xref: /illumos-gate/usr/src/uts/common/sys/scsi/scsi_watch.h (revision 968633ad8faee931821fd6b656eb0d96d4b186c0)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #ifndef	_SYS_SCSI_SCSI_WATCH_H
27 #define	_SYS_SCSI_SCSI_WATCH_H
28 
29 #pragma ident	"%Z%%M%	%I%	%E% SMI"
30 
31 #ifdef	__cplusplus
32 extern "C" {
33 #endif
34 
35 struct scsi_watch_result {
36 	struct scsi_status		*statusp;
37 	struct scsi_extended_sense	*sensep;
38 	uchar_t				actual_sense_length;
39 	struct scsi_pkt			*pkt;
40 };
41 
42 /*
43  * 120 seconds is a *very* reasonable amount of time for most slow devices
44  */
45 #define	SCSI_WATCH_IO_TIME	120
46 
47 /*
48  * values to pass in "flags" arg for scsi_watch_request_terminate()
49  */
50 #define	SCSI_WATCH_TERMINATE_WAIT	0x0
51 #define	SCSI_WATCH_TERMINATE_NOWAIT	0x1
52 #define	SCSI_WATCH_TERMINATE_ALL_WAIT	0x2
53 
54 #define	SCSI_WATCH_TERMINATE_SUCCESS	0x0
55 #define	SCSI_WATCH_TERMINATE_FAIL	0x1
56 
57 void	scsi_watch_init();
58 void	scsi_watch_fini();
59 opaque_t scsi_watch_request_submit(struct scsi_device *devp,
60 	    int interval, int sense_length,
61 	    int (*callback)(), caddr_t cb_arg);
62 int	scsi_watch_request_terminate(opaque_t token, int flags);
63 void	scsi_watch_resume(opaque_t token);
64 void	scsi_watch_suspend(opaque_t token);
65 
66 #ifdef	__cplusplus
67 }
68 #endif
69 
70 #endif	/* _SYS_SCSI_SCSI_WATCH_H */
71