1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright (c) International Business Machines Corp., 2006
5 * Author: Artem Bityutskiy (Битюцкий Артём)
8 #ifndef __UBI_DEBUG_H__
9 #define __UBI_DEBUG_H__
11 void ubi_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len);
12 void ubi_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr);
13 void ubi_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr);
16 #include <linux/random.h>
22 #define ubi_assert(expr) do { \
23 if (unlikely(!(expr))) { \
24 pr_crit("UBI assert failed in %s at %u (pid %d)\n", \
25 __func__, __LINE__, current->pid); \
30 #define ubi_assert(expr) do { \
31 if (unlikely(!(expr))) { \
32 pr_debug("UBI assert failed in %s at %u\n", \
33 __func__, __LINE__); \
39 #define ubi_dbg_print_hex_dump(ps, pt, r, g, b, len, a) \
40 print_hex_dump(ps, pt, r, g, b, len, a)
42 #define ubi_dbg_msg(type, fmt, ...) \
43 pr_debug("UBI DBG " type " (pid %d): " fmt "\n", current->pid, \
46 /* General debugging messages */
47 #define dbg_gen(fmt, ...) ubi_dbg_msg("gen", fmt, ##__VA_ARGS__)
48 /* Messages from the eraseblock association sub-system */
49 #define dbg_eba(fmt, ...) ubi_dbg_msg("eba", fmt, ##__VA_ARGS__)
50 /* Messages from the wear-leveling sub-system */
51 #define dbg_wl(fmt, ...) ubi_dbg_msg("wl", fmt, ##__VA_ARGS__)
52 /* Messages from the input/output sub-system */
53 #define dbg_io(fmt, ...) ubi_dbg_msg("io", fmt, ##__VA_ARGS__)
54 /* Initialization and build messages */
55 #define dbg_bld(fmt, ...) ubi_dbg_msg("bld", fmt, ##__VA_ARGS__)
57 void ubi_dump_vol_info(const struct ubi_volume *vol);
58 void ubi_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx);
59 void ubi_dump_av(const struct ubi_ainf_volume *av);
60 void ubi_dump_aeb(const struct ubi_ainf_peb *aeb, int type);
61 void ubi_dump_mkvol_req(const struct ubi_mkvol_req *req);
62 int ubi_self_check_all_ff(struct ubi_device *ubi, int pnum, int offset,
64 int ubi_debugfs_init(void);
65 void ubi_debugfs_exit(void);
66 int ubi_debugfs_init_dev(struct ubi_device *ubi);
67 void ubi_debugfs_exit_dev(struct ubi_device *ubi);
70 * ubi_dbg_is_bgt_disabled - if the background thread is disabled.
71 * @ubi: UBI device description object
73 * Returns non-zero if the UBI background thread is disabled for testing
76 static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi)
78 return ubi->dbg.disable_bgt;
82 * ubi_dbg_is_bitflip - if it is time to emulate a bit-flip.
83 * @ubi: UBI device description object
85 * Returns non-zero if a bit-flip should be emulated, otherwise returns zero.
87 static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
89 if (ubi->dbg.emulate_bitflips)
90 return !(prandom_u32() % 200);
95 * ubi_dbg_is_write_failure - if it is time to emulate a write failure.
96 * @ubi: UBI device description object
98 * Returns non-zero if a write failure should be emulated, otherwise returns
101 static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
103 if (ubi->dbg.emulate_io_failures)
104 return !(prandom_u32() % 500);
109 * ubi_dbg_is_erase_failure - if its time to emulate an erase failure.
110 * @ubi: UBI device description object
112 * Returns non-zero if an erase failure should be emulated, otherwise returns
115 static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi)
117 if (ubi->dbg.emulate_io_failures)
118 return !(prandom_u32() % 400);
122 static inline int ubi_dbg_chk_io(const struct ubi_device *ubi)
124 return ubi->dbg.chk_io;
127 static inline int ubi_dbg_chk_gen(const struct ubi_device *ubi)
129 return ubi->dbg.chk_gen;
132 static inline int ubi_dbg_chk_fastmap(const struct ubi_device *ubi)
134 return ubi->dbg.chk_fastmap;
137 static inline void ubi_enable_dbg_chk_fastmap(struct ubi_device *ubi)
139 ubi->dbg.chk_fastmap = 1;
142 int ubi_dbg_power_cut(struct ubi_device *ubi, int caller);
143 #endif /* !__UBI_DEBUG_H__ */