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kernel-ark/drivers/mtd/ubi/debug.c
Artem Bityutskiy 9869cd801c UBI: remove pre-sqnum images support 
Before UBI got into mainline, there was a slight flash format
change - we did not have sequence number support, then added it.

We have carried full support of those ancient images till this
moment. Now the support is removed, well, not fully removed.

Now UBI will support only _clean_ old images, which were cleanly
detached last time (just before kernel upgrade). This is most
likely the case.

But we will not support unclean ancient images. Surprisingly,
this allows us to remove a big chunk of legacy code.

And the same should be true for downgrading: clean images should
downgrade fine, but unclean ones will not.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2008-07-24 13:36:09 +03:00

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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 "\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);
}
#endif /* CONFIG_MTD_UBI_DEBUG */
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