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1da177e4 LT |
1 | /* Driver for SanDisk SDDR-09 SmartMedia reader |
2 | * | |
3 | * $Id: sddr09.c,v 1.24 2002/04/22 03:39:43 mdharm Exp $ | |
4 | * (c) 2000, 2001 Robert Baruch (autophile@starband.net) | |
5 | * (c) 2002 Andries Brouwer (aeb@cwi.nl) | |
6 | * Developed with the assistance of: | |
7 | * (c) 2002 Alan Stern <stern@rowland.org> | |
8 | * | |
9 | * The SanDisk SDDR-09 SmartMedia reader uses the Shuttle EUSB-01 chip. | |
10 | * This chip is a programmable USB controller. In the SDDR-09, it has | |
11 | * been programmed to obey a certain limited set of SCSI commands. | |
12 | * This driver translates the "real" SCSI commands to the SDDR-09 SCSI | |
13 | * commands. | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or modify it | |
16 | * under the terms of the GNU General Public License as published by the | |
17 | * Free Software Foundation; either version 2, or (at your option) any | |
18 | * later version. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, but | |
21 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
23 | * General Public License for more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License along | |
26 | * with this program; if not, write to the Free Software Foundation, Inc., | |
27 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
28 | */ | |
29 | ||
30 | /* | |
31 | * Known vendor commands: 12 bytes, first byte is opcode | |
32 | * | |
33 | * E7: read scatter gather | |
34 | * E8: read | |
35 | * E9: write | |
36 | * EA: erase | |
37 | * EB: reset | |
38 | * EC: read status | |
39 | * ED: read ID | |
40 | * EE: write CIS (?) | |
41 | * EF: compute checksum (?) | |
42 | */ | |
43 | ||
44 | #include <linux/sched.h> | |
45 | #include <linux/errno.h> | |
46 | #include <linux/slab.h> | |
47 | ||
48 | #include <scsi/scsi.h> | |
49 | #include <scsi/scsi_cmnd.h> | |
50 | ||
51 | #include "usb.h" | |
52 | #include "transport.h" | |
53 | #include "protocol.h" | |
54 | #include "debug.h" | |
55 | #include "sddr09.h" | |
56 | ||
57 | ||
58 | #define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) ) | |
59 | #define LSB_of(s) ((s)&0xFF) | |
60 | #define MSB_of(s) ((s)>>8) | |
61 | ||
62 | /* #define US_DEBUGP printk */ | |
63 | ||
64 | /* | |
65 | * First some stuff that does not belong here: | |
66 | * data on SmartMedia and other cards, completely | |
67 | * unrelated to this driver. | |
68 | * Similar stuff occurs in <linux/mtd/nand_ids.h>. | |
69 | */ | |
70 | ||
71 | struct nand_flash_dev { | |
72 | int model_id; | |
73 | int chipshift; /* 1<<cs bytes total capacity */ | |
74 | char pageshift; /* 1<<ps bytes in a page */ | |
75 | char blockshift; /* 1<<bs pages in an erase block */ | |
76 | char zoneshift; /* 1<<zs blocks in a zone */ | |
77 | /* # of logical blocks is 125/128 of this */ | |
78 | char pageadrlen; /* length of an address in bytes - 1 */ | |
79 | }; | |
80 | ||
81 | /* | |
82 | * NAND Flash Manufacturer ID Codes | |
83 | */ | |
84 | #define NAND_MFR_AMD 0x01 | |
85 | #define NAND_MFR_NATSEMI 0x8f | |
86 | #define NAND_MFR_TOSHIBA 0x98 | |
87 | #define NAND_MFR_SAMSUNG 0xec | |
88 | ||
89 | static inline char *nand_flash_manufacturer(int manuf_id) { | |
90 | switch(manuf_id) { | |
91 | case NAND_MFR_AMD: | |
92 | return "AMD"; | |
93 | case NAND_MFR_NATSEMI: | |
94 | return "NATSEMI"; | |
95 | case NAND_MFR_TOSHIBA: | |
96 | return "Toshiba"; | |
97 | case NAND_MFR_SAMSUNG: | |
98 | return "Samsung"; | |
99 | default: | |
100 | return "unknown"; | |
101 | } | |
102 | } | |
103 | ||
104 | /* | |
105 | * It looks like it is unnecessary to attach manufacturer to the | |
106 | * remaining data: SSFDC prescribes manufacturer-independent id codes. | |
107 | * | |
108 | * 256 MB NAND flash has a 5-byte ID with 2nd byte 0xaa, 0xba, 0xca or 0xda. | |
109 | */ | |
110 | ||
111 | static struct nand_flash_dev nand_flash_ids[] = { | |
112 | /* NAND flash */ | |
113 | { 0x6e, 20, 8, 4, 8, 2}, /* 1 MB */ | |
114 | { 0xe8, 20, 8, 4, 8, 2}, /* 1 MB */ | |
115 | { 0xec, 20, 8, 4, 8, 2}, /* 1 MB */ | |
116 | { 0x64, 21, 8, 4, 9, 2}, /* 2 MB */ | |
117 | { 0xea, 21, 8, 4, 9, 2}, /* 2 MB */ | |
118 | { 0x6b, 22, 9, 4, 9, 2}, /* 4 MB */ | |
119 | { 0xe3, 22, 9, 4, 9, 2}, /* 4 MB */ | |
120 | { 0xe5, 22, 9, 4, 9, 2}, /* 4 MB */ | |
121 | { 0xe6, 23, 9, 4, 10, 2}, /* 8 MB */ | |
122 | { 0x73, 24, 9, 5, 10, 2}, /* 16 MB */ | |
123 | { 0x75, 25, 9, 5, 10, 2}, /* 32 MB */ | |
124 | { 0x76, 26, 9, 5, 10, 3}, /* 64 MB */ | |
125 | { 0x79, 27, 9, 5, 10, 3}, /* 128 MB */ | |
126 | ||
127 | /* MASK ROM */ | |
128 | { 0x5d, 21, 9, 4, 8, 2}, /* 2 MB */ | |
129 | { 0xd5, 22, 9, 4, 9, 2}, /* 4 MB */ | |
130 | { 0xd6, 23, 9, 4, 10, 2}, /* 8 MB */ | |
131 | { 0x57, 24, 9, 4, 11, 2}, /* 16 MB */ | |
132 | { 0x58, 25, 9, 4, 12, 2}, /* 32 MB */ | |
133 | { 0,} | |
134 | }; | |
135 | ||
136 | #define SIZE(a) (sizeof(a)/sizeof((a)[0])) | |
137 | ||
138 | static struct nand_flash_dev * | |
139 | nand_find_id(unsigned char id) { | |
140 | int i; | |
141 | ||
142 | for (i = 0; i < SIZE(nand_flash_ids); i++) | |
143 | if (nand_flash_ids[i].model_id == id) | |
144 | return &(nand_flash_ids[i]); | |
145 | return NULL; | |
146 | } | |
147 | ||
148 | /* | |
149 | * ECC computation. | |
150 | */ | |
151 | static unsigned char parity[256]; | |
152 | static unsigned char ecc2[256]; | |
153 | ||
154 | static void nand_init_ecc(void) { | |
155 | int i, j, a; | |
156 | ||
157 | parity[0] = 0; | |
158 | for (i = 1; i < 256; i++) | |
159 | parity[i] = (parity[i&(i-1)] ^ 1); | |
160 | ||
161 | for (i = 0; i < 256; i++) { | |
162 | a = 0; | |
163 | for (j = 0; j < 8; j++) { | |
164 | if (i & (1<<j)) { | |
165 | if ((j & 1) == 0) | |
166 | a ^= 0x04; | |
167 | if ((j & 2) == 0) | |
168 | a ^= 0x10; | |
169 | if ((j & 4) == 0) | |
170 | a ^= 0x40; | |
171 | } | |
172 | } | |
173 | ecc2[i] = ~(a ^ (a<<1) ^ (parity[i] ? 0xa8 : 0)); | |
174 | } | |
175 | } | |
176 | ||
177 | /* compute 3-byte ecc on 256 bytes */ | |
178 | static void nand_compute_ecc(unsigned char *data, unsigned char *ecc) { | |
179 | int i, j, a; | |
180 | unsigned char par, bit, bits[8]; | |
181 | ||
182 | par = 0; | |
183 | for (j = 0; j < 8; j++) | |
184 | bits[j] = 0; | |
185 | ||
186 | /* collect 16 checksum bits */ | |
187 | for (i = 0; i < 256; i++) { | |
188 | par ^= data[i]; | |
189 | bit = parity[data[i]]; | |
190 | for (j = 0; j < 8; j++) | |
191 | if ((i & (1<<j)) == 0) | |
192 | bits[j] ^= bit; | |
193 | } | |
194 | ||
195 | /* put 4+4+4 = 12 bits in the ecc */ | |
196 | a = (bits[3] << 6) + (bits[2] << 4) + (bits[1] << 2) + bits[0]; | |
197 | ecc[0] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0)); | |
198 | ||
199 | a = (bits[7] << 6) + (bits[6] << 4) + (bits[5] << 2) + bits[4]; | |
200 | ecc[1] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0)); | |
201 | ||
202 | ecc[2] = ecc2[par]; | |
203 | } | |
204 | ||
205 | static int nand_compare_ecc(unsigned char *data, unsigned char *ecc) { | |
206 | return (data[0] == ecc[0] && data[1] == ecc[1] && data[2] == ecc[2]); | |
207 | } | |
208 | ||
209 | static void nand_store_ecc(unsigned char *data, unsigned char *ecc) { | |
210 | memcpy(data, ecc, 3); | |
211 | } | |
212 | ||
213 | /* | |
214 | * The actual driver starts here. | |
215 | */ | |
216 | ||
f5b8cb9c MD |
217 | struct sddr09_card_info { |
218 | unsigned long capacity; /* Size of card in bytes */ | |
219 | int pagesize; /* Size of page in bytes */ | |
220 | int pageshift; /* log2 of pagesize */ | |
221 | int blocksize; /* Size of block in pages */ | |
222 | int blockshift; /* log2 of blocksize */ | |
223 | int blockmask; /* 2^blockshift - 1 */ | |
224 | int *lba_to_pba; /* logical to physical map */ | |
225 | int *pba_to_lba; /* physical to logical map */ | |
226 | int lbact; /* number of available pages */ | |
227 | int flags; | |
228 | #define SDDR09_WP 1 /* write protected */ | |
229 | }; | |
230 | ||
1da177e4 LT |
231 | /* |
232 | * On my 16MB card, control blocks have size 64 (16 real control bytes, | |
233 | * and 48 junk bytes). In reality of course the card uses 16 control bytes, | |
234 | * so the reader makes up the remaining 48. Don't know whether these numbers | |
235 | * depend on the card. For now a constant. | |
236 | */ | |
237 | #define CONTROL_SHIFT 6 | |
238 | ||
239 | /* | |
240 | * On my Combo CF/SM reader, the SM reader has LUN 1. | |
241 | * (and things fail with LUN 0). | |
242 | * It seems LUN is irrelevant for others. | |
243 | */ | |
244 | #define LUN 1 | |
245 | #define LUNBITS (LUN << 5) | |
246 | ||
247 | /* | |
248 | * LBA and PBA are unsigned ints. Special values. | |
249 | */ | |
250 | #define UNDEF 0xffffffff | |
251 | #define SPARE 0xfffffffe | |
252 | #define UNUSABLE 0xfffffffd | |
253 | ||
4c4c9432 | 254 | static const int erase_bad_lba_entries = 0; |
1da177e4 LT |
255 | |
256 | /* send vendor interface command (0x41) */ | |
257 | /* called for requests 0, 1, 8 */ | |
258 | static int | |
259 | sddr09_send_command(struct us_data *us, | |
260 | unsigned char request, | |
261 | unsigned char direction, | |
262 | unsigned char *xfer_data, | |
263 | unsigned int xfer_len) { | |
264 | unsigned int pipe; | |
265 | unsigned char requesttype = (0x41 | direction); | |
266 | int rc; | |
267 | ||
268 | // Get the receive or send control pipe number | |
269 | ||
270 | if (direction == USB_DIR_IN) | |
271 | pipe = us->recv_ctrl_pipe; | |
272 | else | |
273 | pipe = us->send_ctrl_pipe; | |
274 | ||
275 | rc = usb_stor_ctrl_transfer(us, pipe, request, requesttype, | |
276 | 0, 0, xfer_data, xfer_len); | |
0dc08a35 MD |
277 | switch (rc) { |
278 | case USB_STOR_XFER_GOOD: return 0; | |
279 | case USB_STOR_XFER_STALLED: return -EPIPE; | |
280 | default: return -EIO; | |
281 | } | |
1da177e4 LT |
282 | } |
283 | ||
284 | static int | |
285 | sddr09_send_scsi_command(struct us_data *us, | |
286 | unsigned char *command, | |
287 | unsigned int command_len) { | |
288 | return sddr09_send_command(us, 0, USB_DIR_OUT, command, command_len); | |
289 | } | |
290 | ||
291 | #if 0 | |
292 | /* | |
293 | * Test Unit Ready Command: 12 bytes. | |
294 | * byte 0: opcode: 00 | |
295 | */ | |
296 | static int | |
297 | sddr09_test_unit_ready(struct us_data *us) { | |
298 | unsigned char *command = us->iobuf; | |
299 | int result; | |
300 | ||
301 | memset(command, 0, 6); | |
302 | command[1] = LUNBITS; | |
303 | ||
304 | result = sddr09_send_scsi_command(us, command, 6); | |
305 | ||
306 | US_DEBUGP("sddr09_test_unit_ready returns %d\n", result); | |
307 | ||
308 | return result; | |
309 | } | |
310 | #endif | |
311 | ||
312 | /* | |
313 | * Request Sense Command: 12 bytes. | |
314 | * byte 0: opcode: 03 | |
315 | * byte 4: data length | |
316 | */ | |
317 | static int | |
318 | sddr09_request_sense(struct us_data *us, unsigned char *sensebuf, int buflen) { | |
319 | unsigned char *command = us->iobuf; | |
320 | int result; | |
321 | ||
322 | memset(command, 0, 12); | |
323 | command[0] = 0x03; | |
324 | command[1] = LUNBITS; | |
325 | command[4] = buflen; | |
326 | ||
327 | result = sddr09_send_scsi_command(us, command, 12); | |
0dc08a35 | 328 | if (result) |
1da177e4 | 329 | return result; |
1da177e4 LT |
330 | |
331 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, | |
332 | sensebuf, buflen, NULL); | |
0dc08a35 | 333 | return (result == USB_STOR_XFER_GOOD ? 0 : -EIO); |
1da177e4 LT |
334 | } |
335 | ||
336 | /* | |
337 | * Read Command: 12 bytes. | |
338 | * byte 0: opcode: E8 | |
339 | * byte 1: last two bits: 00: read data, 01: read blockwise control, | |
340 | * 10: read both, 11: read pagewise control. | |
341 | * It turns out we need values 20, 21, 22, 23 here (LUN 1). | |
342 | * bytes 2-5: address (interpretation depends on byte 1, see below) | |
343 | * bytes 10-11: count (idem) | |
344 | * | |
345 | * A page has 512 data bytes and 64 control bytes (16 control and 48 junk). | |
346 | * A read data command gets data in 512-byte pages. | |
347 | * A read control command gets control in 64-byte chunks. | |
348 | * A read both command gets data+control in 576-byte chunks. | |
349 | * | |
350 | * Blocks are groups of 32 pages, and read blockwise control jumps to the | |
351 | * next block, while read pagewise control jumps to the next page after | |
352 | * reading a group of 64 control bytes. | |
353 | * [Here 512 = 1<<pageshift, 32 = 1<<blockshift, 64 is constant?] | |
354 | * | |
355 | * (1 MB and 2 MB cards are a bit different, but I have only a 16 MB card.) | |
356 | */ | |
357 | ||
358 | static int | |
359 | sddr09_readX(struct us_data *us, int x, unsigned long fromaddress, | |
360 | int nr_of_pages, int bulklen, unsigned char *buf, | |
361 | int use_sg) { | |
362 | ||
363 | unsigned char *command = us->iobuf; | |
364 | int result; | |
365 | ||
366 | command[0] = 0xE8; | |
367 | command[1] = LUNBITS | x; | |
368 | command[2] = MSB_of(fromaddress>>16); | |
369 | command[3] = LSB_of(fromaddress>>16); | |
370 | command[4] = MSB_of(fromaddress & 0xFFFF); | |
371 | command[5] = LSB_of(fromaddress & 0xFFFF); | |
372 | command[6] = 0; | |
373 | command[7] = 0; | |
374 | command[8] = 0; | |
375 | command[9] = 0; | |
376 | command[10] = MSB_of(nr_of_pages); | |
377 | command[11] = LSB_of(nr_of_pages); | |
378 | ||
379 | result = sddr09_send_scsi_command(us, command, 12); | |
380 | ||
0dc08a35 | 381 | if (result) { |
1da177e4 LT |
382 | US_DEBUGP("Result for send_control in sddr09_read2%d %d\n", |
383 | x, result); | |
384 | return result; | |
385 | } | |
386 | ||
387 | result = usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe, | |
388 | buf, bulklen, use_sg, NULL); | |
389 | ||
390 | if (result != USB_STOR_XFER_GOOD) { | |
391 | US_DEBUGP("Result for bulk_transfer in sddr09_read2%d %d\n", | |
392 | x, result); | |
0dc08a35 | 393 | return -EIO; |
1da177e4 | 394 | } |
0dc08a35 | 395 | return 0; |
1da177e4 LT |
396 | } |
397 | ||
398 | /* | |
399 | * Read Data | |
400 | * | |
401 | * fromaddress counts data shorts: | |
402 | * increasing it by 256 shifts the bytestream by 512 bytes; | |
403 | * the last 8 bits are ignored. | |
404 | * | |
405 | * nr_of_pages counts pages of size (1 << pageshift). | |
406 | */ | |
407 | static int | |
408 | sddr09_read20(struct us_data *us, unsigned long fromaddress, | |
409 | int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) { | |
410 | int bulklen = nr_of_pages << pageshift; | |
411 | ||
412 | /* The last 8 bits of fromaddress are ignored. */ | |
413 | return sddr09_readX(us, 0, fromaddress, nr_of_pages, bulklen, | |
414 | buf, use_sg); | |
415 | } | |
416 | ||
417 | /* | |
418 | * Read Blockwise Control | |
419 | * | |
420 | * fromaddress gives the starting position (as in read data; | |
421 | * the last 8 bits are ignored); increasing it by 32*256 shifts | |
422 | * the output stream by 64 bytes. | |
423 | * | |
424 | * count counts control groups of size (1 << controlshift). | |
425 | * For me, controlshift = 6. Is this constant? | |
426 | * | |
427 | * After getting one control group, jump to the next block | |
428 | * (fromaddress += 8192). | |
429 | */ | |
430 | static int | |
431 | sddr09_read21(struct us_data *us, unsigned long fromaddress, | |
432 | int count, int controlshift, unsigned char *buf, int use_sg) { | |
433 | ||
434 | int bulklen = (count << controlshift); | |
435 | return sddr09_readX(us, 1, fromaddress, count, bulklen, | |
436 | buf, use_sg); | |
437 | } | |
438 | ||
439 | /* | |
440 | * Read both Data and Control | |
441 | * | |
442 | * fromaddress counts data shorts, ignoring control: | |
443 | * increasing it by 256 shifts the bytestream by 576 = 512+64 bytes; | |
444 | * the last 8 bits are ignored. | |
445 | * | |
446 | * nr_of_pages counts pages of size (1 << pageshift) + (1 << controlshift). | |
447 | */ | |
448 | static int | |
449 | sddr09_read22(struct us_data *us, unsigned long fromaddress, | |
450 | int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) { | |
451 | ||
452 | int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT); | |
453 | US_DEBUGP("sddr09_read22: reading %d pages, %d bytes\n", | |
454 | nr_of_pages, bulklen); | |
455 | return sddr09_readX(us, 2, fromaddress, nr_of_pages, bulklen, | |
456 | buf, use_sg); | |
457 | } | |
458 | ||
459 | #if 0 | |
460 | /* | |
461 | * Read Pagewise Control | |
462 | * | |
463 | * fromaddress gives the starting position (as in read data; | |
464 | * the last 8 bits are ignored); increasing it by 256 shifts | |
465 | * the output stream by 64 bytes. | |
466 | * | |
467 | * count counts control groups of size (1 << controlshift). | |
468 | * For me, controlshift = 6. Is this constant? | |
469 | * | |
470 | * After getting one control group, jump to the next page | |
471 | * (fromaddress += 256). | |
472 | */ | |
473 | static int | |
474 | sddr09_read23(struct us_data *us, unsigned long fromaddress, | |
475 | int count, int controlshift, unsigned char *buf, int use_sg) { | |
476 | ||
477 | int bulklen = (count << controlshift); | |
478 | return sddr09_readX(us, 3, fromaddress, count, bulklen, | |
479 | buf, use_sg); | |
480 | } | |
481 | #endif | |
482 | ||
483 | /* | |
484 | * Erase Command: 12 bytes. | |
485 | * byte 0: opcode: EA | |
486 | * bytes 6-9: erase address (big-endian, counting shorts, sector aligned). | |
487 | * | |
488 | * Always precisely one block is erased; bytes 2-5 and 10-11 are ignored. | |
489 | * The byte address being erased is 2*Eaddress. | |
490 | * The CIS cannot be erased. | |
491 | */ | |
492 | static int | |
493 | sddr09_erase(struct us_data *us, unsigned long Eaddress) { | |
494 | unsigned char *command = us->iobuf; | |
495 | int result; | |
496 | ||
497 | US_DEBUGP("sddr09_erase: erase address %lu\n", Eaddress); | |
498 | ||
499 | memset(command, 0, 12); | |
500 | command[0] = 0xEA; | |
501 | command[1] = LUNBITS; | |
502 | command[6] = MSB_of(Eaddress>>16); | |
503 | command[7] = LSB_of(Eaddress>>16); | |
504 | command[8] = MSB_of(Eaddress & 0xFFFF); | |
505 | command[9] = LSB_of(Eaddress & 0xFFFF); | |
506 | ||
507 | result = sddr09_send_scsi_command(us, command, 12); | |
508 | ||
0dc08a35 | 509 | if (result) |
1da177e4 LT |
510 | US_DEBUGP("Result for send_control in sddr09_erase %d\n", |
511 | result); | |
512 | ||
513 | return result; | |
514 | } | |
515 | ||
516 | /* | |
517 | * Write CIS Command: 12 bytes. | |
518 | * byte 0: opcode: EE | |
519 | * bytes 2-5: write address in shorts | |
520 | * bytes 10-11: sector count | |
521 | * | |
522 | * This writes at the indicated address. Don't know how it differs | |
523 | * from E9. Maybe it does not erase? However, it will also write to | |
524 | * the CIS. | |
525 | * | |
526 | * When two such commands on the same page follow each other directly, | |
527 | * the second one is not done. | |
528 | */ | |
529 | ||
530 | /* | |
531 | * Write Command: 12 bytes. | |
532 | * byte 0: opcode: E9 | |
533 | * bytes 2-5: write address (big-endian, counting shorts, sector aligned). | |
534 | * bytes 6-9: erase address (big-endian, counting shorts, sector aligned). | |
535 | * bytes 10-11: sector count (big-endian, in 512-byte sectors). | |
536 | * | |
537 | * If write address equals erase address, the erase is done first, | |
538 | * otherwise the write is done first. When erase address equals zero | |
539 | * no erase is done? | |
540 | */ | |
541 | static int | |
542 | sddr09_writeX(struct us_data *us, | |
543 | unsigned long Waddress, unsigned long Eaddress, | |
544 | int nr_of_pages, int bulklen, unsigned char *buf, int use_sg) { | |
545 | ||
546 | unsigned char *command = us->iobuf; | |
547 | int result; | |
548 | ||
549 | command[0] = 0xE9; | |
550 | command[1] = LUNBITS; | |
551 | ||
552 | command[2] = MSB_of(Waddress>>16); | |
553 | command[3] = LSB_of(Waddress>>16); | |
554 | command[4] = MSB_of(Waddress & 0xFFFF); | |
555 | command[5] = LSB_of(Waddress & 0xFFFF); | |
556 | ||
557 | command[6] = MSB_of(Eaddress>>16); | |
558 | command[7] = LSB_of(Eaddress>>16); | |
559 | command[8] = MSB_of(Eaddress & 0xFFFF); | |
560 | command[9] = LSB_of(Eaddress & 0xFFFF); | |
561 | ||
562 | command[10] = MSB_of(nr_of_pages); | |
563 | command[11] = LSB_of(nr_of_pages); | |
564 | ||
565 | result = sddr09_send_scsi_command(us, command, 12); | |
566 | ||
0dc08a35 | 567 | if (result) { |
1da177e4 LT |
568 | US_DEBUGP("Result for send_control in sddr09_writeX %d\n", |
569 | result); | |
570 | return result; | |
571 | } | |
572 | ||
573 | result = usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe, | |
574 | buf, bulklen, use_sg, NULL); | |
575 | ||
576 | if (result != USB_STOR_XFER_GOOD) { | |
577 | US_DEBUGP("Result for bulk_transfer in sddr09_writeX %d\n", | |
578 | result); | |
0dc08a35 | 579 | return -EIO; |
1da177e4 | 580 | } |
0dc08a35 | 581 | return 0; |
1da177e4 LT |
582 | } |
583 | ||
584 | /* erase address, write same address */ | |
585 | static int | |
586 | sddr09_write_inplace(struct us_data *us, unsigned long address, | |
587 | int nr_of_pages, int pageshift, unsigned char *buf, | |
588 | int use_sg) { | |
589 | int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT); | |
590 | return sddr09_writeX(us, address, address, nr_of_pages, bulklen, | |
591 | buf, use_sg); | |
592 | } | |
593 | ||
594 | #if 0 | |
595 | /* | |
596 | * Read Scatter Gather Command: 3+4n bytes. | |
597 | * byte 0: opcode E7 | |
598 | * byte 2: n | |
599 | * bytes 4i-1,4i,4i+1: page address | |
600 | * byte 4i+2: page count | |
601 | * (i=1..n) | |
602 | * | |
603 | * This reads several pages from the card to a single memory buffer. | |
604 | * The last two bits of byte 1 have the same meaning as for E8. | |
605 | */ | |
606 | static int | |
607 | sddr09_read_sg_test_only(struct us_data *us) { | |
608 | unsigned char *command = us->iobuf; | |
609 | int result, bulklen, nsg, ct; | |
610 | unsigned char *buf; | |
611 | unsigned long address; | |
612 | ||
613 | nsg = bulklen = 0; | |
614 | command[0] = 0xE7; | |
615 | command[1] = LUNBITS; | |
616 | command[2] = 0; | |
617 | address = 040000; ct = 1; | |
618 | nsg++; | |
619 | bulklen += (ct << 9); | |
620 | command[4*nsg+2] = ct; | |
621 | command[4*nsg+1] = ((address >> 9) & 0xFF); | |
622 | command[4*nsg+0] = ((address >> 17) & 0xFF); | |
623 | command[4*nsg-1] = ((address >> 25) & 0xFF); | |
624 | ||
625 | address = 0340000; ct = 1; | |
626 | nsg++; | |
627 | bulklen += (ct << 9); | |
628 | command[4*nsg+2] = ct; | |
629 | command[4*nsg+1] = ((address >> 9) & 0xFF); | |
630 | command[4*nsg+0] = ((address >> 17) & 0xFF); | |
631 | command[4*nsg-1] = ((address >> 25) & 0xFF); | |
632 | ||
633 | address = 01000000; ct = 2; | |
634 | nsg++; | |
635 | bulklen += (ct << 9); | |
636 | command[4*nsg+2] = ct; | |
637 | command[4*nsg+1] = ((address >> 9) & 0xFF); | |
638 | command[4*nsg+0] = ((address >> 17) & 0xFF); | |
639 | command[4*nsg-1] = ((address >> 25) & 0xFF); | |
640 | ||
641 | command[2] = nsg; | |
642 | ||
643 | result = sddr09_send_scsi_command(us, command, 4*nsg+3); | |
644 | ||
0dc08a35 | 645 | if (result) { |
1da177e4 LT |
646 | US_DEBUGP("Result for send_control in sddr09_read_sg %d\n", |
647 | result); | |
648 | return result; | |
649 | } | |
650 | ||
651 | buf = (unsigned char *) kmalloc(bulklen, GFP_NOIO); | |
652 | if (!buf) | |
0dc08a35 | 653 | return -ENOMEM; |
1da177e4 LT |
654 | |
655 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, | |
656 | buf, bulklen, NULL); | |
657 | kfree(buf); | |
658 | if (result != USB_STOR_XFER_GOOD) { | |
659 | US_DEBUGP("Result for bulk_transfer in sddr09_read_sg %d\n", | |
660 | result); | |
0dc08a35 | 661 | return -EIO; |
1da177e4 LT |
662 | } |
663 | ||
0dc08a35 | 664 | return 0; |
1da177e4 LT |
665 | } |
666 | #endif | |
667 | ||
668 | /* | |
669 | * Read Status Command: 12 bytes. | |
670 | * byte 0: opcode: EC | |
671 | * | |
672 | * Returns 64 bytes, all zero except for the first. | |
673 | * bit 0: 1: Error | |
674 | * bit 5: 1: Suspended | |
675 | * bit 6: 1: Ready | |
676 | * bit 7: 1: Not write-protected | |
677 | */ | |
678 | ||
679 | static int | |
680 | sddr09_read_status(struct us_data *us, unsigned char *status) { | |
681 | ||
682 | unsigned char *command = us->iobuf; | |
683 | unsigned char *data = us->iobuf; | |
684 | int result; | |
685 | ||
686 | US_DEBUGP("Reading status...\n"); | |
687 | ||
688 | memset(command, 0, 12); | |
689 | command[0] = 0xEC; | |
690 | command[1] = LUNBITS; | |
691 | ||
692 | result = sddr09_send_scsi_command(us, command, 12); | |
0dc08a35 | 693 | if (result) |
1da177e4 LT |
694 | return result; |
695 | ||
696 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, | |
697 | data, 64, NULL); | |
698 | *status = data[0]; | |
0dc08a35 | 699 | return (result == USB_STOR_XFER_GOOD ? 0 : -EIO); |
1da177e4 LT |
700 | } |
701 | ||
702 | static int | |
703 | sddr09_read_data(struct us_data *us, | |
704 | unsigned long address, | |
705 | unsigned int sectors) { | |
706 | ||
707 | struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra; | |
708 | unsigned char *buffer; | |
709 | unsigned int lba, maxlba, pba; | |
710 | unsigned int page, pages; | |
711 | unsigned int len, index, offset; | |
712 | int result; | |
713 | ||
a6c976c6 MD |
714 | // Figure out the initial LBA and page |
715 | lba = address >> info->blockshift; | |
716 | page = (address & info->blockmask); | |
717 | maxlba = info->capacity >> (info->pageshift + info->blockshift); | |
718 | if (lba >= maxlba) | |
719 | return -EIO; | |
720 | ||
1da177e4 LT |
721 | // Since we only read in one block at a time, we have to create |
722 | // a bounce buffer and move the data a piece at a time between the | |
723 | // bounce buffer and the actual transfer buffer. | |
724 | ||
725 | len = min(sectors, (unsigned int) info->blocksize) * info->pagesize; | |
726 | buffer = kmalloc(len, GFP_NOIO); | |
727 | if (buffer == NULL) { | |
728 | printk("sddr09_read_data: Out of memory\n"); | |
0dc08a35 | 729 | return -ENOMEM; |
1da177e4 LT |
730 | } |
731 | ||
1da177e4 LT |
732 | // This could be made much more efficient by checking for |
733 | // contiguous LBA's. Another exercise left to the student. | |
734 | ||
0dc08a35 | 735 | result = 0; |
1da177e4 LT |
736 | index = offset = 0; |
737 | ||
738 | while (sectors > 0) { | |
739 | ||
740 | /* Find number of pages we can read in this block */ | |
741 | pages = min(sectors, info->blocksize - page); | |
742 | len = pages << info->pageshift; | |
743 | ||
744 | /* Not overflowing capacity? */ | |
745 | if (lba >= maxlba) { | |
746 | US_DEBUGP("Error: Requested lba %u exceeds " | |
747 | "maximum %u\n", lba, maxlba); | |
0dc08a35 | 748 | result = -EIO; |
1da177e4 LT |
749 | break; |
750 | } | |
751 | ||
752 | /* Find where this lba lives on disk */ | |
753 | pba = info->lba_to_pba[lba]; | |
754 | ||
755 | if (pba == UNDEF) { /* this lba was never written */ | |
756 | ||
757 | US_DEBUGP("Read %d zero pages (LBA %d) page %d\n", | |
758 | pages, lba, page); | |
759 | ||
760 | /* This is not really an error. It just means | |
761 | that the block has never been written. | |
0dc08a35 | 762 | Instead of returning an error |
1da177e4 LT |
763 | it is better to return all zero data. */ |
764 | ||
765 | memset(buffer, 0, len); | |
766 | ||
767 | } else { | |
768 | US_DEBUGP("Read %d pages, from PBA %d" | |
769 | " (LBA %d) page %d\n", | |
770 | pages, pba, lba, page); | |
771 | ||
772 | address = ((pba << info->blockshift) + page) << | |
773 | info->pageshift; | |
774 | ||
775 | result = sddr09_read20(us, address>>1, | |
776 | pages, info->pageshift, buffer, 0); | |
0dc08a35 | 777 | if (result) |
1da177e4 LT |
778 | break; |
779 | } | |
780 | ||
781 | // Store the data in the transfer buffer | |
782 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
783 | &index, &offset, TO_XFER_BUF); | |
784 | ||
785 | page = 0; | |
786 | lba++; | |
787 | sectors -= pages; | |
788 | } | |
789 | ||
790 | kfree(buffer); | |
791 | return result; | |
792 | } | |
793 | ||
794 | static unsigned int | |
795 | sddr09_find_unused_pba(struct sddr09_card_info *info, unsigned int lba) { | |
796 | static unsigned int lastpba = 1; | |
797 | int zonestart, end, i; | |
798 | ||
799 | zonestart = (lba/1000) << 10; | |
800 | end = info->capacity >> (info->blockshift + info->pageshift); | |
801 | end -= zonestart; | |
802 | if (end > 1024) | |
803 | end = 1024; | |
804 | ||
805 | for (i = lastpba+1; i < end; i++) { | |
806 | if (info->pba_to_lba[zonestart+i] == UNDEF) { | |
807 | lastpba = i; | |
808 | return zonestart+i; | |
809 | } | |
810 | } | |
811 | for (i = 0; i <= lastpba; i++) { | |
812 | if (info->pba_to_lba[zonestart+i] == UNDEF) { | |
813 | lastpba = i; | |
814 | return zonestart+i; | |
815 | } | |
816 | } | |
817 | return 0; | |
818 | } | |
819 | ||
820 | static int | |
821 | sddr09_write_lba(struct us_data *us, unsigned int lba, | |
822 | unsigned int page, unsigned int pages, | |
823 | unsigned char *ptr, unsigned char *blockbuffer) { | |
824 | ||
825 | struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra; | |
826 | unsigned long address; | |
827 | unsigned int pba, lbap; | |
828 | unsigned int pagelen; | |
829 | unsigned char *bptr, *cptr, *xptr; | |
830 | unsigned char ecc[3]; | |
831 | int i, result, isnew; | |
832 | ||
833 | lbap = ((lba % 1000) << 1) | 0x1000; | |
834 | if (parity[MSB_of(lbap) ^ LSB_of(lbap)]) | |
835 | lbap ^= 1; | |
836 | pba = info->lba_to_pba[lba]; | |
837 | isnew = 0; | |
838 | ||
839 | if (pba == UNDEF) { | |
840 | pba = sddr09_find_unused_pba(info, lba); | |
841 | if (!pba) { | |
842 | printk("sddr09_write_lba: Out of unused blocks\n"); | |
0dc08a35 | 843 | return -ENOSPC; |
1da177e4 LT |
844 | } |
845 | info->pba_to_lba[pba] = lba; | |
846 | info->lba_to_pba[lba] = pba; | |
847 | isnew = 1; | |
848 | } | |
849 | ||
850 | if (pba == 1) { | |
851 | /* Maybe it is impossible to write to PBA 1. | |
852 | Fake success, but don't do anything. */ | |
853 | printk("sddr09: avoid writing to pba 1\n"); | |
0dc08a35 | 854 | return 0; |
1da177e4 LT |
855 | } |
856 | ||
857 | pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT); | |
858 | ||
859 | /* read old contents */ | |
860 | address = (pba << (info->pageshift + info->blockshift)); | |
861 | result = sddr09_read22(us, address>>1, info->blocksize, | |
862 | info->pageshift, blockbuffer, 0); | |
0dc08a35 | 863 | if (result) |
1da177e4 LT |
864 | return result; |
865 | ||
866 | /* check old contents and fill lba */ | |
867 | for (i = 0; i < info->blocksize; i++) { | |
868 | bptr = blockbuffer + i*pagelen; | |
869 | cptr = bptr + info->pagesize; | |
870 | nand_compute_ecc(bptr, ecc); | |
871 | if (!nand_compare_ecc(cptr+13, ecc)) { | |
872 | US_DEBUGP("Warning: bad ecc in page %d- of pba %d\n", | |
873 | i, pba); | |
874 | nand_store_ecc(cptr+13, ecc); | |
875 | } | |
876 | nand_compute_ecc(bptr+(info->pagesize / 2), ecc); | |
877 | if (!nand_compare_ecc(cptr+8, ecc)) { | |
878 | US_DEBUGP("Warning: bad ecc in page %d+ of pba %d\n", | |
879 | i, pba); | |
880 | nand_store_ecc(cptr+8, ecc); | |
881 | } | |
882 | cptr[6] = cptr[11] = MSB_of(lbap); | |
883 | cptr[7] = cptr[12] = LSB_of(lbap); | |
884 | } | |
885 | ||
886 | /* copy in new stuff and compute ECC */ | |
887 | xptr = ptr; | |
888 | for (i = page; i < page+pages; i++) { | |
889 | bptr = blockbuffer + i*pagelen; | |
890 | cptr = bptr + info->pagesize; | |
891 | memcpy(bptr, xptr, info->pagesize); | |
892 | xptr += info->pagesize; | |
893 | nand_compute_ecc(bptr, ecc); | |
894 | nand_store_ecc(cptr+13, ecc); | |
895 | nand_compute_ecc(bptr+(info->pagesize / 2), ecc); | |
896 | nand_store_ecc(cptr+8, ecc); | |
897 | } | |
898 | ||
899 | US_DEBUGP("Rewrite PBA %d (LBA %d)\n", pba, lba); | |
900 | ||
901 | result = sddr09_write_inplace(us, address>>1, info->blocksize, | |
902 | info->pageshift, blockbuffer, 0); | |
903 | ||
904 | US_DEBUGP("sddr09_write_inplace returns %d\n", result); | |
905 | ||
906 | #if 0 | |
907 | { | |
908 | unsigned char status = 0; | |
909 | int result2 = sddr09_read_status(us, &status); | |
0dc08a35 | 910 | if (result2) |
1da177e4 LT |
911 | US_DEBUGP("sddr09_write_inplace: cannot read status\n"); |
912 | else if (status != 0xc0) | |
913 | US_DEBUGP("sddr09_write_inplace: status after write: 0x%x\n", | |
914 | status); | |
915 | } | |
916 | #endif | |
917 | ||
918 | #if 0 | |
919 | { | |
920 | int result2 = sddr09_test_unit_ready(us); | |
921 | } | |
922 | #endif | |
923 | ||
924 | return result; | |
925 | } | |
926 | ||
927 | static int | |
928 | sddr09_write_data(struct us_data *us, | |
929 | unsigned long address, | |
930 | unsigned int sectors) { | |
931 | ||
932 | struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra; | |
a6c976c6 | 933 | unsigned int lba, maxlba, page, pages; |
1da177e4 LT |
934 | unsigned int pagelen, blocklen; |
935 | unsigned char *blockbuffer; | |
936 | unsigned char *buffer; | |
937 | unsigned int len, index, offset; | |
938 | int result; | |
939 | ||
a6c976c6 MD |
940 | // Figure out the initial LBA and page |
941 | lba = address >> info->blockshift; | |
942 | page = (address & info->blockmask); | |
943 | maxlba = info->capacity >> (info->pageshift + info->blockshift); | |
944 | if (lba >= maxlba) | |
945 | return -EIO; | |
946 | ||
1da177e4 LT |
947 | // blockbuffer is used for reading in the old data, overwriting |
948 | // with the new data, and performing ECC calculations | |
949 | ||
950 | /* TODO: instead of doing kmalloc/kfree for each write, | |
951 | add a bufferpointer to the info structure */ | |
952 | ||
953 | pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT); | |
954 | blocklen = (pagelen << info->blockshift); | |
955 | blockbuffer = kmalloc(blocklen, GFP_NOIO); | |
956 | if (!blockbuffer) { | |
957 | printk("sddr09_write_data: Out of memory\n"); | |
0dc08a35 | 958 | return -ENOMEM; |
1da177e4 LT |
959 | } |
960 | ||
961 | // Since we don't write the user data directly to the device, | |
962 | // we have to create a bounce buffer and move the data a piece | |
963 | // at a time between the bounce buffer and the actual transfer buffer. | |
964 | ||
965 | len = min(sectors, (unsigned int) info->blocksize) * info->pagesize; | |
966 | buffer = kmalloc(len, GFP_NOIO); | |
967 | if (buffer == NULL) { | |
968 | printk("sddr09_write_data: Out of memory\n"); | |
969 | kfree(blockbuffer); | |
0dc08a35 | 970 | return -ENOMEM; |
1da177e4 LT |
971 | } |
972 | ||
0dc08a35 | 973 | result = 0; |
1da177e4 LT |
974 | index = offset = 0; |
975 | ||
976 | while (sectors > 0) { | |
977 | ||
978 | // Write as many sectors as possible in this block | |
979 | ||
980 | pages = min(sectors, info->blocksize - page); | |
981 | len = (pages << info->pageshift); | |
982 | ||
a6c976c6 MD |
983 | /* Not overflowing capacity? */ |
984 | if (lba >= maxlba) { | |
985 | US_DEBUGP("Error: Requested lba %u exceeds " | |
986 | "maximum %u\n", lba, maxlba); | |
987 | result = -EIO; | |
988 | break; | |
989 | } | |
990 | ||
1da177e4 LT |
991 | // Get the data from the transfer buffer |
992 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
993 | &index, &offset, FROM_XFER_BUF); | |
994 | ||
995 | result = sddr09_write_lba(us, lba, page, pages, | |
996 | buffer, blockbuffer); | |
0dc08a35 | 997 | if (result) |
1da177e4 LT |
998 | break; |
999 | ||
1000 | page = 0; | |
1001 | lba++; | |
1002 | sectors -= pages; | |
1003 | } | |
1004 | ||
1005 | kfree(buffer); | |
1006 | kfree(blockbuffer); | |
1007 | ||
1008 | return result; | |
1009 | } | |
1010 | ||
1011 | static int | |
1012 | sddr09_read_control(struct us_data *us, | |
1013 | unsigned long address, | |
1014 | unsigned int blocks, | |
1015 | unsigned char *content, | |
1016 | int use_sg) { | |
1017 | ||
1018 | US_DEBUGP("Read control address %lu, blocks %d\n", | |
1019 | address, blocks); | |
1020 | ||
1021 | return sddr09_read21(us, address, blocks, | |
1022 | CONTROL_SHIFT, content, use_sg); | |
1023 | } | |
1024 | ||
1025 | /* | |
1026 | * Read Device ID Command: 12 bytes. | |
1027 | * byte 0: opcode: ED | |
1028 | * | |
1029 | * Returns 2 bytes: Manufacturer ID and Device ID. | |
1030 | * On more recent cards 3 bytes: the third byte is an option code A5 | |
1031 | * signifying that the secret command to read an 128-bit ID is available. | |
1032 | * On still more recent cards 4 bytes: the fourth byte C0 means that | |
1033 | * a second read ID cmd is available. | |
1034 | */ | |
1035 | static int | |
1036 | sddr09_read_deviceID(struct us_data *us, unsigned char *deviceID) { | |
1037 | unsigned char *command = us->iobuf; | |
1038 | unsigned char *content = us->iobuf; | |
1039 | int result, i; | |
1040 | ||
1041 | memset(command, 0, 12); | |
1042 | command[0] = 0xED; | |
1043 | command[1] = LUNBITS; | |
1044 | ||
1045 | result = sddr09_send_scsi_command(us, command, 12); | |
0dc08a35 | 1046 | if (result) |
1da177e4 LT |
1047 | return result; |
1048 | ||
1049 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, | |
1050 | content, 64, NULL); | |
1051 | ||
1052 | for (i = 0; i < 4; i++) | |
1053 | deviceID[i] = content[i]; | |
1054 | ||
0dc08a35 | 1055 | return (result == USB_STOR_XFER_GOOD ? 0 : -EIO); |
1da177e4 LT |
1056 | } |
1057 | ||
1058 | static int | |
1059 | sddr09_get_wp(struct us_data *us, struct sddr09_card_info *info) { | |
1060 | int result; | |
1061 | unsigned char status; | |
1062 | ||
1063 | result = sddr09_read_status(us, &status); | |
0dc08a35 | 1064 | if (result) { |
1da177e4 LT |
1065 | US_DEBUGP("sddr09_get_wp: read_status fails\n"); |
1066 | return result; | |
1067 | } | |
1068 | US_DEBUGP("sddr09_get_wp: status 0x%02X", status); | |
1069 | if ((status & 0x80) == 0) { | |
1070 | info->flags |= SDDR09_WP; /* write protected */ | |
1071 | US_DEBUGP(" WP"); | |
1072 | } | |
1073 | if (status & 0x40) | |
1074 | US_DEBUGP(" Ready"); | |
1075 | if (status & LUNBITS) | |
1076 | US_DEBUGP(" Suspended"); | |
1077 | if (status & 0x1) | |
1078 | US_DEBUGP(" Error"); | |
1079 | US_DEBUGP("\n"); | |
0dc08a35 | 1080 | return 0; |
1da177e4 LT |
1081 | } |
1082 | ||
1083 | #if 0 | |
1084 | /* | |
1085 | * Reset Command: 12 bytes. | |
1086 | * byte 0: opcode: EB | |
1087 | */ | |
1088 | static int | |
1089 | sddr09_reset(struct us_data *us) { | |
1090 | ||
1091 | unsigned char *command = us->iobuf; | |
1092 | ||
1093 | memset(command, 0, 12); | |
1094 | command[0] = 0xEB; | |
1095 | command[1] = LUNBITS; | |
1096 | ||
1097 | return sddr09_send_scsi_command(us, command, 12); | |
1098 | } | |
1099 | #endif | |
1100 | ||
1101 | static struct nand_flash_dev * | |
1102 | sddr09_get_cardinfo(struct us_data *us, unsigned char flags) { | |
1103 | struct nand_flash_dev *cardinfo; | |
1104 | unsigned char deviceID[4]; | |
1105 | char blurbtxt[256]; | |
1106 | int result; | |
1107 | ||
1108 | US_DEBUGP("Reading capacity...\n"); | |
1109 | ||
1110 | result = sddr09_read_deviceID(us, deviceID); | |
1111 | ||
0dc08a35 | 1112 | if (result) { |
1da177e4 LT |
1113 | US_DEBUGP("Result of read_deviceID is %d\n", result); |
1114 | printk("sddr09: could not read card info\n"); | |
1115 | return NULL; | |
1116 | } | |
1117 | ||
1118 | sprintf(blurbtxt, "sddr09: Found Flash card, ID = %02X %02X %02X %02X", | |
1119 | deviceID[0], deviceID[1], deviceID[2], deviceID[3]); | |
1120 | ||
1121 | /* Byte 0 is the manufacturer */ | |
1122 | sprintf(blurbtxt + strlen(blurbtxt), | |
1123 | ": Manuf. %s", | |
1124 | nand_flash_manufacturer(deviceID[0])); | |
1125 | ||
1126 | /* Byte 1 is the device type */ | |
1127 | cardinfo = nand_find_id(deviceID[1]); | |
1128 | if (cardinfo) { | |
1129 | /* MB or MiB? It is neither. A 16 MB card has | |
1130 | 17301504 raw bytes, of which 16384000 are | |
1131 | usable for user data. */ | |
1132 | sprintf(blurbtxt + strlen(blurbtxt), | |
1133 | ", %d MB", 1<<(cardinfo->chipshift - 20)); | |
1134 | } else { | |
1135 | sprintf(blurbtxt + strlen(blurbtxt), | |
1136 | ", type unrecognized"); | |
1137 | } | |
1138 | ||
1139 | /* Byte 2 is code to signal availability of 128-bit ID */ | |
1140 | if (deviceID[2] == 0xa5) { | |
1141 | sprintf(blurbtxt + strlen(blurbtxt), | |
1142 | ", 128-bit ID"); | |
1143 | } | |
1144 | ||
1145 | /* Byte 3 announces the availability of another read ID command */ | |
1146 | if (deviceID[3] == 0xc0) { | |
1147 | sprintf(blurbtxt + strlen(blurbtxt), | |
1148 | ", extra cmd"); | |
1149 | } | |
1150 | ||
1151 | if (flags & SDDR09_WP) | |
1152 | sprintf(blurbtxt + strlen(blurbtxt), | |
1153 | ", WP"); | |
1154 | ||
1155 | printk("%s\n", blurbtxt); | |
1156 | ||
1157 | return cardinfo; | |
1158 | } | |
1159 | ||
1160 | static int | |
1161 | sddr09_read_map(struct us_data *us) { | |
1162 | ||
1163 | struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra; | |
1164 | int numblocks, alloc_len, alloc_blocks; | |
1165 | int i, j, result; | |
1166 | unsigned char *buffer, *buffer_end, *ptr; | |
1167 | unsigned int lba, lbact; | |
1168 | ||
1169 | if (!info->capacity) | |
1170 | return -1; | |
1171 | ||
1172 | // size of a block is 1 << (blockshift + pageshift) bytes | |
1173 | // divide into the total capacity to get the number of blocks | |
1174 | ||
1175 | numblocks = info->capacity >> (info->blockshift + info->pageshift); | |
1176 | ||
1177 | // read 64 bytes for every block (actually 1 << CONTROL_SHIFT) | |
1178 | // but only use a 64 KB buffer | |
1179 | // buffer size used must be a multiple of (1 << CONTROL_SHIFT) | |
1180 | #define SDDR09_READ_MAP_BUFSZ 65536 | |
1181 | ||
1182 | alloc_blocks = min(numblocks, SDDR09_READ_MAP_BUFSZ >> CONTROL_SHIFT); | |
1183 | alloc_len = (alloc_blocks << CONTROL_SHIFT); | |
1184 | buffer = kmalloc(alloc_len, GFP_NOIO); | |
1185 | if (buffer == NULL) { | |
1186 | printk("sddr09_read_map: out of memory\n"); | |
1187 | result = -1; | |
1188 | goto done; | |
1189 | } | |
1190 | buffer_end = buffer + alloc_len; | |
1191 | ||
1192 | #undef SDDR09_READ_MAP_BUFSZ | |
1193 | ||
1194 | kfree(info->lba_to_pba); | |
1195 | kfree(info->pba_to_lba); | |
1196 | info->lba_to_pba = kmalloc(numblocks*sizeof(int), GFP_NOIO); | |
1197 | info->pba_to_lba = kmalloc(numblocks*sizeof(int), GFP_NOIO); | |
1198 | ||
1199 | if (info->lba_to_pba == NULL || info->pba_to_lba == NULL) { | |
1200 | printk("sddr09_read_map: out of memory\n"); | |
1201 | result = -1; | |
1202 | goto done; | |
1203 | } | |
1204 | ||
1205 | for (i = 0; i < numblocks; i++) | |
1206 | info->lba_to_pba[i] = info->pba_to_lba[i] = UNDEF; | |
1207 | ||
1208 | /* | |
1209 | * Define lba-pba translation table | |
1210 | */ | |
1211 | ||
1212 | ptr = buffer_end; | |
1213 | for (i = 0; i < numblocks; i++) { | |
1214 | ptr += (1 << CONTROL_SHIFT); | |
1215 | if (ptr >= buffer_end) { | |
1216 | unsigned long address; | |
1217 | ||
1218 | address = i << (info->pageshift + info->blockshift); | |
1219 | result = sddr09_read_control( | |
1220 | us, address>>1, | |
1221 | min(alloc_blocks, numblocks - i), | |
1222 | buffer, 0); | |
0dc08a35 | 1223 | if (result) { |
1da177e4 LT |
1224 | result = -1; |
1225 | goto done; | |
1226 | } | |
1227 | ptr = buffer; | |
1228 | } | |
1229 | ||
1230 | if (i == 0 || i == 1) { | |
1231 | info->pba_to_lba[i] = UNUSABLE; | |
1232 | continue; | |
1233 | } | |
1234 | ||
1235 | /* special PBAs have control field 0^16 */ | |
1236 | for (j = 0; j < 16; j++) | |
1237 | if (ptr[j] != 0) | |
1238 | goto nonz; | |
1239 | info->pba_to_lba[i] = UNUSABLE; | |
1240 | printk("sddr09: PBA %d has no logical mapping\n", i); | |
1241 | continue; | |
1242 | ||
1243 | nonz: | |
1244 | /* unwritten PBAs have control field FF^16 */ | |
1245 | for (j = 0; j < 16; j++) | |
1246 | if (ptr[j] != 0xff) | |
1247 | goto nonff; | |
1248 | continue; | |
1249 | ||
1250 | nonff: | |
1251 | /* normal PBAs start with six FFs */ | |
1252 | if (j < 6) { | |
1253 | printk("sddr09: PBA %d has no logical mapping: " | |
1254 | "reserved area = %02X%02X%02X%02X " | |
1255 | "data status %02X block status %02X\n", | |
1256 | i, ptr[0], ptr[1], ptr[2], ptr[3], | |
1257 | ptr[4], ptr[5]); | |
1258 | info->pba_to_lba[i] = UNUSABLE; | |
1259 | continue; | |
1260 | } | |
1261 | ||
1262 | if ((ptr[6] >> 4) != 0x01) { | |
1263 | printk("sddr09: PBA %d has invalid address field " | |
1264 | "%02X%02X/%02X%02X\n", | |
1265 | i, ptr[6], ptr[7], ptr[11], ptr[12]); | |
1266 | info->pba_to_lba[i] = UNUSABLE; | |
1267 | continue; | |
1268 | } | |
1269 | ||
1270 | /* check even parity */ | |
1271 | if (parity[ptr[6] ^ ptr[7]]) { | |
1272 | printk("sddr09: Bad parity in LBA for block %d" | |
1273 | " (%02X %02X)\n", i, ptr[6], ptr[7]); | |
1274 | info->pba_to_lba[i] = UNUSABLE; | |
1275 | continue; | |
1276 | } | |
1277 | ||
1278 | lba = short_pack(ptr[7], ptr[6]); | |
1279 | lba = (lba & 0x07FF) >> 1; | |
1280 | ||
1281 | /* | |
1282 | * Every 1024 physical blocks ("zone"), the LBA numbers | |
1283 | * go back to zero, but are within a higher block of LBA's. | |
1284 | * Also, there is a maximum of 1000 LBA's per zone. | |
1285 | * In other words, in PBA 1024-2047 you will find LBA 0-999 | |
1286 | * which are really LBA 1000-1999. This allows for 24 bad | |
1287 | * or special physical blocks per zone. | |
1288 | */ | |
1289 | ||
1290 | if (lba >= 1000) { | |
1291 | printk("sddr09: Bad low LBA %d for block %d\n", | |
1292 | lba, i); | |
1293 | goto possibly_erase; | |
1294 | } | |
1295 | ||
1296 | lba += 1000*(i/0x400); | |
1297 | ||
1298 | if (info->lba_to_pba[lba] != UNDEF) { | |
1299 | printk("sddr09: LBA %d seen for PBA %d and %d\n", | |
1300 | lba, info->lba_to_pba[lba], i); | |
1301 | goto possibly_erase; | |
1302 | } | |
1303 | ||
1304 | info->pba_to_lba[i] = lba; | |
1305 | info->lba_to_pba[lba] = i; | |
1306 | continue; | |
1307 | ||
1308 | possibly_erase: | |
1309 | if (erase_bad_lba_entries) { | |
1310 | unsigned long address; | |
1311 | ||
1312 | address = (i << (info->pageshift + info->blockshift)); | |
1313 | sddr09_erase(us, address>>1); | |
1314 | info->pba_to_lba[i] = UNDEF; | |
1315 | } else | |
1316 | info->pba_to_lba[i] = UNUSABLE; | |
1317 | } | |
1318 | ||
1319 | /* | |
1320 | * Approximate capacity. This is not entirely correct yet, | |
1321 | * since a zone with less than 1000 usable pages leads to | |
1322 | * missing LBAs. Especially if it is the last zone, some | |
1323 | * LBAs can be past capacity. | |
1324 | */ | |
1325 | lbact = 0; | |
1326 | for (i = 0; i < numblocks; i += 1024) { | |
1327 | int ct = 0; | |
1328 | ||
1329 | for (j = 0; j < 1024 && i+j < numblocks; j++) { | |
1330 | if (info->pba_to_lba[i+j] != UNUSABLE) { | |
1331 | if (ct >= 1000) | |
1332 | info->pba_to_lba[i+j] = SPARE; | |
1333 | else | |
1334 | ct++; | |
1335 | } | |
1336 | } | |
1337 | lbact += ct; | |
1338 | } | |
1339 | info->lbact = lbact; | |
1340 | US_DEBUGP("Found %d LBA's\n", lbact); | |
1341 | result = 0; | |
1342 | ||
1343 | done: | |
1344 | if (result != 0) { | |
1345 | kfree(info->lba_to_pba); | |
1346 | kfree(info->pba_to_lba); | |
1347 | info->lba_to_pba = NULL; | |
1348 | info->pba_to_lba = NULL; | |
1349 | } | |
1350 | kfree(buffer); | |
1351 | return result; | |
1352 | } | |
1353 | ||
1354 | static void | |
1355 | sddr09_card_info_destructor(void *extra) { | |
1356 | struct sddr09_card_info *info = (struct sddr09_card_info *)extra; | |
1357 | ||
1358 | if (!info) | |
1359 | return; | |
1360 | ||
1361 | kfree(info->lba_to_pba); | |
1362 | kfree(info->pba_to_lba); | |
1363 | } | |
1364 | ||
f5b8cb9c MD |
1365 | static int |
1366 | sddr09_common_init(struct us_data *us) { | |
1367 | int result; | |
1368 | ||
1369 | /* set the configuration -- STALL is an acceptable response here */ | |
1370 | if (us->pusb_dev->actconfig->desc.bConfigurationValue != 1) { | |
1371 | US_DEBUGP("active config #%d != 1 ??\n", us->pusb_dev | |
1372 | ->actconfig->desc.bConfigurationValue); | |
1373 | return -EINVAL; | |
1374 | } | |
1375 | ||
1376 | result = usb_reset_configuration(us->pusb_dev); | |
1377 | US_DEBUGP("Result of usb_reset_configuration is %d\n", result); | |
1378 | if (result == -EPIPE) { | |
1379 | US_DEBUGP("-- stall on control interface\n"); | |
1380 | } else if (result != 0) { | |
1381 | /* it's not a stall, but another error -- time to bail */ | |
1382 | US_DEBUGP("-- Unknown error. Rejecting device\n"); | |
1383 | return -EINVAL; | |
1da177e4 | 1384 | } |
f5b8cb9c MD |
1385 | |
1386 | us->extra = kzalloc(sizeof(struct sddr09_card_info), GFP_NOIO); | |
1387 | if (!us->extra) | |
1388 | return -ENOMEM; | |
1389 | us->extra_destructor = sddr09_card_info_destructor; | |
1390 | ||
1391 | nand_init_ecc(); | |
1392 | return 0; | |
1da177e4 LT |
1393 | } |
1394 | ||
f5b8cb9c | 1395 | |
1da177e4 LT |
1396 | /* |
1397 | * This is needed at a very early stage. If this is not listed in the | |
1398 | * unusual devices list but called from here then LUN 0 of the combo reader | |
1399 | * is not recognized. But I do not know what precisely these calls do. | |
1400 | */ | |
1401 | int | |
f5b8cb9c | 1402 | usb_stor_sddr09_dpcm_init(struct us_data *us) { |
1da177e4 LT |
1403 | int result; |
1404 | unsigned char *data = us->iobuf; | |
1405 | ||
f5b8cb9c MD |
1406 | result = sddr09_common_init(us); |
1407 | if (result) | |
1408 | return result; | |
1409 | ||
1da177e4 | 1410 | result = sddr09_send_command(us, 0x01, USB_DIR_IN, data, 2); |
0dc08a35 | 1411 | if (result) { |
1da177e4 LT |
1412 | US_DEBUGP("sddr09_init: send_command fails\n"); |
1413 | return result; | |
1414 | } | |
1415 | ||
1416 | US_DEBUGP("SDDR09init: %02X %02X\n", data[0], data[1]); | |
1417 | // get 07 02 | |
1418 | ||
1419 | result = sddr09_send_command(us, 0x08, USB_DIR_IN, data, 2); | |
0dc08a35 | 1420 | if (result) { |
1da177e4 LT |
1421 | US_DEBUGP("sddr09_init: 2nd send_command fails\n"); |
1422 | return result; | |
1423 | } | |
1424 | ||
1425 | US_DEBUGP("SDDR09init: %02X %02X\n", data[0], data[1]); | |
1426 | // get 07 00 | |
1427 | ||
1428 | result = sddr09_request_sense(us, data, 18); | |
0dc08a35 | 1429 | if (result == 0 && data[2] != 0) { |
1da177e4 LT |
1430 | int j; |
1431 | for (j=0; j<18; j++) | |
1432 | printk(" %02X", data[j]); | |
1433 | printk("\n"); | |
1434 | // get 70 00 00 00 00 00 00 * 00 00 00 00 00 00 | |
1435 | // 70: current command | |
1436 | // sense key 0, sense code 0, extd sense code 0 | |
1437 | // additional transfer length * = sizeof(data) - 7 | |
1438 | // Or: 70 00 06 00 00 00 00 0b 00 00 00 00 28 00 00 00 00 00 | |
1439 | // sense key 06, sense code 28: unit attention, | |
1440 | // not ready to ready transition | |
1441 | } | |
1442 | ||
1443 | // test unit ready | |
1444 | ||
f5b8cb9c | 1445 | return 0; /* not result */ |
1da177e4 LT |
1446 | } |
1447 | ||
1448 | /* | |
1449 | * Transport for the Sandisk SDDR-09 | |
1450 | */ | |
1451 | int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us) | |
1452 | { | |
1453 | static unsigned char sensekey = 0, sensecode = 0; | |
1454 | static unsigned char havefakesense = 0; | |
1455 | int result, i; | |
1456 | unsigned char *ptr = us->iobuf; | |
1457 | unsigned long capacity; | |
1458 | unsigned int page, pages; | |
1459 | ||
1460 | struct sddr09_card_info *info; | |
1461 | ||
1462 | static unsigned char inquiry_response[8] = { | |
1463 | 0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00 | |
1464 | }; | |
1465 | ||
1466 | /* note: no block descriptor support */ | |
1467 | static unsigned char mode_page_01[19] = { | |
1468 | 0x00, 0x0F, 0x00, 0x0, 0x0, 0x0, 0x00, | |
1469 | 0x01, 0x0A, | |
1470 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
1471 | }; | |
1472 | ||
1473 | info = (struct sddr09_card_info *)us->extra; | |
1da177e4 LT |
1474 | |
1475 | if (srb->cmnd[0] == REQUEST_SENSE && havefakesense) { | |
1476 | /* for a faked command, we have to follow with a faked sense */ | |
1477 | memset(ptr, 0, 18); | |
1478 | ptr[0] = 0x70; | |
1479 | ptr[2] = sensekey; | |
1480 | ptr[7] = 11; | |
1481 | ptr[12] = sensecode; | |
1482 | usb_stor_set_xfer_buf(ptr, 18, srb); | |
1483 | sensekey = sensecode = havefakesense = 0; | |
1484 | return USB_STOR_TRANSPORT_GOOD; | |
1485 | } | |
1486 | ||
1487 | havefakesense = 1; | |
1488 | ||
1489 | /* Dummy up a response for INQUIRY since SDDR09 doesn't | |
1490 | respond to INQUIRY commands */ | |
1491 | ||
1492 | if (srb->cmnd[0] == INQUIRY) { | |
1493 | memcpy(ptr, inquiry_response, 8); | |
1494 | fill_inquiry_response(us, ptr, 36); | |
1495 | return USB_STOR_TRANSPORT_GOOD; | |
1496 | } | |
1497 | ||
1498 | if (srb->cmnd[0] == READ_CAPACITY) { | |
1499 | struct nand_flash_dev *cardinfo; | |
1500 | ||
1501 | sddr09_get_wp(us, info); /* read WP bit */ | |
1502 | ||
1503 | cardinfo = sddr09_get_cardinfo(us, info->flags); | |
1504 | if (!cardinfo) { | |
1505 | /* probably no media */ | |
1506 | init_error: | |
1507 | sensekey = 0x02; /* not ready */ | |
1508 | sensecode = 0x3a; /* medium not present */ | |
1509 | return USB_STOR_TRANSPORT_FAILED; | |
1510 | } | |
1511 | ||
1512 | info->capacity = (1 << cardinfo->chipshift); | |
1513 | info->pageshift = cardinfo->pageshift; | |
1514 | info->pagesize = (1 << info->pageshift); | |
1515 | info->blockshift = cardinfo->blockshift; | |
1516 | info->blocksize = (1 << info->blockshift); | |
1517 | info->blockmask = info->blocksize - 1; | |
1518 | ||
1519 | // map initialization, must follow get_cardinfo() | |
1520 | if (sddr09_read_map(us)) { | |
1521 | /* probably out of memory */ | |
1522 | goto init_error; | |
1523 | } | |
1524 | ||
1525 | // Report capacity | |
1526 | ||
1527 | capacity = (info->lbact << info->blockshift) - 1; | |
1528 | ||
1529 | ((__be32 *) ptr)[0] = cpu_to_be32(capacity); | |
1530 | ||
1531 | // Report page size | |
1532 | ||
1533 | ((__be32 *) ptr)[1] = cpu_to_be32(info->pagesize); | |
1534 | usb_stor_set_xfer_buf(ptr, 8, srb); | |
1535 | ||
1536 | return USB_STOR_TRANSPORT_GOOD; | |
1537 | } | |
1538 | ||
1539 | if (srb->cmnd[0] == MODE_SENSE_10) { | |
1540 | int modepage = (srb->cmnd[2] & 0x3F); | |
1541 | ||
1542 | /* They ask for the Read/Write error recovery page, | |
1543 | or for all pages. */ | |
1544 | /* %% We should check DBD %% */ | |
1545 | if (modepage == 0x01 || modepage == 0x3F) { | |
1546 | US_DEBUGP("SDDR09: Dummy up request for " | |
1547 | "mode page 0x%x\n", modepage); | |
1548 | ||
1549 | memcpy(ptr, mode_page_01, sizeof(mode_page_01)); | |
1550 | ((__be16*)ptr)[0] = cpu_to_be16(sizeof(mode_page_01) - 2); | |
1551 | ptr[3] = (info->flags & SDDR09_WP) ? 0x80 : 0; | |
1552 | usb_stor_set_xfer_buf(ptr, sizeof(mode_page_01), srb); | |
1553 | return USB_STOR_TRANSPORT_GOOD; | |
1554 | } | |
1555 | ||
1556 | sensekey = 0x05; /* illegal request */ | |
1557 | sensecode = 0x24; /* invalid field in CDB */ | |
1558 | return USB_STOR_TRANSPORT_FAILED; | |
1559 | } | |
1560 | ||
1561 | if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) | |
1562 | return USB_STOR_TRANSPORT_GOOD; | |
1563 | ||
1564 | havefakesense = 0; | |
1565 | ||
1566 | if (srb->cmnd[0] == READ_10) { | |
1567 | ||
1568 | page = short_pack(srb->cmnd[3], srb->cmnd[2]); | |
1569 | page <<= 16; | |
1570 | page |= short_pack(srb->cmnd[5], srb->cmnd[4]); | |
1571 | pages = short_pack(srb->cmnd[8], srb->cmnd[7]); | |
1572 | ||
1573 | US_DEBUGP("READ_10: read page %d pagect %d\n", | |
1574 | page, pages); | |
1575 | ||
0dc08a35 MD |
1576 | result = sddr09_read_data(us, page, pages); |
1577 | return (result == 0 ? USB_STOR_TRANSPORT_GOOD : | |
1578 | USB_STOR_TRANSPORT_ERROR); | |
1da177e4 LT |
1579 | } |
1580 | ||
1581 | if (srb->cmnd[0] == WRITE_10) { | |
1582 | ||
1583 | page = short_pack(srb->cmnd[3], srb->cmnd[2]); | |
1584 | page <<= 16; | |
1585 | page |= short_pack(srb->cmnd[5], srb->cmnd[4]); | |
1586 | pages = short_pack(srb->cmnd[8], srb->cmnd[7]); | |
1587 | ||
1588 | US_DEBUGP("WRITE_10: write page %d pagect %d\n", | |
1589 | page, pages); | |
1590 | ||
0dc08a35 MD |
1591 | result = sddr09_write_data(us, page, pages); |
1592 | return (result == 0 ? USB_STOR_TRANSPORT_GOOD : | |
1593 | USB_STOR_TRANSPORT_ERROR); | |
1da177e4 LT |
1594 | } |
1595 | ||
1596 | /* catch-all for all other commands, except | |
1597 | * pass TEST_UNIT_READY and REQUEST_SENSE through | |
1598 | */ | |
1599 | if (srb->cmnd[0] != TEST_UNIT_READY && | |
1600 | srb->cmnd[0] != REQUEST_SENSE) { | |
1601 | sensekey = 0x05; /* illegal request */ | |
1602 | sensecode = 0x20; /* invalid command */ | |
1603 | havefakesense = 1; | |
1604 | return USB_STOR_TRANSPORT_FAILED; | |
1605 | } | |
1606 | ||
1607 | for (; srb->cmd_len<12; srb->cmd_len++) | |
1608 | srb->cmnd[srb->cmd_len] = 0; | |
1609 | ||
1610 | srb->cmnd[1] = LUNBITS; | |
1611 | ||
1612 | ptr[0] = 0; | |
1613 | for (i=0; i<12; i++) | |
1614 | sprintf(ptr+strlen(ptr), "%02X ", srb->cmnd[i]); | |
1615 | ||
1616 | US_DEBUGP("SDDR09: Send control for command %s\n", ptr); | |
1617 | ||
1618 | result = sddr09_send_scsi_command(us, srb->cmnd, 12); | |
0dc08a35 | 1619 | if (result) { |
1da177e4 LT |
1620 | US_DEBUGP("sddr09_transport: sddr09_send_scsi_command " |
1621 | "returns %d\n", result); | |
0dc08a35 | 1622 | return USB_STOR_TRANSPORT_ERROR; |
1da177e4 LT |
1623 | } |
1624 | ||
1625 | if (srb->request_bufflen == 0) | |
1626 | return USB_STOR_TRANSPORT_GOOD; | |
1627 | ||
1628 | if (srb->sc_data_direction == DMA_TO_DEVICE || | |
1629 | srb->sc_data_direction == DMA_FROM_DEVICE) { | |
1630 | unsigned int pipe = (srb->sc_data_direction == DMA_TO_DEVICE) | |
1631 | ? us->send_bulk_pipe : us->recv_bulk_pipe; | |
1632 | ||
1633 | US_DEBUGP("SDDR09: %s %d bytes\n", | |
1634 | (srb->sc_data_direction == DMA_TO_DEVICE) ? | |
1635 | "sending" : "receiving", | |
1636 | srb->request_bufflen); | |
1637 | ||
1638 | result = usb_stor_bulk_transfer_sg(us, pipe, | |
1639 | srb->request_buffer, | |
1640 | srb->request_bufflen, | |
1641 | srb->use_sg, &srb->resid); | |
1642 | ||
1643 | return (result == USB_STOR_XFER_GOOD ? | |
1644 | USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR); | |
1645 | } | |
1646 | ||
1647 | return USB_STOR_TRANSPORT_GOOD; | |
1648 | } | |
1649 | ||
f5b8cb9c MD |
1650 | /* |
1651 | * Initialization routine for the sddr09 subdriver | |
1652 | */ | |
1653 | int | |
1654 | usb_stor_sddr09_init(struct us_data *us) { | |
1655 | return sddr09_common_init(us); | |
1656 | } |