a41634699f846e95f1dbd8f8f2d185b215c8679a
[linux-2.6.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 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(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                                   &param, 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
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
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
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
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
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_all(req, -ENODEV);
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
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
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, &param,
868                           sizeof(param));
869         memstick_new_req(host);
870         wait_for_completion(&card->mrq_complete);
871         return card->current_mrq.error;
872 }
873
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  */
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, &param,
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 *)&param, 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
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
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
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
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
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
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
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
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
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
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);