ra8_usb_pmsc_internal.h

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#pragma once
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <stdint.h>
 
#include "ra8_attributes.h"
#include "ra8_err.h"
#include "ra8_usb.h"
#include "ra8_usb_pmsc.h"

typedef enum : uint8_t {
  k_ra8_pmsc_state_idle       = 0U, 
  k_ra8_pmsc_state_cbw_rx     = 1U, 
  k_ra8_pmsc_state_cdb_decode = 2U, 
  k_ra8_pmsc_state_data_tx    = 3U, 
  k_ra8_pmsc_state_data_rx    = 4U, 
  k_ra8_pmsc_state_csw_tx     = 5U, 
} ra8_usb_pmsc_state_t;

typedef enum : uint16_t {
  k_ra8_pmsc_cbw_len     = 31U, 
  k_ra8_pmsc_csw_len     = 13U, 
  k_ra8_pmsc_cdb_max_len = 16U, 
} ra8_usb_pmsc_size_t;

typedef enum : uint8_t {
  k_ra8_pmsc_shift_byte0 = 0U,  
  k_ra8_pmsc_shift_byte1 = 8U,  
  k_ra8_pmsc_shift_byte2 = 16U, 
  k_ra8_pmsc_shift_byte3 = 24U, 
} ra8_usb_pmsc_byte_shift_t;

typedef enum : uint32_t {
  k_ra8_pmsc_byte_mask = 0xFFU, 
} ra8_usb_pmsc_byte_mask_t;

typedef enum : uint8_t {
  k_ra8_pmsc_cdb_off_opcode = 0U, 
} ra8_usb_pmsc_cdb_opcode_offset_t;

typedef struct {
  bool                   initialized;                     
  bool                   storage_attached;                
  ra8_usb_speed_t        speed;                           
  ra8_usb_pmsc_state_t   bot_state;                       
  ra8_usb_pmsc_storage_t storage;                         
  uint32_t               cbw_tag;                         
  uint32_t               cbw_data_length;                 
  bool                   cbw_dir_in;                      
  uint8_t                cbw_lun;                         
  uint8_t                cbw_cdb[k_ra8_pmsc_cdb_max_len]; 
  uint8_t                cbw_cdb_len;                     
  uint32_t               last_data_len;                   
} ra8_usb_pmsc_state_data_t;

extern ra8_usb_pmsc_state_data_t g_usb_pmsc_state;

RA8_PRIV void priv_zero_bytes(uint8_t* dst, uint32_t len);

RA8_PRIV ra8_err_t priv_handle_inquiry(uint8_t* data_buf, uint32_t capacity, uint32_t* out_len);

RA8_PRIV ra8_err_t priv_handle_read_capacity(uint8_t*  data_buf,
                                             uint32_t  capacity,
                                             uint32_t* out_len);

RA8_PRIV ra8_err_t priv_handle_request_sense(uint8_t*  data_buf,
                                             uint32_t  capacity,
                                             uint32_t* out_len);

RA8_PRIV ra8_err_t priv_handle_mode_sense(uint8_t* data_buf, uint32_t capacity, uint32_t* out_len);

RA8_PRIV ra8_err_t priv_handle_read10(uint8_t* data_buf, uint32_t capacity, uint32_t* out_len);

RA8_PRIV ra8_err_t priv_handle_write10(const uint8_t* data_buf, uint32_t* out_len);
 
#ifdef __cplusplus
}
#endif