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baf8532a AD |
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> | |
59367258 | 19 | #include <linux/delay.h> |
baf8532a AD |
20 | #include <linux/memstick.h> |
21 | ||
22 | #define DRIVER_NAME "mspro_block" | |
baf8532a AD |
23 | |
24 | static int major; | |
25 | module_param(major, int, 0644); | |
26 | ||
27 | #define MSPRO_BLOCK_MAX_SEGS 32 | |
28 | #define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1) | |
29 | ||
30 | #define MSPRO_BLOCK_SIGNATURE 0xa5c3 | |
31 | #define MSPRO_BLOCK_MAX_ATTRIBUTES 41 | |
32 | ||
33 | enum { | |
34 | MSPRO_BLOCK_ID_SYSINFO = 0x10, | |
35 | MSPRO_BLOCK_ID_MODELNAME = 0x15, | |
36 | MSPRO_BLOCK_ID_MBR = 0x20, | |
37 | MSPRO_BLOCK_ID_PBR16 = 0x21, | |
38 | MSPRO_BLOCK_ID_PBR32 = 0x22, | |
39 | MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25, | |
40 | MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26, | |
41 | MSPRO_BLOCK_ID_DEVINFO = 0x30 | |
42 | }; | |
43 | ||
44 | struct mspro_sys_attr { | |
45 | size_t size; | |
46 | void *data; | |
47 | unsigned char id; | |
48 | char name[32]; | |
49 | struct device_attribute dev_attr; | |
50 | }; | |
51 | ||
52 | struct mspro_attr_entry { | |
53 | unsigned int address; | |
54 | unsigned int size; | |
55 | unsigned char id; | |
56 | unsigned char reserved[3]; | |
57 | } __attribute__((packed)); | |
58 | ||
59 | struct mspro_attribute { | |
60 | unsigned short signature; | |
61 | unsigned short version; | |
62 | unsigned char count; | |
63 | unsigned char reserved[11]; | |
64 | struct mspro_attr_entry entries[]; | |
65 | } __attribute__((packed)); | |
66 | ||
67 | struct mspro_sys_info { | |
68 | unsigned char class; | |
69 | unsigned char reserved0; | |
70 | unsigned short block_size; | |
71 | unsigned short block_count; | |
72 | unsigned short user_block_count; | |
73 | unsigned short page_size; | |
74 | unsigned char reserved1[2]; | |
75 | unsigned char assembly_date[8]; | |
76 | unsigned int serial_number; | |
77 | unsigned char assembly_maker_code; | |
78 | unsigned char assembly_model_code[3]; | |
79 | unsigned short memory_maker_code; | |
80 | unsigned short memory_model_code; | |
81 | unsigned char reserved2[4]; | |
82 | unsigned char vcc; | |
83 | unsigned char vpp; | |
84 | unsigned short controller_number; | |
85 | unsigned short controller_function; | |
86 | unsigned short start_sector; | |
87 | unsigned short unit_size; | |
88 | unsigned char ms_sub_class; | |
89 | unsigned char reserved3[4]; | |
90 | unsigned char interface_type; | |
91 | unsigned short controller_code; | |
92 | unsigned char format_type; | |
93 | unsigned char reserved4; | |
94 | unsigned char device_type; | |
95 | unsigned char reserved5[7]; | |
96 | unsigned char mspro_id[16]; | |
97 | unsigned char reserved6[16]; | |
98 | } __attribute__((packed)); | |
99 | ||
100 | struct mspro_mbr { | |
101 | unsigned char boot_partition; | |
102 | unsigned char start_head; | |
103 | unsigned char start_sector; | |
104 | unsigned char start_cylinder; | |
105 | unsigned char partition_type; | |
106 | unsigned char end_head; | |
107 | unsigned char end_sector; | |
108 | unsigned char end_cylinder; | |
109 | unsigned int start_sectors; | |
110 | unsigned int sectors_per_partition; | |
111 | } __attribute__((packed)); | |
112 | ||
efb2742e AD |
113 | struct mspro_specfile { |
114 | char name[8]; | |
115 | char ext[3]; | |
116 | unsigned char attr; | |
117 | unsigned char reserved[10]; | |
118 | unsigned short time; | |
119 | unsigned short date; | |
120 | unsigned short cluster; | |
121 | unsigned int size; | |
122 | } __attribute__((packed)); | |
123 | ||
baf8532a AD |
124 | struct mspro_devinfo { |
125 | unsigned short cylinders; | |
126 | unsigned short heads; | |
127 | unsigned short bytes_per_track; | |
128 | unsigned short bytes_per_sector; | |
129 | unsigned short sectors_per_track; | |
130 | unsigned char reserved[6]; | |
131 | } __attribute__((packed)); | |
132 | ||
133 | struct mspro_block_data { | |
134 | struct memstick_dev *card; | |
135 | unsigned int usage_count; | |
136 | struct gendisk *disk; | |
137 | struct request_queue *queue; | |
138 | spinlock_t q_lock; | |
139 | wait_queue_head_t q_wait; | |
140 | struct task_struct *q_thread; | |
141 | ||
142 | unsigned short page_size; | |
143 | unsigned short cylinders; | |
144 | unsigned short heads; | |
145 | unsigned short sectors_per_track; | |
146 | ||
147 | unsigned char system; | |
148 | unsigned char read_only:1, | |
149 | active:1, | |
150 | has_request:1, | |
151 | data_dir:1; | |
152 | unsigned char transfer_cmd; | |
153 | ||
154 | int (*mrq_handler)(struct memstick_dev *card, | |
155 | struct memstick_request **mrq); | |
156 | ||
157 | struct attribute_group attr_group; | |
158 | ||
159 | struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS]; | |
160 | unsigned int seg_count; | |
161 | unsigned int current_seg; | |
162 | unsigned short current_page; | |
163 | }; | |
164 | ||
165 | static DEFINE_IDR(mspro_block_disk_idr); | |
166 | static DEFINE_MUTEX(mspro_block_disk_lock); | |
167 | ||
168 | /*** Block device ***/ | |
169 | ||
170 | static int mspro_block_bd_open(struct inode *inode, struct file *filp) | |
171 | { | |
172 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
173 | struct mspro_block_data *msb = disk->private_data; | |
174 | int rc = -ENXIO; | |
175 | ||
176 | mutex_lock(&mspro_block_disk_lock); | |
177 | ||
178 | if (msb && msb->card) { | |
179 | msb->usage_count++; | |
180 | if ((filp->f_mode & FMODE_WRITE) && msb->read_only) | |
181 | rc = -EROFS; | |
182 | else | |
183 | rc = 0; | |
184 | } | |
185 | ||
186 | mutex_unlock(&mspro_block_disk_lock); | |
187 | ||
188 | return rc; | |
189 | } | |
190 | ||
191 | ||
192 | static int mspro_block_disk_release(struct gendisk *disk) | |
193 | { | |
194 | struct mspro_block_data *msb = disk->private_data; | |
195 | int disk_id = disk->first_minor >> MEMSTICK_PART_SHIFT; | |
196 | ||
197 | mutex_lock(&mspro_block_disk_lock); | |
198 | ||
199 | if (msb->usage_count) { | |
200 | msb->usage_count--; | |
201 | if (!msb->usage_count) { | |
202 | kfree(msb); | |
203 | disk->private_data = NULL; | |
204 | idr_remove(&mspro_block_disk_idr, disk_id); | |
205 | put_disk(disk); | |
206 | } | |
207 | } | |
208 | ||
209 | mutex_unlock(&mspro_block_disk_lock); | |
210 | ||
211 | return 0; | |
212 | } | |
213 | ||
214 | static int mspro_block_bd_release(struct inode *inode, struct file *filp) | |
215 | { | |
216 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
217 | return mspro_block_disk_release(disk); | |
218 | } | |
219 | ||
220 | static int mspro_block_bd_getgeo(struct block_device *bdev, | |
221 | struct hd_geometry *geo) | |
222 | { | |
223 | struct mspro_block_data *msb = bdev->bd_disk->private_data; | |
224 | ||
225 | geo->heads = msb->heads; | |
226 | geo->sectors = msb->sectors_per_track; | |
227 | geo->cylinders = msb->cylinders; | |
228 | ||
229 | return 0; | |
230 | } | |
231 | ||
232 | static struct block_device_operations ms_block_bdops = { | |
233 | .open = mspro_block_bd_open, | |
234 | .release = mspro_block_bd_release, | |
235 | .getgeo = mspro_block_bd_getgeo, | |
236 | .owner = THIS_MODULE | |
237 | }; | |
238 | ||
239 | /*** Information ***/ | |
240 | ||
241 | static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr) | |
242 | { | |
243 | struct device_attribute *dev_attr | |
244 | = container_of(attr, struct device_attribute, attr); | |
245 | return container_of(dev_attr, struct mspro_sys_attr, dev_attr); | |
246 | } | |
247 | ||
248 | static const char *mspro_block_attr_name(unsigned char tag) | |
249 | { | |
250 | switch (tag) { | |
251 | case MSPRO_BLOCK_ID_SYSINFO: | |
252 | return "attr_sysinfo"; | |
253 | case MSPRO_BLOCK_ID_MODELNAME: | |
254 | return "attr_modelname"; | |
255 | case MSPRO_BLOCK_ID_MBR: | |
256 | return "attr_mbr"; | |
257 | case MSPRO_BLOCK_ID_PBR16: | |
258 | return "attr_pbr16"; | |
259 | case MSPRO_BLOCK_ID_PBR32: | |
260 | return "attr_pbr32"; | |
261 | case MSPRO_BLOCK_ID_SPECFILEVALUES1: | |
262 | return "attr_specfilevalues1"; | |
263 | case MSPRO_BLOCK_ID_SPECFILEVALUES2: | |
264 | return "attr_specfilevalues2"; | |
265 | case MSPRO_BLOCK_ID_DEVINFO: | |
266 | return "attr_devinfo"; | |
267 | default: | |
268 | return NULL; | |
269 | }; | |
270 | } | |
271 | ||
272 | typedef ssize_t (*sysfs_show_t)(struct device *dev, | |
273 | struct device_attribute *attr, | |
274 | char *buffer); | |
275 | ||
276 | static ssize_t mspro_block_attr_show_default(struct device *dev, | |
277 | struct device_attribute *attr, | |
278 | char *buffer) | |
279 | { | |
280 | struct mspro_sys_attr *s_attr = container_of(attr, | |
281 | struct mspro_sys_attr, | |
282 | dev_attr); | |
283 | ||
284 | ssize_t cnt, rc = 0; | |
285 | ||
286 | for (cnt = 0; cnt < s_attr->size; cnt++) { | |
287 | if (cnt && !(cnt % 16)) { | |
288 | if (PAGE_SIZE - rc) | |
289 | buffer[rc++] = '\n'; | |
290 | } | |
291 | ||
292 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ", | |
293 | ((unsigned char *)s_attr->data)[cnt]); | |
294 | } | |
295 | return rc; | |
296 | } | |
297 | ||
298 | static ssize_t mspro_block_attr_show_sysinfo(struct device *dev, | |
299 | struct device_attribute *attr, | |
300 | char *buffer) | |
301 | { | |
302 | struct mspro_sys_attr *x_attr = container_of(attr, | |
303 | struct mspro_sys_attr, | |
304 | dev_attr); | |
305 | struct mspro_sys_info *x_sys = x_attr->data; | |
306 | ssize_t rc = 0; | |
251cc9b9 AD |
307 | int date_tz = 0, date_tz_f = 0; |
308 | ||
309 | if (x_sys->assembly_date[0] > 0x80U) { | |
310 | date_tz = (~x_sys->assembly_date[0]) + 1; | |
311 | date_tz_f = date_tz & 3; | |
312 | date_tz >>= 2; | |
313 | date_tz = -date_tz; | |
314 | date_tz_f *= 15; | |
315 | } else if (x_sys->assembly_date[0] < 0x80U) { | |
316 | date_tz = x_sys->assembly_date[0]; | |
317 | date_tz_f = date_tz & 3; | |
318 | date_tz >>= 2; | |
319 | date_tz_f *= 15; | |
320 | } | |
baf8532a AD |
321 | |
322 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n", | |
323 | x_sys->class); | |
324 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n", | |
325 | be16_to_cpu(x_sys->block_size)); | |
326 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n", | |
327 | be16_to_cpu(x_sys->block_count)); | |
328 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n", | |
329 | be16_to_cpu(x_sys->user_block_count)); | |
330 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n", | |
331 | be16_to_cpu(x_sys->page_size)); | |
332 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: " | |
251cc9b9 AD |
333 | "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n", |
334 | date_tz, date_tz_f, | |
baf8532a AD |
335 | be16_to_cpu(*(unsigned short *) |
336 | &x_sys->assembly_date[1]), | |
337 | x_sys->assembly_date[3], x_sys->assembly_date[4], | |
338 | x_sys->assembly_date[5], x_sys->assembly_date[6], | |
339 | x_sys->assembly_date[7]); | |
340 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n", | |
341 | be32_to_cpu(x_sys->serial_number)); | |
342 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, | |
343 | "assembly maker code: %x\n", | |
344 | x_sys->assembly_maker_code); | |
345 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: " | |
346 | "%02x%02x%02x\n", x_sys->assembly_model_code[0], | |
347 | x_sys->assembly_model_code[1], | |
348 | x_sys->assembly_model_code[2]); | |
349 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n", | |
350 | be16_to_cpu(x_sys->memory_maker_code)); | |
351 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n", | |
352 | be16_to_cpu(x_sys->memory_model_code)); | |
353 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n", | |
354 | x_sys->vcc); | |
355 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n", | |
356 | x_sys->vpp); | |
357 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n", | |
358 | be16_to_cpu(x_sys->controller_number)); | |
359 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, | |
360 | "controller function: %x\n", | |
361 | be16_to_cpu(x_sys->controller_function)); | |
362 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n", | |
363 | be16_to_cpu(x_sys->start_sector)); | |
364 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n", | |
365 | be16_to_cpu(x_sys->unit_size)); | |
366 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n", | |
367 | x_sys->ms_sub_class); | |
368 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n", | |
369 | x_sys->interface_type); | |
370 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n", | |
371 | be16_to_cpu(x_sys->controller_code)); | |
372 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n", | |
373 | x_sys->format_type); | |
374 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n", | |
375 | x_sys->device_type); | |
376 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n", | |
377 | x_sys->mspro_id); | |
378 | return rc; | |
379 | } | |
380 | ||
381 | static ssize_t mspro_block_attr_show_modelname(struct device *dev, | |
382 | struct device_attribute *attr, | |
383 | char *buffer) | |
384 | { | |
385 | struct mspro_sys_attr *s_attr = container_of(attr, | |
386 | struct mspro_sys_attr, | |
387 | dev_attr); | |
388 | ||
389 | return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data); | |
390 | } | |
391 | ||
392 | static ssize_t mspro_block_attr_show_mbr(struct device *dev, | |
393 | struct device_attribute *attr, | |
394 | char *buffer) | |
395 | { | |
396 | struct mspro_sys_attr *x_attr = container_of(attr, | |
397 | struct mspro_sys_attr, | |
398 | dev_attr); | |
399 | struct mspro_mbr *x_mbr = x_attr->data; | |
400 | ssize_t rc = 0; | |
401 | ||
402 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n", | |
403 | x_mbr->boot_partition); | |
404 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n", | |
405 | x_mbr->start_head); | |
406 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n", | |
407 | x_mbr->start_sector); | |
408 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n", | |
409 | x_mbr->start_cylinder); | |
410 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n", | |
411 | x_mbr->partition_type); | |
412 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n", | |
413 | x_mbr->end_head); | |
414 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n", | |
415 | x_mbr->end_sector); | |
416 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n", | |
417 | x_mbr->end_cylinder); | |
418 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n", | |
419 | x_mbr->start_sectors); | |
420 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, | |
421 | "sectors per partition: %x\n", | |
422 | x_mbr->sectors_per_partition); | |
423 | return rc; | |
424 | } | |
425 | ||
efb2742e AD |
426 | static ssize_t mspro_block_attr_show_specfile(struct device *dev, |
427 | struct device_attribute *attr, | |
428 | char *buffer) | |
429 | { | |
430 | struct mspro_sys_attr *x_attr = container_of(attr, | |
431 | struct mspro_sys_attr, | |
432 | dev_attr); | |
433 | struct mspro_specfile *x_spfile = x_attr->data; | |
434 | char name[9], ext[4]; | |
435 | ssize_t rc = 0; | |
436 | ||
437 | memcpy(name, x_spfile->name, 8); | |
438 | name[8] = 0; | |
439 | memcpy(ext, x_spfile->ext, 3); | |
440 | ext[3] = 0; | |
441 | ||
442 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name); | |
443 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext); | |
444 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n", | |
445 | x_spfile->attr); | |
446 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n", | |
447 | x_spfile->time >> 11, | |
448 | (x_spfile->time >> 5) & 0x3f, | |
449 | (x_spfile->time & 0x1f) * 2); | |
450 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n", | |
451 | (x_spfile->date >> 9) + 1980, | |
452 | (x_spfile->date >> 5) & 0xf, | |
453 | x_spfile->date & 0x1f); | |
454 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n", | |
455 | x_spfile->cluster); | |
456 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n", | |
457 | x_spfile->size); | |
458 | return rc; | |
459 | } | |
460 | ||
baf8532a AD |
461 | static ssize_t mspro_block_attr_show_devinfo(struct device *dev, |
462 | struct device_attribute *attr, | |
463 | char *buffer) | |
464 | { | |
465 | struct mspro_sys_attr *x_attr = container_of(attr, | |
466 | struct mspro_sys_attr, | |
467 | dev_attr); | |
468 | struct mspro_devinfo *x_devinfo = x_attr->data; | |
469 | ssize_t rc = 0; | |
470 | ||
471 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n", | |
472 | be16_to_cpu(x_devinfo->cylinders)); | |
473 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n", | |
474 | be16_to_cpu(x_devinfo->heads)); | |
475 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n", | |
476 | be16_to_cpu(x_devinfo->bytes_per_track)); | |
477 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n", | |
478 | be16_to_cpu(x_devinfo->bytes_per_sector)); | |
479 | rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n", | |
480 | be16_to_cpu(x_devinfo->sectors_per_track)); | |
481 | return rc; | |
482 | } | |
483 | ||
484 | static sysfs_show_t mspro_block_attr_show(unsigned char tag) | |
485 | { | |
486 | switch (tag) { | |
487 | case MSPRO_BLOCK_ID_SYSINFO: | |
488 | return mspro_block_attr_show_sysinfo; | |
489 | case MSPRO_BLOCK_ID_MODELNAME: | |
490 | return mspro_block_attr_show_modelname; | |
491 | case MSPRO_BLOCK_ID_MBR: | |
492 | return mspro_block_attr_show_mbr; | |
efb2742e AD |
493 | case MSPRO_BLOCK_ID_SPECFILEVALUES1: |
494 | case MSPRO_BLOCK_ID_SPECFILEVALUES2: | |
495 | return mspro_block_attr_show_specfile; | |
baf8532a AD |
496 | case MSPRO_BLOCK_ID_DEVINFO: |
497 | return mspro_block_attr_show_devinfo; | |
498 | default: | |
499 | return mspro_block_attr_show_default; | |
500 | } | |
501 | } | |
502 | ||
503 | /*** Protocol handlers ***/ | |
504 | ||
505 | /* | |
506 | * Functions prefixed with "h_" are protocol callbacks. They can be called from | |
507 | * interrupt context. Return value of 0 means that request processing is still | |
508 | * ongoing, while special error value of -EAGAIN means that current request is | |
509 | * finished (and request processor should come back some time later). | |
510 | */ | |
511 | ||
512 | static int h_mspro_block_req_init(struct memstick_dev *card, | |
513 | struct memstick_request **mrq) | |
514 | { | |
515 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
516 | ||
517 | *mrq = &card->current_mrq; | |
518 | card->next_request = msb->mrq_handler; | |
519 | return 0; | |
520 | } | |
521 | ||
522 | static int h_mspro_block_default(struct memstick_dev *card, | |
523 | struct memstick_request **mrq) | |
524 | { | |
525 | complete(&card->mrq_complete); | |
526 | if (!(*mrq)->error) | |
527 | return -EAGAIN; | |
528 | else | |
529 | return (*mrq)->error; | |
530 | } | |
531 | ||
532 | static int h_mspro_block_get_ro(struct memstick_dev *card, | |
533 | struct memstick_request **mrq) | |
534 | { | |
535 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
536 | ||
537 | if ((*mrq)->error) { | |
538 | complete(&card->mrq_complete); | |
539 | return (*mrq)->error; | |
540 | } | |
541 | ||
542 | if ((*mrq)->data[offsetof(struct ms_status_register, status0)] | |
543 | & MEMSTICK_STATUS0_WP) | |
544 | msb->read_only = 1; | |
545 | else | |
546 | msb->read_only = 0; | |
547 | ||
548 | complete(&card->mrq_complete); | |
549 | return -EAGAIN; | |
550 | } | |
551 | ||
552 | static int h_mspro_block_wait_for_ced(struct memstick_dev *card, | |
553 | struct memstick_request **mrq) | |
554 | { | |
555 | if ((*mrq)->error) { | |
556 | complete(&card->mrq_complete); | |
557 | return (*mrq)->error; | |
558 | } | |
559 | ||
560 | dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]); | |
561 | ||
562 | if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) { | |
563 | card->current_mrq.error = -EFAULT; | |
564 | complete(&card->mrq_complete); | |
565 | return card->current_mrq.error; | |
566 | } | |
567 | ||
568 | if (!((*mrq)->data[0] & MEMSTICK_INT_CED)) | |
569 | return 0; | |
570 | else { | |
571 | card->current_mrq.error = 0; | |
572 | complete(&card->mrq_complete); | |
573 | return -EAGAIN; | |
574 | } | |
575 | } | |
576 | ||
577 | static int h_mspro_block_transfer_data(struct memstick_dev *card, | |
578 | struct memstick_request **mrq) | |
579 | { | |
580 | struct memstick_host *host = card->host; | |
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 | complete(&card->mrq_complete); | |
588 | return (*mrq)->error; | |
589 | } | |
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)->get_int_reg = 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 (host->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]; | |
604 | has_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 | complete(&card->mrq_complete); | |
621 | return -EAGAIN; | |
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)->get_int_reg = 1; | |
650 | return 0; | |
651 | case MS_TPC_READ_LONG_DATA: | |
652 | case MS_TPC_WRITE_LONG_DATA: | |
653 | msb->current_page++; | |
654 | if (host->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 | /*** Data transfer ***/ | |
668 | ||
669 | static void mspro_block_process_request(struct memstick_dev *card, | |
670 | struct request *req) | |
671 | { | |
672 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
673 | struct mspro_param_register param; | |
674 | int rc, chunk, cnt; | |
675 | unsigned short page_count; | |
676 | sector_t t_sec; | |
677 | unsigned long flags; | |
678 | ||
679 | do { | |
680 | page_count = 0; | |
681 | msb->current_seg = 0; | |
682 | msb->seg_count = blk_rq_map_sg(req->q, req, msb->req_sg); | |
683 | ||
684 | if (msb->seg_count) { | |
685 | msb->current_page = 0; | |
686 | for (rc = 0; rc < msb->seg_count; rc++) | |
687 | page_count += msb->req_sg[rc].length | |
688 | / msb->page_size; | |
689 | ||
690 | t_sec = req->sector; | |
691 | sector_div(t_sec, msb->page_size >> 9); | |
692 | param.system = msb->system; | |
693 | param.data_count = cpu_to_be16(page_count); | |
694 | param.data_address = cpu_to_be32((uint32_t)t_sec); | |
e1f19995 | 695 | param.tpc_param = 0; |
baf8532a AD |
696 | |
697 | msb->data_dir = rq_data_dir(req); | |
698 | msb->transfer_cmd = msb->data_dir == READ | |
699 | ? MSPRO_CMD_READ_DATA | |
700 | : MSPRO_CMD_WRITE_DATA; | |
701 | ||
702 | dev_dbg(&card->dev, "data transfer: cmd %x, " | |
703 | "lba %x, count %x\n", msb->transfer_cmd, | |
704 | be32_to_cpu(param.data_address), | |
705 | page_count); | |
706 | ||
707 | card->next_request = h_mspro_block_req_init; | |
708 | msb->mrq_handler = h_mspro_block_transfer_data; | |
709 | memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, | |
710 | ¶m, sizeof(param)); | |
711 | memstick_new_req(card->host); | |
712 | wait_for_completion(&card->mrq_complete); | |
713 | rc = card->current_mrq.error; | |
714 | ||
715 | if (rc || (card->current_mrq.tpc == MSPRO_CMD_STOP)) { | |
716 | for (cnt = 0; cnt < msb->current_seg; cnt++) | |
717 | page_count += msb->req_sg[cnt].length | |
718 | / msb->page_size; | |
719 | ||
720 | if (msb->current_page) | |
721 | page_count += msb->current_page - 1; | |
722 | ||
723 | if (page_count && (msb->data_dir == READ)) | |
724 | rc = msb->page_size * page_count; | |
725 | else | |
726 | rc = -EIO; | |
727 | } else | |
728 | rc = msb->page_size * page_count; | |
729 | } else | |
730 | rc = -EFAULT; | |
731 | ||
732 | spin_lock_irqsave(&msb->q_lock, flags); | |
733 | if (rc >= 0) | |
734 | chunk = __blk_end_request(req, 0, rc); | |
735 | else | |
736 | chunk = __blk_end_request(req, rc, 0); | |
737 | ||
738 | dev_dbg(&card->dev, "end chunk %d, %d\n", rc, chunk); | |
739 | spin_unlock_irqrestore(&msb->q_lock, flags); | |
740 | } while (chunk); | |
741 | } | |
742 | ||
743 | static int mspro_block_has_request(struct mspro_block_data *msb) | |
744 | { | |
745 | int rc = 0; | |
746 | unsigned long flags; | |
747 | ||
748 | spin_lock_irqsave(&msb->q_lock, flags); | |
749 | if (kthread_should_stop() || msb->has_request) | |
750 | rc = 1; | |
751 | spin_unlock_irqrestore(&msb->q_lock, flags); | |
752 | return rc; | |
753 | } | |
754 | ||
755 | static int mspro_block_queue_thread(void *data) | |
756 | { | |
757 | struct memstick_dev *card = data; | |
758 | struct memstick_host *host = card->host; | |
759 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
760 | struct request *req; | |
761 | unsigned long flags; | |
762 | ||
763 | while (1) { | |
764 | wait_event(msb->q_wait, mspro_block_has_request(msb)); | |
765 | dev_dbg(&card->dev, "thread iter\n"); | |
766 | ||
767 | spin_lock_irqsave(&msb->q_lock, flags); | |
768 | req = elv_next_request(msb->queue); | |
769 | dev_dbg(&card->dev, "next req %p\n", req); | |
770 | if (!req) { | |
771 | msb->has_request = 0; | |
772 | if (kthread_should_stop()) { | |
773 | spin_unlock_irqrestore(&msb->q_lock, flags); | |
774 | break; | |
775 | } | |
776 | } else | |
777 | msb->has_request = 1; | |
778 | spin_unlock_irqrestore(&msb->q_lock, flags); | |
779 | ||
780 | if (req) { | |
781 | mutex_lock(&host->lock); | |
782 | mspro_block_process_request(card, req); | |
783 | mutex_unlock(&host->lock); | |
784 | } | |
785 | } | |
786 | dev_dbg(&card->dev, "thread finished\n"); | |
787 | return 0; | |
788 | } | |
789 | ||
790 | static void mspro_block_request(struct request_queue *q) | |
791 | { | |
792 | struct memstick_dev *card = q->queuedata; | |
793 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
794 | struct request *req = NULL; | |
795 | ||
796 | if (msb->q_thread) { | |
797 | msb->has_request = 1; | |
798 | wake_up_all(&msb->q_wait); | |
799 | } else { | |
800 | while ((req = elv_next_request(q)) != NULL) | |
801 | end_queued_request(req, -ENODEV); | |
802 | } | |
803 | } | |
804 | ||
805 | /*** Initialization ***/ | |
806 | ||
807 | static int mspro_block_wait_for_ced(struct memstick_dev *card) | |
808 | { | |
809 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
810 | ||
811 | card->next_request = h_mspro_block_req_init; | |
812 | msb->mrq_handler = h_mspro_block_wait_for_ced; | |
813 | memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1); | |
814 | memstick_new_req(card->host); | |
815 | wait_for_completion(&card->mrq_complete); | |
816 | return card->current_mrq.error; | |
817 | } | |
818 | ||
819 | static int mspro_block_switch_to_parallel(struct memstick_dev *card) | |
820 | { | |
821 | struct memstick_host *host = card->host; | |
822 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
823 | struct mspro_param_register param = { | |
59367258 | 824 | .system = MEMSTICK_SYS_PAR4, |
baf8532a AD |
825 | .data_count = 0, |
826 | .data_address = 0, | |
e1f19995 | 827 | .tpc_param = 0 |
baf8532a AD |
828 | }; |
829 | ||
830 | card->next_request = h_mspro_block_req_init; | |
831 | msb->mrq_handler = h_mspro_block_default; | |
832 | memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m, | |
833 | sizeof(param)); | |
834 | memstick_new_req(host); | |
835 | wait_for_completion(&card->mrq_complete); | |
836 | if (card->current_mrq.error) | |
837 | return card->current_mrq.error; | |
838 | ||
e1f19995 AD |
839 | msb->system = MEMSTICK_SYS_PAR4; |
840 | host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4); | |
baf8532a AD |
841 | |
842 | card->next_request = h_mspro_block_req_init; | |
843 | msb->mrq_handler = h_mspro_block_default; | |
844 | memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1); | |
845 | memstick_new_req(card->host); | |
846 | wait_for_completion(&card->mrq_complete); | |
847 | ||
848 | if (card->current_mrq.error) { | |
59367258 AD |
849 | msb->system = MEMSTICK_SYS_SERIAL; |
850 | host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF); | |
851 | msleep(1000); | |
852 | host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON); | |
baf8532a | 853 | host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL); |
59367258 AD |
854 | |
855 | if (memstick_set_rw_addr(card)) | |
856 | return card->current_mrq.error; | |
857 | ||
858 | param.system = msb->system; | |
859 | ||
860 | card->next_request = h_mspro_block_req_init; | |
861 | msb->mrq_handler = h_mspro_block_default; | |
862 | memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m, | |
863 | sizeof(param)); | |
864 | memstick_new_req(host); | |
865 | wait_for_completion(&card->mrq_complete); | |
866 | ||
baf8532a AD |
867 | return -EFAULT; |
868 | } | |
869 | ||
870 | return 0; | |
871 | } | |
872 | ||
873 | /* Memory allocated for attributes by this function should be freed by | |
874 | * mspro_block_data_clear, no matter if the initialization process succeded | |
875 | * or failed. | |
876 | */ | |
877 | static int mspro_block_read_attributes(struct memstick_dev *card) | |
878 | { | |
879 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
880 | struct mspro_param_register param = { | |
881 | .system = msb->system, | |
882 | .data_count = cpu_to_be16(1), | |
883 | .data_address = 0, | |
e1f19995 | 884 | .tpc_param = 0 |
baf8532a AD |
885 | }; |
886 | struct mspro_attribute *attr = NULL; | |
887 | struct mspro_sys_attr *s_attr = NULL; | |
888 | unsigned char *buffer = NULL; | |
889 | int cnt, rc, attr_count; | |
890 | unsigned int addr; | |
891 | unsigned short page_count; | |
892 | ||
893 | attr = kmalloc(msb->page_size, GFP_KERNEL); | |
894 | if (!attr) | |
895 | return -ENOMEM; | |
896 | ||
897 | sg_init_one(&msb->req_sg[0], attr, msb->page_size); | |
898 | msb->seg_count = 1; | |
899 | msb->current_seg = 0; | |
900 | msb->current_page = 0; | |
901 | msb->data_dir = READ; | |
902 | msb->transfer_cmd = MSPRO_CMD_READ_ATRB; | |
903 | ||
904 | card->next_request = h_mspro_block_req_init; | |
905 | msb->mrq_handler = h_mspro_block_transfer_data; | |
906 | memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m, | |
907 | sizeof(param)); | |
908 | memstick_new_req(card->host); | |
909 | wait_for_completion(&card->mrq_complete); | |
910 | if (card->current_mrq.error) { | |
911 | rc = card->current_mrq.error; | |
912 | goto out_free_attr; | |
913 | } | |
914 | ||
915 | if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) { | |
916 | printk(KERN_ERR "%s: unrecognized device signature %x\n", | |
917 | card->dev.bus_id, be16_to_cpu(attr->signature)); | |
918 | rc = -ENODEV; | |
919 | goto out_free_attr; | |
920 | } | |
921 | ||
922 | if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) { | |
923 | printk(KERN_WARNING "%s: way too many attribute entries\n", | |
924 | card->dev.bus_id); | |
925 | attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES; | |
926 | } else | |
927 | attr_count = attr->count; | |
928 | ||
929 | msb->attr_group.attrs = kzalloc((attr_count + 1) | |
930 | * sizeof(struct attribute), | |
931 | GFP_KERNEL); | |
932 | if (!msb->attr_group.attrs) { | |
933 | rc = -ENOMEM; | |
934 | goto out_free_attr; | |
935 | } | |
936 | msb->attr_group.name = "media_attributes"; | |
937 | ||
938 | buffer = kmalloc(msb->page_size, GFP_KERNEL); | |
939 | if (!buffer) { | |
940 | rc = -ENOMEM; | |
941 | goto out_free_attr; | |
942 | } | |
943 | memcpy(buffer, (char *)attr, msb->page_size); | |
944 | page_count = 1; | |
945 | ||
946 | for (cnt = 0; cnt < attr_count; ++cnt) { | |
947 | s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL); | |
948 | if (!s_attr) { | |
949 | rc = -ENOMEM; | |
950 | goto out_free_buffer; | |
951 | } | |
952 | ||
953 | msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr; | |
954 | addr = be32_to_cpu(attr->entries[cnt].address); | |
955 | rc = be32_to_cpu(attr->entries[cnt].size); | |
956 | dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, " | |
957 | "size %x\n", cnt, attr->entries[cnt].id, addr, rc); | |
958 | s_attr->id = attr->entries[cnt].id; | |
959 | if (mspro_block_attr_name(s_attr->id)) | |
960 | snprintf(s_attr->name, sizeof(s_attr->name), "%s", | |
961 | mspro_block_attr_name(attr->entries[cnt].id)); | |
962 | else | |
963 | snprintf(s_attr->name, sizeof(s_attr->name), | |
964 | "attr_x%02x", attr->entries[cnt].id); | |
965 | ||
966 | s_attr->dev_attr.attr.name = s_attr->name; | |
967 | s_attr->dev_attr.attr.mode = S_IRUGO; | |
968 | s_attr->dev_attr.attr.owner = THIS_MODULE; | |
969 | s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id); | |
970 | ||
971 | if (!rc) | |
972 | continue; | |
973 | ||
974 | s_attr->size = rc; | |
975 | s_attr->data = kmalloc(rc, GFP_KERNEL); | |
976 | if (!s_attr->data) { | |
977 | rc = -ENOMEM; | |
978 | goto out_free_buffer; | |
979 | } | |
980 | ||
981 | if (((addr / msb->page_size) | |
982 | == be32_to_cpu(param.data_address)) | |
983 | && (((addr + rc - 1) / msb->page_size) | |
984 | == be32_to_cpu(param.data_address))) { | |
985 | memcpy(s_attr->data, buffer + addr % msb->page_size, | |
986 | rc); | |
987 | continue; | |
988 | } | |
989 | ||
990 | if (page_count <= (rc / msb->page_size)) { | |
991 | kfree(buffer); | |
992 | page_count = (rc / msb->page_size) + 1; | |
993 | buffer = kmalloc(page_count * msb->page_size, | |
994 | GFP_KERNEL); | |
995 | if (!buffer) { | |
996 | rc = -ENOMEM; | |
997 | goto out_free_attr; | |
998 | } | |
999 | } | |
1000 | ||
1001 | param.system = msb->system; | |
1002 | param.data_count = cpu_to_be16((rc / msb->page_size) + 1); | |
1003 | param.data_address = cpu_to_be32(addr / msb->page_size); | |
e1f19995 | 1004 | param.tpc_param = 0; |
baf8532a AD |
1005 | |
1006 | sg_init_one(&msb->req_sg[0], buffer, | |
1007 | be16_to_cpu(param.data_count) * msb->page_size); | |
1008 | msb->seg_count = 1; | |
1009 | msb->current_seg = 0; | |
1010 | msb->current_page = 0; | |
1011 | msb->data_dir = READ; | |
1012 | msb->transfer_cmd = MSPRO_CMD_READ_ATRB; | |
1013 | ||
1014 | dev_dbg(&card->dev, "reading attribute pages %x, %x\n", | |
1015 | be32_to_cpu(param.data_address), | |
1016 | be16_to_cpu(param.data_count)); | |
1017 | ||
1018 | card->next_request = h_mspro_block_req_init; | |
1019 | msb->mrq_handler = h_mspro_block_transfer_data; | |
1020 | memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, | |
1021 | (char *)¶m, sizeof(param)); | |
1022 | memstick_new_req(card->host); | |
1023 | wait_for_completion(&card->mrq_complete); | |
1024 | if (card->current_mrq.error) { | |
1025 | rc = card->current_mrq.error; | |
1026 | goto out_free_buffer; | |
1027 | } | |
1028 | ||
1029 | memcpy(s_attr->data, buffer + addr % msb->page_size, rc); | |
1030 | } | |
1031 | ||
1032 | rc = 0; | |
1033 | out_free_buffer: | |
1034 | kfree(buffer); | |
1035 | out_free_attr: | |
1036 | kfree(attr); | |
1037 | return rc; | |
1038 | } | |
1039 | ||
1040 | static int mspro_block_init_card(struct memstick_dev *card) | |
1041 | { | |
1042 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
1043 | struct memstick_host *host = card->host; | |
1044 | int rc = 0; | |
1045 | ||
e1f19995 | 1046 | msb->system = MEMSTICK_SYS_SERIAL; |
baf8532a AD |
1047 | card->reg_addr.r_offset = offsetof(struct mspro_register, status); |
1048 | card->reg_addr.r_length = sizeof(struct ms_status_register); | |
1049 | card->reg_addr.w_offset = offsetof(struct mspro_register, param); | |
1050 | card->reg_addr.w_length = sizeof(struct mspro_param_register); | |
1051 | ||
1052 | if (memstick_set_rw_addr(card)) | |
1053 | return -EIO; | |
1054 | ||
e1f19995 | 1055 | if (host->caps & MEMSTICK_CAP_PAR4) { |
baf8532a AD |
1056 | if (mspro_block_switch_to_parallel(card)) |
1057 | printk(KERN_WARNING "%s: could not switch to " | |
1058 | "parallel interface\n", card->dev.bus_id); | |
1059 | } | |
1060 | ||
1061 | rc = mspro_block_wait_for_ced(card); | |
1062 | if (rc) | |
1063 | return rc; | |
1064 | dev_dbg(&card->dev, "card activated\n"); | |
1065 | ||
1066 | card->next_request = h_mspro_block_req_init; | |
1067 | msb->mrq_handler = h_mspro_block_get_ro; | |
1068 | memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL, | |
1069 | sizeof(struct ms_status_register)); | |
1070 | memstick_new_req(card->host); | |
1071 | wait_for_completion(&card->mrq_complete); | |
1072 | if (card->current_mrq.error) | |
1073 | return card->current_mrq.error; | |
1074 | ||
1075 | dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1); | |
1076 | ||
1077 | msb->page_size = 512; | |
1078 | rc = mspro_block_read_attributes(card); | |
1079 | if (rc) | |
1080 | return rc; | |
1081 | ||
1082 | dev_dbg(&card->dev, "attributes loaded\n"); | |
1083 | return 0; | |
1084 | ||
1085 | } | |
1086 | ||
1087 | static int mspro_block_init_disk(struct memstick_dev *card) | |
1088 | { | |
1089 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
1090 | struct memstick_host *host = card->host; | |
1091 | struct mspro_devinfo *dev_info = NULL; | |
1092 | struct mspro_sys_info *sys_info = NULL; | |
1093 | struct mspro_sys_attr *s_attr = NULL; | |
1094 | int rc, disk_id; | |
1095 | u64 limit = BLK_BOUNCE_HIGH; | |
1096 | unsigned long capacity; | |
1097 | ||
1098 | if (host->cdev.dev->dma_mask && *(host->cdev.dev->dma_mask)) | |
1099 | limit = *(host->cdev.dev->dma_mask); | |
1100 | ||
1101 | for (rc = 0; msb->attr_group.attrs[rc]; ++rc) { | |
1102 | s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]); | |
1103 | ||
1104 | if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO) | |
1105 | dev_info = s_attr->data; | |
1106 | else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO) | |
1107 | sys_info = s_attr->data; | |
1108 | } | |
1109 | ||
1110 | if (!dev_info || !sys_info) | |
1111 | return -ENODEV; | |
1112 | ||
1113 | msb->cylinders = be16_to_cpu(dev_info->cylinders); | |
1114 | msb->heads = be16_to_cpu(dev_info->heads); | |
1115 | msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track); | |
1116 | ||
1117 | msb->page_size = be16_to_cpu(sys_info->unit_size); | |
1118 | ||
1119 | if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL)) | |
1120 | return -ENOMEM; | |
1121 | ||
1122 | mutex_lock(&mspro_block_disk_lock); | |
1123 | rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id); | |
1124 | mutex_unlock(&mspro_block_disk_lock); | |
1125 | ||
1126 | if (rc) | |
1127 | return rc; | |
1128 | ||
1129 | if ((disk_id << MEMSTICK_PART_SHIFT) > 255) { | |
1130 | rc = -ENOSPC; | |
1131 | goto out_release_id; | |
1132 | } | |
1133 | ||
1134 | msb->disk = alloc_disk(1 << MEMSTICK_PART_SHIFT); | |
1135 | if (!msb->disk) { | |
1136 | rc = -ENOMEM; | |
1137 | goto out_release_id; | |
1138 | } | |
1139 | ||
1140 | spin_lock_init(&msb->q_lock); | |
1141 | init_waitqueue_head(&msb->q_wait); | |
1142 | ||
1143 | msb->queue = blk_init_queue(mspro_block_request, &msb->q_lock); | |
1144 | if (!msb->queue) { | |
1145 | rc = -ENOMEM; | |
1146 | goto out_put_disk; | |
1147 | } | |
1148 | ||
1149 | msb->queue->queuedata = card; | |
1150 | ||
1151 | blk_queue_bounce_limit(msb->queue, limit); | |
1152 | blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES); | |
1153 | blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS); | |
1154 | blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS); | |
1155 | blk_queue_max_segment_size(msb->queue, | |
1156 | MSPRO_BLOCK_MAX_PAGES * msb->page_size); | |
1157 | ||
1158 | msb->disk->major = major; | |
1159 | msb->disk->first_minor = disk_id << MEMSTICK_PART_SHIFT; | |
1160 | msb->disk->fops = &ms_block_bdops; | |
1161 | msb->usage_count = 1; | |
1162 | msb->disk->private_data = msb; | |
1163 | msb->disk->queue = msb->queue; | |
1164 | msb->disk->driverfs_dev = &card->dev; | |
1165 | ||
1166 | sprintf(msb->disk->disk_name, "mspblk%d", disk_id); | |
1167 | ||
1168 | blk_queue_hardsect_size(msb->queue, msb->page_size); | |
1169 | ||
1170 | capacity = be16_to_cpu(sys_info->user_block_count); | |
1171 | capacity *= be16_to_cpu(sys_info->block_size); | |
1172 | capacity *= msb->page_size >> 9; | |
1173 | set_capacity(msb->disk, capacity); | |
1174 | dev_dbg(&card->dev, "capacity set %ld\n", capacity); | |
1175 | msb->q_thread = kthread_run(mspro_block_queue_thread, card, | |
1176 | DRIVER_NAME"d"); | |
1177 | if (IS_ERR(msb->q_thread)) | |
1178 | goto out_put_disk; | |
1179 | ||
1180 | mutex_unlock(&host->lock); | |
1181 | add_disk(msb->disk); | |
1182 | mutex_lock(&host->lock); | |
1183 | msb->active = 1; | |
1184 | return 0; | |
1185 | ||
1186 | out_put_disk: | |
1187 | put_disk(msb->disk); | |
1188 | out_release_id: | |
1189 | mutex_lock(&mspro_block_disk_lock); | |
1190 | idr_remove(&mspro_block_disk_idr, disk_id); | |
1191 | mutex_unlock(&mspro_block_disk_lock); | |
1192 | return rc; | |
1193 | } | |
1194 | ||
1195 | static void mspro_block_data_clear(struct mspro_block_data *msb) | |
1196 | { | |
1197 | int cnt; | |
1198 | struct mspro_sys_attr *s_attr; | |
1199 | ||
1200 | if (msb->attr_group.attrs) { | |
1201 | for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) { | |
1202 | s_attr = mspro_from_sysfs_attr(msb->attr_group | |
1203 | .attrs[cnt]); | |
1204 | kfree(s_attr->data); | |
1205 | kfree(s_attr); | |
1206 | } | |
1207 | kfree(msb->attr_group.attrs); | |
1208 | } | |
1209 | ||
1210 | msb->card = NULL; | |
1211 | } | |
1212 | ||
1213 | static int mspro_block_check_card(struct memstick_dev *card) | |
1214 | { | |
1215 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
1216 | ||
1217 | return (msb->active == 1); | |
1218 | } | |
1219 | ||
1220 | static int mspro_block_probe(struct memstick_dev *card) | |
1221 | { | |
1222 | struct mspro_block_data *msb; | |
1223 | int rc = 0; | |
1224 | ||
1225 | msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL); | |
1226 | if (!msb) | |
1227 | return -ENOMEM; | |
1228 | memstick_set_drvdata(card, msb); | |
1229 | msb->card = card; | |
1230 | ||
1231 | rc = mspro_block_init_card(card); | |
1232 | ||
1233 | if (rc) | |
1234 | goto out_free; | |
1235 | ||
1236 | rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group); | |
1237 | if (rc) | |
1238 | goto out_free; | |
1239 | ||
1240 | rc = mspro_block_init_disk(card); | |
1241 | if (!rc) { | |
1242 | card->check = mspro_block_check_card; | |
1243 | return 0; | |
1244 | } | |
1245 | ||
1246 | sysfs_remove_group(&card->dev.kobj, &msb->attr_group); | |
1247 | out_free: | |
1248 | memstick_set_drvdata(card, NULL); | |
1249 | mspro_block_data_clear(msb); | |
1250 | kfree(msb); | |
1251 | return rc; | |
1252 | } | |
1253 | ||
1254 | static void mspro_block_remove(struct memstick_dev *card) | |
1255 | { | |
1256 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
1257 | struct task_struct *q_thread = NULL; | |
1258 | unsigned long flags; | |
1259 | ||
1260 | del_gendisk(msb->disk); | |
1261 | dev_dbg(&card->dev, "mspro block remove\n"); | |
1262 | spin_lock_irqsave(&msb->q_lock, flags); | |
1263 | q_thread = msb->q_thread; | |
1264 | msb->q_thread = NULL; | |
1265 | msb->active = 0; | |
1266 | spin_unlock_irqrestore(&msb->q_lock, flags); | |
1267 | ||
1268 | if (q_thread) { | |
1269 | mutex_unlock(&card->host->lock); | |
1270 | kthread_stop(q_thread); | |
1271 | mutex_lock(&card->host->lock); | |
1272 | } | |
1273 | ||
1274 | dev_dbg(&card->dev, "queue thread stopped\n"); | |
1275 | ||
1276 | blk_cleanup_queue(msb->queue); | |
1277 | ||
1278 | sysfs_remove_group(&card->dev.kobj, &msb->attr_group); | |
1279 | ||
1280 | mutex_lock(&mspro_block_disk_lock); | |
1281 | mspro_block_data_clear(msb); | |
1282 | mutex_unlock(&mspro_block_disk_lock); | |
1283 | ||
1284 | mspro_block_disk_release(msb->disk); | |
1285 | memstick_set_drvdata(card, NULL); | |
1286 | } | |
1287 | ||
1288 | #ifdef CONFIG_PM | |
1289 | ||
1290 | static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state) | |
1291 | { | |
1292 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
1293 | struct task_struct *q_thread = NULL; | |
1294 | unsigned long flags; | |
1295 | ||
1296 | spin_lock_irqsave(&msb->q_lock, flags); | |
1297 | q_thread = msb->q_thread; | |
1298 | msb->q_thread = NULL; | |
1299 | msb->active = 0; | |
1300 | blk_stop_queue(msb->queue); | |
1301 | spin_unlock_irqrestore(&msb->q_lock, flags); | |
1302 | ||
1303 | if (q_thread) | |
1304 | kthread_stop(q_thread); | |
1305 | ||
1306 | return 0; | |
1307 | } | |
1308 | ||
1309 | static int mspro_block_resume(struct memstick_dev *card) | |
1310 | { | |
1311 | struct mspro_block_data *msb = memstick_get_drvdata(card); | |
1312 | unsigned long flags; | |
1313 | int rc = 0; | |
1314 | ||
1315 | #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME | |
1316 | ||
1317 | struct mspro_block_data *new_msb; | |
1318 | struct memstick_host *host = card->host; | |
1319 | struct mspro_sys_attr *s_attr, *r_attr; | |
1320 | unsigned char cnt; | |
1321 | ||
1322 | mutex_lock(&host->lock); | |
1323 | new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL); | |
1324 | if (!new_msb) { | |
1325 | rc = -ENOMEM; | |
1326 | goto out_unlock; | |
1327 | } | |
1328 | ||
1329 | new_msb->card = card; | |
1330 | memstick_set_drvdata(card, new_msb); | |
1331 | if (mspro_block_init_card(card)) | |
1332 | goto out_free; | |
1333 | ||
1334 | for (cnt = 0; new_msb->attr_group.attrs[cnt] | |
1335 | && msb->attr_group.attrs[cnt]; ++cnt) { | |
1336 | s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]); | |
1337 | r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]); | |
1338 | ||
1339 | if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO | |
1340 | && r_attr->id == s_attr->id) { | |
1341 | if (memcmp(s_attr->data, r_attr->data, s_attr->size)) | |
1342 | break; | |
1343 | ||
1344 | memstick_set_drvdata(card, msb); | |
1345 | msb->q_thread = kthread_run(mspro_block_queue_thread, | |
1346 | card, DRIVER_NAME"d"); | |
1347 | if (IS_ERR(msb->q_thread)) | |
1348 | msb->q_thread = NULL; | |
1349 | else | |
1350 | msb->active = 1; | |
1351 | ||
1352 | break; | |
1353 | } | |
1354 | } | |
1355 | ||
1356 | out_free: | |
1357 | memstick_set_drvdata(card, msb); | |
1358 | mspro_block_data_clear(new_msb); | |
1359 | kfree(new_msb); | |
1360 | out_unlock: | |
1361 | mutex_unlock(&host->lock); | |
1362 | ||
1363 | #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */ | |
1364 | ||
1365 | spin_lock_irqsave(&msb->q_lock, flags); | |
1366 | blk_start_queue(msb->queue); | |
1367 | spin_unlock_irqrestore(&msb->q_lock, flags); | |
1368 | return rc; | |
1369 | } | |
1370 | ||
1371 | #else | |
1372 | ||
1373 | #define mspro_block_suspend NULL | |
1374 | #define mspro_block_resume NULL | |
1375 | ||
1376 | #endif /* CONFIG_PM */ | |
1377 | ||
1378 | static struct memstick_device_id mspro_block_id_tbl[] = { | |
1379 | {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO, | |
1380 | MEMSTICK_CLASS_GENERIC_DUO}, | |
1381 | {} | |
1382 | }; | |
1383 | ||
1384 | ||
1385 | static struct memstick_driver mspro_block_driver = { | |
1386 | .driver = { | |
1387 | .name = DRIVER_NAME, | |
1388 | .owner = THIS_MODULE | |
1389 | }, | |
1390 | .id_table = mspro_block_id_tbl, | |
1391 | .probe = mspro_block_probe, | |
1392 | .remove = mspro_block_remove, | |
1393 | .suspend = mspro_block_suspend, | |
1394 | .resume = mspro_block_resume | |
1395 | }; | |
1396 | ||
1397 | static int __init mspro_block_init(void) | |
1398 | { | |
1399 | int rc = -ENOMEM; | |
1400 | ||
1401 | rc = register_blkdev(major, DRIVER_NAME); | |
1402 | if (rc < 0) { | |
1403 | printk(KERN_ERR DRIVER_NAME ": failed to register " | |
1404 | "major %d, error %d\n", major, rc); | |
1405 | return rc; | |
1406 | } | |
1407 | if (!major) | |
1408 | major = rc; | |
1409 | ||
1410 | rc = memstick_register_driver(&mspro_block_driver); | |
1411 | if (rc) | |
1412 | unregister_blkdev(major, DRIVER_NAME); | |
1413 | return rc; | |
1414 | } | |
1415 | ||
1416 | static void __exit mspro_block_exit(void) | |
1417 | { | |
1418 | memstick_unregister_driver(&mspro_block_driver); | |
1419 | unregister_blkdev(major, DRIVER_NAME); | |
1420 | idr_destroy(&mspro_block_disk_idr); | |
1421 | } | |
1422 | ||
1423 | module_init(mspro_block_init); | |
1424 | module_exit(mspro_block_exit); | |
1425 | ||
1426 | MODULE_LICENSE("GPL"); | |
1427 | MODULE_AUTHOR("Alex Dubov"); | |
1428 | MODULE_DESCRIPTION("Sony MemoryStickPro block device driver"); | |
1429 | MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl); |