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Merge remote-tracking branch 'spi/fix/dspi' into spi-linus
[linux-2.6-block.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>
5a0e3ad6 20#include <linux/slab.h>
2a48fc0a 21#include <linux/mutex.h>
baf8532a 22#include <linux/memstick.h>
c47e7893 23#include <linux/module.h>
baf8532a
AD		 24
25#define DRIVER_NAME "mspro_block"
baf8532a
AD		 26
27static int major;
28module_param(major, int, 0644);
29
30#define MSPRO_BLOCK_MAX_SEGS 32
31#define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
32
33#define MSPRO_BLOCK_SIGNATURE 0xa5c3
34#define MSPRO_BLOCK_MAX_ATTRIBUTES 41
35
8e82f8c3
AD		 36#define MSPRO_BLOCK_PART_SHIFT 3
37
baf8532a
AD		 38enum {
39 MSPRO_BLOCK_ID_SYSINFO = 0x10,
40 MSPRO_BLOCK_ID_MODELNAME = 0x15,
41 MSPRO_BLOCK_ID_MBR = 0x20,
42 MSPRO_BLOCK_ID_PBR16 = 0x21,
43 MSPRO_BLOCK_ID_PBR32 = 0x22,
44 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
45 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
46 MSPRO_BLOCK_ID_DEVINFO = 0x30
47};
48
49struct mspro_sys_attr {
50 size_t size;
51 void *data;
52 unsigned char id;
53 char name[32];
54 struct device_attribute dev_attr;
55};
56
57struct mspro_attr_entry {
69347a23
HH		 58 __be32 address;
59 __be32 size;
baf8532a
AD		 60 unsigned char id;
61 unsigned char reserved[3];
62} __attribute__((packed));
63
64struct mspro_attribute {
69347a23 65 __be16 signature;
baf8532a
AD		 66 unsigned short version;
67 unsigned char count;
68 unsigned char reserved[11];
69 struct mspro_attr_entry entries[];
70} __attribute__((packed));
71
72struct mspro_sys_info {
73 unsigned char class;
74 unsigned char reserved0;
69347a23
HH		 75 __be16 block_size;
76 __be16 block_count;
77 __be16 user_block_count;
78 __be16 page_size;
baf8532a
AD		 79 unsigned char reserved1[2];
80 unsigned char assembly_date[8];
69347a23 81 __be32 serial_number;
baf8532a
AD		 82 unsigned char assembly_maker_code;
83 unsigned char assembly_model_code[3];
69347a23
HH		 84 __be16 memory_maker_code;
85 __be16 memory_model_code;
baf8532a
AD		 86 unsigned char reserved2[4];
87 unsigned char vcc;
88 unsigned char vpp;
69347a23
HH		 89 __be16 controller_number;
90 __be16 controller_function;
91 __be16 start_sector;
92 __be16 unit_size;
baf8532a
AD		 93 unsigned char ms_sub_class;
94 unsigned char reserved3[4];
95 unsigned char interface_type;
69347a23 96 __be16 controller_code;
baf8532a
AD		 97 unsigned char format_type;
98 unsigned char reserved4;
99 unsigned char device_type;
100 unsigned char reserved5[7];
101 unsigned char mspro_id[16];
102 unsigned char reserved6[16];
103} __attribute__((packed));
104
105struct mspro_mbr {
106 unsigned char boot_partition;
107 unsigned char start_head;
108 unsigned char start_sector;
109 unsigned char start_cylinder;
110 unsigned char partition_type;
111 unsigned char end_head;
112 unsigned char end_sector;
113 unsigned char end_cylinder;
114 unsigned int start_sectors;
115 unsigned int sectors_per_partition;
116} __attribute__((packed));
117
efb2742e
AD		 118struct mspro_specfile {
119 char name[8];
120 char ext[3];
121 unsigned char attr;
122 unsigned char reserved[10];
123 unsigned short time;
124 unsigned short date;
125 unsigned short cluster;
126 unsigned int size;
127} __attribute__((packed));
128
baf8532a 129struct mspro_devinfo {
69347a23
HH		 130 __be16 cylinders;
131 __be16 heads;
132 __be16 bytes_per_track;
133 __be16 bytes_per_sector;
134 __be16 sectors_per_track;
baf8532a
AD		 135 unsigned char reserved[6];
136} __attribute__((packed));
137
138struct mspro_block_data {
139 struct memstick_dev *card;
140 unsigned int usage_count;
ead70773 141 unsigned int caps;
baf8532a
AD		 142 struct gendisk *disk;
143 struct request_queue *queue;
f1d82698 144 struct request *block_req;
baf8532a 145 spinlock_t q_lock;
baf8532a
AD		 146
147 unsigned short page_size;
148 unsigned short cylinders;
149 unsigned short heads;
150 unsigned short sectors_per_track;
151
152 unsigned char system;
153 unsigned char read_only:1,
f1d82698 154 eject:1,
baf8532a 155 has_request:1,
f1d82698
AD		 156 data_dir:1,
157 active:1;
baf8532a
AD		 158 unsigned char transfer_cmd;
159
160 int (*mrq_handler)(struct memstick_dev *card,
161 struct memstick_request **mrq);
162
496fc1a6
AD		 163
164 /* Default request setup function for data access method preferred by
165 * this host instance.
166 */
167 void (*setup_transfer)(struct memstick_dev *card,
168 u64 offset, size_t length);
169
baf8532a
AD		 170 struct attribute_group attr_group;
171
172 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
173 unsigned int seg_count;
174 unsigned int current_seg;
f1d82698 175 unsigned int current_page;
baf8532a
AD		 176};
177
178static DEFINE_IDR(mspro_block_disk_idr);
179static DEFINE_MUTEX(mspro_block_disk_lock);
180
f1d82698
AD		 181static int mspro_block_complete_req(struct memstick_dev *card, int error);
182
baf8532a
AD		 183/*** Block device ***/
184
5d9a54b6 185static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
baf8532a 186{
5d9a54b6 187 struct gendisk *disk = bdev->bd_disk;
baf8532a
AD		 188 struct mspro_block_data *msb = disk->private_data;
189 int rc = -ENXIO;
190
191 mutex_lock(&mspro_block_disk_lock);
192
193 if (msb && msb->card) {
194 msb->usage_count++;
5d9a54b6 195 if ((mode & FMODE_WRITE) && msb->read_only)
baf8532a
AD		 196 rc = -EROFS;
197 else
198 rc = 0;
199 }
200
201 mutex_unlock(&mspro_block_disk_lock);
202
203 return rc;
204}
205
206
db2a144b 207static void mspro_block_disk_release(struct gendisk *disk)
baf8532a
AD		 208{
209 struct mspro_block_data *msb = disk->private_data;
f331c029 210 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
baf8532a
AD		 211
212 mutex_lock(&mspro_block_disk_lock);
213
f1d82698
AD		 214 if (msb) {
215 if (msb->usage_count)
216 msb->usage_count--;
217
baf8532a
AD		 218 if (!msb->usage_count) {
219 kfree(msb);
220 disk->private_data = NULL;
221 idr_remove(&mspro_block_disk_idr, disk_id);
222 put_disk(disk);
223 }
224 }
225
226 mutex_unlock(&mspro_block_disk_lock);
baf8532a
AD		 227}
228
db2a144b 229static void mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
baf8532a 230{
db2a144b 231 mspro_block_disk_release(disk);
baf8532a
AD		 232}
233
234static int mspro_block_bd_getgeo(struct block_device *bdev,
235 struct hd_geometry *geo)
236{
237 struct mspro_block_data *msb = bdev->bd_disk->private_data;
238
239 geo->heads = msb->heads;
240 geo->sectors = msb->sectors_per_track;
241 geo->cylinders = msb->cylinders;
242
243 return 0;
244}
245
83d5cde4 246static const struct block_device_operations ms_block_bdops = {
5d9a54b6
AV		 247 .open = mspro_block_bd_open,
248 .release = mspro_block_bd_release,
baf8532a
AD		 249 .getgeo = mspro_block_bd_getgeo,
250 .owner = THIS_MODULE
251};
252
253/*** Information ***/
254
255static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
256{
257 struct device_attribute *dev_attr
258 = container_of(attr, struct device_attribute, attr);
259 return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
260}
261
262static const char *mspro_block_attr_name(unsigned char tag)
263{
264 switch (tag) {
265 case MSPRO_BLOCK_ID_SYSINFO:
266 return "attr_sysinfo";
267 case MSPRO_BLOCK_ID_MODELNAME:
268 return "attr_modelname";
269 case MSPRO_BLOCK_ID_MBR:
270 return "attr_mbr";
271 case MSPRO_BLOCK_ID_PBR16:
272 return "attr_pbr16";
273 case MSPRO_BLOCK_ID_PBR32:
274 return "attr_pbr32";
275 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
276 return "attr_specfilevalues1";
277 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
278 return "attr_specfilevalues2";
279 case MSPRO_BLOCK_ID_DEVINFO:
280 return "attr_devinfo";
281 default:
282 return NULL;
283 };
284}
285
286typedef ssize_t (*sysfs_show_t)(struct device *dev,
287 struct device_attribute *attr,
288 char *buffer);
289
290static ssize_t mspro_block_attr_show_default(struct device *dev,
291 struct device_attribute *attr,
292 char *buffer)
293{
294 struct mspro_sys_attr *s_attr = container_of(attr,
295 struct mspro_sys_attr,
296 dev_attr);
297
298 ssize_t cnt, rc = 0;
299
300 for (cnt = 0; cnt < s_attr->size; cnt++) {
301 if (cnt && !(cnt % 16)) {
302 if (PAGE_SIZE - rc)
303 buffer[rc++] = '\n';
304 }
305
306 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
307 ((unsigned char *)s_attr->data)[cnt]);
308 }
309 return rc;
310}
311
312static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
313 struct device_attribute *attr,
314 char *buffer)
315{
316 struct mspro_sys_attr *x_attr = container_of(attr,
317 struct mspro_sys_attr,
318 dev_attr);
319 struct mspro_sys_info *x_sys = x_attr->data;
320 ssize_t rc = 0;
251cc9b9
AD		 321 int date_tz = 0, date_tz_f = 0;
322
323 if (x_sys->assembly_date[0] > 0x80U) {
324 date_tz = (~x_sys->assembly_date[0]) + 1;
325 date_tz_f = date_tz & 3;
326 date_tz >>= 2;
327 date_tz = -date_tz;
328 date_tz_f *= 15;
329 } else if (x_sys->assembly_date[0] < 0x80U) {
330 date_tz = x_sys->assembly_date[0];
331 date_tz_f = date_tz & 3;
332 date_tz >>= 2;
333 date_tz_f *= 15;
334 }
baf8532a
AD		 335
336 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
337 x_sys->class);
338 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
339 be16_to_cpu(x_sys->block_size));
340 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
341 be16_to_cpu(x_sys->block_count));
342 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
343 be16_to_cpu(x_sys->user_block_count));
344 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
345 be16_to_cpu(x_sys->page_size));
346 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
251cc9b9
AD		 347 "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
348 date_tz, date_tz_f,
69347a23 349 be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
baf8532a
AD		 350 x_sys->assembly_date[3], x_sys->assembly_date[4],
351 x_sys->assembly_date[5], x_sys->assembly_date[6],
352 x_sys->assembly_date[7]);
353 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
354 be32_to_cpu(x_sys->serial_number));
355 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
356 "assembly maker code: %x\n",
357 x_sys->assembly_maker_code);
358 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
359 "%02x%02x%02x\n", x_sys->assembly_model_code[0],
360 x_sys->assembly_model_code[1],
361 x_sys->assembly_model_code[2]);
362 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
363 be16_to_cpu(x_sys->memory_maker_code));
364 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
365 be16_to_cpu(x_sys->memory_model_code));
366 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
367 x_sys->vcc);
368 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
369 x_sys->vpp);
370 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
371 be16_to_cpu(x_sys->controller_number));
372 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
373 "controller function: %x\n",
374 be16_to_cpu(x_sys->controller_function));
375 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
376 be16_to_cpu(x_sys->start_sector));
377 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
378 be16_to_cpu(x_sys->unit_size));
379 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
380 x_sys->ms_sub_class);
381 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
382 x_sys->interface_type);
383 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
384 be16_to_cpu(x_sys->controller_code));
385 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
386 x_sys->format_type);
387 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
388 x_sys->device_type);
389 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
390 x_sys->mspro_id);
391 return rc;
392}
393
394static ssize_t mspro_block_attr_show_modelname(struct device *dev,
395 struct device_attribute *attr,
396 char *buffer)
397{
398 struct mspro_sys_attr *s_attr = container_of(attr,
399 struct mspro_sys_attr,
400 dev_attr);
401
402 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
403}
404
405static ssize_t mspro_block_attr_show_mbr(struct device *dev,
406 struct device_attribute *attr,
407 char *buffer)
408{
409 struct mspro_sys_attr *x_attr = container_of(attr,
410 struct mspro_sys_attr,
411 dev_attr);
412 struct mspro_mbr *x_mbr = x_attr->data;
413 ssize_t rc = 0;
414
415 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
416 x_mbr->boot_partition);
417 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
418 x_mbr->start_head);
419 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
420 x_mbr->start_sector);
421 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
422 x_mbr->start_cylinder);
423 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
424 x_mbr->partition_type);
425 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
426 x_mbr->end_head);
427 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
428 x_mbr->end_sector);
429 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
430 x_mbr->end_cylinder);
431 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
432 x_mbr->start_sectors);
433 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
434 "sectors per partition: %x\n",
435 x_mbr->sectors_per_partition);
436 return rc;
437}
438
efb2742e
AD		 439static ssize_t mspro_block_attr_show_specfile(struct device *dev,
440 struct device_attribute *attr,
441 char *buffer)
442{
443 struct mspro_sys_attr *x_attr = container_of(attr,
444 struct mspro_sys_attr,
445 dev_attr);
446 struct mspro_specfile *x_spfile = x_attr->data;
447 char name[9], ext[4];
448 ssize_t rc = 0;
449
450 memcpy(name, x_spfile->name, 8);
451 name[8] = 0;
452 memcpy(ext, x_spfile->ext, 3);
453 ext[3] = 0;
454
455 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
456 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
457 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
458 x_spfile->attr);
459 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
460 x_spfile->time >> 11,
461 (x_spfile->time >> 5) & 0x3f,
462 (x_spfile->time & 0x1f) * 2);
463 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
464 (x_spfile->date >> 9) + 1980,
465 (x_spfile->date >> 5) & 0xf,
466 x_spfile->date & 0x1f);
467 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
468 x_spfile->cluster);
469 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
470 x_spfile->size);
471 return rc;
472}
473
baf8532a
AD		 474static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
475 struct device_attribute *attr,
476 char *buffer)
477{
478 struct mspro_sys_attr *x_attr = container_of(attr,
479 struct mspro_sys_attr,
480 dev_attr);
481 struct mspro_devinfo *x_devinfo = x_attr->data;
482 ssize_t rc = 0;
483
484 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
485 be16_to_cpu(x_devinfo->cylinders));
486 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
487 be16_to_cpu(x_devinfo->heads));
488 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
489 be16_to_cpu(x_devinfo->bytes_per_track));
490 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
491 be16_to_cpu(x_devinfo->bytes_per_sector));
492 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
493 be16_to_cpu(x_devinfo->sectors_per_track));
494 return rc;
495}
496
497static sysfs_show_t mspro_block_attr_show(unsigned char tag)
498{
499 switch (tag) {
500 case MSPRO_BLOCK_ID_SYSINFO:
501 return mspro_block_attr_show_sysinfo;
502 case MSPRO_BLOCK_ID_MODELNAME:
503 return mspro_block_attr_show_modelname;
504 case MSPRO_BLOCK_ID_MBR:
505 return mspro_block_attr_show_mbr;
efb2742e
AD		 506 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
507 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
508 return mspro_block_attr_show_specfile;
baf8532a
AD		 509 case MSPRO_BLOCK_ID_DEVINFO:
510 return mspro_block_attr_show_devinfo;
511 default:
512 return mspro_block_attr_show_default;
513 }
514}
515
516/*** Protocol handlers ***/
517
518/*
519 * Functions prefixed with "h_" are protocol callbacks. They can be called from
520 * interrupt context. Return value of 0 means that request processing is still
521 * ongoing, while special error value of -EAGAIN means that current request is
522 * finished (and request processor should come back some time later).
523 */
524
525static int h_mspro_block_req_init(struct memstick_dev *card,
526 struct memstick_request **mrq)
527{
528 struct mspro_block_data *msb = memstick_get_drvdata(card);
529
530 *mrq = &card->current_mrq;
531 card->next_request = msb->mrq_handler;
532 return 0;
533}
534
535static int h_mspro_block_default(struct memstick_dev *card,
536 struct memstick_request **mrq)
537{
f1d82698
AD		 538 return mspro_block_complete_req(card, (*mrq)->error);
539}
540
541static int h_mspro_block_default_bad(struct memstick_dev *card,
542 struct memstick_request **mrq)
543{
544 return -ENXIO;
baf8532a
AD		 545}
546
547static int h_mspro_block_get_ro(struct memstick_dev *card,
548 struct memstick_request **mrq)
549{
550 struct mspro_block_data *msb = memstick_get_drvdata(card);
551
f1d82698
AD		 552 if (!(*mrq)->error) {
553 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
554 & MEMSTICK_STATUS0_WP)
555 msb->read_only = 1;
556 else
557 msb->read_only = 0;
baf8532a
AD		 558 }
559
f1d82698 560 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 561}
562
563static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
564 struct memstick_request **mrq)
565{
baf8532a
AD		 566 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
567
f1d82698
AD		 568 if (!(*mrq)->error) {
569 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
570 (*mrq)->error = -EFAULT;
571 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
572 return 0;
baf8532a
AD		 573 }
574
f1d82698 575 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 576}
577
578static int h_mspro_block_transfer_data(struct memstick_dev *card,
579 struct memstick_request **mrq)
580{
baf8532a
AD		 581 struct mspro_block_data *msb = memstick_get_drvdata(card);
582 unsigned char t_val = 0;
583 struct scatterlist t_sg = { 0 };
584 size_t t_offset;
585
f1d82698
AD		 586 if ((*mrq)->error)
587 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 588
589 switch ((*mrq)->tpc) {
590 case MS_TPC_WRITE_REG:
591 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
ead70773 592 (*mrq)->need_card_int = 1;
baf8532a
AD		 593 return 0;
594 case MS_TPC_SET_CMD:
595 t_val = (*mrq)->int_reg;
596 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
ead70773 597 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
baf8532a
AD		 598 goto has_int_reg;
599 return 0;
600 case MS_TPC_GET_INT:
601 t_val = (*mrq)->data[0];
602has_int_reg:
603 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
604 t_val = MSPRO_CMD_STOP;
605 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
606 card->next_request = h_mspro_block_default;
607 return 0;
608 }
609
610 if (msb->current_page
611 == (msb->req_sg[msb->current_seg].length
612 / msb->page_size)) {
613 msb->current_page = 0;
614 msb->current_seg++;
615
616 if (msb->current_seg == msb->seg_count) {
617 if (t_val & MEMSTICK_INT_CED) {
f1d82698
AD		 618 return mspro_block_complete_req(card,
619 0);
baf8532a
AD		 620 } else {
621 card->next_request
622 = h_mspro_block_wait_for_ced;
623 memstick_init_req(*mrq, MS_TPC_GET_INT,
624 NULL, 1);
625 return 0;
626 }
627 }
628 }
629
630 if (!(t_val & MEMSTICK_INT_BREQ)) {
631 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
632 return 0;
633 }
634
635 t_offset = msb->req_sg[msb->current_seg].offset;
636 t_offset += msb->current_page * msb->page_size;
637
638 sg_set_page(&t_sg,
639 nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
640 t_offset >> PAGE_SHIFT),
641 msb->page_size, offset_in_page(t_offset));
642
643 memstick_init_req_sg(*mrq, msb->data_dir == READ
644 ? MS_TPC_READ_LONG_DATA
645 : MS_TPC_WRITE_LONG_DATA,
646 &t_sg);
ead70773 647 (*mrq)->need_card_int = 1;
baf8532a
AD		 648 return 0;
649 case MS_TPC_READ_LONG_DATA:
650 case MS_TPC_WRITE_LONG_DATA:
651 msb->current_page++;
ead70773 652 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
baf8532a
AD		 653 t_val = (*mrq)->int_reg;
654 goto has_int_reg;
655 } else {
656 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
657 return 0;
658 }
659
660 default:
661 BUG();
662 }
663}
664
496fc1a6
AD		 665/*** Transfer setup functions for different access methods. ***/
666
667/** Setup data transfer request for SET_CMD TPC with arguments in card
668 * registers.
669 *
670 * @card Current media instance
671 * @offset Target data offset in bytes
672 * @length Required transfer length in bytes.
673 */
674static void h_mspro_block_setup_cmd(struct memstick_dev *card, u64 offset,
675 size_t length)
676{
677 struct mspro_block_data *msb = memstick_get_drvdata(card);
678 struct mspro_param_register param = {
679 .system = msb->system,
680 .data_count = cpu_to_be16((uint16_t)(length / msb->page_size)),
681 /* ISO C90 warning precludes direct initialization for now. */
682 .data_address = 0,
683 .tpc_param = 0
684 };
685
686 do_div(offset, msb->page_size);
687 param.data_address = cpu_to_be32((uint32_t)offset);
688
689 card->next_request = h_mspro_block_req_init;
690 msb->mrq_handler = h_mspro_block_transfer_data;
691 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
692 &param, sizeof(param));
693}
694
baf8532a
AD		 695/*** Data transfer ***/
696
f1d82698 697static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
baf8532a
AD		 698{
699 struct mspro_block_data *msb = memstick_get_drvdata(card);
496fc1a6 700 u64 t_off;
f1d82698 701 unsigned int count;
baf8532a 702
f1d82698
AD		 703try_again:
704 while (chunk) {
705 msb->current_page = 0;
baf8532a 706 msb->current_seg = 0;
f1d82698
AD		 707 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
708 msb->block_req,
709 msb->req_sg);
baf8532a 710
f1d82698 711 if (!msb->seg_count) {
296b2f6a 712 chunk = __blk_end_request_cur(msb->block_req, -ENOMEM);
f1d82698
AD		 713 continue;
714 }
baf8532a 715
496fc1a6
AD		 716 t_off = blk_rq_pos(msb->block_req);
717 t_off <<= 9;
1011c1b9 718 count = blk_rq_bytes(msb->block_req);
baf8532a 719
496fc1a6 720 msb->setup_transfer(card, t_off, count);
f1d82698
AD		 721
722 msb->data_dir = rq_data_dir(msb->block_req);
723 msb->transfer_cmd = msb->data_dir == READ
724 ? MSPRO_CMD_READ_DATA
725 : MSPRO_CMD_WRITE_DATA;
726
f1d82698
AD		 727 memstick_new_req(card->host);
728 return 0;
729 }
730
9934c8c0
TH		 731 dev_dbg(&card->dev, "blk_fetch\n");
732 msb->block_req = blk_fetch_request(msb->queue);
f1d82698
AD		 733 if (!msb->block_req) {
734 dev_dbg(&card->dev, "issue end\n");
735 return -EAGAIN;
736 }
737
738 dev_dbg(&card->dev, "trying again\n");
739 chunk = 1;
740 goto try_again;
baf8532a
AD		 741}
742
f1d82698 743static int mspro_block_complete_req(struct memstick_dev *card, int error)
baf8532a 744{
f1d82698
AD		 745 struct mspro_block_data *msb = memstick_get_drvdata(card);
746 int chunk, cnt;
747 unsigned int t_len = 0;
baf8532a
AD		 748 unsigned long flags;
749
750 spin_lock_irqsave(&msb->q_lock, flags);
f1d82698
AD		 751 dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
752 error);
753
754 if (msb->has_request) {
755 /* Nothing to do - not really an error */
756 if (error == -EAGAIN)
757 error = 0;
758
759 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
760 if (msb->data_dir == READ) {
761 for (cnt = 0; cnt < msb->current_seg; cnt++)
762 t_len += msb->req_sg[cnt].length
763 / msb->page_size;
764
765 if (msb->current_page)
766 t_len += msb->current_page - 1;
767
768 t_len *= msb->page_size;
769 }
770 } else
1011c1b9 771 t_len = blk_rq_bytes(msb->block_req);
f1d82698
AD		 772
773 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
774
775 if (error && !t_len)
776 t_len = blk_rq_cur_bytes(msb->block_req);
777
778 chunk = __blk_end_request(msb->block_req, error, t_len);
779
780 error = mspro_block_issue_req(card, chunk);
781
782 if (!error)
783 goto out;
784 else
785 msb->has_request = 0;
786 } else {
787 if (!error)
788 error = -EAGAIN;
789 }
790
791 card->next_request = h_mspro_block_default_bad;
792 complete_all(&card->mrq_complete);
793out:
baf8532a 794 spin_unlock_irqrestore(&msb->q_lock, flags);
f1d82698 795 return error;
baf8532a
AD		 796}
797
17017d8d
AD		 798static void mspro_block_stop(struct memstick_dev *card)
799{
800 struct mspro_block_data *msb = memstick_get_drvdata(card);
801 int rc = 0;
802 unsigned long flags;
803
804 while (1) {
805 spin_lock_irqsave(&msb->q_lock, flags);
806 if (!msb->has_request) {
807 blk_stop_queue(msb->queue);
808 rc = 1;
809 }
810 spin_unlock_irqrestore(&msb->q_lock, flags);
811
812 if (rc)
813 break;
814
815 wait_for_completion(&card->mrq_complete);
816 }
817}
818
819static void mspro_block_start(struct memstick_dev *card)
820{
821 struct mspro_block_data *msb = memstick_get_drvdata(card);
822 unsigned long flags;
823
824 spin_lock_irqsave(&msb->q_lock, flags);
825 blk_start_queue(msb->queue);
826 spin_unlock_irqrestore(&msb->q_lock, flags);
827}
828
f1d82698 829static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
baf8532a 830{
33659ebb
CH		 831 if (req->cmd_type != REQ_TYPE_FS &&
832 req->cmd_type != REQ_TYPE_BLOCK_PC) {
f1d82698
AD		 833 blk_dump_rq_flags(req, "MSPro unsupported request");
834 return BLKPREP_KILL;
835 }
baf8532a 836
f1d82698 837 req->cmd_flags |= REQ_DONTPREP;
baf8532a 838
f1d82698 839 return BLKPREP_OK;
baf8532a
AD		 840}
841
f1d82698 842static void mspro_block_submit_req(struct request_queue *q)
baf8532a
AD		 843{
844 struct memstick_dev *card = q->queuedata;
845 struct mspro_block_data *msb = memstick_get_drvdata(card);
846 struct request *req = NULL;
847
f1d82698
AD		 848 if (msb->has_request)
849 return;
850
851 if (msb->eject) {
9934c8c0 852 while ((req = blk_fetch_request(q)) != NULL)
40cbbb78 853 __blk_end_request_all(req, -ENODEV);
f1d82698
AD		 854
855 return;
baf8532a 856 }
f1d82698
AD		 857
858 msb->has_request = 1;
859 if (mspro_block_issue_req(card, 0))
860 msb->has_request = 0;
baf8532a
AD		 861}
862
863/*** Initialization ***/
864
865static int mspro_block_wait_for_ced(struct memstick_dev *card)
866{
867 struct mspro_block_data *msb = memstick_get_drvdata(card);
868
869 card->next_request = h_mspro_block_req_init;
870 msb->mrq_handler = h_mspro_block_wait_for_ced;
871 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
872 memstick_new_req(card->host);
873 wait_for_completion(&card->mrq_complete);
874 return card->current_mrq.error;
875}
876
962ee1b1
AD		 877static int mspro_block_set_interface(struct memstick_dev *card,
878 unsigned char sys_reg)
baf8532a
AD		 879{
880 struct memstick_host *host = card->host;
881 struct mspro_block_data *msb = memstick_get_drvdata(card);
882 struct mspro_param_register param = {
962ee1b1 883 .system = sys_reg,
baf8532a
AD		 884 .data_count = 0,
885 .data_address = 0,
e1f19995 886 .tpc_param = 0
baf8532a
AD		 887 };
888
889 card->next_request = h_mspro_block_req_init;
890 msb->mrq_handler = h_mspro_block_default;
891 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
892 sizeof(param));
893 memstick_new_req(host);
894 wait_for_completion(&card->mrq_complete);
962ee1b1
AD		 895 return card->current_mrq.error;
896}
897
898static int mspro_block_switch_interface(struct memstick_dev *card)
899{
900 struct memstick_host *host = card->host;
901 struct mspro_block_data *msb = memstick_get_drvdata(card);
902 int rc = 0;
903
8e82f8c3 904try_again:
962ee1b1
AD		 905 if (msb->caps & MEMSTICK_CAP_PAR4)
906 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
907 else
908 return 0;
909
910 if (rc) {
911 printk(KERN_WARNING
912 "%s: could not switch to 4-bit mode, error %d\n",
0252c3b4 913 dev_name(&card->dev), rc);
962ee1b1
AD		 914 return 0;
915 }
baf8532a 916
e1f19995
AD		 917 msb->system = MEMSTICK_SYS_PAR4;
918 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
962ee1b1 919 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
0252c3b4 920 dev_name(&card->dev));
962ee1b1
AD		 921
922 if (msb->caps & MEMSTICK_CAP_PAR8) {
923 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
924
925 if (!rc) {
926 msb->system = MEMSTICK_SYS_PAR8;
927 host->set_param(host, MEMSTICK_INTERFACE,
928 MEMSTICK_PAR8);
929 printk(KERN_INFO
930 "%s: switching to 8-bit parallel mode\n",
0252c3b4 931 dev_name(&card->dev));
962ee1b1
AD		 932 } else
933 printk(KERN_WARNING
934 "%s: could not switch to 8-bit mode, error %d\n",
0252c3b4 935 dev_name(&card->dev), rc);
962ee1b1 936 }
baf8532a
AD		 937
938 card->next_request = h_mspro_block_req_init;
939 msb->mrq_handler = h_mspro_block_default;
940 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
941 memstick_new_req(card->host);
942 wait_for_completion(&card->mrq_complete);
962ee1b1 943 rc = card->current_mrq.error;
baf8532a 944
962ee1b1
AD		 945 if (rc) {
946 printk(KERN_WARNING
947 "%s: interface error, trying to fall back to serial\n",
0252c3b4 948 dev_name(&card->dev));
59367258
AD		 949 msb->system = MEMSTICK_SYS_SERIAL;
950 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
962ee1b1 951 msleep(10);
59367258 952 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
baf8532a 953 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
59367258 954
962ee1b1
AD		 955 rc = memstick_set_rw_addr(card);
956 if (!rc)
957 rc = mspro_block_set_interface(card, msb->system);
8e82f8c3
AD		 958
959 if (!rc) {
960 msleep(150);
961 rc = mspro_block_wait_for_ced(card);
962 if (rc)
963 return rc;
964
965 if (msb->caps & MEMSTICK_CAP_PAR8) {
966 msb->caps &= ~MEMSTICK_CAP_PAR8;
967 goto try_again;
968 }
969 }
baf8532a 970 }
962ee1b1 971 return rc;
baf8532a
AD		 972}
973
974/* Memory allocated for attributes by this function should be freed by
25985edc 975 * mspro_block_data_clear, no matter if the initialization process succeeded
baf8532a
AD		 976 * or failed.
977 */
978static int mspro_block_read_attributes(struct memstick_dev *card)
979{
980 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 981 struct mspro_attribute *attr = NULL;
982 struct mspro_sys_attr *s_attr = NULL;
983 unsigned char *buffer = NULL;
984 int cnt, rc, attr_count;
496fc1a6
AD		 985 /* While normally physical device offsets, represented here by
986 * attr_offset and attr_len will be of large numeric types, we can be
987 * sure, that attributes are close enough to the beginning of the
988 * device, to save ourselves some trouble.
989 */
990 unsigned int addr, attr_offset = 0, attr_len = msb->page_size;
baf8532a
AD		 991
992 attr = kmalloc(msb->page_size, GFP_KERNEL);
993 if (!attr)
994 return -ENOMEM;
995
996 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
997 msb->seg_count = 1;
998 msb->current_seg = 0;
999 msb->current_page = 0;
1000 msb->data_dir = READ;
1001 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1002
496fc1a6
AD		 1003 msb->setup_transfer(card, attr_offset, attr_len);
1004
baf8532a
AD		 1005 memstick_new_req(card->host);
1006 wait_for_completion(&card->mrq_complete);
1007 if (card->current_mrq.error) {
1008 rc = card->current_mrq.error;
1009 goto out_free_attr;
1010 }
1011
1012 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
1013 printk(KERN_ERR "%s: unrecognized device signature %x\n",
0252c3b4 1014 dev_name(&card->dev), be16_to_cpu(attr->signature));
baf8532a
AD		 1015 rc = -ENODEV;
1016 goto out_free_attr;
1017 }
1018
1019 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1020 printk(KERN_WARNING "%s: way too many attribute entries\n",
0252c3b4 1021 dev_name(&card->dev));
baf8532a
AD		 1022 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1023 } else
1024 attr_count = attr->count;
1025
1026 msb->attr_group.attrs = kzalloc((attr_count + 1)
1027 * sizeof(struct attribute),
1028 GFP_KERNEL);
1029 if (!msb->attr_group.attrs) {
1030 rc = -ENOMEM;
1031 goto out_free_attr;
1032 }
1033 msb->attr_group.name = "media_attributes";
1034
496fc1a6 1035 buffer = kmalloc(attr_len, GFP_KERNEL);
baf8532a
AD		 1036 if (!buffer) {
1037 rc = -ENOMEM;
1038 goto out_free_attr;
1039 }
496fc1a6 1040 memcpy(buffer, (char *)attr, attr_len);
baf8532a
AD		 1041
1042 for (cnt = 0; cnt < attr_count; ++cnt) {
1043 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1044 if (!s_attr) {
1045 rc = -ENOMEM;
1046 goto out_free_buffer;
1047 }
1048
1049 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1050 addr = be32_to_cpu(attr->entries[cnt].address);
496fc1a6 1051 s_attr->size = be32_to_cpu(attr->entries[cnt].size);
baf8532a 1052 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
496fc1a6
AD		 1053 "size %zx\n", cnt, attr->entries[cnt].id, addr,
1054 s_attr->size);
baf8532a
AD		 1055 s_attr->id = attr->entries[cnt].id;
1056 if (mspro_block_attr_name(s_attr->id))
1057 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1058 mspro_block_attr_name(attr->entries[cnt].id));
1059 else
1060 snprintf(s_attr->name, sizeof(s_attr->name),
1061 "attr_x%02x", attr->entries[cnt].id);
1062
21fd0495 1063 sysfs_attr_init(&s_attr->dev_attr.attr);
baf8532a
AD		 1064 s_attr->dev_attr.attr.name = s_attr->name;
1065 s_attr->dev_attr.attr.mode = S_IRUGO;
baf8532a
AD		 1066 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1067
496fc1a6 1068 if (!s_attr->size)
baf8532a
AD		 1069 continue;
1070
496fc1a6 1071 s_attr->data = kmalloc(s_attr->size, GFP_KERNEL);
baf8532a
AD		 1072 if (!s_attr->data) {
1073 rc = -ENOMEM;
1074 goto out_free_buffer;
1075 }
1076
496fc1a6
AD		 1077 if (((addr / msb->page_size) == (attr_offset / msb->page_size))
1078 && (((addr + s_attr->size - 1) / msb->page_size)
1079 == (attr_offset / msb->page_size))) {
baf8532a 1080 memcpy(s_attr->data, buffer + addr % msb->page_size,
496fc1a6 1081 s_attr->size);
baf8532a
AD		 1082 continue;
1083 }
1084
496fc1a6
AD		 1085 attr_offset = (addr / msb->page_size) * msb->page_size;
1086
1087 if ((attr_offset + attr_len) < (addr + s_attr->size)) {
baf8532a 1088 kfree(buffer);
496fc1a6
AD		 1089 attr_len = (((addr + s_attr->size) / msb->page_size)
1090 + 1 ) * msb->page_size - attr_offset;
1091 buffer = kmalloc(attr_len, GFP_KERNEL);
baf8532a
AD		 1092 if (!buffer) {
1093 rc = -ENOMEM;
1094 goto out_free_attr;
1095 }
1096 }
1097
496fc1a6 1098 sg_init_one(&msb->req_sg[0], buffer, attr_len);
baf8532a
AD		 1099 msb->seg_count = 1;
1100 msb->current_seg = 0;
1101 msb->current_page = 0;
1102 msb->data_dir = READ;
1103 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1104
496fc1a6
AD		 1105 dev_dbg(&card->dev, "reading attribute range %x, %x\n",
1106 attr_offset, attr_len);
baf8532a 1107
496fc1a6 1108 msb->setup_transfer(card, attr_offset, attr_len);
baf8532a
AD		 1109 memstick_new_req(card->host);
1110 wait_for_completion(&card->mrq_complete);
1111 if (card->current_mrq.error) {
1112 rc = card->current_mrq.error;
1113 goto out_free_buffer;
1114 }
1115
496fc1a6
AD		 1116 memcpy(s_attr->data, buffer + addr % msb->page_size,
1117 s_attr->size);
baf8532a
AD		 1118 }
1119
1120 rc = 0;
1121out_free_buffer:
1122 kfree(buffer);
1123out_free_attr:
1124 kfree(attr);
1125 return rc;
1126}
1127
1128static int mspro_block_init_card(struct memstick_dev *card)
1129{
1130 struct mspro_block_data *msb = memstick_get_drvdata(card);
1131 struct memstick_host *host = card->host;
1132 int rc = 0;
1133
e1f19995 1134 msb->system = MEMSTICK_SYS_SERIAL;
496fc1a6
AD		 1135 msb->setup_transfer = h_mspro_block_setup_cmd;
1136
baf8532a
AD		 1137 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1138 card->reg_addr.r_length = sizeof(struct ms_status_register);
1139 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1140 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1141
1142 if (memstick_set_rw_addr(card))
1143 return -EIO;
1144
ead70773 1145 msb->caps = host->caps;
8e82f8c3
AD		 1146
1147 msleep(150);
1148 rc = mspro_block_wait_for_ced(card);
962ee1b1
AD		 1149 if (rc)
1150 return rc;
baf8532a 1151
8e82f8c3 1152 rc = mspro_block_switch_interface(card);
baf8532a
AD		 1153 if (rc)
1154 return rc;
8e82f8c3 1155
baf8532a 1156 dev_dbg(&card->dev, "card activated\n");
ead70773
AD		 1157 if (msb->system != MEMSTICK_SYS_SERIAL)
1158 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
baf8532a
AD		 1159
1160 card->next_request = h_mspro_block_req_init;
1161 msb->mrq_handler = h_mspro_block_get_ro;
1162 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1163 sizeof(struct ms_status_register));
1164 memstick_new_req(card->host);
1165 wait_for_completion(&card->mrq_complete);
1166 if (card->current_mrq.error)
1167 return card->current_mrq.error;
1168
1169 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1170
1171 msb->page_size = 512;
1172 rc = mspro_block_read_attributes(card);
1173 if (rc)
1174 return rc;
1175
1176 dev_dbg(&card->dev, "attributes loaded\n");
1177 return 0;
1178
1179}
1180
1181static int mspro_block_init_disk(struct memstick_dev *card)
1182{
1183 struct mspro_block_data *msb = memstick_get_drvdata(card);
1184 struct memstick_host *host = card->host;
1185 struct mspro_devinfo *dev_info = NULL;
1186 struct mspro_sys_info *sys_info = NULL;
1187 struct mspro_sys_attr *s_attr = NULL;
1188 int rc, disk_id;
1189 u64 limit = BLK_BOUNCE_HIGH;
1190 unsigned long capacity;
1191
c4c66cf1
GKH		 1192 if (host->dev.dma_mask && *(host->dev.dma_mask))
1193 limit = *(host->dev.dma_mask);
baf8532a
AD		 1194
1195 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1196 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1197
1198 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1199 dev_info = s_attr->data;
1200 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1201 sys_info = s_attr->data;
1202 }
1203
1204 if (!dev_info || !sys_info)
1205 return -ENODEV;
1206
1207 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1208 msb->heads = be16_to_cpu(dev_info->heads);
1209 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1210
1211 msb->page_size = be16_to_cpu(sys_info->unit_size);
1212
d8256d48 1213 mutex_lock(&mspro_block_disk_lock);
7b51f478 1214 disk_id = idr_alloc(&mspro_block_disk_idr, card, 0, 256, GFP_KERNEL);
baf8532a 1215 mutex_unlock(&mspro_block_disk_lock);
7b51f478
TH		 1216 if (disk_id < 0)
1217 return disk_id;
baf8532a 1218
8e82f8c3 1219 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
baf8532a
AD		 1220 if (!msb->disk) {
1221 rc = -ENOMEM;
1222 goto out_release_id;
1223 }
1224
f1d82698 1225 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
baf8532a
AD		 1226 if (!msb->queue) {
1227 rc = -ENOMEM;
1228 goto out_put_disk;
1229 }
1230
1231 msb->queue->queuedata = card;
f1d82698 1232 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
baf8532a
AD		 1233
1234 blk_queue_bounce_limit(msb->queue, limit);
086fa5ff 1235 blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
8a78362c 1236 blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
baf8532a
AD		 1237 blk_queue_max_segment_size(msb->queue,
1238 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1239
1240 msb->disk->major = major;
8e82f8c3 1241 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
baf8532a
AD		 1242 msb->disk->fops = &ms_block_bdops;
1243 msb->usage_count = 1;
1244 msb->disk->private_data = msb;
1245 msb->disk->queue = msb->queue;
1246 msb->disk->driverfs_dev = &card->dev;
1247
1248 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1249
e1defc4f 1250 blk_queue_logical_block_size(msb->queue, msb->page_size);
baf8532a
AD		 1251
1252 capacity = be16_to_cpu(sys_info->user_block_count);
1253 capacity *= be16_to_cpu(sys_info->block_size);
1254 capacity *= msb->page_size >> 9;
1255 set_capacity(msb->disk, capacity);
1256 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
baf8532a 1257
baf8532a 1258 add_disk(msb->disk);
baf8532a
AD		 1259 msb->active = 1;
1260 return 0;
1261
1262out_put_disk:
1263 put_disk(msb->disk);
1264out_release_id:
1265 mutex_lock(&mspro_block_disk_lock);
1266 idr_remove(&mspro_block_disk_idr, disk_id);
1267 mutex_unlock(&mspro_block_disk_lock);
1268 return rc;
1269}
1270
1271static void mspro_block_data_clear(struct mspro_block_data *msb)
1272{
1273 int cnt;
1274 struct mspro_sys_attr *s_attr;
1275
1276 if (msb->attr_group.attrs) {
1277 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1278 s_attr = mspro_from_sysfs_attr(msb->attr_group
1279 .attrs[cnt]);
1280 kfree(s_attr->data);
1281 kfree(s_attr);
1282 }
1283 kfree(msb->attr_group.attrs);
1284 }
1285
1286 msb->card = NULL;
1287}
1288
1289static int mspro_block_check_card(struct memstick_dev *card)
1290{
1291 struct mspro_block_data *msb = memstick_get_drvdata(card);
1292
1293 return (msb->active == 1);
1294}
1295
1296static int mspro_block_probe(struct memstick_dev *card)
1297{
1298 struct mspro_block_data *msb;
1299 int rc = 0;
1300
1301 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1302 if (!msb)
1303 return -ENOMEM;
1304 memstick_set_drvdata(card, msb);
1305 msb->card = card;
f1d82698 1306 spin_lock_init(&msb->q_lock);
baf8532a
AD		 1307
1308 rc = mspro_block_init_card(card);
1309
1310 if (rc)
1311 goto out_free;
1312
1313 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1314 if (rc)
1315 goto out_free;
1316
1317 rc = mspro_block_init_disk(card);
1318 if (!rc) {
1319 card->check = mspro_block_check_card;
17017d8d
AD		 1320 card->stop = mspro_block_stop;
1321 card->start = mspro_block_start;
baf8532a
AD		 1322 return 0;
1323 }
1324
1325 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1326out_free:
1327 memstick_set_drvdata(card, NULL);
1328 mspro_block_data_clear(msb);
1329 kfree(msb);
1330 return rc;
1331}
1332
1333static void mspro_block_remove(struct memstick_dev *card)
1334{
1335 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1336 unsigned long flags;
1337
baf8532a 1338 spin_lock_irqsave(&msb->q_lock, flags);
f1d82698
AD		 1339 msb->eject = 1;
1340 blk_start_queue(msb->queue);
baf8532a
AD		 1341 spin_unlock_irqrestore(&msb->q_lock, flags);
1342
d862b13b
ML		 1343 del_gendisk(msb->disk);
1344 dev_dbg(&card->dev, "mspro block remove\n");
1345
baf8532a 1346 blk_cleanup_queue(msb->queue);
f1d82698 1347 msb->queue = NULL;
baf8532a
AD		 1348
1349 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1350
1351 mutex_lock(&mspro_block_disk_lock);
1352 mspro_block_data_clear(msb);
1353 mutex_unlock(&mspro_block_disk_lock);
1354
1355 mspro_block_disk_release(msb->disk);
1356 memstick_set_drvdata(card, NULL);
1357}
1358
1359#ifdef CONFIG_PM
1360
1361static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1362{
1363 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1364 unsigned long flags;
1365
1366 spin_lock_irqsave(&msb->q_lock, flags);
baf8532a 1367 blk_stop_queue(msb->queue);
f1d82698 1368 msb->active = 0;
baf8532a
AD		 1369 spin_unlock_irqrestore(&msb->q_lock, flags);
1370
baf8532a
AD		 1371 return 0;
1372}
1373
1374static int mspro_block_resume(struct memstick_dev *card)
1375{
1376 struct mspro_block_data *msb = memstick_get_drvdata(card);
1377 unsigned long flags;
1378 int rc = 0;
1379
1380#ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1381
1382 struct mspro_block_data *new_msb;
1383 struct memstick_host *host = card->host;
1384 struct mspro_sys_attr *s_attr, *r_attr;
1385 unsigned char cnt;
1386
1387 mutex_lock(&host->lock);
1388 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1389 if (!new_msb) {
1390 rc = -ENOMEM;
1391 goto out_unlock;
1392 }
1393
1394 new_msb->card = card;
1395 memstick_set_drvdata(card, new_msb);
1396 if (mspro_block_init_card(card))
1397 goto out_free;
1398
1399 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1400 && msb->attr_group.attrs[cnt]; ++cnt) {
1401 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1402 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1403
1404 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1405 && r_attr->id == s_attr->id) {
1406 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1407 break;
1408
f1d82698 1409 msb->active = 1;
baf8532a
AD		 1410 break;
1411 }
1412 }
1413
1414out_free:
1415 memstick_set_drvdata(card, msb);
1416 mspro_block_data_clear(new_msb);
1417 kfree(new_msb);
1418out_unlock:
1419 mutex_unlock(&host->lock);
1420
1421#endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1422
1423 spin_lock_irqsave(&msb->q_lock, flags);
1424 blk_start_queue(msb->queue);
1425 spin_unlock_irqrestore(&msb->q_lock, flags);
1426 return rc;
1427}
1428
1429#else
1430
1431#define mspro_block_suspend NULL
1432#define mspro_block_resume NULL
1433
1434#endif /* CONFIG_PM */
1435
1436static struct memstick_device_id mspro_block_id_tbl[] = {
1437 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
8e82f8c3 1438 MEMSTICK_CLASS_DUO},
baf8532a
AD		 1439 {}
1440};
1441
1442
1443static struct memstick_driver mspro_block_driver = {
1444 .driver = {
1445 .name = DRIVER_NAME,
1446 .owner = THIS_MODULE
1447 },
1448 .id_table = mspro_block_id_tbl,
1449 .probe = mspro_block_probe,
1450 .remove = mspro_block_remove,
1451 .suspend = mspro_block_suspend,
1452 .resume = mspro_block_resume
1453};
1454
1455static int __init mspro_block_init(void)
1456{
1457 int rc = -ENOMEM;
1458
1459 rc = register_blkdev(major, DRIVER_NAME);
1460 if (rc < 0) {
1461 printk(KERN_ERR DRIVER_NAME ": failed to register "
1462 "major %d, error %d\n", major, rc);
1463 return rc;
1464 }
1465 if (!major)
1466 major = rc;
1467
1468 rc = memstick_register_driver(&mspro_block_driver);
1469 if (rc)
1470 unregister_blkdev(major, DRIVER_NAME);
1471 return rc;
1472}
1473
1474static void __exit mspro_block_exit(void)
1475{
1476 memstick_unregister_driver(&mspro_block_driver);
1477 unregister_blkdev(major, DRIVER_NAME);
1478 idr_destroy(&mspro_block_disk_idr);
1479}
1480
1481module_init(mspro_block_init);
1482module_exit(mspro_block_exit);
1483
1484MODULE_LICENSE("GPL");
1485MODULE_AUTHOR("Alex Dubov");
1486MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1487MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
Linux 6.x block layer and io_uring tree(s)