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request_transform.h
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//////////////////////////////////////////////////////////////////////////////////
// request_transform.h for Cosmos+ OpenSSD
// Copyright (c) 2017 Hanyang University ENC Lab.
// Contributed by Yong Ho Song <[email protected]>
// Jaewook Kwak <[email protected]>
//
// This file is part of Cosmos+ OpenSSD.
//
// Cosmos+ OpenSSD is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// Cosmos+ OpenSSD is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Cosmos+ OpenSSD; see the file COPYING.
// If not, see <http://www.gnu.org/licenses/>.
//////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////
// Company: ENC Lab. <http://enc.hanyang.ac.kr>
// Engineer: Jaewook Kwak <[email protected]>
//
// Project Name: Cosmos+ OpenSSD
// Design Name: Cosmos+ Firmware
// Module Name: Request Scheduler
// File Name: request_transform.h
//
// Version: v1.0.0
//
// Description:
// - define parameters, data structure and functions of request scheduler
//////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////
// Revision History:
//
// * v1.0.0
// - First draft
//////////////////////////////////////////////////////////////////////////////////
#ifndef REQUEST_TRANSFORM_H_
#define REQUEST_TRANSFORM_H_
#include "ftl_config.h"
#include "nvme/nvme.h"
#define NVME_COMMAND_AUTO_COMPLETION_OFF 0
#define NVME_COMMAND_AUTO_COMPLETION_ON 1
#define ROW_ADDR_DEPENDENCY_CHECK_OPT_SELECT 0
#define ROW_ADDR_DEPENDENCY_CHECK_OPT_RELEASE 1
#define BUF_DEPENDENCY_REPORT_BLOCKED 0
#define BUF_DEPENDENCY_REPORT_PASS 1
#define ROW_ADDR_DEPENDENCY_REPORT_BLOCKED 0
#define ROW_ADDR_DEPENDENCY_REPORT_PASS 1
#define ROW_ADDR_DEPENDENCY_TABLE_UPDATE_REPORT_DONE 0
#define ROW_ADDR_DEPENDENCY_TABLE_UPDATE_REPORT_SYNC 1
typedef struct _ROW_ADDR_DEPENDENCY_ENTRY {
unsigned int permittedProgPage : 12;
unsigned int blockedReadReqCnt : 16;
unsigned int blockedEraseReqFlag : 1;
unsigned int reserved0 : 3;
} ROW_ADDR_DEPENDENCY_ENTRY, *P_ROW_ADDR_DEPENDENCY_ENTRY;
typedef struct _ROW_ADDR_DEPENDENCY_TABLE {
ROW_ADDR_DEPENDENCY_ENTRY block[USER_CHANNELS][USER_WAYS][MAIN_BLOCKS_PER_DIE];
} ROW_ADDR_DEPENDENCY_TABLE, *P_ROW_ADDR_DEPENDENCY_TABLE;
void InitDependencyTable();
void ReqTransNvmeToSlice(unsigned int cmdSlotTag, unsigned int startLba, unsigned int nlb, unsigned int cmdCode);
void ReqTransSliceToLowLevel();
void IssueNvmeDmaReq(unsigned int reqSlotTag);
void CheckDoneNvmeDmaReq();
void SelectLowLevelReqQ(unsigned int reqSlotTag);
void ReleaseBlockedByBufDepReq(unsigned int reqSlotTag);
void ReleaseBlockedByRowAddrDepReq(unsigned int chNo, unsigned int wayNo);
extern P_ROW_ADDR_DEPENDENCY_TABLE rowAddrDependencyTablePtr;
#endif /* REQUEST_TRANSFORM_H_ */