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rescan_partitions(): make device capacity errors non-fatal
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / memstick / core / mspro_block.c
CommitLineData
baf8532a
AD		 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>
59367258 19#include <linux/delay.h>
baf8532a
AD		 20#include <linux/memstick.h>
21
22#define DRIVER_NAME "mspro_block"
baf8532a
AD		 23
24static int major;
25module_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
33enum {
34 MSPRO_BLOCK_ID_SYSINFO = 0x10,
35 MSPRO_BLOCK_ID_MODELNAME = 0x15,
36 MSPRO_BLOCK_ID_MBR = 0x20,
37 MSPRO_BLOCK_ID_PBR16 = 0x21,
38 MSPRO_BLOCK_ID_PBR32 = 0x22,
39 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
40 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
41 MSPRO_BLOCK_ID_DEVINFO = 0x30
42};
43
44struct mspro_sys_attr {
45 size_t size;
46 void *data;
47 unsigned char id;
48 char name[32];
49 struct device_attribute dev_attr;
50};
51
52struct mspro_attr_entry {
53 unsigned int address;
54 unsigned int size;
55 unsigned char id;
56 unsigned char reserved[3];
57} __attribute__((packed));
58
59struct mspro_attribute {
60 unsigned short signature;
61 unsigned short version;
62 unsigned char count;
63 unsigned char reserved[11];
64 struct mspro_attr_entry entries[];
65} __attribute__((packed));
66
67struct mspro_sys_info {
68 unsigned char class;
69 unsigned char reserved0;
70 unsigned short block_size;
71 unsigned short block_count;
72 unsigned short user_block_count;
73 unsigned short page_size;
74 unsigned char reserved1[2];
75 unsigned char assembly_date[8];
76 unsigned int serial_number;
77 unsigned char assembly_maker_code;
78 unsigned char assembly_model_code[3];
79 unsigned short memory_maker_code;
80 unsigned short memory_model_code;
81 unsigned char reserved2[4];
82 unsigned char vcc;
83 unsigned char vpp;
84 unsigned short controller_number;
85 unsigned short controller_function;
86 unsigned short start_sector;
87 unsigned short unit_size;
88 unsigned char ms_sub_class;
89 unsigned char reserved3[4];
90 unsigned char interface_type;
91 unsigned short controller_code;
92 unsigned char format_type;
93 unsigned char reserved4;
94 unsigned char device_type;
95 unsigned char reserved5[7];
96 unsigned char mspro_id[16];
97 unsigned char reserved6[16];
98} __attribute__((packed));
99
100struct mspro_mbr {
101 unsigned char boot_partition;
102 unsigned char start_head;
103 unsigned char start_sector;
104 unsigned char start_cylinder;
105 unsigned char partition_type;
106 unsigned char end_head;
107 unsigned char end_sector;
108 unsigned char end_cylinder;
109 unsigned int start_sectors;
110 unsigned int sectors_per_partition;
111} __attribute__((packed));
112
efb2742e
AD		 113struct mspro_specfile {
114 char name[8];
115 char ext[3];
116 unsigned char attr;
117 unsigned char reserved[10];
118 unsigned short time;
119 unsigned short date;
120 unsigned short cluster;
121 unsigned int size;
122} __attribute__((packed));
123
baf8532a
AD		 124struct mspro_devinfo {
125 unsigned short cylinders;
126 unsigned short heads;
127 unsigned short bytes_per_track;
128 unsigned short bytes_per_sector;
129 unsigned short sectors_per_track;
130 unsigned char reserved[6];
131} __attribute__((packed));
132
133struct mspro_block_data {
134 struct memstick_dev *card;
135 unsigned int usage_count;
ead70773 136 unsigned int caps;
baf8532a
AD		 137 struct gendisk *disk;
138 struct request_queue *queue;
f1d82698 139 struct request *block_req;
baf8532a 140 spinlock_t q_lock;
baf8532a
AD		 141
142 unsigned short page_size;
143 unsigned short cylinders;
144 unsigned short heads;
145 unsigned short sectors_per_track;
146
147 unsigned char system;
148 unsigned char read_only:1,
f1d82698 149 eject:1,
baf8532a 150 has_request:1,
f1d82698
AD		 151 data_dir:1,
152 active:1;
baf8532a
AD		 153 unsigned char transfer_cmd;
154
155 int (*mrq_handler)(struct memstick_dev *card,
156 struct memstick_request **mrq);
157
158 struct attribute_group attr_group;
159
160 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
161 unsigned int seg_count;
162 unsigned int current_seg;
f1d82698 163 unsigned int current_page;
baf8532a
AD		 164};
165
166static DEFINE_IDR(mspro_block_disk_idr);
167static DEFINE_MUTEX(mspro_block_disk_lock);
168
f1d82698
AD		 169static int mspro_block_complete_req(struct memstick_dev *card, int error);
170
baf8532a
AD		 171/*** Block device ***/
172
173static int mspro_block_bd_open(struct inode *inode, struct file *filp)
174{
175 struct gendisk *disk = inode->i_bdev->bd_disk;
176 struct mspro_block_data *msb = disk->private_data;
177 int rc = -ENXIO;
178
179 mutex_lock(&mspro_block_disk_lock);
180
181 if (msb && msb->card) {
182 msb->usage_count++;
183 if ((filp->f_mode & FMODE_WRITE) && msb->read_only)
184 rc = -EROFS;
185 else
186 rc = 0;
187 }
188
189 mutex_unlock(&mspro_block_disk_lock);
190
191 return rc;
192}
193
194
195static int mspro_block_disk_release(struct gendisk *disk)
196{
197 struct mspro_block_data *msb = disk->private_data;
198 int disk_id = disk->first_minor >> MEMSTICK_PART_SHIFT;
199
200 mutex_lock(&mspro_block_disk_lock);
201
f1d82698
AD		 202 if (msb) {
203 if (msb->usage_count)
204 msb->usage_count--;
205
baf8532a
AD		 206 if (!msb->usage_count) {
207 kfree(msb);
208 disk->private_data = NULL;
209 idr_remove(&mspro_block_disk_idr, disk_id);
210 put_disk(disk);
211 }
212 }
213
214 mutex_unlock(&mspro_block_disk_lock);
215
216 return 0;
217}
218
219static int mspro_block_bd_release(struct inode *inode, struct file *filp)
220{
221 struct gendisk *disk = inode->i_bdev->bd_disk;
222 return mspro_block_disk_release(disk);
223}
224
225static int mspro_block_bd_getgeo(struct block_device *bdev,
226 struct hd_geometry *geo)
227{
228 struct mspro_block_data *msb = bdev->bd_disk->private_data;
229
230 geo->heads = msb->heads;
231 geo->sectors = msb->sectors_per_track;
232 geo->cylinders = msb->cylinders;
233
234 return 0;
235}
236
237static struct block_device_operations ms_block_bdops = {
238 .open = mspro_block_bd_open,
239 .release = mspro_block_bd_release,
240 .getgeo = mspro_block_bd_getgeo,
241 .owner = THIS_MODULE
242};
243
244/*** Information ***/
245
246static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
247{
248 struct device_attribute *dev_attr
249 = container_of(attr, struct device_attribute, attr);
250 return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
251}
252
253static const char *mspro_block_attr_name(unsigned char tag)
254{
255 switch (tag) {
256 case MSPRO_BLOCK_ID_SYSINFO:
257 return "attr_sysinfo";
258 case MSPRO_BLOCK_ID_MODELNAME:
259 return "attr_modelname";
260 case MSPRO_BLOCK_ID_MBR:
261 return "attr_mbr";
262 case MSPRO_BLOCK_ID_PBR16:
263 return "attr_pbr16";
264 case MSPRO_BLOCK_ID_PBR32:
265 return "attr_pbr32";
266 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
267 return "attr_specfilevalues1";
268 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
269 return "attr_specfilevalues2";
270 case MSPRO_BLOCK_ID_DEVINFO:
271 return "attr_devinfo";
272 default:
273 return NULL;
274 };
275}
276
277typedef ssize_t (*sysfs_show_t)(struct device *dev,
278 struct device_attribute *attr,
279 char *buffer);
280
281static ssize_t mspro_block_attr_show_default(struct device *dev,
282 struct device_attribute *attr,
283 char *buffer)
284{
285 struct mspro_sys_attr *s_attr = container_of(attr,
286 struct mspro_sys_attr,
287 dev_attr);
288
289 ssize_t cnt, rc = 0;
290
291 for (cnt = 0; cnt < s_attr->size; cnt++) {
292 if (cnt && !(cnt % 16)) {
293 if (PAGE_SIZE - rc)
294 buffer[rc++] = '\n';
295 }
296
297 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
298 ((unsigned char *)s_attr->data)[cnt]);
299 }
300 return rc;
301}
302
303static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
304 struct device_attribute *attr,
305 char *buffer)
306{
307 struct mspro_sys_attr *x_attr = container_of(attr,
308 struct mspro_sys_attr,
309 dev_attr);
310 struct mspro_sys_info *x_sys = x_attr->data;
311 ssize_t rc = 0;
251cc9b9
AD		 312 int date_tz = 0, date_tz_f = 0;
313
314 if (x_sys->assembly_date[0] > 0x80U) {
315 date_tz = (~x_sys->assembly_date[0]) + 1;
316 date_tz_f = date_tz & 3;
317 date_tz >>= 2;
318 date_tz = -date_tz;
319 date_tz_f *= 15;
320 } else if (x_sys->assembly_date[0] < 0x80U) {
321 date_tz = x_sys->assembly_date[0];
322 date_tz_f = date_tz & 3;
323 date_tz >>= 2;
324 date_tz_f *= 15;
325 }
baf8532a
AD		 326
327 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
328 x_sys->class);
329 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
330 be16_to_cpu(x_sys->block_size));
331 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
332 be16_to_cpu(x_sys->block_count));
333 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
334 be16_to_cpu(x_sys->user_block_count));
335 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
336 be16_to_cpu(x_sys->page_size));
337 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
251cc9b9
AD		 338 "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
339 date_tz, date_tz_f,
baf8532a
AD		 340 be16_to_cpu(*(unsigned short *)
341 &x_sys->assembly_date[1]),
342 x_sys->assembly_date[3], x_sys->assembly_date[4],
343 x_sys->assembly_date[5], x_sys->assembly_date[6],
344 x_sys->assembly_date[7]);
345 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
346 be32_to_cpu(x_sys->serial_number));
347 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
348 "assembly maker code: %x\n",
349 x_sys->assembly_maker_code);
350 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
351 "%02x%02x%02x\n", x_sys->assembly_model_code[0],
352 x_sys->assembly_model_code[1],
353 x_sys->assembly_model_code[2]);
354 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
355 be16_to_cpu(x_sys->memory_maker_code));
356 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
357 be16_to_cpu(x_sys->memory_model_code));
358 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
359 x_sys->vcc);
360 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
361 x_sys->vpp);
362 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
363 be16_to_cpu(x_sys->controller_number));
364 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
365 "controller function: %x\n",
366 be16_to_cpu(x_sys->controller_function));
367 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
368 be16_to_cpu(x_sys->start_sector));
369 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
370 be16_to_cpu(x_sys->unit_size));
371 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
372 x_sys->ms_sub_class);
373 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
374 x_sys->interface_type);
375 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
376 be16_to_cpu(x_sys->controller_code));
377 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
378 x_sys->format_type);
379 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
380 x_sys->device_type);
381 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
382 x_sys->mspro_id);
383 return rc;
384}
385
386static ssize_t mspro_block_attr_show_modelname(struct device *dev,
387 struct device_attribute *attr,
388 char *buffer)
389{
390 struct mspro_sys_attr *s_attr = container_of(attr,
391 struct mspro_sys_attr,
392 dev_attr);
393
394 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
395}
396
397static ssize_t mspro_block_attr_show_mbr(struct device *dev,
398 struct device_attribute *attr,
399 char *buffer)
400{
401 struct mspro_sys_attr *x_attr = container_of(attr,
402 struct mspro_sys_attr,
403 dev_attr);
404 struct mspro_mbr *x_mbr = x_attr->data;
405 ssize_t rc = 0;
406
407 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
408 x_mbr->boot_partition);
409 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
410 x_mbr->start_head);
411 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
412 x_mbr->start_sector);
413 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
414 x_mbr->start_cylinder);
415 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
416 x_mbr->partition_type);
417 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
418 x_mbr->end_head);
419 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
420 x_mbr->end_sector);
421 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
422 x_mbr->end_cylinder);
423 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
424 x_mbr->start_sectors);
425 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
426 "sectors per partition: %x\n",
427 x_mbr->sectors_per_partition);
428 return rc;
429}
430
efb2742e
AD		 431static ssize_t mspro_block_attr_show_specfile(struct device *dev,
432 struct device_attribute *attr,
433 char *buffer)
434{
435 struct mspro_sys_attr *x_attr = container_of(attr,
436 struct mspro_sys_attr,
437 dev_attr);
438 struct mspro_specfile *x_spfile = x_attr->data;
439 char name[9], ext[4];
440 ssize_t rc = 0;
441
442 memcpy(name, x_spfile->name, 8);
443 name[8] = 0;
444 memcpy(ext, x_spfile->ext, 3);
445 ext[3] = 0;
446
447 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
448 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
449 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
450 x_spfile->attr);
451 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
452 x_spfile->time >> 11,
453 (x_spfile->time >> 5) & 0x3f,
454 (x_spfile->time & 0x1f) * 2);
455 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
456 (x_spfile->date >> 9) + 1980,
457 (x_spfile->date >> 5) & 0xf,
458 x_spfile->date & 0x1f);
459 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
460 x_spfile->cluster);
461 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
462 x_spfile->size);
463 return rc;
464}
465
baf8532a
AD		 466static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
467 struct device_attribute *attr,
468 char *buffer)
469{
470 struct mspro_sys_attr *x_attr = container_of(attr,
471 struct mspro_sys_attr,
472 dev_attr);
473 struct mspro_devinfo *x_devinfo = x_attr->data;
474 ssize_t rc = 0;
475
476 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
477 be16_to_cpu(x_devinfo->cylinders));
478 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
479 be16_to_cpu(x_devinfo->heads));
480 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
481 be16_to_cpu(x_devinfo->bytes_per_track));
482 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
483 be16_to_cpu(x_devinfo->bytes_per_sector));
484 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
485 be16_to_cpu(x_devinfo->sectors_per_track));
486 return rc;
487}
488
489static sysfs_show_t mspro_block_attr_show(unsigned char tag)
490{
491 switch (tag) {
492 case MSPRO_BLOCK_ID_SYSINFO:
493 return mspro_block_attr_show_sysinfo;
494 case MSPRO_BLOCK_ID_MODELNAME:
495 return mspro_block_attr_show_modelname;
496 case MSPRO_BLOCK_ID_MBR:
497 return mspro_block_attr_show_mbr;
efb2742e
AD		 498 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
499 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
500 return mspro_block_attr_show_specfile;
baf8532a
AD		 501 case MSPRO_BLOCK_ID_DEVINFO:
502 return mspro_block_attr_show_devinfo;
503 default:
504 return mspro_block_attr_show_default;
505 }
506}
507
508/*** Protocol handlers ***/
509
510/*
511 * Functions prefixed with "h_" are protocol callbacks. They can be called from
512 * interrupt context. Return value of 0 means that request processing is still
513 * ongoing, while special error value of -EAGAIN means that current request is
514 * finished (and request processor should come back some time later).
515 */
516
517static int h_mspro_block_req_init(struct memstick_dev *card,
518 struct memstick_request **mrq)
519{
520 struct mspro_block_data *msb = memstick_get_drvdata(card);
521
522 *mrq = &card->current_mrq;
523 card->next_request = msb->mrq_handler;
524 return 0;
525}
526
527static int h_mspro_block_default(struct memstick_dev *card,
528 struct memstick_request **mrq)
529{
f1d82698
AD		 530 return mspro_block_complete_req(card, (*mrq)->error);
531}
532
533static int h_mspro_block_default_bad(struct memstick_dev *card,
534 struct memstick_request **mrq)
535{
536 return -ENXIO;
baf8532a
AD		 537}
538
539static int h_mspro_block_get_ro(struct memstick_dev *card,
540 struct memstick_request **mrq)
541{
542 struct mspro_block_data *msb = memstick_get_drvdata(card);
543
f1d82698
AD		 544 if (!(*mrq)->error) {
545 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
546 & MEMSTICK_STATUS0_WP)
547 msb->read_only = 1;
548 else
549 msb->read_only = 0;
baf8532a
AD		 550 }
551
f1d82698 552 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 553}
554
555static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
556 struct memstick_request **mrq)
557{
baf8532a
AD		 558 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
559
f1d82698
AD		 560 if (!(*mrq)->error) {
561 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
562 (*mrq)->error = -EFAULT;
563 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
564 return 0;
baf8532a
AD		 565 }
566
f1d82698 567 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 568}
569
570static int h_mspro_block_transfer_data(struct memstick_dev *card,
571 struct memstick_request **mrq)
572{
baf8532a
AD		 573 struct mspro_block_data *msb = memstick_get_drvdata(card);
574 unsigned char t_val = 0;
575 struct scatterlist t_sg = { 0 };
576 size_t t_offset;
577
f1d82698
AD		 578 if ((*mrq)->error)
579 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 580
581 switch ((*mrq)->tpc) {
582 case MS_TPC_WRITE_REG:
583 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
ead70773 584 (*mrq)->need_card_int = 1;
baf8532a
AD		 585 return 0;
586 case MS_TPC_SET_CMD:
587 t_val = (*mrq)->int_reg;
588 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
ead70773 589 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
baf8532a
AD		 590 goto has_int_reg;
591 return 0;
592 case MS_TPC_GET_INT:
593 t_val = (*mrq)->data[0];
594has_int_reg:
595 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
596 t_val = MSPRO_CMD_STOP;
597 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
598 card->next_request = h_mspro_block_default;
599 return 0;
600 }
601
602 if (msb->current_page
603 == (msb->req_sg[msb->current_seg].length
604 / msb->page_size)) {
605 msb->current_page = 0;
606 msb->current_seg++;
607
608 if (msb->current_seg == msb->seg_count) {
609 if (t_val & MEMSTICK_INT_CED) {
f1d82698
AD		 610 return mspro_block_complete_req(card,
611 0);
baf8532a
AD		 612 } else {
613 card->next_request
614 = h_mspro_block_wait_for_ced;
615 memstick_init_req(*mrq, MS_TPC_GET_INT,
616 NULL, 1);
617 return 0;
618 }
619 }
620 }
621
622 if (!(t_val & MEMSTICK_INT_BREQ)) {
623 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
624 return 0;
625 }
626
627 t_offset = msb->req_sg[msb->current_seg].offset;
628 t_offset += msb->current_page * msb->page_size;
629
630 sg_set_page(&t_sg,
631 nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
632 t_offset >> PAGE_SHIFT),
633 msb->page_size, offset_in_page(t_offset));
634
635 memstick_init_req_sg(*mrq, msb->data_dir == READ
636 ? MS_TPC_READ_LONG_DATA
637 : MS_TPC_WRITE_LONG_DATA,
638 &t_sg);
ead70773 639 (*mrq)->need_card_int = 1;
baf8532a
AD		 640 return 0;
641 case MS_TPC_READ_LONG_DATA:
642 case MS_TPC_WRITE_LONG_DATA:
643 msb->current_page++;
ead70773 644 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
baf8532a
AD		 645 t_val = (*mrq)->int_reg;
646 goto has_int_reg;
647 } else {
648 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
649 return 0;
650 }
651
652 default:
653 BUG();
654 }
655}
656
657/*** Data transfer ***/
658
f1d82698 659static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
baf8532a
AD		 660{
661 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a 662 sector_t t_sec;
f1d82698
AD		 663 unsigned int count;
664 struct mspro_param_register param;
baf8532a 665
f1d82698
AD		 666try_again:
667 while (chunk) {
668 msb->current_page = 0;
baf8532a 669 msb->current_seg = 0;
f1d82698
AD		 670 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
671 msb->block_req,
672 msb->req_sg);
baf8532a 673
f1d82698
AD		 674 if (!msb->seg_count) {
675 chunk = __blk_end_request(msb->block_req, -ENOMEM,
676 blk_rq_cur_bytes(msb->block_req));
677 continue;
678 }
baf8532a 679
f1d82698
AD		 680 t_sec = msb->block_req->sector << 9;
681 sector_div(t_sec, msb->page_size);
baf8532a 682
f1d82698
AD		 683 count = msb->block_req->nr_sectors << 9;
684 count /= msb->page_size;
baf8532a 685
f1d82698
AD		 686 param.system = msb->system;
687 param.data_count = cpu_to_be16(count);
688 param.data_address = cpu_to_be32((uint32_t)t_sec);
689 param.tpc_param = 0;
690
691 msb->data_dir = rq_data_dir(msb->block_req);
692 msb->transfer_cmd = msb->data_dir == READ
693 ? MSPRO_CMD_READ_DATA
694 : MSPRO_CMD_WRITE_DATA;
695
696 dev_dbg(&card->dev, "data transfer: cmd %x, "
697 "lba %x, count %x\n", msb->transfer_cmd,
698 be32_to_cpu(param.data_address), count);
699
700 card->next_request = h_mspro_block_req_init;
701 msb->mrq_handler = h_mspro_block_transfer_data;
702 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
703 &param, sizeof(param));
704 memstick_new_req(card->host);
705 return 0;
706 }
707
708 dev_dbg(&card->dev, "elv_next\n");
709 msb->block_req = elv_next_request(msb->queue);
710 if (!msb->block_req) {
711 dev_dbg(&card->dev, "issue end\n");
712 return -EAGAIN;
713 }
714
715 dev_dbg(&card->dev, "trying again\n");
716 chunk = 1;
717 goto try_again;
baf8532a
AD		 718}
719
f1d82698 720static int mspro_block_complete_req(struct memstick_dev *card, int error)
baf8532a 721{
f1d82698
AD		 722 struct mspro_block_data *msb = memstick_get_drvdata(card);
723 int chunk, cnt;
724 unsigned int t_len = 0;
baf8532a
AD		 725 unsigned long flags;
726
727 spin_lock_irqsave(&msb->q_lock, flags);
f1d82698
AD		 728 dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
729 error);
730
731 if (msb->has_request) {
732 /* Nothing to do - not really an error */
733 if (error == -EAGAIN)
734 error = 0;
735
736 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
737 if (msb->data_dir == READ) {
738 for (cnt = 0; cnt < msb->current_seg; cnt++)
739 t_len += msb->req_sg[cnt].length
740 / msb->page_size;
741
742 if (msb->current_page)
743 t_len += msb->current_page - 1;
744
745 t_len *= msb->page_size;
746 }
747 } else
748 t_len = msb->block_req->nr_sectors << 9;
749
750 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
751
752 if (error && !t_len)
753 t_len = blk_rq_cur_bytes(msb->block_req);
754
755 chunk = __blk_end_request(msb->block_req, error, t_len);
756
757 error = mspro_block_issue_req(card, chunk);
758
759 if (!error)
760 goto out;
761 else
762 msb->has_request = 0;
763 } else {
764 if (!error)
765 error = -EAGAIN;
766 }
767
768 card->next_request = h_mspro_block_default_bad;
769 complete_all(&card->mrq_complete);
770out:
baf8532a 771 spin_unlock_irqrestore(&msb->q_lock, flags);
f1d82698 772 return error;
baf8532a
AD		 773}
774
17017d8d
AD		 775static void mspro_block_stop(struct memstick_dev *card)
776{
777 struct mspro_block_data *msb = memstick_get_drvdata(card);
778 int rc = 0;
779 unsigned long flags;
780
781 while (1) {
782 spin_lock_irqsave(&msb->q_lock, flags);
783 if (!msb->has_request) {
784 blk_stop_queue(msb->queue);
785 rc = 1;
786 }
787 spin_unlock_irqrestore(&msb->q_lock, flags);
788
789 if (rc)
790 break;
791
792 wait_for_completion(&card->mrq_complete);
793 }
794}
795
796static void mspro_block_start(struct memstick_dev *card)
797{
798 struct mspro_block_data *msb = memstick_get_drvdata(card);
799 unsigned long flags;
800
801 spin_lock_irqsave(&msb->q_lock, flags);
802 blk_start_queue(msb->queue);
803 spin_unlock_irqrestore(&msb->q_lock, flags);
804}
805
f1d82698 806static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
baf8532a 807{
f1d82698
AD		 808 if (!blk_fs_request(req) && !blk_pc_request(req)) {
809 blk_dump_rq_flags(req, "MSPro unsupported request");
810 return BLKPREP_KILL;
811 }
baf8532a 812
f1d82698 813 req->cmd_flags |= REQ_DONTPREP;
baf8532a 814
f1d82698 815 return BLKPREP_OK;
baf8532a
AD		 816}
817
f1d82698 818static void mspro_block_submit_req(struct request_queue *q)
baf8532a
AD		 819{
820 struct memstick_dev *card = q->queuedata;
821 struct mspro_block_data *msb = memstick_get_drvdata(card);
822 struct request *req = NULL;
823
f1d82698
AD		 824 if (msb->has_request)
825 return;
826
827 if (msb->eject) {
baf8532a
AD		 828 while ((req = elv_next_request(q)) != NULL)
829 end_queued_request(req, -ENODEV);
f1d82698
AD		 830
831 return;
baf8532a 832 }
f1d82698
AD		 833
834 msb->has_request = 1;
835 if (mspro_block_issue_req(card, 0))
836 msb->has_request = 0;
baf8532a
AD		 837}
838
839/*** Initialization ***/
840
841static int mspro_block_wait_for_ced(struct memstick_dev *card)
842{
843 struct mspro_block_data *msb = memstick_get_drvdata(card);
844
845 card->next_request = h_mspro_block_req_init;
846 msb->mrq_handler = h_mspro_block_wait_for_ced;
847 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
848 memstick_new_req(card->host);
849 wait_for_completion(&card->mrq_complete);
850 return card->current_mrq.error;
851}
852
962ee1b1
AD		 853static int mspro_block_set_interface(struct memstick_dev *card,
854 unsigned char sys_reg)
baf8532a
AD		 855{
856 struct memstick_host *host = card->host;
857 struct mspro_block_data *msb = memstick_get_drvdata(card);
858 struct mspro_param_register param = {
962ee1b1 859 .system = sys_reg,
baf8532a
AD		 860 .data_count = 0,
861 .data_address = 0,
e1f19995 862 .tpc_param = 0
baf8532a
AD		 863 };
864
865 card->next_request = h_mspro_block_req_init;
866 msb->mrq_handler = h_mspro_block_default;
867 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
868 sizeof(param));
869 memstick_new_req(host);
870 wait_for_completion(&card->mrq_complete);
962ee1b1
AD		 871 return card->current_mrq.error;
872}
873
874static int mspro_block_switch_interface(struct memstick_dev *card)
875{
876 struct memstick_host *host = card->host;
877 struct mspro_block_data *msb = memstick_get_drvdata(card);
878 int rc = 0;
879
880 if (msb->caps & MEMSTICK_CAP_PAR4)
881 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
882 else
883 return 0;
884
885 if (rc) {
886 printk(KERN_WARNING
887 "%s: could not switch to 4-bit mode, error %d\n",
888 card->dev.bus_id, rc);
889 return 0;
890 }
baf8532a 891
e1f19995
AD		 892 msb->system = MEMSTICK_SYS_PAR4;
893 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
962ee1b1
AD		 894 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
895 card->dev.bus_id);
896
897 if (msb->caps & MEMSTICK_CAP_PAR8) {
898 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
899
900 if (!rc) {
901 msb->system = MEMSTICK_SYS_PAR8;
902 host->set_param(host, MEMSTICK_INTERFACE,
903 MEMSTICK_PAR8);
904 printk(KERN_INFO
905 "%s: switching to 8-bit parallel mode\n",
906 card->dev.bus_id);
907 } else
908 printk(KERN_WARNING
909 "%s: could not switch to 8-bit mode, error %d\n",
910 card->dev.bus_id, rc);
911 }
baf8532a
AD		 912
913 card->next_request = h_mspro_block_req_init;
914 msb->mrq_handler = h_mspro_block_default;
915 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
916 memstick_new_req(card->host);
917 wait_for_completion(&card->mrq_complete);
962ee1b1 918 rc = card->current_mrq.error;
baf8532a 919
962ee1b1
AD		 920 if (rc) {
921 printk(KERN_WARNING
922 "%s: interface error, trying to fall back to serial\n",
923 card->dev.bus_id);
59367258
AD		 924 msb->system = MEMSTICK_SYS_SERIAL;
925 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
962ee1b1 926 msleep(10);
59367258 927 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
baf8532a 928 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
59367258 929
962ee1b1
AD		 930 rc = memstick_set_rw_addr(card);
931 if (!rc)
932 rc = mspro_block_set_interface(card, msb->system);
baf8532a 933 }
962ee1b1 934 return rc;
baf8532a
AD		 935}
936
937/* Memory allocated for attributes by this function should be freed by
938 * mspro_block_data_clear, no matter if the initialization process succeded
939 * or failed.
940 */
941static int mspro_block_read_attributes(struct memstick_dev *card)
942{
943 struct mspro_block_data *msb = memstick_get_drvdata(card);
944 struct mspro_param_register param = {
945 .system = msb->system,
946 .data_count = cpu_to_be16(1),
947 .data_address = 0,
e1f19995 948 .tpc_param = 0
baf8532a
AD		 949 };
950 struct mspro_attribute *attr = NULL;
951 struct mspro_sys_attr *s_attr = NULL;
952 unsigned char *buffer = NULL;
953 int cnt, rc, attr_count;
954 unsigned int addr;
955 unsigned short page_count;
956
957 attr = kmalloc(msb->page_size, GFP_KERNEL);
958 if (!attr)
959 return -ENOMEM;
960
961 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
962 msb->seg_count = 1;
963 msb->current_seg = 0;
964 msb->current_page = 0;
965 msb->data_dir = READ;
966 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
967
968 card->next_request = h_mspro_block_req_init;
969 msb->mrq_handler = h_mspro_block_transfer_data;
970 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
971 sizeof(param));
972 memstick_new_req(card->host);
973 wait_for_completion(&card->mrq_complete);
974 if (card->current_mrq.error) {
975 rc = card->current_mrq.error;
976 goto out_free_attr;
977 }
978
979 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
980 printk(KERN_ERR "%s: unrecognized device signature %x\n",
981 card->dev.bus_id, be16_to_cpu(attr->signature));
982 rc = -ENODEV;
983 goto out_free_attr;
984 }
985
986 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
987 printk(KERN_WARNING "%s: way too many attribute entries\n",
988 card->dev.bus_id);
989 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
990 } else
991 attr_count = attr->count;
992
993 msb->attr_group.attrs = kzalloc((attr_count + 1)
994 * sizeof(struct attribute),
995 GFP_KERNEL);
996 if (!msb->attr_group.attrs) {
997 rc = -ENOMEM;
998 goto out_free_attr;
999 }
1000 msb->attr_group.name = "media_attributes";
1001
1002 buffer = kmalloc(msb->page_size, GFP_KERNEL);
1003 if (!buffer) {
1004 rc = -ENOMEM;
1005 goto out_free_attr;
1006 }
1007 memcpy(buffer, (char *)attr, msb->page_size);
1008 page_count = 1;
1009
1010 for (cnt = 0; cnt < attr_count; ++cnt) {
1011 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1012 if (!s_attr) {
1013 rc = -ENOMEM;
1014 goto out_free_buffer;
1015 }
1016
1017 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1018 addr = be32_to_cpu(attr->entries[cnt].address);
1019 rc = be32_to_cpu(attr->entries[cnt].size);
1020 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1021 "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
1022 s_attr->id = attr->entries[cnt].id;
1023 if (mspro_block_attr_name(s_attr->id))
1024 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1025 mspro_block_attr_name(attr->entries[cnt].id));
1026 else
1027 snprintf(s_attr->name, sizeof(s_attr->name),
1028 "attr_x%02x", attr->entries[cnt].id);
1029
1030 s_attr->dev_attr.attr.name = s_attr->name;
1031 s_attr->dev_attr.attr.mode = S_IRUGO;
1032 s_attr->dev_attr.attr.owner = THIS_MODULE;
1033 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1034
1035 if (!rc)
1036 continue;
1037
1038 s_attr->size = rc;
1039 s_attr->data = kmalloc(rc, GFP_KERNEL);
1040 if (!s_attr->data) {
1041 rc = -ENOMEM;
1042 goto out_free_buffer;
1043 }
1044
1045 if (((addr / msb->page_size)
1046 == be32_to_cpu(param.data_address))
1047 && (((addr + rc - 1) / msb->page_size)
1048 == be32_to_cpu(param.data_address))) {
1049 memcpy(s_attr->data, buffer + addr % msb->page_size,
1050 rc);
1051 continue;
1052 }
1053
1054 if (page_count <= (rc / msb->page_size)) {
1055 kfree(buffer);
1056 page_count = (rc / msb->page_size) + 1;
1057 buffer = kmalloc(page_count * msb->page_size,
1058 GFP_KERNEL);
1059 if (!buffer) {
1060 rc = -ENOMEM;
1061 goto out_free_attr;
1062 }
1063 }
1064
1065 param.system = msb->system;
1066 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
1067 param.data_address = cpu_to_be32(addr / msb->page_size);
e1f19995 1068 param.tpc_param = 0;
baf8532a
AD		 1069
1070 sg_init_one(&msb->req_sg[0], buffer,
1071 be16_to_cpu(param.data_count) * msb->page_size);
1072 msb->seg_count = 1;
1073 msb->current_seg = 0;
1074 msb->current_page = 0;
1075 msb->data_dir = READ;
1076 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1077
1078 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
1079 be32_to_cpu(param.data_address),
1080 be16_to_cpu(param.data_count));
1081
1082 card->next_request = h_mspro_block_req_init;
1083 msb->mrq_handler = h_mspro_block_transfer_data;
1084 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
1085 (char *)&param, sizeof(param));
1086 memstick_new_req(card->host);
1087 wait_for_completion(&card->mrq_complete);
1088 if (card->current_mrq.error) {
1089 rc = card->current_mrq.error;
1090 goto out_free_buffer;
1091 }
1092
1093 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
1094 }
1095
1096 rc = 0;
1097out_free_buffer:
1098 kfree(buffer);
1099out_free_attr:
1100 kfree(attr);
1101 return rc;
1102}
1103
1104static int mspro_block_init_card(struct memstick_dev *card)
1105{
1106 struct mspro_block_data *msb = memstick_get_drvdata(card);
1107 struct memstick_host *host = card->host;
1108 int rc = 0;
1109
e1f19995 1110 msb->system = MEMSTICK_SYS_SERIAL;
baf8532a
AD		 1111 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1112 card->reg_addr.r_length = sizeof(struct ms_status_register);
1113 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1114 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1115
1116 if (memstick_set_rw_addr(card))
1117 return -EIO;
1118
ead70773 1119 msb->caps = host->caps;
962ee1b1
AD		 1120 rc = mspro_block_switch_interface(card);
1121 if (rc)
1122 return rc;
baf8532a 1123
962ee1b1 1124 msleep(200);
baf8532a
AD		 1125 rc = mspro_block_wait_for_ced(card);
1126 if (rc)
1127 return rc;
1128 dev_dbg(&card->dev, "card activated\n");
ead70773
AD		 1129 if (msb->system != MEMSTICK_SYS_SERIAL)
1130 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
baf8532a
AD		 1131
1132 card->next_request = h_mspro_block_req_init;
1133 msb->mrq_handler = h_mspro_block_get_ro;
1134 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1135 sizeof(struct ms_status_register));
1136 memstick_new_req(card->host);
1137 wait_for_completion(&card->mrq_complete);
1138 if (card->current_mrq.error)
1139 return card->current_mrq.error;
1140
1141 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1142
1143 msb->page_size = 512;
1144 rc = mspro_block_read_attributes(card);
1145 if (rc)
1146 return rc;
1147
1148 dev_dbg(&card->dev, "attributes loaded\n");
1149 return 0;
1150
1151}
1152
1153static int mspro_block_init_disk(struct memstick_dev *card)
1154{
1155 struct mspro_block_data *msb = memstick_get_drvdata(card);
1156 struct memstick_host *host = card->host;
1157 struct mspro_devinfo *dev_info = NULL;
1158 struct mspro_sys_info *sys_info = NULL;
1159 struct mspro_sys_attr *s_attr = NULL;
1160 int rc, disk_id;
1161 u64 limit = BLK_BOUNCE_HIGH;
1162 unsigned long capacity;
1163
c4c66cf1
GKH		 1164 if (host->dev.dma_mask && *(host->dev.dma_mask))
1165 limit = *(host->dev.dma_mask);
baf8532a
AD		 1166
1167 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1168 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1169
1170 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1171 dev_info = s_attr->data;
1172 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1173 sys_info = s_attr->data;
1174 }
1175
1176 if (!dev_info || !sys_info)
1177 return -ENODEV;
1178
1179 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1180 msb->heads = be16_to_cpu(dev_info->heads);
1181 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1182
1183 msb->page_size = be16_to_cpu(sys_info->unit_size);
1184
1185 if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1186 return -ENOMEM;
1187
1188 mutex_lock(&mspro_block_disk_lock);
1189 rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1190 mutex_unlock(&mspro_block_disk_lock);
1191
1192 if (rc)
1193 return rc;
1194
1195 if ((disk_id << MEMSTICK_PART_SHIFT) > 255) {
1196 rc = -ENOSPC;
1197 goto out_release_id;
1198 }
1199
1200 msb->disk = alloc_disk(1 << MEMSTICK_PART_SHIFT);
1201 if (!msb->disk) {
1202 rc = -ENOMEM;
1203 goto out_release_id;
1204 }
1205
f1d82698 1206 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
baf8532a
AD		 1207 if (!msb->queue) {
1208 rc = -ENOMEM;
1209 goto out_put_disk;
1210 }
1211
1212 msb->queue->queuedata = card;
f1d82698 1213 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
baf8532a
AD		 1214
1215 blk_queue_bounce_limit(msb->queue, limit);
1216 blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1217 blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1218 blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1219 blk_queue_max_segment_size(msb->queue,
1220 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1221
1222 msb->disk->major = major;
1223 msb->disk->first_minor = disk_id << MEMSTICK_PART_SHIFT;
1224 msb->disk->fops = &ms_block_bdops;
1225 msb->usage_count = 1;
1226 msb->disk->private_data = msb;
1227 msb->disk->queue = msb->queue;
1228 msb->disk->driverfs_dev = &card->dev;
1229
1230 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1231
1232 blk_queue_hardsect_size(msb->queue, msb->page_size);
1233
1234 capacity = be16_to_cpu(sys_info->user_block_count);
1235 capacity *= be16_to_cpu(sys_info->block_size);
1236 capacity *= msb->page_size >> 9;
1237 set_capacity(msb->disk, capacity);
1238 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
baf8532a 1239
baf8532a 1240 add_disk(msb->disk);
baf8532a
AD		 1241 msb->active = 1;
1242 return 0;
1243
1244out_put_disk:
1245 put_disk(msb->disk);
1246out_release_id:
1247 mutex_lock(&mspro_block_disk_lock);
1248 idr_remove(&mspro_block_disk_idr, disk_id);
1249 mutex_unlock(&mspro_block_disk_lock);
1250 return rc;
1251}
1252
1253static void mspro_block_data_clear(struct mspro_block_data *msb)
1254{
1255 int cnt;
1256 struct mspro_sys_attr *s_attr;
1257
1258 if (msb->attr_group.attrs) {
1259 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1260 s_attr = mspro_from_sysfs_attr(msb->attr_group
1261 .attrs[cnt]);
1262 kfree(s_attr->data);
1263 kfree(s_attr);
1264 }
1265 kfree(msb->attr_group.attrs);
1266 }
1267
1268 msb->card = NULL;
1269}
1270
1271static int mspro_block_check_card(struct memstick_dev *card)
1272{
1273 struct mspro_block_data *msb = memstick_get_drvdata(card);
1274
1275 return (msb->active == 1);
1276}
1277
1278static int mspro_block_probe(struct memstick_dev *card)
1279{
1280 struct mspro_block_data *msb;
1281 int rc = 0;
1282
1283 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1284 if (!msb)
1285 return -ENOMEM;
1286 memstick_set_drvdata(card, msb);
1287 msb->card = card;
f1d82698 1288 spin_lock_init(&msb->q_lock);
baf8532a
AD		 1289
1290 rc = mspro_block_init_card(card);
1291
1292 if (rc)
1293 goto out_free;
1294
1295 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1296 if (rc)
1297 goto out_free;
1298
1299 rc = mspro_block_init_disk(card);
1300 if (!rc) {
1301 card->check = mspro_block_check_card;
17017d8d
AD		 1302 card->stop = mspro_block_stop;
1303 card->start = mspro_block_start;
baf8532a
AD		 1304 return 0;
1305 }
1306
1307 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1308out_free:
1309 memstick_set_drvdata(card, NULL);
1310 mspro_block_data_clear(msb);
1311 kfree(msb);
1312 return rc;
1313}
1314
1315static void mspro_block_remove(struct memstick_dev *card)
1316{
1317 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1318 unsigned long flags;
1319
1320 del_gendisk(msb->disk);
1321 dev_dbg(&card->dev, "mspro block remove\n");
1322 spin_lock_irqsave(&msb->q_lock, flags);
f1d82698
AD		 1323 msb->eject = 1;
1324 blk_start_queue(msb->queue);
baf8532a
AD		 1325 spin_unlock_irqrestore(&msb->q_lock, flags);
1326
baf8532a 1327 blk_cleanup_queue(msb->queue);
f1d82698 1328 msb->queue = NULL;
baf8532a
AD		 1329
1330 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1331
1332 mutex_lock(&mspro_block_disk_lock);
1333 mspro_block_data_clear(msb);
1334 mutex_unlock(&mspro_block_disk_lock);
1335
1336 mspro_block_disk_release(msb->disk);
1337 memstick_set_drvdata(card, NULL);
1338}
1339
1340#ifdef CONFIG_PM
1341
1342static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1343{
1344 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1345 unsigned long flags;
1346
1347 spin_lock_irqsave(&msb->q_lock, flags);
baf8532a 1348 blk_stop_queue(msb->queue);
f1d82698 1349 msb->active = 0;
baf8532a
AD		 1350 spin_unlock_irqrestore(&msb->q_lock, flags);
1351
baf8532a
AD		 1352 return 0;
1353}
1354
1355static int mspro_block_resume(struct memstick_dev *card)
1356{
1357 struct mspro_block_data *msb = memstick_get_drvdata(card);
1358 unsigned long flags;
1359 int rc = 0;
1360
1361#ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1362
1363 struct mspro_block_data *new_msb;
1364 struct memstick_host *host = card->host;
1365 struct mspro_sys_attr *s_attr, *r_attr;
1366 unsigned char cnt;
1367
1368 mutex_lock(&host->lock);
1369 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1370 if (!new_msb) {
1371 rc = -ENOMEM;
1372 goto out_unlock;
1373 }
1374
1375 new_msb->card = card;
1376 memstick_set_drvdata(card, new_msb);
1377 if (mspro_block_init_card(card))
1378 goto out_free;
1379
1380 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1381 && msb->attr_group.attrs[cnt]; ++cnt) {
1382 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1383 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1384
1385 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1386 && r_attr->id == s_attr->id) {
1387 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1388 break;
1389
f1d82698 1390 msb->active = 1;
baf8532a
AD		 1391 break;
1392 }
1393 }
1394
1395out_free:
1396 memstick_set_drvdata(card, msb);
1397 mspro_block_data_clear(new_msb);
1398 kfree(new_msb);
1399out_unlock:
1400 mutex_unlock(&host->lock);
1401
1402#endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1403
1404 spin_lock_irqsave(&msb->q_lock, flags);
1405 blk_start_queue(msb->queue);
1406 spin_unlock_irqrestore(&msb->q_lock, flags);
1407 return rc;
1408}
1409
1410#else
1411
1412#define mspro_block_suspend NULL
1413#define mspro_block_resume NULL
1414
1415#endif /* CONFIG_PM */
1416
1417static struct memstick_device_id mspro_block_id_tbl[] = {
1418 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1419 MEMSTICK_CLASS_GENERIC_DUO},
1420 {}
1421};
1422
1423
1424static struct memstick_driver mspro_block_driver = {
1425 .driver = {
1426 .name = DRIVER_NAME,
1427 .owner = THIS_MODULE
1428 },
1429 .id_table = mspro_block_id_tbl,
1430 .probe = mspro_block_probe,
1431 .remove = mspro_block_remove,
1432 .suspend = mspro_block_suspend,
1433 .resume = mspro_block_resume
1434};
1435
1436static int __init mspro_block_init(void)
1437{
1438 int rc = -ENOMEM;
1439
1440 rc = register_blkdev(major, DRIVER_NAME);
1441 if (rc < 0) {
1442 printk(KERN_ERR DRIVER_NAME ": failed to register "
1443 "major %d, error %d\n", major, rc);
1444 return rc;
1445 }
1446 if (!major)
1447 major = rc;
1448
1449 rc = memstick_register_driver(&mspro_block_driver);
1450 if (rc)
1451 unregister_blkdev(major, DRIVER_NAME);
1452 return rc;
1453}
1454
1455static void __exit mspro_block_exit(void)
1456{
1457 memstick_unregister_driver(&mspro_block_driver);
1458 unregister_blkdev(major, DRIVER_NAME);
1459 idr_destroy(&mspro_block_disk_idr);
1460}
1461
1462module_init(mspro_block_init);
1463module_exit(mspro_block_exit);
1464
1465MODULE_LICENSE("GPL");
1466MODULE_AUTHOR("Alex Dubov");
1467MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1468MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
kernel source for telekom puls (alcatel/mediatek)