1 #define pr_fmt(fmt) "mtd_test: " fmt
3 #include <linux/init.h>
4 #include <linux/module.h>
5 #include <linux/sched.h>
6 #include <linux/printk.h>
10 int mtdtest_erase_eraseblock(struct mtd_info *mtd, unsigned int ebnum)
14 loff_t addr = ebnum * mtd->erasesize;
16 memset(&ei, 0, sizeof(struct erase_info));
19 ei.len = mtd->erasesize;
21 err = mtd_erase(mtd, &ei);
23 pr_info("error %d while erasing EB %d\n", err, ebnum);
27 if (ei.state == MTD_ERASE_FAILED) {
28 pr_info("some erase error occurred at EB %d\n", ebnum);
34 static int is_block_bad(struct mtd_info *mtd, unsigned int ebnum)
37 loff_t addr = ebnum * mtd->erasesize;
39 ret = mtd_block_isbad(mtd, addr);
41 pr_info("block %d is bad\n", ebnum);
46 int mtdtest_scan_for_bad_eraseblocks(struct mtd_info *mtd, unsigned char *bbt,
47 unsigned int eb, int ebcnt)
51 if (!mtd_can_have_bb(mtd))
54 pr_info("scanning for bad eraseblocks\n");
55 for (i = 0; i < ebcnt; ++i) {
56 bbt[i] = is_block_bad(mtd, eb + i) ? 1 : 0;
61 pr_info("scanned %d eraseblocks, %d are bad\n", i, bad);
66 int mtdtest_erase_good_eraseblocks(struct mtd_info *mtd, unsigned char *bbt,
67 unsigned int eb, int ebcnt)
72 for (i = 0; i < ebcnt; ++i) {
75 err = mtdtest_erase_eraseblock(mtd, eb + i);
84 int mtdtest_read(struct mtd_info *mtd, loff_t addr, size_t size, void *buf)
89 err = mtd_read(mtd, addr, size, &read, buf);
90 /* Ignore corrected ECC errors */
91 if (mtd_is_bitflip(err))
93 if (!err && read != size)
96 pr_err("error: read failed at %#llx\n", addr);
101 int mtdtest_write(struct mtd_info *mtd, loff_t addr, size_t size,
107 err = mtd_write(mtd, addr, size, &written, buf);
108 if (!err && written != size)
111 pr_err("error: write failed at %#llx\n", addr);