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Merge branch 'mini2440-dev-unlikely' into mini2440-dev
[linux-2.6/mini2440.git] / drivers / memstick / core / mspro_block.c
blobbd83fa0a4970fb13a5ddef788d1c68a5a7b21300
1 /*
2 * Sony MemoryStick Pro storage support
3 *
4 * Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
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 version 2 as
8 * published by the Free Software Foundation.
9 *
10 * Special thanks to Carlos Corbacho for providing various MemoryStick cards
11 * that made this driver possible.
12 *
13 */
14
15 #include <linux/blkdev.h>
16 #include <linux/idr.h>
17 #include <linux/hdreg.h>
18 #include <linux/kthread.h>
19 #include <linux/delay.h>
20 #include <linux/memstick.h>
21
22 #define DRIVER_NAME "mspro_block"
23
24 static int major;
25 module_param(major, int, 0644);
26
27 #define MSPRO_BLOCK_MAX_SEGS 32
28 #define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
29
30 #define MSPRO_BLOCK_SIGNATURE 0xa5c3
31 #define MSPRO_BLOCK_MAX_ATTRIBUTES 41
32
33 #define MSPRO_BLOCK_PART_SHIFT 3
34
35 enum {
36 MSPRO_BLOCK_ID_SYSINFO = 0x10,
37 MSPRO_BLOCK_ID_MODELNAME = 0x15,
38 MSPRO_BLOCK_ID_MBR = 0x20,
39 MSPRO_BLOCK_ID_PBR16 = 0x21,
40 MSPRO_BLOCK_ID_PBR32 = 0x22,
41 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
42 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
43 MSPRO_BLOCK_ID_DEVINFO = 0x30
44 };
45
46 struct mspro_sys_attr {
47 size_t size;
48 void *data;
49 unsigned char id;
50 char name[32];
51 struct device_attribute dev_attr;
52 };
53
54 struct mspro_attr_entry {
55 __be32 address;
56 __be32 size;
57 unsigned char id;
58 unsigned char reserved[3];
59 } __attribute__((packed));
60
61 struct mspro_attribute {
62 __be16 signature;
63 unsigned short version;
64 unsigned char count;
65 unsigned char reserved[11];
66 struct mspro_attr_entry entries[];
67 } __attribute__((packed));
68
69 struct mspro_sys_info {
70 unsigned char class;
71 unsigned char reserved0;
72 __be16 block_size;
73 __be16 block_count;
74 __be16 user_block_count;
75 __be16 page_size;
76 unsigned char reserved1[2];
77 unsigned char assembly_date[8];
78 __be32 serial_number;
79 unsigned char assembly_maker_code;
80 unsigned char assembly_model_code[3];
81 __be16 memory_maker_code;
82 __be16 memory_model_code;
83 unsigned char reserved2[4];
84 unsigned char vcc;
85 unsigned char vpp;
86 __be16 controller_number;
87 __be16 controller_function;
88 __be16 start_sector;
89 __be16 unit_size;
90 unsigned char ms_sub_class;
91 unsigned char reserved3[4];
92 unsigned char interface_type;
93 __be16 controller_code;
94 unsigned char format_type;
95 unsigned char reserved4;
96 unsigned char device_type;
97 unsigned char reserved5[7];
98 unsigned char mspro_id[16];
99 unsigned char reserved6[16];
100 } __attribute__((packed));
101
102 struct mspro_mbr {
103 unsigned char boot_partition;
104 unsigned char start_head;
105 unsigned char start_sector;
106 unsigned char start_cylinder;
107 unsigned char partition_type;
108 unsigned char end_head;
109 unsigned char end_sector;
110 unsigned char end_cylinder;
111 unsigned int start_sectors;
112 unsigned int sectors_per_partition;
113 } __attribute__((packed));
114
115 struct mspro_specfile {
116 char name[8];
117 char ext[3];
118 unsigned char attr;
119 unsigned char reserved[10];
120 unsigned short time;
121 unsigned short date;
122 unsigned short cluster;
123 unsigned int size;
124 } __attribute__((packed));
125
126 struct mspro_devinfo {
127 __be16 cylinders;
128 __be16 heads;
129 __be16 bytes_per_track;
130 __be16 bytes_per_sector;
131 __be16 sectors_per_track;
132 unsigned char reserved[6];
133 } __attribute__((packed));
134
135 struct mspro_block_data {
136 struct memstick_dev *card;
137 unsigned int usage_count;
138 unsigned int caps;
139 struct gendisk *disk;
140 struct request_queue *queue;
141 struct request *block_req;
142 spinlock_t q_lock;
143
144 unsigned short page_size;
145 unsigned short cylinders;
146 unsigned short heads;
147 unsigned short sectors_per_track;
148
149 unsigned char system;
150 unsigned char read_only:1,
151 eject:1,
152 has_request:1,
153 data_dir:1,
154 active:1;
155 unsigned char transfer_cmd;
156
157 int (*mrq_handler)(struct memstick_dev *card,
158 struct memstick_request **mrq);
159
160 struct attribute_group attr_group;
161
162 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
163 unsigned int seg_count;
164 unsigned int current_seg;
165 unsigned int current_page;
166 };
167
168 static DEFINE_IDR(mspro_block_disk_idr);
169 static DEFINE_MUTEX(mspro_block_disk_lock);
170
171 static int mspro_block_complete_req(struct memstick_dev *card, int error);
172
173 /*** Block device ***/
174
175 static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
176 {
177 struct gendisk *disk = bdev->bd_disk;
178 struct mspro_block_data *msb = disk->private_data;
179 int rc = -ENXIO;
180
181 mutex_lock(&mspro_block_disk_lock);
182
183 if (msb && msb->card) {
184 msb->usage_count++;
185 if ((mode & FMODE_WRITE) && msb->read_only)
186 rc = -EROFS;
187 else
188 rc = 0;
189 }
190
191 mutex_unlock(&mspro_block_disk_lock);
192
193 return rc;
194 }
195
196
197 static int mspro_block_disk_release(struct gendisk *disk)
198 {
199 struct mspro_block_data *msb = disk->private_data;
200 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
201
202 mutex_lock(&mspro_block_disk_lock);
203
204 if (msb) {
205 if (msb->usage_count)
206 msb->usage_count--;
207
208 if (!msb->usage_count) {
209 kfree(msb);
210 disk->private_data = NULL;
211 idr_remove(&mspro_block_disk_idr, disk_id);
212 put_disk(disk);
213 }
214 }
215
216 mutex_unlock(&mspro_block_disk_lock);
217
218 return 0;
219 }
220
221 static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
222 {
223 return mspro_block_disk_release(disk);
224 }
225
226 static int mspro_block_bd_getgeo(struct block_device *bdev,
227 struct hd_geometry *geo)
228 {
229 struct mspro_block_data *msb = bdev->bd_disk->private_data;
230
231 geo->heads = msb->heads;
232 geo->sectors = msb->sectors_per_track;
233 geo->cylinders = msb->cylinders;
234
235 return 0;
236 }
237
238 static const struct block_device_operations ms_block_bdops = {
239 .open = mspro_block_bd_open,
240 .release = mspro_block_bd_release,
241 .getgeo = mspro_block_bd_getgeo,
242 .owner = THIS_MODULE
243 };
244
245 /*** Information ***/
246
247 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
248 {
249 struct device_attribute *dev_attr
250 = container_of(attr, struct device_attribute, attr);
251 return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
252 }
253
254 static const char *mspro_block_attr_name(unsigned char tag)
255 {
256 switch (tag) {
257 case MSPRO_BLOCK_ID_SYSINFO:
258 return "attr_sysinfo";
259 case MSPRO_BLOCK_ID_MODELNAME:
260 return "attr_modelname";
261 case MSPRO_BLOCK_ID_MBR:
262 return "attr_mbr";
263 case MSPRO_BLOCK_ID_PBR16:
264 return "attr_pbr16";
265 case MSPRO_BLOCK_ID_PBR32:
266 return "attr_pbr32";
267 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
268 return "attr_specfilevalues1";
269 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
270 return "attr_specfilevalues2";
271 case MSPRO_BLOCK_ID_DEVINFO:
272 return "attr_devinfo";
273 default:
274 return NULL;
275 };
276 }
277
278 typedef ssize_t (*sysfs_show_t)(struct device *dev,
279 struct device_attribute *attr,
280 char *buffer);
281
282 static ssize_t mspro_block_attr_show_default(struct device *dev,
283 struct device_attribute *attr,
284 char *buffer)
285 {
286 struct mspro_sys_attr *s_attr = container_of(attr,
287 struct mspro_sys_attr,
288 dev_attr);
289
290 ssize_t cnt, rc = 0;
291
292 for (cnt = 0; cnt < s_attr->size; cnt++) {
293 if (cnt && !(cnt % 16)) {
294 if (PAGE_SIZE - rc)
295 buffer[rc++] = '\n';
296 }
297
298 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
299 ((unsigned char *)s_attr->data)[cnt]);
300 }
301 return rc;
302 }
303
304 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
305 struct device_attribute *attr,
306 char *buffer)
307 {
308 struct mspro_sys_attr *x_attr = container_of(attr,
309 struct mspro_sys_attr,
310 dev_attr);
311 struct mspro_sys_info *x_sys = x_attr->data;
312 ssize_t rc = 0;
313 int date_tz = 0, date_tz_f = 0;
314
315 if (x_sys->assembly_date[0] > 0x80U) {
316 date_tz = (~x_sys->assembly_date[0]) + 1;
317 date_tz_f = date_tz & 3;
318 date_tz >>= 2;
319 date_tz = -date_tz;
320 date_tz_f *= 15;
321 } else if (x_sys->assembly_date[0] < 0x80U) {
322 date_tz = x_sys->assembly_date[0];
323 date_tz_f = date_tz & 3;
324 date_tz >>= 2;
325 date_tz_f *= 15;
326 }
327
328 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
329 x_sys->class);
330 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
331 be16_to_cpu(x_sys->block_size));
332 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
333 be16_to_cpu(x_sys->block_count));
334 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
335 be16_to_cpu(x_sys->user_block_count));
336 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
337 be16_to_cpu(x_sys->page_size));
338 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
339 "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
340 date_tz, date_tz_f,
341 be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
342 x_sys->assembly_date[3], x_sys->assembly_date[4],
343 x_sys->assembly_date[5], x_sys->assembly_date[6],
344 x_sys->assembly_date[7]);
345 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
346 be32_to_cpu(x_sys->serial_number));
347 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
348 "assembly maker code: %x\n",
349 x_sys->assembly_maker_code);
350 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
351 "%02x%02x%02x\n", x_sys->assembly_model_code[0],
352 x_sys->assembly_model_code[1],
353 x_sys->assembly_model_code[2]);
354 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
355 be16_to_cpu(x_sys->memory_maker_code));
356 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
357 be16_to_cpu(x_sys->memory_model_code));
358 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
359 x_sys->vcc);
360 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
361 x_sys->vpp);
362 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
363 be16_to_cpu(x_sys->controller_number));
364 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
365 "controller function: %x\n",
366 be16_to_cpu(x_sys->controller_function));
367 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
368 be16_to_cpu(x_sys->start_sector));
369 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
370 be16_to_cpu(x_sys->unit_size));
371 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
372 x_sys->ms_sub_class);
373 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
374 x_sys->interface_type);
375 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
376 be16_to_cpu(x_sys->controller_code));
377 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
378 x_sys->format_type);
379 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
380 x_sys->device_type);
381 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
382 x_sys->mspro_id);
383 return rc;
384 }
385
386 static ssize_t mspro_block_attr_show_modelname(struct device *dev,
387 struct device_attribute *attr,
388 char *buffer)
389 {
390 struct mspro_sys_attr *s_attr = container_of(attr,
391 struct mspro_sys_attr,
392 dev_attr);
393
394 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
395 }
396
397 static ssize_t mspro_block_attr_show_mbr(struct device *dev,
398 struct device_attribute *attr,
399 char *buffer)
400 {
401 struct mspro_sys_attr *x_attr = container_of(attr,
402 struct mspro_sys_attr,
403 dev_attr);
404 struct mspro_mbr *x_mbr = x_attr->data;
405 ssize_t rc = 0;
406
407 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
408 x_mbr->boot_partition);
409 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
410 x_mbr->start_head);
411 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
412 x_mbr->start_sector);
413 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
414 x_mbr->start_cylinder);
415 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
416 x_mbr->partition_type);
417 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
418 x_mbr->end_head);
419 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
420 x_mbr->end_sector);
421 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
422 x_mbr->end_cylinder);
423 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
424 x_mbr->start_sectors);
425 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
426 "sectors per partition: %x\n",
427 x_mbr->sectors_per_partition);
428 return rc;
429 }
430
431 static ssize_t mspro_block_attr_show_specfile(struct device *dev,
432 struct device_attribute *attr,
433 char *buffer)
434 {
435 struct mspro_sys_attr *x_attr = container_of(attr,
436 struct mspro_sys_attr,
437 dev_attr);
438 struct mspro_specfile *x_spfile = x_attr->data;
439 char name[9], ext[4];
440 ssize_t rc = 0;
441
442 memcpy(name, x_spfile->name, 8);
443 name[8] = 0;
444 memcpy(ext, x_spfile->ext, 3);
445 ext[3] = 0;
446
447 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
448 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
449 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
450 x_spfile->attr);
451 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
452 x_spfile->time >> 11,
453 (x_spfile->time >> 5) & 0x3f,
454 (x_spfile->time & 0x1f) * 2);
455 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
456 (x_spfile->date >> 9) + 1980,
457 (x_spfile->date >> 5) & 0xf,
458 x_spfile->date & 0x1f);
459 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
460 x_spfile->cluster);
461 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
462 x_spfile->size);
463 return rc;
464 }
465
466 static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
467 struct device_attribute *attr,
468 char *buffer)
469 {
470 struct mspro_sys_attr *x_attr = container_of(attr,
471 struct mspro_sys_attr,
472 dev_attr);
473 struct mspro_devinfo *x_devinfo = x_attr->data;
474 ssize_t rc = 0;
475
476 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
477 be16_to_cpu(x_devinfo->cylinders));
478 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
479 be16_to_cpu(x_devinfo->heads));
480 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
481 be16_to_cpu(x_devinfo->bytes_per_track));
482 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
483 be16_to_cpu(x_devinfo->bytes_per_sector));
484 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
485 be16_to_cpu(x_devinfo->sectors_per_track));
486 return rc;
487 }
488
489 static sysfs_show_t mspro_block_attr_show(unsigned char tag)
490 {
491 switch (tag) {
492 case MSPRO_BLOCK_ID_SYSINFO:
493 return mspro_block_attr_show_sysinfo;
494 case MSPRO_BLOCK_ID_MODELNAME:
495 return mspro_block_attr_show_modelname;
496 case MSPRO_BLOCK_ID_MBR:
497 return mspro_block_attr_show_mbr;
498 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
499 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
500 return mspro_block_attr_show_specfile;
501 case MSPRO_BLOCK_ID_DEVINFO:
502 return mspro_block_attr_show_devinfo;
503 default:
504 return mspro_block_attr_show_default;
505 }
506 }
507
508 /*** Protocol handlers ***/
509
510 /*
511 * Functions prefixed with "h_" are protocol callbacks. They can be called from
512 * interrupt context. Return value of 0 means that request processing is still
513 * ongoing, while special error value of -EAGAIN means that current request is
514 * finished (and request processor should come back some time later).
515 */
516
517 static int h_mspro_block_req_init(struct memstick_dev *card,
518 struct memstick_request **mrq)
519 {
520 struct mspro_block_data *msb = memstick_get_drvdata(card);
521
522 *mrq = &card->current_mrq;
523 card->next_request = msb->mrq_handler;
524 return 0;
525 }
526
527 static int h_mspro_block_default(struct memstick_dev *card,
528 struct memstick_request **mrq)
529 {
530 return mspro_block_complete_req(card, (*mrq)->error);
531 }
532
533 static int h_mspro_block_default_bad(struct memstick_dev *card,
534 struct memstick_request **mrq)
535 {
536 return -ENXIO;
537 }
538
539 static int h_mspro_block_get_ro(struct memstick_dev *card,
540 struct memstick_request **mrq)
541 {
542 struct mspro_block_data *msb = memstick_get_drvdata(card);
543
544 if (!(*mrq)->error) {
545 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
546 & MEMSTICK_STATUS0_WP)
547 msb->read_only = 1;
548 else
549 msb->read_only = 0;
550 }
551
552 return mspro_block_complete_req(card, (*mrq)->error);
553 }
554
555 static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
556 struct memstick_request **mrq)
557 {
558 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
559
560 if (!(*mrq)->error) {
561 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
562 (*mrq)->error = -EFAULT;
563 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
564 return 0;
565 }
566
567 return mspro_block_complete_req(card, (*mrq)->error);
568 }
569
570 static int h_mspro_block_transfer_data(struct memstick_dev *card,
571 struct memstick_request **mrq)
572 {
573 struct mspro_block_data *msb = memstick_get_drvdata(card);
574 unsigned char t_val = 0;
575 struct scatterlist t_sg = { 0 };
576 size_t t_offset;
577
578 if ((*mrq)->error)
579 return mspro_block_complete_req(card, (*mrq)->error);
580
581 switch ((*mrq)->tpc) {
582 case MS_TPC_WRITE_REG:
583 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
584 (*mrq)->need_card_int = 1;
585 return 0;
586 case MS_TPC_SET_CMD:
587 t_val = (*mrq)->int_reg;
588 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
589 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
590 goto has_int_reg;
591 return 0;
592 case MS_TPC_GET_INT:
593 t_val = (*mrq)->data[0];
594 has_int_reg:
595 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
596 t_val = MSPRO_CMD_STOP;
597 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
598 card->next_request = h_mspro_block_default;
599 return 0;
600 }
601
602 if (msb->current_page
603 == (msb->req_sg[msb->current_seg].length
604 / msb->page_size)) {
605 msb->current_page = 0;
606 msb->current_seg++;
607
608 if (msb->current_seg == msb->seg_count) {
609 if (t_val & MEMSTICK_INT_CED) {
610 return mspro_block_complete_req(card,
611 0);
612 } else {
613 card->next_request
614 = h_mspro_block_wait_for_ced;
615 memstick_init_req(*mrq, MS_TPC_GET_INT,
616 NULL, 1);
617 return 0;
618 }
619 }
620 }
621
622 if (!(t_val & MEMSTICK_INT_BREQ)) {
623 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
624 return 0;
625 }
626
627 t_offset = msb->req_sg[msb->current_seg].offset;
628 t_offset += msb->current_page * msb->page_size;
629
630 sg_set_page(&t_sg,
631 nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
632 t_offset >> PAGE_SHIFT),
633 msb->page_size, offset_in_page(t_offset));
634
635 memstick_init_req_sg(*mrq, msb->data_dir == READ
636 ? MS_TPC_READ_LONG_DATA
637 : MS_TPC_WRITE_LONG_DATA,
638 &t_sg);
639 (*mrq)->need_card_int = 1;
640 return 0;
641 case MS_TPC_READ_LONG_DATA:
642 case MS_TPC_WRITE_LONG_DATA:
643 msb->current_page++;
644 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
645 t_val = (*mrq)->int_reg;
646 goto has_int_reg;
647 } else {
648 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
649 return 0;
650 }
651
652 default:
653 BUG();
654 }
655 }
656
657 /*** Data transfer ***/
658
659 static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
660 {
661 struct mspro_block_data *msb = memstick_get_drvdata(card);
662 sector_t t_sec;
663 unsigned int count;
664 struct mspro_param_register param;
665
666 try_again:
667 while (chunk) {
668 msb->current_page = 0;
669 msb->current_seg = 0;
670 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
671 msb->block_req,
672 msb->req_sg);
673
674 if (!msb->seg_count) {
675 chunk = __blk_end_request_cur(msb->block_req, -ENOMEM);
676 continue;
677 }
678
679 t_sec = blk_rq_pos(msb->block_req) << 9;
680 sector_div(t_sec, msb->page_size);
681
682 count = blk_rq_bytes(msb->block_req);
683 count /= msb->page_size;
684
685 param.system = msb->system;
686 param.data_count = cpu_to_be16(count);
687 param.data_address = cpu_to_be32((uint32_t)t_sec);
688 param.tpc_param = 0;
689
690 msb->data_dir = rq_data_dir(msb->block_req);
691 msb->transfer_cmd = msb->data_dir == READ
692 ? MSPRO_CMD_READ_DATA
693 : MSPRO_CMD_WRITE_DATA;
694
695 dev_dbg(&card->dev, "data transfer: cmd %x, "
696 "lba %x, count %x\n", msb->transfer_cmd,
697 be32_to_cpu(param.data_address), count);
698
699 card->next_request = h_mspro_block_req_init;
700 msb->mrq_handler = h_mspro_block_transfer_data;
701 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
702 &param, sizeof(param));
703 memstick_new_req(card->host);
704 return 0;
705 }
706
707 dev_dbg(&card->dev, "blk_fetch\n");
708 msb->block_req = blk_fetch_request(msb->queue);
709 if (!msb->block_req) {
710 dev_dbg(&card->dev, "issue end\n");
711 return -EAGAIN;
712 }
713
714 dev_dbg(&card->dev, "trying again\n");
715 chunk = 1;
716 goto try_again;
717 }
718
719 static int mspro_block_complete_req(struct memstick_dev *card, int error)
720 {
721 struct mspro_block_data *msb = memstick_get_drvdata(card);
722 int chunk, cnt;
723 unsigned int t_len = 0;
724 unsigned long flags;
725
726 spin_lock_irqsave(&msb->q_lock, flags);
727 dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
728 error);
729
730 if (msb->has_request) {
731 /* Nothing to do - not really an error */
732 if (error == -EAGAIN)
733 error = 0;
734
735 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
736 if (msb->data_dir == READ) {
737 for (cnt = 0; cnt < msb->current_seg; cnt++)
738 t_len += msb->req_sg[cnt].length
739 / msb->page_size;
740
741 if (msb->current_page)
742 t_len += msb->current_page - 1;
743
744 t_len *= msb->page_size;
745 }
746 } else
747 t_len = blk_rq_bytes(msb->block_req);
748
749 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
750
751 if (error && !t_len)
752 t_len = blk_rq_cur_bytes(msb->block_req);
753
754 chunk = __blk_end_request(msb->block_req, error, t_len);
755
756 error = mspro_block_issue_req(card, chunk);
757
758 if (!error)
759 goto out;
760 else
761 msb->has_request = 0;
762 } else {
763 if (!error)
764 error = -EAGAIN;
765 }
766
767 card->next_request = h_mspro_block_default_bad;
768 complete_all(&card->mrq_complete);
769 out:
770 spin_unlock_irqrestore(&msb->q_lock, flags);
771 return error;
772 }
773
774 static void mspro_block_stop(struct memstick_dev *card)
775 {
776 struct mspro_block_data *msb = memstick_get_drvdata(card);
777 int rc = 0;
778 unsigned long flags;
779
780 while (1) {
781 spin_lock_irqsave(&msb->q_lock, flags);
782 if (!msb->has_request) {
783 blk_stop_queue(msb->queue);
784 rc = 1;
785 }
786 spin_unlock_irqrestore(&msb->q_lock, flags);
787
788 if (rc)
789 break;
790
791 wait_for_completion(&card->mrq_complete);
792 }
793 }
794
795 static void mspro_block_start(struct memstick_dev *card)
796 {
797 struct mspro_block_data *msb = memstick_get_drvdata(card);
798 unsigned long flags;
799
800 spin_lock_irqsave(&msb->q_lock, flags);
801 blk_start_queue(msb->queue);
802 spin_unlock_irqrestore(&msb->q_lock, flags);
803 }
804
805 static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
806 {
807 if (!blk_fs_request(req) && !blk_pc_request(req)) {
808 blk_dump_rq_flags(req, "MSPro unsupported request");
809 return BLKPREP_KILL;
810 }
811
812 req->cmd_flags |= REQ_DONTPREP;
813
814 return BLKPREP_OK;
815 }
816
817 static void mspro_block_submit_req(struct request_queue *q)
818 {
819 struct memstick_dev *card = q->queuedata;
820 struct mspro_block_data *msb = memstick_get_drvdata(card);
821 struct request *req = NULL;
822
823 if (msb->has_request)
824 return;
825
826 if (msb->eject) {
827 while ((req = blk_fetch_request(q)) != NULL)
828 __blk_end_request_all(req, -ENODEV);
829
830 return;
831 }
832
833 msb->has_request = 1;
834 if (mspro_block_issue_req(card, 0))
835 msb->has_request = 0;
836 }
837
838 /*** Initialization ***/
839
840 static int mspro_block_wait_for_ced(struct memstick_dev *card)
841 {
842 struct mspro_block_data *msb = memstick_get_drvdata(card);
843
844 card->next_request = h_mspro_block_req_init;
845 msb->mrq_handler = h_mspro_block_wait_for_ced;
846 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
847 memstick_new_req(card->host);
848 wait_for_completion(&card->mrq_complete);
849 return card->current_mrq.error;
850 }
851
852 static int mspro_block_set_interface(struct memstick_dev *card,
853 unsigned char sys_reg)
854 {
855 struct memstick_host *host = card->host;
856 struct mspro_block_data *msb = memstick_get_drvdata(card);
857 struct mspro_param_register param = {
858 .system = sys_reg,
859 .data_count = 0,
860 .data_address = 0,
861 .tpc_param = 0
862 };
863
864 card->next_request = h_mspro_block_req_init;
865 msb->mrq_handler = h_mspro_block_default;
866 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
867 sizeof(param));
868 memstick_new_req(host);
869 wait_for_completion(&card->mrq_complete);
870 return card->current_mrq.error;
871 }
872
873 static int mspro_block_switch_interface(struct memstick_dev *card)
874 {
875 struct memstick_host *host = card->host;
876 struct mspro_block_data *msb = memstick_get_drvdata(card);
877 int rc = 0;
878
879 try_again:
880 if (msb->caps & MEMSTICK_CAP_PAR4)
881 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
882 else
883 return 0;
884
885 if (rc) {
886 printk(KERN_WARNING
887 "%s: could not switch to 4-bit mode, error %d\n",
888 dev_name(&card->dev), rc);
889 return 0;
890 }
891
892 msb->system = MEMSTICK_SYS_PAR4;
893 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
894 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
895 dev_name(&card->dev));
896
897 if (msb->caps & MEMSTICK_CAP_PAR8) {
898 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
899
900 if (!rc) {
901 msb->system = MEMSTICK_SYS_PAR8;
902 host->set_param(host, MEMSTICK_INTERFACE,
903 MEMSTICK_PAR8);
904 printk(KERN_INFO
905 "%s: switching to 8-bit parallel mode\n",
906 dev_name(&card->dev));
907 } else
908 printk(KERN_WARNING
909 "%s: could not switch to 8-bit mode, error %d\n",
910 dev_name(&card->dev), rc);
911 }
912
913 card->next_request = h_mspro_block_req_init;
914 msb->mrq_handler = h_mspro_block_default;
915 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
916 memstick_new_req(card->host);
917 wait_for_completion(&card->mrq_complete);
918 rc = card->current_mrq.error;
919
920 if (rc) {
921 printk(KERN_WARNING
922 "%s: interface error, trying to fall back to serial\n",
923 dev_name(&card->dev));
924 msb->system = MEMSTICK_SYS_SERIAL;
925 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
926 msleep(10);
927 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
928 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
929
930 rc = memstick_set_rw_addr(card);
931 if (!rc)
932 rc = mspro_block_set_interface(card, msb->system);
933
934 if (!rc) {
935 msleep(150);
936 rc = mspro_block_wait_for_ced(card);
937 if (rc)
938 return rc;
939
940 if (msb->caps & MEMSTICK_CAP_PAR8) {
941 msb->caps &= ~MEMSTICK_CAP_PAR8;
942 goto try_again;
943 }
944 }
945 }
946 return rc;
947 }
948
949 /* Memory allocated for attributes by this function should be freed by
950 * mspro_block_data_clear, no matter if the initialization process succeded
951 * or failed.
952 */
953 static int mspro_block_read_attributes(struct memstick_dev *card)
954 {
955 struct mspro_block_data *msb = memstick_get_drvdata(card);
956 struct mspro_param_register param = {
957 .system = msb->system,
958 .data_count = cpu_to_be16(1),
959 .data_address = 0,
960 .tpc_param = 0
961 };
962 struct mspro_attribute *attr = NULL;
963 struct mspro_sys_attr *s_attr = NULL;
964 unsigned char *buffer = NULL;
965 int cnt, rc, attr_count;
966 unsigned int addr;
967 unsigned short page_count;
968
969 attr = kmalloc(msb->page_size, GFP_KERNEL);
970 if (!attr)
971 return -ENOMEM;
972
973 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
974 msb->seg_count = 1;
975 msb->current_seg = 0;
976 msb->current_page = 0;
977 msb->data_dir = READ;
978 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
979
980 card->next_request = h_mspro_block_req_init;
981 msb->mrq_handler = h_mspro_block_transfer_data;
982 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
983 sizeof(param));
984 memstick_new_req(card->host);
985 wait_for_completion(&card->mrq_complete);
986 if (card->current_mrq.error) {
987 rc = card->current_mrq.error;
988 goto out_free_attr;
989 }
990
991 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
992 printk(KERN_ERR "%s: unrecognized device signature %x\n",
993 dev_name(&card->dev), be16_to_cpu(attr->signature));
994 rc = -ENODEV;
995 goto out_free_attr;
996 }
997
998 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
999 printk(KERN_WARNING "%s: way too many attribute entries\n",
1000 dev_name(&card->dev));
1001 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1002 } else
1003 attr_count = attr->count;
1004
1005 msb->attr_group.attrs = kzalloc((attr_count + 1)
1006 * sizeof(struct attribute),
1007 GFP_KERNEL);
1008 if (!msb->attr_group.attrs) {
1009 rc = -ENOMEM;
1010 goto out_free_attr;
1011 }
1012 msb->attr_group.name = "media_attributes";
1013
1014 buffer = kmalloc(msb->page_size, GFP_KERNEL);
1015 if (!buffer) {
1016 rc = -ENOMEM;
1017 goto out_free_attr;
1018 }
1019 memcpy(buffer, (char *)attr, msb->page_size);
1020 page_count = 1;
1021
1022 for (cnt = 0; cnt < attr_count; ++cnt) {
1023 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1024 if (!s_attr) {
1025 rc = -ENOMEM;
1026 goto out_free_buffer;
1027 }
1028
1029 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1030 addr = be32_to_cpu(attr->entries[cnt].address);
1031 rc = be32_to_cpu(attr->entries[cnt].size);
1032 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1033 "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
1034 s_attr->id = attr->entries[cnt].id;
1035 if (mspro_block_attr_name(s_attr->id))
1036 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1037 mspro_block_attr_name(attr->entries[cnt].id));
1038 else
1039 snprintf(s_attr->name, sizeof(s_attr->name),
1040 "attr_x%02x", attr->entries[cnt].id);
1041
1042 s_attr->dev_attr.attr.name = s_attr->name;
1043 s_attr->dev_attr.attr.mode = S_IRUGO;
1044 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1045
1046 if (!rc)
1047 continue;
1048
1049 s_attr->size = rc;
1050 s_attr->data = kmalloc(rc, GFP_KERNEL);
1051 if (!s_attr->data) {
1052 rc = -ENOMEM;
1053 goto out_free_buffer;
1054 }
1055
1056 if (((addr / msb->page_size)
1057 == be32_to_cpu(param.data_address))
1058 && (((addr + rc - 1) / msb->page_size)
1059 == be32_to_cpu(param.data_address))) {
1060 memcpy(s_attr->data, buffer + addr % msb->page_size,
1061 rc);
1062 continue;
1063 }
1064
1065 if (page_count <= (rc / msb->page_size)) {
1066 kfree(buffer);
1067 page_count = (rc / msb->page_size) + 1;
1068 buffer = kmalloc(page_count * msb->page_size,
1069 GFP_KERNEL);
1070 if (!buffer) {
1071 rc = -ENOMEM;
1072 goto out_free_attr;
1073 }
1074 }
1075
1076 param.system = msb->system;
1077 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
1078 param.data_address = cpu_to_be32(addr / msb->page_size);
1079 param.tpc_param = 0;
1080
1081 sg_init_one(&msb->req_sg[0], buffer,
1082 be16_to_cpu(param.data_count) * msb->page_size);
1083 msb->seg_count = 1;
1084 msb->current_seg = 0;
1085 msb->current_page = 0;
1086 msb->data_dir = READ;
1087 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1088
1089 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
1090 be32_to_cpu(param.data_address),
1091 be16_to_cpu(param.data_count));
1092
1093 card->next_request = h_mspro_block_req_init;
1094 msb->mrq_handler = h_mspro_block_transfer_data;
1095 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
1096 (char *)&param, sizeof(param));
1097 memstick_new_req(card->host);
1098 wait_for_completion(&card->mrq_complete);
1099 if (card->current_mrq.error) {
1100 rc = card->current_mrq.error;
1101 goto out_free_buffer;
1102 }
1103
1104 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
1105 }
1106
1107 rc = 0;
1108 out_free_buffer:
1109 kfree(buffer);
1110 out_free_attr:
1111 kfree(attr);
1112 return rc;
1113 }
1114
1115 static int mspro_block_init_card(struct memstick_dev *card)
1116 {
1117 struct mspro_block_data *msb = memstick_get_drvdata(card);
1118 struct memstick_host *host = card->host;
1119 int rc = 0;
1120
1121 msb->system = MEMSTICK_SYS_SERIAL;
1122 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1123 card->reg_addr.r_length = sizeof(struct ms_status_register);
1124 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1125 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1126
1127 if (memstick_set_rw_addr(card))
1128 return -EIO;
1129
1130 msb->caps = host->caps;
1131
1132 msleep(150);
1133 rc = mspro_block_wait_for_ced(card);
1134 if (rc)
1135 return rc;
1136
1137 rc = mspro_block_switch_interface(card);
1138 if (rc)
1139 return rc;
1140
1141 dev_dbg(&card->dev, "card activated\n");
1142 if (msb->system != MEMSTICK_SYS_SERIAL)
1143 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1144
1145 card->next_request = h_mspro_block_req_init;
1146 msb->mrq_handler = h_mspro_block_get_ro;
1147 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1148 sizeof(struct ms_status_register));
1149 memstick_new_req(card->host);
1150 wait_for_completion(&card->mrq_complete);
1151 if (card->current_mrq.error)
1152 return card->current_mrq.error;
1153
1154 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1155
1156 msb->page_size = 512;
1157 rc = mspro_block_read_attributes(card);
1158 if (rc)
1159 return rc;
1160
1161 dev_dbg(&card->dev, "attributes loaded\n");
1162 return 0;
1163
1164 }
1165
1166 static int mspro_block_init_disk(struct memstick_dev *card)
1167 {
1168 struct mspro_block_data *msb = memstick_get_drvdata(card);
1169 struct memstick_host *host = card->host;
1170 struct mspro_devinfo *dev_info = NULL;
1171 struct mspro_sys_info *sys_info = NULL;
1172 struct mspro_sys_attr *s_attr = NULL;
1173 int rc, disk_id;
1174 u64 limit = BLK_BOUNCE_HIGH;
1175 unsigned long capacity;
1176
1177 if (host->dev.dma_mask && *(host->dev.dma_mask))
1178 limit = *(host->dev.dma_mask);
1179
1180 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1181 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1182
1183 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1184 dev_info = s_attr->data;
1185 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1186 sys_info = s_attr->data;
1187 }
1188
1189 if (!dev_info || !sys_info)
1190 return -ENODEV;
1191
1192 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1193 msb->heads = be16_to_cpu(dev_info->heads);
1194 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1195
1196 msb->page_size = be16_to_cpu(sys_info->unit_size);
1197
1198 if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1199 return -ENOMEM;
1200
1201 mutex_lock(&mspro_block_disk_lock);
1202 rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1203 mutex_unlock(&mspro_block_disk_lock);
1204
1205 if (rc)
1206 return rc;
1207
1208 if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
1209 rc = -ENOSPC;
1210 goto out_release_id;
1211 }
1212
1213 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
1214 if (!msb->disk) {
1215 rc = -ENOMEM;
1216 goto out_release_id;
1217 }
1218
1219 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
1220 if (!msb->queue) {
1221 rc = -ENOMEM;
1222 goto out_put_disk;
1223 }
1224
1225 msb->queue->queuedata = card;
1226 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
1227
1228 blk_queue_bounce_limit(msb->queue, limit);
1229 blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1230 blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1231 blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1232 blk_queue_max_segment_size(msb->queue,
1233 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1234
1235 msb->disk->major = major;
1236 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1237 msb->disk->fops = &ms_block_bdops;
1238 msb->usage_count = 1;
1239 msb->disk->private_data = msb;
1240 msb->disk->queue = msb->queue;
1241 msb->disk->driverfs_dev = &card->dev;
1242
1243 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1244
1245 blk_queue_logical_block_size(msb->queue, msb->page_size);
1246
1247 capacity = be16_to_cpu(sys_info->user_block_count);
1248 capacity *= be16_to_cpu(sys_info->block_size);
1249 capacity *= msb->page_size >> 9;
1250 set_capacity(msb->disk, capacity);
1251 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1252
1253 add_disk(msb->disk);
1254 msb->active = 1;
1255 return 0;
1256
1257 out_put_disk:
1258 put_disk(msb->disk);
1259 out_release_id:
1260 mutex_lock(&mspro_block_disk_lock);
1261 idr_remove(&mspro_block_disk_idr, disk_id);
1262 mutex_unlock(&mspro_block_disk_lock);
1263 return rc;
1264 }
1265
1266 static void mspro_block_data_clear(struct mspro_block_data *msb)
1267 {
1268 int cnt;
1269 struct mspro_sys_attr *s_attr;
1270
1271 if (msb->attr_group.attrs) {
1272 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1273 s_attr = mspro_from_sysfs_attr(msb->attr_group
1274 .attrs[cnt]);
1275 kfree(s_attr->data);
1276 kfree(s_attr);
1277 }
1278 kfree(msb->attr_group.attrs);
1279 }
1280
1281 msb->card = NULL;
1282 }
1283
1284 static int mspro_block_check_card(struct memstick_dev *card)
1285 {
1286 struct mspro_block_data *msb = memstick_get_drvdata(card);
1287
1288 return (msb->active == 1);
1289 }
1290
1291 static int mspro_block_probe(struct memstick_dev *card)
1292 {
1293 struct mspro_block_data *msb;
1294 int rc = 0;
1295
1296 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1297 if (!msb)
1298 return -ENOMEM;
1299 memstick_set_drvdata(card, msb);
1300 msb->card = card;
1301 spin_lock_init(&msb->q_lock);
1302
1303 rc = mspro_block_init_card(card);
1304
1305 if (rc)
1306 goto out_free;
1307
1308 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1309 if (rc)
1310 goto out_free;
1311
1312 rc = mspro_block_init_disk(card);
1313 if (!rc) {
1314 card->check = mspro_block_check_card;
1315 card->stop = mspro_block_stop;
1316 card->start = mspro_block_start;
1317 return 0;
1318 }
1319
1320 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1321 out_free:
1322 memstick_set_drvdata(card, NULL);
1323 mspro_block_data_clear(msb);
1324 kfree(msb);
1325 return rc;
1326 }
1327
1328 static void mspro_block_remove(struct memstick_dev *card)
1329 {
1330 struct mspro_block_data *msb = memstick_get_drvdata(card);
1331 unsigned long flags;
1332
1333 del_gendisk(msb->disk);
1334 dev_dbg(&card->dev, "mspro block remove\n");
1335 spin_lock_irqsave(&msb->q_lock, flags);
1336 msb->eject = 1;
1337 blk_start_queue(msb->queue);
1338 spin_unlock_irqrestore(&msb->q_lock, flags);
1339
1340 blk_cleanup_queue(msb->queue);
1341 msb->queue = NULL;
1342
1343 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1344
1345 mutex_lock(&mspro_block_disk_lock);
1346 mspro_block_data_clear(msb);
1347 mutex_unlock(&mspro_block_disk_lock);
1348
1349 mspro_block_disk_release(msb->disk);
1350 memstick_set_drvdata(card, NULL);
1351 }
1352
1353 #ifdef CONFIG_PM
1354
1355 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1356 {
1357 struct mspro_block_data *msb = memstick_get_drvdata(card);
1358 unsigned long flags;
1359
1360 spin_lock_irqsave(&msb->q_lock, flags);
1361 blk_stop_queue(msb->queue);
1362 msb->active = 0;
1363 spin_unlock_irqrestore(&msb->q_lock, flags);
1364
1365 return 0;
1366 }
1367
1368 static int mspro_block_resume(struct memstick_dev *card)
1369 {
1370 struct mspro_block_data *msb = memstick_get_drvdata(card);
1371 unsigned long flags;
1372 int rc = 0;
1373
1374 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1375
1376 struct mspro_block_data *new_msb;
1377 struct memstick_host *host = card->host;
1378 struct mspro_sys_attr *s_attr, *r_attr;
1379 unsigned char cnt;
1380
1381 mutex_lock(&host->lock);
1382 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1383 if (!new_msb) {
1384 rc = -ENOMEM;
1385 goto out_unlock;
1386 }
1387
1388 new_msb->card = card;
1389 memstick_set_drvdata(card, new_msb);
1390 if (mspro_block_init_card(card))
1391 goto out_free;
1392
1393 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1394 && msb->attr_group.attrs[cnt]; ++cnt) {
1395 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1396 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1397
1398 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1399 && r_attr->id == s_attr->id) {
1400 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1401 break;
1402
1403 msb->active = 1;
1404 break;
1405 }
1406 }
1407
1408 out_free:
1409 memstick_set_drvdata(card, msb);
1410 mspro_block_data_clear(new_msb);
1411 kfree(new_msb);
1412 out_unlock:
1413 mutex_unlock(&host->lock);
1414
1415 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1416
1417 spin_lock_irqsave(&msb->q_lock, flags);
1418 blk_start_queue(msb->queue);
1419 spin_unlock_irqrestore(&msb->q_lock, flags);
1420 return rc;
1421 }
1422
1423 #else
1424
1425 #define mspro_block_suspend NULL
1426 #define mspro_block_resume NULL
1427
1428 #endif /* CONFIG_PM */
1429
1430 static struct memstick_device_id mspro_block_id_tbl[] = {
1431 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1432 MEMSTICK_CLASS_DUO},
1433 {}
1434 };
1435
1436
1437 static struct memstick_driver mspro_block_driver = {
1438 .driver = {
1439 .name = DRIVER_NAME,
1440 .owner = THIS_MODULE
1441 },
1442 .id_table = mspro_block_id_tbl,
1443 .probe = mspro_block_probe,
1444 .remove = mspro_block_remove,
1445 .suspend = mspro_block_suspend,
1446 .resume = mspro_block_resume
1447 };
1448
1449 static int __init mspro_block_init(void)
1450 {
1451 int rc = -ENOMEM;
1452
1453 rc = register_blkdev(major, DRIVER_NAME);
1454 if (rc < 0) {
1455 printk(KERN_ERR DRIVER_NAME ": failed to register "
1456 "major %d, error %d\n", major, rc);
1457 return rc;
1458 }
1459 if (!major)
1460 major = rc;
1461
1462 rc = memstick_register_driver(&mspro_block_driver);
1463 if (rc)
1464 unregister_blkdev(major, DRIVER_NAME);
1465 return rc;
1466 }
1467
1468 static void __exit mspro_block_exit(void)
1469 {
1470 memstick_unregister_driver(&mspro_block_driver);
1471 unregister_blkdev(major, DRIVER_NAME);
1472 idr_destroy(&mspro_block_disk_idr);
1473 }
1474
1475 module_init(mspro_block_init);
1476 module_exit(mspro_block_exit);
1477
1478 MODULE_LICENSE("GPL");
1479 MODULE_AUTHOR("Alex Dubov");
1480 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1481 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
Support for the Chinese Samsung S3C2440 based development boards