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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Sony MemoryStick Pro storage support
4 *
5 * Copyright (C) 2007 Alex Dubov <[email protected]>
6 *
7 * Special thanks to Carlos Corbacho for providing various MemoryStick cards
8 * that made this driver possible.
9 */
10
11#include <linux/blk-mq.h>
12#include <linux/idr.h>
13#include <linux/hdreg.h>
14#include <linux/kthread.h>
15#include <linux/delay.h>
16#include <linux/slab.h>
17#include <linux/mutex.h>
18#include <linux/memstick.h>
19#include <linux/module.h>
20
21#define DRIVER_NAME "mspro_block"
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
32#define MSPRO_BLOCK_PART_SHIFT 3
33
34enum {
35 MSPRO_BLOCK_ID_SYSINFO = 0x10,
36 MSPRO_BLOCK_ID_MODELNAME = 0x15,
37 MSPRO_BLOCK_ID_MBR = 0x20,
38 MSPRO_BLOCK_ID_PBR16 = 0x21,
39 MSPRO_BLOCK_ID_PBR32 = 0x22,
40 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
41 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
42 MSPRO_BLOCK_ID_DEVINFO = 0x30
43};
44
45struct mspro_sys_attr {
46 size_t size;
47 void *data;
48 unsigned char id;
49 char name[32];
50 struct device_attribute dev_attr;
51};
52
53struct mspro_attr_entry {
54 __be32 address;
55 __be32 size;
56 unsigned char id;
57 unsigned char reserved[3];
58} __attribute__((packed));
59
60struct mspro_attribute {
61 __be16 signature;
62 unsigned short version;
63 unsigned char count;
64 unsigned char reserved[11];
65 struct mspro_attr_entry entries[];
66} __attribute__((packed));
67
68struct mspro_sys_info {
69 unsigned char class;
70 unsigned char reserved0;
71 __be16 block_size;
72 __be16 block_count;
73 __be16 user_block_count;
74 __be16 page_size;
75 unsigned char reserved1[2];
76 unsigned char assembly_date[8];
77 __be32 serial_number;
78 unsigned char assembly_maker_code;
79 unsigned char assembly_model_code[3];
80 __be16 memory_maker_code;
81 __be16 memory_model_code;
82 unsigned char reserved2[4];
83 unsigned char vcc;
84 unsigned char vpp;
85 __be16 controller_number;
86 __be16 controller_function;
87 __be16 start_sector;
88 __be16 unit_size;
89 unsigned char ms_sub_class;
90 unsigned char reserved3[4];
91 unsigned char interface_type;
92 __be16 controller_code;
93 unsigned char format_type;
94 unsigned char reserved4;
95 unsigned char device_type;
96 unsigned char reserved5[7];
97 unsigned char mspro_id[16];
98 unsigned char reserved6[16];
99} __attribute__((packed));
100
101struct mspro_mbr {
102 unsigned char boot_partition;
103 unsigned char start_head;
104 unsigned char start_sector;
105 unsigned char start_cylinder;
106 unsigned char partition_type;
107 unsigned char end_head;
108 unsigned char end_sector;
109 unsigned char end_cylinder;
110 unsigned int start_sectors;
111 unsigned int sectors_per_partition;
112} __attribute__((packed));
113
114struct mspro_specfile {
115 char name[8];
116 char ext[3];
117 unsigned char attr;
118 unsigned char reserved[10];
119 unsigned short time;
120 unsigned short date;
121 unsigned short cluster;
122 unsigned int size;
123} __attribute__((packed));
124
125struct mspro_devinfo {
126 __be16 cylinders;
127 __be16 heads;
128 __be16 bytes_per_track;
129 __be16 bytes_per_sector;
130 __be16 sectors_per_track;
131 unsigned char reserved[6];
132} __attribute__((packed));
133
134struct mspro_block_data {
135 struct memstick_dev *card;
136 unsigned int caps;
137 struct gendisk *disk;
138 struct request_queue *queue;
139 struct request *block_req;
140 struct blk_mq_tag_set tag_set;
141 spinlock_t q_lock;
142
143 unsigned short page_size;
144 unsigned short cylinders;
145 unsigned short heads;
146 unsigned short sectors_per_track;
147
148 unsigned char system;
149 unsigned char read_only:1,
150 eject:1,
151 data_dir:1,
152 active:1;
153 unsigned char transfer_cmd;
154
155 int (*mrq_handler)(struct memstick_dev *card,
156 struct memstick_request **mrq);
157
158
159 /* Default request setup function for data access method preferred by
160 * this host instance.
161 */
162 void (*setup_transfer)(struct memstick_dev *card,
163 u64 offset, size_t length);
164
165 struct attribute_group attr_group;
166
167 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
168 unsigned int seg_count;
169 unsigned int current_seg;
170 unsigned int current_page;
171};
172
173static DEFINE_IDR(mspro_block_disk_idr);
174static DEFINE_MUTEX(mspro_block_disk_lock);
175
176static int mspro_block_complete_req(struct memstick_dev *card, int error);
177
178/*** Block device ***/
179
180static void mspro_block_bd_free_disk(struct gendisk *disk)
181{
182 struct mspro_block_data *msb = disk->private_data;
183 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
184
185 mutex_lock(&mspro_block_disk_lock);
186 idr_remove(&mspro_block_disk_idr, disk_id);
187 mutex_unlock(&mspro_block_disk_lock);
188
189 kfree(msb);
190}
191
192static int mspro_block_bd_getgeo(struct gendisk *disk,
193 struct hd_geometry *geo)
194{
195 struct mspro_block_data *msb = disk->private_data;
196
197 geo->heads = msb->heads;
198 geo->sectors = msb->sectors_per_track;
199 geo->cylinders = msb->cylinders;
200
201 return 0;
202}
203
204static const struct block_device_operations ms_block_bdops = {
205 .owner = THIS_MODULE,
206 .getgeo = mspro_block_bd_getgeo,
207 .free_disk = mspro_block_bd_free_disk,
208};
209
210/*** Information ***/
211
212static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
213{
214 struct device_attribute *dev_attr
215 = container_of(attr, struct device_attribute, attr);
216 return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
217}
218
219static const char *mspro_block_attr_name(unsigned char tag)
220{
221 switch (tag) {
222 case MSPRO_BLOCK_ID_SYSINFO:
223 return "attr_sysinfo";
224 case MSPRO_BLOCK_ID_MODELNAME:
225 return "attr_modelname";
226 case MSPRO_BLOCK_ID_MBR:
227 return "attr_mbr";
228 case MSPRO_BLOCK_ID_PBR16:
229 return "attr_pbr16";
230 case MSPRO_BLOCK_ID_PBR32:
231 return "attr_pbr32";
232 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
233 return "attr_specfilevalues1";
234 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
235 return "attr_specfilevalues2";
236 case MSPRO_BLOCK_ID_DEVINFO:
237 return "attr_devinfo";
238 default:
239 return NULL;
240 }
241}
242
243typedef ssize_t (*sysfs_show_t)(struct device *dev,
244 struct device_attribute *attr,
245 char *buffer);
246
247static ssize_t mspro_block_attr_show_default(struct device *dev,
248 struct device_attribute *attr,
249 char *buffer)
250{
251 struct mspro_sys_attr *s_attr = container_of(attr,
252 struct mspro_sys_attr,
253 dev_attr);
254
255 ssize_t cnt, rc = 0;
256
257 for (cnt = 0; cnt < s_attr->size; cnt++) {
258 if (cnt && !(cnt % 16)) {
259 if (PAGE_SIZE - rc)
260 buffer[rc++] = '\n';
261 }
262
263 rc += sysfs_emit_at(buffer, rc, "%02x ",
264 ((unsigned char *)s_attr->data)[cnt]);
265 }
266 return rc;
267}
268
269static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
270 struct device_attribute *attr,
271 char *buffer)
272{
273 struct mspro_sys_attr *x_attr = container_of(attr,
274 struct mspro_sys_attr,
275 dev_attr);
276 struct mspro_sys_info *x_sys = x_attr->data;
277 ssize_t rc = 0;
278 int date_tz = 0, date_tz_f = 0;
279
280 if (x_sys->assembly_date[0] > 0x80U) {
281 date_tz = (~x_sys->assembly_date[0]) + 1;
282 date_tz_f = date_tz & 3;
283 date_tz >>= 2;
284 date_tz = -date_tz;
285 date_tz_f *= 15;
286 } else if (x_sys->assembly_date[0] < 0x80U) {
287 date_tz = x_sys->assembly_date[0];
288 date_tz_f = date_tz & 3;
289 date_tz >>= 2;
290 date_tz_f *= 15;
291 }
292
293 rc += sysfs_emit_at(buffer, rc, "class: %x\n", x_sys->class);
294 rc += sysfs_emit_at(buffer, rc, "block size: %x\n", be16_to_cpu(x_sys->block_size));
295 rc += sysfs_emit_at(buffer, rc, "block count: %x\n", be16_to_cpu(x_sys->block_count));
296 rc += sysfs_emit_at(buffer, rc, "user block count: %x\n",
297 be16_to_cpu(x_sys->user_block_count));
298 rc += sysfs_emit_at(buffer, rc, "page size: %x\n", be16_to_cpu(x_sys->page_size));
299 rc += sysfs_emit_at(buffer, rc, "assembly date: GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
300 date_tz, date_tz_f,
301 be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
302 x_sys->assembly_date[3], x_sys->assembly_date[4],
303 x_sys->assembly_date[5], x_sys->assembly_date[6],
304 x_sys->assembly_date[7]);
305 rc += sysfs_emit_at(buffer, rc, "serial number: %x\n", be32_to_cpu(x_sys->serial_number));
306 rc += sysfs_emit_at(buffer, rc, "assembly maker code: %x\n", x_sys->assembly_maker_code);
307 rc += sysfs_emit_at(buffer, rc, "assembly model code: %02x%02x%02x\n",
308 x_sys->assembly_model_code[0],
309 x_sys->assembly_model_code[1],
310 x_sys->assembly_model_code[2]);
311 rc += sysfs_emit_at(buffer, rc, "memory maker code: %x\n",
312 be16_to_cpu(x_sys->memory_maker_code));
313 rc += sysfs_emit_at(buffer, rc, "memory model code: %x\n",
314 be16_to_cpu(x_sys->memory_model_code));
315 rc += sysfs_emit_at(buffer, rc, "vcc: %x\n", x_sys->vcc);
316 rc += sysfs_emit_at(buffer, rc, "vpp: %x\n", x_sys->vpp);
317 rc += sysfs_emit_at(buffer, rc, "controller number: %x\n",
318 be16_to_cpu(x_sys->controller_number));
319 rc += sysfs_emit_at(buffer, rc, "controller function: %x\n",
320 be16_to_cpu(x_sys->controller_function));
321 rc += sysfs_emit_at(buffer, rc, "start sector: %x\n", be16_to_cpu(x_sys->start_sector));
322 rc += sysfs_emit_at(buffer, rc, "unit size: %x\n", be16_to_cpu(x_sys->unit_size));
323 rc += sysfs_emit_at(buffer, rc, "sub class: %x\n", x_sys->ms_sub_class);
324 rc += sysfs_emit_at(buffer, rc, "interface type: %x\n", x_sys->interface_type);
325 rc += sysfs_emit_at(buffer, rc, "controller code: %x\n",
326 be16_to_cpu(x_sys->controller_code));
327 rc += sysfs_emit_at(buffer, rc, "format type: %x\n", x_sys->format_type);
328 rc += sysfs_emit_at(buffer, rc, "device type: %x\n", x_sys->device_type);
329 rc += sysfs_emit_at(buffer, rc, "mspro id: %s\n", x_sys->mspro_id);
330 return rc;
331}
332
333static ssize_t mspro_block_attr_show_modelname(struct device *dev,
334 struct device_attribute *attr,
335 char *buffer)
336{
337 struct mspro_sys_attr *s_attr = container_of(attr,
338 struct mspro_sys_attr,
339 dev_attr);
340
341 return sysfs_emit(buffer, "%s", (char *)s_attr->data);
342}
343
344static ssize_t mspro_block_attr_show_mbr(struct device *dev,
345 struct device_attribute *attr,
346 char *buffer)
347{
348 struct mspro_sys_attr *x_attr = container_of(attr,
349 struct mspro_sys_attr,
350 dev_attr);
351 struct mspro_mbr *x_mbr = x_attr->data;
352 ssize_t rc = 0;
353
354 rc += sysfs_emit_at(buffer, rc, "boot partition: %x\n", x_mbr->boot_partition);
355 rc += sysfs_emit_at(buffer, rc, "start head: %x\n", x_mbr->start_head);
356 rc += sysfs_emit_at(buffer, rc, "start sector: %x\n", x_mbr->start_sector);
357 rc += sysfs_emit_at(buffer, rc, "start cylinder: %x\n", x_mbr->start_cylinder);
358 rc += sysfs_emit_at(buffer, rc, "partition type: %x\n", x_mbr->partition_type);
359 rc += sysfs_emit_at(buffer, rc, "end head: %x\n", x_mbr->end_head);
360 rc += sysfs_emit_at(buffer, rc, "end sector: %x\n", x_mbr->end_sector);
361 rc += sysfs_emit_at(buffer, rc, "end cylinder: %x\n", x_mbr->end_cylinder);
362 rc += sysfs_emit_at(buffer, rc, "start sectors: %x\n", x_mbr->start_sectors);
363 rc += sysfs_emit_at(buffer, rc, "sectors per partition: %x\n",
364 x_mbr->sectors_per_partition);
365 return rc;
366}
367
368static ssize_t mspro_block_attr_show_specfile(struct device *dev,
369 struct device_attribute *attr,
370 char *buffer)
371{
372 struct mspro_sys_attr *x_attr = container_of(attr,
373 struct mspro_sys_attr,
374 dev_attr);
375 struct mspro_specfile *x_spfile = x_attr->data;
376 char name[9], ext[4];
377 ssize_t rc = 0;
378
379 memcpy(name, x_spfile->name, 8);
380 name[8] = 0;
381 memcpy(ext, x_spfile->ext, 3);
382 ext[3] = 0;
383
384 rc += sysfs_emit_at(buffer, rc, "name: %s\n", name);
385 rc += sysfs_emit_at(buffer, rc, "ext: %s\n", ext);
386 rc += sysfs_emit_at(buffer, rc, "attribute: %x\n", x_spfile->attr);
387 rc += sysfs_emit_at(buffer, rc, "time: %d:%d:%d\n",
388 x_spfile->time >> 11,
389 (x_spfile->time >> 5) & 0x3f,
390 (x_spfile->time & 0x1f) * 2);
391 rc += sysfs_emit_at(buffer, rc, "date: %d-%d-%d\n",
392 (x_spfile->date >> 9) + 1980,
393 (x_spfile->date >> 5) & 0xf,
394 x_spfile->date & 0x1f);
395 rc += sysfs_emit_at(buffer, rc, "start cluster: %x\n", x_spfile->cluster);
396 rc += sysfs_emit_at(buffer, rc, "size: %x\n", x_spfile->size);
397 return rc;
398}
399
400static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
401 struct device_attribute *attr,
402 char *buffer)
403{
404 struct mspro_sys_attr *x_attr = container_of(attr,
405 struct mspro_sys_attr,
406 dev_attr);
407 struct mspro_devinfo *x_devinfo = x_attr->data;
408 ssize_t rc = 0;
409
410 rc += sysfs_emit_at(buffer, rc, "cylinders: %x\n", be16_to_cpu(x_devinfo->cylinders));
411 rc += sysfs_emit_at(buffer, rc, "heads: %x\n", be16_to_cpu(x_devinfo->heads));
412 rc += sysfs_emit_at(buffer, rc, "bytes per track: %x\n",
413 be16_to_cpu(x_devinfo->bytes_per_track));
414 rc += sysfs_emit_at(buffer, rc, "bytes per sector: %x\n",
415 be16_to_cpu(x_devinfo->bytes_per_sector));
416 rc += sysfs_emit_at(buffer, rc, "sectors per track: %x\n",
417 be16_to_cpu(x_devinfo->sectors_per_track));
418 return rc;
419}
420
421static sysfs_show_t mspro_block_attr_show(unsigned char tag)
422{
423 switch (tag) {
424 case MSPRO_BLOCK_ID_SYSINFO:
425 return mspro_block_attr_show_sysinfo;
426 case MSPRO_BLOCK_ID_MODELNAME:
427 return mspro_block_attr_show_modelname;
428 case MSPRO_BLOCK_ID_MBR:
429 return mspro_block_attr_show_mbr;
430 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
431 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
432 return mspro_block_attr_show_specfile;
433 case MSPRO_BLOCK_ID_DEVINFO:
434 return mspro_block_attr_show_devinfo;
435 default:
436 return mspro_block_attr_show_default;
437 }
438}
439
440/*** Protocol handlers ***/
441
442/*
443 * Functions prefixed with "h_" are protocol callbacks. They can be called from
444 * interrupt context. Return value of 0 means that request processing is still
445 * ongoing, while special error value of -EAGAIN means that current request is
446 * finished (and request processor should come back some time later).
447 */
448
449static int h_mspro_block_req_init(struct memstick_dev *card,
450 struct memstick_request **mrq)
451{
452 struct mspro_block_data *msb = memstick_get_drvdata(card);
453
454 *mrq = &card->current_mrq;
455 card->next_request = msb->mrq_handler;
456 return 0;
457}
458
459static int h_mspro_block_default(struct memstick_dev *card,
460 struct memstick_request **mrq)
461{
462 return mspro_block_complete_req(card, (*mrq)->error);
463}
464
465static int h_mspro_block_default_bad(struct memstick_dev *card,
466 struct memstick_request **mrq)
467{
468 return -ENXIO;
469}
470
471static int h_mspro_block_get_ro(struct memstick_dev *card,
472 struct memstick_request **mrq)
473{
474 struct mspro_block_data *msb = memstick_get_drvdata(card);
475
476 if (!(*mrq)->error) {
477 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
478 & MEMSTICK_STATUS0_WP)
479 msb->read_only = 1;
480 else
481 msb->read_only = 0;
482 }
483
484 return mspro_block_complete_req(card, (*mrq)->error);
485}
486
487static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
488 struct memstick_request **mrq)
489{
490 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
491
492 if (!(*mrq)->error) {
493 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
494 (*mrq)->error = -EFAULT;
495 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
496 return 0;
497 }
498
499 return mspro_block_complete_req(card, (*mrq)->error);
500}
501
502static int h_mspro_block_transfer_data(struct memstick_dev *card,
503 struct memstick_request **mrq)
504{
505 struct mspro_block_data *msb = memstick_get_drvdata(card);
506 unsigned char t_val = 0;
507 struct scatterlist t_sg = { 0 };
508 size_t t_offset;
509
510 if ((*mrq)->error)
511 return mspro_block_complete_req(card, (*mrq)->error);
512
513 switch ((*mrq)->tpc) {
514 case MS_TPC_WRITE_REG:
515 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
516 (*mrq)->need_card_int = 1;
517 return 0;
518 case MS_TPC_SET_CMD:
519 t_val = (*mrq)->int_reg;
520 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
521 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
522 goto has_int_reg;
523 return 0;
524 case MS_TPC_GET_INT:
525 t_val = (*mrq)->data[0];
526has_int_reg:
527 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
528 t_val = MSPRO_CMD_STOP;
529 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
530 card->next_request = h_mspro_block_default;
531 return 0;
532 }
533
534 if (msb->current_page
535 == (msb->req_sg[msb->current_seg].length
536 / msb->page_size)) {
537 msb->current_page = 0;
538 msb->current_seg++;
539
540 if (msb->current_seg == msb->seg_count) {
541 if (t_val & MEMSTICK_INT_CED) {
542 return mspro_block_complete_req(card,
543 0);
544 } else {
545 card->next_request
546 = h_mspro_block_wait_for_ced;
547 memstick_init_req(*mrq, MS_TPC_GET_INT,
548 NULL, 1);
549 return 0;
550 }
551 }
552 }
553
554 if (!(t_val & MEMSTICK_INT_BREQ)) {
555 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
556 return 0;
557 }
558
559 t_offset = msb->req_sg[msb->current_seg].offset;
560 t_offset += msb->current_page * msb->page_size;
561
562 sg_set_page(&t_sg,
563 sg_page(&(msb->req_sg[msb->current_seg])) + (t_offset >> PAGE_SHIFT),
564 msb->page_size, offset_in_page(t_offset));
565
566 memstick_init_req_sg(*mrq, msb->data_dir == READ
567 ? MS_TPC_READ_LONG_DATA
568 : MS_TPC_WRITE_LONG_DATA,
569 &t_sg);
570 (*mrq)->need_card_int = 1;
571 return 0;
572 case MS_TPC_READ_LONG_DATA:
573 case MS_TPC_WRITE_LONG_DATA:
574 msb->current_page++;
575 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
576 t_val = (*mrq)->int_reg;
577 goto has_int_reg;
578 } else {
579 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
580 return 0;
581 }
582
583 default:
584 BUG();
585 }
586}
587
588/*** Transfer setup functions for different access methods. ***/
589
590/** Setup data transfer request for SET_CMD TPC with arguments in card
591 * registers.
592 *
593 * @card Current media instance
594 * @offset Target data offset in bytes
595 * @length Required transfer length in bytes.
596 */
597static void h_mspro_block_setup_cmd(struct memstick_dev *card, u64 offset,
598 size_t length)
599{
600 struct mspro_block_data *msb = memstick_get_drvdata(card);
601 struct mspro_param_register param = {
602 .system = msb->system,
603 .data_count = cpu_to_be16((uint16_t)(length / msb->page_size)),
604 /* ISO C90 warning precludes direct initialization for now. */
605 .data_address = 0,
606 .tpc_param = 0
607 };
608
609 do_div(offset, msb->page_size);
610 param.data_address = cpu_to_be32((uint32_t)offset);
611
612 card->next_request = h_mspro_block_req_init;
613 msb->mrq_handler = h_mspro_block_transfer_data;
614 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
615 &param, sizeof(param));
616}
617
618/*** Data transfer ***/
619
620static int mspro_block_issue_req(struct memstick_dev *card)
621{
622 struct mspro_block_data *msb = memstick_get_drvdata(card);
623 u64 t_off;
624 unsigned int count;
625
626 while (true) {
627 msb->current_page = 0;
628 msb->current_seg = 0;
629 msb->seg_count = blk_rq_map_sg(msb->block_req, msb->req_sg);
630
631 if (!msb->seg_count) {
632 unsigned int bytes = blk_rq_cur_bytes(msb->block_req);
633 bool chunk;
634
635 chunk = blk_update_request(msb->block_req,
636 BLK_STS_RESOURCE,
637 bytes);
638 if (chunk)
639 continue;
640 __blk_mq_end_request(msb->block_req,
641 BLK_STS_RESOURCE);
642 msb->block_req = NULL;
643 return -EAGAIN;
644 }
645
646 t_off = blk_rq_pos(msb->block_req);
647 t_off <<= 9;
648 count = blk_rq_bytes(msb->block_req);
649
650 msb->setup_transfer(card, t_off, count);
651
652 msb->data_dir = rq_data_dir(msb->block_req);
653 msb->transfer_cmd = msb->data_dir == READ
654 ? MSPRO_CMD_READ_DATA
655 : MSPRO_CMD_WRITE_DATA;
656
657 memstick_new_req(card->host);
658 return 0;
659 }
660}
661
662static int mspro_block_complete_req(struct memstick_dev *card, int error)
663{
664 struct mspro_block_data *msb = memstick_get_drvdata(card);
665 int cnt;
666 bool chunk;
667 unsigned int t_len = 0;
668 unsigned long flags;
669
670 spin_lock_irqsave(&msb->q_lock, flags);
671 dev_dbg(&card->dev, "complete %d, %d\n", msb->block_req ? 1 : 0,
672 error);
673
674 if (msb->block_req) {
675 /* Nothing to do - not really an error */
676 if (error == -EAGAIN)
677 error = 0;
678
679 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
680 if (msb->data_dir == READ) {
681 for (cnt = 0; cnt < msb->current_seg; cnt++) {
682 t_len += msb->req_sg[cnt].length
683 / msb->page_size;
684
685 if (msb->current_page)
686 t_len += msb->current_page - 1;
687
688 t_len *= msb->page_size;
689 }
690 }
691 } else
692 t_len = blk_rq_bytes(msb->block_req);
693
694 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
695
696 if (error && !t_len)
697 t_len = blk_rq_cur_bytes(msb->block_req);
698
699 chunk = blk_update_request(msb->block_req,
700 errno_to_blk_status(error), t_len);
701 if (chunk) {
702 error = mspro_block_issue_req(card);
703 if (!error)
704 goto out;
705 } else {
706 __blk_mq_end_request(msb->block_req,
707 errno_to_blk_status(error));
708 msb->block_req = NULL;
709 }
710 } else {
711 if (!error)
712 error = -EAGAIN;
713 }
714
715 card->next_request = h_mspro_block_default_bad;
716 complete_all(&card->mrq_complete);
717out:
718 spin_unlock_irqrestore(&msb->q_lock, flags);
719 return error;
720}
721
722static void mspro_block_stop(struct memstick_dev *card)
723{
724 struct mspro_block_data *msb = memstick_get_drvdata(card);
725 int rc = 0;
726 unsigned long flags;
727
728 while (1) {
729 spin_lock_irqsave(&msb->q_lock, flags);
730 if (!msb->block_req) {
731 blk_mq_stop_hw_queues(msb->queue);
732 rc = 1;
733 }
734 spin_unlock_irqrestore(&msb->q_lock, flags);
735
736 if (rc)
737 break;
738
739 wait_for_completion(&card->mrq_complete);
740 }
741}
742
743static void mspro_block_start(struct memstick_dev *card)
744{
745 struct mspro_block_data *msb = memstick_get_drvdata(card);
746
747 blk_mq_start_hw_queues(msb->queue);
748}
749
750static blk_status_t mspro_queue_rq(struct blk_mq_hw_ctx *hctx,
751 const struct blk_mq_queue_data *bd)
752{
753 struct memstick_dev *card = hctx->queue->queuedata;
754 struct mspro_block_data *msb = memstick_get_drvdata(card);
755
756 spin_lock_irq(&msb->q_lock);
757
758 if (msb->block_req) {
759 spin_unlock_irq(&msb->q_lock);
760 return BLK_STS_DEV_RESOURCE;
761 }
762
763 if (msb->eject) {
764 spin_unlock_irq(&msb->q_lock);
765 blk_mq_start_request(bd->rq);
766 return BLK_STS_IOERR;
767 }
768
769 msb->block_req = bd->rq;
770 blk_mq_start_request(bd->rq);
771
772 if (mspro_block_issue_req(card))
773 msb->block_req = NULL;
774
775 spin_unlock_irq(&msb->q_lock);
776 return BLK_STS_OK;
777}
778
779/*** Initialization ***/
780
781static int mspro_block_wait_for_ced(struct memstick_dev *card)
782{
783 struct mspro_block_data *msb = memstick_get_drvdata(card);
784
785 card->next_request = h_mspro_block_req_init;
786 msb->mrq_handler = h_mspro_block_wait_for_ced;
787 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
788 memstick_new_req(card->host);
789 wait_for_completion(&card->mrq_complete);
790 return card->current_mrq.error;
791}
792
793static int mspro_block_set_interface(struct memstick_dev *card,
794 unsigned char sys_reg)
795{
796 struct memstick_host *host = card->host;
797 struct mspro_block_data *msb = memstick_get_drvdata(card);
798 struct mspro_param_register param = {
799 .system = sys_reg,
800 .data_count = 0,
801 .data_address = 0,
802 .tpc_param = 0
803 };
804
805 card->next_request = h_mspro_block_req_init;
806 msb->mrq_handler = h_mspro_block_default;
807 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
808 sizeof(param));
809 memstick_new_req(host);
810 wait_for_completion(&card->mrq_complete);
811 return card->current_mrq.error;
812}
813
814static int mspro_block_switch_interface(struct memstick_dev *card)
815{
816 struct memstick_host *host = card->host;
817 struct mspro_block_data *msb = memstick_get_drvdata(card);
818 int rc = 0;
819
820try_again:
821 if (msb->caps & MEMSTICK_CAP_PAR4)
822 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
823 else
824 return 0;
825
826 if (rc) {
827 printk(KERN_WARNING
828 "%s: could not switch to 4-bit mode, error %d\n",
829 dev_name(&card->dev), rc);
830 return 0;
831 }
832
833 msb->system = MEMSTICK_SYS_PAR4;
834 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
835 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
836 dev_name(&card->dev));
837
838 if (msb->caps & MEMSTICK_CAP_PAR8) {
839 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
840
841 if (!rc) {
842 msb->system = MEMSTICK_SYS_PAR8;
843 host->set_param(host, MEMSTICK_INTERFACE,
844 MEMSTICK_PAR8);
845 printk(KERN_INFO
846 "%s: switching to 8-bit parallel mode\n",
847 dev_name(&card->dev));
848 } else
849 printk(KERN_WARNING
850 "%s: could not switch to 8-bit mode, error %d\n",
851 dev_name(&card->dev), rc);
852 }
853
854 card->next_request = h_mspro_block_req_init;
855 msb->mrq_handler = h_mspro_block_default;
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 rc = card->current_mrq.error;
860
861 if (rc) {
862 printk(KERN_WARNING
863 "%s: interface error, trying to fall back to serial\n",
864 dev_name(&card->dev));
865 msb->system = MEMSTICK_SYS_SERIAL;
866 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
867 msleep(10);
868 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
869 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
870
871 rc = memstick_set_rw_addr(card);
872 if (!rc)
873 rc = mspro_block_set_interface(card, msb->system);
874
875 if (!rc) {
876 msleep(150);
877 rc = mspro_block_wait_for_ced(card);
878 if (rc)
879 return rc;
880
881 if (msb->caps & MEMSTICK_CAP_PAR8) {
882 msb->caps &= ~MEMSTICK_CAP_PAR8;
883 goto try_again;
884 }
885 }
886 }
887 return rc;
888}
889
890/* Memory allocated for attributes by this function should be freed by
891 * mspro_block_data_clear, no matter if the initialization process succeeded
892 * or failed.
893 */
894static int mspro_block_read_attributes(struct memstick_dev *card)
895{
896 struct mspro_block_data *msb = memstick_get_drvdata(card);
897 struct mspro_attribute *attr = NULL;
898 struct mspro_sys_attr *s_attr = NULL;
899 unsigned char *buffer = NULL;
900 int cnt, rc, attr_count;
901 /* While normally physical device offsets, represented here by
902 * attr_offset and attr_len will be of large numeric types, we can be
903 * sure, that attributes are close enough to the beginning of the
904 * device, to save ourselves some trouble.
905 */
906 unsigned int addr, attr_offset = 0, attr_len = msb->page_size;
907
908 attr = kmalloc(msb->page_size, GFP_KERNEL);
909 if (!attr)
910 return -ENOMEM;
911
912 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
913 msb->seg_count = 1;
914 msb->current_seg = 0;
915 msb->current_page = 0;
916 msb->data_dir = READ;
917 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
918
919 msb->setup_transfer(card, attr_offset, attr_len);
920
921 memstick_new_req(card->host);
922 wait_for_completion(&card->mrq_complete);
923 if (card->current_mrq.error) {
924 rc = card->current_mrq.error;
925 goto out_free_attr;
926 }
927
928 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
929 printk(KERN_ERR "%s: unrecognized device signature %x\n",
930 dev_name(&card->dev), be16_to_cpu(attr->signature));
931 rc = -ENODEV;
932 goto out_free_attr;
933 }
934
935 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
936 printk(KERN_WARNING "%s: way too many attribute entries\n",
937 dev_name(&card->dev));
938 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
939 } else
940 attr_count = attr->count;
941
942 msb->attr_group.attrs = kzalloc_objs(*msb->attr_group.attrs,
943 attr_count + 1);
944 if (!msb->attr_group.attrs) {
945 rc = -ENOMEM;
946 goto out_free_attr;
947 }
948 msb->attr_group.name = "media_attributes";
949
950 buffer = kmemdup(attr, attr_len, GFP_KERNEL);
951 if (!buffer) {
952 rc = -ENOMEM;
953 goto out_free_attr;
954 }
955
956 for (cnt = 0; cnt < attr_count; ++cnt) {
957 s_attr = kzalloc_obj(struct mspro_sys_attr);
958 if (!s_attr) {
959 rc = -ENOMEM;
960 goto out_free_buffer;
961 }
962
963 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
964 addr = be32_to_cpu(attr->entries[cnt].address);
965 s_attr->size = be32_to_cpu(attr->entries[cnt].size);
966 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
967 "size %zx\n", cnt, attr->entries[cnt].id, addr,
968 s_attr->size);
969 s_attr->id = attr->entries[cnt].id;
970 if (mspro_block_attr_name(s_attr->id))
971 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
972 mspro_block_attr_name(attr->entries[cnt].id));
973 else
974 snprintf(s_attr->name, sizeof(s_attr->name),
975 "attr_x%02x", attr->entries[cnt].id);
976
977 sysfs_attr_init(&s_attr->dev_attr.attr);
978 s_attr->dev_attr.attr.name = s_attr->name;
979 s_attr->dev_attr.attr.mode = S_IRUGO;
980 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
981
982 if (!s_attr->size)
983 continue;
984
985 s_attr->data = kmalloc(s_attr->size, GFP_KERNEL);
986 if (!s_attr->data) {
987 rc = -ENOMEM;
988 goto out_free_buffer;
989 }
990
991 if (((addr / msb->page_size) == (attr_offset / msb->page_size))
992 && (((addr + s_attr->size - 1) / msb->page_size)
993 == (attr_offset / msb->page_size))) {
994 memcpy(s_attr->data, buffer + addr % msb->page_size,
995 s_attr->size);
996 continue;
997 }
998
999 attr_offset = (addr / msb->page_size) * msb->page_size;
1000
1001 if ((attr_offset + attr_len) < (addr + s_attr->size)) {
1002 kfree(buffer);
1003 attr_len = (((addr + s_attr->size) / msb->page_size)
1004 + 1 ) * msb->page_size - attr_offset;
1005 buffer = kmalloc(attr_len, GFP_KERNEL);
1006 if (!buffer) {
1007 rc = -ENOMEM;
1008 goto out_free_attr;
1009 }
1010 }
1011
1012 sg_init_one(&msb->req_sg[0], buffer, attr_len);
1013 msb->seg_count = 1;
1014 msb->current_seg = 0;
1015 msb->current_page = 0;
1016 msb->data_dir = READ;
1017 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1018
1019 dev_dbg(&card->dev, "reading attribute range %x, %x\n",
1020 attr_offset, attr_len);
1021
1022 msb->setup_transfer(card, attr_offset, attr_len);
1023 memstick_new_req(card->host);
1024 wait_for_completion(&card->mrq_complete);
1025 if (card->current_mrq.error) {
1026 rc = card->current_mrq.error;
1027 goto out_free_buffer;
1028 }
1029
1030 memcpy(s_attr->data, buffer + addr % msb->page_size,
1031 s_attr->size);
1032 }
1033
1034 rc = 0;
1035out_free_buffer:
1036 kfree(buffer);
1037out_free_attr:
1038 kfree(attr);
1039 return rc;
1040}
1041
1042static int mspro_block_init_card(struct memstick_dev *card)
1043{
1044 struct mspro_block_data *msb = memstick_get_drvdata(card);
1045 struct memstick_host *host = card->host;
1046 int rc = 0;
1047
1048 msb->system = MEMSTICK_SYS_SERIAL;
1049 msb->setup_transfer = h_mspro_block_setup_cmd;
1050
1051 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1052 card->reg_addr.r_length = sizeof(struct ms_status_register);
1053 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1054 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1055
1056 if (memstick_set_rw_addr(card))
1057 return -EIO;
1058
1059 msb->caps = host->caps;
1060
1061 msleep(150);
1062 rc = mspro_block_wait_for_ced(card);
1063 if (rc)
1064 return rc;
1065
1066 rc = mspro_block_switch_interface(card);
1067 if (rc)
1068 return rc;
1069
1070 dev_dbg(&card->dev, "card activated\n");
1071 if (msb->system != MEMSTICK_SYS_SERIAL)
1072 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1073
1074 card->next_request = h_mspro_block_req_init;
1075 msb->mrq_handler = h_mspro_block_get_ro;
1076 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1077 sizeof(struct ms_status_register));
1078 memstick_new_req(card->host);
1079 wait_for_completion(&card->mrq_complete);
1080 if (card->current_mrq.error)
1081 return card->current_mrq.error;
1082
1083 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1084
1085 msb->page_size = 512;
1086 rc = mspro_block_read_attributes(card);
1087 if (rc)
1088 return rc;
1089
1090 dev_dbg(&card->dev, "attributes loaded\n");
1091 return 0;
1092
1093}
1094
1095static const struct blk_mq_ops mspro_mq_ops = {
1096 .queue_rq = mspro_queue_rq,
1097};
1098
1099static int mspro_block_init_disk(struct memstick_dev *card)
1100{
1101 struct mspro_block_data *msb = memstick_get_drvdata(card);
1102 struct queue_limits lim = {
1103 .logical_block_size = msb->page_size,
1104 .max_hw_sectors = MSPRO_BLOCK_MAX_PAGES,
1105 .max_segments = MSPRO_BLOCK_MAX_SEGS,
1106 .max_segment_size = MSPRO_BLOCK_MAX_PAGES * msb->page_size,
1107 };
1108 struct mspro_devinfo *dev_info = NULL;
1109 struct mspro_sys_info *sys_info = NULL;
1110 struct mspro_sys_attr *s_attr = NULL;
1111 int rc, disk_id;
1112 unsigned long capacity;
1113
1114 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1115 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1116
1117 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1118 dev_info = s_attr->data;
1119 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1120 sys_info = s_attr->data;
1121 }
1122
1123 if (!dev_info || !sys_info)
1124 return -ENODEV;
1125
1126 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1127 msb->heads = be16_to_cpu(dev_info->heads);
1128 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1129
1130 msb->page_size = be16_to_cpu(sys_info->unit_size);
1131
1132 mutex_lock(&mspro_block_disk_lock);
1133 disk_id = idr_alloc(&mspro_block_disk_idr, card, 0, 256, GFP_KERNEL);
1134 mutex_unlock(&mspro_block_disk_lock);
1135 if (disk_id < 0)
1136 return disk_id;
1137
1138 rc = blk_mq_alloc_sq_tag_set(&msb->tag_set, &mspro_mq_ops, 2, 0);
1139 if (rc)
1140 goto out_release_id;
1141
1142 msb->disk = blk_mq_alloc_disk(&msb->tag_set, &lim, card);
1143 if (IS_ERR(msb->disk)) {
1144 rc = PTR_ERR(msb->disk);
1145 goto out_free_tag_set;
1146 }
1147 msb->queue = msb->disk->queue;
1148
1149 msb->disk->major = major;
1150 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1151 msb->disk->minors = 1 << MSPRO_BLOCK_PART_SHIFT;
1152 msb->disk->fops = &ms_block_bdops;
1153 msb->disk->private_data = msb;
1154
1155 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1156
1157 capacity = be16_to_cpu(sys_info->user_block_count);
1158 capacity *= be16_to_cpu(sys_info->block_size);
1159 capacity *= msb->page_size >> 9;
1160 set_capacity(msb->disk, capacity);
1161 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1162
1163 if (msb->read_only)
1164 set_disk_ro(msb->disk, true);
1165
1166 rc = device_add_disk(&card->dev, msb->disk, NULL);
1167 if (rc)
1168 goto out_cleanup_disk;
1169 msb->active = 1;
1170 return 0;
1171
1172out_cleanup_disk:
1173 put_disk(msb->disk);
1174out_free_tag_set:
1175 blk_mq_free_tag_set(&msb->tag_set);
1176out_release_id:
1177 mutex_lock(&mspro_block_disk_lock);
1178 idr_remove(&mspro_block_disk_idr, disk_id);
1179 mutex_unlock(&mspro_block_disk_lock);
1180 return rc;
1181}
1182
1183static void mspro_block_data_clear(struct mspro_block_data *msb)
1184{
1185 int cnt;
1186 struct mspro_sys_attr *s_attr;
1187
1188 if (msb->attr_group.attrs) {
1189 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1190 s_attr = mspro_from_sysfs_attr(msb->attr_group
1191 .attrs[cnt]);
1192 kfree(s_attr->data);
1193 kfree(s_attr);
1194 }
1195 kfree(msb->attr_group.attrs);
1196 }
1197
1198 msb->card = NULL;
1199}
1200
1201static int mspro_block_check_card(struct memstick_dev *card)
1202{
1203 struct mspro_block_data *msb = memstick_get_drvdata(card);
1204
1205 return (msb->active == 1);
1206}
1207
1208static int mspro_block_probe(struct memstick_dev *card)
1209{
1210 struct mspro_block_data *msb;
1211 int rc = 0;
1212
1213 msb = kzalloc_obj(struct mspro_block_data);
1214 if (!msb)
1215 return -ENOMEM;
1216 memstick_set_drvdata(card, msb);
1217 msb->card = card;
1218 spin_lock_init(&msb->q_lock);
1219
1220 rc = mspro_block_init_card(card);
1221
1222 if (rc)
1223 goto out_free;
1224
1225 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1226 if (rc)
1227 goto out_free;
1228
1229 rc = mspro_block_init_disk(card);
1230 if (!rc) {
1231 card->check = mspro_block_check_card;
1232 card->stop = mspro_block_stop;
1233 card->start = mspro_block_start;
1234 return 0;
1235 }
1236
1237 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1238out_free:
1239 memstick_set_drvdata(card, NULL);
1240 mspro_block_data_clear(msb);
1241 kfree(msb);
1242 return rc;
1243}
1244
1245static void mspro_block_remove(struct memstick_dev *card)
1246{
1247 struct mspro_block_data *msb = memstick_get_drvdata(card);
1248 unsigned long flags;
1249
1250 spin_lock_irqsave(&msb->q_lock, flags);
1251 msb->eject = 1;
1252 spin_unlock_irqrestore(&msb->q_lock, flags);
1253 blk_mq_start_hw_queues(msb->queue);
1254
1255 del_gendisk(msb->disk);
1256 dev_dbg(&card->dev, "mspro block remove\n");
1257
1258 blk_mq_free_tag_set(&msb->tag_set);
1259 msb->queue = NULL;
1260
1261 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1262
1263 mutex_lock(&mspro_block_disk_lock);
1264 mspro_block_data_clear(msb);
1265 mutex_unlock(&mspro_block_disk_lock);
1266
1267 put_disk(msb->disk);
1268 memstick_set_drvdata(card, NULL);
1269}
1270
1271#ifdef CONFIG_PM
1272
1273static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1274{
1275 struct mspro_block_data *msb = memstick_get_drvdata(card);
1276 unsigned long flags;
1277
1278 blk_mq_stop_hw_queues(msb->queue);
1279
1280 spin_lock_irqsave(&msb->q_lock, flags);
1281 msb->active = 0;
1282 spin_unlock_irqrestore(&msb->q_lock, flags);
1283
1284 return 0;
1285}
1286
1287static int mspro_block_resume(struct memstick_dev *card)
1288{
1289 struct mspro_block_data *msb = memstick_get_drvdata(card);
1290 int rc = 0;
1291
1292#ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1293
1294 struct mspro_block_data *new_msb;
1295 struct memstick_host *host = card->host;
1296 struct mspro_sys_attr *s_attr, *r_attr;
1297 unsigned char cnt;
1298
1299 mutex_lock(&host->lock);
1300 new_msb = kzalloc_obj(struct mspro_block_data);
1301 if (!new_msb) {
1302 rc = -ENOMEM;
1303 goto out_unlock;
1304 }
1305
1306 new_msb->card = card;
1307 memstick_set_drvdata(card, new_msb);
1308 rc = mspro_block_init_card(card);
1309 if (rc)
1310 goto out_free;
1311
1312 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1313 && msb->attr_group.attrs[cnt]; ++cnt) {
1314 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1315 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1316
1317 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1318 && r_attr->id == s_attr->id) {
1319 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1320 break;
1321
1322 msb->active = 1;
1323 break;
1324 }
1325 }
1326
1327out_free:
1328 memstick_set_drvdata(card, msb);
1329 mspro_block_data_clear(new_msb);
1330 kfree(new_msb);
1331out_unlock:
1332 mutex_unlock(&host->lock);
1333
1334#endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1335
1336 blk_mq_start_hw_queues(msb->queue);
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 const struct memstick_device_id mspro_block_id_tbl[] = {
1348 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1349 MEMSTICK_CLASS_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);