diff options
| author | Dan Halbert <halbert@halwitz.org> | 2019-10-13 11:08:52 -0400 |
|---|---|---|
| committer | Dan Halbert <halbert@halwitz.org> | 2019-10-13 11:08:52 -0400 |
| commit | fc033bd954a46156d6902392f8ae21ac2872bb1c (patch) | |
| tree | d1dbfe4eb3cb5427a13af2df19a63b9718f20b4b /ports/stm32/usbdev/class/src/usbd_msc_scsi.c | |
| parent | 7bc02ad3baf81d9ee2d01c0c83a1e1fe939386b2 (diff) | |
remove ports/stm32
Diffstat (limited to 'ports/stm32/usbdev/class/src/usbd_msc_scsi.c')
| -rw-r--r-- | ports/stm32/usbdev/class/src/usbd_msc_scsi.c | 811 |
1 files changed, 0 insertions, 811 deletions
diff --git a/ports/stm32/usbdev/class/src/usbd_msc_scsi.c b/ports/stm32/usbdev/class/src/usbd_msc_scsi.c deleted file mode 100644 index 9da903377..000000000 --- a/ports/stm32/usbdev/class/src/usbd_msc_scsi.c +++ /dev/null @@ -1,811 +0,0 @@ -/** - ****************************************************************************** - * @file usbd_msc_scsi.c - * @author MCD Application Team - * @version V2.0.0 - * @date 18-February-2014 - * @brief This file provides all the USBD SCSI layer functions. - ****************************************************************************** - * @attention - * - * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2> - * - * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); - * You may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.st.com/software_license_agreement_liberty_v2 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - * - ****************************************************************************** - */ - -/* Includes ------------------------------------------------------------------*/ -#include "usbd_msc_bot.h" -#include "usbd_msc_scsi.h" -#include "usbd_msc_data.h" -#include "usbd_cdc_msc_hid.h" - - - -/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY - * @{ - */ - - -/** @defgroup MSC_SCSI - * @brief Mass storage SCSI layer module - * @{ - */ - -/** @defgroup MSC_SCSI_Private_TypesDefinitions - * @{ - */ -/** - * @} - */ - - -/** @defgroup MSC_SCSI_Private_Defines - * @{ - */ - -/** - * @} - */ - - -/** @defgroup MSC_SCSI_Private_Macros - * @{ - */ -/** - * @} - */ - - -/** @defgroup MSC_SCSI_Private_Variables - * @{ - */ - -/** - * @} - */ - - -/** @defgroup MSC_SCSI_Private_FunctionPrototypes - * @{ - */ -static int8_t SCSI_TestUnitReady(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params); -static int8_t SCSI_Inquiry(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params); -static int8_t SCSI_ReadFormatCapacity(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params); -static int8_t SCSI_ReadCapacity10(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params); -static int8_t SCSI_RequestSense (USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params); -static int8_t SCSI_StartStopUnit(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params); -static int8_t SCSI_AllowMediumRemoval(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params); -static int8_t SCSI_ModeSense6 (USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params); -static int8_t SCSI_ModeSense10 (USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params); -static int8_t SCSI_SynchronizeCache(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params); -static int8_t SCSI_Write10(USBD_HandleTypeDef *pdev, uint8_t lun , uint8_t *params); -static int8_t SCSI_Read10(USBD_HandleTypeDef *pdev, uint8_t lun , uint8_t *params); -static int8_t SCSI_Verify10(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params); -static int8_t SCSI_CheckAddressRange (USBD_HandleTypeDef *pdev, - uint8_t lun , - uint32_t blk_offset , - uint16_t blk_nbr); -static int8_t SCSI_ProcessRead (USBD_HandleTypeDef *pdev, - uint8_t lun); - -static int8_t SCSI_ProcessWrite (USBD_HandleTypeDef *pdev, - uint8_t lun); -/** - * @} - */ - - -/** @defgroup MSC_SCSI_Private_Functions - * @{ - */ - - -/** -* @brief SCSI_ProcessCmd -* Process SCSI commands -* @param pdev: device instance -* @param lun: Logical unit number -* @param params: Command parameters -* @retval status -*/ -int8_t SCSI_ProcessCmd(USBD_HandleTypeDef *pdev, - uint8_t lun, - uint8_t *params) -{ - /* - if (params[0] != SCSI_READ10 && params[0] != SCSI_WRITE10) { - printf("SCSI_ProcessCmd(lun=%d, params=%x, %x)\n", lun, params[0], params[1]); - } - */ - - switch (params[0]) - { - case SCSI_TEST_UNIT_READY: - return SCSI_TestUnitReady(pdev, lun, params); - - case SCSI_REQUEST_SENSE: - return SCSI_RequestSense (pdev, lun, params); - case SCSI_INQUIRY: - return SCSI_Inquiry(pdev, lun, params); - - case SCSI_START_STOP_UNIT: - return SCSI_StartStopUnit(pdev, lun, params); - - case SCSI_ALLOW_MEDIUM_REMOVAL: - return SCSI_AllowMediumRemoval(pdev, lun, params); - - case SCSI_MODE_SENSE6: - return SCSI_ModeSense6 (pdev, lun, params); - - case SCSI_MODE_SENSE10: - return SCSI_ModeSense10 (pdev, lun, params); - - case SCSI_SYNCHRONIZE_CACHE10: - case SCSI_SYNCHRONIZE_CACHE16: - return SCSI_SynchronizeCache(pdev, lun, params); - - case SCSI_READ_FORMAT_CAPACITIES: - return SCSI_ReadFormatCapacity(pdev, lun, params); - - case SCSI_READ_CAPACITY10: - return SCSI_ReadCapacity10(pdev, lun, params); - - case SCSI_READ10: - return SCSI_Read10(pdev, lun, params); - - case SCSI_WRITE10: - return SCSI_Write10(pdev, lun, params); - - case SCSI_VERIFY10: - return SCSI_Verify10(pdev, lun, params); - - default: - SCSI_SenseCode(pdev, - lun, - ILLEGAL_REQUEST, - INVALID_CDB); - return -1; - } -} - - -/** -* @brief SCSI_TestUnitReady -* Process SCSI Test Unit Ready Command -* @param lun: Logical unit number -* @param params: Command parameters -* @retval status -*/ -static int8_t SCSI_TestUnitReady(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params) -{ - USBD_MSC_BOT_HandleTypeDef *hmsc = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - - /* case 9 : Hi > D0 */ - if (hmsc->cbw.dDataLength != 0) - { - SCSI_SenseCode(pdev, - hmsc->cbw.bLUN, - ILLEGAL_REQUEST, - INVALID_CDB); - return -1; - } - - if(hmsc->bdev_ops->IsReady(lun) !=0 ) - { - SCSI_SenseCode(pdev, - lun, - NOT_READY, - MEDIUM_NOT_PRESENT); - - hmsc->bot_state = USBD_BOT_NO_DATA; - return -1; - } - hmsc->bot_data_length = 0; - return 0; -} - -/** -* @brief SCSI_Inquiry -* Process Inquiry command -* @param lun: Logical unit number -* @param params: Command parameters -* @retval status -*/ -static int8_t SCSI_Inquiry(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params) -{ - uint8_t* pPage; - uint16_t len; - USBD_MSC_BOT_HandleTypeDef *hmsc = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - - if (params[1] & 0x01)/*Evpd is set*/ - { - pPage = (uint8_t *)MSC_Page00_Inquiry_Data; - len = LENGTH_INQUIRY_PAGE00; - } - else - { - - pPage = (uint8_t *)&hmsc->bdev_ops->pInquiry[lun * STANDARD_INQUIRY_DATA_LEN]; - len = pPage[4] + 5; - - if (params[4] <= len) - { - len = params[4]; - } - } - hmsc->bot_data_length = len; - - while (len) - { - len--; - hmsc->bot_data[len] = pPage[len]; - } - return 0; -} - -/** -* @brief SCSI_ReadCapacity10 -* Process Read Capacity 10 command -* @param lun: Logical unit number -* @param params: Command parameters -* @retval status -*/ -static int8_t SCSI_ReadCapacity10(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params) -{ - USBD_MSC_BOT_HandleTypeDef *hmsc = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - - if(hmsc->bdev_ops->GetCapacity(lun, &hmsc->scsi_blk_nbr, &hmsc->scsi_blk_size) != 0) - { - SCSI_SenseCode(pdev, - lun, - NOT_READY, - MEDIUM_NOT_PRESENT); - return -1; - } - else - { - - hmsc->bot_data[0] = (uint8_t)((hmsc->scsi_blk_nbr - 1) >> 24); - hmsc->bot_data[1] = (uint8_t)((hmsc->scsi_blk_nbr - 1) >> 16); - hmsc->bot_data[2] = (uint8_t)((hmsc->scsi_blk_nbr - 1) >> 8); - hmsc->bot_data[3] = (uint8_t)(hmsc->scsi_blk_nbr - 1); - - hmsc->bot_data[4] = (uint8_t)(hmsc->scsi_blk_size >> 24); - hmsc->bot_data[5] = (uint8_t)(hmsc->scsi_blk_size >> 16); - hmsc->bot_data[6] = (uint8_t)(hmsc->scsi_blk_size >> 8); - hmsc->bot_data[7] = (uint8_t)(hmsc->scsi_blk_size); - - hmsc->bot_data_length = 8; - return 0; - } -} -/** -* @brief SCSI_ReadFormatCapacity -* Process Read Format Capacity command -* @param lun: Logical unit number -* @param params: Command parameters -* @retval status -*/ -static int8_t SCSI_ReadFormatCapacity(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params) -{ - USBD_MSC_BOT_HandleTypeDef *hmsc = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - - uint16_t blk_size; - uint32_t blk_nbr; - uint16_t i; - - for(i=0 ; i < 12 ; i++) - { - hmsc->bot_data[i] = 0; - } - - if(hmsc->bdev_ops->GetCapacity(lun, &blk_nbr, &blk_size) != 0) - { - SCSI_SenseCode(pdev, - lun, - NOT_READY, - MEDIUM_NOT_PRESENT); - return -1; - } - else - { - hmsc->bot_data[3] = 0x08; - hmsc->bot_data[4] = (uint8_t)((blk_nbr - 1) >> 24); - hmsc->bot_data[5] = (uint8_t)((blk_nbr - 1) >> 16); - hmsc->bot_data[6] = (uint8_t)((blk_nbr - 1) >> 8); - hmsc->bot_data[7] = (uint8_t)(blk_nbr - 1); - - hmsc->bot_data[8] = 0x02; - hmsc->bot_data[9] = (uint8_t)(blk_size >> 16); - hmsc->bot_data[10] = (uint8_t)(blk_size >> 8); - hmsc->bot_data[11] = (uint8_t)(blk_size); - - hmsc->bot_data_length = 12; - return 0; - } -} -/** -* @brief SCSI_ModeSense6 -* Process Mode Sense6 command -* @param lun: Logical unit number -* @param params: Command parameters -* @retval status -*/ -static int8_t SCSI_ModeSense6 (USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params) -{ - USBD_MSC_BOT_HandleTypeDef *hmsc = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - uint16_t len = 8 ; - hmsc->bot_data_length = len; - - while (len) - { - len--; - hmsc->bot_data[len] = MSC_Mode_Sense6_data[len]; - } - return 0; -} - -/** -* @brief SCSI_ModeSense10 -* Process Mode Sense10 command -* @param lun: Logical unit number -* @param params: Command parameters -* @retval status -*/ -static int8_t SCSI_ModeSense10 (USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params) -{ - uint16_t len = 8; - USBD_MSC_BOT_HandleTypeDef *hmsc = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - - hmsc->bot_data_length = len; - - while (len) - { - len--; - hmsc->bot_data[len] = MSC_Mode_Sense10_data[len]; - } - return 0; -} - -static int8_t SCSI_SynchronizeCache(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params) { - // nothing to synchronize, so just return "success" - USBD_MSC_BOT_HandleTypeDef *hmsc = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - hmsc->bot_data_length = 0; - return 0; -} - -/** -* @brief SCSI_RequestSense -* Process Request Sense command -* @param lun: Logical unit number -* @param params: Command parameters -* @retval status -*/ - -static int8_t SCSI_RequestSense (USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params) -{ - uint8_t i; - USBD_MSC_BOT_HandleTypeDef *hmsc = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - - 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 = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - - 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 = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - hmsc->bot_data_length = 0; - - // On Mac OS X, when the device is ejected a SCSI_START_STOP_UNIT command is sent. - // Bit 0 of params[4] is the START bit. - // If we get a stop, we must really stop the device so that the Mac does not - // automatically remount it. - hmsc->bdev_ops->StartStopUnit(lun, params[4] & 1); - - return 0; -} - -/** -* @brief SCSI_AllowMediumRemoval -* Process Allow Medium Removal command -* @param lun: Logical unit number -* @param params: Command parameters -* @retval status -*/ -static int8_t SCSI_AllowMediumRemoval(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params) -{ - USBD_MSC_BOT_HandleTypeDef *hmsc = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - hmsc->bot_data_length = 0; - hmsc->bdev_ops->PreventAllowMediumRemoval(lun, params[4]); - 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 = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - - 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(hmsc->bdev_ops->IsReady(lun) !=0 ) - { - SCSI_SenseCode(pdev, - lun, - NOT_READY, - MEDIUM_NOT_PRESENT); - return -1; - } - - hmsc->scsi_blk_addr_in_blks = (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_in_blks, hmsc->scsi_blk_len) < 0) - { - return -1; /* error */ - } - - hmsc->bot_state = USBD_BOT_DATA_IN; - 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 = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - - 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(hmsc->bdev_ops->IsReady(lun) !=0 ) - { - SCSI_SenseCode(pdev, - lun, - NOT_READY, - MEDIUM_NOT_PRESENT); - return -1; - } - - /* Check If media is write-protected */ - if(hmsc->bdev_ops->IsWriteProtected(lun) !=0 ) - { - SCSI_SenseCode(pdev, - lun, - NOT_READY, - WRITE_PROTECTED); - return -1; - } - - - hmsc->scsi_blk_addr_in_blks = (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_in_blks, - hmsc->scsi_blk_len) < 0) - { - return -1; /* error */ - } - - 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_OUT_EP, - 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 = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - - if ((params[1]& 0x02) == 0x02) - { - SCSI_SenseCode (pdev, - lun, - ILLEGAL_REQUEST, - INVALID_FIELED_IN_COMMAND); - return -1; /* Error, Verify Mode Not supported*/ - } - - hmsc->scsi_blk_addr_in_blks = (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_in_blks, - 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 = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - - 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 = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - uint32_t len; - - len = MIN(hmsc->scsi_blk_len , MSC_MEDIA_PACKET); - - if( hmsc->bdev_ops->Read(lun , - hmsc->bot_data, - hmsc->scsi_blk_addr_in_blks, - len / hmsc->scsi_blk_size) < 0) - { - - SCSI_SenseCode(pdev, - lun, - HARDWARE_ERROR, - UNRECOVERED_READ_ERROR); - return -1; - } - - - USBD_LL_Transmit (pdev, - MSC_IN_EP, - hmsc->bot_data, - len); - - - hmsc->scsi_blk_addr_in_blks += len / hmsc->scsi_blk_size; - 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 = &((usbd_cdc_msc_hid_state_t*)pdev->pClassData)->MSC_BOT_ClassData; - - len = MIN(hmsc->scsi_blk_len , MSC_MEDIA_PACKET); - - if(hmsc->bdev_ops->Write(lun , - hmsc->bot_data, - hmsc->scsi_blk_addr_in_blks, - len / hmsc->scsi_blk_size) < 0) - { - SCSI_SenseCode(pdev, - lun, - HARDWARE_ERROR, - WRITE_FAULT); - return -1; - } - - - hmsc->scsi_blk_addr_in_blks += len / hmsc->scsi_blk_size; - 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_OUT_EP, - hmsc->bot_data, - MIN (hmsc->scsi_blk_len, MSC_MEDIA_PACKET)); - } - - return 0; -} -/** - * @} - */ - - -/** - * @} - */ - - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
