Commit | Line | Data |
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88ae600d PO |
1 | /* |
2 | * linux/drivers/mmc/card/mmc_test.c | |
3 | * | |
0121a982 | 4 | * Copyright 2007-2008 Pierre Ossman |
88ae600d PO |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or (at | |
9 | * your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/mmc/core.h> | |
13 | #include <linux/mmc/card.h> | |
14 | #include <linux/mmc/host.h> | |
15 | #include <linux/mmc/mmc.h> | |
16 | ||
17 | #include <linux/scatterlist.h> | |
18 | ||
19 | #define RESULT_OK 0 | |
20 | #define RESULT_FAIL 1 | |
21 | #define RESULT_UNSUP_HOST 2 | |
22 | #define RESULT_UNSUP_CARD 3 | |
23 | ||
2661081f PO |
24 | #define BUFFER_ORDER 2 |
25 | #define BUFFER_SIZE (PAGE_SIZE << BUFFER_ORDER) | |
88ae600d PO |
26 | |
27 | struct mmc_test_card { | |
28 | struct mmc_card *card; | |
29 | ||
6b174931 | 30 | u8 scratch[BUFFER_SIZE]; |
88ae600d | 31 | u8 *buffer; |
2661081f PO |
32 | #ifdef CONFIG_HIGHMEM |
33 | struct page *highmem; | |
34 | #endif | |
88ae600d PO |
35 | }; |
36 | ||
37 | /*******************************************************************/ | |
6b174931 | 38 | /* General helper functions */ |
88ae600d PO |
39 | /*******************************************************************/ |
40 | ||
6b174931 PO |
41 | /* |
42 | * Configure correct block size in card | |
43 | */ | |
88ae600d PO |
44 | static int mmc_test_set_blksize(struct mmc_test_card *test, unsigned size) |
45 | { | |
46 | struct mmc_command cmd; | |
47 | int ret; | |
48 | ||
49 | cmd.opcode = MMC_SET_BLOCKLEN; | |
50 | cmd.arg = size; | |
51 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
52 | ret = mmc_wait_for_cmd(test->card->host, &cmd, 0); | |
53 | if (ret) | |
54 | return ret; | |
55 | ||
56 | return 0; | |
57 | } | |
58 | ||
6b174931 PO |
59 | /* |
60 | * Fill in the mmc_request structure given a set of transfer parameters. | |
61 | */ | |
62 | static void mmc_test_prepare_mrq(struct mmc_test_card *test, | |
63 | struct mmc_request *mrq, struct scatterlist *sg, unsigned sg_len, | |
64 | unsigned dev_addr, unsigned blocks, unsigned blksz, int write) | |
88ae600d | 65 | { |
6b174931 | 66 | BUG_ON(!mrq || !mrq->cmd || !mrq->data || !mrq->stop); |
88ae600d | 67 | |
6b174931 PO |
68 | if (blocks > 1) { |
69 | mrq->cmd->opcode = write ? | |
70 | MMC_WRITE_MULTIPLE_BLOCK : MMC_READ_MULTIPLE_BLOCK; | |
88ae600d | 71 | } else { |
6b174931 PO |
72 | mrq->cmd->opcode = write ? |
73 | MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK; | |
88ae600d PO |
74 | } |
75 | ||
6b174931 PO |
76 | mrq->cmd->arg = dev_addr; |
77 | mrq->cmd->flags = MMC_RSP_R1 | MMC_CMD_ADTC; | |
88ae600d | 78 | |
6b174931 PO |
79 | if (blocks == 1) |
80 | mrq->stop = NULL; | |
81 | else { | |
82 | mrq->stop->opcode = MMC_STOP_TRANSMISSION; | |
83 | mrq->stop->arg = 0; | |
84 | mrq->stop->flags = MMC_RSP_R1B | MMC_CMD_AC; | |
88ae600d PO |
85 | } |
86 | ||
6b174931 PO |
87 | mrq->data->blksz = blksz; |
88 | mrq->data->blocks = blocks; | |
89 | mrq->data->flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; | |
90 | mrq->data->sg = sg; | |
91 | mrq->data->sg_len = sg_len; | |
88ae600d | 92 | |
6b174931 PO |
93 | mmc_set_data_timeout(mrq->data, test->card); |
94 | } | |
88ae600d | 95 | |
6b174931 PO |
96 | /* |
97 | * Wait for the card to finish the busy state | |
98 | */ | |
99 | static int mmc_test_wait_busy(struct mmc_test_card *test) | |
100 | { | |
101 | int ret, busy; | |
102 | struct mmc_command cmd; | |
88ae600d PO |
103 | |
104 | busy = 0; | |
105 | do { | |
88ae600d PO |
106 | memset(&cmd, 0, sizeof(struct mmc_command)); |
107 | ||
108 | cmd.opcode = MMC_SEND_STATUS; | |
109 | cmd.arg = test->card->rca << 16; | |
110 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
111 | ||
6b174931 PO |
112 | ret = mmc_wait_for_cmd(test->card->host, &cmd, 0); |
113 | if (ret) | |
88ae600d PO |
114 | break; |
115 | ||
116 | if (!busy && !(cmd.resp[0] & R1_READY_FOR_DATA)) { | |
117 | busy = 1; | |
118 | printk(KERN_INFO "%s: Warning: Host did not " | |
119 | "wait for busy state to end.\n", | |
120 | mmc_hostname(test->card->host)); | |
121 | } | |
122 | } while (!(cmd.resp[0] & R1_READY_FOR_DATA)); | |
123 | ||
124 | return ret; | |
125 | } | |
126 | ||
6b174931 PO |
127 | /* |
128 | * Transfer a single sector of kernel addressable data | |
129 | */ | |
130 | static int mmc_test_buffer_transfer(struct mmc_test_card *test, | |
131 | u8 *buffer, unsigned addr, unsigned blksz, int write) | |
88ae600d | 132 | { |
6b174931 PO |
133 | int ret; |
134 | ||
135 | struct mmc_request mrq; | |
136 | struct mmc_command cmd; | |
137 | struct mmc_command stop; | |
138 | struct mmc_data data; | |
139 | ||
140 | struct scatterlist sg; | |
141 | ||
142 | memset(&mrq, 0, sizeof(struct mmc_request)); | |
143 | memset(&cmd, 0, sizeof(struct mmc_command)); | |
144 | memset(&data, 0, sizeof(struct mmc_data)); | |
145 | memset(&stop, 0, sizeof(struct mmc_command)); | |
146 | ||
147 | mrq.cmd = &cmd; | |
148 | mrq.data = &data; | |
149 | mrq.stop = &stop; | |
150 | ||
151 | sg_init_one(&sg, buffer, blksz); | |
152 | ||
153 | mmc_test_prepare_mrq(test, &mrq, &sg, 1, addr, 1, blksz, write); | |
154 | ||
155 | mmc_wait_for_req(test->card->host, &mrq); | |
156 | ||
157 | if (cmd.error) | |
158 | return cmd.error; | |
159 | if (data.error) | |
160 | return data.error; | |
161 | ||
162 | ret = mmc_test_wait_busy(test); | |
163 | if (ret) | |
164 | return ret; | |
165 | ||
166 | return 0; | |
88ae600d PO |
167 | } |
168 | ||
6b174931 PO |
169 | /*******************************************************************/ |
170 | /* Test preparation and cleanup */ | |
171 | /*******************************************************************/ | |
172 | ||
173 | /* | |
174 | * Fill the first couple of sectors of the card with known data | |
175 | * so that bad reads/writes can be detected | |
176 | */ | |
177 | static int __mmc_test_prepare(struct mmc_test_card *test, int write) | |
88ae600d PO |
178 | { |
179 | int ret, i; | |
180 | ||
181 | ret = mmc_test_set_blksize(test, 512); | |
182 | if (ret) | |
183 | return ret; | |
184 | ||
185 | if (write) | |
6b174931 | 186 | memset(test->buffer, 0xDF, 512); |
88ae600d | 187 | else { |
6b174931 | 188 | for (i = 0;i < 512;i++) |
88ae600d PO |
189 | test->buffer[i] = i; |
190 | } | |
191 | ||
192 | for (i = 0;i < BUFFER_SIZE / 512;i++) { | |
6b174931 | 193 | ret = mmc_test_buffer_transfer(test, test->buffer, i * 512, 512, 1); |
88ae600d PO |
194 | if (ret) |
195 | return ret; | |
196 | } | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
6b174931 PO |
201 | static int mmc_test_prepare_write(struct mmc_test_card *test) |
202 | { | |
203 | return __mmc_test_prepare(test, 1); | |
204 | } | |
205 | ||
206 | static int mmc_test_prepare_read(struct mmc_test_card *test) | |
207 | { | |
208 | return __mmc_test_prepare(test, 0); | |
209 | } | |
210 | ||
211 | static int mmc_test_cleanup(struct mmc_test_card *test) | |
212 | { | |
213 | int ret, i; | |
214 | ||
215 | ret = mmc_test_set_blksize(test, 512); | |
216 | if (ret) | |
217 | return ret; | |
218 | ||
219 | memset(test->buffer, 0, 512); | |
220 | ||
221 | for (i = 0;i < BUFFER_SIZE / 512;i++) { | |
222 | ret = mmc_test_buffer_transfer(test, test->buffer, i * 512, 512, 1); | |
223 | if (ret) | |
224 | return ret; | |
225 | } | |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
230 | /*******************************************************************/ | |
231 | /* Test execution helpers */ | |
232 | /*******************************************************************/ | |
233 | ||
234 | /* | |
235 | * Modifies the mmc_request to perform the "short transfer" tests | |
236 | */ | |
237 | static void mmc_test_prepare_broken_mrq(struct mmc_test_card *test, | |
238 | struct mmc_request *mrq, int write) | |
239 | { | |
240 | BUG_ON(!mrq || !mrq->cmd || !mrq->data); | |
241 | ||
242 | if (mrq->data->blocks > 1) { | |
243 | mrq->cmd->opcode = write ? | |
244 | MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK; | |
245 | mrq->stop = NULL; | |
246 | } else { | |
247 | mrq->cmd->opcode = MMC_SEND_STATUS; | |
248 | mrq->cmd->arg = test->card->rca << 16; | |
249 | } | |
250 | } | |
251 | ||
252 | /* | |
253 | * Checks that a normal transfer didn't have any errors | |
254 | */ | |
255 | static int mmc_test_check_result(struct mmc_test_card *test, | |
256 | struct mmc_request *mrq) | |
88ae600d | 257 | { |
6b174931 PO |
258 | int ret; |
259 | ||
260 | BUG_ON(!mrq || !mrq->cmd || !mrq->data); | |
261 | ||
262 | ret = 0; | |
263 | ||
264 | if (!ret && mrq->cmd->error) | |
265 | ret = mrq->cmd->error; | |
266 | if (!ret && mrq->data->error) | |
267 | ret = mrq->data->error; | |
268 | if (!ret && mrq->stop && mrq->stop->error) | |
269 | ret = mrq->stop->error; | |
270 | if (!ret && mrq->data->bytes_xfered != | |
271 | mrq->data->blocks * mrq->data->blksz) | |
272 | ret = RESULT_FAIL; | |
273 | ||
274 | if (ret == -EINVAL) | |
275 | ret = RESULT_UNSUP_HOST; | |
276 | ||
277 | return ret; | |
88ae600d PO |
278 | } |
279 | ||
6b174931 PO |
280 | /* |
281 | * Checks that a "short transfer" behaved as expected | |
282 | */ | |
283 | static int mmc_test_check_broken_result(struct mmc_test_card *test, | |
284 | struct mmc_request *mrq) | |
88ae600d | 285 | { |
6b174931 PO |
286 | int ret; |
287 | ||
288 | BUG_ON(!mrq || !mrq->cmd || !mrq->data); | |
289 | ||
290 | ret = 0; | |
291 | ||
292 | if (!ret && mrq->cmd->error) | |
293 | ret = mrq->cmd->error; | |
294 | if (!ret && mrq->data->error == 0) | |
295 | ret = RESULT_FAIL; | |
296 | if (!ret && mrq->data->error != -ETIMEDOUT) | |
297 | ret = mrq->data->error; | |
298 | if (!ret && mrq->stop && mrq->stop->error) | |
299 | ret = mrq->stop->error; | |
300 | if (mrq->data->blocks > 1) { | |
301 | if (!ret && mrq->data->bytes_xfered > mrq->data->blksz) | |
302 | ret = RESULT_FAIL; | |
303 | } else { | |
304 | if (!ret && mrq->data->bytes_xfered > 0) | |
305 | ret = RESULT_FAIL; | |
306 | } | |
307 | ||
308 | if (ret == -EINVAL) | |
309 | ret = RESULT_UNSUP_HOST; | |
310 | ||
311 | return ret; | |
88ae600d PO |
312 | } |
313 | ||
6b174931 PO |
314 | /* |
315 | * Tests a basic transfer with certain parameters | |
316 | */ | |
317 | static int mmc_test_simple_transfer(struct mmc_test_card *test, | |
318 | struct scatterlist *sg, unsigned sg_len, unsigned dev_addr, | |
319 | unsigned blocks, unsigned blksz, int write) | |
88ae600d | 320 | { |
6b174931 PO |
321 | struct mmc_request mrq; |
322 | struct mmc_command cmd; | |
323 | struct mmc_command stop; | |
324 | struct mmc_data data; | |
88ae600d | 325 | |
6b174931 PO |
326 | memset(&mrq, 0, sizeof(struct mmc_request)); |
327 | memset(&cmd, 0, sizeof(struct mmc_command)); | |
328 | memset(&data, 0, sizeof(struct mmc_data)); | |
329 | memset(&stop, 0, sizeof(struct mmc_command)); | |
330 | ||
331 | mrq.cmd = &cmd; | |
332 | mrq.data = &data; | |
333 | mrq.stop = &stop; | |
334 | ||
335 | mmc_test_prepare_mrq(test, &mrq, sg, sg_len, dev_addr, | |
336 | blocks, blksz, write); | |
337 | ||
338 | mmc_wait_for_req(test->card->host, &mrq); | |
88ae600d | 339 | |
6b174931 PO |
340 | mmc_test_wait_busy(test); |
341 | ||
342 | return mmc_test_check_result(test, &mrq); | |
343 | } | |
344 | ||
345 | /* | |
346 | * Tests a transfer where the card will fail completely or partly | |
347 | */ | |
348 | static int mmc_test_broken_transfer(struct mmc_test_card *test, | |
349 | unsigned blocks, unsigned blksz, int write) | |
350 | { | |
351 | struct mmc_request mrq; | |
352 | struct mmc_command cmd; | |
353 | struct mmc_command stop; | |
354 | struct mmc_data data; | |
355 | ||
356 | struct scatterlist sg; | |
357 | ||
358 | memset(&mrq, 0, sizeof(struct mmc_request)); | |
359 | memset(&cmd, 0, sizeof(struct mmc_command)); | |
360 | memset(&data, 0, sizeof(struct mmc_data)); | |
361 | memset(&stop, 0, sizeof(struct mmc_command)); | |
362 | ||
363 | mrq.cmd = &cmd; | |
364 | mrq.data = &data; | |
365 | mrq.stop = &stop; | |
366 | ||
367 | sg_init_one(&sg, test->buffer, blocks * blksz); | |
368 | ||
369 | mmc_test_prepare_mrq(test, &mrq, &sg, 1, 0, blocks, blksz, write); | |
370 | mmc_test_prepare_broken_mrq(test, &mrq, write); | |
371 | ||
372 | mmc_wait_for_req(test->card->host, &mrq); | |
373 | ||
374 | mmc_test_wait_busy(test); | |
375 | ||
376 | return mmc_test_check_broken_result(test, &mrq); | |
377 | } | |
378 | ||
379 | /* | |
380 | * Does a complete transfer test where data is also validated | |
381 | * | |
382 | * Note: mmc_test_prepare() must have been done before this call | |
383 | */ | |
384 | static int mmc_test_transfer(struct mmc_test_card *test, | |
385 | struct scatterlist *sg, unsigned sg_len, unsigned dev_addr, | |
386 | unsigned blocks, unsigned blksz, int write) | |
387 | { | |
388 | int ret, i; | |
389 | unsigned long flags; | |
88ae600d PO |
390 | |
391 | if (write) { | |
392 | for (i = 0;i < blocks * blksz;i++) | |
6b174931 PO |
393 | test->scratch[i] = i; |
394 | } else { | |
b7ac2cf1 | 395 | memset(test->scratch, 0, BUFFER_SIZE); |
88ae600d | 396 | } |
6b174931 | 397 | local_irq_save(flags); |
b7ac2cf1 | 398 | sg_copy_from_buffer(sg, sg_len, test->scratch, BUFFER_SIZE); |
6b174931 | 399 | local_irq_restore(flags); |
88ae600d PO |
400 | |
401 | ret = mmc_test_set_blksize(test, blksz); | |
402 | if (ret) | |
403 | return ret; | |
404 | ||
6b174931 PO |
405 | ret = mmc_test_simple_transfer(test, sg, sg_len, dev_addr, |
406 | blocks, blksz, write); | |
88ae600d PO |
407 | if (ret) |
408 | return ret; | |
409 | ||
410 | if (write) { | |
6b174931 PO |
411 | int sectors; |
412 | ||
88ae600d PO |
413 | ret = mmc_test_set_blksize(test, 512); |
414 | if (ret) | |
415 | return ret; | |
416 | ||
417 | sectors = (blocks * blksz + 511) / 512; | |
418 | if ((sectors * 512) == (blocks * blksz)) | |
419 | sectors++; | |
420 | ||
421 | if ((sectors * 512) > BUFFER_SIZE) | |
422 | return -EINVAL; | |
423 | ||
424 | memset(test->buffer, 0, sectors * 512); | |
425 | ||
426 | for (i = 0;i < sectors;i++) { | |
6b174931 | 427 | ret = mmc_test_buffer_transfer(test, |
88ae600d | 428 | test->buffer + i * 512, |
6b174931 | 429 | dev_addr + i * 512, 512, 0); |
88ae600d PO |
430 | if (ret) |
431 | return ret; | |
432 | } | |
433 | ||
434 | for (i = 0;i < blocks * blksz;i++) { | |
435 | if (test->buffer[i] != (u8)i) | |
436 | return RESULT_FAIL; | |
437 | } | |
438 | ||
439 | for (;i < sectors * 512;i++) { | |
440 | if (test->buffer[i] != 0xDF) | |
441 | return RESULT_FAIL; | |
442 | } | |
443 | } else { | |
6b174931 | 444 | local_irq_save(flags); |
b7ac2cf1 | 445 | sg_copy_to_buffer(sg, sg_len, test->scratch, BUFFER_SIZE); |
6b174931 | 446 | local_irq_restore(flags); |
88ae600d | 447 | for (i = 0;i < blocks * blksz;i++) { |
6b174931 | 448 | if (test->scratch[i] != (u8)i) |
88ae600d PO |
449 | return RESULT_FAIL; |
450 | } | |
451 | } | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
88ae600d PO |
456 | /*******************************************************************/ |
457 | /* Tests */ | |
458 | /*******************************************************************/ | |
459 | ||
460 | struct mmc_test_case { | |
461 | const char *name; | |
462 | ||
463 | int (*prepare)(struct mmc_test_card *); | |
464 | int (*run)(struct mmc_test_card *); | |
465 | int (*cleanup)(struct mmc_test_card *); | |
466 | }; | |
467 | ||
468 | static int mmc_test_basic_write(struct mmc_test_card *test) | |
469 | { | |
470 | int ret; | |
6b174931 | 471 | struct scatterlist sg; |
88ae600d PO |
472 | |
473 | ret = mmc_test_set_blksize(test, 512); | |
474 | if (ret) | |
475 | return ret; | |
476 | ||
6b174931 PO |
477 | sg_init_one(&sg, test->buffer, 512); |
478 | ||
479 | ret = mmc_test_simple_transfer(test, &sg, 1, 0, 1, 512, 1); | |
88ae600d PO |
480 | if (ret) |
481 | return ret; | |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
486 | static int mmc_test_basic_read(struct mmc_test_card *test) | |
487 | { | |
488 | int ret; | |
6b174931 | 489 | struct scatterlist sg; |
88ae600d PO |
490 | |
491 | ret = mmc_test_set_blksize(test, 512); | |
492 | if (ret) | |
493 | return ret; | |
494 | ||
6b174931 PO |
495 | sg_init_one(&sg, test->buffer, 512); |
496 | ||
58a5dd3e | 497 | ret = mmc_test_simple_transfer(test, &sg, 1, 0, 1, 512, 0); |
88ae600d PO |
498 | if (ret) |
499 | return ret; | |
500 | ||
501 | return 0; | |
502 | } | |
503 | ||
504 | static int mmc_test_verify_write(struct mmc_test_card *test) | |
505 | { | |
506 | int ret; | |
6b174931 PO |
507 | struct scatterlist sg; |
508 | ||
509 | sg_init_one(&sg, test->buffer, 512); | |
88ae600d | 510 | |
6b174931 | 511 | ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1); |
88ae600d PO |
512 | if (ret) |
513 | return ret; | |
514 | ||
515 | return 0; | |
516 | } | |
517 | ||
518 | static int mmc_test_verify_read(struct mmc_test_card *test) | |
519 | { | |
520 | int ret; | |
6b174931 PO |
521 | struct scatterlist sg; |
522 | ||
523 | sg_init_one(&sg, test->buffer, 512); | |
88ae600d | 524 | |
6b174931 | 525 | ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0); |
88ae600d PO |
526 | if (ret) |
527 | return ret; | |
528 | ||
529 | return 0; | |
530 | } | |
531 | ||
532 | static int mmc_test_multi_write(struct mmc_test_card *test) | |
533 | { | |
534 | int ret; | |
535 | unsigned int size; | |
6b174931 | 536 | struct scatterlist sg; |
88ae600d PO |
537 | |
538 | if (test->card->host->max_blk_count == 1) | |
539 | return RESULT_UNSUP_HOST; | |
540 | ||
541 | size = PAGE_SIZE * 2; | |
542 | size = min(size, test->card->host->max_req_size); | |
543 | size = min(size, test->card->host->max_seg_size); | |
544 | size = min(size, test->card->host->max_blk_count * 512); | |
545 | ||
546 | if (size < 1024) | |
547 | return RESULT_UNSUP_HOST; | |
548 | ||
6b174931 PO |
549 | sg_init_one(&sg, test->buffer, size); |
550 | ||
551 | ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1); | |
88ae600d PO |
552 | if (ret) |
553 | return ret; | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
558 | static int mmc_test_multi_read(struct mmc_test_card *test) | |
559 | { | |
560 | int ret; | |
561 | unsigned int size; | |
6b174931 | 562 | struct scatterlist sg; |
88ae600d PO |
563 | |
564 | if (test->card->host->max_blk_count == 1) | |
565 | return RESULT_UNSUP_HOST; | |
566 | ||
567 | size = PAGE_SIZE * 2; | |
568 | size = min(size, test->card->host->max_req_size); | |
569 | size = min(size, test->card->host->max_seg_size); | |
570 | size = min(size, test->card->host->max_blk_count * 512); | |
571 | ||
572 | if (size < 1024) | |
573 | return RESULT_UNSUP_HOST; | |
574 | ||
6b174931 PO |
575 | sg_init_one(&sg, test->buffer, size); |
576 | ||
577 | ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0); | |
88ae600d PO |
578 | if (ret) |
579 | return ret; | |
580 | ||
581 | return 0; | |
582 | } | |
583 | ||
584 | static int mmc_test_pow2_write(struct mmc_test_card *test) | |
585 | { | |
586 | int ret, i; | |
6b174931 | 587 | struct scatterlist sg; |
88ae600d PO |
588 | |
589 | if (!test->card->csd.write_partial) | |
590 | return RESULT_UNSUP_CARD; | |
591 | ||
592 | for (i = 1; i < 512;i <<= 1) { | |
6b174931 PO |
593 | sg_init_one(&sg, test->buffer, i); |
594 | ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 1); | |
88ae600d PO |
595 | if (ret) |
596 | return ret; | |
597 | } | |
598 | ||
599 | return 0; | |
600 | } | |
601 | ||
602 | static int mmc_test_pow2_read(struct mmc_test_card *test) | |
603 | { | |
604 | int ret, i; | |
6b174931 | 605 | struct scatterlist sg; |
88ae600d PO |
606 | |
607 | if (!test->card->csd.read_partial) | |
608 | return RESULT_UNSUP_CARD; | |
609 | ||
610 | for (i = 1; i < 512;i <<= 1) { | |
6b174931 PO |
611 | sg_init_one(&sg, test->buffer, i); |
612 | ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 0); | |
88ae600d PO |
613 | if (ret) |
614 | return ret; | |
615 | } | |
616 | ||
617 | return 0; | |
618 | } | |
619 | ||
620 | static int mmc_test_weird_write(struct mmc_test_card *test) | |
621 | { | |
622 | int ret, i; | |
6b174931 | 623 | struct scatterlist sg; |
88ae600d PO |
624 | |
625 | if (!test->card->csd.write_partial) | |
626 | return RESULT_UNSUP_CARD; | |
627 | ||
628 | for (i = 3; i < 512;i += 7) { | |
6b174931 PO |
629 | sg_init_one(&sg, test->buffer, i); |
630 | ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 1); | |
88ae600d PO |
631 | if (ret) |
632 | return ret; | |
633 | } | |
634 | ||
635 | return 0; | |
636 | } | |
637 | ||
638 | static int mmc_test_weird_read(struct mmc_test_card *test) | |
639 | { | |
640 | int ret, i; | |
6b174931 | 641 | struct scatterlist sg; |
88ae600d PO |
642 | |
643 | if (!test->card->csd.read_partial) | |
644 | return RESULT_UNSUP_CARD; | |
645 | ||
646 | for (i = 3; i < 512;i += 7) { | |
6b174931 PO |
647 | sg_init_one(&sg, test->buffer, i); |
648 | ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 0); | |
88ae600d PO |
649 | if (ret) |
650 | return ret; | |
651 | } | |
652 | ||
653 | return 0; | |
654 | } | |
655 | ||
656 | static int mmc_test_align_write(struct mmc_test_card *test) | |
657 | { | |
658 | int ret, i; | |
6b174931 | 659 | struct scatterlist sg; |
88ae600d PO |
660 | |
661 | for (i = 1;i < 4;i++) { | |
6b174931 PO |
662 | sg_init_one(&sg, test->buffer + i, 512); |
663 | ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1); | |
88ae600d PO |
664 | if (ret) |
665 | return ret; | |
666 | } | |
667 | ||
668 | return 0; | |
669 | } | |
670 | ||
671 | static int mmc_test_align_read(struct mmc_test_card *test) | |
672 | { | |
673 | int ret, i; | |
6b174931 | 674 | struct scatterlist sg; |
88ae600d PO |
675 | |
676 | for (i = 1;i < 4;i++) { | |
6b174931 PO |
677 | sg_init_one(&sg, test->buffer + i, 512); |
678 | ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0); | |
88ae600d PO |
679 | if (ret) |
680 | return ret; | |
681 | } | |
682 | ||
683 | return 0; | |
684 | } | |
685 | ||
686 | static int mmc_test_align_multi_write(struct mmc_test_card *test) | |
687 | { | |
688 | int ret, i; | |
689 | unsigned int size; | |
6b174931 | 690 | struct scatterlist sg; |
88ae600d PO |
691 | |
692 | if (test->card->host->max_blk_count == 1) | |
693 | return RESULT_UNSUP_HOST; | |
694 | ||
695 | size = PAGE_SIZE * 2; | |
696 | size = min(size, test->card->host->max_req_size); | |
697 | size = min(size, test->card->host->max_seg_size); | |
698 | size = min(size, test->card->host->max_blk_count * 512); | |
699 | ||
700 | if (size < 1024) | |
701 | return RESULT_UNSUP_HOST; | |
702 | ||
703 | for (i = 1;i < 4;i++) { | |
6b174931 PO |
704 | sg_init_one(&sg, test->buffer + i, size); |
705 | ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1); | |
88ae600d PO |
706 | if (ret) |
707 | return ret; | |
708 | } | |
709 | ||
710 | return 0; | |
711 | } | |
712 | ||
713 | static int mmc_test_align_multi_read(struct mmc_test_card *test) | |
714 | { | |
715 | int ret, i; | |
716 | unsigned int size; | |
6b174931 | 717 | struct scatterlist sg; |
88ae600d PO |
718 | |
719 | if (test->card->host->max_blk_count == 1) | |
720 | return RESULT_UNSUP_HOST; | |
721 | ||
722 | size = PAGE_SIZE * 2; | |
723 | size = min(size, test->card->host->max_req_size); | |
724 | size = min(size, test->card->host->max_seg_size); | |
725 | size = min(size, test->card->host->max_blk_count * 512); | |
726 | ||
727 | if (size < 1024) | |
728 | return RESULT_UNSUP_HOST; | |
729 | ||
730 | for (i = 1;i < 4;i++) { | |
6b174931 PO |
731 | sg_init_one(&sg, test->buffer + i, size); |
732 | ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0); | |
88ae600d PO |
733 | if (ret) |
734 | return ret; | |
735 | } | |
736 | ||
737 | return 0; | |
738 | } | |
739 | ||
740 | static int mmc_test_xfersize_write(struct mmc_test_card *test) | |
741 | { | |
742 | int ret; | |
743 | ||
744 | ret = mmc_test_set_blksize(test, 512); | |
745 | if (ret) | |
746 | return ret; | |
747 | ||
6b174931 | 748 | ret = mmc_test_broken_transfer(test, 1, 512, 1); |
88ae600d PO |
749 | if (ret) |
750 | return ret; | |
751 | ||
752 | return 0; | |
753 | } | |
754 | ||
755 | static int mmc_test_xfersize_read(struct mmc_test_card *test) | |
756 | { | |
757 | int ret; | |
758 | ||
759 | ret = mmc_test_set_blksize(test, 512); | |
760 | if (ret) | |
761 | return ret; | |
762 | ||
6b174931 | 763 | ret = mmc_test_broken_transfer(test, 1, 512, 0); |
88ae600d PO |
764 | if (ret) |
765 | return ret; | |
766 | ||
767 | return 0; | |
768 | } | |
769 | ||
770 | static int mmc_test_multi_xfersize_write(struct mmc_test_card *test) | |
771 | { | |
772 | int ret; | |
773 | ||
774 | if (test->card->host->max_blk_count == 1) | |
775 | return RESULT_UNSUP_HOST; | |
776 | ||
777 | ret = mmc_test_set_blksize(test, 512); | |
778 | if (ret) | |
779 | return ret; | |
780 | ||
6b174931 | 781 | ret = mmc_test_broken_transfer(test, 2, 512, 1); |
88ae600d PO |
782 | if (ret) |
783 | return ret; | |
784 | ||
785 | return 0; | |
786 | } | |
787 | ||
788 | static int mmc_test_multi_xfersize_read(struct mmc_test_card *test) | |
789 | { | |
790 | int ret; | |
791 | ||
792 | if (test->card->host->max_blk_count == 1) | |
793 | return RESULT_UNSUP_HOST; | |
794 | ||
795 | ret = mmc_test_set_blksize(test, 512); | |
796 | if (ret) | |
797 | return ret; | |
798 | ||
6b174931 | 799 | ret = mmc_test_broken_transfer(test, 2, 512, 0); |
88ae600d PO |
800 | if (ret) |
801 | return ret; | |
802 | ||
803 | return 0; | |
804 | } | |
805 | ||
2661081f PO |
806 | #ifdef CONFIG_HIGHMEM |
807 | ||
808 | static int mmc_test_write_high(struct mmc_test_card *test) | |
809 | { | |
810 | int ret; | |
811 | struct scatterlist sg; | |
812 | ||
813 | sg_init_table(&sg, 1); | |
814 | sg_set_page(&sg, test->highmem, 512, 0); | |
815 | ||
816 | ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1); | |
817 | if (ret) | |
818 | return ret; | |
819 | ||
820 | return 0; | |
821 | } | |
822 | ||
823 | static int mmc_test_read_high(struct mmc_test_card *test) | |
824 | { | |
825 | int ret; | |
826 | struct scatterlist sg; | |
827 | ||
828 | sg_init_table(&sg, 1); | |
829 | sg_set_page(&sg, test->highmem, 512, 0); | |
830 | ||
831 | ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0); | |
832 | if (ret) | |
833 | return ret; | |
834 | ||
835 | return 0; | |
836 | } | |
837 | ||
838 | static int mmc_test_multi_write_high(struct mmc_test_card *test) | |
839 | { | |
840 | int ret; | |
841 | unsigned int size; | |
842 | struct scatterlist sg; | |
843 | ||
844 | if (test->card->host->max_blk_count == 1) | |
845 | return RESULT_UNSUP_HOST; | |
846 | ||
847 | size = PAGE_SIZE * 2; | |
848 | size = min(size, test->card->host->max_req_size); | |
849 | size = min(size, test->card->host->max_seg_size); | |
850 | size = min(size, test->card->host->max_blk_count * 512); | |
851 | ||
852 | if (size < 1024) | |
853 | return RESULT_UNSUP_HOST; | |
854 | ||
855 | sg_init_table(&sg, 1); | |
856 | sg_set_page(&sg, test->highmem, size, 0); | |
857 | ||
858 | ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1); | |
859 | if (ret) | |
860 | return ret; | |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
865 | static int mmc_test_multi_read_high(struct mmc_test_card *test) | |
866 | { | |
867 | int ret; | |
868 | unsigned int size; | |
869 | struct scatterlist sg; | |
870 | ||
871 | if (test->card->host->max_blk_count == 1) | |
872 | return RESULT_UNSUP_HOST; | |
873 | ||
874 | size = PAGE_SIZE * 2; | |
875 | size = min(size, test->card->host->max_req_size); | |
876 | size = min(size, test->card->host->max_seg_size); | |
877 | size = min(size, test->card->host->max_blk_count * 512); | |
878 | ||
879 | if (size < 1024) | |
880 | return RESULT_UNSUP_HOST; | |
881 | ||
882 | sg_init_table(&sg, 1); | |
883 | sg_set_page(&sg, test->highmem, size, 0); | |
884 | ||
885 | ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0); | |
886 | if (ret) | |
887 | return ret; | |
888 | ||
889 | return 0; | |
890 | } | |
891 | ||
892 | #endif /* CONFIG_HIGHMEM */ | |
893 | ||
88ae600d PO |
894 | static const struct mmc_test_case mmc_test_cases[] = { |
895 | { | |
896 | .name = "Basic write (no data verification)", | |
897 | .run = mmc_test_basic_write, | |
898 | }, | |
899 | ||
900 | { | |
901 | .name = "Basic read (no data verification)", | |
902 | .run = mmc_test_basic_read, | |
903 | }, | |
904 | ||
905 | { | |
906 | .name = "Basic write (with data verification)", | |
6b174931 | 907 | .prepare = mmc_test_prepare_write, |
88ae600d | 908 | .run = mmc_test_verify_write, |
6b174931 | 909 | .cleanup = mmc_test_cleanup, |
88ae600d PO |
910 | }, |
911 | ||
912 | { | |
913 | .name = "Basic read (with data verification)", | |
6b174931 | 914 | .prepare = mmc_test_prepare_read, |
88ae600d | 915 | .run = mmc_test_verify_read, |
6b174931 | 916 | .cleanup = mmc_test_cleanup, |
88ae600d PO |
917 | }, |
918 | ||
919 | { | |
920 | .name = "Multi-block write", | |
6b174931 | 921 | .prepare = mmc_test_prepare_write, |
88ae600d | 922 | .run = mmc_test_multi_write, |
6b174931 | 923 | .cleanup = mmc_test_cleanup, |
88ae600d PO |
924 | }, |
925 | ||
926 | { | |
927 | .name = "Multi-block read", | |
6b174931 | 928 | .prepare = mmc_test_prepare_read, |
88ae600d | 929 | .run = mmc_test_multi_read, |
6b174931 | 930 | .cleanup = mmc_test_cleanup, |
88ae600d PO |
931 | }, |
932 | ||
933 | { | |
934 | .name = "Power of two block writes", | |
6b174931 | 935 | .prepare = mmc_test_prepare_write, |
88ae600d | 936 | .run = mmc_test_pow2_write, |
6b174931 | 937 | .cleanup = mmc_test_cleanup, |
88ae600d PO |
938 | }, |
939 | ||
940 | { | |
941 | .name = "Power of two block reads", | |
6b174931 | 942 | .prepare = mmc_test_prepare_read, |
88ae600d | 943 | .run = mmc_test_pow2_read, |
6b174931 | 944 | .cleanup = mmc_test_cleanup, |
88ae600d PO |
945 | }, |
946 | ||
947 | { | |
948 | .name = "Weird sized block writes", | |
6b174931 | 949 | .prepare = mmc_test_prepare_write, |
88ae600d | 950 | .run = mmc_test_weird_write, |
6b174931 | 951 | .cleanup = mmc_test_cleanup, |
88ae600d PO |
952 | }, |
953 | ||
954 | { | |
955 | .name = "Weird sized block reads", | |
6b174931 | 956 | .prepare = mmc_test_prepare_read, |
88ae600d | 957 | .run = mmc_test_weird_read, |
6b174931 | 958 | .cleanup = mmc_test_cleanup, |
88ae600d PO |
959 | }, |
960 | ||
961 | { | |
962 | .name = "Badly aligned write", | |
6b174931 | 963 | .prepare = mmc_test_prepare_write, |
88ae600d | 964 | .run = mmc_test_align_write, |
6b174931 | 965 | .cleanup = mmc_test_cleanup, |
88ae600d PO |
966 | }, |
967 | ||
968 | { | |
969 | .name = "Badly aligned read", | |
6b174931 | 970 | .prepare = mmc_test_prepare_read, |
88ae600d | 971 | .run = mmc_test_align_read, |
6b174931 | 972 | .cleanup = mmc_test_cleanup, |
88ae600d PO |
973 | }, |
974 | ||
975 | { | |
976 | .name = "Badly aligned multi-block write", | |
6b174931 | 977 | .prepare = mmc_test_prepare_write, |
88ae600d | 978 | .run = mmc_test_align_multi_write, |
6b174931 | 979 | .cleanup = mmc_test_cleanup, |
88ae600d PO |
980 | }, |
981 | ||
982 | { | |
983 | .name = "Badly aligned multi-block read", | |
6b174931 | 984 | .prepare = mmc_test_prepare_read, |
88ae600d | 985 | .run = mmc_test_align_multi_read, |
6b174931 | 986 | .cleanup = mmc_test_cleanup, |
88ae600d PO |
987 | }, |
988 | ||
989 | { | |
990 | .name = "Correct xfer_size at write (start failure)", | |
991 | .run = mmc_test_xfersize_write, | |
992 | }, | |
993 | ||
994 | { | |
995 | .name = "Correct xfer_size at read (start failure)", | |
996 | .run = mmc_test_xfersize_read, | |
997 | }, | |
998 | ||
999 | { | |
1000 | .name = "Correct xfer_size at write (midway failure)", | |
1001 | .run = mmc_test_multi_xfersize_write, | |
1002 | }, | |
1003 | ||
1004 | { | |
1005 | .name = "Correct xfer_size at read (midway failure)", | |
1006 | .run = mmc_test_multi_xfersize_read, | |
1007 | }, | |
2661081f PO |
1008 | |
1009 | #ifdef CONFIG_HIGHMEM | |
1010 | ||
1011 | { | |
1012 | .name = "Highmem write", | |
1013 | .prepare = mmc_test_prepare_write, | |
1014 | .run = mmc_test_write_high, | |
1015 | .cleanup = mmc_test_cleanup, | |
1016 | }, | |
1017 | ||
1018 | { | |
1019 | .name = "Highmem read", | |
1020 | .prepare = mmc_test_prepare_read, | |
1021 | .run = mmc_test_read_high, | |
1022 | .cleanup = mmc_test_cleanup, | |
1023 | }, | |
1024 | ||
1025 | { | |
1026 | .name = "Multi-block highmem write", | |
1027 | .prepare = mmc_test_prepare_write, | |
1028 | .run = mmc_test_multi_write_high, | |
1029 | .cleanup = mmc_test_cleanup, | |
1030 | }, | |
1031 | ||
1032 | { | |
1033 | .name = "Multi-block highmem read", | |
1034 | .prepare = mmc_test_prepare_read, | |
1035 | .run = mmc_test_multi_read_high, | |
1036 | .cleanup = mmc_test_cleanup, | |
1037 | }, | |
1038 | ||
1039 | #endif /* CONFIG_HIGHMEM */ | |
1040 | ||
88ae600d PO |
1041 | }; |
1042 | ||
a650031a | 1043 | static DEFINE_MUTEX(mmc_test_lock); |
88ae600d | 1044 | |
fd8c326c | 1045 | static void mmc_test_run(struct mmc_test_card *test, int testcase) |
88ae600d PO |
1046 | { |
1047 | int i, ret; | |
1048 | ||
1049 | printk(KERN_INFO "%s: Starting tests of card %s...\n", | |
1050 | mmc_hostname(test->card->host), mmc_card_id(test->card)); | |
1051 | ||
1052 | mmc_claim_host(test->card->host); | |
1053 | ||
1054 | for (i = 0;i < ARRAY_SIZE(mmc_test_cases);i++) { | |
fd8c326c PO |
1055 | if (testcase && ((i + 1) != testcase)) |
1056 | continue; | |
1057 | ||
88ae600d PO |
1058 | printk(KERN_INFO "%s: Test case %d. %s...\n", |
1059 | mmc_hostname(test->card->host), i + 1, | |
1060 | mmc_test_cases[i].name); | |
1061 | ||
1062 | if (mmc_test_cases[i].prepare) { | |
1063 | ret = mmc_test_cases[i].prepare(test); | |
1064 | if (ret) { | |
1065 | printk(KERN_INFO "%s: Result: Prepare " | |
1066 | "stage failed! (%d)\n", | |
1067 | mmc_hostname(test->card->host), | |
1068 | ret); | |
1069 | continue; | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | ret = mmc_test_cases[i].run(test); | |
1074 | switch (ret) { | |
1075 | case RESULT_OK: | |
1076 | printk(KERN_INFO "%s: Result: OK\n", | |
1077 | mmc_hostname(test->card->host)); | |
1078 | break; | |
1079 | case RESULT_FAIL: | |
1080 | printk(KERN_INFO "%s: Result: FAILED\n", | |
1081 | mmc_hostname(test->card->host)); | |
1082 | break; | |
1083 | case RESULT_UNSUP_HOST: | |
1084 | printk(KERN_INFO "%s: Result: UNSUPPORTED " | |
1085 | "(by host)\n", | |
1086 | mmc_hostname(test->card->host)); | |
1087 | break; | |
1088 | case RESULT_UNSUP_CARD: | |
1089 | printk(KERN_INFO "%s: Result: UNSUPPORTED " | |
1090 | "(by card)\n", | |
1091 | mmc_hostname(test->card->host)); | |
1092 | break; | |
1093 | default: | |
1094 | printk(KERN_INFO "%s: Result: ERROR (%d)\n", | |
1095 | mmc_hostname(test->card->host), ret); | |
1096 | } | |
1097 | ||
1098 | if (mmc_test_cases[i].cleanup) { | |
1099 | ret = mmc_test_cases[i].cleanup(test); | |
1100 | if (ret) { | |
1101 | printk(KERN_INFO "%s: Warning: Cleanup " | |
1102 | "stage failed! (%d)\n", | |
1103 | mmc_hostname(test->card->host), | |
1104 | ret); | |
1105 | } | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | mmc_release_host(test->card->host); | |
1110 | ||
1111 | printk(KERN_INFO "%s: Tests completed.\n", | |
1112 | mmc_hostname(test->card->host)); | |
1113 | } | |
1114 | ||
1115 | static ssize_t mmc_test_show(struct device *dev, | |
1116 | struct device_attribute *attr, char *buf) | |
1117 | { | |
1118 | mutex_lock(&mmc_test_lock); | |
1119 | mutex_unlock(&mmc_test_lock); | |
1120 | ||
1121 | return 0; | |
1122 | } | |
1123 | ||
1124 | static ssize_t mmc_test_store(struct device *dev, | |
1125 | struct device_attribute *attr, const char *buf, size_t count) | |
1126 | { | |
1127 | struct mmc_card *card; | |
1128 | struct mmc_test_card *test; | |
fd8c326c | 1129 | int testcase; |
88ae600d PO |
1130 | |
1131 | card = container_of(dev, struct mmc_card, dev); | |
1132 | ||
fd8c326c PO |
1133 | testcase = simple_strtol(buf, NULL, 10); |
1134 | ||
88ae600d PO |
1135 | test = kzalloc(sizeof(struct mmc_test_card), GFP_KERNEL); |
1136 | if (!test) | |
1137 | return -ENOMEM; | |
1138 | ||
1139 | test->card = card; | |
1140 | ||
1141 | test->buffer = kzalloc(BUFFER_SIZE, GFP_KERNEL); | |
2661081f PO |
1142 | #ifdef CONFIG_HIGHMEM |
1143 | test->highmem = alloc_pages(GFP_KERNEL | __GFP_HIGHMEM, BUFFER_ORDER); | |
1144 | #endif | |
1145 | ||
1146 | #ifdef CONFIG_HIGHMEM | |
1147 | if (test->buffer && test->highmem) { | |
1148 | #else | |
88ae600d | 1149 | if (test->buffer) { |
2661081f | 1150 | #endif |
88ae600d | 1151 | mutex_lock(&mmc_test_lock); |
fd8c326c | 1152 | mmc_test_run(test, testcase); |
88ae600d PO |
1153 | mutex_unlock(&mmc_test_lock); |
1154 | } | |
1155 | ||
2661081f PO |
1156 | #ifdef CONFIG_HIGHMEM |
1157 | __free_pages(test->highmem, BUFFER_ORDER); | |
1158 | #endif | |
88ae600d PO |
1159 | kfree(test->buffer); |
1160 | kfree(test); | |
1161 | ||
1162 | return count; | |
1163 | } | |
1164 | ||
1165 | static DEVICE_ATTR(test, S_IWUSR | S_IRUGO, mmc_test_show, mmc_test_store); | |
1166 | ||
1167 | static int mmc_test_probe(struct mmc_card *card) | |
1168 | { | |
1169 | int ret; | |
1170 | ||
0121a982 PO |
1171 | if ((card->type != MMC_TYPE_MMC) && (card->type != MMC_TYPE_SD)) |
1172 | return -ENODEV; | |
1173 | ||
88ae600d PO |
1174 | ret = device_create_file(&card->dev, &dev_attr_test); |
1175 | if (ret) | |
1176 | return ret; | |
1177 | ||
60c9c7b1 PO |
1178 | dev_info(&card->dev, "Card claimed for testing.\n"); |
1179 | ||
88ae600d PO |
1180 | return 0; |
1181 | } | |
1182 | ||
1183 | static void mmc_test_remove(struct mmc_card *card) | |
1184 | { | |
1185 | device_remove_file(&card->dev, &dev_attr_test); | |
1186 | } | |
1187 | ||
1188 | static struct mmc_driver mmc_driver = { | |
1189 | .drv = { | |
1190 | .name = "mmc_test", | |
1191 | }, | |
1192 | .probe = mmc_test_probe, | |
1193 | .remove = mmc_test_remove, | |
1194 | }; | |
1195 | ||
1196 | static int __init mmc_test_init(void) | |
1197 | { | |
1198 | return mmc_register_driver(&mmc_driver); | |
1199 | } | |
1200 | ||
1201 | static void __exit mmc_test_exit(void) | |
1202 | { | |
1203 | mmc_unregister_driver(&mmc_driver); | |
1204 | } | |
1205 | ||
1206 | module_init(mmc_test_init); | |
1207 | module_exit(mmc_test_exit); | |
1208 | ||
1209 | MODULE_LICENSE("GPL"); | |
1210 | MODULE_DESCRIPTION("Multimedia Card (MMC) host test driver"); | |
1211 | MODULE_AUTHOR("Pierre Ossman"); |