Commit | Line | Data |
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f0183a33 FB |
1 | /* |
2 | * Driver for SanDisk SDDR-55 SmartMedia reader | |
1da177e4 LT |
3 | * |
4 | * SDDR55 driver v0.1: | |
5 | * | |
6 | * First release | |
7 | * | |
8 | * Current development and maintenance by: | |
9 | * (c) 2002 Simon Munton | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2, or (at your option) any | |
14 | * later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License along | |
22 | * with this program; if not, write to the Free Software Foundation, Inc., | |
23 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | */ | |
25 | ||
26 | #include <linux/jiffies.h> | |
27 | #include <linux/errno.h> | |
70fcc005 | 28 | #include <linux/module.h> |
1da177e4 LT |
29 | #include <linux/slab.h> |
30 | ||
31 | #include <scsi/scsi.h> | |
32 | #include <scsi/scsi_cmnd.h> | |
33 | ||
34 | #include "usb.h" | |
35 | #include "transport.h" | |
36 | #include "protocol.h" | |
37 | #include "debug.h" | |
aa519be3 AM |
38 | #include "scsiglue.h" |
39 | ||
40 | #define DRV_NAME "ums-sddr55" | |
70fcc005 | 41 | |
4246b06a MG |
42 | MODULE_DESCRIPTION("Driver for SanDisk SDDR-55 SmartMedia reader"); |
43 | MODULE_AUTHOR("Simon Munton"); | |
44 | MODULE_LICENSE("GPL"); | |
70fcc005 AS |
45 | |
46 | /* | |
47 | * The table of devices | |
48 | */ | |
49 | #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ | |
50 | vendorName, productName, useProtocol, useTransport, \ | |
51 | initFunction, flags) \ | |
52 | { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ | |
f61870ee | 53 | .driver_info = (flags) } |
70fcc005 | 54 | |
566b8bbf | 55 | static struct usb_device_id sddr55_usb_ids[] = { |
70fcc005 AS |
56 | # include "unusual_sddr55.h" |
57 | { } /* Terminating entry */ | |
58 | }; | |
59 | MODULE_DEVICE_TABLE(usb, sddr55_usb_ids); | |
60 | ||
61 | #undef UNUSUAL_DEV | |
62 | ||
63 | /* | |
64 | * The flags table | |
65 | */ | |
66 | #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ | |
67 | vendor_name, product_name, use_protocol, use_transport, \ | |
68 | init_function, Flags) \ | |
69 | { \ | |
70 | .vendorName = vendor_name, \ | |
71 | .productName = product_name, \ | |
72 | .useProtocol = use_protocol, \ | |
73 | .useTransport = use_transport, \ | |
74 | .initFunction = init_function, \ | |
75 | } | |
76 | ||
77 | static struct us_unusual_dev sddr55_unusual_dev_list[] = { | |
78 | # include "unusual_sddr55.h" | |
79 | { } /* Terminating entry */ | |
80 | }; | |
81 | ||
82 | #undef UNUSUAL_DEV | |
1da177e4 LT |
83 | |
84 | ||
85 | #define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) ) | |
86 | #define LSB_of(s) ((s)&0xFF) | |
87 | #define MSB_of(s) ((s)>>8) | |
88 | #define PAGESIZE 512 | |
89 | ||
90 | #define set_sense_info(sk, asc, ascq) \ | |
91 | do { \ | |
92 | info->sense_data[2] = sk; \ | |
93 | info->sense_data[12] = asc; \ | |
94 | info->sense_data[13] = ascq; \ | |
95 | } while (0) | |
96 | ||
97 | ||
98 | struct sddr55_card_info { | |
99 | unsigned long capacity; /* Size of card in bytes */ | |
100 | int max_log_blks; /* maximum number of logical blocks */ | |
101 | int pageshift; /* log2 of pagesize */ | |
102 | int smallpageshift; /* 1 if pagesize == 256 */ | |
103 | int blocksize; /* Size of block in pages */ | |
104 | int blockshift; /* log2 of blocksize */ | |
105 | int blockmask; /* 2^blockshift - 1 */ | |
106 | int read_only; /* non zero if card is write protected */ | |
107 | int force_read_only; /* non zero if we find a map error*/ | |
108 | int *lba_to_pba; /* logical to physical map */ | |
109 | int *pba_to_lba; /* physical to logical map */ | |
110 | int fatal_error; /* set if we detect something nasty */ | |
111 | unsigned long last_access; /* number of jiffies since we last talked to device */ | |
112 | unsigned char sense_data[18]; | |
113 | }; | |
114 | ||
115 | ||
116 | #define NOT_ALLOCATED 0xffffffff | |
117 | #define BAD_BLOCK 0xffff | |
118 | #define CIS_BLOCK 0x400 | |
119 | #define UNUSED_BLOCK 0x3ff | |
120 | ||
121 | static int | |
122 | sddr55_bulk_transport(struct us_data *us, int direction, | |
123 | unsigned char *data, unsigned int len) { | |
124 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
125 | unsigned int pipe = (direction == DMA_FROM_DEVICE) ? | |
126 | us->recv_bulk_pipe : us->send_bulk_pipe; | |
127 | ||
128 | if (!len) | |
129 | return USB_STOR_XFER_GOOD; | |
130 | info->last_access = jiffies; | |
131 | return usb_stor_bulk_transfer_buf(us, pipe, data, len, NULL); | |
132 | } | |
133 | ||
f0183a33 FB |
134 | /* |
135 | * check if card inserted, if there is, update read_only status | |
1da177e4 LT |
136 | * return non zero if no card |
137 | */ | |
138 | ||
139 | static int sddr55_status(struct us_data *us) | |
140 | { | |
141 | int result; | |
142 | unsigned char *command = us->iobuf; | |
143 | unsigned char *status = us->iobuf; | |
144 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
145 | ||
146 | /* send command */ | |
147 | memset(command, 0, 8); | |
148 | command[5] = 0xB0; | |
149 | command[7] = 0x80; | |
150 | result = sddr55_bulk_transport(us, | |
151 | DMA_TO_DEVICE, command, 8); | |
152 | ||
191648d0 | 153 | usb_stor_dbg(us, "Result for send_command in status %d\n", result); |
1da177e4 LT |
154 | |
155 | if (result != USB_STOR_XFER_GOOD) { | |
156 | set_sense_info (4, 0, 0); /* hardware error */ | |
157 | return USB_STOR_TRANSPORT_ERROR; | |
158 | } | |
159 | ||
160 | result = sddr55_bulk_transport(us, | |
161 | DMA_FROM_DEVICE, status, 4); | |
162 | ||
163 | /* expect to get short transfer if no card fitted */ | |
164 | if (result == USB_STOR_XFER_SHORT || result == USB_STOR_XFER_STALLED) { | |
165 | /* had a short transfer, no card inserted, free map memory */ | |
1bc3c9e1 JJ |
166 | kfree(info->lba_to_pba); |
167 | kfree(info->pba_to_lba); | |
1da177e4 LT |
168 | info->lba_to_pba = NULL; |
169 | info->pba_to_lba = NULL; | |
170 | ||
171 | info->fatal_error = 0; | |
172 | info->force_read_only = 0; | |
173 | ||
174 | set_sense_info (2, 0x3a, 0); /* not ready, medium not present */ | |
175 | return USB_STOR_TRANSPORT_FAILED; | |
176 | } | |
177 | ||
178 | if (result != USB_STOR_XFER_GOOD) { | |
179 | set_sense_info (4, 0, 0); /* hardware error */ | |
180 | return USB_STOR_TRANSPORT_FAILED; | |
181 | } | |
182 | ||
183 | /* check write protect status */ | |
184 | info->read_only = (status[0] & 0x20); | |
185 | ||
186 | /* now read status */ | |
187 | result = sddr55_bulk_transport(us, | |
188 | DMA_FROM_DEVICE, status, 2); | |
189 | ||
190 | if (result != USB_STOR_XFER_GOOD) { | |
191 | set_sense_info (4, 0, 0); /* hardware error */ | |
192 | } | |
193 | ||
194 | return (result == USB_STOR_XFER_GOOD ? | |
195 | USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_FAILED); | |
196 | } | |
197 | ||
198 | ||
199 | static int sddr55_read_data(struct us_data *us, | |
200 | unsigned int lba, | |
201 | unsigned int page, | |
202 | unsigned short sectors) { | |
203 | ||
204 | int result = USB_STOR_TRANSPORT_GOOD; | |
205 | unsigned char *command = us->iobuf; | |
206 | unsigned char *status = us->iobuf; | |
207 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
208 | unsigned char *buffer; | |
209 | ||
210 | unsigned int pba; | |
211 | unsigned long address; | |
212 | ||
213 | unsigned short pages; | |
1f6f31a0 JA |
214 | unsigned int len, offset; |
215 | struct scatterlist *sg; | |
1da177e4 LT |
216 | |
217 | // Since we only read in one block at a time, we have to create | |
218 | // a bounce buffer and move the data a piece at a time between the | |
219 | // bounce buffer and the actual transfer buffer. | |
220 | ||
221 | len = min((unsigned int) sectors, (unsigned int) info->blocksize >> | |
222 | info->smallpageshift) * PAGESIZE; | |
223 | buffer = kmalloc(len, GFP_NOIO); | |
224 | if (buffer == NULL) | |
225 | return USB_STOR_TRANSPORT_ERROR; /* out of memory */ | |
1f6f31a0 JA |
226 | offset = 0; |
227 | sg = NULL; | |
1da177e4 LT |
228 | |
229 | while (sectors>0) { | |
230 | ||
231 | /* have we got to end? */ | |
232 | if (lba >= info->max_log_blks) | |
233 | break; | |
234 | ||
235 | pba = info->lba_to_pba[lba]; | |
236 | ||
237 | // Read as many sectors as possible in this block | |
238 | ||
239 | pages = min((unsigned int) sectors << info->smallpageshift, | |
240 | info->blocksize - page); | |
241 | len = pages << info->pageshift; | |
242 | ||
191648d0 JP |
243 | usb_stor_dbg(us, "Read %02X pages, from PBA %04X (LBA %04X) page %02X\n", |
244 | pages, pba, lba, page); | |
1da177e4 LT |
245 | |
246 | if (pba == NOT_ALLOCATED) { | |
247 | /* no pba for this lba, fill with zeroes */ | |
248 | memset (buffer, 0, len); | |
249 | } else { | |
250 | ||
251 | address = (pba << info->blockshift) + page; | |
252 | ||
253 | command[0] = 0; | |
254 | command[1] = LSB_of(address>>16); | |
255 | command[2] = LSB_of(address>>8); | |
256 | command[3] = LSB_of(address); | |
257 | ||
258 | command[4] = 0; | |
259 | command[5] = 0xB0; | |
260 | command[6] = LSB_of(pages << (1 - info->smallpageshift)); | |
261 | command[7] = 0x85; | |
262 | ||
263 | /* send command */ | |
264 | result = sddr55_bulk_transport(us, | |
265 | DMA_TO_DEVICE, command, 8); | |
266 | ||
191648d0 JP |
267 | usb_stor_dbg(us, "Result for send_command in read_data %d\n", |
268 | result); | |
1da177e4 LT |
269 | |
270 | if (result != USB_STOR_XFER_GOOD) { | |
271 | result = USB_STOR_TRANSPORT_ERROR; | |
272 | goto leave; | |
273 | } | |
274 | ||
275 | /* read data */ | |
276 | result = sddr55_bulk_transport(us, | |
277 | DMA_FROM_DEVICE, buffer, len); | |
278 | ||
279 | if (result != USB_STOR_XFER_GOOD) { | |
280 | result = USB_STOR_TRANSPORT_ERROR; | |
281 | goto leave; | |
282 | } | |
283 | ||
284 | /* now read status */ | |
285 | result = sddr55_bulk_transport(us, | |
286 | DMA_FROM_DEVICE, status, 2); | |
287 | ||
288 | if (result != USB_STOR_XFER_GOOD) { | |
289 | result = USB_STOR_TRANSPORT_ERROR; | |
290 | goto leave; | |
291 | } | |
292 | ||
293 | /* check status for error */ | |
294 | if (status[0] == 0xff && status[1] == 0x4) { | |
295 | set_sense_info (3, 0x11, 0); | |
296 | result = USB_STOR_TRANSPORT_FAILED; | |
297 | goto leave; | |
298 | } | |
299 | } | |
300 | ||
301 | // Store the data in the transfer buffer | |
302 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
1f6f31a0 | 303 | &sg, &offset, TO_XFER_BUF); |
1da177e4 LT |
304 | |
305 | page = 0; | |
306 | lba++; | |
307 | sectors -= pages >> info->smallpageshift; | |
308 | } | |
309 | ||
310 | result = USB_STOR_TRANSPORT_GOOD; | |
311 | ||
312 | leave: | |
313 | kfree(buffer); | |
314 | ||
315 | return result; | |
316 | } | |
317 | ||
318 | static int sddr55_write_data(struct us_data *us, | |
319 | unsigned int lba, | |
320 | unsigned int page, | |
321 | unsigned short sectors) { | |
322 | ||
323 | int result = USB_STOR_TRANSPORT_GOOD; | |
324 | unsigned char *command = us->iobuf; | |
325 | unsigned char *status = us->iobuf; | |
326 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
327 | unsigned char *buffer; | |
328 | ||
329 | unsigned int pba; | |
330 | unsigned int new_pba; | |
331 | unsigned long address; | |
332 | ||
333 | unsigned short pages; | |
334 | int i; | |
1f6f31a0 JA |
335 | unsigned int len, offset; |
336 | struct scatterlist *sg; | |
1da177e4 LT |
337 | |
338 | /* check if we are allowed to write */ | |
339 | if (info->read_only || info->force_read_only) { | |
340 | set_sense_info (7, 0x27, 0); /* read only */ | |
341 | return USB_STOR_TRANSPORT_FAILED; | |
342 | } | |
343 | ||
344 | // Since we only write one block at a time, we have to create | |
345 | // a bounce buffer and move the data a piece at a time between the | |
346 | // bounce buffer and the actual transfer buffer. | |
347 | ||
348 | len = min((unsigned int) sectors, (unsigned int) info->blocksize >> | |
349 | info->smallpageshift) * PAGESIZE; | |
350 | buffer = kmalloc(len, GFP_NOIO); | |
351 | if (buffer == NULL) | |
352 | return USB_STOR_TRANSPORT_ERROR; | |
1f6f31a0 JA |
353 | offset = 0; |
354 | sg = NULL; | |
1da177e4 LT |
355 | |
356 | while (sectors > 0) { | |
357 | ||
358 | /* have we got to end? */ | |
359 | if (lba >= info->max_log_blks) | |
360 | break; | |
361 | ||
362 | pba = info->lba_to_pba[lba]; | |
363 | ||
364 | // Write as many sectors as possible in this block | |
365 | ||
366 | pages = min((unsigned int) sectors << info->smallpageshift, | |
367 | info->blocksize - page); | |
368 | len = pages << info->pageshift; | |
369 | ||
370 | // Get the data from the transfer buffer | |
371 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
1f6f31a0 | 372 | &sg, &offset, FROM_XFER_BUF); |
1da177e4 | 373 | |
191648d0 JP |
374 | usb_stor_dbg(us, "Write %02X pages, to PBA %04X (LBA %04X) page %02X\n", |
375 | pages, pba, lba, page); | |
1da177e4 LT |
376 | |
377 | command[4] = 0; | |
378 | ||
379 | if (pba == NOT_ALLOCATED) { | |
380 | /* no pba allocated for this lba, find a free pba to use */ | |
381 | ||
382 | int max_pba = (info->max_log_blks / 250 ) * 256; | |
383 | int found_count = 0; | |
384 | int found_pba = -1; | |
385 | ||
386 | /* set pba to first block in zone lba is in */ | |
387 | pba = (lba / 1000) * 1024; | |
388 | ||
191648d0 | 389 | usb_stor_dbg(us, "No PBA for LBA %04X\n", lba); |
1da177e4 LT |
390 | |
391 | if (max_pba > 1024) | |
392 | max_pba = 1024; | |
393 | ||
394 | /* | |
395 | * Scan through the map looking for an unused block | |
396 | * leave 16 unused blocks at start (or as many as | |
397 | * possible) since the sddr55 seems to reuse a used | |
398 | * block when it shouldn't if we don't leave space. | |
399 | */ | |
400 | for (i = 0; i < max_pba; i++, pba++) { | |
401 | if (info->pba_to_lba[pba] == UNUSED_BLOCK) { | |
402 | found_pba = pba; | |
403 | if (found_count++ > 16) | |
404 | break; | |
405 | } | |
406 | } | |
407 | ||
408 | pba = found_pba; | |
409 | ||
410 | if (pba == -1) { | |
411 | /* oh dear */ | |
191648d0 | 412 | usb_stor_dbg(us, "Couldn't find unallocated block\n"); |
1da177e4 LT |
413 | |
414 | set_sense_info (3, 0x31, 0); /* medium error */ | |
415 | result = USB_STOR_TRANSPORT_FAILED; | |
416 | goto leave; | |
417 | } | |
418 | ||
191648d0 JP |
419 | usb_stor_dbg(us, "Allocating PBA %04X for LBA %04X\n", |
420 | pba, lba); | |
1da177e4 LT |
421 | |
422 | /* set writing to unallocated block flag */ | |
423 | command[4] = 0x40; | |
424 | } | |
425 | ||
426 | address = (pba << info->blockshift) + page; | |
427 | ||
428 | command[1] = LSB_of(address>>16); | |
429 | command[2] = LSB_of(address>>8); | |
430 | command[3] = LSB_of(address); | |
431 | ||
432 | /* set the lba into the command, modulo 1000 */ | |
433 | command[0] = LSB_of(lba % 1000); | |
434 | command[6] = MSB_of(lba % 1000); | |
435 | ||
436 | command[4] |= LSB_of(pages >> info->smallpageshift); | |
437 | command[5] = 0xB0; | |
438 | command[7] = 0x86; | |
439 | ||
440 | /* send command */ | |
441 | result = sddr55_bulk_transport(us, | |
442 | DMA_TO_DEVICE, command, 8); | |
443 | ||
444 | if (result != USB_STOR_XFER_GOOD) { | |
191648d0 JP |
445 | usb_stor_dbg(us, "Result for send_command in write_data %d\n", |
446 | result); | |
1da177e4 LT |
447 | |
448 | /* set_sense_info is superfluous here? */ | |
449 | set_sense_info (3, 0x3, 0);/* peripheral write error */ | |
450 | result = USB_STOR_TRANSPORT_FAILED; | |
451 | goto leave; | |
452 | } | |
453 | ||
454 | /* send the data */ | |
455 | result = sddr55_bulk_transport(us, | |
456 | DMA_TO_DEVICE, buffer, len); | |
457 | ||
458 | if (result != USB_STOR_XFER_GOOD) { | |
191648d0 JP |
459 | usb_stor_dbg(us, "Result for send_data in write_data %d\n", |
460 | result); | |
1da177e4 LT |
461 | |
462 | /* set_sense_info is superfluous here? */ | |
463 | set_sense_info (3, 0x3, 0);/* peripheral write error */ | |
464 | result = USB_STOR_TRANSPORT_FAILED; | |
465 | goto leave; | |
466 | } | |
467 | ||
468 | /* now read status */ | |
469 | result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, status, 6); | |
470 | ||
471 | if (result != USB_STOR_XFER_GOOD) { | |
191648d0 JP |
472 | usb_stor_dbg(us, "Result for get_status in write_data %d\n", |
473 | result); | |
1da177e4 LT |
474 | |
475 | /* set_sense_info is superfluous here? */ | |
476 | set_sense_info (3, 0x3, 0);/* peripheral write error */ | |
477 | result = USB_STOR_TRANSPORT_FAILED; | |
478 | goto leave; | |
479 | } | |
480 | ||
481 | new_pba = (status[3] + (status[4] << 8) + (status[5] << 16)) | |
482 | >> info->blockshift; | |
483 | ||
484 | /* check status for error */ | |
485 | if (status[0] == 0xff && status[1] == 0x4) { | |
486 | info->pba_to_lba[new_pba] = BAD_BLOCK; | |
487 | ||
488 | set_sense_info (3, 0x0c, 0); | |
489 | result = USB_STOR_TRANSPORT_FAILED; | |
490 | goto leave; | |
491 | } | |
492 | ||
191648d0 JP |
493 | usb_stor_dbg(us, "Updating maps for LBA %04X: old PBA %04X, new PBA %04X\n", |
494 | lba, pba, new_pba); | |
1da177e4 LT |
495 | |
496 | /* update the lba<->pba maps, note new_pba might be the same as pba */ | |
497 | info->lba_to_pba[lba] = new_pba; | |
498 | info->pba_to_lba[pba] = UNUSED_BLOCK; | |
499 | ||
500 | /* check that new_pba wasn't already being used */ | |
501 | if (info->pba_to_lba[new_pba] != UNUSED_BLOCK) { | |
502 | printk(KERN_ERR "sddr55 error: new PBA %04X already in use for LBA %04X\n", | |
503 | new_pba, info->pba_to_lba[new_pba]); | |
504 | info->fatal_error = 1; | |
505 | set_sense_info (3, 0x31, 0); | |
506 | result = USB_STOR_TRANSPORT_FAILED; | |
507 | goto leave; | |
508 | } | |
509 | ||
510 | /* update the pba<->lba maps for new_pba */ | |
511 | info->pba_to_lba[new_pba] = lba % 1000; | |
512 | ||
513 | page = 0; | |
514 | lba++; | |
515 | sectors -= pages >> info->smallpageshift; | |
516 | } | |
517 | result = USB_STOR_TRANSPORT_GOOD; | |
518 | ||
519 | leave: | |
520 | kfree(buffer); | |
521 | return result; | |
522 | } | |
523 | ||
524 | static int sddr55_read_deviceID(struct us_data *us, | |
525 | unsigned char *manufacturerID, | |
526 | unsigned char *deviceID) { | |
527 | ||
528 | int result; | |
529 | unsigned char *command = us->iobuf; | |
530 | unsigned char *content = us->iobuf; | |
531 | ||
532 | memset(command, 0, 8); | |
533 | command[5] = 0xB0; | |
534 | command[7] = 0x84; | |
535 | result = sddr55_bulk_transport(us, DMA_TO_DEVICE, command, 8); | |
536 | ||
191648d0 JP |
537 | usb_stor_dbg(us, "Result of send_control for device ID is %d\n", |
538 | result); | |
1da177e4 LT |
539 | |
540 | if (result != USB_STOR_XFER_GOOD) | |
541 | return USB_STOR_TRANSPORT_ERROR; | |
542 | ||
543 | result = sddr55_bulk_transport(us, | |
544 | DMA_FROM_DEVICE, content, 4); | |
545 | ||
546 | if (result != USB_STOR_XFER_GOOD) | |
547 | return USB_STOR_TRANSPORT_ERROR; | |
548 | ||
549 | *manufacturerID = content[0]; | |
550 | *deviceID = content[1]; | |
551 | ||
552 | if (content[0] != 0xff) { | |
553 | result = sddr55_bulk_transport(us, | |
554 | DMA_FROM_DEVICE, content, 2); | |
555 | } | |
556 | ||
557 | return USB_STOR_TRANSPORT_GOOD; | |
558 | } | |
559 | ||
560 | ||
70fcc005 AS |
561 | static int sddr55_reset(struct us_data *us) |
562 | { | |
1da177e4 LT |
563 | return 0; |
564 | } | |
565 | ||
566 | ||
567 | static unsigned long sddr55_get_capacity(struct us_data *us) { | |
568 | ||
8a20acc5 AM |
569 | unsigned char uninitialized_var(manufacturerID); |
570 | unsigned char uninitialized_var(deviceID); | |
1da177e4 LT |
571 | int result; |
572 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
573 | ||
191648d0 | 574 | usb_stor_dbg(us, "Reading capacity...\n"); |
1da177e4 LT |
575 | |
576 | result = sddr55_read_deviceID(us, | |
577 | &manufacturerID, | |
578 | &deviceID); | |
579 | ||
191648d0 | 580 | usb_stor_dbg(us, "Result of read_deviceID is %d\n", result); |
1da177e4 LT |
581 | |
582 | if (result != USB_STOR_XFER_GOOD) | |
583 | return 0; | |
584 | ||
191648d0 JP |
585 | usb_stor_dbg(us, "Device ID = %02X\n", deviceID); |
586 | usb_stor_dbg(us, "Manuf ID = %02X\n", manufacturerID); | |
1da177e4 LT |
587 | |
588 | info->pageshift = 9; | |
589 | info->smallpageshift = 0; | |
590 | info->blocksize = 16; | |
591 | info->blockshift = 4; | |
592 | info->blockmask = 15; | |
593 | ||
594 | switch (deviceID) { | |
595 | ||
596 | case 0x6e: // 1MB | |
597 | case 0xe8: | |
598 | case 0xec: | |
599 | info->pageshift = 8; | |
600 | info->smallpageshift = 1; | |
601 | return 0x00100000; | |
602 | ||
603 | case 0xea: // 2MB | |
604 | case 0x64: | |
605 | info->pageshift = 8; | |
606 | info->smallpageshift = 1; | |
607 | case 0x5d: // 5d is a ROM card with pagesize 512. | |
608 | return 0x00200000; | |
609 | ||
610 | case 0xe3: // 4MB | |
611 | case 0xe5: | |
612 | case 0x6b: | |
613 | case 0xd5: | |
614 | return 0x00400000; | |
615 | ||
616 | case 0xe6: // 8MB | |
617 | case 0xd6: | |
618 | return 0x00800000; | |
619 | ||
620 | case 0x73: // 16MB | |
621 | info->blocksize = 32; | |
622 | info->blockshift = 5; | |
623 | info->blockmask = 31; | |
624 | return 0x01000000; | |
625 | ||
626 | case 0x75: // 32MB | |
627 | info->blocksize = 32; | |
628 | info->blockshift = 5; | |
629 | info->blockmask = 31; | |
630 | return 0x02000000; | |
631 | ||
632 | case 0x76: // 64MB | |
633 | info->blocksize = 32; | |
634 | info->blockshift = 5; | |
635 | info->blockmask = 31; | |
636 | return 0x04000000; | |
637 | ||
638 | case 0x79: // 128MB | |
639 | info->blocksize = 32; | |
640 | info->blockshift = 5; | |
641 | info->blockmask = 31; | |
642 | return 0x08000000; | |
643 | ||
644 | default: // unknown | |
645 | return 0; | |
646 | ||
647 | } | |
648 | } | |
649 | ||
650 | static int sddr55_read_map(struct us_data *us) { | |
651 | ||
652 | struct sddr55_card_info *info = (struct sddr55_card_info *)(us->extra); | |
653 | int numblocks; | |
654 | unsigned char *buffer; | |
655 | unsigned char *command = us->iobuf; | |
656 | int i; | |
657 | unsigned short lba; | |
658 | unsigned short max_lba; | |
659 | int result; | |
660 | ||
661 | if (!info->capacity) | |
662 | return -1; | |
663 | ||
664 | numblocks = info->capacity >> (info->blockshift + info->pageshift); | |
665 | ||
666 | buffer = kmalloc( numblocks * 2, GFP_NOIO ); | |
667 | ||
668 | if (!buffer) | |
669 | return -1; | |
670 | ||
671 | memset(command, 0, 8); | |
672 | command[5] = 0xB0; | |
673 | command[6] = numblocks * 2 / 256; | |
674 | command[7] = 0x8A; | |
675 | ||
676 | result = sddr55_bulk_transport(us, DMA_TO_DEVICE, command, 8); | |
677 | ||
678 | if ( result != USB_STOR_XFER_GOOD) { | |
679 | kfree (buffer); | |
680 | return -1; | |
681 | } | |
682 | ||
683 | result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, buffer, numblocks * 2); | |
684 | ||
685 | if ( result != USB_STOR_XFER_GOOD) { | |
686 | kfree (buffer); | |
687 | return -1; | |
688 | } | |
689 | ||
690 | result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, command, 2); | |
691 | ||
692 | if ( result != USB_STOR_XFER_GOOD) { | |
693 | kfree (buffer); | |
694 | return -1; | |
695 | } | |
696 | ||
1bc3c9e1 JJ |
697 | kfree(info->lba_to_pba); |
698 | kfree(info->pba_to_lba); | |
1da177e4 LT |
699 | info->lba_to_pba = kmalloc(numblocks*sizeof(int), GFP_NOIO); |
700 | info->pba_to_lba = kmalloc(numblocks*sizeof(int), GFP_NOIO); | |
701 | ||
702 | if (info->lba_to_pba == NULL || info->pba_to_lba == NULL) { | |
1bc3c9e1 JJ |
703 | kfree(info->lba_to_pba); |
704 | kfree(info->pba_to_lba); | |
1da177e4 LT |
705 | info->lba_to_pba = NULL; |
706 | info->pba_to_lba = NULL; | |
707 | kfree(buffer); | |
708 | return -1; | |
709 | } | |
710 | ||
711 | memset(info->lba_to_pba, 0xff, numblocks*sizeof(int)); | |
712 | memset(info->pba_to_lba, 0xff, numblocks*sizeof(int)); | |
713 | ||
714 | /* set maximum lba */ | |
715 | max_lba = info->max_log_blks; | |
716 | if (max_lba > 1000) | |
717 | max_lba = 1000; | |
718 | ||
f0183a33 FB |
719 | /* |
720 | * Each block is 64 bytes of control data, so block i is located in | |
721 | * scatterlist block i*64/128k = i*(2^6)*(2^-17) = i*(2^-11) | |
722 | */ | |
1da177e4 LT |
723 | |
724 | for (i=0; i<numblocks; i++) { | |
725 | int zone = i / 1024; | |
726 | ||
727 | lba = short_pack(buffer[i * 2], buffer[i * 2 + 1]); | |
728 | ||
f0183a33 FB |
729 | /* |
730 | * Every 1024 physical blocks ("zone"), the LBA numbers | |
1da177e4 LT |
731 | * go back to zero, but are within a higher |
732 | * block of LBA's. Also, there is a maximum of | |
733 | * 1000 LBA's per zone. In other words, in PBA | |
734 | * 1024-2047 you will find LBA 0-999 which are | |
735 | * really LBA 1000-1999. Yes, this wastes 24 | |
736 | * physical blocks per zone. Go figure. | |
737 | * These devices can have blocks go bad, so there | |
738 | * are 24 spare blocks to use when blocks do go bad. | |
739 | */ | |
740 | ||
f0183a33 FB |
741 | /* |
742 | * SDDR55 returns 0xffff for a bad block, and 0x400 for the | |
1da177e4 LT |
743 | * CIS block. (Is this true for cards 8MB or less??) |
744 | * Record these in the physical to logical map | |
745 | */ | |
746 | ||
747 | info->pba_to_lba[i] = lba; | |
748 | ||
749 | if (lba >= max_lba) { | |
750 | continue; | |
751 | } | |
752 | ||
753 | if (info->lba_to_pba[lba + zone * 1000] != NOT_ALLOCATED && | |
754 | !info->force_read_only) { | |
6f8aa65b FS |
755 | printk(KERN_WARNING |
756 | "sddr55: map inconsistency at LBA %04X\n", | |
757 | lba + zone * 1000); | |
1da177e4 LT |
758 | info->force_read_only = 1; |
759 | } | |
760 | ||
761 | if (lba<0x10 || (lba>=0x3E0 && lba<0x3EF)) | |
191648d0 | 762 | usb_stor_dbg(us, "LBA %04X <-> PBA %04X\n", lba, i); |
1da177e4 LT |
763 | |
764 | info->lba_to_pba[lba + zone * 1000] = i; | |
765 | } | |
766 | ||
767 | kfree(buffer); | |
768 | return 0; | |
769 | } | |
770 | ||
771 | ||
772 | static void sddr55_card_info_destructor(void *extra) { | |
773 | struct sddr55_card_info *info = (struct sddr55_card_info *)extra; | |
774 | ||
775 | if (!extra) | |
776 | return; | |
777 | ||
1bc3c9e1 JJ |
778 | kfree(info->lba_to_pba); |
779 | kfree(info->pba_to_lba); | |
1da177e4 LT |
780 | } |
781 | ||
782 | ||
783 | /* | |
784 | * Transport for the Sandisk SDDR-55 | |
785 | */ | |
70fcc005 | 786 | static int sddr55_transport(struct scsi_cmnd *srb, struct us_data *us) |
1da177e4 LT |
787 | { |
788 | int result; | |
789 | static unsigned char inquiry_response[8] = { | |
790 | 0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00 | |
791 | }; | |
792 | // write-protected for now, no block descriptor support | |
793 | static unsigned char mode_page_01[20] = { | |
794 | 0x0, 0x12, 0x00, 0x80, 0x0, 0x0, 0x0, 0x0, | |
795 | 0x01, 0x0A, | |
796 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
797 | }; | |
798 | unsigned char *ptr = us->iobuf; | |
799 | unsigned long capacity; | |
800 | unsigned int lba; | |
801 | unsigned int pba; | |
802 | unsigned int page; | |
803 | unsigned short pages; | |
804 | struct sddr55_card_info *info; | |
805 | ||
806 | if (!us->extra) { | |
887c2560 | 807 | us->extra = kzalloc( |
1da177e4 LT |
808 | sizeof(struct sddr55_card_info), GFP_NOIO); |
809 | if (!us->extra) | |
810 | return USB_STOR_TRANSPORT_ERROR; | |
1da177e4 LT |
811 | us->extra_destructor = sddr55_card_info_destructor; |
812 | } | |
813 | ||
814 | info = (struct sddr55_card_info *)(us->extra); | |
815 | ||
816 | if (srb->cmnd[0] == REQUEST_SENSE) { | |
191648d0 JP |
817 | usb_stor_dbg(us, "request sense %02x/%02x/%02x\n", |
818 | info->sense_data[2], | |
819 | info->sense_data[12], | |
820 | info->sense_data[13]); | |
1da177e4 LT |
821 | |
822 | memcpy (ptr, info->sense_data, sizeof info->sense_data); | |
823 | ptr[0] = 0x70; | |
824 | ptr[7] = 11; | |
825 | usb_stor_set_xfer_buf (ptr, sizeof info->sense_data, srb); | |
826 | memset (info->sense_data, 0, sizeof info->sense_data); | |
827 | ||
828 | return USB_STOR_TRANSPORT_GOOD; | |
829 | } | |
830 | ||
831 | memset (info->sense_data, 0, sizeof info->sense_data); | |
832 | ||
f0183a33 FB |
833 | /* |
834 | * Dummy up a response for INQUIRY since SDDR55 doesn't | |
835 | * respond to INQUIRY commands | |
836 | */ | |
1da177e4 LT |
837 | |
838 | if (srb->cmnd[0] == INQUIRY) { | |
839 | memcpy(ptr, inquiry_response, 8); | |
840 | fill_inquiry_response(us, ptr, 36); | |
841 | return USB_STOR_TRANSPORT_GOOD; | |
842 | } | |
843 | ||
f0183a33 FB |
844 | /* |
845 | * only check card status if the map isn't allocated, ie no card seen yet | |
1da177e4 LT |
846 | * or if it's been over half a second since we last accessed it |
847 | */ | |
848 | if (info->lba_to_pba == NULL || time_after(jiffies, info->last_access + HZ/2)) { | |
849 | ||
850 | /* check to see if a card is fitted */ | |
851 | result = sddr55_status (us); | |
852 | if (result) { | |
853 | result = sddr55_status (us); | |
854 | if (!result) { | |
855 | set_sense_info (6, 0x28, 0); /* new media, set unit attention, not ready to ready */ | |
856 | } | |
857 | return USB_STOR_TRANSPORT_FAILED; | |
858 | } | |
859 | } | |
860 | ||
f0183a33 FB |
861 | /* |
862 | * if we detected a problem with the map when writing, | |
863 | * don't allow any more access | |
864 | */ | |
1da177e4 LT |
865 | if (info->fatal_error) { |
866 | ||
867 | set_sense_info (3, 0x31, 0); | |
868 | return USB_STOR_TRANSPORT_FAILED; | |
869 | } | |
870 | ||
871 | if (srb->cmnd[0] == READ_CAPACITY) { | |
872 | ||
873 | capacity = sddr55_get_capacity(us); | |
874 | ||
875 | if (!capacity) { | |
876 | set_sense_info (3, 0x30, 0); /* incompatible medium */ | |
877 | return USB_STOR_TRANSPORT_FAILED; | |
878 | } | |
879 | ||
880 | info->capacity = capacity; | |
881 | ||
f0183a33 FB |
882 | /* |
883 | * figure out the maximum logical block number, allowing for | |
884 | * the fact that only 250 out of every 256 are used | |
885 | */ | |
1da177e4 LT |
886 | info->max_log_blks = ((info->capacity >> (info->pageshift + info->blockshift)) / 256) * 250; |
887 | ||
f0183a33 FB |
888 | /* |
889 | * Last page in the card, adjust as we only use 250 out of | |
890 | * every 256 pages | |
891 | */ | |
1da177e4 LT |
892 | capacity = (capacity / 256) * 250; |
893 | ||
894 | capacity /= PAGESIZE; | |
895 | capacity--; | |
896 | ||
897 | ((__be32 *) ptr)[0] = cpu_to_be32(capacity); | |
898 | ((__be32 *) ptr)[1] = cpu_to_be32(PAGESIZE); | |
899 | usb_stor_set_xfer_buf(ptr, 8, srb); | |
900 | ||
901 | sddr55_read_map(us); | |
902 | ||
903 | return USB_STOR_TRANSPORT_GOOD; | |
904 | } | |
905 | ||
906 | if (srb->cmnd[0] == MODE_SENSE_10) { | |
907 | ||
908 | memcpy(ptr, mode_page_01, sizeof mode_page_01); | |
909 | ptr[3] = (info->read_only || info->force_read_only) ? 0x80 : 0; | |
910 | usb_stor_set_xfer_buf(ptr, sizeof(mode_page_01), srb); | |
911 | ||
912 | if ( (srb->cmnd[2] & 0x3F) == 0x01 ) { | |
191648d0 | 913 | usb_stor_dbg(us, "Dummy up request for mode page 1\n"); |
1da177e4 LT |
914 | return USB_STOR_TRANSPORT_GOOD; |
915 | ||
916 | } else if ( (srb->cmnd[2] & 0x3F) == 0x3F ) { | |
191648d0 | 917 | usb_stor_dbg(us, "Dummy up request for all mode pages\n"); |
1da177e4 LT |
918 | return USB_STOR_TRANSPORT_GOOD; |
919 | } | |
920 | ||
921 | set_sense_info (5, 0x24, 0); /* invalid field in command */ | |
922 | return USB_STOR_TRANSPORT_FAILED; | |
923 | } | |
924 | ||
925 | if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) { | |
926 | ||
191648d0 JP |
927 | usb_stor_dbg(us, "%s medium removal. Not that I can do anything about it...\n", |
928 | (srb->cmnd[4]&0x03) ? "Prevent" : "Allow"); | |
1da177e4 LT |
929 | |
930 | return USB_STOR_TRANSPORT_GOOD; | |
931 | ||
932 | } | |
933 | ||
934 | if (srb->cmnd[0] == READ_10 || srb->cmnd[0] == WRITE_10) { | |
935 | ||
936 | page = short_pack(srb->cmnd[3], srb->cmnd[2]); | |
937 | page <<= 16; | |
938 | page |= short_pack(srb->cmnd[5], srb->cmnd[4]); | |
939 | pages = short_pack(srb->cmnd[8], srb->cmnd[7]); | |
940 | ||
941 | page <<= info->smallpageshift; | |
942 | ||
943 | // convert page to block and page-within-block | |
944 | ||
945 | lba = page >> info->blockshift; | |
946 | page = page & info->blockmask; | |
947 | ||
948 | // locate physical block corresponding to logical block | |
949 | ||
950 | if (lba >= info->max_log_blks) { | |
951 | ||
191648d0 JP |
952 | usb_stor_dbg(us, "Error: Requested LBA %04X exceeds maximum block %04X\n", |
953 | lba, info->max_log_blks - 1); | |
1da177e4 LT |
954 | |
955 | set_sense_info (5, 0x24, 0); /* invalid field in command */ | |
956 | ||
957 | return USB_STOR_TRANSPORT_FAILED; | |
958 | } | |
959 | ||
960 | pba = info->lba_to_pba[lba]; | |
961 | ||
962 | if (srb->cmnd[0] == WRITE_10) { | |
191648d0 JP |
963 | usb_stor_dbg(us, "WRITE_10: write block %04X (LBA %04X) page %01X pages %d\n", |
964 | pba, lba, page, pages); | |
1da177e4 LT |
965 | |
966 | return sddr55_write_data(us, lba, page, pages); | |
967 | } else { | |
191648d0 JP |
968 | usb_stor_dbg(us, "READ_10: read block %04X (LBA %04X) page %01X pages %d\n", |
969 | pba, lba, page, pages); | |
1da177e4 LT |
970 | |
971 | return sddr55_read_data(us, lba, page, pages); | |
972 | } | |
973 | } | |
974 | ||
975 | ||
976 | if (srb->cmnd[0] == TEST_UNIT_READY) { | |
977 | return USB_STOR_TRANSPORT_GOOD; | |
978 | } | |
979 | ||
980 | if (srb->cmnd[0] == START_STOP) { | |
981 | return USB_STOR_TRANSPORT_GOOD; | |
982 | } | |
983 | ||
984 | set_sense_info (5, 0x20, 0); /* illegal command */ | |
985 | ||
986 | return USB_STOR_TRANSPORT_FAILED; // FIXME: sense buffer? | |
987 | } | |
988 | ||
aa519be3 | 989 | static struct scsi_host_template sddr55_host_template; |
70fcc005 AS |
990 | |
991 | static int sddr55_probe(struct usb_interface *intf, | |
992 | const struct usb_device_id *id) | |
993 | { | |
994 | struct us_data *us; | |
995 | int result; | |
996 | ||
997 | result = usb_stor_probe1(&us, intf, id, | |
aa519be3 AM |
998 | (id - sddr55_usb_ids) + sddr55_unusual_dev_list, |
999 | &sddr55_host_template); | |
70fcc005 AS |
1000 | if (result) |
1001 | return result; | |
1002 | ||
1003 | us->transport_name = "SDDR55"; | |
1004 | us->transport = sddr55_transport; | |
1005 | us->transport_reset = sddr55_reset; | |
1006 | us->max_lun = 0; | |
1007 | ||
1008 | result = usb_stor_probe2(us); | |
1009 | return result; | |
1010 | } | |
1011 | ||
1012 | static struct usb_driver sddr55_driver = { | |
aa519be3 | 1013 | .name = DRV_NAME, |
70fcc005 AS |
1014 | .probe = sddr55_probe, |
1015 | .disconnect = usb_stor_disconnect, | |
1016 | .suspend = usb_stor_suspend, | |
1017 | .resume = usb_stor_resume, | |
1018 | .reset_resume = usb_stor_reset_resume, | |
1019 | .pre_reset = usb_stor_pre_reset, | |
1020 | .post_reset = usb_stor_post_reset, | |
1021 | .id_table = sddr55_usb_ids, | |
1022 | .soft_unbind = 1, | |
e73b2db6 | 1023 | .no_dynamic_id = 1, |
70fcc005 AS |
1024 | }; |
1025 | ||
aa519be3 | 1026 | module_usb_stor_driver(sddr55_driver, sddr55_host_template, DRV_NAME); |