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 1.6 1999/12/29 04:54:25 peter Exp $ 29 * $DragonFly: src/sys/bus/cam/cam_debug.h,v 1.4 2007/11/18 17:53:01 pavalos Exp $ 30 */ 31 #ifndef _CAM_CAM_DEBUG_H 32 #define _CAM_CAM_DEBUG_H 1 33 34 #if defined(CAMDEBUG) && defined(_KERNEL) 35 #include <machine/clock.h> 36 #endif /* CAMDEBUG && _KERNEL */ 37 38 /* 39 * Debugging flags. 40 */ 41 typedef enum { 42 CAM_DEBUG_NONE = 0x00, /* no debugging */ 43 CAM_DEBUG_INFO = 0x01, /* scsi commands, errors, data */ 44 CAM_DEBUG_TRACE = 0x02, /* routine flow tracking */ 45 CAM_DEBUG_SUBTRACE = 0x04, /* internal to routine flows */ 46 CAM_DEBUG_CDB = 0x08, /* print out SCSI CDBs only */ 47 CAM_DEBUG_XPT = 0x10, /* print out xpt scheduling */ 48 CAM_DEBUG_PERIPH = 0x20 /* print out peripheral calls */ 49 } cam_debug_flags; 50 51 #if defined(CAMDEBUG) && defined(_KERNEL) 52 53 /* Path we want to debug */ 54 extern struct cam_path *cam_dpath; 55 /* Current debug levels set */ 56 extern u_int32_t cam_dflags; 57 /* Printf delay value (to prevent scrolling) */ 58 extern u_int32_t cam_debug_delay; 59 60 /* Debugging macros. */ 61 #define CAM_DEBUGGED(path, flag) \ 62 ((cam_dflags & (flag)) \ 63 && (cam_dpath != NULL) \ 64 && (xpt_path_comp(cam_dpath, path) >= 0) \ 65 && (xpt_path_comp(cam_dpath, path) < 2)) 66 #define CAM_DEBUG(path, flag, kprintfargs) \ 67 if ((cam_dflags & (flag)) \ 68 && (cam_dpath != NULL) \ 69 && (xpt_path_comp(cam_dpath, path) >= 0) \ 70 && (xpt_path_comp(cam_dpath, path) < 2)) { \ 71 xpt_print_path(path); \ 72 kprintf kprintfargs; \ 73 if (cam_debug_delay != 0) \ 74 DELAY(cam_debug_delay); \ 75 } 76 #define CAM_DEBUG_PRINT(flag, kprintfargs) \ 77 if (cam_dflags & (flag)) { \ 78 kprintf("cam_debug: "); \ 79 kprintf kprintfargs; \ 80 if (cam_debug_delay != 0) \ 81 DELAY(cam_debug_delay); \ 82 } 83 84 #else /* !CAMDEBUG || !_KERNEL */ 85 86 #define CAM_DEBUGGED(A, B) 0 87 #define CAM_DEBUG(A, B, C) 88 #define CAM_DEBUG_PRINT(A, B) 89 90 #endif /* CAMDEBUG && _KERNEL */ 91 92 #endif /* _CAM_CAM_DEBUG_H */ 93