1
2
3
4
5
6
7
8
9
10
11
12
13
14
15#include <linux/blk-mq.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/mutex.h>
22#include <linux/memstick.h>
23#include <linux/module.h>
24
25#define DRIVER_NAME "mspro_block"
26
27static int major;
28module_param(major, int, 0644);
29
30#define MSPRO_BLOCK_MAX_SEGS 32
31#define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
32
33#define MSPRO_BLOCK_SIGNATURE 0xa5c3
34#define MSPRO_BLOCK_MAX_ATTRIBUTES 41
35
36#define MSPRO_BLOCK_PART_SHIFT 3
37
38enum {
39 MSPRO_BLOCK_ID_SYSINFO = 0x10,
40 MSPRO_BLOCK_ID_MODELNAME = 0x15,
41 MSPRO_BLOCK_ID_MBR = 0x20,
42 MSPRO_BLOCK_ID_PBR16 = 0x21,
43 MSPRO_BLOCK_ID_PBR32 = 0x22,
44 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
45 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
46 MSPRO_BLOCK_ID_DEVINFO = 0x30
47};
48
49struct mspro_sys_attr {
50 size_t size;
51 void *data;
52 unsigned char id;
53 char name[32];
54 struct device_attribute dev_attr;
55};
56
57struct mspro_attr_entry {
58 __be32 address;
59 __be32 size;
60 unsigned char id;
61 unsigned char reserved[3];
62} __attribute__((packed));
63
64struct mspro_attribute {
65 __be16 signature;
66 unsigned short version;
67 unsigned char count;
68 unsigned char reserved[11];
69 struct mspro_attr_entry entries[];
70} __attribute__((packed));
71
72struct mspro_sys_info {
73 unsigned char class;
74 unsigned char reserved0;
75 __be16 block_size;
76 __be16 block_count;
77 __be16 user_block_count;
78 __be16 page_size;
79 unsigned char reserved1[2];
80 unsigned char assembly_date[8];
81 __be32 serial_number;
82 unsigned char assembly_maker_code;
83 unsigned char assembly_model_code[3];
84 __be16 memory_maker_code;
85 __be16 memory_model_code;
86 unsigned char reserved2[4];
87 unsigned char vcc;
88 unsigned char vpp;
89 __be16 controller_number;
90 __be16 controller_function;
91 __be16 start_sector;
92 __be16 unit_size;
93 unsigned char ms_sub_class;
94 unsigned char reserved3[4];
95 unsigned char interface_type;
96 __be16 controller_code;
97 unsigned char format_type;
98 unsigned char reserved4;
99 unsigned char device_type;
100 unsigned char reserved5[7];
101 unsigned char mspro_id[16];
102 unsigned char reserved6[16];
103} __attribute__((packed));
104
105struct mspro_mbr {
106 unsigned char boot_partition;
107 unsigned char start_head;
108 unsigned char start_sector;
109 unsigned char start_cylinder;
110 unsigned char partition_type;
111 unsigned char end_head;
112 unsigned char end_sector;
113 unsigned char end_cylinder;
114 unsigned int start_sectors;
115 unsigned int sectors_per_partition;
116} __attribute__((packed));
117
118struct mspro_specfile {
119 char name[8];
120 char ext[3];
121 unsigned char attr;
122 unsigned char reserved[10];
123 unsigned short time;
124 unsigned short date;
125 unsigned short cluster;
126 unsigned int size;
127} __attribute__((packed));
128
129struct mspro_devinfo {
130 __be16 cylinders;
131 __be16 heads;
132 __be16 bytes_per_track;
133 __be16 bytes_per_sector;
134 __be16 sectors_per_track;
135 unsigned char reserved[6];
136} __attribute__((packed));
137
138struct mspro_block_data {
139 struct memstick_dev *card;
140 unsigned int usage_count;
141 unsigned int caps;
142 struct gendisk *disk;
143 struct request_queue *queue;
144 struct request *block_req;
145 struct blk_mq_tag_set tag_set;
146 spinlock_t q_lock;
147
148 unsigned short page_size;
149 unsigned short cylinders;
150 unsigned short heads;
151 unsigned short sectors_per_track;
152
153 unsigned char system;
154 unsigned char read_only:1,
155 eject:1,
156 data_dir:1,
157 active:1;
158 unsigned char transfer_cmd;
159
160 int (*mrq_handler)(struct memstick_dev *card,
161 struct memstick_request **mrq);
162
163
164
165
166
167 void (*setup_transfer)(struct memstick_dev *card,
168 u64 offset, size_t length);
169
170 struct attribute_group attr_group;
171
172 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
173 unsigned int seg_count;
174 unsigned int current_seg;
175 unsigned int current_page;
176};
177
178static DEFINE_IDR(mspro_block_disk_idr);
179static DEFINE_MUTEX(mspro_block_disk_lock);
180
181static int mspro_block_complete_req(struct memstick_dev *card, int error);
182
183
184
185static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
186{
187 struct gendisk *disk = bdev->bd_disk;
188 struct mspro_block_data *msb = disk->private_data;
189 int rc = -ENXIO;
190
191 mutex_lock(&mspro_block_disk_lock);
192
193 if (msb && msb->card) {
194 msb->usage_count++;
195 if ((mode & FMODE_WRITE) && msb->read_only)
196 rc = -EROFS;
197 else
198 rc = 0;
199 }
200
201 mutex_unlock(&mspro_block_disk_lock);
202
203 return rc;
204}
205
206
207static void mspro_block_disk_release(struct gendisk *disk)
208{
209 struct mspro_block_data *msb = disk->private_data;
210 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
211
212 mutex_lock(&mspro_block_disk_lock);
213
214 if (msb) {
215 if (msb->usage_count)
216 msb->usage_count--;
217
218 if (!msb->usage_count) {
219 kfree(msb);
220 disk->private_data = NULL;
221 idr_remove(&mspro_block_disk_idr, disk_id);
222 put_disk(disk);
223 }
224 }
225
226 mutex_unlock(&mspro_block_disk_lock);
227}
228
229static void mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
230{
231 mspro_block_disk_release(disk);
232}
233
234static int mspro_block_bd_getgeo(struct block_device *bdev,
235 struct hd_geometry *geo)
236{
237 struct mspro_block_data *msb = bdev->bd_disk->private_data;
238
239 geo->heads = msb->heads;
240 geo->sectors = msb->sectors_per_track;
241 geo->cylinders = msb->cylinders;
242
243 return 0;
244}
245
246static const struct block_device_operations ms_block_bdops = {
247 .open = mspro_block_bd_open,
248 .release = mspro_block_bd_release,
249 .getgeo = mspro_block_bd_getgeo,
250 .owner = THIS_MODULE
251};
252
253
254
255static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
256{
257 struct device_attribute *dev_attr
258 = container_of(attr, struct device_attribute, attr);
259 return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
260}
261
262static const char *mspro_block_attr_name(unsigned char tag)
263{
264 switch (tag) {
265 case MSPRO_BLOCK_ID_SYSINFO:
266 return "attr_sysinfo";
267 case MSPRO_BLOCK_ID_MODELNAME:
268 return "attr_modelname";
269 case MSPRO_BLOCK_ID_MBR:
270 return "attr_mbr";
271 case MSPRO_BLOCK_ID_PBR16:
272 return "attr_pbr16";
273 case MSPRO_BLOCK_ID_PBR32:
274 return "attr_pbr32";
275 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
276 return "attr_specfilevalues1";
277 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
278 return "attr_specfilevalues2";
279 case MSPRO_BLOCK_ID_DEVINFO:
280 return "attr_devinfo";
281 default:
282 return NULL;
283 };
284}
285
286typedef ssize_t (*sysfs_show_t)(struct device *dev,
287 struct device_attribute *attr,
288 char *buffer);
289
290static ssize_t mspro_block_attr_show_default(struct device *dev,
291 struct device_attribute *attr,
292 char *buffer)
293{
294 struct mspro_sys_attr *s_attr = container_of(attr,
295 struct mspro_sys_attr,
296 dev_attr);
297
298 ssize_t cnt, rc = 0;
299
300 for (cnt = 0; cnt < s_attr->size; cnt++) {
301 if (cnt && !(cnt % 16)) {
302 if (PAGE_SIZE - rc)
303 buffer[rc++] = '\n';
304 }
305
306 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
307 ((unsigned char *)s_attr->data)[cnt]);
308 }
309 return rc;
310}
311
312static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
313 struct device_attribute *attr,
314 char *buffer)
315{
316 struct mspro_sys_attr *x_attr = container_of(attr,
317 struct mspro_sys_attr,
318 dev_attr);
319 struct mspro_sys_info *x_sys = x_attr->data;
320 ssize_t rc = 0;
321 int date_tz = 0, date_tz_f = 0;
322
323 if (x_sys->assembly_date[0] > 0x80U) {
324 date_tz = (~x_sys->assembly_date[0]) + 1;
325 date_tz_f = date_tz & 3;
326 date_tz >>= 2;
327 date_tz = -date_tz;
328 date_tz_f *= 15;
329 } else if (x_sys->assembly_date[0] < 0x80U) {
330 date_tz = x_sys->assembly_date[0];
331 date_tz_f = date_tz & 3;
332 date_tz >>= 2;
333 date_tz_f *= 15;
334 }
335
336 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
337 x_sys->class);
338 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
339 be16_to_cpu(x_sys->block_size));
340 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
341 be16_to_cpu(x_sys->block_count));
342 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
343 be16_to_cpu(x_sys->user_block_count));
344 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
345 be16_to_cpu(x_sys->page_size));
346 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
347 "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
348 date_tz, date_tz_f,
349 be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
350 x_sys->assembly_date[3], x_sys->assembly_date[4],
351 x_sys->assembly_date[5], x_sys->assembly_date[6],
352 x_sys->assembly_date[7]);
353 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
354 be32_to_cpu(x_sys->serial_number));
355 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
356 "assembly maker code: %x\n",
357 x_sys->assembly_maker_code);
358 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
359 "%02x%02x%02x\n", x_sys->assembly_model_code[0],
360 x_sys->assembly_model_code[1],
361 x_sys->assembly_model_code[2]);
362 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
363 be16_to_cpu(x_sys->memory_maker_code));
364 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
365 be16_to_cpu(x_sys->memory_model_code));
366 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
367 x_sys->vcc);
368 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
369 x_sys->vpp);
370 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
371 be16_to_cpu(x_sys->controller_number));
372 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
373 "controller function: %x\n",
374 be16_to_cpu(x_sys->controller_function));
375 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
376 be16_to_cpu(x_sys->start_sector));
377 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
378 be16_to_cpu(x_sys->unit_size));
379 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
380 x_sys->ms_sub_class);
381 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
382 x_sys->interface_type);
383 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
384 be16_to_cpu(x_sys->controller_code));
385 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
386 x_sys->format_type);
387 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
388 x_sys->device_type);
389 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
390 x_sys->mspro_id);
391 return rc;
392}
393
394static ssize_t mspro_block_attr_show_modelname(struct device *dev,
395 struct device_attribute *attr,
396 char *buffer)
397{
398 struct mspro_sys_attr *s_attr = container_of(attr,
399 struct mspro_sys_attr,
400 dev_attr);
401
402 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
403}
404
405static ssize_t mspro_block_attr_show_mbr(struct device *dev,
406 struct device_attribute *attr,
407 char *buffer)
408{
409 struct mspro_sys_attr *x_attr = container_of(attr,
410 struct mspro_sys_attr,
411 dev_attr);
412 struct mspro_mbr *x_mbr = x_attr->data;
413 ssize_t rc = 0;
414
415 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
416 x_mbr->boot_partition);
417 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
418 x_mbr->start_head);
419 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
420 x_mbr->start_sector);
421 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
422 x_mbr->start_cylinder);
423 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
424 x_mbr->partition_type);
425 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
426 x_mbr->end_head);
427 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
428 x_mbr->end_sector);
429 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
430 x_mbr->end_cylinder);
431 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
432 x_mbr->start_sectors);
433 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
434 "sectors per partition: %x\n",
435 x_mbr->sectors_per_partition);
436 return rc;
437}
438
439static ssize_t mspro_block_attr_show_specfile(struct device *dev,
440 struct device_attribute *attr,
441 char *buffer)
442{
443 struct mspro_sys_attr *x_attr = container_of(attr,
444 struct mspro_sys_attr,
445 dev_attr);
446 struct mspro_specfile *x_spfile = x_attr->data;
447 char name[9], ext[4];
448 ssize_t rc = 0;
449
450 memcpy(name, x_spfile->name, 8);
451 name[8] = 0;
452 memcpy(ext, x_spfile->ext, 3);
453 ext[3] = 0;
454
455 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
456 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
457 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
458 x_spfile->attr);
459 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
460 x_spfile->time >> 11,
461 (x_spfile->time >> 5) & 0x3f,
462 (x_spfile->time & 0x1f) * 2);
463 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
464 (x_spfile->date >> 9) + 1980,
465 (x_spfile->date >> 5) & 0xf,
466 x_spfile->date & 0x1f);
467 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
468 x_spfile->cluster);
469 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
470 x_spfile->size);
471 return rc;
472}
473
474static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
475 struct device_attribute *attr,
476 char *buffer)
477{
478 struct mspro_sys_attr *x_attr = container_of(attr,
479 struct mspro_sys_attr,
480 dev_attr);
481 struct mspro_devinfo *x_devinfo = x_attr->data;
482 ssize_t rc = 0;
483
484 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
485 be16_to_cpu(x_devinfo->cylinders));
486 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
487 be16_to_cpu(x_devinfo->heads));
488 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
489 be16_to_cpu(x_devinfo->bytes_per_track));
490 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
491 be16_to_cpu(x_devinfo->bytes_per_sector));
492 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
493 be16_to_cpu(x_devinfo->sectors_per_track));
494 return rc;
495}
496
497static sysfs_show_t mspro_block_attr_show(unsigned char tag)
498{
499 switch (tag) {
500 case MSPRO_BLOCK_ID_SYSINFO:
501 return mspro_block_attr_show_sysinfo;
502 case MSPRO_BLOCK_ID_MODELNAME:
503 return mspro_block_attr_show_modelname;
504 case MSPRO_BLOCK_ID_MBR:
505 return mspro_block_attr_show_mbr;
506 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
507 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
508 return mspro_block_attr_show_specfile;
509 case MSPRO_BLOCK_ID_DEVINFO:
510 return mspro_block_attr_show_devinfo;
511 default:
512 return mspro_block_attr_show_default;
513 }
514}
515
516
517
518
519
520
521
522
523
524
525static int h_mspro_block_req_init(struct memstick_dev *card,
526 struct memstick_request **mrq)
527{
528 struct mspro_block_data *msb = memstick_get_drvdata(card);
529
530 *mrq = &card->current_mrq;
531 card->next_request = msb->mrq_handler;
532 return 0;
533}
534
535static int h_mspro_block_default(struct memstick_dev *card,
536 struct memstick_request **mrq)
537{
538 return mspro_block_complete_req(card, (*mrq)->error);
539}
540
541static int h_mspro_block_default_bad(struct memstick_dev *card,
542 struct memstick_request **mrq)
543{
544 return -ENXIO;
545}
546
547static int h_mspro_block_get_ro(struct memstick_dev *card,
548 struct memstick_request **mrq)
549{
550 struct mspro_block_data *msb = memstick_get_drvdata(card);
551
552 if (!(*mrq)->error) {
553 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
554 & MEMSTICK_STATUS0_WP)
555 msb->read_only = 1;
556 else
557 msb->read_only = 0;
558 }
559
560 return mspro_block_complete_req(card, (*mrq)->error);
561}
562
563static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
564 struct memstick_request **mrq)
565{
566 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
567
568 if (!(*mrq)->error) {
569 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
570 (*mrq)->error = -EFAULT;
571 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
572 return 0;
573 }
574
575 return mspro_block_complete_req(card, (*mrq)->error);
576}
577
578static int h_mspro_block_transfer_data(struct memstick_dev *card,
579 struct memstick_request **mrq)
580{
581 struct mspro_block_data *msb = memstick_get_drvdata(card);
582 unsigned char t_val = 0;
583 struct scatterlist t_sg = { 0 };
584 size_t t_offset;
585
586 if ((*mrq)->error)
587 return mspro_block_complete_req(card, (*mrq)->error);
588
589 switch ((*mrq)->tpc) {
590 case MS_TPC_WRITE_REG:
591 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
592 (*mrq)->need_card_int = 1;
593 return 0;
594 case MS_TPC_SET_CMD:
595 t_val = (*mrq)->int_reg;
596 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
597 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
598 goto has_int_reg;
599 return 0;
600 case MS_TPC_GET_INT:
601 t_val = (*mrq)->data[0];
602has_int_reg:
603 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
604 t_val = MSPRO_CMD_STOP;
605 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
606 card->next_request = h_mspro_block_default;
607 return 0;
608 }
609
610 if (msb->current_page
611 == (msb->req_sg[msb->current_seg].length
612 / msb->page_size)) {
613 msb->current_page = 0;
614 msb->current_seg++;
615
616 if (msb->current_seg == msb->seg_count) {
617 if (t_val & MEMSTICK_INT_CED) {
618 return mspro_block_complete_req(card,
619 0);
620 } else {
621 card->next_request
622 = h_mspro_block_wait_for_ced;
623 memstick_init_req(*mrq, MS_TPC_GET_INT,
624 NULL, 1);
625 return 0;
626 }
627 }
628 }
629
630 if (!(t_val & MEMSTICK_INT_BREQ)) {
631 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
632 return 0;
633 }
634
635 t_offset = msb->req_sg[msb->current_seg].offset;
636 t_offset += msb->current_page * msb->page_size;
637
638 sg_set_page(&t_sg,
639 nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
640 t_offset >> PAGE_SHIFT),
641 msb->page_size, offset_in_page(t_offset));
642
643 memstick_init_req_sg(*mrq, msb->data_dir == READ
644 ? MS_TPC_READ_LONG_DATA
645 : MS_TPC_WRITE_LONG_DATA,
646 &t_sg);
647 (*mrq)->need_card_int = 1;
648 return 0;
649 case MS_TPC_READ_LONG_DATA:
650 case MS_TPC_WRITE_LONG_DATA:
651 msb->current_page++;
652 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
653 t_val = (*mrq)->int_reg;
654 goto has_int_reg;
655 } else {
656 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
657 return 0;
658 }
659
660 default:
661 BUG();
662 }
663}
664
665
666
667
668
669
670
671
672
673
674static void h_mspro_block_setup_cmd(struct memstick_dev *card, u64 offset,
675 size_t length)
676{
677 struct mspro_block_data *msb = memstick_get_drvdata(card);
678 struct mspro_param_register param = {
679 .system = msb->system,
680 .data_count = cpu_to_be16((uint16_t)(length / msb->page_size)),
681
682 .data_address = 0,
683 .tpc_param = 0
684 };
685
686 do_div(offset, msb->page_size);
687 param.data_address = cpu_to_be32((uint32_t)offset);
688
689 card->next_request = h_mspro_block_req_init;
690 msb->mrq_handler = h_mspro_block_transfer_data;
691 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
692 ¶m, sizeof(param));
693}
694
695
696
697static int mspro_block_issue_req(struct memstick_dev *card, bool chunk)
698{
699 struct mspro_block_data *msb = memstick_get_drvdata(card);
700 u64 t_off;
701 unsigned int count;
702
703 while (chunk) {
704 msb->current_page = 0;
705 msb->current_seg = 0;
706 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
707 msb->block_req,
708 msb->req_sg);
709
710 if (!msb->seg_count) {
711 unsigned int bytes = blk_rq_cur_bytes(msb->block_req);
712
713 chunk = blk_update_request(msb->block_req,
714 BLK_STS_RESOURCE,
715 bytes);
716 if (chunk)
717 continue;
718 __blk_mq_end_request(msb->block_req,
719 BLK_STS_RESOURCE);
720 msb->block_req = NULL;
721 break;
722 }
723
724 t_off = blk_rq_pos(msb->block_req);
725 t_off <<= 9;
726 count = blk_rq_bytes(msb->block_req);
727
728 msb->setup_transfer(card, t_off, count);
729
730 msb->data_dir = rq_data_dir(msb->block_req);
731 msb->transfer_cmd = msb->data_dir == READ
732 ? MSPRO_CMD_READ_DATA
733 : MSPRO_CMD_WRITE_DATA;
734
735 memstick_new_req(card->host);
736 return 0;
737 }
738
739 return 1;
740}
741
742static int mspro_block_complete_req(struct memstick_dev *card, int error)
743{
744 struct mspro_block_data *msb = memstick_get_drvdata(card);
745 int cnt;
746 bool chunk;
747 unsigned int t_len = 0;
748 unsigned long flags;
749
750 spin_lock_irqsave(&msb->q_lock, flags);
751 dev_dbg(&card->dev, "complete %d, %d\n", msb->block_req ? 1 : 0,
752 error);
753
754 if (msb->block_req) {
755
756 if (error == -EAGAIN)
757 error = 0;
758
759 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
760 if (msb->data_dir == READ) {
761 for (cnt = 0; cnt < msb->current_seg; cnt++) {
762 t_len += msb->req_sg[cnt].length
763 / msb->page_size;
764
765 if (msb->current_page)
766 t_len += msb->current_page - 1;
767
768 t_len *= msb->page_size;
769 }
770 }
771 } else
772 t_len = blk_rq_bytes(msb->block_req);
773
774 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
775
776 if (error && !t_len)
777 t_len = blk_rq_cur_bytes(msb->block_req);
778
779 chunk = blk_update_request(msb->block_req,
780 errno_to_blk_status(error), t_len);
781 if (chunk) {
782 error = mspro_block_issue_req(card, chunk);
783 if (!error)
784 goto out;
785 } else {
786 __blk_mq_end_request(msb->block_req,
787 errno_to_blk_status(error));
788 msb->block_req = NULL;
789 }
790 } else {
791 if (!error)
792 error = -EAGAIN;
793 }
794
795 card->next_request = h_mspro_block_default_bad;
796 complete_all(&card->mrq_complete);
797out:
798 spin_unlock_irqrestore(&msb->q_lock, flags);
799 return error;
800}
801
802static void mspro_block_stop(struct memstick_dev *card)
803{
804 struct mspro_block_data *msb = memstick_get_drvdata(card);
805 int rc = 0;
806 unsigned long flags;
807
808 while (1) {
809 spin_lock_irqsave(&msb->q_lock, flags);
810 if (!msb->block_req) {
811 blk_mq_stop_hw_queues(msb->queue);
812 rc = 1;
813 }
814 spin_unlock_irqrestore(&msb->q_lock, flags);
815
816 if (rc)
817 break;
818
819 wait_for_completion(&card->mrq_complete);
820 }
821}
822
823static void mspro_block_start(struct memstick_dev *card)
824{
825 struct mspro_block_data *msb = memstick_get_drvdata(card);
826
827 blk_mq_start_hw_queues(msb->queue);
828}
829
830static blk_status_t mspro_queue_rq(struct blk_mq_hw_ctx *hctx,
831 const struct blk_mq_queue_data *bd)
832{
833 struct memstick_dev *card = hctx->queue->queuedata;
834 struct mspro_block_data *msb = memstick_get_drvdata(card);
835
836 spin_lock_irq(&msb->q_lock);
837
838 if (msb->block_req) {
839 spin_unlock_irq(&msb->q_lock);
840 return BLK_STS_DEV_RESOURCE;
841 }
842
843 if (msb->eject) {
844 spin_unlock_irq(&msb->q_lock);
845 blk_mq_start_request(bd->rq);
846 return BLK_STS_IOERR;
847 }
848
849 msb->block_req = bd->rq;
850 blk_mq_start_request(bd->rq);
851
852 if (mspro_block_issue_req(card, true))
853 msb->block_req = NULL;
854
855 spin_unlock_irq(&msb->q_lock);
856 return BLK_STS_OK;
857}
858
859
860
861static int mspro_block_wait_for_ced(struct memstick_dev *card)
862{
863 struct mspro_block_data *msb = memstick_get_drvdata(card);
864
865 card->next_request = h_mspro_block_req_init;
866 msb->mrq_handler = h_mspro_block_wait_for_ced;
867 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
868 memstick_new_req(card->host);
869 wait_for_completion(&card->mrq_complete);
870 return card->current_mrq.error;
871}
872
873static int mspro_block_set_interface(struct memstick_dev *card,
874 unsigned char sys_reg)
875{
876 struct memstick_host *host = card->host;
877 struct mspro_block_data *msb = memstick_get_drvdata(card);
878 struct mspro_param_register param = {
879 .system = sys_reg,
880 .data_count = 0,
881 .data_address = 0,
882 .tpc_param = 0
883 };
884
885 card->next_request = h_mspro_block_req_init;
886 msb->mrq_handler = h_mspro_block_default;
887 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m,
888 sizeof(param));
889 memstick_new_req(host);
890 wait_for_completion(&card->mrq_complete);
891 return card->current_mrq.error;
892}
893
894static int mspro_block_switch_interface(struct memstick_dev *card)
895{
896 struct memstick_host *host = card->host;
897 struct mspro_block_data *msb = memstick_get_drvdata(card);
898 int rc = 0;
899
900try_again:
901 if (msb->caps & MEMSTICK_CAP_PAR4)
902 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
903 else
904 return 0;
905
906 if (rc) {
907 printk(KERN_WARNING
908 "%s: could not switch to 4-bit mode, error %d\n",
909 dev_name(&card->dev), rc);
910 return 0;
911 }
912
913 msb->system = MEMSTICK_SYS_PAR4;
914 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
915 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
916 dev_name(&card->dev));
917
918 if (msb->caps & MEMSTICK_CAP_PAR8) {
919 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
920
921 if (!rc) {
922 msb->system = MEMSTICK_SYS_PAR8;
923 host->set_param(host, MEMSTICK_INTERFACE,
924 MEMSTICK_PAR8);
925 printk(KERN_INFO
926 "%s: switching to 8-bit parallel mode\n",
927 dev_name(&card->dev));
928 } else
929 printk(KERN_WARNING
930 "%s: could not switch to 8-bit mode, error %d\n",
931 dev_name(&card->dev), rc);
932 }
933
934 card->next_request = h_mspro_block_req_init;
935 msb->mrq_handler = h_mspro_block_default;
936 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
937 memstick_new_req(card->host);
938 wait_for_completion(&card->mrq_complete);
939 rc = card->current_mrq.error;
940
941 if (rc) {
942 printk(KERN_WARNING
943 "%s: interface error, trying to fall back to serial\n",
944 dev_name(&card->dev));
945 msb->system = MEMSTICK_SYS_SERIAL;
946 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
947 msleep(10);
948 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
949 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
950
951 rc = memstick_set_rw_addr(card);
952 if (!rc)
953 rc = mspro_block_set_interface(card, msb->system);
954
955 if (!rc) {
956 msleep(150);
957 rc = mspro_block_wait_for_ced(card);
958 if (rc)
959 return rc;
960
961 if (msb->caps & MEMSTICK_CAP_PAR8) {
962 msb->caps &= ~MEMSTICK_CAP_PAR8;
963 goto try_again;
964 }
965 }
966 }
967 return rc;
968}
969
970
971
972
973
974static int mspro_block_read_attributes(struct memstick_dev *card)
975{
976 struct mspro_block_data *msb = memstick_get_drvdata(card);
977 struct mspro_attribute *attr = NULL;
978 struct mspro_sys_attr *s_attr = NULL;
979 unsigned char *buffer = NULL;
980 int cnt, rc, attr_count;
981
982
983
984
985
986 unsigned int addr, attr_offset = 0, attr_len = msb->page_size;
987
988 attr = kmalloc(msb->page_size, GFP_KERNEL);
989 if (!attr)
990 return -ENOMEM;
991
992 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
993 msb->seg_count = 1;
994 msb->current_seg = 0;
995 msb->current_page = 0;
996 msb->data_dir = READ;
997 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
998
999 msb->setup_transfer(card, attr_offset, attr_len);
1000
1001 memstick_new_req(card->host);
1002 wait_for_completion(&card->mrq_complete);
1003 if (card->current_mrq.error) {
1004 rc = card->current_mrq.error;
1005 goto out_free_attr;
1006 }
1007
1008 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
1009 printk(KERN_ERR "%s: unrecognized device signature %x\n",
1010 dev_name(&card->dev), be16_to_cpu(attr->signature));
1011 rc = -ENODEV;
1012 goto out_free_attr;
1013 }
1014
1015 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1016 printk(KERN_WARNING "%s: way too many attribute entries\n",
1017 dev_name(&card->dev));
1018 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1019 } else
1020 attr_count = attr->count;
1021
1022 msb->attr_group.attrs = kcalloc(attr_count + 1,
1023 sizeof(*msb->attr_group.attrs),
1024 GFP_KERNEL);
1025 if (!msb->attr_group.attrs) {
1026 rc = -ENOMEM;
1027 goto out_free_attr;
1028 }
1029 msb->attr_group.name = "media_attributes";
1030
1031 buffer = kmemdup(attr, attr_len, GFP_KERNEL);
1032 if (!buffer) {
1033 rc = -ENOMEM;
1034 goto out_free_attr;
1035 }
1036
1037 for (cnt = 0; cnt < attr_count; ++cnt) {
1038 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1039 if (!s_attr) {
1040 rc = -ENOMEM;
1041 goto out_free_buffer;
1042 }
1043
1044 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1045 addr = be32_to_cpu(attr->entries[cnt].address);
1046 s_attr->size = be32_to_cpu(attr->entries[cnt].size);
1047 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1048 "size %zx\n", cnt, attr->entries[cnt].id, addr,
1049 s_attr->size);
1050 s_attr->id = attr->entries[cnt].id;
1051 if (mspro_block_attr_name(s_attr->id))
1052 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1053 mspro_block_attr_name(attr->entries[cnt].id));
1054 else
1055 snprintf(s_attr->name, sizeof(s_attr->name),
1056 "attr_x%02x", attr->entries[cnt].id);
1057
1058 sysfs_attr_init(&s_attr->dev_attr.attr);
1059 s_attr->dev_attr.attr.name = s_attr->name;
1060 s_attr->dev_attr.attr.mode = S_IRUGO;
1061 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1062
1063 if (!s_attr->size)
1064 continue;
1065
1066 s_attr->data = kmalloc(s_attr->size, GFP_KERNEL);
1067 if (!s_attr->data) {
1068 rc = -ENOMEM;
1069 goto out_free_buffer;
1070 }
1071
1072 if (((addr / msb->page_size) == (attr_offset / msb->page_size))
1073 && (((addr + s_attr->size - 1) / msb->page_size)
1074 == (attr_offset / msb->page_size))) {
1075 memcpy(s_attr->data, buffer + addr % msb->page_size,
1076 s_attr->size);
1077 continue;
1078 }
1079
1080 attr_offset = (addr / msb->page_size) * msb->page_size;
1081
1082 if ((attr_offset + attr_len) < (addr + s_attr->size)) {
1083 kfree(buffer);
1084 attr_len = (((addr + s_attr->size) / msb->page_size)
1085 + 1 ) * msb->page_size - attr_offset;
1086 buffer = kmalloc(attr_len, GFP_KERNEL);
1087 if (!buffer) {
1088 rc = -ENOMEM;
1089 goto out_free_attr;
1090 }
1091 }
1092
1093 sg_init_one(&msb->req_sg[0], buffer, attr_len);
1094 msb->seg_count = 1;
1095 msb->current_seg = 0;
1096 msb->current_page = 0;
1097 msb->data_dir = READ;
1098 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1099
1100 dev_dbg(&card->dev, "reading attribute range %x, %x\n",
1101 attr_offset, attr_len);
1102
1103 msb->setup_transfer(card, attr_offset, attr_len);
1104 memstick_new_req(card->host);
1105 wait_for_completion(&card->mrq_complete);
1106 if (card->current_mrq.error) {
1107 rc = card->current_mrq.error;
1108 goto out_free_buffer;
1109 }
1110
1111 memcpy(s_attr->data, buffer + addr % msb->page_size,
1112 s_attr->size);
1113 }
1114
1115 rc = 0;
1116out_free_buffer:
1117 kfree(buffer);
1118out_free_attr:
1119 kfree(attr);
1120 return rc;
1121}
1122
1123static int mspro_block_init_card(struct memstick_dev *card)
1124{
1125 struct mspro_block_data *msb = memstick_get_drvdata(card);
1126 struct memstick_host *host = card->host;
1127 int rc = 0;
1128
1129 msb->system = MEMSTICK_SYS_SERIAL;
1130 msb->setup_transfer = h_mspro_block_setup_cmd;
1131
1132 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1133 card->reg_addr.r_length = sizeof(struct ms_status_register);
1134 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1135 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1136
1137 if (memstick_set_rw_addr(card))
1138 return -EIO;
1139
1140 msb->caps = host->caps;
1141
1142 msleep(150);
1143 rc = mspro_block_wait_for_ced(card);
1144 if (rc)
1145 return rc;
1146
1147 rc = mspro_block_switch_interface(card);
1148 if (rc)
1149 return rc;
1150
1151 dev_dbg(&card->dev, "card activated\n");
1152 if (msb->system != MEMSTICK_SYS_SERIAL)
1153 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1154
1155 card->next_request = h_mspro_block_req_init;
1156 msb->mrq_handler = h_mspro_block_get_ro;
1157 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1158 sizeof(struct ms_status_register));
1159 memstick_new_req(card->host);
1160 wait_for_completion(&card->mrq_complete);
1161 if (card->current_mrq.error)
1162 return card->current_mrq.error;
1163
1164 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1165
1166 msb->page_size = 512;
1167 rc = mspro_block_read_attributes(card);
1168 if (rc)
1169 return rc;
1170
1171 dev_dbg(&card->dev, "attributes loaded\n");
1172 return 0;
1173
1174}
1175
1176static const struct blk_mq_ops mspro_mq_ops = {
1177 .queue_rq = mspro_queue_rq,
1178};
1179
1180static int mspro_block_init_disk(struct memstick_dev *card)
1181{
1182 struct mspro_block_data *msb = memstick_get_drvdata(card);
1183 struct mspro_devinfo *dev_info = NULL;
1184 struct mspro_sys_info *sys_info = NULL;
1185 struct mspro_sys_attr *s_attr = NULL;
1186 int rc, disk_id;
1187 unsigned long capacity;
1188
1189 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1190 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1191
1192 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1193 dev_info = s_attr->data;
1194 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1195 sys_info = s_attr->data;
1196 }
1197
1198 if (!dev_info || !sys_info)
1199 return -ENODEV;
1200
1201 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1202 msb->heads = be16_to_cpu(dev_info->heads);
1203 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1204
1205 msb->page_size = be16_to_cpu(sys_info->unit_size);
1206
1207 mutex_lock(&mspro_block_disk_lock);
1208 disk_id = idr_alloc(&mspro_block_disk_idr, card, 0, 256, GFP_KERNEL);
1209 mutex_unlock(&mspro_block_disk_lock);
1210 if (disk_id < 0)
1211 return disk_id;
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_mq_init_sq_queue(&msb->tag_set, &mspro_mq_ops, 2,
1220 BLK_MQ_F_SHOULD_MERGE);
1221 if (IS_ERR(msb->queue)) {
1222 rc = PTR_ERR(msb->queue);
1223 msb->queue = NULL;
1224 goto out_put_disk;
1225 }
1226
1227 msb->queue->queuedata = card;
1228
1229 blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1230 blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1231 blk_queue_max_segment_size(msb->queue,
1232 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1233
1234 msb->disk->major = major;
1235 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1236 msb->disk->fops = &ms_block_bdops;
1237 msb->usage_count = 1;
1238 msb->disk->private_data = msb;
1239 msb->disk->queue = msb->queue;
1240
1241 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1242
1243 blk_queue_logical_block_size(msb->queue, msb->page_size);
1244
1245 capacity = be16_to_cpu(sys_info->user_block_count);
1246 capacity *= be16_to_cpu(sys_info->block_size);
1247 capacity *= msb->page_size >> 9;
1248 set_capacity(msb->disk, capacity);
1249 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1250
1251 device_add_disk(&card->dev, msb->disk, NULL);
1252 msb->active = 1;
1253 return 0;
1254
1255out_put_disk:
1256 put_disk(msb->disk);
1257out_release_id:
1258 mutex_lock(&mspro_block_disk_lock);
1259 idr_remove(&mspro_block_disk_idr, disk_id);
1260 mutex_unlock(&mspro_block_disk_lock);
1261 return rc;
1262}
1263
1264static void mspro_block_data_clear(struct mspro_block_data *msb)
1265{
1266 int cnt;
1267 struct mspro_sys_attr *s_attr;
1268
1269 if (msb->attr_group.attrs) {
1270 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1271 s_attr = mspro_from_sysfs_attr(msb->attr_group
1272 .attrs[cnt]);
1273 kfree(s_attr->data);
1274 kfree(s_attr);
1275 }
1276 kfree(msb->attr_group.attrs);
1277 }
1278
1279 msb->card = NULL;
1280}
1281
1282static int mspro_block_check_card(struct memstick_dev *card)
1283{
1284 struct mspro_block_data *msb = memstick_get_drvdata(card);
1285
1286 return (msb->active == 1);
1287}
1288
1289static int mspro_block_probe(struct memstick_dev *card)
1290{
1291 struct mspro_block_data *msb;
1292 int rc = 0;
1293
1294 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1295 if (!msb)
1296 return -ENOMEM;
1297 memstick_set_drvdata(card, msb);
1298 msb->card = card;
1299 spin_lock_init(&msb->q_lock);
1300
1301 rc = mspro_block_init_card(card);
1302
1303 if (rc)
1304 goto out_free;
1305
1306 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1307 if (rc)
1308 goto out_free;
1309
1310 rc = mspro_block_init_disk(card);
1311 if (!rc) {
1312 card->check = mspro_block_check_card;
1313 card->stop = mspro_block_stop;
1314 card->start = mspro_block_start;
1315 return 0;
1316 }
1317
1318 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1319out_free:
1320 memstick_set_drvdata(card, NULL);
1321 mspro_block_data_clear(msb);
1322 kfree(msb);
1323 return rc;
1324}
1325
1326static void mspro_block_remove(struct memstick_dev *card)
1327{
1328 struct mspro_block_data *msb = memstick_get_drvdata(card);
1329 unsigned long flags;
1330
1331 spin_lock_irqsave(&msb->q_lock, flags);
1332 msb->eject = 1;
1333 spin_unlock_irqrestore(&msb->q_lock, flags);
1334 blk_mq_start_hw_queues(msb->queue);
1335
1336 del_gendisk(msb->disk);
1337 dev_dbg(&card->dev, "mspro block remove\n");
1338
1339 blk_cleanup_queue(msb->queue);
1340 blk_mq_free_tag_set(&msb->tag_set);
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
1355static 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 blk_mq_stop_hw_queues(msb->queue);
1361
1362 spin_lock_irqsave(&msb->q_lock, flags);
1363 msb->active = 0;
1364 spin_unlock_irqrestore(&msb->q_lock, flags);
1365
1366 return 0;
1367}
1368
1369static int mspro_block_resume(struct memstick_dev *card)
1370{
1371 struct mspro_block_data *msb = memstick_get_drvdata(card);
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
1408out_free:
1409 memstick_set_drvdata(card, msb);
1410 mspro_block_data_clear(new_msb);
1411 kfree(new_msb);
1412out_unlock:
1413 mutex_unlock(&host->lock);
1414
1415#endif
1416
1417 blk_mq_start_hw_queues(msb->queue);
1418 return rc;
1419}
1420
1421#else
1422
1423#define mspro_block_suspend NULL
1424#define mspro_block_resume NULL
1425
1426#endif
1427
1428static struct memstick_device_id mspro_block_id_tbl[] = {
1429 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1430 MEMSTICK_CLASS_DUO},
1431 {}
1432};
1433
1434
1435static struct memstick_driver mspro_block_driver = {
1436 .driver = {
1437 .name = DRIVER_NAME,
1438 .owner = THIS_MODULE
1439 },
1440 .id_table = mspro_block_id_tbl,
1441 .probe = mspro_block_probe,
1442 .remove = mspro_block_remove,
1443 .suspend = mspro_block_suspend,
1444 .resume = mspro_block_resume
1445};
1446
1447static int __init mspro_block_init(void)
1448{
1449 int rc = -ENOMEM;
1450
1451 rc = register_blkdev(major, DRIVER_NAME);
1452 if (rc < 0) {
1453 printk(KERN_ERR DRIVER_NAME ": failed to register "
1454 "major %d, error %d\n", major, rc);
1455 return rc;
1456 }
1457 if (!major)
1458 major = rc;
1459
1460 rc = memstick_register_driver(&mspro_block_driver);
1461 if (rc)
1462 unregister_blkdev(major, DRIVER_NAME);
1463 return rc;
1464}
1465
1466static void __exit mspro_block_exit(void)
1467{
1468 memstick_unregister_driver(&mspro_block_driver);
1469 unregister_blkdev(major, DRIVER_NAME);
1470 idr_destroy(&mspro_block_disk_idr);
1471}
1472
1473module_init(mspro_block_init);
1474module_exit(mspro_block_exit);
1475
1476MODULE_LICENSE("GPL");
1477MODULE_AUTHOR("Alex Dubov");
1478MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1479MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
1480
