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1 | /* |
2 | * Copyright (c) International Business Machines Corp., 2006 | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
12 | * the GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | * | |
18 | * Author: Artem Bityutskiy (Битюцкий Артём) | |
19 | */ | |
20 | ||
21 | #ifndef __UBI_DEBUG_H__ | |
22 | #define __UBI_DEBUG_H__ | |
23 | ||
24 | #ifdef CONFIG_MTD_UBI_DEBUG | |
25 | #include <linux/random.h> | |
26 | ||
27 | #define ubi_assert(expr) BUG_ON(!(expr)) | |
28 | #define dbg_err(fmt, ...) ubi_err(fmt, ##__VA_ARGS__) | |
29 | #else | |
30 | #define ubi_assert(expr) ({}) | |
31 | #define dbg_err(fmt, ...) ({}) | |
32 | #endif | |
33 | ||
34 | #ifdef CONFIG_MTD_UBI_DEBUG_DISABLE_BGT | |
35 | #define DBG_DISABLE_BGT 1 | |
36 | #else | |
37 | #define DBG_DISABLE_BGT 0 | |
38 | #endif | |
39 | ||
40 | #ifdef CONFIG_MTD_UBI_DEBUG_MSG | |
41 | /* Generic debugging message */ | |
42 | #define dbg_msg(fmt, ...) \ | |
43 | printk(KERN_DEBUG "UBI DBG: %s: " fmt "\n", __FUNCTION__, ##__VA_ARGS__) | |
44 | ||
45 | #define ubi_dbg_dump_stack() dump_stack() | |
46 | ||
47 | struct ubi_ec_hdr; | |
48 | struct ubi_vid_hdr; | |
49 | struct ubi_volume; | |
50 | struct ubi_vtbl_record; | |
51 | struct ubi_scan_volume; | |
52 | struct ubi_scan_leb; | |
53 | struct ubi_mkvol_req; | |
54 | ||
55 | void ubi_dbg_print(int type, const char *func, const char *fmt, ...); | |
56 | void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr); | |
57 | void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr); | |
58 | void ubi_dbg_dump_vol_info(const struct ubi_volume *vol); | |
59 | void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx); | |
60 | void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv); | |
61 | void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type); | |
62 | void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req); | |
63 | void ubi_dbg_hexdump(const void *buf, int size); | |
64 | ||
65 | #else | |
66 | ||
67 | #define dbg_msg(fmt, ...) ({}) | |
68 | #define ubi_dbg_dump_stack() ({}) | |
69 | #define ubi_dbg_print(func, fmt, ...) ({}) | |
70 | #define ubi_dbg_dump_ec_hdr(ec_hdr) ({}) | |
71 | #define ubi_dbg_dump_vid_hdr(vid_hdr) ({}) | |
72 | #define ubi_dbg_dump_vol_info(vol) ({}) | |
73 | #define ubi_dbg_dump_vtbl_record(r, idx) ({}) | |
74 | #define ubi_dbg_dump_sv(sv) ({}) | |
75 | #define ubi_dbg_dump_seb(seb, type) ({}) | |
76 | #define ubi_dbg_dump_mkvol_req(req) ({}) | |
77 | #define ubi_dbg_hexdump(buf, size) ({}) | |
78 | ||
79 | #endif /* CONFIG_MTD_UBI_DEBUG_MSG */ | |
80 | ||
81 | #ifdef CONFIG_MTD_UBI_DEBUG_MSG_EBA | |
82 | /* Messages from the eraseblock association unit */ | |
83 | #define dbg_eba(fmt, ...) \ | |
84 | printk(KERN_DEBUG "UBI DBG eba: %s: " fmt "\n", __FUNCTION__, \ | |
85 | ##__VA_ARGS__) | |
86 | #else | |
87 | #define dbg_eba(fmt, ...) ({}) | |
88 | #endif | |
89 | ||
90 | #ifdef CONFIG_MTD_UBI_DEBUG_MSG_WL | |
91 | /* Messages from the wear-leveling unit */ | |
92 | #define dbg_wl(fmt, ...) \ | |
93 | printk(KERN_DEBUG "UBI DBG wl: %s: " fmt "\n", __FUNCTION__, \ | |
94 | ##__VA_ARGS__) | |
95 | #else | |
96 | #define dbg_wl(fmt, ...) ({}) | |
97 | #endif | |
98 | ||
99 | #ifdef CONFIG_MTD_UBI_DEBUG_MSG_IO | |
100 | /* Messages from the input/output unit */ | |
101 | #define dbg_io(fmt, ...) \ | |
102 | printk(KERN_DEBUG "UBI DBG io: %s: " fmt "\n", __FUNCTION__, \ | |
103 | ##__VA_ARGS__) | |
104 | #else | |
105 | #define dbg_io(fmt, ...) ({}) | |
106 | #endif | |
107 | ||
108 | #ifdef CONFIG_MTD_UBI_DEBUG_MSG_BLD | |
109 | /* Initialization and build messages */ | |
110 | #define dbg_bld(fmt, ...) \ | |
111 | printk(KERN_DEBUG "UBI DBG bld: %s: " fmt "\n", __FUNCTION__, \ | |
112 | ##__VA_ARGS__) | |
113 | #else | |
114 | #define dbg_bld(fmt, ...) ({}) | |
115 | #endif | |
116 | ||
117 | #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_BITFLIPS | |
118 | /** | |
119 | * ubi_dbg_is_bitflip - if it is time to emulate a bit-flip. | |
120 | * | |
121 | * Returns non-zero if a bit-flip should be emulated, otherwise returns zero. | |
122 | */ | |
123 | static inline int ubi_dbg_is_bitflip(void) | |
124 | { | |
125 | return !(random32() % 200); | |
126 | } | |
127 | #else | |
128 | #define ubi_dbg_is_bitflip() 0 | |
129 | #endif | |
130 | ||
131 | #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_WRITE_FAILURES | |
132 | /** | |
133 | * ubi_dbg_is_write_failure - if it is time to emulate a write failure. | |
134 | * | |
135 | * Returns non-zero if a write failure should be emulated, otherwise returns | |
136 | * zero. | |
137 | */ | |
138 | static inline int ubi_dbg_is_write_failure(void) | |
139 | { | |
140 | return !(random32() % 500); | |
141 | } | |
142 | #else | |
143 | #define ubi_dbg_is_write_failure() 0 | |
144 | #endif | |
145 | ||
146 | #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_ERASE_FAILURES | |
147 | /** | |
148 | * ubi_dbg_is_erase_failure - if its time to emulate an erase failure. | |
149 | * | |
150 | * Returns non-zero if an erase failure should be emulated, otherwise returns | |
151 | * zero. | |
152 | */ | |
153 | static inline int ubi_dbg_is_erase_failure(void) | |
154 | { | |
155 | return !(random32() % 400); | |
156 | } | |
157 | #else | |
158 | #define ubi_dbg_is_erase_failure() 0 | |
159 | #endif | |
160 | ||
161 | #endif /* !__UBI_DEBUG_H__ */ |