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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/drivers/mtd/ubi/debug.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/drivers/mtd/ubi/debug.c')
-rw-r--r--ANDROID_3.4.5/drivers/mtd/ubi/debug.c449
1 files changed, 0 insertions, 449 deletions
diff --git a/ANDROID_3.4.5/drivers/mtd/ubi/debug.c b/ANDROID_3.4.5/drivers/mtd/ubi/debug.c
deleted file mode 100644
index 63cb1d72..00000000
--- a/ANDROID_3.4.5/drivers/mtd/ubi/debug.c
+++ /dev/null
@@ -1,449 +0,0 @@
-/*
- * 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)
- */
-
-#include "ubi.h"
-#include <linux/debugfs.h>
-#include <linux/uaccess.h>
-#include <linux/module.h>
-
-
-/**
- * ubi_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_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 = 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;
- }
-
- ubi_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;
-}
-
-/**
- * ubi_dump_ec_hdr - dump an erase counter header.
- * @ec_hdr: the erase counter header to dump
- */
-void ubi_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr)
-{
- pr_err("Erase counter header dump:\n");
- pr_err("\tmagic %#08x\n", be32_to_cpu(ec_hdr->magic));
- pr_err("\tversion %d\n", (int)ec_hdr->version);
- pr_err("\tec %llu\n", (long long)be64_to_cpu(ec_hdr->ec));
- pr_err("\tvid_hdr_offset %d\n", be32_to_cpu(ec_hdr->vid_hdr_offset));
- pr_err("\tdata_offset %d\n", be32_to_cpu(ec_hdr->data_offset));
- pr_err("\timage_seq %d\n", be32_to_cpu(ec_hdr->image_seq));
- pr_err("\thdr_crc %#08x\n", be32_to_cpu(ec_hdr->hdr_crc));
- pr_err("erase counter header hexdump:\n");
- print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
- ec_hdr, UBI_EC_HDR_SIZE, 1);
-}
-
-/**
- * ubi_dump_vid_hdr - dump a volume identifier header.
- * @vid_hdr: the volume identifier header to dump
- */
-void ubi_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr)
-{
- pr_err("Volume identifier header dump:\n");
- pr_err("\tmagic %08x\n", be32_to_cpu(vid_hdr->magic));
- pr_err("\tversion %d\n", (int)vid_hdr->version);
- pr_err("\tvol_type %d\n", (int)vid_hdr->vol_type);
- pr_err("\tcopy_flag %d\n", (int)vid_hdr->copy_flag);
- pr_err("\tcompat %d\n", (int)vid_hdr->compat);
- pr_err("\tvol_id %d\n", be32_to_cpu(vid_hdr->vol_id));
- pr_err("\tlnum %d\n", be32_to_cpu(vid_hdr->lnum));
- pr_err("\tdata_size %d\n", be32_to_cpu(vid_hdr->data_size));
- pr_err("\tused_ebs %d\n", be32_to_cpu(vid_hdr->used_ebs));
- pr_err("\tdata_pad %d\n", be32_to_cpu(vid_hdr->data_pad));
- pr_err("\tsqnum %llu\n",
- (unsigned long long)be64_to_cpu(vid_hdr->sqnum));
- pr_err("\thdr_crc %08x\n", be32_to_cpu(vid_hdr->hdr_crc));
- pr_err("Volume identifier header hexdump:\n");
- print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
- vid_hdr, UBI_VID_HDR_SIZE, 1);
-}
-
-/**
- * ubi_dump_vol_info - dump volume information.
- * @vol: UBI volume description object
- */
-void ubi_dump_vol_info(const struct ubi_volume *vol)
-{
- pr_err("Volume information dump:\n");
- pr_err("\tvol_id %d\n", vol->vol_id);
- pr_err("\treserved_pebs %d\n", vol->reserved_pebs);
- pr_err("\talignment %d\n", vol->alignment);
- pr_err("\tdata_pad %d\n", vol->data_pad);
- pr_err("\tvol_type %d\n", vol->vol_type);
- pr_err("\tname_len %d\n", vol->name_len);
- pr_err("\tusable_leb_size %d\n", vol->usable_leb_size);
- pr_err("\tused_ebs %d\n", vol->used_ebs);
- pr_err("\tused_bytes %lld\n", vol->used_bytes);
- pr_err("\tlast_eb_bytes %d\n", vol->last_eb_bytes);
- pr_err("\tcorrupted %d\n", vol->corrupted);
- pr_err("\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) {
- pr_err("\tname %s\n", vol->name);
- } else {
- pr_err("\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_dump_vtbl_record - dump a &struct ubi_vtbl_record object.
- * @r: the object to dump
- * @idx: volume table index
- */
-void ubi_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx)
-{
- int name_len = be16_to_cpu(r->name_len);
-
- pr_err("Volume table record %d dump:\n", idx);
- pr_err("\treserved_pebs %d\n", be32_to_cpu(r->reserved_pebs));
- pr_err("\talignment %d\n", be32_to_cpu(r->alignment));
- pr_err("\tdata_pad %d\n", be32_to_cpu(r->data_pad));
- pr_err("\tvol_type %d\n", (int)r->vol_type);
- pr_err("\tupd_marker %d\n", (int)r->upd_marker);
- pr_err("\tname_len %d\n", name_len);
-
- if (r->name[0] == '\0') {
- pr_err("\tname NULL\n");
- return;
- }
-
- if (name_len <= UBI_VOL_NAME_MAX &&
- strnlen(&r->name[0], name_len + 1) == name_len) {
- pr_err("\tname %s\n", &r->name[0]);
- } else {
- pr_err("\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]);
- }
- pr_err("\tcrc %#08x\n", be32_to_cpu(r->crc));
-}
-
-/**
- * ubi_dump_av - dump a &struct ubi_ainf_volume object.
- * @av: the object to dump
- */
-void ubi_dump_av(const struct ubi_ainf_volume *av)
-{
- pr_err("Volume attaching information dump:\n");
- pr_err("\tvol_id %d\n", av->vol_id);
- pr_err("\thighest_lnum %d\n", av->highest_lnum);
- pr_err("\tleb_count %d\n", av->leb_count);
- pr_err("\tcompat %d\n", av->compat);
- pr_err("\tvol_type %d\n", av->vol_type);
- pr_err("\tused_ebs %d\n", av->used_ebs);
- pr_err("\tlast_data_size %d\n", av->last_data_size);
- pr_err("\tdata_pad %d\n", av->data_pad);
-}
-
-/**
- * ubi_dump_aeb - dump a &struct ubi_ainf_peb object.
- * @aeb: the object to dump
- * @type: object type: 0 - not corrupted, 1 - corrupted
- */
-void ubi_dump_aeb(const struct ubi_ainf_peb *aeb, int type)
-{
- pr_err("eraseblock attaching information dump:\n");
- pr_err("\tec %d\n", aeb->ec);
- pr_err("\tpnum %d\n", aeb->pnum);
- if (type == 0) {
- pr_err("\tlnum %d\n", aeb->lnum);
- pr_err("\tscrub %d\n", aeb->scrub);
- pr_err("\tsqnum %llu\n", aeb->sqnum);
- }
-}
-
-/**
- * ubi_dump_mkvol_req - dump a &struct ubi_mkvol_req object.
- * @req: the object to dump
- */
-void ubi_dump_mkvol_req(const struct ubi_mkvol_req *req)
-{
- char nm[17];
-
- pr_err("Volume creation request dump:\n");
- pr_err("\tvol_id %d\n", req->vol_id);
- pr_err("\talignment %d\n", req->alignment);
- pr_err("\tbytes %lld\n", (long long)req->bytes);
- pr_err("\tvol_type %d\n", req->vol_type);
- pr_err("\tname_len %d\n", req->name_len);
-
- memcpy(nm, req->name, 16);
- nm[16] = 0;
- pr_err("\t1st 16 characters of name: %s\n", nm);
-}
-
-/*
- * Root directory for UBI stuff in debugfs. Contains sub-directories which
- * contain the stuff specific to particular UBI devices.
- */
-static struct dentry *dfs_rootdir;
-
-/**
- * ubi_debugfs_init - create UBI debugfs directory.
- *
- * Create UBI debugfs directory. Returns zero in case of success and a negative
- * error code in case of failure.
- */
-int ubi_debugfs_init(void)
-{
- if (!IS_ENABLED(CONFIG_DEBUG_FS))
- return 0;
-
- dfs_rootdir = debugfs_create_dir("ubi", NULL);
- if (IS_ERR_OR_NULL(dfs_rootdir)) {
- int err = dfs_rootdir ? -ENODEV : PTR_ERR(dfs_rootdir);
-
- ubi_err("cannot create \"ubi\" debugfs directory, error %d\n",
- err);
- return err;
- }
-
- return 0;
-}
-
-/**
- * ubi_debugfs_exit - remove UBI debugfs directory.
- */
-void ubi_debugfs_exit(void)
-{
- if (IS_ENABLED(CONFIG_DEBUG_FS))
- debugfs_remove(dfs_rootdir);
-}
-
-/* Read an UBI debugfs file */
-static ssize_t dfs_file_read(struct file *file, char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- unsigned long ubi_num = (unsigned long)file->private_data;
- struct dentry *dent = file->f_path.dentry;
- struct ubi_device *ubi;
- struct ubi_debug_info *d;
- char buf[3];
- int val;
-
- ubi = ubi_get_device(ubi_num);
- if (!ubi)
- return -ENODEV;
- d = &ubi->dbg;
-
- if (dent == d->dfs_chk_gen)
- val = d->chk_gen;
- else if (dent == d->dfs_chk_io)
- val = d->chk_io;
- else if (dent == d->dfs_disable_bgt)
- val = d->disable_bgt;
- else if (dent == d->dfs_emulate_bitflips)
- val = d->emulate_bitflips;
- else if (dent == d->dfs_emulate_io_failures)
- val = d->emulate_io_failures;
- else {
- count = -EINVAL;
- goto out;
- }
-
- if (val)
- buf[0] = '1';
- else
- buf[0] = '0';
- buf[1] = '\n';
- buf[2] = 0x00;
-
- count = simple_read_from_buffer(user_buf, count, ppos, buf, 2);
-
-out:
- ubi_put_device(ubi);
- return count;
-}
-
-/* Write an UBI debugfs file */
-static ssize_t dfs_file_write(struct file *file, const char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- unsigned long ubi_num = (unsigned long)file->private_data;
- struct dentry *dent = file->f_path.dentry;
- struct ubi_device *ubi;
- struct ubi_debug_info *d;
- size_t buf_size;
- char buf[8];
- int val;
-
- ubi = ubi_get_device(ubi_num);
- if (!ubi)
- return -ENODEV;
- d = &ubi->dbg;
-
- buf_size = min_t(size_t, count, (sizeof(buf) - 1));
- if (copy_from_user(buf, user_buf, buf_size)) {
- count = -EFAULT;
- goto out;
- }
-
- if (buf[0] == '1')
- val = 1;
- else if (buf[0] == '0')
- val = 0;
- else {
- count = -EINVAL;
- goto out;
- }
-
- if (dent == d->dfs_chk_gen)
- d->chk_gen = val;
- else if (dent == d->dfs_chk_io)
- d->chk_io = val;
- else if (dent == d->dfs_disable_bgt)
- d->disable_bgt = val;
- else if (dent == d->dfs_emulate_bitflips)
- d->emulate_bitflips = val;
- else if (dent == d->dfs_emulate_io_failures)
- d->emulate_io_failures = val;
- else
- count = -EINVAL;
-
-out:
- ubi_put_device(ubi);
- return count;
-}
-
-/* File operations for all UBI debugfs files */
-static const struct file_operations dfs_fops = {
- .read = dfs_file_read,
- .write = dfs_file_write,
- .open = simple_open,
- .llseek = no_llseek,
- .owner = THIS_MODULE,
-};
-
-/**
- * ubi_debugfs_init_dev - initialize debugfs for an UBI device.
- * @ubi: UBI device description object
- *
- * This function creates all debugfs files for UBI device @ubi. Returns zero in
- * case of success and a negative error code in case of failure.
- */
-int ubi_debugfs_init_dev(struct ubi_device *ubi)
-{
- int err, n;
- unsigned long ubi_num = ubi->ubi_num;
- const char *fname;
- struct dentry *dent;
- struct ubi_debug_info *d = &ubi->dbg;
-
- if (!IS_ENABLED(CONFIG_DEBUG_FS))
- return 0;
-
- n = snprintf(d->dfs_dir_name, UBI_DFS_DIR_LEN + 1, UBI_DFS_DIR_NAME,
- ubi->ubi_num);
- if (n == UBI_DFS_DIR_LEN) {
- /* The array size is too small */
- fname = UBI_DFS_DIR_NAME;
- dent = ERR_PTR(-EINVAL);
- goto out;
- }
-
- fname = d->dfs_dir_name;
- dent = debugfs_create_dir(fname, dfs_rootdir);
- if (IS_ERR_OR_NULL(dent))
- goto out;
- d->dfs_dir = dent;
-
- fname = "chk_gen";
- dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
- &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_chk_gen = dent;
-
- fname = "chk_io";
- dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
- &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_chk_io = dent;
-
- fname = "tst_disable_bgt";
- dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
- &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_disable_bgt = dent;
-
- fname = "tst_emulate_bitflips";
- dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
- &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_emulate_bitflips = dent;
-
- fname = "tst_emulate_io_failures";
- dent = debugfs_create_file(fname, S_IWUSR, d->dfs_dir, (void *)ubi_num,
- &dfs_fops);
- if (IS_ERR_OR_NULL(dent))
- goto out_remove;
- d->dfs_emulate_io_failures = dent;
-
- return 0;
-
-out_remove:
- debugfs_remove_recursive(d->dfs_dir);
-out:
- err = dent ? PTR_ERR(dent) : -ENODEV;
- ubi_err("cannot create \"%s\" debugfs file or directory, error %d\n",
- fname, err);
- return err;
-}
-
-/**
- * dbg_debug_exit_dev - free all debugfs files corresponding to device @ubi
- * @ubi: UBI device description object
- */
-void ubi_debugfs_exit_dev(struct ubi_device *ubi)
-{
- if (IS_ENABLED(CONFIG_DEBUG_FS))
- debugfs_remove_recursive(ubi->dbg.dfs_dir);
-}