target/linux/generic/files/crypto/ocf/kirkwood/mvHal/kw_family/ctrlEnv/sys/mvSysDram.c

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  51
  52 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  53 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  54 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  55 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  56 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  57 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  58 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  59 ANY 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
  61 SOFTWARE, 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
  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