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memstick: add support for decoding "specfile" media attributes
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / memstick / core / mspro_block.c
CommitLineData
baf8532a
AD		 1/*
2 * Sony MemoryStick Pro storage support
3 *
4 * Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * Special thanks to Carlos Corbacho for providing various MemoryStick cards
11 * that made this driver possible.
12 *
13 */
14
15#include <linux/blkdev.h>
16#include <linux/idr.h>
17#include <linux/hdreg.h>
18#include <linux/kthread.h>
19#include <linux/memstick.h>
20
21#define DRIVER_NAME "mspro_block"
baf8532a
AD		 22
23static int major;
24module_param(major, int, 0644);
25
26#define MSPRO_BLOCK_MAX_SEGS 32
27#define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
28
29#define MSPRO_BLOCK_SIGNATURE 0xa5c3
30#define MSPRO_BLOCK_MAX_ATTRIBUTES 41
31
32enum {
33 MSPRO_BLOCK_ID_SYSINFO = 0x10,
34 MSPRO_BLOCK_ID_MODELNAME = 0x15,
35 MSPRO_BLOCK_ID_MBR = 0x20,
36 MSPRO_BLOCK_ID_PBR16 = 0x21,
37 MSPRO_BLOCK_ID_PBR32 = 0x22,
38 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
39 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
40 MSPRO_BLOCK_ID_DEVINFO = 0x30
41};
42
43struct mspro_sys_attr {
44 size_t size;
45 void *data;
46 unsigned char id;
47 char name[32];
48 struct device_attribute dev_attr;
49};
50
51struct mspro_attr_entry {
52 unsigned int address;
53 unsigned int size;
54 unsigned char id;
55 unsigned char reserved[3];
56} __attribute__((packed));
57
58struct mspro_attribute {
59 unsigned short signature;
60 unsigned short version;
61 unsigned char count;
62 unsigned char reserved[11];
63 struct mspro_attr_entry entries[];
64} __attribute__((packed));
65
66struct mspro_sys_info {
67 unsigned char class;
68 unsigned char reserved0;
69 unsigned short block_size;
70 unsigned short block_count;
71 unsigned short user_block_count;
72 unsigned short page_size;
73 unsigned char reserved1[2];
74 unsigned char assembly_date[8];
75 unsigned int serial_number;
76 unsigned char assembly_maker_code;
77 unsigned char assembly_model_code[3];
78 unsigned short memory_maker_code;
79 unsigned short memory_model_code;
80 unsigned char reserved2[4];
81 unsigned char vcc;
82 unsigned char vpp;
83 unsigned short controller_number;
84 unsigned short controller_function;
85 unsigned short start_sector;
86 unsigned short unit_size;
87 unsigned char ms_sub_class;
88 unsigned char reserved3[4];
89 unsigned char interface_type;
90 unsigned short controller_code;
91 unsigned char format_type;
92 unsigned char reserved4;
93 unsigned char device_type;
94 unsigned char reserved5[7];
95 unsigned char mspro_id[16];
96 unsigned char reserved6[16];
97} __attribute__((packed));
98
99struct mspro_mbr {
100 unsigned char boot_partition;
101 unsigned char start_head;
102 unsigned char start_sector;
103 unsigned char start_cylinder;
104 unsigned char partition_type;
105 unsigned char end_head;
106 unsigned char end_sector;
107 unsigned char end_cylinder;
108 unsigned int start_sectors;
109 unsigned int sectors_per_partition;
110} __attribute__((packed));
111
efb2742e
AD		 112struct mspro_specfile {
113 char name[8];
114 char ext[3];
115 unsigned char attr;
116 unsigned char reserved[10];
117 unsigned short time;
118 unsigned short date;
119 unsigned short cluster;
120 unsigned int size;
121} __attribute__((packed));
122
baf8532a
AD		 123struct mspro_devinfo {
124 unsigned short cylinders;
125 unsigned short heads;
126 unsigned short bytes_per_track;
127 unsigned short bytes_per_sector;
128 unsigned short sectors_per_track;
129 unsigned char reserved[6];
130} __attribute__((packed));
131
132struct mspro_block_data {
133 struct memstick_dev *card;
134 unsigned int usage_count;
135 struct gendisk *disk;
136 struct request_queue *queue;
137 spinlock_t q_lock;
138 wait_queue_head_t q_wait;
139 struct task_struct *q_thread;
140
141 unsigned short page_size;
142 unsigned short cylinders;
143 unsigned short heads;
144 unsigned short sectors_per_track;
145
146 unsigned char system;
147 unsigned char read_only:1,
148 active:1,
149 has_request:1,
150 data_dir:1;
151 unsigned char transfer_cmd;
152
153 int (*mrq_handler)(struct memstick_dev *card,
154 struct memstick_request **mrq);
155
156 struct attribute_group attr_group;
157
158 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
159 unsigned int seg_count;
160 unsigned int current_seg;
161 unsigned short current_page;
162};
163
164static DEFINE_IDR(mspro_block_disk_idr);
165static DEFINE_MUTEX(mspro_block_disk_lock);
166
167/*** Block device ***/
168
169static int mspro_block_bd_open(struct inode *inode, struct file *filp)
170{
171 struct gendisk *disk = inode->i_bdev->bd_disk;
172 struct mspro_block_data *msb = disk->private_data;
173 int rc = -ENXIO;
174
175 mutex_lock(&mspro_block_disk_lock);
176
177 if (msb && msb->card) {
178 msb->usage_count++;
179 if ((filp->f_mode & FMODE_WRITE) && msb->read_only)
180 rc = -EROFS;
181 else
182 rc = 0;
183 }
184
185 mutex_unlock(&mspro_block_disk_lock);
186
187 return rc;
188}
189
190
191static int mspro_block_disk_release(struct gendisk *disk)
192{
193 struct mspro_block_data *msb = disk->private_data;
194 int disk_id = disk->first_minor >> MEMSTICK_PART_SHIFT;
195
196 mutex_lock(&mspro_block_disk_lock);
197
198 if (msb->usage_count) {
199 msb->usage_count--;
200 if (!msb->usage_count) {
201 kfree(msb);
202 disk->private_data = NULL;
203 idr_remove(&mspro_block_disk_idr, disk_id);
204 put_disk(disk);
205 }
206 }
207
208 mutex_unlock(&mspro_block_disk_lock);
209
210 return 0;
211}
212
213static int mspro_block_bd_release(struct inode *inode, struct file *filp)
214{
215 struct gendisk *disk = inode->i_bdev->bd_disk;
216 return mspro_block_disk_release(disk);
217}
218
219static int mspro_block_bd_getgeo(struct block_device *bdev,
220 struct hd_geometry *geo)
221{
222 struct mspro_block_data *msb = bdev->bd_disk->private_data;
223
224 geo->heads = msb->heads;
225 geo->sectors = msb->sectors_per_track;
226 geo->cylinders = msb->cylinders;
227
228 return 0;
229}
230
231static struct block_device_operations ms_block_bdops = {
232 .open = mspro_block_bd_open,
233 .release = mspro_block_bd_release,
234 .getgeo = mspro_block_bd_getgeo,
235 .owner = THIS_MODULE
236};
237
238/*** Information ***/
239
240static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
241{
242 struct device_attribute *dev_attr
243 = container_of(attr, struct device_attribute, attr);
244 return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
245}
246
247static const char *mspro_block_attr_name(unsigned char tag)
248{
249 switch (tag) {
250 case MSPRO_BLOCK_ID_SYSINFO:
251 return "attr_sysinfo";
252 case MSPRO_BLOCK_ID_MODELNAME:
253 return "attr_modelname";
254 case MSPRO_BLOCK_ID_MBR:
255 return "attr_mbr";
256 case MSPRO_BLOCK_ID_PBR16:
257 return "attr_pbr16";
258 case MSPRO_BLOCK_ID_PBR32:
259 return "attr_pbr32";
260 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
261 return "attr_specfilevalues1";
262 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
263 return "attr_specfilevalues2";
264 case MSPRO_BLOCK_ID_DEVINFO:
265 return "attr_devinfo";
266 default:
267 return NULL;
268 };
269}
270
271typedef ssize_t (*sysfs_show_t)(struct device *dev,
272 struct device_attribute *attr,
273 char *buffer);
274
275static ssize_t mspro_block_attr_show_default(struct device *dev,
276 struct device_attribute *attr,
277 char *buffer)
278{
279 struct mspro_sys_attr *s_attr = container_of(attr,
280 struct mspro_sys_attr,
281 dev_attr);
282
283 ssize_t cnt, rc = 0;
284
285 for (cnt = 0; cnt < s_attr->size; cnt++) {
286 if (cnt && !(cnt % 16)) {
287 if (PAGE_SIZE - rc)
288 buffer[rc++] = '\n';
289 }
290
291 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
292 ((unsigned char *)s_attr->data)[cnt]);
293 }
294 return rc;
295}
296
297static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
298 struct device_attribute *attr,
299 char *buffer)
300{
301 struct mspro_sys_attr *x_attr = container_of(attr,
302 struct mspro_sys_attr,
303 dev_attr);
304 struct mspro_sys_info *x_sys = x_attr->data;
305 ssize_t rc = 0;
306
307 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
308 x_sys->class);
309 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
310 be16_to_cpu(x_sys->block_size));
311 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
312 be16_to_cpu(x_sys->block_count));
313 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
314 be16_to_cpu(x_sys->user_block_count));
315 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
316 be16_to_cpu(x_sys->page_size));
317 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
318 "%d %04u-%02u-%02u %02u:%02u:%02u\n",
319 x_sys->assembly_date[0],
320 be16_to_cpu(*(unsigned short *)
321 &x_sys->assembly_date[1]),
322 x_sys->assembly_date[3], x_sys->assembly_date[4],
323 x_sys->assembly_date[5], x_sys->assembly_date[6],
324 x_sys->assembly_date[7]);
325 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
326 be32_to_cpu(x_sys->serial_number));
327 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
328 "assembly maker code: %x\n",
329 x_sys->assembly_maker_code);
330 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
331 "%02x%02x%02x\n", x_sys->assembly_model_code[0],
332 x_sys->assembly_model_code[1],
333 x_sys->assembly_model_code[2]);
334 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
335 be16_to_cpu(x_sys->memory_maker_code));
336 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
337 be16_to_cpu(x_sys->memory_model_code));
338 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
339 x_sys->vcc);
340 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
341 x_sys->vpp);
342 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
343 be16_to_cpu(x_sys->controller_number));
344 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
345 "controller function: %x\n",
346 be16_to_cpu(x_sys->controller_function));
347 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
348 be16_to_cpu(x_sys->start_sector));
349 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
350 be16_to_cpu(x_sys->unit_size));
351 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
352 x_sys->ms_sub_class);
353 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
354 x_sys->interface_type);
355 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
356 be16_to_cpu(x_sys->controller_code));
357 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
358 x_sys->format_type);
359 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
360 x_sys->device_type);
361 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
362 x_sys->mspro_id);
363 return rc;
364}
365
366static ssize_t mspro_block_attr_show_modelname(struct device *dev,
367 struct device_attribute *attr,
368 char *buffer)
369{
370 struct mspro_sys_attr *s_attr = container_of(attr,
371 struct mspro_sys_attr,
372 dev_attr);
373
374 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
375}
376
377static ssize_t mspro_block_attr_show_mbr(struct device *dev,
378 struct device_attribute *attr,
379 char *buffer)
380{
381 struct mspro_sys_attr *x_attr = container_of(attr,
382 struct mspro_sys_attr,
383 dev_attr);
384 struct mspro_mbr *x_mbr = x_attr->data;
385 ssize_t rc = 0;
386
387 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
388 x_mbr->boot_partition);
389 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
390 x_mbr->start_head);
391 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
392 x_mbr->start_sector);
393 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
394 x_mbr->start_cylinder);
395 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
396 x_mbr->partition_type);
397 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
398 x_mbr->end_head);
399 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
400 x_mbr->end_sector);
401 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
402 x_mbr->end_cylinder);
403 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
404 x_mbr->start_sectors);
405 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
406 "sectors per partition: %x\n",
407 x_mbr->sectors_per_partition);
408 return rc;
409}
410
efb2742e
AD		 411static ssize_t mspro_block_attr_show_specfile(struct device *dev,
412 struct device_attribute *attr,
413 char *buffer)
414{
415 struct mspro_sys_attr *x_attr = container_of(attr,
416 struct mspro_sys_attr,
417 dev_attr);
418 struct mspro_specfile *x_spfile = x_attr->data;
419 char name[9], ext[4];
420 ssize_t rc = 0;
421
422 memcpy(name, x_spfile->name, 8);
423 name[8] = 0;
424 memcpy(ext, x_spfile->ext, 3);
425 ext[3] = 0;
426
427 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
428 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
429 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
430 x_spfile->attr);
431 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
432 x_spfile->time >> 11,
433 (x_spfile->time >> 5) & 0x3f,
434 (x_spfile->time & 0x1f) * 2);
435 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
436 (x_spfile->date >> 9) + 1980,
437 (x_spfile->date >> 5) & 0xf,
438 x_spfile->date & 0x1f);
439 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
440 x_spfile->cluster);
441 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
442 x_spfile->size);
443 return rc;
444}
445
baf8532a
AD		 446static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
447 struct device_attribute *attr,
448 char *buffer)
449{
450 struct mspro_sys_attr *x_attr = container_of(attr,
451 struct mspro_sys_attr,
452 dev_attr);
453 struct mspro_devinfo *x_devinfo = x_attr->data;
454 ssize_t rc = 0;
455
456 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
457 be16_to_cpu(x_devinfo->cylinders));
458 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
459 be16_to_cpu(x_devinfo->heads));
460 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
461 be16_to_cpu(x_devinfo->bytes_per_track));
462 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
463 be16_to_cpu(x_devinfo->bytes_per_sector));
464 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
465 be16_to_cpu(x_devinfo->sectors_per_track));
466 return rc;
467}
468
469static sysfs_show_t mspro_block_attr_show(unsigned char tag)
470{
471 switch (tag) {
472 case MSPRO_BLOCK_ID_SYSINFO:
473 return mspro_block_attr_show_sysinfo;
474 case MSPRO_BLOCK_ID_MODELNAME:
475 return mspro_block_attr_show_modelname;
476 case MSPRO_BLOCK_ID_MBR:
477 return mspro_block_attr_show_mbr;
efb2742e
AD		 478 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
479 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
480 return mspro_block_attr_show_specfile;
baf8532a
AD		 481 case MSPRO_BLOCK_ID_DEVINFO:
482 return mspro_block_attr_show_devinfo;
483 default:
484 return mspro_block_attr_show_default;
485 }
486}
487
488/*** Protocol handlers ***/
489
490/*
491 * Functions prefixed with "h_" are protocol callbacks. They can be called from
492 * interrupt context. Return value of 0 means that request processing is still
493 * ongoing, while special error value of -EAGAIN means that current request is
494 * finished (and request processor should come back some time later).
495 */
496
497static int h_mspro_block_req_init(struct memstick_dev *card,
498 struct memstick_request **mrq)
499{
500 struct mspro_block_data *msb = memstick_get_drvdata(card);
501
502 *mrq = &card->current_mrq;
503 card->next_request = msb->mrq_handler;
504 return 0;
505}
506
507static int h_mspro_block_default(struct memstick_dev *card,
508 struct memstick_request **mrq)
509{
510 complete(&card->mrq_complete);
511 if (!(*mrq)->error)
512 return -EAGAIN;
513 else
514 return (*mrq)->error;
515}
516
517static int h_mspro_block_get_ro(struct memstick_dev *card,
518 struct memstick_request **mrq)
519{
520 struct mspro_block_data *msb = memstick_get_drvdata(card);
521
522 if ((*mrq)->error) {
523 complete(&card->mrq_complete);
524 return (*mrq)->error;
525 }
526
527 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
528 & MEMSTICK_STATUS0_WP)
529 msb->read_only = 1;
530 else
531 msb->read_only = 0;
532
533 complete(&card->mrq_complete);
534 return -EAGAIN;
535}
536
537static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
538 struct memstick_request **mrq)
539{
540 if ((*mrq)->error) {
541 complete(&card->mrq_complete);
542 return (*mrq)->error;
543 }
544
545 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
546
547 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
548 card->current_mrq.error = -EFAULT;
549 complete(&card->mrq_complete);
550 return card->current_mrq.error;
551 }
552
553 if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
554 return 0;
555 else {
556 card->current_mrq.error = 0;
557 complete(&card->mrq_complete);
558 return -EAGAIN;
559 }
560}
561
562static int h_mspro_block_transfer_data(struct memstick_dev *card,
563 struct memstick_request **mrq)
564{
565 struct memstick_host *host = card->host;
566 struct mspro_block_data *msb = memstick_get_drvdata(card);
567 unsigned char t_val = 0;
568 struct scatterlist t_sg = { 0 };
569 size_t t_offset;
570
571 if ((*mrq)->error) {
572 complete(&card->mrq_complete);
573 return (*mrq)->error;
574 }
575
576 switch ((*mrq)->tpc) {
577 case MS_TPC_WRITE_REG:
578 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
579 (*mrq)->get_int_reg = 1;
580 return 0;
581 case MS_TPC_SET_CMD:
582 t_val = (*mrq)->int_reg;
583 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
584 if (host->caps & MEMSTICK_CAP_AUTO_GET_INT)
585 goto has_int_reg;
586 return 0;
587 case MS_TPC_GET_INT:
588 t_val = (*mrq)->data[0];
589has_int_reg:
590 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
591 t_val = MSPRO_CMD_STOP;
592 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
593 card->next_request = h_mspro_block_default;
594 return 0;
595 }
596
597 if (msb->current_page
598 == (msb->req_sg[msb->current_seg].length
599 / msb->page_size)) {
600 msb->current_page = 0;
601 msb->current_seg++;
602
603 if (msb->current_seg == msb->seg_count) {
604 if (t_val & MEMSTICK_INT_CED) {
605 complete(&card->mrq_complete);
606 return -EAGAIN;
607 } else {
608 card->next_request
609 = h_mspro_block_wait_for_ced;
610 memstick_init_req(*mrq, MS_TPC_GET_INT,
611 NULL, 1);
612 return 0;
613 }
614 }
615 }
616
617 if (!(t_val & MEMSTICK_INT_BREQ)) {
618 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
619 return 0;
620 }
621
622 t_offset = msb->req_sg[msb->current_seg].offset;
623 t_offset += msb->current_page * msb->page_size;
624
625 sg_set_page(&t_sg,
626 nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
627 t_offset >> PAGE_SHIFT),
628 msb->page_size, offset_in_page(t_offset));
629
630 memstick_init_req_sg(*mrq, msb->data_dir == READ
631 ? MS_TPC_READ_LONG_DATA
632 : MS_TPC_WRITE_LONG_DATA,
633 &t_sg);
634 (*mrq)->get_int_reg = 1;
635 return 0;
636 case MS_TPC_READ_LONG_DATA:
637 case MS_TPC_WRITE_LONG_DATA:
638 msb->current_page++;
639 if (host->caps & MEMSTICK_CAP_AUTO_GET_INT) {
640 t_val = (*mrq)->int_reg;
641 goto has_int_reg;
642 } else {
643 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
644 return 0;
645 }
646
647 default:
648 BUG();
649 }
650}
651
652/*** Data transfer ***/
653
654static void mspro_block_process_request(struct memstick_dev *card,
655 struct request *req)
656{
657 struct mspro_block_data *msb = memstick_get_drvdata(card);
658 struct mspro_param_register param;
659 int rc, chunk, cnt;
660 unsigned short page_count;
661 sector_t t_sec;
662 unsigned long flags;
663
664 do {
665 page_count = 0;
666 msb->current_seg = 0;
667 msb->seg_count = blk_rq_map_sg(req->q, req, msb->req_sg);
668
669 if (msb->seg_count) {
670 msb->current_page = 0;
671 for (rc = 0; rc < msb->seg_count; rc++)
672 page_count += msb->req_sg[rc].length
673 / msb->page_size;
674
675 t_sec = req->sector;
676 sector_div(t_sec, msb->page_size >> 9);
677 param.system = msb->system;
678 param.data_count = cpu_to_be16(page_count);
679 param.data_address = cpu_to_be32((uint32_t)t_sec);
e1f19995 680 param.tpc_param = 0;
baf8532a
AD		 681
682 msb->data_dir = rq_data_dir(req);
683 msb->transfer_cmd = msb->data_dir == READ
684 ? MSPRO_CMD_READ_DATA
685 : MSPRO_CMD_WRITE_DATA;
686
687 dev_dbg(&card->dev, "data transfer: cmd %x, "
688 "lba %x, count %x\n", msb->transfer_cmd,
689 be32_to_cpu(param.data_address),
690 page_count);
691
692 card->next_request = h_mspro_block_req_init;
693 msb->mrq_handler = h_mspro_block_transfer_data;
694 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
695 &param, sizeof(param));
696 memstick_new_req(card->host);
697 wait_for_completion(&card->mrq_complete);
698 rc = card->current_mrq.error;
699
700 if (rc || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
701 for (cnt = 0; cnt < msb->current_seg; cnt++)
702 page_count += msb->req_sg[cnt].length
703 / msb->page_size;
704
705 if (msb->current_page)
706 page_count += msb->current_page - 1;
707
708 if (page_count && (msb->data_dir == READ))
709 rc = msb->page_size * page_count;
710 else
711 rc = -EIO;
712 } else
713 rc = msb->page_size * page_count;
714 } else
715 rc = -EFAULT;
716
717 spin_lock_irqsave(&msb->q_lock, flags);
718 if (rc >= 0)
719 chunk = __blk_end_request(req, 0, rc);
720 else
721 chunk = __blk_end_request(req, rc, 0);
722
723 dev_dbg(&card->dev, "end chunk %d, %d\n", rc, chunk);
724 spin_unlock_irqrestore(&msb->q_lock, flags);
725 } while (chunk);
726}
727
728static int mspro_block_has_request(struct mspro_block_data *msb)
729{
730 int rc = 0;
731 unsigned long flags;
732
733 spin_lock_irqsave(&msb->q_lock, flags);
734 if (kthread_should_stop() || msb->has_request)
735 rc = 1;
736 spin_unlock_irqrestore(&msb->q_lock, flags);
737 return rc;
738}
739
740static int mspro_block_queue_thread(void *data)
741{
742 struct memstick_dev *card = data;
743 struct memstick_host *host = card->host;
744 struct mspro_block_data *msb = memstick_get_drvdata(card);
745 struct request *req;
746 unsigned long flags;
747
748 while (1) {
749 wait_event(msb->q_wait, mspro_block_has_request(msb));
750 dev_dbg(&card->dev, "thread iter\n");
751
752 spin_lock_irqsave(&msb->q_lock, flags);
753 req = elv_next_request(msb->queue);
754 dev_dbg(&card->dev, "next req %p\n", req);
755 if (!req) {
756 msb->has_request = 0;
757 if (kthread_should_stop()) {
758 spin_unlock_irqrestore(&msb->q_lock, flags);
759 break;
760 }
761 } else
762 msb->has_request = 1;
763 spin_unlock_irqrestore(&msb->q_lock, flags);
764
765 if (req) {
766 mutex_lock(&host->lock);
767 mspro_block_process_request(card, req);
768 mutex_unlock(&host->lock);
769 }
770 }
771 dev_dbg(&card->dev, "thread finished\n");
772 return 0;
773}
774
775static void mspro_block_request(struct request_queue *q)
776{
777 struct memstick_dev *card = q->queuedata;
778 struct mspro_block_data *msb = memstick_get_drvdata(card);
779 struct request *req = NULL;
780
781 if (msb->q_thread) {
782 msb->has_request = 1;
783 wake_up_all(&msb->q_wait);
784 } else {
785 while ((req = elv_next_request(q)) != NULL)
786 end_queued_request(req, -ENODEV);
787 }
788}
789
790/*** Initialization ***/
791
792static int mspro_block_wait_for_ced(struct memstick_dev *card)
793{
794 struct mspro_block_data *msb = memstick_get_drvdata(card);
795
796 card->next_request = h_mspro_block_req_init;
797 msb->mrq_handler = h_mspro_block_wait_for_ced;
798 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
799 memstick_new_req(card->host);
800 wait_for_completion(&card->mrq_complete);
801 return card->current_mrq.error;
802}
803
804static int mspro_block_switch_to_parallel(struct memstick_dev *card)
805{
806 struct memstick_host *host = card->host;
807 struct mspro_block_data *msb = memstick_get_drvdata(card);
808 struct mspro_param_register param = {
809 .system = 0,
810 .data_count = 0,
811 .data_address = 0,
e1f19995 812 .tpc_param = 0
baf8532a
AD		 813 };
814
815 card->next_request = h_mspro_block_req_init;
816 msb->mrq_handler = h_mspro_block_default;
817 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
818 sizeof(param));
819 memstick_new_req(host);
820 wait_for_completion(&card->mrq_complete);
821 if (card->current_mrq.error)
822 return card->current_mrq.error;
823
e1f19995
AD		 824 msb->system = MEMSTICK_SYS_PAR4;
825 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
baf8532a
AD		 826
827 card->next_request = h_mspro_block_req_init;
828 msb->mrq_handler = h_mspro_block_default;
829 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
830 memstick_new_req(card->host);
831 wait_for_completion(&card->mrq_complete);
832
833 if (card->current_mrq.error) {
834 msb->system = 0x80;
835 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
836 return -EFAULT;
837 }
838
839 return 0;
840}
841
842/* Memory allocated for attributes by this function should be freed by
843 * mspro_block_data_clear, no matter if the initialization process succeded
844 * or failed.
845 */
846static int mspro_block_read_attributes(struct memstick_dev *card)
847{
848 struct mspro_block_data *msb = memstick_get_drvdata(card);
849 struct mspro_param_register param = {
850 .system = msb->system,
851 .data_count = cpu_to_be16(1),
852 .data_address = 0,
e1f19995 853 .tpc_param = 0
baf8532a
AD		 854 };
855 struct mspro_attribute *attr = NULL;
856 struct mspro_sys_attr *s_attr = NULL;
857 unsigned char *buffer = NULL;
858 int cnt, rc, attr_count;
859 unsigned int addr;
860 unsigned short page_count;
861
862 attr = kmalloc(msb->page_size, GFP_KERNEL);
863 if (!attr)
864 return -ENOMEM;
865
866 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
867 msb->seg_count = 1;
868 msb->current_seg = 0;
869 msb->current_page = 0;
870 msb->data_dir = READ;
871 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
872
873 card->next_request = h_mspro_block_req_init;
874 msb->mrq_handler = h_mspro_block_transfer_data;
875 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
876 sizeof(param));
877 memstick_new_req(card->host);
878 wait_for_completion(&card->mrq_complete);
879 if (card->current_mrq.error) {
880 rc = card->current_mrq.error;
881 goto out_free_attr;
882 }
883
884 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
885 printk(KERN_ERR "%s: unrecognized device signature %x\n",
886 card->dev.bus_id, be16_to_cpu(attr->signature));
887 rc = -ENODEV;
888 goto out_free_attr;
889 }
890
891 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
892 printk(KERN_WARNING "%s: way too many attribute entries\n",
893 card->dev.bus_id);
894 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
895 } else
896 attr_count = attr->count;
897
898 msb->attr_group.attrs = kzalloc((attr_count + 1)
899 * sizeof(struct attribute),
900 GFP_KERNEL);
901 if (!msb->attr_group.attrs) {
902 rc = -ENOMEM;
903 goto out_free_attr;
904 }
905 msb->attr_group.name = "media_attributes";
906
907 buffer = kmalloc(msb->page_size, GFP_KERNEL);
908 if (!buffer) {
909 rc = -ENOMEM;
910 goto out_free_attr;
911 }
912 memcpy(buffer, (char *)attr, msb->page_size);
913 page_count = 1;
914
915 for (cnt = 0; cnt < attr_count; ++cnt) {
916 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
917 if (!s_attr) {
918 rc = -ENOMEM;
919 goto out_free_buffer;
920 }
921
922 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
923 addr = be32_to_cpu(attr->entries[cnt].address);
924 rc = be32_to_cpu(attr->entries[cnt].size);
925 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
926 "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
927 s_attr->id = attr->entries[cnt].id;
928 if (mspro_block_attr_name(s_attr->id))
929 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
930 mspro_block_attr_name(attr->entries[cnt].id));
931 else
932 snprintf(s_attr->name, sizeof(s_attr->name),
933 "attr_x%02x", attr->entries[cnt].id);
934
935 s_attr->dev_attr.attr.name = s_attr->name;
936 s_attr->dev_attr.attr.mode = S_IRUGO;
937 s_attr->dev_attr.attr.owner = THIS_MODULE;
938 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
939
940 if (!rc)
941 continue;
942
943 s_attr->size = rc;
944 s_attr->data = kmalloc(rc, GFP_KERNEL);
945 if (!s_attr->data) {
946 rc = -ENOMEM;
947 goto out_free_buffer;
948 }
949
950 if (((addr / msb->page_size)
951 == be32_to_cpu(param.data_address))
952 && (((addr + rc - 1) / msb->page_size)
953 == be32_to_cpu(param.data_address))) {
954 memcpy(s_attr->data, buffer + addr % msb->page_size,
955 rc);
956 continue;
957 }
958
959 if (page_count <= (rc / msb->page_size)) {
960 kfree(buffer);
961 page_count = (rc / msb->page_size) + 1;
962 buffer = kmalloc(page_count * msb->page_size,
963 GFP_KERNEL);
964 if (!buffer) {
965 rc = -ENOMEM;
966 goto out_free_attr;
967 }
968 }
969
970 param.system = msb->system;
971 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
972 param.data_address = cpu_to_be32(addr / msb->page_size);
e1f19995 973 param.tpc_param = 0;
baf8532a
AD		 974
975 sg_init_one(&msb->req_sg[0], buffer,
976 be16_to_cpu(param.data_count) * msb->page_size);
977 msb->seg_count = 1;
978 msb->current_seg = 0;
979 msb->current_page = 0;
980 msb->data_dir = READ;
981 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
982
983 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
984 be32_to_cpu(param.data_address),
985 be16_to_cpu(param.data_count));
986
987 card->next_request = h_mspro_block_req_init;
988 msb->mrq_handler = h_mspro_block_transfer_data;
989 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
990 (char *)&param, sizeof(param));
991 memstick_new_req(card->host);
992 wait_for_completion(&card->mrq_complete);
993 if (card->current_mrq.error) {
994 rc = card->current_mrq.error;
995 goto out_free_buffer;
996 }
997
998 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
999 }
1000
1001 rc = 0;
1002out_free_buffer:
1003 kfree(buffer);
1004out_free_attr:
1005 kfree(attr);
1006 return rc;
1007}
1008
1009static int mspro_block_init_card(struct memstick_dev *card)
1010{
1011 struct mspro_block_data *msb = memstick_get_drvdata(card);
1012 struct memstick_host *host = card->host;
1013 int rc = 0;
1014
e1f19995 1015 msb->system = MEMSTICK_SYS_SERIAL;
baf8532a
AD		 1016 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1017 card->reg_addr.r_length = sizeof(struct ms_status_register);
1018 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1019 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1020
1021 if (memstick_set_rw_addr(card))
1022 return -EIO;
1023
e1f19995 1024 if (host->caps & MEMSTICK_CAP_PAR4) {
baf8532a
AD		 1025 if (mspro_block_switch_to_parallel(card))
1026 printk(KERN_WARNING "%s: could not switch to "
1027 "parallel interface\n", card->dev.bus_id);
1028 }
1029
1030 rc = mspro_block_wait_for_ced(card);
1031 if (rc)
1032 return rc;
1033 dev_dbg(&card->dev, "card activated\n");
1034
1035 card->next_request = h_mspro_block_req_init;
1036 msb->mrq_handler = h_mspro_block_get_ro;
1037 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1038 sizeof(struct ms_status_register));
1039 memstick_new_req(card->host);
1040 wait_for_completion(&card->mrq_complete);
1041 if (card->current_mrq.error)
1042 return card->current_mrq.error;
1043
1044 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1045
1046 msb->page_size = 512;
1047 rc = mspro_block_read_attributes(card);
1048 if (rc)
1049 return rc;
1050
1051 dev_dbg(&card->dev, "attributes loaded\n");
1052 return 0;
1053
1054}
1055
1056static int mspro_block_init_disk(struct memstick_dev *card)
1057{
1058 struct mspro_block_data *msb = memstick_get_drvdata(card);
1059 struct memstick_host *host = card->host;
1060 struct mspro_devinfo *dev_info = NULL;
1061 struct mspro_sys_info *sys_info = NULL;
1062 struct mspro_sys_attr *s_attr = NULL;
1063 int rc, disk_id;
1064 u64 limit = BLK_BOUNCE_HIGH;
1065 unsigned long capacity;
1066
1067 if (host->cdev.dev->dma_mask && *(host->cdev.dev->dma_mask))
1068 limit = *(host->cdev.dev->dma_mask);
1069
1070 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1071 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1072
1073 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1074 dev_info = s_attr->data;
1075 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1076 sys_info = s_attr->data;
1077 }
1078
1079 if (!dev_info || !sys_info)
1080 return -ENODEV;
1081
1082 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1083 msb->heads = be16_to_cpu(dev_info->heads);
1084 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1085
1086 msb->page_size = be16_to_cpu(sys_info->unit_size);
1087
1088 if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1089 return -ENOMEM;
1090
1091 mutex_lock(&mspro_block_disk_lock);
1092 rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1093 mutex_unlock(&mspro_block_disk_lock);
1094
1095 if (rc)
1096 return rc;
1097
1098 if ((disk_id << MEMSTICK_PART_SHIFT) > 255) {
1099 rc = -ENOSPC;
1100 goto out_release_id;
1101 }
1102
1103 msb->disk = alloc_disk(1 << MEMSTICK_PART_SHIFT);
1104 if (!msb->disk) {
1105 rc = -ENOMEM;
1106 goto out_release_id;
1107 }
1108
1109 spin_lock_init(&msb->q_lock);
1110 init_waitqueue_head(&msb->q_wait);
1111
1112 msb->queue = blk_init_queue(mspro_block_request, &msb->q_lock);
1113 if (!msb->queue) {
1114 rc = -ENOMEM;
1115 goto out_put_disk;
1116 }
1117
1118 msb->queue->queuedata = card;
1119
1120 blk_queue_bounce_limit(msb->queue, limit);
1121 blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1122 blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1123 blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1124 blk_queue_max_segment_size(msb->queue,
1125 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1126
1127 msb->disk->major = major;
1128 msb->disk->first_minor = disk_id << MEMSTICK_PART_SHIFT;
1129 msb->disk->fops = &ms_block_bdops;
1130 msb->usage_count = 1;
1131 msb->disk->private_data = msb;
1132 msb->disk->queue = msb->queue;
1133 msb->disk->driverfs_dev = &card->dev;
1134
1135 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1136
1137 blk_queue_hardsect_size(msb->queue, msb->page_size);
1138
1139 capacity = be16_to_cpu(sys_info->user_block_count);
1140 capacity *= be16_to_cpu(sys_info->block_size);
1141 capacity *= msb->page_size >> 9;
1142 set_capacity(msb->disk, capacity);
1143 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1144 msb->q_thread = kthread_run(mspro_block_queue_thread, card,
1145 DRIVER_NAME"d");
1146 if (IS_ERR(msb->q_thread))
1147 goto out_put_disk;
1148
1149 mutex_unlock(&host->lock);
1150 add_disk(msb->disk);
1151 mutex_lock(&host->lock);
1152 msb->active = 1;
1153 return 0;
1154
1155out_put_disk:
1156 put_disk(msb->disk);
1157out_release_id:
1158 mutex_lock(&mspro_block_disk_lock);
1159 idr_remove(&mspro_block_disk_idr, disk_id);
1160 mutex_unlock(&mspro_block_disk_lock);
1161 return rc;
1162}
1163
1164static void mspro_block_data_clear(struct mspro_block_data *msb)
1165{
1166 int cnt;
1167 struct mspro_sys_attr *s_attr;
1168
1169 if (msb->attr_group.attrs) {
1170 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1171 s_attr = mspro_from_sysfs_attr(msb->attr_group
1172 .attrs[cnt]);
1173 kfree(s_attr->data);
1174 kfree(s_attr);
1175 }
1176 kfree(msb->attr_group.attrs);
1177 }
1178
1179 msb->card = NULL;
1180}
1181
1182static int mspro_block_check_card(struct memstick_dev *card)
1183{
1184 struct mspro_block_data *msb = memstick_get_drvdata(card);
1185
1186 return (msb->active == 1);
1187}
1188
1189static int mspro_block_probe(struct memstick_dev *card)
1190{
1191 struct mspro_block_data *msb;
1192 int rc = 0;
1193
1194 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1195 if (!msb)
1196 return -ENOMEM;
1197 memstick_set_drvdata(card, msb);
1198 msb->card = card;
1199
1200 rc = mspro_block_init_card(card);
1201
1202 if (rc)
1203 goto out_free;
1204
1205 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1206 if (rc)
1207 goto out_free;
1208
1209 rc = mspro_block_init_disk(card);
1210 if (!rc) {
1211 card->check = mspro_block_check_card;
1212 return 0;
1213 }
1214
1215 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1216out_free:
1217 memstick_set_drvdata(card, NULL);
1218 mspro_block_data_clear(msb);
1219 kfree(msb);
1220 return rc;
1221}
1222
1223static void mspro_block_remove(struct memstick_dev *card)
1224{
1225 struct mspro_block_data *msb = memstick_get_drvdata(card);
1226 struct task_struct *q_thread = NULL;
1227 unsigned long flags;
1228
1229 del_gendisk(msb->disk);
1230 dev_dbg(&card->dev, "mspro block remove\n");
1231 spin_lock_irqsave(&msb->q_lock, flags);
1232 q_thread = msb->q_thread;
1233 msb->q_thread = NULL;
1234 msb->active = 0;
1235 spin_unlock_irqrestore(&msb->q_lock, flags);
1236
1237 if (q_thread) {
1238 mutex_unlock(&card->host->lock);
1239 kthread_stop(q_thread);
1240 mutex_lock(&card->host->lock);
1241 }
1242
1243 dev_dbg(&card->dev, "queue thread stopped\n");
1244
1245 blk_cleanup_queue(msb->queue);
1246
1247 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1248
1249 mutex_lock(&mspro_block_disk_lock);
1250 mspro_block_data_clear(msb);
1251 mutex_unlock(&mspro_block_disk_lock);
1252
1253 mspro_block_disk_release(msb->disk);
1254 memstick_set_drvdata(card, NULL);
1255}
1256
1257#ifdef CONFIG_PM
1258
1259static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1260{
1261 struct mspro_block_data *msb = memstick_get_drvdata(card);
1262 struct task_struct *q_thread = NULL;
1263 unsigned long flags;
1264
1265 spin_lock_irqsave(&msb->q_lock, flags);
1266 q_thread = msb->q_thread;
1267 msb->q_thread = NULL;
1268 msb->active = 0;
1269 blk_stop_queue(msb->queue);
1270 spin_unlock_irqrestore(&msb->q_lock, flags);
1271
1272 if (q_thread)
1273 kthread_stop(q_thread);
1274
1275 return 0;
1276}
1277
1278static int mspro_block_resume(struct memstick_dev *card)
1279{
1280 struct mspro_block_data *msb = memstick_get_drvdata(card);
1281 unsigned long flags;
1282 int rc = 0;
1283
1284#ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1285
1286 struct mspro_block_data *new_msb;
1287 struct memstick_host *host = card->host;
1288 struct mspro_sys_attr *s_attr, *r_attr;
1289 unsigned char cnt;
1290
1291 mutex_lock(&host->lock);
1292 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1293 if (!new_msb) {
1294 rc = -ENOMEM;
1295 goto out_unlock;
1296 }
1297
1298 new_msb->card = card;
1299 memstick_set_drvdata(card, new_msb);
1300 if (mspro_block_init_card(card))
1301 goto out_free;
1302
1303 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1304 && msb->attr_group.attrs[cnt]; ++cnt) {
1305 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1306 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1307
1308 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1309 && r_attr->id == s_attr->id) {
1310 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1311 break;
1312
1313 memstick_set_drvdata(card, msb);
1314 msb->q_thread = kthread_run(mspro_block_queue_thread,
1315 card, DRIVER_NAME"d");
1316 if (IS_ERR(msb->q_thread))
1317 msb->q_thread = NULL;
1318 else
1319 msb->active = 1;
1320
1321 break;
1322 }
1323 }
1324
1325out_free:
1326 memstick_set_drvdata(card, msb);
1327 mspro_block_data_clear(new_msb);
1328 kfree(new_msb);
1329out_unlock:
1330 mutex_unlock(&host->lock);
1331
1332#endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1333
1334 spin_lock_irqsave(&msb->q_lock, flags);
1335 blk_start_queue(msb->queue);
1336 spin_unlock_irqrestore(&msb->q_lock, flags);
1337 return rc;
1338}
1339
1340#else
1341
1342#define mspro_block_suspend NULL
1343#define mspro_block_resume NULL
1344
1345#endif /* CONFIG_PM */
1346
1347static struct memstick_device_id mspro_block_id_tbl[] = {
1348 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1349 MEMSTICK_CLASS_GENERIC_DUO},
1350 {}
1351};
1352
1353
1354static struct memstick_driver mspro_block_driver = {
1355 .driver = {
1356 .name = DRIVER_NAME,
1357 .owner = THIS_MODULE
1358 },
1359 .id_table = mspro_block_id_tbl,
1360 .probe = mspro_block_probe,
1361 .remove = mspro_block_remove,
1362 .suspend = mspro_block_suspend,
1363 .resume = mspro_block_resume
1364};
1365
1366static int __init mspro_block_init(void)
1367{
1368 int rc = -ENOMEM;
1369
1370 rc = register_blkdev(major, DRIVER_NAME);
1371 if (rc < 0) {
1372 printk(KERN_ERR DRIVER_NAME ": failed to register "
1373 "major %d, error %d\n", major, rc);
1374 return rc;
1375 }
1376 if (!major)
1377 major = rc;
1378
1379 rc = memstick_register_driver(&mspro_block_driver);
1380 if (rc)
1381 unregister_blkdev(major, DRIVER_NAME);
1382 return rc;
1383}
1384
1385static void __exit mspro_block_exit(void)
1386{
1387 memstick_unregister_driver(&mspro_block_driver);
1388 unregister_blkdev(major, DRIVER_NAME);
1389 idr_destroy(&mspro_block_disk_idr);
1390}
1391
1392module_init(mspro_block_init);
1393module_exit(mspro_block_exit);
1394
1395MODULE_LICENSE("GPL");
1396MODULE_AUTHOR("Alex Dubov");
1397MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1398MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
kernel source for telekom puls (alcatel/mediatek)