arch/arm/plat-feroceon/mv_hal/cesa/mvCesaAddrDec.c - kernel/prism - Git at Google

 /*******************************************************************************
 Copyright (C) Marvell International Ltd. and its affiliates

 This software file (the "File") is owned and distributed by Marvell
 International Ltd. and/or its affiliates ("Marvell") under the following
 alternative licensing terms.  Once you have made an election to distribute the
 File under one of the following license alternatives, please (i) delete this
 introductory statement regarding license alternatives, (ii) delete the two
 license alternatives that you have not elected to use and (iii) preserve the
 Marvell copyright notice above.

 ********************************************************************************
 Marvell Commercial License Option

 If you received this File from Marvell and you have entered into a commercial
 license agreement (a "Commercial License") with Marvell, the File is licensed
 to you under the terms of the applicable Commercial License.

 ********************************************************************************
 Marvell GPL License Option

 If you received this File from Marvell, you may opt to use, redistribute and/or
 modify this File in accordance with the terms and conditions of the General
 Public License Version 2, June 1991 (the "GPL License"), a copy of which is
 available along with the File in the license.txt file or by writing to the Free
 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
 on the worldwide web at http://www.gnu.org/licenses/gpl.txt.

 THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
 WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
 DISCLAIMED.  The GPL License provides additional details about this warranty
 disclaimer.
 ********************************************************************************
 Marvell BSD License Option

 If you received this File from Marvell, you may opt to use, redistribute and/or
 modify this File under the following licensing terms.
 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 Marvell 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 "mvCommon.h"
 #include "mvOs.h"
 #include "ctrlEnv/mvCtrlEnvSpec.h"
 #include "mvCesa.h"
 #include "mvCesaRegs.h"

 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
 	TBL_TERM
 };

 static MV_STATUS cesaWinOverlapDetect(MV_U8 chan, MV_U32 winNum, MV_ADDR_WIN *pAddrWin);
 static MV_STATUS mvCesaTdmaWinRead(MV_U8 chan, MV_U32 winNum, MV_UNIT_WIN_INFO *pDecWin);
 static MV_STATUS mvCesaTdmaWinWrite(MV_U8 chan, MV_U32 winNum, MV_UNIT_WIN_INFO *pDecWin);

 /*******************************************************************************
 * mvCesaTdmaWinRead.
 *
 * DESCRIPTION:
 *       Read TDMA target address window.
 *
 * INPUT:
 *	chan - Channel ID.
 *       winNum - TDMA target address decode window number.
 *
 * OUTPUT:
 *       pDecWin - TDMA target window data structure.
 *
 * RETURN:
 *	MV_BAD_PARAM if winNum is invalid.
 *	MV_ERROR otherwise.
 *
 *******************************************************************************/
 static MV_STATUS mvCesaTdmaWinRead(MV_U8 chan, MV_U32 winNum, MV_UNIT_WIN_INFO *pDecWin)
 {
 	MV_U32 sizeReg, baseReg;
 	MV_U32 size;

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

 	baseReg = MV_REG_READ(MV_CESA_TDMA_BASE_ADDR_REG(chan, winNum));
 	sizeReg = MV_REG_READ(MV_CESA_TDMA_WIN_CTRL_REG(chan, winNum));

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

 		/* Extract window parameters from registers */
 		pDecWin->targetId = (sizeReg & MV_CESA_TDMA_WIN_TARGET_MASK) >> MV_CESA_TDMA_WIN_TARGET_OFFSET;
 		pDecWin->attrib = (sizeReg & MV_CESA_TDMA_WIN_ATTR_MASK) >> MV_CESA_TDMA_WIN_ATTR_OFFSET;

 		size = (sizeReg & MV_CESA_TDMA_WIN_SIZE_MASK) >> MV_CESA_TDMA_WIN_SIZE_OFFSET;
 		pDecWin->addrWin.size = (size + 1) * (1 << MV_CESA_TDMA_WIN_SIZE_OFFSET);
 		pDecWin->addrWin.baseLow = (baseReg & MV_CESA_TDMA_WIN_BASE_MASK);
 		pDecWin->addrWin.baseHigh = 0;
 	} else {
 		pDecWin->enable = MV_FALSE;
 	}
 	return MV_OK;
 }

 /*******************************************************************************
 * mvCesaTdmaWinWrite
 *
 * DESCRIPTION:
 *	This function writes the address decoding registers according to the
 *	given window configuration.
 *
 * INPUT:
 *	chan - Channel ID.
 *       pAddrDecWin - CESA TDMA target window data structure.
 *
 * OUTPUT:
 *       None.
 *
 * RETURN:
 *       MV_OK on success,
 *	MV_BAD_PARAM if winNum is invalid or size is not a power of 2.
 *	MV_ERROR otherwise.
 *
 *******************************************************************************/
 static MV_STATUS mvCesaTdmaWinWrite(MV_U8 chan, MV_U32 winNum, MV_UNIT_WIN_INFO *pDecWin)
 {
 	MV_U32 sizeReg, baseReg;
 	MV_U32 size;

 	/* 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(chan, winNum, &pDecWin->addrWin)) {
 		mvOsPrintf("%s: ERR. Window %d overlap\n", __func__, 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.\n"
 			   "Address 0x%08x is unaligned to size 0x%x.\n",
 			   winNum, pDecWin->addrWin.baseLow, pDecWin->addrWin.size);
 		return MV_ERROR;
 	}

 	if (!MV_IS_POWER_OF_2(pDecWin->addrWin.size)) {
 		mvOsPrintf("mvCesaTdmaWinWrite: Error setting CESA window %d. "
 			   "Window size is not a power to 2.", winNum);
 		return MV_BAD_PARAM;
 	}

 	size = (pDecWin->addrWin.size / (1 << MV_CESA_TDMA_WIN_SIZE_OFFSET)) - 1;

 	/* set Size, Attributes and TargetID */
 	sizeReg = (((pDecWin->targetId << MV_CESA_TDMA_WIN_TARGET_OFFSET) & MV_CESA_TDMA_WIN_TARGET_MASK) |
 		   ((pDecWin->attrib << MV_CESA_TDMA_WIN_ATTR_OFFSET) & MV_CESA_TDMA_WIN_ATTR_MASK) |
 		   ((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 = (pDecWin->addrWin.baseLow & MV_CESA_TDMA_WIN_BASE_MASK);

 	MV_REG_WRITE(MV_CESA_TDMA_WIN_CTRL_REG(chan, winNum), sizeReg);
 	MV_REG_WRITE(MV_CESA_TDMA_BASE_ADDR_REG(chan, winNum), baseReg);

 	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:
 * 	chan	    - Channel ID
 *       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_U8 chan, MV_U32 winNum, MV_ADDR_WIN *pAddrWin)
 {
 	MV_U32 winNumIndex;
 	MV_UNIT_WIN_INFO 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 != mvCesaTdmaWinRead(chan, winNumIndex, &addrDecWin)) {
 			mvOsPrintf("%s: ERR. TargetWinGet failed\n", __func__);
 			return MV_ERROR;
 		}

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

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

 MV_STATUS mvCesaTdmaWinInit(MV_U8 chan, MV_UNIT_WIN_INFO *addrWinMap)
 {
 	MV_U32 winNum;
 	MV_UNIT_WIN_INFO *addrDecWin;
 	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(chan, 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)) {

 		addrDecWin = &addrWinMap[tdmaAddrDecPrioTable[winPrioIndex]];
 		if (addrDecWin->enable == MV_TRUE) {
 			if (MV_OK != mvCesaTdmaWinWrite(chan, winNum, addrDecWin)) {
 				mvOsPrintf("mvCesaTdmaWinSet FAILED: winNum=%d\n", winNum);
 				return MV_ERROR;
 			}
 			winNum++;
 		}
 		winPrioIndex++;
 	}
 	return MV_OK;
 }
	/*******************************************************************************
	Copyright (C) Marvell International Ltd. and its affiliates

	This software file (the "File") is owned and distributed by Marvell
	International Ltd. and/or its affiliates ("Marvell") under the following
	alternative licensing terms. Once you have made an election to distribute the
	File under one of the following license alternatives, please (i) delete this
	introductory statement regarding license alternatives, (ii) delete the two
	license alternatives that you have not elected to use and (iii) preserve the
	Marvell copyright notice above.

	********************************************************************************
	Marvell Commercial License Option

	If you received this File from Marvell and you have entered into a commercial
	license agreement (a "Commercial License") with Marvell, the File is licensed
	to you under the terms of the applicable Commercial License.

	********************************************************************************
	Marvell GPL License Option

	If you received this File from Marvell, you may opt to use, redistribute and/or
	modify this File in accordance with the terms and conditions of the General
	Public License Version 2, June 1991 (the "GPL License"), a copy of which is
	available along with the File in the license.txt file or by writing to the Free
	Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
	on the worldwide web at http://www.gnu.org/licenses/gpl.txt.

	THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
	WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
	DISCLAIMED. The GPL License provides additional details about this warranty
	disclaimer.
	********************************************************************************
	Marvell BSD License Option

	If you received this File from Marvell, you may opt to use, redistribute and/or
	modify this File under the following licensing terms.
	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 Marvell 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 "mvCommon.h"
	#include "mvOs.h"
	#include "ctrlEnv/mvCtrlEnvSpec.h"
	#include "mvCesa.h"
	#include "mvCesaRegs.h"

	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
	TBL_TERM
	};

	static MV_STATUS cesaWinOverlapDetect(MV_U8 chan, MV_U32 winNum, MV_ADDR_WIN *pAddrWin);
	static MV_STATUS mvCesaTdmaWinRead(MV_U8 chan, MV_U32 winNum, MV_UNIT_WIN_INFO *pDecWin);
	static MV_STATUS mvCesaTdmaWinWrite(MV_U8 chan, MV_U32 winNum, MV_UNIT_WIN_INFO *pDecWin);

	/*******************************************************************************
	* mvCesaTdmaWinRead.
	*
	* DESCRIPTION:
	* Read TDMA target address window.
	*
	* INPUT:
	* chan - Channel ID.
	* winNum - TDMA target address decode window number.
	*
	* OUTPUT:
	* pDecWin - TDMA target window data structure.
	*
	* RETURN:
	* MV_BAD_PARAM if winNum is invalid.
	* MV_ERROR otherwise.
	*
	*******************************************************************************/
	static MV_STATUS mvCesaTdmaWinRead(MV_U8 chan, MV_U32 winNum, MV_UNIT_WIN_INFO *pDecWin)
	{
	MV_U32 sizeReg, baseReg;
	MV_U32 size;

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

	baseReg = MV_REG_READ(MV_CESA_TDMA_BASE_ADDR_REG(chan, winNum));
	sizeReg = MV_REG_READ(MV_CESA_TDMA_WIN_CTRL_REG(chan, winNum));

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

	/* Extract window parameters from registers */
	pDecWin->targetId = (sizeReg & MV_CESA_TDMA_WIN_TARGET_MASK) >> MV_CESA_TDMA_WIN_TARGET_OFFSET;
	pDecWin->attrib = (sizeReg & MV_CESA_TDMA_WIN_ATTR_MASK) >> MV_CESA_TDMA_WIN_ATTR_OFFSET;

	size = (sizeReg & MV_CESA_TDMA_WIN_SIZE_MASK) >> MV_CESA_TDMA_WIN_SIZE_OFFSET;
	pDecWin->addrWin.size = (size + 1) * (1 << MV_CESA_TDMA_WIN_SIZE_OFFSET);
	pDecWin->addrWin.baseLow = (baseReg & MV_CESA_TDMA_WIN_BASE_MASK);
	pDecWin->addrWin.baseHigh = 0;
	} else {
	pDecWin->enable = MV_FALSE;
	}
	return MV_OK;
	}

	/*******************************************************************************
	* mvCesaTdmaWinWrite
	*
	* DESCRIPTION:
	* This function writes the address decoding registers according to the
	* given window configuration.
	*
	* INPUT:
	* chan - Channel ID.
	* pAddrDecWin - CESA TDMA target window data structure.
	*
	* OUTPUT:
	* None.
	*
	* RETURN:
	* MV_OK on success,
	* MV_BAD_PARAM if winNum is invalid or size is not a power of 2.
	* MV_ERROR otherwise.
	*
	*******************************************************************************/
	static MV_STATUS mvCesaTdmaWinWrite(MV_U8 chan, MV_U32 winNum, MV_UNIT_WIN_INFO *pDecWin)
	{
	MV_U32 sizeReg, baseReg;
	MV_U32 size;

	/* 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(chan, winNum, &pDecWin->addrWin)) {
	mvOsPrintf("%s: ERR. Window %d overlap\n", __func__, 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.\n"
	"Address 0x%08x is unaligned to size 0x%x.\n",
	winNum, pDecWin->addrWin.baseLow, pDecWin->addrWin.size);
	return MV_ERROR;
	}

	if (!MV_IS_POWER_OF_2(pDecWin->addrWin.size)) {
	mvOsPrintf("mvCesaTdmaWinWrite: Error setting CESA window %d. "
	"Window size is not a power to 2.", winNum);
	return MV_BAD_PARAM;
	}

	size = (pDecWin->addrWin.size / (1 << MV_CESA_TDMA_WIN_SIZE_OFFSET)) - 1;

	/* set Size, Attributes and TargetID */
	sizeReg = (((pDecWin->targetId << MV_CESA_TDMA_WIN_TARGET_OFFSET) & MV_CESA_TDMA_WIN_TARGET_MASK) \|
	((pDecWin->attrib << MV_CESA_TDMA_WIN_ATTR_OFFSET) & MV_CESA_TDMA_WIN_ATTR_MASK) \|
	((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 = (pDecWin->addrWin.baseLow & MV_CESA_TDMA_WIN_BASE_MASK);

	MV_REG_WRITE(MV_CESA_TDMA_WIN_CTRL_REG(chan, winNum), sizeReg);
	MV_REG_WRITE(MV_CESA_TDMA_BASE_ADDR_REG(chan, winNum), baseReg);

	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:
	* chan - Channel ID
	* 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_U8 chan, MV_U32 winNum, MV_ADDR_WIN *pAddrWin)
	{
	MV_U32 winNumIndex;
	MV_UNIT_WIN_INFO 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 != mvCesaTdmaWinRead(chan, winNumIndex, &addrDecWin)) {
	mvOsPrintf("%s: ERR. TargetWinGet failed\n", __func__);
	return MV_ERROR;
	}

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

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

	MV_STATUS mvCesaTdmaWinInit(MV_U8 chan, MV_UNIT_WIN_INFO *addrWinMap)
	{
	MV_U32 winNum;
	MV_UNIT_WIN_INFO *addrDecWin;
	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(chan, 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)) {

	addrDecWin = &addrWinMap[tdmaAddrDecPrioTable[winPrioIndex]];
	if (addrDecWin->enable == MV_TRUE) {
	if (MV_OK != mvCesaTdmaWinWrite(chan, winNum, addrDecWin)) {
	mvOsPrintf("mvCesaTdmaWinSet FAILED: winNum=%d\n", winNum);
	return MV_ERROR;
	}
	winNum++;
	}
	winPrioIndex++;
	}
	return MV_OK;
	}