interface.c~

嵌入式文件系统 EFSL 0.3.5 / 嵌入式文件系统 EFSL 0.3.5

/*****************************************************************************\
*                     EFSL - Embedded Filesystems Library                     *
*                     -----------------------------------                     *
*                                                                             *
* Filename : interface.c                                                      *
* Release  : 0.3 - devel                                                      *
* Description : This file defines the general I/O interface functions         *
*               that can be performed on hardware.                            *
*                                                                             *
* 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"

esint8 if_init(Interface *iface, void* hwData,
                                              esint8 (*initInterface)(void*),
                                              esint8 (*readBuf) (void*, euint32,euint8*),
                                              esint8 (*writeBuf) (void*, euint32,euint8*),
					      esint8 (*ioctl) (void*,euint16,void*))
{
	esint8 r;
	
	iface->flags=0;
	iface->sectorCount=0;
	iface->interface_data=hwData;
#ifdef MULTIPLE_INTERFACE_SUPPORT
	iface->initInterface=initInterface;
	iface->readBuf=readBuf;
	iface->writeBuf=writeBuf;
	iface->ioctl=ioctl;
	r=iface->initInterface(iface->interface_data);
#else
	r=HWIFUNC_INIT(iface->interface_data);
#endif

	if(!r){ /* Init OK, try to get some info */
		if(iface->ioctl(iface->interface_data,IOCTL_SECTORCOUNT,(void*)&(iface->sectorCount))){
			iface->sectorCount=0; /* Device doesn't know */
		}
	}
	return(r);
}

esint8 if_readBuf(Interface *iface, euint32 address, euint8* buf)
{
#ifdef MULTIPLE_INTERFACE_SUPPORT
	return(iface->readBuf(iface->interface_data,address,buf)); 
#else
	return(HWIFUNC_READ(iface->interface_data,address,buf));
#endif
}


esint8 if_writeBuf(Interface *iface, euint32 address, euint8* buf)
{
#ifdef MULTIPLE_INTERFACE_SUPPORT
	return(iface->writeBuf(iface->interface_data,address,buf));
#else
	return(HWIFUNC_WRITE(iface->interface_data,address,buf));
#endif
}