2013-04-05 22:46:56 +02:00
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/**
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******************************************************************************
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*
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* @file msd_memory.c
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* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
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* Parts by Thorsten Klose (tk@midibox.org) (tk@midibox.org)
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* @brief Memory Management Layer
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* @see The GNU Public License (GPL) Version 3
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* @defgroup MSD MSD Functions
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* @{
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*
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*****************************************************************************/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/******************** (C) COPYRIGHT 2009 STMicroelectronics ********************
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* File Name : memory.c
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* Author : MCD Application Team
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* Version : V3.0.1
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* Date : 04/27/2009
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* Description : Memory management layer
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********************************************************************************
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
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* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
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* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
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* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
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* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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*******************************************************************************/
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/* Includes ------------------------------------------------------------------*/
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#include <pios.h>
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#include <usb_lib.h>
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#include "msd.h"
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#include "msd_memory.h"
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#include "msd_scsi.h"
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#include "msd_bot.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Global variables ----------------------------------------------------------*/
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uint32_t MSD_Mass_Memory_Size[MSD_NUM_LUN];
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uint32_t MSD_Mass_Block_Size[MSD_NUM_LUN];
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uint32_t MSD_Mass_Block_Count[MSD_NUM_LUN];
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/* Private variables ---------------------------------------------------------*/
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static __IO uint32_t Block_Read_count = 0;
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static __IO uint32_t Block_offset;
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static __IO uint32_t Counter = 0;
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static uint32_t Idx;
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static uint32_t Data_Buffer[MSD_BULK_MAX_PACKET_SIZE *2]; /* 512 bytes*/
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static uint8_t TransferState = TXFR_IDLE;
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/* Extern variables ----------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Extern function prototypes ------------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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/*******************************************************************************
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* Function Name : Read_Memory
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* Description : Handle the Read operation from the microSD card.
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* Input : None.
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* Output : None.
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* Return : None.
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*******************************************************************************/
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void MSD_Read_Memory(uint8_t lun, uint32_t Memory_Offset, uint32_t Transfer_Length)
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{
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static uint32_t Offset, Length;
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if (TransferState == TXFR_IDLE )
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{
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Offset = Memory_Offset * MSD_Mass_Block_Size[lun];
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Length = Transfer_Length * MSD_Mass_Block_Size[lun];
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TransferState = TXFR_ONGOING;
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}
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if (TransferState == TXFR_ONGOING )
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{
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if (!Block_Read_count)
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{
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s32 status;
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switch( lun ) {
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case 0:
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if( MSD_Mass_Block_Size[lun] != 512 )
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break;
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status = PIOS_SDCARD_SectorRead(Offset/512, (u8 *)Data_Buffer);
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// TK: how to handle an error here?
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break;
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default:
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status = -1;
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// TK: how to handle an error here?
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}
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UserToPMABufferCopy((uint8_t *)Data_Buffer, MSD_ENDP1_TXADDR, MSD_BULK_MAX_PACKET_SIZE);
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Block_Read_count = MSD_Mass_Block_Size[lun] - MSD_BULK_MAX_PACKET_SIZE;
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Block_offset = MSD_BULK_MAX_PACKET_SIZE;
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}
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else
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{
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UserToPMABufferCopy((uint8_t *)Data_Buffer + Block_offset, MSD_ENDP1_TXADDR, MSD_BULK_MAX_PACKET_SIZE);
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Block_Read_count -= MSD_BULK_MAX_PACKET_SIZE;
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Block_offset += MSD_BULK_MAX_PACKET_SIZE;
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}
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SetEPTxCount(ENDP1, MSD_BULK_MAX_PACKET_SIZE);
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SetEPTxStatus(ENDP1, EP_TX_VALID);
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Offset += MSD_BULK_MAX_PACKET_SIZE;
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Length -= MSD_BULK_MAX_PACKET_SIZE;
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MSD_CSW.dDataResidue -= MSD_BULK_MAX_PACKET_SIZE;
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}
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if (Length == 0)
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{
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Block_Read_count = 0;
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Block_offset = 0;
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Offset = 0;
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MSD_Bot_State = BOT_DATA_IN_LAST;
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TransferState = TXFR_IDLE;
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}
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}
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/*******************************************************************************
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* Function Name : Write_Memory
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* Description : Handle the Write operation to the microSD card.
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* Input : None.
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* Output : None.
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* Return : None.
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*******************************************************************************/
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void MSD_Write_Memory (uint8_t lun, uint32_t Memory_Offset, uint32_t Transfer_Length)
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{
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static uint32_t W_Offset, W_Length;
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uint32_t temp = Counter + 64;
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if (TransferState == TXFR_IDLE )
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{
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W_Offset = Memory_Offset * MSD_Mass_Block_Size[lun];
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W_Length = Transfer_Length * MSD_Mass_Block_Size[lun];
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TransferState = TXFR_ONGOING;
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}
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if (TransferState == TXFR_ONGOING )
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{
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for (Idx = 0 ; Counter < temp; Counter++)
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{
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*((uint8_t *)Data_Buffer + Counter) = MSD_Bulk_Data_Buff[Idx++];
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}
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W_Offset += MSD_Data_Len;
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W_Length -= MSD_Data_Len;
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if (!(W_Length % MSD_Mass_Block_Size[lun]))
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{
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Counter = 0;
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s32 status;
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u32 Offset = W_Offset - MSD_Mass_Block_Size[lun];
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switch( lun ) {
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case 0:
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if( MSD_Mass_Block_Size[lun] != 512 )
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break;
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status = PIOS_SDCARD_SectorWrite(Offset/512, (u8 *)Data_Buffer);
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// TK: how to handle an error here?
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break;
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default:
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status = -1;
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// TK: how to handle an error here?
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}
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}
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MSD_CSW.dDataResidue -= MSD_Data_Len;
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SetEPRxStatus(ENDP2, EP_RX_VALID); /* enable the next transaction*/
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}
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if ((W_Length == 0) || (MSD_Bot_State == BOT_CSW_Send))
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{
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Counter = 0;
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MSD_Set_CSW (CSW_CMD_PASSED, SEND_CSW_ENABLE);
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TransferState = TXFR_IDLE;
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}
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}
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/*******************************************************************************
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* Function Name : MAL_GetStatus
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* Description : Get status
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* Input : None
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* Output : None
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* Return : None
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*******************************************************************************/
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uint16_t MSD_MAL_GetStatus (uint8_t lun)
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{
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// LUN removed or disabled?
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if( !MSD_LUN_AvailableGet(lun) )
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return 1;
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if( lun == 0 ) {
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SDCARDCsdTypeDef csd;
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if( PIOS_SDCARD_CSDRead(&csd) < 0 )
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return 1;
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u32 DeviceSizeMul = csd.DeviceSizeMul + 2;
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u32 temp_block_mul = (1 << csd.RdBlockLen)/ 512;
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MSD_Mass_Block_Count[lun] = ((csd.DeviceSize + 1) * (1 << (DeviceSizeMul))) * temp_block_mul;
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MSD_Mass_Block_Size[lun] = 512;
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MSD_Mass_Memory_Size[lun] = (MSD_Mass_Block_Count[lun] * MSD_Mass_Block_Size[0]);
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return 0;
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}
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return 1;
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}
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/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
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