/* * 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) */ /* * Here we keep all the UBI debugging stuff which should normally be disabled * and compiled-out, but it is extremely helpful when hunting bugs or doing big * changes. */ #ifdef CONFIG_MTD_UBI_DEBUG #include "ubi.h" #include #include unsigned int ubi_msg_flags; module_param_named(debug_msgs, ubi_msg_flags, uint, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(debug_msgs, "Debug message type flags"); /** * ubi_dbg_dump_ec_hdr - dump an erase counter header. * @ec_hdr: the erase counter header to dump */ void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr) { printk(KERN_DEBUG "Erase counter header dump:\n"); printk(KERN_DEBUG "\tmagic %#08x\n", be32_to_cpu(ec_hdr->magic)); printk(KERN_DEBUG "\tversion %d\n", (int)ec_hdr->version); printk(KERN_DEBUG "\tec %llu\n", (long long)be64_to_cpu(ec_hdr->ec)); printk(KERN_DEBUG "\tvid_hdr_offset %d\n", be32_to_cpu(ec_hdr->vid_hdr_offset)); printk(KERN_DEBUG "\tdata_offset %d\n", be32_to_cpu(ec_hdr->data_offset)); printk(KERN_DEBUG "\timage_seq %d\n", be32_to_cpu(ec_hdr->image_seq)); printk(KERN_DEBUG "\thdr_crc %#08x\n", be32_to_cpu(ec_hdr->hdr_crc)); printk(KERN_DEBUG "erase counter header hexdump:\n"); print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, ec_hdr, UBI_EC_HDR_SIZE, 1); } /** * ubi_dbg_dump_vid_hdr - dump a volume identifier header. * @vid_hdr: the volume identifier header to dump */ void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr) { printk(KERN_DEBUG "Volume identifier header dump:\n"); printk(KERN_DEBUG "\tmagic %08x\n", be32_to_cpu(vid_hdr->magic)); printk(KERN_DEBUG "\tversion %d\n", (int)vid_hdr->version); printk(KERN_DEBUG "\tvol_type %d\n", (int)vid_hdr->vol_type); printk(KERN_DEBUG "\tcopy_flag %d\n", (int)vid_hdr->copy_flag); printk(KERN_DEBUG "\tcompat %d\n", (int)vid_hdr->compat); printk(KERN_DEBUG "\tvol_id %d\n", be32_to_cpu(vid_hdr->vol_id)); printk(KERN_DEBUG "\tlnum %d\n", be32_to_cpu(vid_hdr->lnum)); printk(KERN_DEBUG "\tdata_size %d\n", be32_to_cpu(vid_hdr->data_size)); printk(KERN_DEBUG "\tused_ebs %d\n", be32_to_cpu(vid_hdr->used_ebs)); printk(KERN_DEBUG "\tdata_pad %d\n", be32_to_cpu(vid_hdr->data_pad)); printk(KERN_DEBUG "\tsqnum %llu\n", (unsigned long long)be64_to_cpu(vid_hdr->sqnum)); printk(KERN_DEBUG "\thdr_crc %08x\n", be32_to_cpu(vid_hdr->hdr_crc)); printk(KERN_DEBUG "Volume identifier header hexdump:\n"); print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, vid_hdr, UBI_VID_HDR_SIZE, 1); } /** * ubi_dbg_dump_vol_info- dump volume information. * @vol: UBI volume description object */ void ubi_dbg_dump_vol_info(const struct ubi_volume *vol) { printk(KERN_DEBUG "Volume information dump:\n"); printk(KERN_DEBUG "\tvol_id %d\n", vol->vol_id); printk(KERN_DEBUG "\treserved_pebs %d\n", vol->reserved_pebs); printk(KERN_DEBUG "\talignment %d\n", vol->alignment); printk(KERN_DEBUG "\tdata_pad %d\n", vol->data_pad); printk(KERN_DEBUG "\tvol_type %d\n", vol->vol_type); printk(KERN_DEBUG "\tname_len %d\n", vol->name_len); printk(KERN_DEBUG "\tusable_leb_size %d\n", vol->usable_leb_size); printk(KERN_DEBUG "\tused_ebs %d\n", vol->used_ebs); printk(KERN_DEBUG "\tused_bytes %lld\n", vol->used_bytes); printk(KERN_DEBUG "\tlast_eb_bytes %d\n", vol->last_eb_bytes); printk(KERN_DEBUG "\tcorrupted %d\n", vol->corrupted); printk(KERN_DEBUG "\tupd_marker %d\n", vol->upd_marker); if (vol->name_len <= UBI_VOL_NAME_MAX && strnlen(vol->name, vol->name_len + 1) == vol->name_len) { printk(KERN_DEBUG "\tname %s\n", vol->name); } else { printk(KERN_DEBUG "\t1st 5 characters of name: %c%c%c%c%c\n", vol->name[0], vol->name[1], vol->name[2], vol->name[3], vol->name[4]); } } /** * ubi_dbg_dump_vtbl_record - dump a &struct ubi_vtbl_record object. * @r: the object to dump * @idx: volume table index */ void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx) { int name_len = be16_to_cpu(r->name_len); printk(KERN_DEBUG "Volume table record %d dump:\n", idx); printk(KERN_DEBUG "\treserved_pebs %d\n", be32_to_cpu(r->reserved_pebs)); printk(KERN_DEBUG "\talignment %d\n", be32_to_cpu(r->alignment)); printk(KERN_DEBUG "\tdata_pad %d\n", be32_to_cpu(r->data_pad)); printk(KERN_DEBUG "\tvol_type %d\n", (int)r->vol_type); printk(KERN_DEBUG "\tupd_marker %d\n", (int)r->upd_marker); printk(KERN_DEBUG "\tname_len %d\n", name_len); if (r->name[0] == '\0') { printk(KERN_DEBUG "\tname NULL\n"); return; } if (name_len <= UBI_VOL_NAME_MAX && strnlen(&r->name[0], name_len + 1) == name_len) { printk(KERN_DEBUG "\tname %s\n", &r->name[0]); } else { printk(KERN_DEBUG "\t1st 5 characters of name: %c%c%c%c%c\n", r->name[0], r->name[1], r->name[2], r->name[3], r->name[4]); } printk(KERN_DEBUG "\tcrc %#08x\n", be32_to_cpu(r->crc)); } /** * ubi_dbg_dump_sv - dump a &struct ubi_scan_volume object. * @sv: the object to dump */ void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv) { printk(KERN_DEBUG "Volume scanning information dump:\n"); printk(KERN_DEBUG "\tvol_id %d\n", sv->vol_id); printk(KERN_DEBUG "\thighest_lnum %d\n", sv->highest_lnum); printk(KERN_DEBUG "\tleb_count %d\n", sv->leb_count); printk(KERN_DEBUG "\tcompat %d\n", sv->compat); printk(KERN_DEBUG "\tvol_type %d\n", sv->vol_type); printk(KERN_DEBUG "\tused_ebs %d\n", sv->used_ebs); printk(KERN_DEBUG "\tlast_data_size %d\n", sv->last_data_size); printk(KERN_DEBUG "\tdata_pad %d\n", sv->data_pad); } /** * ubi_dbg_dump_seb - dump a &struct ubi_scan_leb object. * @seb: the object to dump * @type: object type: 0 - not corrupted, 1 - corrupted */ void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type) { printk(KERN_DEBUG "eraseblock scanning information dump:\n"); printk(KERN_DEBUG "\tec %d\n", seb->ec); printk(KERN_DEBUG "\tpnum %d\n", seb->pnum); if (type == 0) { printk(KERN_DEBUG "\tlnum %d\n", seb->lnum); printk(KERN_DEBUG "\tscrub %d\n", seb->scrub); printk(KERN_DEBUG "\tsqnum %llu\n", seb->sqnum); } } /** * ubi_dbg_dump_mkvol_req - dump a &struct ubi_mkvol_req object. * @req: the object to dump */ void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req) { char nm[17]; printk(KERN_DEBUG "Volume creation request dump:\n"); printk(KERN_DEBUG "\tvol_id %d\n", req->vol_id); printk(KERN_DEBUG "\talignment %d\n", req->alignment); printk(KERN_DEBUG "\tbytes %lld\n", (long long)req->bytes); printk(KERN_DEBUG "\tvol_type %d\n", req->vol_type); printk(KERN_DEBUG "\tname_len %d\n", req->name_len); memcpy(nm, req->name, 16); nm[16] = 0; printk(KERN_DEBUG "\t1st 16 characters of name: %s\n", nm); } /** * ubi_dbg_dump_flash - dump a region of flash. * @ubi: UBI device description object * @pnum: the physical eraseblock number to dump * @offset: the starting offset within the physical eraseblock to dump * @len: the length of the region to dump */ void ubi_dbg_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len) { int err; size_t read; void *buf; loff_t addr = (loff_t)pnum * ubi->peb_size + offset; buf = vmalloc(len); if (!buf) return; err = ubi->mtd->read(ubi->mtd, addr, len, &read, buf); if (err && err != -EUCLEAN) { ubi_err("error %d while reading %d bytes from PEB %d:%d, " "read %zd bytes", err, len, pnum, offset, read); goto out; } dbg_msg("dumping %d bytes of data from PEB %d, offset %d", len, pnum, offset); print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, buf, len, 1); out: vfree(buf); return; } #endif /* CONFIG_MTD_UBI_DEBUG */