disksim_bus.h

来自「disksim是一个非常优秀的磁盘仿真工具」· C头文件 代码 · 共 193 行

/*
 * DiskSim Storage Subsystem Simulation Environment (Version 4.0)
 * Revision Authors: John Bucy, Greg Ganger
 * Contributors: John Griffin, Jiri Schindler, Steve Schlosser
 *
 * Copyright (c) of Carnegie Mellon University, 2001-2008.
 *
 * This software is being provided by the copyright holders under the
 * following license. By obtaining, using and/or copying this software,
 * you agree that you have read, understood, and will comply with the
 * following terms and conditions:
 *
 * Permission to reproduce, use, and prepare derivative works of this
 * software is granted provided the copyright and "No Warranty" statements
 * are included with all reproductions and derivative works and associated
 * documentation. This software may also be redistributed without charge
 * provided that the copyright and "No Warranty" statements are included
 * in all redistributions.
 *
 * NO WARRANTY. THIS SOFTWARE IS FURNISHED ON AN "AS IS" BASIS.
 * CARNEGIE MELLON UNIVERSITY MAKES NO WARRANTIES OF ANY KIND, EITHER
 * EXPRESSED OR IMPLIED AS TO THE MATTER INCLUDING, BUT NOT LIMITED
 * TO: WARRANTY OF FITNESS FOR PURPOSE OR MERCHANTABILITY, EXCLUSIVITY
 * OF RESULTS OR RESULTS OBTAINED FROM USE OF THIS SOFTWARE. CARNEGIE
 * MELLON UNIVERSITY DOES NOT MAKE ANY WARRANTY OF ANY KIND WITH RESPECT
 * TO FREEDOM FROM PATENT, TRADEMARK, OR COPYRIGHT INFRINGEMENT.
 * COPYRIGHT HOLDERS WILL BEAR NO LIABILITY FOR ANY USE OF THIS SOFTWARE
 * OR DOCUMENTATION.
 *
 */



/*
 * DiskSim Storage Subsystem Simulation Environment (Version 2.0)
 * Revision Authors: Greg Ganger
 * Contributors: Ross Cohen, John Griffin, Steve Schlosser
 *
 * Copyright (c) of Carnegie Mellon University, 1999.
 *
 * Permission to reproduce, use, and prepare derivative works of
 * this software for internal use is granted provided the copyright
 * and "No Warranty" statements are included with all reproductions
 * and derivative works. This software may also be redistributed
 * without charge provided that the copyright and "No Warranty"
 * statements are included in all redistributions.
 *
 * NO WARRANTY. THIS SOFTWARE IS FURNISHED ON AN "AS IS" BASIS.
 * CARNEGIE MELLON UNIVERSITY MAKES NO WARRANTIES OF ANY KIND, EITHER
 * EXPRESSED OR IMPLIED AS TO THE MATTER INCLUDING, BUT NOT LIMITED
 * TO: WARRANTY OF FITNESS FOR PURPOSE OR MERCHANTABILITY, EXCLUSIVITY
 * OF RESULTS OR RESULTS OBTAINED FROM USE OF THIS SOFTWARE. CARNEGIE
 * MELLON UNIVERSITY DOES NOT MAKE ANY WARRANTY OF ANY KIND WITH RESPECT
 * TO FREEDOM FROM PATENT, TRADEMARK, OR COPYRIGHT INFRINGEMENT.
 */

/*
 * DiskSim Storage Subsystem Simulation Environment
 * Authors: Greg Ganger, Bruce Worthington, Yale Patt
 *
 * Copyright (C) 1993, 1995, 1997 The Regents of the University of Michigan 
 *
 * This software is being provided by the copyright holders under the
 * following license. By obtaining, using and/or copying this software,
 * you agree that you have read, understood, and will comply with the
 * following terms and conditions:
 *
 * Permission to use, copy, modify, distribute, and sell this software
 * and its documentation for any purpose and without fee or royalty is
 * hereby granted, provided that the full text of this NOTICE appears on
 * ALL copies of the software and documentation or portions thereof,
 * including modifications, that you make.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS," AND COPYRIGHT HOLDERS MAKE NO
 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF EXAMPLE,
 * BUT NOT LIMITATION, COPYRIGHT HOLDERS MAKE NO REPRESENTATIONS OR
 * WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR
 * THAT THE USE OF THE SOFTWARE OR DOCUMENTATION WILL NOT INFRINGE ANY
 * THIRD PARTY PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS. COPYRIGHT
 * HOLDERS WILL BEAR NO LIABILITY FOR ANY USE OF THIS SOFTWARE OR
 * DOCUMENTATION.
 *
 *  This software is provided AS IS, WITHOUT REPRESENTATION FROM THE
 * UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY PURPOSE, AND
 * WITHOUT WARRANTY BY THE UNIVERSITY OF MICHIGAN OF ANY KIND, EITHER
 * EXPRESSED OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE REGENTS
 * OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE FOR ANY DAMAGES,
 * INCLUDING SPECIAL , INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
 * WITH RESPECT TO ANY CLAIM ARISING OUT OF OR IN CONNECTION WITH THE
 * USE OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN IF IT HAS
 * BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
 *
 * The names and trademarks of copyright holders or authors may NOT be
 * used in advertising or publicity pertaining to the software without
 * specific, written prior permission. Title to copyright in this software
 * and any associated documentation will at all times remain with copyright
 * holders.
 */

#include <stdio.h>
#include "config.h"
#include "disksim_iosim.h"
#include "disksim_global.h"
#include "disksim_stat.h"

#ifndef DISKSIM_BUS_H
#define DISKSIM_BUS_H


typedef struct {
   int    devtype;
   int    devno;
  /* eventually want to add pointer to device here to avoid table
     lookups */
} slot;

typedef struct bus_ev {
   double time;
   int type;
   struct bus_ev *next;
   struct bus_ev *prev;
   int devno;
   int devtype;
   int busno;
   int slotno;
   ioreq_event *delayed_event;
   double wait_start;
} bus_event;



typedef struct businfo {
   struct bus **buses;
   int buses_len; /* allocated size of buses array */
   int numbuses;
   int bus_printidlestats;
   int bus_printarbwaitstats;
} businfo_t;

#define numbuses	(disksim->businfo->numbuses)

typedef struct bus {
  int           state;
  int           type;
  int           arbtype;
  bus_event    *owners;
  double        arbtime;
  double        readblktranstime;
  double        writeblktranstime;
  bus_event    *arbwinner;
  int		printstats;
  int           depth;
  int           numslots;
  slot         *slots;
  double	lastowned;
  double	runidletime;
  statgen	arbwaitstats;
  statgen	busidlestats;
  char         *name;
} bus;


/* functions exported by disksim_bus.c */

void    bus_read_toprints (FILE *parfile);
void    bus_read_specs (FILE *parfile);
void    bus_read_physorg (FILE *parfile);
void    bus_param_override (char *paramname, char *parval, int first, int last);
int     bus_ownership_get (int busno, int slotno, ioreq_event *curr);
void    bus_ownership_release (int busno);
void    bus_remove_from_arbitration (int busno, ioreq_event *curr);
void    bus_delay (int busno, int devtype, int devno, double delay, ioreq_event *curr);
void    bus_event_arrive (ioreq_event *curr);
double  bus_get_transfer_time (int busno, int bcount, int read);
int     bus_get_data_transfered (ioreq_event *curr, int depth);
int     bus_get_controller_slot (int busno, int ctlno);
void    bus_deliver_event (int busno, int slotno, ioreq_event *curr);
void    bus_set_depths (void);
void    bus_set_to_zero_depth (int busno);
void    bus_print_phys_config (void);
void    bus_setcallbacks (void);
void    bus_initialize (void);
void    bus_resetstats (void);
void    bus_printstats (void);
void    bus_cleanstats (void);
struct bus *getbusbyname(char *name, int *num);

int load_bus_topo(struct lp_topospec *t, int *parentctlno); 

#endif    /* DISKSIM_BUS_H */