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linux/drivers/mtd/ubi/debug.c

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/*
* 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"
/**
* 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 */
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