drivers/mtd/ubi/debug.c - arm/linux - Git at Google

 /*
  * 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 <linux/module.h>
 #include <linux/moduleparam.h>

 unsigned int ubi_chk_flags;
 unsigned int ubi_tst_flags;

 module_param_named(debug_chks, ubi_chk_flags, uint, S_IRUGO | S_IWUSR);
 module_param_named(debug_tsts, ubi_chk_flags, uint, S_IRUGO | S_IWUSR);

 MODULE_PARM_DESC(debug_chks, "Debug check flags");
 MODULE_PARM_DESC(debug_tsts, "Debug special test 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 */
	/*
	* 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 <linux/module.h>
	#include <linux/moduleparam.h>

	unsigned int ubi_chk_flags;
	unsigned int ubi_tst_flags;

	module_param_named(debug_chks, ubi_chk_flags, uint, S_IRUGO \| S_IWUSR);
	module_param_named(debug_tsts, ubi_chk_flags, uint, S_IRUGO \| S_IWUSR);

	MODULE_PARM_DESC(debug_chks, "Debug check flags");
	MODULE_PARM_DESC(debug_tsts, "Debug special test 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 */