILLEGAL_REQUEST, INVALID_FIELED_IN_COMMAND);
MSD_Set_CSW (CSW_PHASE_ERROR, SEND_CSW_DISABLE);
break;
default:
MSD_Bot_Abort(BOTH_DIR);
MSD_Set_Scsi_Sense_Data(MSD_CBW.bLUN, ILLEGAL_REQUEST, INVALID_FIELED_IN_COMMAND);
MSD_Set_CSW (CSW_PHASE_ERROR, SEND_CSW_DISABLE);
break;
}
}
/*******************************************************************************
* Function Name : MSD_CBW_Decode
* Description : Decode the received CBW and call the related SCSI command
* routine.
* Input : None.
* Output : None.
* Return : None.
*******************************************************************************/
void MSD_CBW_Decode(void)
{
uint32_t Counter;
for (Counter = 0; Counter < MSD_Data_Len; Counter++)
{
*((uint8_t *)&MSD_CBW + Counter) = MSD_Bulk_Data_Buff[Counter];
}
MSD_CSW.dTag = MSD_CBW.dTag;
MSD_CSW.dDataResidue = MSD_CBW.dDataLength;
if (MSD_Data_Len != BOT_CBW_PACKET_LENGTH)
{
MSD_Bot_Abort(BOTH_DIR);
/* reset the MSD_CBW.dSignature to desible the clear feature until receiving a Mass storage reset*/
MSD_CBW.dSignature = 0;
MSD_Set_Scsi_Sense_Data(MSD_CBW.bLUN, ILLEGAL_REQUEST, PARAMETER_LIST_LENGTH_ERROR);
MSD_Set_CSW (CSW_CMD_FAILED, SEND_CSW_DISABLE);
return;
}
if ((MSD_CBW.CB[0] == SCSI_READ10 ) || (MSD_CBW.CB[0] == SCSI_WRITE10 ))
{
/* Calculate Logical Block Address */
SCSI_LBA = (MSD_CBW.CB[2] << 24) | (MSD_CBW.CB[3] << 16) | (MSD_CBW.CB[4] << 8) | MSD_CBW.CB[5];
/* Calculate the Number of Blocks to transfer */
SCSI_BlkLen = (MSD_CBW.CB[7] << 8) | MSD_CBW.CB[8];
}
if (MSD_CBW.dSignature == BOT_CBW_SIGNATURE)
{
/* Valid CBW */
if ((MSD_CBW.bLUN >= MSD_NUM_LUN) || (MSD_CBW.bCBLength < 1) || (MSD_CBW.bCBLength > 16))
{
MSD_Bot_Abort(BOTH_DIR);
MSD_Set_Scsi_Sense_Data(MSD_CBW.bLUN, ILLEGAL_REQUEST, INVALID_FIELED_IN_COMMAND);
MSD_Set_CSW (CSW_CMD_FAILED, SEND_CSW_DISABLE);
}
else
{
switch (MSD_CBW.CB[0])
{
case SCSI_REQUEST_SENSE:
MSD_SCSI_RequestSense_Cmd (MSD_CBW.bLUN);
break;
case SCSI_INQUIRY:
MSD_SCSI_Inquiry_Cmd(MSD_CBW.bLUN);
break;
case SCSI_START_STOP_UNIT:
MSD_SCSI_Start_Stop_Unit_Cmd(MSD_CBW.bLUN);
MSD_LUN_AvailableSet(MSD_CBW.bLUN, 0);
break;
case SCSI_ALLOW_MEDIUM_REMOVAL:
MSD_SCSI_Start_Stop_Unit_Cmd(MSD_CBW.bLUN);
break;
case SCSI_MODE_SENSE6:
MSD_SCSI_ModeSense6_Cmd (MSD_CBW.bLUN);
break;
case SCSI_MODE_SENSE10:
MSD_SCSI_ModeSense10_Cmd (MSD_CBW.bLUN);
break;
case SCSI_READ_FORMAT_CAPACITIES:
MSD_SCSI_ReadFormatCapacity_Cmd(MSD_CBW.bLUN);
break;
case SCSI_READ_CAPACITY10:
MSD_SCSI_ReadCapacity10_Cmd(MSD_CBW.bLUN);
break;
case SCSI_TEST_UNIT_READY:
MSD_SCSI_TestUnitReady_Cmd(MSD_CBW.bLUN);
break;
case SCSI_READ10:
MSD_SCSI_Read10_Cmd(MSD_CBW.bLUN, SCSI_LBA , SCSI_BlkLen);
break;
case SCSI_WRITE10:
MSD_SCSI_Write10_Cmd(MSD_CBW.bLUN, SCSI_LBA , SCSI_BlkLen);
break;
case SCSI_VERIFY10:
MSD_SCSI_Verify10_Cmd(MSD_CBW.bLUN);
break;
case SCSI_FORMAT_UNIT:
MSD_SCSI_Format_Cmd(MSD_CBW.bLUN);
break;
/*Unsupported command*/
case SCSI_MODE_SELECT10:
MSD_SCSI_Mode_Select10_Cmd(MSD_CBW.bLUN);
break;
case SCSI_MODE_SELECT6:
MSD_SCSI_Mode_Select6_Cmd(MSD_CBW.bLUN);
break;
case SCSI_SEND_DIAGNOSTIC:
MSD_SCSI_Send_Diagnostic_Cmd(MSD_CBW.bLUN);
break;
case SCSI_READ6:
MSD_SCSI_Read6_Cmd(MSD_CBW.bLUN);
break;
case SCSI_READ12:
MSD_SCSI_Read12_Cmd(MSD_CBW.bLUN);
break;
case SCSI_READ16:
MSD_SCSI_Read16_Cmd(MSD_CBW.bLUN);
break;
case SCSI_READ_CAPACITY16:
MSD_SCSI_READ_CAPACITY16_Cmd(MSD_CBW.bLUN);
break;
case SCSI_WRITE6:
MSD_SCSI_Write6_Cmd(MSD_CBW.bLUN);
break;
case SCSI_WRITE12:
MSD_SCSI_Write12_Cmd(MSD_CBW.bLUN);
break;
case SCSI_WRITE16:
MSD_SCSI_Write16_Cmd(MSD_CBW.bLUN);
break;
case SCSI_VERIFY12:
MSD_SCSI_Verify12_Cmd(MSD_CBW.bLUN);
break;
case SCSI_VERIFY16:
MSD_SCSI_Verify16_Cmd(MSD_CBW.bLUN);
break;
default:
{
MSD_Bot_Abort(BOTH_DIR);
MSD_Set_Scsi_Sense_Data(MSD_CBW.bLUN, ILLEGAL_REQUEST, INVALID_COMMAND);
MSD_Set_CSW (CSW_CMD_FAILED, SEND_CSW_DISABLE);
}
}
}
}
else
{
/* Invalid CBW */
MSD_Bot_Abort(BOTH_DIR);
MSD_Set_Scsi_Sense_Data(MSD_CBW.bLUN, ILLEGAL_REQUEST, INVALID_COMMAND);
MSD_Set_CSW (CSW_CMD_FAILED, SEND_CSW_DISABLE);
}
}
/*******************************************************************************
* Function Name : MSD_Transfer_Data_Request
* Description : Send the request response to the PC HOST.
* Input : uint8_t* Data_Address : point to the data to transfer.
* uint16_t Data_Length : the nember of Bytes to transfer.
* Output : None.
* Return : None.
*******************************************************************************/
void MSD_Transfer_Data_Request(uint8_t* Data_Pointer, uint16_t Data_Len)
{
UserToPMABufferCopy(Data_Pointer, MSD_ENDP1_TXADDR, Data_Len);
SetEPTxCount(ENDP1, Data_Len);
SetEPTxStatus(ENDP1, EP_TX_VALID);
MSD_Bot_State = BOT_DATA_IN_LAST;
MSD_CSW.dDataResidue -= Data_Len;
MSD_CSW.bStatus = CSW_CMD_PASSED;
}
/*******************************************************************************
* Function Name : MSD_Set_CSW
* Description : Set the SCW with the needed fields.
* Input : uint8_t CSW_Status this filed can be CSW_CMD_PASSED,CSW_CMD_FAILED,
* or CSW_PHASE_ERROR.
* Output : None.
* Return : None.
*******************************************************************************/
void MSD_Set_CSW (uint8_t CSW_Status, uint8_t Send_Permission)
{
MSD_CSW.dSignature = BOT_CSW_SIGNATURE;
MSD_CSW.bStatus = CSW_Status;
UserToPMABufferCopy(((uint8_t *)& MSD_CSW), MSD_ENDP1_TXADDR, CSW_DATA_LENGTH);
SetEPTxCount(ENDP1, CSW_DATA_LENGTH);
MSD_Bot_State = BOT_ERROR;
if (Send_Permission)
{
MSD_Bot_State = BOT_CSW_Send;
SetEPTxStatus(ENDP1, EP_TX_VALID);
}
}
/*******************************************************************************
* Function Name : MSD_Bot_Abort
* Description : Stall the needed Endpoint according to the selected direction.
* Input : Endpoint direction IN, OUT or both directions
* Output : None.
* Return : None.
*******************************************************************************/
void MSD_Bot_Abort(uint8_t Direction)
{
switch (Direction)
{
case DIR_IN :
SetEPTxStatus(ENDP1, EP_TX_STALL);
break;
case DIR_OUT :
SetEPRxStatus(ENDP2, EP_RX_STALL);
break;
case BOTH_DIR :
SetEPTxStatus(ENDP1, EP_TX_STALL);
SetEPRxStatus(ENDP2, EP_RX_STALL);
break;
default:
break;
}
}
/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
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