FreeBSD/Linux Kernel Cross Reference
sys/cam/cam_debug.h
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: src/sys/cam/cam_debug.h,v 1.9 2006/05/16 14:37:57 phk Exp $
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
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