]>
Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* Driver for SanDisk SDDR-55 SmartMedia reader |
1da177e4 LT |
2 | * |
3 | * SDDR55 driver v0.1: | |
4 | * | |
5 | * First release | |
6 | * | |
7 | * Current development and maintenance by: | |
8 | * (c) 2002 Simon Munton | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2, or (at your option) any | |
13 | * later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; if not, write to the Free Software Foundation, Inc., | |
22 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | */ | |
24 | ||
25 | #include <linux/jiffies.h> | |
26 | #include <linux/errno.h> | |
70fcc005 | 27 | #include <linux/module.h> |
1da177e4 LT |
28 | #include <linux/slab.h> |
29 | ||
30 | #include <scsi/scsi.h> | |
31 | #include <scsi/scsi_cmnd.h> | |
32 | ||
33 | #include "usb.h" | |
34 | #include "transport.h" | |
35 | #include "protocol.h" | |
36 | #include "debug.h" | |
70fcc005 | 37 | |
4246b06a MG |
38 | MODULE_DESCRIPTION("Driver for SanDisk SDDR-55 SmartMedia reader"); |
39 | MODULE_AUTHOR("Simon Munton"); | |
40 | MODULE_LICENSE("GPL"); | |
70fcc005 AS |
41 | |
42 | /* | |
43 | * The table of devices | |
44 | */ | |
45 | #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ | |
46 | vendorName, productName, useProtocol, useTransport, \ | |
47 | initFunction, flags) \ | |
48 | { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ | |
49 | .driver_info = (flags)|(USB_US_TYPE_STOR<<24) } | |
50 | ||
566b8bbf | 51 | static struct usb_device_id sddr55_usb_ids[] = { |
70fcc005 AS |
52 | # include "unusual_sddr55.h" |
53 | { } /* Terminating entry */ | |
54 | }; | |
55 | MODULE_DEVICE_TABLE(usb, sddr55_usb_ids); | |
56 | ||
57 | #undef UNUSUAL_DEV | |
58 | ||
59 | /* | |
60 | * The flags table | |
61 | */ | |
62 | #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ | |
63 | vendor_name, product_name, use_protocol, use_transport, \ | |
64 | init_function, Flags) \ | |
65 | { \ | |
66 | .vendorName = vendor_name, \ | |
67 | .productName = product_name, \ | |
68 | .useProtocol = use_protocol, \ | |
69 | .useTransport = use_transport, \ | |
70 | .initFunction = init_function, \ | |
71 | } | |
72 | ||
73 | static struct us_unusual_dev sddr55_unusual_dev_list[] = { | |
74 | # include "unusual_sddr55.h" | |
75 | { } /* Terminating entry */ | |
76 | }; | |
77 | ||
78 | #undef UNUSUAL_DEV | |
1da177e4 LT |
79 | |
80 | ||
81 | #define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) ) | |
82 | #define LSB_of(s) ((s)&0xFF) | |
83 | #define MSB_of(s) ((s)>>8) | |
84 | #define PAGESIZE 512 | |
85 | ||
86 | #define set_sense_info(sk, asc, ascq) \ | |
87 | do { \ | |
88 | info->sense_data[2] = sk; \ | |
89 | info->sense_data[12] = asc; \ | |
90 | info->sense_data[13] = ascq; \ | |
91 | } while (0) | |
92 | ||
93 | ||
94 | struct sddr55_card_info { | |
95 | unsigned long capacity; /* Size of card in bytes */ | |
96 | int max_log_blks; /* maximum number of logical blocks */ | |
97 | int pageshift; /* log2 of pagesize */ | |
98 | int smallpageshift; /* 1 if pagesize == 256 */ | |
99 | int blocksize; /* Size of block in pages */ | |
100 | int blockshift; /* log2 of blocksize */ | |
101 | int blockmask; /* 2^blockshift - 1 */ | |
102 | int read_only; /* non zero if card is write protected */ | |
103 | int force_read_only; /* non zero if we find a map error*/ | |
104 | int *lba_to_pba; /* logical to physical map */ | |
105 | int *pba_to_lba; /* physical to logical map */ | |
106 | int fatal_error; /* set if we detect something nasty */ | |
107 | unsigned long last_access; /* number of jiffies since we last talked to device */ | |
108 | unsigned char sense_data[18]; | |
109 | }; | |
110 | ||
111 | ||
112 | #define NOT_ALLOCATED 0xffffffff | |
113 | #define BAD_BLOCK 0xffff | |
114 | #define CIS_BLOCK 0x400 | |
115 | #define UNUSED_BLOCK 0x3ff | |
116 | ||
117 | static int | |
118 | sddr55_bulk_transport(struct us_data *us, int direction, | |
119 | unsigned char *data, unsigned int len) { | |
120 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
121 | unsigned int pipe = (direction == DMA_FROM_DEVICE) ? | |
122 | us->recv_bulk_pipe : us->send_bulk_pipe; | |
123 | ||
124 | if (!len) | |
125 | return USB_STOR_XFER_GOOD; | |
126 | info->last_access = jiffies; | |
127 | return usb_stor_bulk_transfer_buf(us, pipe, data, len, NULL); | |
128 | } | |
129 | ||
130 | /* check if card inserted, if there is, update read_only status | |
131 | * return non zero if no card | |
132 | */ | |
133 | ||
134 | static int sddr55_status(struct us_data *us) | |
135 | { | |
136 | int result; | |
137 | unsigned char *command = us->iobuf; | |
138 | unsigned char *status = us->iobuf; | |
139 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
140 | ||
141 | /* send command */ | |
142 | memset(command, 0, 8); | |
143 | command[5] = 0xB0; | |
144 | command[7] = 0x80; | |
145 | result = sddr55_bulk_transport(us, | |
146 | DMA_TO_DEVICE, command, 8); | |
147 | ||
148 | US_DEBUGP("Result for send_command in status %d\n", | |
149 | result); | |
150 | ||
151 | if (result != USB_STOR_XFER_GOOD) { | |
152 | set_sense_info (4, 0, 0); /* hardware error */ | |
153 | return USB_STOR_TRANSPORT_ERROR; | |
154 | } | |
155 | ||
156 | result = sddr55_bulk_transport(us, | |
157 | DMA_FROM_DEVICE, status, 4); | |
158 | ||
159 | /* expect to get short transfer if no card fitted */ | |
160 | if (result == USB_STOR_XFER_SHORT || result == USB_STOR_XFER_STALLED) { | |
161 | /* had a short transfer, no card inserted, free map memory */ | |
1bc3c9e1 JJ |
162 | kfree(info->lba_to_pba); |
163 | kfree(info->pba_to_lba); | |
1da177e4 LT |
164 | info->lba_to_pba = NULL; |
165 | info->pba_to_lba = NULL; | |
166 | ||
167 | info->fatal_error = 0; | |
168 | info->force_read_only = 0; | |
169 | ||
170 | set_sense_info (2, 0x3a, 0); /* not ready, medium not present */ | |
171 | return USB_STOR_TRANSPORT_FAILED; | |
172 | } | |
173 | ||
174 | if (result != USB_STOR_XFER_GOOD) { | |
175 | set_sense_info (4, 0, 0); /* hardware error */ | |
176 | return USB_STOR_TRANSPORT_FAILED; | |
177 | } | |
178 | ||
179 | /* check write protect status */ | |
180 | info->read_only = (status[0] & 0x20); | |
181 | ||
182 | /* now read status */ | |
183 | result = sddr55_bulk_transport(us, | |
184 | DMA_FROM_DEVICE, status, 2); | |
185 | ||
186 | if (result != USB_STOR_XFER_GOOD) { | |
187 | set_sense_info (4, 0, 0); /* hardware error */ | |
188 | } | |
189 | ||
190 | return (result == USB_STOR_XFER_GOOD ? | |
191 | USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_FAILED); | |
192 | } | |
193 | ||
194 | ||
195 | static int sddr55_read_data(struct us_data *us, | |
196 | unsigned int lba, | |
197 | unsigned int page, | |
198 | unsigned short sectors) { | |
199 | ||
200 | int result = USB_STOR_TRANSPORT_GOOD; | |
201 | unsigned char *command = us->iobuf; | |
202 | unsigned char *status = us->iobuf; | |
203 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
204 | unsigned char *buffer; | |
205 | ||
206 | unsigned int pba; | |
207 | unsigned long address; | |
208 | ||
209 | unsigned short pages; | |
1f6f31a0 JA |
210 | unsigned int len, offset; |
211 | struct scatterlist *sg; | |
1da177e4 LT |
212 | |
213 | // Since we only read in one block at a time, we have to create | |
214 | // a bounce buffer and move the data a piece at a time between the | |
215 | // bounce buffer and the actual transfer buffer. | |
216 | ||
217 | len = min((unsigned int) sectors, (unsigned int) info->blocksize >> | |
218 | info->smallpageshift) * PAGESIZE; | |
219 | buffer = kmalloc(len, GFP_NOIO); | |
220 | if (buffer == NULL) | |
221 | return USB_STOR_TRANSPORT_ERROR; /* out of memory */ | |
1f6f31a0 JA |
222 | offset = 0; |
223 | sg = NULL; | |
1da177e4 LT |
224 | |
225 | while (sectors>0) { | |
226 | ||
227 | /* have we got to end? */ | |
228 | if (lba >= info->max_log_blks) | |
229 | break; | |
230 | ||
231 | pba = info->lba_to_pba[lba]; | |
232 | ||
233 | // Read as many sectors as possible in this block | |
234 | ||
235 | pages = min((unsigned int) sectors << info->smallpageshift, | |
236 | info->blocksize - page); | |
237 | len = pages << info->pageshift; | |
238 | ||
239 | US_DEBUGP("Read %02X pages, from PBA %04X" | |
240 | " (LBA %04X) page %02X\n", | |
241 | pages, pba, lba, page); | |
242 | ||
243 | if (pba == NOT_ALLOCATED) { | |
244 | /* no pba for this lba, fill with zeroes */ | |
245 | memset (buffer, 0, len); | |
246 | } else { | |
247 | ||
248 | address = (pba << info->blockshift) + page; | |
249 | ||
250 | command[0] = 0; | |
251 | command[1] = LSB_of(address>>16); | |
252 | command[2] = LSB_of(address>>8); | |
253 | command[3] = LSB_of(address); | |
254 | ||
255 | command[4] = 0; | |
256 | command[5] = 0xB0; | |
257 | command[6] = LSB_of(pages << (1 - info->smallpageshift)); | |
258 | command[7] = 0x85; | |
259 | ||
260 | /* send command */ | |
261 | result = sddr55_bulk_transport(us, | |
262 | DMA_TO_DEVICE, command, 8); | |
263 | ||
264 | US_DEBUGP("Result for send_command in read_data %d\n", | |
265 | result); | |
266 | ||
267 | if (result != USB_STOR_XFER_GOOD) { | |
268 | result = USB_STOR_TRANSPORT_ERROR; | |
269 | goto leave; | |
270 | } | |
271 | ||
272 | /* read data */ | |
273 | result = sddr55_bulk_transport(us, | |
274 | DMA_FROM_DEVICE, buffer, len); | |
275 | ||
276 | if (result != USB_STOR_XFER_GOOD) { | |
277 | result = USB_STOR_TRANSPORT_ERROR; | |
278 | goto leave; | |
279 | } | |
280 | ||
281 | /* now read status */ | |
282 | result = sddr55_bulk_transport(us, | |
283 | DMA_FROM_DEVICE, status, 2); | |
284 | ||
285 | if (result != USB_STOR_XFER_GOOD) { | |
286 | result = USB_STOR_TRANSPORT_ERROR; | |
287 | goto leave; | |
288 | } | |
289 | ||
290 | /* check status for error */ | |
291 | if (status[0] == 0xff && status[1] == 0x4) { | |
292 | set_sense_info (3, 0x11, 0); | |
293 | result = USB_STOR_TRANSPORT_FAILED; | |
294 | goto leave; | |
295 | } | |
296 | } | |
297 | ||
298 | // Store the data in the transfer buffer | |
299 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
1f6f31a0 | 300 | &sg, &offset, TO_XFER_BUF); |
1da177e4 LT |
301 | |
302 | page = 0; | |
303 | lba++; | |
304 | sectors -= pages >> info->smallpageshift; | |
305 | } | |
306 | ||
307 | result = USB_STOR_TRANSPORT_GOOD; | |
308 | ||
309 | leave: | |
310 | kfree(buffer); | |
311 | ||
312 | return result; | |
313 | } | |
314 | ||
315 | static int sddr55_write_data(struct us_data *us, | |
316 | unsigned int lba, | |
317 | unsigned int page, | |
318 | unsigned short sectors) { | |
319 | ||
320 | int result = USB_STOR_TRANSPORT_GOOD; | |
321 | unsigned char *command = us->iobuf; | |
322 | unsigned char *status = us->iobuf; | |
323 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
324 | unsigned char *buffer; | |
325 | ||
326 | unsigned int pba; | |
327 | unsigned int new_pba; | |
328 | unsigned long address; | |
329 | ||
330 | unsigned short pages; | |
331 | int i; | |
1f6f31a0 JA |
332 | unsigned int len, offset; |
333 | struct scatterlist *sg; | |
1da177e4 LT |
334 | |
335 | /* check if we are allowed to write */ | |
336 | if (info->read_only || info->force_read_only) { | |
337 | set_sense_info (7, 0x27, 0); /* read only */ | |
338 | return USB_STOR_TRANSPORT_FAILED; | |
339 | } | |
340 | ||
341 | // Since we only write one block at a time, we have to create | |
342 | // a bounce buffer and move the data a piece at a time between the | |
343 | // bounce buffer and the actual transfer buffer. | |
344 | ||
345 | len = min((unsigned int) sectors, (unsigned int) info->blocksize >> | |
346 | info->smallpageshift) * PAGESIZE; | |
347 | buffer = kmalloc(len, GFP_NOIO); | |
348 | if (buffer == NULL) | |
349 | return USB_STOR_TRANSPORT_ERROR; | |
1f6f31a0 JA |
350 | offset = 0; |
351 | sg = NULL; | |
1da177e4 LT |
352 | |
353 | while (sectors > 0) { | |
354 | ||
355 | /* have we got to end? */ | |
356 | if (lba >= info->max_log_blks) | |
357 | break; | |
358 | ||
359 | pba = info->lba_to_pba[lba]; | |
360 | ||
361 | // Write as many sectors as possible in this block | |
362 | ||
363 | pages = min((unsigned int) sectors << info->smallpageshift, | |
364 | info->blocksize - page); | |
365 | len = pages << info->pageshift; | |
366 | ||
367 | // Get the data from the transfer buffer | |
368 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
1f6f31a0 | 369 | &sg, &offset, FROM_XFER_BUF); |
1da177e4 LT |
370 | |
371 | US_DEBUGP("Write %02X pages, to PBA %04X" | |
372 | " (LBA %04X) page %02X\n", | |
373 | pages, pba, lba, page); | |
374 | ||
375 | command[4] = 0; | |
376 | ||
377 | if (pba == NOT_ALLOCATED) { | |
378 | /* no pba allocated for this lba, find a free pba to use */ | |
379 | ||
380 | int max_pba = (info->max_log_blks / 250 ) * 256; | |
381 | int found_count = 0; | |
382 | int found_pba = -1; | |
383 | ||
384 | /* set pba to first block in zone lba is in */ | |
385 | pba = (lba / 1000) * 1024; | |
386 | ||
387 | US_DEBUGP("No PBA for LBA %04X\n",lba); | |
388 | ||
389 | if (max_pba > 1024) | |
390 | max_pba = 1024; | |
391 | ||
392 | /* | |
393 | * Scan through the map looking for an unused block | |
394 | * leave 16 unused blocks at start (or as many as | |
395 | * possible) since the sddr55 seems to reuse a used | |
396 | * block when it shouldn't if we don't leave space. | |
397 | */ | |
398 | for (i = 0; i < max_pba; i++, pba++) { | |
399 | if (info->pba_to_lba[pba] == UNUSED_BLOCK) { | |
400 | found_pba = pba; | |
401 | if (found_count++ > 16) | |
402 | break; | |
403 | } | |
404 | } | |
405 | ||
406 | pba = found_pba; | |
407 | ||
408 | if (pba == -1) { | |
409 | /* oh dear */ | |
410 | US_DEBUGP("Couldn't find unallocated block\n"); | |
411 | ||
412 | set_sense_info (3, 0x31, 0); /* medium error */ | |
413 | result = USB_STOR_TRANSPORT_FAILED; | |
414 | goto leave; | |
415 | } | |
416 | ||
417 | US_DEBUGP("Allocating PBA %04X for LBA %04X\n", pba, lba); | |
418 | ||
419 | /* set writing to unallocated block flag */ | |
420 | command[4] = 0x40; | |
421 | } | |
422 | ||
423 | address = (pba << info->blockshift) + page; | |
424 | ||
425 | command[1] = LSB_of(address>>16); | |
426 | command[2] = LSB_of(address>>8); | |
427 | command[3] = LSB_of(address); | |
428 | ||
429 | /* set the lba into the command, modulo 1000 */ | |
430 | command[0] = LSB_of(lba % 1000); | |
431 | command[6] = MSB_of(lba % 1000); | |
432 | ||
433 | command[4] |= LSB_of(pages >> info->smallpageshift); | |
434 | command[5] = 0xB0; | |
435 | command[7] = 0x86; | |
436 | ||
437 | /* send command */ | |
438 | result = sddr55_bulk_transport(us, | |
439 | DMA_TO_DEVICE, command, 8); | |
440 | ||
441 | if (result != USB_STOR_XFER_GOOD) { | |
442 | US_DEBUGP("Result for send_command in write_data %d\n", | |
443 | result); | |
444 | ||
445 | /* set_sense_info is superfluous here? */ | |
446 | set_sense_info (3, 0x3, 0);/* peripheral write error */ | |
447 | result = USB_STOR_TRANSPORT_FAILED; | |
448 | goto leave; | |
449 | } | |
450 | ||
451 | /* send the data */ | |
452 | result = sddr55_bulk_transport(us, | |
453 | DMA_TO_DEVICE, buffer, len); | |
454 | ||
455 | if (result != USB_STOR_XFER_GOOD) { | |
456 | US_DEBUGP("Result for send_data in write_data %d\n", | |
457 | result); | |
458 | ||
459 | /* set_sense_info is superfluous here? */ | |
460 | set_sense_info (3, 0x3, 0);/* peripheral write error */ | |
461 | result = USB_STOR_TRANSPORT_FAILED; | |
462 | goto leave; | |
463 | } | |
464 | ||
465 | /* now read status */ | |
466 | result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, status, 6); | |
467 | ||
468 | if (result != USB_STOR_XFER_GOOD) { | |
469 | US_DEBUGP("Result for get_status in write_data %d\n", | |
470 | result); | |
471 | ||
472 | /* set_sense_info is superfluous here? */ | |
473 | set_sense_info (3, 0x3, 0);/* peripheral write error */ | |
474 | result = USB_STOR_TRANSPORT_FAILED; | |
475 | goto leave; | |
476 | } | |
477 | ||
478 | new_pba = (status[3] + (status[4] << 8) + (status[5] << 16)) | |
479 | >> info->blockshift; | |
480 | ||
481 | /* check status for error */ | |
482 | if (status[0] == 0xff && status[1] == 0x4) { | |
483 | info->pba_to_lba[new_pba] = BAD_BLOCK; | |
484 | ||
485 | set_sense_info (3, 0x0c, 0); | |
486 | result = USB_STOR_TRANSPORT_FAILED; | |
487 | goto leave; | |
488 | } | |
489 | ||
490 | US_DEBUGP("Updating maps for LBA %04X: old PBA %04X, new PBA %04X\n", | |
491 | lba, pba, new_pba); | |
492 | ||
493 | /* update the lba<->pba maps, note new_pba might be the same as pba */ | |
494 | info->lba_to_pba[lba] = new_pba; | |
495 | info->pba_to_lba[pba] = UNUSED_BLOCK; | |
496 | ||
497 | /* check that new_pba wasn't already being used */ | |
498 | if (info->pba_to_lba[new_pba] != UNUSED_BLOCK) { | |
499 | printk(KERN_ERR "sddr55 error: new PBA %04X already in use for LBA %04X\n", | |
500 | new_pba, info->pba_to_lba[new_pba]); | |
501 | info->fatal_error = 1; | |
502 | set_sense_info (3, 0x31, 0); | |
503 | result = USB_STOR_TRANSPORT_FAILED; | |
504 | goto leave; | |
505 | } | |
506 | ||
507 | /* update the pba<->lba maps for new_pba */ | |
508 | info->pba_to_lba[new_pba] = lba % 1000; | |
509 | ||
510 | page = 0; | |
511 | lba++; | |
512 | sectors -= pages >> info->smallpageshift; | |
513 | } | |
514 | result = USB_STOR_TRANSPORT_GOOD; | |
515 | ||
516 | leave: | |
517 | kfree(buffer); | |
518 | return result; | |
519 | } | |
520 | ||
521 | static int sddr55_read_deviceID(struct us_data *us, | |
522 | unsigned char *manufacturerID, | |
523 | unsigned char *deviceID) { | |
524 | ||
525 | int result; | |
526 | unsigned char *command = us->iobuf; | |
527 | unsigned char *content = us->iobuf; | |
528 | ||
529 | memset(command, 0, 8); | |
530 | command[5] = 0xB0; | |
531 | command[7] = 0x84; | |
532 | result = sddr55_bulk_transport(us, DMA_TO_DEVICE, command, 8); | |
533 | ||
534 | US_DEBUGP("Result of send_control for device ID is %d\n", | |
535 | result); | |
536 | ||
537 | if (result != USB_STOR_XFER_GOOD) | |
538 | return USB_STOR_TRANSPORT_ERROR; | |
539 | ||
540 | result = sddr55_bulk_transport(us, | |
541 | DMA_FROM_DEVICE, content, 4); | |
542 | ||
543 | if (result != USB_STOR_XFER_GOOD) | |
544 | return USB_STOR_TRANSPORT_ERROR; | |
545 | ||
546 | *manufacturerID = content[0]; | |
547 | *deviceID = content[1]; | |
548 | ||
549 | if (content[0] != 0xff) { | |
550 | result = sddr55_bulk_transport(us, | |
551 | DMA_FROM_DEVICE, content, 2); | |
552 | } | |
553 | ||
554 | return USB_STOR_TRANSPORT_GOOD; | |
555 | } | |
556 | ||
557 | ||
70fcc005 AS |
558 | static int sddr55_reset(struct us_data *us) |
559 | { | |
1da177e4 LT |
560 | return 0; |
561 | } | |
562 | ||
563 | ||
564 | static unsigned long sddr55_get_capacity(struct us_data *us) { | |
565 | ||
8a20acc5 AM |
566 | unsigned char uninitialized_var(manufacturerID); |
567 | unsigned char uninitialized_var(deviceID); | |
1da177e4 LT |
568 | int result; |
569 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
570 | ||
571 | US_DEBUGP("Reading capacity...\n"); | |
572 | ||
573 | result = sddr55_read_deviceID(us, | |
574 | &manufacturerID, | |
575 | &deviceID); | |
576 | ||
577 | US_DEBUGP("Result of read_deviceID is %d\n", | |
578 | result); | |
579 | ||
580 | if (result != USB_STOR_XFER_GOOD) | |
581 | return 0; | |
582 | ||
583 | US_DEBUGP("Device ID = %02X\n", deviceID); | |
584 | US_DEBUGP("Manuf ID = %02X\n", manufacturerID); | |
585 | ||
586 | info->pageshift = 9; | |
587 | info->smallpageshift = 0; | |
588 | info->blocksize = 16; | |
589 | info->blockshift = 4; | |
590 | info->blockmask = 15; | |
591 | ||
592 | switch (deviceID) { | |
593 | ||
594 | case 0x6e: // 1MB | |
595 | case 0xe8: | |
596 | case 0xec: | |
597 | info->pageshift = 8; | |
598 | info->smallpageshift = 1; | |
599 | return 0x00100000; | |
600 | ||
601 | case 0xea: // 2MB | |
602 | case 0x64: | |
603 | info->pageshift = 8; | |
604 | info->smallpageshift = 1; | |
605 | case 0x5d: // 5d is a ROM card with pagesize 512. | |
606 | return 0x00200000; | |
607 | ||
608 | case 0xe3: // 4MB | |
609 | case 0xe5: | |
610 | case 0x6b: | |
611 | case 0xd5: | |
612 | return 0x00400000; | |
613 | ||
614 | case 0xe6: // 8MB | |
615 | case 0xd6: | |
616 | return 0x00800000; | |
617 | ||
618 | case 0x73: // 16MB | |
619 | info->blocksize = 32; | |
620 | info->blockshift = 5; | |
621 | info->blockmask = 31; | |
622 | return 0x01000000; | |
623 | ||
624 | case 0x75: // 32MB | |
625 | info->blocksize = 32; | |
626 | info->blockshift = 5; | |
627 | info->blockmask = 31; | |
628 | return 0x02000000; | |
629 | ||
630 | case 0x76: // 64MB | |
631 | info->blocksize = 32; | |
632 | info->blockshift = 5; | |
633 | info->blockmask = 31; | |
634 | return 0x04000000; | |
635 | ||
636 | case 0x79: // 128MB | |
637 | info->blocksize = 32; | |
638 | info->blockshift = 5; | |
639 | info->blockmask = 31; | |
640 | return 0x08000000; | |
641 | ||
642 | default: // unknown | |
643 | return 0; | |
644 | ||
645 | } | |
646 | } | |
647 | ||
648 | static int sddr55_read_map(struct us_data *us) { | |
649 | ||
650 | struct sddr55_card_info *info = (struct sddr55_card_info *)(us->extra); | |
651 | int numblocks; | |
652 | unsigned char *buffer; | |
653 | unsigned char *command = us->iobuf; | |
654 | int i; | |
655 | unsigned short lba; | |
656 | unsigned short max_lba; | |
657 | int result; | |
658 | ||
659 | if (!info->capacity) | |
660 | return -1; | |
661 | ||
662 | numblocks = info->capacity >> (info->blockshift + info->pageshift); | |
663 | ||
664 | buffer = kmalloc( numblocks * 2, GFP_NOIO ); | |
665 | ||
666 | if (!buffer) | |
667 | return -1; | |
668 | ||
669 | memset(command, 0, 8); | |
670 | command[5] = 0xB0; | |
671 | command[6] = numblocks * 2 / 256; | |
672 | command[7] = 0x8A; | |
673 | ||
674 | result = sddr55_bulk_transport(us, DMA_TO_DEVICE, command, 8); | |
675 | ||
676 | if ( result != USB_STOR_XFER_GOOD) { | |
677 | kfree (buffer); | |
678 | return -1; | |
679 | } | |
680 | ||
681 | result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, buffer, numblocks * 2); | |
682 | ||
683 | if ( result != USB_STOR_XFER_GOOD) { | |
684 | kfree (buffer); | |
685 | return -1; | |
686 | } | |
687 | ||
688 | result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, command, 2); | |
689 | ||
690 | if ( result != USB_STOR_XFER_GOOD) { | |
691 | kfree (buffer); | |
692 | return -1; | |
693 | } | |
694 | ||
1bc3c9e1 JJ |
695 | kfree(info->lba_to_pba); |
696 | kfree(info->pba_to_lba); | |
1da177e4 LT |
697 | info->lba_to_pba = kmalloc(numblocks*sizeof(int), GFP_NOIO); |
698 | info->pba_to_lba = kmalloc(numblocks*sizeof(int), GFP_NOIO); | |
699 | ||
700 | if (info->lba_to_pba == NULL || info->pba_to_lba == NULL) { | |
1bc3c9e1 JJ |
701 | kfree(info->lba_to_pba); |
702 | kfree(info->pba_to_lba); | |
1da177e4 LT |
703 | info->lba_to_pba = NULL; |
704 | info->pba_to_lba = NULL; | |
705 | kfree(buffer); | |
706 | return -1; | |
707 | } | |
708 | ||
709 | memset(info->lba_to_pba, 0xff, numblocks*sizeof(int)); | |
710 | memset(info->pba_to_lba, 0xff, numblocks*sizeof(int)); | |
711 | ||
712 | /* set maximum lba */ | |
713 | max_lba = info->max_log_blks; | |
714 | if (max_lba > 1000) | |
715 | max_lba = 1000; | |
716 | ||
717 | // Each block is 64 bytes of control data, so block i is located in | |
718 | // scatterlist block i*64/128k = i*(2^6)*(2^-17) = i*(2^-11) | |
719 | ||
720 | for (i=0; i<numblocks; i++) { | |
721 | int zone = i / 1024; | |
722 | ||
723 | lba = short_pack(buffer[i * 2], buffer[i * 2 + 1]); | |
724 | ||
725 | /* Every 1024 physical blocks ("zone"), the LBA numbers | |
726 | * go back to zero, but are within a higher | |
727 | * block of LBA's. Also, there is a maximum of | |
728 | * 1000 LBA's per zone. In other words, in PBA | |
729 | * 1024-2047 you will find LBA 0-999 which are | |
730 | * really LBA 1000-1999. Yes, this wastes 24 | |
731 | * physical blocks per zone. Go figure. | |
732 | * These devices can have blocks go bad, so there | |
733 | * are 24 spare blocks to use when blocks do go bad. | |
734 | */ | |
735 | ||
736 | /* SDDR55 returns 0xffff for a bad block, and 0x400 for the | |
737 | * CIS block. (Is this true for cards 8MB or less??) | |
738 | * Record these in the physical to logical map | |
739 | */ | |
740 | ||
741 | info->pba_to_lba[i] = lba; | |
742 | ||
743 | if (lba >= max_lba) { | |
744 | continue; | |
745 | } | |
746 | ||
747 | if (info->lba_to_pba[lba + zone * 1000] != NOT_ALLOCATED && | |
748 | !info->force_read_only) { | |
6f8aa65b FS |
749 | printk(KERN_WARNING |
750 | "sddr55: map inconsistency at LBA %04X\n", | |
751 | lba + zone * 1000); | |
1da177e4 LT |
752 | info->force_read_only = 1; |
753 | } | |
754 | ||
755 | if (lba<0x10 || (lba>=0x3E0 && lba<0x3EF)) | |
756 | US_DEBUGP("LBA %04X <-> PBA %04X\n", lba, i); | |
757 | ||
758 | info->lba_to_pba[lba + zone * 1000] = i; | |
759 | } | |
760 | ||
761 | kfree(buffer); | |
762 | return 0; | |
763 | } | |
764 | ||
765 | ||
766 | static void sddr55_card_info_destructor(void *extra) { | |
767 | struct sddr55_card_info *info = (struct sddr55_card_info *)extra; | |
768 | ||
769 | if (!extra) | |
770 | return; | |
771 | ||
1bc3c9e1 JJ |
772 | kfree(info->lba_to_pba); |
773 | kfree(info->pba_to_lba); | |
1da177e4 LT |
774 | } |
775 | ||
776 | ||
777 | /* | |
778 | * Transport for the Sandisk SDDR-55 | |
779 | */ | |
70fcc005 | 780 | static int sddr55_transport(struct scsi_cmnd *srb, struct us_data *us) |
1da177e4 LT |
781 | { |
782 | int result; | |
783 | static unsigned char inquiry_response[8] = { | |
784 | 0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00 | |
785 | }; | |
786 | // write-protected for now, no block descriptor support | |
787 | static unsigned char mode_page_01[20] = { | |
788 | 0x0, 0x12, 0x00, 0x80, 0x0, 0x0, 0x0, 0x0, | |
789 | 0x01, 0x0A, | |
790 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
791 | }; | |
792 | unsigned char *ptr = us->iobuf; | |
793 | unsigned long capacity; | |
794 | unsigned int lba; | |
795 | unsigned int pba; | |
796 | unsigned int page; | |
797 | unsigned short pages; | |
798 | struct sddr55_card_info *info; | |
799 | ||
800 | if (!us->extra) { | |
887c2560 | 801 | us->extra = kzalloc( |
1da177e4 LT |
802 | sizeof(struct sddr55_card_info), GFP_NOIO); |
803 | if (!us->extra) | |
804 | return USB_STOR_TRANSPORT_ERROR; | |
1da177e4 LT |
805 | us->extra_destructor = sddr55_card_info_destructor; |
806 | } | |
807 | ||
808 | info = (struct sddr55_card_info *)(us->extra); | |
809 | ||
810 | if (srb->cmnd[0] == REQUEST_SENSE) { | |
811 | US_DEBUGP("SDDR55: request sense %02x/%02x/%02x\n", info->sense_data[2], info->sense_data[12], info->sense_data[13]); | |
812 | ||
813 | memcpy (ptr, info->sense_data, sizeof info->sense_data); | |
814 | ptr[0] = 0x70; | |
815 | ptr[7] = 11; | |
816 | usb_stor_set_xfer_buf (ptr, sizeof info->sense_data, srb); | |
817 | memset (info->sense_data, 0, sizeof info->sense_data); | |
818 | ||
819 | return USB_STOR_TRANSPORT_GOOD; | |
820 | } | |
821 | ||
822 | memset (info->sense_data, 0, sizeof info->sense_data); | |
823 | ||
824 | /* Dummy up a response for INQUIRY since SDDR55 doesn't | |
825 | respond to INQUIRY commands */ | |
826 | ||
827 | if (srb->cmnd[0] == INQUIRY) { | |
828 | memcpy(ptr, inquiry_response, 8); | |
829 | fill_inquiry_response(us, ptr, 36); | |
830 | return USB_STOR_TRANSPORT_GOOD; | |
831 | } | |
832 | ||
833 | /* only check card status if the map isn't allocated, ie no card seen yet | |
834 | * or if it's been over half a second since we last accessed it | |
835 | */ | |
836 | if (info->lba_to_pba == NULL || time_after(jiffies, info->last_access + HZ/2)) { | |
837 | ||
838 | /* check to see if a card is fitted */ | |
839 | result = sddr55_status (us); | |
840 | if (result) { | |
841 | result = sddr55_status (us); | |
842 | if (!result) { | |
843 | set_sense_info (6, 0x28, 0); /* new media, set unit attention, not ready to ready */ | |
844 | } | |
845 | return USB_STOR_TRANSPORT_FAILED; | |
846 | } | |
847 | } | |
848 | ||
849 | /* if we detected a problem with the map when writing, | |
850 | don't allow any more access */ | |
851 | if (info->fatal_error) { | |
852 | ||
853 | set_sense_info (3, 0x31, 0); | |
854 | return USB_STOR_TRANSPORT_FAILED; | |
855 | } | |
856 | ||
857 | if (srb->cmnd[0] == READ_CAPACITY) { | |
858 | ||
859 | capacity = sddr55_get_capacity(us); | |
860 | ||
861 | if (!capacity) { | |
862 | set_sense_info (3, 0x30, 0); /* incompatible medium */ | |
863 | return USB_STOR_TRANSPORT_FAILED; | |
864 | } | |
865 | ||
866 | info->capacity = capacity; | |
867 | ||
868 | /* figure out the maximum logical block number, allowing for | |
869 | * the fact that only 250 out of every 256 are used */ | |
870 | info->max_log_blks = ((info->capacity >> (info->pageshift + info->blockshift)) / 256) * 250; | |
871 | ||
872 | /* Last page in the card, adjust as we only use 250 out of | |
873 | * every 256 pages */ | |
874 | capacity = (capacity / 256) * 250; | |
875 | ||
876 | capacity /= PAGESIZE; | |
877 | capacity--; | |
878 | ||
879 | ((__be32 *) ptr)[0] = cpu_to_be32(capacity); | |
880 | ((__be32 *) ptr)[1] = cpu_to_be32(PAGESIZE); | |
881 | usb_stor_set_xfer_buf(ptr, 8, srb); | |
882 | ||
883 | sddr55_read_map(us); | |
884 | ||
885 | return USB_STOR_TRANSPORT_GOOD; | |
886 | } | |
887 | ||
888 | if (srb->cmnd[0] == MODE_SENSE_10) { | |
889 | ||
890 | memcpy(ptr, mode_page_01, sizeof mode_page_01); | |
891 | ptr[3] = (info->read_only || info->force_read_only) ? 0x80 : 0; | |
892 | usb_stor_set_xfer_buf(ptr, sizeof(mode_page_01), srb); | |
893 | ||
894 | if ( (srb->cmnd[2] & 0x3F) == 0x01 ) { | |
895 | US_DEBUGP( | |
896 | "SDDR55: Dummy up request for mode page 1\n"); | |
897 | return USB_STOR_TRANSPORT_GOOD; | |
898 | ||
899 | } else if ( (srb->cmnd[2] & 0x3F) == 0x3F ) { | |
900 | US_DEBUGP( | |
901 | "SDDR55: Dummy up request for all mode pages\n"); | |
902 | return USB_STOR_TRANSPORT_GOOD; | |
903 | } | |
904 | ||
905 | set_sense_info (5, 0x24, 0); /* invalid field in command */ | |
906 | return USB_STOR_TRANSPORT_FAILED; | |
907 | } | |
908 | ||
909 | if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) { | |
910 | ||
911 | US_DEBUGP( | |
912 | "SDDR55: %s medium removal. Not that I can do" | |
913 | " anything about it...\n", | |
914 | (srb->cmnd[4]&0x03) ? "Prevent" : "Allow"); | |
915 | ||
916 | return USB_STOR_TRANSPORT_GOOD; | |
917 | ||
918 | } | |
919 | ||
920 | if (srb->cmnd[0] == READ_10 || srb->cmnd[0] == WRITE_10) { | |
921 | ||
922 | page = short_pack(srb->cmnd[3], srb->cmnd[2]); | |
923 | page <<= 16; | |
924 | page |= short_pack(srb->cmnd[5], srb->cmnd[4]); | |
925 | pages = short_pack(srb->cmnd[8], srb->cmnd[7]); | |
926 | ||
927 | page <<= info->smallpageshift; | |
928 | ||
929 | // convert page to block and page-within-block | |
930 | ||
931 | lba = page >> info->blockshift; | |
932 | page = page & info->blockmask; | |
933 | ||
934 | // locate physical block corresponding to logical block | |
935 | ||
936 | if (lba >= info->max_log_blks) { | |
937 | ||
938 | US_DEBUGP("Error: Requested LBA %04X exceeds maximum " | |
939 | "block %04X\n", lba, info->max_log_blks-1); | |
940 | ||
941 | set_sense_info (5, 0x24, 0); /* invalid field in command */ | |
942 | ||
943 | return USB_STOR_TRANSPORT_FAILED; | |
944 | } | |
945 | ||
946 | pba = info->lba_to_pba[lba]; | |
947 | ||
948 | if (srb->cmnd[0] == WRITE_10) { | |
949 | US_DEBUGP("WRITE_10: write block %04X (LBA %04X) page %01X" | |
950 | " pages %d\n", | |
951 | pba, lba, page, pages); | |
952 | ||
953 | return sddr55_write_data(us, lba, page, pages); | |
954 | } else { | |
955 | US_DEBUGP("READ_10: read block %04X (LBA %04X) page %01X" | |
956 | " pages %d\n", | |
957 | pba, lba, page, pages); | |
958 | ||
959 | return sddr55_read_data(us, lba, page, pages); | |
960 | } | |
961 | } | |
962 | ||
963 | ||
964 | if (srb->cmnd[0] == TEST_UNIT_READY) { | |
965 | return USB_STOR_TRANSPORT_GOOD; | |
966 | } | |
967 | ||
968 | if (srb->cmnd[0] == START_STOP) { | |
969 | return USB_STOR_TRANSPORT_GOOD; | |
970 | } | |
971 | ||
972 | set_sense_info (5, 0x20, 0); /* illegal command */ | |
973 | ||
974 | return USB_STOR_TRANSPORT_FAILED; // FIXME: sense buffer? | |
975 | } | |
976 | ||
70fcc005 AS |
977 | |
978 | static int sddr55_probe(struct usb_interface *intf, | |
979 | const struct usb_device_id *id) | |
980 | { | |
981 | struct us_data *us; | |
982 | int result; | |
983 | ||
984 | result = usb_stor_probe1(&us, intf, id, | |
985 | (id - sddr55_usb_ids) + sddr55_unusual_dev_list); | |
986 | if (result) | |
987 | return result; | |
988 | ||
989 | us->transport_name = "SDDR55"; | |
990 | us->transport = sddr55_transport; | |
991 | us->transport_reset = sddr55_reset; | |
992 | us->max_lun = 0; | |
993 | ||
994 | result = usb_stor_probe2(us); | |
995 | return result; | |
996 | } | |
997 | ||
998 | static struct usb_driver sddr55_driver = { | |
999 | .name = "ums-sddr55", | |
1000 | .probe = sddr55_probe, | |
1001 | .disconnect = usb_stor_disconnect, | |
1002 | .suspend = usb_stor_suspend, | |
1003 | .resume = usb_stor_resume, | |
1004 | .reset_resume = usb_stor_reset_resume, | |
1005 | .pre_reset = usb_stor_pre_reset, | |
1006 | .post_reset = usb_stor_post_reset, | |
1007 | .id_table = sddr55_usb_ids, | |
1008 | .soft_unbind = 1, | |
e73b2db6 | 1009 | .no_dynamic_id = 1, |
70fcc005 AS |
1010 | }; |
1011 | ||
65db4305 | 1012 | module_usb_driver(sddr55_driver); |