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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[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/mutex.h>
22 #include <linux/memstick.h>
23 #include <linux/module.h>
24
25 #define DRIVER_NAME "mspro_block"
26
27 static int major;
28 module_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
38 enum {
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
49 struct 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
57 struct mspro_attr_entry {
58 __be32 address;
59 __be32 size;
60 unsigned char id;
61 unsigned char reserved[3];
62 } __attribute__((packed));
63
64 struct 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
72 struct 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
105 struct 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
118 struct 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
129 struct 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
138 struct 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 spinlock_t q_lock;
146
147 unsigned short page_size;
148 unsigned short cylinders;
149 unsigned short heads;
150 unsigned short sectors_per_track;
151
152 unsigned char system;
153 unsigned char read_only:1,
154 eject:1,
155 has_request: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 /* Default request setup function for data access method preferred by
165 * this host instance.
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
178 static DEFINE_IDR(mspro_block_disk_idr);
179 static DEFINE_MUTEX(mspro_block_disk_lock);
180
181 static int mspro_block_complete_req(struct memstick_dev *card, int error);
182
183 /*** Block device ***/
184
185 static 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
207 static 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
229 static void mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
230 {
231 mspro_block_disk_release(disk);
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 /*** Transfer setup functions for different access methods. ***/
666
667 /** Setup data transfer request for SET_CMD TPC with arguments in card
668 * registers.
669 *
670 * @card Current media instance
671 * @offset Target data offset in bytes
672 * @length Required transfer length in bytes.
673 */
674 static 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 /* ISO C90 warning precludes direct initialization for now. */
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 &param, sizeof(param));
693 }
694
695 /*** Data transfer ***/
696
697 static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
698 {
699 struct mspro_block_data *msb = memstick_get_drvdata(card);
700 u64 t_off;
701 unsigned int count;
702
703 try_again:
704 while (chunk) {
705 msb->current_page = 0;
706 msb->current_seg = 0;
707 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
708 msb->block_req,
709 msb->req_sg);
710
711 if (!msb->seg_count) {
712 chunk = __blk_end_request_cur(msb->block_req, -ENOMEM);
713 continue;
714 }
715
716 t_off = blk_rq_pos(msb->block_req);
717 t_off <<= 9;
718 count = blk_rq_bytes(msb->block_req);
719
720 msb->setup_transfer(card, t_off, count);
721
722 msb->data_dir = rq_data_dir(msb->block_req);
723 msb->transfer_cmd = msb->data_dir == READ
724 ? MSPRO_CMD_READ_DATA
725 : MSPRO_CMD_WRITE_DATA;
726
727 memstick_new_req(card->host);
728 return 0;
729 }
730
731 dev_dbg(&card->dev, "blk_fetch\n");
732 msb->block_req = blk_fetch_request(msb->queue);
733 if (!msb->block_req) {
734 dev_dbg(&card->dev, "issue end\n");
735 return -EAGAIN;
736 }
737
738 dev_dbg(&card->dev, "trying again\n");
739 chunk = 1;
740 goto try_again;
741 }
742
743 static int mspro_block_complete_req(struct memstick_dev *card, int error)
744 {
745 struct mspro_block_data *msb = memstick_get_drvdata(card);
746 int chunk, cnt;
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->has_request ? 1 : 0,
752 error);
753
754 if (msb->has_request) {
755 /* Nothing to do - not really an error */
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_end_request(msb->block_req, error, t_len);
780
781 error = mspro_block_issue_req(card, chunk);
782
783 if (!error)
784 goto out;
785 else
786 msb->has_request = 0;
787 } else {
788 if (!error)
789 error = -EAGAIN;
790 }
791
792 card->next_request = h_mspro_block_default_bad;
793 complete_all(&card->mrq_complete);
794 out:
795 spin_unlock_irqrestore(&msb->q_lock, flags);
796 return error;
797 }
798
799 static void mspro_block_stop(struct memstick_dev *card)
800 {
801 struct mspro_block_data *msb = memstick_get_drvdata(card);
802 int rc = 0;
803 unsigned long flags;
804
805 while (1) {
806 spin_lock_irqsave(&msb->q_lock, flags);
807 if (!msb->has_request) {
808 blk_stop_queue(msb->queue);
809 rc = 1;
810 }
811 spin_unlock_irqrestore(&msb->q_lock, flags);
812
813 if (rc)
814 break;
815
816 wait_for_completion(&card->mrq_complete);
817 }
818 }
819
820 static void mspro_block_start(struct memstick_dev *card)
821 {
822 struct mspro_block_data *msb = memstick_get_drvdata(card);
823 unsigned long flags;
824
825 spin_lock_irqsave(&msb->q_lock, flags);
826 blk_start_queue(msb->queue);
827 spin_unlock_irqrestore(&msb->q_lock, flags);
828 }
829
830 static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
831 {
832 if (req->cmd_type != REQ_TYPE_FS &&
833 req->cmd_type != REQ_TYPE_BLOCK_PC) {
834 blk_dump_rq_flags(req, "MSPro unsupported request");
835 return BLKPREP_KILL;
836 }
837
838 req->cmd_flags |= REQ_DONTPREP;
839
840 return BLKPREP_OK;
841 }
842
843 static void mspro_block_submit_req(struct request_queue *q)
844 {
845 struct memstick_dev *card = q->queuedata;
846 struct mspro_block_data *msb = memstick_get_drvdata(card);
847 struct request *req = NULL;
848
849 if (msb->has_request)
850 return;
851
852 if (msb->eject) {
853 while ((req = blk_fetch_request(q)) != NULL)
854 __blk_end_request_all(req, -ENODEV);
855
856 return;
857 }
858
859 msb->has_request = 1;
860 if (mspro_block_issue_req(card, 0))
861 msb->has_request = 0;
862 }
863
864 /*** Initialization ***/
865
866 static int mspro_block_wait_for_ced(struct memstick_dev *card)
867 {
868 struct mspro_block_data *msb = memstick_get_drvdata(card);
869
870 card->next_request = h_mspro_block_req_init;
871 msb->mrq_handler = h_mspro_block_wait_for_ced;
872 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
873 memstick_new_req(card->host);
874 wait_for_completion(&card->mrq_complete);
875 return card->current_mrq.error;
876 }
877
878 static int mspro_block_set_interface(struct memstick_dev *card,
879 unsigned char sys_reg)
880 {
881 struct memstick_host *host = card->host;
882 struct mspro_block_data *msb = memstick_get_drvdata(card);
883 struct mspro_param_register param = {
884 .system = sys_reg,
885 .data_count = 0,
886 .data_address = 0,
887 .tpc_param = 0
888 };
889
890 card->next_request = h_mspro_block_req_init;
891 msb->mrq_handler = h_mspro_block_default;
892 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
893 sizeof(param));
894 memstick_new_req(host);
895 wait_for_completion(&card->mrq_complete);
896 return card->current_mrq.error;
897 }
898
899 static int mspro_block_switch_interface(struct memstick_dev *card)
900 {
901 struct memstick_host *host = card->host;
902 struct mspro_block_data *msb = memstick_get_drvdata(card);
903 int rc = 0;
904
905 try_again:
906 if (msb->caps & MEMSTICK_CAP_PAR4)
907 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
908 else
909 return 0;
910
911 if (rc) {
912 printk(KERN_WARNING
913 "%s: could not switch to 4-bit mode, error %d\n",
914 dev_name(&card->dev), rc);
915 return 0;
916 }
917
918 msb->system = MEMSTICK_SYS_PAR4;
919 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
920 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
921 dev_name(&card->dev));
922
923 if (msb->caps & MEMSTICK_CAP_PAR8) {
924 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
925
926 if (!rc) {
927 msb->system = MEMSTICK_SYS_PAR8;
928 host->set_param(host, MEMSTICK_INTERFACE,
929 MEMSTICK_PAR8);
930 printk(KERN_INFO
931 "%s: switching to 8-bit parallel mode\n",
932 dev_name(&card->dev));
933 } else
934 printk(KERN_WARNING
935 "%s: could not switch to 8-bit mode, error %d\n",
936 dev_name(&card->dev), rc);
937 }
938
939 card->next_request = h_mspro_block_req_init;
940 msb->mrq_handler = h_mspro_block_default;
941 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
942 memstick_new_req(card->host);
943 wait_for_completion(&card->mrq_complete);
944 rc = card->current_mrq.error;
945
946 if (rc) {
947 printk(KERN_WARNING
948 "%s: interface error, trying to fall back to serial\n",
949 dev_name(&card->dev));
950 msb->system = MEMSTICK_SYS_SERIAL;
951 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
952 msleep(10);
953 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
954 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
955
956 rc = memstick_set_rw_addr(card);
957 if (!rc)
958 rc = mspro_block_set_interface(card, msb->system);
959
960 if (!rc) {
961 msleep(150);
962 rc = mspro_block_wait_for_ced(card);
963 if (rc)
964 return rc;
965
966 if (msb->caps & MEMSTICK_CAP_PAR8) {
967 msb->caps &= ~MEMSTICK_CAP_PAR8;
968 goto try_again;
969 }
970 }
971 }
972 return rc;
973 }
974
975 /* Memory allocated for attributes by this function should be freed by
976 * mspro_block_data_clear, no matter if the initialization process succeeded
977 * or failed.
978 */
979 static int mspro_block_read_attributes(struct memstick_dev *card)
980 {
981 struct mspro_block_data *msb = memstick_get_drvdata(card);
982 struct mspro_attribute *attr = NULL;
983 struct mspro_sys_attr *s_attr = NULL;
984 unsigned char *buffer = NULL;
985 int cnt, rc, attr_count;
986 /* While normally physical device offsets, represented here by
987 * attr_offset and attr_len will be of large numeric types, we can be
988 * sure, that attributes are close enough to the beginning of the
989 * device, to save ourselves some trouble.
990 */
991 unsigned int addr, attr_offset = 0, attr_len = msb->page_size;
992
993 attr = kmalloc(msb->page_size, GFP_KERNEL);
994 if (!attr)
995 return -ENOMEM;
996
997 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
998 msb->seg_count = 1;
999 msb->current_seg = 0;
1000 msb->current_page = 0;
1001 msb->data_dir = READ;
1002 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1003
1004 msb->setup_transfer(card, attr_offset, attr_len);
1005
1006 memstick_new_req(card->host);
1007 wait_for_completion(&card->mrq_complete);
1008 if (card->current_mrq.error) {
1009 rc = card->current_mrq.error;
1010 goto out_free_attr;
1011 }
1012
1013 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
1014 printk(KERN_ERR "%s: unrecognized device signature %x\n",
1015 dev_name(&card->dev), be16_to_cpu(attr->signature));
1016 rc = -ENODEV;
1017 goto out_free_attr;
1018 }
1019
1020 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1021 printk(KERN_WARNING "%s: way too many attribute entries\n",
1022 dev_name(&card->dev));
1023 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1024 } else
1025 attr_count = attr->count;
1026
1027 msb->attr_group.attrs = kcalloc(attr_count + 1,
1028 sizeof(*msb->attr_group.attrs),
1029 GFP_KERNEL);
1030 if (!msb->attr_group.attrs) {
1031 rc = -ENOMEM;
1032 goto out_free_attr;
1033 }
1034 msb->attr_group.name = "media_attributes";
1035
1036 buffer = kmalloc(attr_len, GFP_KERNEL);
1037 if (!buffer) {
1038 rc = -ENOMEM;
1039 goto out_free_attr;
1040 }
1041 memcpy(buffer, (char *)attr, attr_len);
1042
1043 for (cnt = 0; cnt < attr_count; ++cnt) {
1044 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1045 if (!s_attr) {
1046 rc = -ENOMEM;
1047 goto out_free_buffer;
1048 }
1049
1050 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1051 addr = be32_to_cpu(attr->entries[cnt].address);
1052 s_attr->size = be32_to_cpu(attr->entries[cnt].size);
1053 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1054 "size %zx\n", cnt, attr->entries[cnt].id, addr,
1055 s_attr->size);
1056 s_attr->id = attr->entries[cnt].id;
1057 if (mspro_block_attr_name(s_attr->id))
1058 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1059 mspro_block_attr_name(attr->entries[cnt].id));
1060 else
1061 snprintf(s_attr->name, sizeof(s_attr->name),
1062 "attr_x%02x", attr->entries[cnt].id);
1063
1064 sysfs_attr_init(&s_attr->dev_attr.attr);
1065 s_attr->dev_attr.attr.name = s_attr->name;
1066 s_attr->dev_attr.attr.mode = S_IRUGO;
1067 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1068
1069 if (!s_attr->size)
1070 continue;
1071
1072 s_attr->data = kmalloc(s_attr->size, GFP_KERNEL);
1073 if (!s_attr->data) {
1074 rc = -ENOMEM;
1075 goto out_free_buffer;
1076 }
1077
1078 if (((addr / msb->page_size) == (attr_offset / msb->page_size))
1079 && (((addr + s_attr->size - 1) / msb->page_size)
1080 == (attr_offset / msb->page_size))) {
1081 memcpy(s_attr->data, buffer + addr % msb->page_size,
1082 s_attr->size);
1083 continue;
1084 }
1085
1086 attr_offset = (addr / msb->page_size) * msb->page_size;
1087
1088 if ((attr_offset + attr_len) < (addr + s_attr->size)) {
1089 kfree(buffer);
1090 attr_len = (((addr + s_attr->size) / msb->page_size)
1091 + 1 ) * msb->page_size - attr_offset;
1092 buffer = kmalloc(attr_len, GFP_KERNEL);
1093 if (!buffer) {
1094 rc = -ENOMEM;
1095 goto out_free_attr;
1096 }
1097 }
1098
1099 sg_init_one(&msb->req_sg[0], buffer, attr_len);
1100 msb->seg_count = 1;
1101 msb->current_seg = 0;
1102 msb->current_page = 0;
1103 msb->data_dir = READ;
1104 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1105
1106 dev_dbg(&card->dev, "reading attribute range %x, %x\n",
1107 attr_offset, attr_len);
1108
1109 msb->setup_transfer(card, attr_offset, attr_len);
1110 memstick_new_req(card->host);
1111 wait_for_completion(&card->mrq_complete);
1112 if (card->current_mrq.error) {
1113 rc = card->current_mrq.error;
1114 goto out_free_buffer;
1115 }
1116
1117 memcpy(s_attr->data, buffer + addr % msb->page_size,
1118 s_attr->size);
1119 }
1120
1121 rc = 0;
1122 out_free_buffer:
1123 kfree(buffer);
1124 out_free_attr:
1125 kfree(attr);
1126 return rc;
1127 }
1128
1129 static int mspro_block_init_card(struct memstick_dev *card)
1130 {
1131 struct mspro_block_data *msb = memstick_get_drvdata(card);
1132 struct memstick_host *host = card->host;
1133 int rc = 0;
1134
1135 msb->system = MEMSTICK_SYS_SERIAL;
1136 msb->setup_transfer = h_mspro_block_setup_cmd;
1137
1138 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1139 card->reg_addr.r_length = sizeof(struct ms_status_register);
1140 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1141 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1142
1143 if (memstick_set_rw_addr(card))
1144 return -EIO;
1145
1146 msb->caps = host->caps;
1147
1148 msleep(150);
1149 rc = mspro_block_wait_for_ced(card);
1150 if (rc)
1151 return rc;
1152
1153 rc = mspro_block_switch_interface(card);
1154 if (rc)
1155 return rc;
1156
1157 dev_dbg(&card->dev, "card activated\n");
1158 if (msb->system != MEMSTICK_SYS_SERIAL)
1159 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1160
1161 card->next_request = h_mspro_block_req_init;
1162 msb->mrq_handler = h_mspro_block_get_ro;
1163 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1164 sizeof(struct ms_status_register));
1165 memstick_new_req(card->host);
1166 wait_for_completion(&card->mrq_complete);
1167 if (card->current_mrq.error)
1168 return card->current_mrq.error;
1169
1170 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1171
1172 msb->page_size = 512;
1173 rc = mspro_block_read_attributes(card);
1174 if (rc)
1175 return rc;
1176
1177 dev_dbg(&card->dev, "attributes loaded\n");
1178 return 0;
1179
1180 }
1181
1182 static int mspro_block_init_disk(struct memstick_dev *card)
1183 {
1184 struct mspro_block_data *msb = memstick_get_drvdata(card);
1185 struct memstick_host *host = card->host;
1186 struct mspro_devinfo *dev_info = NULL;
1187 struct mspro_sys_info *sys_info = NULL;
1188 struct mspro_sys_attr *s_attr = NULL;
1189 int rc, disk_id;
1190 u64 limit = BLK_BOUNCE_HIGH;
1191 unsigned long capacity;
1192
1193 if (host->dev.dma_mask && *(host->dev.dma_mask))
1194 limit = *(host->dev.dma_mask);
1195
1196 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1197 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1198
1199 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1200 dev_info = s_attr->data;
1201 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1202 sys_info = s_attr->data;
1203 }
1204
1205 if (!dev_info || !sys_info)
1206 return -ENODEV;
1207
1208 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1209 msb->heads = be16_to_cpu(dev_info->heads);
1210 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1211
1212 msb->page_size = be16_to_cpu(sys_info->unit_size);
1213
1214 mutex_lock(&mspro_block_disk_lock);
1215 disk_id = idr_alloc(&mspro_block_disk_idr, card, 0, 256, GFP_KERNEL);
1216 mutex_unlock(&mspro_block_disk_lock);
1217 if (disk_id < 0)
1218 return disk_id;
1219
1220 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
1221 if (!msb->disk) {
1222 rc = -ENOMEM;
1223 goto out_release_id;
1224 }
1225
1226 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
1227 if (!msb->queue) {
1228 rc = -ENOMEM;
1229 goto out_put_disk;
1230 }
1231
1232 msb->queue->queuedata = card;
1233 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
1234
1235 blk_queue_bounce_limit(msb->queue, limit);
1236 blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1237 blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1238 blk_queue_max_segment_size(msb->queue,
1239 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1240
1241 msb->disk->major = major;
1242 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1243 msb->disk->fops = &ms_block_bdops;
1244 msb->usage_count = 1;
1245 msb->disk->private_data = msb;
1246 msb->disk->queue = msb->queue;
1247 msb->disk->driverfs_dev = &card->dev;
1248
1249 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1250
1251 blk_queue_logical_block_size(msb->queue, msb->page_size);
1252
1253 capacity = be16_to_cpu(sys_info->user_block_count);
1254 capacity *= be16_to_cpu(sys_info->block_size);
1255 capacity *= msb->page_size >> 9;
1256 set_capacity(msb->disk, capacity);
1257 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1258
1259 add_disk(msb->disk);
1260 msb->active = 1;
1261 return 0;
1262
1263 out_put_disk:
1264 put_disk(msb->disk);
1265 out_release_id:
1266 mutex_lock(&mspro_block_disk_lock);
1267 idr_remove(&mspro_block_disk_idr, disk_id);
1268 mutex_unlock(&mspro_block_disk_lock);
1269 return rc;
1270 }
1271
1272 static void mspro_block_data_clear(struct mspro_block_data *msb)
1273 {
1274 int cnt;
1275 struct mspro_sys_attr *s_attr;
1276
1277 if (msb->attr_group.attrs) {
1278 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1279 s_attr = mspro_from_sysfs_attr(msb->attr_group
1280 .attrs[cnt]);
1281 kfree(s_attr->data);
1282 kfree(s_attr);
1283 }
1284 kfree(msb->attr_group.attrs);
1285 }
1286
1287 msb->card = NULL;
1288 }
1289
1290 static int mspro_block_check_card(struct memstick_dev *card)
1291 {
1292 struct mspro_block_data *msb = memstick_get_drvdata(card);
1293
1294 return (msb->active == 1);
1295 }
1296
1297 static int mspro_block_probe(struct memstick_dev *card)
1298 {
1299 struct mspro_block_data *msb;
1300 int rc = 0;
1301
1302 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1303 if (!msb)
1304 return -ENOMEM;
1305 memstick_set_drvdata(card, msb);
1306 msb->card = card;
1307 spin_lock_init(&msb->q_lock);
1308
1309 rc = mspro_block_init_card(card);
1310
1311 if (rc)
1312 goto out_free;
1313
1314 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1315 if (rc)
1316 goto out_free;
1317
1318 rc = mspro_block_init_disk(card);
1319 if (!rc) {
1320 card->check = mspro_block_check_card;
1321 card->stop = mspro_block_stop;
1322 card->start = mspro_block_start;
1323 return 0;
1324 }
1325
1326 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1327 out_free:
1328 memstick_set_drvdata(card, NULL);
1329 mspro_block_data_clear(msb);
1330 kfree(msb);
1331 return rc;
1332 }
1333
1334 static void mspro_block_remove(struct memstick_dev *card)
1335 {
1336 struct mspro_block_data *msb = memstick_get_drvdata(card);
1337 unsigned long flags;
1338
1339 spin_lock_irqsave(&msb->q_lock, flags);
1340 msb->eject = 1;
1341 blk_start_queue(msb->queue);
1342 spin_unlock_irqrestore(&msb->q_lock, flags);
1343
1344 del_gendisk(msb->disk);
1345 dev_dbg(&card->dev, "mspro block remove\n");
1346
1347 blk_cleanup_queue(msb->queue);
1348 msb->queue = NULL;
1349
1350 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1351
1352 mutex_lock(&mspro_block_disk_lock);
1353 mspro_block_data_clear(msb);
1354 mutex_unlock(&mspro_block_disk_lock);
1355
1356 mspro_block_disk_release(msb->disk);
1357 memstick_set_drvdata(card, NULL);
1358 }
1359
1360 #ifdef CONFIG_PM
1361
1362 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1363 {
1364 struct mspro_block_data *msb = memstick_get_drvdata(card);
1365 unsigned long flags;
1366
1367 spin_lock_irqsave(&msb->q_lock, flags);
1368 blk_stop_queue(msb->queue);
1369 msb->active = 0;
1370 spin_unlock_irqrestore(&msb->q_lock, flags);
1371
1372 return 0;
1373 }
1374
1375 static int mspro_block_resume(struct memstick_dev *card)
1376 {
1377 struct mspro_block_data *msb = memstick_get_drvdata(card);
1378 unsigned long flags;
1379 int rc = 0;
1380
1381 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1382
1383 struct mspro_block_data *new_msb;
1384 struct memstick_host *host = card->host;
1385 struct mspro_sys_attr *s_attr, *r_attr;
1386 unsigned char cnt;
1387
1388 mutex_lock(&host->lock);
1389 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1390 if (!new_msb) {
1391 rc = -ENOMEM;
1392 goto out_unlock;
1393 }
1394
1395 new_msb->card = card;
1396 memstick_set_drvdata(card, new_msb);
1397 if (mspro_block_init_card(card))
1398 goto out_free;
1399
1400 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1401 && msb->attr_group.attrs[cnt]; ++cnt) {
1402 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1403 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1404
1405 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1406 && r_attr->id == s_attr->id) {
1407 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1408 break;
1409
1410 msb->active = 1;
1411 break;
1412 }
1413 }
1414
1415 out_free:
1416 memstick_set_drvdata(card, msb);
1417 mspro_block_data_clear(new_msb);
1418 kfree(new_msb);
1419 out_unlock:
1420 mutex_unlock(&host->lock);
1421
1422 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1423
1424 spin_lock_irqsave(&msb->q_lock, flags);
1425 blk_start_queue(msb->queue);
1426 spin_unlock_irqrestore(&msb->q_lock, flags);
1427 return rc;
1428 }
1429
1430 #else
1431
1432 #define mspro_block_suspend NULL
1433 #define mspro_block_resume NULL
1434
1435 #endif /* CONFIG_PM */
1436
1437 static struct memstick_device_id mspro_block_id_tbl[] = {
1438 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1439 MEMSTICK_CLASS_DUO},
1440 {}
1441 };
1442
1443
1444 static struct memstick_driver mspro_block_driver = {
1445 .driver = {
1446 .name = DRIVER_NAME,
1447 .owner = THIS_MODULE
1448 },
1449 .id_table = mspro_block_id_tbl,
1450 .probe = mspro_block_probe,
1451 .remove = mspro_block_remove,
1452 .suspend = mspro_block_suspend,
1453 .resume = mspro_block_resume
1454 };
1455
1456 static int __init mspro_block_init(void)
1457 {
1458 int rc = -ENOMEM;
1459
1460 rc = register_blkdev(major, DRIVER_NAME);
1461 if (rc < 0) {
1462 printk(KERN_ERR DRIVER_NAME ": failed to register "
1463 "major %d, error %d\n", major, rc);
1464 return rc;
1465 }
1466 if (!major)
1467 major = rc;
1468
1469 rc = memstick_register_driver(&mspro_block_driver);
1470 if (rc)
1471 unregister_blkdev(major, DRIVER_NAME);
1472 return rc;
1473 }
1474
1475 static void __exit mspro_block_exit(void)
1476 {
1477 memstick_unregister_driver(&mspro_block_driver);
1478 unregister_blkdev(major, DRIVER_NAME);
1479 idr_destroy(&mspro_block_disk_idr);
1480 }
1481
1482 module_init(mspro_block_init);
1483 module_exit(mspro_block_exit);
1484
1485 MODULE_LICENSE("GPL");
1486 MODULE_AUTHOR("Alex Dubov");
1487 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1488 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
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