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
57static inline void
58hex_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
88static inline void
89print_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