projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 084db4b0 AM |
2 | #define pr_fmt(fmt) "mtd_test: " fmt |
| 3 | ||
| 084db4b0 AM |
4 | #include <linux/module.h> |
| 5 | #include <linux/sched.h> | |
| 6 | #include <linux/printk.h> | |
| 7 | ||
| 8 | #include "mtd_test.h" | |
| 9 | ||
| 10 | int mtdtest_erase_eraseblock(struct mtd_info *mtd, unsigned int ebnum) | |
| 11 | { | |
| 12 | int err; | |
| 13 | struct erase_info ei; | |
| 1001ff7a | 14 | loff_t addr = (loff_t)ebnum * mtd->erasesize; |
| 084db4b0 AM |
15 | |
| 16 | memset(&ei, 0, sizeof(struct erase_info)); | |
| 17 | ei.mtd = mtd; | |
| 18 | ei.addr = addr; | |
| 19 | ei.len = mtd->erasesize; | |
| 20 | ||
| 21 | err = mtd_erase(mtd, &ei); | |
| 22 | if (err) { | |
| 23 | pr_info("error %d while erasing EB %d\n", err, ebnum); | |
| 24 | return err; | |
| 25 | } | |
| 26 | ||
| 27 | if (ei.state == MTD_ERASE_FAILED) { | |
| 28 | pr_info("some erase error occurred at EB %d\n", ebnum); | |
| 29 | return -EIO; | |
| 30 | } | |
| 31 | return 0; | |
| 32 | } | |
| 33 | ||
| 34 | static int is_block_bad(struct mtd_info *mtd, unsigned int ebnum) | |
| 35 | { | |
| 36 | int ret; | |
| 1001ff7a | 37 | loff_t addr = (loff_t)ebnum * mtd->erasesize; |
| 084db4b0 AM |
38 | |
| 39 | ret = mtd_block_isbad(mtd, addr); | |
| 40 | if (ret) | |
| 41 | pr_info("block %d is bad\n", ebnum); | |
| 42 | ||
| 43 | return ret; | |
| 44 | } | |
| 45 | ||
| 46 | int mtdtest_scan_for_bad_eraseblocks(struct mtd_info *mtd, unsigned char *bbt, | |
| 47 | unsigned int eb, int ebcnt) | |
| 48 | { | |
| 49 | int i, bad = 0; | |
| 50 | ||
| 51 | if (!mtd_can_have_bb(mtd)) | |
| 52 | return 0; | |
| 53 | ||
| 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; | |
| 57 | if (bbt[i]) | |
| 58 | bad += 1; | |
| 59 | cond_resched(); | |
| 60 | } | |
| 61 | pr_info("scanned %d eraseblocks, %d are bad\n", i, bad); | |
| 62 | ||
| 63 | return 0; | |
| 64 | } | |
| 65 | ||
| 66 | int mtdtest_erase_good_eraseblocks(struct mtd_info *mtd, unsigned char *bbt, | |
| 67 | unsigned int eb, int ebcnt) | |
| 68 | { | |
| 69 | int err; | |
| 70 | unsigned int i; | |
| 71 | ||
| 72 | for (i = 0; i < ebcnt; ++i) { | |
| 73 | if (bbt[i]) | |
| 74 | continue; | |
| 75 | err = mtdtest_erase_eraseblock(mtd, eb + i); | |
| 76 | if (err) | |
| 77 | return err; | |
| 78 | cond_resched(); | |
| 79 | } | |
| 80 | ||
| 81 | return 0; | |
| 82 | } | |
| 83 | ||
| 84 | int mtdtest_read(struct mtd_info *mtd, loff_t addr, size_t size, void *buf) | |
| 85 | { | |
| 86 | size_t read; | |
| 87 | int err; | |
| 88 | ||
| 89 | err = mtd_read(mtd, addr, size, &read, buf); | |
| 90 | /* Ignore corrected ECC errors */ | |
| 91 | if (mtd_is_bitflip(err)) | |
| 92 | err = 0; | |
| 93 | if (!err && read != size) | |
| 94 | err = -EIO; | |
| abc173ad AM |
95 | if (err) |
| 96 | pr_err("error: read failed at %#llx\n", addr); | |
| 084db4b0 AM |
97 | |
| 98 | return err; | |
| 99 | } | |
| 100 | ||
| 101 | int mtdtest_write(struct mtd_info *mtd, loff_t addr, size_t size, | |
| 102 | const void *buf) | |
| 103 | { | |
| 104 | size_t written; | |
| 105 | int err; | |
| 106 | ||
| 107 | err = mtd_write(mtd, addr, size, &written, buf); | |
| 108 | if (!err && written != size) | |
| 109 | err = -EIO; | |
| 8a9f4aa3 AM |
110 | if (err) |
| 111 | pr_err("error: write failed at %#llx\n", addr); | |
| 084db4b0 AM |
112 | |
| 113 | return err; | |
| 114 | } |