diff options
Diffstat (limited to 'drivers/mmc/card/mmc_test.c')
| -rw-r--r-- | drivers/mmc/card/mmc_test.c | 1985 |
1 files changed, 1914 insertions, 71 deletions
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c index b9f1e84897c..0c0fc52d42c 100644 --- a/drivers/mmc/card/mmc_test.c +++ b/drivers/mmc/card/mmc_test.c @@ -13,8 +13,16 @@ #include <linux/mmc/card.h> #include <linux/mmc/host.h> #include <linux/mmc/mmc.h> +#include <linux/slab.h> #include <linux/scatterlist.h> +#include <linux/swap.h> /* For nr_free_buffer_pages() */ +#include <linux/list.h> + +#include <linux/debugfs.h> +#include <linux/uaccess.h> +#include <linux/seq_file.h> +#include <linux/module.h> #define RESULT_OK 0 #define RESULT_FAIL 1 @@ -24,6 +32,111 @@ #define BUFFER_ORDER 2 #define BUFFER_SIZE (PAGE_SIZE << BUFFER_ORDER) +/* + * Limit the test area size to the maximum MMC HC erase group size. Note that + * the maximum SD allocation unit size is just 4MiB. + */ +#define TEST_AREA_MAX_SIZE (128 * 1024 * 1024) + +/** + * struct mmc_test_pages - pages allocated by 'alloc_pages()'. + * @page: first page in the allocation + * @order: order of the number of pages allocated + */ +struct mmc_test_pages { + struct page *page; + unsigned int order; +}; + +/** + * struct mmc_test_mem - allocated memory. + * @arr: array of allocations + * @cnt: number of allocations + */ +struct mmc_test_mem { + struct mmc_test_pages *arr; + unsigned int cnt; +}; + +/** + * struct mmc_test_area - information for performance tests. + * @max_sz: test area size (in bytes) + * @dev_addr: address on card at which to do performance tests + * @max_tfr: maximum transfer size allowed by driver (in bytes) + * @max_segs: maximum segments allowed by driver in scatterlist @sg + * @max_seg_sz: maximum segment size allowed by driver + * @blocks: number of (512 byte) blocks currently mapped by @sg + * @sg_len: length of currently mapped scatterlist @sg + * @mem: allocated memory + * @sg: scatterlist + */ +struct mmc_test_area { + unsigned long max_sz; + unsigned int dev_addr; + unsigned int max_tfr; + unsigned int max_segs; + unsigned int max_seg_sz; + unsigned int blocks; + unsigned int sg_len; + struct mmc_test_mem *mem; + struct scatterlist *sg; +}; + +/** + * struct mmc_test_transfer_result - transfer results for performance tests. + * @link: double-linked list + * @count: amount of group of sectors to check + * @sectors: amount of sectors to check in one group + * @ts: time values of transfer + * @rate: calculated transfer rate + * @iops: I/O operations per second (times 100) + */ +struct mmc_test_transfer_result { + struct list_head link; + unsigned int count; + unsigned int sectors; + struct timespec ts; + unsigned int rate; + unsigned int iops; +}; + +/** + * struct mmc_test_general_result - results for tests. + * @link: double-linked list + * @card: card under test + * @testcase: number of test case + * @result: result of test run + * @tr_lst: transfer measurements if any as mmc_test_transfer_result + */ +struct mmc_test_general_result { + struct list_head link; + struct mmc_card *card; + int testcase; + int result; + struct list_head tr_lst; +}; + +/** + * struct mmc_test_dbgfs_file - debugfs related file. + * @link: double-linked list + * @card: card under test + * @file: file created under debugfs + */ +struct mmc_test_dbgfs_file { + struct list_head link; + struct mmc_card *card; + struct dentry *file; +}; + +/** + * struct mmc_test_card - test information. + * @card: card under test + * @scratch: transfer buffer + * @buffer: transfer buffer + * @highmem: buffer for highmem tests + * @area: information for performance tests + * @gr: pointer to results of current testcase + */ struct mmc_test_card { struct mmc_card *card; @@ -32,6 +145,29 @@ struct mmc_test_card { #ifdef CONFIG_HIGHMEM struct page *highmem; #endif + struct mmc_test_area area; + struct mmc_test_general_result *gr; +}; + +enum mmc_test_prep_media { + MMC_TEST_PREP_NONE = 0, + MMC_TEST_PREP_WRITE_FULL = 1 << 0, + MMC_TEST_PREP_ERASE = 1 << 1, +}; + +struct mmc_test_multiple_rw { + unsigned int *sg_len; + unsigned int *bs; + unsigned int len; + unsigned int size; + bool do_write; + bool do_nonblock_req; + enum mmc_test_prep_media prepare; +}; + +struct mmc_test_async_req { + struct mmc_async_req areq; + struct mmc_test_card *test; }; /*******************************************************************/ @@ -43,17 +179,7 @@ struct mmc_test_card { */ static int mmc_test_set_blksize(struct mmc_test_card *test, unsigned size) { - struct mmc_command cmd; - int ret; - - cmd.opcode = MMC_SET_BLOCKLEN; - cmd.arg = size; - cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; - ret = mmc_wait_for_cmd(test->card->host, &cmd, 0); - if (ret) - return ret; - - return 0; + return mmc_set_blocklen(test->card, size); } /* @@ -74,6 +200,9 @@ static void mmc_test_prepare_mrq(struct mmc_test_card *test, } mrq->cmd->arg = dev_addr; + if (!mmc_card_blockaddr(test->card)) + mrq->cmd->arg <<= 9; + mrq->cmd->flags = MMC_RSP_R1 | MMC_CMD_ADTC; if (blocks == 1) @@ -93,13 +222,19 @@ static void mmc_test_prepare_mrq(struct mmc_test_card *test, mmc_set_data_timeout(mrq->data, test->card); } +static int mmc_test_busy(struct mmc_command *cmd) +{ + return !(cmd->resp[0] & R1_READY_FOR_DATA) || + (R1_CURRENT_STATE(cmd->resp[0]) == R1_STATE_PRG); +} + /* * Wait for the card to finish the busy state */ static int mmc_test_wait_busy(struct mmc_test_card *test) { int ret, busy; - struct mmc_command cmd; + struct mmc_command cmd = {0}; busy = 0; do { @@ -113,13 +248,14 @@ static int mmc_test_wait_busy(struct mmc_test_card *test) if (ret) break; - if (!busy && !(cmd.resp[0] & R1_READY_FOR_DATA)) { + if (!busy && mmc_test_busy(&cmd)) { busy = 1; - printk(KERN_INFO "%s: Warning: Host did not " - "wait for busy state to end.\n", - mmc_hostname(test->card->host)); + if (test->card->host->caps & MMC_CAP_WAIT_WHILE_BUSY) + pr_info("%s: Warning: Host did not " + "wait for busy state to end.\n", + mmc_hostname(test->card->host)); } - } while (!(cmd.resp[0] & R1_READY_FOR_DATA)); + } while (mmc_test_busy(&cmd)); return ret; } @@ -132,18 +268,13 @@ static int mmc_test_buffer_transfer(struct mmc_test_card *test, { int ret; - struct mmc_request mrq; - struct mmc_command cmd; - struct mmc_command stop; - struct mmc_data data; + struct mmc_request mrq = {0}; + struct mmc_command cmd = {0}; + struct mmc_command stop = {0}; + struct mmc_data data = {0}; struct scatterlist sg; - memset(&mrq, 0, sizeof(struct mmc_request)); - memset(&cmd, 0, sizeof(struct mmc_command)); - memset(&data, 0, sizeof(struct mmc_data)); - memset(&stop, 0, sizeof(struct mmc_command)); - mrq.cmd = &cmd; mrq.data = &data; mrq.stop = &stop; @@ -166,6 +297,311 @@ static int mmc_test_buffer_transfer(struct mmc_test_card *test, return 0; } +static void mmc_test_free_mem(struct mmc_test_mem *mem) +{ + if (!mem) + return; + while (mem->cnt--) + __free_pages(mem->arr[mem->cnt].page, + mem->arr[mem->cnt].order); + kfree(mem->arr); + kfree(mem); +} + +/* + * Allocate a lot of memory, preferably max_sz but at least min_sz. In case + * there isn't much memory do not exceed 1/16th total lowmem pages. Also do + * not exceed a maximum number of segments and try not to make segments much + * bigger than maximum segment size. + */ +static struct mmc_test_mem *mmc_test_alloc_mem(unsigned long min_sz, + unsigned long max_sz, + unsigned int max_segs, + unsigned int max_seg_sz) +{ + unsigned long max_page_cnt = DIV_ROUND_UP(max_sz, PAGE_SIZE); + unsigned long min_page_cnt = DIV_ROUND_UP(min_sz, PAGE_SIZE); + unsigned long max_seg_page_cnt = DIV_ROUND_UP(max_seg_sz, PAGE_SIZE); + unsigned long page_cnt = 0; + unsigned long limit = nr_free_buffer_pages() >> 4; + struct mmc_test_mem *mem; + + if (max_page_cnt > limit) + max_page_cnt = limit; + if (min_page_cnt > max_page_cnt) + min_page_cnt = max_page_cnt; + + if (max_seg_page_cnt > max_page_cnt) + max_seg_page_cnt = max_page_cnt; + + if (max_segs > max_page_cnt) + max_segs = max_page_cnt; + + mem = kzalloc(sizeof(struct mmc_test_mem), GFP_KERNEL); + if (!mem) + return NULL; + + mem->arr = kzalloc(sizeof(struct mmc_test_pages) * max_segs, + GFP_KERNEL); + if (!mem->arr) + goto out_free; + + while (max_page_cnt) { + struct page *page; + unsigned int order; + gfp_t flags = GFP_KERNEL | GFP_DMA | __GFP_NOWARN | + __GFP_NORETRY; + + order = get_order(max_seg_page_cnt << PAGE_SHIFT); + while (1) { + page = alloc_pages(flags, order); + if (page || !order) + break; + order -= 1; + } + if (!page) { + if (page_cnt < min_page_cnt) + goto out_free; + break; + } + mem->arr[mem->cnt].page = page; + mem->arr[mem->cnt].order = order; + mem->cnt += 1; + if (max_page_cnt <= (1UL << order)) + break; + max_page_cnt -= 1UL << order; + page_cnt += 1UL << order; + if (mem->cnt >= max_segs) { + if (page_cnt < min_page_cnt) + goto out_free; + break; + } + } + + return mem; + +out_free: + mmc_test_free_mem(mem); + return NULL; +} + +/* + * Map memory into a scatterlist. Optionally allow the same memory to be + * mapped more than once. + */ +static int mmc_test_map_sg(struct mmc_test_mem *mem, unsigned long size, + struct scatterlist *sglist, int repeat, + unsigned int max_segs, unsigned int max_seg_sz, + unsigned int *sg_len, int min_sg_len) +{ + struct scatterlist *sg = NULL; + unsigned int i; + unsigned long sz = size; + + sg_init_table(sglist, max_segs); + if (min_sg_len > max_segs) + min_sg_len = max_segs; + + *sg_len = 0; + do { + for (i = 0; i < mem->cnt; i++) { + unsigned long len = PAGE_SIZE << mem->arr[i].order; + + if (min_sg_len && (size / min_sg_len < len)) + len = ALIGN(size / min_sg_len, 512); + if (len > sz) + len = sz; + if (len > max_seg_sz) + len = max_seg_sz; + if (sg) + sg = sg_next(sg); + else + sg = sglist; + if (!sg) + return -EINVAL; + sg_set_page(sg, mem->arr[i].page, len, 0); + sz -= len; + *sg_len += 1; + if (!sz) + break; + } + } while (sz && repeat); + + if (sz) + return -EINVAL; + + if (sg) + sg_mark_end(sg); + + return 0; +} + +/* + * Map memory into a scatterlist so that no pages are contiguous. Allow the + * same memory to be mapped more than once. + */ +static int mmc_test_map_sg_max_scatter(struct mmc_test_mem *mem, + unsigned long sz, + struct scatterlist *sglist, + unsigned int max_segs, + unsigned int max_seg_sz, + unsigned int *sg_len) +{ + struct scatterlist *sg = NULL; + unsigned int i = mem->cnt, cnt; + unsigned long len; + void *base, *addr, *last_addr = NULL; + + sg_init_table(sglist, max_segs); + + *sg_len = 0; + while (sz) { + base = page_address(mem->arr[--i].page); + cnt = 1 << mem->arr[i].order; + while (sz && cnt) { + addr = base + PAGE_SIZE * --cnt; + if (last_addr && last_addr + PAGE_SIZE == addr) + continue; + last_addr = addr; + len = PAGE_SIZE; + if (len > max_seg_sz) + len = max_seg_sz; + if (len > sz) + len = sz; + if (sg) + sg = sg_next(sg); + else + sg = sglist; + if (!sg) + return -EINVAL; + sg_set_page(sg, virt_to_page(addr), len, 0); + sz -= len; + *sg_len += 1; + } + if (i == 0) + i = mem->cnt; + } + + if (sg) + sg_mark_end(sg); + + return 0; +} + +/* + * Calculate transfer rate in bytes per second. + */ +static unsigned int mmc_test_rate(uint64_t bytes, struct timespec *ts) +{ + uint64_t ns; + + ns = ts->tv_sec; + ns *= 1000000000; + ns += ts->tv_nsec; + + bytes *= 1000000000; + + while (ns > UINT_MAX) { + bytes >>= 1; + ns >>= 1; + } + + if (!ns) + return 0; + + do_div(bytes, (uint32_t)ns); + + return bytes; +} + +/* + * Save transfer results for future usage + */ +static void mmc_test_save_transfer_result(struct mmc_test_card *test, + unsigned int count, unsigned int sectors, struct timespec ts, + unsigned int rate, unsigned int iops) +{ + struct mmc_test_transfer_result *tr; + + if (!test->gr) + return; + + tr = kmalloc(sizeof(struct mmc_test_transfer_result), GFP_KERNEL); + if (!tr) + return; + + tr->count = count; + tr->sectors = sectors; + tr->ts = ts; + tr->rate = rate; + tr->iops = iops; + + list_add_tail(&tr->link, &test->gr->tr_lst); +} + +/* + * Print the transfer rate. + */ +static void mmc_test_print_rate(struct mmc_test_card *test, uint64_t bytes, + struct timespec *ts1, struct timespec *ts2) +{ + unsigned int rate, iops, sectors = bytes >> 9; + struct timespec ts; + + ts = timespec_sub(*ts2, *ts1); + + rate = mmc_test_rate(bytes, &ts); + iops = mmc_test_rate(100, &ts); /* I/O ops per sec x 100 */ + + pr_info("%s: Transfer of %u sectors (%u%s KiB) took %lu.%09lu " + "seconds (%u kB/s, %u KiB/s, %u.%02u IOPS)\n", + mmc_hostname(test->card->host), sectors, sectors >> 1, + (sectors & 1 ? ".5" : ""), (unsigned long)ts.tv_sec, + (unsigned long)ts.tv_nsec, rate / 1000, rate / 1024, + iops / 100, iops % 100); + + mmc_test_save_transfer_result(test, 1, sectors, ts, rate, iops); +} + +/* + * Print the average transfer rate. + */ +static void mmc_test_print_avg_rate(struct mmc_test_card *test, uint64_t bytes, + unsigned int count, struct timespec *ts1, + struct timespec *ts2) +{ + unsigned int rate, iops, sectors = bytes >> 9; + uint64_t tot = bytes * count; + struct timespec ts; + + ts = timespec_sub(*ts2, *ts1); + + rate = mmc_test_rate(tot, &ts); + iops = mmc_test_rate(count * 100, &ts); /* I/O ops per sec x 100 */ + + pr_info("%s: Transfer of %u x %u sectors (%u x %u%s KiB) took " + "%lu.%09lu seconds (%u kB/s, %u KiB/s, " + "%u.%02u IOPS, sg_len %d)\n", + mmc_hostname(test->card->host), count, sectors, count, + sectors >> 1, (sectors & 1 ? ".5" : ""), + (unsigned long)ts.tv_sec, (unsigned long)ts.tv_nsec, + rate / 1000, rate / 1024, iops / 100, iops % 100, + test->area.sg_len); + + mmc_test_save_transfer_result(test, count, sectors, ts, rate, iops); +} + +/* + * Return the card size in sectors. + */ +static unsigned int mmc_test_capacity(struct mmc_card *card) +{ + if (!mmc_card_sd(card) && mmc_card_blockaddr(card)) + return card->ext_csd.sectors; + else + return card->csd.capacity << (card->csd.read_blkbits - 9); +} + /*******************************************************************/ /* Test preparation and cleanup */ /*******************************************************************/ @@ -190,7 +626,7 @@ static int __mmc_test_prepare(struct mmc_test_card *test, int write) } for (i = 0;i < BUFFER_SIZE / 512;i++) { - ret = mmc_test_buffer_transfer(test, test->buffer, i * 512, 512, 1); + ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1); if (ret) return ret; } @@ -219,7 +655,7 @@ static int mmc_test_cleanup(struct mmc_test_card *test) memset(test->buffer, 0, 512); for (i = 0;i < BUFFER_SIZE / 512;i++) { - ret = mmc_test_buffer_transfer(test, test->buffer, i * 512, 512, 1); + ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1); if (ret) return ret; } @@ -253,7 +689,7 @@ static void mmc_test_prepare_broken_mrq(struct mmc_test_card *test, * Checks that a normal transfer didn't have any errors */ static int mmc_test_check_result(struct mmc_test_card *test, - struct mmc_request *mrq) + struct mmc_request *mrq) { int ret; @@ -277,6 +713,17 @@ static int mmc_test_check_result(struct mmc_test_card *test, return ret; } +static int mmc_test_check_result_async(struct mmc_card *card, + struct mmc_async_req *areq) +{ + struct mmc_test_async_req *test_async = + container_of(areq, struct mmc_test_async_req, areq); + + mmc_test_wait_busy(test_async->test); + + return mmc_test_check_result(test_async->test, areq->mrq); +} + /* * Checks that a "short transfer" behaved as expected */ @@ -312,21 +759,95 @@ static int mmc_test_check_broken_result(struct mmc_test_card *test, } /* + * Tests nonblock transfer with certain parameters + */ +static void mmc_test_nonblock_reset(struct mmc_request *mrq, + struct mmc_command *cmd, + struct mmc_command *stop, + struct mmc_data *data) +{ + memset(mrq, 0, sizeof(struct mmc_request)); + memset(cmd, 0, sizeof(struct mmc_command)); + memset(data, 0, sizeof(struct mmc_data)); + memset(stop, 0, sizeof(struct mmc_command)); + + mrq->cmd = cmd; + mrq->data = data; + mrq->stop = stop; +} +static int mmc_test_nonblock_transfer(struct mmc_test_card *test, + struct scatterlist *sg, unsigned sg_len, + unsigned dev_addr, unsigned blocks, + unsigned blksz, int write, int count) +{ + struct mmc_request mrq1; + struct mmc_command cmd1; + struct mmc_command stop1; + struct mmc_data data1; + + struct mmc_request mrq2; + struct mmc_command cmd2; + struct mmc_command stop2; + struct mmc_data data2; + + struct mmc_test_async_req test_areq[2]; + struct mmc_async_req *done_areq; + struct mmc_async_req *cur_areq = &test_areq[0].areq; + struct mmc_async_req *other_areq = &test_areq[1].areq; + int i; + int ret; + + test_areq[0].test = test; + test_areq[1].test = test; + + mmc_test_nonblock_reset(&mrq1, &cmd1, &stop1, &data1); + mmc_test_nonblock_reset(&mrq2, &cmd2, &stop2, &data2); + + cur_areq->mrq = &mrq1; + cur_areq->err_check = mmc_test_check_result_async; + other_areq->mrq = &mrq2; + other_areq->err_check = mmc_test_check_result_async; + + for (i = 0; i < count; i++) { + mmc_test_prepare_mrq(test, cur_areq->mrq, sg, sg_len, dev_addr, + blocks, blksz, write); + done_areq = mmc_start_req(test->card->host, cur_areq, &ret); + + if (ret || (!done_areq && i > 0)) + goto err; + + if (done_areq) { + if (done_areq->mrq == &mrq2) + mmc_test_nonblock_reset(&mrq2, &cmd2, + &stop2, &data2); + else + mmc_test_nonblock_reset(&mrq1, &cmd1, + &stop1, &data1); + } + done_areq = cur_areq; + cur_areq = other_areq; + other_areq = done_areq; + dev_addr += blocks; + } + + done_areq = mmc_start_req(test->card->host, NULL, &ret); + + return ret; +err: + return ret; +} + +/* * Tests a basic transfer with certain parameters */ static int mmc_test_simple_transfer(struct mmc_test_card *test, struct scatterlist *sg, unsigned sg_len, unsigned dev_addr, unsigned blocks, unsigned blksz, int write) { - struct mmc_request mrq; - struct mmc_command cmd; - struct mmc_command stop; - struct mmc_data data; - - memset(&mrq, 0, sizeof(struct mmc_request)); - memset(&cmd, 0, sizeof(struct mmc_command)); - memset(&data, 0, sizeof(struct mmc_data)); - memset(&stop, 0, sizeof(struct mmc_command)); + struct mmc_request mrq = {0}; + struct mmc_command cmd = {0}; + struct mmc_command stop = {0}; + struct mmc_data data = {0}; mrq.cmd = &cmd; mrq.data = &data; @@ -348,18 +869,13 @@ static int mmc_test_simple_transfer(struct mmc_test_card *test, static int mmc_test_broken_transfer(struct mmc_test_card *test, unsigned blocks, unsigned blksz, int write) { - struct mmc_request mrq; - struct mmc_command cmd; - struct mmc_command stop; - struct mmc_data data; + struct mmc_request mrq = {0}; + struct mmc_command cmd = {0}; + struct mmc_command stop = {0}; + struct mmc_data data = {0}; struct scatterlist sg; - memset(&mrq, 0, sizeof(struct mmc_request)); - memset(&cmd, 0, sizeof(struct mmc_command)); - memset(&data, 0, sizeof(struct mmc_data)); - memset(&stop, 0, sizeof(struct mmc_command)); - mrq.cmd = &cmd; mrq.data = &data; mrq.stop = &stop; @@ -426,7 +942,7 @@ static int mmc_test_transfer(struct mmc_test_card *test, for (i = 0;i < sectors;i++) { ret = mmc_test_buffer_transfer(test, test->buffer + i * 512, - dev_addr + i * 512, 512, 0); + dev_addr + i, 512, 0); if (ret) return ret; } @@ -889,8 +1405,956 @@ static int mmc_test_multi_read_high(struct mmc_test_card *test) return 0; } +#else + +static int mmc_test_no_highmem(struct mmc_test_card *test) +{ + pr_info("%s: Highmem not configured - test skipped\n", + mmc_hostname(test->card->host)); + return 0; +} + #endif /* CONFIG_HIGHMEM */ +/* + * Map sz bytes so that it can be transferred. + */ +static int mmc_test_area_map(struct mmc_test_card *test, unsigned long sz, + int max_scatter, int min_sg_len) +{ + struct mmc_test_area *t = &test->area; + int err; + + t->blocks = sz >> 9; + + if (max_scatter) { + err = mmc_test_map_sg_max_scatter(t->mem, sz, t->sg, + t->max_segs, t->max_seg_sz, + &t->sg_len); + } else { + err = mmc_test_map_sg(t->mem, sz, t->sg, 1, t->max_segs, + t->max_seg_sz, &t->sg_len, min_sg_len); + } + if (err) + pr_info("%s: Failed to map sg list\n", + mmc_hostname(test->card->host)); + return err; +} + +/* + * Transfer bytes mapped by mmc_test_area_map(). + */ +static int mmc_test_area_transfer(struct mmc_test_card *test, + unsigned int dev_addr, int write) +{ + struct mmc_test_area *t = &test->area; + + return mmc_test_simple_transfer(test, t->sg, t->sg_len, dev_addr, + t->blocks, 512, write); +} + +/* + * Map and transfer bytes for multiple transfers. + */ +static int mmc_test_area_io_seq(struct mmc_test_card *test, unsigned long sz, + unsigned int dev_addr, int write, + int max_scatter, int timed, int count, + bool nonblock, int min_sg_len) +{ + struct timespec ts1, ts2; + int ret = 0; + int i; + struct mmc_test_area *t = &test->area; + + /* + * In the case of a maximally scattered transfer, the maximum transfer + * size is further limited by using PAGE_SIZE segments. + */ + if (max_scatter) { + struct mmc_test_area *t = &test->area; + unsigned long max_tfr; + + if (t->max_seg_sz >= PAGE_SIZE) + max_tfr = t->max_segs * PAGE_SIZE; + else + max_tfr = t->max_segs * t->max_seg_sz; + if (sz > max_tfr) + sz = max_tfr; + } + + ret = mmc_test_area_map(test, sz, max_scatter, min_sg_len); + if (ret) + return ret; + + if (timed) + getnstimeofday(&ts1); + if (nonblock) + ret = mmc_test_nonblock_transfer(test, t->sg, t->sg_len, + dev_addr, t->blocks, 512, write, count); + else + for (i = 0; i < count && ret == 0; i++) { + ret = mmc_test_area_transfer(test, dev_addr, write); + dev_addr += sz >> 9; + } + + if (ret) + return ret; + + if (timed) + getnstimeofday(&ts2); + + if (timed) + mmc_test_print_avg_rate(test, sz, count, &ts1, &ts2); + + return 0; +} + +static int mmc_test_area_io(struct mmc_test_card *test, unsigned long sz, + unsigned int dev_addr, int write, int max_scatter, + int timed) +{ + return mmc_test_area_io_seq(test, sz, dev_addr, write, max_scatter, + timed, 1, false, 0); +} + +/* + * Write the test area entirely. + */ +static int mmc_test_area_fill(struct mmc_test_card *test) +{ + struct mmc_test_area *t = &test->area; + + return mmc_test_area_io(test, t->max_tfr, t->dev_addr, 1, 0, 0); +} + +/* + * Erase the test area entirely. + */ +static int mmc_test_area_erase(struct mmc_test_card *test) +{ + struct mmc_test_area *t = &test->area; + + if (!mmc_can_erase(test->card)) + return 0; + + return mmc_erase(test->card, t->dev_addr, t->max_sz >> 9, + MMC_ERASE_ARG); +} + +/* + * Cleanup struct mmc_test_area. + */ +static int mmc_test_area_cleanup(struct mmc_test_card *test) +{ + struct mmc_test_area *t = &test->area; + + kfree(t->sg); + mmc_test_free_mem(t->mem); + + return 0; +} + +/* + * Initialize an area for testing large transfers. The test area is set to the + * middle of the card because cards may have different charateristics at the + * front (for FAT file system optimization). Optionally, the area is erased + * (if the card supports it) which may improve write performance. Optionally, + * the area is filled with data for subsequent read tests. + */ +static int mmc_test_area_init(struct mmc_test_card *test, int erase, int fill) +{ + struct mmc_test_area *t = &test->area; + unsigned long min_sz = 64 * 1024, sz; + int ret; + + ret = mmc_test_set_blksize(test, 512); + if (ret) + return ret; + + /* Make the test area size about 4MiB */ + sz = (unsigned long)test->card->pref_erase << 9; + t->max_sz = sz; + while (t->max_sz < 4 * 1024 * 1024) + t->max_sz += sz; + while (t->max_sz > TEST_AREA_MAX_SIZE && t->max_sz > sz) + t->max_sz -= sz; + + t->max_segs = test->card->host->max_segs; + t->max_seg_sz = test->card->host->max_seg_size; + t->max_seg_sz -= t->max_seg_sz % 512; + + t->max_tfr = t->max_sz; + if (t->max_tfr >> 9 > test->card->host->max_blk_count) + t->max_tfr = test->card->host->max_blk_count << 9; + if (t->max_tfr > test->card->host->max_req_size) + t->max_tfr = test->card->host->max_req_size; + if (t->max_tfr / t->max_seg_sz > t->max_segs) + t->max_tfr = t->max_segs * t->max_seg_sz; + + /* + * Try to allocate enough memory for a max. sized transfer. Less is OK + * because the same memory can be mapped into the scatterlist more than + * once. Also, take into account the limits imposed on scatterlist + * segments by the host driver. + */ + t->mem = mmc_test_alloc_mem(min_sz, t->max_tfr, t->max_segs, + t->max_seg_sz); + if (!t->mem) + return -ENOMEM; + + t->sg = kmalloc(sizeof(struct scatterlist) * t->max_segs, GFP_KERNEL); + if (!t->sg) { + ret = -ENOMEM; + goto out_free; + } + + t->dev_addr = mmc_test_capacity(test->card) / 2; + t->dev_addr -= t->dev_addr % (t->max_sz >> 9); + + if (erase) { + ret = mmc_test_area_erase(test); + if (ret) + goto out_free; + } + + if (fill) { + ret = mmc_test_area_fill(test); + if (ret) + goto out_free; + } + + return 0; + +out_free: + mmc_test_area_cleanup(test); + return ret; +} + +/* + * Prepare for large transfers. Do not erase the test area. + */ +static int mmc_test_area_prepare(struct mmc_test_card *test) +{ + return mmc_test_area_init(test, 0, 0); +} + +/* + * Prepare for large transfers. Do erase the test area. + */ +static int mmc_test_area_prepare_erase(struct mmc_test_card *test) +{ + return mmc_test_area_init(test, 1, 0); +} + +/* + * Prepare for large transfers. Erase and fill the test area. + */ +static int mmc_test_area_prepare_fill(struct mmc_test_card *test) +{ + return mmc_test_area_init(test, 1, 1); +} + +/* + * Test best-case performance. Best-case performance is expected from + * a single large transfer. + * + * An additional option (max_scatter) allows the measurement of the same + * transfer but with no contiguous pages in the scatter list. This tests + * the efficiency of DMA to handle scattered pages. + */ +static int mmc_test_best_performance(struct mmc_test_card *test, int write, + int max_scatter) +{ + struct mmc_test_area *t = &test->area; + + return mmc_test_area_io(test, t->max_tfr, t->dev_addr, write, + max_scatter, 1); +} + +/* + * Best-case read performance. + */ +static int mmc_test_best_read_performance(struct mmc_test_card *test) +{ + return mmc_test_best_performance(test, 0, 0); +} + +/* + * Best-case write performance. + */ +static int mmc_test_best_write_performance(struct mmc_test_card *test) +{ + return mmc_test_best_performance(test, 1, 0); +} + +/* + * Best-case read performance into scattered pages. + */ +static int mmc_test_best_read_perf_max_scatter(struct mmc_test_card *test) +{ + return mmc_test_best_performance(test, 0, 1); +} + +/* + * Best-case write performance from scattered pages. + */ +static int mmc_test_best_write_perf_max_scatter(struct mmc_test_card *test) +{ + return mmc_test_best_performance(test, 1, 1); +} + +/* + * Single read performance by transfer size. + */ +static int mmc_test_profile_read_perf(struct mmc_test_card *test) +{ + struct mmc_test_area *t = &test->area; + unsigned long sz; + unsigned int dev_addr; + int ret; + + for (sz = 512; sz < t->max_tfr; sz <<= 1) { + dev_addr = t->dev_addr + (sz >> 9); + ret = mmc_test_area_io(test, sz, dev_addr, 0, 0, 1); + if (ret) + return ret; + } + sz = t->max_tfr; + dev_addr = t->dev_addr; + return mmc_test_area_io(test, sz, dev_addr, 0, 0, 1); +} + +/* + * Single write performance by transfer size. + */ +static int mmc_test_profile_write_perf(struct mmc_test_card *test) +{ + struct mmc_test_area *t = &test->area; + unsigned long sz; + unsigned int dev_addr; + int ret; + + ret = mmc_test_area_erase(test); + if (ret) + return ret; + for (sz = 512; sz < t->max_tfr; sz <<= 1) { + dev_addr = t->dev_addr + (sz >> 9); + ret = mmc_test_area_io(test, sz, dev_addr, 1, 0, 1); + if (ret) + return ret; + } + ret = mmc_test_area_erase(test); + if (ret) + return ret; + sz = t->max_tfr; + dev_addr = t->dev_addr; + return mmc_test_area_io(test, sz, dev_addr, 1, 0, 1); +} + +/* + * Single trim performance by transfer size. + */ +static int mmc_test_profile_trim_perf(struct mmc_test_card *test) +{ + struct mmc_test_area *t = &test->area; + unsigned long sz; + unsigned int dev_addr; + struct timespec ts1, ts2; + int ret; + + if (!mmc_can_trim(test->card)) + return RESULT_UNSUP_CARD; + + if (!mmc_can_erase(test->card)) + return RESULT_UNSUP_HOST; + + for (sz = 512; sz < t->max_sz; sz <<= 1) { + dev_addr = t->dev_addr + (sz >> 9); + getnstimeofday(&ts1); + ret = mmc_erase(test->card, dev_addr, sz >> 9, MMC_TRIM_ARG); + if (ret) + return ret; + getnstimeofday(&ts2); + mmc_test_print_rate(test, sz, &ts1, &ts2); + } + dev_addr = t->dev_addr; + getnstimeofday(&ts1); + ret = mmc_erase(test->card, dev_addr, sz >> 9, MMC_TRIM_ARG); + if (ret) + return ret; + getnstimeofday(&ts2); + mmc_test_print_rate(test, sz, &ts1, &ts2); + return 0; +} + +static int mmc_test_seq_read_perf(struct mmc_test_card *test, unsigned long sz) +{ + struct mmc_test_area *t = &test->area; + unsigned int dev_addr, i, cnt; + struct timespec ts1, ts2; + int ret; + + cnt = t->max_sz / sz; + dev_addr = t->dev_addr; + getnstimeofday(&ts1); + for (i = 0; i < cnt; i++) { + ret = mmc_test_area_io(test, sz, dev_addr, 0, 0, 0); + if (ret) + return ret; + dev_addr += (sz >> 9); + } + getnstimeofday(&ts2); + mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2); + return 0; +} + +/* + * Consecutive read performance by transfer size. + */ +static int mmc_test_profile_seq_read_perf(struct mmc_test_card *test) +{ + struct mmc_test_area *t = &test->area; + unsigned long sz; + int ret; + + for (sz = 512; sz < t->max_tfr; sz <<= 1) { + ret = mmc_test_seq_read_perf(test, sz); + if (ret) + return ret; + } + sz = t->max_tfr; + return mmc_test_seq_read_perf(test, sz); +} + +static int mmc_test_seq_write_perf(struct mmc_test_card *test, unsigned long sz) +{ + struct mmc_test_area *t = &test->area; + unsigned int dev_addr, i, cnt; + struct timespec ts1, ts2; + int ret; + + ret = mmc_test_area_erase(test); + if (ret) + return ret; + cnt = t->max_sz / sz; + dev_addr = t->dev_addr; + getnstimeofday(&ts1); + for (i = 0; i < cnt; i++) { + ret = mmc_test_area_io(test, sz, dev_addr, 1, 0, 0); + if (ret) + return ret; + dev_addr += (sz >> 9); + } + getnstimeofday(&ts2); + mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2); + return 0; +} + +/* + * Consecutive write performance by transfer size. + */ +static int mmc_test_profile_seq_write_perf(struct mmc_test_card *test) +{ + struct mmc_test_area *t = &test->area; + unsigned long sz; + int ret; + + for (sz = 512; sz < t->max_tfr; sz <<= 1) { + ret = mmc_test_seq_write_perf(test, sz); + if (ret) + return ret; + } + sz = t->max_tfr; + return mmc_test_seq_write_perf(test, sz); +} + +/* + * Consecutive trim performance by transfer size. + */ +static int mmc_test_profile_seq_trim_perf(struct mmc_test_card *test) +{ + struct mmc_test_area *t = &test->area; + unsigned long sz; + unsigned int dev_addr, i, cnt; + struct timespec ts1, ts2; + int ret; + + if (!mmc_can_trim(test->card)) + return RESULT_UNSUP_CARD; + + if (!mmc_can_erase(test->card)) + return RESULT_UNSUP_HOST; + + for (sz = 512; sz <= t->max_sz; sz <<= 1) { + ret = mmc_test_area_erase(test); + if (ret) + return ret; + ret = mmc_test_area_fill(test); + if (ret) + return ret; + cnt = t->max_sz / sz; + dev_addr = t->dev_addr; + getnstimeofday(&ts1); + for (i = 0; i < cnt; i++) { + ret = mmc_erase(test->card, dev_addr, sz >> 9, + MMC_TRIM_ARG); + if (ret) + return ret; + dev_addr += (sz >> 9); + } + getnstimeofday(&ts2); + mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2); + } + return 0; +} + +static unsigned int rnd_next = 1; + +static unsigned int mmc_test_rnd_num(unsigned int rnd_cnt) +{ + uint64_t r; + + rnd_next = rnd_next * 1103515245 + 12345; + r = (rnd_next >> 16) & 0x7fff; + return (r * rnd_cnt) >> 15; +} + +static int mmc_test_rnd_perf(struct mmc_test_card *test, int write, int print, + unsigned long sz) +{ + unsigned int dev_addr, cnt, rnd_addr, range1, range2, last_ea = 0, ea; + unsigned int ssz; + struct timespec ts1, ts2, ts; + int ret; + + ssz = sz >> 9; + + rnd_addr = mmc_test_capacity(test->card) / 4; + range1 = rnd_addr / test->card->pref_erase; + range2 = range1 / ssz; + + getnstimeofday(&ts1); + for (cnt = 0; cnt < UINT_MAX; cnt++) { + getnstimeofday(&ts2); + ts = timespec_sub(ts2, ts1); + if (ts.tv_sec >= 10) + break; + ea = mmc_test_rnd_num(range1); + if (ea == last_ea) + ea -= 1; + last_ea = ea; + dev_addr = rnd_addr + test->card->pref_erase * ea + + ssz * mmc_test_rnd_num(range2); + ret = mmc_test_area_io(test, sz, dev_addr, write, 0, 0); + if (ret) + return ret; + } + if (print) + mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2); + return 0; +} + +static int mmc_test_random_perf(struct mmc_test_card *test, int write) +{ + struct mmc_test_area *t = &test->area; + unsigned int next; + unsigned long sz; + int ret; + + for (sz = 512; sz < t->max_tfr; sz <<= 1) { + /* + * When writing, try to get more consistent results by running + * the test twice with exactly the same I/O but outputting the + * results only for the 2nd run. + */ + if (write) { + next = rnd_next; + ret = mmc_test_rnd_perf(test, write, 0, sz); + if (ret) + return ret; + rnd_next = next; + } + ret = mmc_test_rnd_perf(test, write, 1, sz); + if (ret) + return ret; + } + sz = t->max_tfr; + if (write) { + next = rnd_next; + ret = mmc_test_rnd_perf(test, write, 0, sz); + if (ret) + return ret; + rnd_next = next; + } + return mmc_test_rnd_perf(test, write, 1, sz); +} + +/* + * Random read performance by transfer size. + */ +static int mmc_test_random_read_perf(struct mmc_test_card *test) +{ + return mmc_test_random_perf(test, 0); +} + +/* + * Random write performance by transfer size. + */ +static int mmc_test_random_write_perf(struct mmc_test_card *test) +{ + return mmc_test_random_perf(test, 1); +} + +static int mmc_test_seq_perf(struct mmc_test_card *test, int write, + unsigned int tot_sz, int max_scatter) +{ + struct mmc_test_area *t = &test->area; + unsigned int dev_addr, i, cnt, sz, ssz; + struct timespec ts1, ts2; + int ret; + + sz = t->max_tfr; + + /* + * In the case of a maximally scattered transfer, the maximum transfer + * size is further limited by using PAGE_SIZE segments. + */ + if (max_scatter) { + unsigned long max_tfr; + + if (t->max_seg_sz >= PAGE_SIZE) + max_tfr = t->max_segs * PAGE_SIZE; + else + max_tfr = t->max_segs * t->max_seg_sz; + if (sz > max_tfr) + sz = max_tfr; + } + + ssz = sz >> 9; + dev_addr = mmc_test_capacity(test->card) / 4; + if (tot_sz > dev_addr << 9) + tot_sz = dev_addr << 9; + cnt = tot_sz / sz; + dev_addr &= 0xffff0000; /* Round to 64MiB boundary */ + + getnstimeofday(&ts1); + for (i = 0; i < cnt; i++) { + ret = mmc_test_area_io(test, sz, dev_addr, write, + max_scatter, 0); + if (ret) + return ret; + dev_addr += ssz; + } + getnstimeofday(&ts2); + + mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2); + + return 0; +} + +static int mmc_test_large_seq_perf(struct mmc_test_card *test, int write) +{ + int ret, i; + + for (i = 0; i < 10; i++) { + ret = mmc_test_seq_perf(test, write, 10 * 1024 * 1024, 1); + if (ret) + return ret; + } + for (i = 0; i < 5; i++) { + ret = mmc_test_seq_perf(test, write, 100 * 1024 * 1024, 1); + if (ret) + return ret; + } + for (i = 0; i < 3; i++) { + ret = mmc_test_seq_perf(test, write, 1000 * 1024 * 1024, 1); + if (ret) + return ret; + } + + return ret; +} + +/* + * Large sequential read performance. + */ +static int mmc_test_large_seq_read_perf(struct mmc_test_card *test) +{ + return mmc_test_large_seq_perf(test, 0); +} + +/* + * Large sequential write performance. + */ +static int mmc_test_large_seq_write_perf(struct mmc_test_card *test) +{ + return mmc_test_large_seq_perf(test, 1); +} + +static int mmc_test_rw_multiple(struct mmc_test_card *test, + struct mmc_test_multiple_rw *tdata, + unsigned int reqsize, unsigned int size, + int min_sg_len) +{ + unsigned int dev_addr; + struct mmc_test_area *t = &test->area; + int ret = 0; + + /* Set up test area */ + if (size > mmc_test_capacity(test->card) / 2 * 512) + size = mmc_test_capacity(test->card) / 2 * 512; + if (reqsize > t->max_tfr) + reqsize = t->max_tfr; + dev_addr = mmc_test_capacity(test->card) / 4; + if ((dev_addr & 0xffff0000)) + dev_addr &= 0xffff0000; /* Round to 64MiB boundary */ + else + dev_addr &= 0xfffff800; /* Round to 1MiB boundary */ + if (!dev_addr) + goto err; + + if (reqsize > size) + return 0; + + /* prepare test area */ + if (mmc_can_erase(test->card) && + tdata->prepare & MMC_TEST_PREP_ERASE) { + ret = mmc_erase(test->card, dev_addr, + size / 512, MMC_SECURE_ERASE_ARG); + if (ret) + ret = mmc_erase(test->card, dev_addr, + size / 512, MMC_ERASE_ARG); + if (ret) + goto err; + } + + /* Run test */ + ret = mmc_test_area_io_seq(test, reqsize, dev_addr, + tdata->do_write, 0, 1, size / reqsize, + tdata->do_nonblock_req, min_sg_len); + if (ret) + goto err; + + return ret; + err: + pr_info("[%s] error\n", __func__); + return ret; +} + +static int mmc_test_rw_multiple_size(struct mmc_test_card *test, + struct mmc_test_multiple_rw *rw) +{ + int ret = 0; + int i; + void *pre_req = test->card->host->ops->pre_req; + void *post_req = test->card->host->ops->post_req; + + if (rw->do_nonblock_req && + ((!pre_req && post_req) || (pre_req && !post_req))) { + pr_info("error: only one of pre/post is defined\n"); + return -EINVAL; + } + + for (i = 0 ; i < rw->len && ret == 0; i++) { + ret = mmc_test_rw_multiple(test, rw, rw->bs[i], rw->size, 0); + if (ret) + break; + } + return ret; +} + +static int mmc_test_rw_multiple_sg_len(struct mmc_test_card *test, + struct mmc_test_multiple_rw *rw) +{ + int ret = 0; + int i; + + for (i = 0 ; i < rw->len && ret == 0; i++) { + ret = mmc_test_rw_multiple(test, rw, 512*1024, rw->size, + rw->sg_len[i]); + if (ret) + break; + } + return ret; +} + +/* + * Multiple blocking write 4k to 4 MB chunks + */ +static int mmc_test_profile_mult_write_blocking_perf(struct mmc_test_card *test) +{ + unsigned int bs[] = {1 << 12, 1 << 13, 1 << 14, 1 << 15, 1 << 16, + 1 << 17, 1 << 18, 1 << 19, 1 << 20, 1 << 22}; + struct mmc_test_multiple_rw test_data = { + .bs = bs, + .size = TEST_AREA_MAX_SIZE, + .len = ARRAY_SIZE(bs), + .do_write = true, + .do_nonblock_req = false, + .prepare = MMC_TEST_PREP_ERASE, + }; + + return mmc_test_rw_multiple_size(test, &test_data); +}; + +/* + * Multiple non-blocking write 4k to 4 MB chunks + */ +static int mmc_test_profile_mult_write_nonblock_perf(struct mmc_test_card *test) +{ + unsigned int bs[] = {1 << 12, 1 << 13, 1 << 14, 1 << 15, 1 << 16, + 1 << 17, 1 << 18, 1 << 19, 1 << 20, 1 << 22}; + struct mmc_test_multiple_rw test_data = { + .bs = bs, + .size = TEST_AREA_MAX_SIZE, + .len = ARRAY_SIZE(bs), + .do_write = true, + .do_nonblock_req = true, + .prepare = MMC_TEST_PREP_ERASE, + }; + + return mmc_test_rw_multiple_size(test, &test_data); +} + +/* + * Multiple blocking read 4k to 4 MB chunks + */ +static int mmc_test_profile_mult_read_blocking_perf(struct mmc_test_card *test) +{ + unsigned int bs[] = {1 << 12, 1 << 13, 1 << 14, 1 << 15, 1 << 16, + 1 << 17, 1 << 18, 1 << 19, 1 << 20, 1 << 22}; + struct mmc_test_multiple_rw test_data = { + .bs = bs, + .size = TEST_AREA_MAX_SIZE, + .len = ARRAY_SIZE(bs), + .do_write = false, + .do_nonblock_req = false, + .prepare = MMC_TEST_PREP_NONE, + }; + + return mmc_test_rw_multiple_size(test, &test_data); +} + +/* + * Multiple non-blocking read 4k to 4 MB chunks + */ +static int mmc_test_profile_mult_read_nonblock_perf(struct mmc_test_card *test) +{ + unsigned int bs[] = {1 << 12, 1 << 13, 1 << 14, 1 << 15, 1 << 16, + 1 << 17, 1 << 18, 1 << 19, 1 << 20, 1 << 22}; + struct mmc_test_multiple_rw test_data = { + .bs = bs, + .size = TEST_AREA_MAX_SIZE, + .len = ARRAY_SIZE(bs), + .do_write = false, + .do_nonblock_req = true, + .prepare = MMC_TEST_PREP_NONE, + }; + + return mmc_test_rw_multiple_size(test, &test_data); +} + +/* + * Multiple blocking write 1 to 512 sg elements + */ +static int mmc_test_profile_sglen_wr_blocking_perf(struct mmc_test_card *test) +{ + unsigned int sg_len[] = {1, 1 << 3, 1 << 4, 1 << 5, 1 << 6, + 1 << 7, 1 << 8, 1 << 9}; + struct mmc_test_multiple_rw test_data = { + .sg_len = sg_len, + .size = TEST_AREA_MAX_SIZE, + .len = ARRAY_SIZE(sg_len), + .do_write = true, + .do_nonblock_req = false, + .prepare = MMC_TEST_PREP_ERASE, + }; + + return mmc_test_rw_multiple_sg_len(test, &test_data); +}; + +/* + * Multiple non-blocking write 1 to 512 sg elements + */ +static int mmc_test_profile_sglen_wr_nonblock_perf(struct mmc_test_card *test) +{ + unsigned int sg_len[] = {1, 1 << 3, 1 << 4, 1 << 5, 1 << 6, + 1 << 7, 1 << 8, 1 << 9}; + struct mmc_test_multiple_rw test_data = { + .sg_len = sg_len, + .size = TEST_AREA_MAX_SIZE, + .len = ARRAY_SIZE(sg_len), + .do_write = true, + .do_nonblock_req = true, + .prepare = MMC_TEST_PREP_ERASE, + }; + + return mmc_test_rw_multiple_sg_len(test, &test_data); +} + +/* + * Multiple blocking read 1 to 512 sg elements + */ +static int mmc_test_profile_sglen_r_blocking_perf(struct mmc_test_card *test) +{ + unsigned int sg_len[] = {1, 1 << 3, 1 << 4, 1 << 5, 1 << 6, + 1 << 7, 1 << 8, 1 << 9}; + struct mmc_test_multiple_rw test_data = { + .sg_len = sg_len, + .size = TEST_AREA_MAX_SIZE, + .len = ARRAY_SIZE(sg_len), + .do_write = false, + .do_nonblock_req = false, + .prepare = MMC_TEST_PREP_NONE, + }; + + return mmc_test_rw_multiple_sg_len(test, &test_data); +} + +/* + * Multiple non-blocking read 1 to 512 sg elements + */ +static int mmc_test_profile_sglen_r_nonblock_perf(struct mmc_test_card *test) +{ + unsigned int sg_len[] = {1, 1 << 3, 1 << 4, 1 << 5, 1 << 6, + 1 << 7, 1 << 8, 1 << 9}; + struct mmc_test_multiple_rw test_data = { + .sg_len = sg_len, + .size = TEST_AREA_MAX_SIZE, + .len = ARRAY_SIZE(sg_len), + .do_write = false, + .do_nonblock_req = true, + .prepare = MMC_TEST_PREP_NONE, + }; + + return mmc_test_rw_multiple_sg_len(test, &test_data); +} + +/* + * eMMC hardware reset. + */ +static int mmc_test_hw_reset(struct mmc_test_card *test) +{ + struct mmc_card *card = test->card; + struct mmc_host *host = card->host; + int err; + + err = mmc_hw_reset_check(host); + if (!err) + return RESULT_OK; + + if (err == -ENOSYS) + return RESULT_FAIL; + + if (err != -EOPNOTSUPP) + return err; + + if (!mmc_can_reset(card)) + return RESULT_UNSUP_CARD; + + return RESULT_UNSUP_HOST; +} + static const struct mmc_test_case mmc_test_cases[] = { { .name = "Basic write (no data verification)", @@ -1036,33 +2500,217 @@ static const struct mmc_test_case mmc_test_cases[] = { .cleanup = mmc_test_cleanup, }, +#else + + { + .name = "Highmem write", + .run = mmc_test_no_highmem, + }, + + { + .name = "Highmem read", + .run = mmc_test_no_highmem, + }, + + { + .name = "Multi-block highmem write", + .run = mmc_test_no_highmem, + }, + + { + .name = "Multi-block highmem read", + .run = mmc_test_no_highmem, + }, + #endif /* CONFIG_HIGHMEM */ + { + .name = "Best-case read performance", + .prepare = mmc_test_area_prepare_fill, + .run = mmc_test_best_read_performance, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Best-case write performance", + .prepare = mmc_test_area_prepare_erase, + .run = mmc_test_best_write_performance, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Best-case read performance into scattered pages", + .prepare = mmc_test_area_prepare_fill, + .run = mmc_test_best_read_perf_max_scatter, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Best-case write performance from scattered pages", + .prepare = mmc_test_area_prepare_erase, + .run = mmc_test_best_write_perf_max_scatter, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Single read performance by transfer size", + .prepare = mmc_test_area_prepare_fill, + .run = mmc_test_profile_read_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Single write performance by transfer size", + .prepare = mmc_test_area_prepare, + .run = mmc_test_profile_write_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Single trim performance by transfer size", + .prepare = mmc_test_area_prepare_fill, + .run = mmc_test_profile_trim_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Consecutive read performance by transfer size", + .prepare = mmc_test_area_prepare_fill, + .run = mmc_test_profile_seq_read_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Consecutive write performance by transfer size", + .prepare = mmc_test_area_prepare, + .run = mmc_test_profile_seq_write_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Consecutive trim performance by transfer size", + .prepare = mmc_test_area_prepare, + .run = mmc_test_profile_seq_trim_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Random read performance by transfer size", + .prepare = mmc_test_area_prepare, + .run = mmc_test_random_read_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Random write performance by transfer size", + .prepare = mmc_test_area_prepare, + .run = mmc_test_random_write_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Large sequential read into scattered pages", + .prepare = mmc_test_area_prepare, + .run = mmc_test_large_seq_read_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Large sequential write from scattered pages", + .prepare = mmc_test_area_prepare, + .run = mmc_test_large_seq_write_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Write performance with blocking req 4k to 4MB", + .prepare = mmc_test_area_prepare, + .run = mmc_test_profile_mult_write_blocking_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Write performance with non-blocking req 4k to 4MB", + .prepare = mmc_test_area_prepare, + .run = mmc_test_profile_mult_write_nonblock_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Read performance with blocking req 4k to 4MB", + .prepare = mmc_test_area_prepare, + .run = mmc_test_profile_mult_read_blocking_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Read performance with non-blocking req 4k to 4MB", + .prepare = mmc_test_area_prepare, + .run = mmc_test_profile_mult_read_nonblock_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Write performance blocking req 1 to 512 sg elems", + .prepare = mmc_test_area_prepare, + .run = mmc_test_profile_sglen_wr_blocking_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Write performance non-blocking req 1 to 512 sg elems", + .prepare = mmc_test_area_prepare, + .run = mmc_test_profile_sglen_wr_nonblock_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Read performance blocking req 1 to 512 sg elems", + .prepare = mmc_test_area_prepare, + .run = mmc_test_profile_sglen_r_blocking_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "Read performance non-blocking req 1 to 512 sg elems", + .prepare = mmc_test_area_prepare, + .run = mmc_test_profile_sglen_r_nonblock_perf, + .cleanup = mmc_test_area_cleanup, + }, + + { + .name = "eMMC hardware reset", + .run = mmc_test_hw_reset, + }, }; static DEFINE_MUTEX(mmc_test_lock); +static LIST_HEAD(mmc_test_result); + static void mmc_test_run(struct mmc_test_card *test, int testcase) { int i, ret; - printk(KERN_INFO "%s: Starting tests of card %s...\n", + pr_info("%s: Starting tests of card %s...\n", mmc_hostname(test->card->host), mmc_card_id(test->card)); mmc_claim_host(test->card->host); for (i = 0;i < ARRAY_SIZE(mmc_test_cases);i++) { + struct mmc_test_general_result *gr; + if (testcase && ((i + 1) != testcase)) continue; - printk(KERN_INFO "%s: Test case %d. %s...\n", + pr_info("%s: Test case %d. %s...\n", mmc_hostname(test->card->host), i + 1, mmc_test_cases[i].name); if (mmc_test_cases[i].prepare) { ret = mmc_test_cases[i].prepare(test); if (ret) { - printk(KERN_INFO "%s: Result: Prepare " + pr_info("%s: Result: Prepare " "stage failed! (%d)\n", mmc_hostname(test->card->host), ret); @@ -1070,35 +2718,58 @@ static void mmc_test_run(struct mmc_test_card *test, int testcase) } } + gr = kzalloc(sizeof(struct mmc_test_general_result), + GFP_KERNEL); + if (gr) { + INIT_LIST_HEAD(&gr->tr_lst); + + /* Assign data what we know already */ + gr->card = test->card; + gr->testcase = i; + + /* Append container to global one */ + list_add_tail(&gr->link, &mmc_test_result); + + /* + * Save the pointer to created container in our private + * structure. + */ + test->gr = gr; + } + ret = mmc_test_cases[i].run(test); switch (ret) { case RESULT_OK: - printk(KERN_INFO "%s: Result: OK\n", + pr_info("%s: Result: OK\n", mmc_hostname(test->card->host)); break; case RESULT_FAIL: - printk(KERN_INFO "%s: Result: FAILED\n", + pr_info("%s: Result: FAILED\n", mmc_hostname(test->card->host)); break; case RESULT_UNSUP_HOST: - printk(KERN_INFO "%s: Result: UNSUPPORTED " + pr_info("%s: Result: UNSUPPORTED " "(by host)\n", mmc_hostname(test->card->host)); break; case RESULT_UNSUP_CARD: - printk(KERN_INFO "%s: Result: UNSUPPORTED " + pr_info("%s: Result: UNSUPPORTED " "(by card)\n", mmc_hostname(test->card->host)); break; default: - printk(KERN_INFO "%s: Result: ERROR (%d)\n", + pr_info("%s: Result: ERROR (%d)\n", mmc_hostname(test->card->host), ret); } + /* Save the result */ + if (gr) + gr->result = ret; + if (mmc_test_cases[i].cleanup) { ret = mmc_test_cases[i].cleanup(test); if (ret) { - printk(KERN_INFO "%s: Warning: Cleanup " + pr_info("%s: Warning: Cleanup " "stage failed! (%d)\n", mmc_hostname(test->card->host), ret); @@ -1108,34 +2779,93 @@ static void mmc_test_run(struct mmc_test_card *test, int testcase) mmc_release_host(test->card->host); - printk(KERN_INFO "%s: Tests completed.\n", + pr_info("%s: Tests completed.\n", mmc_hostname(test->card->host)); } -static ssize_t mmc_test_show(struct device *dev, - struct device_attribute *attr, char *buf) +static void mmc_test_free_result(struct mmc_card *card) { + struct mmc_test_general_result *gr, *grs; + mutex_lock(&mmc_test_lock); + + list_for_each_entry_safe(gr, grs, &mmc_test_result, link) { + struct mmc_test_transfer_result *tr, *trs; + + if (card && gr->card != card) + continue; + + list_for_each_entry_safe(tr, trs, &gr->tr_lst, link) { + list_del(&tr->link); + kfree(tr); + } + + list_del(&gr->link); + kfree(gr); + } + + mutex_unlock(&mmc_test_lock); +} + +static LIST_HEAD(mmc_test_file_test); + +static int mtf_test_show(struct seq_file *sf, void *data) +{ + struct mmc_card *card = (struct mmc_card *)sf->private; + struct mmc_test_general_result *gr; + + mutex_lock(&mmc_test_lock); + + list_for_each_entry(gr, &mmc_test_result, link) { + struct mmc_test_transfer_result *tr; + + if (gr->card != card) + continue; + + seq_printf(sf, "Test %d: %d\n", gr->testcase + 1, gr->result); + + list_for_each_entry(tr, &gr->tr_lst, link) { + seq_printf(sf, "%u %d %lu.%09lu %u %u.%02u\n", + tr->count, tr->sectors, + (unsigned long)tr->ts.tv_sec, + (unsigned long)tr->ts.tv_nsec, + tr->rate, tr->iops / 100, tr->iops % 100); + } + } + mutex_unlock(&mmc_test_lock); return 0; } -static ssize_t mmc_test_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) +static int mtf_test_open(struct inode *inode, struct file *file) { - struct mmc_card *card; - struct mmc_test_card *test; - int testcase; + return single_open(file, mtf_test_show, inode->i_private); +} - card = container_of(dev, struct mmc_card, dev); +static ssize_t mtf_test_write(struct file *file, const char __user *buf, + size_t count, loff_t *pos) +{ + struct seq_file *sf = (struct seq_file *)file->private_data; + struct mmc_card *card = (struct mmc_card *)sf->private; + struct mmc_test_card *test; + long testcase; + int ret; - testcase = simple_strtol(buf, NULL, 10); + ret = kstrtol_from_user(buf, count, 10, &testcase); + if (ret) + return ret; test = kzalloc(sizeof(struct mmc_test_card), GFP_KERNEL); if (!test) return -ENOMEM; + /* + * Remove all test cases associated with given card. Thus we have only + * actual data of the last run. + */ + mmc_test_free_result(card); + test->card = card; test->buffer = kzalloc(BUFFER_SIZE, GFP_KERNEL); @@ -1162,16 +2892,119 @@ static ssize_t mmc_test_store(struct device *dev, return count; } -static DEVICE_ATTR(test, S_IWUSR | S_IRUGO, mmc_test_show, mmc_test_store); +static const struct file_operations mmc_test_fops_test = { + .open = mtf_test_open, + .read = seq_read, + .write = mtf_test_write, + .llseek = seq_lseek, + .release = single_release, +}; + +static int mtf_testlist_show(struct seq_file *sf, void *data) +{ + int i; + + mutex_lock(&mmc_test_lock); + + for (i = 0; i < ARRAY_SIZE(mmc_test_cases); i++) + seq_printf(sf, "%d:\t%s\n", i+1, mmc_test_cases[i].name); + + mutex_unlock(&mmc_test_lock); + + return 0; +} + +static int mtf_testlist_open(struct inode *inode, struct file *file) +{ + return single_open(file, mtf_testlist_show, inode->i_private); +} + +static const struct file_operations mmc_test_fops_testlist = { + .open = mtf_testlist_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static void mmc_test_free_dbgfs_file(struct mmc_card *card) +{ + struct mmc_test_dbgfs_file *df, *dfs; + + mutex_lock(&mmc_test_lock); + + list_for_each_entry_safe(df, dfs, &mmc_test_file_test, link) { + if (card && df->card != card) + continue; + debugfs_remove(df->file); + list_del(&df->link); + kfree(df); + } + + mutex_unlock(&mmc_test_lock); +} + +static int __mmc_test_register_dbgfs_file(struct mmc_card *card, + const char *name, umode_t mode, const struct file_operations *fops) +{ + struct dentry *file = NULL; + struct mmc_test_dbgfs_file *df; + + if (card->debugfs_root) + file = debugfs_create_file(name, mode, card->debugfs_root, + card, fops); + + if (IS_ERR_OR_NULL(file)) { + dev_err(&card->dev, + "Can't create %s. Perhaps debugfs is disabled.\n", + name); + return -ENODEV; + } + + df = kmalloc(sizeof(struct mmc_test_dbgfs_file), GFP_KERNEL); + if (!df) { + debugfs_remove(file); + dev_err(&card->dev, + "Can't allocate memory for internal usage.\n"); + return -ENOMEM; + } + + df->card = card; + df->file = file; + + list_add(&df->link, &mmc_test_file_test); + return 0; +} + +static int mmc_test_register_dbgfs_file(struct mmc_card *card) +{ + int ret; + + mutex_lock(&mmc_test_lock); + + ret = __mmc_test_register_dbgfs_file(card, "test", S_IWUSR | S_IRUGO, + &mmc_test_fops_test); + if (ret) + goto err; + + ret = __mmc_test_register_dbgfs_file(card, "testlist", S_IRUGO, + &mmc_test_fops_testlist); + if (ret) + goto err; + +err: + mutex_unlock(&mmc_test_lock); + + return ret; +} static int mmc_test_probe(struct mmc_card *card) { int ret; - if ((card->type != MMC_TYPE_MMC) && (card->type != MMC_TYPE_SD)) + if (!mmc_card_mmc(card) && !mmc_card_sd(card)) return -ENODEV; - ret = device_create_file(&card->dev, &dev_attr_test); + ret = mmc_test_register_dbgfs_file(card); if (ret) return ret; @@ -1182,7 +3015,12 @@ static int mmc_test_probe(struct mmc_card *card) static void mmc_test_remove(struct mmc_card *card) { - device_remove_file(&card->dev, &dev_attr_test); + mmc_test_free_result(card); + mmc_test_free_dbgfs_file(card); +} + +static void mmc_test_shutdown(struct mmc_card *card) +{ } static struct mmc_driver mmc_driver = { @@ -1191,6 +3029,7 @@ static struct mmc_driver mmc_driver = { }, .probe = mmc_test_probe, .remove = mmc_test_remove, + .shutdown = mmc_test_shutdown, }; static int __init mmc_test_init(void) @@ -1200,6 +3039,10 @@ static int __init mmc_test_init(void) static void __exit mmc_test_exit(void) { + /* Clear stalled data if card is still plugged */ + mmc_test_free_result(NULL); + mmc_test_free_dbgfs_file(NULL); + mmc_unregister_driver(&mmc_driver); } |