This test write data to the card, then send DISCARD on random
addresses on the card, send SANITIZE to the card to erase all
the unmapped areas.
Signed-off-by: Maya Erez <me...@codeaurora.org>
---
This patch depends of the following patches:
[PATCH RESEND v7 1/2] block: ioctl support for sanitize in eMMC 4.5
[PATCH RESEND v7 2/2] mmc: card: Adding support for sanitize in eMMC 4.5
[PATCH v4 2/3] block: Add test-iosched scheduler
[PATCH v4 3/3] mmc: card: Add eMMC4.5 write packed commands unit-tests
---
block/test-iosched.c | 3 +
drivers/mmc/card/mmc_block_test.c | 120 +++++++++++++++++++++++++++++++++++++
include/linux/test-iosched.h | 1 +
3 files changed, 124 insertions(+), 0 deletions(-)
diff --git a/block/test-iosched.c b/block/test-iosched.c
index 6f0b0b3..e04befd 100644
--- a/block/test-iosched.c
+++ b/block/test-iosched.c
@@ -173,6 +173,9 @@ int test_iosched_add_unique_test_req(int is_err_expcted,
bio->bi_size = nr_sects << 9;
bio->bi_sector = start_sec;
break;
+ case REQ_UNIQUE_SANITIZE:
+ bio->bi_rw = REQ_WRITE | REQ_SANITIZE;
+ break;
default:
test_pr_err("%s: Invalid request type %d", __func__,
req_unique);
diff --git a/drivers/mmc/card/mmc_block_test.c
b/drivers/mmc/card/mmc_block_test.c
index f2a0ac7..25af8cc 100644
--- a/drivers/mmc/card/mmc_block_test.c
+++ b/drivers/mmc/card/mmc_block_test.c
@@ -33,11 +33,16 @@
#define PACKED_HDR_RW_MASK 0x0000FF00
#define PACKED_HDR_NUM_REQS_MASK 0x00FF0000
#define PACKED_HDR_BITS_16_TO_29_SET 0x3FFF0000
+#define SECTOR_SIZE 512
+#define NUM_OF_SECTORS_PER_BIO ((BIO_U32_SIZE * 4) / SECTOR_SIZE)
+#define BIO_TO_SECTOR(x) (x * NUM_OF_SECTORS_PER_BIO)
#define test_pr_debug(fmt, args...) pr_debug("%s: "fmt"\n", MODULE_NAME, args)
#define test_pr_info(fmt, args...) pr_info("%s: "fmt"\n", MODULE_NAME, args)
#define test_pr_err(fmt, args...) pr_err("%s: "fmt"\n", MODULE_NAME, args)
+#define SANITIZE_TEST_TIMEOUT 240000
+
enum is_random {
NON_RANDOM_TEST,
RANDOM_TEST,
@@ -83,6 +88,8 @@ enum mmc_block_test_testcases {
TEST_CMD23_BITS_16TO29_SET,
TEST_CMD23_HDR_BLK_NOT_IN_COUNT,
INVALID_CMD_MAX_TESTCASE = TEST_CMD23_HDR_BLK_NOT_IN_COUNT,
+
+ TEST_WRITE_DISCARD_SANITIZE_READ,
};
enum mmc_block_test_group {
@@ -98,6 +105,7 @@ struct mmc_block_test_debug {
struct dentry *err_check_test;
struct dentry *send_invalid_packed_test;
struct dentry *random_test_seed;
+ struct dentry *discard_sanitize_test;
};
struct mmc_block_test_data {
@@ -454,6 +462,8 @@ static char *get_test_case_str(struct test_data *td)
return "Test invalid - cmd23 bits [16-29] set";
case TEST_CMD23_HDR_BLK_NOT_IN_COUNT:
return "Test invalid - cmd23 header block not in count";
+ case TEST_WRITE_DISCARD_SANITIZE_READ:
+ return "\nTest write, discard, sanitize";
default:
return "Unknown testcase";
}
@@ -1080,6 +1090,63 @@ static int validate_packed_commands_settings(void)
return 0;
}
+static void pseudo_rnd_sector_and_size(unsigned int *seed,
+ unsigned int min_start_sector,
+ unsigned int *start_sector,
+ unsigned int *num_of_bios)
+{
+ unsigned int max_sec = min_start_sector + TEST_MAX_SECTOR_RANGE;
+ do {
+ *start_sector = pseudo_random_seed(seed,
+ 1, max_sec);
+ *num_of_bios = pseudo_random_seed(seed,
+ 1, TEST_MAX_BIOS_PER_REQ);
+ if (!(*num_of_bios))
+ *num_of_bios = 1;
+ } while ((*start_sector < min_start_sector) ||
+ (*start_sector + (*num_of_bios * BIO_U32_SIZE * 4)) > max_sec);
+}
+
+/* sanitize test functions */
+static int prepare_write_discard_sanitize_read(struct test_data *td)
+{
+ unsigned int start_sector;
+ unsigned int num_of_bios = 0;
+ static unsigned int total_bios;
+ unsigned int *num_bios_seed;
+ int i = 0;
+
+ if (mbtd->random_test_seed == 0) {
+ mbtd->random_test_seed =
+ (unsigned int)(get_jiffies_64() & 0xFFFF);
+ test_pr_info("%s: got seed from jiffies %d",
+ __func__, mbtd->random_test_seed);
+ }
+ num_bios_seed = &mbtd->random_test_seed;
+
+ do {
+ pseudo_rnd_sector_and_size(num_bios_seed, td->start_sector,
+ &start_sector, &num_of_bios);
+
+ /* DISCARD */
+ total_bios += num_of_bios;
+ test_pr_info("%s: discard req: id=%d, startSec=%d, NumBios=%d",
+ __func__, td->unique_next_req_id, start_sector,
+ num_of_bios);
+ test_iosched_add_unique_test_req(0, REQ_UNIQUE_DISCARD,
+ start_sector, BIO_TO_SECTOR(num_of_bios),
+ NULL);
+
+ } while (++i < (BLKDEV_MAX_RQ-10));
+
+ test_pr_info("%s: total discard bios = %d", __func__, total_bios);
+
+ test_pr_info("%s: add sanitize req", __func__);
+ test_iosched_add_unique_test_req(0, REQ_UNIQUE_SANITIZE, 0, 0, NULL);
+
+ return 0;
+}
+
static bool message_repeat;
static int test_open(struct inode *inode, struct file *file)
{
@@ -1397,12 +1464,56 @@ const struct file_operations
send_invalid_packed_test_ops = {
.read = send_invalid_packed_test_read,
};
+static ssize_t write_discard_sanitize_test_write(struct file *file,
+ const char __user *buf,
+ size_t count,
+ loff_t *ppos)
+{
+ int ret = 0;
+ int i = 0;
+ int number = -1;
+
+ sscanf(buf, "%d", &number);
+ if (number <= 0)
+ number = 1;
+
+ test_pr_info("%s: -- write_discard_sanitize TEST --\n", __func__);
+
+ memset(&mbtd->test_info, 0, sizeof(struct test_info));
+
+ mbtd->test_group = TEST_GENERAL_GROUP;
+
+ mbtd->test_info.data = mbtd;
+ mbtd->test_info.prepare_test_fn = prepare_write_discard_sanitize_read;
+ mbtd->test_info.get_test_case_str_fn = get_test_case_str;
+ mbtd->test_info.timeout_msec = SANITIZE_TEST_TIMEOUT;
+
+ for (i = 0 ; i < number ; ++i) {
+ test_pr_info("%s: Cycle # %d / %d\n", __func__, i+1, number);
+ test_pr_info("%s: ===================", __func__);
+
+ mbtd->test_info.testcase = TEST_WRITE_DISCARD_SANITIZE_READ;
+ ret = test_iosched_start_test(&mbtd->test_info);
+
+ if (ret)
+ break;
+ }
+
+ return count;
+}
+
+const struct file_operations write_discard_sanitize_test_ops = {
+ .open = test_open,
+ .write = write_discard_sanitize_test_write,
+};
+
static void mmc_block_test_debugfs_cleanup(void)
{
debugfs_remove(mbtd->debug.random_test_seed);
debugfs_remove(mbtd->debug.send_write_packing_test);
debugfs_remove(mbtd->debug.err_check_test);
debugfs_remove(mbtd->debug.send_invalid_packed_test);
+ debugfs_remove(mbtd->debug.discard_sanitize_test);
}
static int mmc_block_test_debugfs_init(void)
@@ -1454,6 +1565,15 @@ static int mmc_block_test_debugfs_init(void)
if (!mbtd->debug.send_invalid_packed_test)
goto err_nomem;
+ mbtd->debug.discard_sanitize_test =
+ debugfs_create_file("write_discard_sanitize_test",
+ S_IRUGO | S_IWUGO,
+ tests_root,
+ NULL,
+ &write_discard_sanitize_test_ops);
+ if (!mbtd->debug.discard_sanitize_test)
+ goto err_nomem;
+
return 0;
err_nomem:
diff --git a/include/linux/test-iosched.h b/include/linux/test-iosched.h
index 8054409..1e428c5 100644
--- a/include/linux/test-iosched.h
+++ b/include/linux/test-iosched.h
@@ -65,6 +65,7 @@ enum req_unique_type {
REQ_UNIQUE_NONE,
REQ_UNIQUE_DISCARD,
REQ_UNIQUE_FLUSH,
+ REQ_UNIQUE_SANITIZE,
};
/**
--
1.7.3.3
--
Sent by a consultant of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum
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