const: make block_device_operations const
[linux-3.10.git] / drivers / memstick / core / mspro_block.c
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
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
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
221 static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
222 {
223         return mspro_block_disk_release(disk);
224 }
225
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 const 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
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
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
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
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
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
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
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
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
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
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
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
533 static int h_mspro_block_default_bad(struct memstick_dev *card,
534                                      struct memstick_request **mrq)
535 {
536         return -ENXIO;
537 }
538
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
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
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
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_cur(msb->block_req, -ENOMEM);
676                         continue;
677                 }
678
679                 t_sec = blk_rq_pos(msb->block_req) << 9;
680                 sector_div(t_sec, msb->page_size);
681
682                 count = blk_rq_bytes(msb->block_req);
683                 count /= msb->page_size;
684
685                 param.system = msb->system;
686                 param.data_count = cpu_to_be16(count);
687                 param.data_address = cpu_to_be32((uint32_t)t_sec);
688                 param.tpc_param = 0;
689
690                 msb->data_dir = rq_data_dir(msb->block_req);
691                 msb->transfer_cmd = msb->data_dir == READ
692                                     ? MSPRO_CMD_READ_DATA
693                                     : MSPRO_CMD_WRITE_DATA;
694
695                 dev_dbg(&card->dev, "data transfer: cmd %x, "
696                         "lba %x, count %x\n", msb->transfer_cmd,
697                         be32_to_cpu(param.data_address), count);
698
699                 card->next_request = h_mspro_block_req_init;
700                 msb->mrq_handler = h_mspro_block_transfer_data;
701                 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
702                                   &param, sizeof(param));
703                 memstick_new_req(card->host);
704                 return 0;
705         }
706
707         dev_dbg(&card->dev, "blk_fetch\n");
708         msb->block_req = blk_fetch_request(msb->queue);
709         if (!msb->block_req) {
710                 dev_dbg(&card->dev, "issue end\n");
711                 return -EAGAIN;
712         }
713
714         dev_dbg(&card->dev, "trying again\n");
715         chunk = 1;
716         goto try_again;
717 }
718
719 static int mspro_block_complete_req(struct memstick_dev *card, int error)
720 {
721         struct mspro_block_data *msb = memstick_get_drvdata(card);
722         int chunk, cnt;
723         unsigned int t_len = 0;
724         unsigned long flags;
725
726         spin_lock_irqsave(&msb->q_lock, flags);
727         dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
728                 error);
729
730         if (msb->has_request) {
731                 /* Nothing to do - not really an error */
732                 if (error == -EAGAIN)
733                         error = 0;
734
735                 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
736                         if (msb->data_dir == READ) {
737                                 for (cnt = 0; cnt < msb->current_seg; cnt++)
738                                         t_len += msb->req_sg[cnt].length
739                                                  / msb->page_size;
740
741                                         if (msb->current_page)
742                                                 t_len += msb->current_page - 1;
743
744                                         t_len *= msb->page_size;
745                         }
746                 } else
747                         t_len = blk_rq_bytes(msb->block_req);
748
749                 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
750
751                 if (error && !t_len)
752                         t_len = blk_rq_cur_bytes(msb->block_req);
753
754                 chunk = __blk_end_request(msb->block_req, error, t_len);
755
756                 error = mspro_block_issue_req(card, chunk);
757
758                 if (!error)
759                         goto out;
760                 else
761                         msb->has_request = 0;
762         } else {
763                 if (!error)
764                         error = -EAGAIN;
765         }
766
767         card->next_request = h_mspro_block_default_bad;
768         complete_all(&card->mrq_complete);
769 out:
770         spin_unlock_irqrestore(&msb->q_lock, flags);
771         return error;
772 }
773
774 static void mspro_block_stop(struct memstick_dev *card)
775 {
776         struct mspro_block_data *msb = memstick_get_drvdata(card);
777         int rc = 0;
778         unsigned long flags;
779
780         while (1) {
781                 spin_lock_irqsave(&msb->q_lock, flags);
782                 if (!msb->has_request) {
783                         blk_stop_queue(msb->queue);
784                         rc = 1;
785                 }
786                 spin_unlock_irqrestore(&msb->q_lock, flags);
787
788                 if (rc)
789                         break;
790
791                 wait_for_completion(&card->mrq_complete);
792         }
793 }
794
795 static void mspro_block_start(struct memstick_dev *card)
796 {
797         struct mspro_block_data *msb = memstick_get_drvdata(card);
798         unsigned long flags;
799
800         spin_lock_irqsave(&msb->q_lock, flags);
801         blk_start_queue(msb->queue);
802         spin_unlock_irqrestore(&msb->q_lock, flags);
803 }
804
805 static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
806 {
807         if (!blk_fs_request(req) && !blk_pc_request(req)) {
808                 blk_dump_rq_flags(req, "MSPro unsupported request");
809                 return BLKPREP_KILL;
810         }
811
812         req->cmd_flags |= REQ_DONTPREP;
813
814         return BLKPREP_OK;
815 }
816
817 static void mspro_block_submit_req(struct request_queue *q)
818 {
819         struct memstick_dev *card = q->queuedata;
820         struct mspro_block_data *msb = memstick_get_drvdata(card);
821         struct request *req = NULL;
822
823         if (msb->has_request)
824                 return;
825
826         if (msb->eject) {
827                 while ((req = blk_fetch_request(q)) != NULL)
828                         __blk_end_request_all(req, -ENODEV);
829
830                 return;
831         }
832
833         msb->has_request = 1;
834         if (mspro_block_issue_req(card, 0))
835                 msb->has_request = 0;
836 }
837
838 /*** Initialization ***/
839
840 static int mspro_block_wait_for_ced(struct memstick_dev *card)
841 {
842         struct mspro_block_data *msb = memstick_get_drvdata(card);
843
844         card->next_request = h_mspro_block_req_init;
845         msb->mrq_handler = h_mspro_block_wait_for_ced;
846         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
847         memstick_new_req(card->host);
848         wait_for_completion(&card->mrq_complete);
849         return card->current_mrq.error;
850 }
851
852 static int mspro_block_set_interface(struct memstick_dev *card,
853                                      unsigned char sys_reg)
854 {
855         struct memstick_host *host = card->host;
856         struct mspro_block_data *msb = memstick_get_drvdata(card);
857         struct mspro_param_register param = {
858                 .system = sys_reg,
859                 .data_count = 0,
860                 .data_address = 0,
861                 .tpc_param = 0
862         };
863
864         card->next_request = h_mspro_block_req_init;
865         msb->mrq_handler = h_mspro_block_default;
866         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
867                           sizeof(param));
868         memstick_new_req(host);
869         wait_for_completion(&card->mrq_complete);
870         return card->current_mrq.error;
871 }
872
873 static int mspro_block_switch_interface(struct memstick_dev *card)
874 {
875         struct memstick_host *host = card->host;
876         struct mspro_block_data *msb = memstick_get_drvdata(card);
877         int rc = 0;
878
879 try_again:
880         if (msb->caps & MEMSTICK_CAP_PAR4)
881                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
882         else
883                 return 0;
884
885         if (rc) {
886                 printk(KERN_WARNING
887                        "%s: could not switch to 4-bit mode, error %d\n",
888                        dev_name(&card->dev), rc);
889                 return 0;
890         }
891
892         msb->system = MEMSTICK_SYS_PAR4;
893         host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
894         printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
895                dev_name(&card->dev));
896
897         if (msb->caps & MEMSTICK_CAP_PAR8) {
898                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
899
900                 if (!rc) {
901                         msb->system = MEMSTICK_SYS_PAR8;
902                         host->set_param(host, MEMSTICK_INTERFACE,
903                                         MEMSTICK_PAR8);
904                         printk(KERN_INFO
905                                "%s: switching to 8-bit parallel mode\n",
906                                dev_name(&card->dev));
907                 } else
908                         printk(KERN_WARNING
909                                "%s: could not switch to 8-bit mode, error %d\n",
910                                dev_name(&card->dev), rc);
911         }
912
913         card->next_request = h_mspro_block_req_init;
914         msb->mrq_handler = h_mspro_block_default;
915         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
916         memstick_new_req(card->host);
917         wait_for_completion(&card->mrq_complete);
918         rc = card->current_mrq.error;
919
920         if (rc) {
921                 printk(KERN_WARNING
922                        "%s: interface error, trying to fall back to serial\n",
923                        dev_name(&card->dev));
924                 msb->system = MEMSTICK_SYS_SERIAL;
925                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
926                 msleep(10);
927                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
928                 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
929
930                 rc = memstick_set_rw_addr(card);
931                 if (!rc)
932                         rc = mspro_block_set_interface(card, msb->system);
933
934                 if (!rc) {
935                         msleep(150);
936                         rc = mspro_block_wait_for_ced(card);
937                         if (rc)
938                                 return rc;
939
940                         if (msb->caps & MEMSTICK_CAP_PAR8) {
941                                 msb->caps &= ~MEMSTICK_CAP_PAR8;
942                                 goto try_again;
943                         }
944                 }
945         }
946         return rc;
947 }
948
949 /* Memory allocated for attributes by this function should be freed by
950  * mspro_block_data_clear, no matter if the initialization process succeded
951  * or failed.
952  */
953 static int mspro_block_read_attributes(struct memstick_dev *card)
954 {
955         struct mspro_block_data *msb = memstick_get_drvdata(card);
956         struct mspro_param_register param = {
957                 .system = msb->system,
958                 .data_count = cpu_to_be16(1),
959                 .data_address = 0,
960                 .tpc_param = 0
961         };
962         struct mspro_attribute *attr = NULL;
963         struct mspro_sys_attr *s_attr = NULL;
964         unsigned char *buffer = NULL;
965         int cnt, rc, attr_count;
966         unsigned int addr;
967         unsigned short page_count;
968
969         attr = kmalloc(msb->page_size, GFP_KERNEL);
970         if (!attr)
971                 return -ENOMEM;
972
973         sg_init_one(&msb->req_sg[0], attr, msb->page_size);
974         msb->seg_count = 1;
975         msb->current_seg = 0;
976         msb->current_page = 0;
977         msb->data_dir = READ;
978         msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
979
980         card->next_request = h_mspro_block_req_init;
981         msb->mrq_handler = h_mspro_block_transfer_data;
982         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
983                           sizeof(param));
984         memstick_new_req(card->host);
985         wait_for_completion(&card->mrq_complete);
986         if (card->current_mrq.error) {
987                 rc = card->current_mrq.error;
988                 goto out_free_attr;
989         }
990
991         if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
992                 printk(KERN_ERR "%s: unrecognized device signature %x\n",
993                        dev_name(&card->dev), be16_to_cpu(attr->signature));
994                 rc = -ENODEV;
995                 goto out_free_attr;
996         }
997
998         if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
999                 printk(KERN_WARNING "%s: way too many attribute entries\n",
1000                        dev_name(&card->dev));
1001                 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1002         } else
1003                 attr_count = attr->count;
1004
1005         msb->attr_group.attrs = kzalloc((attr_count + 1)
1006                                         * sizeof(struct attribute),
1007                                         GFP_KERNEL);
1008         if (!msb->attr_group.attrs) {
1009                 rc = -ENOMEM;
1010                 goto out_free_attr;
1011         }
1012         msb->attr_group.name = "media_attributes";
1013
1014         buffer = kmalloc(msb->page_size, GFP_KERNEL);
1015         if (!buffer) {
1016                 rc = -ENOMEM;
1017                 goto out_free_attr;
1018         }
1019         memcpy(buffer, (char *)attr, msb->page_size);
1020         page_count = 1;
1021
1022         for (cnt = 0; cnt < attr_count; ++cnt) {
1023                 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1024                 if (!s_attr) {
1025                         rc = -ENOMEM;
1026                         goto out_free_buffer;
1027                 }
1028
1029                 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1030                 addr = be32_to_cpu(attr->entries[cnt].address);
1031                 rc = be32_to_cpu(attr->entries[cnt].size);
1032                 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1033                         "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
1034                 s_attr->id = attr->entries[cnt].id;
1035                 if (mspro_block_attr_name(s_attr->id))
1036                         snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1037                                  mspro_block_attr_name(attr->entries[cnt].id));
1038                 else
1039                         snprintf(s_attr->name, sizeof(s_attr->name),
1040                                  "attr_x%02x", attr->entries[cnt].id);
1041
1042                 s_attr->dev_attr.attr.name = s_attr->name;
1043                 s_attr->dev_attr.attr.mode = S_IRUGO;
1044                 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1045
1046                 if (!rc)
1047                         continue;
1048
1049                 s_attr->size = rc;
1050                 s_attr->data = kmalloc(rc, GFP_KERNEL);
1051                 if (!s_attr->data) {
1052                         rc = -ENOMEM;
1053                         goto out_free_buffer;
1054                 }
1055
1056                 if (((addr / msb->page_size)
1057                      == be32_to_cpu(param.data_address))
1058                     && (((addr + rc - 1) / msb->page_size)
1059                         == be32_to_cpu(param.data_address))) {
1060                         memcpy(s_attr->data, buffer + addr % msb->page_size,
1061                                rc);
1062                         continue;
1063                 }
1064
1065                 if (page_count <= (rc / msb->page_size)) {
1066                         kfree(buffer);
1067                         page_count = (rc / msb->page_size) + 1;
1068                         buffer = kmalloc(page_count * msb->page_size,
1069                                          GFP_KERNEL);
1070                         if (!buffer) {
1071                                 rc = -ENOMEM;
1072                                 goto out_free_attr;
1073                         }
1074                 }
1075
1076                 param.system = msb->system;
1077                 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
1078                 param.data_address = cpu_to_be32(addr / msb->page_size);
1079                 param.tpc_param = 0;
1080
1081                 sg_init_one(&msb->req_sg[0], buffer,
1082                             be16_to_cpu(param.data_count) * msb->page_size);
1083                 msb->seg_count = 1;
1084                 msb->current_seg = 0;
1085                 msb->current_page = 0;
1086                 msb->data_dir = READ;
1087                 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1088
1089                 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
1090                         be32_to_cpu(param.data_address),
1091                         be16_to_cpu(param.data_count));
1092
1093                 card->next_request = h_mspro_block_req_init;
1094                 msb->mrq_handler = h_mspro_block_transfer_data;
1095                 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
1096                                   (char *)&param, sizeof(param));
1097                 memstick_new_req(card->host);
1098                 wait_for_completion(&card->mrq_complete);
1099                 if (card->current_mrq.error) {
1100                         rc = card->current_mrq.error;
1101                         goto out_free_buffer;
1102                 }
1103
1104                 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
1105         }
1106
1107         rc = 0;
1108 out_free_buffer:
1109         kfree(buffer);
1110 out_free_attr:
1111         kfree(attr);
1112         return rc;
1113 }
1114
1115 static int mspro_block_init_card(struct memstick_dev *card)
1116 {
1117         struct mspro_block_data *msb = memstick_get_drvdata(card);
1118         struct memstick_host *host = card->host;
1119         int rc = 0;
1120
1121         msb->system = MEMSTICK_SYS_SERIAL;
1122         card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1123         card->reg_addr.r_length = sizeof(struct ms_status_register);
1124         card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1125         card->reg_addr.w_length = sizeof(struct mspro_param_register);
1126
1127         if (memstick_set_rw_addr(card))
1128                 return -EIO;
1129
1130         msb->caps = host->caps;
1131
1132         msleep(150);
1133         rc = mspro_block_wait_for_ced(card);
1134         if (rc)
1135                 return rc;
1136
1137         rc = mspro_block_switch_interface(card);
1138         if (rc)
1139                 return rc;
1140
1141         dev_dbg(&card->dev, "card activated\n");
1142         if (msb->system != MEMSTICK_SYS_SERIAL)
1143                 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1144
1145         card->next_request = h_mspro_block_req_init;
1146         msb->mrq_handler = h_mspro_block_get_ro;
1147         memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1148                           sizeof(struct ms_status_register));
1149         memstick_new_req(card->host);
1150         wait_for_completion(&card->mrq_complete);
1151         if (card->current_mrq.error)
1152                 return card->current_mrq.error;
1153
1154         dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1155
1156         msb->page_size = 512;
1157         rc = mspro_block_read_attributes(card);
1158         if (rc)
1159                 return rc;
1160
1161         dev_dbg(&card->dev, "attributes loaded\n");
1162         return 0;
1163
1164 }
1165
1166 static int mspro_block_init_disk(struct memstick_dev *card)
1167 {
1168         struct mspro_block_data *msb = memstick_get_drvdata(card);
1169         struct memstick_host *host = card->host;
1170         struct mspro_devinfo *dev_info = NULL;
1171         struct mspro_sys_info *sys_info = NULL;
1172         struct mspro_sys_attr *s_attr = NULL;
1173         int rc, disk_id;
1174         u64 limit = BLK_BOUNCE_HIGH;
1175         unsigned long capacity;
1176
1177         if (host->dev.dma_mask && *(host->dev.dma_mask))
1178                 limit = *(host->dev.dma_mask);
1179
1180         for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1181                 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1182
1183                 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1184                         dev_info = s_attr->data;
1185                 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1186                         sys_info = s_attr->data;
1187         }
1188
1189         if (!dev_info || !sys_info)
1190                 return -ENODEV;
1191
1192         msb->cylinders = be16_to_cpu(dev_info->cylinders);
1193         msb->heads = be16_to_cpu(dev_info->heads);
1194         msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1195
1196         msb->page_size = be16_to_cpu(sys_info->unit_size);
1197
1198         if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1199                 return -ENOMEM;
1200
1201         mutex_lock(&mspro_block_disk_lock);
1202         rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1203         mutex_unlock(&mspro_block_disk_lock);
1204
1205         if (rc)
1206                 return rc;
1207
1208         if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
1209                 rc = -ENOSPC;
1210                 goto out_release_id;
1211         }
1212
1213         msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
1214         if (!msb->disk) {
1215                 rc = -ENOMEM;
1216                 goto out_release_id;
1217         }
1218
1219         msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
1220         if (!msb->queue) {
1221                 rc = -ENOMEM;
1222                 goto out_put_disk;
1223         }
1224
1225         msb->queue->queuedata = card;
1226         blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
1227
1228         blk_queue_bounce_limit(msb->queue, limit);
1229         blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1230         blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1231         blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1232         blk_queue_max_segment_size(msb->queue,
1233                                    MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1234
1235         msb->disk->major = major;
1236         msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1237         msb->disk->fops = &ms_block_bdops;
1238         msb->usage_count = 1;
1239         msb->disk->private_data = msb;
1240         msb->disk->queue = msb->queue;
1241         msb->disk->driverfs_dev = &card->dev;
1242
1243         sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1244
1245         blk_queue_logical_block_size(msb->queue, msb->page_size);
1246
1247         capacity = be16_to_cpu(sys_info->user_block_count);
1248         capacity *= be16_to_cpu(sys_info->block_size);
1249         capacity *= msb->page_size >> 9;
1250         set_capacity(msb->disk, capacity);
1251         dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1252
1253         add_disk(msb->disk);
1254         msb->active = 1;
1255         return 0;
1256
1257 out_put_disk:
1258         put_disk(msb->disk);
1259 out_release_id:
1260         mutex_lock(&mspro_block_disk_lock);
1261         idr_remove(&mspro_block_disk_idr, disk_id);
1262         mutex_unlock(&mspro_block_disk_lock);
1263         return rc;
1264 }
1265
1266 static void mspro_block_data_clear(struct mspro_block_data *msb)
1267 {
1268         int cnt;
1269         struct mspro_sys_attr *s_attr;
1270
1271         if (msb->attr_group.attrs) {
1272                 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1273                         s_attr = mspro_from_sysfs_attr(msb->attr_group
1274                                                            .attrs[cnt]);
1275                         kfree(s_attr->data);
1276                         kfree(s_attr);
1277                 }
1278                 kfree(msb->attr_group.attrs);
1279         }
1280
1281         msb->card = NULL;
1282 }
1283
1284 static int mspro_block_check_card(struct memstick_dev *card)
1285 {
1286         struct mspro_block_data *msb = memstick_get_drvdata(card);
1287
1288         return (msb->active == 1);
1289 }
1290
1291 static int mspro_block_probe(struct memstick_dev *card)
1292 {
1293         struct mspro_block_data *msb;
1294         int rc = 0;
1295
1296         msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1297         if (!msb)
1298                 return -ENOMEM;
1299         memstick_set_drvdata(card, msb);
1300         msb->card = card;
1301         spin_lock_init(&msb->q_lock);
1302
1303         rc = mspro_block_init_card(card);
1304
1305         if (rc)
1306                 goto out_free;
1307
1308         rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1309         if (rc)
1310                 goto out_free;
1311
1312         rc = mspro_block_init_disk(card);
1313         if (!rc) {
1314                 card->check = mspro_block_check_card;
1315                 card->stop = mspro_block_stop;
1316                 card->start = mspro_block_start;
1317                 return 0;
1318         }
1319
1320         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1321 out_free:
1322         memstick_set_drvdata(card, NULL);
1323         mspro_block_data_clear(msb);
1324         kfree(msb);
1325         return rc;
1326 }
1327
1328 static void mspro_block_remove(struct memstick_dev *card)
1329 {
1330         struct mspro_block_data *msb = memstick_get_drvdata(card);
1331         unsigned long flags;
1332
1333         del_gendisk(msb->disk);
1334         dev_dbg(&card->dev, "mspro block remove\n");
1335         spin_lock_irqsave(&msb->q_lock, flags);
1336         msb->eject = 1;
1337         blk_start_queue(msb->queue);
1338         spin_unlock_irqrestore(&msb->q_lock, flags);
1339
1340         blk_cleanup_queue(msb->queue);
1341         msb->queue = NULL;
1342
1343         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1344
1345         mutex_lock(&mspro_block_disk_lock);
1346         mspro_block_data_clear(msb);
1347         mutex_unlock(&mspro_block_disk_lock);
1348
1349         mspro_block_disk_release(msb->disk);
1350         memstick_set_drvdata(card, NULL);
1351 }
1352
1353 #ifdef CONFIG_PM
1354
1355 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1356 {
1357         struct mspro_block_data *msb = memstick_get_drvdata(card);
1358         unsigned long flags;
1359
1360         spin_lock_irqsave(&msb->q_lock, flags);
1361         blk_stop_queue(msb->queue);
1362         msb->active = 0;
1363         spin_unlock_irqrestore(&msb->q_lock, flags);
1364
1365         return 0;
1366 }
1367
1368 static int mspro_block_resume(struct memstick_dev *card)
1369 {
1370         struct mspro_block_data *msb = memstick_get_drvdata(card);
1371         unsigned long flags;
1372         int rc = 0;
1373
1374 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1375
1376         struct mspro_block_data *new_msb;
1377         struct memstick_host *host = card->host;
1378         struct mspro_sys_attr *s_attr, *r_attr;
1379         unsigned char cnt;
1380
1381         mutex_lock(&host->lock);
1382         new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1383         if (!new_msb) {
1384                 rc = -ENOMEM;
1385                 goto out_unlock;
1386         }
1387
1388         new_msb->card = card;
1389         memstick_set_drvdata(card, new_msb);
1390         if (mspro_block_init_card(card))
1391                 goto out_free;
1392
1393         for (cnt = 0; new_msb->attr_group.attrs[cnt]
1394                       && msb->attr_group.attrs[cnt]; ++cnt) {
1395                 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1396                 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1397
1398                 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1399                     && r_attr->id == s_attr->id) {
1400                         if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1401                                 break;
1402
1403                         msb->active = 1;
1404                         break;
1405                 }
1406         }
1407
1408 out_free:
1409         memstick_set_drvdata(card, msb);
1410         mspro_block_data_clear(new_msb);
1411         kfree(new_msb);
1412 out_unlock:
1413         mutex_unlock(&host->lock);
1414
1415 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1416
1417         spin_lock_irqsave(&msb->q_lock, flags);
1418         blk_start_queue(msb->queue);
1419         spin_unlock_irqrestore(&msb->q_lock, flags);
1420         return rc;
1421 }
1422
1423 #else
1424
1425 #define mspro_block_suspend NULL
1426 #define mspro_block_resume NULL
1427
1428 #endif /* CONFIG_PM */
1429
1430 static struct memstick_device_id mspro_block_id_tbl[] = {
1431         {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1432          MEMSTICK_CLASS_DUO},
1433         {}
1434 };
1435
1436
1437 static struct memstick_driver mspro_block_driver = {
1438         .driver = {
1439                 .name  = DRIVER_NAME,
1440                 .owner = THIS_MODULE
1441         },
1442         .id_table = mspro_block_id_tbl,
1443         .probe    = mspro_block_probe,
1444         .remove   = mspro_block_remove,
1445         .suspend  = mspro_block_suspend,
1446         .resume   = mspro_block_resume
1447 };
1448
1449 static int __init mspro_block_init(void)
1450 {
1451         int rc = -ENOMEM;
1452
1453         rc = register_blkdev(major, DRIVER_NAME);
1454         if (rc < 0) {
1455                 printk(KERN_ERR DRIVER_NAME ": failed to register "
1456                        "major %d, error %d\n", major, rc);
1457                 return rc;
1458         }
1459         if (!major)
1460                 major = rc;
1461
1462         rc = memstick_register_driver(&mspro_block_driver);
1463         if (rc)
1464                 unregister_blkdev(major, DRIVER_NAME);
1465         return rc;
1466 }
1467
1468 static void __exit mspro_block_exit(void)
1469 {
1470         memstick_unregister_driver(&mspro_block_driver);
1471         unregister_blkdev(major, DRIVER_NAME);
1472         idr_destroy(&mspro_block_disk_idr);
1473 }
1474
1475 module_init(mspro_block_init);
1476 module_exit(mspro_block_exit);
1477
1478 MODULE_LICENSE("GPL");
1479 MODULE_AUTHOR("Alex Dubov");
1480 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1481 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);