rf_camlayer.h

RAIDFrame是个非常好的磁盘阵列RAID仿真工具

/*
 * rf_camlayer.h
 */
/*
 * Copyright (c) 1996 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Jim Zelenka
 *
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  [e-mail]
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */
/*
 * $Locker:  $
 * $Log: rf_camlayer.h,v $
 * Revision 1.9  1996/08/16  17:51:22  jimz
 * begin AIX additions
 *
 * Revision 1.8  1996/07/19  16:12:36  jimz
 * add devname arg to DoReadCapacity
 *
 * Revision 1.7  1996/07/18  22:57:14  jimz
 * port simulator to AIX
 *
 * Revision 1.6  1996/06/10  11:55:47  jimz
 * Straightened out some per-array/not-per-array distinctions, fixed
 * a couple bugs related to confusion. Added shutdown lists. Removed
 * layout shutdown function (now subsumed by shutdown lists).
 *
 * Revision 1.5  1996/06/07  21:33:04  jimz
 * begin using consistent types for sector numbers,
 * stripe numbers, row+col numbers, recon unit numbers
 *
 * Revision 1.4  1996/06/03  23:28:26  jimz
 * more bugfixes
 * check in tree to sync for IPDS runs with current bugfixes
 * there still may be a problem with threads in the script test
 * getting I/Os stuck- not trivially reproducible (runs ~50 times
 * in a row without getting stuck)
 *
 * Revision 1.3  1996/05/30  11:29:41  jimz
 * Numerous bug fixes. Stripe lock release code disagreed with the taking code
 * about when stripes should be locked (I made it consistent: no parity, no lock)
 * There was a lot of extra serialization of I/Os which I've removed- a lot of
 * it was to calculate values for the cache code, which is no longer with us.
 * More types, function, macro cleanup. Added code to properly quiesce the array
 * on shutdown. Made a lot of stuff array-specific which was (bogusly) general
 * before. Fixed memory allocation, freeing bugs.
 *
 * Revision 1.2  1996/05/23  21:46:35  jimz
 * checkpoint in code cleanup (release prep)
 * lots of types, function names have been fixed
 *
 * Revision 1.1  1996/05/18  19:54:47  jimz
 * Initial revision
 *
 */

#ifndef _RF__RF_CAMLAYER_H_
#define _RF__RF_CAMLAYER_H_

#include "rf_types.h"

#if defined(__osf__) || defined(AIX)
int   rf_ConfigureCamLayer(RF_ShutdownList_t **listp);
#endif /* __osf__ || AIX */

#ifdef __osf__
void *rf_CreateCamIOHandle(void);
void  rf_DestroyCamIOHandle(void *h);
int   rf_extract_ids(char *name, int *bus_id, int *targ_id, int *lun);
int   rf_SCSI_AllocReadCapacity(RF_DiskOp_t **ua_ccb_out);
int   rf_SCSI_AllocTUR(RF_DiskOp_t **ua_ccb_out);
int   rf_SCSI_FreeDiskOp(RF_DiskOp_t *op, int free_the_buf);
int   rf_SCSI_DoTUR(RF_DiskOp_t *op, u_char bus_id, u_char targ_id, u_char lun,
		dev_t dev);
int   rf_SCSI_DoReadCapacity(RF_DiskOp_t *op, u_char bus_id, u_char targ_id,
		u_char lun, dev_t dev, RF_SectorCount_t *numBlk, int *blkSize,
		char *devname);
int   rf_SCSI_OpenUnit(dev_t dev);
#ifndef KERNEL
void  rf_SCSI_setup_rw_handle(RF_IoType_t type, void *handle, int bus,
	int target, int lun);
int   rf_SCSI_do_write(int blockshift, void *handle, RF_SectorNum_t sectoffset,
	int numsect, char *buf);
int   rf_SCSI_do_read(int blockshift, void *handle, RF_SectorNum_t sectoffset,
	int numsect, char *buf);
#endif /* !KERNEL */

#define RF_CAM_SENSEDATALEN 160
#endif /* __osf__ */

#endif /* !_RF__RF_CAMLAYER_H_ */