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/*
* Copyright (c) 2005-2006 Arch Rock Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
* - Neither the name of the Arch Rock Corporation nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* ARCHED ROCK OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE
*/
/**
* @author Jonathan Hui <jhui@archrock.com>
* @version $Revision: 1.4 $ $Date: 2006-12-12 18:23:12 $
*/
module Stm25pBlockP {
provides interface BlockRead as Read[ uint8_t id ];
provides interface BlockWrite as Write[ uint8_t id ];
provides interface StorageMap[ uint8_t id ];
uses interface Stm25pSector as Sector[ uint8_t id ];
uses interface Resource as ClientResource[ uint8_t id ];
uses interface Leds;
}
implementation {
enum {
NUM_BLOCKS = uniqueCount( "Stm25p.Block" ),
};
typedef enum {
S_IDLE,
S_READ,
S_CRC,
S_WRITE,
S_SYNC,
S_ERASE,
} stm25p_block_req_t;
typedef struct stm25p_block_state_t {
storage_addr_t addr;
void* buf;
storage_len_t len;
stm25p_block_req_t req;
} stm25p_block_state_t;
stm25p_block_state_t m_block_state[ NUM_BLOCKS ];
stm25p_block_state_t m_req;
error_t newRequest( uint8_t client );
void signalDone( uint8_t id, uint16_t crc, error_t error );
command storage_addr_t StorageMap.getPhysicalAddress[ uint8_t id ]( storage_addr_t addr ) {
return call Sector.getPhysicalAddress[ id ]( addr );
}
command storage_len_t Read.getSize[ uint8_t id ]() {
return ( (storage_len_t)call Sector.getNumSectors[ id ]()
<< STM25P_SECTOR_SIZE_LOG2 );
}
command error_t Read.read[ uint8_t id ]( storage_addr_t addr, void* buf,
storage_len_t len ) {
m_req.req = S_READ;
m_req.addr = addr;
m_req.buf = buf;
m_req.len = len;
return newRequest( id );
}
command error_t Read.computeCrc[ uint8_t id ]( storage_addr_t addr,
storage_len_t len,
uint16_t crc ) {
m_req.req = S_CRC;
m_req.addr = addr;
m_req.buf = (void*)crc;
m_req.len = len;
return newRequest( id );
}
command error_t Write.write[ uint8_t id ]( storage_addr_t addr, void* buf,
storage_len_t len ) {
m_req.req = S_WRITE;
m_req.addr = addr;
m_req.buf = buf;
m_req.len = len;
return newRequest( id );
}
command error_t Write.sync[ uint8_t id ]() {
m_req.req = S_SYNC;
return newRequest( id );
}
command error_t Write.erase[ uint8_t id ]() {
m_req.req = S_ERASE;
return newRequest( id );
}
error_t newRequest( uint8_t client ) {
if ( m_block_state[ client ].req != S_IDLE )
return FAIL;
call ClientResource.request[ client ]();
m_block_state[ client ] = m_req;
return SUCCESS;
}
event void ClientResource.granted[ uint8_t id ]() {
switch( m_block_state[ id ].req ) {
case S_READ:
call Sector.read[ id ]( m_block_state[ id ].addr,
m_block_state[ id ].buf,
m_block_state[ id ].len );
break;
case S_CRC:
call Sector.computeCrc[ id ]( (uint16_t)m_block_state[ id ].buf,
m_block_state[ id ].addr,
m_block_state[ id ].len );
break;
case S_WRITE:
call Sector.write[ id ]( m_block_state[ id ].addr,
m_block_state[ id ].buf,
m_block_state[ id ].len );
break;
case S_ERASE:
call Sector.erase[ id ]( 0, call Sector.getNumSectors[ id ]() );
break;
case S_SYNC:
signalDone( id, 0, SUCCESS );
break;
case S_IDLE:
break;
}
}
event void Sector.readDone[ uint8_t id ]( stm25p_addr_t addr, uint8_t* buf,
stm25p_len_t len, error_t error ) {
signalDone( id, 0, error );
}
event void Sector.writeDone[ uint8_t id ]( stm25p_addr_t addr, uint8_t* buf,
stm25p_len_t len, error_t error ){
signalDone( id, 0, error );
}
event void Sector.eraseDone[ uint8_t id ]( uint8_t sector,
uint8_t num_sectors,
error_t error ) {
signalDone( id, 0, error );
}
event void Sector.computeCrcDone[ uint8_t id ]( stm25p_addr_t addr,
stm25p_len_t len,
uint16_t crc,
error_t error ) {
signalDone( id, crc, error );
}
void signalDone( uint8_t id, uint16_t crc, error_t error ) {
stm25p_block_req_t req = m_block_state[ id ].req;
call ClientResource.release[ id ]();
m_block_state[ id ].req = S_IDLE;
switch( req ) {
case S_READ:
signal Read.readDone[ id ]( m_block_state[ id ].addr,
m_block_state[ id ].buf,
m_block_state[ id ].len, error );
break;
case S_CRC:
signal Read.computeCrcDone[ id ]( m_block_state[ id ].addr,
m_block_state[ id ].len, crc, error );
break;
case S_WRITE:
signal Write.writeDone[ id ]( m_block_state[ id ].addr,
m_block_state[ id ].buf,
m_block_state[ id ].len, error );
break;
case S_SYNC:
signal Write.syncDone[ id ]( error );
break;
case S_ERASE:
signal Write.eraseDone[ id ]( error );
break;
case S_IDLE:
break;
}
}
default event void Read.readDone[ uint8_t id ]( storage_addr_t addr, void* buf, storage_len_t len, error_t error ) {}
default event void Read.computeCrcDone[ uint8_t id ]( storage_addr_t addr, storage_len_t len, uint16_t crc, error_t error ) {}
default event void Write.writeDone[ uint8_t id ]( storage_addr_t addr, void* buf, storage_len_t len, error_t error ) {}
default event void Write.eraseDone[ uint8_t id ]( error_t error ) {}
default event void Write.syncDone[ uint8_t id ]( error_t error ) {}
default command storage_addr_t Sector.getPhysicalAddress[ uint8_t id ]( storage_addr_t addr ) { return 0xffffffff; }
default command uint8_t Sector.getNumSectors[ uint8_t id ]() { return 0; }
default command error_t Sector.read[ uint8_t id ]( stm25p_addr_t addr, uint8_t* buf, stm25p_len_t len ) { return FAIL; }
default command error_t Sector.write[ uint8_t id ]( stm25p_addr_t addr, uint8_t* buf, stm25p_len_t len ) { return FAIL; }
default command error_t Sector.erase[ uint8_t id ]( uint8_t sector, uint8_t num_sectors ) { return FAIL; }
default command error_t Sector.computeCrc[ uint8_t id ]( uint16_t crc, storage_addr_t addr, storage_len_t len ) { return FAIL; }
default async command error_t ClientResource.request[ uint8_t id ]() { return FAIL; }
default async command error_t ClientResource.release[ uint8_t id ]() { return FAIL; }
}
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