2 * linux/drivers/mmc/card/mmc_test.c
4 * Copyright 2007-2008 Pierre Ossman
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or (at
9 * your option) any later version.
12 #include <linux/mmc/core.h>
13 #include <linux/mmc/card.h>
14 #include <linux/mmc/host.h>
15 #include <linux/mmc/mmc.h>
16 #include <linux/slab.h>
18 #include <linux/scatterlist.h>
19 #include <linux/swap.h> /* For nr_free_buffer_pages() */
20 #include <linux/list.h>
22 #include <linux/debugfs.h>
23 #include <linux/uaccess.h>
24 #include <linux/seq_file.h>
25 #include <linux/module.h>
29 #define RESULT_UNSUP_HOST 2
30 #define RESULT_UNSUP_CARD 3
32 #define BUFFER_ORDER 2
33 #define BUFFER_SIZE (PAGE_SIZE << BUFFER_ORDER)
35 #define TEST_ALIGN_END 8
38 * Limit the test area size to the maximum MMC HC erase group size. Note that
39 * the maximum SD allocation unit size is just 4MiB.
41 #define TEST_AREA_MAX_SIZE (128 * 1024 * 1024)
44 * struct mmc_test_pages - pages allocated by 'alloc_pages()'.
45 * @page: first page in the allocation
46 * @order: order of the number of pages allocated
48 struct mmc_test_pages {
54 * struct mmc_test_mem - allocated memory.
55 * @arr: array of allocations
56 * @cnt: number of allocations
59 struct mmc_test_pages *arr;
64 * struct mmc_test_area - information for performance tests.
65 * @max_sz: test area size (in bytes)
66 * @dev_addr: address on card at which to do performance tests
67 * @max_tfr: maximum transfer size allowed by driver (in bytes)
68 * @max_segs: maximum segments allowed by driver in scatterlist @sg
69 * @max_seg_sz: maximum segment size allowed by driver
70 * @blocks: number of (512 byte) blocks currently mapped by @sg
71 * @sg_len: length of currently mapped scatterlist @sg
72 * @mem: allocated memory
75 struct mmc_test_area {
77 unsigned int dev_addr;
79 unsigned int max_segs;
80 unsigned int max_seg_sz;
83 struct mmc_test_mem *mem;
84 struct scatterlist *sg;
88 * struct mmc_test_transfer_result - transfer results for performance tests.
89 * @link: double-linked list
90 * @count: amount of group of sectors to check
91 * @sectors: amount of sectors to check in one group
92 * @ts: time values of transfer
93 * @rate: calculated transfer rate
94 * @iops: I/O operations per second (times 100)
96 struct mmc_test_transfer_result {
97 struct list_head link;
106 * struct mmc_test_general_result - results for tests.
107 * @link: double-linked list
108 * @card: card under test
109 * @testcase: number of test case
110 * @result: result of test run
111 * @tr_lst: transfer measurements if any as mmc_test_transfer_result
113 struct mmc_test_general_result {
114 struct list_head link;
115 struct mmc_card *card;
118 struct list_head tr_lst;
122 * struct mmc_test_dbgfs_file - debugfs related file.
123 * @link: double-linked list
124 * @card: card under test
125 * @file: file created under debugfs
127 struct mmc_test_dbgfs_file {
128 struct list_head link;
129 struct mmc_card *card;
134 * struct mmc_test_card - test information.
135 * @card: card under test
136 * @scratch: transfer buffer
137 * @buffer: transfer buffer
138 * @highmem: buffer for highmem tests
139 * @area: information for performance tests
140 * @gr: pointer to results of current testcase
142 struct mmc_test_card {
143 struct mmc_card *card;
145 u8 scratch[BUFFER_SIZE];
147 #ifdef CONFIG_HIGHMEM
148 struct page *highmem;
150 struct mmc_test_area area;
151 struct mmc_test_general_result *gr;
154 enum mmc_test_prep_media {
155 MMC_TEST_PREP_NONE = 0,
156 MMC_TEST_PREP_WRITE_FULL = 1 << 0,
157 MMC_TEST_PREP_ERASE = 1 << 1,
160 struct mmc_test_multiple_rw {
161 unsigned int *sg_len;
166 bool do_nonblock_req;
167 enum mmc_test_prep_media prepare;
170 struct mmc_test_async_req {
171 struct mmc_async_req areq;
172 struct mmc_test_card *test;
175 /*******************************************************************/
176 /* General helper functions */
177 /*******************************************************************/
180 * Configure correct block size in card
182 static int mmc_test_set_blksize(struct mmc_test_card *test, unsigned size)
184 return mmc_set_blocklen(test->card, size);
188 * Fill in the mmc_request structure given a set of transfer parameters.
190 static void mmc_test_prepare_mrq(struct mmc_test_card *test,
191 struct mmc_request *mrq, struct scatterlist *sg, unsigned sg_len,
192 unsigned dev_addr, unsigned blocks, unsigned blksz, int write)
194 BUG_ON(!mrq || !mrq->cmd || !mrq->data || !mrq->stop);
197 mrq->cmd->opcode = write ?
198 MMC_WRITE_MULTIPLE_BLOCK : MMC_READ_MULTIPLE_BLOCK;
200 mrq->cmd->opcode = write ?
201 MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK;
204 mrq->cmd->arg = dev_addr;
205 if (!mmc_card_blockaddr(test->card))
208 mrq->cmd->flags = MMC_RSP_R1 | MMC_CMD_ADTC;
213 mrq->stop->opcode = MMC_STOP_TRANSMISSION;
215 mrq->stop->flags = MMC_RSP_R1B | MMC_CMD_AC;
218 mrq->data->blksz = blksz;
219 mrq->data->blocks = blocks;
220 mrq->data->flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
222 mrq->data->sg_len = sg_len;
224 mmc_set_data_timeout(mrq->data, test->card);
227 static int mmc_test_busy(struct mmc_command *cmd)
229 return !(cmd->resp[0] & R1_READY_FOR_DATA) ||
230 (R1_CURRENT_STATE(cmd->resp[0]) == R1_STATE_PRG);
234 * Wait for the card to finish the busy state
236 static int mmc_test_wait_busy(struct mmc_test_card *test)
239 struct mmc_command cmd = {0};
243 memset(&cmd, 0, sizeof(struct mmc_command));
245 cmd.opcode = MMC_SEND_STATUS;
246 cmd.arg = test->card->rca << 16;
247 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
249 ret = mmc_wait_for_cmd(test->card->host, &cmd, 0);
253 if (!busy && mmc_test_busy(&cmd)) {
255 if (test->card->host->caps & MMC_CAP_WAIT_WHILE_BUSY)
256 pr_info("%s: Warning: Host did not "
257 "wait for busy state to end.\n",
258 mmc_hostname(test->card->host));
260 } while (mmc_test_busy(&cmd));
266 * Transfer a single sector of kernel addressable data
268 static int mmc_test_buffer_transfer(struct mmc_test_card *test,
269 u8 *buffer, unsigned addr, unsigned blksz, int write)
273 struct mmc_request mrq = {0};
274 struct mmc_command cmd = {0};
275 struct mmc_command stop = {0};
276 struct mmc_data data = {0};
278 struct scatterlist sg;
284 sg_init_one(&sg, buffer, blksz);
286 mmc_test_prepare_mrq(test, &mrq, &sg, 1, addr, 1, blksz, write);
288 mmc_wait_for_req(test->card->host, &mrq);
295 ret = mmc_test_wait_busy(test);
302 static void mmc_test_free_mem(struct mmc_test_mem *mem)
307 __free_pages(mem->arr[mem->cnt].page,
308 mem->arr[mem->cnt].order);
314 * Allocate a lot of memory, preferably max_sz but at least min_sz. In case
315 * there isn't much memory do not exceed 1/16th total lowmem pages. Also do
316 * not exceed a maximum number of segments and try not to make segments much
317 * bigger than maximum segment size.
319 static struct mmc_test_mem *mmc_test_alloc_mem(unsigned long min_sz,
320 unsigned long max_sz,
321 unsigned int max_segs,
322 unsigned int max_seg_sz)
324 unsigned long max_page_cnt = DIV_ROUND_UP(max_sz, PAGE_SIZE);
325 unsigned long min_page_cnt = DIV_ROUND_UP(min_sz, PAGE_SIZE);
326 unsigned long max_seg_page_cnt = DIV_ROUND_UP(max_seg_sz, PAGE_SIZE);
327 unsigned long page_cnt = 0;
328 unsigned long limit = nr_free_buffer_pages() >> 4;
329 struct mmc_test_mem *mem;
331 if (max_page_cnt > limit)
332 max_page_cnt = limit;
333 if (min_page_cnt > max_page_cnt)
334 min_page_cnt = max_page_cnt;
336 if (max_seg_page_cnt > max_page_cnt)
337 max_seg_page_cnt = max_page_cnt;
339 if (max_segs > max_page_cnt)
340 max_segs = max_page_cnt;
342 mem = kzalloc(sizeof(struct mmc_test_mem), GFP_KERNEL);
346 mem->arr = kzalloc(sizeof(struct mmc_test_pages) * max_segs,
351 while (max_page_cnt) {
354 gfp_t flags = GFP_KERNEL | GFP_DMA | __GFP_NOWARN |
357 order = get_order(max_seg_page_cnt << PAGE_SHIFT);
359 page = alloc_pages(flags, order);
365 if (page_cnt < min_page_cnt)
369 mem->arr[mem->cnt].page = page;
370 mem->arr[mem->cnt].order = order;
372 if (max_page_cnt <= (1UL << order))
374 max_page_cnt -= 1UL << order;
375 page_cnt += 1UL << order;
376 if (mem->cnt >= max_segs) {
377 if (page_cnt < min_page_cnt)
386 mmc_test_free_mem(mem);
391 * Map memory into a scatterlist. Optionally allow the same memory to be
392 * mapped more than once.
394 static int mmc_test_map_sg(struct mmc_test_mem *mem, unsigned long size,
395 struct scatterlist *sglist, int repeat,
396 unsigned int max_segs, unsigned int max_seg_sz,
397 unsigned int *sg_len, int min_sg_len)
399 struct scatterlist *sg = NULL;
401 unsigned long sz = size;
403 sg_init_table(sglist, max_segs);
404 if (min_sg_len > max_segs)
405 min_sg_len = max_segs;
409 for (i = 0; i < mem->cnt; i++) {
410 unsigned long len = PAGE_SIZE << mem->arr[i].order;
412 if (min_sg_len && (size / min_sg_len < len))
413 len = ALIGN(size / min_sg_len, 512);
416 if (len > max_seg_sz)
424 sg_set_page(sg, mem->arr[i].page, len, 0);
430 } while (sz && repeat);
442 * Map memory into a scatterlist so that no pages are contiguous. Allow the
443 * same memory to be mapped more than once.
445 static int mmc_test_map_sg_max_scatter(struct mmc_test_mem *mem,
447 struct scatterlist *sglist,
448 unsigned int max_segs,
449 unsigned int max_seg_sz,
450 unsigned int *sg_len)
452 struct scatterlist *sg = NULL;
453 unsigned int i = mem->cnt, cnt;
455 void *base, *addr, *last_addr = NULL;
457 sg_init_table(sglist, max_segs);
461 base = page_address(mem->arr[--i].page);
462 cnt = 1 << mem->arr[i].order;
464 addr = base + PAGE_SIZE * --cnt;
465 if (last_addr && last_addr + PAGE_SIZE == addr)
469 if (len > max_seg_sz)
479 sg_set_page(sg, virt_to_page(addr), len, 0);
494 * Calculate transfer rate in bytes per second.
496 static unsigned int mmc_test_rate(uint64_t bytes, struct timespec *ts)
506 while (ns > UINT_MAX) {
514 do_div(bytes, (uint32_t)ns);
520 * Save transfer results for future usage
522 static void mmc_test_save_transfer_result(struct mmc_test_card *test,
523 unsigned int count, unsigned int sectors, struct timespec ts,
524 unsigned int rate, unsigned int iops)
526 struct mmc_test_transfer_result *tr;
531 tr = kmalloc(sizeof(struct mmc_test_transfer_result), GFP_KERNEL);
536 tr->sectors = sectors;
541 list_add_tail(&tr->link, &test->gr->tr_lst);
545 * Print the transfer rate.
547 static void mmc_test_print_rate(struct mmc_test_card *test, uint64_t bytes,
548 struct timespec *ts1, struct timespec *ts2)
550 unsigned int rate, iops, sectors = bytes >> 9;
553 ts = timespec_sub(*ts2, *ts1);
555 rate = mmc_test_rate(bytes, &ts);
556 iops = mmc_test_rate(100, &ts); /* I/O ops per sec x 100 */
558 pr_info("%s: Transfer of %u sectors (%u%s KiB) took %lu.%09lu "
559 "seconds (%u kB/s, %u KiB/s, %u.%02u IOPS)\n",
560 mmc_hostname(test->card->host), sectors, sectors >> 1,
561 (sectors & 1 ? ".5" : ""), (unsigned long)ts.tv_sec,
562 (unsigned long)ts.tv_nsec, rate / 1000, rate / 1024,
563 iops / 100, iops % 100);
565 mmc_test_save_transfer_result(test, 1, sectors, ts, rate, iops);
569 * Print the average transfer rate.
571 static void mmc_test_print_avg_rate(struct mmc_test_card *test, uint64_t bytes,
572 unsigned int count, struct timespec *ts1,
573 struct timespec *ts2)
575 unsigned int rate, iops, sectors = bytes >> 9;
576 uint64_t tot = bytes * count;
579 ts = timespec_sub(*ts2, *ts1);
581 rate = mmc_test_rate(tot, &ts);
582 iops = mmc_test_rate(count * 100, &ts); /* I/O ops per sec x 100 */
584 pr_info("%s: Transfer of %u x %u sectors (%u x %u%s KiB) took "
585 "%lu.%09lu seconds (%u kB/s, %u KiB/s, "
586 "%u.%02u IOPS, sg_len %d)\n",
587 mmc_hostname(test->card->host), count, sectors, count,
588 sectors >> 1, (sectors & 1 ? ".5" : ""),
589 (unsigned long)ts.tv_sec, (unsigned long)ts.tv_nsec,
590 rate / 1000, rate / 1024, iops / 100, iops % 100,
593 mmc_test_save_transfer_result(test, count, sectors, ts, rate, iops);
597 * Return the card size in sectors.
599 static unsigned int mmc_test_capacity(struct mmc_card *card)
601 if (!mmc_card_sd(card) && mmc_card_blockaddr(card))
602 return card->ext_csd.sectors;
604 return card->csd.capacity << (card->csd.read_blkbits - 9);
607 /*******************************************************************/
608 /* Test preparation and cleanup */
609 /*******************************************************************/
612 * Fill the first couple of sectors of the card with known data
613 * so that bad reads/writes can be detected
615 static int __mmc_test_prepare(struct mmc_test_card *test, int write)
619 ret = mmc_test_set_blksize(test, 512);
624 memset(test->buffer, 0xDF, 512);
626 for (i = 0;i < 512;i++)
630 for (i = 0;i < BUFFER_SIZE / 512;i++) {
631 ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1);
639 static int mmc_test_prepare_write(struct mmc_test_card *test)
641 return __mmc_test_prepare(test, 1);
644 static int mmc_test_prepare_read(struct mmc_test_card *test)
646 return __mmc_test_prepare(test, 0);
649 static int mmc_test_cleanup(struct mmc_test_card *test)
653 ret = mmc_test_set_blksize(test, 512);
657 memset(test->buffer, 0, 512);
659 for (i = 0;i < BUFFER_SIZE / 512;i++) {
660 ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1);
668 /*******************************************************************/
669 /* Test execution helpers */
670 /*******************************************************************/
673 * Modifies the mmc_request to perform the "short transfer" tests
675 static void mmc_test_prepare_broken_mrq(struct mmc_test_card *test,
676 struct mmc_request *mrq, int write)
678 BUG_ON(!mrq || !mrq->cmd || !mrq->data);
680 if (mrq->data->blocks > 1) {
681 mrq->cmd->opcode = write ?
682 MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK;
685 mrq->cmd->opcode = MMC_SEND_STATUS;
686 mrq->cmd->arg = test->card->rca << 16;
691 * Checks that a normal transfer didn't have any errors
693 static int mmc_test_check_result(struct mmc_test_card *test,
694 struct mmc_request *mrq)
698 BUG_ON(!mrq || !mrq->cmd || !mrq->data);
702 if (!ret && mrq->cmd->error)
703 ret = mrq->cmd->error;
704 if (!ret && mrq->data->error)
705 ret = mrq->data->error;
706 if (!ret && mrq->stop && mrq->stop->error)
707 ret = mrq->stop->error;
708 if (!ret && mrq->data->bytes_xfered !=
709 mrq->data->blocks * mrq->data->blksz)
713 ret = RESULT_UNSUP_HOST;
718 static int mmc_test_check_result_async(struct mmc_card *card,
719 struct mmc_async_req *areq)
721 struct mmc_test_async_req *test_async =
722 container_of(areq, struct mmc_test_async_req, areq);
724 mmc_test_wait_busy(test_async->test);
726 return mmc_test_check_result(test_async->test, areq->mrq);
730 * Checks that a "short transfer" behaved as expected
732 static int mmc_test_check_broken_result(struct mmc_test_card *test,
733 struct mmc_request *mrq)
737 BUG_ON(!mrq || !mrq->cmd || !mrq->data);
741 if (!ret && mrq->cmd->error)
742 ret = mrq->cmd->error;
743 if (!ret && mrq->data->error == 0)
745 if (!ret && mrq->data->error != -ETIMEDOUT)
746 ret = mrq->data->error;
747 if (!ret && mrq->stop && mrq->stop->error)
748 ret = mrq->stop->error;
749 if (mrq->data->blocks > 1) {
750 if (!ret && mrq->data->bytes_xfered > mrq->data->blksz)
753 if (!ret && mrq->data->bytes_xfered > 0)
758 ret = RESULT_UNSUP_HOST;
764 * Tests nonblock transfer with certain parameters
766 static void mmc_test_nonblock_reset(struct mmc_request *mrq,
767 struct mmc_command *cmd,
768 struct mmc_command *stop,
769 struct mmc_data *data)
771 memset(mrq, 0, sizeof(struct mmc_request));
772 memset(cmd, 0, sizeof(struct mmc_command));
773 memset(data, 0, sizeof(struct mmc_data));
774 memset(stop, 0, sizeof(struct mmc_command));
780 static int mmc_test_nonblock_transfer(struct mmc_test_card *test,
781 struct scatterlist *sg, unsigned sg_len,
782 unsigned dev_addr, unsigned blocks,
783 unsigned blksz, int write, int count)
785 struct mmc_request mrq1;
786 struct mmc_command cmd1;
787 struct mmc_command stop1;
788 struct mmc_data data1;
790 struct mmc_request mrq2;
791 struct mmc_command cmd2;
792 struct mmc_command stop2;
793 struct mmc_data data2;
795 struct mmc_test_async_req test_areq[2];
796 struct mmc_async_req *done_areq;
797 struct mmc_async_req *cur_areq = &test_areq[0].areq;
798 struct mmc_async_req *other_areq = &test_areq[1].areq;
802 test_areq[0].test = test;
803 test_areq[1].test = test;
805 mmc_test_nonblock_reset(&mrq1, &cmd1, &stop1, &data1);
806 mmc_test_nonblock_reset(&mrq2, &cmd2, &stop2, &data2);
808 cur_areq->mrq = &mrq1;
809 cur_areq->err_check = mmc_test_check_result_async;
810 other_areq->mrq = &mrq2;
811 other_areq->err_check = mmc_test_check_result_async;
813 for (i = 0; i < count; i++) {
814 mmc_test_prepare_mrq(test, cur_areq->mrq, sg, sg_len, dev_addr,
815 blocks, blksz, write);
816 done_areq = mmc_start_req(test->card->host, cur_areq, &ret);
818 if (ret || (!done_areq && i > 0))
822 if (done_areq->mrq == &mrq2)
823 mmc_test_nonblock_reset(&mrq2, &cmd2,
826 mmc_test_nonblock_reset(&mrq1, &cmd1,
829 done_areq = cur_areq;
830 cur_areq = other_areq;
831 other_areq = done_areq;
835 done_areq = mmc_start_req(test->card->host, NULL, &ret);
843 * Tests a basic transfer with certain parameters
845 static int mmc_test_simple_transfer(struct mmc_test_card *test,
846 struct scatterlist *sg, unsigned sg_len, unsigned dev_addr,
847 unsigned blocks, unsigned blksz, int write)
849 struct mmc_request mrq = {0};
850 struct mmc_command cmd = {0};
851 struct mmc_command stop = {0};
852 struct mmc_data data = {0};
858 mmc_test_prepare_mrq(test, &mrq, sg, sg_len, dev_addr,
859 blocks, blksz, write);
861 mmc_wait_for_req(test->card->host, &mrq);
863 mmc_test_wait_busy(test);
865 return mmc_test_check_result(test, &mrq);
869 * Tests a transfer where the card will fail completely or partly
871 static int mmc_test_broken_transfer(struct mmc_test_card *test,
872 unsigned blocks, unsigned blksz, int write)
874 struct mmc_request mrq = {0};
875 struct mmc_command cmd = {0};
876 struct mmc_command stop = {0};
877 struct mmc_data data = {0};
879 struct scatterlist sg;
885 sg_init_one(&sg, test->buffer, blocks * blksz);
887 mmc_test_prepare_mrq(test, &mrq, &sg, 1, 0, blocks, blksz, write);
888 mmc_test_prepare_broken_mrq(test, &mrq, write);
890 mmc_wait_for_req(test->card->host, &mrq);
892 mmc_test_wait_busy(test);
894 return mmc_test_check_broken_result(test, &mrq);
898 * Does a complete transfer test where data is also validated
900 * Note: mmc_test_prepare() must have been done before this call
902 static int mmc_test_transfer(struct mmc_test_card *test,
903 struct scatterlist *sg, unsigned sg_len, unsigned dev_addr,
904 unsigned blocks, unsigned blksz, int write)
910 for (i = 0;i < blocks * blksz;i++)
911 test->scratch[i] = i;
913 memset(test->scratch, 0, BUFFER_SIZE);
915 local_irq_save(flags);
916 sg_copy_from_buffer(sg, sg_len, test->scratch, BUFFER_SIZE);
917 local_irq_restore(flags);
919 ret = mmc_test_set_blksize(test, blksz);
923 ret = mmc_test_simple_transfer(test, sg, sg_len, dev_addr,
924 blocks, blksz, write);
931 ret = mmc_test_set_blksize(test, 512);
935 sectors = (blocks * blksz + 511) / 512;
936 if ((sectors * 512) == (blocks * blksz))
939 if ((sectors * 512) > BUFFER_SIZE)
942 memset(test->buffer, 0, sectors * 512);
944 for (i = 0;i < sectors;i++) {
945 ret = mmc_test_buffer_transfer(test,
946 test->buffer + i * 512,
947 dev_addr + i, 512, 0);
952 for (i = 0;i < blocks * blksz;i++) {
953 if (test->buffer[i] != (u8)i)
957 for (;i < sectors * 512;i++) {
958 if (test->buffer[i] != 0xDF)
962 local_irq_save(flags);
963 sg_copy_to_buffer(sg, sg_len, test->scratch, BUFFER_SIZE);
964 local_irq_restore(flags);
965 for (i = 0;i < blocks * blksz;i++) {
966 if (test->scratch[i] != (u8)i)
974 /*******************************************************************/
976 /*******************************************************************/
978 struct mmc_test_case {
981 int (*prepare)(struct mmc_test_card *);
982 int (*run)(struct mmc_test_card *);
983 int (*cleanup)(struct mmc_test_card *);
986 static int mmc_test_basic_write(struct mmc_test_card *test)
989 struct scatterlist sg;
991 ret = mmc_test_set_blksize(test, 512);
995 sg_init_one(&sg, test->buffer, 512);
997 ret = mmc_test_simple_transfer(test, &sg, 1, 0, 1, 512, 1);
1004 static int mmc_test_basic_read(struct mmc_test_card *test)
1007 struct scatterlist sg;
1009 ret = mmc_test_set_blksize(test, 512);
1013 sg_init_one(&sg, test->buffer, 512);
1015 ret = mmc_test_simple_transfer(test, &sg, 1, 0, 1, 512, 0);
1022 static int mmc_test_verify_write(struct mmc_test_card *test)
1025 struct scatterlist sg;
1027 sg_init_one(&sg, test->buffer, 512);
1029 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
1036 static int mmc_test_verify_read(struct mmc_test_card *test)
1039 struct scatterlist sg;
1041 sg_init_one(&sg, test->buffer, 512);
1043 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
1050 static int mmc_test_multi_write(struct mmc_test_card *test)
1054 struct scatterlist sg;
1056 if (test->card->host->max_blk_count == 1)
1057 return RESULT_UNSUP_HOST;
1059 size = PAGE_SIZE * 2;
1060 size = min(size, test->card->host->max_req_size);
1061 size = min(size, test->card->host->max_seg_size);
1062 size = min(size, test->card->host->max_blk_count * 512);
1065 return RESULT_UNSUP_HOST;
1067 sg_init_one(&sg, test->buffer, size);
1069 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
1076 static int mmc_test_multi_read(struct mmc_test_card *test)
1080 struct scatterlist sg;
1082 if (test->card->host->max_blk_count == 1)
1083 return RESULT_UNSUP_HOST;
1085 size = PAGE_SIZE * 2;
1086 size = min(size, test->card->host->max_req_size);
1087 size = min(size, test->card->host->max_seg_size);
1088 size = min(size, test->card->host->max_blk_count * 512);
1091 return RESULT_UNSUP_HOST;
1093 sg_init_one(&sg, test->buffer, size);
1095 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
1102 static int mmc_test_pow2_write(struct mmc_test_card *test)
1105 struct scatterlist sg;
1107 if (!test->card->csd.write_partial)
1108 return RESULT_UNSUP_CARD;
1110 for (i = 1; i < 512;i <<= 1) {
1111 sg_init_one(&sg, test->buffer, i);
1112 ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 1);
1120 static int mmc_test_pow2_read(struct mmc_test_card *test)
1123 struct scatterlist sg;
1125 if (!test->card->csd.read_partial)
1126 return RESULT_UNSUP_CARD;
1128 for (i = 1; i < 512;i <<= 1) {
1129 sg_init_one(&sg, test->buffer, i);
1130 ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 0);
1138 static int mmc_test_weird_write(struct mmc_test_card *test)
1141 struct scatterlist sg;
1143 if (!test->card->csd.write_partial)
1144 return RESULT_UNSUP_CARD;
1146 for (i = 3; i < 512;i += 7) {
1147 sg_init_one(&sg, test->buffer, i);
1148 ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 1);
1156 static int mmc_test_weird_read(struct mmc_test_card *test)
1159 struct scatterlist sg;
1161 if (!test->card->csd.read_partial)
1162 return RESULT_UNSUP_CARD;
1164 for (i = 3; i < 512;i += 7) {
1165 sg_init_one(&sg, test->buffer, i);
1166 ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 0);
1174 static int mmc_test_align_write(struct mmc_test_card *test)
1177 struct scatterlist sg;
1179 for (i = 1; i < TEST_ALIGN_END; i++) {
1180 sg_init_one(&sg, test->buffer + i, 512);
1181 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
1189 static int mmc_test_align_read(struct mmc_test_card *test)
1192 struct scatterlist sg;
1194 for (i = 1; i < TEST_ALIGN_END; i++) {
1195 sg_init_one(&sg, test->buffer + i, 512);
1196 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
1204 static int mmc_test_align_multi_write(struct mmc_test_card *test)
1208 struct scatterlist sg;
1210 if (test->card->host->max_blk_count == 1)
1211 return RESULT_UNSUP_HOST;
1213 size = PAGE_SIZE * 2;
1214 size = min(size, test->card->host->max_req_size);
1215 size = min(size, test->card->host->max_seg_size);
1216 size = min(size, test->card->host->max_blk_count * 512);
1219 return RESULT_UNSUP_HOST;
1221 for (i = 1; i < TEST_ALIGN_END; i++) {
1222 sg_init_one(&sg, test->buffer + i, size);
1223 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
1231 static int mmc_test_align_multi_read(struct mmc_test_card *test)
1235 struct scatterlist sg;
1237 if (test->card->host->max_blk_count == 1)
1238 return RESULT_UNSUP_HOST;
1240 size = PAGE_SIZE * 2;
1241 size = min(size, test->card->host->max_req_size);
1242 size = min(size, test->card->host->max_seg_size);
1243 size = min(size, test->card->host->max_blk_count * 512);
1246 return RESULT_UNSUP_HOST;
1248 for (i = 1; i < TEST_ALIGN_END; i++) {
1249 sg_init_one(&sg, test->buffer + i, size);
1250 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
1258 static int mmc_test_xfersize_write(struct mmc_test_card *test)
1262 ret = mmc_test_set_blksize(test, 512);
1266 ret = mmc_test_broken_transfer(test, 1, 512, 1);
1273 static int mmc_test_xfersize_read(struct mmc_test_card *test)
1277 ret = mmc_test_set_blksize(test, 512);
1281 ret = mmc_test_broken_transfer(test, 1, 512, 0);
1288 static int mmc_test_multi_xfersize_write(struct mmc_test_card *test)
1292 if (test->card->host->max_blk_count == 1)
1293 return RESULT_UNSUP_HOST;
1295 ret = mmc_test_set_blksize(test, 512);
1299 ret = mmc_test_broken_transfer(test, 2, 512, 1);
1306 static int mmc_test_multi_xfersize_read(struct mmc_test_card *test)
1310 if (test->card->host->max_blk_count == 1)
1311 return RESULT_UNSUP_HOST;
1313 ret = mmc_test_set_blksize(test, 512);
1317 ret = mmc_test_broken_transfer(test, 2, 512, 0);
1324 #ifdef CONFIG_HIGHMEM
1326 static int mmc_test_write_high(struct mmc_test_card *test)
1329 struct scatterlist sg;
1331 sg_init_table(&sg, 1);
1332 sg_set_page(&sg, test->highmem, 512, 0);
1334 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
1341 static int mmc_test_read_high(struct mmc_test_card *test)
1344 struct scatterlist sg;
1346 sg_init_table(&sg, 1);
1347 sg_set_page(&sg, test->highmem, 512, 0);
1349 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
1356 static int mmc_test_multi_write_high(struct mmc_test_card *test)
1360 struct scatterlist sg;
1362 if (test->card->host->max_blk_count == 1)
1363 return RESULT_UNSUP_HOST;
1365 size = PAGE_SIZE * 2;
1366 size = min(size, test->card->host->max_req_size);
1367 size = min(size, test->card->host->max_seg_size);
1368 size = min(size, test->card->host->max_blk_count * 512);
1371 return RESULT_UNSUP_HOST;
1373 sg_init_table(&sg, 1);
1374 sg_set_page(&sg, test->highmem, size, 0);
1376 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
1383 static int mmc_test_multi_read_high(struct mmc_test_card *test)
1387 struct scatterlist sg;
1389 if (test->card->host->max_blk_count == 1)
1390 return RESULT_UNSUP_HOST;
1392 size = PAGE_SIZE * 2;
1393 size = min(size, test->card->host->max_req_size);
1394 size = min(size, test->card->host->max_seg_size);
1395 size = min(size, test->card->host->max_blk_count * 512);
1398 return RESULT_UNSUP_HOST;
1400 sg_init_table(&sg, 1);
1401 sg_set_page(&sg, test->highmem, size, 0);
1403 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
1412 static int mmc_test_no_highmem(struct mmc_test_card *test)
1414 pr_info("%s: Highmem not configured - test skipped\n",
1415 mmc_hostname(test->card->host));
1419 #endif /* CONFIG_HIGHMEM */
1422 * Map sz bytes so that it can be transferred.
1424 static int mmc_test_area_map(struct mmc_test_card *test, unsigned long sz,
1425 int max_scatter, int min_sg_len)
1427 struct mmc_test_area *t = &test->area;
1430 t->blocks = sz >> 9;
1433 err = mmc_test_map_sg_max_scatter(t->mem, sz, t->sg,
1434 t->max_segs, t->max_seg_sz,
1437 err = mmc_test_map_sg(t->mem, sz, t->sg, 1, t->max_segs,
1438 t->max_seg_sz, &t->sg_len, min_sg_len);
1441 pr_info("%s: Failed to map sg list\n",
1442 mmc_hostname(test->card->host));
1447 * Transfer bytes mapped by mmc_test_area_map().
1449 static int mmc_test_area_transfer(struct mmc_test_card *test,
1450 unsigned int dev_addr, int write)
1452 struct mmc_test_area *t = &test->area;
1454 return mmc_test_simple_transfer(test, t->sg, t->sg_len, dev_addr,
1455 t->blocks, 512, write);
1459 * Map and transfer bytes for multiple transfers.
1461 static int mmc_test_area_io_seq(struct mmc_test_card *test, unsigned long sz,
1462 unsigned int dev_addr, int write,
1463 int max_scatter, int timed, int count,
1464 bool nonblock, int min_sg_len)
1466 struct timespec ts1, ts2;
1469 struct mmc_test_area *t = &test->area;
1472 * In the case of a maximally scattered transfer, the maximum transfer
1473 * size is further limited by using PAGE_SIZE segments.
1476 struct mmc_test_area *t = &test->area;
1477 unsigned long max_tfr;
1479 if (t->max_seg_sz >= PAGE_SIZE)
1480 max_tfr = t->max_segs * PAGE_SIZE;
1482 max_tfr = t->max_segs * t->max_seg_sz;
1487 ret = mmc_test_area_map(test, sz, max_scatter, min_sg_len);
1492 getnstimeofday(&ts1);
1494 ret = mmc_test_nonblock_transfer(test, t->sg, t->sg_len,
1495 dev_addr, t->blocks, 512, write, count);
1497 for (i = 0; i < count && ret == 0; i++) {
1498 ret = mmc_test_area_transfer(test, dev_addr, write);
1499 dev_addr += sz >> 9;
1506 getnstimeofday(&ts2);
1509 mmc_test_print_avg_rate(test, sz, count, &ts1, &ts2);
1514 static int mmc_test_area_io(struct mmc_test_card *test, unsigned long sz,
1515 unsigned int dev_addr, int write, int max_scatter,
1518 return mmc_test_area_io_seq(test, sz, dev_addr, write, max_scatter,
1519 timed, 1, false, 0);
1523 * Write the test area entirely.
1525 static int mmc_test_area_fill(struct mmc_test_card *test)
1527 struct mmc_test_area *t = &test->area;
1529 return mmc_test_area_io(test, t->max_tfr, t->dev_addr, 1, 0, 0);
1533 * Erase the test area entirely.
1535 static int mmc_test_area_erase(struct mmc_test_card *test)
1537 struct mmc_test_area *t = &test->area;
1539 if (!mmc_can_erase(test->card))
1542 return mmc_erase(test->card, t->dev_addr, t->max_sz >> 9,
1547 * Cleanup struct mmc_test_area.
1549 static int mmc_test_area_cleanup(struct mmc_test_card *test)
1551 struct mmc_test_area *t = &test->area;
1554 mmc_test_free_mem(t->mem);
1560 * Initialize an area for testing large transfers. The test area is set to the
1561 * middle of the card because cards may have different charateristics at the
1562 * front (for FAT file system optimization). Optionally, the area is erased
1563 * (if the card supports it) which may improve write performance. Optionally,
1564 * the area is filled with data for subsequent read tests.
1566 static int mmc_test_area_init(struct mmc_test_card *test, int erase, int fill)
1568 struct mmc_test_area *t = &test->area;
1569 unsigned long min_sz = 64 * 1024, sz;
1572 ret = mmc_test_set_blksize(test, 512);
1576 /* Make the test area size about 4MiB */
1577 sz = (unsigned long)test->card->pref_erase << 9;
1579 while (t->max_sz < 4 * 1024 * 1024)
1581 while (t->max_sz > TEST_AREA_MAX_SIZE && t->max_sz > sz)
1584 t->max_segs = test->card->host->max_segs;
1585 t->max_seg_sz = test->card->host->max_seg_size;
1586 t->max_seg_sz -= t->max_seg_sz % 512;
1588 t->max_tfr = t->max_sz;
1589 if (t->max_tfr >> 9 > test->card->host->max_blk_count)
1590 t->max_tfr = test->card->host->max_blk_count << 9;
1591 if (t->max_tfr > test->card->host->max_req_size)
1592 t->max_tfr = test->card->host->max_req_size;
1593 if (t->max_tfr / t->max_seg_sz > t->max_segs)
1594 t->max_tfr = t->max_segs * t->max_seg_sz;
1597 * Try to allocate enough memory for a max. sized transfer. Less is OK
1598 * because the same memory can be mapped into the scatterlist more than
1599 * once. Also, take into account the limits imposed on scatterlist
1600 * segments by the host driver.
1602 t->mem = mmc_test_alloc_mem(min_sz, t->max_tfr, t->max_segs,
1607 t->sg = kmalloc(sizeof(struct scatterlist) * t->max_segs, GFP_KERNEL);
1613 t->dev_addr = mmc_test_capacity(test->card) / 2;
1614 t->dev_addr -= t->dev_addr % (t->max_sz >> 9);
1617 ret = mmc_test_area_erase(test);
1623 ret = mmc_test_area_fill(test);
1631 mmc_test_area_cleanup(test);
1636 * Prepare for large transfers. Do not erase the test area.
1638 static int mmc_test_area_prepare(struct mmc_test_card *test)
1640 return mmc_test_area_init(test, 0, 0);
1644 * Prepare for large transfers. Do erase the test area.
1646 static int mmc_test_area_prepare_erase(struct mmc_test_card *test)
1648 return mmc_test_area_init(test, 1, 0);
1652 * Prepare for large transfers. Erase and fill the test area.
1654 static int mmc_test_area_prepare_fill(struct mmc_test_card *test)
1656 return mmc_test_area_init(test, 1, 1);
1660 * Test best-case performance. Best-case performance is expected from
1661 * a single large transfer.
1663 * An additional option (max_scatter) allows the measurement of the same
1664 * transfer but with no contiguous pages in the scatter list. This tests
1665 * the efficiency of DMA to handle scattered pages.
1667 static int mmc_test_best_performance(struct mmc_test_card *test, int write,
1670 struct mmc_test_area *t = &test->area;
1672 return mmc_test_area_io(test, t->max_tfr, t->dev_addr, write,
1677 * Best-case read performance.
1679 static int mmc_test_best_read_performance(struct mmc_test_card *test)
1681 return mmc_test_best_performance(test, 0, 0);
1685 * Best-case write performance.
1687 static int mmc_test_best_write_performance(struct mmc_test_card *test)
1689 return mmc_test_best_performance(test, 1, 0);
1693 * Best-case read performance into scattered pages.
1695 static int mmc_test_best_read_perf_max_scatter(struct mmc_test_card *test)
1697 return mmc_test_best_performance(test, 0, 1);
1701 * Best-case write performance from scattered pages.
1703 static int mmc_test_best_write_perf_max_scatter(struct mmc_test_card *test)
1705 return mmc_test_best_performance(test, 1, 1);
1709 * Single read performance by transfer size.
1711 static int mmc_test_profile_read_perf(struct mmc_test_card *test)
1713 struct mmc_test_area *t = &test->area;
1715 unsigned int dev_addr;
1718 for (sz = 512; sz < t->max_tfr; sz <<= 1) {
1719 dev_addr = t->dev_addr + (sz >> 9);
1720 ret = mmc_test_area_io(test, sz, dev_addr, 0, 0, 1);
1725 dev_addr = t->dev_addr;
1726 return mmc_test_area_io(test, sz, dev_addr, 0, 0, 1);
1730 * Single write performance by transfer size.
1732 static int mmc_test_profile_write_perf(struct mmc_test_card *test)
1734 struct mmc_test_area *t = &test->area;
1736 unsigned int dev_addr;
1739 ret = mmc_test_area_erase(test);
1742 for (sz = 512; sz < t->max_tfr; sz <<= 1) {
1743 dev_addr = t->dev_addr + (sz >> 9);
1744 ret = mmc_test_area_io(test, sz, dev_addr, 1, 0, 1);
1748 ret = mmc_test_area_erase(test);
1752 dev_addr = t->dev_addr;
1753 return mmc_test_area_io(test, sz, dev_addr, 1, 0, 1);
1757 * Single trim performance by transfer size.
1759 static int mmc_test_profile_trim_perf(struct mmc_test_card *test)
1761 struct mmc_test_area *t = &test->area;
1763 unsigned int dev_addr;
1764 struct timespec ts1, ts2;
1767 if (!mmc_can_trim(test->card))
1768 return RESULT_UNSUP_CARD;
1770 if (!mmc_can_erase(test->card))
1771 return RESULT_UNSUP_HOST;
1773 for (sz = 512; sz < t->max_sz; sz <<= 1) {
1774 dev_addr = t->dev_addr + (sz >> 9);
1775 getnstimeofday(&ts1);
1776 ret = mmc_erase(test->card, dev_addr, sz >> 9, MMC_TRIM_ARG);
1779 getnstimeofday(&ts2);
1780 mmc_test_print_rate(test, sz, &ts1, &ts2);
1782 dev_addr = t->dev_addr;
1783 getnstimeofday(&ts1);
1784 ret = mmc_erase(test->card, dev_addr, sz >> 9, MMC_TRIM_ARG);
1787 getnstimeofday(&ts2);
1788 mmc_test_print_rate(test, sz, &ts1, &ts2);
1792 static int mmc_test_seq_read_perf(struct mmc_test_card *test, unsigned long sz)
1794 struct mmc_test_area *t = &test->area;
1795 unsigned int dev_addr, i, cnt;
1796 struct timespec ts1, ts2;
1799 cnt = t->max_sz / sz;
1800 dev_addr = t->dev_addr;
1801 getnstimeofday(&ts1);
1802 for (i = 0; i < cnt; i++) {
1803 ret = mmc_test_area_io(test, sz, dev_addr, 0, 0, 0);
1806 dev_addr += (sz >> 9);
1808 getnstimeofday(&ts2);
1809 mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2);
1814 * Consecutive read performance by transfer size.
1816 static int mmc_test_profile_seq_read_perf(struct mmc_test_card *test)
1818 struct mmc_test_area *t = &test->area;
1822 for (sz = 512; sz < t->max_tfr; sz <<= 1) {
1823 ret = mmc_test_seq_read_perf(test, sz);
1828 return mmc_test_seq_read_perf(test, sz);
1831 static int mmc_test_seq_write_perf(struct mmc_test_card *test, unsigned long sz)
1833 struct mmc_test_area *t = &test->area;
1834 unsigned int dev_addr, i, cnt;
1835 struct timespec ts1, ts2;
1838 ret = mmc_test_area_erase(test);
1841 cnt = t->max_sz / sz;
1842 dev_addr = t->dev_addr;
1843 getnstimeofday(&ts1);
1844 for (i = 0; i < cnt; i++) {
1845 ret = mmc_test_area_io(test, sz, dev_addr, 1, 0, 0);
1848 dev_addr += (sz >> 9);
1850 getnstimeofday(&ts2);
1851 mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2);
1856 * Consecutive write performance by transfer size.
1858 static int mmc_test_profile_seq_write_perf(struct mmc_test_card *test)
1860 struct mmc_test_area *t = &test->area;
1864 for (sz = 512; sz < t->max_tfr; sz <<= 1) {
1865 ret = mmc_test_seq_write_perf(test, sz);
1870 return mmc_test_seq_write_perf(test, sz);
1874 * Consecutive trim performance by transfer size.
1876 static int mmc_test_profile_seq_trim_perf(struct mmc_test_card *test)
1878 struct mmc_test_area *t = &test->area;
1880 unsigned int dev_addr, i, cnt;
1881 struct timespec ts1, ts2;
1884 if (!mmc_can_trim(test->card))
1885 return RESULT_UNSUP_CARD;
1887 if (!mmc_can_erase(test->card))
1888 return RESULT_UNSUP_HOST;
1890 for (sz = 512; sz <= t->max_sz; sz <<= 1) {
1891 ret = mmc_test_area_erase(test);
1894 ret = mmc_test_area_fill(test);
1897 cnt = t->max_sz / sz;
1898 dev_addr = t->dev_addr;
1899 getnstimeofday(&ts1);
1900 for (i = 0; i < cnt; i++) {
1901 ret = mmc_erase(test->card, dev_addr, sz >> 9,
1905 dev_addr += (sz >> 9);
1907 getnstimeofday(&ts2);
1908 mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2);
1913 static unsigned int rnd_next = 1;
1915 static unsigned int mmc_test_rnd_num(unsigned int rnd_cnt)
1919 rnd_next = rnd_next * 1103515245 + 12345;
1920 r = (rnd_next >> 16) & 0x7fff;
1921 return (r * rnd_cnt) >> 15;
1924 static int mmc_test_rnd_perf(struct mmc_test_card *test, int write, int print,
1927 unsigned int dev_addr, cnt, rnd_addr, range1, range2, last_ea = 0, ea;
1929 struct timespec ts1, ts2, ts;
1934 rnd_addr = mmc_test_capacity(test->card) / 4;
1935 range1 = rnd_addr / test->card->pref_erase;
1936 range2 = range1 / ssz;
1938 getnstimeofday(&ts1);
1939 for (cnt = 0; cnt < UINT_MAX; cnt++) {
1940 getnstimeofday(&ts2);
1941 ts = timespec_sub(ts2, ts1);
1942 if (ts.tv_sec >= 10)
1944 ea = mmc_test_rnd_num(range1);
1948 dev_addr = rnd_addr + test->card->pref_erase * ea +
1949 ssz * mmc_test_rnd_num(range2);
1950 ret = mmc_test_area_io(test, sz, dev_addr, write, 0, 0);
1955 mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2);
1959 static int mmc_test_random_perf(struct mmc_test_card *test, int write)
1961 struct mmc_test_area *t = &test->area;
1966 for (sz = 512; sz < t->max_tfr; sz <<= 1) {
1968 * When writing, try to get more consistent results by running
1969 * the test twice with exactly the same I/O but outputting the
1970 * results only for the 2nd run.
1974 ret = mmc_test_rnd_perf(test, write, 0, sz);
1979 ret = mmc_test_rnd_perf(test, write, 1, sz);
1986 ret = mmc_test_rnd_perf(test, write, 0, sz);
1991 return mmc_test_rnd_perf(test, write, 1, sz);
1995 * Random read performance by transfer size.
1997 static int mmc_test_random_read_perf(struct mmc_test_card *test)
1999 return mmc_test_random_perf(test, 0);
2003 * Random write performance by transfer size.
2005 static int mmc_test_random_write_perf(struct mmc_test_card *test)
2007 return mmc_test_random_perf(test, 1);
2010 static int mmc_test_seq_perf(struct mmc_test_card *test, int write,
2011 unsigned int tot_sz, int max_scatter)
2013 struct mmc_test_area *t = &test->area;
2014 unsigned int dev_addr, i, cnt, sz, ssz;
2015 struct timespec ts1, ts2;
2021 * In the case of a maximally scattered transfer, the maximum transfer
2022 * size is further limited by using PAGE_SIZE segments.
2025 unsigned long max_tfr;
2027 if (t->max_seg_sz >= PAGE_SIZE)
2028 max_tfr = t->max_segs * PAGE_SIZE;
2030 max_tfr = t->max_segs * t->max_seg_sz;
2036 dev_addr = mmc_test_capacity(test->card) / 4;
2037 if (tot_sz > dev_addr << 9)
2038 tot_sz = dev_addr << 9;
2040 dev_addr &= 0xffff0000; /* Round to 64MiB boundary */
2042 getnstimeofday(&ts1);
2043 for (i = 0; i < cnt; i++) {
2044 ret = mmc_test_area_io(test, sz, dev_addr, write,
2050 getnstimeofday(&ts2);
2052 mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2);
2057 static int mmc_test_large_seq_perf(struct mmc_test_card *test, int write)
2061 for (i = 0; i < 10; i++) {
2062 ret = mmc_test_seq_perf(test, write, 10 * 1024 * 1024, 1);
2066 for (i = 0; i < 5; i++) {
2067 ret = mmc_test_seq_perf(test, write, 100 * 1024 * 1024, 1);
2071 for (i = 0; i < 3; i++) {
2072 ret = mmc_test_seq_perf(test, write, 1000 * 1024 * 1024, 1);
2081 * Large sequential read performance.
2083 static int mmc_test_large_seq_read_perf(struct mmc_test_card *test)
2085 return mmc_test_large_seq_perf(test, 0);
2089 * Large sequential write performance.
2091 static int mmc_test_large_seq_write_perf(struct mmc_test_card *test)
2093 return mmc_test_large_seq_perf(test, 1);
2096 static int mmc_test_rw_multiple(struct mmc_test_card *test,
2097 struct mmc_test_multiple_rw *tdata,
2098 unsigned int reqsize, unsigned int size,
2101 unsigned int dev_addr;
2102 struct mmc_test_area *t = &test->area;
2105 /* Set up test area */
2106 if (size > mmc_test_capacity(test->card) / 2 * 512)
2107 size = mmc_test_capacity(test->card) / 2 * 512;
2108 if (reqsize > t->max_tfr)
2109 reqsize = t->max_tfr;
2110 dev_addr = mmc_test_capacity(test->card) / 4;
2111 if ((dev_addr & 0xffff0000))
2112 dev_addr &= 0xffff0000; /* Round to 64MiB boundary */
2114 dev_addr &= 0xfffff800; /* Round to 1MiB boundary */
2121 /* prepare test area */
2122 if (mmc_can_erase(test->card) &&
2123 tdata->prepare & MMC_TEST_PREP_ERASE) {
2124 ret = mmc_erase(test->card, dev_addr,
2125 size / 512, MMC_SECURE_ERASE_ARG);
2127 ret = mmc_erase(test->card, dev_addr,
2128 size / 512, MMC_ERASE_ARG);
2134 ret = mmc_test_area_io_seq(test, reqsize, dev_addr,
2135 tdata->do_write, 0, 1, size / reqsize,
2136 tdata->do_nonblock_req, min_sg_len);
2142 pr_info("[%s] error\n", __func__);
2146 static int mmc_test_rw_multiple_size(struct mmc_test_card *test,
2147 struct mmc_test_multiple_rw *rw)
2151 void *pre_req = test->card->host->ops->pre_req;
2152 void *post_req = test->card->host->ops->post_req;
2154 if (rw->do_nonblock_req &&
2155 ((!pre_req && post_req) || (pre_req && !post_req))) {
2156 pr_info("error: only one of pre/post is defined\n");
2160 for (i = 0 ; i < rw->len && ret == 0; i++) {
2161 ret = mmc_test_rw_multiple(test, rw, rw->bs[i], rw->size, 0);
2168 static int mmc_test_rw_multiple_sg_len(struct mmc_test_card *test,
2169 struct mmc_test_multiple_rw *rw)
2174 for (i = 0 ; i < rw->len && ret == 0; i++) {
2175 ret = mmc_test_rw_multiple(test, rw, 512*1024, rw->size,
2184 * Multiple blocking write 4k to 4 MB chunks
2186 static int mmc_test_profile_mult_write_blocking_perf(struct mmc_test_card *test)
2188 unsigned int bs[] = {1 << 12, 1 << 13, 1 << 14, 1 << 15, 1 << 16,
2189 1 << 17, 1 << 18, 1 << 19, 1 << 20, 1 << 22};
2190 struct mmc_test_multiple_rw test_data = {
2192 .size = TEST_AREA_MAX_SIZE,
2193 .len = ARRAY_SIZE(bs),
2195 .do_nonblock_req = false,
2196 .prepare = MMC_TEST_PREP_ERASE,
2199 return mmc_test_rw_multiple_size(test, &test_data);
2203 * Multiple non-blocking write 4k to 4 MB chunks
2205 static int mmc_test_profile_mult_write_nonblock_perf(struct mmc_test_card *test)
2207 unsigned int bs[] = {1 << 12, 1 << 13, 1 << 14, 1 << 15, 1 << 16,
2208 1 << 17, 1 << 18, 1 << 19, 1 << 20, 1 << 22};
2209 struct mmc_test_multiple_rw test_data = {
2211 .size = TEST_AREA_MAX_SIZE,
2212 .len = ARRAY_SIZE(bs),
2214 .do_nonblock_req = true,
2215 .prepare = MMC_TEST_PREP_ERASE,
2218 return mmc_test_rw_multiple_size(test, &test_data);
2222 * Multiple blocking read 4k to 4 MB chunks
2224 static int mmc_test_profile_mult_read_blocking_perf(struct mmc_test_card *test)
2226 unsigned int bs[] = {1 << 12, 1 << 13, 1 << 14, 1 << 15, 1 << 16,
2227 1 << 17, 1 << 18, 1 << 19, 1 << 20, 1 << 22};
2228 struct mmc_test_multiple_rw test_data = {
2230 .size = TEST_AREA_MAX_SIZE,
2231 .len = ARRAY_SIZE(bs),
2233 .do_nonblock_req = false,
2234 .prepare = MMC_TEST_PREP_NONE,
2237 return mmc_test_rw_multiple_size(test, &test_data);
2241 * Multiple non-blocking read 4k to 4 MB chunks
2243 static int mmc_test_profile_mult_read_nonblock_perf(struct mmc_test_card *test)
2245 unsigned int bs[] = {1 << 12, 1 << 13, 1 << 14, 1 << 15, 1 << 16,
2246 1 << 17, 1 << 18, 1 << 19, 1 << 20, 1 << 22};
2247 struct mmc_test_multiple_rw test_data = {
2249 .size = TEST_AREA_MAX_SIZE,
2250 .len = ARRAY_SIZE(bs),
2252 .do_nonblock_req = true,
2253 .prepare = MMC_TEST_PREP_NONE,
2256 return mmc_test_rw_multiple_size(test, &test_data);
2260 * Multiple blocking write 1 to 512 sg elements
2262 static int mmc_test_profile_sglen_wr_blocking_perf(struct mmc_test_card *test)
2264 unsigned int sg_len[] = {1, 1 << 3, 1 << 4, 1 << 5, 1 << 6,
2265 1 << 7, 1 << 8, 1 << 9};
2266 struct mmc_test_multiple_rw test_data = {
2268 .size = TEST_AREA_MAX_SIZE,
2269 .len = ARRAY_SIZE(sg_len),
2271 .do_nonblock_req = false,
2272 .prepare = MMC_TEST_PREP_ERASE,
2275 return mmc_test_rw_multiple_sg_len(test, &test_data);
2279 * Multiple non-blocking write 1 to 512 sg elements
2281 static int mmc_test_profile_sglen_wr_nonblock_perf(struct mmc_test_card *test)
2283 unsigned int sg_len[] = {1, 1 << 3, 1 << 4, 1 << 5, 1 << 6,
2284 1 << 7, 1 << 8, 1 << 9};
2285 struct mmc_test_multiple_rw test_data = {
2287 .size = TEST_AREA_MAX_SIZE,
2288 .len = ARRAY_SIZE(sg_len),
2290 .do_nonblock_req = true,
2291 .prepare = MMC_TEST_PREP_ERASE,
2294 return mmc_test_rw_multiple_sg_len(test, &test_data);
2298 * Multiple blocking read 1 to 512 sg elements
2300 static int mmc_test_profile_sglen_r_blocking_perf(struct mmc_test_card *test)
2302 unsigned int sg_len[] = {1, 1 << 3, 1 << 4, 1 << 5, 1 << 6,
2303 1 << 7, 1 << 8, 1 << 9};
2304 struct mmc_test_multiple_rw test_data = {
2306 .size = TEST_AREA_MAX_SIZE,
2307 .len = ARRAY_SIZE(sg_len),
2309 .do_nonblock_req = false,
2310 .prepare = MMC_TEST_PREP_NONE,
2313 return mmc_test_rw_multiple_sg_len(test, &test_data);
2317 * Multiple non-blocking read 1 to 512 sg elements
2319 static int mmc_test_profile_sglen_r_nonblock_perf(struct mmc_test_card *test)
2321 unsigned int sg_len[] = {1, 1 << 3, 1 << 4, 1 << 5, 1 << 6,
2322 1 << 7, 1 << 8, 1 << 9};
2323 struct mmc_test_multiple_rw test_data = {
2325 .size = TEST_AREA_MAX_SIZE,
2326 .len = ARRAY_SIZE(sg_len),
2328 .do_nonblock_req = true,
2329 .prepare = MMC_TEST_PREP_NONE,
2332 return mmc_test_rw_multiple_sg_len(test, &test_data);
2336 * eMMC hardware reset.
2338 static int mmc_test_hw_reset(struct mmc_test_card *test)
2340 struct mmc_card *card = test->card;
2341 struct mmc_host *host = card->host;
2344 if (!mmc_card_mmc(card) || !mmc_can_reset(card))
2345 return RESULT_UNSUP_CARD;
2347 err = mmc_hw_reset(host);
2350 else if (err == -EOPNOTSUPP)
2351 return RESULT_UNSUP_HOST;
2356 static const struct mmc_test_case mmc_test_cases[] = {
2358 .name = "Basic write (no data verification)",
2359 .run = mmc_test_basic_write,
2363 .name = "Basic read (no data verification)",
2364 .run = mmc_test_basic_read,
2368 .name = "Basic write (with data verification)",
2369 .prepare = mmc_test_prepare_write,
2370 .run = mmc_test_verify_write,
2371 .cleanup = mmc_test_cleanup,
2375 .name = "Basic read (with data verification)",
2376 .prepare = mmc_test_prepare_read,
2377 .run = mmc_test_verify_read,
2378 .cleanup = mmc_test_cleanup,
2382 .name = "Multi-block write",
2383 .prepare = mmc_test_prepare_write,
2384 .run = mmc_test_multi_write,
2385 .cleanup = mmc_test_cleanup,
2389 .name = "Multi-block read",
2390 .prepare = mmc_test_prepare_read,
2391 .run = mmc_test_multi_read,
2392 .cleanup = mmc_test_cleanup,
2396 .name = "Power of two block writes",
2397 .prepare = mmc_test_prepare_write,
2398 .run = mmc_test_pow2_write,
2399 .cleanup = mmc_test_cleanup,
2403 .name = "Power of two block reads",
2404 .prepare = mmc_test_prepare_read,
2405 .run = mmc_test_pow2_read,
2406 .cleanup = mmc_test_cleanup,
2410 .name = "Weird sized block writes",
2411 .prepare = mmc_test_prepare_write,
2412 .run = mmc_test_weird_write,
2413 .cleanup = mmc_test_cleanup,
2417 .name = "Weird sized block reads",
2418 .prepare = mmc_test_prepare_read,
2419 .run = mmc_test_weird_read,
2420 .cleanup = mmc_test_cleanup,
2424 .name = "Badly aligned write",
2425 .prepare = mmc_test_prepare_write,
2426 .run = mmc_test_align_write,
2427 .cleanup = mmc_test_cleanup,
2431 .name = "Badly aligned read",
2432 .prepare = mmc_test_prepare_read,
2433 .run = mmc_test_align_read,
2434 .cleanup = mmc_test_cleanup,
2438 .name = "Badly aligned multi-block write",
2439 .prepare = mmc_test_prepare_write,
2440 .run = mmc_test_align_multi_write,
2441 .cleanup = mmc_test_cleanup,
2445 .name = "Badly aligned multi-block read",
2446 .prepare = mmc_test_prepare_read,
2447 .run = mmc_test_align_multi_read,
2448 .cleanup = mmc_test_cleanup,
2452 .name = "Correct xfer_size at write (start failure)",
2453 .run = mmc_test_xfersize_write,
2457 .name = "Correct xfer_size at read (start failure)",
2458 .run = mmc_test_xfersize_read,
2462 .name = "Correct xfer_size at write (midway failure)",
2463 .run = mmc_test_multi_xfersize_write,
2467 .name = "Correct xfer_size at read (midway failure)",
2468 .run = mmc_test_multi_xfersize_read,
2471 #ifdef CONFIG_HIGHMEM
2474 .name = "Highmem write",
2475 .prepare = mmc_test_prepare_write,
2476 .run = mmc_test_write_high,
2477 .cleanup = mmc_test_cleanup,
2481 .name = "Highmem read",
2482 .prepare = mmc_test_prepare_read,
2483 .run = mmc_test_read_high,
2484 .cleanup = mmc_test_cleanup,
2488 .name = "Multi-block highmem write",
2489 .prepare = mmc_test_prepare_write,
2490 .run = mmc_test_multi_write_high,
2491 .cleanup = mmc_test_cleanup,
2495 .name = "Multi-block highmem read",
2496 .prepare = mmc_test_prepare_read,
2497 .run = mmc_test_multi_read_high,
2498 .cleanup = mmc_test_cleanup,
2504 .name = "Highmem write",
2505 .run = mmc_test_no_highmem,
2509 .name = "Highmem read",
2510 .run = mmc_test_no_highmem,
2514 .name = "Multi-block highmem write",
2515 .run = mmc_test_no_highmem,
2519 .name = "Multi-block highmem read",
2520 .run = mmc_test_no_highmem,
2523 #endif /* CONFIG_HIGHMEM */
2526 .name = "Best-case read performance",
2527 .prepare = mmc_test_area_prepare_fill,
2528 .run = mmc_test_best_read_performance,
2529 .cleanup = mmc_test_area_cleanup,
2533 .name = "Best-case write performance",
2534 .prepare = mmc_test_area_prepare_erase,
2535 .run = mmc_test_best_write_performance,
2536 .cleanup = mmc_test_area_cleanup,
2540 .name = "Best-case read performance into scattered pages",
2541 .prepare = mmc_test_area_prepare_fill,
2542 .run = mmc_test_best_read_perf_max_scatter,
2543 .cleanup = mmc_test_area_cleanup,
2547 .name = "Best-case write performance from scattered pages",
2548 .prepare = mmc_test_area_prepare_erase,
2549 .run = mmc_test_best_write_perf_max_scatter,
2550 .cleanup = mmc_test_area_cleanup,
2554 .name = "Single read performance by transfer size",
2555 .prepare = mmc_test_area_prepare_fill,
2556 .run = mmc_test_profile_read_perf,
2557 .cleanup = mmc_test_area_cleanup,
2561 .name = "Single write performance by transfer size",
2562 .prepare = mmc_test_area_prepare,
2563 .run = mmc_test_profile_write_perf,
2564 .cleanup = mmc_test_area_cleanup,
2568 .name = "Single trim performance by transfer size",
2569 .prepare = mmc_test_area_prepare_fill,
2570 .run = mmc_test_profile_trim_perf,
2571 .cleanup = mmc_test_area_cleanup,
2575 .name = "Consecutive read performance by transfer size",
2576 .prepare = mmc_test_area_prepare_fill,
2577 .run = mmc_test_profile_seq_read_perf,
2578 .cleanup = mmc_test_area_cleanup,
2582 .name = "Consecutive write performance by transfer size",
2583 .prepare = mmc_test_area_prepare,
2584 .run = mmc_test_profile_seq_write_perf,
2585 .cleanup = mmc_test_area_cleanup,
2589 .name = "Consecutive trim performance by transfer size",
2590 .prepare = mmc_test_area_prepare,
2591 .run = mmc_test_profile_seq_trim_perf,
2592 .cleanup = mmc_test_area_cleanup,
2596 .name = "Random read performance by transfer size",
2597 .prepare = mmc_test_area_prepare,
2598 .run = mmc_test_random_read_perf,
2599 .cleanup = mmc_test_area_cleanup,
2603 .name = "Random write performance by transfer size",
2604 .prepare = mmc_test_area_prepare,
2605 .run = mmc_test_random_write_perf,
2606 .cleanup = mmc_test_area_cleanup,
2610 .name = "Large sequential read into scattered pages",
2611 .prepare = mmc_test_area_prepare,
2612 .run = mmc_test_large_seq_read_perf,
2613 .cleanup = mmc_test_area_cleanup,
2617 .name = "Large sequential write from scattered pages",
2618 .prepare = mmc_test_area_prepare,
2619 .run = mmc_test_large_seq_write_perf,
2620 .cleanup = mmc_test_area_cleanup,
2624 .name = "Write performance with blocking req 4k to 4MB",
2625 .prepare = mmc_test_area_prepare,
2626 .run = mmc_test_profile_mult_write_blocking_perf,
2627 .cleanup = mmc_test_area_cleanup,
2631 .name = "Write performance with non-blocking req 4k to 4MB",
2632 .prepare = mmc_test_area_prepare,
2633 .run = mmc_test_profile_mult_write_nonblock_perf,
2634 .cleanup = mmc_test_area_cleanup,
2638 .name = "Read performance with blocking req 4k to 4MB",
2639 .prepare = mmc_test_area_prepare,
2640 .run = mmc_test_profile_mult_read_blocking_perf,
2641 .cleanup = mmc_test_area_cleanup,
2645 .name = "Read performance with non-blocking req 4k to 4MB",
2646 .prepare = mmc_test_area_prepare,
2647 .run = mmc_test_profile_mult_read_nonblock_perf,
2648 .cleanup = mmc_test_area_cleanup,
2652 .name = "Write performance blocking req 1 to 512 sg elems",
2653 .prepare = mmc_test_area_prepare,
2654 .run = mmc_test_profile_sglen_wr_blocking_perf,
2655 .cleanup = mmc_test_area_cleanup,
2659 .name = "Write performance non-blocking req 1 to 512 sg elems",
2660 .prepare = mmc_test_area_prepare,
2661 .run = mmc_test_profile_sglen_wr_nonblock_perf,
2662 .cleanup = mmc_test_area_cleanup,
2666 .name = "Read performance blocking req 1 to 512 sg elems",
2667 .prepare = mmc_test_area_prepare,
2668 .run = mmc_test_profile_sglen_r_blocking_perf,
2669 .cleanup = mmc_test_area_cleanup,
2673 .name = "Read performance non-blocking req 1 to 512 sg elems",
2674 .prepare = mmc_test_area_prepare,
2675 .run = mmc_test_profile_sglen_r_nonblock_perf,
2676 .cleanup = mmc_test_area_cleanup,
2680 .name = "eMMC hardware reset",
2681 .run = mmc_test_hw_reset,
2685 static DEFINE_MUTEX(mmc_test_lock);
2687 static LIST_HEAD(mmc_test_result);
2689 static void mmc_test_run(struct mmc_test_card *test, int testcase)
2693 pr_info("%s: Starting tests of card %s...\n",
2694 mmc_hostname(test->card->host), mmc_card_id(test->card));
2696 mmc_claim_host(test->card->host);
2698 for (i = 0;i < ARRAY_SIZE(mmc_test_cases);i++) {
2699 struct mmc_test_general_result *gr;
2701 if (testcase && ((i + 1) != testcase))
2704 pr_info("%s: Test case %d. %s...\n",
2705 mmc_hostname(test->card->host), i + 1,
2706 mmc_test_cases[i].name);
2708 if (mmc_test_cases[i].prepare) {
2709 ret = mmc_test_cases[i].prepare(test);
2711 pr_info("%s: Result: Prepare "
2712 "stage failed! (%d)\n",
2713 mmc_hostname(test->card->host),
2719 gr = kzalloc(sizeof(struct mmc_test_general_result),
2722 INIT_LIST_HEAD(&gr->tr_lst);
2724 /* Assign data what we know already */
2725 gr->card = test->card;
2728 /* Append container to global one */
2729 list_add_tail(&gr->link, &mmc_test_result);
2732 * Save the pointer to created container in our private
2738 ret = mmc_test_cases[i].run(test);
2741 pr_info("%s: Result: OK\n",
2742 mmc_hostname(test->card->host));
2745 pr_info("%s: Result: FAILED\n",
2746 mmc_hostname(test->card->host));
2748 case RESULT_UNSUP_HOST:
2749 pr_info("%s: Result: UNSUPPORTED "
2751 mmc_hostname(test->card->host));
2753 case RESULT_UNSUP_CARD:
2754 pr_info("%s: Result: UNSUPPORTED "
2756 mmc_hostname(test->card->host));
2759 pr_info("%s: Result: ERROR (%d)\n",
2760 mmc_hostname(test->card->host), ret);
2763 /* Save the result */
2767 if (mmc_test_cases[i].cleanup) {
2768 ret = mmc_test_cases[i].cleanup(test);
2770 pr_info("%s: Warning: Cleanup "
2771 "stage failed! (%d)\n",
2772 mmc_hostname(test->card->host),
2778 mmc_release_host(test->card->host);
2780 pr_info("%s: Tests completed.\n",
2781 mmc_hostname(test->card->host));
2784 static void mmc_test_free_result(struct mmc_card *card)
2786 struct mmc_test_general_result *gr, *grs;
2788 mutex_lock(&mmc_test_lock);
2790 list_for_each_entry_safe(gr, grs, &mmc_test_result, link) {
2791 struct mmc_test_transfer_result *tr, *trs;
2793 if (card && gr->card != card)
2796 list_for_each_entry_safe(tr, trs, &gr->tr_lst, link) {
2797 list_del(&tr->link);
2801 list_del(&gr->link);
2805 mutex_unlock(&mmc_test_lock);
2808 static LIST_HEAD(mmc_test_file_test);
2810 static int mtf_test_show(struct seq_file *sf, void *data)
2812 struct mmc_card *card = (struct mmc_card *)sf->private;
2813 struct mmc_test_general_result *gr;
2815 mutex_lock(&mmc_test_lock);
2817 list_for_each_entry(gr, &mmc_test_result, link) {
2818 struct mmc_test_transfer_result *tr;
2820 if (gr->card != card)
2823 seq_printf(sf, "Test %d: %d\n", gr->testcase + 1, gr->result);
2825 list_for_each_entry(tr, &gr->tr_lst, link) {
2826 seq_printf(sf, "%u %d %lu.%09lu %u %u.%02u\n",
2827 tr->count, tr->sectors,
2828 (unsigned long)tr->ts.tv_sec,
2829 (unsigned long)tr->ts.tv_nsec,
2830 tr->rate, tr->iops / 100, tr->iops % 100);
2834 mutex_unlock(&mmc_test_lock);
2839 static int mtf_test_open(struct inode *inode, struct file *file)
2841 return single_open(file, mtf_test_show, inode->i_private);
2844 static ssize_t mtf_test_write(struct file *file, const char __user *buf,
2845 size_t count, loff_t *pos)
2847 struct seq_file *sf = (struct seq_file *)file->private_data;
2848 struct mmc_card *card = (struct mmc_card *)sf->private;
2849 struct mmc_test_card *test;
2853 ret = kstrtol_from_user(buf, count, 10, &testcase);
2857 test = kzalloc(sizeof(struct mmc_test_card), GFP_KERNEL);
2862 * Remove all test cases associated with given card. Thus we have only
2863 * actual data of the last run.
2865 mmc_test_free_result(card);
2869 test->buffer = kzalloc(BUFFER_SIZE, GFP_KERNEL);
2870 #ifdef CONFIG_HIGHMEM
2871 test->highmem = alloc_pages(GFP_KERNEL | __GFP_HIGHMEM, BUFFER_ORDER);
2874 #ifdef CONFIG_HIGHMEM
2875 if (test->buffer && test->highmem) {
2879 mutex_lock(&mmc_test_lock);
2880 mmc_test_run(test, testcase);
2881 mutex_unlock(&mmc_test_lock);
2884 #ifdef CONFIG_HIGHMEM
2885 __free_pages(test->highmem, BUFFER_ORDER);
2887 kfree(test->buffer);
2893 static const struct file_operations mmc_test_fops_test = {
2894 .open = mtf_test_open,
2896 .write = mtf_test_write,
2897 .llseek = seq_lseek,
2898 .release = single_release,
2901 static int mtf_testlist_show(struct seq_file *sf, void *data)
2905 mutex_lock(&mmc_test_lock);
2907 for (i = 0; i < ARRAY_SIZE(mmc_test_cases); i++)
2908 seq_printf(sf, "%d:\t%s\n", i+1, mmc_test_cases[i].name);
2910 mutex_unlock(&mmc_test_lock);
2915 static int mtf_testlist_open(struct inode *inode, struct file *file)
2917 return single_open(file, mtf_testlist_show, inode->i_private);
2920 static const struct file_operations mmc_test_fops_testlist = {
2921 .open = mtf_testlist_open,
2923 .llseek = seq_lseek,
2924 .release = single_release,
2927 static void mmc_test_free_dbgfs_file(struct mmc_card *card)
2929 struct mmc_test_dbgfs_file *df, *dfs;
2931 mutex_lock(&mmc_test_lock);
2933 list_for_each_entry_safe(df, dfs, &mmc_test_file_test, link) {
2934 if (card && df->card != card)
2936 debugfs_remove(df->file);
2937 list_del(&df->link);
2941 mutex_unlock(&mmc_test_lock);
2944 static int __mmc_test_register_dbgfs_file(struct mmc_card *card,
2945 const char *name, umode_t mode, const struct file_operations *fops)
2947 struct dentry *file = NULL;
2948 struct mmc_test_dbgfs_file *df;
2950 if (card->debugfs_root)
2951 file = debugfs_create_file(name, mode, card->debugfs_root,
2954 if (IS_ERR_OR_NULL(file)) {
2956 "Can't create %s. Perhaps debugfs is disabled.\n",
2961 df = kmalloc(sizeof(struct mmc_test_dbgfs_file), GFP_KERNEL);
2963 debugfs_remove(file);
2965 "Can't allocate memory for internal usage.\n");
2972 list_add(&df->link, &mmc_test_file_test);
2976 static int mmc_test_register_dbgfs_file(struct mmc_card *card)
2980 mutex_lock(&mmc_test_lock);
2982 ret = __mmc_test_register_dbgfs_file(card, "test", S_IWUSR | S_IRUGO,
2983 &mmc_test_fops_test);
2987 ret = __mmc_test_register_dbgfs_file(card, "testlist", S_IRUGO,
2988 &mmc_test_fops_testlist);
2993 mutex_unlock(&mmc_test_lock);
2998 static int mmc_test_probe(struct mmc_card *card)
3002 if (!mmc_card_mmc(card) && !mmc_card_sd(card))
3005 ret = mmc_test_register_dbgfs_file(card);
3009 dev_info(&card->dev, "Card claimed for testing.\n");
3014 static void mmc_test_remove(struct mmc_card *card)
3016 mmc_test_free_result(card);
3017 mmc_test_free_dbgfs_file(card);
3020 static void mmc_test_shutdown(struct mmc_card *card)
3024 static struct mmc_driver mmc_driver = {
3028 .probe = mmc_test_probe,
3029 .remove = mmc_test_remove,
3030 .shutdown = mmc_test_shutdown,
3033 static int __init mmc_test_init(void)
3035 return mmc_register_driver(&mmc_driver);
3038 static void __exit mmc_test_exit(void)
3040 /* Clear stalled data if card is still plugged */
3041 mmc_test_free_result(NULL);
3042 mmc_test_free_dbgfs_file(NULL);
3044 mmc_unregister_driver(&mmc_driver);
3047 module_init(mmc_test_init);
3048 module_exit(mmc_test_exit);
3050 MODULE_LICENSE("GPL");
3051 MODULE_DESCRIPTION("Multimedia Card (MMC) host test driver");
3052 MODULE_AUTHOR("Pierre Ossman");