/*****************************************************************************\*                     EFSL - Embedded Filesystems Library                     **                     -----------------------------------                     **                                                                             ** Filename : ioman_small.c                                                    ** Release  : 0.3 - devel                                                      ** Description : The IO Manager receives all requests for sectors in a central **               allowing it to make smart decision regarding caching.         **               The IOMAN_NUMBUFFER parameter determines how many sectors     **               ioman can cache. ioman also supports overallocating and       **               backtracking sectors.                                         **               This is the small version of IOMan, for systems with limited  **               resources. It features only one fixed buffer, and has         **               simplified operation                                          **                                                                             ** 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; version 2                     ** of the License.                                                             **                                                                             ** 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.                                **                                                                             ** As a special exception, if other files instantiate templates or             ** use macros or inline functions from this file, or you compile this          ** file and link it with other works to produce a work based on this file,     ** this file does not by itself cause the resulting work to be covered         ** by the GNU General Public License. However the source code for this         ** file must still be made available in accordance with section (3) of         ** the GNU General Public License.                                             **                                                                             ** This exception does not invalidate any other reasons why a work based       ** on this file might be covered by the GNU General Public License.            **                                                                             **                                                    (c)2006 Lennart Yseboodt **                                                    (c)2006 Michael De Nil   *\*****************************************************************************/#include "interface.h"#include "error.h"#include "plibc.h"#include "debug.h"#include "types.h"#include "config.h"#define IOMAN_STATUS_ATTR_VALIDDATA  0#define IOMAN_STATUS_ATTR_USERBUFFER 1#define IOMAN_STATUS_ATTR_WRITE      2#define IOM_MODE_READONLY  1#define IOM_MODE_READWRITE 2#define IOM_MODE_EXP_REQ   4struct _IOManStack{	euint32 sector;	euint8  status;};typedef struct _IOManStack IOManStack;struct _IOManager{	Interface *iface;		euint8 bufptr[512];			IOMAN_ERR_EUINT8			euint32 sector;	euint8  status;	euint8  itptr;	IOManStack stack;};typedef struct _IOManager IOManager;#define IOBJ ioman#define ioman_isValid() ioman_getAttr(IOBJ,IOMAN_STATUS_ATTR_VALIDDATA)#define ioman_isUserBuf() ioman_getAttr(IOBJ,IOMAN_STATUS_ATTR_USERBUFFER)#define ioman_isWritable() ioman_getAttr(IOBJ,IOMAN_STATUS_ATTR_WRITE)#define ioman_setValid() ioman_setAttr(IOBJ,IOMAN_STATUS_ATTR_VALIDDATA,1)#define ioman_setUserBuf() ioman_setAttr(IOBJ,IOMAN_STATUS_ATTR_USERBUFFER,1)#define ioman_setWritable() ioman_setAttr(IOBJ,IOMAN_STATUS_ATTR_WRITE,1)#define ioman_setNotValid() ioman_setAttr(IOBJ,IOMAN_STATUS_ATTR_VALIDDATA,0)#define ioman_setNotUserBuf() ioman_setAttr(IOBJ,IOMAN_STATUS_ATTR_USERBUFFER,0)#define ioman_setNotWritable() ioman_setAttr(IOBJ,IOMAN_STATUS_ATTR_WRITE,0)#define ioman_isReqRo(mode)  ((mode)&(IOM_MODE_READONLY))#define ioman_isReqRw(mode)  ((mode)&(IOM_MODE_READWRITE))#define ioman_isReqExp(mode) ((mode)&(IOM_MODE_EXP_REQ))esint8 ioman_init(IOManager *ioman, Interface *iface, euint8* bufferarea);void ioman_reset(IOManager *ioman);void ioman_setAttr(IOManager *ioman,euint8 attribute,euint8 val);euint8 ioman_getAttr(IOManager *ioman,euint8 attribute);