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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Sony MemoryStick Pro storage support
4 *
5 * Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
6 *
7 * Special thanks to Carlos Corbacho for providing various MemoryStick cards
8 * that made this driver possible.
9 */
10
11#include <linux/blk-mq.h>
12#include <linux/idr.h>
13#include <linux/hdreg.h>
14#include <linux/kthread.h>
15#include <linux/delay.h>
16#include <linux/slab.h>
17#include <linux/mutex.h>
18#include <linux/memstick.h>
19#include <linux/module.h>
20
21#define DRIVER_NAME "mspro_block"
22
23static int major;
24module_param(major, int, 0644);
25
26#define MSPRO_BLOCK_MAX_SEGS 32
27#define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
28
29#define MSPRO_BLOCK_SIGNATURE 0xa5c3
30#define MSPRO_BLOCK_MAX_ATTRIBUTES 41
31
32#define MSPRO_BLOCK_PART_SHIFT 3
33
34enum {
35 MSPRO_BLOCK_ID_SYSINFO = 0x10,
36 MSPRO_BLOCK_ID_MODELNAME = 0x15,
37 MSPRO_BLOCK_ID_MBR = 0x20,
38 MSPRO_BLOCK_ID_PBR16 = 0x21,
39 MSPRO_BLOCK_ID_PBR32 = 0x22,
40 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
41 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
42 MSPRO_BLOCK_ID_DEVINFO = 0x30
43};
44
45struct mspro_sys_attr {
46 size_t size;
47 void *data;
48 unsigned char id;
49 char name[32];
50 struct device_attribute dev_attr;
51};
52
53struct mspro_attr_entry {
54 __be32 address;
55 __be32 size;
56 unsigned char id;
57 unsigned char reserved[3];
58} __attribute__((packed));
59
60struct mspro_attribute {
61 __be16 signature;
62 unsigned short version;
63 unsigned char count;
64 unsigned char reserved[11];
65 struct mspro_attr_entry entries[];
66} __attribute__((packed));
67
68struct mspro_sys_info {
69 unsigned char class;
70 unsigned char reserved0;
71 __be16 block_size;
72 __be16 block_count;
73 __be16 user_block_count;
74 __be16 page_size;
75 unsigned char reserved1[2];
76 unsigned char assembly_date[8];
77 __be32 serial_number;
78 unsigned char assembly_maker_code;
79 unsigned char assembly_model_code[3];
80 __be16 memory_maker_code;
81 __be16 memory_model_code;
82 unsigned char reserved2[4];
83 unsigned char vcc;
84 unsigned char vpp;
85 __be16 controller_number;
86 __be16 controller_function;
87 __be16 start_sector;
88 __be16 unit_size;
89 unsigned char ms_sub_class;
90 unsigned char reserved3[4];
91 unsigned char interface_type;
92 __be16 controller_code;
93 unsigned char format_type;
94 unsigned char reserved4;
95 unsigned char device_type;
96 unsigned char reserved5[7];
97 unsigned char mspro_id[16];
98 unsigned char reserved6[16];
99} __attribute__((packed));
100
101struct mspro_mbr {
102 unsigned char boot_partition;
103 unsigned char start_head;
104 unsigned char start_sector;
105 unsigned char start_cylinder;
106 unsigned char partition_type;
107 unsigned char end_head;
108 unsigned char end_sector;
109 unsigned char end_cylinder;
110 unsigned int start_sectors;
111 unsigned int sectors_per_partition;
112} __attribute__((packed));
113
114struct mspro_specfile {
115 char name[8];
116 char ext[3];
117 unsigned char attr;
118 unsigned char reserved[10];
119 unsigned short time;
120 unsigned short date;
121 unsigned short cluster;
122 unsigned int size;
123} __attribute__((packed));
124
125struct mspro_devinfo {
126 __be16 cylinders;
127 __be16 heads;
128 __be16 bytes_per_track;
129 __be16 bytes_per_sector;
130 __be16 sectors_per_track;
131 unsigned char reserved[6];
132} __attribute__((packed));
133
134struct mspro_block_data {
135 struct memstick_dev *card;
136 unsigned int caps;
137 struct gendisk *disk;
138 struct request_queue *queue;
139 struct request *block_req;
140 struct blk_mq_tag_set tag_set;
141 spinlock_t q_lock;
142
143 unsigned short page_size;
144 unsigned short cylinders;
145 unsigned short heads;
146 unsigned short sectors_per_track;
147
148 unsigned char system;
149 unsigned char read_only:1,
150 eject:1,
151 data_dir:1,
152 active:1;
153 unsigned char transfer_cmd;
154
155 int (*mrq_handler)(struct memstick_dev *card,
156 struct memstick_request **mrq);
157
158
159 /* Default request setup function for data access method preferred by
160 * this host instance.
161 */
162 void (*setup_transfer)(struct memstick_dev *card,
163 u64 offset, size_t length);
164
165 struct attribute_group attr_group;
166
167 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
168 unsigned int seg_count;
169 unsigned int current_seg;
170 unsigned int current_page;
171};
172
173static DEFINE_IDR(mspro_block_disk_idr);
174static DEFINE_MUTEX(mspro_block_disk_lock);
175
176static int mspro_block_complete_req(struct memstick_dev *card, int error);
177
178/*** Block device ***/
179
180static void mspro_block_bd_free_disk(struct gendisk *disk)
181{
182 struct mspro_block_data *msb = disk->private_data;
183 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
184
185 mutex_lock(&mspro_block_disk_lock);
186 idr_remove(&mspro_block_disk_idr, disk_id);
187 mutex_unlock(&mspro_block_disk_lock);
188
189 kfree(msb);
190}
191
192static int mspro_block_bd_getgeo(struct block_device *bdev,
193 struct hd_geometry *geo)
194{
195 struct mspro_block_data *msb = bdev->bd_disk->private_data;
196
197 geo->heads = msb->heads;
198 geo->sectors = msb->sectors_per_track;
199 geo->cylinders = msb->cylinders;
200
201 return 0;
202}
203
204static const struct block_device_operations ms_block_bdops = {
205 .owner = THIS_MODULE,
206 .getgeo = mspro_block_bd_getgeo,
207 .free_disk = mspro_block_bd_free_disk,
208};
209
210/*** Information ***/
211
212static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
213{
214 struct device_attribute *dev_attr
215 = container_of(attr, struct device_attribute, attr);
216 return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
217}
218
219static const char *mspro_block_attr_name(unsigned char tag)
220{
221 switch (tag) {
222 case MSPRO_BLOCK_ID_SYSINFO:
223 return "attr_sysinfo";
224 case MSPRO_BLOCK_ID_MODELNAME:
225 return "attr_modelname";
226 case MSPRO_BLOCK_ID_MBR:
227 return "attr_mbr";
228 case MSPRO_BLOCK_ID_PBR16:
229 return "attr_pbr16";
230 case MSPRO_BLOCK_ID_PBR32:
231 return "attr_pbr32";
232 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
233 return "attr_specfilevalues1";
234 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
235 return "attr_specfilevalues2";
236 case MSPRO_BLOCK_ID_DEVINFO:
237 return "attr_devinfo";
238 default:
239 return NULL;
240 }
241}
242
243typedef ssize_t (*sysfs_show_t)(struct device *dev,
244 struct device_attribute *attr,
245 char *buffer);
246
247static ssize_t mspro_block_attr_show_default(struct device *dev,
248 struct device_attribute *attr,
249 char *buffer)
250{
251 struct mspro_sys_attr *s_attr = container_of(attr,
252 struct mspro_sys_attr,
253 dev_attr);
254
255 ssize_t cnt, rc = 0;
256
257 for (cnt = 0; cnt < s_attr->size; cnt++) {
258 if (cnt && !(cnt % 16)) {
259 if (PAGE_SIZE - rc)
260 buffer[rc++] = '\n';
261 }
262
263 rc += sysfs_emit_at(buffer, rc, "%02x ",
264 ((unsigned char *)s_attr->data)[cnt]);
265 }
266 return rc;
267}
268
269static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
270 struct device_attribute *attr,
271 char *buffer)
272{
273 struct mspro_sys_attr *x_attr = container_of(attr,
274 struct mspro_sys_attr,
275 dev_attr);
276 struct mspro_sys_info *x_sys = x_attr->data;
277 ssize_t rc = 0;
278 int date_tz = 0, date_tz_f = 0;
279
280 if (x_sys->assembly_date[0] > 0x80U) {
281 date_tz = (~x_sys->assembly_date[0]) + 1;
282 date_tz_f = date_tz & 3;
283 date_tz >>= 2;
284 date_tz = -date_tz;
285 date_tz_f *= 15;
286 } else if (x_sys->assembly_date[0] < 0x80U) {
287 date_tz = x_sys->assembly_date[0];
288 date_tz_f = date_tz & 3;
289 date_tz >>= 2;
290 date_tz_f *= 15;
291 }
292
293 rc += sysfs_emit_at(buffer, rc, "class: %x\n", x_sys->class);
294 rc += sysfs_emit_at(buffer, rc, "block size: %x\n", be16_to_cpu(x_sys->block_size));
295 rc += sysfs_emit_at(buffer, rc, "block count: %x\n", be16_to_cpu(x_sys->block_count));
296 rc += sysfs_emit_at(buffer, rc, "user block count: %x\n",
297 be16_to_cpu(x_sys->user_block_count));
298 rc += sysfs_emit_at(buffer, rc, "page size: %x\n", be16_to_cpu(x_sys->page_size));
299 rc += sysfs_emit_at(buffer, rc, "assembly date: GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
300 date_tz, date_tz_f,
301 be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
302 x_sys->assembly_date[3], x_sys->assembly_date[4],
303 x_sys->assembly_date[5], x_sys->assembly_date[6],
304 x_sys->assembly_date[7]);
305 rc += sysfs_emit_at(buffer, rc, "serial number: %x\n", be32_to_cpu(x_sys->serial_number));
306 rc += sysfs_emit_at(buffer, rc, "assembly maker code: %x\n", x_sys->assembly_maker_code);
307 rc += sysfs_emit_at(buffer, rc, "assembly model code: %02x%02x%02x\n",
308 x_sys->assembly_model_code[0],
309 x_sys->assembly_model_code[1],
310 x_sys->assembly_model_code[2]);
311 rc += sysfs_emit_at(buffer, rc, "memory maker code: %x\n",
312 be16_to_cpu(x_sys->memory_maker_code));
313 rc += sysfs_emit_at(buffer, rc, "memory model code: %x\n",
314 be16_to_cpu(x_sys->memory_model_code));
315 rc += sysfs_emit_at(buffer, rc, "vcc: %x\n", x_sys->vcc);
316 rc += sysfs_emit_at(buffer, rc, "vpp: %x\n", x_sys->vpp);
317 rc += sysfs_emit_at(buffer, rc, "controller number: %x\n",
318 be16_to_cpu(x_sys->controller_number));
319 rc += sysfs_emit_at(buffer, rc, "controller function: %x\n",
320 be16_to_cpu(x_sys->controller_function));
321 rc += sysfs_emit_at(buffer, rc, "start sector: %x\n", be16_to_cpu(x_sys->start_sector));
322 rc += sysfs_emit_at(buffer, rc, "unit size: %x\n", be16_to_cpu(x_sys->unit_size));
323 rc += sysfs_emit_at(buffer, rc, "sub class: %x\n", x_sys->ms_sub_class);
324 rc += sysfs_emit_at(buffer, rc, "interface type: %x\n", x_sys->interface_type);
325 rc += sysfs_emit_at(buffer, rc, "controller code: %x\n",
326 be16_to_cpu(x_sys->controller_code));
327 rc += sysfs_emit_at(buffer, rc, "format type: %x\n", x_sys->format_type);
328 rc += sysfs_emit_at(buffer, rc, "device type: %x\n", x_sys->device_type);
329 rc += sysfs_emit_at(buffer, rc, "mspro id: %s\n", x_sys->mspro_id);
330 return rc;
331}
332
333static ssize_t mspro_block_attr_show_modelname(struct device *dev,
334 struct device_attribute *attr,
335 char *buffer)
336{
337 struct mspro_sys_attr *s_attr = container_of(attr,
338 struct mspro_sys_attr,
339 dev_attr);
340
341 return sysfs_emit(buffer, "%s", (char *)s_attr->data);
342}
343
344static ssize_t mspro_block_attr_show_mbr(struct device *dev,
345 struct device_attribute *attr,
346 char *buffer)
347{
348 struct mspro_sys_attr *x_attr = container_of(attr,
349 struct mspro_sys_attr,
350 dev_attr);
351 struct mspro_mbr *x_mbr = x_attr->data;
352 ssize_t rc = 0;
353
354 rc += sysfs_emit_at(buffer, rc, "boot partition: %x\n", x_mbr->boot_partition);
355 rc += sysfs_emit_at(buffer, rc, "start head: %x\n", x_mbr->start_head);
356 rc += sysfs_emit_at(buffer, rc, "start sector: %x\n", x_mbr->start_sector);
357 rc += sysfs_emit_at(buffer, rc, "start cylinder: %x\n", x_mbr->start_cylinder);
358 rc += sysfs_emit_at(buffer, rc, "partition type: %x\n", x_mbr->partition_type);
359 rc += sysfs_emit_at(buffer, rc, "end head: %x\n", x_mbr->end_head);
360 rc += sysfs_emit_at(buffer, rc, "end sector: %x\n", x_mbr->end_sector);
361 rc += sysfs_emit_at(buffer, rc, "end cylinder: %x\n", x_mbr->end_cylinder);
362 rc += sysfs_emit_at(buffer, rc, "start sectors: %x\n", x_mbr->start_sectors);
363 rc += sysfs_emit_at(buffer, rc, "sectors per partition: %x\n",
364 x_mbr->sectors_per_partition);
365 return rc;
366}
367
368static ssize_t mspro_block_attr_show_specfile(struct device *dev,
369 struct device_attribute *attr,
370 char *buffer)
371{
372 struct mspro_sys_attr *x_attr = container_of(attr,
373 struct mspro_sys_attr,
374 dev_attr);
375 struct mspro_specfile *x_spfile = x_attr->data;
376 char name[9], ext[4];
377 ssize_t rc = 0;
378
379 memcpy(name, x_spfile->name, 8);
380 name[8] = 0;
381 memcpy(ext, x_spfile->ext, 3);
382 ext[3] = 0;
383
384 rc += sysfs_emit_at(buffer, rc, "name: %s\n", name);
385 rc += sysfs_emit_at(buffer, rc, "ext: %s\n", ext);
386 rc += sysfs_emit_at(buffer, rc, "attribute: %x\n", x_spfile->attr);
387 rc += sysfs_emit_at(buffer, rc, "time: %d:%d:%d\n",
388 x_spfile->time >> 11,
389 (x_spfile->time >> 5) & 0x3f,
390 (x_spfile->time & 0x1f) * 2);
391 rc += sysfs_emit_at(buffer, rc, "date: %d-%d-%d\n",
392 (x_spfile->date >> 9) + 1980,
393 (x_spfile->date >> 5) & 0xf,
394 x_spfile->date & 0x1f);
395 rc += sysfs_emit_at(buffer, rc, "start cluster: %x\n", x_spfile->cluster);
396 rc += sysfs_emit_at(buffer, rc, "size: %x\n", x_spfile->size);
397 return rc;
398}
399
400static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
401 struct device_attribute *attr,
402 char *buffer)
403{
404 struct mspro_sys_attr *x_attr = container_of(attr,
405 struct mspro_sys_attr,
406 dev_attr);
407 struct mspro_devinfo *x_devinfo = x_attr->data;
408 ssize_t rc = 0;
409
410 rc += sysfs_emit_at(buffer, rc, "cylinders: %x\n", be16_to_cpu(x_devinfo->cylinders));
411 rc += sysfs_emit_at(buffer, rc, "heads: %x\n", be16_to_cpu(x_devinfo->heads));
412 rc += sysfs_emit_at(buffer, rc, "bytes per track: %x\n",
413 be16_to_cpu(x_devinfo->bytes_per_track));
414 rc += sysfs_emit_at(buffer, rc, "bytes per sector: %x\n",
415 be16_to_cpu(x_devinfo->bytes_per_sector));
416 rc += sysfs_emit_at(buffer, rc, "sectors per track: %x\n",
417 be16_to_cpu(x_devinfo->sectors_per_track));
418 return rc;
419}
420
421static sysfs_show_t mspro_block_attr_show(unsigned char tag)
422{
423 switch (tag) {
424 case MSPRO_BLOCK_ID_SYSINFO:
425 return mspro_block_attr_show_sysinfo;
426 case MSPRO_BLOCK_ID_MODELNAME:
427 return mspro_block_attr_show_modelname;
428 case MSPRO_BLOCK_ID_MBR:
429 return mspro_block_attr_show_mbr;
430 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
431 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
432 return mspro_block_attr_show_specfile;
433 case MSPRO_BLOCK_ID_DEVINFO:
434 return mspro_block_attr_show_devinfo;
435 default:
436 return mspro_block_attr_show_default;
437 }
438}
439
440/*** Protocol handlers ***/
441
442/*
443 * Functions prefixed with "h_" are protocol callbacks. They can be called from
444 * interrupt context. Return value of 0 means that request processing is still
445 * ongoing, while special error value of -EAGAIN means that current request is
446 * finished (and request processor should come back some time later).
447 */
448
449static int h_mspro_block_req_init(struct memstick_dev *card,
450 struct memstick_request **mrq)
451{
452 struct mspro_block_data *msb = memstick_get_drvdata(card);
453
454 *mrq = &card->current_mrq;
455 card->next_request = msb->mrq_handler;
456 return 0;
457}
458
459static int h_mspro_block_default(struct memstick_dev *card,
460 struct memstick_request **mrq)
461{
462 return mspro_block_complete_req(card, (*mrq)->error);
463}
464
465static int h_mspro_block_default_bad(struct memstick_dev *card,
466 struct memstick_request **mrq)
467{
468 return -ENXIO;
469}
470
471static int h_mspro_block_get_ro(struct memstick_dev *card,
472 struct memstick_request **mrq)
473{
474 struct mspro_block_data *msb = memstick_get_drvdata(card);
475
476 if (!(*mrq)->error) {
477 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
478 & MEMSTICK_STATUS0_WP)
479 msb->read_only = 1;
480 else
481 msb->read_only = 0;
482 }
483
484 return mspro_block_complete_req(card, (*mrq)->error);
485}
486
487static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
488 struct memstick_request **mrq)
489{
490 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
491
492 if (!(*mrq)->error) {
493 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
494 (*mrq)->error = -EFAULT;
495 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
496 return 0;
497 }
498
499 return mspro_block_complete_req(card, (*mrq)->error);
500}
501
502static int h_mspro_block_transfer_data(struct memstick_dev *card,
503 struct memstick_request **mrq)
504{
505 struct mspro_block_data *msb = memstick_get_drvdata(card);
506 unsigned char t_val = 0;
507 struct scatterlist t_sg = { 0 };
508 size_t t_offset;
509
510 if ((*mrq)->error)
511 return mspro_block_complete_req(card, (*mrq)->error);
512
513 switch ((*mrq)->tpc) {
514 case MS_TPC_WRITE_REG:
515 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
516 (*mrq)->need_card_int = 1;
517 return 0;
518 case MS_TPC_SET_CMD:
519 t_val = (*mrq)->int_reg;
520 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
521 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
522 goto has_int_reg;
523 return 0;
524 case MS_TPC_GET_INT:
525 t_val = (*mrq)->data[0];
526has_int_reg:
527 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
528 t_val = MSPRO_CMD_STOP;
529 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
530 card->next_request = h_mspro_block_default;
531 return 0;
532 }
533
534 if (msb->current_page
535 == (msb->req_sg[msb->current_seg].length
536 / msb->page_size)) {
537 msb->current_page = 0;
538 msb->current_seg++;
539
540 if (msb->current_seg == msb->seg_count) {
541 if (t_val & MEMSTICK_INT_CED) {
542 return mspro_block_complete_req(card,
543 0);
544 } else {
545 card->next_request
546 = h_mspro_block_wait_for_ced;
547 memstick_init_req(*mrq, MS_TPC_GET_INT,
548 NULL, 1);
549 return 0;
550 }
551 }
552 }
553
554 if (!(t_val & MEMSTICK_INT_BREQ)) {
555 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
556 return 0;
557 }
558
559 t_offset = msb->req_sg[msb->current_seg].offset;
560 t_offset += msb->current_page * msb->page_size;
561
562 sg_set_page(&t_sg,
563 nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
564 t_offset >> PAGE_SHIFT),
565 msb->page_size, offset_in_page(t_offset));
566
567 memstick_init_req_sg(*mrq, msb->data_dir == READ
568 ? MS_TPC_READ_LONG_DATA
569 : MS_TPC_WRITE_LONG_DATA,
570 &t_sg);
571 (*mrq)->need_card_int = 1;
572 return 0;
573 case MS_TPC_READ_LONG_DATA:
574 case MS_TPC_WRITE_LONG_DATA:
575 msb->current_page++;
576 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
577 t_val = (*mrq)->int_reg;
578 goto has_int_reg;
579 } else {
580 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
581 return 0;
582 }
583
584 default:
585 BUG();
586 }
587}
588
589/*** Transfer setup functions for different access methods. ***/
590
591/** Setup data transfer request for SET_CMD TPC with arguments in card
592 * registers.
593 *
594 * @card Current media instance
595 * @offset Target data offset in bytes
596 * @length Required transfer length in bytes.
597 */
598static void h_mspro_block_setup_cmd(struct memstick_dev *card, u64 offset,
599 size_t length)
600{
601 struct mspro_block_data *msb = memstick_get_drvdata(card);
602 struct mspro_param_register param = {
603 .system = msb->system,
604 .data_count = cpu_to_be16((uint16_t)(length / msb->page_size)),
605 /* ISO C90 warning precludes direct initialization for now. */
606 .data_address = 0,
607 .tpc_param = 0
608 };
609
610 do_div(offset, msb->page_size);
611 param.data_address = cpu_to_be32((uint32_t)offset);
612
613 card->next_request = h_mspro_block_req_init;
614 msb->mrq_handler = h_mspro_block_transfer_data;
615 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
616 ¶m, sizeof(param));
617}
618
619/*** Data transfer ***/
620
621static int mspro_block_issue_req(struct memstick_dev *card)
622{
623 struct mspro_block_data *msb = memstick_get_drvdata(card);
624 u64 t_off;
625 unsigned int count;
626
627 while (true) {
628 msb->current_page = 0;
629 msb->current_seg = 0;
630 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
631 msb->block_req,
632 msb->req_sg);
633
634 if (!msb->seg_count) {
635 unsigned int bytes = blk_rq_cur_bytes(msb->block_req);
636 bool chunk;
637
638 chunk = blk_update_request(msb->block_req,
639 BLK_STS_RESOURCE,
640 bytes);
641 if (chunk)
642 continue;
643 __blk_mq_end_request(msb->block_req,
644 BLK_STS_RESOURCE);
645 msb->block_req = NULL;
646 return -EAGAIN;
647 }
648
649 t_off = blk_rq_pos(msb->block_req);
650 t_off <<= 9;
651 count = blk_rq_bytes(msb->block_req);
652
653 msb->setup_transfer(card, t_off, count);
654
655 msb->data_dir = rq_data_dir(msb->block_req);
656 msb->transfer_cmd = msb->data_dir == READ
657 ? MSPRO_CMD_READ_DATA
658 : MSPRO_CMD_WRITE_DATA;
659
660 memstick_new_req(card->host);
661 return 0;
662 }
663}
664
665static int mspro_block_complete_req(struct memstick_dev *card, int error)
666{
667 struct mspro_block_data *msb = memstick_get_drvdata(card);
668 int cnt;
669 bool chunk;
670 unsigned int t_len = 0;
671 unsigned long flags;
672
673 spin_lock_irqsave(&msb->q_lock, flags);
674 dev_dbg(&card->dev, "complete %d, %d\n", msb->block_req ? 1 : 0,
675 error);
676
677 if (msb->block_req) {
678 /* Nothing to do - not really an error */
679 if (error == -EAGAIN)
680 error = 0;
681
682 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
683 if (msb->data_dir == READ) {
684 for (cnt = 0; cnt < msb->current_seg; cnt++) {
685 t_len += msb->req_sg[cnt].length
686 / msb->page_size;
687
688 if (msb->current_page)
689 t_len += msb->current_page - 1;
690
691 t_len *= msb->page_size;
692 }
693 }
694 } else
695 t_len = blk_rq_bytes(msb->block_req);
696
697 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
698
699 if (error && !t_len)
700 t_len = blk_rq_cur_bytes(msb->block_req);
701
702 chunk = blk_update_request(msb->block_req,
703 errno_to_blk_status(error), t_len);
704 if (chunk) {
705 error = mspro_block_issue_req(card);
706 if (!error)
707 goto out;
708 } else {
709 __blk_mq_end_request(msb->block_req,
710 errno_to_blk_status(error));
711 msb->block_req = NULL;
712 }
713 } else {
714 if (!error)
715 error = -EAGAIN;
716 }
717
718 card->next_request = h_mspro_block_default_bad;
719 complete_all(&card->mrq_complete);
720out:
721 spin_unlock_irqrestore(&msb->q_lock, flags);
722 return error;
723}
724
725static void mspro_block_stop(struct memstick_dev *card)
726{
727 struct mspro_block_data *msb = memstick_get_drvdata(card);
728 int rc = 0;
729 unsigned long flags;
730
731 while (1) {
732 spin_lock_irqsave(&msb->q_lock, flags);
733 if (!msb->block_req) {
734 blk_mq_stop_hw_queues(msb->queue);
735 rc = 1;
736 }
737 spin_unlock_irqrestore(&msb->q_lock, flags);
738
739 if (rc)
740 break;
741
742 wait_for_completion(&card->mrq_complete);
743 }
744}
745
746static void mspro_block_start(struct memstick_dev *card)
747{
748 struct mspro_block_data *msb = memstick_get_drvdata(card);
749
750 blk_mq_start_hw_queues(msb->queue);
751}
752
753static blk_status_t mspro_queue_rq(struct blk_mq_hw_ctx *hctx,
754 const struct blk_mq_queue_data *bd)
755{
756 struct memstick_dev *card = hctx->queue->queuedata;
757 struct mspro_block_data *msb = memstick_get_drvdata(card);
758
759 spin_lock_irq(&msb->q_lock);
760
761 if (msb->block_req) {
762 spin_unlock_irq(&msb->q_lock);
763 return BLK_STS_DEV_RESOURCE;
764 }
765
766 if (msb->eject) {
767 spin_unlock_irq(&msb->q_lock);
768 blk_mq_start_request(bd->rq);
769 return BLK_STS_IOERR;
770 }
771
772 msb->block_req = bd->rq;
773 blk_mq_start_request(bd->rq);
774
775 if (mspro_block_issue_req(card))
776 msb->block_req = NULL;
777
778 spin_unlock_irq(&msb->q_lock);
779 return BLK_STS_OK;
780}
781
782/*** Initialization ***/
783
784static int mspro_block_wait_for_ced(struct memstick_dev *card)
785{
786 struct mspro_block_data *msb = memstick_get_drvdata(card);
787
788 card->next_request = h_mspro_block_req_init;
789 msb->mrq_handler = h_mspro_block_wait_for_ced;
790 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
791 memstick_new_req(card->host);
792 wait_for_completion(&card->mrq_complete);
793 return card->current_mrq.error;
794}
795
796static int mspro_block_set_interface(struct memstick_dev *card,
797 unsigned char sys_reg)
798{
799 struct memstick_host *host = card->host;
800 struct mspro_block_data *msb = memstick_get_drvdata(card);
801 struct mspro_param_register param = {
802 .system = sys_reg,
803 .data_count = 0,
804 .data_address = 0,
805 .tpc_param = 0
806 };
807
808 card->next_request = h_mspro_block_req_init;
809 msb->mrq_handler = h_mspro_block_default;
810 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m,
811 sizeof(param));
812 memstick_new_req(host);
813 wait_for_completion(&card->mrq_complete);
814 return card->current_mrq.error;
815}
816
817static int mspro_block_switch_interface(struct memstick_dev *card)
818{
819 struct memstick_host *host = card->host;
820 struct mspro_block_data *msb = memstick_get_drvdata(card);
821 int rc = 0;
822
823try_again:
824 if (msb->caps & MEMSTICK_CAP_PAR4)
825 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
826 else
827 return 0;
828
829 if (rc) {
830 printk(KERN_WARNING
831 "%s: could not switch to 4-bit mode, error %d\n",
832 dev_name(&card->dev), rc);
833 return 0;
834 }
835
836 msb->system = MEMSTICK_SYS_PAR4;
837 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
838 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
839 dev_name(&card->dev));
840
841 if (msb->caps & MEMSTICK_CAP_PAR8) {
842 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
843
844 if (!rc) {
845 msb->system = MEMSTICK_SYS_PAR8;
846 host->set_param(host, MEMSTICK_INTERFACE,
847 MEMSTICK_PAR8);
848 printk(KERN_INFO
849 "%s: switching to 8-bit parallel mode\n",
850 dev_name(&card->dev));
851 } else
852 printk(KERN_WARNING
853 "%s: could not switch to 8-bit mode, error %d\n",
854 dev_name(&card->dev), rc);
855 }
856
857 card->next_request = h_mspro_block_req_init;
858 msb->mrq_handler = h_mspro_block_default;
859 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
860 memstick_new_req(card->host);
861 wait_for_completion(&card->mrq_complete);
862 rc = card->current_mrq.error;
863
864 if (rc) {
865 printk(KERN_WARNING
866 "%s: interface error, trying to fall back to serial\n",
867 dev_name(&card->dev));
868 msb->system = MEMSTICK_SYS_SERIAL;
869 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
870 msleep(10);
871 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
872 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
873
874 rc = memstick_set_rw_addr(card);
875 if (!rc)
876 rc = mspro_block_set_interface(card, msb->system);
877
878 if (!rc) {
879 msleep(150);
880 rc = mspro_block_wait_for_ced(card);
881 if (rc)
882 return rc;
883
884 if (msb->caps & MEMSTICK_CAP_PAR8) {
885 msb->caps &= ~MEMSTICK_CAP_PAR8;
886 goto try_again;
887 }
888 }
889 }
890 return rc;
891}
892
893/* Memory allocated for attributes by this function should be freed by
894 * mspro_block_data_clear, no matter if the initialization process succeeded
895 * or failed.
896 */
897static int mspro_block_read_attributes(struct memstick_dev *card)
898{
899 struct mspro_block_data *msb = memstick_get_drvdata(card);
900 struct mspro_attribute *attr = NULL;
901 struct mspro_sys_attr *s_attr = NULL;
902 unsigned char *buffer = NULL;
903 int cnt, rc, attr_count;
904 /* While normally physical device offsets, represented here by
905 * attr_offset and attr_len will be of large numeric types, we can be
906 * sure, that attributes are close enough to the beginning of the
907 * device, to save ourselves some trouble.
908 */
909 unsigned int addr, attr_offset = 0, attr_len = msb->page_size;
910
911 attr = kmalloc(msb->page_size, GFP_KERNEL);
912 if (!attr)
913 return -ENOMEM;
914
915 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
916 msb->seg_count = 1;
917 msb->current_seg = 0;
918 msb->current_page = 0;
919 msb->data_dir = READ;
920 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
921
922 msb->setup_transfer(card, attr_offset, attr_len);
923
924 memstick_new_req(card->host);
925 wait_for_completion(&card->mrq_complete);
926 if (card->current_mrq.error) {
927 rc = card->current_mrq.error;
928 goto out_free_attr;
929 }
930
931 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
932 printk(KERN_ERR "%s: unrecognized device signature %x\n",
933 dev_name(&card->dev), be16_to_cpu(attr->signature));
934 rc = -ENODEV;
935 goto out_free_attr;
936 }
937
938 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
939 printk(KERN_WARNING "%s: way too many attribute entries\n",
940 dev_name(&card->dev));
941 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
942 } else
943 attr_count = attr->count;
944
945 msb->attr_group.attrs = kcalloc(attr_count + 1,
946 sizeof(*msb->attr_group.attrs),
947 GFP_KERNEL);
948 if (!msb->attr_group.attrs) {
949 rc = -ENOMEM;
950 goto out_free_attr;
951 }
952 msb->attr_group.name = "media_attributes";
953
954 buffer = kmemdup(attr, attr_len, GFP_KERNEL);
955 if (!buffer) {
956 rc = -ENOMEM;
957 goto out_free_attr;
958 }
959
960 for (cnt = 0; cnt < attr_count; ++cnt) {
961 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
962 if (!s_attr) {
963 rc = -ENOMEM;
964 goto out_free_buffer;
965 }
966
967 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
968 addr = be32_to_cpu(attr->entries[cnt].address);
969 s_attr->size = be32_to_cpu(attr->entries[cnt].size);
970 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
971 "size %zx\n", cnt, attr->entries[cnt].id, addr,
972 s_attr->size);
973 s_attr->id = attr->entries[cnt].id;
974 if (mspro_block_attr_name(s_attr->id))
975 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
976 mspro_block_attr_name(attr->entries[cnt].id));
977 else
978 snprintf(s_attr->name, sizeof(s_attr->name),
979 "attr_x%02x", attr->entries[cnt].id);
980
981 sysfs_attr_init(&s_attr->dev_attr.attr);
982 s_attr->dev_attr.attr.name = s_attr->name;
983 s_attr->dev_attr.attr.mode = S_IRUGO;
984 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
985
986 if (!s_attr->size)
987 continue;
988
989 s_attr->data = kmalloc(s_attr->size, GFP_KERNEL);
990 if (!s_attr->data) {
991 rc = -ENOMEM;
992 goto out_free_buffer;
993 }
994
995 if (((addr / msb->page_size) == (attr_offset / msb->page_size))
996 && (((addr + s_attr->size - 1) / msb->page_size)
997 == (attr_offset / msb->page_size))) {
998 memcpy(s_attr->data, buffer + addr % msb->page_size,
999 s_attr->size);
1000 continue;
1001 }
1002
1003 attr_offset = (addr / msb->page_size) * msb->page_size;
1004
1005 if ((attr_offset + attr_len) < (addr + s_attr->size)) {
1006 kfree(buffer);
1007 attr_len = (((addr + s_attr->size) / msb->page_size)
1008 + 1 ) * msb->page_size - attr_offset;
1009 buffer = kmalloc(attr_len, GFP_KERNEL);
1010 if (!buffer) {
1011 rc = -ENOMEM;
1012 goto out_free_attr;
1013 }
1014 }
1015
1016 sg_init_one(&msb->req_sg[0], buffer, attr_len);
1017 msb->seg_count = 1;
1018 msb->current_seg = 0;
1019 msb->current_page = 0;
1020 msb->data_dir = READ;
1021 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1022
1023 dev_dbg(&card->dev, "reading attribute range %x, %x\n",
1024 attr_offset, attr_len);
1025
1026 msb->setup_transfer(card, attr_offset, attr_len);
1027 memstick_new_req(card->host);
1028 wait_for_completion(&card->mrq_complete);
1029 if (card->current_mrq.error) {
1030 rc = card->current_mrq.error;
1031 goto out_free_buffer;
1032 }
1033
1034 memcpy(s_attr->data, buffer + addr % msb->page_size,
1035 s_attr->size);
1036 }
1037
1038 rc = 0;
1039out_free_buffer:
1040 kfree(buffer);
1041out_free_attr:
1042 kfree(attr);
1043 return rc;
1044}
1045
1046static int mspro_block_init_card(struct memstick_dev *card)
1047{
1048 struct mspro_block_data *msb = memstick_get_drvdata(card);
1049 struct memstick_host *host = card->host;
1050 int rc = 0;
1051
1052 msb->system = MEMSTICK_SYS_SERIAL;
1053 msb->setup_transfer = h_mspro_block_setup_cmd;
1054
1055 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1056 card->reg_addr.r_length = sizeof(struct ms_status_register);
1057 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1058 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1059
1060 if (memstick_set_rw_addr(card))
1061 return -EIO;
1062
1063 msb->caps = host->caps;
1064
1065 msleep(150);
1066 rc = mspro_block_wait_for_ced(card);
1067 if (rc)
1068 return rc;
1069
1070 rc = mspro_block_switch_interface(card);
1071 if (rc)
1072 return rc;
1073
1074 dev_dbg(&card->dev, "card activated\n");
1075 if (msb->system != MEMSTICK_SYS_SERIAL)
1076 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1077
1078 card->next_request = h_mspro_block_req_init;
1079 msb->mrq_handler = h_mspro_block_get_ro;
1080 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1081 sizeof(struct ms_status_register));
1082 memstick_new_req(card->host);
1083 wait_for_completion(&card->mrq_complete);
1084 if (card->current_mrq.error)
1085 return card->current_mrq.error;
1086
1087 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1088
1089 msb->page_size = 512;
1090 rc = mspro_block_read_attributes(card);
1091 if (rc)
1092 return rc;
1093
1094 dev_dbg(&card->dev, "attributes loaded\n");
1095 return 0;
1096
1097}
1098
1099static const struct blk_mq_ops mspro_mq_ops = {
1100 .queue_rq = mspro_queue_rq,
1101};
1102
1103static int mspro_block_init_disk(struct memstick_dev *card)
1104{
1105 struct mspro_block_data *msb = memstick_get_drvdata(card);
1106 struct mspro_devinfo *dev_info = NULL;
1107 struct mspro_sys_info *sys_info = NULL;
1108 struct mspro_sys_attr *s_attr = NULL;
1109 int rc, disk_id;
1110 unsigned long capacity;
1111
1112 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1113 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1114
1115 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1116 dev_info = s_attr->data;
1117 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1118 sys_info = s_attr->data;
1119 }
1120
1121 if (!dev_info || !sys_info)
1122 return -ENODEV;
1123
1124 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1125 msb->heads = be16_to_cpu(dev_info->heads);
1126 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1127
1128 msb->page_size = be16_to_cpu(sys_info->unit_size);
1129
1130 mutex_lock(&mspro_block_disk_lock);
1131 disk_id = idr_alloc(&mspro_block_disk_idr, card, 0, 256, GFP_KERNEL);
1132 mutex_unlock(&mspro_block_disk_lock);
1133 if (disk_id < 0)
1134 return disk_id;
1135
1136 rc = blk_mq_alloc_sq_tag_set(&msb->tag_set, &mspro_mq_ops, 2,
1137 BLK_MQ_F_SHOULD_MERGE);
1138 if (rc)
1139 goto out_release_id;
1140
1141 msb->disk = blk_mq_alloc_disk(&msb->tag_set, card);
1142 if (IS_ERR(msb->disk)) {
1143 rc = PTR_ERR(msb->disk);
1144 goto out_free_tag_set;
1145 }
1146 msb->queue = msb->disk->queue;
1147
1148 blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1149 blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1150 blk_queue_max_segment_size(msb->queue,
1151 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1152
1153 msb->disk->major = major;
1154 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1155 msb->disk->minors = 1 << MSPRO_BLOCK_PART_SHIFT;
1156 msb->disk->fops = &ms_block_bdops;
1157 msb->disk->private_data = msb;
1158
1159 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1160
1161 blk_queue_logical_block_size(msb->queue, msb->page_size);
1162
1163 capacity = be16_to_cpu(sys_info->user_block_count);
1164 capacity *= be16_to_cpu(sys_info->block_size);
1165 capacity *= msb->page_size >> 9;
1166 set_capacity(msb->disk, capacity);
1167 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1168
1169 if (msb->read_only)
1170 set_disk_ro(msb->disk, true);
1171
1172 rc = device_add_disk(&card->dev, msb->disk, NULL);
1173 if (rc)
1174 goto out_cleanup_disk;
1175 msb->active = 1;
1176 return 0;
1177
1178out_cleanup_disk:
1179 put_disk(msb->disk);
1180out_free_tag_set:
1181 blk_mq_free_tag_set(&msb->tag_set);
1182out_release_id:
1183 mutex_lock(&mspro_block_disk_lock);
1184 idr_remove(&mspro_block_disk_idr, disk_id);
1185 mutex_unlock(&mspro_block_disk_lock);
1186 return rc;
1187}
1188
1189static void mspro_block_data_clear(struct mspro_block_data *msb)
1190{
1191 int cnt;
1192 struct mspro_sys_attr *s_attr;
1193
1194 if (msb->attr_group.attrs) {
1195 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1196 s_attr = mspro_from_sysfs_attr(msb->attr_group
1197 .attrs[cnt]);
1198 kfree(s_attr->data);
1199 kfree(s_attr);
1200 }
1201 kfree(msb->attr_group.attrs);
1202 }
1203
1204 msb->card = NULL;
1205}
1206
1207static int mspro_block_check_card(struct memstick_dev *card)
1208{
1209 struct mspro_block_data *msb = memstick_get_drvdata(card);
1210
1211 return (msb->active == 1);
1212}
1213
1214static int mspro_block_probe(struct memstick_dev *card)
1215{
1216 struct mspro_block_data *msb;
1217 int rc = 0;
1218
1219 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1220 if (!msb)
1221 return -ENOMEM;
1222 memstick_set_drvdata(card, msb);
1223 msb->card = card;
1224 spin_lock_init(&msb->q_lock);
1225
1226 rc = mspro_block_init_card(card);
1227
1228 if (rc)
1229 goto out_free;
1230
1231 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1232 if (rc)
1233 goto out_free;
1234
1235 rc = mspro_block_init_disk(card);
1236 if (!rc) {
1237 card->check = mspro_block_check_card;
1238 card->stop = mspro_block_stop;
1239 card->start = mspro_block_start;
1240 return 0;
1241 }
1242
1243 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1244out_free:
1245 memstick_set_drvdata(card, NULL);
1246 mspro_block_data_clear(msb);
1247 kfree(msb);
1248 return rc;
1249}
1250
1251static void mspro_block_remove(struct memstick_dev *card)
1252{
1253 struct mspro_block_data *msb = memstick_get_drvdata(card);
1254 unsigned long flags;
1255
1256 spin_lock_irqsave(&msb->q_lock, flags);
1257 msb->eject = 1;
1258 spin_unlock_irqrestore(&msb->q_lock, flags);
1259 blk_mq_start_hw_queues(msb->queue);
1260
1261 del_gendisk(msb->disk);
1262 dev_dbg(&card->dev, "mspro block remove\n");
1263
1264 blk_mq_free_tag_set(&msb->tag_set);
1265 msb->queue = NULL;
1266
1267 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1268
1269 mutex_lock(&mspro_block_disk_lock);
1270 mspro_block_data_clear(msb);
1271 mutex_unlock(&mspro_block_disk_lock);
1272
1273 put_disk(msb->disk);
1274 memstick_set_drvdata(card, NULL);
1275}
1276
1277#ifdef CONFIG_PM
1278
1279static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1280{
1281 struct mspro_block_data *msb = memstick_get_drvdata(card);
1282 unsigned long flags;
1283
1284 blk_mq_stop_hw_queues(msb->queue);
1285
1286 spin_lock_irqsave(&msb->q_lock, flags);
1287 msb->active = 0;
1288 spin_unlock_irqrestore(&msb->q_lock, flags);
1289
1290 return 0;
1291}
1292
1293static int mspro_block_resume(struct memstick_dev *card)
1294{
1295 struct mspro_block_data *msb = memstick_get_drvdata(card);
1296 int rc = 0;
1297
1298#ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1299
1300 struct mspro_block_data *new_msb;
1301 struct memstick_host *host = card->host;
1302 struct mspro_sys_attr *s_attr, *r_attr;
1303 unsigned char cnt;
1304
1305 mutex_lock(&host->lock);
1306 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1307 if (!new_msb) {
1308 rc = -ENOMEM;
1309 goto out_unlock;
1310 }
1311
1312 new_msb->card = card;
1313 memstick_set_drvdata(card, new_msb);
1314 rc = mspro_block_init_card(card);
1315 if (rc)
1316 goto out_free;
1317
1318 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1319 && msb->attr_group.attrs[cnt]; ++cnt) {
1320 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1321 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1322
1323 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1324 && r_attr->id == s_attr->id) {
1325 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1326 break;
1327
1328 msb->active = 1;
1329 break;
1330 }
1331 }
1332
1333out_free:
1334 memstick_set_drvdata(card, msb);
1335 mspro_block_data_clear(new_msb);
1336 kfree(new_msb);
1337out_unlock:
1338 mutex_unlock(&host->lock);
1339
1340#endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1341
1342 blk_mq_start_hw_queues(msb->queue);
1343 return rc;
1344}
1345
1346#else
1347
1348#define mspro_block_suspend NULL
1349#define mspro_block_resume NULL
1350
1351#endif /* CONFIG_PM */
1352
1353static struct memstick_device_id mspro_block_id_tbl[] = {
1354 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1355 MEMSTICK_CLASS_DUO},
1356 {}
1357};
1358
1359
1360static struct memstick_driver mspro_block_driver = {
1361 .driver = {
1362 .name = DRIVER_NAME,
1363 .owner = THIS_MODULE
1364 },
1365 .id_table = mspro_block_id_tbl,
1366 .probe = mspro_block_probe,
1367 .remove = mspro_block_remove,
1368 .suspend = mspro_block_suspend,
1369 .resume = mspro_block_resume
1370};
1371
1372static int __init mspro_block_init(void)
1373{
1374 int rc = -ENOMEM;
1375
1376 rc = register_blkdev(major, DRIVER_NAME);
1377 if (rc < 0) {
1378 printk(KERN_ERR DRIVER_NAME ": failed to register "
1379 "major %d, error %d\n", major, rc);
1380 return rc;
1381 }
1382 if (!major)
1383 major = rc;
1384
1385 rc = memstick_register_driver(&mspro_block_driver);
1386 if (rc)
1387 unregister_blkdev(major, DRIVER_NAME);
1388 return rc;
1389}
1390
1391static void __exit mspro_block_exit(void)
1392{
1393 memstick_unregister_driver(&mspro_block_driver);
1394 unregister_blkdev(major, DRIVER_NAME);
1395 idr_destroy(&mspro_block_disk_idr);
1396}
1397
1398module_init(mspro_block_init);
1399module_exit(mspro_block_exit);
1400
1401MODULE_LICENSE("GPL");
1402MODULE_AUTHOR("Alex Dubov");
1403MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1404MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
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/slab.h>
21#include <linux/mutex.h>
22#include <linux/memstick.h>
23#include <linux/module.h>
24
25#define DRIVER_NAME "mspro_block"
26
27static int major;
28module_param(major, int, 0644);
29
30#define MSPRO_BLOCK_MAX_SEGS 32
31#define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
32
33#define MSPRO_BLOCK_SIGNATURE 0xa5c3
34#define MSPRO_BLOCK_MAX_ATTRIBUTES 41
35
36#define MSPRO_BLOCK_PART_SHIFT 3
37
38enum {
39 MSPRO_BLOCK_ID_SYSINFO = 0x10,
40 MSPRO_BLOCK_ID_MODELNAME = 0x15,
41 MSPRO_BLOCK_ID_MBR = 0x20,
42 MSPRO_BLOCK_ID_PBR16 = 0x21,
43 MSPRO_BLOCK_ID_PBR32 = 0x22,
44 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
45 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
46 MSPRO_BLOCK_ID_DEVINFO = 0x30
47};
48
49struct mspro_sys_attr {
50 size_t size;
51 void *data;
52 unsigned char id;
53 char name[32];
54 struct device_attribute dev_attr;
55};
56
57struct mspro_attr_entry {
58 __be32 address;
59 __be32 size;
60 unsigned char id;
61 unsigned char reserved[3];
62} __attribute__((packed));
63
64struct mspro_attribute {
65 __be16 signature;
66 unsigned short version;
67 unsigned char count;
68 unsigned char reserved[11];
69 struct mspro_attr_entry entries[];
70} __attribute__((packed));
71
72struct mspro_sys_info {
73 unsigned char class;
74 unsigned char reserved0;
75 __be16 block_size;
76 __be16 block_count;
77 __be16 user_block_count;
78 __be16 page_size;
79 unsigned char reserved1[2];
80 unsigned char assembly_date[8];
81 __be32 serial_number;
82 unsigned char assembly_maker_code;
83 unsigned char assembly_model_code[3];
84 __be16 memory_maker_code;
85 __be16 memory_model_code;
86 unsigned char reserved2[4];
87 unsigned char vcc;
88 unsigned char vpp;
89 __be16 controller_number;
90 __be16 controller_function;
91 __be16 start_sector;
92 __be16 unit_size;
93 unsigned char ms_sub_class;
94 unsigned char reserved3[4];
95 unsigned char interface_type;
96 __be16 controller_code;
97 unsigned char format_type;
98 unsigned char reserved4;
99 unsigned char device_type;
100 unsigned char reserved5[7];
101 unsigned char mspro_id[16];
102 unsigned char reserved6[16];
103} __attribute__((packed));
104
105struct mspro_mbr {
106 unsigned char boot_partition;
107 unsigned char start_head;
108 unsigned char start_sector;
109 unsigned char start_cylinder;
110 unsigned char partition_type;
111 unsigned char end_head;
112 unsigned char end_sector;
113 unsigned char end_cylinder;
114 unsigned int start_sectors;
115 unsigned int sectors_per_partition;
116} __attribute__((packed));
117
118struct mspro_specfile {
119 char name[8];
120 char ext[3];
121 unsigned char attr;
122 unsigned char reserved[10];
123 unsigned short time;
124 unsigned short date;
125 unsigned short cluster;
126 unsigned int size;
127} __attribute__((packed));
128
129struct mspro_devinfo {
130 __be16 cylinders;
131 __be16 heads;
132 __be16 bytes_per_track;
133 __be16 bytes_per_sector;
134 __be16 sectors_per_track;
135 unsigned char reserved[6];
136} __attribute__((packed));
137
138struct mspro_block_data {
139 struct memstick_dev *card;
140 unsigned int usage_count;
141 unsigned int caps;
142 struct gendisk *disk;
143 struct request_queue *queue;
144 struct request *block_req;
145 spinlock_t q_lock;
146
147 unsigned short page_size;
148 unsigned short cylinders;
149 unsigned short heads;
150 unsigned short sectors_per_track;
151
152 unsigned char system;
153 unsigned char read_only:1,
154 eject:1,
155 has_request:1,
156 data_dir:1,
157 active:1;
158 unsigned char transfer_cmd;
159
160 int (*mrq_handler)(struct memstick_dev *card,
161 struct memstick_request **mrq);
162
163
164 /* Default request setup function for data access method preferred by
165 * this host instance.
166 */
167 void (*setup_transfer)(struct memstick_dev *card,
168 u64 offset, size_t length);
169
170 struct attribute_group attr_group;
171
172 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
173 unsigned int seg_count;
174 unsigned int current_seg;
175 unsigned int current_page;
176};
177
178static DEFINE_IDR(mspro_block_disk_idr);
179static DEFINE_MUTEX(mspro_block_disk_lock);
180
181static int mspro_block_complete_req(struct memstick_dev *card, int error);
182
183/*** Block device ***/
184
185static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
186{
187 struct gendisk *disk = bdev->bd_disk;
188 struct mspro_block_data *msb = disk->private_data;
189 int rc = -ENXIO;
190
191 mutex_lock(&mspro_block_disk_lock);
192
193 if (msb && msb->card) {
194 msb->usage_count++;
195 if ((mode & FMODE_WRITE) && msb->read_only)
196 rc = -EROFS;
197 else
198 rc = 0;
199 }
200
201 mutex_unlock(&mspro_block_disk_lock);
202
203 return rc;
204}
205
206
207static int mspro_block_disk_release(struct gendisk *disk)
208{
209 struct mspro_block_data *msb = disk->private_data;
210 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
211
212 mutex_lock(&mspro_block_disk_lock);
213
214 if (msb) {
215 if (msb->usage_count)
216 msb->usage_count--;
217
218 if (!msb->usage_count) {
219 kfree(msb);
220 disk->private_data = NULL;
221 idr_remove(&mspro_block_disk_idr, disk_id);
222 put_disk(disk);
223 }
224 }
225
226 mutex_unlock(&mspro_block_disk_lock);
227
228 return 0;
229}
230
231static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
232{
233 return mspro_block_disk_release(disk);
234}
235
236static int mspro_block_bd_getgeo(struct block_device *bdev,
237 struct hd_geometry *geo)
238{
239 struct mspro_block_data *msb = bdev->bd_disk->private_data;
240
241 geo->heads = msb->heads;
242 geo->sectors = msb->sectors_per_track;
243 geo->cylinders = msb->cylinders;
244
245 return 0;
246}
247
248static const struct block_device_operations ms_block_bdops = {
249 .open = mspro_block_bd_open,
250 .release = mspro_block_bd_release,
251 .getgeo = mspro_block_bd_getgeo,
252 .owner = THIS_MODULE
253};
254
255/*** Information ***/
256
257static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
258{
259 struct device_attribute *dev_attr
260 = container_of(attr, struct device_attribute, attr);
261 return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
262}
263
264static const char *mspro_block_attr_name(unsigned char tag)
265{
266 switch (tag) {
267 case MSPRO_BLOCK_ID_SYSINFO:
268 return "attr_sysinfo";
269 case MSPRO_BLOCK_ID_MODELNAME:
270 return "attr_modelname";
271 case MSPRO_BLOCK_ID_MBR:
272 return "attr_mbr";
273 case MSPRO_BLOCK_ID_PBR16:
274 return "attr_pbr16";
275 case MSPRO_BLOCK_ID_PBR32:
276 return "attr_pbr32";
277 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
278 return "attr_specfilevalues1";
279 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
280 return "attr_specfilevalues2";
281 case MSPRO_BLOCK_ID_DEVINFO:
282 return "attr_devinfo";
283 default:
284 return NULL;
285 };
286}
287
288typedef ssize_t (*sysfs_show_t)(struct device *dev,
289 struct device_attribute *attr,
290 char *buffer);
291
292static ssize_t mspro_block_attr_show_default(struct device *dev,
293 struct device_attribute *attr,
294 char *buffer)
295{
296 struct mspro_sys_attr *s_attr = container_of(attr,
297 struct mspro_sys_attr,
298 dev_attr);
299
300 ssize_t cnt, rc = 0;
301
302 for (cnt = 0; cnt < s_attr->size; cnt++) {
303 if (cnt && !(cnt % 16)) {
304 if (PAGE_SIZE - rc)
305 buffer[rc++] = '\n';
306 }
307
308 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
309 ((unsigned char *)s_attr->data)[cnt]);
310 }
311 return rc;
312}
313
314static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
315 struct device_attribute *attr,
316 char *buffer)
317{
318 struct mspro_sys_attr *x_attr = container_of(attr,
319 struct mspro_sys_attr,
320 dev_attr);
321 struct mspro_sys_info *x_sys = x_attr->data;
322 ssize_t rc = 0;
323 int date_tz = 0, date_tz_f = 0;
324
325 if (x_sys->assembly_date[0] > 0x80U) {
326 date_tz = (~x_sys->assembly_date[0]) + 1;
327 date_tz_f = date_tz & 3;
328 date_tz >>= 2;
329 date_tz = -date_tz;
330 date_tz_f *= 15;
331 } else if (x_sys->assembly_date[0] < 0x80U) {
332 date_tz = x_sys->assembly_date[0];
333 date_tz_f = date_tz & 3;
334 date_tz >>= 2;
335 date_tz_f *= 15;
336 }
337
338 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
339 x_sys->class);
340 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
341 be16_to_cpu(x_sys->block_size));
342 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
343 be16_to_cpu(x_sys->block_count));
344 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
345 be16_to_cpu(x_sys->user_block_count));
346 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
347 be16_to_cpu(x_sys->page_size));
348 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
349 "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
350 date_tz, date_tz_f,
351 be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
352 x_sys->assembly_date[3], x_sys->assembly_date[4],
353 x_sys->assembly_date[5], x_sys->assembly_date[6],
354 x_sys->assembly_date[7]);
355 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
356 be32_to_cpu(x_sys->serial_number));
357 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
358 "assembly maker code: %x\n",
359 x_sys->assembly_maker_code);
360 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
361 "%02x%02x%02x\n", x_sys->assembly_model_code[0],
362 x_sys->assembly_model_code[1],
363 x_sys->assembly_model_code[2]);
364 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
365 be16_to_cpu(x_sys->memory_maker_code));
366 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
367 be16_to_cpu(x_sys->memory_model_code));
368 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
369 x_sys->vcc);
370 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
371 x_sys->vpp);
372 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
373 be16_to_cpu(x_sys->controller_number));
374 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
375 "controller function: %x\n",
376 be16_to_cpu(x_sys->controller_function));
377 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
378 be16_to_cpu(x_sys->start_sector));
379 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
380 be16_to_cpu(x_sys->unit_size));
381 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
382 x_sys->ms_sub_class);
383 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
384 x_sys->interface_type);
385 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
386 be16_to_cpu(x_sys->controller_code));
387 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
388 x_sys->format_type);
389 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
390 x_sys->device_type);
391 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
392 x_sys->mspro_id);
393 return rc;
394}
395
396static ssize_t mspro_block_attr_show_modelname(struct device *dev,
397 struct device_attribute *attr,
398 char *buffer)
399{
400 struct mspro_sys_attr *s_attr = container_of(attr,
401 struct mspro_sys_attr,
402 dev_attr);
403
404 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
405}
406
407static ssize_t mspro_block_attr_show_mbr(struct device *dev,
408 struct device_attribute *attr,
409 char *buffer)
410{
411 struct mspro_sys_attr *x_attr = container_of(attr,
412 struct mspro_sys_attr,
413 dev_attr);
414 struct mspro_mbr *x_mbr = x_attr->data;
415 ssize_t rc = 0;
416
417 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
418 x_mbr->boot_partition);
419 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
420 x_mbr->start_head);
421 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
422 x_mbr->start_sector);
423 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
424 x_mbr->start_cylinder);
425 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
426 x_mbr->partition_type);
427 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
428 x_mbr->end_head);
429 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
430 x_mbr->end_sector);
431 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
432 x_mbr->end_cylinder);
433 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
434 x_mbr->start_sectors);
435 rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
436 "sectors per partition: %x\n",
437 x_mbr->sectors_per_partition);
438 return rc;
439}
440
441static ssize_t mspro_block_attr_show_specfile(struct device *dev,
442 struct device_attribute *attr,
443 char *buffer)
444{
445 struct mspro_sys_attr *x_attr = container_of(attr,
446 struct mspro_sys_attr,
447 dev_attr);
448 struct mspro_specfile *x_spfile = x_attr->data;
449 char name[9], ext[4];
450 ssize_t rc = 0;
451
452 memcpy(name, x_spfile->name, 8);
453 name[8] = 0;
454 memcpy(ext, x_spfile->ext, 3);
455 ext[3] = 0;
456
457 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
458 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
459 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
460 x_spfile->attr);
461 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
462 x_spfile->time >> 11,
463 (x_spfile->time >> 5) & 0x3f,
464 (x_spfile->time & 0x1f) * 2);
465 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
466 (x_spfile->date >> 9) + 1980,
467 (x_spfile->date >> 5) & 0xf,
468 x_spfile->date & 0x1f);
469 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
470 x_spfile->cluster);
471 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
472 x_spfile->size);
473 return rc;
474}
475
476static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
477 struct device_attribute *attr,
478 char *buffer)
479{
480 struct mspro_sys_attr *x_attr = container_of(attr,
481 struct mspro_sys_attr,
482 dev_attr);
483 struct mspro_devinfo *x_devinfo = x_attr->data;
484 ssize_t rc = 0;
485
486 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
487 be16_to_cpu(x_devinfo->cylinders));
488 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
489 be16_to_cpu(x_devinfo->heads));
490 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
491 be16_to_cpu(x_devinfo->bytes_per_track));
492 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
493 be16_to_cpu(x_devinfo->bytes_per_sector));
494 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
495 be16_to_cpu(x_devinfo->sectors_per_track));
496 return rc;
497}
498
499static sysfs_show_t mspro_block_attr_show(unsigned char tag)
500{
501 switch (tag) {
502 case MSPRO_BLOCK_ID_SYSINFO:
503 return mspro_block_attr_show_sysinfo;
504 case MSPRO_BLOCK_ID_MODELNAME:
505 return mspro_block_attr_show_modelname;
506 case MSPRO_BLOCK_ID_MBR:
507 return mspro_block_attr_show_mbr;
508 case MSPRO_BLOCK_ID_SPECFILEVALUES1:
509 case MSPRO_BLOCK_ID_SPECFILEVALUES2:
510 return mspro_block_attr_show_specfile;
511 case MSPRO_BLOCK_ID_DEVINFO:
512 return mspro_block_attr_show_devinfo;
513 default:
514 return mspro_block_attr_show_default;
515 }
516}
517
518/*** Protocol handlers ***/
519
520/*
521 * Functions prefixed with "h_" are protocol callbacks. They can be called from
522 * interrupt context. Return value of 0 means that request processing is still
523 * ongoing, while special error value of -EAGAIN means that current request is
524 * finished (and request processor should come back some time later).
525 */
526
527static int h_mspro_block_req_init(struct memstick_dev *card,
528 struct memstick_request **mrq)
529{
530 struct mspro_block_data *msb = memstick_get_drvdata(card);
531
532 *mrq = &card->current_mrq;
533 card->next_request = msb->mrq_handler;
534 return 0;
535}
536
537static int h_mspro_block_default(struct memstick_dev *card,
538 struct memstick_request **mrq)
539{
540 return mspro_block_complete_req(card, (*mrq)->error);
541}
542
543static int h_mspro_block_default_bad(struct memstick_dev *card,
544 struct memstick_request **mrq)
545{
546 return -ENXIO;
547}
548
549static int h_mspro_block_get_ro(struct memstick_dev *card,
550 struct memstick_request **mrq)
551{
552 struct mspro_block_data *msb = memstick_get_drvdata(card);
553
554 if (!(*mrq)->error) {
555 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
556 & MEMSTICK_STATUS0_WP)
557 msb->read_only = 1;
558 else
559 msb->read_only = 0;
560 }
561
562 return mspro_block_complete_req(card, (*mrq)->error);
563}
564
565static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
566 struct memstick_request **mrq)
567{
568 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
569
570 if (!(*mrq)->error) {
571 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
572 (*mrq)->error = -EFAULT;
573 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
574 return 0;
575 }
576
577 return mspro_block_complete_req(card, (*mrq)->error);
578}
579
580static int h_mspro_block_transfer_data(struct memstick_dev *card,
581 struct memstick_request **mrq)
582{
583 struct mspro_block_data *msb = memstick_get_drvdata(card);
584 unsigned char t_val = 0;
585 struct scatterlist t_sg = { 0 };
586 size_t t_offset;
587
588 if ((*mrq)->error)
589 return mspro_block_complete_req(card, (*mrq)->error);
590
591 switch ((*mrq)->tpc) {
592 case MS_TPC_WRITE_REG:
593 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
594 (*mrq)->need_card_int = 1;
595 return 0;
596 case MS_TPC_SET_CMD:
597 t_val = (*mrq)->int_reg;
598 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
599 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
600 goto has_int_reg;
601 return 0;
602 case MS_TPC_GET_INT:
603 t_val = (*mrq)->data[0];
604has_int_reg:
605 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
606 t_val = MSPRO_CMD_STOP;
607 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
608 card->next_request = h_mspro_block_default;
609 return 0;
610 }
611
612 if (msb->current_page
613 == (msb->req_sg[msb->current_seg].length
614 / msb->page_size)) {
615 msb->current_page = 0;
616 msb->current_seg++;
617
618 if (msb->current_seg == msb->seg_count) {
619 if (t_val & MEMSTICK_INT_CED) {
620 return mspro_block_complete_req(card,
621 0);
622 } else {
623 card->next_request
624 = h_mspro_block_wait_for_ced;
625 memstick_init_req(*mrq, MS_TPC_GET_INT,
626 NULL, 1);
627 return 0;
628 }
629 }
630 }
631
632 if (!(t_val & MEMSTICK_INT_BREQ)) {
633 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
634 return 0;
635 }
636
637 t_offset = msb->req_sg[msb->current_seg].offset;
638 t_offset += msb->current_page * msb->page_size;
639
640 sg_set_page(&t_sg,
641 nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
642 t_offset >> PAGE_SHIFT),
643 msb->page_size, offset_in_page(t_offset));
644
645 memstick_init_req_sg(*mrq, msb->data_dir == READ
646 ? MS_TPC_READ_LONG_DATA
647 : MS_TPC_WRITE_LONG_DATA,
648 &t_sg);
649 (*mrq)->need_card_int = 1;
650 return 0;
651 case MS_TPC_READ_LONG_DATA:
652 case MS_TPC_WRITE_LONG_DATA:
653 msb->current_page++;
654 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
655 t_val = (*mrq)->int_reg;
656 goto has_int_reg;
657 } else {
658 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
659 return 0;
660 }
661
662 default:
663 BUG();
664 }
665}
666
667/*** Transfer setup functions for different access methods. ***/
668
669/** Setup data transfer request for SET_CMD TPC with arguments in card
670 * registers.
671 *
672 * @card Current media instance
673 * @offset Target data offset in bytes
674 * @length Required transfer length in bytes.
675 */
676static void h_mspro_block_setup_cmd(struct memstick_dev *card, u64 offset,
677 size_t length)
678{
679 struct mspro_block_data *msb = memstick_get_drvdata(card);
680 struct mspro_param_register param = {
681 .system = msb->system,
682 .data_count = cpu_to_be16((uint16_t)(length / msb->page_size)),
683 /* ISO C90 warning precludes direct initialization for now. */
684 .data_address = 0,
685 .tpc_param = 0
686 };
687
688 do_div(offset, msb->page_size);
689 param.data_address = cpu_to_be32((uint32_t)offset);
690
691 card->next_request = h_mspro_block_req_init;
692 msb->mrq_handler = h_mspro_block_transfer_data;
693 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
694 ¶m, sizeof(param));
695}
696
697/*** Data transfer ***/
698
699static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
700{
701 struct mspro_block_data *msb = memstick_get_drvdata(card);
702 u64 t_off;
703 unsigned int count;
704
705try_again:
706 while (chunk) {
707 msb->current_page = 0;
708 msb->current_seg = 0;
709 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
710 msb->block_req,
711 msb->req_sg);
712
713 if (!msb->seg_count) {
714 chunk = __blk_end_request_cur(msb->block_req, -ENOMEM);
715 continue;
716 }
717
718 t_off = blk_rq_pos(msb->block_req);
719 t_off <<= 9;
720 count = blk_rq_bytes(msb->block_req);
721
722 msb->setup_transfer(card, t_off, count);
723
724 msb->data_dir = rq_data_dir(msb->block_req);
725 msb->transfer_cmd = msb->data_dir == READ
726 ? MSPRO_CMD_READ_DATA
727 : MSPRO_CMD_WRITE_DATA;
728
729 memstick_new_req(card->host);
730 return 0;
731 }
732
733 dev_dbg(&card->dev, "blk_fetch\n");
734 msb->block_req = blk_fetch_request(msb->queue);
735 if (!msb->block_req) {
736 dev_dbg(&card->dev, "issue end\n");
737 return -EAGAIN;
738 }
739
740 dev_dbg(&card->dev, "trying again\n");
741 chunk = 1;
742 goto try_again;
743}
744
745static int mspro_block_complete_req(struct memstick_dev *card, int error)
746{
747 struct mspro_block_data *msb = memstick_get_drvdata(card);
748 int chunk, cnt;
749 unsigned int t_len = 0;
750 unsigned long flags;
751
752 spin_lock_irqsave(&msb->q_lock, flags);
753 dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
754 error);
755
756 if (msb->has_request) {
757 /* Nothing to do - not really an error */
758 if (error == -EAGAIN)
759 error = 0;
760
761 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
762 if (msb->data_dir == READ) {
763 for (cnt = 0; cnt < msb->current_seg; cnt++)
764 t_len += msb->req_sg[cnt].length
765 / msb->page_size;
766
767 if (msb->current_page)
768 t_len += msb->current_page - 1;
769
770 t_len *= msb->page_size;
771 }
772 } else
773 t_len = blk_rq_bytes(msb->block_req);
774
775 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
776
777 if (error && !t_len)
778 t_len = blk_rq_cur_bytes(msb->block_req);
779
780 chunk = __blk_end_request(msb->block_req, error, t_len);
781
782 error = mspro_block_issue_req(card, chunk);
783
784 if (!error)
785 goto out;
786 else
787 msb->has_request = 0;
788 } else {
789 if (!error)
790 error = -EAGAIN;
791 }
792
793 card->next_request = h_mspro_block_default_bad;
794 complete_all(&card->mrq_complete);
795out:
796 spin_unlock_irqrestore(&msb->q_lock, flags);
797 return error;
798}
799
800static void mspro_block_stop(struct memstick_dev *card)
801{
802 struct mspro_block_data *msb = memstick_get_drvdata(card);
803 int rc = 0;
804 unsigned long flags;
805
806 while (1) {
807 spin_lock_irqsave(&msb->q_lock, flags);
808 if (!msb->has_request) {
809 blk_stop_queue(msb->queue);
810 rc = 1;
811 }
812 spin_unlock_irqrestore(&msb->q_lock, flags);
813
814 if (rc)
815 break;
816
817 wait_for_completion(&card->mrq_complete);
818 }
819}
820
821static void mspro_block_start(struct memstick_dev *card)
822{
823 struct mspro_block_data *msb = memstick_get_drvdata(card);
824 unsigned long flags;
825
826 spin_lock_irqsave(&msb->q_lock, flags);
827 blk_start_queue(msb->queue);
828 spin_unlock_irqrestore(&msb->q_lock, flags);
829}
830
831static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
832{
833 if (req->cmd_type != REQ_TYPE_FS &&
834 req->cmd_type != REQ_TYPE_BLOCK_PC) {
835 blk_dump_rq_flags(req, "MSPro unsupported request");
836 return BLKPREP_KILL;
837 }
838
839 req->cmd_flags |= REQ_DONTPREP;
840
841 return BLKPREP_OK;
842}
843
844static void mspro_block_submit_req(struct request_queue *q)
845{
846 struct memstick_dev *card = q->queuedata;
847 struct mspro_block_data *msb = memstick_get_drvdata(card);
848 struct request *req = NULL;
849
850 if (msb->has_request)
851 return;
852
853 if (msb->eject) {
854 while ((req = blk_fetch_request(q)) != NULL)
855 __blk_end_request_all(req, -ENODEV);
856
857 return;
858 }
859
860 msb->has_request = 1;
861 if (mspro_block_issue_req(card, 0))
862 msb->has_request = 0;
863}
864
865/*** Initialization ***/
866
867static int mspro_block_wait_for_ced(struct memstick_dev *card)
868{
869 struct mspro_block_data *msb = memstick_get_drvdata(card);
870
871 card->next_request = h_mspro_block_req_init;
872 msb->mrq_handler = h_mspro_block_wait_for_ced;
873 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
874 memstick_new_req(card->host);
875 wait_for_completion(&card->mrq_complete);
876 return card->current_mrq.error;
877}
878
879static int mspro_block_set_interface(struct memstick_dev *card,
880 unsigned char sys_reg)
881{
882 struct memstick_host *host = card->host;
883 struct mspro_block_data *msb = memstick_get_drvdata(card);
884 struct mspro_param_register param = {
885 .system = sys_reg,
886 .data_count = 0,
887 .data_address = 0,
888 .tpc_param = 0
889 };
890
891 card->next_request = h_mspro_block_req_init;
892 msb->mrq_handler = h_mspro_block_default;
893 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m,
894 sizeof(param));
895 memstick_new_req(host);
896 wait_for_completion(&card->mrq_complete);
897 return card->current_mrq.error;
898}
899
900static int mspro_block_switch_interface(struct memstick_dev *card)
901{
902 struct memstick_host *host = card->host;
903 struct mspro_block_data *msb = memstick_get_drvdata(card);
904 int rc = 0;
905
906try_again:
907 if (msb->caps & MEMSTICK_CAP_PAR4)
908 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
909 else
910 return 0;
911
912 if (rc) {
913 printk(KERN_WARNING
914 "%s: could not switch to 4-bit mode, error %d\n",
915 dev_name(&card->dev), rc);
916 return 0;
917 }
918
919 msb->system = MEMSTICK_SYS_PAR4;
920 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
921 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
922 dev_name(&card->dev));
923
924 if (msb->caps & MEMSTICK_CAP_PAR8) {
925 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
926
927 if (!rc) {
928 msb->system = MEMSTICK_SYS_PAR8;
929 host->set_param(host, MEMSTICK_INTERFACE,
930 MEMSTICK_PAR8);
931 printk(KERN_INFO
932 "%s: switching to 8-bit parallel mode\n",
933 dev_name(&card->dev));
934 } else
935 printk(KERN_WARNING
936 "%s: could not switch to 8-bit mode, error %d\n",
937 dev_name(&card->dev), rc);
938 }
939
940 card->next_request = h_mspro_block_req_init;
941 msb->mrq_handler = h_mspro_block_default;
942 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
943 memstick_new_req(card->host);
944 wait_for_completion(&card->mrq_complete);
945 rc = card->current_mrq.error;
946
947 if (rc) {
948 printk(KERN_WARNING
949 "%s: interface error, trying to fall back to serial\n",
950 dev_name(&card->dev));
951 msb->system = MEMSTICK_SYS_SERIAL;
952 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
953 msleep(10);
954 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
955 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
956
957 rc = memstick_set_rw_addr(card);
958 if (!rc)
959 rc = mspro_block_set_interface(card, msb->system);
960
961 if (!rc) {
962 msleep(150);
963 rc = mspro_block_wait_for_ced(card);
964 if (rc)
965 return rc;
966
967 if (msb->caps & MEMSTICK_CAP_PAR8) {
968 msb->caps &= ~MEMSTICK_CAP_PAR8;
969 goto try_again;
970 }
971 }
972 }
973 return rc;
974}
975
976/* Memory allocated for attributes by this function should be freed by
977 * mspro_block_data_clear, no matter if the initialization process succeeded
978 * or failed.
979 */
980static int mspro_block_read_attributes(struct memstick_dev *card)
981{
982 struct mspro_block_data *msb = memstick_get_drvdata(card);
983 struct mspro_attribute *attr = NULL;
984 struct mspro_sys_attr *s_attr = NULL;
985 unsigned char *buffer = NULL;
986 int cnt, rc, attr_count;
987 /* While normally physical device offsets, represented here by
988 * attr_offset and attr_len will be of large numeric types, we can be
989 * sure, that attributes are close enough to the beginning of the
990 * device, to save ourselves some trouble.
991 */
992 unsigned int addr, attr_offset = 0, attr_len = msb->page_size;
993
994 attr = kmalloc(msb->page_size, GFP_KERNEL);
995 if (!attr)
996 return -ENOMEM;
997
998 sg_init_one(&msb->req_sg[0], attr, msb->page_size);
999 msb->seg_count = 1;
1000 msb->current_seg = 0;
1001 msb->current_page = 0;
1002 msb->data_dir = READ;
1003 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1004
1005 msb->setup_transfer(card, attr_offset, attr_len);
1006
1007 memstick_new_req(card->host);
1008 wait_for_completion(&card->mrq_complete);
1009 if (card->current_mrq.error) {
1010 rc = card->current_mrq.error;
1011 goto out_free_attr;
1012 }
1013
1014 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
1015 printk(KERN_ERR "%s: unrecognized device signature %x\n",
1016 dev_name(&card->dev), be16_to_cpu(attr->signature));
1017 rc = -ENODEV;
1018 goto out_free_attr;
1019 }
1020
1021 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1022 printk(KERN_WARNING "%s: way too many attribute entries\n",
1023 dev_name(&card->dev));
1024 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1025 } else
1026 attr_count = attr->count;
1027
1028 msb->attr_group.attrs = kzalloc((attr_count + 1)
1029 * sizeof(struct attribute),
1030 GFP_KERNEL);
1031 if (!msb->attr_group.attrs) {
1032 rc = -ENOMEM;
1033 goto out_free_attr;
1034 }
1035 msb->attr_group.name = "media_attributes";
1036
1037 buffer = kmalloc(attr_len, GFP_KERNEL);
1038 if (!buffer) {
1039 rc = -ENOMEM;
1040 goto out_free_attr;
1041 }
1042 memcpy(buffer, (char *)attr, attr_len);
1043
1044 for (cnt = 0; cnt < attr_count; ++cnt) {
1045 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1046 if (!s_attr) {
1047 rc = -ENOMEM;
1048 goto out_free_buffer;
1049 }
1050
1051 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1052 addr = be32_to_cpu(attr->entries[cnt].address);
1053 s_attr->size = be32_to_cpu(attr->entries[cnt].size);
1054 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1055 "size %zx\n", cnt, attr->entries[cnt].id, addr,
1056 s_attr->size);
1057 s_attr->id = attr->entries[cnt].id;
1058 if (mspro_block_attr_name(s_attr->id))
1059 snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1060 mspro_block_attr_name(attr->entries[cnt].id));
1061 else
1062 snprintf(s_attr->name, sizeof(s_attr->name),
1063 "attr_x%02x", attr->entries[cnt].id);
1064
1065 sysfs_attr_init(&s_attr->dev_attr.attr);
1066 s_attr->dev_attr.attr.name = s_attr->name;
1067 s_attr->dev_attr.attr.mode = S_IRUGO;
1068 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1069
1070 if (!s_attr->size)
1071 continue;
1072
1073 s_attr->data = kmalloc(s_attr->size, GFP_KERNEL);
1074 if (!s_attr->data) {
1075 rc = -ENOMEM;
1076 goto out_free_buffer;
1077 }
1078
1079 if (((addr / msb->page_size) == (attr_offset / msb->page_size))
1080 && (((addr + s_attr->size - 1) / msb->page_size)
1081 == (attr_offset / msb->page_size))) {
1082 memcpy(s_attr->data, buffer + addr % msb->page_size,
1083 s_attr->size);
1084 continue;
1085 }
1086
1087 attr_offset = (addr / msb->page_size) * msb->page_size;
1088
1089 if ((attr_offset + attr_len) < (addr + s_attr->size)) {
1090 kfree(buffer);
1091 attr_len = (((addr + s_attr->size) / msb->page_size)
1092 + 1 ) * msb->page_size - attr_offset;
1093 buffer = kmalloc(attr_len, GFP_KERNEL);
1094 if (!buffer) {
1095 rc = -ENOMEM;
1096 goto out_free_attr;
1097 }
1098 }
1099
1100 sg_init_one(&msb->req_sg[0], buffer, attr_len);
1101 msb->seg_count = 1;
1102 msb->current_seg = 0;
1103 msb->current_page = 0;
1104 msb->data_dir = READ;
1105 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1106
1107 dev_dbg(&card->dev, "reading attribute range %x, %x\n",
1108 attr_offset, attr_len);
1109
1110 msb->setup_transfer(card, attr_offset, attr_len);
1111 memstick_new_req(card->host);
1112 wait_for_completion(&card->mrq_complete);
1113 if (card->current_mrq.error) {
1114 rc = card->current_mrq.error;
1115 goto out_free_buffer;
1116 }
1117
1118 memcpy(s_attr->data, buffer + addr % msb->page_size,
1119 s_attr->size);
1120 }
1121
1122 rc = 0;
1123out_free_buffer:
1124 kfree(buffer);
1125out_free_attr:
1126 kfree(attr);
1127 return rc;
1128}
1129
1130static int mspro_block_init_card(struct memstick_dev *card)
1131{
1132 struct mspro_block_data *msb = memstick_get_drvdata(card);
1133 struct memstick_host *host = card->host;
1134 int rc = 0;
1135
1136 msb->system = MEMSTICK_SYS_SERIAL;
1137 msb->setup_transfer = h_mspro_block_setup_cmd;
1138
1139 card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1140 card->reg_addr.r_length = sizeof(struct ms_status_register);
1141 card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1142 card->reg_addr.w_length = sizeof(struct mspro_param_register);
1143
1144 if (memstick_set_rw_addr(card))
1145 return -EIO;
1146
1147 msb->caps = host->caps;
1148
1149 msleep(150);
1150 rc = mspro_block_wait_for_ced(card);
1151 if (rc)
1152 return rc;
1153
1154 rc = mspro_block_switch_interface(card);
1155 if (rc)
1156 return rc;
1157
1158 dev_dbg(&card->dev, "card activated\n");
1159 if (msb->system != MEMSTICK_SYS_SERIAL)
1160 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1161
1162 card->next_request = h_mspro_block_req_init;
1163 msb->mrq_handler = h_mspro_block_get_ro;
1164 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1165 sizeof(struct ms_status_register));
1166 memstick_new_req(card->host);
1167 wait_for_completion(&card->mrq_complete);
1168 if (card->current_mrq.error)
1169 return card->current_mrq.error;
1170
1171 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1172
1173 msb->page_size = 512;
1174 rc = mspro_block_read_attributes(card);
1175 if (rc)
1176 return rc;
1177
1178 dev_dbg(&card->dev, "attributes loaded\n");
1179 return 0;
1180
1181}
1182
1183static int mspro_block_init_disk(struct memstick_dev *card)
1184{
1185 struct mspro_block_data *msb = memstick_get_drvdata(card);
1186 struct memstick_host *host = card->host;
1187 struct mspro_devinfo *dev_info = NULL;
1188 struct mspro_sys_info *sys_info = NULL;
1189 struct mspro_sys_attr *s_attr = NULL;
1190 int rc, disk_id;
1191 u64 limit = BLK_BOUNCE_HIGH;
1192 unsigned long capacity;
1193
1194 if (host->dev.dma_mask && *(host->dev.dma_mask))
1195 limit = *(host->dev.dma_mask);
1196
1197 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1198 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1199
1200 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1201 dev_info = s_attr->data;
1202 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1203 sys_info = s_attr->data;
1204 }
1205
1206 if (!dev_info || !sys_info)
1207 return -ENODEV;
1208
1209 msb->cylinders = be16_to_cpu(dev_info->cylinders);
1210 msb->heads = be16_to_cpu(dev_info->heads);
1211 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1212
1213 msb->page_size = be16_to_cpu(sys_info->unit_size);
1214
1215 mutex_lock(&mspro_block_disk_lock);
1216 if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL)) {
1217 mutex_unlock(&mspro_block_disk_lock);
1218 return -ENOMEM;
1219 }
1220
1221 rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1222 mutex_unlock(&mspro_block_disk_lock);
1223
1224 if (rc)
1225 return rc;
1226
1227 if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
1228 rc = -ENOSPC;
1229 goto out_release_id;
1230 }
1231
1232 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
1233 if (!msb->disk) {
1234 rc = -ENOMEM;
1235 goto out_release_id;
1236 }
1237
1238 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
1239 if (!msb->queue) {
1240 rc = -ENOMEM;
1241 goto out_put_disk;
1242 }
1243
1244 msb->queue->queuedata = card;
1245 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
1246
1247 blk_queue_bounce_limit(msb->queue, limit);
1248 blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1249 blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1250 blk_queue_max_segment_size(msb->queue,
1251 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1252
1253 msb->disk->major = major;
1254 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1255 msb->disk->fops = &ms_block_bdops;
1256 msb->usage_count = 1;
1257 msb->disk->private_data = msb;
1258 msb->disk->queue = msb->queue;
1259 msb->disk->driverfs_dev = &card->dev;
1260
1261 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1262
1263 blk_queue_logical_block_size(msb->queue, msb->page_size);
1264
1265 capacity = be16_to_cpu(sys_info->user_block_count);
1266 capacity *= be16_to_cpu(sys_info->block_size);
1267 capacity *= msb->page_size >> 9;
1268 set_capacity(msb->disk, capacity);
1269 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1270
1271 add_disk(msb->disk);
1272 msb->active = 1;
1273 return 0;
1274
1275out_put_disk:
1276 put_disk(msb->disk);
1277out_release_id:
1278 mutex_lock(&mspro_block_disk_lock);
1279 idr_remove(&mspro_block_disk_idr, disk_id);
1280 mutex_unlock(&mspro_block_disk_lock);
1281 return rc;
1282}
1283
1284static void mspro_block_data_clear(struct mspro_block_data *msb)
1285{
1286 int cnt;
1287 struct mspro_sys_attr *s_attr;
1288
1289 if (msb->attr_group.attrs) {
1290 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1291 s_attr = mspro_from_sysfs_attr(msb->attr_group
1292 .attrs[cnt]);
1293 kfree(s_attr->data);
1294 kfree(s_attr);
1295 }
1296 kfree(msb->attr_group.attrs);
1297 }
1298
1299 msb->card = NULL;
1300}
1301
1302static int mspro_block_check_card(struct memstick_dev *card)
1303{
1304 struct mspro_block_data *msb = memstick_get_drvdata(card);
1305
1306 return (msb->active == 1);
1307}
1308
1309static int mspro_block_probe(struct memstick_dev *card)
1310{
1311 struct mspro_block_data *msb;
1312 int rc = 0;
1313
1314 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1315 if (!msb)
1316 return -ENOMEM;
1317 memstick_set_drvdata(card, msb);
1318 msb->card = card;
1319 spin_lock_init(&msb->q_lock);
1320
1321 rc = mspro_block_init_card(card);
1322
1323 if (rc)
1324 goto out_free;
1325
1326 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1327 if (rc)
1328 goto out_free;
1329
1330 rc = mspro_block_init_disk(card);
1331 if (!rc) {
1332 card->check = mspro_block_check_card;
1333 card->stop = mspro_block_stop;
1334 card->start = mspro_block_start;
1335 return 0;
1336 }
1337
1338 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1339out_free:
1340 memstick_set_drvdata(card, NULL);
1341 mspro_block_data_clear(msb);
1342 kfree(msb);
1343 return rc;
1344}
1345
1346static void mspro_block_remove(struct memstick_dev *card)
1347{
1348 struct mspro_block_data *msb = memstick_get_drvdata(card);
1349 unsigned long flags;
1350
1351 spin_lock_irqsave(&msb->q_lock, flags);
1352 msb->eject = 1;
1353 blk_start_queue(msb->queue);
1354 spin_unlock_irqrestore(&msb->q_lock, flags);
1355
1356 del_gendisk(msb->disk);
1357 dev_dbg(&card->dev, "mspro block remove\n");
1358
1359 blk_cleanup_queue(msb->queue);
1360 msb->queue = NULL;
1361
1362 sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1363
1364 mutex_lock(&mspro_block_disk_lock);
1365 mspro_block_data_clear(msb);
1366 mutex_unlock(&mspro_block_disk_lock);
1367
1368 mspro_block_disk_release(msb->disk);
1369 memstick_set_drvdata(card, NULL);
1370}
1371
1372#ifdef CONFIG_PM
1373
1374static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1375{
1376 struct mspro_block_data *msb = memstick_get_drvdata(card);
1377 unsigned long flags;
1378
1379 spin_lock_irqsave(&msb->q_lock, flags);
1380 blk_stop_queue(msb->queue);
1381 msb->active = 0;
1382 spin_unlock_irqrestore(&msb->q_lock, flags);
1383
1384 return 0;
1385}
1386
1387static int mspro_block_resume(struct memstick_dev *card)
1388{
1389 struct mspro_block_data *msb = memstick_get_drvdata(card);
1390 unsigned long flags;
1391 int rc = 0;
1392
1393#ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1394
1395 struct mspro_block_data *new_msb;
1396 struct memstick_host *host = card->host;
1397 struct mspro_sys_attr *s_attr, *r_attr;
1398 unsigned char cnt;
1399
1400 mutex_lock(&host->lock);
1401 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1402 if (!new_msb) {
1403 rc = -ENOMEM;
1404 goto out_unlock;
1405 }
1406
1407 new_msb->card = card;
1408 memstick_set_drvdata(card, new_msb);
1409 if (mspro_block_init_card(card))
1410 goto out_free;
1411
1412 for (cnt = 0; new_msb->attr_group.attrs[cnt]
1413 && msb->attr_group.attrs[cnt]; ++cnt) {
1414 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1415 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1416
1417 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1418 && r_attr->id == s_attr->id) {
1419 if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1420 break;
1421
1422 msb->active = 1;
1423 break;
1424 }
1425 }
1426
1427out_free:
1428 memstick_set_drvdata(card, msb);
1429 mspro_block_data_clear(new_msb);
1430 kfree(new_msb);
1431out_unlock:
1432 mutex_unlock(&host->lock);
1433
1434#endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1435
1436 spin_lock_irqsave(&msb->q_lock, flags);
1437 blk_start_queue(msb->queue);
1438 spin_unlock_irqrestore(&msb->q_lock, flags);
1439 return rc;
1440}
1441
1442#else
1443
1444#define mspro_block_suspend NULL
1445#define mspro_block_resume NULL
1446
1447#endif /* CONFIG_PM */
1448
1449static struct memstick_device_id mspro_block_id_tbl[] = {
1450 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1451 MEMSTICK_CLASS_DUO},
1452 {}
1453};
1454
1455
1456static struct memstick_driver mspro_block_driver = {
1457 .driver = {
1458 .name = DRIVER_NAME,
1459 .owner = THIS_MODULE
1460 },
1461 .id_table = mspro_block_id_tbl,
1462 .probe = mspro_block_probe,
1463 .remove = mspro_block_remove,
1464 .suspend = mspro_block_suspend,
1465 .resume = mspro_block_resume
1466};
1467
1468static int __init mspro_block_init(void)
1469{
1470 int rc = -ENOMEM;
1471
1472 rc = register_blkdev(major, DRIVER_NAME);
1473 if (rc < 0) {
1474 printk(KERN_ERR DRIVER_NAME ": failed to register "
1475 "major %d, error %d\n", major, rc);
1476 return rc;
1477 }
1478 if (!major)
1479 major = rc;
1480
1481 rc = memstick_register_driver(&mspro_block_driver);
1482 if (rc)
1483 unregister_blkdev(major, DRIVER_NAME);
1484 return rc;
1485}
1486
1487static void __exit mspro_block_exit(void)
1488{
1489 memstick_unregister_driver(&mspro_block_driver);
1490 unregister_blkdev(major, DRIVER_NAME);
1491 idr_destroy(&mspro_block_disk_idr);
1492}
1493
1494module_init(mspro_block_init);
1495module_exit(mspro_block_exit);
1496
1497MODULE_LICENSE("GPL");
1498MODULE_AUTHOR("Alex Dubov");
1499MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1500MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);