static int __init mtd_readtest_init(void)
{
uint64_t tmp;
int err, i;
printk(KERN_INFO "\n");
printk(KERN_INFO "=================================================\n");
if (dev < 0) {
pr_info("Please specify a valid mtd-device via module parameter\n");
return -EINVAL;
}
pr_info("MTD device: %d\n", dev);
mtd = get_mtd_device(NULL, dev);
if (IS_ERR(mtd)) {
err = PTR_ERR(mtd);
pr_err("error: Cannot get MTD device\n");
return err;
}
if (mtd->writesize == 1) {
pr_info("not NAND flash, assume page size is 512 "
"bytes.\n");
pgsize = 512;
} else
pgsize = mtd->writesize;
tmp = mtd->size;
do_div(tmp, mtd->erasesize);
ebcnt = tmp;
pgcnt = mtd->erasesize / pgsize;
pr_info("MTD device size %llu, eraseblock size %u, "
"page size %u, count of eraseblocks %u, pages per "
"eraseblock %u, OOB size %u\n",
(unsigned long long)mtd->size, mtd->erasesize,
pgsize, ebcnt, pgcnt, mtd->oobsize);
err = -ENOMEM;
iobuf = kmalloc(mtd->erasesize, GFP_KERNEL);
if (!iobuf)
goto out;
iobuf1 = kmalloc(mtd->erasesize, GFP_KERNEL);
if (!iobuf1)
goto out;
bbt = kzalloc(ebcnt, GFP_KERNEL);
if (!bbt)
goto out;
err = mtdtest_scan_for_bad_eraseblocks(mtd, bbt, 0, ebcnt);
if (err)
goto out;
/* Read all eraseblocks 1 page at a time */
pr_info("testing page read\n");
for (i = 0; i < ebcnt; ++i) {
int ret;
if (bbt[i])
continue;
ret = read_eraseblock_by_page(i);
if (ret) {
dump_eraseblock(i);
if (!err)
err = ret;
}
ret = mtdtest_relax();
if (ret) {
err = ret;
goto out;
}
}
if (err)
pr_info("finished with errors\n");
else
pr_info("finished\n");
out:
kfree(iobuf);
kfree(iobuf1);
kfree(bbt);
put_mtd_device(mtd);
if (err)
pr_info("error %d occurred\n", err);
printk(KERN_INFO "=================================================\n");
return err;
}
static int __init mtd_readtest_init(void)
{
uint64_t tmp;
int err, i;
printk(KERN_INFO "\n");
printk(KERN_INFO "=================================================\n");
printk(PRINT_PREF "MTD device: %d\n", dev);
mtd = get_mtd_device(NULL, dev);
if (IS_ERR(mtd)) {
err = PTR_ERR(mtd);
printk(PRINT_PREF "error: Cannot get MTD device\n");
return err;
}
if (mtd->writesize == 1) {
printk(PRINT_PREF "not NAND flash, assume page size is 512 "
"bytes.\n");
pgsize = 512;
} else
pgsize = mtd->writesize;
tmp = mtd->size;
do_div(tmp, mtd->erasesize);
ebcnt = tmp;
pgcnt = mtd->erasesize / mtd->writesize;
printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
"page size %u, count of eraseblocks %u, pages per "
"eraseblock %u, OOB size %u\n",
(unsigned long long)mtd->size, mtd->erasesize,
pgsize, ebcnt, pgcnt, mtd->oobsize);
err = -ENOMEM;
iobuf = kmalloc(mtd->erasesize, GFP_KERNEL);
if (!iobuf) {
printk(PRINT_PREF "error: cannot allocate memory\n");
goto out;
}
iobuf1 = kmalloc(mtd->erasesize, GFP_KERNEL);
if (!iobuf1) {
printk(PRINT_PREF "error: cannot allocate memory\n");
goto out;
}
err = scan_for_bad_eraseblocks();
if (err)
goto out;
/* Read all eraseblocks 1 page at a time */
printk(PRINT_PREF "testing page read\n");
for (i = 0; i < ebcnt; ++i) {
int ret;
if (bbt[i])
continue;
ret = read_eraseblock_by_page(i);
if (ret) {
dump_eraseblock(i);
if (!err)
err = ret;
}
cond_resched();
}
if (err)
printk(PRINT_PREF "finished with errors\n");
else
printk(PRINT_PREF "finished\n");
out:
kfree(iobuf);
kfree(iobuf1);
kfree(bbt);
put_mtd_device(mtd);
if (err)
printk(PRINT_PREF "error %d occurred\n", err);
printk(KERN_INFO "=================================================\n");
return err;
}
int main(int argc, char **argv)
{
int status = EXIT_SUCCESS, i, ret, blk;
process_options(argc, argv);
mtd_desc = libmtd_open();
if (!mtd_desc)
return errmsg("can't initialize libmtd");
if (mtd_get_dev_info(mtd_desc, mtddev, &mtd) < 0)
return errmsg("mtd_get_dev_info failed");
if (mtd.subpage_size == 1) {
puts("not NAND flash, assume page size is 512 bytes.");
pgsize = 512;
} else {
pgsize = mtd.subpage_size;
}
pgcnt = mtd.eb_size / pgsize;
if (count < 0)
count = mtd.eb_cnt;
if (peb >= mtd.eb_cnt)
return errmsg("Physical erase block %d is out of range!\n", peb);
if ((peb + (count - 1)*(skip + 1)) >= mtd.eb_cnt) {
return errmsg("Given block range exceeds block count of %d!\n",
mtd.eb_cnt);
}
iobuf = xmalloc(mtd.eb_size);
iobuf1 = xmalloc(mtd.eb_size);
if ((fd = open(mtddev, O_RDWR)) == -1) {
perror(mtddev);
status = EXIT_FAILURE;
goto out;
}
/* Read all eraseblocks 1 page at a time */
puts("testing page read");
for (i = 0; i < count; ++i) {
blk = peb + i*(skip+1);
if (mtd_is_bad(&mtd, fd, blk)) {
printf("Skipping bad block %d\n", blk);
continue;
}
ret = read_eraseblock_by_page(blk);
if (ret && (flags & FLAG_VERBOSE)) {
dump_eraseblock(blk);
status = EXIT_FAILURE;
}
}
out:
free(iobuf);
free(iobuf1);
return status;
}
