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********************************************************************************
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    *   Redistributions of source code must retain the above copyright notice,
	    this list of conditions and the following disclaimer. 

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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
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*******************************************************************************/


#include "ctrlEnv/sys/mvSysGbe.h"


typedef struct _mvEthDecWin
{
    MV_TARGET     target;
    MV_ADDR_WIN   addrWin;  /* An address window*/
    MV_BOOL       enable;   /* Address decode window is enabled/disabled */
  
}MV_ETH_DEC_WIN;

MV_TARGET ethAddrDecPrioTap[] =
{
#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_DEVICE_CS0)
        DEVICE_CS0,
#endif
#if defined(MV_INCLUDE_DEVICE_CS1)
        DEVICE_CS1,
#endif
#if defined(MV_INCLUDE_DEVICE_CS2)
        DEVICE_CS2,
#endif
#if defined(MV_INCLUDE_DEVICE_CS3)
        DEVICE_CS3,
#endif
#if defined(MV_INCLUDE_PEX)
        PEX0_IO,
#endif
        TBL_TERM
};

static MV_STATUS   ethWinOverlapDetect(int port, MV_U32 winNum, MV_ADDR_WIN *pAddrWin);
static MV_STATUS   mvEthWinSet(int port, MV_U32 winNum, MV_ETH_DEC_WIN *pAddrDecWin);
static MV_STATUS   mvEthWinGet(int port, MV_U32 winNum, MV_ETH_DEC_WIN *pAddrDecWin);

                                                                                                                             
/*******************************************************************************
* mvEthWinInit - Initialize ETH address decode windows 
*
* DESCRIPTION:
*               This function initialize ETH window decode unit. It set the 
*               default address decode windows of the unit.
*
* INPUT:
*       None.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_ERROR if setting fail.
*******************************************************************************/
/* Configure EthDrv memory map registes. */
MV_STATUS 	mvEthWinInit (int port)
{
    MV_U32          winNum, status, winPrioIndex=0, i, regVal=0;
    MV_ETH_DEC_WIN  ethWin;
    MV_CPU_DEC_WIN  cpuAddrDecWin;
    static MV_U32   accessProtReg = 0;

#if (MV_ETH_VERSION <= 1)
    static MV_BOOL  isFirst = MV_TRUE;

    if(isFirst == MV_FALSE)
    {
        MV_REG_WRITE(ETH_ACCESS_PROTECT_REG(port), accessProtReg);
        return MV_OK;
    }
    isFirst = MV_FALSE;
#endif /* MV_GIGA_ETH_VERSION */

    /* Initiate Ethernet address decode */

    /* First disable all address decode windows */
    for(winNum=0; winNum<ETH_MAX_DECODE_WIN; winNum++)
    {
        regVal |= MV_BIT_MASK(winNum);
    }
    MV_REG_WRITE(ETH_BASE_ADDR_ENABLE_REG(port), regVal);

   /* Go through all windows in user table until table terminator      */
    for (winNum=0; ((ethAddrDecPrioTap[winPrioIndex] != TBL_TERM) && 
                    (winNum < ETH_MAX_DECODE_WIN)); )
    {
        /* first get attributes from CPU If */
        status = mvCpuIfTargetWinGet(ethAddrDecPrioTap[winPrioIndex], 
                                     &cpuAddrDecWin);

        if(MV_NO_SUCH == status)
        {
            winPrioIndex++;
            continue;
        }
		if (MV_OK != status)
		{
			mvOsPrintf("mvEthWinInit: ERR. mvCpuIfTargetWinGet failed\n");
			return MV_ERROR;
		}

        if (cpuAddrDecWin.enable == MV_TRUE)
        {
            ethWin.addrWin.baseHigh = cpuAddrDecWin.addrWin.baseHigh;
            ethWin.addrWin.baseLow = cpuAddrDecWin.addrWin.baseLow;
            ethWin.addrWin.size = cpuAddrDecWin.addrWin.size;
            ethWin.enable = MV_TRUE;
            ethWin.target = ethAddrDecPrioTap[winPrioIndex];

            if(MV_OK != mvEthWinSet(port, winNum, &ethWin))
            {
                mvOsPrintf("mvEthWinInit: ERR. mvEthWinSet failed winNum=%d\n",
                           winNum);
                return MV_ERROR;
            }
            winNum++;
        }
        winPrioIndex ++;
    }

    /* set full access to all windows. */
    for(i=0; i<winNum; i++)
    {
        accessProtReg |= (FULL_ACCESS << (i*2));
    }
    MV_REG_WRITE(ETH_ACCESS_PROTECT_REG(port), accessProtReg);

    return MV_OK;
}

/*******************************************************************************
* mvEthWinSet - Set ETH 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 ETH will be able to access the
*       target within the address window.
*
* INPUT:
*       winNum      - ETH to target address decode window number.
*       pAddrDecWin - ETH 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.
*
*******************************************************************************/
MV_STATUS mvEthWinSet(int port, MV_U32 winNum, MV_ETH_DEC_WIN *pAddrDecWin)
{
    MV_TARGET_ATTRIB    targetAttribs;
    MV_DEC_REGS         decRegs;
    
    /* Parameter checking   */
    if (winNum >= ETH_MAX_DECODE_WIN)
    {
        mvOsPrintf("mvEthWinSet: ERR. Invalid win num %d\n",winNum);
        return MV_BAD_PARAM;
    }    
    
    /* Check if the requested window overlapps with current windows     */
    if (MV_TRUE == ethWinOverlapDetect(port, winNum, &pAddrDecWin->addrWin))
    {
        mvOsPrintf("mvEthWinSet: ERR. Window %d overlap\n", winNum);
        return MV_ERROR;
    }

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

    
    decRegs.baseReg = MV_REG_READ(ETH_WIN_BASE_REG(port, winNum));
    decRegs.sizeReg = MV_REG_READ(ETH_WIN_SIZE_REG(port, winNum));
    
    if (MV_OK != mvCtrlAddrDecToReg(&(pAddrDecWin->addrWin),&decRegs))
    {
        mvOsPrintf("mvEthWinSet:mvCtrlAddrDecToReg Failed\n");
        return MV_ERROR;
    }
    
    mvCtrlAttribGet(pAddrDecWin->target,&targetAttribs);
    
    /* set attributes */
    decRegs.baseReg &= ~ETH_WIN_ATTR_MASK;
    decRegs.baseReg |= targetAttribs.attrib << ETH_WIN_ATTR_OFFS;
    /* set target ID */
    decRegs.baseReg &= ~ETH_WIN_TARGET_MASK;
    decRegs.baseReg |= targetAttribs.targetId << ETH_WIN_TARGET_OFFS;
    
    /* for the safe side we disable the window before writing the new
    values */
    mvEthWinEnable(port, winNum, MV_FALSE);
    MV_REG_WRITE(ETH_WIN_BASE_REG(port, winNum), decRegs.baseReg);
    
    /* Write to address decode Size Register                            */
    MV_REG_WRITE(ETH_WIN_SIZE_REG(port, winNum), decRegs.sizeReg);
    
    /* Enable address decode target window                              */
    if (pAddrDecWin->enable == MV_TRUE)
    {
            mvEthWinEnable(port, winNum, MV_TRUE);
    }
    
    return MV_OK;
}

/*******************************************************************************
* mvETHWinGet - Get dma peripheral target address window.
*
* DESCRIPTION:
*               Get ETH peripheral target address window.
*
* INPUT:
*       winNum - ETH to target address decode window number.
*
* OUTPUT:
*       pAddrDecWin - ETH target window data structure.
*
* RETURN:
*       MV_ERROR if register parameters are invalid.
*
*******************************************************************************/
MV_STATUS mvEthWinGet(int port, MV_U32 winNum, MV_ETH_DEC_WIN *pAddrDecWin)
{
    MV_DEC_REGS decRegs;
    MV_TARGET_ATTRIB targetAttrib;
    
    /* Parameter checking   */
    if (winNum >= ETH_MAX_DECODE_WIN)
    {
        mvOsPrintf("mvEthWinGet: ERR. Invalid winNum %d\n", winNum);
        return MV_NOT_SUPPORTED;
    }
    
    decRegs.baseReg =  MV_REG_READ(ETH_WIN_BASE_REG(port, winNum));
    decRegs.sizeReg = MV_REG_READ(ETH_WIN_SIZE_REG(port, winNum));
    
    if (MV_OK != mvCtrlRegToAddrDec(&decRegs,&(pAddrDecWin->addrWin)))
    {
        mvOsPrintf("mvAhbToMbusWinGet: mvCtrlRegToAddrDec Failed \n");
        return MV_ERROR;
    }
    
    /* attrib and targetId */
    targetAttrib.attrib = 
     (decRegs.baseReg & ETH_WIN_ATTR_MASK) >> ETH_WIN_ATTR_OFFS;
    targetAttrib.targetId = 
     (decRegs.baseReg & ETH_WIN_TARGET_MASK) >> ETH_WIN_TARGET_OFFS;
    
    pAddrDecWin->target = mvCtrlTargetGet(&targetAttrib);
    
    /* Check if window is enabled   */
    if (~(MV_REG_READ(ETH_BASE_ADDR_ENABLE_REG(port))) & (1 << winNum) )
    {
        pAddrDecWin->enable = MV_TRUE;
    }
    else
    {
        pAddrDecWin->enable = MV_FALSE;
    }
    
        return MV_OK;
}

/*******************************************************************************
* mvEthWinEnable - Enable/disable a ETH to target address window
*
* DESCRIPTION:
*       This function enable/disable a ETH to target address window.
*       According to parameter 'enable' the routine will enable the
*       window, thus enabling ETH accesses (before enabling the window it is
*       tested for overlapping). Otherwise, the window will be disabled.
*
* INPUT:
*       winNum - ETH to target address decode window number.
*       enable - Enable/disable parameter.
*
* OUTPUT:
*       N/A
*
* RETURN:
*       MV_ERROR if decode window number was wrong or enabled window overlapps.
*
*******************************************************************************/
MV_STATUS mvEthWinEnable(int port, MV_U32 winNum,MV_BOOL enable)
{
    MV_ETH_DEC_WIN addrDecWin;

    /* Parameter checking   */
    if (winNum >= ETH_MAX_DECODE_WIN)
    {
        mvOsPrintf("mvEthTargetWinEnable:ERR. Invalid winNum%d\n",winNum);
        return MV_ERROR;
    }

    if (enable == MV_TRUE)
    {   /* First check for overlap with other enabled windows               */
        /* Get current window */
        if (MV_OK != mvEthWinGet(port, winNum, &addrDecWin))
        {
            mvOsPrintf("mvEthTargetWinEnable:ERR. targetWinGet fail\n");
            return MV_ERROR;
        }
        /* Check for overlapping */
        if (MV_FALSE == ethWinOverlapDetect(port, winNum, &(addrDecWin.addrWin)))
        {
            /* No Overlap. Enable address decode target window              */
            MV_REG_BIT_RESET(ETH_BASE_ADDR_ENABLE_REG(port), (1 << winNum));
        }
        else
        {   /* Overlap detected */
            mvOsPrintf("mvEthTargetWinEnable:ERR. Overlap detected\n");
            return MV_ERROR;
        }
    }
    else
    {   /* Disable address decode target window                             */
        MV_REG_BIT_SET(ETH_BASE_ADDR_ENABLE_REG(port), (1 << winNum));
    }
    return MV_OK;
}
 
/*******************************************************************************
* mvEthWinTargetGet - Get Window number associated with target
*
* DESCRIPTION:
*
* INPUT:
*
* OUTPUT:
*
* RETURN:
*       window number
*
*******************************************************************************/
MV_U32  mvEthWinTargetGet(int port, MV_TARGET target)
{
    MV_ETH_DEC_WIN decWin;
    MV_U32 winNum;

    /* Check parameters */
    if (target >= MAX_TARGETS)
    {
        mvOsPrintf("mvAhbToMbusWinTargetGet: target %d is Illigal\n", target);
        return 0xffffffff;
    }

    for (winNum=0; winNum<ETH_MAX_DECODE_WIN; winNum++)
    {
        if (mvEthWinGet(port, winNum,&decWin) != MV_OK)
        {
            mvOsPrintf("mvAhbToMbusWinTargetGet: window returned error\n");
            return 0xffffffff;
        }

        if (decWin.enable == MV_TRUE)
        {
            if (decWin.target == target)
            {
                return winNum;
            }  
        }
    }
    return 0xFFFFFFFF;
}
 
/*******************************************************************************
* mvEthProtWinSet - Set access protection of Ethernet to target window.
*
* DESCRIPTION:
*       Each Ethernet port can be configured with access attributes for each 
*       of the Ethenret to target windows (address decode windows). This
*       function sets access attributes to a given window for the given channel.
*
* INPUTS:
*       ethPort   - ETH channel number. See MV_ETH_CHANNEL enumerator.
*       winNum - IETH to target address decode window number.
*       access - IETH access rights. See MV_ACCESS_RIGHTS enumerator.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_ERROR in case window number is invalid or access right reserved.
*
*******************************************************************************/
MV_STATUS mvEthProtWinSet(MV_U32 portNo, MV_U32 winNum, MV_ACCESS_RIGHTS access)
{    
    MV_U32 protReg;

    /* Parameter checking   */
    if(portNo >= mvCtrlEthMaxPortGet())
    {
        mvOsPrintf("mvEthProtWinSet:ERR. Invalid port number %d\n", portNo);
        return MV_ERROR;
    }
    
    if (winNum >= ETH_MAX_DECODE_WIN)
    {
            mvOsPrintf("mvEthProtWinSet:ERR. Invalid winNum%d\n",winNum);
            return MV_ERROR;
    }

    if((access == ACC_RESERVED) || (access >= MAX_ACC_RIGHTS))
    {
        mvOsPrintf("mvEthProtWinSet:ERR. Inv access param %d\n", access);
        return MV_ERROR;
    }
    /* Read current protection register */
    protReg = MV_REG_READ(ETH_ACCESS_PROTECT_REG(portNo));
                          
    /* Clear protection window field */
    protReg &= ~(ETH_PROT_WIN_MASK(winNum));

    /* Set new protection field value */
    protReg |= (access << (ETH_PROT_WIN_OFFS(winNum)));
    
    /* Write protection register back   */
    MV_REG_WRITE(ETH_ACCESS_PROTECT_REG(portNo), protReg);

    return MV_OK;
}               

/*******************************************************************************
* ethWinOverlapDetect - Detect ETH address windows overlapping
*
* DESCRIPTION:
*       An unpredicted behaviur is expected in case ETH address decode
*       windows overlapps.
*       This function detects ETH 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 ethWinOverlapDetect(int port, MV_U32 winNum, MV_ADDR_WIN *pAddrWin)
{
    MV_U32              baseAddrEnableReg;
    MV_U32              winNumIndex;
    MV_ETH_DEC_WIN      addrDecWin;
                                                                                                                             
    /* Read base address enable register. Do not check disabled windows     */
    baseAddrEnableReg = MV_REG_READ(ETH_BASE_ADDR_ENABLE_REG(port));
                                                                                                                             
    for (winNumIndex=0; winNumIndex<ETH_MAX_DECODE_WIN; winNumIndex++)
    {
        /* Do not check window itself           */
        if (winNumIndex == winNum)
        {
            continue;
        }
    
        /* Do not check disabled windows        */
        if (baseAddrEnableReg & (1 << winNumIndex))
        {
            continue;
        }
    
        /* Get window parameters        */
        if (MV_OK != mvEthWinGet(port, winNumIndex, &addrDecWin))
        {
            mvOsPrintf("ethWinOverlapDetect: ERR. TargetWinGet failed\n");
            return MV_ERROR;
        }
/*    
        mvOsPrintf("ethWinOverlapDetect:\n
            winNumIndex =%d baseHigh =0x%x baseLow=0x%x size=0x%x enable=0x%x\n",
            winNumIndex,
            addrDecWin.addrWin.baseHigh,
            addrDecWin.addrWin.baseLow,
            addrDecWin.addrWin.size,
            addrDecWin.enable);
*/
        if (MV_TRUE == ctrlWinOverlapTest(pAddrWin, &(addrDecWin.addrWin)))
        {
            return MV_TRUE;
        }
    }
    return MV_FALSE;
}

/*******************************************************************************
* mvEthAddrDecShow - Print the Etherent address decode map.
*
* DESCRIPTION:
*       This function print the Etherent address decode map.
*
* INPUT:
*       None.
*
* OUTPUT:
*       None.
*
* RETURN:
*       None.
*
*******************************************************************************/
void    mvEthPortAddrDecShow(int port)
{
    MV_ETH_DEC_WIN  win;
    int             i;

    mvOsOutput( "\n" );
    mvOsOutput( "ETH %d:\n", port );
    mvOsOutput( "----\n" );

    for( i = 0; i < ETH_MAX_DECODE_WIN; i++ )
    {
        memset( &win, 0, sizeof(ETH_MAX_DECODE_WIN) );

        mvOsOutput( "win%d - ", i );

        if( mvEthWinGet(port, i, &win ) == MV_OK )
        {
            if( win.enable )
            {
                mvOsOutput( "%s base %08x, ",
                mvCtrlTargetNameGet(win.target), win.addrWin.baseLow );
                mvOsOutput( "...." );
                mvSizePrint( win.addrWin.size );

                mvOsOutput( "\n" );
            }
            else
                mvOsOutput( "disable\n" );
        }
    }
    return;
}

void    mvEthAddrDecShow(void)
{
    int port;

    for(port=0; port<mvCtrlEthMaxPortGet(); port++)
    {
	if (MV_FALSE == mvCtrlPwrClckGet(ETH_GIG_UNIT_ID, port)) continue;
    
        mvEthPortAddrDecShow(port);
    }
}


void    mvEthInit(void)
{
    MV_U32 port;

    /* Power down all existing ports */
    for(port=0; port<mvCtrlEthMaxPortGet(); port++)
    {
	    if (MV_FALSE == mvCtrlPwrClckGet(ETH_GIG_UNIT_ID, port)) 
            continue;

        mvEthPortPowerUp(port);
	    mvEthWinInit(port);
    }
    mvEthHalInit();
}