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Diffstat (limited to 'drivers/mtd/tests/mtd_oobtest.c')
-rw-r--r--drivers/mtd/tests/mtd_oobtest.c733
1 files changed, 0 insertions, 733 deletions
diff --git a/drivers/mtd/tests/mtd_oobtest.c b/drivers/mtd/tests/mtd_oobtest.c
deleted file mode 100644
index dec92ae6111..00000000000
--- a/drivers/mtd/tests/mtd_oobtest.c
+++ /dev/null
@@ -1,733 +0,0 @@
-/*
- * Copyright (C) 2006-2008 Nokia Corporation
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * 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; see the file COPYING. If not, write to the Free Software
- * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- * Test OOB read and write on MTD device.
- *
- * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
- */
-
-#include <asm/div64.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/err.h>
-#include <linux/mtd/mtd.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-
-#define PRINT_PREF KERN_INFO "mtd_oobtest: "
-
-static int dev;
-module_param(dev, int, S_IRUGO);
-MODULE_PARM_DESC(dev, "MTD device number to use");
-
-static struct mtd_info *mtd;
-static unsigned char *readbuf;
-static unsigned char *writebuf;
-static unsigned char *bbt;
-
-static int ebcnt;
-static int pgcnt;
-static int errcnt;
-static int use_offset;
-static int use_len;
-static int use_len_max;
-static int vary_offset;
-static unsigned long next = 1;
-
-static inline unsigned int simple_rand(void)
-{
- next = next * 1103515245 + 12345;
- return (unsigned int)((next / 65536) % 32768);
-}
-
-static inline void simple_srand(unsigned long seed)
-{
- next = seed;
-}
-
-static void set_random_data(unsigned char *buf, size_t len)
-{
- size_t i;
-
- for (i = 0; i < len; ++i)
- buf[i] = simple_rand();
-}
-
-static int erase_eraseblock(int ebnum)
-{
- int err;
- struct erase_info ei;
- loff_t addr = ebnum * mtd->erasesize;
-
- memset(&ei, 0, sizeof(struct erase_info));
- ei.mtd = mtd;
- ei.addr = addr;
- ei.len = mtd->erasesize;
-
- err = mtd->erase(mtd, &ei);
- if (err) {
- printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
- return err;
- }
-
- if (ei.state == MTD_ERASE_FAILED) {
- printk(PRINT_PREF "some erase error occurred at EB %d\n",
- ebnum);
- return -EIO;
- }
-
- return 0;
-}
-
-static int erase_whole_device(void)
-{
- int err;
- unsigned int i;
-
- printk(PRINT_PREF "erasing whole device\n");
- for (i = 0; i < ebcnt; ++i) {
- if (bbt[i])
- continue;
- err = erase_eraseblock(i);
- if (err)
- return err;
- cond_resched();
- }
- printk(PRINT_PREF "erased %u eraseblocks\n", i);
- return 0;
-}
-
-static void do_vary_offset(void)
-{
- use_len -= 1;
- if (use_len < 1) {
- use_offset += 1;
- if (use_offset >= use_len_max)
- use_offset = 0;
- use_len = use_len_max - use_offset;
- }
-}
-
-static int write_eraseblock(int ebnum)
-{
- int i;
- struct mtd_oob_ops ops;
- int err = 0;
- loff_t addr = ebnum * mtd->erasesize;
-
- for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
- set_random_data(writebuf, use_len);
- ops.mode = MTD_OOB_AUTO;
- ops.len = 0;
- ops.retlen = 0;
- ops.ooblen = use_len;
- ops.oobretlen = 0;
- ops.ooboffs = use_offset;
- ops.datbuf = NULL;
- ops.oobbuf = writebuf;
- err = mtd->write_oob(mtd, addr, &ops);
- if (err || ops.oobretlen != use_len) {
- printk(PRINT_PREF "error: writeoob failed at %#llx\n",
- (long long)addr);
- printk(PRINT_PREF "error: use_len %d, use_offset %d\n",
- use_len, use_offset);
- errcnt += 1;
- return err ? err : -1;
- }
- if (vary_offset)
- do_vary_offset();
- }
-
- return err;
-}
-
-static int write_whole_device(void)
-{
- int err;
- unsigned int i;
-
- printk(PRINT_PREF "writing OOBs of whole device\n");
- for (i = 0; i < ebcnt; ++i) {
- if (bbt[i])
- continue;
- err = write_eraseblock(i);
- if (err)
- return err;
- if (i % 256 == 0)
- printk(PRINT_PREF "written up to eraseblock %u\n", i);
- cond_resched();
- }
- printk(PRINT_PREF "written %u eraseblocks\n", i);
- return 0;
-}
-
-static int verify_eraseblock(int ebnum)
-{
- int i;
- struct mtd_oob_ops ops;
- int err = 0;
- loff_t addr = ebnum * mtd->erasesize;
-
- for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
- set_random_data(writebuf, use_len);
- ops.mode = MTD_OOB_AUTO;
- ops.len = 0;
- ops.retlen = 0;
- ops.ooblen = use_len;
- ops.oobretlen = 0;
- ops.ooboffs = use_offset;
- ops.datbuf = NULL;
- ops.oobbuf = readbuf;
- err = mtd->read_oob(mtd, addr, &ops);
- if (err || ops.oobretlen != use_len) {
- printk(PRINT_PREF "error: readoob failed at %#llx\n",
- (long long)addr);
- errcnt += 1;
- return err ? err : -1;
- }
- if (memcmp(readbuf, writebuf, use_len)) {
- printk(PRINT_PREF "error: verify failed at %#llx\n",
- (long long)addr);
- errcnt += 1;
- if (errcnt > 1000) {
- printk(PRINT_PREF "error: too many errors\n");
- return -1;
- }
- }
- if (use_offset != 0 || use_len < mtd->ecclayout->oobavail) {
- int k;
-
- ops.mode = MTD_OOB_AUTO;
- ops.len = 0;
- ops.retlen = 0;
- ops.ooblen = mtd->ecclayout->oobavail;
- ops.oobretlen = 0;
- ops.ooboffs = 0;
- ops.datbuf = NULL;
- ops.oobbuf = readbuf;
- err = mtd->read_oob(mtd, addr, &ops);
- if (err || ops.oobretlen != mtd->ecclayout->oobavail) {
- printk(PRINT_PREF "error: readoob failed at "
- "%#llx\n", (long long)addr);
- errcnt += 1;
- return err ? err : -1;
- }
- if (memcmp(readbuf + use_offset, writebuf, use_len)) {
- printk(PRINT_PREF "error: verify failed at "
- "%#llx\n", (long long)addr);
- errcnt += 1;
- if (errcnt > 1000) {
- printk(PRINT_PREF "error: too many "
- "errors\n");
- return -1;
- }
- }
- for (k = 0; k < use_offset; ++k)
- if (readbuf[k] != 0xff) {
- printk(PRINT_PREF "error: verify 0xff "
- "failed at %#llx\n",
- (long long)addr);
- errcnt += 1;
- if (errcnt > 1000) {
- printk(PRINT_PREF "error: too "
- "many errors\n");
- return -1;
- }
- }
- for (k = use_offset + use_len;
- k < mtd->ecclayout->oobavail; ++k)
- if (readbuf[k] != 0xff) {
- printk(PRINT_PREF "error: verify 0xff "
- "failed at %#llx\n",
- (long long)addr);
- errcnt += 1;
- if (errcnt > 1000) {
- printk(PRINT_PREF "error: too "
- "many errors\n");
- return -1;
- }
- }
- }
- if (vary_offset)
- do_vary_offset();
- }
- return err;
-}
-
-static int verify_eraseblock_in_one_go(int ebnum)
-{
- struct mtd_oob_ops ops;
- int err = 0;
- loff_t addr = ebnum * mtd->erasesize;
- size_t len = mtd->ecclayout->oobavail * pgcnt;
-
- set_random_data(writebuf, len);
- ops.mode = MTD_OOB_AUTO;
- ops.len = 0;
- ops.retlen = 0;
- ops.ooblen = len;
- ops.oobretlen = 0;
- ops.ooboffs = 0;
- ops.datbuf = NULL;
- ops.oobbuf = readbuf;
- err = mtd->read_oob(mtd, addr, &ops);
- if (err || ops.oobretlen != len) {
- printk(PRINT_PREF "error: readoob failed at %#llx\n",
- (long long)addr);
- errcnt += 1;
- return err ? err : -1;
- }
- if (memcmp(readbuf, writebuf, len)) {
- printk(PRINT_PREF "error: verify failed at %#llx\n",
- (long long)addr);
- errcnt += 1;
- if (errcnt > 1000) {
- printk(PRINT_PREF "error: too many errors\n");
- return -1;
- }
- }
-
- return err;
-}
-
-static int verify_all_eraseblocks(void)
-{
- int err;
- unsigned int i;
-
- printk(PRINT_PREF "verifying all eraseblocks\n");
- for (i = 0; i < ebcnt; ++i) {
- if (bbt[i])
- continue;
- err = verify_eraseblock(i);
- if (err)
- return err;
- if (i % 256 == 0)
- printk(PRINT_PREF "verified up to eraseblock %u\n", i);
- cond_resched();
- }
- printk(PRINT_PREF "verified %u eraseblocks\n", i);
- return 0;
-}
-
-static int is_block_bad(int ebnum)
-{
- int ret;
- loff_t addr = ebnum * mtd->erasesize;
-
- ret = mtd->block_isbad(mtd, addr);
- if (ret)
- printk(PRINT_PREF "block %d is bad\n", ebnum);
- return ret;
-}
-
-static int scan_for_bad_eraseblocks(void)
-{
- int i, bad = 0;
-
- bbt = kmalloc(ebcnt, GFP_KERNEL);
- if (!bbt) {
- printk(PRINT_PREF "error: cannot allocate memory\n");
- return -ENOMEM;
- }
-
- printk(PRINT_PREF "scanning for bad eraseblocks\n");
- for (i = 0; i < ebcnt; ++i) {
- bbt[i] = is_block_bad(i) ? 1 : 0;
- if (bbt[i])
- bad += 1;
- cond_resched();
- }
- printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
- return 0;
-}
-
-static int __init mtd_oobtest_init(void)
-{
- int err = 0;
- unsigned int i;
- uint64_t tmp;
- struct mtd_oob_ops ops;
- loff_t addr = 0, addr0;
-
- 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->type != MTD_NANDFLASH) {
- printk(PRINT_PREF "this test requires NAND flash\n");
- goto out;
- }
-
- 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,
- mtd->writesize, ebcnt, pgcnt, mtd->oobsize);
-
- err = -ENOMEM;
- readbuf = kmalloc(mtd->erasesize, GFP_KERNEL);
- if (!readbuf) {
- printk(PRINT_PREF "error: cannot allocate memory\n");
- goto out;
- }
- writebuf = kmalloc(mtd->erasesize, GFP_KERNEL);
- if (!writebuf) {
- printk(PRINT_PREF "error: cannot allocate memory\n");
- goto out;
- }
-
- err = scan_for_bad_eraseblocks();
- if (err)
- goto out;
-
- use_offset = 0;
- use_len = mtd->ecclayout->oobavail;
- use_len_max = mtd->ecclayout->oobavail;
- vary_offset = 0;
-
- /* First test: write all OOB, read it back and verify */
- printk(PRINT_PREF "test 1 of 5\n");
-
- err = erase_whole_device();
- if (err)
- goto out;
-
- simple_srand(1);
- err = write_whole_device();
- if (err)
- goto out;
-
- simple_srand(1);
- err = verify_all_eraseblocks();
- if (err)
- goto out;
-
- /*
- * Second test: write all OOB, a block at a time, read it back and
- * verify.
- */
- printk(PRINT_PREF "test 2 of 5\n");
-
- err = erase_whole_device();
- if (err)
- goto out;
-
- simple_srand(3);
- err = write_whole_device();
- if (err)
- goto out;
-
- /* Check all eraseblocks */
- simple_srand(3);
- printk(PRINT_PREF "verifying all eraseblocks\n");
- for (i = 0; i < ebcnt; ++i) {
- if (bbt[i])
- continue;
- err = verify_eraseblock_in_one_go(i);
- if (err)
- goto out;
- if (i % 256 == 0)
- printk(PRINT_PREF "verified up to eraseblock %u\n", i);
- cond_resched();
- }
- printk(PRINT_PREF "verified %u eraseblocks\n", i);
-
- /*
- * Third test: write OOB at varying offsets and lengths, read it back
- * and verify.
- */
- printk(PRINT_PREF "test 3 of 5\n");
-
- err = erase_whole_device();
- if (err)
- goto out;
-
- /* Write all eraseblocks */
- use_offset = 0;
- use_len = mtd->ecclayout->oobavail;
- use_len_max = mtd->ecclayout->oobavail;
- vary_offset = 1;
- simple_srand(5);
-
- err = write_whole_device();
- if (err)
- goto out;
-
- /* Check all eraseblocks */
- use_offset = 0;
- use_len = mtd->ecclayout->oobavail;
- use_len_max = mtd->ecclayout->oobavail;
- vary_offset = 1;
- simple_srand(5);
- err = verify_all_eraseblocks();
- if (err)
- goto out;
-
- use_offset = 0;
- use_len = mtd->ecclayout->oobavail;
- use_len_max = mtd->ecclayout->oobavail;
- vary_offset = 0;
-
- /* Fourth test: try to write off end of device */
- printk(PRINT_PREF "test 4 of 5\n");
-
- err = erase_whole_device();
- if (err)
- goto out;
-
- addr0 = 0;
- for (i = 0; i < ebcnt && bbt[i]; ++i)
- addr0 += mtd->erasesize;
-
- /* Attempt to write off end of OOB */
- ops.mode = MTD_OOB_AUTO;
- ops.len = 0;
- ops.retlen = 0;
- ops.ooblen = 1;
- ops.oobretlen = 0;
- ops.ooboffs = mtd->ecclayout->oobavail;
- ops.datbuf = NULL;
- ops.oobbuf = writebuf;
- printk(PRINT_PREF "attempting to start write past end of OOB\n");
- printk(PRINT_PREF "an error is expected...\n");
- err = mtd->write_oob(mtd, addr0, &ops);
- if (err) {
- printk(PRINT_PREF "error occurred as expected\n");
- err = 0;
- } else {
- printk(PRINT_PREF "error: can write past end of OOB\n");
- errcnt += 1;
- }
-
- /* Attempt to read off end of OOB */
- ops.mode = MTD_OOB_AUTO;
- ops.len = 0;
- ops.retlen = 0;
- ops.ooblen = 1;
- ops.oobretlen = 0;
- ops.ooboffs = mtd->ecclayout->oobavail;
- ops.datbuf = NULL;
- ops.oobbuf = readbuf;
- printk(PRINT_PREF "attempting to start read past end of OOB\n");
- printk(PRINT_PREF "an error is expected...\n");
- err = mtd->read_oob(mtd, addr0, &ops);
- if (err) {
- printk(PRINT_PREF "error occurred as expected\n");
- err = 0;
- } else {
- printk(PRINT_PREF "error: can read past end of OOB\n");
- errcnt += 1;
- }
-
- if (bbt[ebcnt - 1])
- printk(PRINT_PREF "skipping end of device tests because last "
- "block is bad\n");
- else {
- /* Attempt to write off end of device */
- ops.mode = MTD_OOB_AUTO;
- ops.len = 0;
- ops.retlen = 0;
- ops.ooblen = mtd->ecclayout->oobavail + 1;
- ops.oobretlen = 0;
- ops.ooboffs = 0;
- ops.datbuf = NULL;
- ops.oobbuf = writebuf;
- printk(PRINT_PREF "attempting to write past end of device\n");
- printk(PRINT_PREF "an error is expected...\n");
- err = mtd->write_oob(mtd, mtd->size - mtd->writesize, &ops);
- if (err) {
- printk(PRINT_PREF "error occurred as expected\n");
- err = 0;
- } else {
- printk(PRINT_PREF "error: wrote past end of device\n");
- errcnt += 1;
- }
-
- /* Attempt to read off end of device */
- ops.mode = MTD_OOB_AUTO;
- ops.len = 0;
- ops.retlen = 0;
- ops.ooblen = mtd->ecclayout->oobavail + 1;
- ops.oobretlen = 0;
- ops.ooboffs = 0;
- ops.datbuf = NULL;
- ops.oobbuf = readbuf;
- printk(PRINT_PREF "attempting to read past end of device\n");
- printk(PRINT_PREF "an error is expected...\n");
- err = mtd->read_oob(mtd, mtd->size - mtd->writesize, &ops);
- if (err) {
- printk(PRINT_PREF "error occurred as expected\n");
- err = 0;
- } else {
- printk(PRINT_PREF "error: read past end of device\n");
- errcnt += 1;
- }
-
- err = erase_eraseblock(ebcnt - 1);
- if (err)
- goto out;
-
- /* Attempt to write off end of device */
- ops.mode = MTD_OOB_AUTO;
- ops.len = 0;
- ops.retlen = 0;
- ops.ooblen = mtd->ecclayout->oobavail;
- ops.oobretlen = 0;
- ops.ooboffs = 1;
- ops.datbuf = NULL;
- ops.oobbuf = writebuf;
- printk(PRINT_PREF "attempting to write past end of device\n");
- printk(PRINT_PREF "an error is expected...\n");
- err = mtd->write_oob(mtd, mtd->size - mtd->writesize, &ops);
- if (err) {
- printk(PRINT_PREF "error occurred as expected\n");
- err = 0;
- } else {
- printk(PRINT_PREF "error: wrote past end of device\n");
- errcnt += 1;
- }
-
- /* Attempt to read off end of device */
- ops.mode = MTD_OOB_AUTO;
- ops.len = 0;
- ops.retlen = 0;
- ops.ooblen = mtd->ecclayout->oobavail;
- ops.oobretlen = 0;
- ops.ooboffs = 1;
- ops.datbuf = NULL;
- ops.oobbuf = readbuf;
- printk(PRINT_PREF "attempting to read past end of device\n");
- printk(PRINT_PREF "an error is expected...\n");
- err = mtd->read_oob(mtd, mtd->size - mtd->writesize, &ops);
- if (err) {
- printk(PRINT_PREF "error occurred as expected\n");
- err = 0;
- } else {
- printk(PRINT_PREF "error: read past end of device\n");
- errcnt += 1;
- }
- }
-
- /* Fifth test: write / read across block boundaries */
- printk(PRINT_PREF "test 5 of 5\n");
-
- /* Erase all eraseblocks */
- err = erase_whole_device();
- if (err)
- goto out;
-
- /* Write all eraseblocks */
- simple_srand(11);
- printk(PRINT_PREF "writing OOBs of whole device\n");
- for (i = 0; i < ebcnt - 1; ++i) {
- int cnt = 2;
- int pg;
- size_t sz = mtd->ecclayout->oobavail;
- if (bbt[i] || bbt[i + 1])
- continue;
- addr = (i + 1) * mtd->erasesize - mtd->writesize;
- for (pg = 0; pg < cnt; ++pg) {
- set_random_data(writebuf, sz);
- ops.mode = MTD_OOB_AUTO;
- ops.len = 0;
- ops.retlen = 0;
- ops.ooblen = sz;
- ops.oobretlen = 0;
- ops.ooboffs = 0;
- ops.datbuf = NULL;
- ops.oobbuf = writebuf;
- err = mtd->write_oob(mtd, addr, &ops);
- if (err)
- goto out;
- if (i % 256 == 0)
- printk(PRINT_PREF "written up to eraseblock "
- "%u\n", i);
- cond_resched();
- addr += mtd->writesize;
- }
- }
- printk(PRINT_PREF "written %u eraseblocks\n", i);
-
- /* Check all eraseblocks */
- simple_srand(11);
- printk(PRINT_PREF "verifying all eraseblocks\n");
- for (i = 0; i < ebcnt - 1; ++i) {
- if (bbt[i] || bbt[i + 1])
- continue;
- set_random_data(writebuf, mtd->ecclayout->oobavail * 2);
- addr = (i + 1) * mtd->erasesize - mtd->writesize;
- ops.mode = MTD_OOB_AUTO;
- ops.len = 0;
- ops.retlen = 0;
- ops.ooblen = mtd->ecclayout->oobavail * 2;
- ops.oobretlen = 0;
- ops.ooboffs = 0;
- ops.datbuf = NULL;
- ops.oobbuf = readbuf;
- err = mtd->read_oob(mtd, addr, &ops);
- if (err)
- goto out;
- if (memcmp(readbuf, writebuf, mtd->ecclayout->oobavail * 2)) {
- printk(PRINT_PREF "error: verify failed at %#llx\n",
- (long long)addr);
- errcnt += 1;
- if (errcnt > 1000) {
- printk(PRINT_PREF "error: too many errors\n");
- goto out;
- }
- }
- if (i % 256 == 0)
- printk(PRINT_PREF "verified up to eraseblock %u\n", i);
- cond_resched();
- }
- printk(PRINT_PREF "verified %u eraseblocks\n", i);
-
- printk(PRINT_PREF "finished with %d errors\n", errcnt);
-out:
- kfree(bbt);
- kfree(writebuf);
- kfree(readbuf);
- put_mtd_device(mtd);
- if (err)
- printk(PRINT_PREF "error %d occurred\n", err);
- printk(KERN_INFO "=================================================\n");
- return err;
-}
-module_init(mtd_oobtest_init);
-
-static void __exit mtd_oobtest_exit(void)
-{
- return;
-}
-module_exit(mtd_oobtest_exit);
-
-MODULE_DESCRIPTION("Out-of-band test module");
-MODULE_AUTHOR("Adrian Hunter");
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 20:22:01 +0000