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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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867996b15c
Useful for debugging problems, compiled in only if UBI debugging is enabled. This patch also makes the UBI writing function dump the flash if it fails to write. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
232 lines
8.4 KiB
C
232 lines
8.4 KiB
C
/*
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* Copyright (c) International Business Machines Corp., 2006
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Artem Bityutskiy (Битюцкий Артём)
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*/
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/*
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* Here we keep all the UBI debugging stuff which should normally be disabled
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* and compiled-out, but it is extremely helpful when hunting bugs or doing big
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* changes.
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*/
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#ifdef CONFIG_MTD_UBI_DEBUG
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#include "ubi.h"
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/**
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* ubi_dbg_dump_ec_hdr - dump an erase counter header.
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* @ec_hdr: the erase counter header to dump
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*/
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void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr)
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{
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printk(KERN_DEBUG "Erase counter header dump:\n");
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printk(KERN_DEBUG "\tmagic %#08x\n",
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be32_to_cpu(ec_hdr->magic));
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printk(KERN_DEBUG "\tversion %d\n", (int)ec_hdr->version);
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printk(KERN_DEBUG "\tec %llu\n",
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(long long)be64_to_cpu(ec_hdr->ec));
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printk(KERN_DEBUG "\tvid_hdr_offset %d\n",
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be32_to_cpu(ec_hdr->vid_hdr_offset));
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printk(KERN_DEBUG "\tdata_offset %d\n",
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be32_to_cpu(ec_hdr->data_offset));
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printk(KERN_DEBUG "\timage_seq %d\n",
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be32_to_cpu(ec_hdr->image_seq));
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printk(KERN_DEBUG "\thdr_crc %#08x\n",
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be32_to_cpu(ec_hdr->hdr_crc));
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printk(KERN_DEBUG "erase counter header hexdump:\n");
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print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
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ec_hdr, UBI_EC_HDR_SIZE, 1);
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}
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/**
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* ubi_dbg_dump_vid_hdr - dump a volume identifier header.
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* @vid_hdr: the volume identifier header to dump
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*/
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void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr)
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{
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printk(KERN_DEBUG "Volume identifier header dump:\n");
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printk(KERN_DEBUG "\tmagic %08x\n", be32_to_cpu(vid_hdr->magic));
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printk(KERN_DEBUG "\tversion %d\n", (int)vid_hdr->version);
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printk(KERN_DEBUG "\tvol_type %d\n", (int)vid_hdr->vol_type);
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printk(KERN_DEBUG "\tcopy_flag %d\n", (int)vid_hdr->copy_flag);
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printk(KERN_DEBUG "\tcompat %d\n", (int)vid_hdr->compat);
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printk(KERN_DEBUG "\tvol_id %d\n", be32_to_cpu(vid_hdr->vol_id));
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printk(KERN_DEBUG "\tlnum %d\n", be32_to_cpu(vid_hdr->lnum));
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printk(KERN_DEBUG "\tdata_size %d\n", be32_to_cpu(vid_hdr->data_size));
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printk(KERN_DEBUG "\tused_ebs %d\n", be32_to_cpu(vid_hdr->used_ebs));
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printk(KERN_DEBUG "\tdata_pad %d\n", be32_to_cpu(vid_hdr->data_pad));
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printk(KERN_DEBUG "\tsqnum %llu\n",
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(unsigned long long)be64_to_cpu(vid_hdr->sqnum));
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printk(KERN_DEBUG "\thdr_crc %08x\n", be32_to_cpu(vid_hdr->hdr_crc));
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printk(KERN_DEBUG "Volume identifier header hexdump:\n");
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print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
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vid_hdr, UBI_VID_HDR_SIZE, 1);
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}
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/**
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* ubi_dbg_dump_vol_info- dump volume information.
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* @vol: UBI volume description object
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*/
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void ubi_dbg_dump_vol_info(const struct ubi_volume *vol)
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{
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printk(KERN_DEBUG "Volume information dump:\n");
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printk(KERN_DEBUG "\tvol_id %d\n", vol->vol_id);
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printk(KERN_DEBUG "\treserved_pebs %d\n", vol->reserved_pebs);
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printk(KERN_DEBUG "\talignment %d\n", vol->alignment);
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printk(KERN_DEBUG "\tdata_pad %d\n", vol->data_pad);
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printk(KERN_DEBUG "\tvol_type %d\n", vol->vol_type);
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printk(KERN_DEBUG "\tname_len %d\n", vol->name_len);
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printk(KERN_DEBUG "\tusable_leb_size %d\n", vol->usable_leb_size);
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printk(KERN_DEBUG "\tused_ebs %d\n", vol->used_ebs);
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printk(KERN_DEBUG "\tused_bytes %lld\n", vol->used_bytes);
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printk(KERN_DEBUG "\tlast_eb_bytes %d\n", vol->last_eb_bytes);
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printk(KERN_DEBUG "\tcorrupted %d\n", vol->corrupted);
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printk(KERN_DEBUG "\tupd_marker %d\n", vol->upd_marker);
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if (vol->name_len <= UBI_VOL_NAME_MAX &&
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strnlen(vol->name, vol->name_len + 1) == vol->name_len) {
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printk(KERN_DEBUG "\tname %s\n", vol->name);
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} else {
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printk(KERN_DEBUG "\t1st 5 characters of name: %c%c%c%c%c\n",
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vol->name[0], vol->name[1], vol->name[2],
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vol->name[3], vol->name[4]);
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}
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}
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/**
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* ubi_dbg_dump_vtbl_record - dump a &struct ubi_vtbl_record object.
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* @r: the object to dump
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* @idx: volume table index
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*/
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void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx)
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{
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int name_len = be16_to_cpu(r->name_len);
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printk(KERN_DEBUG "Volume table record %d dump:\n", idx);
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printk(KERN_DEBUG "\treserved_pebs %d\n",
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be32_to_cpu(r->reserved_pebs));
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printk(KERN_DEBUG "\talignment %d\n", be32_to_cpu(r->alignment));
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printk(KERN_DEBUG "\tdata_pad %d\n", be32_to_cpu(r->data_pad));
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printk(KERN_DEBUG "\tvol_type %d\n", (int)r->vol_type);
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printk(KERN_DEBUG "\tupd_marker %d\n", (int)r->upd_marker);
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printk(KERN_DEBUG "\tname_len %d\n", name_len);
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if (r->name[0] == '\0') {
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printk(KERN_DEBUG "\tname NULL\n");
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return;
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}
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if (name_len <= UBI_VOL_NAME_MAX &&
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strnlen(&r->name[0], name_len + 1) == name_len) {
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printk(KERN_DEBUG "\tname %s\n", &r->name[0]);
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} else {
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printk(KERN_DEBUG "\t1st 5 characters of name: %c%c%c%c%c\n",
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r->name[0], r->name[1], r->name[2], r->name[3],
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r->name[4]);
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}
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printk(KERN_DEBUG "\tcrc %#08x\n", be32_to_cpu(r->crc));
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}
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/**
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* ubi_dbg_dump_sv - dump a &struct ubi_scan_volume object.
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* @sv: the object to dump
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*/
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void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv)
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{
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printk(KERN_DEBUG "Volume scanning information dump:\n");
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printk(KERN_DEBUG "\tvol_id %d\n", sv->vol_id);
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printk(KERN_DEBUG "\thighest_lnum %d\n", sv->highest_lnum);
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printk(KERN_DEBUG "\tleb_count %d\n", sv->leb_count);
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printk(KERN_DEBUG "\tcompat %d\n", sv->compat);
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printk(KERN_DEBUG "\tvol_type %d\n", sv->vol_type);
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printk(KERN_DEBUG "\tused_ebs %d\n", sv->used_ebs);
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printk(KERN_DEBUG "\tlast_data_size %d\n", sv->last_data_size);
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printk(KERN_DEBUG "\tdata_pad %d\n", sv->data_pad);
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}
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/**
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* ubi_dbg_dump_seb - dump a &struct ubi_scan_leb object.
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* @seb: the object to dump
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* @type: object type: 0 - not corrupted, 1 - corrupted
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*/
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void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type)
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{
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printk(KERN_DEBUG "eraseblock scanning information dump:\n");
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printk(KERN_DEBUG "\tec %d\n", seb->ec);
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printk(KERN_DEBUG "\tpnum %d\n", seb->pnum);
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if (type == 0) {
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printk(KERN_DEBUG "\tlnum %d\n", seb->lnum);
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printk(KERN_DEBUG "\tscrub %d\n", seb->scrub);
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printk(KERN_DEBUG "\tsqnum %llu\n", seb->sqnum);
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}
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}
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/**
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* ubi_dbg_dump_mkvol_req - dump a &struct ubi_mkvol_req object.
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* @req: the object to dump
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*/
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void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req)
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{
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char nm[17];
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printk(KERN_DEBUG "Volume creation request dump:\n");
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printk(KERN_DEBUG "\tvol_id %d\n", req->vol_id);
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printk(KERN_DEBUG "\talignment %d\n", req->alignment);
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printk(KERN_DEBUG "\tbytes %lld\n", (long long)req->bytes);
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printk(KERN_DEBUG "\tvol_type %d\n", req->vol_type);
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printk(KERN_DEBUG "\tname_len %d\n", req->name_len);
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memcpy(nm, req->name, 16);
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nm[16] = 0;
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printk(KERN_DEBUG "\t1st 16 characters of name: %s\n", nm);
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}
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/**
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* ubi_dbg_dump_flash - dump a region of flash.
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* @ubi: UBI device description object
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* @pnum: the physical eraseblock number to dump
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* @offset: the starting offset within the physical eraseblock to dump
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* @len: the length of the region to dump
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*/
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void ubi_dbg_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len)
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{
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int err;
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size_t read;
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void *buf;
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loff_t addr = (loff_t)pnum * ubi->peb_size + offset;
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buf = vmalloc(len);
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if (!buf)
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return;
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err = ubi->mtd->read(ubi->mtd, addr, len, &read, buf);
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if (err && err != -EUCLEAN) {
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ubi_err("error %d while reading %d bytes from PEB %d:%d, "
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"read %zd bytes", err, len, pnum, offset, read);
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goto out;
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}
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dbg_msg("dumping %d bytes of data from PEB %d, offset %d",
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len, pnum, offset);
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print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, buf, len, 1);
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out:
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vfree(buf);
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return;
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}
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#endif /* CONFIG_MTD_UBI_DEBUG */
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