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ms_block: use blk_mq_alloc_disk
[linux-2.6-block.git] / drivers / memstick / core / mspro_block.c
CommitLineData
d2912cb1 1// SPDX-License-Identifier: GPL-2.0-only
baf8532a
AD		 2/*
3 * Sony MemoryStick Pro storage support
4 *
5 * Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
6 *
baf8532a
AD		 7 * Special thanks to Carlos Corbacho for providing various MemoryStick cards
8 * that made this driver possible.
baf8532a
AD		 9 */
10
d0be1227 11#include <linux/blk-mq.h>
baf8532a
AD		 12#include <linux/idr.h>
13#include <linux/hdreg.h>
14#include <linux/kthread.h>
59367258 15#include <linux/delay.h>
5a0e3ad6 16#include <linux/slab.h>
2a48fc0a 17#include <linux/mutex.h>
baf8532a 18#include <linux/memstick.h>
c47e7893 19#include <linux/module.h>
baf8532a
AD		 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
8e82f8c3
AD		 32#define MSPRO_BLOCK_PART_SHIFT 3
33
baf8532a
AD		 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 {
69347a23
HH		 54 __be32 address;
55 __be32 size;
baf8532a
AD		 56 unsigned char id;
57 unsigned char reserved[3];
58} __attribute__((packed));
59
60struct mspro_attribute {
69347a23 61 __be16 signature;
baf8532a
AD		 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;
69347a23
HH		 71 __be16 block_size;
72 __be16 block_count;
73 __be16 user_block_count;
74 __be16 page_size;
baf8532a
AD		 75 unsigned char reserved1[2];
76 unsigned char assembly_date[8];
69347a23 77 __be32 serial_number;
baf8532a
AD		 78 unsigned char assembly_maker_code;
79 unsigned char assembly_model_code[3];
69347a23
HH		 80 __be16 memory_maker_code;
81 __be16 memory_model_code;
baf8532a
AD		 82 unsigned char reserved2[4];
83 unsigned char vcc;
84 unsigned char vpp;
69347a23
HH		 85 __be16 controller_number;
86 __be16 controller_function;
87 __be16 start_sector;
88 __be16 unit_size;
baf8532a
AD		 89 unsigned char ms_sub_class;
90 unsigned char reserved3[4];
91 unsigned char interface_type;
69347a23 92 __be16 controller_code;
baf8532a
AD		 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
efb2742e
AD		 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
baf8532a 125struct mspro_devinfo {
69347a23
HH		 126 __be16 cylinders;
127 __be16 heads;
128 __be16 bytes_per_track;
129 __be16 bytes_per_sector;
130 __be16 sectors_per_track;
baf8532a
AD		 131 unsigned char reserved[6];
132} __attribute__((packed));
133
134struct mspro_block_data {
135 struct memstick_dev *card;
136 unsigned int usage_count;
ead70773 137 unsigned int caps;
baf8532a
AD		 138 struct gendisk *disk;
139 struct request_queue *queue;
f1d82698 140 struct request *block_req;
d0be1227 141 struct blk_mq_tag_set tag_set;
baf8532a 142 spinlock_t q_lock;
baf8532a
AD		 143
144 unsigned short page_size;
145 unsigned short cylinders;
146 unsigned short heads;
147 unsigned short sectors_per_track;
148
149 unsigned char system;
150 unsigned char read_only:1,
f1d82698 151 eject:1,
f1d82698
AD		 152 data_dir:1,
153 active:1;
baf8532a
AD		 154 unsigned char transfer_cmd;
155
156 int (*mrq_handler)(struct memstick_dev *card,
157 struct memstick_request **mrq);
158
496fc1a6
AD		 159
160 /* Default request setup function for data access method preferred by
161 * this host instance.
162 */
163 void (*setup_transfer)(struct memstick_dev *card,
164 u64 offset, size_t length);
165
baf8532a
AD		 166 struct attribute_group attr_group;
167
168 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
169 unsigned int seg_count;
170 unsigned int current_seg;
f1d82698 171 unsigned int current_page;
baf8532a
AD		 172};
173
174static DEFINE_IDR(mspro_block_disk_idr);
175static DEFINE_MUTEX(mspro_block_disk_lock);
176
f1d82698
AD		 177static int mspro_block_complete_req(struct memstick_dev *card, int error);
178
baf8532a
AD		 179/*** Block device ***/
180
5d9a54b6 181static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
baf8532a 182{
5d9a54b6 183 struct gendisk *disk = bdev->bd_disk;
baf8532a
AD		 184 struct mspro_block_data *msb = disk->private_data;
185 int rc = -ENXIO;
186
187 mutex_lock(&mspro_block_disk_lock);
188
189 if (msb && msb->card) {
190 msb->usage_count++;
5d9a54b6 191 if ((mode & FMODE_WRITE) && msb->read_only)
baf8532a
AD		 192 rc = -EROFS;
193 else
194 rc = 0;
195 }
196
197 mutex_unlock(&mspro_block_disk_lock);
198
199 return rc;
200}
201
202
db2a144b 203static void mspro_block_disk_release(struct gendisk *disk)
baf8532a
AD		 204{
205 struct mspro_block_data *msb = disk->private_data;
f331c029 206 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
baf8532a
AD		 207
208 mutex_lock(&mspro_block_disk_lock);
209
f1d82698
AD		 210 if (msb) {
211 if (msb->usage_count)
212 msb->usage_count--;
213
baf8532a
AD		 214 if (!msb->usage_count) {
215 kfree(msb);
216 disk->private_data = NULL;
217 idr_remove(&mspro_block_disk_idr, disk_id);
218 put_disk(disk);
219 }
220 }
221
222 mutex_unlock(&mspro_block_disk_lock);
baf8532a
AD		 223}
224
db2a144b 225static void mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
baf8532a 226{
db2a144b 227 mspro_block_disk_release(disk);
baf8532a
AD		 228}
229
230static int mspro_block_bd_getgeo(struct block_device *bdev,
231 struct hd_geometry *geo)
232{
233 struct mspro_block_data *msb = bdev->bd_disk->private_data;
234
235 geo->heads = msb->heads;
236 geo->sectors = msb->sectors_per_track;
237 geo->cylinders = msb->cylinders;
238
239 return 0;
240}
241
83d5cde4 242static const struct block_device_operations ms_block_bdops = {
5d9a54b6
AV		 243 .open = mspro_block_bd_open,
244 .release = mspro_block_bd_release,
baf8532a
AD		 245 .getgeo = mspro_block_bd_getgeo,
246 .owner = THIS_MODULE
247};
248
249/*** Information ***/
250
251static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
252{
253 struct device_attribute *dev_attr
254 = container_of(attr, struct device_attribute, attr);
255 return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
256}
257
258static const char *mspro_block_attr_name(unsigned char tag)
259{
260 switch (tag) {
261 case MSPRO_BLOCK_ID_SYSINFO:
262 return "attr_sysinfo";
263 case MSPRO_BLOCK_ID_MODELNAME:
264 return "attr_modelname";
265 case MSPRO_BLOCK_ID_MBR:
266 return "attr_mbr";
267 case MSPRO_BLOCK_ID_PBR16:
268 return "attr_pbr16";
269 case MSPRO_BLOCK_ID_PBR32:
270 return "attr_pbr32";
271 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
272 return "attr_specfilevalues1";
273 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
274 return "attr_specfilevalues2";
275 case MSPRO_BLOCK_ID_DEVINFO:
276 return "attr_devinfo";
277 default:
278 return NULL;
8c3c0aca 279 }
baf8532a
AD		 280}
281
282typedef ssize_t (*sysfs_show_t)(struct device *dev,
283 struct device_attribute *attr,
284 char *buffer);
285
286static ssize_t mspro_block_attr_show_default(struct device *dev,
287 struct device_attribute *attr,
288 char *buffer)
289{
290 struct mspro_sys_attr *s_attr = container_of(attr,
291 struct mspro_sys_attr,
292 dev_attr);
293
294 ssize_t cnt, rc = 0;
295
296 for (cnt = 0; cnt < s_attr->size; cnt++) {
297 if (cnt && !(cnt % 16)) {
298 if (PAGE_SIZE - rc)
299 buffer[rc++] = '\n';
300 }
301
302 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
303 ((unsigned char *)s_attr->data)[cnt]);
304 }
305 return rc;
306}
307
308static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
309 struct device_attribute *attr,
310 char *buffer)
311{
312 struct mspro_sys_attr *x_attr = container_of(attr,
313 struct mspro_sys_attr,
314 dev_attr);
315 struct mspro_sys_info *x_sys = x_attr->data;
316 ssize_t rc = 0;
251cc9b9
AD		 317 int date_tz = 0, date_tz_f = 0;
318
319 if (x_sys->assembly_date[0] > 0x80U) {
320 date_tz = (~x_sys->assembly_date[0]) + 1;
321 date_tz_f = date_tz & 3;
322 date_tz >>= 2;
323 date_tz = -date_tz;
324 date_tz_f *= 15;
325 } else if (x_sys->assembly_date[0] < 0x80U) {
326 date_tz = x_sys->assembly_date[0];
327 date_tz_f = date_tz & 3;
328 date_tz >>= 2;
329 date_tz_f *= 15;
330 }
baf8532a
AD		 331
332 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
333 x_sys->class);
334 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
335 be16_to_cpu(x_sys->block_size));
336 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
337 be16_to_cpu(x_sys->block_count));
338 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
339 be16_to_cpu(x_sys->user_block_count));
340 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
341 be16_to_cpu(x_sys->page_size));
342 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
251cc9b9
AD		 343 "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
344 date_tz, date_tz_f,
69347a23 345 be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
baf8532a
AD		 346 x_sys->assembly_date[3], x_sys->assembly_date[4],
347 x_sys->assembly_date[5], x_sys->assembly_date[6],
348 x_sys->assembly_date[7]);
349 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
350 be32_to_cpu(x_sys->serial_number));
351 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
352 "assembly maker code: %x\n",
353 x_sys->assembly_maker_code);
354 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
355 "%02x%02x%02x\n", x_sys->assembly_model_code[0],
356 x_sys->assembly_model_code[1],
357 x_sys->assembly_model_code[2]);
358 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
359 be16_to_cpu(x_sys->memory_maker_code));
360 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
361 be16_to_cpu(x_sys->memory_model_code));
362 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
363 x_sys->vcc);
364 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
365 x_sys->vpp);
366 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
367 be16_to_cpu(x_sys->controller_number));
368 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
369 "controller function: %x\n",
370 be16_to_cpu(x_sys->controller_function));
371 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
372 be16_to_cpu(x_sys->start_sector));
373 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
374 be16_to_cpu(x_sys->unit_size));
375 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
376 x_sys->ms_sub_class);
377 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
378 x_sys->interface_type);
379 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
380 be16_to_cpu(x_sys->controller_code));
381 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
382 x_sys->format_type);
383 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
384 x_sys->device_type);
385 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
386 x_sys->mspro_id);
387 return rc;
388}
389
390static ssize_t mspro_block_attr_show_modelname(struct device *dev,
391 struct device_attribute *attr,
392 char *buffer)
393{
394 struct mspro_sys_attr *s_attr = container_of(attr,
395 struct mspro_sys_attr,
396 dev_attr);
397
398 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
399}
400
401static ssize_t mspro_block_attr_show_mbr(struct device *dev,
402 struct device_attribute *attr,
403 char *buffer)
404{
405 struct mspro_sys_attr *x_attr = container_of(attr,
406 struct mspro_sys_attr,
407 dev_attr);
408 struct mspro_mbr *x_mbr = x_attr->data;
409 ssize_t rc = 0;
410
411 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
412 x_mbr->boot_partition);
413 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
414 x_mbr->start_head);
415 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
416 x_mbr->start_sector);
417 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
418 x_mbr->start_cylinder);
419 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
420 x_mbr->partition_type);
421 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
422 x_mbr->end_head);
423 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
424 x_mbr->end_sector);
425 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
426 x_mbr->end_cylinder);
427 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
428 x_mbr->start_sectors);
429 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
430 "sectors per partition: %x\n",
431 x_mbr->sectors_per_partition);
432 return rc;
433}
434
efb2742e
AD		 435static ssize_t mspro_block_attr_show_specfile(struct device *dev,
436 struct device_attribute *attr,
437 char *buffer)
438{
439 struct mspro_sys_attr *x_attr = container_of(attr,
440 struct mspro_sys_attr,
441 dev_attr);
442 struct mspro_specfile *x_spfile = x_attr->data;
443 char name[9], ext[4];
444 ssize_t rc = 0;
445
446 memcpy(name, x_spfile->name, 8);
447 name[8] = 0;
448 memcpy(ext, x_spfile->ext, 3);
449 ext[3] = 0;
450
451 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
452 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
453 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
454 x_spfile->attr);
455 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
456 x_spfile->time >> 11,
457 (x_spfile->time >> 5) & 0x3f,
458 (x_spfile->time & 0x1f) * 2);
459 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
460 (x_spfile->date >> 9) + 1980,
461 (x_spfile->date >> 5) & 0xf,
462 x_spfile->date & 0x1f);
463 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
464 x_spfile->cluster);
465 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
466 x_spfile->size);
467 return rc;
468}
469
baf8532a
AD		 470static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
471 struct device_attribute *attr,
472 char *buffer)
473{
474 struct mspro_sys_attr *x_attr = container_of(attr,
475 struct mspro_sys_attr,
476 dev_attr);
477 struct mspro_devinfo *x_devinfo = x_attr->data;
478 ssize_t rc = 0;
479
480 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
481 be16_to_cpu(x_devinfo->cylinders));
482 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
483 be16_to_cpu(x_devinfo->heads));
484 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
485 be16_to_cpu(x_devinfo->bytes_per_track));
486 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
487 be16_to_cpu(x_devinfo->bytes_per_sector));
488 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
489 be16_to_cpu(x_devinfo->sectors_per_track));
490 return rc;
491}
492
493static sysfs_show_t mspro_block_attr_show(unsigned char tag)
494{
495 switch (tag) {
496 case MSPRO_BLOCK_ID_SYSINFO:
497 return mspro_block_attr_show_sysinfo;
498 case MSPRO_BLOCK_ID_MODELNAME:
499 return mspro_block_attr_show_modelname;
500 case MSPRO_BLOCK_ID_MBR:
501 return mspro_block_attr_show_mbr;
efb2742e
AD		 502 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
503 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
504 return mspro_block_attr_show_specfile;
baf8532a
AD		 505 case MSPRO_BLOCK_ID_DEVINFO:
506 return mspro_block_attr_show_devinfo;
507 default:
508 return mspro_block_attr_show_default;
509 }
510}
511
512/*** Protocol handlers ***/
513
514/*
515 * Functions prefixed with "h_" are protocol callbacks. They can be called from
516 * interrupt context. Return value of 0 means that request processing is still
517 * ongoing, while special error value of -EAGAIN means that current request is
518 * finished (and request processor should come back some time later).
519 */
520
521static int h_mspro_block_req_init(struct memstick_dev *card,
522 struct memstick_request **mrq)
523{
524 struct mspro_block_data *msb = memstick_get_drvdata(card);
525
526 *mrq = &card->current_mrq;
527 card->next_request = msb->mrq_handler;
528 return 0;
529}
530
531static int h_mspro_block_default(struct memstick_dev *card,
532 struct memstick_request **mrq)
533{
f1d82698
AD		 534 return mspro_block_complete_req(card, (*mrq)->error);
535}
536
537static int h_mspro_block_default_bad(struct memstick_dev *card,
538 struct memstick_request **mrq)
539{
540 return -ENXIO;
baf8532a
AD		 541}
542
543static int h_mspro_block_get_ro(struct memstick_dev *card,
544 struct memstick_request **mrq)
545{
546 struct mspro_block_data *msb = memstick_get_drvdata(card);
547
f1d82698
AD		 548 if (!(*mrq)->error) {
549 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
550 & MEMSTICK_STATUS0_WP)
551 msb->read_only = 1;
552 else
553 msb->read_only = 0;
baf8532a
AD		 554 }
555
f1d82698 556 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 557}
558
559static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
560 struct memstick_request **mrq)
561{
baf8532a
AD		 562 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
563
f1d82698
AD		 564 if (!(*mrq)->error) {
565 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
566 (*mrq)->error = -EFAULT;
567 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
568 return 0;
baf8532a
AD		 569 }
570
f1d82698 571 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 572}
573
574static int h_mspro_block_transfer_data(struct memstick_dev *card,
575 struct memstick_request **mrq)
576{
baf8532a
AD		 577 struct mspro_block_data *msb = memstick_get_drvdata(card);
578 unsigned char t_val = 0;
579 struct scatterlist t_sg = { 0 };
580 size_t t_offset;
581
f1d82698
AD		 582 if ((*mrq)->error)
583 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 584
585 switch ((*mrq)->tpc) {
586 case MS_TPC_WRITE_REG:
587 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
ead70773 588 (*mrq)->need_card_int = 1;
baf8532a
AD		 589 return 0;
590 case MS_TPC_SET_CMD:
591 t_val = (*mrq)->int_reg;
592 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
ead70773 593 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
baf8532a
AD		 594 goto has_int_reg;
595 return 0;
596 case MS_TPC_GET_INT:
597 t_val = (*mrq)->data[0];
598has_int_reg:
599 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
600 t_val = MSPRO_CMD_STOP;
601 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
602 card->next_request = h_mspro_block_default;
603 return 0;
604 }
605
606 if (msb->current_page
607 == (msb->req_sg[msb->current_seg].length
608 / msb->page_size)) {
609 msb->current_page = 0;
610 msb->current_seg++;
611
612 if (msb->current_seg == msb->seg_count) {
613 if (t_val & MEMSTICK_INT_CED) {
f1d82698
AD		 614 return mspro_block_complete_req(card,
615 0);
baf8532a
AD		 616 } else {
617 card->next_request
618 = h_mspro_block_wait_for_ced;
619 memstick_init_req(*mrq, MS_TPC_GET_INT,
620 NULL, 1);
621 return 0;
622 }
623 }
624 }
625
626 if (!(t_val & MEMSTICK_INT_BREQ)) {
627 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
628 return 0;
629 }
630
631 t_offset = msb->req_sg[msb->current_seg].offset;
632 t_offset += msb->current_page * msb->page_size;
633
634 sg_set_page(&t_sg,
635 nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
636 t_offset >> PAGE_SHIFT),
637 msb->page_size, offset_in_page(t_offset));
638
639 memstick_init_req_sg(*mrq, msb->data_dir == READ
640 ? MS_TPC_READ_LONG_DATA
641 : MS_TPC_WRITE_LONG_DATA,
642 &t_sg);
ead70773 643 (*mrq)->need_card_int = 1;
baf8532a
AD		 644 return 0;
645 case MS_TPC_READ_LONG_DATA:
646 case MS_TPC_WRITE_LONG_DATA:
647 msb->current_page++;
ead70773 648 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
baf8532a
AD		 649 t_val = (*mrq)->int_reg;
650 goto has_int_reg;
651 } else {
652 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
653 return 0;
654 }
655
656 default:
657 BUG();
658 }
659}
660
496fc1a6
AD		 661/*** Transfer setup functions for different access methods. ***/
662
663/** Setup data transfer request for SET_CMD TPC with arguments in card
664 * registers.
665 *
666 * @card Current media instance
667 * @offset Target data offset in bytes
668 * @length Required transfer length in bytes.
669 */
670static void h_mspro_block_setup_cmd(struct memstick_dev *card, u64 offset,
671 size_t length)
672{
673 struct mspro_block_data *msb = memstick_get_drvdata(card);
674 struct mspro_param_register param = {
675 .system = msb->system,
676 .data_count = cpu_to_be16((uint16_t)(length / msb->page_size)),
677 /* ISO C90 warning precludes direct initialization for now. */
678 .data_address = 0,
679 .tpc_param = 0
680 };
681
682 do_div(offset, msb->page_size);
683 param.data_address = cpu_to_be32((uint32_t)offset);
684
685 card->next_request = h_mspro_block_req_init;
686 msb->mrq_handler = h_mspro_block_transfer_data;
687 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
688 &param, sizeof(param));
689}
690
baf8532a
AD		 691/*** Data transfer ***/
692
61009f82 693static int mspro_block_issue_req(struct memstick_dev *card)
baf8532a
AD		 694{
695 struct mspro_block_data *msb = memstick_get_drvdata(card);
496fc1a6 696 u64 t_off;
f1d82698 697 unsigned int count;
baf8532a 698
61009f82 699 while (true) {
f1d82698 700 msb->current_page = 0;
baf8532a 701 msb->current_seg = 0;
f1d82698
AD		 702 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
703 msb->block_req,
704 msb->req_sg);
baf8532a 705
f1d82698 706 if (!msb->seg_count) {
d0be1227 707 unsigned int bytes = blk_rq_cur_bytes(msb->block_req);
61009f82 708 bool chunk;
d0be1227
JA		 709
710 chunk = blk_update_request(msb->block_req,
711 BLK_STS_RESOURCE,
712 bytes);
713 if (chunk)
714 continue;
715 __blk_mq_end_request(msb->block_req,
716 BLK_STS_RESOURCE);
717 msb->block_req = NULL;
61009f82 718 return -EAGAIN;
f1d82698 719 }
baf8532a 720
496fc1a6
AD		 721 t_off = blk_rq_pos(msb->block_req);
722 t_off <<= 9;
1011c1b9 723 count = blk_rq_bytes(msb->block_req);
baf8532a 724
496fc1a6 725 msb->setup_transfer(card, t_off, count);
f1d82698
AD		 726
727 msb->data_dir = rq_data_dir(msb->block_req);
728 msb->transfer_cmd = msb->data_dir == READ
729 ? MSPRO_CMD_READ_DATA
730 : MSPRO_CMD_WRITE_DATA;
731
f1d82698
AD		 732 memstick_new_req(card->host);
733 return 0;
734 }
baf8532a
AD		 735}
736
f1d82698 737static int mspro_block_complete_req(struct memstick_dev *card, int error)
baf8532a 738{
f1d82698 739 struct mspro_block_data *msb = memstick_get_drvdata(card);
d0be1227
JA		 740 int cnt;
741 bool chunk;
f1d82698 742 unsigned int t_len = 0;
baf8532a
AD		 743 unsigned long flags;
744
745 spin_lock_irqsave(&msb->q_lock, flags);
d0be1227 746 dev_dbg(&card->dev, "complete %d, %d\n", msb->block_req ? 1 : 0,
f1d82698
AD		 747 error);
748
d0be1227 749 if (msb->block_req) {
f1d82698
AD		 750 /* Nothing to do - not really an error */
751 if (error == -EAGAIN)
752 error = 0;
753
754 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
755 if (msb->data_dir == READ) {
13f6b191 756 for (cnt = 0; cnt < msb->current_seg; cnt++) {
f1d82698
AD		 757 t_len += msb->req_sg[cnt].length
758 / msb->page_size;
759
760 if (msb->current_page)
761 t_len += msb->current_page - 1;
762
763 t_len *= msb->page_size;
13f6b191 764 }
f1d82698
AD		 765 }
766 } else
1011c1b9 767 t_len = blk_rq_bytes(msb->block_req);
f1d82698
AD		 768
769 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
770
771 if (error && !t_len)
772 t_len = blk_rq_cur_bytes(msb->block_req);
773
d0be1227 774 chunk = blk_update_request(msb->block_req,
2a842aca 775 errno_to_blk_status(error), t_len);
d0be1227 776 if (chunk) {
61009f82 777 error = mspro_block_issue_req(card);
d0be1227
JA		 778 if (!error)
779 goto out;
780 } else {
781 __blk_mq_end_request(msb->block_req,
782 errno_to_blk_status(error));
783 msb->block_req = NULL;
784 }
f1d82698
AD		 785 } else {
786 if (!error)
787 error = -EAGAIN;
788 }
789
790 card->next_request = h_mspro_block_default_bad;
791 complete_all(&card->mrq_complete);
792out:
baf8532a 793 spin_unlock_irqrestore(&msb->q_lock, flags);
f1d82698 794 return error;
baf8532a
AD		 795}
796
17017d8d
AD		 797static void mspro_block_stop(struct memstick_dev *card)
798{
799 struct mspro_block_data *msb = memstick_get_drvdata(card);
800 int rc = 0;
801 unsigned long flags;
802
803 while (1) {
804 spin_lock_irqsave(&msb->q_lock, flags);
d0be1227
JA		 805 if (!msb->block_req) {
806 blk_mq_stop_hw_queues(msb->queue);
17017d8d
AD		 807 rc = 1;
808 }
809 spin_unlock_irqrestore(&msb->q_lock, flags);
810
811 if (rc)
812 break;
813
814 wait_for_completion(&card->mrq_complete);
815 }
816}
817
818static void mspro_block_start(struct memstick_dev *card)
819{
820 struct mspro_block_data *msb = memstick_get_drvdata(card);
17017d8d 821
d0be1227 822 blk_mq_start_hw_queues(msb->queue);
17017d8d
AD		 823}
824
d0be1227
JA		 825static blk_status_t mspro_queue_rq(struct blk_mq_hw_ctx *hctx,
826 const struct blk_mq_queue_data *bd)
baf8532a 827{
d0be1227 828 struct memstick_dev *card = hctx->queue->queuedata;
baf8532a 829 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a 830
d0be1227 831 spin_lock_irq(&msb->q_lock);
f1d82698 832
d0be1227
JA		 833 if (msb->block_req) {
834 spin_unlock_irq(&msb->q_lock);
835 return BLK_STS_DEV_RESOURCE;
836 }
f1d82698 837
d0be1227
JA		 838 if (msb->eject) {
839 spin_unlock_irq(&msb->q_lock);
840 blk_mq_start_request(bd->rq);
841 return BLK_STS_IOERR;
baf8532a 842 }
f1d82698 843
d0be1227
JA		 844 msb->block_req = bd->rq;
845 blk_mq_start_request(bd->rq);
846
61009f82 847 if (mspro_block_issue_req(card))
d0be1227
JA		 848 msb->block_req = NULL;
849
850 spin_unlock_irq(&msb->q_lock);
851 return BLK_STS_OK;
baf8532a
AD		 852}
853
854/*** Initialization ***/
855
856static int mspro_block_wait_for_ced(struct memstick_dev *card)
857{
858 struct mspro_block_data *msb = memstick_get_drvdata(card);
859
860 card->next_request = h_mspro_block_req_init;
861 msb->mrq_handler = h_mspro_block_wait_for_ced;
862 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
863 memstick_new_req(card->host);
864 wait_for_completion(&card->mrq_complete);
865 return card->current_mrq.error;
866}
867
962ee1b1
AD		 868static int mspro_block_set_interface(struct memstick_dev *card,
869 unsigned char sys_reg)
baf8532a
AD		 870{
871 struct memstick_host *host = card->host;
872 struct mspro_block_data *msb = memstick_get_drvdata(card);
873 struct mspro_param_register param = {
962ee1b1 874 .system = sys_reg,
baf8532a
AD		 875 .data_count = 0,
876 .data_address = 0,
e1f19995 877 .tpc_param = 0
baf8532a
AD		 878 };
879
880 card->next_request = h_mspro_block_req_init;
881 msb->mrq_handler = h_mspro_block_default;
882 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
883 sizeof(param));
884 memstick_new_req(host);
885 wait_for_completion(&card->mrq_complete);
962ee1b1
AD		 886 return card->current_mrq.error;
887}
888
889static int mspro_block_switch_interface(struct memstick_dev *card)
890{
891 struct memstick_host *host = card->host;
892 struct mspro_block_data *msb = memstick_get_drvdata(card);
893 int rc = 0;
894
8e82f8c3 895try_again:
962ee1b1
AD		 896 if (msb->caps & MEMSTICK_CAP_PAR4)
897 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
898 else
899 return 0;
900
901 if (rc) {
902 printk(KERN_WARNING
903 "%s: could not switch to 4-bit mode, error %d\n",
0252c3b4 904 dev_name(&card->dev), rc);
962ee1b1
AD		 905 return 0;
906 }
baf8532a 907
e1f19995
AD		 908 msb->system = MEMSTICK_SYS_PAR4;
909 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
962ee1b1 910 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
0252c3b4 911 dev_name(&card->dev));
962ee1b1
AD		 912
913 if (msb->caps & MEMSTICK_CAP_PAR8) {
914 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
915
916 if (!rc) {
917 msb->system = MEMSTICK_SYS_PAR8;
918 host->set_param(host, MEMSTICK_INTERFACE,
919 MEMSTICK_PAR8);
920 printk(KERN_INFO
921 "%s: switching to 8-bit parallel mode\n",
0252c3b4 922 dev_name(&card->dev));
962ee1b1
AD		 923 } else
924 printk(KERN_WARNING
925 "%s: could not switch to 8-bit mode, error %d\n",
0252c3b4 926 dev_name(&card->dev), rc);
962ee1b1 927 }
baf8532a
AD		 928
929 card->next_request = h_mspro_block_req_init;
930 msb->mrq_handler = h_mspro_block_default;
931 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
932 memstick_new_req(card->host);
933 wait_for_completion(&card->mrq_complete);
962ee1b1 934 rc = card->current_mrq.error;
baf8532a 935
962ee1b1
AD		 936 if (rc) {
937 printk(KERN_WARNING
938 "%s: interface error, trying to fall back to serial\n",
0252c3b4 939 dev_name(&card->dev));
59367258
AD		 940 msb->system = MEMSTICK_SYS_SERIAL;
941 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
962ee1b1 942 msleep(10);
59367258 943 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
baf8532a 944 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
59367258 945
962ee1b1
AD		 946 rc = memstick_set_rw_addr(card);
947 if (!rc)
948 rc = mspro_block_set_interface(card, msb->system);
8e82f8c3
AD		 949
950 if (!rc) {
951 msleep(150);
952 rc = mspro_block_wait_for_ced(card);
953 if (rc)
954 return rc;
955
956 if (msb->caps & MEMSTICK_CAP_PAR8) {
957 msb->caps &= ~MEMSTICK_CAP_PAR8;
958 goto try_again;
959 }
960 }
baf8532a 961 }
962ee1b1 962 return rc;
baf8532a
AD		 963}
964
965/* Memory allocated for attributes by this function should be freed by
25985edc 966 * mspro_block_data_clear, no matter if the initialization process succeeded
baf8532a
AD		 967 * or failed.
968 */
969static int mspro_block_read_attributes(struct memstick_dev *card)
970{
971 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 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;
496fc1a6
AD		 976 /* While normally physical device offsets, represented here by
977 * attr_offset and attr_len will be of large numeric types, we can be
978 * sure, that attributes are close enough to the beginning of the
979 * device, to save ourselves some trouble.
980 */
981 unsigned int addr, attr_offset = 0, attr_len = msb->page_size;
baf8532a
AD		 982
983 attr = kmalloc(msb->page_size, GFP_KERNEL);
984 if (!attr)
985 return -ENOMEM;
986
987 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
988 msb->seg_count = 1;
989 msb->current_seg = 0;
990 msb->current_page = 0;
991 msb->data_dir = READ;
992 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
993
496fc1a6
AD		 994 msb->setup_transfer(card, attr_offset, attr_len);
995
baf8532a
AD		 996 memstick_new_req(card->host);
997 wait_for_completion(&card->mrq_complete);
998 if (card->current_mrq.error) {
999 rc = card->current_mrq.error;
1000 goto out_free_attr;
1001 }
1002
1003 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
1004 printk(KERN_ERR "%s: unrecognized device signature %x\n",
0252c3b4 1005 dev_name(&card->dev), be16_to_cpu(attr->signature));
baf8532a
AD		 1006 rc = -ENODEV;
1007 goto out_free_attr;
1008 }
1009
1010 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1011 printk(KERN_WARNING "%s: way too many attribute entries\n",
0252c3b4 1012 dev_name(&card->dev));
baf8532a
AD		 1013 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1014 } else
1015 attr_count = attr->count;
1016
be2d3f97
MN		 1017 msb->attr_group.attrs = kcalloc(attr_count + 1,
1018 sizeof(*msb->attr_group.attrs),
baf8532a
AD		 1019 GFP_KERNEL);
1020 if (!msb->attr_group.attrs) {
1021 rc = -ENOMEM;
1022 goto out_free_attr;
1023 }
1024 msb->attr_group.name = "media_attributes";
1025
de6cdcb5 1026 buffer = kmemdup(attr, attr_len, GFP_KERNEL);
baf8532a
AD		 1027 if (!buffer) {
1028 rc = -ENOMEM;
1029 goto out_free_attr;
1030 }
baf8532a
AD		 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);
496fc1a6 1041 s_attr->size = be32_to_cpu(attr->entries[cnt].size);
baf8532a 1042 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
496fc1a6
AD		 1043 "size %zx\n", cnt, attr->entries[cnt].id, addr,
1044 s_attr->size);
baf8532a
AD		 1045 s_attr->id = attr->entries[cnt].id;
1046 if (mspro_block_attr_name(s_attr->id))
1047 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1048 mspro_block_attr_name(attr->entries[cnt].id));
1049 else
1050 snprintf(s_attr->name, sizeof(s_attr->name),
1051 "attr_x%02x", attr->entries[cnt].id);
1052
21fd0495 1053 sysfs_attr_init(&s_attr->dev_attr.attr);
baf8532a
AD		 1054 s_attr->dev_attr.attr.name = s_attr->name;
1055 s_attr->dev_attr.attr.mode = S_IRUGO;
baf8532a
AD		 1056 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1057
496fc1a6 1058 if (!s_attr->size)
baf8532a
AD		 1059 continue;
1060
496fc1a6 1061 s_attr->data = kmalloc(s_attr->size, GFP_KERNEL);
baf8532a
AD		 1062 if (!s_attr->data) {
1063 rc = -ENOMEM;
1064 goto out_free_buffer;
1065 }
1066
496fc1a6
AD		 1067 if (((addr / msb->page_size) == (attr_offset / msb->page_size))
1068 && (((addr + s_attr->size - 1) / msb->page_size)
1069 == (attr_offset / msb->page_size))) {
baf8532a 1070 memcpy(s_attr->data, buffer + addr % msb->page_size,
496fc1a6 1071 s_attr->size);
baf8532a
AD		 1072 continue;
1073 }
1074
496fc1a6
AD		 1075 attr_offset = (addr / msb->page_size) * msb->page_size;
1076
1077 if ((attr_offset + attr_len) < (addr + s_attr->size)) {
baf8532a 1078 kfree(buffer);
496fc1a6
AD		 1079 attr_len = (((addr + s_attr->size) / msb->page_size)
1080 + 1 ) * msb->page_size - attr_offset;
1081 buffer = kmalloc(attr_len, GFP_KERNEL);
baf8532a
AD		 1082 if (!buffer) {
1083 rc = -ENOMEM;
1084 goto out_free_attr;
1085 }
1086 }
1087
496fc1a6 1088 sg_init_one(&msb->req_sg[0], buffer, attr_len);
baf8532a
AD		 1089 msb->seg_count = 1;
1090 msb->current_seg = 0;
1091 msb->current_page = 0;
1092 msb->data_dir = READ;
1093 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1094
496fc1a6
AD		 1095 dev_dbg(&card->dev, "reading attribute range %x, %x\n",
1096 attr_offset, attr_len);
baf8532a 1097
496fc1a6 1098 msb->setup_transfer(card, attr_offset, attr_len);
baf8532a
AD		 1099 memstick_new_req(card->host);
1100 wait_for_completion(&card->mrq_complete);
1101 if (card->current_mrq.error) {
1102 rc = card->current_mrq.error;
1103 goto out_free_buffer;
1104 }
1105
496fc1a6
AD		 1106 memcpy(s_attr->data, buffer + addr % msb->page_size,
1107 s_attr->size);
baf8532a
AD		 1108 }
1109
1110 rc = 0;
1111out_free_buffer:
1112 kfree(buffer);
1113out_free_attr:
1114 kfree(attr);
1115 return rc;
1116}
1117
1118static int mspro_block_init_card(struct memstick_dev *card)
1119{
1120 struct mspro_block_data *msb = memstick_get_drvdata(card);
1121 struct memstick_host *host = card->host;
1122 int rc = 0;
1123
e1f19995 1124 msb->system = MEMSTICK_SYS_SERIAL;
496fc1a6
AD		 1125 msb->setup_transfer = h_mspro_block_setup_cmd;
1126
baf8532a
AD		 1127 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1128 card->reg_addr.r_length = sizeof(struct ms_status_register);
1129 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1130 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1131
1132 if (memstick_set_rw_addr(card))
1133 return -EIO;
1134
ead70773 1135 msb->caps = host->caps;
8e82f8c3
AD		 1136
1137 msleep(150);
1138 rc = mspro_block_wait_for_ced(card);
962ee1b1
AD		 1139 if (rc)
1140 return rc;
baf8532a 1141
8e82f8c3 1142 rc = mspro_block_switch_interface(card);
baf8532a
AD		 1143 if (rc)
1144 return rc;
8e82f8c3 1145
baf8532a 1146 dev_dbg(&card->dev, "card activated\n");
ead70773
AD		 1147 if (msb->system != MEMSTICK_SYS_SERIAL)
1148 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
baf8532a
AD		 1149
1150 card->next_request = h_mspro_block_req_init;
1151 msb->mrq_handler = h_mspro_block_get_ro;
1152 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1153 sizeof(struct ms_status_register));
1154 memstick_new_req(card->host);
1155 wait_for_completion(&card->mrq_complete);
1156 if (card->current_mrq.error)
1157 return card->current_mrq.error;
1158
1159 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1160
1161 msb->page_size = 512;
1162 rc = mspro_block_read_attributes(card);
1163 if (rc)
1164 return rc;
1165
1166 dev_dbg(&card->dev, "attributes loaded\n");
1167 return 0;
1168
1169}
1170
d0be1227
JA		 1171static const struct blk_mq_ops mspro_mq_ops = {
1172 .queue_rq = mspro_queue_rq,
1173};
1174
baf8532a
AD		 1175static int mspro_block_init_disk(struct memstick_dev *card)
1176{
1177 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1178 struct mspro_devinfo *dev_info = NULL;
1179 struct mspro_sys_info *sys_info = NULL;
1180 struct mspro_sys_attr *s_attr = NULL;
1181 int rc, disk_id;
baf8532a
AD		 1182 unsigned long capacity;
1183
baf8532a
AD		 1184 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1185 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1186
1187 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1188 dev_info = s_attr->data;
1189 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1190 sys_info = s_attr->data;
1191 }
1192
1193 if (!dev_info || !sys_info)
1194 return -ENODEV;
1195
1196 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1197 msb->heads = be16_to_cpu(dev_info->heads);
1198 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1199
1200 msb->page_size = be16_to_cpu(sys_info->unit_size);
1201
d8256d48 1202 mutex_lock(&mspro_block_disk_lock);
7b51f478 1203 disk_id = idr_alloc(&mspro_block_disk_idr, card, 0, 256, GFP_KERNEL);
baf8532a 1204 mutex_unlock(&mspro_block_disk_lock);
7b51f478
TH		 1205 if (disk_id < 0)
1206 return disk_id;
baf8532a 1207
8e82f8c3 1208 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
baf8532a
AD		 1209 if (!msb->disk) {
1210 rc = -ENOMEM;
1211 goto out_release_id;
1212 }
1213
d0be1227
JA		 1214 msb->queue = blk_mq_init_sq_queue(&msb->tag_set, &mspro_mq_ops, 2,
1215 BLK_MQ_F_SHOULD_MERGE);
1216 if (IS_ERR(msb->queue)) {
1217 rc = PTR_ERR(msb->queue);
1218 msb->queue = NULL;
baf8532a
AD		 1219 goto out_put_disk;
1220 }
1221
1222 msb->queue->queuedata = card;
1223
086fa5ff 1224 blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
8a78362c 1225 blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
baf8532a
AD		 1226 blk_queue_max_segment_size(msb->queue,
1227 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1228
1229 msb->disk->major = major;
8e82f8c3 1230 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
baf8532a
AD		 1231 msb->disk->fops = &ms_block_bdops;
1232 msb->usage_count = 1;
1233 msb->disk->private_data = msb;
1234 msb->disk->queue = msb->queue;
baf8532a
AD		 1235
1236 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1237
e1defc4f 1238 blk_queue_logical_block_size(msb->queue, msb->page_size);
baf8532a
AD		 1239
1240 capacity = be16_to_cpu(sys_info->user_block_count);
1241 capacity *= be16_to_cpu(sys_info->block_size);
1242 capacity *= msb->page_size >> 9;
1243 set_capacity(msb->disk, capacity);
1244 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
baf8532a 1245
fef912bf 1246 device_add_disk(&card->dev, msb->disk, NULL);
baf8532a
AD		 1247 msb->active = 1;
1248 return 0;
1249
1250out_put_disk:
1251 put_disk(msb->disk);
1252out_release_id:
1253 mutex_lock(&mspro_block_disk_lock);
1254 idr_remove(&mspro_block_disk_idr, disk_id);
1255 mutex_unlock(&mspro_block_disk_lock);
1256 return rc;
1257}
1258
1259static void mspro_block_data_clear(struct mspro_block_data *msb)
1260{
1261 int cnt;
1262 struct mspro_sys_attr *s_attr;
1263
1264 if (msb->attr_group.attrs) {
1265 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1266 s_attr = mspro_from_sysfs_attr(msb->attr_group
1267 .attrs[cnt]);
1268 kfree(s_attr->data);
1269 kfree(s_attr);
1270 }
1271 kfree(msb->attr_group.attrs);
1272 }
1273
1274 msb->card = NULL;
1275}
1276
1277static int mspro_block_check_card(struct memstick_dev *card)
1278{
1279 struct mspro_block_data *msb = memstick_get_drvdata(card);
1280
1281 return (msb->active == 1);
1282}
1283
1284static int mspro_block_probe(struct memstick_dev *card)
1285{
1286 struct mspro_block_data *msb;
1287 int rc = 0;
1288
1289 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1290 if (!msb)
1291 return -ENOMEM;
1292 memstick_set_drvdata(card, msb);
1293 msb->card = card;
f1d82698 1294 spin_lock_init(&msb->q_lock);
baf8532a
AD		 1295
1296 rc = mspro_block_init_card(card);
1297
1298 if (rc)
1299 goto out_free;
1300
1301 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1302 if (rc)
1303 goto out_free;
1304
1305 rc = mspro_block_init_disk(card);
1306 if (!rc) {
1307 card->check = mspro_block_check_card;
17017d8d
AD		 1308 card->stop = mspro_block_stop;
1309 card->start = mspro_block_start;
baf8532a
AD		 1310 return 0;
1311 }
1312
1313 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1314out_free:
1315 memstick_set_drvdata(card, NULL);
1316 mspro_block_data_clear(msb);
1317 kfree(msb);
1318 return rc;
1319}
1320
1321static void mspro_block_remove(struct memstick_dev *card)
1322{
1323 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1324 unsigned long flags;
1325
baf8532a 1326 spin_lock_irqsave(&msb->q_lock, flags);
f1d82698 1327 msb->eject = 1;
baf8532a 1328 spin_unlock_irqrestore(&msb->q_lock, flags);
d0be1227 1329 blk_mq_start_hw_queues(msb->queue);
baf8532a 1330
d862b13b
ML		 1331 del_gendisk(msb->disk);
1332 dev_dbg(&card->dev, "mspro block remove\n");
1333
baf8532a 1334 blk_cleanup_queue(msb->queue);
d0be1227 1335 blk_mq_free_tag_set(&msb->tag_set);
f1d82698 1336 msb->queue = NULL;
baf8532a
AD		 1337
1338 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1339
1340 mutex_lock(&mspro_block_disk_lock);
1341 mspro_block_data_clear(msb);
1342 mutex_unlock(&mspro_block_disk_lock);
1343
1344 mspro_block_disk_release(msb->disk);
1345 memstick_set_drvdata(card, NULL);
1346}
1347
1348#ifdef CONFIG_PM
1349
1350static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1351{
1352 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1353 unsigned long flags;
1354
d0be1227
JA		 1355 blk_mq_stop_hw_queues(msb->queue);
1356
baf8532a 1357 spin_lock_irqsave(&msb->q_lock, flags);
f1d82698 1358 msb->active = 0;
baf8532a
AD		 1359 spin_unlock_irqrestore(&msb->q_lock, flags);
1360
baf8532a
AD		 1361 return 0;
1362}
1363
1364static int mspro_block_resume(struct memstick_dev *card)
1365{
1366 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1367 int rc = 0;
1368
1369#ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1370
1371 struct mspro_block_data *new_msb;
1372 struct memstick_host *host = card->host;
1373 struct mspro_sys_attr *s_attr, *r_attr;
1374 unsigned char cnt;
1375
1376 mutex_lock(&host->lock);
1377 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1378 if (!new_msb) {
1379 rc = -ENOMEM;
1380 goto out_unlock;
1381 }
1382
1383 new_msb->card = card;
1384 memstick_set_drvdata(card, new_msb);
8c87dab9
JJB		 1385 rc = mspro_block_init_card(card);
1386 if (rc)
baf8532a
AD		 1387 goto out_free;
1388
1389 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1390 && msb->attr_group.attrs[cnt]; ++cnt) {
1391 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1392 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1393
1394 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1395 && r_attr->id == s_attr->id) {
1396 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1397 break;
1398
f1d82698 1399 msb->active = 1;
baf8532a
AD		 1400 break;
1401 }
1402 }
1403
1404out_free:
1405 memstick_set_drvdata(card, msb);
1406 mspro_block_data_clear(new_msb);
1407 kfree(new_msb);
1408out_unlock:
1409 mutex_unlock(&host->lock);
1410
1411#endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1412
d0be1227 1413 blk_mq_start_hw_queues(msb->queue);
baf8532a
AD		 1414 return rc;
1415}
1416
1417#else
1418
1419#define mspro_block_suspend NULL
1420#define mspro_block_resume NULL
1421
1422#endif /* CONFIG_PM */
1423
1424static struct memstick_device_id mspro_block_id_tbl[] = {
1425 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
8e82f8c3 1426 MEMSTICK_CLASS_DUO},
baf8532a
AD		 1427 {}
1428};
1429
1430
1431static struct memstick_driver mspro_block_driver = {
1432 .driver = {
1433 .name = DRIVER_NAME,
1434 .owner = THIS_MODULE
1435 },
1436 .id_table = mspro_block_id_tbl,
1437 .probe = mspro_block_probe,
1438 .remove = mspro_block_remove,
1439 .suspend = mspro_block_suspend,
1440 .resume = mspro_block_resume
1441};
1442
1443static int __init mspro_block_init(void)
1444{
1445 int rc = -ENOMEM;
1446
1447 rc = register_blkdev(major, DRIVER_NAME);
1448 if (rc < 0) {
1449 printk(KERN_ERR DRIVER_NAME ": failed to register "
1450 "major %d, error %d\n", major, rc);
1451 return rc;
1452 }
1453 if (!major)
1454 major = rc;
1455
1456 rc = memstick_register_driver(&mspro_block_driver);
1457 if (rc)
1458 unregister_blkdev(major, DRIVER_NAME);
1459 return rc;
1460}
1461
1462static void __exit mspro_block_exit(void)
1463{
1464 memstick_unregister_driver(&mspro_block_driver);
1465 unregister_blkdev(major, DRIVER_NAME);
1466 idr_destroy(&mspro_block_disk_idr);
1467}
1468
1469module_init(mspro_block_init);
1470module_exit(mspro_block_exit);
1471
1472MODULE_LICENSE("GPL");
1473MODULE_AUTHOR("Alex Dubov");
1474MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1475MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
Linux 6.x block layer and io_uring tree(s)