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block: pass a queue_limits argument to 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;
ead70773 136 unsigned int caps;
baf8532a
AD		 137 struct gendisk *disk;
138 struct request_queue *queue;
f1d82698 139 struct request *block_req;
d0be1227 140 struct blk_mq_tag_set tag_set;
baf8532a 141 spinlock_t q_lock;
baf8532a
AD		 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,
f1d82698 150 eject:1,
f1d82698
AD		 151 data_dir:1,
152 active:1;
baf8532a
AD		 153 unsigned char transfer_cmd;
154
155 int (*mrq_handler)(struct memstick_dev *card,
156 struct memstick_request **mrq);
157
496fc1a6
AD		 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
baf8532a
AD		 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;
f1d82698 170 unsigned int current_page;
baf8532a
AD		 171};
172
173static DEFINE_IDR(mspro_block_disk_idr);
174static DEFINE_MUTEX(mspro_block_disk_lock);
175
f1d82698
AD		 176static int mspro_block_complete_req(struct memstick_dev *card, int error);
177
baf8532a
AD		 178/*** Block device ***/
179
185ed423 180static void mspro_block_bd_free_disk(struct gendisk *disk)
baf8532a
AD		 181{
182 struct mspro_block_data *msb = disk->private_data;
f331c029 183 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
baf8532a
AD		 184
185 mutex_lock(&mspro_block_disk_lock);
185ed423 186 idr_remove(&mspro_block_disk_idr, disk_id);
baf8532a 187 mutex_unlock(&mspro_block_disk_lock);
baf8532a 188
185ed423 189 kfree(msb);
baf8532a
AD		 190}
191
192static int mspro_block_bd_getgeo(struct block_device *bdev,
193 struct hd_geometry *geo)
194{
195 struct mspro_block_data *msb = bdev->bd_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
83d5cde4 204static const struct block_device_operations ms_block_bdops = {
185ed423
CH		 205 .owner = THIS_MODULE,
206 .getgeo = mspro_block_bd_getgeo,
207 .free_disk = mspro_block_bd_free_disk,
baf8532a
AD		 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;
8c3c0aca 240 }
baf8532a
AD		 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
0c359970 263 rc += sysfs_emit_at(buffer, rc, "%02x ",
264 ((unsigned char *)s_attr->data)[cnt]);
baf8532a
AD		 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;
251cc9b9
AD		 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 }
baf8532a 292
0c359970 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);
baf8532a
AD		 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
0c359970 341 return sysfs_emit(buffer, "%s", (char *)s_attr->data);
baf8532a
AD		 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
0c359970 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);
baf8532a
AD		 365 return rc;
366}
367
efb2742e
AD		 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
0c359970 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);
efb2742e
AD		 397 return rc;
398}
399
baf8532a
AD		 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
0c359970 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));
baf8532a
AD		 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;
efb2742e
AD		 430 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
431 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
432 return mspro_block_attr_show_specfile;
baf8532a
AD		 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{
f1d82698
AD		 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;
baf8532a
AD		 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
f1d82698
AD		 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;
baf8532a
AD		 482 }
483
f1d82698 484 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 485}
486
487static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
488 struct memstick_request **mrq)
489{
baf8532a
AD		 490 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
491
f1d82698
AD		 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;
baf8532a
AD		 497 }
498
f1d82698 499 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 500}
501
502static int h_mspro_block_transfer_data(struct memstick_dev *card,
503 struct memstick_request **mrq)
504{
baf8532a
AD		 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
f1d82698
AD		 510 if ((*mrq)->error)
511 return mspro_block_complete_req(card, (*mrq)->error);
baf8532a
AD		 512
513 switch ((*mrq)->tpc) {
514 case MS_TPC_WRITE_REG:
515 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
ead70773 516 (*mrq)->need_card_int = 1;
baf8532a
AD		 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);
ead70773 521 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
baf8532a
AD		 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) {
f1d82698
AD		 542 return mspro_block_complete_req(card,
543 0);
baf8532a
AD		 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 nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
564 t_offset >> PAGE_SHIFT),
565 msb->page_size, offset_in_page(t_offset));
566
567 memstick_init_req_sg(*mrq, msb->data_dir == READ
568 ? MS_TPC_READ_LONG_DATA
569 : MS_TPC_WRITE_LONG_DATA,
570 &t_sg);
ead70773 571 (*mrq)->need_card_int = 1;
baf8532a
AD		 572 return 0;
573 case MS_TPC_READ_LONG_DATA:
574 case MS_TPC_WRITE_LONG_DATA:
575 msb->current_page++;
ead70773 576 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
baf8532a
AD		 577 t_val = (*mrq)->int_reg;
578 goto has_int_reg;
579 } else {
580 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
581 return 0;
582 }
583
584 default:
585 BUG();
586 }
587}
588
496fc1a6
AD		 589/*** Transfer setup functions for different access methods. ***/
590
591/** Setup data transfer request for SET_CMD TPC with arguments in card
592 * registers.
593 *
594 * @card Current media instance
595 * @offset Target data offset in bytes
596 * @length Required transfer length in bytes.
597 */
598static void h_mspro_block_setup_cmd(struct memstick_dev *card, u64 offset,
599 size_t length)
600{
601 struct mspro_block_data *msb = memstick_get_drvdata(card);
602 struct mspro_param_register param = {
603 .system = msb->system,
604 .data_count = cpu_to_be16((uint16_t)(length / msb->page_size)),
605 /* ISO C90 warning precludes direct initialization for now. */
606 .data_address = 0,
607 .tpc_param = 0
608 };
609
610 do_div(offset, msb->page_size);
611 param.data_address = cpu_to_be32((uint32_t)offset);
612
613 card->next_request = h_mspro_block_req_init;
614 msb->mrq_handler = h_mspro_block_transfer_data;
615 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
616 &param, sizeof(param));
617}
618
baf8532a
AD		 619/*** Data transfer ***/
620
61009f82 621static int mspro_block_issue_req(struct memstick_dev *card)
baf8532a
AD		 622{
623 struct mspro_block_data *msb = memstick_get_drvdata(card);
496fc1a6 624 u64 t_off;
f1d82698 625 unsigned int count;
baf8532a 626
61009f82 627 while (true) {
f1d82698 628 msb->current_page = 0;
baf8532a 629 msb->current_seg = 0;
f1d82698
AD		 630 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
631 msb->block_req,
632 msb->req_sg);
baf8532a 633
f1d82698 634 if (!msb->seg_count) {
d0be1227 635 unsigned int bytes = blk_rq_cur_bytes(msb->block_req);
61009f82 636 bool chunk;
d0be1227
JA		 637
638 chunk = blk_update_request(msb->block_req,
639 BLK_STS_RESOURCE,
640 bytes);
641 if (chunk)
642 continue;
643 __blk_mq_end_request(msb->block_req,
644 BLK_STS_RESOURCE);
645 msb->block_req = NULL;
61009f82 646 return -EAGAIN;
f1d82698 647 }
baf8532a 648
496fc1a6
AD		 649 t_off = blk_rq_pos(msb->block_req);
650 t_off <<= 9;
1011c1b9 651 count = blk_rq_bytes(msb->block_req);
baf8532a 652
496fc1a6 653 msb->setup_transfer(card, t_off, count);
f1d82698
AD		 654
655 msb->data_dir = rq_data_dir(msb->block_req);
656 msb->transfer_cmd = msb->data_dir == READ
657 ? MSPRO_CMD_READ_DATA
658 : MSPRO_CMD_WRITE_DATA;
659
f1d82698
AD		 660 memstick_new_req(card->host);
661 return 0;
662 }
baf8532a
AD		 663}
664
f1d82698 665static int mspro_block_complete_req(struct memstick_dev *card, int error)
baf8532a 666{
f1d82698 667 struct mspro_block_data *msb = memstick_get_drvdata(card);
d0be1227
JA		 668 int cnt;
669 bool chunk;
f1d82698 670 unsigned int t_len = 0;
baf8532a
AD		 671 unsigned long flags;
672
673 spin_lock_irqsave(&msb->q_lock, flags);
d0be1227 674 dev_dbg(&card->dev, "complete %d, %d\n", msb->block_req ? 1 : 0,
f1d82698
AD		 675 error);
676
d0be1227 677 if (msb->block_req) {
f1d82698
AD		 678 /* Nothing to do - not really an error */
679 if (error == -EAGAIN)
680 error = 0;
681
682 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
683 if (msb->data_dir == READ) {
13f6b191 684 for (cnt = 0; cnt < msb->current_seg; cnt++) {
f1d82698
AD		 685 t_len += msb->req_sg[cnt].length
686 / msb->page_size;
687
688 if (msb->current_page)
689 t_len += msb->current_page - 1;
690
691 t_len *= msb->page_size;
13f6b191 692 }
f1d82698
AD		 693 }
694 } else
1011c1b9 695 t_len = blk_rq_bytes(msb->block_req);
f1d82698
AD		 696
697 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
698
699 if (error && !t_len)
700 t_len = blk_rq_cur_bytes(msb->block_req);
701
d0be1227 702 chunk = blk_update_request(msb->block_req,
2a842aca 703 errno_to_blk_status(error), t_len);
d0be1227 704 if (chunk) {
61009f82 705 error = mspro_block_issue_req(card);
d0be1227
JA		 706 if (!error)
707 goto out;
708 } else {
709 __blk_mq_end_request(msb->block_req,
710 errno_to_blk_status(error));
711 msb->block_req = NULL;
712 }
f1d82698
AD		 713 } else {
714 if (!error)
715 error = -EAGAIN;
716 }
717
718 card->next_request = h_mspro_block_default_bad;
719 complete_all(&card->mrq_complete);
720out:
baf8532a 721 spin_unlock_irqrestore(&msb->q_lock, flags);
f1d82698 722 return error;
baf8532a
AD		 723}
724
17017d8d
AD		 725static void mspro_block_stop(struct memstick_dev *card)
726{
727 struct mspro_block_data *msb = memstick_get_drvdata(card);
728 int rc = 0;
729 unsigned long flags;
730
731 while (1) {
732 spin_lock_irqsave(&msb->q_lock, flags);
d0be1227
JA		 733 if (!msb->block_req) {
734 blk_mq_stop_hw_queues(msb->queue);
17017d8d
AD		 735 rc = 1;
736 }
737 spin_unlock_irqrestore(&msb->q_lock, flags);
738
739 if (rc)
740 break;
741
742 wait_for_completion(&card->mrq_complete);
743 }
744}
745
746static void mspro_block_start(struct memstick_dev *card)
747{
748 struct mspro_block_data *msb = memstick_get_drvdata(card);
17017d8d 749
d0be1227 750 blk_mq_start_hw_queues(msb->queue);
17017d8d
AD		 751}
752
d0be1227
JA		 753static blk_status_t mspro_queue_rq(struct blk_mq_hw_ctx *hctx,
754 const struct blk_mq_queue_data *bd)
baf8532a 755{
d0be1227 756 struct memstick_dev *card = hctx->queue->queuedata;
baf8532a 757 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a 758
d0be1227 759 spin_lock_irq(&msb->q_lock);
f1d82698 760
d0be1227
JA		 761 if (msb->block_req) {
762 spin_unlock_irq(&msb->q_lock);
763 return BLK_STS_DEV_RESOURCE;
764 }
f1d82698 765
d0be1227
JA		 766 if (msb->eject) {
767 spin_unlock_irq(&msb->q_lock);
768 blk_mq_start_request(bd->rq);
769 return BLK_STS_IOERR;
baf8532a 770 }
f1d82698 771
d0be1227
JA		 772 msb->block_req = bd->rq;
773 blk_mq_start_request(bd->rq);
774
61009f82 775 if (mspro_block_issue_req(card))
d0be1227
JA		 776 msb->block_req = NULL;
777
778 spin_unlock_irq(&msb->q_lock);
779 return BLK_STS_OK;
baf8532a
AD		 780}
781
782/*** Initialization ***/
783
784static int mspro_block_wait_for_ced(struct memstick_dev *card)
785{
786 struct mspro_block_data *msb = memstick_get_drvdata(card);
787
788 card->next_request = h_mspro_block_req_init;
789 msb->mrq_handler = h_mspro_block_wait_for_ced;
790 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
791 memstick_new_req(card->host);
792 wait_for_completion(&card->mrq_complete);
793 return card->current_mrq.error;
794}
795
962ee1b1
AD		 796static int mspro_block_set_interface(struct memstick_dev *card,
797 unsigned char sys_reg)
baf8532a
AD		 798{
799 struct memstick_host *host = card->host;
800 struct mspro_block_data *msb = memstick_get_drvdata(card);
801 struct mspro_param_register param = {
962ee1b1 802 .system = sys_reg,
baf8532a
AD		 803 .data_count = 0,
804 .data_address = 0,
e1f19995 805 .tpc_param = 0
baf8532a
AD		 806 };
807
808 card->next_request = h_mspro_block_req_init;
809 msb->mrq_handler = h_mspro_block_default;
810 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
811 sizeof(param));
812 memstick_new_req(host);
813 wait_for_completion(&card->mrq_complete);
962ee1b1
AD		 814 return card->current_mrq.error;
815}
816
817static int mspro_block_switch_interface(struct memstick_dev *card)
818{
819 struct memstick_host *host = card->host;
820 struct mspro_block_data *msb = memstick_get_drvdata(card);
821 int rc = 0;
822
8e82f8c3 823try_again:
962ee1b1
AD		 824 if (msb->caps & MEMSTICK_CAP_PAR4)
825 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
826 else
827 return 0;
828
829 if (rc) {
830 printk(KERN_WARNING
831 "%s: could not switch to 4-bit mode, error %d\n",
0252c3b4 832 dev_name(&card->dev), rc);
962ee1b1
AD		 833 return 0;
834 }
baf8532a 835
e1f19995
AD		 836 msb->system = MEMSTICK_SYS_PAR4;
837 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
962ee1b1 838 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
0252c3b4 839 dev_name(&card->dev));
962ee1b1
AD		 840
841 if (msb->caps & MEMSTICK_CAP_PAR8) {
842 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
843
844 if (!rc) {
845 msb->system = MEMSTICK_SYS_PAR8;
846 host->set_param(host, MEMSTICK_INTERFACE,
847 MEMSTICK_PAR8);
848 printk(KERN_INFO
849 "%s: switching to 8-bit parallel mode\n",
0252c3b4 850 dev_name(&card->dev));
962ee1b1
AD		 851 } else
852 printk(KERN_WARNING
853 "%s: could not switch to 8-bit mode, error %d\n",
0252c3b4 854 dev_name(&card->dev), rc);
962ee1b1 855 }
baf8532a
AD		 856
857 card->next_request = h_mspro_block_req_init;
858 msb->mrq_handler = h_mspro_block_default;
859 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
860 memstick_new_req(card->host);
861 wait_for_completion(&card->mrq_complete);
962ee1b1 862 rc = card->current_mrq.error;
baf8532a 863
962ee1b1
AD		 864 if (rc) {
865 printk(KERN_WARNING
866 "%s: interface error, trying to fall back to serial\n",
0252c3b4 867 dev_name(&card->dev));
59367258
AD		 868 msb->system = MEMSTICK_SYS_SERIAL;
869 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
962ee1b1 870 msleep(10);
59367258 871 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
baf8532a 872 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
59367258 873
962ee1b1
AD		 874 rc = memstick_set_rw_addr(card);
875 if (!rc)
876 rc = mspro_block_set_interface(card, msb->system);
8e82f8c3
AD		 877
878 if (!rc) {
879 msleep(150);
880 rc = mspro_block_wait_for_ced(card);
881 if (rc)
882 return rc;
883
884 if (msb->caps & MEMSTICK_CAP_PAR8) {
885 msb->caps &= ~MEMSTICK_CAP_PAR8;
886 goto try_again;
887 }
888 }
baf8532a 889 }
962ee1b1 890 return rc;
baf8532a
AD		 891}
892
893/* Memory allocated for attributes by this function should be freed by
25985edc 894 * mspro_block_data_clear, no matter if the initialization process succeeded
baf8532a
AD		 895 * or failed.
896 */
897static int mspro_block_read_attributes(struct memstick_dev *card)
898{
899 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 900 struct mspro_attribute *attr = NULL;
901 struct mspro_sys_attr *s_attr = NULL;
902 unsigned char *buffer = NULL;
903 int cnt, rc, attr_count;
496fc1a6
AD		 904 /* While normally physical device offsets, represented here by
905 * attr_offset and attr_len will be of large numeric types, we can be
906 * sure, that attributes are close enough to the beginning of the
907 * device, to save ourselves some trouble.
908 */
909 unsigned int addr, attr_offset = 0, attr_len = msb->page_size;
baf8532a
AD		 910
911 attr = kmalloc(msb->page_size, GFP_KERNEL);
912 if (!attr)
913 return -ENOMEM;
914
915 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
916 msb->seg_count = 1;
917 msb->current_seg = 0;
918 msb->current_page = 0;
919 msb->data_dir = READ;
920 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
921
496fc1a6
AD		 922 msb->setup_transfer(card, attr_offset, attr_len);
923
baf8532a
AD		 924 memstick_new_req(card->host);
925 wait_for_completion(&card->mrq_complete);
926 if (card->current_mrq.error) {
927 rc = card->current_mrq.error;
928 goto out_free_attr;
929 }
930
931 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
932 printk(KERN_ERR "%s: unrecognized device signature %x\n",
0252c3b4 933 dev_name(&card->dev), be16_to_cpu(attr->signature));
baf8532a
AD		 934 rc = -ENODEV;
935 goto out_free_attr;
936 }
937
938 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
939 printk(KERN_WARNING "%s: way too many attribute entries\n",
0252c3b4 940 dev_name(&card->dev));
baf8532a
AD		 941 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
942 } else
943 attr_count = attr->count;
944
be2d3f97
MN		 945 msb->attr_group.attrs = kcalloc(attr_count + 1,
946 sizeof(*msb->attr_group.attrs),
baf8532a
AD		 947 GFP_KERNEL);
948 if (!msb->attr_group.attrs) {
949 rc = -ENOMEM;
950 goto out_free_attr;
951 }
952 msb->attr_group.name = "media_attributes";
953
de6cdcb5 954 buffer = kmemdup(attr, attr_len, GFP_KERNEL);
baf8532a
AD		 955 if (!buffer) {
956 rc = -ENOMEM;
957 goto out_free_attr;
958 }
baf8532a
AD		 959
960 for (cnt = 0; cnt < attr_count; ++cnt) {
961 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
962 if (!s_attr) {
963 rc = -ENOMEM;
964 goto out_free_buffer;
965 }
966
967 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
968 addr = be32_to_cpu(attr->entries[cnt].address);
496fc1a6 969 s_attr->size = be32_to_cpu(attr->entries[cnt].size);
baf8532a 970 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
496fc1a6
AD		 971 "size %zx\n", cnt, attr->entries[cnt].id, addr,
972 s_attr->size);
baf8532a
AD		 973 s_attr->id = attr->entries[cnt].id;
974 if (mspro_block_attr_name(s_attr->id))
975 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
976 mspro_block_attr_name(attr->entries[cnt].id));
977 else
978 snprintf(s_attr->name, sizeof(s_attr->name),
979 "attr_x%02x", attr->entries[cnt].id);
980
21fd0495 981 sysfs_attr_init(&s_attr->dev_attr.attr);
baf8532a
AD		 982 s_attr->dev_attr.attr.name = s_attr->name;
983 s_attr->dev_attr.attr.mode = S_IRUGO;
baf8532a
AD		 984 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
985
496fc1a6 986 if (!s_attr->size)
baf8532a
AD		 987 continue;
988
496fc1a6 989 s_attr->data = kmalloc(s_attr->size, GFP_KERNEL);
baf8532a
AD		 990 if (!s_attr->data) {
991 rc = -ENOMEM;
992 goto out_free_buffer;
993 }
994
496fc1a6
AD		 995 if (((addr / msb->page_size) == (attr_offset / msb->page_size))
996 && (((addr + s_attr->size - 1) / msb->page_size)
997 == (attr_offset / msb->page_size))) {
baf8532a 998 memcpy(s_attr->data, buffer + addr % msb->page_size,
496fc1a6 999 s_attr->size);
baf8532a
AD		 1000 continue;
1001 }
1002
496fc1a6
AD		 1003 attr_offset = (addr / msb->page_size) * msb->page_size;
1004
1005 if ((attr_offset + attr_len) < (addr + s_attr->size)) {
baf8532a 1006 kfree(buffer);
496fc1a6
AD		 1007 attr_len = (((addr + s_attr->size) / msb->page_size)
1008 + 1 ) * msb->page_size - attr_offset;
1009 buffer = kmalloc(attr_len, GFP_KERNEL);
baf8532a
AD		 1010 if (!buffer) {
1011 rc = -ENOMEM;
1012 goto out_free_attr;
1013 }
1014 }
1015
496fc1a6 1016 sg_init_one(&msb->req_sg[0], buffer, attr_len);
baf8532a
AD		 1017 msb->seg_count = 1;
1018 msb->current_seg = 0;
1019 msb->current_page = 0;
1020 msb->data_dir = READ;
1021 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1022
496fc1a6
AD		 1023 dev_dbg(&card->dev, "reading attribute range %x, %x\n",
1024 attr_offset, attr_len);
baf8532a 1025
496fc1a6 1026 msb->setup_transfer(card, attr_offset, attr_len);
baf8532a
AD		 1027 memstick_new_req(card->host);
1028 wait_for_completion(&card->mrq_complete);
1029 if (card->current_mrq.error) {
1030 rc = card->current_mrq.error;
1031 goto out_free_buffer;
1032 }
1033
496fc1a6
AD		 1034 memcpy(s_attr->data, buffer + addr % msb->page_size,
1035 s_attr->size);
baf8532a
AD		 1036 }
1037
1038 rc = 0;
1039out_free_buffer:
1040 kfree(buffer);
1041out_free_attr:
1042 kfree(attr);
1043 return rc;
1044}
1045
1046static int mspro_block_init_card(struct memstick_dev *card)
1047{
1048 struct mspro_block_data *msb = memstick_get_drvdata(card);
1049 struct memstick_host *host = card->host;
1050 int rc = 0;
1051
e1f19995 1052 msb->system = MEMSTICK_SYS_SERIAL;
496fc1a6
AD		 1053 msb->setup_transfer = h_mspro_block_setup_cmd;
1054
baf8532a
AD		 1055 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1056 card->reg_addr.r_length = sizeof(struct ms_status_register);
1057 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1058 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1059
1060 if (memstick_set_rw_addr(card))
1061 return -EIO;
1062
ead70773 1063 msb->caps = host->caps;
8e82f8c3
AD		 1064
1065 msleep(150);
1066 rc = mspro_block_wait_for_ced(card);
962ee1b1
AD		 1067 if (rc)
1068 return rc;
baf8532a 1069
8e82f8c3 1070 rc = mspro_block_switch_interface(card);
baf8532a
AD		 1071 if (rc)
1072 return rc;
8e82f8c3 1073
baf8532a 1074 dev_dbg(&card->dev, "card activated\n");
ead70773
AD		 1075 if (msb->system != MEMSTICK_SYS_SERIAL)
1076 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
baf8532a
AD		 1077
1078 card->next_request = h_mspro_block_req_init;
1079 msb->mrq_handler = h_mspro_block_get_ro;
1080 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1081 sizeof(struct ms_status_register));
1082 memstick_new_req(card->host);
1083 wait_for_completion(&card->mrq_complete);
1084 if (card->current_mrq.error)
1085 return card->current_mrq.error;
1086
1087 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1088
1089 msb->page_size = 512;
1090 rc = mspro_block_read_attributes(card);
1091 if (rc)
1092 return rc;
1093
1094 dev_dbg(&card->dev, "attributes loaded\n");
1095 return 0;
1096
1097}
1098
d0be1227
JA		 1099static const struct blk_mq_ops mspro_mq_ops = {
1100 .queue_rq = mspro_queue_rq,
1101};
1102
baf8532a
AD		 1103static int mspro_block_init_disk(struct memstick_dev *card)
1104{
1105 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1106 struct mspro_devinfo *dev_info = NULL;
1107 struct mspro_sys_info *sys_info = NULL;
1108 struct mspro_sys_attr *s_attr = NULL;
1109 int rc, disk_id;
baf8532a
AD		 1110 unsigned long capacity;
1111
baf8532a
AD		 1112 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1113 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1114
1115 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1116 dev_info = s_attr->data;
1117 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1118 sys_info = s_attr->data;
1119 }
1120
1121 if (!dev_info || !sys_info)
1122 return -ENODEV;
1123
1124 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1125 msb->heads = be16_to_cpu(dev_info->heads);
1126 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1127
1128 msb->page_size = be16_to_cpu(sys_info->unit_size);
1129
d8256d48 1130 mutex_lock(&mspro_block_disk_lock);
7b51f478 1131 disk_id = idr_alloc(&mspro_block_disk_idr, card, 0, 256, GFP_KERNEL);
baf8532a 1132 mutex_unlock(&mspro_block_disk_lock);
7b51f478
TH		 1133 if (disk_id < 0)
1134 return disk_id;
baf8532a 1135
51ed5bd5
CH		 1136 rc = blk_mq_alloc_sq_tag_set(&msb->tag_set, &mspro_mq_ops, 2,
1137 BLK_MQ_F_SHOULD_MERGE);
1138 if (rc)
baf8532a 1139 goto out_release_id;
baf8532a 1140
27e32cd2 1141 msb->disk = blk_mq_alloc_disk(&msb->tag_set, NULL, card);
51ed5bd5
CH		 1142 if (IS_ERR(msb->disk)) {
1143 rc = PTR_ERR(msb->disk);
1144 goto out_free_tag_set;
baf8532a 1145 }
51ed5bd5 1146 msb->queue = msb->disk->queue;
baf8532a 1147
086fa5ff 1148 blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
8a78362c 1149 blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
baf8532a
AD		 1150 blk_queue_max_segment_size(msb->queue,
1151 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1152
1153 msb->disk->major = major;
8e82f8c3 1154 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
51ed5bd5 1155 msb->disk->minors = 1 << MSPRO_BLOCK_PART_SHIFT;
baf8532a 1156 msb->disk->fops = &ms_block_bdops;
baf8532a 1157 msb->disk->private_data = msb;
baf8532a
AD		 1158
1159 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1160
e1defc4f 1161 blk_queue_logical_block_size(msb->queue, msb->page_size);
baf8532a
AD		 1162
1163 capacity = be16_to_cpu(sys_info->user_block_count);
1164 capacity *= be16_to_cpu(sys_info->block_size);
1165 capacity *= msb->page_size >> 9;
1166 set_capacity(msb->disk, capacity);
1167 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
baf8532a 1168
6dab421b
CH		 1169 if (msb->read_only)
1170 set_disk_ro(msb->disk, true);
1171
b3f8eb6e
LC		 1172 rc = device_add_disk(&card->dev, msb->disk, NULL);
1173 if (rc)
1174 goto out_cleanup_disk;
baf8532a
AD		 1175 msb->active = 1;
1176 return 0;
1177
b3f8eb6e 1178out_cleanup_disk:
8b9ab626 1179 put_disk(msb->disk);
51ed5bd5
CH		 1180out_free_tag_set:
1181 blk_mq_free_tag_set(&msb->tag_set);
baf8532a
AD		 1182out_release_id:
1183 mutex_lock(&mspro_block_disk_lock);
1184 idr_remove(&mspro_block_disk_idr, disk_id);
1185 mutex_unlock(&mspro_block_disk_lock);
1186 return rc;
1187}
1188
1189static void mspro_block_data_clear(struct mspro_block_data *msb)
1190{
1191 int cnt;
1192 struct mspro_sys_attr *s_attr;
1193
1194 if (msb->attr_group.attrs) {
1195 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1196 s_attr = mspro_from_sysfs_attr(msb->attr_group
1197 .attrs[cnt]);
1198 kfree(s_attr->data);
1199 kfree(s_attr);
1200 }
1201 kfree(msb->attr_group.attrs);
1202 }
1203
1204 msb->card = NULL;
1205}
1206
1207static int mspro_block_check_card(struct memstick_dev *card)
1208{
1209 struct mspro_block_data *msb = memstick_get_drvdata(card);
1210
1211 return (msb->active == 1);
1212}
1213
1214static int mspro_block_probe(struct memstick_dev *card)
1215{
1216 struct mspro_block_data *msb;
1217 int rc = 0;
1218
1219 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1220 if (!msb)
1221 return -ENOMEM;
1222 memstick_set_drvdata(card, msb);
1223 msb->card = card;
f1d82698 1224 spin_lock_init(&msb->q_lock);
baf8532a
AD		 1225
1226 rc = mspro_block_init_card(card);
1227
1228 if (rc)
1229 goto out_free;
1230
1231 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1232 if (rc)
1233 goto out_free;
1234
1235 rc = mspro_block_init_disk(card);
1236 if (!rc) {
1237 card->check = mspro_block_check_card;
17017d8d
AD		 1238 card->stop = mspro_block_stop;
1239 card->start = mspro_block_start;
baf8532a
AD		 1240 return 0;
1241 }
1242
1243 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1244out_free:
1245 memstick_set_drvdata(card, NULL);
1246 mspro_block_data_clear(msb);
1247 kfree(msb);
1248 return rc;
1249}
1250
1251static void mspro_block_remove(struct memstick_dev *card)
1252{
1253 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1254 unsigned long flags;
1255
baf8532a 1256 spin_lock_irqsave(&msb->q_lock, flags);
f1d82698 1257 msb->eject = 1;
baf8532a 1258 spin_unlock_irqrestore(&msb->q_lock, flags);
d0be1227 1259 blk_mq_start_hw_queues(msb->queue);
baf8532a 1260
d862b13b
ML		 1261 del_gendisk(msb->disk);
1262 dev_dbg(&card->dev, "mspro block remove\n");
1263
d0be1227 1264 blk_mq_free_tag_set(&msb->tag_set);
f1d82698 1265 msb->queue = NULL;
baf8532a
AD		 1266
1267 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1268
1269 mutex_lock(&mspro_block_disk_lock);
1270 mspro_block_data_clear(msb);
1271 mutex_unlock(&mspro_block_disk_lock);
1272
185ed423 1273 put_disk(msb->disk);
baf8532a
AD		 1274 memstick_set_drvdata(card, NULL);
1275}
1276
1277#ifdef CONFIG_PM
1278
1279static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1280{
1281 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1282 unsigned long flags;
1283
d0be1227
JA		 1284 blk_mq_stop_hw_queues(msb->queue);
1285
baf8532a 1286 spin_lock_irqsave(&msb->q_lock, flags);
f1d82698 1287 msb->active = 0;
baf8532a
AD		 1288 spin_unlock_irqrestore(&msb->q_lock, flags);
1289
baf8532a
AD		 1290 return 0;
1291}
1292
1293static int mspro_block_resume(struct memstick_dev *card)
1294{
1295 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a
AD		 1296 int rc = 0;
1297
1298#ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1299
1300 struct mspro_block_data *new_msb;
1301 struct memstick_host *host = card->host;
1302 struct mspro_sys_attr *s_attr, *r_attr;
1303 unsigned char cnt;
1304
1305 mutex_lock(&host->lock);
1306 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1307 if (!new_msb) {
1308 rc = -ENOMEM;
1309 goto out_unlock;
1310 }
1311
1312 new_msb->card = card;
1313 memstick_set_drvdata(card, new_msb);
8c87dab9
JJB		 1314 rc = mspro_block_init_card(card);
1315 if (rc)
baf8532a
AD		 1316 goto out_free;
1317
1318 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1319 && msb->attr_group.attrs[cnt]; ++cnt) {
1320 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1321 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1322
1323 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1324 && r_attr->id == s_attr->id) {
1325 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1326 break;
1327
f1d82698 1328 msb->active = 1;
baf8532a
AD		 1329 break;
1330 }
1331 }
1332
1333out_free:
1334 memstick_set_drvdata(card, msb);
1335 mspro_block_data_clear(new_msb);
1336 kfree(new_msb);
1337out_unlock:
1338 mutex_unlock(&host->lock);
1339
1340#endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1341
d0be1227 1342 blk_mq_start_hw_queues(msb->queue);
baf8532a
AD		 1343 return rc;
1344}
1345
1346#else
1347
1348#define mspro_block_suspend NULL
1349#define mspro_block_resume NULL
1350
1351#endif /* CONFIG_PM */
1352
1353static struct memstick_device_id mspro_block_id_tbl[] = {
1354 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
8e82f8c3 1355 MEMSTICK_CLASS_DUO},
baf8532a
AD		 1356 {}
1357};
1358
1359
1360static struct memstick_driver mspro_block_driver = {
1361 .driver = {
1362 .name = DRIVER_NAME,
1363 .owner = THIS_MODULE
1364 },
1365 .id_table = mspro_block_id_tbl,
1366 .probe = mspro_block_probe,
1367 .remove = mspro_block_remove,
1368 .suspend = mspro_block_suspend,
1369 .resume = mspro_block_resume
1370};
1371
1372static int __init mspro_block_init(void)
1373{
1374 int rc = -ENOMEM;
1375
1376 rc = register_blkdev(major, DRIVER_NAME);
1377 if (rc < 0) {
1378 printk(KERN_ERR DRIVER_NAME ": failed to register "
1379 "major %d, error %d\n", major, rc);
1380 return rc;
1381 }
1382 if (!major)
1383 major = rc;
1384
1385 rc = memstick_register_driver(&mspro_block_driver);
1386 if (rc)
1387 unregister_blkdev(major, DRIVER_NAME);
1388 return rc;
1389}
1390
1391static void __exit mspro_block_exit(void)
1392{
1393 memstick_unregister_driver(&mspro_block_driver);
1394 unregister_blkdev(major, DRIVER_NAME);
1395 idr_destroy(&mspro_block_disk_idr);
1396}
1397
1398module_init(mspro_block_init);
1399module_exit(mspro_block_exit);
1400
1401MODULE_LICENSE("GPL");
1402MODULE_AUTHOR("Alex Dubov");
1403MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1404MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
Linux 6.x block layer and io_uring tree(s)