--- /dev/null
+/**
+ ******************************************************************************
+ * @file usbd_msc_bot.c
+ * @author MCD Application Team
+ * @version V1.0.0
+ * @date 22-July-2011
+ * @brief This file provides all the BOT protocol core functions.
+ ******************************************************************************
+ * @attention
+ *
+ * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+ * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+ * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
+ * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+ * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+ * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+ *
+ * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_msc_bot.h"
+#include "usbd_msc_scsi.h"
+#include "usbd_ioreq.h"
+#include "usbd_msc_mem.h"
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+ * @{
+ */
+
+
+/** @defgroup MSC_BOT
+ * @brief BOT protocol module
+ * @{
+ */
+
+/** @defgroup MSC_BOT_Private_TypesDefinitions
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup MSC_BOT_Private_Defines
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+
+/** @defgroup MSC_BOT_Private_Macros
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup MSC_BOT_Private_Variables
+ * @{
+ */
+uint16_t MSC_BOT_DataLen;
+uint8_t MSC_BOT_State;
+uint8_t MSC_BOT_Status;
+
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+ #if defined ( __ICCARM__ ) /*!< IAR Compiler */
+ #pragma data_alignment=4
+ #endif
+#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+__ALIGN_BEGIN uint8_t MSC_BOT_Data[MSC_MEDIA_PACKET] __ALIGN_END ;
+
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+ #if defined ( __ICCARM__ ) /*!< IAR Compiler */
+ #pragma data_alignment=4
+ #endif
+#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+__ALIGN_BEGIN MSC_BOT_CBW_TypeDef MSC_BOT_cbw __ALIGN_END ;
+
+#ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED
+ #if defined ( __ICCARM__ ) /*!< IAR Compiler */
+ #pragma data_alignment=4
+ #endif
+#endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */
+__ALIGN_BEGIN MSC_BOT_CSW_TypeDef MSC_BOT_csw __ALIGN_END ;
+/**
+ * @}
+ */
+
+
+/** @defgroup MSC_BOT_Private_FunctionPrototypes
+ * @{
+ */
+static void MSC_BOT_CBW_Decode (USB_OTG_CORE_HANDLE *pdev);
+
+static void MSC_BOT_SendData (USB_OTG_CORE_HANDLE *pdev,
+ uint8_t* pbuf,
+ uint16_t len);
+
+static void MSC_BOT_Abort(USB_OTG_CORE_HANDLE *pdev);
+/**
+ * @}
+ */
+
+
+/** @defgroup MSC_BOT_Private_Functions
+ * @{
+ */
+
+
+
+/**
+* @brief MSC_BOT_Init
+* Initialize the BOT Process
+* @param pdev: device instance
+* @retval None
+*/
+void MSC_BOT_Init (USB_OTG_CORE_HANDLE *pdev)
+{
+ MSC_BOT_State = BOT_IDLE;
+ MSC_BOT_Status = BOT_STATE_NORMAL;
+ USBD_STORAGE_fops->Init(0);
+
+ DCD_EP_Flush(pdev, MSC_OUT_EP);
+ DCD_EP_Flush(pdev, MSC_IN_EP);
+ /* Prapare EP to Receive First BOT Cmd */
+ DCD_EP_PrepareRx (pdev,
+ MSC_OUT_EP,
+ (uint8_t *)&MSC_BOT_cbw,
+ BOT_CBW_LENGTH);
+}
+
+/**
+* @brief MSC_BOT_Reset
+* Reset the BOT Machine
+* @param pdev: device instance
+* @retval None
+*/
+void MSC_BOT_Reset (USB_OTG_CORE_HANDLE *pdev)
+{
+ MSC_BOT_State = BOT_IDLE;
+ MSC_BOT_Status = BOT_STATE_RECOVERY;
+ /* Prapare EP to Receive First BOT Cmd */
+ DCD_EP_PrepareRx (pdev,
+ MSC_OUT_EP,
+ (uint8_t *)&MSC_BOT_cbw,
+ BOT_CBW_LENGTH);
+}
+
+/**
+* @brief MSC_BOT_DeInit
+* Uninitialize the BOT Machine
+* @param pdev: device instance
+* @retval None
+*/
+void MSC_BOT_DeInit (USB_OTG_CORE_HANDLE *pdev)
+{
+ MSC_BOT_State = BOT_IDLE;
+}
+
+/**
+* @brief MSC_BOT_DataIn
+* Handle BOT IN data stage
+* @param pdev: device instance
+* @param epnum: endpoint index
+* @retval None
+*/
+void MSC_BOT_DataIn (USB_OTG_CORE_HANDLE *pdev,
+ uint8_t epnum)
+{
+
+ switch (MSC_BOT_State)
+ {
+ case BOT_DATA_IN:
+ if(SCSI_ProcessCmd(pdev,
+ MSC_BOT_cbw.bLUN,
+ &MSC_BOT_cbw.CB[0]) < 0)
+ {
+ MSC_BOT_SendCSW (pdev, CSW_CMD_FAILED);
+ }
+ break;
+
+ case BOT_SEND_DATA:
+ case BOT_LAST_DATA_IN:
+ MSC_BOT_SendCSW (pdev, CSW_CMD_PASSED);
+
+ break;
+
+ default:
+ break;
+ }
+}
+/**
+* @brief MSC_BOT_DataOut
+* Proccess MSC OUT data
+* @param pdev: device instance
+* @param epnum: endpoint index
+* @retval None
+*/
+void MSC_BOT_DataOut (USB_OTG_CORE_HANDLE *pdev,
+ uint8_t epnum)
+{
+ switch (MSC_BOT_State)
+ {
+ case BOT_IDLE:
+ MSC_BOT_CBW_Decode(pdev);
+ break;
+
+ case BOT_DATA_OUT:
+
+ if(SCSI_ProcessCmd(pdev,
+ MSC_BOT_cbw.bLUN,
+ &MSC_BOT_cbw.CB[0]) < 0)
+ {
+ MSC_BOT_SendCSW (pdev, CSW_CMD_FAILED);
+ }
+
+ break;
+
+ default:
+ break;
+ }
+
+}
+
+/**
+* @brief MSC_BOT_CBW_Decode
+* Decode the CBW command and set the BOT state machine accordingtly
+* @param pdev: device instance
+* @retval None
+*/
+static void MSC_BOT_CBW_Decode (USB_OTG_CORE_HANDLE *pdev)
+{
+
+ MSC_BOT_csw.dTag = MSC_BOT_cbw.dTag;
+ MSC_BOT_csw.dDataResidue = MSC_BOT_cbw.dDataLength;
+
+ if ((USBD_GetRxCount (pdev ,MSC_OUT_EP) != BOT_CBW_LENGTH) ||
+ (MSC_BOT_cbw.dSignature != BOT_CBW_SIGNATURE)||
+ (MSC_BOT_cbw.bLUN > 1) ||
+ (MSC_BOT_cbw.bCBLength < 1) ||
+ (MSC_BOT_cbw.bCBLength > 16))
+ {
+
+ SCSI_SenseCode(MSC_BOT_cbw.bLUN,
+ ILLEGAL_REQUEST,
+ INVALID_CDB);
+ MSC_BOT_Status = BOT_STATE_ERROR;
+ MSC_BOT_Abort(pdev);
+
+ }
+ else
+ {
+ if(SCSI_ProcessCmd(pdev,
+ MSC_BOT_cbw.bLUN,
+ &MSC_BOT_cbw.CB[0]) < 0)
+ {
+ MSC_BOT_Abort(pdev);
+ }
+ /*Burst xfer handled internally*/
+ else if ((MSC_BOT_State != BOT_DATA_IN) &&
+ (MSC_BOT_State != BOT_DATA_OUT) &&
+ (MSC_BOT_State != BOT_LAST_DATA_IN))
+ {
+ if (MSC_BOT_DataLen > 0)
+ {
+ MSC_BOT_SendData(pdev,
+ MSC_BOT_Data,
+ MSC_BOT_DataLen);
+ }
+ else if (MSC_BOT_DataLen == 0)
+ {
+ MSC_BOT_SendCSW (pdev,
+ CSW_CMD_PASSED);
+ }
+ }
+ }
+}
+
+/**
+* @brief MSC_BOT_SendData
+* Send the requested data
+* @param pdev: device instance
+* @param buf: pointer to data buffer
+* @param len: Data Length
+* @retval None
+*/
+static void MSC_BOT_SendData(USB_OTG_CORE_HANDLE *pdev,
+ uint8_t* buf,
+ uint16_t len)
+{
+
+ len = MIN (MSC_BOT_cbw.dDataLength, len);
+ MSC_BOT_csw.dDataResidue -= len;
+ MSC_BOT_csw.bStatus = CSW_CMD_PASSED;
+ MSC_BOT_State = BOT_SEND_DATA;
+
+ DCD_EP_Tx (pdev, MSC_IN_EP, buf, len);
+}
+
+/**
+* @brief MSC_BOT_SendCSW
+* Send the Command Status Wrapper
+* @param pdev: device instance
+* @param status : CSW status
+* @retval None
+*/
+void MSC_BOT_SendCSW (USB_OTG_CORE_HANDLE *pdev,
+ uint8_t CSW_Status)
+{
+ MSC_BOT_csw.dSignature = BOT_CSW_SIGNATURE;
+ MSC_BOT_csw.bStatus = CSW_Status;
+ MSC_BOT_State = BOT_IDLE;
+
+ DCD_EP_Tx (pdev,
+ MSC_IN_EP,
+ (uint8_t *)&MSC_BOT_csw,
+ BOT_CSW_LENGTH);
+
+ /* Prapare EP to Receive next Cmd */
+ DCD_EP_PrepareRx (pdev,
+ MSC_OUT_EP,
+ (uint8_t *)&MSC_BOT_cbw,
+ BOT_CBW_LENGTH);
+
+}
+
+/**
+* @brief MSC_BOT_Abort
+* Abort the current transfer
+* @param pdev: device instance
+* @retval status
+*/
+
+static void MSC_BOT_Abort (USB_OTG_CORE_HANDLE *pdev)
+{
+
+ if ((MSC_BOT_cbw.bmFlags == 0) &&
+ (MSC_BOT_cbw.dDataLength != 0) &&
+ (MSC_BOT_Status == BOT_STATE_NORMAL) )
+ {
+ DCD_EP_Stall(pdev, MSC_OUT_EP );
+ }
+ DCD_EP_Stall(pdev, MSC_IN_EP);
+
+ if(MSC_BOT_Status == BOT_STATE_ERROR)
+ {
+ DCD_EP_PrepareRx (pdev,
+ MSC_OUT_EP,
+ (uint8_t *)&MSC_BOT_cbw,
+ BOT_CBW_LENGTH);
+ }
+}
+
+/**
+* @brief MSC_BOT_CplClrFeature
+* Complete the clear feature request
+* @param pdev: device instance
+* @param epnum: endpoint index
+* @retval None
+*/
+
+void MSC_BOT_CplClrFeature (USB_OTG_CORE_HANDLE *pdev, uint8_t epnum)
+{
+ if(MSC_BOT_Status == BOT_STATE_ERROR )/* Bad CBW Signature */
+ {
+ DCD_EP_Stall(pdev, MSC_IN_EP);
+ MSC_BOT_Status = BOT_STATE_NORMAL;
+ }
+ else if(((epnum & 0x80) == 0x80) && ( MSC_BOT_Status != BOT_STATE_RECOVERY))
+ {
+ MSC_BOT_SendCSW (pdev, CSW_CMD_FAILED);
+ }
+
+}
+/**
+ * @}
+ */
+
+
+/**
+ * @}
+ */
+
+
+/**
+ * @}
+ */
+
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
projects / fw / stlink / blobdiff