Disconnect on SCSI eject command from host

Upstream/Middlewares/ST/STM32_USB_Device_Library/Class/MSC/Inc/usbd_msc_scsi.h

@@ -117,6 +117,10 @@
 #define STANDARD_INQUIRY_DATA_LEN                   0x24
 #define BLKVFY                                      0x04
 
+#define START_STOP_DATA_MASK                        0x03
+#define START_STOP_DATA_EJECT_STOP_MOTOR            0x02
+
+
 extern  uint8_t Page00_Inquiry_Data[];
 extern  uint8_t Standard_Inquiry_Data[];
 extern  uint8_t Standard_Inquiry_Data2[];

Upstream/Middlewares/ST/STM32_USB_Device_Library/Class/MSC/Src/usbd_msc_scsi.c

@@ -101,6 +101,7 @@ static void SCSI_ReadFormatCapacity(void);
 static void SCSI_ReadCapacity10(void);
 static void SCSI_RequestSense (void);
 static void SCSI_StartStopUnit(void);
+static void SCSI_AllowMediumRemoval(void);
 static void SCSI_ModeSense6 (void);
 static void SCSI_ModeSense10 (void);
 static void SCSI_Write10(void);
@@ -171,7 +172,7 @@ void SCSI_ProcessCmd(USBD_HandleTypeDef  *pdev,
     return;
     
   case SCSI_ALLOW_MEDIUM_REMOVAL:
-    SCSI_StartStopUnit();
+      SCSI_AllowMediumRemoval();
     return;
     
   case SCSI_MODE_SENSE6:
@@ -546,10 +547,23 @@ void SCSI_SenseCode(USBD_HandleTypeDef  *pdev, uint8_t lun, uint8_t sKey, uint8_
 */
 static void SCSI_StartStopUnit(void)
 {
+    if ((SCSI_ProcessCmd_params[4] & START_STOP_DATA_MASK) == START_STOP_DATA_EJECT_STOP_MOTOR)
+    {
+        USBD_RequestStop(SCSI_ProcessCmd_pdev);               //Host is signalling us to disconnect
+    }
+
   SCSI_ProcessCmd_hmsc->bot_data_length = 0;
   SCSI_ProcessCmd_callback(0);
 }
 
+
+static void SCSI_AllowMediumRemoval(void)
+{
+  SCSI_ProcessCmd_hmsc->bot_data_length = 0;
+  SCSI_ProcessCmd_callback(0);
+}
+
+
 /**
 * @brief  SCSI_Read10
 *         Process Read10 command

Upstream/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_core.h

@@ -92,6 +92,7 @@ USBD_StatusTypeDef USBD_Init(USBD_HandleTypeDef *pdev, USBD_DescriptorsTypeDef *
 USBD_ClassTypeDef* USBD_DeInit(USBD_HandleTypeDef *pdev);
 USBD_StatusTypeDef USBD_Start  (USBD_HandleTypeDef *pdev);
 USBD_StatusTypeDef USBD_Stop   (USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_RequestStop(USBD_HandleTypeDef *pdev);
 USBD_StatusTypeDef USBD_RegisterClass(USBD_HandleTypeDef *pdev, USBD_ClassTypeDef *pclass);
 
 USBD_StatusTypeDef USBD_RunTestMode (USBD_HandleTypeDef  *pdev); 

Upstream/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_def.h

@@ -222,10 +222,18 @@ typedef struct
   uint32_t                maxpacket;   
 } USBD_EndpointTypeDef;
 
+
+typedef enum
+{
+    USB_STATUS_STOP,
+    USB_STATUS_START,
+    USB_STATUS_REQUEST_EJECT
+} UsbCoreStatusTypeDef;
+
+
 /* USB Device handle structure */
 typedef struct _USBD_HandleTypeDef
 {
-  uint8_t                 id;
   uint32_t                dev_config;
   uint32_t                dev_default_config;
   uint32_t                dev_config_status;
@@ -234,6 +242,9 @@ typedef struct _USBD_HandleTypeDef
   USBD_EndpointTypeDef    ep_out[15];  
   uint32_t                ep0_state;  
   uint32_t                ep0_data_len;
+  uint32_t                usbRequestEjectTime;
+  uint8_t                 id;
+  uint8_t                 usbCoreStatus;
   uint8_t                 dev_state;
   uint8_t                 dev_old_state;
   uint8_t                 dev_address;

Upstream/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.c

@@ -121,6 +121,8 @@ USBD_StatusTypeDef USBD_Init(USBD_HandleTypeDef *pdev, USBD_DescriptorsTypeDef *
   /* Initialize low level driver */
   USBD_LL_Init(pdev);
   
+  pdev->usbCoreStatus = USB_STATUS_STOP;
+
   return USBD_OK; 
 }
 
@@ -184,10 +186,11 @@ USBD_StatusTypeDef  USBD_RegisterClass(USBD_HandleTypeDef *pdev, USBD_ClassTypeD
   */
 USBD_StatusTypeDef  USBD_Start  (USBD_HandleTypeDef *pdev)
 {
-  
   /* Start the low level driver  */
   USBD_LL_Start(pdev); 
   
+  pdev->usbCoreStatus = USB_STATUS_START;
+
   return USBD_OK;  
 }
 
@@ -205,9 +208,23 @@ USBD_StatusTypeDef  USBD_Stop   (USBD_HandleTypeDef *pdev)
   /* Stop the low level driver  */
   USBD_LL_Stop(pdev); 
   
+  pdev->usbCoreStatus = USB_STATUS_STOP;
+
+  return USBD_OK;  
+}
+
+
+USBD_StatusTypeDef USBD_RequestStop(USBD_HandleTypeDef *pdev)
+{
+    if (pdev->usbCoreStatus == USB_STATUS_START)
+    {
+        pdev->usbCoreStatus = USB_STATUS_REQUEST_EJECT;
+        pdev->usbRequestEjectTime = HAL_GetTick() + 5;          //Allow > 1ms to transmit the SCSI eject reply before disconnecting
+    }
     return USBD_OK;
 }
 
+
 /**
 * @brief  USBD_RunTestMode 
 *         Launch test mode process
@@ -216,6 +233,8 @@ USBD_StatusTypeDef  USBD_Stop   (USBD_HandleTypeDef *pdev)
 */
 USBD_StatusTypeDef  USBD_RunTestMode (USBD_HandleTypeDef  *pdev) 
 {
+  UNUSED(pdev);
+
   return USBD_OK;
 }
 
@@ -500,6 +519,14 @@ USBD_StatusTypeDef USBD_SOF(USBD_HandleTypeDef  *pdev)
       pdev->pClass->SOF(pdev);
     }
   }
+
+  if (pdev->usbCoreStatus == USB_STATUS_REQUEST_EJECT)
+  {
+      if ((int32_t)(HAL_GetTick() - pdev->usbRequestEjectTime) >= 0)
+      {
+          USBD_Stop(pdev);
+      }
+  }
   return USBD_OK;
 }
 
@@ -511,6 +538,8 @@ USBD_StatusTypeDef USBD_SOF(USBD_HandleTypeDef  *pdev)
 */
 USBD_StatusTypeDef USBD_IsoINIncomplete(USBD_HandleTypeDef  *pdev, uint8_t epnum)
 {
+  UNUSED(pdev);
+
   return USBD_OK;
 }
 
@@ -522,6 +551,8 @@ USBD_StatusTypeDef USBD_IsoINIncomplete(USBD_HandleTypeDef  *pdev, uint8_t epnum
 */
 USBD_StatusTypeDef USBD_IsoOUTIncomplete(USBD_HandleTypeDef  *pdev, uint8_t epnum)
 {
+  UNUSED(pdev);
+
   return USBD_OK;
 }
 
@@ -533,6 +564,8 @@ USBD_StatusTypeDef USBD_IsoOUTIncomplete(USBD_HandleTypeDef  *pdev, uint8_t epnu
 */
 USBD_StatusTypeDef USBD_DevConnected(USBD_HandleTypeDef  *pdev)
 {
+  UNUSED(pdev);
+
   return USBD_OK;
 }
 

Upstream/Src/usbd_config.c

@@ -292,7 +292,7 @@ USBD_StatusTypeDef  USBD_LL_Init (USBD_HandleTypeDef *pdev)
   hpcd_USB_OTG_FS.Init.dma_enable = DISABLE;
   hpcd_USB_OTG_FS.Init.ep0_mps = DEP0CTL_MPS_64;
   hpcd_USB_OTG_FS.Init.phy_itface = PCD_PHY_EMBEDDED;
-  hpcd_USB_OTG_FS.Init.Sof_enable = DISABLE;
+  hpcd_USB_OTG_FS.Init.Sof_enable = ENABLE;
   hpcd_USB_OTG_FS.Init.low_power_enable = DISABLE;
   hpcd_USB_OTG_FS.Init.vbus_sensing_enable = DISABLE;
   hpcd_USB_OTG_FS.Init.use_dedicated_ep1 = DISABLE;