emul64.h revision b1dd958f54f8bfa984d306bb8ca8264855761d7b
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_SCSI_ADAPTERS_EMUL64_H
#define _SYS_SCSI_ADAPTERS_EMUL64_H
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* This file defines the commands and structures for three emul64 ioctls,
* that may be useful in speeding up tests involving large devices. The
* ioctls are documented at
* http://lvm.central.sun.com/projects/lagavulin/emul64_design.html#ioctl.
* Briefly, there are three ioctls:
*
* EMUL64_WRITE_OFF - ignore all write operations to a specified block
* range.
* EMUL64_WRITE_ON - enable writes to a specified block range.
* EMUL64_ZERO_RANGE - zero all blocks in the specified range.
*
* The emul64_range structure is used to specify a block range for these
* ioctls.
*/
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/inttypes.h>
#include <sys/types.h>
/*
* emul64 ioctl commands:
*/
#define EMUL64IOC ('e' << 8)
#define EMUL64_WRITE_OFF (EMUL64IOC|37)
#define EMUL64_WRITE_ON (EMUL64IOC|38)
#define EMUL64_ZERO_RANGE (EMUL64IOC|39)
struct emul64_range {
diskaddr_t emul64_sb; /* starting block # of range */
uint64_t emul64_blkcnt; /* # of blocks in range */
};
typedef struct emul64_range emul64_range_t;
/*
* Structure to use when specifying an ioctl for a range of blocks on a
* specific target.
*/
struct emul64_tgt_range {
emul64_range_t emul64_blkrange; /* blocks affected by ioctl */
ushort_t emul64_target; /* target number of disk */
ushort_t emul64_lun; /* lun of disk */
};
typedef struct emul64_tgt_range emul64_tgt_range_t;
#ifdef __cplusplus
}
#endif
#endif /* _SYS_SCSI_ADAPTERS_EMUL64_H */