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dmaengine: replace dma_async_client_register with dmaengine_get
[linux-2.6/btrfs-unstable.git] / drivers / memstick / core / mspro_block.c
blob7911151e56a34f2873d21aa45661d5a80252cd35
1 /*
2 * Sony MemoryStick Pro storage support
3 *
4 * Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * Special thanks to Carlos Corbacho for providing various MemoryStick cards
11 * that made this driver possible.
12 *
13 */
14
15 #include <linux/blkdev.h>
16 #include <linux/idr.h>
17 #include <linux/hdreg.h>
18 #include <linux/kthread.h>
19 #include <linux/delay.h>
20 #include <linux/memstick.h>
21
22 #define DRIVER_NAME "mspro_block"
23
24 static int major;
25 module_param(major, int, 0644);
26
27 #define MSPRO_BLOCK_MAX_SEGS 32
28 #define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
29
30 #define MSPRO_BLOCK_SIGNATURE 0xa5c3
31 #define MSPRO_BLOCK_MAX_ATTRIBUTES 41
32
33 #define MSPRO_BLOCK_PART_SHIFT 3
34
35 enum {
36 MSPRO_BLOCK_ID_SYSINFO = 0x10,
37 MSPRO_BLOCK_ID_MODELNAME = 0x15,
38 MSPRO_BLOCK_ID_MBR = 0x20,
39 MSPRO_BLOCK_ID_PBR16 = 0x21,
40 MSPRO_BLOCK_ID_PBR32 = 0x22,
41 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
42 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
43 MSPRO_BLOCK_ID_DEVINFO = 0x30
44 };
45
46 struct mspro_sys_attr {
47 size_t size;
48 void *data;
49 unsigned char id;
50 char name[32];
51 struct device_attribute dev_attr;
52 };
53
54 struct mspro_attr_entry {
55 unsigned int address;
56 unsigned int size;
57 unsigned char id;
58 unsigned char reserved[3];
59 } __attribute__((packed));
60
61 struct mspro_attribute {
62 unsigned short signature;
63 unsigned short version;
64 unsigned char count;
65 unsigned char reserved[11];
66 struct mspro_attr_entry entries[];
67 } __attribute__((packed));
68
69 struct mspro_sys_info {
70 unsigned char class;
71 unsigned char reserved0;
72 unsigned short block_size;
73 unsigned short block_count;
74 unsigned short user_block_count;
75 unsigned short page_size;
76 unsigned char reserved1[2];
77 unsigned char assembly_date[8];
78 unsigned int serial_number;
79 unsigned char assembly_maker_code;
80 unsigned char assembly_model_code[3];
81 unsigned short memory_maker_code;
82 unsigned short memory_model_code;
83 unsigned char reserved2[4];
84 unsigned char vcc;
85 unsigned char vpp;
86 unsigned short controller_number;
87 unsigned short controller_function;
88 unsigned short start_sector;
89 unsigned short unit_size;
90 unsigned char ms_sub_class;
91 unsigned char reserved3[4];
92 unsigned char interface_type;
93 unsigned short controller_code;
94 unsigned char format_type;
95 unsigned char reserved4;
96 unsigned char device_type;
97 unsigned char reserved5[7];
98 unsigned char mspro_id[16];
99 unsigned char reserved6[16];
100 } __attribute__((packed));
101
102 struct mspro_mbr {
103 unsigned char boot_partition;
104 unsigned char start_head;
105 unsigned char start_sector;
106 unsigned char start_cylinder;
107 unsigned char partition_type;
108 unsigned char end_head;
109 unsigned char end_sector;
110 unsigned char end_cylinder;
111 unsigned int start_sectors;
112 unsigned int sectors_per_partition;
113 } __attribute__((packed));
114
115 struct mspro_specfile {
116 char name[8];
117 char ext[3];
118 unsigned char attr;
119 unsigned char reserved[10];
120 unsigned short time;
121 unsigned short date;
122 unsigned short cluster;
123 unsigned int size;
124 } __attribute__((packed));
125
126 struct mspro_devinfo {
127 unsigned short cylinders;
128 unsigned short heads;
129 unsigned short bytes_per_track;
130 unsigned short bytes_per_sector;
131 unsigned short sectors_per_track;
132 unsigned char reserved[6];
133 } __attribute__((packed));
134
135 struct mspro_block_data {
136 struct memstick_dev *card;
137 unsigned int usage_count;
138 unsigned int caps;
139 struct gendisk *disk;
140 struct request_queue *queue;
141 struct request *block_req;
142 spinlock_t q_lock;
143
144 unsigned short page_size;
145 unsigned short cylinders;
146 unsigned short heads;
147 unsigned short sectors_per_track;
148
149 unsigned char system;
150 unsigned char read_only:1,
151 eject:1,
152 has_request:1,
153 data_dir:1,
154 active:1;
155 unsigned char transfer_cmd;
156
157 int (*mrq_handler)(struct memstick_dev *card,
158 struct memstick_request **mrq);
159
160 struct attribute_group attr_group;
161
162 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
163 unsigned int seg_count;
164 unsigned int current_seg;
165 unsigned int current_page;
166 };
167
168 static DEFINE_IDR(mspro_block_disk_idr);
169 static DEFINE_MUTEX(mspro_block_disk_lock);
170
171 static int mspro_block_complete_req(struct memstick_dev *card, int error);
172
173 /*** Block device ***/
174
175 static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
176 {
177 struct gendisk *disk = bdev->bd_disk;
178 struct mspro_block_data *msb = disk->private_data;
179 int rc = -ENXIO;
180
181 mutex_lock(&mspro_block_disk_lock);
182
183 if (msb && msb->card) {
184 msb->usage_count++;
185 if ((mode & FMODE_WRITE) && msb->read_only)
186 rc = -EROFS;
187 else
188 rc = 0;
189 }
190
191 mutex_unlock(&mspro_block_disk_lock);
192
193 return rc;
194 }
195
196
197 static int mspro_block_disk_release(struct gendisk *disk)
198 {
199 struct mspro_block_data *msb = disk->private_data;
200 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
201
202 mutex_lock(&mspro_block_disk_lock);
203
204 if (msb) {
205 if (msb->usage_count)
206 msb->usage_count--;
207
208 if (!msb->usage_count) {
209 kfree(msb);
210 disk->private_data = NULL;
211 idr_remove(&mspro_block_disk_idr, disk_id);
212 put_disk(disk);
213 }
214 }
215
216 mutex_unlock(&mspro_block_disk_lock);
217
218 return 0;
219 }
220
221 static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
222 {
223 return mspro_block_disk_release(disk);
224 }
225
226 static int mspro_block_bd_getgeo(struct block_device *bdev,
227 struct hd_geometry *geo)
228 {
229 struct mspro_block_data *msb = bdev->bd_disk->private_data;
230
231 geo->heads = msb->heads;
232 geo->sectors = msb->sectors_per_track;
233 geo->cylinders = msb->cylinders;
234
235 return 0;
236 }
237
238 static struct block_device_operations ms_block_bdops = {
239 .open = mspro_block_bd_open,
240 .release = mspro_block_bd_release,
241 .getgeo = mspro_block_bd_getgeo,
242 .owner = THIS_MODULE
243 };
244
245 /*** Information ***/
246
247 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
248 {
249 struct device_attribute *dev_attr
250 = container_of(attr, struct device_attribute, attr);
251 return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
252 }
253
254 static const char *mspro_block_attr_name(unsigned char tag)
255 {
256 switch (tag) {
257 case MSPRO_BLOCK_ID_SYSINFO:
258 return "attr_sysinfo";
259 case MSPRO_BLOCK_ID_MODELNAME:
260 return "attr_modelname";
261 case MSPRO_BLOCK_ID_MBR:
262 return "attr_mbr";
263 case MSPRO_BLOCK_ID_PBR16:
264 return "attr_pbr16";
265 case MSPRO_BLOCK_ID_PBR32:
266 return "attr_pbr32";
267 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
268 return "attr_specfilevalues1";
269 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
270 return "attr_specfilevalues2";
271 case MSPRO_BLOCK_ID_DEVINFO:
272 return "attr_devinfo";
273 default:
274 return NULL;
275 };
276 }
277
278 typedef ssize_t (*sysfs_show_t)(struct device *dev,
279 struct device_attribute *attr,
280 char *buffer);
281
282 static ssize_t mspro_block_attr_show_default(struct device *dev,
283 struct device_attribute *attr,
284 char *buffer)
285 {
286 struct mspro_sys_attr *s_attr = container_of(attr,
287 struct mspro_sys_attr,
288 dev_attr);
289
290 ssize_t cnt, rc = 0;
291
292 for (cnt = 0; cnt < s_attr->size; cnt++) {
293 if (cnt && !(cnt % 16)) {
294 if (PAGE_SIZE - rc)
295 buffer[rc++] = '\n';
296 }
297
298 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
299 ((unsigned char *)s_attr->data)[cnt]);
300 }
301 return rc;
302 }
303
304 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
305 struct device_attribute *attr,
306 char *buffer)
307 {
308 struct mspro_sys_attr *x_attr = container_of(attr,
309 struct mspro_sys_attr,
310 dev_attr);
311 struct mspro_sys_info *x_sys = x_attr->data;
312 ssize_t rc = 0;
313 int date_tz = 0, date_tz_f = 0;
314
315 if (x_sys->assembly_date[0] > 0x80U) {
316 date_tz = (~x_sys->assembly_date[0]) + 1;
317 date_tz_f = date_tz & 3;
318 date_tz >>= 2;
319 date_tz = -date_tz;
320 date_tz_f *= 15;
321 } else if (x_sys->assembly_date[0] < 0x80U) {
322 date_tz = x_sys->assembly_date[0];
323 date_tz_f = date_tz & 3;
324 date_tz >>= 2;
325 date_tz_f *= 15;
326 }
327
328 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
329 x_sys->class);
330 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
331 be16_to_cpu(x_sys->block_size));
332 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
333 be16_to_cpu(x_sys->block_count));
334 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
335 be16_to_cpu(x_sys->user_block_count));
336 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
337 be16_to_cpu(x_sys->page_size));
338 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
339 "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
340 date_tz, date_tz_f,
341 be16_to_cpu(*(unsigned short *)
342 &x_sys->assembly_date[1]),
343 x_sys->assembly_date[3], x_sys->assembly_date[4],
344 x_sys->assembly_date[5], x_sys->assembly_date[6],
345 x_sys->assembly_date[7]);
346 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
347 be32_to_cpu(x_sys->serial_number));
348 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
349 "assembly maker code: %x\n",
350 x_sys->assembly_maker_code);
351 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
352 "%02x%02x%02x\n", x_sys->assembly_model_code[0],
353 x_sys->assembly_model_code[1],
354 x_sys->assembly_model_code[2]);
355 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
356 be16_to_cpu(x_sys->memory_maker_code));
357 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
358 be16_to_cpu(x_sys->memory_model_code));
359 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
360 x_sys->vcc);
361 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
362 x_sys->vpp);
363 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
364 be16_to_cpu(x_sys->controller_number));
365 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
366 "controller function: %x\n",
367 be16_to_cpu(x_sys->controller_function));
368 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
369 be16_to_cpu(x_sys->start_sector));
370 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
371 be16_to_cpu(x_sys->unit_size));
372 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
373 x_sys->ms_sub_class);
374 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
375 x_sys->interface_type);
376 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
377 be16_to_cpu(x_sys->controller_code));
378 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
379 x_sys->format_type);
380 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
381 x_sys->device_type);
382 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
383 x_sys->mspro_id);
384 return rc;
385 }
386
387 static ssize_t mspro_block_attr_show_modelname(struct device *dev,
388 struct device_attribute *attr,
389 char *buffer)
390 {
391 struct mspro_sys_attr *s_attr = container_of(attr,
392 struct mspro_sys_attr,
393 dev_attr);
394
395 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
396 }
397
398 static ssize_t mspro_block_attr_show_mbr(struct device *dev,
399 struct device_attribute *attr,
400 char *buffer)
401 {
402 struct mspro_sys_attr *x_attr = container_of(attr,
403 struct mspro_sys_attr,
404 dev_attr);
405 struct mspro_mbr *x_mbr = x_attr->data;
406 ssize_t rc = 0;
407
408 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
409 x_mbr->boot_partition);
410 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
411 x_mbr->start_head);
412 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
413 x_mbr->start_sector);
414 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
415 x_mbr->start_cylinder);
416 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
417 x_mbr->partition_type);
418 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
419 x_mbr->end_head);
420 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
421 x_mbr->end_sector);
422 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
423 x_mbr->end_cylinder);
424 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
425 x_mbr->start_sectors);
426 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
427 "sectors per partition: %x\n",
428 x_mbr->sectors_per_partition);
429 return rc;
430 }
431
432 static ssize_t mspro_block_attr_show_specfile(struct device *dev,
433 struct device_attribute *attr,
434 char *buffer)
435 {
436 struct mspro_sys_attr *x_attr = container_of(attr,
437 struct mspro_sys_attr,
438 dev_attr);
439 struct mspro_specfile *x_spfile = x_attr->data;
440 char name[9], ext[4];
441 ssize_t rc = 0;
442
443 memcpy(name, x_spfile->name, 8);
444 name[8] = 0;
445 memcpy(ext, x_spfile->ext, 3);
446 ext[3] = 0;
447
448 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
449 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
450 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
451 x_spfile->attr);
452 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
453 x_spfile->time >> 11,
454 (x_spfile->time >> 5) & 0x3f,
455 (x_spfile->time & 0x1f) * 2);
456 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
457 (x_spfile->date >> 9) + 1980,
458 (x_spfile->date >> 5) & 0xf,
459 x_spfile->date & 0x1f);
460 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
461 x_spfile->cluster);
462 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
463 x_spfile->size);
464 return rc;
465 }
466
467 static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
468 struct device_attribute *attr,
469 char *buffer)
470 {
471 struct mspro_sys_attr *x_attr = container_of(attr,
472 struct mspro_sys_attr,
473 dev_attr);
474 struct mspro_devinfo *x_devinfo = x_attr->data;
475 ssize_t rc = 0;
476
477 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
478 be16_to_cpu(x_devinfo->cylinders));
479 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
480 be16_to_cpu(x_devinfo->heads));
481 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
482 be16_to_cpu(x_devinfo->bytes_per_track));
483 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
484 be16_to_cpu(x_devinfo->bytes_per_sector));
485 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
486 be16_to_cpu(x_devinfo->sectors_per_track));
487 return rc;
488 }
489
490 static sysfs_show_t mspro_block_attr_show(unsigned char tag)
491 {
492 switch (tag) {
493 case MSPRO_BLOCK_ID_SYSINFO:
494 return mspro_block_attr_show_sysinfo;
495 case MSPRO_BLOCK_ID_MODELNAME:
496 return mspro_block_attr_show_modelname;
497 case MSPRO_BLOCK_ID_MBR:
498 return mspro_block_attr_show_mbr;
499 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
500 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
501 return mspro_block_attr_show_specfile;
502 case MSPRO_BLOCK_ID_DEVINFO:
503 return mspro_block_attr_show_devinfo;
504 default:
505 return mspro_block_attr_show_default;
506 }
507 }
508
509 /*** Protocol handlers ***/
510
511 /*
512 * Functions prefixed with "h_" are protocol callbacks. They can be called from
513 * interrupt context. Return value of 0 means that request processing is still
514 * ongoing, while special error value of -EAGAIN means that current request is
515 * finished (and request processor should come back some time later).
516 */
517
518 static int h_mspro_block_req_init(struct memstick_dev *card,
519 struct memstick_request **mrq)
520 {
521 struct mspro_block_data *msb = memstick_get_drvdata(card);
522
523 *mrq = &card->current_mrq;
524 card->next_request = msb->mrq_handler;
525 return 0;
526 }
527
528 static int h_mspro_block_default(struct memstick_dev *card,
529 struct memstick_request **mrq)
530 {
531 return mspro_block_complete_req(card, (*mrq)->error);
532 }
533
534 static int h_mspro_block_default_bad(struct memstick_dev *card,
535 struct memstick_request **mrq)
536 {
537 return -ENXIO;
538 }
539
540 static int h_mspro_block_get_ro(struct memstick_dev *card,
541 struct memstick_request **mrq)
542 {
543 struct mspro_block_data *msb = memstick_get_drvdata(card);
544
545 if (!(*mrq)->error) {
546 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
547 & MEMSTICK_STATUS0_WP)
548 msb->read_only = 1;
549 else
550 msb->read_only = 0;
551 }
552
553 return mspro_block_complete_req(card, (*mrq)->error);
554 }
555
556 static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
557 struct memstick_request **mrq)
558 {
559 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
560
561 if (!(*mrq)->error) {
562 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
563 (*mrq)->error = -EFAULT;
564 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
565 return 0;
566 }
567
568 return mspro_block_complete_req(card, (*mrq)->error);
569 }
570
571 static int h_mspro_block_transfer_data(struct memstick_dev *card,
572 struct memstick_request **mrq)
573 {
574 struct mspro_block_data *msb = memstick_get_drvdata(card);
575 unsigned char t_val = 0;
576 struct scatterlist t_sg = { 0 };
577 size_t t_offset;
578
579 if ((*mrq)->error)
580 return mspro_block_complete_req(card, (*mrq)->error);
581
582 switch ((*mrq)->tpc) {
583 case MS_TPC_WRITE_REG:
584 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
585 (*mrq)->need_card_int = 1;
586 return 0;
587 case MS_TPC_SET_CMD:
588 t_val = (*mrq)->int_reg;
589 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
590 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
591 goto has_int_reg;
592 return 0;
593 case MS_TPC_GET_INT:
594 t_val = (*mrq)->data[0];
595 has_int_reg:
596 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
597 t_val = MSPRO_CMD_STOP;
598 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
599 card->next_request = h_mspro_block_default;
600 return 0;
601 }
602
603 if (msb->current_page
604 == (msb->req_sg[msb->current_seg].length
605 / msb->page_size)) {
606 msb->current_page = 0;
607 msb->current_seg++;
608
609 if (msb->current_seg == msb->seg_count) {
610 if (t_val & MEMSTICK_INT_CED) {
611 return mspro_block_complete_req(card,
612 0);
613 } else {
614 card->next_request
615 = h_mspro_block_wait_for_ced;
616 memstick_init_req(*mrq, MS_TPC_GET_INT,
617 NULL, 1);
618 return 0;
619 }
620 }
621 }
622
623 if (!(t_val & MEMSTICK_INT_BREQ)) {
624 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
625 return 0;
626 }
627
628 t_offset = msb->req_sg[msb->current_seg].offset;
629 t_offset += msb->current_page * msb->page_size;
630
631 sg_set_page(&t_sg,
632 nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
633 t_offset >> PAGE_SHIFT),
634 msb->page_size, offset_in_page(t_offset));
635
636 memstick_init_req_sg(*mrq, msb->data_dir == READ
637 ? MS_TPC_READ_LONG_DATA
638 : MS_TPC_WRITE_LONG_DATA,
639 &t_sg);
640 (*mrq)->need_card_int = 1;
641 return 0;
642 case MS_TPC_READ_LONG_DATA:
643 case MS_TPC_WRITE_LONG_DATA:
644 msb->current_page++;
645 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
646 t_val = (*mrq)->int_reg;
647 goto has_int_reg;
648 } else {
649 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
650 return 0;
651 }
652
653 default:
654 BUG();
655 }
656 }
657
658 /*** Data transfer ***/
659
660 static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
661 {
662 struct mspro_block_data *msb = memstick_get_drvdata(card);
663 sector_t t_sec;
664 unsigned int count;
665 struct mspro_param_register param;
666
667 try_again:
668 while (chunk) {
669 msb->current_page = 0;
670 msb->current_seg = 0;
671 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
672 msb->block_req,
673 msb->req_sg);
674
675 if (!msb->seg_count) {
676 chunk = __blk_end_request(msb->block_req, -ENOMEM,
677 blk_rq_cur_bytes(msb->block_req));
678 continue;
679 }
680
681 t_sec = msb->block_req->sector << 9;
682 sector_div(t_sec, msb->page_size);
683
684 count = msb->block_req->nr_sectors << 9;
685 count /= msb->page_size;
686
687 param.system = msb->system;
688 param.data_count = cpu_to_be16(count);
689 param.data_address = cpu_to_be32((uint32_t)t_sec);
690 param.tpc_param = 0;
691
692 msb->data_dir = rq_data_dir(msb->block_req);
693 msb->transfer_cmd = msb->data_dir == READ
694 ? MSPRO_CMD_READ_DATA
695 : MSPRO_CMD_WRITE_DATA;
696
697 dev_dbg(&card->dev, "data transfer: cmd %x, "
698 "lba %x, count %x\n", msb->transfer_cmd,
699 be32_to_cpu(param.data_address), count);
700
701 card->next_request = h_mspro_block_req_init;
702 msb->mrq_handler = h_mspro_block_transfer_data;
703 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
704 &param, sizeof(param));
705 memstick_new_req(card->host);
706 return 0;
707 }
708
709 dev_dbg(&card->dev, "elv_next\n");
710 msb->block_req = elv_next_request(msb->queue);
711 if (!msb->block_req) {
712 dev_dbg(&card->dev, "issue end\n");
713 return -EAGAIN;
714 }
715
716 dev_dbg(&card->dev, "trying again\n");
717 chunk = 1;
718 goto try_again;
719 }
720
721 static int mspro_block_complete_req(struct memstick_dev *card, int error)
722 {
723 struct mspro_block_data *msb = memstick_get_drvdata(card);
724 int chunk, cnt;
725 unsigned int t_len = 0;
726 unsigned long flags;
727
728 spin_lock_irqsave(&msb->q_lock, flags);
729 dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
730 error);
731
732 if (msb->has_request) {
733 /* Nothing to do - not really an error */
734 if (error == -EAGAIN)
735 error = 0;
736
737 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
738 if (msb->data_dir == READ) {
739 for (cnt = 0; cnt < msb->current_seg; cnt++)
740 t_len += msb->req_sg[cnt].length
741 / msb->page_size;
742
743 if (msb->current_page)
744 t_len += msb->current_page - 1;
745
746 t_len *= msb->page_size;
747 }
748 } else
749 t_len = msb->block_req->nr_sectors << 9;
750
751 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
752
753 if (error && !t_len)
754 t_len = blk_rq_cur_bytes(msb->block_req);
755
756 chunk = __blk_end_request(msb->block_req, error, t_len);
757
758 error = mspro_block_issue_req(card, chunk);
759
760 if (!error)
761 goto out;
762 else
763 msb->has_request = 0;
764 } else {
765 if (!error)
766 error = -EAGAIN;
767 }
768
769 card->next_request = h_mspro_block_default_bad;
770 complete_all(&card->mrq_complete);
771 out:
772 spin_unlock_irqrestore(&msb->q_lock, flags);
773 return error;
774 }
775
776 static void mspro_block_stop(struct memstick_dev *card)
777 {
778 struct mspro_block_data *msb = memstick_get_drvdata(card);
779 int rc = 0;
780 unsigned long flags;
781
782 while (1) {
783 spin_lock_irqsave(&msb->q_lock, flags);
784 if (!msb->has_request) {
785 blk_stop_queue(msb->queue);
786 rc = 1;
787 }
788 spin_unlock_irqrestore(&msb->q_lock, flags);
789
790 if (rc)
791 break;
792
793 wait_for_completion(&card->mrq_complete);
794 }
795 }
796
797 static void mspro_block_start(struct memstick_dev *card)
798 {
799 struct mspro_block_data *msb = memstick_get_drvdata(card);
800 unsigned long flags;
801
802 spin_lock_irqsave(&msb->q_lock, flags);
803 blk_start_queue(msb->queue);
804 spin_unlock_irqrestore(&msb->q_lock, flags);
805 }
806
807 static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
808 {
809 if (!blk_fs_request(req) && !blk_pc_request(req)) {
810 blk_dump_rq_flags(req, "MSPro unsupported request");
811 return BLKPREP_KILL;
812 }
813
814 req->cmd_flags |= REQ_DONTPREP;
815
816 return BLKPREP_OK;
817 }
818
819 static void mspro_block_submit_req(struct request_queue *q)
820 {
821 struct memstick_dev *card = q->queuedata;
822 struct mspro_block_data *msb = memstick_get_drvdata(card);
823 struct request *req = NULL;
824
825 if (msb->has_request)
826 return;
827
828 if (msb->eject) {
829 while ((req = elv_next_request(q)) != NULL)
830 __blk_end_request(req, -ENODEV, blk_rq_bytes(req));
831
832 return;
833 }
834
835 msb->has_request = 1;
836 if (mspro_block_issue_req(card, 0))
837 msb->has_request = 0;
838 }
839
840 /*** Initialization ***/
841
842 static int mspro_block_wait_for_ced(struct memstick_dev *card)
843 {
844 struct mspro_block_data *msb = memstick_get_drvdata(card);
845
846 card->next_request = h_mspro_block_req_init;
847 msb->mrq_handler = h_mspro_block_wait_for_ced;
848 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
849 memstick_new_req(card->host);
850 wait_for_completion(&card->mrq_complete);
851 return card->current_mrq.error;
852 }
853
854 static int mspro_block_set_interface(struct memstick_dev *card,
855 unsigned char sys_reg)
856 {
857 struct memstick_host *host = card->host;
858 struct mspro_block_data *msb = memstick_get_drvdata(card);
859 struct mspro_param_register param = {
860 .system = sys_reg,
861 .data_count = 0,
862 .data_address = 0,
863 .tpc_param = 0
864 };
865
866 card->next_request = h_mspro_block_req_init;
867 msb->mrq_handler = h_mspro_block_default;
868 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
869 sizeof(param));
870 memstick_new_req(host);
871 wait_for_completion(&card->mrq_complete);
872 return card->current_mrq.error;
873 }
874
875 static int mspro_block_switch_interface(struct memstick_dev *card)
876 {
877 struct memstick_host *host = card->host;
878 struct mspro_block_data *msb = memstick_get_drvdata(card);
879 int rc = 0;
880
881 try_again:
882 if (msb->caps & MEMSTICK_CAP_PAR4)
883 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
884 else
885 return 0;
886
887 if (rc) {
888 printk(KERN_WARNING
889 "%s: could not switch to 4-bit mode, error %d\n",
890 card->dev.bus_id, rc);
891 return 0;
892 }
893
894 msb->system = MEMSTICK_SYS_PAR4;
895 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
896 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
897 card->dev.bus_id);
898
899 if (msb->caps & MEMSTICK_CAP_PAR8) {
900 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
901
902 if (!rc) {
903 msb->system = MEMSTICK_SYS_PAR8;
904 host->set_param(host, MEMSTICK_INTERFACE,
905 MEMSTICK_PAR8);
906 printk(KERN_INFO
907 "%s: switching to 8-bit parallel mode\n",
908 card->dev.bus_id);
909 } else
910 printk(KERN_WARNING
911 "%s: could not switch to 8-bit mode, error %d\n",
912 card->dev.bus_id, rc);
913 }
914
915 card->next_request = h_mspro_block_req_init;
916 msb->mrq_handler = h_mspro_block_default;
917 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
918 memstick_new_req(card->host);
919 wait_for_completion(&card->mrq_complete);
920 rc = card->current_mrq.error;
921
922 if (rc) {
923 printk(KERN_WARNING
924 "%s: interface error, trying to fall back to serial\n",
925 card->dev.bus_id);
926 msb->system = MEMSTICK_SYS_SERIAL;
927 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
928 msleep(10);
929 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
930 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
931
932 rc = memstick_set_rw_addr(card);
933 if (!rc)
934 rc = mspro_block_set_interface(card, msb->system);
935
936 if (!rc) {
937 msleep(150);
938 rc = mspro_block_wait_for_ced(card);
939 if (rc)
940 return rc;
941
942 if (msb->caps & MEMSTICK_CAP_PAR8) {
943 msb->caps &= ~MEMSTICK_CAP_PAR8;
944 goto try_again;
945 }
946 }
947 }
948 return rc;
949 }
950
951 /* Memory allocated for attributes by this function should be freed by
952 * mspro_block_data_clear, no matter if the initialization process succeded
953 * or failed.
954 */
955 static int mspro_block_read_attributes(struct memstick_dev *card)
956 {
957 struct mspro_block_data *msb = memstick_get_drvdata(card);
958 struct mspro_param_register param = {
959 .system = msb->system,
960 .data_count = cpu_to_be16(1),
961 .data_address = 0,
962 .tpc_param = 0
963 };
964 struct mspro_attribute *attr = NULL;
965 struct mspro_sys_attr *s_attr = NULL;
966 unsigned char *buffer = NULL;
967 int cnt, rc, attr_count;
968 unsigned int addr;
969 unsigned short page_count;
970
971 attr = kmalloc(msb->page_size, GFP_KERNEL);
972 if (!attr)
973 return -ENOMEM;
974
975 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
976 msb->seg_count = 1;
977 msb->current_seg = 0;
978 msb->current_page = 0;
979 msb->data_dir = READ;
980 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
981
982 card->next_request = h_mspro_block_req_init;
983 msb->mrq_handler = h_mspro_block_transfer_data;
984 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
985 sizeof(param));
986 memstick_new_req(card->host);
987 wait_for_completion(&card->mrq_complete);
988 if (card->current_mrq.error) {
989 rc = card->current_mrq.error;
990 goto out_free_attr;
991 }
992
993 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
994 printk(KERN_ERR "%s: unrecognized device signature %x\n",
995 card->dev.bus_id, be16_to_cpu(attr->signature));
996 rc = -ENODEV;
997 goto out_free_attr;
998 }
999
1000 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1001 printk(KERN_WARNING "%s: way too many attribute entries\n",
1002 card->dev.bus_id);
1003 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1004 } else
1005 attr_count = attr->count;
1006
1007 msb->attr_group.attrs = kzalloc((attr_count + 1)
1008 * sizeof(struct attribute),
1009 GFP_KERNEL);
1010 if (!msb->attr_group.attrs) {
1011 rc = -ENOMEM;
1012 goto out_free_attr;
1013 }
1014 msb->attr_group.name = "media_attributes";
1015
1016 buffer = kmalloc(msb->page_size, GFP_KERNEL);
1017 if (!buffer) {
1018 rc = -ENOMEM;
1019 goto out_free_attr;
1020 }
1021 memcpy(buffer, (char *)attr, msb->page_size);
1022 page_count = 1;
1023
1024 for (cnt = 0; cnt < attr_count; ++cnt) {
1025 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1026 if (!s_attr) {
1027 rc = -ENOMEM;
1028 goto out_free_buffer;
1029 }
1030
1031 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1032 addr = be32_to_cpu(attr->entries[cnt].address);
1033 rc = be32_to_cpu(attr->entries[cnt].size);
1034 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1035 "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
1036 s_attr->id = attr->entries[cnt].id;
1037 if (mspro_block_attr_name(s_attr->id))
1038 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1039 mspro_block_attr_name(attr->entries[cnt].id));
1040 else
1041 snprintf(s_attr->name, sizeof(s_attr->name),
1042 "attr_x%02x", attr->entries[cnt].id);
1043
1044 s_attr->dev_attr.attr.name = s_attr->name;
1045 s_attr->dev_attr.attr.mode = S_IRUGO;
1046 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1047
1048 if (!rc)
1049 continue;
1050
1051 s_attr->size = rc;
1052 s_attr->data = kmalloc(rc, GFP_KERNEL);
1053 if (!s_attr->data) {
1054 rc = -ENOMEM;
1055 goto out_free_buffer;
1056 }
1057
1058 if (((addr / msb->page_size)
1059 == be32_to_cpu(param.data_address))
1060 && (((addr + rc - 1) / msb->page_size)
1061 == be32_to_cpu(param.data_address))) {
1062 memcpy(s_attr->data, buffer + addr % msb->page_size,
1063 rc);
1064 continue;
1065 }
1066
1067 if (page_count <= (rc / msb->page_size)) {
1068 kfree(buffer);
1069 page_count = (rc / msb->page_size) + 1;
1070 buffer = kmalloc(page_count * msb->page_size,
1071 GFP_KERNEL);
1072 if (!buffer) {
1073 rc = -ENOMEM;
1074 goto out_free_attr;
1075 }
1076 }
1077
1078 param.system = msb->system;
1079 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
1080 param.data_address = cpu_to_be32(addr / msb->page_size);
1081 param.tpc_param = 0;
1082
1083 sg_init_one(&msb->req_sg[0], buffer,
1084 be16_to_cpu(param.data_count) * msb->page_size);
1085 msb->seg_count = 1;
1086 msb->current_seg = 0;
1087 msb->current_page = 0;
1088 msb->data_dir = READ;
1089 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1090
1091 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
1092 be32_to_cpu(param.data_address),
1093 be16_to_cpu(param.data_count));
1094
1095 card->next_request = h_mspro_block_req_init;
1096 msb->mrq_handler = h_mspro_block_transfer_data;
1097 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
1098 (char *)&param, sizeof(param));
1099 memstick_new_req(card->host);
1100 wait_for_completion(&card->mrq_complete);
1101 if (card->current_mrq.error) {
1102 rc = card->current_mrq.error;
1103 goto out_free_buffer;
1104 }
1105
1106 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
1107 }
1108
1109 rc = 0;
1110 out_free_buffer:
1111 kfree(buffer);
1112 out_free_attr:
1113 kfree(attr);
1114 return rc;
1115 }
1116
1117 static int mspro_block_init_card(struct memstick_dev *card)
1118 {
1119 struct mspro_block_data *msb = memstick_get_drvdata(card);
1120 struct memstick_host *host = card->host;
1121 int rc = 0;
1122
1123 msb->system = MEMSTICK_SYS_SERIAL;
1124 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1125 card->reg_addr.r_length = sizeof(struct ms_status_register);
1126 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1127 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1128
1129 if (memstick_set_rw_addr(card))
1130 return -EIO;
1131
1132 msb->caps = host->caps;
1133
1134 msleep(150);
1135 rc = mspro_block_wait_for_ced(card);
1136 if (rc)
1137 return rc;
1138
1139 rc = mspro_block_switch_interface(card);
1140 if (rc)
1141 return rc;
1142
1143 dev_dbg(&card->dev, "card activated\n");
1144 if (msb->system != MEMSTICK_SYS_SERIAL)
1145 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1146
1147 card->next_request = h_mspro_block_req_init;
1148 msb->mrq_handler = h_mspro_block_get_ro;
1149 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1150 sizeof(struct ms_status_register));
1151 memstick_new_req(card->host);
1152 wait_for_completion(&card->mrq_complete);
1153 if (card->current_mrq.error)
1154 return card->current_mrq.error;
1155
1156 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1157
1158 msb->page_size = 512;
1159 rc = mspro_block_read_attributes(card);
1160 if (rc)
1161 return rc;
1162
1163 dev_dbg(&card->dev, "attributes loaded\n");
1164 return 0;
1165
1166 }
1167
1168 static int mspro_block_init_disk(struct memstick_dev *card)
1169 {
1170 struct mspro_block_data *msb = memstick_get_drvdata(card);
1171 struct memstick_host *host = card->host;
1172 struct mspro_devinfo *dev_info = NULL;
1173 struct mspro_sys_info *sys_info = NULL;
1174 struct mspro_sys_attr *s_attr = NULL;
1175 int rc, disk_id;
1176 u64 limit = BLK_BOUNCE_HIGH;
1177 unsigned long capacity;
1178
1179 if (host->dev.dma_mask && *(host->dev.dma_mask))
1180 limit = *(host->dev.dma_mask);
1181
1182 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1183 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1184
1185 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1186 dev_info = s_attr->data;
1187 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1188 sys_info = s_attr->data;
1189 }
1190
1191 if (!dev_info || !sys_info)
1192 return -ENODEV;
1193
1194 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1195 msb->heads = be16_to_cpu(dev_info->heads);
1196 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1197
1198 msb->page_size = be16_to_cpu(sys_info->unit_size);
1199
1200 if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1201 return -ENOMEM;
1202
1203 mutex_lock(&mspro_block_disk_lock);
1204 rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1205 mutex_unlock(&mspro_block_disk_lock);
1206
1207 if (rc)
1208 return rc;
1209
1210 if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
1211 rc = -ENOSPC;
1212 goto out_release_id;
1213 }
1214
1215 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
1216 if (!msb->disk) {
1217 rc = -ENOMEM;
1218 goto out_release_id;
1219 }
1220
1221 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
1222 if (!msb->queue) {
1223 rc = -ENOMEM;
1224 goto out_put_disk;
1225 }
1226
1227 msb->queue->queuedata = card;
1228 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
1229
1230 blk_queue_bounce_limit(msb->queue, limit);
1231 blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1232 blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1233 blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1234 blk_queue_max_segment_size(msb->queue,
1235 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1236
1237 msb->disk->major = major;
1238 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1239 msb->disk->fops = &ms_block_bdops;
1240 msb->usage_count = 1;
1241 msb->disk->private_data = msb;
1242 msb->disk->queue = msb->queue;
1243 msb->disk->driverfs_dev = &card->dev;
1244
1245 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1246
1247 blk_queue_hardsect_size(msb->queue, msb->page_size);
1248
1249 capacity = be16_to_cpu(sys_info->user_block_count);
1250 capacity *= be16_to_cpu(sys_info->block_size);
1251 capacity *= msb->page_size >> 9;
1252 set_capacity(msb->disk, capacity);
1253 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1254
1255 add_disk(msb->disk);
1256 msb->active = 1;
1257 return 0;
1258
1259 out_put_disk:
1260 put_disk(msb->disk);
1261 out_release_id:
1262 mutex_lock(&mspro_block_disk_lock);
1263 idr_remove(&mspro_block_disk_idr, disk_id);
1264 mutex_unlock(&mspro_block_disk_lock);
1265 return rc;
1266 }
1267
1268 static void mspro_block_data_clear(struct mspro_block_data *msb)
1269 {
1270 int cnt;
1271 struct mspro_sys_attr *s_attr;
1272
1273 if (msb->attr_group.attrs) {
1274 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1275 s_attr = mspro_from_sysfs_attr(msb->attr_group
1276 .attrs[cnt]);
1277 kfree(s_attr->data);
1278 kfree(s_attr);
1279 }
1280 kfree(msb->attr_group.attrs);
1281 }
1282
1283 msb->card = NULL;
1284 }
1285
1286 static int mspro_block_check_card(struct memstick_dev *card)
1287 {
1288 struct mspro_block_data *msb = memstick_get_drvdata(card);
1289
1290 return (msb->active == 1);
1291 }
1292
1293 static int mspro_block_probe(struct memstick_dev *card)
1294 {
1295 struct mspro_block_data *msb;
1296 int rc = 0;
1297
1298 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1299 if (!msb)
1300 return -ENOMEM;
1301 memstick_set_drvdata(card, msb);
1302 msb->card = card;
1303 spin_lock_init(&msb->q_lock);
1304
1305 rc = mspro_block_init_card(card);
1306
1307 if (rc)
1308 goto out_free;
1309
1310 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1311 if (rc)
1312 goto out_free;
1313
1314 rc = mspro_block_init_disk(card);
1315 if (!rc) {
1316 card->check = mspro_block_check_card;
1317 card->stop = mspro_block_stop;
1318 card->start = mspro_block_start;
1319 return 0;
1320 }
1321
1322 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1323 out_free:
1324 memstick_set_drvdata(card, NULL);
1325 mspro_block_data_clear(msb);
1326 kfree(msb);
1327 return rc;
1328 }
1329
1330 static void mspro_block_remove(struct memstick_dev *card)
1331 {
1332 struct mspro_block_data *msb = memstick_get_drvdata(card);
1333 unsigned long flags;
1334
1335 del_gendisk(msb->disk);
1336 dev_dbg(&card->dev, "mspro block remove\n");
1337 spin_lock_irqsave(&msb->q_lock, flags);
1338 msb->eject = 1;
1339 blk_start_queue(msb->queue);
1340 spin_unlock_irqrestore(&msb->q_lock, flags);
1341
1342 blk_cleanup_queue(msb->queue);
1343 msb->queue = NULL;
1344
1345 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1346
1347 mutex_lock(&mspro_block_disk_lock);
1348 mspro_block_data_clear(msb);
1349 mutex_unlock(&mspro_block_disk_lock);
1350
1351 mspro_block_disk_release(msb->disk);
1352 memstick_set_drvdata(card, NULL);
1353 }
1354
1355 #ifdef CONFIG_PM
1356
1357 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1358 {
1359 struct mspro_block_data *msb = memstick_get_drvdata(card);
1360 unsigned long flags;
1361
1362 spin_lock_irqsave(&msb->q_lock, flags);
1363 blk_stop_queue(msb->queue);
1364 msb->active = 0;
1365 spin_unlock_irqrestore(&msb->q_lock, flags);
1366
1367 return 0;
1368 }
1369
1370 static int mspro_block_resume(struct memstick_dev *card)
1371 {
1372 struct mspro_block_data *msb = memstick_get_drvdata(card);
1373 unsigned long flags;
1374 int rc = 0;
1375
1376 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1377
1378 struct mspro_block_data *new_msb;
1379 struct memstick_host *host = card->host;
1380 struct mspro_sys_attr *s_attr, *r_attr;
1381 unsigned char cnt;
1382
1383 mutex_lock(&host->lock);
1384 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1385 if (!new_msb) {
1386 rc = -ENOMEM;
1387 goto out_unlock;
1388 }
1389
1390 new_msb->card = card;
1391 memstick_set_drvdata(card, new_msb);
1392 if (mspro_block_init_card(card))
1393 goto out_free;
1394
1395 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1396 && msb->attr_group.attrs[cnt]; ++cnt) {
1397 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1398 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1399
1400 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1401 && r_attr->id == s_attr->id) {
1402 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1403 break;
1404
1405 msb->active = 1;
1406 break;
1407 }
1408 }
1409
1410 out_free:
1411 memstick_set_drvdata(card, msb);
1412 mspro_block_data_clear(new_msb);
1413 kfree(new_msb);
1414 out_unlock:
1415 mutex_unlock(&host->lock);
1416
1417 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1418
1419 spin_lock_irqsave(&msb->q_lock, flags);
1420 blk_start_queue(msb->queue);
1421 spin_unlock_irqrestore(&msb->q_lock, flags);
1422 return rc;
1423 }
1424
1425 #else
1426
1427 #define mspro_block_suspend NULL
1428 #define mspro_block_resume NULL
1429
1430 #endif /* CONFIG_PM */
1431
1432 static struct memstick_device_id mspro_block_id_tbl[] = {
1433 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1434 MEMSTICK_CLASS_DUO},
1435 {}
1436 };
1437
1438
1439 static struct memstick_driver mspro_block_driver = {
1440 .driver = {
1441 .name = DRIVER_NAME,
1442 .owner = THIS_MODULE
1443 },
1444 .id_table = mspro_block_id_tbl,
1445 .probe = mspro_block_probe,
1446 .remove = mspro_block_remove,
1447 .suspend = mspro_block_suspend,
1448 .resume = mspro_block_resume
1449 };
1450
1451 static int __init mspro_block_init(void)
1452 {
1453 int rc = -ENOMEM;
1454
1455 rc = register_blkdev(major, DRIVER_NAME);
1456 if (rc < 0) {
1457 printk(KERN_ERR DRIVER_NAME ": failed to register "
1458 "major %d, error %d\n", major, rc);
1459 return rc;
1460 }
1461 if (!major)
1462 major = rc;
1463
1464 rc = memstick_register_driver(&mspro_block_driver);
1465 if (rc)
1466 unregister_blkdev(major, DRIVER_NAME);
1467 return rc;
1468 }
1469
1470 static void __exit mspro_block_exit(void)
1471 {
1472 memstick_unregister_driver(&mspro_block_driver);
1473 unregister_blkdev(major, DRIVER_NAME);
1474 idr_destroy(&mspro_block_disk_idr);
1475 }
1476
1477 module_init(mspro_block_init);
1478 module_exit(mspro_block_exit);
1479
1480 MODULE_LICENSE("GPL");
1481 MODULE_AUTHOR("Alex Dubov");
1482 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1483 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
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