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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), \ | |
f61870ee | 49 | .driver_info = (flags) } |
70fcc005 | 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 | ||
191648d0 | 148 | usb_stor_dbg(us, "Result for send_command in status %d\n", result); |
1da177e4 LT |
149 | |
150 | if (result != USB_STOR_XFER_GOOD) { | |
151 | set_sense_info (4, 0, 0); /* hardware error */ | |
152 | return USB_STOR_TRANSPORT_ERROR; | |
153 | } | |
154 | ||
155 | result = sddr55_bulk_transport(us, | |
156 | DMA_FROM_DEVICE, status, 4); | |
157 | ||
158 | /* expect to get short transfer if no card fitted */ | |
159 | if (result == USB_STOR_XFER_SHORT || result == USB_STOR_XFER_STALLED) { | |
160 | /* had a short transfer, no card inserted, free map memory */ | |
1bc3c9e1 JJ |
161 | kfree(info->lba_to_pba); |
162 | kfree(info->pba_to_lba); | |
1da177e4 LT |
163 | info->lba_to_pba = NULL; |
164 | info->pba_to_lba = NULL; | |
165 | ||
166 | info->fatal_error = 0; | |
167 | info->force_read_only = 0; | |
168 | ||
169 | set_sense_info (2, 0x3a, 0); /* not ready, medium not present */ | |
170 | return USB_STOR_TRANSPORT_FAILED; | |
171 | } | |
172 | ||
173 | if (result != USB_STOR_XFER_GOOD) { | |
174 | set_sense_info (4, 0, 0); /* hardware error */ | |
175 | return USB_STOR_TRANSPORT_FAILED; | |
176 | } | |
177 | ||
178 | /* check write protect status */ | |
179 | info->read_only = (status[0] & 0x20); | |
180 | ||
181 | /* now read status */ | |
182 | result = sddr55_bulk_transport(us, | |
183 | DMA_FROM_DEVICE, status, 2); | |
184 | ||
185 | if (result != USB_STOR_XFER_GOOD) { | |
186 | set_sense_info (4, 0, 0); /* hardware error */ | |
187 | } | |
188 | ||
189 | return (result == USB_STOR_XFER_GOOD ? | |
190 | USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_FAILED); | |
191 | } | |
192 | ||
193 | ||
194 | static int sddr55_read_data(struct us_data *us, | |
195 | unsigned int lba, | |
196 | unsigned int page, | |
197 | unsigned short sectors) { | |
198 | ||
199 | int result = USB_STOR_TRANSPORT_GOOD; | |
200 | unsigned char *command = us->iobuf; | |
201 | unsigned char *status = us->iobuf; | |
202 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
203 | unsigned char *buffer; | |
204 | ||
205 | unsigned int pba; | |
206 | unsigned long address; | |
207 | ||
208 | unsigned short pages; | |
1f6f31a0 JA |
209 | unsigned int len, offset; |
210 | struct scatterlist *sg; | |
1da177e4 LT |
211 | |
212 | // Since we only read in one block at a time, we have to create | |
213 | // a bounce buffer and move the data a piece at a time between the | |
214 | // bounce buffer and the actual transfer buffer. | |
215 | ||
216 | len = min((unsigned int) sectors, (unsigned int) info->blocksize >> | |
217 | info->smallpageshift) * PAGESIZE; | |
218 | buffer = kmalloc(len, GFP_NOIO); | |
219 | if (buffer == NULL) | |
220 | return USB_STOR_TRANSPORT_ERROR; /* out of memory */ | |
1f6f31a0 JA |
221 | offset = 0; |
222 | sg = NULL; | |
1da177e4 LT |
223 | |
224 | while (sectors>0) { | |
225 | ||
226 | /* have we got to end? */ | |
227 | if (lba >= info->max_log_blks) | |
228 | break; | |
229 | ||
230 | pba = info->lba_to_pba[lba]; | |
231 | ||
232 | // Read as many sectors as possible in this block | |
233 | ||
234 | pages = min((unsigned int) sectors << info->smallpageshift, | |
235 | info->blocksize - page); | |
236 | len = pages << info->pageshift; | |
237 | ||
191648d0 JP |
238 | usb_stor_dbg(us, "Read %02X pages, from PBA %04X (LBA %04X) page %02X\n", |
239 | pages, pba, lba, page); | |
1da177e4 LT |
240 | |
241 | if (pba == NOT_ALLOCATED) { | |
242 | /* no pba for this lba, fill with zeroes */ | |
243 | memset (buffer, 0, len); | |
244 | } else { | |
245 | ||
246 | address = (pba << info->blockshift) + page; | |
247 | ||
248 | command[0] = 0; | |
249 | command[1] = LSB_of(address>>16); | |
250 | command[2] = LSB_of(address>>8); | |
251 | command[3] = LSB_of(address); | |
252 | ||
253 | command[4] = 0; | |
254 | command[5] = 0xB0; | |
255 | command[6] = LSB_of(pages << (1 - info->smallpageshift)); | |
256 | command[7] = 0x85; | |
257 | ||
258 | /* send command */ | |
259 | result = sddr55_bulk_transport(us, | |
260 | DMA_TO_DEVICE, command, 8); | |
261 | ||
191648d0 JP |
262 | usb_stor_dbg(us, "Result for send_command in read_data %d\n", |
263 | result); | |
1da177e4 LT |
264 | |
265 | if (result != USB_STOR_XFER_GOOD) { | |
266 | result = USB_STOR_TRANSPORT_ERROR; | |
267 | goto leave; | |
268 | } | |
269 | ||
270 | /* read data */ | |
271 | result = sddr55_bulk_transport(us, | |
272 | DMA_FROM_DEVICE, buffer, len); | |
273 | ||
274 | if (result != USB_STOR_XFER_GOOD) { | |
275 | result = USB_STOR_TRANSPORT_ERROR; | |
276 | goto leave; | |
277 | } | |
278 | ||
279 | /* now read status */ | |
280 | result = sddr55_bulk_transport(us, | |
281 | DMA_FROM_DEVICE, status, 2); | |
282 | ||
283 | if (result != USB_STOR_XFER_GOOD) { | |
284 | result = USB_STOR_TRANSPORT_ERROR; | |
285 | goto leave; | |
286 | } | |
287 | ||
288 | /* check status for error */ | |
289 | if (status[0] == 0xff && status[1] == 0x4) { | |
290 | set_sense_info (3, 0x11, 0); | |
291 | result = USB_STOR_TRANSPORT_FAILED; | |
292 | goto leave; | |
293 | } | |
294 | } | |
295 | ||
296 | // Store the data in the transfer buffer | |
297 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
1f6f31a0 | 298 | &sg, &offset, TO_XFER_BUF); |
1da177e4 LT |
299 | |
300 | page = 0; | |
301 | lba++; | |
302 | sectors -= pages >> info->smallpageshift; | |
303 | } | |
304 | ||
305 | result = USB_STOR_TRANSPORT_GOOD; | |
306 | ||
307 | leave: | |
308 | kfree(buffer); | |
309 | ||
310 | return result; | |
311 | } | |
312 | ||
313 | static int sddr55_write_data(struct us_data *us, | |
314 | unsigned int lba, | |
315 | unsigned int page, | |
316 | unsigned short sectors) { | |
317 | ||
318 | int result = USB_STOR_TRANSPORT_GOOD; | |
319 | unsigned char *command = us->iobuf; | |
320 | unsigned char *status = us->iobuf; | |
321 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
322 | unsigned char *buffer; | |
323 | ||
324 | unsigned int pba; | |
325 | unsigned int new_pba; | |
326 | unsigned long address; | |
327 | ||
328 | unsigned short pages; | |
329 | int i; | |
1f6f31a0 JA |
330 | unsigned int len, offset; |
331 | struct scatterlist *sg; | |
1da177e4 LT |
332 | |
333 | /* check if we are allowed to write */ | |
334 | if (info->read_only || info->force_read_only) { | |
335 | set_sense_info (7, 0x27, 0); /* read only */ | |
336 | return USB_STOR_TRANSPORT_FAILED; | |
337 | } | |
338 | ||
339 | // Since we only write one block at a time, we have to create | |
340 | // a bounce buffer and move the data a piece at a time between the | |
341 | // bounce buffer and the actual transfer buffer. | |
342 | ||
343 | len = min((unsigned int) sectors, (unsigned int) info->blocksize >> | |
344 | info->smallpageshift) * PAGESIZE; | |
345 | buffer = kmalloc(len, GFP_NOIO); | |
346 | if (buffer == NULL) | |
347 | return USB_STOR_TRANSPORT_ERROR; | |
1f6f31a0 JA |
348 | offset = 0; |
349 | sg = NULL; | |
1da177e4 LT |
350 | |
351 | while (sectors > 0) { | |
352 | ||
353 | /* have we got to end? */ | |
354 | if (lba >= info->max_log_blks) | |
355 | break; | |
356 | ||
357 | pba = info->lba_to_pba[lba]; | |
358 | ||
359 | // Write as many sectors as possible in this block | |
360 | ||
361 | pages = min((unsigned int) sectors << info->smallpageshift, | |
362 | info->blocksize - page); | |
363 | len = pages << info->pageshift; | |
364 | ||
365 | // Get the data from the transfer buffer | |
366 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
1f6f31a0 | 367 | &sg, &offset, FROM_XFER_BUF); |
1da177e4 | 368 | |
191648d0 JP |
369 | usb_stor_dbg(us, "Write %02X pages, to PBA %04X (LBA %04X) page %02X\n", |
370 | pages, pba, lba, page); | |
1da177e4 LT |
371 | |
372 | command[4] = 0; | |
373 | ||
374 | if (pba == NOT_ALLOCATED) { | |
375 | /* no pba allocated for this lba, find a free pba to use */ | |
376 | ||
377 | int max_pba = (info->max_log_blks / 250 ) * 256; | |
378 | int found_count = 0; | |
379 | int found_pba = -1; | |
380 | ||
381 | /* set pba to first block in zone lba is in */ | |
382 | pba = (lba / 1000) * 1024; | |
383 | ||
191648d0 | 384 | usb_stor_dbg(us, "No PBA for LBA %04X\n", lba); |
1da177e4 LT |
385 | |
386 | if (max_pba > 1024) | |
387 | max_pba = 1024; | |
388 | ||
389 | /* | |
390 | * Scan through the map looking for an unused block | |
391 | * leave 16 unused blocks at start (or as many as | |
392 | * possible) since the sddr55 seems to reuse a used | |
393 | * block when it shouldn't if we don't leave space. | |
394 | */ | |
395 | for (i = 0; i < max_pba; i++, pba++) { | |
396 | if (info->pba_to_lba[pba] == UNUSED_BLOCK) { | |
397 | found_pba = pba; | |
398 | if (found_count++ > 16) | |
399 | break; | |
400 | } | |
401 | } | |
402 | ||
403 | pba = found_pba; | |
404 | ||
405 | if (pba == -1) { | |
406 | /* oh dear */ | |
191648d0 | 407 | usb_stor_dbg(us, "Couldn't find unallocated block\n"); |
1da177e4 LT |
408 | |
409 | set_sense_info (3, 0x31, 0); /* medium error */ | |
410 | result = USB_STOR_TRANSPORT_FAILED; | |
411 | goto leave; | |
412 | } | |
413 | ||
191648d0 JP |
414 | usb_stor_dbg(us, "Allocating PBA %04X for LBA %04X\n", |
415 | pba, lba); | |
1da177e4 LT |
416 | |
417 | /* set writing to unallocated block flag */ | |
418 | command[4] = 0x40; | |
419 | } | |
420 | ||
421 | address = (pba << info->blockshift) + page; | |
422 | ||
423 | command[1] = LSB_of(address>>16); | |
424 | command[2] = LSB_of(address>>8); | |
425 | command[3] = LSB_of(address); | |
426 | ||
427 | /* set the lba into the command, modulo 1000 */ | |
428 | command[0] = LSB_of(lba % 1000); | |
429 | command[6] = MSB_of(lba % 1000); | |
430 | ||
431 | command[4] |= LSB_of(pages >> info->smallpageshift); | |
432 | command[5] = 0xB0; | |
433 | command[7] = 0x86; | |
434 | ||
435 | /* send command */ | |
436 | result = sddr55_bulk_transport(us, | |
437 | DMA_TO_DEVICE, command, 8); | |
438 | ||
439 | if (result != USB_STOR_XFER_GOOD) { | |
191648d0 JP |
440 | usb_stor_dbg(us, "Result for send_command in write_data %d\n", |
441 | result); | |
1da177e4 LT |
442 | |
443 | /* set_sense_info is superfluous here? */ | |
444 | set_sense_info (3, 0x3, 0);/* peripheral write error */ | |
445 | result = USB_STOR_TRANSPORT_FAILED; | |
446 | goto leave; | |
447 | } | |
448 | ||
449 | /* send the data */ | |
450 | result = sddr55_bulk_transport(us, | |
451 | DMA_TO_DEVICE, buffer, len); | |
452 | ||
453 | if (result != USB_STOR_XFER_GOOD) { | |
191648d0 JP |
454 | usb_stor_dbg(us, "Result for send_data in write_data %d\n", |
455 | result); | |
1da177e4 LT |
456 | |
457 | /* set_sense_info is superfluous here? */ | |
458 | set_sense_info (3, 0x3, 0);/* peripheral write error */ | |
459 | result = USB_STOR_TRANSPORT_FAILED; | |
460 | goto leave; | |
461 | } | |
462 | ||
463 | /* now read status */ | |
464 | result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, status, 6); | |
465 | ||
466 | if (result != USB_STOR_XFER_GOOD) { | |
191648d0 JP |
467 | usb_stor_dbg(us, "Result for get_status in write_data %d\n", |
468 | result); | |
1da177e4 LT |
469 | |
470 | /* set_sense_info is superfluous here? */ | |
471 | set_sense_info (3, 0x3, 0);/* peripheral write error */ | |
472 | result = USB_STOR_TRANSPORT_FAILED; | |
473 | goto leave; | |
474 | } | |
475 | ||
476 | new_pba = (status[3] + (status[4] << 8) + (status[5] << 16)) | |
477 | >> info->blockshift; | |
478 | ||
479 | /* check status for error */ | |
480 | if (status[0] == 0xff && status[1] == 0x4) { | |
481 | info->pba_to_lba[new_pba] = BAD_BLOCK; | |
482 | ||
483 | set_sense_info (3, 0x0c, 0); | |
484 | result = USB_STOR_TRANSPORT_FAILED; | |
485 | goto leave; | |
486 | } | |
487 | ||
191648d0 JP |
488 | usb_stor_dbg(us, "Updating maps for LBA %04X: old PBA %04X, new PBA %04X\n", |
489 | lba, pba, new_pba); | |
1da177e4 LT |
490 | |
491 | /* update the lba<->pba maps, note new_pba might be the same as pba */ | |
492 | info->lba_to_pba[lba] = new_pba; | |
493 | info->pba_to_lba[pba] = UNUSED_BLOCK; | |
494 | ||
495 | /* check that new_pba wasn't already being used */ | |
496 | if (info->pba_to_lba[new_pba] != UNUSED_BLOCK) { | |
497 | printk(KERN_ERR "sddr55 error: new PBA %04X already in use for LBA %04X\n", | |
498 | new_pba, info->pba_to_lba[new_pba]); | |
499 | info->fatal_error = 1; | |
500 | set_sense_info (3, 0x31, 0); | |
501 | result = USB_STOR_TRANSPORT_FAILED; | |
502 | goto leave; | |
503 | } | |
504 | ||
505 | /* update the pba<->lba maps for new_pba */ | |
506 | info->pba_to_lba[new_pba] = lba % 1000; | |
507 | ||
508 | page = 0; | |
509 | lba++; | |
510 | sectors -= pages >> info->smallpageshift; | |
511 | } | |
512 | result = USB_STOR_TRANSPORT_GOOD; | |
513 | ||
514 | leave: | |
515 | kfree(buffer); | |
516 | return result; | |
517 | } | |
518 | ||
519 | static int sddr55_read_deviceID(struct us_data *us, | |
520 | unsigned char *manufacturerID, | |
521 | unsigned char *deviceID) { | |
522 | ||
523 | int result; | |
524 | unsigned char *command = us->iobuf; | |
525 | unsigned char *content = us->iobuf; | |
526 | ||
527 | memset(command, 0, 8); | |
528 | command[5] = 0xB0; | |
529 | command[7] = 0x84; | |
530 | result = sddr55_bulk_transport(us, DMA_TO_DEVICE, command, 8); | |
531 | ||
191648d0 JP |
532 | usb_stor_dbg(us, "Result of send_control for device ID is %d\n", |
533 | result); | |
1da177e4 LT |
534 | |
535 | if (result != USB_STOR_XFER_GOOD) | |
536 | return USB_STOR_TRANSPORT_ERROR; | |
537 | ||
538 | result = sddr55_bulk_transport(us, | |
539 | DMA_FROM_DEVICE, content, 4); | |
540 | ||
541 | if (result != USB_STOR_XFER_GOOD) | |
542 | return USB_STOR_TRANSPORT_ERROR; | |
543 | ||
544 | *manufacturerID = content[0]; | |
545 | *deviceID = content[1]; | |
546 | ||
547 | if (content[0] != 0xff) { | |
548 | result = sddr55_bulk_transport(us, | |
549 | DMA_FROM_DEVICE, content, 2); | |
550 | } | |
551 | ||
552 | return USB_STOR_TRANSPORT_GOOD; | |
553 | } | |
554 | ||
555 | ||
70fcc005 AS |
556 | static int sddr55_reset(struct us_data *us) |
557 | { | |
1da177e4 LT |
558 | return 0; |
559 | } | |
560 | ||
561 | ||
562 | static unsigned long sddr55_get_capacity(struct us_data *us) { | |
563 | ||
8a20acc5 AM |
564 | unsigned char uninitialized_var(manufacturerID); |
565 | unsigned char uninitialized_var(deviceID); | |
1da177e4 LT |
566 | int result; |
567 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
568 | ||
191648d0 | 569 | usb_stor_dbg(us, "Reading capacity...\n"); |
1da177e4 LT |
570 | |
571 | result = sddr55_read_deviceID(us, | |
572 | &manufacturerID, | |
573 | &deviceID); | |
574 | ||
191648d0 | 575 | usb_stor_dbg(us, "Result of read_deviceID is %d\n", result); |
1da177e4 LT |
576 | |
577 | if (result != USB_STOR_XFER_GOOD) | |
578 | return 0; | |
579 | ||
191648d0 JP |
580 | usb_stor_dbg(us, "Device ID = %02X\n", deviceID); |
581 | usb_stor_dbg(us, "Manuf ID = %02X\n", manufacturerID); | |
1da177e4 LT |
582 | |
583 | info->pageshift = 9; | |
584 | info->smallpageshift = 0; | |
585 | info->blocksize = 16; | |
586 | info->blockshift = 4; | |
587 | info->blockmask = 15; | |
588 | ||
589 | switch (deviceID) { | |
590 | ||
591 | case 0x6e: // 1MB | |
592 | case 0xe8: | |
593 | case 0xec: | |
594 | info->pageshift = 8; | |
595 | info->smallpageshift = 1; | |
596 | return 0x00100000; | |
597 | ||
598 | case 0xea: // 2MB | |
599 | case 0x64: | |
600 | info->pageshift = 8; | |
601 | info->smallpageshift = 1; | |
602 | case 0x5d: // 5d is a ROM card with pagesize 512. | |
603 | return 0x00200000; | |
604 | ||
605 | case 0xe3: // 4MB | |
606 | case 0xe5: | |
607 | case 0x6b: | |
608 | case 0xd5: | |
609 | return 0x00400000; | |
610 | ||
611 | case 0xe6: // 8MB | |
612 | case 0xd6: | |
613 | return 0x00800000; | |
614 | ||
615 | case 0x73: // 16MB | |
616 | info->blocksize = 32; | |
617 | info->blockshift = 5; | |
618 | info->blockmask = 31; | |
619 | return 0x01000000; | |
620 | ||
621 | case 0x75: // 32MB | |
622 | info->blocksize = 32; | |
623 | info->blockshift = 5; | |
624 | info->blockmask = 31; | |
625 | return 0x02000000; | |
626 | ||
627 | case 0x76: // 64MB | |
628 | info->blocksize = 32; | |
629 | info->blockshift = 5; | |
630 | info->blockmask = 31; | |
631 | return 0x04000000; | |
632 | ||
633 | case 0x79: // 128MB | |
634 | info->blocksize = 32; | |
635 | info->blockshift = 5; | |
636 | info->blockmask = 31; | |
637 | return 0x08000000; | |
638 | ||
639 | default: // unknown | |
640 | return 0; | |
641 | ||
642 | } | |
643 | } | |
644 | ||
645 | static int sddr55_read_map(struct us_data *us) { | |
646 | ||
647 | struct sddr55_card_info *info = (struct sddr55_card_info *)(us->extra); | |
648 | int numblocks; | |
649 | unsigned char *buffer; | |
650 | unsigned char *command = us->iobuf; | |
651 | int i; | |
652 | unsigned short lba; | |
653 | unsigned short max_lba; | |
654 | int result; | |
655 | ||
656 | if (!info->capacity) | |
657 | return -1; | |
658 | ||
659 | numblocks = info->capacity >> (info->blockshift + info->pageshift); | |
660 | ||
661 | buffer = kmalloc( numblocks * 2, GFP_NOIO ); | |
662 | ||
663 | if (!buffer) | |
664 | return -1; | |
665 | ||
666 | memset(command, 0, 8); | |
667 | command[5] = 0xB0; | |
668 | command[6] = numblocks * 2 / 256; | |
669 | command[7] = 0x8A; | |
670 | ||
671 | result = sddr55_bulk_transport(us, DMA_TO_DEVICE, command, 8); | |
672 | ||
673 | if ( result != USB_STOR_XFER_GOOD) { | |
674 | kfree (buffer); | |
675 | return -1; | |
676 | } | |
677 | ||
678 | result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, buffer, numblocks * 2); | |
679 | ||
680 | if ( result != USB_STOR_XFER_GOOD) { | |
681 | kfree (buffer); | |
682 | return -1; | |
683 | } | |
684 | ||
685 | result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, command, 2); | |
686 | ||
687 | if ( result != USB_STOR_XFER_GOOD) { | |
688 | kfree (buffer); | |
689 | return -1; | |
690 | } | |
691 | ||
1bc3c9e1 JJ |
692 | kfree(info->lba_to_pba); |
693 | kfree(info->pba_to_lba); | |
1da177e4 LT |
694 | info->lba_to_pba = kmalloc(numblocks*sizeof(int), GFP_NOIO); |
695 | info->pba_to_lba = kmalloc(numblocks*sizeof(int), GFP_NOIO); | |
696 | ||
697 | if (info->lba_to_pba == NULL || info->pba_to_lba == NULL) { | |
1bc3c9e1 JJ |
698 | kfree(info->lba_to_pba); |
699 | kfree(info->pba_to_lba); | |
1da177e4 LT |
700 | info->lba_to_pba = NULL; |
701 | info->pba_to_lba = NULL; | |
702 | kfree(buffer); | |
703 | return -1; | |
704 | } | |
705 | ||
706 | memset(info->lba_to_pba, 0xff, numblocks*sizeof(int)); | |
707 | memset(info->pba_to_lba, 0xff, numblocks*sizeof(int)); | |
708 | ||
709 | /* set maximum lba */ | |
710 | max_lba = info->max_log_blks; | |
711 | if (max_lba > 1000) | |
712 | max_lba = 1000; | |
713 | ||
714 | // Each block is 64 bytes of control data, so block i is located in | |
715 | // scatterlist block i*64/128k = i*(2^6)*(2^-17) = i*(2^-11) | |
716 | ||
717 | for (i=0; i<numblocks; i++) { | |
718 | int zone = i / 1024; | |
719 | ||
720 | lba = short_pack(buffer[i * 2], buffer[i * 2 + 1]); | |
721 | ||
722 | /* Every 1024 physical blocks ("zone"), the LBA numbers | |
723 | * go back to zero, but are within a higher | |
724 | * block of LBA's. Also, there is a maximum of | |
725 | * 1000 LBA's per zone. In other words, in PBA | |
726 | * 1024-2047 you will find LBA 0-999 which are | |
727 | * really LBA 1000-1999. Yes, this wastes 24 | |
728 | * physical blocks per zone. Go figure. | |
729 | * These devices can have blocks go bad, so there | |
730 | * are 24 spare blocks to use when blocks do go bad. | |
731 | */ | |
732 | ||
733 | /* SDDR55 returns 0xffff for a bad block, and 0x400 for the | |
734 | * CIS block. (Is this true for cards 8MB or less??) | |
735 | * Record these in the physical to logical map | |
736 | */ | |
737 | ||
738 | info->pba_to_lba[i] = lba; | |
739 | ||
740 | if (lba >= max_lba) { | |
741 | continue; | |
742 | } | |
743 | ||
744 | if (info->lba_to_pba[lba + zone * 1000] != NOT_ALLOCATED && | |
745 | !info->force_read_only) { | |
6f8aa65b FS |
746 | printk(KERN_WARNING |
747 | "sddr55: map inconsistency at LBA %04X\n", | |
748 | lba + zone * 1000); | |
1da177e4 LT |
749 | info->force_read_only = 1; |
750 | } | |
751 | ||
752 | if (lba<0x10 || (lba>=0x3E0 && lba<0x3EF)) | |
191648d0 | 753 | usb_stor_dbg(us, "LBA %04X <-> PBA %04X\n", lba, i); |
1da177e4 LT |
754 | |
755 | info->lba_to_pba[lba + zone * 1000] = i; | |
756 | } | |
757 | ||
758 | kfree(buffer); | |
759 | return 0; | |
760 | } | |
761 | ||
762 | ||
763 | static void sddr55_card_info_destructor(void *extra) { | |
764 | struct sddr55_card_info *info = (struct sddr55_card_info *)extra; | |
765 | ||
766 | if (!extra) | |
767 | return; | |
768 | ||
1bc3c9e1 JJ |
769 | kfree(info->lba_to_pba); |
770 | kfree(info->pba_to_lba); | |
1da177e4 LT |
771 | } |
772 | ||
773 | ||
774 | /* | |
775 | * Transport for the Sandisk SDDR-55 | |
776 | */ | |
70fcc005 | 777 | static int sddr55_transport(struct scsi_cmnd *srb, struct us_data *us) |
1da177e4 LT |
778 | { |
779 | int result; | |
780 | static unsigned char inquiry_response[8] = { | |
781 | 0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00 | |
782 | }; | |
783 | // write-protected for now, no block descriptor support | |
784 | static unsigned char mode_page_01[20] = { | |
785 | 0x0, 0x12, 0x00, 0x80, 0x0, 0x0, 0x0, 0x0, | |
786 | 0x01, 0x0A, | |
787 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
788 | }; | |
789 | unsigned char *ptr = us->iobuf; | |
790 | unsigned long capacity; | |
791 | unsigned int lba; | |
792 | unsigned int pba; | |
793 | unsigned int page; | |
794 | unsigned short pages; | |
795 | struct sddr55_card_info *info; | |
796 | ||
797 | if (!us->extra) { | |
887c2560 | 798 | us->extra = kzalloc( |
1da177e4 LT |
799 | sizeof(struct sddr55_card_info), GFP_NOIO); |
800 | if (!us->extra) | |
801 | return USB_STOR_TRANSPORT_ERROR; | |
1da177e4 LT |
802 | us->extra_destructor = sddr55_card_info_destructor; |
803 | } | |
804 | ||
805 | info = (struct sddr55_card_info *)(us->extra); | |
806 | ||
807 | if (srb->cmnd[0] == REQUEST_SENSE) { | |
191648d0 JP |
808 | usb_stor_dbg(us, "request sense %02x/%02x/%02x\n", |
809 | info->sense_data[2], | |
810 | info->sense_data[12], | |
811 | info->sense_data[13]); | |
1da177e4 LT |
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 ) { | |
191648d0 | 895 | usb_stor_dbg(us, "Dummy up request for mode page 1\n"); |
1da177e4 LT |
896 | return USB_STOR_TRANSPORT_GOOD; |
897 | ||
898 | } else if ( (srb->cmnd[2] & 0x3F) == 0x3F ) { | |
191648d0 | 899 | usb_stor_dbg(us, "Dummy up request for all mode pages\n"); |
1da177e4 LT |
900 | return USB_STOR_TRANSPORT_GOOD; |
901 | } | |
902 | ||
903 | set_sense_info (5, 0x24, 0); /* invalid field in command */ | |
904 | return USB_STOR_TRANSPORT_FAILED; | |
905 | } | |
906 | ||
907 | if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) { | |
908 | ||
191648d0 JP |
909 | usb_stor_dbg(us, "%s medium removal. Not that I can do anything about it...\n", |
910 | (srb->cmnd[4]&0x03) ? "Prevent" : "Allow"); | |
1da177e4 LT |
911 | |
912 | return USB_STOR_TRANSPORT_GOOD; | |
913 | ||
914 | } | |
915 | ||
916 | if (srb->cmnd[0] == READ_10 || srb->cmnd[0] == WRITE_10) { | |
917 | ||
918 | page = short_pack(srb->cmnd[3], srb->cmnd[2]); | |
919 | page <<= 16; | |
920 | page |= short_pack(srb->cmnd[5], srb->cmnd[4]); | |
921 | pages = short_pack(srb->cmnd[8], srb->cmnd[7]); | |
922 | ||
923 | page <<= info->smallpageshift; | |
924 | ||
925 | // convert page to block and page-within-block | |
926 | ||
927 | lba = page >> info->blockshift; | |
928 | page = page & info->blockmask; | |
929 | ||
930 | // locate physical block corresponding to logical block | |
931 | ||
932 | if (lba >= info->max_log_blks) { | |
933 | ||
191648d0 JP |
934 | usb_stor_dbg(us, "Error: Requested LBA %04X exceeds maximum block %04X\n", |
935 | lba, info->max_log_blks - 1); | |
1da177e4 LT |
936 | |
937 | set_sense_info (5, 0x24, 0); /* invalid field in command */ | |
938 | ||
939 | return USB_STOR_TRANSPORT_FAILED; | |
940 | } | |
941 | ||
942 | pba = info->lba_to_pba[lba]; | |
943 | ||
944 | if (srb->cmnd[0] == WRITE_10) { | |
191648d0 JP |
945 | usb_stor_dbg(us, "WRITE_10: write block %04X (LBA %04X) page %01X pages %d\n", |
946 | pba, lba, page, pages); | |
1da177e4 LT |
947 | |
948 | return sddr55_write_data(us, lba, page, pages); | |
949 | } else { | |
191648d0 JP |
950 | usb_stor_dbg(us, "READ_10: read block %04X (LBA %04X) page %01X pages %d\n", |
951 | pba, lba, page, pages); | |
1da177e4 LT |
952 | |
953 | return sddr55_read_data(us, lba, page, pages); | |
954 | } | |
955 | } | |
956 | ||
957 | ||
958 | if (srb->cmnd[0] == TEST_UNIT_READY) { | |
959 | return USB_STOR_TRANSPORT_GOOD; | |
960 | } | |
961 | ||
962 | if (srb->cmnd[0] == START_STOP) { | |
963 | return USB_STOR_TRANSPORT_GOOD; | |
964 | } | |
965 | ||
966 | set_sense_info (5, 0x20, 0); /* illegal command */ | |
967 | ||
968 | return USB_STOR_TRANSPORT_FAILED; // FIXME: sense buffer? | |
969 | } | |
970 | ||
70fcc005 AS |
971 | |
972 | static int sddr55_probe(struct usb_interface *intf, | |
973 | const struct usb_device_id *id) | |
974 | { | |
975 | struct us_data *us; | |
976 | int result; | |
977 | ||
978 | result = usb_stor_probe1(&us, intf, id, | |
979 | (id - sddr55_usb_ids) + sddr55_unusual_dev_list); | |
980 | if (result) | |
981 | return result; | |
982 | ||
983 | us->transport_name = "SDDR55"; | |
984 | us->transport = sddr55_transport; | |
985 | us->transport_reset = sddr55_reset; | |
986 | us->max_lun = 0; | |
987 | ||
988 | result = usb_stor_probe2(us); | |
989 | return result; | |
990 | } | |
991 | ||
992 | static struct usb_driver sddr55_driver = { | |
993 | .name = "ums-sddr55", | |
994 | .probe = sddr55_probe, | |
995 | .disconnect = usb_stor_disconnect, | |
996 | .suspend = usb_stor_suspend, | |
997 | .resume = usb_stor_resume, | |
998 | .reset_resume = usb_stor_reset_resume, | |
999 | .pre_reset = usb_stor_pre_reset, | |
1000 | .post_reset = usb_stor_post_reset, | |
1001 | .id_table = sddr55_usb_ids, | |
1002 | .soft_unbind = 1, | |
e73b2db6 | 1003 | .no_dynamic_id = 1, |
70fcc005 AS |
1004 | }; |
1005 | ||
65db4305 | 1006 | module_usb_driver(sddr55_driver); |