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/*****************************************************************************
*
*  nvmem.c  - CC3000 Host Driver Implementation.
*  Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
*
*  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 Texas Instruments Incorporated nor the names of
*    its 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 nvmem_api
//! @{
//
//*****************************************************************************

#include <stdio.h>
#include <string.h>
#include "nvmem.h"
#include "hci.h"
#include "socket.h"
#include "evnt_handler.h"

//*****************************************************************************
//
// Prototypes for the structures for APIs.
//
//*****************************************************************************

#define NVMEM_READ_PARAMS_LEN     (12)
#define NVMEM_CREATE_PARAMS_LEN     (8)
#define NVMEM_WRITE_PARAMS_LEN  (16)

//*****************************************************************************
//
//!  nvmem_read
//!
//!  @param  ulFileId   nvmem file id:\n
//!                     NVMEM_NVS_FILEID, NVMEM_NVS_SHADOW_FILEID,
//!                     NVMEM_WLAN_CONFIG_FILEID, NVMEM_WLAN_CONFIG_SHADOW_FILEID,
//!                     NVMEM_WLAN_DRIVER_SP_FILEID, NVMEM_WLAN_FW_SP_FILEID,
//!                     NVMEM_MAC_FILEID, NVMEM_FRONTEND_VARS_FILEID,
//!                     NVMEM_IP_CONFIG_FILEID, NVMEM_IP_CONFIG_SHADOW_FILEID,
//!                     NVMEM_BOOTLOADER_SP_FILEID, NVMEM_RM_FILEID,
//!                     and user files 12-15.
//!  @param  ulLength    number of bytes to read 
//!  @param  ulOffset    ulOffset in file from where to read  
//!  @param  buff        output buffer pointer
//!
//!  @return       number of bytes read, otherwise error.
//!
//!  @brief       Reads data from the file referred by the ulFileId parameter. 
//!               Reads data from file ulOffset till length. Err if the file can't
//!               be used, is invalid, or if the read is out of bounds. 
//!     
//*****************************************************************************

signed long 
nvmem_read(unsigned long ulFileId, unsigned long ulLength, unsigned long ulOffset, unsigned char *buff)
{
    unsigned char ucStatus = 0xFF;
    unsigned char *ptr;
    unsigned char *args;
    
    ptr = tSLInformation.pucTxCommandBuffer;
    args = (ptr + HEADERS_SIZE_CMD);
    
    // Fill in HCI packet structure
    args = UINT32_TO_STREAM(args, ulFileId);
    args = UINT32_TO_STREAM(args, ulLength);
    args = UINT32_TO_STREAM(args, ulOffset);
    
    // Initiate a HCI command
    hci_command_send(HCI_CMND_NVMEM_READ, ptr, NVMEM_READ_PARAMS_LEN);
    SimpleLinkWaitEvent(HCI_CMND_NVMEM_READ, (long*)&ucStatus);
    
    // In case there is data - read it - even if an error code is returned
   // Note: It is the user responsibility to ignore the data in case of an error code
    
    // Wait for the data in a synchronous way. Here we assume that the buffer is 
    // big enough to store also parameters of nvmem
    
    SimpleLinkWaitData(buff, 0, 0);
    
    return(ucStatus);
}

//*****************************************************************************
//
//!  nvmem_write
//!
//!  @param  ulFileId nvmem file id:\n
//!                   NVMEM_WLAN_DRIVER_SP_FILEID, NVMEM_WLAN_FW_SP_FILEID,
//!                   NVMEM_MAC_FILEID, NVMEM_BOOTLOADER_SP_FILEID,
//!                   and user files 12-15.
//!  @param  ulLength       number of bytes to write  
//!  @param  ulEntryOffset  offset in file to start write operation from 
//!  @param  buff           data to write
//!
//!  @return       on success 0, error otherwise.
//!
//!  @brief       Write data to nvmem.
//!               writes data to file referred by the ulFileId parameter. 
//!               Writes data to file ulOffset till ulLength.The file id will be 
//!               marked invalid till the write is done. The file entry doesn't
//!               need to be valid - only allocated.
//!     
//*****************************************************************************

signed long 
nvmem_write(unsigned long ulFileId, unsigned long ulLength, unsigned long 
                        ulEntryOffset, unsigned char *buff)
{
    long iRes;
    unsigned char *ptr;
    unsigned char *args;
    
    iRes = EFAIL;
    
    ptr = tSLInformation.pucTxCommandBuffer;
    args = (ptr + SPI_HEADER_SIZE + HCI_DATA_CMD_HEADER_SIZE);
    
    // Fill in HCI packet structure
    args = UINT32_TO_STREAM(args, ulFileId);
    args = UINT32_TO_STREAM(args, 12);
    args = UINT32_TO_STREAM(args, ulLength);
    args = UINT32_TO_STREAM(args, ulEntryOffset);
    
    memcpy((ptr + SPI_HEADER_SIZE + HCI_DATA_CMD_HEADER_SIZE + NVMEM_WRITE_PARAMS_LEN),buff,ulLength);
    
    // Initiate a HCI command but it will come on data channel
    hci_data_command_send(HCI_CMND_NVMEM_WRITE, ptr, NVMEM_WRITE_PARAMS_LEN, ulLength);
    
    SimpleLinkWaitEvent(HCI_EVNT_NVMEM_WRITE, &iRes);
    
    return(iRes);
}


//*****************************************************************************
//
//!  nvmem_set_mac_address
//!
//!  @param  mac   mac address to be set
//!
//!  @return       on success 0, error otherwise.
//!
//!  @brief       Write MAC address to EEPROM. 
//!               mac address as appears over the air (OUI first)
//!     
//*****************************************************************************

unsigned char nvmem_set_mac_address(unsigned char *mac)
{
    return  nvmem_write(NVMEM_MAC_FILEID, MAC_ADDR_LEN, 0, mac);
}

//*****************************************************************************
//
//!  nvmem_get_mac_address
//!
//!  @param[out]  mac   mac address  
//!
//!  @return       on success 0, error otherwise.
//!
//!  @brief       Read MAC address from EEPROM. 
//!               mac address as appears over the air (OUI first)
//!     
//*****************************************************************************

unsigned char nvmem_get_mac_address(unsigned char *mac)
{
    return  nvmem_read(NVMEM_MAC_FILEID, MAC_ADDR_LEN, 0, mac);
}

//*****************************************************************************
//
//!  nvmem_write_patch
//!
//!  @param  ulFileId   nvmem file id:\n
//!                     NVMEM_WLAN_DRIVER_SP_FILEID, NVMEM_WLAN_FW_SP_FILEID,
//!  @param  spLength   number of bytes to write 
//!  @param  spData     SP data to write
//!
//!  @return       on success 0, error otherwise.
//!
//!  @brief      program a patch to a specific file ID. 
//!              The SP data is assumed to be organized in 2-dimensional.
//!              Each line is SP_PORTION_SIZE bytes long. Actual programming is 
//!              applied in SP_PORTION_SIZE bytes portions.
//!     
//*****************************************************************************

unsigned char nvmem_write_patch(unsigned long ulFileId, unsigned long spLength, const unsigned char *spData)
{
    unsigned char     status = 0;
    unsigned short    offset = 0;
    unsigned char*      spDataPtr = (unsigned char*)spData;
    
    while ((status == 0) && (spLength >= SP_PORTION_SIZE))
    {
        status = nvmem_write(ulFileId, SP_PORTION_SIZE, offset, spDataPtr);
        offset += SP_PORTION_SIZE;
        spLength -= SP_PORTION_SIZE;
        spDataPtr += SP_PORTION_SIZE;
    }
    
    if (status !=0)
    {
        // NVMEM error occurred
        return status;
    }
    
    if (spLength != 0)
    {
        // if reached here, a reminder is left
        status = nvmem_write(ulFileId, spLength, offset, spDataPtr);
    }
    
    return status;
}

//*****************************************************************************
//
//!  nvmem_read_sp_version
//!
//!  @param[out]  patchVer    first number indicates package ID and the second 
//!                           number indicates package build number   
//!
//!  @return       on success  0, error otherwise.
//!
//!  @brief      Read patch version. read package version (WiFi FW patch, 
//!              driver-supplicant-NS patch, bootloader patch)
//!     
//*****************************************************************************

#ifndef CC3000_TINY_DRIVER
unsigned char nvmem_read_sp_version(unsigned char* patchVer)
{
    unsigned char *ptr;
    // 1st byte is the status and the rest is the SP version
    unsigned char    retBuf[5];    
    
    ptr = tSLInformation.pucTxCommandBuffer;
  
   // Initiate a HCI command, no args are required
    hci_command_send(HCI_CMND_READ_SP_VERSION, ptr, 0);    
    SimpleLinkWaitEvent(HCI_CMND_READ_SP_VERSION, (long*)retBuf);
    
    // package ID
    *patchVer = retBuf[3];            
    // package build number
    *(patchVer+1) = retBuf[4];        
    
    return(retBuf[0]);
}
#endif

//*****************************************************************************
//
//!  nvmem_create_entry
//!
//!  @param       ulFileId    nvmem file Id:\n
//!                           * NVMEM_AES128_KEY_FILEID: 12
//!                           * NVMEM_SHARED_MEM_FILEID: 13
//!                           * and fileIDs 14 and 15
//!  @param       ulNewLen    entry ulLength  
//!
//!  @return       on success 0, error otherwise.
//!
//!  @brief      Create new file entry and allocate space on the NVMEM. 
//!              Applies only to user files.
//!              Modify the size of file.
//!              If the entry is unallocated - allocate it to size 
//!              ulNewLen (marked invalid).
//!              If it is allocated then deallocate it first.
//!              To just mark the file as invalid without resizing - 
//!              set ulNewLen=0.
//!     
//*****************************************************************************

signed long 
nvmem_create_entry(unsigned long ulFileId, unsigned long ulNewLen)
{
    unsigned char *ptr; 
    unsigned char *args;
    unsigned short retval;
    
    ptr = tSLInformation.pucTxCommandBuffer;
    args = (ptr + HEADERS_SIZE_CMD);
    
    // Fill in HCI packet structure
    args = UINT32_TO_STREAM(args, ulFileId);
    args = UINT32_TO_STREAM(args, ulNewLen);
    
    // Initiate a HCI command
    hci_command_send(HCI_CMND_NVMEM_CREATE_ENTRY,ptr, NVMEM_CREATE_PARAMS_LEN);
    
    SimpleLinkWaitEvent(HCI_CMND_NVMEM_CREATE_ENTRY, (long*)&retval);
    
    return(retval);
}



//*****************************************************************************
//
// Close the Doxygen group.
//! @}
//
//*****************************************************************************