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[net-next-2.6.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
AD		 22#include <linux/memstick.h>
23
24#define DRIVER_NAME "mspro_block"
baf8532a 25
2a48fc0a 26static DEFINE_MUTEX(mspro_block_mutex);
baf8532a
AD		 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
163 struct attribute_group attr_group;
164
165 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
166 unsigned int seg_count;
167 unsigned int current_seg;
f1d82698 168 unsigned int current_page;
baf8532a
AD		 169};
170
171static DEFINE_IDR(mspro_block_disk_idr);
172static DEFINE_MUTEX(mspro_block_disk_lock);
173
f1d82698
AD		 174static int mspro_block_complete_req(struct memstick_dev *card, int error);
175
baf8532a
AD		 176/*** Block device ***/
177
5d9a54b6 178static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
baf8532a 179{
5d9a54b6 180 struct gendisk *disk = bdev->bd_disk;
baf8532a
AD		 181 struct mspro_block_data *msb = disk->private_data;
182 int rc = -ENXIO;
183
2a48fc0a 184 mutex_lock(&mspro_block_mutex);
baf8532a
AD		 185 mutex_lock(&mspro_block_disk_lock);
186
187 if (msb && msb->card) {
188 msb->usage_count++;
5d9a54b6 189 if ((mode & FMODE_WRITE) && msb->read_only)
baf8532a
AD		 190 rc = -EROFS;
191 else
192 rc = 0;
193 }
194
195 mutex_unlock(&mspro_block_disk_lock);
2a48fc0a 196 mutex_unlock(&mspro_block_mutex);
baf8532a
AD		 197
198 return rc;
199}
200
201
202static int mspro_block_disk_release(struct gendisk *disk)
203{
204 struct mspro_block_data *msb = disk->private_data;
f331c029 205 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
baf8532a
AD		 206
207 mutex_lock(&mspro_block_disk_lock);
208
f1d82698
AD		 209 if (msb) {
210 if (msb->usage_count)
211 msb->usage_count--;
212
baf8532a
AD		 213 if (!msb->usage_count) {
214 kfree(msb);
215 disk->private_data = NULL;
216 idr_remove(&mspro_block_disk_idr, disk_id);
217 put_disk(disk);
218 }
219 }
220
221 mutex_unlock(&mspro_block_disk_lock);
222
223 return 0;
224}
225
5d9a54b6 226static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
baf8532a 227{
6e9624b8 228 int ret;
2a48fc0a 229 mutex_lock(&mspro_block_mutex);
6e9624b8 230 ret = mspro_block_disk_release(disk);
2a48fc0a 231 mutex_unlock(&mspro_block_mutex);
6e9624b8 232 return ret;
baf8532a
AD		 233}
234
235static int mspro_block_bd_getgeo(struct block_device *bdev,
236 struct hd_geometry *geo)
237{
238 struct mspro_block_data *msb = bdev->bd_disk->private_data;
239
240 geo->heads = msb->heads;
241 geo->sectors = msb->sectors_per_track;
242 geo->cylinders = msb->cylinders;
243
244 return 0;
245}
246
83d5cde4 247static const struct block_device_operations ms_block_bdops = {
5d9a54b6
AV		 248 .open = mspro_block_bd_open,
249 .release = mspro_block_bd_release,
baf8532a
AD		 250 .getgeo = mspro_block_bd_getgeo,
251 .owner = THIS_MODULE
252};
253
254/*** Information ***/
255
256static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
257{
258 struct device_attribute *dev_attr
259 = container_of(attr, struct device_attribute, attr);
260 return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
261}
262
263static const char *mspro_block_attr_name(unsigned char tag)
264{
265 switch (tag) {
266 case MSPRO_BLOCK_ID_SYSINFO:
267 return "attr_sysinfo";
268 case MSPRO_BLOCK_ID_MODELNAME:
269 return "attr_modelname";
270 case MSPRO_BLOCK_ID_MBR:
271 return "attr_mbr";
272 case MSPRO_BLOCK_ID_PBR16:
273 return "attr_pbr16";
274 case MSPRO_BLOCK_ID_PBR32:
275 return "attr_pbr32";
276 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
277 return "attr_specfilevalues1";
278 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
279 return "attr_specfilevalues2";
280 case MSPRO_BLOCK_ID_DEVINFO:
281 return "attr_devinfo";
282 default:
283 return NULL;
284 };
285}
286
287typedef ssize_t (*sysfs_show_t)(struct device *dev,
288 struct device_attribute *attr,
289 char *buffer);
290
291static ssize_t mspro_block_attr_show_default(struct device *dev,
292 struct device_attribute *attr,
293 char *buffer)
294{
295 struct mspro_sys_attr *s_attr = container_of(attr,
296 struct mspro_sys_attr,
297 dev_attr);
298
299 ssize_t cnt, rc = 0;
300
301 for (cnt = 0; cnt < s_attr->size; cnt++) {
302 if (cnt && !(cnt % 16)) {
303 if (PAGE_SIZE - rc)
304 buffer[rc++] = '\n';
305 }
306
307 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
308 ((unsigned char *)s_attr->data)[cnt]);
309 }
310 return rc;
311}
312
313static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
314 struct device_attribute *attr,
315 char *buffer)
316{
317 struct mspro_sys_attr *x_attr = container_of(attr,
318 struct mspro_sys_attr,
319 dev_attr);
320 struct mspro_sys_info *x_sys = x_attr->data;
321 ssize_t rc = 0;
251cc9b9
AD		 322 int date_tz = 0, date_tz_f = 0;
323
324 if (x_sys->assembly_date[0] > 0x80U) {
325 date_tz = (~x_sys->assembly_date[0]) + 1;
326 date_tz_f = date_tz & 3;
327 date_tz >>= 2;
328 date_tz = -date_tz;
329 date_tz_f *= 15;
330 } else if (x_sys->assembly_date[0] < 0x80U) {
331 date_tz = x_sys->assembly_date[0];
332 date_tz_f = date_tz & 3;
333 date_tz >>= 2;
334 date_tz_f *= 15;
335 }
baf8532a
AD		 336
337 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
338 x_sys->class);
339 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
340 be16_to_cpu(x_sys->block_size));
341 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
342 be16_to_cpu(x_sys->block_count));
343 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
344 be16_to_cpu(x_sys->user_block_count));
345 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
346 be16_to_cpu(x_sys->page_size));
347 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
251cc9b9
AD		 348 "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
349 date_tz, date_tz_f,
69347a23 350 be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
baf8532a
AD		 351 x_sys->assembly_date[3], x_sys->assembly_date[4],
352 x_sys->assembly_date[5], x_sys->assembly_date[6],
353 x_sys->assembly_date[7]);
354 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
355 be32_to_cpu(x_sys->serial_number));
356 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
357 "assembly maker code: %x\n",
358 x_sys->assembly_maker_code);
359 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
360 "%02x%02x%02x\n", x_sys->assembly_model_code[0],
361 x_sys->assembly_model_code[1],
362 x_sys->assembly_model_code[2]);
363 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
364 be16_to_cpu(x_sys->memory_maker_code));
365 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
366 be16_to_cpu(x_sys->memory_model_code));
367 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
368 x_sys->vcc);
369 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
370 x_sys->vpp);
371 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
372 be16_to_cpu(x_sys->controller_number));
373 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
374 "controller function: %x\n",
375 be16_to_cpu(x_sys->controller_function));
376 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
377 be16_to_cpu(x_sys->start_sector));
378 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
379 be16_to_cpu(x_sys->unit_size));
380 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
381 x_sys->ms_sub_class);
382 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
383 x_sys->interface_type);
384 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
385 be16_to_cpu(x_sys->controller_code));
386 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
387 x_sys->format_type);
388 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
389 x_sys->device_type);
390 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
391 x_sys->mspro_id);
392 return rc;
393}
394
395static ssize_t mspro_block_attr_show_modelname(struct device *dev,
396 struct device_attribute *attr,
397 char *buffer)
398{
399 struct mspro_sys_attr *s_attr = container_of(attr,
400 struct mspro_sys_attr,
401 dev_attr);
402
403 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
404}
405
406static ssize_t mspro_block_attr_show_mbr(struct device *dev,
407 struct device_attribute *attr,
408 char *buffer)
409{
410 struct mspro_sys_attr *x_attr = container_of(attr,
411 struct mspro_sys_attr,
412 dev_attr);
413 struct mspro_mbr *x_mbr = x_attr->data;
414 ssize_t rc = 0;
415
416 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
417 x_mbr->boot_partition);
418 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
419 x_mbr->start_head);
420 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
421 x_mbr->start_sector);
422 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
423 x_mbr->start_cylinder);
424 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
425 x_mbr->partition_type);
426 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
427 x_mbr->end_head);
428 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
429 x_mbr->end_sector);
430 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
431 x_mbr->end_cylinder);
432 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
433 x_mbr->start_sectors);
434 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
435 "sectors per partition: %x\n",
436 x_mbr->sectors_per_partition);
437 return rc;
438}
439
efb2742e
AD		 440static ssize_t mspro_block_attr_show_specfile(struct device *dev,
441 struct device_attribute *attr,
442 char *buffer)
443{
444 struct mspro_sys_attr *x_attr = container_of(attr,
445 struct mspro_sys_attr,
446 dev_attr);
447 struct mspro_specfile *x_spfile = x_attr->data;
448 char name[9], ext[4];
449 ssize_t rc = 0;
450
451 memcpy(name, x_spfile->name, 8);
452 name[8] = 0;
453 memcpy(ext, x_spfile->ext, 3);
454 ext[3] = 0;
455
456 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
457 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
458 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
459 x_spfile->attr);
460 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
461 x_spfile->time >> 11,
462 (x_spfile->time >> 5) & 0x3f,
463 (x_spfile->time & 0x1f) * 2);
464 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
465 (x_spfile->date >> 9) + 1980,
466 (x_spfile->date >> 5) & 0xf,
467 x_spfile->date & 0x1f);
468 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
469 x_spfile->cluster);
470 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
471 x_spfile->size);
472 return rc;
473}
474
baf8532a
AD		 475static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
476 struct device_attribute *attr,
477 char *buffer)
478{
479 struct mspro_sys_attr *x_attr = container_of(attr,
480 struct mspro_sys_attr,
481 dev_attr);
482 struct mspro_devinfo *x_devinfo = x_attr->data;
483 ssize_t rc = 0;
484
485 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
486 be16_to_cpu(x_devinfo->cylinders));
487 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
488 be16_to_cpu(x_devinfo->heads));
489 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
490 be16_to_cpu(x_devinfo->bytes_per_track));
491 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
492 be16_to_cpu(x_devinfo->bytes_per_sector));
493 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
494 be16_to_cpu(x_devinfo->sectors_per_track));
495 return rc;
496}
497
498static sysfs_show_t mspro_block_attr_show(unsigned char tag)
499{
500 switch (tag) {
501 case MSPRO_BLOCK_ID_SYSINFO:
502 return mspro_block_attr_show_sysinfo;
503 case MSPRO_BLOCK_ID_MODELNAME:
504 return mspro_block_attr_show_modelname;
505 case MSPRO_BLOCK_ID_MBR:
506 return mspro_block_attr_show_mbr;
efb2742e
AD		 507 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
508 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
509 return mspro_block_attr_show_specfile;
baf8532a
AD		 510 case MSPRO_BLOCK_ID_DEVINFO:
511 return mspro_block_attr_show_devinfo;
512 default:
513 return mspro_block_attr_show_default;
514 }
515}
516
517/*** Protocol handlers ***/
518
519/*
520 * Functions prefixed with "h_" are protocol callbacks. They can be called from
521 * interrupt context. Return value of 0 means that request processing is still
522 * ongoing, while special error value of -EAGAIN means that current request is
523 * finished (and request processor should come back some time later).
524 */
525
526static int h_mspro_block_req_init(struct memstick_dev *card,
527 struct memstick_request **mrq)
528{
529 struct mspro_block_data *msb = memstick_get_drvdata(card);
530
531 *mrq = &card->current_mrq;
532 card->next_request = msb->mrq_handler;
533 return 0;
534}
535
536static int h_mspro_block_default(struct memstick_dev *card,
537 struct memstick_request **mrq)
538{
f1d82698
AD		 539 return mspro_block_complete_req(card, (*mrq)->error);
540}
541
542static int h_mspro_block_default_bad(struct memstick_dev *card,
543 struct memstick_request **mrq)
544{
545 return -ENXIO;
baf8532a
AD		 546}
547
548static int h_mspro_block_get_ro(struct memstick_dev *card,
549 struct memstick_request **mrq)
550{
551 struct mspro_block_data *msb = memstick_get_drvdata(card);
552
f1d82698
AD		 553 if (!(*mrq)->error) {
554 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
555 & MEMSTICK_STATUS0_WP)
556 msb->read_only = 1;
557 else
558 msb->read_only = 0;
baf8532a
AD		 559 }
560
f1d82698 561 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 562}
563
564static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
565 struct memstick_request **mrq)
566{
baf8532a
AD		 567 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
568
f1d82698
AD		 569 if (!(*mrq)->error) {
570 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
571 (*mrq)->error = -EFAULT;
572 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
573 return 0;
baf8532a
AD		 574 }
575
f1d82698 576 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 577}
578
579static int h_mspro_block_transfer_data(struct memstick_dev *card,
580 struct memstick_request **mrq)
581{
baf8532a
AD		 582 struct mspro_block_data *msb = memstick_get_drvdata(card);
583 unsigned char t_val = 0;
584 struct scatterlist t_sg = { 0 };
585 size_t t_offset;
586
f1d82698
AD		 587 if ((*mrq)->error)
588 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 589
590 switch ((*mrq)->tpc) {
591 case MS_TPC_WRITE_REG:
592 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
ead70773 593 (*mrq)->need_card_int = 1;
baf8532a
AD		 594 return 0;
595 case MS_TPC_SET_CMD:
596 t_val = (*mrq)->int_reg;
597 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
ead70773 598 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
baf8532a
AD		 599 goto has_int_reg;
600 return 0;
601 case MS_TPC_GET_INT:
602 t_val = (*mrq)->data[0];
603has_int_reg:
604 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
605 t_val = MSPRO_CMD_STOP;
606 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
607 card->next_request = h_mspro_block_default;
608 return 0;
609 }
610
611 if (msb->current_page
612 == (msb->req_sg[msb->current_seg].length
613 / msb->page_size)) {
614 msb->current_page = 0;
615 msb->current_seg++;
616
617 if (msb->current_seg == msb->seg_count) {
618 if (t_val & MEMSTICK_INT_CED) {
f1d82698
AD		 619 return mspro_block_complete_req(card,
620 0);
baf8532a
AD		 621 } else {
622 card->next_request
623 = h_mspro_block_wait_for_ced;
624 memstick_init_req(*mrq, MS_TPC_GET_INT,
625 NULL, 1);
626 return 0;
627 }
628 }
629 }
630
631 if (!(t_val & MEMSTICK_INT_BREQ)) {
632 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
633 return 0;
634 }
635
636 t_offset = msb->req_sg[msb->current_seg].offset;
637 t_offset += msb->current_page * msb->page_size;
638
639 sg_set_page(&t_sg,
640 nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
641 t_offset >> PAGE_SHIFT),
642 msb->page_size, offset_in_page(t_offset));
643
644 memstick_init_req_sg(*mrq, msb->data_dir == READ
645 ? MS_TPC_READ_LONG_DATA
646 : MS_TPC_WRITE_LONG_DATA,
647 &t_sg);
ead70773 648 (*mrq)->need_card_int = 1;
baf8532a
AD		 649 return 0;
650 case MS_TPC_READ_LONG_DATA:
651 case MS_TPC_WRITE_LONG_DATA:
652 msb->current_page++;
ead70773 653 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
baf8532a
AD		 654 t_val = (*mrq)->int_reg;
655 goto has_int_reg;
656 } else {
657 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
658 return 0;
659 }
660
661 default:
662 BUG();
663 }
664}
665
666/*** Data transfer ***/
667
f1d82698 668static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
baf8532a
AD		 669{
670 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a 671 sector_t t_sec;
f1d82698
AD		 672 unsigned int count;
673 struct mspro_param_register param;
baf8532a 674
f1d82698
AD		 675try_again:
676 while (chunk) {
677 msb->current_page = 0;
baf8532a 678 msb->current_seg = 0;
f1d82698
AD		 679 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
680 msb->block_req,
681 msb->req_sg);
baf8532a 682
f1d82698 683 if (!msb->seg_count) {
296b2f6a 684 chunk = __blk_end_request_cur(msb->block_req, -ENOMEM);
f1d82698
AD		 685 continue;
686 }
baf8532a 687
83096ebf 688 t_sec = blk_rq_pos(msb->block_req) << 9;
f1d82698 689 sector_div(t_sec, msb->page_size);
baf8532a 690
1011c1b9 691 count = blk_rq_bytes(msb->block_req);
f1d82698 692 count /= msb->page_size;
baf8532a 693
f1d82698
AD		 694 param.system = msb->system;
695 param.data_count = cpu_to_be16(count);
696 param.data_address = cpu_to_be32((uint32_t)t_sec);
697 param.tpc_param = 0;
698
699 msb->data_dir = rq_data_dir(msb->block_req);
700 msb->transfer_cmd = msb->data_dir == READ
701 ? MSPRO_CMD_READ_DATA
702 : MSPRO_CMD_WRITE_DATA;
703
704 dev_dbg(&card->dev, "data transfer: cmd %x, "
705 "lba %x, count %x\n", msb->transfer_cmd,
706 be32_to_cpu(param.data_address), count);
707
708 card->next_request = h_mspro_block_req_init;
709 msb->mrq_handler = h_mspro_block_transfer_data;
710 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
711 &param, sizeof(param));
712 memstick_new_req(card->host);
713 return 0;
714 }
715
9934c8c0
TH		 716 dev_dbg(&card->dev, "blk_fetch\n");
717 msb->block_req = blk_fetch_request(msb->queue);
f1d82698
AD		 718 if (!msb->block_req) {
719 dev_dbg(&card->dev, "issue end\n");
720 return -EAGAIN;
721 }
722
723 dev_dbg(&card->dev, "trying again\n");
724 chunk = 1;
725 goto try_again;
baf8532a
AD		 726}
727
f1d82698 728static int mspro_block_complete_req(struct memstick_dev *card, int error)
baf8532a 729{
f1d82698
AD		 730 struct mspro_block_data *msb = memstick_get_drvdata(card);
731 int chunk, cnt;
732 unsigned int t_len = 0;
baf8532a
AD		 733 unsigned long flags;
734
735 spin_lock_irqsave(&msb->q_lock, flags);
f1d82698
AD		 736 dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
737 error);
738
739 if (msb->has_request) {
740 /* Nothing to do - not really an error */
741 if (error == -EAGAIN)
742 error = 0;
743
744 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
745 if (msb->data_dir == READ) {
746 for (cnt = 0; cnt < msb->current_seg; cnt++)
747 t_len += msb->req_sg[cnt].length
748 / msb->page_size;
749
750 if (msb->current_page)
751 t_len += msb->current_page - 1;
752
753 t_len *= msb->page_size;
754 }
755 } else
1011c1b9 756 t_len = blk_rq_bytes(msb->block_req);
f1d82698
AD		 757
758 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
759
760 if (error && !t_len)
761 t_len = blk_rq_cur_bytes(msb->block_req);
762
763 chunk = __blk_end_request(msb->block_req, error, t_len);
764
765 error = mspro_block_issue_req(card, chunk);
766
767 if (!error)
768 goto out;
769 else
770 msb->has_request = 0;
771 } else {
772 if (!error)
773 error = -EAGAIN;
774 }
775
776 card->next_request = h_mspro_block_default_bad;
777 complete_all(&card->mrq_complete);
778out:
baf8532a 779 spin_unlock_irqrestore(&msb->q_lock, flags);
f1d82698 780 return error;
baf8532a
AD		 781}
782
17017d8d
AD		 783static void mspro_block_stop(struct memstick_dev *card)
784{
785 struct mspro_block_data *msb = memstick_get_drvdata(card);
786 int rc = 0;
787 unsigned long flags;
788
789 while (1) {
790 spin_lock_irqsave(&msb->q_lock, flags);
791 if (!msb->has_request) {
792 blk_stop_queue(msb->queue);
793 rc = 1;
794 }
795 spin_unlock_irqrestore(&msb->q_lock, flags);
796
797 if (rc)
798 break;
799
800 wait_for_completion(&card->mrq_complete);
801 }
802}
803
804static void mspro_block_start(struct memstick_dev *card)
805{
806 struct mspro_block_data *msb = memstick_get_drvdata(card);
807 unsigned long flags;
808
809 spin_lock_irqsave(&msb->q_lock, flags);
810 blk_start_queue(msb->queue);
811 spin_unlock_irqrestore(&msb->q_lock, flags);
812}
813
f1d82698 814static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
baf8532a 815{
33659ebb
CH		 816 if (req->cmd_type != REQ_TYPE_FS &&
817 req->cmd_type != REQ_TYPE_BLOCK_PC) {
f1d82698
AD		 818 blk_dump_rq_flags(req, "MSPro unsupported request");
819 return BLKPREP_KILL;
820 }
baf8532a 821
f1d82698 822 req->cmd_flags |= REQ_DONTPREP;
baf8532a 823
f1d82698 824 return BLKPREP_OK;
baf8532a
AD		 825}
826
f1d82698 827static void mspro_block_submit_req(struct request_queue *q)
baf8532a
AD		 828{
829 struct memstick_dev *card = q->queuedata;
830 struct mspro_block_data *msb = memstick_get_drvdata(card);
831 struct request *req = NULL;
832
f1d82698
AD		 833 if (msb->has_request)
834 return;
835
836 if (msb->eject) {
9934c8c0 837 while ((req = blk_fetch_request(q)) != NULL)
40cbbb78 838 __blk_end_request_all(req, -ENODEV);
f1d82698
AD		 839
840 return;
baf8532a 841 }
f1d82698
AD		 842
843 msb->has_request = 1;
844 if (mspro_block_issue_req(card, 0))
845 msb->has_request = 0;
baf8532a
AD		 846}
847
848/*** Initialization ***/
849
850static int mspro_block_wait_for_ced(struct memstick_dev *card)
851{
852 struct mspro_block_data *msb = memstick_get_drvdata(card);
853
854 card->next_request = h_mspro_block_req_init;
855 msb->mrq_handler = h_mspro_block_wait_for_ced;
856 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
857 memstick_new_req(card->host);
858 wait_for_completion(&card->mrq_complete);
859 return card->current_mrq.error;
860}
861
962ee1b1
AD		 862static int mspro_block_set_interface(struct memstick_dev *card,
863 unsigned char sys_reg)
baf8532a
AD		 864{
865 struct memstick_host *host = card->host;
866 struct mspro_block_data *msb = memstick_get_drvdata(card);
867 struct mspro_param_register param = {
962ee1b1 868 .system = sys_reg,
baf8532a
AD		 869 .data_count = 0,
870 .data_address = 0,
e1f19995 871 .tpc_param = 0
baf8532a
AD		 872 };
873
874 card->next_request = h_mspro_block_req_init;
875 msb->mrq_handler = h_mspro_block_default;
876 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
877 sizeof(param));
878 memstick_new_req(host);
879 wait_for_completion(&card->mrq_complete);
962ee1b1
AD		 880 return card->current_mrq.error;
881}
882
883static int mspro_block_switch_interface(struct memstick_dev *card)
884{
885 struct memstick_host *host = card->host;
886 struct mspro_block_data *msb = memstick_get_drvdata(card);
887 int rc = 0;
888
8e82f8c3 889try_again:
962ee1b1
AD		 890 if (msb->caps & MEMSTICK_CAP_PAR4)
891 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
892 else
893 return 0;
894
895 if (rc) {
896 printk(KERN_WARNING
897 "%s: could not switch to 4-bit mode, error %d\n",
0252c3b4 898 dev_name(&card->dev), rc);
962ee1b1
AD		 899 return 0;
900 }
baf8532a 901
e1f19995
AD		 902 msb->system = MEMSTICK_SYS_PAR4;
903 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
962ee1b1 904 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
0252c3b4 905 dev_name(&card->dev));
962ee1b1
AD		 906
907 if (msb->caps & MEMSTICK_CAP_PAR8) {
908 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
909
910 if (!rc) {
911 msb->system = MEMSTICK_SYS_PAR8;
912 host->set_param(host, MEMSTICK_INTERFACE,
913 MEMSTICK_PAR8);
914 printk(KERN_INFO
915 "%s: switching to 8-bit parallel mode\n",
0252c3b4 916 dev_name(&card->dev));
962ee1b1
AD		 917 } else
918 printk(KERN_WARNING
919 "%s: could not switch to 8-bit mode, error %d\n",
0252c3b4 920 dev_name(&card->dev), rc);
962ee1b1 921 }
baf8532a
AD		 922
923 card->next_request = h_mspro_block_req_init;
924 msb->mrq_handler = h_mspro_block_default;
925 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
926 memstick_new_req(card->host);
927 wait_for_completion(&card->mrq_complete);
962ee1b1 928 rc = card->current_mrq.error;
baf8532a 929
962ee1b1
AD		 930 if (rc) {
931 printk(KERN_WARNING
932 "%s: interface error, trying to fall back to serial\n",
0252c3b4 933 dev_name(&card->dev));
59367258
AD		 934 msb->system = MEMSTICK_SYS_SERIAL;
935 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
962ee1b1 936 msleep(10);
59367258 937 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
baf8532a 938 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
59367258 939
962ee1b1
AD		 940 rc = memstick_set_rw_addr(card);
941 if (!rc)
942 rc = mspro_block_set_interface(card, msb->system);
8e82f8c3
AD		 943
944 if (!rc) {
945 msleep(150);
946 rc = mspro_block_wait_for_ced(card);
947 if (rc)
948 return rc;
949
950 if (msb->caps & MEMSTICK_CAP_PAR8) {
951 msb->caps &= ~MEMSTICK_CAP_PAR8;
952 goto try_again;
953 }
954 }
baf8532a 955 }
962ee1b1 956 return rc;
baf8532a
AD		 957}
958
959/* Memory allocated for attributes by this function should be freed by
960 * mspro_block_data_clear, no matter if the initialization process succeded
961 * or failed.
962 */
963static int mspro_block_read_attributes(struct memstick_dev *card)
964{
965 struct mspro_block_data *msb = memstick_get_drvdata(card);
966 struct mspro_param_register param = {
967 .system = msb->system,
968 .data_count = cpu_to_be16(1),
969 .data_address = 0,
e1f19995 970 .tpc_param = 0
baf8532a
AD		 971 };
972 struct mspro_attribute *attr = NULL;
973 struct mspro_sys_attr *s_attr = NULL;
974 unsigned char *buffer = NULL;
975 int cnt, rc, attr_count;
976 unsigned int addr;
977 unsigned short page_count;
978
979 attr = kmalloc(msb->page_size, GFP_KERNEL);
980 if (!attr)
981 return -ENOMEM;
982
983 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
984 msb->seg_count = 1;
985 msb->current_seg = 0;
986 msb->current_page = 0;
987 msb->data_dir = READ;
988 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
989
990 card->next_request = h_mspro_block_req_init;
991 msb->mrq_handler = h_mspro_block_transfer_data;
992 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
993 sizeof(param));
994 memstick_new_req(card->host);
995 wait_for_completion(&card->mrq_complete);
996 if (card->current_mrq.error) {
997 rc = card->current_mrq.error;
998 goto out_free_attr;
999 }
1000
1001 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
1002 printk(KERN_ERR "%s: unrecognized device signature %x\n",
0252c3b4 1003 dev_name(&card->dev), be16_to_cpu(attr->signature));
baf8532a
AD		 1004 rc = -ENODEV;
1005 goto out_free_attr;
1006 }
1007
1008 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1009 printk(KERN_WARNING "%s: way too many attribute entries\n",
0252c3b4 1010 dev_name(&card->dev));
baf8532a
AD		 1011 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1012 } else
1013 attr_count = attr->count;
1014
1015 msb->attr_group.attrs = kzalloc((attr_count + 1)
1016 * sizeof(struct attribute),
1017 GFP_KERNEL);
1018 if (!msb->attr_group.attrs) {
1019 rc = -ENOMEM;
1020 goto out_free_attr;
1021 }
1022 msb->attr_group.name = "media_attributes";
1023
1024 buffer = kmalloc(msb->page_size, GFP_KERNEL);
1025 if (!buffer) {
1026 rc = -ENOMEM;
1027 goto out_free_attr;
1028 }
1029 memcpy(buffer, (char *)attr, msb->page_size);
1030 page_count = 1;
1031
1032 for (cnt = 0; cnt < attr_count; ++cnt) {
1033 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1034 if (!s_attr) {
1035 rc = -ENOMEM;
1036 goto out_free_buffer;
1037 }
1038
1039 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1040 addr = be32_to_cpu(attr->entries[cnt].address);
1041 rc = be32_to_cpu(attr->entries[cnt].size);
1042 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1043 "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
1044 s_attr->id = attr->entries[cnt].id;
1045 if (mspro_block_attr_name(s_attr->id))
1046 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1047 mspro_block_attr_name(attr->entries[cnt].id));
1048 else
1049 snprintf(s_attr->name, sizeof(s_attr->name),
1050 "attr_x%02x", attr->entries[cnt].id);
1051
21fd0495 1052 sysfs_attr_init(&s_attr->dev_attr.attr);
baf8532a
AD		 1053 s_attr->dev_attr.attr.name = s_attr->name;
1054 s_attr->dev_attr.attr.mode = S_IRUGO;
baf8532a
AD		 1055 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1056
1057 if (!rc)
1058 continue;
1059
1060 s_attr->size = rc;
1061 s_attr->data = kmalloc(rc, GFP_KERNEL);
1062 if (!s_attr->data) {
1063 rc = -ENOMEM;
1064 goto out_free_buffer;
1065 }
1066
1067 if (((addr / msb->page_size)
1068 == be32_to_cpu(param.data_address))
1069 && (((addr + rc - 1) / msb->page_size)
1070 == be32_to_cpu(param.data_address))) {
1071 memcpy(s_attr->data, buffer + addr % msb->page_size,
1072 rc);
1073 continue;
1074 }
1075
1076 if (page_count <= (rc / msb->page_size)) {
1077 kfree(buffer);
1078 page_count = (rc / msb->page_size) + 1;
1079 buffer = kmalloc(page_count * msb->page_size,
1080 GFP_KERNEL);
1081 if (!buffer) {
1082 rc = -ENOMEM;
1083 goto out_free_attr;
1084 }
1085 }
1086
1087 param.system = msb->system;
1088 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
1089 param.data_address = cpu_to_be32(addr / msb->page_size);
e1f19995 1090 param.tpc_param = 0;
baf8532a
AD		 1091
1092 sg_init_one(&msb->req_sg[0], buffer,
1093 be16_to_cpu(param.data_count) * msb->page_size);
1094 msb->seg_count = 1;
1095 msb->current_seg = 0;
1096 msb->current_page = 0;
1097 msb->data_dir = READ;
1098 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1099
1100 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
1101 be32_to_cpu(param.data_address),
1102 be16_to_cpu(param.data_count));
1103
1104 card->next_request = h_mspro_block_req_init;
1105 msb->mrq_handler = h_mspro_block_transfer_data;
1106 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
1107 (char *)&param, sizeof(param));
1108 memstick_new_req(card->host);
1109 wait_for_completion(&card->mrq_complete);
1110 if (card->current_mrq.error) {
1111 rc = card->current_mrq.error;
1112 goto out_free_buffer;
1113 }
1114
1115 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
1116 }
1117
1118 rc = 0;
1119out_free_buffer:
1120 kfree(buffer);
1121out_free_attr:
1122 kfree(attr);
1123 return rc;
1124}
1125
1126static int mspro_block_init_card(struct memstick_dev *card)
1127{
1128 struct mspro_block_data *msb = memstick_get_drvdata(card);
1129 struct memstick_host *host = card->host;
1130 int rc = 0;
1131
e1f19995 1132 msb->system = MEMSTICK_SYS_SERIAL;
baf8532a
AD		 1133 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1134 card->reg_addr.r_length = sizeof(struct ms_status_register);
1135 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1136 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1137
1138 if (memstick_set_rw_addr(card))
1139 return -EIO;
1140
ead70773 1141 msb->caps = host->caps;
8e82f8c3
AD		 1142
1143 msleep(150);
1144 rc = mspro_block_wait_for_ced(card);
962ee1b1
AD		 1145 if (rc)
1146 return rc;
baf8532a 1147
8e82f8c3 1148 rc = mspro_block_switch_interface(card);
baf8532a
AD		 1149 if (rc)
1150 return rc;
8e82f8c3 1151
baf8532a 1152 dev_dbg(&card->dev, "card activated\n");
ead70773
AD		 1153 if (msb->system != MEMSTICK_SYS_SERIAL)
1154 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
baf8532a
AD		 1155
1156 card->next_request = h_mspro_block_req_init;
1157 msb->mrq_handler = h_mspro_block_get_ro;
1158 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1159 sizeof(struct ms_status_register));
1160 memstick_new_req(card->host);
1161 wait_for_completion(&card->mrq_complete);
1162 if (card->current_mrq.error)
1163 return card->current_mrq.error;
1164
1165 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1166
1167 msb->page_size = 512;
1168 rc = mspro_block_read_attributes(card);
1169 if (rc)
1170 return rc;
1171
1172 dev_dbg(&card->dev, "attributes loaded\n");
1173 return 0;
1174
1175}
1176
1177static int mspro_block_init_disk(struct memstick_dev *card)
1178{
1179 struct mspro_block_data *msb = memstick_get_drvdata(card);
1180 struct memstick_host *host = card->host;
1181 struct mspro_devinfo *dev_info = NULL;
1182 struct mspro_sys_info *sys_info = NULL;
1183 struct mspro_sys_attr *s_attr = NULL;
1184 int rc, disk_id;
1185 u64 limit = BLK_BOUNCE_HIGH;
1186 unsigned long capacity;
1187
c4c66cf1
GKH		 1188 if (host->dev.dma_mask && *(host->dev.dma_mask))
1189 limit = *(host->dev.dma_mask);
baf8532a
AD		 1190
1191 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1192 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1193
1194 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1195 dev_info = s_attr->data;
1196 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1197 sys_info = s_attr->data;
1198 }
1199
1200 if (!dev_info || !sys_info)
1201 return -ENODEV;
1202
1203 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1204 msb->heads = be16_to_cpu(dev_info->heads);
1205 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1206
1207 msb->page_size = be16_to_cpu(sys_info->unit_size);
1208
1209 if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1210 return -ENOMEM;
1211
1212 mutex_lock(&mspro_block_disk_lock);
1213 rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1214 mutex_unlock(&mspro_block_disk_lock);
1215
1216 if (rc)
1217 return rc;
1218
8e82f8c3 1219 if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
baf8532a
AD		 1220 rc = -ENOSPC;
1221 goto out_release_id;
1222 }
1223
8e82f8c3 1224 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
baf8532a
AD		 1225 if (!msb->disk) {
1226 rc = -ENOMEM;
1227 goto out_release_id;
1228 }
1229
f1d82698 1230 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
baf8532a
AD		 1231 if (!msb->queue) {
1232 rc = -ENOMEM;
1233 goto out_put_disk;
1234 }
1235
1236 msb->queue->queuedata = card;
f1d82698 1237 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
baf8532a
AD		 1238
1239 blk_queue_bounce_limit(msb->queue, limit);
086fa5ff 1240 blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
8a78362c 1241 blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
baf8532a
AD		 1242 blk_queue_max_segment_size(msb->queue,
1243 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1244
1245 msb->disk->major = major;
8e82f8c3 1246 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
baf8532a
AD		 1247 msb->disk->fops = &ms_block_bdops;
1248 msb->usage_count = 1;
1249 msb->disk->private_data = msb;
1250 msb->disk->queue = msb->queue;
1251 msb->disk->driverfs_dev = &card->dev;
1252
1253 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1254
e1defc4f 1255 blk_queue_logical_block_size(msb->queue, msb->page_size);
baf8532a
AD		 1256
1257 capacity = be16_to_cpu(sys_info->user_block_count);
1258 capacity *= be16_to_cpu(sys_info->block_size);
1259 capacity *= msb->page_size >> 9;
1260 set_capacity(msb->disk, capacity);
1261 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
baf8532a 1262
baf8532a 1263 add_disk(msb->disk);
baf8532a
AD		 1264 msb->active = 1;
1265 return 0;
1266
1267out_put_disk:
1268 put_disk(msb->disk);
1269out_release_id:
1270 mutex_lock(&mspro_block_disk_lock);
1271 idr_remove(&mspro_block_disk_idr, disk_id);
1272 mutex_unlock(&mspro_block_disk_lock);
1273 return rc;
1274}
1275
1276static void mspro_block_data_clear(struct mspro_block_data *msb)
1277{
1278 int cnt;
1279 struct mspro_sys_attr *s_attr;
1280
1281 if (msb->attr_group.attrs) {
1282 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1283 s_attr = mspro_from_sysfs_attr(msb->attr_group
1284 .attrs[cnt]);
1285 kfree(s_attr->data);
1286 kfree(s_attr);
1287 }
1288 kfree(msb->attr_group.attrs);
1289 }
1290
1291 msb->card = NULL;
1292}
1293
1294static int mspro_block_check_card(struct memstick_dev *card)
1295{
1296 struct mspro_block_data *msb = memstick_get_drvdata(card);
1297
1298 return (msb->active == 1);
1299}
1300
1301static int mspro_block_probe(struct memstick_dev *card)
1302{
1303 struct mspro_block_data *msb;
1304 int rc = 0;
1305
1306 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1307 if (!msb)
1308 return -ENOMEM;
1309 memstick_set_drvdata(card, msb);
1310 msb->card = card;
f1d82698 1311 spin_lock_init(&msb->q_lock);
baf8532a
AD		 1312
1313 rc = mspro_block_init_card(card);
1314
1315 if (rc)
1316 goto out_free;
1317
1318 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1319 if (rc)
1320 goto out_free;
1321
1322 rc = mspro_block_init_disk(card);
1323 if (!rc) {
1324 card->check = mspro_block_check_card;
17017d8d
AD		 1325 card->stop = mspro_block_stop;
1326 card->start = mspro_block_start;
baf8532a
AD		 1327 return 0;
1328 }
1329
1330 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1331out_free:
1332 memstick_set_drvdata(card, NULL);
1333 mspro_block_data_clear(msb);
1334 kfree(msb);
1335 return rc;
1336}
1337
1338static void mspro_block_remove(struct memstick_dev *card)
1339{
1340 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1341 unsigned long flags;
1342
baf8532a 1343 spin_lock_irqsave(&msb->q_lock, flags);
f1d82698
AD		 1344 msb->eject = 1;
1345 blk_start_queue(msb->queue);
baf8532a
AD		 1346 spin_unlock_irqrestore(&msb->q_lock, flags);
1347
d862b13b
ML		 1348 del_gendisk(msb->disk);
1349 dev_dbg(&card->dev, "mspro block remove\n");
1350
baf8532a 1351 blk_cleanup_queue(msb->queue);
f1d82698 1352 msb->queue = NULL;
baf8532a
AD		 1353
1354 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1355
1356 mutex_lock(&mspro_block_disk_lock);
1357 mspro_block_data_clear(msb);
1358 mutex_unlock(&mspro_block_disk_lock);
1359
1360 mspro_block_disk_release(msb->disk);
1361 memstick_set_drvdata(card, NULL);
1362}
1363
1364#ifdef CONFIG_PM
1365
1366static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1367{
1368 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1369 unsigned long flags;
1370
1371 spin_lock_irqsave(&msb->q_lock, flags);
baf8532a 1372 blk_stop_queue(msb->queue);
f1d82698 1373 msb->active = 0;
baf8532a
AD		 1374 spin_unlock_irqrestore(&msb->q_lock, flags);
1375
baf8532a
AD		 1376 return 0;
1377}
1378
1379static int mspro_block_resume(struct memstick_dev *card)
1380{
1381 struct mspro_block_data *msb = memstick_get_drvdata(card);
1382 unsigned long flags;
1383 int rc = 0;
1384
1385#ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1386
1387 struct mspro_block_data *new_msb;
1388 struct memstick_host *host = card->host;
1389 struct mspro_sys_attr *s_attr, *r_attr;
1390 unsigned char cnt;
1391
1392 mutex_lock(&host->lock);
1393 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1394 if (!new_msb) {
1395 rc = -ENOMEM;
1396 goto out_unlock;
1397 }
1398
1399 new_msb->card = card;
1400 memstick_set_drvdata(card, new_msb);
1401 if (mspro_block_init_card(card))
1402 goto out_free;
1403
1404 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1405 && msb->attr_group.attrs[cnt]; ++cnt) {
1406 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1407 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1408
1409 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1410 && r_attr->id == s_attr->id) {
1411 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1412 break;
1413
f1d82698 1414 msb->active = 1;
baf8532a
AD		 1415 break;
1416 }
1417 }
1418
1419out_free:
1420 memstick_set_drvdata(card, msb);
1421 mspro_block_data_clear(new_msb);
1422 kfree(new_msb);
1423out_unlock:
1424 mutex_unlock(&host->lock);
1425
1426#endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1427
1428 spin_lock_irqsave(&msb->q_lock, flags);
1429 blk_start_queue(msb->queue);
1430 spin_unlock_irqrestore(&msb->q_lock, flags);
1431 return rc;
1432}
1433
1434#else
1435
1436#define mspro_block_suspend NULL
1437#define mspro_block_resume NULL
1438
1439#endif /* CONFIG_PM */
1440
1441static struct memstick_device_id mspro_block_id_tbl[] = {
1442 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
8e82f8c3 1443 MEMSTICK_CLASS_DUO},
baf8532a
AD		 1444 {}
1445};
1446
1447
1448static struct memstick_driver mspro_block_driver = {
1449 .driver = {
1450 .name = DRIVER_NAME,
1451 .owner = THIS_MODULE
1452 },
1453 .id_table = mspro_block_id_tbl,
1454 .probe = mspro_block_probe,
1455 .remove = mspro_block_remove,
1456 .suspend = mspro_block_suspend,
1457 .resume = mspro_block_resume
1458};
1459
1460static int __init mspro_block_init(void)
1461{
1462 int rc = -ENOMEM;
1463
1464 rc = register_blkdev(major, DRIVER_NAME);
1465 if (rc < 0) {
1466 printk(KERN_ERR DRIVER_NAME ": failed to register "
1467 "major %d, error %d\n", major, rc);
1468 return rc;
1469 }
1470 if (!major)
1471 major = rc;
1472
1473 rc = memstick_register_driver(&mspro_block_driver);
1474 if (rc)
1475 unregister_blkdev(major, DRIVER_NAME);
1476 return rc;
1477}
1478
1479static void __exit mspro_block_exit(void)
1480{
1481 memstick_unregister_driver(&mspro_block_driver);
1482 unregister_blkdev(major, DRIVER_NAME);
1483 idr_destroy(&mspro_block_disk_idr);
1484}
1485
1486module_init(mspro_block_init);
1487module_exit(mspro_block_exit);
1488
1489MODULE_LICENSE("GPL");
1490MODULE_AUTHOR("Alex Dubov");
1491MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1492MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
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