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authorDavid S. Miller <davem@davemloft.net>2010-01-22 22:45:46 -0800
committerDavid S. Miller <davem@davemloft.net>2010-01-22 22:45:46 -0800
commit6be325719b3e54624397e413efd4b33a997e55a3 (patch)
tree57f321a56794cab2222e179b16731e0d76a4a68a /drivers/mtd/tests
parent26d92f9276a56d55511a427fb70bd70886af647a (diff)
parent92dcffb916d309aa01778bf8963a6932e4014d07 (diff)
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'drivers/mtd/tests')
-rw-r--r--drivers/mtd/tests/Makefile1
-rw-r--r--drivers/mtd/tests/mtd_nandecctest.c87
-rw-r--r--drivers/mtd/tests/mtd_oobtest.c18
-rw-r--r--drivers/mtd/tests/mtd_pagetest.c1
4 files changed, 93 insertions, 14 deletions
diff --git a/drivers/mtd/tests/Makefile b/drivers/mtd/tests/Makefile
index c1d50133500..b44dcab940d 100644
--- a/drivers/mtd/tests/Makefile
+++ b/drivers/mtd/tests/Makefile
@@ -5,3 +5,4 @@ obj-$(CONFIG_MTD_TESTS) += mtd_speedtest.o
obj-$(CONFIG_MTD_TESTS) += mtd_stresstest.o
obj-$(CONFIG_MTD_TESTS) += mtd_subpagetest.o
obj-$(CONFIG_MTD_TESTS) += mtd_torturetest.o
+obj-$(CONFIG_MTD_TESTS) += mtd_nandecctest.o
diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c
new file mode 100644
index 00000000000..c1f31051784
--- /dev/null
+++ b/drivers/mtd/tests/mtd_nandecctest.c
@@ -0,0 +1,87 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/string.h>
+#include <linux/bitops.h>
+#include <linux/jiffies.h>
+#include <linux/mtd/nand_ecc.h>
+
+#if defined(CONFIG_MTD_NAND) || defined(CONFIG_MTD_NAND_MODULE)
+
+static void inject_single_bit_error(void *data, size_t size)
+{
+ unsigned long offset = random32() % (size * BITS_PER_BYTE);
+
+ __change_bit(offset, data);
+}
+
+static unsigned char data[512];
+static unsigned char error_data[512];
+
+static int nand_ecc_test(const size_t size)
+{
+ unsigned char code[3];
+ unsigned char error_code[3];
+ char testname[30];
+
+ BUG_ON(sizeof(data) < size);
+
+ sprintf(testname, "nand-ecc-%zu", size);
+
+ get_random_bytes(data, size);
+
+ memcpy(error_data, data, size);
+ inject_single_bit_error(error_data, size);
+
+ __nand_calculate_ecc(data, size, code);
+ __nand_calculate_ecc(error_data, size, error_code);
+ __nand_correct_data(error_data, code, error_code, size);
+
+ if (!memcmp(data, error_data, size)) {
+ printk(KERN_INFO "mtd_nandecctest: ok - %s\n", testname);
+ return 0;
+ }
+
+ printk(KERN_ERR "mtd_nandecctest: not ok - %s\n", testname);
+
+ printk(KERN_DEBUG "hexdump of data:\n");
+ print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
+ data, size, false);
+ printk(KERN_DEBUG "hexdump of error data:\n");
+ print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
+ error_data, size, false);
+
+ return -1;
+}
+
+#else
+
+static int nand_ecc_test(const size_t size)
+{
+ return 0;
+}
+
+#endif
+
+static int __init ecc_test_init(void)
+{
+ srandom32(jiffies);
+
+ nand_ecc_test(256);
+ nand_ecc_test(512);
+
+ return 0;
+}
+
+static void __exit ecc_test_exit(void)
+{
+}
+
+module_init(ecc_test_init);
+module_exit(ecc_test_exit);
+
+MODULE_DESCRIPTION("NAND ECC function test module");
+MODULE_AUTHOR("Akinobu Mita");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/mtd_oobtest.c b/drivers/mtd/tests/mtd_oobtest.c
index 5553cd4eab2..5813920e79a 100644
--- a/drivers/mtd/tests/mtd_oobtest.c
+++ b/drivers/mtd/tests/mtd_oobtest.c
@@ -343,7 +343,6 @@ static int scan_for_bad_eraseblocks(void)
printk(PRINT_PREF "error: cannot allocate memory\n");
return -ENOMEM;
}
- memset(bbt, 0 , ebcnt);
printk(PRINT_PREF "scanning for bad eraseblocks\n");
for (i = 0; i < ebcnt; ++i) {
@@ -392,7 +391,6 @@ static int __init mtd_oobtest_init(void)
mtd->writesize, ebcnt, pgcnt, mtd->oobsize);
err = -ENOMEM;
- mtd->erasesize = mtd->erasesize;
readbuf = kmalloc(mtd->erasesize, GFP_KERNEL);
if (!readbuf) {
printk(PRINT_PREF "error: cannot allocate memory\n");
@@ -476,18 +474,10 @@ static int __init mtd_oobtest_init(void)
use_len_max = mtd->ecclayout->oobavail;
vary_offset = 1;
simple_srand(5);
- 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)
- goto out;
- if (i % 256 == 0)
- printk(PRINT_PREF "written up to eraseblock %u\n", i);
- cond_resched();
- }
- printk(PRINT_PREF "written %u eraseblocks\n", i);
+
+ err = write_whole_device();
+ if (err)
+ goto out;
/* Check all eraseblocks */
use_offset = 0;
diff --git a/drivers/mtd/tests/mtd_pagetest.c b/drivers/mtd/tests/mtd_pagetest.c
index 103cac480fe..ce17cbe918c 100644
--- a/drivers/mtd/tests/mtd_pagetest.c
+++ b/drivers/mtd/tests/mtd_pagetest.c
@@ -523,6 +523,7 @@ static int __init mtd_pagetest_init(void)
do_div(tmp, mtd->erasesize);
ebcnt = tmp;
pgcnt = mtd->erasesize / mtd->writesize;
+ pgsize = mtd->writesize;
printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
"page size %u, count of eraseblocks %u, pages per "