| 1 | /******************************************************************************* |
| 2 | Copyright (C) Marvell International Ltd. and its affiliates |
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| 24 | Public License Version 2, June 1991 (the "GPL License"), a copy of which is |
| 25 | available along with the File in the license.txt file or by writing to the Free |
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| 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 | |
| 79 | static 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 | *******************************************************************************/ |
| 98 | MV_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 | *******************************************************************************/ |
| 190 | MV_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 | *******************************************************************************/ |
| 251 | MV_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 | *******************************************************************************/ |
| 311 | static 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 | |
