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>
19 #define ubi_assert(expr) do { \
20 if (unlikely(!(expr))) { \
21 pr_crit("UBI assert failed in %s at %u (pid %d)\n", \
22 __func__, __LINE__, current->pid); \
27 #define ubi_dbg_print_hex_dump(l, ps, pt, r, g, b, len, a) \
28 print_hex_dump(l, ps, pt, r, g, b, len, a)
30 #define ubi_dbg_msg(type, fmt, ...) \
31 pr_debug("UBI DBG " type " (pid %d): " fmt "\n", current->pid, \
34 /* General debugging messages */
35 #define dbg_gen(fmt, ...) ubi_dbg_msg("gen", fmt, ##__VA_ARGS__)
36 /* Messages from the eraseblock association sub-system */
37 #define dbg_eba(fmt, ...) ubi_dbg_msg("eba", fmt, ##__VA_ARGS__)
38 /* Messages from the wear-leveling sub-system */
39 #define dbg_wl(fmt, ...) ubi_dbg_msg("wl", fmt, ##__VA_ARGS__)
40 /* Messages from the input/output sub-system */
41 #define dbg_io(fmt, ...) ubi_dbg_msg("io", fmt, ##__VA_ARGS__)
42 /* Initialization and build messages */
43 #define dbg_bld(fmt, ...) ubi_dbg_msg("bld", fmt, ##__VA_ARGS__)
45 void ubi_dump_vol_info(const struct ubi_volume *vol);
46 void ubi_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx);
47 void ubi_dump_av(const struct ubi_ainf_volume *av);
48 void ubi_dump_aeb(const struct ubi_ainf_peb *aeb, int type);
49 void ubi_dump_mkvol_req(const struct ubi_mkvol_req *req);
50 int ubi_self_check_all_ff(struct ubi_device *ubi, int pnum, int offset,
52 int ubi_debugfs_init(void);
53 void ubi_debugfs_exit(void);
54 int ubi_debugfs_init_dev(struct ubi_device *ubi);
55 void ubi_debugfs_exit_dev(struct ubi_device *ubi);
58 * ubi_dbg_is_bgt_disabled - if the background thread is disabled.
59 * @ubi: UBI device description object
61 * Returns non-zero if the UBI background thread is disabled for testing
64 static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi)
66 return ubi->dbg.disable_bgt;
70 * ubi_dbg_is_bitflip - if it is time to emulate a bit-flip.
71 * @ubi: UBI device description object
73 * Returns non-zero if a bit-flip should be emulated, otherwise returns zero.
75 static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
77 if (ubi->dbg.emulate_bitflips)
78 return !(prandom_u32() % 200);
83 * ubi_dbg_is_write_failure - if it is time to emulate a write failure.
84 * @ubi: UBI device description object
86 * Returns non-zero if a write failure should be emulated, otherwise returns
89 static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
91 if (ubi->dbg.emulate_io_failures)
92 return !(prandom_u32() % 500);
97 * ubi_dbg_is_erase_failure - if its time to emulate an erase failure.
98 * @ubi: UBI device description object
100 * Returns non-zero if an erase failure should be emulated, otherwise returns
103 static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi)
105 if (ubi->dbg.emulate_io_failures)
106 return !(prandom_u32() % 400);
110 static inline int ubi_dbg_chk_io(const struct ubi_device *ubi)
112 return ubi->dbg.chk_io;
115 static inline int ubi_dbg_chk_gen(const struct ubi_device *ubi)
117 return ubi->dbg.chk_gen;
120 static inline int ubi_dbg_chk_fastmap(const struct ubi_device *ubi)
122 return ubi->dbg.chk_fastmap;
125 static inline void ubi_enable_dbg_chk_fastmap(struct ubi_device *ubi)
127 ubi->dbg.chk_fastmap = 1;
130 int ubi_dbg_power_cut(struct ubi_device *ubi, int caller);
131 #endif /* !__UBI_DEBUG_H__ */