path: root/target/linux/generic/files/crypto/ocf/kirkwood/mvHal/kw_family/ctrlEnv/sys/mvSysCesa.c

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*******************************************************************************/

#include "mvSysCesa.h"

#if (MV_CESA_VERSION >= 2)
MV_TARGET tdmaAddrDecPrioTable[] =
{
#if defined(MV_INCLUDE_SDRAM_CS0)
    SDRAM_CS0,
#endif
#if defined(MV_INCLUDE_SDRAM_CS1)
    SDRAM_CS1,
#endif
#if defined(MV_INCLUDE_SDRAM_CS2)
    SDRAM_CS2,
#endif
#if defined(MV_INCLUDE_SDRAM_CS3)
    SDRAM_CS3,
#endif
#if defined(MV_INCLUDE_PEX)
    PEX0_MEM,
#endif

    TBL_TERM
};

/*******************************************************************************
* mvCesaWinGet - Get TDMA target address window.
*
* DESCRIPTION:
*       Get TDMA target address window.
*
* INPUT:
*       winNum - TDMA target address decode window number.
*
* OUTPUT:
*       pDecWin - TDMA target window data structure.
*
* RETURN:
*       MV_ERROR if register parameters are invalid.
*
*******************************************************************************/
static MV_STATUS mvCesaWinGet(MV_U32 winNum, MV_DEC_WIN *pDecWin)
{                                                                                                                         
    MV_DEC_WIN_PARAMS   winParam;
    MV_U32              sizeReg, baseReg;

    /* Parameter checking   */
    if (winNum >= MV_CESA_TDMA_ADDR_DEC_WIN)
    {
        mvOsPrintf("%s : ERR. Invalid winNum %d\n", 
                    __FUNCTION__, winNum);
        return MV_NOT_SUPPORTED;
    }

    baseReg = MV_REG_READ( MV_CESA_TDMA_BASE_ADDR_REG(winNum) );
    sizeReg = MV_REG_READ( MV_CESA_TDMA_WIN_CTRL_REG(winNum) );
 
   /* Check if window is enabled   */
    if(sizeReg & MV_CESA_TDMA_WIN_ENABLE_MASK) 
    {
        pDecWin->enable = MV_TRUE;

        /* Extract window parameters from registers */
        winParam.targetId = (sizeReg & MV_CESA_TDMA_WIN_TARGET_MASK) >> MV_CESA_TDMA_WIN_TARGET_OFFSET; 
        winParam.attrib   = (sizeReg & MV_CESA_TDMA_WIN_ATTR_MASK) >> MV_CESA_TDMA_WIN_ATTR_OFFSET;
        winParam.size     = (sizeReg & MV_CESA_TDMA_WIN_SIZE_MASK) >> MV_CESA_TDMA_WIN_SIZE_OFFSET;
        winParam.baseAddr = (baseReg & MV_CESA_TDMA_WIN_BASE_MASK);

        /* Translate the decode window parameters to address decode struct */
        if (MV_OK != mvCtrlParamsToAddrDec(&winParam, pDecWin))
        {
            mvOsPrintf("Failed to translate register parameters to CESA address" \
                       " decode window structure\n");
            return MV_ERROR;        
        }
    }
    else
    {
        pDecWin->enable = MV_FALSE;
    }
    return MV_OK;
}

/*******************************************************************************
* cesaWinOverlapDetect - Detect CESA TDMA address windows overlapping
*
* DESCRIPTION:
*       An unpredicted behaviur is expected in case TDMA address decode 
*       windows overlapps.
*       This function detects TDMA address decode windows overlapping of a 
*       specified window. The function does not check the window itself for 
*       overlapping. The function also skipps disabled address decode windows.
*
* INPUT:
*       winNum      - address decode window number.
*       pAddrDecWin - An address decode window struct.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_TRUE     - if the given address window overlap current address
*                   decode map, 
*       MV_FALSE    - otherwise, MV_ERROR if reading invalid data 
*                   from registers.
*
*******************************************************************************/
static MV_STATUS cesaWinOverlapDetect(MV_U32 winNum, MV_ADDR_WIN *pAddrWin)
{
    MV_U32          winNumIndex;
    MV_DEC_WIN      addrDecWin;
    
    for(winNumIndex=0; winNumIndex<MV_CESA_TDMA_ADDR_DEC_WIN; winNumIndex++)
    {
        /* Do not check window itself       */
        if (winNumIndex == winNum)
        {
            continue;
        }

        /* Get window parameters    */
        if (MV_OK != mvCesaWinGet(winNumIndex, &addrDecWin))
        {
            mvOsPrintf("%s: ERR. TargetWinGet failed\n", __FUNCTION__);
            return MV_ERROR;
        }

        /* Do not check disabled windows    */
        if(addrDecWin.enable == MV_FALSE)
        {
            continue;
        }

        if (MV_TRUE == ctrlWinOverlapTest(pAddrWin, &(addrDecWin.addrWin)))
        {
            return MV_TRUE;
        }        
    }
    return MV_FALSE;
}

/*******************************************************************************
* mvCesaTdmaWinSet - Set CESA TDMA target address window
*
* DESCRIPTION:
*       This function sets a peripheral target (e.g. SDRAM bank0, PCI_MEM0) 
*       address window, also known as address decode window. 
*       After setting this target window, the CESA TDMA will be able to access the 
*       target within the address window. 
*
* INPUT:
*       winNum      - CESA TDMA target address decode window number.
*       pAddrDecWin - CESA TDMA target window data structure.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_ERROR        - if address window overlapps with other address decode windows.
*       MV_BAD_PARAM    - if base address is invalid parameter or target is 
*                       unknown.
*
*******************************************************************************/
static MV_STATUS mvCesaTdmaWinSet(MV_U32 winNum, MV_DEC_WIN *pDecWin)
{
    MV_DEC_WIN_PARAMS   winParams;
    MV_U32              sizeReg, baseReg;
    
    /* Parameter checking   */
    if (winNum >= MV_CESA_TDMA_ADDR_DEC_WIN)
    {
        mvOsPrintf("mvCesaTdmaWinSet: ERR. Invalid win num %d\n",winNum);
        return MV_BAD_PARAM;
    }

    /* Check if the requested window overlapps with current windows     */
    if (MV_TRUE == cesaWinOverlapDetect(winNum, &pDecWin->addrWin))
    {
        mvOsPrintf("%s: ERR. Window %d overlap\n", __FUNCTION__, winNum);
        return MV_ERROR;
    }

    /* check if address is aligned to the size */
    if(MV_IS_NOT_ALIGN(pDecWin->addrWin.baseLow, pDecWin->addrWin.size))
    {
        mvOsPrintf("mvCesaTdmaWinSet: Error setting CESA TDMA window %d to "\
                   "target %s.\nAddress 0x%08x is unaligned to size 0x%x.\n",
                   winNum,
                   mvCtrlTargetNameGet(pDecWin->target), 
                   pDecWin->addrWin.baseLow,
                   pDecWin->addrWin.size);
        return MV_ERROR;
    }

    if(MV_OK != mvCtrlAddrDecToParams(pDecWin, &winParams))
    {
        mvOsPrintf("%s: mvCtrlAddrDecToParams Failed\n", __FUNCTION__);
        return MV_ERROR;
    }

    /* set Size, Attributes and TargetID */
    sizeReg = (((winParams.targetId << MV_CESA_TDMA_WIN_TARGET_OFFSET) & MV_CESA_TDMA_WIN_TARGET_MASK) |
               ((winParams.attrib   << MV_CESA_TDMA_WIN_ATTR_OFFSET)   & MV_CESA_TDMA_WIN_ATTR_MASK)   |
               ((winParams.size << MV_CESA_TDMA_WIN_SIZE_OFFSET) & MV_CESA_TDMA_WIN_SIZE_MASK));

    if (pDecWin->enable == MV_TRUE)
    {
        sizeReg |= MV_CESA_TDMA_WIN_ENABLE_MASK;
    }
    else
    {
        sizeReg &= ~MV_CESA_TDMA_WIN_ENABLE_MASK;
    }

    /* Update Base value  */
    baseReg = (winParams.baseAddr & MV_CESA_TDMA_WIN_BASE_MASK);     

    MV_REG_WRITE( MV_CESA_TDMA_WIN_CTRL_REG(winNum), sizeReg);
    MV_REG_WRITE( MV_CESA_TDMA_BASE_ADDR_REG(winNum), baseReg);
        
    return MV_OK;
}


static MV_STATUS   mvCesaTdmaAddrDecInit (void)
{
    MV_U32          winNum;
    MV_STATUS       status;
    MV_CPU_DEC_WIN  cpuAddrDecWin;
    MV_DEC_WIN      cesaWin;
    MV_U32          winPrioIndex = 0;

    /* First disable all address decode windows */
    for(winNum=0; winNum<MV_CESA_TDMA_ADDR_DEC_WIN; winNum++)
    {
        MV_REG_BIT_RESET(MV_CESA_TDMA_WIN_CTRL_REG(winNum), MV_CESA_TDMA_WIN_ENABLE_MASK);
    }

    /* Go through all windows in user table until table terminator      */
    winNum = 0;
    while( (tdmaAddrDecPrioTable[winPrioIndex] != TBL_TERM) && 
           (winNum < MV_CESA_TDMA_ADDR_DEC_WIN) )    {

        /* first get attributes from CPU If */
        status = mvCpuIfTargetWinGet(tdmaAddrDecPrioTable[winPrioIndex], 
                                     &cpuAddrDecWin);
        if(MV_NO_SUCH == status){
	    winPrioIndex++;
            continue;
	}

        if (MV_OK != status)
        {
            mvOsPrintf("cesaInit: TargetWinGet failed. winNum=%d, winIdx=%d, target=%d, status=0x%x\n",
                        winNum, winPrioIndex, tdmaAddrDecPrioTable[winPrioIndex], status);
            return MV_ERROR;
        }
        if (cpuAddrDecWin.enable == MV_TRUE)
        {
            cesaWin.addrWin.baseHigh = cpuAddrDecWin.addrWin.baseHigh;
            cesaWin.addrWin.baseLow  = cpuAddrDecWin.addrWin.baseLow;
            cesaWin.addrWin.size     = cpuAddrDecWin.addrWin.size;
            cesaWin.enable           = MV_TRUE;
            cesaWin.target           = tdmaAddrDecPrioTable[winPrioIndex];

#if defined(MV646xx) 
            /* Get the default attributes for that target window */
            mvCtrlDefAttribGet(cesaWin.target, &cesaWin.addrWinAttr);
#endif /* MV646xx */ 

            if(MV_OK != mvCesaTdmaWinSet(winNum, &cesaWin))
            {
                mvOsPrintf("mvCesaTdmaWinSet FAILED: winNum=%d\n",
                           winNum);
                return MV_ERROR;
            }
            winNum++;
        }
        winPrioIndex++;
    }
    return MV_OK;
}
#endif /* MV_CESA_VERSION >= 2 */




MV_STATUS mvCesaInit (int numOfSession, int queueDepth, char* pSramBase, void *osHandle)
{
    MV_U32 cesaCryptEngBase;
    MV_CPU_DEC_WIN addrDecWin;

    if(sizeof(MV_CESA_SRAM_MAP) > MV_CESA_SRAM_SIZE)
    {
        mvOsPrintf("mvCesaInit: Wrong SRAM map - %ld > %d\n",
                sizeof(MV_CESA_SRAM_MAP), MV_CESA_SRAM_SIZE);
        return MV_FAIL;
    }
#if 0
    if (mvCpuIfTargetWinGet(CRYPT_ENG, &addrDecWin) == MV_OK)
        cesaCryptEngBase = addrDecWin.addrWin.baseLow;
    else
    {
        mvOsPrintf("mvCesaInit: ERR. mvCpuIfTargetWinGet failed\n");
        return MV_ERROR;
    }
#else
        cesaCryptEngBase = (MV_U32)pSramBase;
#endif     

#if 0 /* Already done in the platform init */
#if (MV_CESA_VERSION >= 2)
    mvCesaTdmaAddrDecInit();
#endif /* MV_CESA_VERSION >= 2 */
#endif
	return mvCesaHalInit(numOfSession, queueDepth, pSramBase, cesaCryptEngBase, 
			     osHandle);

}