#include <linux/slab.h>
#include <asm/byteorder.h>

#include "usb.h"
#include "scsiglue.h"
#include "transport.h"
#include "ms.h"

/*
 * MS_ReaderCopyBlock()
 */
int MS_ReaderCopyBlock(struct us_data *us, WORD oldphy, WORD newphy,
			WORD PhyBlockAddr, BYTE PageNum, PBYTE buf, WORD len)
{
	struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf;
	int	result;

	/* printk(KERN_INFO "MS_ReaderCopyBlock --- PhyBlockAddr = %x,
				PageNum = %x\n", PhyBlockAddr, PageNum); */
	result = ENE_LoadBinCode(us, MS_RW_PATTERN);
	if (result != USB_STOR_XFER_GOOD)
		return USB_STOR_TRANSPORT_ERROR;

	memset(bcb, 0, sizeof(struct bulk_cb_wrap));
	bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
	bcb->DataTransferLength = 0x200*len;
	bcb->Flags			= 0x00;
	bcb->CDB[0]			= 0xF0;
	bcb->CDB[1]			= 0x08;
	bcb->CDB[4]			= (BYTE)(oldphy);
	bcb->CDB[3]			= (BYTE)(oldphy>>8);
	bcb->CDB[2]			= 0; /* (BYTE)(oldphy>>16) */
	bcb->CDB[7]			= (BYTE)(newphy);
	bcb->CDB[6]			= (BYTE)(newphy>>8);
	bcb->CDB[5]			= 0; /* (BYTE)(newphy>>16) */
	bcb->CDB[9]			= (BYTE)(PhyBlockAddr);
	bcb->CDB[8]			= (BYTE)(PhyBlockAddr>>8);
	bcb->CDB[10]		= PageNum;

	result = ENE_SendScsiCmd(us, FDIR_WRITE, buf, 0);
	if (result != USB_STOR_XFER_GOOD)
		return USB_STOR_TRANSPORT_ERROR;

	return USB_STOR_TRANSPORT_GOOD;
}

/*
 * MS_ReaderReadPage()
 */
int MS_ReaderReadPage(struct us_data *us, DWORD PhyBlockAddr,
		BYTE PageNum, PDWORD PageBuf, MS_LibTypeExtdat *ExtraDat)
{
	struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf;
	int	result;
	BYTE	ExtBuf[4];
	DWORD	bn = PhyBlockAddr * 0x20 + PageNum;

	/* printk(KERN_INFO "MS --- MS_ReaderReadPage,
		PhyBlockAddr = %x, PageNum = %x\n", PhyBlockAddr, PageNum); */

	result = ENE_LoadBinCode(us, MS_RW_PATTERN);
	if (result != USB_STOR_XFER_GOOD)
		return USB_STOR_TRANSPORT_ERROR;

	/* Read Page Data */
	memset(bcb, 0, sizeof(struct bulk_cb_wrap));
	bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
	bcb->DataTransferLength = 0x200;
	bcb->Flags			= 0x80;
	bcb->CDB[0]			= 0xF1;
	bcb->CDB[1]			= 0x02;
	bcb->CDB[5]			= (BYTE)(bn);
	bcb->CDB[4]			= (BYTE)(bn>>8);
	bcb->CDB[3]			= (BYTE)(bn>>16);
	bcb->CDB[2]			= (BYTE)(bn>>24);

	result = ENE_SendScsiCmd(us, FDIR_READ, PageBuf, 0);
	if (result != USB_STOR_XFER_GOOD)
		return USB_STOR_TRANSPORT_ERROR;

	/* Read Extra Data */
	memset(bcb, 0, sizeof(struct bulk_cb_wrap));
	bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
	bcb->DataTransferLength = 0x4;
	bcb->Flags			= 0x80;
	bcb->CDB[0]			= 0xF1;
	bcb->CDB[1]			= 0x03;
	bcb->CDB[5]			= (BYTE)(PageNum);
	bcb->CDB[4]			= (BYTE)(PhyBlockAddr);
	bcb->CDB[3]			= (BYTE)(PhyBlockAddr>>8);
	bcb->CDB[2]			= (BYTE)(PhyBlockAddr>>16);
	bcb->CDB[6]			= 0x01;

	result = ENE_SendScsiCmd(us, FDIR_READ, &ExtBuf, 0);
	if (result != USB_STOR_XFER_GOOD)
		return USB_STOR_TRANSPORT_ERROR;

	ExtraDat->reserved = 0;
	ExtraDat->intr     = 0x80;  /* Not yet,fireware support */
	ExtraDat->status0  = 0x10;  /* Not yet,fireware support */
	ExtraDat->status1  = 0x00;  /* Not yet,fireware support */
	ExtraDat->ovrflg   = ExtBuf[0];
	ExtraDat->mngflg   = ExtBuf[1];
	ExtraDat->logadr   = MemStickLogAddr(ExtBuf[2], ExtBuf[3]);

	return USB_STOR_TRANSPORT_GOOD;
}

/*
 * MS_ReaderEraseBlock()
 */
int MS_ReaderEraseBlock(struct us_data *us, DWORD PhyBlockAddr)
{
	struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf;
	int	result;
	DWORD	bn = PhyBlockAddr;

	/* printk(KERN_INFO "MS --- MS_ReaderEraseBlock,
		PhyBlockAddr = %x\n", PhyBlockAddr); */
	result = ENE_LoadBinCode(us, MS_RW_PATTERN);
	if (result != USB_STOR_XFER_GOOD)
		return USB_STOR_TRANSPORT_ERROR;

	memset(bcb, 0, sizeof(struct bulk_cb_wrap));
	bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
	bcb->DataTransferLength = 0x200;
	bcb->Flags			= 0x80;
	bcb->CDB[0]			= 0xF2;
	bcb->CDB[1]			= 0x06;
	bcb->CDB[4]			= (BYTE)(bn);
	bcb->CDB[3]			= (BYTE)(bn>>8);
	bcb->CDB[2]			= (BYTE)(bn>>16);

	result = ENE_SendScsiCmd(us, FDIR_READ, NULL, 0);
	if (result != USB_STOR_XFER_GOOD)
		return USB_STOR_TRANSPORT_ERROR;

	return USB_STOR_TRANSPORT_GOOD;
}

/*
 * MS_CardInit()
 */
int MS_CardInit(struct us_data *us)
{
	DWORD			result = 0;
	WORD			TmpBlock;
	PBYTE			PageBuffer0 = NULL, PageBuffer1 = NULL;
	MS_LibTypeExtdat	extdat;
	WORD			btBlk1st, btBlk2nd;
	DWORD			btBlk1stErred;

	printk(KERN_INFO "MS_CardInit start\n");

	MS_LibFreeAllocatedArea(us);

	PageBuffer0 = kmalloc(MS_BYTES_PER_PAGE, GFP_KERNEL);
	PageBuffer1 = kmalloc(MS_BYTES_PER_PAGE, GFP_KERNEL);
	if ((PageBuffer0 == NULL) || (PageBuffer1 == NULL)) {
		result = MS_NO_MEMORY_ERROR;
		goto exit;
	}

	btBlk1st = btBlk2nd = MS_LB_NOT_USED;
	btBlk1stErred = 0;

	for (TmpBlock = 0; TmpBlock < MS_MAX_INITIAL_ERROR_BLOCKS+2;
		TmpBlock++) {
		switch (MS_ReaderReadPage(us, TmpBlock, 0,
			(DWORD *)PageBuffer0, &extdat)) {
		case MS_STATUS_SUCCESS:
			break;
		case MS_STATUS_INT_ERROR:
			break;
		case MS_STATUS_ERROR:
		default:
			continue;
		}

		if ((extdat.ovrflg & MS_REG_OVR_BKST) == MS_REG_OVR_BKST_NG)
			continue;

		if (((extdat.mngflg & MS_REG_MNG_SYSFLG) == MS_REG_MNG_SYSFLG_USER) ||
			(be16_to_cpu(((MemStickBootBlockPage0 *)PageBuffer0)->header.wBlockID) != MS_BOOT_BLOCK_ID) ||
			(be16_to_cpu(((MemStickBootBlockPage0 *)PageBuffer0)->header.wFormatVersion) != MS_BOOT_BLOCK_FORMAT_VERSION) ||
			(((MemStickBootBlockPage0 *)PageBuffer0)->header.bNumberOfDataEntry != MS_BOOT_BLOCK_DATA_ENTRIES))
				continue;

		if (btBlk1st != MS_LB_NOT_USED) {
			btBlk2nd = TmpBlock;
			break;
		}

		btBlk1st = TmpBlock;
		memcpy(PageBuffer1, PageBuffer0, MS_BYTES_PER_PAGE);
		if (extdat.status1 &
			(MS_REG_ST1_DTER | MS_REG_ST1_EXER | MS_REG_ST1_FGER))
			btBlk1stErred = 1;
	}

	if (btBlk1st == MS_LB_NOT_USED) {
		result = MS_STATUS_ERROR;
		goto exit;
	}

	/* write protect */
	if ((extdat.status0 & MS_REG_ST0_WP) == MS_REG_ST0_WP_ON)
		MS_LibCtrlSet(us, MS_LIB_CTRL_WRPROTECT);

	result = MS_STATUS_ERROR;
	/* 1st Boot Block */
	if (btBlk1stErred == 0)
		result = MS_LibProcessBootBlock(us, btBlk1st, PageBuffer1);
		/* 1st */
	/* 2nd Boot Block */
	if (result && (btBlk2nd != MS_LB_NOT_USED))
		result = MS_LibProcessBootBlock(us, btBlk2nd, PageBuffer0);

	if (result) {
		result = MS_STATUS_ERROR;
		goto exit;
	}

	for (TmpBlock = 0; TmpBlock < btBlk1st; TmpBlock++)
		us->MS_Lib.Phy2LogMap[TmpBlock] = MS_LB_INITIAL_ERROR;

	us->MS_Lib.Phy2LogMap[btBlk1st] = MS_LB_BOOT_BLOCK;

	if (btBlk2nd != MS_LB_NOT_USED) {
		for (TmpBlock = btBlk1st + 1; TmpBlock < btBlk2nd; TmpBlock++)
			us->MS_Lib.Phy2LogMap[TmpBlock] = MS_LB_INITIAL_ERROR;
		us->MS_Lib.Phy2LogMap[btBlk2nd] = MS_LB_BOOT_BLOCK;
	}

	result = MS_LibScanLogicalBlockNumber(us, btBlk1st);
	if (result)
		goto exit;

	for (TmpBlock = MS_PHYSICAL_BLOCKS_PER_SEGMENT;
		TmpBlock < us->MS_Lib.NumberOfPhyBlock;
		TmpBlock += MS_PHYSICAL_BLOCKS_PER_SEGMENT) {
		if (MS_CountFreeBlock(us, TmpBlock) == 0) {
			MS_LibCtrlSet(us, MS_LIB_CTRL_WRPROTECT);
			break;
		}
	}

	/* write */
	if (MS_LibAllocWriteBuf(us)) {
		result = MS_NO_MEMORY_ERROR;
		goto exit;
	}

	result = MS_STATUS_SUCCESS;

exit:
	kfree(PageBuffer1);
	kfree(PageBuffer0);

	printk(KERN_INFO "MS_CardInit end\n");
	return result;
}

/*
 * MS_LibCheckDisableBlock()
 */
int MS_LibCheckDisableBlock(struct us_data *us, WORD PhyBlock)
{
	PWORD			PageBuf = NULL;
	DWORD			result = MS_STATUS_SUCCESS;
	DWORD			blk, index = 0;
	MS_LibTypeExtdat	extdat;

	PageBuf = kmalloc(MS_BYTES_PER_PAGE, GFP_KERNEL);
	if (PageBuf == NULL) {
		result = MS_NO_MEMORY_ERROR;
		goto exit;
	}

	MS_ReaderReadPage(us, PhyBlock, 1, (DWORD *)PageBuf, &extdat);
	do {
		blk = be16_to_cpu(PageBuf[index]);
		if (blk == MS_LB_NOT_USED)
			break;
		if (blk == us->MS_Lib.Log2PhyMap[0]) {
			result = MS_ERROR_FLASH_READ;
			break;
		}
		index++;
	} while (1);

exit:
	kfree(PageBuf);
	return result;
}

/*
 * MS_LibFreeAllocatedArea()
 */
void MS_LibFreeAllocatedArea(struct us_data *us)
{
	MS_LibFreeWriteBuf(us);
	MS_LibFreeLogicalMap(us);

	us->MS_Lib.flags			= 0;
	us->MS_Lib.BytesPerSector	= 0;
	us->MS_Lib.SectorsPerCylinder	= 0;

	us->MS_Lib.cardType		= 0;
	us->MS_Lib.blockSize		= 0;
	us->MS_Lib.PagesPerBlock	= 0;

	us->MS_Lib.NumberOfPhyBlock	= 0;
	us->MS_Lib.NumberOfLogBlock	= 0;
}

/*
 * MS_LibFreeWriteBuf()
 */
void MS_LibFreeWriteBuf(struct us_data *us)
{
	us->MS_Lib.wrtblk = (WORD)-1; /* set to -1 */

	/* memset((fdoExt)->MS_Lib.pagemap, 0,
			sizeof((fdoExt)->MS_Lib.pagemap)) */
	MS_LibClearPageMap(us);

	if (us->MS_Lib.blkpag) {
		kfree((BYTE *)(us->MS_Lib.blkpag));  /* Arnold test ... */
		us->MS_Lib.blkpag = NULL;
	}

	if (us->MS_Lib.blkext) {
		kfree((BYTE *)(us->MS_Lib.blkext));  /* Arnold test ... */
		us->MS_Lib.blkext = NULL;
	}
}

/*
 * MS_LibFreeLogicalMap()
 */
int MS_LibFreeLogicalMap(struct us_data *us)
{
	kfree(us->MS_Lib.Phy2LogMap);
	us->MS_Lib.Phy2LogMap = NULL;

	kfree(us->MS_Lib.Log2PhyMap);
	us->MS_Lib.Log2PhyMap = NULL;

	return 0;
}

/*
 * MS_LibProcessBootBlock()
 */
int MS_LibProcessBootBlock(struct us_data *us, WORD PhyBlock, BYTE *PageData)
{
	MemStickBootBlockSysEnt  *SysEntry;
	MemStickBootBlockSysInf  *SysInfo;
	DWORD                    i, result;
	BYTE                     PageNumber;
	BYTE                     *PageBuffer;
	MS_LibTypeExtdat         ExtraData;


	PageBuffer = kmalloc(MS_BYTES_PER_PAGE, GFP_KERNEL);
	if (PageBuffer == NULL)
		return (DWORD)-1;

	result = (DWORD)-1;

	SysInfo = &(((MemStickBootBlockPage0 *)PageData)->sysinf);

	if ((SysInfo->bMsClass != MS_SYSINF_MSCLASS_TYPE_1) ||
		(be16_to_cpu(SysInfo->wPageSize) != MS_SYSINF_PAGE_SIZE) ||
		((SysInfo->bSecuritySupport & MS_SYSINF_SECURITY) == MS_SYSINF_SECURITY_SUPPORT) ||
		(SysInfo->bReserved1 != MS_SYSINF_RESERVED1) ||
		(SysInfo->bReserved2 != MS_SYSINF_RESERVED2) ||
		(SysInfo->bFormatType != MS_SYSINF_FORMAT_FAT) ||
		(SysInfo->bUsage != MS_SYSINF_USAGE_GENERAL))
		goto exit;

	switch (us->MS_Lib.cardType = SysInfo->bCardType) {
	case MS_SYSINF_CARDTYPE_RDONLY:
		MS_LibCtrlSet(us, MS_LIB_CTRL_RDONLY);
		break;
	case MS_SYSINF_CARDTYPE_RDWR:
		MS_LibCtrlReset(us, MS_LIB_CTRL_RDONLY);
		break;
	case MS_SYSINF_CARDTYPE_HYBRID:
	default:
		goto exit;
	}

	us->MS_Lib.blockSize        = be16_to_cpu(SysInfo->wBlockSize);
	us->MS_Lib.NumberOfPhyBlock = be16_to_cpu(SysInfo->wBlockNumber);
	us->MS_Lib.NumberOfLogBlock = be16_to_cpu(SysInfo->wTotalBlockNumber)
									-2;
	us->MS_Lib.PagesPerBlock    = us->MS_Lib.blockSize * SIZE_OF_KIRO /
							MS_BYTES_PER_PAGE;
	us->MS_Lib.NumberOfSegment  = us->MS_Lib.NumberOfPhyBlock /
					MS_PHYSICAL_BLOCKS_PER_SEGMENT;
	us->MS_Model                = be16_to_cpu(SysInfo->wMemorySize);

	/*Allocate to all number of logicalblock and physicalblock */
	if (MS_LibAllocLogicalMap(us))
		goto exit;

	/* Mark the book block */
	MS_LibSetBootBlockMark(us, PhyBlock);

	SysEntry = &(((MemStickBootBlockPage0 *)PageData)->sysent);

	for (i = 0; i < MS_NUMBER_OF_SYSTEM_ENTRY; i++) {
		DWORD  EntryOffset, EntrySize;

		EntryOffset = be32_to_cpu(SysEntry->entry[i].dwStart);

		if (EntryOffset == 0xffffff)
			continue;
		EntrySize = be32_to_cpu(SysEntry->entry[i].dwSize);

		if (EntrySize == 0)
			continue;

		if (EntryOffset + MS_BYTES_PER_PAGE + EntrySize >
			us->MS_Lib.blockSize * (DWORD)SIZE_OF_KIRO)
			continue;

		if (i == 0) {
			BYTE  PrevPageNumber = 0;
			WORD  phyblk;

			if (SysEntry->entry[i].bType !=
				MS_SYSENT_TYPE_INVALID_BLOCK)
				goto exit;

			while (EntrySize > 0) {

				PageNumber = (BYTE)(EntryOffset /
							MS_BYTES_PER_PAGE + 1);
				if (PageNumber != PrevPageNumber) {
					switch (MS_ReaderReadPage(us, PhyBlock,
						PageNumber, (DWORD *)PageBuffer,
						&ExtraData)) {
					case MS_STATUS_SUCCESS:
						break;
					case MS_STATUS_WRITE_PROTECT:
					case MS_ERROR_FLASH_READ:
					case MS_STATUS_ERROR:
					default:
						goto exit;
					}

					PrevPageNumber = PageNumber;
				}

				phyblk = be16_to_cpu(*(WORD *)(PageBuffer +
					(EntryOffset % MS_BYTES_PER_PAGE)));
				if (phyblk < 0x0fff)
					MS_LibSetInitialErrorBlock(us, phyblk);

				EntryOffset += 2;
				EntrySize -= 2;
			}
		} else if (i == 1) {  /* CIS/IDI */
			MemStickBootBlockIDI  *idi;

			if (SysEntry->entry[i].bType != MS_SYSENT_TYPE_CIS_IDI)
				goto exit;

			switch (MS_ReaderReadPage(us, PhyBlock,
				(BYTE)(EntryOffset / MS_BYTES_PER_PAGE + 1),
				(DWORD *)PageBuffer, &ExtraData)) {
			case MS_STATUS_SUCCESS:
				break;
			case MS_STATUS_WRITE_PROTECT:
			case MS_ERROR_FLASH_READ:
			case MS_STATUS_ERROR:
			default:
				goto exit;
			}

			idi = &((MemStickBootBlockCIS_IDI *)(PageBuffer +
				(EntryOffset % MS_BYTES_PER_PAGE)))->idi.idi;
			if (le16_to_cpu(idi->wIDIgeneralConfiguration) !=
							MS_IDI_GENERAL_CONF)
				goto exit;

			us->MS_Lib.BytesPerSector =
				le16_to_cpu(idi->wIDIbytesPerSector);
			if (us->MS_Lib.BytesPerSector != MS_BYTES_PER_PAGE)
				goto exit;
		}
	} /* End for .. */

	result = 0;

exit:
	if (result)
		MS_LibFreeLogicalMap(us);

	kfree(PageBuffer);

	result = 0;
	return result;
}

/*
 * MS_LibAllocLogicalMap()
 */
int MS_LibAllocLogicalMap(struct us_data *us)
{
	DWORD  i;


	us->MS_Lib.Phy2LogMap = kmalloc(us->MS_Lib.NumberOfPhyBlock *
						sizeof(WORD), GFP_KERNEL);
	us->MS_Lib.Log2PhyMap = kmalloc(us->MS_Lib.NumberOfLogBlock *
						sizeof(WORD), GFP_KERNEL);

	if ((us->MS_Lib.Phy2LogMap == NULL) ||
		(us->MS_Lib.Log2PhyMap == NULL)) {
		MS_LibFreeLogicalMap(us);
		return (DWORD)-1;
	}

	for (i = 0; i < us->MS_Lib.NumberOfPhyBlock; i++)
		us->MS_Lib.Phy2LogMap[i] = MS_LB_NOT_USED;

	for (i = 0; i < us->MS_Lib.NumberOfLogBlock; i++)
		us->MS_Lib.Log2PhyMap[i] = MS_LB_NOT_USED;

	return 0;
}

/*
 * MS_LibSetBootBlockMark()
 */
int MS_LibSetBootBlockMark(struct us_data *us, WORD phyblk)
{
	return MS_LibSetLogicalBlockMark(us, phyblk, MS_LB_BOOT_BLOCK);
}

/*
 * MS_LibSetLogicalBlockMark()
 */
int MS_LibSetLogicalBlockMark(struct us_data *us, WORD phyblk, WORD mark)
{
	if (phyblk >= us->MS_Lib.NumberOfPhyBlock)
		return (DWORD)-1;

	us->MS_Lib.Phy2LogMap[phyblk] = mark;

	return 0;
}

/*
 * MS_LibSetInitialErrorBlock()
 */
int MS_LibSetInitialErrorBlock(struct us_data *us, WORD phyblk)
{
	return MS_LibSetLogicalBlockMark(us, phyblk, MS_LB_INITIAL_ERROR);
}

/*
 * MS_LibScanLogicalBlockNumber()
 */
int MS_LibScanLogicalBlockNumber(struct us_data *us, WORD btBlk1st)
{
	WORD			PhyBlock, newblk, i;
	WORD			LogStart, LogEnde;
	MS_LibTypeExtdat	extdat;
	BYTE			buf[0x200];
	DWORD			count = 0, index = 0;

	for (PhyBlock = 0; PhyBlock < us->MS_Lib.NumberOfPhyBlock;) {
		MS_LibPhy2LogRange(PhyBlock, &LogStart, &LogEnde);

		for (i = 0; i < MS_PHYSICAL_BLOCKS_PER_SEGMENT;
			i++, PhyBlock++) {
			switch (MS_LibConv2Logical(us, PhyBlock)) {
			case MS_STATUS_ERROR:
				continue;
			default:
				break;
			}

			if (count == PhyBlock) {
				MS_LibReadExtraBlock(us, PhyBlock,
							0, 0x80, &buf);
				count += 0x80;
			}
			index = (PhyBlock % 0x80) * 4;

			extdat.ovrflg = buf[index];
			extdat.mngflg = buf[index+1];
			extdat.logadr = MemStickLogAddr(buf[index+2],
							buf[index+3]);

			if ((extdat.ovrflg & MS_REG_OVR_BKST) !=
				MS_REG_OVR_BKST_OK) {
				MS_LibSetAcquiredErrorBlock(us, PhyBlock);
				continue;
			}

			if ((extdat.mngflg & MS_REG_MNG_ATFLG) ==
				MS_REG_MNG_ATFLG_ATTBL) {
				MS_LibErasePhyBlock(us, PhyBlock);
				continue;
			}

			if (extdat.logadr != MS_LB_NOT_USED) {
				if ((extdat.logadr < LogStart) ||
					(LogEnde <= extdat.logadr)) {
					MS_LibErasePhyBlock(us, PhyBlock);
					continue;
				}

				newblk = MS_LibConv2Physical(us, extdat.logadr);

				if (newblk != MS_LB_NOT_USED) {
					if (extdat.logadr == 0) {
						MS_LibSetLogicalPair(us,
								extdat.logadr,
								PhyBlock);
						if (MS_LibCheckDisableBlock(us,
							btBlk1st)) {
							MS_LibSetLogicalPair(us,
							extdat.logadr, newblk);
							continue;
						}
					}

					MS_LibReadExtra(us, newblk, 0, &extdat);
					if ((extdat.ovrflg & MS_REG_OVR_UDST) ==
						MS_REG_OVR_UDST_UPDATING) {
						MS_LibErasePhyBlock(us,
								PhyBlock);
						continue;
					} else {
						MS_LibErasePhyBlock(us, newblk);
					}
				}

				MS_LibSetLogicalPair(us, extdat.logadr,
								PhyBlock);
			}
		}
	} /* End for ... */

	return MS_STATUS_SUCCESS;
}

/*
 * MS_LibAllocWriteBuf()
 */
int MS_LibAllocWriteBuf(struct us_data *us)
{
	us->MS_Lib.wrtblk = (WORD)-1;

	us->MS_Lib.blkpag = kmalloc(us->MS_Lib.PagesPerBlock *
					us->MS_Lib.BytesPerSector, GFP_KERNEL);
	us->MS_Lib.blkext = kmalloc(us->MS_Lib.PagesPerBlock *
					sizeof(MS_LibTypeExtdat), GFP_KERNEL);

	if ((us->MS_Lib.blkpag == NULL) || (us->MS_Lib.blkext == NULL)) {
		MS_LibFreeWriteBuf(us);
		return (DWORD)-1;
	}

	MS_LibClearWriteBuf(us);

	return 0;
}

/*
 * MS_LibClearWriteBuf()
 */
void MS_LibClearWriteBuf(struct us_data *us)
{
	int i;

	us->MS_Lib.wrtblk = (WORD)-1;
	MS_LibClearPageMap(us);

	if (us->MS_Lib.blkpag)
		memset(us->MS_Lib.blkpag, 0xff,
			us->MS_Lib.PagesPerBlock * us->MS_Lib.BytesPerSector);

	if (us->MS_Lib.blkext) {
		for (i = 0; i < us->MS_Lib.PagesPerBlock; i++) {
			us->MS_Lib.blkext[i].status1 = MS_REG_ST1_DEFAULT;
			us->MS_Lib.blkext[i].ovrflg = MS_REG_OVR_DEFAULT;
			us->MS_Lib.blkext[i].mngflg = MS_REG_MNG_DEFAULT;
			us->MS_Lib.blkext[i].logadr = MS_LB_NOT_USED;
		}
	}
}

/*
 * MS_LibPhy2LogRange()
 */
void MS_LibPhy2LogRange(WORD PhyBlock, WORD *LogStart, WORD *LogEnde)
{
	PhyBlock /= MS_PHYSICAL_BLOCKS_PER_SEGMENT;

	if (PhyBlock) {
		*LogStart = MS_LOGICAL_BLOCKS_IN_1ST_SEGMENT +
			(PhyBlock - 1) * MS_LOGICAL_BLOCKS_PER_SEGMENT;/*496*/
		*LogEnde = *LogStart + MS_LOGICAL_BLOCKS_PER_SEGMENT;/*496*/
	} else {
		*LogStart = 0;
		*LogEnde = MS_LOGICAL_BLOCKS_IN_1ST_SEGMENT;/*494*/
	}
}

/*
 * MS_LibReadExtraBlock()
 */
int MS_LibReadExtraBlock(struct us_data *us, DWORD PhyBlock,
				BYTE PageNum, BYTE blen, void *buf)
{
	struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf;
	int	result;

	/* printk("MS_LibReadExtraBlock --- PhyBlock = %x,
		PageNum = %x, blen = %x\n", PhyBlock, PageNum, blen); */

	/* Read Extra Data */
	memset(bcb, 0, sizeof(struct bulk_cb_wrap));
	bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
	bcb->DataTransferLength = 0x4 * blen;
	bcb->Flags			= 0x80;
	bcb->CDB[0]			= 0xF1;
	bcb->CDB[1]			= 0x03;
	bcb->CDB[5]			= (BYTE)(PageNum);
	bcb->CDB[4]			= (BYTE)(PhyBlock);
	bcb->CDB[3]			= (BYTE)(PhyBlock>>8);
	bcb->CDB[2]			= (BYTE)(PhyBlock>>16);
	bcb->CDB[6]			= blen;

	result = ENE_SendScsiCmd(us, FDIR_READ, buf, 0);
	if (result != USB_STOR_XFER_GOOD)
		return USB_STOR_TRANSPORT_ERROR;

	return USB_STOR_TRANSPORT_GOOD;
}

/*
 * MS_LibReadExtra()
 */
int MS_LibReadExtra(struct us_data *us, DWORD PhyBlock,
		BYTE PageNum, MS_LibTypeExtdat *ExtraDat)
{
	struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf;
	int	result;
	BYTE	ExtBuf[4];

	/* printk("MS_LibReadExtra --- PhyBlock = %x, PageNum = %x\n"
						, PhyBlock, PageNum); */
	memset(bcb, 0, sizeof(struct bulk_cb_wrap));
	bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
	bcb->DataTransferLength = 0x4;
	bcb->Flags			= 0x80;
	bcb->CDB[0]			= 0xF1;
	bcb->CDB[1]			= 0x03;
	bcb->CDB[5]			= (BYTE)(PageNum);
	bcb->CDB[4]			= (BYTE)(PhyBlock);
	bcb->CDB[3]			= (BYTE)(PhyBlock>>8);
	bcb->CDB[2]			= (BYTE)(PhyBlock>>16);
	bcb->CDB[6]			= 0x01;

	result = ENE_SendScsiCmd(us, FDIR_READ, &ExtBuf, 0);
	if (result != USB_STOR_XFER_GOOD)
		return USB_STOR_TRANSPORT_ERROR;

	ExtraDat->reserved = 0;
	ExtraDat->intr     = 0x80;  /* Not yet, waiting for fireware support */
	ExtraDat->status0  = 0x10;  /* Not yet, waiting for fireware support */
	ExtraDat->status1  = 0x00;  /* Not yet, waiting for fireware support */
	ExtraDat->ovrflg   = ExtBuf[0];
	ExtraDat->mngflg   = ExtBuf[1];
	ExtraDat->logadr   = MemStickLogAddr(ExtBuf[2], ExtBuf[3]);

	return USB_STOR_TRANSPORT_GOOD;
}

/*
 * MS_LibSetAcquiredErrorBlock()
 */
int MS_LibSetAcquiredErrorBlock(struct us_data *us, WORD phyblk)
{
	WORD log;

	if (phyblk >= us->MS_Lib.NumberOfPhyBlock)
		return (DWORD)-1;

	log = us->MS_Lib.Phy2LogMap[phyblk];

	if (log  < us->MS_Lib.NumberOfLogBlock)
		us->MS_Lib.Log2PhyMap[log] = MS_LB_NOT_USED;

	if (us->MS_Lib.Phy2LogMap[phyblk] != MS_LB_INITIAL_ERROR)
		us->MS_Lib.Phy2LogMap[phyblk] = MS_LB_ACQUIRED_ERROR;

	return 0;
}

/*
 * MS_LibErasePhyBlock()
 */
int MS_LibErasePhyBlock(struct us_data *us, WORD phyblk)
{
	WORD  log;

	if (phyblk >= us->MS_Lib.NumberOfPhyBlock)
		return MS_STATUS_ERROR;

	log = us->MS_Lib.Phy2LogMap[phyblk];

	if (log < us->MS_Lib.NumberOfLogBlock)
		us->MS_Lib.Log2PhyMap[log] = MS_LB_NOT_USED;

	us->MS_Lib.Phy2LogMap[phyblk] = MS_LB_NOT_USED;

	if (MS_LibIsWritable(us)) {
		switch (MS_ReaderEraseBlock(us, phyblk)) {
		case MS_STATUS_SUCCESS:
			us->MS_Lib.Phy2LogMap[phyblk] = MS_LB_NOT_USED_ERASED;
			return MS_STATUS_SUCCESS;
		case MS_ERROR_FLASH_ERASE:
		case MS_STATUS_INT_ERROR:
			MS_LibErrorPhyBlock(us, phyblk);
			return MS_ERROR_FLASH_ERASE;
		case MS_STATUS_ERROR:
		default:
			MS_LibCtrlSet(us, MS_LIB_CTRL_RDONLY);
			MS_LibSetAcquiredErrorBlock(us, phyblk);
			return MS_STATUS_ERROR;
		}
	}

	MS_LibSetAcquiredErrorBlock(us, phyblk);

	return MS_STATUS_SUCCESS;
}

/*
 * MS_LibErrorPhyBlock()
 */
int MS_LibErrorPhyBlock(struct us_data *us, WORD phyblk)
{
	if (phyblk >= us->MS_Lib.NumberOfPhyBlock)
		return MS_STATUS_ERROR;

	MS_LibSetAcquiredErrorBlock(us, phyblk);

	if (MS_LibIsWritable(us))
		return MS_LibOverwriteExtra(us, phyblk, 0,
				(BYTE)(~MS_REG_OVR_BKST & BYTE_MASK));


	return MS_STATUS_SUCCESS;
}

/*
 * MS_LibOverwriteExtra()
 */
int MS_LibOverwriteExtra(struct us_data *us, DWORD PhyBlockAddr,
				BYTE PageNum, BYTE OverwriteFlag)
{
	struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *) us->iobuf;
	int	result;

	/* printk("MS --- MS_LibOverwriteExtra,  \
		PhyBlockAddr = %x, PageNum = %x\n", PhyBlockAddr, PageNum); */
	result = ENE_LoadBinCode(us, MS_RW_PATTERN);
	if (result != USB_STOR_XFER_GOOD)
		return USB_STOR_TRANSPORT_ERROR;

	memset(bcb, 0, sizeof(struct bulk_cb_wrap));
	bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
	bcb->DataTransferLength = 0x4;
	bcb->Flags			= 0x80;
	bcb->CDB[0]			= 0xF2;
	bcb->CDB[1]			= 0x05;
	bcb->CDB[5]			= (BYTE)(PageNum);
	bcb->CDB[4]			= (BYTE)(PhyBlockAddr);
	bcb->CDB[3]			= (BYTE)(PhyBlockAddr>>8);
	bcb->CDB[2]			= (BYTE)(PhyBlockAddr>>16);
	bcb->CDB[6]			= OverwriteFlag;
	bcb->CDB[7]			= 0xFF;
	bcb->CDB[8]			= 0xFF;
	bcb->CDB[9]			= 0xFF;

	result = ENE_SendScsiCmd(us, FDIR_READ, NULL, 0);
	if (result != USB_STOR_XFER_GOOD)
		return USB_STOR_TRANSPORT_ERROR;

	return USB_STOR_TRANSPORT_GOOD;
}

/*
 * MS_LibForceSetLogicalPair()
 */
int MS_LibForceSetLogicalPair(struct us_data *us, WORD logblk, WORD phyblk)
{
	if (logblk == MS_LB_NOT_USED)
		return 0;

	if ((logblk >= us->MS_Lib.NumberOfLogBlock) ||
		(phyblk >= us->MS_Lib.NumberOfPhyBlock))
		return (DWORD)-1;

	us->MS_Lib.Phy2LogMap[phyblk] = logblk;
	us->MS_Lib.Log2PhyMap[logblk] = phyblk;

	return 0;
}

/*
 * MS_LibSetLogicalPair()
 */
int MS_LibSetLogicalPair(struct us_data *us, WORD logblk, WORD phyblk)
{
	if ((logblk >= us->MS_Lib.NumberOfLogBlock) ||
		(phyblk >= us->MS_Lib.NumberOfPhyBlock))
		return (DWORD)-1;

	us->MS_Lib.Phy2LogMap[phyblk] = logblk;
	us->MS_Lib.Log2PhyMap[logblk] = phyblk;

	return 0;
}

/*
 * MS_CountFreeBlock()
 */
int MS_CountFreeBlock(struct us_data *us, WORD PhyBlock)
{
	DWORD Ende, Count;

	Ende = PhyBlock + MS_PHYSICAL_BLOCKS_PER_SEGMENT;
	for (Count = 0; PhyBlock < Ende; PhyBlock++) {
		switch (us->MS_Lib.Phy2LogMap[PhyBlock]) {
		case MS_LB_NOT_USED:
		case MS_LB_NOT_USED_ERASED:
			Count++;
		default:
			break;
		}
	}

	return Count;
}

/*
 * MS_LibSearchBlockFromPhysical()
 */
int MS_LibSearchBlockFromPhysical(struct us_data *us, WORD phyblk)
{
	WORD			Newblk;
	WORD			blk;
	MS_LibTypeExtdat	extdat;

	if (phyblk >= us->MS_Lib.NumberOfPhyBlock)
		return MS_LB_ERROR;

	for (blk = phyblk + 1; blk != phyblk; blk++) {
		if ((blk & MS_PHYSICAL_BLOCKS_PER_SEGMENT_MASK) == 0)
			blk -= MS_PHYSICAL_BLOCKS_PER_SEGMENT;

		Newblk = us->MS_Lib.Phy2LogMap[blk];
		if (us->MS_Lib.Phy2LogMap[blk] == MS_LB_NOT_USED_ERASED)
			return blk;
		else if (us->MS_Lib.Phy2LogMap[blk] == MS_LB_NOT_USED) {
			switch (MS_LibReadExtra(us, blk, 0, &extdat)) {
			case MS_STATUS_SUCCESS:
			case MS_STATUS_SUCCESS_WITH_ECC:
				break;
			case MS_NOCARD_ERROR:
				return MS_NOCARD_ERROR;
			case MS_STATUS_INT_ERROR:
				return MS_LB_ERROR;
			case MS_ERROR_FLASH_READ:
			default:
				MS_LibSetAcquiredErrorBlock(us, blk);
				/* MS_LibErrorPhyBlock(fdoExt, blk); */
				continue;
			} /* End switch */

			if ((extdat.ovrflg & MS_REG_OVR_BKST) !=
						MS_REG_OVR_BKST_OK) {
				MS_LibSetAcquiredErrorBlock(us, blk);
				continue;
			}

			switch (MS_LibErasePhyBlock(us, blk)) {
			case MS_STATUS_SUCCESS:
				return blk;
			case MS_STATUS_ERROR:
				return MS_LB_ERROR;
			case MS_ERROR_FLASH_ERASE:
			default:
				MS_LibErrorPhyBlock(us, blk);
				break;
			}
		}
	} /* End for */

	return MS_LB_ERROR;
}

/*
 * MS_LibSearchBlockFromLogical()
 */
int MS_LibSearchBlockFromLogical(struct us_data *us, WORD logblk)
{
	WORD phyblk;

	phyblk = MS_LibConv2Physical(us, logblk);
	if (phyblk >= MS_LB_ERROR) {
		if (logblk >= us->MS_Lib.NumberOfLogBlock)
			return MS_LB_ERROR;

		phyblk = (logblk + MS_NUMBER_OF_BOOT_BLOCK) /
					MS_LOGICAL_BLOCKS_PER_SEGMENT;
		phyblk *= MS_PHYSICAL_BLOCKS_PER_SEGMENT;
		phyblk += MS_PHYSICAL_BLOCKS_PER_SEGMENT - 1;
	}

	return MS_LibSearchBlockFromPhysical(us, phyblk);
}