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path: root/drivers/mmc/card/mmc_test.c
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-rw-r--r--drivers/mmc/card/mmc_test.c3052
1 files changed, 3052 insertions, 0 deletions
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
new file mode 100644
index 000000000..53b741398
--- /dev/null
+++ b/drivers/mmc/card/mmc_test.c
@@ -0,0 +1,3052 @@
+/*
+ * linux/drivers/mmc/card/mmc_test.c
+ *
+ * Copyright 2007-2008 Pierre Ossman
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#include <linux/mmc/core.h>
+#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
+#define RESULT_UNSUP_HOST 2
+#define RESULT_UNSUP_CARD 3
+
+#define BUFFER_ORDER 2
+#define BUFFER_SIZE (PAGE_SIZE << BUFFER_ORDER)
+
+#define TEST_ALIGN_END 8
+
+/*
+ * 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;
+
+ u8 scratch[BUFFER_SIZE];
+ u8 *buffer;
+#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;
+};
+
+/*******************************************************************/
+/* General helper functions */
+/*******************************************************************/
+
+/*
+ * Configure correct block size in card
+ */
+static int mmc_test_set_blksize(struct mmc_test_card *test, unsigned size)
+{
+ return mmc_set_blocklen(test->card, size);
+}
+
+/*
+ * Fill in the mmc_request structure given a set of transfer parameters.
+ */
+static void mmc_test_prepare_mrq(struct mmc_test_card *test,
+ struct mmc_request *mrq, struct scatterlist *sg, unsigned sg_len,
+ unsigned dev_addr, unsigned blocks, unsigned blksz, int write)
+{
+ BUG_ON(!mrq || !mrq->cmd || !mrq->data || !mrq->stop);
+
+ if (blocks > 1) {
+ mrq->cmd->opcode = write ?
+ MMC_WRITE_MULTIPLE_BLOCK : MMC_READ_MULTIPLE_BLOCK;
+ } else {
+ mrq->cmd->opcode = write ?
+ MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK;
+ }
+
+ 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)
+ mrq->stop = NULL;
+ else {
+ mrq->stop->opcode = MMC_STOP_TRANSMISSION;
+ mrq->stop->arg = 0;
+ mrq->stop->flags = MMC_RSP_R1B | MMC_CMD_AC;
+ }
+
+ mrq->data->blksz = blksz;
+ mrq->data->blocks = blocks;
+ mrq->data->flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
+ mrq->data->sg = sg;
+ mrq->data->sg_len = sg_len;
+
+ 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 = {0};
+
+ busy = 0;
+ do {
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = MMC_SEND_STATUS;
+ cmd.arg = test->card->rca << 16;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+
+ ret = mmc_wait_for_cmd(test->card->host, &cmd, 0);
+ if (ret)
+ break;
+
+ if (!busy && mmc_test_busy(&cmd)) {
+ busy = 1;
+ 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 (mmc_test_busy(&cmd));
+
+ return ret;
+}
+
+/*
+ * Transfer a single sector of kernel addressable data
+ */
+static int mmc_test_buffer_transfer(struct mmc_test_card *test,
+ u8 *buffer, unsigned addr, unsigned blksz, int write)
+{
+ int ret;
+
+ struct mmc_request mrq = {0};
+ struct mmc_command cmd = {0};
+ struct mmc_command stop = {0};
+ struct mmc_data data = {0};
+
+ struct scatterlist sg;
+
+ mrq.cmd = &cmd;
+ mrq.data = &data;
+ mrq.stop = &stop;
+
+ sg_init_one(&sg, buffer, blksz);
+
+ mmc_test_prepare_mrq(test, &mrq, &sg, 1, addr, 1, blksz, write);
+
+ mmc_wait_for_req(test->card->host, &mrq);
+
+ if (cmd.error)
+ return cmd.error;
+ if (data.error)
+ return data.error;
+
+ ret = mmc_test_wait_busy(test);
+ if (ret)
+ 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, 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 */
+/*******************************************************************/
+
+/*
+ * Fill the first couple of sectors of the card with known data
+ * so that bad reads/writes can be detected
+ */
+static int __mmc_test_prepare(struct mmc_test_card *test, int write)
+{
+ int ret, i;
+
+ ret = mmc_test_set_blksize(test, 512);
+ if (ret)
+ return ret;
+
+ if (write)
+ memset(test->buffer, 0xDF, 512);
+ else {
+ for (i = 0;i < 512;i++)
+ test->buffer[i] = i;
+ }
+
+ for (i = 0;i < BUFFER_SIZE / 512;i++) {
+ ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mmc_test_prepare_write(struct mmc_test_card *test)
+{
+ return __mmc_test_prepare(test, 1);
+}
+
+static int mmc_test_prepare_read(struct mmc_test_card *test)
+{
+ return __mmc_test_prepare(test, 0);
+}
+
+static int mmc_test_cleanup(struct mmc_test_card *test)
+{
+ int ret, i;
+
+ ret = mmc_test_set_blksize(test, 512);
+ if (ret)
+ return ret;
+
+ memset(test->buffer, 0, 512);
+
+ for (i = 0;i < BUFFER_SIZE / 512;i++) {
+ ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+/*******************************************************************/
+/* Test execution helpers */
+/*******************************************************************/
+
+/*
+ * Modifies the mmc_request to perform the "short transfer" tests
+ */
+static void mmc_test_prepare_broken_mrq(struct mmc_test_card *test,
+ struct mmc_request *mrq, int write)
+{
+ BUG_ON(!mrq || !mrq->cmd || !mrq->data);
+
+ if (mrq->data->blocks > 1) {
+ mrq->cmd->opcode = write ?
+ MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK;
+ mrq->stop = NULL;
+ } else {
+ mrq->cmd->opcode = MMC_SEND_STATUS;
+ mrq->cmd->arg = test->card->rca << 16;
+ }
+}
+
+/*
+ * 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)
+{
+ int ret;
+
+ BUG_ON(!mrq || !mrq->cmd || !mrq->data);
+
+ ret = 0;
+
+ if (!ret && mrq->cmd->error)
+ ret = mrq->cmd->error;
+ if (!ret && mrq->data->error)
+ ret = mrq->data->error;
+ if (!ret && mrq->stop && mrq->stop->error)
+ ret = mrq->stop->error;
+ if (!ret && mrq->data->bytes_xfered !=
+ mrq->data->blocks * mrq->data->blksz)
+ ret = RESULT_FAIL;
+
+ if (ret == -EINVAL)
+ ret = RESULT_UNSUP_HOST;
+
+ 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
+ */
+static int mmc_test_check_broken_result(struct mmc_test_card *test,
+ struct mmc_request *mrq)
+{
+ int ret;
+
+ BUG_ON(!mrq || !mrq->cmd || !mrq->data);
+
+ ret = 0;
+
+ if (!ret && mrq->cmd->error)
+ ret = mrq->cmd->error;
+ if (!ret && mrq->data->error == 0)
+ ret = RESULT_FAIL;
+ if (!ret && mrq->data->error != -ETIMEDOUT)
+ ret = mrq->data->error;
+ if (!ret && mrq->stop && mrq->stop->error)
+ ret = mrq->stop->error;
+ if (mrq->data->blocks > 1) {
+ if (!ret && mrq->data->bytes_xfered > mrq->data->blksz)
+ ret = RESULT_FAIL;
+ } else {
+ if (!ret && mrq->data->bytes_xfered > 0)
+ ret = RESULT_FAIL;
+ }
+
+ if (ret == -EINVAL)
+ ret = RESULT_UNSUP_HOST;
+
+ return ret;
+}
+
+/*
+ * 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 = {0};
+ struct mmc_command cmd = {0};
+ struct mmc_command stop = {0};
+ struct mmc_data data = {0};
+
+ mrq.cmd = &cmd;
+ mrq.data = &data;
+ mrq.stop = &stop;
+
+ mmc_test_prepare_mrq(test, &mrq, sg, sg_len, dev_addr,
+ blocks, blksz, write);
+
+ mmc_wait_for_req(test->card->host, &mrq);
+
+ mmc_test_wait_busy(test);
+
+ return mmc_test_check_result(test, &mrq);
+}
+
+/*
+ * Tests a transfer where the card will fail completely or partly
+ */
+static int mmc_test_broken_transfer(struct mmc_test_card *test,
+ unsigned blocks, unsigned blksz, int write)
+{
+ struct mmc_request mrq = {0};
+ struct mmc_command cmd = {0};
+ struct mmc_command stop = {0};
+ struct mmc_data data = {0};
+
+ struct scatterlist sg;
+
+ mrq.cmd = &cmd;
+ mrq.data = &data;
+ mrq.stop = &stop;
+
+ sg_init_one(&sg, test->buffer, blocks * blksz);
+
+ mmc_test_prepare_mrq(test, &mrq, &sg, 1, 0, blocks, blksz, write);
+ mmc_test_prepare_broken_mrq(test, &mrq, write);
+
+ mmc_wait_for_req(test->card->host, &mrq);
+
+ mmc_test_wait_busy(test);
+
+ return mmc_test_check_broken_result(test, &mrq);
+}
+
+/*
+ * Does a complete transfer test where data is also validated
+ *
+ * Note: mmc_test_prepare() must have been done before this call
+ */
+static int mmc_test_transfer(struct mmc_test_card *test,
+ struct scatterlist *sg, unsigned sg_len, unsigned dev_addr,
+ unsigned blocks, unsigned blksz, int write)
+{
+ int ret, i;
+ unsigned long flags;
+
+ if (write) {
+ for (i = 0;i < blocks * blksz;i++)
+ test->scratch[i] = i;
+ } else {
+ memset(test->scratch, 0, BUFFER_SIZE);
+ }
+ local_irq_save(flags);
+ sg_copy_from_buffer(sg, sg_len, test->scratch, BUFFER_SIZE);
+ local_irq_restore(flags);
+
+ ret = mmc_test_set_blksize(test, blksz);
+ if (ret)
+ return ret;
+
+ ret = mmc_test_simple_transfer(test, sg, sg_len, dev_addr,
+ blocks, blksz, write);
+ if (ret)
+ return ret;
+
+ if (write) {
+ int sectors;
+
+ ret = mmc_test_set_blksize(test, 512);
+ if (ret)
+ return ret;
+
+ sectors = (blocks * blksz + 511) / 512;
+ if ((sectors * 512) == (blocks * blksz))
+ sectors++;
+
+ if ((sectors * 512) > BUFFER_SIZE)
+ return -EINVAL;
+
+ memset(test->buffer, 0, sectors * 512);
+
+ for (i = 0;i < sectors;i++) {
+ ret = mmc_test_buffer_transfer(test,
+ test->buffer + i * 512,
+ dev_addr + i, 512, 0);
+ if (ret)
+ return ret;
+ }
+
+ for (i = 0;i < blocks * blksz;i++) {
+ if (test->buffer[i] != (u8)i)
+ return RESULT_FAIL;
+ }
+
+ for (;i < sectors * 512;i++) {
+ if (test->buffer[i] != 0xDF)
+ return RESULT_FAIL;
+ }
+ } else {
+ local_irq_save(flags);
+ sg_copy_to_buffer(sg, sg_len, test->scratch, BUFFER_SIZE);
+ local_irq_restore(flags);
+ for (i = 0;i < blocks * blksz;i++) {
+ if (test->scratch[i] != (u8)i)
+ return RESULT_FAIL;
+ }
+ }
+
+ return 0;
+}
+
+/*******************************************************************/
+/* Tests */
+/*******************************************************************/
+
+struct mmc_test_case {
+ const char *name;
+
+ int (*prepare)(struct mmc_test_card *);
+ int (*run)(struct mmc_test_card *);
+ int (*cleanup)(struct mmc_test_card *);
+};
+
+static int mmc_test_basic_write(struct mmc_test_card *test)
+{
+ int ret;
+ struct scatterlist sg;
+
+ ret = mmc_test_set_blksize(test, 512);
+ if (ret)
+ return ret;
+
+ sg_init_one(&sg, test->buffer, 512);
+
+ ret = mmc_test_simple_transfer(test, &sg, 1, 0, 1, 512, 1);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_basic_read(struct mmc_test_card *test)
+{
+ int ret;
+ struct scatterlist sg;
+
+ ret = mmc_test_set_blksize(test, 512);
+ if (ret)
+ return ret;
+
+ sg_init_one(&sg, test->buffer, 512);
+
+ ret = mmc_test_simple_transfer(test, &sg, 1, 0, 1, 512, 0);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_verify_write(struct mmc_test_card *test)
+{
+ int ret;
+ struct scatterlist sg;
+
+ sg_init_one(&sg, test->buffer, 512);
+
+ ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_verify_read(struct mmc_test_card *test)
+{
+ int ret;
+ struct scatterlist sg;
+
+ sg_init_one(&sg, test->buffer, 512);
+
+ ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_multi_write(struct mmc_test_card *test)
+{
+ int ret;
+ unsigned int size;
+ struct scatterlist sg;
+
+ if (test->card->host->max_blk_count == 1)
+ return RESULT_UNSUP_HOST;
+
+ size = PAGE_SIZE * 2;
+ size = min(size, test->card->host->max_req_size);
+ size = min(size, test->card->host->max_seg_size);
+ size = min(size, test->card->host->max_blk_count * 512);
+
+ if (size < 1024)
+ return RESULT_UNSUP_HOST;
+
+ sg_init_one(&sg, test->buffer, size);
+
+ ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_multi_read(struct mmc_test_card *test)
+{
+ int ret;
+ unsigned int size;
+ struct scatterlist sg;
+
+ if (test->card->host->max_blk_count == 1)
+ return RESULT_UNSUP_HOST;
+
+ size = PAGE_SIZE * 2;
+ size = min(size, test->card->host->max_req_size);
+ size = min(size, test->card->host->max_seg_size);
+ size = min(size, test->card->host->max_blk_count * 512);
+
+ if (size < 1024)
+ return RESULT_UNSUP_HOST;
+
+ sg_init_one(&sg, test->buffer, size);
+
+ ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_pow2_write(struct mmc_test_card *test)
+{
+ int ret, i;
+ struct scatterlist sg;
+
+ if (!test->card->csd.write_partial)
+ return RESULT_UNSUP_CARD;
+
+ for (i = 1; i < 512;i <<= 1) {
+ sg_init_one(&sg, test->buffer, i);
+ ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 1);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mmc_test_pow2_read(struct mmc_test_card *test)
+{
+ int ret, i;
+ struct scatterlist sg;
+
+ if (!test->card->csd.read_partial)
+ return RESULT_UNSUP_CARD;
+
+ for (i = 1; i < 512;i <<= 1) {
+ sg_init_one(&sg, test->buffer, i);
+ ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 0);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mmc_test_weird_write(struct mmc_test_card *test)
+{
+ int ret, i;
+ struct scatterlist sg;
+
+ if (!test->card->csd.write_partial)
+ return RESULT_UNSUP_CARD;
+
+ for (i = 3; i < 512;i += 7) {
+ sg_init_one(&sg, test->buffer, i);
+ ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 1);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mmc_test_weird_read(struct mmc_test_card *test)
+{
+ int ret, i;
+ struct scatterlist sg;
+
+ if (!test->card->csd.read_partial)
+ return RESULT_UNSUP_CARD;
+
+ for (i = 3; i < 512;i += 7) {
+ sg_init_one(&sg, test->buffer, i);
+ ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 0);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mmc_test_align_write(struct mmc_test_card *test)
+{
+ int ret, i;
+ struct scatterlist sg;
+
+ for (i = 1; i < TEST_ALIGN_END; i++) {
+ sg_init_one(&sg, test->buffer + i, 512);
+ ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mmc_test_align_read(struct mmc_test_card *test)
+{
+ int ret, i;
+ struct scatterlist sg;
+
+ for (i = 1; i < TEST_ALIGN_END; i++) {
+ sg_init_one(&sg, test->buffer + i, 512);
+ ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mmc_test_align_multi_write(struct mmc_test_card *test)
+{
+ int ret, i;
+ unsigned int size;
+ struct scatterlist sg;
+
+ if (test->card->host->max_blk_count == 1)
+ return RESULT_UNSUP_HOST;
+
+ size = PAGE_SIZE * 2;
+ size = min(size, test->card->host->max_req_size);
+ size = min(size, test->card->host->max_seg_size);
+ size = min(size, test->card->host->max_blk_count * 512);
+
+ if (size < 1024)
+ return RESULT_UNSUP_HOST;
+
+ for (i = 1; i < TEST_ALIGN_END; i++) {
+ sg_init_one(&sg, test->buffer + i, size);
+ ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mmc_test_align_multi_read(struct mmc_test_card *test)
+{
+ int ret, i;
+ unsigned int size;
+ struct scatterlist sg;
+
+ if (test->card->host->max_blk_count == 1)
+ return RESULT_UNSUP_HOST;
+
+ size = PAGE_SIZE * 2;
+ size = min(size, test->card->host->max_req_size);
+ size = min(size, test->card->host->max_seg_size);
+ size = min(size, test->card->host->max_blk_count * 512);
+
+ if (size < 1024)
+ return RESULT_UNSUP_HOST;
+
+ for (i = 1; i < TEST_ALIGN_END; i++) {
+ sg_init_one(&sg, test->buffer + i, size);
+ ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mmc_test_xfersize_write(struct mmc_test_card *test)
+{
+ int ret;
+
+ ret = mmc_test_set_blksize(test, 512);
+ if (ret)
+ return ret;
+
+ ret = mmc_test_broken_transfer(test, 1, 512, 1);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_xfersize_read(struct mmc_test_card *test)
+{
+ int ret;
+
+ ret = mmc_test_set_blksize(test, 512);
+ if (ret)
+ return ret;
+
+ ret = mmc_test_broken_transfer(test, 1, 512, 0);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_multi_xfersize_write(struct mmc_test_card *test)
+{
+ int ret;
+
+ if (test->card->host->max_blk_count == 1)
+ return RESULT_UNSUP_HOST;
+
+ ret = mmc_test_set_blksize(test, 512);
+ if (ret)
+ return ret;
+
+ ret = mmc_test_broken_transfer(test, 2, 512, 1);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_multi_xfersize_read(struct mmc_test_card *test)
+{
+ int ret;
+
+ if (test->card->host->max_blk_count == 1)
+ return RESULT_UNSUP_HOST;
+
+ ret = mmc_test_set_blksize(test, 512);
+ if (ret)
+ return ret;
+
+ ret = mmc_test_broken_transfer(test, 2, 512, 0);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+#ifdef CONFIG_HIGHMEM
+
+static int mmc_test_write_high(struct mmc_test_card *test)
+{
+ int ret;
+ struct scatterlist sg;
+
+ sg_init_table(&sg, 1);
+ sg_set_page(&sg, test->highmem, 512, 0);
+
+ ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_read_high(struct mmc_test_card *test)
+{
+ int ret;
+ struct scatterlist sg;
+
+ sg_init_table(&sg, 1);
+ sg_set_page(&sg, test->highmem, 512, 0);
+
+ ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_multi_write_high(struct mmc_test_card *test)
+{
+ int ret;
+ unsigned int size;
+ struct scatterlist sg;
+
+ if (test->card->host->max_blk_count == 1)
+ return RESULT_UNSUP_HOST;
+
+ size = PAGE_SIZE * 2;
+ size = min(size, test->card->host->max_req_size);
+ size = min(size, test->card->host->max_seg_size);
+ size = min(size, test->card->host->max_blk_count * 512);
+
+ if (size < 1024)
+ return RESULT_UNSUP_HOST;
+
+ sg_init_table(&sg, 1);
+ sg_set_page(&sg, test->highmem, size, 0);
+
+ ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_multi_read_high(struct mmc_test_card *test)
+{
+ int ret;
+ unsigned int size;
+ struct scatterlist sg;
+
+ if (test->card->host->max_blk_count == 1)
+ return RESULT_UNSUP_HOST;
+
+ size = PAGE_SIZE * 2;
+ size = min(size, test->card->host->max_req_size);
+ size = min(size, test->card->host->max_seg_size);
+ size = min(size, test->card->host->max_blk_count * 512);
+
+ if (size < 1024)
+ return RESULT_UNSUP_HOST;
+
+ sg_init_table(&sg, 1);
+ sg_set_page(&sg, test->highmem, size, 0);
+
+ ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
+ if (ret)
+ return ret;
+
+ 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;
+
+ if (!mmc_card_mmc(card) || !mmc_can_reset(card))
+ return RESULT_UNSUP_CARD;
+
+ err = mmc_hw_reset(host);
+ if (!err)
+ return RESULT_OK;
+ else if (err == -EOPNOTSUPP)
+ return RESULT_UNSUP_HOST;
+
+ return RESULT_FAIL;
+}
+
+static const struct mmc_test_case mmc_test_cases[] = {
+ {
+ .name = "Basic write (no data verification)",
+ .run = mmc_test_basic_write,
+ },
+
+ {
+ .name = "Basic read (no data verification)",
+ .run = mmc_test_basic_read,
+ },
+
+ {
+ .name = "Basic write (with data verification)",
+ .prepare = mmc_test_prepare_write,
+ .run = mmc_test_verify_write,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Basic read (with data verification)",
+ .prepare = mmc_test_prepare_read,
+ .run = mmc_test_verify_read,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Multi-block write",
+ .prepare = mmc_test_prepare_write,
+ .run = mmc_test_multi_write,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Multi-block read",
+ .prepare = mmc_test_prepare_read,
+ .run = mmc_test_multi_read,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Power of two block writes",
+ .prepare = mmc_test_prepare_write,
+ .run = mmc_test_pow2_write,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Power of two block reads",
+ .prepare = mmc_test_prepare_read,
+ .run = mmc_test_pow2_read,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Weird sized block writes",
+ .prepare = mmc_test_prepare_write,
+ .run = mmc_test_weird_write,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Weird sized block reads",
+ .prepare = mmc_test_prepare_read,
+ .run = mmc_test_weird_read,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Badly aligned write",
+ .prepare = mmc_test_prepare_write,
+ .run = mmc_test_align_write,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Badly aligned read",
+ .prepare = mmc_test_prepare_read,
+ .run = mmc_test_align_read,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Badly aligned multi-block write",
+ .prepare = mmc_test_prepare_write,
+ .run = mmc_test_align_multi_write,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Badly aligned multi-block read",
+ .prepare = mmc_test_prepare_read,
+ .run = mmc_test_align_multi_read,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Correct xfer_size at write (start failure)",
+ .run = mmc_test_xfersize_write,
+ },
+
+ {
+ .name = "Correct xfer_size at read (start failure)",
+ .run = mmc_test_xfersize_read,
+ },
+
+ {
+ .name = "Correct xfer_size at write (midway failure)",
+ .run = mmc_test_multi_xfersize_write,
+ },
+
+ {
+ .name = "Correct xfer_size at read (midway failure)",
+ .run = mmc_test_multi_xfersize_read,
+ },
+
+#ifdef CONFIG_HIGHMEM
+
+ {
+ .name = "Highmem write",
+ .prepare = mmc_test_prepare_write,
+ .run = mmc_test_write_high,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Highmem read",
+ .prepare = mmc_test_prepare_read,
+ .run = mmc_test_read_high,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Multi-block highmem write",
+ .prepare = mmc_test_prepare_write,
+ .run = mmc_test_multi_write_high,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Multi-block highmem read",
+ .prepare = mmc_test_prepare_read,
+ .run = mmc_test_multi_read_high,
+ .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;
+
+ 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;
+
+ 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) {
+ pr_info("%s: Result: Prepare "
+ "stage failed! (%d)\n",
+ mmc_hostname(test->card->host),
+ ret);
+ continue;
+ }
+ }
+
+ 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:
+ pr_info("%s: Result: OK\n",
+ mmc_hostname(test->card->host));
+ break;
+ case RESULT_FAIL:
+ pr_info("%s: Result: FAILED\n",
+ mmc_hostname(test->card->host));
+ break;
+ case RESULT_UNSUP_HOST:
+ pr_info("%s: Result: UNSUPPORTED "
+ "(by host)\n",
+ mmc_hostname(test->card->host));
+ break;
+ case RESULT_UNSUP_CARD:
+ pr_info("%s: Result: UNSUPPORTED "
+ "(by card)\n",
+ mmc_hostname(test->card->host));
+ break;
+ default:
+ 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) {
+ pr_info("%s: Warning: Cleanup "
+ "stage failed! (%d)\n",
+ mmc_hostname(test->card->host),
+ ret);
+ }
+ }
+ }
+
+ mmc_release_host(test->card->host);
+
+ pr_info("%s: Tests completed.\n",
+ mmc_hostname(test->card->host));
+}
+
+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 int mtf_test_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, mtf_test_show, inode->i_private);
+}
+
+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;
+
+ 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);
+#ifdef CONFIG_HIGHMEM
+ test->highmem = alloc_pages(GFP_KERNEL | __GFP_HIGHMEM, BUFFER_ORDER);
+#endif
+
+#ifdef CONFIG_HIGHMEM
+ if (test->buffer && test->highmem) {
+#else
+ if (test->buffer) {
+#endif
+ mutex_lock(&mmc_test_lock);
+ mmc_test_run(test, testcase);
+ mutex_unlock(&mmc_test_lock);
+ }
+
+#ifdef CONFIG_HIGHMEM
+ __free_pages(test->highmem, BUFFER_ORDER);
+#endif
+ kfree(test->buffer);
+ kfree(test);
+
+ return count;
+}
+
+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 (!mmc_card_mmc(card) && !mmc_card_sd(card))
+ return -ENODEV;
+
+ ret = mmc_test_register_dbgfs_file(card);
+ if (ret)
+ return ret;
+
+ dev_info(&card->dev, "Card claimed for testing.\n");
+
+ return 0;
+}
+
+static void mmc_test_remove(struct mmc_card *card)
+{
+ 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 = {
+ .drv = {
+ .name = "mmc_test",
+ },
+ .probe = mmc_test_probe,
+ .remove = mmc_test_remove,
+ .shutdown = mmc_test_shutdown,
+};
+
+static int __init mmc_test_init(void)
+{
+ return mmc_register_driver(&mmc_driver);
+}
+
+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);
+}
+
+module_init(mmc_test_init);
+module_exit(mmc_test_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Multimedia Card (MMC) host test driver");
+MODULE_AUTHOR("Pierre Ossman");
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-24 08:30:01 +0000