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// Copyright (c) 2009-2011, Tor M. Aamodt, Ali Bakhoda, George L. Yuan
// The University of British Columbia
// 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 University of British Columbia 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 COPYRIGHT HOLDER OR 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.
#ifndef dram_sched_h_INCLUDED
#define dram_sched_h_INCLUDED
#include "dram.h"
#include "shader.h"
#include "gpu-sim.h"
#include "gpu-misc.h"
#include <list>
#include <map>
enum memory_mode {
READ_MODE = 0,
WRITE_MODE
};
class frfcfs_scheduler {
public:
frfcfs_scheduler( const memory_config *config, dram_t *dm, memory_stats_t *stats );
void add_req( dram_req_t *req );
void data_collection(unsigned bank);
dram_req_t *schedule( unsigned bank, unsigned curr_row );
void print( FILE *fp );
unsigned num_pending() const { return m_num_pending;}
unsigned num_write_pending() const { return m_num_write_pending;}
private:
const memory_config *m_config;
dram_t *m_dram;
unsigned m_num_pending;
unsigned m_num_write_pending;
std::list<dram_req_t*> *m_queue;
std::map<unsigned,std::list<std::list<dram_req_t*>::iterator> > *m_bins;
std::list<std::list<dram_req_t*>::iterator> **m_last_row;
unsigned *curr_row_service_time; //one set of variables for each bank.
unsigned *row_service_timestamp; //tracks when scheduler began servicing current row
std::list<dram_req_t*> *m_write_queue;
std::map<unsigned,std::list<std::list<dram_req_t*>::iterator> > *m_write_bins;
std::list<std::list<dram_req_t*>::iterator> **m_last_write_row;
enum memory_mode m_mode;
memory_stats_t *m_stats;
};
#endif
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