1/******************************************************************************* 2Copyright (C) Marvell International Ltd. and its affiliates 3 4This software file (the "File") is owned and distributed by Marvell 5International Ltd. and/or its affiliates ("Marvell") under the following 6alternative licensing terms. Once you have made an election to distribute the 7File under one of the following license alternatives, please (i) delete this 8introductory statement regarding license alternatives, (ii) delete the two 9license alternatives that you have not elected to use and (iii) preserve the 10Marvell copyright notice above. 11 12******************************************************************************** 13Marvell Commercial License Option 14 15If you received this File from Marvell and you have entered into a commercial 16license agreement (a "Commercial License") with Marvell, the File is licensed 17to you under the terms of the applicable Commercial License. 18 19******************************************************************************** 20Marvell GPL License Option 21 22If you received this File from Marvell, you may opt to use, redistribute and/or 23modify this File in accordance with the terms and conditions of the General 24Public License Version 2, June 1991 (the "GPL License"), a copy of which is 25available along with the File in the license.txt file or by writing to the Free 26Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or 27on the worldwide web at http://www.gnu.org/licenses/gpl.txt. 28 29THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED 30WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY 31DISCLAIMED. The GPL License provides additional details about this warranty 32disclaimer. 33******************************************************************************** 34Marvell BSD License Option 35 36If you received this File from Marvell, you may opt to use, redistribute and/or 37modify this File under the following licensing terms. 38Redistribution and use in source and binary forms, with or without modification, 39are permitted provided that the following conditions are met: 40 41 * Redistributions of source code must retain the above copyright notice, 42 this list of conditions and the following disclaimer. 43 44 * Redistributions in binary form must reproduce the above copyright 45 notice, this list of conditions and the following disclaimer in the 46 documentation and/or other materials provided with the distribution. 47 48 * Neither the name of Marvell nor the names of its contributors may be 49 used to endorse or promote products derived from this software without 50 specific prior written permission. 51 52THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 53ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 54WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 55DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 56ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 57(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 58LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 59ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 61SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 63*******************************************************************************/ 64 65 66/* includes */ 67 68#include "ddr2/mvDramIf.h" 69#include "ctrlEnv/sys/mvCpuIf.h" 70#include "ctrlEnv/sys/mvSysDram.h" 71 72/* #define MV_DEBUG */ 73#ifdef MV_DEBUG 74#define DB(x) x 75#else 76#define DB(x) 77#endif 78 79static MV_BOOL sdramIfWinOverlap(MV_TARGET target, MV_ADDR_WIN *pAddrWin); 80 81/******************************************************************************* 82* mvDramIfWinSet - Set DRAM interface address decode window 83* 84* DESCRIPTION: 85* This function sets DRAM interface address decode window. 86* 87* INPUT: 88* target - System target. Use only SDRAM targets. 89* pAddrDecWin - SDRAM address window structure. 90* 91* OUTPUT: 92* None 93* 94* RETURN: 95* MV_BAD_PARAM if parameters are invalid or window is invalid, MV_OK 96* otherwise. 97*******************************************************************************/ 98MV_STATUS mvDramIfWinSet(MV_TARGET target, MV_DRAM_DEC_WIN *pAddrDecWin) 99{ 100 MV_U32 baseReg=0,sizeReg=0; 101 MV_U32 baseToReg=0 , sizeToReg=0; 102 103 /* Check parameters */ 104 if (!MV_TARGET_IS_DRAM(target)) 105 { 106 mvOsPrintf("mvDramIfWinSet: target %d is not SDRAM\n", target); 107 return MV_BAD_PARAM; 108 } 109 110 /* Check if the requested window overlaps with current enabled windows */ 111 if (MV_TRUE == sdramIfWinOverlap(target, &pAddrDecWin->addrWin)) 112 { 113 mvOsPrintf("mvDramIfWinSet: ERR. Target %d overlaps\n", target); 114 return MV_BAD_PARAM; 115 } 116 117 /* check if address is aligned to the size */ 118 if(MV_IS_NOT_ALIGN(pAddrDecWin->addrWin.baseLow, pAddrDecWin->addrWin.size)) 119 { 120 mvOsPrintf("mvDramIfWinSet:Error setting DRAM interface window %d."\ 121 "\nAddress 0x%08x is unaligned to size 0x%x.\n", 122 target, 123 pAddrDecWin->addrWin.baseLow, 124 pAddrDecWin->addrWin.size); 125 return MV_ERROR; 126 } 127 128 /* read base register*/ 129 baseReg = MV_REG_READ(SDRAM_BASE_ADDR_REG(0,target)); 130 131 /* read size register */ 132 sizeReg = MV_REG_READ(SDRAM_SIZE_REG(0,target)); 133 134 /* BaseLow[31:16] => base register [31:16] */ 135 baseToReg = pAddrDecWin->addrWin.baseLow & SCBAR_BASE_MASK; 136 137 /* Write to address decode Base Address Register */ 138 baseReg &= ~SCBAR_BASE_MASK; 139 baseReg |= baseToReg; 140 141 /* Translate the given window size to register format */ 142 sizeToReg = ctrlSizeToReg(pAddrDecWin->addrWin.size, SCSR_SIZE_ALIGNMENT); 143 144 /* Size parameter validity check. */ 145 if (-1 == sizeToReg) 146 { 147 mvOsPrintf("mvCtrlAddrDecToReg: ERR. Win %d size invalid.\n",target); 148 return MV_BAD_PARAM; 149 } 150 151 /* set size */ 152 sizeReg &= ~SCSR_SIZE_MASK; 153 /* Size is located at upper 16 bits */ 154 sizeReg |= (sizeToReg << SCSR_SIZE_OFFS); 155 156 /* enable/Disable */ 157 if (MV_TRUE == pAddrDecWin->enable) 158 { 159 sizeReg |= SCSR_WIN_EN; 160 } 161 else 162 { 163 sizeReg &= ~SCSR_WIN_EN; 164 } 165 166 /* 3) Write to address decode Base Address Register */ 167 MV_REG_WRITE(SDRAM_BASE_ADDR_REG(0,target), baseReg); 168 169 /* Write to address decode Size Register */ 170 MV_REG_WRITE(SDRAM_SIZE_REG(0,target), sizeReg); 171 172 return MV_OK; 173} 174/******************************************************************************* 175* mvDramIfWinGet - Get DRAM interface address decode window 176* 177* DESCRIPTION: 178* This function gets DRAM interface address decode window. 179* 180* INPUT: 181* target - System target. Use only SDRAM targets. 182* 183* OUTPUT: 184* pAddrDecWin - SDRAM address window structure. 185* 186* RETURN: 187* MV_BAD_PARAM if parameters are invalid or window is invalid, MV_OK 188* otherwise. 189*******************************************************************************/ 190MV_STATUS mvDramIfWinGet(MV_TARGET target, MV_DRAM_DEC_WIN *pAddrDecWin) 191{ 192 MV_U32 baseReg,sizeReg; 193 MV_U32 sizeRegVal; 194 /* Check parameters */ 195 if (!MV_TARGET_IS_DRAM(target)) 196 { 197 mvOsPrintf("mvDramIfWinGet: target %d is Illigal\n", target); 198 return MV_ERROR; 199 } 200 201 /* Read base and size registers */ 202 sizeReg = MV_REG_READ(SDRAM_SIZE_REG(0,target)); 203 baseReg = MV_REG_READ(SDRAM_BASE_ADDR_REG(0,target)); 204 205 sizeRegVal = (sizeReg & SCSR_SIZE_MASK) >> SCSR_SIZE_OFFS; 206 207 pAddrDecWin->addrWin.size = ctrlRegToSize(sizeRegVal, 208 SCSR_SIZE_ALIGNMENT); 209 210 /* Check if ctrlRegToSize returned OK */ 211 if (-1 == pAddrDecWin->addrWin.size) 212 { 213 mvOsPrintf("mvDramIfWinGet: size of target %d is Illigal\n", target); 214 return MV_ERROR; 215 } 216 217 /* Extract base address */ 218 /* Base register [31:16] ==> baseLow[31:16] */ 219 pAddrDecWin->addrWin.baseLow = baseReg & SCBAR_BASE_MASK; 220 221 pAddrDecWin->addrWin.baseHigh = 0; 222 223 224 if (sizeReg & SCSR_WIN_EN) 225 { 226 pAddrDecWin->enable = MV_TRUE; 227 } 228 else 229 { 230 pAddrDecWin->enable = MV_FALSE; 231 } 232 233 return MV_OK; 234} 235/******************************************************************************* 236* mvDramIfWinEnable - Enable/Disable SDRAM address decode window 237* 238* DESCRIPTION: 239* This function enable/Disable SDRAM address decode window. 240* 241* INPUT: 242* target - System target. Use only SDRAM targets. 243* 244* OUTPUT: 245* None. 246* 247* RETURN: 248* MV_ERROR in case function parameter are invalid, MV_OK otherewise. 249* 250*******************************************************************************/ 251MV_STATUS mvDramIfWinEnable(MV_TARGET target, MV_BOOL enable) 252{ 253 MV_DRAM_DEC_WIN addrDecWin; 254 255 /* Check parameters */ 256 if (!MV_TARGET_IS_DRAM(target)) 257 { 258 mvOsPrintf("mvDramIfWinEnable: target %d is Illigal\n", target); 259 return MV_ERROR; 260 } 261 262 if (enable == MV_TRUE) 263 { /* First check for overlap with other enabled windows */ 264 if (MV_OK != mvDramIfWinGet(target, &addrDecWin)) 265 { 266 mvOsPrintf("mvDramIfWinEnable:ERR. Getting target %d failed.\n", 267 target); 268 return MV_ERROR; 269 } 270 /* Check for overlapping */ 271 if (MV_FALSE == sdramIfWinOverlap(target, &(addrDecWin.addrWin))) 272 { 273 /* No Overlap. Enable address decode winNum window */ 274 MV_REG_BIT_SET(SDRAM_SIZE_REG(0,target), SCSR_WIN_EN); 275 } 276 else 277 { /* Overlap detected */ 278 mvOsPrintf("mvDramIfWinEnable: ERR. Target %d overlap detect\n", 279 target); 280 return MV_ERROR; 281 } 282 } 283 else 284 { /* Disable address decode winNum window */ 285 MV_REG_BIT_RESET(SDRAM_SIZE_REG(0, target), SCSR_WIN_EN); 286 } 287 288 return MV_OK; 289} 290 291/******************************************************************************* 292* sdramIfWinOverlap - Check if an address window overlap an SDRAM address window 293* 294* DESCRIPTION: 295* This function scan each SDRAM address decode window to test if it 296* overlapps the given address windoow 297* 298* INPUT: 299* target - SDRAM target where the function skips checking. 300* pAddrDecWin - The tested address window for overlapping with 301* SDRAM windows. 302* 303* OUTPUT: 304* None. 305* 306* RETURN: 307* MV_TRUE if the given address window overlaps any enabled address 308* decode map, MV_FALSE otherwise. 309* 310*******************************************************************************/ 311static MV_BOOL sdramIfWinOverlap(MV_TARGET target, MV_ADDR_WIN *pAddrWin) 312{ 313 MV_TARGET targetNum; 314 MV_DRAM_DEC_WIN addrDecWin; 315 316 for(targetNum = SDRAM_CS0; targetNum < MV_DRAM_MAX_CS ; targetNum++) 317 { 318 /* don't check our winNum or illegal targets */ 319 if (targetNum == target) 320 { 321 continue; 322 } 323 324 /* Get window parameters */ 325 if (MV_OK != mvDramIfWinGet(targetNum, &addrDecWin)) 326 { 327 mvOsPrintf("sdramIfWinOverlap: ERR. TargetWinGet failed\n"); 328 return MV_ERROR; 329 } 330 331 /* Do not check disabled windows */ 332 if (MV_FALSE == addrDecWin.enable) 333 { 334 continue; 335 } 336 337 if(MV_TRUE == ctrlWinOverlapTest(pAddrWin, &addrDecWin.addrWin)) 338 { 339 mvOsPrintf( 340 "sdramIfWinOverlap: Required target %d overlap winNum %d\n", 341 target, targetNum); 342 return MV_TRUE; 343 } 344 } 345 346 return MV_FALSE; 347} 348 349