diff options
Diffstat (limited to 'drivers/mtd/tests')
26 files changed, 7694 insertions, 0 deletions
diff --git a/drivers/mtd/tests/Makefile b/drivers/mtd/tests/Makefile new file mode 100644 index 00000000..bd0065c0 --- /dev/null +++ b/drivers/mtd/tests/Makefile @@ -0,0 +1,9 @@ +obj-$(CONFIG_MTD_TESTS) += mtd_oobtest.o +obj-$(CONFIG_MTD_TESTS) += mtd_pagetest.o +obj-$(CONFIG_MTD_TESTS) += mtd_readtest.o +obj-$(CONFIG_MTD_TESTS) += mtd_speedtest.o +obj-$(CONFIG_MTD_TESTS) += mtd_stresstest.o +obj-$(CONFIG_MTD_TESTS) += mtd_subpagetest.o +obj-$(CONFIG_MTD_TESTS) += mtd_torturetest.o +obj-$(CONFIG_MTD_TESTS) += mtd_nandecctest.o +obj-$(CONFIG_MTD_TESTS) += mtd_nandbiterrs.o diff --git a/drivers/mtd/tests/mtd_nandbiterrs.c b/drivers/mtd/tests/mtd_nandbiterrs.c new file mode 100644 index 00000000..207bf9a9 --- /dev/null +++ b/drivers/mtd/tests/mtd_nandbiterrs.c @@ -0,0 +1,461 @@ +/* + * Copyright 漏 2012 NetCommWireless + * Iwo Mergler <Iwo.Mergler@netcommwireless.com.au> + * + * Test for multi-bit error recovery on a NAND page This mostly tests the + * ECC controller / driver. + * + * There are two test modes: + * + * 0 - artificially inserting bit errors until the ECC fails + * This is the default method and fairly quick. It should + * be independent of the quality of the FLASH. + * + * 1 - re-writing the same pattern repeatedly until the ECC fails. + * This method relies on the physics of NAND FLASH to eventually + * generate '0' bits if '1' has been written sufficient times. + * Depending on the NAND, the first bit errors will appear after + * 1000 or more writes and then will usually snowball, reaching the + * limits of the ECC quickly. + * + * The test stops after 10000 cycles, should your FLASH be + * exceptionally good and not generate bit errors before that. Try + * a different page in that case. + * + * Please note that neither of these tests will significantly 'use up' any + * FLASH endurance. Only a maximum of two erase operations will be performed. + * + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; see the file COPYING. If not, write to the Free Software + * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/mtd/mtd.h> +#include <linux/err.h> +#include <linux/mtd/nand.h> +#include <linux/slab.h> + +static int dev; +module_param(dev, int, S_IRUGO); +MODULE_PARM_DESC(dev, "MTD device number to use"); + +static unsigned page_offset; +module_param(page_offset, uint, S_IRUGO); +MODULE_PARM_DESC(page_offset, "Page number relative to dev start"); + +static unsigned seed; +module_param(seed, uint, S_IRUGO); +MODULE_PARM_DESC(seed, "Random seed"); + +static int mode; +module_param(mode, int, S_IRUGO); +MODULE_PARM_DESC(mode, "0=incremental errors, 1=overwrite test"); + +static unsigned max_overwrite = 10000; + +static loff_t offset; /* Offset of the page we're using. */ +static unsigned eraseblock; /* Eraseblock number for our page. */ + +/* We assume that the ECC can correct up to a certain number + * of biterrors per subpage. */ +static unsigned subsize; /* Size of subpages */ +static unsigned subcount; /* Number of subpages per page */ + +static struct mtd_info *mtd; /* MTD device */ + +static uint8_t *wbuffer; /* One page write / compare buffer */ +static uint8_t *rbuffer; /* One page read buffer */ + +/* 'random' bytes from known offsets */ +static uint8_t hash(unsigned offset) +{ + unsigned v = offset; + unsigned char c; + v ^= 0x7f7edfd3; + v = v ^ (v >> 3); + v = v ^ (v >> 5); + v = v ^ (v >> 13); + c = v & 0xFF; + /* Reverse bits of result. */ + c = (c & 0x0F) << 4 | (c & 0xF0) >> 4; + c = (c & 0x33) << 2 | (c & 0xCC) >> 2; + c = (c & 0x55) << 1 | (c & 0xAA) >> 1; + return c; +} + +static int erase_block(void) +{ + int err; + struct erase_info ei; + loff_t addr = eraseblock * mtd->erasesize; + + pr_info("erase_block\n"); + + memset(&ei, 0, sizeof(struct erase_info)); + ei.mtd = mtd; + ei.addr = addr; + ei.len = mtd->erasesize; + + err = mtd_erase(mtd, &ei); + if (err || ei.state == MTD_ERASE_FAILED) { + pr_err("error %d while erasing\n", err); + if (!err) + err = -EIO; + return err; + } + + return 0; +} + +/* Writes wbuffer to page */ +static int write_page(int log) +{ + int err = 0; + size_t written; + + if (log) + pr_info("write_page\n"); + + err = mtd_write(mtd, offset, mtd->writesize, &written, wbuffer); + if (err || written != mtd->writesize) { + pr_err("error: write failed at %#llx\n", (long long)offset); + if (!err) + err = -EIO; + } + + return err; +} + +/* Re-writes the data area while leaving the OOB alone. */ +static int rewrite_page(int log) +{ + int err = 0; + struct mtd_oob_ops ops; + + if (log) + pr_info("rewrite page\n"); + + ops.mode = MTD_OPS_RAW; /* No ECC */ + ops.len = mtd->writesize; + ops.retlen = 0; + ops.ooblen = 0; + ops.oobretlen = 0; + ops.ooboffs = 0; + ops.datbuf = wbuffer; + ops.oobbuf = NULL; + + err = mtd_write_oob(mtd, offset, &ops); + if (err || ops.retlen != mtd->writesize) { + pr_err("error: write_oob failed (%d)\n", err); + if (!err) + err = -EIO; + } + + return err; +} + +/* Reads page into rbuffer. Returns number of corrected bit errors (>=0) + * or error (<0) */ +static int read_page(int log) +{ + int err = 0; + size_t read; + struct mtd_ecc_stats oldstats; + + if (log) + pr_info("read_page\n"); + + /* Saving last mtd stats */ + memcpy(&oldstats, &mtd->ecc_stats, sizeof(oldstats)); + + err = mtd_read(mtd, offset, mtd->writesize, &read, rbuffer); + if (err == -EUCLEAN) + err = mtd->ecc_stats.corrected - oldstats.corrected; + + if (err < 0 || read != mtd->writesize) { + pr_err("error: read failed at %#llx\n", (long long)offset); + if (err >= 0) + err = -EIO; + } + + return err; +} + +/* Verifies rbuffer against random sequence */ +static int verify_page(int log) +{ + unsigned i, errs = 0; + + if (log) + pr_info("verify_page\n"); + + for (i = 0; i < mtd->writesize; i++) { + if (rbuffer[i] != hash(i+seed)) { + pr_err("Error: page offset %u, expected %02x, got %02x\n", + i, hash(i+seed), rbuffer[i]); + errs++; + } + } + + if (errs) + return -EIO; + else + return 0; +} + +#define CBIT(v, n) ((v) & (1 << (n))) +#define BCLR(v, n) ((v) = (v) & ~(1 << (n))) + +/* Finds the first '1' bit in wbuffer starting at offset 'byte' + * and sets it to '0'. */ +static int insert_biterror(unsigned byte) +{ + int bit; + + while (byte < mtd->writesize) { + for (bit = 7; bit >= 0; bit--) { + if (CBIT(wbuffer[byte], bit)) { + BCLR(wbuffer[byte], bit); + pr_info("Inserted biterror @ %u/%u\n", byte, bit); + return 0; + } + } + byte++; + } + pr_err("biterror: Failed to find a '1' bit\n"); + return -EIO; +} + +/* Writes 'random' data to page and then introduces deliberate bit + * errors into the page, while verifying each step. */ +static int incremental_errors_test(void) +{ + int err = 0; + unsigned i; + unsigned errs_per_subpage = 0; + + pr_info("incremental biterrors test\n"); + + for (i = 0; i < mtd->writesize; i++) + wbuffer[i] = hash(i+seed); + + err = write_page(1); + if (err) + goto exit; + + while (1) { + + err = rewrite_page(1); + if (err) + goto exit; + + err = read_page(1); + if (err > 0) + pr_info("Read reported %d corrected bit errors\n", err); + if (err < 0) { + pr_err("After %d biterrors per subpage, read reported error %d\n", + errs_per_subpage, err); + err = 0; + goto exit; + } + + err = verify_page(1); + if (err) { + pr_err("ECC failure, read data is incorrect despite read success\n"); + goto exit; + } + + pr_info("Successfully corrected %d bit errors per subpage\n", + errs_per_subpage); + + for (i = 0; i < subcount; i++) { + err = insert_biterror(i * subsize); + if (err < 0) + goto exit; + } + errs_per_subpage++; + } + +exit: + return err; +} + + +/* Writes 'random' data to page and then re-writes that same data repeatedly. + This eventually develops bit errors (bits written as '1' will slowly become + '0'), which are corrected as far as the ECC is capable of. */ +static int overwrite_test(void) +{ + int err = 0; + unsigned i; + unsigned max_corrected = 0; + unsigned opno = 0; + /* We don't expect more than this many correctable bit errors per + * page. */ + #define MAXBITS 512 + static unsigned bitstats[MAXBITS]; /* bit error histogram. */ + + memset(bitstats, 0, sizeof(bitstats)); + + pr_info("overwrite biterrors test\n"); + + for (i = 0; i < mtd->writesize; i++) + wbuffer[i] = hash(i+seed); + + err = write_page(1); + if (err) + goto exit; + + while (opno < max_overwrite) { + + err = rewrite_page(0); + if (err) + break; + + err = read_page(0); + if (err >= 0) { + if (err >= MAXBITS) { + pr_info("Implausible number of bit errors corrected\n"); + err = -EIO; + break; + } + bitstats[err]++; + if (err > max_corrected) { + max_corrected = err; + pr_info("Read reported %d corrected bit errors\n", + err); + } + } else { /* err < 0 */ + pr_info("Read reported error %d\n", err); + err = 0; + break; + } + + err = verify_page(0); + if (err) { + bitstats[max_corrected] = opno; + pr_info("ECC failure, read data is incorrect despite read success\n"); + break; + } + + opno++; + } + + /* At this point bitstats[0] contains the number of ops with no bit + * errors, bitstats[1] the number of ops with 1 bit error, etc. */ + pr_info("Bit error histogram (%d operations total):\n", opno); + for (i = 0; i < max_corrected; i++) + pr_info("Page reads with %3d corrected bit errors: %d\n", + i, bitstats[i]); + +exit: + return err; +} + +static int __init mtd_nandbiterrs_init(void) +{ + int err = 0; + + printk("\n"); + printk(KERN_INFO "==================================================\n"); + pr_info("MTD device: %d\n", dev); + + mtd = get_mtd_device(NULL, dev); + if (IS_ERR(mtd)) { + err = PTR_ERR(mtd); + pr_err("error: cannot get MTD device\n"); + goto exit_mtddev; + } + + if (mtd->type != MTD_NANDFLASH) { + pr_info("this test requires NAND flash\n"); + err = -ENODEV; + goto exit_nand; + } + + pr_info("MTD device size %llu, eraseblock=%u, page=%u, oob=%u\n", + (unsigned long long)mtd->size, mtd->erasesize, + mtd->writesize, mtd->oobsize); + + subsize = mtd->writesize >> mtd->subpage_sft; + subcount = mtd->writesize / subsize; + + pr_info("Device uses %d subpages of %d bytes\n", subcount, subsize); + + offset = page_offset * mtd->writesize; + eraseblock = mtd_div_by_eb(offset, mtd); + + pr_info("Using page=%u, offset=%llu, eraseblock=%u\n", + page_offset, offset, eraseblock); + + wbuffer = kmalloc(mtd->writesize, GFP_KERNEL); + if (!wbuffer) { + err = -ENOMEM; + goto exit_wbuffer; + } + + rbuffer = kmalloc(mtd->writesize, GFP_KERNEL); + if (!rbuffer) { + err = -ENOMEM; + goto exit_rbuffer; + } + + err = erase_block(); + if (err) + goto exit_error; + + if (mode == 0) + err = incremental_errors_test(); + else + err = overwrite_test(); + + if (err) + goto exit_error; + + /* We leave the block un-erased in case of test failure. */ + err = erase_block(); + if (err) + goto exit_error; + + err = -EIO; + pr_info("finished successfully.\n"); + printk(KERN_INFO "==================================================\n"); + +exit_error: + kfree(rbuffer); +exit_rbuffer: + kfree(wbuffer); +exit_wbuffer: + /* Nothing */ +exit_nand: + put_mtd_device(mtd); +exit_mtddev: + return err; +} + +static void __exit mtd_nandbiterrs_exit(void) +{ + return; +} + +module_init(mtd_nandbiterrs_init); +module_exit(mtd_nandbiterrs_exit); + +MODULE_DESCRIPTION("NAND bit error recovery test"); +MODULE_AUTHOR("Iwo Mergler"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c new file mode 100644 index 00000000..70106607 --- /dev/null +++ b/drivers/mtd/tests/mtd_nandecctest.c @@ -0,0 +1,316 @@ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/list.h> +#include <linux/random.h> +#include <linux/string.h> +#include <linux/bitops.h> +#include <linux/slab.h> +#include <linux/mtd/nand_ecc.h> + +/* + * Test the implementation for software ECC + * + * No actual MTD device is needed, So we don't need to warry about losing + * important data by human error. + * + * This covers possible patterns of corruption which can be reliably corrected + * or detected. + */ + +#if defined(CONFIG_MTD_NAND) || defined(CONFIG_MTD_NAND_MODULE) + +struct nand_ecc_test { + const char *name; + void (*prepare)(void *, void *, void *, void *, const size_t); + int (*verify)(void *, void *, void *, const size_t); +}; + +/* + * The reason for this __change_bit_le() instead of __change_bit() is to inject + * bit error properly within the region which is not a multiple of + * sizeof(unsigned long) on big-endian systems + */ +#ifdef __LITTLE_ENDIAN +#define __change_bit_le(nr, addr) __change_bit(nr, addr) +#elif defined(__BIG_ENDIAN) +#define __change_bit_le(nr, addr) \ + __change_bit((nr) ^ ((BITS_PER_LONG - 1) & ~0x7), addr) +#else +#error "Unknown byte order" +#endif + +static void single_bit_error_data(void *error_data, void *correct_data, + size_t size) +{ + unsigned int offset = prandom_u32() % (size * BITS_PER_BYTE); + + memcpy(error_data, correct_data, size); + __change_bit_le(offset, error_data); +} + +static void double_bit_error_data(void *error_data, void *correct_data, + size_t size) +{ + unsigned int offset[2]; + + offset[0] = prandom_u32() % (size * BITS_PER_BYTE); + do { + offset[1] = prandom_u32() % (size * BITS_PER_BYTE); + } while (offset[0] == offset[1]); + + memcpy(error_data, correct_data, size); + + __change_bit_le(offset[0], error_data); + __change_bit_le(offset[1], error_data); +} + +static unsigned int random_ecc_bit(size_t size) +{ + unsigned int offset = prandom_u32() % (3 * BITS_PER_BYTE); + + if (size == 256) { + /* + * Don't inject a bit error into the insignificant bits (16th + * and 17th bit) in ECC code for 256 byte data block + */ + while (offset == 16 || offset == 17) + offset = prandom_u32() % (3 * BITS_PER_BYTE); + } + + return offset; +} + +static void single_bit_error_ecc(void *error_ecc, void *correct_ecc, + size_t size) +{ + unsigned int offset = random_ecc_bit(size); + + memcpy(error_ecc, correct_ecc, 3); + __change_bit_le(offset, error_ecc); +} + +static void double_bit_error_ecc(void *error_ecc, void *correct_ecc, + size_t size) +{ + unsigned int offset[2]; + + offset[0] = random_ecc_bit(size); + do { + offset[1] = random_ecc_bit(size); + } while (offset[0] == offset[1]); + + memcpy(error_ecc, correct_ecc, 3); + __change_bit_le(offset[0], error_ecc); + __change_bit_le(offset[1], error_ecc); +} + +static void no_bit_error(void *error_data, void *error_ecc, + void *correct_data, void *correct_ecc, const size_t size) +{ + memcpy(error_data, correct_data, size); + memcpy(error_ecc, correct_ecc, 3); +} + +static int no_bit_error_verify(void *error_data, void *error_ecc, + void *correct_data, const size_t size) +{ + unsigned char calc_ecc[3]; + int ret; + + __nand_calculate_ecc(error_data, size, calc_ecc); + ret = __nand_correct_data(error_data, error_ecc, calc_ecc, size); + if (ret == 0 && !memcmp(correct_data, error_data, size)) + return 0; + + return -EINVAL; +} + +static void single_bit_error_in_data(void *error_data, void *error_ecc, + void *correct_data, void *correct_ecc, const size_t size) +{ + single_bit_error_data(error_data, correct_data, size); + memcpy(error_ecc, correct_ecc, 3); +} + +static void single_bit_error_in_ecc(void *error_data, void *error_ecc, + void *correct_data, void *correct_ecc, const size_t size) +{ + memcpy(error_data, correct_data, size); + single_bit_error_ecc(error_ecc, correct_ecc, size); +} + +static int single_bit_error_correct(void *error_data, void *error_ecc, + void *correct_data, const size_t size) +{ + unsigned char calc_ecc[3]; + int ret; + + __nand_calculate_ecc(error_data, size, calc_ecc); + ret = __nand_correct_data(error_data, error_ecc, calc_ecc, size); + if (ret == 1 && !memcmp(correct_data, error_data, size)) + return 0; + + return -EINVAL; +} + +static void double_bit_error_in_data(void *error_data, void *error_ecc, + void *correct_data, void *correct_ecc, const size_t size) +{ + double_bit_error_data(error_data, correct_data, size); + memcpy(error_ecc, correct_ecc, 3); +} + +static void single_bit_error_in_data_and_ecc(void *error_data, void *error_ecc, + void *correct_data, void *correct_ecc, const size_t size) +{ + single_bit_error_data(error_data, correct_data, size); + single_bit_error_ecc(error_ecc, correct_ecc, size); +} + +static void double_bit_error_in_ecc(void *error_data, void *error_ecc, + void *correct_data, void *correct_ecc, const size_t size) +{ + memcpy(error_data, correct_data, size); + double_bit_error_ecc(error_ecc, correct_ecc, size); +} + +static int double_bit_error_detect(void *error_data, void *error_ecc, + void *correct_data, const size_t size) +{ + unsigned char calc_ecc[3]; + int ret; + + __nand_calculate_ecc(error_data, size, calc_ecc); + ret = __nand_correct_data(error_data, error_ecc, calc_ecc, size); + + return (ret == -1) ? 0 : -EINVAL; +} + +static const struct nand_ecc_test nand_ecc_test[] = { + { + .name = "no-bit-error", + .prepare = no_bit_error, + .verify = no_bit_error_verify, + }, + { + .name = "single-bit-error-in-data-correct", + .prepare = single_bit_error_in_data, + .verify = single_bit_error_correct, + }, + { + .name = "single-bit-error-in-ecc-correct", + .prepare = single_bit_error_in_ecc, + .verify = single_bit_error_correct, + }, + { + .name = "double-bit-error-in-data-detect", + .prepare = double_bit_error_in_data, + .verify = double_bit_error_detect, + }, + { + .name = "single-bit-error-in-data-and-ecc-detect", + .prepare = single_bit_error_in_data_and_ecc, + .verify = double_bit_error_detect, + }, + { + .name = "double-bit-error-in-ecc-detect", + .prepare = double_bit_error_in_ecc, + .verify = double_bit_error_detect, + }, +}; + +static void dump_data_ecc(void *error_data, void *error_ecc, void *correct_data, + void *correct_ecc, const size_t size) +{ + pr_info("hexdump of error data:\n"); + print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 4, + error_data, size, false); + print_hex_dump(KERN_INFO, "hexdump of error ecc: ", + DUMP_PREFIX_NONE, 16, 1, error_ecc, 3, false); + + pr_info("hexdump of correct data:\n"); + print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 4, + correct_data, size, false); + print_hex_dump(KERN_INFO, "hexdump of correct ecc: ", + DUMP_PREFIX_NONE, 16, 1, correct_ecc, 3, false); +} + +static int nand_ecc_test_run(const size_t size) +{ + int i; + int err = 0; + void *error_data; + void *error_ecc; + void *correct_data; + void *correct_ecc; + + error_data = kmalloc(size, GFP_KERNEL); + error_ecc = kmalloc(3, GFP_KERNEL); + correct_data = kmalloc(size, GFP_KERNEL); + correct_ecc = kmalloc(3, GFP_KERNEL); + + if (!error_data || !error_ecc || !correct_data || !correct_ecc) { + err = -ENOMEM; + goto error; + } + + prandom_bytes(correct_data, size); + __nand_calculate_ecc(correct_data, size, correct_ecc); + + for (i = 0; i < ARRAY_SIZE(nand_ecc_test); i++) { + nand_ecc_test[i].prepare(error_data, error_ecc, + correct_data, correct_ecc, size); + err = nand_ecc_test[i].verify(error_data, error_ecc, + correct_data, size); + + if (err) { + pr_err("not ok - %s-%zd\n", + nand_ecc_test[i].name, size); + dump_data_ecc(error_data, error_ecc, + correct_data, correct_ecc, size); + break; + } + pr_info("ok - %s-%zd\n", + nand_ecc_test[i].name, size); + } +error: + kfree(error_data); + kfree(error_ecc); + kfree(correct_data); + kfree(correct_ecc); + + return err; +} + +#else + +static int nand_ecc_test_run(const size_t size) +{ + return 0; +} + +#endif + +static int __init ecc_test_init(void) +{ + int err; + + err = nand_ecc_test_run(256); + if (err) + return err; + + return nand_ecc_test_run(512); +} + +static void __exit ecc_test_exit(void) +{ +} + +module_init(ecc_test_init); +module_exit(ecc_test_exit); + +MODULE_DESCRIPTION("NAND ECC function test module"); +MODULE_AUTHOR("Akinobu Mita"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/tests/mtd_oobtest.c b/drivers/mtd/tests/mtd_oobtest.c new file mode 100644 index 00000000..3e24b379 --- /dev/null +++ b/drivers/mtd/tests/mtd_oobtest.c @@ -0,0 +1,720 @@ +/* + * Copyright (C) 2006-2008 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; see the file COPYING. If not, write to the Free Software + * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * Test OOB read and write on MTD device. + * + * Author: Adrian Hunter <ext-adrian.hunter@nokia.com> + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <asm/div64.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/err.h> +#include <linux/mtd/mtd.h> +#include <linux/slab.h> +#include <linux/sched.h> +#include <linux/random.h> + +static int dev = -EINVAL; +module_param(dev, int, S_IRUGO); +MODULE_PARM_DESC(dev, "MTD device number to use"); + +static struct mtd_info *mtd; +static unsigned char *readbuf; +static unsigned char *writebuf; +static unsigned char *bbt; + +static int ebcnt; +static int pgcnt; +static int errcnt; +static int use_offset; +static int use_len; +static int use_len_max; +static int vary_offset; +static struct rnd_state rnd_state; + +static int erase_eraseblock(int ebnum) +{ + int err; + struct erase_info ei; + loff_t addr = ebnum * mtd->erasesize; + + memset(&ei, 0, sizeof(struct erase_info)); + ei.mtd = mtd; + ei.addr = addr; + ei.len = mtd->erasesize; + + err = mtd_erase(mtd, &ei); + if (err) { + pr_err("error %d while erasing EB %d\n", err, ebnum); + return err; + } + + if (ei.state == MTD_ERASE_FAILED) { + pr_err("some erase error occurred at EB %d\n", ebnum); + return -EIO; + } + + return 0; +} + +static int erase_whole_device(void) +{ + int err; + unsigned int i; + + pr_info("erasing whole device\n"); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = erase_eraseblock(i); + if (err) + return err; + cond_resched(); + } + pr_info("erased %u eraseblocks\n", i); + return 0; +} + +static void do_vary_offset(void) +{ + use_len -= 1; + if (use_len < 1) { + use_offset += 1; + if (use_offset >= use_len_max) + use_offset = 0; + use_len = use_len_max - use_offset; + } +} + +static int write_eraseblock(int ebnum) +{ + int i; + struct mtd_oob_ops ops; + int err = 0; + loff_t addr = ebnum * mtd->erasesize; + + for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) { + prandom_bytes_state(&rnd_state, writebuf, use_len); + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = 0; + ops.retlen = 0; + ops.ooblen = use_len; + ops.oobretlen = 0; + ops.ooboffs = use_offset; + ops.datbuf = NULL; + ops.oobbuf = writebuf; + err = mtd_write_oob(mtd, addr, &ops); + if (err || ops.oobretlen != use_len) { + pr_err("error: writeoob failed at %#llx\n", + (long long)addr); + pr_err("error: use_len %d, use_offset %d\n", + use_len, use_offset); + errcnt += 1; + return err ? err : -1; + } + if (vary_offset) + do_vary_offset(); + } + + return err; +} + +static int write_whole_device(void) +{ + int err; + unsigned int i; + + pr_info("writing OOBs of whole device\n"); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = write_eraseblock(i); + if (err) + return err; + if (i % 256 == 0) + pr_info("written up to eraseblock %u\n", i); + cond_resched(); + } + pr_info("written %u eraseblocks\n", i); + return 0; +} + +static int verify_eraseblock(int ebnum) +{ + int i; + struct mtd_oob_ops ops; + int err = 0; + loff_t addr = ebnum * mtd->erasesize; + + for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) { + prandom_bytes_state(&rnd_state, writebuf, use_len); + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = 0; + ops.retlen = 0; + ops.ooblen = use_len; + ops.oobretlen = 0; + ops.ooboffs = use_offset; + ops.datbuf = NULL; + ops.oobbuf = readbuf; + err = mtd_read_oob(mtd, addr, &ops); + if (err || ops.oobretlen != use_len) { + pr_err("error: readoob failed at %#llx\n", + (long long)addr); + errcnt += 1; + return err ? err : -1; + } + if (memcmp(readbuf, writebuf, use_len)) { + pr_err("error: verify failed at %#llx\n", + (long long)addr); + errcnt += 1; + if (errcnt > 1000) { + pr_err("error: too many errors\n"); + return -1; + } + } + if (use_offset != 0 || use_len < mtd->ecclayout->oobavail) { + int k; + + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = 0; + ops.retlen = 0; + ops.ooblen = mtd->ecclayout->oobavail; + ops.oobretlen = 0; + ops.ooboffs = 0; + ops.datbuf = NULL; + ops.oobbuf = readbuf; + err = mtd_read_oob(mtd, addr, &ops); + if (err || ops.oobretlen != mtd->ecclayout->oobavail) { + pr_err("error: readoob failed at %#llx\n", + (long long)addr); + errcnt += 1; + return err ? err : -1; + } + if (memcmp(readbuf + use_offset, writebuf, use_len)) { + pr_err("error: verify failed at %#llx\n", + (long long)addr); + errcnt += 1; + if (errcnt > 1000) { + pr_err("error: too many errors\n"); + return -1; + } + } + for (k = 0; k < use_offset; ++k) + if (readbuf[k] != 0xff) { + pr_err("error: verify 0xff " + "failed at %#llx\n", + (long long)addr); + errcnt += 1; + if (errcnt > 1000) { + pr_err("error: too " + "many errors\n"); + return -1; + } + } + for (k = use_offset + use_len; + k < mtd->ecclayout->oobavail; ++k) + if (readbuf[k] != 0xff) { + pr_err("error: verify 0xff " + "failed at %#llx\n", + (long long)addr); + errcnt += 1; + if (errcnt > 1000) { + pr_err("error: too " + "many errors\n"); + return -1; + } + } + } + if (vary_offset) + do_vary_offset(); + } + return err; +} + +static int verify_eraseblock_in_one_go(int ebnum) +{ + struct mtd_oob_ops ops; + int err = 0; + loff_t addr = ebnum * mtd->erasesize; + size_t len = mtd->ecclayout->oobavail * pgcnt; + + prandom_bytes_state(&rnd_state, writebuf, len); + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = 0; + ops.retlen = 0; + ops.ooblen = len; + ops.oobretlen = 0; + ops.ooboffs = 0; + ops.datbuf = NULL; + ops.oobbuf = readbuf; + err = mtd_read_oob(mtd, addr, &ops); + if (err || ops.oobretlen != len) { + pr_err("error: readoob failed at %#llx\n", + (long long)addr); + errcnt += 1; + return err ? err : -1; + } + if (memcmp(readbuf, writebuf, len)) { + pr_err("error: verify failed at %#llx\n", + (long long)addr); + errcnt += 1; + if (errcnt > 1000) { + pr_err("error: too many errors\n"); + return -1; + } + } + + return err; +} + +static int verify_all_eraseblocks(void) +{ + int err; + unsigned int i; + + pr_info("verifying all eraseblocks\n"); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = verify_eraseblock(i); + if (err) + return err; + if (i % 256 == 0) + pr_info("verified up to eraseblock %u\n", i); + cond_resched(); + } + pr_info("verified %u eraseblocks\n", i); + return 0; +} + +static int is_block_bad(int ebnum) +{ + int ret; + loff_t addr = ebnum * mtd->erasesize; + + ret = mtd_block_isbad(mtd, addr); + if (ret) + pr_info("block %d is bad\n", ebnum); + return ret; +} + +static int scan_for_bad_eraseblocks(void) +{ + int i, bad = 0; + + bbt = kmalloc(ebcnt, GFP_KERNEL); + if (!bbt) { + pr_err("error: cannot allocate memory\n"); + return -ENOMEM; + } + + pr_info("scanning for bad eraseblocks\n"); + for (i = 0; i < ebcnt; ++i) { + bbt[i] = is_block_bad(i) ? 1 : 0; + if (bbt[i]) + bad += 1; + cond_resched(); + } + pr_info("scanned %d eraseblocks, %d are bad\n", i, bad); + return 0; +} + +static int __init mtd_oobtest_init(void) +{ + int err = 0; + unsigned int i; + uint64_t tmp; + struct mtd_oob_ops ops; + loff_t addr = 0, addr0; + + printk(KERN_INFO "\n"); + printk(KERN_INFO "=================================================\n"); + + if (dev < 0) { + pr_info("Please specify a valid mtd-device via module parameter\n"); + pr_crit("CAREFUL: This test wipes all data on the specified MTD device!\n"); + return -EINVAL; + } + + pr_info("MTD device: %d\n", dev); + + mtd = get_mtd_device(NULL, dev); + if (IS_ERR(mtd)) { + err = PTR_ERR(mtd); + pr_err("error: cannot get MTD device\n"); + return err; + } + + if (mtd->type != MTD_NANDFLASH) { + pr_info("this test requires NAND flash\n"); + goto out; + } + + tmp = mtd->size; + do_div(tmp, mtd->erasesize); + ebcnt = tmp; + pgcnt = mtd->erasesize / mtd->writesize; + + pr_info("MTD device size %llu, eraseblock size %u, " + "page size %u, count of eraseblocks %u, pages per " + "eraseblock %u, OOB size %u\n", + (unsigned long long)mtd->size, mtd->erasesize, + mtd->writesize, ebcnt, pgcnt, mtd->oobsize); + + err = -ENOMEM; + readbuf = kmalloc(mtd->erasesize, GFP_KERNEL); + if (!readbuf) { + pr_err("error: cannot allocate memory\n"); + goto out; + } + writebuf = kmalloc(mtd->erasesize, GFP_KERNEL); + if (!writebuf) { + pr_err("error: cannot allocate memory\n"); + goto out; + } + + err = scan_for_bad_eraseblocks(); + if (err) + goto out; + + use_offset = 0; + use_len = mtd->ecclayout->oobavail; + use_len_max = mtd->ecclayout->oobavail; + vary_offset = 0; + + /* First test: write all OOB, read it back and verify */ + pr_info("test 1 of 5\n"); + + err = erase_whole_device(); + if (err) + goto out; + + prandom_seed_state(&rnd_state, 1); + err = write_whole_device(); + if (err) + goto out; + + prandom_seed_state(&rnd_state, 1); + err = verify_all_eraseblocks(); + if (err) + goto out; + + /* + * Second test: write all OOB, a block at a time, read it back and + * verify. + */ + pr_info("test 2 of 5\n"); + + err = erase_whole_device(); + if (err) + goto out; + + prandom_seed_state(&rnd_state, 3); + err = write_whole_device(); + if (err) + goto out; + + /* Check all eraseblocks */ + prandom_seed_state(&rnd_state, 3); + pr_info("verifying all eraseblocks\n"); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = verify_eraseblock_in_one_go(i); + if (err) + goto out; + if (i % 256 == 0) + pr_info("verified up to eraseblock %u\n", i); + cond_resched(); + } + pr_info("verified %u eraseblocks\n", i); + + /* + * Third test: write OOB at varying offsets and lengths, read it back + * and verify. + */ + pr_info("test 3 of 5\n"); + + err = erase_whole_device(); + if (err) + goto out; + + /* Write all eraseblocks */ + use_offset = 0; + use_len = mtd->ecclayout->oobavail; + use_len_max = mtd->ecclayout->oobavail; + vary_offset = 1; + prandom_seed_state(&rnd_state, 5); + + err = write_whole_device(); + if (err) + goto out; + + /* Check all eraseblocks */ + use_offset = 0; + use_len = mtd->ecclayout->oobavail; + use_len_max = mtd->ecclayout->oobavail; + vary_offset = 1; + prandom_seed_state(&rnd_state, 5); + err = verify_all_eraseblocks(); + if (err) + goto out; + + use_offset = 0; + use_len = mtd->ecclayout->oobavail; + use_len_max = mtd->ecclayout->oobavail; + vary_offset = 0; + + /* Fourth test: try to write off end of device */ + pr_info("test 4 of 5\n"); + + err = erase_whole_device(); + if (err) + goto out; + + addr0 = 0; + for (i = 0; i < ebcnt && bbt[i]; ++i) + addr0 += mtd->erasesize; + + /* Attempt to write off end of OOB */ + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = 0; + ops.retlen = 0; + ops.ooblen = 1; + ops.oobretlen = 0; + ops.ooboffs = mtd->ecclayout->oobavail; + ops.datbuf = NULL; + ops.oobbuf = writebuf; + pr_info("attempting to start write past end of OOB\n"); + pr_info("an error is expected...\n"); + err = mtd_write_oob(mtd, addr0, &ops); + if (err) { + pr_info("error occurred as expected\n"); + err = 0; + } else { + pr_err("error: can write past end of OOB\n"); + errcnt += 1; + } + + /* Attempt to read off end of OOB */ + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = 0; + ops.retlen = 0; + ops.ooblen = 1; + ops.oobretlen = 0; + ops.ooboffs = mtd->ecclayout->oobavail; + ops.datbuf = NULL; + ops.oobbuf = readbuf; + pr_info("attempting to start read past end of OOB\n"); + pr_info("an error is expected...\n"); + err = mtd_read_oob(mtd, addr0, &ops); + if (err) { + pr_info("error occurred as expected\n"); + err = 0; + } else { + pr_err("error: can read past end of OOB\n"); + errcnt += 1; + } + + if (bbt[ebcnt - 1]) + pr_info("skipping end of device tests because last " + "block is bad\n"); + else { + /* Attempt to write off end of device */ + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = 0; + ops.retlen = 0; + ops.ooblen = mtd->ecclayout->oobavail + 1; + ops.oobretlen = 0; + ops.ooboffs = 0; + ops.datbuf = NULL; + ops.oobbuf = writebuf; + pr_info("attempting to write past end of device\n"); + pr_info("an error is expected...\n"); + err = mtd_write_oob(mtd, mtd->size - mtd->writesize, &ops); + if (err) { + pr_info("error occurred as expected\n"); + err = 0; + } else { + pr_err("error: wrote past end of device\n"); + errcnt += 1; + } + + /* Attempt to read off end of device */ + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = 0; + ops.retlen = 0; + ops.ooblen = mtd->ecclayout->oobavail + 1; + ops.oobretlen = 0; + ops.ooboffs = 0; + ops.datbuf = NULL; + ops.oobbuf = readbuf; + pr_info("attempting to read past end of device\n"); + pr_info("an error is expected...\n"); + err = mtd_read_oob(mtd, mtd->size - mtd->writesize, &ops); + if (err) { + pr_info("error occurred as expected\n"); + err = 0; + } else { + pr_err("error: read past end of device\n"); + errcnt += 1; + } + + err = erase_eraseblock(ebcnt - 1); + if (err) + goto out; + + /* Attempt to write off end of device */ + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = 0; + ops.retlen = 0; + ops.ooblen = mtd->ecclayout->oobavail; + ops.oobretlen = 0; + ops.ooboffs = 1; + ops.datbuf = NULL; + ops.oobbuf = writebuf; + pr_info("attempting to write past end of device\n"); + pr_info("an error is expected...\n"); + err = mtd_write_oob(mtd, mtd->size - mtd->writesize, &ops); + if (err) { + pr_info("error occurred as expected\n"); + err = 0; + } else { + pr_err("error: wrote past end of device\n"); + errcnt += 1; + } + + /* Attempt to read off end of device */ + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = 0; + ops.retlen = 0; + ops.ooblen = mtd->ecclayout->oobavail; + ops.oobretlen = 0; + ops.ooboffs = 1; + ops.datbuf = NULL; + ops.oobbuf = readbuf; + pr_info("attempting to read past end of device\n"); + pr_info("an error is expected...\n"); + err = mtd_read_oob(mtd, mtd->size - mtd->writesize, &ops); + if (err) { + pr_info("error occurred as expected\n"); + err = 0; + } else { + pr_err("error: read past end of device\n"); + errcnt += 1; + } + } + + /* Fifth test: write / read across block boundaries */ + pr_info("test 5 of 5\n"); + + /* Erase all eraseblocks */ + err = erase_whole_device(); + if (err) + goto out; + + /* Write all eraseblocks */ + prandom_seed_state(&rnd_state, 11); + pr_info("writing OOBs of whole device\n"); + for (i = 0; i < ebcnt - 1; ++i) { + int cnt = 2; + int pg; + size_t sz = mtd->ecclayout->oobavail; + if (bbt[i] || bbt[i + 1]) + continue; + addr = (i + 1) * mtd->erasesize - mtd->writesize; + for (pg = 0; pg < cnt; ++pg) { + prandom_bytes_state(&rnd_state, writebuf, sz); + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = 0; + ops.retlen = 0; + ops.ooblen = sz; + ops.oobretlen = 0; + ops.ooboffs = 0; + ops.datbuf = NULL; + ops.oobbuf = writebuf; + err = mtd_write_oob(mtd, addr, &ops); + if (err) + goto out; + if (i % 256 == 0) + pr_info("written up to eraseblock %u\n", i); + cond_resched(); + addr += mtd->writesize; + } + } + pr_info("written %u eraseblocks\n", i); + + /* Check all eraseblocks */ + prandom_seed_state(&rnd_state, 11); + pr_info("verifying all eraseblocks\n"); + for (i = 0; i < ebcnt - 1; ++i) { + if (bbt[i] || bbt[i + 1]) + continue; + prandom_bytes_state(&rnd_state, writebuf, + mtd->ecclayout->oobavail * 2); + addr = (i + 1) * mtd->erasesize - mtd->writesize; + ops.mode = MTD_OPS_AUTO_OOB; + ops.len = 0; + ops.retlen = 0; + ops.ooblen = mtd->ecclayout->oobavail * 2; + ops.oobretlen = 0; + ops.ooboffs = 0; + ops.datbuf = NULL; + ops.oobbuf = readbuf; + err = mtd_read_oob(mtd, addr, &ops); + if (err) + goto out; + if (memcmp(readbuf, writebuf, mtd->ecclayout->oobavail * 2)) { + pr_err("error: verify failed at %#llx\n", + (long long)addr); + errcnt += 1; + if (errcnt > 1000) { + pr_err("error: too many errors\n"); + goto out; + } + } + if (i % 256 == 0) + pr_info("verified up to eraseblock %u\n", i); + cond_resched(); + } + pr_info("verified %u eraseblocks\n", i); + + pr_info("finished with %d errors\n", errcnt); +out: + kfree(bbt); + kfree(writebuf); + kfree(readbuf); + put_mtd_device(mtd); + if (err) + pr_info("error %d occurred\n", err); + printk(KERN_INFO "=================================================\n"); + return err; +} +module_init(mtd_oobtest_init); + +static void __exit mtd_oobtest_exit(void) +{ + return; +} +module_exit(mtd_oobtest_exit); + +MODULE_DESCRIPTION("Out-of-band test module"); +MODULE_AUTHOR("Adrian Hunter"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/tests/mtd_pagetest.c b/drivers/mtd/tests/mtd_pagetest.c new file mode 100644 index 00000000..0c1140b6 --- /dev/null +++ b/drivers/mtd/tests/mtd_pagetest.c @@ -0,0 +1,615 @@ +/* + * Copyright (C) 2006-2008 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; see the file COPYING. If not, write to the Free Software + * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * Test page read and write on MTD device. + * + * Author: Adrian Hunter <ext-adrian.hunter@nokia.com> + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <asm/div64.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/err.h> +#include <linux/mtd/mtd.h> +#include <linux/slab.h> +#include <linux/sched.h> +#include <linux/random.h> + +static int dev = -EINVAL; +module_param(dev, int, S_IRUGO); +MODULE_PARM_DESC(dev, "MTD device number to use"); + +static struct mtd_info *mtd; +static unsigned char *twopages; +static unsigned char *writebuf; +static unsigned char *boundary; +static unsigned char *bbt; + +static int pgsize; +static int bufsize; +static int ebcnt; +static int pgcnt; +static int errcnt; +static struct rnd_state rnd_state; + +static int erase_eraseblock(int ebnum) +{ + int err; + struct erase_info ei; + loff_t addr = ebnum * mtd->erasesize; + + memset(&ei, 0, sizeof(struct erase_info)); + ei.mtd = mtd; + ei.addr = addr; + ei.len = mtd->erasesize; + + err = mtd_erase(mtd, &ei); + if (err) { + pr_err("error %d while erasing EB %d\n", err, ebnum); + return err; + } + + if (ei.state == MTD_ERASE_FAILED) { + pr_err("some erase error occurred at EB %d\n", + ebnum); + return -EIO; + } + + return 0; +} + +static int write_eraseblock(int ebnum) +{ + int err = 0; + size_t written; + loff_t addr = ebnum * mtd->erasesize; + + prandom_bytes_state(&rnd_state, writebuf, mtd->erasesize); + cond_resched(); + err = mtd_write(mtd, addr, mtd->erasesize, &written, writebuf); + if (err || written != mtd->erasesize) + pr_err("error: write failed at %#llx\n", + (long long)addr); + + return err; +} + +static int verify_eraseblock(int ebnum) +{ + uint32_t j; + size_t read; + int err = 0, i; + loff_t addr0, addrn; + loff_t addr = ebnum * mtd->erasesize; + + addr0 = 0; + for (i = 0; i < ebcnt && bbt[i]; ++i) + addr0 += mtd->erasesize; + + addrn = mtd->size; + for (i = 0; i < ebcnt && bbt[ebcnt - i - 1]; ++i) + addrn -= mtd->erasesize; + + prandom_bytes_state(&rnd_state, writebuf, mtd->erasesize); + for (j = 0; j < pgcnt - 1; ++j, addr += pgsize) { + /* Do a read to set the internal dataRAMs to different data */ + err = mtd_read(mtd, addr0, bufsize, &read, twopages); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != bufsize) { + pr_err("error: read failed at %#llx\n", + (long long)addr0); + return err; + } + err = mtd_read(mtd, addrn - bufsize, bufsize, &read, twopages); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != bufsize) { + pr_err("error: read failed at %#llx\n", + (long long)(addrn - bufsize)); + return err; + } + memset(twopages, 0, bufsize); + err = mtd_read(mtd, addr, bufsize, &read, twopages); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != bufsize) { + pr_err("error: read failed at %#llx\n", + (long long)addr); + break; + } + if (memcmp(twopages, writebuf + (j * pgsize), bufsize)) { + pr_err("error: verify failed at %#llx\n", + (long long)addr); + errcnt += 1; + } + } + /* Check boundary between eraseblocks */ + if (addr <= addrn - pgsize - pgsize && !bbt[ebnum + 1]) { + struct rnd_state old_state = rnd_state; + + /* Do a read to set the internal dataRAMs to different data */ + err = mtd_read(mtd, addr0, bufsize, &read, twopages); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != bufsize) { + pr_err("error: read failed at %#llx\n", + (long long)addr0); + return err; + } + err = mtd_read(mtd, addrn - bufsize, bufsize, &read, twopages); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != bufsize) { + pr_err("error: read failed at %#llx\n", + (long long)(addrn - bufsize)); + return err; + } + memset(twopages, 0, bufsize); + err = mtd_read(mtd, addr, bufsize, &read, twopages); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != bufsize) { + pr_err("error: read failed at %#llx\n", + (long long)addr); + return err; + } + memcpy(boundary, writebuf + mtd->erasesize - pgsize, pgsize); + prandom_bytes_state(&rnd_state, boundary + pgsize, pgsize); + if (memcmp(twopages, boundary, bufsize)) { + pr_err("error: verify failed at %#llx\n", + (long long)addr); + errcnt += 1; + } + rnd_state = old_state; + } + return err; +} + +static int crosstest(void) +{ + size_t read; + int err = 0, i; + loff_t addr, addr0, addrn; + unsigned char *pp1, *pp2, *pp3, *pp4; + + pr_info("crosstest\n"); + pp1 = kmalloc(pgsize * 4, GFP_KERNEL); + if (!pp1) { + pr_err("error: cannot allocate memory\n"); + return -ENOMEM; + } + pp2 = pp1 + pgsize; + pp3 = pp2 + pgsize; + pp4 = pp3 + pgsize; + memset(pp1, 0, pgsize * 4); + + addr0 = 0; + for (i = 0; i < ebcnt && bbt[i]; ++i) + addr0 += mtd->erasesize; + + addrn = mtd->size; + for (i = 0; i < ebcnt && bbt[ebcnt - i - 1]; ++i) + addrn -= mtd->erasesize; + + /* Read 2nd-to-last page to pp1 */ + addr = addrn - pgsize - pgsize; + err = mtd_read(mtd, addr, pgsize, &read, pp1); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != pgsize) { + pr_err("error: read failed at %#llx\n", + (long long)addr); + kfree(pp1); + return err; + } + + /* Read 3rd-to-last page to pp1 */ + addr = addrn - pgsize - pgsize - pgsize; + err = mtd_read(mtd, addr, pgsize, &read, pp1); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != pgsize) { + pr_err("error: read failed at %#llx\n", + (long long)addr); + kfree(pp1); + return err; + } + + /* Read first page to pp2 */ + addr = addr0; + pr_info("reading page at %#llx\n", (long long)addr); + err = mtd_read(mtd, addr, pgsize, &read, pp2); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != pgsize) { + pr_err("error: read failed at %#llx\n", + (long long)addr); + kfree(pp1); + return err; + } + + /* Read last page to pp3 */ + addr = addrn - pgsize; + pr_info("reading page at %#llx\n", (long long)addr); + err = mtd_read(mtd, addr, pgsize, &read, pp3); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != pgsize) { + pr_err("error: read failed at %#llx\n", + (long long)addr); + kfree(pp1); + return err; + } + + /* Read first page again to pp4 */ + addr = addr0; + pr_info("reading page at %#llx\n", (long long)addr); + err = mtd_read(mtd, addr, pgsize, &read, pp4); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != pgsize) { + pr_err("error: read failed at %#llx\n", + (long long)addr); + kfree(pp1); + return err; + } + + /* pp2 and pp4 should be the same */ + pr_info("verifying pages read at %#llx match\n", + (long long)addr0); + if (memcmp(pp2, pp4, pgsize)) { + pr_err("verify failed!\n"); + errcnt += 1; + } else if (!err) + pr_info("crosstest ok\n"); + kfree(pp1); + return err; +} + +static int erasecrosstest(void) +{ + size_t read, written; + int err = 0, i, ebnum, ebnum2; + loff_t addr0; + char *readbuf = twopages; + + pr_info("erasecrosstest\n"); + + ebnum = 0; + addr0 = 0; + for (i = 0; i < ebcnt && bbt[i]; ++i) { + addr0 += mtd->erasesize; + ebnum += 1; + } + + ebnum2 = ebcnt - 1; + while (ebnum2 && bbt[ebnum2]) + ebnum2 -= 1; + + pr_info("erasing block %d\n", ebnum); + err = erase_eraseblock(ebnum); + if (err) + return err; + + pr_info("writing 1st page of block %d\n", ebnum); + prandom_bytes_state(&rnd_state, writebuf, pgsize); + strcpy(writebuf, "There is no data like this!"); + err = mtd_write(mtd, addr0, pgsize, &written, writebuf); + if (err || written != pgsize) { + pr_info("error: write failed at %#llx\n", + (long long)addr0); + return err ? err : -1; + } + + pr_info("reading 1st page of block %d\n", ebnum); + memset(readbuf, 0, pgsize); + err = mtd_read(mtd, addr0, pgsize, &read, readbuf); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != pgsize) { + pr_err("error: read failed at %#llx\n", + (long long)addr0); + return err ? err : -1; + } + + pr_info("verifying 1st page of block %d\n", ebnum); + if (memcmp(writebuf, readbuf, pgsize)) { + pr_err("verify failed!\n"); + errcnt += 1; + return -1; + } + + pr_info("erasing block %d\n", ebnum); + err = erase_eraseblock(ebnum); + if (err) + return err; + + pr_info("writing 1st page of block %d\n", ebnum); + prandom_bytes_state(&rnd_state, writebuf, pgsize); + strcpy(writebuf, "There is no data like this!"); + err = mtd_write(mtd, addr0, pgsize, &written, writebuf); + if (err || written != pgsize) { + pr_err("error: write failed at %#llx\n", + (long long)addr0); + return err ? err : -1; + } + + pr_info("erasing block %d\n", ebnum2); + err = erase_eraseblock(ebnum2); + if (err) + return err; + + pr_info("reading 1st page of block %d\n", ebnum); + memset(readbuf, 0, pgsize); + err = mtd_read(mtd, addr0, pgsize, &read, readbuf); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != pgsize) { + pr_err("error: read failed at %#llx\n", + (long long)addr0); + return err ? err : -1; + } + + pr_info("verifying 1st page of block %d\n", ebnum); + if (memcmp(writebuf, readbuf, pgsize)) { + pr_err("verify failed!\n"); + errcnt += 1; + return -1; + } + + if (!err) + pr_info("erasecrosstest ok\n"); + return err; +} + +static int erasetest(void) +{ + size_t read, written; + int err = 0, i, ebnum, ok = 1; + loff_t addr0; + + pr_info("erasetest\n"); + + ebnum = 0; + addr0 = 0; + for (i = 0; i < ebcnt && bbt[i]; ++i) { + addr0 += mtd->erasesize; + ebnum += 1; + } + + pr_info("erasing block %d\n", ebnum); + err = erase_eraseblock(ebnum); + if (err) + return err; + + pr_info("writing 1st page of block %d\n", ebnum); + prandom_bytes_state(&rnd_state, writebuf, pgsize); + err = mtd_write(mtd, addr0, pgsize, &written, writebuf); + if (err || written != pgsize) { + pr_err("error: write failed at %#llx\n", + (long long)addr0); + return err ? err : -1; + } + + pr_info("erasing block %d\n", ebnum); + err = erase_eraseblock(ebnum); + if (err) + return err; + + pr_info("reading 1st page of block %d\n", ebnum); + err = mtd_read(mtd, addr0, pgsize, &read, twopages); + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != pgsize) { + pr_err("error: read failed at %#llx\n", + (long long)addr0); + return err ? err : -1; + } + + pr_info("verifying 1st page of block %d is all 0xff\n", + ebnum); + for (i = 0; i < pgsize; ++i) + if (twopages[i] != 0xff) { + pr_err("verifying all 0xff failed at %d\n", + i); + errcnt += 1; + ok = 0; + break; + } + + if (ok && !err) + pr_info("erasetest ok\n"); + + return err; +} + +static int is_block_bad(int ebnum) +{ + loff_t addr = ebnum * mtd->erasesize; + int ret; + + ret = mtd_block_isbad(mtd, addr); + if (ret) + pr_info("block %d is bad\n", ebnum); + return ret; +} + +static int scan_for_bad_eraseblocks(void) +{ + int i, bad = 0; + + bbt = kzalloc(ebcnt, GFP_KERNEL); + if (!bbt) { + pr_err("error: cannot allocate memory\n"); + return -ENOMEM; + } + + pr_info("scanning for bad eraseblocks\n"); + for (i = 0; i < ebcnt; ++i) { + bbt[i] = is_block_bad(i) ? 1 : 0; + if (bbt[i]) + bad += 1; + cond_resched(); + } + pr_info("scanned %d eraseblocks, %d are bad\n", i, bad); + return 0; +} + +static int __init mtd_pagetest_init(void) +{ + int err = 0; + uint64_t tmp; + uint32_t i; + + printk(KERN_INFO "\n"); + printk(KERN_INFO "=================================================\n"); + + if (dev < 0) { + pr_info("Please specify a valid mtd-device via module parameter\n"); + pr_crit("CAREFUL: This test wipes all data on the specified MTD device!\n"); + return -EINVAL; + } + + pr_info("MTD device: %d\n", dev); + + mtd = get_mtd_device(NULL, dev); + if (IS_ERR(mtd)) { + err = PTR_ERR(mtd); + pr_err("error: cannot get MTD device\n"); + return err; + } + + if (mtd->type != MTD_NANDFLASH) { + pr_info("this test requires NAND flash\n"); + goto out; + } + + tmp = mtd->size; + do_div(tmp, mtd->erasesize); + ebcnt = tmp; + pgcnt = mtd->erasesize / mtd->writesize; + pgsize = mtd->writesize; + + pr_info("MTD device size %llu, eraseblock size %u, " + "page size %u, count of eraseblocks %u, pages per " + "eraseblock %u, OOB size %u\n", + (unsigned long long)mtd->size, mtd->erasesize, + pgsize, ebcnt, pgcnt, mtd->oobsize); + + err = -ENOMEM; + bufsize = pgsize * 2; + writebuf = kmalloc(mtd->erasesize, GFP_KERNEL); + if (!writebuf) { + pr_err("error: cannot allocate memory\n"); + goto out; + } + twopages = kmalloc(bufsize, GFP_KERNEL); + if (!twopages) { + pr_err("error: cannot allocate memory\n"); + goto out; + } + boundary = kmalloc(bufsize, GFP_KERNEL); + if (!boundary) { + pr_err("error: cannot allocate memory\n"); + goto out; + } + + err = scan_for_bad_eraseblocks(); + if (err) + goto out; + + /* Erase all eraseblocks */ + pr_info("erasing whole device\n"); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = erase_eraseblock(i); + if (err) + goto out; + cond_resched(); + } + pr_info("erased %u eraseblocks\n", i); + + /* Write all eraseblocks */ + prandom_seed_state(&rnd_state, 1); + pr_info("writing whole device\n"); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = write_eraseblock(i); + if (err) + goto out; + if (i % 256 == 0) + pr_info("written up to eraseblock %u\n", i); + cond_resched(); + } + pr_info("written %u eraseblocks\n", i); + + /* Check all eraseblocks */ + prandom_seed_state(&rnd_state, 1); + pr_info("verifying all eraseblocks\n"); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = verify_eraseblock(i); + if (err) + goto out; + if (i % 256 == 0) + pr_info("verified up to eraseblock %u\n", i); + cond_resched(); + } + pr_info("verified %u eraseblocks\n", i); + + err = crosstest(); + if (err) + goto out; + + err = erasecrosstest(); + if (err) + goto out; + + err = erasetest(); + if (err) + goto out; + + pr_info("finished with %d errors\n", errcnt); +out: + + kfree(bbt); + kfree(boundary); + kfree(twopages); + kfree(writebuf); + put_mtd_device(mtd); + if (err) + pr_info("error %d occurred\n", err); + printk(KERN_INFO "=================================================\n"); + return err; +} +module_init(mtd_pagetest_init); + +static void __exit mtd_pagetest_exit(void) +{ + return; +} +module_exit(mtd_pagetest_exit); + +MODULE_DESCRIPTION("NAND page test"); +MODULE_AUTHOR("Adrian Hunter"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/tests/mtd_readtest.c b/drivers/mtd/tests/mtd_readtest.c new file mode 100644 index 00000000..266de04b --- /dev/null +++ b/drivers/mtd/tests/mtd_readtest.c @@ -0,0 +1,263 @@ +/* + * Copyright (C) 2006-2008 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; see the file COPYING. If not, write to the Free Software + * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * Check MTD device read. + * + * Author: Adrian Hunter <ext-adrian.hunter@nokia.com> + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/err.h> +#include <linux/mtd/mtd.h> +#include <linux/slab.h> +#include <linux/sched.h> + +static int dev = -EINVAL; +module_param(dev, int, S_IRUGO); +MODULE_PARM_DESC(dev, "MTD device number to use"); + +static struct mtd_info *mtd; +static unsigned char *iobuf; +static unsigned char *iobuf1; +static unsigned char *bbt; + +static int pgsize; +static int ebcnt; +static int pgcnt; + +static int read_eraseblock_by_page(int ebnum) +{ + size_t read; + int i, ret, err = 0; + loff_t addr = ebnum * mtd->erasesize; + void *buf = iobuf; + void *oobbuf = iobuf1; + + for (i = 0; i < pgcnt; i++) { + memset(buf, 0 , pgsize); + ret = mtd_read(mtd, addr, pgsize, &read, buf); + if (ret == -EUCLEAN) + ret = 0; + if (ret || read != pgsize) { + pr_err("error: read failed at %#llx\n", + (long long)addr); + if (!err) + err = ret; + if (!err) + err = -EINVAL; + } + if (mtd->oobsize) { + struct mtd_oob_ops ops; + + ops.mode = MTD_OPS_PLACE_OOB; + ops.len = 0; + ops.retlen = 0; + ops.ooblen = mtd->oobsize; + ops.oobretlen = 0; + ops.ooboffs = 0; + ops.datbuf = NULL; + ops.oobbuf = oobbuf; + ret = mtd_read_oob(mtd, addr, &ops); + if ((ret && !mtd_is_bitflip(ret)) || + ops.oobretlen != mtd->oobsize) { + pr_err("error: read oob failed at " + "%#llx\n", (long long)addr); + if (!err) + err = ret; + if (!err) + err = -EINVAL; + } + oobbuf += mtd->oobsize; + } + addr += pgsize; + buf += pgsize; + } + + return err; +} + +static void dump_eraseblock(int ebnum) +{ + int i, j, n; + char line[128]; + int pg, oob; + + pr_info("dumping eraseblock %d\n", ebnum); + n = mtd->erasesize; + for (i = 0; i < n;) { + char *p = line; + + p += sprintf(p, "%05x: ", i); + for (j = 0; j < 32 && i < n; j++, i++) + p += sprintf(p, "%02x", (unsigned int)iobuf[i]); + printk(KERN_CRIT "%s\n", line); + cond_resched(); + } + if (!mtd->oobsize) + return; + pr_info("dumping oob from eraseblock %d\n", ebnum); + n = mtd->oobsize; + for (pg = 0, i = 0; pg < pgcnt; pg++) + for (oob = 0; oob < n;) { + char *p = line; + + p += sprintf(p, "%05x: ", i); + for (j = 0; j < 32 && oob < n; j++, oob++, i++) + p += sprintf(p, "%02x", + (unsigned int)iobuf1[i]); + printk(KERN_CRIT "%s\n", line); + cond_resched(); + } +} + +static int is_block_bad(int ebnum) +{ + loff_t addr = ebnum * mtd->erasesize; + int ret; + + ret = mtd_block_isbad(mtd, addr); + if (ret) + pr_info("block %d is bad\n", ebnum); + return ret; +} + +static int scan_for_bad_eraseblocks(void) +{ + int i, bad = 0; + + bbt = kzalloc(ebcnt, GFP_KERNEL); + if (!bbt) { + pr_err("error: cannot allocate memory\n"); + return -ENOMEM; + } + + if (!mtd_can_have_bb(mtd)) + return 0; + + pr_info("scanning for bad eraseblocks\n"); + for (i = 0; i < ebcnt; ++i) { + bbt[i] = is_block_bad(i) ? 1 : 0; + if (bbt[i]) + bad += 1; + cond_resched(); + } + pr_info("scanned %d eraseblocks, %d are bad\n", i, bad); + return 0; +} + +static int __init mtd_readtest_init(void) +{ + uint64_t tmp; + int err, i; + + printk(KERN_INFO "\n"); + printk(KERN_INFO "=================================================\n"); + + if (dev < 0) { + pr_info("Please specify a valid mtd-device via module parameter\n"); + return -EINVAL; + } + + pr_info("MTD device: %d\n", dev); + + mtd = get_mtd_device(NULL, dev); + if (IS_ERR(mtd)) { + err = PTR_ERR(mtd); + pr_err("error: Cannot get MTD device\n"); + return err; + } + + if (mtd->writesize == 1) { + pr_info("not NAND flash, assume page size is 512 " + "bytes.\n"); + pgsize = 512; + } else + pgsize = mtd->writesize; + + tmp = mtd->size; + do_div(tmp, mtd->erasesize); + ebcnt = tmp; + pgcnt = mtd->erasesize / pgsize; + + pr_info("MTD device size %llu, eraseblock size %u, " + "page size %u, count of eraseblocks %u, pages per " + "eraseblock %u, OOB size %u\n", + (unsigned long long)mtd->size, mtd->erasesize, + pgsize, ebcnt, pgcnt, mtd->oobsize); + + err = -ENOMEM; + iobuf = kmalloc(mtd->erasesize, GFP_KERNEL); + if (!iobuf) { + pr_err("error: cannot allocate memory\n"); + goto out; + } + iobuf1 = kmalloc(mtd->erasesize, GFP_KERNEL); + if (!iobuf1) { + pr_err("error: cannot allocate memory\n"); + goto out; + } + + err = scan_for_bad_eraseblocks(); + if (err) + goto out; + + /* Read all eraseblocks 1 page at a time */ + pr_info("testing page read\n"); + for (i = 0; i < ebcnt; ++i) { + int ret; + + if (bbt[i]) + continue; + ret = read_eraseblock_by_page(i); + if (ret) { + dump_eraseblock(i); + if (!err) + err = ret; + } + cond_resched(); + } + + if (err) + pr_info("finished with errors\n"); + else + pr_info("finished\n"); + +out: + + kfree(iobuf); + kfree(iobuf1); + kfree(bbt); + put_mtd_device(mtd); + if (err) + pr_info("error %d occurred\n", err); + printk(KERN_INFO "=================================================\n"); + return err; +} +module_init(mtd_readtest_init); + +static void __exit mtd_readtest_exit(void) +{ + return; +} +module_exit(mtd_readtest_exit); + +MODULE_DESCRIPTION("Read test module"); +MODULE_AUTHOR("Adrian Hunter"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/tests/mtd_speedtest.c b/drivers/mtd/tests/mtd_speedtest.c new file mode 100644 index 00000000..a6ce9c1f --- /dev/null +++ b/drivers/mtd/tests/mtd_speedtest.c @@ -0,0 +1,560 @@ +/* + * Copyright (C) 2007 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; see the file COPYING. If not, write to the Free Software + * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * Test read and write speed of a MTD device. + * + * Author: Adrian Hunter <adrian.hunter@nokia.com> + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/err.h> +#include <linux/mtd/mtd.h> +#include <linux/slab.h> +#include <linux/sched.h> +#include <linux/random.h> + +static int dev = -EINVAL; +module_param(dev, int, S_IRUGO); +MODULE_PARM_DESC(dev, "MTD device number to use"); + +static int count; +module_param(count, int, S_IRUGO); +MODULE_PARM_DESC(count, "Maximum number of eraseblocks to use " + "(0 means use all)"); + +static struct mtd_info *mtd; +static unsigned char *iobuf; +static unsigned char *bbt; + +static int pgsize; +static int ebcnt; +static int pgcnt; +static int goodebcnt; +static struct timeval start, finish; + + +static int erase_eraseblock(int ebnum) +{ + int err; + struct erase_info ei; + loff_t addr = ebnum * mtd->erasesize; + + memset(&ei, 0, sizeof(struct erase_info)); + ei.mtd = mtd; + ei.addr = addr; + ei.len = mtd->erasesize; + + err = mtd_erase(mtd, &ei); + if (err) { + pr_err("error %d while erasing EB %d\n", err, ebnum); + return err; + } + + if (ei.state == MTD_ERASE_FAILED) { + pr_err("some erase error occurred at EB %d\n", + ebnum); + return -EIO; + } + + return 0; +} + +static int multiblock_erase(int ebnum, int blocks) +{ + int err; + struct erase_info ei; + loff_t addr = ebnum * mtd->erasesize; + + memset(&ei, 0, sizeof(struct erase_info)); + ei.mtd = mtd; + ei.addr = addr; + ei.len = mtd->erasesize * blocks; + + err = mtd_erase(mtd, &ei); + if (err) { + pr_err("error %d while erasing EB %d, blocks %d\n", + err, ebnum, blocks); + return err; + } + + if (ei.state == MTD_ERASE_FAILED) { + pr_err("some erase error occurred at EB %d," + "blocks %d\n", ebnum, blocks); + return -EIO; + } + + return 0; +} + +static int erase_whole_device(void) +{ + int err; + unsigned int i; + + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = erase_eraseblock(i); + if (err) + return err; + cond_resched(); + } + return 0; +} + +static int write_eraseblock(int ebnum) +{ + size_t written; + int err = 0; + loff_t addr = ebnum * mtd->erasesize; + + err = mtd_write(mtd, addr, mtd->erasesize, &written, iobuf); + if (err || written != mtd->erasesize) { + pr_err("error: write failed at %#llx\n", addr); + if (!err) + err = -EINVAL; + } + + return err; +} + +static int write_eraseblock_by_page(int ebnum) +{ + size_t written; + int i, err = 0; + loff_t addr = ebnum * mtd->erasesize; + void *buf = iobuf; + + for (i = 0; i < pgcnt; i++) { + err = mtd_write(mtd, addr, pgsize, &written, buf); + if (err || written != pgsize) { + pr_err("error: write failed at %#llx\n", + addr); + if (!err) + err = -EINVAL; + break; + } + addr += pgsize; + buf += pgsize; + } + + return err; +} + +static int write_eraseblock_by_2pages(int ebnum) +{ + size_t written, sz = pgsize * 2; + int i, n = pgcnt / 2, err = 0; + loff_t addr = ebnum * mtd->erasesize; + void *buf = iobuf; + + for (i = 0; i < n; i++) { + err = mtd_write(mtd, addr, sz, &written, buf); + if (err || written != sz) { + pr_err("error: write failed at %#llx\n", + addr); + if (!err) + err = -EINVAL; + return err; + } + addr += sz; + buf += sz; + } + if (pgcnt % 2) { + err = mtd_write(mtd, addr, pgsize, &written, buf); + if (err || written != pgsize) { + pr_err("error: write failed at %#llx\n", + addr); + if (!err) + err = -EINVAL; + } + } + + return err; +} + +static int read_eraseblock(int ebnum) +{ + size_t read; + int err = 0; + loff_t addr = ebnum * mtd->erasesize; + + err = mtd_read(mtd, addr, mtd->erasesize, &read, iobuf); + /* Ignore corrected ECC errors */ + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != mtd->erasesize) { + pr_err("error: read failed at %#llx\n", addr); + if (!err) + err = -EINVAL; + } + + return err; +} + +static int read_eraseblock_by_page(int ebnum) +{ + size_t read; + int i, err = 0; + loff_t addr = ebnum * mtd->erasesize; + void *buf = iobuf; + + for (i = 0; i < pgcnt; i++) { + err = mtd_read(mtd, addr, pgsize, &read, buf); + /* Ignore corrected ECC errors */ + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != pgsize) { + pr_err("error: read failed at %#llx\n", + addr); + if (!err) + err = -EINVAL; + break; + } + addr += pgsize; + buf += pgsize; + } + + return err; +} + +static int read_eraseblock_by_2pages(int ebnum) +{ + size_t read, sz = pgsize * 2; + int i, n = pgcnt / 2, err = 0; + loff_t addr = ebnum * mtd->erasesize; + void *buf = iobuf; + + for (i = 0; i < n; i++) { + err = mtd_read(mtd, addr, sz, &read, buf); + /* Ignore corrected ECC errors */ + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != sz) { + pr_err("error: read failed at %#llx\n", + addr); + if (!err) + err = -EINVAL; + return err; + } + addr += sz; + buf += sz; + } + if (pgcnt % 2) { + err = mtd_read(mtd, addr, pgsize, &read, buf); + /* Ignore corrected ECC errors */ + if (mtd_is_bitflip(err)) + err = 0; + if (err || read != pgsize) { + pr_err("error: read failed at %#llx\n", + addr); + if (!err) + err = -EINVAL; + } + } + + return err; +} + +static int is_block_bad(int ebnum) +{ + loff_t addr = ebnum * mtd->erasesize; + int ret; + + ret = mtd_block_isbad(mtd, addr); + if (ret) + pr_info("block %d is bad\n", ebnum); + return ret; +} + +static inline void start_timing(void) +{ + do_gettimeofday(&start); +} + +static inline void stop_timing(void) +{ + do_gettimeofday(&finish); +} + +static long calc_speed(void) +{ + uint64_t k; + long ms; + + ms = (finish.tv_sec - start.tv_sec) * 1000 + + (finish.tv_usec - start.tv_usec) / 1000; + if (ms == 0) + return 0; + k = goodebcnt * (mtd->erasesize / 1024) * 1000; + do_div(k, ms); + return k; +} + +static int scan_for_bad_eraseblocks(void) +{ + int i, bad = 0; + + bbt = kzalloc(ebcnt, GFP_KERNEL); + if (!bbt) { + pr_err("error: cannot allocate memory\n"); + return -ENOMEM; + } + + if (!mtd_can_have_bb(mtd)) + goto out; + + pr_info("scanning for bad eraseblocks\n"); + for (i = 0; i < ebcnt; ++i) { + bbt[i] = is_block_bad(i) ? 1 : 0; + if (bbt[i]) + bad += 1; + cond_resched(); + } + pr_info("scanned %d eraseblocks, %d are bad\n", i, bad); +out: + goodebcnt = ebcnt - bad; + return 0; +} + +static int __init mtd_speedtest_init(void) +{ + int err, i, blocks, j, k; + long speed; + uint64_t tmp; + + printk(KERN_INFO "\n"); + printk(KERN_INFO "=================================================\n"); + + if (dev < 0) { + pr_info("Please specify a valid mtd-device via module parameter\n"); + pr_crit("CAREFUL: This test wipes all data on the specified MTD device!\n"); + return -EINVAL; + } + + if (count) + pr_info("MTD device: %d count: %d\n", dev, count); + else + pr_info("MTD device: %d\n", dev); + + mtd = get_mtd_device(NULL, dev); + if (IS_ERR(mtd)) { + err = PTR_ERR(mtd); + pr_err("error: cannot get MTD device\n"); + return err; + } + + if (mtd->writesize == 1) { + pr_info("not NAND flash, assume page size is 512 " + "bytes.\n"); + pgsize = 512; + } else + pgsize = mtd->writesize; + + tmp = mtd->size; + do_div(tmp, mtd->erasesize); + ebcnt = tmp; + pgcnt = mtd->erasesize / pgsize; + + pr_info("MTD device size %llu, eraseblock size %u, " + "page size %u, count of eraseblocks %u, pages per " + "eraseblock %u, OOB size %u\n", + (unsigned long long)mtd->size, mtd->erasesize, + pgsize, ebcnt, pgcnt, mtd->oobsize); + + if (count > 0 && count < ebcnt) + ebcnt = count; + + err = -ENOMEM; + iobuf = kmalloc(mtd->erasesize, GFP_KERNEL); + if (!iobuf) { + pr_err("error: cannot allocate memory\n"); + goto out; + } + + prandom_bytes(iobuf, mtd->erasesize); + + err = scan_for_bad_eraseblocks(); + if (err) + goto out; + + err = erase_whole_device(); + if (err) + goto out; + + /* Write all eraseblocks, 1 eraseblock at a time */ + pr_info("testing eraseblock write speed\n"); + start_timing(); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = write_eraseblock(i); + if (err) + goto out; + cond_resched(); + } + stop_timing(); + speed = calc_speed(); + pr_info("eraseblock write speed is %ld KiB/s\n", speed); + + /* Read all eraseblocks, 1 eraseblock at a time */ + pr_info("testing eraseblock read speed\n"); + start_timing(); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = read_eraseblock(i); + if (err) + goto out; + cond_resched(); + } + stop_timing(); + speed = calc_speed(); + pr_info("eraseblock read speed is %ld KiB/s\n", speed); + + err = erase_whole_device(); + if (err) + goto out; + + /* Write all eraseblocks, 1 page at a time */ + pr_info("testing page write speed\n"); + start_timing(); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = write_eraseblock_by_page(i); + if (err) + goto out; + cond_resched(); + } + stop_timing(); + speed = calc_speed(); + pr_info("page write speed is %ld KiB/s\n", speed); + + /* Read all eraseblocks, 1 page at a time */ + pr_info("testing page read speed\n"); + start_timing(); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = read_eraseblock_by_page(i); + if (err) + goto out; + cond_resched(); + } + stop_timing(); + speed = calc_speed(); + pr_info("page read speed is %ld KiB/s\n", speed); + + err = erase_whole_device(); + if (err) + goto out; + + /* Write all eraseblocks, 2 pages at a time */ + pr_info("testing 2 page write speed\n"); + start_timing(); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = write_eraseblock_by_2pages(i); + if (err) + goto out; + cond_resched(); + } + stop_timing(); + speed = calc_speed(); + pr_info("2 page write speed is %ld KiB/s\n", speed); + + /* Read all eraseblocks, 2 pages at a time */ + pr_info("testing 2 page read speed\n"); + start_timing(); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = read_eraseblock_by_2pages(i); + if (err) + goto out; + cond_resched(); + } + stop_timing(); + speed = calc_speed(); + pr_info("2 page read speed is %ld KiB/s\n", speed); + + /* Erase all eraseblocks */ + pr_info("Testing erase speed\n"); + start_timing(); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = erase_eraseblock(i); + if (err) + goto out; + cond_resched(); + } + stop_timing(); + speed = calc_speed(); + pr_info("erase speed is %ld KiB/s\n", speed); + + /* Multi-block erase all eraseblocks */ + for (k = 1; k < 7; k++) { + blocks = 1 << k; + pr_info("Testing %dx multi-block erase speed\n", + blocks); + start_timing(); + for (i = 0; i < ebcnt; ) { + for (j = 0; j < blocks && (i + j) < ebcnt; j++) + if (bbt[i + j]) + break; + if (j < 1) { + i++; + continue; + } + err = multiblock_erase(i, j); + if (err) + goto out; + cond_resched(); + i += j; + } + stop_timing(); + speed = calc_speed(); + pr_info("%dx multi-block erase speed is %ld KiB/s\n", + blocks, speed); + } + pr_info("finished\n"); +out: + kfree(iobuf); + kfree(bbt); + put_mtd_device(mtd); + if (err) + pr_info("error %d occurred\n", err); + printk(KERN_INFO "=================================================\n"); + return err; +} +module_init(mtd_speedtest_init); + +static void __exit mtd_speedtest_exit(void) +{ + return; +} +module_exit(mtd_speedtest_exit); + +MODULE_DESCRIPTION("Speed test module"); +MODULE_AUTHOR("Adrian Hunter"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/tests/mtd_stresstest.c b/drivers/mtd/tests/mtd_stresstest.c new file mode 100644 index 00000000..787f539d --- /dev/null +++ b/drivers/mtd/tests/mtd_stresstest.c @@ -0,0 +1,325 @@ +/* + * Copyright (C) 2006-2008 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; see the file COPYING. If not, write to the Free Software + * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * Test random reads, writes and erases on MTD device. + * + * Author: Adrian Hunter <ext-adrian.hunter@nokia.com> + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/err.h> +#include <linux/mtd/mtd.h> +#include <linux/slab.h> +#include <linux/sched.h> +#include <linux/vmalloc.h> +#include <linux/random.h> + +static int dev = -EINVAL; +module_param(dev, int, S_IRUGO); +MODULE_PARM_DESC(dev, "MTD device number to use"); + +static int count = 10000; +module_param(count, int, S_IRUGO); +MODULE_PARM_DESC(count, "Number of operations to do (default is 10000)"); + +static struct mtd_info *mtd; +static unsigned char *writebuf; +static unsigned char *readbuf; +static unsigned char *bbt; +static int *offsets; + +static int pgsize; +static int bufsize; +static int ebcnt; +static int pgcnt; + +static int rand_eb(void) +{ + unsigned int eb; + +again: + eb = prandom_u32(); + /* Read or write up 2 eraseblocks at a time - hence 'ebcnt - 1' */ + eb %= (ebcnt - 1); + if (bbt[eb]) + goto again; + return eb; +} + +static int rand_offs(void) +{ + unsigned int offs; + + offs = prandom_u32(); + offs %= bufsize; + return offs; +} + +static int rand_len(int offs) +{ + unsigned int len; + + len = prandom_u32(); + len %= (bufsize - offs); + return len; +} + +static int erase_eraseblock(int ebnum) +{ + int err; + struct erase_info ei; + loff_t addr = ebnum * mtd->erasesize; + + memset(&ei, 0, sizeof(struct erase_info)); + ei.mtd = mtd; + ei.addr = addr; + ei.len = mtd->erasesize; + + err = mtd_erase(mtd, &ei); + if (unlikely(err)) { + pr_err("error %d while erasing EB %d\n", err, ebnum); + return err; + } + + if (unlikely(ei.state == MTD_ERASE_FAILED)) { + pr_err("some erase error occurred at EB %d\n", + ebnum); + return -EIO; + } + + return 0; +} + +static int is_block_bad(int ebnum) +{ + loff_t addr = ebnum * mtd->erasesize; + int ret; + + ret = mtd_block_isbad(mtd, addr); + if (ret) + pr_info("block %d is bad\n", ebnum); + return ret; +} + +static int do_read(void) +{ + size_t read; + int eb = rand_eb(); + int offs = rand_offs(); + int len = rand_len(offs), err; + loff_t addr; + + if (bbt[eb + 1]) { + if (offs >= mtd->erasesize) + offs -= mtd->erasesize; + if (offs + len > mtd->erasesize) + len = mtd->erasesize - offs; + } + addr = eb * mtd->erasesize + offs; + err = mtd_read(mtd, addr, len, &read, readbuf); + if (mtd_is_bitflip(err)) + err = 0; + if (unlikely(err || read != len)) { + pr_err("error: read failed at 0x%llx\n", + (long long)addr); + if (!err) + err = -EINVAL; + return err; + } + return 0; +} + +static int do_write(void) +{ + int eb = rand_eb(), offs, err, len; + size_t written; + loff_t addr; + + offs = offsets[eb]; + if (offs >= mtd->erasesize) { + err = erase_eraseblock(eb); + if (err) + return err; + offs = offsets[eb] = 0; + } + len = rand_len(offs); + len = ((len + pgsize - 1) / pgsize) * pgsize; + if (offs + len > mtd->erasesize) { + if (bbt[eb + 1]) + len = mtd->erasesize - offs; + else { + err = erase_eraseblock(eb + 1); + if (err) + return err; + offsets[eb + 1] = 0; + } + } + addr = eb * mtd->erasesize + offs; + err = mtd_write(mtd, addr, len, &written, writebuf); + if (unlikely(err || written != len)) { + pr_err("error: write failed at 0x%llx\n", + (long long)addr); + if (!err) + err = -EINVAL; + return err; + } + offs += len; + while (offs > mtd->erasesize) { + offsets[eb++] = mtd->erasesize; + offs -= mtd->erasesize; + } + offsets[eb] = offs; + return 0; +} + +static int do_operation(void) +{ + if (prandom_u32() & 1) + return do_read(); + else + return do_write(); +} + +static int scan_for_bad_eraseblocks(void) +{ + int i, bad = 0; + + bbt = kzalloc(ebcnt, GFP_KERNEL); + if (!bbt) { + pr_err("error: cannot allocate memory\n"); + return -ENOMEM; + } + + if (!mtd_can_have_bb(mtd)) + return 0; + + pr_info("scanning for bad eraseblocks\n"); + for (i = 0; i < ebcnt; ++i) { + bbt[i] = is_block_bad(i) ? 1 : 0; + if (bbt[i]) + bad += 1; + cond_resched(); + } + pr_info("scanned %d eraseblocks, %d are bad\n", i, bad); + return 0; +} + +static int __init mtd_stresstest_init(void) +{ + int err; + int i, op; + uint64_t tmp; + + printk(KERN_INFO "\n"); + printk(KERN_INFO "=================================================\n"); + + if (dev < 0) { + pr_info("Please specify a valid mtd-device via module parameter\n"); + pr_crit("CAREFUL: This test wipes all data on the specified MTD device!\n"); + return -EINVAL; + } + + pr_info("MTD device: %d\n", dev); + + mtd = get_mtd_device(NULL, dev); + if (IS_ERR(mtd)) { + err = PTR_ERR(mtd); + pr_err("error: cannot get MTD device\n"); + return err; + } + + if (mtd->writesize == 1) { + pr_info("not NAND flash, assume page size is 512 " + "bytes.\n"); + pgsize = 512; + } else + pgsize = mtd->writesize; + + tmp = mtd->size; + do_div(tmp, mtd->erasesize); + ebcnt = tmp; + pgcnt = mtd->erasesize / pgsize; + + pr_info("MTD device size %llu, eraseblock size %u, " + "page size %u, count of eraseblocks %u, pages per " + "eraseblock %u, OOB size %u\n", + (unsigned long long)mtd->size, mtd->erasesize, + pgsize, ebcnt, pgcnt, mtd->oobsize); + + if (ebcnt < 2) { + pr_err("error: need at least 2 eraseblocks\n"); + err = -ENOSPC; + goto out_put_mtd; + } + + /* Read or write up 2 eraseblocks at a time */ + bufsize = mtd->erasesize * 2; + + err = -ENOMEM; + readbuf = vmalloc(bufsize); + writebuf = vmalloc(bufsize); + offsets = kmalloc(ebcnt * sizeof(int), GFP_KERNEL); + if (!readbuf || !writebuf || !offsets) { + pr_err("error: cannot allocate memory\n"); + goto out; + } + for (i = 0; i < ebcnt; i++) + offsets[i] = mtd->erasesize; + prandom_bytes(writebuf, bufsize); + + err = scan_for_bad_eraseblocks(); + if (err) + goto out; + + /* Do operations */ + pr_info("doing operations\n"); + for (op = 0; op < count; op++) { + if ((op & 1023) == 0) + pr_info("%d operations done\n", op); + err = do_operation(); + if (err) + goto out; + cond_resched(); + } + pr_info("finished, %d operations done\n", op); + +out: + kfree(offsets); + kfree(bbt); + vfree(writebuf); + vfree(readbuf); +out_put_mtd: + put_mtd_device(mtd); + if (err) + pr_info("error %d occurred\n", err); + printk(KERN_INFO "=================================================\n"); + return err; +} +module_init(mtd_stresstest_init); + +static void __exit mtd_stresstest_exit(void) +{ + return; +} +module_exit(mtd_stresstest_exit); + +MODULE_DESCRIPTION("Stress test module"); +MODULE_AUTHOR("Adrian Hunter"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/tests/mtd_subpagetest.c b/drivers/mtd/tests/mtd_subpagetest.c new file mode 100644 index 00000000..aade56f2 --- /dev/null +++ b/drivers/mtd/tests/mtd_subpagetest.c @@ -0,0 +1,510 @@ +/* + * Copyright (C) 2006-2007 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; see the file COPYING. If not, write to the Free Software + * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * Test sub-page read and write on MTD device. + * Author: Adrian Hunter <ext-adrian.hunter@nokia.com> + * + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/err.h> +#include <linux/mtd/mtd.h> +#include <linux/slab.h> +#include <linux/sched.h> +#include <linux/random.h> + +static int dev = -EINVAL; +module_param(dev, int, S_IRUGO); +MODULE_PARM_DESC(dev, "MTD device number to use"); + +static struct mtd_info *mtd; +static unsigned char *writebuf; +static unsigned char *readbuf; +static unsigned char *bbt; + +static int subpgsize; +static int bufsize; +static int ebcnt; +static int pgcnt; +static int errcnt; +static struct rnd_state rnd_state; + +static inline void clear_data(unsigned char *buf, size_t len) +{ + memset(buf, 0, len); +} + +static int erase_eraseblock(int ebnum) +{ + int err; + struct erase_info ei; + loff_t addr = ebnum * mtd->erasesize; + + memset(&ei, 0, sizeof(struct erase_info)); + ei.mtd = mtd; + ei.addr = addr; + ei.len = mtd->erasesize; + + err = mtd_erase(mtd, &ei); + if (err) { + pr_err("error %d while erasing EB %d\n", err, ebnum); + return err; + } + + if (ei.state == MTD_ERASE_FAILED) { + pr_err("some erase error occurred at EB %d\n", + ebnum); + return -EIO; + } + + return 0; +} + +static int erase_whole_device(void) +{ + int err; + unsigned int i; + + pr_info("erasing whole device\n"); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = erase_eraseblock(i); + if (err) + return err; + cond_resched(); + } + pr_info("erased %u eraseblocks\n", i); + return 0; +} + +static int write_eraseblock(int ebnum) +{ + size_t written; + int err = 0; + loff_t addr = ebnum * mtd->erasesize; + + prandom_bytes_state(&rnd_state, writebuf, subpgsize); + err = mtd_write(mtd, addr, subpgsize, &written, writebuf); + if (unlikely(err || written != subpgsize)) { + pr_err("error: write failed at %#llx\n", + (long long)addr); + if (written != subpgsize) { + pr_err(" write size: %#x\n", subpgsize); + pr_err(" written: %#zx\n", written); + } + return err ? err : -1; + } + + addr += subpgsize; + + prandom_bytes_state(&rnd_state, writebuf, subpgsize); + err = mtd_write(mtd, addr, subpgsize, &written, writebuf); + if (unlikely(err || written != subpgsize)) { + pr_err("error: write failed at %#llx\n", + (long long)addr); + if (written != subpgsize) { + pr_err(" write size: %#x\n", subpgsize); + pr_err(" written: %#zx\n", written); + } + return err ? err : -1; + } + + return err; +} + +static int write_eraseblock2(int ebnum) +{ + size_t written; + int err = 0, k; + loff_t addr = ebnum * mtd->erasesize; + + for (k = 1; k < 33; ++k) { + if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize) + break; + prandom_bytes_state(&rnd_state, writebuf, subpgsize * k); + err = mtd_write(mtd, addr, subpgsize * k, &written, writebuf); + if (unlikely(err || written != subpgsize * k)) { + pr_err("error: write failed at %#llx\n", + (long long)addr); + if (written != subpgsize) { + pr_err(" write size: %#x\n", + subpgsize * k); + pr_err(" written: %#08zx\n", + written); + } + return err ? err : -1; + } + addr += subpgsize * k; + } + + return err; +} + +static void print_subpage(unsigned char *p) +{ + int i, j; + + for (i = 0; i < subpgsize; ) { + for (j = 0; i < subpgsize && j < 32; ++i, ++j) + printk("%02x", *p++); + printk("\n"); + } +} + +static int verify_eraseblock(int ebnum) +{ + size_t read; + int err = 0; + loff_t addr = ebnum * mtd->erasesize; + + prandom_bytes_state(&rnd_state, writebuf, subpgsize); + clear_data(readbuf, subpgsize); + err = mtd_read(mtd, addr, subpgsize, &read, readbuf); + if (unlikely(err || read != subpgsize)) { + if (mtd_is_bitflip(err) && read == subpgsize) { + pr_info("ECC correction at %#llx\n", + (long long)addr); + err = 0; + } else { + pr_err("error: read failed at %#llx\n", + (long long)addr); + return err ? err : -1; + } + } + if (unlikely(memcmp(readbuf, writebuf, subpgsize))) { + pr_err("error: verify failed at %#llx\n", + (long long)addr); + pr_info("------------- written----------------\n"); + print_subpage(writebuf); + pr_info("------------- read ------------------\n"); + print_subpage(readbuf); + pr_info("-------------------------------------\n"); + errcnt += 1; + } + + addr += subpgsize; + + prandom_bytes_state(&rnd_state, writebuf, subpgsize); + clear_data(readbuf, subpgsize); + err = mtd_read(mtd, addr, subpgsize, &read, readbuf); + if (unlikely(err || read != subpgsize)) { + if (mtd_is_bitflip(err) && read == subpgsize) { + pr_info("ECC correction at %#llx\n", + (long long)addr); + err = 0; + } else { + pr_err("error: read failed at %#llx\n", + (long long)addr); + return err ? err : -1; + } + } + if (unlikely(memcmp(readbuf, writebuf, subpgsize))) { + pr_info("error: verify failed at %#llx\n", + (long long)addr); + pr_info("------------- written----------------\n"); + print_subpage(writebuf); + pr_info("------------- read ------------------\n"); + print_subpage(readbuf); + pr_info("-------------------------------------\n"); + errcnt += 1; + } + + return err; +} + +static int verify_eraseblock2(int ebnum) +{ + size_t read; + int err = 0, k; + loff_t addr = ebnum * mtd->erasesize; + + for (k = 1; k < 33; ++k) { + if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize) + break; + prandom_bytes_state(&rnd_state, writebuf, subpgsize * k); + clear_data(readbuf, subpgsize * k); + err = mtd_read(mtd, addr, subpgsize * k, &read, readbuf); + if (unlikely(err || read != subpgsize * k)) { + if (mtd_is_bitflip(err) && read == subpgsize * k) { + pr_info("ECC correction at %#llx\n", + (long long)addr); + err = 0; + } else { + pr_err("error: read failed at " + "%#llx\n", (long long)addr); + return err ? err : -1; + } + } + if (unlikely(memcmp(readbuf, writebuf, subpgsize * k))) { + pr_err("error: verify failed at %#llx\n", + (long long)addr); + errcnt += 1; + } + addr += subpgsize * k; + } + + return err; +} + +static int verify_eraseblock_ff(int ebnum) +{ + uint32_t j; + size_t read; + int err = 0; + loff_t addr = ebnum * mtd->erasesize; + + memset(writebuf, 0xff, subpgsize); + for (j = 0; j < mtd->erasesize / subpgsize; ++j) { + clear_data(readbuf, subpgsize); + err = mtd_read(mtd, addr, subpgsize, &read, readbuf); + if (unlikely(err || read != subpgsize)) { + if (mtd_is_bitflip(err) && read == subpgsize) { + pr_info("ECC correction at %#llx\n", + (long long)addr); + err = 0; + } else { + pr_err("error: read failed at " + "%#llx\n", (long long)addr); + return err ? err : -1; + } + } + if (unlikely(memcmp(readbuf, writebuf, subpgsize))) { + pr_err("error: verify 0xff failed at " + "%#llx\n", (long long)addr); + errcnt += 1; + } + addr += subpgsize; + } + + return err; +} + +static int verify_all_eraseblocks_ff(void) +{ + int err; + unsigned int i; + + pr_info("verifying all eraseblocks for 0xff\n"); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = verify_eraseblock_ff(i); + if (err) + return err; + if (i % 256 == 0) + pr_info("verified up to eraseblock %u\n", i); + cond_resched(); + } + pr_info("verified %u eraseblocks\n", i); + return 0; +} + +static int is_block_bad(int ebnum) +{ + loff_t addr = ebnum * mtd->erasesize; + int ret; + + ret = mtd_block_isbad(mtd, addr); + if (ret) + pr_info("block %d is bad\n", ebnum); + return ret; +} + +static int scan_for_bad_eraseblocks(void) +{ + int i, bad = 0; + + bbt = kzalloc(ebcnt, GFP_KERNEL); + if (!bbt) { + pr_err("error: cannot allocate memory\n"); + return -ENOMEM; + } + + pr_info("scanning for bad eraseblocks\n"); + for (i = 0; i < ebcnt; ++i) { + bbt[i] = is_block_bad(i) ? 1 : 0; + if (bbt[i]) + bad += 1; + cond_resched(); + } + pr_info("scanned %d eraseblocks, %d are bad\n", i, bad); + return 0; +} + +static int __init mtd_subpagetest_init(void) +{ + int err = 0; + uint32_t i; + uint64_t tmp; + + printk(KERN_INFO "\n"); + printk(KERN_INFO "=================================================\n"); + + if (dev < 0) { + pr_info("Please specify a valid mtd-device via module parameter\n"); + pr_crit("CAREFUL: This test wipes all data on the specified MTD device!\n"); + return -EINVAL; + } + + pr_info("MTD device: %d\n", dev); + + mtd = get_mtd_device(NULL, dev); + if (IS_ERR(mtd)) { + err = PTR_ERR(mtd); + pr_err("error: cannot get MTD device\n"); + return err; + } + + if (mtd->type != MTD_NANDFLASH) { + pr_info("this test requires NAND flash\n"); + goto out; + } + + subpgsize = mtd->writesize >> mtd->subpage_sft; + tmp = mtd->size; + do_div(tmp, mtd->erasesize); + ebcnt = tmp; + pgcnt = mtd->erasesize / mtd->writesize; + + pr_info("MTD device size %llu, eraseblock size %u, " + "page size %u, subpage size %u, count of eraseblocks %u, " + "pages per eraseblock %u, OOB size %u\n", + (unsigned long long)mtd->size, mtd->erasesize, + mtd->writesize, subpgsize, ebcnt, pgcnt, mtd->oobsize); + + err = -ENOMEM; + bufsize = subpgsize * 32; + writebuf = kmalloc(bufsize, GFP_KERNEL); + if (!writebuf) { + pr_info("error: cannot allocate memory\n"); + goto out; + } + readbuf = kmalloc(bufsize, GFP_KERNEL); + if (!readbuf) { + pr_info("error: cannot allocate memory\n"); + goto out; + } + + err = scan_for_bad_eraseblocks(); + if (err) + goto out; + + err = erase_whole_device(); + if (err) + goto out; + + pr_info("writing whole device\n"); + prandom_seed_state(&rnd_state, 1); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = write_eraseblock(i); + if (unlikely(err)) + goto out; + if (i % 256 == 0) + pr_info("written up to eraseblock %u\n", i); + cond_resched(); + } + pr_info("written %u eraseblocks\n", i); + + prandom_seed_state(&rnd_state, 1); + pr_info("verifying all eraseblocks\n"); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = verify_eraseblock(i); + if (unlikely(err)) + goto out; + if (i % 256 == 0) + pr_info("verified up to eraseblock %u\n", i); + cond_resched(); + } + pr_info("verified %u eraseblocks\n", i); + + err = erase_whole_device(); + if (err) + goto out; + + err = verify_all_eraseblocks_ff(); + if (err) + goto out; + + /* Write all eraseblocks */ + prandom_seed_state(&rnd_state, 3); + pr_info("writing whole device\n"); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = write_eraseblock2(i); + if (unlikely(err)) + goto out; + if (i % 256 == 0) + pr_info("written up to eraseblock %u\n", i); + cond_resched(); + } + pr_info("written %u eraseblocks\n", i); + + /* Check all eraseblocks */ + prandom_seed_state(&rnd_state, 3); + pr_info("verifying all eraseblocks\n"); + for (i = 0; i < ebcnt; ++i) { + if (bbt[i]) + continue; + err = verify_eraseblock2(i); + if (unlikely(err)) + goto out; + if (i % 256 == 0) + pr_info("verified up to eraseblock %u\n", i); + cond_resched(); + } + pr_info("verified %u eraseblocks\n", i); + + err = erase_whole_device(); + if (err) + goto out; + + err = verify_all_eraseblocks_ff(); + if (err) + goto out; + + pr_info("finished with %d errors\n", errcnt); + +out: + kfree(bbt); + kfree(readbuf); + kfree(writebuf); + put_mtd_device(mtd); + if (err) + pr_info("error %d occurred\n", err); + printk(KERN_INFO "=================================================\n"); + return err; +} +module_init(mtd_subpagetest_init); + +static void __exit mtd_subpagetest_exit(void) +{ + return; +} +module_exit(mtd_subpagetest_exit); + +MODULE_DESCRIPTION("Subpage test module"); +MODULE_AUTHOR("Adrian Hunter"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/tests/mtd_torturetest.c b/drivers/mtd/tests/mtd_torturetest.c new file mode 100644 index 00000000..3a9f6a6a --- /dev/null +++ b/drivers/mtd/tests/mtd_torturetest.c @@ -0,0 +1,535 @@ +/* + * Copyright (C) 2006-2008 Artem Bityutskiy + * Copyright (C) 2006-2008 Jarkko Lavinen + * Copyright (C) 2006-2008 Adrian Hunter + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; see the file COPYING. If not, write to the Free Software + * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * Authors: Artem Bityutskiy, Jarkko Lavinen, Adria Hunter + * + * WARNING: this test program may kill your flash and your device. Do not + * use it unless you know what you do. Authors are not responsible for any + * damage caused by this program. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/err.h> +#include <linux/mtd/mtd.h> +#include <linux/slab.h> +#include <linux/sched.h> + +#define RETRIES 3 + +static int eb = 8; +module_param(eb, int, S_IRUGO); +MODULE_PARM_DESC(eb, "eraseblock number within the selected MTD device"); + +static int ebcnt = 32; +module_param(ebcnt, int, S_IRUGO); +MODULE_PARM_DESC(ebcnt, "number of consecutive eraseblocks to torture"); + +static int pgcnt; +module_param(pgcnt, int, S_IRUGO); +MODULE_PARM_DESC(pgcnt, "number of pages per eraseblock to torture (0 => all)"); + +static int dev = -EINVAL; +module_param(dev, int, S_IRUGO); +MODULE_PARM_DESC(dev, "MTD device number to use"); + +static int gran = 512; +module_param(gran, int, S_IRUGO); +MODULE_PARM_DESC(gran, "how often the status information should be printed"); + +static int check = 1; +module_param(check, int, S_IRUGO); +MODULE_PARM_DESC(check, "if the written data should be checked"); + +static unsigned int cycles_count; +module_param(cycles_count, uint, S_IRUGO); +MODULE_PARM_DESC(cycles_count, "how many erase cycles to do " + "(infinite by default)"); + +static struct mtd_info *mtd; + +/* This buffer contains 0x555555...0xAAAAAA... pattern */ +static unsigned char *patt_5A5; +/* This buffer contains 0xAAAAAA...0x555555... pattern */ +static unsigned char *patt_A5A; +/* This buffer contains all 0xFF bytes */ +static unsigned char *patt_FF; +/* This a temporary buffer is use when checking data */ +static unsigned char *check_buf; +/* How many erase cycles were done */ +static unsigned int erase_cycles; + +static int pgsize; +static struct timeval start, finish; + +static void report_corrupt(unsigned char *read, unsigned char *written); + +static inline void start_timing(void) +{ + do_gettimeofday(&start); +} + +static inline void stop_timing(void) +{ + do_gettimeofday(&finish); +} + +/* + * Erase eraseblock number @ebnum. + */ +static inline int erase_eraseblock(int ebnum) +{ + int err; + struct erase_info ei; + loff_t addr = ebnum * mtd->erasesize; + + memset(&ei, 0, sizeof(struct erase_info)); + ei.mtd = mtd; + ei.addr = addr; + ei.len = mtd->erasesize; + + err = mtd_erase(mtd, &ei); + if (err) { + pr_err("error %d while erasing EB %d\n", err, ebnum); + return err; + } + + if (ei.state == MTD_ERASE_FAILED) { + pr_err("some erase error occurred at EB %d\n", + ebnum); + return -EIO; + } + + return 0; +} + +/* + * Check that the contents of eraseblock number @enbum is equivalent to the + * @buf buffer. + */ +static inline int check_eraseblock(int ebnum, unsigned char *buf) +{ + int err, retries = 0; + size_t read; + loff_t addr = ebnum * mtd->erasesize; + size_t len = mtd->erasesize; + + if (pgcnt) { + addr = (ebnum + 1) * mtd->erasesize - pgcnt * pgsize; + len = pgcnt * pgsize; + } + +retry: + err = mtd_read(mtd, addr, len, &read, check_buf); + if (mtd_is_bitflip(err)) + pr_err("single bit flip occurred at EB %d " + "MTD reported that it was fixed.\n", ebnum); + else if (err) { + pr_err("error %d while reading EB %d, " + "read %zd\n", err, ebnum, read); + return err; + } + + if (read != len) { + pr_err("failed to read %zd bytes from EB %d, " + "read only %zd, but no error reported\n", + len, ebnum, read); + return -EIO; + } + + if (memcmp(buf, check_buf, len)) { + pr_err("read wrong data from EB %d\n", ebnum); + report_corrupt(check_buf, buf); + + if (retries++ < RETRIES) { + /* Try read again */ + yield(); + pr_info("re-try reading data from EB %d\n", + ebnum); + goto retry; + } else { + pr_info("retried %d times, still errors, " + "give-up\n", RETRIES); + return -EINVAL; + } + } + + if (retries != 0) + pr_info("only attempt number %d was OK (!!!)\n", + retries); + + return 0; +} + +static inline int write_pattern(int ebnum, void *buf) +{ + int err; + size_t written; + loff_t addr = ebnum * mtd->erasesize; + size_t len = mtd->erasesize; + + if (pgcnt) { + addr = (ebnum + 1) * mtd->erasesize - pgcnt * pgsize; + len = pgcnt * pgsize; + } + err = mtd_write(mtd, addr, len, &written, buf); + if (err) { + pr_err("error %d while writing EB %d, written %zd" + " bytes\n", err, ebnum, written); + return err; + } + if (written != len) { + pr_info("written only %zd bytes of %zd, but no error" + " reported\n", written, len); + return -EIO; + } + + return 0; +} + +static int __init tort_init(void) +{ + int err = 0, i, infinite = !cycles_count; + int *bad_ebs; + + printk(KERN_INFO "\n"); + printk(KERN_INFO "=================================================\n"); + pr_info("Warning: this program is trying to wear out your " + "flash, stop it if this is not wanted.\n"); + + if (dev < 0) { + pr_info("Please specify a valid mtd-device via module parameter\n"); + pr_crit("CAREFUL: This test wipes all data on the specified MTD device!\n"); + return -EINVAL; + } + + pr_info("MTD device: %d\n", dev); + pr_info("torture %d eraseblocks (%d-%d) of mtd%d\n", + ebcnt, eb, eb + ebcnt - 1, dev); + if (pgcnt) + pr_info("torturing just %d pages per eraseblock\n", + pgcnt); + pr_info("write verify %s\n", check ? "enabled" : "disabled"); + + mtd = get_mtd_device(NULL, dev); + if (IS_ERR(mtd)) { + err = PTR_ERR(mtd); + pr_err("error: cannot get MTD device\n"); + return err; + } + + if (mtd->writesize == 1) { + pr_info("not NAND flash, assume page size is 512 " + "bytes.\n"); + pgsize = 512; + } else + pgsize = mtd->writesize; + + if (pgcnt && (pgcnt > mtd->erasesize / pgsize || pgcnt < 0)) { + pr_err("error: invalid pgcnt value %d\n", pgcnt); + goto out_mtd; + } + + err = -ENOMEM; + patt_5A5 = kmalloc(mtd->erasesize, GFP_KERNEL); + if (!patt_5A5) + goto out_mtd; + + patt_A5A = kmalloc(mtd->erasesize, GFP_KERNEL); + if (!patt_A5A) + goto out_patt_5A5; + + patt_FF = kmalloc(mtd->erasesize, GFP_KERNEL); + if (!patt_FF) + goto out_patt_A5A; + + check_buf = kmalloc(mtd->erasesize, GFP_KERNEL); + if (!check_buf) + goto out_patt_FF; + + bad_ebs = kcalloc(ebcnt, sizeof(*bad_ebs), GFP_KERNEL); + if (!bad_ebs) + goto out_check_buf; + + err = 0; + + /* Initialize patterns */ + memset(patt_FF, 0xFF, mtd->erasesize); + for (i = 0; i < mtd->erasesize / pgsize; i++) { + if (!(i & 1)) { + memset(patt_5A5 + i * pgsize, 0x55, pgsize); + memset(patt_A5A + i * pgsize, 0xAA, pgsize); + } else { + memset(patt_5A5 + i * pgsize, 0xAA, pgsize); + memset(patt_A5A + i * pgsize, 0x55, pgsize); + } + } + + /* + * Check if there is a bad eraseblock among those we are going to test. + */ + if (mtd_can_have_bb(mtd)) { + for (i = eb; i < eb + ebcnt; i++) { + err = mtd_block_isbad(mtd, (loff_t)i * mtd->erasesize); + + if (err < 0) { + pr_info("block_isbad() returned %d " + "for EB %d\n", err, i); + goto out; + } + + if (err) { + pr_err("EB %d is bad. Skip it.\n", i); + bad_ebs[i - eb] = 1; + } + } + } + + start_timing(); + while (1) { + int i; + void *patt; + + /* Erase all eraseblocks */ + for (i = eb; i < eb + ebcnt; i++) { + if (bad_ebs[i - eb]) + continue; + err = erase_eraseblock(i); + if (err) + goto out; + cond_resched(); + } + + /* Check if the eraseblocks contain only 0xFF bytes */ + if (check) { + for (i = eb; i < eb + ebcnt; i++) { + if (bad_ebs[i - eb]) + continue; + err = check_eraseblock(i, patt_FF); + if (err) { + pr_info("verify failed" + " for 0xFF... pattern\n"); + goto out; + } + cond_resched(); + } + } + + /* Write the pattern */ + for (i = eb; i < eb + ebcnt; i++) { + if (bad_ebs[i - eb]) + continue; + if ((eb + erase_cycles) & 1) + patt = patt_5A5; + else + patt = patt_A5A; + err = write_pattern(i, patt); + if (err) + goto out; + cond_resched(); + } + + /* Verify what we wrote */ + if (check) { + for (i = eb; i < eb + ebcnt; i++) { + if (bad_ebs[i - eb]) + continue; + if ((eb + erase_cycles) & 1) + patt = patt_5A5; + else + patt = patt_A5A; + err = check_eraseblock(i, patt); + if (err) { + pr_info("verify failed for %s" + " pattern\n", + ((eb + erase_cycles) & 1) ? + "0x55AA55..." : "0xAA55AA..."); + goto out; + } + cond_resched(); + } + } + + erase_cycles += 1; + + if (erase_cycles % gran == 0) { + long ms; + + stop_timing(); + ms = (finish.tv_sec - start.tv_sec) * 1000 + + (finish.tv_usec - start.tv_usec) / 1000; + pr_info("%08u erase cycles done, took %lu " + "milliseconds (%lu seconds)\n", + erase_cycles, ms, ms / 1000); + start_timing(); + } + + if (!infinite && --cycles_count == 0) + break; + } +out: + + pr_info("finished after %u erase cycles\n", + erase_cycles); + kfree(bad_ebs); +out_check_buf: + kfree(check_buf); +out_patt_FF: + kfree(patt_FF); +out_patt_A5A: + kfree(patt_A5A); +out_patt_5A5: + kfree(patt_5A5); +out_mtd: + put_mtd_device(mtd); + if (err) + pr_info("error %d occurred during torturing\n", err); + printk(KERN_INFO "=================================================\n"); + return err; +} +module_init(tort_init); + +static void __exit tort_exit(void) +{ + return; +} +module_exit(tort_exit); + +static int countdiffs(unsigned char *buf, unsigned char *check_buf, + unsigned offset, unsigned len, unsigned *bytesp, + unsigned *bitsp); +static void print_bufs(unsigned char *read, unsigned char *written, int start, + int len); + +/* + * Report the detailed information about how the read EB differs from what was + * written. + */ +static void report_corrupt(unsigned char *read, unsigned char *written) +{ + int i; + int bytes, bits, pages, first; + int offset, len; + size_t check_len = mtd->erasesize; + + if (pgcnt) + check_len = pgcnt * pgsize; + + bytes = bits = pages = 0; + for (i = 0; i < check_len; i += pgsize) + if (countdiffs(written, read, i, pgsize, &bytes, + &bits) >= 0) + pages++; + + pr_info("verify fails on %d pages, %d bytes/%d bits\n", + pages, bytes, bits); + pr_info("The following is a list of all differences between" + " what was read from flash and what was expected\n"); + + for (i = 0; i < check_len; i += pgsize) { + cond_resched(); + bytes = bits = 0; + first = countdiffs(written, read, i, pgsize, &bytes, + &bits); + if (first < 0) + continue; + + printk("-------------------------------------------------------" + "----------------------------------\n"); + + pr_info("Page %zd has %d bytes/%d bits failing verify," + " starting at offset 0x%x\n", + (mtd->erasesize - check_len + i) / pgsize, + bytes, bits, first); + + offset = first & ~0x7; + len = ((first + bytes) | 0x7) + 1 - offset; + + print_bufs(read, written, offset, len); + } +} + +static void print_bufs(unsigned char *read, unsigned char *written, int start, + int len) +{ + int i = 0, j1, j2; + char *diff; + + printk("Offset Read Written\n"); + while (i < len) { + printk("0x%08x: ", start + i); + diff = " "; + for (j1 = 0; j1 < 8 && i + j1 < len; j1++) { + printk(" %02x", read[start + i + j1]); + if (read[start + i + j1] != written[start + i + j1]) + diff = "***"; + } + + while (j1 < 8) { + printk(" "); + j1 += 1; + } + + printk(" %s ", diff); + + for (j2 = 0; j2 < 8 && i + j2 < len; j2++) + printk(" %02x", written[start + i + j2]); + printk("\n"); + i += 8; + } +} + +/* + * Count the number of differing bytes and bits and return the first differing + * offset. + */ +static int countdiffs(unsigned char *buf, unsigned char *check_buf, + unsigned offset, unsigned len, unsigned *bytesp, + unsigned *bitsp) +{ + unsigned i, bit; + int first = -1; + + for (i = offset; i < offset + len; i++) + if (buf[i] != check_buf[i]) { + first = i; + break; + } + + while (i < offset + len) { + if (buf[i] != check_buf[i]) { + (*bytesp)++; + bit = 1; + while (bit < 256) { + if ((buf[i] & bit) != (check_buf[i] & bit)) + (*bitsp)++; + bit <<= 1; + } + } + i++; + } + + return first; +} + +MODULE_DESCRIPTION("Eraseblock torturing module"); +MODULE_AUTHOR("Artem Bityutskiy, Jarkko Lavinen, Adrian Hunter"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/tests/sprd_mtdtest/Makefile b/drivers/mtd/tests/sprd_mtdtest/Makefile new file mode 100755 index 00000000..59736b2b --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/Makefile @@ -0,0 +1 @@ +obj-y += nandflash_agetest/ nandflash_bitfliptest/ nandflash_ecctest/ nandflash_postest/ nandflash_stdtest/
\ No newline at end of file diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_agetest/Makefile b/drivers/mtd/tests/sprd_mtdtest/nandflash_agetest/Makefile new file mode 100755 index 00000000..f18a8597 --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_agetest/Makefile @@ -0,0 +1 @@ +obj-m += nandflash_agetest.o diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_agetest/nandflash_agetest.c b/drivers/mtd/tests/sprd_mtdtest/nandflash_agetest/nandflash_agetest.c new file mode 100755 index 00000000..5963a6ba --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_agetest/nandflash_agetest.c @@ -0,0 +1,250 @@ +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/types.h> +#include <linux/moduleparam.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> +#include <linux/delay.h> +#include <asm/div64.h> +#include <linux/err.h> +#include <linux/random.h> +#include <linux/vmalloc.h> + +#undef pr_fmt +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +static int dev = 4; +module_param(dev, int, S_IRUGO); +MODULE_PARM_DESC(dev, "MTD device number to use"); + +static int ebcnt = 0; +static int pgcnt = 0; +static unsigned char *bbt = NULL; +static struct mtd_info *mtd = NULL; +static struct rnd_state rnd_state = {0}; + +static int agetest_erase_eraseblock(unsigned int ebnum) +{ + int err = 0; + struct erase_info ei = {0}; + + ei.mtd = mtd; + ei.addr = ebnum * mtd->erasesize; + ei.len = mtd->erasesize; + + err = mtd_erase(mtd, &ei); + if (err) { + pr_err("err %d while erasing EB %d\n", err, ebnum); + return err; + } + + if (ei.state == MTD_ERASE_FAILED) { + pr_err("some erase error occurred at EB %d\n", ebnum); + return -EIO; + } + + return 0; +} + +static int agetest_scan_bad_block(void) +{ + unsigned int i = 0, bad = 0; + + bbt = (unsigned char *)vmalloc(ebcnt); + if (!bbt) { + pr_info("error: cannot allocate memory\n"); + return -ENOMEM; + } + + pr_info("scanning for bad eraseblocks first\n"); + for (i = 0; i < ebcnt; ++i) { + bbt[i] = mtd_block_isbad(mtd, i * mtd->erasesize) ? 1 : 0; + if (bbt[i]) + bad += 1; + cond_resched(); + } + pr_info("scanned %d eraseblocks, %d are bad\n", ebcnt, bad); + return 0; +} + +static int nandflash_agetest(void) +{ + int err = 0; + loff_t addr = 0; + unsigned int test_blk = 10; + unsigned int op = 0; + unsigned char *readbuf = NULL; + unsigned char *writebuf = NULL; + unsigned int written = 0, read = 0; + unsigned int continue_err = 0; + unsigned int erase_time = 0; + + readbuf = vmalloc(mtd->writesize); + if(!readbuf) { + pr_err("%s, alloc readbuf failed!\n", __func__); + err = -ENOMEM; + goto out; + } + + writebuf = vmalloc(mtd->writesize); + if(!writebuf) { + pr_err("%s, alloc writebuf failed!\n", __func__); + err = -ENOMEM; + goto out; + } + + while((test_blk < ebcnt) && bbt[test_blk]) { + test_blk ++; + } + + if(test_blk >= ebcnt) { + pr_err("The whole mtd_partion are bad!\n"); + err = -EINVAL; + goto out; + } + + pr_info("Begin to make block %d as bad!\n", test_blk); + addr = test_blk * mtd->erasesize; + prandom_seed_state(&rnd_state, 1); + prandom_bytes_state(&rnd_state, writebuf, mtd->writesize); + err = agetest_erase_eraseblock(test_blk); + if(err) { + pr_err("the first erase failed at addr: 0x%.8x, err: %d\n", (unsigned int)addr, err); + goto out; + } + + while(1) { + if(signal_pending(current)) + goto out; + err = mtd_write(mtd, addr, mtd->writesize, &written, writebuf); + if(err || written != mtd->writesize) { + pr_err("write failed at addr: 0x%.8x, err: %d, written: %d, time: %d\n", (unsigned int)addr, err, written, op); + goto erase; + } + + err = mtd_read(mtd, addr, mtd->writesize, &read, readbuf); + if(err || read != mtd->writesize) { + pr_err("read failed at addr: 0x%.8x, err: %d, read: %d, time: %d\n", (unsigned int)addr, err, read, op); + goto erase; + } + + if(memcmp(readbuf, writebuf, mtd->writesize) != 0) { + pr_err("verify failed at addr: 0x%.8x!", (unsigned int)addr); + goto erase; + } + +erase: + err = agetest_erase_eraseblock(test_blk); + if(err) { + pr_err("erase failed at addr: 0x%.8x, err: %d, time: %d\n", (unsigned int)addr, err, op); + break; + } + op += 1; + if(op % 1024 == 0) + pr_info("we have erased %d times!\n", op); + } + +/*make sure the block has been erased as bad block*/ + while(1) { + if(signal_pending(current)) + break; + err = mtd_write(mtd, addr, mtd->writesize, &written, writebuf); + err = agetest_erase_eraseblock(test_blk); + if(err) { + continue_err ++; + if(continue_err >= 0x1000) { + pr_info("after %d times continue erase, the block has been erased as bad block!", erase_time); + break; + } + if( continue_err % 100 == 0) + pr_info("the continue_err is %d!", continue_err); + } else { + if(continue_err) + pr_info("the continue_err may be clean, old value is %d\n", continue_err); + continue_err = 0; + } + erase_time ++; + if( erase_time % 1024 == 0) + pr_info("the erase_time is %d!", erase_time); + } + pr_info("mark block %d as bad!\n", test_blk); + mtd->_block_markbad(mtd, addr); + err = 0; + +out: + vfree(readbuf); + vfree(writebuf); + pr_info("agetest finished, %d(%d) operations done!\n", op, erase_time); + return err; +} + +static int __init nandflash_agetest_init(void) +{ + int err = 0; + uint64_t tmp = 0; + + pr_info(KERN_INFO "\n"); + pr_info(KERN_INFO "=================================================\n"); + + if (dev < 0) { + pr_info("Please specify a valid mtd-device via module parameter\n"); + return -EINVAL; + } + + pr_info("MTD device: %d\n", dev); + + mtd = get_mtd_device(NULL, dev); + if (IS_ERR(mtd)) { + err = PTR_ERR(mtd); + pr_info("error: cannot get MTD device\n"); + return err; + } + if (mtd->type != MTD_NANDFLASH) { + pr_info("this test requires NAND flash\n"); + goto out; + } + + tmp = mtd->size; + do_div(tmp, mtd->erasesize); + ebcnt = tmp; + pgcnt = mtd->erasesize / mtd->writesize; + + pr_info("MTD device size %llu, eraseblock size %u, " + "page size %u, count of eraseblocks %u, pages per " + "eraseblock %u, OOB size %u\n", + (unsigned long long)mtd->size, mtd->erasesize, + mtd->writesize, ebcnt, pgcnt, mtd->oobsize); + + err = agetest_scan_bad_block(); + if (err) + goto out; + + err = nandflash_agetest(); + if(err) { + pr_err("stresstest failed!\n"); + goto out; + } + +out: + pr_info(KERN_INFO "=================================================\n"); + if(bbt != NULL) + vfree(bbt); + put_mtd_device(mtd); + + return -1; +} + +static void __exit nandflash_agetest_exit(void) +{ + return; +} + +module_init(nandflash_agetest_init); + +module_exit(nandflash_agetest_exit); + +MODULE_DESCRIPTION("mtd_age_test"); +MODULE_AUTHOR("ming.tang@spreadtrum.com"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_agetest/readme.txt b/drivers/mtd/tests/sprd_mtdtest/nandflash_agetest/readme.txt new file mode 100755 index 00000000..91a5977f --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_agetest/readme.txt @@ -0,0 +1,15 @@ +agetest， 即老化测试，用于获取单个nandflash 擦除块的寿命。该测试需要的时间较长，一般需要5小时以上，由nandflash的特性决定。为了确保被测试擦除块彻底被擦坏，需要使用强制擦除接口（将/sys/kernel/debug/nfc_base/allowEraseBadBlock置为1）。
+
+参数说明：
+dev:用于指定测试使用的mtd分区，默认值为4
+
+使用方法：
+1 将/sys/kernel/debug/nfc_base/allowEraseBadBlock置为1；
+cmd:echo "1" > /sys/kernel/debug/nfc_base/allowEraseBadBlock
+2 root后加载测试模块并传入参数，测试结果通过kernel log输出，通过erase_time来衡量某款nandflash的特性;
+cmd:insmod nandflash_agetest.ko dev=4
+3 将/sys/kernel/debug/nfc_base/allowEraseBadBlock置为0。
+cmd:echo "0" > /sys/kernel/debug/nfc_base/allowEraseBadBlock
+
+注意：
+每进行一次测试，会增加一个bad block。
\ No newline at end of file diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_bitfliptest/Makefile b/drivers/mtd/tests/sprd_mtdtest/nandflash_bitfliptest/Makefile new file mode 100755 index 00000000..ba65c86b --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_bitfliptest/Makefile @@ -0,0 +1 @@ +obj-m += nandflash_bitfliptest.o diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_bitfliptest/nandflash_bitfliptest.c b/drivers/mtd/tests/sprd_mtdtest/nandflash_bitfliptest/nandflash_bitfliptest.c new file mode 100755 index 00000000..a7c926bb --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_bitfliptest/nandflash_bitfliptest.c @@ -0,0 +1,364 @@ +#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <asm/uaccess.h>
+#include <linux/types.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mtd/mtd.h>
+#include <linux/delay.h>
+#include <asm/div64.h>
+#include <linux/err.h>
+#include <linux/sched.h>
+#include <linux/random.h>
+#include <linux/vmalloc.h>
+
+#undef pr_fmt
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+struct mtd_part {
+ struct mtd_info mtd;
+ struct mtd_info *master;
+ loff_t offset;
+ struct list_head list;
+};
+static int dev = 4;
+static int threshold = 100;
+module_param(dev, int, S_IRUGO);
+module_param(threshold, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+MODULE_PARM_DESC(threshold, "the threshold of bit-flip num");
+
+static struct mtd_info *mtd = NULL;
+static struct mtd_part *mtd_part = NULL;
+static unsigned char *bbt = NULL;
+
+static int ebcnt;
+static int pgcnt;
+static int errcnt;
+static int rdcnt;
+static int rdpgcnt;
+static int pgsize;
+static int bufsize;
+static int *offsets;
+static unsigned char *readbuf;
+static unsigned char * writebuf;
+
+static int mtd_test_erase_eraseblock(int ebnum, int blocks)
+{
+ int err = 0;
+ struct erase_info ei = {0};
+
+ if(blocks == 0)
+ blocks = 1;
+
+ ei.mtd = mtd;
+ ei.addr = ebnum * mtd->erasesize;
+ ei.len = mtd->erasesize * blocks;
+
+ err = mtd_erase(mtd, &ei);
+ if (err) {
+ pr_err("error %d while erasing EB %d\n", err, ebnum);
+ return err;
+ }
+
+ if (ei.state == MTD_ERASE_FAILED) {
+ pr_err("Some erase error occurred at EB %d\n", ebnum);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int mtd_test_erase_whole_device(void)
+{
+ int err = 0;
+ unsigned int i = 0;
+
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = mtd_test_erase_eraseblock(i, 0);
+ if (err)
+ return err;
+ cond_resched();
+ }
+ return 0;
+}
+
+static int mtd_test_scan_bad_block(void)
+{
+ unsigned int i = 0, bad = 0;
+
+ bbt = (unsigned char *)vmalloc(ebcnt);
+ if (!bbt) {
+ pr_info("error: cannot allocate memory\n");
+ return -ENOMEM;
+ }
+
+ pr_info("scanning for bad eraseblocks first\n");
+ for (i = 0; i < ebcnt; ++i) {
+ bbt[i] = mtd_block_isbad(mtd, i * mtd->erasesize) ? 1 : 0;
+ if (bbt[i])
+ bad += 1;
+ cond_resched();
+ }
+ pr_info("scanned %d eraseblocks, %d are bad\n", ebcnt, bad);
+ return 0;
+}
+
+static int bitfliptest_rand_eb(void)
+{
+ unsigned int eb = 0;
+
+again:
+ eb = prandom_u32();
+ /* Read or write up 2 eraseblocks at a time - hence 'ebcnt - 1' */
+ eb %= (ebcnt - 1);
+ if (bbt[eb])
+ goto again;
+ return eb;
+}
+
+static int bitfliptest_rand_offs(void)
+{
+ unsigned int offs = 0;
+
+ offs = prandom_u32();
+ offs %= bufsize;
+ return offs;
+}
+
+static int bitfliptest_rand_len(int offs)
+{
+ unsigned int len = 0;
+
+ len = prandom_u32();
+ len %= (bufsize - offs);
+ return len;
+}
+
+static int bitfliptest_do_read(void)
+{
+ int err = 0;
+ size_t read = 0;
+ loff_t addr = 0;
+ unsigned int corrected_num = 0;
+ unsigned int eb = bitfliptest_rand_eb();
+ unsigned int offs = bitfliptest_rand_offs();
+ unsigned int len = bitfliptest_rand_len(offs);
+ struct mtd_ecc_stats stats= {0};
+
+ if (bbt[eb + 1]) {
+ if (offs >= mtd->erasesize)
+ offs -= mtd->erasesize;
+ if (offs + len > mtd->erasesize)
+ len = mtd->erasesize - offs;
+ }
+ addr = eb * mtd->erasesize + offs;
+
+// pr_info("read, addr: 0x%.8x len: %d\n", (unsigned int)addr, len);
+ stats = mtd_part->master->ecc_stats;
+ err = mtd_read(mtd, addr, len, &read, readbuf);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (unlikely(err || read != len)) {
+ pr_err("error: read failed at 0x%llx, err:%d len: %dread:%d\n",
+ (long long)addr, err, len, read);
+ if (!err)
+ err = -EINVAL;
+ return err;
+ }
+ corrected_num = mtd_part->master->ecc_stats.corrected - stats.corrected;
+ if(corrected_num != 0) {
+ errcnt += corrected_num;
+ pr_info("When we read addr:0x%.8x:0x%.8x, we found %d(%d) bit-flip!\n", (unsigned int)addr, len, corrected_num, errcnt);
+ }
+ rdpgcnt += len/mtd->writesize;
+ rdcnt ++;
+ return 0;
+}
+
+static int bitfliptest_do_write(void)
+{
+ int err = 0;
+ loff_t addr = 0;
+ size_t written = 0;
+ int eb = bitfliptest_rand_eb();
+ unsigned int offs = 0, len = 0;
+
+ offs = offsets[eb];
+ if (offs >= mtd->erasesize) {
+ err = mtd_test_erase_eraseblock(eb, 0);
+ if (err)
+ return err;
+ offs = offsets[eb] = 0;
+ }
+ len = bitfliptest_rand_len(offs);
+ len = ((len + pgsize - 1) / pgsize) * pgsize;
+ if (offs + len > mtd->erasesize) {
+ if (bbt[eb + 1])
+ len = mtd->erasesize - offs;
+ else {
+// pr_info("erase, block: %d\n", eb + 1);
+ err = mtd_test_erase_eraseblock(eb + 1, 0);
+ if (err)
+ return err;
+ offsets[eb + 1] = 0;
+ }
+ }
+ addr = eb * mtd->erasesize + offs;
+// pr_info("write, addr: 0x%.8x len: %d\n", (unsigned int)addr, len);
+ err = mtd_write(mtd, addr, len, &written, writebuf);
+ if (unlikely(err || written != len)) {
+ pr_err("error: write failed at 0x%llx\n",
+ (long long)addr);
+ if (!err)
+ err = -EINVAL;
+ return err;
+ }
+ offs += len;
+ while (offs > mtd->erasesize) {
+ offsets[eb++] = mtd->erasesize;
+ offs -= mtd->erasesize;
+ }
+ offsets[eb] = offs;
+ return 0;
+}
+
+static int bitfliptest_do_operation(void)
+{
+ if (prandom_u32() & 1) {
+ return bitfliptest_do_read();
+ } else {
+ return bitfliptest_do_write();
+ }
+}
+
+static int mtd_test_bitfliptest(void)
+{
+ int err = 0;
+ unsigned int i = 0, op = 0;
+
+ bufsize = mtd->erasesize * 2;
+ readbuf = vmalloc(bufsize);
+ if(!readbuf) {
+ pr_err("%s, alloc readbuf failed!\n", __func__);
+ return -ENOMEM;
+ }
+ writebuf = vmalloc(bufsize);
+ if(!writebuf) {
+ pr_err("%s, alloc writebuf failed!\n", __func__);
+ vfree(readbuf);
+ return -ENOMEM;
+ }
+ offsets = vmalloc(ebcnt * sizeof(int));
+ if(!offsets) {
+ pr_err("%s, alloc offsets failed!\n", __func__);
+ vfree(readbuf);
+ vfree(writebuf);
+ return -ENOMEM;
+ }
+ pr_info("bitfliptest begin!\n");
+
+ for (i = 0; i < ebcnt; i++)
+ offsets[i] = mtd->erasesize;
+ prandom_bytes(writebuf, bufsize);
+
+ err = mtd_test_erase_whole_device();
+ if(err)
+ goto out;
+
+ while(1) {
+ if ((op & 1023) == 0)
+ pr_info("%d operations done\n", op);
+ err = bitfliptest_do_operation();
+ if (err)
+ goto out;
+ if(errcnt >= threshold) {
+ pr_info("Test times: %d, read times: %d, read pages: %d, bit-flip: %d.\n", op, rdcnt, rdpgcnt, errcnt);
+ break;
+ }
+ cond_resched();
+ op += 1;
+ }
+
+out:
+ vfree(offsets);
+ vfree(readbuf);
+ vfree(writebuf);
+ pr_info("bitfliptest finished, %d operations done!\n", op);
+ return err;
+}
+
+static int __init nandflash_bitfliptest_init(void)
+{
+ int err = 0;
+ uint64_t tmp = 0;
+
+ pr_info(KERN_INFO "\n");
+ pr_info(KERN_INFO "=================================================\n");
+
+ if (dev < 0) {
+ pr_info("Please specify a valid mtd-device via module parameter\n");
+ return -EINVAL;
+ }
+
+ pr_info("MTD device: %d\n", dev);
+
+ mtd = get_mtd_device(NULL, dev);
+ if (IS_ERR(mtd)) {
+ err = PTR_ERR(mtd);
+ pr_info("error: cannot get MTD device\n");
+ return err;
+ }
+ mtd_part = (struct mtd_part *)mtd;
+
+ if (mtd->type != MTD_NANDFLASH) {
+ pr_info("this test requires NAND flash\n");
+ goto out;
+ }
+
+ tmp = mtd->size;
+ do_div(tmp, mtd->erasesize);
+ ebcnt = tmp;
+ pgcnt = mtd->erasesize / mtd->writesize;
+ pgsize = mtd->writesize;
+
+ pr_info("MTD device size %llu, eraseblock size %u, "
+ "page size %u, count of eraseblocks %u, pages per "
+ "eraseblock %u, OOB size %u\n",
+ (unsigned long long)mtd->size, mtd->erasesize,
+ mtd->writesize, ebcnt, pgcnt, mtd->oobsize);
+
+ err = mtd_test_scan_bad_block();
+ if (err)
+ goto out;
+
+ err = mtd_test_bitfliptest();
+ if(err) {
+ pr_err("bitfliptest failed!\n");
+ goto out;
+ }
+
+out:
+ pr_info(KERN_INFO "=================================================\n");
+ if(bbt != NULL)
+ vfree(bbt);
+ put_mtd_device(mtd);
+
+ return -1;
+}
+
+static void __exit nandflash_bitfliptest_exit(void)
+{
+ return;
+}
+
+module_init(nandflash_bitfliptest_init);
+module_exit(nandflash_bitfliptest_exit);
+
+MODULE_DESCRIPTION("mtd_bitflip_test");
+MODULE_AUTHOR("ming.tang@spreadtrum.com");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_bitfliptest/readme.txt b/drivers/mtd/tests/sprd_mtdtest/nandflash_bitfliptest/readme.txt new file mode 100755 index 00000000..760e164f --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_bitfliptest/readme.txt @@ -0,0 +1,9 @@ +bitfliptest——位翻转测试，用于测试当前系统在做数据存取时发生bit-flip的概率，测试时长由当前系统的稳定性和设定的阀值共同决定。
+
+参数说明：
+dev:用于指定测试使用的mtd分区，默认值为4
+threshold:用于指定bit-flip的阀值，即当bit-flip的总数达到阀值即会停止，默认值为100。
+
+使用方法：
+root后加载测试模块并传入参数，测试结果通过kernel log输出;
+cmd:insmod nandflash_bitfliptest.ko dev=4 threshold=100
\ No newline at end of file diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_ecctest/Makefile b/drivers/mtd/tests/sprd_mtdtest/nandflash_ecctest/Makefile new file mode 100755 index 00000000..3af72abe --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_ecctest/Makefile @@ -0,0 +1 @@ +obj-m += nandflash_ecctest.o diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_ecctest/nandflash_ecctest.c b/drivers/mtd/tests/sprd_mtdtest/nandflash_ecctest/nandflash_ecctest.c new file mode 100755 index 00000000..fcaf449c --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_ecctest/nandflash_ecctest.c @@ -0,0 +1,273 @@ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/init.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/vmalloc.h> +#include <linux/random.h> +#include <linux/mtd/mtd.h> +#include <linux/moduleparam.h> + +struct mtd_part { + struct mtd_info mtd; + struct mtd_info *master; + loff_t offset; + struct list_head list; +}; + +#define CBIT(v, n) ((v) & (1 << (n))) +#define BCLR(v, n) ((v) = (v) & ~(1 << (n))) + +static struct mtd_info *mtd = NULL; +static int dev = 4; +module_param(dev, int, S_IRUGO); +MODULE_PARM_DESC(dev, "MTD device number to use"); + +static int insert_biterror(unsigned char *buf) +{ + unsigned int bit = 0; + unsigned int byte = 0; + + while (byte < mtd->writesize) { + for (bit = 0; bit <= 7; bit++) { + if (CBIT(buf[byte], bit)) { + BCLR(buf[byte], bit); + pr_info("Inserted biterror @ %u/%u\n", byte, bit); + return 0; + } + } + byte++; + } + pr_err("biterror: Failed to find a '1' bit\n"); + return -EIO; +} + +static int erase_eraseblock(unsigned int ebnum) +{ + int err = 0; + struct erase_info ei = {0}; + + ei.mtd = mtd; + ei.addr = ebnum * mtd->erasesize; + ei.len = mtd->erasesize; + + err = mtd_erase(mtd, &ei); + if (err) { + pr_err("err %d while erasing EB %d\n", err, ebnum); + return err; + } + + if (ei.state == MTD_ERASE_FAILED) { + pr_err("some erase error occurred at EB %d\n", ebnum); + return -EIO; + } + + return 0; +} + +static int write_oob(loff_t offset, unsigned char *databuf, unsigned int len, unsigned char *oobbuf, unsigned int ooblen, unsigned int mode) +{ + struct mtd_oob_ops ops = {0}; + int err = 0; + + ops.mode = mode; + ops.len = len; + ops.retlen = 0; + ops.ooblen = ooblen; + ops.oobretlen = 0; + ops.ooboffs = 0; + ops.datbuf = databuf; + ops.oobbuf = oobbuf; + err = mtd->_write_oob(mtd, offset, &ops); + if (err || ops.oobretlen != ops.ooblen || ops.retlen != ops.len) { + pr_err("write address: 0x%.8x's failed, err:%d!", (unsigned int)offset, err); + if(err == 0) { + pr_err("expect:%d , %d real:%d, %d\n", ops.len, ops.ooblen, ops.retlen, ops.oobretlen); + err = -1; + } + } + + return err; +} + +static int read_oob(loff_t offset, unsigned char *databuf, unsigned int len, unsigned char *oobbuf, unsigned int ooblen, unsigned int mode) +{ + struct mtd_oob_ops ops = {0}; + int err = 0; + + ops.mode = mode; + ops.len = len; + ops.retlen = 0; + ops.ooblen = ooblen; + ops.oobretlen = 0; + ops.ooboffs = 0; + ops.datbuf = databuf; + ops.oobbuf = oobbuf; + err = mtd->_read_oob(mtd, offset, &ops); + if (err || ops.oobretlen != ops.ooblen || ops.retlen != ops.len) { + pr_err("read address: 0x%.8x failed, err:%d!\n", (unsigned int)offset, err); + if(err == 0) { + pr_err("expect:%d , %d real:%d, %d\n", ops.len, ops.ooblen, ops.retlen, ops.oobretlen); + err = -1; + } else if(err == -EUCLEAN) { + err = 0; + } + } + + return err; +} + +static int __init nandflash_ecctest_init(void) +{ + unsigned int read_len = 0; + int err = 0; + loff_t offset = 0; + unsigned int j = 0; + struct rnd_state rnd_state; + unsigned int corrected_num = 0; + unsigned char *oobbuf_w = NULL; + unsigned char *oobbuf_r = NULL; + unsigned char *pagebuf_r = NULL; + unsigned char *pagebuf_w = NULL; + unsigned char *pagebuf_v = NULL; + struct mtd_ecc_stats stats = {0}; + struct mtd_part *mtd_part = NULL; + + printk("\n"); + pr_info("--------------------------------------------------------------------------\n"); + /*prepare work*/ + mtd = get_mtd_device(NULL, 4); + if (IS_ERR(mtd)) { + err = PTR_ERR(mtd); + pr_err("Cannot get MTD device\n"); + return err; + } + + mtd_part = (struct mtd_part *)mtd; + + if(!mtd->_block_isbad || !mtd->_block_markbad || !mtd->_read_oob || !mtd->_write_oob || + !mtd->_read || !mtd->_write) { + pr_err("Some mtd's method may be NULL!"); + goto out; + } + + pagebuf_r = vmalloc(mtd->writesize); + oobbuf_r = vmalloc(mtd->oobsize); + pagebuf_w = vmalloc(mtd->writesize); + pagebuf_v = vmalloc(mtd->writesize); + oobbuf_w = vmalloc(mtd->oobsize); + if(!pagebuf_r || !oobbuf_r || !pagebuf_w || !pagebuf_v || !oobbuf_w) { + pr_err("Alloc buf failed!"); + goto out; + } + + //find a vailid block + while(offset < mtd->size) { + if(mtd->_block_isbad(mtd, offset)) { + offset += mtd->erasesize; + } else { + break; + } + } + + if(offset >= mtd->size) { + pr_err("The whole mtd_partion are bad!\n"); + goto out; + } + + err = erase_eraseblock(((long)offset)/mtd->erasesize); + if(err) { + pr_err("Erase failed at EB: %d\n", ((unsigned int)offset)/mtd->erasesize); + goto out; + } + pr_info("Erase block %d successfully!\n", ((unsigned int)offset)/mtd->erasesize); + + //prepare value + prandom_seed_state(&rnd_state, 1); + prandom_bytes_state(&rnd_state, oobbuf_w, mtd->oobsize); + prandom_bytes_state(&rnd_state, pagebuf_w, mtd->writesize); + memcpy(pagebuf_v, pagebuf_w, mtd->writesize); + + err = write_oob(offset, pagebuf_w, mtd->writesize, oobbuf_w, mtd->oobsize, MTD_OPS_PLACE_OOB); + if(err != 0) { + pr_err("1.1 write failed!\n"); + goto erase; + } + + err = read_oob(offset, pagebuf_r, mtd->writesize, oobbuf_r, mtd->oobsize, MTD_OPS_PLACE_OOB); + if(err != 0) { + pr_err("1.1 read failed!\n"); + goto erase; + } + + if(memcmp(pagebuf_v, pagebuf_r, mtd->writesize) != 0) { + pr_err("1.1 compare page failed!\n"); + goto erase; + } + memcpy(oobbuf_w, oobbuf_r, mtd->oobsize); + + for(j = 0; j < mtd->writesize * 8; j ++) + { + offset += mtd->writesize; + err = insert_biterror(pagebuf_w); + if(err) { + pr_err("Insert biterror failed!\n"); + goto erase; + } + pr_info("Insert %d bit-flip sucessfully!\n", j + 1); + + err = write_oob(offset, pagebuf_w, mtd->writesize, oobbuf_w, mtd->oobsize, MTD_OPS_RAW); + if(err != 0) { + pr_err("2.1 write failed!\n"); + goto erase; + } + + stats = mtd_part->master->ecc_stats; + err = read_oob(offset, pagebuf_r, mtd->writesize, oobbuf_r, mtd->oobsize, MTD_OPS_PLACE_OOB); + if(err != 0) { + pr_err("2.1 read failed!\n"); + break; + } + + if(memcmp(pagebuf_v, pagebuf_r, mtd->writesize) != 0) { + pr_err("2.2 compare page failed!\n"); + goto erase; + } + + corrected_num = mtd_part->master->ecc_stats.corrected - stats.corrected; + if(corrected_num != (j + 1)) { + pr_err("Bit-flip num is not match, expected:%d, really:%d\n", j + 1, corrected_num); + goto erase; + } + } + + pr_info("Test successfully, this system can corrected %d bit-flip at most!\n", j); +erase: + err = erase_eraseblock(((unsigned int)offset)/mtd->erasesize); + if(err) { + pr_err("1.3 erase failed at EB: %d\n", ((unsigned int)offset)/mtd->erasesize); + goto out; + } +out: + vfree(pagebuf_r); + vfree(oobbuf_r); + vfree(pagebuf_w); + vfree(oobbuf_w); + pr_info("--------------------------------------------------------------------------\n"); + return -1; +} + +static void __exit nandflash_ecctest_exit(void) +{ + put_mtd_device(mtd); + return; +} + +module_init(nandflash_ecctest_init); +module_exit(nandflash_ecctest_exit); + +MODULE_DESCRIPTION("Test ecc strength"); +MODULE_AUTHOR("ming.tang"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_ecctest/readme.txt b/drivers/mtd/tests/sprd_mtdtest/nandflash_ecctest/readme.txt new file mode 100755 index 00000000..ee9ba97f --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_ecctest/readme.txt @@ -0,0 +1,8 @@ +ecctest——纠错能力测试,用于获取当前系统实际纠错能力。
+
+参数说明：
+dev:用于指定测试使用的mtd分区，默认值为4
+
+使用方法：
+root后加载测试模块并传入参数，测试结果通过kernel log输出;
+cmd:insmod nandflash_ecctest.ko dev=4
\ No newline at end of file diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_postest/Makefile b/drivers/mtd/tests/sprd_mtdtest/nandflash_postest/Makefile new file mode 100755 index 00000000..b1b1b9ae --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_postest/Makefile @@ -0,0 +1 @@ +obj-m += nandflash_postest.o diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_postest/nandflash_postest.c b/drivers/mtd/tests/sprd_mtdtest/nandflash_postest/nandflash_postest.c new file mode 100755 index 00000000..9691190a --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_postest/nandflash_postest.c @@ -0,0 +1,321 @@ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/io.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/list.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/random.h> +#include <mach/hardware.h> +#include <linux/vmalloc.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> +#include <linux/spinlock.h> +#include <linux/workqueue.h> +#include <linux/moduleparam.h> + +static struct mtd_info *mtd = NULL; +static int dev = 4; +static int bad_pos = 0; +static int bad_len = 2; +module_param(dev, int, S_IRUGO); +module_param(bad_pos, int, S_IRUGO); +module_param(bad_len, int, S_IRUGO); +MODULE_PARM_DESC(dev, "MTD device number to use"); +MODULE_PARM_DESC(bad_pos, "indicate the bad_flag's position"); +MODULE_PARM_DESC(bad_len, "indicate the bad_flag's length"); + +static int erase_eraseblock(struct mtd_info *mtd, long offset) +{ + int err = 0; + struct erase_info ei = {0}; + + ei.mtd = mtd; + ei.addr = (offset/mtd->erasesize)*mtd->erasesize; + ei.len = mtd->erasesize; + + err = mtd_erase(mtd, &ei); + if (err) { + pr_err("err %d while erasing addr:0x%.8x\n", err, (unsigned int)offset); + return err; + } + + if (ei.state == MTD_ERASE_FAILED) { + pr_err("some erase error occurred at addr: 0x%.8x\n", (unsigned int)offset); + return -EIO; + } + + return 0; +} + +static int write_oob(loff_t offset, unsigned char *databuf, unsigned int len, unsigned char *oobbuf, unsigned int ooblen, unsigned int mode) +{ + struct mtd_oob_ops ops = {0}; + int err = 0; + + ops.mode = mode; + ops.len = len; + ops.retlen = 0; + ops.ooblen = ooblen; + ops.oobretlen = 0; + ops.ooboffs = 0; + ops.datbuf = databuf; + ops.oobbuf = oobbuf; + err = mtd->_write_oob(mtd, offset, &ops); + if (err || ops.oobretlen != ops.ooblen || ops.retlen != ops.len) { + pr_err("write address: 0x%.8x's failed, err:%d!", (unsigned int)offset, err); + if(err == 0) { + pr_err("expect:%d , %d real:%d, %d\n", ops.len, ops.ooblen, ops.retlen, ops.oobretlen); + err = -1; + } + } + + return err; +} + +static int read_oob(loff_t offset, unsigned char *databuf, unsigned int len, unsigned char *oobbuf, unsigned int ooblen, unsigned int mode) +{ + struct mtd_oob_ops ops = {0}; + int err = 0; + + ops.mode = mode; + ops.len = len; + ops.retlen = 0; + ops.ooblen = ooblen; + ops.oobretlen = 0; + ops.ooboffs = 0; + ops.datbuf = databuf; + ops.oobbuf = oobbuf; + err = mtd->_read_oob(mtd, offset, &ops); + if (err || ops.oobretlen != ops.ooblen || ops.retlen != ops.len) { + pr_err("read address: 0x%.8x's failed, err:%d!", (unsigned int)offset, err); + if(err == 0) { + pr_err("expect:%d , %d real:%d, %d\n", ops.len, ops.ooblen, ops.retlen, ops.oobretlen); + err = -1; + } + } + + return err; +} + +static int __init nandflash_postest_init(void) +{ + int err = 0; + loff_t offset = 0; + unsigned char *pagebuf_r = NULL; + unsigned char *oobbuf_r = NULL; + unsigned char *pagebuf_w = NULL; + unsigned char *oobbuf_w = NULL; + unsigned int j = 0, i = 0; + unsigned int ret_len = 0; + struct rnd_state rnd_state; + unsigned int tmp_len = 0, tmp_pos = 0; + + printk("\n"); + pr_info("----------------------------------------------------------------------\n"); + + /*prepare work*/ + mtd = get_mtd_device(NULL, dev); + if (IS_ERR(mtd)) { + err = PTR_ERR(mtd); + pr_err("Cannot get MTD device\n"); + return err; + } + + if(!mtd->_block_isbad || !mtd->_block_markbad || !mtd->_read_oob || !mtd->_write_oob || + !mtd->_read || !mtd->_write) { + pr_err("Some mtd's func may be NULL!"); + goto out; + } + + oobbuf_r = vmalloc(mtd->oobsize); + oobbuf_w = vmalloc(mtd->oobsize); + pagebuf_r = vmalloc(mtd->writesize); + pagebuf_w = vmalloc(mtd->writesize); + if(!pagebuf_r || !oobbuf_r || !pagebuf_w || !oobbuf_w ) { + pr_err("Alloc buf failed!"); + goto out; + } + + //find a vailid block + while(offset < mtd->size) { + if(!(mtd->_block_isbad(mtd, offset))) + break; + offset += mtd->erasesize; + } + + if(offset >= mtd->size) { + pr_err("The whole mtd_partion are bad!\n"); + goto out; + } + + /*step 1:bad flag test*/ + pr_info("Step 1 begin:\n"); + err = erase_eraseblock(mtd, (long)offset); + if(err) { + pr_err("1.1 erase failed at EB: %d\n", ((unsigned int)offset)/mtd->erasesize); + goto out; + } + mtd->_block_markbad(mtd, offset); + pr_info("Mark block 0x%.8x as bad!\n", (unsigned int)offset); + + err = read_oob(offset, NULL, 0, oobbuf_r, mtd->oobsize, MTD_OPS_RAW); + if(err != 0) { + pr_err("1.2 read failed!\n"); + goto erase; + } + + for(i = bad_pos; i < (bad_pos + bad_len); i ++) { + if(oobbuf_r[i] != 0) { + pr_err("1.2 bad_flag pos failed, pos:%d flag:0x%.2x\n", i, oobbuf_r[i]); + goto erase; + } + } + + if(mtd->_block_isbad(mtd, offset) != 1) { + pr_err("1.3 bad_flag func failed!\n"); + goto erase; + } + + err = erase_eraseblock(mtd, (long)offset); + if(err) { + pr_err("1.4 erase failed at EB: %d\n", ((unsigned int)offset)/mtd->erasesize); + goto out; + } + pr_info("Bad block test successful: pos and func are all ok!\n"); + pr_info("Step 1 end successfully!\n"); + + /* step 2: oob and main area position test */ + pr_info("Step 2 begin:\n"); + //prepare value + prandom_seed_state(&rnd_state, 1); + prandom_bytes_state(&rnd_state, oobbuf_w, mtd->oobsize); + prandom_bytes_state(&rnd_state, pagebuf_w, mtd->writesize); + + offset += mtd->erasesize; + err = erase_eraseblock(mtd, (long)offset); + if(err) { + pr_err("2.1 erase failed at EB: %d\n", ((unsigned int)offset)/mtd->erasesize); + goto out; + } + pr_info("Erase block %d successfully!\n", ((unsigned int)offset)/mtd->erasesize); + + err = write_oob(offset, pagebuf_w, mtd->writesize, oobbuf_w, mtd->oobsize, MTD_OPS_RAW); + if(err != 0) { + pr_err("2.1 write failed!\n"); + goto erase; + } + + err = read_oob(offset, pagebuf_r, mtd->writesize, oobbuf_r, mtd->oobsize, MTD_OPS_RAW); + if(err != 0) { + pr_err("2.1 read failed!\n"); + goto erase; + } + + if(memcmp(oobbuf_w, oobbuf_r, mtd->oobsize) != 0) { + pr_err("2.1 compare oob failed!\n"); + goto erase; + } + if(memcmp(pagebuf_w, pagebuf_r, mtd->writesize) != 0) { + pr_err("2.1 compare page failed!\n"); + goto erase; + } + + offset += mtd->writesize; + err = write_oob(offset, pagebuf_w, mtd->writesize, oobbuf_w, mtd->oobsize, MTD_OPS_PLACE_OOB); + if(err != 0) { + pr_err("2.2 write failed!\n"); + goto erase; + } + + err = read_oob(offset, pagebuf_r, mtd->writesize, oobbuf_r, mtd->oobsize, MTD_OPS_RAW); + if(err != 0) { + pr_err("2.2 read failed!\n"); + goto erase; + } + + for(i = 0, j = 0; j < mtd->ecclayout->oobavail; i ++)//test spare_info pos + { + tmp_pos = mtd->ecclayout->oobfree[i].offset; + tmp_len = mtd->ecclayout->oobfree[i].length; + if(tmp_pos == 0 && tmp_len == 0) { + pr_err("2.2 ecclayout may wrong!\n"); + goto erase; + } + if(memcmp(oobbuf_w + tmp_pos, oobbuf_r + tmp_pos, tmp_len) != 0) { + pr_err("2.2 spare_info pos test failed!\n"); + goto erase; + } + j += tmp_len; + } + + if(memcmp(pagebuf_r, pagebuf_w, mtd->writesize) != 0) { + pr_err("2.2 compare page failed!\n"); + goto erase; + } + + err = read_oob(offset, pagebuf_r, mtd->writesize, oobbuf_r, mtd->oobsize, MTD_OPS_PLACE_OOB); + if(err != 0) { + pr_err("2.3 read failed!\n"); + goto erase; + } + + if(memcmp(pagebuf_w, pagebuf_r, mtd->writesize) != 0) { + pr_err("2.3 compare page failed!\n"); + goto erase; + } + memcpy(oobbuf_w, oobbuf_r, mtd->oobsize); + + pr_info("Step 2 end successfully!\n"); + + /*step 3: oob and main area position test with ecc*/ + pr_info("Step 3 begin:\n"); + offset += mtd->writesize; + //write main with ecc + err = mtd->_write(mtd, offset, mtd->writesize, &ret_len, pagebuf_w); + if((err != 0 ) || (ret_len != mtd->writesize)) { + pr_err("3.1 write page failed at %#llx\n", (long long)offset); + goto erase; + } + + //read main with ecc + err = mtd->_read(mtd, offset, mtd->writesize, &ret_len, pagebuf_r); + if((err != 0 ) || (ret_len != mtd->writesize)) { + pr_err("3.1 read page failed at %#llx\n", (long long)offset); + goto erase; + } + if(memcmp(pagebuf_w, pagebuf_r, mtd->writesize) != 0) { + pr_err("3.1 compare page failed!\n"); + } + pr_info("Step 3 end successfully!\n"); + pr_info("The position test end successfully!\n"); + +erase: + err = erase_eraseblock(mtd, (long)offset); + if(err) { + pr_err("4.1 erase failed at EB: %d\n", ((unsigned int)offset)/mtd->erasesize); + goto out; + } +out: + vfree(pagebuf_r); + vfree(oobbuf_r); + vfree(pagebuf_w); + vfree(oobbuf_w); + pr_info("----------------------------------------------------------------------\n"); + return -1;//inorder to return failed when insmod this module +} + +static void __exit nandflash_postest_exit(void) +{ + put_mtd_device(mtd); + return; +} + +module_init(nandflash_postest_init); +module_exit(nandflash_postest_exit); + +MODULE_DESCRIPTION("Test basic nandflash driver"); +MODULE_AUTHOR("ming.tang"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_postest/readme.txt b/drivers/mtd/tests/sprd_mtdtest/nandflash_postest/readme.txt new file mode 100755 index 00000000..540be1f6 --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_postest/readme.txt @@ -0,0 +1,15 @@ +postest——位置测试
+本测试主要测试驱动的基本操作是否正确。该测试会将一个正常的block标记成bad_block，测试结束后需要调用强制擦除接口将该bad_block恢复正常（将/sys/kernel/debug/nfc_base/allowEraseBadBlock置为1）。
+
+参数说明：
+dev:用于指定测试使用的mtd分区，默认值为4
+bad_pos:用于指定坏块标记的位置，默认值为0
+bad_len:用于指定坏块标记的长度，默认值为2 bytes
+
+使用方法：
+1 将/sys/kernel/debug/nfc_base/allowEraseBadBlock置为1；
+cmd:echo "1" > /sys/kernel/debug/nfc_base/allowEraseBadBlock
+2 root后加载测试模块并传入参数，测试结果通过kernel log输出;
+cmd:insmod nandflash_postest.ko dev=4 bad_pos=0 bad_len=2
+3 将/sys/kernel/debug/nfc_base/allowEraseBadBlock置为0
+cmd:echo "0" > /sys/kernel/debug/nfc_base/allowEraseBadBlock
\ No newline at end of file diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_stdtest/Makefile b/drivers/mtd/tests/sprd_mtdtest/nandflash_stdtest/Makefile new file mode 100755 index 00000000..8e266ee6 --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_stdtest/Makefile @@ -0,0 +1 @@ +obj-m += nandflash_stdtest.o diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_stdtest/nandflash_stdtest.c b/drivers/mtd/tests/sprd_mtdtest/nandflash_stdtest/nandflash_stdtest.c new file mode 100755 index 00000000..a4f1563b --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_stdtest/nandflash_stdtest.c @@ -0,0 +1,2110 @@ +#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <asm/uaccess.h>
+#include <linux/types.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mtd/mtd.h>
+#include <linux/delay.h>
+#include <asm/div64.h>
+#include <linux/err.h>
+#include <linux/sched.h>
+#include <linux/random.h>
+#include <linux/vmalloc.h>
+
+#undef pr_fmt
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+static int dev = 4;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static struct mtd_info *mtd = NULL;
+static unsigned char *bbt = NULL;
+
+static int ebcnt;
+static int pgcnt;
+static int errcnt;
+static int pgsize;
+static int subpgsize;
+static int use_offset;
+static int use_len;
+static int use_len_max;
+static int vary_offset;
+static struct rnd_state rnd_state;
+static struct timeval start, finish;
+static int goodebcnt;
+static int subsize;
+static int subcount;
+static int bufsize;
+static unsigned char * writebuf;
+static unsigned char *readbuf;
+static int *offsets;
+static unsigned char *twopages;
+static unsigned char *boundary;
+
+static inline void mtd_test_start_timing(void)
+{
+ do_gettimeofday(&start);
+}
+
+static inline void mtd_test_stop_timing(void)
+{
+ do_gettimeofday(&finish);
+}
+
+void mtd_test_dump_buf(unsigned char *buf, unsigned int num, unsigned int col_num)
+{
+ unsigned int i = 0, j = 0;
+
+ if(col_num == 0)
+ col_num = 32;
+
+ for(i = 0; i < num; i ++)
+ {
+ if((i%col_num) == 0) {
+ if(i != 0)
+ pr_info("\n");
+ pr_info("%.8x:", j);
+ j += col_num;
+ }
+ if((i%4) == 0)
+ pr_info(" ");
+ pr_info("%.2x", buf[i]);
+ }
+ pr_info("\n");
+}
+
+static int mtd_test_erase_eraseblock(int ebnum, int blocks)
+{
+ int err = 0;
+ struct erase_info ei = {0};
+
+ if(blocks == 0)
+ blocks = 1;
+
+ ei.mtd = mtd;
+ ei.addr = ebnum * mtd->erasesize;
+ ei.len = mtd->erasesize * blocks;
+
+ err = mtd_erase(mtd, &ei);
+ if (err) {
+ pr_err("error %d while erasing EB %d\n", err, ebnum);
+ return err;
+ }
+
+ if (ei.state == MTD_ERASE_FAILED) {
+ pr_err("Some erase error occurred at EB %d\n", ebnum);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int mtd_test_erase_whole_device(void)
+{
+ int err = 0;
+ unsigned int i = 0;
+
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = mtd_test_erase_eraseblock(i, 0);
+ if (err)
+ return err;
+ cond_resched();
+ }
+ return 0;
+}
+
+static int mtd_test_scan_bad_block(void)
+{
+ unsigned int i = 0, bad = 0;
+
+ bbt = (unsigned char *)vmalloc(ebcnt);
+ if (!bbt) {
+ pr_info("error: cannot allocate memory\n");
+ return -ENOMEM;
+ }
+
+ pr_info("scanning for bad eraseblocks first\n");
+ for (i = 0; i < ebcnt; ++i) {
+ bbt[i] = mtd_block_isbad(mtd, i * mtd->erasesize) ? 1 : 0;
+ if (bbt[i])
+ bad += 1;
+ cond_resched();
+ }
+ pr_info("scanned %d eraseblocks, %d are bad\n", ebcnt, bad);
+ goodebcnt = ebcnt - bad;
+ return 0;
+}
+
+static int readtest_read_page(int ebnum, unsigned char *databuf, unsigned char *oobbuf)
+{
+ int i = 0, ret = 0;
+ unsigned int read = 0;
+ struct mtd_oob_ops ops = {0};
+ loff_t addr = ebnum * mtd->erasesize;
+
+ memset(databuf, 0 , mtd->erasesize);
+ memset(oobbuf, 0 , mtd->erasesize);
+ for (i = 0; i < pgcnt; i++) {
+ ret = mtd_read(mtd, addr, pgsize, &read, databuf);
+ if (ret || read != pgsize) {
+ pr_err("error: read failed at %#llx, ret: %d read: %d\n",
+ (long long)addr, ret, read);
+ return ret ? ret : -EINVAL;
+ }
+
+ ops.mode = MTD_OPS_PLACE_OOB;
+ ops.len = 0;
+ ops.retlen = 0;
+ ops.ooblen = mtd->oobsize;
+ ops.oobretlen = 0;
+ ops.ooboffs = 0;
+ ops.datbuf = NULL;
+ ops.oobbuf = oobbuf;
+ ret = mtd_read_oob(mtd, addr, &ops);
+ if (ret || ops.oobretlen != mtd->oobsize) {
+ pr_err("error: read oob failed at "
+ "%#llx, ret: %d oobretlen: %d\n", (long long)addr, ret, ops.oobretlen);
+ return ret ? ret : -EINVAL;
+ }
+ databuf += mtd->writesize;
+ oobbuf += mtd->oobsize;
+ addr += mtd->writesize;
+ }
+
+ return ret;
+}
+
+static int mtd_test_readtest(void)
+{
+ int ret = 0;
+ unsigned int i = 0;
+ unsigned char *iobuf = NULL, *iobuf1 = NULL;
+
+ iobuf = (unsigned char *)kmalloc(mtd->erasesize, GFP_KERNEL);
+ iobuf1 = (unsigned char *)kmalloc(mtd->erasesize, GFP_KERNEL);
+ if (!iobuf1 || !iobuf) {
+ pr_err("error: cannot allocate enough memory, %d, 0x%.8x, 0x%.8x!\n", mtd->erasesize, (unsigned int)iobuf, (unsigned int)iobuf1);
+ goto out;
+ }
+
+ pr_info("readtest begin!\n");
+ for (i = 0; i < ebcnt; ++i) {
+
+ if (bbt[i])
+ continue;
+ ret = readtest_read_page(i, iobuf, iobuf1);
+ if (ret) {
+ pr_err("read block %d failed!\n", i);
+ mtd_test_dump_buf(iobuf, mtd->erasesize, 32);
+ mtd_test_dump_buf(iobuf1, mtd->oobsize, 32);
+ goto out;
+ }
+ cond_resched();
+ }
+
+ pr_info("readtest finished successfully!\n");
+out:
+ kfree(iobuf);
+ kfree(iobuf1);
+ return ret;
+}
+
+static int pagetest_write_eraseblock(int ebnum)
+{
+ int err = 0;
+ size_t written = 0;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ prandom_bytes_state(&rnd_state, writebuf, mtd->erasesize);
+ cond_resched();
+ err = mtd_write(mtd, addr, mtd->erasesize, &written, writebuf);
+ if (err || written != mtd->erasesize) {
+ pr_err("%s, write failed at %#llx\n", __func__, (long long)addr);
+ return err ? err : -EINVAL;
+ }
+
+ return err;
+}
+
+static int pagetest_verify_eraseblock(int ebnum)
+{
+ int err = 0;
+ size_t read = 0;
+ uint32_t j = 0, i = 0;
+ loff_t addr0 = 0, addrn = 0;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ for (i = 0; i < ebcnt && bbt[i]; ++i)
+ addr0 += mtd->erasesize;
+
+ addrn = mtd->size;
+ for (i = 0; i < ebcnt && bbt[ebcnt - i - 1]; ++i)
+ addrn -= mtd->erasesize;
+
+ prandom_bytes_state(&rnd_state, writebuf, mtd->erasesize);
+ for (j = 0; j < pgcnt - 1; ++j, addr += pgsize) {
+ /* Do a read to set the internal dataRAMs to different data */
+ err = mtd_read(mtd, addr0, bufsize, &read, twopages);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != bufsize) {
+ pr_err("2.1 error: read failed at %#llx\n",
+ (long long)addr0);
+ return err;
+ }
+ err = mtd_read(mtd, addrn - bufsize, bufsize, &read, twopages);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != bufsize) {
+ pr_err("2.2 error: read failed at %#llx\n",
+ (long long)(addrn - bufsize));
+ return err;
+ }
+ memset(twopages, 0, bufsize);
+ err = mtd_read(mtd, addr, bufsize, &read, twopages);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != bufsize) {
+ pr_err("2.3 error: read failed at %#llx\n",
+ (long long)addr);
+ break;
+ }
+ if (memcmp(twopages, writebuf + (j * pgsize), bufsize)) {
+ pr_err("2.4 error: verify failed at %#llx\n",
+ (long long)addr);
+ }
+ }
+ /* Check boundary between eraseblocks */
+ if (addr <= addrn - pgsize - pgsize && !bbt[ebnum + 1]) {
+ struct rnd_state old_state = rnd_state;
+
+ /* Do a read to set the internal dataRAMs to different data */
+ err = mtd_read(mtd, addr0, bufsize, &read, twopages);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != bufsize) {
+ pr_err("2.5 error: read failed at %#llx\n",
+ (long long)addr0);
+ return err;
+ }
+ err = mtd_read(mtd, addrn - bufsize, bufsize, &read, twopages);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != bufsize) {
+ pr_err("2.6 error: read failed at %#llx\n",
+ (long long)(addrn - bufsize));
+ return err;
+ }
+ memset(twopages, 0, bufsize);
+ err = mtd_read(mtd, addr, bufsize, &read, twopages);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != bufsize) {
+ pr_err("2.7 error: read failed at %#llx\n",
+ (long long)addr);
+ return err;
+ }
+ memcpy(boundary, writebuf + mtd->erasesize - pgsize, pgsize);
+ prandom_bytes_state(&rnd_state, boundary + pgsize, pgsize);
+ if (memcmp(twopages, boundary, bufsize)) {
+ pr_err("2.8 error: verify failed at %#llx\n",
+ (long long)addr);
+ }
+ rnd_state = old_state;
+ }
+ return err;
+}
+
+static int pagetest_crosstest(void)
+{
+ int err = 0;
+ size_t read = 0;
+ unsigned int i = 0;
+ loff_t addr = 0, addr0 = 0, addrn = 0;
+ unsigned char *pp1 = NULL, *pp2 = NULL, *pp3 = NULL, *pp4 = NULL;
+
+// pr_info("crosstest\n");
+ pp1 = kmalloc(pgsize * 4, GFP_KERNEL);
+ if (!pp1) {
+ pr_err("2.9 error: cannot allocate memory\n");
+ return -ENOMEM;
+ }
+ pp2 = pp1 + pgsize;
+ pp3 = pp2 + pgsize;
+ pp4 = pp3 + pgsize;
+ memset(pp1, 0, pgsize * 4);
+
+ addr0 = 0;
+ for (i = 0; i < ebcnt && bbt[i]; ++i)
+ addr0 += mtd->erasesize;
+
+ addrn = mtd->size;
+ for (i = 0; i < ebcnt && bbt[ebcnt - i - 1]; ++i)
+ addrn -= mtd->erasesize;
+
+ /* Read 2nd-to-last page to pp1 */
+ addr = addrn - pgsize - pgsize;
+ err = mtd_read(mtd, addr, pgsize, &read, pp1);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != pgsize) {
+ pr_err("2.10 error: read failed at %#llx\n",
+ (long long)addr);
+ kfree(pp1);
+ return err;
+ }
+
+ /* Read 3rd-to-last page to pp1 */
+ addr = addrn - pgsize - pgsize - pgsize;
+ err = mtd_read(mtd, addr, pgsize, &read, pp1);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != pgsize) {
+ pr_err("2.11 error: read failed at %#llx\n",
+ (long long)addr);
+ kfree(pp1);
+ return err;
+ }
+
+ /* Read first page to pp2 */
+ addr = addr0;
+// pr_info("reading page at %#llx\n", (long long)addr);
+ err = mtd_read(mtd, addr, pgsize, &read, pp2);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != pgsize) {
+ pr_err("2.12 error: read failed at %#llx\n",
+ (long long)addr);
+ kfree(pp1);
+ return err;
+ }
+
+ /* Read last page to pp3 */
+ addr = addrn - pgsize;
+// pr_info("reading page at %#llx\n", (long long)addr);
+ err = mtd_read(mtd, addr, pgsize, &read, pp3);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != pgsize) {
+ pr_err("2.13 error: read failed at %#llx\n",
+ (long long)addr);
+ kfree(pp1);
+ return err;
+ }
+
+ /* Read first page again to pp4 */
+ addr = addr0;
+// pr_info("reading page at %#llx\n", (long long)addr);
+ err = mtd_read(mtd, addr, pgsize, &read, pp4);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != pgsize) {
+ pr_err("2.14 error: read failed at %#llx\n",
+ (long long)addr);
+ kfree(pp1);
+ return err;
+ }
+
+ /* pp2 and pp4 should be the same */
+// pr_info("verifying pages read at %#llx match\n", (long long)addr0);
+ if (memcmp(pp2, pp4, pgsize)) {
+ pr_err("2.15 verify failed!\n");
+ }// else if (!err)
+// pr_info("crosstest ok\n");
+ kfree(pp1);
+ return err;
+}
+
+static int pagetest_erasecrosstest(void)
+{
+ int err = 0;
+ loff_t addr0 = 0;
+ char *readbuf = twopages;
+ size_t read = 0, written = 0;
+ unsigned int i = 0, ebnum = 0, ebnum2 = 0;
+
+// pr_info("erasecrosstest\n");
+
+ ebnum = 0;
+ addr0 = 0;
+ for (i = 0; i < ebcnt && bbt[i]; ++i) {
+ addr0 += mtd->erasesize;
+ ebnum += 1;
+ }
+
+ ebnum2 = ebcnt - 1;
+ while (ebnum2 && bbt[ebnum2])
+ ebnum2 -= 1;
+
+// pr_info("erasing block %d\n", ebnum);
+ err = mtd_test_erase_eraseblock(ebnum, 0);
+ if (err)
+ return err;
+
+// pr_info("writing 1st page of block %d\n", ebnum);
+ prandom_bytes_state(&rnd_state, writebuf, pgsize);
+ strcpy(writebuf, "There is no data like this!");
+ err = mtd_write(mtd, addr0, pgsize, &written, writebuf);
+ if (err || written != pgsize) {
+ pr_err("2.16 error: write failed at %#llx\n",
+ (long long)addr0);
+ return err ? err : -EINVAL;
+ }
+
+// pr_info("reading 1st page of block %d\n", ebnum);
+ memset(readbuf, 0, pgsize);
+ err = mtd_read(mtd, addr0, pgsize, &read, readbuf);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != pgsize) {
+ pr_err("2.17 error: read failed at %#llx\n",
+ (long long)addr0);
+ return err ? err : -EINVAL;
+ }
+
+// pr_info("verifying 1st page of block %d\n", ebnum);
+ if (memcmp(writebuf, readbuf, pgsize)) {
+ pr_err("2.18 verify failed!\n");
+ return -1;
+ }
+
+// pr_info("erasing block %d\n", ebnum);
+ err = mtd_test_erase_eraseblock(ebnum, 0);
+ if (err)
+ return err;
+
+// pr_info("writing 1st page of block %d\n", ebnum);
+ prandom_bytes_state(&rnd_state, writebuf, pgsize);
+ strcpy(writebuf, "There is no data like this!");
+ err = mtd_write(mtd, addr0, pgsize, &written, writebuf);
+ if (err || written != pgsize) {
+ pr_err("2.19 error: write failed at %#llx\n",
+ (long long)addr0);
+ return err ? err : -EINVAL;
+ }
+
+// pr_info("erasing block %d\n", ebnum2);
+ err = mtd_test_erase_eraseblock(ebnum2, 0);
+ if (err)
+ return err;
+
+// pr_info("reading 1st page of block %d\n", ebnum);
+ memset(readbuf, 0, pgsize);
+ err = mtd_read(mtd, addr0, pgsize, &read, readbuf);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != pgsize) {
+ pr_err("2.20 error: read failed at %#llx\n",
+ (long long)addr0);
+ return err ? err : -EINVAL;
+ }
+
+// pr_info("verifying 1st page of block %d\n", ebnum);
+ if (memcmp(writebuf, readbuf, pgsize)) {
+ pr_err("2.21 verify failed!\n");
+ return -1;
+ }
+
+// if (!err)
+// pr_info("erasecrosstest ok\n");
+ return err;
+}
+
+static int pagetest_erasetest(void)
+{
+ int err = 0;
+ loff_t addr0 = 0;
+ size_t read = 0, written = 0;
+ unsigned int i = 0, ebnum = 0, ok = 1;
+
+// pr_info("erasetest\n");
+
+ ebnum = 0;
+ addr0 = 0;
+ for (i = 0; i < ebcnt && bbt[i]; ++i) {
+ addr0 += mtd->erasesize;
+ ebnum += 1;
+ }
+
+// pr_info("erasing block %d\n", ebnum);
+ err = mtd_test_erase_eraseblock(ebnum, 0);
+ if (err)
+ return err;
+
+// pr_info("writing 1st page of block %d\n", ebnum);
+ prandom_bytes_state(&rnd_state, writebuf, pgsize);
+ err = mtd_write(mtd, addr0, pgsize, &written, writebuf);
+ if (err || written != pgsize) {
+ pr_err("2.22 error: write failed at %#llx\n",
+ (long long)addr0);
+ return err ? err : -EINVAL;
+ }
+
+// pr_info("erasing block %d\n", ebnum);
+ err = mtd_test_erase_eraseblock(ebnum, 0);
+ if (err)
+ return err;
+
+// pr_info("reading 1st page of block %d\n", ebnum);
+ err = mtd_read(mtd, addr0, pgsize, &read, twopages);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != pgsize) {
+ pr_err("2.23 error: read failed at %#llx\n",
+ (long long)addr0);
+ return err ? err : -EINVAL;
+ }
+
+// pr_info("verifying 1st page of block %d is all 0xff\n", ebnum);
+ for (i = 0; i < pgsize; ++i)
+ if (twopages[i] != 0xff) {
+ pr_err("2.24 verifying all 0xff failed at %d\n",
+ i);
+ ok = 0;
+ break;
+ }
+
+// if (ok && !err)
+// pr_info("erasetest ok\n");
+
+ return err;
+}
+
+static int mtd_test_pagetest(void)
+{
+ int err = 0;
+ unsigned int i = 0;
+
+ bufsize = mtd->writesize * 2;
+ writebuf = kzalloc(mtd->erasesize, GFP_KERNEL);
+ if (!writebuf) {
+ pr_err("error: alloc writebuf failed!\n");
+ err = -ENOMEM;
+ goto out;
+ }
+ twopages = kzalloc(bufsize, GFP_KERNEL);
+ if (!twopages) {
+ pr_err("error: alloc twopages failed!\n");
+ err = -ENOMEM;
+ goto out;
+ }
+ boundary = kzalloc(bufsize, GFP_KERNEL);
+ if (!boundary) {
+ pr_err("error: alloc boundary failed!\n");
+ err = -ENOMEM;
+ goto out;
+ }
+ pr_info("pagetest begin!\n");
+
+ err = mtd_test_erase_whole_device();
+ if(err)
+ goto out;
+
+ prandom_seed_state(&rnd_state, 1);
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = pagetest_write_eraseblock(i);
+ if (err)
+ goto out;
+ cond_resched();
+ }
+
+ prandom_seed_state(&rnd_state, 1);
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = pagetest_verify_eraseblock(i);
+ if (err)
+ goto out;
+ cond_resched();
+ }
+
+ err = pagetest_crosstest();
+ if (err)
+ goto out;
+
+ err = pagetest_erasecrosstest();
+ if (err)
+ goto out;
+
+ err = pagetest_erasetest();
+ if (err)
+ goto out;
+
+ pr_info("pagetest finished successfullly!\n");
+
+out:
+ kfree(writebuf);
+ kfree(boundary);
+ kfree(twopages);
+ return err;
+}
+
+static int subpagetest_write_eraseblock(int ebnum)
+{
+ int err = 0;
+ size_t written = 0;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ prandom_bytes_state(&rnd_state, writebuf, subpgsize);
+ err = mtd_write(mtd, addr, subpgsize, &written, writebuf);
+ if (unlikely(err || written != subpgsize)) {
+ pr_err("error: write failed at %#llx, err: %d, written: %d\n",
+ (long long)addr, err, written);
+ return err ? err : -EINVAL;
+ }
+
+ addr += subpgsize;
+ prandom_bytes_state(&rnd_state, writebuf, subpgsize);
+ err = mtd_write(mtd, addr, subpgsize, &written, writebuf);
+ if (unlikely(err || written != subpgsize)) {
+ pr_err("error: write failed at %#llx, err: %d, written: %d\n",
+ (long long)addr, err, written);
+ return err ? err : -EINVAL;
+ }
+
+ return err;
+}
+
+static int subpagetest_write_eraseblock2(int ebnum)
+{
+ int err = 0;
+ size_t written = 0;
+ unsigned int k = 0;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ for (k = 1; k < 33; ++k) {
+ if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize)
+ break;
+ prandom_bytes_state(&rnd_state, writebuf, subpgsize * k);
+ err = mtd_write(mtd, addr, subpgsize * k, &written, writebuf);
+ if (unlikely(err || written != subpgsize * k)) {
+ pr_err("error: write failed at %#llx, err: %d, written: %d\n",
+ (long long)addr, err, written);
+ return err ? err : -EINVAL;
+ }
+ addr += subpgsize * k;
+ }
+
+ return err;
+}
+
+static int subpagetest_verify_eraseblock(int ebnum)
+{
+ int err = 0;
+ size_t read = 0;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ prandom_bytes_state(&rnd_state, writebuf, subpgsize);
+ memset(readbuf, 0, subpgsize);
+ err = mtd_read(mtd, addr, subpgsize, &read, readbuf);
+ if (unlikely(err || read != subpgsize)) {
+ if (mtd_is_bitflip(err) && read == subpgsize) {
+ pr_info("ECC correction at %#llx\n",
+ (long long)addr);
+ err = 0;
+ } else {
+ pr_err("error: read failed at %#llx\n",
+ (long long)addr);
+ return err ? err : -EINVAL;
+ }
+ }
+ if (unlikely(memcmp(readbuf, writebuf, subpgsize))) {
+ pr_err("error: verify failed at %#llx\n",
+ (long long)addr);
+ pr_info("------------- written----------------\n");
+ mtd_test_dump_buf(writebuf, subpgsize, 32);
+ pr_info("------------- read ------------------\n");
+ mtd_test_dump_buf(readbuf, subpgsize, 32);
+ pr_info("-------------------------------------\n");
+ }
+
+ addr += subpgsize;
+
+ prandom_bytes_state(&rnd_state, writebuf, subpgsize);
+ memset(readbuf, 0, subpgsize);
+ err = mtd_read(mtd, addr, subpgsize, &read, readbuf);
+ if (unlikely(err || read != subpgsize)) {
+ if (mtd_is_bitflip(err) && read == subpgsize) {
+ pr_info("ECC correction at %#llx\n",
+ (long long)addr);
+ err = 0;
+ } else {
+ pr_err("error: read failed at %#llx\n",
+ (long long)addr);
+ return err ? err : -EINVAL;
+ }
+ }
+ if (unlikely(memcmp(readbuf, writebuf, subpgsize))) {
+ pr_info("error: verify failed at %#llx\n",
+ (long long)addr);
+ pr_info("------------- written----------------\n");
+ mtd_test_dump_buf(writebuf, subpgsize, 32);
+ pr_info("------------- read ------------------\n");
+ mtd_test_dump_buf(readbuf, subpgsize, 32);
+ pr_info("-------------------------------------\n");
+ return -1;
+ }
+
+ return err;
+}
+
+static int subpagetest_verify_eraseblock2(int ebnum)
+{
+ int err = 0;
+ size_t read = 0;
+ unsigned int k = 0;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ for (k = 1; k < 33; ++k) {
+ if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize)
+ break;
+ prandom_bytes_state(&rnd_state, writebuf, subpgsize * k);
+ memset(readbuf, 0, subpgsize * k);
+ err = mtd_read(mtd, addr, subpgsize * k, &read, readbuf);
+ if (unlikely(err || read != subpgsize * k)) {
+ if (mtd_is_bitflip(err) && read == subpgsize * k) {
+ pr_info("ECC correction at %#llx\n",
+ (long long)addr);
+ err = 0;
+ } else {
+ pr_err("error: read failed at "
+ "%#llx\n", (long long)addr);
+ return err ? err : -EINVAL;
+ }
+ }
+ if (unlikely(memcmp(readbuf, writebuf, subpgsize * k))) {
+ pr_err("error: verify failed at %#llx\n",
+ (long long)addr);
+ return -1;
+ }
+ addr += subpgsize * k;
+ }
+
+ return err;
+}
+
+static int subpagetest_verify_eraseblock_ff(int ebnum)
+{
+ int err = 0;
+ uint32_t j = 0;
+ size_t read = 0;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ memset(writebuf, 0xff, subpgsize);
+ for (j = 0; j < mtd->erasesize / subpgsize; ++j) {
+ memset(readbuf, 0, subpgsize);
+ err = mtd_read(mtd, addr, subpgsize, &read, readbuf);
+ if (unlikely(err || read != subpgsize)) {
+ if (mtd_is_bitflip(err) && read == subpgsize) {
+ pr_info("ECC correction at %#llx\n",
+ (long long)addr);
+ err = 0;
+ } else {
+ pr_err("error: read failed at "
+ "%#llx\n", (long long)addr);
+ return err ? err : -EINVAL;
+ }
+ }
+ if (unlikely(memcmp(readbuf, writebuf, subpgsize))) {
+ pr_err("error: verify 0xff failed at "
+ "%#llx\n", (long long)addr);
+ return -1;
+ }
+ addr += subpgsize;
+ }
+
+ return err;
+}
+
+static int subpagetest_verify_all_eraseblocks_ff(void)
+{
+ int err = 0;
+ unsigned int i = 0;
+
+// pr_info("verifying all eraseblocks for 0xff\n");
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = subpagetest_verify_eraseblock_ff(i);
+ if (err)
+ return err;
+ cond_resched();
+ }
+// pr_info("verified %u eraseblocks\n", i);
+ return 0;
+}
+
+static int mtd_test_subpagetest(void)
+{
+ int err = 0;
+ unsigned int i = 0;
+
+ writebuf = kmalloc(32 * subpgsize, GFP_KERNEL);
+ if (!writebuf) {
+ pr_err("Error: cannot allocate enough memory!\n");
+ err = -ENOMEM;
+ goto out;
+ }
+ readbuf = kmalloc(32 * subpgsize, GFP_KERNEL);
+ if (!readbuf) {
+ pr_err("Error: cannot allocate enough memory!\n");
+ err = -ENOMEM;
+ goto out;
+ }
+ pr_info("subpagetest begin!\n");
+ err = mtd_test_erase_whole_device();
+ if (err)
+ goto out;
+
+// pr_info("writing whole device\n");
+ prandom_seed_state(&rnd_state, 1);
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = subpagetest_write_eraseblock(i);
+ if (unlikely(err))
+ goto out;
+ cond_resched();
+ }
+// pr_info("written %u eraseblocks\n", i);
+
+ prandom_seed_state(&rnd_state, 1);
+// pr_info("verifying all eraseblocks\n");
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = subpagetest_verify_eraseblock(i);
+ if (unlikely(err))
+ goto out;
+ cond_resched();
+ }
+// pr_info("verified %u eraseblocks\n", i);
+
+ err = mtd_test_erase_whole_device();
+ if (err)
+ goto out;
+
+ err = subpagetest_verify_all_eraseblocks_ff();
+ if (err)
+ goto out;
+
+ /* Write all eraseblocks */
+ prandom_seed_state(&rnd_state, 3);
+// pr_info("writing whole device\n");
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = subpagetest_write_eraseblock2(i);
+ if (unlikely(err))
+ goto out;
+ cond_resched();
+ }
+// pr_info("written %u eraseblocks\n", i);
+
+ /* Check all eraseblocks */
+ prandom_seed_state(&rnd_state, 3);
+// pr_info("verifying all eraseblocks\n");
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = subpagetest_verify_eraseblock2(i);
+ if (unlikely(err))
+ goto out;
+ cond_resched();
+ }
+// pr_info("verified %u eraseblocks\n", i);
+
+ err = mtd_test_erase_whole_device();
+ if (err)
+ goto out;
+
+ err = subpagetest_verify_all_eraseblocks_ff();
+ if (err)
+ goto out;
+
+ pr_info("subpagetest finished successfully!\n");
+
+out:
+ kfree(readbuf);
+ kfree(writebuf);
+ return err;
+}
+
+static void oobtest_do_vary_offset(void)
+{
+ use_len -= 1;
+ if (use_len < 1) {
+ use_offset += 1;
+ if (use_offset >= use_len_max)
+ use_offset = 0;
+ use_len = use_len_max - use_offset;
+ }
+}
+
+static int oobtest_write_eraseblock(int ebnum)
+{
+ int err = 0;
+ unsigned int i = 0;
+ struct mtd_oob_ops ops;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
+ prandom_bytes_state(&rnd_state, writebuf, use_len);
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = 0;
+ ops.retlen = 0;
+ ops.ooblen = use_len;
+ ops.oobretlen = 0;
+ ops.ooboffs = use_offset;
+ ops.datbuf = NULL;
+ ops.oobbuf = writebuf;
+ err = mtd_write_oob(mtd, addr, &ops);
+ if (err || ops.oobretlen != use_len) {
+ pr_err("error: writeoob failed at %#llx\n",
+ (long long)addr);
+ pr_err("error: use_len %d, use_offset %d\n",
+ use_len, use_offset);
+ errcnt += 1;
+ return err ? err : -1;
+ }
+ if (vary_offset)
+ oobtest_do_vary_offset();
+ }
+
+ return err;
+}
+
+static int oobtest_write_whole_device(void)
+{
+ int err = 0;
+ unsigned int i = 1;
+
+// pr_info("writing OOBs of whole device\n");
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = oobtest_write_eraseblock(i);
+ if (err)
+ return err;
+ cond_resched();
+ }
+// pr_info("written %u eraseblocks\n", i);
+ return 0;
+}
+
+static int oobtest_verify_eraseblock(int ebnum)
+{
+ int err = 0;
+ unsigned int i = 0;
+ struct mtd_oob_ops ops = {0};
+ loff_t addr = ebnum * mtd->erasesize;
+
+ for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
+ prandom_bytes_state(&rnd_state, writebuf, use_len);
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = 0;
+ ops.retlen = 0;
+ ops.ooblen = use_len;
+ ops.oobretlen = 0;
+ ops.ooboffs = use_offset;
+ ops.datbuf = NULL;
+ ops.oobbuf = readbuf;
+ err = mtd_read_oob(mtd, addr, &ops);
+ if (err || ops.oobretlen != use_len) {
+ pr_err("error: readoob failed at %#llx\n",
+ (long long)addr);
+ errcnt += 1;
+ return err ? err : -1;
+ }
+ if (memcmp(readbuf, writebuf, use_len)) {
+ pr_err("error: verify failed at %#llx\n",
+ (long long)addr);
+ errcnt += 1;
+ if (errcnt > 1000) {
+ pr_err("error: too many errors\n");
+ return -1;
+ }
+ }
+ if (use_offset != 0 || use_len < mtd->ecclayout->oobavail) {
+ int k;
+
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = 0;
+ ops.retlen = 0;
+ ops.ooblen = mtd->ecclayout->oobavail;
+ ops.oobretlen = 0;
+ ops.ooboffs = 0;
+ ops.datbuf = NULL;
+ ops.oobbuf = readbuf;
+ err = mtd_read_oob(mtd, addr, &ops);
+ if (err || ops.oobretlen != mtd->ecclayout->oobavail) {
+ pr_err("error: readoob failed at %#llx\n",
+ (long long)addr);
+ errcnt += 1;
+ return err ? err : -1;
+ }
+ if (memcmp(readbuf + use_offset, writebuf, use_len)) {
+ pr_err("error: verify failed at %#llx\n",
+ (long long)addr);
+ errcnt += 1;
+ if (errcnt > 1000) {
+ pr_err("error: too many errors\n");
+ return -1;
+ }
+ }
+ for (k = 0; k < use_offset; ++k)
+ if (readbuf[k] != 0xff) {
+ pr_err("error: verify 0xff "
+ "failed at %#llx\n",
+ (long long)addr);
+ errcnt += 1;
+ if (errcnt > 1000) {
+ pr_err("error: too "
+ "many errors\n");
+ return -1;
+ }
+ }
+ for (k = use_offset + use_len;
+ k < mtd->ecclayout->oobavail; ++k)
+ if (readbuf[k] != 0xff) {
+ pr_err("error: verify 0xff "
+ "failed at %#llx\n",
+ (long long)addr);
+ errcnt += 1;
+ if (errcnt > 1000) {
+ pr_err("error: too "
+ "many errors\n");
+ return -1;
+ }
+ }
+ }
+ if (vary_offset)
+ oobtest_do_vary_offset();
+ }
+ return err;
+}
+
+/*
+add by ming.tang
+adjust the str when mtd->ecclayout->oobavail is not 4bytes alignment
+@str:the string need to be adjusted
+@str_len:the string's length
+@sub_len:mtd->ecclayout->oobavail
+*/
+static void oobtest_adjust(char *str, unsigned int str_len, unsigned int sub_len)
+{
+ int i = 0;
+ char *tmp_str = NULL;
+ unsigned int tmp_len = 0;
+
+ tmp_len = ((sub_len >> 2) + 1) << 2;
+ tmp_str = (char *)vmalloc(str_len);
+ if(!tmp_str) {
+ pr_err("%s, can't get enough memory!\n", __func__);
+ return;
+ }
+
+ memcpy(tmp_str, str, str_len);
+ memset(str, 0, str_len);
+
+ for(i = 0; i < str_len/tmp_len; i++)
+ {
+ memcpy(str + (sub_len * i), tmp_str + (tmp_len * i), sub_len);
+ }
+ vfree(tmp_str);
+ return;
+}
+
+static int oobtest_verify_eraseblock_in_one_go(int ebnum)
+{
+ int err = 0;
+ struct mtd_oob_ops ops = {0};
+ loff_t addr = ebnum * mtd->erasesize;
+ size_t len = mtd->ecclayout->oobavail * pgcnt;
+
+ prandom_bytes_state(&rnd_state, writebuf, (((mtd->ecclayout->oobavail >> 2) + 1) << 2) * pgcnt);
+ if(mtd->ecclayout->oobavail%4 != 0)
+ oobtest_adjust(writebuf, (((mtd->ecclayout->oobavail >> 2) + 1) << 2) * pgcnt, mtd->ecclayout->oobavail);
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = 0;
+ ops.retlen = 0;
+ ops.ooblen = len;
+ ops.oobretlen = 0;
+ ops.ooboffs = 0;
+ ops.datbuf = NULL;
+ ops.oobbuf = readbuf;
+ err = mtd_read_oob(mtd, addr, &ops);
+ if (err || ops.oobretlen != len) {
+ pr_err("error: readoob failed at %#llx\n",
+ (long long)addr);
+ errcnt += 1;
+ return err ? err : -1;
+ }
+ if (memcmp(readbuf, writebuf, len)) {
+ pr_err("error: verify failed at %#llx\n",
+ (long long)addr);
+ errcnt += 1;
+ if (errcnt > 1000) {
+ pr_err("error: too many errors\n");
+ return -1;
+ }
+ }
+
+ return err;
+}
+
+static int oobtest_verify_all_eraseblocks(void)
+{
+ int err = 0;
+ unsigned int i = 0;
+
+// pr_info("verifying all eraseblocks\n");
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = oobtest_verify_eraseblock(i);
+ if (err)
+ return err;
+ cond_resched();
+ }
+// pr_info("verified %u eraseblocks\n", i);
+ return 0;
+}
+
+static int mtd_test_oobtest(void)
+{
+ int err = 0;
+ unsigned int i = 0;
+ loff_t addr = 0, addr0 = 0;
+ struct mtd_oob_ops ops = {0};
+
+ err = -ENOMEM;
+ readbuf = vmalloc(mtd->erasesize);
+ if (!readbuf) {
+ pr_err("error: alloc readbuf failed!\n");
+ goto out;
+ }
+ writebuf = vmalloc(mtd->erasesize);
+ if (!writebuf) {
+ pr_err("error: alloc writebuf failed!\n");
+ goto out;
+ }
+
+ use_offset = 0;
+ use_len = mtd->ecclayout->oobavail;
+ use_len_max = mtd->ecclayout->oobavail;
+ vary_offset = 0;
+ pr_info("oobtest begin!\n");
+
+ /* First test: write all OOB, read it back and verify */
+ pr_info("test 1 of 5\n");
+
+ err = mtd_test_erase_whole_device();
+ if (err)
+ goto out;
+
+ prandom_seed_state(&rnd_state, 1);
+ err = oobtest_write_whole_device();
+ if (err)
+ goto out;
+
+ prandom_seed_state(&rnd_state, 1);
+ err = oobtest_verify_all_eraseblocks();
+ if (err)
+ goto out;
+
+ /*
+ * Second test: write all OOB, a block at a time, read it back and
+ * verify.
+ */
+ pr_info("test 2 of 5\n");
+
+ err = mtd_test_erase_whole_device();
+ if (err)
+ goto out;
+
+ prandom_seed_state(&rnd_state, 3);
+ err = oobtest_write_whole_device();
+ if (err)
+ goto out;
+
+ /* Check all eraseblocks */
+ prandom_seed_state(&rnd_state, 3);
+// pr_info("verifying all eraseblocks\n");
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = oobtest_verify_eraseblock_in_one_go(i);
+ if (err)
+ goto out;
+ cond_resched();
+ }
+// pr_info("verified %u eraseblocks\n", i);
+
+ /*
+ * Third test: write OOB at varying offsets and lengths, read it back
+ * and verify.
+ */
+ pr_info("test 3 of 5\n");
+
+ err = mtd_test_erase_whole_device();
+ if (err)
+ goto out;
+
+ /* Write all eraseblocks */
+ use_offset = 0;
+ use_len = mtd->ecclayout->oobavail;
+ use_len_max = mtd->ecclayout->oobavail;
+ vary_offset = 1;
+ prandom_seed_state(&rnd_state, 5);
+
+ err = oobtest_write_whole_device();
+ if (err)
+ goto out;
+
+ /* Check all eraseblocks */
+ use_offset = 0;
+ use_len = mtd->ecclayout->oobavail;
+ use_len_max = mtd->ecclayout->oobavail;
+ vary_offset = 1;
+ prandom_seed_state(&rnd_state, 5);
+ err = oobtest_verify_all_eraseblocks();
+ if (err)
+ goto out;
+
+ use_offset = 0;
+ use_len = mtd->ecclayout->oobavail;
+ use_len_max = mtd->ecclayout->oobavail;
+ vary_offset = 0;
+
+ /* Fourth test: try to write off end of device */
+ pr_info("test 4 of 5\n");
+
+ err = mtd_test_erase_whole_device();
+ if (err)
+ goto out;
+
+ addr0 = 0;
+ for (i = 0; i < ebcnt && bbt[i]; ++i)
+ addr0 += mtd->erasesize;
+
+ /* Attempt to write off end of OOB */
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = 0;
+ ops.retlen = 0;
+ ops.ooblen = 1;
+ ops.oobretlen = 0;
+ ops.ooboffs = mtd->ecclayout->oobavail;
+ ops.datbuf = NULL;
+ ops.oobbuf = writebuf;
+ pr_info("attempting to start write past end of OOB\n");
+ pr_info("an error is expected...\n");
+ err = mtd_write_oob(mtd, addr0, &ops);
+ if (err) {
+ pr_info("error occurred as expected\n");
+ err = 0;
+ } else {
+ pr_info("error: can write past end of OOB\n");
+ errcnt += 1;
+ }
+
+ /* Attempt to read off end of OOB */
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = 0;
+ ops.retlen = 0;
+ ops.ooblen = 1;
+ ops.oobretlen = 0;
+ ops.ooboffs = mtd->ecclayout->oobavail;
+ ops.datbuf = NULL;
+ ops.oobbuf = readbuf;
+ pr_info("attempting to start read past end of OOB\n");
+ pr_info("an error is expected...\n");
+ err = mtd_read_oob(mtd, addr0, &ops);
+ if (err) {
+ pr_info("error occurred as expected\n");
+ err = 0;
+ } else {
+ pr_err("error: can read past end of OOB\n");
+ errcnt += 1;
+ }
+
+ if (bbt[ebcnt - 1])
+ pr_info("skipping end of device tests because last "
+ "block is bad\n");
+ else {
+ /* Attempt to write off end of device */
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = 0;
+ ops.retlen = 0;
+ ops.ooblen = mtd->ecclayout->oobavail + 1;
+ ops.oobretlen = 0;
+ ops.ooboffs = 0;
+ ops.datbuf = NULL;
+ ops.oobbuf = writebuf;
+ pr_info("attempting to write past end of device\n");
+ pr_info("an error is expected...\n");
+ err = mtd_write_oob(mtd, mtd->size - mtd->writesize, &ops);
+ if (err) {
+ pr_info("error occurred as expected\n");
+ err = 0;
+ } else {
+ pr_err("error: wrote past end of device\n");
+ errcnt += 1;
+ }
+
+ /* Attempt to read off end of device */
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = 0;
+ ops.retlen = 0;
+ ops.ooblen = mtd->ecclayout->oobavail + 1;
+ ops.oobretlen = 0;
+ ops.ooboffs = 0;
+ ops.datbuf = NULL;
+ ops.oobbuf = readbuf;
+ pr_info("attempting to read past end of device\n");
+ pr_info("an error is expected...\n");
+ err = mtd_read_oob(mtd, mtd->size - mtd->writesize, &ops);
+ if (err) {
+ pr_info("error occurred as expected\n");
+ err = 0;
+ } else {
+ pr_err("error: read past end of device\n");
+ errcnt += 1;
+ }
+
+ err = mtd_test_erase_eraseblock(ebcnt - 1, 0);
+ if (err)
+ goto out;
+
+ /* Attempt to write off end of device */
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = 0;
+ ops.retlen = 0;
+ ops.ooblen = mtd->ecclayout->oobavail;
+ ops.oobretlen = 0;
+ ops.ooboffs = 1;
+ ops.datbuf = NULL;
+ ops.oobbuf = writebuf;
+ pr_info("attempting to write past end of device\n");
+ pr_info("an error is expected...\n");
+ err = mtd_write_oob(mtd, mtd->size - mtd->writesize, &ops);
+ if (err) {
+ pr_info("error occurred as expected\n");
+ err = 0;
+ } else {
+ pr_err("error: wrote past end of device\n");
+ errcnt += 1;
+ }
+
+ /* Attempt to read off end of device */
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = 0;
+ ops.retlen = 0;
+ ops.ooblen = mtd->ecclayout->oobavail;
+ ops.oobretlen = 0;
+ ops.ooboffs = 1;
+ ops.datbuf = NULL;
+ ops.oobbuf = readbuf;
+ pr_info("attempting to read past end of device\n");
+ pr_info("an error is expected...\n");
+ err = mtd_read_oob(mtd, mtd->size - mtd->writesize, &ops);
+ if (err) {
+ pr_info("error occurred as expected\n");
+ err = 0;
+ } else {
+ pr_err("error: read past end of device\n");
+ errcnt += 1;
+ }
+ }
+
+ /* Fifth test: write / read across block boundaries */
+ pr_info("test 5 of 5\n");
+
+ /* Erase all eraseblocks */
+ err = mtd_test_erase_whole_device();
+ if (err)
+ goto out;
+
+ /* Write all eraseblocks */
+ prandom_seed_state(&rnd_state, 11);
+// pr_info("writing OOBs of whole device\n");
+ for (i = 0; i < ebcnt - 1; ++i) {
+ int cnt = 2;
+ int pg;
+ size_t sz = mtd->ecclayout->oobavail;
+ if (bbt[i] || bbt[i + 1])
+ continue;
+ addr = (i + 1) * mtd->erasesize - mtd->writesize;
+ for (pg = 0; pg < cnt; ++pg) {
+ prandom_bytes_state(&rnd_state, writebuf, sz);
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = 0;
+ ops.retlen = 0;
+ ops.ooblen = sz;
+ ops.oobretlen = 0;
+ ops.ooboffs = 0;
+ ops.datbuf = NULL;
+ ops.oobbuf = writebuf;
+ err = mtd_write_oob(mtd, addr, &ops);
+ if (err)
+ goto out;
+ cond_resched();
+ addr += mtd->writesize;
+ }
+ }
+// pr_info("written %u eraseblocks\n", i);
+
+ /* Check all eraseblocks */
+ prandom_seed_state(&rnd_state, 11);
+// pr_info("verifying all eraseblocks\n");
+ for (i = 0; i < ebcnt - 1; ++i) {
+ if (bbt[i] || bbt[i + 1])
+ continue;
+ prandom_bytes_state(&rnd_state, writebuf,
+ (((mtd->ecclayout->oobavail >> 2) + 1) << 2) * 2);
+ if(mtd->ecclayout->oobavail%4 != 0)
+ oobtest_adjust(writebuf, (((mtd->ecclayout->oobavail >> 2) + 1) << 2) * 2, mtd->ecclayout->oobavail);
+ addr = (i + 1) * mtd->erasesize - mtd->writesize;
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = 0;
+ ops.retlen = 0;
+ ops.ooblen = mtd->ecclayout->oobavail * 2;
+ ops.oobretlen = 0;
+ ops.ooboffs = 0;
+ ops.datbuf = NULL;
+ ops.oobbuf = readbuf;
+ err = mtd_read_oob(mtd, addr, &ops);
+ if (err)
+ goto out;
+ if (memcmp(readbuf, writebuf, mtd->ecclayout->oobavail * 2)) {
+ pr_err("error: verify failed at %#llx\n",
+ (long long)addr);
+ errcnt += 1;
+ if (errcnt > 1000) {
+ pr_err("error: too many errors\n");
+ goto out;
+ }
+ }
+ cond_resched();
+ }
+// pr_info("verified %u eraseblocks\n", i);
+
+ pr_info("oobtest finished with %d errors!\n", errcnt);
+out:
+ vfree(writebuf);
+ vfree(readbuf);
+
+ return err;
+}
+
+static long speedtest_calc_speed(void)
+{
+ long ms = 0;
+ uint64_t k = 0;
+
+ ms = (finish.tv_sec - start.tv_sec) * 1000 +
+ (finish.tv_usec - start.tv_usec) / 1000;
+ if (ms == 0)
+ return 0;
+ k = goodebcnt * (mtd->erasesize / 1024) * 1000;
+ do_div(k, ms);
+ return k;
+}
+
+static int speedtest_write_eraseblock(int ebnum)
+{
+ int err = 0;
+ size_t written = 0;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ err = mtd_write(mtd, addr, mtd->erasesize, &written, writebuf);
+ if (err || written != mtd->erasesize) {
+ pr_err("error: write failed at %#llx\n", addr);
+ if (!err)
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+static int speedtest_write_eraseblock_by_page(int ebnum)
+{
+ int err = 0;
+ size_t written = 0;
+ unsigned int i = 0;
+ void *buf = writebuf;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ for (i = 0; i < pgcnt; i++) {
+ err = mtd_write(mtd, addr, pgsize, &written, buf);
+ if (err || written != pgsize) {
+ pr_err("error: write failed at %#llx\n",
+ addr);
+ if (!err)
+ err = -EINVAL;
+ break;
+ }
+ addr += pgsize;
+ buf += pgsize;
+ }
+
+ return err;
+}
+
+static int speedtest_write_eraseblock_by_2pages(int ebnum)
+{
+ int err = 0;
+ void *buf = writebuf;
+ unsigned int i = 0, n = pgcnt / 2;
+ size_t written = 0, sz = pgsize * 2;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ for (i = 0; i < n; i++) {
+ err = mtd_write(mtd, addr, sz, &written, buf);
+ if (err || written != sz) {
+ pr_err("error: write failed at %#llx\n",
+ addr);
+ if (!err)
+ err = -EINVAL;
+ return err;
+ }
+ addr += sz;
+ buf += sz;
+ }
+ if (pgcnt % 2) {
+ err = mtd_write(mtd, addr, pgsize, &written, buf);
+ if (err || written != pgsize) {
+ pr_err("error: write failed at %#llx\n",
+ addr);
+ if (!err)
+ err = -EINVAL;
+ }
+ }
+
+ return err;
+}
+
+static int speedtest_read_eraseblock(int ebnum)
+{
+ int err = 0;
+ size_t read = 0;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ err = mtd_read(mtd, addr, mtd->erasesize, &read, writebuf);
+ /* Ignore corrected ECC errors */
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != mtd->erasesize) {
+ pr_err("error: read failed at %#llx\n", addr);
+ if (!err)
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+static int speedtest_read_eraseblock_by_page(int ebnum)
+{
+ int err = 0;
+ size_t read = 0;
+ unsigned int i = 0;
+ void *buf = writebuf;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ for (i = 0; i < pgcnt; i++) {
+ err = mtd_read(mtd, addr, pgsize, &read, buf);
+ /* Ignore corrected ECC errors */
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != pgsize) {
+ pr_err("error: read failed at %#llx\n",
+ addr);
+ if (!err)
+ err = -EINVAL;
+ break;
+ }
+ addr += pgsize;
+ buf += pgsize;
+ }
+
+ return err;
+}
+
+static int speedtest_read_eraseblock_by_2pages(int ebnum)
+{
+ int err = 0;
+ void *buf = writebuf;
+ size_t read = 0, sz = pgsize * 2;
+ unsigned int i = 0, n = pgcnt / 2;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ for (i = 0; i < n; i++) {
+ err = mtd_read(mtd, addr, sz, &read, buf);
+ /* Ignore corrected ECC errors */
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != sz) {
+ pr_err("error: read failed at %#llx\n",
+ addr);
+ if (!err)
+ err = -EINVAL;
+ return err;
+ }
+ addr += sz;
+ buf += sz;
+ }
+ if (pgcnt % 2) {
+ err = mtd_read(mtd, addr, pgsize, &read, buf);
+ /* Ignore corrected ECC errors */
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (err || read != pgsize) {
+ pr_err("error: read failed at %#llx\n",
+ addr);
+ if (!err)
+ err = -EINVAL;
+ }
+ }
+
+ return err;
+}
+
+static int mtd_test_speedtest(void )
+{
+ int err = 0;
+ long speed = 0;
+ unsigned int i = 0, blocks = 0, j = 0, k = 0;
+
+ writebuf = vmalloc(mtd->erasesize);
+ if(!writebuf) {
+ pr_err("%s, can't get enough memory!\n", __func__);
+ return -ENOMEM;
+ }
+
+ memset(writebuf, 0, mtd->erasesize);
+ prandom_bytes(writebuf, mtd->erasesize);
+
+ pr_info("speedtest begin!\n");
+ err = mtd_test_erase_whole_device();
+ if (err)
+ goto out;
+
+ /* Write all eraseblocks, 1 eraseblock at a time */
+// pr_info("testing eraseblock write speed\n");
+ mtd_test_start_timing();
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = speedtest_write_eraseblock(i);
+ if (err)
+ goto out;
+ cond_resched();
+ }
+ mtd_test_stop_timing();
+ speed = speedtest_calc_speed();
+ pr_info("eraseblock write speed is %ld KiB/s\n", speed);
+
+ /* Read all eraseblocks, 1 eraseblock at a time */
+// pr_info("testing eraseblock read speed\n");
+ mtd_test_start_timing();
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = speedtest_read_eraseblock(i);
+ if (err)
+ goto out;
+ cond_resched();
+ }
+ mtd_test_stop_timing();
+ speed = speedtest_calc_speed();
+ pr_info("eraseblock read speed is %ld KiB/s\n", speed);
+
+ err = mtd_test_erase_whole_device();
+ if (err)
+ goto out;
+
+ /* Write all eraseblocks, 1 page at a time */
+// pr_info("testing page write speed\n");
+ mtd_test_start_timing();
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = speedtest_write_eraseblock_by_page(i);
+ if (err)
+ goto out;
+ cond_resched();
+ }
+ mtd_test_stop_timing();
+ speed = speedtest_calc_speed();
+ pr_info("page write speed is %ld KiB/s\n", speed);
+
+ /* Read all eraseblocks, 1 page at a time */
+// pr_info("testing page read speed\n");
+ mtd_test_start_timing();
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = speedtest_read_eraseblock_by_page(i);
+ if (err)
+ goto out;
+ cond_resched();
+ }
+ mtd_test_stop_timing();
+ speed = speedtest_calc_speed();
+ pr_info("page read speed is %ld KiB/s\n", speed);
+
+ err = mtd_test_erase_whole_device();
+ if (err)
+ goto out;
+
+ /* Write all eraseblocks, 2 pages at a time */
+// pr_info("testing 2 page write speed\n");
+ mtd_test_start_timing();
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = speedtest_write_eraseblock_by_2pages(i);
+ if (err)
+ goto out;
+ cond_resched();
+ }
+ mtd_test_stop_timing();
+ speed = speedtest_calc_speed();
+ pr_info("2 page write speed is %ld KiB/s\n", speed);
+
+ /* Read all eraseblocks, 2 pages at a time */
+// pr_info("testing 2 page read speed\n");
+ mtd_test_start_timing();
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = speedtest_read_eraseblock_by_2pages(i);
+ if (err)
+ goto out;
+ cond_resched();
+ }
+ mtd_test_stop_timing();
+ speed = speedtest_calc_speed();
+ pr_info("2 page read speed is %ld KiB/s\n", speed);
+
+ /* Erase all eraseblocks */
+// pr_info("Testing erase speed\n");
+ mtd_test_start_timing();
+ for (i = 0; i < ebcnt; ++i) {
+ if (bbt[i])
+ continue;
+ err = mtd_test_erase_eraseblock(i, 0);
+ if (err)
+ goto out;
+ cond_resched();
+ }
+ mtd_test_stop_timing();
+ speed = speedtest_calc_speed();
+ pr_info("erase speed is %ld KiB/s\n", speed);
+
+ /* Multi-block erase all eraseblocks */
+ for (k = 1; k < 7; k++) {
+ blocks = 1 << k;
+// pr_info("Testing %dx multi-block erase speed\n", blocks);
+ mtd_test_start_timing();
+ for (i = 0; i < ebcnt; ) {
+ for (j = 0; j < blocks && (i + j) < ebcnt; j++)
+ if (bbt[i + j])
+ break;
+ if (j < 1) {
+ i++;
+ continue;
+ }
+ err = mtd_test_erase_eraseblock(i, j);
+ if (err)
+ goto out;
+ cond_resched();
+ i += j;
+ }
+ mtd_test_stop_timing();
+ speed = speedtest_calc_speed();
+ pr_info("%dx multi-block erase speed is %ld KiB/s\n",
+ blocks, speed);
+ }
+ pr_info("speedtest finished successfully!\n");
+
+out:
+ vfree(writebuf);
+ return err;
+}
+
+static int stresstest_rand_eb(void)
+{
+ unsigned int eb = 0;
+
+again:
+ eb = prandom_u32();
+ /* Read or write up 2 eraseblocks at a time - hence 'ebcnt - 1' */
+ eb %= (ebcnt - 1);
+ if (bbt[eb])
+ goto again;
+ return eb;
+}
+
+static int stresstest_rand_offs(void)
+{
+ unsigned int offs = 0;
+
+ offs = prandom_u32();
+ offs %= bufsize;
+ return offs;
+}
+
+static int stresstest_rand_len(int offs)
+{
+ unsigned int len = 0;
+
+ len = prandom_u32();
+ len %= (bufsize - offs);
+ return len;
+}
+
+static int stresstest_do_read(void)
+{
+ int err = 0;
+ size_t read = 0;
+ loff_t addr = 0;
+ int eb = stresstest_rand_eb();
+ int offs = stresstest_rand_offs();
+ int len = stresstest_rand_len(offs);
+
+ if (bbt[eb + 1]) {
+ if (offs >= mtd->erasesize)
+ offs -= mtd->erasesize;
+ if (offs + len > mtd->erasesize)
+ len = mtd->erasesize - offs;
+ }
+ addr = eb * mtd->erasesize + offs;
+ err = mtd_read(mtd, addr, len, &read, readbuf);
+ if (mtd_is_bitflip(err))
+ err = 0;
+ if (unlikely(err || read != len)) {
+ pr_err("error: read failed at 0x%llx, err:%d len: %dread:%d\n",
+ (long long)addr, err, len, read);
+ if (!err)
+ err = -EINVAL;
+ return err;
+ }
+ return 0;
+}
+
+static int stresstest_do_write(void)
+{
+ int err = 0;
+ loff_t addr = 0;
+ size_t written = 0;
+ int eb = stresstest_rand_eb();
+ unsigned int offs = 0, len = 0;
+
+ offs = offsets[eb];
+ if (offs >= mtd->erasesize) {
+ err = mtd_test_erase_eraseblock(eb, 0);
+ if (err)
+ return err;
+ offs = offsets[eb] = 0;
+ }
+ len = stresstest_rand_len(offs);
+ len = ((len + pgsize - 1) / pgsize) * pgsize;
+ if (offs + len > mtd->erasesize) {
+ if (bbt[eb + 1])
+ len = mtd->erasesize - offs;
+ else {
+ err = mtd_test_erase_eraseblock(eb + 1, 0);
+ if (err)
+ return err;
+ offsets[eb + 1] = 0;
+ }
+ }
+ addr = eb * mtd->erasesize + offs;
+ err = mtd_write(mtd, addr, len, &written, writebuf);
+ if (unlikely(err || written != len)) {
+ pr_err("error: write failed at 0x%llx\n",
+ (long long)addr);
+ if (!err)
+ err = -EINVAL;
+ return err;
+ }
+ offs += len;
+ while (offs > mtd->erasesize) {
+ offsets[eb++] = mtd->erasesize;
+ offs -= mtd->erasesize;
+ }
+ offsets[eb] = offs;
+ return 0;
+}
+
+static int stresstest_do_operation(void)
+{
+ if (prandom_u32() & 1) {
+ return stresstest_do_read();
+ } else {
+ return stresstest_do_write();
+ }
+}
+
+static int mtd_test_stresstest(void)
+{
+ int err = 0;
+ unsigned int i = 0, op = 0;
+
+ bufsize = mtd->erasesize * 2;
+ readbuf = vmalloc(bufsize);
+ if(!readbuf) {
+ pr_err("%s, alloc readbuf failed!\n", __func__);
+ return -ENOMEM;
+ }
+ writebuf = vmalloc(bufsize);
+ if(!writebuf) {
+ pr_err("%s, alloc writebuf failed!\n", __func__);
+ vfree(readbuf);
+ return -ENOMEM;
+ }
+ offsets = vmalloc(ebcnt * sizeof(int));
+ if(!offsets) {
+ pr_err("%s, alloc offsets failed!\n", __func__);
+ vfree(readbuf);
+ vfree(writebuf);
+ return -ENOMEM;
+ }
+ pr_info("stresstest begin!\n");
+
+ for (i = 0; i < ebcnt; i++)
+ offsets[i] = mtd->erasesize;
+ prandom_bytes(writebuf, bufsize);
+
+ err = mtd_test_erase_whole_device();
+ if(err)
+ goto out;
+
+ for (op = 0; op < 10000; op++) {
+ if ((op & 1023) == 0)
+ pr_info("%d operations done\n", op);
+ err = stresstest_do_operation();
+ if (err)
+ goto out;
+ cond_resched();
+ }
+
+out:
+ vfree(offsets);
+ vfree(readbuf);
+ vfree(writebuf);
+ pr_info("stresstest finished, %d operations done!\n", op);
+ return err;
+}
+
+static int __init nandflash_stdtest_init(void)
+{
+ int err = 0;
+ uint64_t tmp = 0;
+
+ pr_info(KERN_INFO "\n");
+ pr_info(KERN_INFO "=================================================\n");
+
+ if (dev < 0) {
+ pr_info("Please specify a valid mtd-device via module parameter\n");
+ return -EINVAL;
+ }
+
+ pr_info("MTD device: %d\n", dev);
+
+ mtd = get_mtd_device(NULL, dev);
+ if (IS_ERR(mtd)) {
+ err = PTR_ERR(mtd);
+ pr_info("error: cannot get MTD device\n");
+ return err;
+ }
+
+ if (mtd->type != MTD_NANDFLASH) {
+ pr_info("this test requires NAND flash\n");
+ goto out;
+ }
+
+ tmp = mtd->size;
+ do_div(tmp, mtd->erasesize);
+ ebcnt = tmp;
+ pgcnt = mtd->erasesize / mtd->writesize;
+ pgsize = mtd->writesize;
+ subsize = mtd->writesize >> mtd->subpage_sft;
+ subcount = mtd->writesize / subsize;
+ subpgsize = mtd->writesize >> mtd->subpage_sft;
+
+ pr_info("MTD device size %llu, eraseblock size %u, "
+ "page size %u, count of eraseblocks %u, pages per "
+ "eraseblock %u, OOB size %u\n",
+ (unsigned long long)mtd->size, mtd->erasesize,
+ mtd->writesize, ebcnt, pgcnt, mtd->oobsize);
+
+ err = mtd_test_scan_bad_block();
+ if (err)
+ goto out;
+
+ err = mtd_test_readtest();
+ if(err) {
+ pr_err("readtest failed!\n");
+ goto out;
+ }
+ mdelay(100);
+ err = mtd_test_pagetest();
+ if(err) {
+ pr_err("pagetest failed!\n");
+ goto out;
+ }
+ mdelay(100);
+ err = mtd_test_subpagetest();
+ if(err) {
+ pr_err("subpagetest failed!\n");
+ goto out;
+ }
+ mdelay(100);
+ err = mtd_test_oobtest();
+ if(err) {
+ pr_err("oobtest failed!\n");
+ goto out;
+ }
+ mdelay(100);
+ err = mtd_test_speedtest();
+ if(err) {
+ pr_err("speedtest failed!\n");
+ goto out;
+ }
+ mdelay(100);
+ err = mtd_test_stresstest();
+ if(err) {
+ pr_err("stresstest failed!\n");
+ goto out;
+ }
+
+out:
+ pr_info(KERN_INFO "=================================================\n");
+ if(bbt != NULL)
+ vfree(bbt);
+ put_mtd_device(mtd);
+
+ return -1;
+}
+
+static void __exit nandflash_stdtest_exit(void)
+{
+ return;
+}
+
+module_init(nandflash_stdtest_init);
+module_exit(nandflash_stdtest_exit);
+
+MODULE_DESCRIPTION("mtd_stdand_test");
+MODULE_AUTHOR("ming.tang@spreadtrum.com");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/sprd_mtdtest/nandflash_stdtest/readme.txt b/drivers/mtd/tests/sprd_mtdtest/nandflash_stdtest/readme.txt new file mode 100755 index 00000000..bf67ac85 --- /dev/null +++ b/drivers/mtd/tests/sprd_mtdtest/nandflash_stdtest/readme.txt @@ -0,0 +1,9 @@ +stdtest——驱动标准测试
+本测试是将mtd开源社区提供的6个标准测试（read/page/subpage/oob/speed/stress）整合为一个标准测试。通过该测试，说明驱动程序已达到基本要求。
+
+参数说明：
+dev:用于指定测试使用的mtd分区，默认值为4
+
+使用方法：
+root后加载测试模块并传入参数，测试结果通过kernel log输出。
+cmd:insmod nandflash_stdtest.ko dev=4
\ No newline at end of file |