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1 /*-
2  * Macros for tracing/loging information in the CAM layer
3  *
4  * SPDX-License-Identifier: BSD-2-Clause
5  *
6  * Copyright (c) 1997 Justin T. Gibbs.
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions, and the following disclaimer,
14  *    without modification, immediately at the beginning of the file.
15  * 2. The name of the author may not be used to endorse or promote products
16  *    derived from this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
22  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
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_PROBE         = 0x40  /* print out probe actions */
45 } cam_debug_flags;
46
47 #if defined(_KERNEL)
48
49 #ifndef CAM_DEBUG_FLAGS
50 #define CAM_DEBUG_FLAGS         CAM_DEBUG_NONE
51 #endif
52
53 #ifndef CAM_DEBUG_COMPILE
54 #ifdef CAMDEBUG
55 #define CAM_DEBUG_COMPILE       (-1)
56 #else
57 #define CAM_DEBUG_COMPILE       (CAM_DEBUG_INFO | CAM_DEBUG_CDB | \
58                                  CAM_DEBUG_PERIPH | CAM_DEBUG_PROBE | \
59                                  CAM_DEBUG_FLAGS)
60 #endif
61 #endif
62
63 #ifndef CAM_DEBUG_BUS
64 #define CAM_DEBUG_BUS           CAM_BUS_WILDCARD
65 #endif
66 #ifndef CAM_DEBUG_TARGET
67 #define CAM_DEBUG_TARGET        CAM_TARGET_WILDCARD
68 #endif
69 #ifndef CAM_DEBUG_LUN
70 #define CAM_DEBUG_LUN           CAM_LUN_WILDCARD
71 #endif
72
73 #ifndef CAM_DEBUG_DELAY
74 #define CAM_DEBUG_DELAY         0
75 #endif
76
77 /* Path we want to debug */
78 extern struct cam_path *cam_dpath;
79 /* Current debug levels set */
80 extern uint32_t cam_dflags;
81 /* Printf delay value (to prevent scrolling) */
82 extern uint32_t cam_debug_delay;
83
84 /* Helper routines -- helps conserve stack */
85 struct cam_ed;
86 void xpt_cam_path_debug(struct cam_path *path, const char *fmt, ...);
87 void xpt_cam_dev_debug(struct cam_ed *dev, const char *fmt, ...);
88 void xpt_cam_debug(const char *fmt, ...);
89
90 /* Stupid macro to remove a layer of parens */
91 #define _CAM_X(...) __VA_ARGS__
92
93 /* Debugging macros. */
94 #define CAM_DEBUGGED(path, flag)                                        \
95         (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags)                    \
96          && (cam_dpath != NULL)                                         \
97          && (xpt_path_comp(cam_dpath, (path)) >= 0)                     \
98          && (xpt_path_comp(cam_dpath, (path)) < 2))
99
100 #define CAM_DEBUG(path, flag, printfargs)                               \
101         if (CAM_DEBUGGED(path, flag)) {                                 \
102                 xpt_cam_path_debug(path, _CAM_X printfargs);            \
103         }
104
105 #define CAM_DEBUG_DEV(dev, flag, printfargs)                            \
106         if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags)                 \
107         && (cam_dpath != NULL)                                          \
108         && (xpt_path_comp_dev(cam_dpath, (dev)) >= 0)                   \
109         && (xpt_path_comp_dev(cam_dpath, (dev)) < 2)) {                 \
110                 xpt_cam_dev_debug(dev, _CAM_X printfargs);              \
111         }
112
113 #define CAM_DEBUG_PRINT(flag, printfargs)                               \
114         if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags)) {              \
115                 xpt_cam_debug(_CAM_X printfargs);                       \
116         }
117
118 #else /* !_KERNEL */
119
120 #define CAM_DEBUGGED(A, B)      0
121 #define CAM_DEBUG(A, B, C)
122 #define CAM_DEBUG_DEV(A, B, C)
123 #define CAM_DEBUG_PRINT(A, B)
124
125 #endif /* _KERNEL */
126
127 #endif /* _CAM_CAM_DEBUG_H */