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() */
23 #define RESULT_UNSUP_HOST 2
24 #define RESULT_UNSUP_CARD 3
26 #define BUFFER_ORDER 2
27 #define BUFFER_SIZE (PAGE_SIZE << BUFFER_ORDER)
30 * Limit the test area size to the maximum MMC HC erase group size. Note that
31 * the maximum SD allocation unit size is just 4MiB.
33 #define TEST_AREA_MAX_SIZE (128 * 1024 * 1024)
36 * struct mmc_test_pages - pages allocated by 'alloc_pages()'.
37 * @page: first page in the allocation
38 * @order: order of the number of pages allocated
40 struct mmc_test_pages {
46 * struct mmc_test_mem - allocated memory.
47 * @arr: array of allocations
48 * @cnt: number of allocations
51 struct mmc_test_pages *arr;
56 * struct mmc_test_area - information for performance tests.
57 * @max_sz: test area size (in bytes)
58 * @dev_addr: address on card at which to do performance tests
59 * @max_tfr: maximum transfer size allowed by driver (in bytes)
60 * @max_segs: maximum segments allowed by driver in scatterlist @sg
61 * @max_seg_sz: maximum segment size allowed by driver
62 * @blocks: number of (512 byte) blocks currently mapped by @sg
63 * @sg_len: length of currently mapped scatterlist @sg
64 * @mem: allocated memory
67 struct mmc_test_area {
69 unsigned int dev_addr;
71 unsigned int max_segs;
72 unsigned int max_seg_sz;
75 struct mmc_test_mem *mem;
76 struct scatterlist *sg;
80 * struct mmc_test_card - test information.
81 * @card: card under test
82 * @scratch: transfer buffer
83 * @buffer: transfer buffer
84 * @highmem: buffer for highmem tests
85 * @area: information for performance tests
87 struct mmc_test_card {
88 struct mmc_card *card;
90 u8 scratch[BUFFER_SIZE];
95 struct mmc_test_area area;
98 /*******************************************************************/
99 /* General helper functions */
100 /*******************************************************************/
103 * Configure correct block size in card
105 static int mmc_test_set_blksize(struct mmc_test_card *test, unsigned size)
107 struct mmc_command cmd;
110 cmd.opcode = MMC_SET_BLOCKLEN;
112 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
113 ret = mmc_wait_for_cmd(test->card->host, &cmd, 0);
121 * Fill in the mmc_request structure given a set of transfer parameters.
123 static void mmc_test_prepare_mrq(struct mmc_test_card *test,
124 struct mmc_request *mrq, struct scatterlist *sg, unsigned sg_len,
125 unsigned dev_addr, unsigned blocks, unsigned blksz, int write)
127 BUG_ON(!mrq || !mrq->cmd || !mrq->data || !mrq->stop);
130 mrq->cmd->opcode = write ?
131 MMC_WRITE_MULTIPLE_BLOCK : MMC_READ_MULTIPLE_BLOCK;
133 mrq->cmd->opcode = write ?
134 MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK;
137 mrq->cmd->arg = dev_addr;
138 if (!mmc_card_blockaddr(test->card))
141 mrq->cmd->flags = MMC_RSP_R1 | MMC_CMD_ADTC;
146 mrq->stop->opcode = MMC_STOP_TRANSMISSION;
148 mrq->stop->flags = MMC_RSP_R1B | MMC_CMD_AC;
151 mrq->data->blksz = blksz;
152 mrq->data->blocks = blocks;
153 mrq->data->flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
155 mrq->data->sg_len = sg_len;
157 mmc_set_data_timeout(mrq->data, test->card);
160 static int mmc_test_busy(struct mmc_command *cmd)
162 return !(cmd->resp[0] & R1_READY_FOR_DATA) ||
163 (R1_CURRENT_STATE(cmd->resp[0]) == 7);
167 * Wait for the card to finish the busy state
169 static int mmc_test_wait_busy(struct mmc_test_card *test)
172 struct mmc_command cmd;
176 memset(&cmd, 0, sizeof(struct mmc_command));
178 cmd.opcode = MMC_SEND_STATUS;
179 cmd.arg = test->card->rca << 16;
180 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
182 ret = mmc_wait_for_cmd(test->card->host, &cmd, 0);
186 if (!busy && mmc_test_busy(&cmd)) {
188 printk(KERN_INFO "%s: Warning: Host did not "
189 "wait for busy state to end.\n",
190 mmc_hostname(test->card->host));
192 } while (mmc_test_busy(&cmd));
198 * Transfer a single sector of kernel addressable data
200 static int mmc_test_buffer_transfer(struct mmc_test_card *test,
201 u8 *buffer, unsigned addr, unsigned blksz, int write)
205 struct mmc_request mrq;
206 struct mmc_command cmd;
207 struct mmc_command stop;
208 struct mmc_data data;
210 struct scatterlist sg;
212 memset(&mrq, 0, sizeof(struct mmc_request));
213 memset(&cmd, 0, sizeof(struct mmc_command));
214 memset(&data, 0, sizeof(struct mmc_data));
215 memset(&stop, 0, sizeof(struct mmc_command));
221 sg_init_one(&sg, buffer, blksz);
223 mmc_test_prepare_mrq(test, &mrq, &sg, 1, addr, 1, blksz, write);
225 mmc_wait_for_req(test->card->host, &mrq);
232 ret = mmc_test_wait_busy(test);
239 static void mmc_test_free_mem(struct mmc_test_mem *mem)
244 __free_pages(mem->arr[mem->cnt].page,
245 mem->arr[mem->cnt].order);
251 * Allocate a lot of memory, preferrably max_sz but at least min_sz. In case
252 * there isn't much memory do not exceed 1/16th total lowmem pages. Also do
253 * not exceed a maximum number of segments and try not to make segments much
254 * bigger than maximum segment size.
256 static struct mmc_test_mem *mmc_test_alloc_mem(unsigned long min_sz,
257 unsigned long max_sz,
258 unsigned int max_segs,
259 unsigned int max_seg_sz)
261 unsigned long max_page_cnt = DIV_ROUND_UP(max_sz, PAGE_SIZE);
262 unsigned long min_page_cnt = DIV_ROUND_UP(min_sz, PAGE_SIZE);
263 unsigned long max_seg_page_cnt = DIV_ROUND_UP(max_seg_sz, PAGE_SIZE);
264 unsigned long page_cnt = 0;
265 unsigned long limit = nr_free_buffer_pages() >> 4;
266 struct mmc_test_mem *mem;
268 if (max_page_cnt > limit)
269 max_page_cnt = limit;
270 if (max_page_cnt < min_page_cnt)
271 max_page_cnt = min_page_cnt;
273 if (max_seg_page_cnt > max_page_cnt)
274 max_seg_page_cnt = max_page_cnt;
276 if (max_segs > max_page_cnt)
277 max_segs = max_page_cnt;
279 mem = kzalloc(sizeof(struct mmc_test_mem), GFP_KERNEL);
283 mem->arr = kzalloc(sizeof(struct mmc_test_pages) * max_segs,
288 while (max_page_cnt) {
291 gfp_t flags = GFP_KERNEL | GFP_DMA | __GFP_NOWARN |
294 order = get_order(max_seg_page_cnt << PAGE_SHIFT);
296 page = alloc_pages(flags, order);
302 if (page_cnt < min_page_cnt)
306 mem->arr[mem->cnt].page = page;
307 mem->arr[mem->cnt].order = order;
309 if (max_page_cnt <= (1UL << order))
311 if (mem->cnt >= max_segs) {
312 if (page_cnt < min_page_cnt)
316 max_page_cnt -= 1UL << order;
317 page_cnt += 1UL << order;
323 mmc_test_free_mem(mem);
328 * Map memory into a scatterlist. Optionally allow the same memory to be
329 * mapped more than once.
331 static int mmc_test_map_sg(struct mmc_test_mem *mem, unsigned long sz,
332 struct scatterlist *sglist, int repeat,
333 unsigned int max_segs, unsigned int max_seg_sz,
334 unsigned int *sg_len)
336 struct scatterlist *sg = NULL;
339 sg_init_table(sglist, max_segs);
343 for (i = 0; i < mem->cnt; i++) {
344 unsigned long len = PAGE_SIZE << mem->arr[i].order;
348 if (len > max_seg_sz)
356 sg_set_page(sg, mem->arr[i].page, len, 0);
362 } while (sz && repeat);
374 * Map memory into a scatterlist so that no pages are contiguous. Allow the
375 * same memory to be mapped more than once.
377 static int mmc_test_map_sg_max_scatter(struct mmc_test_mem *mem,
379 struct scatterlist *sglist,
380 unsigned int max_segs,
381 unsigned int max_seg_sz,
382 unsigned int *sg_len)
384 struct scatterlist *sg = NULL;
385 unsigned int i = mem->cnt, cnt;
387 void *base, *addr, *last_addr = NULL;
389 sg_init_table(sglist, max_segs);
393 base = page_address(mem->arr[--i].page);
394 cnt = 1 << mem->arr[i].order;
396 addr = base + PAGE_SIZE * --cnt;
397 if (last_addr && last_addr + PAGE_SIZE == addr)
401 if (len > max_seg_sz)
411 sg_set_page(sg, virt_to_page(addr), len, 0);
426 * Calculate transfer rate in bytes per second.
428 static unsigned int mmc_test_rate(uint64_t bytes, struct timespec *ts)
438 while (ns > UINT_MAX) {
446 do_div(bytes, (uint32_t)ns);
452 * Print the transfer rate.
454 static void mmc_test_print_rate(struct mmc_test_card *test, uint64_t bytes,
455 struct timespec *ts1, struct timespec *ts2)
457 unsigned int rate, sectors = bytes >> 9;
460 ts = timespec_sub(*ts2, *ts1);
462 rate = mmc_test_rate(bytes, &ts);
464 printk(KERN_INFO "%s: Transfer of %u sectors (%u%s KiB) took %lu.%09lu "
465 "seconds (%u kB/s, %u KiB/s)\n",
466 mmc_hostname(test->card->host), sectors, sectors >> 1,
467 (sectors == 1 ? ".5" : ""), (unsigned long)ts.tv_sec,
468 (unsigned long)ts.tv_nsec, rate / 1000, rate / 1024);
472 * Print the average transfer rate.
474 static void mmc_test_print_avg_rate(struct mmc_test_card *test, uint64_t bytes,
475 unsigned int count, struct timespec *ts1,
476 struct timespec *ts2)
478 unsigned int rate, sectors = bytes >> 9;
479 uint64_t tot = bytes * count;
482 ts = timespec_sub(*ts2, *ts1);
484 rate = mmc_test_rate(tot, &ts);
486 printk(KERN_INFO "%s: Transfer of %u x %u sectors (%u x %u%s KiB) took "
487 "%lu.%09lu seconds (%u kB/s, %u KiB/s)\n",
488 mmc_hostname(test->card->host), count, sectors, count,
489 sectors >> 1, (sectors == 1 ? ".5" : ""),
490 (unsigned long)ts.tv_sec, (unsigned long)ts.tv_nsec,
491 rate / 1000, rate / 1024);
495 * Return the card size in sectors.
497 static unsigned int mmc_test_capacity(struct mmc_card *card)
499 if (!mmc_card_sd(card) && mmc_card_blockaddr(card))
500 return card->ext_csd.sectors;
502 return card->csd.capacity << (card->csd.read_blkbits - 9);
505 /*******************************************************************/
506 /* Test preparation and cleanup */
507 /*******************************************************************/
510 * Fill the first couple of sectors of the card with known data
511 * so that bad reads/writes can be detected
513 static int __mmc_test_prepare(struct mmc_test_card *test, int write)
517 ret = mmc_test_set_blksize(test, 512);
522 memset(test->buffer, 0xDF, 512);
524 for (i = 0;i < 512;i++)
528 for (i = 0;i < BUFFER_SIZE / 512;i++) {
529 ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1);
537 static int mmc_test_prepare_write(struct mmc_test_card *test)
539 return __mmc_test_prepare(test, 1);
542 static int mmc_test_prepare_read(struct mmc_test_card *test)
544 return __mmc_test_prepare(test, 0);
547 static int mmc_test_cleanup(struct mmc_test_card *test)
551 ret = mmc_test_set_blksize(test, 512);
555 memset(test->buffer, 0, 512);
557 for (i = 0;i < BUFFER_SIZE / 512;i++) {
558 ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1);
566 /*******************************************************************/
567 /* Test execution helpers */
568 /*******************************************************************/
571 * Modifies the mmc_request to perform the "short transfer" tests
573 static void mmc_test_prepare_broken_mrq(struct mmc_test_card *test,
574 struct mmc_request *mrq, int write)
576 BUG_ON(!mrq || !mrq->cmd || !mrq->data);
578 if (mrq->data->blocks > 1) {
579 mrq->cmd->opcode = write ?
580 MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK;
583 mrq->cmd->opcode = MMC_SEND_STATUS;
584 mrq->cmd->arg = test->card->rca << 16;
589 * Checks that a normal transfer didn't have any errors
591 static int mmc_test_check_result(struct mmc_test_card *test,
592 struct mmc_request *mrq)
596 BUG_ON(!mrq || !mrq->cmd || !mrq->data);
600 if (!ret && mrq->cmd->error)
601 ret = mrq->cmd->error;
602 if (!ret && mrq->data->error)
603 ret = mrq->data->error;
604 if (!ret && mrq->stop && mrq->stop->error)
605 ret = mrq->stop->error;
606 if (!ret && mrq->data->bytes_xfered !=
607 mrq->data->blocks * mrq->data->blksz)
611 ret = RESULT_UNSUP_HOST;
617 * Checks that a "short transfer" behaved as expected
619 static int mmc_test_check_broken_result(struct mmc_test_card *test,
620 struct mmc_request *mrq)
624 BUG_ON(!mrq || !mrq->cmd || !mrq->data);
628 if (!ret && mrq->cmd->error)
629 ret = mrq->cmd->error;
630 if (!ret && mrq->data->error == 0)
632 if (!ret && mrq->data->error != -ETIMEDOUT)
633 ret = mrq->data->error;
634 if (!ret && mrq->stop && mrq->stop->error)
635 ret = mrq->stop->error;
636 if (mrq->data->blocks > 1) {
637 if (!ret && mrq->data->bytes_xfered > mrq->data->blksz)
640 if (!ret && mrq->data->bytes_xfered > 0)
645 ret = RESULT_UNSUP_HOST;
651 * Tests a basic transfer with certain parameters
653 static int mmc_test_simple_transfer(struct mmc_test_card *test,
654 struct scatterlist *sg, unsigned sg_len, unsigned dev_addr,
655 unsigned blocks, unsigned blksz, int write)
657 struct mmc_request mrq;
658 struct mmc_command cmd;
659 struct mmc_command stop;
660 struct mmc_data data;
662 memset(&mrq, 0, sizeof(struct mmc_request));
663 memset(&cmd, 0, sizeof(struct mmc_command));
664 memset(&data, 0, sizeof(struct mmc_data));
665 memset(&stop, 0, sizeof(struct mmc_command));
671 mmc_test_prepare_mrq(test, &mrq, sg, sg_len, dev_addr,
672 blocks, blksz, write);
674 mmc_wait_for_req(test->card->host, &mrq);
676 mmc_test_wait_busy(test);
678 return mmc_test_check_result(test, &mrq);
682 * Tests a transfer where the card will fail completely or partly
684 static int mmc_test_broken_transfer(struct mmc_test_card *test,
685 unsigned blocks, unsigned blksz, int write)
687 struct mmc_request mrq;
688 struct mmc_command cmd;
689 struct mmc_command stop;
690 struct mmc_data data;
692 struct scatterlist sg;
694 memset(&mrq, 0, sizeof(struct mmc_request));
695 memset(&cmd, 0, sizeof(struct mmc_command));
696 memset(&data, 0, sizeof(struct mmc_data));
697 memset(&stop, 0, sizeof(struct mmc_command));
703 sg_init_one(&sg, test->buffer, blocks * blksz);
705 mmc_test_prepare_mrq(test, &mrq, &sg, 1, 0, blocks, blksz, write);
706 mmc_test_prepare_broken_mrq(test, &mrq, write);
708 mmc_wait_for_req(test->card->host, &mrq);
710 mmc_test_wait_busy(test);
712 return mmc_test_check_broken_result(test, &mrq);
716 * Does a complete transfer test where data is also validated
718 * Note: mmc_test_prepare() must have been done before this call
720 static int mmc_test_transfer(struct mmc_test_card *test,
721 struct scatterlist *sg, unsigned sg_len, unsigned dev_addr,
722 unsigned blocks, unsigned blksz, int write)
728 for (i = 0;i < blocks * blksz;i++)
729 test->scratch[i] = i;
731 memset(test->scratch, 0, BUFFER_SIZE);
733 local_irq_save(flags);
734 sg_copy_from_buffer(sg, sg_len, test->scratch, BUFFER_SIZE);
735 local_irq_restore(flags);
737 ret = mmc_test_set_blksize(test, blksz);
741 ret = mmc_test_simple_transfer(test, sg, sg_len, dev_addr,
742 blocks, blksz, write);
749 ret = mmc_test_set_blksize(test, 512);
753 sectors = (blocks * blksz + 511) / 512;
754 if ((sectors * 512) == (blocks * blksz))
757 if ((sectors * 512) > BUFFER_SIZE)
760 memset(test->buffer, 0, sectors * 512);
762 for (i = 0;i < sectors;i++) {
763 ret = mmc_test_buffer_transfer(test,
764 test->buffer + i * 512,
765 dev_addr + i, 512, 0);
770 for (i = 0;i < blocks * blksz;i++) {
771 if (test->buffer[i] != (u8)i)
775 for (;i < sectors * 512;i++) {
776 if (test->buffer[i] != 0xDF)
780 local_irq_save(flags);
781 sg_copy_to_buffer(sg, sg_len, test->scratch, BUFFER_SIZE);
782 local_irq_restore(flags);
783 for (i = 0;i < blocks * blksz;i++) {
784 if (test->scratch[i] != (u8)i)
792 /*******************************************************************/
794 /*******************************************************************/
796 struct mmc_test_case {
799 int (*prepare)(struct mmc_test_card *);
800 int (*run)(struct mmc_test_card *);
801 int (*cleanup)(struct mmc_test_card *);
804 static int mmc_test_basic_write(struct mmc_test_card *test)
807 struct scatterlist sg;
809 ret = mmc_test_set_blksize(test, 512);
813 sg_init_one(&sg, test->buffer, 512);
815 ret = mmc_test_simple_transfer(test, &sg, 1, 0, 1, 512, 1);
822 static int mmc_test_basic_read(struct mmc_test_card *test)
825 struct scatterlist sg;
827 ret = mmc_test_set_blksize(test, 512);
831 sg_init_one(&sg, test->buffer, 512);
833 ret = mmc_test_simple_transfer(test, &sg, 1, 0, 1, 512, 0);
840 static int mmc_test_verify_write(struct mmc_test_card *test)
843 struct scatterlist sg;
845 sg_init_one(&sg, test->buffer, 512);
847 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
854 static int mmc_test_verify_read(struct mmc_test_card *test)
857 struct scatterlist sg;
859 sg_init_one(&sg, test->buffer, 512);
861 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
868 static int mmc_test_multi_write(struct mmc_test_card *test)
872 struct scatterlist sg;
874 if (test->card->host->max_blk_count == 1)
875 return RESULT_UNSUP_HOST;
877 size = PAGE_SIZE * 2;
878 size = min(size, test->card->host->max_req_size);
879 size = min(size, test->card->host->max_seg_size);
880 size = min(size, test->card->host->max_blk_count * 512);
883 return RESULT_UNSUP_HOST;
885 sg_init_one(&sg, test->buffer, size);
887 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
894 static int mmc_test_multi_read(struct mmc_test_card *test)
898 struct scatterlist sg;
900 if (test->card->host->max_blk_count == 1)
901 return RESULT_UNSUP_HOST;
903 size = PAGE_SIZE * 2;
904 size = min(size, test->card->host->max_req_size);
905 size = min(size, test->card->host->max_seg_size);
906 size = min(size, test->card->host->max_blk_count * 512);
909 return RESULT_UNSUP_HOST;
911 sg_init_one(&sg, test->buffer, size);
913 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
920 static int mmc_test_pow2_write(struct mmc_test_card *test)
923 struct scatterlist sg;
925 if (!test->card->csd.write_partial)
926 return RESULT_UNSUP_CARD;
928 for (i = 1; i < 512;i <<= 1) {
929 sg_init_one(&sg, test->buffer, i);
930 ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 1);
938 static int mmc_test_pow2_read(struct mmc_test_card *test)
941 struct scatterlist sg;
943 if (!test->card->csd.read_partial)
944 return RESULT_UNSUP_CARD;
946 for (i = 1; i < 512;i <<= 1) {
947 sg_init_one(&sg, test->buffer, i);
948 ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 0);
956 static int mmc_test_weird_write(struct mmc_test_card *test)
959 struct scatterlist sg;
961 if (!test->card->csd.write_partial)
962 return RESULT_UNSUP_CARD;
964 for (i = 3; i < 512;i += 7) {
965 sg_init_one(&sg, test->buffer, i);
966 ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 1);
974 static int mmc_test_weird_read(struct mmc_test_card *test)
977 struct scatterlist sg;
979 if (!test->card->csd.read_partial)
980 return RESULT_UNSUP_CARD;
982 for (i = 3; i < 512;i += 7) {
983 sg_init_one(&sg, test->buffer, i);
984 ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 0);
992 static int mmc_test_align_write(struct mmc_test_card *test)
995 struct scatterlist sg;
997 for (i = 1;i < 4;i++) {
998 sg_init_one(&sg, test->buffer + i, 512);
999 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
1007 static int mmc_test_align_read(struct mmc_test_card *test)
1010 struct scatterlist sg;
1012 for (i = 1;i < 4;i++) {
1013 sg_init_one(&sg, test->buffer + i, 512);
1014 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
1022 static int mmc_test_align_multi_write(struct mmc_test_card *test)
1026 struct scatterlist sg;
1028 if (test->card->host->max_blk_count == 1)
1029 return RESULT_UNSUP_HOST;
1031 size = PAGE_SIZE * 2;
1032 size = min(size, test->card->host->max_req_size);
1033 size = min(size, test->card->host->max_seg_size);
1034 size = min(size, test->card->host->max_blk_count * 512);
1037 return RESULT_UNSUP_HOST;
1039 for (i = 1;i < 4;i++) {
1040 sg_init_one(&sg, test->buffer + i, size);
1041 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
1049 static int mmc_test_align_multi_read(struct mmc_test_card *test)
1053 struct scatterlist sg;
1055 if (test->card->host->max_blk_count == 1)
1056 return RESULT_UNSUP_HOST;
1058 size = PAGE_SIZE * 2;
1059 size = min(size, test->card->host->max_req_size);
1060 size = min(size, test->card->host->max_seg_size);
1061 size = min(size, test->card->host->max_blk_count * 512);
1064 return RESULT_UNSUP_HOST;
1066 for (i = 1;i < 4;i++) {
1067 sg_init_one(&sg, test->buffer + i, size);
1068 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
1076 static int mmc_test_xfersize_write(struct mmc_test_card *test)
1080 ret = mmc_test_set_blksize(test, 512);
1084 ret = mmc_test_broken_transfer(test, 1, 512, 1);
1091 static int mmc_test_xfersize_read(struct mmc_test_card *test)
1095 ret = mmc_test_set_blksize(test, 512);
1099 ret = mmc_test_broken_transfer(test, 1, 512, 0);
1106 static int mmc_test_multi_xfersize_write(struct mmc_test_card *test)
1110 if (test->card->host->max_blk_count == 1)
1111 return RESULT_UNSUP_HOST;
1113 ret = mmc_test_set_blksize(test, 512);
1117 ret = mmc_test_broken_transfer(test, 2, 512, 1);
1124 static int mmc_test_multi_xfersize_read(struct mmc_test_card *test)
1128 if (test->card->host->max_blk_count == 1)
1129 return RESULT_UNSUP_HOST;
1131 ret = mmc_test_set_blksize(test, 512);
1135 ret = mmc_test_broken_transfer(test, 2, 512, 0);
1142 #ifdef CONFIG_HIGHMEM
1144 static int mmc_test_write_high(struct mmc_test_card *test)
1147 struct scatterlist sg;
1149 sg_init_table(&sg, 1);
1150 sg_set_page(&sg, test->highmem, 512, 0);
1152 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
1159 static int mmc_test_read_high(struct mmc_test_card *test)
1162 struct scatterlist sg;
1164 sg_init_table(&sg, 1);
1165 sg_set_page(&sg, test->highmem, 512, 0);
1167 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
1174 static int mmc_test_multi_write_high(struct mmc_test_card *test)
1178 struct scatterlist sg;
1180 if (test->card->host->max_blk_count == 1)
1181 return RESULT_UNSUP_HOST;
1183 size = PAGE_SIZE * 2;
1184 size = min(size, test->card->host->max_req_size);
1185 size = min(size, test->card->host->max_seg_size);
1186 size = min(size, test->card->host->max_blk_count * 512);
1189 return RESULT_UNSUP_HOST;
1191 sg_init_table(&sg, 1);
1192 sg_set_page(&sg, test->highmem, size, 0);
1194 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
1201 static int mmc_test_multi_read_high(struct mmc_test_card *test)
1205 struct scatterlist sg;
1207 if (test->card->host->max_blk_count == 1)
1208 return RESULT_UNSUP_HOST;
1210 size = PAGE_SIZE * 2;
1211 size = min(size, test->card->host->max_req_size);
1212 size = min(size, test->card->host->max_seg_size);
1213 size = min(size, test->card->host->max_blk_count * 512);
1216 return RESULT_UNSUP_HOST;
1218 sg_init_table(&sg, 1);
1219 sg_set_page(&sg, test->highmem, size, 0);
1221 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
1230 static int mmc_test_no_highmem(struct mmc_test_card *test)
1232 printk(KERN_INFO "%s: Highmem not configured - test skipped\n",
1233 mmc_hostname(test->card->host));
1237 #endif /* CONFIG_HIGHMEM */
1240 * Map sz bytes so that it can be transferred.
1242 static int mmc_test_area_map(struct mmc_test_card *test, unsigned long sz,
1245 struct mmc_test_area *t = &test->area;
1248 t->blocks = sz >> 9;
1251 err = mmc_test_map_sg_max_scatter(t->mem, sz, t->sg,
1252 t->max_segs, t->max_seg_sz,
1255 err = mmc_test_map_sg(t->mem, sz, t->sg, 1, t->max_segs,
1256 t->max_seg_sz, &t->sg_len);
1259 printk(KERN_INFO "%s: Failed to map sg list\n",
1260 mmc_hostname(test->card->host));
1265 * Transfer bytes mapped by mmc_test_area_map().
1267 static int mmc_test_area_transfer(struct mmc_test_card *test,
1268 unsigned int dev_addr, int write)
1270 struct mmc_test_area *t = &test->area;
1272 return mmc_test_simple_transfer(test, t->sg, t->sg_len, dev_addr,
1273 t->blocks, 512, write);
1277 * Map and transfer bytes.
1279 static int mmc_test_area_io(struct mmc_test_card *test, unsigned long sz,
1280 unsigned int dev_addr, int write, int max_scatter,
1283 struct timespec ts1, ts2;
1287 * In the case of a maximally scattered transfer, the maximum transfer
1288 * size is further limited by using PAGE_SIZE segments.
1291 struct mmc_test_area *t = &test->area;
1292 unsigned long max_tfr;
1294 if (t->max_seg_sz >= PAGE_SIZE)
1295 max_tfr = t->max_segs * PAGE_SIZE;
1297 max_tfr = t->max_segs * t->max_seg_sz;
1302 ret = mmc_test_area_map(test, sz, max_scatter);
1307 getnstimeofday(&ts1);
1309 ret = mmc_test_area_transfer(test, dev_addr, write);
1314 getnstimeofday(&ts2);
1317 mmc_test_print_rate(test, sz, &ts1, &ts2);
1323 * Write the test area entirely.
1325 static int mmc_test_area_fill(struct mmc_test_card *test)
1327 return mmc_test_area_io(test, test->area.max_tfr, test->area.dev_addr,
1332 * Erase the test area entirely.
1334 static int mmc_test_area_erase(struct mmc_test_card *test)
1336 struct mmc_test_area *t = &test->area;
1338 if (!mmc_can_erase(test->card))
1341 return mmc_erase(test->card, t->dev_addr, test->area.max_sz >> 9,
1346 * Cleanup struct mmc_test_area.
1348 static int mmc_test_area_cleanup(struct mmc_test_card *test)
1350 struct mmc_test_area *t = &test->area;
1353 mmc_test_free_mem(t->mem);
1359 * Initialize an area for testing large transfers. The size of the area is the
1360 * preferred erase size which is a good size for optimal transfer speed. Note
1361 * that is typically 4MiB for modern cards. The test area is set to the middle
1362 * of the card because cards may have different charateristics at the front
1363 * (for FAT file system optimization). Optionally, the area is erased (if the
1364 * card supports it) which may improve write performance. Optionally, the area
1365 * is filled with data for subsequent read tests.
1367 static int mmc_test_area_init(struct mmc_test_card *test, int erase, int fill)
1369 struct mmc_test_area *t = &test->area;
1370 unsigned long min_sz = 64 * 1024;
1373 ret = mmc_test_set_blksize(test, 512);
1377 if (test->card->pref_erase > TEST_AREA_MAX_SIZE >> 9)
1378 t->max_sz = TEST_AREA_MAX_SIZE;
1380 t->max_sz = (unsigned long)test->card->pref_erase << 9;
1382 t->max_segs = test->card->host->max_segs;
1383 t->max_seg_sz = test->card->host->max_seg_size;
1385 t->max_tfr = t->max_sz;
1386 if (t->max_tfr >> 9 > test->card->host->max_blk_count)
1387 t->max_tfr = test->card->host->max_blk_count << 9;
1388 if (t->max_tfr > test->card->host->max_req_size)
1389 t->max_tfr = test->card->host->max_req_size;
1390 if (t->max_tfr / t->max_seg_sz > t->max_segs)
1391 t->max_tfr = t->max_segs * t->max_seg_sz;
1394 * Try to allocate enough memory for the whole area. Less is OK
1395 * because the same memory can be mapped into the scatterlist more than
1396 * once. Also, take into account the limits imposed on scatterlist
1397 * segments by the host driver.
1399 t->mem = mmc_test_alloc_mem(min_sz, t->max_sz, t->max_segs,
1404 t->sg = kmalloc(sizeof(struct scatterlist) * t->max_segs, GFP_KERNEL);
1410 t->dev_addr = mmc_test_capacity(test->card) / 2;
1411 t->dev_addr -= t->dev_addr % (t->max_sz >> 9);
1414 ret = mmc_test_area_erase(test);
1420 ret = mmc_test_area_fill(test);
1428 mmc_test_area_cleanup(test);
1433 * Prepare for large transfers. Do not erase the test area.
1435 static int mmc_test_area_prepare(struct mmc_test_card *test)
1437 return mmc_test_area_init(test, 0, 0);
1441 * Prepare for large transfers. Do erase the test area.
1443 static int mmc_test_area_prepare_erase(struct mmc_test_card *test)
1445 return mmc_test_area_init(test, 1, 0);
1449 * Prepare for large transfers. Erase and fill the test area.
1451 static int mmc_test_area_prepare_fill(struct mmc_test_card *test)
1453 return mmc_test_area_init(test, 1, 1);
1457 * Test best-case performance. Best-case performance is expected from
1458 * a single large transfer.
1460 * An additional option (max_scatter) allows the measurement of the same
1461 * transfer but with no contiguous pages in the scatter list. This tests
1462 * the efficiency of DMA to handle scattered pages.
1464 static int mmc_test_best_performance(struct mmc_test_card *test, int write,
1467 return mmc_test_area_io(test, test->area.max_tfr, test->area.dev_addr,
1468 write, max_scatter, 1);
1472 * Best-case read performance.
1474 static int mmc_test_best_read_performance(struct mmc_test_card *test)
1476 return mmc_test_best_performance(test, 0, 0);
1480 * Best-case write performance.
1482 static int mmc_test_best_write_performance(struct mmc_test_card *test)
1484 return mmc_test_best_performance(test, 1, 0);
1488 * Best-case read performance into scattered pages.
1490 static int mmc_test_best_read_perf_max_scatter(struct mmc_test_card *test)
1492 return mmc_test_best_performance(test, 0, 1);
1496 * Best-case write performance from scattered pages.
1498 static int mmc_test_best_write_perf_max_scatter(struct mmc_test_card *test)
1500 return mmc_test_best_performance(test, 1, 1);
1504 * Single read performance by transfer size.
1506 static int mmc_test_profile_read_perf(struct mmc_test_card *test)
1509 unsigned int dev_addr;
1512 for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
1513 dev_addr = test->area.dev_addr + (sz >> 9);
1514 ret = mmc_test_area_io(test, sz, dev_addr, 0, 0, 1);
1518 sz = test->area.max_tfr;
1519 dev_addr = test->area.dev_addr;
1520 return mmc_test_area_io(test, sz, dev_addr, 0, 0, 1);
1524 * Single write performance by transfer size.
1526 static int mmc_test_profile_write_perf(struct mmc_test_card *test)
1529 unsigned int dev_addr;
1532 ret = mmc_test_area_erase(test);
1535 for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
1536 dev_addr = test->area.dev_addr + (sz >> 9);
1537 ret = mmc_test_area_io(test, sz, dev_addr, 1, 0, 1);
1541 ret = mmc_test_area_erase(test);
1544 sz = test->area.max_tfr;
1545 dev_addr = test->area.dev_addr;
1546 return mmc_test_area_io(test, sz, dev_addr, 1, 0, 1);
1550 * Single trim performance by transfer size.
1552 static int mmc_test_profile_trim_perf(struct mmc_test_card *test)
1555 unsigned int dev_addr;
1556 struct timespec ts1, ts2;
1559 if (!mmc_can_trim(test->card))
1560 return RESULT_UNSUP_CARD;
1562 if (!mmc_can_erase(test->card))
1563 return RESULT_UNSUP_HOST;
1565 for (sz = 512; sz < test->area.max_sz; sz <<= 1) {
1566 dev_addr = test->area.dev_addr + (sz >> 9);
1567 getnstimeofday(&ts1);
1568 ret = mmc_erase(test->card, dev_addr, sz >> 9, MMC_TRIM_ARG);
1571 getnstimeofday(&ts2);
1572 mmc_test_print_rate(test, sz, &ts1, &ts2);
1574 dev_addr = test->area.dev_addr;
1575 getnstimeofday(&ts1);
1576 ret = mmc_erase(test->card, dev_addr, sz >> 9, MMC_TRIM_ARG);
1579 getnstimeofday(&ts2);
1580 mmc_test_print_rate(test, sz, &ts1, &ts2);
1584 static int mmc_test_seq_read_perf(struct mmc_test_card *test, unsigned long sz)
1586 unsigned int dev_addr, i, cnt;
1587 struct timespec ts1, ts2;
1590 cnt = test->area.max_sz / sz;
1591 dev_addr = test->area.dev_addr;
1592 getnstimeofday(&ts1);
1593 for (i = 0; i < cnt; i++) {
1594 ret = mmc_test_area_io(test, sz, dev_addr, 0, 0, 0);
1597 dev_addr += (sz >> 9);
1599 getnstimeofday(&ts2);
1600 mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2);
1605 * Consecutive read performance by transfer size.
1607 static int mmc_test_profile_seq_read_perf(struct mmc_test_card *test)
1612 for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
1613 ret = mmc_test_seq_read_perf(test, sz);
1617 sz = test->area.max_tfr;
1618 return mmc_test_seq_read_perf(test, sz);
1621 static int mmc_test_seq_write_perf(struct mmc_test_card *test, unsigned long sz)
1623 unsigned int dev_addr, i, cnt;
1624 struct timespec ts1, ts2;
1627 ret = mmc_test_area_erase(test);
1630 cnt = test->area.max_sz / sz;
1631 dev_addr = test->area.dev_addr;
1632 getnstimeofday(&ts1);
1633 for (i = 0; i < cnt; i++) {
1634 ret = mmc_test_area_io(test, sz, dev_addr, 1, 0, 0);
1637 dev_addr += (sz >> 9);
1639 getnstimeofday(&ts2);
1640 mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2);
1645 * Consecutive write performance by transfer size.
1647 static int mmc_test_profile_seq_write_perf(struct mmc_test_card *test)
1652 for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
1653 ret = mmc_test_seq_write_perf(test, sz);
1657 sz = test->area.max_tfr;
1658 return mmc_test_seq_write_perf(test, sz);
1662 * Consecutive trim performance by transfer size.
1664 static int mmc_test_profile_seq_trim_perf(struct mmc_test_card *test)
1667 unsigned int dev_addr, i, cnt;
1668 struct timespec ts1, ts2;
1671 if (!mmc_can_trim(test->card))
1672 return RESULT_UNSUP_CARD;
1674 if (!mmc_can_erase(test->card))
1675 return RESULT_UNSUP_HOST;
1677 for (sz = 512; sz <= test->area.max_sz; sz <<= 1) {
1678 ret = mmc_test_area_erase(test);
1681 ret = mmc_test_area_fill(test);
1684 cnt = test->area.max_sz / sz;
1685 dev_addr = test->area.dev_addr;
1686 getnstimeofday(&ts1);
1687 for (i = 0; i < cnt; i++) {
1688 ret = mmc_erase(test->card, dev_addr, sz >> 9,
1692 dev_addr += (sz >> 9);
1694 getnstimeofday(&ts2);
1695 mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2);
1700 static const struct mmc_test_case mmc_test_cases[] = {
1702 .name = "Basic write (no data verification)",
1703 .run = mmc_test_basic_write,
1707 .name = "Basic read (no data verification)",
1708 .run = mmc_test_basic_read,
1712 .name = "Basic write (with data verification)",
1713 .prepare = mmc_test_prepare_write,
1714 .run = mmc_test_verify_write,
1715 .cleanup = mmc_test_cleanup,
1719 .name = "Basic read (with data verification)",
1720 .prepare = mmc_test_prepare_read,
1721 .run = mmc_test_verify_read,
1722 .cleanup = mmc_test_cleanup,
1726 .name = "Multi-block write",
1727 .prepare = mmc_test_prepare_write,
1728 .run = mmc_test_multi_write,
1729 .cleanup = mmc_test_cleanup,
1733 .name = "Multi-block read",
1734 .prepare = mmc_test_prepare_read,
1735 .run = mmc_test_multi_read,
1736 .cleanup = mmc_test_cleanup,
1740 .name = "Power of two block writes",
1741 .prepare = mmc_test_prepare_write,
1742 .run = mmc_test_pow2_write,
1743 .cleanup = mmc_test_cleanup,
1747 .name = "Power of two block reads",
1748 .prepare = mmc_test_prepare_read,
1749 .run = mmc_test_pow2_read,
1750 .cleanup = mmc_test_cleanup,
1754 .name = "Weird sized block writes",
1755 .prepare = mmc_test_prepare_write,
1756 .run = mmc_test_weird_write,
1757 .cleanup = mmc_test_cleanup,
1761 .name = "Weird sized block reads",
1762 .prepare = mmc_test_prepare_read,
1763 .run = mmc_test_weird_read,
1764 .cleanup = mmc_test_cleanup,
1768 .name = "Badly aligned write",
1769 .prepare = mmc_test_prepare_write,
1770 .run = mmc_test_align_write,
1771 .cleanup = mmc_test_cleanup,
1775 .name = "Badly aligned read",
1776 .prepare = mmc_test_prepare_read,
1777 .run = mmc_test_align_read,
1778 .cleanup = mmc_test_cleanup,
1782 .name = "Badly aligned multi-block write",
1783 .prepare = mmc_test_prepare_write,
1784 .run = mmc_test_align_multi_write,
1785 .cleanup = mmc_test_cleanup,
1789 .name = "Badly aligned multi-block read",
1790 .prepare = mmc_test_prepare_read,
1791 .run = mmc_test_align_multi_read,
1792 .cleanup = mmc_test_cleanup,
1796 .name = "Correct xfer_size at write (start failure)",
1797 .run = mmc_test_xfersize_write,
1801 .name = "Correct xfer_size at read (start failure)",
1802 .run = mmc_test_xfersize_read,
1806 .name = "Correct xfer_size at write (midway failure)",
1807 .run = mmc_test_multi_xfersize_write,
1811 .name = "Correct xfer_size at read (midway failure)",
1812 .run = mmc_test_multi_xfersize_read,
1815 #ifdef CONFIG_HIGHMEM
1818 .name = "Highmem write",
1819 .prepare = mmc_test_prepare_write,
1820 .run = mmc_test_write_high,
1821 .cleanup = mmc_test_cleanup,
1825 .name = "Highmem read",
1826 .prepare = mmc_test_prepare_read,
1827 .run = mmc_test_read_high,
1828 .cleanup = mmc_test_cleanup,
1832 .name = "Multi-block highmem write",
1833 .prepare = mmc_test_prepare_write,
1834 .run = mmc_test_multi_write_high,
1835 .cleanup = mmc_test_cleanup,
1839 .name = "Multi-block highmem read",
1840 .prepare = mmc_test_prepare_read,
1841 .run = mmc_test_multi_read_high,
1842 .cleanup = mmc_test_cleanup,
1848 .name = "Highmem write",
1849 .run = mmc_test_no_highmem,
1853 .name = "Highmem read",
1854 .run = mmc_test_no_highmem,
1858 .name = "Multi-block highmem write",
1859 .run = mmc_test_no_highmem,
1863 .name = "Multi-block highmem read",
1864 .run = mmc_test_no_highmem,
1867 #endif /* CONFIG_HIGHMEM */
1870 .name = "Best-case read performance",
1871 .prepare = mmc_test_area_prepare_fill,
1872 .run = mmc_test_best_read_performance,
1873 .cleanup = mmc_test_area_cleanup,
1877 .name = "Best-case write performance",
1878 .prepare = mmc_test_area_prepare_erase,
1879 .run = mmc_test_best_write_performance,
1880 .cleanup = mmc_test_area_cleanup,
1884 .name = "Best-case read performance into scattered pages",
1885 .prepare = mmc_test_area_prepare_fill,
1886 .run = mmc_test_best_read_perf_max_scatter,
1887 .cleanup = mmc_test_area_cleanup,
1891 .name = "Best-case write performance from scattered pages",
1892 .prepare = mmc_test_area_prepare_erase,
1893 .run = mmc_test_best_write_perf_max_scatter,
1894 .cleanup = mmc_test_area_cleanup,
1898 .name = "Single read performance by transfer size",
1899 .prepare = mmc_test_area_prepare_fill,
1900 .run = mmc_test_profile_read_perf,
1901 .cleanup = mmc_test_area_cleanup,
1905 .name = "Single write performance by transfer size",
1906 .prepare = mmc_test_area_prepare,
1907 .run = mmc_test_profile_write_perf,
1908 .cleanup = mmc_test_area_cleanup,
1912 .name = "Single trim performance by transfer size",
1913 .prepare = mmc_test_area_prepare_fill,
1914 .run = mmc_test_profile_trim_perf,
1915 .cleanup = mmc_test_area_cleanup,
1919 .name = "Consecutive read performance by transfer size",
1920 .prepare = mmc_test_area_prepare_fill,
1921 .run = mmc_test_profile_seq_read_perf,
1922 .cleanup = mmc_test_area_cleanup,
1926 .name = "Consecutive write performance by transfer size",
1927 .prepare = mmc_test_area_prepare,
1928 .run = mmc_test_profile_seq_write_perf,
1929 .cleanup = mmc_test_area_cleanup,
1933 .name = "Consecutive trim performance by transfer size",
1934 .prepare = mmc_test_area_prepare,
1935 .run = mmc_test_profile_seq_trim_perf,
1936 .cleanup = mmc_test_area_cleanup,
1941 static DEFINE_MUTEX(mmc_test_lock);
1943 static void mmc_test_run(struct mmc_test_card *test, int testcase)
1947 printk(KERN_INFO "%s: Starting tests of card %s...\n",
1948 mmc_hostname(test->card->host), mmc_card_id(test->card));
1950 mmc_claim_host(test->card->host);
1952 for (i = 0;i < ARRAY_SIZE(mmc_test_cases);i++) {
1953 if (testcase && ((i + 1) != testcase))
1956 printk(KERN_INFO "%s: Test case %d. %s...\n",
1957 mmc_hostname(test->card->host), i + 1,
1958 mmc_test_cases[i].name);
1960 if (mmc_test_cases[i].prepare) {
1961 ret = mmc_test_cases[i].prepare(test);
1963 printk(KERN_INFO "%s: Result: Prepare "
1964 "stage failed! (%d)\n",
1965 mmc_hostname(test->card->host),
1971 ret = mmc_test_cases[i].run(test);
1974 printk(KERN_INFO "%s: Result: OK\n",
1975 mmc_hostname(test->card->host));
1978 printk(KERN_INFO "%s: Result: FAILED\n",
1979 mmc_hostname(test->card->host));
1981 case RESULT_UNSUP_HOST:
1982 printk(KERN_INFO "%s: Result: UNSUPPORTED "
1984 mmc_hostname(test->card->host));
1986 case RESULT_UNSUP_CARD:
1987 printk(KERN_INFO "%s: Result: UNSUPPORTED "
1989 mmc_hostname(test->card->host));
1992 printk(KERN_INFO "%s: Result: ERROR (%d)\n",
1993 mmc_hostname(test->card->host), ret);
1996 if (mmc_test_cases[i].cleanup) {
1997 ret = mmc_test_cases[i].cleanup(test);
1999 printk(KERN_INFO "%s: Warning: Cleanup "
2000 "stage failed! (%d)\n",
2001 mmc_hostname(test->card->host),
2007 mmc_release_host(test->card->host);
2009 printk(KERN_INFO "%s: Tests completed.\n",
2010 mmc_hostname(test->card->host));
2013 static ssize_t mmc_test_show(struct device *dev,
2014 struct device_attribute *attr, char *buf)
2016 mutex_lock(&mmc_test_lock);
2017 mutex_unlock(&mmc_test_lock);
2022 static ssize_t mmc_test_store(struct device *dev,
2023 struct device_attribute *attr, const char *buf, size_t count)
2025 struct mmc_card *card = mmc_dev_to_card(dev);
2026 struct mmc_test_card *test;
2029 testcase = simple_strtol(buf, NULL, 10);
2031 test = kzalloc(sizeof(struct mmc_test_card), GFP_KERNEL);
2037 test->buffer = kzalloc(BUFFER_SIZE, GFP_KERNEL);
2038 #ifdef CONFIG_HIGHMEM
2039 test->highmem = alloc_pages(GFP_KERNEL | __GFP_HIGHMEM, BUFFER_ORDER);
2042 #ifdef CONFIG_HIGHMEM
2043 if (test->buffer && test->highmem) {
2047 mutex_lock(&mmc_test_lock);
2048 mmc_test_run(test, testcase);
2049 mutex_unlock(&mmc_test_lock);
2052 #ifdef CONFIG_HIGHMEM
2053 __free_pages(test->highmem, BUFFER_ORDER);
2055 kfree(test->buffer);
2061 static DEVICE_ATTR(test, S_IWUSR | S_IRUGO, mmc_test_show, mmc_test_store);
2063 static int mmc_test_probe(struct mmc_card *card)
2067 if (!mmc_card_mmc(card) && !mmc_card_sd(card))
2070 ret = device_create_file(&card->dev, &dev_attr_test);
2074 dev_info(&card->dev, "Card claimed for testing.\n");
2079 static void mmc_test_remove(struct mmc_card *card)
2081 device_remove_file(&card->dev, &dev_attr_test);
2084 static struct mmc_driver mmc_driver = {
2088 .probe = mmc_test_probe,
2089 .remove = mmc_test_remove,
2092 static int __init mmc_test_init(void)
2094 return mmc_register_driver(&mmc_driver);
2097 static void __exit mmc_test_exit(void)
2099 mmc_unregister_driver(&mmc_driver);
2102 module_init(mmc_test_init);
2103 module_exit(mmc_test_exit);
2105 MODULE_LICENSE("GPL");
2106 MODULE_DESCRIPTION("Multimedia Card (MMC) host test driver");
2107 MODULE_AUTHOR("Pierre Ossman");