summaryrefslogtreecommitdiff
path: root/drivers/mtd/tests/mtd_pagetest.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mtd/tests/mtd_pagetest.c')
-rw-r--r--drivers/mtd/tests/mtd_pagetest.c615
1 files changed, 0 insertions, 615 deletions
diff --git a/drivers/mtd/tests/mtd_pagetest.c b/drivers/mtd/tests/mtd_pagetest.c
deleted file mode 100644
index 0c1140b6c286..000000000000
--- a/drivers/mtd/tests/mtd_pagetest.c
+++ /dev/null
@@ -1,615 +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 page read and write on MTD device.
- *
- * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#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>
-#include <linux/random.h>
-
-static int dev = -EINVAL;
-module_param(dev, int, S_IRUGO);
-MODULE_PARM_DESC(dev, "MTD device number to use");
-
-static struct mtd_info *mtd;
-static unsigned char *twopages;
-static unsigned char *writebuf;
-static unsigned char *boundary;
-static unsigned char *bbt;
-
-static int pgsize;
-static int bufsize;
-static int ebcnt;
-static int pgcnt;
-static int errcnt;
-static struct rnd_state rnd_state;
-
-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) {
- pr_err("error %d while erasing EB %d\n", err, ebnum);
- return err;
- }
-
- if (ei.state == MTD_ERASE_FAILED) {
- pr_err("some erase error occurred at EB %d\n",
- ebnum);
- return -EIO;
- }
-
- return 0;
-}
-
-static int write_eraseblock(int ebnum)
-{
- int err = 0;
- size_t written;
- loff_t addr = ebnum * mtd->erasesize;
-
- prandom_bytes_state(&rnd_state, writebuf, mtd->erasesize);
- cond_resched();
- err = mtd_write(mtd, addr, mtd->erasesize, &written, writebuf);
- if (err || written != mtd->erasesize)
- pr_err("error: write failed at %#llx\n",
- (long long)addr);
-
- return err;
-}
-
-static int verify_eraseblock(int ebnum)
-{
- uint32_t j;
- size_t read;
- int err = 0, i;
- loff_t addr0, addrn;
- loff_t addr = ebnum * mtd->erasesize;
-
- addr0 = 0;
- for (i = 0; i < ebcnt && bbt[i]; ++i)
- addr0 += mtd->erasesize;
-
- addrn = mtd->size;
- for (i = 0; i < ebcnt && bbt[ebcnt - i - 1]; ++i)
- addrn -= mtd->erasesize;
-
- prandom_bytes_state(&rnd_state, writebuf, mtd->erasesize);
- for (j = 0; j < pgcnt - 1; ++j, addr += pgsize) {
- /* Do a read to set the internal dataRAMs to different data */
- err = mtd_read(mtd, addr0, bufsize, &read, twopages);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != bufsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)addr0);
- return err;
- }
- err = mtd_read(mtd, addrn - bufsize, bufsize, &read, twopages);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != bufsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)(addrn - bufsize));
- return err;
- }
- memset(twopages, 0, bufsize);
- err = mtd_read(mtd, addr, bufsize, &read, twopages);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != bufsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)addr);
- break;
- }
- if (memcmp(twopages, writebuf + (j * pgsize), bufsize)) {
- pr_err("error: verify failed at %#llx\n",
- (long long)addr);
- errcnt += 1;
- }
- }
- /* Check boundary between eraseblocks */
- if (addr <= addrn - pgsize - pgsize && !bbt[ebnum + 1]) {
- struct rnd_state old_state = rnd_state;
-
- /* Do a read to set the internal dataRAMs to different data */
- err = mtd_read(mtd, addr0, bufsize, &read, twopages);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != bufsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)addr0);
- return err;
- }
- err = mtd_read(mtd, addrn - bufsize, bufsize, &read, twopages);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != bufsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)(addrn - bufsize));
- return err;
- }
- memset(twopages, 0, bufsize);
- err = mtd_read(mtd, addr, bufsize, &read, twopages);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != bufsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)addr);
- return err;
- }
- memcpy(boundary, writebuf + mtd->erasesize - pgsize, pgsize);
- prandom_bytes_state(&rnd_state, boundary + pgsize, pgsize);
- if (memcmp(twopages, boundary, bufsize)) {
- pr_err("error: verify failed at %#llx\n",
- (long long)addr);
- errcnt += 1;
- }
- rnd_state = old_state;
- }
- return err;
-}
-
-static int crosstest(void)
-{
- size_t read;
- int err = 0, i;
- loff_t addr, addr0, addrn;
- unsigned char *pp1, *pp2, *pp3, *pp4;
-
- pr_info("crosstest\n");
- pp1 = kmalloc(pgsize * 4, GFP_KERNEL);
- if (!pp1) {
- pr_err("error: cannot allocate memory\n");
- return -ENOMEM;
- }
- pp2 = pp1 + pgsize;
- pp3 = pp2 + pgsize;
- pp4 = pp3 + pgsize;
- memset(pp1, 0, pgsize * 4);
-
- addr0 = 0;
- for (i = 0; i < ebcnt && bbt[i]; ++i)
- addr0 += mtd->erasesize;
-
- addrn = mtd->size;
- for (i = 0; i < ebcnt && bbt[ebcnt - i - 1]; ++i)
- addrn -= mtd->erasesize;
-
- /* Read 2nd-to-last page to pp1 */
- addr = addrn - pgsize - pgsize;
- err = mtd_read(mtd, addr, pgsize, &read, pp1);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != pgsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)addr);
- kfree(pp1);
- return err;
- }
-
- /* Read 3rd-to-last page to pp1 */
- addr = addrn - pgsize - pgsize - pgsize;
- err = mtd_read(mtd, addr, pgsize, &read, pp1);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != pgsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)addr);
- kfree(pp1);
- return err;
- }
-
- /* Read first page to pp2 */
- addr = addr0;
- pr_info("reading page at %#llx\n", (long long)addr);
- err = mtd_read(mtd, addr, pgsize, &read, pp2);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != pgsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)addr);
- kfree(pp1);
- return err;
- }
-
- /* Read last page to pp3 */
- addr = addrn - pgsize;
- pr_info("reading page at %#llx\n", (long long)addr);
- err = mtd_read(mtd, addr, pgsize, &read, pp3);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != pgsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)addr);
- kfree(pp1);
- return err;
- }
-
- /* Read first page again to pp4 */
- addr = addr0;
- pr_info("reading page at %#llx\n", (long long)addr);
- err = mtd_read(mtd, addr, pgsize, &read, pp4);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != pgsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)addr);
- kfree(pp1);
- return err;
- }
-
- /* pp2 and pp4 should be the same */
- pr_info("verifying pages read at %#llx match\n",
- (long long)addr0);
- if (memcmp(pp2, pp4, pgsize)) {
- pr_err("verify failed!\n");
- errcnt += 1;
- } else if (!err)
- pr_info("crosstest ok\n");
- kfree(pp1);
- return err;
-}
-
-static int erasecrosstest(void)
-{
- size_t read, written;
- int err = 0, i, ebnum, ebnum2;
- loff_t addr0;
- char *readbuf = twopages;
-
- pr_info("erasecrosstest\n");
-
- ebnum = 0;
- addr0 = 0;
- for (i = 0; i < ebcnt && bbt[i]; ++i) {
- addr0 += mtd->erasesize;
- ebnum += 1;
- }
-
- ebnum2 = ebcnt - 1;
- while (ebnum2 && bbt[ebnum2])
- ebnum2 -= 1;
-
- pr_info("erasing block %d\n", ebnum);
- err = erase_eraseblock(ebnum);
- if (err)
- return err;
-
- pr_info("writing 1st page of block %d\n", ebnum);
- prandom_bytes_state(&rnd_state, writebuf, pgsize);
- strcpy(writebuf, "There is no data like this!");
- err = mtd_write(mtd, addr0, pgsize, &written, writebuf);
- if (err || written != pgsize) {
- pr_info("error: write failed at %#llx\n",
- (long long)addr0);
- return err ? err : -1;
- }
-
- pr_info("reading 1st page of block %d\n", ebnum);
- memset(readbuf, 0, pgsize);
- err = mtd_read(mtd, addr0, pgsize, &read, readbuf);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != pgsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)addr0);
- return err ? err : -1;
- }
-
- pr_info("verifying 1st page of block %d\n", ebnum);
- if (memcmp(writebuf, readbuf, pgsize)) {
- pr_err("verify failed!\n");
- errcnt += 1;
- return -1;
- }
-
- pr_info("erasing block %d\n", ebnum);
- err = erase_eraseblock(ebnum);
- if (err)
- return err;
-
- pr_info("writing 1st page of block %d\n", ebnum);
- prandom_bytes_state(&rnd_state, writebuf, pgsize);
- strcpy(writebuf, "There is no data like this!");
- err = mtd_write(mtd, addr0, pgsize, &written, writebuf);
- if (err || written != pgsize) {
- pr_err("error: write failed at %#llx\n",
- (long long)addr0);
- return err ? err : -1;
- }
-
- pr_info("erasing block %d\n", ebnum2);
- err = erase_eraseblock(ebnum2);
- if (err)
- return err;
-
- pr_info("reading 1st page of block %d\n", ebnum);
- memset(readbuf, 0, pgsize);
- err = mtd_read(mtd, addr0, pgsize, &read, readbuf);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != pgsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)addr0);
- return err ? err : -1;
- }
-
- pr_info("verifying 1st page of block %d\n", ebnum);
- if (memcmp(writebuf, readbuf, pgsize)) {
- pr_err("verify failed!\n");
- errcnt += 1;
- return -1;
- }
-
- if (!err)
- pr_info("erasecrosstest ok\n");
- return err;
-}
-
-static int erasetest(void)
-{
- size_t read, written;
- int err = 0, i, ebnum, ok = 1;
- loff_t addr0;
-
- pr_info("erasetest\n");
-
- ebnum = 0;
- addr0 = 0;
- for (i = 0; i < ebcnt && bbt[i]; ++i) {
- addr0 += mtd->erasesize;
- ebnum += 1;
- }
-
- pr_info("erasing block %d\n", ebnum);
- err = erase_eraseblock(ebnum);
- if (err)
- return err;
-
- pr_info("writing 1st page of block %d\n", ebnum);
- prandom_bytes_state(&rnd_state, writebuf, pgsize);
- err = mtd_write(mtd, addr0, pgsize, &written, writebuf);
- if (err || written != pgsize) {
- pr_err("error: write failed at %#llx\n",
- (long long)addr0);
- return err ? err : -1;
- }
-
- pr_info("erasing block %d\n", ebnum);
- err = erase_eraseblock(ebnum);
- if (err)
- return err;
-
- pr_info("reading 1st page of block %d\n", ebnum);
- err = mtd_read(mtd, addr0, pgsize, &read, twopages);
- if (mtd_is_bitflip(err))
- err = 0;
- if (err || read != pgsize) {
- pr_err("error: read failed at %#llx\n",
- (long long)addr0);
- return err ? err : -1;
- }
-
- pr_info("verifying 1st page of block %d is all 0xff\n",
- ebnum);
- for (i = 0; i < pgsize; ++i)
- if (twopages[i] != 0xff) {
- pr_err("verifying all 0xff failed at %d\n",
- i);
- errcnt += 1;
- ok = 0;
- break;
- }
-
- if (ok && !err)
- pr_info("erasetest ok\n");
-
- return err;
-}
-
-static int is_block_bad(int ebnum)
-{
- loff_t addr = ebnum * mtd->erasesize;
- int ret;
-
- ret = mtd_block_isbad(mtd, addr);
- if (ret)
- pr_info("block %d is bad\n", ebnum);
- return ret;
-}
-
-static int scan_for_bad_eraseblocks(void)
-{
- int i, bad = 0;
-
- bbt = kzalloc(ebcnt, GFP_KERNEL);
- if (!bbt) {
- pr_err("error: cannot allocate memory\n");
- return -ENOMEM;
- }
-
- pr_info("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();
- }
- pr_info("scanned %d eraseblocks, %d are bad\n", i, bad);
- return 0;
-}
-
-static int __init mtd_pagetest_init(void)
-{
- int err = 0;
- uint64_t tmp;
- uint32_t i;
-
- printk(KERN_INFO "\n");
- printk(KERN_INFO "=================================================\n");
-
- if (dev < 0) {
- pr_info("Please specify a valid mtd-device via module parameter\n");
- pr_crit("CAREFUL: This test wipes all data on the specified MTD device!\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->type != MTD_NANDFLASH) {
- pr_info("this test requires NAND flash\n");
- goto out;
- }
-
- tmp = mtd->size;
- do_div(tmp, mtd->erasesize);
- ebcnt = tmp;
- pgcnt = mtd->erasesize / mtd->writesize;
- pgsize = mtd->writesize;
-
- 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;
- bufsize = pgsize * 2;
- writebuf = kmalloc(mtd->erasesize, GFP_KERNEL);
- if (!writebuf) {
- pr_err("error: cannot allocate memory\n");
- goto out;
- }
- twopages = kmalloc(bufsize, GFP_KERNEL);
- if (!twopages) {
- pr_err("error: cannot allocate memory\n");
- goto out;
- }
- boundary = kmalloc(bufsize, GFP_KERNEL);
- if (!boundary) {
- pr_err("error: cannot allocate memory\n");
- goto out;
- }
-
- err = scan_for_bad_eraseblocks();
- if (err)
- goto out;
-
- /* Erase all eraseblocks */
- pr_info("erasing whole device\n");
- for (i = 0; i < ebcnt; ++i) {
- if (bbt[i])
- continue;
- err = erase_eraseblock(i);
- if (err)
- goto out;
- cond_resched();
- }
- pr_info("erased %u eraseblocks\n", i);
-
- /* Write all eraseblocks */
- prandom_seed_state(&rnd_state, 1);
- pr_info("writing whole device\n");
- for (i = 0; i < ebcnt; ++i) {
- if (bbt[i])
- continue;
- err = write_eraseblock(i);
- if (err)
- goto out;
- if (i % 256 == 0)
- pr_info("written up to eraseblock %u\n", i);
- cond_resched();
- }
- pr_info("written %u eraseblocks\n", i);
-
- /* Check all eraseblocks */
- prandom_seed_state(&rnd_state, 1);
- pr_info("verifying all eraseblocks\n");
- for (i = 0; i < ebcnt; ++i) {
- if (bbt[i])
- continue;
- err = verify_eraseblock(i);
- if (err)
- goto out;
- if (i % 256 == 0)
- pr_info("verified up to eraseblock %u\n", i);
- cond_resched();
- }
- pr_info("verified %u eraseblocks\n", i);
-
- err = crosstest();
- if (err)
- goto out;
-
- err = erasecrosstest();
- if (err)
- goto out;
-
- err = erasetest();
- if (err)
- goto out;
-
- pr_info("finished with %d errors\n", errcnt);
-out:
-
- kfree(bbt);
- kfree(boundary);
- kfree(twopages);
- kfree(writebuf);
- put_mtd_device(mtd);
- if (err)
- pr_info("error %d occurred\n", err);
- printk(KERN_INFO "=================================================\n");
- return err;
-}
-module_init(mtd_pagetest_init);
-
-static void __exit mtd_pagetest_exit(void)
-{
- return;
-}
-module_exit(mtd_pagetest_exit);
-
-MODULE_DESCRIPTION("NAND page test");
-MODULE_AUTHOR("Adrian Hunter");
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-25 22:22:42 +0000