cam_debug.h

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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: releng/11.2/sys/cam/cam_debug.h 260509 2014-01-10 12:18:05Z mav $
   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 u_int32_t cam_dflags;
   81 /* Printf delay value (to prevent scrolling) */
   82 extern u_int32_t cam_debug_delay;
   83 
   84 /* Debugging macros. */
   85 #define CAM_DEBUGGED(path, flag)                        \
   86         (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags)    \
   87          && (cam_dpath != NULL)                         \
   88          && (xpt_path_comp(cam_dpath, path) >= 0)       \
   89          && (xpt_path_comp(cam_dpath, path) < 2))
   90 
   91 #define CAM_DEBUG(path, flag, printfargs)               \
   92         if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags) \
   93          && (cam_dpath != NULL)                         \
   94          && (xpt_path_comp(cam_dpath, path) >= 0)       \
   95          && (xpt_path_comp(cam_dpath, path) < 2)) {     \
   96                 xpt_print_path(path);                   \
   97                 printf printfargs;                      \
   98                 if (cam_debug_delay != 0)               \
   99                         DELAY(cam_debug_delay);         \
  100         }
  101 
  102 #define CAM_DEBUG_DEV(dev, flag, printfargs)            \
  103         if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags) \
  104          && (cam_dpath != NULL)                         \
  105          && (xpt_path_comp_dev(cam_dpath, dev) >= 0)    \
  106          && (xpt_path_comp_dev(cam_dpath, dev) < 2)) {  \
  107                 xpt_print_device(dev);                  \
  108                 printf printfargs;                      \
  109                 if (cam_debug_delay != 0)               \
  110                         DELAY(cam_debug_delay);         \
  111         }
  112 
  113 #define CAM_DEBUG_PRINT(flag, printfargs)               \
  114         if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags)) {      \
  115                 printf("cam_debug: ");                  \
  116                 printf printfargs;                      \
  117                 if (cam_debug_delay != 0)               \
  118                         DELAY(cam_debug_delay);         \
  119         }
  120 
  121 #define CAM_DEBUG_PATH_PRINT(flag, path, printfargs)    \
  122         if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags)) {      \
  123                 xpt_print(path, "cam_debug: ");         \
  124                 printf printfargs;                      \
  125                 if (cam_debug_delay != 0)               \
  126                         DELAY(cam_debug_delay);         \
  127         }
  128 
  129 #else /* !_KERNEL */
  130 
  131 #define CAM_DEBUGGED(A, B)      0
  132 #define CAM_DEBUG(A, B, C)
  133 #define CAM_DEBUG_PRINT(A, B)
  134 #define CAM_DEBUG_PATH_PRINT(A, B, C)
  135 
  136 #endif /* _KERNEL */
  137 
  138 #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