mmc_cmd.c

MMC 0.4.0驱动 龙珠 MOTO板子

/*
 * 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
 * (at your option) 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.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Copyright (C) 2002 Freescale Semiconductors HK Ltd
 *
 */

/******************************************************************************
 * 
 * Copyright (C) 2001, Freescale All Rights Reserved
 * 
 * File Name:   mmcsd_cmd.c
 * 
 * Progammers:  Yiwei Zhao 
 *
 * Date of Creations:   30  DEC,2001
 *
 * Synopsis:
 *
 * Modification History:
 * 30 DEC, 2001
 *
 *****************************************************************************/

#include "dbmx1_type.h"
#include "mmc_def.h"
#include "mmc_main.h"

/* Functions List:      
 *
 */

/******************************************************************************
 * Function Name: _MMCSD_GoIdleState
 *
 * Input:               None.
 *
 * Value Returned:     
 *
 * 	MMCSD_STATUS
 *
 * Description: 
 *	Resets all cards to idle state
 *
 * Modification History:
 *      30 DEC,2001, Initial version.                   Yiwei Zhao 
 *****************************************************************************/

MMCSD_STATUS _MMCSD_GoIdleState(int port)
{
	MMCSD_STATUS ret;
	ret=_MMCSD_NoDataCommand(MMCSD_CMD0,0,MMCSDB_INIT,port);
	return ret;
}

/******************************************************************************
 * Function Name: _MMCSD_SendOpCond
 *
 * Input:               
 * 		voltage
 *
 * Value Returned:     
 *
 * Description: 
 *	Ask all cards in idle state to send their operation conditions register
 *	contern in response on the CMD line.
 *
 * Modification History:
 *      30 DEC,2001, Initial version.                   Yiwei Zhao 
 *****************************************************************************/

MMCSD_STATUS _MMCSD_SendOpCond(u32 voltage,int port)
{
	 MMCSD_Responses rp;
	 MMCSD_STATUS ret;
	 
	 //voltage = 0xFFFFFF0;
	 ret=_MMCSD_NoDataCommand(MMCSD_CMD1,voltage,MMCSDB_R3,port);

	 //TRACE("The Response is ...");
	 _MMCSD_GetResponses(&rp,MMCSDB_R3,port);

	 if(ret) 
	 {
		 TRACE("CMD1 failed with ret = 0x%lx",ret);
	 	 return ret; //meet some error 
	 }
	 	

     if((rp.OCR&0x80000000)==0)
     	return MMCSD_CARD_BUSY;
     else 
	 {
	 	//TRACE("OCR is %lx",rp.OCR);
     		return 0;
	 }
	
}

/******************************************************************************
 * Function Name: _MMCSD_AllSendCID
 *
 * Input:             
 * 		UINT8 * pCidBuff
 *
 * Value Returned:     
 *
 * 	MMCSD_STATUS
 *
 * Description: 
 *
 *	CMD2:  Ask all cards to send their CID numbers on rhe CMD line	
 *
 * Modification History:
 *      30 DEC,2001, Initial version.                   Yiwei Zhao 
 *****************************************************************************/
/*****************************************************************************  
                  
    CID Register:(Bit)    127   119 111  103 95  87   79  71    63  55  47  39  31  15  7   0
    ------------------------------------------------------------------------------------------
	CID Register          |MID  |  OID   |        PNM               |     PSN       |MDT| CRC|
	-------------------------------------------------------------------------------------------
	pCidBuff    :(BYTE)   |  0  | 1 |  2 | 4 | 5 | 7 | 8  |  9  | 10| 11| 12|13| 14 | 15 | 16|
	

******************************************************************************/
MMCSD_STATUS _MMCSD_AllSendCID(u8 *pCidBuff,int port)
{
	MMCSD_Responses rp;
	MMCSD_STATUS ret;
	int i;
		
	ret=_MMCSD_NoDataCommand(MMCSD_CMD2,0,MMCSDB_R2,port);
	
	if(ret)
	{
		FAILED("Command 2 returns with 0x%x \n",ret);
		return ret;
	}
	
	_MMCSD_GetResponses(&rp,MMCSDB_R2,port);

	for(i=0;i<16;i++)
	{
		pCidBuff[i]=rp.CID[i];
	}
	return 0;
}

/******************************************************************************
 * Function Name: _MMCSD_SetRelativeAddr
 *
 * Input:          
 * 		addr		relative address
 *
 * Value Returned:     
 *
 * 	MMCSD_STATUS
 *
 * Description: 
 * 	
 * 	Assigns relative address to the card
 *
 * Modification History:
 *      30 DEC,2001, Initial version.                   Yiwei Zhao 
 *
 * Qeustion:
 *
 * 	assigned or generated by itself?
 *
 *****************************************************************************/
MMCSD_STATUS _MMCSD_SetRelativeAddr(u32 addr,int port)
{
	MMCSD_Responses rp;
	MMCSD_STATUS ret;

	ret=_MMCSD_NoDataCommand(MMCSD_CMD3,addr<<16,MMCSDB_R1,port);

	if(ret)
		return ret;
	
	_MMCSD_GetResponses(&rp,MMCSDB_R1,port);
	

	return rp.status&MMCSD_STATUS_NOERROR;

}

/******************************************************************************
 * Function Name: _MMCSD_SelectDeselectCard
 *
 * Input:           
 *
 * 		addr:		relative address
 *
 * Value Returned:     
 *
 * 	MMCSD_STATUS
 *
 * Description: 
 *
 * Modification History:
 *      30 DEC,2001, Initial version.                   Yiwei Zhao 
 *****************************************************************************/
MMCSD_STATUS _MMCSD_SelectDeselectCard(u32 addr,u32 port)
{
	MMCSD_Responses rp;
	MMCSD_STATUS ret;

	if(addr!=0)
		ret=_MMCSD_NoDataCommand(MMCSD_CMD7,addr<<16,0x40|MMCSDB_R1,port);
	else
		ret=_MMCSD_NoDataCommand(MMCSD_CMD7,0,0x40,port);
	
	if(ret)
		return ret;
	
	_MMCSD_GetResponses(&rp,MMCSDB_R1,port);
	

	return rp.status&MMCSD_STATUS_NOERROR;

}

/******************************************************************************
 * Function Name: _MMCSD_SendCSD
 *
 * Input:      
 * 		addr:	relative address.
 *
 * Value Returned:     
 *
 * 	MMCSD_STATUS
 *
 * Description: 
 *		CMD9:       Addressed card sends its card-specific data(CSD) 
 * Modification History:
 *      30 DEC,2001, Initial version.                   Yiwei Zhao 
 *****************************************************************************/
/*****************************************************************************

CSD Register                                         
-----------------------------------------------------------------------------
Name                        | Width| CSD_Slice|    pCsdbuff (BYTE)   
-----------------------------------------------------------------------------
CSD struction				   2     127:126       
System spec. version           4     125:122           0
reserved                       2     121:120 
-----------------------------------------------------------------------------
data read access time 1        8     119:112           1
-----------------------------------------------------------------------------
data read access time 2        8     111:104           2
-----------------------------------------------------------------------------
Max data transfer rate         8     103:96            3
-----------------------------------------------------------------------------
card command classes           12     95:84            4
max read data block length     4      83:80            5
------------------------------------------------------------------------------
partial blocks for read length  1     79:79         
wirte block misalignment        1     78:78         
read block misalignment         1     77:77
DSR implemented                 1     76:76
reserved                        2     75:74
device size                    12     73:62            6-7
max read current                3     61:69
max read current                3     58-56            8
------------------------------------------------------------------------------
max write current               3     55-53
max write current               3     52-50
device size multiplier          3     49-47            9
erase sector size               5     46-42            
erase group size                5     41-37            10
write protect group size        5     36-32            11
------------------------------------------------------------------------------
write protect group enable      1     31:31
manufactuter default ECC        2     30:29
write speed factor              3     28:26
max. write data block length    4     25:22             12
partial blocks for write allowed 1    21:21
reserved                         5    20:16             13
------------------------------------------------------------------------------
File format group               1     15:15            
copy flag                       1     14:14
permanent write protection      1     13:13 
temporary write protection      1     12:12
file format                     2     11:10
ECC code                        2      9:8              14
--------------------------------------------------------------------------------
CRC                             7      7:1
Not used   always '1'           1      0:0              15
-------------------------------------------------------------------------------
 
******************************************************************************/
MMCSD_STATUS _MMCSD_SendCSD(u32 addr,u8* pBuff,u32 port)
{
	MMCSD_Responses rp;
	MMCSD_STATUS ret;
	int i;
	
	ret=_MMCSD_NoDataCommand(MMCSD_CMD9,addr<<16,MMCSDB_R2,port);
	
	if(ret)
		return ret;
	
	_MMCSD_GetResponses(&rp,MMCSDB_R2,port);

	for(i=0;i<16;i++)
	{
		pBuff[i]=rp.CSD[i];
		TRACE(" %02x", pBuff[i]);
	}
	
	return 0;
}

/******************************************************************************
 * Function Name: _MMCSD_SendCID
 *
 * Input:          
 *		addr:		relative address.
 *
 * Value Returned:     
 *
 * 	MMCSD_STATUS
 *
 * Description: 
 *		CMD10: Addressed card sends its card-specific data(CSD) 
 *
 * Modification History:
 *      30 DEC,2001, Initial version.                   Yiwei Zhao 
 *****************************************************************************/
MMCSD_STATUS _MMCSD_SendCID(u32 addr,u8 * pBuff,u32 port)
{
	MMCSD_Responses rp;
	MMCSD_STATUS ret;
	int i;
	
	ret=_MMCSD_NoDataCommand(MMCSD_CMD10,addr<<16,MMCSDB_R2,port);
	
	if(ret)
		return ret;
		
	_MMCSD_GetResponses(&rp,MMCSDB_R2,port);
	for(i=0;i<16;i++)
	{
		pBuff[i]=rp.CID[i];
	}
	
	return 0;
}

/******************************************************************************
 * Function Name: _MMCSD_SendStatus
 *
 * Input:               .
 *
 * Value Returned:     
 *
 * 	MMCSD_STATUS
 *
 * Description: CMD13	addressed card sends its status register
 *
 * Modification History:
 *      30 DEC,2001, Initial version.                   Yiwei Zhao 
 *****************************************************************************/
MMCSD_STATUS  _MMCSD_SendStatus(u32 addr,u32 *pStatus,u32 port)
{
	MMCSD_Responses rp;
	MMCSD_STATUS ret;
	
	ret=_MMCSD_NoDataCommand(MMCSD_CMD13,addr<<16,MMCSDB_R1,port);
	if(ret)
	{
		//FAILED("CMD13 Failed with ret = 0x%x",ret);
		*pStatus = ret;
		return ret;
	}
	
	_MMCSD_GetResponses(&rp,MMCSDB_R1,port);
	
	*pStatus=rp.status;
	
	return ((rp.status)&MMCSD_STATUS_NOERROR);

}

/******************************************************************************
 * Function Name: _MMCSD_SetBlockLen
 *
 * Input:               None.
 *
 * Value Returned:     
 *
 * 	MMCSD_STATUS
 *
 * Description: 
 *
 * Modification History:
 *      30 DEC,2001, Initial version.                   Yiwei Zhao 
 *****************************************************************************/
MMCSD_STATUS _MMCSD_SetBlockLen(u32 size, u32 num,u32 port)
{
	MMCSD_Responses rp;
	MMCSD_STATUS ret;
	
	_MMCSD_SetBlockLenReg(size,port);
	_MMCSD_SetNumberOfBlockReg(num,port);

	ret=_MMCSD_NoDataCommand(MMCSD_CMD16,size,MMCSDB_R1,port);

	if(ret)
	{
		FAILED("setBlockLen ret= %x \n",ret);
		return ret;
	}
	_MMCSD_GetResponses(&rp,MMCSDB_R1,port);
	
	return rp.status&MMCSD_STATUS_NOERROR;
}

/******************************************************************************
 * Function Name: _MMCSD_TagSectorStart
 *
 * Input:            U32  addr       address
 *
 * Value Returned:     
 *
 * 	MMCSD_STATUS
 *
 * Description: 
 *	CMD33  Sets the address of the first sector of the erase group
 *
 * Modification History:
 *      30 DEC,2001, Initial version.                   Yiwei Zhao 
 *****************************************************************************/
MMCSD_STATUS _MMCSD_TagSectorStart(u32 addr)
{
	MMCSD_Responses rp;
	MMCSD_STATUS ret;
	
	ret=_MMCSD_NoDataCommand(MMCSD_CMD32,addr,MMCSDB_R1,0);	
	
	if(ret)
		return ret;
	
	_MMCSD_GetResponses(&rp,MMCSDB_R1,0);