730 lines
17 KiB
C
730 lines
17 KiB
C
/**
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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 V1.1.0
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* @date 19-March-2012
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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 2012 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_mem.h"
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#include "usbd_msc_data.h"
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#include "usbd_conf.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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SCSI_Sense_TypeDef SCSI_Sense [SENSE_LIST_DEEPTH];
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uint8_t SCSI_Sense_Head;
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uint8_t SCSI_Sense_Tail;
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uint32_t SCSI_blk_size;
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uint32_t SCSI_blk_nbr;
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uint32_t SCSI_blk_addr;
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uint32_t SCSI_blk_len;
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USB_OTG_CORE_HANDLE *cdev;
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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(uint8_t lun, uint8_t *params);
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static int8_t SCSI_Inquiry(uint8_t lun, uint8_t *params);
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static int8_t SCSI_ReadFormatCapacity(uint8_t lun, uint8_t *params);
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static int8_t SCSI_ReadCapacity10(uint8_t lun, uint8_t *params);
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static int8_t SCSI_RequestSense (uint8_t lun, uint8_t *params);
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static int8_t SCSI_StartStopUnit(uint8_t lun, uint8_t *params);
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static int8_t SCSI_ModeSense6 (uint8_t lun, uint8_t *params);
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static int8_t SCSI_ModeSense10 (uint8_t lun, uint8_t *params);
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static int8_t SCSI_Write10(uint8_t lun , uint8_t *params);
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static int8_t SCSI_Read10(uint8_t lun , uint8_t *params);
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static int8_t SCSI_Verify10(uint8_t lun, uint8_t *params);
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static int8_t SCSI_CheckAddressRange (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 (uint8_t lun);
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static int8_t SCSI_ProcessWrite (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(USB_OTG_CORE_HANDLE *pdev,
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uint8_t lun,
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uint8_t *params)
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{
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cdev = pdev;
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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(lun, params);
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case SCSI_REQUEST_SENSE:
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return SCSI_RequestSense (lun, params);
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case SCSI_INQUIRY:
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return SCSI_Inquiry(lun, params);
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case SCSI_START_STOP_UNIT:
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return SCSI_StartStopUnit(lun, params);
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case SCSI_ALLOW_MEDIUM_REMOVAL:
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return SCSI_StartStopUnit(lun, params);
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case SCSI_MODE_SENSE6:
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return SCSI_ModeSense6 (lun, params);
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case SCSI_MODE_SENSE10:
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return SCSI_ModeSense10 (lun, params);
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case SCSI_READ_FORMAT_CAPACITIES:
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return SCSI_ReadFormatCapacity(lun, params);
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case SCSI_READ_CAPACITY10:
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return SCSI_ReadCapacity10(lun, params);
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case SCSI_READ10:
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return SCSI_Read10(lun, params);
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case SCSI_WRITE10:
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return SCSI_Write10(lun, params);
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case SCSI_VERIFY10:
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return SCSI_Verify10(lun, params);
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default:
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SCSI_SenseCode(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(uint8_t lun, uint8_t *params)
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{
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/* case 9 : Hi > D0 */
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if (MSC_BOT_cbw.dDataLength != 0)
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{
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SCSI_SenseCode(MSC_BOT_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_STORAGE_fops->IsReady(lun) !=0 )
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{
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SCSI_SenseCode(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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MSC_BOT_DataLen = 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(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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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_STORAGE_fops->pInquiry[lun * USBD_STD_INQUIRY_LENGTH];
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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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MSC_BOT_DataLen = len;
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while (len)
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{
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len--;
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MSC_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(uint8_t lun, uint8_t *params)
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{
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if(USBD_STORAGE_fops->GetCapacity(lun, &SCSI_blk_nbr, &SCSI_blk_size) != 0)
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{
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SCSI_SenseCode(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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MSC_BOT_Data[0] = (uint8_t)((SCSI_blk_nbr - 1) >> 24); // dpgeorge added paren
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MSC_BOT_Data[1] = (uint8_t)((SCSI_blk_nbr - 1) >> 16); // dpgeorge added paren
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MSC_BOT_Data[2] = (uint8_t)((SCSI_blk_nbr - 1) >> 8); // dpgeorge added paren
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MSC_BOT_Data[3] = (uint8_t)(SCSI_blk_nbr - 1);
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MSC_BOT_Data[4] = (uint8_t)(SCSI_blk_size >> 24);
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MSC_BOT_Data[5] = (uint8_t)(SCSI_blk_size >> 16);
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MSC_BOT_Data[6] = (uint8_t)(SCSI_blk_size >> 8);
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MSC_BOT_Data[7] = (uint8_t)(SCSI_blk_size);
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MSC_BOT_DataLen = 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(uint8_t lun, uint8_t *params)
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{
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uint32_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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MSC_BOT_Data[i] = 0;
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}
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if(USBD_STORAGE_fops->GetCapacity(lun, &blk_nbr, &blk_size) != 0)
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{
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SCSI_SenseCode(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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MSC_BOT_Data[3] = 0x08;
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MSC_BOT_Data[4] = (uint8_t)((blk_nbr - 1) >> 24); // dpgeorge added paren
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MSC_BOT_Data[5] = (uint8_t)((blk_nbr - 1) >> 16); // dpgeorge added paren
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MSC_BOT_Data[6] = (uint8_t)((blk_nbr - 1) >> 8); // dpgeorge added paren
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MSC_BOT_Data[7] = (uint8_t)(blk_nbr - 1);
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MSC_BOT_Data[8] = 0x02;
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MSC_BOT_Data[9] = (uint8_t)(blk_size >> 16);
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MSC_BOT_Data[10] = (uint8_t)(blk_size >> 8);
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MSC_BOT_Data[11] = (uint8_t)(blk_size);
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MSC_BOT_DataLen = 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 (uint8_t lun, uint8_t *params)
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{
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uint16_t len = 8 ;
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MSC_BOT_DataLen = len;
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while (len)
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{
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len--;
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MSC_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 (uint8_t lun, uint8_t *params)
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{
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uint16_t len = 8;
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MSC_BOT_DataLen = len;
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while (len)
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{
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len--;
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MSC_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
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*/
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static int8_t SCSI_RequestSense (uint8_t lun, uint8_t *params)
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{
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uint8_t i;
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for(i=0 ; i < REQUEST_SENSE_DATA_LEN ; i++)
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{
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MSC_BOT_Data[i] = 0;
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}
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MSC_BOT_Data[0] = 0x70;
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MSC_BOT_Data[7] = REQUEST_SENSE_DATA_LEN - 6;
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if((SCSI_Sense_Head != SCSI_Sense_Tail)) {
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MSC_BOT_Data[2] = SCSI_Sense[SCSI_Sense_Head].Skey;
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MSC_BOT_Data[12] = SCSI_Sense[SCSI_Sense_Head].w.b.ASCQ;
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MSC_BOT_Data[13] = SCSI_Sense[SCSI_Sense_Head].w.b.ASC;
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SCSI_Sense_Head++;
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if (SCSI_Sense_Head == SENSE_LIST_DEEPTH)
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{
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SCSI_Sense_Head = 0;
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}
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}
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MSC_BOT_DataLen = REQUEST_SENSE_DATA_LEN;
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if (params[4] <= REQUEST_SENSE_DATA_LEN)
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{
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MSC_BOT_DataLen = params[4];
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}
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return 0;
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}
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/**
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* @brief SCSI_SenseCode
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* Load the last error code in the error list
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* @param lun: Logical unit number
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* @param sKey: Sense Key
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* @param ASC: Additional Sense Key
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* @retval none
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*/
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void SCSI_SenseCode(uint8_t lun, uint8_t sKey, uint8_t ASC)
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{
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SCSI_Sense[SCSI_Sense_Tail].Skey = sKey;
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SCSI_Sense[SCSI_Sense_Tail].w.ASC = ASC << 8;
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SCSI_Sense_Tail++;
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if (SCSI_Sense_Tail == SENSE_LIST_DEEPTH)
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{
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SCSI_Sense_Tail = 0;
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}
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}
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/**
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* @brief SCSI_StartStopUnit
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* Process Start Stop Unit 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_StartStopUnit(uint8_t lun, uint8_t *params)
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{
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MSC_BOT_DataLen = 0;
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return 0;
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}
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/**
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* @brief SCSI_Read10
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* Process Read10 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_Read10(uint8_t lun , uint8_t *params)
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{
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if(MSC_BOT_State == BOT_IDLE) /* Idle */
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{
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/* case 10 : Ho <> Di */
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if ((MSC_BOT_cbw.bmFlags & 0x80) != 0x80)
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{
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SCSI_SenseCode(MSC_BOT_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_STORAGE_fops->IsReady(lun) !=0 )
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{
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SCSI_SenseCode(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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SCSI_blk_addr = (params[2] << 24) | \
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(params[3] << 16) | \
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(params[4] << 8) | \
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params[5];
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SCSI_blk_len = (params[7] << 8) | \
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params[8];
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if( SCSI_CheckAddressRange(lun, SCSI_blk_addr, SCSI_blk_len) < 0)
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{
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return -1; /* error */
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}
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MSC_BOT_State = BOT_DATA_IN;
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SCSI_blk_addr *= SCSI_blk_size;
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SCSI_blk_len *= SCSI_blk_size;
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/* cases 4,5 : Hi <> Dn */
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if (MSC_BOT_cbw.dDataLength != SCSI_blk_len)
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{
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SCSI_SenseCode(MSC_BOT_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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}
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MSC_BOT_DataLen = MSC_MEDIA_PACKET;
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return SCSI_ProcessRead(lun);
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}
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/**
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* @brief SCSI_Write10
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* Process Write10 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_Write10 (uint8_t lun , uint8_t *params)
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{
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if (MSC_BOT_State == BOT_IDLE) /* Idle */
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{
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/* case 8 : Hi <> Do */
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if ((MSC_BOT_cbw.bmFlags & 0x80) == 0x80)
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{
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SCSI_SenseCode(MSC_BOT_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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/* Check whether Media is ready */
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if(USBD_STORAGE_fops->IsReady(lun) !=0 )
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{
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SCSI_SenseCode(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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/* Check If media is write-protected */
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if(USBD_STORAGE_fops->IsWriteProtected(lun) !=0 )
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{
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SCSI_SenseCode(lun,
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NOT_READY,
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WRITE_PROTECTED);
|
|
return -1;
|
|
}
|
|
|
|
|
|
SCSI_blk_addr = (params[2] << 24) | \
|
|
(params[3] << 16) | \
|
|
(params[4] << 8) | \
|
|
params[5];
|
|
SCSI_blk_len = (params[7] << 8) | \
|
|
params[8];
|
|
|
|
/* check if LBA address is in the right range */
|
|
if(SCSI_CheckAddressRange(lun, SCSI_blk_addr, SCSI_blk_len) < 0)
|
|
{
|
|
return -1; /* error */
|
|
}
|
|
|
|
SCSI_blk_addr *= SCSI_blk_size;
|
|
SCSI_blk_len *= SCSI_blk_size;
|
|
|
|
/* cases 3,11,13 : Hn,Ho <> D0 */
|
|
if (MSC_BOT_cbw.dDataLength != SCSI_blk_len)
|
|
{
|
|
SCSI_SenseCode(MSC_BOT_cbw.bLUN,
|
|
ILLEGAL_REQUEST,
|
|
INVALID_CDB);
|
|
return -1;
|
|
}
|
|
|
|
/* Prepare EP to receive first data packet */
|
|
MSC_BOT_State = BOT_DATA_OUT;
|
|
DCD_EP_PrepareRx (cdev,
|
|
MSC_OUT_EP,
|
|
MSC_BOT_Data,
|
|
MIN (SCSI_blk_len, MSC_MEDIA_PACKET));
|
|
}
|
|
else /* Write Process ongoing */
|
|
{
|
|
return SCSI_ProcessWrite(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(uint8_t lun , uint8_t *params){
|
|
if ((params[1]& 0x02) == 0x02)
|
|
{
|
|
SCSI_SenseCode (lun, ILLEGAL_REQUEST, INVALID_FIELED_IN_COMMAND);
|
|
return -1; /* Error, Verify Mode Not supported*/
|
|
}
|
|
|
|
if(SCSI_CheckAddressRange(lun, SCSI_blk_addr, SCSI_blk_len) < 0)
|
|
{
|
|
return -1; /* error */
|
|
}
|
|
MSC_BOT_DataLen = 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 (uint8_t lun , uint32_t blk_offset , uint16_t blk_nbr)
|
|
{
|
|
|
|
if ((blk_offset + blk_nbr) > SCSI_blk_nbr )
|
|
{
|
|
SCSI_SenseCode(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 (uint8_t lun)
|
|
{
|
|
uint32_t len;
|
|
|
|
len = MIN(SCSI_blk_len , MSC_MEDIA_PACKET);
|
|
|
|
if( USBD_STORAGE_fops->Read(lun ,
|
|
MSC_BOT_Data,
|
|
SCSI_blk_addr / SCSI_blk_size,
|
|
len / SCSI_blk_size) < 0)
|
|
{
|
|
|
|
SCSI_SenseCode(lun, HARDWARE_ERROR, UNRECOVERED_READ_ERROR);
|
|
return -1;
|
|
}
|
|
|
|
|
|
DCD_EP_Tx (cdev,
|
|
MSC_IN_EP,
|
|
MSC_BOT_Data,
|
|
len);
|
|
|
|
|
|
SCSI_blk_addr += len;
|
|
SCSI_blk_len -= len;
|
|
|
|
/* case 6 : Hi = Di */
|
|
MSC_BOT_csw.dDataResidue -= len;
|
|
|
|
if (SCSI_blk_len == 0)
|
|
{
|
|
MSC_BOT_State = BOT_LAST_DATA_IN;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* @brief SCSI_ProcessWrite
|
|
* Handle Write Process
|
|
* @param lun: Logical unit number
|
|
* @retval status
|
|
*/
|
|
|
|
static int8_t SCSI_ProcessWrite (uint8_t lun)
|
|
{
|
|
uint32_t len;
|
|
|
|
len = MIN(SCSI_blk_len , MSC_MEDIA_PACKET);
|
|
|
|
if(USBD_STORAGE_fops->Write(lun ,
|
|
MSC_BOT_Data,
|
|
SCSI_blk_addr / SCSI_blk_size,
|
|
len / SCSI_blk_size) < 0)
|
|
{
|
|
SCSI_SenseCode(lun, HARDWARE_ERROR, WRITE_FAULT);
|
|
return -1;
|
|
}
|
|
|
|
|
|
SCSI_blk_addr += len;
|
|
SCSI_blk_len -= len;
|
|
|
|
/* case 12 : Ho = Do */
|
|
MSC_BOT_csw.dDataResidue -= len;
|
|
|
|
if (SCSI_blk_len == 0)
|
|
{
|
|
MSC_BOT_SendCSW (cdev, CSW_CMD_PASSED);
|
|
}
|
|
else
|
|
{
|
|
/* Prapare EP to Receive next packet */
|
|
DCD_EP_PrepareRx (cdev,
|
|
MSC_OUT_EP,
|
|
MSC_BOT_Data,
|
|
MIN (SCSI_blk_len, MSC_MEDIA_PACKET));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|