File content as of revision 6:778b081f6a13:

/*
 * fs.c - CC31xx/CC32xx Host Driver Implementation
 *
 * Copyright (C) 2014 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.
 *
*/



/*****************************************************************************/
/* Include files                                                             */
/*****************************************************************************/
#include "cc3100_simplelink.h"
#include "cc3100_protocol.h"
#include "cc3100_driver.h"

#include "cc3100_fs.h"

/*****************************************************************************/
/* Macro declarations                                                        */
/*****************************************************************************/
#define sl_min(a,b) (((a) < (b)) ? (a) : (b))
#define MAX_NVMEM_CHUNK_SIZE  1460

namespace mbed_cc3100 {

cc3100_fs::cc3100_fs(cc3100_driver &driver)
    : _driver(driver)
{

}

cc3100_fs::~cc3100_fs()
{

}

#ifndef SL_TINY
/*****************************************************************************/
/* Internal functions                                                        */
/*****************************************************************************/


/*****************************************************************************/
/* _sl_Strlen                                                                */
/*****************************************************************************/
uint16_t cc3100_fs::_sl_Strlen(const uint8_t *buffer)
{
    uint16_t len = 0;
    if( buffer != NULL ) {
        while(*buffer++) len++;
    }
    return len;
}

/*****************************************************************************/
/* _sl_GetCreateFsMode                                                       */
/*****************************************************************************/
uint32_t cc3100_fs::_sl_GetCreateFsMode(uint32_t maxSizeInBytes,uint32_t accessFlags)
{
    uint32_t granIdx = 0;
    uint32_t granNum = 0;
    uint32_t granTable[_FS_MAX_MODE_SIZE_GRAN] = {256,1024,4096,16384,65536};
    for(granIdx= _FS_MODE_SIZE_GRAN_256B ; granIdx< _FS_MAX_MODE_SIZE_GRAN; granIdx++) {
        if( granTable[granIdx]*255 >= maxSizeInBytes )
            break;
    }
    granNum = maxSizeInBytes/granTable[granIdx];
    if( maxSizeInBytes % granTable[granIdx] != 0 )
        granNum++;

    return _FS_MODE(_FS_MODE_OPEN_WRITE_CREATE_IF_NOT_EXIST,  granIdx, granNum, accessFlags);
}
#endif

/*****************************************************************************/
/* API functions                                                        */
/*****************************************************************************/

/*****************************************************************************/
/*  sl_FsOpen */
/*****************************************************************************/
typedef union {
    _FsOpenCommand_t	    Cmd;
    _FsOpenResponse_t	    Rsp;
} _SlFsOpenMsg_u;

#if _SL_INCLUDE_FUNC(sl_FsOpen)
const _SlCmdCtrl_t _SlFsOpenCmdCtrl = {
    SL_OPCODE_NVMEM_FILEOPEN,
    sizeof(_FsOpenCommand_t),
    sizeof(_FsOpenResponse_t)
};

int32_t cc3100_fs::sl_FsOpen(const uint8_t *pFileName, const uint32_t AccessModeAndMaxSize, uint32_t *pToken,int32_t *pFileHandle)
{
    _SlReturnVal_t        RetVal;
    _SlFsOpenMsg_u        Msg;
    _SlCmdExt_t           CmdExt;

    CmdExt.TxPayloadLen = (_sl_Strlen(pFileName)+4) & (~3); // add 4: 1 for NULL and the 3 for align
    CmdExt.RxPayloadLen = 0;
    CmdExt.pTxPayload = (uint8_t *)pFileName;
    CmdExt.pRxPayload = NULL;

    Msg.Cmd.Mode          =  AccessModeAndMaxSize;

    if(pToken != NULL) {
        Msg.Cmd.Token         = *pToken;
    } else {
        Msg.Cmd.Token         = 0;
    }

    RetVal = _driver._SlDrvCmdOp((_SlCmdCtrl_t *)&_SlFsOpenCmdCtrl, &Msg, &CmdExt);
    *pFileHandle = Msg.Rsp.FileHandle;
    if (pToken != NULL) {
        *pToken =      Msg.Rsp.Token;
    }

    /* in case of an error, return the erros file handler as an error code */
    if( *pFileHandle < 0 ) {
        return *pFileHandle;
    }
    return (int32_t)RetVal;
}
#endif

/*****************************************************************************/
/* sl_FsClose */
/*****************************************************************************/
typedef union {
    _FsCloseCommand_t	    Cmd;
    _BasicResponse_t	    Rsp;
} _SlFsCloseMsg_u;

#if _SL_INCLUDE_FUNC(sl_FsClose)
const _SlCmdCtrl_t _SlFsCloseCmdCtrl = {
    SL_OPCODE_NVMEM_FILECLOSE,
    sizeof(_FsCloseCommand_t),
    sizeof(_FsCloseResponse_t)
};

int16_t cc3100_fs::sl_FsClose(const int32_t FileHdl, const uint8_t*  pCeritificateFileName, const uint8_t*  pSignature ,const uint32_t SignatureLen)
{
    _SlFsCloseMsg_u Msg = {0};
    _SlCmdExt_t         ExtCtrl;

    Msg.Cmd.FileHandle             = FileHdl;
    if( pCeritificateFileName != NULL ) {
        Msg.Cmd.CertificFileNameLength = (_sl_Strlen(pCeritificateFileName)+4) & (~3); /* add 4: 1 for NULL and the 3 for align */
    }
    Msg.Cmd.SignatureLen           = SignatureLen;

    ExtCtrl.TxPayloadLen = ((SignatureLen+3) & (~3)); /* align */
    ExtCtrl.pTxPayload   = (uint8_t*)pSignature;
    ExtCtrl.RxPayloadLen = (int16_t)Msg.Cmd.CertificFileNameLength;
    ExtCtrl.pRxPayload   = (uint8_t*)pCeritificateFileName; /* Add signature */

    if(ExtCtrl.pRxPayload != NULL &&  ExtCtrl.RxPayloadLen != 0) {
        ExtCtrl.RxPayloadLen = ExtCtrl.RxPayloadLen * (-1);
    }

    VERIFY_RET_OK(_driver._SlDrvCmdOp((_SlCmdCtrl_t *)&_SlFsCloseCmdCtrl, &Msg, &ExtCtrl));

    return (int16_t)((int16_t)Msg.Rsp.status);
}
#endif


/*****************************************************************************/
/* sl_FsRead */
/*****************************************************************************/
typedef union {
    _FsReadCommand_t	    Cmd;
    _FsReadResponse_t	    Rsp;
} _SlFsReadMsg_u;

#if _SL_INCLUDE_FUNC(sl_FsRead)
const _SlCmdCtrl_t _SlFsReadCmdCtrl = {
    SL_OPCODE_NVMEM_FILEREADCOMMAND,
    sizeof(_FsReadCommand_t),
    sizeof(_FsReadResponse_t)
};

int32_t cc3100_fs::sl_FsRead(const int32_t FileHdl, uint32_t Offset, uint8_t*  pData, uint32_t Len)
{
    _SlFsReadMsg_u      Msg;
    _SlCmdExt_t         ExtCtrl;
    uint16_t      ChunkLen;
    _SlReturnVal_t      RetVal =0;
    int32_t                RetCount = 0;

    ExtCtrl.TxPayloadLen = 0;
    ExtCtrl.pTxPayload   = NULL;

    ChunkLen = (uint16_t)sl_min(MAX_NVMEM_CHUNK_SIZE,Len);
    ExtCtrl.RxPayloadLen = ChunkLen;
    ExtCtrl.pRxPayload   = (uint8_t *)(pData);
    Msg.Cmd.Offset       = Offset;
    Msg.Cmd.Len          = ChunkLen;
    Msg.Cmd.FileHandle   = FileHdl;
    do {
        RetVal = _driver._SlDrvCmdOp((_SlCmdCtrl_t *)&_SlFsReadCmdCtrl, &Msg, &ExtCtrl);
        if(SL_OS_RET_CODE_OK == RetVal) {
            if( Msg.Rsp.status < 0) {
                if( RetCount > 0) {
                    return RetCount;
                } else {
                    return Msg.Rsp.status;
                }
            }
            RetCount += (int32_t)Msg.Rsp.status;
            Len -= ChunkLen;
            Offset += ChunkLen;
            Msg.Cmd.Offset      = Offset;
            ExtCtrl.pRxPayload   += ChunkLen;
            ChunkLen = (uint16_t)sl_min(MAX_NVMEM_CHUNK_SIZE,Len);
            ExtCtrl.RxPayloadLen  = ChunkLen;
            Msg.Cmd.Len           = ChunkLen;
            Msg.Cmd.FileHandle  = FileHdl;
        } else {
            return RetVal;
        }
    } while(ChunkLen > 0);

    return (int32_t)RetCount;
}
#endif

/*****************************************************************************/
/* sl_FsWrite */
/*****************************************************************************/
typedef union {
    _FsWriteCommand_t	    Cmd;
    _FsWriteResponse_t	    Rsp;
} _SlFsWriteMsg_u;

#if _SL_INCLUDE_FUNC(sl_FsWrite)
const _SlCmdCtrl_t _SlFsWriteCmdCtrl = {
    SL_OPCODE_NVMEM_FILEWRITECOMMAND,
    sizeof(_FsWriteCommand_t),
    sizeof(_FsWriteResponse_t)
};

int32_t cc3100_fs::sl_FsWrite(const int32_t FileHdl, uint32_t Offset, uint8_t*  pData, uint32_t Len)
{
    _SlFsWriteMsg_u     Msg;
    _SlCmdExt_t         ExtCtrl;
    uint16_t      ChunkLen;
    _SlReturnVal_t      RetVal;
    int32_t                RetCount = 0;

    ExtCtrl.RxPayloadLen = 0;
    ExtCtrl.pRxPayload   = NULL;

    ChunkLen = (uint16_t)sl_min(MAX_NVMEM_CHUNK_SIZE,Len);
    ExtCtrl.TxPayloadLen = ChunkLen;
    ExtCtrl.pTxPayload   = (uint8_t *)(pData);
    Msg.Cmd.Offset      = Offset;
    Msg.Cmd.Len          = ChunkLen;
    Msg.Cmd.FileHandle  = FileHdl;

    do {

        RetVal = _driver._SlDrvCmdOp((_SlCmdCtrl_t *)&_SlFsWriteCmdCtrl, &Msg, &ExtCtrl);
        if(SL_OS_RET_CODE_OK == RetVal) {
            if( Msg.Rsp.status < 0) {
                if( RetCount > 0) {
                    return RetCount;
                } else {
                    return Msg.Rsp.status;
                }
            }

            RetCount += (int32_t)Msg.Rsp.status;
            Len -= ChunkLen;
            Offset += ChunkLen;
            Msg.Cmd.Offset        = Offset;
            ExtCtrl.pTxPayload   += ChunkLen;
            ChunkLen = (uint16_t)sl_min(MAX_NVMEM_CHUNK_SIZE,Len);
            ExtCtrl.TxPayloadLen  = ChunkLen;
            Msg.Cmd.Len           = ChunkLen;
            Msg.Cmd.FileHandle  = FileHdl;
        } else {
            return RetVal;
        }
    } while(ChunkLen > 0);

    return (int32_t)RetCount;
}
#endif

/*****************************************************************************/
/* sl_FsGetInfo */
/*****************************************************************************/
typedef union {
    _FsGetInfoCommand_t	    Cmd;
    _FsGetInfoResponse_t    Rsp;
} _SlFsGetInfoMsg_u;

#if _SL_INCLUDE_FUNC(sl_FsGetInfo)
const _SlCmdCtrl_t _SlFsGetInfoCmdCtrl = {
    SL_OPCODE_NVMEM_FILEGETINFOCOMMAND,
    sizeof(_FsGetInfoCommand_t),
    sizeof(_FsGetInfoResponse_t)
};

int16_t cc3100_fs::sl_FsGetInfo(const uint8_t *pFileName, const uint32_t Token,SlFsFileInfo_t* pFsFileInfo)
{
    _SlFsGetInfoMsg_u    Msg;
    _SlCmdExt_t          CmdExt;

    CmdExt.TxPayloadLen = (_sl_Strlen(pFileName)+4) & (~3); /* add 4: 1 for NULL and the 3 for align  */
    CmdExt.RxPayloadLen = 0;
    CmdExt.pTxPayload   = (uint8_t *)pFileName;
    CmdExt.pRxPayload   = NULL;
    Msg.Cmd.Token       = Token;

    VERIFY_RET_OK(_driver._SlDrvCmdOp((_SlCmdCtrl_t *)&_SlFsGetInfoCmdCtrl, &Msg, &CmdExt));

    pFsFileInfo->flags        = Msg.Rsp.flags;
    pFsFileInfo->FileLen      = Msg.Rsp.FileLen;
    pFsFileInfo->AllocatedLen = Msg.Rsp.AllocatedLen;
    pFsFileInfo->Token[0]     = Msg.Rsp.Token[0];
    pFsFileInfo->Token[1]     = Msg.Rsp.Token[1];
    pFsFileInfo->Token[2]     = Msg.Rsp.Token[2];
    pFsFileInfo->Token[3]     = Msg.Rsp.Token[3];
    return  (int16_t)((int16_t)Msg.Rsp.Status);
}
#endif

/*****************************************************************************/
/* sl_FsDel */
/*****************************************************************************/
typedef union {
    _FsDeleteCommand_t   	    Cmd;
    _FsDeleteResponse_t	        Rsp;
} _SlFsDeleteMsg_u;

#if _SL_INCLUDE_FUNC(sl_FsDel)
const _SlCmdCtrl_t _SlFsDeleteCmdCtrl = {
    SL_OPCODE_NVMEM_FILEDELCOMMAND,
    sizeof(_FsDeleteCommand_t),
    sizeof(_FsDeleteResponse_t)
};

int16_t cc3100_fs::sl_FsDel(const uint8_t *pFileName, const uint32_t Token)
{
    _SlFsDeleteMsg_u Msg;
    _SlCmdExt_t          CmdExt;

    CmdExt.TxPayloadLen = (_sl_Strlen(pFileName)+4) & (~3); /* add 4: 1 for NULL and the 3 for align */
    CmdExt.RxPayloadLen = 0;
    CmdExt.pTxPayload   = (uint8_t *)pFileName;
    CmdExt.pRxPayload   = NULL;
    Msg.Cmd.Token       = Token;


    VERIFY_RET_OK(_driver._SlDrvCmdOp((_SlCmdCtrl_t *)&_SlFsDeleteCmdCtrl, &Msg, &CmdExt));

    return  (int16_t)((int16_t)Msg.Rsp.status);
}
#endif

}//namespace mbed_cc3100