/*****************************************************************************
 *
 * \file
 *
 * \brief CTRL_ACCESS interface for the AT45DBX data flash controller.
 *
 * Copyright (c) 2009 Atmel Corporation. All rights reserved.
 *
 * \asf_license_start
 *
 * \page License
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 3. The name of Atmel may not be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * 4. This software may only be redistributed and used in connection with an
 *    Atmel microcontroller product.
 *
 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
 *
 * \asf_license_stop
 *
 ******************************************************************************/


#ifndef _AT45DBX_MEM_H_
#define _AT45DBX_MEM_H_


#include "conf_access.h"

#if AT45DBX_MEM == DISABLE
  #error at45dbx_mem.h is #included although AT45DBX_MEM is disabled
#endif


#include "ctrl_access.h"


//_____ D E C L A R A T I O N S ____________________________________________

/*! \name Control Interface
 */
//! @{

/*! \brief Tests the memory state and initializes the memory if required.
 *
 * The TEST UNIT READY SCSI primary command allows an application client to poll
 * a LUN until it is ready without having to allocate memory for returned data.
 *
 * This command may be used to check the media status of LUNs with removable
 * media.
 *
 * \return Status.
 */
extern Ctrl_status at45dbx_test_unit_ready(void);

/*! \brief Returns the address of the last valid sector in the memory.
 *
 * \param u32_nb_sector Pointer to the address of the last valid sector.
 *
 * \return Status.
 */
extern Ctrl_status at45dbx_read_capacity(U32 *u32_nb_sector);

/*! \brief Returns the write-protection state of the memory.
 *
 * \return \c true if the memory is write-protected, else \c false.
 *
 * \note Only used by removable memories with hardware-specific write
 *       protection.
 */
extern bool at45dbx_wr_protect(void);

/*! \brief Tells whether the memory is removable.
 *
 * \return \c true if the memory is removable, else \c false.
 */
extern bool at45dbx_removal(void);

//! @}


#if ACCESS_USB == true

/*! \name MEM <-> USB Interface
 */
//! @{

/*! \brief Transfers data from the memory to USB.
 *
 * \param addr      Address of first memory sector to read.
 * \param nb_sector Number of sectors to transfer.
 *
 * \return Status.
 */
extern Ctrl_status at45dbx_usb_read_10(U32 addr, U16 nb_sector);

/*! \brief Transfers data from USB to the memory.
 *
 * \param addr      Address of first memory sector to write.
 * \param nb_sector Number of sectors to transfer.
 *
 * \return Status.
 */
extern Ctrl_status at45dbx_usb_write_10(U32 addr, U16 nb_sector);

//! @}

#endif


#if ACCESS_MEM_TO_RAM == true

/*! \name MEM <-> RAM Interface
 */
//! @{

/*! \brief Copies 1 data sector from the memory to RAM.
 *
 * \param addr  Address of first memory sector to read.
 * \param ram   Pointer to RAM buffer to write.
 *
 * \return Status.
 */
extern Ctrl_status at45dbx_df_2_ram(U32 addr, void *ram);

/*! \brief Copies 1 data sector from RAM to the memory.
 *
 * \param addr  Address of first memory sector to write.
 * \param ram   Pointer to RAM buffer to read.
 *
 * \return Status.
 */
extern Ctrl_status at45dbx_ram_2_df(U32 addr, const void *ram);

//! @}

#endif


#endif  // _AT45DBX_MEM_H_
