ms_drv.c

8032底层驱动部分。因为可以移植 所以单独来拿出来

/*****************************************************************************
*  Copyright Statement:
*  --------------------
*  This software is protected by Copyright and the information contained
*  herein is confidential. The software may not be copied and the information
*  contained herein may not be used or disclosed except with the written
*  permission of MediaTek Inc. (C) 2005
*
*  BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
*  THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
*  RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
*  AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
*  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
*  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
*  NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
*  SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
*  SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH
*  THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. MEDIATEK SHALL ALSO
*  NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO BUYER'S
*  SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN FORUM.
*
*  BUYER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND CUMULATIVE
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*  AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
*  OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO
*  MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE. 
*
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*****************************************************************************/

/*****************************************************************************
 *
 * Filename:
 * ---------
 *   ms_drv.c
 *
 * Project:
 * --------
 *   Maui_Software
 *
 * Description:
 * ------------
 *   Adaption driver of file system for Memory Stick
 *
 * Author:
 * -------
 * -------
 *
 *============================================================================
 *             HISTORY
 * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
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 *============================================================================ 
 ****************************************************************************/
#include "kal_release.h"
#include "app_buff_alloc.h"
#include "fat_fs.h"
#include "msdc_def.h"
#include "sd_def.h"
#include "ms_def.h"

#if defined(__MSDC_MS__)

#define MAX_CLUSTERS (0x0FFF6 - 2)
#define SECTOR_SIZE 512	
#define MSDC_MEDIA_DESCRIPTOR		0xF8
#define MAX_TRY	3

static int  ReadSectors(void * DriveData, DWORD Sector, UINT Sectors, void * Buffer);
static int  WriteSectors(void * DriveData, DWORD Sector, UINT Sectors, void * Buffer);

kal_uint8 MS_MBR[MS_SUPPORT_TYPES][MS_MBR_SIZE] = {
{ 0x80, 0x01, 0x0C, 0x00, 0x01, 0x01, 0x10, 0xF5, 0x1B, 0x00, 0x00, 0x00, 0xA5, 0x1E, 0x00, 0x00},
{ 0x80, 0x01, 0x0A, 0x00, 0x01, 0x01, 0x50, 0xED, 0x19, 0x00, 0x00, 0x00, 0xA7, 0x3D, 0x00, 0x00},
{ 0x80, 0x01, 0x0A, 0x00, 0x01, 0x03, 0x50, 0xED, 0x19, 0x00, 0x00, 0x00, 0x67, 0x7B, 0x00, 0x00},
{ 0x80, 0x01, 0x04, 0x00, 0x01, 0x03, 0xD0, 0xDD, 0x13, 0x00, 0x00, 0x00, 0x6D, 0xF7, 0x00, 0x00},
{ 0x80, 0x02, 0x08, 0x00, 0x01, 0x07, 0xD0, 0xDD, 0x27, 0x00, 0x00, 0x00, 0xD9, 0xEE, 0x01, 0x00},
{ 0x80, 0x02, 0x02, 0x00, 0x06, 0x0F, 0xD0, 0xDD, 0x21, 0x00, 0x00, 0x00, 0xDF, 0xDD, 0x03, 0x00}
};


__align(4) kal_uint8 MS_buffer[16*1024];

/*-----------------------------------*/
kal_uint16 MS_GetLPIndex(kal_uint32 ladrs)
{
	kal_uint8	seg;
	kal_uint16 min;

	seg = (ladrs < 494)?0:((ladrs-494)/496 + 1);
	min = (seg == 0)?0:(seg*496-2);		

	return ladrs - min;
	
}

#if defined(MS_FORMAT)
static int MS_MountDevice(int DeviceType)
{
	kal_uint8 *sector = (kal_uint8*)MSDC_Sector;
	FS_MasterBootRecord *MBR;
	FS_BootRecord *PBR;
	int status;	
	kal_bool IsMBRExist;
   kal_uint8 type = 0;
   kal_uint8 c = gMS.Capacity;
   	
   // get index for MS_MBR => (type) is the index
   while((c >>= 1) != 2)
   	type++;	   
	
	IsMBRExist = KAL_FALSE;
	// read MBR at sector 0
	status = ReadSectors(NULL,0,1,(void*)sector);	  		
	MBR = (FS_MasterBootRecord*)sector;
	PBR = (FS_BootRecord*)sector;
	if( MBR->Signature == 0xAA55 &&
		MBR->PTable[0].BootIndicator == 0x80)
	{
		IsMBRExist = KAL_TRUE;
	}
	if(!IsMBRExist)
	{	
		// create MBR
		kal_mem_set((void*)MBR,0,sizeof(MBR));
		kal_mem_cpy((void*)&(MBR->PTable[0]),MS_MBR[type],MS_MBR_SIZE);
		MBR->Signature = 0xAA55;
		status = WriteSectors(NULL,0,1,(void*)sector);
		if(status < NO_ERROR)
			return FS_MSDC_MOUNT_ERROR;
		// create PBR
		FS_CreateBootSector((void*)sector, (FS_PartitionRecord*)MS_MBR[type], (BYTE)MSDC_MEDIA_DESCRIPTOR, 
			(UINT)gMS.PagesPerBlk, (gMS.Capacity < 128)?FS_FMT_FAT_12:FS_FMT_FAT_16);
		PBR->NearJump[0] = 0xE9;
		PBR->NearJump[1] = 0x00;
		PBR->NearJump[2] = 0x00;
		kal_mem_set((void*)PBR->BP.OEMName,0x20,8);
		PBR->BP.SectorsPerCluster = gMS.PagesPerBlk;
		PBR->BP.DirEntries = 0x200;
		PBR->BP.E._16.BPB.PhysicalDiskNumber = 0;
		PBR->BP.E._16.BPB.CurrentHead = 0;
		PBR->BP.E._16.BPB.SerialNumber = 0;
		kal_mem_set((void*)PBR->BP.E._16.BPB.Label,0x20,11);	
		status = WriteSectors(NULL, PBR->BP.NumberOfHiddenSectors,1,(void*)sector);
		if(status < NO_ERROR)
			return FS_MSDC_MOUNT_ERROR;
		
	}
	
	return FS_NO_ERROR;
}
#endif	

static int  DiscardSectors(void * DriveData, DWORD Sector, UINT Sectors)
{
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   return FS_NO_ERROR;