#include <linux/slab.h>
#include <linux/scatterlist.h>
+#include <linux/swap.h> /* For nr_free_buffer_pages() */
#define RESULT_OK 0
#define RESULT_FAIL 1
#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_card - test information.
+ * @card: card under test
+ * @scratch: transfer buffer
+ * @buffer: transfer buffer
+ * @highmem: buffer for highmem tests
+ * @area: information for performance tests
+ */
struct mmc_test_card {
struct mmc_card *card;
#ifdef CONFIG_HIGHMEM
struct page *highmem;
#endif
+ struct mmc_test_area area;
};
/*******************************************************************/
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]) == 7);
+}
+
/*
* Wait for the card to finish the busy state
*/
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));
}
- } while (!(cmd.resp[0] & R1_READY_FOR_DATA));
+ } while (mmc_test_busy(&cmd));
return ret;
}
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, preferrably 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 (max_page_cnt < min_page_cnt)
+ max_page_cnt = min_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;
+ if (mem->cnt >= max_segs) {
+ if (page_cnt < min_page_cnt)
+ goto out_free;
+ break;
+ }
+ max_page_cnt -= 1UL << order;
+ page_cnt += 1UL << order;
+ }
+
+ 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 sz,
+ struct scatterlist *sglist, int repeat,
+ unsigned int max_segs, unsigned int max_seg_sz,
+ unsigned int *sg_len)
+{
+ struct scatterlist *sg = NULL;
+ unsigned int i;
+
+ sg_init_table(sglist, max_segs);
+
+ *sg_len = 0;
+ do {
+ for (i = 0; i < mem->cnt; i++) {
+ unsigned long len = PAGE_SIZE << mem->arr[i].order;
+
+ 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;
+}
+
+/*
+ * 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, sectors = bytes >> 9;
+ struct timespec ts;
+
+ ts = timespec_sub(*ts2, *ts1);
+
+ rate = mmc_test_rate(bytes, &ts);
+
+ printk(KERN_INFO "%s: Transfer of %u sectors (%u%s KiB) took %lu.%09lu "
+ "seconds (%u kB/s, %u KiB/s)\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);
+}
+
+/*
+ * 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, sectors = bytes >> 9;
+ uint64_t tot = bytes * count;
+ struct timespec ts;
+
+ ts = timespec_sub(*ts2, *ts1);
+
+ rate = mmc_test_rate(tot, &ts);
+
+ printk(KERN_INFO "%s: Transfer of %u x %u sectors (%u x %u%s KiB) took "
+ "%lu.%09lu seconds (%u kB/s, %u KiB/s)\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);
+}
+
+/*
+ * 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 */
/*******************************************************************/
return 0;
}
+#else
+
+static int mmc_test_no_highmem(struct mmc_test_card *test)
+{
+ printk(KERN_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)
+{
+ 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);
+ }
+ if (err)
+ printk(KERN_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.
+ */
+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)
+{
+ struct timespec ts1, ts2;
+ int ret;
+
+ /*
+ * 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);
+ if (ret)
+ return ret;
+
+ if (timed)
+ getnstimeofday(&ts1);
+
+ ret = mmc_test_area_transfer(test, dev_addr, write);
+ if (ret)
+ return ret;
+
+ if (timed)
+ getnstimeofday(&ts2);
+
+ if (timed)
+ mmc_test_print_rate(test, sz, &ts1, &ts2);
+
+ return 0;
+}
+
+/*
+ * Write the test area entirely.
+ */
+static int mmc_test_area_fill(struct mmc_test_card *test)
+{
+ return mmc_test_area_io(test, test->area.max_tfr, test->area.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, test->area.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 size of the area is the
+ * preferred erase size which is a good size for optimal transfer speed. Note
+ * that is typically 4MiB for modern cards. 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;
+ int ret;
+
+ ret = mmc_test_set_blksize(test, 512);
+ if (ret)
+ return ret;
+
+ if (test->card->pref_erase > TEST_AREA_MAX_SIZE >> 9)
+ t->max_sz = TEST_AREA_MAX_SIZE;
+ else
+ t->max_sz = (unsigned long)test->card->pref_erase << 9;
+
+ t->max_segs = test->card->host->max_segs;
+ t->max_seg_sz = test->card->host->max_seg_size;
+
+ 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 the whole area. 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_sz, 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)
+{
+ return mmc_test_area_io(test, test->area.max_tfr, test->area.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)
+{
+ unsigned long sz;
+ unsigned int dev_addr;
+ int ret;
+
+ for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
+ dev_addr = test->area.dev_addr + (sz >> 9);
+ ret = mmc_test_area_io(test, sz, dev_addr, 0, 0, 1);
+ if (ret)
+ return ret;
+ }
+ sz = test->area.max_tfr;
+ dev_addr = test->area.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)
+{
+ unsigned long sz;
+ unsigned int dev_addr;
+ int ret;
+
+ ret = mmc_test_area_erase(test);
+ if (ret)
+ return ret;
+ for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
+ dev_addr = test->area.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 = test->area.max_tfr;
+ dev_addr = test->area.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)
+{
+ 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 < test->area.max_sz; sz <<= 1) {
+ dev_addr = test->area.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 = test->area.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)
+{
+ unsigned int dev_addr, i, cnt;
+ struct timespec ts1, ts2;
+ int ret;
+
+ cnt = test->area.max_sz / sz;
+ dev_addr = test->area.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)
+{
+ unsigned long sz;
+ int ret;
+
+ for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
+ ret = mmc_test_seq_read_perf(test, sz);
+ if (ret)
+ return ret;
+ }
+ sz = test->area.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)
+{
+ unsigned int dev_addr, i, cnt;
+ struct timespec ts1, ts2;
+ int ret;
+
+ ret = mmc_test_area_erase(test);
+ if (ret)
+ return ret;
+ cnt = test->area.max_sz / sz;
+ dev_addr = test->area.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)
+{
+ unsigned long sz;
+ int ret;
+
+ for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
+ ret = mmc_test_seq_write_perf(test, sz);
+ if (ret)
+ return ret;
+ }
+ sz = test->area.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)
+{
+ 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 <= test->area.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 = test->area.max_sz / sz;
+ dev_addr = test->area.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 const struct mmc_test_case mmc_test_cases[] = {
{
.name = "Basic write (no data verification)",
.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,
+ },
+
};
static DEFINE_MUTEX(mmc_test_lock);
static ssize_t mmc_test_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
- struct mmc_card *card;
+ struct mmc_card *card = mmc_dev_to_card(dev);
struct mmc_test_card *test;
- int testcase;
-
- card = container_of(dev, struct mmc_card, dev);
+ long testcase;
- testcase = simple_strtol(buf, NULL, 10);
+ if (strict_strtol(buf, 10, &testcase))
+ return -EINVAL;
test = kzalloc(sizeof(struct mmc_test_card), GFP_KERNEL);
if (!test)
{
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);
projects / deliverable / linux.git / blobdiff