#ifndef _USB_CDC_MSC_CORE_H_
#define _USB_CDC_MSC_CORE_H_

#include  "usbd_msc_bot.h"
#include  "usbd_msc_scsi.h"
#include  "usbd_ioreq.h"

// CDC and MSC packet sizes
#define CDC_DATA_FS_MAX_PACKET_SIZE (64) // endpoint IN & OUT packet size
#define MSC_MEDIA_PACKET            (2048) // was 8192; how low can it go whilst still working?

// Need to define here for BOT and SCSI layers
#define MSC_IN_EP     (0x81)
#define MSC_OUT_EP    (0x01)

// Need to define here for usbd_cdc_interface.c (it needs CDC_IN_EP)
#define CDC_IN_EP     (0x83)
#define CDC_OUT_EP    (0x03)
#define CDC_CMD_EP    (0x82)

// only CDC_MSC and CDC_HID are available
#define USBD_MODE_CDC (0x01)
#define USBD_MODE_MSC (0x02)
#define USBD_MODE_HID (0x04)
#define USBD_MODE_CDC_MSC (USBD_MODE_CDC | USBD_MODE_MSC)
#define USBD_MODE_CDC_HID (USBD_MODE_CDC | USBD_MODE_HID)
#define USBD_MODE_MSC_HID (USBD_MODE_MSC | USBD_MODE_HID)

typedef struct {
  uint32_t bitrate;
  uint8_t  format;
  uint8_t  paritytype;
  uint8_t  datatype;
} USBD_CDC_LineCodingTypeDef;

typedef struct _USBD_CDC_Itf {
  int8_t (* Init)          (void);
  int8_t (* DeInit)        (void);
  int8_t (* Control)       (uint8_t, uint8_t * , uint16_t);   
  int8_t (* Receive)       (uint8_t *, uint32_t *);  
} USBD_CDC_ItfTypeDef;

typedef struct {
  uint32_t data[CDC_DATA_FS_MAX_PACKET_SIZE/4];      /* Force 32bits alignment */
  uint8_t  CmdOpCode;
  uint8_t  CmdLength;    
  uint8_t  *RxBuffer;  
  uint8_t  *TxBuffer;   
  uint32_t RxLength;
  uint32_t TxLength;    
  
  __IO uint32_t TxState;     
  __IO uint32_t RxState;    
} USBD_CDC_HandleTypeDef;

typedef struct _USBD_STORAGE {
  int8_t (* Init) (uint8_t lun);
  int8_t (* GetCapacity) (uint8_t lun, uint32_t *block_num, uint16_t *block_size);
  int8_t (* IsReady) (uint8_t lun);
  int8_t (* IsWriteProtected) (uint8_t lun);
  int8_t (* StopUnit)(uint8_t lun);
  int8_t (* PreventAllowMediumRemoval)(uint8_t lun, uint8_t param0);
  int8_t (* Read) (uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len);
  int8_t (* Write)(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len);
  int8_t (* GetMaxLun)(void);
  int8_t *pInquiry;
} USBD_StorageTypeDef;

typedef struct {
  uint32_t                 max_lun;   
  uint32_t                 interface; 
  uint8_t                  bot_state;
  uint8_t                  bot_status;  
  uint16_t                 bot_data_length;
  uint8_t                  bot_data[MSC_MEDIA_PACKET];  
  USBD_MSC_BOT_CBWTypeDef  cbw;
  USBD_MSC_BOT_CSWTypeDef  csw;
  
  USBD_SCSI_SenseTypeDef   scsi_sense [SENSE_LIST_DEEPTH];
  uint8_t                  scsi_sense_head;
  uint8_t                  scsi_sense_tail;
  
  uint16_t                 scsi_blk_size;
  uint32_t                 scsi_blk_nbr;
  
  uint32_t                 scsi_blk_addr;
  uint32_t                 scsi_blk_len;
} USBD_MSC_BOT_HandleTypeDef;

extern USBD_ClassTypeDef USBD_CDC_MSC_HID;

void USBD_SelectMode(uint32_t mode);

uint8_t USBD_CDC_RegisterInterface  (USBD_HandleTypeDef   *pdev, USBD_CDC_ItfTypeDef *fops);
uint8_t USBD_CDC_SetTxBuffer  (USBD_HandleTypeDef   *pdev, uint8_t  *pbuff, uint16_t length);
uint8_t USBD_CDC_SetRxBuffer        (USBD_HandleTypeDef   *pdev, uint8_t  *pbuff);
uint8_t USBD_CDC_ReceivePacket  (USBD_HandleTypeDef *pdev);
uint8_t USBD_CDC_TransmitPacket  (USBD_HandleTypeDef *pdev);

uint8_t USBD_MSC_RegisterStorage(USBD_HandleTypeDef *pdev, USBD_StorageTypeDef *fops);

uint8_t USBD_HID_SendReport(USBD_HandleTypeDef *pdev, uint8_t *report, uint16_t len);

#endif // _USB_CDC_MSC_CORE_H_
