aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/mtd/ubi/debug.c
blob: 4876977e52cbc90446bb45050ce5e1a2ce18cfab (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
/*
 * 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 */