1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (c) International Business Machines Corp., 2006 4 * 5 * Author: Artem Bityutskiy (Битюцкий Артём) 6 */ 7 8 #ifndef __UBI_DEBUG_H__ 9 #define __UBI_DEBUG_H__ 10 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); 14 15 #ifndef __UBOOT__ 16 #include <linux/random.h> 17 #endif 18 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); \ 23 dump_stack(); \ 24 } \ 25 } while (0) 26 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) 29 30 #define ubi_dbg_msg(type, fmt, ...) \ 31 pr_debug("UBI DBG " type " (pid %d): " fmt "\n", current->pid, \ 32 ##__VA_ARGS__) 33 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__) 44 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, 51 int len); 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); 56 57 /** 58 * ubi_dbg_is_bgt_disabled - if the background thread is disabled. 59 * @ubi: UBI device description object 60 * 61 * Returns non-zero if the UBI background thread is disabled for testing 62 * purposes. 63 */ 64 static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi) 65 { 66 return ubi->dbg.disable_bgt; 67 } 68 69 /** 70 * ubi_dbg_is_bitflip - if it is time to emulate a bit-flip. 71 * @ubi: UBI device description object 72 * 73 * Returns non-zero if a bit-flip should be emulated, otherwise returns zero. 74 */ 75 static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi) 76 { 77 if (ubi->dbg.emulate_bitflips) 78 return !(prandom_u32() % 200); 79 return 0; 80 } 81 82 /** 83 * ubi_dbg_is_write_failure - if it is time to emulate a write failure. 84 * @ubi: UBI device description object 85 * 86 * Returns non-zero if a write failure should be emulated, otherwise returns 87 * zero. 88 */ 89 static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi) 90 { 91 if (ubi->dbg.emulate_io_failures) 92 return !(prandom_u32() % 500); 93 return 0; 94 } 95 96 /** 97 * ubi_dbg_is_erase_failure - if its time to emulate an erase failure. 98 * @ubi: UBI device description object 99 * 100 * Returns non-zero if an erase failure should be emulated, otherwise returns 101 * zero. 102 */ 103 static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi) 104 { 105 if (ubi->dbg.emulate_io_failures) 106 return !(prandom_u32() % 400); 107 return 0; 108 } 109 110 static inline int ubi_dbg_chk_io(const struct ubi_device *ubi) 111 { 112 return ubi->dbg.chk_io; 113 } 114 115 static inline int ubi_dbg_chk_gen(const struct ubi_device *ubi) 116 { 117 return ubi->dbg.chk_gen; 118 } 119 120 static inline int ubi_dbg_chk_fastmap(const struct ubi_device *ubi) 121 { 122 return ubi->dbg.chk_fastmap; 123 } 124 125 static inline void ubi_enable_dbg_chk_fastmap(struct ubi_device *ubi) 126 { 127 ubi->dbg.chk_fastmap = 1; 128 } 129 130 int ubi_dbg_power_cut(struct ubi_device *ubi, int caller); 131 #endif /* !__UBI_DEBUG_H__ */ 132