flbase.c

H3 M-system NAND flash driver in Linux OS, M-DOC driver

/******************************************************************************
 *                                                                            *
 * Project: DOC Driver for Linux 2.4 Block device driver for mDOC H3  family  *
 * of devices under Linux kernel 2.4.                                         *
 *                                                                            *
 *   Version: 1.0                                                             *
 *   Email questions to: [e-mail]                               *
 *   Copyright (C) SanDisk IL Ltd. 1995 - 2007                                *
 *   SanDisk IL Ltd., 7 Atir Yeda Street, Kfar Saba 44425, Israel             *
 *                                                                            *
 ******************************************************************************
 *                                                                            *
 * This program is free software; you can redistribute it and/or modify it    *
 * under the terms of the GNU General Public License as published by the Free *
 * Software Foundation; either version 2 of the License, or any later version.*
 * This program is distributed in the hope that 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, which is set forth in the readme.txt file.                   *
 * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA                    *
 *                                                                            *
 * This License does not grant you any right to use the trademarks, service   *
 * marks or logos of SanDisk IL Ltd. or SanDisk Corporation.                  *
 * Subject to the foregoing, SanDisk IL Ltd., for itself and on behalf of its *
 * licensors, hereby reserves all intellectual property rights in the program,*
 * except for the rights expressly granted in this License.                   *
 *                                                                            *
 ******************************************************************************/
/*
 * $Log:   V:/PVCSDB/DiskOnChip/archives/Testing/TrueFFS 6.3/Drop 2.5/3/common/flbase.c-arc  $
 * 
 *    Rev 1.3   Sep 11 2006 13:45:20   yaniv.iarovici
 * Legal header added
 * 
 *    Rev 1.2   Aug 09 2006 16:52:48   Polina.Marimont
 * initial for DOC Driver 1.0
 */

#include "flbase.h"


void toUNAL(FLByte FAR0 *unal, FLWord n)
{
  unal[0] = FL2BYTE(n);
  unal[1] = FL2BYTE(n >> 8);
}


FLWord fromUNAL(FLByte const FAR0 *unal)
{
  return ((FLWord)unal[1] << 8) + unal[0];
}


/* calling another routines looks nice, but it is slower */

void toUNALLONG(FLByte FAR0 *le, FLDword n)
{
  le[0] = FL2BYTE(n);
  le[1] = FL2BYTE(n >> 8);
  le[2] = FL2BYTE(n >> 16);
  le[3] = FL2BYTE(n >> 24);
}

FLDword fromUNALLONG(FLByte const FAR0 *le)
{
  return ((FLDword)le[3] << 24) +
	 ((FLDword)le[2] << 16) +
	 ((FLDword)le[1] << 8) +
	 le[0];
}