cam_debug.h

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    1 /*-
    2  * Macros for tracing/loging information in the CAM layer
    3  *
    4  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    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  * $FreeBSD$
   31  */
   32 #ifndef _CAM_CAM_DEBUG_H
   33 #define _CAM_CAM_DEBUG_H 1
   34 
   35 /*
   36  * Debugging flags.
   37  */
   38 typedef enum {
   39         CAM_DEBUG_NONE          = 0x00, /* no debugging */
   40         CAM_DEBUG_INFO          = 0x01, /* scsi commands, errors, data */ 
   41         CAM_DEBUG_TRACE         = 0x02, /* routine flow tracking */
   42         CAM_DEBUG_SUBTRACE      = 0x04, /* internal to routine flows */
   43         CAM_DEBUG_CDB           = 0x08, /* print out SCSI CDBs only */
   44         CAM_DEBUG_XPT           = 0x10, /* print out xpt scheduling */
   45         CAM_DEBUG_PERIPH        = 0x20, /* print out peripheral calls */
   46         CAM_DEBUG_PROBE         = 0x40  /* print out probe actions */
   47 } cam_debug_flags;
   48 
   49 #if defined(_KERNEL)
   50 
   51 #ifndef CAM_DEBUG_FLAGS
   52 #define CAM_DEBUG_FLAGS         CAM_DEBUG_NONE
   53 #endif
   54 
   55 #ifndef CAM_DEBUG_COMPILE
   56 #ifdef CAMDEBUG
   57 #define CAM_DEBUG_COMPILE       (-1)
   58 #else
   59 #define CAM_DEBUG_COMPILE       (CAM_DEBUG_INFO | CAM_DEBUG_CDB | \
   60                                  CAM_DEBUG_PERIPH | CAM_DEBUG_PROBE | \
   61                                  CAM_DEBUG_FLAGS)
   62 #endif
   63 #endif
   64 
   65 #ifndef CAM_DEBUG_BUS
   66 #define CAM_DEBUG_BUS           CAM_BUS_WILDCARD
   67 #endif
   68 #ifndef CAM_DEBUG_TARGET
   69 #define CAM_DEBUG_TARGET        CAM_TARGET_WILDCARD
   70 #endif
   71 #ifndef CAM_DEBUG_LUN
   72 #define CAM_DEBUG_LUN           CAM_LUN_WILDCARD
   73 #endif
   74 
   75 #ifndef CAM_DEBUG_DELAY
   76 #define CAM_DEBUG_DELAY         0
   77 #endif
   78 
   79 /* Path we want to debug */
   80 extern struct cam_path *cam_dpath;
   81 /* Current debug levels set */
   82 extern u_int32_t cam_dflags;
   83 /* Printf delay value (to prevent scrolling) */
   84 extern u_int32_t cam_debug_delay;
   85 
   86 /* Debugging macros. */
   87 #define CAM_DEBUGGED(path, flag)                        \
   88         (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags)    \
   89          && (cam_dpath != NULL)                         \
   90          && (xpt_path_comp(cam_dpath, path) >= 0)       \
   91          && (xpt_path_comp(cam_dpath, path) < 2))
   92 
   93 #define CAM_DEBUG(path, flag, printfargs)               \
   94         if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags) \
   95          && (cam_dpath != NULL)                         \
   96          && (xpt_path_comp(cam_dpath, path) >= 0)       \
   97          && (xpt_path_comp(cam_dpath, path) < 2)) {     \
   98                 xpt_print_path(path);                   \
   99                 printf printfargs;                      \
  100                 if (cam_debug_delay != 0)               \
  101                         DELAY(cam_debug_delay);         \
  102         }
  103 
  104 #define CAM_DEBUG_DEV(dev, flag, printfargs)            \
  105         if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags) \
  106          && (cam_dpath != NULL)                         \
  107          && (xpt_path_comp_dev(cam_dpath, dev) >= 0)    \
  108          && (xpt_path_comp_dev(cam_dpath, dev) < 2)) {  \
  109                 xpt_print_device(dev);                  \
  110                 printf printfargs;                      \
  111                 if (cam_debug_delay != 0)               \
  112                         DELAY(cam_debug_delay);         \
  113         }
  114 
  115 #define CAM_DEBUG_PRINT(flag, printfargs)               \
  116         if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags)) {      \
  117                 printf("cam_debug: ");                  \
  118                 printf printfargs;                      \
  119                 if (cam_debug_delay != 0)               \
  120                         DELAY(cam_debug_delay);         \
  121         }
  122 
  123 #define CAM_DEBUG_PATH_PRINT(flag, path, printfargs)    \
  124         if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags)) {      \
  125                 xpt_print(path, "cam_debug: ");         \
  126                 printf printfargs;                      \
  127                 if (cam_debug_delay != 0)               \
  128                         DELAY(cam_debug_delay);         \
  129         }
  130 
  131 #else /* !_KERNEL */
  132 
  133 #define CAM_DEBUGGED(A, B)      0
  134 #define CAM_DEBUG(A, B, C)
  135 #define CAM_DEBUG_PRINT(A, B)
  136 #define CAM_DEBUG_PATH_PRINT(A, B, C)
  137 
  138 #endif /* _KERNEL */
  139 
  140 #endif /* _CAM_CAM_DEBUG_H */

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FreeBSD/Linux Kernel Cross Reference sys/cam/cam_debug.h

FreeBSD/Linux Kernel Cross Reference
sys/cam/cam_debug.h