1 files changed, 683 insertions, 0 deletions

diff --git a/drivers/staging/spectra/lld_mtd.c b/drivers/staging/spectra/lld_mtd.c
new file mode 100644
index 00000000000..2bd34662beb
--- /dev/null
+++ b/drivers/staging/spectra/lld_mtd.c
@@ -0,0 +1,683 @@
+/*
+ * NAND Flash Controller Device Driver
+ * Copyright (c) 2009, Intel Corporation and its suppliers.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <linux/fs.h>
+#include <linux/slab.h>
+#include <linux/mtd/mtd.h>
+#include "flash.h"
+#include "ffsdefs.h"
+#include "lld_emu.h"
+#include "lld.h"
+#if CMD_DMA
+#include "lld_cdma.h"
+u32 totalUsedBanks;
+u32 valid_banks[MAX_CHANS];
+#endif
+
+#define GLOB_LLD_PAGES           64
+#define GLOB_LLD_PAGE_SIZE       (512+16)
+#define GLOB_LLD_PAGE_DATA_SIZE  512
+#define GLOB_LLD_BLOCKS          2048
+
+static struct mtd_info *spectra_mtd;
+static int mtddev = -1;
+module_param(mtddev, int, 0);
+
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     mtd_Flash_Init
+* Inputs:       none
+* Outputs:      PASS=0 (notice 0=ok here)
+* Description:  Creates & initializes the flash RAM array.
+*
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+u16 mtd_Flash_Init(void)
+{
+        if (mtddev == -1) {
+                printk(KERN_ERR "No MTD device specified. Give mtddev parameter\n");
+                return FAIL;
+        }
+
+        spectra_mtd = get_mtd_device(NULL, mtddev);
+        if (!spectra_mtd) {
+                printk(KERN_ERR "Failed to obtain MTD device #%d\n", mtddev);
+                return FAIL;
+        }
+
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+
+        return PASS;
+}
+
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     mtd_Flash_Release
+* Inputs:       none
+* Outputs:      PASS=0 (notice 0=ok here)
+* Description:          Releases the flash.
+*
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+int mtd_Flash_Release(void)
+{
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+        if (!spectra_mtd)
+                return PASS;
+
+        put_mtd_device(spectra_mtd);
+        spectra_mtd = NULL;
+
+        return PASS;
+}
+
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     mtd_Read_Device_ID
+* Inputs:       none
+* Outputs:      PASS=1 FAIL=0
+* Description:  Reads the info from the controller registers.
+*               Sets up DeviceInfo structure with device parameters
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+
+u16 mtd_Read_Device_ID(void)
+{
+        uint64_t tmp;
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+
+        if (!spectra_mtd)
+                return FAIL;
+
+        DeviceInfo.wDeviceMaker = 0;
+        DeviceInfo.wDeviceType = 8;
+        DeviceInfo.wSpectraStartBlock = SPECTRA_START_BLOCK;
+        tmp = spectra_mtd->size;
+        do_div(tmp, spectra_mtd->erasesize);
+        DeviceInfo.wTotalBlocks = tmp;
+        DeviceInfo.wSpectraEndBlock = DeviceInfo.wTotalBlocks - 1;
+        DeviceInfo.wPagesPerBlock = spectra_mtd->erasesize / spectra_mtd->writesize;
+        DeviceInfo.wPageSize = spectra_mtd->writesize + spectra_mtd->oobsize;
+        DeviceInfo.wPageDataSize = spectra_mtd->writesize;
+        DeviceInfo.wPageSpareSize = spectra_mtd->oobsize;
+        DeviceInfo.wBlockSize = DeviceInfo.wPageSize * DeviceInfo.wPagesPerBlock;
+        DeviceInfo.wBlockDataSize = DeviceInfo.wPageDataSize * DeviceInfo.wPagesPerBlock;
+        DeviceInfo.wDataBlockNum = (u32) (DeviceInfo.wSpectraEndBlock -
+                                                DeviceInfo.wSpectraStartBlock
+                                                + 1);
+        DeviceInfo.MLCDevice = 0;//spectra_mtd->celltype & NAND_CI_CELLTYPE_MSK;
+        DeviceInfo.nBitsInPageNumber =
+                (u8)GLOB_Calc_Used_Bits(DeviceInfo.wPagesPerBlock);
+        DeviceInfo.nBitsInPageDataSize =
+                (u8)GLOB_Calc_Used_Bits(DeviceInfo.wPageDataSize);
+        DeviceInfo.nBitsInBlockDataSize =
+                (u8)GLOB_Calc_Used_Bits(DeviceInfo.wBlockDataSize);
+
+#if CMD_DMA
+        totalUsedBanks = 4;
+        valid_banks[0] = 1;
+        valid_banks[1] = 1;
+        valid_banks[2] = 1;
+        valid_banks[3] = 1;
+#endif
+
+        return PASS;
+}
+
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     mtd_Flash_Reset
+* Inputs:       none
+* Outputs:      PASS=0 (notice 0=ok here)
+* Description:          Reset the flash
+*
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+u16 mtd_Flash_Reset(void)
+{
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+
+        return PASS;
+}
+
+void erase_callback(struct erase_info *e)
+{
+        complete((void *)e->priv);
+}
+
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     mtd_Erase_Block
+* Inputs:       Address
+* Outputs:      PASS=0 (notice 0=ok here)
+* Description:          Erase a block
+*
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+u16 mtd_Erase_Block(u32 block_add)
+{
+        struct erase_info erase;
+        DECLARE_COMPLETION_ONSTACK(comp);
+        int ret;
+
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+
+        if (block_add >= DeviceInfo.wTotalBlocks) {
+                printk(KERN_ERR "mtd_Erase_Block error! "
+                       "Too big block address: %d\n", block_add);
+                return FAIL;
+        }
+
+        nand_dbg_print(NAND_DBG_DEBUG, "Erasing block %d\n",
+                (int)block_add);
+
+        erase.mtd = spectra_mtd;
+        erase.callback = erase_callback;
+        erase.addr = block_add * spectra_mtd->erasesize;
+        erase.len = spectra_mtd->erasesize;
+        erase.priv = (unsigned long)&comp;
+
+        ret = spectra_mtd->erase(spectra_mtd, &erase);
+        if (!ret) {
+                wait_for_completion(&comp);
+                if (erase.state != MTD_ERASE_DONE)
+                        ret = -EIO;
+        }
+        if (ret) {
+                printk(KERN_WARNING "mtd_Erase_Block error! "
+                       "erase of region [0x%llx, 0x%llx] failed\n",
+                       erase.addr, erase.len);
+                return FAIL;
+        }
+
+        return PASS;
+}
+
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     mtd_Write_Page_Main
+* Inputs:       Write buffer address pointer
+*               Block number
+*               Page  number
+*               Number of pages to process
+* Outputs:      PASS=0 (notice 0=ok here)
+* Description:  Write the data in the buffer to main area of flash
+*
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+u16 mtd_Write_Page_Main(u8 *write_data, u32 Block,
+                           u16 Page, u16 PageCount)
+{
+        size_t retlen;
+        int ret = 0;
+
+        if (Block >= DeviceInfo.wTotalBlocks)
+                return FAIL;
+
+        if (Page + PageCount > DeviceInfo.wPagesPerBlock)
+                return FAIL;
+
+        nand_dbg_print(NAND_DBG_DEBUG, "mtd_Write_Page_Main: "
+                       "lba %u Page %u PageCount %u\n",
+                       (unsigned int)Block,
+                       (unsigned int)Page, (unsigned int)PageCount);
+
+
+        while (PageCount) {
+                ret = spectra_mtd->write(spectra_mtd,
+                                         (Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize),
+                                         DeviceInfo.wPageDataSize, &retlen, write_data);
+                if (ret) {
+                        printk(KERN_ERR "%s failed %d\n", __func__, ret);
+                        return FAIL;
+                }
+                write_data += DeviceInfo.wPageDataSize;
+                Page++;
+                PageCount--;
+        }
+
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+
+        return PASS;
+}
+
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     mtd_Read_Page_Main
+* Inputs:       Read buffer address pointer
+*               Block number
+*               Page  number
+*               Number of pages to process
+* Outputs:      PASS=0 (notice 0=ok here)
+* Description:  Read the data from the flash main area to the buffer
+*
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+u16 mtd_Read_Page_Main(u8 *read_data, u32 Block,
+                          u16 Page, u16 PageCount)
+{
+        size_t retlen;
+        int ret = 0;
+
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+
+        if (Block >= DeviceInfo.wTotalBlocks)
+                return FAIL;
+
+        if (Page + PageCount > DeviceInfo.wPagesPerBlock)
+                return FAIL;
+
+        nand_dbg_print(NAND_DBG_DEBUG, "mtd_Read_Page_Main: "
+                       "lba %u Page %u PageCount %u\n",
+                       (unsigned int)Block,
+                       (unsigned int)Page, (unsigned int)PageCount);
+
+
+        while (PageCount) {
+                ret = spectra_mtd->read(spectra_mtd,
+                                        (Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize),
+                                        DeviceInfo.wPageDataSize, &retlen, read_data);
+                if (ret) {
+                        printk(KERN_ERR "%s failed %d\n", __func__, ret);
+                        return FAIL;
+                }
+                read_data += DeviceInfo.wPageDataSize;
+                Page++;
+                PageCount--;
+        }
+
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+
+        return PASS;
+}
+
+#ifndef ELDORA
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     mtd_Read_Page_Main_Spare
+* Inputs:       Write Buffer
+*                       Address
+*                       Buffer size
+* Outputs:      PASS=0 (notice 0=ok here)
+* Description:          Read from flash main+spare area
+*
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+u16 mtd_Read_Page_Main_Spare(u8 *read_data, u32 Block,
+                                u16 Page, u16 PageCount)
+{
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+
+        if (Block >= DeviceInfo.wTotalBlocks) {
+                printk(KERN_ERR "Read Page Main+Spare "
+                       "Error: Block Address too big\n");
+                return FAIL;
+        }
+
+        if (Page + PageCount > DeviceInfo.wPagesPerBlock) {
+                printk(KERN_ERR "Read Page Main+Spare "
+                       "Error: Page number %d+%d too big in block %d\n",
+                       Page, PageCount, Block);
+                return FAIL;
+        }
+
+        nand_dbg_print(NAND_DBG_DEBUG, "Read Page Main + Spare - "
+                       "No. of pages %u block %u start page %u\n",
+                       (unsigned int)PageCount,
+                       (unsigned int)Block, (unsigned int)Page);
+
+
+        while (PageCount) {
+                struct mtd_oob_ops ops;
+                int ret;
+
+                ops.mode = MTD_OOB_AUTO;
+                ops.datbuf = read_data;
+                ops.len = DeviceInfo.wPageDataSize;
+                ops.oobbuf = read_data + DeviceInfo.wPageDataSize + BTSIG_OFFSET;
+                ops.ooblen = BTSIG_BYTES;
+                ops.ooboffs = 0;
+
+                ret = spectra_mtd->read_oob(spectra_mtd,
+                                            (Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize),
+                                            &ops);
+                if (ret) {
+                        printk(KERN_ERR "%s failed %d\n", __func__, ret);
+                        return FAIL;
+                }
+                read_data += DeviceInfo.wPageSize;
+                Page++;
+                PageCount--;
+        }
+
+        return PASS;
+}
+
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     mtd_Write_Page_Main_Spare
+* Inputs:       Write buffer
+*                       address
+*                       buffer length
+* Outputs:      PASS=0 (notice 0=ok here)
+* Description:          Write the buffer to main+spare area of flash
+*
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+u16 mtd_Write_Page_Main_Spare(u8 *write_data, u32 Block,
+                                 u16 Page, u16 page_count)
+{
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+
+        if (Block >= DeviceInfo.wTotalBlocks) {
+                printk(KERN_ERR "Write Page Main + Spare "
+                       "Error: Block Address too big\n");
+                return FAIL;
+        }
+
+        if (Page + page_count > DeviceInfo.wPagesPerBlock) {
+                printk(KERN_ERR "Write Page Main + Spare "
+                       "Error: Page number %d+%d too big in block %d\n",
+                       Page, page_count, Block);
+                WARN_ON(1);
+                return FAIL;
+        }
+
+        nand_dbg_print(NAND_DBG_DEBUG, "Write Page Main+Spare - "
+                       "No. of pages %u block %u start page %u\n",
+                       (unsigned int)page_count,
+                       (unsigned int)Block, (unsigned int)Page);
+
+        while (page_count) {
+                struct mtd_oob_ops ops;
+                int ret;
+
+                ops.mode = MTD_OOB_AUTO;
+                ops.datbuf = write_data;
+                ops.len = DeviceInfo.wPageDataSize;
+                ops.oobbuf = write_data + DeviceInfo.wPageDataSize + BTSIG_OFFSET;
+                ops.ooblen = BTSIG_BYTES;
+                ops.ooboffs = 0;
+
+                ret = spectra_mtd->write_oob(spectra_mtd,
+                                             (Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize),
+                                             &ops);
+                if (ret) {
+                        printk(KERN_ERR "%s failed %d\n", __func__, ret);
+                        return FAIL;
+                }
+                write_data += DeviceInfo.wPageSize;
+                Page++;
+                page_count--;
+        }
+
+        return PASS;
+}
+
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     mtd_Write_Page_Spare
+* Inputs:       Write buffer
+*                       Address
+*                       buffer size
+* Outputs:      PASS=0 (notice 0=ok here)
+* Description:          Write the buffer in the spare area
+*
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+u16 mtd_Write_Page_Spare(u8 *write_data, u32 Block,
+                            u16 Page, u16 PageCount)
+{
+        WARN_ON(1);
+        return FAIL;
+}
+
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     mtd_Read_Page_Spare
+* Inputs:       Write Buffer
+*                       Address
+*                       Buffer size
+* Outputs:      PASS=0 (notice 0=ok here)
+* Description:          Read data from the spare area
+*
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+u16 mtd_Read_Page_Spare(u8 *read_data, u32 Block,
+                           u16 Page, u16 PageCount)
+{
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+
+        if (Block >= DeviceInfo.wTotalBlocks) {
+                printk(KERN_ERR "Read Page Spare "
+                       "Error: Block Address too big\n");
+                return FAIL;
+        }
+
+        if (Page + PageCount > DeviceInfo.wPagesPerBlock) {
+                printk(KERN_ERR "Read Page Spare "
+                       "Error: Page number too big\n");
+                return FAIL;
+        }
+
+        nand_dbg_print(NAND_DBG_DEBUG, "Read Page Spare- "
+                       "block %u page %u (%u pages)\n",
+                       (unsigned int)Block, (unsigned int)Page, PageCount);
+
+        while (PageCount) {
+                struct mtd_oob_ops ops;
+                int ret;
+
+                ops.mode = MTD_OOB_AUTO;
+                ops.datbuf = NULL;
+                ops.len = 0;
+                ops.oobbuf = read_data;
+                ops.ooblen = BTSIG_BYTES;
+                ops.ooboffs = 0;
+
+                ret = spectra_mtd->read_oob(spectra_mtd,
+                                            (Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize),
+                                            &ops);
+                if (ret) {
+                        printk(KERN_ERR "%s failed %d\n", __func__, ret);
+                        return FAIL;
+                }
+
+                read_data += DeviceInfo.wPageSize;
+                Page++;
+                PageCount--;
+        }
+
+        return PASS;
+}
+
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     mtd_Enable_Disable_Interrupts
+* Inputs:       enable or disable
+* Outputs:      none
+* Description:  NOP
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+void mtd_Enable_Disable_Interrupts(u16 INT_ENABLE)
+{
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+}
+
+u16 mtd_Get_Bad_Block(u32 block)
+{
+        return 0;
+}
+
+#if CMD_DMA
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Support for CDMA functions
+************************************
+*       mtd_CDMA_Flash_Init
+*           CDMA_process_data command   (use LLD_CDMA)
+*           CDMA_MemCopy_CMD            (use LLD_CDMA)
+*       mtd_CDMA_execute all commands
+*       mtd_CDMA_Event_Status
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+u16 mtd_CDMA_Flash_Init(void)
+{
+        u16 i;
+
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+
+        for (i = 0; i < MAX_DESCS + MAX_CHANS; i++) {
+                PendingCMD[i].CMD = 0;
+                PendingCMD[i].Tag = 0;
+                PendingCMD[i].DataAddr = 0;
+                PendingCMD[i].Block = 0;
+                PendingCMD[i].Page = 0;
+                PendingCMD[i].PageCount = 0;
+                PendingCMD[i].DataDestAddr = 0;
+                PendingCMD[i].DataSrcAddr = 0;
+                PendingCMD[i].MemCopyByteCnt = 0;
+                PendingCMD[i].ChanSync[0] = 0;
+                PendingCMD[i].ChanSync[1] = 0;
+                PendingCMD[i].ChanSync[2] = 0;
+                PendingCMD[i].ChanSync[3] = 0;
+                PendingCMD[i].ChanSync[4] = 0;
+                PendingCMD[i].Status = 3;
+        }
+
+        return PASS;
+}
+
+static void mtd_isr(int irq, void *dev_id)
+{
+        /* TODO:  ... */
+}
+
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     CDMA_Execute_CMDs
+* Inputs:       tag_count:  the number of pending cmds to do
+* Outputs:      PASS/FAIL
+* Description:  execute each command in the pending CMD array
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+u16 mtd_CDMA_Execute_CMDs(u16 tag_count)
+{
+        u16 i, j;
+        u8 CMD;         /* cmd parameter */
+        u8 *data;
+        u32 block;
+        u16 page;
+        u16 count;
+        u16 status = PASS;
+
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+
+        nand_dbg_print(NAND_DBG_TRACE, "At start of Execute CMDs: "
+                       "Tag Count %u\n", tag_count);
+
+        for (i = 0; i < totalUsedBanks; i++) {
+                PendingCMD[i].CMD = DUMMY_CMD;
+                PendingCMD[i].Tag = 0xFF;
+                PendingCMD[i].Block =
+                    (DeviceInfo.wTotalBlocks / totalUsedBanks) * i;
+
+                for (j = 0; j <= MAX_CHANS; j++)
+                        PendingCMD[i].ChanSync[j] = 0;
+        }
+
+        CDMA_Execute_CMDs(tag_count);
+
+#ifdef VERBOSE
+                print_pending_cmds(tag_count);
+#endif
+#if DEBUG_SYNC
+        }
+        debug_sync_cnt++;
+#endif
+
+        for (i = MAX_CHANS;
+             i < tag_count + MAX_CHANS; i++) {
+                CMD = PendingCMD[i].CMD;
+                data = PendingCMD[i].DataAddr;
+                block = PendingCMD[i].Block;
+                page = PendingCMD[i].Page;
+                count = PendingCMD[i].PageCount;
+
+                switch (CMD) {
+                case ERASE_CMD:
+                        mtd_Erase_Block(block);
+                        PendingCMD[i].Status = PASS;
+                        break;
+                case WRITE_MAIN_CMD:
+                        mtd_Write_Page_Main(data, block, page, count);
+                        PendingCMD[i].Status = PASS;
+                        break;
+                case WRITE_MAIN_SPARE_CMD:
+                        mtd_Write_Page_Main_Spare(data, block, page, count);
+                        PendingCMD[i].Status = PASS;
+                        break;
+                case READ_MAIN_CMD:
+                        mtd_Read_Page_Main(data, block, page, count);
+                        PendingCMD[i].Status = PASS;
+                        break;
+                case MEMCOPY_CMD:
+                        memcpy(PendingCMD[i].DataDestAddr,
+                               PendingCMD[i].DataSrcAddr,
+                               PendingCMD[i].MemCopyByteCnt);
+                case DUMMY_CMD:
+                        PendingCMD[i].Status = PASS;
+                        break;
+                default:
+                        PendingCMD[i].Status = FAIL;
+                        break;
+                }
+        }
+
+        /*
+         * Temperory adding code to reset PendingCMD array for basic testing.
+         * It should be done at the end of  event status function.
+         */
+        for (i = tag_count + MAX_CHANS; i < MAX_DESCS; i++) {
+                PendingCMD[i].CMD = 0;
+                PendingCMD[i].Tag = 0;
+                PendingCMD[i].DataAddr = 0;
+                PendingCMD[i].Block = 0;
+                PendingCMD[i].Page = 0;
+                PendingCMD[i].PageCount = 0;
+                PendingCMD[i].DataDestAddr = 0;
+                PendingCMD[i].DataSrcAddr = 0;
+                PendingCMD[i].MemCopyByteCnt = 0;
+                PendingCMD[i].ChanSync[0] = 0;
+                PendingCMD[i].ChanSync[1] = 0;
+                PendingCMD[i].ChanSync[2] = 0;
+                PendingCMD[i].ChanSync[3] = 0;
+                PendingCMD[i].ChanSync[4] = 0;
+                PendingCMD[i].Status = CMD_NOT_DONE;
+        }
+
+        nand_dbg_print(NAND_DBG_TRACE, "At end of Execute CMDs.\n");
+
+        mtd_isr(0, 0); /* This is a null isr now. Need fill it in future */
+
+        return status;
+}
+
+/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
+* Function:     mtd_Event_Status
+* Inputs:       none
+* Outputs:      Event_Status code
+* Description:  This function can also be used to force errors
+*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
+u16 mtd_CDMA_Event_Status(void)
+{
+        nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
+                       __FILE__, __LINE__, __func__);
+
+        return EVENT_PASS;
+}
+
+#endif /* CMD_DMA */
+#endif /* !ELDORA */