1 #define pr_fmt(fmt) "mtd_test: " fmt
3 #include <linux/module.h>
4 #include <linux/sched.h>
5 #include <linux/printk.h>
9 int mtdtest_erase_eraseblock(struct mtd_info *mtd, unsigned int ebnum)
13 loff_t addr = ebnum * mtd->erasesize;
15 memset(&ei, 0, sizeof(struct erase_info));
18 ei.len = mtd->erasesize;
20 err = mtd_erase(mtd, &ei);
22 pr_info("error %d while erasing EB %d\n", err, ebnum);
26 if (ei.state == MTD_ERASE_FAILED) {
27 pr_info("some erase error occurred at EB %d\n", ebnum);
33 static int is_block_bad(struct mtd_info *mtd, unsigned int ebnum)
36 loff_t addr = ebnum * mtd->erasesize;
38 ret = mtd_block_isbad(mtd, addr);
40 pr_info("block %d is bad\n", ebnum);
45 int mtdtest_scan_for_bad_eraseblocks(struct mtd_info *mtd, unsigned char *bbt,
46 unsigned int eb, int ebcnt)
50 if (!mtd_can_have_bb(mtd))
53 pr_info("scanning for bad eraseblocks\n");
54 for (i = 0; i < ebcnt; ++i) {
55 bbt[i] = is_block_bad(mtd, eb + i) ? 1 : 0;
60 pr_info("scanned %d eraseblocks, %d are bad\n", i, bad);
65 int mtdtest_erase_good_eraseblocks(struct mtd_info *mtd, unsigned char *bbt,
66 unsigned int eb, int ebcnt)
71 for (i = 0; i < ebcnt; ++i) {
74 err = mtdtest_erase_eraseblock(mtd, eb + i);
83 int mtdtest_read(struct mtd_info *mtd, loff_t addr, size_t size, void *buf)
88 err = mtd_read(mtd, addr, size, &read, buf);
89 /* Ignore corrected ECC errors */
90 if (mtd_is_bitflip(err))
92 if (!err && read != size)
95 pr_err("error: read failed at %#llx\n", addr);
100 int mtdtest_write(struct mtd_info *mtd, loff_t addr, size_t size,
106 err = mtd_write(mtd, addr, size, &written, buf);
107 if (!err && written != size)
110 pr_err("error: write failed at %#llx\n", addr);