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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 | ||
1da177e4 LT |
136 | static struct nand_flash_dev * |
137 | nand_find_id(unsigned char id) { | |
138 | int i; | |
139 | ||
52950ed4 | 140 | for (i = 0; i < ARRAY_SIZE(nand_flash_ids); i++) |
1da177e4 LT |
141 | if (nand_flash_ids[i].model_id == id) |
142 | return &(nand_flash_ids[i]); | |
143 | return NULL; | |
144 | } | |
145 | ||
146 | /* | |
147 | * ECC computation. | |
148 | */ | |
149 | static unsigned char parity[256]; | |
150 | static unsigned char ecc2[256]; | |
151 | ||
152 | static void nand_init_ecc(void) { | |
153 | int i, j, a; | |
154 | ||
155 | parity[0] = 0; | |
156 | for (i = 1; i < 256; i++) | |
157 | parity[i] = (parity[i&(i-1)] ^ 1); | |
158 | ||
159 | for (i = 0; i < 256; i++) { | |
160 | a = 0; | |
161 | for (j = 0; j < 8; j++) { | |
162 | if (i & (1<<j)) { | |
163 | if ((j & 1) == 0) | |
164 | a ^= 0x04; | |
165 | if ((j & 2) == 0) | |
166 | a ^= 0x10; | |
167 | if ((j & 4) == 0) | |
168 | a ^= 0x40; | |
169 | } | |
170 | } | |
171 | ecc2[i] = ~(a ^ (a<<1) ^ (parity[i] ? 0xa8 : 0)); | |
172 | } | |
173 | } | |
174 | ||
175 | /* compute 3-byte ecc on 256 bytes */ | |
176 | static void nand_compute_ecc(unsigned char *data, unsigned char *ecc) { | |
177 | int i, j, a; | |
178 | unsigned char par, bit, bits[8]; | |
179 | ||
180 | par = 0; | |
181 | for (j = 0; j < 8; j++) | |
182 | bits[j] = 0; | |
183 | ||
184 | /* collect 16 checksum bits */ | |
185 | for (i = 0; i < 256; i++) { | |
186 | par ^= data[i]; | |
187 | bit = parity[data[i]]; | |
188 | for (j = 0; j < 8; j++) | |
189 | if ((i & (1<<j)) == 0) | |
190 | bits[j] ^= bit; | |
191 | } | |
192 | ||
193 | /* put 4+4+4 = 12 bits in the ecc */ | |
194 | a = (bits[3] << 6) + (bits[2] << 4) + (bits[1] << 2) + bits[0]; | |
195 | ecc[0] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0)); | |
196 | ||
197 | a = (bits[7] << 6) + (bits[6] << 4) + (bits[5] << 2) + bits[4]; | |
198 | ecc[1] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0)); | |
199 | ||
200 | ecc[2] = ecc2[par]; | |
201 | } | |
202 | ||
203 | static int nand_compare_ecc(unsigned char *data, unsigned char *ecc) { | |
204 | return (data[0] == ecc[0] && data[1] == ecc[1] && data[2] == ecc[2]); | |
205 | } | |
206 | ||
207 | static void nand_store_ecc(unsigned char *data, unsigned char *ecc) { | |
208 | memcpy(data, ecc, 3); | |
209 | } | |
210 | ||
211 | /* | |
212 | * The actual driver starts here. | |
213 | */ | |
214 | ||
f5b8cb9c MD |
215 | struct sddr09_card_info { |
216 | unsigned long capacity; /* Size of card in bytes */ | |
217 | int pagesize; /* Size of page in bytes */ | |
218 | int pageshift; /* log2 of pagesize */ | |
219 | int blocksize; /* Size of block in pages */ | |
220 | int blockshift; /* log2 of blocksize */ | |
221 | int blockmask; /* 2^blockshift - 1 */ | |
222 | int *lba_to_pba; /* logical to physical map */ | |
223 | int *pba_to_lba; /* physical to logical map */ | |
224 | int lbact; /* number of available pages */ | |
225 | int flags; | |
226 | #define SDDR09_WP 1 /* write protected */ | |
227 | }; | |
228 | ||
1da177e4 LT |
229 | /* |
230 | * On my 16MB card, control blocks have size 64 (16 real control bytes, | |
231 | * and 48 junk bytes). In reality of course the card uses 16 control bytes, | |
232 | * so the reader makes up the remaining 48. Don't know whether these numbers | |
233 | * depend on the card. For now a constant. | |
234 | */ | |
235 | #define CONTROL_SHIFT 6 | |
236 | ||
237 | /* | |
238 | * On my Combo CF/SM reader, the SM reader has LUN 1. | |
239 | * (and things fail with LUN 0). | |
240 | * It seems LUN is irrelevant for others. | |
241 | */ | |
242 | #define LUN 1 | |
243 | #define LUNBITS (LUN << 5) | |
244 | ||
245 | /* | |
246 | * LBA and PBA are unsigned ints. Special values. | |
247 | */ | |
248 | #define UNDEF 0xffffffff | |
249 | #define SPARE 0xfffffffe | |
250 | #define UNUSABLE 0xfffffffd | |
251 | ||
4c4c9432 | 252 | static const int erase_bad_lba_entries = 0; |
1da177e4 LT |
253 | |
254 | /* send vendor interface command (0x41) */ | |
255 | /* called for requests 0, 1, 8 */ | |
256 | static int | |
257 | sddr09_send_command(struct us_data *us, | |
258 | unsigned char request, | |
259 | unsigned char direction, | |
260 | unsigned char *xfer_data, | |
261 | unsigned int xfer_len) { | |
262 | unsigned int pipe; | |
263 | unsigned char requesttype = (0x41 | direction); | |
264 | int rc; | |
265 | ||
266 | // Get the receive or send control pipe number | |
267 | ||
268 | if (direction == USB_DIR_IN) | |
269 | pipe = us->recv_ctrl_pipe; | |
270 | else | |
271 | pipe = us->send_ctrl_pipe; | |
272 | ||
273 | rc = usb_stor_ctrl_transfer(us, pipe, request, requesttype, | |
274 | 0, 0, xfer_data, xfer_len); | |
0dc08a35 MD |
275 | switch (rc) { |
276 | case USB_STOR_XFER_GOOD: return 0; | |
277 | case USB_STOR_XFER_STALLED: return -EPIPE; | |
278 | default: return -EIO; | |
279 | } | |
1da177e4 LT |
280 | } |
281 | ||
282 | static int | |
283 | sddr09_send_scsi_command(struct us_data *us, | |
284 | unsigned char *command, | |
285 | unsigned int command_len) { | |
286 | return sddr09_send_command(us, 0, USB_DIR_OUT, command, command_len); | |
287 | } | |
288 | ||
289 | #if 0 | |
290 | /* | |
291 | * Test Unit Ready Command: 12 bytes. | |
292 | * byte 0: opcode: 00 | |
293 | */ | |
294 | static int | |
295 | sddr09_test_unit_ready(struct us_data *us) { | |
296 | unsigned char *command = us->iobuf; | |
297 | int result; | |
298 | ||
299 | memset(command, 0, 6); | |
300 | command[1] = LUNBITS; | |
301 | ||
302 | result = sddr09_send_scsi_command(us, command, 6); | |
303 | ||
304 | US_DEBUGP("sddr09_test_unit_ready returns %d\n", result); | |
305 | ||
306 | return result; | |
307 | } | |
308 | #endif | |
309 | ||
310 | /* | |
311 | * Request Sense Command: 12 bytes. | |
312 | * byte 0: opcode: 03 | |
313 | * byte 4: data length | |
314 | */ | |
315 | static int | |
316 | sddr09_request_sense(struct us_data *us, unsigned char *sensebuf, int buflen) { | |
317 | unsigned char *command = us->iobuf; | |
318 | int result; | |
319 | ||
320 | memset(command, 0, 12); | |
321 | command[0] = 0x03; | |
322 | command[1] = LUNBITS; | |
323 | command[4] = buflen; | |
324 | ||
325 | result = sddr09_send_scsi_command(us, command, 12); | |
0dc08a35 | 326 | if (result) |
1da177e4 | 327 | return result; |
1da177e4 LT |
328 | |
329 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, | |
330 | sensebuf, buflen, NULL); | |
0dc08a35 | 331 | return (result == USB_STOR_XFER_GOOD ? 0 : -EIO); |
1da177e4 LT |
332 | } |
333 | ||
334 | /* | |
335 | * Read Command: 12 bytes. | |
336 | * byte 0: opcode: E8 | |
337 | * byte 1: last two bits: 00: read data, 01: read blockwise control, | |
338 | * 10: read both, 11: read pagewise control. | |
339 | * It turns out we need values 20, 21, 22, 23 here (LUN 1). | |
340 | * bytes 2-5: address (interpretation depends on byte 1, see below) | |
341 | * bytes 10-11: count (idem) | |
342 | * | |
343 | * A page has 512 data bytes and 64 control bytes (16 control and 48 junk). | |
344 | * A read data command gets data in 512-byte pages. | |
345 | * A read control command gets control in 64-byte chunks. | |
346 | * A read both command gets data+control in 576-byte chunks. | |
347 | * | |
348 | * Blocks are groups of 32 pages, and read blockwise control jumps to the | |
349 | * next block, while read pagewise control jumps to the next page after | |
350 | * reading a group of 64 control bytes. | |
351 | * [Here 512 = 1<<pageshift, 32 = 1<<blockshift, 64 is constant?] | |
352 | * | |
353 | * (1 MB and 2 MB cards are a bit different, but I have only a 16 MB card.) | |
354 | */ | |
355 | ||
356 | static int | |
357 | sddr09_readX(struct us_data *us, int x, unsigned long fromaddress, | |
358 | int nr_of_pages, int bulklen, unsigned char *buf, | |
359 | int use_sg) { | |
360 | ||
361 | unsigned char *command = us->iobuf; | |
362 | int result; | |
363 | ||
364 | command[0] = 0xE8; | |
365 | command[1] = LUNBITS | x; | |
366 | command[2] = MSB_of(fromaddress>>16); | |
367 | command[3] = LSB_of(fromaddress>>16); | |
368 | command[4] = MSB_of(fromaddress & 0xFFFF); | |
369 | command[5] = LSB_of(fromaddress & 0xFFFF); | |
370 | command[6] = 0; | |
371 | command[7] = 0; | |
372 | command[8] = 0; | |
373 | command[9] = 0; | |
374 | command[10] = MSB_of(nr_of_pages); | |
375 | command[11] = LSB_of(nr_of_pages); | |
376 | ||
377 | result = sddr09_send_scsi_command(us, command, 12); | |
378 | ||
0dc08a35 | 379 | if (result) { |
1da177e4 LT |
380 | US_DEBUGP("Result for send_control in sddr09_read2%d %d\n", |
381 | x, result); | |
382 | return result; | |
383 | } | |
384 | ||
385 | result = usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe, | |
386 | buf, bulklen, use_sg, NULL); | |
387 | ||
388 | if (result != USB_STOR_XFER_GOOD) { | |
389 | US_DEBUGP("Result for bulk_transfer in sddr09_read2%d %d\n", | |
390 | x, result); | |
0dc08a35 | 391 | return -EIO; |
1da177e4 | 392 | } |
0dc08a35 | 393 | return 0; |
1da177e4 LT |
394 | } |
395 | ||
396 | /* | |
397 | * Read Data | |
398 | * | |
399 | * fromaddress counts data shorts: | |
400 | * increasing it by 256 shifts the bytestream by 512 bytes; | |
401 | * the last 8 bits are ignored. | |
402 | * | |
403 | * nr_of_pages counts pages of size (1 << pageshift). | |
404 | */ | |
405 | static int | |
406 | sddr09_read20(struct us_data *us, unsigned long fromaddress, | |
407 | int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) { | |
408 | int bulklen = nr_of_pages << pageshift; | |
409 | ||
410 | /* The last 8 bits of fromaddress are ignored. */ | |
411 | return sddr09_readX(us, 0, fromaddress, nr_of_pages, bulklen, | |
412 | buf, use_sg); | |
413 | } | |
414 | ||
415 | /* | |
416 | * Read Blockwise Control | |
417 | * | |
418 | * fromaddress gives the starting position (as in read data; | |
419 | * the last 8 bits are ignored); increasing it by 32*256 shifts | |
420 | * the output stream by 64 bytes. | |
421 | * | |
422 | * count counts control groups of size (1 << controlshift). | |
423 | * For me, controlshift = 6. Is this constant? | |
424 | * | |
425 | * After getting one control group, jump to the next block | |
426 | * (fromaddress += 8192). | |
427 | */ | |
428 | static int | |
429 | sddr09_read21(struct us_data *us, unsigned long fromaddress, | |
430 | int count, int controlshift, unsigned char *buf, int use_sg) { | |
431 | ||
432 | int bulklen = (count << controlshift); | |
433 | return sddr09_readX(us, 1, fromaddress, count, bulklen, | |
434 | buf, use_sg); | |
435 | } | |
436 | ||
437 | /* | |
438 | * Read both Data and Control | |
439 | * | |
440 | * fromaddress counts data shorts, ignoring control: | |
441 | * increasing it by 256 shifts the bytestream by 576 = 512+64 bytes; | |
442 | * the last 8 bits are ignored. | |
443 | * | |
444 | * nr_of_pages counts pages of size (1 << pageshift) + (1 << controlshift). | |
445 | */ | |
446 | static int | |
447 | sddr09_read22(struct us_data *us, unsigned long fromaddress, | |
448 | int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) { | |
449 | ||
450 | int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT); | |
451 | US_DEBUGP("sddr09_read22: reading %d pages, %d bytes\n", | |
452 | nr_of_pages, bulklen); | |
453 | return sddr09_readX(us, 2, fromaddress, nr_of_pages, bulklen, | |
454 | buf, use_sg); | |
455 | } | |
456 | ||
457 | #if 0 | |
458 | /* | |
459 | * Read Pagewise Control | |
460 | * | |
461 | * fromaddress gives the starting position (as in read data; | |
462 | * the last 8 bits are ignored); increasing it by 256 shifts | |
463 | * the output stream by 64 bytes. | |
464 | * | |
465 | * count counts control groups of size (1 << controlshift). | |
466 | * For me, controlshift = 6. Is this constant? | |
467 | * | |
468 | * After getting one control group, jump to the next page | |
469 | * (fromaddress += 256). | |
470 | */ | |
471 | static int | |
472 | sddr09_read23(struct us_data *us, unsigned long fromaddress, | |
473 | int count, int controlshift, unsigned char *buf, int use_sg) { | |
474 | ||
475 | int bulklen = (count << controlshift); | |
476 | return sddr09_readX(us, 3, fromaddress, count, bulklen, | |
477 | buf, use_sg); | |
478 | } | |
479 | #endif | |
480 | ||
481 | /* | |
482 | * Erase Command: 12 bytes. | |
483 | * byte 0: opcode: EA | |
484 | * bytes 6-9: erase address (big-endian, counting shorts, sector aligned). | |
485 | * | |
486 | * Always precisely one block is erased; bytes 2-5 and 10-11 are ignored. | |
487 | * The byte address being erased is 2*Eaddress. | |
488 | * The CIS cannot be erased. | |
489 | */ | |
490 | static int | |
491 | sddr09_erase(struct us_data *us, unsigned long Eaddress) { | |
492 | unsigned char *command = us->iobuf; | |
493 | int result; | |
494 | ||
495 | US_DEBUGP("sddr09_erase: erase address %lu\n", Eaddress); | |
496 | ||
497 | memset(command, 0, 12); | |
498 | command[0] = 0xEA; | |
499 | command[1] = LUNBITS; | |
500 | command[6] = MSB_of(Eaddress>>16); | |
501 | command[7] = LSB_of(Eaddress>>16); | |
502 | command[8] = MSB_of(Eaddress & 0xFFFF); | |
503 | command[9] = LSB_of(Eaddress & 0xFFFF); | |
504 | ||
505 | result = sddr09_send_scsi_command(us, command, 12); | |
506 | ||
0dc08a35 | 507 | if (result) |
1da177e4 LT |
508 | US_DEBUGP("Result for send_control in sddr09_erase %d\n", |
509 | result); | |
510 | ||
511 | return result; | |
512 | } | |
513 | ||
514 | /* | |
515 | * Write CIS Command: 12 bytes. | |
516 | * byte 0: opcode: EE | |
517 | * bytes 2-5: write address in shorts | |
518 | * bytes 10-11: sector count | |
519 | * | |
520 | * This writes at the indicated address. Don't know how it differs | |
521 | * from E9. Maybe it does not erase? However, it will also write to | |
522 | * the CIS. | |
523 | * | |
524 | * When two such commands on the same page follow each other directly, | |
525 | * the second one is not done. | |
526 | */ | |
527 | ||
528 | /* | |
529 | * Write Command: 12 bytes. | |
530 | * byte 0: opcode: E9 | |
531 | * bytes 2-5: write address (big-endian, counting shorts, sector aligned). | |
532 | * bytes 6-9: erase address (big-endian, counting shorts, sector aligned). | |
533 | * bytes 10-11: sector count (big-endian, in 512-byte sectors). | |
534 | * | |
535 | * If write address equals erase address, the erase is done first, | |
536 | * otherwise the write is done first. When erase address equals zero | |
537 | * no erase is done? | |
538 | */ | |
539 | static int | |
540 | sddr09_writeX(struct us_data *us, | |
541 | unsigned long Waddress, unsigned long Eaddress, | |
542 | int nr_of_pages, int bulklen, unsigned char *buf, int use_sg) { | |
543 | ||
544 | unsigned char *command = us->iobuf; | |
545 | int result; | |
546 | ||
547 | command[0] = 0xE9; | |
548 | command[1] = LUNBITS; | |
549 | ||
550 | command[2] = MSB_of(Waddress>>16); | |
551 | command[3] = LSB_of(Waddress>>16); | |
552 | command[4] = MSB_of(Waddress & 0xFFFF); | |
553 | command[5] = LSB_of(Waddress & 0xFFFF); | |
554 | ||
555 | command[6] = MSB_of(Eaddress>>16); | |
556 | command[7] = LSB_of(Eaddress>>16); | |
557 | command[8] = MSB_of(Eaddress & 0xFFFF); | |
558 | command[9] = LSB_of(Eaddress & 0xFFFF); | |
559 | ||
560 | command[10] = MSB_of(nr_of_pages); | |
561 | command[11] = LSB_of(nr_of_pages); | |
562 | ||
563 | result = sddr09_send_scsi_command(us, command, 12); | |
564 | ||
0dc08a35 | 565 | if (result) { |
1da177e4 LT |
566 | US_DEBUGP("Result for send_control in sddr09_writeX %d\n", |
567 | result); | |
568 | return result; | |
569 | } | |
570 | ||
571 | result = usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe, | |
572 | buf, bulklen, use_sg, NULL); | |
573 | ||
574 | if (result != USB_STOR_XFER_GOOD) { | |
575 | US_DEBUGP("Result for bulk_transfer in sddr09_writeX %d\n", | |
576 | result); | |
0dc08a35 | 577 | return -EIO; |
1da177e4 | 578 | } |
0dc08a35 | 579 | return 0; |
1da177e4 LT |
580 | } |
581 | ||
582 | /* erase address, write same address */ | |
583 | static int | |
584 | sddr09_write_inplace(struct us_data *us, unsigned long address, | |
585 | int nr_of_pages, int pageshift, unsigned char *buf, | |
586 | int use_sg) { | |
587 | int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT); | |
588 | return sddr09_writeX(us, address, address, nr_of_pages, bulklen, | |
589 | buf, use_sg); | |
590 | } | |
591 | ||
592 | #if 0 | |
593 | /* | |
594 | * Read Scatter Gather Command: 3+4n bytes. | |
595 | * byte 0: opcode E7 | |
596 | * byte 2: n | |
597 | * bytes 4i-1,4i,4i+1: page address | |
598 | * byte 4i+2: page count | |
599 | * (i=1..n) | |
600 | * | |
601 | * This reads several pages from the card to a single memory buffer. | |
602 | * The last two bits of byte 1 have the same meaning as for E8. | |
603 | */ | |
604 | static int | |
605 | sddr09_read_sg_test_only(struct us_data *us) { | |
606 | unsigned char *command = us->iobuf; | |
607 | int result, bulklen, nsg, ct; | |
608 | unsigned char *buf; | |
609 | unsigned long address; | |
610 | ||
611 | nsg = bulklen = 0; | |
612 | command[0] = 0xE7; | |
613 | command[1] = LUNBITS; | |
614 | command[2] = 0; | |
615 | address = 040000; ct = 1; | |
616 | nsg++; | |
617 | bulklen += (ct << 9); | |
618 | command[4*nsg+2] = ct; | |
619 | command[4*nsg+1] = ((address >> 9) & 0xFF); | |
620 | command[4*nsg+0] = ((address >> 17) & 0xFF); | |
621 | command[4*nsg-1] = ((address >> 25) & 0xFF); | |
622 | ||
623 | address = 0340000; ct = 1; | |
624 | nsg++; | |
625 | bulklen += (ct << 9); | |
626 | command[4*nsg+2] = ct; | |
627 | command[4*nsg+1] = ((address >> 9) & 0xFF); | |
628 | command[4*nsg+0] = ((address >> 17) & 0xFF); | |
629 | command[4*nsg-1] = ((address >> 25) & 0xFF); | |
630 | ||
631 | address = 01000000; ct = 2; | |
632 | nsg++; | |
633 | bulklen += (ct << 9); | |
634 | command[4*nsg+2] = ct; | |
635 | command[4*nsg+1] = ((address >> 9) & 0xFF); | |
636 | command[4*nsg+0] = ((address >> 17) & 0xFF); | |
637 | command[4*nsg-1] = ((address >> 25) & 0xFF); | |
638 | ||
639 | command[2] = nsg; | |
640 | ||
641 | result = sddr09_send_scsi_command(us, command, 4*nsg+3); | |
642 | ||
0dc08a35 | 643 | if (result) { |
1da177e4 LT |
644 | US_DEBUGP("Result for send_control in sddr09_read_sg %d\n", |
645 | result); | |
646 | return result; | |
647 | } | |
648 | ||
5cbded58 | 649 | buf = kmalloc(bulklen, GFP_NOIO); |
1da177e4 | 650 | if (!buf) |
0dc08a35 | 651 | return -ENOMEM; |
1da177e4 LT |
652 | |
653 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, | |
654 | buf, bulklen, NULL); | |
655 | kfree(buf); | |
656 | if (result != USB_STOR_XFER_GOOD) { | |
657 | US_DEBUGP("Result for bulk_transfer in sddr09_read_sg %d\n", | |
658 | result); | |
0dc08a35 | 659 | return -EIO; |
1da177e4 LT |
660 | } |
661 | ||
0dc08a35 | 662 | return 0; |
1da177e4 LT |
663 | } |
664 | #endif | |
665 | ||
666 | /* | |
667 | * Read Status Command: 12 bytes. | |
668 | * byte 0: opcode: EC | |
669 | * | |
670 | * Returns 64 bytes, all zero except for the first. | |
671 | * bit 0: 1: Error | |
672 | * bit 5: 1: Suspended | |
673 | * bit 6: 1: Ready | |
674 | * bit 7: 1: Not write-protected | |
675 | */ | |
676 | ||
677 | static int | |
678 | sddr09_read_status(struct us_data *us, unsigned char *status) { | |
679 | ||
680 | unsigned char *command = us->iobuf; | |
681 | unsigned char *data = us->iobuf; | |
682 | int result; | |
683 | ||
684 | US_DEBUGP("Reading status...\n"); | |
685 | ||
686 | memset(command, 0, 12); | |
687 | command[0] = 0xEC; | |
688 | command[1] = LUNBITS; | |
689 | ||
690 | result = sddr09_send_scsi_command(us, command, 12); | |
0dc08a35 | 691 | if (result) |
1da177e4 LT |
692 | return result; |
693 | ||
694 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, | |
695 | data, 64, NULL); | |
696 | *status = data[0]; | |
0dc08a35 | 697 | return (result == USB_STOR_XFER_GOOD ? 0 : -EIO); |
1da177e4 LT |
698 | } |
699 | ||
700 | static int | |
701 | sddr09_read_data(struct us_data *us, | |
702 | unsigned long address, | |
703 | unsigned int sectors) { | |
704 | ||
705 | struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra; | |
706 | unsigned char *buffer; | |
707 | unsigned int lba, maxlba, pba; | |
708 | unsigned int page, pages; | |
709 | unsigned int len, index, offset; | |
710 | int result; | |
711 | ||
a6c976c6 MD |
712 | // Figure out the initial LBA and page |
713 | lba = address >> info->blockshift; | |
714 | page = (address & info->blockmask); | |
715 | maxlba = info->capacity >> (info->pageshift + info->blockshift); | |
716 | if (lba >= maxlba) | |
717 | return -EIO; | |
718 | ||
1da177e4 LT |
719 | // Since we only read in one block at a time, we have to create |
720 | // a bounce buffer and move the data a piece at a time between the | |
721 | // bounce buffer and the actual transfer buffer. | |
722 | ||
723 | len = min(sectors, (unsigned int) info->blocksize) * info->pagesize; | |
724 | buffer = kmalloc(len, GFP_NOIO); | |
725 | if (buffer == NULL) { | |
726 | printk("sddr09_read_data: Out of memory\n"); | |
0dc08a35 | 727 | return -ENOMEM; |
1da177e4 LT |
728 | } |
729 | ||
1da177e4 LT |
730 | // This could be made much more efficient by checking for |
731 | // contiguous LBA's. Another exercise left to the student. | |
732 | ||
0dc08a35 | 733 | result = 0; |
1da177e4 LT |
734 | index = offset = 0; |
735 | ||
736 | while (sectors > 0) { | |
737 | ||
738 | /* Find number of pages we can read in this block */ | |
739 | pages = min(sectors, info->blocksize - page); | |
740 | len = pages << info->pageshift; | |
741 | ||
742 | /* Not overflowing capacity? */ | |
743 | if (lba >= maxlba) { | |
744 | US_DEBUGP("Error: Requested lba %u exceeds " | |
745 | "maximum %u\n", lba, maxlba); | |
0dc08a35 | 746 | result = -EIO; |
1da177e4 LT |
747 | break; |
748 | } | |
749 | ||
750 | /* Find where this lba lives on disk */ | |
751 | pba = info->lba_to_pba[lba]; | |
752 | ||
753 | if (pba == UNDEF) { /* this lba was never written */ | |
754 | ||
755 | US_DEBUGP("Read %d zero pages (LBA %d) page %d\n", | |
756 | pages, lba, page); | |
757 | ||
758 | /* This is not really an error. It just means | |
759 | that the block has never been written. | |
0dc08a35 | 760 | Instead of returning an error |
1da177e4 LT |
761 | it is better to return all zero data. */ |
762 | ||
763 | memset(buffer, 0, len); | |
764 | ||
765 | } else { | |
766 | US_DEBUGP("Read %d pages, from PBA %d" | |
767 | " (LBA %d) page %d\n", | |
768 | pages, pba, lba, page); | |
769 | ||
770 | address = ((pba << info->blockshift) + page) << | |
771 | info->pageshift; | |
772 | ||
773 | result = sddr09_read20(us, address>>1, | |
774 | pages, info->pageshift, buffer, 0); | |
0dc08a35 | 775 | if (result) |
1da177e4 LT |
776 | break; |
777 | } | |
778 | ||
779 | // Store the data in the transfer buffer | |
780 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
781 | &index, &offset, TO_XFER_BUF); | |
782 | ||
783 | page = 0; | |
784 | lba++; | |
785 | sectors -= pages; | |
786 | } | |
787 | ||
788 | kfree(buffer); | |
789 | return result; | |
790 | } | |
791 | ||
792 | static unsigned int | |
793 | sddr09_find_unused_pba(struct sddr09_card_info *info, unsigned int lba) { | |
794 | static unsigned int lastpba = 1; | |
795 | int zonestart, end, i; | |
796 | ||
797 | zonestart = (lba/1000) << 10; | |
798 | end = info->capacity >> (info->blockshift + info->pageshift); | |
799 | end -= zonestart; | |
800 | if (end > 1024) | |
801 | end = 1024; | |
802 | ||
803 | for (i = lastpba+1; i < end; i++) { | |
804 | if (info->pba_to_lba[zonestart+i] == UNDEF) { | |
805 | lastpba = i; | |
806 | return zonestart+i; | |
807 | } | |
808 | } | |
809 | for (i = 0; i <= lastpba; i++) { | |
810 | if (info->pba_to_lba[zonestart+i] == UNDEF) { | |
811 | lastpba = i; | |
812 | return zonestart+i; | |
813 | } | |
814 | } | |
815 | return 0; | |
816 | } | |
817 | ||
818 | static int | |
819 | sddr09_write_lba(struct us_data *us, unsigned int lba, | |
820 | unsigned int page, unsigned int pages, | |
821 | unsigned char *ptr, unsigned char *blockbuffer) { | |
822 | ||
823 | struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra; | |
824 | unsigned long address; | |
825 | unsigned int pba, lbap; | |
826 | unsigned int pagelen; | |
827 | unsigned char *bptr, *cptr, *xptr; | |
828 | unsigned char ecc[3]; | |
829 | int i, result, isnew; | |
830 | ||
831 | lbap = ((lba % 1000) << 1) | 0x1000; | |
832 | if (parity[MSB_of(lbap) ^ LSB_of(lbap)]) | |
833 | lbap ^= 1; | |
834 | pba = info->lba_to_pba[lba]; | |
835 | isnew = 0; | |
836 | ||
837 | if (pba == UNDEF) { | |
838 | pba = sddr09_find_unused_pba(info, lba); | |
839 | if (!pba) { | |
840 | printk("sddr09_write_lba: Out of unused blocks\n"); | |
0dc08a35 | 841 | return -ENOSPC; |
1da177e4 LT |
842 | } |
843 | info->pba_to_lba[pba] = lba; | |
844 | info->lba_to_pba[lba] = pba; | |
845 | isnew = 1; | |
846 | } | |
847 | ||
848 | if (pba == 1) { | |
849 | /* Maybe it is impossible to write to PBA 1. | |
850 | Fake success, but don't do anything. */ | |
851 | printk("sddr09: avoid writing to pba 1\n"); | |
0dc08a35 | 852 | return 0; |
1da177e4 LT |
853 | } |
854 | ||
855 | pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT); | |
856 | ||
857 | /* read old contents */ | |
858 | address = (pba << (info->pageshift + info->blockshift)); | |
859 | result = sddr09_read22(us, address>>1, info->blocksize, | |
860 | info->pageshift, blockbuffer, 0); | |
0dc08a35 | 861 | if (result) |
1da177e4 LT |
862 | return result; |
863 | ||
864 | /* check old contents and fill lba */ | |
865 | for (i = 0; i < info->blocksize; i++) { | |
866 | bptr = blockbuffer + i*pagelen; | |
867 | cptr = bptr + info->pagesize; | |
868 | nand_compute_ecc(bptr, ecc); | |
869 | if (!nand_compare_ecc(cptr+13, ecc)) { | |
870 | US_DEBUGP("Warning: bad ecc in page %d- of pba %d\n", | |
871 | i, pba); | |
872 | nand_store_ecc(cptr+13, ecc); | |
873 | } | |
874 | nand_compute_ecc(bptr+(info->pagesize / 2), ecc); | |
875 | if (!nand_compare_ecc(cptr+8, ecc)) { | |
876 | US_DEBUGP("Warning: bad ecc in page %d+ of pba %d\n", | |
877 | i, pba); | |
878 | nand_store_ecc(cptr+8, ecc); | |
879 | } | |
880 | cptr[6] = cptr[11] = MSB_of(lbap); | |
881 | cptr[7] = cptr[12] = LSB_of(lbap); | |
882 | } | |
883 | ||
884 | /* copy in new stuff and compute ECC */ | |
885 | xptr = ptr; | |
886 | for (i = page; i < page+pages; i++) { | |
887 | bptr = blockbuffer + i*pagelen; | |
888 | cptr = bptr + info->pagesize; | |
889 | memcpy(bptr, xptr, info->pagesize); | |
890 | xptr += info->pagesize; | |
891 | nand_compute_ecc(bptr, ecc); | |
892 | nand_store_ecc(cptr+13, ecc); | |
893 | nand_compute_ecc(bptr+(info->pagesize / 2), ecc); | |
894 | nand_store_ecc(cptr+8, ecc); | |
895 | } | |
896 | ||
897 | US_DEBUGP("Rewrite PBA %d (LBA %d)\n", pba, lba); | |
898 | ||
899 | result = sddr09_write_inplace(us, address>>1, info->blocksize, | |
900 | info->pageshift, blockbuffer, 0); | |
901 | ||
902 | US_DEBUGP("sddr09_write_inplace returns %d\n", result); | |
903 | ||
904 | #if 0 | |
905 | { | |
906 | unsigned char status = 0; | |
907 | int result2 = sddr09_read_status(us, &status); | |
0dc08a35 | 908 | if (result2) |
1da177e4 LT |
909 | US_DEBUGP("sddr09_write_inplace: cannot read status\n"); |
910 | else if (status != 0xc0) | |
911 | US_DEBUGP("sddr09_write_inplace: status after write: 0x%x\n", | |
912 | status); | |
913 | } | |
914 | #endif | |
915 | ||
916 | #if 0 | |
917 | { | |
918 | int result2 = sddr09_test_unit_ready(us); | |
919 | } | |
920 | #endif | |
921 | ||
922 | return result; | |
923 | } | |
924 | ||
925 | static int | |
926 | sddr09_write_data(struct us_data *us, | |
927 | unsigned long address, | |
928 | unsigned int sectors) { | |
929 | ||
930 | struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra; | |
a6c976c6 | 931 | unsigned int lba, maxlba, page, pages; |
1da177e4 LT |
932 | unsigned int pagelen, blocklen; |
933 | unsigned char *blockbuffer; | |
934 | unsigned char *buffer; | |
935 | unsigned int len, index, offset; | |
936 | int result; | |
937 | ||
a6c976c6 MD |
938 | // Figure out the initial LBA and page |
939 | lba = address >> info->blockshift; | |
940 | page = (address & info->blockmask); | |
941 | maxlba = info->capacity >> (info->pageshift + info->blockshift); | |
942 | if (lba >= maxlba) | |
943 | return -EIO; | |
944 | ||
1da177e4 LT |
945 | // blockbuffer is used for reading in the old data, overwriting |
946 | // with the new data, and performing ECC calculations | |
947 | ||
948 | /* TODO: instead of doing kmalloc/kfree for each write, | |
949 | add a bufferpointer to the info structure */ | |
950 | ||
951 | pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT); | |
952 | blocklen = (pagelen << info->blockshift); | |
953 | blockbuffer = kmalloc(blocklen, GFP_NOIO); | |
954 | if (!blockbuffer) { | |
955 | printk("sddr09_write_data: Out of memory\n"); | |
0dc08a35 | 956 | return -ENOMEM; |
1da177e4 LT |
957 | } |
958 | ||
959 | // Since we don't write the user data directly to the device, | |
960 | // we have to create a bounce buffer and move the data a piece | |
961 | // at a time between the bounce buffer and the actual transfer buffer. | |
962 | ||
963 | len = min(sectors, (unsigned int) info->blocksize) * info->pagesize; | |
964 | buffer = kmalloc(len, GFP_NOIO); | |
965 | if (buffer == NULL) { | |
966 | printk("sddr09_write_data: Out of memory\n"); | |
967 | kfree(blockbuffer); | |
0dc08a35 | 968 | return -ENOMEM; |
1da177e4 LT |
969 | } |
970 | ||
0dc08a35 | 971 | result = 0; |
1da177e4 LT |
972 | index = offset = 0; |
973 | ||
974 | while (sectors > 0) { | |
975 | ||
976 | // Write as many sectors as possible in this block | |
977 | ||
978 | pages = min(sectors, info->blocksize - page); | |
979 | len = (pages << info->pageshift); | |
980 | ||
a6c976c6 MD |
981 | /* Not overflowing capacity? */ |
982 | if (lba >= maxlba) { | |
983 | US_DEBUGP("Error: Requested lba %u exceeds " | |
984 | "maximum %u\n", lba, maxlba); | |
985 | result = -EIO; | |
986 | break; | |
987 | } | |
988 | ||
1da177e4 LT |
989 | // Get the data from the transfer buffer |
990 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
991 | &index, &offset, FROM_XFER_BUF); | |
992 | ||
993 | result = sddr09_write_lba(us, lba, page, pages, | |
994 | buffer, blockbuffer); | |
0dc08a35 | 995 | if (result) |
1da177e4 LT |
996 | break; |
997 | ||
998 | page = 0; | |
999 | lba++; | |
1000 | sectors -= pages; | |
1001 | } | |
1002 | ||
1003 | kfree(buffer); | |
1004 | kfree(blockbuffer); | |
1005 | ||
1006 | return result; | |
1007 | } | |
1008 | ||
1009 | static int | |
1010 | sddr09_read_control(struct us_data *us, | |
1011 | unsigned long address, | |
1012 | unsigned int blocks, | |
1013 | unsigned char *content, | |
1014 | int use_sg) { | |
1015 | ||
1016 | US_DEBUGP("Read control address %lu, blocks %d\n", | |
1017 | address, blocks); | |
1018 | ||
1019 | return sddr09_read21(us, address, blocks, | |
1020 | CONTROL_SHIFT, content, use_sg); | |
1021 | } | |
1022 | ||
1023 | /* | |
1024 | * Read Device ID Command: 12 bytes. | |
1025 | * byte 0: opcode: ED | |
1026 | * | |
1027 | * Returns 2 bytes: Manufacturer ID and Device ID. | |
1028 | * On more recent cards 3 bytes: the third byte is an option code A5 | |
1029 | * signifying that the secret command to read an 128-bit ID is available. | |
1030 | * On still more recent cards 4 bytes: the fourth byte C0 means that | |
1031 | * a second read ID cmd is available. | |
1032 | */ | |
1033 | static int | |
1034 | sddr09_read_deviceID(struct us_data *us, unsigned char *deviceID) { | |
1035 | unsigned char *command = us->iobuf; | |
1036 | unsigned char *content = us->iobuf; | |
1037 | int result, i; | |
1038 | ||
1039 | memset(command, 0, 12); | |
1040 | command[0] = 0xED; | |
1041 | command[1] = LUNBITS; | |
1042 | ||
1043 | result = sddr09_send_scsi_command(us, command, 12); | |
0dc08a35 | 1044 | if (result) |
1da177e4 LT |
1045 | return result; |
1046 | ||
1047 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, | |
1048 | content, 64, NULL); | |
1049 | ||
1050 | for (i = 0; i < 4; i++) | |
1051 | deviceID[i] = content[i]; | |
1052 | ||
0dc08a35 | 1053 | return (result == USB_STOR_XFER_GOOD ? 0 : -EIO); |
1da177e4 LT |
1054 | } |
1055 | ||
1056 | static int | |
1057 | sddr09_get_wp(struct us_data *us, struct sddr09_card_info *info) { | |
1058 | int result; | |
1059 | unsigned char status; | |
1060 | ||
1061 | result = sddr09_read_status(us, &status); | |
0dc08a35 | 1062 | if (result) { |
1da177e4 LT |
1063 | US_DEBUGP("sddr09_get_wp: read_status fails\n"); |
1064 | return result; | |
1065 | } | |
1066 | US_DEBUGP("sddr09_get_wp: status 0x%02X", status); | |
1067 | if ((status & 0x80) == 0) { | |
1068 | info->flags |= SDDR09_WP; /* write protected */ | |
1069 | US_DEBUGP(" WP"); | |
1070 | } | |
1071 | if (status & 0x40) | |
1072 | US_DEBUGP(" Ready"); | |
1073 | if (status & LUNBITS) | |
1074 | US_DEBUGP(" Suspended"); | |
1075 | if (status & 0x1) | |
1076 | US_DEBUGP(" Error"); | |
1077 | US_DEBUGP("\n"); | |
0dc08a35 | 1078 | return 0; |
1da177e4 LT |
1079 | } |
1080 | ||
1081 | #if 0 | |
1082 | /* | |
1083 | * Reset Command: 12 bytes. | |
1084 | * byte 0: opcode: EB | |
1085 | */ | |
1086 | static int | |
1087 | sddr09_reset(struct us_data *us) { | |
1088 | ||
1089 | unsigned char *command = us->iobuf; | |
1090 | ||
1091 | memset(command, 0, 12); | |
1092 | command[0] = 0xEB; | |
1093 | command[1] = LUNBITS; | |
1094 | ||
1095 | return sddr09_send_scsi_command(us, command, 12); | |
1096 | } | |
1097 | #endif | |
1098 | ||
1099 | static struct nand_flash_dev * | |
1100 | sddr09_get_cardinfo(struct us_data *us, unsigned char flags) { | |
1101 | struct nand_flash_dev *cardinfo; | |
1102 | unsigned char deviceID[4]; | |
1103 | char blurbtxt[256]; | |
1104 | int result; | |
1105 | ||
1106 | US_DEBUGP("Reading capacity...\n"); | |
1107 | ||
1108 | result = sddr09_read_deviceID(us, deviceID); | |
1109 | ||
0dc08a35 | 1110 | if (result) { |
1da177e4 LT |
1111 | US_DEBUGP("Result of read_deviceID is %d\n", result); |
1112 | printk("sddr09: could not read card info\n"); | |
1113 | return NULL; | |
1114 | } | |
1115 | ||
1116 | sprintf(blurbtxt, "sddr09: Found Flash card, ID = %02X %02X %02X %02X", | |
1117 | deviceID[0], deviceID[1], deviceID[2], deviceID[3]); | |
1118 | ||
1119 | /* Byte 0 is the manufacturer */ | |
1120 | sprintf(blurbtxt + strlen(blurbtxt), | |
1121 | ": Manuf. %s", | |
1122 | nand_flash_manufacturer(deviceID[0])); | |
1123 | ||
1124 | /* Byte 1 is the device type */ | |
1125 | cardinfo = nand_find_id(deviceID[1]); | |
1126 | if (cardinfo) { | |
1127 | /* MB or MiB? It is neither. A 16 MB card has | |
1128 | 17301504 raw bytes, of which 16384000 are | |
1129 | usable for user data. */ | |
1130 | sprintf(blurbtxt + strlen(blurbtxt), | |
1131 | ", %d MB", 1<<(cardinfo->chipshift - 20)); | |
1132 | } else { | |
1133 | sprintf(blurbtxt + strlen(blurbtxt), | |
1134 | ", type unrecognized"); | |
1135 | } | |
1136 | ||
1137 | /* Byte 2 is code to signal availability of 128-bit ID */ | |
1138 | if (deviceID[2] == 0xa5) { | |
1139 | sprintf(blurbtxt + strlen(blurbtxt), | |
1140 | ", 128-bit ID"); | |
1141 | } | |
1142 | ||
1143 | /* Byte 3 announces the availability of another read ID command */ | |
1144 | if (deviceID[3] == 0xc0) { | |
1145 | sprintf(blurbtxt + strlen(blurbtxt), | |
1146 | ", extra cmd"); | |
1147 | } | |
1148 | ||
1149 | if (flags & SDDR09_WP) | |
1150 | sprintf(blurbtxt + strlen(blurbtxt), | |
1151 | ", WP"); | |
1152 | ||
1153 | printk("%s\n", blurbtxt); | |
1154 | ||
1155 | return cardinfo; | |
1156 | } | |
1157 | ||
1158 | static int | |
1159 | sddr09_read_map(struct us_data *us) { | |
1160 | ||
1161 | struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra; | |
1162 | int numblocks, alloc_len, alloc_blocks; | |
1163 | int i, j, result; | |
1164 | unsigned char *buffer, *buffer_end, *ptr; | |
1165 | unsigned int lba, lbact; | |
1166 | ||
1167 | if (!info->capacity) | |
1168 | return -1; | |
1169 | ||
1170 | // size of a block is 1 << (blockshift + pageshift) bytes | |
1171 | // divide into the total capacity to get the number of blocks | |
1172 | ||
1173 | numblocks = info->capacity >> (info->blockshift + info->pageshift); | |
1174 | ||
1175 | // read 64 bytes for every block (actually 1 << CONTROL_SHIFT) | |
1176 | // but only use a 64 KB buffer | |
1177 | // buffer size used must be a multiple of (1 << CONTROL_SHIFT) | |
1178 | #define SDDR09_READ_MAP_BUFSZ 65536 | |
1179 | ||
1180 | alloc_blocks = min(numblocks, SDDR09_READ_MAP_BUFSZ >> CONTROL_SHIFT); | |
1181 | alloc_len = (alloc_blocks << CONTROL_SHIFT); | |
1182 | buffer = kmalloc(alloc_len, GFP_NOIO); | |
1183 | if (buffer == NULL) { | |
1184 | printk("sddr09_read_map: out of memory\n"); | |
1185 | result = -1; | |
1186 | goto done; | |
1187 | } | |
1188 | buffer_end = buffer + alloc_len; | |
1189 | ||
1190 | #undef SDDR09_READ_MAP_BUFSZ | |
1191 | ||
1192 | kfree(info->lba_to_pba); | |
1193 | kfree(info->pba_to_lba); | |
1194 | info->lba_to_pba = kmalloc(numblocks*sizeof(int), GFP_NOIO); | |
1195 | info->pba_to_lba = kmalloc(numblocks*sizeof(int), GFP_NOIO); | |
1196 | ||
1197 | if (info->lba_to_pba == NULL || info->pba_to_lba == NULL) { | |
1198 | printk("sddr09_read_map: out of memory\n"); | |
1199 | result = -1; | |
1200 | goto done; | |
1201 | } | |
1202 | ||
1203 | for (i = 0; i < numblocks; i++) | |
1204 | info->lba_to_pba[i] = info->pba_to_lba[i] = UNDEF; | |
1205 | ||
1206 | /* | |
1207 | * Define lba-pba translation table | |
1208 | */ | |
1209 | ||
1210 | ptr = buffer_end; | |
1211 | for (i = 0; i < numblocks; i++) { | |
1212 | ptr += (1 << CONTROL_SHIFT); | |
1213 | if (ptr >= buffer_end) { | |
1214 | unsigned long address; | |
1215 | ||
1216 | address = i << (info->pageshift + info->blockshift); | |
1217 | result = sddr09_read_control( | |
1218 | us, address>>1, | |
1219 | min(alloc_blocks, numblocks - i), | |
1220 | buffer, 0); | |
0dc08a35 | 1221 | if (result) { |
1da177e4 LT |
1222 | result = -1; |
1223 | goto done; | |
1224 | } | |
1225 | ptr = buffer; | |
1226 | } | |
1227 | ||
1228 | if (i == 0 || i == 1) { | |
1229 | info->pba_to_lba[i] = UNUSABLE; | |
1230 | continue; | |
1231 | } | |
1232 | ||
1233 | /* special PBAs have control field 0^16 */ | |
1234 | for (j = 0; j < 16; j++) | |
1235 | if (ptr[j] != 0) | |
1236 | goto nonz; | |
1237 | info->pba_to_lba[i] = UNUSABLE; | |
1238 | printk("sddr09: PBA %d has no logical mapping\n", i); | |
1239 | continue; | |
1240 | ||
1241 | nonz: | |
1242 | /* unwritten PBAs have control field FF^16 */ | |
1243 | for (j = 0; j < 16; j++) | |
1244 | if (ptr[j] != 0xff) | |
1245 | goto nonff; | |
1246 | continue; | |
1247 | ||
1248 | nonff: | |
1249 | /* normal PBAs start with six FFs */ | |
1250 | if (j < 6) { | |
1251 | printk("sddr09: PBA %d has no logical mapping: " | |
1252 | "reserved area = %02X%02X%02X%02X " | |
1253 | "data status %02X block status %02X\n", | |
1254 | i, ptr[0], ptr[1], ptr[2], ptr[3], | |
1255 | ptr[4], ptr[5]); | |
1256 | info->pba_to_lba[i] = UNUSABLE; | |
1257 | continue; | |
1258 | } | |
1259 | ||
1260 | if ((ptr[6] >> 4) != 0x01) { | |
1261 | printk("sddr09: PBA %d has invalid address field " | |
1262 | "%02X%02X/%02X%02X\n", | |
1263 | i, ptr[6], ptr[7], ptr[11], ptr[12]); | |
1264 | info->pba_to_lba[i] = UNUSABLE; | |
1265 | continue; | |
1266 | } | |
1267 | ||
1268 | /* check even parity */ | |
1269 | if (parity[ptr[6] ^ ptr[7]]) { | |
1270 | printk("sddr09: Bad parity in LBA for block %d" | |
1271 | " (%02X %02X)\n", i, ptr[6], ptr[7]); | |
1272 | info->pba_to_lba[i] = UNUSABLE; | |
1273 | continue; | |
1274 | } | |
1275 | ||
1276 | lba = short_pack(ptr[7], ptr[6]); | |
1277 | lba = (lba & 0x07FF) >> 1; | |
1278 | ||
1279 | /* | |
1280 | * Every 1024 physical blocks ("zone"), the LBA numbers | |
1281 | * go back to zero, but are within a higher block of LBA's. | |
1282 | * Also, there is a maximum of 1000 LBA's per zone. | |
1283 | * In other words, in PBA 1024-2047 you will find LBA 0-999 | |
1284 | * which are really LBA 1000-1999. This allows for 24 bad | |
1285 | * or special physical blocks per zone. | |
1286 | */ | |
1287 | ||
1288 | if (lba >= 1000) { | |
1289 | printk("sddr09: Bad low LBA %d for block %d\n", | |
1290 | lba, i); | |
1291 | goto possibly_erase; | |
1292 | } | |
1293 | ||
1294 | lba += 1000*(i/0x400); | |
1295 | ||
1296 | if (info->lba_to_pba[lba] != UNDEF) { | |
1297 | printk("sddr09: LBA %d seen for PBA %d and %d\n", | |
1298 | lba, info->lba_to_pba[lba], i); | |
1299 | goto possibly_erase; | |
1300 | } | |
1301 | ||
1302 | info->pba_to_lba[i] = lba; | |
1303 | info->lba_to_pba[lba] = i; | |
1304 | continue; | |
1305 | ||
1306 | possibly_erase: | |
1307 | if (erase_bad_lba_entries) { | |
1308 | unsigned long address; | |
1309 | ||
1310 | address = (i << (info->pageshift + info->blockshift)); | |
1311 | sddr09_erase(us, address>>1); | |
1312 | info->pba_to_lba[i] = UNDEF; | |
1313 | } else | |
1314 | info->pba_to_lba[i] = UNUSABLE; | |
1315 | } | |
1316 | ||
1317 | /* | |
1318 | * Approximate capacity. This is not entirely correct yet, | |
1319 | * since a zone with less than 1000 usable pages leads to | |
1320 | * missing LBAs. Especially if it is the last zone, some | |
1321 | * LBAs can be past capacity. | |
1322 | */ | |
1323 | lbact = 0; | |
1324 | for (i = 0; i < numblocks; i += 1024) { | |
1325 | int ct = 0; | |
1326 | ||
1327 | for (j = 0; j < 1024 && i+j < numblocks; j++) { | |
1328 | if (info->pba_to_lba[i+j] != UNUSABLE) { | |
1329 | if (ct >= 1000) | |
1330 | info->pba_to_lba[i+j] = SPARE; | |
1331 | else | |
1332 | ct++; | |
1333 | } | |
1334 | } | |
1335 | lbact += ct; | |
1336 | } | |
1337 | info->lbact = lbact; | |
1338 | US_DEBUGP("Found %d LBA's\n", lbact); | |
1339 | result = 0; | |
1340 | ||
1341 | done: | |
1342 | if (result != 0) { | |
1343 | kfree(info->lba_to_pba); | |
1344 | kfree(info->pba_to_lba); | |
1345 | info->lba_to_pba = NULL; | |
1346 | info->pba_to_lba = NULL; | |
1347 | } | |
1348 | kfree(buffer); | |
1349 | return result; | |
1350 | } | |
1351 | ||
1352 | static void | |
1353 | sddr09_card_info_destructor(void *extra) { | |
1354 | struct sddr09_card_info *info = (struct sddr09_card_info *)extra; | |
1355 | ||
1356 | if (!info) | |
1357 | return; | |
1358 | ||
1359 | kfree(info->lba_to_pba); | |
1360 | kfree(info->pba_to_lba); | |
1361 | } | |
1362 | ||
f5b8cb9c MD |
1363 | static int |
1364 | sddr09_common_init(struct us_data *us) { | |
1365 | int result; | |
1366 | ||
1367 | /* set the configuration -- STALL is an acceptable response here */ | |
1368 | if (us->pusb_dev->actconfig->desc.bConfigurationValue != 1) { | |
1369 | US_DEBUGP("active config #%d != 1 ??\n", us->pusb_dev | |
1370 | ->actconfig->desc.bConfigurationValue); | |
1371 | return -EINVAL; | |
1372 | } | |
1373 | ||
1374 | result = usb_reset_configuration(us->pusb_dev); | |
1375 | US_DEBUGP("Result of usb_reset_configuration is %d\n", result); | |
1376 | if (result == -EPIPE) { | |
1377 | US_DEBUGP("-- stall on control interface\n"); | |
1378 | } else if (result != 0) { | |
1379 | /* it's not a stall, but another error -- time to bail */ | |
1380 | US_DEBUGP("-- Unknown error. Rejecting device\n"); | |
1381 | return -EINVAL; | |
1da177e4 | 1382 | } |
f5b8cb9c MD |
1383 | |
1384 | us->extra = kzalloc(sizeof(struct sddr09_card_info), GFP_NOIO); | |
1385 | if (!us->extra) | |
1386 | return -ENOMEM; | |
1387 | us->extra_destructor = sddr09_card_info_destructor; | |
1388 | ||
1389 | nand_init_ecc(); | |
1390 | return 0; | |
1da177e4 LT |
1391 | } |
1392 | ||
f5b8cb9c | 1393 | |
1da177e4 LT |
1394 | /* |
1395 | * This is needed at a very early stage. If this is not listed in the | |
1396 | * unusual devices list but called from here then LUN 0 of the combo reader | |
1397 | * is not recognized. But I do not know what precisely these calls do. | |
1398 | */ | |
1399 | int | |
f5b8cb9c | 1400 | usb_stor_sddr09_dpcm_init(struct us_data *us) { |
1da177e4 LT |
1401 | int result; |
1402 | unsigned char *data = us->iobuf; | |
1403 | ||
f5b8cb9c MD |
1404 | result = sddr09_common_init(us); |
1405 | if (result) | |
1406 | return result; | |
1407 | ||
1da177e4 | 1408 | result = sddr09_send_command(us, 0x01, USB_DIR_IN, data, 2); |
0dc08a35 | 1409 | if (result) { |
1da177e4 LT |
1410 | US_DEBUGP("sddr09_init: send_command fails\n"); |
1411 | return result; | |
1412 | } | |
1413 | ||
1414 | US_DEBUGP("SDDR09init: %02X %02X\n", data[0], data[1]); | |
1415 | // get 07 02 | |
1416 | ||
1417 | result = sddr09_send_command(us, 0x08, USB_DIR_IN, data, 2); | |
0dc08a35 | 1418 | if (result) { |
1da177e4 LT |
1419 | US_DEBUGP("sddr09_init: 2nd send_command fails\n"); |
1420 | return result; | |
1421 | } | |
1422 | ||
1423 | US_DEBUGP("SDDR09init: %02X %02X\n", data[0], data[1]); | |
1424 | // get 07 00 | |
1425 | ||
1426 | result = sddr09_request_sense(us, data, 18); | |
0dc08a35 | 1427 | if (result == 0 && data[2] != 0) { |
1da177e4 LT |
1428 | int j; |
1429 | for (j=0; j<18; j++) | |
1430 | printk(" %02X", data[j]); | |
1431 | printk("\n"); | |
1432 | // get 70 00 00 00 00 00 00 * 00 00 00 00 00 00 | |
1433 | // 70: current command | |
1434 | // sense key 0, sense code 0, extd sense code 0 | |
1435 | // additional transfer length * = sizeof(data) - 7 | |
1436 | // Or: 70 00 06 00 00 00 00 0b 00 00 00 00 28 00 00 00 00 00 | |
1437 | // sense key 06, sense code 28: unit attention, | |
1438 | // not ready to ready transition | |
1439 | } | |
1440 | ||
1441 | // test unit ready | |
1442 | ||
f5b8cb9c | 1443 | return 0; /* not result */ |
1da177e4 LT |
1444 | } |
1445 | ||
1446 | /* | |
1447 | * Transport for the Sandisk SDDR-09 | |
1448 | */ | |
1449 | int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us) | |
1450 | { | |
1451 | static unsigned char sensekey = 0, sensecode = 0; | |
1452 | static unsigned char havefakesense = 0; | |
1453 | int result, i; | |
1454 | unsigned char *ptr = us->iobuf; | |
1455 | unsigned long capacity; | |
1456 | unsigned int page, pages; | |
1457 | ||
1458 | struct sddr09_card_info *info; | |
1459 | ||
1460 | static unsigned char inquiry_response[8] = { | |
1461 | 0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00 | |
1462 | }; | |
1463 | ||
1464 | /* note: no block descriptor support */ | |
1465 | static unsigned char mode_page_01[19] = { | |
1466 | 0x00, 0x0F, 0x00, 0x0, 0x0, 0x0, 0x00, | |
1467 | 0x01, 0x0A, | |
1468 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
1469 | }; | |
1470 | ||
1471 | info = (struct sddr09_card_info *)us->extra; | |
1da177e4 LT |
1472 | |
1473 | if (srb->cmnd[0] == REQUEST_SENSE && havefakesense) { | |
1474 | /* for a faked command, we have to follow with a faked sense */ | |
1475 | memset(ptr, 0, 18); | |
1476 | ptr[0] = 0x70; | |
1477 | ptr[2] = sensekey; | |
1478 | ptr[7] = 11; | |
1479 | ptr[12] = sensecode; | |
1480 | usb_stor_set_xfer_buf(ptr, 18, srb); | |
1481 | sensekey = sensecode = havefakesense = 0; | |
1482 | return USB_STOR_TRANSPORT_GOOD; | |
1483 | } | |
1484 | ||
1485 | havefakesense = 1; | |
1486 | ||
1487 | /* Dummy up a response for INQUIRY since SDDR09 doesn't | |
1488 | respond to INQUIRY commands */ | |
1489 | ||
1490 | if (srb->cmnd[0] == INQUIRY) { | |
1491 | memcpy(ptr, inquiry_response, 8); | |
1492 | fill_inquiry_response(us, ptr, 36); | |
1493 | return USB_STOR_TRANSPORT_GOOD; | |
1494 | } | |
1495 | ||
1496 | if (srb->cmnd[0] == READ_CAPACITY) { | |
1497 | struct nand_flash_dev *cardinfo; | |
1498 | ||
1499 | sddr09_get_wp(us, info); /* read WP bit */ | |
1500 | ||
1501 | cardinfo = sddr09_get_cardinfo(us, info->flags); | |
1502 | if (!cardinfo) { | |
1503 | /* probably no media */ | |
1504 | init_error: | |
1505 | sensekey = 0x02; /* not ready */ | |
1506 | sensecode = 0x3a; /* medium not present */ | |
1507 | return USB_STOR_TRANSPORT_FAILED; | |
1508 | } | |
1509 | ||
1510 | info->capacity = (1 << cardinfo->chipshift); | |
1511 | info->pageshift = cardinfo->pageshift; | |
1512 | info->pagesize = (1 << info->pageshift); | |
1513 | info->blockshift = cardinfo->blockshift; | |
1514 | info->blocksize = (1 << info->blockshift); | |
1515 | info->blockmask = info->blocksize - 1; | |
1516 | ||
1517 | // map initialization, must follow get_cardinfo() | |
1518 | if (sddr09_read_map(us)) { | |
1519 | /* probably out of memory */ | |
1520 | goto init_error; | |
1521 | } | |
1522 | ||
1523 | // Report capacity | |
1524 | ||
1525 | capacity = (info->lbact << info->blockshift) - 1; | |
1526 | ||
1527 | ((__be32 *) ptr)[0] = cpu_to_be32(capacity); | |
1528 | ||
1529 | // Report page size | |
1530 | ||
1531 | ((__be32 *) ptr)[1] = cpu_to_be32(info->pagesize); | |
1532 | usb_stor_set_xfer_buf(ptr, 8, srb); | |
1533 | ||
1534 | return USB_STOR_TRANSPORT_GOOD; | |
1535 | } | |
1536 | ||
1537 | if (srb->cmnd[0] == MODE_SENSE_10) { | |
1538 | int modepage = (srb->cmnd[2] & 0x3F); | |
1539 | ||
1540 | /* They ask for the Read/Write error recovery page, | |
1541 | or for all pages. */ | |
1542 | /* %% We should check DBD %% */ | |
1543 | if (modepage == 0x01 || modepage == 0x3F) { | |
1544 | US_DEBUGP("SDDR09: Dummy up request for " | |
1545 | "mode page 0x%x\n", modepage); | |
1546 | ||
1547 | memcpy(ptr, mode_page_01, sizeof(mode_page_01)); | |
1548 | ((__be16*)ptr)[0] = cpu_to_be16(sizeof(mode_page_01) - 2); | |
1549 | ptr[3] = (info->flags & SDDR09_WP) ? 0x80 : 0; | |
1550 | usb_stor_set_xfer_buf(ptr, sizeof(mode_page_01), srb); | |
1551 | return USB_STOR_TRANSPORT_GOOD; | |
1552 | } | |
1553 | ||
1554 | sensekey = 0x05; /* illegal request */ | |
1555 | sensecode = 0x24; /* invalid field in CDB */ | |
1556 | return USB_STOR_TRANSPORT_FAILED; | |
1557 | } | |
1558 | ||
1559 | if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) | |
1560 | return USB_STOR_TRANSPORT_GOOD; | |
1561 | ||
1562 | havefakesense = 0; | |
1563 | ||
1564 | if (srb->cmnd[0] == READ_10) { | |
1565 | ||
1566 | page = short_pack(srb->cmnd[3], srb->cmnd[2]); | |
1567 | page <<= 16; | |
1568 | page |= short_pack(srb->cmnd[5], srb->cmnd[4]); | |
1569 | pages = short_pack(srb->cmnd[8], srb->cmnd[7]); | |
1570 | ||
1571 | US_DEBUGP("READ_10: read page %d pagect %d\n", | |
1572 | page, pages); | |
1573 | ||
0dc08a35 MD |
1574 | result = sddr09_read_data(us, page, pages); |
1575 | return (result == 0 ? USB_STOR_TRANSPORT_GOOD : | |
1576 | USB_STOR_TRANSPORT_ERROR); | |
1da177e4 LT |
1577 | } |
1578 | ||
1579 | if (srb->cmnd[0] == WRITE_10) { | |
1580 | ||
1581 | page = short_pack(srb->cmnd[3], srb->cmnd[2]); | |
1582 | page <<= 16; | |
1583 | page |= short_pack(srb->cmnd[5], srb->cmnd[4]); | |
1584 | pages = short_pack(srb->cmnd[8], srb->cmnd[7]); | |
1585 | ||
1586 | US_DEBUGP("WRITE_10: write page %d pagect %d\n", | |
1587 | page, pages); | |
1588 | ||
0dc08a35 MD |
1589 | result = sddr09_write_data(us, page, pages); |
1590 | return (result == 0 ? USB_STOR_TRANSPORT_GOOD : | |
1591 | USB_STOR_TRANSPORT_ERROR); | |
1da177e4 LT |
1592 | } |
1593 | ||
1594 | /* catch-all for all other commands, except | |
1595 | * pass TEST_UNIT_READY and REQUEST_SENSE through | |
1596 | */ | |
1597 | if (srb->cmnd[0] != TEST_UNIT_READY && | |
1598 | srb->cmnd[0] != REQUEST_SENSE) { | |
1599 | sensekey = 0x05; /* illegal request */ | |
1600 | sensecode = 0x20; /* invalid command */ | |
1601 | havefakesense = 1; | |
1602 | return USB_STOR_TRANSPORT_FAILED; | |
1603 | } | |
1604 | ||
1605 | for (; srb->cmd_len<12; srb->cmd_len++) | |
1606 | srb->cmnd[srb->cmd_len] = 0; | |
1607 | ||
1608 | srb->cmnd[1] = LUNBITS; | |
1609 | ||
1610 | ptr[0] = 0; | |
1611 | for (i=0; i<12; i++) | |
1612 | sprintf(ptr+strlen(ptr), "%02X ", srb->cmnd[i]); | |
1613 | ||
1614 | US_DEBUGP("SDDR09: Send control for command %s\n", ptr); | |
1615 | ||
1616 | result = sddr09_send_scsi_command(us, srb->cmnd, 12); | |
0dc08a35 | 1617 | if (result) { |
1da177e4 LT |
1618 | US_DEBUGP("sddr09_transport: sddr09_send_scsi_command " |
1619 | "returns %d\n", result); | |
0dc08a35 | 1620 | return USB_STOR_TRANSPORT_ERROR; |
1da177e4 LT |
1621 | } |
1622 | ||
1623 | if (srb->request_bufflen == 0) | |
1624 | return USB_STOR_TRANSPORT_GOOD; | |
1625 | ||
1626 | if (srb->sc_data_direction == DMA_TO_DEVICE || | |
1627 | srb->sc_data_direction == DMA_FROM_DEVICE) { | |
1628 | unsigned int pipe = (srb->sc_data_direction == DMA_TO_DEVICE) | |
1629 | ? us->send_bulk_pipe : us->recv_bulk_pipe; | |
1630 | ||
1631 | US_DEBUGP("SDDR09: %s %d bytes\n", | |
1632 | (srb->sc_data_direction == DMA_TO_DEVICE) ? | |
1633 | "sending" : "receiving", | |
1634 | srb->request_bufflen); | |
1635 | ||
1636 | result = usb_stor_bulk_transfer_sg(us, pipe, | |
1637 | srb->request_buffer, | |
1638 | srb->request_bufflen, | |
1639 | srb->use_sg, &srb->resid); | |
1640 | ||
1641 | return (result == USB_STOR_XFER_GOOD ? | |
1642 | USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR); | |
1643 | } | |
1644 | ||
1645 | return USB_STOR_TRANSPORT_GOOD; | |
1646 | } | |
1647 | ||
f5b8cb9c MD |
1648 | /* |
1649 | * Initialization routine for the sddr09 subdriver | |
1650 | */ | |
1651 | int | |
1652 | usb_stor_sddr09_init(struct us_data *us) { | |
1653 | return sddr09_common_init(us); | |
1654 | } |