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