1 /*
2 * Sony MemoryStick Pro storage support
3 *
4 * Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * Special thanks to Carlos Corbacho for providing various MemoryStick cards
11 * that made this driver possible.
12 *
13 */
14
15 #include <linux/blkdev.h>
16 #include <linux/idr.h>
17 #include <linux/hdreg.h>
18 #include <linux/kthread.h>
19 #include <linux/delay.h>
20 #include <linux/memstick.h>
21
22 #define DRIVER_NAME "mspro_block"
23
24 static int major;
25 module_param(major, int, 0644);
26
27 #define MSPRO_BLOCK_MAX_SEGS 32
28 #define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
29
30 #define MSPRO_BLOCK_SIGNATURE 0xa5c3
31 #define MSPRO_BLOCK_MAX_ATTRIBUTES 41
32
33 #define MSPRO_BLOCK_PART_SHIFT 3
34
35 enum {
36 MSPRO_BLOCK_ID_SYSINFO = 0x10,
37 MSPRO_BLOCK_ID_MODELNAME = 0x15,
38 MSPRO_BLOCK_ID_MBR = 0x20,
39 MSPRO_BLOCK_ID_PBR16 = 0x21,
40 MSPRO_BLOCK_ID_PBR32 = 0x22,
41 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
42 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
43 MSPRO_BLOCK_ID_DEVINFO = 0x30
44 };
45
46 struct mspro_sys_attr {
47 size_t size;
48 void *data;
49 unsigned char id;
50 char name[32];
51 struct device_attribute dev_attr;
52 };
53
54 struct mspro_attr_entry {
55 __be32 address;
56 __be32 size;
57 unsigned char id;
58 unsigned char reserved[3];
59 } __attribute__((packed));
60
61 struct mspro_attribute {
62 __be16 signature;
63 unsigned short version;
64 unsigned char count;
65 unsigned char reserved[11];
66 struct mspro_attr_entry entries[];
67 } __attribute__((packed));
68
69 struct mspro_sys_info {
70 unsigned char class;
71 unsigned char reserved0;
72 __be16 block_size;
73 __be16 block_count;
74 __be16 user_block_count;
75 __be16 page_size;
76 unsigned char reserved1[2];
77 unsigned char assembly_date[8];
78 __be32 serial_number;
79 unsigned char assembly_maker_code;
80 unsigned char assembly_model_code[3];
81 __be16 memory_maker_code;
82 __be16 memory_model_code;
83 unsigned char reserved2[4];
84 unsigned char vcc;
85 unsigned char vpp;
86 __be16 controller_number;
87 __be16 controller_function;
88 __be16 start_sector;
89 __be16 unit_size;
90 unsigned char ms_sub_class;
91 unsigned char reserved3[4];
92 unsigned char interface_type;
93 __be16 controller_code;
94 unsigned char format_type;
95 unsigned char reserved4;
96 unsigned char device_type;
97 unsigned char reserved5[7];
98 unsigned char mspro_id[16];
99 unsigned char reserved6[16];
100 } __attribute__((packed));
101
102 struct mspro_mbr {
103 unsigned char boot_partition;
104 unsigned char start_head;
105 unsigned char start_sector;
106 unsigned char start_cylinder;
107 unsigned char partition_type;
108 unsigned char end_head;
109 unsigned char end_sector;
110 unsigned char end_cylinder;
111 unsigned int start_sectors;
112 unsigned int sectors_per_partition;
113 } __attribute__((packed));
114
115 struct mspro_specfile {
116 char name[8];
117 char ext[3];
118 unsigned char attr;
119 unsigned char reserved[10];
120 unsigned short time;
121 unsigned short date;
122 unsigned short cluster;
123 unsigned int size;
124 } __attribute__((packed));
125
126 struct mspro_devinfo {
127 __be16 cylinders;
128 __be16 heads;
129 __be16 bytes_per_track;
130 __be16 bytes_per_sector;
131 __be16 sectors_per_track;
132 unsigned char reserved[6];
133 } __attribute__((packed));
134
135 struct mspro_block_data {
136 struct memstick_dev *card;
137 unsigned int usage_count;
138 unsigned int caps;
139 struct gendisk *disk;
140 struct request_queue *queue;
141 struct request *block_req;
142 spinlock_t q_lock;
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,
151 eject:1,
152 has_request:1,
153 data_dir:1,
154 active:1;
155 unsigned char transfer_cmd;
156
157 int (*mrq_handler)(struct memstick_dev *card,
158 struct memstick_request **mrq);
159
160 struct attribute_group attr_group;
161
162 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
163 unsigned int seg_count;
164 unsigned int current_seg;
165 unsigned int current_page;
166 };
167
168 static DEFINE_IDR(mspro_block_disk_idr);
169 static DEFINE_MUTEX(mspro_block_disk_lock);
170
171 static int mspro_block_complete_req(struct memstick_dev *card, int error);
172
173 /*** Block device ***/
174
mspro_block_bd_open(struct block_device * bdev,fmode_t mode)175 static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
176 {
177 struct gendisk *disk = bdev->bd_disk;
178 struct mspro_block_data *msb = disk->private_data;
179 int rc = -ENXIO;
180
181 mutex_lock(&mspro_block_disk_lock);
182
183 if (msb && msb->card) {
184 msb->usage_count++;
185 if ((mode & FMODE_WRITE) && msb->read_only)
186 rc = -EROFS;
187 else
188 rc = 0;
189 }
190
191 mutex_unlock(&mspro_block_disk_lock);
192
193 return rc;
194 }
195
196
mspro_block_disk_release(struct gendisk * disk)197 static int mspro_block_disk_release(struct gendisk *disk)
198 {
199 struct mspro_block_data *msb = disk->private_data;
200 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
201
202 mutex_lock(&mspro_block_disk_lock);
203
204 if (msb) {
205 if (msb->usage_count)
206 msb->usage_count--;
207
208 if (!msb->usage_count) {
209 kfree(msb);
210 disk->private_data = NULL;
211 idr_remove(&mspro_block_disk_idr, disk_id);
212 put_disk(disk);
213 }
214 }
215
216 mutex_unlock(&mspro_block_disk_lock);
217
218 return 0;
219 }
220
mspro_block_bd_release(struct gendisk * disk,fmode_t mode)221 static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
222 {
223 return mspro_block_disk_release(disk);
224 }
225
mspro_block_bd_getgeo(struct block_device * bdev,struct hd_geometry * geo)226 static int mspro_block_bd_getgeo(struct block_device *bdev,
227 struct hd_geometry *geo)
228 {
229 struct mspro_block_data *msb = bdev->bd_disk->private_data;
230
231 geo->heads = msb->heads;
232 geo->sectors = msb->sectors_per_track;
233 geo->cylinders = msb->cylinders;
234
235 return 0;
236 }
237
238 static struct block_device_operations ms_block_bdops = {
239 .open = mspro_block_bd_open,
240 .release = mspro_block_bd_release,
241 .getgeo = mspro_block_bd_getgeo,
242 .owner = THIS_MODULE
243 };
244
245 /*** Information ***/
246
mspro_from_sysfs_attr(struct attribute * attr)247 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
248 {
249 struct device_attribute *dev_attr
250 = container_of(attr, struct device_attribute, attr);
251 return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
252 }
253
mspro_block_attr_name(unsigned char tag)254 static const char *mspro_block_attr_name(unsigned char tag)
255 {
256 switch (tag) {
257 case MSPRO_BLOCK_ID_SYSINFO:
258 return "attr_sysinfo";
259 case MSPRO_BLOCK_ID_MODELNAME:
260 return "attr_modelname";
261 case MSPRO_BLOCK_ID_MBR:
262 return "attr_mbr";
263 case MSPRO_BLOCK_ID_PBR16:
264 return "attr_pbr16";
265 case MSPRO_BLOCK_ID_PBR32:
266 return "attr_pbr32";
267 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
268 return "attr_specfilevalues1";
269 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
270 return "attr_specfilevalues2";
271 case MSPRO_BLOCK_ID_DEVINFO:
272 return "attr_devinfo";
273 default:
274 return NULL;
275 };
276 }
277
278 typedef ssize_t (*sysfs_show_t)(struct device *dev,
279 struct device_attribute *attr,
280 char *buffer);
281
mspro_block_attr_show_default(struct device * dev,struct device_attribute * attr,char * buffer)282 static ssize_t mspro_block_attr_show_default(struct device *dev,
283 struct device_attribute *attr,
284 char *buffer)
285 {
286 struct mspro_sys_attr *s_attr = container_of(attr,
287 struct mspro_sys_attr,
288 dev_attr);
289
290 ssize_t cnt, rc = 0;
291
292 for (cnt = 0; cnt < s_attr->size; cnt++) {
293 if (cnt && !(cnt % 16)) {
294 if (PAGE_SIZE - rc)
295 buffer[rc++] = '\n';
296 }
297
298 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
299 ((unsigned char *)s_attr->data)[cnt]);
300 }
301 return rc;
302 }
303
mspro_block_attr_show_sysinfo(struct device * dev,struct device_attribute * attr,char * buffer)304 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
305 struct device_attribute *attr,
306 char *buffer)
307 {
308 struct mspro_sys_attr *x_attr = container_of(attr,
309 struct mspro_sys_attr,
310 dev_attr);
311 struct mspro_sys_info *x_sys = x_attr->data;
312 ssize_t rc = 0;
313 int date_tz = 0, date_tz_f = 0;
314
315 if (x_sys->assembly_date[0] > 0x80U) {
316 date_tz = (~x_sys->assembly_date[0]) + 1;
317 date_tz_f = date_tz & 3;
318 date_tz >>= 2;
319 date_tz = -date_tz;
320 date_tz_f *= 15;
321 } else if (x_sys->assembly_date[0] < 0x80U) {
322 date_tz = x_sys->assembly_date[0];
323 date_tz_f = date_tz & 3;
324 date_tz >>= 2;
325 date_tz_f *= 15;
326 }
327
328 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
329 x_sys->class);
330 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
331 be16_to_cpu(x_sys->block_size));
332 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
333 be16_to_cpu(x_sys->block_count));
334 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
335 be16_to_cpu(x_sys->user_block_count));
336 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
337 be16_to_cpu(x_sys->page_size));
338 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
339 "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
340 date_tz, date_tz_f,
341 be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
342 x_sys->assembly_date[3], x_sys->assembly_date[4],
343 x_sys->assembly_date[5], x_sys->assembly_date[6],
344 x_sys->assembly_date[7]);
345 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
346 be32_to_cpu(x_sys->serial_number));
347 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
348 "assembly maker code: %x\n",
349 x_sys->assembly_maker_code);
350 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
351 "%02x%02x%02x\n", x_sys->assembly_model_code[0],
352 x_sys->assembly_model_code[1],
353 x_sys->assembly_model_code[2]);
354 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
355 be16_to_cpu(x_sys->memory_maker_code));
356 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
357 be16_to_cpu(x_sys->memory_model_code));
358 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
359 x_sys->vcc);
360 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
361 x_sys->vpp);
362 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
363 be16_to_cpu(x_sys->controller_number));
364 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
365 "controller function: %x\n",
366 be16_to_cpu(x_sys->controller_function));
367 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
368 be16_to_cpu(x_sys->start_sector));
369 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
370 be16_to_cpu(x_sys->unit_size));
371 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
372 x_sys->ms_sub_class);
373 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
374 x_sys->interface_type);
375 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
376 be16_to_cpu(x_sys->controller_code));
377 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
378 x_sys->format_type);
379 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
380 x_sys->device_type);
381 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
382 x_sys->mspro_id);
383 return rc;
384 }
385
mspro_block_attr_show_modelname(struct device * dev,struct device_attribute * attr,char * buffer)386 static ssize_t mspro_block_attr_show_modelname(struct device *dev,
387 struct device_attribute *attr,
388 char *buffer)
389 {
390 struct mspro_sys_attr *s_attr = container_of(attr,
391 struct mspro_sys_attr,
392 dev_attr);
393
394 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
395 }
396
mspro_block_attr_show_mbr(struct device * dev,struct device_attribute * attr,char * buffer)397 static ssize_t mspro_block_attr_show_mbr(struct device *dev,
398 struct device_attribute *attr,
399 char *buffer)
400 {
401 struct mspro_sys_attr *x_attr = container_of(attr,
402 struct mspro_sys_attr,
403 dev_attr);
404 struct mspro_mbr *x_mbr = x_attr->data;
405 ssize_t rc = 0;
406
407 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
408 x_mbr->boot_partition);
409 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
410 x_mbr->start_head);
411 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
412 x_mbr->start_sector);
413 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
414 x_mbr->start_cylinder);
415 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
416 x_mbr->partition_type);
417 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
418 x_mbr->end_head);
419 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
420 x_mbr->end_sector);
421 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
422 x_mbr->end_cylinder);
423 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
424 x_mbr->start_sectors);
425 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
426 "sectors per partition: %x\n",
427 x_mbr->sectors_per_partition);
428 return rc;
429 }
430
mspro_block_attr_show_specfile(struct device * dev,struct device_attribute * attr,char * buffer)431 static ssize_t mspro_block_attr_show_specfile(struct device *dev,
432 struct device_attribute *attr,
433 char *buffer)
434 {
435 struct mspro_sys_attr *x_attr = container_of(attr,
436 struct mspro_sys_attr,
437 dev_attr);
438 struct mspro_specfile *x_spfile = x_attr->data;
439 char name[9], ext[4];
440 ssize_t rc = 0;
441
442 memcpy(name, x_spfile->name, 8);
443 name[8] = 0;
444 memcpy(ext, x_spfile->ext, 3);
445 ext[3] = 0;
446
447 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
448 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
449 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
450 x_spfile->attr);
451 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
452 x_spfile->time >> 11,
453 (x_spfile->time >> 5) & 0x3f,
454 (x_spfile->time & 0x1f) * 2);
455 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
456 (x_spfile->date >> 9) + 1980,
457 (x_spfile->date >> 5) & 0xf,
458 x_spfile->date & 0x1f);
459 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
460 x_spfile->cluster);
461 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
462 x_spfile->size);
463 return rc;
464 }
465
mspro_block_attr_show_devinfo(struct device * dev,struct device_attribute * attr,char * buffer)466 static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
467 struct device_attribute *attr,
468 char *buffer)
469 {
470 struct mspro_sys_attr *x_attr = container_of(attr,
471 struct mspro_sys_attr,
472 dev_attr);
473 struct mspro_devinfo *x_devinfo = x_attr->data;
474 ssize_t rc = 0;
475
476 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
477 be16_to_cpu(x_devinfo->cylinders));
478 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
479 be16_to_cpu(x_devinfo->heads));
480 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
481 be16_to_cpu(x_devinfo->bytes_per_track));
482 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
483 be16_to_cpu(x_devinfo->bytes_per_sector));
484 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
485 be16_to_cpu(x_devinfo->sectors_per_track));
486 return rc;
487 }
488
mspro_block_attr_show(unsigned char tag)489 static sysfs_show_t mspro_block_attr_show(unsigned char tag)
490 {
491 switch (tag) {
492 case MSPRO_BLOCK_ID_SYSINFO:
493 return mspro_block_attr_show_sysinfo;
494 case MSPRO_BLOCK_ID_MODELNAME:
495 return mspro_block_attr_show_modelname;
496 case MSPRO_BLOCK_ID_MBR:
497 return mspro_block_attr_show_mbr;
498 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
499 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
500 return mspro_block_attr_show_specfile;
501 case MSPRO_BLOCK_ID_DEVINFO:
502 return mspro_block_attr_show_devinfo;
503 default:
504 return mspro_block_attr_show_default;
505 }
506 }
507
508 /*** Protocol handlers ***/
509
510 /*
511 * Functions prefixed with "h_" are protocol callbacks. They can be called from
512 * interrupt context. Return value of 0 means that request processing is still
513 * ongoing, while special error value of -EAGAIN means that current request is
514 * finished (and request processor should come back some time later).
515 */
516
h_mspro_block_req_init(struct memstick_dev * card,struct memstick_request ** mrq)517 static int h_mspro_block_req_init(struct memstick_dev *card,
518 struct memstick_request **mrq)
519 {
520 struct mspro_block_data *msb = memstick_get_drvdata(card);
521
522 *mrq = &card->current_mrq;
523 card->next_request = msb->mrq_handler;
524 return 0;
525 }
526
h_mspro_block_default(struct memstick_dev * card,struct memstick_request ** mrq)527 static int h_mspro_block_default(struct memstick_dev *card,
528 struct memstick_request **mrq)
529 {
530 return mspro_block_complete_req(card, (*mrq)->error);
531 }
532
h_mspro_block_default_bad(struct memstick_dev * card,struct memstick_request ** mrq)533 static int h_mspro_block_default_bad(struct memstick_dev *card,
534 struct memstick_request **mrq)
535 {
536 return -ENXIO;
537 }
538
h_mspro_block_get_ro(struct memstick_dev * card,struct memstick_request ** mrq)539 static int h_mspro_block_get_ro(struct memstick_dev *card,
540 struct memstick_request **mrq)
541 {
542 struct mspro_block_data *msb = memstick_get_drvdata(card);
543
544 if (!(*mrq)->error) {
545 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
546 & MEMSTICK_STATUS0_WP)
547 msb->read_only = 1;
548 else
549 msb->read_only = 0;
550 }
551
552 return mspro_block_complete_req(card, (*mrq)->error);
553 }
554
h_mspro_block_wait_for_ced(struct memstick_dev * card,struct memstick_request ** mrq)555 static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
556 struct memstick_request **mrq)
557 {
558 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
559
560 if (!(*mrq)->error) {
561 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
562 (*mrq)->error = -EFAULT;
563 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
564 return 0;
565 }
566
567 return mspro_block_complete_req(card, (*mrq)->error);
568 }
569
h_mspro_block_transfer_data(struct memstick_dev * card,struct memstick_request ** mrq)570 static int h_mspro_block_transfer_data(struct memstick_dev *card,
571 struct memstick_request **mrq)
572 {
573 struct mspro_block_data *msb = memstick_get_drvdata(card);
574 unsigned char t_val = 0;
575 struct scatterlist t_sg = { 0 };
576 size_t t_offset;
577
578 if ((*mrq)->error)
579 return mspro_block_complete_req(card, (*mrq)->error);
580
581 switch ((*mrq)->tpc) {
582 case MS_TPC_WRITE_REG:
583 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
584 (*mrq)->need_card_int = 1;
585 return 0;
586 case MS_TPC_SET_CMD:
587 t_val = (*mrq)->int_reg;
588 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
589 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
590 goto has_int_reg;
591 return 0;
592 case MS_TPC_GET_INT:
593 t_val = (*mrq)->data[0];
594 has_int_reg:
595 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
596 t_val = MSPRO_CMD_STOP;
597 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
598 card->next_request = h_mspro_block_default;
599 return 0;
600 }
601
602 if (msb->current_page
603 == (msb->req_sg[msb->current_seg].length
604 / msb->page_size)) {
605 msb->current_page = 0;
606 msb->current_seg++;
607
608 if (msb->current_seg == msb->seg_count) {
609 if (t_val & MEMSTICK_INT_CED) {
610 return mspro_block_complete_req(card,
611 0);
612 } else {
613 card->next_request
614 = h_mspro_block_wait_for_ced;
615 memstick_init_req(*mrq, MS_TPC_GET_INT,
616 NULL, 1);
617 return 0;
618 }
619 }
620 }
621
622 if (!(t_val & MEMSTICK_INT_BREQ)) {
623 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
624 return 0;
625 }
626
627 t_offset = msb->req_sg[msb->current_seg].offset;
628 t_offset += msb->current_page * msb->page_size;
629
630 sg_set_page(&t_sg,
631 nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
632 t_offset >> PAGE_SHIFT),
633 msb->page_size, offset_in_page(t_offset));
634
635 memstick_init_req_sg(*mrq, msb->data_dir == READ
636 ? MS_TPC_READ_LONG_DATA
637 : MS_TPC_WRITE_LONG_DATA,
638 &t_sg);
639 (*mrq)->need_card_int = 1;
640 return 0;
641 case MS_TPC_READ_LONG_DATA:
642 case MS_TPC_WRITE_LONG_DATA:
643 msb->current_page++;
644 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
645 t_val = (*mrq)->int_reg;
646 goto has_int_reg;
647 } else {
648 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
649 return 0;
650 }
651
652 default:
653 BUG();
654 }
655 }
656
657 /*** Data transfer ***/
658
mspro_block_issue_req(struct memstick_dev * card,int chunk)659 static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
660 {
661 struct mspro_block_data *msb = memstick_get_drvdata(card);
662 sector_t t_sec;
663 unsigned int count;
664 struct mspro_param_register param;
665
666 try_again:
667 while (chunk) {
668 msb->current_page = 0;
669 msb->current_seg = 0;
670 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
671 msb->block_req,
672 msb->req_sg);
673
674 if (!msb->seg_count) {
675 chunk = __blk_end_request(msb->block_req, -ENOMEM,
676 blk_rq_cur_bytes(msb->block_req));
677 continue;
678 }
679
680 t_sec = msb->block_req->sector << 9;
681 sector_div(t_sec, msb->page_size);
682
683 count = msb->block_req->nr_sectors << 9;
684 count /= msb->page_size;
685
686 param.system = msb->system;
687 param.data_count = cpu_to_be16(count);
688 param.data_address = cpu_to_be32((uint32_t)t_sec);
689 param.tpc_param = 0;
690
691 msb->data_dir = rq_data_dir(msb->block_req);
692 msb->transfer_cmd = msb->data_dir == READ
693 ? MSPRO_CMD_READ_DATA
694 : MSPRO_CMD_WRITE_DATA;
695
696 dev_dbg(&card->dev, "data transfer: cmd %x, "
697 "lba %x, count %x\n", msb->transfer_cmd,
698 be32_to_cpu(param.data_address), count);
699
700 card->next_request = h_mspro_block_req_init;
701 msb->mrq_handler = h_mspro_block_transfer_data;
702 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
703 ¶m, sizeof(param));
704 memstick_new_req(card->host);
705 return 0;
706 }
707
708 dev_dbg(&card->dev, "elv_next\n");
709 msb->block_req = elv_next_request(msb->queue);
710 if (!msb->block_req) {
711 dev_dbg(&card->dev, "issue end\n");
712 return -EAGAIN;
713 }
714
715 dev_dbg(&card->dev, "trying again\n");
716 chunk = 1;
717 goto try_again;
718 }
719
mspro_block_complete_req(struct memstick_dev * card,int error)720 static int mspro_block_complete_req(struct memstick_dev *card, int error)
721 {
722 struct mspro_block_data *msb = memstick_get_drvdata(card);
723 int chunk, cnt;
724 unsigned int t_len = 0;
725 unsigned long flags;
726
727 spin_lock_irqsave(&msb->q_lock, flags);
728 dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
729 error);
730
731 if (msb->has_request) {
732 /* Nothing to do - not really an error */
733 if (error == -EAGAIN)
734 error = 0;
735
736 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
737 if (msb->data_dir == READ) {
738 for (cnt = 0; cnt < msb->current_seg; cnt++)
739 t_len += msb->req_sg[cnt].length
740 / msb->page_size;
741
742 if (msb->current_page)
743 t_len += msb->current_page - 1;
744
745 t_len *= msb->page_size;
746 }
747 } else
748 t_len = msb->block_req->nr_sectors << 9;
749
750 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
751
752 if (error && !t_len)
753 t_len = blk_rq_cur_bytes(msb->block_req);
754
755 chunk = __blk_end_request(msb->block_req, error, t_len);
756
757 error = mspro_block_issue_req(card, chunk);
758
759 if (!error)
760 goto out;
761 else
762 msb->has_request = 0;
763 } else {
764 if (!error)
765 error = -EAGAIN;
766 }
767
768 card->next_request = h_mspro_block_default_bad;
769 complete_all(&card->mrq_complete);
770 out:
771 spin_unlock_irqrestore(&msb->q_lock, flags);
772 return error;
773 }
774
mspro_block_stop(struct memstick_dev * card)775 static void mspro_block_stop(struct memstick_dev *card)
776 {
777 struct mspro_block_data *msb = memstick_get_drvdata(card);
778 int rc = 0;
779 unsigned long flags;
780
781 while (1) {
782 spin_lock_irqsave(&msb->q_lock, flags);
783 if (!msb->has_request) {
784 blk_stop_queue(msb->queue);
785 rc = 1;
786 }
787 spin_unlock_irqrestore(&msb->q_lock, flags);
788
789 if (rc)
790 break;
791
792 wait_for_completion(&card->mrq_complete);
793 }
794 }
795
mspro_block_start(struct memstick_dev * card)796 static void mspro_block_start(struct memstick_dev *card)
797 {
798 struct mspro_block_data *msb = memstick_get_drvdata(card);
799 unsigned long flags;
800
801 spin_lock_irqsave(&msb->q_lock, flags);
802 blk_start_queue(msb->queue);
803 spin_unlock_irqrestore(&msb->q_lock, flags);
804 }
805
mspro_block_prepare_req(struct request_queue * q,struct request * req)806 static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
807 {
808 if (!blk_fs_request(req) && !blk_pc_request(req)) {
809 blk_dump_rq_flags(req, "MSPro unsupported request");
810 return BLKPREP_KILL;
811 }
812
813 req->cmd_flags |= REQ_DONTPREP;
814
815 return BLKPREP_OK;
816 }
817
mspro_block_submit_req(struct request_queue * q)818 static void mspro_block_submit_req(struct request_queue *q)
819 {
820 struct memstick_dev *card = q->queuedata;
821 struct mspro_block_data *msb = memstick_get_drvdata(card);
822 struct request *req = NULL;
823
824 if (msb->has_request)
825 return;
826
827 if (msb->eject) {
828 while ((req = elv_next_request(q)) != NULL)
829 __blk_end_request(req, -ENODEV, blk_rq_bytes(req));
830
831 return;
832 }
833
834 msb->has_request = 1;
835 if (mspro_block_issue_req(card, 0))
836 msb->has_request = 0;
837 }
838
839 /*** Initialization ***/
840
mspro_block_wait_for_ced(struct memstick_dev * card)841 static int mspro_block_wait_for_ced(struct memstick_dev *card)
842 {
843 struct mspro_block_data *msb = memstick_get_drvdata(card);
844
845 card->next_request = h_mspro_block_req_init;
846 msb->mrq_handler = h_mspro_block_wait_for_ced;
847 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
848 memstick_new_req(card->host);
849 wait_for_completion(&card->mrq_complete);
850 return card->current_mrq.error;
851 }
852
mspro_block_set_interface(struct memstick_dev * card,unsigned char sys_reg)853 static int mspro_block_set_interface(struct memstick_dev *card,
854 unsigned char sys_reg)
855 {
856 struct memstick_host *host = card->host;
857 struct mspro_block_data *msb = memstick_get_drvdata(card);
858 struct mspro_param_register param = {
859 .system = sys_reg,
860 .data_count = 0,
861 .data_address = 0,
862 .tpc_param = 0
863 };
864
865 card->next_request = h_mspro_block_req_init;
866 msb->mrq_handler = h_mspro_block_default;
867 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m,
868 sizeof(param));
869 memstick_new_req(host);
870 wait_for_completion(&card->mrq_complete);
871 return card->current_mrq.error;
872 }
873
mspro_block_switch_interface(struct memstick_dev * card)874 static int mspro_block_switch_interface(struct memstick_dev *card)
875 {
876 struct memstick_host *host = card->host;
877 struct mspro_block_data *msb = memstick_get_drvdata(card);
878 int rc = 0;
879
880 try_again:
881 if (msb->caps & MEMSTICK_CAP_PAR4)
882 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
883 else
884 return 0;
885
886 if (rc) {
887 printk(KERN_WARNING
888 "%s: could not switch to 4-bit mode, error %d\n",
889 dev_name(&card->dev), rc);
890 return 0;
891 }
892
893 msb->system = MEMSTICK_SYS_PAR4;
894 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
895 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
896 dev_name(&card->dev));
897
898 if (msb->caps & MEMSTICK_CAP_PAR8) {
899 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
900
901 if (!rc) {
902 msb->system = MEMSTICK_SYS_PAR8;
903 host->set_param(host, MEMSTICK_INTERFACE,
904 MEMSTICK_PAR8);
905 printk(KERN_INFO
906 "%s: switching to 8-bit parallel mode\n",
907 dev_name(&card->dev));
908 } else
909 printk(KERN_WARNING
910 "%s: could not switch to 8-bit mode, error %d\n",
911 dev_name(&card->dev), rc);
912 }
913
914 card->next_request = h_mspro_block_req_init;
915 msb->mrq_handler = h_mspro_block_default;
916 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
917 memstick_new_req(card->host);
918 wait_for_completion(&card->mrq_complete);
919 rc = card->current_mrq.error;
920
921 if (rc) {
922 printk(KERN_WARNING
923 "%s: interface error, trying to fall back to serial\n",
924 dev_name(&card->dev));
925 msb->system = MEMSTICK_SYS_SERIAL;
926 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
927 msleep(10);
928 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
929 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
930
931 rc = memstick_set_rw_addr(card);
932 if (!rc)
933 rc = mspro_block_set_interface(card, msb->system);
934
935 if (!rc) {
936 msleep(150);
937 rc = mspro_block_wait_for_ced(card);
938 if (rc)
939 return rc;
940
941 if (msb->caps & MEMSTICK_CAP_PAR8) {
942 msb->caps &= ~MEMSTICK_CAP_PAR8;
943 goto try_again;
944 }
945 }
946 }
947 return rc;
948 }
949
950 /* Memory allocated for attributes by this function should be freed by
951 * mspro_block_data_clear, no matter if the initialization process succeded
952 * or failed.
953 */
mspro_block_read_attributes(struct memstick_dev * card)954 static int mspro_block_read_attributes(struct memstick_dev *card)
955 {
956 struct mspro_block_data *msb = memstick_get_drvdata(card);
957 struct mspro_param_register param = {
958 .system = msb->system,
959 .data_count = cpu_to_be16(1),
960 .data_address = 0,
961 .tpc_param = 0
962 };
963 struct mspro_attribute *attr = NULL;
964 struct mspro_sys_attr *s_attr = NULL;
965 unsigned char *buffer = NULL;
966 int cnt, rc, attr_count;
967 unsigned int addr;
968 unsigned short page_count;
969
970 attr = kmalloc(msb->page_size, GFP_KERNEL);
971 if (!attr)
972 return -ENOMEM;
973
974 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
975 msb->seg_count = 1;
976 msb->current_seg = 0;
977 msb->current_page = 0;
978 msb->data_dir = READ;
979 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
980
981 card->next_request = h_mspro_block_req_init;
982 msb->mrq_handler = h_mspro_block_transfer_data;
983 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m,
984 sizeof(param));
985 memstick_new_req(card->host);
986 wait_for_completion(&card->mrq_complete);
987 if (card->current_mrq.error) {
988 rc = card->current_mrq.error;
989 goto out_free_attr;
990 }
991
992 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
993 printk(KERN_ERR "%s: unrecognized device signature %x\n",
994 dev_name(&card->dev), be16_to_cpu(attr->signature));
995 rc = -ENODEV;
996 goto out_free_attr;
997 }
998
999 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1000 printk(KERN_WARNING "%s: way too many attribute entries\n",
1001 dev_name(&card->dev));
1002 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1003 } else
1004 attr_count = attr->count;
1005
1006 msb->attr_group.attrs = kzalloc((attr_count + 1)
1007 * sizeof(struct attribute),
1008 GFP_KERNEL);
1009 if (!msb->attr_group.attrs) {
1010 rc = -ENOMEM;
1011 goto out_free_attr;
1012 }
1013 msb->attr_group.name = "media_attributes";
1014
1015 buffer = kmalloc(msb->page_size, GFP_KERNEL);
1016 if (!buffer) {
1017 rc = -ENOMEM;
1018 goto out_free_attr;
1019 }
1020 memcpy(buffer, (char *)attr, msb->page_size);
1021 page_count = 1;
1022
1023 for (cnt = 0; cnt < attr_count; ++cnt) {
1024 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1025 if (!s_attr) {
1026 rc = -ENOMEM;
1027 goto out_free_buffer;
1028 }
1029
1030 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1031 addr = be32_to_cpu(attr->entries[cnt].address);
1032 rc = be32_to_cpu(attr->entries[cnt].size);
1033 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1034 "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
1035 s_attr->id = attr->entries[cnt].id;
1036 if (mspro_block_attr_name(s_attr->id))
1037 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1038 mspro_block_attr_name(attr->entries[cnt].id));
1039 else
1040 snprintf(s_attr->name, sizeof(s_attr->name),
1041 "attr_x%02x", attr->entries[cnt].id);
1042
1043 s_attr->dev_attr.attr.name = s_attr->name;
1044 s_attr->dev_attr.attr.mode = S_IRUGO;
1045 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1046
1047 if (!rc)
1048 continue;
1049
1050 s_attr->size = rc;
1051 s_attr->data = kmalloc(rc, GFP_KERNEL);
1052 if (!s_attr->data) {
1053 rc = -ENOMEM;
1054 goto out_free_buffer;
1055 }
1056
1057 if (((addr / msb->page_size)
1058 == be32_to_cpu(param.data_address))
1059 && (((addr + rc - 1) / msb->page_size)
1060 == be32_to_cpu(param.data_address))) {
1061 memcpy(s_attr->data, buffer + addr % msb->page_size,
1062 rc);
1063 continue;
1064 }
1065
1066 if (page_count <= (rc / msb->page_size)) {
1067 kfree(buffer);
1068 page_count = (rc / msb->page_size) + 1;
1069 buffer = kmalloc(page_count * msb->page_size,
1070 GFP_KERNEL);
1071 if (!buffer) {
1072 rc = -ENOMEM;
1073 goto out_free_attr;
1074 }
1075 }
1076
1077 param.system = msb->system;
1078 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
1079 param.data_address = cpu_to_be32(addr / msb->page_size);
1080 param.tpc_param = 0;
1081
1082 sg_init_one(&msb->req_sg[0], buffer,
1083 be16_to_cpu(param.data_count) * msb->page_size);
1084 msb->seg_count = 1;
1085 msb->current_seg = 0;
1086 msb->current_page = 0;
1087 msb->data_dir = READ;
1088 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1089
1090 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
1091 be32_to_cpu(param.data_address),
1092 be16_to_cpu(param.data_count));
1093
1094 card->next_request = h_mspro_block_req_init;
1095 msb->mrq_handler = h_mspro_block_transfer_data;
1096 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
1097 (char *)¶m, sizeof(param));
1098 memstick_new_req(card->host);
1099 wait_for_completion(&card->mrq_complete);
1100 if (card->current_mrq.error) {
1101 rc = card->current_mrq.error;
1102 goto out_free_buffer;
1103 }
1104
1105 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
1106 }
1107
1108 rc = 0;
1109 out_free_buffer:
1110 kfree(buffer);
1111 out_free_attr:
1112 kfree(attr);
1113 return rc;
1114 }
1115
mspro_block_init_card(struct memstick_dev * card)1116 static int mspro_block_init_card(struct memstick_dev *card)
1117 {
1118 struct mspro_block_data *msb = memstick_get_drvdata(card);
1119 struct memstick_host *host = card->host;
1120 int rc = 0;
1121
1122 msb->system = MEMSTICK_SYS_SERIAL;
1123 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1124 card->reg_addr.r_length = sizeof(struct ms_status_register);
1125 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1126 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1127
1128 if (memstick_set_rw_addr(card))
1129 return -EIO;
1130
1131 msb->caps = host->caps;
1132
1133 msleep(150);
1134 rc = mspro_block_wait_for_ced(card);
1135 if (rc)
1136 return rc;
1137
1138 rc = mspro_block_switch_interface(card);
1139 if (rc)
1140 return rc;
1141
1142 dev_dbg(&card->dev, "card activated\n");
1143 if (msb->system != MEMSTICK_SYS_SERIAL)
1144 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1145
1146 card->next_request = h_mspro_block_req_init;
1147 msb->mrq_handler = h_mspro_block_get_ro;
1148 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1149 sizeof(struct ms_status_register));
1150 memstick_new_req(card->host);
1151 wait_for_completion(&card->mrq_complete);
1152 if (card->current_mrq.error)
1153 return card->current_mrq.error;
1154
1155 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1156
1157 msb->page_size = 512;
1158 rc = mspro_block_read_attributes(card);
1159 if (rc)
1160 return rc;
1161
1162 dev_dbg(&card->dev, "attributes loaded\n");
1163 return 0;
1164
1165 }
1166
mspro_block_init_disk(struct memstick_dev * card)1167 static int mspro_block_init_disk(struct memstick_dev *card)
1168 {
1169 struct mspro_block_data *msb = memstick_get_drvdata(card);
1170 struct memstick_host *host = card->host;
1171 struct mspro_devinfo *dev_info = NULL;
1172 struct mspro_sys_info *sys_info = NULL;
1173 struct mspro_sys_attr *s_attr = NULL;
1174 int rc, disk_id;
1175 u64 limit = BLK_BOUNCE_HIGH;
1176 unsigned long capacity;
1177
1178 if (host->dev.dma_mask && *(host->dev.dma_mask))
1179 limit = *(host->dev.dma_mask);
1180
1181 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1182 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1183
1184 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1185 dev_info = s_attr->data;
1186 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1187 sys_info = s_attr->data;
1188 }
1189
1190 if (!dev_info || !sys_info)
1191 return -ENODEV;
1192
1193 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1194 msb->heads = be16_to_cpu(dev_info->heads);
1195 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1196
1197 msb->page_size = be16_to_cpu(sys_info->unit_size);
1198
1199 if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1200 return -ENOMEM;
1201
1202 mutex_lock(&mspro_block_disk_lock);
1203 rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1204 mutex_unlock(&mspro_block_disk_lock);
1205
1206 if (rc)
1207 return rc;
1208
1209 if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
1210 rc = -ENOSPC;
1211 goto out_release_id;
1212 }
1213
1214 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
1215 if (!msb->disk) {
1216 rc = -ENOMEM;
1217 goto out_release_id;
1218 }
1219
1220 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
1221 if (!msb->queue) {
1222 rc = -ENOMEM;
1223 goto out_put_disk;
1224 }
1225
1226 msb->queue->queuedata = card;
1227 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
1228
1229 blk_queue_bounce_limit(msb->queue, limit);
1230 blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1231 blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1232 blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1233 blk_queue_max_segment_size(msb->queue,
1234 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1235
1236 msb->disk->major = major;
1237 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1238 msb->disk->fops = &ms_block_bdops;
1239 msb->usage_count = 1;
1240 msb->disk->private_data = msb;
1241 msb->disk->queue = msb->queue;
1242 msb->disk->driverfs_dev = &card->dev;
1243
1244 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1245
1246 blk_queue_hardsect_size(msb->queue, msb->page_size);
1247
1248 capacity = be16_to_cpu(sys_info->user_block_count);
1249 capacity *= be16_to_cpu(sys_info->block_size);
1250 capacity *= msb->page_size >> 9;
1251 set_capacity(msb->disk, capacity);
1252 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1253
1254 add_disk(msb->disk);
1255 msb->active = 1;
1256 return 0;
1257
1258 out_put_disk:
1259 put_disk(msb->disk);
1260 out_release_id:
1261 mutex_lock(&mspro_block_disk_lock);
1262 idr_remove(&mspro_block_disk_idr, disk_id);
1263 mutex_unlock(&mspro_block_disk_lock);
1264 return rc;
1265 }
1266
mspro_block_data_clear(struct mspro_block_data * msb)1267 static void mspro_block_data_clear(struct mspro_block_data *msb)
1268 {
1269 int cnt;
1270 struct mspro_sys_attr *s_attr;
1271
1272 if (msb->attr_group.attrs) {
1273 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1274 s_attr = mspro_from_sysfs_attr(msb->attr_group
1275 .attrs[cnt]);
1276 kfree(s_attr->data);
1277 kfree(s_attr);
1278 }
1279 kfree(msb->attr_group.attrs);
1280 }
1281
1282 msb->card = NULL;
1283 }
1284
mspro_block_check_card(struct memstick_dev * card)1285 static int mspro_block_check_card(struct memstick_dev *card)
1286 {
1287 struct mspro_block_data *msb = memstick_get_drvdata(card);
1288
1289 return (msb->active == 1);
1290 }
1291
mspro_block_probe(struct memstick_dev * card)1292 static int mspro_block_probe(struct memstick_dev *card)
1293 {
1294 struct mspro_block_data *msb;
1295 int rc = 0;
1296
1297 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1298 if (!msb)
1299 return -ENOMEM;
1300 memstick_set_drvdata(card, msb);
1301 msb->card = card;
1302 spin_lock_init(&msb->q_lock);
1303
1304 rc = mspro_block_init_card(card);
1305
1306 if (rc)
1307 goto out_free;
1308
1309 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1310 if (rc)
1311 goto out_free;
1312
1313 rc = mspro_block_init_disk(card);
1314 if (!rc) {
1315 card->check = mspro_block_check_card;
1316 card->stop = mspro_block_stop;
1317 card->start = mspro_block_start;
1318 return 0;
1319 }
1320
1321 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1322 out_free:
1323 memstick_set_drvdata(card, NULL);
1324 mspro_block_data_clear(msb);
1325 kfree(msb);
1326 return rc;
1327 }
1328
mspro_block_remove(struct memstick_dev * card)1329 static void mspro_block_remove(struct memstick_dev *card)
1330 {
1331 struct mspro_block_data *msb = memstick_get_drvdata(card);
1332 unsigned long flags;
1333
1334 del_gendisk(msb->disk);
1335 dev_dbg(&card->dev, "mspro block remove\n");
1336 spin_lock_irqsave(&msb->q_lock, flags);
1337 msb->eject = 1;
1338 blk_start_queue(msb->queue);
1339 spin_unlock_irqrestore(&msb->q_lock, flags);
1340
1341 blk_cleanup_queue(msb->queue);
1342 msb->queue = NULL;
1343
1344 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1345
1346 mutex_lock(&mspro_block_disk_lock);
1347 mspro_block_data_clear(msb);
1348 mutex_unlock(&mspro_block_disk_lock);
1349
1350 mspro_block_disk_release(msb->disk);
1351 memstick_set_drvdata(card, NULL);
1352 }
1353
1354 #ifdef CONFIG_PM
1355
mspro_block_suspend(struct memstick_dev * card,pm_message_t state)1356 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1357 {
1358 struct mspro_block_data *msb = memstick_get_drvdata(card);
1359 unsigned long flags;
1360
1361 spin_lock_irqsave(&msb->q_lock, flags);
1362 blk_stop_queue(msb->queue);
1363 msb->active = 0;
1364 spin_unlock_irqrestore(&msb->q_lock, flags);
1365
1366 return 0;
1367 }
1368
mspro_block_resume(struct memstick_dev * card)1369 static int mspro_block_resume(struct memstick_dev *card)
1370 {
1371 struct mspro_block_data *msb = memstick_get_drvdata(card);
1372 unsigned long flags;
1373 int rc = 0;
1374
1375 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1376
1377 struct mspro_block_data *new_msb;
1378 struct memstick_host *host = card->host;
1379 struct mspro_sys_attr *s_attr, *r_attr;
1380 unsigned char cnt;
1381
1382 mutex_lock(&host->lock);
1383 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1384 if (!new_msb) {
1385 rc = -ENOMEM;
1386 goto out_unlock;
1387 }
1388
1389 new_msb->card = card;
1390 memstick_set_drvdata(card, new_msb);
1391 if (mspro_block_init_card(card))
1392 goto out_free;
1393
1394 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1395 && msb->attr_group.attrs[cnt]; ++cnt) {
1396 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1397 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1398
1399 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1400 && r_attr->id == s_attr->id) {
1401 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1402 break;
1403
1404 msb->active = 1;
1405 break;
1406 }
1407 }
1408
1409 out_free:
1410 memstick_set_drvdata(card, msb);
1411 mspro_block_data_clear(new_msb);
1412 kfree(new_msb);
1413 out_unlock:
1414 mutex_unlock(&host->lock);
1415
1416 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1417
1418 spin_lock_irqsave(&msb->q_lock, flags);
1419 blk_start_queue(msb->queue);
1420 spin_unlock_irqrestore(&msb->q_lock, flags);
1421 return rc;
1422 }
1423
1424 #else
1425
1426 #define mspro_block_suspend NULL
1427 #define mspro_block_resume NULL
1428
1429 #endif /* CONFIG_PM */
1430
1431 static struct memstick_device_id mspro_block_id_tbl[] = {
1432 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1433 MEMSTICK_CLASS_DUO},
1434 {}
1435 };
1436
1437
1438 static struct memstick_driver mspro_block_driver = {
1439 .driver = {
1440 .name = DRIVER_NAME,
1441 .owner = THIS_MODULE
1442 },
1443 .id_table = mspro_block_id_tbl,
1444 .probe = mspro_block_probe,
1445 .remove = mspro_block_remove,
1446 .suspend = mspro_block_suspend,
1447 .resume = mspro_block_resume
1448 };
1449
mspro_block_init(void)1450 static int __init mspro_block_init(void)
1451 {
1452 int rc = -ENOMEM;
1453
1454 rc = register_blkdev(major, DRIVER_NAME);
1455 if (rc < 0) {
1456 printk(KERN_ERR DRIVER_NAME ": failed to register "
1457 "major %d, error %d\n", major, rc);
1458 return rc;
1459 }
1460 if (!major)
1461 major = rc;
1462
1463 rc = memstick_register_driver(&mspro_block_driver);
1464 if (rc)
1465 unregister_blkdev(major, DRIVER_NAME);
1466 return rc;
1467 }
1468
mspro_block_exit(void)1469 static void __exit mspro_block_exit(void)
1470 {
1471 memstick_unregister_driver(&mspro_block_driver);
1472 unregister_blkdev(major, DRIVER_NAME);
1473 idr_destroy(&mspro_block_disk_idr);
1474 }
1475
1476 module_init(mspro_block_init);
1477 module_exit(mspro_block_exit);
1478
1479 MODULE_LICENSE("GPL");
1480 MODULE_AUTHOR("Alex Dubov");
1481 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1482 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
1483