1 | /* $NetBSD: printk.h,v 1.4 2014/08/06 13:52:33 riastradh Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2013 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Taylor R. Campbell. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
29 | * POSSIBILITY OF SUCH DAMAGE. |
30 | */ |
31 | |
32 | #ifndef _LINUX_PRINTK_H_ |
33 | #define _LINUX_PRINTK_H_ |
34 | |
35 | #include <sys/param.h> |
36 | #include <sys/systm.h> |
37 | |
38 | #define printk printf |
39 | #define vprintk vprintf |
40 | #define printk_once printf |
41 | #define pr_err printf /* XXX */ |
42 | #define pr_cont printf /* XXX */ |
43 | #define pr_info printf /* XXX */ |
44 | #define pr_info_once printf /* XXX */ |
45 | #define pr_warn_once printf /* XXX */ |
46 | #define KERN_DEBUG "drm kern debug: " |
47 | #define KERN_INFO "drm kern info: " |
48 | #define KERN_WARNING "drm kern warning: " |
49 | #define KERN_ERR "drm kern error: " |
50 | #define KERN_CRIT "drm kern crit: " |
51 | #define KERN_CONT "" |
52 | |
53 | #define DUMP_PREFIX_NONE 0 |
54 | #define DUMP_PREFIX_OFFSET 1 |
55 | #define DUMP_PREFIX_ADDRESS 2 |
56 | |
57 | static inline void |
58 | hex_dump_to_buffer(const void *buf, size_t buf_size, int bytes_per_line, |
59 | int bytes_per_group, char *output, size_t output_size, bool ascii __unused) |
60 | { |
61 | const uint8_t *bytes = buf; |
62 | size_t i = 0, n; |
63 | |
64 | KASSERT(output_size >= 1); |
65 | KASSERT((bytes_per_line == 16) || (bytes_per_line == 32)); |
66 | KASSERT(powerof2(bytes_per_group)); |
67 | KASSERT(0 < bytes_per_group); |
68 | KASSERT(bytes_per_group <= 8); |
69 | |
70 | output[output_size - 1] = '\0'; |
71 | while (i < buf_size) { |
72 | n = snprintf(output, output_size, "%02x" , bytes[i++]); |
73 | if (n >= output_size) |
74 | break; |
75 | output += n; output_size -= n; |
76 | if ((i == buf_size) || (0 == (i % bytes_per_line))) |
77 | n = snprintf(output, output_size, "\n" ); |
78 | else if ((0 < i) && (0 == (i % bytes_per_group))) |
79 | n = snprintf(output, output_size, " " ); |
80 | else |
81 | n = 0; |
82 | if (n >= output_size) |
83 | break; |
84 | output += n; output_size -= n; |
85 | } |
86 | } |
87 | |
88 | static inline void |
89 | print_hex_dump(const char *level, const char *prefix, int prefix_type, |
90 | int bytes_per_line, int bytes_per_group, const void *buf, size_t buf_size, |
91 | bool ascii) |
92 | { |
93 | const uint8_t *bytes = buf; |
94 | /* Two digits and one space/newline per byte, plus a null. */ |
95 | char line[32*3 + 1]; |
96 | |
97 | KASSERT((bytes_per_line == 16) || (bytes_per_line == 32)); |
98 | KASSERT(powerof2(bytes_per_group)); |
99 | KASSERT(0 < bytes_per_group); |
100 | KASSERT(bytes_per_group <= 8); |
101 | |
102 | while (0 < buf_size) { |
103 | const size_t n = MIN(buf_size, 32); |
104 | |
105 | switch (prefix_type) { |
106 | case DUMP_PREFIX_OFFSET: |
107 | printf("%08zu: " , (bytes - (const uint8_t *)buf)); |
108 | break; |
109 | |
110 | case DUMP_PREFIX_ADDRESS: |
111 | printf("%p: " , bytes); |
112 | break; |
113 | |
114 | case DUMP_PREFIX_NONE: |
115 | default: |
116 | break; |
117 | } |
118 | |
119 | hex_dump_to_buffer(bytes, n, bytes_per_line, bytes_per_group, |
120 | line, sizeof(line), ascii); |
121 | KASSERT(0 < strnlen(line, sizeof(line))); |
122 | KASSERT(line[strnlen(line, sizeof(line)) - 1] == '\n'); |
123 | printf("%s" , line); |
124 | |
125 | bytes += n; |
126 | buf_size -= n; |
127 | } |
128 | } |
129 | |
130 | #endif /* _LINUX_PRINTK_H_ */ |
131 | |