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