| /******************************************************************************* |
| 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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| ******************************************************************************** |
| 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. |
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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 |
| 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 |
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| 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 |
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| ******************************************************************************** |
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| 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: |
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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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| * 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. |
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| * 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. |
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| 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 |
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| (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| *******************************************************************************/ |
| |
| |
| /* includes */ |
| |
| #include "ddr2/mvDramIf.h" |
| #include "ctrlEnv/sys/mvCpuIf.h" |
| #include "ctrlEnv/sys/mvSysDram.h" |
| |
| /* #define MV_DEBUG */ |
| #ifdef MV_DEBUG |
| #define DB(x) x |
| #else |
| #define DB(x) |
| #endif |
| |
| static MV_BOOL sdramIfWinOverlap(MV_TARGET target, MV_ADDR_WIN *pAddrWin); |
| |
| /******************************************************************************* |
| * mvDramIfWinSet - Set DRAM interface address decode window |
| * |
| * DESCRIPTION: |
| * This function sets DRAM interface address decode window. |
| * |
| * INPUT: |
| * target - System target. Use only SDRAM targets. |
| * pAddrDecWin - SDRAM address window structure. |
| * |
| * OUTPUT: |
| * None |
| * |
| * RETURN: |
| * MV_BAD_PARAM if parameters are invalid or window is invalid, MV_OK |
| * otherwise. |
| *******************************************************************************/ |
| MV_STATUS mvDramIfWinSet(MV_TARGET target, MV_DRAM_DEC_WIN *pAddrDecWin) |
| { |
| MV_U32 baseReg=0,sizeReg=0; |
| MV_U32 baseToReg=0 , sizeToReg=0; |
| |
| /* Check parameters */ |
| if (!MV_TARGET_IS_DRAM(target)) |
| { |
| mvOsPrintf("mvDramIfWinSet: target %d is not SDRAM\n", target); |
| return MV_BAD_PARAM; |
| } |
| |
| /* Check if the requested window overlaps with current enabled windows */ |
| if (MV_TRUE == sdramIfWinOverlap(target, &pAddrDecWin->addrWin)) |
| { |
| mvOsPrintf("mvDramIfWinSet: ERR. Target %d overlaps\n", target); |
| return MV_BAD_PARAM; |
| } |
| |
| /* check if address is aligned to the size */ |
| if(MV_IS_NOT_ALIGN(pAddrDecWin->addrWin.baseLow, pAddrDecWin->addrWin.size)) |
| { |
| mvOsPrintf("mvDramIfWinSet:Error setting DRAM interface window %d."\ |
| "\nAddress 0x%08x is unaligned to size 0x%x.\n", |
| target, |
| pAddrDecWin->addrWin.baseLow, |
| pAddrDecWin->addrWin.size); |
| return MV_ERROR; |
| } |
| |
| /* read base register*/ |
| baseReg = MV_REG_READ(SDRAM_BASE_ADDR_REG(0,target)); |
| |
| /* read size register */ |
| sizeReg = MV_REG_READ(SDRAM_SIZE_REG(0,target)); |
| |
| /* BaseLow[31:16] => base register [31:16] */ |
| baseToReg = pAddrDecWin->addrWin.baseLow & SCBAR_BASE_MASK; |
| |
| /* Write to address decode Base Address Register */ |
| baseReg &= ~SCBAR_BASE_MASK; |
| baseReg |= baseToReg; |
| |
| /* Translate the given window size to register format */ |
| sizeToReg = ctrlSizeToReg(pAddrDecWin->addrWin.size, SCSR_SIZE_ALIGNMENT); |
| |
| /* Size parameter validity check. */ |
| if (-1 == sizeToReg) |
| { |
| mvOsPrintf("mvCtrlAddrDecToReg: ERR. Win %d size invalid.\n",target); |
| return MV_BAD_PARAM; |
| } |
| |
| /* set size */ |
| sizeReg &= ~SCSR_SIZE_MASK; |
| /* Size is located at upper 16 bits */ |
| sizeReg |= (sizeToReg << SCSR_SIZE_OFFS); |
| |
| /* enable/Disable */ |
| if (MV_TRUE == pAddrDecWin->enable) |
| { |
| sizeReg |= SCSR_WIN_EN; |
| } |
| else |
| { |
| sizeReg &= ~SCSR_WIN_EN; |
| } |
| |
| /* 3) Write to address decode Base Address Register */ |
| MV_REG_WRITE(SDRAM_BASE_ADDR_REG(0,target), baseReg); |
| |
| /* Write to address decode Size Register */ |
| MV_REG_WRITE(SDRAM_SIZE_REG(0,target), sizeReg); |
| |
| return MV_OK; |
| } |
| /******************************************************************************* |
| * mvDramIfWinGet - Get DRAM interface address decode window |
| * |
| * DESCRIPTION: |
| * This function gets DRAM interface address decode window. |
| * |
| * INPUT: |
| * target - System target. Use only SDRAM targets. |
| * |
| * OUTPUT: |
| * pAddrDecWin - SDRAM address window structure. |
| * |
| * RETURN: |
| * MV_BAD_PARAM if parameters are invalid or window is invalid, MV_OK |
| * otherwise. |
| *******************************************************************************/ |
| MV_STATUS mvDramIfWinGet(MV_TARGET target, MV_DRAM_DEC_WIN *pAddrDecWin) |
| { |
| MV_U32 baseReg,sizeReg; |
| MV_U32 sizeRegVal; |
| /* Check parameters */ |
| if (!MV_TARGET_IS_DRAM(target)) |
| { |
| mvOsPrintf("mvDramIfWinGet: target %d is Illigal\n", target); |
| return MV_ERROR; |
| } |
| |
| /* Read base and size registers */ |
| sizeReg = MV_REG_READ(SDRAM_SIZE_REG(0,target)); |
| baseReg = MV_REG_READ(SDRAM_BASE_ADDR_REG(0,target)); |
| |
| sizeRegVal = (sizeReg & SCSR_SIZE_MASK) >> SCSR_SIZE_OFFS; |
| |
| pAddrDecWin->addrWin.size = ctrlRegToSize(sizeRegVal, |
| SCSR_SIZE_ALIGNMENT); |
| |
| /* Check if ctrlRegToSize returned OK */ |
| if (-1 == pAddrDecWin->addrWin.size) |
| { |
| mvOsPrintf("mvDramIfWinGet: size of target %d is Illigal\n", target); |
| return MV_ERROR; |
| } |
| |
| /* Extract base address */ |
| /* Base register [31:16] ==> baseLow[31:16] */ |
| pAddrDecWin->addrWin.baseLow = baseReg & SCBAR_BASE_MASK; |
| |
| pAddrDecWin->addrWin.baseHigh = 0; |
| |
| |
| if (sizeReg & SCSR_WIN_EN) |
| { |
| pAddrDecWin->enable = MV_TRUE; |
| } |
| else |
| { |
| pAddrDecWin->enable = MV_FALSE; |
| } |
| |
| return MV_OK; |
| } |
| /******************************************************************************* |
| * mvDramIfWinEnable - Enable/Disable SDRAM address decode window |
| * |
| * DESCRIPTION: |
| * This function enable/Disable SDRAM address decode window. |
| * |
| * INPUT: |
| * target - System target. Use only SDRAM targets. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * MV_ERROR in case function parameter are invalid, MV_OK otherewise. |
| * |
| *******************************************************************************/ |
| MV_STATUS mvDramIfWinEnable(MV_TARGET target, MV_BOOL enable) |
| { |
| MV_DRAM_DEC_WIN addrDecWin; |
| |
| /* Check parameters */ |
| if (!MV_TARGET_IS_DRAM(target)) |
| { |
| mvOsPrintf("mvDramIfWinEnable: target %d is Illigal\n", target); |
| return MV_ERROR; |
| } |
| |
| if (enable == MV_TRUE) |
| { /* First check for overlap with other enabled windows */ |
| if (MV_OK != mvDramIfWinGet(target, &addrDecWin)) |
| { |
| mvOsPrintf("mvDramIfWinEnable:ERR. Getting target %d failed.\n", |
| target); |
| return MV_ERROR; |
| } |
| /* Check for overlapping */ |
| if (MV_FALSE == sdramIfWinOverlap(target, &(addrDecWin.addrWin))) |
| { |
| /* No Overlap. Enable address decode winNum window */ |
| MV_REG_BIT_SET(SDRAM_SIZE_REG(0,target), SCSR_WIN_EN); |
| } |
| else |
| { /* Overlap detected */ |
| mvOsPrintf("mvDramIfWinEnable: ERR. Target %d overlap detect\n", |
| target); |
| return MV_ERROR; |
| } |
| } |
| else |
| { /* Disable address decode winNum window */ |
| MV_REG_BIT_RESET(SDRAM_SIZE_REG(0, target), SCSR_WIN_EN); |
| } |
| |
| return MV_OK; |
| } |
| |
| /******************************************************************************* |
| * sdramIfWinOverlap - Check if an address window overlap an SDRAM address window |
| * |
| * DESCRIPTION: |
| * This function scan each SDRAM address decode window to test if it |
| * overlapps the given address windoow |
| * |
| * INPUT: |
| * target - SDRAM target where the function skips checking. |
| * pAddrDecWin - The tested address window for overlapping with |
| * SDRAM windows. |
| * |
| * OUTPUT: |
| * None. |
| * |
| * RETURN: |
| * MV_TRUE if the given address window overlaps any enabled address |
| * decode map, MV_FALSE otherwise. |
| * |
| *******************************************************************************/ |
| static MV_BOOL sdramIfWinOverlap(MV_TARGET target, MV_ADDR_WIN *pAddrWin) |
| { |
| MV_TARGET targetNum; |
| MV_DRAM_DEC_WIN addrDecWin; |
| |
| for(targetNum = SDRAM_CS0; targetNum < MV_DRAM_MAX_CS ; targetNum++) |
| { |
| /* don't check our winNum or illegal targets */ |
| if (targetNum == target) |
| { |
| continue; |
| } |
| |
| /* Get window parameters */ |
| if (MV_OK != mvDramIfWinGet(targetNum, &addrDecWin)) |
| { |
| mvOsPrintf("sdramIfWinOverlap: ERR. TargetWinGet failed\n"); |
| return MV_ERROR; |
| } |
| |
| /* Do not check disabled windows */ |
| if (MV_FALSE == addrDecWin.enable) |
| { |
| continue; |
| } |
| |
| if(MV_TRUE == ctrlWinOverlapTest(pAddrWin, &addrDecWin.addrWin)) |
| { |
| mvOsPrintf( |
| "sdramIfWinOverlap: Required target %d overlap winNum %d\n", |
| target, targetNum); |
| return MV_TRUE; |
| } |
| } |
| |
| return MV_FALSE; |
| } |
| |