]> git.ipfire.org Git - thirdparty/kernel/stable.git/blob - drivers/memstick/core/mspro_block.c
projects / thirdparty / kernel / stable.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
block: don't depend on consecutive minor space
[thirdparty/kernel/stable.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/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 inode *inode, struct file *filp)
176 {
177 struct gendisk *disk = inode->i_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 ((filp->f_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 inode *inode, struct file *filp)
222 {
223 struct gendisk *disk = inode->i_bdev->bd_disk;
224 return mspro_block_disk_release(disk);
225 }
226
227 static int mspro_block_bd_getgeo(struct block_device *bdev,
228 struct hd_geometry *geo)
229 {
230 struct mspro_block_data *msb = bdev->bd_disk->private_data;
231
232 geo->heads = msb->heads;
233 geo->sectors = msb->sectors_per_track;
234 geo->cylinders = msb->cylinders;
235
236 return 0;
237 }
238
239 static struct block_device_operations ms_block_bdops = {
240 .open = mspro_block_bd_open,
241 .release = mspro_block_bd_release,
242 .getgeo = mspro_block_bd_getgeo,
243 .owner = THIS_MODULE
244 };
245
246 /*** Information ***/
247
248 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
249 {
250 struct device_attribute *dev_attr
251 = container_of(attr, struct device_attribute, attr);
252 return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
253 }
254
255 static const char *mspro_block_attr_name(unsigned char tag)
256 {
257 switch (tag) {
258 case MSPRO_BLOCK_ID_SYSINFO:
259 return "attr_sysinfo";
260 case MSPRO_BLOCK_ID_MODELNAME:
261 return "attr_modelname";
262 case MSPRO_BLOCK_ID_MBR:
263 return "attr_mbr";
264 case MSPRO_BLOCK_ID_PBR16:
265 return "attr_pbr16";
266 case MSPRO_BLOCK_ID_PBR32:
267 return "attr_pbr32";
268 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
269 return "attr_specfilevalues1";
270 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
271 return "attr_specfilevalues2";
272 case MSPRO_BLOCK_ID_DEVINFO:
273 return "attr_devinfo";
274 default:
275 return NULL;
276 };
277 }
278
279 typedef ssize_t (*sysfs_show_t)(struct device *dev,
280 struct device_attribute *attr,
281 char *buffer);
282
283 static ssize_t mspro_block_attr_show_default(struct device *dev,
284 struct device_attribute *attr,
285 char *buffer)
286 {
287 struct mspro_sys_attr *s_attr = container_of(attr,
288 struct mspro_sys_attr,
289 dev_attr);
290
291 ssize_t cnt, rc = 0;
292
293 for (cnt = 0; cnt < s_attr->size; cnt++) {
294 if (cnt && !(cnt % 16)) {
295 if (PAGE_SIZE - rc)
296 buffer[rc++] = '\n';
297 }
298
299 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
300 ((unsigned char *)s_attr->data)[cnt]);
301 }
302 return rc;
303 }
304
305 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
306 struct device_attribute *attr,
307 char *buffer)
308 {
309 struct mspro_sys_attr *x_attr = container_of(attr,
310 struct mspro_sys_attr,
311 dev_attr);
312 struct mspro_sys_info *x_sys = x_attr->data;
313 ssize_t rc = 0;
314 int date_tz = 0, date_tz_f = 0;
315
316 if (x_sys->assembly_date[0] > 0x80U) {
317 date_tz = (~x_sys->assembly_date[0]) + 1;
318 date_tz_f = date_tz & 3;
319 date_tz >>= 2;
320 date_tz = -date_tz;
321 date_tz_f *= 15;
322 } else if (x_sys->assembly_date[0] < 0x80U) {
323 date_tz = x_sys->assembly_date[0];
324 date_tz_f = date_tz & 3;
325 date_tz >>= 2;
326 date_tz_f *= 15;
327 }
328
329 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
330 x_sys->class);
331 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
332 be16_to_cpu(x_sys->block_size));
333 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
334 be16_to_cpu(x_sys->block_count));
335 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
336 be16_to_cpu(x_sys->user_block_count));
337 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
338 be16_to_cpu(x_sys->page_size));
339 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
340 "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
341 date_tz, date_tz_f,
342 be16_to_cpu(*(unsigned short *)
343 &x_sys->assembly_date[1]),
344 x_sys->assembly_date[3], x_sys->assembly_date[4],
345 x_sys->assembly_date[5], x_sys->assembly_date[6],
346 x_sys->assembly_date[7]);
347 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
348 be32_to_cpu(x_sys->serial_number));
349 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
350 "assembly maker code: %x\n",
351 x_sys->assembly_maker_code);
352 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
353 "%02x%02x%02x\n", x_sys->assembly_model_code[0],
354 x_sys->assembly_model_code[1],
355 x_sys->assembly_model_code[2]);
356 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
357 be16_to_cpu(x_sys->memory_maker_code));
358 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
359 be16_to_cpu(x_sys->memory_model_code));
360 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
361 x_sys->vcc);
362 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
363 x_sys->vpp);
364 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
365 be16_to_cpu(x_sys->controller_number));
366 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
367 "controller function: %x\n",
368 be16_to_cpu(x_sys->controller_function));
369 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
370 be16_to_cpu(x_sys->start_sector));
371 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
372 be16_to_cpu(x_sys->unit_size));
373 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
374 x_sys->ms_sub_class);
375 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
376 x_sys->interface_type);
377 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
378 be16_to_cpu(x_sys->controller_code));
379 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
380 x_sys->format_type);
381 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
382 x_sys->device_type);
383 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
384 x_sys->mspro_id);
385 return rc;
386 }
387
388 static ssize_t mspro_block_attr_show_modelname(struct device *dev,
389 struct device_attribute *attr,
390 char *buffer)
391 {
392 struct mspro_sys_attr *s_attr = container_of(attr,
393 struct mspro_sys_attr,
394 dev_attr);
395
396 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
397 }
398
399 static ssize_t mspro_block_attr_show_mbr(struct device *dev,
400 struct device_attribute *attr,
401 char *buffer)
402 {
403 struct mspro_sys_attr *x_attr = container_of(attr,
404 struct mspro_sys_attr,
405 dev_attr);
406 struct mspro_mbr *x_mbr = x_attr->data;
407 ssize_t rc = 0;
408
409 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
410 x_mbr->boot_partition);
411 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
412 x_mbr->start_head);
413 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
414 x_mbr->start_sector);
415 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
416 x_mbr->start_cylinder);
417 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
418 x_mbr->partition_type);
419 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
420 x_mbr->end_head);
421 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
422 x_mbr->end_sector);
423 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
424 x_mbr->end_cylinder);
425 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
426 x_mbr->start_sectors);
427 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
428 "sectors per partition: %x\n",
429 x_mbr->sectors_per_partition);
430 return rc;
431 }
432
433 static ssize_t mspro_block_attr_show_specfile(struct device *dev,
434 struct device_attribute *attr,
435 char *buffer)
436 {
437 struct mspro_sys_attr *x_attr = container_of(attr,
438 struct mspro_sys_attr,
439 dev_attr);
440 struct mspro_specfile *x_spfile = x_attr->data;
441 char name[9], ext[4];
442 ssize_t rc = 0;
443
444 memcpy(name, x_spfile->name, 8);
445 name[8] = 0;
446 memcpy(ext, x_spfile->ext, 3);
447 ext[3] = 0;
448
449 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
450 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
451 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
452 x_spfile->attr);
453 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
454 x_spfile->time >> 11,
455 (x_spfile->time >> 5) & 0x3f,
456 (x_spfile->time & 0x1f) * 2);
457 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
458 (x_spfile->date >> 9) + 1980,
459 (x_spfile->date >> 5) & 0xf,
460 x_spfile->date & 0x1f);
461 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
462 x_spfile->cluster);
463 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
464 x_spfile->size);
465 return rc;
466 }
467
468 static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
469 struct device_attribute *attr,
470 char *buffer)
471 {
472 struct mspro_sys_attr *x_attr = container_of(attr,
473 struct mspro_sys_attr,
474 dev_attr);
475 struct mspro_devinfo *x_devinfo = x_attr->data;
476 ssize_t rc = 0;
477
478 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
479 be16_to_cpu(x_devinfo->cylinders));
480 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
481 be16_to_cpu(x_devinfo->heads));
482 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
483 be16_to_cpu(x_devinfo->bytes_per_track));
484 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
485 be16_to_cpu(x_devinfo->bytes_per_sector));
486 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
487 be16_to_cpu(x_devinfo->sectors_per_track));
488 return rc;
489 }
490
491 static sysfs_show_t mspro_block_attr_show(unsigned char tag)
492 {
493 switch (tag) {
494 case MSPRO_BLOCK_ID_SYSINFO:
495 return mspro_block_attr_show_sysinfo;
496 case MSPRO_BLOCK_ID_MODELNAME:
497 return mspro_block_attr_show_modelname;
498 case MSPRO_BLOCK_ID_MBR:
499 return mspro_block_attr_show_mbr;
500 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
501 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
502 return mspro_block_attr_show_specfile;
503 case MSPRO_BLOCK_ID_DEVINFO:
504 return mspro_block_attr_show_devinfo;
505 default:
506 return mspro_block_attr_show_default;
507 }
508 }
509
510 /*** Protocol handlers ***/
511
512 /*
513 * Functions prefixed with "h_" are protocol callbacks. They can be called from
514 * interrupt context. Return value of 0 means that request processing is still
515 * ongoing, while special error value of -EAGAIN means that current request is
516 * finished (and request processor should come back some time later).
517 */
518
519 static int h_mspro_block_req_init(struct memstick_dev *card,
520 struct memstick_request **mrq)
521 {
522 struct mspro_block_data *msb = memstick_get_drvdata(card);
523
524 *mrq = &card->current_mrq;
525 card->next_request = msb->mrq_handler;
526 return 0;
527 }
528
529 static int h_mspro_block_default(struct memstick_dev *card,
530 struct memstick_request **mrq)
531 {
532 return mspro_block_complete_req(card, (*mrq)->error);
533 }
534
535 static int h_mspro_block_default_bad(struct memstick_dev *card,
536 struct memstick_request **mrq)
537 {
538 return -ENXIO;
539 }
540
541 static int h_mspro_block_get_ro(struct memstick_dev *card,
542 struct memstick_request **mrq)
543 {
544 struct mspro_block_data *msb = memstick_get_drvdata(card);
545
546 if (!(*mrq)->error) {
547 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
548 & MEMSTICK_STATUS0_WP)
549 msb->read_only = 1;
550 else
551 msb->read_only = 0;
552 }
553
554 return mspro_block_complete_req(card, (*mrq)->error);
555 }
556
557 static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
558 struct memstick_request **mrq)
559 {
560 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
561
562 if (!(*mrq)->error) {
563 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
564 (*mrq)->error = -EFAULT;
565 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
566 return 0;
567 }
568
569 return mspro_block_complete_req(card, (*mrq)->error);
570 }
571
572 static int h_mspro_block_transfer_data(struct memstick_dev *card,
573 struct memstick_request **mrq)
574 {
575 struct mspro_block_data *msb = memstick_get_drvdata(card);
576 unsigned char t_val = 0;
577 struct scatterlist t_sg = { 0 };
578 size_t t_offset;
579
580 if ((*mrq)->error)
581 return mspro_block_complete_req(card, (*mrq)->error);
582
583 switch ((*mrq)->tpc) {
584 case MS_TPC_WRITE_REG:
585 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
586 (*mrq)->need_card_int = 1;
587 return 0;
588 case MS_TPC_SET_CMD:
589 t_val = (*mrq)->int_reg;
590 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
591 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
592 goto has_int_reg;
593 return 0;
594 case MS_TPC_GET_INT:
595 t_val = (*mrq)->data[0];
596 has_int_reg:
597 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
598 t_val = MSPRO_CMD_STOP;
599 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
600 card->next_request = h_mspro_block_default;
601 return 0;
602 }
603
604 if (msb->current_page
605 == (msb->req_sg[msb->current_seg].length
606 / msb->page_size)) {
607 msb->current_page = 0;
608 msb->current_seg++;
609
610 if (msb->current_seg == msb->seg_count) {
611 if (t_val & MEMSTICK_INT_CED) {
612 return mspro_block_complete_req(card,
613 0);
614 } else {
615 card->next_request
616 = h_mspro_block_wait_for_ced;
617 memstick_init_req(*mrq, MS_TPC_GET_INT,
618 NULL, 1);
619 return 0;
620 }
621 }
622 }
623
624 if (!(t_val & MEMSTICK_INT_BREQ)) {
625 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
626 return 0;
627 }
628
629 t_offset = msb->req_sg[msb->current_seg].offset;
630 t_offset += msb->current_page * msb->page_size;
631
632 sg_set_page(&t_sg,
633 nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
634 t_offset >> PAGE_SHIFT),
635 msb->page_size, offset_in_page(t_offset));
636
637 memstick_init_req_sg(*mrq, msb->data_dir == READ
638 ? MS_TPC_READ_LONG_DATA
639 : MS_TPC_WRITE_LONG_DATA,
640 &t_sg);
641 (*mrq)->need_card_int = 1;
642 return 0;
643 case MS_TPC_READ_LONG_DATA:
644 case MS_TPC_WRITE_LONG_DATA:
645 msb->current_page++;
646 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
647 t_val = (*mrq)->int_reg;
648 goto has_int_reg;
649 } else {
650 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
651 return 0;
652 }
653
654 default:
655 BUG();
656 }
657 }
658
659 /*** Data transfer ***/
660
661 static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
662 {
663 struct mspro_block_data *msb = memstick_get_drvdata(card);
664 sector_t t_sec;
665 unsigned int count;
666 struct mspro_param_register param;
667
668 try_again:
669 while (chunk) {
670 msb->current_page = 0;
671 msb->current_seg = 0;
672 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
673 msb->block_req,
674 msb->req_sg);
675
676 if (!msb->seg_count) {
677 chunk = __blk_end_request(msb->block_req, -ENOMEM,
678 blk_rq_cur_bytes(msb->block_req));
679 continue;
680 }
681
682 t_sec = msb->block_req->sector << 9;
683 sector_div(t_sec, msb->page_size);
684
685 count = msb->block_req->nr_sectors << 9;
686 count /= msb->page_size;
687
688 param.system = msb->system;
689 param.data_count = cpu_to_be16(count);
690 param.data_address = cpu_to_be32((uint32_t)t_sec);
691 param.tpc_param = 0;
692
693 msb->data_dir = rq_data_dir(msb->block_req);
694 msb->transfer_cmd = msb->data_dir == READ
695 ? MSPRO_CMD_READ_DATA
696 : MSPRO_CMD_WRITE_DATA;
697
698 dev_dbg(&card->dev, "data transfer: cmd %x, "
699 "lba %x, count %x\n", msb->transfer_cmd,
700 be32_to_cpu(param.data_address), count);
701
702 card->next_request = h_mspro_block_req_init;
703 msb->mrq_handler = h_mspro_block_transfer_data;
704 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
705 &param, sizeof(param));
706 memstick_new_req(card->host);
707 return 0;
708 }
709
710 dev_dbg(&card->dev, "elv_next\n");
711 msb->block_req = elv_next_request(msb->queue);
712 if (!msb->block_req) {
713 dev_dbg(&card->dev, "issue end\n");
714 return -EAGAIN;
715 }
716
717 dev_dbg(&card->dev, "trying again\n");
718 chunk = 1;
719 goto try_again;
720 }
721
722 static int mspro_block_complete_req(struct memstick_dev *card, int error)
723 {
724 struct mspro_block_data *msb = memstick_get_drvdata(card);
725 int chunk, cnt;
726 unsigned int t_len = 0;
727 unsigned long flags;
728
729 spin_lock_irqsave(&msb->q_lock, flags);
730 dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
731 error);
732
733 if (msb->has_request) {
734 /* Nothing to do - not really an error */
735 if (error == -EAGAIN)
736 error = 0;
737
738 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
739 if (msb->data_dir == READ) {
740 for (cnt = 0; cnt < msb->current_seg; cnt++)
741 t_len += msb->req_sg[cnt].length
742 / msb->page_size;
743
744 if (msb->current_page)
745 t_len += msb->current_page - 1;
746
747 t_len *= msb->page_size;
748 }
749 } else
750 t_len = msb->block_req->nr_sectors << 9;
751
752 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
753
754 if (error && !t_len)
755 t_len = blk_rq_cur_bytes(msb->block_req);
756
757 chunk = __blk_end_request(msb->block_req, error, t_len);
758
759 error = mspro_block_issue_req(card, chunk);
760
761 if (!error)
762 goto out;
763 else
764 msb->has_request = 0;
765 } else {
766 if (!error)
767 error = -EAGAIN;
768 }
769
770 card->next_request = h_mspro_block_default_bad;
771 complete_all(&card->mrq_complete);
772 out:
773 spin_unlock_irqrestore(&msb->q_lock, flags);
774 return error;
775 }
776
777 static void mspro_block_stop(struct memstick_dev *card)
778 {
779 struct mspro_block_data *msb = memstick_get_drvdata(card);
780 int rc = 0;
781 unsigned long flags;
782
783 while (1) {
784 spin_lock_irqsave(&msb->q_lock, flags);
785 if (!msb->has_request) {
786 blk_stop_queue(msb->queue);
787 rc = 1;
788 }
789 spin_unlock_irqrestore(&msb->q_lock, flags);
790
791 if (rc)
792 break;
793
794 wait_for_completion(&card->mrq_complete);
795 }
796 }
797
798 static void mspro_block_start(struct memstick_dev *card)
799 {
800 struct mspro_block_data *msb = memstick_get_drvdata(card);
801 unsigned long flags;
802
803 spin_lock_irqsave(&msb->q_lock, flags);
804 blk_start_queue(msb->queue);
805 spin_unlock_irqrestore(&msb->q_lock, flags);
806 }
807
808 static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
809 {
810 if (!blk_fs_request(req) && !blk_pc_request(req)) {
811 blk_dump_rq_flags(req, "MSPro unsupported request");
812 return BLKPREP_KILL;
813 }
814
815 req->cmd_flags |= REQ_DONTPREP;
816
817 return BLKPREP_OK;
818 }
819
820 static void mspro_block_submit_req(struct request_queue *q)
821 {
822 struct memstick_dev *card = q->queuedata;
823 struct mspro_block_data *msb = memstick_get_drvdata(card);
824 struct request *req = NULL;
825
826 if (msb->has_request)
827 return;
828
829 if (msb->eject) {
830 while ((req = elv_next_request(q)) != NULL)
831 end_queued_request(req, -ENODEV);
832
833 return;
834 }
835
836 msb->has_request = 1;
837 if (mspro_block_issue_req(card, 0))
838 msb->has_request = 0;
839 }
840
841 /*** Initialization ***/
842
843 static int mspro_block_wait_for_ced(struct memstick_dev *card)
844 {
845 struct mspro_block_data *msb = memstick_get_drvdata(card);
846
847 card->next_request = h_mspro_block_req_init;
848 msb->mrq_handler = h_mspro_block_wait_for_ced;
849 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
850 memstick_new_req(card->host);
851 wait_for_completion(&card->mrq_complete);
852 return card->current_mrq.error;
853 }
854
855 static int mspro_block_set_interface(struct memstick_dev *card,
856 unsigned char sys_reg)
857 {
858 struct memstick_host *host = card->host;
859 struct mspro_block_data *msb = memstick_get_drvdata(card);
860 struct mspro_param_register param = {
861 .system = sys_reg,
862 .data_count = 0,
863 .data_address = 0,
864 .tpc_param = 0
865 };
866
867 card->next_request = h_mspro_block_req_init;
868 msb->mrq_handler = h_mspro_block_default;
869 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
870 sizeof(param));
871 memstick_new_req(host);
872 wait_for_completion(&card->mrq_complete);
873 return card->current_mrq.error;
874 }
875
876 static int mspro_block_switch_interface(struct memstick_dev *card)
877 {
878 struct memstick_host *host = card->host;
879 struct mspro_block_data *msb = memstick_get_drvdata(card);
880 int rc = 0;
881
882 try_again:
883 if (msb->caps & MEMSTICK_CAP_PAR4)
884 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
885 else
886 return 0;
887
888 if (rc) {
889 printk(KERN_WARNING
890 "%s: could not switch to 4-bit mode, error %d\n",
891 card->dev.bus_id, rc);
892 return 0;
893 }
894
895 msb->system = MEMSTICK_SYS_PAR4;
896 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
897 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
898 card->dev.bus_id);
899
900 if (msb->caps & MEMSTICK_CAP_PAR8) {
901 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
902
903 if (!rc) {
904 msb->system = MEMSTICK_SYS_PAR8;
905 host->set_param(host, MEMSTICK_INTERFACE,
906 MEMSTICK_PAR8);
907 printk(KERN_INFO
908 "%s: switching to 8-bit parallel mode\n",
909 card->dev.bus_id);
910 } else
911 printk(KERN_WARNING
912 "%s: could not switch to 8-bit mode, error %d\n",
913 card->dev.bus_id, rc);
914 }
915
916 card->next_request = h_mspro_block_req_init;
917 msb->mrq_handler = h_mspro_block_default;
918 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
919 memstick_new_req(card->host);
920 wait_for_completion(&card->mrq_complete);
921 rc = card->current_mrq.error;
922
923 if (rc) {
924 printk(KERN_WARNING
925 "%s: interface error, trying to fall back to serial\n",
926 card->dev.bus_id);
927 msb->system = MEMSTICK_SYS_SERIAL;
928 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
929 msleep(10);
930 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
931 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
932
933 rc = memstick_set_rw_addr(card);
934 if (!rc)
935 rc = mspro_block_set_interface(card, msb->system);
936
937 if (!rc) {
938 msleep(150);
939 rc = mspro_block_wait_for_ced(card);
940 if (rc)
941 return rc;
942
943 if (msb->caps & MEMSTICK_CAP_PAR8) {
944 msb->caps &= ~MEMSTICK_CAP_PAR8;
945 goto try_again;
946 }
947 }
948 }
949 return rc;
950 }
951
952 /* Memory allocated for attributes by this function should be freed by
953 * mspro_block_data_clear, no matter if the initialization process succeded
954 * or failed.
955 */
956 static int mspro_block_read_attributes(struct memstick_dev *card)
957 {
958 struct mspro_block_data *msb = memstick_get_drvdata(card);
959 struct mspro_param_register param = {
960 .system = msb->system,
961 .data_count = cpu_to_be16(1),
962 .data_address = 0,
963 .tpc_param = 0
964 };
965 struct mspro_attribute *attr = NULL;
966 struct mspro_sys_attr *s_attr = NULL;
967 unsigned char *buffer = NULL;
968 int cnt, rc, attr_count;
969 unsigned int addr;
970 unsigned short page_count;
971
972 attr = kmalloc(msb->page_size, GFP_KERNEL);
973 if (!attr)
974 return -ENOMEM;
975
976 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
977 msb->seg_count = 1;
978 msb->current_seg = 0;
979 msb->current_page = 0;
980 msb->data_dir = READ;
981 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
982
983 card->next_request = h_mspro_block_req_init;
984 msb->mrq_handler = h_mspro_block_transfer_data;
985 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
986 sizeof(param));
987 memstick_new_req(card->host);
988 wait_for_completion(&card->mrq_complete);
989 if (card->current_mrq.error) {
990 rc = card->current_mrq.error;
991 goto out_free_attr;
992 }
993
994 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
995 printk(KERN_ERR "%s: unrecognized device signature %x\n",
996 card->dev.bus_id, be16_to_cpu(attr->signature));
997 rc = -ENODEV;
998 goto out_free_attr;
999 }
1000
1001 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1002 printk(KERN_WARNING "%s: way too many attribute entries\n",
1003 card->dev.bus_id);
1004 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1005 } else
1006 attr_count = attr->count;
1007
1008 msb->attr_group.attrs = kzalloc((attr_count + 1)
1009 * sizeof(struct attribute),
1010 GFP_KERNEL);
1011 if (!msb->attr_group.attrs) {
1012 rc = -ENOMEM;
1013 goto out_free_attr;
1014 }
1015 msb->attr_group.name = "media_attributes";
1016
1017 buffer = kmalloc(msb->page_size, GFP_KERNEL);
1018 if (!buffer) {
1019 rc = -ENOMEM;
1020 goto out_free_attr;
1021 }
1022 memcpy(buffer, (char *)attr, msb->page_size);
1023 page_count = 1;
1024
1025 for (cnt = 0; cnt < attr_count; ++cnt) {
1026 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1027 if (!s_attr) {
1028 rc = -ENOMEM;
1029 goto out_free_buffer;
1030 }
1031
1032 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1033 addr = be32_to_cpu(attr->entries[cnt].address);
1034 rc = be32_to_cpu(attr->entries[cnt].size);
1035 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1036 "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
1037 s_attr->id = attr->entries[cnt].id;
1038 if (mspro_block_attr_name(s_attr->id))
1039 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1040 mspro_block_attr_name(attr->entries[cnt].id));
1041 else
1042 snprintf(s_attr->name, sizeof(s_attr->name),
1043 "attr_x%02x", attr->entries[cnt].id);
1044
1045 s_attr->dev_attr.attr.name = s_attr->name;
1046 s_attr->dev_attr.attr.mode = S_IRUGO;
1047 s_attr->dev_attr.attr.owner = THIS_MODULE;
1048 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1049
1050 if (!rc)
1051 continue;
1052
1053 s_attr->size = rc;
1054 s_attr->data = kmalloc(rc, GFP_KERNEL);
1055 if (!s_attr->data) {
1056 rc = -ENOMEM;
1057 goto out_free_buffer;
1058 }
1059
1060 if (((addr / msb->page_size)
1061 == be32_to_cpu(param.data_address))
1062 && (((addr + rc - 1) / msb->page_size)
1063 == be32_to_cpu(param.data_address))) {
1064 memcpy(s_attr->data, buffer + addr % msb->page_size,
1065 rc);
1066 continue;
1067 }
1068
1069 if (page_count <= (rc / msb->page_size)) {
1070 kfree(buffer);
1071 page_count = (rc / msb->page_size) + 1;
1072 buffer = kmalloc(page_count * msb->page_size,
1073 GFP_KERNEL);
1074 if (!buffer) {
1075 rc = -ENOMEM;
1076 goto out_free_attr;
1077 }
1078 }
1079
1080 param.system = msb->system;
1081 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
1082 param.data_address = cpu_to_be32(addr / msb->page_size);
1083 param.tpc_param = 0;
1084
1085 sg_init_one(&msb->req_sg[0], buffer,
1086 be16_to_cpu(param.data_count) * msb->page_size);
1087 msb->seg_count = 1;
1088 msb->current_seg = 0;
1089 msb->current_page = 0;
1090 msb->data_dir = READ;
1091 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1092
1093 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
1094 be32_to_cpu(param.data_address),
1095 be16_to_cpu(param.data_count));
1096
1097 card->next_request = h_mspro_block_req_init;
1098 msb->mrq_handler = h_mspro_block_transfer_data;
1099 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
1100 (char *)&param, sizeof(param));
1101 memstick_new_req(card->host);
1102 wait_for_completion(&card->mrq_complete);
1103 if (card->current_mrq.error) {
1104 rc = card->current_mrq.error;
1105 goto out_free_buffer;
1106 }
1107
1108 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
1109 }
1110
1111 rc = 0;
1112 out_free_buffer:
1113 kfree(buffer);
1114 out_free_attr:
1115 kfree(attr);
1116 return rc;
1117 }
1118
1119 static int mspro_block_init_card(struct memstick_dev *card)
1120 {
1121 struct mspro_block_data *msb = memstick_get_drvdata(card);
1122 struct memstick_host *host = card->host;
1123 int rc = 0;
1124
1125 msb->system = MEMSTICK_SYS_SERIAL;
1126 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1127 card->reg_addr.r_length = sizeof(struct ms_status_register);
1128 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1129 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1130
1131 if (memstick_set_rw_addr(card))
1132 return -EIO;
1133
1134 msb->caps = host->caps;
1135
1136 msleep(150);
1137 rc = mspro_block_wait_for_ced(card);
1138 if (rc)
1139 return rc;
1140
1141 rc = mspro_block_switch_interface(card);
1142 if (rc)
1143 return rc;
1144
1145 dev_dbg(&card->dev, "card activated\n");
1146 if (msb->system != MEMSTICK_SYS_SERIAL)
1147 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1148
1149 card->next_request = h_mspro_block_req_init;
1150 msb->mrq_handler = h_mspro_block_get_ro;
1151 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1152 sizeof(struct ms_status_register));
1153 memstick_new_req(card->host);
1154 wait_for_completion(&card->mrq_complete);
1155 if (card->current_mrq.error)
1156 return card->current_mrq.error;
1157
1158 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1159
1160 msb->page_size = 512;
1161 rc = mspro_block_read_attributes(card);
1162 if (rc)
1163 return rc;
1164
1165 dev_dbg(&card->dev, "attributes loaded\n");
1166 return 0;
1167
1168 }
1169
1170 static int mspro_block_init_disk(struct memstick_dev *card)
1171 {
1172 struct mspro_block_data *msb = memstick_get_drvdata(card);
1173 struct memstick_host *host = card->host;
1174 struct mspro_devinfo *dev_info = NULL;
1175 struct mspro_sys_info *sys_info = NULL;
1176 struct mspro_sys_attr *s_attr = NULL;
1177 int rc, disk_id;
1178 u64 limit = BLK_BOUNCE_HIGH;
1179 unsigned long capacity;
1180
1181 if (host->dev.dma_mask && *(host->dev.dma_mask))
1182 limit = *(host->dev.dma_mask);
1183
1184 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1185 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1186
1187 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1188 dev_info = s_attr->data;
1189 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1190 sys_info = s_attr->data;
1191 }
1192
1193 if (!dev_info || !sys_info)
1194 return -ENODEV;
1195
1196 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1197 msb->heads = be16_to_cpu(dev_info->heads);
1198 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1199
1200 msb->page_size = be16_to_cpu(sys_info->unit_size);
1201
1202 if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1203 return -ENOMEM;
1204
1205 mutex_lock(&mspro_block_disk_lock);
1206 rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1207 mutex_unlock(&mspro_block_disk_lock);
1208
1209 if (rc)
1210 return rc;
1211
1212 if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
1213 rc = -ENOSPC;
1214 goto out_release_id;
1215 }
1216
1217 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
1218 if (!msb->disk) {
1219 rc = -ENOMEM;
1220 goto out_release_id;
1221 }
1222
1223 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
1224 if (!msb->queue) {
1225 rc = -ENOMEM;
1226 goto out_put_disk;
1227 }
1228
1229 msb->queue->queuedata = card;
1230 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
1231
1232 blk_queue_bounce_limit(msb->queue, limit);
1233 blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1234 blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1235 blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1236 blk_queue_max_segment_size(msb->queue,
1237 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1238
1239 msb->disk->major = major;
1240 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1241 msb->disk->fops = &ms_block_bdops;
1242 msb->usage_count = 1;
1243 msb->disk->private_data = msb;
1244 msb->disk->queue = msb->queue;
1245 msb->disk->driverfs_dev = &card->dev;
1246
1247 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1248
1249 blk_queue_hardsect_size(msb->queue, msb->page_size);
1250
1251 capacity = be16_to_cpu(sys_info->user_block_count);
1252 capacity *= be16_to_cpu(sys_info->block_size);
1253 capacity *= msb->page_size >> 9;
1254 set_capacity(msb->disk, capacity);
1255 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1256
1257 add_disk(msb->disk);
1258 msb->active = 1;
1259 return 0;
1260
1261 out_put_disk:
1262 put_disk(msb->disk);
1263 out_release_id:
1264 mutex_lock(&mspro_block_disk_lock);
1265 idr_remove(&mspro_block_disk_idr, disk_id);
1266 mutex_unlock(&mspro_block_disk_lock);
1267 return rc;
1268 }
1269
1270 static void mspro_block_data_clear(struct mspro_block_data *msb)
1271 {
1272 int cnt;
1273 struct mspro_sys_attr *s_attr;
1274
1275 if (msb->attr_group.attrs) {
1276 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1277 s_attr = mspro_from_sysfs_attr(msb->attr_group
1278 .attrs[cnt]);
1279 kfree(s_attr->data);
1280 kfree(s_attr);
1281 }
1282 kfree(msb->attr_group.attrs);
1283 }
1284
1285 msb->card = NULL;
1286 }
1287
1288 static int mspro_block_check_card(struct memstick_dev *card)
1289 {
1290 struct mspro_block_data *msb = memstick_get_drvdata(card);
1291
1292 return (msb->active == 1);
1293 }
1294
1295 static int mspro_block_probe(struct memstick_dev *card)
1296 {
1297 struct mspro_block_data *msb;
1298 int rc = 0;
1299
1300 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1301 if (!msb)
1302 return -ENOMEM;
1303 memstick_set_drvdata(card, msb);
1304 msb->card = card;
1305 spin_lock_init(&msb->q_lock);
1306
1307 rc = mspro_block_init_card(card);
1308
1309 if (rc)
1310 goto out_free;
1311
1312 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1313 if (rc)
1314 goto out_free;
1315
1316 rc = mspro_block_init_disk(card);
1317 if (!rc) {
1318 card->check = mspro_block_check_card;
1319 card->stop = mspro_block_stop;
1320 card->start = mspro_block_start;
1321 return 0;
1322 }
1323
1324 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1325 out_free:
1326 memstick_set_drvdata(card, NULL);
1327 mspro_block_data_clear(msb);
1328 kfree(msb);
1329 return rc;
1330 }
1331
1332 static void mspro_block_remove(struct memstick_dev *card)
1333 {
1334 struct mspro_block_data *msb = memstick_get_drvdata(card);
1335 unsigned long flags;
1336
1337 del_gendisk(msb->disk);
1338 dev_dbg(&card->dev, "mspro block remove\n");
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 blk_cleanup_queue(msb->queue);
1345 msb->queue = NULL;
1346
1347 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1348
1349 mutex_lock(&mspro_block_disk_lock);
1350 mspro_block_data_clear(msb);
1351 mutex_unlock(&mspro_block_disk_lock);
1352
1353 mspro_block_disk_release(msb->disk);
1354 memstick_set_drvdata(card, NULL);
1355 }
1356
1357 #ifdef CONFIG_PM
1358
1359 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1360 {
1361 struct mspro_block_data *msb = memstick_get_drvdata(card);
1362 unsigned long flags;
1363
1364 spin_lock_irqsave(&msb->q_lock, flags);
1365 blk_stop_queue(msb->queue);
1366 msb->active = 0;
1367 spin_unlock_irqrestore(&msb->q_lock, flags);
1368
1369 return 0;
1370 }
1371
1372 static int mspro_block_resume(struct memstick_dev *card)
1373 {
1374 struct mspro_block_data *msb = memstick_get_drvdata(card);
1375 unsigned long flags;
1376 int rc = 0;
1377
1378 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1379
1380 struct mspro_block_data *new_msb;
1381 struct memstick_host *host = card->host;
1382 struct mspro_sys_attr *s_attr, *r_attr;
1383 unsigned char cnt;
1384
1385 mutex_lock(&host->lock);
1386 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1387 if (!new_msb) {
1388 rc = -ENOMEM;
1389 goto out_unlock;
1390 }
1391
1392 new_msb->card = card;
1393 memstick_set_drvdata(card, new_msb);
1394 if (mspro_block_init_card(card))
1395 goto out_free;
1396
1397 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1398 && msb->attr_group.attrs[cnt]; ++cnt) {
1399 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1400 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1401
1402 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1403 && r_attr->id == s_attr->id) {
1404 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1405 break;
1406
1407 msb->active = 1;
1408 break;
1409 }
1410 }
1411
1412 out_free:
1413 memstick_set_drvdata(card, msb);
1414 mspro_block_data_clear(new_msb);
1415 kfree(new_msb);
1416 out_unlock:
1417 mutex_unlock(&host->lock);
1418
1419 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1420
1421 spin_lock_irqsave(&msb->q_lock, flags);
1422 blk_start_queue(msb->queue);
1423 spin_unlock_irqrestore(&msb->q_lock, flags);
1424 return rc;
1425 }
1426
1427 #else
1428
1429 #define mspro_block_suspend NULL
1430 #define mspro_block_resume NULL
1431
1432 #endif /* CONFIG_PM */
1433
1434 static struct memstick_device_id mspro_block_id_tbl[] = {
1435 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1436 MEMSTICK_CLASS_DUO},
1437 {}
1438 };
1439
1440
1441 static struct memstick_driver mspro_block_driver = {
1442 .driver = {
1443 .name = DRIVER_NAME,
1444 .owner = THIS_MODULE
1445 },
1446 .id_table = mspro_block_id_tbl,
1447 .probe = mspro_block_probe,
1448 .remove = mspro_block_remove,
1449 .suspend = mspro_block_suspend,
1450 .resume = mspro_block_resume
1451 };
1452
1453 static int __init mspro_block_init(void)
1454 {
1455 int rc = -ENOMEM;
1456
1457 rc = register_blkdev(major, DRIVER_NAME);
1458 if (rc < 0) {
1459 printk(KERN_ERR DRIVER_NAME ": failed to register "
1460 "major %d, error %d\n", major, rc);
1461 return rc;
1462 }
1463 if (!major)
1464 major = rc;
1465
1466 rc = memstick_register_driver(&mspro_block_driver);
1467 if (rc)
1468 unregister_blkdev(major, DRIVER_NAME);
1469 return rc;
1470 }
1471
1472 static void __exit mspro_block_exit(void)
1473 {
1474 memstick_unregister_driver(&mspro_block_driver);
1475 unregister_blkdev(major, DRIVER_NAME);
1476 idr_destroy(&mspro_block_disk_idr);
1477 }
1478
1479 module_init(mspro_block_init);
1480 module_exit(mspro_block_exit);
1481
1482 MODULE_LICENSE("GPL");
1483 MODULE_AUTHOR("Alex Dubov");
1484 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1485 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git