771 lines
20 KiB
C
771 lines
20 KiB
C
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/**
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******************************************************************************
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* @file usbd_msc_scsi.c
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* @author MCD Application Team
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* @version V2.0.0
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* @date 18-February-2014
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* @brief This file provides all the USBD SCSI layer functions.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2>
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*
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* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.st.com/software_license_agreement_liberty_v2
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "usbd_msc_bot.h"
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#include "usbd_msc_scsi.h"
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#include "usbd_msc.h"
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#include "usbd_msc_data.h"
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/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
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* @{
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*/
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/** @defgroup MSC_SCSI
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* @brief Mass storage SCSI layer module
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* @{
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*/
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/** @defgroup MSC_SCSI_Private_TypesDefinitions
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup MSC_SCSI_Private_Defines
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup MSC_SCSI_Private_Macros
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup MSC_SCSI_Private_Variables
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup MSC_SCSI_Private_FunctionPrototypes
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* @{
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*/
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static int8_t SCSI_TestUnitReady(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params);
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static int8_t SCSI_Inquiry(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params);
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static int8_t SCSI_ReadFormatCapacity(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params);
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static int8_t SCSI_ReadCapacity10(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params);
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static int8_t SCSI_RequestSense (USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params);
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static int8_t SCSI_StartStopUnit(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params);
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static int8_t SCSI_ModeSense6 (USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params);
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static int8_t SCSI_ModeSense10 (USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params);
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static int8_t SCSI_Write10(USBD_HandleTypeDef *pdev, uint8_t lun , uint8_t *params);
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static int8_t SCSI_Read10(USBD_HandleTypeDef *pdev, uint8_t lun , uint8_t *params);
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static int8_t SCSI_Verify10(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params);
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static int8_t SCSI_CheckAddressRange (USBD_HandleTypeDef *pdev,
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uint8_t lun ,
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uint32_t blk_offset ,
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uint16_t blk_nbr);
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static int8_t SCSI_ProcessRead (USBD_HandleTypeDef *pdev,
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uint8_t lun);
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static int8_t SCSI_ProcessWrite (USBD_HandleTypeDef *pdev,
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uint8_t lun);
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/**
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* @}
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*/
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/** @defgroup MSC_SCSI_Private_Functions
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* @{
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*/
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/**
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* @brief SCSI_ProcessCmd
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* Process SCSI commands
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* @param pdev: device instance
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* @param lun: Logical unit number
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* @param params: Command parameters
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* @retval status
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*/
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int8_t SCSI_ProcessCmd(USBD_HandleTypeDef *pdev,
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uint8_t lun,
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uint8_t *params)
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{
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switch (params[0])
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{
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case SCSI_TEST_UNIT_READY:
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return SCSI_TestUnitReady(pdev, lun, params);
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case SCSI_REQUEST_SENSE:
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return SCSI_RequestSense (pdev, lun, params);
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case SCSI_INQUIRY:
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return SCSI_Inquiry(pdev, lun, params);
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case SCSI_START_STOP_UNIT:
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return SCSI_StartStopUnit(pdev, lun, params);
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case SCSI_ALLOW_MEDIUM_REMOVAL:
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return SCSI_StartStopUnit(pdev, lun, params);
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case SCSI_MODE_SENSE6:
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return SCSI_ModeSense6 (pdev, lun, params);
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case SCSI_MODE_SENSE10:
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return SCSI_ModeSense10 (pdev, lun, params);
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case SCSI_READ_FORMAT_CAPACITIES:
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return SCSI_ReadFormatCapacity(pdev, lun, params);
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case SCSI_READ_CAPACITY10:
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return SCSI_ReadCapacity10(pdev, lun, params);
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case SCSI_READ10:
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return SCSI_Read10(pdev, lun, params);
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case SCSI_WRITE10:
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return SCSI_Write10(pdev, lun, params);
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case SCSI_VERIFY10:
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return SCSI_Verify10(pdev, lun, params);
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default:
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SCSI_SenseCode(pdev,
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lun,
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ILLEGAL_REQUEST,
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INVALID_CDB);
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return -1;
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}
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}
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/**
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* @brief SCSI_TestUnitReady
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* Process SCSI Test Unit Ready Command
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* @param lun: Logical unit number
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* @param params: Command parameters
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* @retval status
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*/
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static int8_t SCSI_TestUnitReady(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params)
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{
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USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
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/* case 9 : Hi > D0 */
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if (hmsc->cbw.dDataLength != 0)
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{
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SCSI_SenseCode(pdev,
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hmsc->cbw.bLUN,
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ILLEGAL_REQUEST,
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INVALID_CDB);
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return -1;
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}
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if(((USBD_StorageTypeDef *)pdev->pUserData)->IsReady(lun) !=0 )
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{
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SCSI_SenseCode(pdev,
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lun,
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NOT_READY,
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MEDIUM_NOT_PRESENT);
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hmsc->bot_state = USBD_BOT_NO_DATA;
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return -1;
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}
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hmsc->bot_data_length = 0;
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return 0;
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}
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/**
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* @brief SCSI_Inquiry
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* Process Inquiry command
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* @param lun: Logical unit number
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* @param params: Command parameters
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* @retval status
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*/
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static int8_t SCSI_Inquiry(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params)
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{
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uint8_t* pPage;
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uint16_t len;
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USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
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if (params[1] & 0x01)/*Evpd is set*/
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{
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pPage = (uint8_t *)MSC_Page00_Inquiry_Data;
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len = LENGTH_INQUIRY_PAGE00;
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}
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else
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{
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pPage = (uint8_t *)&((USBD_StorageTypeDef *)pdev->pUserData)->pInquiry[lun * STANDARD_INQUIRY_DATA_LEN];
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len = pPage[4] + 5;
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if (params[4] <= len)
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{
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len = params[4];
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}
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}
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hmsc->bot_data_length = len;
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while (len)
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{
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len--;
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hmsc->bot_data[len] = pPage[len];
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}
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return 0;
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}
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/**
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* @brief SCSI_ReadCapacity10
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* Process Read Capacity 10 command
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* @param lun: Logical unit number
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* @param params: Command parameters
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* @retval status
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*/
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static int8_t SCSI_ReadCapacity10(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params)
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{
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USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
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if(((USBD_StorageTypeDef *)pdev->pUserData)->GetCapacity(lun, &hmsc->scsi_blk_nbr, &hmsc->scsi_blk_size) != 0)
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{
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SCSI_SenseCode(pdev,
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lun,
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NOT_READY,
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MEDIUM_NOT_PRESENT);
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return -1;
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}
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else
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{
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hmsc->bot_data[0] = (uint8_t)((hmsc->scsi_blk_nbr - 1) >> 24);
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hmsc->bot_data[1] = (uint8_t)((hmsc->scsi_blk_nbr - 1) >> 16);
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hmsc->bot_data[2] = (uint8_t)((hmsc->scsi_blk_nbr - 1) >> 8);
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hmsc->bot_data[3] = (uint8_t)(hmsc->scsi_blk_nbr - 1);
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hmsc->bot_data[4] = (uint8_t)(hmsc->scsi_blk_size >> 24);
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hmsc->bot_data[5] = (uint8_t)(hmsc->scsi_blk_size >> 16);
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hmsc->bot_data[6] = (uint8_t)(hmsc->scsi_blk_size >> 8);
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hmsc->bot_data[7] = (uint8_t)(hmsc->scsi_blk_size);
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hmsc->bot_data_length = 8;
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return 0;
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}
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}
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/**
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* @brief SCSI_ReadFormatCapacity
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* Process Read Format Capacity command
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* @param lun: Logical unit number
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* @param params: Command parameters
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* @retval status
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*/
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static int8_t SCSI_ReadFormatCapacity(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params)
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{
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USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
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uint16_t blk_size;
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uint32_t blk_nbr;
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uint16_t i;
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for(i=0 ; i < 12 ; i++)
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{
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hmsc->bot_data[i] = 0;
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}
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if(((USBD_StorageTypeDef *)pdev->pUserData)->GetCapacity(lun, &blk_nbr, &blk_size) != 0)
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{
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SCSI_SenseCode(pdev,
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lun,
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NOT_READY,
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MEDIUM_NOT_PRESENT);
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return -1;
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}
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else
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{
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hmsc->bot_data[3] = 0x08;
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hmsc->bot_data[4] = (uint8_t)((blk_nbr - 1) >> 24);
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hmsc->bot_data[5] = (uint8_t)((blk_nbr - 1) >> 16);
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hmsc->bot_data[6] = (uint8_t)((blk_nbr - 1) >> 8);
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hmsc->bot_data[7] = (uint8_t)(blk_nbr - 1);
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hmsc->bot_data[8] = 0x02;
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hmsc->bot_data[9] = (uint8_t)(blk_size >> 16);
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hmsc->bot_data[10] = (uint8_t)(blk_size >> 8);
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hmsc->bot_data[11] = (uint8_t)(blk_size);
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hmsc->bot_data_length = 12;
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return 0;
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}
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}
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/**
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* @brief SCSI_ModeSense6
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* Process Mode Sense6 command
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* @param lun: Logical unit number
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* @param params: Command parameters
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* @retval status
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*/
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static int8_t SCSI_ModeSense6 (USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params)
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{
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USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
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uint16_t len = 8 ;
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hmsc->bot_data_length = len;
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while (len)
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{
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len--;
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hmsc->bot_data[len] = MSC_Mode_Sense6_data[len];
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}
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return 0;
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}
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/**
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* @brief SCSI_ModeSense10
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* Process Mode Sense10 command
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* @param lun: Logical unit number
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* @param params: Command parameters
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* @retval status
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*/
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static int8_t SCSI_ModeSense10 (USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params)
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{
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uint16_t len = 8;
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USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
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hmsc->bot_data_length = len;
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while (len)
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{
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len--;
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hmsc->bot_data[len] = MSC_Mode_Sense10_data[len];
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}
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return 0;
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}
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/**
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* @brief SCSI_RequestSense
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* Process Request Sense command
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* @param lun: Logical unit number
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* @param params: Command parameters
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|
* @retval status
|
||
|
|
*/
|
||
|
|
|
||
|
|
static int8_t SCSI_RequestSense (USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params)
|
||
|
|
{
|
||
|
|
uint8_t i;
|
||
|
|
USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
|
||
|
|
|
||
|
|
for(i=0 ; i < REQUEST_SENSE_DATA_LEN ; i++)
|
||
|
|
{
|
||
|
|
hmsc->bot_data[i] = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
hmsc->bot_data[0] = 0x70;
|
||
|
|
hmsc->bot_data[7] = REQUEST_SENSE_DATA_LEN - 6;
|
||
|
|
|
||
|
|
if((hmsc->scsi_sense_head != hmsc->scsi_sense_tail)) {
|
||
|
|
|
||
|
|
hmsc->bot_data[2] = hmsc->scsi_sense[hmsc->scsi_sense_head].Skey;
|
||
|
|
hmsc->bot_data[12] = hmsc->scsi_sense[hmsc->scsi_sense_head].w.b.ASCQ;
|
||
|
|
hmsc->bot_data[13] = hmsc->scsi_sense[hmsc->scsi_sense_head].w.b.ASC;
|
||
|
|
hmsc->scsi_sense_head++;
|
||
|
|
|
||
|
|
if (hmsc->scsi_sense_head == SENSE_LIST_DEEPTH)
|
||
|
|
{
|
||
|
|
hmsc->scsi_sense_head = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
hmsc->bot_data_length = REQUEST_SENSE_DATA_LEN;
|
||
|
|
|
||
|
|
if (params[4] <= REQUEST_SENSE_DATA_LEN)
|
||
|
|
{
|
||
|
|
hmsc->bot_data_length = params[4];
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief SCSI_SenseCode
|
||
|
|
* Load the last error code in the error list
|
||
|
|
* @param lun: Logical unit number
|
||
|
|
* @param sKey: Sense Key
|
||
|
|
* @param ASC: Additional Sense Key
|
||
|
|
* @retval none
|
||
|
|
|
||
|
|
*/
|
||
|
|
void SCSI_SenseCode(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t sKey, uint8_t ASC)
|
||
|
|
{
|
||
|
|
USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
|
||
|
|
|
||
|
|
hmsc->scsi_sense[hmsc->scsi_sense_tail].Skey = sKey;
|
||
|
|
hmsc->scsi_sense[hmsc->scsi_sense_tail].w.ASC = ASC << 8;
|
||
|
|
hmsc->scsi_sense_tail++;
|
||
|
|
if (hmsc->scsi_sense_tail == SENSE_LIST_DEEPTH)
|
||
|
|
{
|
||
|
|
hmsc->scsi_sense_tail = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* @brief SCSI_StartStopUnit
|
||
|
|
* Process Start Stop Unit command
|
||
|
|
* @param lun: Logical unit number
|
||
|
|
* @param params: Command parameters
|
||
|
|
* @retval status
|
||
|
|
*/
|
||
|
|
static int8_t SCSI_StartStopUnit(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params)
|
||
|
|
{
|
||
|
|
USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
|
||
|
|
hmsc->bot_data_length = 0;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief SCSI_Read10
|
||
|
|
* Process Read10 command
|
||
|
|
* @param lun: Logical unit number
|
||
|
|
* @param params: Command parameters
|
||
|
|
* @retval status
|
||
|
|
*/
|
||
|
|
static int8_t SCSI_Read10(USBD_HandleTypeDef *pdev, uint8_t lun , uint8_t *params)
|
||
|
|
{
|
||
|
|
USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
|
||
|
|
|
||
|
|
if(hmsc->bot_state == USBD_BOT_IDLE) /* Idle */
|
||
|
|
{
|
||
|
|
|
||
|
|
/* case 10 : Ho <> Di */
|
||
|
|
|
||
|
|
if ((hmsc->cbw.bmFlags & 0x80) != 0x80)
|
||
|
|
{
|
||
|
|
SCSI_SenseCode(pdev,
|
||
|
|
hmsc->cbw.bLUN,
|
||
|
|
ILLEGAL_REQUEST,
|
||
|
|
INVALID_CDB);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(((USBD_StorageTypeDef *)pdev->pUserData)->IsReady(lun) !=0 )
|
||
|
|
{
|
||
|
|
SCSI_SenseCode(pdev,
|
||
|
|
lun,
|
||
|
|
NOT_READY,
|
||
|
|
MEDIUM_NOT_PRESENT);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
hmsc->scsi_blk_addr = (params[2] << 24) | \
|
||
|
|
(params[3] << 16) | \
|
||
|
|
(params[4] << 8) | \
|
||
|
|
params[5];
|
||
|
|
|
||
|
|
hmsc->scsi_blk_len = (params[7] << 8) | \
|
||
|
|
params[8];
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
if( SCSI_CheckAddressRange(pdev, lun, hmsc->scsi_blk_addr, hmsc->scsi_blk_len) < 0)
|
||
|
|
{
|
||
|
|
return -1; /* error */
|
||
|
|
}
|
||
|
|
|
||
|
|
hmsc->bot_state = USBD_BOT_DATA_IN;
|
||
|
|
hmsc->scsi_blk_addr *= hmsc->scsi_blk_size;
|
||
|
|
hmsc->scsi_blk_len *= hmsc->scsi_blk_size;
|
||
|
|
|
||
|
|
/* cases 4,5 : Hi <> Dn */
|
||
|
|
if (hmsc->cbw.dDataLength != hmsc->scsi_blk_len)
|
||
|
|
{
|
||
|
|
SCSI_SenseCode(pdev,
|
||
|
|
hmsc->cbw.bLUN,
|
||
|
|
ILLEGAL_REQUEST,
|
||
|
|
INVALID_CDB);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
hmsc->bot_data_length = MSC_MEDIA_PACKET;
|
||
|
|
|
||
|
|
return SCSI_ProcessRead(pdev, lun);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief SCSI_Write10
|
||
|
|
* Process Write10 command
|
||
|
|
* @param lun: Logical unit number
|
||
|
|
* @param params: Command parameters
|
||
|
|
* @retval status
|
||
|
|
*/
|
||
|
|
|
||
|
|
static int8_t SCSI_Write10 (USBD_HandleTypeDef *pdev, uint8_t lun , uint8_t *params)
|
||
|
|
{
|
||
|
|
USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
|
||
|
|
|
||
|
|
if (hmsc->bot_state == USBD_BOT_IDLE) /* Idle */
|
||
|
|
{
|
||
|
|
|
||
|
|
/* case 8 : Hi <> Do */
|
||
|
|
|
||
|
|
if ((hmsc->cbw.bmFlags & 0x80) == 0x80)
|
||
|
|
{
|
||
|
|
SCSI_SenseCode(pdev,
|
||
|
|
hmsc->cbw.bLUN,
|
||
|
|
ILLEGAL_REQUEST,
|
||
|
|
INVALID_CDB);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check whether Media is ready */
|
||
|
|
if(((USBD_StorageTypeDef *)pdev->pUserData)->IsReady(lun) !=0 )
|
||
|
|
{
|
||
|
|
SCSI_SenseCode(pdev,
|
||
|
|
lun,
|
||
|
|
NOT_READY,
|
||
|
|
MEDIUM_NOT_PRESENT);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check If media is write-protected */
|
||
|
|
if(((USBD_StorageTypeDef *)pdev->pUserData)->IsWriteProtected(lun) !=0 )
|
||
|
|
{
|
||
|
|
SCSI_SenseCode(pdev,
|
||
|
|
lun,
|
||
|
|
NOT_READY,
|
||
|
|
WRITE_PROTECTED);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
hmsc->scsi_blk_addr = (params[2] << 24) | \
|
||
|
|
(params[3] << 16) | \
|
||
|
|
(params[4] << 8) | \
|
||
|
|
params[5];
|
||
|
|
hmsc->scsi_blk_len = (params[7] << 8) | \
|
||
|
|
params[8];
|
||
|
|
|
||
|
|
/* check if LBA address is in the right range */
|
||
|
|
if(SCSI_CheckAddressRange(pdev,
|
||
|
|
lun,
|
||
|
|
hmsc->scsi_blk_addr,
|
||
|
|
hmsc->scsi_blk_len) < 0)
|
||
|
|
{
|
||
|
|
return -1; /* error */
|
||
|
|
}
|
||
|
|
|
||
|
|
hmsc->scsi_blk_addr *= hmsc->scsi_blk_size;
|
||
|
|
hmsc->scsi_blk_len *= hmsc->scsi_blk_size;
|
||
|
|
|
||
|
|
/* cases 3,11,13 : Hn,Ho <> D0 */
|
||
|
|
if (hmsc->cbw.dDataLength != hmsc->scsi_blk_len)
|
||
|
|
{
|
||
|
|
SCSI_SenseCode(pdev,
|
||
|
|
hmsc->cbw.bLUN,
|
||
|
|
ILLEGAL_REQUEST,
|
||
|
|
INVALID_CDB);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Prepare EP to receive first data packet */
|
||
|
|
hmsc->bot_state = USBD_BOT_DATA_OUT;
|
||
|
|
USBD_LL_PrepareReceive (pdev,
|
||
|
|
MSC_EPOUT_ADDR,
|
||
|
|
hmsc->bot_data,
|
||
|
|
MIN (hmsc->scsi_blk_len, MSC_MEDIA_PACKET));
|
||
|
|
}
|
||
|
|
else /* Write Process ongoing */
|
||
|
|
{
|
||
|
|
return SCSI_ProcessWrite(pdev, lun);
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief SCSI_Verify10
|
||
|
|
* Process Verify10 command
|
||
|
|
* @param lun: Logical unit number
|
||
|
|
* @param params: Command parameters
|
||
|
|
* @retval status
|
||
|
|
*/
|
||
|
|
|
||
|
|
static int8_t SCSI_Verify10(USBD_HandleTypeDef *pdev, uint8_t lun , uint8_t *params)
|
||
|
|
{
|
||
|
|
USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
|
||
|
|
|
||
|
|
if ((params[1]& 0x02) == 0x02)
|
||
|
|
{
|
||
|
|
SCSI_SenseCode (pdev,
|
||
|
|
lun,
|
||
|
|
ILLEGAL_REQUEST,
|
||
|
|
INVALID_FIELED_IN_COMMAND);
|
||
|
|
return -1; /* Error, Verify Mode Not supported*/
|
||
|
|
}
|
||
|
|
|
||
|
|
if(SCSI_CheckAddressRange(pdev,
|
||
|
|
lun,
|
||
|
|
hmsc->scsi_blk_addr,
|
||
|
|
hmsc->scsi_blk_len) < 0)
|
||
|
|
{
|
||
|
|
return -1; /* error */
|
||
|
|
}
|
||
|
|
hmsc->bot_data_length = 0;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief SCSI_CheckAddressRange
|
||
|
|
* Check address range
|
||
|
|
* @param lun: Logical unit number
|
||
|
|
* @param blk_offset: first block address
|
||
|
|
* @param blk_nbr: number of block to be processed
|
||
|
|
* @retval status
|
||
|
|
*/
|
||
|
|
static int8_t SCSI_CheckAddressRange (USBD_HandleTypeDef *pdev, uint8_t lun , uint32_t blk_offset , uint16_t blk_nbr)
|
||
|
|
{
|
||
|
|
USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
|
||
|
|
|
||
|
|
if ((blk_offset + blk_nbr) > hmsc->scsi_blk_nbr )
|
||
|
|
{
|
||
|
|
SCSI_SenseCode(pdev,
|
||
|
|
lun,
|
||
|
|
ILLEGAL_REQUEST,
|
||
|
|
ADDRESS_OUT_OF_RANGE);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief SCSI_ProcessRead
|
||
|
|
* Handle Read Process
|
||
|
|
* @param lun: Logical unit number
|
||
|
|
* @retval status
|
||
|
|
*/
|
||
|
|
static int8_t SCSI_ProcessRead (USBD_HandleTypeDef *pdev, uint8_t lun)
|
||
|
|
{
|
||
|
|
USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
|
||
|
|
uint32_t len;
|
||
|
|
|
||
|
|
len = MIN(hmsc->scsi_blk_len , MSC_MEDIA_PACKET);
|
||
|
|
|
||
|
|
if( ((USBD_StorageTypeDef *)pdev->pUserData)->Read(lun ,
|
||
|
|
hmsc->bot_data,
|
||
|
|
hmsc->scsi_blk_addr / hmsc->scsi_blk_size,
|
||
|
|
len / hmsc->scsi_blk_size) < 0)
|
||
|
|
{
|
||
|
|
|
||
|
|
SCSI_SenseCode(pdev,
|
||
|
|
lun,
|
||
|
|
HARDWARE_ERROR,
|
||
|
|
UNRECOVERED_READ_ERROR);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
USBD_LL_Transmit (pdev,
|
||
|
|
MSC_EPIN_ADDR,
|
||
|
|
hmsc->bot_data,
|
||
|
|
len);
|
||
|
|
|
||
|
|
|
||
|
|
hmsc->scsi_blk_addr += len;
|
||
|
|
hmsc->scsi_blk_len -= len;
|
||
|
|
|
||
|
|
/* case 6 : Hi = Di */
|
||
|
|
hmsc->csw.dDataResidue -= len;
|
||
|
|
|
||
|
|
if (hmsc->scsi_blk_len == 0)
|
||
|
|
{
|
||
|
|
hmsc->bot_state = USBD_BOT_LAST_DATA_IN;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief SCSI_ProcessWrite
|
||
|
|
* Handle Write Process
|
||
|
|
* @param lun: Logical unit number
|
||
|
|
* @retval status
|
||
|
|
*/
|
||
|
|
|
||
|
|
static int8_t SCSI_ProcessWrite (USBD_HandleTypeDef *pdev, uint8_t lun)
|
||
|
|
{
|
||
|
|
uint32_t len;
|
||
|
|
USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
|
||
|
|
|
||
|
|
len = MIN(hmsc->scsi_blk_len , MSC_MEDIA_PACKET);
|
||
|
|
|
||
|
|
if(((USBD_StorageTypeDef *)pdev->pUserData)->Write(lun ,
|
||
|
|
hmsc->bot_data,
|
||
|
|
hmsc->scsi_blk_addr / hmsc->scsi_blk_size,
|
||
|
|
len / hmsc->scsi_blk_size) < 0)
|
||
|
|
{
|
||
|
|
SCSI_SenseCode(pdev,
|
||
|
|
lun,
|
||
|
|
HARDWARE_ERROR,
|
||
|
|
WRITE_FAULT);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
hmsc->scsi_blk_addr += len;
|
||
|
|
hmsc->scsi_blk_len -= len;
|
||
|
|
|
||
|
|
/* case 12 : Ho = Do */
|
||
|
|
hmsc->csw.dDataResidue -= len;
|
||
|
|
|
||
|
|
if (hmsc->scsi_blk_len == 0)
|
||
|
|
{
|
||
|
|
MSC_BOT_SendCSW (pdev, USBD_CSW_CMD_PASSED);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* Prapare EP to Receive next packet */
|
||
|
|
USBD_LL_PrepareReceive (pdev,
|
||
|
|
MSC_EPOUT_ADDR,
|
||
|
|
hmsc->bot_data,
|
||
|
|
MIN (hmsc->scsi_blk_len, MSC_MEDIA_PACKET));
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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