1 /* 2 * Copyright (c) International Business Machines Corp., 2006 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 * 6 * Author: Artem Bityutskiy (Битюцкий Артём) 7 */ 8 9 #ifndef __UBI_DEBUG_H__ 10 #define __UBI_DEBUG_H__ 11 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); 15 16 #ifndef __UBOOT__ 17 #include <linux/random.h> 18 #endif 19 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); \ 24 dump_stack(); \ 25 } \ 26 } while (0) 27 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) 30 31 #define ubi_dbg_msg(type, fmt, ...) \ 32 pr_debug("UBI DBG " type " (pid %d): " fmt "\n", current->pid, \ 33 ##__VA_ARGS__) 34 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__) 45 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, 52 int len); 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); 57 58 /** 59 * ubi_dbg_is_bgt_disabled - if the background thread is disabled. 60 * @ubi: UBI device description object 61 * 62 * Returns non-zero if the UBI background thread is disabled for testing 63 * purposes. 64 */ 65 static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi) 66 { 67 return ubi->dbg.disable_bgt; 68 } 69 70 /** 71 * ubi_dbg_is_bitflip - if it is time to emulate a bit-flip. 72 * @ubi: UBI device description object 73 * 74 * Returns non-zero if a bit-flip should be emulated, otherwise returns zero. 75 */ 76 static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi) 77 { 78 if (ubi->dbg.emulate_bitflips) 79 return !(prandom_u32() % 200); 80 return 0; 81 } 82 83 /** 84 * ubi_dbg_is_write_failure - if it is time to emulate a write failure. 85 * @ubi: UBI device description object 86 * 87 * Returns non-zero if a write failure should be emulated, otherwise returns 88 * zero. 89 */ 90 static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi) 91 { 92 if (ubi->dbg.emulate_io_failures) 93 return !(prandom_u32() % 500); 94 return 0; 95 } 96 97 /** 98 * ubi_dbg_is_erase_failure - if its time to emulate an erase failure. 99 * @ubi: UBI device description object 100 * 101 * Returns non-zero if an erase failure should be emulated, otherwise returns 102 * zero. 103 */ 104 static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi) 105 { 106 if (ubi->dbg.emulate_io_failures) 107 return !(prandom_u32() % 400); 108 return 0; 109 } 110 111 static inline int ubi_dbg_chk_io(const struct ubi_device *ubi) 112 { 113 return ubi->dbg.chk_io; 114 } 115 116 static inline int ubi_dbg_chk_gen(const struct ubi_device *ubi) 117 { 118 return ubi->dbg.chk_gen; 119 } 120 #endif /* !__UBI_DEBUG_H__ */ 121