xref: /titanic_52/usr/src/uts/common/io/e1000g/e1000g_debug.c (revision a49a392f179e40c74ea8903bf2793b2aa49efdf1)
1 /*
2  * This file is provided under a CDDLv1 license.  When using or
3  * redistributing this file, you may do so under this license.
4  * In redistributing this file this license must be included
5  * and no other modification of this header file is permitted.
6  *
7  * CDDL LICENSE SUMMARY
8  *
9  * Copyright(c) 1999 - 2007 Intel Corporation. All rights reserved.
10  *
11  * The contents of this file are subject to the terms of Version
12  * 1.0 of the Common Development and Distribution License (the "License").
13  *
14  * You should have received a copy of the License with this software.
15  * You can obtain a copy of the License at
16  *	http://www.opensolaris.org/os/licensing.
17  * See the License for the specific language governing permissions
18  * and limitations under the License.
19  */
20 
21 /*
22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms of the CDDLv1.
24  */
25 
26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 /*
29  * **********************************************************************
30  *									*
31  * Module Name:								*
32  * 	e1000g_debug.c							*
33  *									*
34  * Abstract:								*
35  *	This module includes the debug routines				*
36  *									*
37  * **********************************************************************
38  */
39 #ifdef GCC
40 #ifdef __STDC__
41 #include <stdarg.h>
42 #else
43 #include <varargs.h>
44 #endif
45 #define	_SYS_VARARGS_H
46 #endif
47 
48 #include "e1000g_debug.h"
49 #include "e1000g_sw.h"
50 
51 #ifdef E1000G_DEBUG
52 int e1000g_debug = E1000G_WARN_LEVEL;
53 #endif
54 int e1000g_log_mode = E1000G_LOG_PRINT;
55 
56 void
57 e1000g_log(void *instance, int level, char *fmt, ...)
58 {
59 	struct e1000g *Adapter = (struct e1000g *)instance;
60 	auto char name[NAMELEN];
61 	auto char buf[BUFSZ];
62 	va_list ap;
63 
64 	switch (level) {
65 #ifdef E1000G_DEBUG
66 	case E1000G_VERBOSE_LEVEL:	/* 16 or 0x010 */
67 		if (e1000g_debug < E1000G_VERBOSE_LEVEL)
68 			return;
69 		level = CE_CONT;
70 		break;
71 
72 	case E1000G_TRACE_LEVEL:	/* 8 or 0x008 */
73 		if (e1000g_debug < E1000G_TRACE_LEVEL)
74 			return;
75 		level = CE_CONT;
76 		break;
77 
78 	case E1000G_INFO_LEVEL:		/* 4 or 0x004 */
79 		if (e1000g_debug < E1000G_INFO_LEVEL)
80 			return;
81 		level = CE_CONT;
82 		break;
83 
84 	case E1000G_WARN_LEVEL:		/* 2 or 0x002 */
85 		if (e1000g_debug < E1000G_WARN_LEVEL)
86 			return;
87 		level = CE_CONT;
88 		break;
89 
90 	case E1000G_ERRS_LEVEL:		/* 1 or 0x001 */
91 		level = CE_CONT;
92 		break;
93 #else
94 	case CE_CONT:
95 	case CE_NOTE:
96 	case CE_WARN:
97 	case CE_PANIC:
98 		break;
99 #endif
100 	default:
101 		level = CE_CONT;
102 		break;
103 	}
104 
105 	if (Adapter != NULL) {
106 		(void) sprintf(name, "%s - e1000g[%d] ",
107 		    ddi_get_name(Adapter->dip), ddi_get_instance(Adapter->dip));
108 	} else {
109 		(void) sprintf(name, "e1000g");
110 	}
111 	/*
112 	 * va_start uses built in macro __builtin_va_alist from the
113 	 * compiler libs which requires compiler system to have
114 	 * __BUILTIN_VA_ARG_INCR defined.
115 	 */
116 	/*
117 	 * Many compilation systems depend upon the use of special functions
118 	 * built into the the compilation system to handle variable argument
119 	 * lists and stack allocations.  The method to obtain this in SunOS
120 	 * is to define the feature test macro "__BUILTIN_VA_ARG_INCR" which
121 	 * enables the following special built-in functions:
122 	 *	__builtin_alloca
123 	 *	__builtin_va_alist
124 	 *	__builtin_va_arg_incr
125 	 * It is intended that the compilation system define this feature test
126 	 * macro, not the user of the system.
127 	 *
128 	 * The tests on the processor type are to provide a transitional period
129 	 * for existing compilation systems, and may be removed in a future
130 	 * release.
131 	 */
132 	/*
133 	 * Using GNU gcc compiler it doesn't expand to va_start....
134 	 */
135 	va_start(ap, fmt);
136 	(void) vsprintf(buf, fmt, ap);
137 	va_end(ap);
138 
139 	if ((e1000g_log_mode & E1000G_LOG_ALL) == E1000G_LOG_ALL)
140 		cmn_err(level, "%s: %s", name, buf);
141 	else if (e1000g_log_mode & E1000G_LOG_DISPLAY)
142 		cmn_err(level, "^%s: %s", name, buf);
143 	else if (e1000g_log_mode & E1000G_LOG_PRINT)
144 		cmn_err(level, "!%s: %s", name, buf);
145 	else /* if they are not set properly then do both */
146 		cmn_err(level, "%s: %s", name, buf);
147 }
148