0f8d8ea64e
The DDR support patch needs the following fixes: - The block driver does not need to know about DDR, any more than it needs to know about bus width. - Not only the card must be switched to DDR mode. The host controller must also be configured, which is done through the 'set_ios()' function. - Do not set the DDR mode state until after the switch command is successful. - Setting block length is not supported in DDR mode. Make that a core function and change the other place it is used (mmc_test) also. Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2337 lines
50 KiB
C
2337 lines
50 KiB
C
/*
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* linux/drivers/mmc/card/mmc_test.c
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*
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* Copyright 2007-2008 Pierre Ossman
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*/
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#include <linux/mmc/core.h>
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#include <linux/mmc/card.h>
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#include <linux/mmc/host.h>
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#include <linux/mmc/mmc.h>
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#include <linux/slab.h>
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#include <linux/scatterlist.h>
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#include <linux/swap.h> /* For nr_free_buffer_pages() */
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#include <linux/list.h>
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#include <linux/debugfs.h>
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#include <linux/uaccess.h>
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#include <linux/seq_file.h>
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#define RESULT_OK 0
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#define RESULT_FAIL 1
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#define RESULT_UNSUP_HOST 2
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#define RESULT_UNSUP_CARD 3
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#define BUFFER_ORDER 2
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#define BUFFER_SIZE (PAGE_SIZE << BUFFER_ORDER)
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/*
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* Limit the test area size to the maximum MMC HC erase group size. Note that
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* the maximum SD allocation unit size is just 4MiB.
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*/
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#define TEST_AREA_MAX_SIZE (128 * 1024 * 1024)
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/**
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* struct mmc_test_pages - pages allocated by 'alloc_pages()'.
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* @page: first page in the allocation
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* @order: order of the number of pages allocated
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*/
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struct mmc_test_pages {
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struct page *page;
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unsigned int order;
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};
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/**
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* struct mmc_test_mem - allocated memory.
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* @arr: array of allocations
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* @cnt: number of allocations
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*/
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struct mmc_test_mem {
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struct mmc_test_pages *arr;
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unsigned int cnt;
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};
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/**
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* struct mmc_test_area - information for performance tests.
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* @max_sz: test area size (in bytes)
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* @dev_addr: address on card at which to do performance tests
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* @max_tfr: maximum transfer size allowed by driver (in bytes)
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* @max_segs: maximum segments allowed by driver in scatterlist @sg
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* @max_seg_sz: maximum segment size allowed by driver
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* @blocks: number of (512 byte) blocks currently mapped by @sg
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* @sg_len: length of currently mapped scatterlist @sg
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* @mem: allocated memory
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* @sg: scatterlist
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*/
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struct mmc_test_area {
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unsigned long max_sz;
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unsigned int dev_addr;
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unsigned int max_tfr;
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unsigned int max_segs;
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unsigned int max_seg_sz;
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unsigned int blocks;
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unsigned int sg_len;
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struct mmc_test_mem *mem;
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struct scatterlist *sg;
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};
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/**
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* struct mmc_test_transfer_result - transfer results for performance tests.
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* @link: double-linked list
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* @count: amount of group of sectors to check
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* @sectors: amount of sectors to check in one group
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* @ts: time values of transfer
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* @rate: calculated transfer rate
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*/
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struct mmc_test_transfer_result {
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struct list_head link;
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unsigned int count;
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unsigned int sectors;
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struct timespec ts;
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unsigned int rate;
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};
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/**
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* struct mmc_test_general_result - results for tests.
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* @link: double-linked list
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* @card: card under test
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* @testcase: number of test case
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* @result: result of test run
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* @tr_lst: transfer measurements if any as mmc_test_transfer_result
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*/
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struct mmc_test_general_result {
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struct list_head link;
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struct mmc_card *card;
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int testcase;
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int result;
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struct list_head tr_lst;
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};
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/**
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* struct mmc_test_dbgfs_file - debugfs related file.
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* @link: double-linked list
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* @card: card under test
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* @file: file created under debugfs
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*/
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struct mmc_test_dbgfs_file {
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struct list_head link;
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struct mmc_card *card;
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struct dentry *file;
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};
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/**
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* struct mmc_test_card - test information.
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* @card: card under test
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* @scratch: transfer buffer
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* @buffer: transfer buffer
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* @highmem: buffer for highmem tests
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* @area: information for performance tests
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* @gr: pointer to results of current testcase
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*/
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struct mmc_test_card {
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struct mmc_card *card;
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u8 scratch[BUFFER_SIZE];
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u8 *buffer;
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#ifdef CONFIG_HIGHMEM
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struct page *highmem;
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#endif
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struct mmc_test_area area;
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struct mmc_test_general_result *gr;
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};
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/*******************************************************************/
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/* General helper functions */
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/*******************************************************************/
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/*
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* Configure correct block size in card
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*/
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static int mmc_test_set_blksize(struct mmc_test_card *test, unsigned size)
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{
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return mmc_set_blocklen(test->card, size);
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}
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/*
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* Fill in the mmc_request structure given a set of transfer parameters.
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*/
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static void mmc_test_prepare_mrq(struct mmc_test_card *test,
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struct mmc_request *mrq, struct scatterlist *sg, unsigned sg_len,
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unsigned dev_addr, unsigned blocks, unsigned blksz, int write)
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{
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BUG_ON(!mrq || !mrq->cmd || !mrq->data || !mrq->stop);
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if (blocks > 1) {
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mrq->cmd->opcode = write ?
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MMC_WRITE_MULTIPLE_BLOCK : MMC_READ_MULTIPLE_BLOCK;
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} else {
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mrq->cmd->opcode = write ?
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MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK;
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}
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mrq->cmd->arg = dev_addr;
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if (!mmc_card_blockaddr(test->card))
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mrq->cmd->arg <<= 9;
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mrq->cmd->flags = MMC_RSP_R1 | MMC_CMD_ADTC;
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if (blocks == 1)
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mrq->stop = NULL;
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else {
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mrq->stop->opcode = MMC_STOP_TRANSMISSION;
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mrq->stop->arg = 0;
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mrq->stop->flags = MMC_RSP_R1B | MMC_CMD_AC;
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}
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mrq->data->blksz = blksz;
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mrq->data->blocks = blocks;
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mrq->data->flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
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mrq->data->sg = sg;
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mrq->data->sg_len = sg_len;
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mmc_set_data_timeout(mrq->data, test->card);
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}
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static int mmc_test_busy(struct mmc_command *cmd)
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{
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return !(cmd->resp[0] & R1_READY_FOR_DATA) ||
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(R1_CURRENT_STATE(cmd->resp[0]) == 7);
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}
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/*
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* Wait for the card to finish the busy state
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*/
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static int mmc_test_wait_busy(struct mmc_test_card *test)
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{
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int ret, busy;
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struct mmc_command cmd;
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busy = 0;
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do {
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memset(&cmd, 0, sizeof(struct mmc_command));
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cmd.opcode = MMC_SEND_STATUS;
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cmd.arg = test->card->rca << 16;
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cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
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ret = mmc_wait_for_cmd(test->card->host, &cmd, 0);
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if (ret)
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break;
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if (!busy && mmc_test_busy(&cmd)) {
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busy = 1;
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printk(KERN_INFO "%s: Warning: Host did not "
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"wait for busy state to end.\n",
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mmc_hostname(test->card->host));
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}
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} while (mmc_test_busy(&cmd));
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return ret;
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}
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/*
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* Transfer a single sector of kernel addressable data
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*/
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static int mmc_test_buffer_transfer(struct mmc_test_card *test,
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u8 *buffer, unsigned addr, unsigned blksz, int write)
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{
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int ret;
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struct mmc_request mrq;
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struct mmc_command cmd;
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struct mmc_command stop;
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struct mmc_data data;
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struct scatterlist sg;
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memset(&mrq, 0, sizeof(struct mmc_request));
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memset(&cmd, 0, sizeof(struct mmc_command));
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memset(&data, 0, sizeof(struct mmc_data));
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memset(&stop, 0, sizeof(struct mmc_command));
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mrq.cmd = &cmd;
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mrq.data = &data;
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mrq.stop = &stop;
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sg_init_one(&sg, buffer, blksz);
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mmc_test_prepare_mrq(test, &mrq, &sg, 1, addr, 1, blksz, write);
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mmc_wait_for_req(test->card->host, &mrq);
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if (cmd.error)
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return cmd.error;
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if (data.error)
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return data.error;
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ret = mmc_test_wait_busy(test);
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if (ret)
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return ret;
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return 0;
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}
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static void mmc_test_free_mem(struct mmc_test_mem *mem)
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{
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if (!mem)
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return;
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while (mem->cnt--)
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__free_pages(mem->arr[mem->cnt].page,
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mem->arr[mem->cnt].order);
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kfree(mem->arr);
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kfree(mem);
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}
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/*
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* Allocate a lot of memory, preferrably max_sz but at least min_sz. In case
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* there isn't much memory do not exceed 1/16th total lowmem pages. Also do
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* not exceed a maximum number of segments and try not to make segments much
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* bigger than maximum segment size.
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*/
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static struct mmc_test_mem *mmc_test_alloc_mem(unsigned long min_sz,
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unsigned long max_sz,
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unsigned int max_segs,
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unsigned int max_seg_sz)
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{
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unsigned long max_page_cnt = DIV_ROUND_UP(max_sz, PAGE_SIZE);
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unsigned long min_page_cnt = DIV_ROUND_UP(min_sz, PAGE_SIZE);
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unsigned long max_seg_page_cnt = DIV_ROUND_UP(max_seg_sz, PAGE_SIZE);
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unsigned long page_cnt = 0;
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unsigned long limit = nr_free_buffer_pages() >> 4;
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struct mmc_test_mem *mem;
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if (max_page_cnt > limit)
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max_page_cnt = limit;
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if (min_page_cnt > max_page_cnt)
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min_page_cnt = max_page_cnt;
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if (max_seg_page_cnt > max_page_cnt)
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max_seg_page_cnt = max_page_cnt;
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if (max_segs > max_page_cnt)
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max_segs = max_page_cnt;
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mem = kzalloc(sizeof(struct mmc_test_mem), GFP_KERNEL);
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if (!mem)
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return NULL;
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mem->arr = kzalloc(sizeof(struct mmc_test_pages) * max_segs,
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GFP_KERNEL);
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if (!mem->arr)
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goto out_free;
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while (max_page_cnt) {
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struct page *page;
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unsigned int order;
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gfp_t flags = GFP_KERNEL | GFP_DMA | __GFP_NOWARN |
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__GFP_NORETRY;
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order = get_order(max_seg_page_cnt << PAGE_SHIFT);
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while (1) {
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page = alloc_pages(flags, order);
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if (page || !order)
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break;
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order -= 1;
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}
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if (!page) {
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if (page_cnt < min_page_cnt)
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goto out_free;
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break;
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}
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mem->arr[mem->cnt].page = page;
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mem->arr[mem->cnt].order = order;
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mem->cnt += 1;
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if (max_page_cnt <= (1UL << order))
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break;
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max_page_cnt -= 1UL << order;
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page_cnt += 1UL << order;
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if (mem->cnt >= max_segs) {
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if (page_cnt < min_page_cnt)
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goto out_free;
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break;
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}
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}
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return mem;
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out_free:
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mmc_test_free_mem(mem);
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return NULL;
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}
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/*
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* Map memory into a scatterlist. Optionally allow the same memory to be
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* mapped more than once.
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*/
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static int mmc_test_map_sg(struct mmc_test_mem *mem, unsigned long sz,
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struct scatterlist *sglist, int repeat,
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unsigned int max_segs, unsigned int max_seg_sz,
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unsigned int *sg_len)
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{
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struct scatterlist *sg = NULL;
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unsigned int i;
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sg_init_table(sglist, max_segs);
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*sg_len = 0;
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do {
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for (i = 0; i < mem->cnt; i++) {
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unsigned long len = PAGE_SIZE << mem->arr[i].order;
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if (len > sz)
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len = sz;
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if (len > max_seg_sz)
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len = max_seg_sz;
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if (sg)
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sg = sg_next(sg);
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else
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sg = sglist;
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if (!sg)
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return -EINVAL;
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sg_set_page(sg, mem->arr[i].page, len, 0);
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sz -= len;
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*sg_len += 1;
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if (!sz)
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break;
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}
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} while (sz && repeat);
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if (sz)
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return -EINVAL;
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if (sg)
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sg_mark_end(sg);
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return 0;
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}
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/*
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* Map memory into a scatterlist so that no pages are contiguous. Allow the
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* same memory to be mapped more than once.
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*/
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static int mmc_test_map_sg_max_scatter(struct mmc_test_mem *mem,
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unsigned long sz,
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struct scatterlist *sglist,
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unsigned int max_segs,
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unsigned int max_seg_sz,
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unsigned int *sg_len)
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{
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struct scatterlist *sg = NULL;
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unsigned int i = mem->cnt, cnt;
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unsigned long len;
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void *base, *addr, *last_addr = NULL;
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sg_init_table(sglist, max_segs);
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*sg_len = 0;
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while (sz) {
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base = page_address(mem->arr[--i].page);
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cnt = 1 << mem->arr[i].order;
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while (sz && cnt) {
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addr = base + PAGE_SIZE * --cnt;
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if (last_addr && last_addr + PAGE_SIZE == addr)
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continue;
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last_addr = addr;
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len = PAGE_SIZE;
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if (len > max_seg_sz)
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len = max_seg_sz;
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if (len > sz)
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len = sz;
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if (sg)
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sg = sg_next(sg);
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else
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sg = sglist;
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if (!sg)
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return -EINVAL;
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sg_set_page(sg, virt_to_page(addr), len, 0);
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sz -= len;
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*sg_len += 1;
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}
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if (i == 0)
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i = mem->cnt;
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}
|
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|
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if (sg)
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sg_mark_end(sg);
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|
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return 0;
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}
|
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|
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/*
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* Calculate transfer rate in bytes per second.
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*/
|
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static unsigned int mmc_test_rate(uint64_t bytes, struct timespec *ts)
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{
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uint64_t ns;
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ns = ts->tv_sec;
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ns *= 1000000000;
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ns += ts->tv_nsec;
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|
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bytes *= 1000000000;
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|
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while (ns > UINT_MAX) {
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bytes >>= 1;
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ns >>= 1;
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}
|
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|
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if (!ns)
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return 0;
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|
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do_div(bytes, (uint32_t)ns);
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|
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return bytes;
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}
|
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|
|
/*
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* Save transfer results for future usage
|
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*/
|
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static void mmc_test_save_transfer_result(struct mmc_test_card *test,
|
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unsigned int count, unsigned int sectors, struct timespec ts,
|
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unsigned int rate)
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{
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struct mmc_test_transfer_result *tr;
|
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if (!test->gr)
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return;
|
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tr = kmalloc(sizeof(struct mmc_test_transfer_result), GFP_KERNEL);
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if (!tr)
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return;
|
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tr->count = count;
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tr->sectors = sectors;
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tr->ts = ts;
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tr->rate = rate;
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list_add_tail(&tr->link, &test->gr->tr_lst);
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}
|
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|
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/*
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* Print the transfer rate.
|
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*/
|
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static void mmc_test_print_rate(struct mmc_test_card *test, uint64_t bytes,
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struct timespec *ts1, struct timespec *ts2)
|
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{
|
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unsigned int rate, sectors = bytes >> 9;
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struct timespec ts;
|
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ts = timespec_sub(*ts2, *ts1);
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rate = mmc_test_rate(bytes, &ts);
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printk(KERN_INFO "%s: Transfer of %u sectors (%u%s KiB) took %lu.%09lu "
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"seconds (%u kB/s, %u KiB/s)\n",
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mmc_hostname(test->card->host), sectors, sectors >> 1,
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(sectors & 1 ? ".5" : ""), (unsigned long)ts.tv_sec,
|
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(unsigned long)ts.tv_nsec, rate / 1000, rate / 1024);
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|
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mmc_test_save_transfer_result(test, 1, sectors, ts, rate);
|
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}
|
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|
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/*
|
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* 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);
|
|
|
|
mmc_test_save_transfer_result(test, count, sectors, ts, rate);
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
/*
|
|
* 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 a basic transfer with certain parameters
|
|
*/
|
|
static int mmc_test_simple_transfer(struct mmc_test_card *test,
|
|
struct scatterlist *sg, unsigned sg_len, unsigned dev_addr,
|
|
unsigned blocks, unsigned blksz, int write)
|
|
{
|
|
struct mmc_request mrq;
|
|
struct mmc_command cmd;
|
|
struct mmc_command stop;
|
|
struct mmc_data data;
|
|
|
|
memset(&mrq, 0, sizeof(struct mmc_request));
|
|
memset(&cmd, 0, sizeof(struct mmc_command));
|
|
memset(&data, 0, sizeof(struct mmc_data));
|
|
memset(&stop, 0, sizeof(struct mmc_command));
|
|
|
|
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;
|
|
struct mmc_command cmd;
|
|
struct mmc_command stop;
|
|
struct mmc_data data;
|
|
|
|
struct scatterlist sg;
|
|
|
|
memset(&mrq, 0, sizeof(struct mmc_request));
|
|
memset(&cmd, 0, sizeof(struct mmc_command));
|
|
memset(&data, 0, sizeof(struct mmc_data));
|
|
memset(&stop, 0, sizeof(struct mmc_command));
|
|
|
|
mrq.cmd = &cmd;
|
|
mrq.data = &data;
|
|
mrq.stop = &stop;
|
|
|
|
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 < 4;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 < 4;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 < 4;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 < 4;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)
|
|
{
|
|
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 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)
|
|
{
|
|
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)",
|
|
.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,
|
|
},
|
|
|
|
};
|
|
|
|
static DEFINE_MUTEX(mmc_test_lock);
|
|
|
|
static LIST_HEAD(mmc_test_result);
|
|
|
|
static void mmc_test_run(struct mmc_test_card *test, int testcase)
|
|
{
|
|
int i, ret;
|
|
|
|
printk(KERN_INFO "%s: Starting tests of card %s...\n",
|
|
mmc_hostname(test->card->host), mmc_card_id(test->card));
|
|
|
|
mmc_claim_host(test->card->host);
|
|
|
|
for (i = 0;i < ARRAY_SIZE(mmc_test_cases);i++) {
|
|
struct mmc_test_general_result *gr;
|
|
|
|
if (testcase && ((i + 1) != testcase))
|
|
continue;
|
|
|
|
printk(KERN_INFO "%s: Test case %d. %s...\n",
|
|
mmc_hostname(test->card->host), i + 1,
|
|
mmc_test_cases[i].name);
|
|
|
|
if (mmc_test_cases[i].prepare) {
|
|
ret = mmc_test_cases[i].prepare(test);
|
|
if (ret) {
|
|
printk(KERN_INFO "%s: Result: Prepare "
|
|
"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:
|
|
printk(KERN_INFO "%s: Result: OK\n",
|
|
mmc_hostname(test->card->host));
|
|
break;
|
|
case RESULT_FAIL:
|
|
printk(KERN_INFO "%s: Result: FAILED\n",
|
|
mmc_hostname(test->card->host));
|
|
break;
|
|
case RESULT_UNSUP_HOST:
|
|
printk(KERN_INFO "%s: Result: UNSUPPORTED "
|
|
"(by host)\n",
|
|
mmc_hostname(test->card->host));
|
|
break;
|
|
case RESULT_UNSUP_CARD:
|
|
printk(KERN_INFO "%s: Result: UNSUPPORTED "
|
|
"(by card)\n",
|
|
mmc_hostname(test->card->host));
|
|
break;
|
|
default:
|
|
printk(KERN_INFO "%s: Result: ERROR (%d)\n",
|
|
mmc_hostname(test->card->host), ret);
|
|
}
|
|
|
|
/* Save the result */
|
|
if (gr)
|
|
gr->result = ret;
|
|
|
|
if (mmc_test_cases[i].cleanup) {
|
|
ret = mmc_test_cases[i].cleanup(test);
|
|
if (ret) {
|
|
printk(KERN_INFO "%s: Warning: Cleanup "
|
|
"stage failed! (%d)\n",
|
|
mmc_hostname(test->card->host),
|
|
ret);
|
|
}
|
|
}
|
|
}
|
|
|
|
mmc_release_host(test->card->host);
|
|
|
|
printk(KERN_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\n",
|
|
tr->count, tr->sectors,
|
|
(unsigned long)tr->ts.tv_sec,
|
|
(unsigned long)tr->ts.tv_nsec,
|
|
tr->rate);
|
|
}
|
|
}
|
|
|
|
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;
|
|
char lbuf[12];
|
|
long testcase;
|
|
|
|
if (count >= sizeof(lbuf))
|
|
return -EINVAL;
|
|
|
|
if (copy_from_user(lbuf, buf, count))
|
|
return -EFAULT;
|
|
lbuf[count] = '\0';
|
|
|
|
if (strict_strtol(lbuf, 10, &testcase))
|
|
return -EINVAL;
|
|
|
|
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 void mmc_test_free_file_test(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_file_test(struct mmc_card *card)
|
|
{
|
|
struct dentry *file = NULL;
|
|
struct mmc_test_dbgfs_file *df;
|
|
int ret = 0;
|
|
|
|
mutex_lock(&mmc_test_lock);
|
|
|
|
if (card->debugfs_root)
|
|
file = debugfs_create_file("test", S_IWUSR | S_IRUGO,
|
|
card->debugfs_root, card, &mmc_test_fops_test);
|
|
|
|
if (IS_ERR_OR_NULL(file)) {
|
|
dev_err(&card->dev,
|
|
"Can't create file. Perhaps debugfs is disabled.\n");
|
|
ret = -ENODEV;
|
|
goto err;
|
|
}
|
|
|
|
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");
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
df->card = card;
|
|
df->file = file;
|
|
|
|
list_add(&df->link, &mmc_test_file_test);
|
|
|
|
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_file_test(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_file_test(card);
|
|
}
|
|
|
|
static struct mmc_driver mmc_driver = {
|
|
.drv = {
|
|
.name = "mmc_test",
|
|
},
|
|
.probe = mmc_test_probe,
|
|
.remove = mmc_test_remove,
|
|
};
|
|
|
|
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_file_test(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");
|