/*****************************************************************************
*  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
*  LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
*  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. 
*
*  THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
*  WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF
*  LAWS PRINCIPLES.  ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND
*  RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER
*  THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC).
*
*****************************************************************************/

/*****************************************************************************
 *
 * Filename:
 * ---------
 *   ms_drv.c
 *
 * Project:
 * --------
 *   Maui_Software
 *
 * Description:
 * ------------
 *   Adaption driver of file system for SD card
 *
 * 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"
#include "intrCtrl.h"

#if defined(__MSDC_SD_MMC__)

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

static int  ReadSectors(void * DriveData, DWORD Sector, UINT Sectors, void * Buffer);
static int  WriteSectors(void * DriveData, DWORD Sector, UINT Sectors, void * Buffer);
static kal_uint32 sd_r,sd_w;
#if 0
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#endif

static int  DiscardSectors(void * DriveData, DWORD Sector, UINT Sectors)
{
#if 0
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#endif
   return FS_NO_ERROR;
}

/*-----------------------------------*/
static int  ReadSectors(void * DriveData, DWORD Sector, UINT Sectors, void * Buffer)
{
	
	SDC_CMD_STATUS status;
	kal_uint8 retry = 0;

	// kal_prompt_trace(MOD_AUD,"R: %d, %d",Sector Sectors);
	//dbg_print("R: %x, %x\r\n",Sector, Sectors);
	gMSDC_Handle.timeout_count = 0;
start:
	if(!gMSDC_Handle.mIsInitialized)
	{
		//dbg_print("Read but not Initialized \r\n");
		MSDC_PDNControl(KAL_TRUE);
		return FS_MSDC_READ_SECTOR_ERROR;
	}
	retry ++;
	MSDC_PDNControl(KAL_FALSE);
	if(Sectors > 1)
		status = SD_ReadMultiBlock((kal_uint32)Sector*SECTOR_SIZE,(kal_uint32*)Buffer,(kal_uint32)Sectors);
	else
		status = SD_ReadSingleBlock((kal_uint32)Sector*SECTOR_SIZE,(kal_uint32*)Buffer);
	if(status != NO_ERROR)
	{		
		sd_r++;
		//dbg_print("read retry:%d,status:%d,total %d\r\n",retry,status,sd_r);
		if(status == ERR_CMD_TIMEOUT || status == MSDC_GPT_TIMEOUT_ERR)
			gMSDC_Handle.timeout_count++;
		if(gMSDC_Handle.timeout_count == 3 && gMSDC_Handle.mIsPresent == KAL_TRUE)
		{
			kal_print("[MSDC]:re-mount(read fail)");
			gMSDC_Handle.mIsInitialized = KAL_FALSE;
			retry = 0;
			if(SD_Initialize() != NO_ERROR)
			{
				MSDC_PDNControl(KAL_TRUE);
				return FS_MSDC_READ_SECTOR_ERROR;
			}
		}
		if(retry >= SD_MAX_RETRY)
		{
			MSDC_PDNControl(KAL_TRUE);
			return FS_MSDC_READ_SECTOR_ERROR;
		}
		else
		{
			// kal_prompt_trace(MOD_AUD,"CRC etry:%d,status:%d",retry,status);
			goto start;			
		}
	}
	MSDC_PDNControl(KAL_TRUE);
   return FS_NO_ERROR;
}

/*-----------------------------------*/
static int  WriteSectors(void * DriveData, DWORD Sector, UINT Sectors, void * Buffer)
{
	SDC_CMD_STATUS status;
	kal_uint8 retry = 0;
	
	//dbg_print("W: %x, %x\r\n",Sector, Sectors);
	gMSDC_Handle.timeout_count = 0;	
start:
	if(!gMSDC_Handle.mIsInitialized)
	{
		//dbg_print("Write but not Initialized \r\n");
		MSDC_PDNControl(KAL_TRUE);
		return FS_MSDC_WRITE_SECTOR_ERROR;
	}
	retry++;
	MSDC_PDNControl(KAL_FALSE);
	if(Sectors > 1)
	{
		if(gMSDC_Handle.mMSDC_type == SD_CARD)
			SD_SetPreEraseBlk(Sectors);		
		status = SD_WriteMultiBlock((kal_uint32)Sector*SECTOR_SIZE,(kal_uint32*)Buffer,(kal_uint32)Sectors);
	}
	else
		status = SD_WriteSingleBlock((kal_uint32)Sector*SECTOR_SIZE,(kal_uint32*)Buffer);	
	if(status != NO_ERROR)
	{
		sd_w++;
		//dbg_print("write retry:%d,status:%d,total %d\r\n",retry,status,sd_w);
		if(status == ERR_CMD_TIMEOUT || status == MSDC_GPT_TIMEOUT_ERR)
			gMSDC_Handle.timeout_count++;
		if(gMSDC_Handle.timeout_count == 3 && gMSDC_Handle.mIsPresent == KAL_TRUE)
		{
			kal_print("[MSDC]:SD re-mount (write fail)");
			gMSDC_Handle.mIsInitialized = KAL_FALSE;
			retry = 0;
			if(SD_Initialize() != NO_ERROR)
			{
				MSDC_PDNControl(KAL_TRUE);
				return FS_MSDC_WRITE_SECTOR_ERROR;
			}
		}		
		if(retry >= SD_MAX_RETRY)
		{
			MSDC_PDNControl(KAL_TRUE);
			return FS_MSDC_WRITE_SECTOR_ERROR;
		}
		else
		{
			// kal_prompt_trace(MOD_AUD,"CRC write Error retry %d",retry);
			goto start;			
		}
	}
	MSDC_PDNControl(KAL_TRUE);
   return FS_NO_ERROR;
}

/*-----------------------------------*/
static int  MountDevice(void * DriveData, int DeviceNumber, int DeviceType, DWORD Flags)
{	
	kal_uint8 retry = 0;

	//dbg_print("MountDevice_SD \r\n");
	
	if(gMSDC_Handle.mIsInitialized)
		return SECTOR_SIZE;
		
start:		
	if(!gMSDC_Handle.mIsPresent)
	{		
		//dbg_print("not present \r\n");
		
		#if defined(_NAND_FLASH_BOOTING_)
		// add the following code for solving plug in or out the SD card during 
		// NFB loading process. The card detection interruptwill disapperared 		 
		// while interrupt controller is masked.
		IRQMask(IRQ_MSDC_CODE);
		if(*(volatile kal_uint16*)MSDC_PS & MSDC_PS_PIN0)
		{
			if(gMSDC_Handle.ins_level == MSDC_IOCTRL_PULL_UP)
				gMSDC_Handle.mIsPresent = KAL_FALSE;	
			else
				gMSDC_Handle.mIsPresent = KAL_TRUE;	
		}
		else
		{
			if(gMSDC_Handle.ins_level == MSDC_IOCTRL_PULL_UP)
				gMSDC_Handle.mIsPresent = KAL_TRUE;
			else
				gMSDC_Handle.mIsPresent = KAL_FALSE;	
		}
		IRQUnmask(IRQ_MSDC_CODE);
		#endif // _NAND_FLASH_BOOTING_
		
		if(!gMSDC_Handle.mIsPresent)	
		{
			MSDC_PDNControl(KAL_TRUE);			
			return FS_MSDC_MOUNT_ERROR;
		}
	}
	MSDC_PDNControl(KAL_FALSE);
	if(SD_Initialize() != NO_ERROR)
	{		
		goto err_exit;
	}	
	//if(SD_MountDevice(DeviceType) != FS_NO_ERROR)
		//return FS_MSDC_MOUNT_ERROR;

	//dbg_print("Mount success! \r\n");
	MSDC_PDNControl(KAL_TRUE);
   return SECTOR_SIZE;
   
err_exit:
	if(retry++ <= SD_MAX_RETRY)
	{
		//dbg_print("SD MountDevice failed! retry: %d \r\n",retry);
		goto start;
	}
	#if defined(__MSDC_NOT_SUPPORT_HOT_PLUG__)
	gMSDC_Handle.mIsPresent = KAL_FALSE;
	#endif	
	
	MSDC_PDNControl(KAL_TRUE);
	return FS_MSDC_MOUNT_ERROR;
	
}

/*-----------------------------------*/
static int  MediaChanged(void * DriveData)
{
   //dbg_print("MediaChanged\n\r");
	if(gMSDC_Handle.mIsPresent)
	{
		if(gMSDC_Handle.mIsInitialized)
		{
		   //dbg_print("Ready\n\r");
   		return FS_NO_ERROR;
		}
		else
		{
		   //dbg_print("Not Init\n\r");
			return FS_MSDC_PRESNET_NOT_READY;
		}
	}

   //dbg_print("No card\n\r");
	return FS_MSDC_NOT_PRESENT;
}

/*-----------------------------------*/
static int  GetDiskGeometry(void * DriveData, FS_PartitionRecord * DiskGeometry, BYTE * MediaDescriptor)
{
	
   kal_mem_set((void*)DiskGeometry, 0, sizeof * DiskGeometry);
   DiskGeometry->Sectors = gSD.mCSD.capacity/512;
   // 0xF8 is the standard value for fixed media, 0xF0 is for removable media.
   // The important point is whatever value is put in here must also be put in the first
   // byte of he FAT[0].
	*MediaDescriptor = MSDC_MEDIA_DESCRIPTOR;
	if(gSD.mWPEnabled)
		return FS_WRITE_PROTECTION;		
   return FS_NO_ERROR;
}

/*-----------------------------------*/
static int  ShutDown(void * DriveData)
{
   return FS_NO_ERROR;
}

FS_Driver FS_SdDrv = {
   MountDevice,
   ShutDown,
   ReadSectors,
   WriteSectors,
   MediaChanged,
   DiscardSectors,
   GetDiskGeometry,
   NULL,
   NULL,
   NULL,
   NULL,
   NULL,
   NULL,
   MSDC_GetCardStatus   
};
#endif // (__MSDC_SD_MMC__)