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e73f2174 AB |
1 | /* |
2 | * Copyright (C) 2006-2008 Nokia Corporation | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License version 2 as published by | |
6 | * the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; see the file COPYING. If not, write to the Free Software | |
15 | * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
16 | * | |
17 | * Test page read and write on MTD device. | |
18 | * | |
19 | * Author: Adrian Hunter <ext-adrian.hunter@nokia.com> | |
20 | */ | |
21 | ||
22 | #include <asm/div64.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
26 | #include <linux/err.h> | |
27 | #include <linux/mtd/mtd.h> | |
5a0e3ad6 | 28 | #include <linux/slab.h> |
e73f2174 AB |
29 | #include <linux/sched.h> |
30 | ||
31 | #define PRINT_PREF KERN_INFO "mtd_pagetest: " | |
32 | ||
7406060e | 33 | static int dev = -EINVAL; |
e73f2174 AB |
34 | module_param(dev, int, S_IRUGO); |
35 | MODULE_PARM_DESC(dev, "MTD device number to use"); | |
36 | ||
37 | static struct mtd_info *mtd; | |
38 | static unsigned char *twopages; | |
39 | static unsigned char *writebuf; | |
40 | static unsigned char *boundary; | |
41 | static unsigned char *bbt; | |
42 | ||
43 | static int pgsize; | |
44 | static int bufsize; | |
45 | static int ebcnt; | |
46 | static int pgcnt; | |
47 | static int errcnt; | |
48 | static unsigned long next = 1; | |
49 | ||
50 | static inline unsigned int simple_rand(void) | |
51 | { | |
52 | next = next * 1103515245 + 12345; | |
53 | return (unsigned int)((next / 65536) % 32768); | |
54 | } | |
55 | ||
56 | static inline void simple_srand(unsigned long seed) | |
57 | { | |
58 | next = seed; | |
59 | } | |
60 | ||
61 | static void set_random_data(unsigned char *buf, size_t len) | |
62 | { | |
63 | size_t i; | |
64 | ||
65 | for (i = 0; i < len; ++i) | |
66 | buf[i] = simple_rand(); | |
67 | } | |
68 | ||
69 | static int erase_eraseblock(int ebnum) | |
70 | { | |
71 | int err; | |
72 | struct erase_info ei; | |
73 | loff_t addr = ebnum * mtd->erasesize; | |
74 | ||
75 | memset(&ei, 0, sizeof(struct erase_info)); | |
76 | ei.mtd = mtd; | |
77 | ei.addr = addr; | |
78 | ei.len = mtd->erasesize; | |
79 | ||
7e1f0dc0 | 80 | err = mtd_erase(mtd, &ei); |
e73f2174 AB |
81 | if (err) { |
82 | printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum); | |
83 | return err; | |
84 | } | |
85 | ||
86 | if (ei.state == MTD_ERASE_FAILED) { | |
87 | printk(PRINT_PREF "some erase error occurred at EB %d\n", | |
88 | ebnum); | |
89 | return -EIO; | |
90 | } | |
91 | ||
92 | return 0; | |
93 | } | |
94 | ||
95 | static int write_eraseblock(int ebnum) | |
96 | { | |
97 | int err = 0; | |
98 | size_t written = 0; | |
99 | loff_t addr = ebnum * mtd->erasesize; | |
100 | ||
101 | set_random_data(writebuf, mtd->erasesize); | |
102 | cond_resched(); | |
eda95cbf | 103 | err = mtd_write(mtd, addr, mtd->erasesize, &written, writebuf); |
e73f2174 AB |
104 | if (err || written != mtd->erasesize) |
105 | printk(PRINT_PREF "error: write failed at %#llx\n", | |
106 | (long long)addr); | |
107 | ||
108 | return err; | |
109 | } | |
110 | ||
111 | static int verify_eraseblock(int ebnum) | |
112 | { | |
113 | uint32_t j; | |
114 | size_t read = 0; | |
115 | int err = 0, i; | |
116 | loff_t addr0, addrn; | |
117 | loff_t addr = ebnum * mtd->erasesize; | |
118 | ||
119 | addr0 = 0; | |
c6f7e7be | 120 | for (i = 0; i < ebcnt && bbt[i]; ++i) |
e73f2174 AB |
121 | addr0 += mtd->erasesize; |
122 | ||
123 | addrn = mtd->size; | |
c6f7e7be | 124 | for (i = 0; i < ebcnt && bbt[ebcnt - i - 1]; ++i) |
e73f2174 AB |
125 | addrn -= mtd->erasesize; |
126 | ||
127 | set_random_data(writebuf, mtd->erasesize); | |
128 | for (j = 0; j < pgcnt - 1; ++j, addr += pgsize) { | |
129 | /* Do a read to set the internal dataRAMs to different data */ | |
329ad399 | 130 | err = mtd_read(mtd, addr0, bufsize, &read, twopages); |
d57f4054 | 131 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
132 | err = 0; |
133 | if (err || read != bufsize) { | |
134 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
135 | (long long)addr0); | |
136 | return err; | |
137 | } | |
329ad399 | 138 | err = mtd_read(mtd, addrn - bufsize, bufsize, &read, twopages); |
d57f4054 | 139 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
140 | err = 0; |
141 | if (err || read != bufsize) { | |
142 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
143 | (long long)(addrn - bufsize)); | |
144 | return err; | |
145 | } | |
146 | memset(twopages, 0, bufsize); | |
147 | read = 0; | |
329ad399 | 148 | err = mtd_read(mtd, addr, bufsize, &read, twopages); |
d57f4054 | 149 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
150 | err = 0; |
151 | if (err || read != bufsize) { | |
152 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
153 | (long long)addr); | |
154 | break; | |
155 | } | |
156 | if (memcmp(twopages, writebuf + (j * pgsize), bufsize)) { | |
157 | printk(PRINT_PREF "error: verify failed at %#llx\n", | |
158 | (long long)addr); | |
159 | errcnt += 1; | |
160 | } | |
161 | } | |
162 | /* Check boundary between eraseblocks */ | |
163 | if (addr <= addrn - pgsize - pgsize && !bbt[ebnum + 1]) { | |
164 | unsigned long oldnext = next; | |
165 | /* Do a read to set the internal dataRAMs to different data */ | |
329ad399 | 166 | err = mtd_read(mtd, addr0, bufsize, &read, twopages); |
d57f4054 | 167 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
168 | err = 0; |
169 | if (err || read != bufsize) { | |
170 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
171 | (long long)addr0); | |
172 | return err; | |
173 | } | |
329ad399 | 174 | err = mtd_read(mtd, addrn - bufsize, bufsize, &read, twopages); |
d57f4054 | 175 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
176 | err = 0; |
177 | if (err || read != bufsize) { | |
178 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
179 | (long long)(addrn - bufsize)); | |
180 | return err; | |
181 | } | |
182 | memset(twopages, 0, bufsize); | |
183 | read = 0; | |
329ad399 | 184 | err = mtd_read(mtd, addr, bufsize, &read, twopages); |
d57f4054 | 185 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
186 | err = 0; |
187 | if (err || read != bufsize) { | |
188 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
189 | (long long)addr); | |
190 | return err; | |
191 | } | |
192 | memcpy(boundary, writebuf + mtd->erasesize - pgsize, pgsize); | |
193 | set_random_data(boundary + pgsize, pgsize); | |
194 | if (memcmp(twopages, boundary, bufsize)) { | |
195 | printk(PRINT_PREF "error: verify failed at %#llx\n", | |
196 | (long long)addr); | |
197 | errcnt += 1; | |
198 | } | |
199 | next = oldnext; | |
200 | } | |
201 | return err; | |
202 | } | |
203 | ||
204 | static int crosstest(void) | |
205 | { | |
206 | size_t read = 0; | |
207 | int err = 0, i; | |
208 | loff_t addr, addr0, addrn; | |
209 | unsigned char *pp1, *pp2, *pp3, *pp4; | |
210 | ||
211 | printk(PRINT_PREF "crosstest\n"); | |
212 | pp1 = kmalloc(pgsize * 4, GFP_KERNEL); | |
213 | if (!pp1) { | |
214 | printk(PRINT_PREF "error: cannot allocate memory\n"); | |
215 | return -ENOMEM; | |
216 | } | |
217 | pp2 = pp1 + pgsize; | |
218 | pp3 = pp2 + pgsize; | |
219 | pp4 = pp3 + pgsize; | |
220 | memset(pp1, 0, pgsize * 4); | |
221 | ||
222 | addr0 = 0; | |
c6f7e7be | 223 | for (i = 0; i < ebcnt && bbt[i]; ++i) |
e73f2174 AB |
224 | addr0 += mtd->erasesize; |
225 | ||
226 | addrn = mtd->size; | |
c6f7e7be | 227 | for (i = 0; i < ebcnt && bbt[ebcnt - i - 1]; ++i) |
e73f2174 AB |
228 | addrn -= mtd->erasesize; |
229 | ||
230 | /* Read 2nd-to-last page to pp1 */ | |
231 | read = 0; | |
232 | addr = addrn - pgsize - pgsize; | |
329ad399 | 233 | err = mtd_read(mtd, addr, pgsize, &read, pp1); |
d57f4054 | 234 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
235 | err = 0; |
236 | if (err || read != pgsize) { | |
237 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
238 | (long long)addr); | |
239 | kfree(pp1); | |
240 | return err; | |
241 | } | |
242 | ||
243 | /* Read 3rd-to-last page to pp1 */ | |
244 | read = 0; | |
245 | addr = addrn - pgsize - pgsize - pgsize; | |
329ad399 | 246 | err = mtd_read(mtd, addr, pgsize, &read, pp1); |
d57f4054 | 247 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
248 | err = 0; |
249 | if (err || read != pgsize) { | |
250 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
251 | (long long)addr); | |
252 | kfree(pp1); | |
253 | return err; | |
254 | } | |
255 | ||
256 | /* Read first page to pp2 */ | |
257 | read = 0; | |
258 | addr = addr0; | |
259 | printk(PRINT_PREF "reading page at %#llx\n", (long long)addr); | |
329ad399 | 260 | err = mtd_read(mtd, addr, pgsize, &read, pp2); |
d57f4054 | 261 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
262 | err = 0; |
263 | if (err || read != pgsize) { | |
264 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
265 | (long long)addr); | |
266 | kfree(pp1); | |
267 | return err; | |
268 | } | |
269 | ||
270 | /* Read last page to pp3 */ | |
271 | read = 0; | |
272 | addr = addrn - pgsize; | |
273 | printk(PRINT_PREF "reading page at %#llx\n", (long long)addr); | |
329ad399 | 274 | err = mtd_read(mtd, addr, pgsize, &read, pp3); |
d57f4054 | 275 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
276 | err = 0; |
277 | if (err || read != pgsize) { | |
278 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
279 | (long long)addr); | |
280 | kfree(pp1); | |
281 | return err; | |
282 | } | |
283 | ||
284 | /* Read first page again to pp4 */ | |
285 | read = 0; | |
286 | addr = addr0; | |
287 | printk(PRINT_PREF "reading page at %#llx\n", (long long)addr); | |
329ad399 | 288 | err = mtd_read(mtd, addr, pgsize, &read, pp4); |
d57f4054 | 289 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
290 | err = 0; |
291 | if (err || read != pgsize) { | |
292 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
293 | (long long)addr); | |
294 | kfree(pp1); | |
295 | return err; | |
296 | } | |
297 | ||
298 | /* pp2 and pp4 should be the same */ | |
299 | printk(PRINT_PREF "verifying pages read at %#llx match\n", | |
300 | (long long)addr0); | |
301 | if (memcmp(pp2, pp4, pgsize)) { | |
302 | printk(PRINT_PREF "verify failed!\n"); | |
303 | errcnt += 1; | |
304 | } else if (!err) | |
305 | printk(PRINT_PREF "crosstest ok\n"); | |
306 | kfree(pp1); | |
307 | return err; | |
308 | } | |
309 | ||
310 | static int erasecrosstest(void) | |
311 | { | |
312 | size_t read = 0, written = 0; | |
7fc14bce | 313 | int err = 0, i, ebnum, ebnum2; |
e73f2174 AB |
314 | loff_t addr0; |
315 | char *readbuf = twopages; | |
316 | ||
317 | printk(PRINT_PREF "erasecrosstest\n"); | |
318 | ||
319 | ebnum = 0; | |
320 | addr0 = 0; | |
c6f7e7be | 321 | for (i = 0; i < ebcnt && bbt[i]; ++i) { |
e73f2174 AB |
322 | addr0 += mtd->erasesize; |
323 | ebnum += 1; | |
324 | } | |
325 | ||
326 | ebnum2 = ebcnt - 1; | |
327 | while (ebnum2 && bbt[ebnum2]) | |
328 | ebnum2 -= 1; | |
329 | ||
330 | printk(PRINT_PREF "erasing block %d\n", ebnum); | |
331 | err = erase_eraseblock(ebnum); | |
332 | if (err) | |
333 | return err; | |
334 | ||
335 | printk(PRINT_PREF "writing 1st page of block %d\n", ebnum); | |
336 | set_random_data(writebuf, pgsize); | |
337 | strcpy(writebuf, "There is no data like this!"); | |
eda95cbf | 338 | err = mtd_write(mtd, addr0, pgsize, &written, writebuf); |
e73f2174 AB |
339 | if (err || written != pgsize) { |
340 | printk(PRINT_PREF "error: write failed at %#llx\n", | |
341 | (long long)addr0); | |
342 | return err ? err : -1; | |
343 | } | |
344 | ||
345 | printk(PRINT_PREF "reading 1st page of block %d\n", ebnum); | |
346 | memset(readbuf, 0, pgsize); | |
329ad399 | 347 | err = mtd_read(mtd, addr0, pgsize, &read, readbuf); |
d57f4054 | 348 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
349 | err = 0; |
350 | if (err || read != pgsize) { | |
351 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
352 | (long long)addr0); | |
353 | return err ? err : -1; | |
354 | } | |
355 | ||
356 | printk(PRINT_PREF "verifying 1st page of block %d\n", ebnum); | |
357 | if (memcmp(writebuf, readbuf, pgsize)) { | |
358 | printk(PRINT_PREF "verify failed!\n"); | |
359 | errcnt += 1; | |
7fc14bce | 360 | return -1; |
e73f2174 AB |
361 | } |
362 | ||
363 | printk(PRINT_PREF "erasing block %d\n", ebnum); | |
364 | err = erase_eraseblock(ebnum); | |
365 | if (err) | |
366 | return err; | |
367 | ||
368 | printk(PRINT_PREF "writing 1st page of block %d\n", ebnum); | |
369 | set_random_data(writebuf, pgsize); | |
370 | strcpy(writebuf, "There is no data like this!"); | |
eda95cbf | 371 | err = mtd_write(mtd, addr0, pgsize, &written, writebuf); |
e73f2174 AB |
372 | if (err || written != pgsize) { |
373 | printk(PRINT_PREF "error: write failed at %#llx\n", | |
374 | (long long)addr0); | |
375 | return err ? err : -1; | |
376 | } | |
377 | ||
378 | printk(PRINT_PREF "erasing block %d\n", ebnum2); | |
379 | err = erase_eraseblock(ebnum2); | |
380 | if (err) | |
381 | return err; | |
382 | ||
383 | printk(PRINT_PREF "reading 1st page of block %d\n", ebnum); | |
384 | memset(readbuf, 0, pgsize); | |
329ad399 | 385 | err = mtd_read(mtd, addr0, pgsize, &read, readbuf); |
d57f4054 | 386 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
387 | err = 0; |
388 | if (err || read != pgsize) { | |
389 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
390 | (long long)addr0); | |
391 | return err ? err : -1; | |
392 | } | |
393 | ||
394 | printk(PRINT_PREF "verifying 1st page of block %d\n", ebnum); | |
395 | if (memcmp(writebuf, readbuf, pgsize)) { | |
396 | printk(PRINT_PREF "verify failed!\n"); | |
397 | errcnt += 1; | |
7fc14bce | 398 | return -1; |
e73f2174 AB |
399 | } |
400 | ||
7fc14bce | 401 | if (!err) |
e73f2174 AB |
402 | printk(PRINT_PREF "erasecrosstest ok\n"); |
403 | return err; | |
404 | } | |
405 | ||
406 | static int erasetest(void) | |
407 | { | |
408 | size_t read = 0, written = 0; | |
409 | int err = 0, i, ebnum, ok = 1; | |
410 | loff_t addr0; | |
411 | ||
412 | printk(PRINT_PREF "erasetest\n"); | |
413 | ||
414 | ebnum = 0; | |
415 | addr0 = 0; | |
c6f7e7be | 416 | for (i = 0; i < ebcnt && bbt[i]; ++i) { |
e73f2174 AB |
417 | addr0 += mtd->erasesize; |
418 | ebnum += 1; | |
419 | } | |
420 | ||
421 | printk(PRINT_PREF "erasing block %d\n", ebnum); | |
422 | err = erase_eraseblock(ebnum); | |
423 | if (err) | |
424 | return err; | |
425 | ||
426 | printk(PRINT_PREF "writing 1st page of block %d\n", ebnum); | |
427 | set_random_data(writebuf, pgsize); | |
eda95cbf | 428 | err = mtd_write(mtd, addr0, pgsize, &written, writebuf); |
e73f2174 AB |
429 | if (err || written != pgsize) { |
430 | printk(PRINT_PREF "error: write failed at %#llx\n", | |
431 | (long long)addr0); | |
432 | return err ? err : -1; | |
433 | } | |
434 | ||
435 | printk(PRINT_PREF "erasing block %d\n", ebnum); | |
436 | err = erase_eraseblock(ebnum); | |
437 | if (err) | |
438 | return err; | |
439 | ||
440 | printk(PRINT_PREF "reading 1st page of block %d\n", ebnum); | |
329ad399 | 441 | err = mtd_read(mtd, addr0, pgsize, &read, twopages); |
d57f4054 | 442 | if (mtd_is_bitflip(err)) |
e73f2174 AB |
443 | err = 0; |
444 | if (err || read != pgsize) { | |
445 | printk(PRINT_PREF "error: read failed at %#llx\n", | |
446 | (long long)addr0); | |
447 | return err ? err : -1; | |
448 | } | |
449 | ||
450 | printk(PRINT_PREF "verifying 1st page of block %d is all 0xff\n", | |
451 | ebnum); | |
452 | for (i = 0; i < pgsize; ++i) | |
453 | if (twopages[i] != 0xff) { | |
454 | printk(PRINT_PREF "verifying all 0xff failed at %d\n", | |
455 | i); | |
456 | errcnt += 1; | |
457 | ok = 0; | |
458 | break; | |
459 | } | |
460 | ||
461 | if (ok && !err) | |
462 | printk(PRINT_PREF "erasetest ok\n"); | |
463 | ||
464 | return err; | |
465 | } | |
466 | ||
467 | static int is_block_bad(int ebnum) | |
468 | { | |
469 | loff_t addr = ebnum * mtd->erasesize; | |
470 | int ret; | |
471 | ||
7086c19d | 472 | ret = mtd_block_isbad(mtd, addr); |
e73f2174 AB |
473 | if (ret) |
474 | printk(PRINT_PREF "block %d is bad\n", ebnum); | |
475 | return ret; | |
476 | } | |
477 | ||
478 | static int scan_for_bad_eraseblocks(void) | |
479 | { | |
480 | int i, bad = 0; | |
481 | ||
2bfefa4c | 482 | bbt = kzalloc(ebcnt, GFP_KERNEL); |
e73f2174 AB |
483 | if (!bbt) { |
484 | printk(PRINT_PREF "error: cannot allocate memory\n"); | |
485 | return -ENOMEM; | |
486 | } | |
e73f2174 AB |
487 | |
488 | printk(PRINT_PREF "scanning for bad eraseblocks\n"); | |
489 | for (i = 0; i < ebcnt; ++i) { | |
490 | bbt[i] = is_block_bad(i) ? 1 : 0; | |
491 | if (bbt[i]) | |
492 | bad += 1; | |
493 | cond_resched(); | |
494 | } | |
495 | printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad); | |
496 | return 0; | |
497 | } | |
498 | ||
499 | static int __init mtd_pagetest_init(void) | |
500 | { | |
501 | int err = 0; | |
502 | uint64_t tmp; | |
503 | uint32_t i; | |
504 | ||
505 | printk(KERN_INFO "\n"); | |
506 | printk(KERN_INFO "=================================================\n"); | |
7406060e WS |
507 | |
508 | if (dev < 0) { | |
509 | printk(PRINT_PREF "Please specify a valid mtd-device via module paramter\n"); | |
510 | printk(KERN_CRIT "CAREFUL: This test wipes all data on the specified MTD device!\n"); | |
511 | return -EINVAL; | |
512 | } | |
513 | ||
e73f2174 AB |
514 | printk(PRINT_PREF "MTD device: %d\n", dev); |
515 | ||
516 | mtd = get_mtd_device(NULL, dev); | |
517 | if (IS_ERR(mtd)) { | |
518 | err = PTR_ERR(mtd); | |
519 | printk(PRINT_PREF "error: cannot get MTD device\n"); | |
520 | return err; | |
521 | } | |
522 | ||
523 | if (mtd->type != MTD_NANDFLASH) { | |
524 | printk(PRINT_PREF "this test requires NAND flash\n"); | |
525 | goto out; | |
526 | } | |
527 | ||
528 | tmp = mtd->size; | |
529 | do_div(tmp, mtd->erasesize); | |
530 | ebcnt = tmp; | |
531 | pgcnt = mtd->erasesize / mtd->writesize; | |
4c2b8a62 | 532 | pgsize = mtd->writesize; |
e73f2174 AB |
533 | |
534 | printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, " | |
535 | "page size %u, count of eraseblocks %u, pages per " | |
536 | "eraseblock %u, OOB size %u\n", | |
537 | (unsigned long long)mtd->size, mtd->erasesize, | |
538 | pgsize, ebcnt, pgcnt, mtd->oobsize); | |
539 | ||
540 | err = -ENOMEM; | |
541 | bufsize = pgsize * 2; | |
542 | writebuf = kmalloc(mtd->erasesize, GFP_KERNEL); | |
543 | if (!writebuf) { | |
544 | printk(PRINT_PREF "error: cannot allocate memory\n"); | |
545 | goto out; | |
546 | } | |
547 | twopages = kmalloc(bufsize, GFP_KERNEL); | |
548 | if (!twopages) { | |
549 | printk(PRINT_PREF "error: cannot allocate memory\n"); | |
550 | goto out; | |
551 | } | |
552 | boundary = kmalloc(bufsize, GFP_KERNEL); | |
553 | if (!boundary) { | |
554 | printk(PRINT_PREF "error: cannot allocate memory\n"); | |
555 | goto out; | |
556 | } | |
557 | ||
558 | err = scan_for_bad_eraseblocks(); | |
559 | if (err) | |
560 | goto out; | |
561 | ||
562 | /* Erase all eraseblocks */ | |
563 | printk(PRINT_PREF "erasing whole device\n"); | |
564 | for (i = 0; i < ebcnt; ++i) { | |
565 | if (bbt[i]) | |
566 | continue; | |
567 | err = erase_eraseblock(i); | |
568 | if (err) | |
569 | goto out; | |
570 | cond_resched(); | |
571 | } | |
572 | printk(PRINT_PREF "erased %u eraseblocks\n", i); | |
573 | ||
574 | /* Write all eraseblocks */ | |
575 | simple_srand(1); | |
576 | printk(PRINT_PREF "writing whole device\n"); | |
577 | for (i = 0; i < ebcnt; ++i) { | |
578 | if (bbt[i]) | |
579 | continue; | |
580 | err = write_eraseblock(i); | |
581 | if (err) | |
582 | goto out; | |
583 | if (i % 256 == 0) | |
584 | printk(PRINT_PREF "written up to eraseblock %u\n", i); | |
585 | cond_resched(); | |
586 | } | |
587 | printk(PRINT_PREF "written %u eraseblocks\n", i); | |
588 | ||
589 | /* Check all eraseblocks */ | |
590 | simple_srand(1); | |
591 | printk(PRINT_PREF "verifying all eraseblocks\n"); | |
592 | for (i = 0; i < ebcnt; ++i) { | |
593 | if (bbt[i]) | |
594 | continue; | |
595 | err = verify_eraseblock(i); | |
596 | if (err) | |
597 | goto out; | |
598 | if (i % 256 == 0) | |
599 | printk(PRINT_PREF "verified up to eraseblock %u\n", i); | |
600 | cond_resched(); | |
601 | } | |
602 | printk(PRINT_PREF "verified %u eraseblocks\n", i); | |
603 | ||
604 | err = crosstest(); | |
605 | if (err) | |
606 | goto out; | |
607 | ||
608 | err = erasecrosstest(); | |
609 | if (err) | |
610 | goto out; | |
611 | ||
612 | err = erasetest(); | |
613 | if (err) | |
614 | goto out; | |
615 | ||
616 | printk(PRINT_PREF "finished with %d errors\n", errcnt); | |
617 | out: | |
618 | ||
619 | kfree(bbt); | |
620 | kfree(boundary); | |
621 | kfree(twopages); | |
622 | kfree(writebuf); | |
623 | put_mtd_device(mtd); | |
624 | if (err) | |
625 | printk(PRINT_PREF "error %d occurred\n", err); | |
626 | printk(KERN_INFO "=================================================\n"); | |
627 | return err; | |
628 | } | |
629 | module_init(mtd_pagetest_init); | |
630 | ||
631 | static void __exit mtd_pagetest_exit(void) | |
632 | { | |
633 | return; | |
634 | } | |
635 | module_exit(mtd_pagetest_exit); | |
636 | ||
637 | MODULE_DESCRIPTION("NAND page test"); | |
638 | MODULE_AUTHOR("Adrian Hunter"); | |
639 | MODULE_LICENSE("GPL"); |