cam_debug.h

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/*-
 * Macros for tracing/loging information in the CAM layer
 *
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 1997 Justin T. Gibbs.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification, immediately at the beginning of the file.
 * 2. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */
#ifndef _CAM_CAM_DEBUG_H
#define _CAM_CAM_DEBUG_H 1
 
/*
 * Debugging flags.
 */
typedef enum {
        CAM_DEBUG_NONE          = 0x00, /* no debugging */
        CAM_DEBUG_INFO          = 0x01, /* scsi commands, errors, data */ 
        CAM_DEBUG_TRACE         = 0x02, /* routine flow tracking */
        CAM_DEBUG_SUBTRACE      = 0x04, /* internal to routine flows */
        CAM_DEBUG_CDB           = 0x08, /* print out SCSI CDBs only */
        CAM_DEBUG_XPT           = 0x10, /* print out xpt scheduling */
        CAM_DEBUG_PERIPH        = 0x20, /* print out peripheral calls */
        CAM_DEBUG_PROBE         = 0x40  /* print out probe actions */
} cam_debug_flags;
 
#if defined(_KERNEL)
 
#ifndef CAM_DEBUG_FLAGS
#define CAM_DEBUG_FLAGS         CAM_DEBUG_NONE
#endif
 
#ifndef CAM_DEBUG_COMPILE
#ifdef CAMDEBUG
#define CAM_DEBUG_COMPILE       (-1)
#else
#define CAM_DEBUG_COMPILE       (CAM_DEBUG_INFO | CAM_DEBUG_CDB | \
                                 CAM_DEBUG_PERIPH | CAM_DEBUG_PROBE | \
                                 CAM_DEBUG_FLAGS)
#endif
#endif
 
#ifndef CAM_DEBUG_BUS
#define CAM_DEBUG_BUS           CAM_BUS_WILDCARD
#endif
#ifndef CAM_DEBUG_TARGET
#define CAM_DEBUG_TARGET        CAM_TARGET_WILDCARD
#endif
#ifndef CAM_DEBUG_LUN
#define CAM_DEBUG_LUN           CAM_LUN_WILDCARD
#endif
 
#ifndef CAM_DEBUG_DELAY
#define CAM_DEBUG_DELAY         0
#endif
 
/* Path we want to debug */
extern struct cam_path *cam_dpath;
/* Current debug levels set */
extern u_int32_t cam_dflags;
/* Printf delay value (to prevent scrolling) */
extern u_int32_t cam_debug_delay;
 
/* Debugging macros. */
#define CAM_DEBUGGED(path, flag)                        \
        (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags)    \
         && (cam_dpath != NULL)                         \
         && (xpt_path_comp(cam_dpath, path) >= 0)       \
         && (xpt_path_comp(cam_dpath, path) < 2))
 
#define CAM_DEBUG(path, flag, printfargs)               \
        if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags) \
         && (cam_dpath != NULL)                         \
         && (xpt_path_comp(cam_dpath, path) >= 0)       \
         && (xpt_path_comp(cam_dpath, path) < 2)) {     \
                xpt_print_path(path);                   \
                printf printfargs;                      \
                if (cam_debug_delay != 0)               \
                        DELAY(cam_debug_delay);         \
        }
 
#define CAM_DEBUG_DEV(dev, flag, printfargs)            \
        if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags) \
         && (cam_dpath != NULL)                         \
         && (xpt_path_comp_dev(cam_dpath, dev) >= 0)    \
         && (xpt_path_comp_dev(cam_dpath, dev) < 2)) {  \
                xpt_print_device(dev);                  \
                printf printfargs;                      \
                if (cam_debug_delay != 0)               \
                        DELAY(cam_debug_delay);         \
        }
 
#define CAM_DEBUG_PRINT(flag, printfargs)               \
        if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags)) {      \
                printf("cam_debug: ");                  \
                printf printfargs;                      \
                if (cam_debug_delay != 0)               \
                        DELAY(cam_debug_delay);         \
        }
 
#define CAM_DEBUG_PATH_PRINT(flag, path, printfargs)    \
        if (((flag) & (CAM_DEBUG_COMPILE) & cam_dflags)) {      \
                xpt_print(path, "cam_debug: ");         \
                printf printfargs;                      \
                if (cam_debug_delay != 0)               \
                        DELAY(cam_debug_delay);         \
        }
 
#else /* !_KERNEL */
 
#define CAM_DEBUGGED(A, B)      0
#define CAM_DEBUG(A, B, C)
#define CAM_DEBUG_PRINT(A, B)
#define CAM_DEBUG_PATH_PRINT(A, B, C)
 
#endif /* _KERNEL */
 
#endif /* _CAM_CAM_DEBUG_H */