xref: /illumos-gate/usr/src/uts/common/sys/scsi/scsi_watch.h (revision f5fc5c043551e3eab595da7d8b5a53479207738f)
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 #ifdef	__cplusplus
30 extern "C" {
31 #endif
32 
33 struct scsi_watch_result {
34 	struct scsi_status		*statusp;
35 	struct scsi_extended_sense	*sensep;
36 	uchar_t				actual_sense_length;
37 	struct scsi_pkt			*pkt;
38 };
39 
40 /*
41  * 120 seconds is a *very* reasonable amount of time for most slow devices
42  */
43 #define	SCSI_WATCH_IO_TIME	120
44 
45 /*
46  * values to pass in "flags" arg for scsi_watch_request_terminate()
47  */
48 #define	SCSI_WATCH_TERMINATE_WAIT	0x0
49 #define	SCSI_WATCH_TERMINATE_NOWAIT	0x1
50 #define	SCSI_WATCH_TERMINATE_ALL_WAIT	0x2
51 
52 #define	SCSI_WATCH_TERMINATE_SUCCESS	0x0
53 #define	SCSI_WATCH_TERMINATE_FAIL	0x1
54 
55 void	scsi_watch_init();
56 void	scsi_watch_fini();
57 opaque_t scsi_watch_request_submit(struct scsi_device *devp,
58 	    int interval, int sense_length,
59 	    int (*callback)(), caddr_t cb_arg);
60 int	scsi_watch_request_terminate(opaque_t token, int flags);
61 int	scsi_watch_get_ref_count(opaque_t token);
62 void	scsi_watch_resume(opaque_t token);
63 void	scsi_watch_suspend(opaque_t token);
64 
65 #ifdef	__cplusplus
66 }
67 #endif
68 
69 #endif	/* _SYS_SCSI_SCSI_WATCH_H */
70