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