1 // SPDX-License-Identifier: GPL-2.0-only
5  * Test read and write speed of a MTD device.
24 static int dev = -EINVAL;
47 	loff_t addr = (loff_t)ebnum * mtd->erasesize;  in multiblock_erase()
51 	ei.len  = mtd->erasesize * blocks;  in multiblock_erase()
65 	loff_t addr = (loff_t)ebnum * mtd->erasesize;  in write_eraseblock()
67 	return mtdtest_write(mtd, addr, mtd->erasesize, iobuf);  in write_eraseblock()
73 	loff_t addr = (loff_t)ebnum * mtd->erasesize;  in write_eraseblock_by_page()
91 	loff_t addr = (loff_t)ebnum * mtd->erasesize;  in write_eraseblock_by_2pages()
109 	loff_t addr = (loff_t)ebnum * mtd->erasesize;  in read_eraseblock()
111 	return mtdtest_read(mtd, addr, mtd->erasesize, iobuf);  in read_eraseblock()
117 	loff_t addr = (loff_t)ebnum * mtd->erasesize;  in read_eraseblock_by_page()
135 	loff_t addr = (loff_t)ebnum * mtd->erasesize;  in read_eraseblock_by_2pages()
169 	k = (uint64_t)goodebcnt * (mtd->erasesize / 1024) * 1000;  in calc_speed()
184 		pr_info("Please specify a valid mtd-device via module parameter\n");  in mtd_speedtest_init()
186 		return -EINVAL;  in mtd_speedtest_init()
201 	if (mtd->writesize == 1) {  in mtd_speedtest_init()
206 		pgsize = mtd->writesize;  in mtd_speedtest_init()
208 	tmp = mtd->size;  in mtd_speedtest_init()
209 	do_div(tmp, mtd->erasesize);  in mtd_speedtest_init()
211 	pgcnt = mtd->erasesize / pgsize;  in mtd_speedtest_init()
216 	       (unsigned long long)mtd->size, mtd->erasesize,  in mtd_speedtest_init()
217 	       pgsize, ebcnt, pgcnt, mtd->oobsize);  in mtd_speedtest_init()
222 	err = -ENOMEM;  in mtd_speedtest_init()
223 	iobuf = kmalloc(mtd->erasesize, GFP_KERNEL);  in mtd_speedtest_init()
225 		goto out;  in mtd_speedtest_init()
227 	prandom_bytes(iobuf, mtd->erasesize);  in mtd_speedtest_init()
231 		goto out;  in mtd_speedtest_init()
234 		goto out;  in mtd_speedtest_init()
242 		goto out;  in mtd_speedtest_init()
252 			goto out;  in mtd_speedtest_init()
256 			goto out;  in mtd_speedtest_init()
262 	/* Read all eraseblocks, 1 eraseblock at a time */  in mtd_speedtest_init()
263 	pr_info("testing eraseblock read speed\n");  in mtd_speedtest_init()
270 			goto out;  in mtd_speedtest_init()
274 			goto out;  in mtd_speedtest_init()
278 	pr_info("eraseblock read speed is %ld KiB/s\n", speed);  in mtd_speedtest_init()
282 		goto out;  in mtd_speedtest_init()
292 			goto out;  in mtd_speedtest_init()
296 			goto out;  in mtd_speedtest_init()
302 	/* Read all eraseblocks, 1 page at a time */  in mtd_speedtest_init()
303 	pr_info("testing page read speed\n");  in mtd_speedtest_init()
310 			goto out;  in mtd_speedtest_init()
314 			goto out;  in mtd_speedtest_init()
318 	pr_info("page read speed is %ld KiB/s\n", speed);  in mtd_speedtest_init()
322 		goto out;  in mtd_speedtest_init()
332 			goto out;  in mtd_speedtest_init()
336 			goto out;  in mtd_speedtest_init()
342 	/* Read all eraseblocks, 2 pages at a time */  in mtd_speedtest_init()
343 	pr_info("testing 2 page read speed\n");  in mtd_speedtest_init()
350 			goto out;  in mtd_speedtest_init()
354 			goto out;  in mtd_speedtest_init()
358 	pr_info("2 page read speed is %ld KiB/s\n", speed);  in mtd_speedtest_init()
365 		goto out;  in mtd_speedtest_init()
370 	/* Multi-block erase all eraseblocks */  in mtd_speedtest_init()
373 		pr_info("Testing %dx multi-block erase speed\n",  in mtd_speedtest_init()
386 				goto out;  in mtd_speedtest_init()
390 				goto out;  in mtd_speedtest_init()
396 		pr_info("%dx multi-block erase speed is %ld KiB/s\n",  in mtd_speedtest_init()
400 out:  in mtd_speedtest_init()