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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 */