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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/drivers/mtd/ubi/debug.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
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.c | 449 |
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); -} |