--- /dev/null
+/*******************************************************************************
+Copyright (C) Marvell International Ltd. and its affiliates
+
+This software file (the "File") is owned and distributed by Marvell
+International Ltd. and/or its affiliates ("Marvell") under the following
+alternative licensing terms. Once you have made an election to distribute the
+File under one of the following license alternatives, please (i) delete this
+introductory statement regarding license alternatives, (ii) delete the two
+license alternatives that you have not elected to use and (iii) preserve the
+Marvell copyright notice above.
+
+********************************************************************************
+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.
+
+********************************************************************************
+Marvell GPL License Option
+
+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
+Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
+on the worldwide web at http://www.gnu.org/licenses/gpl.txt.
+
+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
+disclaimer.
+********************************************************************************
+Marvell BSD License Option
+
+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:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+ * 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.
+
+ * 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.
+
+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
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(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;
+}
+
projects / openwrt / svn-archive / archive.git / blobdiff