ctrl_access.c

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/* This file has been prepared for Doxygen automatic documentation generation.*/
/*! \file ctrl_access.c *********************************************************************
 *
 * \brief
 *      This file contains the interface :
 *         - between USB <-> MEMORY
 *      OR
 *         - between USB <- Access Memory Ctrl -> Memory
 *
 *      This interface may be controled by a "Access Memory Control" for :
 *         - include a management of write protect global or specific
 *         - include a management of access password
 *
 * \addtogroup usbstick
 *
 * \author
 *      Atmel Corporation: http://www.atmel.com \n
 *      Support email: [e-mail]
 ******************************************************************************/
/* 
   Copyright (c) 2004  ATMEL Corporation
   All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are met:

   * Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer.
   * Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in
     the documentation and/or other materials provided with the
     distribution.
   * Neither the name of the copyright holders nor the names of
     contributors may be used to endorse or promote products derived
     from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  POSSIBILITY OF SUCH DAMAGE.
*/

/**
 \addtogroup usbstorage
 @{
*/


//_____ I N C L U D E S ____________________________________________________

#include "config.h"
#include "storage/ctrl_access.h"


//_____ D E F I N I T I O N S ______________________________________________

#if (ACCESS_MEM_TO_MEM == ENABLED)
   #include "modules/file_system/fat.h"
   U8 buf_sector[FS_SIZE_OF_SECTOR];
#endif


//! Computed the maximum of static lun (don't add the lun of Mass Storage in mode USB Host)
// FYC: Memory = Logical Unit



               // CHECK FOR LUN DEFINE
#ifndef  LUN_0
   #  error LUN_0 must be defined with ENABLE or DISABLE in conf_access.h
#endif
#ifndef  LUN_1
   #  error LUN_1 must be defined with ENABLE or DISABLE in conf_access.h
#endif
#ifndef  LUN_2
   #  error LUN_2 must be defined with ENABLE or DISABLE in conf_access.h
#endif
#ifndef  LUN_3
   #  error LUN_3 must be defined with ENABLE or DISABLE in conf_access.h
#endif
#ifndef  LUN_4
   #  error LUN_4 must be defined with ENABLE or DISABLE in conf_access.h
#endif
#ifndef  LUN_5
   #  error LUN_5 must be defined with ENABLE or DISABLE in conf_access.h
#endif
#ifndef  LUN_6
   #  error LUN_6 must be defined with ENABLE or DISABLE in conf_access.h
#endif
#ifndef  LUN_7
   #  error LUN_7 must be defined with ENABLE or DISABLE in conf_access.h
#endif
#ifndef  LUN_USB
   #  error LUN_USB must be defined with ENABLE or DISABLE in conf_access.h
#endif



#if (LUN_0 == ENABLE)
   #define     LUN_0_EN   1
   U8 FLASH  lun0_name[]=LUN_0_NAME;
   #else
   #define   LUN_0_EN   0
#endif
#if (LUN_1 == ENABLE)
   #define     LUN_1_EN   1
   U8 FLASH  lun1_name[]=LUN_1_NAME;
   #else
   #define     LUN_1_EN   0
#endif
#if (LUN_2 == ENABLE)
   #define     LUN_2_EN   1
   U8 FLASH  lun2_name[]=LUN_2_NAME;
   #else
   #define     LUN_2_EN   0
#endif
#if (LUN_3 == ENABLE)
   #define     LUN_3_EN   1
   U8 FLASH  lun3_name[]=LUN_3_NAME;
   #else
   #define     LUN_3_EN   0
#endif
#if (LUN_4 == ENABLE)
   #define     LUN_4_EN   1
   U8 FLASH  lun4_name[]=LUN_4_NAME;
   #else
   #define     LUN_4_EN   0
#endif
#if (LUN_5 == ENABLE)
   #define     LUN_5_EN   1
   U8 FLASH  lun5_name[]=LUN_5_NAME;
   #else
   #define     LUN_5_EN   0
#endif
#if (LUN_6 == ENABLE)
   #define     LUN_6_EN   1
   U8 FLASH  lun6_name[]=LUN_6_NAME;
   #else
   #define     LUN_6_EN   0
#endif
#if (LUN_7 == ENABLE)
   #define     LUN_7_EN   1
   U8 FLASH  lun7_name[]=LUN_7_NAME;
   #else
   #define     LUN_7_EN   0
#endif
#if (LUN_USB == ENABLE)
   #define     LUN_USB_EN   1
   U8 FLASH  lunusb_name[]=LUN_USB_NAME;
   #else
   #define     LUN_USB_EN   0
#endif


#define  LUN_ID_0        (0)
#define  LUN_ID_1        (LUN_0_EN)
#define  LUN_ID_2        (LUN_0_EN+LUN_1_EN)
#define  LUN_ID_3        (LUN_0_EN+LUN_1_EN+LUN_2_EN)
#define  LUN_ID_4        (LUN_0_EN+LUN_1_EN+LUN_2_EN+LUN_3_EN)
#define  LUN_ID_5        (LUN_0_EN+LUN_1_EN+LUN_2_EN+LUN_3_EN+LUN_4_EN)
#define  LUN_ID_6        (LUN_0_EN+LUN_1_EN+LUN_2_EN+LUN_3_EN+LUN_4_EN+LUN_5_EN)
#define  LUN_ID_7        (LUN_0_EN+LUN_1_EN+LUN_2_EN+LUN_3_EN+LUN_4_EN+LUN_5_EN+LUN_6_EN)
#define  MAX_LUN         (LUN_0_EN+LUN_1_EN+LUN_2_EN+LUN_3_EN+LUN_4_EN+LUN_5_EN+LUN_6_EN+LUN_7_EN)
#define  LUN_ID_USB      (MAX_LUN)

// Check configuration
#if (MAX_LUN == 0)
   #error No memory is active in conf_access.h
#endif

// Write protect variable
#if (GLOBAL_WR_PROTECT == ENABLED)
   static U8 g_u8_wr_protect;
#endif


//_____ D E F I N I T I O N S __ F O N C T I O N S _________________________


//! This fonction return the number of logical unit
//!
//! @return U8   number of logical unit in the system
//!
U8    get_nb_lun()
{
#if   (MEM_USB == ENABLED)
   return   (MAX_LUN + Host_getlun());
#else
   return   MAX_LUN;
#endif
}


//! This fonction return the current logical unit
//!
//! @return U8   number of logical unit in the system
//!
U8    get_cur_lun()
{
   return   0; //TODO
}


//! This fonction test the state of memory, and start the initialisation of the memory
//!
//! MORE (see SPC-3