xref: /freebsd/sys/cam/cam_debug.h (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
1 /*-
2  * Macros for tracing/loging information in the CAM layer
3  *
4  * Copyright (c) 1997 Justin T. Gibbs.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions, and the following disclaimer,
12  *    without modification, immediately at the beginning of the file.
13  * 2. The name of the author may not be used to endorse or promote products
14  *    derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 #ifndef	_CAM_CAM_DEBUG_H
31 #define _CAM_CAM_DEBUG_H 1
32 
33 /*
34  * Debugging flags.
35  */
36 typedef enum {
37 	CAM_DEBUG_NONE		= 0x00, /* no debugging */
38 	CAM_DEBUG_INFO		= 0x01,	/* scsi commands, errors, data */
39 	CAM_DEBUG_TRACE		= 0x02,	/* routine flow tracking */
40 	CAM_DEBUG_SUBTRACE	= 0x04,	/* internal to routine flows */
41 	CAM_DEBUG_CDB		= 0x08, /* print out SCSI CDBs only */
42 	CAM_DEBUG_XPT		= 0x10,	/* print out xpt scheduling */
43 	CAM_DEBUG_PERIPH	= 0x20  /* print out peripheral calls */
44 } cam_debug_flags;
45 
46 #if defined(CAMDEBUG) && defined(_KERNEL)
47 
48 /* Path we want to debug */
49 extern struct cam_path *cam_dpath;
50 /* Current debug levels set */
51 extern u_int32_t cam_dflags;
52 /* Printf delay value (to prevent scrolling) */
53 extern u_int32_t cam_debug_delay;
54 
55 /* Debugging macros. */
56 #define	CAM_DEBUGGED(path, flag)			\
57 	((cam_dflags & (flag))				\
58 	 && (cam_dpath != NULL)				\
59 	 && (xpt_path_comp(cam_dpath, path) >= 0)	\
60 	 && (xpt_path_comp(cam_dpath, path) < 2))
61 #define	CAM_DEBUG(path, flag, printfargs)		\
62 	if ((cam_dflags & (flag))			\
63 	 && (cam_dpath != NULL)				\
64 	 && (xpt_path_comp(cam_dpath, path) >= 0)	\
65 	 && (xpt_path_comp(cam_dpath, path) < 2)) {	\
66 		xpt_print_path(path);			\
67  		printf printfargs;			\
68 		if (cam_debug_delay != 0)		\
69 			DELAY(cam_debug_delay);		\
70 	}
71 #define	CAM_DEBUG_PRINT(flag, printfargs)		\
72 	if (cam_dflags & (flag)) {			\
73 		printf("cam_debug: ");			\
74  		printf printfargs;			\
75 		if (cam_debug_delay != 0)		\
76 			DELAY(cam_debug_delay);		\
77 	}
78 
79 #else /* !CAMDEBUG || !_KERNEL */
80 
81 #define	CAM_DEBUGGED(A, B)	0
82 #define	CAM_DEBUG(A, B, C)
83 #define	CAM_DEBUG_PRINT(A, B)
84 
85 #endif /* CAMDEBUG && _KERNEL */
86 
87 #endif /* _CAM_CAM_DEBUG_H */
88