blob: 34736bbcc07be0f622e836f5872d1f830df96cb4 [file] [log] [blame]
Akinobu Mita084db4b2013-08-03 18:52:07 +09001#define pr_fmt(fmt) "mtd_test: " fmt
2
Akinobu Mita084db4b2013-08-03 18:52:07 +09003#include <linux/module.h>
4#include <linux/sched.h>
5#include <linux/printk.h>
6
7#include "mtd_test.h"
8
9int mtdtest_erase_eraseblock(struct mtd_info *mtd, unsigned int ebnum)
10{
11 int err;
12 struct erase_info ei;
Brian Norris1001ff72014-07-21 19:07:12 -070013 loff_t addr = (loff_t)ebnum * mtd->erasesize;
Akinobu Mita084db4b2013-08-03 18:52:07 +090014
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
33static int is_block_bad(struct mtd_info *mtd, unsigned int ebnum)
34{
35 int ret;
Brian Norris1001ff72014-07-21 19:07:12 -070036 loff_t addr = (loff_t)ebnum * mtd->erasesize;
Akinobu Mita084db4b2013-08-03 18:52:07 +090037
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
45int 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
65int 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
83int 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;
Akinobu Mitaabc173a2013-08-15 22:55:08 +090094 if (err)
95 pr_err("error: read failed at %#llx\n", addr);
Akinobu Mita084db4b2013-08-03 18:52:07 +090096
97 return err;
98}
99
100int 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;
Akinobu Mita8a9f4aa2013-08-15 22:55:09 +0900109 if (err)
110 pr_err("error: write failed at %#llx\n", addr);
Akinobu Mita084db4b2013-08-03 18:52:07 +0900111
112 return err;
113}