Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm / 1199b4c2a6a04014be8e76fecd88fb70fc032954 / . / drivers / mmc / card / mmc_block_test.c
blob: e0b7e35f10899a4a14e5812310043540bc40b57a [file] [log] [blame]
/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only 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.
*
*/
/* MMC block test */
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/debugfs.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/delay.h>
#include <linux/test-iosched.h>
#include <linux/jiffies.h>
#include "queue.h"
#include <linux/mmc/mmc.h>
#define MODULE_NAME "mmc_block_test"
#define TEST_MAX_SECTOR_RANGE (600*1024*1024) /* 600 MB */
#define TEST_MAX_BIOS_PER_REQ 120
#define CMD23_PACKED_BIT (1 << 30)
#define LARGE_PRIME_1 1103515367
#define LARGE_PRIME_2 35757
#define PACKED_HDR_VER_MASK 0x000000FF
#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)
/* the desired long test size to be written or read */
#define LONG_TEST_MAX_NUM_BYTES (50*1024*1024) /* 50MB */
/* request queue limitation is 128 requests, and we leave 10 spare requests */
#define TEST_MAX_REQUESTS 118
#define LONG_TEST_MAX_NUM_REQS (LONG_TEST_MAX_NUM_BYTES / \
(TEST_MAX_BIOS_PER_REQ * sizeof(int) * BIO_U32_SIZE))
/* this doesn't allow the test requests num to be greater than the maximum */
#define LONG_TEST_ACTUAL_NUM_REQS \
((TEST_MAX_REQUESTS < LONG_TEST_MAX_NUM_REQS) ? \
TEST_MAX_REQUESTS : LONG_TEST_MAX_NUM_REQS)
#define MB_MSEC_RATIO_APPROXIMATION ((1024 * 1024) / 1000)
/* actual number of bytes in test */
#define LONG_TEST_ACTUAL_BYTE_NUM (LONG_TEST_ACTUAL_NUM_REQS * \
(TEST_MAX_BIOS_PER_REQ * sizeof(int) * BIO_U32_SIZE))
/* actual number of MiB in test multiplied by 10, for single digit precision*/
#define LONG_TEST_ACTUAL_MB_NUM_X_10 ((LONG_TEST_ACTUAL_BYTE_NUM * 10) / \
(1024 * 1024))
/* extract integer value */
#define LONG_TEST_SIZE_INTEGER (LONG_TEST_ACTUAL_MB_NUM_X_10 / 10)
/* and calculate the MiB value fraction */
#define LONG_TEST_SIZE_FRACTION (LONG_TEST_ACTUAL_MB_NUM_X_10 - \
(LONG_TEST_SIZE_INTEGER * 10))
#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
#define TEST_REQUEST_NUM_OF_BIOS 3
#define CHECK_BKOPS_STATS(stats, exp_bkops, exp_hpi, exp_suspend) \
((stats.bkops != exp_bkops) || \
(stats.hpi != exp_hpi) || \
(stats.suspend != exp_suspend))
#define BKOPS_TEST_TIMEOUT 60000
enum is_random {
NON_RANDOM_TEST,
RANDOM_TEST,
};
enum mmc_block_test_testcases {
/* Start of send write packing test group */
SEND_WRITE_PACKING_MIN_TESTCASE,
TEST_STOP_DUE_TO_READ = SEND_WRITE_PACKING_MIN_TESTCASE,
TEST_STOP_DUE_TO_READ_AFTER_MAX_REQS,
TEST_STOP_DUE_TO_FLUSH,
TEST_STOP_DUE_TO_FLUSH_AFTER_MAX_REQS,
TEST_STOP_DUE_TO_EMPTY_QUEUE,
TEST_STOP_DUE_TO_MAX_REQ_NUM,
TEST_STOP_DUE_TO_THRESHOLD,
SEND_WRITE_PACKING_MAX_TESTCASE = TEST_STOP_DUE_TO_THRESHOLD,
/* Start of err check test group */
ERR_CHECK_MIN_TESTCASE,
TEST_RET_ABORT = ERR_CHECK_MIN_TESTCASE,
TEST_RET_PARTIAL_FOLLOWED_BY_SUCCESS,
TEST_RET_PARTIAL_FOLLOWED_BY_ABORT,
TEST_RET_PARTIAL_MULTIPLE_UNTIL_SUCCESS,
TEST_RET_PARTIAL_MAX_FAIL_IDX,
TEST_RET_RETRY,
TEST_RET_CMD_ERR,
TEST_RET_DATA_ERR,
ERR_CHECK_MAX_TESTCASE = TEST_RET_DATA_ERR,
/* Start of send invalid test group */
INVALID_CMD_MIN_TESTCASE,
TEST_HDR_INVALID_VERSION = INVALID_CMD_MIN_TESTCASE,
TEST_HDR_WRONG_WRITE_CODE,
TEST_HDR_INVALID_RW_CODE,
TEST_HDR_DIFFERENT_ADDRESSES,
TEST_HDR_REQ_NUM_SMALLER_THAN_ACTUAL,
TEST_HDR_REQ_NUM_LARGER_THAN_ACTUAL,
TEST_HDR_CMD23_PACKED_BIT_SET,
TEST_CMD23_MAX_PACKED_WRITES,
TEST_CMD23_ZERO_PACKED_WRITES,
TEST_CMD23_PACKED_BIT_UNSET,
TEST_CMD23_REL_WR_BIT_SET,
TEST_CMD23_BITS_16TO29_SET,
TEST_CMD23_HDR_BLK_NOT_IN_COUNT,
INVALID_CMD_MAX_TESTCASE = TEST_CMD23_HDR_BLK_NOT_IN_COUNT,
/*
* Start of packing control test group.
* in these next testcases the abbreviation FB = followed by
*/
PACKING_CONTROL_MIN_TESTCASE,
TEST_PACKING_EXP_ONE_OVER_TRIGGER_FB_READ =
PACKING_CONTROL_MIN_TESTCASE,
TEST_PACKING_EXP_N_OVER_TRIGGER,
TEST_PACKING_EXP_N_OVER_TRIGGER_FB_READ,
TEST_PACKING_EXP_N_OVER_TRIGGER_FLUSH_N,
TEST_PACKING_EXP_THRESHOLD_OVER_TRIGGER,
TEST_PACKING_NOT_EXP_LESS_THAN_TRIGGER_REQUESTS,
TEST_PACKING_NOT_EXP_TRIGGER_REQUESTS,
TEST_PACKING_NOT_EXP_TRIGGER_READ_TRIGGER,
TEST_PACKING_NOT_EXP_TRIGGER_FLUSH_TRIGGER,
TEST_PACK_MIX_PACKED_NO_PACKED_PACKED,
TEST_PACK_MIX_NO_PACKED_PACKED_NO_PACKED,
PACKING_CONTROL_MAX_TESTCASE = TEST_PACK_MIX_NO_PACKED_PACKED_NO_PACKED,
TEST_WRITE_DISCARD_SANITIZE_READ,
/* Start of bkops test group */
BKOPS_MIN_TESTCASE,
BKOPS_DELAYED_WORK_LEVEL_1 = BKOPS_MIN_TESTCASE,
BKOPS_DELAYED_WORK_LEVEL_1_HPI,
BKOPS_CANCEL_DELAYED_WORK,
BKOPS_URGENT_LEVEL_2,
BKOPS_URGENT_LEVEL_2_TWO_REQS,
BKOPS_URGENT_LEVEL_3,
BKOPS_MAX_TESTCASE = BKOPS_URGENT_LEVEL_3,
TEST_LONG_SEQUENTIAL_READ,
TEST_LONG_SEQUENTIAL_WRITE,
};
enum mmc_block_test_group {
TEST_NO_GROUP,
TEST_GENERAL_GROUP,
TEST_SEND_WRITE_PACKING_GROUP,
TEST_ERR_CHECK_GROUP,
TEST_SEND_INVALID_GROUP,
TEST_PACKING_CONTROL_GROUP,
TEST_BKOPS_GROUP,
};
enum bkops_test_stages {
BKOPS_STAGE_1,
BKOPS_STAGE_2,
BKOPS_STAGE_3,
BKOPS_STAGE_4,
};
struct mmc_block_test_debug {
struct dentry *send_write_packing_test;
struct dentry *err_check_test;
struct dentry *send_invalid_packed_test;
struct dentry *random_test_seed;
struct dentry *packing_control_test;
struct dentry *discard_sanitize_test;
struct dentry *bkops_test;
struct dentry *long_sequential_read_test;
struct dentry *long_sequential_write_test;
};
struct mmc_block_test_data {
/* The number of write requests that the test will issue */
int num_requests;
/* The expected write packing statistics for the current test */
struct mmc_wr_pack_stats exp_packed_stats;
/*
* A user-defined seed for random choices of number of bios written in
* a request, and of number of requests issued in a test
* This field is randomly updated after each use
*/
unsigned int random_test_seed;
/* A retry counter used in err_check tests */
int err_check_counter;
/* Can be one of the values of enum test_group */
enum mmc_block_test_group test_group;
/*
* Indicates if the current testcase is running with random values of
* num_requests and num_bios (in each request)
*/
int is_random;
/* Data structure for debugfs dentrys */
struct mmc_block_test_debug debug;
/*
* Data structure containing individual test information, including
* self-defined specific data
*/
struct test_info test_info;
/* mmc block device test */
struct blk_dev_test_type bdt;
/* Current BKOPs test stage */
enum bkops_test_stages bkops_stage;
/* A wait queue for BKOPs tests */
wait_queue_head_t bkops_wait_q;
};
static struct mmc_block_test_data *mbtd;
void print_mmc_packing_stats(struct mmc_card *card)
{
int i;
int max_num_of_packed_reqs = 0;
if ((!card) || (!card->wr_pack_stats.packing_events))
return;
max_num_of_packed_reqs = card->ext_csd.max_packed_writes;
spin_lock(&card->wr_pack_stats.lock);
pr_info("%s: write packing statistics:\n",
mmc_hostname(card->host));
for (i = 1 ; i <= max_num_of_packed_reqs ; ++i) {
if (card->wr_pack_stats.packing_events[i] != 0)
pr_info("%s: Packed %d reqs - %d times\n",
mmc_hostname(card->host), i,
card->wr_pack_stats.packing_events[i]);
}
pr_info("%s: stopped packing due to the following reasons:\n",
mmc_hostname(card->host));
if (card->wr_pack_stats.pack_stop_reason[EXCEEDS_SEGMENTS])
pr_info("%s: %d times: exceedmax num of segments\n",
mmc_hostname(card->host),
card->wr_pack_stats.pack_stop_reason[EXCEEDS_SEGMENTS]);
if (card->wr_pack_stats.pack_stop_reason[EXCEEDS_SECTORS])
pr_info("%s: %d times: exceeding the max num of sectors\n",
mmc_hostname(card->host),
card->wr_pack_stats.pack_stop_reason[EXCEEDS_SECTORS]);
if (card->wr_pack_stats.pack_stop_reason[WRONG_DATA_DIR])
pr_info("%s: %d times: wrong data direction\n",
mmc_hostname(card->host),
card->wr_pack_stats.pack_stop_reason[WRONG_DATA_DIR]);
if (card->wr_pack_stats.pack_stop_reason[FLUSH_OR_DISCARD])
pr_info("%s: %d times: flush or discard\n",
mmc_hostname(card->host),
card->wr_pack_stats.pack_stop_reason[FLUSH_OR_DISCARD]);
if (card->wr_pack_stats.pack_stop_reason[EMPTY_QUEUE])
pr_info("%s: %d times: empty queue\n",
mmc_hostname(card->host),
card->wr_pack_stats.pack_stop_reason[EMPTY_QUEUE]);
if (card->wr_pack_stats.pack_stop_reason[REL_WRITE])
pr_info("%s: %d times: rel write\n",
mmc_hostname(card->host),
card->wr_pack_stats.pack_stop_reason[REL_WRITE]);
if (card->wr_pack_stats.pack_stop_reason[THRESHOLD])
pr_info("%s: %d times: Threshold\n",
mmc_hostname(card->host),
card->wr_pack_stats.pack_stop_reason[THRESHOLD]);
spin_unlock(&card->wr_pack_stats.lock);
}
/*
* A callback assigned to the packed_test_fn field.
* Called from block layer in mmc_blk_packed_hdr_wrq_prep.
* Here we alter the packed header or CMD23 in order to send an invalid
* packed command to the card.
*/
static void test_invalid_packed_cmd(struct request_queue *q,
struct mmc_queue_req *mqrq)
{
struct mmc_queue *mq = q->queuedata;
u32 *packed_cmd_hdr = mqrq->packed_cmd_hdr;
struct request *req = mqrq->req;
struct request *second_rq;
struct test_request *test_rq;
struct mmc_blk_request *brq = &mqrq->brq;
int num_requests;
int max_packed_reqs;
if (!mq) {
test_pr_err("%s: NULL mq", __func__);
return;
}
test_rq = (struct test_request *)req->elv.priv[0];
if (!test_rq) {
test_pr_err("%s: NULL test_rq", __func__);
return;
}
max_packed_reqs = mq->card->ext_csd.max_packed_writes;
switch (mbtd->test_info.testcase) {
case TEST_HDR_INVALID_VERSION:
test_pr_info("%s: set invalid header version", __func__);
/* Put 0 in header version field (1 byte, offset 0 in header) */
packed_cmd_hdr[0] = packed_cmd_hdr[0] & ~PACKED_HDR_VER_MASK;
break;
case TEST_HDR_WRONG_WRITE_CODE:
test_pr_info("%s: wrong write code", __func__);
/* Set R/W field with R value (1 byte, offset 1 in header) */
packed_cmd_hdr[0] = packed_cmd_hdr[0] & ~PACKED_HDR_RW_MASK;
packed_cmd_hdr[0] = packed_cmd_hdr[0] | 0x00000100;
break;
case TEST_HDR_INVALID_RW_CODE:
test_pr_info("%s: invalid r/w code", __func__);
/* Set R/W field with invalid value */
packed_cmd_hdr[0] = packed_cmd_hdr[0] & ~PACKED_HDR_RW_MASK;
packed_cmd_hdr[0] = packed_cmd_hdr[0] | 0x00000400;
break;
case TEST_HDR_DIFFERENT_ADDRESSES:
test_pr_info("%s: different addresses", __func__);
second_rq = list_entry(req->queuelist.next, struct request,
queuelist);
test_pr_info("%s: test_rq->sector=%ld, second_rq->sector=%ld",
__func__, (long)req->__sector,
(long)second_rq->__sector);
/*
* Put start sector of second write request in the first write
* request's cmd25 argument in the packed header
*/
packed_cmd_hdr[3] = second_rq->__sector;
break;
case TEST_HDR_REQ_NUM_SMALLER_THAN_ACTUAL:
test_pr_info("%s: request num smaller than actual" , __func__);
num_requests = (packed_cmd_hdr[0] & PACKED_HDR_NUM_REQS_MASK)
>> 16;
/* num of entries is decremented by 1 */
num_requests = (num_requests - 1) << 16;
/*
* Set number of requests field in packed write header to be
* smaller than the actual number (1 byte, offset 2 in header)
*/
packed_cmd_hdr[0] = (packed_cmd_hdr[0] &
~PACKED_HDR_NUM_REQS_MASK) + num_requests;
break;
case TEST_HDR_REQ_NUM_LARGER_THAN_ACTUAL:
test_pr_info("%s: request num larger than actual" , __func__);
num_requests = (packed_cmd_hdr[0] & PACKED_HDR_NUM_REQS_MASK)
>> 16;
/* num of entries is incremented by 1 */
num_requests = (num_requests + 1) << 16;
/*
* Set number of requests field in packed write header to be
* larger than the actual number (1 byte, offset 2 in header).
*/
packed_cmd_hdr[0] = (packed_cmd_hdr[0] &
~PACKED_HDR_NUM_REQS_MASK) + num_requests;
break;
case TEST_HDR_CMD23_PACKED_BIT_SET:
test_pr_info("%s: header CMD23 packed bit set" , __func__);
/*
* Set packed bit (bit 30) in cmd23 argument of first and second
* write requests in packed write header.
* These are located at bytes 2 and 4 in packed write header
*/
packed_cmd_hdr[2] = packed_cmd_hdr[2] | CMD23_PACKED_BIT;
packed_cmd_hdr[4] = packed_cmd_hdr[4] | CMD23_PACKED_BIT;
break;
case TEST_CMD23_MAX_PACKED_WRITES:
test_pr_info("%s: CMD23 request num > max_packed_reqs",
__func__);
/*
* Set the individual packed cmd23 request num to
* max_packed_reqs + 1
*/
brq->sbc.arg = MMC_CMD23_ARG_PACKED | (max_packed_reqs + 1);
break;
case TEST_CMD23_ZERO_PACKED_WRITES:
test_pr_info("%s: CMD23 request num = 0", __func__);
/* Set the individual packed cmd23 request num to zero */
brq->sbc.arg = MMC_CMD23_ARG_PACKED;
break;
case TEST_CMD23_PACKED_BIT_UNSET:
test_pr_info("%s: CMD23 packed bit unset", __func__);
/*
* Set the individual packed cmd23 packed bit to 0,
* although there is a packed write request
*/
brq->sbc.arg &= ~CMD23_PACKED_BIT;
break;
case TEST_CMD23_REL_WR_BIT_SET:
test_pr_info("%s: CMD23 REL WR bit set", __func__);
/* Set the individual packed cmd23 reliable write bit */
brq->sbc.arg = MMC_CMD23_ARG_PACKED | MMC_CMD23_ARG_REL_WR;
break;
case TEST_CMD23_BITS_16TO29_SET:
test_pr_info("%s: CMD23 bits [16-29] set", __func__);
brq->sbc.arg = MMC_CMD23_ARG_PACKED |
PACKED_HDR_BITS_16_TO_29_SET;
break;
case TEST_CMD23_HDR_BLK_NOT_IN_COUNT:
test_pr_info("%s: CMD23 hdr not in block count", __func__);
brq->sbc.arg = MMC_CMD23_ARG_PACKED |
((rq_data_dir(req) == READ) ? 0 : mqrq->packed_blocks);
break;
default:
test_pr_err("%s: unexpected testcase %d",
__func__, mbtd->test_info.testcase);
break;
}
}
/*
* A callback assigned to the err_check_fn field of the mmc_request by the
* MMC/card/block layer.
* Called upon request completion by the MMC/core layer.
* Here we emulate an error return value from the card.
*/
static int test_err_check(struct mmc_card *card, struct mmc_async_req *areq)
{
struct mmc_queue_req *mq_rq = container_of(areq, struct mmc_queue_req,
mmc_active);
struct request_queue *req_q = test_iosched_get_req_queue();
struct mmc_queue *mq;
int max_packed_reqs;
int ret = 0;
struct mmc_blk_request *brq;
if (req_q)
mq = req_q->queuedata;
else {
test_pr_err("%s: NULL request_queue", __func__);
return 0;
}
if (!mq) {
test_pr_err("%s: %s: NULL mq", __func__,
mmc_hostname(card->host));
return 0;
}
max_packed_reqs = mq->card->ext_csd.max_packed_writes;
if (!mq_rq) {
test_pr_err("%s: %s: NULL mq_rq", __func__,
mmc_hostname(card->host));
return 0;
}
brq = &mq_rq->brq;
switch (mbtd->test_info.testcase) {
case TEST_RET_ABORT:
test_pr_info("%s: return abort", __func__);
ret = MMC_BLK_ABORT;
break;
case TEST_RET_PARTIAL_FOLLOWED_BY_SUCCESS:
test_pr_info("%s: return partial followed by success",
__func__);
/*
* Since in this testcase num_requests is always >= 2,
* we can be sure that packed_fail_idx is always >= 1
*/
mq_rq->packed_fail_idx = (mbtd->num_requests / 2);
test_pr_info("%s: packed_fail_idx = %d"
, __func__, mq_rq->packed_fail_idx);
mq->err_check_fn = NULL;
ret = MMC_BLK_PARTIAL;
break;
case TEST_RET_PARTIAL_FOLLOWED_BY_ABORT:
if (!mbtd->err_check_counter) {
test_pr_info("%s: return partial followed by abort",
__func__);
mbtd->err_check_counter++;
/*
* Since in this testcase num_requests is always >= 3,
* we have that packed_fail_idx is always >= 1
*/
mq_rq->packed_fail_idx = (mbtd->num_requests / 2);
test_pr_info("%s: packed_fail_idx = %d"
, __func__, mq_rq->packed_fail_idx);
ret = MMC_BLK_PARTIAL;
break;
}
mbtd->err_check_counter = 0;
mq->err_check_fn = NULL;
ret = MMC_BLK_ABORT;
break;
case TEST_RET_PARTIAL_MULTIPLE_UNTIL_SUCCESS:
test_pr_info("%s: return partial multiple until success",
__func__);
if (++mbtd->err_check_counter >= (mbtd->num_requests)) {
mq->err_check_fn = NULL;
mbtd->err_check_counter = 0;
ret = MMC_BLK_PARTIAL;
break;
}
mq_rq->packed_fail_idx = 1;
ret = MMC_BLK_PARTIAL;
break;
case TEST_RET_PARTIAL_MAX_FAIL_IDX:
test_pr_info("%s: return partial max fail_idx", __func__);
mq_rq->packed_fail_idx = max_packed_reqs - 1;
mq->err_check_fn = NULL;
ret = MMC_BLK_PARTIAL;
break;
case TEST_RET_RETRY:
test_pr_info("%s: return retry", __func__);
ret = MMC_BLK_RETRY;
break;
case TEST_RET_CMD_ERR:
test_pr_info("%s: return cmd err", __func__);
ret = MMC_BLK_CMD_ERR;
break;
case TEST_RET_DATA_ERR:
test_pr_info("%s: return data err", __func__);
ret = MMC_BLK_DATA_ERR;
break;
case BKOPS_URGENT_LEVEL_2:
case BKOPS_URGENT_LEVEL_3:
case BKOPS_URGENT_LEVEL_2_TWO_REQS:
if (mbtd->err_check_counter++ == 0) {
test_pr_info("%s: simulate an exception from the card",
__func__);
brq->cmd.resp[0] |= R1_EXCEPTION_EVENT;
}
mq->err_check_fn = NULL;
break;
default:
test_pr_err("%s: unexpected testcase %d",
__func__, mbtd->test_info.testcase);
}
return ret;
}
/*
* This is a specific implementation for the get_test_case_str_fn function
* pointer in the test_info data structure. Given a valid test_data instance,
* the function returns a string resembling the test name, based on the testcase
*/
static char *get_test_case_str(struct test_data *td)
{
if (!td) {
test_pr_err("%s: NULL td", __func__);
return NULL;
}
switch (td->test_info.testcase) {
case TEST_STOP_DUE_TO_FLUSH:
return "\"stop due to flush\"";
case TEST_STOP_DUE_TO_FLUSH_AFTER_MAX_REQS:
return "\"stop due to flush after max-1 reqs\"";
case TEST_STOP_DUE_TO_READ:
return "\"stop due to read\"";
case TEST_STOP_DUE_TO_READ_AFTER_MAX_REQS:
return "\"stop due to read after max-1 reqs\"";
case TEST_STOP_DUE_TO_EMPTY_QUEUE:
return "\"stop due to empty queue\"";
case TEST_STOP_DUE_TO_MAX_REQ_NUM:
return "\"stop due to max req num\"";
case TEST_STOP_DUE_TO_THRESHOLD:
return "\"stop due to exceeding threshold\"";
case TEST_RET_ABORT:
return "\"err_check return abort\"";
case TEST_RET_PARTIAL_FOLLOWED_BY_SUCCESS:
return "\"err_check return partial followed by success\"";
case TEST_RET_PARTIAL_FOLLOWED_BY_ABORT:
return "\"err_check return partial followed by abort\"";
case TEST_RET_PARTIAL_MULTIPLE_UNTIL_SUCCESS:
return "\"err_check return partial multiple until success\"";
case TEST_RET_PARTIAL_MAX_FAIL_IDX:
return "\"err_check return partial max fail index\"";
case TEST_RET_RETRY:
return "\"err_check return retry\"";
case TEST_RET_CMD_ERR:
return "\"err_check return cmd error\"";
case TEST_RET_DATA_ERR:
return "\"err_check return data error\"";
case TEST_HDR_INVALID_VERSION:
return "\"invalid - wrong header version\"";
case TEST_HDR_WRONG_WRITE_CODE:
return "\"invalid - wrong write code\"";
case TEST_HDR_INVALID_RW_CODE:
return "\"invalid - wrong R/W code\"";
case TEST_HDR_DIFFERENT_ADDRESSES:
return "\"invalid - header different addresses\"";
case TEST_HDR_REQ_NUM_SMALLER_THAN_ACTUAL:
return "\"invalid - header req num smaller than actual\"";
case TEST_HDR_REQ_NUM_LARGER_THAN_ACTUAL:
return "\"invalid - header req num larger than actual\"";
case TEST_HDR_CMD23_PACKED_BIT_SET:
return "\"invalid - header cmd23 packed bit set\"";
case TEST_CMD23_MAX_PACKED_WRITES:
return "\"invalid - cmd23 max packed writes\"";
case TEST_CMD23_ZERO_PACKED_WRITES:
return "\"invalid - cmd23 zero packed writes\"";
case TEST_CMD23_PACKED_BIT_UNSET:
return "\"invalid - cmd23 packed bit unset\"";
case TEST_CMD23_REL_WR_BIT_SET:
return "\"invalid - cmd23 rel wr bit set\"";
case TEST_CMD23_BITS_16TO29_SET:
return "\"invalid - cmd23 bits [16-29] set\"";
case TEST_CMD23_HDR_BLK_NOT_IN_COUNT:
return "\"invalid - cmd23 header block not in count\"";
case TEST_PACKING_EXP_N_OVER_TRIGGER:
return "\"packing control - pack n\"";
case TEST_PACKING_EXP_N_OVER_TRIGGER_FB_READ:
return "\"packing control - pack n followed by read\"";
case TEST_PACKING_EXP_N_OVER_TRIGGER_FLUSH_N:
return "\"packing control - pack n followed by flush\"";
case TEST_PACKING_EXP_ONE_OVER_TRIGGER_FB_READ:
return "\"packing control - pack one followed by read\"";
case TEST_PACKING_EXP_THRESHOLD_OVER_TRIGGER:
return "\"packing control - pack threshold\"";
case TEST_PACKING_NOT_EXP_LESS_THAN_TRIGGER_REQUESTS:
return "\"packing control - no packing\"";
case TEST_PACKING_NOT_EXP_TRIGGER_REQUESTS:
return "\"packing control - no packing, trigger requests\"";
case TEST_PACKING_NOT_EXP_TRIGGER_READ_TRIGGER:
return "\"packing control - no pack, trigger-read-trigger\"";
case TEST_PACKING_NOT_EXP_TRIGGER_FLUSH_TRIGGER:
return "\"packing control- no pack, trigger-flush-trigger\"";
case TEST_PACK_MIX_PACKED_NO_PACKED_PACKED:
return "\"packing control - mix: pack -> no pack -> pack\"";
case TEST_PACK_MIX_NO_PACKED_PACKED_NO_PACKED:
return "\"packing control - mix: no pack->pack->no pack\"";
case TEST_WRITE_DISCARD_SANITIZE_READ:
return "\"write, discard, sanitize\"";
case BKOPS_DELAYED_WORK_LEVEL_1:
return "\"delayed work BKOPS level 1\"";
case BKOPS_DELAYED_WORK_LEVEL_1_HPI:
return "\"delayed work BKOPS level 1 with HPI\"";
case BKOPS_CANCEL_DELAYED_WORK:
return "\"cancel delayed BKOPS work\"";
case BKOPS_URGENT_LEVEL_2:
return "\"urgent BKOPS level 2\"";
case BKOPS_URGENT_LEVEL_2_TWO_REQS:
return "\"urgent BKOPS level 2, followed by a request\"";
case BKOPS_URGENT_LEVEL_3:
return "\"urgent BKOPS level 3\"";
case TEST_LONG_SEQUENTIAL_READ:
return "\"long sequential read\"";
case TEST_LONG_SEQUENTIAL_WRITE:
return "\"long sequential write\"";
default:
return " Unknown testcase";
}
return NULL;
}
/*
* Compare individual testcase's statistics to the expected statistics:
* Compare stop reason and number of packing events
*/
static int check_wr_packing_statistics(struct test_data *td)
{
struct mmc_wr_pack_stats *mmc_packed_stats;
struct mmc_queue *mq = td->req_q->queuedata;
int max_packed_reqs = mq->card->ext_csd.max_packed_writes;
int i;
struct mmc_card *card = mq->card;
struct mmc_wr_pack_stats expected_stats;
int *stop_reason;
int ret = 0;
if (!mq) {
test_pr_err("%s: NULL mq", __func__);
return -EINVAL;
}
expected_stats = mbtd->exp_packed_stats;
mmc_packed_stats = mmc_blk_get_packed_statistics(card);
if (!mmc_packed_stats) {
test_pr_err("%s: NULL mmc_packed_stats", __func__);
return -EINVAL;
}
if (!mmc_packed_stats->packing_events) {
test_pr_err("%s: NULL packing_events", __func__);
return -EINVAL;
}
spin_lock(&mmc_packed_stats->lock);
if (!mmc_packed_stats->enabled) {
test_pr_err("%s write packing statistics are not enabled",
__func__);
ret = -EINVAL;
goto exit_err;
}
stop_reason = mmc_packed_stats->pack_stop_reason;
for (i = 1; i <= max_packed_reqs; ++i) {
if (mmc_packed_stats->packing_events[i] !=
expected_stats.packing_events[i]) {
test_pr_err(
"%s: Wrong pack stats in index %d, got %d, expected %d",
__func__, i, mmc_packed_stats->packing_events[i],
expected_stats.packing_events[i]);
if (td->fs_wr_reqs_during_test)
goto cancel_round;
ret = -EINVAL;
goto exit_err;
}
}
if (mmc_packed_stats->pack_stop_reason[EXCEEDS_SEGMENTS] !=
expected_stats.pack_stop_reason[EXCEEDS_SEGMENTS]) {
test_pr_err(
"%s: Wrong pack stop reason EXCEEDS_SEGMENTS %d, expected %d",
__func__, stop_reason[EXCEEDS_SEGMENTS],
expected_stats.pack_stop_reason[EXCEEDS_SEGMENTS]);
if (td->fs_wr_reqs_during_test)
goto cancel_round;
ret = -EINVAL;
goto exit_err;
}
if (mmc_packed_stats->pack_stop_reason[EXCEEDS_SECTORS] !=
expected_stats.pack_stop_reason[EXCEEDS_SECTORS]) {
test_pr_err(
"%s: Wrong pack stop reason EXCEEDS_SECTORS %d, expected %d",
__func__, stop_reason[EXCEEDS_SECTORS],
expected_stats.pack_stop_reason[EXCEEDS_SECTORS]);
if (td->fs_wr_reqs_during_test)
goto cancel_round;
ret = -EINVAL;
goto exit_err;
}
if (mmc_packed_stats->pack_stop_reason[WRONG_DATA_DIR] !=
expected_stats.pack_stop_reason[WRONG_DATA_DIR]) {
test_pr_err(
"%s: Wrong pack stop reason WRONG_DATA_DIR %d, expected %d",
__func__, stop_reason[WRONG_DATA_DIR],
expected_stats.pack_stop_reason[WRONG_DATA_DIR]);
if (td->fs_wr_reqs_during_test)
goto cancel_round;
ret = -EINVAL;
goto exit_err;
}
if (mmc_packed_stats->pack_stop_reason[FLUSH_OR_DISCARD] !=
expected_stats.pack_stop_reason[FLUSH_OR_DISCARD]) {
test_pr_err(
"%s: Wrong pack stop reason FLUSH_OR_DISCARD %d, expected %d",
__func__, stop_reason[FLUSH_OR_DISCARD],
expected_stats.pack_stop_reason[FLUSH_OR_DISCARD]);
if (td->fs_wr_reqs_during_test)
goto cancel_round;
ret = -EINVAL;
goto exit_err;
}
if (mmc_packed_stats->pack_stop_reason[EMPTY_QUEUE] !=
expected_stats.pack_stop_reason[EMPTY_QUEUE]) {
test_pr_err(
"%s: Wrong pack stop reason EMPTY_QUEUE %d, expected %d",
__func__, stop_reason[EMPTY_QUEUE],
expected_stats.pack_stop_reason[EMPTY_QUEUE]);
if (td->fs_wr_reqs_during_test)
goto cancel_round;
ret = -EINVAL;
goto exit_err;
}
if (mmc_packed_stats->pack_stop_reason[REL_WRITE] !=
expected_stats.pack_stop_reason[REL_WRITE]) {
test_pr_err(
"%s: Wrong pack stop reason REL_WRITE %d, expected %d",
__func__, stop_reason[REL_WRITE],
expected_stats.pack_stop_reason[REL_WRITE]);
if (td->fs_wr_reqs_during_test)
goto cancel_round;
ret = -EINVAL;
goto exit_err;
}
exit_err:
spin_unlock(&mmc_packed_stats->lock);
if (ret && mmc_packed_stats->enabled)
print_mmc_packing_stats(card);
return ret;
cancel_round:
spin_unlock(&mmc_packed_stats->lock);
test_iosched_set_ignore_round(true);
return 0;
}
/*
* Pseudo-randomly choose a seed based on the last seed, and update it in
* seed_number. then return seed_number (mod max_val), or min_val.
*/
static unsigned int pseudo_random_seed(unsigned int *seed_number,
unsigned int min_val,
unsigned int max_val)
{
int ret = 0;
if (!seed_number)
return 0;
*seed_number = ((unsigned int)(((unsigned long)*seed_number *
(unsigned long)LARGE_PRIME_1) + LARGE_PRIME_2));
ret = (unsigned int)((*seed_number) % max_val);
return (ret > min_val ? ret : min_val);
}
/*
* Given a pseudo-random seed, find a pseudo-random num_of_bios.
* Make sure that num_of_bios is not larger than TEST_MAX_SECTOR_RANGE
*/
static void pseudo_rnd_num_of_bios(unsigned int *num_bios_seed,
unsigned int *num_of_bios)
{
do {
*num_of_bios = pseudo_random_seed(num_bios_seed, 1,
TEST_MAX_BIOS_PER_REQ);
if (!(*num_of_bios))
*num_of_bios = 1;
} while ((*num_of_bios) * BIO_U32_SIZE * 4 > TEST_MAX_SECTOR_RANGE);
}
/* Add a single read request to the given td's request queue */
static int prepare_request_add_read(struct test_data *td)
{
int ret;
int start_sec;
if (td)
start_sec = td->start_sector;
else {
test_pr_err("%s: NULL td", __func__);
return 0;
}
test_pr_info("%s: Adding a read request, first req_id=%d", __func__,
td->wr_rd_next_req_id);
ret = test_iosched_add_wr_rd_test_req(0, READ, start_sec, 2,
TEST_PATTERN_5A, NULL);
if (ret) {
test_pr_err("%s: failed to add a read request", __func__);
return ret;
}
return 0;
}
/* Add a single flush request to the given td's request queue */
static int prepare_request_add_flush(struct test_data *td)
{
int ret;
if (!td) {
test_pr_err("%s: NULL td", __func__);
return 0;
}
test_pr_info("%s: Adding a flush request, first req_id=%d", __func__,
td->unique_next_req_id);
ret = test_iosched_add_unique_test_req(0, REQ_UNIQUE_FLUSH,
0, 0, NULL);
if (ret) {
test_pr_err("%s: failed to add a flush request", __func__);
return ret;
}
return ret;
}
/*
* Add num_requets amount of write requests to the given td's request queue.
* If random test mode is chosen we pseudo-randomly choose the number of bios
* for each write request, otherwise add between 1 to 5 bio per request.
*/
static int prepare_request_add_write_reqs(struct test_data *td,
int num_requests, int is_err_expected,
int is_random)
{
int i;
unsigned int start_sec;
int num_bios;
int ret = 0;
unsigned int *bio_seed = &mbtd->random_test_seed;
if (td)
start_sec = td->start_sector;
else {
test_pr_err("%s: NULL td", __func__);
return ret;
}
test_pr_info("%s: Adding %d write requests, first req_id=%d", __func__,
num_requests, td->wr_rd_next_req_id);
for (i = 1 ; i <= num_requests ; i++) {
start_sec =
td->start_sector + sizeof(int) *
BIO_U32_SIZE * td->num_of_write_bios;
if (is_random)
pseudo_rnd_num_of_bios(bio_seed, &num_bios);
else
/*
* For the non-random case, give num_bios a value
* between 1 and 5, to keep a small number of BIOs
*/
num_bios = (i%5)+1;
ret = test_iosched_add_wr_rd_test_req(is_err_expected, WRITE,
start_sec, num_bios, TEST_PATTERN_5A, NULL);
if (ret) {
test_pr_err("%s: failed to add a write request",
__func__);
return ret;
}
}
return 0;
}
/*
* Prepare the write, read and flush requests for a generic packed commands
* testcase
*/
static int prepare_packed_requests(struct test_data *td, int is_err_expected,
int num_requests, int is_random)
{
int ret = 0;
struct mmc_queue *mq;
int max_packed_reqs;
struct request_queue *req_q;
if (!td) {
pr_err("%s: NULL td", __func__);
return -EINVAL;
}
req_q = td->req_q;
if (!req_q) {
pr_err("%s: NULL request queue", __func__);
return -EINVAL;
}
mq = req_q->queuedata;
if (!mq) {
test_pr_err("%s: NULL mq", __func__);
return -EINVAL;
}
max_packed_reqs = mq->card->ext_csd.max_packed_writes;
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);
}
mmc_blk_init_packed_statistics(mq->card);
ret = prepare_request_add_write_reqs(td, num_requests, is_err_expected,
is_random);
if (ret)
return ret;
/* Avoid memory corruption in upcoming stats set */
if (td->test_info.testcase == TEST_STOP_DUE_TO_THRESHOLD)
num_requests--;
memset((void *)mbtd->exp_packed_stats.pack_stop_reason, 0,
sizeof(mbtd->exp_packed_stats.pack_stop_reason));
memset(mbtd->exp_packed_stats.packing_events, 0,
(max_packed_reqs + 1) * sizeof(u32));
if (num_requests <= max_packed_reqs)
mbtd->exp_packed_stats.packing_events[num_requests] = 1;
switch (td->test_info.testcase) {
case TEST_STOP_DUE_TO_FLUSH:
case TEST_STOP_DUE_TO_FLUSH_AFTER_MAX_REQS:
ret = prepare_request_add_flush(td);
if (ret)
return ret;
mbtd->exp_packed_stats.pack_stop_reason[FLUSH_OR_DISCARD] = 1;
break;
case TEST_STOP_DUE_TO_READ:
case TEST_STOP_DUE_TO_READ_AFTER_MAX_REQS:
ret = prepare_request_add_read(td);
if (ret)
return ret;
mbtd->exp_packed_stats.pack_stop_reason[WRONG_DATA_DIR] = 1;
break;
case TEST_STOP_DUE_TO_THRESHOLD:
mbtd->exp_packed_stats.packing_events[num_requests] = 1;
mbtd->exp_packed_stats.packing_events[1] = 1;
mbtd->exp_packed_stats.pack_stop_reason[THRESHOLD] = 1;
mbtd->exp_packed_stats.pack_stop_reason[EMPTY_QUEUE] = 1;
break;
case TEST_STOP_DUE_TO_MAX_REQ_NUM:
case TEST_RET_PARTIAL_MAX_FAIL_IDX:
mbtd->exp_packed_stats.pack_stop_reason[THRESHOLD] = 1;
break;
default:
mbtd->exp_packed_stats.pack_stop_reason[EMPTY_QUEUE] = 1;
}
mbtd->num_requests = num_requests;
return 0;
}
/*
* Prepare the write, read and flush requests for the packing control
* testcases
*/
static int prepare_packed_control_tests_requests(struct test_data *td,
int is_err_expected, int num_requests, int is_random)
{
int ret = 0;
struct mmc_queue *mq;
int max_packed_reqs;
int temp_num_req = num_requests;
struct request_queue *req_q;
int test_packed_trigger;
int num_packed_reqs;
if (!td) {
test_pr_err("%s: NULL td\n", __func__);
return -EINVAL;
}
req_q = td->req_q;
if (!req_q) {
test_pr_err("%s: NULL request queue\n", __func__);
return -EINVAL;
}
mq = req_q->queuedata;
if (!mq) {
test_pr_err("%s: NULL mq", __func__);
return -EINVAL;
}
max_packed_reqs = mq->card->ext_csd.max_packed_writes;
test_packed_trigger = mq->num_wr_reqs_to_start_packing;
num_packed_reqs = num_requests - test_packed_trigger;
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);
}
mmc_blk_init_packed_statistics(mq->card);
if (td->test_info.testcase ==
TEST_PACK_MIX_NO_PACKED_PACKED_NO_PACKED) {
temp_num_req = num_requests;
num_requests = test_packed_trigger - 1;
}
/* Verify that the packing is disabled before starting the test */
mq->wr_packing_enabled = false;
mq->num_of_potential_packed_wr_reqs = 0;
if (td->test_info.testcase == TEST_PACK_MIX_PACKED_NO_PACKED_PACKED) {
mq->num_of_potential_packed_wr_reqs = test_packed_trigger + 1;
mq->wr_packing_enabled = true;
num_requests = test_packed_trigger + 2;
}
ret = prepare_request_add_write_reqs(td, num_requests, is_err_expected,
is_random);
if (ret)
goto exit;
if (td->test_info.testcase == TEST_PACK_MIX_NO_PACKED_PACKED_NO_PACKED)
num_requests = temp_num_req;
memset((void *)mbtd->exp_packed_stats.pack_stop_reason, 0,
sizeof(mbtd->exp_packed_stats.pack_stop_reason));
memset(mbtd->exp_packed_stats.packing_events, 0,
(max_packed_reqs + 1) * sizeof(u32));
switch (td->test_info.testcase) {
case TEST_PACKING_EXP_N_OVER_TRIGGER_FB_READ:
case TEST_PACKING_EXP_ONE_OVER_TRIGGER_FB_READ:
ret = prepare_request_add_read(td);
if (ret)
goto exit;
mbtd->exp_packed_stats.pack_stop_reason[WRONG_DATA_DIR] = 1;
mbtd->exp_packed_stats.packing_events[num_packed_reqs] = 1;
break;
case TEST_PACKING_EXP_N_OVER_TRIGGER_FLUSH_N:
ret = prepare_request_add_flush(td);
if (ret)
goto exit;
ret = prepare_request_add_write_reqs(td, num_packed_reqs,
is_err_expected, is_random);
if (ret)
goto exit;
mbtd->exp_packed_stats.pack_stop_reason[EMPTY_QUEUE] = 1;
mbtd->exp_packed_stats.pack_stop_reason[FLUSH_OR_DISCARD] = 1;
mbtd->exp_packed_stats.packing_events[num_packed_reqs] = 2;
break;
case TEST_PACKING_NOT_EXP_TRIGGER_READ_TRIGGER:
ret = prepare_request_add_read(td);
if (ret)
goto exit;
ret = prepare_request_add_write_reqs(td, test_packed_trigger,
is_err_expected, is_random);
if (ret)
goto exit;
mbtd->exp_packed_stats.packing_events[num_packed_reqs] = 1;
break;
case TEST_PACKING_NOT_EXP_TRIGGER_FLUSH_TRIGGER:
ret = prepare_request_add_flush(td);
if (ret)
goto exit;
ret = prepare_request_add_write_reqs(td, test_packed_trigger,
is_err_expected, is_random);
if (ret)
goto exit;
mbtd->exp_packed_stats.packing_events[num_packed_reqs] = 1;
break;
case TEST_PACK_MIX_PACKED_NO_PACKED_PACKED:
ret = prepare_request_add_read(td);
if (ret)
goto exit;
ret = prepare_request_add_write_reqs(td, test_packed_trigger-1,
is_err_expected, is_random);
if (ret)
goto exit;
ret = prepare_request_add_write_reqs(td, num_requests,
is_err_expected, is_random);
if (ret)
goto exit;
mbtd->exp_packed_stats.packing_events[num_requests] = 1;
mbtd->exp_packed_stats.packing_events[num_requests-1] = 1;
mbtd->exp_packed_stats.pack_stop_reason[WRONG_DATA_DIR] = 1;
mbtd->exp_packed_stats.pack_stop_reason[EMPTY_QUEUE] = 1;
break;
case TEST_PACK_MIX_NO_PACKED_PACKED_NO_PACKED:
ret = prepare_request_add_read(td);
if (ret)
goto exit;
ret = prepare_request_add_write_reqs(td, num_requests,
is_err_expected, is_random);
if (ret)
goto exit;
ret = prepare_request_add_read(td);
if (ret)
goto exit;
ret = prepare_request_add_write_reqs(td, test_packed_trigger-1,
is_err_expected, is_random);
if (ret)
goto exit;
mbtd->exp_packed_stats.pack_stop_reason[WRONG_DATA_DIR] = 1;
mbtd->exp_packed_stats.packing_events[num_packed_reqs] = 1;
break;
case TEST_PACKING_NOT_EXP_LESS_THAN_TRIGGER_REQUESTS:
case TEST_PACKING_NOT_EXP_TRIGGER_REQUESTS:
mbtd->exp_packed_stats.packing_events[num_packed_reqs] = 1;
break;
default:
mbtd->exp_packed_stats.pack_stop_reason[EMPTY_QUEUE] = 1;
mbtd->exp_packed_stats.packing_events[num_packed_reqs] = 1;
}
mbtd->num_requests = num_requests;
exit:
return ret;
}
/*
* Prepare requests for the TEST_RET_PARTIAL_FOLLOWED_BY_ABORT testcase.
* In this testcase we have mixed error expectations from different
* write requests, hence the special prepare function.
*/
static int prepare_partial_followed_by_abort(struct test_data *td,
int num_requests)
{
int i, start_address;
int is_err_expected = 0;
int ret = 0;
struct mmc_queue *mq = test_iosched_get_req_queue()->queuedata;
int max_packed_reqs;
if (!mq) {
test_pr_err("%s: NULL mq", __func__);
return -EINVAL;
}
max_packed_reqs = mq->card->ext_csd.max_packed_writes;
mmc_blk_init_packed_statistics(mq->card);
for (i = 1; i <= num_requests; i++) {
if (i > (num_requests / 2))
is_err_expected = 1;
start_address = td->start_sector +
sizeof(int) * BIO_U32_SIZE * td->num_of_write_bios;
ret = test_iosched_add_wr_rd_test_req(is_err_expected, WRITE,
start_address, (i % 5) + 1, TEST_PATTERN_5A,
NULL);
if (ret) {
test_pr_err("%s: failed to add a write request",
__func__);
return ret;
}
}
memset((void *)&mbtd->exp_packed_stats.pack_stop_reason, 0,
sizeof(mbtd->exp_packed_stats.pack_stop_reason));
memset(mbtd->exp_packed_stats.packing_events, 0,
(max_packed_reqs + 1) * sizeof(u32));
mbtd->exp_packed_stats.packing_events[num_requests] = 1;
mbtd->exp_packed_stats.pack_stop_reason[EMPTY_QUEUE] = 1;
mbtd->num_requests = num_requests;
return ret;
}
/*
* Get number of write requests for current testcase. If random test mode was
* chosen, pseudo-randomly choose the number of requests, otherwise set to
* two less than the packing threshold.
*/
static int get_num_requests(struct test_data *td)
{
int *seed = &mbtd->random_test_seed;
struct request_queue *req_q;
struct mmc_queue *mq;
int max_num_requests;
int num_requests;
int min_num_requests = 2;
int is_random = mbtd->is_random;
int max_for_double;
int test_packed_trigger;
req_q = test_iosched_get_req_queue();
if (req_q)
mq = req_q->queuedata;
else {
test_pr_err("%s: NULL request queue", __func__);
return 0;
}
if (!mq) {
test_pr_err("%s: NULL mq", __func__);
return -EINVAL;
}
max_num_requests = mq->card->ext_csd.max_packed_writes;
num_requests = max_num_requests - 2;
test_packed_trigger = mq->num_wr_reqs_to_start_packing;
/*
* Here max_for_double is intended for packed control testcases
* in which we issue many write requests. It's purpose is to prevent
* exceeding max number of req_queue requests.
*/
max_for_double = max_num_requests - 10;
if (td->test_info.testcase ==
TEST_PACKING_NOT_EXP_LESS_THAN_TRIGGER_REQUESTS)
/* Don't expect packing, so issue up to trigger-1 reqs */
num_requests = test_packed_trigger - 1;
if (is_random) {
if (td->test_info.testcase ==
TEST_RET_PARTIAL_FOLLOWED_BY_ABORT)
/*
* Here we don't want num_requests to be less than 1
* as a consequence of division by 2.
*/
min_num_requests = 3;
if (td->test_info.testcase ==
TEST_PACKING_NOT_EXP_LESS_THAN_TRIGGER_REQUESTS)
/* Don't expect packing, so issue up to trigger reqs */
max_num_requests = test_packed_trigger;
num_requests = pseudo_random_seed(seed, min_num_requests,
max_num_requests - 1);
}
if (td->test_info.testcase ==
TEST_PACKING_NOT_EXP_LESS_THAN_TRIGGER_REQUESTS)
num_requests -= test_packed_trigger;
if (td->test_info.testcase == TEST_PACKING_EXP_N_OVER_TRIGGER_FLUSH_N)
num_requests =
num_requests > max_for_double ? max_for_double : num_requests;
if (mbtd->test_group == TEST_PACKING_CONTROL_GROUP)
num_requests += test_packed_trigger;
if (td->test_info.testcase == TEST_PACKING_NOT_EXP_TRIGGER_REQUESTS)
num_requests = test_packed_trigger;
return num_requests;
}
static int prepare_long_test_requests(struct test_data *td)
{
int ret;
int start_sec;
int j;
int test_direction;
if (td)
start_sec = td->start_sector;
else {
test_pr_err("%s: NULL td\n", __func__);
return -EINVAL;
}
if (td->test_info.testcase == TEST_LONG_SEQUENTIAL_WRITE)
test_direction = WRITE;
else
test_direction = READ;
test_pr_info("%s: Adding %d write requests, first req_id=%d", __func__,
LONG_TEST_ACTUAL_NUM_REQS, td->wr_rd_next_req_id);
for (j = 0; j < LONG_TEST_ACTUAL_NUM_REQS; j++) {
ret = test_iosched_add_wr_rd_test_req(0, test_direction,
start_sec,
TEST_MAX_BIOS_PER_REQ,
TEST_NO_PATTERN, NULL);
if (ret) {
test_pr_err("%s: failed to add a bio request",
__func__);
return ret;
}
start_sec +=
(TEST_MAX_BIOS_PER_REQ * sizeof(int) * BIO_U32_SIZE);
}
return 0;
}
/*
* An implementation for the prepare_test_fn pointer in the test_info
* data structure. According to the testcase we add the right number of requests
* and decide if an error is expected or not.
*/
static int prepare_test(struct test_data *td)
{
struct mmc_queue *mq = test_iosched_get_req_queue()->queuedata;
int max_num_requests;
int num_requests = 0;
int ret = 0;
int is_random = mbtd->is_random;
int test_packed_trigger = mq->num_wr_reqs_to_start_packing;
if (!mq) {
test_pr_err("%s: NULL mq", __func__);
return -EINVAL;
}
max_num_requests = mq->card->ext_csd.max_packed_writes;
if (is_random && 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_requests = get_num_requests(td);
if (mbtd->test_group == TEST_SEND_INVALID_GROUP)
mq->packed_test_fn =
test_invalid_packed_cmd;
if (mbtd->test_group == TEST_ERR_CHECK_GROUP)
mq->err_check_fn = test_err_check;
switch (td->test_info.testcase) {
case TEST_STOP_DUE_TO_FLUSH:
case TEST_STOP_DUE_TO_READ:
case TEST_RET_PARTIAL_FOLLOWED_BY_SUCCESS:
case TEST_RET_PARTIAL_MULTIPLE_UNTIL_SUCCESS:
case TEST_STOP_DUE_TO_EMPTY_QUEUE:
case TEST_CMD23_PACKED_BIT_UNSET:
ret = prepare_packed_requests(td, 0, num_requests, is_random);
break;
case TEST_STOP_DUE_TO_FLUSH_AFTER_MAX_REQS:
case TEST_STOP_DUE_TO_READ_AFTER_MAX_REQS:
ret = prepare_packed_requests(td, 0, max_num_requests - 1,
is_random);
break;
case TEST_RET_PARTIAL_FOLLOWED_BY_ABORT:
ret = prepare_partial_followed_by_abort(td, num_requests);
break;
case TEST_STOP_DUE_TO_MAX_REQ_NUM:
case TEST_RET_PARTIAL_MAX_FAIL_IDX:
ret = prepare_packed_requests(td, 0, max_num_requests,
is_random);
break;
case TEST_STOP_DUE_TO_THRESHOLD:
ret = prepare_packed_requests(td, 0, max_num_requests + 1,
is_random);
break;
case TEST_RET_ABORT:
case TEST_RET_RETRY:
case TEST_RET_CMD_ERR:
case TEST_RET_DATA_ERR:
case TEST_HDR_INVALID_VERSION:
case TEST_HDR_WRONG_WRITE_CODE:
case TEST_HDR_INVALID_RW_CODE:
case TEST_HDR_DIFFERENT_ADDRESSES:
case TEST_HDR_REQ_NUM_SMALLER_THAN_ACTUAL:
case TEST_HDR_REQ_NUM_LARGER_THAN_ACTUAL:
case TEST_CMD23_MAX_PACKED_WRITES:
case TEST_CMD23_ZERO_PACKED_WRITES:
case TEST_CMD23_REL_WR_BIT_SET:
case TEST_CMD23_BITS_16TO29_SET:
case TEST_CMD23_HDR_BLK_NOT_IN_COUNT:
case TEST_HDR_CMD23_PACKED_BIT_SET:
ret = prepare_packed_requests(td, 1, num_requests, is_random);
break;
case TEST_PACKING_EXP_N_OVER_TRIGGER:
case TEST_PACKING_EXP_N_OVER_TRIGGER_FB_READ:
case TEST_PACKING_NOT_EXP_TRIGGER_REQUESTS:
case TEST_PACKING_NOT_EXP_LESS_THAN_TRIGGER_REQUESTS:
case TEST_PACK_MIX_PACKED_NO_PACKED_PACKED:
case TEST_PACK_MIX_NO_PACKED_PACKED_NO_PACKED:
ret = prepare_packed_control_tests_requests(td, 0, num_requests,
is_random);
break;
case TEST_PACKING_EXP_THRESHOLD_OVER_TRIGGER:
ret = prepare_packed_control_tests_requests(td, 0,
max_num_requests, is_random);
break;
case TEST_PACKING_EXP_ONE_OVER_TRIGGER_FB_READ:
ret = prepare_packed_control_tests_requests(td, 0,
test_packed_trigger + 1,
is_random);
break;
case TEST_PACKING_EXP_N_OVER_TRIGGER_FLUSH_N:
ret = prepare_packed_control_tests_requests(td, 0, num_requests,
is_random);
break;
case TEST_PACKING_NOT_EXP_TRIGGER_READ_TRIGGER:
case TEST_PACKING_NOT_EXP_TRIGGER_FLUSH_TRIGGER:
ret = prepare_packed_control_tests_requests(td, 0,
test_packed_trigger, is_random);
break;
case TEST_LONG_SEQUENTIAL_WRITE:
ret = prepare_long_test_requests(td);
break;
case TEST_LONG_SEQUENTIAL_READ:
ret = prepare_long_test_requests(td);
break;
default:
test_pr_info("%s: Invalid test case...", __func__);
ret = -EINVAL;
}
return ret;
}
/*
* An implementation for the post_test_fn in the test_info data structure.
* In our case we just reset the function pointers in the mmc_queue in order for
* the FS to be able to dispatch it's requests correctly after the test is
* finished.
*/
static int post_test(struct test_data *td)
{
struct mmc_queue *mq;
if (!td)
return -EINVAL;
mq = td->req_q->queuedata;
if (!mq) {
test_pr_err("%s: NULL mq", __func__);
return -EINVAL;
}
mq->packed_test_fn = NULL;
mq->err_check_fn = NULL;
return 0;
}
/*
* This function checks, based on the current test's test_group, that the
* packed commands capability and control are set right. In addition, we check
* if the card supports the packed command feature.
*/
static int validate_packed_commands_settings(void)
{
struct request_queue *req_q;
struct mmc_queue *mq;
int max_num_requests;
struct mmc_host *host;
req_q = test_iosched_get_req_queue();
if (!req_q) {
test_pr_err("%s: test_iosched_get_req_queue failed", __func__);
test_iosched_set_test_result(TEST_FAILED);
return -EINVAL;
}
mq = req_q->queuedata;
if (!mq) {
test_pr_err("%s: NULL mq", __func__);
return -EINVAL;
}
max_num_requests = mq->card->ext_csd.max_packed_writes;
host = mq->card->host;
if (!(host->caps2 && MMC_CAP2_PACKED_WR)) {
test_pr_err("%s: Packed Write capability disabled, exit test",
__func__);
test_iosched_set_test_result(TEST_NOT_SUPPORTED);
return -EINVAL;
}
if (max_num_requests == 0) {
test_pr_err(
"%s: no write packing support, ext_csd.max_packed_writes=%d",
__func__, mq->card->ext_csd.max_packed_writes);
test_iosched_set_test_result(TEST_NOT_SUPPORTED);
return -EINVAL;
}
test_pr_info("%s: max number of packed requests supported is %d ",
__func__, max_num_requests);
switch (mbtd->test_group) {
case TEST_SEND_WRITE_PACKING_GROUP:
case TEST_ERR_CHECK_GROUP:
case TEST_SEND_INVALID_GROUP:
/* disable the packing control */
host->caps2 &= ~MMC_CAP2_PACKED_WR_CONTROL;
break;
case TEST_PACKING_CONTROL_GROUP:
host->caps2 |= MMC_CAP2_PACKED_WR_CONTROL;
break;
default:
break;
}
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;
}
/*
* Post test operations for BKOPs test
* Disable the BKOPs statistics and clear the feature flags
*/
static int bkops_post_test(struct test_data *td)
{
struct request_queue *q = td->req_q;
struct mmc_queue *mq = (struct mmc_queue *)q->queuedata;
struct mmc_card *card = mq->card;
mmc_card_clr_doing_bkops(mq->card);
card->ext_csd.raw_bkops_status = 0;
spin_lock(&card->bkops_info.bkops_stats.lock);
card->bkops_info.bkops_stats.enabled = false;
spin_unlock(&card->bkops_info.bkops_stats.lock);
return 0;
}
/*
* Verify the BKOPs statsistics
*/
static int check_bkops_result(struct test_data *td)
{
struct request_queue *q = td->req_q;
struct mmc_queue *mq = (struct mmc_queue *)q->queuedata;
struct mmc_card *card = mq->card;
struct mmc_bkops_stats *bkops_stat;
if (!card)
goto fail;
bkops_stat = &card->bkops_info.bkops_stats;
test_pr_info("%s: Test results: bkops:(%d,%d,%d) hpi:%d, suspend:%d",
__func__,
bkops_stat->bkops_level[BKOPS_SEVERITY_1_INDEX],
bkops_stat->bkops_level[BKOPS_SEVERITY_2_INDEX],
bkops_stat->bkops_level[BKOPS_SEVERITY_3_INDEX],
bkops_stat->hpi,
bkops_stat->suspend);
switch (mbtd->test_info.testcase) {
case BKOPS_DELAYED_WORK_LEVEL_1:
if ((bkops_stat->bkops_level[BKOPS_SEVERITY_1_INDEX] == 1) &&
(bkops_stat->suspend == 1) &&
(bkops_stat->hpi == 0))
goto exit;
else
goto fail;
break;
case BKOPS_DELAYED_WORK_LEVEL_1_HPI:
if ((bkops_stat->bkops_level[BKOPS_SEVERITY_1_INDEX] == 1) &&
(bkops_stat->suspend == 0) &&
(bkops_stat->hpi == 1))
goto exit;
/* this might happen due to timing issues */
else if
((bkops_stat->bkops_level[BKOPS_SEVERITY_1_INDEX] == 0) &&
(bkops_stat->suspend == 0) &&
(bkops_stat->hpi == 0))
goto ignore;
else
goto fail;
break;
case BKOPS_CANCEL_DELAYED_WORK:
if ((bkops_stat->bkops_level[BKOPS_SEVERITY_1_INDEX] == 0) &&
(bkops_stat->bkops_level[BKOPS_SEVERITY_2_INDEX] == 0) &&
(bkops_stat->bkops_level[BKOPS_SEVERITY_3_INDEX] == 0) &&
(bkops_stat->suspend == 0) &&
(bkops_stat->hpi == 0))
goto exit;
else
goto fail;
case BKOPS_URGENT_LEVEL_2:
case BKOPS_URGENT_LEVEL_2_TWO_REQS:
if ((bkops_stat->bkops_level[BKOPS_SEVERITY_2_INDEX] == 1) &&
(bkops_stat->suspend == 0) &&
(bkops_stat->hpi == 0))
goto exit;
else
goto fail;
case BKOPS_URGENT_LEVEL_3:
if ((bkops_stat->bkops_level[BKOPS_SEVERITY_3_INDEX] == 1) &&
(bkops_stat->suspend == 0) &&
(bkops_stat->hpi == 0))
goto exit;
else
goto fail;
default:
return -EINVAL;
}
exit:
return 0;
ignore:
test_iosched_set_ignore_round(true);
return 0;
fail:
if (td->fs_wr_reqs_during_test) {
test_pr_info("%s: wr reqs during test, cancel the round",
__func__);
test_iosched_set_ignore_round(true);
return 0;
}
test_pr_info("%s: BKOPs statistics are not as expected, test failed",
__func__);
return -EINVAL;
}
static void bkops_end_io_final_fn(struct request *rq, int err)
{
struct test_request *test_rq =
(struct test_request *)rq->elv.priv[0];
BUG_ON(!test_rq);
test_rq->req_completed = 1;
test_rq->req_result = err;
test_pr_info("%s: request %d completed, err=%d",
__func__, test_rq->req_id, err);
mbtd->bkops_stage = BKOPS_STAGE_4;
wake_up(&mbtd->bkops_wait_q);
}
static void bkops_end_io_fn(struct request *rq, int err)
{
struct test_request *test_rq =
(struct test_request *)rq->elv.priv[0];
BUG_ON(!test_rq);
test_rq->req_completed = 1;
test_rq->req_result = err;
test_pr_info("%s: request %d completed, err=%d",
__func__, test_rq->req_id, err);
mbtd->bkops_stage = BKOPS_STAGE_2;
wake_up(&mbtd->bkops_wait_q);
}
static int prepare_bkops(struct test_data *td)
{
int ret = 0;
struct request_queue *q = td->req_q;
struct mmc_queue *mq = (struct mmc_queue *)q->queuedata;
struct mmc_card *card = mq->card;
struct mmc_bkops_stats *bkops_stat;
if (!card)
return -EINVAL;
bkops_stat = &card->bkops_info.bkops_stats;
if (!card->ext_csd.bkops_en) {
test_pr_err("%s: BKOPS is not enabled by card or host)",
__func__);
return -ENOTSUPP;
}
if (mmc_card_doing_bkops(card)) {
test_pr_err("%s: BKOPS in progress, try later", __func__);
return -EAGAIN;
}
mmc_blk_init_bkops_statistics(card);
if ((mbtd->test_info.testcase == BKOPS_URGENT_LEVEL_2) ||
(mbtd->test_info.testcase == BKOPS_URGENT_LEVEL_2_TWO_REQS) ||
(mbtd->test_info.testcase == BKOPS_URGENT_LEVEL_3))
mq->err_check_fn = test_err_check;
mbtd->err_check_counter = 0;
return ret;
}
static int run_bkops(struct test_data *td)
{
int ret = 0;
struct request_queue *q = td->req_q;
struct mmc_queue *mq = (struct mmc_queue *)q->queuedata;
struct mmc_card *card = mq->card;
struct mmc_bkops_stats *bkops_stat;
if (!card)
return -EINVAL;
bkops_stat = &card->bkops_info.bkops_stats;
switch (mbtd->test_info.testcase) {
case BKOPS_DELAYED_WORK_LEVEL_1:
bkops_stat->ignore_card_bkops_status = true;
card->ext_csd.raw_bkops_status = 1;
card->bkops_info.sectors_changed =
card->bkops_info.min_sectors_to_queue_delayed_work + 1;
mbtd->bkops_stage = BKOPS_STAGE_1;
__blk_run_queue(q);
/* this long sleep makes sure the host starts bkops and
also, gets into suspend */
msleep(10000);
bkops_stat->ignore_card_bkops_status = false;
card->ext_csd.raw_bkops_status = 0;
test_iosched_mark_test_completion();
break;
case BKOPS_DELAYED_WORK_LEVEL_1_HPI:
bkops_stat->ignore_card_bkops_status = true;
card->ext_csd.raw_bkops_status = 1;
card->bkops_info.sectors_changed =
card->bkops_info.min_sectors_to_queue_delayed_work + 1;
mbtd->bkops_stage = BKOPS_STAGE_1;
__blk_run_queue(q);
msleep(card->bkops_info.delay_ms);
ret = test_iosched_add_wr_rd_test_req(0, WRITE,
td->start_sector,
TEST_REQUEST_NUM_OF_BIOS,
TEST_PATTERN_5A,
bkops_end_io_final_fn);
if (ret) {
test_pr_err("%s: failed to add a write request",
__func__);
ret = -EINVAL;
break;
}
__blk_run_queue(q);
wait_event(mbtd->bkops_wait_q,
mbtd->bkops_stage == BKOPS_STAGE_4);
bkops_stat->ignore_card_bkops_status = false;
test_iosched_mark_test_completion();
break;
case BKOPS_CANCEL_DELAYED_WORK:
bkops_stat->ignore_card_bkops_status = true;
card->ext_csd.raw_bkops_status = 1;
card->bkops_info.sectors_changed =
card->bkops_info.min_sectors_to_queue_delayed_work + 1;
mbtd->bkops_stage = BKOPS_STAGE_1;
__blk_run_queue(q);
ret = test_iosched_add_wr_rd_test_req(0, WRITE,
td->start_sector,
TEST_REQUEST_NUM_OF_BIOS,
TEST_PATTERN_5A,
bkops_end_io_final_fn);
if (ret) {
test_pr_err("%s: failed to add a write request",
__func__);
ret = -EINVAL;
break;
}
__blk_run_queue(q);
wait_event(mbtd->bkops_wait_q,
mbtd->bkops_stage == BKOPS_STAGE_4);
bkops_stat->ignore_card_bkops_status = false;
test_iosched_mark_test_completion();
break;
case BKOPS_URGENT_LEVEL_2:
case BKOPS_URGENT_LEVEL_3:
bkops_stat->ignore_card_bkops_status = true;
if (mbtd->test_info.testcase == BKOPS_URGENT_LEVEL_2)
card->ext_csd.raw_bkops_status = 2;
else
card->ext_csd.raw_bkops_status = 3;
mbtd->bkops_stage = BKOPS_STAGE_1;
ret = test_iosched_add_wr_rd_test_req(0, WRITE,
td->start_sector,
TEST_REQUEST_NUM_OF_BIOS,
TEST_PATTERN_5A,
bkops_end_io_fn);
if (ret) {
test_pr_err("%s: failed to add a write request",
__func__);
ret = -EINVAL;
break;
}
__blk_run_queue(q);
wait_event(mbtd->bkops_wait_q,
mbtd->bkops_stage == BKOPS_STAGE_2);
card->ext_csd.raw_bkops_status = 0;
ret = test_iosched_add_wr_rd_test_req(0, WRITE,
td->start_sector,
TEST_REQUEST_NUM_OF_BIOS,
TEST_PATTERN_5A,
bkops_end_io_final_fn);
if (ret) {
test_pr_err("%s: failed to add a write request",
__func__);
ret = -EINVAL;
break;
}
__blk_run_queue(q);
wait_event(mbtd->bkops_wait_q,
mbtd->bkops_stage == BKOPS_STAGE_4);
bkops_stat->ignore_card_bkops_status = false;
test_iosched_mark_test_completion();
break;
case BKOPS_URGENT_LEVEL_2_TWO_REQS:
mq->wr_packing_enabled = false;
bkops_stat->ignore_card_bkops_status = true;
card->ext_csd.raw_bkops_status = 2;
mbtd->bkops_stage = BKOPS_STAGE_1;
ret = test_iosched_add_wr_rd_test_req(0, WRITE,
td->start_sector,
TEST_REQUEST_NUM_OF_BIOS,
TEST_PATTERN_5A,
NULL);
if (ret) {
test_pr_err("%s: failed to add a write request",
__func__);
ret = -EINVAL;
break;
}
ret = test_iosched_add_wr_rd_test_req(0, WRITE,
td->start_sector,
TEST_REQUEST_NUM_OF_BIOS,
TEST_PATTERN_5A,
bkops_end_io_fn);
if (ret) {
test_pr_err("%s: failed to add a write request",
__func__);
ret = -EINVAL;
break;
}
__blk_run_queue(q);
wait_event(mbtd->bkops_wait_q,
mbtd->bkops_stage == BKOPS_STAGE_2);
card->ext_csd.raw_bkops_status = 0;
ret = test_iosched_add_wr_rd_test_req(0, WRITE,
td->start_sector,
TEST_REQUEST_NUM_OF_BIOS,
TEST_PATTERN_5A,
bkops_end_io_final_fn);
if (ret) {
test_pr_err("%s: failed to add a write request",
__func__);
ret = -EINVAL;
break;
}
__blk_run_queue(q);
wait_event(mbtd->bkops_wait_q,
mbtd->bkops_stage == BKOPS_STAGE_4);
bkops_stat->ignore_card_bkops_status = false;
test_iosched_mark_test_completion();
break;
default:
test_pr_err("%s: wrong testcase: %d", __func__,
mbtd->test_info.testcase);
ret = -EINVAL;
}
return ret;
}
static bool message_repeat;
static int test_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
message_repeat = 1;
return 0;
}
/* send_packing TEST */
static ssize_t send_write_packing_test_write(struct file *file,
const char __user *buf,
size_t count,
loff_t *ppos)
{
int ret = 0;
int i = 0;
int number = -1;
int j = 0;
test_pr_info("%s: -- send_write_packing TEST --", __func__);
sscanf(buf, "%d", &number);
if (number <= 0)
number = 1;
mbtd->test_group = TEST_SEND_WRITE_PACKING_GROUP;
if (validate_packed_commands_settings())
return count;
if (mbtd->random_test_seed > 0)
test_pr_info("%s: Test seed: %d", __func__,
mbtd->random_test_seed);
memset(&mbtd->test_info, 0, sizeof(struct test_info));
mbtd->test_info.data = mbtd;
mbtd->test_info.prepare_test_fn = prepare_test;
mbtd->test_info.check_test_result_fn = check_wr_packing_statistics;
mbtd->test_info.get_test_case_str_fn = get_test_case_str;
mbtd->test_info.post_test_fn = post_test;
for (i = 0; i < number; ++i) {
test_pr_info("%s: Cycle # %d / %d", __func__, i+1, number);
test_pr_info("%s: ====================", __func__);
for (j = SEND_WRITE_PACKING_MIN_TESTCASE;
j <= SEND_WRITE_PACKING_MAX_TESTCASE; j++) {
mbtd->test_info.testcase = j;
mbtd->is_random = RANDOM_TEST;
ret = test_iosched_start_test(&mbtd->test_info);
if (ret)
break;
/* Allow FS requests to be dispatched */
msleep(1000);
mbtd->test_info.testcase = j;
mbtd->is_random = NON_RANDOM_TEST;
ret = test_iosched_start_test(&mbtd->test_info);
if (ret)
break;
/* Allow FS requests to be dispatched */
msleep(1000);
}
}
test_pr_info("%s: Completed all the test cases.", __func__);
return count;
}
static ssize_t send_write_packing_test_read(struct file *file,
char __user *buffer,
size_t count,
loff_t *offset)
{
memset((void *)buffer, 0, count);
snprintf(buffer, count,
"\nsend_write_packing_test\n"
"=========\n"
"Description:\n"
"This test checks the following scenarios\n"
"- Pack due to FLUSH message\n"
"- Pack due to FLUSH after threshold writes\n"
"- Pack due to READ message\n"
"- Pack due to READ after threshold writes\n"
"- Pack due to empty queue\n"
"- Pack due to threshold writes\n"
"- Pack due to one over threshold writes\n");
if (message_repeat == 1) {
message_repeat = 0;
return strnlen(buffer, count);
} else {
return 0;
}
}
const struct file_operations send_write_packing_test_ops = {
.open = test_open,
.write = send_write_packing_test_write,
.read = send_write_packing_test_read,
};
/* err_check TEST */
static ssize_t err_check_test_write(struct file *file,
const char __user *buf,
size_t count,
loff_t *ppos)
{
int ret = 0;
int i = 0;
int number = -1;
int j = 0;
test_pr_info("%s: -- err_check TEST --", __func__);
sscanf(buf, "%d", &number);
if (number <= 0)
number = 1;
mbtd->test_group = TEST_ERR_CHECK_GROUP;
if (validate_packed_commands_settings())
return count;
if (mbtd->random_test_seed > 0)
test_pr_info("%s: Test seed: %d", __func__,
mbtd->random_test_seed);
memset(&mbtd->test_info, 0, sizeof(struct test_info));
mbtd->test_info.data = mbtd;
mbtd->test_info.prepare_test_fn = prepare_test;
mbtd->test_info.check_test_result_fn = check_wr_packing_statistics;
mbtd->test_info.get_test_case_str_fn = get_test_case_str;
mbtd->test_info.post_test_fn = post_test;
for (i = 0; i < number; ++i) {
test_pr_info("%s: Cycle # %d / %d", __func__, i+1, number);
test_pr_info("%s: ====================", __func__);
for (j = ERR_CHECK_MIN_TESTCASE;
j <= ERR_CHECK_MAX_TESTCASE ; j++) {
mbtd->test_info.testcase = j;
mbtd->is_random = RANDOM_TEST;
ret = test_iosched_start_test(&mbtd->test_info);
if (ret)
break;
/* Allow FS requests to be dispatched */
msleep(1000);
mbtd->test_info.testcase = j;
mbtd->is_random = NON_RANDOM_TEST;
ret = test_iosched_start_test(&mbtd->test_info);
if (ret)
break;
/* Allow FS requests to be dispatched */
msleep(1000);
}
}
test_pr_info("%s: Completed all the test cases.", __func__);
return count;
}
static ssize_t err_check_test_read(struct file *file,
char __user *buffer,
size_t count,
loff_t *offset)
{
memset((void *)buffer, 0, count);
snprintf(buffer, count,
"\nerr_check_TEST\n"
"=========\n"
"Description:\n"
"This test checks the following scenarios\n"
"- Return ABORT\n"
"- Return PARTIAL followed by success\n"
"- Return PARTIAL followed by abort\n"
"- Return PARTIAL multiple times until success\n"
"- Return PARTIAL with fail index = threshold\n"
"- Return RETRY\n"
"- Return CMD_ERR\n"
"- Return DATA_ERR\n");
if (message_repeat == 1) {
message_repeat = 0;
return strnlen(buffer, count);
} else {
return 0;
}
}
const struct file_operations err_check_test_ops = {
.open = test_open,
.write = err_check_test_write,
.read = err_check_test_read,
};
/* send_invalid_packed TEST */
static ssize_t send_invalid_packed_test_write(struct file *file,
const char __user *buf,
size_t count,
loff_t *ppos)
{
int ret = 0;
int i = 0;
int number = -1;
int j = 0;
int num_of_failures = 0;
test_pr_info("%s: -- send_invalid_packed TEST --", __func__);
sscanf(buf, "%d", &number);
if (number <= 0)
number = 1;
mbtd->test_group = TEST_SEND_INVALID_GROUP;
if (validate_packed_commands_settings())
return count;
if (mbtd->random_test_seed > 0)
test_pr_info("%s: Test seed: %d", __func__,
mbtd->random_test_seed);
memset(&mbtd->test_info, 0, sizeof(struct test_info));
mbtd->test_info.data = mbtd;
mbtd->test_info.prepare_test_fn = prepare_test;
mbtd->test_info.check_test_result_fn = check_wr_packing_statistics;
mbtd->test_info.get_test_case_str_fn = get_test_case_str;
mbtd->test_info.post_test_fn = post_test;
for (i = 0; i < number; ++i) {
test_pr_info("%s: Cycle # %d / %d", __func__, i+1, number);
test_pr_info("%s: ====================", __func__);
for (j = INVALID_CMD_MIN_TESTCASE;
j <= INVALID_CMD_MAX_TESTCASE ; j++) {
mbtd->test_info.testcase = j;
mbtd->is_random = RANDOM_TEST;
ret = test_iosched_start_test(&mbtd->test_info);
if (ret)
num_of_failures++;
/* Allow FS requests to be dispatched */
msleep(1000);
mbtd->test_info.testcase = j;
mbtd->is_random = NON_RANDOM_TEST;
ret = test_iosched_start_test(&mbtd->test_info);
if (ret)
num_of_failures++;
/* Allow FS requests to be dispatched */
msleep(1000);
}
}
test_pr_info("%s: Completed all the test cases.", __func__);
if (num_of_failures > 0) {
test_iosched_set_test_result(TEST_FAILED);
test_pr_err(
"There were %d failures during the test, TEST FAILED",
num_of_failures);
}
return count;
}
static ssize_t send_invalid_packed_test_read(struct file *file,
char __user *buffer,
size_t count,
loff_t *offset)
{
memset((void *)buffer, 0, count);
snprintf(buffer, count,
"\nsend_invalid_packed_TEST\n"
"=========\n"
"Description:\n"
"This test checks the following scenarios\n"
"- Send an invalid header version\n"
"- Send the wrong write code\n"
"- Send an invalid R/W code\n"
"- Send wrong start address in header\n"
"- Send header with block_count smaller than actual\n"
"- Send header with block_count larger than actual\n"
"- Send header CMD23 packed bit set\n"
"- Send CMD23 with block count over threshold\n"
"- Send CMD23 with block_count equals zero\n"
"- Send CMD23 packed bit unset\n"
"- Send CMD23 reliable write bit set\n"
"- Send CMD23 bits [16-29] set\n"
"- Send CMD23 header block not in block_count\n");
if (message_repeat == 1) {
message_repeat = 0;
return strnlen(buffer, count);
} else {
return 0;
}
}
const struct file_operations send_invalid_packed_test_ops = {
.open = test_open,
.write = send_invalid_packed_test_write,
.read = send_invalid_packed_test_read,
};
/* packing_control TEST */
static ssize_t write_packing_control_test_write(struct file *file,
const char __user *buf,
size_t count,
loff_t *ppos)
{
int ret = 0;
int i = 0;
int number = -1;
int j = 0;
struct mmc_queue *mq = test_iosched_get_req_queue()->queuedata;
int max_num_requests = mq->card->ext_csd.max_packed_writes;
int test_successful = 1;
test_pr_info("%s: -- write_packing_control TEST --", __func__);
sscanf(buf, "%d", &number);
if (number <= 0)
number = 1;
test_pr_info("%s: max_num_requests = %d ", __func__,
max_num_requests);
memset(&mbtd->test_info, 0, sizeof(struct test_info));
mbtd->test_group = TEST_PACKING_CONTROL_GROUP;
if (validate_packed_commands_settings())
return count;
mbtd->test_info.data = mbtd;
mbtd->test_info.prepare_test_fn = prepare_test;
mbtd->test_info.check_test_result_fn = check_wr_packing_statistics;
mbtd->test_info.get_test_case_str_fn = get_test_case_str;
for (i = 0; i < number; ++i) {
test_pr_info("%s: Cycle # %d / %d", __func__, i+1, number);
test_pr_info("%s: ====================", __func__);
for (j = PACKING_CONTROL_MIN_TESTCASE;
j <= PACKING_CONTROL_MAX_TESTCASE; j++) {
test_successful = 1;
mbtd->test_info.testcase = j;
mbtd->is_random = RANDOM_TEST;
ret = test_iosched_start_test(&mbtd->test_info);
if (ret) {
test_successful = 0;
break;
}
/* Allow FS requests to be dispatched */
msleep(1000);
mbtd->test_info.testcase = j;
mbtd->is_random = NON_RANDOM_TEST;
ret = test_iosched_start_test(&mbtd->test_info);
if (ret) {
test_successful = 0;
break;
}
/* Allow FS requests to be dispatched */
msleep(1000);
}
if (!test_successful)
break;
}
test_pr_info("%s: Completed all the test cases.", __func__);
return count;
}
static ssize_t write_packing_control_test_read(struct file *file,
char __user *buffer,
size_t count,
loff_t *offset)
{
memset((void *)buffer, 0, count);
snprintf(buffer, count,
"\nwrite_packing_control_test\n"
"=========\n"
"Description:\n"
"This test checks the following scenarios\n"
"- Packing expected - one over trigger\n"
"- Packing expected - N over trigger\n"
"- Packing expected - N over trigger followed by read\n"
"- Packing expected - N over trigger followed by flush\n"
"- Packing expected - threshold over trigger FB by flush\n"
"- Packing not expected - less than trigger\n"
"- Packing not expected - trigger requests\n"
"- Packing not expected - trigger, read, trigger\n"
"- Mixed state - packing -> no packing -> packing\n"
"- Mixed state - no packing -> packing -> no packing\n");
if (message_repeat == 1) {
message_repeat = 0;
return strnlen(buffer, count);
} else {
return 0;
}
}
const struct file_operations write_packing_control_test_ops = {
.open = test_open,
.write = write_packing_control_test_write,
.read = write_packing_control_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 ssize_t bkops_test_write(struct file *file,
const char __user *buf,
size_t count,
loff_t *ppos)
{
int ret = 0;
int i = 0, j;
int number = -1;
test_pr_info("%s: -- bkops_test TEST --", __func__);
sscanf(buf, "%d", &number);
if (number <= 0)
number = 1;
mbtd->test_group = TEST_BKOPS_GROUP;
memset(&mbtd->test_info, 0, sizeof(struct test_info));
mbtd->test_info.data = mbtd;
mbtd->test_info.prepare_test_fn = prepare_bkops;
mbtd->test_info.check_test_result_fn = check_bkops_result;
mbtd->test_info.get_test_case_str_fn = get_test_case_str;
mbtd->test_info.run_test_fn = run_bkops;
mbtd->test_info.timeout_msec = BKOPS_TEST_TIMEOUT;
mbtd->test_info.post_test_fn = bkops_post_test;
for (i = 0 ; i < number ; ++i) {
test_pr_info("%s: Cycle # %d / %d", __func__, i+1, number);
test_pr_info("%s: ===================", __func__);
for (j = BKOPS_MIN_TESTCASE ;
j <= BKOPS_MAX_TESTCASE ; j++) {
mbtd->test_info.testcase = j;
ret = test_iosched_start_test(&mbtd->test_info);
if (ret)
break;
}
}
test_pr_info("%s: Completed all the test cases.", __func__);
return count;
}
static ssize_t bkops_test_read(struct file *file,
char __user *buffer,
size_t count,
loff_t *offset)
{
memset((void *)buffer, 0, count);
snprintf(buffer, count,
"\nbkops_test\n========================\n"
"Description:\n"
"This test simulates BKOPS status from card\n"
"and verifies that:\n"
" - Starting BKOPS delayed work, level 1\n"
" - Starting BKOPS delayed work, level 1, with HPI\n"
" - Cancel starting BKOPS delayed work, "
" when a request is received\n"
" - Starting BKOPS urgent, level 2,3\n"
" - Starting BKOPS urgent with 2 requests\n");
return strnlen(buffer, count);
}
const struct file_operations bkops_test_ops = {
.open = test_open,
.write = bkops_test_write,
.read = bkops_test_read,
};
static ssize_t long_sequential_read_test_write(struct file *file,
const char __user *buf,
size_t count,
loff_t *ppos)
{
int ret = 0;
int i = 0;
int number = -1;
unsigned int mtime, integer, fraction;
test_pr_info("%s: -- Long Sequential Read TEST --", __func__);
sscanf(buf, "%d", &number);
if (number <= 0)
number = 1;
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_test;
mbtd->test_info.get_test_case_str_fn = get_test_case_str;
for (i = 0 ; i < number ; ++i) {
test_pr_info("%s: Cycle # %d / %d", __func__, i+1, number);
test_pr_info("%s: ====================", __func__);
mbtd->test_info.testcase = TEST_LONG_SEQUENTIAL_READ;
mbtd->is_random = NON_RANDOM_TEST;
ret = test_iosched_start_test(&mbtd->test_info);
if (ret)
break;
mtime = jiffies_to_msecs(mbtd->test_info.test_duration);
test_pr_info("%s: time is %u msec, size is %u.%u MiB",
__func__, mtime, LONG_TEST_SIZE_INTEGER,
LONG_TEST_SIZE_FRACTION);
/* we first multiply in order not to lose precision */
mtime *= MB_MSEC_RATIO_APPROXIMATION;
/* divide values to get a MiB/sec integer value with one
digit of precision. Multiply by 10 for one digit precision
*/
fraction = integer = (LONG_TEST_ACTUAL_BYTE_NUM * 10) / mtime;
integer /= 10;
/* and calculate the MiB value fraction */
fraction -= integer * 10;
test_pr_info("%s: Throughput: %u.%u MiB/sec\n"
, __func__, integer, fraction);
/* Allow FS requests to be dispatched */
msleep(1000);
}
return count;
}
static ssize_t long_sequential_read_test_read(struct file *file,
char __user *buffer,
size_t count,
loff_t *offset)
{
memset((void *)buffer, 0, count);
snprintf(buffer, count,
"\nlong_sequential_read_test\n"
"=========\n"
"Description:\n"
"This test runs the following scenarios\n"
"- Long Sequential Read Test: this test measures read "
"throughput at the driver level by sequentially reading many "
"large requests.\n");
if (message_repeat == 1) {
message_repeat = 0;
return strnlen(buffer, count);
} else
return 0;
}
const struct file_operations long_sequential_read_test_ops = {
.open = test_open,
.write = long_sequential_read_test_write,
.read = long_sequential_read_test_read,
};
static ssize_t long_sequential_write_test_write(struct file *file,
const char __user *buf,
size_t count,
loff_t *ppos)
{
int ret = 0;
int i = 0;
int number = -1;
unsigned int mtime, integer, fraction;
test_pr_info("%s: -- Long Sequential Write TEST --", __func__);
sscanf(buf, "%d", &number);
if (number <= 0)
number = 1;
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_test;
mbtd->test_info.get_test_case_str_fn = get_test_case_str;
for (i = 0 ; i < number ; ++i) {
test_pr_info("%s: Cycle # %d / %d", __func__, i+1, number);
test_pr_info("%s: ====================", __func__);
mbtd->test_info.testcase = TEST_LONG_SEQUENTIAL_WRITE;
mbtd->is_random = NON_RANDOM_TEST;
ret = test_iosched_start_test(&mbtd->test_info);
if (ret)
break;
mtime = jiffies_to_msecs(mbtd->test_info.test_duration);
test_pr_info("%s: time is %u msec, size is %u.%u MiB",
__func__, mtime, LONG_TEST_SIZE_INTEGER,
LONG_TEST_SIZE_FRACTION);
/* we first multiply in order not to lose precision */
mtime *= MB_MSEC_RATIO_APPROXIMATION;
/* divide values to get a MiB/sec integer value with one
digit of precision
*/
fraction = integer = (LONG_TEST_ACTUAL_BYTE_NUM * 10) / mtime;
integer /= 10;
/* and calculate the MiB value fraction */
fraction -= integer * 10;
test_pr_info("%s: Throughput: %u.%u MiB/sec\n",
__func__, integer, fraction);
/* Allow FS requests to be dispatched */
msleep(1000);
}
return count;
}
static ssize_t long_sequential_write_test_read(struct file *file,
char __user *buffer,
size_t count,
loff_t *offset)
{
memset((void *)buffer, 0, count);
snprintf(buffer, count,
"\nlong_sequential_write_test\n"
"=========\n"
"Description:\n"
"This test runs the following scenarios\n"
"- Long Sequential Write Test: this test measures write "
"throughput at the driver level by sequentially writing many "
"large requests\n");
if (message_repeat == 1) {
message_repeat = 0;
return strnlen(buffer, count);
} else
return 0;
}
const struct file_operations long_sequential_write_test_ops = {
.open = test_open,
.write = long_sequential_write_test_write,
.read = long_sequential_write_test_read,
};
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.packing_control_test);
debugfs_remove(mbtd->debug.discard_sanitize_test);
debugfs_remove(mbtd->debug.bkops_test);
debugfs_remove(mbtd->debug.long_sequential_read_test);
debugfs_remove(mbtd->debug.long_sequential_write_test);
}
static int mmc_block_test_debugfs_init(void)
{
struct dentry *utils_root, *tests_root;
utils_root = test_iosched_get_debugfs_utils_root();
tests_root = test_iosched_get_debugfs_tests_root();
if (!utils_root || !tests_root)
return -EINVAL;
mbtd->debug.random_test_seed = debugfs_create_u32(
"random_test_seed",
S_IRUGO | S_IWUGO,
utils_root,
&mbtd->random_test_seed);
if (!mbtd->debug.random_test_seed)
goto err_nomem;
mbtd->debug.send_write_packing_test =
debugfs_create_file("send_write_packing_test",
S_IRUGO | S_IWUGO,
tests_root,
NULL,
&send_write_packing_test_ops);
if (!mbtd->debug.send_write_packing_test)
goto err_nomem;
mbtd->debug.err_check_test =
debugfs_create_file("err_check_test",
S_IRUGO | S_IWUGO,
tests_root,
NULL,
&err_check_test_ops);
if (!mbtd->debug.err_check_test)
goto err_nomem;
mbtd->debug.send_invalid_packed_test =
debugfs_create_file("send_invalid_packed_test",
S_IRUGO | S_IWUGO,
tests_root,
NULL,
&send_invalid_packed_test_ops);
if (!mbtd->debug.send_invalid_packed_test)
goto err_nomem;
mbtd->debug.packing_control_test = debugfs_create_file(
"packing_control_test",
S_IRUGO | S_IWUGO,
tests_root,
NULL,
&write_packing_control_test_ops);
if (!mbtd->debug.packing_control_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) {
mmc_block_test_debugfs_cleanup();
return -ENOMEM;
}
mbtd->debug.bkops_test =
debugfs_create_file("bkops_test",
S_IRUGO | S_IWUGO,
tests_root,
NULL,
&bkops_test_ops);
if (!mbtd->debug.bkops_test)
goto err_nomem;
mbtd->debug.long_sequential_read_test = debugfs_create_file(
"long_sequential_read_test",
S_IRUGO | S_IWUGO,
tests_root,
NULL,
&long_sequential_read_test_ops);
if (!mbtd->debug.long_sequential_read_test)
goto err_nomem;
mbtd->debug.long_sequential_write_test = debugfs_create_file(
"long_sequential_write_test",
S_IRUGO | S_IWUGO,
tests_root,
NULL,
&long_sequential_write_test_ops);
if (!mbtd->debug.long_sequential_write_test)
goto err_nomem;
return 0;
err_nomem:
mmc_block_test_debugfs_cleanup();
return -ENOMEM;
}
static void mmc_block_test_probe(void)
{
struct request_queue *q = test_iosched_get_req_queue();
struct mmc_queue *mq;
int max_packed_reqs;
if (!q) {
test_pr_err("%s: NULL request queue", __func__);
return;
}
mq = q->queuedata;
if (!mq) {
test_pr_err("%s: NULL mq", __func__);
return;
}
max_packed_reqs = mq->card->ext_csd.max_packed_writes;
mbtd->exp_packed_stats.packing_events =
kzalloc((max_packed_reqs + 1) *
sizeof(*mbtd->exp_packed_stats.packing_events),
GFP_KERNEL);
mmc_block_test_debugfs_init();
}
static void mmc_block_test_remove(void)
{
mmc_block_test_debugfs_cleanup();
}
static int __init mmc_block_test_init(void)
{
mbtd = kzalloc(sizeof(struct mmc_block_test_data), GFP_KERNEL);
if (!mbtd) {
test_pr_err("%s: failed to allocate mmc_block_test_data",
__func__);
return -ENODEV;
}
init_waitqueue_head(&mbtd->bkops_wait_q);
mbtd->bdt.init_fn = mmc_block_test_probe;
mbtd->bdt.exit_fn = mmc_block_test_remove;
INIT_LIST_HEAD(&mbtd->bdt.list);
test_iosched_register(&mbtd->bdt);
return 0;
}
static void __exit mmc_block_test_exit(void)
{
test_iosched_unregister(&mbtd->bdt);
kfree(mbtd);
}
module_init(mmc_block_test_init);
module_exit(mmc_block_test_exit);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("MMC block test");