349 lines
11 KiB
C
349 lines
11 KiB
C
/*******************************************************************************
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Copyright (C) Marvell International Ltd. and its affiliates
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This software file (the "File") is owned and distributed by Marvell
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International Ltd. and/or its affiliates ("Marvell") under the following
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alternative licensing terms. Once you have made an election to distribute the
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File under one of the following license alternatives, please (i) delete this
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introductory statement regarding license alternatives, (ii) delete the two
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license alternatives that you have not elected to use and (iii) preserve the
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Marvell copyright notice above.
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********************************************************************************
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Marvell Commercial License Option
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If you received this File from Marvell and you have entered into a commercial
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license agreement (a "Commercial License") with Marvell, the File is licensed
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to you under the terms of the applicable Commercial License.
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********************************************************************************
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Marvell GPL License Option
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If you received this File from Marvell, you may opt to use, redistribute and/or
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modify this File in accordance with the terms and conditions of the General
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Public License Version 2, June 1991 (the "GPL License"), a copy of which is
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available along with the File in the license.txt file or by writing to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
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on the worldwide web at http://www.gnu.org/licenses/gpl.txt.
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THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
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WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
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DISCLAIMED. The GPL License provides additional details about this warranty
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disclaimer.
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********************************************************************************
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Marvell BSD License Option
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If you received this File from Marvell, you may opt to use, redistribute and/or
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modify this File under the following licensing terms.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Marvell nor the names of its contributors may be
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used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*******************************************************************************/
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/* includes */
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#include "ddr2/mvDramIf.h"
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#include "ctrlEnv/sys/mvCpuIf.h"
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#include "ctrlEnv/sys/mvSysDram.h"
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/* #define MV_DEBUG */
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#ifdef MV_DEBUG
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#define DB(x) x
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#else
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#define DB(x)
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#endif
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static MV_BOOL sdramIfWinOverlap(MV_TARGET target, MV_ADDR_WIN *pAddrWin);
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/*******************************************************************************
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* mvDramIfWinSet - Set DRAM interface address decode window
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*
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* DESCRIPTION:
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* This function sets DRAM interface address decode window.
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*
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* INPUT:
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* target - System target. Use only SDRAM targets.
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* pAddrDecWin - SDRAM address window structure.
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*
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* OUTPUT:
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* None
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*
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* RETURN:
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* MV_BAD_PARAM if parameters are invalid or window is invalid, MV_OK
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* otherwise.
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*******************************************************************************/
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MV_STATUS mvDramIfWinSet(MV_TARGET target, MV_DRAM_DEC_WIN *pAddrDecWin)
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{
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MV_U32 baseReg=0,sizeReg=0;
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MV_U32 baseToReg=0 , sizeToReg=0;
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/* Check parameters */
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if (!MV_TARGET_IS_DRAM(target))
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{
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mvOsPrintf("mvDramIfWinSet: target %d is not SDRAM\n", target);
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return MV_BAD_PARAM;
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}
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/* Check if the requested window overlaps with current enabled windows */
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if (MV_TRUE == sdramIfWinOverlap(target, &pAddrDecWin->addrWin))
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{
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mvOsPrintf("mvDramIfWinSet: ERR. Target %d overlaps\n", target);
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return MV_BAD_PARAM;
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}
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/* check if address is aligned to the size */
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if(MV_IS_NOT_ALIGN(pAddrDecWin->addrWin.baseLow, pAddrDecWin->addrWin.size))
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{
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mvOsPrintf("mvDramIfWinSet:Error setting DRAM interface window %d."\
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"\nAddress 0x%08x is unaligned to size 0x%x.\n",
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target,
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pAddrDecWin->addrWin.baseLow,
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pAddrDecWin->addrWin.size);
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return MV_ERROR;
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}
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/* read base register*/
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baseReg = MV_REG_READ(SDRAM_BASE_ADDR_REG(0,target));
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/* read size register */
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sizeReg = MV_REG_READ(SDRAM_SIZE_REG(0,target));
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/* BaseLow[31:16] => base register [31:16] */
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baseToReg = pAddrDecWin->addrWin.baseLow & SCBAR_BASE_MASK;
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/* Write to address decode Base Address Register */
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baseReg &= ~SCBAR_BASE_MASK;
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baseReg |= baseToReg;
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/* Translate the given window size to register format */
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sizeToReg = ctrlSizeToReg(pAddrDecWin->addrWin.size, SCSR_SIZE_ALIGNMENT);
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/* Size parameter validity check. */
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if (-1 == sizeToReg)
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{
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mvOsPrintf("mvCtrlAddrDecToReg: ERR. Win %d size invalid.\n",target);
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return MV_BAD_PARAM;
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}
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/* set size */
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sizeReg &= ~SCSR_SIZE_MASK;
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/* Size is located at upper 16 bits */
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sizeReg |= (sizeToReg << SCSR_SIZE_OFFS);
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/* enable/Disable */
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if (MV_TRUE == pAddrDecWin->enable)
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{
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sizeReg |= SCSR_WIN_EN;
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}
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else
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{
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sizeReg &= ~SCSR_WIN_EN;
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}
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/* 3) Write to address decode Base Address Register */
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MV_REG_WRITE(SDRAM_BASE_ADDR_REG(0,target), baseReg);
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/* Write to address decode Size Register */
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MV_REG_WRITE(SDRAM_SIZE_REG(0,target), sizeReg);
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return MV_OK;
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}
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/*******************************************************************************
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* mvDramIfWinGet - Get DRAM interface address decode window
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*
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* DESCRIPTION:
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* This function gets DRAM interface address decode window.
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*
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* INPUT:
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* target - System target. Use only SDRAM targets.
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*
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* OUTPUT:
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* pAddrDecWin - SDRAM address window structure.
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*
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* RETURN:
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* MV_BAD_PARAM if parameters are invalid or window is invalid, MV_OK
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* otherwise.
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*******************************************************************************/
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MV_STATUS mvDramIfWinGet(MV_TARGET target, MV_DRAM_DEC_WIN *pAddrDecWin)
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{
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MV_U32 baseReg,sizeReg;
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MV_U32 sizeRegVal;
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/* Check parameters */
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if (!MV_TARGET_IS_DRAM(target))
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{
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mvOsPrintf("mvDramIfWinGet: target %d is Illigal\n", target);
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return MV_ERROR;
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}
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/* Read base and size registers */
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sizeReg = MV_REG_READ(SDRAM_SIZE_REG(0,target));
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baseReg = MV_REG_READ(SDRAM_BASE_ADDR_REG(0,target));
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sizeRegVal = (sizeReg & SCSR_SIZE_MASK) >> SCSR_SIZE_OFFS;
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pAddrDecWin->addrWin.size = ctrlRegToSize(sizeRegVal,
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SCSR_SIZE_ALIGNMENT);
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/* Check if ctrlRegToSize returned OK */
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if (-1 == pAddrDecWin->addrWin.size)
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{
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mvOsPrintf("mvDramIfWinGet: size of target %d is Illigal\n", target);
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return MV_ERROR;
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}
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/* Extract base address */
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/* Base register [31:16] ==> baseLow[31:16] */
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pAddrDecWin->addrWin.baseLow = baseReg & SCBAR_BASE_MASK;
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pAddrDecWin->addrWin.baseHigh = 0;
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if (sizeReg & SCSR_WIN_EN)
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{
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pAddrDecWin->enable = MV_TRUE;
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}
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else
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{
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pAddrDecWin->enable = MV_FALSE;
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}
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return MV_OK;
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}
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/*******************************************************************************
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* mvDramIfWinEnable - Enable/Disable SDRAM address decode window
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*
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* DESCRIPTION:
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* This function enable/Disable SDRAM address decode window.
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*
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* INPUT:
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* target - System target. Use only SDRAM targets.
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*
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* OUTPUT:
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* None.
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*
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* RETURN:
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* MV_ERROR in case function parameter are invalid, MV_OK otherewise.
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*
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*******************************************************************************/
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MV_STATUS mvDramIfWinEnable(MV_TARGET target, MV_BOOL enable)
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{
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MV_DRAM_DEC_WIN addrDecWin;
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/* Check parameters */
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if (!MV_TARGET_IS_DRAM(target))
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{
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mvOsPrintf("mvDramIfWinEnable: target %d is Illigal\n", target);
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return MV_ERROR;
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}
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if (enable == MV_TRUE)
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{ /* First check for overlap with other enabled windows */
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if (MV_OK != mvDramIfWinGet(target, &addrDecWin))
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{
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mvOsPrintf("mvDramIfWinEnable:ERR. Getting target %d failed.\n",
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target);
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return MV_ERROR;
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}
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/* Check for overlapping */
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if (MV_FALSE == sdramIfWinOverlap(target, &(addrDecWin.addrWin)))
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{
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/* No Overlap. Enable address decode winNum window */
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MV_REG_BIT_SET(SDRAM_SIZE_REG(0,target), SCSR_WIN_EN);
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}
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else
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{ /* Overlap detected */
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mvOsPrintf("mvDramIfWinEnable: ERR. Target %d overlap detect\n",
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target);
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return MV_ERROR;
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}
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}
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else
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{ /* Disable address decode winNum window */
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MV_REG_BIT_RESET(SDRAM_SIZE_REG(0, target), SCSR_WIN_EN);
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}
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return MV_OK;
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}
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/*******************************************************************************
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* sdramIfWinOverlap - Check if an address window overlap an SDRAM address window
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*
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* DESCRIPTION:
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* This function scan each SDRAM address decode window to test if it
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* overlapps the given address windoow
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*
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* INPUT:
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* target - SDRAM target where the function skips checking.
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* pAddrDecWin - The tested address window for overlapping with
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* SDRAM windows.
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*
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* OUTPUT:
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* None.
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*
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* RETURN:
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* MV_TRUE if the given address window overlaps any enabled address
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* decode map, MV_FALSE otherwise.
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*
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*******************************************************************************/
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static MV_BOOL sdramIfWinOverlap(MV_TARGET target, MV_ADDR_WIN *pAddrWin)
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{
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MV_TARGET targetNum;
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MV_DRAM_DEC_WIN addrDecWin;
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for(targetNum = SDRAM_CS0; targetNum < MV_DRAM_MAX_CS ; targetNum++)
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{
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/* don't check our winNum or illegal targets */
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if (targetNum == target)
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{
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continue;
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}
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/* Get window parameters */
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if (MV_OK != mvDramIfWinGet(targetNum, &addrDecWin))
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{
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mvOsPrintf("sdramIfWinOverlap: ERR. TargetWinGet failed\n");
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return MV_ERROR;
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}
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/* Do not check disabled windows */
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if (MV_FALSE == addrDecWin.enable)
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{
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continue;
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}
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if(MV_TRUE == ctrlWinOverlapTest(pAddrWin, &addrDecWin.addrWin))
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{
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mvOsPrintf(
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"sdramIfWinOverlap: Required target %d overlap winNum %d\n",
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target, targetNum);
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return MV_TRUE;
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}
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}
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return MV_FALSE;
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}
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