mtd/tests/speedtest.c

17 #include <linux/mtd/mtd.h>
33 static struct mtd_info *mtd;
47 	loff_t addr = (loff_t)ebnum * mtd->erasesize;
51 	ei.len  = mtd->erasesize * blocks;
53 	err = mtd_erase(mtd, &ei);
65 	loff_t addr = (loff_t)ebnum * mtd->erasesize;
67 	return mtdtest_write(mtd, addr, mtd->erasesize, iobuf);
73 	loff_t addr = (loff_t)ebnum * mtd->erasesize;
77 		err = mtdtest_write(mtd, addr, pgsize, buf);
91 	loff_t addr = (loff_t)ebnum * mtd->erasesize;
95 		err = mtdtest_write(mtd, addr, sz, buf);
102 		err = mtdtest_write(mtd, addr, pgsize, buf);
109 	loff_t addr = (loff_t)ebnum * mtd->erasesize;
111 	return mtdtest_read(mtd, addr, mtd->erasesize, iobuf);
117 	loff_t addr = (loff_t)ebnum * mtd->erasesize;
121 		err = mtdtest_read(mtd, addr, pgsize, buf);
135 	loff_t addr = (loff_t)ebnum * mtd->erasesize;
139 		err = mtdtest_read(mtd, addr, sz, buf);
146 		err = mtdtest_read(mtd, addr, pgsize, buf);
168 	k = (uint64_t)goodebcnt * (mtd->erasesize / 1024) * 1000000;
183 		pr_info("Please specify a valid mtd-device via module parameter\n");
193 	mtd = get_mtd_device(NULL, dev);
194 	if (IS_ERR(mtd)) {
195 		err = PTR_ERR(mtd);
200 	if (mtd->writesize == 1) {
205 		pgsize = mtd->writesize;
207 	tmp = mtd->size;
208 	do_div(tmp, mtd->erasesize);
210 	pgcnt = mtd->erasesize / pgsize;
215 	       (unsigned long long)mtd->size, mtd->erasesize,
216 	       pgsize, ebcnt, pgcnt, mtd->oobsize);
222 	iobuf = kmalloc(mtd->erasesize, GFP_KERNEL);
226 	get_random_bytes(iobuf, mtd->erasesize);
231 	err = mtdtest_scan_for_bad_eraseblocks(mtd, bbt, 0, ebcnt);
239 	err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt);
279 	err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt);
319 	err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt);
362 	err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt);
402 	put_mtd_device(mtd);