/*******************************************************************************
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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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	notice, this list of conditions and the following disclaimer in the
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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


#include "ctrlEnv/sys/mvSysTs.h"


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


MV_TARGET tsuAddrDecPrioTap[] =
{
#if defined(MV_INCLUDE_PEX)
        PEX0_MEM,
#endif
#if defined(MV_INCLUDE_PCI)
        PCI0_MEM,
#endif
#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
#if defined(MV_INCLUDE_PCI)
        PCI0_IO,
#endif
        TBL_TERM
};

static MV_STATUS tsuWinOverlapDetect(MV_U32 winNum, MV_ADDR_WIN *pAddrWin);
static MV_STATUS mvTsuWinSet(MV_U32 winNum, MV_TSU_DEC_WIN *pAddrDecWin);
static MV_STATUS mvTsuWinGet(MV_U32 winNum, MV_TSU_DEC_WIN *pAddrDecWin);
MV_STATUS mvTsuWinEnable(MV_U32 winNum,MV_BOOL enable);

/*******************************************************************************
* mvTsuWinInit
*
* DESCRIPTION:
* 	Initialize the TSU unit address decode windows.
*
* INPUT:
*       None.
* OUTPUT:
*	None.
* RETURN:
*       MV_OK	- on success,
*
*******************************************************************************/
MV_STATUS mvTsuWinInit(void)
{
	MV_U32          winNum, status, winPrioIndex=0;
	MV_TSU_DEC_WIN  tsuWin;
	MV_CPU_DEC_WIN  cpuAddrDecWin;

	/* First disable all address decode windows */
	for(winNum = 0; winNum < TSU_MAX_DECODE_WIN; winNum++)
	{
		MV_REG_BIT_RESET(MV_TSU_WIN_CTRL_REG(winNum),
				 TSU_WIN_CTRL_EN_MASK);
	}

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

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

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

			if(MV_OK != mvTsuWinSet(winNum, &tsuWin))
			{
				mvOsPrintf("mvTsuWinInit: ERR. mvTsuWinSet failed winNum=%d\n",
					   winNum);
				return MV_ERROR;
			}
			winNum++;
		}
		winPrioIndex ++;
	}

	return MV_OK;
}


/*******************************************************************************
* mvTsuWinSet
*
* 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 TSU will be able to access the
*       target within the address window.
*
* INPUT:
*       winNum      - TSU to target address decode window number.
*       pAddrDecWin - TSU 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 mvTsuWinSet(MV_U32 winNum, MV_TSU_DEC_WIN *pAddrDecWin)
{
	MV_TARGET_ATTRIB    targetAttribs;
	MV_DEC_REGS         decRegs;

	/* Parameter checking   */
	if(winNum >= TSU_MAX_DECODE_WIN)
	{
		mvOsPrintf("mvTsuWinSet: ERR. Invalid win num %d\n",winNum);
		return MV_BAD_PARAM;
	}    

	/* Check if the requested window overlapps with current windows     */
	if(MV_TRUE == tsuWinOverlapDetect(winNum, &pAddrDecWin->addrWin))
	{
		mvOsPrintf("mvTsuWinSet: 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("mvTsuWinSet: Error setting TSU 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(MV_TSU_WIN_BASE_REG(winNum));
	decRegs.sizeReg = MV_REG_READ(MV_TSU_WIN_CTRL_REG(winNum));
    
	if(MV_OK != mvCtrlAddrDecToReg(&(pAddrDecWin->addrWin),&decRegs))
	{
		mvOsPrintf("mvTsuWinSet: mvCtrlAddrDecToReg Failed\n");
		return MV_ERROR;
	}
    
	mvCtrlAttribGet(pAddrDecWin->target,&targetAttribs);
    
	/* set attributes */
	decRegs.sizeReg &= ~TSU_WIN_CTRL_ATTR_MASK;
	decRegs.sizeReg |= targetAttribs.attrib << TSU_WIN_CTRL_ATTR_OFFS;
	/* set target ID */
	decRegs.sizeReg &= ~TSU_WIN_CTRL_TARGET_MASK;
	decRegs.sizeReg |= targetAttribs.targetId << TSU_WIN_CTRL_TARGET_OFFS;

	/* for the safe side we disable the window before writing the new */
	/* values */
	mvTsuWinEnable(winNum, MV_FALSE);
	MV_REG_WRITE(MV_TSU_WIN_CTRL_REG(winNum),decRegs.sizeReg);

	/* Write to address decode Size Register                            */
	MV_REG_WRITE(MV_TSU_WIN_BASE_REG(winNum), decRegs.baseReg);

	/* Enable address decode target window                              */
	if(pAddrDecWin->enable == MV_TRUE)
	{
		mvTsuWinEnable(winNum,MV_TRUE);
	}

	return MV_OK;
}


/*******************************************************************************
* mvTsuWinGet
*
* DESCRIPTION:
*	Get TSU peripheral target address window.
*
* INPUT:
*	winNum - TSU to target address decode window number.
*
* OUTPUT:
*       pAddrDecWin - TSU target window data structure.
*
* RETURN:
*       MV_ERROR if register parameters are invalid.
*
*******************************************************************************/
MV_STATUS mvTsuWinGet(MV_U32 winNum, MV_TSU_DEC_WIN *pAddrDecWin)
{
	MV_DEC_REGS decRegs;
	MV_TARGET_ATTRIB targetAttrib;

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

	decRegs.baseReg = MV_REG_READ(MV_TSU_WIN_BASE_REG(winNum));                                                                           
	decRegs.sizeReg = MV_REG_READ(MV_TSU_WIN_CTRL_REG(winNum));
 
	if(MV_OK != mvCtrlRegToAddrDec(&decRegs,&(pAddrDecWin->addrWin)))
	{
		mvOsPrintf("mvTsuWinGet: mvCtrlRegToAddrDec Failed \n");
		return MV_ERROR;
	}

	/* attrib and targetId */
	targetAttrib.attrib = 
		(decRegs.sizeReg & TSU_WIN_CTRL_ATTR_MASK) >> TSU_WIN_CTRL_ATTR_OFFS;
	targetAttrib.targetId = 
		(decRegs.sizeReg & TSU_WIN_CTRL_TARGET_MASK) >> TSU_WIN_CTRL_TARGET_OFFS;

	pAddrDecWin->target = mvCtrlTargetGet(&targetAttrib);

	/* Check if window is enabled   */
	if((MV_REG_READ(MV_TSU_WIN_CTRL_REG(winNum)) & TSU_WIN_CTRL_EN_MASK))
	{
		pAddrDecWin->enable = MV_TRUE;
	}
	else
	{
		pAddrDecWin->enable = MV_FALSE;
	}
	
	return MV_OK;
}


/*******************************************************************************
* mvTsuWinEnable
*
* DESCRIPTION:
*       This function enable/disable a TSU to target address window.
*       According to parameter 'enable' the routine will enable the
*       window, thus enabling TSU accesses (before enabling the window it is
*       tested for overlapping). Otherwise, the window will be disabled.
*
* INPUT:
*       winNum - TSU 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 mvTsuWinEnable(MV_U32 winNum,MV_BOOL enable)
{
	MV_TSU_DEC_WIN addrDecWin;

	/* Parameter checking   */
	if(winNum >= TSU_MAX_DECODE_WIN)
	{
		mvOsPrintf("mvTsuWinEnable: 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 != mvTsuWinGet(winNum,&addrDecWin))
		{
			mvOsPrintf("mvTsuWinEnable: ERR. targetWinGet fail\n");
			return MV_ERROR;
		}
		/* Check for overlapping.	*/
		if(MV_FALSE == tsuWinOverlapDetect(winNum,&(addrDecWin.addrWin)))
		{
			/* No Overlap. Enable address decode target window   */
			MV_REG_BIT_SET(MV_TSU_WIN_CTRL_REG(winNum),
				       TSU_WIN_CTRL_EN_MASK);
		}
		else
		{
			/* Overlap detected */
			mvOsPrintf("mvTsuWinEnable: ERR. Overlap detected\n");
			return MV_ERROR;
		}
	}
	else
	{
		/* Disable address decode target window */
		MV_REG_BIT_RESET(MV_TSU_WIN_CTRL_REG(winNum),
				 TSU_WIN_CTRL_EN_MASK);
	}
	return MV_OK;
}

/*******************************************************************************
* mvTsuWinTargetGet
*
* DESCRIPTION:
*	Get Window number associated with target
*
* INPUT:
*	target	- Target ID to get the window number for.
* OUTPUT:
*
* RETURN:
*       window number or 0xFFFFFFFF on error.
*
*******************************************************************************/
MV_U32  mvTsuWinTargetGet(MV_TARGET target)
{
	MV_TSU_DEC_WIN decWin;
	MV_U32 winNum;

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

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

		if (decWin.enable == MV_TRUE)
		{
			if(decWin.target == target)
			{
				return winNum;
			}
		}
	}
	return 0xFFFFFFFF;
}


/*******************************************************************************
* tsuWinOverlapDetect
*
* DESCRIPTION:
*	Detect TSU address windows overlapping
*	An unpredicted behaviur is expected in case TSU address decode
*	windows overlapps.
*	This function detects TSU 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 tsuWinOverlapDetect(MV_U32 winNum, MV_ADDR_WIN *pAddrWin)
{
	MV_U32              ctrlReg;
	MV_U32              winNumIndex;
	MV_TSU_DEC_WIN      addrDecWin;

	for(winNumIndex = 0; winNumIndex < TSU_MAX_DECODE_WIN; winNumIndex++)
	{
		/* Do not check window itself           */
		if(winNumIndex == winNum)
		{
			continue;
		}

		/* Do not check disabled windows        */
		ctrlReg = MV_REG_READ(MV_TSU_WIN_CTRL_REG(winNumIndex));
		if((ctrlReg & TSU_WIN_CTRL_EN_MASK) == 0)
		{
			continue;
		}

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

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


/*******************************************************************************
* mvTsuAddrDecShow
*
* DESCRIPTION:
*	Print the TSU address decode map.
*
* INPUT:
*       None.
*
* OUTPUT:
*       None.
*
* RETURN:
*       None.
*
*******************************************************************************/
void mvTsuAddrDecShow(void)
{
	MV_TSU_DEC_WIN  win;
	int             i;

	if (MV_FALSE == mvCtrlPwrClckGet(TS_UNIT_ID, 0)) 
		return;

	mvOsOutput( "\n" );
	mvOsOutput( "TSU:\n");
	mvOsOutput( "----\n" );

	for(i = 0; i < TSU_MAX_DECODE_WIN; i++)
	{
		memset(&win, 0, sizeof(TSU_MAX_DECODE_WIN));
		mvOsOutput( "win%d - ", i );

		if(mvTsuWinGet(i, &win ) == MV_OK )
		{
			if(win.enable == MV_TRUE)
			{
				mvOsOutput("%s base %08x, ",
					   mvCtrlTargetNameGet(win.target),
					   win.addrWin.baseLow);
				mvOsOutput( "...." );
				mvSizePrint(win.addrWin.size );
				mvOsOutput( "\n" );
			}
			else
			{
				mvOsOutput( "disable\n" );
			}
		}
	}
	return;
}


/*******************************************************************************
* mvTsuInit
*
* DESCRIPTION:
* 	Initialize the TSU unit, and get unit out of reset.
*
* INPUT:
*       coreClock	- The core clock at which the TSU should operate.
*       mode		- The mode on configure the unit into (serial/parallel).
* 	memHandle	- Memory handle used for memory allocations.
* OUTPUT:
*	None.
* RETURN:
*       MV_OK	- on success,
*
*******************************************************************************/
MV_STATUS mvTsuInit(MV_TSU_CORE_CLOCK coreClock, MV_TSU_PORTS_MODE mode,
	            void *osHandle)
{
	MV_STATUS status;

	status = mvTsuWinInit();
	if(status == MV_OK)
		status = mvTsuHalInit(coreClock,mode,osHandle);

	return status;
}