/* * Copyright (c) International Business Machines Corp., 2006 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See * the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Author: Artem Bityutskiy (Битюцкий Артём) */ #ifndef __UBI_DEBUG_H__ #define __UBI_DEBUG_H__ #ifdef CONFIG_MTD_UBI_DEBUG #include <linux/random.h> #define dbg_err(fmt, ...) ubi_err(fmt, ##__VA_ARGS__) #define ubi_assert(expr) do { \ if (unlikely(!(expr))) { \ printk(KERN_CRIT "UBI assert failed in %s at %u (pid %d)\n", \ __func__, __LINE__, current->pid); \ ubi_dbg_dump_stack(); \ } \ } while (0) #define dbg_msg(fmt, ...) \ printk(KERN_DEBUG "UBI DBG (pid %d): %s: " fmt "\n", \ current->pid, __func__, ##__VA_ARGS__) #define ubi_dbg_dump_stack() dump_stack() struct ubi_ec_hdr; struct ubi_vid_hdr; struct ubi_volume; struct ubi_vtbl_record; struct ubi_scan_volume; struct ubi_scan_leb; struct ubi_mkvol_req; void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr); void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr); void ubi_dbg_dump_vol_info(const struct ubi_volume *vol); void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx); void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv); void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type); void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req); void ubi_dbg_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len); #ifdef CONFIG_MTD_UBI_DEBUG_MSG /* General debugging messages */ #define dbg_gen(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) #else #define dbg_gen(fmt, ...) ({}) #endif #ifdef CONFIG_MTD_UBI_DEBUG_MSG_EBA /* Messages from the eraseblock association sub-system */ #define dbg_eba(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) #else #define dbg_eba(fmt, ...) ({}) #endif #ifdef CONFIG_MTD_UBI_DEBUG_MSG_WL /* Messages from the wear-leveling sub-system */ #define dbg_wl(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) #else #define dbg_wl(fmt, ...) ({}) #endif #ifdef CONFIG_MTD_UBI_DEBUG_MSG_IO /* Messages from the input/output sub-system */ #define dbg_io(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) #else #define dbg_io(fmt, ...) ({}) #endif #ifdef CONFIG_MTD_UBI_DEBUG_MSG_BLD /* Initialization and build messages */ #define dbg_bld(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) #define UBI_IO_DEBUG 1 #else #define dbg_bld(fmt, ...) ({}) #define UBI_IO_DEBUG 0 #endif #ifdef CONFIG_MTD_UBI_DEBUG_PARANOID int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len); int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum, int offset, int len); #else #define ubi_dbg_check_all_ff(ubi, pnum, offset, len) 0 #define ubi_dbg_check_write(ubi, buf, pnum, offset, len) 0 #endif #ifdef CONFIG_MTD_UBI_DEBUG_DISABLE_BGT #define DBG_DISABLE_BGT 1 #else #define DBG_DISABLE_BGT 0 #endif #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_BITFLIPS /** * ubi_dbg_is_bitflip - if it is time to emulate a bit-flip. * * Returns non-zero if a bit-flip should be emulated, otherwise returns zero. */ static inline int ubi_dbg_is_bitflip(void) { return !(random32() % 200); } #else #define ubi_dbg_is_bitflip() 0 #endif #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_WRITE_FAILURES /** * ubi_dbg_is_write_failure - if it is time to emulate a write failure. * * Returns non-zero if a write failure should be emulated, otherwise returns * zero. */ static inline int ubi_dbg_is_write_failure(void) { return !(random32() % 500); } #else #define ubi_dbg_is_write_failure() 0 #endif #ifdef CONFIG_MTD_UBI_DEBUG_EMULATE_ERASE_FAILURES /** * ubi_dbg_is_erase_failure - if its time to emulate an erase failure. * * Returns non-zero if an erase failure should be emulated, otherwise returns * zero. */ static inline int ubi_dbg_is_erase_failure(void) { return !(random32() % 400); } #else #define ubi_dbg_is_erase_failure() 0 #endif #else #define ubi_assert(expr) ({}) #define dbg_err(fmt, ...) ({}) #define dbg_msg(fmt, ...) ({}) #define dbg_gen(fmt, ...) ({}) #define dbg_eba(fmt, ...) ({}) #define dbg_wl(fmt, ...) ({}) #define dbg_io(fmt, ...) ({}) #define dbg_bld(fmt, ...) ({}) #define ubi_dbg_dump_stack() ({}) #define ubi_dbg_dump_ec_hdr(ec_hdr) ({}) #define ubi_dbg_dump_vid_hdr(vid_hdr) ({}) #define ubi_dbg_dump_vol_info(vol) ({}) #define ubi_dbg_dump_vtbl_record(r, idx) ({}) #define ubi_dbg_dump_sv(sv) ({}) #define ubi_dbg_dump_seb(seb, type) ({}) #define ubi_dbg_dump_mkvol_req(req) ({}) #define ubi_dbg_dump_flash(ubi, pnum, offset, len) ({}) #define UBI_IO_DEBUG 0 #define DBG_DISABLE_BGT 0 #define ubi_dbg_is_bitflip() 0 #define ubi_dbg_is_write_failure() 0 #define ubi_dbg_is_erase_failure() 0 #define ubi_dbg_check_all_ff(ubi, pnum, offset, len) 0 #define ubi_dbg_check_write(ubi, buf, pnum, offset, len) 0 #endif /* !CONFIG_MTD_UBI_DEBUG */ #endif /* !__UBI_DEBUG_H__ */