2 * Copyright (c) International Business Machines Corp., 2006
4 * SPDX-License-Identifier: GPL-2.0+
6 * Author: Artem Bityutskiy (Битюцкий Артём)
9 #ifndef __UBI_DEBUG_H__
10 #define __UBI_DEBUG_H__
12 void ubi_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len);
13 void ubi_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr);
14 void ubi_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr);
17 #include <linux/random.h>
20 #define ubi_assert(expr) do { \
21 if (unlikely(!(expr))) { \
22 pr_crit("UBI assert failed in %s at %u (pid %d)\n", \
23 __func__, __LINE__, current->pid); \
28 #define ubi_dbg_print_hex_dump(l, ps, pt, r, g, b, len, a) \
29 print_hex_dump(l, ps, pt, r, g, b, len, a)
31 #define ubi_dbg_msg(type, fmt, ...) \
32 pr_debug("UBI DBG " type " (pid %d): " fmt "\n", current->pid, \
35 /* General debugging messages */
36 #define dbg_gen(fmt, ...) ubi_dbg_msg("gen", fmt, ##__VA_ARGS__)
37 /* Messages from the eraseblock association sub-system */
38 #define dbg_eba(fmt, ...) ubi_dbg_msg("eba", fmt, ##__VA_ARGS__)
39 /* Messages from the wear-leveling sub-system */
40 #define dbg_wl(fmt, ...) ubi_dbg_msg("wl", fmt, ##__VA_ARGS__)
41 /* Messages from the input/output sub-system */
42 #define dbg_io(fmt, ...) ubi_dbg_msg("io", fmt, ##__VA_ARGS__)
43 /* Initialization and build messages */
44 #define dbg_bld(fmt, ...) ubi_dbg_msg("bld", fmt, ##__VA_ARGS__)
46 void ubi_dump_vol_info(const struct ubi_volume *vol);
47 void ubi_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx);
48 void ubi_dump_av(const struct ubi_ainf_volume *av);
49 void ubi_dump_aeb(const struct ubi_ainf_peb *aeb, int type);
50 void ubi_dump_mkvol_req(const struct ubi_mkvol_req *req);
51 int ubi_self_check_all_ff(struct ubi_device *ubi, int pnum, int offset,
53 int ubi_debugfs_init(void);
54 void ubi_debugfs_exit(void);
55 int ubi_debugfs_init_dev(struct ubi_device *ubi);
56 void ubi_debugfs_exit_dev(struct ubi_device *ubi);
59 * ubi_dbg_is_bgt_disabled - if the background thread is disabled.
60 * @ubi: UBI device description object
62 * Returns non-zero if the UBI background thread is disabled for testing
65 static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi)
67 return ubi->dbg.disable_bgt;
71 * ubi_dbg_is_bitflip - if it is time to emulate a bit-flip.
72 * @ubi: UBI device description object
74 * Returns non-zero if a bit-flip should be emulated, otherwise returns zero.
76 static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
78 if (ubi->dbg.emulate_bitflips)
79 return !(prandom_u32() % 200);
84 * ubi_dbg_is_write_failure - if it is time to emulate a write failure.
85 * @ubi: UBI device description object
87 * Returns non-zero if a write failure should be emulated, otherwise returns
90 static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
92 if (ubi->dbg.emulate_io_failures)
93 return !(prandom_u32() % 500);
98 * ubi_dbg_is_erase_failure - if its time to emulate an erase failure.
99 * @ubi: UBI device description object
101 * Returns non-zero if an erase failure should be emulated, otherwise returns
104 static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi)
106 if (ubi->dbg.emulate_io_failures)
107 return !(prandom_u32() % 400);
111 static inline int ubi_dbg_chk_io(const struct ubi_device *ubi)
113 return ubi->dbg.chk_io;
116 static inline int ubi_dbg_chk_gen(const struct ubi_device *ubi)
118 return ubi->dbg.chk_gen;
121 static inline int ubi_dbg_chk_fastmap(const struct ubi_device *ubi)
123 return ubi->dbg.chk_fastmap;
126 static inline void ubi_enable_dbg_chk_fastmap(struct ubi_device *ubi)
128 ubi->dbg.chk_fastmap = 1;
131 int ubi_dbg_power_cut(struct ubi_device *ubi, int caller);
132 #endif /* !__UBI_DEBUG_H__ */