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[mirror_ubuntu-zesty-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/smp_lock.h>
22 #include <linux/memstick.h>
23
24 #define DRIVER_NAME "mspro_block"
25
26 static int major;
27 module_param(major, int, 0644);
28
29 #define MSPRO_BLOCK_MAX_SEGS 32
30 #define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
31
32 #define MSPRO_BLOCK_SIGNATURE 0xa5c3
33 #define MSPRO_BLOCK_MAX_ATTRIBUTES 41
34
35 #define MSPRO_BLOCK_PART_SHIFT 3
36
37 enum {
38 MSPRO_BLOCK_ID_SYSINFO = 0x10,
39 MSPRO_BLOCK_ID_MODELNAME = 0x15,
40 MSPRO_BLOCK_ID_MBR = 0x20,
41 MSPRO_BLOCK_ID_PBR16 = 0x21,
42 MSPRO_BLOCK_ID_PBR32 = 0x22,
43 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
44 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
45 MSPRO_BLOCK_ID_DEVINFO = 0x30
46 };
47
48 struct mspro_sys_attr {
49 size_t size;
50 void *data;
51 unsigned char id;
52 char name[32];
53 struct device_attribute dev_attr;
54 };
55
56 struct mspro_attr_entry {
57 __be32 address;
58 __be32 size;
59 unsigned char id;
60 unsigned char reserved[3];
61 } __attribute__((packed));
62
63 struct mspro_attribute {
64 __be16 signature;
65 unsigned short version;
66 unsigned char count;
67 unsigned char reserved[11];
68 struct mspro_attr_entry entries[];
69 } __attribute__((packed));
70
71 struct mspro_sys_info {
72 unsigned char class;
73 unsigned char reserved0;
74 __be16 block_size;
75 __be16 block_count;
76 __be16 user_block_count;
77 __be16 page_size;
78 unsigned char reserved1[2];
79 unsigned char assembly_date[8];
80 __be32 serial_number;
81 unsigned char assembly_maker_code;
82 unsigned char assembly_model_code[3];
83 __be16 memory_maker_code;
84 __be16 memory_model_code;
85 unsigned char reserved2[4];
86 unsigned char vcc;
87 unsigned char vpp;
88 __be16 controller_number;
89 __be16 controller_function;
90 __be16 start_sector;
91 __be16 unit_size;
92 unsigned char ms_sub_class;
93 unsigned char reserved3[4];
94 unsigned char interface_type;
95 __be16 controller_code;
96 unsigned char format_type;
97 unsigned char reserved4;
98 unsigned char device_type;
99 unsigned char reserved5[7];
100 unsigned char mspro_id[16];
101 unsigned char reserved6[16];
102 } __attribute__((packed));
103
104 struct mspro_mbr {
105 unsigned char boot_partition;
106 unsigned char start_head;
107 unsigned char start_sector;
108 unsigned char start_cylinder;
109 unsigned char partition_type;
110 unsigned char end_head;
111 unsigned char end_sector;
112 unsigned char end_cylinder;
113 unsigned int start_sectors;
114 unsigned int sectors_per_partition;
115 } __attribute__((packed));
116
117 struct mspro_specfile {
118 char name[8];
119 char ext[3];
120 unsigned char attr;
121 unsigned char reserved[10];
122 unsigned short time;
123 unsigned short date;
124 unsigned short cluster;
125 unsigned int size;
126 } __attribute__((packed));
127
128 struct mspro_devinfo {
129 __be16 cylinders;
130 __be16 heads;
131 __be16 bytes_per_track;
132 __be16 bytes_per_sector;
133 __be16 sectors_per_track;
134 unsigned char reserved[6];
135 } __attribute__((packed));
136
137 struct mspro_block_data {
138 struct memstick_dev *card;
139 unsigned int usage_count;
140 unsigned int caps;
141 struct gendisk *disk;
142 struct request_queue *queue;
143 struct request *block_req;
144 spinlock_t q_lock;
145
146 unsigned short page_size;
147 unsigned short cylinders;
148 unsigned short heads;
149 unsigned short sectors_per_track;
150
151 unsigned char system;
152 unsigned char read_only:1,
153 eject:1,
154 has_request:1,
155 data_dir:1,
156 active:1;
157 unsigned char transfer_cmd;
158
159 int (*mrq_handler)(struct memstick_dev *card,
160 struct memstick_request **mrq);
161
162 struct attribute_group attr_group;
163
164 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
165 unsigned int seg_count;
166 unsigned int current_seg;
167 unsigned int current_page;
168 };
169
170 static DEFINE_IDR(mspro_block_disk_idr);
171 static DEFINE_MUTEX(mspro_block_disk_lock);
172
173 static int mspro_block_complete_req(struct memstick_dev *card, int error);
174
175 /*** Block device ***/
176
177 static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
178 {
179 struct gendisk *disk = bdev->bd_disk;
180 struct mspro_block_data *msb = disk->private_data;
181 int rc = -ENXIO;
182
183 lock_kernel();
184 mutex_lock(&mspro_block_disk_lock);
185
186 if (msb && msb->card) {
187 msb->usage_count++;
188 if ((mode & FMODE_WRITE) && msb->read_only)
189 rc = -EROFS;
190 else
191 rc = 0;
192 }
193
194 mutex_unlock(&mspro_block_disk_lock);
195 unlock_kernel();
196
197 return rc;
198 }
199
200
201 static int mspro_block_disk_release(struct gendisk *disk)
202 {
203 struct mspro_block_data *msb = disk->private_data;
204 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
205
206 mutex_lock(&mspro_block_disk_lock);
207
208 if (msb) {
209 if (msb->usage_count)
210 msb->usage_count--;
211
212 if (!msb->usage_count) {
213 kfree(msb);
214 disk->private_data = NULL;
215 idr_remove(&mspro_block_disk_idr, disk_id);
216 put_disk(disk);
217 }
218 }
219
220 mutex_unlock(&mspro_block_disk_lock);
221
222 return 0;
223 }
224
225 static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
226 {
227 int ret;
228 lock_kernel();
229 ret = mspro_block_disk_release(disk);
230 unlock_kernel();
231 return ret;
232 }
233
234 static 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
246 static 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 /*** Information ***/
254
255 static 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
262 static 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
286 typedef ssize_t (*sysfs_show_t)(struct device *dev,
287 struct device_attribute *attr,
288 char *buffer);
289
290 static 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
312 static 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
394 static 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
405 static 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
439 static 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
474 static 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
497 static 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 /*** Protocol handlers ***/
517
518 /*
519 * Functions prefixed with "h_" are protocol callbacks. They can be called from
520 * interrupt context. Return value of 0 means that request processing is still
521 * ongoing, while special error value of -EAGAIN means that current request is
522 * finished (and request processor should come back some time later).
523 */
524
525 static 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
535 static 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
541 static int h_mspro_block_default_bad(struct memstick_dev *card,
542 struct memstick_request **mrq)
543 {
544 return -ENXIO;
545 }
546
547 static 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
563 static 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
578 static 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];
602 has_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 /*** Data transfer ***/
666
667 static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
668 {
669 struct mspro_block_data *msb = memstick_get_drvdata(card);
670 sector_t t_sec;
671 unsigned int count;
672 struct mspro_param_register param;
673
674 try_again:
675 while (chunk) {
676 msb->current_page = 0;
677 msb->current_seg = 0;
678 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
679 msb->block_req,
680 msb->req_sg);
681
682 if (!msb->seg_count) {
683 chunk = __blk_end_request_cur(msb->block_req, -ENOMEM);
684 continue;
685 }
686
687 t_sec = blk_rq_pos(msb->block_req) << 9;
688 sector_div(t_sec, msb->page_size);
689
690 count = blk_rq_bytes(msb->block_req);
691 count /= msb->page_size;
692
693 param.system = msb->system;
694 param.data_count = cpu_to_be16(count);
695 param.data_address = cpu_to_be32((uint32_t)t_sec);
696 param.tpc_param = 0;
697
698 msb->data_dir = rq_data_dir(msb->block_req);
699 msb->transfer_cmd = msb->data_dir == READ
700 ? MSPRO_CMD_READ_DATA
701 : MSPRO_CMD_WRITE_DATA;
702
703 dev_dbg(&card->dev, "data transfer: cmd %x, "
704 "lba %x, count %x\n", msb->transfer_cmd,
705 be32_to_cpu(param.data_address), count);
706
707 card->next_request = h_mspro_block_req_init;
708 msb->mrq_handler = h_mspro_block_transfer_data;
709 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
710 &param, sizeof(param));
711 memstick_new_req(card->host);
712 return 0;
713 }
714
715 dev_dbg(&card->dev, "blk_fetch\n");
716 msb->block_req = blk_fetch_request(msb->queue);
717 if (!msb->block_req) {
718 dev_dbg(&card->dev, "issue end\n");
719 return -EAGAIN;
720 }
721
722 dev_dbg(&card->dev, "trying again\n");
723 chunk = 1;
724 goto try_again;
725 }
726
727 static int mspro_block_complete_req(struct memstick_dev *card, int error)
728 {
729 struct mspro_block_data *msb = memstick_get_drvdata(card);
730 int chunk, cnt;
731 unsigned int t_len = 0;
732 unsigned long flags;
733
734 spin_lock_irqsave(&msb->q_lock, flags);
735 dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
736 error);
737
738 if (msb->has_request) {
739 /* Nothing to do - not really an error */
740 if (error == -EAGAIN)
741 error = 0;
742
743 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
744 if (msb->data_dir == READ) {
745 for (cnt = 0; cnt < msb->current_seg; cnt++)
746 t_len += msb->req_sg[cnt].length
747 / msb->page_size;
748
749 if (msb->current_page)
750 t_len += msb->current_page - 1;
751
752 t_len *= msb->page_size;
753 }
754 } else
755 t_len = blk_rq_bytes(msb->block_req);
756
757 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
758
759 if (error && !t_len)
760 t_len = blk_rq_cur_bytes(msb->block_req);
761
762 chunk = __blk_end_request(msb->block_req, error, t_len);
763
764 error = mspro_block_issue_req(card, chunk);
765
766 if (!error)
767 goto out;
768 else
769 msb->has_request = 0;
770 } else {
771 if (!error)
772 error = -EAGAIN;
773 }
774
775 card->next_request = h_mspro_block_default_bad;
776 complete_all(&card->mrq_complete);
777 out:
778 spin_unlock_irqrestore(&msb->q_lock, flags);
779 return error;
780 }
781
782 static void mspro_block_stop(struct memstick_dev *card)
783 {
784 struct mspro_block_data *msb = memstick_get_drvdata(card);
785 int rc = 0;
786 unsigned long flags;
787
788 while (1) {
789 spin_lock_irqsave(&msb->q_lock, flags);
790 if (!msb->has_request) {
791 blk_stop_queue(msb->queue);
792 rc = 1;
793 }
794 spin_unlock_irqrestore(&msb->q_lock, flags);
795
796 if (rc)
797 break;
798
799 wait_for_completion(&card->mrq_complete);
800 }
801 }
802
803 static void mspro_block_start(struct memstick_dev *card)
804 {
805 struct mspro_block_data *msb = memstick_get_drvdata(card);
806 unsigned long flags;
807
808 spin_lock_irqsave(&msb->q_lock, flags);
809 blk_start_queue(msb->queue);
810 spin_unlock_irqrestore(&msb->q_lock, flags);
811 }
812
813 static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
814 {
815 if (req->cmd_type != REQ_TYPE_FS &&
816 req->cmd_type != REQ_TYPE_BLOCK_PC) {
817 blk_dump_rq_flags(req, "MSPro unsupported request");
818 return BLKPREP_KILL;
819 }
820
821 req->cmd_flags |= REQ_DONTPREP;
822
823 return BLKPREP_OK;
824 }
825
826 static void mspro_block_submit_req(struct request_queue *q)
827 {
828 struct memstick_dev *card = q->queuedata;
829 struct mspro_block_data *msb = memstick_get_drvdata(card);
830 struct request *req = NULL;
831
832 if (msb->has_request)
833 return;
834
835 if (msb->eject) {
836 while ((req = blk_fetch_request(q)) != NULL)
837 __blk_end_request_all(req, -ENODEV);
838
839 return;
840 }
841
842 msb->has_request = 1;
843 if (mspro_block_issue_req(card, 0))
844 msb->has_request = 0;
845 }
846
847 /*** Initialization ***/
848
849 static int mspro_block_wait_for_ced(struct memstick_dev *card)
850 {
851 struct mspro_block_data *msb = memstick_get_drvdata(card);
852
853 card->next_request = h_mspro_block_req_init;
854 msb->mrq_handler = h_mspro_block_wait_for_ced;
855 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
856 memstick_new_req(card->host);
857 wait_for_completion(&card->mrq_complete);
858 return card->current_mrq.error;
859 }
860
861 static int mspro_block_set_interface(struct memstick_dev *card,
862 unsigned char sys_reg)
863 {
864 struct memstick_host *host = card->host;
865 struct mspro_block_data *msb = memstick_get_drvdata(card);
866 struct mspro_param_register param = {
867 .system = sys_reg,
868 .data_count = 0,
869 .data_address = 0,
870 .tpc_param = 0
871 };
872
873 card->next_request = h_mspro_block_req_init;
874 msb->mrq_handler = h_mspro_block_default;
875 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
876 sizeof(param));
877 memstick_new_req(host);
878 wait_for_completion(&card->mrq_complete);
879 return card->current_mrq.error;
880 }
881
882 static int mspro_block_switch_interface(struct memstick_dev *card)
883 {
884 struct memstick_host *host = card->host;
885 struct mspro_block_data *msb = memstick_get_drvdata(card);
886 int rc = 0;
887
888 try_again:
889 if (msb->caps & MEMSTICK_CAP_PAR4)
890 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
891 else
892 return 0;
893
894 if (rc) {
895 printk(KERN_WARNING
896 "%s: could not switch to 4-bit mode, error %d\n",
897 dev_name(&card->dev), rc);
898 return 0;
899 }
900
901 msb->system = MEMSTICK_SYS_PAR4;
902 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
903 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
904 dev_name(&card->dev));
905
906 if (msb->caps & MEMSTICK_CAP_PAR8) {
907 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
908
909 if (!rc) {
910 msb->system = MEMSTICK_SYS_PAR8;
911 host->set_param(host, MEMSTICK_INTERFACE,
912 MEMSTICK_PAR8);
913 printk(KERN_INFO
914 "%s: switching to 8-bit parallel mode\n",
915 dev_name(&card->dev));
916 } else
917 printk(KERN_WARNING
918 "%s: could not switch to 8-bit mode, error %d\n",
919 dev_name(&card->dev), rc);
920 }
921
922 card->next_request = h_mspro_block_req_init;
923 msb->mrq_handler = h_mspro_block_default;
924 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
925 memstick_new_req(card->host);
926 wait_for_completion(&card->mrq_complete);
927 rc = card->current_mrq.error;
928
929 if (rc) {
930 printk(KERN_WARNING
931 "%s: interface error, trying to fall back to serial\n",
932 dev_name(&card->dev));
933 msb->system = MEMSTICK_SYS_SERIAL;
934 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
935 msleep(10);
936 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
937 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
938
939 rc = memstick_set_rw_addr(card);
940 if (!rc)
941 rc = mspro_block_set_interface(card, msb->system);
942
943 if (!rc) {
944 msleep(150);
945 rc = mspro_block_wait_for_ced(card);
946 if (rc)
947 return rc;
948
949 if (msb->caps & MEMSTICK_CAP_PAR8) {
950 msb->caps &= ~MEMSTICK_CAP_PAR8;
951 goto try_again;
952 }
953 }
954 }
955 return rc;
956 }
957
958 /* Memory allocated for attributes by this function should be freed by
959 * mspro_block_data_clear, no matter if the initialization process succeded
960 * or failed.
961 */
962 static int mspro_block_read_attributes(struct memstick_dev *card)
963 {
964 struct mspro_block_data *msb = memstick_get_drvdata(card);
965 struct mspro_param_register param = {
966 .system = msb->system,
967 .data_count = cpu_to_be16(1),
968 .data_address = 0,
969 .tpc_param = 0
970 };
971 struct mspro_attribute *attr = NULL;
972 struct mspro_sys_attr *s_attr = NULL;
973 unsigned char *buffer = NULL;
974 int cnt, rc, attr_count;
975 unsigned int addr;
976 unsigned short page_count;
977
978 attr = kmalloc(msb->page_size, GFP_KERNEL);
979 if (!attr)
980 return -ENOMEM;
981
982 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
983 msb->seg_count = 1;
984 msb->current_seg = 0;
985 msb->current_page = 0;
986 msb->data_dir = READ;
987 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
988
989 card->next_request = h_mspro_block_req_init;
990 msb->mrq_handler = h_mspro_block_transfer_data;
991 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
992 sizeof(param));
993 memstick_new_req(card->host);
994 wait_for_completion(&card->mrq_complete);
995 if (card->current_mrq.error) {
996 rc = card->current_mrq.error;
997 goto out_free_attr;
998 }
999
1000 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
1001 printk(KERN_ERR "%s: unrecognized device signature %x\n",
1002 dev_name(&card->dev), be16_to_cpu(attr->signature));
1003 rc = -ENODEV;
1004 goto out_free_attr;
1005 }
1006
1007 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1008 printk(KERN_WARNING "%s: way too many attribute entries\n",
1009 dev_name(&card->dev));
1010 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1011 } else
1012 attr_count = attr->count;
1013
1014 msb->attr_group.attrs = kzalloc((attr_count + 1)
1015 * sizeof(struct attribute),
1016 GFP_KERNEL);
1017 if (!msb->attr_group.attrs) {
1018 rc = -ENOMEM;
1019 goto out_free_attr;
1020 }
1021 msb->attr_group.name = "media_attributes";
1022
1023 buffer = kmalloc(msb->page_size, GFP_KERNEL);
1024 if (!buffer) {
1025 rc = -ENOMEM;
1026 goto out_free_attr;
1027 }
1028 memcpy(buffer, (char *)attr, msb->page_size);
1029 page_count = 1;
1030
1031 for (cnt = 0; cnt < attr_count; ++cnt) {
1032 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1033 if (!s_attr) {
1034 rc = -ENOMEM;
1035 goto out_free_buffer;
1036 }
1037
1038 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1039 addr = be32_to_cpu(attr->entries[cnt].address);
1040 rc = be32_to_cpu(attr->entries[cnt].size);
1041 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1042 "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
1043 s_attr->id = attr->entries[cnt].id;
1044 if (mspro_block_attr_name(s_attr->id))
1045 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1046 mspro_block_attr_name(attr->entries[cnt].id));
1047 else
1048 snprintf(s_attr->name, sizeof(s_attr->name),
1049 "attr_x%02x", attr->entries[cnt].id);
1050
1051 s_attr->dev_attr.attr.name = s_attr->name;
1052 s_attr->dev_attr.attr.mode = S_IRUGO;
1053 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1054
1055 if (!rc)
1056 continue;
1057
1058 s_attr->size = rc;
1059 s_attr->data = kmalloc(rc, GFP_KERNEL);
1060 if (!s_attr->data) {
1061 rc = -ENOMEM;
1062 goto out_free_buffer;
1063 }
1064
1065 if (((addr / msb->page_size)
1066 == be32_to_cpu(param.data_address))
1067 && (((addr + rc - 1) / msb->page_size)
1068 == be32_to_cpu(param.data_address))) {
1069 memcpy(s_attr->data, buffer + addr % msb->page_size,
1070 rc);
1071 continue;
1072 }
1073
1074 if (page_count <= (rc / msb->page_size)) {
1075 kfree(buffer);
1076 page_count = (rc / msb->page_size) + 1;
1077 buffer = kmalloc(page_count * msb->page_size,
1078 GFP_KERNEL);
1079 if (!buffer) {
1080 rc = -ENOMEM;
1081 goto out_free_attr;
1082 }
1083 }
1084
1085 param.system = msb->system;
1086 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
1087 param.data_address = cpu_to_be32(addr / msb->page_size);
1088 param.tpc_param = 0;
1089
1090 sg_init_one(&msb->req_sg[0], buffer,
1091 be16_to_cpu(param.data_count) * msb->page_size);
1092 msb->seg_count = 1;
1093 msb->current_seg = 0;
1094 msb->current_page = 0;
1095 msb->data_dir = READ;
1096 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1097
1098 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
1099 be32_to_cpu(param.data_address),
1100 be16_to_cpu(param.data_count));
1101
1102 card->next_request = h_mspro_block_req_init;
1103 msb->mrq_handler = h_mspro_block_transfer_data;
1104 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
1105 (char *)&param, sizeof(param));
1106 memstick_new_req(card->host);
1107 wait_for_completion(&card->mrq_complete);
1108 if (card->current_mrq.error) {
1109 rc = card->current_mrq.error;
1110 goto out_free_buffer;
1111 }
1112
1113 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
1114 }
1115
1116 rc = 0;
1117 out_free_buffer:
1118 kfree(buffer);
1119 out_free_attr:
1120 kfree(attr);
1121 return rc;
1122 }
1123
1124 static int mspro_block_init_card(struct memstick_dev *card)
1125 {
1126 struct mspro_block_data *msb = memstick_get_drvdata(card);
1127 struct memstick_host *host = card->host;
1128 int rc = 0;
1129
1130 msb->system = MEMSTICK_SYS_SERIAL;
1131 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1132 card->reg_addr.r_length = sizeof(struct ms_status_register);
1133 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1134 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1135
1136 if (memstick_set_rw_addr(card))
1137 return -EIO;
1138
1139 msb->caps = host->caps;
1140
1141 msleep(150);
1142 rc = mspro_block_wait_for_ced(card);
1143 if (rc)
1144 return rc;
1145
1146 rc = mspro_block_switch_interface(card);
1147 if (rc)
1148 return rc;
1149
1150 dev_dbg(&card->dev, "card activated\n");
1151 if (msb->system != MEMSTICK_SYS_SERIAL)
1152 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1153
1154 card->next_request = h_mspro_block_req_init;
1155 msb->mrq_handler = h_mspro_block_get_ro;
1156 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1157 sizeof(struct ms_status_register));
1158 memstick_new_req(card->host);
1159 wait_for_completion(&card->mrq_complete);
1160 if (card->current_mrq.error)
1161 return card->current_mrq.error;
1162
1163 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1164
1165 msb->page_size = 512;
1166 rc = mspro_block_read_attributes(card);
1167 if (rc)
1168 return rc;
1169
1170 dev_dbg(&card->dev, "attributes loaded\n");
1171 return 0;
1172
1173 }
1174
1175 static int mspro_block_init_disk(struct memstick_dev *card)
1176 {
1177 struct mspro_block_data *msb = memstick_get_drvdata(card);
1178 struct memstick_host *host = card->host;
1179 struct mspro_devinfo *dev_info = NULL;
1180 struct mspro_sys_info *sys_info = NULL;
1181 struct mspro_sys_attr *s_attr = NULL;
1182 int rc, disk_id;
1183 u64 limit = BLK_BOUNCE_HIGH;
1184 unsigned long capacity;
1185
1186 if (host->dev.dma_mask && *(host->dev.dma_mask))
1187 limit = *(host->dev.dma_mask);
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 if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1208 return -ENOMEM;
1209
1210 mutex_lock(&mspro_block_disk_lock);
1211 rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1212 mutex_unlock(&mspro_block_disk_lock);
1213
1214 if (rc)
1215 return rc;
1216
1217 if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
1218 rc = -ENOSPC;
1219 goto out_release_id;
1220 }
1221
1222 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
1223 if (!msb->disk) {
1224 rc = -ENOMEM;
1225 goto out_release_id;
1226 }
1227
1228 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
1229 if (!msb->queue) {
1230 rc = -ENOMEM;
1231 goto out_put_disk;
1232 }
1233
1234 msb->queue->queuedata = card;
1235 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
1236
1237 blk_queue_bounce_limit(msb->queue, limit);
1238 blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1239 blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1240 blk_queue_max_segment_size(msb->queue,
1241 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1242
1243 msb->disk->major = major;
1244 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1245 msb->disk->fops = &ms_block_bdops;
1246 msb->usage_count = 1;
1247 msb->disk->private_data = msb;
1248 msb->disk->queue = msb->queue;
1249 msb->disk->driverfs_dev = &card->dev;
1250
1251 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1252
1253 blk_queue_logical_block_size(msb->queue, msb->page_size);
1254
1255 capacity = be16_to_cpu(sys_info->user_block_count);
1256 capacity *= be16_to_cpu(sys_info->block_size);
1257 capacity *= msb->page_size >> 9;
1258 set_capacity(msb->disk, capacity);
1259 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1260
1261 add_disk(msb->disk);
1262 msb->active = 1;
1263 return 0;
1264
1265 out_put_disk:
1266 put_disk(msb->disk);
1267 out_release_id:
1268 mutex_lock(&mspro_block_disk_lock);
1269 idr_remove(&mspro_block_disk_idr, disk_id);
1270 mutex_unlock(&mspro_block_disk_lock);
1271 return rc;
1272 }
1273
1274 static void mspro_block_data_clear(struct mspro_block_data *msb)
1275 {
1276 int cnt;
1277 struct mspro_sys_attr *s_attr;
1278
1279 if (msb->attr_group.attrs) {
1280 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1281 s_attr = mspro_from_sysfs_attr(msb->attr_group
1282 .attrs[cnt]);
1283 kfree(s_attr->data);
1284 kfree(s_attr);
1285 }
1286 kfree(msb->attr_group.attrs);
1287 }
1288
1289 msb->card = NULL;
1290 }
1291
1292 static int mspro_block_check_card(struct memstick_dev *card)
1293 {
1294 struct mspro_block_data *msb = memstick_get_drvdata(card);
1295
1296 return (msb->active == 1);
1297 }
1298
1299 static int mspro_block_probe(struct memstick_dev *card)
1300 {
1301 struct mspro_block_data *msb;
1302 int rc = 0;
1303
1304 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1305 if (!msb)
1306 return -ENOMEM;
1307 memstick_set_drvdata(card, msb);
1308 msb->card = card;
1309 spin_lock_init(&msb->q_lock);
1310
1311 rc = mspro_block_init_card(card);
1312
1313 if (rc)
1314 goto out_free;
1315
1316 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1317 if (rc)
1318 goto out_free;
1319
1320 rc = mspro_block_init_disk(card);
1321 if (!rc) {
1322 card->check = mspro_block_check_card;
1323 card->stop = mspro_block_stop;
1324 card->start = mspro_block_start;
1325 return 0;
1326 }
1327
1328 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1329 out_free:
1330 memstick_set_drvdata(card, NULL);
1331 mspro_block_data_clear(msb);
1332 kfree(msb);
1333 return rc;
1334 }
1335
1336 static void mspro_block_remove(struct memstick_dev *card)
1337 {
1338 struct mspro_block_data *msb = memstick_get_drvdata(card);
1339 unsigned long flags;
1340
1341 del_gendisk(msb->disk);
1342 dev_dbg(&card->dev, "mspro block remove\n");
1343 spin_lock_irqsave(&msb->q_lock, flags);
1344 msb->eject = 1;
1345 blk_start_queue(msb->queue);
1346 spin_unlock_irqrestore(&msb->q_lock, flags);
1347
1348 blk_cleanup_queue(msb->queue);
1349 msb->queue = NULL;
1350
1351 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1352
1353 mutex_lock(&mspro_block_disk_lock);
1354 mspro_block_data_clear(msb);
1355 mutex_unlock(&mspro_block_disk_lock);
1356
1357 mspro_block_disk_release(msb->disk);
1358 memstick_set_drvdata(card, NULL);
1359 }
1360
1361 #ifdef CONFIG_PM
1362
1363 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1364 {
1365 struct mspro_block_data *msb = memstick_get_drvdata(card);
1366 unsigned long flags;
1367
1368 spin_lock_irqsave(&msb->q_lock, flags);
1369 blk_stop_queue(msb->queue);
1370 msb->active = 0;
1371 spin_unlock_irqrestore(&msb->q_lock, flags);
1372
1373 return 0;
1374 }
1375
1376 static int mspro_block_resume(struct memstick_dev *card)
1377 {
1378 struct mspro_block_data *msb = memstick_get_drvdata(card);
1379 unsigned long flags;
1380 int rc = 0;
1381
1382 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1383
1384 struct mspro_block_data *new_msb;
1385 struct memstick_host *host = card->host;
1386 struct mspro_sys_attr *s_attr, *r_attr;
1387 unsigned char cnt;
1388
1389 mutex_lock(&host->lock);
1390 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1391 if (!new_msb) {
1392 rc = -ENOMEM;
1393 goto out_unlock;
1394 }
1395
1396 new_msb->card = card;
1397 memstick_set_drvdata(card, new_msb);
1398 if (mspro_block_init_card(card))
1399 goto out_free;
1400
1401 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1402 && msb->attr_group.attrs[cnt]; ++cnt) {
1403 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1404 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1405
1406 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1407 && r_attr->id == s_attr->id) {
1408 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1409 break;
1410
1411 msb->active = 1;
1412 break;
1413 }
1414 }
1415
1416 out_free:
1417 memstick_set_drvdata(card, msb);
1418 mspro_block_data_clear(new_msb);
1419 kfree(new_msb);
1420 out_unlock:
1421 mutex_unlock(&host->lock);
1422
1423 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1424
1425 spin_lock_irqsave(&msb->q_lock, flags);
1426 blk_start_queue(msb->queue);
1427 spin_unlock_irqrestore(&msb->q_lock, flags);
1428 return rc;
1429 }
1430
1431 #else
1432
1433 #define mspro_block_suspend NULL
1434 #define mspro_block_resume NULL
1435
1436 #endif /* CONFIG_PM */
1437
1438 static struct memstick_device_id mspro_block_id_tbl[] = {
1439 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1440 MEMSTICK_CLASS_DUO},
1441 {}
1442 };
1443
1444
1445 static struct memstick_driver mspro_block_driver = {
1446 .driver = {
1447 .name = DRIVER_NAME,
1448 .owner = THIS_MODULE
1449 },
1450 .id_table = mspro_block_id_tbl,
1451 .probe = mspro_block_probe,
1452 .remove = mspro_block_remove,
1453 .suspend = mspro_block_suspend,
1454 .resume = mspro_block_resume
1455 };
1456
1457 static int __init mspro_block_init(void)
1458 {
1459 int rc = -ENOMEM;
1460
1461 rc = register_blkdev(major, DRIVER_NAME);
1462 if (rc < 0) {
1463 printk(KERN_ERR DRIVER_NAME ": failed to register "
1464 "major %d, error %d\n", major, rc);
1465 return rc;
1466 }
1467 if (!major)
1468 major = rc;
1469
1470 rc = memstick_register_driver(&mspro_block_driver);
1471 if (rc)
1472 unregister_blkdev(major, DRIVER_NAME);
1473 return rc;
1474 }
1475
1476 static void __exit mspro_block_exit(void)
1477 {
1478 memstick_unregister_driver(&mspro_block_driver);
1479 unregister_blkdev(major, DRIVER_NAME);
1480 idr_destroy(&mspro_block_disk_idr);
1481 }
1482
1483 module_init(mspro_block_init);
1484 module_exit(mspro_block_exit);
1485
1486 MODULE_LICENSE("GPL");
1487 MODULE_AUTHOR("Alex Dubov");
1488 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1489 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
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