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5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0+ |
f0183a33 FB |
2 | /* |
3 | * Driver for SanDisk SDDR-55 SmartMedia reader | |
1da177e4 LT |
4 | * |
5 | * SDDR55 driver v0.1: | |
6 | * | |
7 | * First release | |
8 | * | |
9 | * Current development and maintenance by: | |
10 | * (c) 2002 Simon Munton | |
1da177e4 LT |
11 | */ |
12 | ||
13 | #include <linux/jiffies.h> | |
14 | #include <linux/errno.h> | |
70fcc005 | 15 | #include <linux/module.h> |
1da177e4 LT |
16 | #include <linux/slab.h> |
17 | ||
18 | #include <scsi/scsi.h> | |
19 | #include <scsi/scsi_cmnd.h> | |
20 | ||
21 | #include "usb.h" | |
22 | #include "transport.h" | |
23 | #include "protocol.h" | |
24 | #include "debug.h" | |
aa519be3 AM |
25 | #include "scsiglue.h" |
26 | ||
27 | #define DRV_NAME "ums-sddr55" | |
70fcc005 | 28 | |
4246b06a MG |
29 | MODULE_DESCRIPTION("Driver for SanDisk SDDR-55 SmartMedia reader"); |
30 | MODULE_AUTHOR("Simon Munton"); | |
31 | MODULE_LICENSE("GPL"); | |
70fcc005 AS |
32 | |
33 | /* | |
34 | * The table of devices | |
35 | */ | |
36 | #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ | |
37 | vendorName, productName, useProtocol, useTransport, \ | |
38 | initFunction, flags) \ | |
39 | { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ | |
f61870ee | 40 | .driver_info = (flags) } |
70fcc005 | 41 | |
566b8bbf | 42 | static struct usb_device_id sddr55_usb_ids[] = { |
70fcc005 AS |
43 | # include "unusual_sddr55.h" |
44 | { } /* Terminating entry */ | |
45 | }; | |
46 | MODULE_DEVICE_TABLE(usb, sddr55_usb_ids); | |
47 | ||
48 | #undef UNUSUAL_DEV | |
49 | ||
50 | /* | |
51 | * The flags table | |
52 | */ | |
53 | #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ | |
54 | vendor_name, product_name, use_protocol, use_transport, \ | |
55 | init_function, Flags) \ | |
56 | { \ | |
57 | .vendorName = vendor_name, \ | |
58 | .productName = product_name, \ | |
59 | .useProtocol = use_protocol, \ | |
60 | .useTransport = use_transport, \ | |
61 | .initFunction = init_function, \ | |
62 | } | |
63 | ||
64 | static struct us_unusual_dev sddr55_unusual_dev_list[] = { | |
65 | # include "unusual_sddr55.h" | |
66 | { } /* Terminating entry */ | |
67 | }; | |
68 | ||
69 | #undef UNUSUAL_DEV | |
1da177e4 LT |
70 | |
71 | ||
72 | #define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) ) | |
73 | #define LSB_of(s) ((s)&0xFF) | |
74 | #define MSB_of(s) ((s)>>8) | |
75 | #define PAGESIZE 512 | |
76 | ||
77 | #define set_sense_info(sk, asc, ascq) \ | |
78 | do { \ | |
79 | info->sense_data[2] = sk; \ | |
80 | info->sense_data[12] = asc; \ | |
81 | info->sense_data[13] = ascq; \ | |
82 | } while (0) | |
83 | ||
84 | ||
85 | struct sddr55_card_info { | |
86 | unsigned long capacity; /* Size of card in bytes */ | |
87 | int max_log_blks; /* maximum number of logical blocks */ | |
88 | int pageshift; /* log2 of pagesize */ | |
89 | int smallpageshift; /* 1 if pagesize == 256 */ | |
90 | int blocksize; /* Size of block in pages */ | |
91 | int blockshift; /* log2 of blocksize */ | |
92 | int blockmask; /* 2^blockshift - 1 */ | |
93 | int read_only; /* non zero if card is write protected */ | |
94 | int force_read_only; /* non zero if we find a map error*/ | |
95 | int *lba_to_pba; /* logical to physical map */ | |
96 | int *pba_to_lba; /* physical to logical map */ | |
97 | int fatal_error; /* set if we detect something nasty */ | |
98 | unsigned long last_access; /* number of jiffies since we last talked to device */ | |
99 | unsigned char sense_data[18]; | |
100 | }; | |
101 | ||
102 | ||
103 | #define NOT_ALLOCATED 0xffffffff | |
104 | #define BAD_BLOCK 0xffff | |
105 | #define CIS_BLOCK 0x400 | |
106 | #define UNUSED_BLOCK 0x3ff | |
107 | ||
108 | static int | |
109 | sddr55_bulk_transport(struct us_data *us, int direction, | |
110 | unsigned char *data, unsigned int len) { | |
111 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
112 | unsigned int pipe = (direction == DMA_FROM_DEVICE) ? | |
113 | us->recv_bulk_pipe : us->send_bulk_pipe; | |
114 | ||
115 | if (!len) | |
116 | return USB_STOR_XFER_GOOD; | |
117 | info->last_access = jiffies; | |
118 | return usb_stor_bulk_transfer_buf(us, pipe, data, len, NULL); | |
119 | } | |
120 | ||
f0183a33 FB |
121 | /* |
122 | * check if card inserted, if there is, update read_only status | |
1da177e4 LT |
123 | * return non zero if no card |
124 | */ | |
125 | ||
126 | static int sddr55_status(struct us_data *us) | |
127 | { | |
128 | int result; | |
129 | unsigned char *command = us->iobuf; | |
130 | unsigned char *status = us->iobuf; | |
131 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
132 | ||
133 | /* send command */ | |
134 | memset(command, 0, 8); | |
135 | command[5] = 0xB0; | |
136 | command[7] = 0x80; | |
137 | result = sddr55_bulk_transport(us, | |
138 | DMA_TO_DEVICE, command, 8); | |
139 | ||
191648d0 | 140 | usb_stor_dbg(us, "Result for send_command in status %d\n", result); |
1da177e4 LT |
141 | |
142 | if (result != USB_STOR_XFER_GOOD) { | |
143 | set_sense_info (4, 0, 0); /* hardware error */ | |
144 | return USB_STOR_TRANSPORT_ERROR; | |
145 | } | |
146 | ||
147 | result = sddr55_bulk_transport(us, | |
148 | DMA_FROM_DEVICE, status, 4); | |
149 | ||
150 | /* expect to get short transfer if no card fitted */ | |
151 | if (result == USB_STOR_XFER_SHORT || result == USB_STOR_XFER_STALLED) { | |
152 | /* had a short transfer, no card inserted, free map memory */ | |
1bc3c9e1 JJ |
153 | kfree(info->lba_to_pba); |
154 | kfree(info->pba_to_lba); | |
1da177e4 LT |
155 | info->lba_to_pba = NULL; |
156 | info->pba_to_lba = NULL; | |
157 | ||
158 | info->fatal_error = 0; | |
159 | info->force_read_only = 0; | |
160 | ||
161 | set_sense_info (2, 0x3a, 0); /* not ready, medium not present */ | |
162 | return USB_STOR_TRANSPORT_FAILED; | |
163 | } | |
164 | ||
165 | if (result != USB_STOR_XFER_GOOD) { | |
166 | set_sense_info (4, 0, 0); /* hardware error */ | |
167 | return USB_STOR_TRANSPORT_FAILED; | |
168 | } | |
169 | ||
170 | /* check write protect status */ | |
171 | info->read_only = (status[0] & 0x20); | |
172 | ||
173 | /* now read status */ | |
174 | result = sddr55_bulk_transport(us, | |
175 | DMA_FROM_DEVICE, status, 2); | |
176 | ||
177 | if (result != USB_STOR_XFER_GOOD) { | |
178 | set_sense_info (4, 0, 0); /* hardware error */ | |
179 | } | |
180 | ||
181 | return (result == USB_STOR_XFER_GOOD ? | |
182 | USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_FAILED); | |
183 | } | |
184 | ||
185 | ||
186 | static int sddr55_read_data(struct us_data *us, | |
187 | unsigned int lba, | |
188 | unsigned int page, | |
189 | unsigned short sectors) { | |
190 | ||
191 | int result = USB_STOR_TRANSPORT_GOOD; | |
192 | unsigned char *command = us->iobuf; | |
193 | unsigned char *status = us->iobuf; | |
194 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
195 | unsigned char *buffer; | |
196 | ||
197 | unsigned int pba; | |
198 | unsigned long address; | |
199 | ||
200 | unsigned short pages; | |
1f6f31a0 JA |
201 | unsigned int len, offset; |
202 | struct scatterlist *sg; | |
1da177e4 LT |
203 | |
204 | // Since we only read in one block at a time, we have to create | |
205 | // a bounce buffer and move the data a piece at a time between the | |
206 | // bounce buffer and the actual transfer buffer. | |
207 | ||
208 | len = min((unsigned int) sectors, (unsigned int) info->blocksize >> | |
209 | info->smallpageshift) * PAGESIZE; | |
210 | buffer = kmalloc(len, GFP_NOIO); | |
211 | if (buffer == NULL) | |
212 | return USB_STOR_TRANSPORT_ERROR; /* out of memory */ | |
1f6f31a0 JA |
213 | offset = 0; |
214 | sg = NULL; | |
1da177e4 LT |
215 | |
216 | while (sectors>0) { | |
217 | ||
218 | /* have we got to end? */ | |
219 | if (lba >= info->max_log_blks) | |
220 | break; | |
221 | ||
222 | pba = info->lba_to_pba[lba]; | |
223 | ||
224 | // Read as many sectors as possible in this block | |
225 | ||
226 | pages = min((unsigned int) sectors << info->smallpageshift, | |
227 | info->blocksize - page); | |
228 | len = pages << info->pageshift; | |
229 | ||
191648d0 JP |
230 | usb_stor_dbg(us, "Read %02X pages, from PBA %04X (LBA %04X) page %02X\n", |
231 | pages, pba, lba, page); | |
1da177e4 LT |
232 | |
233 | if (pba == NOT_ALLOCATED) { | |
234 | /* no pba for this lba, fill with zeroes */ | |
235 | memset (buffer, 0, len); | |
236 | } else { | |
237 | ||
238 | address = (pba << info->blockshift) + page; | |
239 | ||
240 | command[0] = 0; | |
241 | command[1] = LSB_of(address>>16); | |
242 | command[2] = LSB_of(address>>8); | |
243 | command[3] = LSB_of(address); | |
244 | ||
245 | command[4] = 0; | |
246 | command[5] = 0xB0; | |
247 | command[6] = LSB_of(pages << (1 - info->smallpageshift)); | |
248 | command[7] = 0x85; | |
249 | ||
250 | /* send command */ | |
251 | result = sddr55_bulk_transport(us, | |
252 | DMA_TO_DEVICE, command, 8); | |
253 | ||
191648d0 JP |
254 | usb_stor_dbg(us, "Result for send_command in read_data %d\n", |
255 | result); | |
1da177e4 LT |
256 | |
257 | if (result != USB_STOR_XFER_GOOD) { | |
258 | result = USB_STOR_TRANSPORT_ERROR; | |
259 | goto leave; | |
260 | } | |
261 | ||
262 | /* read data */ | |
263 | result = sddr55_bulk_transport(us, | |
264 | DMA_FROM_DEVICE, buffer, len); | |
265 | ||
266 | if (result != USB_STOR_XFER_GOOD) { | |
267 | result = USB_STOR_TRANSPORT_ERROR; | |
268 | goto leave; | |
269 | } | |
270 | ||
271 | /* now read status */ | |
272 | result = sddr55_bulk_transport(us, | |
273 | DMA_FROM_DEVICE, status, 2); | |
274 | ||
275 | if (result != USB_STOR_XFER_GOOD) { | |
276 | result = USB_STOR_TRANSPORT_ERROR; | |
277 | goto leave; | |
278 | } | |
279 | ||
280 | /* check status for error */ | |
281 | if (status[0] == 0xff && status[1] == 0x4) { | |
282 | set_sense_info (3, 0x11, 0); | |
283 | result = USB_STOR_TRANSPORT_FAILED; | |
284 | goto leave; | |
285 | } | |
286 | } | |
287 | ||
288 | // Store the data in the transfer buffer | |
289 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
1f6f31a0 | 290 | &sg, &offset, TO_XFER_BUF); |
1da177e4 LT |
291 | |
292 | page = 0; | |
293 | lba++; | |
294 | sectors -= pages >> info->smallpageshift; | |
295 | } | |
296 | ||
297 | result = USB_STOR_TRANSPORT_GOOD; | |
298 | ||
299 | leave: | |
300 | kfree(buffer); | |
301 | ||
302 | return result; | |
303 | } | |
304 | ||
305 | static int sddr55_write_data(struct us_data *us, | |
306 | unsigned int lba, | |
307 | unsigned int page, | |
308 | unsigned short sectors) { | |
309 | ||
310 | int result = USB_STOR_TRANSPORT_GOOD; | |
311 | unsigned char *command = us->iobuf; | |
312 | unsigned char *status = us->iobuf; | |
313 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
314 | unsigned char *buffer; | |
315 | ||
316 | unsigned int pba; | |
317 | unsigned int new_pba; | |
318 | unsigned long address; | |
319 | ||
320 | unsigned short pages; | |
321 | int i; | |
1f6f31a0 JA |
322 | unsigned int len, offset; |
323 | struct scatterlist *sg; | |
1da177e4 LT |
324 | |
325 | /* check if we are allowed to write */ | |
326 | if (info->read_only || info->force_read_only) { | |
327 | set_sense_info (7, 0x27, 0); /* read only */ | |
328 | return USB_STOR_TRANSPORT_FAILED; | |
329 | } | |
330 | ||
331 | // Since we only write one block at a time, we have to create | |
332 | // a bounce buffer and move the data a piece at a time between the | |
333 | // bounce buffer and the actual transfer buffer. | |
334 | ||
335 | len = min((unsigned int) sectors, (unsigned int) info->blocksize >> | |
336 | info->smallpageshift) * PAGESIZE; | |
337 | buffer = kmalloc(len, GFP_NOIO); | |
338 | if (buffer == NULL) | |
339 | return USB_STOR_TRANSPORT_ERROR; | |
1f6f31a0 JA |
340 | offset = 0; |
341 | sg = NULL; | |
1da177e4 LT |
342 | |
343 | while (sectors > 0) { | |
344 | ||
345 | /* have we got to end? */ | |
346 | if (lba >= info->max_log_blks) | |
347 | break; | |
348 | ||
349 | pba = info->lba_to_pba[lba]; | |
350 | ||
351 | // Write as many sectors as possible in this block | |
352 | ||
353 | pages = min((unsigned int) sectors << info->smallpageshift, | |
354 | info->blocksize - page); | |
355 | len = pages << info->pageshift; | |
356 | ||
357 | // Get the data from the transfer buffer | |
358 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
1f6f31a0 | 359 | &sg, &offset, FROM_XFER_BUF); |
1da177e4 | 360 | |
191648d0 JP |
361 | usb_stor_dbg(us, "Write %02X pages, to PBA %04X (LBA %04X) page %02X\n", |
362 | pages, pba, lba, page); | |
1da177e4 LT |
363 | |
364 | command[4] = 0; | |
365 | ||
366 | if (pba == NOT_ALLOCATED) { | |
367 | /* no pba allocated for this lba, find a free pba to use */ | |
368 | ||
369 | int max_pba = (info->max_log_blks / 250 ) * 256; | |
370 | int found_count = 0; | |
371 | int found_pba = -1; | |
372 | ||
373 | /* set pba to first block in zone lba is in */ | |
374 | pba = (lba / 1000) * 1024; | |
375 | ||
191648d0 | 376 | usb_stor_dbg(us, "No PBA for LBA %04X\n", lba); |
1da177e4 LT |
377 | |
378 | if (max_pba > 1024) | |
379 | max_pba = 1024; | |
380 | ||
381 | /* | |
382 | * Scan through the map looking for an unused block | |
383 | * leave 16 unused blocks at start (or as many as | |
384 | * possible) since the sddr55 seems to reuse a used | |
385 | * block when it shouldn't if we don't leave space. | |
386 | */ | |
387 | for (i = 0; i < max_pba; i++, pba++) { | |
388 | if (info->pba_to_lba[pba] == UNUSED_BLOCK) { | |
389 | found_pba = pba; | |
390 | if (found_count++ > 16) | |
391 | break; | |
392 | } | |
393 | } | |
394 | ||
395 | pba = found_pba; | |
396 | ||
397 | if (pba == -1) { | |
398 | /* oh dear */ | |
191648d0 | 399 | usb_stor_dbg(us, "Couldn't find unallocated block\n"); |
1da177e4 LT |
400 | |
401 | set_sense_info (3, 0x31, 0); /* medium error */ | |
402 | result = USB_STOR_TRANSPORT_FAILED; | |
403 | goto leave; | |
404 | } | |
405 | ||
191648d0 JP |
406 | usb_stor_dbg(us, "Allocating PBA %04X for LBA %04X\n", |
407 | pba, lba); | |
1da177e4 LT |
408 | |
409 | /* set writing to unallocated block flag */ | |
410 | command[4] = 0x40; | |
411 | } | |
412 | ||
413 | address = (pba << info->blockshift) + page; | |
414 | ||
415 | command[1] = LSB_of(address>>16); | |
416 | command[2] = LSB_of(address>>8); | |
417 | command[3] = LSB_of(address); | |
418 | ||
419 | /* set the lba into the command, modulo 1000 */ | |
420 | command[0] = LSB_of(lba % 1000); | |
421 | command[6] = MSB_of(lba % 1000); | |
422 | ||
423 | command[4] |= LSB_of(pages >> info->smallpageshift); | |
424 | command[5] = 0xB0; | |
425 | command[7] = 0x86; | |
426 | ||
427 | /* send command */ | |
428 | result = sddr55_bulk_transport(us, | |
429 | DMA_TO_DEVICE, command, 8); | |
430 | ||
431 | if (result != USB_STOR_XFER_GOOD) { | |
191648d0 JP |
432 | usb_stor_dbg(us, "Result for send_command in write_data %d\n", |
433 | result); | |
1da177e4 LT |
434 | |
435 | /* set_sense_info is superfluous here? */ | |
436 | set_sense_info (3, 0x3, 0);/* peripheral write error */ | |
437 | result = USB_STOR_TRANSPORT_FAILED; | |
438 | goto leave; | |
439 | } | |
440 | ||
441 | /* send the data */ | |
442 | result = sddr55_bulk_transport(us, | |
443 | DMA_TO_DEVICE, buffer, len); | |
444 | ||
445 | if (result != USB_STOR_XFER_GOOD) { | |
191648d0 JP |
446 | usb_stor_dbg(us, "Result for send_data in write_data %d\n", |
447 | result); | |
1da177e4 LT |
448 | |
449 | /* set_sense_info is superfluous here? */ | |
450 | set_sense_info (3, 0x3, 0);/* peripheral write error */ | |
451 | result = USB_STOR_TRANSPORT_FAILED; | |
452 | goto leave; | |
453 | } | |
454 | ||
455 | /* now read status */ | |
456 | result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, status, 6); | |
457 | ||
458 | if (result != USB_STOR_XFER_GOOD) { | |
191648d0 JP |
459 | usb_stor_dbg(us, "Result for get_status 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 | new_pba = (status[3] + (status[4] << 8) + (status[5] << 16)) | |
469 | >> info->blockshift; | |
470 | ||
471 | /* check status for error */ | |
472 | if (status[0] == 0xff && status[1] == 0x4) { | |
473 | info->pba_to_lba[new_pba] = BAD_BLOCK; | |
474 | ||
475 | set_sense_info (3, 0x0c, 0); | |
476 | result = USB_STOR_TRANSPORT_FAILED; | |
477 | goto leave; | |
478 | } | |
479 | ||
191648d0 JP |
480 | usb_stor_dbg(us, "Updating maps for LBA %04X: old PBA %04X, new PBA %04X\n", |
481 | lba, pba, new_pba); | |
1da177e4 LT |
482 | |
483 | /* update the lba<->pba maps, note new_pba might be the same as pba */ | |
484 | info->lba_to_pba[lba] = new_pba; | |
485 | info->pba_to_lba[pba] = UNUSED_BLOCK; | |
486 | ||
487 | /* check that new_pba wasn't already being used */ | |
488 | if (info->pba_to_lba[new_pba] != UNUSED_BLOCK) { | |
489 | printk(KERN_ERR "sddr55 error: new PBA %04X already in use for LBA %04X\n", | |
490 | new_pba, info->pba_to_lba[new_pba]); | |
491 | info->fatal_error = 1; | |
492 | set_sense_info (3, 0x31, 0); | |
493 | result = USB_STOR_TRANSPORT_FAILED; | |
494 | goto leave; | |
495 | } | |
496 | ||
497 | /* update the pba<->lba maps for new_pba */ | |
498 | info->pba_to_lba[new_pba] = lba % 1000; | |
499 | ||
500 | page = 0; | |
501 | lba++; | |
502 | sectors -= pages >> info->smallpageshift; | |
503 | } | |
504 | result = USB_STOR_TRANSPORT_GOOD; | |
505 | ||
506 | leave: | |
507 | kfree(buffer); | |
508 | return result; | |
509 | } | |
510 | ||
511 | static int sddr55_read_deviceID(struct us_data *us, | |
512 | unsigned char *manufacturerID, | |
513 | unsigned char *deviceID) { | |
514 | ||
515 | int result; | |
516 | unsigned char *command = us->iobuf; | |
517 | unsigned char *content = us->iobuf; | |
518 | ||
519 | memset(command, 0, 8); | |
520 | command[5] = 0xB0; | |
521 | command[7] = 0x84; | |
522 | result = sddr55_bulk_transport(us, DMA_TO_DEVICE, command, 8); | |
523 | ||
191648d0 JP |
524 | usb_stor_dbg(us, "Result of send_control for device ID is %d\n", |
525 | result); | |
1da177e4 LT |
526 | |
527 | if (result != USB_STOR_XFER_GOOD) | |
528 | return USB_STOR_TRANSPORT_ERROR; | |
529 | ||
530 | result = sddr55_bulk_transport(us, | |
531 | DMA_FROM_DEVICE, content, 4); | |
532 | ||
533 | if (result != USB_STOR_XFER_GOOD) | |
534 | return USB_STOR_TRANSPORT_ERROR; | |
535 | ||
536 | *manufacturerID = content[0]; | |
537 | *deviceID = content[1]; | |
538 | ||
539 | if (content[0] != 0xff) { | |
540 | result = sddr55_bulk_transport(us, | |
541 | DMA_FROM_DEVICE, content, 2); | |
542 | } | |
543 | ||
544 | return USB_STOR_TRANSPORT_GOOD; | |
545 | } | |
546 | ||
547 | ||
70fcc005 AS |
548 | static int sddr55_reset(struct us_data *us) |
549 | { | |
1da177e4 LT |
550 | return 0; |
551 | } | |
552 | ||
553 | ||
554 | static unsigned long sddr55_get_capacity(struct us_data *us) { | |
555 | ||
8a20acc5 AM |
556 | unsigned char uninitialized_var(manufacturerID); |
557 | unsigned char uninitialized_var(deviceID); | |
1da177e4 LT |
558 | int result; |
559 | struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra; | |
560 | ||
191648d0 | 561 | usb_stor_dbg(us, "Reading capacity...\n"); |
1da177e4 LT |
562 | |
563 | result = sddr55_read_deviceID(us, | |
564 | &manufacturerID, | |
565 | &deviceID); | |
566 | ||
191648d0 | 567 | usb_stor_dbg(us, "Result of read_deviceID is %d\n", result); |
1da177e4 LT |
568 | |
569 | if (result != USB_STOR_XFER_GOOD) | |
570 | return 0; | |
571 | ||
191648d0 JP |
572 | usb_stor_dbg(us, "Device ID = %02X\n", deviceID); |
573 | usb_stor_dbg(us, "Manuf ID = %02X\n", manufacturerID); | |
1da177e4 LT |
574 | |
575 | info->pageshift = 9; | |
576 | info->smallpageshift = 0; | |
577 | info->blocksize = 16; | |
578 | info->blockshift = 4; | |
579 | info->blockmask = 15; | |
580 | ||
581 | switch (deviceID) { | |
582 | ||
583 | case 0x6e: // 1MB | |
584 | case 0xe8: | |
585 | case 0xec: | |
586 | info->pageshift = 8; | |
587 | info->smallpageshift = 1; | |
588 | return 0x00100000; | |
589 | ||
590 | case 0xea: // 2MB | |
591 | case 0x64: | |
592 | info->pageshift = 8; | |
593 | info->smallpageshift = 1; | |
c2300cd6 | 594 | /* fall through */ |
1da177e4 LT |
595 | case 0x5d: // 5d is a ROM card with pagesize 512. |
596 | return 0x00200000; | |
597 | ||
598 | case 0xe3: // 4MB | |
599 | case 0xe5: | |
600 | case 0x6b: | |
601 | case 0xd5: | |
602 | return 0x00400000; | |
603 | ||
604 | case 0xe6: // 8MB | |
605 | case 0xd6: | |
606 | return 0x00800000; | |
607 | ||
608 | case 0x73: // 16MB | |
609 | info->blocksize = 32; | |
610 | info->blockshift = 5; | |
611 | info->blockmask = 31; | |
612 | return 0x01000000; | |
613 | ||
614 | case 0x75: // 32MB | |
615 | info->blocksize = 32; | |
616 | info->blockshift = 5; | |
617 | info->blockmask = 31; | |
618 | return 0x02000000; | |
619 | ||
620 | case 0x76: // 64MB | |
621 | info->blocksize = 32; | |
622 | info->blockshift = 5; | |
623 | info->blockmask = 31; | |
624 | return 0x04000000; | |
625 | ||
626 | case 0x79: // 128MB | |
627 | info->blocksize = 32; | |
628 | info->blockshift = 5; | |
629 | info->blockmask = 31; | |
630 | return 0x08000000; | |
631 | ||
632 | default: // unknown | |
633 | return 0; | |
634 | ||
635 | } | |
636 | } | |
637 | ||
638 | static int sddr55_read_map(struct us_data *us) { | |
639 | ||
640 | struct sddr55_card_info *info = (struct sddr55_card_info *)(us->extra); | |
641 | int numblocks; | |
642 | unsigned char *buffer; | |
643 | unsigned char *command = us->iobuf; | |
644 | int i; | |
645 | unsigned short lba; | |
646 | unsigned short max_lba; | |
647 | int result; | |
648 | ||
649 | if (!info->capacity) | |
650 | return -1; | |
651 | ||
652 | numblocks = info->capacity >> (info->blockshift + info->pageshift); | |
653 | ||
6da2ec56 | 654 | buffer = kmalloc_array(numblocks, 2, GFP_NOIO ); |
1da177e4 LT |
655 | |
656 | if (!buffer) | |
657 | return -1; | |
658 | ||
659 | memset(command, 0, 8); | |
660 | command[5] = 0xB0; | |
661 | command[6] = numblocks * 2 / 256; | |
662 | command[7] = 0x8A; | |
663 | ||
664 | result = sddr55_bulk_transport(us, DMA_TO_DEVICE, command, 8); | |
665 | ||
666 | if ( result != USB_STOR_XFER_GOOD) { | |
667 | kfree (buffer); | |
668 | return -1; | |
669 | } | |
670 | ||
671 | result = sddr55_bulk_transport(us, DMA_FROM_DEVICE, buffer, numblocks * 2); | |
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, command, 2); | |
679 | ||
680 | if ( result != USB_STOR_XFER_GOOD) { | |
681 | kfree (buffer); | |
682 | return -1; | |
683 | } | |
684 | ||
1bc3c9e1 JJ |
685 | kfree(info->lba_to_pba); |
686 | kfree(info->pba_to_lba); | |
6da2ec56 KC |
687 | info->lba_to_pba = kmalloc_array(numblocks, sizeof(int), GFP_NOIO); |
688 | info->pba_to_lba = kmalloc_array(numblocks, sizeof(int), GFP_NOIO); | |
1da177e4 LT |
689 | |
690 | if (info->lba_to_pba == NULL || info->pba_to_lba == NULL) { | |
1bc3c9e1 JJ |
691 | kfree(info->lba_to_pba); |
692 | kfree(info->pba_to_lba); | |
1da177e4 LT |
693 | info->lba_to_pba = NULL; |
694 | info->pba_to_lba = NULL; | |
695 | kfree(buffer); | |
696 | return -1; | |
697 | } | |
698 | ||
699 | memset(info->lba_to_pba, 0xff, numblocks*sizeof(int)); | |
700 | memset(info->pba_to_lba, 0xff, numblocks*sizeof(int)); | |
701 | ||
702 | /* set maximum lba */ | |
703 | max_lba = info->max_log_blks; | |
704 | if (max_lba > 1000) | |
705 | max_lba = 1000; | |
706 | ||
f0183a33 FB |
707 | /* |
708 | * Each block is 64 bytes of control data, so block i is located in | |
709 | * scatterlist block i*64/128k = i*(2^6)*(2^-17) = i*(2^-11) | |
710 | */ | |
1da177e4 LT |
711 | |
712 | for (i=0; i<numblocks; i++) { | |
713 | int zone = i / 1024; | |
714 | ||
715 | lba = short_pack(buffer[i * 2], buffer[i * 2 + 1]); | |
716 | ||
f0183a33 FB |
717 | /* |
718 | * Every 1024 physical blocks ("zone"), the LBA numbers | |
1da177e4 LT |
719 | * go back to zero, but are within a higher |
720 | * block of LBA's. Also, there is a maximum of | |
721 | * 1000 LBA's per zone. In other words, in PBA | |
722 | * 1024-2047 you will find LBA 0-999 which are | |
723 | * really LBA 1000-1999. Yes, this wastes 24 | |
724 | * physical blocks per zone. Go figure. | |
725 | * These devices can have blocks go bad, so there | |
726 | * are 24 spare blocks to use when blocks do go bad. | |
727 | */ | |
728 | ||
f0183a33 FB |
729 | /* |
730 | * SDDR55 returns 0xffff for a bad block, and 0x400 for the | |
1da177e4 LT |
731 | * CIS block. (Is this true for cards 8MB or less??) |
732 | * Record these in the physical to logical map | |
733 | */ | |
734 | ||
735 | info->pba_to_lba[i] = lba; | |
736 | ||
737 | if (lba >= max_lba) { | |
738 | continue; | |
739 | } | |
740 | ||
741 | if (info->lba_to_pba[lba + zone * 1000] != NOT_ALLOCATED && | |
742 | !info->force_read_only) { | |
6f8aa65b FS |
743 | printk(KERN_WARNING |
744 | "sddr55: map inconsistency at LBA %04X\n", | |
745 | lba + zone * 1000); | |
1da177e4 LT |
746 | info->force_read_only = 1; |
747 | } | |
748 | ||
749 | if (lba<0x10 || (lba>=0x3E0 && lba<0x3EF)) | |
191648d0 | 750 | usb_stor_dbg(us, "LBA %04X <-> PBA %04X\n", lba, i); |
1da177e4 LT |
751 | |
752 | info->lba_to_pba[lba + zone * 1000] = i; | |
753 | } | |
754 | ||
755 | kfree(buffer); | |
756 | return 0; | |
757 | } | |
758 | ||
759 | ||
760 | static void sddr55_card_info_destructor(void *extra) { | |
761 | struct sddr55_card_info *info = (struct sddr55_card_info *)extra; | |
762 | ||
763 | if (!extra) | |
764 | return; | |
765 | ||
1bc3c9e1 JJ |
766 | kfree(info->lba_to_pba); |
767 | kfree(info->pba_to_lba); | |
1da177e4 LT |
768 | } |
769 | ||
770 | ||
771 | /* | |
772 | * Transport for the Sandisk SDDR-55 | |
773 | */ | |
70fcc005 | 774 | static int sddr55_transport(struct scsi_cmnd *srb, struct us_data *us) |
1da177e4 LT |
775 | { |
776 | int result; | |
777 | static unsigned char inquiry_response[8] = { | |
778 | 0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00 | |
779 | }; | |
780 | // write-protected for now, no block descriptor support | |
781 | static unsigned char mode_page_01[20] = { | |
782 | 0x0, 0x12, 0x00, 0x80, 0x0, 0x0, 0x0, 0x0, | |
783 | 0x01, 0x0A, | |
784 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
785 | }; | |
786 | unsigned char *ptr = us->iobuf; | |
787 | unsigned long capacity; | |
788 | unsigned int lba; | |
789 | unsigned int pba; | |
790 | unsigned int page; | |
791 | unsigned short pages; | |
792 | struct sddr55_card_info *info; | |
793 | ||
794 | if (!us->extra) { | |
887c2560 | 795 | us->extra = kzalloc( |
1da177e4 LT |
796 | sizeof(struct sddr55_card_info), GFP_NOIO); |
797 | if (!us->extra) | |
798 | return USB_STOR_TRANSPORT_ERROR; | |
1da177e4 LT |
799 | us->extra_destructor = sddr55_card_info_destructor; |
800 | } | |
801 | ||
802 | info = (struct sddr55_card_info *)(us->extra); | |
803 | ||
804 | if (srb->cmnd[0] == REQUEST_SENSE) { | |
191648d0 JP |
805 | usb_stor_dbg(us, "request sense %02x/%02x/%02x\n", |
806 | info->sense_data[2], | |
807 | info->sense_data[12], | |
808 | info->sense_data[13]); | |
1da177e4 LT |
809 | |
810 | memcpy (ptr, info->sense_data, sizeof info->sense_data); | |
811 | ptr[0] = 0x70; | |
812 | ptr[7] = 11; | |
813 | usb_stor_set_xfer_buf (ptr, sizeof info->sense_data, srb); | |
814 | memset (info->sense_data, 0, sizeof info->sense_data); | |
815 | ||
816 | return USB_STOR_TRANSPORT_GOOD; | |
817 | } | |
818 | ||
819 | memset (info->sense_data, 0, sizeof info->sense_data); | |
820 | ||
f0183a33 FB |
821 | /* |
822 | * Dummy up a response for INQUIRY since SDDR55 doesn't | |
823 | * respond to INQUIRY commands | |
824 | */ | |
1da177e4 LT |
825 | |
826 | if (srb->cmnd[0] == INQUIRY) { | |
827 | memcpy(ptr, inquiry_response, 8); | |
828 | fill_inquiry_response(us, ptr, 36); | |
829 | return USB_STOR_TRANSPORT_GOOD; | |
830 | } | |
831 | ||
f0183a33 FB |
832 | /* |
833 | * only check card status if the map isn't allocated, ie no card seen yet | |
1da177e4 LT |
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 | ||
f0183a33 FB |
849 | /* |
850 | * if we detected a problem with the map when writing, | |
851 | * don't allow any more access | |
852 | */ | |
1da177e4 LT |
853 | if (info->fatal_error) { |
854 | ||
855 | set_sense_info (3, 0x31, 0); | |
856 | return USB_STOR_TRANSPORT_FAILED; | |
857 | } | |
858 | ||
859 | if (srb->cmnd[0] == READ_CAPACITY) { | |
860 | ||
861 | capacity = sddr55_get_capacity(us); | |
862 | ||
863 | if (!capacity) { | |
864 | set_sense_info (3, 0x30, 0); /* incompatible medium */ | |
865 | return USB_STOR_TRANSPORT_FAILED; | |
866 | } | |
867 | ||
868 | info->capacity = capacity; | |
869 | ||
f0183a33 FB |
870 | /* |
871 | * figure out the maximum logical block number, allowing for | |
872 | * the fact that only 250 out of every 256 are used | |
873 | */ | |
1da177e4 LT |
874 | info->max_log_blks = ((info->capacity >> (info->pageshift + info->blockshift)) / 256) * 250; |
875 | ||
f0183a33 FB |
876 | /* |
877 | * Last page in the card, adjust as we only use 250 out of | |
878 | * every 256 pages | |
879 | */ | |
1da177e4 LT |
880 | capacity = (capacity / 256) * 250; |
881 | ||
882 | capacity /= PAGESIZE; | |
883 | capacity--; | |
884 | ||
885 | ((__be32 *) ptr)[0] = cpu_to_be32(capacity); | |
886 | ((__be32 *) ptr)[1] = cpu_to_be32(PAGESIZE); | |
887 | usb_stor_set_xfer_buf(ptr, 8, srb); | |
888 | ||
889 | sddr55_read_map(us); | |
890 | ||
891 | return USB_STOR_TRANSPORT_GOOD; | |
892 | } | |
893 | ||
894 | if (srb->cmnd[0] == MODE_SENSE_10) { | |
895 | ||
896 | memcpy(ptr, mode_page_01, sizeof mode_page_01); | |
897 | ptr[3] = (info->read_only || info->force_read_only) ? 0x80 : 0; | |
898 | usb_stor_set_xfer_buf(ptr, sizeof(mode_page_01), srb); | |
899 | ||
900 | if ( (srb->cmnd[2] & 0x3F) == 0x01 ) { | |
191648d0 | 901 | usb_stor_dbg(us, "Dummy up request for mode page 1\n"); |
1da177e4 LT |
902 | return USB_STOR_TRANSPORT_GOOD; |
903 | ||
904 | } else if ( (srb->cmnd[2] & 0x3F) == 0x3F ) { | |
191648d0 | 905 | usb_stor_dbg(us, "Dummy up request for all mode pages\n"); |
1da177e4 LT |
906 | return USB_STOR_TRANSPORT_GOOD; |
907 | } | |
908 | ||
909 | set_sense_info (5, 0x24, 0); /* invalid field in command */ | |
910 | return USB_STOR_TRANSPORT_FAILED; | |
911 | } | |
912 | ||
913 | if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) { | |
914 | ||
191648d0 JP |
915 | usb_stor_dbg(us, "%s medium removal. Not that I can do anything about it...\n", |
916 | (srb->cmnd[4]&0x03) ? "Prevent" : "Allow"); | |
1da177e4 LT |
917 | |
918 | return USB_STOR_TRANSPORT_GOOD; | |
919 | ||
920 | } | |
921 | ||
922 | if (srb->cmnd[0] == READ_10 || srb->cmnd[0] == WRITE_10) { | |
923 | ||
924 | page = short_pack(srb->cmnd[3], srb->cmnd[2]); | |
925 | page <<= 16; | |
926 | page |= short_pack(srb->cmnd[5], srb->cmnd[4]); | |
927 | pages = short_pack(srb->cmnd[8], srb->cmnd[7]); | |
928 | ||
929 | page <<= info->smallpageshift; | |
930 | ||
931 | // convert page to block and page-within-block | |
932 | ||
933 | lba = page >> info->blockshift; | |
934 | page = page & info->blockmask; | |
935 | ||
936 | // locate physical block corresponding to logical block | |
937 | ||
938 | if (lba >= info->max_log_blks) { | |
939 | ||
191648d0 JP |
940 | usb_stor_dbg(us, "Error: Requested LBA %04X exceeds maximum block %04X\n", |
941 | lba, info->max_log_blks - 1); | |
1da177e4 LT |
942 | |
943 | set_sense_info (5, 0x24, 0); /* invalid field in command */ | |
944 | ||
945 | return USB_STOR_TRANSPORT_FAILED; | |
946 | } | |
947 | ||
948 | pba = info->lba_to_pba[lba]; | |
949 | ||
950 | if (srb->cmnd[0] == WRITE_10) { | |
191648d0 JP |
951 | usb_stor_dbg(us, "WRITE_10: write block %04X (LBA %04X) page %01X pages %d\n", |
952 | pba, lba, page, pages); | |
1da177e4 LT |
953 | |
954 | return sddr55_write_data(us, lba, page, pages); | |
955 | } else { | |
191648d0 JP |
956 | usb_stor_dbg(us, "READ_10: read block %04X (LBA %04X) page %01X pages %d\n", |
957 | pba, lba, page, pages); | |
1da177e4 LT |
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 | ||
aa519be3 | 977 | static struct scsi_host_template sddr55_host_template; |
70fcc005 AS |
978 | |
979 | static int sddr55_probe(struct usb_interface *intf, | |
980 | const struct usb_device_id *id) | |
981 | { | |
982 | struct us_data *us; | |
983 | int result; | |
984 | ||
985 | result = usb_stor_probe1(&us, intf, id, | |
aa519be3 AM |
986 | (id - sddr55_usb_ids) + sddr55_unusual_dev_list, |
987 | &sddr55_host_template); | |
70fcc005 AS |
988 | if (result) |
989 | return result; | |
990 | ||
991 | us->transport_name = "SDDR55"; | |
992 | us->transport = sddr55_transport; | |
993 | us->transport_reset = sddr55_reset; | |
994 | us->max_lun = 0; | |
995 | ||
996 | result = usb_stor_probe2(us); | |
997 | return result; | |
998 | } | |
999 | ||
1000 | static struct usb_driver sddr55_driver = { | |
aa519be3 | 1001 | .name = DRV_NAME, |
70fcc005 AS |
1002 | .probe = sddr55_probe, |
1003 | .disconnect = usb_stor_disconnect, | |
1004 | .suspend = usb_stor_suspend, | |
1005 | .resume = usb_stor_resume, | |
1006 | .reset_resume = usb_stor_reset_resume, | |
1007 | .pre_reset = usb_stor_pre_reset, | |
1008 | .post_reset = usb_stor_post_reset, | |
1009 | .id_table = sddr55_usb_ids, | |
1010 | .soft_unbind = 1, | |
e73b2db6 | 1011 | .no_dynamic_id = 1, |
70fcc005 AS |
1012 | }; |
1013 | ||
aa519be3 | 1014 | module_usb_stor_driver(sddr55_driver, sddr55_host_template, DRV_NAME); |